US3770220A - Device for readying the unwinding process of cops - Google Patents

Device for readying the unwinding process of cops Download PDF

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Publication number
US3770220A
US3770220A US00184468A US3770220DA US3770220A US 3770220 A US3770220 A US 3770220A US 00184468 A US00184468 A US 00184468A US 3770220D A US3770220D A US 3770220DA US 3770220 A US3770220 A US 3770220A
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US
United States
Prior art keywords
cops
thread
gripping device
thread gripping
base
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00184468A
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English (en)
Inventor
W Kupper
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oerlikon Textile GmbH and Co KG
Original Assignee
W Schlafhorst AG and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by W Schlafhorst AG and Co filed Critical W Schlafhorst AG and Co
Application granted granted Critical
Publication of US3770220A publication Critical patent/US3770220A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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

  • the device is pivotable in the di- [30] I Forelgn Apphca'mn Pnomy Data 3 rection of travel of the cops and is in operative proxim- Sept. 29, Germany.... P v The device is actuated each cop v 9 as .it passes to pick up the exposed section of thread. [52] U.S. Cl. 242/35.6 E 511 Int. Cl B65h 54/22 4 Claims, 3 Drawing Figures [58] Field of Search 242/3 5.6 E, 35.6 R,
  • the invention relates to a device for readying the unwinding process of cops. More particularly, the invention relates to a device for making ready the unwinding process of cops or supply coils which are led by transport means on a path along the contact line of two cylindrical bodies of rotation, wherein the starting end of the thread of the -cops'is exposed and pulled off by means of the cylinders.
  • Devices of the aforedescribed type serve to find the starting end of the thread in an upper or lower winding or on the periphery of the cops, to expose it and to keep the free starting end of the thread available for further operation.
  • the thread end can then be picked up by the thread gripping members of the processing machine, for example, ,a winding machine, and the unwinding process of the cops can be initiated.
  • An object of the invention is to provide a device for readying the unwinding process of cops which overcomes the disadvantages of known devices.
  • An object of the invention is to provide a device for readying the unwinding process of cops which prevents breakage of the thread and permits trouble-free pick up I and unwinding of the thread section.
  • Another object of the invention is to provide a device of simple structure for readying the unwinding process of cops which functions with efficiency, effectiveness and reliability.
  • a thread gripping device is provided within the guide path, at the height of the base of the cops.
  • the thread gripping device can be swung in the direction of transport of the cops and is actuated by the passing cop of its transport means.
  • the thread gripping device picks up the exposed piece of thread.
  • the start of its thread is thus first exposed and pulled off by the bodies of rotation.
  • the cop While the cop is transported on to a work station, it can swing around with its base, that is, in the region of the foot of its tube, a thread gripping device which projects into the free space above the support for the foot of the tube in such a manner that a thread passing through is picked up and is lifted from the surface of the cop in the direction of movement of the cop.
  • the thread gripping device may also be actuated, however, by the transport means which transports the cops such as, for example, the cradles or the conveyor belt. To accomplish this, these parts merely need be provided with control contours. A thread lifted from the cops in this manner permits the thread section to be pulled off without friction at the layers of yarn of the cop surface.
  • the device is particularly simple if the actuation of the thread gripping device is released by the passing cop.
  • the thread gripping device is provided with a roller sensing base of the cop.
  • a separating device acting upon the section of thread may be provided in the guide path of the cops betweenthe thread gripping device and the bodies of rotation.
  • the action of the thread gripping device may be further improved if a suction jet equipped with a thread clamp is associated with the lifted section of thread.
  • the suction jet may be provided at the end of the guide path and may hold the section of thread during the transfer of the cops to another processing machine, so that subsequent snagging at the cop surface is avoided.
  • the advantage obtained by the device of the invention is particularly that the starting end of the thread of the cop is reliably detached from the surface of the cop during the readying and is kept away fromm the surface until a perfect transfer of the cops to the subsequent processing device is assured.
  • FIG. 1 is a front view of an embodiment of the device of the invention for readying the unwinding process of cops with the thread gripping device;
  • FIG. 2 is a side view of the device of FIG. 1;
  • FIG. 3 is a top view of the device of FIG. 1.
  • a conveyor belt 1 has cradles 2 affixed thereto.
  • the cradles 2 receive cops 3.
  • the conveyor belt 1 is driven in the direction of an arrow 4 and transports the cops 3 to a subsequent processing station, not shown in the FIGS.
  • the cops 3 slide over thebase 6 on the foot of the tube of each.
  • the base 6 extends in the direction of the contact line 7 of a pair of cylinders 8.
  • the two cylinders 8 counter-rotate, as indicated by arrows 9 in FIG. 2.
  • snags of the aforedescribed type may occur and make it impossible to properly pick up the thread in one of the subsequent processing devices.
  • FIG. 1 Shown in FIG. 1, at the height of the base 3' of the cops 3, is the portion of a thread gripping device 12, cut along the lines II of FIG. 3, and a roller 13 of said device.
  • the position of the thread gripping device 12 shown in FIGS. 1 and 3 clearly shows that said device has picked up the thread section and has lifted it from the surface of the cops 3 to a position 10 (FIG. 1). 1
  • FIG. 3 Further details of the thread gripping device 12 are shown in FIG. 3. It is shown particularly clearly how the roller 13, connectedto the thread gripping device 12, is swung by the travel of a cops 3 in the direction of the arrow 4 against the force of a torsion spring 15 and how said thread gripping device may occupy a position 12', indicated by a broken dash-dotted line in FIG. 3.
  • the depth of immersion of the thread gripping device 12 into the gap between adjacent cradles 2 is limited by a stop 16 of an arm 17 (FIG. 3).
  • the thread gripping device 12 also has a lever arm 18 which, via a linkage 19, opens and closes a valve 21 of a suction jet 20, and thereby readies said suction jet to receive and retain a lifted section of thread.
  • Scissors 22 and 23 are provided under the base 6.
  • the scissors 22 and 23 can sever a lifted section of thread through the region between the base 6 and the cylinders 8, to prevent an unnecessarily long section from being pulled off by said cylinders. Parts of the scissors 22 and 23 are shown in FIGS. 1 and 2.
  • a device for readying the unwinding process of cops each having a base, which are guided by transport means on a path along the contact line between two cylindrical rotating bodies, the starting end of the thread of the cops being exposed and pulled off by the cylindrical rotating bodies, said device comprising a thread gripping device provided in the guide path of the cops at substantially the height of the base of the cops, and means mounting said thread gripping device for pivotable movement in the direction of travel of the cops, said thread gripping device being in operative proximity with the cops and being actuated by each cop as it passes to pick up the exposed section of thread.

