EP3712307A1 - Élément avec lame pour une machine de traitement des fibres et élément de travail comprenant un élément avec lame - Google Patents

Élément avec lame pour une machine de traitement des fibres et élément de travail comprenant un élément avec lame Download PDF

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Publication number
EP3712307A1
EP3712307A1 EP20159678.0A EP20159678A EP3712307A1 EP 3712307 A1 EP3712307 A1 EP 3712307A1 EP 20159678 A EP20159678 A EP 20159678A EP 3712307 A1 EP3712307 A1 EP 3712307A1
Authority
EP
European Patent Office
Prior art keywords
knife
working
width
knife element
ejection 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.)
Granted
Application number
EP20159678.0A
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German (de)
English (en)
Other versions
EP3712307B1 (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.)
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
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Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP3712307A1 publication Critical patent/EP3712307A1/fr
Application granted granted Critical
Publication of EP3712307B1 publication Critical patent/EP3712307B1/fr
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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
    • 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
    • D01G9/00—Opening or cleaning fibres, e.g. scutching cotton
    • D01G9/14—Details of machines or apparatus
    • D01G9/20—Framework; Casings; Coverings; Grids

Definitions

  • the invention relates to a knife element for a working element of a fiber processing machine and a corresponding working element with a working width and a working direction running transversely to the working width.
  • the working element extends over the working width and has a base body.
  • a suction channel is arranged on the base body across the working width.
  • machines such as cleaners or cards which contain various work 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
  • the parts or short fibers are usually separated from the separating knife by a rotating roller, with the help of which the fiber material is transported.
  • an opening in the working element against the surface of the rotating roller and the fiber material transported on it is provided in front of the separating knife, which opening serves as an ejection opening for the parts separated from the fiber material by the separating knife.
  • the parts rejected by the ejector knife After the parts rejected by the ejector knife have passed the ejection opening, they are fed to a suction channel and conveyed away.
  • reject knives are used in cleaning machines or cards in spinning mill preparation.
  • the writing describes CH 639 434 A5 a dirt separator, which has a knife blade that is radially spaced from the drum of a card and serving as a knife element, as well as a collecting rail that is also radially spaced apart. A gap is left between the catch rail and the knife blade. The space delimited by the knife blade and the collecting rail is covered and forms a vacuum suction chamber.
  • Another cleaning element with a separating knife is disclosed in the document DE 39 02 204 A1 .
  • the ejection distance is determined by the distance between the knife blade and the upstream element.
  • the dirt separated through the ejection opening with the aid of the knife blade is guided along the knife blade to a suction channel.
  • a guide element is attached to the rear of the upstream element which can be swiveled 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, a carding element being arranged in front of the knife blade and a guide element being arranged behind it.
  • the disadvantage of the known devices is that the knife elements, due to their structure within the working elements with an upstream guide surface and a downstream carding surface for removing dirt and short fibers, take up a large part of the available peripheral surface of the rollers facing them. Due to the necessary size of the suction channel, a large space requirement arises for the use of a separating knife. As a result, only a limited number of removal knives is possible on the available circumference of a roller. This means that a correspondingly large separation opening or a large distance between the element in front of the knife blade and the surface of the opposite roller must be set in front of the separating knives or knife blades in order to achieve the required separation rate.
  • the object of the present invention is to propose a knife element, or a working element, which does not have the disadvantages of the known prior art and allows the number of knife blades to be increased and thus to better utilize the available circumference of a roller.
  • the object of the present invention is to enable a flexible configuration of the arrangement of the knife blades and thus to achieve an improvement in the separation with a lower loss of good fibers.
  • a new type of knife element for a working element of a fiber processing machine with a working width and a working direction running transversely to the working width.
  • the knife element has a plurality of knife blades pointing against the working direction and a plurality of ejection openings, one ejection opening being assigned to a knife blade and the ejection openings having a length in the direction of the working width and a width in the working direction.
  • the ejection openings of all knife blades of a knife element can be assigned 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 gently peeled off from the fiber fleece that is passed under the knife blades, whereby good fibers can be avoided.
  • the knife element is formed from a sheet metal, the ejection openings in the sheet metal being in the form of passage openings and the knife blades being formed by edges of the passage openings.
