US2037823A - Extruding machine - Google Patents

Description

v.` n RoYLE '2,037,823

EXTRULNG MACHINE Filed Feb. 18, 1952 April 21, 1936.

3 Sheets-Sheet 1 2l, V' ROYLE EXTRUDING MACHINE 3 Sheets-Sheet 2 Filed Feb. 1s, 1932 INVENToR 'y BY ATroRNn-:Ys

Patented Apr. 21, 1936 Ex'raUnmG MACHINE Vernon Boyle, Paterson, N. J. Application February 1s, 1932, serial No. 593,698

9 Claims.

'Ihis invention relates to an improvement in heads for extruding machines.

It has for an object to provide a device of this character which is so constructed that the parts forming the head may be separated transversely without disassembling the parts as a unit, for purposes of cleaning or replacing parts of the same, and quickly and easily returning' them to operative position.

Another object consists in providing a device of this character in which the head is formed of two members hinged together so that one member may be swung outwardly away from the fixed member, thereby exposing the interior of the head.

Another object consists in providing a device of this character having a relatively thin strainer plate disposed in position on the movable member and reinforced by the member to resist any undue strain or irregularity in operation.

Another object consists in providing a device of this character having means rotatably mounted on the movable member for cutting the material transversely, when so desired, after it named and other objects may eiectively be at-` tained. k

Machines of this character are so designed t operate on rubber compounds, including various substances, during the process of reclaiming the rubber; and these compounds and substances vary greatly in character and consistency. Consequently, it has been found that strainer heads heretofore in use have to be repeatedly taken away to be cleaned and again assembled before the machine can again be set in operation, which disassemblage and assemblage consumes a conn siderableamount of time and labor in handling the parts. My invention is designed to overcome these disadvantages and thereby enhance the capacity of the output of the machine, as well as embody advantages inherent in the construction.

A practical embodiment of my invention is represented in the accompanying drawings, in which Fig. 1 represents a plan view of the strainer head secured to the cylinder, the latter being broken away, and certain movable elements of the head being shown in diiferent positions in dotted outline. 'f

Fig. 2 represents a front elevation of the same.

Fig. 3 represents a vertical section taken in the,

plane of the line III- III of Fig. 2,1ooking in the (Cl. 14S-174) direction of the arrows, certain of the elements being shown in another position in dotted outline. Fig'. 4 represents a front' elevation of the strainer head, showing modif-led form of means for transversely cutting the material passed from the head and mechanism for actuating the same, and Fig, represents a horizontal section taken in the plane of the line V--V of Fig. 4, looking in the direction of the arrows.

The cylinder of the extruding machine may be of any weil-known or approved form of which the front portion only is shown and represented in the drawings by I. The usual screw or plodder 2 is housed within the liner 3 of the cylinder, and

projects therefrom for co-operation with the fixed member 4 of the strainer head. This member 4 is secured in position on the cylinder by means of a series of stud bolts 5 which extend outwardly from the cylinder I and register with holes formed in the face plate 6 of the member 4. Nuts I are provided for threading on the bolts 5 in order to secure the face plate and hence the member l in position on the cylinder. The member 4 includes an inner liner 8 which is shouldered at 9 to match a reduced flange I0 that projects forwardly from the bore liner 3. A suitable washer Il may be placed between the cylinder I and the bore liner 3 on one hand, and the face plate 6 andthe inner liner 8 on the other hand.

Suitable vpassages I2 are disposed in the member d for the circulation of a temperature controlling mediumin-'aymanner well understood in this art. `r'.llh'e interior of the member 4 immediately in advance ofthe screw receiving portion expands ory ares abruptztq f the shoulder I3, and, vin order to control the temperature at this point, I embed a tube I4 byrouting or otherwise cutting out the surfaceof the shoulder I3 Aand then cover over the tube with metal Aor other suitable material appropriatelysecuredfin place. The ends I5, I6 of the tube I4, shownl in .dottedlines in Figs. 2 and 3, are arranged to extend Vdownwardly toward the outer circumference ofthe .member and are provided with couplings I.'I,'&I8,'k respectively, for connecting the temperature vci)ntrolling medium, such, for instance, as'steam or'fwater.

