EP2057309A1 - Convertisseur à buse rotative - Google Patents

Convertisseur à buse rotative

Info

Publication number
EP2057309A1
EP2057309A1 EP07723883A EP07723883A EP2057309A1 EP 2057309 A1 EP2057309 A1 EP 2057309A1 EP 07723883 A EP07723883 A EP 07723883A EP 07723883 A EP07723883 A EP 07723883A EP 2057309 A1 EP2057309 A1 EP 2057309A1
Authority
EP
European Patent Office
Prior art keywords
cutting edge
rotordusekonverter
cutting
yarn
rotor
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
EP07723883A
Other languages
German (de)
English (en)
Other versions
EP2057309B1 (fr
Inventor
Nils Schedukat
Richard Ramakers
Thomas Gries
Richard Brüssel
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.)
Schmidt und Heinzmann GmbH and Co KG
Original Assignee
Schmidt und Heinzmann GmbH and Co KG
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 Schmidt und Heinzmann GmbH and Co KG filed Critical Schmidt und Heinzmann GmbH and Co KG
Priority to EP11003356.0A priority Critical patent/EP2351880B1/fr
Publication of EP2057309A1 publication Critical patent/EP2057309A1/fr
Application granted granted Critical
Publication of EP2057309B1 publication Critical patent/EP2057309B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G1/00—Severing continuous filaments or long fibres, e.g. stapling
    • D01G1/02—Severing continuous filaments or long fibres, e.g. stapling to form staple fibres not delivered in strand form
    • D01G1/04—Severing continuous filaments or long fibres, e.g. stapling to form staple fibres not delivered in strand form by cutting

