EP4332283A1 - Chapeau fixe pour une carde - Google Patents

Chapeau fixe pour une carde Download PDF

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Publication number
EP4332283A1
EP4332283A1 EP23180831.2A EP23180831A EP4332283A1 EP 4332283 A1 EP4332283 A1 EP 4332283A1 EP 23180831 A EP23180831 A EP 23180831A EP 4332283 A1 EP4332283 A1 EP 4332283A1
Authority
EP
European Patent Office
Prior art keywords
exhaust pipe
fixed lid
end pieces
rods
openings
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
EP23180831.2A
Other languages
German (de)
English (en)
Inventor
Lars Weisigk
Mark Meier
Michael GULDIMANN
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 EP4332283A1 publication Critical patent/EP4332283A1/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 lid for a carding machine.
  • the fixed lid has a fixed lid length and has a base body and an exhaust pipe.
  • 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 To separate short fibers and trash parts, working elements in the form of fixed lids with knife elements, so-called separation knives, are used.
  • 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.
  • 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. Further reveals the CH 715 975 A2 a fixed lid with a knife element, the knife element having a plurality of separating knives and associated separating openings. The parts and short fibers separated by the knife element are transported via an air duct to one of the The side of the knife element facing away from the drum is transported away and fed to a suction pipe. The suction pipe is placed on the fixed lid.
  • suction channel or the suction pipe are either an integral part of the fixed lid and cannot be separated from it, or are provided as an attachment part that is screwed to the fixed lid and is not accessible from outside the card.
  • the object of the present invention is now to propose a fixed lid which does not have the mentioned disadvantages of the known prior art and enables an improvement in accessibility for maintenance work on the fixed lid.
  • a fixed lid for a carding machine with a fixed lid length and with a base body and with an exhaust pipe is proposed.
  • the base body is formed from two profiles extending over the length of the fixed cover and two end pieces, with the end pieces being connected to the profiles outside the length of the fixed cover and the exhaust pipe being arranged between the profiles and between the end pieces.
  • the exhaust pipe is held in the end pieces with at least three rods, the rods being guided over the length of the fixed cover through through openings in the exhaust pipe provided in a respective rod axis and held in respective holding openings in the end pieces.
  • the first profile and the second profile are each arranged at a distance from one another between the end pieces and fastened to the end pieces. A distance between the profiles is chosen such that there is space for the exhaust pipe between the profiles.
  • the first profile and the second profile are not directly connected to each other, but are held in 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 has through openings along the length of the fixed cover, in which rods are guided.
  • the through openings are arranged outside an interior of the exhaust air pipe and are designed as openings that are continuous over an entire length of the exhaust air pipe or individual through openings distributed over the length of the exhaust air pipe.
  • the rods provided for fastening the exhaust air pipe are inserted in the direction of the respective rod axis through the holding opening of the first end piece and the through openings of the exhaust air pipe and then into the holding opening of the second end piece.
  • the exhaust pipe is guided over the entire length of the fixed cover between the end pieces and is held on the end pieces.
  • the use of three rods results in exact positioning of the exhaust pipe between the profiles.
  • To dismantle the exhaust air pipe only the rods need to be pulled out in the direction of the rod axis; this can be done using the fixed cover at the front. Pulling out the rods also has the advantage that no complicated use of tools is necessary to loosen any existing screw connections in an area that is difficult to access.
  • the fixed cover does not have to be removed from its attachment in the carding machine to dismantle the exhaust air pipe, which does not require the fixed cover to be readjusted after maintenance and service work has been carried out.
  • the exhaust air pipe itself as well as the separator or knife element arranged between the profiles can be cleaned.
  • Knife elements are advantageously provided as separating elements on the profiles, with an arrangement of individual knife blades also being possible.
