EP4332284A1 - Chapeau fixe pour une carde - Google Patents

Chapeau fixe pour une carde Download PDF

Info

Publication number
EP4332284A1
EP4332284A1 EP23180832.0A EP23180832A EP4332284A1 EP 4332284 A1 EP4332284 A1 EP 4332284A1 EP 23180832 A EP23180832 A EP 23180832A EP 4332284 A1 EP4332284 A1 EP 4332284A1
Authority
EP
European Patent Office
Prior art keywords
profile
fixed lid
knife
end pieces
exhaust pipe
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
EP23180832.0A
Other languages
German (de)
English (en)
Inventor
Lars Weisigk
Mark Meier
Michael GULDIMANN
Jens Weidemann
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 EP4332284A1 publication Critical patent/EP4332284A1/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
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/34—Grids; Dirt knives; Angle blades
    • 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
    • D01G15/02—Carding machines
    • 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
    • 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
    • D01G15/76—Stripping or cleaning carding surfaces; Maintaining cleanliness of carding area
    • D01G15/80—Arrangements for stripping cylinders or rollers
    • D01G15/805—Arrangements for stripping cylinders or rollers by suction or blowing

Definitions

  • the invention relates to a fixed cover for a card for processing fibers.
  • the fixed cover has a fixed cover length which corresponds to a working width of the card.
  • the fixed lid has a base body with knife elements attached to it, the knife elements having a working direction.
  • Cards are used in spinning preparation systems, which contain various work elements for cleaning, sorting, opening, carding, etc. of the fiber material to be processed.
  • a wide variety of types of fibers are processed, including cotton fibers or chemical fibers or mixtures thereof.
  • separation knives work elements in the form of fixed lids with knife elements, so-called separation knives.
  • the trash parts or short fibers are separated by the separation knife from a rotating drum, with the help of which the fiber material is transported past the fixed lids.
  • an opening is provided in front of the separation knife in the working element against the surface of the rotating drum and the fiber material transported on it.
  • the opening serves as an ejection opening for the components separated from the fiber material by the separation knife. After the components separated by the separation knife have passed the ejection opening, they are fed to a suction channel and conveyed away.
  • Separation knives of various designs are used in cards during spinning preparation.
  • Fixed lids of this type are known in various designs.
  • WO2010/003265 a fixed lid, which consists of two parts that are held together with a clamp. The two parts form the suction channel, with a separation opening facing the drum between the two components and a single separation knife in the form of a knife blade that extends over the working width being provided on one of the two components.
  • This type of fixed lid is constructed with an additional upstream guide surface and a downstream one Carding surface for the separation of dirt and short fibers, due to the use of individual knife blades, takes up a large part of the available peripheral area of the drum opposite them and therefore only a small number of separation knives can be used.
  • the object of the present invention is now to propose a fixed cover which does not have the disadvantages mentioned of the known prior art and enables an improvement in accessibility for maintenance work.
  • the task is solved by the features in the characterizing part of the independent patent claim.
  • a fixed cover for a card with a fixed cover length which corresponds to a working width of the card is proposed.
  • the working width of the card is the maximum width, seen in a longitudinal direction of a drum axis, on which processing of fiber material takes place.
  • the fixed lid has a base body and knife elements attached to the base body and an exhaust pipe held on the base body, the knife elements having a working direction.
  • the working direction corresponds to the sequence of separating knives and separating openings arranged in the knife element, with the separating opening being arranged upstream of the associated separating knife when viewed in the working direction.
  • the basic body consists of at least a first profile and a second profile and two end pieces.
  • the first profile is arranged in front of the second profile when viewed in the working direction, with the end pieces being provided on both sides of the fixed cover outside the length of the fixed cover.
  • the first profile and the second profile are arranged between the end pieces and attached to the end pieces.
  • the first profile and the second profile are therefore not directly connected to one another, but are held in their position by the common end pieces.