Definitions

  • the invention relates to a Rotordusekonverter for converting one or more Endlosgarn / s in staple fibers.
  • the invention is therefore in particular the object of providing a converter with which fibers or yarns can be optimally cut.
  • BESWIGUNGSKOPIE The object is achieved according to the invention by a Rotordusekonverter according to claim 1 and a converter according to claim 22, wherein further embodiments of the inventions claims 2 to 21 or 23 and 26 can be removed.
  • the invention relates to a Rotordusekonverter for converting one or more Endlosgarn / s in staple fibers by means of a Rotorduse and a cutting edge, the Dusenfunktion is integrated into the rotor and the yarn is deflected by an angle of less than 90 °. Under one
  • Cutting edge is to be understood here preferably a blade with at least one cutting edge.
  • the rotor casing sucks the fiber strand itself and prompts it by means of a supplied gas stream, preferably by means of air, at the same speed with which the endless yarn is fed, to a nozzle exit of the rotor.
  • a supplied gas stream preferably by means of air
  • the negative pressure in the catchment area and the transport by means of an air flow to the cutting the thread is advantageously aligned straight over the entire transport path.
  • the self-priming of the nozzle allows integration of the
  • Rotordusekonverters in an ongoing process for processing the staple fibers and reduces the air consumption of the converter to a separate arrangement of the nozzle and rotor.
  • a so-called in-circuit is important to ensure the purity of the material and to avoid yarn damage by winding, Nachk ⁇ stallisation, storage and transport.
  • the process becomes more productive by combining individual stages. Thereby a higher process speed and the saving of costs are possible.
  • deflecting the yarn at an angle of less than 90 ° all fiber types can be processed. The deflection of the yarn causes the yarn to exit at an outer edge of the rotor casing, causing the yarn to be moved and cut at an increased speed.
  • a second cutting edge is provided.
  • this acts as a counter-blade to the first cutting edge.
  • the design allows separation of fibers of soft and tough nature, since the two cutting edges develop sufficient force to cut tough fibers as well, with the second cutting edge applying a counter pressure to the pressure developed by the first cutting edge.
  • the second cutting edge is rotatably supported. Due to the rotation of the second cutting edge, the two cutting edges are not in constant contact. As a result, the generation of heat is avoided because the two edges touch only once per revolution of the rotor.
  • the second cutting edge is fixed to the rotor. This allows a simple construction of the converter, as can be dispensed with a separate storage of the second Schnei ⁇ de.
  • the second cutting edge may be an attachment plate, which is applied to a surface of the Rotordusekonverters, preferably an end face of the Rotordusekonverters, in which at least one Aust ⁇ ttso réelle of the yarn is applied to the entire extent and at least one recess which releases the Auserieso réelle and the formed like a blade at its edges. It is proposed that the second cutting edge overlap in a segmented manner an end face of the rotor nozzle.
  • the side of the rotor shaft is defined as the end face on which the exit opening of the endless yarn is arranged.
  • Segment-like in this context means that the second edge covers only a portion of the face of the Rotordusekonverters and remain free large parts of the total area.
  • the second cutting edge is designed as a sheet metal part which is bevelled like a blade on the side facing the exit opening of the yarn. In addition, this sheet metal part is easy and inexpensive to produce or replace.
  • a cutting edge of the second cutting edge forms a secant to an exit opening of the yarn.
  • the cutting edge of the second cutting edge is arranged on one side of the exit opening of the yarn, which, in one embodiment of a cut, viewed in a projection view, lies opposite the side on which the first cutting edge is arranged. This ensures a consistent and good cut quality.
  • At least one cutting edge of the first cutting edge and at least one cutting edge of the second cutting edge lie in a common plane in at least one operating mode, whereby the cut of the yarn can be carried out correctly and with ⁇ m precision.
  • a high power development for cutting the yarn can be achieved if, in at least one operating mode, the first cutting edge and the second cutting edge are biased against each other are.
  • the operating mode preferably represents a cutting operation.
  • At least one cutting edge of the first cutting edge and at least one cutting edge of the second cutting edge have a tilt relative to one another, which is intended to set a force component between the cutting edges during a cutting operation by means of the cutting edges.
  • a voltage can be built up between the cutting edges and / or a change in a force component or a voltage during a cutting process can be achieved.
  • By tilting an optimal and at the same time gentle cutting result can be achieved.
  • a stepless force change is achieved during a movement along the cutting edges in the cutting process, through which the fiber is handled without damage in a filing process.
  • vibrations of the cutting edges, caused by a meeting of the cutting edges in the cutting process can be reduced.
  • an insertion chute may be provided, which is arranged in at least one region of a cutting edge and lies on one side, which faces the other cutting edge.
  • At least one cutting edge has a formation which is provided to set a force component between the cutting edges during a cutting operation by means of the cutting edges.
  • This formation is intended in particular a curvature formed in the longitudinal direction of the cutting edge be, which causes the same effect and the same advantages as the tilt.
