EP0074041B1 - Dispositif de découpe pour des pièces plates - Google Patents

Dispositif de découpe pour des pièces plates Download PDF

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Publication number
EP0074041B1
EP0074041B1 EP82107928A EP82107928A EP0074041B1 EP 0074041 B1 EP0074041 B1 EP 0074041B1 EP 82107928 A EP82107928 A EP 82107928A EP 82107928 A EP82107928 A EP 82107928A EP 0074041 B1 EP0074041 B1 EP 0074041B1
Authority
EP
European Patent Office
Prior art keywords
support
tool
cutting press
workpiece
press according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP82107928A
Other languages
German (de)
English (en)
Other versions
EP0074041A2 (fr
EP0074041A3 (en
Inventor
Walter Bredow
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.)
C Behrens AG
Original Assignee
C Behrens AG
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 C Behrens AG filed Critical C Behrens AG
Publication of EP0074041A2 publication Critical patent/EP0074041A2/fr
Publication of EP0074041A3 publication Critical patent/EP0074041A3/de
Application granted granted Critical
Publication of EP0074041B1 publication Critical patent/EP0074041B1/fr
Expired legal-status Critical Current

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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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18—Means for removing cut-out material or waste
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/28—Associations of cutting devices therewith
    • B21D43/287—Devices for handling sheet or strip material
    • 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
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2198—Tiltable or withdrawable support
    • 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
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/22—Means to move product laterally
    • Y10T83/2205—Reciprocating means
    • 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
    • Y10T83/8727—Plural tools selectively engageable with single drive
    • Y10T83/8732—Turret of tools

