EP0796363B1 - Needle loom with a sliding shank - Google Patents
Needle loom with a sliding shank Download PDFInfo
- Publication number
- EP0796363B1 EP0796363B1 EP95942219A EP95942219A EP0796363B1 EP 0796363 B1 EP0796363 B1 EP 0796363B1 EP 95942219 A EP95942219 A EP 95942219A EP 95942219 A EP95942219 A EP 95942219A EP 0796363 B1 EP0796363 B1 EP 0796363B1
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- EP
- European Patent Office
- Prior art keywords
- rod
- sliding
- sliding rod
- connecting rod
- needling machine
- 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
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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
Definitions
- the present invention relates to a needling machine used to mechanically consolidate a layer of fibers for example from a lapper spreader.
- Known needling machines have a support called a board on which needles are attached. At connecting rod-crank devices, the board is reciprocated so that these needles cross the web of fibers at a rate of production can be of the order of 1000 to 2000 shots per minute.
- the alternative movement of the needle board is obtained thanks to a connecting rod-crank device.
- Complementary devices allow also to regulate the incoming fiber flow and leaving the machine with or without stretching and at speeds chosen according to the striking rate in number of strokes per minute, equivalent to the number of alternative movements of the hands per minute.
- each connecting rod-crank device extends between a eccentric connected to a motor, and a joint to the end of a sliding rod to which is attached a needle board support.
- the sliding rod crosses two bearings sliding located at a certain distance one of the other.
- GB-A-1 343 763 certainly offers a provision according to which the articulation between rod and rod is placed inside the tubular rod.
- the crank side sliding bearing can be placed closer to the crank because the joint can at least for certain angular positions of the crank engage in the sliding bearing.
- the bearings then have a very large diameter and it turns out in practice that their tightness is then difficult to achieve.
- the rod is heavy and the whole is expensive.
- US-A-3 798 717 and FR-A-2 224 579 remedy this difficulty by placing the joint so that it is always between the upper and lower sliding bearings but the whole then becomes mechanically very complex and expensive.
- the object of the present invention is thus to offer a simple needling machine that can operate at high speed continuously and with a favorable vibrational behavior.
- the rod and the bearing side crank have a robustness considerable in the busiest area, in the vicinity of the articulation with the connecting rod.
- the other tier, minus loaded, has a reduced diameter. So the stem is lightened where possible, which reduces its inertia.
- the sliding guide obtained is more rigorous than with two large diameter bearings, because the difference in diameter increases the actual distance between the two guides, relative to the distance measured along the axis. So we can shorten the rod, and thus increase the rigidity of the mechanism with regard to lateral forces, exerted in particular by moving fibers that tend to drag the board with needles.
- the guidance performed is also less sensitive to thermal differences because variations dimensions on the small diameter bearing are smaller, in absolute value.
- the small step diameter is less expensive, and its tightness, when necessary, is easier to achieve.
- the rod is made tubular on at least part of its length from the end turned towards the connecting rod.
- the articulation between the rod and the connecting rod is produced inside the rod. It is then very preferable that at least during part of the stroke of the sliding rod, the axis of said articulation between the connecting rod and the sliding rod is located in the axial extent covered by the two sliding bearings and by the interval between them.
- the attached figure is a schematic view in elevation, with partial cut and tearing, of a needling machine according to the invention.
- the needling machine shown in the figure includes a perforated table 1 generally horizontal and a retaining plate 2, also called “stripper", placed approximately parallel to a certain distance above table 1.
- Table 1 and stripper 2 define a path between them in a plane substantially horizontal for a sheet of fibers 3.
- the stripper 2 includes perforations aligned with those in table 1.
- introducer means 4 shown schematically in the form a pair of motor rollers between which the tablecloth 3.
- extractor means 6 also shown diagrammatically by two motor rollers between which the tablecloth passes.
- a needle board 7 is positioned opposite from the face of the stripper 2 opposite the path for the sheet 3.
- the board 7 carries on the side of the stripper 2 a large number of needles 8 oriented perpendicularly in the plan of the path for the sheet 3, with their point directed towards the web 3.
- Each needle is positioned opposite a perforation in stripper 2 and a corresponding perforation of table 1.
- the plank needles 7 is fixed, on the opposite side to needles 8, to a support 9 itself fixed to the end of at least one rod 11 slidingly mounted in a direction 12 parallel to needles 8 and perpendicular to the plane of path of the sheet 3. If several rods 11 are provided, these are for example aligned one behind others when seen in the way shown in the single figure.
