US3685267A - Thread clamping,releasing,and feeding mechanism for spinning apparatus - Google Patents

Thread clamping,releasing,and feeding mechanism for spinning apparatus Download PDF

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Publication number
US3685267A
US3685267A US718436A US3685267DA US3685267A US 3685267 A US3685267 A US 3685267A US 718436 A US718436 A US 718436A US 3685267D A US3685267D A US 3685267DA US 3685267 A US3685267 A US 3685267A
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US
United States
Prior art keywords
thread
withdrawing
rollers
roller
spinning
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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
Application number
US718436A
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English (en)
Inventor
Hans Landwehrkamp
Franz Schreyer
Karl Handschuch
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.)
Rieter Ingolstadt Spinnereimaschinenbau AG
Original Assignee
Schubert und Salzer Maschinenfabrik AG
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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
    • D01H4/50—Piecing arrangements; Control therefor for rotor spinning

Definitions

  • the mouth of an outlet tube may be shaped to terminate close-to the nip of the withdrawing rollers and may be flared longitudinally of the roller axes.
  • the withdrawing rollers are normally biased together and are movable out of engagement by a solenoid plunger reciprocated in response to a thread-sensing device to release the thread and provide access to the spinning apparatus outlet.
  • a drive roller which may be one of the withdrawing rollers, may simultaneously serve several spinning outlets. Individually operable sensors and plungers may disengage from the drive roller individual, drive-roller-engaging withdrawing rollers.
  • One of the withdrawing rollers may be cantilever mounted and its free end beveled to feed automatically thread dropped into the slot formed by the bevel to a position between the pair of withdrawing rollers forming a straight thread stretch between the outlet and thread winding rollers.
  • paratus which figure includes a diagrammatic representation of circuit controlmeans.
  • FIG. 4 in an end elevation of a different form of clamping mechanism with parts in section.
  • FIG. 5 is a side elevation. of thread-withdrawing mechanism including clamping apparatus for a plurality of spinning chambers, with parts broken away.
  • F IG. 6 is an end elevation of still a different form of clamping apparatus.
  • FIG. 7 is an c'levational detail of a drawing roll which can be used with any of the structures shown in FIGS. 1 through 6.
  • the restraining apparatus of the present invention is shown in connection with a rotary spinning chamber 2 enclosed in a housing 1 and having a'cover 11.
  • Fiber sliver S is fed to the spinning chamber collection channel 24 through feed rollers 5 and feed tube 51 extending through the cover 11.
  • the spun thread is withdrawn through a withdrawal passage provided within an upright withdrawal tube 6.
  • the thread F is pulled from the spinning chamber 2 through tube 6 by a pair of withdrawing rollers 3,3 and is wound into a spool 9 by winding roller 8.
  • Withdrawing rollers 3,3 are located closely adjacent to and directly above outlet 61 of the withdrawal tube.
  • the withdrawing rollers 3,3 also stop, but thread F is clamped between the stopped rollers and because there is no space between the withdrawing rollers and tube outlet 61, the rollers will not have pulled such thread out of the tube. Also because such rollers are so close to the tube end the thread will not spring up out of the tube when the spinning tension is released.
  • a sensor is inserted in the side of such tube a considerable distance below its outlet 61.
  • the sensor could be a photoelectric device responsive to the absence of a thread stretch between a light source on one side of the tube and a photoelectric cell diametrically opposite the light source.
  • a sensor 7 could be provided responsive to a decrease in tension in the thread, which would occur if the thread should break or if the speed of the spinning chamber rotation should be reduced. If the thread tension is decreased,
  • control 72 would complete a circuit with switch contact 7.1 to actuate control 72 and thereby effect deenergization of the spinning apparatus and particularly of the drive for withdrawing-rollers 3,3.
  • Control 72 might also actuate return mechanism for returning the broken thread end to the spinning chamber collection channel 24 and reenergize the spinning chamber and withdrawing roller drive, for example.
  • the Sequence of operations effected by control 72 would dependon the type of spinning apparatus used, whether it is a rotary spinning chamber, or an electrostatic or pneumatic spinning device, for example.
  • the primary function of control 72 for the purpose of the present invention is immediately to deenergize or disengage the drive for rollers 3,3 to prevent the trailing thread end from being drawn out of tube 6.
  • FIGS. 1 and 2 are cross-sectional profiles perpendicular to the line of contact I(' of rollers 3,3, such mouth is tapered inwardly or flared outwardly with the tapered tubewalls having concave curvature complemental to the curvature of the adjacent roller circumference.
  • FIG. 2 is a cross section through tube outlet 61 parallel to roller contact line K of FIG. 1 showing that the outlet is flared outwardly in an axial plane of the tube 6 which plane is parallel to the axes of the two-withdrawing rollers 3 and 3.
  • the widest portion of the flared outlet has an extent parallel to roller contact line K at least twice as great as the distance between such contact line and the rim of the outlet so that, when the end of the thread is located above the outlet rim, the thread end portion below the nip of the rollers will always be of shorter lengththan the width of the outlet opening.
  • This construction is particularly important when a thread break occurs too close to the rollers to prevent the thread end from passing between the rollers, or when a different type of thread is to be spun so that the previously spun thread has been pulled completely out of the machine and newstarting thread is to be supplied to the spinning chamber through the withdrawal tube.
  • a single spinning machine usually includes several spinning stations, each having a spinning chamber from which thread is' withdrawn through a tube 6.
  • one of the withdrawing rollers may be a single continuous drive roller 3 which will frictionally drive individual rollers 3' for each station.
