EP3693498B1 - Deckelgarnitur für einen wanderdeckel einer karde - Google Patents

Deckelgarnitur für einen wanderdeckel einer karde Download PDF

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Publication number
EP3693498B1
EP3693498B1 EP20152345.3A EP20152345A EP3693498B1 EP 3693498 B1 EP3693498 B1 EP 3693498B1 EP 20152345 A EP20152345 A EP 20152345A EP 3693498 B1 EP3693498 B1 EP 3693498B1
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EP
European Patent Office
Prior art keywords
row
zone
clothing
rows
flat
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.)
Active
Application number
EP20152345.3A
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German (de)
English (en)
French (fr)
Other versions
EP3693498A1 (de
Inventor
Christian Dratva
Manuel Koch
Günter Steinbach
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.)
Graf und Cie AG
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Graf und Cie AG
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Publication date
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Publication of EP3693498A1 publication Critical patent/EP3693498A1/de
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Publication of EP3693498B1 publication Critical patent/EP3693498B1/de
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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
    • D01G15/14—Constructional features of carding elements, e.g. for facilitating attachment of card clothing
    • D01G15/24—Flats or like members
    • 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
    • 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 flat clothing for a revolving flat of a card with a working width for processing fibers in a grain direction transverse to the working width, with a foundation which has a length corresponding to the working width and a width seen in the grain direction, and with a large number of clothing points which are formed from U-shaped wire hooks, which are pierced through the foundation, from a wire with a cross-sectional width with legs forming two points and a back with a back length connecting the two legs.
  • the legs each have a tip axis.
  • the wire hooks are arranged in rows side by side with a distance between the opposing tip axes and the ridges with a ridge axis connecting the tip axes in the direction of the working width.
  • a row offset in the direction of the working width, as a result of which wire hooks are not arranged one behind the other in consecutive rows seen in the grain direction, and a row spacing between two consecutive rows are provided.
  • the function of the card is, among other things, the separation of the smallest knots (neps) and shell parts with fibers (seed coats), which can no longer be broken down into individual fibers in the subsequent processes.
  • the shell parts and neps result in thick and thin places in the yarn, which can lead to a reduction in the quality of the yarn and thus a reduction in the sales price.
  • the card must also remove dust, which is in the form of dust particles consisting of stones, sand, dirt and very small fibers in the fiber material is included.
  • covers are attached opposite the carding drum in the form of fixed or revolving covers. Clothings are provided on the flats, which work together with the clothings present on the carding drum. This cooperation leads to the cleaning and longitudinal orientation of the fibers.
  • figure 2 shows a schematic representation of a carding process between a drum clothing 13 and a revolving flat with a flat clothing 14 with a plurality of clothing points 23.
  • the flat clothing 14 has a width G.
  • the direction of rotation of the carding drum and thus the direction of movement of the fiber material 15 held by the drum clothing 13 are indicated by the arrow 17 .
  • the revolving flat is moved in direction 16 by the revolving flat unit.
  • the cylinder clothing 13 is moved much faster than the revolving flat and thus the flat clothing 14, which means that the direction of movement 16 of the revolving flat for the explanations is not important.
  • the fiber material 15 picked up by the drum clothing 13 is guided past the revolving flat or the flat clothing 14 in a fiber running direction C. Due to the friction between the flat clothing 14 and the fiber material 15 with the support of the centrifugal force due to the rotation of the drum, individual fibers initially get stuck on the clothing tips 23 . They serve as an aid for catching trash parts and dirt residues such as leaf parts 18, dust particles 19, stalk parts 20, shell parts 21 and fiber neps 22.
  • Dust particles 19 can only be properly caught with the cover when a sufficiently tight filter has been created by the fibers taken up , wherein the dust particles 19 get stuck.
  • Another place of excretion is the space between the revolving covers. Once the revolving flats have been filled and run sufficiently in the process, fiber bridges form between the revolving flats. Furthermore, air is pushed through between the revolving flats and sucked out by the centrifugal force. This zone can be observed above all at the infeed of the drum.
  • Another point for good dissolution of the flakes and fibers is the first edge of each hiking cover. This must break up the remaining tufts that have not been broken up by the blowroom and pre-carding zone before the parallelization process can take place.
  • Filling of the flat clothing 14 is determined, among other things, by the design of the flat clothing 14. At the same time, the fibers of the fiber material 15 remaining in the drum clothing 13 are aligned parallel to the direction of movement 16 by the clothing points 23. The carding process is intended on the one hand to clean the fibrous material 15 and on the other hand to even out the position of the individual fibers.
