EP0450411B1 - Appareil pour le guidage de matériau fibreux - Google Patents

Appareil pour le guidage de matériau fibreux Download PDF

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Publication number
EP0450411B1
EP0450411B1 EP91104382A EP91104382A EP0450411B1 EP 0450411 B1 EP0450411 B1 EP 0450411B1 EP 91104382 A EP91104382 A EP 91104382A EP 91104382 A EP91104382 A EP 91104382A EP 0450411 B1 EP0450411 B1 EP 0450411B1
Authority
EP
European Patent Office
Prior art keywords
abrasive cleaning
cylinder
grinding
axle
rotational axle
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
EP91104382A
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German (de)
English (en)
Other versions
EP0450411A1 (fr
Inventor
Giancarlo Dr. Mondini
Richard Burri
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.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter 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 Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP0450411A1 publication Critical patent/EP0450411A1/fr
Application granted granted Critical
Publication of EP0450411B1 publication Critical patent/EP0450411B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/60—Arrangements maintaining drafting elements free of fibre accumulations
    • D01H5/62—Non-rotary cleaning pads or plates; Scrapers

Definitions

  • the invention relates to a device for guiding fiber material, such as cotton as lap wadding, tape or roving in a spinning device, in particular in a drafting system, the fiber material at least briefly abutting a cylinder with a jacket made of rubber or a similar plastic, the surface of which is provided by a device to keep contaminants free.
  • the spinning material is guided between the blanket cylinder and the steel cylinder, the successive pairs of cylinders running at different speeds. As a result, the fiber material is stretched between the individual cylinder pairs, the clamping distance between the cylinder pairs being greater than the fiber length of the fiber material.
  • Different strands of the material are brought together and combined after the drafting system. For example, in a ring spinning machine, various fibers come from Lunten and are drawn in the drafting system, the individual fibers being oriented longitudinally and running approximately parallel at the exit after the drafting system. The drawn fibers are then passed on to the spinning ring.
  • the outlet speed in a drafting system of a draw frame is 1000 m / min, in that of a comber 300 m / min.
  • the speed drops to 100 to 150 m / min, while in a flyer it is, for example, 40 m / min.
  • the ring spinning machine "only" runs at about 25 m / min.
  • electrostatic charging can take place especially in the rubber jackets of the cylinders and, for example, sticky layers of honeydew or wax build up on the surface.
  • the surface of the jacket is worn out by the fiber material, this wear being counteracted by a transverse displacement of the fiber bundle during its running by means of a displaceable thread guide. However, this is usually not sufficient, so that the rubber has to be sanded at intervals so that the fiber material does not stick to certain points and wind up.
  • a rubber cylinder of a ring spinning machine for example, has a lifespan of 12,000 to 24,000 hours, during which 10 grinding passes take place. With each sanding, about 0.2 - 0.3mm of the rubber is removed. With the very fast drafting system in one line, the life of the rubber cylinders is only 1,500 to 2,500 hours, and the grinding interval is 150 to 250 hours.
  • the rubber rollers of a drafting system of a combing machine have a lifespan of 15,000 to 20,000 hours with a grinding interval of 1,500 to 2,000 hours.
  • the service life of blanket cylinders in a combing machine is similar; for a flyer it is between 15,000 and 25,000 hours. It is easy to understand that this grinding of the rubber cylinders is very expensive, since there are usually a large number of rubber cylinders.
  • the object of the present invention is to avoid the periodic erosion or grinding of the rubber cylinders.
  • a grinding cleaning device is assigned to the jacket.
  • the grinding-cleaning device can be brought into contact with the jacket of the blanket cylinder continuously or, if desired, only periodically. It is contemplated to add a separate abrasive cleaning device to each rubber jacket that comes into contact with the fiber material. At least this should apply to the rubber cylinders that form the outlet in a drafting system.
  • the grinding cleaning device is intended to avoid the greasiness of the rubber cylinders and to increase their grip. Regrinding is completely unnecessary, since the rubber cylinders are moved until their rubber jacket only has a certain target thickness. Then the rubber cylinders are removed and replaced with new ones. Of course, it is possible to re-cover worn rubber cylinders with rubber.
  • the grinding cleaning device has a grinding cleaning surface which lies against the jacket of the rubber cylinder.
  • This planar system is intended to avoid excessive removal of the jacket and in particular to keep the surface of the jacket ground flat.
  • This embodiment should thus prove to be improved compared to, for example, a scraping edge or the like.
  • a scraping edge or a scraping thread that is guided on the surface of the jacket should also fall under the present inventive concept.
