CA2222901C - Method of controlling a turret winder - Google Patents

Method of controlling a turret winder Download PDF

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Publication number
CA2222901C
CA2222901C CA002222901A CA2222901A CA2222901C CA 2222901 C CA2222901 C CA 2222901C CA 002222901 A CA002222901 A CA 002222901A CA 2222901 A CA2222901 A CA 2222901A CA 2222901 C CA2222901 C CA 2222901C
Authority
CA
Canada
Prior art keywords
mandrel
turret assembly
core
bedroll
rotating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CA002222901A
Other languages
French (fr)
Other versions
CA2222901A1 (en
Inventor
Thomas Timothy Byrne
Frederick Edward Lockwood
Kevin Benson Mcneil
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Procter and Gamble Co
Original Assignee
Procter and Gamble Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Procter and Gamble Co filed Critical Procter and Gamble Co
Publication of CA2222901A1 publication Critical patent/CA2222901A1/en
Application granted granted Critical
Publication of CA2222901C publication Critical patent/CA2222901C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00Winding webs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00Changing the web roll
    • B65H19/22Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/2207Changing the web roll in winding mechanisms or in connection with winding operations the web roll being driven by a winding mechanism of the centre or core drive type
    • B65H19/2223Turret-type with more than two roll supports
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00Changing the web roll
    • B65H19/22Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/30Lifting, transporting, or removing the web roll; Inserting core
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/40Type of handling process
    • B65H2301/41Winding, unwinding
    • B65H2301/413Supporting web roll
    • B65H2301/4135Movable supporting means
    • B65H2301/41356Movable supporting means moving on path enclosing a non-circular area
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/40Type of handling process
    • B65H2301/41Winding, unwinding
    • B65H2301/413Supporting web roll
    • B65H2301/4136Mounting arrangements not otherwise provided for
    • B65H2301/41362Mounting arrangements not otherwise provided for one of the supports for the roller axis being movable as auxiliary bearing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/40Type of handling process
    • B65H2301/41Winding, unwinding
    • B65H2301/414Winding
    • B65H2301/4148Winding slitting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/40Type of handling process
    • B65H2301/41Winding, unwinding
    • B65H2301/417Handling or changing web rolls
    • B65H2301/418Changing web roll
    • B65H2301/4181Core or mandrel supply
    • B65H2301/41812Core or mandrel supply by conveyor belt or chain running in closed loop
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/40Type of handling process
    • B65H2301/41Winding, unwinding
    • B65H2301/417Handling or changing web rolls
    • B65H2301/418Changing web roll
    • B65H2301/4181Core or mandrel supply
    • B65H2301/41814Core or mandrel supply by container storing cores and feeding through wedge-shaped slot or elongated channel
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/40Type of handling process
    • B65H2301/41Winding, unwinding
    • B65H2301/417Handling or changing web rolls
    • B65H2301/418Changing web roll
    • B65H2301/4182Core or mandrel insertion, e.g. means for loading core or mandrel in winding position
    • B65H2301/41828Core or mandrel insertion, e.g. means for loading core or mandrel in winding position in axial direction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2408/00Specific machines
    • B65H2408/20Specific machines for handling web(s)
    • B65H2408/23Winding machines
    • B65H2408/231Turret winders
    • B65H2408/2312Turret winders with bedroll, i.e. very big roll used as winding roller
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20Location in space
    • B65H2511/21Angle
    • B65H2511/212Rotary position
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2551/00Means for control to be used by operator; User interfaces
    • B65H2551/10Command input means
    • B65H2551/15Push buttons; Keyboards
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2551/00Means for control to be used by operator; User interfaces
    • B65H2551/20Display means; Information output means
    • B65H2551/21Monitors; Displays

Abstract

A web winding apparatus (90) and a method of operating the apparatus are disclosed. The apparatus can include a turret assembly (200), a core loading apparatus (1000), and a core stripping apparatus (2000). The turret assembly (200) supports rotatably driven mandrels (300) for engaging hollow cores (30 2) upon which a paper web (50) is wound. Each mandrel (300) is driven in a clos ed mandrel path (320), which can be non-circular. The core loading apparatus (1000) conveys cores (302) onto the mandrels (300) during movement of the mandrels (300) along the core loading segment (322) of the closed mandrel pa th (320), and the core stripping apparatus (2000) removes each web wound core (302, 51) from its respective mandrel (300) during movement of the mandrel (200) along the core stripping segment (326) of the closed mandrel path (320 ). The turret assembly (200) can be rotated continuously, and the sheet count p er wound log (51) can be changed as the turret assembly (200) is rotating. The apparatus (90) can also include a mandrel (300) having a deformable core engaging member (3100). The web (50) is transferred from a driven bedroll (5 9) to the turret assembly (200). The turret assembly (200) is individually driv en and mechanically decoupled from the bedroll (59). The core loading apparatus (1000)and the core stripping apparatus (2000) are both indiviudally driven and are mechanically decoupled from the rotation of the bedroll (59) and of the turret assembly (200). A common position reference is provided which can be a function of the angular position of the bedroll (59) or a function of i ts accumulated number of revolutions. The position of the turret assembly (200) , the core loading apparatus (100) and of the core stripping apparatus (2000) is controlled in relation to the common position reference.

Description

s io METHOD OF CONTROLLING A TURRET WINDER
FF>ELD OF THE INVENTION
is This invention is related to a method for winding web material such as tissue paper or paper toweling into individual logs. More particularly, the invention is related to a method for controlling winding of a web on a turret winder.
BACKGROUND OF THE INVENTION
2o Turret winders are well known in the art. Conventional turret winders comprise a rotating turret assembly which supports a plurality of mandrels for rotation about a turret axis. The mandrels travel in a circular path at a fixed distance from the turret axis. The mandrels engage hollow cores upon which a paper web can be wound. Typically, the paper web is unwound from a parent roll 2s in a continuous fashion, and the turret winder rewinds the paper web onto the cores supported on the mandrels to provide individual, relatively small diameter logs.
While conventional turret winders may provide for winding of the web material on mandrels as the mandrels are carried about the axis of a turret so assembly, rotation of the tmTet assembly is indexed in a stop and start manner to provide for core loading and log unloading while the mandrels are stationary.
Turret winders are disclosed in the following U.S. Patents: 2,769,600 issued November 6, 1956 to Kwitek et al; U.S. Patent 3,179,348 issued September 17, 1962 to Nystrand et al.; U.S. Patent 3,552,670 issued June 12, 1968 to Herman;
ss and U.S. Patent 4,687,153 issued August 18, 1987 to McNeil. Indexing turret assemblies are commercially available vn Series 150, 200, and 250 rewinders manufactured by the Paper Converting Machine Company of Green Bay, Wisconsin.
The Paper Converting Machine Company Pushbutton Grade Change 250 4o Series Rewinder Training Manual discloses a web winding system having five servo controlled axes. The axes are odd metered winding, even metered winding, I
s coreload conveyor, roll snip conveyor, and turret ir>dexing. Pry changes.
such as sheer count per log, are said to be made by the operator v~ a terminal interface. The system is said to elimiaue the m~~~ ~ age gears or pulley and conveyor speoclo~s.
Various constnxxions for cone holders, i~
to mechanisms for securi~ a ~ to a maodrei, a~ ~ y~ ~ U.S. Past 4.633,8'!1 issued Jan. 13, 1987 to Jobm~aoo et al. diacloaea a having p~ ~ U.S. Pad 4,033,321 issued July S, 1977 to ~ a robber or ether ubic6 am be bY ~~ed air so that projections pip a core oo p~ a web is wonad. pd~
is ~! and cove holder oost~~ are shown is U:S. Pad 3,439,388;
4.230, 286; and 4,174,077.
of the turret as~bly is mde:inble beanae of t6s fonroa and veased by aoo~ a r°ts~Of tn::et 1Y. !u addioioa, it is debars b ~ ~ ~c6 as .. eapedaUy arbaee eear~ a iv die ooov~
Accordingly, it is an object of an aspect of the present invention to provide an improved method for controlling winding of a web material onto individual hollow cores.
Another object of an aspect of the present invention is to provide a Z3 method of continuously rotating a turret assembly, and of phasing the rotational position of a turret winder with that of a position reference.
Another object of an aspect of the present invention is to reduce the position errors of a plurality of individually driven components, including a turret assembly, a core loading component, and a core stripping component, 3p while driving the components.
SAY OF T188 liWBNTIObI .
T~ mvmdou oompriaae a of ooattol~ of a ooatdrtoos rob of m~o~al iaoo i~,;~ ~" ~ 1s ooe 3s oom~pe~s the steps o~ pe~ovidiag a rotmbiy d~ tua~et asmmbl~ a r ~ ~o~utabrr dsivea mr~r e~s ~ a y ~° b°'~'~ ~ P~~t ~ of tae oootim,ous web or malaria! to the ronnbly driven ouret assembly; ronhog the bedroll; ro~g the ably driven ~ asmmbly, w6eeein song of the turret sssdnbly is.mechaaxally deooupted ,o from rotate of tba bedroll; d;ag the ac~1 position of the turret Y: deeemsioias a deeited posinoo of the rotatably driven tneret aaaembly;
l a ~ aaaembly poaitioo error as a fimcdoo of the setae! sad desired positions of the turret assembly; and reducing the position error of the turret assembly while rotating the rotatably driven turret assembly.
' The steps of determining the desired and actual positions of the rotatably driven turret assembly can comprise the steps of: providing a position reference ' while rotating the turret assembly; determining the desired position of the 1o rotatably driven turret assembly relative to the position reference while rotating the turret assembly; and determining the actual position of the turret assembly relative to the position reference while rotating the turret assembly.
The position reference can be calculated as a function of the angular position of the bedroll. In one embodiment, the position reference is calculated as a function of the angular position of the bedroll, and as a function of an accumulated number of revolutions of the bedroll. For instance, the position reference can be calculated as the position of the bedroll within a log wind cycle.
The step of rotating the rotatably driven turret assembly can comprise the step of continuously rotating the turret assembly after the step of reducing the 2o position error of the turret assembly is completed. For instance, the step of rotating the turret assembly can comprise the step of rotating the turret assembly at a generally constant angular velocity after the step of reducing the position error of the turret assembly is completed.
In one embodiment, the method of the present invention comprises the steps 2s of: providing at least two independently driven components, the position of each independently driven component being mechanically decoupled from the positions of the other independently driven components, wherein at least one of the independently driven components comprises a rotatably driven turret assembly supporting a plurality of rotatably driven mandrels for winding the logs;
driving 3o each of the independently driven components; providing a common position reference; determining the actual position of each independently driven component relative to the common position reference while driving the independently driven component; determining the desired position of each independently driven component relative to the common position reference while driving the 35 independently driven component; determining a position error for each f independently driven component as a function of the actual and desired positions of the independently driven component; and reducing the position error of each independently driven component while driving the component. The step of providing at least two independently driven components can comprise the steps of 4o providing an independently driven component for loading a core onto each of the s maadrels and providing an indep~eady driven component for removing w~
togs from chc mandrels. .
In accordance with one embodiment of the invention it provides a method of winding a continuous web of material into individual logs, the method comprising the steps of providing a mtatably driven turret assembly supporting a plurality of rotatably driven mandrels for winding the logs, providing a rotatably driven bedroll for providing transfer of the continuous web of material to the rotatably driven turret assembly;
rotating the bedroll;
is rotating the rotatably driven turret assembly, wherein rotation of the turret assembly is mechanically decoupled from rotation of the bedroll;
determining the actual position of the turret assembly;
determining a desired position of the rotatably driven turret assembly;
determining a turret assembly position error as a function of the actual and m desired positions of the turret assembly; and reducing the position error of the turret assembly while rotating the rotatably driven turret assembly.
' In accordance with another embodiment of the invention it provides a method of winding a continuous web of material into individual logs, the ?s method comprising the steps of providing at least two independently driven components, the position of each independently driven component being mechanically decoupled from the positions of the other independently driven components, wherein at least one of the independently driven components comprises a rotatably driven 3o turret assembly supporting a plurality of rotatably driven mandrels for winding the logs:
driving each of the independently driven components:
providing a common position reference;
determining the actual position of each independently driven component relative 33 to the common position reference while driving the independently driven component;

4a determining the desired position of each independently driven component relative to the common position reference while driving the independently driven component;
determining a position error for each independently driven component as a function of the actual and desired positions of the independently driven to component; and reducing the position error of each independently driven component while driving the component.
In accordance with another embodiment of the invention it provides a 1s method of winding a continuous web of material onto hollow cores to form individual logs of the material, the method comprising the steps of providing a rotatably driven turret assembly supporting a plurality of rotatably driven mandrels for winding the web of material onto cores supported on the mandrels;
Zo providing a rotatably driven bedroll for transferring the web of material to the rotatably driven turret assembly;
providing a driven core loading component for loading a core onto a mandrel;
providing a driven log removing component for removing a wound log from a mandrel;
rotating the bedroll;
rotating the turret assembly to carry the mandrels in a closed path, wherein rotation of the turret assembly is mechanically decoupled from rotation of the bedroll;
driving the core loading component to load a core onto a mandrel while the 3p mandrel is moving, wherein motion of the core loading component is mechanically decoupled from rotation of the bedroll and the turret assembly;
transferring the web to the core;
rotating the mandrel to wind the web on the core to form a log supported on the 33 mandrel;

4b driving the log removing component to remove the log from the mandrel while the mandrel is moving, wherein motion of the log removing component is mechanically decoupled from rotation of the bedroll and rotation of the turret assembly;
providing a common position reference;
to determining the desired position of each of the turret assembly, core loading component, and log removing component relative to the common position reference while rotating the turret assembly;
determining the actual position of each of the turret assembly, core loading component, and log removing component relative to the common position reference;
determining a position error for each of the turret assembly, core loading component, and log removing component as a function of their respective actual and desired positions; and reducing the position error associated with each of the turret assembly, core loading component, and log removing component while rotating the turret assembly.
BR~F DBSCR>P'IION OF T~ DRp~V~ICiS
While the specifiation concludes with claims petticularlY po~a= out and Y o~ the iav~tioo, it is believed the pnse~ ion w~l be betoer understood fiotn the following dis cony with the a~mpauYio~ dawiaas in ~hic6;
F'r~une 1 is a perspective view of the turret winder, nose wide apparatus, sad core loadins appamtns of me ioveatian.
F'>~e Z is a p~lly cut away foot view of the turret wiode~ of the p ior~ioo.
ye 3A is a aids view s6owin~ the pof the closed mande~ p,~ _ sad mao~l drive aya~ al the tmtat wiode~ of the pot iavmhon ~la~ive b an up~a~m coew~onal rewiader assembly.
3s Fisuea 3B is a pettisl (toot view of the ~ d~ ~ in ~itute 3A taioen eloos lines 38-38 is ~uie 3A.
4 ~ m a~t~ed finer view of the rot~b>~ drives tm:ec avembl)r shoers is Fi~mo Z.

