US3373948A - Method and device for pneumatically removing the tip or foot bunch from supply coils - Google Patents

Method and device for pneumatically removing the tip or foot bunch from supply coils Download PDF

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Publication number
US3373948A
US3373948A US598063A US59806366A US3373948A US 3373948 A US3373948 A US 3373948A US 598063 A US598063 A US 598063A US 59806366 A US59806366 A US 59806366A US 3373948 A US3373948 A US 3373948A
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United States
Prior art keywords
bunch
foot
tip
suction tube
cop
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Expired - Lifetime
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US598063A
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English (en)
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Raasch Hans
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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

  • ABSTRACT OF THE DISCLOSURE Supply coil is readied for subsequent processing by removing a tip or foot bunch therefrom by subjecting the bunch to be removed to the action of an air current supplied by a suction tube for relatively short time intervals until a thread end is exposed.
  • the exposed thread end is clamped at a clamping location with a clamping device located in an opening of the suction tube between the intervals during which the bunch is subjected to the air current.
  • the supply coil and the clamping location are relatively movable by means of 'a thrust member while the thread is clamped so as to mechanically draw off the thread end from the supply coil.
  • My invention relates to method and device for pneumatically removing the tip or foot bunch from supply coils such as for example spinning cops, pirn, bobbins or the like.
  • Patent No. 3,136,494 to S. Fiirst there has already been disclosed and described a device for readying the thread end of supply coils, wherein a suction tube provided with a gripping claw or hook and a clamping device are employed for removing the tip bunch of a coil axially displaceable in front of the supply coil.
  • the tip hunch is then seized by the gripping claw with relative motion between the supply coil and the suction tube and is mechanically pulled away, the thus freed thread end is drawn into the suction tube and rigidly clamped therein.
  • a mechanical device of this type for removing the tip or foot bunch of supply coils has the disadvantage that it is capable of use only to a limited extent for different diameters of the coil cores.
  • the movement of the gripping member must be effected very carefully so that the coil winding or bunch is not damaged when mechanically drawn off.
  • I provide a method and device for pneumatically removing tip or foot bunches from supply coils which combines the advantages of both the pneumatic and mechanical bunch-removing devices known heretofore while eliminating the disadvantages heretofore inherent in both of such types of bunch-removing devices.
  • I provide a method for removing tip or foot bunches from supply coils which comprises subjecting the tip or foot bunch which is to be removed to the action of an air current repeatedly for short periods of time, clamping the exposed thread end during the periods between the separate intervals when the thread is subjected to the air current,-and mechanically drawing off the bunch by relative motion between the cop and the clamping location of the thread end. Since a thread end is always exposed first when the tip or foot hunch is pneumatically removed, it is possible by means of my invention also to remove tip or foot bunches wherein the thread is entangled. These entanglements are mechanically removed by relative m0- ti-on between the cop and the clamping location.
  • the invention can be carried out with a forced or positive pressure air current as well as with a suction or negative pressure air current, it is generally sufiicient with the cops, threads and yarns employed at present, to use a suction air current.
  • the method comprises, in a particularly advantageous manner, the steps of inserting and withdrawing the cop with the tip or foot bunch that is to be removed, repeatedly for short intervals, into and out of a suction tube opening, the thread end which is sucked into the suction tube opening being clamped each time the cop is Withdrawn from the suction tube opening.
  • a device for carrying out the aforementioned method of my invention comprises means for producing relative motion between the cop and the clamping device, the
  • the bunchremoving device of my invention being coupled with the clamping device during the bunch-removing relative motion so that the clamping device is closed.
  • the device comprises a suction tube for removing the tip or foot bunch and a clamping device located within the suction tube opening which is so constructed that, for the purpose of producing relative motion between the cop and the suction tube opening, a tappet or thrust member which is coupled with the closing mechanism of the clamping device, acts upon the cop. It is more specifically advantageous to construct the clamping device so that it simultaneously serves as the suction tube closing member.
  • a spinning cop 1 having the usual steeply wound turns of a back winding 1a and a lower winding or foot bunch 1b.
  • the cop 1 is supplied in a conveyor pocket 2 driven by a conventional driving mechanism not illustrated in the drawing.
  • the cop drops downward after removal of a flap member located near the foot thereof such as is for example disclosed in Patent No. 2,707,548 to S. Fiirst, into the funnel-shaped suction tube opening 3 to which the suction tube 31 is connected.
