US3815347A - Apparatus for splicing a yarn with newly spun yarn in open end spinning - Google Patents

Apparatus for splicing a yarn with newly spun yarn in open end spinning Download PDF

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Publication number
US3815347A
US3815347A US00255051A US25505172A US3815347A US 3815347 A US3815347 A US 3815347A US 00255051 A US00255051 A US 00255051A US 25505172 A US25505172 A US 25505172A US 3815347 A US3815347 A US 3815347A
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United States
Prior art keywords
yarn
take
withdrawal
control device
roller
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Expired - Lifetime
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US00255051A
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English (en)
Inventor
J Nemec
L Bures
J Rajnoha
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Elitex Zavody Textilniho
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Elitex Zavody Textilniho
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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
    • D01H4/42—Control of driving or stopping

Definitions

  • the guides release the yarn which now extends along a shorter path between a withdrawal roller and a take-up roller which are actuated. by the control device in the normal position.
  • the slack in the yarn end facilitates the connection between the yarn end and the newly spun yarn in the spinning chamber.
  • the present invention is concerned with a method of splicing or piecing together yarn in open end spinning machines in which a yarn end is introduced by the action of underpressure at a predetermined length into a rotating spinning chamber, and thereafter withdrawn from the spinning chamber by withdrawing means, and wound upon a take-up spool.
  • the present invention also relates to an apparatus for carrying out the splicing in a simple and efficient manner.
  • yarn splicing is performed either manually by an operator, or automatically.
  • the yarn end is inserted into the spinning chamber by the operator, and as soon as the yarn end in the rotary spinning chamber contacts the rope or ribbon of fibers, the yarn is withdrawn from the spinning chamber and wound upon a winding bobbin or spool which has been brought into contact with a rotating winding drum by theoperator. Thereafter, the withdrawn yarn is slipped between two cooperating withdrawing rollers, and the spinning operation is carried out.
  • This operation is carried out upon starting of the machine, but also when a yarn breakage has been occurred in an individual spinning unit of the plurality of spinning units forming the spinning machine.
  • a yarn breakage occurs, and is to be corrected, the end of the broken yarn is introduced into the outletof the spinning chamber, and is sucked by the negative pressure in the'rotary spinning chamber to the annular collecting surface where fibers are deposited.
  • the tension indicates that the yarn end has connected in the spinning chamber with the newly formed fiber rope or ribbon. In this manner, a successful yarn splicing is indicated. However,.at this moment, the operator must bring the takespool.
  • the open end spinning machine manufactures a continuous yarn so that the contact of the yarn end during repeated piecing together with the separate fiber ribbon, should be as short as possible.
  • the yarn is manually spliced, it is necessary to pay far more attention to the actual splicing operation than to the length of the connecting portion between the fiber ribbon and the yarn end, a problem which is partially solved by the automatic simultaneous yarn splicing in all spinning units of the machine, as deup spool into contact with the continuously rotating be withdrawn from the spinning chamber, is slipped into the nip or bight of two withdrawing rollers.
  • the operation is simultaneously performed in all spinning units upon a stoppage of the machine requiring a restarting of the machine.
  • the open end spinning machine is provided with a device which performs within predetermined and adjusted time intervals, depending on the yarn length required for the splicing operation, a changing of the direction of rotation of both the withdrawing and the wind-up rollers whereby the yarn ends are introduced into the spinning chambers of all spinning units simultaneously. Meanwhile, feeding of separate fibers into the rotary spinning chamber is started, and the yarn end introduced into the spinning chamber contacts the fiber ribbon.
  • Another object of the invention is a semi-automatic yarn splicing operation carried out by a manually operated control device.
  • Another object of the invention is to provide a manually operated control device which automatically provides slack in a yamend to be spliced, as required for connecting the yarn end with the fiber ribbon in the rotary spinning chamber.
  • Another object of the invention is to obtain by opera tion of the control device, the transport of the spliced yarn end by withdrawal means and the winding up on a take-up spool.
  • the present invention provides a semi-automatic method in which a yarn section between the withdrawal roller and the winding roller is displaced along a devious path, and then released so that the slack of the yarn section can be used for fortning a connection between the yarn and the fiber ribbon in the rotary spinning chamber.
  • the guiding of the yarn along the devious path is effected for a control device having guides for the yarn and being turnable between an inserting position in which the guides guide the yarn along a devious path, and an operative position in which the guides release the yarn.
