US3184174A - Yarn-spool winding machine with automatic spool-exchanging device - Google Patents

Yarn-spool winding machine with automatic spool-exchanging device Download PDF

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US3184174A
US3184174A US289049A US28904963A US3184174A US 3184174 A US3184174 A US 3184174A US 289049 A US289049 A US 289049A US 28904963 A US28904963 A US 28904963A US 3184174 A US3184174 A US 3184174A
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yarn
spool
core
winding
lever
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Furst Stefan
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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

  • My invention relates to machines for rewinding coils of yarn, for example spinning cops, into larger yarn packages of a desired shape and size, such as cross-wound spools of the types called cheeses and cones.
  • 1y invention concerns improvements of machines according to my Patent 3,092,340 for Yarn-Package Winding Machine, assigned to the assignee of the present invention.
  • Such machines are equipped with a knotting device for tying the yarn from a take-up spool together with the yarn from the yarn-supply coil in the event of yarn breakage or substitution of an exhausted coil, and also comprise automatic means for removing a fully wound yarn package from the winding location and substituting it by a new spool core to receive the next package.
  • I provide the machine with a sensing member responsive to the presence of a residual yarn winding on the new core, and connect the sensing member with control means which operate to either prevent or permit attaching to the core the yarn coming from the supply coil, depending upon whether the sensing member ascertains the absence or presence of a residual yarn winding respectively.
  • the sensing member on the supply device or magazine which passes the new cores to the winding location in substitution for a completed take-up spool, so that, prior to commencement of the take-up spool exchange, the automatic mechanisms of the machine are already prepared if the next core to be placed into winding position still carries a remainder winding.
  • the machine is provided with a normally inactive Zyarnsevering device which, when actuated, interrupts the yarn on its path from the supply coil to the previously filled take-up spool under control by the above-mentioned sensing member in response to presence of a remainder winding on the new spool core next to be inserted into the winding location.
  • a normally inactive Zyarnsevering device which, when actuated, interrupts the yarn on its path from the supply coil to the previously filled take-up spool under control by the above-mentioned sensing member in response to presence of a remainder winding on the new spool core next to be inserted into the winding location.
  • the device normally operating to attach the yarn to the newly inserted core no longer encounters the yarn on its normal path, and hence remains ineffective.
  • the yarn guard will respond to the absence of yarn on the normal yarn path between supply coil and take-up spool, thus initiating the operation or" the yarn-end seeking and knotting devices which tie the yarn from the supply coil together with the free end of the yarn coming from the remainder winding on the spool core just inserted.
  • the above-mentioned severing device is electrically controlled, preferably by means of an electromagnet having an energizing circuit connected with a control switch actuable by the sensing member.
  • another switch is serially connected in the control circuit and closed in dependence upon attainment of a given diameter of the yarn package being wound. switch then prevents operation of the severing device as long as the yarn package is not completed.
  • the severing device is preferably mounted between the yarn tensioner and the take-up spool so that the yarn coming from the supply coil is still held in the yarn tensioner and can be seized by the gripper members of the yarn seeking and knotting devices at a location between supply coil and yarn tensioner.
  • the clamping device for the spool cores is provided with a centering device which, regardless of the thickness of any remainder winding on the core to be clamped, provides for accurate adjustment of the core with respect to the journalling axis of the spool-holding clamps.
  • Such a centering device is not only of advantage in cases where an automatic winding machine is to be operated with new spool cores that may or may not have remainder windings and are therefore provided with a sensing member for response to the presence of such remainder windings, but is gen-.
  • journal-clamping device for the take-up spools is considerably improved by providing it with a centering device which, according to the invention, determines the thickness of the winding on the core to be clamped and adjusts the clamping device to the center of the spool core.
  • the centering device preferably consists of a feeler lever pivotally mounted on the clamping device and having a tip that abuts against the core being inserted into the The second clamping device. This assures a reliable adjustment of the clamping device to the center of the core.
  • the cam mechanism for controlling the above-described component devices be adapted for sequencing them in such a manner that first the empty core is placed to the winding position and only thereafter the clamping device is moved toward the core to the clamping position. This has the consequence that the new cores must travel past the clamping device.
  • FIG. 1 is a schematic side elevation, partly in section, of a winding station which forms part of a multi-station winding machine.
  • FIGS. 2 and 3 relate to the same machine and show front views of its yarn-guiding drum and take-up spool assembly in different operating stages respectively.
  • FIG. 4 is a front view of a modified assembly generally corresponding to that of FIG. 2.
  • FIG. 5 is a lateral view of a modified spool-core magazine portion applicable in a machine otherwise corre sponding to that of FIGS. 1 to 4.
