EP3072999B1 - Dispositif de coupe de fibres discontinues - Google Patents

Dispositif de coupe de fibres discontinues Download PDF

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Publication number
EP3072999B1
EP3072999B1 EP16000155.8A EP16000155A EP3072999B1 EP 3072999 B1 EP3072999 B1 EP 3072999B1 EP 16000155 A EP16000155 A EP 16000155A EP 3072999 B1 EP3072999 B1 EP 3072999B1
Authority
EP
European Patent Office
Prior art keywords
cutting wheel
gripper
spindle
shaft
clamping device
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
EP16000155.8A
Other languages
German (de)
English (en)
Other versions
EP3072999A1 (fr
Inventor
Rolf Schröder
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.)
Oerlikon Textile GmbH and Co KG
Original Assignee
Oerlikon Textile 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 Oerlikon Textile GmbH and Co KG filed Critical Oerlikon Textile GmbH and Co KG
Publication of EP3072999A1 publication Critical patent/EP3072999A1/fr
Application granted granted Critical
Publication of EP3072999B1 publication Critical patent/EP3072999B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/38—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member

Definitions

  • the invention relates to a device for cutting staple fibers from a bundle of endless fiber strands, which are at least partially guided around a rotatable cutting wheel, wherein the cutting wheel has on its periphery a plurality of knives, which interact with a pressure or force loaded pressure element such in that the fiber strands are cut between the pressure element and the knives, wherein the cutting wheel is drivably coupled via a shaft to a drive.
  • the EP 0059234 B1 shows a fiber cutting device in which the cutting wheel is encapsulated by several components and only by manually loosening a plurality of screws and dowel pins, the cutting wheel can be removed.
  • the entire system must stand still, because at this time a possible intermediate storage can not absorb the continuously produced amount of continuous fibers.
  • it is expected that the time required to change the cutting wheel will be a maximum of 45 seconds.
  • the object of the present invention is to improve a device for cutting staple fibers to the effect that a reliable and quick change of the cutting wheel is possible to ensure a continuous further operation of the spinning-stretching plant.
  • the apparatus for cutting staple fibers from a bundle of endless fiber strands comprises at least one rotatable cutting wheel about which the fiber strands are at least partially passed, the cutting wheel having a plurality of knives on its circumference.
  • the knives cooperate with a pressure or force loaded pressure element such that the fiber strands are cut between the pressure element and the blades, wherein the cutting wheel is drivably coupled via a shaft with a drive.
  • the invention is characterized in that a spindle is arranged within the shaft, wherein the cutting wheel with the shaft via a releasable clamping device is connected, which is to be opened or closed by an axial movement of the spindle.
  • the axial movement of the spindle to close the clamping device via an energy storage via an energy storage.
  • the energy accumulator which may be formed in a preferred embodiment as a spring assembly, pulls the spindle in the axial direction upwards, whereby the clamping device is locked.
  • the axial movement of the spindle for opening the clamping device is pneumatically, hydraulically or by electric motor generated.
  • the spindle is connected to a pneumatic cylinder, which moves the spindle against the force of the energy accumulator in the axial direction, in this embodiment, to the cutting wheel. After switching off the pneumatic, hydraulic or electromotive force of the energy storage or the spring package pulls the spindle in the axial direction back up, whereby the clamping device is locked.
  • the clamping device comprises at least one gripper which connects the shaft with the cutting wheel directly or indirectly in the closed position.
  • the gripper leads almost synchronously with the spindle also an axial movement, over which the connection between the spindle and the cutting wheel is released or produced.
  • the gripper is preferably guided in a slide guide, wherein the gripper has a recess in the region of the inner diameter, which is closed in the upper closed position towards the cutting wheel. In a lower open position, the recess is opened towards the cutting wheel so that a shoulder of a tightening bolt connected to the cutting wheel is released.
