EP0026690B1 - Needling machine for non-woven mats - Google Patents

Needling machine for non-woven mats Download PDF

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Publication number
EP0026690B1
EP0026690B1 EP80401291A EP80401291A EP0026690B1 EP 0026690 B1 EP0026690 B1 EP 0026690B1 EP 80401291 A EP80401291 A EP 80401291A EP 80401291 A EP80401291 A EP 80401291A EP 0026690 B1 EP0026690 B1 EP 0026690B1
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EP
European Patent Office
Prior art keywords
crank
needle
machine according
pair
felting machine
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EP80401291A
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German (de)
French (fr)
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EP0026690A1 (en
Inventor
Pierre Asselin
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Asselin SA
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Asselin SA
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Priority to AT80401291T priority Critical patent/ATE4732T1/en
Publication of EP0026690A1 publication Critical patent/EP0026690A1/en
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    • 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 present invention relates to a needling machine for nonwoven webs, of the type comprising, in addition to means for advancing the web, one or more boards provided with needles and an eccentric up-and-down mechanism with eccentric and connecting rod to animate this board. in a reciprocating movement substantially vertical and perpendicular to the sheet in order to make the needles penetrate therein.
  • Machines of this kind are known in particular from DE-A-1 660 775, which reveals the principle thereof, but teaches only a little perfected embodiment and having certain drawbacks.
  • the connecting rod moves in a plane parallel to the direction of advance of the ply and the mechanical assembly is housed in a box beam transverse to this movement, which makes it difficult to access this mechanism.
  • Document DE-A-2 431 498 describes a more improved version, presenting better balancing, but the drive mechanisms are arranged one next to the other, along the width of the ply, the connecting rods still moving in planes parallel to the direction of advance of the web.
  • One of the aims of the present invention is to provide a machine in which the mechanism, although fixed with all the solidity and stability desired, is easily accessible from the front or from the rear of the machine, without any dismantling .
  • Another object of the invention is to allow the production of a modular needling machine, that is to say adaptable without fundamental modification of the frame and its annexes, to the execution of various methods of needling for the same ply width.
  • the mechanisms are thus very easily accessible, some from the front of the machine, others from the rear, whether the needling is done from above or from below.
  • the beam has a section in 1 and its core is pierced with a succession of openings in number equal to that of the pairs of coupled rod-crank assemblies, each opening being traversed by a sleeve in which is rotatably mounted a crankshaft whose eccentric crankpins carry the rod ends.
  • Each mechanism is located entirely on the same side of the web of the beam. It is therefore not only accessible but completely apparent.
  • the connecting rods of each connecting rod-crank assembly cross one of the wings of the beam in holes arranged on either side of the core.
  • each pair of rod-crank assemblies comprises two flywheels provided with balance weights integral in rotation with the crankshaft.
  • the flywheels of each pair of connecting rod-crank assemblies having a flange enveloping the ends of the sleeve passing through the beam and the annular balancing masses are housed between the sleeve and the abovementioned flange.
  • This construction method allows a particularly compact construction in the transverse direction to the beam, which reduces the range to be given to the crankshaft.
  • the means for driving in rotation each pair of rod-crank assemblies comprise a driving pinion which is connected to one of the flywheels of the assembly considered by a toothed belt mounted on the periphery of this steering wheel.
  • the drive means of the up-and-down mechanism advantageously comprise a motor carried by the beam with a section in 1 of the frame, which actuates a distribution shaft mounted parallel to this beam, this shaft driving a set of drive pinions each connected to one of the pairs of connecting rod-crank assemblies placed on either side of the core of the beam, each driving pinion receiving its movement from a bevel gear mechanism passing through the core of the beam.
  • the needling machine comprises coupling and guiding means in substantially vertical displacement of the connecting rod ends of each pair of connecting rod-crank assemblies, these connecting rod feet being articulated on the movable beam carrying the needle board.
  • These coupling and guiding means comprise a common axis on which said connecting rod feet are articulated, and this axis further carries a conjugation rod rotatably mounted on it and articulated by its two ends. on two respective crank arms, each articulated on the frame of the machine.
  • the coupling and guiding means are advantageously carried by the lower wing of the beam and located in the extension of the core of the latter.
  • the needling machine comprises a certain number of pairs of connecting rod-crank assemblies, aligned transversely with respect to the direction of advance of the web, and each pair of connecting rod-crank assemblies of the beam is separated from the next pair by spacer walls mounted between the wings.
  • the needling machine has a modular structure, the pairs of rod-crank assemblies being substantially identical to each other and interchangeable.
  • the needling machine can be designed so that each of the two connecting rods of the same pair is connected to a separate needle board, or so that the two connecting rods of the same pair are connected to the same needle board.
  • a needling machine comprises a beam 1 in 1 fixed on two pillars 2a, 2b, the assembly constituting a frame of the needling machine.
  • a path 3 is provided for the passage of a nonwoven sheet 4 transversely to the beam 1, under the action of known means comprising in particular rollers 5.
  • Two needle boards 6a, 6b are arranged above the path 3 and each connected to two up-and-down mechanisms to strike the ply 4.
  • Each of these mechanisms is itself composed of two rod-crank assemblies, 7a, 7b and 8a, 8b respectively.
  • the two sets of the same mechanism are connected to two different boards assigned, in the drawings, corresponding literal indices (a or b).
  • the aforementioned mechanisms are fixed to the core 9 of the beam 1, the rod-crank assemblies of the same mechanism being located on either side of the core.
  • the connecting rods 11a, 11b and 12a, 12b of these assemblies pass through the lower wing 13 of the beam 1 through holes 14.
  • a motor 15 fixed on the beam 1 attacks by belts 10 a distribution shaft 16 carried by said beam and extending parallel to it.
  • the shaft 16 drives pulleys 18 which transmit the movement to the assemblies 7a, 7b and 8a, 8b.
  • systems 19, 21 for coupling and guiding the feet 22a, 22b and 23a, 23b of the connecting rods are fixed under the lower wing 13 of the beam 1 and substantially in the extension of its core 9.
  • Reinforcements 24 are provided in the core 9 of the beam 1 for fixing the bevel gears 17 by bolts in holes 25.
  • Other reinforcements 26 are provided for fixing bearings bearing the shaft 16.
  • a sleeve 27 is fixed by bolts 28 on a counterbore 29 formed in the core 9 around a hole 31. This fixing is carried out by means of a flange 32 of the sleeve 27 arranged in such a way that once fixed, the sleeve projects substantially the same length on both sides of the core 9.
  • Two flywheels 37a, 37b are fixed to the crankshaft 34 by bolts 38 and have flanges 39a, 39b enveloping the ends of the sleeve 27. Inside these flanges are fixed, by bolts 41, eccentric masses 42a, 42b forming balancing imbalance.
  • the flange 39a is mounted so as to be driven by a toothed belt 43 passing over the toothed pulley 18 wedged on the end of the output shaft 45 of the angle gear 17.
  • a casing 46 is fixed by bolts 47 to a reinforcement 48 of the lower wing 13 of the beam 1. Thanks to two elongated openings 49, this casing, located under the core 9 of the beam 1, is entirely crossed by a common axis 51 articulated on the two connecting rod feet 22a, 22b.
  • the axis 51 carries, appreciably in its center, a conjugation link 52 rotatably mounted on it by means of a bearing 53.
  • the link 52 is articulated on the mobile end of two respective crank arms 54, 55, by means of axes 56, 57 and bearings 58, 59.
  • Each of the two crank arms 54, 55 is mounted oscillating on respective axes 61, 62 carried by bearings 63, 64 secured to the casing 46, therefore to the frame of the machine.
  • the bevel gear 17 are arranged so as to rotate the two mechanisms in opposite directions to one another, with a setting such that the connecting rods 11a, 11b on the one hand, and 12a, 12b on the other hand , are constantly symmetrical with respect to the longitudinal median plane of the machine.
  • the constancy of this setting is obtained thanks to the transmission by toothed belt.
  • each needle board can be divided lengthwise into a number of segments, for example two segments 106a, 106b (FIG. 10), or three segments 206a, 206b, 206c, each of these segments being driven by a module of two mechanisms, a module being the assembly of one of the mechanisms shown in FIG. 1.
  • a module being the assembly of one of the mechanisms shown in FIG. 1.
  • partitions 65 which play the role of stiffeners and which give the beam 1 a rigidity that is all the stronger as the mechanisms which request it are numerous.
  • the invention retains all of its advantages in its application to a needle punch with lower impact (figs 12 and 13).
  • the beam 1 is located in the low position and the rod-crank assemblies 7a and 7b are also as easily accessible from the front or from the rear of the machine.
  • the lower strike can be obtained by two boards 6a, 6b (fig. 12), or by a single board 6 (fig. 13).
  • the two types of strikes can still be combined not simultaneously, but successively (fig. 15).
  • the needling machine is then practically split into two half-machines traversed successively by the ply 4.
  • a beam 1 is in the high position and a beam 1a is in the low position.
  • the extreme assemblies 7b and 70b are accessible directly from the front and from the rear respectively.
  • the assemblies 7a and 70a they are accessible almost as easily thanks to the upper and lower clearances left by the other half-machine.
  • the invention therefore makes it possible to produce a complete range of needling machines, capable of meeting all needs while retaining its basic characteristics of accessibility of the mechanism and modularity.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Looms (AREA)
  • Multicomponent Fibers (AREA)

