US3876161A - Automatic yarn transfer system - Google Patents

Automatic yarn transfer system Download PDF

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Publication number
US3876161A
US3876161A US354920A US35492073A US3876161A US 3876161 A US3876161 A US 3876161A US 354920 A US354920 A US 354920A US 35492073 A US35492073 A US 35492073A US 3876161 A US3876161 A US 3876161A
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United States
Prior art keywords
yarn
chuck
chucks
drive roll
running
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Expired - Lifetime
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US354920A
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English (en)
Inventor
Harry B Miller
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Savio SpA
Original Assignee
Industrie Werke Karlsruhe Ausburg AG
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Priority to US354920A priority Critical patent/US3876161A/en
Priority to CH489374A priority patent/CH568234A5/xx
Priority to NL7404776A priority patent/NL7404776A/xx
Priority to DE19742418134 priority patent/DE2418134C3/de
Priority to GB1697074A priority patent/GB1443848A/en
Priority to IT21754/74A priority patent/IT1009979B/it
Priority to JP49046066A priority patent/JPS5241383B2/ja
Priority to US05/556,556 priority patent/US4034923A/en
Application granted granted Critical
Publication of US3876161A publication Critical patent/US3876161A/en
Priority to DE2608914A priority patent/DE2608914C3/de
Assigned to OFFICINE SAVIO S.P.A. reassignment OFFICINE SAVIO S.P.A. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: INDUSTRIE-WERKE KARLSRUHE AKTIENGESELLSCHAFT
Assigned to SAVIO SPA reassignment SAVIO SPA CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: OFFICINE SAVIO SPA
Anticipated expiration legal-status Critical
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/04—Arrangements for removing completed take-up packages and or replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • C'- v .1 a drive roll and at least two rotatable chucks each f Fleld of Search A, PW, R is adapted to carry a tube and is mov- 242/18 25 v 1251 able into and out of driven engagement with the drive roll.
  • a traversing arrangement traverses a running l l References Cited yarn which is being wound onto one of the chucks, so
  • the present invention relates generally to an automatic yarn transfer system. and more particularly to an automatic yarn transfer system in a winder for yarn and the like.
  • Yarn winding machines or winders are used by all yarn producers. usually in batteries of dozens or even hundreds of such winding machines. These machines are utilized to wind yarn onto a bobbin tube which is mounted on a rotatable chuck. in order to form a yarn package on the bobbin tube.
  • the thread or yarn is usually supplied directly from a producer to the winding apparatus.
  • a yarn package on the winding apparatus has reached full size. that is when the yarn package has been completed. the incoming running"yarn must be cut. the bobbin tube with the package removed. a new bobbin tube put in place on the chuck. and the winder must be rethreaded with the running yarn so that the yarn can being to form a new package on the new bobbin tube.
  • the package size. shape. weight or the like usually vary widely. depending upon the requirements of a particular order.
  • Textile mills using such winders usually operate without interruptions. except for those caused by a breakdown. This means that thousands of workers are required to perform the necessary operations 24 hours a day. 7 days a week. In part. the number of workers required is so high because each winding machine requires the individual attention of an operator every time a bobbin tube must be changed. that is every time a package has been completed and a new bobbin tube must be put in place on the chuck and the winder rethreaded. Evidently. this is very expensive in terms of labor cost. especially if small packages must be produced. inasmuch as the heavier the yarn and the smaller the package, the more often the changing of bobbin tubes and re-threading of the winder must be performed.
  • the incoming running yarn must be drawn into a string-up or thread-up aspirator and severed from the completed package. This is necessary because the yarn runs continuously and does not stop during the time required for removing the completed package and replacing it with a new bobbin tube.
  • Another object of the present invention is to provide a novel automatic yarn transfer system for use in winders for yarn and the likev Another object of the invention is to provide such a novel yarn transfer system for use with yarn winders having two. three or more chucks.
  • An additional object of the invention is to provide such a yarn transfer system which permits the automatic formation of a transfer tail on each yarn package.
  • Another object of the invention is to provide a novel yarn transfer system in accordance with the present invention which makes it possible for a single winder to simultaneously operate with one or more running threads or yarns.
  • Still a further object of the invention is to provide a system of the type in question which makes it possible to produce yarn packages of uniform yarn length and which, when yarn is subsequently withdrawn from them will deliver the yarn uniformly and without plucks.
  • a further object of the invention is to provide such a yarn transfer system wherein the crossing and entangling of the running yarn is avoided, even though two or more yarns may be running simultaneously to the same winder and be automatically transferred from chuck to chuck upon completion of the respective yarn packages.
  • Another object of the invention is to provide an improved aspirator for use in conjunction which the novel automatic yarn transfer system of the present invention.
  • An additional object of the invention is to provide improved cutters for severing the yarn prior to transfer from a completed package to a new chuck. and for severing yarn which runs through the aspirator and which is being picked up by a new chuck for starting of a new yarn package.
  • a winder for yarn and the like in a combination which comprises a drive roll and at least two rotatable chucks each of which is adapted to carry a bobbin tube and is movable into and out of driven engagement with the drive roll.
  • a traversing arrangement is provided for traversing a running yarn which is being wound onto one of the chucks. so as to form a yarn package on the latter.
  • Transfer means is provided for effecting the automatic transfer of the running yarn from the one chuck upon forming of the yarn package thereon. to the other of the chucks.
  • FIG. I is an exploded schematic view, illustrating those components of a winder provided with my automatic yarn transfer system which are necessary for an understanding of the invention
  • FIG. 2 is a somewhat diagrammatic front-elevational view of the winder in FIG. I;
