US3153513A - Apparatus for readying the yarn end portion of bobbins in textile machines - Google Patents

Apparatus for readying the yarn end portion of bobbins in textile machines Download PDF

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Publication number
US3153513A
US3153513A US144973A US14497361A US3153513A US 3153513 A US3153513 A US 3153513A US 144973 A US144973 A US 144973A US 14497361 A US14497361 A US 14497361A US 3153513 A US3153513 A US 3153513A
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Prior art keywords
cop
yarn
clamping
bunch
core
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Expired - Lifetime
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US144973A
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English (en)
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Furst Stefan
Raasch Hans
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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
    • B65H67/02—Arrangements for removing spent cores or receptacles and replacing by supply packages at paying-out stations
    • 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

  • United States Patent Our invention relates to textile machines for the fabrication or processing of yarn supplied in the form of bobbins or cops from which the yarn is unwound during operation of the machine.
  • the invention concerns cheese or cone winding machines in which the yarn coming from a number of successively supplied cops is rewound'in order to forma larger, cross-wound yarn package of cylindrical or frusto conical shape.
  • the various machine operations have been automated to a great extent.
  • This operation subjects the body of the cop to an axial force.
  • the other end of the cop core for example the head portion thereof, has been held anrested either by a clamp engaging the core from the outside, or by means of a clamping spring protruding into the central bore of the usually tubular core.
  • the automatic yarn-end seizing and'conveying means of the machine can then reliably operate to seize the starting end of the cop from the proper place and to convey it to the knotting device.
  • Such stop means may consist of two rods located at the conical portion of the body of yarn wound onto the core of the cop, these two rods being spacedfrom the axis of the cop a distance smaller than the largest diameter of the body of yarn. As a result, the cop cannot become pushed through the space between the two rods under the effect of the axial force needed for pulling a tip bunch oif the cop.
  • Stop means of the kind just mentioned are suitable only in cases where the cops being used are substantially uniform in diameter.
  • the bobbins being used are spinning cops as they come from the spinning machine, a uniform geometric shape of the cops is not always secured. This is because during spinning operation any stoppage of an individual spinning spindle, as may be due to yarn breakage, cannot be compensated.
  • the ring bank of the spinning machine progresses uniformly for all spinning spindles, regardless of whether one or more spindles are at standstill. Consequently, there occur grooves in the peripheral surface of the resulting spinning cops and also deformed conical shapes of the wound body of yarn on the cops, depending upon the time point and duration of spindle stoppage.
  • the stop means consisting of two aligned rods to engage the conical portion of the yarn body on the cop
  • a' deformed conical shape of that body would have the consequence that the cop may become displaced some distance in the axial direction when the tip bunch is being pulled off.
  • the gripper or other stripper tool which serves to pull the tip bunch off the cop would have to be adjusted to the most unfavorable conditions.
  • the most unfavorable condition is the one at which the cop nowhere attains the datum diameter over its entire axial length.
  • the above-mentioned tworod device therefore is satisfactory only for use with cops of uniform diameter but does not operate reliably when the cops to be used are substantially different in diametrical size.
  • the apparatus with holding means designed as movableclamping members that are engageable by inward motion with the wound body of yarn on the cop either at the cylindrical peripheral portion or at the conical portion of the yarn body.
  • the clamping members With elastic linings.
  • a reliable holding action can be secured by providing the clamping members or jaws of the holding device with soft-elastic linings or coverings.
  • such coverings consist preferably of an elastic hollow body filled with a compressible medium, preferably a rubber hose filled with air, so as to be capable of adapting itself to non-uniformities in the surface of the cop.
  • FIG. 1 shows schematically an axial view onto a cop clamping mechanism of the apparatus according to FIG. 2
  • FIG. 2 is a part-sectional lateral view of a cop-magazine and tip-bunch resolving apparatus.
  • FIG. 3 illustrates schematically a top view onto another embodiment of a cop clamping mechanism for a tip-bunch removing apparatus. 7
  • FIG. 4 is a partly sectional side elevation of a magazine and tip-bunch resolving apparatus of which the mechanism according to FIG. 3 forms part.
  • FIG. 5 is a plan view of the apparatus shown in FIG. 4.
  • FIG. 6 shows some of the components of FIG. 4 on a larger scale.
  • This type of bobbin usually called cop, comprises a tubular elongated core 1g which carries a body of yarn wound upon the core so as to leave the two core ends bare, these ends being the head portion and the tip 1e (FIGS. 3, 4).
