EP0768400B1 - Dispositif pour étirer des voiles fibreux de préférence orientés latéralement - Google Patents

Dispositif pour étirer des voiles fibreux de préférence orientés latéralement Download PDF

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Publication number
EP0768400B1
EP0768400B1 EP96115624A EP96115624A EP0768400B1 EP 0768400 B1 EP0768400 B1 EP 0768400B1 EP 96115624 A EP96115624 A EP 96115624A EP 96115624 A EP96115624 A EP 96115624A EP 0768400 B1 EP0768400 B1 EP 0768400B1
Authority
EP
European Patent Office
Prior art keywords
drafting
rollers
roller
drafting rollers
saw
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.)
Expired - Lifetime
Application number
EP96115624A
Other languages
German (de)
English (en)
Other versions
EP0768400A1 (fr
Inventor
Siegfried Bernhardt
Frank Kieras
Dietrich Menzel
Heinz-Werner Naumann-Burghardt
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.)
Spinnbau GmbH
Original Assignee
Spinnbau GmbH
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 Spinnbau GmbH filed Critical Spinnbau GmbH
Publication of EP0768400A1 publication Critical patent/EP0768400A1/fr
Application granted granted Critical
Publication of EP0768400B1 publication Critical patent/EP0768400B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/22—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by rollers only
    • D01H5/24—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by rollers only with porcupines or like pinned rotary members

Definitions

  • the invention relates to a device for Warping of preferably cross-oriented incoming Non-woven fabrics.
  • Such a device is known from DE 32 45 517 C2.
  • a plurality of pairs or trios of drafting rollers with increasing peripheral speed in the direction of flow arranged, with at least two cooperating drafting rollers that are immediately before the last group interacting in the direction of flow Distortion rollers are located and on clothing-free Follow drafting rollers, covered with a saw tooth set are.
  • the inlet side and the outlet side Distortion rollers are free of clothing.
  • Due to the in Direction increasing peripheral speed of the Draft roller pairs or trios are partially Longitudinal orientation of the fibers, the sawtooth sets ensure that this is not only on the fleece surface, but also happens in the middle of the fleece.
  • the fleece has an optimal ratio the longitudinal strength to the transverse strength. Indeed it has been found that the nonwoven jumps in more at the edges, up to 15% of the original fleece width.
  • the invention is therefore based on the object Specify device of the generic type, the one Warp in the longitudinal direction without a significant reduction in width enables.
  • the fleece experiences at the end or shortly before, a treatment with a special set, the opposite in both halves acts on the fleece.
  • the reduction in width of the finished Fleece is less than 5%, for example 3%.
  • the special set also exercises Longitudinal forces on the fleece to a to cause partial longitudinal orientation of the fibers.
  • the fleece through the Saw tooth set is processed intensively therefore a route in which mainly the superficial Fibers are processed. This leads to Surface layers with a higher degree of longitudinal orientation, so that the width side for width correction applied transverse forces to be fully effective can.
  • At least one of the Drafting rollers is assigned a pressure roller whose Distance to the associated drafting roller and its position adjustable with respect to the nip of this warping roller is.
  • a draft roller 1 is illustrated, the carries a sawtooth set 2. It consists of one A large number of tips 3 projecting outwards narrow bands 4, along the helical lines 5 the surface 6 of the roller are arranged.
  • the peculiarity is that the screw lines 5 on half of the roller opposite the helical lines 5 'on the other half of the roller an opposite Have pitch angles. Surrender therefore separated by the level 7 roll halves are mirror images of each other.
  • the pitch angle is between 30 and 60 °, preferably 45 °.
  • the term "saw tooth set” does not only cover one Set with pronounced saw teeth, but also one those that have needle-like tips or the like. having.
  • the number of screw lines 5 and 5 ' is essential in practice larger than shown in the drawing is. In operation, the point at which the sawtooth trimmings point hit both halves, in the direction of rotation forward, as indicated by arrow 8.
  • a nonwoven fabric is used, that is oriented across a treadmill 10 fed.
  • the peripheral speed the drafting rollers of these trios take from the infeed side towards the outlet side.
  • Trios 11, 13 and 14 are formed by drafting rollers 17, which are not Wear clothing.
  • the one near the inlet side and only separated by the trio 11 trio 12 is composed of drafting rollers 18, one have normal sawtooth set 19 with tips that are arranged along helical lines, which have the same Pitch angle over the entire length of the roller extend.
  • the slope angle of the continuous Helical lines are between 10 and 30 °, preferably at 20 °.
  • the drafting rollers 1 of the trio 15 are with the special sawtooth set 2, as shown in Fig.
  • the fleece fed via infeed belt 10 experiences in the Trio 11 first partially on its surface Longitudinal orientation of the mainly transverse fibers.
  • Trio 12 located near the inlet side this treatment is carried out to the depth of the fleece inside.
  • Trios 13 and 14 in turn get one Longitudinal orientation of near-surface fibers.
  • the outlet side arranged trio 15 finally cares the longitudinal distortion for a width extension. This will supported by the fact that the surface of the fleece due to trios 13 and 14 a higher degree of longitudinally oriented Fibers and therefore from the tips 3 exerted lateral forces can be absorbed well.
  • Fig. 4 are for corresponding Parts used with reference numbers increased by 200.
  • trios 112 and 115 by pairs of rollers 212 and 215 have been replaced.
  • the pair of rollers 114 come to an end and on the outlet side another pair of rollers 221 without saw tooth set were added, but with the special sawtooth set provided drafting rollers 1 of the pair of rollers 215 are still close to the spout.

