EP0362019A1 - Cutting and punching device for sheet materials - Google Patents

Cutting and punching device for sheet materials Download PDF

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Publication number
EP0362019A1
EP0362019A1 EP89402546A EP89402546A EP0362019A1 EP 0362019 A1 EP0362019 A1 EP 0362019A1 EP 89402546 A EP89402546 A EP 89402546A EP 89402546 A EP89402546 A EP 89402546A EP 0362019 A1 EP0362019 A1 EP 0362019A1
Authority
EP
European Patent Office
Prior art keywords
guide
cutting tool
blade
slide
cutting
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
EP89402546A
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German (de)
French (fr)
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EP0362019B1 (en
Inventor
Jean Etcheparre
Bernard Etcheparre
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.)
Lectra SA
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Lectra Systemes SA
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Publication date
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Application filed by Lectra Systemes SA filed Critical Lectra Systemes SA
Priority to AT89402546T priority Critical patent/ATE88943T1/en
Publication of EP0362019A1 publication Critical patent/EP0362019A1/en
Application granted granted Critical
Publication of EP0362019B1 publication Critical patent/EP0362019B1/en
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D9/00—Cutting apparatus combined with punching or perforating apparatus or with dissimilar cutting apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/3806—Cutting-out; Stamping-out wherein relative movements of tool head and work during cutting have a component tangential to the work surface
    • B26F1/3813—Cutting-out; Stamping-out wherein relative movements of tool head and work during cutting have a component tangential to the work surface wherein the tool head is moved in a plane parallel to the work in a coordinate system fixed with respect to the work
    • B26F1/382—Cutting-out; Stamping-out wherein relative movements of tool head and work during cutting have a component tangential to the work surface wherein the tool head is moved in a plane parallel to the work in a coordinate system fixed with respect to the work wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0524—Plural cutting steps
    • Y10T83/0572—Plural cutting steps effect progressive cut
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/162—With control means responsive to replaceable or selectable information program
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8745—Tool and anvil relatively positionable
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8858—Fluid pressure actuated