Definitions

  • the invention relates to a cutting press for processing tabular workpieces with a controlled coordinate table for workpiece positioning and a fixed support for the workpiece surrounding the work area of the tool, in which a middle workpiece support consisting of articulated support members is arranged in front of the tool work area is movably supported and guided in guides with a predetermined path arranged on both sides of the coordinate table and movable with it.
  • soldren cutting presses which are equipped with a numerically controlled coordinate table. These cutting presses can be designed either as a machine with a tool magazine in the form of a turret plate or as a machine with a single tool that is changed by hand, or as a machine with a tool magazine in which the tools are removed from the magazine with the aid of mechanical intermediate members and be brought into the working position.
  • the task of the coordinate table is to precisely position the plate-shaped workpiece to be punched or cut, usually a sheet. This means that the workpiece must be moved so that the selected tool is used in the correct position in the workpiece.
  • the coordinate table on the one hand performs movements to the tool or away from it, in the so-called y-axis, or in a direction transverse to it, in the so-called x-axis.
  • there is a fixed support support surrounding the tool as is a central support located in front of the tool, which is arranged between lateral workpiece supports which can be moved in the y-axis from the coordinate table and which are articulated from one another in the x- Axial support members exist.
  • This middle workpiece support is therefore designed like a blind.
  • the side guides with their predetermined path course ensure that the blind-like workpiece support is moved out of the range of movement of its clamping means when the coordinate table is moving, so to speak soaked under these clamping means.
  • the tool-side end that is to say the corresponding last support member, is firmly connected to the fixed support in the area of the tool. This results in a completely closed support surface in the area of the tool.
  • the invention has for its object to provide a cutting press of the type specified, in which even if larger cutouts or larger cut-out finished parts are to be produced, which due to their size can no longer fall through the opening of the respective lower tool itself, such Waste or fettig or useful parts can also be removed automatically, while maintaining the basic construction of the machine and with the least possible structural and control and functional effort. Interruptions to the controlled process and the associated time expenditure should be avoided entirely.
  • the middle workpiece support that is to say the jalousie-like workpiece support consisting of the articulated support members
  • the middle workpiece support in the direction of movement directed towards or away from the tool, i.e. in the y-axis, depending on the movement of the Coordinate table
  • the middle workpiece support in the direction of movement directed towards or away from the tool, i.e. in the y-axis, depending on the movement of the Coordinate table
  • a delivery opening can be opened and closed between the tool-side end of the middle workpiece support and the end of the support support facing it.
  • the workpiece is still supported.
  • the discharge opening can be closed again by the independent movement of the middle workpiece support, after which the original state has been established and the coordinate table can carry out its further positioning movements.
  • a particularly expedient structural and functional design of this cutting address for the movement of the middle workpiece support is achieved in a further embodiment of the invention in that the central workpiece support is connected both on its tool-side and on its tool-facing end to separate drive means arranged on the machine frame on the one hand and on the coordinate table on the other is.
  • the drive means are expediently designed as pressure-actuated piston-cylinder units, e.g. as pneumatic or hydraulic actuating devices, which act on the respective last support member of the middle workpiece support.
  • a conveyor for the removal of the released workpiece parts is expediently arranged below the delivery opening, which is released by the movement of the middle workpiece support, e.g. a conveyor belt.
  • the cut pieces falling down can be removed in a suitable manner, e.g. in a collection box arranged after the conveyor or conveyor belt.
  • a lifting and lowering driven ejection device is arranged above the middle workpiece support and the delivery opening, which in the lowered position via elastic pressing elements in the region of the Dispensing opening acts on the workpiece in the dispensing direction.
  • the push-out device expediently has a pressure plate, on the underside of which the push-out elements are arranged.
  • the push-out elements can even be made of elastic material such as rubber, e.g. Foam rubber or solid rubber, or also consist of other elastomers with different degrees of hardness corresponding to the application, or mechanical spring elements such as helical springs can be arranged at a suitable point.
  • the ejection device is expediently arranged on the machine frame above the delivery opening. If there is a lack of space in front of the machine frame, it is expedient if, in a further embodiment of the invention, the pushing-out device has two drives for the printing plate which lift and lower with different stroke lengths, on which the printing plate is pivotably articulated in such a way that it moves from the horizontal pressure position into one inclined rest position in front of the machine frame can be transferred. This makes it possible to transfer the pressure plate immediately after leaving the horizontal to the inclined rest position, in which it takes up much less space.
  • the middle workpiece support is also moved in the lateral guides in curved sections of these guides. These side guides are with the clamping devices of the coordinate table. It is possible that the last support member of the middle workpiece support gets into the curved area of the lateral guides when the workpiece clamping means are located close to the support support.
  • the last support member against spring action with the help of one of the lateral guides supported cam drive can be pivoted into the horizontal support position. With the help of the spring action, the last support member is always held securely in the horizontal.
  • the cam drive arranged on this lateral guide presses the last supporting member against the spring action again in the horizontal supporting position against a spring action, so that the horizontal support of the workpiece and in particular the cut-out workpiece part is always guaranteed.
  • the middle workpiece support is moved to release the discharge opening.
  • the cutting press which is shown largely schematically in the drawing, has a numerically controlled coordinate table K, which is basically designed in the usual manner. Its two directions of movement are indicated by the arrows x and y Fig. 1.
  • the y-axis designates the direction of movement to or from the tool, the x-axis designates the direction of movement running transverse to it.
  • This cutting press is used to machine tabular workpieces, in particular sheet metal, and in the exemplary embodiment has a turret plate 17.
  • the tool in the working position is designated 17a.
  • On the schematically indicated machine frame 16 there is a fixed support pad 6 surrounding the working area of the tool.
  • Clamping means 19 for the workpiece 40 are provided on the coordinate table K in the usual way.
  • Lateral workpiece supports 1 and 1 ' can be moved in the y direction with the guide rail 20 for movement in the x axis.
  • a central workpiece support 3 is arranged, which extends transversely to the y-travel direction, i.e. parallel to the x-direction and is connected to one another in an articulated manner, and which is thus designed like a blind.
  • This middle support pad 3 or its support members 7 are mounted and guided in suitable lateral guides 7a, which are only indicated schematically here, relative to the movement of the coordinate table.
  • the middle workpiece support 3 is extended in the direction facing away from the tool 17a beyond the support members 7 serving the actual workpiece support by further articulated connecting members 7 'in order to ensure the necessary guidance in the coordinate table K. 2 and 3, in particular, the lateral guides 7a have a predetermined, curved path in such a way that the workpiece support with its support members 7 and their connecting members 7 'are lowered below the range of movement of the clamping means 19 when they move in the direction with the coordinate table the tool 17a are moved so that the middle workpiece support "dives" under the clamping means 19, so to speak.
  • the middle workpiece support 3 is articulated at its tool-side end, namely at its last support member 14 facing the tool to the actuating member, here the piston rod, of two laterally arranged pressure-operated piston-cylinder units 4, 4 ', which in turn are schematically shown at their other end illustrated mounting brackets 8 and 8 'are articulated on the machine frame or on the stationary support pad 6.
  • the articulation point of the piston rods of the piston-cylinder units 4, 4 'on the middle workpiece support 3 is designated by 9.
  • Piston-cylinder units 5, 5 'articulated which in turn, as indicated schematically at 21, are attached to the coordinate table K.
  • a delivery opening 18 is opened between the middle workpiece support 3 or its last support member 14 and the end of the support support 6 facing it or the working area of the tool 17a. Since support is withdrawn from the cut-out workpiece part in this way, it falls down through this discharge opening 18 and is guided onto a conveyor belt 12 through a suitably arranged chute 11.
  • This conveyor belt 12 also transports the workpiece parts thus dispensed in the direction of arrow 10, so that they e.g. can be collected in a box 13 (Fig. 1).
  • the middle workpiece support 3 can also be designed in a different shape.
  • the decisive factor for the invention is the fact that it can be moved automatically to form a delivery opening in front of the working area of the tool, regardless of the position and movement of the coordinate table.
  • FIGS. 2 and 3 show a further embodiment of the invention in the form of an additional pushing-out device for the respectively cut-out workpiece section, which is to be delivered through the delivery opening 18 released by the middle workpiece support 3.
  • the push-out device serves in the manner described below to support the delivery of the cut-out workpiece section.
  • the squeezing device described above can also take various other forms. It is e.g. conceivable that the pressure plate 33 is brought into the printing position by a pivoting movement about a horizontal or about a vertical axis.
  • the pushing-out device can be constructed in the second preferred form described below with reference to FIGS. 6 to 8: the pressure plate 50 with the pressing elements 51 is articulated at two points 54 and 55 on two piston-cylinder units 52 and 53 hung up.
  • the piston-cylinder units 52 and 53 allow paths or stroke lengths of such different lengths that the pressure plate 50 is in the downward movement horizontally, so that the squeezing process, as previously described with reference to FIGS. 4 and 5, can take place.
  • the piston-cylinder unit 52 is fixedly connected to the machine frame 16 with the holder 56, while the piston-cylinder unit 53 is fastened to the machine frame 16 via a joint 57 and the holder 58.
  • the pressing elements 34 and 51 can be used in various forms.
  • Pressure elements with a circular, square or rectangular base are conceivable.
  • the arrangement and / or the shape of the pressing elements can be adapted to the shape. It is conceivable to concentrate individual pressure pieces only on the surface of the part to be pressed out, in the exemplary embodiment part 41, and to leave the edge free, or else a pressing element is used which corresponds to the shape of the cut-out and thus to be pressed out part 41, the pressing element advantageously being around should be a small amount smaller.
  • the safe expression of the cut-out sections can depend on the fact that the extraction of the workpiece 40 with the section 41 freely movable therein from the working area of the tool or the laser beam onto the front support members of the middle workpiece support 14 or 7 takes place in such a way that it is complete lie horizontally. Due to the construction of the guide curve 7a, this is not always the case, especially not when the workpiece clamping means 19 are located close to the support pad 6. This problem is solved by the embodiment of the invention described below and shown in FIGS. 7 and 8: To keep the support member 14 horizontal, e . According to the invention, this is not firmly connected or screwed to the associated support chain link 60, but is articulatedly connected to it at point 63. G
  • the support member 14 is normally pulled firmly onto the support 62. If the workpiece clamping means 19, which are moved simultaneously with the guide curve 7a, approach the support support 6, then the roller 67, which runs onto a cam 68, which is firmly connected to the control curve 7a by the holder 69, and that by a Opening 64 in the base 62 passing through connecting bolts 65, the support member 14 so raised that its surface is horizontal. This measure ensures that the cut-out parts can be pulled properly into a position in which the pressing out is possible.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Laser Beam Processing (AREA)
  • Press Drives And Press Lines (AREA)

