EP1904672A1 - Chapeaux marchants pour une carde - Google Patents

Chapeaux marchants pour une carde

Info

Publication number
EP1904672A1
EP1904672A1 EP06761224A EP06761224A EP1904672A1 EP 1904672 A1 EP1904672 A1 EP 1904672A1 EP 06761224 A EP06761224 A EP 06761224A EP 06761224 A EP06761224 A EP 06761224A EP 1904672 A1 EP1904672 A1 EP 1904672A1
Authority
EP
European Patent Office
Prior art keywords
width
lids
clothing
card
strip
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.)
Withdrawn
Application number
EP06761224A
Other languages
German (de)
English (en)
Inventor
Götz Theodor Gresser
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
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 EP1904672A1 publication Critical patent/EP1904672A1/fr
Withdrawn legal-status Critical Current

Links

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

Definitions

  • the present invention relates to a lid for a revolving flat card and a card with a revolving system.
  • the cotton In the blowroom and carding the cotton is prepared for further processing into a yarn.
  • the cotton flakes are taken from bales, cleaned and pre-dissolved.
  • the card as the final cleaning step is the heart.
  • the cotton is not only cleaned but dissolved in individual fibers and put together to form a ribbon. Since the process steps after the carding machine no longer contain any cleaning steps, the quality of the tape is of great importance for the quality of the yarn spun therefrom. Especially dirt particles and nits, which should have been eliminated at the latest on the card, can be recognized directly in the yarn as contamination or thick spots.
  • the flakes are fed on the card in the form of a regular cotton wool.
  • the cotton wool is pre-cleaned by the licker-in (formerly called Briseur). This consists of 1 to 3 rollers with relatively coarse sets that further dissolve the flakes and pass it on to the drum.
  • the modern high-performance carding unit also contains cleaning elements such as knives in this area.
  • the main task of the drum is the actual carding, the removal of dust and nits as well as the parallelization of the fibers.
  • the drum can be divided into three carding zones: the pre-carding and the post-carding zone, which usually consists of an array of stationary cleaning elements, such as hard covers with fittings, knives and suction elements, and the main carding zone.
  • the main carding zone may consist of hard covers, a traveling deck system is the preferred system.
  • the revolving flat system consists of 79 to 112 lids, which are combined by a chain or a belt to form a revolving endless belt. There are 20 to 50 lids constantly in working position. In working
  • the lids are then positioned when they are arranged with their clothing side opposite the drum assembly.
  • the working width of the drum has been increased from the usual value in the range of 1 m to 1.5 m.
  • the diameter of the drum is reduced from the usual 1.3 m to about 0.814 m.
  • a card with a reduced drum diameter is preferably driven at a relatively high speed to achieve a higher peripheral speed. Due to the modified geometry and the correspondingly altered processing parameters, the card can process more than 200 kg / h of cotton today.
  • the changed geometry of the drum also has an effect on the functionality of the combination of lid and drum.
  • the present invention is concerned with developments in this regard.
  • a first theory is based on the assumption that the entire clothing surface in the working position is decisive for optimum carding quality. This would speak for a new cover with a set to the edge (see Rieter EP-B-887445).
  • a second theory is based on the assumption that the number of "carding lines" is decisive for the carding quality, the lids are always ground straight, and the radius of the drum automatically creates a narrowest point between the lid and the drum when these elements work together
  • the position of this narrowest point relative to the respective lid depends on the one hand on the manner in which the clothing tips of the lid have been ground and on the other hand on the way in which the lid itself is guided in the card
  • the carding forces before and after this point are smaller or less due to an increase in the distance between the cover and the drum, which is a positive one Has effect on fiber damage.
  • the invention is not limited to or dependent on a theory of cooperation of the working elements within the card. However, the explanation of theoretical considerations can at best help to understand the inventive steps. The following explanation is offered in this sense.
  • the restriction of the trim width allows an optimal exchange of the fibers between the drum and the flat clothings, whereby a large distance between the lid and drum set is avoided.
  • the garnish-free gaps between the trimmings create so-called relaxation zones that counteract the overuse of the fibers.
  • the fibers can spring back under the influence of their own elasticity, whereby they are not permanently overstretched, as would be the case with a continuous clothing surface. As a result, the fiber damage can be minimized.
  • the width of the garnish gap is preferably substantially equal to or greater than the Garnitur Museum.
  • the width of the garneless gap between 10 and 16 mm.
  • “Substantially equal” here means, for example, that the width of a gap is chosen to be less than or greater than the width of the subsequent clothing strips, however, the gap without garnish must not be too large, in a zone of relaxation between the sets