Definitions

  • the present invention relates to a cutting and punching device for sheet materials such as fabric, intended to be installed on an automatic cutting machine, controlled by a digital control.
  • This device is generally placed on a mobile assembly composed of a beam moving longitudinally on guide rails and above a cutting table and a carriage moving along the beam thus forming a coordinate system crossed.
  • the invention proposes to solve the technical problem of cutting a sheet or stacking of sheets (only a few sheets) by a vibrating metal blade while seeking at the same time the lowest possible weight, in order to be able to move the tool at very high speeds and accelerations, reduced dimensions, great simplicity in order to have the best possible reliability and the presence of a punch allowing to perforate the material.
  • the choice of a vibrating blade imposes several constraints such as a high vibration frequency which requires moving parts of very low mass, slaving of the rotation of the blade to the tangent of the cut profile, dimensions of the blade very weak and a possibility of raising and lowering of the blade in order to disengage it completely from the cutting plane, more precisely when changing profile to be cut.
  • the sharpening of the vibrating blade must be done automatically.
  • the present invention makes it possible to solve these problems for the first time and in a satisfactory manner with a cutting and punching device for sheet materials intended to be mounted movably on an automatic cutting machine, comprising a cutting tool and a tool.
  • punching characterized in that it comprises means for vibrating the cutting tool, means for vertically moving the cutting tool, means for rotating the cutting tool, means for sharpening the cutting tool, means for vertically moving the punching tool, means for rotating the punching tool and a support base on which all said means which are compactly grouped together are likely to be implemented simultaneously and independently of each other.
  • the cutting tool will preferably be a vertical blade and the punching tool a vertical punch.
  • said means for vibrating the cutting tool comprises a flywheel directly coupled to the shaft of an electric motor fixed inside a movable housing, a crank pin mounted on the external face of said flywheel, free to rotate, the position of which is eccentric relative to the axis of rotation of said flywheel and which has an open slot arranged radially in which a T-shaped tongue of a slide adjusted horizontally slides to slide freely and without turning on a hollow guide whose axis is concurrent with that of the flywheel, said slide coming to engage in the upper part of the blade while leaving free its rotation.
  • said means for vertically moving the cutting tool comprise a pneumatic cylinder, two guide columns held at their upper ends by a connecting piece, a compression spring disposed between the base and the mobile box containing the electric motor.
  • said means for rotating the cutting tool comprise a servomotor connected by a toothed belt transmission and two pulleys to the rotary guide driving said blade in rotation.
  • said means for sharpening the cutting tool comprise: - two abrasive tongues articulated around a common vertical axis fixed on a presser foot and kept apart by a spring so as to tangent the blade without touching it, - Inclined planes formed at the lower outlet of the guide and intended to tighten the tongues in contact with the blade when the latter is placed in the high position.
  • Said means for vertical displacement of the punching tool include: - a pneumatic cylinder fixed to the connecting piece, a guide removably attached to a rotary hub of the base, the lower part of said punching tool sliding through the guide and its upper part being centered in the end of the rod of the jack, - A compression spring arranged between the upper face of the hub and the lower face of the cylinder rod and through which the punch passes.
  • said means for rotating the punching tool comprise a motor, pulleys secured respectively to the hub and to the motor shaft on which a round belt is mounted.
  • Figures 1 to 5 show the different means constituting the device of the invention which are integral with each other via a base (4).
  • the base (4) is fixed on a mobile carriage (2), which moves on a beam (1) by means of rollers (3).
  • the vibration of the vertical blade is achieved by the transformation of a continuous rotational movement into an alternating rectilinear movement. Vibration means are used for this with an eccentric device.
  • flywheels which are directly coupled to the shaft of an electric motor (7).
  • the whole is fixed inside a mobile box (6) which slides vertically along the two guide columns (5).
  • a crankpin 15
  • free to rotate the position of which is eccentric relative to the axis of rotation of the flywheel (14).
  • this eccentricity depends on the amplitude of the vibration of the blade.
  • This crankpin comprises an open slot arranged radially in which a tongue of a slide (16) slides.
  • a hollow guide (19), of square section, is fixed vertically on the upper part of the housing (6). Its axis is concurrent with that of the steering wheel (14). On this guide, there is a slide (16), adjusted so that it can slide freely on the guide (19), without however having the possibility of turning around the latter (due to the square section).
  • the slide (16) is composed of several active parts.
  • the first consists of a vertical sleeve of square section, adjusted on the guide (19).
  • the second consists of a tongue (17) secured to the lower base of the sleeve, the ends of which have different shapes.
  • This tongue (17) has the shape of a T and is arranged in such a way that it can slide in the slot of the crank pin (15).
  • the crank pin (15) When the flywheel (6) is rotated, the crank pin (15), by its eccentric position, drives the tongue (17) and thus the entire slide (16); the tongue (17) being able to slide horizontally freely. This is how the rotational movement is transformed into a vibrational movement.
  • the other end of the tongue (17) in T has a shape such that it can snap into the upper part of the vertical blade (20) to drive the latter in the vibration movement while leaving free its rotation.
  • Figure 11 shows a complete blade, with its particular shape at its point of attachment.
  • the blade (20) is guided vertically by a slide (21), which slide is itself guided vertically in a guide (22), mounted in free rotation on the base (4).
  • the guide section is square.
  • the rotation of the slide (21) relative to the guide (22) is thus impossible: only the vertical translation of one relative to the other is possible.
  • the length of the slide (21) is such that the blade does not bend under the action of the cutting forces.
  • the guide (22) is mounted in the base (4) with a ball bearing.
  • the cylinder (pneumatic cylinder) (8) is held in position on the connecting flange (13) via the plate clamping (10).
  • This clamping plate (10) ( Figure 14) is in fact placed above the cylinder (8), which comprises at its upper end a shoulder, said shoulder being housed in a bore of the flange (13).
  • a conventional O-ring type seal is inserted between (10) and (8) so as to avoid air leaks. Compressed air is admitted through the fitting (11).
  • the clamping plate (10) is fixed by means of two knurled head screws (12) (see Figure 2).
  • the slide (21) also has the function of carrying, in its lower part, a presser foot (29), which foot is necessary for pressing or pressing the material to be cut on its cutting support.
  • This foot must take into account the variable heights of the materials to be cut.
  • the up / down movement of this foot is mechanically linked to that of the housing (6) which avoids the use of a separate actuator.
  • the vertical displacement device of the foot (29) comprises a return rod (18) guided vertically in the bore of the upper guide (19) and a compression spring (32) disposed inside the bore, au- above the return rod (18). This spring therefore pushes the return rod (18) down until it reaches its lower stop constituted by a small shoulder.
  • the lower end of the rod (18) has the shape of a coil which comes to engage on a disc secured to the upper part of the slide (21).
  • This coupling device allows a connection in vertical translation of the rod (18) relative to the slide (21) while leaving the rotation of the slide (21) completely free.
  • the spring (32) pushes the rod (18) downward, which pushes the slide (21) and its foot (29) against the material deposited on the cutting table.
  • the presser foot (29) will adapt to the height of the cut material and will cause a contact pressure depending on the setting of the spring (32).
  • the blade independently of its vibrating movement, can move up and down so that it can disengage or penetrate completely into the material to be cut. In fact, all movements outside the cut are made with the blade in the high position.
  • means are used for vertical displacement of the blade comprising a pneumatic cylinder (8) whose cylinder is fixed to the connecting piece or flange (13) holding the two guide columns (5).
  • the piston meanwhile, is fixed on the vibration housing (6). Compressed air is only sent into the cylinder through its upper end through the fitting (11). It is a single acting cylinder.
  • the return movement to the high position is provided by a compression spring (31), which is arranged between the base (4) and the lower part of the housing (6) and between the columns (5).
  • the vertical guidance of the housing (6) is ensured precisely by the two guide columns (5).
  • rotation means comprising a servo-motor (26) controlled in position and speed, a first pulley (25) mounted on the shaft of said motor (26), a second pulley (23) mounted on the lower part of the guide (22) and a toothed belt transmission (24) connecting the two pulleys (23,25) and thus driving the blade (20) in rotation.
  • the servo motor (26) is mounted vertically on a support (27) articulated relative to the base (4). This allows tighten the belt (24) between the two pulleys (23,25) using for example a screw (28), said screw screwing into the base (4) and whose head comes to bear on the articulated support (27) located just opposite. By unscrewing the screw (28), the articulated support (27) is pushed back.
  • a punching tool is used for this, coupled to the cutting tool and which is also managed by digital control.
  • the principle is based on the use of a vertical punch (35) which is raised or lowered by a pneumatic cylinder (30) and whose rotation is ensured by the motor (26).
  • this motor is the same as that which ensures the blade rotation. This avoids the use of an additional motor and contributes to the compactness of the assembly.
  • the punch (35) is slidably mounted in a guide (41), which guide is mounted in a hub (37).
  • This hub (37) is guided in rotation in the base (4) by a ball bearing.
  • a hooking means (not shown), in the form of a clip for example, secures the guide (41) with the hub (37) so that it is rotated but that it can also be disassembled easily. This is necessary for the punch change in which case the guide (41) must be removed.
  • a pulley (38) is integral with the hub (37).
  • Another identical pulley (40) is integral with the motor shaft (26). It is fixed on the same hub as the pulley (25), but above the latter.
  • the two pulleys (38) and (40) are connected by a round belt (39) under tension which thus transmits the rotation of the motor (26) to the hub (37) and therefore to the punch (35).
  • a single-acting cylinder (30), with compressed air, is hooked, by its upper end, to the flange (13).
  • the end (33) of the cylinder rod receives a small ball bearing so that its central part (34) can rotate freely.
  • the end of the punch (35) is such that it is centered in this central part (34).
  • a shoulder, located on the punch (35), of diameter much larger than that of the punch, serves as a vertical stop.
  • a compression spring (36) is placed between on the one hand the upper face of the hub (37) and on the other hand the lower face of the rod of the jack or of the shoulder situated at the end of the punch (35) . This spring exerts a force which keeps the punch (35) pressed against the end (34) of the jack rod.
  • the punch (35) is guided in rotation only by the spring (36), which rests on the hub (37). It is therefore a friction guide.
  • the drive torque is all the greater when the spring is compressed, which goes in the right direction, since the torque must be maximum when the punch is in the low position, that is to say in the matter.
  • the numerical control program establishes the following actions: - movement of the device above the chosen point, blade in high position, - high speed rotation of the motor (26) - lowering of the punch (35) - rise of the punch - engine stop (26).
  • This punching device has the following advantages: - use of a single motor for two completely different functions - maximum compactness - ultra-simplified punch, requiring no special rotational drive means (drive by friction) - very simple assembly and disassembly requiring no tools - very good reliability.
  • the invention therefore also provides means for ensuring this sharpening automatically.
  • the sharpening means must be as small as possible. As shown in Figures 12, 12a and 13, these means are fixed to the presser foot (29).
  • the principle adopted is as follows two small tongues (42) and (43), on which abrasive pads are fixed (covered with diamond powder for example), are articulated around a common axis (48), which is fixed vertically on the presser foot (29).
  • the tongues (42) and (43) are held in position apart by a small spring (45), the details of which are given in FIG. 12. They are positioned so as to tangent the cutting blade (20), without touching it.
  • the tongues (42) and (43) include an extension (43 ′) having the shape of a vertical tongue.
  • the lower opening of the guide (22) is machined in a flared shape so as to present above each tongue (42) and (43) an inclined plane (46), close to the vertical.
  • sharpening means in addition to their extreme compactness, have the advantage of automatically compensating for the wear of the blade. In addition, there is no need for any specific additional command since sharpening occurs systematically at each blade lift.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Control Of Cutting Processes (AREA)
  • Machines For Laying And Maintaining Railways (AREA)

Abstract

Cutting and punching device for sheet materials, intended to be installed on an automatic cutting machine. The cutting tool is a vertical blade (20) and the punching tool is a vertical punch (35), which tools are integrally connected to each other by means of a base plate (4). <IMAGE>

Description

La présente invention concerne un dispositif de coupe et de poinçonnage pour matières en feuilles telles que du tissu, destiné à être installé sur une machine de coupe automatique, pilotée par une commande numérique. Ce dispositif est généralement disposé sur un équipage mobile composé d'une poutre se déplaçant longitudinalement sur des rails de guidage et au-dessus d'une table de coupe et d'un chariot se déplaçant le long de la poutre formant ainsi un système de coordonnées croisées.The present invention relates to a cutting and punching device for sheet materials such as fabric, intended to be installed on an automatic cutting machine, controlled by a digital control. This device is generally placed on a mobile assembly composed of a beam moving longitudinally on guide rails and above a cutting table and a carriage moving along the beam thus forming a coordinate system crossed.

L'invention se propose de résoudre le problème technique de la découpe d'une feuille ou d'un empilage de feuilles (quelques feuilles seulement) par une lame métallique vibrante tout en recherchant à la fois un poids le plus faible possible, afin de pouvoir déplacer l'outil à des vitesses et accélérations très élevées, un encombrement réduit, une grande simplicité afin d'avoir la meilleur fiabilité possible et la présence d'un poinçon permettant de perforer la matière.The invention proposes to solve the technical problem of cutting a sheet or stacking of sheets (only a few sheets) by a vibrating metal blade while seeking at the same time the lowest possible weight, in order to be able to move the tool at very high speeds and accelerations, reduced dimensions, great simplicity in order to have the best possible reliability and the presence of a punch allowing to perforate the material.

