US3377031A - Device for pulling the leading end of yarn from a textile coil - Google Patents

Device for pulling the leading end of yarn from a textile coil Download PDF

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Publication number
US3377031A
US3377031A US537477A US53747766A US3377031A US 3377031 A US3377031 A US 3377031A US 537477 A US537477 A US 537477A US 53747766 A US53747766 A US 53747766A US 3377031 A US3377031 A US 3377031A
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United States
Prior art keywords
yarn
coil
nozzle
suction
pulling
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Expired - Lifetime
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US537477A
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English (en)
Inventor
Raasch Hans
Furst Stefan
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Individual
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Individual
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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
    • B65H67/08—Automatic end-finding and material-interconnecting arrangements
    • B65H67/086—Preparing supply packages
    • 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

  • a ril 9, 1968 THE LEADING END OF YARN FROM A TEXTILE COIL Filed March 25, 1966 H. RAASCH ETAL 3,377,031 DEVICE FOR PULLING United States Patent ABSTRACT OF THE DISCLOSURE Device for pulling a leading end of yarn from a coil includes coil holder means for rotating a yarn coil about its axis, a suction nozzle having a suction mouth adjacent the holder means to induct an air current for pulling the yarn end off the rotating coil, mechanical clamping means located in the suction-air current of said nozzle, and means for moving the clamping means periodically into engagement with the yarn end within the suction-air current for supplementing the entraining action of the suction-air current to grip the yarn end intermittently.
  • Our invention relates to a device for pulling the leading yarn end from a rotating spinning cop, cheese or other coil by means of'a suction nozzle whose mouth is located close to the coil peripheral surface.
  • the yarn may form a number of turns or 'a bunch which is wound in the direction opposed to the winding sense of the yarn body.
  • Such a counter winding may come about, for example, if the yarn to be pulled off is clamped between individual yarn layers of the coil and is entrained by these yarn layers during rotation of the coil. This occurs particularly in cases where the suction force of the nozzle is weak or becomes weak due to a relatively slight negative pressure-or because the spacing between nozzle mouth and yarn body is too large. The latter event is apt to occur, for example, with spinning cops when the nozzle is to act not only upon the cylindrical but also upon the conical portion of the yarn body.
  • the device for suctionally pulling the leading end of yarn from a coil with gripper means for periodically seizing the yarn end located in the suction flow path of the suction nozzle whose mouth is adjacent the holder means which accommodates the coil of yarn and rotates it about its axis when the suction nozzle acts to pull the leading end of yarn from the coil.
  • the gripper means are of such construction that when the yarn end is periodic'ally seized or clamped thereby and as the coil continues rotating, any catches formed in the yarn, which cause the aforementioned counter windings, are accordingly torn away. The loosened yarn loop, present when the gripper means are released, is then entrained by the suction flow and sucked away.
  • the gripper means comprise a pair of oscillata-ble, periodically overlapping yarn-diverting members located in front of the mouth of the suction nozzle.
  • the members are formed of channels having a U-shaped profile, the legs thereof extending toward one another so as to intermesh, and by supplementing the entraining or clamping of the yarn produced thereby, resistance is effected against the withdrawal of the yarn from the nozzle when a counter-winding is formed. Since the yarn can then no longer be withdrawn from the nozzle without very great resistance, the yarn catch which can cause the formation of a counterwinding, is torn away as the coil continues to rotate. The loosened loop then present can be rapidly sucked away as in the aforementioned case when the meshing yamdiverting members are separated from one another.
  • FIG. 1 is, by way of example, a schematic plan view of an embodiment of a yarn-end pulling device constructed in accordance with our invention.
  • FIG. 2 is a section taken along the line IIII of FIG. 1 in the direction of the arrows.
  • a suction nozzle 4 has a mouth opening located at 4b at a small distance from the peripheral surface of the cop 1, the length of the mouth opening being substantially equal to the axial length of the yarn body of the cop.
  • the starting length of yarn is to be pulled off the cop 1 by the suction produced by the nozzle 4.
  • a sheet-metal channel, 6 of U-shaped profile is located substantially along the starting cone C of the spinning cop 1 at the mouth 4b of the suction nozzle 4.
  • a rocker arm 8 is mounted on the nozzle 4 and is pivotable intermediate its ends about a pin 7.
  • another sheet-metal channel '6' of U-shaped cross section is secured as by soldering, welding or any other suitable fastening means.
  • One end of a coupling 9 is secured as by a pivot pin to the other end of the rocker arm 8, and the free end of the coupling 9 is fastened 'to a cam disc 10 which is rotated by a motor 5 through suitable transmission means that are not'illustrated.
  • the rocker arm 8 thus rocks back and forth so that the edges of the U-shaped channel 6' periodically overlap the edges of the U-shaped channel 6.
  • the yarn end sucked into the nozzle 4 is consequently seized and drawn into the channels 6 and 6'. Due to the additional clamping of the yarn produced thereby, re-
  • Device for pulling a leading end of yarn from a coil comprising coil holder means for rotating a yarn coil about its axis, a suction nozzle having a suction mouth adjacent said holder means to induct an air current for pulling the yarn end off the rotating coil, mechanical clamping means located in the suction-air current of said nozzle, and means for moving said clamping'means periodically into engagement with the yarn end within the suction-air current for supplementing the entraining action of the suction-air current to grip the yarn end intermittently.
  • said clamping means comprises a pair of yarn-diverting members mounted for oscillation relative to one another on said suction nozzle, said yarn-diverting members having edges that are periodically mutually overlapping.
  • said yarndiverting members are in the form of a channel having a substantially U-shaped cross section.
  • one of said channels is fixed to an edge of said suction mouth and the other of said channels is carried by a rocker arm and oscillatable into periodic overlapping relationship with said fixed channel.

