US3885378A - False twisting apparatus - Google Patents

False twisting apparatus Download PDF

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Publication number
US3885378A
US3885378A US460459A US46045974A US3885378A US 3885378 A US3885378 A US 3885378A US 460459 A US460459 A US 460459A US 46045974 A US46045974 A US 46045974A US 3885378 A US3885378 A US 3885378A
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United States
Prior art keywords
spindles
thread
false
cam
threads according
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
US460459A
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English (en)
Inventor
Friedrich Schuster
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.)
IHO Holding GmbH and Co KG
Original Assignee
Kugelfischer Georg Schaefer and Co
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Assigned to FAG KUGELFISCHER GEORG SCHAFER KOMMANDITGESELLSCHAFT AUF AKTIEN (KGAA) reassignment FAG KUGELFISCHER GEORG SCHAFER KOMMANDITGESELLSCHAFT AUF AKTIEN (KGAA) CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). JUNE 30, 1983 Assignors: FAG KUGELFISCHER GEORG SCHAFER & CO.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/04—Devices for imparting false twist
    • D02G1/08—Rollers or other friction causing elements
    • D02G1/082—Rollers or other friction causing elements with the periphery of at least one disc

Definitions

  • This invention relates to textile apparatus and, more particularly, to apparatus for false-twisting thread.
  • the positioning and therefore the adjustment of the friction elements is an important factor in the operation of such a device.
  • the overlap and spacing of the friction elements will greatly affect the stress that is applied to the thread by the machine.
  • the overlapping arrangement of the friction elements makes it difficult to thread, i.e. operatively position new thread, in the apparatus. Further, because of the difficulty in properly threading the apparatus, high stresses can be imposed on the newly-installed thread during start up of the device which might break the thread.
  • the spindles can be moved to an open, non-overlapping position to allow easy threading of the apparatus.
  • the present invention sets forth apparatus for falsetwisting a thread by means of friction elements, which has three rotatably mounted spindles, each provided with at least one rotationally symmetrical friction element positioned at the corners of an equilateral triangle in plan view, so that the thread passes between the fric' tion elements in a zig-zag path. All the spindles are simultaneously adjustable with respect to the path of the thread and their triangular relationship in all positions of adjustment with the center of the triangle lying on the path of the thread.
  • spindles Common simultaneous adjustment of the spindles is achieved through a hollow, axially movable mandrel with a head of variable outside diameter which projects between the spindles which, in turn, are urged against the head.
  • the spindles can be moved from a threading to an operating position by an eccentric or cam means projecting between the spindles, against which each of which a respective spindle is resiliently urged.
  • means is provided to effect common adjustment of the spindles, comprising a ring enclosing the spindles and rotatable on them or engaging their housings.
  • the device can be locked for simultaneous adjustment of the spindles.
  • Another object of the present invention is to provide a false-twisting apparatus which facilitates threading of the thread or yarn between the friction elements.
  • Still another object of the present invention is to provide a false-twisting apparatus which can be simply and accurately threaded.
  • Another object of the present invention is to provide a false-twisting apparatus which reduces breakage of the thread during the threading operation and the start of the apparatus thereafter.
  • FIG. 1 is a partially sectioned side view of falsetwisting apparatus in accordance with the present invention.
  • FIGS. 2 and 3 are cross-sections along line IIII of FIG. 1, each showing a different form of the eccentric for the simultaneous adjustment of the spindles between the open and the closed positions.
  • the present invention comprises three drive units 1, each with a respective set 20 of friction discs.
  • Each complete drive unit 1 comprises a spindle 2 which is rotatably mounted in a housing 5 in rolling bearings.
  • a ring 11 with a conical annular surface 12 and a pivoting lever 13 are secured by means of a nut 14 which is screwed onto an external screw thread on the housing 5.
  • a pivot pin 15 parallel to the spindle 2 is secured on the pivoting lever 13 by means of a nut 16.
  • the spindle 2 projects at both ends from the housing 5 and on that portion which lies adjacent to the pivot pin 15, a whorl 17 is secured to drive the spindle 2.
  • Each drive unit 1 forms a self-contained structural unit on which a set 20 of friction discs can be mounted.
  • this comprises three friction discs 21, each comprising a-hub and an annular flange at one end of the hub.
  • the friction discs 21 are secured next to one another on a common locating sleeve 22.
  • Each set 20 of friction discs and at least one spacing ring 26 is fitted onto that portion of the spindle 2 of the associated drive unit 1 which is furthest from the whorl 17 and the set of friction discs is connected to the spindle to rotate therewith by means fo an annular disc 23 and a screw 24. That end of the set of friction discs opposite the annular disc 23 and the screw 24 abuts against an abutment ring 25 provided on the spindle 2.
