EP1697569B1 - Surface d'appui et element d'appui - Google Patents

Surface d'appui et element d'appui Download PDF

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Publication number
EP1697569B1
EP1697569B1 EP04735717A EP04735717A EP1697569B1 EP 1697569 B1 EP1697569 B1 EP 1697569B1 EP 04735717 A EP04735717 A EP 04735717A EP 04735717 A EP04735717 A EP 04735717A EP 1697569 B1 EP1697569 B1 EP 1697569B1
Authority
EP
European Patent Office
Prior art keywords
roller
elements
working
bearing element
bearing
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
EP04735717A
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German (de)
English (en)
Other versions
EP1697569A1 (fr
Inventor
Emil Medvetchi
Roland Styner
Paul Cahannes
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
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Publication date
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Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP1697569A1 publication Critical patent/EP1697569A1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/28—Supporting arrangements for carding elements; Arrangements for adjusting relative positions of carding elements

Definitions

  • the invention relates to a bearing surface for the end portions of working elements which span a roller of a spinning machine, for example a carding element, a knife, a shuttering element or a grate bar.
  • Garnished rolls are used in many areas of spinning machines. These rollers usually have at least two roller blades or flanges on the end face, in which on the one hand the roller is rotatably mounted and on the other hand may comprise support elements for receiving and / or supporting additional working elements.
  • the working elements have in common that they are slightly longer than the working width of the roller, and rest on the left and right on the support elements, for example, segmental arch, top segments or (flexible) bows, which are also partially adjustable.
  • stationary working elements which are arranged stationary, for example carding elements, shuttering elements, knives, grates, or guide elements
  • moving working elements which by means of an endless circulating belt, for example a chain or a belt, be pulled over the support surface of the support elements, for example, the cover of a card.
  • the working elements may take the form of plates or bars and they always have a side which is located opposite the set of the roller.
  • the distance between this side and the clothing of the roller is set as precisely as possible. This setting affects, depending on the function of the segment, among others, the carding quality. Especially with carding segments, a close distance to the roller increases the carding quality and reduces the number of nits in the end product as well as the dirt removal.
  • EP 790 338 describes an adjustment device on a card, with adjustable support elements are mounted in the form of an arc on the drum signs. These support elements are the basis for the various stationary working elements which are arranged over the working width of the roller and fastened with a simple screw. The various stationary working elements can be adjusted together to adjust the distance between the working elements and the clothing of the roller by means of the adjusting screws of the support elements. (Please refer EP 790 338 Figures 7 to 10 and the associated description).
  • the stationary working elements at the end portions have flat, straight zones that can rest on the straight bearing surfaces of the support element.
  • a spring assembly between the head of the screw and the opposite surface of the end portion of the stationary working element is provided.
  • the spring assembly of the contact pressure between the working element and the bottom of the end part (especially near the screw) is limited. This allows the working element to extend in its longitudinal direction during operation (i.e., in the direction of the working width of the machine). This expansion possibility must be given because during operation the card heats up and thus all the elements expand.
  • This adjustment device has the disadvantage that when the individual stationary working elements on the support element, the exact position is not achieved in the screw, this has an impact on the carding gap (distance roller working element) and thus on the Kardierlautohn.
  • the manufacture of the construction therefore requires a high precision, with low tolerance limit.
  • the optimal adjustment of the distance is only possible if the bearing surface lies on one side and parallel to the roller surface on both sides.
  • the support elements for example in an inclined position, whereby the support surface If something is tilted outwards, this can result in the stationary working element being pulled hollow - in other words curved.
  • An inverse effect can occur if the support elements are tilted inwards.
  • the working element can be pulled bulbous by the attachment. This creates more of a wide gap in the edge areas and a narrower in the middle of the working element.
  • the pressure of the endless belt on the lid of a revolving flat card is comparable to the pressure of the fastening screw of a stationary working element. Also, this force can exert an undesirable effect on the carding gap at a tilt of the support surface.
