US3784119A

US3784119A - Apparatus for fastening yarn winding tails

Info

Publication number: US3784119A
Application number: US00228042A
Authority: US
Inventors: S Kenworthy; M Hall
Original assignee: Individual
Current assignee: Cezoma International
Priority date: 1972-02-22
Filing date: 1972-02-22
Publication date: 1974-01-08
Anticipated expiration: 1991-01-08

Abstract

In the formation of a winding of yarn wherein a tail is left on the winding, a method and apparatus for releaseably fastening the tail which involves placing a bead of adhesive over the tail on the winding and causing the adhesive to set.

Description

United States Patent [191 Kenworthy et a1.

APPARATUS FOR FASTENING YARN WINDING TAILS Inventors: Samuel P. Kenworthy, Phoenixville,

Pa.; Marcus A. Hall, Branford, Conn.

Assignees: Frederic S. Claghorn, Chester Hill;

John H. DeWitt, Huntington Valley; d/b/a Cezoma International, Royersford, Pa.

Filed: Feb. 22, 1972 Appl. No.: 228,042

[ Jan. 8, 1974 [56] References Cited UNITED STATES PATENTS 1,865,075 6/1932 Baker 242/21 X 1,909,181 5/1933 Johnson 242/35.5 R 2,163,578 6/1939 Baker et 31.... 242/35.5 R 2,800,290 7/1957 Hess 242/165 2,815,178 12/1957 Cone i. 242/19 X 2,986,352 5/1961 Dumbauld 242/35.5 R 3,693,906 9/1972 Robinson 242/159 Primary Examiner-Stan1ey N. Gilreath Att0rneyCharles J. Brown [5 7] ABSTRACT In the formation of a winding of yarn wherein a tail is left on the winding, a method and apparatus for re- Ieaseably fastening the tail which involves placing a bead of adhesive over the tail on the winding and causing the adhesive to set.

7 Claims, 12 Drawing Figures PAIENIEDJAN 8I974 SHEET 2 0F 8 PATENTEI] JAN 8 I974 SHEET 3 0F 8 PATENTEI] JAN 8 I974 sum u (If a PATENTED JAN 8 4 sum 5 BF 5 PATENTEB JAN 8 I974 SHEET 5 [IF 8 PATENTED JAN 81974 SHEET 7 BF 8 PATENTED JAN 8 74 SHEET 8 OF 8 This invention relates to the fastening of what is known as a tail or end section of yarn on a winding and,

more particularly, to apparatus and a method for achieving such fastening by placing a bead of adhesive over the tail on the winding and to the resulting winding with the tail releaseably fastened thereon.

When bobbins or spools of yarn or other strands are wound commercially, it is necessary to secure the end of the yarn trailing from the last applied turn so that the yarn does not unravel during or after packaging. This trailing end is referred to as the tail of the winding. It has been the practice in winding bobbins of thread to tuck the tail under one of the previously applied turns to hold it in place. Even when bobbins are wound on otherwise fully automatic winding equipment, the practice in the industry has often been to hire personnel to do this tucking of the tail by hand. This particular operation has long been recognized as perhaps the most inefficient step in the entire process of winding bobbins of thread. Automatic tucking devices have recently been made available to eliminate the manual operation but they result in a high percentage of rejects and in addition they are complicated devices lacking in versatility.

The problem of how to secure the tail of a winding arises not only with respect to bobbins of thread but also in the winding of many other kinds of non-metallic and even metallic filaments. While reference is made herein to strands of yarn, it is to be understood that many other filamentary materials are also contemplated. The present invention has particular application, however. to the fastening of winding tails in automatic yarn winding machines which produce one or more windings on each of a plurality of cores simultaneously.

SUMMARY OF THE INVENTION In broad terms, the invention is applicable to yarn winding apparatus wherein a core is rotated at a first station to form a winding of yarn thereon. Gripping means carries the winding to a second station in such apparatus, and a cutter severs the yarn between the stations to leave a tail on the winding. Automatic tail fastening means are provided in apparatus of this sort comprising yarn holding means for locating the tail in a given position on the winding at the second station. An adhesive ejector is displaceable adjacent the second station, and it includes a nozzle out of which a bead of adhesive can be ejected Indexing means are included for aiming the nozzle of the ejector where the tail is held on the winding. The ejector is actuatable to eject a bead of adhesive from the nozzle unto the winding over the tail to fasten the tail in place when the adhesive sets. Means are also included for opening the gripping means to release the winding after the adhesive bead sets and for returning the gripping means to the first station.