  • the gripper has an outwardly directed shoulder in the form of a collar, which cooperates with the release of the tensioning device with a mushroom-shaped head of the tightening bolt and the sliding guide, and thus releases the tightening bolt.
  • the mushroom-shaped head provides for a positive opening of the gripper, so that the underside of the collar must slide along it.
  • the collar dips into a circumferential groove of the slide guide to give room for an increase in diameter.
  • the gripper would connect together with the backdrop the cutting wheel with the tightening bolt directly to each other as in a plug-in coupling.
  • FIG. 1 shows an embodiment of a cutting device 1 according to the invention for cutting staple fibers from a bundle of endless fiber strands.
  • a about the axis of rotation of a shaft 10 rotatable and driven by motor cylindrical cutting wheel 2 has on its periphery a plurality of blades 3, which point with their cutting in the direction of the outer periphery.
  • only two blades 3 of a total of about 50 or more knives are exemplified.
  • the distance of the knife edges on the outer circumference corresponds approximately to the future cut fiber length.
  • a drive 9 is arranged laterally on a housing 8 with which the cutting wheel 2 is set in rotary motion via the shaft 10.
  • a spindle 4 and a clamping device 20 is arranged, wherein at least the spindle 4 is movable in the axial direction.
  • the spindle 4 is surrounded by a spring assembly 7, which acts on the clamping device 20 with bias.
  • a pneumatic cylinder 6 is arranged, with which the spring assembly 7 can be pressed together. This has no contact with the spindle 4 with rotating shaft 10, so that the shaft 10 can rotate freely.
  • the gripper 23 is at least partially hollow cylindrical or formed as a tubular member with different internal shoulders and diameters and can its opening at its lower end face, which is assigned to the cutting wheel 2 is, zoom in or out.
  • the gripper 23 In order to mount the gripper 23 and so that it can enlarge or reduce its opening at the lower end face, it has been divided along its longitudinal axis into at least two elements. It may also be useful to divide the gripper 23 along its longitudinal axis into, for example, three or four elements.
  • the elements of the gripper 23 are separate components there, which together in a bore or guide (here a slide guide 22) mounted the gripper 23 form.
  • the gripper 23 cooperates with a cylindrical pin 21 which is releasably secured to the spindle 4 via a thread 4a.
  • the bolt 21 has an upper shoulder 21 a and a lower shoulder 21 b, which are formed as an increase in diameter of the cylindrical bolt 21.
  • the gripper 23 on a recess 23 a which is arranged as an increase in diameter of the inner diameter in the central region.
  • this recess 23a engages in the upper part of the lower shoulder 21b of the bolt 21 a.
  • the head 24a of a tightening bolt 24 engages.
  • the gripper 23 has at its lower end an outwardly directed shoulder 23b.
  • the multi-part gripper 23 is guided with its outer diameter by a sliding guide 22 and held together.
  • the slotted guide 22 is also as a tubular Component or socket formed and arranged in the shaft 10 and fixed.
  • the tensioning device 20 has the advantage that a secure locking of the cutting wheel 2 is always ensured by the spring assembly 7 without auxiliary power.
  • An unlocking of the clamping device 20 takes place by acting on the spring assembly 7 by the pneumatic cylinder 6, whereby the spring assembly 7 is compressed and the spindle 2 is lowered.
  • the upper shoulder 21a of the pin 21 presses the gripper 23 at its upper end face in the slide guide 20 down.
  • the gripper 23 opens due to its geometry despite weight load by the mushroom-shaped head 24a.
  • the recess 23a increases so far that the mushroom-shaped head 24a of the tightening bolt 24 fits through the resulting increase in diameter and the cutting wheel 2 is no longer held.
  • the relief of the spindle 2 with the compression of the spring assembly 7 causes in this embodiment, a vertical displacement of the cooperating components of about 10 mm.
  • the spring assembly 7 and the pneumatic cylinder 6 is to be adapted in the dimensioning.
  • the invention has the advantage that no auxiliary power for fixing the cutting wheel 2 is needed.
  • the fixing or loosening of the cutting wheel 2 by the clamping device 20 is effected only by a limited axial movement of the spindle 4, wherein the components of the clamping device 20, apart from the spring assembly 7, all form-fitting together. Only the spindle 4 is positively moved in the locked state upwards and held, wherein the adhesion is canceled by the pneumatic cylinder 6 for unlocking.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (10)