  • not only mechanical grinding cleaning devices are intended, but cleaning could also be carried out using optical means, for example with a very precisely guided laser beam along the surface of the jacket.
  • the ones proposed mechanical grinding cleaning devices in terms of effort considerable advantages.
  • the grinding cleaning surface can be profiled, structured (e.g. with corundum) or thermally coated.
  • the coating can in particular be carried out by plasma spraying, the coating material being, for example, an oxide (aluminum oxide, titanium oxide, chromium oxide, zirconocide or the like) or a carbide mixed with metal binder, e.g. Materials of the cermet class come into question (e.g. chrome carbide with nickel-chrome binder; tungsten carbide with cobalt as metal binder).
  • the metal used up by thermal coating can be ground, brushed or left raw.
  • the grinding-cleaning surface is coated with, for example, a fleece or Velcro material, a grinding wheel material or another material. Corundum grains, for example, can be embedded in the fleece material. In any case, the material must be suitable for gently sanding the rubber surface so that a uniformly flat and clean surface is maintained, the greasiness is low, but the grip is increased.
  • the grinding-cleaning surface can also be diamond-coated, have a surface grain or otherwise, like similar to conventional grinding wheels, be surface-fissured.
  • the grinding cleaning surface is the lower surface of a grinding cleaning wing, which is, for example, a flat one has a rectangular shape, but can also be adapted to the surface of the blanket cylinder, for example in a rounded manner.
  • This cleaning wing should be connected to an axis of rotation so that it lies against the surface of the rubber cylinder, rotating about this axis of rotation.
  • the contact surface will follow the direction of rotation of the cylinder.
  • the grinding cleaning surface extends from the axis of rotation in the direction of rotation of the rubber cylinder over a part of its circumference and its surface rests.
  • the axis of rotation is arranged axially parallel to the cylinder, so that it likewise runs parallel to the surface of the jacket at a certain distance from this surface.
  • the abrasive cleaning wing lies with its own weight on the jacket of the cylinder. It can be shown here that the weight alone is sufficient, provided that the grinding and cleaning surface has a certain profile, structure or coating. However, if the dead weight is not sufficient, it is thought to assign a device for increasing the contact pressure to the grinding-cleaning wing. This then increases the friction and accelerates the abrasion of the rubber jacket.
  • a clamping block is provided to fix the grinding-cleaning device, which is fixed to the axis with appropriate clamping means. This clamping block is penetrated by the above-mentioned axis of rotation, which holds the grinding-cleaning wing. This ensures a fixed relationship between the grinding cleaning device and the blanket cylinder.
  • a lever is to be formed on the clamping block of the axis of rotation, between which and the axis of rotation there is a coil spring or the like.
  • Energy store as a device for increasing the contact pressure.
  • the strength of the contact pressure can then also be influenced via the strength of the coil spring. This is a very simple embodiment and is therefore preferred.
  • other conceivable devices for increasing the contact pressure should also be within the scope of the invention.
  • clamping blocks are provided on both sides of the cylinder, between which the axis of rotation runs, on which the grinding-cleaning wing is fixed. This improves the mounting of this axis of rotation since there is no risk of the free-floating axis of rotation tipping over.
  • the device just mentioned for increasing the contact pressure can be arranged here again.
  • the device according to the invention eliminates the need for periodic grinding of the rubber cylinders and thus eliminates a considerable cost factor.
  • the spinning machine in the present exemplary embodiment it is a ring spinning machine, only a base 3 is shown, on which the above-mentioned swivel joint for the support frame 1 is fixed on the right side at a certain distance.
  • lower cylinders 7, 8 and 9 rotate about their longitudinal axes.
  • the lower cylinders 7, 8 and 9 are generally made of metal, in particular hardened steel, and are structured or profiled on their outer surface in certain areas. These areas are discussed in more detail below. It is also important to mention that these lower cylinders 7, 8 and 9 are driven, their respective drive not being shown in the drawing for the sake of clarity.
  • a corresponding upper cylinder 10, 11 and 12 on the support frame 1 is assigned to each lower cylinder 7, 8 and 9.
  • these upper cylinders are held on the support frame 1 by means of corresponding support straps 13, 14 and 15.
  • the mounting is carried out so that the support straps 13, 14 and 15, respectively, enclose an axis 16, 17 and 18 of the upper cylinders 10, 11 and 12 approximately in the middle and hold them in a clamped manner.
  • the axis 18 is shown in perspective in FIG. 2 and its central region, in which the clamping bracket is held by the carrying strap 15, is identified by 19.