The invention also provides a method applicable to the formation of a winding of yarn wherein a tail is left on the winding. The method is for releaseably fastening the tail and it comprises holding the tail in a given position on the winding, placing a bead of adhesive over the tail on the winding, and setting the adhesive to fasten the tail in place.

A product is also provided by the invention, namely a winding of yarn having an end tail and means for releaseably fastening the tail in place comprising a bead of adhesive located over the tail on the winding.

DESCRIPTION OF PREFERRED EMBODIMENT A preferred embodiment of the apparatus, method and product of the invention is described herein below with reference to the accompanying drawings, wherein FIG. 1 is a fragmentary plan view partly broken away of the spindle area of an automatic bobbin winding machine;

FIG. 2 is a vertical section taken along the line 2-2 of FIG. 1 and showing certain operations at a first station of the apparatus;

FIG. 3 is a vertical section similar to that of FIG. 2 but taken along the line 3-3 of FIG. 1 and showing certain operations at a second station of the apparatus;

FIG. 4 is a vertical section similar to that of FIG. 2 showing further operations at the second station of the apparatus;

FIG. 5 is a vertical section similar to that of FIG. 2 showing still more operations at the second station of the apparatus;

FIG. 6 is an enlarged fragmentary section taken along line line 66 of FIG. 3;

FIG. 7 is an enlarged fragmentary section taken along the line 7--7 of FIG. 3;

FIG. 8 is an enlarged fragmentary section taken along the line 8-8 of FIG. 6;

FIG. 9 is an enlarged section taken along line 9-9 of FIG. 3;

FIG. 10 is a perspective view of a core and multiple winding with the tail fastened in place as produced by the apparatus of FIGS. 1 to 10;

FIG. 11 is an exploded perspective view of a completed bobbin including a winding as illustrated in FIG. 10.

FIG. 12 is a section taken along the line l2-12 of FIG. 6.

machine to which the invention principally relates is illustrated in the drawings since the remaining structure and function characteristic of such machines are well known. Some of the standard elements of an automatic winding machine not shown are the supply packages of yarn, the tension-controlling means for maintaining the desired tension in the yarn strands, as they are directed to the spindles, the magazine holding a supply of cores about which the bobbins are to be wound, the associated means for placing those cores on the spindles, and the hopper into which the completed bobbins are discharged. In addition, no detailed description is given herein of the various drive means, controls and the like which permit the apparatus of the invention to operate in a fully automatic manner. Automatic winding machines of the type contemplated are manufactured, for example, by Cezoma Testielmachinefabrieken N.V.,

Uden, Holland substantially as shown in their brochures 66-04-04 and 71-04-01 and particularly their type EK-A4N-3 machine.

Referring first to FIGS. 1 through 5, the machine includes a frame 20 on which are rotatably mounted four spindle drive shafts, 21, 22, 23 and 24. These shafts are horizontal and parallel to one another and are driven by suitable drive means. The shafts each have a drive head mounted thereon, drive heads and 26 for

drive shafts

21 and 22 respectively being illustrated in FIG. 1. Each of these drive heads is paired with a coaxial tailstook and spindle which are not only rotatable but also translatable in and out with respect to the drive head. A tailstock 27 and its spindle 29 are associated with the head 25 and tailstock 28 and its spindle 30 are associated with the head 26, all of which is visible in FIG. 1. Only

spindles

31 and 32 are shown in connection with the

drive shafts

23 and 24 respectively. The four drive heads hold respective drive spindles 29a to 32a which are coaxial with and opposed to the associated tailstock spindles 29 to 32.