  • the passage openings and thus also the ejection openings and knife blades can be produced by a punching process known from the prior art. In the case of smaller knife elements, however, it is also conceivable to machine them out of thicker sheets of up to 40 mm.
  • By machining the ejection openings they can be arranged obliquely at an angle ⁇ of 10 to 80 degrees, particularly preferably 30 to 70 degrees, with respect to the sheet metal surface.
  • the sheet metal preferably has a thickness of 0.05 mm to 2.0 mm, particularly preferably 0.1 mm to 0.8 mm.
  • the thin sheet metal makes it possible to design knife elements which cover a larger section of a roll circumference, since the knife elements can be molded to the shape of the roll surface. It has been shown that a sheet thickness of 0.3 mm results in good deformability with sufficient stability.
  • the knife element comprises a frame in which the sheet metal is inserted.
  • Devices required for fastening the knife element or through holes required for a screw connection can be attached to the frame.
  • the knife element preferably has a frame. With this construction, a thin sheet metal thickness can be selected for the knife element even under high loads.
  • the knife element advantageously has a width of 30 mm to 500 mm and a length of 20 mm to 800 mm.
  • a length of the adapted to the working width Knife elements enables the knife elements to be introduced in modules. Different versions of knife elements can be provided over the course of the working width. The shorter the length of the knife elements is chosen, the smaller the sheet metal thickness can be chosen, which has manufacturing advantages for the execution of the edges of the ejection openings for the formation of the individual knife blades.
  • the knife element particularly preferably has a width of 40 mm to 150 mm and a length of 100 mm to 500 mm.
  • the passage openings which form the ejection openings can be provided as simple punched openings or with a radius of 0.1 mm to 2.0 mm, particularly preferably 0.3 mm to 1.0 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 fiber material leads to an improved removal of the separated parts into the suction channel. It is also conceivable to design the ejection openings as so-called beads. 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 0.1 mm to 2.0 mm, particularly preferably 0.3 mm to 1.0 mm, from the plane of the ejection openings and produce the effect of a previously used individual knife blade reaching into the fiber material.
  • the width of the knife elements is structurally adapted to their place of use. Experience has shown that the usual widths of working elements in the various spinning preparation machines vary widely, for example a width in working elements of cards of 32 mm is usual, whereas in cleaning machines widths are used which can correspond to up to a quarter of the roller circumference.
  • the ejection openings preferably have a length to width ratio of less than 20 to 1. So that the edge formed by the ejection opening, which is used as the knife blade, has an effect corresponding to an ejection knife, the longer edge of the ejection opening extends in the direction of the working width. It has been shown that square ejection openings with a corresponding edge length still meet the requirements. It is an advantage if the ejection openings have a length of 5 mm to 200 mm, preferably 10 mm to 30 mm, and a width of 2 mm to 15 mm, preferably 3 mm to 8 mm.
  • the ejection openings are also advantageously spaced from one another not more than 0.1 mm to 20.0 mm, preferably 0.5 mm to 5.0 mm, in the direction of the working width and in the working direction.
  • a close arrangement of large ejection openings has an effect on the stability of the knife element and may need to be compensated for by the choice of the size of the knife elements or an increased sheet metal thickness.
  • the ejection openings can be designed in various geometric shapes, with a rectangular shape or rectangular shape rounded at the ends being preferred. This results in correspondingly long knife blades in relation to the length of the ejection opening. However, trapezoidal or triangular ejection openings are also conceivable.
  • the width of successive ejection openings decreases in each case in the working direction.
  • the ejection openings are becoming increasingly narrow as seen in the working direction.
  • the excretion is smaller and the fiber guidance is better when viewed in the working direction.
  • the largest width is 2 mm to 20 mm, preferably 3 mm to 10 mm, and for the smallest width 0.1 mm to 12 mm, preferably 2.0 mm to 5.0 mm, a good compromise between fiber guidance and excretion result.
  • ejection openings arranged one behind the other, viewed in the working direction have an offset arranged 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 offset and narrowing ejection openings can be provided.
  • the compensation openings are provided to the side of the discharge openings and / or after the discharge openings, the compensation openings each having an area of less than 50% of the area of the smallest discharge opening in the knife element.
  • the compensation openings are used to create a flow compensation. By decoupling the flow passing the knife blades and the turbulence occurring in the edge areas of the knife element, it is possible to achieve a defined, uniform flow in the area of the knife blades and thus the ejection openings. This in turn contributes to a reduction in good fiber excretion and also prevents fibers from getting caught at the edges of the discharge openings and causing blockages.
  • the compensation openings can be designed in any shape, for example rectangular or circular.
