EP0943022B1 - Falschdrallgeber - Google Patents
Falschdrallgeber Download PDFInfo
- Publication number
- EP0943022B1 EP0943022B1 EP98950067A EP98950067A EP0943022B1 EP 0943022 B1 EP0943022 B1 EP 0943022B1 EP 98950067 A EP98950067 A EP 98950067A EP 98950067 A EP98950067 A EP 98950067A EP 0943022 B1 EP0943022 B1 EP 0943022B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- thread
- false twist
- circumferential surface
- disks
- twist device
- 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
Links
Images
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
-
- 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
- the invention relates to a false twister for a synthetic multifilament thread for use in false twist texturing machines according to the generic term of claim 1.
- a false twister which is from the US, is used for swirling 4,235,071 (Bag. 1110) is known.
- the false twister consists of three Sets of rotating in the same direction arranged on an axis Slices. The axes are on the corner points of an equilateral polygon arranged so that the disks overlap in the center of the polygon.
- the thread is in the center of the polygon by the false twister guided, the thread touching the peripheral surface of the rotating discs and is thus twisted.
- the shape given by the thread by heating and then cooling in the false twist texturing machine fixed, so that a crimp in the Thread is retained.
- polyester threads are opened in the heating zone Temperatures from 190 ° C to 210 ° C, nylon threads from 190 ° C to 205 ° C and Subject to perlon threads of approx. 170 ° C.
- the thread temperature can be changed when entering the False twister> 100 ° C.
- the invention is based on the finding that, while maintaining a stable process with increased thread speed, the thread tension has to be raised less when the disks of the false twister have a correspondingly large radius on their peripheral surfaces contacted by the thread. In terms of measurement technology, a reduction in the coefficient of friction is found.
- circumferential surface means the surface on the disc that is contacted by the thread, with the outer surface the entire surface of the disc (without the end faces).
- threads are preferably made today Machined polyester or polyamide.
- Polyamide threads are preferred with titers ⁇ 170 dtex and polyester threads also with titers from> 170 dtex processed.
- the development of the invention according to claim 2 is therefore used especially for processing polyester threads.
- the invention is Execute false twist according to claim 3.
- the false twister is the circumferential surface radius r in relation to the disc height h formed such that the center of the circumferential surface radius outside the center plane of the disc preferably between the leading edge and the Middle plane of the disc lies.
- This can be used especially for discs with high Coefficients of friction are achieved that the peripheral surface is substantially the same the outer surface and the thread is not over the edges of the end faces running. Due to the twist, the thread is wrapped around the disc so influenced that the thread on the peripheral surface of the disc with with a larger helix angle and with the circumferential surface runs out at a smaller helix angle. Due to the asymmetrical structure the disc is thus only a shorter section of the inlet side Torus area as available on the outlet side.
- the washers can only be used in a certain installation position.
- the end faces are to avoid installation errors during assembly such discs marked (for example with printing, ring groove, etc.).
- the discs of a preferred development of the False twister made from a heat-resistant elastomer.
- the heat resistance of the elastomer enables a thread temperature of more than 100 ° C on the panes.
- the Discs made of a heat-resistant rubber, especially with hydrogen saturated nitrile rubber.
- This material is particularly advantageous since it is also particularly wear-resistant with high heat resistance and also good rubbing properties compared to synthetic multifilament threads having. It is therefore for processing the threads at high Thread speeds and high temperatures are particularly suitable.
- the false twister could, for example, in the Texturing machine according to EP 0 641 877 (Bag. 2147) can be used. Consequently reference is made to the content of this publication.
- the false twister consists of three parallel shafts 4.1, 4.2 and 4.3.
- the shafts 4.1, 4.2 and 4.3 are rotatable in at one end (drive end) a bearing block 1 mounted and arranged such that the waves in each a corner point of an equilateral triangle.
- On the wave 4.1 is a set of discs 3 is attached from the free end to the shaft 4.1.
- the Disc set 3 consists of the individual spaced apart Discs 3.1, 3.2 and 3.3.
- On the shaft 4.2 is the disc set 6 and on the shaft 4.3 the disc set 5 is attached.
- the disc set 6 and the disc set 5 also consist of three spaced apart arranged individual disks.
- the washers of disk sets 3, 5 and 6 overlap in the central area of the wave formed equilateral triangle.
- the shafts 4.1, 4.2 and 4.3 are at the drive end connected to a drive, not shown here.
- the shafts and thus the disks of disk sets 3, 5 are driven and 6 driven in the same direction.
- the drive could, for example, by a Belt drives take place as known from EP 0 744 480 (Bag. 2322). It To this extent, reference is made to this publication.
- the number of disks within a disk set is exemplary. It more or less discs can be attached to a shaft.