  • the width of the garneless gap between the trimmings may not be more than 1.5 times the width of the trimmings.
  • the ratio of the flat bar width to the flat bar height without set is ⁇ 0.4, the flat bar width corresponding approximately to the width of once set and 1 garneless gap.
  • the actual value is slightly smaller because the lids are not tightly arranged against each other, but there are small gaps between the lids.
  • Figure 1 Schematic side view of a card.
  • FIG. 1 Schematic representation end parts of three revolving lid
  • FIG. 3 Schematic view in cross section of a clothing strip for
  • Figure 6 Enlarged view of the profile of Figure 4 to illustrate certain measures
  • Figure 7 simplified representation of four flat bars when entering the working position
  • Figure 8 Perspective representation of an end head for use with a profile according to Figure 4
  • Figure 9 Schematic representation in cross section of the slider of a
  • FIG. 10 Schematic representation of a belt for use with an end head according to FIGS. 8 and 9
  • FIG 11 Schematic representation of an alternative embodiment of the foot part of a supporting body, which can also be used in a lid according to the invention.
  • FIG. 1 shows a revolving flat card, for example the Rieter card C60 with a working width of 1.5 m. Fiber flakes are transported through transport channels through the various cleaning process steps (not shown) and finally the hopper (16) of the card.
  • the shaft (16) in Figure 1 is designed as a so-called "cleaner shaft” with a cleaning module between the shaft top and the shaft base, but this is not essential to the present invention, and instead of a cleaner shaft, a normal hopper may also be provided Schacht then passes the fiber flakes on to the card as cotton wool, feeding it to a known feeding device, which feeds the cotton into the carding machine at a predetermined speed. The feeding device feeds the fiber flakes to the lickerins (3) The lickerins open the fiber flakes and remove them The last licker-in roller transfers the fibers to the card pulley 1.
  • the card pulley cooperates with the lids (7), thereby further parallelizing the fibers, and the lids are cleaned by a lid cleaning (14) and eventually sanded with a grinder have performed several rounds on the card drum, they are removed from the doffer roller (4) of the card drum, fed to the removal area (5) and finally deposited as a card sliver in a can can in a pot (not shown).
  • the lid area together with the drum, forms the main carding zone and has, as a function, the dissolution of the flakes into individual fibers, removal of impurities. and dust, elimination of very short fibers, the dissolution of nits and the parallelization of the fibers.
  • This area can be defined with an angle ⁇ . This area extends from the point where the first lid is placed in working position to the point where the last lid leaves the working position.
  • the carding drum has a diameter D and a working width A (not shown in FIG. 1). With these parameters, the total carding surface, defined by the area of the entire cover in working position, can be calculated.
  • the area of the entire lid is composed of the surface of the garnish and the garnish-free gaps.
  • the covers are moved with an endless belt or a chain over pulleys (6) with a drive on the drum surface, usually against the direction of rotation of the drum.
  • the underside of the lid is provided with a set, for example with a sawtooth or with flexible sets in the form of hooks, whereby alternative forms of trimmings come into question.
  • the drum also has a set that works with the lid. Between the drum and the flat set is a gap called the carding nip.
  • the lids run over two flexible bows, which are arranged on each side of the drum.
  • the flexible sheet can be provided with means (not shown) for adjusting the sheets, so that an accurate adjustment of the carding gap can be made.
  • This carding nip is normally selected over almost the entire main carding zone so that the lids are set at a constant distance from the drum. However, the gap can also be opened - the carding gap is larger - or closing - the carding gap is smaller - to be set. To control the adjustment, slits may be provided in the side of the arches, whereby the distance between the trimmings can be measured with gauges.
  • the size of the carding nip is, for example, between 0.10 to 0.30 mm for cotton or to 0.40 mm for chemical fibers in the case of a revolving flat card.
  • FIG. 2 shows again schematically some cover in working position.
  • the clothing width G of the clothing (15) is measured from batch to batch.
  • ne- Ben crochet sets also rigid, semi-rigid or shege leopardgarnitur be used.
  • any other forms of trimmings can be applied, provided that the invention relates to the relationship between clothing and garneless gap.
  • the garnish gap L runs from the end of the set to the beginning of the next set.
  • each cover (7) has its own set, this usually consists of a clothing strip, but also several strips can be mounted on a lid.
  • the clothing can be ground at an angle or attached at an angle to the flat bar, so that the carding line can be laid in the flat bar in the direction of travel, forward or backward.
  • the lid width B runs from lid edge to cover edge on the flat bar surface to which the clothing is attached. However, this width is approximately equal to the sum of a trim width and a width of a garnish gap.
  • the working length A of the clothing is equal to the working width of the drum.