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

Claims (4)

  1. Dispositif d'étirage de non-tissés fibreux arrivant en étant de préférence orientés transversalement, dans le cas duquel une pluralité de couples (111, 113, 114 ; 211, 212, 213, 215, 221) ou de trios (11 à 15 ; 112, 115 ; 311 à 315, 322) de cylindres d'étirage, dont la vitesse circonférentielle augmente dans le sens du passage, sont disposés entre une entrée et une sortie, au moins deux cylindres d'étirage (1) agissant conjointement, qui sont situés directement à la sortie ou directement en amont dans le sens du passage du dernier groupe de cylindres d'étirage agissant conjointement, et qui font suite à des cylindres d'étirage sans garnitures, étant enrobés d'une garniture (2) en dents de scie, et les garnitures (2) en dents de scie s'étendant respectivement suivant une ligne hélicoïdale sur les deux moitiés de cylindre, mais avec un angle d'inclinaison inversé.
  2. Dispositif selon la revendication 1, caractérisé en ce que l'inversion de l'angle d'inclinaison est effectuée légèrement en dehors du milieu des cylindres.
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que d'autres garnitures (19) en dents de scie sont prévues sur des cylindres d'étirage (18) situés directement au niveau de l'entrée, ou directement dans le sens du passage après le premier groupe de cylindres d'étirage agissant conjointement, et s'étendent suivant une ligne hélicoïdale avec le même angle d'inclinaison sur l'ensemble de la longueur des cylindres.
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce qu'un cylindre de pression (20) est associé à l'un au moins des cylindres d'étirage (1, 17, 18), dont la distance par rapport au cylindre d'étirage associé et la position en ce qui concerne le point de serrage de ce cylindre d'étirage sont réglables.
EP96115624A 1995-10-09 1996-09-28 Dispositif pour étirer des voiles fibreux de préférence orientés latéralement Expired - Lifetime EP0768400B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19537580A DE19537580C2 (de) 1995-10-09 1995-10-09 Vorrichtung zum Verziehen von überwiegend querorientiert einlaufenden Faservliesen
DE19537580 1995-10-09

Publications (2)

Publication Number Publication Date
EP0768400A1 EP0768400A1 (fr) 1997-04-16
EP0768400B1 true EP0768400B1 (fr) 1999-04-07

Family

ID=7774399

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96115624A Expired - Lifetime EP0768400B1 (fr) 1995-10-09 1996-09-28 Dispositif pour étirer des voiles fibreux de préférence orientés latéralement

Country Status (3)

Country Link
EP (1) EP0768400B1 (fr)
DE (2) DE19537580C2 (fr)
ES (1) ES2130730T3 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3611507A (en) * 1968-08-22 1971-10-12 Kanegafuchi Spinning Co Ltd Production of worsted tops
ES385298A1 (es) * 1970-11-06 1973-08-16 Lorenzo Garcia Perfeccionamientos en la construccion de maquinas para el estirado de fibras textiles artificiales.
JPS57154421A (en) * 1981-03-12 1982-09-24 Takehisa Kato Drafting apparatus in spinning frame
US4566162A (en) * 1982-10-26 1986-01-28 American Roller Company Stretcher/expander roller
DE3245517C2 (de) * 1982-12-09 1985-11-14 Spinnbau GmbH, 2820 Bremen Vorrichtung zum Verziehen von querorientiert einlaufenden Faservliesen
DE3839473A1 (de) * 1988-11-23 1990-05-31 Krantz H Gmbh & Co Walze zum fuehren einer warenbahn

Also Published As

Publication number Publication date
EP0768400A1 (fr) 1997-04-16
DE59601598D1 (de) 1999-05-12
DE19537580A1 (de) 1997-04-10
ES2130730T3 (es) 1999-07-01
DE19537580C2 (de) 1997-09-04

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