EP3712306B1 - Carde - Google Patents

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Publication number
EP3712306B1
EP3712306B1 EP20159680.6A EP20159680A EP3712306B1 EP 3712306 B1 EP3712306 B1 EP 3712306B1 EP 20159680 A EP20159680 A EP 20159680A EP 3712306 B1 EP3712306 B1 EP 3712306B1
Authority
EP
European Patent Office
Prior art keywords
drum
elements
knife
card
separating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20159680.6A
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German (de)
English (en)
Other versions
EP3712306A1 (fr
Inventor
Lars Weisigk
Mark Meier
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.)
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Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP3712306A1 publication Critical patent/EP3712306A1/fr
Application granted granted Critical
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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
    • 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
    • D01G15/02—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
    • D01G15/76—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 card for processing fibers with a drum having a working width and carding elements arranged opposite the drum for parallelizing the fibers and separating elements for separating trash parts and short fibers with a suction channel.
  • the circumference of the drum is divided into a pre-carding zone, a main carding zone, a post-carding zone and a sub-carding zone, and the carding elements and the separating elements span the entire working width.
  • Cards are used in spinning preparation plants, which contain various working elements for cleaning, sorting, opening, carding, etc. of the fiber material to be processed.
  • the most diverse types of fibers are processed, including cotton fibers or man-made fibers or mixtures thereof.
  • Working elements with knife elements so-called separating knives, are used to separate short fibers and trash parts.
  • the trash parts or short fibers are separated by the separating knife from a rotating drum, with the help of which the fiber material is transported past the separating knives.
  • an opening in the working element is provided in front of the separating knife against the surface of the rotating drum and the fiber material transported thereon, which serves as an ejection opening for the components separated from the fiber material by the separating knife. After the components separated by the separating knife have passed the ejection opening, they are fed to a suction channel and conveyed away.
  • Different types of separating knives are used in cards in the spinning preparation.
  • the writing describes CH 639 434 A5 a dirt separator, which has a knife blade that is spaced radially from the drum of the card and serves as a knife element, as well as a collecting rail that is also spaced radially. A gap is left between the catch rail and the knife blade. The one from the knife blade and The space delimited by the collecting rail is covered and forms a negative pressure suction chamber.
  • Another cleaning element with a separating knife is disclosed in the document DE 39 02 204 A1 .
  • an ejection distance is determined by the distance between the knife blade and the upstream element.
  • the dirt separated through the ejection opening with the help of the knife blade is guided along the knife blade to a suction duct.
  • a guide element is attached to the back of the upstream element, which can be pivoted into the ejection opening and thereby changes the size of the ejection opening and the separation behavior of the cleaning element.
  • the European patent application EP 0 388 791 A1 also discloses a device for separating dirt with the aid of a knife blade, the knife blade being preceded by a carding element and a guide element being arranged downstream.
  • a carding element and a guide element being arranged downstream.
  • the DE 94 19 619 U1 a flat card with a large number of separating elements, with each carding segment being arranged downstream of a knife/suction chamber unit on the circumference of the drum.
  • a disadvantage of the known devices is that the working elements, due to their construction with an upstream guide surface and a downstream carding surface for separating dirt and short fibers, take up a large part of the available peripheral surface of the rollers opposite them. Due to the necessary size of the suction pipe, a large amount of space is required for the use of a separating knife or a knife blade. As a result, only a limited number of separating points is possible on the available circumference in the various carding zones of the drum. This means that in front of the separating knives or knife blades, a correspondingly large separating opening or a large distance between the element in front of the knife blade and the surface of the opposite roll must be set in order to achieve a required separating rate.
  • the object of the present invention is now to provide a card of the type mentioned at the beginning which does not have the mentioned disadvantages of the known prior art and allows an increase in the number of separating points on the circumference of the drum.
  • the object of the present invention is to achieve a flexible configuration of the throwing distance and an improvement in the separation of dirt and short fibers while reducing the separation of good fibers.
  • a new type of card for processing fibers is proposed with a drum having a drum circumference, a drum surface and a working width, with carding elements for parallelizing the fibers and separating elements for separating dirt lying opposite the drum surface of the drum that can be rotated about an axis of rotation in one direction of rotation and short fibers are arranged and the separating elements are provided with a suction channel.
  • the circumference of the drum is divided into a pre-carding zone, a main carding zone, a post-carding zone and a lower carding zone.
