EP1227179A1 - Garniture de carde - Google Patents

Garniture de carde Download PDF

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Publication number
EP1227179A1
EP1227179A1 EP02001334A EP02001334A EP1227179A1 EP 1227179 A1 EP1227179 A1 EP 1227179A1 EP 02001334 A EP02001334 A EP 02001334A EP 02001334 A EP02001334 A EP 02001334A EP 1227179 A1 EP1227179 A1 EP 1227179A1
Authority
EP
European Patent Office
Prior art keywords
wire
clothing
tip
degrees
carding
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.)
Granted
Application number
EP02001334A
Other languages
German (de)
English (en)
Other versions
EP1227179B1 (fr
Inventor
Werner Hirschle
Jürg Faas
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
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Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP1227179A1 publication Critical patent/EP1227179A1/fr
Application granted granted Critical
Publication of EP1227179B1 publication Critical patent/EP1227179B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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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
    • D01G15/84—Card clothing; Manufacture thereof not otherwise provided for
    • D01G15/86—Card clothing; Manufacture thereof not otherwise provided for with flexible non-metallic backing

Definitions

  • the invention relates to a wire clothing for textile machines, in particular for cards, with a point, the wire set towards the tip two tapering towards each other Has side surfaces, and a method for its production.
  • the invention relates in particular to wire clothing for stationary flat bars or for revolving flat bars of revolving flat aggregates in cards.
  • the carding process of the card plays a crucial role in spinning technology. Like no other sub-process, it influences the quality of the yarn produced as well the productivity of the spinning mill. Carding flakes is done with the help of Clothings.
  • the use of suitable sets is therefore essential for the carding process decisive. Thanks to the constant development of sets, Over the past few years or decades, the productivity of carding has steadily improved become. This development has led to the fact that today the individual work elements the card uses different sets. Have these trimmings completely different properties and are based on the respective sub-process in the Card optimized.
  • the invention according to this application deals exclusively with wire fittings, on all-steel fittings is therefore only in the following received on the edge.
  • carding fiber flakes The purpose of carding fiber flakes is primarily to dissolve the flakes in individual fibers and to align and parallelize the fibers. Carding also fulfills other functions: further cleaning of the fibers (dust and dirt), the dissolution (or reduction) of nits (which actually corresponds to the individual fiber dissolution), the excretion of short fibers and a mixture (homogenization) of the processed fibers.
  • the carding process takes place in the card at different points or on different working elements of the machine. Carding itself is made possible by the interaction of two sets. A basic distinction is made between the arrangement of the clothing between two positions: the carding position and the removal position. A carding effect is basically achieved through both positions (?). That means also in the acceptance position, albeit to a much lesser extent (is that correct?).
  • FIG. 3 shows schematically how the carding process takes place.
  • the teeth of the gamitures 2 and 3 are arranged in the carding position and move against each other (represented schematically by v1 and v2).
  • the figure shows two all-steel sets, but the process basically works with any set of cards that are in the carding position. Instead of the all-steel set 2, a wire set could also be shown.
  • the figure shows how a fiber 1 is held on the tooth 4 of the set 3 (eg the set of the reel) and is transported thereby. If the free end of the fiber 1 is gripped or touched by one or more teeth of the opposite clothing 2, the fiber 1 experiences a tensile force F1 from the clothing 2. This tensile force is transmitted from the free end of the fiber to the end abutting tooth 4 (tensile force F2).
  • the force component A presses the fiber against the clothing and holds it there. It contributes significantly to the carding process. It is it that holds the fibers to the teeth or tips of the clothing and thus allows the clothing to dissolve and align the fibers, almost like a comb.
  • the force component B is a pull-in force that pulls the fiber 1 into the clothing.
  • the retention capacity of the clothing also depends on the force component B.
  • the literature states that carding is carried out primarily by the upper edge 6.
  • Used clothing also has signs of wear on the side edges 7, which is why it can be assumed that the side edges 7 also make a significant contribution to the carding process.