  • the profiles are preferably fastened to the end pieces using screws, but other types of fastening such as welding, gluing or a connection using quick-release fasteners are also conceivable.
  • pins can be used for fastening and positioning.
  • the exhaust pipe extends over the length of the fixed cover and is arranged between the first profile and the second profile and is also held by the end pieces.
  • the exhaust pipe By arranging the exhaust pipe between the profiles in the working direction, a low overall height of the fixed cover is achieved.
  • the exhaust air pipe is guided over the entire length of the fixed cover between the end pieces and held on the end pieces; this can be done, for example, with a direct screw connection or a flange connection.
  • the first profile and the second profile are connected by the knife elements.
  • the knife elements span a distance between the first profile and the second profile, viewed in the working direction.
  • the knife elements to be advantageously used for such fixed lids have a large number of knife blades and are made, for example CH 715 974 A1 known.
  • Such knife elements are formed from a sheet metal, with the ejection openings in the sheet metal being formed in the form of passage openings and the knife blades being formed by edges of the passage openings.
  • the ejection openings of all knife blades of a knife element can be assigned to a single common suction channel.
  • the dimensions, number and arrangement of the knife blades or ejection opening are possible in many variations.
  • the dimensioning of the knife elements themselves can also be adapted to their application, so that fixed lids with a large extension in the working direction can be imagined through an appropriate choice of length and width.
  • the arrangement of the exhaust air pipe, viewed in the working direction, between the profiles and the end pieces and an attachment of the exhaust air pipe only to the end pieces make it possible to easily expand the exhaust air pipe in the radial direction.
  • the exhaust pipe can be lifted out between the profiles for cleaning purposes without having to remove the fixed cover itself. After removing the exhaust pipe, the exhaust pipe itself and the blade element can be cleaned.
  • At least one intermediate rib piece is provided to connect the first profile with the second profile as seen in the fixed cover length.
  • the profiles are attached to at least one intermediate rib piece.
  • Cards are built with different working widths; working widths of one to one and a half meters are common today. So that the profiles do not have to be made excessively thick due to a larger working width of the card and thus also a larger fixed cover length, it is advantageous if at least one intermediate rib piece is provided between the end pieces.
  • the use of intermediate rib pieces leads to a stiffening of the entire base body of the fixed lid.
  • the knife elements are preferably attached to the profiles with screws.
  • the through openings in the knife elements are provided with screw recesses on the side opposite the profiles, so that countersunk screws can be used. Due to the low material thickness of the knife elements, countersunk head screws with a flat angle are used. Due to the screw recesses, the countersunk screws are arranged flush with the knife elements, which results in a flat surface of the entire fixed cover compared to the drum.
  • the screw connection between the knife elements and the profiles makes it easy to replace the knife elements. Appropriate securing of the screw connections, for example with adhesive, ensures that the knife elements cannot detach from the profiles. A groove or clamp connection would also be conceivable as an alternative. It is an advantage if in the Deep-drawn screw countersinks are provided for the knife elements. Compared to machining, the deep-drawing process used to produce the screw recesses does not produce any sharp edges that could damage the fibers.
  • slot nuts with an internal thread for fastening the knife elements are provided in the profiles.
  • the sliding blocks are inserted into a groove in the profiles that runs along the length of the fixed cover.
  • the use of sliding blocks instead of internal threads machined directly into the profiles enables, on the one hand, savings in the production of the profiles and, on the other hand, simple tolerance compensation for production-related deviations in the intended distances between the fastening points of the knife elements over the fixed cover length. This is particularly important when there are a large number of attachment points along the length of the fixed lid.
  • the knife elements are subject to a curvature.
  • a distance in the working direction between the internal threads in the profiles or in the sliding blocks is smaller than a manufacturing distance between the through openings in the knife elements in their flat (uncurved) state.
  • a curvature of the knife elements is achieved, which largely corresponds to a curvature of the drum surface.