- each sliding rod 11 is guided in two coaxial sliding bearings 13 and 14 integral with a frame 16 which is only partially represented. Bearings 13 and 14 have rings anti-friction 17 for contact with the rod 11.
- the mobile equipment consisting of the rod (s) 11, the support 9 and the board 7 is animated in service with an alternating movement of going and comes in direction 12 between a position 7a in which needles, the end of which is in this case designated by 8a, crosses the stripper 2, the tablecloth 3 and table 1, and a release position 7b in which the needles 8 are completely released at less than table 1 and tablecloth 3, and possibly stripper 2.
- the rod 11 is articulated by a articulation 18 at one end of a connecting rod 19 of which the other end is connected by a hinge 21 to a crank 22 rotated by means motors not shown.
- the frame 16 defines a casing closed containing the rod-crank assembly 21, 22 and the bearing 13 which is closest thereto. Landing 14 forms the lower limit of the closed housing.
- a oil seal 32 is fixed to the frame 16 around the rod 11 on the side of the support 9 relative to the bearing 14 to prevent the lubricant bearings 14, 17 and the rod-crank assembly, to leak from the closed casing along the rod 11 towards the needling area.
- the rod 11 comprises from its end 27 facing the connecting rod 19, a first region 28 which is made tubular with the interior space of the tube emerging through the end 27.
- the first region 28 has a cylindrical outer wall which is engaged slidingly in that 13 of the bearings 13 and 14 which is closest to the crank 22.
- the rod 11 further comprises a second region 32 which has a smaller diameter than the first region 28.
- the second region 32 is made full, that is to say in particular non-tubular, and its outer wall cylindrical slides in the bearing 14 which is the most close to needle board 7, and in the sealing device 32.
- the geometric axis 23 of the joint 18 between the rod 11 and the connecting rod 19, which extends parallel at the plane of the path of the web 3, is located, at least during part of the back and forth race, in the axial extent A covered by the two bearings 13 and 14 and between them, in other words between plans 24 and 26 which each limit one of the landings 13 and 14 on the side opposite the other bearing 14 or respectively 13.
- axis 23 is always located in the axial extent A.
- the joint 18 is carried out in the interior space 29 of the region tubular 28 and the connecting rod 19 is engaged in the space inside 29 by the open end 27.
- the connecting rod 19 has a contour having a constriction 31 substantially in the plane of the end 27 of the rod 11 for allow the connecting rod 19 to undergo its deflection angular about the axis 23 of the joint 18 without that the opening at the end 27 must have too much large dimensions.
- the rod 19 can be made longer than traditionally and the axial extent A can also be particularly large without the bulk of the needling machine is prohibitive since these two dimensions partially overlap. Thanks to the connecting rod 19 long, its maximum angular movement D is particularly weak for a race predetermined back and forth of needles 8. This minimizes parasitic lateral forces on the bearings 13 and 14 as well as certain types of vibration. Thanks to the axial extent A, the guide of the sliding rod It is of very good quality. Like the joint 18 no longer cantilevered from bearings 13 and 14, service efforts are less harmful to the bearings 13 and 14. The rod 11 undergoes less than bending. It is further reinforced by its structure tubular. The bearing 13 which is in service the most loaded has a considerably increased diameter which makes it particularly wear-resistant.
- the needling machine according to the invention is capable of operating continuously at very high rates.
- the connecting rod does not have to have a throttling, even in the event that it is articulated to inside a tubular region of the stem. For that, we can go up a little the joint 18 or increase the inside diameter of the end 27.
- the invention is applicable to all types needling machine, in particular table needling machine perforated as described by way of example, but also velvet making needle, product to loops etc ...
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Looms (AREA)
- Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)
- Finger-Pressure Massage (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Knitting Machines (AREA)
Abstract
Description
La présente invention concerne une aiguilleteuse servant à consolider mécaniquement une nappe de fibres issue par exemple d'un étaleur nappeur.The present invention relates to a needling machine used to mechanically consolidate a layer of fibers for example from a lapper spreader.
Les aiguilleteuses connues comportent un support appelé planche sur lequel sont fixées des aiguilles. Au moyen de dispositifs bielle-manivelle, la planche est animée d'un mouvement alternatif afin que ces aiguilles traversent la nappe de fibres à une cadence de production pouvant être de l'ordre de 1000 à 2000 coups par minute.Known needling machines have a support called a board on which needles are attached. At connecting rod-crank devices, the board is reciprocated so that these needles cross the web of fibers at a rate of production can be of the order of 1000 to 2000 shots per minute.