  • the compensation openings can be arranged in rows or with an offset. It has proven useful, with a length of the knife element of 200 mm and a width of the knife element of 100 mm, one to two rows on each side of the knife blades and two rows of rectangular compensation openings with a respective area of the compensation openings of 30% of the area of the smallest ejection opening were used. For knife elements of different sizes and different designs and arrangements of the ejection openings, the ideal number, design and arrangement of the compensation openings must be determined by means of fluidic tests.
  • At least two guide rails are advantageously provided on the knife element in the working direction, the guide rails being guided over the entire width of the knife element.
  • the guide rails prevent the knife element from being brought too close to the opposite roller surface when it is used in a machine.
  • the guide rails consist of narrow sheet metal strips which are attached to the knife element by welding, soldering or gluing.
  • the guide rails are only a few tenths of a millimeter high so as not to hinder the elimination process.
  • the guide rails can be arranged straight, inclined, angled, bent or offset over their course along the working direction.
  • the guide rails can be made of the same material as the knife element or of plastic. Alternatively, the function of the guide rails can be fulfilled by a corresponding embossing of the knife elements.
  • Elevations for example in the form of knobs, are formed in the knife element between the ejection openings by a manufacturing process of the embossing, which prevent the knife element from being brought too close to the opposite roller surface when it is used in a machine.
  • the knobs can have any shape, such as triangular, round or square.
  • Other manufacturing processes as an alternative to embossing are also conceivable for creating the elevations, for example by applying weld points or other materials to the knife element.
  • a novel working element for a fiber-processing machine with a working width and a working direction running transversely to the working width is also proposed, the working element extending over the working width and having a base body.
  • a suction channel is arranged on the base body across the working width.
  • the working element is provided with at least one knife element as described above on a side facing away from the suction channel.
  • the knife element is held on the base body and has a multiplicity of knife blades and ejection openings between the knife blades or the knife blades and the base body.
  • the discharge openings are connected to the suction channel through the base body.
  • a suction channel is also not assigned to each ejection opening.
  • the ejection openings of all knife blades of a knife element are assigned to a single common suction channel.
  • the large number of knife blades also enables the trash particles to be gently peeled off from the fiber fleece that is passed under the knife blades, whereby good fibers can be avoided.
  • Knife blades can also be arranged in rows at a certain angle to the direction of the working width.
  • the knife element is preferably releasably attached to the base body.
  • the construction of the working element with a detachable knife element attached to it means that the knife setting can be adjusted by simply replacing the knife element and the difficult adjustment of the knife blades as known from the prior art is no longer necessary.
  • the knife 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 a change in 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 distance is to be set or the working element is to be limited to a small number of knife blades, this can be done by simply changing the knife element.
  • At least one air guide element is arranged between the suction channel and the knife element in the base body.
  • the air guide elements are arranged inclined at an angle ⁇ of 10 to 50 degrees to or against the knife element.
  • the inclination of the air guide elements must be adapted to the design of the suction channel.
  • An air guide element is assigned to each or every second ejection opening. This version is preferably used when the suction channel connects directly to the knife element.
  • the air guide element is arranged parallel to the knife element at least in the area of the ejection openings.
  • 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 working direction.
  • a passive air supply is preferably created in this transport space between the air guide element and the knife element, whereby an air flow is generated over the knife element in the working direction.
  • at least one supply air duct is provided in the base body, the supply air duct opening into the transport space between the knife element and the air guide element. The supply air duct enables a controlled, active supply of air into the transport space, for example through the use of compressed air.
  • FIG. 1 shows a schematic representation of a card 1 according to the prior art.
  • fiber material 2 arrives in a licker-in 3.
  • the fiber material 2 is opened by the rollers and working elements 12 contained in licker-in and at the same time freed from some of the impurities it contains.
  • the last lickerin of the lickerin 3 finally transfers the fiber material to the drum 4 of the card 1, which completely dissolves the fiber material into individual fibers, cleans and parallelises it.
  • the drum 4 works with revolving lids 5 and various working elements 12.
  • the drum 4 is moved in a direction of rotation 13 and leads the fibers from the lickerin 3 to the doffer 5.
  • the fibers are passed through a pre-carding zone 9, then past the revolving flats 5 and over a Post carding zone 10 promoted to the customer 6.
  • working elements 12 are used in the pre-carding zone 9 as well as the post-carding zone 10.
