EP0212436A2 - Appareil pour donner une torsion ou une fausse torsion à un fil multifilament - Google Patents

Appareil pour donner une torsion ou une fausse torsion à un fil multifilament Download PDF

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Publication number
EP0212436A2
EP0212436A2 EP86110839A EP86110839A EP0212436A2 EP 0212436 A2 EP0212436 A2 EP 0212436A2 EP 86110839 A EP86110839 A EP 86110839A EP 86110839 A EP86110839 A EP 86110839A EP 0212436 A2 EP0212436 A2 EP 0212436A2
Authority
EP
European Patent Office
Prior art keywords
belt
rollers
roller
crossing
axis
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.)
Withdrawn
Application number
EP86110839A
Other languages
German (de)
English (en)
Other versions
EP0212436A3 (fr
Inventor
Heinz Dr.-Ing. E.H. Schippers
Peter Dammann
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.)
Oerlikon Barmag AG
Original Assignee
Barmag Barmer Maschinenfabrik AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Barmag Barmer Maschinenfabrik AG filed Critical Barmag Barmer Maschinenfabrik AG
Publication of EP0212436A2 publication Critical patent/EP0212436A2/fr
Publication of EP0212436A3 publication Critical patent/EP0212436A3/fr
Withdrawn legal-status Critical Current

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    • 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
    • D02G1/085—Rollers or other friction causing elements between crossed belts

