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EP2274117A1 - Supply station - Google Patents

Supply station

Info

Publication number
EP2274117A1
EP2274117A1 EP09724551A EP09724551A EP2274117A1 EP 2274117 A1 EP2274117 A1 EP 2274117A1 EP 09724551 A EP09724551 A EP 09724551A EP 09724551 A EP09724551 A EP 09724551A EP 2274117 A1 EP2274117 A1 EP 2274117A1
Authority
EP
European Patent Office
Prior art keywords
rollers
bearing block
wire
station according
feeding station
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
EP09724551A
Other languages
German (de)
French (fr)
Other versions
EP2274117B1 (en
Inventor
Joël ETIENNE
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.)
Numalliance SAS
Original Assignee
Numalliance SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Numalliance SAS filed Critical Numalliance SAS
Publication of EP2274117A1 publication Critical patent/EP2274117A1/en
Application granted granted Critical
Publication of EP2274117B1 publication Critical patent/EP2274117B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F23/00—Feeding wire in wire-working machines or apparatus

Definitions

  • the invention relates to a wire feeding device in a wire forming machine.
  • a wire feeding device in a wire forming machine.
  • Such a machine numerically controlled on a wire (or a bar) metal various shaping operations such as for example bending, folding, etc. made by different posts mounted on a frame.
  • wire is a generic term used in the profession and encompasses both a wire itself as a bar or a tube.
  • One of the stations is the wire feed station whose function is to feed horizontally said wire along a running axis, to the tools of a forming station.
  • the wire is moved by the feeding station by means of grooved rollers operating in pairs and rotating in opposite directions from one another, generally the rollers are placed one above the other with a lower roller fixed and an upper roller movable vertically in one direction and the other.
  • the wire is clamped between the two rollers by relative approximation thereof and it is placed in the annular grooves of said rollers.
  • the movable roller is actuated by an actuator which defines the clamping force on the wire and which can be a screw, a pneumatic or hydraulic cylinder, an eccentric mechanism or other.
  • the number of pairs of rolls varies depending on the diameter of the wire and / or the shaping operations to be performed on it.
  • the object of the invention is to solve the problems of feeding devices of the prior art by limiting the number of parts and limiting the deflections generating the chisel effect.
  • a wire feeding station in a wire forming machine said station having grooved rollers operating in pairs and rotating in opposite directions from one another, the wire being pinched between said rollers by relative approximation thereof, characterized in that the two rollers of the same pair of drive rollers are carried forward of the same unit bearing block, said bearing block being elastically deformable for absorb a relative displacement of the rollers.
  • said bearing block also carries an endless transmission screw on which a pair of transmission wheels coaxial with the driving rollers which they drive in rotation mesh with.
  • a bearing block deforms so that a relative displacement of the rollers results in a rotation-deformation of the bearing block around the axis of the transmission screw.
  • FIG. 1a vertical sectional view of a device for feeding the prior art to a rotary shaft
  • FIGS. , 2b vertical cross-section and vertical cross-section, of a single-tier feeding device
  • FIGS. 3 and 4 general rear and front views of a device according to the invention with three bearing blocks of double rollers
  • FIG. 5 vertical section along the scrolling plane
  • FIG. 6 plan view
  • Figure 8 vertical section along BB of Figure 6.
  • a machine according to the invention is partially shown in Figures 5 to 8 which is an example of non-limiting implementation. It comprises a feeding station (1) which guides a wire (2) in a horizontal axis of travel (3) successively through a straightener (5) and a guide gun (4) before entering the position of then fed to a forming station (6) not shown in detail.
  • the feed station (1) shown comprises three unit bearing blocks such that (7) (this number is not limiting) secured to each other by tie rods (8).
  • a unitary bearing unit (7) according to the invention. It comprises a roller with lower groove (10) and a roller with upper groove (9) placed vertically one above the other, their peripheral guide grooves being in the same plane (P) called vertical guide plane.
  • rollers (9, 10) are carried and guided respectively by an upper bearing (11) and an upper bearing (12) carried on the front of the bearing block and are rotated by an upper transmission wheel (13) and a lower transmission wheel (14) which meshes with an endless transmission screw (15) driven in rotation by a motor not visible in the figures and placed at the end of the transmission screw in a cowling (16).