  • 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 the fixed cover can be conceivable with a large expansion in the working direction by appropriately selecting the length and width.
  • the arrangement of the knife blades determines a working direction of the fixed lid; the working direction is opposite to the knife blades.
  • the end pieces have an exhaust opening corresponding to an interior of the exhaust pipe and the exhaust pipe is each provided with a seal on the end pieces.
  • corresponding openings must be provided in the end pieces, through which the interior of the exhaust air pipe can be fluidly connected to the suction.
  • An exhaust air opening in the end pieces that corresponds to the dimensions of the interior of the exhaust air pipe results in good flow conditions and enables the exhaust air pipe to be formed within the end pieces.
  • an appropriate seal must be provided between the end piece and the exhaust air pipe.
  • the seal is preferably attached to the front side of the exhaust pipe and is designed according to an expansion of the exhaust pipe and profiles due to the operating temperatures of the fixed cover.
  • the exhaust pipe is preferably provided as an extruded plastic profile. Inserts, for example made of aluminum or steel, are inserted into the exhaust pipe or plastic profile, in which the through openings for the rods are provided.
  • an insert per rod or through opening is provided at the ends of the exhaust pipe in the plastic profiles, viewed in the direction of the fixed cover length.
  • the inserts are welded, pressed or glued into the plastic profile.
  • the through openings are advantageously drilled in the inserts with a small amount of play to a diameter of the rods. As a result, a tolerance in the installation position of the plastic profile or the exhaust air pipe formed by the plastic pipe in the base body can be kept small.
  • guide tubes are inserted in the rod axis between the inserts, through which the rods are guided from one insert to the next insert.
  • the guide tubes guide the rods precisely into the through openings or holding openings.
  • the guide tubes are provided between the inserts and, if the inserts are not provided at the ends of the plastic profile, also between the inserts and the end pieces.
  • the guide tubes are connected to the inserts, making it easy to install the rods and holding the plastic profile exactly in the intended position.
  • the through openings in the inserts can be provided with an inlet.
  • the inlet is a conical opening of the through-opening in at least one direction, so that the rod can be inserted even with a small diameter of the through-opening.
  • inserts are provided in the plastic profile over the length of the fixed cover, and it has been shown that inserting the inserts at a distance of 100 mm to 300 mm is sufficient.
  • the inserts preferably have a thickness of 5 mm to 25 mm.
  • the inserts are also welded, pressed or glued into the plastic profile.
  • the through holes in the inserts are drilled with a small clearance to a diameter of the rods and additionally with a Enema provided.
  • guide tubes can also be attached between the inserts in this embodiment.
  • the exhaust pipe is made as an extruded aluminum profile.
  • the production as an extruded profile enables the through openings to be formed easily over the entire length of the exhaust pipe.
  • the through openings provided in the exhaust air pipe can be formed by appropriate inserts or integrated into the profile due to the design as an extruded profile and are either guided over the entire length of the profile and provided in accordance with the inserts described above.
  • the exhaust pipe is additionally stiffened. As a result, a smaller wall thickness of the extruded profile can be provided and material costs can be minimized.
  • the material aluminum has advantages due to its low weight, and the production of complicated profile shapes with aluminum is also possible cost-effectively.
  • the through openings in the exhaust pipe are larger than a diameter of the rod, with a positioning of the exhaust pipe being determined by an arrangement of the three rods in a triangle and the play-free holding openings in the end pieces.
  • This design of the passage and holding openings minimizes the effort required when assembling the rods and, on the other hand, allows for easy positioning of the exhaust air pipe.
  • Arranging the three rods in a triangle ensures that the exhaust pipe is held without play, even with large through-openings in the exhaust pipe.
  • the through openings, seen in a triangle are spaced so far apart that after inserting all three rods, the exhaust air pipe is braced in the three rods.