  • such a cop is usually provided with a reserve winding or bunch consisting of a number of turns 'Wound upon one or both otherwise bare ends of the core.
  • the tip bunch is first resolved by pulling it over the tip with the aid of mechanical grippers or by an air current.
  • the amount of yarn previously stored in the bunch then becomes available as a relatively long starting end of the cop, and this yarn end can be conveyed to a knotting device or other fabricating devices by automatic means in a more convenient and more reliable manner than without the presence of such ayarn reserve.
  • the tip hunch is stripped off the cop by mechanical grippers or claws 27 which, when in operation, exert a pulling force axially toward the left upon the cop.
  • the cop has not yet reached its unwinding position but is still located in a ready position, or in a magazine, where it is freely supported beside one or more other cops.
  • an axial displacement of the cop under the stripping force acting axially upon it, the apparatus shown in FIGS.
  • 1 and 2 comprises two movable clamping members 3 and 3' which carry respective jaw plates 3a and 3'11 joined with hollow air-filled bers 2 and 2' are preferably bonded to the plates 3a and 3'a, for example by being vulcanized thereto.
  • the clamping members 3 and 3 are fastened on respective shafts 4 and 4' each of which carries a bell crank lever 5 or 5'.
  • a pull spring 6 extends between the two levers 5 and 5 and produces the clamping pressure for holding the cop between the clamping jaws.
  • the crank levers 5 and 5 are connected by respective linking rods 7 and 7' with a double-armed lever 8 which is pivoted at St: and articulately joined with a driving rod 9. When the rod 9 is moved in the direction of the arrow A shown in FIG. 1, the clamping jaws are opened and release the cop 1.
  • the cop 1 and one or more other cops of which only one is shown at 1' are horizontally positioned and stacked upon each other in a magazine 10 formed essentially by two U-shaped structures straddling the respective ends of each cop, as is apparent from the corresponding design of the magazine members 10a and 1% shown in FIG. 5.
  • the lowermost cop 1 is the one next to be discharged from the magazine in order to pass to some other location where its yarn is to be used.
  • This lowermost cop 1 is supported at its conical portion 1d on a roller 11 (FIG. 2), and at its head by a magazine lock 12.
  • the normally closed lock 12 is opened by displace ment of a control rod 13 as soon as a new cop is to be supplied to the winding station where the new cop is needed.
  • the lock 12 consists of a known mechanism comprising a cover 12a fastened on a lever 12c rotatable about a pivot pin 12b. Also fastened to the cover 12a is an angular lug 12e which, during displacement of the control rod 13 in the direction of the arrow B, turns toward the left so that the head of the cop will first drop upon the lug 12c.
  • the cover 12a prevents the next upper cop from dropping below the cover, whereas the lowermost cop is now released from lug Me and turns downwardly about the roller 11, and the cop can now drop into a trough 14 on which it slides downward to the winding station.
  • control rod 13 is preferably ac tuated from the winding machine or other equipment that is to be supplied with a new cop from the magazine. That is, the motion of rod 13 resulting in actuation of the lock 12 may be caused mechanically or eiect romag' netically by a signal issuing from the winding machine when the cop previously processed becomes depleted.
  • an apparatus according to the invention may be employed in lieu of the cop magazine 6 in a cheese winding machine according to the copending application of Walter Reiners, Serial No. 15,503, filed March 16, 1960, now U.S. Patent No.
  • control rod 13 may also be actuated by hand, for ex ample by a manual push button, the particular manner of operation being not essential to the present invention proper.
  • the magazine lock 12 is connected with an electric switch 15 which closes as soon as the lock 12 is actuated by displacement of the control rod 13 in the abovedescribed manner.
  • the switch 15 then completes an energizing circuit for an electric motor 16 which starts driving a cam shaft 17. While for simplicity a direct connection between switch 15 and motor 16 is shown, it will be understood that conventional control components may be interposed.
  • the shaft 17 carries three cams denoted by 18, 23 and 25 respectively.
  • a lobe 18' of cam 18 releases a switch arm 19 pivoted at 21 and biased by a spring 20 to turn clockwise.
  • the arm 19 closes a contact 22 which establishes a self-holding circuit for the motor 16 so that the motor 16 will continue running when the switch is again opened after resetting of the lock 12.
  • the contact 22 is opened by the cam lobe 18' only after the shaft 17 and its set of cams have completed a single full rotation so that the motor will then stop.
  • the cam disc 23 cooperates with the follower nose 24b of a lever 24 pivoted at 24a and linked to the abovementioned rod 9.
  • the follower 24b reaches a point where it travels from a wider diameter onto a smaller diameter of the cam 23. This causes the lever 24 to turn clockwise about its pivot 24a so that the rod 9, under the action of the pull spring 6 (FIG. 1) moves downwardly and causes closing of the clamping jaws 2, 3 and 2, 3.
  • the cam 25 on shaft 17 coacts with a follower lever 26 pivoted at 26a.