Abstract

A felting machine for non-woven fabrics comprising a frame provided with a guide path for the fabric and two needle boards. Two crank-rod mechanisms are fixed to a beam of I-shaped cross-section. Each mechanism comprises two crank-rod units fixed on both sides of the web of the beam. These units are easily accessible through the front or through the rear of the machine in any operating position of the system.

Description

La présente invention concerne une aiguilleteuse pour nappes non-tissées, du genre comprenant, outre des moyens pour faire avancer la nappe, une ou plusieurs planches munies d'aiguilles et un mécanisme de monte-et-baisse à excentrique et bielle pour animer cette planche d'un mouvement alternatif sensiblement vertical et perpendiculaire à la nappe afin d'y faire pénétrer des aiguilles.The present invention relates to a needling machine for nonwoven webs, of the type comprising, in addition to means for advancing the web, one or more boards provided with needles and an eccentric up-and-down mechanism with eccentric and connecting rod to animate this board. in a reciprocating movement substantially vertical and perpendicular to the sheet in order to make the needles penetrate therein.

Des machines de ce genre sont connues notamment par le DE-A-1 660 775, qui en révèle le principe, mais n'enseigne qu'une réalisation peu perfectionnée et présentant certains inconvénients. Outre le fait que l'entraînement s'effectue par un seul arbre, ce qui déséquilibre la machine, la bielle se déplace dans un plan parallèle à la direction d'avance de la nappe et l'ensemble mécanique est logé dans une poutre-caisson transversale à ce déplacement, ce qui rend malaisée l'accession à ce mécanisme.Machines of this kind are known in particular from DE-A-1 660 775, which reveals the principle thereof, but teaches only a little perfected embodiment and having certain drawbacks. In addition to the fact that the drive is carried out by a single shaft, which unbalances the machine, the connecting rod moves in a plane parallel to the direction of advance of the ply and the mechanical assembly is housed in a box beam transverse to this movement, which makes it difficult to access this mechanism.