  • the spindles 2 of the three drive units 1 extend parallel to each other and form in plan view the corners of an equilateral triangle.
  • the friction discs 21 of the set 20 interengage one another, that is to say the discs 21 of each set 20 overlap the discs 21 of the two other sets 20.
  • the mutually identical sets 20 of friction discs must, therefore, be arranged on the spindles 2 of the associated drive units 1 with different axial positions of the discs 21 in each case.
  • the different positioning is achieved by the spacing rings 26.
  • a spacing ring 26 is provided on the spindle 2 of the lefthand drive unit 1 above the set 20 of friction discs. and the same is true of the spindle 2 of the righthand drive unit 1, except that there the set 20 of friction discs is inverted.
  • the three drive units 1 are mounted to be movable on a supporting plate 30 by the pivot pins 15, each of which is inserted in a sliding bush or bushing 31 secured in the plate 30.
  • the three bushes 31 form the corners of an equilateral triangle with a mid-point which coincides with the mid-point of the equilateral triangle defined by the spindles 2 of the three drive units 1.
  • a device 32 is provided on the supporting plate 30 for the common mutual adjustment of the drive units 1 relative to the mid-point of the spindles 2 in a plane parallel to the supporting plate 30.
  • the three drive units 1 are resiliently urged towards one another, that is to say, toward the said common mid-point, by an elastic O-ring 33 which embraces externally the three rings 11 of the drive units 1.
  • the drive is provided by two elastic O-rings 34 and 35.
  • One O-ring 34 embraces all three whorls 17 of the three drive units 1.
  • the other O-ring 35 embraces only one whorl 17 and is driven by a motor (not shown). All three sets 20 of friction discs, therefore, run simultaneously and in the same direction of rotation.
  • other driving elements could be employed, for example, toothed belts,
  • the supporting plate 30 is provided with three openings 36 through each of which a drive unit 1 projects with its whorl 17.
  • the device 32 for the common mutual adjustment of the drive units 1 is arranged with its axis parallel to the spindles 2 and passing through the mid-point of the equilateral triangle which they define.
  • the device 32 comprises a hollow mandrel 37 with a conical head 38 on that end which is towards the drive units 1 and a turnbutton 39 on its other end, a guide tube 40 secured to the supporting plate 30 on that face of it which is furthest from the sets 20 of friction discs, and a lock nut 41.
  • the mandrel 37 is mounted to be rotatable and axially displaceable in the guide tube 40.
  • the turnbutton 39 it has a portion 37' of larger outside diameter provided with an external screw thread.
  • the lock nut 41 screws onto the portion 37' and the portion 37' is also screwed into the widened end portion 40- of the guide tube 40, the latter being provided with an appropriate internal screw thread.
  • the head 38 of the mandrel 37 has on it a conical annular surface 42 which diverges towards the end. This corresponds in its inclination to that of the conical annular surfaces 12 of the rings 11 on the drive units 1.
  • the elastic O-ring 33 By means of the elastic O-ring 33 the annular surfaces 12 and the annular surfaces 42 are urged into mutual contact.
  • the axial position of the mandrel 37 in the guide tube 40 thus determines the mutual radial separation of the sets 20 of friction discs in the closed position shown in FIG. 1, in which the friction discs 21 overlap.
  • the mandrel 37 is located in the respective axial position in the guide tube 40 by tightening the lock nut 41 against the adjacent end of the guide tube 40. It also holds the three drive units I pressed against the supporting plate 30 by means of the head 38 so that the pivot pins 15 cannot jump out of their guide bushes 31.
  • the lock nut 41 When the mutual position of the three sets 20 of friction discs in a radial direction is to be altered then first the lock nut 41 must be slackened, that is to say, it must be screwed back on the portion 37' of the mandrel 37 away from the guide tube 40. Then the mandrel 37 can be moved axially in the guide tube 40 by means of the turn-button 39. In the one direction of rotation of the button 39, the mandrel 37 is screwed into the guide tube 40, leading to a simultaneous movement of all three sets 20 of friction discs towards one another. In the other direction of rotation, the mandrel 37 is screwed out of the guide tube 40, causing the sets 20 of friction discs to move mutually apart. When the sets 20 of friction discs have reached the desired relative radial position, the lock nut 41 is tightened again.
  • An anti-ballooning eye 43 is mounted on the free end of the turn-button 39 and a sleeve-like thread guide 44 is mounted on the free end of the head 38. Therefore, the anit-ballooning eye 43 and the thread guide 44 lie coaxial or concentric with the common mid-point of those two equilateral triangles, the corners of which are formed by the spindles 2 or by the pivot pins 15 of the drive units 1.
  • the device serves to false-twist a thread F.