  • the follower point of lever 2s also passes onto a smaller cam diameter.
  • 27' are mounted on a stripper tool 27 which is displaceable in axial relation to the cop clamped between the clamping jaws and which is biased by a helical compression spring 28 in the direction toward the cop.
  • the follower lever 26 is linked at 261) to the stripper tool 27. Consequently, as soon as the follower lever 26 turns counterclockwise in accordance with its shift from a larger to a smaller cam diameter, the stripper tool 27 is released to move toward the cop under the action of spring 28, and the grippers 27' pass beneath the tip bunch of the lowermost cop 1.
  • the stripper tool 27 is tubular and is telescopically joined with the nozzle portion of a suction pipe 30 connected to a blower or other suitable source of negative air pressure.
  • the blower or other negative-pressure source is in operation as long as the device is in operative condition. Consequently the length of yarn pulled off the cop by the stripper device is sucked into the bore of the tubular stripper tool 27 and may also enter into the suction pipe 30, where the yarn is held by suction until the yarn is seized by suitable devices of the winding machine to be supplied with the new cop, and is then conveyed to the knotting mechanism of the machine.
  • the clamping means comprise members 31 and 32 which are pivoted on respective pins 31a, 32a and are placed against the conical surface of the yarn body under the action 'of spring force.
  • the engaging surfaces of clamping members31 and 32 are provided with a coating or covering of a material having a high coefiicient of The above-mentioned grippers 6 friction (,u) relative to the yarn.
  • Such covering r'nay consist of rubber, for example.
  • the cop By pulling the tip bunch In (FIG. 3) from the cop, the cop is subjected to an axial force P,, which causes at the clamping members 31 and 32 a force l normal to the arcuate contour of the clamping members.
  • the force P produces at the pivotally mounted clamping members a torque P .a which tends to open the clamping mechanism so that the cop would tend to glide through in the direction of the force P
  • a frictional force P p. will result at the clamping members and will produce a torque P,,.,u.b acting in opposition to the moment P a and hence tending to close the clamping mechanism.
  • FIGS. 3 to 6 is similar to that described above with reference to FIGS. 1 and 2, the same reference characters being applied to similar components respectively.
  • the electric motor 16 is put into operation to turn the shaft 17 with cams 18, 23 and 25 counterclockwise as indicated by an arrow D in FIG. 4.
  • the cam 18 then immediately closes a contact 22 which keeps the motor 16 energized after the lock-actuated switch 15 is opened.
  • the cam 23 causes the cop to be clamped under control by a lever 24 which is pivotally mounted at 24a and turned clockwise by a pressure spring 33 when the follower nose 24b of lever 24 passes from a larger onto a smaller diameter of the cam 23.
  • a cam disc 36 cooperating with a follower lever 37 pivotally mounted at 37.
  • the lever 37 has one arm extending into the magazine 19 for lifting the tip of the cop 1' located just above the lowermost cop 1. This has the advantage that, when the lock 12 is being opened, the lowermost cop 1 can more readily turn about the roller 11 to glide into the trough-shaped slide 14.
  • the lever 37 is biased against the cam disc 36 by means of a pull spring 38.
  • apparatus according to the invention can be modified in various respects.
  • the air-filled hose members 2, 2 at the clamping jaws 3, 3 can be substituted by bodies of foam material.
  • the individual control means for clamping the bobbins or cops and for removing the tip bunch or other yarn reserve, as well as the particular control means for operating the individual components in the proper time sequence, are illustrated and described only by way of example, it being readily possible to use other known and suitable mechanisms instead, or to use components of one illustrated embodiment in conjunction with components described and shown in conjunction with the other embodiment.
  • Such and other modifications will be obvious and available to those skilled in the art, upon a study of this disclosure, without departure from the essential features of our invention and within the scope of the claim annexed hereto.
  • An apparatus for readying the yarn end-portion of a cop having an axially elongated core and a wound body of yarn covering said core except the core ends with the yarn end-portion forming a bunch on at least one of said core ends, said yarn body having a conical surface portion tapering toward the bunch-carrying end of the cop core, said apparatus comprising supporting means for freely supporting the cop in resting position and oriented in a given axial direction, bunch stripping means mounted in coaxial relation to said axial direction and actuable upon the bunch in said direction to strip the bunch off the cop for resolving the end portion of the yarn so as to impose an axial force upon the cop, clamping means having two clamping members mounted at opposite sides of the cop and movable toward the cop into engagement with respective diametrically opposite surface portions of the yarn body when the cop is supported on said holding means, control means connected with said stripper means and with said clamping means for keeping said two clamping members in clamping engagement during operation of said stripper means to prevent axial displacement of the cop, said two