  • Documents are advantageously provided between the profiles and the knife element. These documents have through openings for the screws of the knife elements.
  • the pads allow the curvature of the knife elements to be easily adjusted by appropriate shaping on a side of the pad facing the knife element.
  • the documents used can also be made in two parts, whereby: A compensating plate is inserted between the profile and the base to change a height, which sets a distance between the profile and the base.
  • the knife elements are preferably also screwed to the end pieces and, if present, to the intermediate rib pieces.
  • Surfaces of the end pieces and possibly the intermediate rib pieces facing the knife elements are shaped in accordance with the curvature of the knife elements to be achieved.
  • Surfaces of the profiles facing the knife elements are also adapted to the intended curvature in their shape, so that a play-free support of the knife elements on the surfaces of the profiles, the end pieces and any intermediate rib pieces is achieved.
  • support ribs projecting on one side between the profiles are advantageously provided.
  • the knife elements are screwed to the support ribs attached to the profiles. This ensures an exact curvature of the knife elements even with a larger distance between the profiles as seen in the working direction.
  • the knife elements are fastened to the support ribs in a known manner using screws.
  • the same type of screws are used for the screw connections as for the screw connections of the knife elements on the profiles.
  • sunk nuts can be inserted into the support ribs, with the recesses of the screw nut being designed in such a way that the screw nuts, similar to fastening using sliding nuts, enable tolerance compensation of the individual fastenings.
  • widths of the fixed lids can range from 100 mm to 200 mm, which results in a multiple increase in the number of separation knives compared to the single knives used today due to the use of the knife elements.
  • exhaust air connection pieces facing outwards are provided on the end pieces on both sides of the fixed cover.
  • the arrangement of exhaust air connection pieces makes it possible to easily connect the exhaust air pipes to a suction system on the card, for example with hoses.
  • a connection on both sides is an advantage for fixed lids with a long fixed lid length; the exhaust air pipe can be divided into two separate pipe sections using the intermediate rib piece, each of which is connected to an exhaust air system from different sides.
  • the exhaust pipe is open between the end pieces against the working direction over the length of the fixed cover and the opening is provided with a seal against the first profile on a side facing away from the knife elements, such that a connection is formed from the knife elements to an interior of the exhaust pipe.
  • the cross-section of the exhaust pipe is three-quarters closed and has a slot-shaped opening along the length of the fixed cover. The slot-shaped opening is directed towards the first profile and extends between the two end pieces over the entire length of the fixed cover. A seal is provided over the entire length of the opening between a side of the slot-shaped opening facing away from the knife elements and the first profile.
  • the arrangement of the opening and the seal creates a connection between the interior of the exhaust pipe and a side of the knife elements facing the exhaust pipe. This enables direct suction of the components passing through the ejection openings of the knife elements.
  • the components separated by the separation knives such as short fibers and trash, pass along the first profile through the slot-shaped opening directly into the exhaust pipe.
  • the exhaust pipe is designed in two parts along the length of the fixed cover, with a division being provided on the intermediate rib piece.
  • this version has the advantage that by dividing the exhaust pipe, suction can take place from both ends of the fixed lid can. This means that a lower negative pressure is required for blockage-free suction than with one-sided suction.
  • the first profile and the second profile have a distance from one another in the working direction on a side facing away from the knife elements, which is greater than an extension of the exhaust pipe in the working direction.
  • Figure 1 shows a side view of a schematic representation of a card according to the prior art.
  • the fiber flakes 1 to be carded which can consist of natural fibers or chemical fibers or mixtures thereof, are filled into a filling shaft (not shown) in the form of roughly cleaned and dissolved fiber flakes.
  • the fiber flakes are removed from the filling shaft as cotton wool by a breezer.
  • the licker-in 2 can be formed from a single or several licker-in rollers 3.
  • the fiber flakes are broken down into individual fibers on the drum 4, parallelized and cleaned.
  • the stationary carding elements 15 and separation elements 16 are arranged in the pre-carding zone 10 and the post-carding zone 12.
