EP1664406B1 - Falschdrallvorrichtung - Google Patents

Falschdrallvorrichtung Download PDF

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Publication number
EP1664406B1
EP1664406B1 EP04765343A EP04765343A EP1664406B1 EP 1664406 B1 EP1664406 B1 EP 1664406B1 EP 04765343 A EP04765343 A EP 04765343A EP 04765343 A EP04765343 A EP 04765343A EP 1664406 B1 EP1664406 B1 EP 1664406B1
Authority
EP
European Patent Office
Prior art keywords
disk
friction
thread
friction disks
shafts
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.)
Not-in-force
Application number
EP04765343A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1664406A1 (de
Inventor
Frank Blaurock
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 Textile GmbH and Co KG
Original Assignee
Oerlikon Textile GmbH and Co KG
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 Oerlikon Textile GmbH and Co KG filed Critical Oerlikon Textile GmbH and Co KG
Publication of EP1664406A1 publication Critical patent/EP1664406A1/de
Application granted granted Critical
Publication of EP1664406B1 publication Critical patent/EP1664406B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • D02G1/06—Spindles

Definitions

  • the invention relates to a false twist device for false twisting a synthetic thread according to the preamble of claim 1.
  • the friction discs are arranged on three shafts, which are rotatably supported on a bearing block.
  • the shafts are arranged at a distance from each other to a triangle in such a way that the friction discs in the center of the triangle overlap.
  • the shafts are driven by a drive such that the friction discs rotate at a substantially constant peripheral speed.
  • the thread is guided in the center on the peripheral surfaces of the friction discs, so that forms a convoluted threadline.
  • the thread is guided in an oblique barrel over the peripheral surfaces of the friction discs.
  • the friction mechanisms acting between the thread and the circumferential surface of the friction discs cause a pulling force to convey the thread and a transverse force to twist the thread to be produced on the thread.
  • the ratio between the tensile force to convey the thread and the lateral force to twist the thread depends essentially on the geometry of the disc and the degree of overlap of the discs. In general, it is true that with increasing conveying effect can be textured thread-saving. A larger promotional effect can be However, often only at the expense of a reduced twisting reach. Therefore, there is a desire that the conveying action and twisting action generated by the false twisting unit are in a favorable relationship with each other.
  • Another object of the invention is to provide a disc geometry of the friction discs for a generic false twist device, with which regardless of the thread type, an optimum between the promotion of the thread and the twisting of the thread is achieved.
  • the invention proceeds to a new approach, which is based on the fact that the friction discs have the largest possible disc diameter. Considered by itself, with enlargement of the disk diameter of the friction disks, a reduction in the peripheral speed of the friction disks and thus a reduction in the twisting action would be achieved. On the other hand, however, the thread overflow on the circumferential surface of the friction disk is changed to such an extent as the disk diameter increases to increase the proportion of the conveying action. Surprisingly, it was found that despite increased disc diameter while maintaining a certain disc width and maintaining a minimum overlap of the functional discs, the loss of twisting is compensated, so that despite high production speeds sets a thread-preserving maximum twist setting on the thread.
  • the overlap of the friction discs is determined by a ratio formed between the disc diameter and the axial distance of the shafts, which is above the value of 1.45.
  • the friction discs have a disc width in the range of 9.5 mm to 11.5 mm
  • the ratio formed from the disc diameter and the center distance is limited at the top by the fixed axis distance of the shafts.
  • friction discs with a disc width in the range of below 9.5 mm led to an undesired twist decrease.
  • friction discs having a disc width of more than 11.5 mm more than sufficient swirl can be generated, but with the disadvantage of a too low conveying effect.
  • the friction disks according to the invention wherein the friction disks have a geometry with a wheel diameter in the range from 54 mm to 62 mm, a wheel width in the range from 9.5 mm to 11.5 mm and a profile radius on the peripheral surface of the friction disk forming a ratio in the range of 1.6 to 2.0 with the disk width.
  • the friction disks with disc diameters of the same size in which the disc diameter was in the range of 54 mm to 56.5 mm, proved particularly suitable.
  • the preferred range of friction discs in the diameter of 56 mm to 62 mm was the preferred range of friction discs in the diameter of 56 mm to 62 mm.
  • the profile radius is preferably formed symmetrically on the peripheral surface of the friction discs, so that the inlet and the outlet of the thread is kept equal to the peripheral surface of the friction discs.
  • the friction discs may in this case be formed from a ceramic, an elastomer or a plastic. Regardless of the choice of material result in particular for all soft materials advantageous extension of the operating time.
  • Fig. 1 shows the false twist device in a perspective view
  • Fig. 2 the false twist device is shown in a plan view.
