EP0531680A1 - Dispositif d'introduction d'une nappe fibreuse dans une aiguilleteuse - Google Patents

Dispositif d'introduction d'une nappe fibreuse dans une aiguilleteuse Download PDF

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Publication number
EP0531680A1
EP0531680A1 EP92112603A EP92112603A EP0531680A1 EP 0531680 A1 EP0531680 A1 EP 0531680A1 EP 92112603 A EP92112603 A EP 92112603A EP 92112603 A EP92112603 A EP 92112603A EP 0531680 A1 EP0531680 A1 EP 0531680A1
Authority
EP
European Patent Office
Prior art keywords
roller
transfer roller
finger
feed roller
feed
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
EP92112603A
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German (de)
English (en)
Other versions
EP0531680B1 (fr
Inventor
Johann Philipp Dilo
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.)
Oskar Dilo Maschinenfabrik KG
Original Assignee
Oskar Dilo Maschinenfabrik KG
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Publication date
Application filed by Oskar Dilo Maschinenfabrik KG filed Critical Oskar Dilo Maschinenfabrik KG
Publication of EP0531680A1 publication Critical patent/EP0531680A1/fr
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Publication of EP0531680B1 publication Critical patent/EP0531680B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H18/00—Needling machines
    • D04H18/02—Needling machines with needles
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H18/00—Needling machines