  • FIG. 3 is a diagrammatic side-elevational view of the winder shown in FIG. 2;
  • FIGS. 4-42 are respective diagrammatic front views illustrating yarn-transfer sequences in the novel winder
  • FIG. [3 is a top-plan view of the drive roll of the novel winder
  • FIG. [4 is an elevational view on line I4l4 of FIG. 3, looking in the direction of the indicated arrows;
  • FIG. I5 is a fragmentary exploded detail view illustrating details of various components of the aspirator of the winder in FIGS. 1-3;
  • FIG. 16 is a fragmentary vertical section through the aspirator of FIGS. I-3 and 15. with the components of FIG. I5 shown in assembled condition;
  • FIG. 17 is an exploded detail view illustrating one type of yarn cutter employed in the novel winder
  • FIG. I8 is a front-elevational view of FIG. I7.
  • FIG.I9 is a section taken on line I9-I9 of FIG. I8;
  • FIG. 20 is an exploded view illustrating details of the components of another type of yarn cutter employed in the novel winder
  • FIG. ZI is a front elevation of the yarn cutter shown in FIG. 20;
  • FIGS. 22-27 are respective diagrammatic detail views showing a complete operational sequence of the cutter in FIGS. 20 and 21;
  • FIG. 28 is a pneumatic schematic illustrating an airlogic control system for controlling the functions of the novel winder.
  • a winder employing the transfer system according to the present invention should advantageous be of the surface drive type. That is it should have a drive roll which drives the rotatable chucks of the winder in response to contact of these chucks with the circumferential surface of the drive roll.
  • the drive roll should have a hollow stationary shaft upon which it rotates and through which the aspirator can discharge aspirator running yarn. in the manner to be described later. Two or more chucks should be provided.
  • a traverse arrangement for traversing the running yarn should be provided at the opposite side of the vertical plane. opposite the third chuck. and the chucks should move horizontally towards and away from the drive roll. that is into and out ofengagement therewith.
  • FIGS. I-3, I3 and I4 it will be seen that in these Figures I have illustrated details of the basic machine components of the novel winder.
  • Reference numeral I identifies a drive roll which is of the surface drive type and which is provided as shown in FIG. 13. with a plurality of circumferentially extending shallow grooves or flutes I30 in its outer circumferential sur face.
  • the purpose of these flutes I30 is to assure that the yarn Y running in contact with the outer circumferential surface of the drive roll I and onto a respective one of the chucks which are to be described, will be somewhat retarded in the manner illustrated in FIG. 13.
  • the drive roll rotates about a stationary axis and is driven by a belt 2 which receives motion from an electromotor 3.
  • a conventional traverse guide 4 of the type used in most winders. which serves to traverse the running yarn axially of a respective chuck so as to wind a uniform package thereon.
  • Reference numeral 5 identities a support on which the traverse guide 4, whose construction and operation are conventional and therefore need not be described in detail. is mounted.
  • the traverse guide is provided at its forward end with a yarn-intercepting portion 4a whose operation will be readily evident from a perusal of FIGS. 2 and 3.
  • a yarn aspirator 6, which will be described in detail with reference to FIGS. 15 and I6 is mounted on a hollow tube or shaft which extends through shaft 22 of the drive roll.
  • This hollow shaft is identified with reference numeral la and extends to the rear of the winder as shown in FIG. 3.
  • the winder is provided with three chuncks C1, C2 and C3 each of which is provided with a guide 7 permitting it to move as indicated by the double-headed arrows, namely horizontally towards and away from the drive roll 1.
  • Two of the chucks. namely Cl and C2 are located so as to engage the drive roll 1 below a horizontal plane passing through the axis of rotation of the drive roll, and the chuck C3 is located so as to engage drive roll 1 above the chuck C2, namely to the left of a vertical plane passing through the axis of rotation of the drive roll and opposite the traverse guide 4.
  • Reference numeral 8 diagrammatically indicates drives for the chucks C1, C2 and C3 so that the chucks can be moved along the guides 7 by operation of the fluid-operated cylinder 82.
  • the chucks are advantageously pneumatically operated so as to clampingly engage a bobbin tube (not shown) which is slipped over them and on which the respective yarn package is to be wound.
  • the swing arm 9 whose operation and purpose will he described later, is mounted on a support for pivotal movement about a pivot axis 11. This pivotal movement is transmitted to the swing arm 9 and the support 10 via pneumatically operated cylinder and piston unit 12. In the region of its lower end the swing arm 9 carries a shaped yarn guide plate 13 and a yarn cutter 16, the details of which latter will be described with reference to FIGS. 17-19.
  • the swing arm 9 could. incidentally, be replaced by another component which performs the same function concerning the movement of the yarn.
  • a cylinder and piston unit could be used, having the plate 13 and the cutter 16 mounted on it. This would require mere straight-line extension and retraction, rather than a pivoting movement and would save space.
  • Reference numeral 14 designates a control cabinet provided with a plurality of function-controlling switches 15, for instance taggle switches.
  • the free end of the chucks C1, C2 and C3 carries a further yarn cutter 17 which serves not only for cutting but also for previously picking up the yarn which is being transferred to the respective chuck. Details of the cutter 17 will be described later with reference to FIGS. -27.
  • the aspirator 6 is turnable in clockwise direction about the hollow stationary axis of the drive roll 1, as will be described subsequently, and can be arrested at several predetermined positions.
  • the shaft 1a carries a registration plate 18 which rotates with it and which is provided with a plurality of circumferentially spaced holes 19.
  • a shot pin 20 can be advanced into, and retracted from the respective holes 19 by a pneumatic cylinder 21 which is mounted on a fixed component of the winder.
  • the plate 18 and thereby the aspirator 6 can be arrested at predetermined angular positions which are designated with reference characters I, II, III,
  • FIG. 14 The direction of rotation of the plate 18 is indicated by the arrow associated with it in FIG. 14.
  • the cams 281-285 are mounted for rotation and have motion transmitted to their shaft 300 by a sprocket 301 mounted on the same, and which is turn driven by a sprocket 302 that rotates with shaft la. The latter is rotated by a sprocket 303 which has motion transmitted to it from a not illustrated drive.
  • top guide TG bottom guide BG
  • yarn pusher YPA yarn pusher YPB
  • yarn pusher YPC yarn pusher YPC