  • How well fibers are held by the clothing elements primarily depends on the sharpness of the edges. Due to the constant processing of the fiber material, the edges of the clothing (especially the edge 6) round off over time and become blunt. As a result, the retention capacity of the clothing decreases and the carding process deteriorates. It is therefore important for the carding process and the retention that the sets are sharp and regrinded if necessary. If one looks at the examples shown in FIGS.
  • the present invention relates to wire clothing for cards (see Figures 5 and 6). Such sets can be found primarily in stationary flat bars or in the revolving flat bars of revolving flat aggregates. However, the invention is not limited to this area of application for wire clothing.
  • the wire sets are in carding position with the all-steel sets of the reel. The most important functions of the card, the single fiber dissolving, the stretching and parallelization of the fibers, are brought about by the interaction between the reel set and the cover set or by their carding work. Carding also has a cleaning function, namely the short fiber, dirt and dust excretion. There must therefore be enough space between the individual wire sets to allow dirt to be deposited (which must be removed periodically).
  • the wire fittings of the cover therefore make a significant contribution to the carding work of the card.
  • the fibers should stick to the all-steel clothing of the reel and the wire clothing of the covers should be aligned or carded.
  • the retention capacity of the all-steel clothing of the reel must therefore be greater than the retention capacity of the lid wire clothing.
  • the wire clothing should only card the fibers and not hold them, ie only touch them to such an extent that they are aligned.
  • Fiber flakes or nits should only stick to the wire clothing to the extent that they are broken down into individual fibers by the increased retention capacity of the all-steel clothing of the reel, whereby the individual fibers are transported on through the all-steel clothing.
  • the wire clothing of the lids would have to have a small contact surface, ie be needle-shaped. In the ideal case, they should have a point-like tip and the smallest possible cross-section without sharp edges (as with the all-steel set), so that the retention is as limited as possible.
  • a wire set that is too thin tends to be unable to withstand the load and to deform.
  • very thin wire clothing can be poorly inserted into the fabric or plastic layers, for example, pierced.
  • FIG. 7 shows a wire clothing 14 in different views with such a side grinding 11.
  • the ground sides are to be understood as meaning those surface areas of the wire clothing that do not lie frontally in the carding direction 15, but are approximately normal to them.
  • the abrasive surface and the retention capacity mentioned above are reduced by grinding and thus the carding efficiency is increased.
  • the clothing tip changes to a sharp degree 17. The individual wire clothing is first inserted into the fabric layer and then ground on the sides of the tip.
  • Wire sets are often made from flat wire, round wire or a biconvex wire and have an (unprocessed) diameter in width B (ie transverse to the carding direction, see FIG. 7) from 0.33 mm to 0.255 mm.
  • FIG. 5 shows, for example, typical semi-rigid sets 8. These are embedded in single or multi-layer, less elastic fabric or plastic layers 9. These semi-rigid sets 8 consist of flat wire, biconvex wire or round wire, can be bent in a U-shape (ie as a double hook, see figure) and have a tip with a side grinding 10.
  • the wire sets When using flat wire, the wire sets usually have no knee 11, with biconvex - Or round wire are common with and without knees. The presence of a knee is irrelevant for the wire clothing according to the invention.
  • Semi-rigid sets are, as mentioned, embedded in less elastic or deeper fabric or plastic layers 9. As a result, the wire can be bent less and hardly moved. The semi-rigid sets 8 can therefore yield much less when loaded than the elastic sets described below. The sets are also mostly hardened.
  • FIG. 6 shows flexible sets 12. These flexible sets 12 are individually (not shown) or as U-shaped double hooks inserted into elastic, possibly multilayered fabric layers 13 (more elastic layers than the fabric layers 9).
  • the flexible sets 12 can also consist of flat wire, biconvex wire or round wire.
  • FIG. 6 shows sets made of flat wire with side cut.
  • the wire sets usually have no knee, when using biconvex or round wire, designs with a knee are also common.
  • the sets are often hardened.
  • the invention can typically be applied to sets, ie wire sets, according to FIGS. 5 and 6, but is not limited to them.
  • the term “wire clothing” is understood to mean both semi-rigid fittings 8 and flexible fittings 12. The application of the idea of the invention relates to such "wire sets”.