  • the following description applies to both figures, insofar as no explicit reference is made to one of the figures.
  • the false twist device has a bearing block 1. On the bearing block 1 several waves 2.1, 2.2 and 2.3 are supported rotatably projecting. The shafts 2.1, 2.2 and 2.3 are coupled with their bearing end with a drive, not shown here. Such a drive is for example from the EP 0 744 480 A1 known. In that regard, reference is expressly made to the contents of the cited reference at this point.
  • the waves 2.1, 2.2 and 2.3 are arranged in a triangle.
  • a plurality of friction discs 4.1 to 4.7 are arranged offset from one another.
  • the shaft 2.1 in the thread running direction at a distance from each other an inlet disc 3 and two friction discs 4.3 and 4.6.
  • the second shaft 2.2 has a first friction disk 4.1 disposed immediately below the intake disk 3 and the further friction disks 4.4 and 4.7 at a distance.
  • the third shaft 2.3 has, in the direction of yarn travel, a first friction disk 4.2, which is arranged between the friction disks 4.1 and 4.3.
  • a further friction disk 4.5 At a distance from the friction disk 4.2 is followed by a further friction disk 4.5, which is arranged between the friction disks 4.4 and 4.6.
  • At the end of the shaft 2.3 carries an outlet disc. 5
  • the shafts 2.1, 2.2 and 2.3 are each arranged with a same center distance A to each other to the triangle.
  • the friction disks (not shown in FIG. 2, the intake disk 3) have such a large disk diameter D that the friction disks 4.1 to 4.7 overlap in the center of the triangle formed by the shafts 2.1 to 2.3.
  • the overlap of the friction disks 4.1 to 4.7 is defined here by the ratio between disk diameter D to center distance A as follows: D / A > 1 . 45
  • the discs 3, 4.1 to 4.7 and 5 are rotatably connected to the shafts 2.1, 2.2 and 2.3, so that drive the shafts 2.1, 2.2 and 2.3, the inlet disc 3, the friction discs 4.1 to 4.7 and the outlet disc 5 rotate in the same direction.
  • an inlet yarn guide 7 and on the outlet side a discharge yarn guide 8 is provided to a yarn 7 in the overlapping region substantially in the region of the center of the equilateral Triangle to lead.
  • the thread 6 is guided in a helical helical thread run along the peripheral surfaces of the inlet disk 3, the friction disks 4.1 to 4.7 and the outlet disk 5.
  • a false twist builds up on the thread 6, which replicates itself against the thread running direction in the thread 6.
  • On the outlet side of the false twist is resolved and the thread leaves ungrodded via the outlet yarn guide 8 the unit.
  • the inlet disc 3 has a polished peripheral surface, so that the thread can slide over the peripheral surface without significant effect. In relation to the friction disks 4.1 to 4.7, the inlet disk 3 may have a small disk diameter. Thus, the inlet pulley 3 assumes only a thread guide.
  • the disk stack of the overlapping disks is limited on the outlet side by the outlet disk 5.
  • the outlet disc 5 is preferably designed with a relatively sharp-edged limited peripheral surface, so that after overrunning the thread receives a certain spreading. This can advantageously a residual twist on the thread can be reduced.
  • a friction disc is shown, as used in the embodiment of FIG. 1.
  • the friction disk is shown in Fig. 3 in a cross-sectional view and in Fig. 4 in a side view with overflowing thread.
  • the disk geometry can be taken from the representation shown in Fig. 3 here.
  • the friction disc has a pulley diameter D.
  • the pulley diameter D is to be selected as a function of the axial distance between the shafts of the embodiment shown in FIG.
  • the disk diameter D of the friction disk is in the range of 54 mm to 62 mm.
  • the friction disk has a disk width B in the range of 9.5 to 11.5 mm.
  • the disk body 10 of the friction disk can in this case be formed of a ceramic, a plastic, preferably of polyurethane, or of an elastomer, preferably HNBR.
  • FIG. 4 schematically shows the situation in which the friction disk rotates and a yarn 6 contacts the peripheral surface 9.
  • several friction mechanisms are triggered, which are defined essentially by the Eytelwein laws and the Euler rope friction.
  • a tensile force F F and a transverse force F D are generated on the yarn by rotation of the friction disk.
  • the tensile force F F acting in the running direction of the thread 6 represents the so-called conveying component.
  • the transverse force F D acting transversely to the thread running direction is decisively responsible for the twisting of the thread. Beyond the influence of the disk geometry on the conveyor component, the traction over the Slice speed can be influenced.
  • the delivery rate increases with increasing disc speed.
  • PES filaments it is common for PES filaments to select a thread tension ratio of thread tension outlet side to thread tension inlet side of the false twist device, which is less than one. Taking into account such conditions, it is therefore essential for the production of crimped threads that the tensile forces generated in the texturing process by the false twist device F F and transverse forces F D are within the predetermined size ranges.
  • the number and arrangement of the discs on the shafts are exemplary.
  • more than seven or less than seven friction disks may be overlapped to handle a yarn.
  • the invention is not limited to the disc materials mentioned, so the discs of the false twist device could also be made of metal.
  • the choice, arrangement and design of an inlet disc or an outlet disc is also exemplary.