De plus, le choix d'une lame vibrante impose plusieurs contraintes telles qu'une fréquence de vibration élevée qui exige des pièces en mouvement de masse très faible, un asservissement de la rotation de la lame à la tangente du profil découpé, des dimensions de la lame très faibles et une possibilité de montée et de descente de la lame afin de la dégager complètement du plan de coupe, plus précisément lorsqu'on change de profil à découper. Par ailleurs, l'affûtage de la lame vibrante doit se faire de façon automatique.In addition, the choice of a vibrating blade imposes several constraints such as a high vibration frequency which requires moving parts of very low mass, slaving of the rotation of the blade to the tangent of the cut profile, dimensions of the blade very weak and a possibility of raising and lowering of the blade in order to disengage it completely from the cutting plane, more precisely when changing profile to be cut. In addition, the sharpening of the vibrating blade must be done automatically.

La présente invention permet de résoudre ces problèmes pour la première fois et de manière satisfaisante avec un dispositif de coupe et de poinçonnage pour matières en feuilles destiné à être monté de façon mobile sur une machine de coupe automatique, comportant un outil de coupe et un outil de poinçonnage, caractérisé en ce qu'il comprend des moyens de vibration de l'outil de coupe, des moyens de déplacement vertical de l'outil de coupe, des moyens de rotation de l'outil de coupe, des moyens d'affûtage de l'outil de coupe, des moyens de déplacement vertical de l'outil de poinçonnage, des moyens de rotation de l'outil de poinçonnage et une embase de support sur laquelle sont regroupés de façon compacte tous lesdits moyens qui sont susceptibles d'être mis en oeuvre simultanément et indépendamment les uns des autres.The present invention makes it possible to solve these problems for the first time and in a satisfactory manner with a cutting and punching device for sheet materials intended to be mounted movably on an automatic cutting machine, comprising a cutting tool and a tool. punching, characterized in that it comprises means for vibrating the cutting tool, means for vertically moving the cutting tool, means for rotating the cutting tool, means for sharpening the cutting tool, means for vertically moving the punching tool, means for rotating the punching tool and a support base on which all said means which are compactly grouped together are likely to be implemented simultaneously and independently of each other.

Selon l'invention, l'outil de coupe sera de préférence une lame verticale et l'outil de poinçonnage un poinçon vertical.According to the invention, the cutting tool will preferably be a vertical blade and the punching tool a vertical punch.

Selon une caractéristique de l'invention, lesdits moyens de vibration de l'outil de coupe comprennent un volant accouplé directement sur l'arbre d'un moteur électrique fixé à l'intérieur d'un boîtier mobile, un maneton monté sur la face extérieure dudit volant, libre en rotation dont la position est excentrée par rapport à l'axe de rotation dudit volant et qui possède une fente ouverte disposée radialement dans laquelle vient coulisser horizontalement une languette en T d'un coulisseau ajusté pour coulisser librement et sans tourner sur un guide creux dont l'axe est concourant avec celui du volant, ledit coulisseau venant s'enclencher dans la partie supérieure de la lame tout en laissant libre sa rotation.According to a characteristic of the invention, said means for vibrating the cutting tool comprises a flywheel directly coupled to the shaft of an electric motor fixed inside a movable housing, a crank pin mounted on the external face of said flywheel, free to rotate, the position of which is eccentric relative to the axis of rotation of said flywheel and which has an open slot arranged radially in which a T-shaped tongue of a slide adjusted horizontally slides to slide freely and without turning on a hollow guide whose axis is concurrent with that of the flywheel, said slide coming to engage in the upper part of the blade while leaving free its rotation.

Selon une autre caractéristique de l'invention, lesdits moyens de déplacement vertical de l'outil de coupe comprennent un vérin pneumatique, deux colonnes de guidage maintenues à leurs extrémités supérieures par une pièce de liaison, un ressort de compression disposé entre l'embase et le boîtier mobile renfermant le moteur électrique.According to another characteristic of the invention, said means for vertically moving the cutting tool comprise a pneumatic cylinder, two guide columns held at their upper ends by a connecting piece, a compression spring disposed between the base and the mobile box containing the electric motor.

Toujours selon une autre caractéristique de l'invention, lesdits moyens de rotation de l'outil de coupe comprennent un servo-moteur relié par une transmission à courroie crantée et deux poulies au guide rotatif entraînant en rotation ladite lame.Still according to another characteristic of the invention, said means for rotating the cutting tool comprise a servomotor connected by a toothed belt transmission and two pulleys to the rotary guide driving said blade in rotation.

Selon l'invention, lesdits moyens d'affûtage de l'outil de coupe comprennent :
- deux languettes abrasives articulées autour d'un axe vertical commun fixé sur un pied presseur et maintenues écartées par un ressort de façon à tangenter la lame sans la toucher,
- des plans inclinés ménagés au débouché inférieur du guide et destinés à resserrer les languettes au contact de la lame lorsque celle-ci est mise en position haute.According to the invention, said means for sharpening the cutting tool comprise:
- two abrasive tongues articulated around a common vertical axis fixed on a presser foot and kept apart by a spring so as to tangent the blade without touching it,
- Inclined planes formed at the lower outlet of the guide and intended to tighten the tongues in contact with the blade when the latter is placed in the high position.

Lesdits moyens de déplacement vertical de l'outil de poinçonnage comprennent :
- un vérin pneumatique fixé à la pièce de liaison,
- un guide accroché de façon amovible dans un moyeu rotatif de l'embase, la partie inférieure dudit outil de poinçonnage coulissant au travers du guide et sa partie supérieure étant centrée dans l'extrémité de la tige du vérin,
- un ressort de compression disposé entre la face supérieure du moyeu et la face inférieure de la tige du vérin et au travers duquel passe le poinçon.Said means for vertical displacement of the punching tool include:
- a pneumatic cylinder fixed to the connecting piece,
a guide removably attached to a rotary hub of the base, the lower part of said punching tool sliding through the guide and its upper part being centered in the end of the rod of the jack,
- A compression spring arranged between the upper face of the hub and the lower face of the cylinder rod and through which the punch passes.

Selon l'invention également, lesdits moyens de rotation de l'outil de poinçonnage comprennent un moteur, des poulies solidaires respectivement du moyeu et de l'arbre du moteur sur lesquelles est montée une courroie ronde.According to the invention also, said means for rotating the punching tool comprise a motor, pulleys secured respectively to the hub and to the motor shaft on which a round belt is mounted.

L'invention sera mieux comprise à la lecture de la description qui va suivre accompagnée des dessins annexés sur lesquels :

  • Les figures 1, 2, 3 et 4 sont respectivement des vues latérale, de face, de dessus et de derrière du dispositif de l'invention.
  • La figure 5 est une vue en coupe partielle des moyens de vibration de l'outil de coupe.
  • La figure 6 est une vue en coupe partielle des moyens de déplacement vertical et des moyens de rotation de l'outil de poinçonnage.
  • Les figures 7, 8, 9 et 10 sont des vues de détail en coupe partielle des moyens de vibration de l'outil de coupe.
  • La figure 11 représente l'outil de coupe.
  • Les figures 12 et 12a représentent une vue latérale et en coupe suivant FF des moyens d'affûtage.
  • La figure 13 est une vue de détail des moyens d'affûtage.
  • La figure 14 est une vue de dessus de la plaque de bridage qui permet un changement rapide de la lame.
The invention will be better understood on reading the description which follows, accompanied by the appended drawings in which:
  • Figures 1, 2, 3 and 4 are respectively side, front, top and back views of the device of the invention.
  • Figure 5 is a partial sectional view of the vibration means of the cutting tool.
  • Figure 6 is a partial sectional view of the vertical displacement means and the rotation means of the punching tool.
  • Figures 7, 8, 9 and 10 are detail views in partial section of the vibration means of the cutting tool.
  • Figure 11 shows the cutting tool.
  • Figures 12 and 12a show a side view in section along FF of the sharpening means.
  • Figure 13 is a detail view of the sharpening means.
  • Figure 14 is a top view of the plate clamping which allows a quick change of the blade.