  • FIG. 6 shows in section an electromagnetically controlled spool clamping device which forms part of the machine according to FIG. 1;
  • FIG. 7 is an explanatory time-sequence or cam-curve diagram of the same machine.
  • the yarn F to be wound into a yarn package passes from a supply coil A through a yarn tensioner T and past a yarn guard 37 to a yarn-guiding drum 22 and thence onto the core of a take-up spool 21.
  • a mandrel (not shown) for accommodating the supply coil A in proper position, as well as the tensioner T, the yarn guard 37 and the bearings for the shaft of the guid ing drum 22 are mounted on the rigid frame and supporting structure of the machine composed of mounting plates, such as the one denoted by 201, and interconnecting tubular beam structures 202, 203 and 204.
  • the takeup spool 21 is rotatably and removably mounted on a spool holder (FIGS.
  • the yarn-guiding drum 22 is driven from a friction roller 16 which is kept in continuous rotation at constant speed as long as the machine is in operative condition.
  • Driving force is transmitted from friction wheel 16 to drum 22 by means of an intermediate friction roller 25 linked to a bell-crank lever 23 which is pivoted to the frame structure of the machine.
  • the lever 23 is actuated by a control rod 41 to place the intermediate roller 25 into and out of coupling engagement between the driving roller 16 and the drum 22.
  • the friction roller 25 is in active engagement with roller 16 and drum 22 during normal winding operation but is removed therefrom, under control by the rod 41., in the event the yarn F is absent at the location of the yarn guard 37, which absence may be due to yarn breakage or to depletion of the supply coil A.
  • Such events therefore, cause the drum 22 and hence the take-up spool 21 to be stopped until the yarn breakage is mended by knotting the broken ends together, or by first exchanging a full coil for the depleted coil A and thereafter knotting its yarn end together with the end coming from the take-up spool 21.
  • the drum 22 is also stopped by disengagement of roller 25 during exchange of the take-up spool.
  • a damper rod 102 connected to a dash pot D.
  • a disc 103 which cooperates with a lever 104 biased by a spring 1040 so as to somewhat compensate the weight of the spool-holder assembly in order to prevent excessive pressure between spool 21 and drum 22.
  • the lever 104 carries an entrainer pin engaging an arcuate slot in a cam segment 105 which is spring-biased clockwise relative to the lever 104 so that normally the upper end of the slot in segment 105 abuts against the pin of lever 104.
  • segment 105 is normally entrained by lever 104 when the latter turns counterclockwise as the rod 102 and the disc 103 are being lifted by the spool holder 20 while the package of yarn being wound onto the spool 21 increases its diameter.
  • the segment 105 is engageable by a control lever 106 which is pivoted to the frame structure of the machine at 106:; and is biased by a spring 141 for counterclockwise rotation. Normally, however, the upper end of lever 106 abuts against the peripheral cam portion of the segment 105 so that the lever 106 remains in the position 106' shown by a dotand-dash line.
  • cam 105 turns counterclockwise, until lever 106 is released and the spring 141 snaps the lever 106 counterclockwise to the full-line position shown.
  • an arm 107 of lever 106 places its hook-shaped end 109 beneath a lever 45, thus preventing the lever 45 from continuing an oscillating motion normally imparted thereto by means of a linking rod 46.
  • the lever 45 is pivoted to a drive-control lever 31 which in turn is pivoted to the stationary frame structure of the machine and whose upper end is linked by the above-mentioned control rod 41 to the bellcrank lever 23.
  • the linking rod 46 is acted upon by a dog member 11, which, during operation of the machine, is kept reciprocating on its shaft and imparts to the lever 45 an oscillating motion for testing the operating condition of the winding station to effect stoppage of the winde, res, 1 v4 ing operation upon occurrence of yarn breakage or supply-coil depletion or completion of a take-up spool.
  • the yarn guard 37 is likewise held arrested by the lever and cannot turn clockwise about its pivot. Normally, the yarn guard 37 is biased by gravity or by a spring (not shown) to turn clockwise into feeler contact with the yarn F normally extending under proper tension between the tensioner T and the guiding arm 22. When due to yarn breakage or depletion of the supply coil A the yarn F is absent at the location of the yarn-guard tip, the yarn guard 37 will deflect clockwise from the illustrated position.
  • Machines of this kind are preferably equipped with automatic yarn-knotting and supply-coil exchanging devices, for example such as those described and illustrated in my US. Patents No. 2,733,870, No. 3,077,311, No. 3,078,054, or No. 3,033,478, all assigned to the assignee of the present invention. Since the design and operation of the knotting and coil-exchanging devices is not essential to the present invention, it will suffice to mention that the operation of these devices is released by the deflection of the yarn guard 37 from the normal position occupied when the yarn is under proper tension at the location of the guard tip.