Definitions

  • the invention relates to a device for feeding a nonwoven fabric to a needle machine according to the preamble of claim 1.
  • a device for feeding a nonwoven fabric to a needle machine according to the preamble of claim 1.
  • Such a device has been marketed by the applicant under the name "Nonwoven Feeding System Type CBF" for several years.
  • Such feed devices on needle machines are intended to feed the fleece of staple fibers or continuous fibers coming from the fleece laying device with as little distortion as possible to the first row of needles of the needle machine for subsequent consolidation. Warping has a detrimental effect on the uniformity of the fleece and thus the quality of the fleece. Every delay increases the differences in the basis weight distribution. Thick areas remain thick, thin areas are drawn even thinner.
  • the above The known feed device consists of a base tape on which the fleece lies, an endless circumferential pre-compression tape arranged above it, and two so-called finger rollers arranged on the outlet side.
  • These are feed rollers which have a plurality of circumferential grooves distributed along the rollers, in which plastic rings lie slidingly.
  • on which fingers are formed which extend tangentially from the rings in the direction of the needle machine and thus bridge the gusset gap between the roller gap of the pair of finger rollers and the needle machine, more precisely the hold-down device and the throat plate thereof, so that the nonwoven in the compressed state between them Fingers slides through without suffering any noteworthy distortions.
  • a similar gusset gap bridging formed by wires extending through grooves in the feed rollers is described in US-A-36 21 540.
  • the invention has for its object to provide a feed device of the type mentioned, in which the aforementioned upper gusset gap is bridged so that there can be no nonwoven bag impairing the fleece transport.
  • the invention takes over by bridging the bottom Gusset gap already known idea to largely fill the gusset gap by a transfer roller.
  • a transfer roller arranged in the upper gusset nip that this roller is due to its slimness Gestalt shows a sag, which can be quite considerable with working widths of up to 13 m and more, which can be found in practice.
  • the invention specifies remedial measures for this, namely in the form of storage devices which are arranged distributed along the transfer roller and on which the transfer roller is suspended.
  • the transfer roller consists of a plurality of axially one behind the other, non-rotatably connected segments, and at the connection points the transfer roller is each provided with a rotary bearing, preferably a ball bearing, the outer bearing shell of which is defined by the gap between the finger roller and the precompression band upward hanging device is suspended.
  • storage devices can also be implemented in a simple manner by means of narrow, low-friction belts, in which the transfer roller lies directly and which are suspended from above through the space between the pre-compression belt and the upper finger roller and also on the outside of the pre-compression belt and the upper feed roller without causing interference.
  • the friction between the transfer roller or the belts on the one hand and the upper finger roller on the other hand can be largely eliminated if the upper feed roller is designed in the usual way as a finger roller with guide fingers, the rings held in the circumferential grooves of the finger roller and carrying the guide fingers unifying have a slightly larger outer diameter than the finger roller carrying them.
  • the tapes then rest on these rings and the transfer roller is thus a short distance from the peripheral surface of the finger roller.
  • the transfer roller can have flat circumferential grooves in which the tapes lie and it lies on the rings, so that the tapes do not jam between the transfer roller and the circumference of the finger roller.
  • the fingers of a suitably equipped upper finger roller are to the rear, i.e. against the feed direction of the fleece, extended and their ends are bent upward like a hook. They form holding fingers with receptacles for the transfer roller, which is provided with corresponding circumferential grooves in which these holding fingers engage. With appropriate elasticity of the material of the fingers it can be provided that the transfer roller is held locked by the hook-shaped ends of the holding fingers. Further alternatively, said hook-shaped ends can be attached to the holding fingers in an articulated manner and are pulled upwards by suspension devices acting on them. The holding fingers can be extended beyond the transfer roller against the feed direction of the fleece in order to at least partially bridge the remaining gusset gap remaining between the pre-compression band and the transfer roller.
  • FIG. 1 shows the inlet area of a needle machine 1 with a needle plate 2, a hold-down device 3 and an up and down movable needle bar 4, to which a plurality of needles 5 are fastened, of which only two are shown in the example for reasons of clarity.
  • two feed rollers are arranged, namely one under feed roller 6 and an upper feed roller 7. These are designed as so-called finger rollers, ie they have a plurality of grooves 8 (FIG.
  • a pre-compression device On the inlet side to the pair of finger rollers 6, 7 there is a pre-compression device, designated overall by 13, consisting of a lower base belt 14, which runs over a lower deflection roller 15, and an upper pre-compression belt 16, which runs over an upper deflection roller 17.
  • a lower transfer roller 18 In the gusset gap of approximately triangular cross-section formed between the base belt 14 and the lower finger roller 6 there is a lower transfer roller 18 which is driven in the same direction as the base belt 14 and the lower finger roller 6, for example via a chain drive which connects the lower finger roller 6 with the lower one Transfer roller 18 connects non-positively.
  • an upper transfer roller 19, which is driven in the same direction as the pre-compression belt 16 and the associated finger roller 7, is located in the upper gusset gap, which is formed between the pre-compression belt 16 on the upper deflection roller 17 and the upper finger roller 7.
  • the upper transfer roller 19 is preferably driven by means of a chain drive 20 from the upper finger roller 7, which connects the latter to the upper transfer roller 19 in a force-locking manner.
  • the power transmission takes place from the chain drive 20 to the upper one 3, preferably with the aid of an articulated shaft 21 with universal joints 22.
  • the upper transfer roller 19 is suspended in several places along its longitudinal extent in narrow flexible bands 23 which wrap around the transfer roller 19 and lie directly against its surface.
  • These belts 23 extend through the space between the precompression belt 16 on the deflection roller 17 and the upper finger roller 7 and are each suspended by means of a spring device 24 on a support 25 which is fixedly connected to the machine.
  • the spring devices 24 hold the upper transfer roller 19 and the belts 23 in contact with the precompression belt 16 and the finger roller 7 and at the same time allow the transfer roller 19 to move vertically if this should become necessary due to the adjustment of the height of the upper deflection roller 17.