As shown in FIGS. 3 and 4 particularly, the drive spindle 29a is formed with a nose 33 defining a shoulder on which notches 34 are inscribed. A nose 35 is also formed on the opposite tailstock spindle 29. These features are also present on each pair of drive and tailstock spindles. By well known means not shown in the drawings, four paperboard tubes known as cores 36-39 (see FIG. 1) are carried from a nearby supply magazine by means of a slide and brought into position coaxially between the respective pairs of spindles 29 -29a, 30-30a, 31-3la and 32-32a when the tailstock spindles 29-32 are retracted. The tailstock spindles 2932 are then translated axially toward their associated drive spindles 29a-32a (upwardly as shown in FIG. 1 and to the left as shown in FIGS. 3 and 4) to grip the cores 3639 in place as shown in FIG. I. These functions and mechanisms are well known in the art.

Referring to FIG. 1, guide eye assemblies are shown for properly directing strands of yarn from a supply source onto the cores to be wound into windings. All four pairs of spindles are provided with the same guide eye assemblies though not all are visible in the drawings. In FIG. 1, guide eye assemblies 40 and 41 are shown in association with spindles 31-3Ia and 32-32a respectively. In FIG. 2, a guide eye assembly 42 is shown in association with the spindle 2929a. Each quide eye assembly includes three ceramic eyelets through which three respective strands of the yarn are carried onto the associated core. In FIG. 2,

strands

43a, 43b and 430 are shown being directed unto the core 36 to form three windings on the one core. In this embodiment of the apparatus, three such windings are formed on each of the four cores 36-39. v

The guide eye assemblies are mounted in pairs on two

guide eye shafts

45 and 46. The guide eye assemblies 40 and 41 (see FIG. I) are hinged on

traverse shafts

45 and 46 which are traversed by the usual cam mechanism well known to the art. The guide eye assemblies can be lifted by means of an air cylinder 47 which acts through a lever 48 to rotate a shaft 49. Pairs of arms 50-5011 and 51-5111 are fastened to an extend from the shaft 49 so that upon rotation of the shaft 49 the pairs of arms move in an upwardly directing lifting the guide eye assemblies up from or down toward their associated cores.

Mounted on the frame 20 of the machine is a crank arm 52 connected at one end to a carriage 53 designed to move in and out with respect to the drive spindles when the arm 52 is operated back and fourth. The carriage 53 supports four Y-shaped thread forks associated with the respective pairs of spindles. The

tread forks

54 and 55 are both visible in FIG. 1 associated with the respective spindles 29-29a and 30-30a. By

means of the crank arm 52 and carriage 53, these thread forks can be moved between a retracted position as shown in FIGS. 1, 2 and 5 and an advanced position as shown in FIGS. 3 and 4. In the advanced position, the thread forks pick up the three strands of yarn associated with each pair of spindles and pull the three strands together adjacent the associated drive spindle for reasons described hereinafter. The drive means and linkage for operating the crank 52 and the associated thread forks is well known in the art and is therefore not shown in the drawings.

Also included are a pair of

thread arms

56 and 57 which swing on the frame 20 about

respective pins

56a and 570 all as shown in FIG. 1. The arm 56 an be pivoted 90 from its withdrawn position shown in FIG. 1 counterclockwise under the spindle 29-2911 and 3030a to the closed position shown in FIGS. 4 and 5 The movement of the arm 57 is in clockwise direction under the spindles 31-31a and 32-32a in much the same manner. When the thread arms are moved in this fashion, they engage the two associated sets of three strands and pull them in under the drive spindles into a cutting device, one of which is shown in FIGS. 2 to 5 as cutter 58. The structure and function of such means for severing the sets of three strands are also known and are not therefore shown and described herein in further detail.

Adjacent each of the respective drive spindles 29a32a are air jets designed to direct a blast of air toward the threads after they have been severed by the cutting devices 58. Air jets 60 and 60a are shown in FIG. 1 associated with spindles 29-29a respectively, and the air jet 60 is also visible in FIGS. 2 to 5.

Pivotally mounted on the frame 20 of the machine is a shaft 61 which carries two arms 62 and 62A (see FIG. 6) which in turn support a flat plate 63. An air cylinder 64 is linked between the arm 62 and a plate 65 fixed to the frame 20 of the machine to move the plate 63 between its uppermost position as shown in FIG. 2 and its lowermost position as shown in FIG. 3. The uppermost and lowermost positions of FIGS. 2 and 3 are determined by

stops

66 and 66a respectively on the plate 65 of the machine which engage surfaces 67 and 67a respectively fixed with respect to the plate 63. Between these extreme upper and lower positions, the plate 63 can be indexed with some precision by a second air cylinder 69 having a piston rod 70 adapted to engage the surface 67a and move the arm 62 counterclockwise as shown in FIG. 4.