  • first cutting edge and the second cutting edge are intended to execute a cut of the yarn according to a scissor principle.
  • scissor principle should be understood here that the two Schnei ⁇ immediately before the cut berüh ⁇ ren in a cutting point in a process of cutting and thus at a past one another sliding of the cutting along the
  • the two cutting work on the principle of a cutting shear, whereby a large power development can be ensured for cutting the yarn.
  • an adjusting device for adjusting at least one cutting edge is provided.
  • both blades can be matched exactly.
  • the cutting edges must be aligned exactly 1 ⁇ m.
  • the adjustment device has a partial region provided for elastic deformation, whereby a femoral adjustment of a cutting edge arrangement can be achieved in a structurally simple manner.
  • a collecting device for the staple fibers is provided, wherein the collecting device has a box and a mouth opening in the box.
  • the box can also by another, the skilled person useful as catcher, such as a shaft, to be replaced.
  • This embodiment makes it possible for the cut or severed fibers to pass directly into the resulting fleece or fiber bed without impurities.
  • the shaft surround the cutting edges. Hereby, flying away of the cut fibers is effectively prevented, whereby the shaft acts as a nozzle.
  • the collecting device has a Absaugungsem ⁇ chtung to accelerate the emergence of a nonwoven or fiber bed and to optimize overall.
  • the collecting device has a separating device which separates the blown and cut fibers from the air.
  • a preferred development is that a device is provided which has a plurality of rotor-type converters. As a result, a high throughput rate of cut staple fibers can advantageously be achieved.
  • An inexpensive device can advantageously be achieved if a drive is provided, which drives the Rotordu ⁇ sekonverter at least partially.
  • the drive is a wrap-around strap with a wrap-around belt which has teeth on both sides.
  • This can be constructively simple and inexpensive, a synchronous ar- be made processing device.
  • the looping element can be designed as a wedge, flat or round belt, as a chain and / or particularly advantageously as a toothed belt.
  • another wrap-around drive which appears to the person skilled in the art to be useful.
  • a converter for converting one or more continuous yarns into staple fibers having a yarn exit and a cutting edge, wherein the yarn exit is stationary and the yarn exit
  • Cutting edge is rotatably mounted. This results in an arrangement that is structurally easy to drive, since only one component of the converter must be moved.
  • the converter has a second
  • the second cutting edge is fixedly mounted and acts as a counter-cutting edge to the first cutting edge. As a result, a constant contact of the cutting and thus the formation of heat can be avoided.
  • FIG. 1 shows a rotor-type converter in a front view with a fixed cutting edge and a rotating counter-blade
  • FIG. 2 shows a rotor-type converter according to FIG. 1 as a sectional illustration A-A
  • FIG. 4 shows an adjusting device for the cutting edges
  • FIG. 5 shows a collecting device for the staple fibers in a schematic representation with a box and a shaft opening into the box;
  • Fig. 6 shows a device with a plurality of Rotordusekonvertern
  • Fig. 7 shows a converter with a plurality of fixed fiber outlets and a rotatably mounted cutting edge and
  • Fig. 8 is a schematic representation of a tilt and a shape of the cutting.
  • Figures 1 to 3 show a rotor-type converter 10 for converting a yarn 12 into staple fibers. It can be mixed both several yarn or Faserstrange and different yarn or fiber types.
  • the rotor-type converter 10 comprises a rotor casing 14, 16, which has a rotor 14. has.
  • the rotor 14 is rotatably mounted in at least one bearing 50 and can be set in rotation by a drive 52. In the present exemplary embodiment, it is preferably a belt drive, wherein in FIGS. 2 and 3 only the belt guide 52 is shown. However, it can also be any further drive that appears appropriate to a person skilled in the art.
  • the rotor 14 has a channel 54 for the passage of the yarn 12.
  • a supply tube 86 is provided for the yarn 12, which is fixed, that is not co-rotated with the rotor 14.
  • the yarn 12 is deflected as shown in FIG. 3 in the rotor 14 by an angle of less than 90 °.
  • the nozzle function is integrated into the rotor 14, with a nozzle unit 16 serving to fulfill the nozzle function.
  • the nozzle unit 16 is arranged in the channel 54 of the rotor 14.
  • the nozzle unit 16 is preferably supplied with compressed air via a sealed circulation gap 56. Cooling can be achieved via the air flow and / or the moisture in the converter 10 and thus the cutting properties of the yarn 12 can be regulated.
  • a cutting edge 18 is mounted fixedly in front of the rotor 14 or in front of an end face 26 of the rotor via a holder 58 described in more detail below.
  • a second cutting edge 20 is provided which acts as a counter-blade to the first cutting edge 18.
  • the second cutting edge 20 is rotatably mounted.
  • the cutting edge 20 is fastened to the rotor 14 and rotates in the direction of rotation 90 with the rotor 14.
  • the second cutting edge 20 at another construction is rotatably mounted part.
  • the cutting edges 18, 20 are preferably made of steel, hard metal, ceramic or a hybrid material of, for example, any mixture of the aforementioned materials.
  • the cutting edges 18, 20 can additionally be a coating, for example made of one
  • Carbon compound such as diamond.
  • a laser in particular a diode laser, as a cutting edge is conceivable.
  • the second cutting edge 20 is arranged above a discharge opening 22 of the yarn 12 located in the end face 26, wherein the discharge opening 22 can have any desired distance from the axis of rotation of the rotor.
  • the first, fixed cutting edge 18 is arranged in front of the rotor 14 in such a way that after each complete rotation of the rotor 14, the cutting edges 18, 20 are aligned at a distance which is precisely adjusted with respect to the ⁇ m.