  • Each of the guides and pushers is provided with a pneumatically operated cylinder and piston unit which effect movement of the respective guide or pusher in the direction indicated by the respective double-headed arrows.
  • the top guides and bottom guides TG and BG each comprise the illustrated pigtail yarn guides and it is their purpose to position the two running yarns for pickup by yarn guides, which are attached to the yarn pushers YPA and YPB, at transfer time.
  • the guides TG and BG operate twice every six transfer cycles, namely on the first and on the fourth transfer cycle.
  • the yarn pushers YPA nad YPB serve to pick up the respective running yarns and to push them out of engagement with the traverse guide 4 towards the swing arm 9, in readiness for pickup by the guide plate 13 of the latter. This pickup occurs as the swing arm 9 moves forward (towards the left in FIG.
  • the pusher YPA operates on the first, third, fourth and sixth transfer cycles and the pusher YPB operates on the second and fifth cycle.
  • the yarn pusher YPC serves to push both of the running yarns out of the traverse guide 4 simultaneously. It will operate to do so at the same time as the pusher YPA, namely on the first, seventh, thirteenth, etc. transfer cycles.
  • the pusher YPC retracts immediately after one of the running yarn has been drawn into the aspirator 6, thus allowing the other running yarn to move back into engagement with the traverse guide 4.
  • the purpose of the pusher YPC is to eliminate crossed and entangled yarns during transfer operations.
  • FIGS. 4-12 illustrate one operational sequence of the novel winder, and the following description should be taken in conjunction with these Figures as well as with FIG. 28.
  • cam switches 2810 285 c which each operate an associated pneumatic switch.
  • These switches themseleves are represented in FIG. 28 by the boxes located above the respective cam portions 281:1-285 c. and because of this location the activation of each switch by its cam wil hereafter be called Iifting" since the cam lifts the switch-operating plunger, and its deactivation will be called droppingsince the cam allows the plunger to drop again.
  • the yarn pushers YPA and YPC are each controlled by its own cam switch 284a and 285e, respectively. These cam switches are interconnected with the switch 28411 which operates the swing arm 9 so that it is the operation of the latter which controls the timing and movement of the yarn pushers YPA and YPC.
  • a pneumatic delay is built into the operation of the swing arm 9 so that the latter moves to the full-line position of FIG. 3 only after the yarn pushers YPA and YPC have been extended.
  • the plate I8 has been rotating and the shot pin 20. which is permanently urged into engagement with the facing surface of the plate I8. now drops into the hole I9 corresponding to the transfer position IV; at the same time the shot pin delay cam switch 285a drops. starting a pneumatic delay which allows the shot pin 20 to hold the mechanism in this position for a preset period of time.
  • the yarn cutter I6 on the swing arm is operated. This can for instance be effected by permitting a magnetically operated reed switch to activate a solenoid which permits the flow of air to the cutter I6. Since at this time there is no yarn going through the cutter. the sequence thus far referring only to a stringup operation.
  • the flow of air admitted t the cutter I6 also operates a valve ⁇ vhch causes the cylinder of the yarn pusher YPC to retract.
  • the shot pin 20 is retracted from the hole corresponding to the transfer position IV and the plate 18 now rotates until the shot pin enters into the hole corresponding to position I.
  • the free end or open end ofthe aspirator 6. into which the front yarn FY has been passing. is located adjacent chuck C].
  • the shot pin 20 enters position I.
  • earn switch 285a drops and activates the hold sequence while cam switch 284b is released and allows yarn pusher YPA to retract, followed after a pneumatic delay by retraction of the swing arm 9 to the brokenline position of FIG. 3.
  • This return movement of the swing arm 9 permits the front yarn FY to recede from the plane of the drawing (see FIG. 6) so that it comes into ranges of and is engaged by the pick-up and cutter device 17 on chuck CI; this device picks up the yarn from the aspirator 6, forms a yarn transfer tail and at the same time severs the yarn from that which is already in the aspirator 6. and yarn can now being to wind onto the chuck CI.
  • the predetermined delay period is completed and shot pin 20 is retracted from position I.
  • cam switch 285b is lifted to prevent the shot pin 20 from entering into the hole at position II so that the aspirator 6 and the plate 18 will continue to rotate until the shot pin reaches and enters into the hole at position number III. but is the rest position.
  • cam switch 28217 drops and chuck C2 which previously may have been in engagement with the drive roll I, moves out of engagement therewith.
  • the yarn RY is now engaged and severed by the cutter 17 on chuck C2, so that winding commences onto this chuck. With both yarns now strung up. operation is automatic from here on.
  • the machine is now ready for transfer of yarn FY from the chuck CI to chuck C3 during the third operating cycle.
  • cam switch 285a drops. activating the present delay.
  • cutter I6 operates but since this is still a string-up operation no yarn will be present and none can be cut.
  • cam switch 285] is lifted and. in conjunction with already activated cam switch 284a.
  • the yarn pusher YPA is now caused to extend (towards the left in FIG. I).
  • the yarn guide provided on the yarn pusher YPA then pushes out the front yarn FY towards the left (in FIGS.
  • the yarn is sucked into the aspirator 6 and passes through the axis la to be accomodated in a waste bin or the like located at the rear of the winder.
  • the shot pin 20 pulls out of the hole at position IV and the aspirator 6 beings its clockwise travel again. Because at this time the cam switch 285! is activated. the shot pin 20 does not enter into the holes at positions I and II. but will enter only into the hole at position III at which time the free end of the aspirator with the front yarn FY which is continuously running into the latter. will be located opposite chuck C3. During the travel of the aspirator 6 to this position.
  • cam switch 28Ib drops and causes chuck CI to move away from the drive roll I. that is towards the right in FIG. 10.
  • the cam switch 284) is released and causes the cylinder of yarn pusher YPA to retract the same. followed after the programmed delay by movement of the swing arm 9 back to its broken-line position of FIG. 3.
  • This movement allows the yarn FY to recede enough from the plane of the drawing in FIG. 10 so that it can come in contact with a pickup and cutter device 17 on chuck C3 which device entrains the yarn. forming a transfer tail. and cuts it off the portion already in the aspirator 6. Since the chuck C3 of course rotates at this time due to its engagement with the drive roll I. winding ofa yarn package on chuck C3 now begins.