Le mouvement alternatif de la planche à aiguilles est obtenu grâce à un dispositif bielle-manivelle.The alternative movement of the needle board is obtained thanks to a connecting rod-crank device.
Des dispositifs complémentaires permettent également de réguler le flux de fibres entrant et sortant de la machine avec ou sans étirage et à des vitesses choisies en fonction de la cadence de frappe en nombre de coups par minute, équivalent du nombre de mouvements alternatifs des aiguilles par minute.Complementary devices allow also to regulate the incoming fiber flow and leaving the machine with or without stretching and at speeds chosen according to the striking rate in number of strokes per minute, equivalent to the number of alternative movements of the hands per minute.
L'inconvénient majeur de ces aiguilleteuses réside en la limitation de leurs vitesses, incompatible avec l'augmentation des capacités de production. En effet, le marché demande des machines de plus en plus rapides.The major drawback of these needling machines is by limiting their speeds, incompatible with increased production capacity. Indeed, the market demands ever faster machines.
De manière classique, la bielle de chaque dispositif bielle-manivelle s'étend entre un excentrique relié à un moteur, et une articulation à l'extrémité d'une tige coulissante à laquelle est fixé un support de planche à aiguilles. Pour son coulissement, la tige coulissante traverse deux paliers de coulissement situés à une certaine distance l'un de l'autre.Conventionally, the connecting rod of each connecting rod-crank device extends between a eccentric connected to a motor, and a joint to the end of a sliding rod to which is attached a needle board support. For his sliding, the sliding rod crosses two bearings sliding located at a certain distance one of the other.
Cette disposition a de multiples inconvénients. Lorsque la planche est à son extrémité de course dans laquelle les aiguilles sont dégagées du produit, l'articulation de la tige est éloignée des paliers et par conséquent la bielle applique les efforts à la tige dans de mauvaises conditions de guidage, créant des moments de flexion importants dans la tige et des contraintes importantes sur les paliers. Pour alléger le système et réduire son encombrement en hauteur, on est tenté de réduire la longueur de la bielle. Mais ceci accroít le débattement angulaire de la bielle autour de l'articulation avec la tige coulissante, et accroít donc la valeur de la composante d'effort transversale, indésirable, qui est transmise aux paliers de coulissement de la tige. C'est surtout le palier qui est le plus proche de l'articulation qui est dangereusement chargé, typiquement trois à dix fois plus que l'autre. Ces paliers subissent leur charge maximale, avec une tendance à l'arc-boutement d'autant plus forte que la bielle est inclinée, lorsque la bielle pousse la tige pour faire pénétrer les aiguilles dans les produits fibreux. Au lieu de raccourcir la bielle, on peut envisager de raccourcir la tige coulissante. Mais ceci conduirait à rapprocher exagérément les deux paliers de coulissement au point que la tige ne serait plus guidée avec suffisamment de rigueur. Ainsi, on s'est contenté jusqu'à présent d'ensembles encombrants, dont les équipages mobiles sont lourds, et qui produisent par conséquent beaucoup de vibrations, tout en obligeant les constructeurs à limiter la vitesse de fonctionnement.This arrangement has multiple drawbacks. When the board is at its stroke end in which needles are released from the product, the articulation of the rod is distant from the bearings and therefore the connecting rod applies the forces to the rod in poor guidance conditions, creating significant bending moments in the rod and significant constraints on the bearings. To lighten the system and reduce its overall height, we is tempted to reduce the length of the connecting rod. But this increases the angular movement of the connecting rod around the joint with the sliding rod, and therefore increases the value of the effort component transverse, undesirable, which is transmitted to rod sliding bearings. It is especially the bearing which is closest to the joint which is dangerously charged, typically three to ten times more than the other. These bearings undergo their load maximum, with a tendency to brace as much stronger than the connecting rod is tilted, when the connecting rod pushes the rod to penetrate the needles in fibrous products. Instead of shortening the connecting rod, we can consider shortening the rod sliding. But this would lead to bringing exaggeratedly the two sliding bearings at the point that the rod would no longer be guided with enough rigor. So we've been content so far bulky sets, including mobile equipment are heavy, and therefore produce a lot vibrations, while forcing manufacturers to limit the operating speed.