  • the drum 4 is provided with a clothing on its surface and rotates about its axis of rotation 5 in a direction of rotation 6 from the licker-in 2 via the main carding zone 11 to the doffer 7.
  • the fibers on the drum 4 form a fiber fleece, which is removed from the customer 7 and then formed into a card sliver 9 in a manner known per se in a band forming unit 8 consisting of various rollers.
  • the separation elements 16 are used in particular to separate dirt, impurities and short fibers.
  • the separating elements 16 are each provided with a separating knife and are used in the pre-carding zone 10, the post-carding zone 12 and, if necessary, in the under-carding zone 13 as well as in the licker-in 2.
  • the separation elements 16 are held stationary in the card and are also referred to as fixed lids. With the help of the separation knives, dirt particles, impurities and short fibers from the surface of the drum 4 as well as the surface of a pre-rice roller 16 are separated from the fiber fleece and transported away.
  • FIG. 2 shows a schematic representation of a first embodiment of a fixed lid 17.
  • the left half of the fixed lid 17 is shown in a view and the right half of the fixed lid 17 is shown in a sectional view.
  • a base body of the fixed lid 17 with a fixed lid length 18 is formed from a first profile 19, a second profile 21 and two end pieces 26 and 27 arranged at the respective ends of the profiles 19 and 21 outside the fixed lid length 18.
  • the first profile 19 is with a fastening 20, for example screws, held on the end pieces 26 and 27 and the second profile 21 is correspondingly attached to the end pieces 26 and 27 with fastening 22, for example screws.
  • the profiles 19 and 21 together with the end pieces 26 and 27 thus form the base body of the fixed cover 17.
  • the fixed cover 17 is held in the carding machine with the end pieces 26 and 27.
  • An exhaust pipe 23 is arranged between the first profile 19 and the second profile 21.
  • the exhaust pipe 23 is, for example, also held on the end pieces 26 and 27 with a flange 24 and an associated screw connection 25.
  • a knife element 28 is arranged below the exhaust pipe 23 and is fastened to the first profile 19 and the second profile 21 with screws 29.
  • the knife element 28 has a plurality of ejection openings 30, with one edge of the ejection opening 30 each being shaped as a knife blade.
  • FIG 3 shows a schematic sectional view at point XX of the fixed cover 17 Figure 2 .
  • the first profile 19 and the second profile 21 are held at a distance 37 on the end piece 27 with fasteners 20 and 22, respectively.
  • the knife element 28 is attached to the first profile 19 and the second profile 21 with the screws 29. Due to the different length ratios between the fastening points in the profiles 19 and 21 and a length between fastening holes of the knife element 28 viewed in the working direction 31, a curvature 32 is imposed on the knife element 28. This curvature 32 corresponds to a circular arc around the axis of rotation 5 of the card drum.
  • the curvature 32 of the knife element 28 ensures a uniform distance between the knife element 28 and a surface of the drum when the fixed cover 17 is used in the carding machine.
  • the arrangement of the knife element 28 with the knife blades results in a working direction 31, the working direction 31 being directed against the knife blades.
  • the exhaust pipe 23 is arranged, which has an extension 36 when viewed in the working direction 31.
  • the extent 36 is kept smaller than the distance 37 between the profiles 19 and 21 in order to enable the exhaust pipe 23 to be expanded in a direction pointing away from the knife element 28 without one of the profiles 19 or 21 having to be detached from the end pieces 26 and 27 .
  • the exhaust pipe 23 is provided with an opening 34, which extends in a slot shape over the entire length of the fixed cover 18 and is directed against the first profile 19.
  • a connection between the knife element 28 and an interior 33 of the exhaust pipe 23 is created through the opening 34.
  • the opening 34 is provided with a seal 35 on a side of the exhaust pipe 23 facing the first profile 19 and on a side of the opening 34 facing away from the knife element 28. Seen in cross section, the seal 35 creates a closed channel from the knife element 28 along a surface of the first profile 19 facing the exhaust pipe 23 via the opening 34 into the interior 33 of the exhaust pipe 23.
  • Figure 4 shows an enlarged schematic representation of a connection between the first profile 19 and the knife element 28.
  • a longitudinal groove 40 is provided in the first profile 19 over the entire length of the fixed cover, into which a sliding block 42 with an internal thread 43 is inserted.
  • the sliding block 42 is thus displaceable in the direction of the fixed cover length, i.e. perpendicular to the sectional view shown Longitudinal groove 40 held.