  • This fifth operating cycle begins when the yarn package on chuck C3 has reached its desired size and the shot pin 20 is retracted from the hole at position III. permitting the aspirator 6 to move in a clockwise direction. At the same time. cam switch 282! lifts. permitting chuck C2 to move back into engagement with the drive roll I. and cam switch 284! is operated. This causes the yarn pusher YPB to extend and push the front yarn FY. which has been running onto chuck C3. to the left and out of engagement with the traverse guide 4. After the previously .mentioned delay. the swing arm 9 moves forwardly. engaging the front yarn FY with its guide plate I3 and pushing the front yarn FY to the left. that is to the position shown in FIG. 3.
  • cam switch 285a now drops. initiating a further delay and at the same time cam switch 284! also drops. causing pusher YPB to retract and subsequently the swing arm 9 to move back to its broken line position. This allows the yarn FY to be engaged and entrained by the pickup and cutter device I7 on chuck C2 (see FIG. 12) and to be cut so that it can then be wound onto the chuck C2.
  • the shot pin 20 is withdrawn from the hole at position II and the aspirator continues to move until its shot pin enters into the hole at rest position III.
  • the cam switch 281a drops and the switch 284:: is lifted. preparing the yarn pushers for the next operating cycle. During this time. also. the cam switch 283 drops and causes chuck C3 to move towards the left. away from the drive roll I so that the yarn package on this chuck can be doffed.
  • the sixth cycle begins as the yarn package on chuck CI has reached full size and the yarn running onto chuck Cl, namely the yarn RY. is to be transferred to chuck C3.
  • the shot pin is withdrawn from the hole at position ill and the aspirator be gins to move in clockwise direction.
  • Cam switch 283a lifts and causes chuck C3, from which the package has been removed and on which a new empty bobbin tube has been installed to move towards the right into contact with the drive roll 1.
  • Cam switch 284 lifts. causing the yarn pusher YPA to extend towards the left and pick up the rear yarn RY which is running onto chuck C1. Swing arm 9 moves forward to its extended position. picking up the yarns RY with its plate 13 and holding it ready for engagement by the aspirator 6.
  • cam switch 285 drops. initiating the programmed delay.
  • the cutter 16 cuts the rear yarn RY running onto the chuck Cl, so that the loose end of the running yarn can be aspirated into the aspirator 6.
  • cam switch 285b has been raised so that the shot pin by passes the hole at position I and ll and enters only into the hole at position Ill after cam switch 285! has dropped again.
  • cam switch 285 drops and initiates a further delay.
  • cam switch 284i drops and causes the yarn pusher YPA to retract. Subsequently. swing arm 9 returns to its retracted posi tion (the broken-line position in FIG. 3).
  • the six operating cycles constitute a complete operating sequence of the winder and are constantly repeated in this sequence.
  • the first cycie described herein was actually a string-up cycle and did not take place as part of the automatic operation of the winder. It is necessary to examine one more cycle which is the first cycle of the operating sequence when the winder operates fully automatically. This is necessary because one of the operations which took place in the first cycle previously described produced no direct result. namely the operation relating to the movement of the yarn pusher YPC.
  • a comparison of the cycle description which follows with the description of the first cycle that was given earlier will show the difference.
  • cam switch 285a drops. initiating the programmed delay.
  • the swing arm 9 reaches its forward position, that is the full-line position.
  • the yarn running onto the chuck C2 and engaged by the cutter 16 is cut by the latter. and its free end is picked up by the aspirator 6 into which it is drawn.
  • the pusher YPC is retracted, for instance by operating a valve which switches off the supply of air to its cylinder in response to operation of the cutter l6, and the yarn engaged by the pusher YPC can thus move back into engagement with the traverse guide 4.
  • cam switch 285a drops to permit pusher YPA to retract and swing arm 9 to move back to its broken line position. thus allowing the yarn engaged by the swing arm to become engaged and entrained by the pickup and cutter device 17 on chuck Cl, whereupon it will be cut and being to wind onto the chuck C].
  • the hot pin 20 is withdrawn from the hole at position I and the cam switch 285b is lifted.
  • cam switch 282 drops. causing chunck C2 to move out of engagement with the drive roll 1 so that the yarn package can be removed from this chuck. Also, cam switch 2851 drops and switches 284a and 281a respectively drop and rise in order to prepare pushers YPA and YPB for the next operating cycle.
  • the periods at which transfer of yarn from one chuck to another is intitated will depend upon the size of yarn packages to be formed on the respective chuck; a timer can be provided which can be set as desired in accordance with the time period required for a yarn package of desired size to be formed on a respective chuck.
  • the respective yarn will of course alway be in contact with the circumferential surface of the drive roll as it runs onto one ofthe chucks or is transferred from one to another chuck.
  • the yarn pushers and guides are appropriately operated. If it is assumed that the second yarn closest to the plane of FIG. 2 (and left-most in FIG. 3) is the running yarn which is provided with guide BG and being wound onto a package, and the first yarn behind it is provided in TO and has completed the formation of a package and is to be transferred to a waiting reserve chuck. then transferring the first yarn would obviously cause it to tangle with the second yarn. This is avoided by operating guide BG which shifts the second yarn rearwardly with reference to the plane of FIG. 2, and operating guide TG which shifts the first yarn forwardly with reference to the same plane. Now.
  • pusher YPA is operated to shift the first yarn to the left in FIG. 2. and pusher YPC is operated to shift the second yarn in the same direction but not quite as far as the pusher YPA shifts its first yarn to the left. Both yarns now continue to run in parallel and are engaged by the guide plate 13 of the swing arm 9 into the two notches of which they respectively enter. This effectively avoids any tangling or crossing of the yarns. as well as rubbing of the same against each other, which could lead to yarn damage.