  • the surface of the upper transfer roller 19 is preferably low-friction, it can be a polished or plastic-coated roller, polyethylene and polytetrafluoroethylene being particularly advantageous as coating materials.
  • the belts 23, on which the upper transfer roller 19 are suspended likewise consist of a low-friction material, for example polyethylene, in particular highly stretched polyethylene or of polytetrafluoroethylene or of polyethylene coated with this material.
  • the bands can be reinforced with a fabric if necessary.
  • the bands 23 are preferably arranged at regular intervals, which can be of the order of 50 cm. Other distances are also possible. They depend on the rigidity and the length of the upper transfer roller 19, which, as already mentioned, can be up to 13 m or even more.
  • the width of the bands 23 can be approximately 10 mm each.
  • FIGS. 3 and 4 Embodiments of the aforementioned type of the invention are shown in FIGS. 3 and 4.
  • the belts 23 are arranged at such points on the transfer roller 19 where rings 10 face each other.
  • the bands are thus in contact with the non-rotating rings, so that a rotating frictional movement is only on the inside, i.e. from the transfer roller 19, acts on the belts 23.
  • the transfer roller 19 is no longer in direct contact with the finger roller 7.
  • the transfer roller 19 rests on the fingers 10, thus does not touch the surface of the finger roller 7, and since the rings 10 are made of a low-friction material, there are also more favorable conditions than if the transfer roller 19 on the Surface of the finger roller 7 plant.
  • the belts 23 can lie in flat circumferential grooves in the transfer roller, so that they can in no way be clamped between the transfer roller 19 and the finger roller 7.
  • FIG. 5 An alternative embodiment of the support of the transfer roller 19 is shown schematically in section in FIG. 5.
  • some, preferably all, of the rings 10 carrying the guide fingers 12 on the upper finger roller 7 are provided with holding fingers 26 which extend opposite to the guide fingers 12 to the rear, ie opposite to the feed direction of the fleece, and in upwardly bent hook-like ends 27 expire.
  • the upper transfer roller 19 is formed in the hook-like ends 27 Inserted receptacles and for this purpose has circumferential grooves 28 at the appropriate points, in which the hook-like ends 27 lie.
  • the cold fingers 26 lie approximately in a line which represents a tangent to the finger roller 7 and the pre-compression belt 16 located on the deflection roller 17.
  • the circumference of the upper transfer roller 19 can lie in this tangent, but it is also advantageous if it protrudes downward relative to it, so that the nonwoven material can more effectively come into contact with the transfer roller 19 and be transported by it.
  • the holding fingers 26, in addition to their holding function also take on a task comparable to that of the guide fingers 12, namely bridging the remaining gap between the transfer roller 19 and the finger roller 7, so that, as can be seen, in this embodiment only a minimal gusset gap remains on the outlet side of the precompression band 16 that is not filled in. The bulging of the fleece which may occur there is so small that it does not interfere.
  • Fig. 6 shows a modification of Fig. 5, in which the hook-shaped ends are formed as brackets 27a articulated on the holding fingers 26 on pivot bearings 29, each of which is suspended at its upper end by means of a suspension device, for example a wire 23a, the Wire 23a extends upwards through the space between the pre-sealing tape 16 and finger roller 7 and is suspended on a spring device 24, which in turn is suspended at 25 on the machine frame, cf. also Fig. 1.
  • a suspension device for example a wire 23a
  • the Wire 23a extends upwards through the space between the pre-sealing tape 16 and finger roller 7 and is suspended on a spring device 24, which in turn is suspended at 25 on the machine frame, cf. also Fig. 1.
  • a suspension device for example a wire 23a
  • the Wire 23a extends upwards through the space between the pre-sealing tape 16 and finger roller 7 and is suspended on a spring device 24, which in turn is suspended at 25 on the machine frame,
  • FIG. 7 A further modification of the latter two embodiments of the invention is shown in FIG. 7.
  • the brackets 27a articulated on the holding fingers 26 each have a flag 27b, which extends beyond the transfer roller 19 against the feed direction of the fleece.
  • the lower edge of this flag 27b lies in line with the lower edge of the associated holding finger 26, so that all holding fingers 26 and flags 27b form a continuous guiding device for the fleece, in the central portion of which the transfer roller 19 is located.
  • the circumference is expediently protruding somewhat downward between the holding fingers 26 and flags 27b, as shown, in order to promote the transport of the fleece.
  • the flags 27b are designed in such a way that they bridge the remaining gusset-shaped gap between the precompression belt 16 and the transfer roller 19 as much as possible.
  • the transfer roller 19 can be driven in one of the aforementioned ways via chain gears.
  • the transfer roller 19 has a diameter which is sufficiently large to fill the gusset gap as much as possible. It is expediently dimensioned such that a deepest point on the circumference of the transfer roller 19 lies at least approximately in a line which tangentially connects the circumference of the finger roller 7 with the precompression belt 16 wound around the deflection roller 17, but is preferably below this line, as in particular 7 shows.
  • Fig. 8 shows a detail of an embodiment of the invention from above, in which the transfer roller is divided into a plurality of segments 19a, 19b, 19c, etc., which are arranged axially one behind the other and are connected to one another in a rotationally fixed manner.
  • the connection can be set up, for example, by means of pins 30 are, with keys 31, as shown, or cross bolts to prevent the segments 19a, 19b, etc. from rotating.
  • bearing devices 32 are attached to the transfer roller 19, which are advantageously pushed onto the connecting pins 30.
  • the bearing devices 32 are expediently roller bearings, and their outer bearing shells 32a are, as shown in FIG. 9, comparable to the embodiments according to FIGS.
  • this embodiment lies in the particular low friction.
  • this embodiment can be combined with the lateral support of the transfer roller 19 on the rings 10 according to the type of FIG. 4, but it is also possible to allow the outer bearing shells 32a to bear against the rings 10 in order to create friction on the surface to avoid the finger roller 7. In this case, the transfer roller 19 does not touch the finger roller 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Nonwoven Fabrics (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Knitting Machines (AREA)
EP92112603A 1991-08-29 1992-07-23 Dispositif d'introduction d'une nappe fibreuse dans une aiguilleteuse Expired - Lifetime EP0531680B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4128734 1991-08-29
DE4128734A DE4128734A1 (de) 1991-08-29 1991-08-29 Einrichtung zum zufuehren eines faservlieses zu einer nadelmaschine