  • the clamping area 19 is flat to ensure the correct positioning of the axis 18 in the support straps 13, 14 and 15.
  • each upper cylinder 10, 11 or 12 has a ball bearing 20, which is only indicated schematically, which enables the upper cylinder 10, 11 or 12 to rotate about the axis 18.
  • each upper cylinder 10, 11 and 12 consists of a cylinder body 21, for example made of plastic or metal, which is covered with a jacket 22 made of rubber or a rubber-like plastic.
  • This jacket 22 interacts with the lower cylinders 7, 8 and 9 when transporting a fiber bundle or ribbon, not shown in detail.
  • a corresponding fiber bundle can run from a sliver into a ring spinning machine to a thread guide 23, after which it passes through a corresponding gap between lower cylinder 7 and upper cylinder 10, lower cylinder 8 and upper cylinder 11, and lower cylinder 9 and upper cylinder 12.
  • the fiber bundle then leaves the drafting unit R and is picked up by a spindle or the like, the fiber bundle being rotated back as far as the lower cylinder 9 and upper cylinder 12 exit. In this way, a thread is then made, which is composed of fibers.
  • the thread guide 23 is otherwise slidably arranged on the bearing block 4 for the lower cylinder 7 in the present exemplary embodiment, so that a fiber bundle can be guided over a large part of the width b of an upper cylinder 10, 11 or 12. At least in this area, the lateral surface of the lower cylinders 7, 8 and 9 is structured or profiled, so that the fiber holder is guaranteed remains.
  • lower cylinder 8 and upper cylinder 11 have an additional band guide for the fiber bundle, with a lower band 24 and an upper band 25 partially wrapping around the respective lower cylinder 8 and upper cylinder 11, respectively.
  • a cage 26 or 27 and a roller or the like attached to its end, not shown in detail, ensure that the lower belt 24 and upper belt 25 lie against one another over a desired distance, thereby improving the guidance of the fiber bundle.
  • a grinding-cleaning device 30 is assigned to each upper cylinder 10, 11 or 12, which as the most important feature has a surface 31 which bears against the rubber jacket 22.
  • the idea of the invention encompasses both a larger area, as shown in FIGS. 2 and 3, but a narrow strip or even a linear support should also fall within the scope of the present invention. It is essential that this grinding-cleaning surface 31 causes a slight removal of the jacket 22 with each revolution of the upper cylinder 10, 11 or 12, the direction of rotation of the upper cylinder being marked with z.
  • the cleaning is carried out solely by the weight of a grinding cleaning wing 32 having the grinding cleaning surface 31 together with the natural unevenness of the grinding cleaning surface 31.
  • this long-lasting interaction alone can lead to a removal of the jacket 22.
  • further coatings of the grinding cleaning surface 31 of the grinding cleaning wing 32 are also within the scope of the invention, for example this surface can be profiled or structured.
  • the grinding-cleaning wing 32 or the grinding-cleaning surface 31 lies flat against the casing 22 over its entire width b. This is the only way to remove the mantle 22 uniformly.
  • an axis of rotation 33 is used for this purpose, which passes through a clamping block 34.
  • This clamping block 34 is placed on the axis 16, 17 and 18, respectively, and has a corresponding slot 35 for inserting the axis 16, 17 and 18. In the position of use, this slot 35 is traversed by corresponding screw bolts 36, wherein when these screw bolts 36 are tightened, the clamping block 34 is clamped on the axis 16, 17 and 18, respectively.
  • a corresponding adjustment of the grinding / cleaning wing 32 can be carried out by rotating the clamping block 34.
  • clamping blocks 34a and 34b are arranged on both sides of the upper cylinder 12b and the upper cylinder 12a.
  • the clamping block 34a is seated on the axis 18a as described above for FIG. 2.
  • the axle 18a passes through an axle stub 40 through the second clamping block 34b beyond the upper cylinder 12b, this clamping block 34b also being held on the axle stub 40 by means of corresponding screw bolts 41, like the clamping block 34a.
  • a continuous axis of rotation 42 is arranged between the clamping block 34a and 34b, which holds the grinding-cleaning wing 32.
  • the advantage of this continuous axis of rotation 42, which is held by both clamping blocks 34a and 34b, is the better possibility of adjustment and ensuring the planar course over the entire width.
  • a cleaning roller 43 is also assigned to the upper cylinder 12, the circumference of which can be covered with a fleece material, for example. This cleaning roller 43 also serves to clean the rubber jacket 22.
  • FIG. 1 Another exemplary embodiment of the invention, ie a grinding cleaning device 30b, is indicated in FIG. 1 itself.
  • the corresponding grinding-cleaning wing 32 is directly from the support frame 1, the grinding-cleaning wing 32 also having an axis of rotation 44 here. Elements which cause the grinding-cleaning vanes 32 to be pressed against the upper cylinder 12 are not shown here.
  • a grinding and cleaning device 30 can also be arranged on an operating device traveling along the spinning machine. Such devices are used, for example, to reattach broken threads between the drafting system and spinning cops.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (13)