  • the worm (15) is carried by two lateral bearings (17) which maintain its horizontal axis of rotation (18), fixed parallel to the axis of travel (3) of the wire and behind it. It is noted that on the one hand the upper wheel (13) and the upper bearing (11) are mounted on a common axis (19), on the other hand, the lower wheel (14) and the lower bearing (12) are mounted on a common axis (20) and that the conformation of the unit bearing block (7) allows a relative movement of the two axes (19) and (20).
  • This relative displacement is generated by the fact that the bearing block is deformable thanks to a horizontal plane slot (21) opening on the front of the block and limited to the rear by a circular hole (22) opening laterally on the side and side. other block (see Figures 4 and 8).
  • the bearing block deforms when compressing the rollers (9, 10) by a compression means to create flexion-rotation about the axis of rotation of the worm (18).
  • the circular hole (22) is parallel to the axis (18) of a bore (19) of the bearing block and in which the worm (15) rotates, and at a distance therefrom which is calculated from in order to provide a wall thickness (23) towards the front of the bore (19) equivalent to the wall thickness (24) towards the rear of the bore (19).
  • This wall thickness (23) or (24) is calculated by the manufacturer according to the elasticity parameter of the material in which the bearing block is produced and according to the diameter of the bore (19).
  • a thickness (23) or (24) of 6 mm ⁇ 0.1 is provided.
  • a roller compression means A horizontal bar (25) provided on the top of the bearing block is carried by two vertical bars (26) made of steel.
  • a tensioning screw (27) placed between the spreader and a shoulder (28) of the bearing block (7) can raise or lower the spreader (25).
  • the bars (26) shaped straps at their upper end serve as a spring and ensure the force exerted by the rollers on the wire (2).
  • the bearing block further comprises an indexing means (29) for applying a predetermined clamping force.
  • This means (29) is for example a toothed wheel blocked by a stepped foot (30) mounted on a spring. By unlocking the foot it is possible to turn the wheel and lock it again in another predetermined position.
  • the clamping amplitude of the rollers is limited by construction to the minimum required to release or clamp the wire within its dimensional tolerance range.
  • the clamping amplitude is measured in the plane (P) is 0.25 mm on either side of the axis of movement (3). a total amplitude of the order of 0.5 mm.
  • the means for moving the rollers are removed and replaced by an elastic deformation of a single bearing block carrying the shafts of the two rollers, and absorbing the displacement of the rollers by elastic deformation of said bearing block. The deformation is calculated to result in a rotation around the axis of the drive screw which on the one hand does not modify the backlash and therefore the gearing of the transmission, and secondly reduces the chain of dimension between the two trees since it comes down to the distance between said trees.
  • This conformation makes it possible to be as compact as possible in terms of the size of the bearings required with regard to the forces and the level of the gear teeth and thus makes it possible to reduce as much as possible the inertia of the entire drive chain and therefore a possible increase of the dynamics.
  • This compact configuration allows a reduction in the number of parts and an increase in the positioning accuracy of the rollers with a reduced size chain.
  • This configuration is also modular because it allows to couple several bearing blocks (7) together according to the specifications of the work to be done and / or the wire to be shaped.
  • the figures show three bearing blocks coupled together by conventional coupling means for those skilled in the art to form a feeding station which is then fixed on the frame of the forming machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
  • Vending Machines For Individual Products (AREA)
  • Electron Tubes For Measurement (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

The invention relates to a wire feed station of a wire shaping machine, said station including grooved rollers functioning in pairs and rotating in reverse directions with respect to each other. The wire is clamped between said rollers by these moving closer to one another. Both rollers of the same pair of driving rollers are supported at the front of the same bearing block unit, said bearing block being elastically deformable to absorb a relative movement of the rollers. Preferably, said bearing block also supports an endless transmission screw on which are engaged a couple of transmission wheels coaxial with the driving rollers which they drive into rotation. More particularly, a bearing block is deformed so that a relative movement of the rollers results in a rotation-deformation of the bearing block about the transmission screw axis.