Le GB-A-1 343 763, propose certes une disposition selon laquelle l'articulation entre bielle et tige est placée à l'intérieur de la tige réalisée tubulaire. Ainsi, le palier de coulissement côté manivelle peut être placé plus près de la manivelle car l'articulation peut au moins pour certaines positions angulaires de la manivelle s'engager dans le palier de coulissement. Mais les paliers ont alors un très grand diamètre et il s'avère en pratique que leur étanchéité est alors difficile à réaliser. La tige est lourde et l'ensemble est coûteux. Le US-A-3 798 717 et le FR-A-2 224 579 remédient à cette difficulté en plaçant l'articulation de manière qu'elle soit toujours située entre les paliers de coulissement supérieur et inférieur mais l'ensemble devient alors mécaniquement très complexe et coûteux.GB-A-1 343 763, certainly offers a provision according to which the articulation between rod and rod is placed inside the tubular rod. Thus, the crank side sliding bearing can be placed closer to the crank because the joint can at least for certain angular positions of the crank engage in the sliding bearing. But the bearings then have a very large diameter and it turns out in practice that their tightness is then difficult to achieve. The rod is heavy and the whole is expensive. US-A-3 798 717 and FR-A-2 224 579 remedy this difficulty by placing the joint so that it is always between the upper and lower sliding bearings but the whole then becomes mechanically very complex and expensive.
Le but de la présente invention est ainsi de proposer une aiguilleteuse simple pouvant fonctionner à grande vitesse de manière continue et avec un comportement vibratoire favorable.The object of the present invention is thus to offer a simple needling machine that can operate at high speed continuously and with a favorable vibrational behavior.
Suivant l'invention, l'aiguilleteuse pour consolider mécaniquement une nappe de fibres comportant,
- des moyens pour faire défiler la nappe de fibres,
- un équipage mobile comprenant un support de planche à aiguilles et au moins une tige montée coulissante selon une direction transversale à la nappe dans deux paliers de coulissement espacés axialement,
- pour chaque tige une bielle ayant une première extrémité articulée à une manivelle motrice et une deuxième extrémité reliée à la tige par une articulation, pour transmettre au support un mouvement alternatif de va et vient,
- means for scrolling through the sheet of fibers,
- a moving assembly comprising a needle board support and at least one rod mounted to slide in a direction transverse to the ply in two sliding bearings spaced axially,
- for each rod, a connecting rod having a first end articulated to a driving crank and a second end connected to the rod by an articulation, to transmit to the support an alternating movement back and forth,
Grâce à l'adoption de deux diamètres différents pour la tige et les paliers de coulissement, tous les problèmes évoqués ci-dessus sont résolus. La tige et le palier côté manivelle présentent une robustesse considérable dans la zone la plus chargée, au voisinage de l'articulation avec la bielle. L'autre palier, moins chargé, a un diamètre réduit. Ainsi la tige est allégée là où cela est possible, ce qui réduit son inertie. En outre, le guidage en coulissement obtenu est plus rigoureux qu'avec deux paliers de grand diamètre, car la différence de diamètre augmente la distance réelle entre les deux guidages, par rapport à la distance mesurée le long de l'axe. On peut donc raccourcir la tige, et accroítre ainsi la rigidité du mécanisme à l'égard des efforts latéraux, exercés notamment par les fibres en mouvement qui tendent à entraíner la planche à aiguilles. Le guidage réalisé est en outre moins sensible aux écarts thermiques car les variations dimensionnelles sur le palier de petit diamètre sont moins grands, en valeur absolue. Le palier de petit diamètre est moins coûteux, et son étanchéité, lorsqu'elle est nécessaire, est plus facile à réaliser.Thanks to the adoption of two different diameters for rod and slide bearings, all above problems are resolved. The rod and the bearing side crank have a robustness considerable in the busiest area, in the vicinity of the articulation with the connecting rod. The other tier, minus loaded, has a reduced diameter. So the stem is lightened where possible, which reduces its inertia. In in addition, the sliding guide obtained is more rigorous than with two large diameter bearings, because the difference in diameter increases the actual distance between the two guides, relative to the distance measured along the axis. So we can shorten the rod, and thus increase the rigidity of the mechanism with regard to lateral forces, exerted in particular by moving fibers that tend to drag the board with needles. The guidance performed is also less sensitive to thermal differences because variations dimensions on the small diameter bearing are smaller, in absolute value. The small step diameter is less expensive, and its tightness, when necessary, is easier to achieve.