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)
EP04765343A 2003-09-20 2004-09-17 Falschdrallvorrichtung Not-in-force EP1664406B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003143619 DE10343619A1 (de) 2003-09-20 2003-09-20 Falschdrallvorrichtung
PCT/EP2004/010450 WO2005031051A1 (de) 2003-09-20 2004-09-17 Falschdrallvorrichtung

Publications (2)

Publication Number Publication Date
EP1664406A1 EP1664406A1 (de) 2006-06-07
EP1664406B1 true EP1664406B1 (de) 2007-11-14

Family

ID=34305983

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04765343A Not-in-force EP1664406B1 (de) 2003-09-20 2004-09-17 Falschdrallvorrichtung

Country Status (5)

Country Link
EP (1) EP1664406B1 (zh)
CN (1) CN1856602A (zh)
DE (2) DE10343619A1 (zh)
TW (1) TW200513556A (zh)
WO (1) WO2005031051A1 (zh)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5051675B1 (ja) * 2012-02-27 2012-10-17 義一 後藤 摩擦仮撚ディスク
CN103305986A (zh) * 2013-06-25 2013-09-18 苏州锦凯纺织有限公司 一种阶梯式摩擦盘假捻器
CN103894368B (zh) * 2014-03-14 2016-01-27 泉州天宇化纤织造实业有限公司 一种假捻器陶瓷工作盘的表面附着物清洗方法
JP6615496B2 (ja) * 2015-06-01 2019-12-04 Ｔｍｔマシナリー株式会社 仮撚加工機
DE102019112892A1 (de) * 2019-05-16 2020-11-19 Saurer Technologies GmbH & Co. KG Friktionsscheibe für eine Falschdrallvorrichtung
CN111809282B (zh) * 2020-07-01 2022-05-13 杭州勤想实业有限公司 一种用于防静电型花式纱线的假捻机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2213881C3 (de) * 1972-03-22 1978-11-30 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Friktions-Falschdrallvorrichtung
CH564619A5 (zh) * 1973-02-12 1975-07-31 Kugelfischer G Schaefer & Co
US3973383A (en) * 1974-12-26 1976-08-10 Monsanto Company Friction falsetwist device
JPS5361748A (en) * 1976-11-12 1978-06-02 Teijin Ltd Friction falseetwisting apparatus
DE19814921A1 (de) * 1998-04-03 1999-10-07 Temco Textilmaschkomponent Geometrische Anordnung für eine Texturiervorrichtung

Also Published As

Publication number Publication date
TW200513556A (en) 2005-04-16
EP1664406A1 (de) 2006-06-07
WO2005031051A1 (de) 2005-04-07
DE10343619A1 (de) 2005-04-14
CN1856602A (zh) 2006-11-01
DE502004005523D1 (de) 2007-12-27

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