Description

Poste d 'aménage Development station
L'invention concerne un dispositif d'amenage de fil dans une machine de façonnage de fil métallique. Une telle machine, à commande numérique effectue sur un fil (ou sur une barre) métallique diverses opérations de façonnage telles que par exemple cambrage, pliage, etc.. réalisées par différents postes montés sur un bâti.The invention relates to a wire feeding device in a wire forming machine. Such a machine, numerically controlled on a wire (or a bar) metal various shaping operations such as for example bending, folding, etc. made by different posts mounted on a frame.
Le terme de fil métallique est un terme générique utilisé dans la profession et qui englobe aussi bien un fil proprement dit qu'une barre ou un tube. Un des postes est le poste d'amenage de fil qui a pour fonction d'alimenter horizontalement ledit fil selon un axe de défilement, vers les outils d'un poste de façonnage.The term wire is a generic term used in the profession and encompasses both a wire itself as a bar or a tube. One of the stations is the wire feed station whose function is to feed horizontally said wire along a running axis, to the tools of a forming station.
Le fil est déplacé par le poste d'amenage grâce à des galets à gorges fonctionnant par paire et tournant en sens inverse l'un de l'autre, généralement les galets sont placés l'un au dessus de l'autre avec un galet inférieur fixe et un galet supérieur déplaçable verticalement dans un sens et dans l'autre.The wire is moved by the feeding station by means of grooved rollers operating in pairs and rotating in opposite directions from one another, generally the rollers are placed one above the other with a lower roller fixed and an upper roller movable vertically in one direction and the other.
Le fil est pincé entre les deux galets par rapprochement relatif de ceux-ci et il est placé dans les gorges annulaires desdits galets.The wire is clamped between the two rollers by relative approximation thereof and it is placed in the annular grooves of said rollers.
Le galet mobile est actionné par un actionneur qui définit l'effort de serrage sur le fil et qui peut être une vis, un vérin pneumatique ou hydraulique, un mécanisme à excentrique ou autre.The movable roller is actuated by an actuator which defines the clamping force on the wire and which can be a screw, a pneumatic or hydraulic cylinder, an eccentric mechanism or other.
Le nombre de paires de galets varie en fonction du diamètre du fil et/ou des opérations de façonnage à effectuer sur celui-ci.The number of pairs of rolls varies depending on the diameter of the wire and / or the shaping operations to be performed on it.
On observe deux montages possibles des galets d'une même paire de galets, à savoir : montage où les arbres supportant les galets sont montés dans deux paliers, avec un palier arrière d'au moins un des arbres qui doit être rotulant ce qui génère, lors du rapprochement des galets un effet de ciseaux par désalignement des gorges périphériques annulaires des galets entre lesquelles défile le fil. Ce défaut tend à faire tourner le fil sur son axe de défilement au cours de l'avance du fil et génère des dispersions entre les pièces fabriquées en aval sur le poste de façonnage. Un montage de ce type est montré à titre d'exemple sur la figure 1a annexée un dispositif d'amenage où l'arbre (a) du galet supérieur non représenté est monté sur un palier rotulant c'est-à-dire monté sur un roulement à rotule (b) et actionné par un actionneur pneumatique (c). montage où les arbres qui supportent les galets sont chacun monté dans un palier unique, et où leur déplacement relatif fait intervenir des moyens de guidage tels que par exemples des colonnes, des guidages à patins ou autres. Dans ce type de montage le moindre jeu dans lesdits moyens de guidage (par exemple jeu de montage et/ou jeu d'usure) génère des défauts d'alignement des gorges périphériques des galets et génère donc les mêmes défauts qu'avec le montage précédent. Un montage de ce type est montré à titre d'exemple sur les figures 2a et 2b où le fil (d) est pincé entre deux paires de galets (e, f). Deux galets (e, f) d'une même paire sont montés sur un palier unique avec deux roulements de guidage (g, h) dans une même pièce, le moyen de