  1. Dispositif pour guider de la matière fibreuse, comme le coton en tant que rouleau de nappe, ruban ou mèche dans un arrangement de filage, particulièrement dans un train d'étirage (R), avec un cylindre (12) possédant une enveloppe (22) de caoutchouc ou d'une matière artificielle semblable, dont la surface est garnie d'un arrangement ayant le but de la garder libre de toutes impuretés,
    caractérisé par le fait
    qu'un arrangement de nettoyage par frottement (30) est adjoint à l'enveloppe (22), et où l'arrangement de nettoyage par frottement (30) possède une surface de nettoyage par frottement (31) qui repose sur l'enveloppe (22), et constitue une partie d'une aile de nettoyage par frottement (32) qui possède un axe de rotation (33, 42, 44), et qui s'étend sur une partie de la circonférence du cylindre (10, 11, 12), depuis l'axe de rotation dans le sens de rotation (7) de celui-ci.
  2. Dispositif selon revendication 1,
    caractérisé par le fait que
    la surface de nettoyage par frottement (31) est profilée, structurée ou recouverte thermiquement.
  3. Dispositif selon revendication 1,
    caractérisé par le fait
    qu'une couche de nettoyage par frottement, garnie par exemple d'une matière à longs poils ou accrochante, est superposée à la surface de nettoyage par frottement (31).
  4. Dispositif selon l'une des revendications précédentes,
    caractérisé par le fait que
    l'axe de rotation (33, 42, 44) est disposé d'une manière parallèle à l'axe du cylindre (10, 11, 12).
  5. Dispositif selon au moins l'une des revendications 1 à 4,
    caractérisé par le fait
    qu'un arrangement (39) est adjoint à l'arrangement de nettoyage par frottement (30), dans le but d'augmenter la pression d'appui sur l'enveloppe (22).
  6. Dispositif selon au moins l'une des revendications 1 à 4,
    caractérisé par le fait que
    l'arrangement de nettoyage par frottement (30) est fixé sur un axe (16, 17, 18), autour duquel tourne également le cylindre (10, 11, 12).
  7. Dispositif selon revendication 6,
    caractérisé par le fait que
    l'arrangement de nettoyage par frottement (30) est fixé sur l'axe (18) par un bloc de serrage (34), et où le bloc de serrage (34) est traversé par l'axe de rotation (33) qui maintient l'aile de nettoyage par frottement (32).
  8. Dispositif selon revendication 7,
    caractérisé par le fait
    qu'un bras (37) est formé sur l'axe de rotation (33), de l'autre côté du bloc de serrage (34), et un ressort à boudin (38) ou une réserve de force similaire se trouve entre le bras et l'axe de rotation (18), comme arrangement (39) servant à augmenter la pression d'appui.
  9. Dispositif selon l'une des revendications 1 à 8,
    caractérisé par le fait que
    des blocs de serrage (34a et 34b) sont prévus de chaque côté du cylindre, entre lesquels est encastré l'axe de rotation (42) sur lequel repose d'une manière fixe l'aile de nettoyage par frottement (32).
  10. Dispositif selon au moins l'une des revendications 1 à 5,
    caractérisé par le fait que
    l'arrangement de nettoyage par frottement (30b) est fixé sur un cadre porteur (1) qui maintient également les cylindres (10, 11, 12).
  11. Dispositif selon au moins l'une des revendications 1 à 5,
    caractérisé par le fait que
    l'arrangement de nettoyage par frottement (30c) est constitué d'un corps de pression (45) dont la surface de nettoyage par frottement (31) est adaptée à la surface du cylindre (10, 11, 12).
  12. Dispositif selon revendication 11,
    caractérisé par le fait que
    le corps de pression (45) est chargé par une réserve de force (47).
  13. Dispositif selon au moins l'une des revendications 1 à 5,
    caractérisé par le fait que
    l'arrangement de nettoyage par frottement (30d) est constitué d'une bande flexible (48) garnie de corps de frottement (49), qui entoure partiellement le cylindre (10, 11, 12).
EP91104382A 1990-03-31 1991-03-21 Appareil pour le guidage de matériau fibreux Expired - Lifetime EP0450411B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4010412 1990-03-31
DE4010412A DE4010412A1 (de) 1990-03-31 1990-03-31 Vorrichtung zum fuehren von fasermaterial