  • the guard 37 cannot respond to any simultaneous occurrence of yarn breakage or supply-coil depletion and cannot put the auxiliary knotting and coil-exchanging devices into operation during the period in which the completed spool is being removed and substituted by a new core.
  • the yarn F is again under proper tension so that the yarn guard 37, when released by the oscillating lever 45, can again initiate a knotting or supply-coil exchanging operation in consequence of any subsequent yarn breakage or depletion of coil A.
  • the cam-controlled lever 1% has another arm E42 which is linked by a connecting rod 143 with a trigger detent 144 cooperating with one cam disc 145 of a group of coaxially joined cams rotatably seated on a cam shaft 146.
  • the shaft Ltd is continuously driven at constant speed and tends to rotate the cam group counterclockwise through a slip clutch (not shown) which permits continued rotation of shaft 14d when the cam is kept arrested by engagement of the detent 144 with a notch 139 in cam 14-5.
  • the cam 145 carries a dog pin for cooperation with the nose 189 of the detent 14 so as to turn the detent clockwise about its pivot to the illustrated position when the pin 18%, during the last portion of the counterclockwise rotation of earn 145, is engaged by the nose 189.
  • Another cam of the group located coaxially behind cam 145, cooperates with a follower 148 (FIG. 1, curve 0 in FIG. 7) which is biased by a spring 175 (MG. 1) into engagement with the cam and acts upon a control rod 14? through a helical compression spring fill, another cam 14-7 (FIG. 1 and curve in in FIG.
  • the control rod has its upper end linked to an arm of the spool-holder frame (FIG. 1).
  • the bellcrank lever 152 is connected by a linking rod 153 with a louble-arrn lever iii i which turns about the pivot shaft M of the spool-holder frame 29 and carries at its upper end a spool-core magazine 1155 (FIGS. 1 to 4).
  • the outlet opening of the magazine is normally closed partially by a flap member 155 (FIG. 1) pivoted at 156a and biased to closing position by a spring 157.
  • the closing flap 156 can be opened in opposition to the force of spring 157 to such an extent that one empty core S at a time can be removed from the magazine.
  • the magazine corresponds to that shown in FIGS. 1 and 16 of Patent 3,692,340.
  • a lug on the swing arm 16% is engageable with a yarndeflector 1'77 which has a yarn-guiding arm 182 and is rotatable on a fixed vertical pivot pin 18%) secured to a spool supporting sheet 13%.
  • a spring 179 mounted on pin 1S6 biases the deflector 177 to keep the yarnguiding arm 132 turned to the rear (i.e. in the direction away from the observer in FIG. 1.) as long as the swing arm 1.6 5 is in normal position during winding operation.
  • the swing arm 168 turns clockwise to the position illustrated in FIG.
  • the yarn-guiding arm 132 is moved to its illustrated forward position and then entrains the yarn from the normal path to a position laterally of the completed yarn package so that the yarn end is placed out of the way and cannot interfere with the insertion of a new core from the magazine 1555.
  • the location of the laterally deflected yarn is such that, when thereafter the spool journalling frame 29 is lowered, the yarn, held by the deflector 182, becomes clamped between the newly inserted spool core and one or" the clamping members of the clamping device still to be described.
  • the yarn connection with the previously completed spool is torn, and the yarn is thereafter Wound upon the newly inserted core.
  • swing arm 168 Pivotally mounted to an upper extension of swing arm 168 is an entrainer 169 biased by a spring 17!) and provided with a cam contour 1'72. at its hook-shaped end. Counterclockwise movement of swing arm 16% causes the active end of the entrainer to catch behind the core ends 173 of the filled take-up spool and then pull the spool from the winding location onto the supporting sheet member 18% mounted on the frame structure Ztll.
  • the sheet has a concave portion to receive the dotted spool, thus preventing the spool from inadvertently rolling back to the winding location.
  • the spool journalling frame 2t is gradually lifted counterclockwise about its pivot Mil, and the control rod 14) is then gradually pushed downward through its seating bore in the follower 48 under compression of the spring fill.
  • the cam follower 14-8 is actuated (curve 0 in FIG. 7) to fully compress the spring 15th
  • the journalling frame does not immediately drop toward the guide drum 22 but remains in lifted position until the follower 14S returns to its normal position.
  • the machine is equipped with an electromagnetic core clamping device 6115. (FIGS. 1 to 3) in combination with cam-controlled clamp-operating means and a feeler-controlled yarn-severing device. These will be described presently.