Le document DE-A-2 431 498 décrit une version plus perfectionnée, présentant un meilleur équilibrage, mais les mécanismes d'entraînement sont disposés les uns à côté des autres, suivant la largeur de la nappe, les bielles se déplaçant encore dans des plans parallèles à la direction d'avance de la nappe.Document DE-A-2 431 498 describes a more improved version, presenting better balancing, but the drive mechanisms are arranged one next to the other, along the width of the ply, the connecting rods still moving in planes parallel to the direction of advance of the web.

L'accès à ces mécanismes est donc encore ex- trémement malaisé, notamment en vue de réviser les embiellages.Access to these mechanisms is therefore still extremely difficult, particularly with a view to revising the linkages.

L'un des buts de la présente invention est de réaliser une machine dans laquelle le mécanisme, bien que fixé avec toute la solidité et la stabilité voules, soit facilement accessible par l'avant ou par l'arrière de la machine, sans aucun démontage.One of the aims of the present invention is to provide a machine in which the mechanism, although fixed with all the solidity and stability desired, is easily accessible from the front or from the rear of the machine, without any dismantling .

Un autre but de l'invention, complémentaire des précédents, est de permettre la réalisation d'une aiguilleteuse modulaire, c'est-à-dire adaptable sans modification fondamentale du bâti et de ses annexes, à l'exécution de diverses modalités d'aiguilletage pour une même largeur de nappe.Another object of the invention, complementary to the previous ones, is to allow the production of a modular needling machine, that is to say adaptable without fundamental modification of the frame and its annexes, to the execution of various methods of needling for the same ply width.

Ces buts sont atteints, conformément à l'invention, au moyen d'un mécanisme comprenant deux paires d'ensembles bielle-manivelle, les ensembles composant une paire étant accouplés mécaniquement et disposés chacun d'un côté d'une même poutre disposée transversalement par rapport à la direction d'avance de la nappe.These objects are achieved, in accordance with the invention, by means of a mechanism comprising two pairs of rod-crank assemblies, the assemblies constituting a pair being mechanically coupled and each arranged on one side of the same beam arranged transversely by relative to the direction of advance of the tablecloth.

Les mécanismes sont ainsi très facilement accessibles, les uns par l'avant de la machine, les autres par l'arrière, que l'aiguilletage so fasse par le dessus ou par le dessous.The mechanisms are thus very easily accessible, some from the front of the machine, others from the rear, whether the needling is done from above or from below.

Suivant une réalisation préférée de l'invention, la poutre présente une section en 1 et son âme est percée d'une succession d'ouvertures en nombre égal à celui des paires d'ensembles bielle-manivelle accouplés, chaque ouverture étant traversée par un manchon dans lequel est monté rotativement un vilebrequin dont les manetons excentrés portent les têtes de bielle.According to a preferred embodiment of the invention, the beam has a section in 1 and its core is pierced with a succession of openings in number equal to that of the pairs of coupled rod-crank assemblies, each opening being traversed by a sleeve in which is rotatably mounted a crankshaft whose eccentric crankpins carry the rod ends.

Chaque mécanisme est situé entièrement d'un même côté de l'âme de la poutre. Il est donc non seulement accessible mais totalement apparent.Each mechanism is located entirely on the same side of the web of the beam. It is therefore not only accessible but completely apparent.

Dans une réalisation particulière de l'invention, les bielles de chaque ensemble bielle-manivelle traversent l'une des ailes de la poutre dans des perçages disposés de part et d'autre de l'âme.In a particular embodiment of the invention, the connecting rods of each connecting rod-crank assembly cross one of the wings of the beam in holes arranged on either side of the core.

Les larges ailes de la poutre, nécessaires à la stabilité de la machine et à sa rigidité, sont ainsi parfaitement compatibles avec le resserrement l'un contre l'autre des ensembles d'une même paire.The wide wings of the beam, necessary for the stability of the machine and its rigidity, are thus perfectly compatible with the tightening one against the other of the sets of the same pair.

Suivant une réalisation avantageuse de l'invention, chaque paire d'ensembles bielle-manivelle comporte deux volants pourvus de masses d'équilibrage solidaires en rotation du vilebrequin.According to an advantageous embodiment of the invention, each pair of rod-crank assemblies comprises two flywheels provided with balance weights integral in rotation with the crankshaft.

Ces masses permettent d'équilibrer notamment les forces d'inertie primaires de pièces en mouvement ainsi que les couples de renversement engendrés par le guidage de la bielle.These masses make it possible in particular to balance the primary inertia forces of moving parts as well as the overturning torques generated by the guide of the connecting rod.

De préférence, les volants de chaque paire d'ensembles bielle-manivelle présentant un rebord enveloppant les extrémités du manchon traversant la poutre et les masses d'équilibrage annulaires sont logées entre le manchon et le rebord précité.Preferably, the flywheels of each pair of connecting rod-crank assemblies having a flange enveloping the ends of the sleeve passing through the beam and the annular balancing masses are housed between the sleeve and the abovementioned flange.

Ce mode de construction permet une réalisation particulièrement compacte dans le sens transversal à la poutre, ce qui diminue la portée à donner au vilebrequin.This construction method allows a particularly compact construction in the transverse direction to the beam, which reduces the range to be given to the crankshaft.