4c due s b x~6em~c view Vlm. aloof Iioee 3-s in lime 4.
~~me 6 b a as6am~k al a m~a~! be~,~ siidably sv~p~ted °° rc~tatio~ mod s~poe~ Py~.
F~nie 7 is a eectioaai view alma abo~ Hoes 7 7 in F'~me 6 and s6owir~ a m~aded ee~ve to a eon m~ Pte.
to 8 b a view aD tbtt of Fume 7 shoarb~ the mandml s~v~e to the r~ maodrd Pte.
~ Pl~a 9 is a~ ml~ed view o! the mrm~l ~ in Z.
Fipue 10 is s side viaw t~oe~ abo~ iiaee 10-10 in Free 9 and s6ov,;a~ a is a~pio~ aim aocaeoded ieb~ve en a ~
~ 11 b a vbw to that at ~ 10 s6o~
reed arc b the r~ ~ Pte.
a b a vbw taioeo aboF lines 1212 in Fi~ue 10, with the open, P~ the ano shown in phaao~om.
m F'~me 13 is a pe~pec~ve view shod po~tiooinF at arms ~°~°'d ~ ~~ ~ cbs~. op~i. bold open, aad bold closed am .

5 Figure 14 is a view of a stationary mandrel positioning guide comprising separable plate segments.
Figure 15 is a side view showing the position of core drive rollers and a mandrel support relative to the closed mandrel path.
Figure 16 is a view taken along lines 16-16 in Figure 15.
to Figure 17 is a front view of a cupping assist mandrel support assembly.
Figure 18 is a view taken along lines 18-18 in Figure 17.
Figure 19 is a view taken along lines 19-19 in Figure 17.
Figure 20A is an enlarged perspective view of the adhesive application assembly shown in Figure 1.
is Figure 20B is a side view of a core spinning assembly shown in Figure 20A.
Figure 21 is a rear perspective view of the core loading apparatus in Figure 1.
Figure 22 is a schematic side view shown partially in cross-section of the core loading apparatus shown in Figure 1 2o Figure 23 is a schematic side view shown partially in cross-section of the core guide assembly shown in Figure 1.
Figure 24 is a front perspective view of the core stripping apparatus in Figure 1.
Figures 25A, B, and C are top views showing a web wound core being 25 stripped from a mandrel by the core stripping apparatus.
Figure 26 is a schematic side view of a mandrel shown partially in cross-section.
Figure 27 is a partial schematic side view of the mandrel shown partially in cross-section, a cupping arm assembly shown engaging the mandrel 3o nosepiece to displace the nosepiece toward the mandrel body, thereby compressing the mandrel deformable ring.
Figure 28 is an enlarged schematic side view of the second end of the mandrel of Figure 26 showing a cupping arm assembly engaging the mandrel nosepiece to displace the nosepiece toward the mandrel body.
35 Figure 29 is an enlarged schematic side view of the second end of the mandrel of Figure 26 showing the nosepiece biased away from the mandrel body.
Figure 30 is a cross-sectional view of a mandrel deformable ring.
Figure 31 is a schematic diagram showing a programmable drive control system for controlling the independently drive components of the web winding apparatus.

s Figure 32 is a xhematic diagram showing a p~g~~~ ~~l drive control system for controlling mandrel drive motors, DETA1LED DESCRIPTION OF 'TFty3 ~TV~ON
Figure 1 is a perspective view showing the front of a web winding apparuus in 90 according to the presart inva>mon. The web winding appacadts 90 coarprises a curnt winder 100 daviag a frame 110, a core loading appa~,s 1000, ~ a ~ soripping ap~rad~s 2000. Figure 2 is a pastial frost view of the turret winder 100. Figure 3A is a partial side view of the turret winder 100 taken along lines 3-3 in Fignte 2, showing a oooventiotul web ably of is the turret winder 100.
Description of Core Loading, Winding, and Stripping _ ~ F'igwe 1, 2 and 3AB, the tenet wiode: 100 supports a Pof mandrels 300. The mandrels 300 aop~ge noses 302 upon which a m p~ web is wamd. 'ibe mand»1a 300 are driven in a cloned msod»ei path 320 a ~ ably coal axis 202. Bac6 maodtd 300 ~g a msodal axis 314 gar~anY paral»1 to the turner assembly oeaoru axis 202, from a fiat mandrel end 310 to a second maad>ne1 aid 312. 'The mandrels app are at their firaE ends 310 by a rot~bly driven tnrnet assembly 200. The is . mandeds 300 are relaaably st,ppa~e,d at their xoond ends 312 by a mandrel c~n~ assembly 400. The turret winder 100 Y sup~p~ ,t yap t>1mm ~, moss pns~abiy at last 6 mandrels 300, and in one embodameat the turret winder 100 tea mandrels 300. A fuser winder 100 suppoitaag at least 10 mandrels 300 can have a ronnbly delves tnriet assembly 200 which is 3o totmed at a re~ivdy low angular veracity to teduoe vr~oo sad inertia loads, w~ pimcmased throughput relative to a iadadng turret winder which is idanmtimeotty rotmed at higher anguyr velocities.
As shows in Figure 3A, the closed maod:d pd6 320 on be non-circular, sad cm iacluds a oors loading segm~t 322, a ,v~ wig gu~ and a 3s coes attipplng segment 326. The core loading seat 3~2 and the sore s<:ippiog segm~t 326 can ac6 eon a generally straight line gy ~ Pie 'a 8~11Y ~~ 1~ portion' it is mans that a shat of the closed maadret path 320 includes two poims on the closed mandrel path, wbetdn the straight line disdaoe betwoea the two poitus is at last l0 inches, sad wbmeia the maximuw normal deviation of the closed mandrel path eacending between the two points ~ a line drawn hawser cbe two poiatt is no more than about 10 s percent, and in one embodiment is no more than about 5 percent. The maximum norrilal deviation of the portion of the closed mandrel path extending between the two points is calculated by: constructing an imaginary line between the two points;
determining the maximum distance from the imaginary straight line to the portion of the closed mandrel path between the two points, as measured perpendicular to to the imaginary straight line; and dividing the maximum distance by the straight line distance between the two points (10 inches).
In one embodiment of the present invention, the core loading segment 322 and the core stripping segment 326 can each comprise a straight line portion having a maximum normal deviation of less than about 5.0 percent. By way of is example, the core loading segment 322 can comprise a straight line portion having a maximum deviation of about 0.15-0.25 percent, and the core stripping segment can comprise a straight line portion having a maximum deviation of about O.s-s.0 percent. Straight line portions with such maximum deviations permit cores to be accurately and easily aligned with moving mandrels during core loading, and 20 permit stripping of empty cores from moving mandrels in the event that web material is not wound onto one of the cores. In contrast, for a conventional indexing turret having a circular closed mandrel path with a radius of about inches, the normal deviation of the circular closed mandrel path from a 10 inch long straight chord of the circular mandrel path is about 13.4 percent, 2s The second ends 312 of the mandrels 300 are not engaged by, or otherwise supported by, the mandrel cupping assembly 400 along the core loading segment 322. The core loading apparatus 1000 comprises one or more driven core loading components for conveying the cores 302 at least part way onto the mandrels 300 during movement of the mandrels 300 along the core loading segment 322. A pair so of rotatably driven core drive rollers SOS disposed on opposite sides of the core loading segment 322 cooperate to receive a core from the core loading apparatus 1000 and complete driving of the core 302 onto the mandrel 300. As shown in Figure 1, loading of one core 302 onto a mandrel 300 is initiated at the second mandrel end 312 before loading of another core on the preceding adjacent mandrel ss is completed._ Accordingly, the delay and inertia forces associated with start and stop indexing of conventional turret assemblies is eliminated.
Once core loading is complete on a particular mandrel 300, the mandrel cupping assembly 400 engages the second end 312 of the mandrel 300 as the mandrel moves from the core loading segment 322 to the web winding segment 40 324, thereby providing support to the second end 312 of the mandrel 300.
Cores 302 loaded onto mandrels 300 are carried to the web winding segment 324 of the s closed mandrtl path 320. Intermediate the core loading xgment 322 and the web winding segment 324, a web securing adhesive can be applied to the core 302 by an adhesive application apparatus 800 as the core and its associated mandrel are carried along tlm closed mandrel path.
As tlu core 302 is carried along the web wirtdiag set 324 of the cloxd o mandrel path 320, a web 50 is directed to the cove 302 by a aoavemionsl rewiader assembly 60 disposed ~ ~ p~ w~ 100. The rewindar assembly 60 is shown in Figure 3, and includes feed rvvs 52 for carrying t6a web 50 to a perforator roll 54, a web sliaec bed roll 56, sad a cbopper roll 58 and bedroll 59.
The Petfotuor roll 54 prov~a liars of perforahooa ending ~g the is width of the web 30. lines of ~ ~ ~ a Pt'°d~'°~°°d doe along tha kn~6 of the web 50 to provide ia~r~
J~d to~6er at the perfocationa. The s6e~ ~ of the is the dice between adjsomt liam of per, T~ hopper roll 58 and bedm>i 59 savers the crab 50 ~ ~ ~ ~ a~ yog wind cycle, w6ea web wig ~ ,~ ~ 302 is oompk~oe, T6e bedrou 59 also Ptransfer of the free end of the web 30 to the next ooie 302 advancing ~a cloned mandrel path 3Z0 Such a rwmdar a6p, g the feed rolin 52, perfoialoc roll 34, wab a,>hpm bed roil 36. sad chopper roll and badeoli 38 and 59, is yell lmoaro in the alt The bedroll 59 cm have ~t k °°~'m1~ g » and pins, ~ ~y mbooties, as is haown in the alt The x ~~y ~ ~ choppy roll can have a Puart 4,687,153 is:ned ~°°' as is knovrn in tba art. U.S.
Angost 18, 1987 to McNeg - ~ ~ ~°'°~Y ~ opeeation aI the bedeoll and ~ ~ ~ a=te. A ~der,n,~bly 6o mch,dlng rolls 32, 34~ 56, 38 a~ S9 au be mppoeted oa a frame 61 and is min ~ ~° ~ t Coa~paay of Cire~ Hay WisooosiD as a Series . 13Q rawiodar sysamf.
Tha ball as ioc>nds a cbopolf sod for a~ivsdOg the radial 3s moveable . The solenoid activates the radial mo~ros~ m sever the web at t6a end of s bg wind cycle, so thg the web an be ~aasferted for winding on a yaw, amply cola. The sol~oid ~g an be varied to ~°8Q ~ l~gt6 iamrval at arhich the web is sawesed by the bedroll and chopper roll. A~ooo~y~ ~ a ~ ~ ~ ~ per log is desired, the sod ion timing an be varied to change the kagt6 of the material wound on a log.

WO 96!38363 PCT/US96/07461 A mandrel drive apparatus 330 provides rotation of each mandrel 300 and its associated core 302 about the mandrel axis 314 during movement of the mandrel and core along the web winding segment 324. The mandrel drive apparatus 330 thereby provides winding of the web 50 upon the core 302 supported on the mandrel 300 to form a log 51 of web material wound around the 1o core 302 (a web wound core). The mandrel drive apparatus 330 provides center winding of the paper web 50 upon the cores 302 (that is, by connecting the mandrel with a drive which rotates the mandrel 300 about its axis 314, so that the web is pulled onto the core), as opposed to surface winding wherein a portion of the outer surface on the log 51 is contacted by a rotating winding drum such that ~5 the web is pushed, by friction, onto the mandrel.
The center winding mandrel drive apparatus 330 can comprise a pair of mandrel drive motors 332A and 3328, a pair of mandrel drive belts 334A and 3348, and idler pulleys 336A and 3368. Referring to Figures 3A/B and 4, the first and second mandrel drive motors 332A and 3328 drive first and second 2o mandrel drive belts 334A and 3348, respectively around idler pulleys 336A
and 3368. The first and second drive belts 334A and 3348 transfer torque to alternate mandrels 300. In Figure 3A, motor 332A, belt 334A, and pulleys 336A are in front of motor 3328, belt 3348, and pulleys 3368, respectively.
In Figures 3A/B, a mandrel 300A (an "even" mandrel) supporting a core 25 302 just prior to receiving the web from the bed roll 59 is driven by mandrel drive belt 334A, and an adjacent mandrel 3008 (an "odd" mandrel) supporting a core 302B upon which winding is nearly complete is driven by mandrel drive belt 3348. A mandrel 300 is driven about its axis 314 relatively rapidly just prior to and during initial transfer of the web 50 to the mandrel's associated core.
The 3o rate of rotation of the mandrel provided by the mandrel drive apparatus 330 slows as the diameter of the web wound on the mandrel's core increases. Accordingly, adjacent mandrels 300A and 3308 are driven by alternate drive belts 334A and 3348 so that the rate of rotation of one mandrel can be controlled independently of the rate of rotation of an adjacent mandrel. The mandrel drive motors 332A and 35 3328 can be controlled according to a mandrel winding speed schedule, which provides the desired rotational speed of a mandrel 300 as a function of the angular position of turret assembly 200. Accordingly, the speed of rotation of the mandrels about their axes during winding of a log is synchronized with the angular position of the mandrels 300 on the turret assembly 200. It is known to control 4o the rotational speed of mandrels with a mandrel speed schedule in conventional rewinders.