  • the electromagnetic spool-core clamping device separately shown in HQ. 6 is generally similar to those shown in the copending application Serial No. 27,403, filed May 6, 1960, now Patent No. 3,131,885 assigned to the assignee of the present invention.
  • the clamping device comprises two clamping members 611a, 6111; (FIGS. 2, 6) which have respective dowel projections of reduced diameter to engage coaxially into the hollow of a tubular spool core 191.
  • the member 611b is journalled at a fixed location in the journalling frame 2%
  • the member 611a is axially displaceable in frame 26 and normally pressed to core-engaging position by a helical pressure 620 acting upon a magnetizable pin 622 which forms an armature for a magnet or solenoid coil 621.
  • a helical pressure 620 acting upon a magnetizable pin 622 which forms an armature for a magnet or solenoid coil 621.
  • the above-mentioned cam group on shaft 146 (FIG. 1) comprises another coaxial cam disc 145a (FIG. 1 and curve e in FIG. 7) which, when performing its single-turn rotation, operates the actuator 602 of an electric switch 661, thus closing the circuit of a currrent source 663 which energizes the electromagnet of the clamping device and thereby opens the device for releasing a full spool from the winding location on journalling frame 20.
  • FIG. 1 shows cam 1452 in normal position at standstill.
  • the cam groups has just been released to commence a counterclockwise rotation indicated by an arrow.
  • the contour of cam 145.2 is such that the clamp-releasing circuit is closed by switch 661 immediately after commencement of the cam rotation and hence of the spool exchange, and the spool-core clamping device is then kept open during the major portion of the exchange-operation period, namely until after a new spool core has been placed from magazine 155 between the two dowel members of the clamping device.
  • FIG. 7 This is apparent from the example of a suitable time sequence shown in FIG. 7 which may also serve as a straight-line development of the respective cam contours and relates to a single cam rotation from to 369 (along the abscissa).
  • Curve e corresponds to the contour of cam 1452 and indicates that the clamping device is opened shortly after the start of the cam rotation.
  • the diagram also indicates the corresponding motion (curve d) of the entrainer or doffer 169 which catches behind the core ends of a full spool before the clamp opens and then removes the spool before the magazine 155 is lowered upon the yarn-guiding drum 22 (curve m). Thereafter, the clamping device on arms 20 is centered (curve 0) relative to the tubular core now resting upon the drum.
  • FIG. 7 also exemplifies by curve 1 an operation of feeler and cutter devices still to be described.
  • a feeler 604 (FIGS. 1, which, in the event a residual amount of yarn R has remained wound-up on the core, closes a switch 605 in the circuit between a current source 606 and an electromagnet 697 for actuating a yarn-severing device 608.
  • the normally open switch 605 is connected in series with another normally open switch 609 whose actuating lever 610 closes the switch 669 as soon as a take-up spool is filled and the lever 106 has snapped to its full-line position.
  • the yarn cutter 608, therefore, is actuated only if the feeler 604 has sensed a residual yarn winding R on a core to issue from the magazine and if the levers 106, 610 have responded to completion of a spool. Neither of these two conditions is alone sufficient to cause severance of the yarn by excitation of magnet 607.
  • any other known and suitable sensing member can be employed for response to the presence of a yarn winding remaining on the tubular cores in the magazine.
  • a feeler lever as shown on the drawing, a gliding feeler may be used.
  • Applicable also are photoelectric sensors 8 operating in response to interruption of a light beam impinging upon a photocell or responsive to change in reflection of light. Utilizable for the same purposes is the change in dielectric constant, capacitance or other electrical parameters resulting from the presence of the yarn remainder on the spool cores.
  • the thickness of a yarn winding remaining on a core may differ from core to core.
  • the clamping device 611 is provided with a centering device which takes into account the particular thickness of such remainder winding.
  • the centering device comprises a feeler lever 612 which is pivotally mounted at 613 upon the clamping device so that the feeler tip can rest against the adjacent end of the core 191.
  • the feeler lever is pivoted at 613 on a mounting bracket or angle piece at such a location that the feeler tip can move clockwise (FIG. 2) in the lowering direction of the magazine.
  • a weight 614 which may form an integral part of the feeler member, normally turns the feeler lever 612 clockwise until the weight 614 rests upon the mounting bracket 615.
  • the feeler tip turns counterclockwise and drops back to the illustrated position as soon as the core has'fully passed by the feeler.
  • the spacing between the tip of the feeler lever 612 and the center axis of the clamping device 611 corresponds to the diameter of the core.
  • the feeler lever will hold the clamping device and the journalling frame 20 farther away from the guide drum 22 than when the winding is thin or there is no winding at all, thus limiting the downward travel of the frame 20 to the correct amount required for accurate centering.