  • the through openings are designed as elongated holes. This means that the exhaust pipe can only be moved in the longitudinal direction of the through openings when it is installed.
  • a later position of the exhaust air pipe can be determined by drilling the through openings on the base body and/or the end pieces.
  • cost-effective production of the exhaust pipe profiles is possible due to generous tolerances in the area of the through openings.
  • the rods are advantageously provided with a rod tip at at least one end. The rod tip is formed by a taper in the rod diameter. This makes it easier to insert the rods into the precisely fitting holding openings of the end pieces, since precise guidance of the rods in the through openings of the exhaust air pipe is not provided. A further improvement can be achieved by making the holding openings at least partially conical.
  • the exhaust pipe between the end pieces is open against the working direction over the fixed lid length 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 from the knife elements to one Interior of the exhaust pipe is formed.
  • 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 rod axes are arranged in a triangle such that two rod axes are arranged close to the slot-shaped opening.
  • At least one intermediate rib piece is provided between the end pieces, the profiles being connected to the intermediate rib piece.
  • 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. According to the previous description, when using a plastic profile with inserts, guide tubes arranged between an insert and the intermediate rib piece in the respective rod axis are advantageously to be provided.
  • the exhaust pipe is divided by the intermediate rib piece, with a seal being provided between the exhaust air pipe and the intermediate rib piece.
  • the advantage of dividing the exhaust air pipe is that after removing the rods, one or all parts of the exhaust air pipe can be lifted out of the fixed cover without having to remove the intermediate rib piece from the profiles.
  • the intermediate rib piece is provided with an exhaust air opening corresponding to the interior of the exhaust pipe.
  • a seal is also provided between the exhaust pipe and the intermediate rib piece, analogous to the seal between the exhaust pipe and the end pieces.
  • the rods are preferably guided through corresponding passage openings in the intermediate rib piece. In this way, regardless of the number of intermediate rib pieces, the rods are always guided from one end piece in the rod axis to the other end piece and there is no need to insert several rods from both sides of the fixed cover.
  • the rods are divided in the length of the fixed cover and are each held in an end piece and in the intermediate rib piece. This results in an easier insertion of the rods, since they do not have to be pushed through to the second end piece in addition to the end piece and a first exhaust pipe and the intermediate rib piece and a second part of the exhaust pipe. Accordingly, the passage openings in the intermediate rib piece are provided as holding openings analogous to the holding openings in the end pieces.
  • the rods advantageously have a diameter of 2 mm to 15 mm and a length of 1.005 to 1.4 times the length of the fixed lid.
  • the diameter of the rods must be selected according to their load, the length of the fixed cover and the number of intermediate rib pieces, taking into account the rod material. It has been shown that a rod diameter of 6 mm is sufficient with a fixed cover length of 1.5 meters and the installation of an intermediate rib piece when using aluminum rods.
  • the through openings in the exhaust pipe with a minimum diameter of 6.1 mm and the through openings in the intermediate rib piece of 6.1 mm have proven to be effective.
  • the holding openings in the end pieces are also designed accordingly with a diameter of 6.1 mm.
  • the rods made of stainless steel or plastic can be used. Depending on the choice of material for the rods, larger rod diameters should be selected for plastic and smaller rod diameters for steel than for the preferred aluminum rods.
  • the rods When installed, the rods are preferably provided with a lock on at least one of the end pieces.
  • a lock on at least one of the end pieces.
  • Such security against the rods falling out can be achieved using common designs, for example with locking nuts, with split pins, with a plastic cap, with a cover of the rod end by another component or other variants known from the prior art. Types of security that can be attached and removed without special tools are preferred.
  • 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 20 and two end pieces 22 and 23 arranged at the respective ends of the profiles 19 and 20 outside the fixed lid length 18.