guidage étant un guidage à colonne (i). Pour les deux types de montage précités, le nombre de pièces nécessaires au guidage des arbres est important ce qui implique une chaîne de cotes longues et une précision finale de guidage médiocre qui n'est pas satisfaisante compte tenu de répétabilité des pièces à façonner.Two possible assemblies of the rollers of the same pair of rollers can be observed, namely: assembly where the shafts supporting the rollers are mounted in two bearings, with a rear bearing of at least one of the shafts which must be rotulating which generates, when approaching the rollers a scissors effect by misalignment of the peripheral annular grooves of the rollers between which scrolls the wire. This defect tends to rotate the wire on its axis of travel during the advance of the wire and generates dispersions between the parts manufactured downstream on the forming station. An assembly of this type is shown by way of example in FIG. 1a attached to a feeding device in which the shaft (a) of the upper roller, not shown, is mounted on a swivel bearing that is to say mounted on a ball bearing (b) and actuated by a pneumatic actuator (c). assembly where the shafts that support the rollers are each mounted in a single bearing, and where their relative movement involves guide means such as for example columns, slide guides or others. In this type of assembly the slightest play in said guide means (for example mounting clearance and / or wear clearance) generates misalignment of the peripheral grooves of the rollers and thus generates the same defects as with the previous assembly. . An assembly of this type is shown by way of example in Figures 2a and 2b where the wire (d) is clamped between two pairs of rollers (e, f). Two rollers (e, f) of the same pair are mounted on a single bearing with two guide bearings (g, h) in one piece, the guide means being a column guide (i). For the two types of assembly mentioned above, the number of parts needed to guide the shafts is important, which implies a long chain of dimensions and a poor final guide accuracy which is not satisfactory given the repeatability of the workpieces.
Le but de l'invention est de résoudre les problèmes des dispositifs d'amenage de l'art antérieur en limitant le nombre de pièces ainsi qu'en limitant les débattements générant l'effet ciseau.The object of the invention is to solve the problems of feeding devices of the prior art by limiting the number of parts and limiting the deflections generating the chisel effect.
Ce but est atteint par un poste d'amenage d'un fil dans une machine de façonnage de fil, ledit poste comportant des galets à gorge fonctionnant par paire et tournant en sens inverse l'un de l'autre, le fil étant pincé entre lesdits galets par rapprochement relatif de ceux-ci, caractérisé en ce que les deux galets d'une même paire de galets d'entraînement sont portés à l'avant d'un même bloc-palier unitaire, ledit bloc- palier étant déformable élastiquement pour absorber un déplacement relatif des galets. Préférentiellement ledit bloc-palier porte également une vis de transmission sans fin sur laquelle s'engrènent un couple de roues de transmission coaxiales avec les galets d'entraînement qu'elles entraînent en rotation.This object is achieved by a wire feeding station in a wire forming machine, said station having grooved rollers operating in pairs and rotating in opposite directions from one another, the wire being pinched between said rollers by relative approximation thereof, characterized in that the two rollers of the same pair of drive rollers are carried forward of the same unit bearing block, said bearing block being elastically deformable for absorb a relative displacement of the rollers. Preferably, said bearing block also carries an endless transmission screw on which a pair of transmission wheels coaxial with the driving rollers which they drive in rotation mesh with.
Plus particulièrement un bloc-palier se déforme de sorte qu'un déplacement relatif des galets se traduit par une rotation-déformation du bloc-palier autour de l'axe de la vis de transmission.More particularly, a bearing block deforms so that a relative displacement of the rollers results in a rotation-deformation of the bearing block around the axis of the transmission screw.