Landscapes

  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Coloring (AREA)
US537477A 1965-04-03 1966-03-25 Device for pulling the leading end of yarn from a textile coil Expired - Lifetime US3377031A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER0040305 1965-04-03

Publications (1)

Publication Number Publication Date
US3377031A true US3377031A (en) 1968-04-09

Family

ID=7406016

Family Applications (1)

Application Number Title Priority Date Filing Date
US537477A Expired - Lifetime US3377031A (en) 1965-04-03 1966-03-25 Device for pulling the leading end of yarn from a textile coil

Country Status (5)

Country Link
US (1) US3377031A (instruction)
BE (1) BE678896A (instruction)
CH (1) CH435073A (instruction)
DE (1) DE1560565A1 (instruction)
GB (1) GB1136114A (instruction)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4169563A (en) * 1977-11-09 1979-10-02 Maschinenfabrik Schweiter Ag Thread draw-off device
US4570867A (en) * 1982-08-06 1986-02-18 W. Schlafhorst & Co. Device for sucking-up and holding a thread

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60213669A (ja) * 1984-04-05 1985-10-25 Murata Mach Ltd 糸端の口出し装置
DE3804373A1 (de) * 1988-02-12 1989-08-24 Schlafhorst & Co W Verfahren und einrichtung zum suchen und loesen der hinterwindung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2857113A (en) * 1953-11-03 1958-10-21 Reiners Walter Dr Ing Suction nozzle for catching thread ends
US3136494A (en) * 1956-10-18 1964-06-09 Reiners Walter Method and means for preparing spinning cops for rewinding

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2857113A (en) * 1953-11-03 1958-10-21 Reiners Walter Dr Ing Suction nozzle for catching thread ends
US3136494A (en) * 1956-10-18 1964-06-09 Reiners Walter Method and means for preparing spinning cops for rewinding

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4169563A (en) * 1977-11-09 1979-10-02 Maschinenfabrik Schweiter Ag Thread draw-off device
US4570867A (en) * 1982-08-06 1986-02-18 W. Schlafhorst & Co. Device for sucking-up and holding a thread

Also Published As

Publication number Publication date
CH435073A (de) 1967-04-30
DE1560565A1 (de) 1970-04-30
GB1136114A (en) 1968-12-11
BE678896A (instruction) 1966-09-16

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