  • the carding elements and the separating elements span the entire working width.
  • At least one separating element with a base body, a suction channel and a knife element is provided in the post-carding zone, the pre-carding zone or the lower carding zone, the knife element having a large number of ejection openings and knife blades assigned to the ejection openings and at least one air guiding element being arranged between the suction channel and the knife element.
  • the ejection openings of all knife blades of a knife element can be allocated in a single common suction channel, which results in further space savings.
  • the large number of knife blades also enables the trash particles to be peeled off gently from the fiber fleece guided under the knife blades, as a result of which good fibers can be avoided.
  • By combining a large number of knife blades in one knife element a diversely variable arrangement, shape and size of the individual knife blades is possible.
  • the number of separating points in the various carding zones or at the licker-in is increased many times over by the proposed design of the separating elements.
  • the ejection openings are evenly distributed over the working width and arranged in rows.
  • At least one air guiding element is arranged between the suction channel and the knife element in the base body.
  • the fact that a large number of successive knife blades and ejection openings are arranged results in air turbulence, which is caused by the suction channel and the movement of the fiber material.
  • the air guiding elements are advantageously arranged at an angle of inclination ⁇ , viewed in the direction of rotation of the drum, inclined toward the blade element.
  • the inclination of the air guiding elements is to be adapted to the design of the suction duct, preferably the angle of inclination ⁇ is 10 to 50 degrees.
  • an air guiding element is assigned to each or every second ejection opening. This design is preferably used when the suction channel is directly connected to the knife element.
  • the air guiding element is parallel to the ejection openings at least in the area Knife element is arranged and a transport space is formed between the knife element and the air guiding element, the transport space being connected to the suction duct.
  • a narrow transport space is formed between the knife element and the suction channel, which is preferably guided into the suction channel at the end of the knife element, viewed in the direction of rotation of the drum.
  • a passive air supply is preferably created in this transport space between the air guiding element and the knife element, whereby an air flow is generated over the knife element in the direction of the suction duct.
  • at least one air supply duct is provided in the base body, with the air supply duct opening into the transport space between the blade element and the air guiding element.
  • the supply air duct enables a controlled, active supply of air into the transport space, for example through the use of compressed air.
  • An active air supply into the transport space is particularly advantageous when the working elements are designed with a large length in the direction of rotation of the drum.
  • the active air supply also makes it possible to clean the transport space with a compressed air impulse.
  • a length of the separating element is preferably 50 mm to 400 mm, seen in the direction of rotation of the drum, and the side of the separating element opposite the drum surface is configured concentrically to the drum.
  • the length of the blade elements must be adapted to their place of use.
  • a width of the knife elements adapted to the working width enables the knife elements to be inserted into the separating elements in modules. By using different knife elements, different versions of knife elements can be provided over the course of the working width.
  • By using longer separating elements there is the possibility of arranging a large number of knife blades over a short distance in a space-saving manner, since only a single suction channel needs to be installed for the entire separating element, regardless of the number of knife blades. With a large length of the separating element, this spans a longer sector of the drum surface, which means that the separating element must be molded onto the drum surface in order to achieve a correspondingly small distance from the drum surface for all knife blades.
  • the blade element is formed from sheet metal with a sheet thickness of 0.05 mm to 2.0 mm, particularly preferably 0.1 mm to 0.8 mm, with im Sheet metal the ejection openings are recessed and the knife blades are formed by edges of the ejection openings.
  • the recesses and thus also the ejection openings and knife blades can be produced by a punching process known from the prior art.
  • the recesses that form the ejection openings can be provided as simple punched openings or with a radius of 0.1 mm to 2.0 mm on the side opposite the knife blades.
  • a rounding of the edges from the punching process on the side of the knife element facing away from the drum surface leads to an improved conveyance of the separated parts into the suction channel.
  • One edge of the ejection opening is bent slightly out of the plane of the sheet metal and forms the knife blade.
  • the individual knife blades protrude by 0.1 mm to 2.0 mm, particularly preferably 0.3 mm to 1.0 mm, from the plane of the ejection openings and result in the effect of a previously used individual knife blade reaching into the fiber material.
  • the knife element also has a necessary seal between the knife element and the base body preferably a frame. Due to this construction, a small sheet thickness can be selected for the blade element even under high loads.
  • the ejection openings of the knife element have a length of 5 mm to 200 mm, a width of 2 mm to 15 mm and a spacing of 0.1 mm to 20.0 mm.