On comprendra mieux l'invention à l'aide de la description ci-après faite en référence aux figures annexées suivantes : figure 1a : vue en coupe verticale d'un dispositif d'amenage de l'art antérieur à arbre rotulant, - figures 2a, 2b : coupe verticale de face et coupe verticale transversale, d'un dispositif d'amenage à palier unique, figures 3 et 4 : vues générales arrière et avant d'un dispositif selon l'invention à trois blocs-paliers de doubles galets, figure 5 : coupe verticale selon le plan de défilement, figure 6 : vue de dessus, - figure 7 : coupe verticale selon AA de la figure 6, figure 8 : coupe verticale selon BB de la figure 6.The invention will be better understood by means of the following description given with reference to the following appended figures: FIG. 1a: vertical sectional view of a device for feeding the prior art to a rotary shaft, FIGS. , 2b: vertical cross-section and vertical cross-section, of a single-tier feeding device, FIGS. 3 and 4: general rear and front views of a device according to the invention with three bearing blocks of double rollers, FIG. 5: vertical section along the scrolling plane, FIG. 6: plan view, FIG. vertical line AA of Figure 6, Figure 8: vertical section along BB of Figure 6.
Une machine selon l'invention est partiellement représentée sur les figures 5 à 8 qui constitue un exemple de mise en oeuvre non limitatif. Elle comporte un poste d'amenage (1 ) qui guide un fil (2) selon un axe de défilement (3) horizontal successivement à travers un redresseur (5) puis un canon de guidage (4) avant d'entrer dans le poste d'amenage puis dans un poste de façonnage (6) non représenté en détail.A machine according to the invention is partially shown in Figures 5 to 8 which is an example of non-limiting implementation. It comprises a feeding station (1) which guides a wire (2) in a horizontal axis of travel (3) successively through a straightener (5) and a guide gun (4) before entering the position of then fed to a forming station (6) not shown in detail.
Le poste d'amenage (1 ) représenté comporte trois blocs-paliers unitaires tels que (7) (ce nombre n'étant pas limitatif) solidarisés entre eux par des tirants (8).The feed station (1) shown comprises three unit bearing blocks such that (7) (this number is not limiting) secured to each other by tie rods (8).
On décrit à présent un bloc-palier unitaire (7) selon l'invention. Il comporte un galet à gorge inférieur (10) et un galet à gorge supérieur (9) placés verticalement l'un au dessus de l'autre, leurs gorges périphériques de guidage étant dans un même plan (P) vertical appelé plan de guidage.We now describe a unitary bearing unit (7) according to the invention. It comprises a roller with lower groove (10) and a roller with upper groove (9) placed vertically one above the other, their peripheral guide grooves being in the same plane (P) called vertical guide plane.
Les galets (9, 10) sont portés et guidés respectivement par un palier supérieur (11 ) et un palier supérieur (12) portés à l'avant du bloc palier et sont entraînés en rotation par une roue de transmission supérieure (13) et une roue de transmission inférieure (14) qui s'engrènent sur une vis de transmission sans fin (15) entraînée en rotation par un moteur non visible sur les figures et placé en bout de la vis de transmission dans un capotage (16).The rollers (9, 10) are carried and guided respectively by an upper bearing (11) and an upper bearing (12) carried on the front of the bearing block and are rotated by an upper transmission wheel (13) and a lower transmission wheel (14) which meshes with an endless transmission screw (15) driven in rotation by a motor not visible in the figures and placed at the end of the transmission screw in a cowling (16).
La vis sans fin (15) est portée par deux paliers latéraux (17) qui maintiennent son axe de rotation horizontal (18), fixe parallèle à l'axe de défilement (3) du fil et en arrière de celui-ci. On note que d'une part la roue supérieure (13) et le palier supérieur (11 ) sont montés sur un axe commun (19), que d'autre part, la roue inférieure (14) et le palier inférieur (12) sont montés sur un axe commun (20) et que la conformation du bloc-palier unitaire (7) permet un déplacement relatif des deux axes (19) et (20).The worm (15) is carried by two lateral bearings (17) which maintain its horizontal axis of rotation (18), fixed parallel to the axis of travel (3) of the wire and behind it. It is noted that on the one hand the upper wheel (13) and the upper bearing (11) are mounted on a common axis (19), on the other hand, the lower wheel (14) and the lower bearing (12) are mounted on a common axis (20) and that the conformation of the unit bearing block (7) allows a relative movement of the two axes (19) and (20).