  • the working elements 12 used include carding elements for parallelizing the fibers and separating elements for separating trash parts and short fibers.
  • the fiber material viewed in the direction of rotation 13 of the drum 4, still passes through an undercarding zone 11. In the undercarding zone 11, separation elements are mostly not used today.
  • the fibers After the fibers have in some cases made several revolutions on the drum 4, they are removed from the drum 4 by a doffer 6 in the form of a nonwoven fabric and formed into a card sliver 8 with a sliver forming unit 7. The card sliver 8 is then placed in a can for further transport (not shown).
  • FIG. 2 shows a schematic representation of a first embodiment of a working element 12 according to the invention.
  • the working element 12 has a working width 31 and is formed from a base body 14 which, in the exemplary embodiment shown, is formed from two parts and joined together via a bracket.
  • the base body is shaped into a suction channel 15.
  • a knife element 16 is attached to the base body 14 below the suction channel 15.
  • the attachment of the knife element 16 to the base body 14 itself is not shown and can be formed in accordance with the known prior art by a releasable connection, for example screws, clips, or a permanent connection, for example welding, gluing.
  • Ejection openings 20 are provided in the knife element 16, which create a connection from the suction channel 15 to a surface of a roller which is opposite to the working element 12.
  • the edges of the ejection openings 20 opposing a working direction 30 are designed as knife blades 17. Seen in the working direction 30, several knife blades 17 and the ejection openings 20 assigned to each knife blade are arranged one behind the other. All ejection openings 20 are connected to the suction channel 15, which results in a large number of knife blades 17 with only one suction channel 15.
  • guide elements 23 are provided. The guide elements 23 are held inclined in the base body 14 at an angle ⁇ relative to the working direction 30.
  • FIG 3 shows a schematic representation of a second embodiment of a working element 12 according to the invention.
  • the working element 12 is compared to the execution according to Figure 2 shown with a much larger width F.
  • a suction channel 15 is attached to a base body 14.
  • the suction channel 15 is attached to one end of the working element 12 on the base body 14.
  • the contact surfaces between the base body 14 and the suction channel 15 are provided with a seal 26.
  • a knife element 16 is attached to the side of the base body 14 opposite the suction channel 15.
  • the knife element 16 has a shape that is curved in the working direction 30 in adaptation to a surface of a roller which is opposite in the operating state.
  • the knife element 16 is connected to the base element 14 via a support body 22.
  • a guide element 23 which is arranged over an effective width of the knife element 16 in such a way that a transport space 24 is formed along the knife element 16, viewed in the working direction.
  • the transport space 24 is connected to the suction channel 15 by the base body 14.
  • the transport space 24 is connected to the environment via an alternative connection 18 placed in the base body 14. Due to the arrangement shown, a negative pressure prevailing in the suction channel 15 causes an air flow from the alternative connection 18 along the knife element 16 in the working direction 30 through the transport space 24 to the suction channel 15. With the air flow, the trash parts and short fibers separated by the knife element 16 are transported into the suction channel 15 guided.
  • compressed air can additionally be introduced into the transport space 24 through a supply air duct 25.
  • the supply air duct 25 is arranged in such a way that the air flow generated by the negative pressure in the suction duct 15 is reinforced or supported in the transport space 24.
  • the base body 14 is designed such that the suction channel 15 from the in Figure 3 position shown in Opposite position seen in the working direction 30 can be offset above the alternative connection 18. The consequence of this is that the direction of the air flow in the transport space 24 is reversed relative to the working direction 30.
  • FIG 4 shows a view of a first embodiment of a knife element 16 according to the invention.
  • the knife element has a length A and a width F, the width F extending in the working direction 30.
  • the working direction 30 is given by the arrangement of the knife blades 17, which oppose the working direction 30.
  • the knife blades 17 are defined by the edges of the ejection openings 20 made in the knife element 16 in the form of passage openings.
  • the ejection openings 20 are arranged in several rows along the length A that are offset from one another over the width F.
  • the ejection opening in the entire knife element 16 has the same rectangular shape and size with a length C and a width D.
  • a spacing E is provided between the individual ejection openings 20. This is to be selected so that overall no weakening of the knife element 16 occurs through the ejection openings 20, so that the knife element 16 has sufficient dimensional stability.
  • the second embodiment of a knife element 16 shown is the rectangular ejection openings 20 with the edges formed to knife blades 17 lying in the working direction 30, also arranged in corresponding rows along the length A. There is no provision for an offset of the adjacent rows in the working direction 30.
  • the width of the ejection openings 20 in the working direction decreases from row to row over the width F of the knife element 16, from a greatest width D1 to a smallest width Dn.