  • the feeler lever 612 frictionally glide on the core 191 during the entire subsequent spool-winding operation.
  • the clamping device 611 it is preferable to have the clamping device 611, although it clamps and journals the core on both sides, only at one side provided with the above-described centering feeler 612, and to also provide an axially displaceable clamping dowel 611:: (FIG. 6) only on this one side, whereas the opposite dowel member 61112 of the clamping device is not axially displaceable in normal operation.
  • FIG. 2 shows a stage reached immediately after lowering of the magazine 155. At this moment the tubular core 121 with a remainder winding R rests upon the yarn guiding drum 22.
  • the clamping device 611 is already centered upon the core 191. As soon as thereafter the clamping member 61111 shifts to the left for firmly securing the core, the entire core is displaced toward the left to the position shown in FIGS. 3 and 6. As apparent from FIG. 3, the feeler 612 is now somewhat spaced from the core 121 and cannot rub or glide on the core during the subsequent winding operation.
  • FIG. 4 relating to a somewhat modified design of the magazine and centering devices, is represented at the same stage as FIG. 2.
  • the magazine according to FIG. 4 accommodates a number of tubular cores of which only the core denoted by 191a carries a remainder winding R.
  • the feeler lever 612 will abut against the respective cores 191 in the lowermost position, even if two cores without remainder windings are adjacent to each other, as is shown in FIG. 4 for the two lowermost cores, the ends of the cores 191 are provided with a peripheral step or shoulder 19117. This always provides for a gap between two adjacent cores at the teeler tip of the feeler lever 612.
  • the clamping device on may be provided with a latch that arrests it in the illustrated lowered position in the event the adjacent core does not have a remainder winding.
  • the feeler lever 612 does not perform a centering action but enters into operation only if, due to the presence or" a remainder winding on one or both of these cores, a gap exists between two adjacent cores.
  • a core-supplying device or magazine may either convey a single core at a time to the Winding location (FIGS. 2, 3) or it may contain a number of cores PEG. 4) or" which only the lowermost one is inserted at a time into the clamping device.
  • a teeler lever for centering the clamping device upon the axis of the core to be clamped, it may happen with a magazine for a plurality of cores that the feeler lever will not abut against the lowermost core but against one of the upper cores.
  • a guide bar or rail is preferably applied for releasing the feeler lever only when it reaches approximately the height of the lowermost core. The bar then blocks the feeler lever as long as there is the possibility that it may abut against a core other than the lowermost one.
  • a guide bar of this kind is shown at 616 in FIG. 4.
  • the rail is stationarily mounted along the path travelled by the feeler member 612 when the journalling frame 29 with the clamping device 611 is lowered past the magazine 1S5 toward the guiding drum 22.
  • the feeler lever 614 has a pin 613 which engages the guide rail 61o during the downward travel and thereby turns the feeler lever about its pivot 613, thus rendering it inactive until the tip of the feeler lever 612 closely approaches the illustrated position where it is at the height of the lowermost core and can place itself against that core to properly center it with respect to the axis of the clamping members.
  • the core 191 is shifted to the left (FIGS. 2, 3, 6) during clamping operation so that the tip of the feeler lever 612 does not glide on the core 191 during the entire duration of the following winding run.
  • the core 191 can thus be displaced relative to the magazine 155.
  • this has the consequence that the core 1?]; can no longer be covered with a yarn winding over its entire length.
  • the supply magazine for the cores can be mounted for displacement in the direction of the core axes. Then, when the core 191 is being clamped fast between the clamping members, not only the lowermost core but the entire magazine 155 is shifted slightly toward the left.
  • FIG. shows a modified magazine device for supplying new cores with and without remainder winding, containing only one such core at a time.
  • the sensing member sea for re sponse to winding remainders may be mounted above the core as illustrated.
  • the disc 1673 When the take-up spool is completely filled, the disc 1673 has reached a position in which it causes the segment to release the control lever res which then drops away from the periphery of segment lilo and snaps counterclockwise uncler the action of spring 141. The lever 1% then shifts the linking rod 143 to the left and releases the detent 144 from cam 1451.
  • the cam set can now rotate together with the shaft 146 under the driving action of the slip clutch (not shown).
  • the swing arm 168 At the beginning of a single full revolution of the cam set, the swing arm 168 is turned counterclockwise (FIG. 1) by spring 175.
  • the completed yarn package can remain until it is removed by hand or suitable conveying means within the period of time during which the next yarn package is being wound.
  • the cam set acting through the follower lever 152 and the linking rod 153, moves the magazine lever 154 clockwise (FIG. 1) about its pivot 14%, thus shifting the core magazine downwardly (curve m in FIG. 7), until the lowermost core in the magazine 155 touches the guiding drum 22.