  • Screw recesses 41 are provided in the knife element 28.
  • the knife element 28 is screwed to the sliding block 42 with a screw 29, which engages in the internal thread 43.
  • a base 44 is inserted between the first profile 19 and the knife element 28 in an area of the screw recess 41.
  • a surface of the first profile 19 facing the knife element 28 and a side of the base 44 also facing the knife element 28 are formed in accordance with the curvature of the knife element 28 to be achieved.
  • Figure 5 shows a schematic representation of a perspective view of a second embodiment of a fixed lid 17.
  • an intermediate rib piece 38 is installed in order to stiffen the base body of the fixed lid 17 consisting of the first profile 19, the second profile 21 and the end pieces 26 and 27, an intermediate rib piece 38 is installed.
  • the intermediate rib piece 38 is provided, for example, in the middle of the fixed cover length 18.
  • the exhaust pipe 23 is shown in one half of the fixed cover; in the other half, the exhaust pipe 23 is not shown in order to be able to show the knife element 28.
  • the knife element 28 is attached to the first profile 19 and to the second profile 21 with the screws 29.
  • the second profile 21 is screwed to fasteners 22 on the end pieces 26 and 27 and in addition a screw connection 46 is provided with the intermediate rib piece 38.
  • a screw connection 46 is provided with the intermediate rib piece 38.
  • the exhaust pipe 23 is designed in two parts, with the parts of the exhaust pipe 23 being held accordingly on the intermediate rib piece 38.
  • FIG 6 shows a schematic diagram of a third embodiment of a fixed lid 17.
  • the fixed lid 17 with a fixed lid length 18 is shown as a partial view.
  • the second profile 21 is held with the fastening 22 on the end piece 26 arranged outside the fixed cover length 18.
  • the exhaust pipe 23 is arranged behind the second profile 21.
  • the exhaust pipe 23 is, for example, also held on the end piece 26 with a flange 24 and an associated screw connection 25.
  • the knife element 28 is below the exhaust pipe 23 arranged, which is fastened with the screws 29 to the second profile 21 and to the end piece 26.
  • the knife element 28 is longer than the fixed cover length 18, so that an additional attachment of the knife element 28 to the end piece 26 is achieved.
  • an exhaust air connection piece 47 is attached to the end piece 26.
  • support ribs 45 are provided on the second profile 21 on a side facing the exhaust pipe 23.
  • the support rib 45 is attached to the second profile 21 with screw connections 46.
  • the knife element 28 is fastened to the support rib 45 with screws 29.
  • simple screw connections of the support rib 45 are shown as examples.
  • the number of support ribs 45 depends on the dimensions of the profiles 19 and 21 and thus on the rigidity of the base body of the fixed cover 17.
  • Figure 7 shows a schematic sectional view at the location YY of the fixed cover 17 Figure 6 .
  • the first profile 19 and the second profile 21 are held on the end piece 27 with fasteners 20 and 22, respectively.
  • the knife element 28 is attached to the first profile 19 and the second profile 21 with the screws 29. Due to the different length ratios between the end pieces 26 and 27, and thus a distance between the profiles 19 and 21, and a length between fastening holes of the knife element 28 seen in the working direction 31, a curvature 32 is imposed on the knife element 28.
  • This curvature 32 corresponds to a circular arc around the axis of rotation 5 of the card drum.
  • the arrangement of the knife element 28 with the knife blades results in a working direction 31, the working direction 31 being directed against the knife blades.
  • the exhaust pipe 23 is arranged between the profiles 19 and 21.
  • the exhaust pipe 23 is provided with an opening 34, which extends in a slot shape over the entire length of the fixed cover 18 and is directed against the first profile 19.
  • a connection between the knife element 28 and an interior 33 of the exhaust pipe 23 is created through the opening 34.
  • the opening 34 is on one of the first profiles 19 side of the exhaust air pipe 23 and a side of the opening 34 facing away from the knife element 28 are provided with a seal 35.
  • the support rib 45 is attached to the second profile 21 with a screw connection 46.
  • the support rib 45 On a side of the support rib 45 facing the knife element 28, the support rib 45 has a shape corresponding to the curvature 32 of the knife element 28 to be achieved.
  • the knife element is screwed to the support rib 45 with the screws 29, whereby the curvature 32 of the knife element 28 to be achieved is supported and does not have to be maintained solely by the profiles 19 and 21.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP23180832.0A 2022-08-10 2023-06-22 Chapeau fixe pour une carde Pending EP4332284A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH000945/2022A CH719955A1 (de) 2022-08-10 2022-08-10 Festdeckel für eine Karde.