  • the withdrawal means and the take-up means are actuated so that the automatically spliced yarn is transported and wound
  • the apparatus of the invention includes a control device which is mounted between the withdrawing roller means and the take-up roller means of the machine, and is angularly movable in a direction perpendicular to the axes of rotation of the withdrawing and take-up rollers.
  • One embodiment of the apparatus comprises withdrawal means rotating in a withdrawal direction and having an inoperative position, and a withdrawing posi tion for withdrawing yarn from a rotary spinning chamber; take-up means having an inoperative position, and a winding up position for winding up a yarn withdrawn by said withdrawal means; and a control device disposed between the withdrawal means and the take-up means, and having a yarn inserting position for guiding a yarn from the take-up means along a devious path to the withdrawal means, and for placing the take-up means and the withdrawal means in the inoperative position so that the end of the guided yarn can be inserted into the rotary spinning chamber.
  • the control device has also an operative position for guiding the yarn along a path shorter than'the devious path, and for placing the withdrawal means in the withdrawing position and take-up means in the take-up position. Consequently, the yarn inserted into the outlet of the spinning chamber connects with the newly spun yarn in the spinning chamber, taking up the slack in the yarn, and is transported by the withdrawing means to the take-up means.
  • control device includes a yarn guiding and withdrawal controlling first part mounted on a support shaft, and a take-up controlling second part also mounted on the support shaft and connected with the first part for angular movement together between first and second relative angular positions in which the control device is in the inserting and operative positions, respectively.
  • Guide means for the yarn are mounted on the first part, together with a control roller which cooperates with a withdrawal roller in the operative position of the control device.
  • the second part mounts a support roller which holds the take-up spool in an inoperative position spaced from a winding roller when the first and second parts are in the first angular position corresponding to the inserting position of the control device.
  • the support roller releases the take-up spool for contact with the continuously rotating winding roller so that the yarn is wound upon the take'up spool while the control device is in the operative position.
  • FIG. 1 is a schematic side elevation, partially in section, illustrating an embodiment of the invention in a yarn inserting and splicing condition
  • FIG. 2 is a schematic side elevation, partially in section, illustrating the embodiment of FIG. 1 in an operative position in which spliced yarn is wound up by a take-up spool;
  • FIG. 3 is a schematic side elevation, taken from the opposite side as compared with FIGS. 1 and 2, and illustrating the apparatus in the inserting and splicing position;
  • FIG. 4 is a side elevation corresponding to FIG. 3, but illustrating the apparatus in the operative position in which the spliced yarn is wound up on the take-up spool;
  • FIG. 5 is a fragmentary perspective view illustrating the control device used in the apparatus shown in FIGS. 11 to 4 in the yarn inserting and splicing position;
  • FIG. 6 is a fragmentary perspective view illustrating the control device of FIG. 5 in an operative position in which the yarn is wound up on a take-up spool.
  • FIG. 2 illustrates a normal operative position of the apparatus.
  • FIG. 1 illustrates a yarn inserting position of the apparatus in which control roller 19 is spaced from the continuously rotating withdrawing roller 1 so that no yarn is transported.
  • a support roller 31 has been operated in a manner which will be described hereinafter to support the take-up spool 30, so that the same is not driven by the continuously operating winding roller 2.
  • the control device 3 includes a first part 7 mounted on a support shaft 4 for angular movement, and a second part 8 also mounted on support shaft 4 for angular movement.
  • the first part 7 includes a lever arm 701 mounted on support shaft 4 for angular movement, and a control lever 702 mounted on lever arm 701 for angular movement about a pivot 18.
  • Control lever 702 carries the control roller 19 which is correlated with the withdrawal roller 1, and a yarn guide 28.
  • lever arm 701 is provided with a pivot 23 on which a turntable portion 33 of a yarn guide 321 is mounted, and connected by a link 34 and a pivot 42 with the arm 8 of the control device 3.
  • a clamping means 20 having a projection 22 is also mounted on lever arm 701 secured by the pivot screw 23 and pivot 18.
  • the resilient element 9, moves between the positions shown in FIGS. 1 and 2 when the parts 7 and 8 are displaced between the angular positions shown in FIGS; 1 and 2 so that the control device 3 is arrested in two relative angular positions set by manual operation of the part 7, and more specifically of the control lever 702 which has a finger engaging end portion 7.03 shown in FIGS. 5 and 6.
  • the relative angular position of the two lever parts 7 and 8 is determined by fixed stop 13 including a platemounted on a holding means 14 which is fixedly secured to supporting shaft 4.
  • a resilient stop 15 is secured to the holding plate 13, and partly covers an opening 17 in the holding plate 13. Stop 15 consists of one or several leaf springs with outwardly bent end portions.