Definitions

  • the invention relates to a device for twisting or false twisting multifilament threads, with an endless, over at least two rollers, of which at least one serves as a drive roller, and crossing at one point flat belts with a substantially rectangular cross section as a twist generator, the thread on the crossing point between the crossing and thereby twisting the belt sections is passed.
  • the thread is passed between two crossing belts or belt sections which move in opposite directions in the crossing area. In doing so, it receives a twine, at the same time being given a conveying component which depends on the size of the crossing angle of the belts or belt sections.
  • the object of the invention is then to provide a device which offers the possibility of changing the crossing angle in a wide range without exchanging individual rollers and / or the endless belt and - in further development - also the other disadvantages of the prior art Eliminate technology or at least significantly mitigate it.
  • This object is achieved by a device of the type described at the outset, which is characterized in that the endless belt is guided over at least three rollers and the position of at least one roller relative to one of the other rollers can be changed by the rollers.
  • the endless belt is guided in two elongated loops over at least three rollers, the loops being guided around a substantially common center on one side and spreading W-shaped relative to one another on the other side by deflections arranged at a distance from one another are.
  • the belt is guided twice over the middle roller. This can either be done by the belt loop forming the belt crossing resting on the roll, the second loop resting on the first loop. Such a solution is particularly possible when using a thin belt.
  • the two belt loops can also run side by side on the extended middle roller in the axial direction.
  • a further deflection roller can be provided for the second belt loop, seen from the intersection behind the middle roller and in the longitudinal axis of the device.
  • the deflecting rollers which guide the belt in a W-shaped spread are mounted on the fly and on opposite sides, their respective mounting being on the side on which the belt section which wraps the respective roller runs.
  • the bearings of the deflection rollers are advantageously rotatable or pivotable through 180 °.
  • the belt can also run over five rollers, four of which are arranged in the corners of a square around the central roller and are preferably individually or jointly adjustable in their position relative to one another. Another pulley can serve as a tension pulley.
  • the two deflecting rollers which together with the central roller, enclose the intersection area, can be pivoted about an axis which runs perpendicular to the axis of the respective deflecting roller and to an imaginary connection between the respective deflecting roller axis and the axis of the central roller; preferably it goes through the twine point or lies half a belt width in front of it from the roll. Thread guides in front of and behind the thread point stabilize the thread path and, if necessary, guide the thread around existing obstacles.
  • a device of the type described in the introduction has smoothing devices in the area of the intersection, which flatten the belt sections in this area in two parallel planes. They can be designed to be stationary and immovable, as bars on both sides of the crossing point or as a plate which extends over the crossing point along the belt run.
  • pressure devices are also provided, or only, which press the flat sides of the two belt sections facing one another with preferably adjustable force in the area of the intended twisting point.
  • the smoothing devices can advantageously be arranged in front of and behind the crossing area and the pressing devices themselves in the crossing area forming the thread passage and preferably limited to the area of the twisting point.
  • Known means such as the low-friction coating and / or the production of a thin film of liquid or air can be used to reduce the friction between the named devices and the belt.
  • the pressure devices are not rigid, rather the interacting parts are resiliently movable against each other; it is sufficient if one part is resilient and the other is fixed.
  • both belt sides can be separated so that one side is in contact with the thread and the other is in contact with the rollers.
  • a belt is used for this, which has the shape of a doubled Möbius band. This occurs when a Möbius ribbon is cut along its center line.
  • the Möbius volume see "Meyers supraes Faschenlexikon", ed. 1983, volume 14, pp. 317/318 and "THE ENCYCLOPEDIA AMERICANA", Copright 1972, vol. 26, p.
  • the Mobius Strip was created if the opposite narrow sides of an elongated rectangle, for example a band, are connected to one another in such a way that the previously diagonally opposite corners coincide; it has only one surface, which is endless in its longitudinal direction.
  • the doubled Möbius tape can also be made by connecting these ends before joining the two ends of an open tape section be rotated against each other by 720 °; for the production of a Möbius shear. A twist of the ends of the open band by 180 ° is sufficient.
  • Fig. 1 shows an embodiment of the device according to the invention with a middle roller 3 and two deflection rollers 22, 23.
  • the endless belt 2 is guided twice around the middle roller 3; this is explained in the rear part of the drawing description.