Suivant une réalisation perfectionnée de l'invention, les moyens d'entraînement en rotation de chaque paire d'ensembles bielle-manivelle comprennent un pignon moteur qui est relié à l'un des volants de l'ensemble considéré par une courroie crantée montée sur la périphérie de ce volant.According to an improved embodiment of the invention, the means for driving in rotation each pair of rod-crank assemblies comprise a driving pinion which is connected to one of the flywheels of the assembly considered by a toothed belt mounted on the periphery of this steering wheel.

Les moyens d'entraînement du mécanisme de monte-et-baisse comprennent avantageusement un moteur porté par la poutre à section en 1 du bâti, qui actionne un arbre de distribution monté parallèlement à cette poutre, cet arbre entraînant un ensemble de pignons moteurs reliés chacun à l'une des paires d'ensembles bielle-manivelle placés de part et d'autre de l'âme de la poutre, chaque pignon moteur recevant son mouvement d'un mécanisme de renvoi d'angle traversant l'âme de la poutre.The drive means of the up-and-down mechanism advantageously comprise a motor carried by the beam with a section in 1 of the frame, which actuates a distribution shaft mounted parallel to this beam, this shaft driving a set of drive pinions each connected to one of the pairs of connecting rod-crank assemblies placed on either side of the core of the beam, each driving pinion receiving its movement from a bevel gear mechanism passing through the core of the beam.

L'ensemble de la mécanique se trouve ainsi réalisé de façon très compacte sans que son accessibilité en soit affectée.All of the mechanics are thus produced in a very compact manner without affecting its accessibility.

Suivant un perfectionnement important de l'invention, l'aiguilleteuse comprend des moyens d'accouplement et de guidage en déplacement sensiblement vertical des pieds de bielles de chaque paire d'ensembles bielle-manivelle, ces pieds de bielles étant articulés sur la poutre mobile portant la planche à aiguilles.According to an important improvement of the invention, the needling machine comprises coupling and guiding means in substantially vertical displacement of the connecting rod ends of each pair of connecting rod-crank assemblies, these connecting rod feet being articulated on the movable beam carrying the needle board.

Ces moyens d'accouplement et de guidage comprennent un axe commun sur lequel s'articulent lesdits pieds de bielle, et cet axe porte en outre une biellette de conjugaison montée rotativement sur lui et articulée par ses deux extrémités sur deux bras de manivelle respectifs, eux-mêmes articulés chacun sur le bâti de la machine.These coupling and guiding means comprise a common axis on which said connecting rod feet are articulated, and this axis further carries a conjugation rod rotatably mounted on it and articulated by its two ends. on two respective crank arms, each articulated on the frame of the machine.

On obtient ainsi un guidage sans frottement' translatif, donc pratiquement sans usure, bien que les vitesses linéaires soient relativement importantes.There is thus obtained a guide without translational friction, therefore practically without wear, although the linear speeds are relatively high.

Les moyens d'accouplement et de guidage sont avantageusement portés par l'aile inférieure de la poutre et situés dans le prolongement de l'âme de cette dernière.The coupling and guiding means are advantageously carried by the lower wing of the beam and located in the extension of the core of the latter.

Suivant une caractéristique importante de l'invention, l'aiguilleteuse comprend un certain nombre de paires d'ensembles bielle-manivelle, alignées transversalement par rapport à la direction d'avance du voile, et chaque paire d'ensembles bielle-manivelle de la poutre est séparée de la paire suivante par des cloisons d'entretoisement montées entre les ailes.According to an important characteristic of the invention, the needling machine comprises a certain number of pairs of connecting rod-crank assemblies, aligned transversely with respect to the direction of advance of the web, and each pair of connecting rod-crank assemblies of the beam is separated from the next pair by spacer walls mounted between the wings.

Corrélativement, l'aiguilleteuse présente une structure modulaire, les paires d'ensembles bielle-manivelle étant sensiblement identiques entre elles et interchangeables.Correlatively, the needling machine has a modular structure, the pairs of rod-crank assemblies being substantially identical to each other and interchangeable.

L'aiguilleteuse peut être conçue de façon que chacune des deux bielles d'une même paire soit reliée à une planche à aiguilles distincte, ou de façon que les deux bielles d'une même paire soient reliées à une même planche à aiguilles. D'autres particularités et avantages de l'invention ressortiront encore de la description détaillée qui va suivre.The needling machine can be designed so that each of the two connecting rods of the same pair is connected to a separate needle board, or so that the two connecting rods of the same pair are connected to the same needle board. Other features and advantages of the invention will emerge from the detailed description which follows.

Aux dessins annexés, donnés à titre d'exemple non limitatif:

  • - la fig. 1 est une vue en élévation, de face, d'une aiguilleteuse conforme à l'invention,
  • - la fig. 2 est une vue en coupe suivant II-II de la fig. 1,
  • - la fig. 3 est une vue en élévation de la poutre seule,
  • - la fig. 4 est une vue en coupe suivant IV-IV de la fig. 3, avec vue éclatée du manchon,
  • - la fig. 5 est une vue de profil en coupe partielle d'un mécanisme,
  • - la fig. 6 est une vue de face de ce mécanisme, suivant VI-VI de la fig. 5,
  • - la fig. 7 est une vue agrandie, en coupe suivant VII-VII de la fig. 6, montrant le système d'accouplement et de guidage des bielles,
  • - la fig. 8 est une vue en coupe latérale suivant VIII-VIII des figs 7 et 9,
  • - la fig. 9 est une vue en coupe en plan suivant IX-IX des figs 7 et 8,
  • - les figs 10 et 11 sont des vues d'ensemble de face d'aiguilleteuses respectivement à quatre modules mécaniques et à six modules mécaniques,
  • - les figs 12 à 15 sont des vues en coupe d'aiguil- leteuses parallèlement à la direction d'avance de la nappe suivant diverses variantes de réalisation de l'invention.
In the accompanying drawings, given by way of nonlimiting example:
  • - fig. 1 is an elevational front view of a needling machine according to the invention,
  • - fig. 2 is a sectional view along II-II of FIG. 1,
  • - fig. 3 is an elevation view of the beam alone,
  • - fig. 4 is a sectional view along IV-IV of FIG. 3, with an exploded view of the sleeve,
  • - fig. 5 is a side view in partial section of a mechanism,
  • - fig. 6 is a front view of this mechanism, according to VI-VI of FIG. 5,
  • - fig. 7 is an enlarged view, in section along VII-VII of FIG. 6, showing the coupling and guide system of the connecting rods,
  • - fig. 8 is a side sectional view along VIII-VIII of FIGS. 7 and 9,
  • - fig. 9 is a plan section view along IX-IX of FIGS. 7 and 8,
  • FIGS. 10 and 11 are overall front views of needling machines with four mechanical modules and six mechanical modules respectively,
  • - Figs 12 to 15 are sectional views of needlers parallel to the direction of advance of the ply according to various alternative embodiments of the invention.

En référence aux figs 1 et 2, une aiguilleteuse comprend une poutre 1 en 1 fixée sur deux piliers 2a, 2b, l'ensemble constituant un bâti de l'aiguilleteuse. Un chemin 3 est prévu pour le passage d'une nappe de non-tissé 4 transversalement à la poutre 1, sous l'action de moyens connus comprenant notamment des rouleaux 5.With reference to FIGS. 1 and 2, a needling machine comprises a beam 1 in 1 fixed on two pillars 2a, 2b, the assembly constituting a frame of the needling machine. A path 3 is provided for the passage of a nonwoven sheet 4 transversely to the beam 1, under the action of known means comprising in particular rollers 5.

Deux planches à aiguilles 6a, 6b sont disposées au-dessus du chemin 3 et reliées chacune à deux mécanismes de monte-et-baisse pour venir frapper la nappe 4. Chacun de ces mécanismes est lui- même composé de deux ensembles bielle-manivelle, respectivement 7a, 7b et 8a, 8b. Les deux ensembles d'un même mécanisme sont reliés à deux planches différentes affectées, sur les dessins, des indices littéraux (a ou b) correspondants.Two needle boards 6a, 6b are arranged above the path 3 and each connected to two up-and-down mechanisms to strike the ply 4. Each of these mechanisms is itself composed of two rod-crank assemblies, 7a, 7b and 8a, 8b respectively. The two sets of the same mechanism are connected to two different boards assigned, in the drawings, corresponding literal indices (a or b).

Les mécanismes précités sont fixés sur l'âme 9 de la poutre 1, les ensembles bielle-manivelle d'un même mécanisme étant situés de part et d'autre de l'âme. Les bielles 11a, 11b et 12a, 12b de ces ensembles traversent l'aile inférieure 13 de la poutre 1 par des trous 14.The aforementioned mechanisms are fixed to the core 9 of the beam 1, the rod-crank assemblies of the same mechanism being located on either side of the core. The connecting rods 11a, 11b and 12a, 12b of these assemblies pass through the lower wing 13 of the beam 1 through holes 14.

Un moteur 15 fixé sur la poutre 1 attaque par des courroies 10 un arbre de distribution 16 porté par ladite poutre et s'étendant parallèlement à elle.A motor 15 fixed on the beam 1 attacks by belts 10 a distribution shaft 16 carried by said beam and extending parallel to it.

Par l'intermédiaire de renvois d'angle 17, l'arbre 16 attaque des poulies 18 qui transmettent le mouvement aux ensembles 7a, 7b et 8a, 8b.By means of bevel gear 17, the shaft 16 drives pulleys 18 which transmit the movement to the assemblies 7a, 7b and 8a, 8b.

Enfin, des systèmes 19, 21 d'accouplement et de guidage des pieds 22a, 22b et 23a, 23b des bielles sont fixés sous l'aile inférieure 13 de la poutre 1 et sensiblement dans le prolongement de son âme 9.Finally, systems 19, 21 for coupling and guiding the feet 22a, 22b and 23a, 23b of the connecting rods are fixed under the lower wing 13 of the beam 1 and substantially in the extension of its core 9.

On va maintenant décrire plus en détail, en référence aux figs 3 à 6, les ensembles bielle-manivelle composant les mécanismes. On décrira seulement l'un de ces mécanismes, l'autre étant sensiblement identique.We will now describe in more detail, with reference to Figs 3 to 6, the rod-crank assemblies making up the mechanisms. Only one of these mechanisms will be described, the other being substantially identical.

Des renforts 24 sont ménagés dans l'âme 9 de la poutre 1 pour la fixation des renvois d'angle 17 par boulons dans des trous 25. D'autres renforts 26 sont prévus pour la fixation de paliers supportant l'arbre 16.Reinforcements 24 are provided in the core 9 of the beam 1 for fixing the bevel gears 17 by bolts in holes 25. Other reinforcements 26 are provided for fixing bearings bearing the shaft 16.

Un manchon 27 est fixé par des boulons 28 sur un lamage 29 pratiqué dans l'âme 9 autour d'un trou 31. Cette fixation est réalisée par l'intermédiaire d'une bride 32 du manchon 27 disposée de telle manière qu'une fois fixé, le manchon dépasse sensiblement de la même longueur des deux côtés de l'âme 9.A sleeve 27 is fixed by bolts 28 on a counterbore 29 formed in the core 9 around a hole 31. This fixing is carried out by means of a flange 32 of the sleeve 27 arranged in such a way that once fixed, the sleeve projects substantially the same length on both sides of the core 9.