` The movable member; oftlie:`--head is denoted by I9 and has its inner circumference 20 for a short distance substantially equal to the inner diameter of the shoulder I3, then it is ared forwardly and outwardly at 2|, though its are is not as abrupt asthat of the interior of the ilxed member 4 between the end of the'screw and the shoulder I3. The movable member I9 has also formed in the inner circumference 29, 2I vertical partitions 22, 23 and connecting horizontal partitions 24, 25 which serve to divide the material passing therethrough into four sections. Each partition is tapered inwardly at 26 thence outwardly at 21 to allow the plastic material to flow freely therethrough.

The inner surface of the movable member I9 is recessed at 28 for the reception of a relatively thin foraminous plate 29, the perforations in which are denoted by 39. This plate 29 is secured in position in the recess 28 by screws 3l and arranged to abut the vertical and horizontal partitions which prevent the plate from buckling or becoming distorted by the action of the material being forced away from the screw or plodder.

A screen or strainer 32 is interposed between the shoulder I3 and the plate 29 when the members 4 and I9 are assembled.

The movable member I9 is removably secured to the fixed member by means of a series of bolts 33, each of which is provided with a head 34 mounted to swing on a pivot 35 carried by ears 36, 31 radially disposed on the periphery of the face plate 6, and the threaded outer end of each bolt is arranged to move into and out of a pair of lugs 38, 39 extending' outwardly from the movable member I9. A washer 40 and a nut 4I are disposed on the bolt, with the washer in position to engage the lugs 38, 39, so that, as the nut is screwed on its bolt, the member I9 by means of its lugs will be drawn toward the member 4 until the plate 29 causes the screen 32 to be seated and tightly held upon the shoulder I3.

The member I9 is adapted to be swung into and out of engagement with the member 4, when the bolts are released from the lugs 38, 39, by means of a hinge formed by knuckles 42, 43 on the movable member I9 loosely mounted on pins 44, 45 which are fixed in projections 46, 41 extending laterally from the side of the fixed member 4,

In order that the material extruded may be cut transversely at the point of delivery, I provide a cutter 48 in the form of a wire stretched diametrically across the end of the member I9, the outer ends of which wire are secured to studs 49, 50 carried by the half-sections 5I, 52 which are secured together at 53, 54 by means of bolts 55 and nuts 56 to form an annular ring. This ring is arranged to rotate in an annular groove 51 formed adjacent the outer end of the member I9.

In Figs. 1 to 3 inclusive, this ring is provided with a series of outwardly extending sockets 58 which are adapted to receive a pinch bar or other suitable means (not shown) for manually moving the ring in its groove and the cut-off wire 48 across the outlet of the movable member.

In Figs. 4 and 5 there is shown a modified form of severing means which comprises a cut-off Wire 59 having its ends fixed to studs 60, 6I carried by a ring gear 62 arranged to rotate in an annular recess 63 on the movable member 64 of the head. This ring gear 62 is retained in the recess 63 by means of an annular ring 65 secured to the end of the member 64 by screws 66. The ring gear 62 is arranged to meshwith a pinion 61 mounted on one end of a shaft 68 journaled in the bearing 69 on the member 64. 'I'he other end of the shaft 68 is provided with a spiral gear 10 which coacts with the spiral gear 1I mounted to rotate on a hinged pin 'I2 fixed in the knuckle 13 on the hinge.

' Arms 14, 15 extend from the knuckle 13 in position to form the journal for a drive shaft 16 having keyed thereon a spiral gear 11 which meshes with the spiral gear 1I In operation: The material to be strained, such, for instance, as ground up or masticated old rubber products, and the like. is urgedforwardly by the screw 2, passed into the flared chamber in the fixed member'4 of the head immediately in front of the screw, then through the screen 32 and holes 30 in the plate 29 and then through the flared outlets adjacent thereto in the movable member I9, where it is divided longitudinally into four sections by the vertical and horizontal partitions. 'Ihe passage of the material from the screw into the adjacent chamber is more rapid than its movement from the plate 29 into the divided outlet because of the obstruction provided by the said plate. Theprovision of the abruptly flared chamber between the screw and screen, and the less abruptly flared outlets conform the device to this condition. Additionally, the fact that the screen is'of much greater cross sectional area than the screw receiving portion lends to the increase in output of the device by permitting the screw to work out or near its capacity instead of hampering it by back pressure upon the material. After a certain amount of material has been strained, it may be found desirous to clean or remove the screen or plate and, in order to bring the screen to a position to be operated upon, the nuts 4I and washers 40 on the bolts 33 are backed off away from the lugs 38, 39 on the movable member I9, so that the bolts 33 may be swung outwardly on their pivots 35 from between the lugs, whereupon the movable member I9 may be swung outwardly on its hinges away from the fixed member 4, as shown in dotted outline in Fig. 1.