5 Each mandrel 300 has a toothed mandrel drive pulley 338 and a smooth surfaced, free wheeling idler pulley 339, both disposed near the first end 310 of the mandrel, as shown in Figure 2. The positions of the drive pulley 338 and idler pulley 339 alternate on every other mandrel 300, so that alternate mandrels 300 are driven by mandrel drive belts 334A and 334B, respectively. For instance, 1o when mandrel drive belt 334A engages the mandrel drive pulley 338 on mandrel 300A, the mandrel drive belt 334B rides over the smooth surface of the idler pulley 339 on that same mandrel 300A, so that only drive motor 332A provides rotation of that mandrel 300A about its axis 314. Similarly, when the mandrel drive belt 334B engages the mandrel drive pulley 338 on an adjacent mandrel 300B, the mandrel drive belt 334A rides over the smooth surface of the idler pulley 339 on that mandrel 300B, so that only drive motor 332B provides rotation of the mandrel 300B about its axis 314. Accordingly, each drive pulley on a mandrel 300 engages one of the belts 334A/334B to transfer torque to the mandrel 300, and the idler pulley 339 engages the other of the belts 334A/334B, but does 2o not transfer torque from the drive belt to the mandrel.
The web wound cores are carried along the closed mandrel path 320 to the core stripping segment 326 of the closed mandrel path 320. Intermediate the web winding segment 324 and the core stripping segment 326, a portion of the mandrel cupping assembly 400 disengages from the second end 312 of the mandrel 300 to permit stripping of the log 51 from the mandrel 300. The core stripping apparatus 2000 is positioned along the core stripping segment 326. The core stripping apparatus 2000 comprises a driven core stripping component, such as an endless conveyor belt 2010 which is continuously driven around pulleys 2012. The conveyor belt 2010 carries a plurality of flights 2014 spaced apart on the conveyor 3o belt 2010. Each flight 2014 engages the end of a log S 1 supported on a mandrel 300 as the mandrel moves along the core stripping segment 326.
The flighted conveyor belt 2010 can be angled with respect to mandrel axes 314 as the mandrels are carried along a generally straight line portion of the core stripping segment 326 of the closed mandrel path, such that the flights 2014 engage each log 51 with a first velocity component generally parallel to the mandrel axis 314, and a second velocity component generally parallel to the straight line portion of the core stripping segment 326. The core stripping apparatus 2000 is described in more detail below. Once the log 51 is stripped from the mandrel 300, the mandrel 300 is carried along the closed mandrel path to 4o the core loading segment 322 to receive another core 302.

ii Having described core loading, winding and stripping generally, the individual elements of the web winding apparatus 90 and their functions will now ' be described in detail.
Turret Winder: Mandrel Support 1o Referring to Figures 1-4, the rotatably driven turret assembly 200 is supported on the stationary frame 110 for rotation about the turret assembly central axis 202. The frame 110 is preferably separate from the rewinder assembly frame 61 to isolate the turret assembly 200 from vibrations caused by the rewinder assembly 60. The rotatably driven turret assembly 200 supports each is mandrel 300 adjacent the first end 310 of the mandrel 300. Each mandrel 300 is supported on the rotatably driven turret assembly 200 for independent rotation of the mandrel 300 about its mandrel axis 314, and each mandrel is carried on the rotatably driven turret assembly along the closed mandrel path 320.
Preferably, at least a portion of the mandrel path 320 is non-circular, and the distance between 2o the mandrel axis 314 and the turret assembly central axis 202 varies as a function of position of the mandrel 300 along the closed mandrel path 320.
Referring to Figure 2, and 4, the turret winder stationary frame 110 comprises a horizontally extending stationary support 120 extending intermediate upstanding frame ends 132 and 134. The rotatably driven turret assembly 200 25 comprises a turret hub 220 which is rotatably supported on the support 120 adjacent the upstanding frame end 132 by bearings 221. Portions of the assembly are shown cut away in Figures 2 and 4 for clarity. A turret hub drive servo motor 222 mounted on the frame 110 delivers torque to the turret hub 220 through a belt or chain 224 and a sheeve or sprocket 226 to rotatably drive the turret hub 3o about the turret assembly central axis 202. The servo motor 222 is controlled to phase the rotational position of the turret assembly 200 with respect to a position reference. The position reference can be a function of the angular position of the bedroll 59 about its axis of rotation, and a function of an accumulated number of revolutions of the bedroll 59. In particular, the position of the turret assembly 200 ss can be phased with respect to the position of the bedroll 59 within a log wind a cycle, as described more fully below.
In one embodiment, the turret hub 220 can be driven continuously, in a non-stop, non-indexing fashion, so that the turret assembly 200 rotates continuously.
By "rotates continuously" it is meant that the turret assembly 200 makes multiple, 4o full revolutions about its axis 202 without stopping. The turret hub 220 can be driven at a generally constant angular velocity, so that the turret assembly WO 96/38363 PCTlUS96/07461 rotates at a generally constant angular velocity. By "driven at a generally constant angular velocity" it is meant that the turret assembly 200 is driven to rotate continuously, and that the rotational speed of the turret assembly 200 varies less than about 5 percent, and preferably less than about 1 percent, from a baseline value. The turret assembly 200 can support 10 mandrels 300, and the turret hub l0 220 can be driven at a baseline angular velocity of between about 2-4 RPM, for winding between about 20-40 logs 51 per minute. For instance, the turret hub can be driven at a baseline angular velocity of about 4 RPM for winding about logs per minute, with the angular velocity of the turret assembly varying less than about 0.04 RPM.
is Referring to Figures 2, 4, 5, 6, 7, and 8, a rotating mandrel support extends from the turret hub 220. In the embodiment shown, the rotating mandrel support comprises first and second rotating mandrel support plates 230 rigidly joined to the hub for rotation with the hub about the axis 202. The rotating mandrel support plates 230 are spaced one from the other along the axis 202. Each rotating 2o mandrel support plate 230 can have a plurality of elongated slots 232 (Figure 5) extending there through. Each slot 232 extends along a path having a radial and a tangential component relative to the axis 202. A plurality of cross members (Figures 4 and 6-8) extend intermediate and are rigidly joined to the rotating mandrel support plates 230. Each cross member 234 is associated with and 25 extends along an elongated slot on the first and second rotating mandrel support plates 230.
The first and second rotating mandrel support plates 230 are disposed intermediate first and second stationary mandrel guide plates 142 and 144. The first and second mandrel guide plates 142 and 144 are joined to a portion of the 3o frame 110, such as the frame end 132 or the support 120, or alternatively, can be supported independently of the frame 110. In the embodiment shown, mandrel guide plate 142 can be supported by frame end 132 and the second mandrel guide plate 144 can be supported on the support 120.
The first mandrel guide plate 142 comprises a first cam surface, such as a s5 cam surface groove 143, and the second mandrel guide plate 144 comprises a second cam surface, such as a cam surface groove 145. The first and second cam surface grooves 143 and 145 are disposed on oppositely facing surfaces of the first and second mandrel guide plates 142 and 144, and are spaced apart from one another along the axis 202. Each of the grooves 143 and 145 define a closed path 4o around the turret assembly central axis 202. The cam surface grooves 143 and 145 can, but need not be, mirror images of one another. In the embodiment s shown, the cam surfaces are grooves 143 and 145, but it will be understood that other cam surfaces, such as external cam surfaces, could be used.
' The mandrel guide plates 142 and 144 act as a mandrel guide for positioning the mandrels 300 along the closed mandrel path 320 as the mandrels are carried on the rotating mandrel support plates 230. Each mandrel 300 is supported for to rotation about its mandrel axis 314 on a mandrel bearing support assembly 350.
The mandrel bearing support assembly 350 can comprise a first bearing housing 352 and a second bearing housing 354 rigidly joined to a mandrel slide plate 356.
Each mandrel slide plate 356 is slidably supported on a cross member 234 for translation relative to the cross member 234 along a path having a radial IS component relative to the axis 202 and a tangential component relative to the axis 202. Figures 7 and 8 show translation of the mandrel slide plate 356 relative to the cross member 234 to vary the distance from the mandrel axis 314 to the turret assembly central axis 202. In one embodiment, the mandrel slide plate can be slidably supported on a cross member 234 by a plurality of commercially available 20 linear bearing slide 358 and rail 359 assemblies. Accordingly, each mandrel is supported on the rotating mandrel support plates 230 for translation relative to the rotating mandrel support plates along a path having a radial component and a tangential component relative to the turret assembly central axis 202.
Suitable slides 358 and mating rails 359 are ACCUGLIDE CARRIAGES manufactured by as Thomson Incorporated of Port Washington, N.Y.
Each mandrel slide plate 356 has first and second cylindrical cam followers 360 and 362. The first and second cam followers 360 and 362 engage the cam surface grooves 143 and 145, respectively, through the grooves 232 in the first and second rotating mandrel support plates 230. As the mandrel bearing support 3o assemblies 350 are carried around the axis 202 on the rotating mandrel support plates 230, the cam followers 360 and 362 follow the grooves 143 and 145 on the mandrel guide plates, thereby positioning the mandrels 300 along the closed mandrel path 320.
The servo motor 222 can drive the rotatably driven turret assembly 200 35 continuously about the central axis 202 at a generally constant angular velocity.
Accordingly, the rotating mandrel support plates 230 provide continuous motion of the mandrels 300 about the closed mandrel path 320. The lineal speed of the mandrels 300 about the closed path 320 will increase as the distance of the mandrel axis 314 from the axis 202 increases. A suitable servo motor 222 is a 4o hp Model I3R2000 servo motor manufactured by the Reliance Electric Company of Cleveland, Ohio.

s The shape of the first and second cam surface grooves 143 and 145 can be varied to vary the closed mandrel path 320. In one embodiment, the first and second cam surface grooves 143 and 145 can comprise interchangeable, replaceable sectors, such that the closed mandrel path 320 comprises replaceable segments. Referring to Figure 5, the cam surface grooves 143 and 145 can to encircle the axis 202 along a path that comprises non-circular segments. In one embodiment, each of the mandrel guide plates 142 and 144 can comprise a plurality of bolted together plate sectors. Each plate sector can have a segment of the complete cam follower surface groove 143 (or 145). Referring to Figure 14, the mandrel guide plate 142 can comprise a first plate sector 142A having a cam 15 surface groove segment 143A, and a second plate sector 142B having a cam surface groove segment 143B. By unbolting one plate sector and inserting a different plate sector having a differently shaped segment of the cam surface groove, one segment of the closed mandrel path 320 having a particular shape can be replaced by another segment having a different shape.
2o Such interchangeable plate sectors can eliminate problems encountered when winding logs 51 having different diameters and/or sheet counts. For a given closed mandrel path, a change in the diameter of the logs 51 will result in a corresponding change in the position of the tangent point at which the web leaves the bedroll surface as winding is completed on a core. If a mandrel path adapted 25 for large diameter logs is used to wind small diameter logs, the web will leave the bedroll at a tangent point which is higher on the bedroll than the desired tangent point for providing proper web transfer to the next core. This shifting of the web to bedroll tangent point can result in an incoming core "running into" the web as the web is being wound onto the preceding core, and can result in premature 3o transfer of the web to the incoming core.
Prior art winders having circular mandrel paths can have air blast systems or mechanical snubbers to prevent such premature transfer when small diameter logs are being wound. The air blast systems and snubbers intermittently deflect the web intermediate the bedroll and the preceding core to shift the web to bedroll s5 tangent point as an incoming core approaches the bedroll. The present invention provides the advantage that winding of different diameter logs can be accommodated by replacing segments of the closed mandrel path (and thereby , varying the mandrel path), rather than by deflecting the web. By providing mandrel guide plates 142 and 144 which comprise two or more bolted together 4o plate sectors, a portion of the closed mandrel path, such as the web winding 15 _ segment, can be changed by unbolting one plate sector and inserting a different plate sector having a differently shaped segment of the cam surface.
' By way of illustrative example, Table 1A lists coordinates for a cam surface groove segment 143A shown in Figure 14, Table 1B lists coordinates for a cam surface groove segment 143B suitable for use in winding relatively Iarge diameter logs, and Table 1 C lists coordinates for a cam surface groove segment suitable for replacing segment 143B when winding relatively small diameter logs. The coordinates are measured from the central axis 202. Suitable cam groove segments are not limited to those listed in Tables lA-C, and it will be understood that the cam groove segments can be modified as needed to define any desired is mandrel path 320. Tables 2A lists the coordinates of the mandrel path 320 corresponding to the cam groove segments 143A and 143B described by the coordinates in Tables 1A and 1B. When Table 1C is substituted for Table 1B, the resulting changes in the coordinates of the mandrel path 320 are listed in Table 2B.
Turret Winder, Mandrel Cupping Assembly The mandrel cupping assembly 400 releasably engages the second ends 312 of the mandrels 300 intermediate the core loading segment 322 and the core stripping segment 326 of the closed mandrel path 320 as the mandrels are driven around the turret assembly central axis 202 by the rotating turret assembly 200.
Referring to Figures 2 and 9-12, the mandrel cupping assembly 400 comprises a plurality of cupping arms 450 supported on a rotating cupping arm support 410.
Each of the cupping arms 450 has a mandrel cup assembly 452 for releasably engaging the second end 312 of a mandrel 300. The mandrel cup assembly 452 so rotatably supports a mandrel cup 454 on, bearings 456. The mandrel cup 454 releasably engages the second end 312 of a mandrel 300, and supports the mandrel 300 for rotation of the mandrel about its axis 314.
Each cupping arm 450 is pivotably supported on the rotating cupping arm support 410 to permit rotation of the cupping arm 450 about a pivot axis 451 from ss a first cupped position wherein the mandrel cup 454 engages a mandrel 300, to a second uncupped position wherein the mandrel cup 454 is disengaged from the mandrel 300. The first cupped position and the second uncupped position are shown in Figures 9. Each cupping arm 450 is supported on the rotating cupping arm support in a path about the turret assembly central axis 202 wherein the 4o distance between the cupping arm pivot axis 451 and the turret assembly central axis 202 varies as a function of the position of the cupping arm 450 about the axis WO 96!38363 PCT/LTS96/07461 s 202. Accordingly, each cupping arm and associated mandrel cup 4s4 can track the second end 312 of its respective mandrel 300 as the mandrel is carried around the closed mandrel path 320 by the rotating turret assembly 200.
The rotating cupping arm support 410 comprises a cupping arm support hub 420 which is rotatably supported on the support 120 adjacent the upstanding frame to end 134 by bearings 221. Portions of the assembly are shown cut away in Figures 2 and 9 for clarity. A servo motor 422 mounted on or adjacent to the upstanding frame end 134 delivers torque to the hub 420 through a belt or chain 424 and a pulley or sprocket 426 to rotatably drive the hub 420 about the turret assembly central axis 202. The servo motor 422 is controlled to phase the rotational is position of the rotating cupping arm support 410 with respect to a reference that is a function of the angular position of the bedroll 59 about its axis of rotation, and a function of an accumulated number of revolutions of the bedroll 59. In particular, the position of the support 410 can be phased with respect to the position of the bedroll 59 within a log wind cycle, thereby synchronizing rotation of the cupping 2o arm support 410 with rotation of the turret assembly 200. The servo motors and 422 are each equipped with a brake. The brakes prevent relative rotation of the turret assembly 200 and the cupping arm support 410 . when the winding apparatus 90 is not running, to thereby preventing twisting of the mandrels 300.
The rotating cupping arm support 410 further comprises a rotating cupping 2s arm support plate 430 rigidly joined to the hub 420 and extending generally perpendicular to the turret assembly central axis 202. The rotating plate 430 is rotatably driven about the axis 202 on the hub 420. A plurality of cupping arm support members 460 are supported on the rotating plate 430 for movement relative to the rotating plate 430. Fach cupping arm 450 is pivotably joined to a 3o cupping arm support member 460 to permit rotation of the cupping arm 450 about the pivot axis 451.
Referring to Figures 10 and 11, each cupping arm support member 460 is slidably supported on a portion of the plate 430, such as a bracket 432 bolted to the rotating plate 430, for translation relative to the rotating plate 430 along a path 3s having a radial component and a tangential component relative to the turret assembly central axis 202. In one embodiment, the sliding cupping aim support member 460 can be slidably supported on a bracket 432 by a plurality of _ commercially available linear bearing slide 358 and rail 359 assemblies. A
slide 3s8 and a rail 359 can be fixed (such as by bolting) to each of the bracket 432 and 4o the support member 460, so that a slide 358 fixed to the bracket 432 slidably s engages a rail 359 fixed to the support member 460, and a slide 358 fixed to the support member 460 slidably engages a rail 3s9 fixed to the bracket 432.
The mandrel cupping assembly 400 further comprises a pivot axis positioning guide for positioning the cupping arm pivot axes 4s 1. The pivot axis positioning guide positions the cupping arm pivot axes 4s 1 to vary the distance io between each pivot axis 451 and the axis 202 as a function of position of the cupping arm 450 about the axis 202. In the embodiment shown in Figures 2 and 9-12, the pivot axis positioning guide comprises a stationary pivot axis positioning guide plate 442. The pivot axis positioning guide plate 442 extends generally perpendicular to the axis 202 and is positioned adjacent to the rotating cupping is arm support plate 430 along the axis 202. The positioning plate 442 can be rigidly joined to the support 120, such that the rotating cupping arm support plate rotates relative to the positioning plate 442.
The positioning plate 442 has a surface 444 facing the rotating support plate 430. A cam surface, such as cam surface groove 443 is disposed in the surface 20 444 to face the rotating support plate 430. Each sliding cupping arm support member 460 has an associated cam follower 462 which engages the cam surface groove 443. The cam follower 462 follows the groove 443 as the rotating plate 430 carries the support member 460 around the axis 202, and thereby positions the cupping pivot axis 451 relative to the axis 202. The groove 443 can be shaped 2s with reference to the shape of the grooves 143 and 145, so that each cupping arm and associated mandrel cup 454 can track the second end 312 of its respective mandrel 300 as the mandrel is carned around the closed mandrel path 320 by the rotating mandrel support 200. In one embodiment, the groove 443 can have substantially the same shape as that of the groove 145 in mandrel guide plate so along that portion of the closed mandrel path where the mandrel ends 312 are cupped. The groove 443 can have a circular arc shape (or other suitable shape) along that portion of the closed mandrel path where the mandrel ends 312 are uncupped. By way of illustration, Tables 3A and 3B, together, list coordinates for a groove 443 which is suitable for use with cam follower grooves 143A and 143B
ss having coordinates listed in Tables 1A and 1B. Similarly, Tables 3A and 3C, together, list coordinates for a groove 443 which is suitable for use with cam follower grooves 143A and 143C having coordinates listed in Tables 1A and 1C.
Each cupping arm 450 comprises a plurality of cam followers supported on the cupping arm and pivotable about the cupping arm pivot axis 451. The cam 4o followers supported on the cupping arm engage stationary cam surfaces to provide rotation of the cupping arm 450 between the cupped and uncupped positions.