  • the discharge openings have a length to width ratio of less than 20 to 1, with the width of the discharge openings being seen in the direction of rotation of the drum.
  • the longer edge of the ejection opening extends in the direction of the working width so that the edge formed by the ejection opening which is used as the knife blade has an effect corresponding to a separating knife. It has been shown that square ejection openings with a corresponding edge length still meet the requirements.
  • a close arrangement of large ejection openings has an effect on the stability of the knife element and can, under certain circumstances, be compensated for by selecting the size of the knife elements or by increasing the sheet metal thickness.
  • the ejection openings can be designed in various geometric shapes, with a rectangular shape or a rectangular shape rounded at the ends being preferable. In relation to the length of the ejection opening, the knife blades are also correspondingly long. However, trapezoidal or triangular ejection openings are also conceivable.
  • the width of successive ejection openings decreases in the working direction. This means that the ejection openings are getting narrower and narrower as seen in the working direction. As a result, the excretion becomes smaller when viewed in the working direction and better fiber guidance. It has been found that as the width of the ejection opening decreases, the largest width is 2 mm to 20 mm, preferably 3 mm to 10 mm, and the smallest width is 0.1 mm to 12 mm, preferably 2.0 mm to 5.0 mm, a good compromise between fiber guidance and result in excretion.
  • ejection openings arranged one behind the other are offset in the direction of the working width. This ensures that there is no area without a knife blade across the working width.
  • the different variants can also be combined, for example the first ejection openings can be arranged without offset and subsequently staggered and narrowing ejection openings can be provided.
  • At least two guide elements are provided on the blade element in the working direction, with the guide elements being arranged on a side facing the drum surface.
  • the guide elements prevent the knife element from being brought too close to the opposite drum surface when it is used in the card.
  • the guide elements consist of narrow sheet metal strips which are attached to the knife element by welding, soldering or gluing.
  • the guide elements are only a few tenths of a millimeter high so as not to impede the elimination process.
  • the guide elements can be arranged in a straight, oblique, angled, curved or offset manner along their course along the working direction.
  • the guide elements can be made from the same material as the knife element or from plastic.
  • the function of the guide elements can be fulfilled by a corresponding embossing of the blade elements.
  • elevations for example in the form of nubs, are formed in the knife element between the ejection openings by an embossing manufacturing process, which prevent the knife element from being brought too close to the opposite roll surface when it is used in a machine.
  • the knife element is detachably attached to the base body.
  • the construction of the separating element with a detachable blade element attached thereto means that an adjustment of the blade setting by a simple
  • the knife element can be exchanged and there is no need for a difficult adjustment of the knife blades, as is known from the prior art.
  • the blade element can be attached to the base body by using a support body in order to facilitate assembly and disassembly.
  • the same principle can also be applied to changing the ejection distance due to the new construction according to the invention. If, due to a change in the product to be processed, a larger or smaller ejection range is to be set or the separating element is to be limited to a small number of knife blades, this can be done by simply changing the knife element.
  • the blade element is preferably composed of a plurality of sub-elements, with the sub-elements being attached individually to the base body. This results in the advantage that due to wear and tear only the affected elements have to be exchanged.
  • a carding element or a sliding element is attached to the base body between the blade elements.
  • Such an arrangement of various elements corresponds to the current arrangement of Separating, carding and sliding elements in conventional high-performance cards, however, has the advantage that a larger number of knife blades are used and the entire element can be pre-assembled outside of the card.
  • a supply air opening leading across the working width is provided before or after the separating element, which allows air to be exchanged between the drum and the ambient air. It has been shown that when long separating elements are used, the flow conditions on the drum surface can be calmed by such an air exchange.
  • figure 1 shows a schematic representation of a known revolving flat card in a side view.
  • the fiber tufts 1 to be carded which can consist of natural fibers or chemical fibers or mixtures thereof, are filled into a hopper (not shown) in the form of cleaned and dissolved tufts. From the hopper, the flakes are as a breezeur respectively.
  • Pick-in 2 taken over and a drum resp. Drum 3 fed. The flakes are broken up on the drum 3, parallelized and cleaned. Due to the upstream connection of a multiple licker-in 2, this already partially dissolves and cleans the fiber tufts 1 . These processes take place through the interaction of drum 3, respectively.
  • the stationary working elements 12, 13, 14, 15 are arranged over the drum circumference in four main zones, a pre-carding zone 9, a post-carding zone 10 and a lower carding zone 11.