  • fed yarn 12 is introduced through the Dusenech 16 in the channel 54 of the rotor 14.
  • the yarn 12 is passed in the channel 54 to the exit port 22 and the open yarn end is expelled from the exit port 22.
  • the co-rotating second cutting edge 20 passes through the stationary first cutting edge 18, the yarn 12, during rotation, being drawn between the cutting edges 18, 20 and being cut.
  • the two cutting edges 18, 20 function like a pair of scissors, in particular like a pair of cutting shears. Through the rotation of second cutting edge 20, the two cutting edges 18, 20 must always meet again. In order to allow a cut of the yarn 12, the cutting edges 18, 20 are arranged in two different planes, which run parallel to each other. As a limiting case, it would also be possible for the cutting edges 18, 20 to be arranged in the same plane.
  • the acting as scissors cutting edges 60, 62 of the cutting 18, 20 are at the time of meeting and the execution of the cut in a plane.
  • the cutting edges 18, 20 or the cutting edges 60, 62 at the time of the cut always have only one contact point with one another, which occurs during the process of cutting and thus when the cutting edges 18, 20 slide along the longitudinal extent of the cutting edges 60 , 62 moves.
  • an adjusting means 92 for the cutting 18, 20 is provided, wherein the adjusting means 92 for aligning the cutting edges 18, 20 is used. It is arranged, for example, on the holder 58 of the second cutting edge 18.
  • a tilting and / or a bias of the blades 18, 20 can be adjusted.
  • FIG. 8 shows a schematic illustration of the tilt by way of example with reference to the second cutting edge 20.
  • the cutting edges 18, 20 are adjusted such that both cutting edges 18, 20 are in each case offset by the longitudinal extent of their cutting edges 60, 62 extending axis 98 are rotated with the same direction of rotation.
  • the cutting edges 60, 62 only touch one another at a point which moves along the cutting edges 60, 62 in the cutting process.
  • at least one cutting edge 20 is tilted in a further axis 100 with a tilting 94.
  • the cutting edge 20 can be rotated in a center 102 on its support surface.
  • a bias voltage is provided which increases the tension between the cutting edges 18, 20 and thus improves the cutting quality.
  • a formation 96 in the form of a curvature can also be provided on at least one cutting edge 20.
  • FIG. 4 shows an adjusting device 24, in which the rotor 14 of the rotor casing 14, 16 is at least partially surrounded by a stationary component 64, which receives the holder 58 for the first cutting edge 18.
  • the holder 58 has a connecting element 66, to which the first cutting edge 18 is fastened by means of an adjusting element 70 which is displaceable essentially in the direction of a transverse axis 68.
  • the connecting element 66 has a slope or slope 72 extending from the adjusting element 70 to the cutting edge 18 of less than 4 °, preferably 2 °.
  • a spring element preferably a plate spring 76 or a package of disc springs 76, vorge see that together with a, provided on the recess 74 recess 78, which reduces a portion 88 of a connecting element to one third of its width to about 11 mm, an elastic partial deformation of the dacasele- element 66 allows.
  • a coarse adjustment of the cutters 18, 20 can be achieved.
  • a displacement of 3 mm corresponds approximately to a change in a gap 80 between the cutting edges 60, 62 in its horizontal extension of 100 ⁇ m.
  • the adjusting element 70 is fixed.
  • the plate spring 76 is used, whereby a kerf can be adjusted to a fiber thickness of a fiber strand.
  • the gap 80 is adapted in its vertical extent via the deformation of the partially elastic connecting element 66. In this case, for example, the gap 80 can be changed by 1 ⁇ m when the spring 76 is adjusted by 15 °.
  • the fibers should be used for the direct production of a nonwoven or a fiber bed.
  • the cut or severed fibers should fall directly onto the resulting fleece or fiber bed.
  • a catching device 28 which comprises a box 30 and a shaft 32 opening into the box 30, wherein the Box 30 and the shaft 32 can be carried out einstuckig.
  • the shaft 32 surrounds the blades 18, 20 and thus prevents blowing away of the cut fibers.
  • the collecting device 28 has a suction device 34.
  • the suction device 34 can intervene, for example, by applying a vacuum.
  • a separator is provided in the form of at least one baffle 36 which separates air and fibers from each other.
  • a device with a plurality of rotor-type converters 10 is also conceivable, in which case only one rotor-driver converter per row is provided with a reference number.
  • the Rotordusekonverter 10 can rotate in opposite directions 82, 84, so that untwisting of a "twisted” or "twisted” fiber strand is possible.
  • the device preferably has a common drive 38, which drives a part or all the rotor-type converters 10.
  • the rotor-electric converters 10 can, for example, according to FIG.
  • the Rotordusekonverter 10 serves not only to convert the continuous yarns in staple fibers, but also for dosing the amount of fiber per unit of time and / or the desired length of the pieces of fiber.
  • the length adjustment can be set by means of the feed rate of the yarn 12 and / or the rotational speed of the rotor 14, wherein stepless metering is also possible.
  • Fig. 7 shows a converter 40 for converting one or more Endlosgarn / s in staple fibers with a Garng. Fiber exit 44 and a cutting edge 46, wherein the yarn exit 44 fixed and the cutting edge 46 is rotatably mounted.
  • a plurality of yarn outlets 44 are arranged around a rotatably mounted cutting edge 46, so that the cutting edge 46 cuts a plurality of fibers in one revolution.
  • a second cutting edge 48 may be provided in particular for cutting viscous fibers.
  • the second cutting edge 48 is fixedly mounted and acts as a counter-blade to the first cutting edge 46.