  • the lid height H is the height of the lid without clothing.
  • the covers of FIG. 2 are arranged in the ratio of cover width B to cover height H smaller than 0.4.
  • a card with a drum diameter D of 0.8 m and a working width A of 1.5 m has a revolving flat lid device, wherein the lids are in working position over an angle ⁇ of 120 °.
  • the total carding surface - "surface garnished by the lid garnish + total area of garnish-free gaps" - is then approximately 1.26 m 2.
  • the entire carding surface is preferably at least 1.2 m 2 and is, for example, in the range from 1.2 m 2 to 1.5 m 2 Is used by at least 30 lids in the working position and a substantially equal width of garneless gaps and garment As a result, both the width of the trim and the width of the garneless gap are between 13 and 15 mm.
  • the number of lids in the working position is preferably greater than 30, so that enough Kardierlinien are available. Since the moving lids move, in practice not always the same number of sets and garneless gaps relative to the drum are in working position. For the explanation of the example, assume the position in which whole lids are engaged, and thus the same number of trimmings and gaps are in working position.
  • the entire carding area should be at least 1.20 m 2 .
  • the lid geometry according to the invention is applied at a smaller diameter of the drum, in particular at a radius of 390 mm to 600 mm, preferably at a radius of 400 mm to 500 mm.
  • the working width of the drum can already be 1 m, but is preferably greater than 1.2 m, in particular 1.5 m.
  • FIG. 3 shows a suitable clothing strip 30.
  • the elements of the GamiturstMakes 30 are well known from the prior art (see Klein, Handbook of textile production, "The short staple spinning volume 2: Blow and Karderie” pages 47 to 49 and page 52 - hereinafter "Klein” - and HB Wolf, "Cotton Mill - Technology and Machines” page 52. They comprise: a fabric strip 32 having a predetermined width SB and a length (not visible in Figure 3) corresponding to the working width A ( Figure 2); - left and right each a deformable clip (by Wolf “clamping rail” called) 34 and 36, and
  • This garnished surface has a width G (see FIG. 2) and a length A.
  • Each clip 34, 36 has prongs 40 (see also Klein, page 48, Fig. 24 a-c), which pierce the fabric strip 32 to connect the two elements together.
  • the prongs 40 are formed on a narrow plate-shaped clip part ("border") 42 which covers a respective edge region of the fabric strip 32.
  • the width of this edge region is designated RB in Figure 3.
  • the main part 44 of each clip forms an elongated deformable one A plate which can form a clamping connection between the clothing strip and a rod-shaped clothing carrier by means of curling or rolling in.
  • the main part 44 of the clip normally has a thickness (not specifically indicated) of approximately 0.5 mm between the teeth 40 (borders 42 ) leaves free a useful part of the cloth strip 32, which can be utilized for picking up hooks
  • the clothing supplier forms an elongated garnished surface with a width G (see also FIG. 2) between the outer tips of the wire hooks.
  • the width RB is usually between 2 and 5 mm. Most of the time, a small gap (not specifically designated) of up to 0.5 mm is left between the edge of the fabric strip and the adjacent clip wall.
  • a clothing strip according to this invention has the following mass:
  • Width SB of the fabric strip 20 to 28 mm - preferably 22 to 26 mm.
  • Width RB of the overlapped edge area 2 to 5 mm - Preferably 3 to 4 mm.
  • Width NB of usable area 10 to 20 mm
  • Width G of the garnished surface 10 to 20 mm
  • trim strip 30 The structural details of the trim strip 30 have generally been chosen in accordance with traditional usage. However, newer solutions are known which deviate from this traditional use. For example, it has been proposed in EP-A-887445 and also in DE-A-10229172 to fasten the fabric strip to a "sole" or a holding device, in order subsequently to integrate the sole or the holding device in a flat bar. While U-20320538 goes further, it has been proposed to attach the flat cover to the flat bar by means of at least one magnetic element, but the present invention may also be combined with such newer approaches.
  • FIG. 4 shows, in cross-section, a hollow profile 50, which, for. B. by extrusion, preferably from a light metal, can be formed.
  • the design of this profile 50 which has been newly selected specifically for use in an arrangement according to this invention, will be explained in more detail below with reference to FIG. From a cut longitudinal section of this hollow profile, a support body for a clothing strip according to the figure 3 can be formed.
  • a hollow profile 52 of prior art type eg, according to EP-B-753610 or EP-A-1270777
  • the hollow profile 52 is designed to accommodate as a support body for a clothing a clothing strip conventional type (see Klein, page 48, left column).
  • the hollow profile 52 therefore has, in cross-section, a pronounced foot part 54 which is provided with an elongate receiving surface 56.
  • the width (not specifically indicated) of the receiving surface 56 is z. B. 34 mm to a clothing strip (not shown) with a corresponding Brei- to be able to record.
  • the foot part 56 is formed on a hollow body which tapers away from the foot part (in the illustration according to FIG. 5, upwards) up to a free end remote from the foot part, but which otherwise has no special design features externally.
  • the hollow profile 50 comprises three parts which can be clearly distinguished from one another, namely (see FIG. 6).