Ce déplacement relatif est généré par le fait que le bloc palier est déformable grâce à une fente plane horizontale (21 ) débouchant sur l'avant du bloc et limitée vers l'arrière par un trou circulaire (22) débouchant latéralement de part et d'autre du bloc (voir figures 4 et 8). Le bloc-palier se déforme lorsqu'on comprime les galets (9, 10) par un moyen de compression pour créer une flexion-rotation autour de l'axe de rotation de la vis sans fin (18).This relative displacement is generated by the fact that the bearing block is deformable thanks to a horizontal plane slot (21) opening on the front of the block and limited to the rear by a circular hole (22) opening laterally on the side and side. other block (see Figures 4 and 8). The bearing block deforms when compressing the rollers (9, 10) by a compression means to create flexion-rotation about the axis of rotation of the worm (18).
On décrit d'abord le moyen de réalisation de la flexion-rotation.Firstly, the means for producing flexion-rotation is described.
Le trou circulaire (22) est parallèle à l'axe (18) d'un alésage (19) du bloc-palier et dans lequel tourne la vis sans fin (15), et à une distance de celui-ci qui est calculée de manière à prévoir une épaisseur de paroi (23) vers l'avant de l'alésage (19) équivalente à l'épaisseur de paroi (24) vers l'arrière de l'alésage (19).The circular hole (22) is parallel to the axis (18) of a bore (19) of the bearing block and in which the worm (15) rotates, and at a distance therefrom which is calculated from in order to provide a wall thickness (23) towards the front of the bore (19) equivalent to the wall thickness (24) towards the rear of the bore (19).
La cote de cette épaisseur de paroi (23) ou (24) est calculée par le constructeur en fonction du paramètre d'élasticité du matériau dans lequel est réalisé le bloc palier et en fonction du diamètre de l'alésage (19).The dimension of this wall thickness (23) or (24) is calculated by the manufacturer according to the elasticity parameter of the material in which the bearing block is produced and according to the diameter of the bore (19).
A titre d'exemple non limitatif pour un bloc-palier en aluminium et un alésage de diamètre 44 mm ± 0,2 on prévoit une épaisseur (23) ou (24) de 6 mm ± 0,1.By way of non-limiting example for an aluminum bearing block and a bore of diameter 44 mm ± 0.2, a thickness (23) or (24) of 6 mm ± 0.1 is provided.
On décrit à présent un moyen de compression des galets. Un palonnier (25) horizontal prévu sur le dessus du bloc palier est porté par deux barres verticales (26) en acier. Une vis de tension (27) placée entre le palonnier et un épaulement (28) du bloc palier (7) permet de soulever ou descendre le palonnier (25).We now describe a roller compression means. A horizontal bar (25) provided on the top of the bearing block is carried by two vertical bars (26) made of steel. A tensioning screw (27) placed between the spreader and a shoulder (28) of the bearing block (7) can raise or lower the spreader (25).
Les barres (26) conformées en bretelles à leur extrémité haute, font office de ressort et garantissent l'effort exercé par les galets sur le fil (2).The bars (26) shaped straps at their upper end, serve as a spring and ensure the force exerted by the rollers on the wire (2).
Le bloc-palier comporte en outre un moyen d'indexation (29) pour appliquer un effort de serrage prédéterminé. Ce moyen (29) est par exemple une roue crantée bloquée par un pied épaulé (30) monté sur un ressort. En débloquant le pied on peut faire tourner la molette et la bloquer à nouveau dans une autre position prédéterminée.The bearing block further comprises an indexing means (29) for applying a predetermined clamping force. This means (29) is for example a toothed wheel blocked by a stepped foot (30) mounted on a spring. By unlocking the foot it is possible to turn the wheel and lock it again in another predetermined position.