  • a tappet 4, in the illustrated withdrawn position holds the valve flap 5, which serves to close the suction tube opening, in an open position by engaging with the arm a which is rigidly secured to the flap 5.
  • the valve flap 5 When the tappet 4 is moved in response to the movement of a rod 41, which follows a non-illustrated cam mechanism, into the position 4 shown in phantom, the valve flap 5 is simultaneously moved by engagement with the tappet or thrust member 4 into the position 5 shown in phantom, and consequently closes the suction tube opening. Reliable closure of the flap 5, 5' is effected by the negative pressure of the suction tube. As long as the valve flap 5 is open, the air suction current is able to exert an influence upon the foot bunch 1b and to expose the thread end P. Let us assume that this thread end P has become entangled at a location of the foot bunch 1b.
  • valve flap 5 If the valve flap 5 is then moved over to the closed position 5' thereof, the thread end P corresponding to the phantom view F thereof is clamped against the clamping location 32 of the suction tube opening 3 which has the form of a sealing surface. With the further movement of the tappet 4 to the phantom position 4, the cop 1 is forced out of the suction tube opening into the illustrated phantom position thereof. Accordingly, the spacing between the clamping location 32 and the foot bunch 1b becomes greater and the thread is thereby mechanically drawn otf.
  • tappet 4, 4' may possibly prevent the entire bunch from sliding off the coil core, however, experiments have shown that the thread is able to be drawn off quite well for a length corresponding to the length of displacement of the cop, because it either slides under the tappet arm 4, 4 or the cop tends to turn slightly so as to permit the thread to avoid the tappet 4,4.
  • the tappet 4 then returns to the withdrawn position 4 indicated in solid lines in the figure and thereby opens the valve flap 5 by engaging the arm 5a thereof so that the loosened thread can be further sucked into the suction tube 3, 31. This operating period is carried out several times so as to remove the foot bunch 1b reliably even if the thread F is caught at several locations.
  • the shears 6 are then activated in a conventional manner so that both the thread end P as well as the thread starting end ultimately projecting from below the cop winding, which is formed at the beginning of the winding operation performed on the supply coil, are severed.
  • the suction tube opening with elastic bearing layers 7, 7 such as rubber or the like.
  • These elastic layers are advantageously formed of rings which are not closed, but rather, consist of several individual layer portions located spaced from one another, so that when the cop is inserted in the mouth of the suction tube, the suction air current is not interrupted by these elastic layer portions 7, 7.
  • the slit in the suction tube opening through which the tappet 4 extends is sealed by a pair of adjacent elastic strips 8. The opening slit between the elastic strips is closed by the negative pressure of the suc tion tube on both sides of the tappet 4.
  • the invention of this application is not limited only to the schematically illustrated embodiment of the drawing.
  • the cop can be guided in a hanging condition above the suction tube opening 3, whereby the suspension of the cop is of such construction that it replaces the functions of the tappet 4, that is, the cop is inserted and withdrawn several times into and out of the suction tube opening and when being withdrawn closes the valve flap 5 each time.
  • my invention in connection with a conveyor device in whch the cop is guided in an inclined or horizontal position instead of in a vertical position as shown in the figure.
  • Method of readying a supply coil for subsequent processing by removing a tip or foot bunch therefrom which comprises repeatedly subjecting the bunch to be removed to the action of an air current for relatively short time intervals until a thread end of the bunch is exposed, clamping the exposed thread end at a clamping location between the intervals during which the bunch is subjected to the air current, and relatively moving the supply coil and the clamping location while the thread is clamped so as to mechanically draw off the thread end from the supply coil.
  • Device for readying a supply coil for subsequent processing by removing a tip or foot bunch therefrom compressing means for subjecting a bunch to be removed from a supply coil to an air current for relatively short time intervals until a thread end of the bunch is exposed, clamping means for clamping the exposed thread end at a clamping location between the intervals during which the hunch is subjected to the air current, and means for elfecting relative motion between the supply coil and said clamping means, said means for effecting relative motion being operatively engageable with said clamping means when the supply coil and said clamping means are in motion relative to one another for actuating said clamping means to clamp the exposed thread end.
  • said means for subjecting the bunch to an air current comprises a suction tube having an opening, said clamping means being located in said opening, said means for effecting relative motion between the supply coil and said clamping means comprising a thrust member operatively engageable with the supply coil for moving the supply coil relative to the clamping means, said thrust member being also operatively engageable with said clamping means for actuating said clamping means to clamp the exposed thread end.