  • the first yarn can now be engaged by the aspirator as previously described. and cut off for the package onto which it has been winding. by the swing arm cutter I6. At this time. the second yarn is allowed to return into engagement with the guide element of the traverse guide 4, by retracting yarn pusher YPC (to the right in FIG. 2). which yarn pusher is operated in response to operation of the swing arm cutter 16.
  • the aspirator 6 has certain features which are most important in conjunction with the overall operation of the novel winder. On the one hand. the construction of the aspirator. details of which will be discussed presently. assures that the yarn can easily and with strong suction be drawn through a l80 bend which is required in order to permit the yarn to be passed through the axis Ia of the drive roll to the rear side of the winder. contrary to conventional practice where the yarn is discharged at the front of the winder. Furthermore, the discharge of the waste yarn in this manner, namely to the rear of the winder. is possible at all only by having the aspirator 6 mounted on the hollow axis In ofthe drive roll, thereby greatly simplifying the disposal of waste yarn as outlined earlier.
  • the particular mounting of the aspirator. which has been chosen in accordance with the present invention. provides the aspirator at a location which is ideal for wrapping the yarn engaged by the aspirator around the drive roll, and in particular wrapping it around the drive roll in the direction of the running yarn being would.
  • the aspirator can thus reach all of the chucks equally well and uniformly. and simplicity of yarn transfer is thus achieved with a minimum of complicated construction.
  • FIGS. 15 and 16 shows details ofthe aspirator 6.
  • Reference numeral I identifies an outer tube into which air is blown in the direction of the arrows in FIG. 16, and reference numeral I6I identifies an inner tube which is curved in substantial U-shape and through which air is drawn, also in direction of the arrows shown in FIG. 16.
  • the interior passage of the tube 161 is identified with reference numeral I66.
  • the end portion of the tube 161 is identified with reference numeral I62 and a cross tube extending from the tube I60 with which it communicates. to the end portion [62, is identified with reference numeral 163.
  • Reference numeral 164 designates an annular passage formed in the end portion 162.
  • reference numeral I65 designates screw threads formed in the free end of the end portion I62.
  • the inlet end of the passage [66 is designated with reference numeral 1660.
  • FIG. I5( is provided which can be threaded onto the screw threads I65 of the end portion 162. It has a transverse end wall 16711 which is formed with an inlet opening 168 into which yarn Y is to be aspirated.
  • a cylindrical member 169 is located within the confines of the cap 167 and provided with a center passage I70 and with a plurality of axially extending grooves I7I in its outer circumferential surface.
  • An O-ring I72 is compressed between the member I69 and the free end of the end portion I62 so as to seal the passage I64 from the passage 1660.
  • a cylindrical guide member I73 is located in the passage I70 of the member I69 and is itself provided with a center passage I75 which communicates with the opening I68 and with the inlet end [66a of the passage I66.
  • the outer circumferential surface of the member I73 is formed with a plurality of helically twisted groove I74 which also communicate with the inlet end 1660 and. in addition with a space I766 existing between a scaling member I76 and the member I69, so that the grooves [74 are in communication with the grooves 17] as shown in FIG. 16.
  • THE SWING ARM YARN CUTTER Another important feature according to the present invention is the yarn cutter 16 provided in the swing arm 9. This cutter is of the anvil type and is necessary to sever the running yarn from package that has already been formed on one of the chucks. The cutter must be highly reliable and rapid in its operation, and must be operable at a required moment in time.
  • FIGS. I7, 18 and 19 Such a construction is obtained with the cutter 16 which is illustrated in more detail in FIGS. I7, 18 and 19.
  • reference numeral designates a housing that is mounted. as diagrammatically illustrated in FIG. 19. on the swing arm 9.
  • the housing I90 is formed with an interior chamber 191 which has an open side.
  • the housing 190 is also provided with a bore 192 which communicates with the chamber 19] in the region of the closed side (the rear wall) of the chamber 19L
  • This bore can be connected with a pneumatic conduit 193 which has been diagrammatically illustrated in FIG. 19.
  • a cover plate or anvil member 194 is provided which can be secured to the housing 190 in suitable manner. for instance by means of screws through the illustrated holes. so as to overly the open side of the chamber 191.
  • the member 19 shows par ticularly clearly that the member 194 is provided with suitable apertures. such as the holes 196 (compare also FIG. 17) which extend from its side facing towards to its side facing outwardly away from the open side ofthe chamber 191.
  • the side facing outwardly away from the chamber 191 is provided with a leaf-spring 195 which is secured to the member 194 in appropriate manner. for instance by rivetting. by means ofa screw or the like and a portion of which overlies the holes 196 as shown in FIG. 17.
  • the side of the member 194 which faces the chamber 191 is recessed as best shown in FIGS. 17 and 19.
  • the rear wall of the chamber 191 is provided with a projecting stud 197 (see FIG.
  • a diaphragm 198 which may also be provided with a projec tion 199 which engages the stud 197.
  • the diaphragm 198 is so located that the bore 192 communicates with the chamber 19! rearwardly of the diaphragm 198.
  • a punch member 200 carrying at its side facing the anvil member 194 a projecting cutting edge 202.
  • two projections or pins I which extend into the holes 196 of the member 194. These are locating pins located on a common line transversely of the elongation of the cutting edge 202.
  • the cutter will thus be seen to be highly reliable in its operation. Because the yarn Y will always be located in proper position relative to the cutting edge 202, extending across the same and being maintained in this position by the locating pins 201.. Furthermore, due to the fact that the member 200 is always returned within the chamber 191 immediately upon termination of the admission of compressed air, the space for admission of the yarn Y to be cut. is always unobstructed.
  • each device 17 comprises a mounting member 210 which may be of substantially cylindrical configuration. as shown.
  • This mounting member is secured in appropriate manner forming no part of the present invention, on the free end of the respective chuck.
  • An exposed end face 21011 of the mounting member 210. which end face faces axially away from the chuck on which the member is mounted. has secured to it in overlying rela tionship but with some spacing from the surface 210a.
  • a yarn engaging member 211 of the particular configuration which is shown most clearly in FIG. 20.