  • Each pressure roller 3' has one end mounted in a beating carried by one end of a swingable arm 391. The other arm end is pivotally supported on a rod 39.
  • a torsion spring 38 connected between rod 39 and arm 391 biases such arm to press its roller 3 into engagement with drive roller 3.
  • winding roller 8 is a continuous roller cooperating with individual thread spools 9.
  • FIG. 3 illustrates a withdrawing roller mounting and thread return mechanism which are simple in construction and operation and which eliminate the necessity for reversing mechanism for the drawing rollers and for winding roller 8 and spool 9.
  • the nip of withdrawing rollers 31, 31' is perpendicular to the axis of withdrawal tube 6 and the rollers are located directly above and close to the tube outlet.
  • Roller 31 is preferably positively driven.
  • Roller 31 is driven by frictional' engagement with roller 31 and is mounted in floating bearings so that such roller can be moved into and out of engagement with roller 31 by reciprocation of the plunger of solenoid 32.
  • Thread take-up mechanism is provided in the form of a swingable arm 35 which is normally held in the raised full-line position by an electromagnet 36 attracting an armatureswingable with the arm so that thread F is guided between the rollers 31,31 and winding roller 8 in an angular path displaced laterally from a straight line joining such drawing rollers and winding roller 8.
  • sensor 7' engages switch contact 71 to actuate control 72, such control first effects deenergization of rollers 31,31 and then, after a preset time interval, deenergizes solenoid 32 so that its plunger and roller 31' are moved to the right to release the thread previously clamped between the two withdrawing rollers.
  • electromagnet 36 is 'deenergized by control 72 to release the armature of arm 35- so that such arm will swing down into the broken line position and the thread will assume the straight line position indicated in broken lines in FIG. 3 to provide sufficient reserve thread to return the thread end to the collection channel of the spinning chamber.
  • solenoid 32 When spinning is resumed, solenoid 32 isagain energized to press roller 31 into engagement with roller 31.
  • Mechanism for gradually swinging arm 35 upward againinto its raised position may be provided, or the withdrawing rollers may be started slightly ahead of the winding roller 8 and spool 9 to provide slack to be taken up by swinging arm 35 back into the solid line position.
  • roller 31 may be a continuous drive roller fora plurality of spinning stations and individual pressure rollers 31', solenoids 32, take-up arms 35 and sensors 7 can be provided for each station so as to be responsive to individual thread breaks and thereby avoid interrupting several spinning stations in response to a break at one station.
  • the withdrawing rollers can be spaced from the withdrawaltube while satisfactorily preventing removal of the thread from the tube without the necessity of providing take-up mechanism between the tube outlet and the withdrawing rollers if the distance between the tube outlet tip and the withdrawing roller contact line K is no more than one-third of the'length of withdrawal tube 6. If the withdrawing rollers are offset slightly from the axis of tube 6, the spinning operation can be more readily observed by an operator. In addition, accessibility to the outlet of the withdrawal tube, such as for machine service, is facilitated if at least one of the rollers is mounted in floating bearings so that it can be moved away from the withdrawal tube, such as shown in FIG. 3.
  • FIG. 4 mechanism is shown whereby both withdrawing rollers 311 and 311 can be moved away from the withdrawal tube 6.
  • Withdrawing roller 311 is mounted on one end of a swinging arm 393, the opposite end of such arm being pivotably mounted by a pin 39' to the machine frame.
  • Roller 311 is mounted on a swinging arm 392, the opposite end of which arm is also mounted on pivot pin 39'.
  • a tension spring 37 connected between swinging arms 392 and 393 normally biases the rollers into engagement.
  • Withdrawing roller3ll is biased into engagement with a separate fixed drive roller 310, which may drive the withdrawing rollers of several spinning stations, by a tension spring 34 connected between arm 393 and the machine frame.
  • a common rod may mount several swinging arm pairs, similar to rod 39 in FIG. 5.
  • the withdrawing rollers are stopped without stopping roller 310 by disengaging roller 311 from drive roller 310.
  • a lifting element 33 which may be a solenoid plunger or a fluid-actuated plunger for example.
  • the plunger presses against arm 392, mounting roller 311', to pivot such arm about pivot pin 39'. If arm 392 is swung in a clockwise direction as seen in FIG. 4, spring 37 will pull arm 393 along with arm 392 so that roller 311 is lifted off drive roller 310. As the plunger is further extended to the upper left of FIG.
  • a projection 394 on arm 393 will engage a stop 395 so that continued extension of the plunger will swing arm 392 away from arm 393 to disengage roller 31 1 from roller 311 and thereby release thread clamped by the withdrawing rollers for returning a thread end to the spinning chamber.
  • the withdrawing roller axes may not be desirable for the withdrawing roller axes to extend parallel to the axis of a continuous drive roller.
  • F IG. 6 discloses drawing mechanism which would be suitable for spinning stations which are offset from the single drive mechanism.
  • the shaft of one of the pair of rollers 312 is mounted in a fixed bearing and such shaft carries a gear 313 driven by a worm 314 rotated by shaft 310. Consequently, the contact line K of the withdrawing rollers is perpendicular to the axis of drive roller 310.
  • Such an arrangement of the withdrawing rollers also provides better accessibility to the withdrawal tube 6 and its spinning chamber because the withdrawing rollers and their drive mechanism are offset to one side of the station so that the remaining three sides are unobstructed.
  • a starting thread When a spinning machine is to be started with a different color or texture of fiber, for example, a starting thread must be supplied through withdrawal tube 6 to the spinning chamber. If each spinning station is provided with at least one withdrawing roller 3 mounted on a cantilever shaft, such as shown in FIG. 5, the starting thread can simply be pulled across the end of the roller into engagement with the drive roller 3 and then pulled axially along the drive roller until the thread is engaged between the two rollers. The thread must usually be pulled in the axial direction until the thread stretch between spool 9 and withdrawal tube 6 assumes a straight line. This starting procedure is facilitated if the straight line position of thread F, as shown in FIG. 5, intersectsthe contact line K of the withdrawing rollers near the free end of a cantilever roller 3' to shorten the axial distance along which the machine operator each withdrawing roller may have a beveled circumferential end to provide a deeper slot.