  • the main carding zone is formed by the traveling blanket unit 5.
  • the drum 3 is provided with clothing on its surface and rotates about its axis of rotation 4 in a direction of rotation 17 from the licker-in 2 via the main carding zone to a doffer roller 6.
  • the fibers on the drum 3 form a fiber web, which is removed from the doffer roller 6 and then formed into a card sliver 8 in a manner known per se in a sliver-forming unit 7 consisting of various rollers becomes.
  • the stationarily attached working elements in the various carding zones 9, 10, 11 are, for example, carding elements 12, working elements with separating knives 13, 14, 15 or guide or cover elements.
  • Working elements with separating knives 13, 14, 15 are used to separate dirt, impurities and short fibers.
  • Working elements with separating knives 13 , 14 , 15 are used in the pre-carding zone 9 , the post-carding zone 10 , the lower carding zone 11 and also in the licker-in 2 .
  • dirt particles, impurities and short fibers are separated from the surface of the drum 3 and the surface of a rib roller 15 from the fiber fleece and transported away.
  • FIG figure 2 shows an enlarged representation of the post-carding zone 10 after FIG figure 1 .
  • three working elements 15 are shown in the embodiment with a separating knife 18 and a suction pipe 19 .
  • the separating knives 19 remove impurities and dirt from the surface of the peeled off at the working element 15 in the direction of rotation 17 of the drum 3 past fiber material and transported away through the suction pipe 20.
  • the working elements 15 with their separating knives 19 and the suction pipes 20 are fixed in place on the side plates 18 of the card.
  • the side shields 18 are supported on both sides of the drum 3 on a machine stand (not shown).
  • the working elements 15 opposite a drum surface 23 span the drum 3 over its entire working width.
  • the working elements 15 are provided with a carding strip 21 and a sliding element 22 . It is also possible to dispense with the design of side shields 18 and to support the various stationary elements and the drum 3 in a column construction.
  • FIG 3 shows a schematic representation of a first embodiment of a separating element 15.
  • the separating element 15 has a working width A and is formed from a base body 24, which is formed from two parts in the exemplary embodiment shown and is joined together by a clamp.
  • the base body is shaped into a suction channel 25 .
  • a knife element 26 is fastened to the base body 24 below the suction channel 25 .
  • the attachment of the knife element 26 to the base body 24 itself is not shown and can be formed according to the known prior art by a detachable connection, for example screws, clips, or a non-detachable connection, for example welding, gluing.
  • Ejection openings 27 are provided in the knife element 26 and create a connection from the suction channel 25 to a drum surface (not shown) opposite the separating element 15 .
  • the edges of the ejection openings 27 opposing a direction of rotation 17 of the drum are designed as knife blades 28 .
  • a plurality of knife blades 28 and the ejection openings 27 each assigned to a knife blade 28 are arranged one behind the other. All ejection openings 27 are connected to the suction channel 25, resulting in a variety of knife blades 28 with only one suction channel 25 results.
  • air guide elements 29 are provided in order to improve the flow from the ejection openings 27 into the suction channel 25, air guide elements 29 are provided.
  • the air guide elements 29 are held in the base body 24 inclined at an angle ⁇ relative to the direction of rotation 17 of the drum.
  • FIG 4 shows a schematic representation of a second embodiment of a separating element 14.
  • the separating element 15 is compared to the embodiment according to FIG figure 3 shown with a much greater length C.
  • a suction channel 25 is attached to a base body 24 .
  • the suction channel 25 is attached to the base body 24 at one end of the separating element 15 .
  • the contact surfaces between the base body 24 and the suction channel 25 are provided with a seal 33 .
  • a knife element 26 is attached to the side of the base body 24 opposite the suction channel 25 .
  • the blade element 26 has a shape that is curved in the direction of rotation 17 of the drum to match the opposite drum surface (not shown) in the operating state.
  • the blade element 26 is connected to the base element 24 via a support body 34 .
  • an air guiding element 29 which is arranged over an effective width of the blade element 26 in such a way that a transport space 30 is formed along the blade element 26 viewed in the drum rotation direction 17 .
  • the transport space 30 is connected to the suction channel 25 by the base body 24 .