  • the first profile 19 is equipped with an attachment 21, for example screws, held on the end pieces 22 and 23 and the second profile 20 is also attached to the end pieces 22 and 23 with appropriate fasteners.
  • the profiles 19 and 20 together with the end pieces 22 and 23 thus form the base body of the fixed cover 17.
  • the fixed cover 17 is held in the carding machine with the end pieces 22 and 23.
  • An exhaust pipe 30 is arranged between the first profile 19 and the second profile 20.
  • the exhaust pipe 30 is held on the end pieces 22 and 23 with three rods 37, 38 and 39, the rods 37, 38 and 39 being guided continuously from one end piece 22 to the other end piece 23.
  • a knife element 26 is arranged below the exhaust pipe 30 and is fastened to the first profile 19 and the second profile 20 with screws 28.
  • the knife element 26 has a plurality of ejection openings 27, with one edge of the ejection opening 27 each being shaped as a knife blade.
  • the exhaust pipe 30 is arranged between the end pieces 22 and 23.
  • An exhaust air opening 24 corresponding to an interior space 33 of the exhaust air pipe 30 is provided in the end pieces 22 and 23.
  • the exhaust opening 24 allows one Connection of the interior 33 of the exhaust pipe 30 with an exhaust system, not shown, outside the fixed cover 17 for the suction of the parts separated by the knife element 26.
  • a seal 32 is provided between the exhaust pipe 30 and a surface of the respective end pieces 22 and 23 facing the exhaust pipe 30.
  • Figure 3 shows a schematic sectional view at point XX of the fixed cover 17 Figure 2 .
  • the first profile 19 and the second profile 20 are held at a distance from one another on the end piece 23 with fasteners 21.
  • the knife element 26 is attached to the first profile 19 and the second profile 20 with the screws 28. Due to the arrangement of the knife blades in the knife element 26, there is a working direction 29 of the fixed lid 17, the working direction 29 being opposite to the knife blades.
  • the exhaust pipe 30 is arranged, which, viewed in the working direction 29, has a smaller extent than the distance between the profiles 19 and 20 in order to enable the exhaust pipe 30 to be expanded in a direction pointing away from the knife element 26, without one the profiles 19 or 20 must be detached from the end pieces 22 and 23.
  • Three through openings 31 are provided in the profile of the exhaust pipe 30, which are arranged in a triangle.
  • the three rods 37, 38 and 39 are guided through the through openings 31.
  • the through openings 31 are designed to be larger in diameter than the rods 37, 38 and 39, but are arranged in such a way that when all three rods 37, 38 and 39 are inserted, the exhaust air pipe 30 is braced in the three rods 37, 38 and 39 results.
  • the rods 37 and 38 are each arranged on one side of the opening 34 of the exhaust pipe 30.
  • the exhaust pipe 30 is provided with the 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 26 and an interior 33 of the exhaust pipe 30 is created through the opening 34.
  • the opening 34 is provided with a seal 35 on a side of the exhaust pipe 30 facing the first profile 19 and on a side of the opening 34 facing away from the knife element 26. Through the seal 35 is seen in cross section Completed channel created by the knife element 26 along a surface of the first profile 19 facing the exhaust pipe 30 via the opening 34 into the interior 33 of the exhaust pipe 30.
  • Figure 4 shows an enlarged schematic representation of a connection between the exhaust pipe 30 and an end piece 23 at point A Figure 2 .
  • the rod 37 with its diameter 40 and a length 41 is guided in a rod axis 36 through the through opening 31 in the exhaust pipe 30 and the holding opening 25 in the end piece 23.
  • the rod 37 is held without play in the holding opening 25 of the end piece 23, whereas the through opening 31 has a larger diameter than the diameter 40 of the rod 37.
  • the rod 37 has a rod tip 42 at its end, which serves as a threading aid into the holding opening 25.
  • the length 41 of the rod is greater than the fixed cover length 18 by at least the dimensions of the end piece 23.
  • the rod 37 is also secured with a fuse 43 against falling out of the holding opening 25, the fuse 43 being shown as an example as a bolt.
  • the exhaust opening 24 is provided in the end piece 23 and corresponds to the interior 32 of the exhaust pipe 30.
  • a seal 32 is provided between the end piece 23 and the exhaust pipe 30.
  • Figure 5 shows a schematic representation of a perspective view of a second embodiment of a fixed lid 17.
  • an intermediate rib piece 44 is installed in order to stiffen the base body of the fixed lid 17 consisting of the first profile 19, the second profile 20 and the end pieces 22 and 23, an intermediate rib piece 44 is installed.