When the member I9 has been moved away from the fixed member, the full surfaces of the screen 32 and plate 29 are exposed so that any cleaning or removal which may be required is readily and easily accomplished. After the screen or plate has been cleaned or renewed and returned to its former position, the member I9 is again swung on its hinges into engagement with the fixed member, and the bolts 33 replaced between the lugs 38, 39, so that the nuts and washers may be screwed into contact with the lugs until the member I9 is rigidly secured to the member 4, whereupon the machine is again placed in condition for further operation.

When it is desired to cut the material passing from the outlets in the movable member I9 into predetermined lengths, the operative causes the wire cutter to be moved in a plane transversely to the movement of the material. In Figs. l to 3 inclusive, the wire cutter 48 is actuated by inserting a pinch bar or other suitable tool in one of the sockets 58 in the split ring, and the split ring rotated in its annular groove 51 at least one-half a revolution. By reason of the wire 4B being stretched between studs 49, 50 which are disposed in the ring at diametrically opposite points and the ring rotated, the wire will be caused to move transversely across the outlets in the movable-member and thereby cut the material passing outwardly therefrom.

In Figs. 4 and 5 the severing means 59 is actuated by the movement of the ring gear 62 in its annular recess 63 in the movable member 64, which movement of the ring gear is motivated from a source of power (not shown) applied to the shaft 16 having keyed thereon a spiral gear 11 which transmits its motion to the spiral gear 1I loosely'mounted on the hinged pin 12 of the `knuckle 13, which gear 1I, in turn, moves the spiral gear 10 and the shaft 68 having the pinion 81 thereon, which pinion 81 meshes with the ring gear 82.

'Ihe construction above described enables the members forming the strainer head to be separated and replaced; such removal being accomplished in a ready and expeditious manner. The' readjustment vof the parts in the exactly desired positions is readily assumed. The device is of simple character, easily manufactured, and readily adapted to a strainer or approved extruding machine.

It will be understood that various changes may be resorted to in the form, construction and arrangement of the several parts without departing from the spirit and scope of my invention, and hence I do not intend to be limited to the details herein shown and described, except as they may be included in the claims.

What I claim is: y

1. In combination with the cylinder and screw of an extruding machine, a head comprising fixed and movable members hinged together, each member having an opening therethrough for the passage of the material, said opening ln the fixed member being abruptly flared immediately in advance of the screw receiving portion of the member and the opening in the movable member slightly flared outwardly therefrom, said-,movable member having diametrically opposed partitions in the ilared opening, a relatively thin strainer plate interposed between the members in posiltion to'be reinforced and -supported against lateral distortion by said partitions, and means movable on the iixed member and adapted to engage the movable member for locking the members togethei".

2. In combination with the cylinder and screw of an extruding machine, a head comprising fixed and movable members hinged together, eachv member having an opening therethrough for the passage of the material, said. opening in the fixed member being abruptly flared immediately in advance of the screw receiving portion of the member and the opening in the movable member slightlyfilared outwardly therefrom, said movable member having diametrically opposed partitions in the ared opening, a relatively thin strainer plate interposed between the members in position to be reinforced and supported against lateral distortion by said partitions, said strainer plate being removably secured to the movable member, and means movable on the fixed member and adapted to engage the movable member for locking the members together.