  • the transport space 30 is connected to the environment via an air inlet opening 32 provided in the base body 24 . Due to the arrangement shown, a negative pressure prevailing in the suction channel 25 causes an air flow from the air inlet opening 32 along the blade element 26 in the direction of drum rotation 17 through the transport chamber 30 to the suction channel 25.
  • the trash parts and short fibers separated by the blade element 26 are transported with the air flow into the suction channel 25 led.
  • additional compressed air can be introduced into the transport space 30 through an air supply duct 31 .
  • the supply air duct 31 is arranged in such a way that the air flow generated by the negative pressure in the suction duct 25 is amplified or supported in the transport space 30 .
  • the base body 24 is designed in such a way that the suction channel 25 extends from the figure 4 shown position in a seen in the direction of drum rotation 17 opposite position over the air inlet opening 32 can be moved. The consequence of this is that in the transport space 30 the direction of the air flow is reversed in relation to the direction of rotation 17 of the drum.
  • FIG 5 shows a schematic representation of a partial view of a separating element 15 in direction X after the figure 4 .
  • the separating element 15 shown has a base body 24 with a length C viewed in a direction of rotation 17 of the drum and a width which exceeds the working width A. Outside the working width A is the area of the separating element 15 which is used to rest the separating element 15 on the side plates (not shown) of the card. In this case, the separating element 15 is positioned via fastenings 37 on the side plates.
  • knife elements 26 are fastened to the base body 24 . Viewed in the direction of drum rotation 17, two knife elements 26 are arranged one after the other, with a carding strip 21 being provided between the knife elements 26.
  • a plurality of blade elements 26 are also arranged over the working width.
  • the knife elements have several rows 35 of ejection openings 27 .
  • the edges of the ejection openings 27 opposing the direction of rotation 17 of the drum form a multiplicity of knife blades 28.
  • guide elements 36 are provided over the ejection openings 27 and thus also over the knife blades 28.
  • FIG 6 an even distribution of the ejection openings 27 is shown in one embodiment of a knife element 26 .
  • the ejection openings 27 with the edges formed into knife blades 28 pointing against the direction of rotation 17 of the drum are each designed with an identical length D, an identical width E and an identical spacing F.
  • the ejection openings 27 are designed, for example, as rectangles with rounded ends.
  • second embodiment of a knife element 26 are the rectangular ejection openings 27 with the against the drum rotation direction 17 pointing, edges formed into knife blades 28, arranged in rows transverse to the direction of rotation 17 of the drum.
  • the width E of the ejection openings 27 decreases from row to row in the direction of drum rotation 17, from a maximum width to a minimum width.
  • the length D of all ejection openings 27 and the spacing F of the ejection openings 27 in a row are the same.
  • the spacing of rows following one another in the direction of rotation 17 of the drum steadily decreases from a largest spacing to a smallest spacing in the working direction.
  • FIG 8 to Figure 11 show sectional views of various embodiments of knife elements 26 at a point X after figure 6 .
  • the ejection openings 27 are designed as through-openings in a metal sheet with a sheet thickness B and are spaced F apart from one another.
  • the knife element 26 is provided on its outer edge with a frame 38 to increase the dimensional stability.
  • the frame 38 is connected to the sheet metal to form the blade element 26 by means of a fastening, for example a screw connection.
  • the ejection openings 27 are designed as through-openings in a metal sheet with a sheet thickness B and are spaced F apart from one another.
  • the edges of the ejection openings 27 are rounded with a radius. The rounding of the edges of the ejection openings 27 facilitates the removal of the separated trash parts and short fibers and thus prevents blockages.
  • a knife element 26 with ejection openings 27 with a width E, the edges of which form the knife blades 27, is shown.
  • the ejection openings 27 are designed as through-openings in a metal sheet with a sheet thickness B and are spaced F apart from one another.
  • the blade element 26 is made from sheet metal with a large sheet metal thickness B, with the ejection openings 27 being cut out of the sheet metal. for example by laser cutting or milling. This enables the ejection openings 27 to be arranged obliquely at an angle ⁇ as they run through the metal sheet.
  • a knife element 26 with ejection openings 27 with a width E is shown.
  • the ejection openings 27 are designed as through-openings in a metal sheet with a sheet thickness B and are spaced F apart from one another.
  • the passage openings are designed as beads, with the outer edges of the beads representing the knife blades 28 .
  • the knife blades 28 protrude from the surface of the knife element 26 by an overhang G. This in turn leads to an increase in the rate of excretion.