En agissant sur la vis de tension (27) on peut éloigner ou rapprocher le galet supérieur (9) du galet inférieur (10) sans modifier l'engrainement des roues supérieure (13) et inférieure (14) sur la vis d'entraînement (15).By acting on the tensioning screw (27) it is possible to move the upper roller (9) away from or closer to the lower roller (10) without modifying the gearing of the upper (13) and lower (14) wheels on the drive screw ( 15).
L'amplitude de serrage des galets est limitée par construction au minimum nécessaire pour libérer ou serrer le fil dans sa plage de tolérance dimensionnelle.The clamping amplitude of the rollers is limited by construction to the minimum required to release or clamp the wire within its dimensional tolerance range.
Avec les valeurs numériques données ci-dessus à titre d'exemple non limitatif, l'amplitude de serrage est mesurée dans le plan (P) est de 0,25 mm de part et d'autre de l'axe de défilement (3) soit une amplitude totale de l'ordre de 0,5 mm. Par rapport à l'art antérieur, les moyens de déplacement des galets sont supprimés et remplacés par une déformation élastique d'un bloc-palier unique portant les arbres des deux galets, et absorbant le déplacement des galets par déformation élastique dudit bloc-palier. La déformation est calculée pour se traduire par une rotation autour de l'axe de la vis d'entraînement ce qui d'une part ne modifie pas le jeu de denture et donc l'engrainement de la transmission, et d'autre part réduit la chaîne de cote entre les deux arbres puisqu'elle se résume à l'entraxe entre lesdits arbres.With the numerical values given above by way of non-limiting example, the clamping amplitude is measured in the plane (P) is 0.25 mm on either side of the axis of movement (3). a total amplitude of the order of 0.5 mm. Compared to the prior art, the means for moving the rollers are removed and replaced by an elastic deformation of a single bearing block carrying the shafts of the two rollers, and absorbing the displacement of the rollers by elastic deformation of said bearing block. The deformation is calculated to result in a rotation around the axis of the drive screw which on the one hand does not modify the backlash and therefore the gearing of the transmission, and secondly reduces the chain of dimension between the two trees since it comes down to the distance between said trees.
Cette conformation permet d'être le plus compact possible au niveau de l'encombrement des roulements nécessaires au regard des efforts et au niveau de la denture d'engrainement et permet ainsi de réduire au maximum l'inertie de toute la chaîne d'entraînement et donc une augmentation possible de la dynamique.This conformation makes it possible to be as compact as possible in terms of the size of the bearings required with regard to the forces and the level of the gear teeth and thus makes it possible to reduce as much as possible the inertia of the entire drive chain and therefore a possible increase of the dynamics.
Cette configuration compacte permet une réduction du nombre de pièces et une augmentation de la précision de positionnement des galets avec une chaîne de cotes réduite.This compact configuration allows a reduction in the number of parts and an increase in the positioning accuracy of the rollers with a reduced size chain.
Cette configuration est en outre modulaire car elle permet d'accoupler plusieurs blocs-paliers (7) entre eux selon le cahier des charges du travail à effectuer et/ou du fil à façonner. A titre d'exemple non limitatif les figures montrent trois blocs-paliers accouplés entre eux par des moyens d'accouplement classiques pour l'homme du métier pour former un poste d'amenage qui est ensuite fixé sur le bâti de la machine de façonnage. This configuration is also modular because it allows to couple several bearing blocks (7) together according to the specifications of the work to be done and / or the wire to be shaped. By way of nonlimiting example, the figures show three bearing blocks coupled together by conventional coupling means for those skilled in the art to form a feeding station which is then fixed on the frame of the forming machine.