  • the thread stretch F spanning from the I winding roller 8 to the outlet of withdrawal tube 6 may be located in the desired spinning position between the rollers .of the withdrawing roller pair by providing means for reciprocating a cantilever withdrawing roller lengthwise of its axis.
  • arms 391 mounting rollers 3' may be slidable along rod 39 to the left from the positions shown so that the free ends of the rollers would be at-the left of the thread line F.-
  • the operator can simply drop the thread into the tube. Such thread would auto matically assume the position indicated by the broken line F.
  • Cantilever pressure roller 3 would then be shifted axially along rod 39 to the right into the position shown in'FIG. 3. If desired the rollers 3' at all of the stations could be shifted simultaneously by moving rod 39 lengthwise.
  • either one or both of the withdrawing rollers may be axiallyshiftable to locate the thread between the rollers.
  • the withdrawing rollers are in their spaced thread-releasing positions during such lengthwise shifting. (Further reciprocating lengthwise shifting of the drawing rollers while the thread withdrawal operation may be provided for elimination of extreme wear of a single circumferential line of the withdrawing rollers).
  • the withdrawing mechanism shown in FIG. 6 further facilitates the starting operation because in this construction the operator need only drop the thread end into tube 6 and lay a stretch of the thread in the flaring groove between the free ends of rollers 312.
  • the axes of the withdrawing rollers are arranged so that the contact line K between them is perpendicular to the common tangent to winding roller 8, spool 9, a thread guide element which may be a roller 81 spaced from roller 8 and'the withdrawing rollers.
  • Such tangent preferably intersects the axis of withdrawal tube 6 at the outlet inclined from their free ends.
  • the withdrawing roller arrangement of the present invention provides a simple construction for clamping thread and thereby maintaining the thread in the withdrawal tube of an open-end spinning machine and can also effect return of the thread toward the spinning chamber in some instances without additional clamping devices.
  • the arrangement of the present invention is considerably more compact than withdrawing and thread-clamping mechanism which has been provided previously. The mechanism disclosed herein can be readily and effectively used with all open-end spinning machines.
  • Thread control mechanism for spinning machines including a thread withdrawal passage for withdrawing thread out of a continuous ringless spinning mechanism and a pair of withdrawing rollers contacting along a line for withdrawing thread through such thread withdrawal passage, wherein the improvement comprises means mounting at least one of the withdrawing rollers in cantilever fashion by one axial end to leave the opposite axial end of such roller free, and the rollers being disposed so that the thread withdrawal passage axis intersects the contact line of the withdrawing rollers for movement of a stretch of thread, extending from the thread withdrawal passage, in a direction transversely of its length past said free axial end of said cantilevermounted roller into position between the withdrawing rollers.
  • Thread control mechanism for spinning machines having a plurality of spinning stations, each station including a thread withdrawal passage for withdrawing thread out of a continuous ringless spinning mechanism and a pair of withdrawing rollers located closely adjacent to such thread withdrawal passage for withdrawing thread therethrough, a drive shaft common to said plurality of spinning stations and driving one withdrawing roller of each pair, the other withdrawing roller of each pair being a pressure roller engageable with the withdrawing roller driven by said drive shaft, and separate disengaging means for each station operable individually initially to withdraw conjointly both of said withdrawing rollers of the pair of withdrawing rollers at a selected spinning station from said drive shaft independently of the withdrawing rollers at the other spinning stations and thereafter to disengage from each other said withdrawing rollers of the withdrawing roller pair at such selected spinning station.
  • Thread control mechanism for spinning machines comprising a plurality of spinning stations, each station including a thread winding means having a thread spool and a winding. roller engageablev with such spool, a
  • each cantilever-mounted pressure roller has a beveled circumference to facilitate entrance of a thread between such cantilever-mounted pressure roller and the other roller of the pair of withdrawing rollers.
  • Thread control mechanism for spinning machines comprising a thread withdrawalpassage for withdrawing thread out of a continuous ringless spinning mechanism, and a pair of withdrawing rollers located closely adjacent to the thread withdrawal passage mouth, the mouth of said thread withdrawal passage adjacent to said withdrawing rollers being flared outwardly only in that axial plane of said thread withdrawal passage which is parallel to the axes of said withdrawing rollers and said thread withdrawal passage mouth is not flared in the axial plane of said thread withdrawal passage perpendicular to the axes of said withdrawing rollers.
  • Thread control mechanism for spinning machines comprising a thread withdrawal tube having a passage for withdrawing thread out of a continuous ringless spinning mechanism, and a pair of withdrawing rollers located closely adjacent to said thread withdrawal passage, said thread-withdrawal tube having an end adjacent to said withdrawing rollers located between and conforming to the rounding of the rollers of said pair of withdrawing rollers, said passage being of substantially uniform width throughout its entire length in the axial plane of saidftube perpendicular to the axes of said withdrawing rollers to locate the end of said passage close to the nip of said rollers.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US718436A 1967-04-18 1968-04-03 Thread clamping,releasing,and feeding mechanism for spinning apparatus Expired - Lifetime US3685267A (en)