WO 96/38363 PCTlL1S96/07461 s Referring to Figures 9-12, each cupping arm 450 comprises a first cupping arm extension 453 and a second cupping arm extension 455. The cupping arm extensions 453 and 455 extend generally perpendicular to each other from their proximal ends at the cupping arm pivot axis 451 to their distal ends. The cupping arm 450 has a clevis construction for attachment to the support member 460 at the to location of the pivot axis 451. The cupping arm extension 453 and 455 rotate as a rigid body about the pivot axis 451. The mandrel cup 454 is supported at the distal end of the extension 453. At least one cam follower is supported on the extension 453, and at least one cam follower is supported on the extension 455.
In the embodiment shown in Figures 10-12, a pair of cylindrical cam 15 followers 474A and 474B are supported on the extension 453 intermediate the pivot axis 451 and the mandrel cup 454. The cam followers 474A and 4748 are pivotable about pivot axis 451 with extension 453. The cam followers 474A, B
are supported on the extension 453 for rotation about axes 475A and 4758, which are parallel to one another. The axes 475A and 4758 are parallel to the direction 2o along which the cupping arm support member 460 slides relative to the rotating cupping arm support plate 430 when the mandrel cup is in the cupped position (upper cupping arm in Figure 9). The axes 475A and 4758 are parallel to axis 202 when the mandrel cup is in the uncupped position (lower cupping arm in Figure 9).
25 Each cupping arm 450 also comprises a third cylindrical cam follower 476 supported on the distal end of the cupping arm extension 455. The cam follower 476 is pivotable about pivot axis 451 with extension 455. The third cam follower 476 is supported on the extension 455 to rotate about an axis 477 which is perpendicular to the axes 475A and 4758 about which followers 474A and B
so rotate. The axis 477 is parallel to the direction along which the cupping arm support member 460 slides relative to the rotating cupping arm support plate when the mandrel cup is in the uncupped position, and the axis 477 is parallel to axis 202 when the mandrel cup is in the cupped position.
The mandrel cupping assembly 400 further comprises a plurality of cam 35 follower members having cam follower surfaces. Each cam follower surface is _ engageable by at least one of the cam followers 474A, 4748 and 476 to provide rotation of the cupping arm 450 about the cupping arm pivot axis 451 between the cupped and uncupped positions, and to hold the cupping arm 450 in the cupped and uncupped positions. Figure 13 is an isometric view showing four of the 4o cupping arms 450A-D. Cupping arm 450A is shown pivoting from an uncupped to a cupped position; cupping arm 4508 is in a cupped position; cupping arm s 450C is shown pivoting from a cupped position to an uncupped position; and cupping arm 450D is shown in an uncupped position. Figure 13 shows the cam follower members which provide pivoting of the cupping arms 450 as the cam follower 462 on each cupping arm support member 460 tracks the groove 443 in positioning plate 442. The rotating support plate 430 is omitted from Figure 1o for clarity.
Referring to Figures 9 and 13, the mandrel cupping assembly 400 can comprise an opening cam member 482 having an opening cam surface 483, a hold open cam member 484 having a hold open cam surface 485 (Figure 9), a closing cam member 486 comprising a closing cam surface 487, and a hold closed cam 1s member 488 comprising a hold closed cam surface 489. Cam surfaces 485 and 489 can be generally planar, parallel surfaces which extend perpendicular to axis 202. Cam surfaces 483 and 487 are generally three dimensional cam surfaces.
The cam members 482, 484, 486, and 488 are preferably stationary, and can be supported ( supports not shown) on any rigid foundation including but not limited 2o to frame 110.
As the rotating plate 430 carries the cupping arms 450 around the axis 202, the cam follower 474A engages the three dimensional opening cam surface 483 prior to the core stripping segment 326, thereby rotating the cupping arms 450 (e.g. cupping arm 450C in Figure 13) from the cupped position to the uncupped 2s position so that the web wound core can be stripped from the mandrels 300 by the core stripping apparatus 2000. The cam follower 476 on the rotated cupping arm 450 (e. g. , cupping arm 450D in Figure 13) then engages the cam surface 485 to hold the cupping arm in the uncupped position until an empty core 302 can be loaded onto the mandrel 300 along the segment 322 by the core loading apparatus so 1000. Upstream of the web winding segment 324, the cam follower 474A on the cupping arm (e.g. cupping arm 450A in Figure 13) engages the closing cam surface 487 to rotate the cupping arm 450 from the uncupped to the cupped position. The cam followers 474A and 474B on the cupping arm (e.g. cupping arm 450B in Figure 13) then engage the cam surface 489 to hold the cupping arm 3s 450 in the cupped position during web winding.
The cam follower and cam surface arrangement shown in Figures 9 and 13 provides the advantage that the cupping arm 450 can be rotated to cupped and uncupped positions as the radial position of the cupping arm pivot axis 451 moves relative to the axis 202. A typical barrel cam arrangement for cupping and 4o uncupping mandrels, such as that shown on page 1 of PCMC Manual Number O1-012-ST003 and page 3 of PCMC Manual Number O1-013-STO11 for the PCMC

s Series 150 Turret Winder, requires a linkage system to cup and uncup mandrels, and does not accommodate cupping arms that have a pivot axis whose distance from a turret axis 202 is variable.
Core Drive Roller Assembly and Mandrel Assist Assemblies 1o Referring to Figures 1 and 15-19, the web winding apparatus according to the present invention includes a core drive apparatus 500, a mandrel loading assist assembly 600, and a mandrel cupping assist assembly 700. The core drive apparatus 500 is positioned for driving cores 302 onto the mandrels 300. The mandrel assist assemblies 600 and 700 are positioned for supporting and 15 positioning the uncupped mandrels 300 during core loading and mandrel cupping.
Turret winders having a single core drive roller for driving a core onto a mandrel while the turret is stationary are well known in the art. Such arrangements provide a nip between the mandrel and the single drive roller to drive the core onto the stationary mandrel. The drive apparatus S00 of the present 2o invention comprises a pair of core drive rollers 505. The core drive rollers 505 are disposed on opposite sides of the core loading segment 322 of the closed mandrel path 320 along a generally straight line portion of the segment 322.
One of the core drive rollers, roller SOSA, is disposed outside the closed mandrel path 320, and the other of the core drive rollers, SOSB, is disposed within the closed mandrel path 320, so that the mandrels 300 are carried intermediate the core drive rollers SOSA and SOSB. The core drive rollers 505 cooperate to engage a core driven at least partially onto the mandrel 300 by the core loading apparatus 1000.
The core drive rollers 505 complete driving of the core 302 onto the mandrel 300.
The core drive rollers 505 are supported for rotation about parallel axes, and 3o are rotatably driven by servo motors through belt and pulley arrangements.
The core drive roller SOSA and its associated servo motor 510 are supported from a frame extension 515. The core drive roller SOSB and its associated servo motor 511 (shown in Figure 17) are supported from an extension of the support 120.
The core drive rollers 505 can be supported for rotation about axes that are inclined with respect to the mandrel axes 314 and the core loading segment 322 of the mandrel path 320. Referring to Figures 16 and 17, the core drive rollers are inclined to drive a core 302 with a velocity component generally parallel to a mandrel axis and a velocity component generally parallel to at least a portion of the core loading segment. For instance, core drive roller SOSA is supported for 4o rotation about axis 615 which is inclined with respect to the mandrel axes 314 and the core loading segment 322, as shown in Figures 15 and 16. Accordingly, the WO 96138363 PCT/US96lo7461 core drive rollers 505 can drive the core 302 onto the mandrel 300 during movement of mandrel along the core loading segment 322.
Referring to Figures 15 and 16, the mandrel assist assembly 600 is supported outside of the closed mandrel path 320 and is positioned to support uncupped mandrels 300 intermediate the first and second mandrel ends 310 and io 312. The mandrel assist assembly 600 is not shown in Figure 1. The mandrel assist assembly 600 comprises a rotatably driven mandrel support 610 positioned for supporting an uncupped mandrel 300 along at least a portion of the core loading segment 322 of the closed mandrel path 320. The mandrel support 610 stabilizes the mandrel 300 and reduces vibration of the uncupped mandrel 300.
is The mandrel support 610 thereby aligns the mandrel 300 with the core 302 being driven onto the second end 312 of the mandrel from the core loading apparatus 1000.
The mandrel support 610 is supported for rotation about the axis 615, which is inclined with respect to the mandrel axes 314 and the core loading segment 322.
2o The mandrel support 610 comprises a generally helical mandrel support surface 620. The mandrel support surface 620 has a variable pitch measured parallel to the axis 615, and a variable radius measured perpendicular to the axis 615.
The pitch and radius of the helical support surface 620 vary to support the mandrel along the closed mandrel path. In one embodiment, the pitch can increase as the 2s radius of the helical support surface 620 decreases. Conventional mandrel supports used in conventional indexing turret assemblies support mandrels which are stationary during core loading. The variable pitch and radius of the support surface 620 permits the support surface 620 to contact and support a moving mandrel 300 along a non-linear path.
3o Because the mandrel support 610 is supported for rotation about the axis 615, the mandrel support 610 can be driven off the same motor used to drive the core drive roller SOSA. In Figure 16, the mandrel support 610 is rotatably driven through a drive train 630 by the same servo motor 510 which rotatably drives core drive roller SOSA. A shaft 530 driven by motor 510 is joined to and ss extends through roller SOSA. The mandrel support 610 is rotatably supported on the shaft 530 by bearings 540 so as not to be driven by the shaft 530. The shaft 530 extends through the mandrel support 610 to the drive train 630. The drive train 630 includes pulley 634 driven by a pulley 632 through belt 631, and a pulley 638 driven by pulley 636 through belt 633. The diameters of pulleys 632, 40 634, 636 and 638 are selected to reduce the rotational speed of the mandrel support 610 to about half that of the core drive roller SOSA.

