EP4227456A1 - Support de garniture pour un élément de cardage d'une machine de filature ; élément de cardage ainsi que machine de filature - Google Patents

Support de garniture pour un élément de cardage d'une machine de filature ; élément de cardage ainsi que machine de filature Download PDF

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Publication number
EP4227456A1
EP4227456A1 EP23150090.1A EP23150090A EP4227456A1 EP 4227456 A1 EP4227456 A1 EP 4227456A1 EP 23150090 A EP23150090 A EP 23150090A EP 4227456 A1 EP4227456 A1 EP 4227456A1
Authority
EP
European Patent Office
Prior art keywords
carrier plate
toothed segments
carding element
clothing strip
clothing
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.)
Pending
Application number
EP23150090.1A
Other languages
German (de)
English (en)
Inventor
Dietmar Flock
Alexander Hohn
Thomas Schmitz
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.)
Truetzschler Group SE
Original Assignee
Truetzschler Group SE
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 Truetzschler Group SE filed Critical Truetzschler Group SE
Publication of EP4227456A1 publication Critical patent/EP4227456A1/fr
Pending 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
    • D01G15/88—Card clothing; Manufacture thereof not otherwise provided for formed from metal sheets or strips
    • 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
    • D01G15/92—Attaching card clothing to carding elements