  • the term “wire clothing” is in particular not to be understood to mean all-steel clothing with saw tooth wire, as was shown, for example, in FIGS. 1, 2, 3 and 4.
  • the wire sets have to find an optimum in their interaction with the all-steel sets, for example the reel.
  • the wire clothing must not have too high a retention capacity, but it should nevertheless card the fibers.
  • the wire sets of the covers must therefore have the smallest possible contact surface, for example, be needle-shaped with a point-like tip.
  • the tips of the wire clothing maintain their optimal shape (small contact surface due to the sharp tip). Due to the constant carding of fiber material, the tips in the working area of the wire clothing wear out over time and become dull. An example of such a blunt clothing tip is shown in FIG.
  • the service life of the wire clothing is therefore influenced by the aggressiveness and the frequency of regrinding.
  • the object of the present invention is therefore to design a wire clothing in such a way that it needs to be serviced as rarely as possible, ie, regrind.
  • the angle of inclination ⁇ at least one of the two side surfaces 11 has an amount that is less than 5 Degree, particularly preferably it is less than 4.5 degrees.
  • the so-called side grinding usually works maximum up to the so-called knee of the needle 11, i.e. until the needle is bent. This corresponds to a height of about 3 mm away from the tip of the wire trim.
  • the wire set have, as mentioned, a normal wire thickness B transverse to the carding direction of 0.255 to 0.33 mm. This results in a minimum inclination angle ⁇ of 2.43 to 3,148, depending on the wire thickness.
  • the needle can be extended by lengthening the side grinding can be made slimmer or the angle of inclination ⁇ can be reduced. By the smaller angle of inclination ⁇ takes a comparatively longer time until the clothing tip has worn such that the edge surface 16 is formed. This effect is in Figure 11 illustrates.
  • the idea of the invention therefore comprises a wire clothing for textile machines, in particular for cards, with a tip, the wire clothing having two wedge-shaped side faces towards the tip, the side faces having a vertical height h of at least 3 mm towards the clothing tip.
  • the side faces preferably have a vertical height h of 3 mm to 4.5 mm towards the clothing tip.
  • the idea of the invention can also be expressed by the angle of inclination of the ground side surface.
  • the angle of inclination ⁇ of at least one of the two side surfaces must have the following amount: Wire widths B transverse to the carding direction (see figures for value B): Tilt angle ⁇ less than or equal to: Up to 0.255 mm 2.43 degrees Between 0.255 and 0.28 mm 2.43 degrees Between 0.28 and 0.305 mm 2.7 degrees Between 0. 305 and 0.33 mm 2.91 degrees About 0.33 mm 3.15 degrees
  • angle of inclination ⁇ are depending on the wire thickness, i.e. Width B, 2.43 degrees, 2.67 degrees or 2.91 degrees or 3.15 degrees.
  • Wire clothing according to one of the preceding claims characterized in that that the set also has an undercut.
  • the idea of the invention also encompasses the process for the production of these wire clothing for textile machines.
  • the tips of the wire clothing will be provided with a side grinding (side grinding) on one or both sides, so that the clothing has two wedge-shaped side surfaces towards the tip, and the side grinding is carried out in such a way that the side surface resulting from the side grinding or Side surfaces have a height h (see for example FIG. 9 for h) of 3 mm to 4.5 mm, preferably 3.5 mm towards the clothing tip.
  • a relief grinding is preferably also carried out after or before the side grinding.
  • the suitable wire set corresponds to the previous versions. It can consist of flat wire, round wire, or particularly preferably of biconvex wire.
  • the wire diameter transverse to the carding direction B is preferably in the range from 0.255 to 0.33 mm and in the carding direction from 0.355 to 0.43 mm.
  • the wire set is not an all-steel set (e.g. according to Figures 1 or 2). It is not a saw tooth set.
  • the wire clothing preferably has a knee and / or one or more shoulders.
  • the wire clothing according to the invention is preferably used in stationary flat bars and / or in revolving flat bars of a revolving flat aggregate of a card.
  • the upper part of the wire clothing can be equipped with a shoulder 17.
  • FIG. 13 shows two further possible variants, which are encompassed by the invention become.
  • the figure shows two clothing tips, which only have a side cut on one side have received.
  • the other side quasi has an angle of inclination ⁇ of zero on.
  • One variant also has a shoulder.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP20020001334 2001-01-25 2002-01-18 Garniture de carde Revoked EP1227179B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH131012001 2001-01-25
CH1312001 2001-01-25