WO 96/38363 PCTlUS96/07461 The servo motor 510 is controlled to phase the rotational position of the mandrel support 610 with respect to a reference that is a function of the angular position of the bedroll 59 about its axis of rotation, and a function of an accumulated number of revolutions of the bedroll 59. In particular, the rotational position of the support 610 can be phased with respect to the position of the bedroll 59 within a log wind cycle, thereby synchronizing the rotational position of the support 160 with the rotational position of the turret assembly 200.
Referring to Figures 17-19, the mandrel cupping assist assembly 700 is supported inside of the closed mandrel path 320 and is positioned to support uncupped mandrels 300 and align the mandrel ends 312 with the mandrel cups 454 is as the mandrels are being cupped. The mandrel cupping assist assembly 700 comprises a rotatably driven mandrel support 710. The rotatably driven mandrel support 710 is positioned for supporting an uncupped mandrel 300 intermediate the first and second ends 310 and 312 of the mandrel. The mandrel support 710 supports the mandrel 300 along at least a portion of the closed mandrel path 2o intermediate the core loading segment 322 and the web winding segment 324 of the closed mandrel path 320. The rotatably driven mandrel support 710 can be driven by a servo motor 711. The mandrel cupping assist assembly 700, including the mandrel support 710 and the servo motor 711, can be supported from the horizontally extending stationary support 120, as shown in Figures 17 -19.
25 The rotatably driven mandrel support 710 has a generally helical mandrel support surface 720 having a variable radius and a variable pitch. The support surface 720 engages the mandrels 300 and positions them for engagement by the mandrel cups 454. The rotatably driven mandrel support 710 is rotatably supported on a pivot arm 730 having a clevised first end 732 and a second end so 734. The support 710 is supported for rotation about a horizontal axis 715 adjacent the first end 732 of the arm 730. The pivot arm 730 is pivotably supported at its second end 734 for rotation about a stationary horizontal axis 717 spaced from the axis 715. The position of the axis 715 moves in an arc as the pivot arm 730 pivots about axis 717. The pivot arm 730 includes a cam follower 3s 731 extending from a surface of the pivot arm intermediate the first and second ends 732 and 734.
A rotating cam plate 740 having an eccentric cam surface groove 741 is rotatably driven about a stationary horizontal axis 742. The cam follower 731 engages the cam surface groove 741 in the rotating cam plate 740, thereby 4o periodically pivoting the arm 730 about the axis 717. Pivoting of the arm 730 and the rotating support 710 about the axis 717 causes the mandrel support surface WO 96/38363 PC'E'/YJS96/07461 23 .
s of the rotating support 710 to periodically engage a mandrel 300 as the mandrel is carried along a predetermined portion of the closed mandrel path 320. The mandrel support surface 720 thereby positions the unsupported second end 312 of the mandrel 300 for cupping.
Rotation of the mandrel support 710 and the rotating cam plate 740 is to provided by the servo motor 711. The servo motor 711 drives a belt 752 about a pulley 754, which is connected to a pulley 756 by a shaft 755. Pulley 756, in turn, drives serpentine belt 757 about pulleys 762, 764, and idler pulley 766.
Rotation of pulley 762 drives continuous rotation of the cam plate 740.
Rotation of pulley 764 drives rotation of mandrel support 710 about its axis 715.
is While the rotating cam plate 740 shown in the Figures has a cam surface groove, in an alternative embodiment the rotating cam plate 740 could have an external cam surface for providing pivoting of the arm 730. In the embodiment shown, the servo motor 711 provides rotation of the cam plate 740, thereby providing periodic pivoting of the mandrel support 710 about the axis 717. The 2o servo motor 711 is controlled to phase the rotation of the mandrel support 710 and the periodic pivoting of the mandrel support 710 with respect to a reference that is a function of the angular position of the bedroll 59 about its axis of rotation, and a function of an accumulated number of revolutions of the bedroll 59. In particular, the pivoting of the mandrel support 710 and the rotation of the mandrel support 2s 710 can be phased with respect to the position of the bedroll 59 within a log wind cycle. The rotational position of the mandrel support 710 and the pivot position of the mandrel support 710 can thereby be synchronized with the rotation of the turret assembly 200. Alternatively, one of the servo motors 222 or 422 could be used to drive rotation of the cam plate 740 through a timing chain or other suitable so gearing arrangement.
In the embodiment shown, the serpentine belt 757 drives both the rotation of the cam plate 740 and the rotation of the mandrel support 710 about its axis 715.
In yet another embodiment, the serpentine belt 757 could be replaced by two separate belts. For instance, a first belt could provide rotation of the cam plate 3s 740 , and a second belt could provide rotation of the mandrel support 710 about its axis 715. The second belt could be driven by the first belt through a pulley arrangement, or alternatively, each belt could be driven by the servo motor through separate pulley arrangements.
Core Adhesive Application Apparatus s Once a mandrel 300 is engaged by a mandrel cup 454, the mandrel is carned along the closed mandrel path toward the web winding segment 324.
Intermediate the core loading segment 322 and the web winding segment 324, an adhesive application apparatus 800 applies an adhesive to the core 302 supported on the moving mandrel 300. The adhesive application apparatus 800 comprises a io plurality of glue application nozzles 810 supported on a glue nozzle rack 820.
Each nozzle 810 is in communication with a pressurized source of liquid adhesive (not shown) through a supply conduit 812. The glue nozzles have a check valve ball tip which releases an outflow of adhesive from the tip when the tip compressively engages a surface, such as the surface of a core 302.
is The glue nozzle rack 820 is pivotably supported at the ends of a pair of support arms 825. The support arms 825 extend from a frame cross member 133.
The cross member 133 extends horizontally between the upstanding frame members 132 and 134. The glue nozzle rack 820 is pivotable about an axis 828 by an actuator assembly 840. The axis 828 is parallel to the turret assembly 2o central axis 202. The glue nozzle rack 820 has an arm 830 carrying a cylindrical cam follower.
The actuator assembly 840 for pivoting the glue nozzle rack comprises a continuously rotating disk 842 and a servo motor 822, both of which can be supported from the frame cross member 133. The cam follower carried on the 2s arm 830 engages an eccentric cam follower surface groove 844 disposed in the continuously rotating disk 842 of the actuator assembly 840. The disk 842 is continuously rotated by the servo motor 822. The actuator assembly 840 provides periodic pivoting of the glue nozzle rack 820 about the axis 828 such that the glue nozzles 810 track the motion of each mandrel 300 as the mandrel 300 moves along so the closed mandrel path 320. Accordingly, glue can be applied to the cores supported on the mandrels 300 without stopping motion of the mandrels 300 along the closed path 320.
Each mandrel 300 is rotated about its axis 314 by a core spinning assembly 860 as the nozzles 810 engage the core 302, thereby providing distribution of s5 adhesive around the core 302. The core spinning assembly 860 comprises a servo motor 862 which provide continuous motion of two mandrel spinning belts 834A
and 8348. Referring to Figures 4, 20A, and 208, the core spinning assembly 860 _ can be supported on an extension 133A of the frame cross member 133. The servo motor 862 continuously drives a belt 864 around pulleys 865 and 867.
4o Pulley 867 drives pulleys 836A and 8368, which in turn drive belts 834A and 8348 about pulleys 868A and 8688, respectively. The belts 834A and 8348 WO 96/38363 rcT~s96io7a6i s engage the mandrel drive pulleys 338 and spin the mandrels 300 as the mandrels 300 move along the closed mandrel path 320 beneath the glue nozzles 810.
Accordingly, each mandrel and its associated core 302 are translating along the closed mandrel path 320 and rotating about the mandrel axis 314 as the core ' engages the glue nozzles 810.
to The servo motor 822 is controlled to phase the periodic pivoting of the glue nozzle rack 820 with respect to a reference that is a function of the angular position of the bedroll 59 about its axis of rotation, and a function of an accumulated number of revolutions of the bedroll 59. In particular, the pivot position of the glue nozzle rack 820 can be phased with respect to the position of 15 the bedroll 59 within a log wind cycle. The periodic pivoting of the glue nozzle rack 820 is thereby synchronized with rotation of the turret assembly 200. The pivoting of the glue nozzle rack 820 is synchronized with the rotation of the turret assembly 200 such that the glue nozzle rack 820 pivots about axis 828 as each mandrel passes beneath the glue nozzles 810. The glue nozzles 810 thereby track 2o motion of each mandrel along a portion of the closed mandrel path 320.
Alternatively, the rotating cam plate 844 could be driven indirectly by one of the servo motors 222 or 422 through a timing chain or other suitable gearing arrangement.
In yet another embodiment, the glue could be applied to the moving cores 25 by a rotating gravure roll positioned inside the closed mandrel path. The gravure roll could be rotated about its axis such that its surface is periodically submerged in a bath of the glue, and a doctor blade could be used to control the thickness of the glue on the gravure roll surface. The axis of the rotation of the giavure roll could be generally parallel to the axis 202. The closed mandrel path 320 could so include a circular arc segment intermediate the core loading segment 322 and the web winding segment 324. The circular arc segment of the closed mandrel path could be concentric with the surface of the gravure roll, such that the mandrels 300 carry their associated cores 302 to be in rolling contact with an arcuate portion of the glue coated surface of the gravure roll. The glue coated cores s5 would then be carried from the surface of the gravure roll to the web winding segment 324 of the closed mandrel path. Alternatively, an offset gravure arrangement can be provided. The offset gravure arrangement can include a first pickup roll at least partially submerged in a glue bath, and one or more transfer rolls for transferring the glue from the first pickup roll to the cores 302.
Core Loading Apparatus s The core loading apparatus 1000 for conveying cores 302 onto moving mandrels 300 is shown in Figures 1 and 21-23. The core loading apparatus comprises a core hopper 1010, a core loading carrousel 1100, and a core guide assembly 1500 disposed intermediate the turret winder 100 and the core loading carrousel 1100. Figure 21 is a perspective view of the rear of the core loading to apparatus 1000. Figure 21 also shows a portion of the core stripping apparatus 2000. Figure 22 is an end view of the core loading apparatus 1000 shown partially cut away and viewed parallel to the turret assembly central axis 202.
Figure 23 is an end view of the core guide assembly 1500 shown partially cut away.
is Referring to Figures 1 and 21-23, the core loading carrousel 1100 comprises a stationary frame 1110. The stationary frame can include vertically upstanding frame ends 1132 and 1134, and a frame cross support 1136 extending horizontally intermediate the frame ends 1132 and 1134. Alternatively, the core loading carrousel 1100 could be supported at one end in a cantilevered fashion.
2o In the embodiment shown, an endless belt 1200 is driven around a plurality of pulleys 1202 adjacent the frame end 1132. Likewise, an endless belt 1210 is driven around a plurality of pulleys 1212 adjacent the frame end 1134. The belts are driven around their respective pulleys by a servo motor 1222. A plurality of support rods 1230 pivotably connect core trays 1240 to lugs 1232 attached to the 2s belts 1200 and 1210. In one embodiment, a support rod 1230 can extend from each end of a core tray 1240. In an alternative embodiment, the support rods 1230 can extend in parallel rung fashion between lugs 1232 attached to the belts 1200 and 1210, and each core tray 1240 can be hung from one of the support rods 1230. The core trays 1240 extend intermediate the endless belts 1200 and 1210, so and are carried in a closed core tray path 1241 by the endless belts 1200 and 1210.
The servo motor 1222 is controlled to phase the motion of the core trays with respect to a reference that is a function of the angular position of the bedroll 59 about its axis of rotation, and a function of an accumulated number of revolutions of the bedroll 59. In particular, the position of the core trays can be phased with 3s respect to the position of the bedroll 59 within a log wind cycle, thereby synchronizing the movement of the core trays with rotation of the turret assembly 200.
The core hopper 1010 is supported vertically above the core carrousel 1100 and holds a supply of cores 302. The cores 302 in the hopper 1010 are gravity fed 4o to a plurality of rotating slotted wheels 1020 positioned above the closed core tray path. The slotted wheels 1020, which can be rotatably driven by the servo motor WD 96/38363 rcT~s96io~a61 s 1222, deliver a core 302 to each core tray 1240. be used in place of the slotted wheels 1020 to deliver a core to each core tray 1240. Alternatively, a lugged belt could be used in place of the slotted wheels to pick up a core and place a core in each core tray. A core tray support surface 1250 (Figure 22) positions the core trays to receive a core from the slotted wheels 1020 as the core trays pass beneath to the slotted wheels 1020. The cores 302 supported in the core trays 1240 are carried around the closed core tray path 1241.
Referring to Figure 22, the cores 302 are carried in the trays 1240 along at least a portion of the closed tray path 1241 which is aligned with core loading segment 322 of the closed mandrel path 320. A core loading conveyor 1300 is is positioned adjacent the portion of the closed tray path 1241 which is aligned with the core loading segment 322. The core loading conveyor 1300 comprises an endless belt 1310 driven about pulleys 1312 by a servo motor 1322. The endless belt 1310 has a plurality of flight elements 1314 for engaging the cores 302 held in the trays 1240. The flight element 1314 engages a core 302 held in a tray 1240 2o and pushes the core 302 at least part of the way out of the tray 1240 such that the core 302 at least partially engages a mandrel 300. The flight elements 1314 need not push the core 302 completely out of the tray 1240 and onto the mandrel 300, but only far enough such that the core 302 is engaged by the core drive rollers SOS.
2s The endless belt 1310 is inclined such that the elements 1314 engage the cores 302 held in the core trays 1240 with a velocity component generally parallel to a mandrel axis and a velocity component generally parallel to at least a portion of the core loading segment 322 of the closed mandrel path 320. In the embodiment shown, the core trays 1240 carry the cores 302 vertically, and the 3o flight elements 1314 of the core loading conveyor 1300 engage the cores with a vertical component of velocity and a horizontal component of velocity. The servo motor 1322 is controlled to phase the position of the flight elements 1314 with respect to a reference that is a function of the angular position of the bedroll 59 about its axis of rotation, and a function of an accumulated number of revolutions ss of the bedroll 59. In particular, the position of the flight elements 1314 can be phased with respect to the position of the bedroll 59 within a log wind cycle.
The motion of the flight elements 1314 can thereby be synchronized with the position of the core trays 1240 and with the rotational position of the turret assembly 200.
The core guide assembly 1500 disposed intermediate the core loading 4o carrousel 1100 and the turret winder 100 comprises a plurality of core guides 1510. The core guides position the cores 302 with respect to the second ends of the mandrels 300 as the cores 302 are driven from the core trays 1240 by the core loading conveyor 1300. The core guides 1510 are supported on endless belt conveyors 1512 driven around pulleys 1514. The belt conveyors 1512 are driven by the servo motor 1222, through a shaft and coupling arrangement (not shown).
The core guides 1510 thereby maintain registration with the core trays 1240.
The io core guides 1510 extend in parallel rung fashion intermediate the belt conveyors 1512, and are carned around a closed core guide path 1541 by the conveyors 1512.
At least a portion of the closed core guide path 1541 is aligned with a portion of the closed core tray path 1241 and a portion of the core loading Z5 segment 322 of the closed mandrel path 320. Each core guide 1510 comprises a core guide channel 1550 which extends from a first end of the core guide 1510 adjacent the core loading carrousel 1100 to a second end of the core guide adjacent the turret winder 100. The core guide channel 1550 converges as it extends from the first end of the core guide 1510 to the second end of the core 2o guide. Convergence of the core guide channel 1550 helps to center the cores with respect to the second ends 312 of the mandrels 300. In Figure 1, the core guide channels 1550 at the first ends of the core guides 1510 adjacent the core loading carrousel are flared to accommodate some misalignment of cores 302 pushed from the core trays 1240.
Core Stripping Apparatus Figures 1, 24 and 25A-C illustrate the core stripping apparatus 2000 for removing logs 51 from uncupped mandrels 300. The core stripping apparatus 2000 comprises an endless conveyor belt 2010 and servo drive motor 2022 3o supported on a frame 2002. The conveyor belt 2010 is positioned vertically beneath the closed mandrel path adjacent to the core stripping segment 326.
The endless conveyor belt 2010 is continuously driven around pulleys 2012 by a drive belt 2034 and servo motor 2022. The conveyor belt 2010 carries a plurality of flights 2014 spaced apart at equal intervals on the conveyor lilt 2010 (two flights ss 2014 in Figure 24). The flights 2014 move with a linear velocity V (Figure 25A).
Each flight 2014 engages the end of a log 51 supported on a mandrel 300 as the mandrel moves along the core stripping segment 326. , The servo motor 2022 is controlled to phase the position of the flights 2014 with respect 'to a reference that is a function of the angular position of the bedroll 40 59 about its axis of rotation, and a function of an accumulated number of revolutions of the bedroll 59. In particular, the position of the flights 2014 can be WO 96/38363 PCTlUS96/07461 s phased with respect to the position of the bedroll 59 within a log wind cycle.
Accordingly, the motion of the flights 2014 can be synchronized with the rotation of the turret assembly 200.
The flighted conveyor belt 2010 is angled with respect to mandrel axes 314 as the mandrels 300 are carned along a straight line portion of the core stripping to segment 326 of the closed mandrel path. For a given mandrel speed along the core stripping segment 326 and a given conveyor flight speed V, the included angle A between the conveyor 2010 and the mandrel axes 314 is selected such that the flights 2014 engage each log 51 with a first velocity component V 1 generally parallel to the mandrel axis 314 to push the logs off the mandrels 300, and a 15 second velocity component V2 generally parallel to the straight line portion of the core stripping segment 326. In one embodiment, the angle A can be about 4-7 degrees.
As shown in Figures 25A-C, the flights 2014 are angled with respect to the conveyor belt 2010 to have a log engaging face which forms an included angle 2o equal to A with the centerline of the belt 2010. The angled log engaging face of the flight 2014 is generally perpendicular to the mandrel axes 314 to thereby squarely engage the ends of the logs 51. Once the log 51 is stripped from the mandrel 300, the mandrel 300 is carried along the closed mandrel path to the core loading segment 322 to receive another core 302. In some instances it may be 2s desirable to strip an empty core 302 from a mandrel. For instance, it may be desirable to strip an empty core 302 from a mandrel during startup of the turret winder, or if no web material is wound onto a particular core 302.
Accordingly, the flights 2014 can each have a deformable rubber tip 2015 for slidably engaging the mandrel as the web wound core is pushed frem the mandrel. Accordingly, the so flights 2014 contact both the core 302 and the web wound on the core 302, and have the ability to strip empty cores (i. e. core on which no web is wound) from the mandrels.
Log Reject Apparatus ss Figure 21 shows a log reject apparatus 4000 positioned downstream of the core stripping apparatus 2000 for receiving logs 51 from the core stripping apparatus 2000. A pair of drive rollers 2098A and 2098B engage the logs S 1 leaving the mandrels 300, and propel the logs 51 to the log reject apparatus 4000.
The log reject apparatus 4000 includes a servo motor 4022 and a selectively 4o rotatable reject element 4030 supported on a frame 4010. The rotatable reject element 4030 supports a first set of log engaging arms 4035A and a second set of s oppositely extending log engaging arms 4035B (three arms 4035A and three arms 4035B shown in Figure 21).
During normal operation, the logs 51 received by the log reject apparatus 4000 are carried by continuously driven rollers 4050 to a first acceptance station, such as a storage bin or other suitable storage receptacle. The rollers 4050 can be to driven by the servo motor 2022 through a gear train or pulley arrangement to have a surface speed a fixed percentage higher than that of the flights 2014.
The rollers 4050 can thereby engage the logs 51, and carry the logs 51 at a speed higher than that at which the logs are propelled by the flights 2014.
In some instances, it is desirable to direct one or more logs 51 to a second, 15 reject station, such as a disposal bin or recycle bin. For instance, one or more defective logs 51 may be produced during startup of the web winding apparatus 90, or alternatively, a log defect sensing device can be used to detect defective logs 51 at any time during operation of the apparatus 90. The servo motor 4022 can be controlled manually or automatically to intermittently rotate the element 20 4030 in increments of about 180 degrees. Each time the element 4030 is rotated 180 degrees, one of the sets of log engaging arms 4035A or 4035B engages the log 51 supported on the rollers 4050 at that instant. The log is lifted from the rollers 4050, and directed to the reject station. At the end of the incremental rotation of the element 4030, the other set of arms 4035A or 4035B is in position 25 to engage the next defective log.
Mandrel Description Figure 26 is a partial cross-sectional view of a mandrel 300 according to the present invention. The mandrel 300 extends from the first end 310 to the second so end 312 along the mandrel longitudinal axis 314. Each mandrel includes a mandrel body 3000, a deformable core engaging member 3100 supported on the mandrel 300, and a mandrel nosepiece 3200 disposed at the second end 312 of the mandrel. The mandrel body 3000 can include a steel tube 3010, a steel endpiece 3040, and a non-metallic composite mandrel tube 3030 extending intermediate the steel tube 3010 and the steel endpiece 3040.
At least a portion of the core engaging member 3100 is deformable from a first shape to a second shape for engaging the inner surface of a hollow core after the core 302 is positioned on the mandrel 300 by the core loading apparatus 1000. The mandrel nosepiece 3200 can be slidably supported on the mandrel 300, 4o and is displaceable relative to the mandrel body 3000 for deforming the deformable core engaging member 3100 from the first shape to the second shape.