  • the length C of all ejection openings 20 and the spacing E of the ejection openings 20 of a row are the same.
  • the spacing of rows following one another in the working direction 30 steadily decreases from a greatest distance E1 to a smallest distance En in the working direction.
  • a uniform distribution of the ejection openings 20 is shown in Figure 6 in a third embodiment of a knife element 16 with a length A and a width F.
  • the ejection openings 20 with the edges formed into knife blades 17 lying in the working direction 30 are each designed with identical lengths C, widths D and spacing E.
  • the ejection openings 20 are designed in their geometric shape, for example, as rectangles with rounded ends.
  • FIG 7 is a fourth embodiment of a knife element 16 based on the embodiment according to Figure 5 shown.
  • the ejection openings 20 with the edges formed into knife blades 17 lying in the working direction 30 are arranged in accordance with FIG Figure 5 intended.
  • the ejection openings 20 are only arranged in a central area of the knife element 16.
  • Compensating openings 19 are provided laterally in an edge region as seen in the working direction 30 and at the end of the knife element 16.
  • the compensation openings 19, which contribute to an improvement in the edge flows during operation of the knife element 16, are designed to be considerably smaller in size than the ejection openings 20.
  • the compensation openings 19 do not have the function of a separation, which is why their edges are not designed as knife blades.
  • the compensation openings 19 serve to balance the flow between an upper and a lower surface of the knife element 16, which faces the fiber material during operation Figure 7 are shown by way of example in the working direction over the width F one behind the other and over the length A two rows of compensation openings 19.
  • the distances between the compensation openings 19 as well as their geometric size is to be determined by flow tests and is also based on the location of the knife elements 16, for example the flow conditions on a roller in a cleaning machine differ significantly from a drum in a card.
  • a fifth embodiment of a knife element 16 with a length A and a width F a uniform distribution of the ejection openings 20 is shown.
  • the ejection openings 20 with the edges, which lie in the working direction 30 and are designed to form knife blades 17, are rectangular in shape with an identical size.
  • a left-hand half of the knife element 16 is an embodiment with guide rails 27 and a right-hand half of the knife element 16 is an embodiment with knobs 21.
  • the guide rails 27 consist of narrow and a few tenths of a millimeter thick sheet metal strips which are attached to the knife element 16 by welding, soldering or gluing.
  • the knobs are introduced into the knife element 16 by an embossing process.
  • the guide rails 27 as well as the knobs 21 represent a locally limited elevation and serve to prevent the knife element 16 from being brought too close to the surface of an opposing roller during use.
  • the surfaces of such rollers are often equipped with a large number of teeth or needles for transporting the fiber material.
  • the guide rails 27 or the knobs 21 come into contact with the teeth or needles before the knife blades 17 can be damaged by the teeth or needles.
  • FIG. 9 to Figure 12 show sectional views of various embodiments of knife elements 16 at point X after FIG Figure 8 .
  • a knife element 16 is shown with ejection openings 20 with a width D, the edges of which form the knife blades 17.
  • the ejection openings 20 are designed as passage openings in a sheet metal with the sheet thickness B and with a spacing E from one another.
  • the knife element 16 is provided on its outer edge with a frame 28 to increase the dimensional stability.
  • the frame 28 is connected with a fastening 29, for example with a screw connection, to the sheet metal to form the knife element 16.
  • a knife element 16 is shown with ejection openings 20 with a width D, the edges of which form the knife blades 17.
  • the ejection openings 20 are designed as passage openings in a sheet metal with the sheet thickness B and with a spacing E from one another.
  • the edges of the ejection openings 20 are rounded with a radius R. The rounding of the edges of the ejection openings 20 facilitates the removal of the trash and short fibers that have been separated out and thus prevents blockages.
  • a knife element 16 is shown with ejection openings 20 with a width D, the edges of which form the knife blades 17.
  • the ejection openings 20 are designed as passage openings in a sheet metal with the sheet thickness B and with a spacing E from one another.
  • the knife element 16 is made of sheet metal with a large sheet thickness B, the ejection openings 20 being cut out of the sheet metal, for example by laser cutting or milling. This enables the ejection openings 20 to be arranged obliquely in their course through the sheet metal at an angle ⁇ .
  • FIG 12 a knife element 16 with ejection openings 20 with a width D is shown.
  • the ejection openings 20 are designed as passage openings in a sheet metal with the sheet thickness B and with a spacing E from one another.
  • the passage openings are embodied as beads, the outer edges of the beads representing the knife blades 17.
  • the knife blades 17 protrude from the surface of the knife element 16 by a protrusion G. This in turn leads to an increase in the excretion rate.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP20159678.0A 2019-03-19 2020-02-27 Élément avec lame pour une machine de traitement des fibres et élément de travail comprenant un élément avec lame Active EP3712307B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00343/19A CH715974A1 (de) 2019-03-19 2019-03-19 Messerelement für eine faserverarbeitende Maschine.

