US3816990A - Device for exchanging bobbins on an open-end spinning machine - Google Patents

Device for exchanging bobbins on an open-end spinning machine Download PDF

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Publication number
US3816990A
US3816990A US00343534A US34353473A US3816990A US 3816990 A US3816990 A US 3816990A US 00343534 A US00343534 A US 00343534A US 34353473 A US34353473 A US 34353473A US 3816990 A US3816990 A US 3816990A
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United States
Prior art keywords
thread
bobbin
cutting device
suction
arrangement according
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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
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US00343534A
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English (en)
Inventor
H Hoffmann
H Schiebenhofer
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Fried Krupp AG
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Fried Krupp AG
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Publication date
Application filed by Fried Krupp AG filed Critical Fried Krupp AG
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Publication of US3816990A publication Critical patent/US3816990A/en
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/48—Piecing arrangements; Control therefor
    • 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
    • B65H67/04—Arrangements for removing completed take-up packages and or replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements
    • 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 treating a thread during a bobbin exchange on an open-end spinning; machine, which is characterized primarily by a cutting device comprising shears operable during an advancing and retracting stroke of the cutting device, the cutting device having associated therewith devices by means of which a thread spun at full output of the spinning machine is during the advancing stroke of the cutting device caught and centered toward the shears, is held stationary during the cutting operation, is subjected to suction during a bobbin exchange, and subsequent to the bobbin exchange is automatically conveyed onto an empty bobbin sleeve on a bobbin holder.
  • the present invention relates to a device for treating the thread during the bobbin'exchange on an open end spinning machine.
  • the bobbin exchange Since the spinning turbines of an open end spinning machine are customarily drivenby means of a common driving belt, the bobbin exchange has heretofore required that the entire spinning machine. is stopped or operated at a considerably reduced speed of rotation. In the first instance, it is necessary that the thread be pieced anew. In the second instance, the possibility that threads spun at reducedispeed of rotation will be affected as to quality will have to be put up with. In both instances, the degree of using the capacity of the open.
  • FIG. 1 diagrammatically illustrates inview in'the direction of the length of the machine a spooling'device according to the invention ofan open end spinning machine.
  • FIG. 2 illustrates in a section along the line IIIIII of FIG. 2c the principle of clamping the thread during the cutting operation.
  • FIGS. 221 to 2d diagrammatically illustrate individual phases ofoperations during the advance ofthe cutting.
  • spinning machine for treating the thread during a bobbin exchange in an open end: spinning machine is characterized primarily by a cutting device which is movable in transverse directionwithin the region of the thread circulation and is provided with a shear which is operable during the advance and return stroke.
  • Thiscuttingdevice has associated therewith devices by means of which the threadspun at full output of the machine is adapted.
  • the fundamental idea underlying the present invention consists in treating the thread during the bobbin exchange in such a way that his first cut off and is conveyed to a suction device, and after in the bobbin holder the full bobbin has been exchanged. for an empty tube or sleeve, the thread is again cutoff and automatically moves onto the empty tube or sleeve.
  • the thread which is delivered from the spinning turbine at full spinning output is conveyed into a suction system which is arranged separately from the central suction device of the. spinning machine; In this way, loosefiber lint andfinished fiber pieces are advantageously kept separate from each other.
  • the guiding plate 4 At the front of thecutting device 3 there is'arranged the guiding plate 4by means of which the thread to be cut is adapted during'the advance stroke toward the shear 5. and clamping. device 6 to be caught and centered.
  • the cutting. device. 3' has furthermore arranged thereonthe suction pipe 8 with its suction end located below the shear 5E
  • the SUCIIOITYPIPI? is, through a telescopic arrangement, adapted at different distances to be connected to the collectingi passage 9 which in a non-illustrated manner pertains to a suction system which is independent from thecentral machine suction system and is intended for: separatingloose fiber lint and pieces of finished thread.
  • closure flap l0 which' when the weight8a that holds the closure flap 10 in its closing position, moves onto the driving roller 2 during the advance stroke ofrthe 'cuttingdevice 3, is pivotable into itsopeningposition.
  • the shears 5 comprise in customary manner two legs 5a and 5b which are rotatable about the axis 5c.
  • anchor member 6 On the lower leg 5a (FIG. 2), and anchor member 6 is arranged in such a way that during the closing movement of the shears, the upper leg 5b of the shears will, with its upper side, move along the horizontal part of the anchor 6 so that the thread 1 will be clamped fast prior to the cutting action proper being carried out by the shears.