De chaque côté du manchon sont bloqués des roulements 33a, 33b portant un vilebrequin 34 dont les manetons d'extrémités 35a, 35b s'articulent dans les têtes 36a, 36b des bielles 11a, 11b.On each side of the sleeve are locked bearings 33a, 33b carrying a crankshaft 34, the end pins 35a, 35b of which are articulated in the heads 36a, 36b of the connecting rods 11a, 11b.

Deux volants 37a, 37b sont fixés au vilebrequin 34 par des boulons 38 et présentent des rebords 39a, 39b enveloppant les extrémités du manchon 27. A l'intérieur de ces rebords sont fixées, par des boulons 41, des masses excentrées 42a, 42b formant balourd d'équilibrage.Two flywheels 37a, 37b are fixed to the crankshaft 34 by bolts 38 and have flanges 39a, 39b enveloping the ends of the sleeve 27. Inside these flanges are fixed, by bolts 41, eccentric masses 42a, 42b forming balancing imbalance.

Le rebord 39a est monté de manière à être entraîné par une courroie crantée 43 passant sur la poulie crantée 18 calée sur le bout d'arbre de sortie 45 du renvoi d'angle 17.The flange 39a is mounted so as to be driven by a toothed belt 43 passing over the toothed pulley 18 wedged on the end of the output shaft 45 of the angle gear 17.

On va maintenant décrire en détail le système d'accouplement et de guidage de pieds 22a, 22b des bielles 11a, 11b, en référence aux figs 7 à 9.We will now describe in detail the coupling and foot guiding system 22a, 22b of the connecting rods 11a, 11b, with reference to FIGS. 7 to 9.

Un carter 46 est fixé par des boulons 47 sur un renfort 48 de l'aile inférieure 13 de la poutre 1. Grâce à deux ouvertures allongées 49, ce carter, situé sous l'âme 9 de la poutre 1, est entièrement traversé par un axe commun 51 articulé sur les deux pieds de bielles 22a, 22b.A casing 46 is fixed by bolts 47 to a reinforcement 48 of the lower wing 13 of the beam 1. Thanks to two elongated openings 49, this casing, located under the core 9 of the beam 1, is entirely crossed by a common axis 51 articulated on the two connecting rod feet 22a, 22b.

A l'intérieur du carter 46, l'axe 51 porte, sensi- "blement en son milieu, une biellette de conjugaison 52 montée rotativement sur lui par l'intermédiaire d'un roulement 53.Inside the casing 46, the axis 51 carries, appreciably in its center, a conjugation link 52 rotatably mounted on it by means of a bearing 53.

.. A chacune de ses extrémités, la biellette 52 est articulée sur l'extrémité mobile de deux bras de manivelle respectifs 54, 55, par l'intermédiaire d'axes 56, 57 et de roulements 58, 59... At each of its ends, the link 52 is articulated on the mobile end of two respective crank arms 54, 55, by means of axes 56, 57 and bearings 58, 59.

Chacun des deux bras de manivelle 54, 55 est monté oscillant sur des axes respectifs 61, 62 portés par des paliers 63, 64 solidaires du carter 46, donc du bâti de la machine.Each of the two crank arms 54, 55 is mounted oscillating on respective axes 61, 62 carried by bearings 63, 64 secured to the casing 46, therefore to the frame of the machine.

On va maintenant expliquer le fonctionnement de l'aiguilleteuse qui vient d'être décrite.We will now explain the operation of the needling machine which has just been described.

La nappe 4 étant amenée régulièrement, l'arbre 16, actionné par le moteur 15, provoque, par l'intermédiaire des renvois d'angle 17, la rotation des vilebrequins 34 des deux mécanismes et le mouvement oscillant des planches à aiguilles 6a, 6b.The ply 4 being brought in regularly, the shaft 16, actuated by the motor 15, causes, by means of the bevel gears 17, the rotation of the crankshafts 34 of the two mechanisms and the oscillating movement of the needle boards 6a, 6b .

Les renvois d'angle 17 sont disposés de manière à faire tourner les deux mécanismes en sens inverse l'un de l'autre, avec un calage tel que les bielles 11a, 11b d'une part, et 12a, 12b d'autre part, soient constamment symétriques par rapport au plan médian longitudinal de la machine. La constance de ce calage est obtenue grâce à la transmission par courroie crantée.The bevel gear 17 are arranged so as to rotate the two mechanisms in opposite directions to one another, with a setting such that the connecting rods 11a, 11b on the one hand, and 12a, 12b on the other hand , are constantly symmetrical with respect to the longitudinal median plane of the machine. The constancy of this setting is obtained thanks to the transmission by toothed belt.

Il ressort de la description qui précède, et des figures, que tous les ensembles tels que 7a sont très facilement accessibles aux fins de démontage éventuel, les uns par l'arrière (indice a), les autres par l'avant (indice b), sans aucun démontage autre que celui d'un simple capot de protection qui n'a d'ailleurs pas été représenté et qui n'est pas obligatoire.It appears from the above description, and from the figures, that all of the assemblies such as 7a are very easily accessible for possible disassembly, some from the rear (index a), the others from the front (index b) , without any disassembly other than that of a simple protective cover which has not, moreover, been shown and which is not compulsory.

Malgré ce caractère apparent et accessible, les mécanismes sont fixés sur le bâti de manière très bien équilibrée, en raison de leur symétrie par rapport à l'âme 9 de la poutre 1.Despite this apparent and accessible nature, the mechanisms are fixed to the frame in a very well balanced manner, due to their symmetry with respect to the core 9 of the beam 1.