  • the deflection roller 22 can be changed in its position in relation to the deflection roller 23 in FIG. 1 by moving it along the arrow 37. This can be done, for example, by fixing the roller axis at any point in a correspondingly shaped slot indicated by the arrow 37. In the same way, the roller 33 is displaceable in FIG. 8. In order to keep the belt length the same, the slot runs on a circular arc, the axis of the central roller 3 as the center has point.
  • a smoothing device 6 and a pressing device 7 are indicated by dash-dotted lines in the intersection area 5 of the two intersecting belt sections 26, 27. These ensure that on the one hand the two belt sections 26, 27 run parallel to one another in the intersection area 5 and, on the other hand, there is a force fit between the belt surfaces and the thread 1 which is necessary for transmitting the false twist.
  • FIG. 2 An embodiment of the invention is shown in FIG. 2, in which the belt 2 is guided in a W-shaped spread over four deflection rollers 22, 23, 40, 41.
  • the four deflection rollers are arranged as corner points of a square around the central roller 3 and are seated on a frame-shaped slide 39. Only the central roller 3 is supported on the base plate 43.
  • the frame-shaped slide 39 can be displaced along the longitudinal axis 38 of the device with respect to the base plate 43, as a result of which the crossing angle 35 in a rel. wide range can be changed.
  • the thread guides 30 passing the thread 1 above or below the outer belt spaces are fastened on the base plate 43 in the embodiment shown and have a corresponding length extension with regard to the crossing region 5 which changes when the crossing angle 35 changes.
  • the thread guides 30 can also be fastened on the carriage 39.
  • the pressure roller 42 which is also provided and loaded by the spring 52 and can be moved elastically in the direction of the arrow 44, can compensate for belt displacement changes occurring when the deflection rollers 22, 23, 40, 41 are displaced.
  • FIG 3 shows a view from the side into the intersection area 5, the smoothing device in the form of the plate 17 and the pressing device 7, which consists of the pistons 12 and 19 acting against one another, being partially cut.
  • the plate 17 representing the smoothing device 6 extends over the entire intersection area 5. It has a bore 18 concentric with the twist point 36, through which the piston 12 extends and rests on the belt section 26.
  • the diameter of the bore 18 is such that contact between its edge and the piston 12 is avoided with certainty.
  • the piston 12 runs in a guide 11, which is shown in the drawing as a cylinder and is movable perpendicular to the belt surface.
  • a guide 11 which is shown in the drawing as a cylinder and is movable perpendicular to the belt surface.
  • the piston 12 is pressed by a compression spring 13 against the crossed belt sections 26, 27 and supported by the counter-piston 19.
  • a compression spring 13 for example, a cylinder-piston unit, in particular a pneumatic cylinder-piston unit, can also be used as the loading element.
  • the piston 12 is then pressurized with compressed air instead of by the compression spring 13, for which purpose a connection 14 can be provided on the cylinder 11.
  • a central channel 15 is provided in the piston 12, which ends in an relief 16 on the piston end seated on the belt 26.
  • the spring-loaded piston 12 serves to build up a fluid sliding layer, preferably an air sliding film generated by compressed air introduced via connection 14, between the piston 12 and the belt surface. Even if this is not shown, it is understood that the piston 19 can be equipped accordingly.
  • the connection 14 also serves for the air supply; In channel 15, however, a throttle is then provided, which is dimensioned such that the structure of the air sliding film does not endanger the function of the cylinder-piston unit.
  • Smoothing device 6 and pressing device 7 can also be separated spatially further than shown in FIG. 3, so that only the two pistons 12, 19 are located in the immediate area of the twisting point 36.
  • the smoothing devices are then provided in front of and behind the crossing point 5 in the belt run. It may be necessary or expedient to provide a smoothing device 6 in front of and behind the immediate intersection area 5 for each belt section 26, 27. This can be done, for example, transversely to the running direction of the associated belt section 26 or 27 ; aligned in parallel planes to each other and to the desired course of the belt inner surfaces in the crossing area be cylindrical pins.
  • Figures 4 to 6 show the same arrangement of the rollers and the same belt guide, but are equipped with different types of belts.
  • the belt 2 or 21 or 24 is guided in two elongated loops. One of them runs from reel 4 via reel 22 to reel 3, the other from reel 3 via reel 23 to reel 4.
  • both loops 22-3-23 and 23-4-22 are about the same Center 3 out, while the first-mentioned loop sections are spread out in a W-shape.
  • the belt 2 of FIG. 4 runs from the deflection roller 22 over the roller - to the deflection roller 23 without rotation and is in front of the support on the roller 3, here counterclockwise. twisted only 180, so that the previous descriptive
  • the device of FIG. 5 is equipped with a belt in the form of a doubled Möbius band 21 (see above). 4, the belt 21 has only one surface with the main roller 3 forming the drive roller, the other surface with the thread 1 and the idler rollers 22, 4 and 23 so that here the separation between the drive side and the side attacking the thread prevents the properties of the drive side from being influenced by thread abrasion, preparation deposits and the like.