  • the revolving flats basically fulfill four functions: they should break up the fiber tufts down to the individual fibres, separate out disruptive particles, break up fiber tears and parallelize and orient the fibers. Since, as described above, dirt particles are only eliminated after the individual fibers have been picked up, a reduced intake of individual fibers is also necessary if the raw material is only slightly contaminated. The absorption of individual fibers in turn depends on the position of the clothings relative to one another and on the design of the flat clothing. In addition, the longitudinal orientation of the fibers is significantly influenced by the distance between the clothings of the card drum and the revolving flat, the so-called carding gap.
  • the CN 208 235 044 U Lid sets with various arrangement of the wire hooks, some in rows of different spacing.
  • the flat clothings should bring about a parallelization of the fibers and at the same time a separation of trash particles and a dissolution of flocks.
  • the requirements of the flat clothing for optimal parallelization of the fibers do not match the requirements for optimal separation of trash particles and the additional task of breaking up flocks.
  • the known flat clothings which in each case have a regular pattern in the arrangement of all the clothing points in common, are a compromise between at least two ideals.
  • the WO 2018/104836 A1 tries to remedy this disadvantage by using different flat sets in adjacent revolving flats.
  • a disadvantage of the proposed solution is that the cover fittings according to the disclosure of WO 2018/104836 A1 the fibers guided past the clothing are deflected to a large extent. Such a strong deflection leads to fiber damage, as a result of which the proportion of short fibers in the card sliver is increased or an increased elimination of short fibers has to take place in the spinning preparation process for high-quality applications.
  • This prior art method of carding has the disadvantage that simultaneous cleaning and longitudinal orientation of the fibers is a compromise for the requirements of both processes. Due to an improvement in the cleaning of the cotton in the blowroom achieved in recent years and an increase in performance in the entire area of cotton processing, the demands on the quality of the carding have steadily increased.
  • the use of the high-performance cards that are available today and the improvements in the blowroom systems mean that today's processes in relation to the dirt separation achieved mean that excessive fiber damage has to be accepted and the load on the revolving flats and specifically on the individual clothing tips also increases .
  • a high dirt separation rate in revolving flats has the disadvantage that this has to be done at the expense of fiber straightening, i.e. many good fibers are included in the clothing and removed from the carding process.
  • the object of the invention is to create a device that allows dirt residues, pieces of trash and neps to be separated out and a large number of short fibers to be produced from a fiber material with a simultaneous high level of fiber straightening without causing damage to the fiber material or a loss of good fibers.
  • a new type of flat clothing for a revolving flat of a card with a working width for processing fibers in a grain direction transverse to the working width, the flat clothing having a foundation which has a length corresponding to the working width and a width seen in the grain direction, and includes a variety of clothing tips.
  • the clothing tips are formed from U-shaped wire hooks pierced through the foundation from a wire with a cross-sectional width of two tips forming legs and a back connecting the two legs with a back length, the legs each having a tip axis.
  • the cross-sectional width of the wire of the wire hooks is measured across the grain direction.
  • the wire hooks are arranged side by side with a distance between the opposing tip axes in rows and the ridges with a ridge axis connecting the tip axes in the direction of the working width, with a row offset in the direction of the working width, through which the clothing tips are not arranged one behind the other in successive rows seen in the grain direction, and a row spacing between two successive rows is provided.
  • Seen in the grain direction at least two consecutive zones are arranged, each zone having at least three rows and the row offset of the first zone differing from the row offset of the second zone.
  • the different arrangement of the clothing points in at least two zones allows the compromise made up to now to be resolved.
  • the clothing tips are arranged differently in the two zones, so that it is possible to provide a flat clothing that is adapted to the requirements for parallelization or dirt and short fiber separation.
  • the fiber bundle dissolving process is also accounted for with good cleanability of the flat clothing by cleaning rollers. Because the row offset, i.e. the distance in the direction of the working width between two clothing points in consecutive rows, differs, it is possible to design a wider or narrower passage for the fibers in the direction of the grain.
  • the row spacing between a row of the second zone and a subsequent further row of the second zone is different from the row spacing between the row of the second zone and the preceding row of the second zone.
  • the change in row spacing from one row to the next in combination with the small row offset results in the number of clothing points per section being uneven in the direction of the grain, which results in increased parallelism.