Les figures 1 à 5 représentent les différents moyens constituant le dispositif de l'invention qui sont solidaires les uns des autres par l'intermédiaire d'une embase (4).Figures 1 to 5 show the different means constituting the device of the invention which are integral with each other via a base (4).

Ces figures représentent également deux colonnes de guidage (5) permettant le mouvement vertical de montée et de descente de l'outil de coupe. Ces deux colonnes sont maintenues à leurs extrémités supérieures par une pièce de liaison ou bride (13) et un support articulé (27) sur lequel est fixé un moteur destiné à animer à la fois les moyens de rotation de l'outil de coupe et ceux de l'outil de poinçonnage.These figures also represent two guide columns (5) allowing the vertical movement of raising and lowering of the cutting tool. These two columns are held at their upper ends by a connecting piece or flange (13) and an articulated support (27) on which is fixed a motor intended to drive both the means of rotation of the cutting tool and those of the punching tool.

L'embase (4) est fixée sur un chariot mobile (2), lequel se déplace sur une poutre (1) par l'intermédiaire de galets (3).The base (4) is fixed on a mobile carriage (2), which moves on a beam (1) by means of rollers (3).

La vibration de la lame verticale est réalisée par la transformation d'un mouvement de rotation continu en mouvement rectiligne alternatif. On utilise pour cela des moyens de vibration avec un dispositif à excentrique.The vibration of the vertical blade is achieved by the transformation of a continuous rotational movement into an alternating rectilinear movement. Vibration means are used for this with an eccentric device.

Ces moyens comprennent un volant (14) qui est accouplé directement sur l'arbre d'un moteur électrique (7). Le tout est fixé à l'intérieur d'un boîtier mobile (6) lequel coulisse verticalement le long des deux colonnes de guidage (5). Sur la face extérieure de ce volant est monté un maneton (15), libre en rotation, dont la position est excentrée par rapport à l'axe de rotation du volant (14).These means include a flywheel (14) which is directly coupled to the shaft of an electric motor (7). The whole is fixed inside a mobile box (6) which slides vertically along the two guide columns (5). On the outer face of this flywheel is mounted a crankpin (15), free to rotate, the position of which is eccentric relative to the axis of rotation of the flywheel (14).

Comme on peut le voir sur les figures 7 à 10, de cette excentration dépend l'amplitude de la vibration de la lame. Ce maneton comprend une fente ouverte disposée radialement dans laquelle vient coulisser une languette d'un coulisseau (16).As can be seen in Figures 7 to 10, this eccentricity depends on the amplitude of the vibration of the blade. This crankpin comprises an open slot arranged radially in which a tongue of a slide (16) slides.

Un guide creux (19), de section carrée, est fixé verticalement sur la partie supérieure du boîtier (6). Son axe est concourant avec celui du volant (14). Sur ce guide, on trouve un coulisseau (16), ajusté de telle façon qu'il puisse coulisser librement sur le guide (19), sans toutefois avoir la possibilité de tourner autour de ce dernier (du fait de la section carrée).A hollow guide (19), of square section, is fixed vertically on the upper part of the housing (6). Its axis is concurrent with that of the steering wheel (14). On this guide, there is a slide (16), adjusted so that it can slide freely on the guide (19), without however having the possibility of turning around the latter (due to the square section).

Le coulisseau (16) est composé de plusieurs parties actives. La première est constituée par un manchon vertical de section carrée, ajusté sur le guide (19). La seconde est constituée par une languette (17) solidaire de la base inférieure du manchon dont les extrémités ont des formes différentes. Cette languette (17) a la forme d'un T et est disposée de telle manière qu'elle puisse coulisser dans la fente du maneton (15). Lorsqu'on fait tourner le volant (6), le maneton (15), de par sa position excentrée, entraîne la languette (17) et ainsi le coulisseau entier (16); la languette (17) pouvant coulisser horizontalement librement. C'est ainsi que le mouvement de rotation est transformé en mouvement de vibration.The slide (16) is composed of several active parts. The first consists of a vertical sleeve of square section, adjusted on the guide (19). The second consists of a tongue (17) secured to the lower base of the sleeve, the ends of which have different shapes. This tongue (17) has the shape of a T and is arranged in such a way that it can slide in the slot of the crank pin (15). When the flywheel (6) is rotated, the crank pin (15), by its eccentric position, drives the tongue (17) and thus the entire slide (16); the tongue (17) being able to slide horizontally freely. This is how the rotational movement is transformed into a vibrational movement.

L'autre extrémité de la languette (17) en T a une forme telle qu'il peut s'enclencher dans la partie supérieure de la lame verticale (20) pour entraîner cette dernière dans le mouvement de vibration tout en laissant libre sa rotation.The other end of the tongue (17) in T has a shape such that it can snap into the upper part of the vertical blade (20) to drive the latter in the vibration movement while leaving free its rotation.

La figure 11 montre une lame complète, avec sa forme particulière en son point d'accrochage.Figure 11 shows a complete blade, with its particular shape at its point of attachment.

En référence à la figure 5, la lame (20) est guidée verticalement par un coulisseau (21), lequel coulisseau est lui-même guidé verticalement dans un guide (22), monté en rotation libre sur l'embase (4). La section du guidage est carrée. La rotation du coulisseau (21) par rapport au guide (22) est ainsi impossible : seule la translation verticale de l'un par rapport à l'autre est possible. Par ce dispositif, on est ainsi capable de transmettre une rotation du guide (22) à la lame (20) sans gêner le mouvement de vibration de cette dernière. La longueur du coulisseau (21) est telle que la lame ne fléchit pas sous l'action des efforts de coupe. Le guide (22) est monté dans l'embase (4) avec un roulement à billes.Referring to Figure 5, the blade (20) is guided vertically by a slide (21), which slide is itself guided vertically in a guide (22), mounted in free rotation on the base (4). The guide section is square. The rotation of the slide (21) relative to the guide (22) is thus impossible: only the vertical translation of one relative to the other is possible. By this device, one is thus able to transmit a rotation of the guide (22) to the blade (20) without interfering with the vibration movement of the latter. The length of the slide (21) is such that the blade does not bend under the action of the cutting forces. The guide (22) is mounted in the base (4) with a ball bearing.

Afin d'assurer le changement rapide de la lame (20), il a été prévu un arrangement particulier de certaines pièces de façon à ce que le démontage soit aisé. En référence à la figure 5, le cylindre (de vérin pneumatique) (8) est maintenu en position sur la bride de liaison (13) par l'intermédiaire de la plaque de bridage (10). Cette plaque de bridage (10) (figure 14) est en effet placée au dessus du cylindre (8), lequel comporte en son extrémité supérieure un épaulement, ledit épaulement se logeant dans un alésage de la bride (13). Un joint d'étanchéité classique, de type torique est intercalé entre (10) et (8) de façon à éviter les fuites d'air. L'air comprimé est admis par le raccord (11). La plaque de bridage (10) est fixée par l'intermédiaire de deux vis à têtes moletées (12) (voir figure 2). Sur la plaque de bridage (10), on trouve d'un côté un trou lisse (45) et de l'autre un trou ouvert latéralement (46) au travers desquels passent les vis (12). Ainsi, si l'on desserre les vis (12), sans les enlever, la plaque (10) peut pivoter autour de l'axe du trou (45). On libère alors le cylindre (8), lequel peut être dégagé par le dessus. En conséquence, on peut relever le boîtier (6) et dégager complètement la lame (20) du coulisseau (21).In order to ensure rapid change of the blade (20), special arrangements have been made for certain parts so that disassembly is easy. Referring to Figure 5, the cylinder (pneumatic cylinder) (8) is held in position on the connecting flange (13) via the plate clamping (10). This clamping plate (10) (Figure 14) is in fact placed above the cylinder (8), which comprises at its upper end a shoulder, said shoulder being housed in a bore of the flange (13). A conventional O-ring type seal is inserted between (10) and (8) so as to avoid air leaks. Compressed air is admitted through the fitting (11). The clamping plate (10) is fixed by means of two knurled head screws (12) (see Figure 2). On the clamping plate (10), there is on one side a smooth hole (45) and on the other a laterally open hole (46) through which the screws (12) pass. Thus, if the screws (12) are loosened, without removing them, the plate (10) can pivot around the axis of the hole (45). The cylinder (8) is then released, which can be released from above. Consequently, the housing (6) can be raised and the blade (20) completely released from the slide (21).