Definitions

  • the invention relates to a clothing strip for a carding element of a spinning machine, such as a card. Furthermore, the invention relates to a carding element of such a spinning machine, such as a card, comprising such a clothing strip and a spinning machine with such a carding element.
  • the clothing includes clothing carriers - also called clothing strips - made of elastic, multi-layer fabric layers and hooks embedded in them, also called clothing tips or teeth, which are bent from round or oval wire and equipped with a knee (a bend) to bend under load and return to the original position when relieved.
  • the clothing strips can be designed as a continuous narrow or wide band.
  • the teeth are pierced and anchored in the clothing strips.
  • the individual tooth segments stacked one behind the other are materially bonded, for example by soldering or welding, in the area of their tooth base in order to be combined into packages.
  • sloping slots are arranged at the two axial ends of the individual toothed segments. Clamps can engage in these slots. These clamps connect the materially bonded packages of toothed segments to the flat bar, so that the tooth base of the toothed segments rests directly on the flat bar.
  • the problem with soldering or welding the toothed segments into packages is the distortion that results from the heat input: Individual toothed segments can be distorted in relation to their neighbors, which in turn means that the teeth on the tooth tip or the soldering or welding process cannot be ground down. Welds at the base of the tooth to guarantee an exact fit on the flat bar is necessary.
  • a clothing strip for a carding element of a spinning machine such as a card, such a carding element and such a spinning machine, which are improved compared to the prior art and in particular involve comparatively lower production complexity and costs.
  • the carding element can be designed as a fixed carding element or as a flat bar.
  • a clothing strip for a carding element of a spinning machine such as a card, such a carding element and such a spinning machine according to the independent claims.
  • Preferred embodiments of the invention are specified in the dependent claims, which can optionally be combined with one another.
  • a clothing strip according to the invention for a carding element of a spinning machine such as a card, comprises a carrier plate and a large number of toothed segments, each with a tooth tip that has a plurality of teeth and a tooth base opposite the tooth tip, the toothed segments being arranged one behind the other in the longitudinal extent of the carrier plate , where they are each supported with the tooth base on the carrier plate and the toothed segments are held by means of a positive connection on the carrier plate.
  • toothed segments are arranged one behind the other in the longitudinal extent of the carrier plate, this means that they are arranged parallel to one another.
  • Parallel to one another means that the longitudinal axes of the respective toothed segments arranged one behind the other run parallel to one another.
  • Toothed segments arranged in the longitudinal extension of the carrier plate on the carrier plate that the longitudinal axes of the toothed segments are perpendicular to the longitudinal axis of the carrier plate.
  • the form-fitting connection provides that the toothed segments and the carrier plate mesh directly or indirectly via a further connection partner, such as a clamp.
  • a further connection partner such as a clamp.
  • the carrier plate and the toothed segments cannot become detached from one another even without power transmission or when power transmission is interrupted.
  • one connection partner is in the way of the other.
  • the support plate and the toothed segments can preferably form the form-fitting connection.
  • no other connection partner such as a clamp, is required. This reduces the number of parts, the manufacturing and assembly costs.
  • the toothed segments can be strip-shaped and preferably lined up loosely. Loose means that they are free from a connection, e.g. a material connection with each other.
  • a connection e.g. a material connection with each other.
  • the mutually loose, non-connected toothed segments can be combined into a package and are secured against falling out of the carrier plate. The latter contributes to the fact that the toothed segments come to lie in one plane and therefore do not have to be additionally ground down after the positive connection with the carrier plate has been made.
  • the support plate can preferably completely surround the tooth root of each toothed segment. In this way, each tooth base has a sufficiently large contact surface on the carrier plate.
  • the positive connection can be formed by at least one axial end of the toothed segments and a corresponding edge area of the carrier plate. This can be done, for example, by the edge area of the carrier plate embracing the at least one axial end of the toothed segments, in particular by bending the edge area of the carrier plate. In other words, it is the longitudinal edges of the support plate that form the positive connection with the at least one axial end of all the toothed segments, ie, they grip all the toothed segments at their at least one axial end in a form-fitting manner.
  • the support plate can be C-shaped in cross section, comprising a long leg on which the tooth base of each individual toothed segment rests and on both sides short legs adjoining the long leg, each of which encompasses the two axial ends of the toothed segments in order to produce the form-fitting connection.
  • the short legs are then formed by the edge area of the longitudinal edges of the support plate.
  • the two axial ends of the toothed segments can then be beveled in such a way that they form a dovetail connection together with the support plate surrounding them. In this way, an inexpensive and structurally simple form-fitting connection can be produced between the or all toothed segments and the carrier plate.
  • the toothed segments are pressed in the direction of the long leg by the short leg of the C-shaped cross-section.
  • the toothed segments can have a recess in the area of the two axial ends, such as a slot for receiving an edge area of the carrier plate.
  • a form-fitting connection between the carrier plate and the toothed segments can also be realized in this way.
  • the toothed segments can be made from sheet metal, preferably from corrosion-protected material, and preferably by cutting, such as stamping or laser cutting.
  • the carrier plate can be made from a metal sheet, preferably from a corrosion-protected, ferromagnetic, electrically conductive material such as tinplate.
  • the ferromagnetic property allows the carrier sheet to be attracted by a magnet and held in the flat bar.
  • the electrically conductive property causes a short-circuit current to be detected in order to detect a collision between the clothing strip and, for example, a clothing on a drum of the card. In this way, a collision between the two can be reliably prevented if they come closer as a result of thermal expansion occurring during operation of the card.
  • the invention also relates to a carding element of a spinning machine, such as a card, comprising a clothing strip according to the invention.
  • the clothing strip can be accommodated in a recess of the carding element.
  • the carding element can be designed as a fixed carding element or flat bar.
  • the recess can have a magnet in order to attract the clothing strip to the magnet via the carrier plate and to hold it therein.
  • the carding element can also have a groove in the area of the recess, into which a complementary tongue of the carrier plate engages, the tongue being integral with the carrier plate, in particular through folding is formed. In this way, a carding element can be specified in which the clothing according to the invention can be exchanged with little effort.