  • the row offset of the first zone and the row offset of the second zone are greater than the cross-sectional width of the wire.
  • the flat clothing is designed for high machine output with less soiled cotton, mixed wool with MMF (Man Made Fibers) or even just MMF. Due to the larger gaps between the clothing points, large impurities can still be picked up and easy cleaning with a good separation and parallelization effect is achieved. With regard to a specific working width, the clothing tips are far apart, so that there is a large passage between the individual clothing tips compared to a fiber diameter. Only some of the fibers to be processed come into contact with a clothing point, which consequently causes only some of the fibers contained in the fiber material to be straightened.
  • the row offset is changed compared to the first zone, which means that a clearance between the individual clothing points viewed in the direction of the grain is at least different in the second zone compared to the first zone, which is considered across both zones in the direction of the grain a displacement of the passages results and thus leads to a parallelization of the fibers.
  • the row offset from one row to a subsequent row is the same in the first zone. Also in the second zone, the row offset from one row to a subsequent row is the same.
  • the flat clothing is divided into two zones in the grain direction, with no smooth transition between the zones.
  • the row spacing between a row of the second zone and a subsequent further row of the second zone is smaller than the row spacing between the row of the second zone and the preceding row of the second zone.
  • the reduction in the row spacing leads to an increase in the number of clothing points per path in the direction of the grain, which means that the fibers are processed more efficiently.
  • the flat clothing is divided into different zones, with a lower density of clothing tips being provided in a first zone, there is a reduction in the good fibers taken up by the flat clothing for dirt separation.
  • the flat clothings on their way through the main carding zone clog less quickly and thus also result in better efficiency.
  • the effect of the flat clothing is retained over a longer distance along the surface of the card drum.
  • An extension of the first zone in the grain direction is advantageously 30% to 70% of an extension of the second zone. It has been shown that it is advantageous if the second zone has at least 7 rows. With a smaller number of rows, a division into subgroups within the second zones is not possible. It has also been shown that increasing the number of rows in the second zone can increase its effect.
  • two to four rows arranged one behind the other form a subgroup and the row spacing between consecutive rows within a subgroup, viewed in the direction of the grain, increases or decreases, with a subgroup with increasing row spacing being followed by a subgroup with decreasing row spacing or by a subgroup with decreasing row spacing, a subgroup follows with increasing row spacing.
  • This wave-like arrangement of the clothing points results in a further improvement in the effects presented above.
  • a manufacturing advantage results if, as an alternative to the formation of subgroups in the second zone, two to four rows arranged one behind the other form a row group, with the row spacing being the same within a row group.
  • the distance from a tip axis of a first wire prong to the opposite tip axis of a subsequent wire prong of the same row is equal to the back length of the wire prongs. This results in a regular setting of the clothing points.
  • the wire hooks have a back length between the tip axes of less than 3.5 mm.
  • FIG 1 shows a schematic representation of the side view of a known card 1 in the form of a revolving flat card.
  • Fiber tufts fed to a feeding device 2 are taken over by a licker-in 4 as fiber wadding 3 and transferred to a card drum 5 .
  • Lick-in 4 and carding drum 5 are each related to clothing wires, not shown here.
  • the fiber tufts are dissolved on the card drum 5, cleaned and parallelized. This process happens through interaction of carding drum 5 and components arranged around carding drum 5.
  • a revolving flat unit 8 is arranged above the carding drum 5 in the main carding zone, which has individual revolving flats 9 or flat bars.
  • the revolving flats 9 are guided by the revolving flat unit 8 counter to the direction of rotation of the carding drum 5 along part of the circumference of the carding drum 5 .
  • the pre-carding zone 6 and post-carding zone 7 are provided with stationary working elements.
  • the stationary working elements consist of, for example, carding elements, knives and guide or cover elements.
  • the fibers form a fiber web on the card drum 5, which is removed from the doffer roller 10 and formed into a card sliver 12 in a manner known per se in a sliver-forming unit 11 consisting of various rollers and guide elements. This card sliver 12 is then deposited in a transport can by a sliver coiler (not shown).
  • FIG 3 shows a schematic representation of a carding point in the main carding zone with a revolving flat 9 in interaction with the card drum 5.
  • the carding drum 5, which rotates in the direction of the arrow, is only partially shown with the drum clothing 13 located on it.
  • the flat clothing 14 is fastened, for example, with fastening clips 26 to the foot part 25 of the revolving flat 9 , the clothing tips 23 of the flat clothing 14 being directed towards the drum clothing 13 . Between the clothing points 23 of the flat clothing 14 and the cylinder clothing 13, the carding distance A is formed.