  • This can enter from supply means (not shown) to pass through the anti-ballooning eye 43 into the device, through the hollow mandrel 37 and emerge through the thread guide 44 and run between the three sets 20 of friction discs, to leave the device through a thread guide (not shown) above the sets 20 of friction discs to pass to a take-up device (also not shown).
  • the thread F could run through the device of FIG. 3 in the opposite direction.
  • the thread F follows a zig-zag path with changes of direction at its points of engagement with the nine discs 21.
  • the embracing relationships of the thread F against the friction discs 21 are ideal as the discs 21 always form an equilateral triangle and thereby locate the thread F very accurately.
  • the mutual adjustment of the sets 20 of friction discs by use of the device 32 generally takes place with the apparatus running, that is to say with the thread F passing through and the sets 20 of rotting friction discs.
  • the O-ring 34 must be elastic enough to ensure that there is reliable driving of the whorls 17 man the mutual positions of the sets 20 of friction discs, that is to say, of the sets 20 of friction discs driven via the spindles 2.
  • the adjustment process could also be performed by moving the spindle housings 5 simultaneously with respect to the Conical surface.
  • an external ring could be provided to simultaneously engage the external threads of all three spindle housings, to move the housings axially in unison. relative to conical surface 42, thereby adjusting their relative position.
  • a hollow mandrel 101 is rotatably mounted on the guide tube 40 between the supporting plate and a spring ring 100 inserted in the guide tube 40, this mandrel having an actuating lever 102 and a disc-shaped eccentric 103 which cooperates with the lower end 104 of the spindle housing 5 so that angular movement of the hollow mandrel 101 by means of the lever 102 causes the sets 20 of friction discs to move apart simultaneously from the closed position shown in FIG. 1 to the open position in which the discs 21 no longer overlap but leave free a central axial threading passage so that the thread F can be inserted.
  • the lever 102 is turned back to the position shown in FIG.
  • the eccentric 103 has three cam portions 105 against each of which the end 104 of the associated housing 5 of respective one of the spindles 2 is urged.
  • each cam portion 105 of the eccentric 103 is made symmetrical with respect to a radial central line 106. At the radially outermost point, each cam 105 has a recess 107 too receive the end 104 of the housing 5 of a spindle 2 in the open position. Between each adjacent pair of cams 105 there is a recess 108 to receive the end 104 of the housing 5 of a spindle 2 in the closed position.
  • the eccentric 103 of FIG. 2 can be pivoted on the guide tube 40 in each direction, that is to say, both clockwise and also counter-clockwise from the closed position shown in full lines in FIG. 2.
  • the eccentric 103 is located or held both in the closed position and also in the open position as the ends 104 of the housing lie resiliently in the re Clears 108 or 107.
  • each cam portion 105 of the eccentric 103 is made asymmetrical.
  • the stop surfaces 109 and 110 of two adjacent cam portions 105 are formed by the two side faces of an eccentric projection 111.
  • Each cam portion 105 is given a substantially arcuate convex curvature over its central region, the are being eccentric with respect to the axis of rotation of the eccentric.
  • the eccentric 103 can be capable of snapping into the open position at least. for example, by means of a snapping device (not shown) which resiliently engages in the hollow mandrel 101.
  • a snapping device not shown
  • the eccentric l03 in FIG. 3 is only capable of pivoting in a direction from the closing position to the open position and back again.
  • the eccentric 103 can be mounted detachably on the hollow mandrel 101 as shown in FIG. 3.
  • the eccentric 103 has three radial grooves 112 in its central internal bore, in which corresponding ribs 113 on the mandrel 101 engage.
  • Apparatus for false-twisting threads by means of friction elements comprising:
  • said means for guiding thread comprise a tubular section disposed on said path of travel of said thread and adapted for the passage of thread therethrough;
  • cam means are disposed on said tubular section
  • said actuating means to position said cam means comprise means to rotate said cam means.
  • cam means comprise a plurality of cam surfaces adapted to simultaneously position said three spindles.
  • each of said cam surfaces has at its radially outermost point a recess to operatively coact with said spindles to provide an open position
  • a recess is positioned between each of said adjacent cam surfaces to operatively coact with said spindle to produce a closed position.
  • cam means comprise radially outwardly directed stop means to coact with said spindle means.
  • variable surface associated with said means for guiding thread
  • the apparatus for false-twisting threads according to claim 9 further comprising thread means to concentrically dispose said variable surface with said means to guide thread and to allow movement therebetween.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US460459A 1973-04-16 1974-04-12 False twisting apparatus Expired - Lifetime US3885378A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2319153A DE2319153C3 (de) 1973-04-16 1973-04-16 Vorrichtung zum Falschdrallen von Fäden