Referring particularly to FIGS. 6 and 8 and also to FIGS. 4 through 5, it will be seen that an air cylinder 72 is supported by the plate 63. A piston rod 73 of the air cylinder is linked to a pin 74 extending from a block 75. As shown in FIG. 8, the pin 74 also extends from the side of the block 75 opposite the piston rod 73, and has mounted on that opposite extension a first pair of spacers 76 which are designed to move freely back and forth in a slot 77 formed in a slide 78. Beyond the spacers 76, the shaft 74 extends through a close fitting hole 80 in a second slide 81 which is disposed between the first slide 78 and the plate 63. Beyond the second slide 81, the pin 74 carries another pair of spacers 82 which are adapted to move freely back and forth in a slot 83 formed in the plate 63.

A block 84 on the first slide 78 carries a gripper support 86. Ablock 87 on the second slide 81 carries a gripper support 88. The gripper supports 86 and 88 are associated with the spindles 29-29a. In like manner, a block 89 on the first slide 78 supports a gripper support 90 and a block 91 on the second slide 81 supports a gripper support 92. The gripper supports 90 and 92 are associated with the

spindles

30 and 30a. As shown in FIG. 6 another set of blocks and gripper supports similarly mounted on the slides and associated with the spindles 31 and 31a and a fourth set of blocks and gripper supports is likewise located with respect to the

spindles

32 and 32a.

The apparatus associated with each of the four pairs of blocks 8487 etc. and gripper supports 86-88 etc. can be described with respect to the first pair, i.e. that associated with the pair of spindles 29-29a. As shown in FIGS. 6 and 12 in relation to the

spindles

29 and 29a, the typical mount 94 is rotatably supported on a bolt 95 fixed to the plate 63. Extending from the mount 94 is a rod 96 which projects through an eyelet 97 secured to the second slide 81. AT it upper end, the rod 96 is configured in the manner shown in FIG. 7 to support three

thread centralizing fingers

98, 99 and 100 (see also FIG. 2).

A link 102 is provided as shown in FIG. 6 to connect to the first slide 78 by pin 103 at its lower end and to the second slide 81 by a pin 104 at its upper end. The center of the link 102 is pivotly connected to the plate 63 by a third pin S equidistant from the pins 103 and 104.

When the air cylinder 72 is operated so that its piston rod 73 is moved to the left to the position shown in FIG.

6, the spacer 76 simply moves freely within the slot 77 in the first slide 78. However, because the pin 74 is closely fitted in the hole 80 in the second slide 81, the second slide 81 is thereby carried to the left as shown in FIG. 6. The other end of the pin 74 carrying the roller 82 merely moves within the slot 83 in the plate 63. As the second plate 81 moves to the left, the link 102 is turned counterclockwise, thus causing the first slide 78 to move a corresponding distance to the right as shown in FIG. 6. Because the

slides

78 and 81 move in equal and opposite directions, the respective pairs of gripper supports are also caused to move in equal and opposite directions. The gripper support 86 connected by the block 84 to the first slide 78 moves to the right. The gripper support 88 connected by the block 87 to the second slide 81 moves to the left. As a consequence, the gripper supports close with respect to one another. In doing so, the eyelet 97 on the second slide 81 moves to the left as shown in FIG. 6 and causes the rod 96 with its thread centralizing fingers 98-100 to move to the left to pull the set of three threads over to the left as shown in FIG. 6.

Bobbin grippers are located on the extremities of the gripper supports. As shown in FIG. 6 with respect to the spindles 29-29a, the gripper supports 86 and 88 carry corresponding

bobbin grippers

107 and 108. These grippers are designed to clasp the set of three windings on a single core as shown in FIG. .7. The left gripper 107 supports an electrical wire 110 which comes in contact with the three associated strands when the centralizing fingers 98100 move those strands to the position shown in FIGS. 6 and 8. By suitable circuitry, eleetric current can be passed through the wire 110 at the point in the cycle of operation when it is desired to sever the strands from their windings and the respective tails.