De préférence, la tige est réalisée tubulaire sur une partie au moins de sa longueur à partir de l'extrémité tournée vers la bielle. De manière encore davantage préférée, l'articulation entre la tige et la bielle est réalisée à l'intérieur de la tige. Il est alors très préférable qu'au moins pendant une partie de la course de la tige coulissante, l'axe de ladite articulation entre la bielle et la tige coulissante soit situé dans l'étendue axiale couverte par les deux paliers de coulissement et par l'intervalle situé entre eux.Preferably, the rod is made tubular on at least part of its length from the end turned towards the connecting rod. So again more preferred, the articulation between the rod and the connecting rod is produced inside the rod. It is then very preferable that at least during part of the stroke of the sliding rod, the axis of said articulation between the connecting rod and the sliding rod is located in the axial extent covered by the two sliding bearings and by the interval between them.
On peut ainsi augmenter la longueur de la bielle et par conséquent réduire son débattement angulaire sans modifier l'encombrement total mesuré selon la direction de coulissement en va et vient. En conséquence, d'une part les efforts transversaux parasites résultant du débattement angulaire de la bielle sont réduits, et en outre, grâce à la réduction ou à la suppression du porte-à-faux de ces forces relativement aux paliers, les moments de flexion produits par les forces parasites sont encore plus réduits.We can thus increase the length of the rod and consequently reduce its angular movement without modify the overall dimensions measured according to the direction sliding back and forth. As a result, share the parasitic transverse forces resulting from the angular deflection of the connecting rod are reduced, and in addition, by reducing or eliminating the overhang of these forces relative to the bearings, the bending moments produced by the forces parasites are even more reduced.
L'usure des paliers de coulissement, qui constituent l'un des points faibles traditionnels des aiguilleteuses, est alors réduite.The wear of the sliding bearings, which constitute one of the traditional weaknesses of needling machines, is then reduced.
D'autres particularités et avantages de l'invention ressortiront de la description ci-après, relative à un exemple non limitatif.Other features and advantages of the invention will emerge from the description below, relating to a nonlimiting example.
La figure annexée est une vue schématique en élévation, avec coupe partielle et arrachement, d'une aiguilleteuse selon l'invention.The attached figure is a schematic view in elevation, with partial cut and tearing, of a needling machine according to the invention.
L'aiguilleteuse représentée à la figure comprend
une table perforée 1 généralement horizontale et une
plaque de retenue 2, encore appelée "débourreur",
placée à peu près parallèlement à une certaine distance
au-dessus de la table 1. La table 1 et le débourreur 2
définissent entre-eux un trajet dans un plan
sensiblement horizontal pour une nappe de fibres 3. Le
débourreur 2 comprend des perforations alignées avec
celles de la table 1. A l'entrée du trajet sont placés
des moyens introducteurs 4 schématisés sous la forme
d'une paire de rouleaux moteurs entre lesquels passe la
nappe 3. A la sortie du trajet, la nappe 3 consolidée
et compactée par aiguilletage est entraínée par des
moyens extracteurs 6 également schématisés par deux
rouleaux moteurs entre lesquels passe la nappe.The needling machine shown in the figure includes
a perforated table 1 generally horizontal and a
Une planche à aiguilles 7 est positionnée en regard
de la face du débourreur 2 opposée au trajet pour la
nappe 3. La planche 7 porte du côté du débourreur 2 un
grand nombre d'aiguilles 8 orientées perpendiculairement
au plan du trajet pour la nappe 3, avec leur pointe
dirigée vers la nappe 3. Chaque aiguille est positionnée
en face d'une perforation du débourreur 2 et d'une
perforation correspondante de la table 1. La planche à
aiguilles 7 est fixée, du côté opposé aux aiguilles 8, à
un support 9 lui-même fixé à l'extrémité d'au moins une
tige 11 montée coulissante selon une direction 12
parallèle aux aiguilles 8 et perpendiculaire au plan du
trajet de la nappe 3. S'il est prévu plusieurs tiges 11,
celles-ci sont par exemple alignées les unes derrière
les autres lorsqu'elles sont vues de la manière
représentée à la figure unique. Pour son guidage
coulissant, chaque tige coulissante 11 est guidée dans
deux paliers de coulissement coaxiaux 13 et 14
solidaires d'un bâti 16 qui n'est que partiellement
représenté. Les paliers 13 et 14 comportent des bagues