  • the member 211 has in its arcuately recessed side two depressions. namely a smaller depression or recess 219 and a larger depression or recess 220.
  • a cutter blade 212 is releasably mounted on the side of the member 2]] which faces away from the surface 210a, bridging the recess 220 somewhat inwardly of the open side thereof.
  • the thickness of the member 211 that is its dimension measured between its two opposite major surfaces. increase from the end which is the right-hand end in FIG.. 20 towards the left-hand end.
  • a pair of holes 216 are provided in the surface 2100 from which they extend inwardly. and a wire bracket 213 of substantially U-shaped outlines has its two legs received in these holes 216, respectively.
  • a pusher pin 214 is provided having a portion of reduced cross section which is received in and serves as a guide for a helical expansion spring 215, the latter bearing upon the surface 210:: or. preferably. being in part received in an additional hole formed therein.
  • the spring 215 urges the bracket 213 outwardly away from the surface 210a and into biased engagement with that side of the member 211 which faces the surface 2100.
  • the location of the bracket 213 and of the pusher pin 214 are shown in broken lines in FIG. 21 with reference to the member 211.
  • the members 213 and 214 have each been shown twice in FIG. 20, once in fulllines in an exploded position and once in broken lines in the assembled position.
  • Located at opposite sides of the bight portion of the bracket 213 are two locating pins 210! which project into engagement with the member 21] and serve. as will be discussed presently. the same purpose as the locating pins 201 in FIG. 17.
  • the device 17 serves to pick up the running yarn which passes through the aspirator 6. when the inlet opening of the aspirator 6 is located adjacent the free end of the respective chuck. and thus adjacent the devices l7 thereon.
  • the yarn which is so held and passes through the aspirator. will be located forwardly of the device 17 due to the fact that it is pushed in such a position by the swing arm 9 which at the time aspirator 6 stops adjacent the respective chuck is in its full-line position shown in FIG. 3, When the swing arm 9 then moves back to its broken line position shown in FIG. 3, the inclination of the running yarn coming from above and entering into the aspirator 6 will change. that is the yarn will move into contact with the member 210 so that it can be engaged by the device 17.
  • FIGS. 22-27 A sequence of operation of the device 7 is illustrated in FIGS. 22-27.
  • FIG. 22 shows. by way of example, that the aspirator 6 is in such a position as to have its open inlet end adjacent the chuck Cl which is in engagement with the drive roll I and is being rotated by the same.
  • the yarn Y passes through the diagrammatically illustrated traverse guide 4 and around roll I and enters the inlet of the aspirator 6 at a point designated with reference numeral 221.
  • FIGS. 23-27 the showing of the drive roll and aspirator has been omitted for clarity and only the reference point 22] is illustrated.
  • the point 22l to which the yarn extend from above (after in this instance first passing around the drive roll I) is stationary in space because the aspirator 6 does not of course rotate during the pickup.
  • the yarn Y is severed from that yarn portion which extends into the aspirator and this latter yarn portion, now being free. is sucked away by the aspirator and ejected through the axis la. Now. the running yarn coming from the traverse guide 4 is being wound onto the chuck Cl. That portion of yarn Y which is clamped between the member 21] and the bracket 213, and which has been convoluted once or twice about the member 211 during the pick-up sequence just described, is a so-called transfer tail, that is it will hang free out of the yarn package finally formed. This is highly desirable because when such a package is later on placed onto a yarn processing machine.
  • the transfer tail of the working package (the package from which yarn is being withdrawn) is tied by the operator to a similar transfer tail of a reserve package so that, when the first package runs out, yarn will be immediately and automatically withdrawn from the reserve package. eliminating the necessity for stopping the machine to thread up the next package.
  • FIG. 28 it will be seen that in this FIG. there is illustrated a pneumatic control system for controlling the operations which have been described heretofore.
  • FIG. 28 is a pneumatic schematic and will be largely 'selfexplanatory.
  • Various components being controlled have been illustrated diagrammatically. and in particular there are shown the top guide T0. the bottom guide BG. the yarn pushers YPA, YPB and YPC. also illustrated is the swing arm 9, the drive roll 1 with the aspirator 6, and the chucks C1, C2 and C3.
  • each of the cams 281-284 has two cam portions which are diagrammatically shown in FIG. 28 as the cam portions 28hr. 28lh. 282a. 282b. 283a. 283b, 284a and 28411..
  • the cam 285 has three portions 28511. 28511 and 2856 (see also FIG. 3 Each of these cam portions cooperates with a pneumatic switch which are diagrammatically shown in FIG. 28 and are labelled. The connections between these switches and the various components being controlled by them are shown in FIG. 28.
  • the switch controlled by cam portions 281 controls the operation of yarn pusher YPB.
  • the switch controlled by cam portion 28th controls the movement of chuck Cl into and out of en gagement with the drive roll.
  • the switch controlled by cam portion 282a controls the program which effect return of the entire machine to string-up position, the switch associated with cam portion 282)) controls the movement of chuck C2 and that associated with cam portion 283a controls the movement of chuck C3.
  • the movements of top and bottom guides TG and BG are controlled by the switch associated with the cam portions 28311. and the switch associated with cam portions 284a controls movement of the yarn pusher YPA.
  • the swing arm 9 is controlled by the switch associated with cam portions 284! and the previously mentioned delays in the reaction of the shot pin 20 from the holes at the respective locations l-IV (which delay of course imposes the corresponding delay in clockwise move ment of the aspirator 6) are controlled by the switch associated with cam portion 2830.
  • the actual movement of the shot pin 20, or rather the cylinder 2l asso ciated therewith. is controlled by the switch associated with cam portion 285b, and the movement of the yarn pusher YPC is controlled by the switch associated with cam portion 285(.
  • the operation of the machine can be controlled by the air logic system shown in FIG. 28.
  • details of the various air switches and their interconnection have been omitted, because in themselves these features are not novel. It should also be understood that the operation of the machine could be controlled in other ways, for instance electrically.

