WO2004079063A1 - Opening cylinder for rotor spinning machines - Google Patents
Opening cylinder for rotor spinning machines Download PDFInfo
- Publication number
- WO2004079063A1 WO2004079063A1 PCT/EP2004/001298 EP2004001298W WO2004079063A1 WO 2004079063 A1 WO2004079063 A1 WO 2004079063A1 EP 2004001298 W EP2004001298 W EP 2004001298W WO 2004079063 A1 WO2004079063 A1 WO 2004079063A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- teeth
- opening roller
- tooth
- opening
- rows
- Prior art date
Links
Classifications
-
- 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
- D01H4/30—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls
- D01H4/32—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls using opening rollers
Definitions
- the invention relates to an opening roller for
- Such release rollers serve to dissolve a sliver in individual fibers.
- the individual fibers are then fed from the opening roller through a fiber guide channel to the spinning rotor of the rotor spinning machine and spun into a thread.
- the opening roller rotating at high speed, it is important that the entrainment of the individual fibers by the opening roller takes place to a sufficient extent and the detachment of the individual fibers from the opening roller, which is caused by the centrifugal force and the negative pressure prevailing at the mouth of the fiber guide channel is not disabled.
- DE 41 24 714 AI describes that fiber stretching takes place as long as the fibers of the sliver are still held by the feed roller.
- the single fiber is released from the fiber beard by the opening roller, accelerated and transported on.
- the tooth flanks should not be too smooth to promote entrainment, but should have a certain roughness.
- the stripping zone of the release roller on this roughness is j edoch undesirable and hinders the separation of the fibers from the roller on the solvent.
- DE 41 24 714 AI-described opening roller openings' by which is sucked in air in the dissolving area and air is blown out in the detaching area.
- DE 195 09 743 AI shows an opening roller, in which the entrainment of the individual fibers through the teeth of the opening roller is to be improved in that the area of the tooth flanks is enlarged by a specific design of the tooth back.
- the larger area is intended to increase the friction between tooth flanks and fibers and thus improve the entrainment of the fibers from the tooth flanks.
- the detachment of the fibers taken out of the clothing after combing was not hindered by the greater inclination of the tooth back. It is a good compromise between the spin technically desired effects of combing, 'taking and detachment of the fibers have been achieved in this .Welse.
- the object is achieved with an opening roller with the features of claim 1 and with a sawtooth wire with the features of claim 7.
- the angle K was apparently of no importance.
- the angle K for a spiral tooth row is about 0.5 °.
- the slight change in the angle K according to the invention leads to a surprisingly significant improvement in the function of the opening roller.
- the formation of the opening roller according to the invention improves the entrainment of the fibers at the combing-out point, without this leading to poorer detachment of the individual fibers from the opening roller in the region of the mouth of the fiber guiding channel, as with an increase in roughness which serves the same purpose.
- the tooth flanks can be made smoother than the surface roughness according to the known state of the art, as a result of which the individual fibers can be detached from the opening roller more easily without the entrainment of the fibers at the combing point becoming insufficient.
- a smoother surface of the tooth flanks advantageously counteracts fiber damage and a strong occurrence of dust and fiber parts in the area of the spinning rotor.
- An embodiment according to claim 3 leads to a dense distribution of the teeth on the circumference of the clothing ring, whereby a sufficiently large number of tooth interventions in the fiber material presented and thus the required dissolving effect is ensured.
- the teeth are subject to heavy wear during spinning, which reduces their effectiveness when the sliver is combed out.
- the tooth set must be replaced.
- the replacement can be made particularly quickly and easily.
- only the ' sawtooth wire needs to be replaced when the teeth wear.
- the value of the angle K can be reached or increased in order to achieve a value according to the invention without having to change the direction of the rows formed by the teeth.
- the angular division of the leading tooth flank of the teeth can advantageously be produced together with the punching out of the tooth shape by deformation or by material removal.
- an opening roller according to the invention at a spinning station brings about an improved entrainment and detachment of the individual fibers as well as a reduction in contamination and leads to an increase in the quality of the yarn that is produced at this spinning station.
- FIG. 1 is a simplified schematic diagram of a rotor spinning device, partly in section,
- FIG. 2 is an enlarged schematic representation of a set of teeth equipped with teeth in partial view
- FIG. 3 shows a side view A of a section of a row of teeth of FIG. 2, partly in section,
- Fig. 4 is a simplified representation of a portion of a sawtooth wire in plan view.
- the opening device 1 shown in FIG. 1 comprises a opening roller 4 rotating in a housing 2 in the direction of the arrow 3.
- a feeding device 5 is arranged in front of the opening device 1, by means of which a sliver 6 is fed to the opening roller 4.
- the feed device 5 comprises a feed roller 8 which rotates very slowly in the direction of the arrow 7 with respect to the opening roller 4 and which cooperates with a feed table 29 and forms together with this a nip 9 for the sliver 6.
- the feed roller 8 rotates continuously and feeds the fibers of the sliver 6 to the opening roller 4.
- the opening roller 4 has a plurality of outwardly directed teeth 10 on the circumference.
- the individual fibers are released from the opening roller 4 by the interaction of centrifugal force and a suction force exerted by the fiber guide channel 12 and transported through the fiber guide channel 12 into the spinning rotor 13.