Le coulisseau (21) a aussi pour fonction de porter, en sa partie inférieure, un pied presseur (29), lequel pied est nécessaire pour plaquer ou presser la matière à découper sur son support de coupe. Ce pied doit tenir compte des hauteurs variables des matières à découper. Le mouvement de montée/descente de ce pied est lié mécaniquement à celui du boîtier (6) ce qui évite l'utilisation d'un actionneur séparé. Le dispositif de déplacement vertical du pied (29) comprend une tige de rappel (18) guidée verticalement dans l'alésage du guide supérieur (19) et un ressort de compression (32) disposé à l'intérieur de l'alésage, au-dessus de la tige de rappel (18). Ce ressort repousse donc la tige de rappel (18) vers le bas jusqu'à atteindre sa butée inférieure constituée par un petit épaulement. L'extrémité inférieure de la tige (18) a la forme d'une bobine qui vient s'enclencher sur un disque solidaire de la partie supérieure du coulisseau (21). Ce dispositif d'accouplement permet une liaison en translation verticale de la tige (18) par rapport au coulisseau (21) tout en laissant la rotation du coulisseau (21) totalement libre. Lorsque le boîtier (6) est mis en position basse, le ressort (32) pousse la tige (18) vers le bas, laquelle pousse le coulisseau (21) et son pied (29) contre le matériau déposé sur la table de coupe. Ainsi, quelle que soit l'amplitude du mouvement ou la position du boîtier (6), le pied presseur (29) s'adaptera à la hauteur du matériau découpé et provoquera une pression de contact dépendant du tarage du ressort (32).The slide (21) also has the function of carrying, in its lower part, a presser foot (29), which foot is necessary for pressing or pressing the material to be cut on its cutting support. This foot must take into account the variable heights of the materials to be cut. The up / down movement of this foot is mechanically linked to that of the housing (6) which avoids the use of a separate actuator. The vertical displacement device of the foot (29) comprises a return rod (18) guided vertically in the bore of the upper guide (19) and a compression spring (32) disposed inside the bore, au- above the return rod (18). This spring therefore pushes the return rod (18) down until it reaches its lower stop constituted by a small shoulder. The lower end of the rod (18) has the shape of a coil which comes to engage on a disc secured to the upper part of the slide (21). This coupling device allows a connection in vertical translation of the rod (18) relative to the slide (21) while leaving the rotation of the slide (21) completely free. When the housing (6) is placed in the low position, the spring (32) pushes the rod (18) downward, which pushes the slide (21) and its foot (29) against the material deposited on the cutting table. Thus, whatever the amplitude of the movement or the position of the housing (6), the presser foot (29) will adapt to the height of the cut material and will cause a contact pressure depending on the setting of the spring (32).

Il est nécessaire que la lame, indépendamment de son mouvement de vibration, puisse monter et descendre de façon à pouvoir se dégager ou pénétrer complètement dans la matière à découper. En effet, tous les déplacements hors coupe sont faits avec la lame en position haute.It is necessary that the blade, independently of its vibrating movement, can move up and down so that it can disengage or penetrate completely into the material to be cut. In fact, all movements outside the cut are made with the blade in the high position.

Pour obtenir ce résultat, on utilise des moyens de déplacement vertical de la lame comprenant un vérin pneumatique (8) dont le cylindre est fixé sur la pièce de liaison ou bride (13) maintenant les deux colonnes de guidage (5). Le piston, quant à lui, est fixé sur le boîtier de vibration (6). L'air comprimé n'est envoyé dans le cylindre que par son extrémité supérieure grâce au raccord (11). Il s'agit d'un vérin simple effet. Le mouvement de retour vers la position haute est assuré par un ressort de compression (31), lequel est disposé entre l'embase (4) et la partie inférieure du boîtier (6) et entre les colonnes (5).To obtain this result, means are used for vertical displacement of the blade comprising a pneumatic cylinder (8) whose cylinder is fixed to the connecting piece or flange (13) holding the two guide columns (5). The piston, meanwhile, is fixed on the vibration housing (6). Compressed air is only sent into the cylinder through its upper end through the fitting (11). It is a single acting cylinder. The return movement to the high position is provided by a compression spring (31), which is arranged between the base (4) and the lower part of the housing (6) and between the columns (5).

Le guidage vertical du boîtier (6) est assuré précisément par les deux colonnes de guidage (5).The vertical guidance of the housing (6) is ensured precisely by the two guide columns (5).

Etant donné la largeur non négligeable de la lame, bien qu'elle soit faible dans cette application particulière, il est indispensable que son fil tranchant soit toujours orienté dans l'axe du déplacement. Cela revient à dire qu'elle doit rester en permanence tangente au profil découpé.Given the significant width of the blade, although it is small in this particular application, it is essential that its cutting edge is always oriented in the axis of movement. This amounts to saying that it must remain permanently tangent to the cut profile.

Pour cela, on utilise des moyens de rotation comprenant un servo-moteur (26) asservi en position et en vitesse,une première poulie (25) montée sur l'arbre dudit moteur (26), une seconde poulie (23) montée à la partie inférieure du guide (22) et une transmission à courroie crantée (24) reliant les deux poulies (23,25) et entraînant ainsi la lame (20) en rotation.For this, use is made of rotation means comprising a servo-motor (26) controlled in position and speed, a first pulley (25) mounted on the shaft of said motor (26), a second pulley (23) mounted on the lower part of the guide (22) and a toothed belt transmission (24) connecting the two pulleys (23,25) and thus driving the blade (20) in rotation.

Le servo-moteur (26) est monté verticalement sur un support (27) articulé par rapport à l'embase (4). Ceci permet de tendre la courroie (24) entre les deux poulies (23,25) en utilisant par exemple une vis (28), ladite vis se vissant dans l'embase (4) et dont la tête vient en appui sur le support articulé (27) situé juste en face. En dévissant la vis (28), on repousse le support articulé (27).The servo motor (26) is mounted vertically on a support (27) articulated relative to the base (4). This allows tighten the belt (24) between the two pulleys (23,25) using for example a screw (28), said screw screwing into the base (4) and whose head comes to bear on the articulated support (27) located just opposite. By unscrewing the screw (28), the articulated support (27) is pushed back.

Dans certaines applications, il peut être nécessaire de perforer la matière à découper en des endroits particuliers, ces perforations servant alors de repères au moment de l'assemblage des pièces entre elles. On utilise pour cela un outil de poinçonnage couplé à l'outil de coupe et qui est lui aussi géré par la commande numérique.In certain applications, it may be necessary to perforate the material to be cut in particular places, these perforations then serving as markers when the parts are assembled together. A punching tool is used for this, coupled to the cutting tool and which is also managed by digital control.

Afin que la marque soit la plus nette possible, il est nécessaire de faire tourner l'outil de poinçonnage constitué d'un poinçon vertical autour de son axe au moment où il pénètre dans la matière.In order for the mark to be as clear as possible, it is necessary to rotate the punching tool consisting of a vertical punch around its axis when it enters the material.

Dans ce but, on utilise des moyens de rotation et de déplacement vertical du poinçon qui sont illustrés par la figure 6.For this purpose, means of rotation and vertical displacement of the punch are used which are illustrated in FIG. 6.