Publications (1)

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US3885378A true US3885378A (en) 1975-05-27

Family

ID=5878250

Family Applications (1)

Application Number Title Priority Date Filing Date
US460459A Expired - Lifetime US3885378A (en) 1973-04-16 1974-04-12 False twisting apparatus

Country Status (7)

Country Link
US (1) US3885378A (enrdf_load_stackoverflow)
JP (1) JPS5440668B2 (enrdf_load_stackoverflow)
CH (1) CH571590A5 (enrdf_load_stackoverflow)
DE (1) DE2319153C3 (enrdf_load_stackoverflow)
FR (1) FR2225554B2 (enrdf_load_stackoverflow)
GB (1) GB1421312A (enrdf_load_stackoverflow)
IT (1) IT1047030B (enrdf_load_stackoverflow)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3964248A (en) * 1974-06-12 1976-06-22 Kugelfischer Georg Schafer & Co. False twisting devices
US3973384A (en) * 1974-12-30 1976-08-10 Monsanto Company Friction aggregate
US3973383A (en) * 1974-12-26 1976-08-10 Monsanto Company Friction falsetwist device
US4012896A (en) * 1974-02-25 1977-03-22 Fiber Industries, Inc. Yarn false twister
US4068460A (en) * 1975-11-17 1978-01-17 Fiber Industries, Inc. Yarn process
US4104856A (en) * 1977-05-18 1978-08-08 Akzona Incorporated Center spacing gauge for friction twisting units
US4124974A (en) * 1977-04-26 1978-11-14 Akzona Incorporated Yarn twist arrangement
US4240248A (en) * 1978-09-27 1980-12-23 Heberlein Maschinenfabrik Ag Devices for texturing yarns by imparting false twist by friction
US4704858A (en) * 1985-10-10 1987-11-10 Rieter Scragg Limited False twisting apparatus
US4721650A (en) * 1985-01-11 1988-01-26 Monsanto Company Partially oriented nylon yarn and process
US5692369A (en) * 1994-10-18 1997-12-02 Firma Carl Freudenberg Rotor disk for a spinning machine
CN105765120A (zh) * 2013-10-18 2016-07-13 苏拉部件有限公司 具有能够移动的摩擦锭子的双摩擦单元