  • the invention has for its object to provide a device of the type described above, which avoids the disadvantages mentioned, in particular designed the support point between the working element and support element so that a force on the support point of the working element the undesirable influence on the distance to be set, between the set of the roller and the roller opposite side of the working element, over the entire working width of the roller, reduced or eliminated.
  • Figure 1 shows a Wanderdeckelkarde 1, z.
  • Example the Rieter card C60 with a working width of 1.5 meters, with a hopper 2.
  • fiber flakes are transported through transport channels (not shown) through the various Putzereireastin and finally fed into the hopper of the card. This then passes the fiber flakes to the card as cotton wool.
  • the feed roller and feed trough feed the fiber flakes to the lickerins 6.
  • the lickerins open the fiber flakes and remove some of the debris.
  • the last licker-in roller transfers the fibers to the carding drum 3.
  • the carding drum 3 cooperates with the lids 4, thereby further parallelizing the fibers.
  • Stationary work elements can basically be assigned to each roller of the card.
  • the lickerins 6 and the drum 3 are very often equipped with cleaning elements such as knives or carding elements.
  • the exact number of work elements and their sequence can vary from card to card. Basically, however, the rollers are completely covered, so that no fibers, dirt and dust can escape.
  • At the takeover point from roller to roller one finds rather guide elements.
  • the rollers in the hopper stationary working elements can be arranged, for example, discloses the EP 787841 Cleaning elements that are assigned to the dissolution point. Even individual knives or grate bars can be assigned to cleaning rollers in other cleaning machines such as coarse or fine cleaners.
  • the drum 3 can be divided into four sub-areas.
  • the revolving lids form the main carding zone 4, while the pre-, post- and sub-carding zones are usually equipped with stationary working elements.
  • stationary working elements may be cover elements or shuttering elements, carding elements, knives, possibly with a suction device, or guide elements.
  • the inventive fastening device can generally be used in the various stationary working elements.
  • the stationary working elements span the working width of the drum and have the same fastening devices on both end parts.
  • the fastening device of an end portion is shown schematically, viewed over the working width of the card.
  • FIG. 2A a part of the device is drawn again, the different areas being shown more clearly.
  • the end part 28 can be designed differently.
  • the bearing surface 29 is essential for the fastening device according to the invention.
  • the bearing surfaces of the working element 29 and of the bearing element 30 are preferably opposite each other.
  • a combination of spherical washer - ball socket in the attachment of the support element on the drum shield a possible inclination of the support element minimize but not completely eliminated.
  • skew can be caused by machining errors during production or by the suit during assembly.
  • Figure 3 greatly simplifies the forces acting on both bearing surfaces (only the support element and the end of the working element are shown.)
  • Figure 3A shows the ideal support - both support surfaces 29 and 30 lie on the same plane, resp. the forces F and F A lie on the same line of action. There is no leverage effect, the work item is not deformed.
  • FIG. 3B shows an exaggerated oblique position of the support element. Since the forces do not lie on the same line of action, the force of the working element on the support element creates a lever effect which deforms the working element (hollow or bulbous).
  • Figure 3C shows a first inventive solution.
  • the edges of the support element are chamfered over the entire arc.
  • the support point which represents the pivot point for the lever effect, moves closer to the point where the force F acts on the working element or the distance between the lines of action becomes smaller, ie a lesser moment acts. This reduces the unwanted leverage effect.
  • the bevel also reduces the effective contact surface. To achieve a balance of the two forces F and F A , a pointed contact point would be the ideal solution. Disadvantage of this solution is that only one support point is present, which may have a hollow or Bauchig convinced the working element result. Since the support point is arranged fixed, there is no improvement even at a lower angle of the support element.
  • An inventive bearing surface preferably provides that the bearing surface of the bearing element is cambered - that is to say has a curvature in cross-section - such as shown schematically in Figure 3D.
  • Each point on the radius R can serve as a support point.
  • an improvement - that is, a reduction - the tilt, also have a lower leverage effect.
  • the rounded surface has the further advantage that the thermal expansion of the working elements in the working direction of the roller can not be inhibited.
  • the radius R of the support surface is reduced, the support surface is rounder and the expected leverage effects are thereby in an even smaller area.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (7)