- the suction force arises from negative pressure, which is generated in the region of the spinning rotor 13 by means of a vacuum source, not shown.
- the fibers are drawn off from the spinning rotor 13 through a fiber draw-off tube 14 as finished yarn 15.
- opening rollers at spinning positions of rotor spinning machines can be found, for example, in DE 41 24 714 AI or DE 195 09 743 AI.
- FIG. 2 shows a clothing ring 16 which is bordered laterally by ring bundles 17, 18 and has a large number of teeth 10 on its circumference.
- the direction of rotation of the clothing ring 16 is indicated by the directional arrow 27.
- the teeth 10 are arranged in rows 20 which run around the circumference 'of the clothing ring 16.
- the rows 20 of the teeth 10 are only shown in sections for reasons of simplification.
- the teeth 10 of the rows 20 are each formed symmetrically to a plane of symmetry along the center line 21. Further rows are represented by sections of center lines 21 shown in broken lines. Center lines 21 of adjacent, rows 20 formed by teeth 10 are at a distance D from each other of 2 mm.
- the shape of the teeth 10 is shown in Figure 3.
- the essential surfaces of the teeth 10 are the tooth face 22, tooth back 23 and tooth flanks 24, 25, only one of the two tooth flanks 24, 25, namely the tooth flank 25, being visible in the illustration in FIG. 3.
- the surface of the tooth face 22 extends transversely to the center line 21.
- the direction of rotation in which the teeth 10 move is indicated by the direction arrow 26. Due to the contact with the tooth flank 25, the individual fibers 28 shown as examples in FIG. 3 are carried along and accelerated by the teeth 10.
- the tooth flanks 24 and 25 are parallel to each other and parallel to the center line 21 of row 20.
- the tooth flanks 24 and 25 and the center line 21 of the series 20 form with the direction indicated by the direction arrow 27 'rotational direction of the opening roller 4 at an acute Angle K, which is carried out in Figure 2 with 1.7 °. Due to the inclined position at an angle K to the direction of rotation, the tooth flank 25 of the tooth flank 24 in each case leads somewhat offset.
- FIG. 4 shows a section of a sawtooth wire 30 wound on the opening roller 4.
- the sawtooth wire 30 is wound in such a way that the center line 31 running in its longitudinal direction corresponds to the direction of rotation of the saw tooth
- Teeth 32 forms an acute angle ⁇ .
- the direction of rotation is indicated by the arrow 33.
- the design and the arrangement of the teeth 32 is such that their leading tooth flanks 34 form an angle ⁇ with the center line 31 running in the longitudinal direction of the sawtooth wire 30 and the angle K with the direction of rotation of the teeth 32.
- the invention is not limited to the embodiment shown in the figures.
- the tooth shape can be designed alternatively.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Preliminary Treatment Of Fibers (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04710356A EP1604053B1 (en) | 2003-03-07 | 2004-02-12 | Opening cylinder for rotor spinning machines |
BR0406478-0A BRPI0406478A (en) | 2003-03-07 | 2004-02-12 | Opening cylinder for rotor spinning machines |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10309926 | 2003-03-07 | ||
DE10309926.3 | 2003-03-07 | ||
DE10335275.9 | 2003-08-01 | ||
DE10335275A DE10335275B4 (en) | 2003-03-07 | 2003-08-01 | Opening roller for rotor spinning machines |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004079063A1 true WO2004079063A1 (en) | 2004-09-16 |
Family
ID=32963514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/001298 WO2004079063A1 (en) | 2003-03-07 | 2004-02-12 | Opening cylinder for rotor spinning machines |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1604053B1 (en) |
BR (1) | BRPI0406478A (en) |
WO (1) | WO2004079063A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016117614A1 (en) | 2016-09-19 | 2018-03-22 | Saurer Germany Gmbh & Co. Kg | Rotor spinning device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0013169A1 (en) * | 1978-12-26 | 1980-07-09 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | An improvement of a combing roller utilized for an open-end spinning machine |
US5555714A (en) * | 1993-06-03 | 1996-09-17 | Rieter Elitex | Combing roller |
DE10209008A1 (en) * | 2002-02-26 | 2003-09-04 | Stahlecker Gmbh Wilhelm | Set carrier for an opening roller |
-
2004
- 2004-02-12 EP EP04710356A patent/EP1604053B1/en not_active Expired - Lifetime
- 2004-02-12 BR BR0406478-0A patent/BRPI0406478A/en not_active IP Right Cessation
- 2004-02-12 WO PCT/EP2004/001298 patent/WO2004079063A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0013169A1 (en) * | 1978-12-26 | 1980-07-09 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | An improvement of a combing roller utilized for an open-end spinning machine |
US5555714A (en) * | 1993-06-03 | 1996-09-17 | Rieter Elitex | Combing roller |
DE10209008A1 (en) * | 2002-02-26 | 2003-09-04 | Stahlecker Gmbh Wilhelm | Set carrier for an opening roller |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016117614A1 (en) | 2016-09-19 | 2018-03-22 | Saurer Germany Gmbh & Co. Kg | Rotor spinning device |
Also Published As
Publication number | Publication date |
---|---|
EP1604053A1 (en) | 2005-12-14 |
BRPI0406478A (en) | 2005-12-06 |
EP1604053B1 (en) | 2010-06-09 |
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