  • the carding distance A of today's usual cards is less than 0.2 millimeters.
  • figure 4 shows a schematic representation of a flat fitting 14 to explain the terms.
  • a detail of a foundation 27 with a length F and a width G is shown, through which clothing tips 23 forming wire hooks 28 are pierced.
  • the wire hooks 28 are in the direction of the length F in rows 33 one behind the other arranged, wherein the rows 33 have a row offset K between a first row 33 and a subsequent row.
  • the longitudinal direction corresponds to a working direction of the flat clothings 14 used in a revolving flat, which is transverse to the direction C of the grain.
  • the wire hooks 28 are used at a distance H next to each other.
  • a row spacing L is provided between the individual rows 33 .
  • the wire hooks 28 are formed from a wire with a cross-sectional width b.
  • the U-shaped wire hooks 28 have two legs 29 and a back 30 connecting the legs 29 .
  • the two legs 29 are each formed into a clothing point 23 at their ends opposite the back 30 .
  • the clothing tips 23 are generally formed by a grinding process after the wire hooks 28 have been inserted into the foundation 27 .
  • Legs 29 have a tip axis 31 and ridges 30 have a dorsal axis 32 .
  • a back length E is given by the distance between the tip axes 31 of a wire hook 28 in the direction of the back axis 32 .
  • figure 5 shows a schematic representation of a first embodiment of a flat top 14, the view shown being from the rear side of the flat top 14, so that the backs 30 of the individual wire hooks 28 protruding from the foundation 27 can be seen.
  • a clothing point 23 is formed on the non-visible side of the flat clothing 14 at each end of a spine 30 .
  • Two zones 34 and 35 are shown in the grain direction C over the width G of the flat clothing 14 on the illustrated section of the flat clothing 14 having a length F.
  • a first zone 34 which has an extent M
  • several rows 36 and 37 are arranged one after the other in the direction of the grain C.
  • the rows 36 and 37 have a row spacing L1.
  • the wire hooks 28 arranged side by side in the rows 36, 37 show a row offset K1, the row offset K1 indicating the offset of the clothing tips formed by the wire hooks 28. This is clarified by specifying the row offset K1 between row 37 and the following row in the grain direction C.
  • a second zone 35 which has an extent N, a plurality of rows 38, 39, 40 following one another in the direction C of the grain are arranged.
  • the rows 38 and 39 as well as the rows 39 and 40 have a row spacing L2.
  • the wire hooks 28 arranged side by side in the rows 38, 39, 40 show a row offset K2, the row offset K2 also indicating the offset of the clothing tips formed by the wire hooks 28.
  • the row offset K2 of the second zone N differs from the row offset K1 of the first zone M.
  • the row spacing L2 between consecutive rows 38, 39, 40 in the grain direction C decreases in the grain direction C in the exemplary embodiment shown.
  • figure 6 shows a schematic representation of a further embodiment of a flat fitting 14 from the same perspective as FIG figure 5 .
  • Two zones 34 and 35 are also shown in the grain direction C over the width G of the flat clothing 14 on the illustrated section of the flat clothing 14 having a length F.
  • a first zone 34 which has an extent M
  • several rows 36 and 37 are arranged one after the other in the direction of the grain C.
  • the rows 36 and 37 have a row spacing L1.
  • the wire hooks 28 arranged side by side in the rows 36, 37 show a row offset K1, the row offset K1 indicating the offset of the clothing tips formed by the wire hooks 28. This is illustrated by specifying the row offset K1 between the row 37 and the row following in the direction of the grain C.
  • a second zone 35 which has an extent N
  • several rows 38, 39, 40 are arranged one after the other in the direction of the grain C, with the rows 38, 39 and 40 forming a subgroup 42.
  • the rows 38 and 39 have a row spacing L2 and rows 39 and 40 have a row spacing L3.
  • the following three rows form a second subgroup 43, with the row spacing L2 or L3 seen in the grain direction C in the second subgroup 43 opposite the course of which is arranged in the first subgroup 42 .
  • a subgroup 43 with an increasing row spacing L2, L3 within the subgroup 43 follows a preceding subgroup 42 with a decreasing row spacing L2, L3. In the following subgroup, this progression of the row spacing is reversed again.
  • the wire hooks 28 arranged side by side in the rows 38, 39, 40 show a row offset K2, the row offset K2 also indicating the offset of the clothing tips formed by the wire hooks 28.
  • the row offset K2 of the second zone N differs from the row offset K1 of the first zone M.
  • figure 7 shows a schematic representation of a view X after FIG figure 6 .
  • the figure 7 shows a detail of the flat top 14 having a length F.
  • the wire hooks 28 pierced through the foundation 27 can be seen on the upper side of the flat top 14 with their backs 30 and on the lower side of the flat top 14 with their fitting tips 23 forming legs 29. It can be clearly seen that a clothing point spacing D over the length F of the flat clothing 14 is not uniform. This results from the different row offset K through the different zones.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP20152345.3A 2019-02-08 2020-01-17 Deckelgarnitur für einen wanderdeckel einer karde Active EP3693498B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00155/19A CH715824A1 (de) 2019-02-08 2019-02-08 Deckelgarnitur für einen Wanderdeckel einer Karde.