  • the cam-follower lever 143 is moved clockwise and causes the spool-journalling frame 2%) to move downwardly toward the lowermost position shown by a dash-and-dot line in MG. 1 (curve 0 in FIG. 7) until centering of the core by feeler lever 612 (FIGS. 2 to 4) takes place.
  • the laterally deflected yarn end from the completed spool 21' is located at a point where the next spool core will subsequently be clamped by the clamp member olla (FIG. 6).
  • the clamping device is now closed (curve 6 in FIG. 7) by opening or" switch dill (FIG. 1).
  • the magazine 155 moves up (curve m in FIG. 7).
  • the lowermost spool core now clamped fast in the spool holder, passes out of the outlet opening of the magazine while temporarily forcing the flap 156 to the opening position.
  • the fiap 156 thereafter closes the magazine so that only the lowermost core is removed therefrom, and the magazine moves up to the position illustrated in FIG. 1.
  • the winder drive is switched on under control by the dog pin 188 on cam 145a which acts upon the nose 189 of the detent 144 and shifts the linking'rod 143 toward the right.
  • This returns the control lever 106 to the normal operating position shown by dot-and-dash lines.
  • the weight-relieving lever 104 and the segment 105 have both turned counterclockwise about pivot 104a so that the upper end of lever 106 now rests against the peripheral contour portion of segment 105.
  • the force of spring 141 cannot turn the lever 1% to shift the rod 143, and a release of the detent member 144 is prevented.
  • the oscillatable lever 45 is released from the latch hook 109 and can resume its oscillatory motion. This has the consequence that that the drive-control lever 31, during its subsequent oscillating motion about its pivot, acts through the control rod 41 to place the intermediate roller into frictional engagement with the driving roller 16 and the guiding drum 22, so that the winding operation is again commenced.
  • the yarn end P is torn, thus separating the yarn of the new spool from the spool previously completed.
  • a sharp edge may be provided at the yarn-guiding portion 182 of the deflector lever 177, so that the pull exerted by the winding operation upon the yarn causes it to be forced against the edge.
  • the yarn guard 37 biased for clockwise motion, is arrested by the lever to prevent the guard from putting the knotting or supply-coil exchanging devices of the machine into operation in response to any slackening of the yarn as may occur during the dofling and spool-exchanging interval.
  • the particular design of the knotting and supply-coil exchanging devices are not essential to the present invention, any suitable known design being applicable as long as its operation is controlled or initiated by the deflection of the yarn guard 37.
  • the knotting and coil exchanging devices are of the type in which these devices are combined to form a travelling servicing unit which sequentially passes by the winding stations of the multi-station machine and is caused to stop and operate at a particular winding station only if the yarn guard in that station has become deflected in response to trouble.
  • travelling servicing units suitable for the machine according to my present invention are illustrated and described in my Patents No. 3,033,478, No. 3,067,962, No. 3,077,311, and No. 3,078, 054.
  • the above-described machine according to the invention may be provided with a travelling servicing unit identical with the one illustrated and described in Patent No. 3,033,478.
  • a travelling servicing unit identical with the one illustrated and described in Patent No. 3,033,478.
  • the components of the spool-exchanging apparatus according to the present invention must be arranged accordingly; but the coaction of the apparatus with the knotter operating mechanisms of the travelling unit will be readily apparent from the use of identical reference numerals in FIG. 1 of the present disclosure and in FIGS. 1, 2, 3 of the patent. This applies, inter alia, to all reference numerals between 20 and 51,
  • the dog 11 on shaft 8 (FIG. 1) is continuously reciprocated by a crank shaft 8. As described, this oscillating motion is transmitted by rod 46 to the lever 45.
  • the right arm 47 of lever 45 (FIG. 1) forms a lug 48 which, when the yarn guard 37 is in the illustrated position of normal operation, can catch behind the upper portion of the yarn guard when ever, during oscillating movement of lever 45 about its pivot, the arm 47 is in lowermost position.
  • the lug 48 during its clockwise stroke, will place itself upon the tip of the yarn guard 37.
  • the winding operation in a machine according to the present invention is started only after the yarn end from the remainder R on a newly inserted core is tied together with the yarn end coming from the supply coil A. Only then is the yarn F again tautened between tensioner T and drum 22, thus holding the yarn guard 37 in the illustrated position required for the drive control lever 31 to put the winder drive in operation.