Landscapes

  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US00184468A 1970-09-29 1971-09-28 Device for readying the unwinding process of cops Expired - Lifetime US3770220A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2047729A DE2047729C3 (de) 1970-09-29 1970-09-29 Vorrichtung zur Vorbereitung des Abspulvorganges von Kopsen

Publications (1)

Publication Number Publication Date
US3770220A true US3770220A (en) 1973-11-06

Family

ID=5783623

Family Applications (1)

Application Number Title Priority Date Filing Date
US00184468A Expired - Lifetime US3770220A (en) 1970-09-29 1971-09-28 Device for readying the unwinding process of cops

Country Status (9)

Country Link
US (1) US3770220A (cs)
JP (1) JPS4838906B1 (cs)
BE (1) BE773203A (cs)
CH (1) CH530336A (cs)
CS (1) CS166294B2 (cs)
DE (1) DE2047729C3 (cs)
FR (1) FR2108497A5 (cs)
GB (1) GB1366668A (cs)
IT (1) IT939480B (cs)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3923264A (en) * 1972-11-14 1975-12-02 Schlafhorst Co Maschf Device for making-ready the unwinding operation of cops
US4824037A (en) * 1986-08-06 1989-04-25 W. Schlafhorst & Co. Apparatus for freeing the bottom wraps and the downwinds of yarn from a textile bobbin

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5358627U (cs) * 1976-10-18 1978-05-19
JPS5411713U (cs) * 1977-06-23 1979-01-25
JPS55123856A (en) * 1979-03-13 1980-09-24 Murata Mach Ltd Thread tube distributing wheel having thread end positive feeder

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3464640A (en) * 1965-12-02 1969-09-02 Reiners Walter Device for pneumatically removing the tip or foot bunch from supply coils

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3464640A (en) * 1965-12-02 1969-09-02 Reiners Walter Device for pneumatically removing the tip or foot bunch from supply coils

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3923264A (en) * 1972-11-14 1975-12-02 Schlafhorst Co Maschf Device for making-ready the unwinding operation of cops
US4824037A (en) * 1986-08-06 1989-04-25 W. Schlafhorst & Co. Apparatus for freeing the bottom wraps and the downwinds of yarn from a textile bobbin

Also Published As

Publication number Publication date
IT939480B (it) 1973-02-10
DE2047729A1 (de) 1972-03-30
GB1366668A (en) 1974-09-11
BE773203A (fr) 1972-01-17
DE2047729C3 (de) 1979-03-15
CH530336A (de) 1972-11-15
FR2108497A5 (cs) 1972-05-19
DE2047729B2 (de) 1978-06-29
CS166294B2 (cs) 1976-02-27
JPS4838906B1 (cs) 1973-11-20

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