Publications (2)

Publication Number Publication Date
EP3693498A1 EP3693498A1 (de) 2020-08-12
EP3693498B1 true EP3693498B1 (de) 2023-03-22

Family

ID=69177026

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20152345.3A Active EP3693498B1 (de) 2019-02-08 2020-01-17 Deckelgarnitur für einen wanderdeckel einer karde

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US (1) US20200255983A1 (zh)
EP (1) EP3693498B1 (zh)
CN (1) CN111549402B (zh)
CH (1) CH715824A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH720658A1 (de) * 2021-10-23 2024-09-01 The Indian Card Clothing Company Ltd Flacher deckel für eine karde

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1176435A (fr) * 1957-07-11 1959-04-10 Joseph Deiss Ets Chapeau de carde
JPS51127224A (en) * 1975-04-24 1976-11-05 Kanai Hiroyuki Top needle cloth
JPS5264822U (zh) * 1975-10-31 1977-05-13
CH644902A5 (de) * 1980-05-29 1984-08-31 Graf & Co Ag Deckelgarnitur fuer karde.
DE3318580A1 (de) * 1983-05-20 1984-11-22 Aktiebolaget Kardbeslag, Norrköping Kratzenbeschlag
CH661531A5 (de) * 1983-09-29 1987-07-31 Graf & Co Ag Deckelgarnitur fuer krempelmaschinen.
DE3924890A1 (de) * 1989-07-27 1991-02-07 Wolters Peter Fa Deckelgarnitur fuer eine karde
DE19708261B4 (de) * 1997-02-28 2010-08-12 TRüTZSCHLER GMBH & CO. KG Vorrichtung an einer Karde mit einer Speisewalze und mindestens einem Vorreißer
AUPP681098A0 (en) * 1998-10-30 1998-11-19 Commonwealth Scientific And Industrial Research Organisation Card wire, especially for doffers and workers
CN205205327U (zh) * 2015-05-11 2016-05-04 孙鹏子 不等齿密梳理针布
CH711367A1 (de) * 2015-07-31 2017-01-31 Rieter Ag Maschf Lagerung eines Flexibelbogens in einer Wanderdeckelkarde.
WO2018104836A1 (en) 2016-12-05 2018-06-14 Lakshmi Card Clothing Mfg Co Pvt Ltd Card flat for a carding machine
CN208235044U (zh) 2018-03-27 2018-12-14 光山白鲨针布有限公司 一种高支纱用活动盖板针布
CN109023605B (zh) * 2018-08-21 2021-07-02 金轮针布(江苏)有限公司 梳棉机用盖板针布条

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Publication number Publication date
CN111549402A (zh) 2020-08-18
CN111549402B (zh) 2023-11-14
CH715824A1 (de) 2020-08-14
EP3693498A1 (de) 2020-08-12
US20200255983A1 (en) 2020-08-13

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