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Application Number Priority Date Filing Date Title
DESC040567 1967-04-18

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US3685267A true US3685267A (en) 1972-08-22

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US718436A Expired - Lifetime US3685267A (en) 1967-04-18 1968-04-03 Thread clamping,releasing,and feeding mechanism for spinning apparatus

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US (1) US3685267A (de)
JP (1) JPS543977B1 (de)
BE (1) BE713844A (de)
CH (1) CH463338A (de)
CS (1) CS158216B2 (de)
DD (1) DD67334A5 (de)
DE (1) DE1685994B1 (de)
ES (1) ES352656A1 (de)
FR (1) FR1568254A (de)
GB (1) GB1187343A (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3879926A (en) * 1972-08-05 1975-04-29 Skf Kugellagerfabriken Gmbh Method and apparatus for controlling the rejoining of thread in an open ended spinning machine
US3911658A (en) * 1972-12-14 1975-10-14 Platt International Ltd Method of and apparatus for the piecing up of yarns
US4041685A (en) * 1973-11-16 1977-08-16 Zinser Textilmaschinen Gmbh Process and apparatus for reattachment of a thread in an open-end spinning machine
US4392343A (en) * 1980-10-08 1983-07-12 Alan Parker Friction spinning apparatus
US4689945A (en) * 1983-05-20 1987-09-01 Rieter Machine Works, Ltd. Open-end yarn piecer
US4918913A (en) * 1987-06-12 1990-04-24 Maschinenfabrik Rieter Ag Method of, and device for, performing a start spinning operation for spinning of a yarn in a friction spinning apparatus
US5238202A (en) * 1992-04-15 1993-08-24 Intronics, Inc. Yarn tensioning apparatus
US5586427A (en) * 1994-09-03 1996-12-24 Rieter Ingolstadt Spinnereimaschinenbau Ag Device for adjusting the contact pressure of a pressure roller against the draw-off shaft of a rotor spinning machine
US20050230341A1 (en) * 2004-04-14 2005-10-20 Maohua Dong Child resistant closure system including reversible cap and container