Landscapes

  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
US354920A 1973-04-26 1973-04-26 Automatic yarn transfer system Expired - Lifetime US3876161A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US354920A US3876161A (en) 1973-04-26 1973-04-26 Automatic yarn transfer system
CH489374A CH568234A5 (enrdf_load_stackoverflow) 1973-04-26 1974-04-08
NL7404776A NL7404776A (enrdf_load_stackoverflow) 1973-04-26 1974-04-08
DE19742418134 DE2418134C3 (de) 1973-04-26 1974-04-13 Vorrichtung zum Aufspulen textiler Fäden
GB1697074A GB1443848A (en) 1973-04-26 1974-04-18 Apparatus for winding textile yarn
IT21754/74A IT1009979B (it) 1973-04-26 1974-04-22 Dispositivo per incannare fili tessili
JP49046066A JPS5241383B2 (enrdf_load_stackoverflow) 1973-04-26 1974-04-25
US05/556,556 US4034923A (en) 1973-04-26 1975-03-07 Winder for yarn and the like
DE2608914A DE2608914C3 (de) 1973-04-26 1976-03-04 Vorrichtung zum Aufspulen textiler Fäden

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US354920A US3876161A (en) 1973-04-26 1973-04-26 Automatic yarn transfer system

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/556,556 Continuation-In-Part US4034923A (en) 1973-04-26 1975-03-07 Winder for yarn and the like

Publications (1)

Publication Number Publication Date
US3876161A true US3876161A (en) 1975-04-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
US354920A Expired - Lifetime US3876161A (en) 1973-04-26 1973-04-26 Automatic yarn transfer system

Country Status (6)

Country Link
US (1) US3876161A (enrdf_load_stackoverflow)
JP (1) JPS5241383B2 (enrdf_load_stackoverflow)
CH (1) CH568234A5 (enrdf_load_stackoverflow)
GB (1) GB1443848A (enrdf_load_stackoverflow)
IT (1) IT1009979B (enrdf_load_stackoverflow)
NL (1) NL7404776A (enrdf_load_stackoverflow)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007883A (en) * 1974-12-09 1977-02-15 Rhone-Poulenc-Textile Simultaneous bobbin winding station
US4034923A (en) * 1973-04-26 1977-07-12 Industriewerke Karlsruhe-Augsburg Aktiengesellschaft Winder for yarn and the like
US4099680A (en) * 1975-03-07 1978-07-11 Industrie-Werke Karlsruhe-Augsburg Aktiengesellschaft Winder for yarn and the like
US4141513A (en) * 1978-05-01 1979-02-27 Industrie-Werke Karlsruhe Augsburg Aktiengesellschaft Device for accelerating yarn winder chucks
US4141514A (en) * 1978-04-13 1979-02-27 Industrie-Werke Karlsruhe Augsburg Aktiengesellschaft Standby chuck operating mechanism
US4166587A (en) * 1978-06-01 1979-09-04 Industrie-Werke Karlsruhe Augsburg Aktiengesellschaft Method and aparatus for transferring yarn on a nearly full package to an empty bobbin
US4186890A (en) * 1977-06-24 1980-02-05 Industrie-Werke Karlsruhe Augsburg Aktiengesellschaft Mechanism and method for transferring yarn from a full package to an empty bobbin
US4193557A (en) * 1974-11-13 1980-03-18 Saint-Gobain Industries Strand attenuation and winding apparatus
US4205800A (en) * 1977-03-23 1980-06-03 Saint-Gobain Industries Strand attenuation and winding apparatus
US4477033A (en) * 1981-10-15 1984-10-16 Windings, Inc. On-line winding machine
US4483490A (en) * 1982-04-27 1984-11-20 Maschinenfabrik Niehoff Kg Individual coil winder with automatic coil change
US4491282A (en) * 1981-08-20 1985-01-01 Neumunstersche Maschinen- und Apparatebau Gesellschaft mbH (Neumag) Winding machine for automatic spool exchange
DE3339406A1 (de) * 1983-10-28 1985-05-09 Windings Inc., Goldens Brigde, N.Y. Verfahren und vorrichtung an einer spulmaschine
US4801104A (en) * 1987-10-05 1989-01-31 E. I. Du Pont De Nemours And Company Linear travel windup
US4856722A (en) * 1987-10-08 1989-08-15 Basf Fibres, Inc. Apparatus and process for automatically taking up a continuously supplied yarn
US7434820B1 (en) 2006-11-15 2008-10-14 Nicole Aliseo Yarn Storage Apparatus