  • a yarn-winding machine comprising a winding mechanism having a spool-core jour-nalling means for accommodating a take-up spool to be wound, a coresupplying exchange mechanism for substituting a new core for a full spool on said journalling means, means for supplying yarn to be wound on said core, means for at tachment of the yarn to a new core preparatory to winding the yarn thereupon, a sequencing control device having releasing means responsive to completion of a spool and being connected to said exchange mechanism and to said attaching means for controlling them normally to sequentially operate when a spool is completed, a sensing member responsive to presence of a remainder winding on the new core being substituted by said exchange mechanism, and control means connected to said sensing member and controlled thereby to prevent the yarn from being supplied to said attachment means when the new core has a remainder winding.
  • said exchange mechanism having core holding means movable toward and away from the core journalling location of said journalling means for passing a new core from said holding means onto said journalling means, and said sensing member being mounted on said core holding means for response to presence of a yarn winding on the new core in said holding means.
  • a yarn-winding machine comprising a winding mechanism having spool-core journalling means for accommodating a take-up spool to be wound, yarn-path forming means defining a given path for yarn to be wound from a supply onto the spool on said journalling means, a core-supplying exchange mechanism for substituting a new core for a full spool on said journalling means, means for attachment of yarn to a new core preparatory to winding the yarn thereupon, a sequencing control device having releasing means responsive to completion of a spool and being connected to said exchange mechanism and to said attaching means for controlling them normally to sequentially operate when a spool is completed, a sensing member responsive to presence of a remainder winding on the new core being substituted by said exchange mechanism, a normally inactive yarn severing device located at said yarn path and engageable with the yarn for severing the spool from the supply, and control means connecting said sensing member with said severing device and actuable by the completion of a s
  • said control means for said severing device comprising an electric control circuit having a first switch controlled by said sensing member and having a second switch operable independcntly of said first switch, said two switches being electrically interconnected for operating said severing device only when both said switches are actuated, said second switch being connected with said means responsive to spool completion whereby said severing device is in operative condition only during operation of said exchange mechanism.
  • said journalling means comprising a core clamping device engageable on axially opposite sides with a core to be journalled and controllable to release the core, a control mechanism responsive to a given maximum diameter of the spool wound onto the core and connected to said clamping device for controlling it to release the core when the spool on the core is completed; and a centering device mounted on said clamping device and engageable with the core to be journalled for centering it relative to said clamping device prior to closing of said clamping device.
  • a yarn-winding machine comprising a winding mechanism having spool-core iournalling means for accommodating a take-up spool being wound, a core-supply exchange mechanism for substituting a new core for a full spool on said journalling means, yarn-path means comprising a tensioner for yarn to be wound onto the spool core, means for attachment of yarn to a new core preparatory to winding the yarn thereupon, a sequencing control device having releasing means responsive to completion of a spool and being connected to said exchange mechanism and to said attaching means for controlling them normally to sequentially operate when a spool is completed, a sensing member responsive to presence of a remainder winding on the new core being substituted by said exchange mcchanism, a normally inactive yarn severing device mounted between said yarn tensioner and said journalling means, and control means connecting said sensing member with said severing device and actuable by the completion of a spool for causing said severing device to sever
  • a yarn-winding machine comprising a winding mechanism having a spool-core journalling means for accommodating a take-up spool being wound, said journalling means being movable, as said take-up spool is being rotatably wound, between a first position at which a new winding of the spool is initiated and a second position at which the winding of the spool is completed, said journalling means having a core clamping device engageable on axially opposite ends of a core to be journalled in said first position of said journalling means and controllable to release the core in said second position of said journalling means, a control mechanism responsive to a given maximum diameter of the spool wound onto the core and connected to said clamping device for controlling it to release the core when the spool on the core is completed; an exchange mechanism for substituting a completed spool by a new core, said exchange mechanism having core supply means adapted for accommodating cores containing a remainder winding of yarn, said control mechanism comprising sequencing means for advancing said core supply means
  • said centering device comprising a feeler lever pivotally rotatable on said clamping device and abuttable against the core to be centered.
  • said clamping device having two axially spaced dowel members for clamping the core between each other, one of said dowel members being mounted at a fixed location of said journalling means, said other dowel member being axially displaceable relative to said journalling means for clamping and releasing the core whereby the core is shifted axially toward said one dowel member when being clamped, said centering device having a feeler lever mounted on said clamping device near said other dowel member so as to become disengaged from the core when the core is being shifted during clamping.
  • said core supply means having a magazine structure adapted to simultaneously accommodate a plurality of cores, said centering device having a feeler lever pivotally rotatable on said clamping device and abuttable against the core to be centered, and a guide rail engageable with said feeler lever during a portion of the advancing travel of said core supply means for maintaining said lever deflected from the cores in said supply means during said travel portion, whereby said feeler lever is released by said rail for centering operation only when said lever is close to the core to be centered.