  • a lateral projection 16 on sleeve 10 passes through opening 17 in the fixed stop plate 13, for securing the two lever parts 7, 8 in the inserting position of the control device 3 shown in FIG. 1.
  • the projection 16 also assures a synchronous displacement of the two parts 7, 11 when the same are angularly displaced to the operative position shown in FIG. 2.
  • the end of the part 8 is formed as a support lever which partly surrounds the winding roller 2, and carries at its upper end, .a support and braking roller 31 which As noted above, the control lever 702 is mounted on the lever arm 701 and forms with the same the part 7.
  • Control lever 702 has a slot extending in circumferential direction in relation to the pivot 18.
  • a screw 23 is secured to a portion of lever arm 702, and has a head located in slot 25, and engaged by a ball 26 biassed by a spring 27 so that the control lever 702 can be snapped between the position shown in FIG. 1 and the position shown in FIG. 2.
  • -control roller 19 engages the clamping means 20, 22, see also FIGS. 3 and 4, so thatthe respective portion of yarn 21 is clamped.
  • clamping means 20, 22 must be carried out only in the inserting position of the device, and clamping means 20, 22 releases control roller 19 in the operative position of the apparatus so that it can rotate driven by the withdrawal roller 1 as required for transporting the yarn 21 I through yarn guide 28, and over roller 19 to yarn guide 321 which, as explained above, is displaced by the linkage 34, best seen in FIGS. 3 and 4 when the relative angular position between parts 7 and 8 is changed.
  • the guides 28 and 321 turn to inoperative positions releasing the yarn 21 which extends now along a shorter path, producing some slack in the yarn.
  • a splicing operation according to the present inven tion is performed as follows:
  • parts 7 and 8 are in a first angular position in which they were placed by manual operation of part 7 by means of control lever 702.
  • Control roller 19 and withdrawal rol ler 1 are spaced and do not cooperate, and support roller 31 holds the take-up spool at a distancefrom the continuously rotating winding roller 2.
  • control lever 702 is manually turned about pivot 18 so that clamping means 20, 22 engages yarn 21 on control roller 19 and clamps yarn 21 which is thus secured against displacement and sliding on the surface of control roller 19.
  • the yarn end is inserted into the outlet of the rotary spinning chamber 35 which exerts suction.
  • the yarn 21 is disposed along a devious path, taking up a greater length of yarn as required between the take-up spool 30 and the withdrawing roller 1 in the operative position shown in FIGS. 2 and 4.
  • the part 7 of the control device 3 is now manually operated and turned about supporting shaft 4 so that the control roller 19 is moved toward withdrawal roller 1 which brings the guide 28 to the inoperative position shown in FIGS. 2 and 4 in which guide 24 releases yarn 21.
  • the method and apparatus of the invention has the advantage that the time required for splicing a yarn in a spinning unit is much shorter than in prior art apparatus, and that the yarn splicing takes place with absolute reliability so that it need not be repeated.
  • Another advantage of the apparatus of the invention is that it permits yarn splicing by a very easy manual operation, while the quality of the splicing or piecing together is very high.
  • the yarn splicing operation can be performed even at very high withdrawing speeds of the yarn, in which manual splicing without the control device of the invention is practically impossible.
  • Apparatus for splicing a yarn with newly spun yarn comprising a rotary spinning chamber; withdrawal means rotating in a withdrawal direction and having an inoperative position, and a withdrawing position for withdrawing yarn from said spinning chamber; take-up means having an inoperative position.
  • a control device disposed between said withdrawal means and said take-up means, and having a yarn inserting position for guiding a yarn from said take-up means along a devious path to said withdrawal means, and for placing said take-up means and said withdrawal means in said inoperative positions so that the end of said guided yarn can be inserted into said spinning chamber, said control device having an operative position for guiding said yarn along a path shorter than said devious path so that said yarn has slack, and for placing said withdrawal means in said withdrawing position and said take-up means in said take-up position so that the inserted yarn end connects with the newly spun yarn in said spinning chamber taking up slack, and is transported to said take-up means; and supporting means, including a support shaft having a main axis perpendicular to said parallel axes, and supporting said control device for angular movement about said main axis between said positions, said control device including a yarn guiding and withdrawal controlling first
  • said with drawal means includes a withdrawal roller; wherein said take-up means include a winding roller; wherein said rollers have parallel axes; further comprising supporting means including a support shaft having a main axis perpendicular to said parallel axes, and supporting said control device for angular movement about said main axis between said inserting position and said operative position.