s The mandrel nosepiece is displaceable relative to the mandrel body 3000 by a mandrel cup 454.
The deformable core engaging member 3100 can comprise one or more elastically deformable polymeric rings 3110 (Figure 30) radially supported on the steel endpiece 3040. By "elastically deformable" it is meant that the member to deforms from the first shape to the second shape under a load, and that upon release of the load the member 3100 returns substantially to the first shape.
The mandrel nosepiece can be displaced relative to the endpiece 3040 to compress the rings 3110, thereby causing the rings 3100 to elastically buckle in a radially outwardly direction to engage the inside diameter of the core 302. Figure 27 is illustrates deformation of the deformable core engaging member 3100.
Figures 28 and 29 are enlarged views of a portion of the nosepiece 3200 showing motion of the nosepiece 3200 relative to steel endpiece 3040.
Referring to the components of the mandrel 300 in more detail, the first and second bearing housings 352 and 354 have bearings 352A and 354A for 2o rotatably supporting the steel tube 3010 about the mandrel axis 314. The mandrel drive pulley 338 and the idler pulley 339 are positioned on the steel tube intermediate the bearing housings 352 and 354. The mandrel drive pulley 338 is fixed to the steel tube 3010, and the idler pulley 339 can be rotatably supported on an extension of the bearing housing 352 by idler pulley bearing 339A, such that 2s the idler pulley 339 free wheels relative to the steel tube 3010.
The steel tube 3010 includes a shoulder 3020 for engaging the end of a core 302 driven onto the mandrel 300. The shoulder 3020 is preferably frustum shaped, as shown in Figure 26, and can have a textured surface to restrict rotation of the core 302 relative to the mandrel body 3000. The surface of the frustum 3o shaped shoulder 3020 can be textured by, a plurality of axially and radially extending splines 3022. The splines 3022 can be uniformly spaced about the circumference of the shoulder 3020. The splines can be tapered as they extend axially from left to right in figure 26, and each spline 3022 can have a generally triangular cross-section at any given location along its length, with a relatively 3s broad base attachment to the shoulder 3020 and a relatively narrow apex for engaging the ends of the cores.
The steel tube 3010 has a reduced diameter end 3012 (Figure 26) which extends from the shoulder 3020. The composite mandrel tube 3030 extends from a first end 3032 to a second end 3034. The first end 3032 extends over the 4o reduced diameter end 3012 of the steel tube 3010. The first end 3032 of the composite mandrel tube 3030 is joined to the reduced diameter end 3012, such as by adhesive bonding. The composite mandrel tube 3030 can comprise a carbon composite construction. Referring to Figums 26 and 30, a second end 3034 of the composite mandrel tube 3030 is joined to the steel endpiece 3040. The endpiece 3040 has a first end 3042 and a second end 3044. 'Ibe ~ ~ 3042 of the endpiect 3040 fits inside of, and is joie m ~ dad end 3034 of the composite to mandrel tube 3030.
The deformable core engaging m~ba 3100 is spy along the mandrel axis 314 intermediate the s!>ould~ 3p20 and the nosepe~ 3200. The deformable ~ g member 3100 can comprix as aaau>u ~g 6aviag as inner diameter than the outer diameter of a portion of the endpiae 3040, and s can be radially supports ca t6e endpiece 3040. T~ ale came engaging member 3100 can extend axi~y ~,~ a ~~ 3041 on the 3040 and a shoulder 3205 on the nosepiece 3200, as shown i~ ~~ 3p, The member 3100 preferably has a suY ~t~y _ continuous s<rrfal<x for radislly engaging a ~. A suitable ooet~uo~ surface can m be provided by a ring shaped member 3100. A s<rbY ~umfe~allY
o°°for radiaU
forces cc y °°r° ~° that the °~i ~ core to the mad o°. Co°~~ forces, such as thore ~, ~ c~or~e loclang lu=s. can cause or pie:cinE of thQ
Gore By ~subst»aoiauY
oY ~~auous~ it is meant thu the surfsa of the member 3100 ~~ su~aCe of the core around a last about 51 penoent, more preferably around at least about 75 percent, and most preferably around at least about 90 per~comt of the ' of the cone.
~ ~~ °°m member 3100 an oom~ tvo elast~ll Y
deformable ring 3110A and 31108 formed of 40 ~p~ ~ a~
~e:mp 3130, 3140, and 3150 formed of a rehuivdy >ratda 6p ~D~
_ The riap 3110A and 3110B each Gave an ~ Y
oohs ~Oe 3112 for eapgiag a ~. ~ ~ 3130 and 3140 can have Z'~'°d -for engaging the shoulders 3041 and 3205, n~e~v~y.
3s Tba rigs 3150 as have a g~eneraily T shaped ~.. ~ 3110A extends benvaea and is joined to rings 3130 and 3150. Rigs 3110B extends ~
is joined to rings 3150 and 3140.
T~ aosepiece 3200 is slidably st,p~n~ ~ 3~ ~ permit axial ~Pt of the nosepieoa 3200 re ve to the ~ieoe 3040. Suitable 3~ a 1.E~COLOY base material with a BOAT*15 coating. Such btuhiags are manufactured by LSO of Clrvelaad, * =Trade-mark s Ohio. When nosepiece 3200 is displaced along the axis 314 toward the endpiece 3040, the deformable core engaging member 3100 is compressed between the shoulders 3041 and 3205, causing the rings 3110A and 3110B to buckle radially outwardly, as shown in phantom in Figure 30.
Axial motion of the nosepiece 3200 relative to the endpiece 3040 is limited 1o by a threaded fastener 3060, as shown in Figures 28 and 29. The fastener has a head 3062 and a threaded shank 3064. The threaded shank 3064 extends through an axially extending bore 3245 in the nosepiece 3200, and threads into a tapped hole 3045 disposed in the second end 3044 of the endpiece 3040. The head 3062 is enlarged relative to the diameter of the bore 3245, thereby limiting the 15 axial displacement of the nosepiece 3200 relative to the endpiece 3040. A
coil spring 3070 is disposed intermediate the end 3044 of the endpiece 3040 and the nosepiece 3200 for biasing the mandrel nosepiece from the mandrel body.
Once a core is loaded onto the mandrel 300, the mandrel cupping assembly provides the actuation force for compressing the rings 3110A and 3110B. As 2o shown in Figure 28, a mandrel cup 454 engages the nosepiece 3200, thereby compressing the spring 3070 and causing the nosepiece to slide axially along mandrel axis 314 toward the end 3044. This motion of the nosepiece 3200 relative to the endpiece 3040 compresses the rings 3110A and 3110B, causing them to deform radially outwardly to have generally convex surfaces 3112 for 25 engaging a core on the mandrel. Once winding of the web on the core is complete and the mandrel cup 454 is retracted, the spring 3070 urges the nosepiece 3200 axially away from the endpiece 3040, thereby returning the rings 3110A and 3110B to their original, generally cylindrical undeformed shape. The core can then be removed from the mandrel by the core stripping apparatus.
3o The mandrel 300 also comprises an, antirotation member for restricting rotation of the mandrel nosepiece 3200 about the axis 314, relative to the mandrel body 3000. The antirotation member can comprise a set screw 3800. The set screw 3800 threads into a tapped hole which is perpendicular to and intersects the tapped hole 3045 in the end 3044 of the endpiece 3040. The set screw 3800 abuts 35 against the threaded fastener 3060 to prevent the fastener 3060 from coming loose from the endpiece 3040. The set screw 3800 extends from the endpiece 3040, and is received in an axially extending slot 3850 in the nosepiece 3200. Axial sliding of the nosepiece 3200 relative to the endpiece 3040 is accommodated by the elongated slot 3850, while rotation of the nosepiece 3200 relative to the endpiece 40 3040 is prevented by engagement of the set screw 3800 with the sides of the slot 3850.