Le principe est fondé sur l'utilisation d'un poinçon vertical (35) que l'on fait monter ou descendre grâce à un vérin pneumatique (30) et dont la rotation est assurée par le moteur (26). De préférence ce moteur est le même que celui qui assure la rotation de lame. Ceci évite l'emploi d'un moteur supplémentaire et concourt à la compacité de l'ensemble.The principle is based on the use of a vertical punch (35) which is raised or lowered by a pneumatic cylinder (30) and whose rotation is ensured by the motor (26). Preferably this motor is the same as that which ensures the blade rotation. This avoids the use of an additional motor and contributes to the compactness of the assembly.

Le poinçon (35) est monté coulissant dans un guide (41), lequel guide est monté dans un moyeu (37). Ce moyeu (37) est guidé en rotation dans l'embase (4) par un roulement à billes. Un moyen d'accrochage (non représenté), sous forme de clip par exemple, solidarise le guide (41) avec le moyeu (37) de façon à ce qu'il soit entraîné en rotation mais qu' il puisse aussi être démonté facilement. Ceci est necessaire pour le changement de poinçon auquel cas on doit enlever le guide (41). Une poulie (38) est solidaire du moyeu (37). Une autre poulie (40), identique, est solidaire de l'arbre du moteur (26). Elle est fixée sur le même moyeu que la poulie (25), mais au-dessus de cette dernière. Les deux poulies (38) et (40) sont reliées par une courroie ronde (39) sous tension qui transmet ainsi la rotation du moteur (26) au moyeu (37) et donc au poinçon (35).The punch (35) is slidably mounted in a guide (41), which guide is mounted in a hub (37). This hub (37) is guided in rotation in the base (4) by a ball bearing. A hooking means (not shown), in the form of a clip for example, secures the guide (41) with the hub (37) so that it is rotated but that it can also be disassembled easily. This is necessary for the punch change in which case the guide (41) must be removed. A pulley (38) is integral with the hub (37). Another identical pulley (40) is integral with the motor shaft (26). It is fixed on the same hub as the pulley (25), but above the latter. The two pulleys (38) and (40) are connected by a round belt (39) under tension which thus transmits the rotation of the motor (26) to the hub (37) and therefore to the punch (35).

Un vérin simple effet (30), à air comprimé, est accroché, par son extrémité supérieure, à la bride (13). L'extrémité (33) de tige de vérin reçoit un petit roulement à billes de façon que sa partie centrale (34) puisse tourner librement. L'extrémité du poinçon (35) est telle qu'elle vient se centrer dans cette partie centrale (34). Un épaulement, situé sur le poinçon (35), de diamètre nettement supérieure à celui du poinçon, sert de butée verticale. Un ressort de compression (36) est mis en place entre d'une part la face supérieure du moyeu (37) et d'autre part la face inférieure de la tige du vérin ou de l'épaulement situé en extrémité du poinçon (35). Ce ressort exerce un effort qui maintient le poinçon (35) plaqué contre l'extrémité (34) de la tige de vérin. En conséquence, le poinçon (35) est guidé en rotation uniquement par le ressort (36), lequel s'appuie sur le moyeu (37). Il s'agit donc d'un guidage par friction. Le couple d'entraînement est d'autant plus grand que le ressort est comprimé, ce qui va dans le bon sens, puisque le couple de rotation doit être maximum quand le poinçon est en position basse, c'est-à-dire dans la matière.A single-acting cylinder (30), with compressed air, is hooked, by its upper end, to the flange (13). The end (33) of the cylinder rod receives a small ball bearing so that its central part (34) can rotate freely. The end of the punch (35) is such that it is centered in this central part (34). A shoulder, located on the punch (35), of diameter much larger than that of the punch, serves as a vertical stop. A compression spring (36) is placed between on the one hand the upper face of the hub (37) and on the other hand the lower face of the rod of the jack or of the shoulder situated at the end of the punch (35) . This spring exerts a force which keeps the punch (35) pressed against the end (34) of the jack rod. Consequently, the punch (35) is guided in rotation only by the spring (36), which rests on the hub (37). It is therefore a friction guide. The drive torque is all the greater when the spring is compressed, which goes in the right direction, since the torque must be maximum when the punch is in the low position, that is to say in the matter.

Lorsque l'on veut faire un poinçonnage, le programme de la commande numérique établit les actions suivantes :
- déplacement du dispositif au-dessus du point choisi, lame en position haute,
- rotation à grande vitesse du moteur (26)
- descente du poinçon (35)
- montée du poinçon
- arrêt du moteur (26).When you want to punch, the numerical control program establishes the following actions:
- movement of the device above the chosen point, blade in high position,
- high speed rotation of the motor (26)
- lowering of the punch (35)
- rise of the punch
- engine stop (26).

Ce dispositif de poinçonnage a les avantages suivants :
- utilisation d'un seul moteur pour deux fonctions totalement différentes
- compacité maximale
- poinçon ultra simplifié, ne nécessitant pas de moyen d'entraînement en rotation particulier (entraînement par friction)
- montage et démontage très simples ne nécessitant aucun outillage
- très bonne fiabilité.This punching device has the following advantages:
- use of a single motor for two completely different functions
- maximum compactness
- ultra-simplified punch, requiring no special rotational drive means (drive by friction)
- very simple assembly and disassembly requiring no tools
- very good reliability.

Afin de conserver une lame parfaitement aiguisée et tranchante tout au long de la coupe, il est nécessaire de l'affûter de temps en temps.In order to keep a perfectly sharp and sharp blade throughout the cut, it is necessary to sharpen it from time to time.

L'invention propose donc également des moyens permettant d'assurer cet affûtage de façon automatique.The invention therefore also provides means for ensuring this sharpening automatically.

Etant donné la compacité de l'ensemble, les moyens d'affûtage doivent être les plus petits possible. Comme représentés sur les figures 12, 12a et 13, ces moyens sont fixés sur le pied presseur (29). Le principe retenu est le suivant deux petites languettes (42) et (43), sur lesquelles sont fixées des plaquettes abrasives (recouvertes de poudre de diamant par exemple), sont articulées autour d'un axe commun (48), qui est fixé verticalement sur le pied presseur (29). Les languettes (42) et (43) sont maintenues en position écartées par un petit ressort (45) dont le détail est donné sur la figure 12. Elles sont positionnées de façon à tangenter la lame de coupe (20), sans la toucher. Les languettes (42) et (43) comprennent un prolongement (43′) ayant la forme d'une languette verticale. Le débouché inférieur du guide (22) est usiné en forme évasée de façon à présenter au-dessus de chaque languette (42) et (43) un plan incliné (46), proche de la verticale.Given the compactness of the assembly, the sharpening means must be as small as possible. As shown in Figures 12, 12a and 13, these means are fixed to the presser foot (29). The principle adopted is as follows two small tongues (42) and (43), on which abrasive pads are fixed (covered with diamond powder for example), are articulated around a common axis (48), which is fixed vertically on the presser foot (29). The tongues (42) and (43) are held in position apart by a small spring (45), the details of which are given in FIG. 12. They are positioned so as to tangent the cutting blade (20), without touching it. The tongues (42) and (43) include an extension (43 ′) having the shape of a vertical tongue. The lower opening of the guide (22) is machined in a flared shape so as to present above each tongue (42) and (43) an inclined plane (46), close to the vertical.

Lorsqu'on met la lame en position haute, le coulisseau (21) et son pied presseur (29) remontent aussi. Les languettes (43′) viennent alors s'appuyer sur les plans inclinés (46) du guide (22) et ressèrent de ce fait les languettes (42) et (43) de façon à les plaquer contre la lame (20). Si à ce moment la lame est en vibration, elle s'affûte au contact des plaquettes abrasives (44).When the blade is placed in the high position, the slide (21) and its presser foot (29) also go up. The tongues (43 ′) then come to bear on the inclined planes (46) of the guide (22) and thereby tighten the tongues (42) and (43) so as to press them against the blade (20). If at this time the blade is vibrating, it sharpens on contact with the abrasive pads (44).