antifriction 17 pour le contact avec la tige 11.A
L'équipage mobile constitué de la ou des tiges
coulissantes 11, du support 9 et de la planche 7 est
animé en service d'un mouvement alternatif de va et
vient selon la direction 12 entre une position 7a dans
laquelle les aiguilles, dont l'extrémité est dans ce
cas désignée par 8a, traverse le débourreur 2, la nappe
3 et la table 1, et une position de dégagement 7b dans
laquelle les aiguilles 8 sont totalement dégagées au
moins de la table 1 et de la nappe 3, et éventuellement
du débourreur 2.The mobile equipment consisting of the rod (s)
11, the
Pour communiquer ce mouvement de va et vient à
l'équipage mobile, la tige 11 est articulée par une
articulation 18 à une extrémité d'une bielle 19 dont
l'autre extrémité est reliée par une articulation 21 à
une manivelle 22 entraínée en rotation par des moyens
moteurs non représentés. Le bâti 16 définit un carter
fermé renfermant l'ensemble bielle-manivelle 21, 22 et
le palier 13 qui en est le plus proche. Le palier 14
forme la limite inférieure du carter fermé. Un
dispositif d'étanchéité à l'huile 32 est fixé au bâti
16 autour de la tige 11 du côté du support 9
relativement au palier 14 pour empêcher le lubrifiant
des paliers 14, 17 et de l'ensemble bielle-manivelle,
de fuir du carter fermé le long de la tige 11 vers la
zone d'aiguilletage.To communicate this back and forth movement to
the moving element, the
La tige 11 comporte à partir de son extrémité 27
tournée vers la bielle 19, une première région 28 qui
est réalisée tubulaire avec l'espace intérieur du tube
débouchant à travers l'extrémité 27. La première région
28 a une paroi extérieure cylindrique qui est engagée
de manière coulissante dans celui 13 des paliers 13 et
14 qui est le plus proche de la manivelle 22. La tige
11 comprend en outre une deuxième région 32 qui a un
plus petit diamètre que la première région 28. La
deuxième région 32 est réalisée pleine, c'est à dire en
particulier non tubulaire, et sa paroi extérieure
cylindrique coulisse dans le palier 14 qui est le plus
proche de la planche à aiguilles 7, et dans le
dispositif d'étanchéité 32.The
L'axe géométrique 23 de l'articulation 18 entre la
tige 11 et la bielle 19, lequel s'étend parallèlement
au plan du trajet de la nappe 3, est situé, au moins
pendant une partie de la course de va et vient, dans
l'étendue axiale A couverte par les deux paliers 13 et
14 et par l'intervalle entre-eux, autrement dit entre
les plans 24 et 26 qui limitent chacun l'un des paliers
13 et 14 du côté opposé à l'autre palier 14 ou
respectivement 13.The
Dans l'exemple représenté, l'axe 23 est toujours
situé dans l'étendue axiale A.In the example shown,
Pour réaliser cette condition, l'articulation 18
est réalisée dans l'espace intérieur 29 de la région
tubulaire 28 et la bielle 19 est engagée dans l'espace
intérieur 29 par l'extrémité ouverte 27. Lorsqu'elle
est vue selon une direction parallèle à ses axes
d'articulation comme à la figure unique, la bielle 19 a
un contour présentant un étranglement 31 sensiblement
dans le plan de l'extrémité 27 de la tige 11 pour
permettre à la bielle 19 de subir son débattement
angulaire autour de l'axe 23 de l'articulation 18 sans
que l'orifice de l'extrémité 27 doive avoir de trop
grandes dimensions.To achieve this condition, the joint 18
is carried out in the
La bielle 19 peut être réalisée plus longue que
traditionnellement et l'étendue axiale A peut également
être particulièrement grande sans que l'encombrement de
l'aiguilleteuse soit prohibitif puisque ces deux
dimensions se superposent partiellement. Grâce à la
bielle 19 longue, son débattement angulaire maximal D
est particulièrement faible pour une course
prédéterminée de va et vient des aiguilles 8. Ceci
minimise les efforts latéraux parasites sur les paliers
13 et 14 ainsi que certains types de vibration. Grâce à
l'étendue axiale A, le guidage de la tige coulissante
11 est de très bonne qualité. Comme l'articulation 18
n'est plus en porte-à-faux par rapport aux paliers 13
et 14, les efforts de service sont moins nocifs pour
les paliers 13 et 14. La tige 11 subit moins de
flexion. Elle est en outre renforcée par sa structure
tubulaire. Le palier 13 qui est en service le plus
chargé a un diamètre considérablement accru ce qui le
rend particulièrement résistant à l'usure.The
Grâce à ses nombreux avantages, l'aiguilleteuse selon l'invention est capable de fonctionner en continu à des cadences très élevées.Thanks to its many advantages, the needling machine according to the invention is capable of operating continuously at very high rates.
Bien entendu, l'invention n'est pas limitée à l'exemple décrit et représenté.Of course, the invention is not limited to the example described and shown.