Publications (2)

Publication Number Publication Date
EP0450411A1 EP0450411A1 (fr) 1991-10-09
EP0450411B1 true EP0450411B1 (fr) 1995-01-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP91104382A Expired - Lifetime EP0450411B1 (fr) 1990-03-31 1991-03-21 Appareil pour le guidage de matériau fibreux

Country Status (3)

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EP (1) EP0450411B1 (fr)
JP (1) JPH04228624A (fr)
DE (2) DE4010412A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07165324A (ja) * 1993-09-07 1995-06-27 Mas Fab Rieter Ag 繊維機械内で繊維材料を動かすためのローラ装置
DE19739185A1 (de) * 1997-09-08 1999-03-11 Truetzschler Gmbh & Co Kg Vorrichtung an einer Spinnereivorbereitungsmaschine, z. B. Karde, Strecke mit rotierenden glatten Walzen
DE102004003491B4 (de) * 2004-01-23 2007-10-11 Rexroth Mecman Gmbh Vorrichtung zum Führen von Fasermaterial
DE102004039621A1 (de) * 2004-08-09 2006-02-23 Maschinenfabrik Rieter Ag Schleif-Reinigungseinrichtung für Oberwalzen eines Streckwerks
JP2011032618A (ja) * 2009-08-05 2011-02-17 Murata Machinery Ltd ドラフトローラのクリーニング装置、ドラフト装置、及び繊維機械
CN112495038A (zh) * 2020-11-10 2021-03-16 天长市大发化纤有限公司 一种带固液分离机构的涤纶短纤维生产线用固体废料清理机构

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1454316A (en) * 1922-03-20 1923-05-08 Dover Dennis Lee Clearer for the middle steel rollers of spinning frames
US2096923A (en) * 1936-03-10 1937-10-26 John M Schwehm Sons Inc Clearer device for spinning machinery
GB650124A (en) * 1948-05-18 1951-02-14 William Otto Junker Improvements in or relating to bottom roll clearer devices for textile drawing or spinning machines
DE933020C (de) * 1951-05-18 1955-09-15 Armstrong Cork Co Streckwalzen-Putzvorrichtung fuer Spinnereimaschinen
DE1122420B (de) * 1958-04-08 1962-01-18 Rieter Joh Jacob & Cie Ag Abstreifer fuer Druckwalzen mit Gummibelag von Streckwerken an Spinnereimaschinen, insbesondere an Strecken
DE1142781B (de) * 1959-08-20 1963-01-24 Mackie & Sons Ltd J Abstreifvorrichtung fuer die Verzugswalzen von Streckwerken an Spinnereimaschinen
DE1510736A1 (de) * 1962-12-18 1969-07-10 Maehr Dipl Ing Erich A Putzvorrichtung fuer Spinnerei-Streckwerke,Vliesquetschen od.dgl.
DE6945731U (de) * 1969-11-25 1970-02-26 Dyckhoff & Stoeveken Kg Fa Ziehrolle fuer spinnereimaschinen
DE3704745A1 (de) * 1986-02-20 1987-09-24 Barmag Barmer Maschf Fadenlieferwerk mit druckrolle und nachgiebiger gegenrolle

Also Published As

Publication number Publication date
JPH04228624A (ja) 1992-08-18
DE59104355D1 (de) 1995-03-09
DE4010412A1 (de) 1991-10-02
EP0450411A1 (fr) 1991-10-09

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