US3923264A - Device for making-ready the unwinding operation of cops - Google Patents

Device for making-ready the unwinding operation of cops Download PDF

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Publication number
US3923264A
US3923264A US414709A US41470973A US3923264A US 3923264 A US3923264 A US 3923264A US 414709 A US414709 A US 414709A US 41470973 A US41470973 A US 41470973A US 3923264 A US3923264 A US 3923264A
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US
United States
Prior art keywords
cops
thread
transport plate
path
conveyor means
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
US414709A
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English (en)
Inventor
Willi 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
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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 US3923264A publication Critical patent/US3923264A/en
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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

  • ABSTRACT A device for making ready for the unwinding process of cops of the type wherein the cops are guided by conveyor means on a path along the contact line of two counter-rotating cylinders arranged parallel to each other so that the beginning of the thread of the cop is exposed and pulled off by means of the cylinders.
  • a transport plate which is movable transversely to the travel direction of the cops, is equipped with several teeth, is arranged underneath of the support for the cop tube bases. The toothed transport picks up threads individually and makes them a desired length and feeds them to a scissors which individually cuts them to the same length. The threads are then picked up by a suction device in position for further processmg.
  • This invention relates to means for securing the ends of threads of partially filled cops of yarn mounted on spindles. 1
  • the invention relates to means for making cops ready for the unwinding process, in devices of the type wherein cops are guided by conveyor means on a path. along the contact line of two counterrotating cylinders arranged parallel to each other, whereby the beginning of the thread of the cop is exposed and pulled off by the cylinders.
  • Such devices serve for finding the beginning of the thread lying in an outer or inner layer or on the circumference of the cop, to expose it and to hold the free end of the thread ready for further processing operations. It is then possible for the thread grippers of a processing machine, for instance, an automatic winding machine, to grab the exposed end of the thread, so that the unwinding process for the cop can be initiated.
  • the device described above fulfills its purpose only if full cops are being prepared, in which the exposed section of thread reaches at least from the tip of the cop to the tube base and is long enough to be held reliably by the elements for gripping the beginning of the thread, which are arranged on the route of the further processing.
  • the exposed thread end is in general several times shorter than in full cops, so that this short thread end is no longer reliably gripped by the succeeding holding elements, for instance, those of an automatic winding machine, and failures occur.
  • a toothed transport plate mounted underneath the support for the cop tube bases, which is movable transversely to the travel direction of the cop and is equipped with several teeth.
  • the support for the tube bases is provided in the region of the teeth of the transport plate with an aperture having a corresponding number of tooth gaps.
  • the transport plate By means of the transport plate it is possible to extend the normally shorter thread end of a partially empty cop, to a greater length sufficient for further processing. For this purpose, the thread end is brought to a waiting position during the further travel of the cop.
  • the number of teeth of the transport plate and the equal number of tooth gaps in the support for the tube bases determines that number of cops, whose thread ends can initially be held fast and can be brought to the required length during the passage of this predeterminable number of cops past the transport plate.
  • the transport plate is coupled with a threadsevering device, that thread end can always be severed which has spent the longest time in the waiting position and has therefore reached the greatest length.
  • the transport plate and the thread-severing device are coupled to a solenoid which is actuated by the cops travelling past the transport means by means of a photo cell. This determines the timing sequence for bringing the thread ends into the waiting position and the severing of the threads.
  • the severed thread ends of the cops can be gripped for further processing by a thread storage device connected to a stream of suction air and located adjacent to the thread-severing device.
  • FIG. 1 is a front view of the device for preparing the unwinding process of partially empty cops on a conveyor belt.
  • FIG. 2 is a side view of FIG. 1, partially in cross section.
  • FIG. 3 is a top view along the cross section line III- III of FIG. 1.
  • FIG. 4 is an enlarged detail view of FIG. 3.
  • FIG. 1 shows a conveyor belt 1, to which cradles 2 are attached which serve to receive the cops 3 and which the embodiment shown, are charged with partly empty cops of different yarn content.
  • the conveyor belt 1 is driven in the direction of the arrow 4 and transports the cops 3 to a station for further processing, not shown, for instance, an automatic winding machine.
  • the cops 3 are wound on tubes 5, and slide with their tube base 5' over the support 6, which is arranged along the contact line 7 of two counter-rotating cylinders 8.
  • the counter-rotation of the cylinders 8 is indicated in FIG. 2 by the arrows 9.
  • the thread ends 10 which have been separated already from the cops 3 in a manner known per se by mechanical or pneumatic means, are seized by the cylinders 8 and are pulled off further during the transport.
  • the cops 3' have already passed the transport plate 11, which as shown in FIG. 4 is made with four teeth 12, and the thread ends 10' of these cops are in the tooth gaps 13 of the support 6, in the waiting position of plate 11.
  • FIGS. 2 and 3 show a cop 3 with its thread end which goes from the first tooth gap 13 in the support 6 via the first tooth 12 of the transport plate 11 to the cylinders 8.
  • a thread storage device 14 also shown in FIG. 3, which is acted upon by a stream of suction air.
  • this thread storage device 14 is sucked and held the thread end 10 of a cop 3. This thread has reached the length required for further processing and will be cut off above the cylinders 8 by a thread-severing device which will be described.
  • the actuation of the transport plate 11 is shown in FIG. 3.
  • the transport plate 11 is arranged movably underneath the support 6, as already mentioned. With the solenoid 16 energized, the teeth 12 of the transport plate 11 are situated coincident under the toothgaps 13 of the stationary support 6.
  • FIG. 4 shows the transport plate 11 after the completion of this return motion, i.e., when the starting position is reached.
  • a new thread end 10' can be accepted from the cops which now passes into the first tooth gap 13 of member 6, upper most in FIG. 4 and the tooth 12 of plate 11 which corresponds to this tooth gap.
  • the thread-severing device 15 which consists of the two scissor halves 23 and 24 connected to plate 6 with a fixed pin 27, is actuated.
  • Scissor half 24 is fixed to pin 27 while scissor half 23 is pivotally mounted on pin 27.
  • Lever 26 is fixed to scissor half 23 and pivotally connected to plate 11 with a pin and slot connection 15.
  • the thread end situated in the last tooth gap 13 is cut by the thread-severing device 15.
  • the thread end situated in the last tooth gap 13 has then reached the desired length required for the further processing.
  • the number of the teeth and tooth gaps can, of course, also be decreased or increased and thus, the length of the thread end can be adapted to the particular conditions.
  • Device for making-ready the unwinding process of cops comprising a pair of counter-rotating cylinders disposed parallel to one another along a common contact line, conveyor means for moving a series of substantially vertically disposed cops having respective previously loosened thread ends on a path parallel to said cylinders and along said contact line thereof so that the thread ends are seizable by said cylinders at said common contact line thereof and withdrawable from the cops as the latter are moved along said path by said conveyor means, a transport plate located adjacent said conveyor means and having a plurality of teeth disposed in a plane transverse to the path of movement of the cops, and means for moving said transport plate and said plurality of teeth thereof in a direction transverse to the path of movement of the cops in synchronism with said movement of the cops by said conveyor means for picking up successive thread ends of the series of cops and moving them in a step by step manner transversely to the path of movement of the cops.
  • Device including a support for the cops located below said conveyor means and extending parallel to said transport plate, said support having in the region of the teeth of the transport plate a corresponding number of tooth gaps.
  • Device having a thread storage suction device, said thread storage suction device being located operatively adjacent to said thread severing device, said suction device being adapted to hold the thread ends extending from the cops.