Claims

REVENDICATIONS
1. - Poste d'amenage (1 ) d'un fil (2) dans une machine de façonnage de fil, ledit poste comportant des galets à gorge fonctionnant par paire et tournant en sens inverse l'un de l'autre, le fil étant pincé entre lesdits galets par rapprochement relatif de ceux-ci, caractérisé en ce que les deux galets d'une même paire de galets d'entraînement (9, 10) sont portés à l'avant d'un même bloc-palier (7) unitaire, ledit bloc-palier étant déformable élastiquement pour absorber un déplacement relatif des galets (9, 10).1. - Filling station (1) of a wire (2) in a wire forming machine, said station having grooves run in pairs and rotating in opposite directions from each other, the wire being gripped between said rollers by relative approximation thereof, characterized in that the two rollers of the same pair of drive rollers (9, 10) are carried forward of the same bearing block (7 ) unit, said bearing block being elastically deformable to absorb a relative displacement of the rollers (9, 10).
2.- Poste d'amenage selon la revendication 1 caractérisé en ce que ledit bloc-palier (7) porte également une vis de transmission sans fin (15) sur laquelle s'engrènent un couple de roues de transmission (13, 14) coaxiales avec les galets d'entraînement (9, 10) qu'elles entraînent en rotation.2. A feeding station according to claim 1 characterized in that said bearing block (7) also carries an endless transmission screw (15) on which a pair of coaxial transmission wheels (13, 14) mesh with each other. with the drive rollers (9, 10) which they rotate.
3. - Poste d'amenage selon la revendication 2 caractérisé en ce qu'un bloc-palier (7) se déforme de sorte qu'un déplacement relatif des galets se traduit par une rotation- déformation du bloc-palier autour de l'axe de la vis de transmission (15).3. - Feeding station according to claim 2 characterized in that a bearing block (7) is deformed so that a relative displacement of the rollers results in a rotation- deformation of the bearing block around the axis the transmission screw (15).
4. - Poste d'amenage selon la revendication 4 caractérisé en ce qu'un bloc-palier comporte une fente plane horizontale (21 ) débouchant sur l'avant du bloc et limitée vers l'arrière par un trou circulaire (22) débouchant latéralement de part et d'autre du bloc- palier.4. - Feeding station according to claim 4 characterized in that a bearing block comprises a horizontal flat slot (21) opening on the front of the block and limited rearwardly by a circular hole (22) opening laterally. on both sides of the bearing block.
5. - Poste d'amenage selon l'une des revendication 1 à 4, caractérisé en ce qu'il comporte en outre un moyen de compression des galets.5. - Filling station according to one of claims 1 to 4, characterized in that it further comprises a means of compressing the rollers.
6. - Poste d'amenage selon la revendication 5 caractérisé en ce que le moyen de compression des galets est formé d'un palonnier (25) porté par des barres (26) et manoeuvré par une vis de tension (27).6. - Feeding station according to claim 5 characterized in that the means for compressing the rollers is formed of a spreader (25) carried by bars (26) and operated by a tensioning screw (27).
7. - Poste d'amenage selon l'une des revendications 1 à 6 caractérisé en ce qu'il comporte plusieurs bloc-paliers unitaires accouplés entre eux. 7. - Feeding station according to one of claims 1 to 6 characterized in that it comprises a plurality of unit bearing blocks coupled to each other.
EP09724551A 2008-03-27 2009-03-02 Supply station Active EP2274117B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0851974A FR2929145B1 (en) 2008-03-27 2008-03-27 DOCKING STATION
PCT/FR2009/050337 WO2009118495A1 (en) 2008-03-27 2009-03-02 Supply station

Publications (2)

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EP2274117A1 true EP2274117A1 (en) 2011-01-19
EP2274117B1 EP2274117B1 (en) 2011-09-21

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US (1) US8783084B2 (en)
EP (1) EP2274117B1 (en)
AT (1) ATE525149T1 (en)
BR (1) BRPI0909382B1 (en)
CA (1) CA2719463A1 (en)
FR (1) FR2929145B1 (en)
WO (1) WO2009118495A1 (en)

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Also Published As

Publication number Publication date
ATE525149T1 (en) 2011-10-15
FR2929145B1 (en) 2010-03-12
BRPI0909382B1 (en) 2020-04-22
BRPI0909382A2 (en) 2015-10-06
US8783084B2 (en) 2014-07-22
WO2009118495A1 (en) 2009-10-01
FR2929145A1 (en) 2009-10-02
US20110027057A1 (en) 2011-02-03
CA2719463A1 (en) 2009-10-01
EP2274117B1 (en) 2011-09-21

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