Also supported by the plate 63 and moveable therewith is a suction horn associated with each of the four spindles. Referring particularly to FIGS. 4 and 5, the suction horn 112 is supported on a bracket which in turn is mounted on the plate 63. The suction horn 112 has a mouth which is positioned such that the associated set of three strands is laid across it in a manner described hereinafter.

Turning now to FIGS. 3 and 9, a shaft 113 on the plate 65 supports a plate 114. Angular adjustments of position of the plate 114 can be made by turning a small adjustment cam 115 located on a pin 116. The plate 114 supports a cam motor 118 which by

gears

119 and 120 is designed to rotate three

coaxial cams

121, 122 and 123. As shown in FIG. 9, the

cams

122 and 123 are designed to operate microswitches 124 and 125 respectively. The cam 121 is a lift cam which turns through successive positions shown in FIGS. 2 through 5 respectively.

Mounted about a shaft 127 on the frame 20 of the machine are a pair of support blocks 128 and 129 shown most clearly in FIG. 9. The support blocks 128 and 129 carry

rods

130 and 131 respectively by adjustable spring-mounted screw connections illustrated in FIG. 9 which permit the

rods

130 and 131 to be moved in and out to various positions. The other ends of the

rods

130 and 131 carry a frame 132 on which are mounted four adhesive ejector nozzles 134 to 137 associated with the respective spindles 129-129a through 132-132a. Electrical lead 138 to 141 extend to the respective nozzles to maintain at the proper temperature an adhesive composition which is ejected out of those nozzles. Suitable means are also provided for delivering a supply of hot flowable adhesive to-these nozzles and for squirting beads of adhesive from the nozzles on signal. Such guns are well known to the art.

The operation of this automatic bobbin winding machine will be described beginning at the point in its cycle where cores 36-39 are mounted on the respective spindles and are rotating so that the three strands of thread are pulled downwardly through the respective guide eye assemblies to form three windings on each core. Referring first to FIG. 2, the air cylinder 64 is in an extended position so that the

grippers

107 and 108 are disposed at what can be called a first station to each side of the three windings on the core 36. These three windings are motionless at this point and fully formed with their last wrap in approximately the middle of the traverse. The air cylinder 72 is then automatically operated to cause its piston rod 73 to move to the extreme left position as shown in FIG. 6, as a result of which the first slide 78 is moved to the right and the second slides 81 is moved to the left as shown. This causes the

grippers

107 and 108 to close about the three windings on the core 36. The spindles 29-32 are then withdrawn to the right from the position shown in FIG. 2 to the position shown in FIG. 3. The air cylinder 64 is then actuated to lower the grippers from the first station shown in FIG. 2 to a second station as shown in FIG. 3. The thread forks 54 move from their retracted position shown in FIG. 2 to their advanced position shown in FIG. 3 at this point. The

thread arms

56 and 57 are then turned about their respective pins 56a and 57a to direct the strands of yarn into operative engagement with the cutting device 58. This movement of the thread arms is from the position shown in FIG. 3 to that shown in FIG. 4.

The following operations are described in relation to the windings found on the spindles 29-29A, but the operations are the same on the other four windings as well. At this point with the

grippers

107 and 108 closed, the thread centralizing fingers are in the FIG. 7 position and insure that the strands lie across the mouth of the suction horn l 12 and directly against the grooves 34 adjacent to the nose 33 on the drive spindle 29 where the strands can readily be trapped by the next core when it is pushed into place on the spindles. The cylinder 69 is then operated so that it moves the arm 62 from the position shown in FIG. 3 to that shown in FIG. 4. This causes the strands between the forks 54 and the grippers to be slackened allowing the suction tube 1 12 to pull in a small loop of the strands as shown in FIG. 4 and hold the strands tight. The cutting device 58 is then operated to sever the strands just above the arm 56. It is at this time that the guide eye assemblies lower into position adjacent the next core which by then is in place on the spindles and the spindles begin to turn. The thread fork 54 is also moved from its advances to its retracted position at the same time the guide eye assemblies are lowered. The lower cut end is immediately sucked into the vacuum tubeto hold the tail of the strands tight. The upper ends are blown by the jet 60 alongside the next core on the spindles, which at that point is mounted in place and rotating, so that those ends are wrapped under the next windings. The fingers 98 to 100 are still engaging the yarn tails at this point and hold them closely against the electrical wire 110. This condition of the apparatus is shown in FIG 5.