  • said resilient means includes a spring having ends connected with said first and second parts, respectively, and a sleeve enveloping said spring and having a lateral locking projection; wherein said supporting means includes a locking member with an opening in which said locking projection is located in said inserting position for locking said first and second parts in said first relative angular position.
  • control device includes first and second parts moving relative to each other between first and second angular positions when said control device is in said inserting and operative positions, respectively; and guide means mounted on said first part and guiding said yarn along said devious path in said first angular position, and releasing said yarn in said second angular position when said control device is in said operative position.
  • Apparatus for splicing a yarn with newly spun yarn comprising a rotary spinning chamber; withdrawal means rotating in a withdrawal direction and having an inoperative position, and a withdrawing position for withdrawing yarn from said spinning chamber; take-up means having an inoperative position, and a winding-up position for winding up a yarn withdrawn by said withdrawal means; and a control device disposed between said withdrawal means and said take-up means, and having a yarn inserting position for guiding a yarn from said take-up means along a devious path to said withdrawal means, and for placing said take-up means and said withdrawal means in said inoperative positions so that the end of said guided yarn can be inserted into said spinning chamber, said control device having an operative position for guiding said yarn along a path shorter than said devious path so that said yarn has slack, and for placing said withdrawal means in said .withdrawing position and said take-up means in said take-up position so that the inserted yarn end connects with the newly spun yarn in said spinning chamber taking up said sl
  • said first part includes guide means for guiding the yarn along said devious path in said first angular position and being retracted from said yarn in said second angular position so that said yarn extends along said shorter path between said withdrawal means and said take-up means in said second angular position.
  • said withdrawal means includes a continuously rotating withdrawal roller on which said control roller abuts in said second angular position of said first part while said control lever is in said second control position; and wherein said yarn guide places said yarn between said control roller and withdrawal roller during movement of said first part to said second angular position so that said yarn is withdrawn in said operative position of said control device.
  • said guide means include a yarn guide mounted on said first part for angular movement, a link connected at one end with said yam guide, and a pivot connecting the other end of said link with said second part so that said yarn guide moves between a yarn guiding position and an inoperative position when said first and second parts move between said first and second angular positions, respectively.
  • said guide means include an other yarn guide mounted on said first part for guiding said yarn along said devious path in said first angular position, and being retracted from said yarn in said second angular position of said first and second parts when said control device is in said operative position.
  • said second part includes a support lever means mounted on said supporting shaft, and a support roller on the end of said lever means; wherein said take-up means include a continuously rotating winding roller and a takeup spool; wherein said support roller supports in said first angular position of said first and second parts said take-up spool spaced from said winding roller, and permits abutment of said take-up spool on said winding roller in said second angular position of said first and second parts so that said yarn is wound up on said takeup spool in said operative position of said control device.
  • Apparatus as claimed in claim 11 wherein said take-up means include a lever arm rotatably supporting said take-up spool and biassed by gravity to move said take-up spool in abutment with said support roller and said winding roller.
  • Apparatus for splicing a yarn with newly spun yarn comprising a rotary spinning chamber; withdrawal means rotating in a withdrawal direction and having an inoperative position, and a withdrawing position for withdrawing yarn from said spinning chamber;
  • take-up means having an inoperative position, and a winding-up position for winding up a yarn withdrawn by said withdrawal means; and a control device disposed between said withdrawal means and said take-up means, and having a yarn inserting position for guiding a yarn from said take-up means along a devious path to said withdrawal means, and for placing said take-up means and said withdrawal means in said inoperative positions so that the end of said guided yarn can be inserted into said spinning chamber, said'control device having an operative position for guiding said yarn along a path shorter than said devious path so that said yarn has slack, and for placing said withdrawal means in said withdrawing position and said take-up means in said take-up position so that the inserted yarn end connects with the newly spun yarn in said spinning chamber taking up said slack, and is transported to said take-up means, said controldevice including first and second parts moving relative toeach other between first and second'angular positions when said control device is in said inserting and operative positions, respectively, guide means mounted on said first part