Landscapes

  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US414709A 1972-11-14 1973-11-12 Device for making-ready the unwinding operation of cops Expired - Lifetime US3923264A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2255645A DE2255645C3 (de) 1972-11-14 1972-11-14 Vorrichtung zur Vorbereitung des Abspulvorganges von Kopsen

Publications (1)

Publication Number Publication Date
US3923264A true US3923264A (en) 1975-12-02

Family

ID=5861634

Family Applications (1)

Application Number Title Priority Date Filing Date
US414709A Expired - Lifetime US3923264A (en) 1972-11-14 1973-11-12 Device for making-ready the unwinding operation of cops

Country Status (8)

Country Link
US (1) US3923264A (fr)
JP (1) JPS5647106B2 (fr)
BE (1) BE807286A (fr)
CH (1) CH561150A5 (fr)
DE (1) DE2255645C3 (fr)
FR (1) FR2206751A5 (fr)
GB (1) GB1441792A (fr)
IT (1) IT996431B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4953799A (en) * 1988-09-07 1990-09-04 W. Schlafhorst & Co. Cutting apparatus for severing trailing yarns on spinning bobbins

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55123856A (en) * 1979-03-13 1980-09-24 Murata Mach Ltd Thread tube distributing wheel having thread end positive feeder
JP2541841B2 (ja) * 1988-06-08 1996-10-09 村田機械株式会社 糸端の口出し装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3770220A (en) * 1970-09-29 1973-11-06 Schlafhorst & Co W Device for readying the unwinding process of cops

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3770220A (en) * 1970-09-29 1973-11-06 Schlafhorst & Co W Device for readying the unwinding process of cops

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4953799A (en) * 1988-09-07 1990-09-04 W. Schlafhorst & Co. Cutting apparatus for severing trailing yarns on spinning bobbins

Also Published As

Publication number Publication date
BE807286A (fr) 1974-03-01
IT996431B (it) 1975-12-10
JPS4975847A (fr) 1974-07-22
DE2255645B2 (de) 1980-08-28
GB1441792A (en) 1976-07-07
CH561150A5 (fr) 1975-04-30
DE2255645C3 (de) 1981-04-16
FR2206751A5 (fr) 1974-06-07
DE2255645A1 (de) 1974-05-16
JPS5647106B2 (fr) 1981-11-07

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