  1. Dispositif destiné à la coupe de fibres discontinues à partir d'un faisceau de brins de fibres sans fin qui sont au moins partiellement conduits autour d'une molette de coupe (2) rotative, la molette de coupe (2) présentant sur son pourtour une multiplicité de lames (3) qui coopèrent avec un élément de pression chargé par pression ou par force de telle sorte que les brins de fibres sont découpés entre l'élément de pression et les lames (3), la molette de coupe (2) étant, par le biais d'un arbre (10), couplée à un entraînement (9) de façon à pouvoir être entraînée, caractérisé en ce qu'une broche (4) est disposée à l'intérieur de l'arbre (10), la molette de coupe (2) étant raccordée à l'arbre (10) par le biais d'un dispositif de serrage (20) pouvant être desserré qui est destiné à être ouvert ou fermé par le biais d'un mouvement axial de la broche (4).
  2. Dispositif selon la revendication 1, caractérisé en ce que le mouvement axial de la broche (4) destiné à la fermeture du dispositif de serrage (20) s'effectue par le biais d'un accumulateur de force.
  3. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le mouvement axial de la broche (4) destiné à l'ouverture du dispositif de serrage (20) s'effectue de façon pneumatique, hydraulique ou électromotrice.
  4. Dispositif selon la revendication 2, caractérisé en ce que l'accumulateur de force est constitué en tant que paquet de ressorts (7).
  5. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le dispositif de serrage (20) comprend au moins un grappin (23) qui, dans la position fermée, raccorde de façon directe ou indirecte l'arbre (10) à la molette de coupe (2).
  6. Dispositif selon la revendication 5, caractérisé en ce que le grappin (23) est constitué au moins partiellement de façon cylindrique et creuse ou respectivement en tant que composant de forme tubulaire dont l'ouverture sur le côté frontal inférieur qui est affecté à la molette de coupe (2) peut être agrandie ou réduite.
  7. Dispositif selon la revendication 5 ou 6, caractérisé en ce que le grappin (23) peut être déplacé dans la direction axiale à l'intérieur d'un guidage à coulisse (22) .
  8. Dispositif selon les revendications 5 à 7, caractérisé en ce qu'un boulon (21) qui est raccordé à la broche (4) coopère avec le grappin (23).
  9. Dispositif selon l'une des revendications 5 à 8, caractérisé en ce que la molette de coupe (2) est raccordée à un boulon de serrage (24) avec une tête (24a) en forme de champignon qui coopère avec le grappin (23).
  10. Dispositif selon l'une des revendications 5 à 9, caractérisé en ce que le grappin (23) présente un gradin (23b) dirigé vers l'extérieur qui, lors du desserrement du dispositif de serrage (20), coopère avec le guidage à coulisse (22) et libère ainsi le boulon de serrage (24).
EP16000155.8A 2015-03-23 2016-01-22 Dispositif de coupe de fibres discontinues Active EP3072999B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015104330.0A DE102015104330B3 (de) 2015-03-23 2015-03-23 Vorrichtung zum Schneiden von Stapelfasern

Publications (2)

Publication Number Publication Date
EP3072999A1 EP3072999A1 (fr) 2016-09-28
EP3072999B1 true EP3072999B1 (fr) 2018-06-06

Family

ID=55262647

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16000155.8A Active EP3072999B1 (fr) 2015-03-23 2016-01-22 Dispositif de coupe de fibres discontinues

Country Status (3)

Country Link
EP (1) EP3072999B1 (fr)
CN (1) CN105986337B (fr)
DE (1) DE102015104330B3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108406886B (zh) * 2018-03-07 2024-05-24 段明辉 纤维切割装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH310779A (de) * 1953-01-14 1955-11-15 Maurer Sa Ing A Verfahren zum Schleifen eines Messers einer Faserbündelschneidemaschine und Einrichtung an einer Faserbündelschneidemaschine zur Ausführung des Verfahrens.
NL7415905A (nl) * 1974-12-06 1976-06-09 Akzo Nv Werkwijze en inrichting voor het snijden van vezels.
DE2745610C3 (de) * 1977-10-11 1980-07-10 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Stapelfaserschneidmaschine
DE3108096A1 (de) * 1981-03-04 1982-09-16 Neumünstersche Maschinen- und Apparatebau GmbH (Neumag), 2350 Neumünster Stapelfaserschneidmaschine
DE9100822U1 (de) * 1991-01-25 1992-02-27 Neumag - Neumünstersche Maschinen- und Anlagenbau GmbH, 2350 Neumünster Stapelfaserschneidmaschine
AT411364B (de) * 1999-07-27 2003-12-29 Chemiefaser Lenzing Ag Vorrichtung zur herstellung von viskosestapelfasern
US6758121B2 (en) * 2001-09-25 2004-07-06 Neumag Gmbh & Co. Kg Device for cutting a fiber cable
DE102005019263A1 (de) * 2005-04-26 2006-11-09 Saurer Gmbh & Co. Kg Faserkabel-Schneidvorrichtung
CN201386161Y (zh) * 2009-03-05 2010-01-20 江阴博伦化纤有限公司 涤纶纤维压切式切断机
CN104195677B (zh) * 2014-08-25 2016-08-17 东莞市碳索复合材料有限公司 纤维切断机

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DE102015104330B3 (de) 2016-07-21
EP3072999A1 (fr) 2016-09-28
CN105986337A (zh) 2016-10-05
CN105986337B (zh) 2018-04-24

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