  • the invention relates to a spinning machine, such as a card, comprising a carding element according to the invention.
  • FIG. 1 shows a highly schematic and therefore not to scale side view of a spinning machine designed as a card, with feed roller 1, feed table 2, licker-in 3a, 3b, 3c, drum 4, doffer 5, wiper roller 6, squeeze rollers 7, 8, web guide element 9, web funnel 10, draw-off rollers 11, 12, revolving flats 13 with flat deflection rollers 13a, 13b and flat rods 14, can 18 and can coiler 19.
  • the drum 4 interacts with stationary carding elements, suction elements and separating knives which are not designated further.
  • the directions of rotation of the rollers are shown with curved arrows.
  • the center point (longitudinal axis) of the drum 4 is denoted by M.
  • 4a indicates the drum clothing and 4b indicates the direction of rotation of the drum 4.
  • the arrow A indicates the working direction.
  • Arrow B designates the running direction of the flat bars 14 in the carding position
  • arrow C designates the return transport of the flat bars 14.
  • the flat rods 14 each have a flat head at their two ends. Supporting bodies 15 are attached to the cover head. On the lower surface of the support body 15, the flat top 16 is attached. The top circle of the narrowest point of the individual flat clothings 16 is denoted by 21 .
  • the drum 4 has at its periphery the drum clothing 4a, z. B. saw tooth set on. At 22, the top circle is the Drum set 4a called.
  • the distance between the peak circle 21 and the peak circle 22 is denoted by a and is z. 0.20mm.
  • the distance between the convex outer surface 20a and the apex circle 22 is denoted by b.
  • the radius of the convex outer surface 20a is denoted by r1 and the radius of the apex circle 22 is denoted by r2.
  • the radii r1 and r2 intersect at the center M (see 1 ) of the drum 4.
  • FIG 3a a side view of an embodiment of a clothing strip 23 is shown, which as a flat clothing 16 of a flat bar in the Figures 1 and 2 could find application.
  • a clothing strip 23 is made from a plurality of toothed segments 24 lined up one behind the other.
  • the toothed segments 24 could be made in strip form, that is to say from sheet metal, for example by cutting, such as stamping or lasering.
  • Each toothed segment 24 includes a tooth head 24.2 and a tooth base 24.1.
  • the tooth heads 24.2 of the toothed segments 24 include teeth 24.3 and are directed against the direction of rotation of the spool, not shown, ie against the fibers to be combed.
  • the toothed segments 24 are arranged in such a way that the teeth 24.3 of adjacent, ie consecutive, toothed segments are offset from one another, here along their longitudinal axis. The offset of the teeth 24.3 can be repeated over the entire length of the clothing strip 24 or flat bar 14.
  • Such a shown clothing strip 23 thus initially comprises a multiplicity of toothed segments 24 loosely lined up next to one another.
  • the lined-up toothed segments 24 are the best Figure 3b can be seen, which is a cross section through the subject of Figure 3a shows.
  • toothed segments 24 can be inserted more easily into the flat bar 14 and do not fall out of it, they are held together by a carrier plate 25, that is to say held together.
  • the toothed segments 24 are each supported with the tooth base 24.1 on the carrier plate 25.
  • the carrier plate 25 and the toothed segments 24 can form the positive connection: the positive connection is formed here by both axial ends of the toothed segments 24 and a corresponding edge area of the carrier plate 25 .
  • the support plate is C-shaped in cross section. It comprises a long leg 25.1, on which the tooth base 24.1 of each toothed segment 24 rests and on both sides to the long leg 25.1 subsequent short legs 25.2, each of which encompasses the two axial ends of (here: all) toothed segments 24 in order to produce the form-fitting connection.
  • the two axial ends of (all) the toothed segments 24 are beveled in the present case, in such a way that they form a dovetail connection together with the support plate surrounding them.
  • the item off Figures 3a and 3b can be produced in that the plurality of toothed segments 24 lined up one behind the other is placed on an initially U-shaped or C-shaped carrier plate, comprising the long leg 25.1 and the two short legs 25.2, which, however, are initially perpendicular to the long leg 25.1 .
  • the U-shaped or C-shaped support plate is designed as a cassette into which the toothed segments 24 are inserted or pushed. This is done in such a way that each tooth root 24.1 of the corresponding toothed segment 24 is placed on the long leg 25.1.
  • a spring 26 can be arranged here on one side, which not only makes it easier to mount the clothing strip 23 in the flat bar 14, but also improves the magnetic connection, since the spring 26 prevents it from suddenly tipping out of the flat bar 14 .
  • Another advantage of the spring 26 is the error-free assembly of the fittings, thereby preventing misalignment of the teeth.
  • Figure 4a is another embodiment, as a modification of the subject of Figure 3a shown. It can be seen that here on one side, that is to say on an axial end of the clothing strip 23, a spring 26 is provided which is produced here by folding from the carrier plate 25, preferably from the short leg 25.2 itself.
  • the flat bar 14 shown as an example comprises a recess 27 between two opposing webs 27.1, 27.2.
  • the clothing strip after Figure 3a be used.
  • the clothing can also be used in a fixed carding element.
  • a magnet 28 is arranged, for example glued.
  • Permanent magnets with a high magnetic coercive field strength such as magnets with a neodymium-iron-boron alloy or a samarium-cobalt alloy, are preferably used as the magnet 28, with which the risk of demagnetization at operating temperatures above 50° Celsius is low.
  • the side of the carrier plate 25 facing away from the tooth base 24.1 forms the upper side of the clothing strip 23, with which it can be inserted into the flat bar 14 and can be attracted by the magnet 28.
  • the carrier plate 25 can be made of a ferromagnetic, electrically conductive tinplate and can then adapt as flexibly as possible to the surface of the magnet 28 in order to be flush there.
  • the clothing strip 23 according to Figure 4a is inserted with its upper side into the recess 27, in which the tongue 26 is first inserted into the groove 29 and the clothing strip 23 is rotated counterclockwise or tilted into the recess 27.
  • the tooth tips of the clothing carrier 23 point in their inclination against the direction of rotation of the spool and are directed towards the fibers to be carded.
  • the form fit between groove 29 and tongue 26 prevents the clothing strip 23 from tilting due to the magnetic connection.
  • the clothing strip 23 is thus held in the flat foot of the flat bar 14 not only in a force-fitting manner, but also in a form-fitting and exchangeable manner.
  • the form fit can also be produced by other means, for example a dovetail shape, an integrated fastening means or an outer cover.
  • the support plate 25 can essentially correspond to the length of the flat bar 14 . It would basically be the same It is conceivable that the individual toothed segments 24 could also be fastened to the carrier plate in a materially bonded manner via their tooth base 24.1, for example by gluing.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP23150090.1A 2022-02-10 2023-01-03 Support de garniture pour un élément de cardage d'une machine de filature ; élément de cardage ainsi que machine de filature Pending EP4227456A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022103109.8A DE102022103109A1 (de) 2022-02-10 2022-02-10 Garniturträger für ein Kardierelement einer Spinnereimaschine, Kardierelement sowie Spinnereimaschine