  • the belt 24 has the shape of a. real Möbius band. Although no difference can be seen here in the intersection area compared to FIG. 5, it is also necessary for the required guidance in the intersection area 5 to place an additional twist 25 between two deflection rollers 22 and 4 or (as shown) the rollers 4 and 23; but since by definition the Möbius belt has only one surface, this results in a completely uniform stress on this belt surface.
  • the special property of the Möbius belt 24 also gives the possibility of keeping the belt surface clean by arranging only one cleaning device if necessary.
  • the embodiments of the figures - to 6 are three um Steering castors 4, 22 and 23 shown.
  • the deflection roller 4 can be omitted and the belt 2, 21 or 24 can be guided twice over the main roller 3. This leads to a considerable shortening of the arrangement. It depends on the thickness and the material of the belt used ab 'whether the 3 differences caused in the drive speed leads or by the different spacing of the two superposed belt portions of the axis of the lead to a significant impairment of function can be neglected. This difficulty can be circumvented by guiding the two belt spaces side by side using a correspondingly extended roller 3.
  • the deflection roller 4 is replaced by two deflection rollers similar to rollers 40 and 41 in Fig. 9, which are arranged so that they form the corners of a square with the rollers 22, 23.
  • the thread insertion can be considerably simplified by the bearings 22 and 23 being mounted on the fly.
  • the respective roller bearing is provided on the side of the thread passage 5 on which the belt section 26 or 27 also runs, which wraps around the respective roller 22 or 27.
  • the bearing of the roller 22 is then concealed behind it, that of the roller 23 as indicated in front of it.
  • Stabilizing thread guides 30 are provided.
  • the Bearing of the guide rollers 22 and 23 can be rotated through 180 ° in order to achieve easier thread insertion.
  • the crossing area 5 can be opened for threading; but also the mutual wrapping of the belt sections 26, 27 can be increased, so that the arrangement of smoothing and / or pressing devices 6, 7 can be omitted entirely or on one side.
  • the required belt length or the length of the belt path should not change as far as possible; a resilient belt tensioner may, however, Compensate for small changes in the length of the belt path.
  • a change in the crossing angle 35 can also be achieved by measures similar to those described above.
  • each individual role is replaced by a pair of roles 31, 32 and 33, 34, respectively.
  • all rollers 31 to 34 are in a rel. wide range against each other so that the change of the crossing angle 35 is possible while maintaining the belt tension in a fairly large range.
  • the belt 2 should be turned to the left in this area; then there is a right turn between the rollers 34 and 33, a left turn again between the rollers 33 and 32 and finally a right turn between the rollers 32 and 31.
  • the belt can be rotated between the rollers in such a way that the two belt sections 26 and 27 forming the intersection area and one of the two sections 25 have the same twist and only the other section 25 has an opposite twist. In all three cases, both sides of the belt are used, although each time in a slightly different way.
  • the roll 4 serves as the drive roll and the roll 3 can be pivoted through 360 ° about an axis that is perpendicular to its axis lies and extends substantially in the perpendicular to the connection between the centers of the two rollers 22 and 23, as seen in the drawing; for example, the pivot axis can coincide with the longitudinal axis 38 of the device. ;
  • the central roller 3 and the two deflection rollers 22 and 23 forming the intersection area 5 are mounted on a base plate 43.
  • the roller 3, which is preferably also a drive roller, is arranged in a stationary manner, while the position of the deflection rollers 22, 23 can be changed in accordance with the arrows 37; this change is preferably carried out symmetrically for both rollers 22, 23 with the longitudinal axis 38 of the device.
  • the two deflection rollers 40 and 41 lying on the other side of the central roller are mounted on a slide 39 and can be displaced relative to the base plate 43 as indicated by arrow 45; Possible changes in belt travel when changing the crossing angle 35 can thus be compensated for by shifting the deflecting rollers 22 and 23 by moving the slide 39.
  • a tensioning roller 42 which here lies on the outside of the belt section 48 between the rollers 40 and 41. In its simplest form, it can be fixed in its position, which ensures the desired belt tension; it is preferably elastically movable in the direction of arrow 44 against a spring 52 or a pneumatic cylinder-piston unit.
  • the instep role 42 can also acc. FIGS. 4 to 6, in which the deflection roller 4 is replaced by two deflection rollers 40, 41 according to FIG. 9, can be used successfully.
  • the two deflection rollers 22, 23 can either be mounted together or each separately on a slide that can be displaced, for example, approximately parallel to the longitudinal axis 38.
  • the slides can also be designed such that the displacement takes place symmetrically to the longitudinal axis 38 and at an acute angle to the latter.