3. In combination with the cylinder and screw of an extruding machine, a head comprising Iixed and movable members hinged together, each member having an opening therethrough for the passage of the material, said opening in the xed member being abruptly flared immediately in advance of the screw receiving portion of the member and having a shoulder formed therein adjacent the outer end of the abruptly flared opening, said opening in the movable member being slightly iiared, said movable member having diametrically opposed partitions in the ared opening, a relatively thin strainer plate interposed between the members and seated against said shoulder in position to be reinforced and supported against lateral distortion by said partitions, and means movable on the xed member and adapted to engage the movable member for locking the members together, n

4. In combination with the cylinder and screw oi.' an extruding machine, a head comprising ilxed and movable members hinged together, each member having an opening 'therethrough for the passage of the material, said opening'l in the .iixed member being abruptly ared immediately in advance of .the screw receiving portion of the member and having a shoulder formed therein adjacent the outer end of the abruptly ilared opening, said opening` in the movable member being slightly narod, said movable member having diametrically opposed partitions in the dared opening, a relatively thin strainer plate interposed between the members and seated against said shoulder in position to be reinforced and supported against lateral distortion by said partitions, said strainer plate being removably s ecured to the movable member, and means movable on the xed member and adapted to engage' the movable member for locking the members together.

5. In an extruding machine, the combination with the cylinder and screw, of a head comprising a member iixed to the cylinder and a member hinged to swing toward and away from the fixed member, said fixed member having a longitudinal bore for the end of the screw, a chamber adjacent the end of the screw, the walls'of satd chamber being abruptly flared outwardly from the bore of the cylinder, said movable member having an opening for the passage of the material therethrough, the interior diameter of said opening being substantially equal to the outer diameter of the ilared chamber and slightly flared outwardly, a strainer plate interposed between the members and adjacent the flared chamber, and means for locking the members together.

6. In an extruding machine, the combination with the cylinder and screw, of a head comprising a member ilxed to the cylinder and a member hinged to swing toward and away from the xed member, said lxed member having a longitudinal bore for the end of the screwa chamber adjacent the end of the screw, the walls of said chamber being abruptly flared outwardly from the bore of the cylinder, said movable member having an opening for the passage of the material therethrough, the interior diameter of said opening being substantially equal to the outer diameter of the ilared chamber and slightly flared outwardly, a strainer plate removably secured to the interior face of the movable member in position to span the flared chamber when the members are assembled, and means for locking the members together.

7. In an extruding machine, the combination with the cylinder and screw, of a head comprising a member fixed to the cylinder and a member 1 hinged to vswing toward and away from the xed member, said fixed member having a longitudinal bore for the end of the screw, a chamber adjacent the end of the screw, the walls of said chamber being abruptly flared outwardly from the bore of the cylinder and terminating in an hinged to swing toward and away from the iixed member, said tlxed member having a longitudinal bore for the end of the screw, a chamber adjacent the end oi.' the screw, the walls oi' said chamber being abruptly ilared outwardly from the bore of the cylinder and terminating in an annular recess, said movable member having an opening i'or the passage of the material therethrough, the interior diameter of said opening being substantially equal to the outer diameter of the ilared chamber and slightly iiared outwardly, a strainer plate removably secured to the interior i'ace oi' the movable member in position to seat in said recess when the members are assembled, and means for locking the members together.

9. In an extruding machine, the combination with the cylinder and screw, of a head comprising a member fixed to the cylinder and a swinglng member carried by the xed member, said xed member having a longitudinal bore for the end of the screw, a foraminous plate and straining screen carried by the head in spaced relation to the front end of the screw and in spaced relation to the front end of the swinging member so as to form chambers for the passage o! the extruded material on each side of the foraminous platejthe diameter o! said chambers being greater than the diameter of the screw bore, means for locking the xed and swinging members together, an annular support mountedat the front end of the swinging member, an elongated severing member of such small cross-sectional dimension as to oier no substantial resistance to the extrusion of the material and to be adapted to cut the material both longitudinally and transversely, said severing member being free of supporting or reinforcing means intermediate its ends and being xedly secured at both its ends to said annular support, and means for rotating said annular support so as to twist said severing member about an imaginary point substantially in line with the axis of extrusion i'or periodically transversely cutting the extruded material upon a diametrical line.

VERNON ROYLE.

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