Publications (1)

Publication Number Publication Date
EP4227456A1 true EP4227456A1 (fr) 2023-08-16

Family

ID=87143581

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23150090.1A Pending EP4227456A1 (fr) 2022-02-10 2023-01-03 Support de garniture pour un élément de cardage d'une machine de filature ; élément de cardage ainsi que machine de filature

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EP (1) EP4227456A1 (fr)
DE (1) DE102022103109A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0091986A1 (fr) * 1982-04-16 1983-10-26 Graf & Cie. A.-G. Garniture de chapeau de machine à carder
CH654341A5 (en) 1981-11-04 1986-02-14 Graf & Co Ag Card clothing intended to be connected to the flat bars of a card
EP0253071A2 (fr) * 1986-07-18 1988-01-20 Staedtler & Uhl Appareil pour fixer des éléments de dent de scie poinçonnés sur un élément support d'une machine préparatoire du filage
WO2013178319A1 (fr) * 2012-06-01 2013-12-05 TRüTZSCHLER GMBH & CO. KG Garniture de carde et barre de chapeau pour une machine textile
DE102013104480A1 (de) 2013-05-02 2014-11-06 TRüTZSCHLER GMBH & CO. KG Garnitur und Deckelstab für eine textile Verarbeitungsmaschine
CN212925262U (zh) * 2020-07-15 2021-04-09 金轮针布(江苏)有限公司 一种梳棉机用固定盖板结构

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH654341A5 (en) 1981-11-04 1986-02-14 Graf & Co Ag Card clothing intended to be connected to the flat bars of a card
EP0091986A1 (fr) * 1982-04-16 1983-10-26 Graf & Cie. A.-G. Garniture de chapeau de machine à carder
EP0253071A2 (fr) * 1986-07-18 1988-01-20 Staedtler & Uhl Appareil pour fixer des éléments de dent de scie poinçonnés sur un élément support d'une machine préparatoire du filage
WO2013178319A1 (fr) * 2012-06-01 2013-12-05 TRüTZSCHLER GMBH & CO. KG Garniture de carde et barre de chapeau pour une machine textile
DE102013104480A1 (de) 2013-05-02 2014-11-06 TRüTZSCHLER GMBH & CO. KG Garnitur und Deckelstab für eine textile Verarbeitungsmaschine
CN212925262U (zh) * 2020-07-15 2021-04-09 金轮针布(江苏)有限公司 一种梳棉机用固定盖板结构

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Publication number Publication date
DE102022103109A1 (de) 2023-08-10

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