On pourrait réaliser les tiges 11 tubulaires sur
toute leur longueur. On pourrait placer l'articulation
18 de manière qu'elle pénètre à peine dans l'étendue
axiale A quand les aiguilles sont dans la position 8a
de pénétration maximum.We could realize the
Il n'est pas nécessaire que la bielle présente un
étranglement, même dans le cas où elle est articulée à
l'intérieur d'une région tubulaire de la tige. Pour
cela, on peut remonter un peu l'articulation 18 ou
augmenter le diamètre intérieur de l'extrémité 27.The connecting rod does not have to have a
throttling, even in the event that it is articulated to
inside a tubular region of the stem. For
that, we can go up a little the joint 18 or
increase the inside diameter of the
L'invention est applicable à tous types d'aiguilleteuse, notamment aiguilleteuse à table perforée comme décrit à titre d'exemple, mais aussi aiguilleteuse de fabrication de velours, de produit à bouclettes etc...The invention is applicable to all types needling machine, in particular table needling machine perforated as described by way of example, but also velvet making needle, product to loops etc ...
Claims (9)
- Needling machine for mechanically consolidating a fibre fleece comprising,characterized in that the sliding rod (11) comprises a first region (28), of relatively large outer diameter, sliding through a first one (13) of the slide bearings, located nearer the crank (22) and having a corresponding relatively large diameter, the sliding rod (11) having a smaller diameter in a second region (32) sliding in the other bearing (14), having a corresponding smaller diameter, and located nearer the needle board support (9).means (1, 2, 4, 6) of causing the fibre fleece (3) to progress,a mobile system comprising a needle board support (9) and at least one rod (11) mounted such that it slides in a transverse direction (12) with respect to the fleece (3) in two axially spaced slide bearings (14),for each sliding rod (11), a connecting rod (19) having a first end (21) articulated with a drive crank (22) and a second end connected to the sliding rod (11) by an articulation (18), in order to transmit a reciprocating motion to the support (9),
- Needling machine according to Claim 1, characterized in that the sliding rod (11) is made tubular over at least a portion (28) of its length starting from the end (27) facing the connecting rod (19).
- Needling machine according to Claim 1 or 2, characterized in that the articulation (18) between the sliding rod (11) and the connecting rod (19) is formed inside the sliding rod (11).
- Needling machine according to Claim 3, characterized in that the axis (23) of the said articulation (18) is, at least over a portion of its reciprocating travel, in the axial extent (A) covered by the two slide bearings (13, 14) and by the distance between them.
- Needling machine according to Claim 3 or 4, characterized in that the connecting rod (19), seen in a direction parallel to the axis of articulation (18), has a narrowing (31) in the region traversing the tubular end (27) of the sliding rod (11).
- Needling machine according to one of Claims 1 to 5, characterized in that the articulation (18) between the connecting rod (19) and the sliding rod (11) is located between the slide bearings (13, 14).
- Needling machine according to one of Claims 1 to 6, characterized in that the sliding rod (11) is made tubular in the first region (28).
- Needling machine according to one of Claims 1 to 7, characterized in that the second region (32) of the sliding rod (11) is made solid.