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US00255051A 1971-05-24 1972-05-19 Apparatus for splicing a yarn with newly spun yarn in open end spinning Expired - Lifetime US3815347A (en)

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CS3772*BA CS162892B1 (nl) 1971-05-24 1971-05-24

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US (1) US3815347A (nl)
JP (1) JPS5228898B1 (nl)
CH (1) CH541001A (nl)
CS (1) CS162892B1 (nl)
DD (1) DD98700A1 (nl)
DE (1) DE2217167C2 (nl)
FR (1) FR2138983B1 (nl)
GB (1) GB1359754A (nl)
IT (1) IT955574B (nl)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911658A (en) * 1972-12-14 1975-10-14 Platt International Ltd Method of and apparatus for the piecing up of yarns
US4041684A (en) * 1975-09-18 1977-08-16 W. Schlafhorst & Co. Device for automatically joining a thread for spinning
US4248037A (en) * 1979-10-02 1981-02-03 Platt Saco Lowell Limited Yarn positioning means for open-end spinning machine piecing apparatus
US4576342A (en) * 1983-06-10 1986-03-18 Rieter Machine Works Limited Apparatus for lifting a wound yarn package
CN106167930A (zh) * 2015-05-20 2016-11-30 里特捷克有限公司 气流纺纱机和用于在气流纺纱机的工作站处恢复纺纱的方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2536991A1 (de) * 1975-08-20 1977-03-03 Schlafhorst & Co W Vorrichtung zum einstellen einer ruecklaeufigen drehbewegung einer spule
JPS5454100U (nl) * 1977-09-26 1979-04-14
CS241423B1 (en) * 1983-05-16 1986-03-13 Jiri Nemec Device for automatic yarn return from take-up bobbin

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3455095A (en) * 1967-09-26 1969-07-15 Tmm Research Ltd Spinning of textile yarns
US3695017A (en) * 1969-03-15 1972-10-03 Daiwa Spinning Co Ltd Automatic yarn piecing apparatus for spindleless spinning machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT291821B (de) * 1966-08-24 1971-07-26 Rieter Ag Maschf Einrichtung zum Aufbauen und Rückspeisen einer Garnreserve an einer Spinnkammer-Spinnvorrichtung
DE1807023A1 (de) * 1967-12-01 1969-06-12 Vyzk Ustav Bavlnarsky Vorrichtung zum Wiederanspinnen von Garn in einer Maschine zum kontinuierlichen ringlosen Feinspinnen
BE759650A (fr) * 1969-12-03 1971-04-30 Schubert & Salzer Maschinen Procede et dispositif pour la filature de rubans de fibres

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3455095A (en) * 1967-09-26 1969-07-15 Tmm Research Ltd Spinning of textile yarns
US3695017A (en) * 1969-03-15 1972-10-03 Daiwa Spinning Co Ltd Automatic yarn piecing apparatus for spindleless spinning machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911658A (en) * 1972-12-14 1975-10-14 Platt International Ltd Method of and apparatus for the piecing up of yarns
US4041684A (en) * 1975-09-18 1977-08-16 W. Schlafhorst & Co. Device for automatically joining a thread for spinning
US4248037A (en) * 1979-10-02 1981-02-03 Platt Saco Lowell Limited Yarn positioning means for open-end spinning machine piecing apparatus
US4576342A (en) * 1983-06-10 1986-03-18 Rieter Machine Works Limited Apparatus for lifting a wound yarn package
CN106167930A (zh) * 2015-05-20 2016-11-30 里特捷克有限公司 气流纺纱机和用于在气流纺纱机的工作站处恢复纺纱的方法

Also Published As

Publication number Publication date
GB1359754A (en) 1974-07-10
IT955574B (it) 1973-09-29
CS162892B1 (nl) 1975-07-15
JPS5228898B1 (nl) 1977-07-29
DE2217167C2 (de) 1983-03-17
DD98700A1 (nl) 1973-07-12
FR2138983B1 (nl) 1974-12-27
CH541001A (de) 1973-08-31
FR2138983A1 (nl) 1973-01-05
DE2217167A1 (de) 1972-12-07

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