- a thread guide 7 is arranged on the inlet side of the false twister. Via the thread guide 7, the thread 2 reaches the overlap area in the essentially in the area of the center of this equilateral triangle. The Thread 2 then becomes helical to the drive side of the false twister guided. Here the discs of disc sets 3, 5 and 6 looped around the circumference of the thread. The thread becomes this with a predetermined withdrawal speed by the false twister downstream delivery plant deducted. Thus, the thread 2 is a False twist impressed, the one upstream of the false twister False twist zone is fixed. To the thread tension losses within the To reduce false twist, the discs have a relatively large Radius on their peripheral surface.
- FIG. 2 is a radial section through a disk of FIG. 1 False twist shown shown.
- the radius r of the peripheral surface 11 is of such a size that that the entire circumferential surface is uniform in the area of the disc height h is curved.
- Fig. 2 is the disk 3.1 of the one shown in Fig. 1 as an example False twist shown.
- the disc is 3.1 symmetrical.
- the center point M of the circumferential surface radius r lies in the central plane 9 of the disk 3.1.
- the peripheral surface 11 is the Thread 2 is looped over the entire disc height h. thread 2 runs on the leading edge 8 on the peripheral surface 11. On the bottom the disc, the thread 2 leaves the peripheral surface 11 via the trailing edge 10.
- the entry angle ⁇ of the thread 2 on the entry side and the outlet angle ⁇ on the outlet side of the disk 3.1 is the same size.
- the circumferential surface radius r is at least 35 times as large as the thread diameter d F of the twisted thread.
- the thread diameter d F can be calculated from the thread titer, the crimp and the density of the thread material. This means that the friction discs can be optimally designed for each thread diameter.
- the thread diameter d F can be determined to be 0.198 mm.
- the radius r of the peripheral surface should have a minimum size of 8 mm.
- the thread diameter d F is calculated to be 0.123 mm.
- the disks of the false twister must have a radius r of, for example, 5 mm on their peripheral surfaces in order to maintain the factor 35.
- FIG. 3 another embodiment of a disc is shown as it 1 could be used in the false twist unit.
- disc shown is not the center M of the circumferential surface radius r in the central plane 9.
- the peripheral surface 11 is within the disc height h asymmetrical.
- the twist on the thread causes the entry angle and the outlet angle of the thread is uneven.
- the inlet angle ⁇ 1 on the inlet side of the disc is smaller than the outlet angle ⁇ 2 on the outlet side of the disc.
- the center must correspond to the angular division on the central plane 9 can be moved.
- the total wrap angle of the thread the disk 3.1 results from the sum of the angles ⁇ 1 + ⁇ 2.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Woven Fabrics (AREA)
Description
- Fig. 1
- schematisch einen Falschdrallgeber;
- Fig. 2 und 3
- die Scheibe eines Falschdrallgebers im Schnitt sowie den Fadenlauf über die Scheibe.
- 1
- Lagerblock
- 2
- Faden
- 3
- Scheibensatz, Scheibe
- 4
- Welle
- 5
- Scheibensatz, Scheibe
- 6
- Scheibensatz, Scheibe
- 7
- Fadenführer
- 8
- Einlaufkante
- 9
- Mittelebene
- 10
- Auslaufkante
- 11
- Umfangsfläche
Claims (6)
- Falschdrallgeber für einen synthetischen Multifilament-Faden zur Verwendung in Falschdrall-Texturiermaschinen, der aus mindestens drei Sätzen von jeweils auf einer Achse angeordneten gleichsinnig rotierenden Scheiben besteht, wobei die Achsen auf den Eckpunkten eines gleichseitigen Vielecks angeordnet sind und die Scheiben sich im Zentrum des Vielecks derart überlappen, daß sie im Zentrum des Vielecks einen schraubenlinienförmig gewundenen Fadenlauf mit ihren Umfangsflächen bilden, dadurch gekennzeichnet, daß die Umfangsfläche der Scheiben die Fläche der Zone einer Kugel oder eines Toroides mit einem im Radialschnitt der Kugel bzw. des Toroides gelegenen Radius (r) mit einer Größe von mindestens den 35-fachen des Durchmessers (dF) des gedrallten Fadens ist.
- Falschdrallgeber nach Anspruch 1, dadurch gekennzeichnet, daß der Umfangsflächenradius (r) bei einem texturierten Faden mit einem Fadentiter > 170 dtex größer als das 35-fache des Durchmessers (dF) des gedrallten Fadens ist.
- Falschdrallgeber nach Anspruch 1, dadurch gekennzeichnet, daß der Umfangsflächenradius (r) bei einem texturierte Faden mit einem Fadentiter < 170 dtex größer als das 40-fache des Durchmessers (dF) des texturierten Fadens ist.
- Falschdrallgeber nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, daß der Umfangsflächenradius (r) im Verhältnis zur Scheibenhöhe (h) derart ausgebildet ist, daß der Mittelpunkt (M) des Umfangsflächenradiuses außerhalb der Mittelebene der Scheibe vorzugsweise zwischen der Einlaufkante und der Mittelebene der Scheibe liegt.