Publications (1)

Publication Number Publication Date
EP4332284A1 true EP4332284A1 (fr) 2024-03-06

Family

ID=86942426

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23180832.0A Pending EP4332284A1 (fr) 2022-08-10 2023-06-22 Chapeau fixe pour une carde

Country Status (3)

Country Link
EP (1) EP4332284A1 (fr)
CN (1) CN117587555A (fr)
CH (1) CH719955A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3336323A1 (de) * 1983-10-06 1985-05-02 Trützschler GmbH & Co KG, 4050 Mönchengladbach Vorrichtung zum ausscheiden von verunreinigungen, wie trash, schalenteile u. dgl. fuer eine karde oder krempel
CH681546A5 (en) * 1989-12-04 1993-04-15 Rieter Ag Maschf Cotton carding machine for improved action - has stationary flat segments with adjustments for working position, surrounding swift at specific locations
WO2010003265A1 (fr) 2008-07-11 2010-01-14 Maschinenfabrik Rieter Ag Elément de travail sur une machine de traitement de fibres
ITBS20120013A1 (it) * 2012-01-31 2013-08-01 Marzoli Spa Bocchetta di aspirazione di una macchina cardatrice
CH715975A2 (de) 2019-03-19 2020-09-30 Rieter Ag Maschf Karde mit Ausscheideelementen.
CH715974A1 (de) 2019-03-19 2020-09-30 Rieter Ag Maschf Messerelement für eine faserverarbeitende Maschine.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR26797E (fr) * 1922-06-20 1924-03-15 Débourreur de cardes
FR1092748A (fr) * 1954-02-04 1955-04-26 Perfectionnements au débourrage continu des garnitures de cardes

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3336323A1 (de) * 1983-10-06 1985-05-02 Trützschler GmbH & Co KG, 4050 Mönchengladbach Vorrichtung zum ausscheiden von verunreinigungen, wie trash, schalenteile u. dgl. fuer eine karde oder krempel
CH681546A5 (en) * 1989-12-04 1993-04-15 Rieter Ag Maschf Cotton carding machine for improved action - has stationary flat segments with adjustments for working position, surrounding swift at specific locations
WO2010003265A1 (fr) 2008-07-11 2010-01-14 Maschinenfabrik Rieter Ag Elément de travail sur une machine de traitement de fibres
ITBS20120013A1 (it) * 2012-01-31 2013-08-01 Marzoli Spa Bocchetta di aspirazione di una macchina cardatrice
CH715975A2 (de) 2019-03-19 2020-09-30 Rieter Ag Maschf Karde mit Ausscheideelementen.
CH715974A1 (de) 2019-03-19 2020-09-30 Rieter Ag Maschf Messerelement für eine faserverarbeitende Maschine.

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Publication number Publication date
CN117587555A (zh) 2024-02-23
CH719955A1 (de) 2024-02-15

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