Dès que la lame est descendue pour entamer une nouvelle coupe, les languettes (43′) se désengagent des plans inclinés (46) et en conséquence écartent les plaquettes abrasives de dessus la lame (grâce à l'action combinée du ressort de rappel(45) : l'affûtage est alors interrompu).As soon as the blade is lowered to start a new cut, the tongues (43 ′) disengage from the inclined planes (46) and consequently spread the abrasive pads from above the blade (thanks to the combined action of the return spring (45 ): sharpening is then interrupted).

Il est à noter que pour pouvoir mettre en oeuvre ces moyens, il est nécessaire de supprimer l'axe d'articulation (47) du pied presseur par rapport au coulisseau (21).It should be noted that in order to be able to use these means, it is necessary to remove the hinge pin (47) of the presser foot relative to the slide (21).

Ces moyens d'affûtage, outre leur extrême compacité, ont l'avantage de compenser automatiquement l'usure de la lame. De plus, il n'y a besoin d'aucune commande spécifique annexe puisque l'affûtage se produit systématiquement à chaque remontée de lame.These sharpening means, in addition to their extreme compactness, have the advantage of automatically compensating for the wear of the blade. In addition, there is no need for any specific additional command since sharpening occurs systematically at each blade lift.

Claims (15)

1. Dispositif de coupe et de poinçonnage pour matières en feuilles destiné à être monté de façon mobile sur une machine de coupe automatique, comportant un outil de coupe et un outil de poinçonnage, caractérisé en ce qu'il comprend des moyens de vibration de l'outil de coupe, des moyens de déplacement vertical de l'outil de coupe, des moyens de rotation de l'outil de coupe, des moyens d'affûtage de l'outil de coupe, des moyens de déplacement vertical de l'outil de poinçonnage, des moyens de rotation de l'outil de poinçonnage et une embase de support sur laquelle sont regroupés de façon compacte tous lesdits moyens qui sont susceptibles d'être mis en oeuvre simultanément et indépendamment les uns des autres.1. Cutting and punching device for sheet materials intended to be mounted movably on an automatic cutting machine, comprising a cutting tool and a punching tool, characterized in that it comprises means for vibrating the cutting tool, means for vertically moving the cutting tool, means for rotating the cutting tool, means for sharpening the cutting tool, means for vertically moving the cutting tool punching, means for rotating the punching tool and a support base on which are compactly grouped together all of said means which can be used simultaneously and independently of one another. 2. Dispositif selon la revendication 1, caractérisé en ce que l'outil de coupe est une lame verticale (20).2. Device according to claim 1, characterized in that the cutting tool is a vertical blade (20). 3. Dispositif selon l'une des revendications 1 ou 2, caractérisé en ce que l'outil de poinçonnage est un poinçon vertical (35).3. Device according to one of claims 1 or 2, characterized in that the punching tool is a vertical punch (35). 4. Dispositif selon la revendication 2, caractérisé en ce que lesdits moyens de vibration de l'outil de coupe comprennent un volant (14) accouplé directement sur l'arbre d'un moteur électrique (7) fixé à l'intérieur d'un boîtier mobile (6), un maneton (15) monté sur la face extérieure dudit volant, libre en rotation dont la position est excentrée par rapport à l'axe de rotation dudit volant (14) et qui possède une fente ouverte disposée radialement dans laquelle vient coulisser horizontalement une languette en T (17) d'un coulisseau (16) ajusté pour coulisser librement et sans tourner sur un guide creux (19) dont l'axe est concourant avec celui du volant (14), ledit coulisseau (16) venant s'enclencher dans la partie supérieure de la lame (20) tout en laissant libre sa rotation .4. Device according to claim 2, characterized in that said means for vibrating the cutting tool comprises a flywheel (14) directly coupled to the shaft of an electric motor (7) fixed inside a movable housing (6), a crank pin (15) mounted on the outer face of said flywheel, free in rotation whose position is eccentric relative to the axis of rotation of said flywheel (14) and which has an open slot disposed radially in which horizontally slides a T-shaped tongue (17) of a slide (16) adjusted to slide freely and without turning on a hollow guide (19) whose axis is concurrent with that of the flywheel (14), said slide (16) coming to engage in the upper part of the blade (20) while leaving free its rotation. 5. Dispositif selon la revendication 4, caractérisé en ce que le coulisseau (16) comporte un manchon vertical de section interne carrée ajusté sur le guide (19).5. Device according to claim 4, characterized in that the slide (16) comprises a vertical sleeve of square internal section adjusted on the guide (19). 6. Dispositif selon la revendication 4 ou 5, caractérisé en ce que la lame (20) est guidée verticalement par un coulisseau (21) qui est lui-même guidé verticalement dans un guide rotatif (22) monté dans l'embase (4).6. Device according to claim 4 or 5, characterized in that the blade (20) is guided vertically by a slide (21) which is itself guided vertically in a rotary guide (22) mounted in the base (4). 7. Dispositif selon la revendication 6, caractérisé en ce que la section du guidage entre le coulisseau (21) et le guide (22) est carrée pour empêcher toute rotation de l'un par rapport à l'autre.7. Device according to claim 6, characterized in that the section of the guide between the slide (21) and the guide (22) is square to prevent any rotation of one relative to the other. 8. Dispositif selon la revendication 6, caractérisé en ce que le coulisseau (21) porte à sa partie inférieure située sous le guide (22) un pied presseur (29) pour plaquer la matière à découper sur son support de coupe.8. Device according to claim 6, characterized in that the slide (21) carries at its lower part located under the guide (22) a presser foot (29) for pressing the material to be cut on its cutting support. 9. Dispositif selon la revendication 2 ou 4, caractérisé en ce que lesdits moyens de déplacement vertical de l'outil de coupe comprennent un vérin pneumatique (8), deux colonnes de guidage (5) maintenues à leurs extrémités supérieures par une pièce de liaison (13), un ressort de compression (31) disposé entre l'embase (4) et le boîtier mobile (6) renfermant le moteur électrique (7).9. Device according to claim 2 or 4, characterized in that said means for vertical displacement of the cutting tool comprises a pneumatic cylinder (8), two guide columns (5) held at their upper ends by a connecting piece (13), a compression spring (31) disposed between the base (4) and the movable housing (6) enclosing the electric motor (7). 10. Dispositif selon la revendication 2 ou 6, caractérisé en ce que lesdits moyens de rotation de l'outil de coupe comprennent un servo-moteur (26) relié par une transmission à courroie crantée (24) et deux poulies (23,25),au guide rotatif (22) entraînant en rotation ladite lame (20).10. Device according to claim 2 or 6, characterized in that said means for rotating the cutting tool comprise a servo motor (26) connected by a toothed belt transmission (24) and two pulleys (23,25) , to the rotary guide (22) causing said blade (20) to rotate. 11. Dispositif selon la revendication 10, caractérisé en ce que ledit servo-moteur (26) est monté verticalement sur un support (27) articulé par rapport à l'embase (4) pour régler la tension de la courroie (24).11. Device according to claim 10, characterized in that said servo-motor (26) is mounted vertically on a support (27) articulated relative to the base (4) to adjust the tension of the belt (24). 12. Dispositif selon la revendication 2 ou 8, caractérisé en ce que lesdits moyens d'affûtage de l'outil de coupe comprennent :
- deux languettes abrasives (42,43) articulées autour d'un axe vertical commun (48) fixé sur le pied presseur (29) et maintenues écartées par un ressort (45) de façon à tangenter la lame (20) sans la toucher,
- des plans inclinés (46) ménagés au débouché inférieur du guide (22) et destinés à resserrer les languettes (42,43) au contact de la lame (20) lorsque celle-ci est mise en position haute.12. Device according to claim 2 or 8, characterized in that said means for sharpening the cutting tool comprise:
two abrasive tongues (42, 43) articulated around a common vertical axis (48) fixed on the presser foot (29) and kept apart by a spring (45) so as to tangent the blade (20) without touching it,
- Inclined planes (46) formed at the lower outlet of the guide (22) and intended to tighten the tongues (42,43) in contact with the blade (20) when the latter is placed in the high position. 13. Dispositif selon la revendication 3, caractérisé en ce que lesdits moyens de déplacement vertical de l'outil de poinçonnage comprennent :
- un vérin pneumatique (30) fixé à la pièce de liaison (13),
- un guide (41) accroché de façon amovible dans un moyeu rotatif (37) de l'embase (4), la partie inférieure dudit outil de poinçonnage coulissant au travers du guide (41) et sa partie supérieure étant centrée dans l'extrémité (33) de la tige du vérin (30),
- un ressort de compression (36) disposé entre la face supérieure du moyeu (37) et la face inférieure de la tige du vérin (30) et au travers duquel passe le poinçon (35).13. Device according to claim 3, characterized in that said means for vertical displacement of the punching tool comprise:
- a pneumatic cylinder (30) fixed to the connecting piece (13),
- A guide (41) detachably hooked into a rotary hub (37) of the base (4), the lower part of said punching tool sliding through the guide (41) and its upper part being centered in the end (33) of the cylinder rod (30),
- A compression spring (36) disposed between the upper face of the hub (37) and the lower face of the cylinder rod (30) and through which the punch (35) passes. 14. Dispositif selon la revendication 3 ou 13, caractérisé en ce que lesdits moyens de rotation de l'outil de poinçonnage comprennent un moteur (26), des poulies (38,40) solidaires respectivement du moyeu (37) et de l'arbre du moteur (26) sur lesquelles est montée sous tension une courroie ronde (39).14. Device according to claim 3 or 13, characterized in that said means for rotating the punching tool comprise a motor (26), pulleys (38.40) integral respectively with the hub (37) and the shaft of the motor (26) on which a round belt (39) is mounted under tension. 15. Dispositif selon la revendication 14 ou 10, caractérisé en ce que le moteur (26) anime à la fois les moyens de rotation de l'outil de coupe et les moyens de rotation de l'outil de poinçonnage.15. Device according to claim 14 or 10, characterized in that the motor (26) drives both the means for rotating the cutting tool and the means for rotating the punching tool.
EP89402546A 1988-09-23 1989-09-18 Cutting and punching device for sheet materials Revoked EP0362019B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89402546T ATE88943T1 (en) 1988-09-23 1989-09-18 CUTTING AND PUNCHING DEVICE FOR MATERIAL WEBS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8812488 1988-09-23
FR8812488A FR2636879B1 (en) 1988-09-23 1988-09-23 CUTTING AND PUNCHING DEVICE FOR SHEET MATERIAL