Publications (2)

Publication Number Publication Date
EP3712307A1 true EP3712307A1 (fr) 2020-09-23
EP3712307B1 EP3712307B1 (fr) 2024-09-25

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EP20159678.0A Active EP3712307B1 (fr) 2019-03-19 2020-02-27 Élément avec lame pour une machine de traitement des fibres et élément de travail comprenant un élément avec lame

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EP (1) EP3712307B1 (fr)
CN (1) CN111719204B (fr)
CH (1) CH715974A1 (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.

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CH251624A (de) * 1943-04-23 1947-11-15 British Cotton Industry Resear Reinigungsvorrichtung an einer Karde.
DE920894C (de) * 1950-12-30 1954-12-02 Joseph Schmitt-Engasser Fasergutreinigungsvorrichtung fuer Karden und aehnliche Maschinen
CH639434A5 (de) 1978-10-23 1983-11-15 Hollingsworth Gmbh Schmutzausscheider fuer kardiervorrichtungen.
DE3902204A1 (de) 1989-01-26 1990-08-02 Truetzschler & Co Vorrichtung an einer karde, reinigungsmaschine o. dgl. fuer baumwollfasern, bei der einer walze ein tragelement zugeordnet ist
EP0388791A1 (fr) 1989-03-23 1990-09-26 Maschinenfabrik Rieter Ag Appareil pour éliminer des impuretés d'une toison de fibres
DE9419619U1 (de) * 1994-12-08 1995-02-09 Chemnitzer Spinnereimaschinenbau GmbH, 09120 Chemnitz Deckelkarde mit auf Vorreißer und Tambour verteilt angeordnetem Kardiersystem

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GB103014A (en) * 1916-01-29 1917-01-11 William Crossley Licker-in Grids used in Machines known as Carding Machines Employed in the Preparation of Cotton for Spinning.
DE420319C (de) * 1925-03-12 1925-10-22 Laroche & Fils Fa F Rost fuer Maschinen zum Reinigen von Textilgut
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CN111719204B (zh) 2023-06-06
CH715974A1 (de) 2020-09-30
EP3712307B1 (fr) 2024-09-25

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