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  • Spinning Or Twisting Of Yarns (AREA)
  • Looms (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
US598063A 1965-12-02 1966-11-30 Method and device for pneumatically removing the tip or foot bunch from supply coils Expired - Lifetime US3373948A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER0042113 1965-12-02

Publications (1)

Publication Number Publication Date
US3373948A true US3373948A (en) 1968-03-19

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Application Number Title Priority Date Filing Date
US598063A Expired - Lifetime US3373948A (en) 1965-12-02 1966-11-30 Method and device for pneumatically removing the tip or foot bunch from supply coils

Country Status (4)

Country Link
US (1) US3373948A (de)
BE (1) BE690633A (de)
CH (1) CH442101A (de)
DE (1) DE1560572C3 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3559904A (en) * 1968-03-16 1971-02-02 Reiners Walter Device for removing the starting end of a coil-wound textile yarn from the bore of a core on which the coil is wound
US3608843A (en) * 1968-06-25 1971-09-28 Schweiter Ag Maschf Method and apparatus for the pneumatic removal of the foot winding or lap from cops
US3897022A (en) * 1970-05-18 1975-07-29 Savio Spa Eliminate tail-ends of yarn and to pick up the end of the end of the wound yarn
US4036444A (en) * 1975-07-03 1977-07-19 Maschinenfabrik Schweiter Ag Apparatus for pneumatically separating a foot lap from a spinning cop
US4660780A (en) * 1984-04-05 1987-04-28 Murata Kikai Kabushiki Kaisha Yarn end finding device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3827877A1 (de) * 1988-08-13 1990-02-15 Schlafhorst & Co W Vorrichtung zum freilegen des fadenanfanges von textilspulen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1399262A (fr) * 1964-06-19 1965-05-14 Konink Textielfabrikenen Nijve Procédé et dispositif pour démêler et dérouler les extrémités de fil d'une canette
US3203634A (en) * 1961-12-11 1965-08-31 Reiners Walter Suction device for removing 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
US3295776A (en) * 1964-10-07 1967-01-03 Leesona Corp Method and means for readying supply bobbins

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3203634A (en) * 1961-12-11 1965-08-31 Reiners Walter Suction device for removing 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
FR1399262A (fr) * 1964-06-19 1965-05-14 Konink Textielfabrikenen Nijve Procédé et dispositif pour démêler et dérouler les extrémités de fil d'une canette
US3295776A (en) * 1964-10-07 1967-01-03 Leesona Corp Method and means for readying supply bobbins

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3559904A (en) * 1968-03-16 1971-02-02 Reiners Walter Device for removing the starting end of a coil-wound textile yarn from the bore of a core on which the coil is wound
US3608843A (en) * 1968-06-25 1971-09-28 Schweiter Ag Maschf Method and apparatus for the pneumatic removal of the foot winding or lap from cops
US3897022A (en) * 1970-05-18 1975-07-29 Savio Spa Eliminate tail-ends of yarn and to pick up the end of the end of the wound yarn
US4036444A (en) * 1975-07-03 1977-07-19 Maschinenfabrik Schweiter Ag Apparatus for pneumatically separating a foot lap from a spinning cop
US4660780A (en) * 1984-04-05 1987-04-28 Murata Kikai Kabushiki Kaisha Yarn end finding device

Also Published As

Publication number Publication date
CH442101A (de) 1967-08-15
DE1560572B2 (de) 1974-07-11
BE690633A (de) 1967-05-16
DE1560572C3 (de) 1975-03-06
DE1560572A1 (de) 1970-10-29

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