The thread arm 56 swings back to its starting position shown in FIG. 1 as the adhesive application cycle begihs. During this cycle the lift cam 121 raises the nozzles from the position shown in FIG. 3 to that shown in FIG. 4 where the nozzle 134 is correctly aimed at the lowermost winding on the core. The cam 122 operates the micro switch 124 at this point causing a bead of adhesive to be ejected out of the nozzle 134, carry across the space separating the nozzle tip from the surface of the winding, and impinge on that surface just above the point where the tail of that winding is located.

The axis of the windings is substantially vertical at this time. Because of the particular nature of the adhesive composition which will be described hereinafter, the applied bead sags or gravitates very slightly down across the surface of the winding to set when it is located directly over the tail. The tail is thereby fastened firmly in place. After the first adhesive dot is applied, the lift cam 121 raises the nozzles to a second position where a head is similarly applied to the middle winding of the core. Finally, after that is completed, the lift cam 121 raises the nozzles to a third position (as shown in FIG. 5) where a head of adhesive is ejected onto the last of the three windings on the core. There is still another lobe on the lift cam 121 which raises the nozzles slightly above the last bead application position to break any adhesive that may string out between the nozzles and the last winding.

The cam 123 operates the switch 125 during this stage of the cycle to start a timer for the trimming of the tails by means of the hot wire 110. This timer is set to turn on the current momentarily so that the hot wire 1 burns through the tails and severs them. The removed sections of the strands are immediately sucked into the horn 112. Trimming of the strand tails in this manner takes place at a point after the adhesive has set.

A new set of three windings is in the process of being formed on another core all the while the grippers are carrying out these operations at the second station. The spindles are then halted with the traverse of the guide eye assemblies stopped at a point where the last wrap is approximately centered in the middle of the traverse. The guide eye assemblies are then lifted upwardly from their associated completed windings by the arms 50-50a and 51-51a.

At this point, the cylinder 72 is operated to pull its piston rod 73 to the right as shown in FIG. 6 and thereby open the grippers to release the fully formed windings so that they drop into a suitable discharge hopper. The thread centralizing fingers 98-100 are moved to a withdrawn position at the same time. The air cylinder 64 is then operated to lift the grippers back to the FIG. 2 first station position. The next set of three windings on a core is ready at this point so that the grippers may close about them and repeat the entire cycle.

As the product emerges directly from the automatic winding machine, it consists of a core on which three windings 151 to 153 are supported as shown in FIG. 10. The windings have end tails 154 to 156 respectively releaseably held in place by beads of adhesive 157 to 159 located over the tails on the windings. To be formed into finished bobbins, the core 150 is cut in two places between adjoining pairs of windings and then fitted within flanges 160 and 161 as shown in FIG. I l.

The adhesive to be used for the tail fastening bead in accordance with this invention is preferably of thermoplastic material. A standard carton sealing adhesive such as Swift 625 manufactured by the Swift Chemical Company, a division of Swift & Company, Oak Brook, III., is especially suitable. It is advantageous to add to such an adhesive approximately three percent by weight of a silicon dioxide thickener such as Cab-O-Sil, a trademark of the Cabot Corporation, Boston, Massachusetts. It is also advantageous to add to each pound of the basic adhesive two cubic centimeter of a wetting agent such as Triton, a trademark of the Rohm and Haas Company of Philadelphia, Penna. The complete adhesive composition is chosen to be readily applied by an ejector nozzle and to set quickly after a bead of it gravitates downwardly a predetermined amount subsequent to application to a vertical surface. The material of the adhesive may also be paraffin or the like though that is considerably more difficult to control in flow and setting properties.

We claim:

1. In yarn winding apparatus wherein a core is rotated between a drive head and coaxial tailstock mounted for rotation and relative translation on a frame to form on the core a winding of yarn with a tail extending from the winding; automatic tail fastening means comprising a. yarn holding means for locating the tail in a given position on the winding;

b. an adhesive ejector including a nozzle out of which a bead of adhesive can be ejected;

c. means for aiming the nozzle of the ejector where the tail is held on the winding; and Y d. said ejector being actuatable to eject a bead of adhesive from the nozzle onto the winding over the tail to fasten the tail in place when the adhesive sets.