s Alternatively, the deformable core engaging member 3100 can comprise a metal component which elastically deforms in a radially outward direction, such as by elastic buckling, when compressed. For instance, the deformable core engaging member 3100 can comprise one or more metal rings having circumferentially spaced apart and axially extending slots. Circumferentially to spaced apart portions of a ring intermediate each pair of adjacent slots deform radially outwardly when the ring is compressed by motion of the sliding nosepiece during cupping of the second end of the mandrel.
Servo Motor Control System 15 The web winding apparatus 90 can comprise a control system for phasing the position of a number of independently driven components with respect to a common position reference, so that the position of one of the components can be synchronized with the position of one or more other components. By "independently driven" it is meant that the positions of the components are not 2o mechanically coupled, such as by mechanical gear trains, mechanical pulley arrangements, mechanical linkages, mechanical cam mechanisms, or other mechanical means. In one embodiment, the position of each of the independently driven components can be electronically phased with respect to one or more other components, such as by the use of electronic gear ratios or electronic cams.
25 In one embodiment, the positions of the independently driven components is phased with respect to a common reference that is a function of the angular position of the bedroll 59 about its axis of rotation, and a function of an accumulated number of revolutions of the bedroll 59. In particular, the positions of the independently driven components can be phased with respect to the position 30 of the bedroll 59 within a log wind cycle.
Each revolution of the bedroll 59 corresponds to a fraction of a log wind cycle. A log wind cycle can be defined as equaling 360 degree increments. For instance, if there are sixty-four 11 1/4 inch sheets on each web wound log 51, and if the circumference of the bedroll is 45 inches, then four sheets will be wound per s5 bedroll revolution, and one log cycle will be completed (one log 51 will be wound) for each 16 revolutions of the bedroll. Accordingly, each revolution of the bedroll 59 will correspond to 22.5 degrees of a 360 degree log wind cycle.
The independently driven components can include: the turret assembly 200 driven by motor 222 (e.g. a 4HP servo motor); the rotating mandrel cupping arm 4o support 410 driven by the motor 422 (e.g. a 4 HP Servo motor); the roller SOSA
and mandrel support 610 driven by a 2 HP servo motor 510 (the roller SOSA and s the mandrel support 610 are mechanically coupled); the mandrel cupping support 710 driven by motor 711 (e.g. a 2 HP servo motor); the glue nozzle rack actuator assembly 840 driven by motor 822 (e.g. a 2 HP servo motor); the core carrousel 1100 and core guide assembly 1500 driven by a 2 HP servo motor 1222 (rotation ' of the core carrousel 1100 and the core guide assembly 1500 are mechanically l0 coupled); the core loading conveyor 1300 driven by motor 1322 (e.g. a 2 HP
servo motor); and the core stripping conveyor 2010 driven by motor 2022 (e.g.
a 4 HP servo motor). Other components, such as core drive roller SOSB/motor 511 and core glue spinning assembly 860/motor 862, can be independently driven, but do not require phasing with the bedroll 59. Independently driven components and 15 their associated drive motors are shown schematically with a programmable control system 5000 in Figure 31.
The bedroll 59 has an associated proximity switch. The proximity switch makes contact once for each revolution of the bedroll 59, at a given bedroll angular position. The programmable control system 5000 can count and store the 2o number of times the bedroll 59 has completed a revolution (the number of times the bedroll proximity switch has made contact) since the completion of winding of the last log S 1. Each of the independently driven components can also have a proximity switch for defining a home position of the component.
The phasing of the position of the independently driven components with 25 respect to a common reference, such as the position of the bedroll within a log wind cycle, can be accomplished in a closed loop fashion. The phasing of the position of the independently driven components with respect to the position of the bedroll within a log wind cycle can include the steps of: determining the rotational position of the bedroll within a log wind cycle, determining the actual 3o position of a component relative to the rotational position of the bedroll within the log wind cycle; calculating the desired position of the component relative to the rotational position of the bedroll within the log wind cycle; calculating a position error for the component from the actual and desired positions of the component relative to the rotational position of the bedroll within the log wind cycle;
and 35 reducing the calculated position error of the component.
In one embodiment, the position error of each component can be calculated once at the start up of the web winding apparatus 90. When contact is first made by the bedroll proximity switch at start up, the position of the bedroll with respect to the log wind cycle can be calculated based upon information stored in the ao random access memory of the programmable control system 5000. In addition, when the proximity switch associated with the bedroll first makes contact on start s up, the actual position of each component relative to the rotational position of the bedroll within the log cycle is determined by a suitable transducer, such as an encoder associated with the motor driving the component. The desired position of the component relative to the rotational position of the bedroll within the log wind _ cycle can be calculated using an electronic gear ratio for each component stored in 1o the random access memory of the programmable control system s000.
When the bedroll proximity switch first makes contact at the start up of the winding apparatus 90, the accumulated number of rotations of the bedroll since completion of the last log wind cycle, the sheet count per log, the sheet length, and the bedroll circumference can be read from the random access memory of the is programmable control system 5000. For example, assume the bedroll had completed seven rotations into a log wind cycle when the winding apparatus 90 was stopped (e.g. shutdown for maintenance). When the bedroll proximity switch first makes contact upon re-starting the winding apparatus 90, the bedroll completes its eighth full rotation since the last log wind cycle was completed.
2o Accordingly, the bedroll at that instant is at the 180 degree (halfway) position of the log wind cycle, because for the given sheet count, sheet length and bedroll circumference, each rotation of the bedroll corresponds to 4 sheets of the 64 sheet log, and 16 revolutions of the bedroll are required to wind one complete log.
When contact is first made by the bedroll proximity switch at start up, the 2s desired position of each of the independently driven components with respect to the position of the bedroll in the log wind cycle is calculated based upon the electronic gear ratio for that component and the position of the bedroll within the wind cycle. The calculated, desired position of each independently driven component with respect to the log wind cycle can then be compared to the actual 3o position of the component measured by , a transducer, such as an encoder associated with the motor driving the component. The calculated, desired position of the component with respect to the bedroll position in the log wind cycle is compared to the actual position of the component with respect to the bedroll position in the log wind cycle to provide a component position error. The motor 3s driving the component can then be adjusted, such as by adjusting the motors speed with a motor controller, to drive the position error of the component to zero.
For example, when the proximity switch associated with the bedroll first makes contact at start up, the desired angular position of the rotating turret assembly 200 with respect to the position of the bedroll in the log wind cycle can 4o be calculated based upon the number of revolutions the bedroll has made during the current log wind cycle, the sheet count, the sheet length, the circumference of s the bedroll, and the electronic gear ratio stored for the turret assembly 200. The actual angular position of the turret assembly 200 is measured using a suitable ' transducer. Referring to Figure 31, a suitable transducer is an encoder 5222 associated with the servo motor 222. The difference between the actual position of the turret assembly 200 and its desired position relative to the position of the to bedroll within the log wind cycle is then used to control the speed of the motor 222, such as with a motor controller 5030B, and thereby drive the position error of the turret assembly 200 to zero.
The position of the mandrel cupping arm support 410 can be controlled in a similar manner, so that rotation of the support 410 is synchronized with rotation of is the turret assembly 200. An encoder 5422 associated with the motor 422 driving the mandrel cupping assembly 400 can be used to measure the actual position of the support 410 relative to the bedroll position in the log wind cycle. The speed of the servo motor 422 can be varied, such as with a motor controller 5030A, to drive the position error of the support 410 to zero. By phasing the angular 2o positions of both the turret assembly 200 and the support 410 relative to a common reference, such as the position of the bedroll 59 within the log wind cycle, the rotation of the mandrel cupping arm support 410 is synchronized with that of the turret assembly 200, and twisting of the mandrels 300 is avoided.
Alternatively, the position of the independently driven components could be 2s phased with respect to a reference other than the position of the bedroll within a log wind cycle.
The position error of an independently driven component can be reduced to zero by controlling the speed of the motor driving that particular component.
In one embodiment, the value of the position error is used to determine whether the so component can be brought into phase with the bedroll more quickly by increasing the drive motor speed, or by decreasing the motor speed. If the value of the position error is positive (the actual position of the component is "ahead" of the desired position of the component), the drive motor speed is decreased. If the value of the position error is negative (the actual position of the component is ss "behind" the desired position of the component), the drive motor speed is increased. In one embodiment, the position error is calculated for each component when the bedroll proximity switch first makes contact at start up, and a linear variation in the speed of the associated drive motor is determined to drive the position error to zero over the remaining portion of the log wind cycle.
Normally, the position of a component in log wind cycle degrees should correspond to the position of the bedroll in log cycle degrees (e.g., the position of a component in log wind cycle degrees should be zero when ~ ~sitioa of the ~ro0 k lag wind cycle degrees is zero.) For instance, why t~ ~U
proximity switch melees contact at the begin~g of a wind cycle (zero wind cycle degrees), the motor 222 and ttte turret assembly 200 should be at as aagu>ar position such that the actual position of the turret assembly 200 as nu~,~ by.
~
to encoder 5222 correspond: to a c~a~d, ~pof zero wind cycle d~ees- However, if the bait 224 driving the turret assembly 200 should slip, or if the axis of tba motor 222 should otbmwise move reladve to the turret assembly 200, the eaooder wiU no longer pnvvide tire correct acdni pof the corral assembly 200.
is Ia ooa embodiment the programmable c~o~ sys~ can be permed to ~ ~ opet~ar to pivvide an offset f~ that p~pZ'he othset can be Qa~ed iab the nmdom aooesu memory of tim ~mmabk coati _ sysomm in iacof abort 1/10 of a log wind cycle deb, p,y~
when the acmav p~ tlm oompooeat ma~c6m the desired, ' m of the componem by ~ the oompooent is comi~dated to be in P~ w~ to the poattioo of the bedevil is the log wnd cycle. Such as offxt cs~bility aUoas fed opemtioe of the winder appsnous 9p untU
meehaoical adjus~mts coo be made.
f ° °°a ~°~°°t' a °
pr°~~le coaesoi sysdem 5000 for Pthe pos~ion of the mdepeodeatly ~ ~a Proi~mabls ekaroaie drive comoi sy*stem having pro~ammabb ~
gory, sub as an AUIbMAX pso~mmabh drive oo~ol system mamsa~a by ma y or cl~evna, obio.
AvI~A~ proaammabb drive system as be opeea~ed using the foiJoviag s _ . Avra;~wx system ~~ ~~t v~ 3.o r2.3oo~s; Acrro~ux s Ms~t »3686; asd wv'r01tA7C 8ardptne 813666,3668. a wtU1 be tmd~r~ood, b~., that in other embodiments at the presort ivreotioa, ~ ~coi :Foams, such a: those avaibbie from ~maon fir.
3s Ciiddiog: and Lmrk, and the Gasmal Compmy ~ al'o be used to Figure 31, the AZTfOMAX programmable drive oomtoi system iacludea oaa or more power suppliGt 3010, a enamor memory madvle 5012, two Model '7010 miciapiocesaota 5014, s network cooaectioo module 5016, a plurality of dual axis programmable cards 5018 (each axis to a motor deving 40 one of the independently driven compooe~s), trsolvec i~rnt ovodule: 5020, . ~c~ soz2, and a vAC d~~,l output cas,a so24.
* = Trade-mark s AUTOMAX system also includes a plurality of model HR2000 motor controllers 5030A-K. Each motor controller is associated with a particular drive motor.
For instance, motor controller 5030B is associated with the servo motor 222, which drives rotation of the turret assembly 200.
The common memory module 5012 provides an interface between multiple to microprocessors. The two Model 7010 microprocessors execute software programs which control the independently driven components. The network connection module 5016 transmits control and status data between an operator interface and other components of the programmable control system 5000, as well as between the programmable control system 5000 and a programmable mandrel 15 drive control system 6000 discussed below. The dual axis programmable cards 5018 provide individual control of each of the independently driven components.
The signal from the bedroll proximity switch is hardwired into each of the dual axis programmable cards 5018. The resolver input modules 5020 convert the angular displacement of the resolvers 5200 and 5400 (discussed below) into digital 2o data. The general input/output cards 5022 provide a path for data exchange among different components of the control system 5000. The VAC digital output card 5024 provides output to brakes 5224 and 5424 associated with motors 222 and 422, respectively.
In one embodiment, the mandrel drive motors 332A and 332B are controlled 2s by a programmable mandrel drive control system 6000, shown schematically in Figure 32. The motors 332A and 332B can be 30 IiP, 460 Volt AC motors. The programmable mandrel drive control system 6000 can include an AIJTOMAX
system including a power supply 6010, a common memory module 6012 having random access memory, two central processing units 6014, a network 3o communication card 6016 for providing communication between the programmable mandrel control system 6000 and the programmable control system 5000, resolver input cards 6020A-6020D, and Serial Dual Port cards 6022A and 6022B. The programmable mandrel drive control system 6000 can also include AC motor controllers 6030A and 6030B, each having current feedback 6032 and 35 speed regulator 6034 inputs. Resolver input cards 6020A and 6020B receive inputs from resolvers 6200A and 6200B, which provide a signal related to the . rotary position of the mandrel drive motors 332A and 332B, respectively.
Resolver input card 6020C receives input from a resolver 6200C, which provides a signal related to the angular position of the rotating turret assembly 200.
In one 4o embodiment, the resolver 6200C and the resolver 5200 in Figure 31 can be one i0 s and the same. Resolver input card 6020D receives input from a resolver 6200D, which provides a signal related to the angular position of the bedroll 59.
An operator interface (not shown), which can include a keyboard and display screen, can be used to enter data into, and display data from the programmable drive system 5000. A suitable operator interface is a XYCOM
Series 8000 Industrial Workuation manufactured by the Xycom Corporation of Saline, Michigan. Suitable operator interface software for ux with the XYCOM
Series 8000 workstation is ISoavailable from tlas Computer Technology Corporation of Milford, Ohio. The individually driven components can be jogged forward or reverx, individually or tog~h~ by ~ . In is addition, the operator can type is a desired offset, as dexribed above, from the keyboud. The ability to monitor the position, velocity, and currtnt associated with each drive motor is built into (hard wired ia~) the dual axis programmable cards 5018. The position, velocity, and current associated with each drive motor is measured and cxmparnd with associated position, velocity and current Limits, 2o respavvely. The programmable conavi system 5000 halts operation of all the -- drive motors if any of tire position, velocity, or curt limits ax , Ia > figure 2, the rotatibly driven turner assembly. 200 and the ttagtiag cupping arm support Place 430 are totatably driven by sepuate servo motors 222 and 422, respearvely. The motors 222 and 422 can continuously rotate the turret is asxmbly 200 and the ranting cupping arm support Plate 430 about tlu; cennal axis 202, at a generally coo,~at angular velocity. The angular position of the tumt assembly 200 and the angular position of the cupping arm support plate 430 art mby po~tioa rtaolvas 5200 and 5400, t~pectivelY, sbown x6ematic~liy is hrgnsz 31. The programmable drive systaa 5000 halts operation of all the die motors if the angular position the tuna assembly 200 change more than a predeoerminai of angular d~ wig to the angular position of the support plate 430, a: measured by the position resolvers 5200 and 5400.
In no alttramva embodiment, the rontably driven turret assembly 200 and ~ ~pp~i area support plate 430 could be mounted on a common hub and be ss d 'rnen by a siagb dmro motor. Sib as arringe~ Gas the dimdvaatagn t~
torsion of the common hnb iateroonaecting the rvtitiag turret and cupping arm support aaxmblia can ~ in vibration or mispoaitioaiag of the mandrel cups with rr~ecx to thQ mandrel cads if the cooaecdag hub is not made sufficiently massive and still: The web winding ap~puatus of the prexnt iaveution drives the tiY xPPo~d sting turret asxmbly 200 sad rontiag cupping arm '- support plate 430 with separate drive motor: that are controlled to maintain * = Trade-mark s positional phasing of the turret assembly 200 and the mandrel cupping arms with a common reference, thereby mechanically decoupling rotation of the turret assembly 200 and the cupping arm support plate 430.
In the embodiment described, the motor driving the bedroll 59 is separate from the motor driving the rotating turret assembly 200 to mechanically decouple to rotation of the turret assembly 200 from rotation of the bedroll 59, thereby isolating the turret assembly 200 from vibrations caused by the upstream winding equipment. Driving the rotating turret assembly 200 separately from the bedroll 59 also allows the ratio of revolutions of the turret assembly 200 to revolutions of the bedroll 59 to be changed electronically, rather than by changing mechanical is gear trains.
Changing the ratio of turret assembly rotations to bedroll rotations can be used to change the length of the web wound on each core, and therefore change the number of perforated sheets of the web which are wound on each core. For instance, if the ratio of the turret assembly rotations to bedroll rotations is 2o increased, fewer sheets of a given length will be wound on each core, while if the ratio is decreased, more sheets will be wound on each core. The sheet count per log can be changed while the turret assembly 200 is rotating, by changing the ratio of the turret assembly rotational speed to the ratio of bedroll rotational speed while turret assembly 200 is rotating.
2s In one embodiment according to the present invention, two or more mandrel winding speed schedules, or mandrel speed curves, can be stored in random access memory which is accessible to the programmable control system 5000. For instance, two or more mandrel speed curves can be stored in the common memory 6012 of the programmable mandrel drive control system 6000. Each of the 3o mandrel speed curves stored in the random .access memory can correspond to a different size log (different sheet count per log). Each mandrel speed curve can provide the mandrel winding speed as a function of the angular position of the turret assembly 200 for a particular sheet count per log. The web can be severed as a function of the desired sheet count per log by changing the timing of the ss activation of the chopoff solenoid.
In one embodiment, the sheet count per log can be changed while the turret assembly 200 is rotating by:
1) storing at least two mandrel speed curves in addressable memory, such as random access memory accessible to the programmable control system 5000;
40 2) providing a desired change in the sheet count per log via the operator interface;