Landscapes

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

Abstract

L'invention concerne un convertisseur (10) à buse rotative pour convertir un ou plusieurs filaments sans fin (12) en fibres coupées au moyen d'une buse rotative (14, 16) et d'une lame de coupe (18). La fonction de buse est intégrée dans le rotor (14), et le filament est dévié d'un angle inférieur à 90°.
EP07723883A 2006-08-29 2007-04-02 Convertisseur à buse rotative Not-in-force EP2057309B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11003356.0A EP2351880B1 (fr) 2006-08-29 2007-04-02 Convertisseur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006040285 2006-08-29
PCT/EP2007/002942 WO2008025382A1 (fr) 2006-08-29 2007-04-02 Convertisseur à buse rotative

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP11003356.0A Division-Into EP2351880B1 (fr) 2006-08-29 2007-04-02 Convertisseur

Publications (2)

Publication Number Publication Date
EP2057309A1 true EP2057309A1 (fr) 2009-05-13
EP2057309B1 EP2057309B1 (fr) 2012-10-10

Family

ID=38541969

Family Applications (2)

Application Number Title Priority Date Filing Date
EP07723883A Not-in-force EP2057309B1 (fr) 2006-08-29 2007-04-02 Convertisseur à buse rotative
EP11003356.0A Not-in-force EP2351880B1 (fr) 2006-08-29 2007-04-02 Convertisseur

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP11003356.0A Not-in-force EP2351880B1 (fr) 2006-08-29 2007-04-02 Convertisseur

Country Status (4)

Country Link
EP (2) EP2057309B1 (fr)
DE (1) DE202007019280U1 (fr)
ES (1) ES2401637T3 (fr)
WO (1) WO2008025382A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010045702A1 (de) * 2010-09-16 2012-03-22 Schmidt & Heinzmann Gmbh & Co. Kg Faserschneidvorrichtung
EP2727694B1 (fr) 2012-11-05 2015-01-28 Toho Tenax Europe GmbH Dispositif de dépôt pour le dépôt dirigé de faisceaux de fibres de renforcement
PL2727693T3 (pl) 2012-11-05 2015-05-29 Toho Tenax Europe Gmbh Sposób wytwarzania tabletek z włókien

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE674105C (de) * 1935-07-07 1939-04-05 Emil Blaschke Vorrichtung zum Schneiden endloser kuenstlicher Faserbaender
US2173789A (en) * 1935-12-05 1939-09-19 Nikles Paul Method of producing stapled fibers
GB641262A (en) * 1946-09-07 1950-08-09 American Viscose Corp Improvements in and relating to devices for stapling continuous fiber
US2607418A (en) * 1951-04-10 1952-08-19 Du Pont Staple cutter
US3119294A (en) * 1960-09-01 1964-01-28 Du Pont Cutting apparatus with adjustable blade means

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008025382A1 *

Also Published As

Publication number Publication date
EP2351880A2 (fr) 2011-08-03
ES2401637T3 (es) 2013-04-23
EP2351880B1 (fr) 2013-07-03
WO2008025382A1 (fr) 2008-03-06
DE202007019280U1 (de) 2011-11-28
EP2351880A3 (fr) 2012-04-18
EP2057309B1 (fr) 2012-10-10

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