  • FIG. 2a shows the open or starting position of the cutting device. Thread 1 is in engagement with the groove 2a of the traversing and driving shaft 2 and thus is subjected to a reciprocatory movement, the so-called traversing movement.
  • the catching region 4a of the guiding contour 4 includes the axial extension of the groove 2a so that the thread 1, by means of the guiding contour 4 is, during the advance of the cutting device into the position of FIG. 2b, caught in its traversing movement and centered toward the shears 5.
  • the thread 1 is clamped in conformity with the illustration in FIG. 2 and is cut through.
  • the shears 5 and the clamping device 6 open so that the created free thread end is, in conformity with FIG. 1, drawn into the suction pipe 8.
  • the sequence is reversed.
  • the thread I is clamped anew and cut through and during the further movement of the cutting device into the position according to FIG. 2b is freed again by the shears 5 and the clamping device 6 (FIG. 2) so that the thread is, in conformity with FIG. 1, passed over the guiding plate 7 and passed by the suction pipe 8 which has been closed in the meantime, and automatically moves onto the empty sleeve 1 1.
  • the thread 1 is completely released so that it is caught by the groove 2a of the traversing and driving shaft 2 and carries out the provided traversing movement.
  • FIG. 2b The manner of operation of the shears 5 with the clamping device 6 during the advancing and returning stroke is known per se.
  • the principle of this actuation is clearly evident from FIG. 2b.
  • the stationary abutments 21 and 22 are indicated, which during the advance stroke of the cutting device of shears 5 will cooperate with the front deflecting surfaces 23 and 24 and during the return stroke of the cutting device will cooperate with the rear deflecting surfaces 25 and 26 of arms 27 and 28 of the two shear arms 5a and 5b in the direction of closing of the shears 5.
  • the opening again of the shears 5 is effected by a spring device on the shears, which spring device is known per se, and therefore is not illustrated in the drawings.
  • the device for treating the thread during the bobbin exchange operates as follows: by pulling forward the cutting device 3 from its nonillustrated rest position toward the left with regard to the drawings, the thread 1, which up to that time comes from the non-illustrated spinning turbine and by means of the transversely moving roller 2 is wound onto the bobbin (sleeve 11) is caught from its traverse movement and centered toward the shear 5 and clamping device 6 where it is substantially simultaneously clamped and cut. In view of the brief clamping, the thread is relaxed so that it cannot spring back.
  • the thread then passes past the suction pipe I automatically onto the driven empty sleeve or tube, said suction pipe 8 now being closed by flap 10 while standing further under the suction pressure.
  • the surface of the sleeve or tube 11 has a high gripping ability so as, so-to-speak, to grasp the thread end, and a new spooling operation starts.
  • the closing of the suction pipe 8 is advantageous also for the reason that as a result thereof the necessary suction power can with a long spinning machine be held low.
  • the bobbin exchange can be carried out semi-automatically while the actuation of the cutting device 3 and the exchange of the full bobbin for an empty sleeve or tube can be effected manually.
  • the device according to the invention also offers the possibility of providing additional steps up to a fully automatic bobbin exchange.
  • the release of the control for the drive may also be effected automatically, for instance, in conformity with the movement or actuation of the bobbin holder 12.
  • a device for treating the thread during a bobbin exchange on said bobbin holder which includes: a cutting device provided with shear means and reciprocably movable into and out of said thread path in a direction transverse thereto to carry out an advance and retraction stroke, and means associated with said cutting device and operable in response to the advance stroke of said cutting device to cause said thread to be caught and centered and to be held fast during the cutting of said thread and to be subjected to a suction effect during the bobbin exchange, and following the bobbin exchange to be passed onto an empty bobbin sleeve on said bobbin holder.
  • An arrangement according to claim 1 which includes suction conduit means arranged on said cutting device and having its suction mouth located within the region below said shear means, and means for making said suction conduit means temporarily ineffective to permit a thread automatically to engage an empty bobbin sleeve and carry out the initial winding up step thereon.
  • suction conduit means is formed by positionvariable conveying means connecting said suction mouth to said suction conduit means.
  • said position-variable conveying means includes a telescopic pipe system.
  • said position-variable conveying means includes a flexible hose.
  • suction conduit means includes a collecting passage of a suction system independent of a central suction means for said spinning turbine.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
US00343534A 1972-03-23 1973-03-21 Device for exchanging bobbins on an open-end spinning machine Expired - Lifetime US3816990A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2214095A DE2214095A1 (de) 1972-03-23 1972-03-23 Vorrichtung fuer das spulenwechseln an einer offen-end-spinnmaschine

Publications (1)