- Needling machine according to one of Claims 1 to 8, characterized in that the second region (32) of the sliding rod (11) is surrounded by a sealing device (32).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9414760A FR2727990A1 (en) | 1994-12-08 | 1994-12-08 | SLIDING ROD NEEDLE |
| FR9414760 | 1994-12-08 | ||
| PCT/FR1995/001618 WO1996017987A1 (en) | 1994-12-08 | 1995-12-07 | Needle loom with a sliding shank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0796363A1 EP0796363A1 (en) | 1997-09-24 |
| EP0796363B1 true EP0796363B1 (en) | 1999-08-11 |
Family
ID=9469593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95942219A Expired - Lifetime EP0796363B1 (en) | 1994-12-08 | 1995-12-07 | Needle loom with a sliding shank |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US5822834A (en) |
| EP (1) | EP0796363B1 (en) |
| JP (1) | JPH10510328A (en) |
| CN (1) | CN1063500C (en) |
| AT (1) | ATE183255T1 (en) |
| CA (1) | CA2208426A1 (en) |
| DE (1) | DE69511427T2 (en) |
| ES (1) | ES2136323T3 (en) |
| FR (1) | FR2727990A1 (en) |
| TW (1) | TW284800B (en) |
| WO (1) | WO1996017987A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT408234B (en) * | 1999-10-08 | 2001-09-25 | Fehrer Textilmasch | DEVICE FOR NEEDING A FLEECE |
| US6568050B2 (en) | 2001-02-26 | 2003-05-27 | Messier-Bugatti | Method and installation for advancing a needled fiber plate |
| FR2887564B1 (en) * | 2005-06-22 | 2007-10-26 | Asselin Soc Par Actions Simpli | CLAMPING APPARATUS FOR CONSOLIDATING A FIBER TABLE |
| WO2008151961A1 (en) * | 2007-06-15 | 2008-12-18 | Oerlikon Textile Gmbh & Co. Kg | Device for needling a nonwoven web |
| US7845055B1 (en) | 2009-10-29 | 2010-12-07 | Mcneil-Ppc, Inc. | Tampon formed from a selectively needled nonwoven fabric web |
| CN101929038B (en) * | 2010-08-31 | 2012-02-01 | 东莞市爱克斯曼机械有限公司 | Oil-free high-speed needling machine |
| CN102296427A (en) * | 2011-08-12 | 2011-12-28 | 江苏省仪征市海润纺织机械有限公司 | Double-spindle transmission mechanism of high-speed needling machine |
| FR3109586B1 (en) * | 2020-04-23 | 2022-05-13 | Andritz Asselin Thibeau | Elliptical needling machine with sealed housing and tilting crossing guide pot |
| FR3109588B1 (en) * | 2020-04-23 | 2022-10-14 | Andritz Asselin Thibeau | Elliptical needling machine with sealed casing and crossing guide pot |
| CN114775174B (en) * | 2022-03-08 | 2023-04-14 | 嘉兴学院 | Needle plate capable of changing needle distribution position of needling machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1343763A (en) * | 1971-04-19 | 1974-01-16 | Bywater Ltd William | Apparatus for needling hair or fibre webs |
| US3798747A (en) * | 1972-06-06 | 1974-03-26 | Du Pont | Conversion-rolling of titanium/steel bonded composite |
| US3798717A (en) * | 1972-10-30 | 1974-03-26 | Hunter Machine Co J | Needle loom drives |
| GB1422546A (en) * | 1973-04-06 | 1976-01-28 | Weldstow Ltd | Needle looms |
| AT392297B (en) * | 1987-10-01 | 1991-02-25 | Fehrer Textilmasch | NEEDLE DEVICE FOR MAKING A PATTERNED FELT |
| AT392657B (en) * | 1989-02-15 | 1991-05-27 | Fehrer Textilmasch | DEVICE FOR NEEDING A TRACK OF GOODS |
-
1994
- 1994-12-08 FR FR9414760A patent/FR2727990A1/en active Granted
-
1995
- 1995-12-07 DE DE69511427T patent/DE69511427T2/en not_active Expired - Fee Related
- 1995-12-07 US US08/849,478 patent/US5822834A/en not_active Expired - Fee Related
- 1995-12-07 JP JP8517374A patent/JPH10510328A/en active Pending
- 1995-12-07 AT AT95942219T patent/ATE183255T1/en not_active IP Right Cessation
- 1995-12-07 CN CN95197486A patent/CN1063500C/en not_active Expired - Fee Related
- 1995-12-07 CA CA002208426A patent/CA2208426A1/en not_active Abandoned
- 1995-12-07 ES ES95942219T patent/ES2136323T3/en not_active Expired - Lifetime
- 1995-12-07 WO PCT/FR1995/001618 patent/WO1996017987A1/en not_active Application Discontinuation
- 1995-12-07 EP EP95942219A patent/EP0796363B1/en not_active Expired - Lifetime
- 1995-12-13 TW TW084113274A patent/TW284800B/zh active
Also Published As
| Publication number | Publication date |
|---|---|
| CN1063500C (en) | 2001-03-21 |
| ATE183255T1 (en) | 1999-08-15 |
| EP0796363A1 (en) | 1997-09-24 |
| CA2208426A1 (en) | 1996-06-13 |
| TW284800B (en) | 1996-09-01 |
| ES2136323T3 (en) | 1999-11-16 |
| FR2727990B1 (en) | 1997-02-28 |
| CN1174581A (en) | 1998-02-25 |
| WO1996017987A1 (en) | 1996-06-13 |
| JPH10510328A (en) | 1998-10-06 |
| FR2727990A1 (en) | 1996-06-14 |
| DE69511427T2 (en) | 2000-05-04 |
| US5822834A (en) | 1998-10-20 |
| DE69511427D1 (en) | 1999-09-16 |
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