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2711554C2 (de) * 1977-03-17 1985-09-19 W. Schlafhorst & Co, 4050 Mönchengladbach Automatische Anspinnvorrichtung für eine Offenend-Rotor-Spinnmaschine
DE2939706C2 (de) * 1979-09-29 1985-10-03 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Verfahren und Vorrichtung zum Einsetzen des Fadenabzuges an einer Offenend-Spinnvorrichtung
DE3246993A1 (de) * 1982-12-18 1984-06-20 Schubert & Salzer Maschinen Verfahren und vorrichtung zum anspinnen eines fadens in einer offenend-spinnvorrichtung
GB2178069B (en) * 1983-05-20 1988-06-08 Rieter Ag Maschf Open-end yarn piecer
DE19926675A1 (de) * 1999-06-11 2000-12-14 Schlafhorst & Co W Verfahren zum Offenend-Spinnen und Offenend-Spinnvorrichtung
DE102006004894B4 (de) * 2006-02-03 2018-01-18 Saurer Germany Gmbh & Co. Kg Hilfsfadenführer zum Changieren eines laufenden Fadens im Bereich einer Fadenabzugseinrichtung einer Kreuzspulen herstellenden Textilmaschine
CH705308A1 (de) * 2011-07-25 2013-01-31 Rieter Ag Maschf Verdichtungsvorrichtung für eine Spinnmaschine.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59032C (de) * K. OERTEL in Hamm i. W Zirkel zum Anreifsen der Mitte zwischen zwei Punkten
DE44344C (de) * 1887-11-04 1888-08-28 müller & zschille in Chemnitz, Lerchenstr. 15 Ueberwendlich - Nähmaschine
DE1115163B (de) * 1957-12-30 1961-10-12 Konrad Goetzfried Verfahren und Vorrichtung zum pneumatischen Spinnen eines Fadens
DE1130741B (de) * 1960-03-14 1962-05-30 Lawrence Murray Keeler Vorrichtung zum Verspinnen von in Form einer Lunte (Vorgarn) zugefuehrten Fasern

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3879926A (en) * 1972-08-05 1975-04-29 Skf Kugellagerfabriken Gmbh Method and apparatus for controlling the rejoining of thread in an open ended spinning machine
US3911658A (en) * 1972-12-14 1975-10-14 Platt International Ltd Method of and apparatus for the piecing up of yarns
US4041685A (en) * 1973-11-16 1977-08-16 Zinser Textilmaschinen Gmbh Process and apparatus for reattachment of a thread in an open-end spinning machine
US4392343A (en) * 1980-10-08 1983-07-12 Alan Parker Friction spinning apparatus
US4689945A (en) * 1983-05-20 1987-09-01 Rieter Machine Works, Ltd. Open-end yarn piecer
US4918913A (en) * 1987-06-12 1990-04-24 Maschinenfabrik Rieter Ag Method of, and device for, performing a start spinning operation for spinning of a yarn in a friction spinning apparatus
US5238202A (en) * 1992-04-15 1993-08-24 Intronics, Inc. Yarn tensioning apparatus
WO1993021096A1 (en) * 1992-04-15 1993-10-28 Intronics, Inc. Yarn tensioning apparatus
US5301895A (en) * 1992-04-15 1994-04-12 Intronics, Inc. Yarn tensioning apparatus
US5586427A (en) * 1994-09-03 1996-12-24 Rieter Ingolstadt Spinnereimaschinenbau Ag Device for adjusting the contact pressure of a pressure roller against the draw-off shaft of a rotor spinning machine
US20050230341A1 (en) * 2004-04-14 2005-10-20 Maohua Dong Child resistant closure system including reversible cap and container

Also Published As

Publication number Publication date
CH463338A (de) 1968-09-30
FR1568254A (de) 1969-05-23
ES352656A1 (es) 1969-07-16
CS158216B2 (de) 1974-10-15
DD67334A5 (de) 1969-06-05
BE713844A (de) 1968-10-18
JPS543977B1 (de) 1979-02-28
GB1187343A (en) 1970-04-08
DE1685994B1 (de) 1972-05-25

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