Un autre avantage important de l'invention ressortira encore de la considération de certaines variantes de construction.Another important advantage of the invention will emerge from the consideration of certain construction variants.

En référence aux figs 10 et 11, chaque planche à aiguilles peut être divisée dans le sens de la longueur en un certain nombre de segments, par exemple deux segments 106a, 106b (fig. 10), ou trois segments 206a, 206b, 206c, chacun de ces segments étant animé par un module de deux mécanismes, un module étant l'ensemble d'un des mécanismes représentés sur la fig. 1. Pour une même largeur utile, on dispose ainsi d'une puissance de frappe respectivement deux fois ou trois fois plus forte.With reference to FIGS. 10 and 11, each needle board can be divided lengthwise into a number of segments, for example two segments 106a, 106b (FIG. 10), or three segments 206a, 206b, 206c, each of these segments being driven by a module of two mechanisms, a module being the assembly of one of the mechanisms shown in FIG. 1. For the same useful width, we thus have a striking power twice or three times respectively.

Tous ces modules étant identiques, l'économie de construction et d'entretien qui en résulte est très importante.All these modules being identical, the resulting saving in construction and maintenance is very significant.

Les divers mécanismes ainsi alignés sur la poutre 1 sont séparés les uns des autres par des cloisons 65 qui jouent le rôle de raidisseurs et qui confèrent à la poutre 1 une rigidité d'autant plus forte que les mécanismes qui la sollicitent sont nombreux.The various mechanisms thus aligned on the beam 1 are separated from each other by partitions 65 which play the role of stiffeners and which give the beam 1 a rigidity that is all the stronger as the mechanisms which request it are numerous.

L'invention conserve tous ses avantages dans son application à une aiguilleteuse à frappe inférieure (figs 12 et 13). Dans ce cas, la poutre 1 est située en position basse et les ensembles bielle-manivelle 7a et 7b sont encore aussi aisément accessibles par l'avant ou par l'arrière de la machine.The invention retains all of its advantages in its application to a needle punch with lower impact (figs 12 and 13). In this case, the beam 1 is located in the low position and the rod-crank assemblies 7a and 7b are also as easily accessible from the front or from the rear of the machine.

La frappe inférieure peut être obtenue par deux planches 6a, 6b (fig. 12), ou par une planche unique 6 (fig. 13).The lower strike can be obtained by two boards 6a, 6b (fig. 12), or by a single board 6 (fig. 13).

Les deux types de frappe peuvent d'ailleurs être combinés (fig. 14). On prévoit alors deux poutres 1 et 1a, l'une au-dessus, l'autre au-dessous, qui portent respectivement des ensembles 7a, 7b actionnant deux planches supérieures 6a, 6b et des ensembles 70a, 70b actionnant deux planches inférieures 60a, 60b. Tous ces ensembles bielle-manivelle sont encore parfaitement accessibles par l'avant et par l'arrière.The two types of striking can also be combined (fig. 14). Two beams 1 and 1a are then provided, one above, the other below, which respectively carry assemblies 7a, 7b actuating two upper boards 6a, 6b and assemblies 70a, 70b actuating two lower boards 60a, 60b. All these rod-crank assemblies are still perfectly accessible from the front and from the rear.

On peut encore combiner les deux types de frappe non plus simultanément, mais successivement (fig. 15). L'aiguilleteuse est alors pratiquement dédoublée en deux demi-machines parcourues successivement par la nappe 4. Une poutre 1 est en position haute et une poutre 1a est en position basse. Les ensembles extrêmes 7b et 70b sont accessibles directement par l'avant et par l'arrière respectivement. Quant aux ensembles 7a et 70a, ils sont accessibles presqu'aussi facilement grâce aux dégagements supérieur et inférieur laissés par l'autre demi-machine.The two types of strikes can still be combined not simultaneously, but successively (fig. 15). The needling machine is then practically split into two half-machines traversed successively by the ply 4. A beam 1 is in the high position and a beam 1a is in the low position. The extreme assemblies 7b and 70b are accessible directly from the front and from the rear respectively. As for the assemblies 7a and 70a, they are accessible almost as easily thanks to the upper and lower clearances left by the other half-machine.

Là encore, tous les mécanismes sont pratiquement identiques et le caractère modulaire de l'aiguilleteuse est conservé.Here again, all the mechanisms are practically identical and the modular nature of the needling machine is preserved.

L'invention permet donc de réaliser une gamme complète d'aiguilleteuses, susceptible de répondre à tous les besoins en conservant ses caractères fondamentaux d'accessibilité du mécanisme et de modularité.The invention therefore makes it possible to produce a complete range of needling machines, capable of meeting all needs while retaining its basic characteristics of accessibility of the mechanism and modularity.

Bien entendu, l'invention n'est pas limitée aux exemples décrits mais couvre encore toute variante de réalisation.Of course, the invention is not limited to the examples described but also covers any variant embodiment.