Publications (2)

Publication Number Publication Date
EP0531680A1 true EP0531680A1 (fr) 1993-03-17
EP0531680B1 EP0531680B1 (fr) 1995-09-27

Family

ID=6439438

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92112603A Expired - Lifetime EP0531680B1 (fr) 1991-08-29 1992-07-23 Dispositif d'introduction d'une nappe fibreuse dans une aiguilleteuse

Country Status (5)

Country Link
US (1) US5307546A (fr)
EP (1) EP0531680B1 (fr)
JP (1) JPH05195408A (fr)
AT (1) ATE128497T1 (fr)
DE (2) DE4128734A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7845055B1 (en) 2009-10-29 2010-12-07 Mcneil-Ppc, Inc. Tampon formed from a selectively needled nonwoven fabric web

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10146907B4 (de) * 2001-09-24 2007-02-22 Oskar Dilo Maschinenfabrik Kg Vlieszuführvorrichtung
CN107829220A (zh) * 2017-12-04 2018-03-23 常熟市振泰无纺机械有限公司 预针刺喂棉机
FR3098527B1 (fr) * 2019-07-11 2021-07-23 Andritz Asselin Thibeau Dispositif de transfert et/ou d'introduction d'une nappe de fibres, notamment d'une nappe de non-tissé, dans une installation de consolidation, notamment une aiguilleteuse

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3540096A (en) * 1967-07-17 1970-11-17 Jorge Porta Needled fabric sleeve and apparatus for making the same
DE2053863A1 (de) * 1969-11-03 1971-05-13 Crompton & Knowles Corp , Worcester, Mass (VStA) Vorrichtung zum Fordern von watte artigem Fasermatenal
FR2081737A1 (en) * 1970-03-06 1971-12-10 Fehrer Ernst Feeding low cohesion fibre voiles to needling machines
FR2265896A1 (fr) * 1974-04-01 1975-10-24 Fehrer Textilmasch
DE2945872A1 (de) * 1979-11-14 1981-05-27 Hoechst Ag, 6000 Frankfurt Nadelmaschine
EP0388072A2 (fr) * 1989-03-14 1990-09-19 Emhart Materials UK Limited Procédé d'aiguilletage

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1770252A (en) * 1927-12-31 1930-07-08 Paratex Corp Needling machine
US2177604A (en) * 1937-08-12 1939-10-24 Bigelow Sanford Carpet Co Inc Needling machine
DE1991758U (de) * 1968-06-15 1968-08-14 Dilo Kg Oskar Nadelfilzmaschine.
AT318252B (de) * 1972-03-06 1974-10-10 Fehrer Ernst Gmbh Vorrichtung zum Einführen von Vliesen in Nadelmaschinen
US4042655A (en) * 1975-09-05 1977-08-16 Phillips Petroleum Company Method for the production of a nonwoven fabric
DE2706976C3 (de) * 1977-02-18 1979-08-09 Hoechst Ag, 6000 Frankfurt Verfahren zur Vermeidung von Abfall bei der Vliesherstellung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3540096A (en) * 1967-07-17 1970-11-17 Jorge Porta Needled fabric sleeve and apparatus for making the same
DE2053863A1 (de) * 1969-11-03 1971-05-13 Crompton & Knowles Corp , Worcester, Mass (VStA) Vorrichtung zum Fordern von watte artigem Fasermatenal
FR2081737A1 (en) * 1970-03-06 1971-12-10 Fehrer Ernst Feeding low cohesion fibre voiles to needling machines
FR2265896A1 (fr) * 1974-04-01 1975-10-24 Fehrer Textilmasch
DE2945872A1 (de) * 1979-11-14 1981-05-27 Hoechst Ag, 6000 Frankfurt Nadelmaschine
EP0388072A2 (fr) * 1989-03-14 1990-09-19 Emhart Materials UK Limited Procédé d'aiguilletage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7845055B1 (en) 2009-10-29 2010-12-07 Mcneil-Ppc, Inc. Tampon formed from a selectively needled nonwoven fabric web

Also Published As

Publication number Publication date
EP0531680B1 (fr) 1995-09-27
JPH05195408A (ja) 1993-08-03
DE59203818D1 (de) 1995-11-02
DE4128734A1 (de) 1993-03-04
US5307546A (en) 1994-05-03
ATE128497T1 (de) 1995-10-15

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