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH593359A5 (enrdf_load_stackoverflow) * 1975-11-24 1977-11-30 Heberlein & Co Ag
JPS5356049U (enrdf_load_stackoverflow) * 1976-10-08 1978-05-13
DE19520120A1 (de) * 1995-06-01 1996-12-05 Schaeffler Waelzlager Kg Antrieb für Friktionsspindelaggregate

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2923121A (en) * 1957-06-21 1960-02-02 Hobourn Aero Components Ltd Apparatus for imparting twists to yarns
US2939269A (en) * 1957-06-11 1960-06-07 Scragg & Sons Apparatus for twisting and/or crimping yarn
US3287890A (en) * 1964-10-07 1966-11-29 Monsanto Co Apparatus for twisting yarn
US3762149A (en) * 1971-05-14 1973-10-02 Heberlein & Co Ag False-twist device
US3811258A (en) * 1970-10-01 1974-05-21 Socitex Twisting devices for filaments, especially for textile filaments

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2939269A (en) * 1957-06-11 1960-06-07 Scragg & Sons Apparatus for twisting and/or crimping yarn
US2923121A (en) * 1957-06-21 1960-02-02 Hobourn Aero Components Ltd Apparatus for imparting twists to yarns
US3287890A (en) * 1964-10-07 1966-11-29 Monsanto Co Apparatus for twisting yarn
US3811258A (en) * 1970-10-01 1974-05-21 Socitex Twisting devices for filaments, especially for textile filaments
US3762149A (en) * 1971-05-14 1973-10-02 Heberlein & Co Ag False-twist device

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4012896A (en) * 1974-02-25 1977-03-22 Fiber Industries, Inc. Yarn false twister
US3964248A (en) * 1974-06-12 1976-06-22 Kugelfischer Georg Schafer & Co. False twisting devices
US3973383A (en) * 1974-12-26 1976-08-10 Monsanto Company Friction falsetwist device
US3973384A (en) * 1974-12-30 1976-08-10 Monsanto Company Friction aggregate
US4068460A (en) * 1975-11-17 1978-01-17 Fiber Industries, Inc. Yarn process
US4124974A (en) * 1977-04-26 1978-11-14 Akzona Incorporated Yarn twist arrangement
US4104856A (en) * 1977-05-18 1978-08-08 Akzona Incorporated Center spacing gauge for friction twisting units
US4240248A (en) * 1978-09-27 1980-12-23 Heberlein Maschinenfabrik Ag Devices for texturing yarns by imparting false twist by friction
US4721650A (en) * 1985-01-11 1988-01-26 Monsanto Company Partially oriented nylon yarn and process
US4704858A (en) * 1985-10-10 1987-11-10 Rieter Scragg Limited False twisting apparatus
US5692369A (en) * 1994-10-18 1997-12-02 Firma Carl Freudenberg Rotor disk for a spinning machine
CN105765120A (zh) * 2013-10-18 2016-07-13 苏拉部件有限公司 具有能够移动的摩擦锭子的双摩擦单元
CN105765120B (zh) * 2013-10-18 2018-01-12 苏拉部件有限公司 具有能够移动的摩擦锭子的双摩擦单元

Also Published As

Publication number Publication date
DE2319153C3 (de) 1980-11-13
FR2225554A2 (enrdf_load_stackoverflow) 1974-11-08
IT1047030B (it) 1980-09-10
JPS5440668B2 (enrdf_load_stackoverflow) 1979-12-04
GB1421312A (en) 1976-01-14
DE2319153B2 (de) 1980-03-13
FR2225554B2 (enrdf_load_stackoverflow) 1977-10-14
CH571590A5 (enrdf_load_stackoverflow) 1976-01-15
DE2319153A1 (de) 1974-10-31
JPS506851A (enrdf_load_stackoverflow) 1975-01-24

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AS Assignment

Owner name: FAG KUGELFISCHER GEORG SCHAFER KOMMANDITGESELLSCHA

Free format text: CHANGE OF NAME;ASSIGNOR:FAG KUGELFISCHER GEORG SCHAFER & CO.;REEL/FRAME:004182/0129

Effective date: 19830826