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

Claims (14)

  1. Cardeuse destinée au traitement de fibres, comportant un tambour (3) comportant une périphérie de tambour, une surface de tambour (23) et une largeur de travail (A), des éléments de cardage (12) permettant le parallélisme des fibres et des éléments de séparation (13, 14, 15) permettant la séparation de salissures et de fibres courtes étant disposés en face de la surface de tambour (23) du tambour (3) pouvant tourner autour d'un axe de rotation (4) dans un sens de rotation (17) et les éléments de séparation (13, 14, 15) étant pourvus d'un canal d'aspiration (25), la périphérie de tambour étant divisée en une zone de pré-cardage (9), une zone de cardage principale (5), une zone de post-cardage (10) et une zone de sous-cardage (11), et les éléments de cardage (12) et les éléments de séparation (13, 14, 15) couvrant toute la largeur de travail (A), dans la zone de post-cardage (10), la zone de pré-cardage (9) ou la zone de sous-cardage (11), au moins l'un des éléments de séparation (13, 14, 15) étant pourvu d'un corps de base (24), d'un canal d'aspiration (25) et d'un élément de couteau (26), caractérisée en ce que l'élément de couteau (26) présente une pluralité d'ouvertures d'éjection (27) et des lames de couteau (28) associées aux ouvertures d'éjection (27), les ouvertures d'éjection (27) étant réparties régulièrement sur la largeur de travail (A) et disposées en rangées (35), et plusieurs rangées (35) d'ouvertures d'éjection (27) étant prévues successivement dans un élément de couteau (26), vues dans le sens de rotation (17) du tambour (3), et en ce qu'au moins un élément de guidage d'air (29) est disposé entre le canal d'aspiration (25) et l'élément de couteau (26).
  2. Cardeuse selon la revendication 1, caractérisée en ce que les éléments de guidage d'air (29) sont disposés inclinés à un angle d'inclinaison (α), vus dans le sens de rotation (17) du tambour (3), par rapport à l'élément de couteau (26).
  3. Cardeuse selon la revendication 1, caractérisée en ce que l'élément de guidage d'air (29) est disposé parallèlement à l'élément de couteau (26) au moins dans la région des ouvertures d'éjection (27) et un espace de transport (30) est réalisé entre l'élément de couteau (28) et l'élément de guidage d'air (29), l'espace de transport (30) étant relié au canal d'aspiration (25).
  4. Cardeuse selon l'une quelconque des revendications précédentes, caractérisée en ce que l'élément de séparation (13, 14, 15) a une longueur (C) de 50 mm à 400 mm, vu dans le sens de rotation (17) du tambour (3), et le côté de l'élément de séparation (13, 14, 15) opposé à la surface de tambour (23) est réalisé de manière concentrique par rapport à la surface de tambour (23).
  5. Cardeuse selon l'une quelconque des revendications précédentes, caractérisée en ce qu'au moins un canal d'amenée d'air (31) est prévu dans le corps de base (24), le canal d'amenée d'air (31) débouchant dans l'espace de transport (30) entre l'élément de couteau (26) et l'élément de guidage d'air (29).
  6. Cardeuse selon l'une quelconque des revendications précédentes, caractérisée en ce que l'élément de couteau (26) est formé à partir d'une tôle comportant une épaisseur de tôle (B) de 0,05 mm à 2,0 mm, les ouvertures d'éjection (27) étant ménagées dans la tôle et les lames de couteau (28) étant formées par des arêtes des ouvertures d'éjection (27).
  7. Cardeuse selon l'une quelconque des revendications précédentes, caractérisée en ce que les ouvertures d'éjection (27) de l'élément de couteau (26) présentent une longueur (D) de 5 mm à 200 mm, une largeur (E) de 2 mm à 15 mm et respectivement un espacement (F) de 0,1 mm à 20,0 mm.
  8. Cardeuse selon l'une quelconque des revendications précédentes, caractérisée en ce qu'au moins deux éléments de guidage (33) sont prévus au niveau de l'élément de couteau (26), les éléments de guidage (33) étant disposés sur un côté orienté vers la surface de tambour (23).
  9. Cardeuse selon l'une quelconque des revendications précédentes, caractérisée en ce que l'élément de couteau (26) est fixé de manière amovible au corps de base (24).
  10. Cardeuse selon l'une quelconque des revendications précédentes, caractérisée en ce que l'élément de couteau (26) est composé de plusieurs éléments partiels, les éléments partiels étant fixés individuellement au corps de base (24).