  • the intermediate rib piece 44 is provided, for example, in the middle of the fixed cover length 18.
  • the exhaust pipe 30 is shown in one half of the fixed lid 17; in the other half, the exhaust pipe 30 is not shown in order to be able to show the knife element 26.
  • the knife element 26 is attached to the first profile 19 and to the second profile 20 with the screws 28.
  • the second profile 20 is screwed to fasteners 21 on the end pieces 22 and 23 and, in addition, a fastening 21 designed as a screw connection is provided with the intermediate rib piece 44.
  • a fastening 21 designed as a screw connection is provided with the intermediate rib piece 44.
  • the exhaust pipe 30 is designed in two parts, with an exhaust opening 24 corresponding to the exhaust openings 24 in the end pieces 22 and 23 being provided in the intermediate rib piece 44.
  • the exhaust pipe 30 is held in the end pieces 22 and 23 by three rods 37, 38 and 39.
  • the rods 37, 38 and 39 are guided along the rod axes 36 through the first end piece 22 and the exhaust pipe 30 as well as the intermediate rib piece 44 and end in the second end piece 23, with corresponding passage openings 45 in the intermediate rib piece 44 for the passage of the rods 37, 38 and 39 are provided.
  • Figure 6 shows a schematic representation of a cross section of a profile of the exhaust pipe 30.
  • the cross section shows a simplified representation of an embodiment of an extruded profile.
  • the profile has the through openings 31 through which the rods 37, 38 and 39 are guided.
  • the interior 33 of the exhaust pipe 30 is provided with the opening 34, as a result of which the interior 33 is only slightly more than two-thirds enclosed by the profile of the exhaust pipe 30.
  • the profile is expanded accordingly. In places of no particular importance, either a low material thickness is provided or the wall thicknesses of the profile are limited by cavities 46.
  • FIG. 7 shows a schematic sectional view of a cross section of a further embodiment of an exhaust pipe 30.
  • the exhaust pipe 30 is designed as a plastic profile 47.
  • inserts 48 are provided in the plastic profile.
  • the inserts 48 are inserted into the plastic profile 47 by pressing, welding or gluing.
  • the respective through openings 31 are provided in the inserts 48 through which the rods 37, 38 and 39 are guided.
  • the shape of the plastic profile forming the interior 33 and the opening of the exhaust pipe 30 is the same as when the exhaust pipe 30 is designed as an extruded aluminum profile.
  • Figure 8 shows a schematic sectional view at the location YY of the exhaust pipe 30 Figure 7 .
  • the rod 37 is shown being inserted into the rod axis 36 in the direction of the arrow.
  • the rod 37 slides through a guide tube 50 in the direction of the insert 48.
  • the insert 48 is held in the plastic profile 47.
  • the rod 37 is further displaced through the guide tube 50 in the direction of the arrow, the rod 37 reaches the through opening 31 in the insert 48.
  • Figure 9 shows a schematic sectional view at point ZZ of the exhaust pipe 30 Figure 7 .
  • Two spaced-apart inserts 48 are held in the plastic profile 47.
  • the rod 38 is inserted through both inserts 48 in the direction of the arrow.
  • the inserts 48 each have a through opening 31 for the rod 38 to pass through, with an inlet 49 being arranged upstream of the through opening 31 as seen in the direction of the arrow.
  • the inlet 49 corresponds to a conical opening of the through opening 31, so that the rod 38 provided with a rod tip 42 slides into the through openings 31 when it is displaced in the rod axis 36 in the direction of the arrow.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Exhaust Silencers (AREA)
EP23180831.2A 2022-08-10 2023-06-22 Chapeau fixe pour une carde Pending EP4332283A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH000946/2022A CH719954A1 (de) 2022-08-10 2022-08-10 Festdeckel für eine Karde.

Publications (1)

Publication Number Publication Date
EP4332283A1 true EP4332283A1 (fr) 2024-03-06

Family

ID=86942858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23180831.2A Pending EP4332283A1 (fr) 2022-08-10 2023-06-22 Chapeau fixe pour une carde

Country Status (3)

Country Link
EP (1) EP4332283A1 (fr)
CN (1) CN117587553A (fr)
CH (1) CH719954A1 (fr)

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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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US4126915A (en) * 1977-10-31 1978-11-28 John D. Hollingsworth On Wheels, Inc. Apparatus for stripping card flats and the like
CN203938778U (zh) * 2014-07-09 2014-11-12 浙江锦峰纺织机械有限公司 一种带分梳齿的棉网清洁器

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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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