3) selecting a mandrel speed curve from memory, based upon the desired change in the sheet count per log;
4) calculating a desired change in the ratio of the rotational speeds of the turret assembly 200 and the mandrel cupping assembly 400 to the rotational speed of the bedroll 59 as a function of the desired change in the sheet count per log;
l0 5) calculating a desired change in the ratios of the speeds of the core drive roller SOSA and mandrel support 610 driven by motor 510; the mandrel support 710 driven by motor 711; the glue nozzle rack actuator assembly 840 driven by motor 822; the core carrousel 1100 and core guide assembly 1500 driven by the motor 1222; the core loading conveyor 1300 driven by motor 1322; and the core is stripping apparatus 2000 driven by motor 2022; relative to the rotational speed of the bedroll 59 as a function of the desired change in the sheet count per log;
6) changing the electronic gear ratios of the turret assembly 200 and the mandrel cupping assembly 400 with respect to the bedroll 59 in order to change the ratio of the rotational speeds of the turret assembly 200 and the mandrel 2o cupping assembly 400 to the rotational speed of the bedroll 59;
7) changing the electronic gear ratios of the following components with respect to the bedroll 59 in order to change the speeds of the components relative to the bedroll 59: the core drive roller SOSA and mandrel support 610 driven by motor 510; the mandrel support 710 driven by motor 711; the glue nozzle rack 25 actuator assembly 840 driven by motor 822; the core carrousel 1100 and core guide assembly 1500 driven by the motor 1222; the core loading conveyor 1300 driven by motor 1322; and the core stripping apparatus 2000 driven by motor 2022 relative to the rotational speed of the bedroll 59; and 8) severing the web as a function of the desired change in the sheet count 3o per log, such as by varying the chopoff solenoid activation timing.
Each time the sheet count per log is changed, the position of the independently driven components can be re-phased with respect to the position of the bedroll within a log wind cycle by: determining an updated log wind cycle based upon the desired change in the sheet count per log; determining the 35 rotational position of the bedroll within the updated log wind cycle;
determining the actual position of a component relative to the rotational position of the bedroll within the updated log wind cycle; calculating the desired position of the _ component relative to the rotational position of the bedroll within the updated log wind cycle; calculating a position error for the component from the actual and 4o desired positions of the component relative to the rotational position of the bedroll within the updated log wind cycle; and reducing the calculated position error of the component.
While particular embodiments of the present invention have been illustrated and described, various changes and modifications can be made without departing to from the spirit and scope of the invention. For instance, the turret assembly central axis is shown extending horizontally in the figures, but it will be understood that the turret assembly axis 202 and the mandrels could be oriented in other directions, including but not Limited to vertically. It is intended to cover, in the appended claims, all such mod~cations and intended uses.
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Claims (12)

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A method of winding a continuous web of material into individual logs, the method comprising the steps of:
providing a rotatably driven turret assembly supporting a plurality of rotatably driven mandrels for winding the logs;
providing a rotatably driven bedroll for providing transfer of the continuous web of material to the rotatably driven turret assembly;
rotating the bedroll;
rotating the rotatably driven turret assembly, wherein rotation of the turret assembly is mechanically decoupled from rotation of the bedroll;
determining the actual position of the turret assembly;
determining a desired position of the rotatably driven turret assembly;
determining a turret assembly position error as a function of the actual and desired positions of the turret assembly; and reducing the position error of the turret assembly while rotating the rotatably driven turret assembly.
2. The method of Claim 1 wherein the steps of determining the desired and actual positions of the rotatably driven turret assembly comprise the steps of:
providing a position reference while rotating the turret assembly;
determining the desired position of the rotatably driven turret assembly relative to the position reference while rotating the turret assembly; and determining the actual position of the turret assembly relative to the position reference while rotating the turret assembly;
wherein the step of providing the position reference comprises calculating the position reference as a function of the angular position of the bedroll.
3. The method of Claim 1 wherein the steps of determining the desired and actual positions of the rotatably driven turret assembly comprise the steps of:

providing a position reference while rotating the turret assembly;
determining the desired position of the rotatably driven turret assembly relative to the position reference while rotating the turret assembly; and determining the actual position of the turret assembly relative to the position reference while rotating the turret assembly;

wherein the step of providing the position reference comprises calculating the position reference as a function of accumulated number of revolutions of the bedroll.
4. The method of Claim 1 wherein the steps of determining the desired and actual positions of the rotatably driven turret assembly comprise the steps of:

providing a position reference while rotating the turret assembly;

determining the desired position of the rotatably driven turret assembly relative to the position reference while rotating the turret assembly; and determining the actual position of the turret assembly relative to the position reference while rotating the turret assembly;

wherein the step of providing the position reference comprises calculating the position reference as the position of the bedroll within a log wind cycle.
5. The method of any one of Claims 1 to 4 wherein the step of rotating the rotatably driven turret assembly comprises the step of continuously rotating the turret assembly after reducing the position error of the turret assembly; and wherein the step of rotating the rotatably driven turret assembly comprises the step of rotating the turret assembly at a generally constant angular velocity after reducing the position error of the turret assembly.
6. A method of winding a continuous web of material into individual logs, the method comprising the steps of:
providing at least two independently driven components, the position of each independently driven component being mechanically decoupled from the positions of the other independently driven components, wherein at least one of the independently driven components comprises a rotatably driven turret assembly supporting a plurality of rotatably driven mandrels for winding the logs;
driving each of the independently driven components;
providing a common position reference;
determining the actual position of each independently driven component relative to the common position reference while driving the independently driven component;
determining the desired position of each independently driven component relative to the common position reference while driving the independently driven component;
determining a position error for each independently driven component as a function of the actual and desired positions of the independently driven component; and reducing the position error of each independently driven component while driving the component.
7. The method of Claim 6 wherein the step of providing at least two independently driven components comprises the step of providing an independently driven component for loading a core onto each of the mandrels.
8. The method of Claim 6 or 7 wherein the step of providing at least two independently driven components comprises the step of providing an independently driven component for removing wound logs from the mandrels.
9. The method of any one of Claims 6 to 8 further comprising the step of providing a rotatably driven bedroll for providing transfer of the continuous web of material to the rotatably driven turret assembly; and wherein the step of providing the common position reference comprises calculating they position reference as a function of the angular position of the bedroll.
10. The method of any one of Claims 6 to 8 further comprising the steps of providing a rotatably driven bedroll for providing transfer of the continuous web of material to the rotatably driven turret assembly; and wherein the step of providing the common position reference comprises calculating the position reference as a function of an accumulated number of revolutions of the bedroll.
11. The method of Claim 6 comprising the step of continuously rotating the rotatably driven turret assembly after reducing the position error of the turret assembly; and wherein the step of rotating the rotatably driven turret assembly comprises the step of rotating the turret assembly at a generally constant angular velocity after reducing the position error of the turret assembly.
12. A method of winding a continuous web of material onto hollow cores to form individual logs of the material, the method comprising the steps of:
providing a rotatably driven turret assembly supporting a plurality of rotatably driven mandrels for winding the web of material onto cores supported on the mandrels;
providing a rotatably driven bedroll for transferring the web of material to the rotatably driven turret assembly;
providing a driven core loading component for loading a core onto a mandrel;
providing a driven log removing component for removing a wound log from a mandrel;
rotating the bedroll;
rotating the turret assembly to carry the mandrels in a closed path, wherein rotation of the turret assembly is mechanically decoupled from rotation of the bedroll;
driving the core loading component to load a core onto a mandrel while the mandrel is moving, wherein motion of the core loading component is mechanically decoupled from rotation of the bedroll and the turret assembly;
transferring the web to the core;
rotating the mandrel to wind the web on the core to form a log supported on the mandrel;
driving the log removing component to remove the log from the mandrel while the mandrel is moving, wherein motion of the log removing component is mechanically decoupled from rotation of the bedroll and rotation of the turret assembly;
providing a common position reference;
determining the desired position of each of the turret assembly, core loading component, and log removing component relative to the common position reference while rotating the turret assembly;
determining the actual position of each of the turret assembly, core loading component, and log removing component relative to the common position reference;
determining a position error for each of the turret assembly, core loading component, and log removing component as a function of their respective actual and desired positions; and reducing the position error associated with each of the turret assembly, core loading component, and log removing component while rotating the turret assembly.
CA002222901A 1995-06-02 1996-05-22 Method of controlling a turret winder Expired - Fee Related CA2222901C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US45877895A 1995-06-02 1995-06-02
US08/458,778 1995-06-02
PCT/US1996/007461 WO1996038363A1 (en) 1995-06-02 1996-05-22 Method of controlling a turret winder

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CA2222901A1 CA2222901A1 (en) 1996-12-05
CA2222901C true CA2222901C (en) 2002-12-03

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CN1071276C (en) 2001-09-19
WO1996038363A1 (en) 1996-12-05
EP0833794B1 (en) 2000-08-02
PT833794E (en) 2001-01-31
KR19990022238A (en) 1999-03-25
DK0833794T3 (en) 2000-09-04
HUP9901641A3 (en) 2002-03-28
CZ383797A3 (en) 1998-07-15
CO4440528A1 (en) 1997-05-07
ES2149486T3 (en) 2000-11-01
ATE195106T1 (en) 2000-08-15
NO975550L (en) 1998-02-02
AU723336B2 (en) 2000-08-24
MX9709408A (en) 1998-07-31
DE69609612T2 (en) 2001-04-12
NO975550D0 (en) 1997-12-02
HK1009793A1 (en) 1999-06-11
GR3034119T3 (en) 2000-11-30
US6354530B1 (en) 2002-03-12
JP3238709B2 (en) 2001-12-17
EG21468A (en) 2001-11-28
AR002165A1 (en) 1998-01-07
HUP9901641A2 (en) 1999-09-28
PE29899A1 (en) 1999-04-10
ZA964516B (en) 1996-12-09
TW316891B (en) 1997-10-01
JPH11506088A (en) 1999-06-02
CA2222901A1 (en) 1996-12-05
BR9609373A (en) 1999-05-18
CN1190941A (en) 1998-08-19
EP0833794A1 (en) 1998-04-08
DE69609612D1 (en) 2000-09-07
AU5872296A (en) 1996-12-18

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