Claims (15)

1. Needle-felting machine for non-woven fabrics, comprising a frame provided with a guide path (3) for the fabric and means (5) for advancing said fabric on said path, at least one board (6, 6a, 6b; 60a, 60b) substantially parallel to the fabric and provided with needles, and an excentric and connecting rod rise and fall mechanism for driving said board with an alternating motion substantially perpendicular to the fabric, in order to cause the needles to penetrate the fabric, characterized in that said mechanism comprises two pairs (7a, 7b; 8a, 8b) of crank-rod assemblies, the assemblies making up a pair being coupled mechanically and each arranged one side of the same beam (1) positioned transversally with respect to the direction of advance of the fabric.
2. Needle-felting machine according to claim 1, characterized in that the beam (1) has an I-shaped cross-section and in that its web (9) is pierced by a succession of apertures (31) equal in number to the pairs of coupled crank-rod assemblies, each aperture being traversed by a sleeve (27) within which a crank-shaft (34) is rotatably mounted, said crank-shaft having excentric crank-pins (35a, 35b) bearing the connecting rod big ends (36a, 36b).
3. Needle-felting machine according to claim 2, characterized in that the rods (11a, 11b) of each crank-rod assembly run through one of the flanges (13) of the beam (1) in openings (14) arranged on either side of the web (9).
4. Needle-felting machine according to either of claims 2 and 3, characterized in that each pair (7a, 7b; 8a, 8b) of crank-rod assemblies includes two fly-wheels provided with balance weights (42a, 42b) rotatably integral with the crank-shaft (34).
5. Neeole-felting machine according to claim 4, characterized in that the fly-wheels (37a, 37b) of each pair of crank-rod assemblies have a rim (39a, 39b) enveloping the ends of the sleeve (27) passing through the beam (1) and in that the balance weights (42a, 42b) are housed between the sleeve (27) and the aforesaid rim (39a, 39b).
6. Needle-felting machine according to either of claims 4 and 5, characterized in that the rotary drive means of each pair of crank-rod assemblies comprise a drive pinion (18) which is connected to one of the fly-wheels (37a) of the assembly concerned by a notched belt (43) mounted on the periphery of said fly-wheel.
7. Needle-felting machine according to one of claims 2 to 6, characterized in that the drive means for the rise and fall mechanism comprise a motor (15) borne by the I-section beam (1) of the frame, which actuates a distribution shaft (16) mounted parallel to this beam, said shaft driving a group of drive pinions (18) each connected to one of the pairs of crank-rod assemblies placed on each side of the web of the beam, each drive pinion (18) receiving its motion from an angular counter-motion mechanism (17) passing through the web (9) of the beam.
8. Needle-felting machine according to one of claims 1 to 7, characterized in that it comprises means (19, 21) for coupling and guiding in substantially vertical movement the connecting rod small ends (22a, 22b; 23a, 23b) of each pair of crank-rod assemblies, these connecting rod small ends being articulated to the movable beam bearing the needle board (6, 6a, 6b, 60a, 60b).
9. Needle-felting machine according to claim 8, characterized in that the means (19, 21) for coupling and guiding the connecting rod small ends (22a, 22b; 23a, 23b) of each pair of crank-rod assemblies comprise an axle (51) on which said connecting rod small ends are articulated, said axle bearing also a coupling link (52) rotatably mounted on it and articulated through its two ends on two respective crank arms (54, 55) themselves each articulated to the frame of the machine.
10. Needle-felting machine according to claim 9, characterized in that the beam (1) of the frame has an I-shaped cross-section, in that the rods (11a, 11b) of each pair of coupled crank-rod assemblies pass through one of the flanges (13) of the beam symmetrically with respect to the web (9) and in that the connecting rod small end (22a, 22b; 23a, 23b) coupling and guide means (19, 21) are borne by the flange (13) in question of the beam and are arranged in extension of the web (9) of the latter.
11. Needle-felting machine according to one of claims 1 to 10, characterized in that it comprises a certain number of crank-rod assembly pairs (7a, 7b; 8a 8b) aligned transversally with respect to the direction of advance of the fabric.
12. Needle-felting machine according to claim 11, having an I-shaped cross-section beam (1) and characterized in that each pair (7a, 7b) of crank-rod assemblies of the beam is separated from the following pair (8a, 8b) by bracing partitions (65) mounted between the flanges.
13. Needle-felting machine according to either of claims 11 and 12, characterized in that it has a modular structure, these pairs of assemblies being substantially identical with one another and interchangeable.
14. Needle-felting machine according to one of claims 1 to 13, characterized in that each of the two connecting rods (11a, 11b) of the same pair is connected to a separate needle board (6a, 6b), each of said boards being connected to two connection rods belonging to two different pairs of rods (7a, 7b; 8a, 8b).
15. Needle-felting machine according to one of claims 1 to 13, characterized in that the four connecting rods forming two pairs (7a, 7b; 8a, 8b) are connected to the same needle board (6).
EP80401291A 1979-09-28 1980-09-10 Needling machine for non-woven mats Expired EP0026690B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80401291T ATE4732T1 (en) 1979-09-28 1980-09-10 NEEDLE MACHINE FOR NON-WOVEN MATS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7924222 1979-09-28
FR7924222A FR2466557A1 (en) 1979-09-28 1979-09-28 NEEDLEHOLDER FOR NON-WOVEN NAPPES

Publications (2)

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EP0026690A1 EP0026690A1 (en) 1981-04-08
EP0026690B1 true EP0026690B1 (en) 1983-09-21

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EP80401291A Expired EP0026690B1 (en) 1979-09-28 1980-09-10 Needling machine for non-woven mats

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US (1) US4384393A (en)
EP (1) EP0026690B1 (en)
AT (1) ATE4732T1 (en)
DE (1) DE3064947D1 (en)
FR (1) FR2466557A1 (en)

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CN103924387B (en) * 2014-04-18 2016-04-06 江苏迎阳无纺机械有限公司 The building block system rack construction of needing machine

Also Published As

Publication number Publication date
ATE4732T1 (en) 1983-10-15
FR2466557B1 (en) 1983-04-15
FR2466557A1 (en) 1981-04-10
EP0026690A1 (en) 1981-04-08
DE3064947D1 (en) 1983-10-27
US4384393A (en) 1983-05-24

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