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2143548A (en) * 1983-07-21 1985-02-13 Hollingsworth Yarn end catching
JPS6097167A (ja) * 1983-10-31 1985-05-30 ワインディングズ．インク． 可撓性材料の巻取方法及び巻取機
JPS60171229U (ja) * 1984-04-21 1985-11-13 秦　勇 携帯用魚焼器

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US3310247A (en) * 1964-10-26 1967-03-21 Du Pont Continuous yarn windup mechanism
US3385532A (en) * 1966-12-21 1968-05-28 Du Pont Yarn winding apparatus
US3428266A (en) * 1967-04-25 1969-02-18 Du Pont Yarn winding apparatus
US3561688A (en) * 1964-01-29 1971-02-09 Toyo Rayon Co Ltd Yarn transfer method in the windup operation
US3628741A (en) * 1968-09-11 1971-12-21 Karlsruhe Augsburg Iweka Device for winding textile threads
US3697007A (en) * 1970-10-06 1972-10-10 Northrop Carolina Inc Winding apparatus
US3708133A (en) * 1971-07-16 1973-01-02 Du Pont Apparatus for winding yarn
US3717310A (en) * 1969-10-23 1973-02-20 Heberlein Patent Corp Transfer tail traction mechanism
US3761029A (en) * 1972-07-21 1973-09-25 Du Pont Yarn winding apparatus

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Publication number Priority date Publication date Assignee Title
US3561688A (en) * 1964-01-29 1971-02-09 Toyo Rayon Co Ltd Yarn transfer method in the windup operation
US3310247A (en) * 1964-10-26 1967-03-21 Du Pont Continuous yarn windup mechanism
US3385532A (en) * 1966-12-21 1968-05-28 Du Pont Yarn winding apparatus
US3428266A (en) * 1967-04-25 1969-02-18 Du Pont Yarn winding apparatus
US3628741A (en) * 1968-09-11 1971-12-21 Karlsruhe Augsburg Iweka Device for winding textile threads
US3717310A (en) * 1969-10-23 1973-02-20 Heberlein Patent Corp Transfer tail traction mechanism
US3697007A (en) * 1970-10-06 1972-10-10 Northrop Carolina Inc Winding apparatus
US3708133A (en) * 1971-07-16 1973-01-02 Du Pont Apparatus for winding yarn
US3761029A (en) * 1972-07-21 1973-09-25 Du Pont Yarn winding apparatus

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4034923A (en) * 1973-04-26 1977-07-12 Industriewerke Karlsruhe-Augsburg Aktiengesellschaft Winder for yarn and the like
US4193557A (en) * 1974-11-13 1980-03-18 Saint-Gobain Industries Strand attenuation and winding apparatus
US4007883A (en) * 1974-12-09 1977-02-15 Rhone-Poulenc-Textile Simultaneous bobbin winding station
US4099680A (en) * 1975-03-07 1978-07-11 Industrie-Werke Karlsruhe-Augsburg Aktiengesellschaft Winder for yarn and the like
US4205800A (en) * 1977-03-23 1980-06-03 Saint-Gobain Industries Strand attenuation and winding apparatus
US4186890A (en) * 1977-06-24 1980-02-05 Industrie-Werke Karlsruhe Augsburg Aktiengesellschaft Mechanism and method for transferring yarn from a full package to an empty bobbin
US4141514A (en) * 1978-04-13 1979-02-27 Industrie-Werke Karlsruhe Augsburg Aktiengesellschaft Standby chuck operating mechanism
US4141513A (en) * 1978-05-01 1979-02-27 Industrie-Werke Karlsruhe Augsburg Aktiengesellschaft Device for accelerating yarn winder chucks
US4166587A (en) * 1978-06-01 1979-09-04 Industrie-Werke Karlsruhe Augsburg Aktiengesellschaft Method and aparatus for transferring yarn on a nearly full package to an empty bobbin
US4491282A (en) * 1981-08-20 1985-01-01 Neumunstersche Maschinen- und Apparatebau Gesellschaft mbH (Neumag) Winding machine for automatic spool exchange
US4477033A (en) * 1981-10-15 1984-10-16 Windings, Inc. On-line winding machine
US4483490A (en) * 1982-04-27 1984-11-20 Maschinenfabrik Niehoff Kg Individual coil winder with automatic coil change
DE3339406A1 (de) * 1983-10-28 1985-05-09 Windings Inc., Goldens Brigde, N.Y. Verfahren und vorrichtung an einer spulmaschine
US4801104A (en) * 1987-10-05 1989-01-31 E. I. Du Pont De Nemours And Company Linear travel windup
US4856722A (en) * 1987-10-08 1989-08-15 Basf Fibres, Inc. Apparatus and process for automatically taking up a continuously supplied yarn
US7434820B1 (en) 2006-11-15 2008-10-14 Nicole Aliseo Yarn Storage Apparatus

Also Published As

Publication number Publication date
NL7404776A (enrdf_load_stackoverflow) 1974-10-29
JPS5012353A (enrdf_load_stackoverflow) 1975-02-07
JPS5241383B2 (enrdf_load_stackoverflow) 1977-10-18
IT1009979B (it) 1976-12-20
GB1443848A (en) 1976-07-28
CH568234A5 (enrdf_load_stackoverflow) 1975-10-31

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