  1. Elément d'appui (20) pour les parties terminales (28) d'éléments opérationnels (26) enjambant un cylindre d'une machine de tissage, la surface d'appui (30) de l'élément d'appui (20) étant disposée au niveau d'une surface frontale du cylindre, caractérisé en ce que la surface d'appui (30) de l'élément d'appui (20) présente une surface supérieure à section transversale courbée.
  2. Elément d'appui (20) pour les parties terminales (28) d'éléments opérationnels enjambant un cylindre d'une machine de tissage, la surface d'appui (30) de l'élément d'appui (20) étant disposée au niveau d'une surface frontale du cylindre, caractérisé en ce que la surface d'appui (30) de l'élément d'appui (20) présente des bords biseautés en section transversale.
  3. Elément d'appui (20) selon la revendication 1 ou 2, caractérisé en ce que les éléments d'appui (20) sont conçus pour des éléments opérationnels en mouvement.
  4. Elément d'appui (20) selon une des revendications précédentes, caractérisé en ce que l'élément d'appui (20) est disposé de manière à pouvoir se déplacer.
  5. Elément d'appui (20) selon une des revendications précédentes, caractérisé en ce que l'élément d'appui (20) est une partie de la bride du cylindre.
  6. Elément d'appui (20) selon la revendication 4, caractérisé en ce que l'élément d'appui (20) est installé sous forme d'un arc sur les brides du cylindre.
  7. Carde, caractérisée en ce qu'à au moins un des cylindres est associé un élément d'appui (20) selon une des revendications 1 à 6.
EP04735717A 2003-06-03 2004-06-02 Surface d'appui et element d'appui Expired - Lifetime EP1697569B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH9812003 2003-06-03
PCT/CH2004/000332 WO2004106603A1 (fr) 2003-06-03 2004-06-02 Surface d'appui et element d'appui

Publications (2)

Publication Number Publication Date
EP1697569A1 EP1697569A1 (fr) 2006-09-06
EP1697569B1 true EP1697569B1 (fr) 2008-01-16

Family

ID=33480361

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04735717A Expired - Lifetime EP1697569B1 (fr) 2003-06-03 2004-06-02 Surface d'appui et element d'appui

Country Status (6)

Country Link
US (1) US20070140603A1 (fr)
EP (1) EP1697569B1 (fr)
CN (2) CN100519848C (fr)
BR (1) BRPI0410961A (fr)
DE (1) DE502004005995D1 (fr)
WO (1) WO2004106603A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH704443A1 (de) * 2011-02-01 2012-08-15 Rieter Ag Maschf Vorrichtung zur Befestigung einer flexiblen Garnitur.
DE102011110671A1 (de) * 2011-08-19 2013-03-28 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Karde für Baumwolle, Chemiefasern u. dgl., die zwischen einem Abnehmer und zwei Quetschwalzen angeordnet ist

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3811679A1 (de) * 1988-04-07 1989-10-19 Rieter Ag Maschf Befestigung fuer einen stationaeren deckel einer karde
JPH03180517A (ja) * 1989-12-06 1991-08-06 Mas Fab Rieter Ag カード
EP0627507B2 (fr) * 1993-06-03 2003-08-27 Maschinenfabrik Rieter Ag Machine de cardage avec chapeaux mobiles
DE9313633U1 (de) * 1993-09-09 1993-12-16 Maschinenfabrik Rieter Ag, Winterthur Verstellvorrichtung für Arbeitselemente an einer Karde
US5625924A (en) * 1994-07-29 1997-05-06 Maschinenfabrik Rieter Ag Method for producing a card sliver and carding machine therefor
US6269522B1 (en) * 1998-11-24 2001-08-07 Graf & Cie Ag Method of operating a card and a card flat for carrying out the method
DE10037710A1 (de) * 2000-08-02 2002-02-14 Rieter Ag Maschf Vorrichtung zum Einstellen des Arbeitsspaltes zwischen den Spitzen von Deckelgarnituren und den Spitzen der Trommelgarnitur einer Karde

Also Published As

Publication number Publication date
CN101397699B (zh) 2011-10-05
CN1798885A (zh) 2006-07-05
EP1697569A1 (fr) 2006-09-06
BRPI0410961A (pt) 2006-07-11
CN100519848C (zh) 2009-07-29
WO2004106603A1 (fr) 2004-12-09
CN101397699A (zh) 2009-04-01
DE502004005995D1 (de) 2008-03-06
US20070140603A1 (en) 2007-06-21

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