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  • 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)
EP86110839A 1985-08-07 1986-08-05 Appareil pour donner une torsion ou une fausse torsion à un fil multifilament Withdrawn EP0212436A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3528244 1985-08-07
DE3528244 1985-08-07
DE3543526 1985-12-10
DE3543526 1985-12-10

Publications (2)

Publication Number Publication Date
EP0212436A2 true EP0212436A2 (fr) 1987-03-04
EP0212436A3 EP0212436A3 (fr) 1990-02-07

Family

ID=25834794

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86110839A Withdrawn EP0212436A3 (fr) 1985-08-07 1986-08-05 Appareil pour donner une torsion ou une fausse torsion à un fil multifilament

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US (1) US4698959A (fr)
EP (1) EP0212436A3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2619831B1 (fr) * 1987-08-28 1989-11-24 Devtex Dispositif permettant de communiquer une fausse torsion par friction a au moins un fil en mouvement
DE4110464A1 (de) * 1991-03-30 1992-10-01 Kugelfischer G Schaefer & Co Friktionsfalschdrallaggregat mit elektromotorischem antrieb
US20100024376A1 (en) * 2008-08-04 2010-02-04 The Hong Kong Polytechnic University Method and apparatus for manufacturing slalom false twisting on ring yarn
US8544252B2 (en) * 2008-08-04 2013-10-01 The Hong Kong Polytechnic University Method and apparatus for reducing residual torque and neps in singles ring yarns
DE102011111725A1 (de) * 2011-08-26 2013-02-28 Oerlikon Textile Gmbh & Co. Kg Textilmaschine mit einer Vielzahl von Arbeitsstellen
US8549830B1 (en) * 2012-03-27 2013-10-08 Hong Kong Polytechnic University Method and apparatus for imparting false twist to yarn before ring spinning
CN106894124B (zh) * 2017-03-28 2019-03-01 江南大学 一种两次增强捻纺纱装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4377932A (en) * 1979-07-14 1983-03-29 Barmag Barmer Maschinenfabrik Ag Flexible belt yarn false twisting apparatus
DE3428518A1 (de) * 1983-08-06 1985-02-21 Rieter-Scragg Ltd., Macclesfield, Cheshire Vorrichtung zum zwirnen eines faserbandes oder garnes

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2908133A (en) * 1956-08-09 1959-10-13 Clemson Agricultural College O False twister
US3045416A (en) * 1958-09-15 1962-07-24 Ubbelohde Leo False twisting device
US3103097A (en) * 1959-11-28 1963-09-10 Heberlein Patent Corp Yarn twisting apparatus
GB986245A (en) * 1963-03-22 1965-03-17 British Nylon Spinners Ltd Improvements in or relating to the production of yarns with varying twist
CH424074A (de) * 1965-05-06 1966-11-15 Heberlein & Co Ag Friktionsdrallgeber für eine Falschzwirnvorrichtung
US4047373A (en) * 1975-06-24 1977-09-13 Oda Gosen Kogyo Kabushiki Kaisha False-twisting method and apparatus for producing crimped filament yarns
US4144700A (en) * 1976-12-14 1979-03-20 Murata Kikai Kabushiki Kaisha False twisting apparatus
JPS5922125Y2 (ja) * 1976-12-14 1984-07-02 村田機械株式会社 仮撚装置におけるベルトのニツプ圧設定装置
FR2457333A1 (fr) * 1979-05-22 1980-12-19 Asa Sa Dispositif permettant de communiquer une fausse torsion par friction a au moins un fil en mouvement

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4377932A (en) * 1979-07-14 1983-03-29 Barmag Barmer Maschinenfabrik Ag Flexible belt yarn false twisting apparatus
DE3428518A1 (de) * 1983-08-06 1985-02-21 Rieter-Scragg Ltd., Macclesfield, Cheshire Vorrichtung zum zwirnen eines faserbandes oder garnes

Also Published As

Publication number Publication date
EP0212436A3 (fr) 1990-02-07
US4698959A (en) 1987-10-13

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