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  • Spinning Or Twisting Of Yarns (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
US144973A 1960-10-13 1961-10-13 Apparatus for readying the yarn end portion of bobbins in textile machines Expired - Lifetime US3153513A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER28887A DE1242130B (de) 1960-10-13 1960-10-13 Vorrichtung zum Abziehen des Fadenanfanges von Ablaufspulen

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US3153513A true US3153513A (en) 1964-10-20

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CH (1) CH394896A (de)
DE (1) DE1242130B (de)
GB (1) GB994467A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257083A (en) * 1963-03-26 1966-06-21 Reiners Walter Suction device for withdrawing a starting length of yarn from a textile coil
US3289958A (en) * 1963-07-15 1966-12-06 Reiners Walter Method and apparatus for removing the reserve winding of yarn coils
US4272034A (en) * 1978-06-21 1981-06-09 Sk "Pamukotex" Spool-charging device for automatic-winding-machine magazines
CN111410091A (zh) * 2020-03-30 2020-07-14 苏州梅塔摩尔通信科技有限公司 一种线盘的转移装置
CN111675039A (zh) * 2020-03-30 2020-09-18 苏州梅塔摩尔通信科技有限公司 一种收线机的自动换盘码盘方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018131882A1 (de) * 2018-12-12 2020-06-18 Saurer Spinning Solutions Gmbh & Co. Kg Spinnkopsaufnahmeeinheit und Spulmaschine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1666735A (en) * 1920-06-07 1928-04-17 Barber Colman Co Textile apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1172369A (fr) * 1956-02-17 1959-02-10 Procédé et dispositif pour rechercher et placer le commencement du fil sur les bobinoirs
US2892470A (en) * 1956-05-28 1959-06-30 Rydboholms Aktiebolag Method and means in looms for holding the weft end of a bobbin to be introduced into the shuttle
US2872948A (en) * 1956-08-31 1959-02-10 Draper Corp Automatic bobbin replenishing loom
US2845957A (en) * 1956-10-15 1958-08-05 Draper Corp Automatic bobbin replenishing loom
FR1205897A (fr) * 1957-03-30 1960-02-05 Procédé et dispositif pour la recherche de l'extrémité d'un fil

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1666735A (en) * 1920-06-07 1928-04-17 Barber Colman Co Textile apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257083A (en) * 1963-03-26 1966-06-21 Reiners Walter Suction device for withdrawing a starting length of yarn from a textile coil
US3289958A (en) * 1963-07-15 1966-12-06 Reiners Walter Method and apparatus for removing the reserve winding of yarn coils
US4272034A (en) * 1978-06-21 1981-06-09 Sk "Pamukotex" Spool-charging device for automatic-winding-machine magazines
CN111410091A (zh) * 2020-03-30 2020-07-14 苏州梅塔摩尔通信科技有限公司 一种线盘的转移装置
CN111675039A (zh) * 2020-03-30 2020-09-18 苏州梅塔摩尔通信科技有限公司 一种收线机的自动换盘码盘方法
CN111675039B (zh) * 2020-03-30 2022-04-08 苏州梅塔摩尔通信科技有限公司 一种收线机的自动换盘码盘方法

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GB994467A (en) 1965-06-10
CH394896A (de) 1965-06-30
DE1242130B (de) 1967-06-08

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