2. ln yarn winding apparatus wherein a core is rotated between a drive head and coaxial tail stock mounted for ratation and relative translation on a frame to form on the core a winding of yarn with a tail extending from the winding; gripping means carries the winding to a second station; and the yarn is severed between the stations to leave a tail on the winding; automatic tail fastening means comprising a. yarn holding means for locating the tail in a given position on the winding at the second station;

b. an adhesive ejector displaceable adjacent the second station and including,

i. a nozzle out of which a bead of adhesive can be ejected;

c. indexing means for aiming the nozzle of the ejector where the tail is held on the winding;

d. said ejector being actuatable to eject a head of adhesive from the nozzle unto the winding over the tail to fasten the tail in place when the adhesive sets; and

e. means for opening the gripping means to release the winding after the adhesive bead sets for returning the gripping means to the first station.

3. Yarn winding apparatus according to claim 2 wherein the axis of the winding is substantially vertical when the bead of adhesive is applied and the bead gravitates downwardly over the tail before it sets.

4. Yarn winding apparatus according to claim 2 wherein the yarn holding means comprises a suction horn positioned adjacent the yarn and centralizing finger means for drawing the tail into said given position on the winding at the second station.

5. Yarn winding apparatus according to claim 2 which includes an electrical hot wire trimmer engaging the tail as it is held by the yarn holding means, said trimmer being adapted to trim off the tail adjacent the bead.

6. ln yarn winding apparatus wherein a core is rotated between a drive head and coaxial tail stock mounted for rotation and relative translation on a frame at a first station to form on the core at least one winding from an individual strand of yarn; gripping means carry the winding and core to a second station; and the yarn strands are severed from the winding to leave a tail extending from each winding; automatic tail fastening means comprising a. a suction horn positioned adjacent the yarn strand at the second station;

b. means for displacing the gripping means to slacken the yarn strands and permit a section thereof to be drawn into the suction horn before the strand is severed,

i. said suction horn holding the tails taut after severance of the strands;

c. centralizing finger means for holding the taut strands in a given position on the winding;

d. an adhesive ejector displaceable adjacent the second station and including i. a nozzle out of which a bead of adhesive can be ejected;

e. indexing means for selectively aiming the nozzle of the ejector just above the point where the tail is held on the winding;

f. said ejector being actuable to eject a head of adhesive from the nozzle unto the winding above the tail so that the bead gravitates downwardly to cover the tail when it has set and thereby fasten the tail in place;

g. an electrical hot wire trimmer engaging the tail as it is held taut by the suction horn and adapted to trim off the tails adjacent the respective beads,

i. the trimmed yarn being drawn into said suction horn; and

h. means for opening the gripping means to release the core and winding after the adhesive head has set and for returning the gripping means to the first station.

7. In yarn winding apparatus wherein a core is rotated between a drive head and coaxial tail stock mounted for rotation and relative translation on a frame at a first station to form on the core a plurality of axially spaced windings from individual strands of yarn; gripping means carry the windings and core to a second station; and the yarn strands are severed from the windings to leave respective tails extending from the windings; automatic tail fastening means comprising ,a. a suction horn positioned adjacent the yarn strands at the second station;

b. means for displacing the gripping means to slacken the yarn strands and permit a section thereof to be drawn into the suction horn before the strands are severed,

i. said suction horn holding the tails taut after severance of the strands;

c. movable centralizing fingers for holding the taut strands in a given position on the windings;

d. an adhesive ejector displaceable adjacent the second station and including i. a nozzle out of which successive beads of adhesive can be ejected;

e. indexing means for successively aiming the nozzle of the ejector just above where the respective tails are held on the windings;

f. said ejector being successively actuatable to eject beads of adhesive from the nozzle unto the respective windings above the respective tails so that each bead gravitates downwardly to cover the associated tail when it has set and thereby fasten the tail in place;

g. an electrical hot wire trimmer engaging the tails as they are held taut by the suction horn and adapted to trim off the tails adjacent the respective beads, i. the trimmed yarn being drawn into said suction horn; and

h. means for opening the gripping means to release the core and windings after the adhesive beads have set and for returning the gripping means to the first station.