  • a foot part 60 and an intermediate or connecting part 62 a foot part 60 and an intermediate or connecting part 62.
  • the foot part 60 is also provided with a surface 64, which is to serve as a receiving surface for a clothing strip, but this time the narrower strip 30 according to the figure 3.
  • the receiving surface 64 has a constant width FB over the length.
  • the foot part 60 has two projections 66 each with a surface 68 directed in the direction of the head part 58.
  • This surface 68 serves in a known manner in a flat rod as a support surface for the curled portion of a clip 34 and 36 (Fig. 3), so as to connect by means of a clamping connection the associated clothing strip 30 on the support body.
  • the head portion 58 of the hollow profile 50 has a maximum width MB, which is located at a point 72 which is remote from the free end 74.
  • the point 72 is connected by a short connector (not specifically designated) with the intermediate part 62.
  • Side surfaces 76, 78 extend from location 72 to the aforementioned free end 74. The configuration of these side surfaces can be seen in Figure 7, at least when this figure is used in conjunction with the prior art (e.g., EP -A-567747, Fig. 2).
  • the flat bars are in the traveling lid assembly of timing belt (not shown in Fig. 7) in a predetermined driven forward. If the flat bars run into the working position or run out of the working position, they are deflected on deflecting rollers (not shown in FIG.
  • Figure 7 shows that the side surfaces 76, 78 are designed such that when entering or leaving the side surfaces 76, 78 of adjacent support body are arranged mutually parallel and a predetermined distance a substantially comply.
  • the distance a is z. B. 1 to a maximum of 4 (preferably 2 to 3) mm.
  • a flat bar according to this invention expediently has a carrier body with the following mass:
  • Width FB of 64 receiving surface for the fabric strip 20 to 26 mm
  • Width ZB of the intermediate section 62 10 to 15 mm
  • Width MB of the head portion 58 at the point 72 18 to 22 mm - preferably 19 to 21mm.
  • the wall thickness of the profile which is determined for the most part by the manufacturing process, can be selected slightly larger in the region of the intermediate section 62, in order to favor the attachment of an end head part by pressing in wall parts (see EP-B-627507, Fig. 8 bis 11).
  • FIG. 6 shows with dashed lines certain modifications which can be realized in the cross section of the hollow profile.
  • the "stalk-shaped" intermediate portion 62 could have a curvature that could converge (e.g., as indicated by dashed lines in Figure 7) with the head end 72.
  • the side surfaces 76, 78 could practically converge, which would increase the height H of the profile and increase the rigidity of the support body (resistance to deflection), but the solution with a bent end face 74 will be the Preference is given to the fact that the surfaces 74 of the flat bars in each deflection region ( Figure 7) practically form a "channel" which can be flushed out by means of suction or blowing air source (not shown) .
  • the profile could also be provided with ribs (not shown). to increase the resistance to deflection.
  • FIG. 8 shows an end head 71 with the fastening part 70 already mentioned and with a sliding body 80 (see also FIG. 9). Since end heads of this type have already been described in principle in EP-B-753610, reference is made here only to the latter description, without repeating the details.
  • the end head 71 differs from the end heads described in EP-B-753610 mainly in that the width GB (Fig. 9) of the slider 80 of the foot width FB (Fig. 6) has been adjusted. Width GB is thus about the same size to choose width FB.
  • the sliding body 80 cooperates with elements on an elastically deformable toothed belt to form a
  • the slider 80 is provided with a receiving opening 82 for beam-shaped elastic members 84 (FIG. 10) of the belt 86.
  • the design of elements 84 has been described in EP-A-1270777 (in particular in connection with Figure 29).
  • the sliding body 80 and the elements 84 assigned to it form a "locked" snap connection according to EP-A-1270777, wherein the side surfaces of the receiving opening 82 form a "clamp” for the elements 84.
  • the width GB of the body 80 had to be reduced, it is also necessary to have the corresponding width (not specifically designated) of the opening 82 and the distance SW (Fig. 10 - called “span” in EP-B-753610) over the previous ones
  • the SW range can now range from 10 mm to 15 mm, the other design features of the snap connection according to EP-B-753610 can be retained.
  • FIG. 11 shows an alternative embodiment of the foot part 100 of a clothing support body 102, e.g. B. according to EP-B-567747.
  • This foot part 100 is provided with openings 104, 106 which receive pins (not shown), these pins serving as sliding elements of the alternative embodiment.
  • a saddle-type connecting element (not shown) is fastened to the supporting body 102, this last-mentioned connecting element serving to connect the supporting body to the belt (not shown).
  • the garniture receiving surface 164 of the support body may have a width according to the present invention and surfaces 168 may be provided which serve to attach a garment strip according to the present invention to the support body.
  • the foot part 100 and the belt (not shown) or the aforementioned connecting element can be designed such that the pressing force acts mainly on the trailing sliding member.