Publications (2)

Publication Number Publication Date
EP1227179A1 true EP1227179A1 (fr) 2002-07-31
EP1227179B1 EP1227179B1 (fr) 2005-12-28

Family

ID=4389505

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020001334 Revoked EP1227179B1 (fr) 2001-01-25 2002-01-18 Garniture de carde

Country Status (2)

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EP (1) EP1227179B1 (fr)
DE (1) DE50205392D1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1411157A1 (fr) * 2002-10-18 2004-04-21 Hollingsworth GmbH Carde avec garniture de chapeaux présentant des pointes meulées à zéro degrés
WO2006136479A1 (fr) * 2005-06-24 2006-12-28 Nv Bekaert Sa Chapeau de carde dont la garniture de carde comporte un revetement dur
WO2008144950A1 (fr) * 2007-06-01 2008-12-04 Maschinenfabrik Rieter Ag Garniture flexible
DE102007037055A1 (de) 2007-07-24 2009-01-29 Graf + Cie Ag Drahtgarnitur für eine Textilmaschine
CN108342793A (zh) * 2018-03-20 2018-07-31 武汉纺织大学 一种提高纤维梳理质量的盖板针布及梳理机
CN108456954A (zh) * 2018-04-20 2018-08-28 青岛大学 一种双面斜纹道夫针布

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ306426B6 (cs) * 2014-10-31 2017-01-18 Technická univerzita v Liberci Kotouč pro vyčesávání vlasu na povrchu plstěných polotovarů a zařízení pro vyčesávání vlasu na povrchu plstěných polotovarů osazené tímto kotoučem

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1232172A (fr) * 1969-11-11 1971-05-19
DE2539089A1 (de) * 1975-09-03 1977-03-17 Skf Kugellagerfabriken Gmbh Vorreisserwalze mit einer zahngarnitur
GB1474889A (en) * 1973-10-04 1977-05-25 English Card Clothing Card clothing
US4537096A (en) * 1978-09-06 1985-08-27 Hollingsworth John D Metallic card clothing and method and apparatus for making same
US5701637A (en) * 1995-08-07 1997-12-30 Graf+Cie Ag Kratzen- Und Maschinenfabrik Sawtooth wire for all-steel clothing

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1232172A (fr) * 1969-11-11 1971-05-19
GB1474889A (en) * 1973-10-04 1977-05-25 English Card Clothing Card clothing
DE2539089A1 (de) * 1975-09-03 1977-03-17 Skf Kugellagerfabriken Gmbh Vorreisserwalze mit einer zahngarnitur
US4537096A (en) * 1978-09-06 1985-08-27 Hollingsworth John D Metallic card clothing and method and apparatus for making same
US5701637A (en) * 1995-08-07 1997-12-30 Graf+Cie Ag Kratzen- Und Maschinenfabrik Sawtooth wire for all-steel clothing

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1411157A1 (fr) * 2002-10-18 2004-04-21 Hollingsworth GmbH Carde avec garniture de chapeaux présentant des pointes meulées à zéro degrés
DE10248776B3 (de) * 2002-10-18 2004-09-09 Hollingsworth Gmbh Karde mit einer, eine Ganzstahlgarnitur aufweisenden Trommel
WO2006136479A1 (fr) * 2005-06-24 2006-12-28 Nv Bekaert Sa Chapeau de carde dont la garniture de carde comporte un revetement dur
WO2008144950A1 (fr) * 2007-06-01 2008-12-04 Maschinenfabrik Rieter Ag Garniture flexible
DE102007037055A1 (de) 2007-07-24 2009-01-29 Graf + Cie Ag Drahtgarnitur für eine Textilmaschine
CN108342793A (zh) * 2018-03-20 2018-07-31 武汉纺织大学 一种提高纤维梳理质量的盖板针布及梳理机
CN108342793B (zh) * 2018-03-20 2023-11-17 武汉纺织大学 一种提高纤维梳理质量的盖板针布及梳理机
CN108456954A (zh) * 2018-04-20 2018-08-28 青岛大学 一种双面斜纹道夫针布
CN108456954B (zh) * 2018-04-20 2023-05-09 青岛大学 一种双面斜纹道夫针布

Also Published As

Publication number Publication date
DE50205392D1 (de) 2006-02-02
EP1227179B1 (fr) 2005-12-28

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