Claims

1. In yarn winding apparatus wherein a core is rotated between a drive head and coaxial tailstock mounted for rotation and relative translation on a frame to form on the core a winding of yarn with a tail extending from the winding; automatic tail fastening means comprising a. yarn holding means for locating the tail in a given position on the winding; b. an adhesive ejector including a nozzle out of which a bead of adhesive can be ejected; c. means for aiming the nozzle of the ejector where the tail is held on the winding; and d. said ejector being actuatable to eject a bead of adhesive from the nozzle onto the winding over the tail to fasten the tail in place when the adhesive sets.

2. In yarn winding apparatus wherein a core is rotated between a drive head and coaxial tail stock mounted for ratation and relative translation on a frame to form on the core a winding of yarn with a tail extending from the winding; gripping means carries the winding to a second station; and the yarn is severed between the stations to leave a tail on the winding; automatic tail fastening means comprising a. yarn holding means for locating the tail in a given position on the winding at the second station; b. an adhesive ejector displaceable adjacent the second station and including, i. a nozzle out of which a bead of adhesive can be ejected; c. indexing means for aiming the nozzle of the ejector where the tail is held on the winding; d. said ejector being actuatable to eject a bead of adhesive from the nozzle unto the winding over the tail to fasten the tail in place when the adhesive sets; and e. means for opening the gripping means to release the winding after the adhesive bead sets for returning the gripping means to the first station.

6. In yarn winding apparatus wherein a core is rotated between a drive head and coaxial tail stock mounted for rotation and relative translation on a frame at a first station to form on the core at least one winding from an individual strand of yarn; gripping means carry the winding and core to a second station; and the yarn strands are severed from the winding to leave a tail extending from each winding; automatic tail fastening means comprising a. a suction horn positioned adjacent the yarn strand at the second station; b. means for displacing the gripping means to slacken the yarn strands and permit a section thereof to be drawn into the suction horn before the strand is severed, i. said suction horn holding the tails taut after severance of the strands; c. centralizing finger means for holding the taut strands in a given position on the winding; d. an adhesive ejector displaceable adjacent the second station and including i. a nozzle out of which a bead of adhesive can be ejected; e. indexing means for selectively aiming the nozzle of the ejector just above the point where the tail is held on the winding; f. said ejector being actuable to eject a bead of adhesive from the nozzle unto the winding above the tail so that the bead gravitates downwardly to cover the tail when it has set and thereby fasten the tail iN place; g. an electrical hot wire trimmer engaging the tail as it is held taut by the suction horn and adapted to trim off the tails adjacent the respective beads, i. the trimmed yarn being drawn into said suction horn; and h. means for opening the gripping means to release the core and winding after the adhesive bead has set and for returning the gripping means to the first station.

7. In yarn winding apparatus wherein a core is rotated between a drive head and coaxial tail stock mounted for rotation and relative translation on a frame at a first station to form on the core a plurality of axially spaced windings from individual strands of yarn; gripping means carry the windings and core to a second station; and the yarn strands are severed from the windings to leave respective tails extending from the windings; automatic tail fastening means comprising a. a suction horn positioned adjacent the yarn strands at the second station; b. means for displacing the gripping means to slacken the yarn strands and permit a section thereof to be drawn into the suction horn before the strands are severed, i. said suction horn holding the tails taut after severance of the strands; c. movable centralizing fingers for holding the taut strands in a given position on the windings; d. an adhesive ejector displaceable adjacent the second station and including i. a nozzle out of which successive beads of adhesive can be ejected; e. indexing means for successively aiming the nozzle of the ejector just above where the respective tails are held on the windings; f. said ejector being successively actuatable to eject beads of adhesive from the nozzle unto the respective windings above the respective tails so that each bead gravitates downwardly to cover the associated tail when it has set and thereby fasten the tail in place; g. an electrical hot wire trimmer engaging the tails as they are held taut by the suction horn and adapted to trim off the tails adjacent the respective beads, i. the trimmed yarn being drawn into said suction horn; and h. means for opening the gripping means to release the core and windings after the adhesive beads have set and for returning the gripping means to the first station.