- Falschdrallgeber nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Scheiben zumindest im Bereich der Umfangsfläche aus einem wärmebeständigen Elastomer mit einer Wärmebeständigkeit von größer 100°C besteht.
- Falschdrallgeber nach Anspruch 5 oder nach dem Oberbegriff des Anspruch 1, dadurch gekennzeichnet, daß die Scheiben aus einem wärmebeständigem Kautschuk, insbesondere mit Wasserstoff abgesättigtem Nitrilkautschuk (hydrierter Nitril Butadien Kautschuk (HNBR)) bestehen.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742728 | 1997-09-26 | ||
DE19742728 | 1997-09-26 | ||
PCT/EP1998/006028 WO1999016949A1 (de) | 1997-09-26 | 1998-09-22 | Falschdrallgeber |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0943022A1 EP0943022A1 (de) | 1999-09-22 |
EP0943022B1 true EP0943022B1 (de) | 2001-12-12 |
Family
ID=7843841
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98950067A Expired - Lifetime EP0943022B1 (de) | 1997-09-26 | 1998-09-22 | Falschdrallgeber |
Country Status (6)
Country | Link |
---|---|
US (1) | US6212867B1 (de) |
EP (1) | EP0943022B1 (de) |
KR (1) | KR20000069096A (de) |
CN (1) | CN1097104C (de) |
DE (1) | DE59802429D1 (de) |
WO (1) | WO1999016949A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3739091A1 (de) | 2019-05-16 | 2020-11-18 | Saurer Technologies GmbH & Co. KG | Friktionsscheibe für eine falschdrallvorrichtung |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060057376A1 (en) * | 2004-09-10 | 2006-03-16 | O'mara Joe Jr | Textile yarn having moisture wicking and anti-microbial properties |
JP5051675B1 (ja) * | 2012-02-27 | 2012-10-17 | 義一 後藤 | 摩擦仮撚ディスク |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3705488A (en) * | 1971-05-20 | 1972-12-12 | Turbo Machine Co | Apparatus and method for producing a high degree of twist in yarn |
CH564619A5 (de) * | 1973-02-12 | 1975-07-31 | Kugelfischer G Schaefer & Co | |
US4051655A (en) * | 1975-07-30 | 1977-10-04 | Barmag Barmer Maschinenfabrik Aktiengesellschaft | Friction false twister |
JPS5361748A (en) * | 1976-11-12 | 1978-06-02 | Teijin Ltd | Friction falseetwisting apparatus |
DE2708204C2 (de) * | 1977-02-25 | 1979-04-05 | Feldmuehle Ag, 4000 Duesseldorf | Falschdrallvorrichtung |
DE2812614A1 (de) | 1978-03-22 | 1979-09-27 | Bayer Ag | Verfahren und vorrichtung zum falschzwirnen von garnen ohne fremdantrieb |
US4218870A (en) | 1978-12-18 | 1980-08-26 | Milliken Research Corporation | False twist machine |
US4235071A (en) | 1979-03-05 | 1980-11-25 | Barmag Barmer Maschinenfabrik Aktiengesellschaft | Yarn false twist apparatus |
US5349808A (en) | 1989-06-14 | 1994-09-27 | Barmag Ag | Yarn twisting disc |
-
1998
- 1998-09-22 DE DE59802429T patent/DE59802429D1/de not_active Expired - Lifetime
- 1998-09-22 WO PCT/EP1998/006028 patent/WO1999016949A1/de active IP Right Grant
- 1998-09-22 US US09/308,856 patent/US6212867B1/en not_active Expired - Fee Related
- 1998-09-22 EP EP98950067A patent/EP0943022B1/de not_active Expired - Lifetime
- 1998-09-22 KR KR1019997004560A patent/KR20000069096A/ko active IP Right Grant
- 1998-09-22 CN CN98801414A patent/CN1097104C/zh not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3739091A1 (de) | 2019-05-16 | 2020-11-18 | Saurer Technologies GmbH & Co. KG | Friktionsscheibe für eine falschdrallvorrichtung |
DE102019112892A1 (de) * | 2019-05-16 | 2020-11-19 | Saurer Technologies GmbH & Co. KG | Friktionsscheibe für eine Falschdrallvorrichtung |
Also Published As
Publication number | Publication date |
---|---|
CN1097104C (zh) | 2002-12-25 |
US6212867B1 (en) | 2001-04-10 |
KR20000069096A (ko) | 2000-11-25 |
CN1241228A (zh) | 2000-01-12 |
DE59802429D1 (de) | 2002-01-24 |
EP0943022A1 (de) | 1999-09-22 |
WO1999016949A1 (de) | 1999-04-08 |
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