Publications (2)

Publication Number Publication Date
EP0362019A1 true EP0362019A1 (en) 1990-04-04
EP0362019B1 EP0362019B1 (en) 1993-05-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP89402546A Revoked EP0362019B1 (en) 1988-09-23 1989-09-18 Cutting and punching device for sheet materials

Country Status (8)

Country Link
US (1) US5044238A (en)
EP (1) EP0362019B1 (en)
JP (1) JPH02139196A (en)
AT (1) ATE88943T1 (en)
CA (1) CA1316812C (en)
DE (1) DE68906341T2 (en)
ES (1) ES2041022T3 (en)
FR (1) FR2636879B1 (en)

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WO1993025352A1 (en) * 1992-06-11 1993-12-23 Clear Cut Limited A penetrated tool system
FR2695056A1 (en) * 1992-08-31 1994-03-04 Lectra Systemes Sa Cutting blade - has structured dimensions for rigidity when cutting layers of stacked fabrics
EP0620072A1 (en) * 1993-03-15 1994-10-19 Mabi Ag Method and apparatus for machining thin metal sheets
CN103419248A (en) * 2013-08-09 2013-12-04 亿和精密工业（苏州）有限公司 Automatic punching jig for injection-molded part
CN104608193A (en) * 2015-01-06 2015-05-13 池州睿成微电子有限公司 IC chip shearing equipment with floating device
CN104723402A (en) * 2015-01-06 2015-06-24 池州睿成微电子有限公司 IC chip die cutting device
CN105856513A (en) * 2016-05-26 2016-08-17 苏州万盛塑胶科技股份有限公司 Device for cutting off remnant material of injection-molded part
CN105881841A (en) * 2016-05-26 2016-08-24 苏州万盛塑胶科技股份有限公司 Cutting mechanism for injection molding material head

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JPH0815718B2 (en) * 1993-08-20 1996-02-21 株式会社島精機製作所 Blade width measuring device for cutting blades
JP3164496B2 (en) * 1995-10-09 2001-05-08 株式会社島精機製作所 Cutting machine
US6006636A (en) * 1997-07-24 1999-12-28 International Business Machines Corporation Programmable punch mechanism
US6748836B2 (en) * 1998-01-15 2004-06-15 Gerber Technology, Inc. Dual sharpener apparatus for maintaining the sharpness of the cutting edge on blades used to cut sheet-type work materials
US7798042B2 (en) * 2006-05-08 2010-09-21 Gerber Scientific International, Inc. Reciprocated knife having an integral tangent axis orientation drive
CN101648388B (en) * 2008-08-15 2013-09-11 上海和鹰机电科技股份有限公司 Cut-off knife used for automatic cutting machine
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CN104328645A (en) * 2014-10-27 2015-02-04 常州纳捷机电科技有限公司 Low-resistance puncher
US10456843B2 (en) * 2016-09-02 2019-10-29 Gerald A Gerst Vibrating cutter tool circular cutting jig
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CN106426384B (en) * 2016-12-20 2018-09-11 重庆淳祥电子科技有限公司 Produce the punching machine of keyboard circuit
CN111376340A (en) * 2020-04-29 2020-07-07 沈笠 Punching equipment and cutting device for soft material cutting device
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Publication number Priority date Publication date Assignee Title
WO1993025352A1 (en) * 1992-06-11 1993-12-23 Clear Cut Limited A penetrated tool system
FR2695056A1 (en) * 1992-08-31 1994-03-04 Lectra Systemes Sa Cutting blade - has structured dimensions for rigidity when cutting layers of stacked fabrics
EP0620072A1 (en) * 1993-03-15 1994-10-19 Mabi Ag Method and apparatus for machining thin metal sheets
CN103419248A (en) * 2013-08-09 2013-12-04 亿和精密工业（苏州）有限公司 Automatic punching jig for injection-molded part
CN103419248B (en) * 2013-08-09 2015-07-01 亿和精密工业（苏州）有限公司 Automatic punching jig for injection-molded part
CN104608193A (en) * 2015-01-06 2015-05-13 池州睿成微电子有限公司 IC chip shearing equipment with floating device
CN104723402A (en) * 2015-01-06 2015-06-24 池州睿成微电子有限公司 IC chip die cutting device
CN105856513A (en) * 2016-05-26 2016-08-17 苏州万盛塑胶科技股份有限公司 Device for cutting off remnant material of injection-molded part
CN105881841A (en) * 2016-05-26 2016-08-24 苏州万盛塑胶科技股份有限公司 Cutting mechanism for injection molding material head

Also Published As

Publication number Publication date
DE68906341T2 (en) 1993-12-02
JPH02139196A (en) 1990-05-29
ATE88943T1 (en) 1993-05-15
EP0362019B1 (en) 1993-05-05
ES2041022T3 (en) 1993-11-01
US5044238A (en) 1991-09-03
FR2636879A1 (en) 1990-03-30
DE68906341D1 (en) 1993-06-09
CA1316812C (en) 1993-04-27
FR2636879B1 (en) 1995-01-27

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