  11. Cardeuse selon l'une quelconque des revendications précédentes, caractérisée en ce que deux éléments de couteau (26) sont disposés côte à côte au niveau du corps de base (24) de l'élément de séparation (13, 14, 15), vus dans le sens de rotation (17) du tambour (3), les éléments de couteau (26) présentant des empreintes identiques à celles des ouvertures d'éjection (27) ou différentes de celles-ci.
  12. Cardeuse selon la revendication 11, caractérisée en ce qu'un canal d'aspiration (25) associé est prévu pour chaque élément de couteau (26).
  13. Cardeuse selon la revendication 11 ou 12, caractérisée en ce que, vu dans le sens de rotation (17) du tambour (3), une bande de cardage (21) ou un élément coulissant (22) est fixé au corps de base (24) entre les éléments de couteau (26).
  14. Cardeuse selon l'une quelconque des revendications précédentes, caractérisée en ce que, avant ou après l'élément de séparation (13, 14, 15), une ouverture d'amenée d'air (32) s'étendant sur la largeur de travail (A) est prévue, laquelle ouverture d'amenée d'air permet un échange d'air entre le tambour (3) et l'air ambiant.
EP20159680.6A 2019-03-19 2020-02-27 Carde Active EP3712306B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00344/19A CH715975A2 (de) 2019-03-19 2019-03-19 Karde mit Ausscheideelementen.

Publications (2)

Publication Number Publication Date
EP3712306A1 EP3712306A1 (fr) 2020-09-23
EP3712306B1 true EP3712306B1 (fr) 2023-06-07

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EP20159680.6A Active EP3712306B1 (fr) 2019-03-19 2020-02-27 Carde

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EP (1) EP3712306B1 (fr)
CN (1) CN111719203B (fr)
CH (1) CH715975A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH719953A1 (de) * 2022-08-10 2024-02-15 Rieter Ag Maschf Festdeckel für eine Karde.
CH719954A1 (de) 2022-08-10 2024-02-15 Rieter Ag Maschf Festdeckel für eine Karde.
CH719955A1 (de) 2022-08-10 2024-02-15 Rieter Ag Maschf Festdeckel für eine Karde.

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE920894C (de) * 1950-12-30 1954-12-02 Joseph Schmitt-Engasser Fasergutreinigungsvorrichtung fuer Karden und aehnliche Maschinen
DE2846109C3 (de) 1978-10-23 1982-02-25 Hollingsworth Gmbh, 7265 Neubulach Schmutzausscheider für Kardiervorrichtungen
DE3902204C2 (de) 1989-01-26 2003-04-30 Truetzschler Gmbh & Co Kg Vorrichtung an einer Karde, Reinigungsmaschine o. dgl. für Baumwollfasern, bei der einer Walze ein Tragelement zugeordnet ist
CN1022337C (zh) 1989-03-23 1993-10-06 里特机械公司 纤维网除尘器
DE9419619U1 (de) * 1994-12-08 1995-02-09 Chemnitzer Spinnereimaschinenbau GmbH, 09120 Chemnitz Deckelkarde mit auf Vorreißer und Tambour verteilt angeordnetem Kardiersystem
DE10110824A1 (de) * 2000-12-11 2002-06-13 Truetzschler Gmbh & Co Kg Vorrichtung an einer Karde, Reinigungsmaschine, Öffnungsmaschine o. dgl., für Fasermaterial, z. B. Baumwolle, Chemiefasern
DE10318968A1 (de) * 2003-04-26 2004-11-11 Trützschler GmbH & Co KG Vorrichtung an einer Karde, bei der einer Walze, z.B. Trommel, mindestens ein ortsfestes Kardiersegment aus einem Träger mit mindestens zwei Kardierelementen zugeordnet ist
WO2007033504A1 (fr) * 2005-09-26 2007-03-29 Maschinenfabrik Rieter Ag Dispositif pour le traitement de fibres sur le tambour d'une carde
ITBS20110073A1 (it) * 2011-05-20 2012-11-21 Marzoli Spa Macchina cardatrice di una linea di preparazione alla filatura

Also Published As

Publication number Publication date
EP3712306A1 (fr) 2020-09-23
CN111719203B (zh) 2023-04-28
CN111719203A (zh) 2020-09-29
CH715975A2 (de) 2020-09-30

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