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  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
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US289049A 1962-06-22 1963-06-19 Yarn-spool winding machine with automatic spool-exchanging device Expired - Lifetime US3184174A (en)

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DER32971A DE1288493B (de) 1962-06-22 1962-06-22 Automatische Spulmaschine

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US (1) US3184174A (de)
BE (1) BE633968A (de)
CH (1) CH414420A (de)
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3450358A (en) * 1965-12-17 1969-06-17 Toyo Boseki Automatic winder
US3476328A (en) * 1966-04-08 1969-11-04 Toyo Boseki Automatic doffing apparatus of automatic winder
US3512726A (en) * 1967-02-01 1970-05-19 Mann Maschf Chr Apparatus for changing winding-up bobbins on drawing frames and preparatory spinning machines
US3552666A (en) * 1967-07-27 1971-01-05 Palitex Project Co Gmbh Bobbin frame on upward twisting machines
US3791126A (en) * 1970-06-01 1974-02-12 Daiwa Boseki Automatic doffing apparatus
US3802637A (en) * 1971-05-29 1974-04-09 Schlafhorst & Co W Automatic winding machine and method of operation thereof
US3879925A (en) * 1973-12-05 1975-04-29 Toyoda Automatic Loom Works Rotary doffer in automatic doffing apparatus
US3971520A (en) * 1973-08-14 1976-07-27 Murata Kikai Kabushiki Kaisha Apparatus for doffing and inserting empty cores on an automatic winder
US4066218A (en) * 1974-09-27 1978-01-03 W. Schlafhorst & Co. Method and device for supplying empty conical coil cores to the individual winding stations of a textile machine
US4703900A (en) * 1985-04-05 1987-11-03 Murata Kikai Kabushiki Kaisha System of controlling the winding operation of automatic winders
CN102745552A (zh) * 2011-04-19 2012-10-24 村田机械株式会社 纱线卷绕装置以及批量交换方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7812719U1 (de) * 1978-04-26 1978-10-05 Hamel Gmbh, Zwirnmaschinen, 4400 Muenster Aufspulvorrichtung mit trennvorrichtung zum abschneiden des fadens bei erreichtem durchmesser der aufwickelspule
IT1133381B (it) * 1980-11-25 1986-07-09 Meccanica Di Precisione Spa Apparato per la completa automazione di un ciclo di bobinatura di fili,in particoalre di fili metallici
US5246178A (en) * 1989-12-12 1993-09-21 Savio S.P.A. Device for anchoring thread to the surface of a winding bobbin
IT1237883B (it) * 1989-12-12 1993-06-18 Roberto Badiali Dispositivo per ancorare il filo alla superficie del tubetto di avvolgimento

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3092340A (en) * 1959-10-24 1963-06-04 Reiners Walter Yarn-package winding machine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3092340A (en) * 1959-10-24 1963-06-04 Reiners Walter Yarn-package winding machine

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3450358A (en) * 1965-12-17 1969-06-17 Toyo Boseki Automatic winder
US3476328A (en) * 1966-04-08 1969-11-04 Toyo Boseki Automatic doffing apparatus of automatic winder
US3512726A (en) * 1967-02-01 1970-05-19 Mann Maschf Chr Apparatus for changing winding-up bobbins on drawing frames and preparatory spinning machines
US3552666A (en) * 1967-07-27 1971-01-05 Palitex Project Co Gmbh Bobbin frame on upward twisting machines
US3791126A (en) * 1970-06-01 1974-02-12 Daiwa Boseki Automatic doffing apparatus
US3802637A (en) * 1971-05-29 1974-04-09 Schlafhorst & Co W Automatic winding machine and method of operation thereof
US3971520A (en) * 1973-08-14 1976-07-27 Murata Kikai Kabushiki Kaisha Apparatus for doffing and inserting empty cores on an automatic winder
US3879925A (en) * 1973-12-05 1975-04-29 Toyoda Automatic Loom Works Rotary doffer in automatic doffing apparatus
US4066218A (en) * 1974-09-27 1978-01-03 W. Schlafhorst & Co. Method and device for supplying empty conical coil cores to the individual winding stations of a textile machine
US4703900A (en) * 1985-04-05 1987-11-03 Murata Kikai Kabushiki Kaisha System of controlling the winding operation of automatic winders
CN102745552A (zh) * 2011-04-19 2012-10-24 村田机械株式会社 纱线卷绕装置以及批量交换方法

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BE633968A (de)
CH414420A (de) 1966-05-31
GB1050882A (de)
DE1288493B (de) 1969-01-30

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