Publication Number Publication Date
US3816990A true US3816990A (en) 1974-06-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00343534A Expired - Lifetime US3816990A (en) 1972-03-23 1973-03-21 Device for exchanging bobbins on an open-end spinning machine

Country Status (7)

Country Link
US (1) US3816990A (de)
JP (1) JPS496226A (de)
BE (1) BE797097A (de)
CH (1) CH552080A (de)
DE (1) DE2214095A1 (de)
FR (1) FR2176957B3 (de)
IT (1) IT981435B (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974972A (en) * 1973-06-26 1976-08-17 Schubert & Salzer Maschinenfabrik Aktiengesellschaft Apparatus for forming a reserve winding on a yarn spool
US4132056A (en) * 1975-12-23 1979-01-02 Schubert & Salzer Open end spinning apparatus
US4165046A (en) * 1977-11-30 1979-08-21 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Doffing apparatus in spinning machine
US4496109A (en) * 1981-04-28 1985-01-29 Celanese Corporation Apparatus for cutting, aspirating and rethreading a traveling filamentary yarn
US5192032A (en) * 1990-10-31 1993-03-09 John Brown Inc. Automatic winding unit
US5568897A (en) * 1993-12-24 1996-10-29 Menegatto S.R.L. Cutter for cutting yarn in textile machines
EP1285983A1 (de) * 2001-08-22 2003-02-26 W. SCHLAFHORST AG & CO. Serviceaggregat für eine Kreuzspulen herstellende Textilmaschine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4006864A (en) * 1973-11-27 1977-02-08 Daiwa Boseki Kabushiki Kaisha Method and apparatus for carrying out doffing and donning operation

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732611A (en) * 1956-01-31 planer
US2934884A (en) * 1956-06-01 1960-05-03 Wachovia Bank And Trust Compan Scavenger roll and flute holder
US3475891A (en) * 1962-10-11 1969-11-04 Asahi Chemical Ind Method of and apparatus for doffing yarns in the centrifugal pot spinning process
US3492804A (en) * 1966-09-03 1970-02-03 Schubert & Salzer Maschinen Sensor-actuated strand clamping and strand return mechanism for spinning apparatus
US3526348A (en) * 1968-04-30 1970-09-01 Leesona Corp Yarn cutter assembly
US3718270A (en) * 1969-12-04 1973-02-27 Snia Viscosa Devices for picking-up, sucking and dragging textile filaments and yarns
US3751896A (en) * 1971-06-04 1973-08-14 Leesona Corp Yarn handling

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732611A (en) * 1956-01-31 planer
US2934884A (en) * 1956-06-01 1960-05-03 Wachovia Bank And Trust Compan Scavenger roll and flute holder
US3475891A (en) * 1962-10-11 1969-11-04 Asahi Chemical Ind Method of and apparatus for doffing yarns in the centrifugal pot spinning process
US3492804A (en) * 1966-09-03 1970-02-03 Schubert & Salzer Maschinen Sensor-actuated strand clamping and strand return mechanism for spinning apparatus
US3526348A (en) * 1968-04-30 1970-09-01 Leesona Corp Yarn cutter assembly
US3718270A (en) * 1969-12-04 1973-02-27 Snia Viscosa Devices for picking-up, sucking and dragging textile filaments and yarns
US3751896A (en) * 1971-06-04 1973-08-14 Leesona Corp Yarn handling

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974972A (en) * 1973-06-26 1976-08-17 Schubert & Salzer Maschinenfabrik Aktiengesellschaft Apparatus for forming a reserve winding on a yarn spool
US4132056A (en) * 1975-12-23 1979-01-02 Schubert & Salzer Open end spinning apparatus
US4165046A (en) * 1977-11-30 1979-08-21 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Doffing apparatus in spinning machine
US4496109A (en) * 1981-04-28 1985-01-29 Celanese Corporation Apparatus for cutting, aspirating and rethreading a traveling filamentary yarn
US5192032A (en) * 1990-10-31 1993-03-09 John Brown Inc. Automatic winding unit
US5568897A (en) * 1993-12-24 1996-10-29 Menegatto S.R.L. Cutter for cutting yarn in textile machines
EP1285983A1 (de) * 2001-08-22 2003-02-26 W. SCHLAFHORST AG & CO. Serviceaggregat für eine Kreuzspulen herstellende Textilmaschine

Also Published As

Publication number Publication date
FR2176957A1 (de) 1973-11-02
JPS496226A (de) 1974-01-19
BE797097A (fr) 1973-07-16
CH552080A (de) 1974-07-31
IT981435B (it) 1974-10-10
DE2214095A1 (de) 1973-10-04
FR2176957B3 (de) 1976-03-19

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