Landscapes

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

Abstract

Carde pourvue d'un dispositif à chapeaux marchants et dispositif à chapeaux marchants pour une carde, ledit dispositif comportant plusieurs chapeaux dotés chacun d'une garniture, l'interstice exempt de garniture situé entre la garniture des chapeaux étant de même dimension ou plus large que la largeur de la garniture.
EP06761224A 2005-07-21 2006-07-18 Chapeaux marchants pour une carde Withdrawn EP1904672A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510034799 DE102005034799A1 (de) 2005-07-21 2005-07-21 Wanderdeckel für eine Karde
PCT/CH2006/000373 WO2007009283A1 (fr) 2005-07-21 2006-07-18 Chapeaux marchants pour une carde

Publications (1)

Publication Number Publication Date
EP1904672A1 true EP1904672A1 (fr) 2008-04-02

Family

ID=36930384

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06761224A Withdrawn EP1904672A1 (fr) 2005-07-21 2006-07-18 Chapeaux marchants pour une carde

Country Status (4)

Country Link
EP (1) EP1904672A1 (fr)
CN (1) CN101268219A (fr)
DE (1) DE102005034799A1 (fr)
WO (1) WO2007009283A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012002957A1 (de) * 2012-02-16 2013-08-22 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Karde oder Krempel, bei der mindestens ein Arbeits- und/oder Abdeckelement angeordnet ist

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2816900A1 (de) * 1978-04-19 1979-10-25 Wolters Peter Fa Karde mit wanderndem deckel
EP0866153B2 (fr) * 1997-02-24 2004-11-24 Maschinenfabrik Rieter Ag Machine de cardage à haute rendement
DE59806150D1 (de) * 1997-06-26 2002-12-12 Rieter Ag Maschf Deckelgarnitur.
DE10203853C5 (de) * 2002-01-31 2010-10-14 Graf + Cie Ag Deckelgarnitur für einen Kardendeckel
DE10323359A1 (de) * 2002-05-22 2003-12-04 Rieter Ag Maschf Mehrteiliger Garniturstreifen-Clip

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007009283A1 *

Also Published As

Publication number Publication date
DE102005034799A1 (de) 2007-01-25
WO2007009283A1 (fr) 2007-01-25
CN101268219A (zh) 2008-09-17

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