Claims (9)

1. Dispositif de découpage pour pièces plates, avec une table positionnement (K) pour le positionnement des pièces, et un moyen fixe de support des pièces entourant la zone de travail, un dispositif intermédiaire de soutien (3) des pièces étant placé avant la zone de travail et étant constitué d'éléments de soutien articulés les uns aux autres, soutenus et guidés selon un trajet prédéterminé par des glissières mobiles fixées dans deux côtés de la table de positionnement, caractérisé en ce que le dispositif intermédiaire de soutien (3) est mobile dans une direction allant vers l'outil (17, 17a) ou s'en écartant (axe y) indépendamment du déplacement de la table de positionnement (K) de telle façon qu'une ouverture de décharge (18) peut s'ouvrir et se fermer entre l'extrémité côté outil (14) du dispositif intermédiaire de soutien (3) et l'extrémité qui lui fait face du moyen de support des pièces (6).
2. Dispositif selon la revendication 1, caractérisé en ce que le dispositif intermédiaire de soutien (3), tant de son côté outil (14) qu'à son extrémité opposée à l'outil, est. relié au bâti de la machine (16) d'un côté et à la table de positionnement (K) par des moyens d'actionnements séparés (4, 4'; 5, 5').
3. Dispositif selon la revendication 2, caractérisé en ce que les moyens d'actionnement sont constitués par des ensembles piston-cylindre (4, 4'; 5, 5') actionnés par un moyen de pression qui attquent le dernier élément de soutien (14 ou 15) du dispositif intermédiaire de soutien.
4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce qu'un moyen transporteur (12) est disposé sous l'ouverture de décharge (18) pour l'évacuation des parties libérées de la pièce.
5. Dispositif selon l'une des revendications 1 à 4, caràctérisé en ce qu'un dispositif de poussage (31 à 34; 50 à 53) déplaçable de haut en bas et de bas en haut est placé au-dessus du dispositif intermédiaire de soutien (3) et de l'ouverture de décharge (18), ce dispositif de poussage agissant sur la pièce (40,41) dans la direction de décharge et dans le domaine de l'ouverture de décharge, par l'intermédiaire d'éléments de poussage élastiques, quand il est en position basse.
6. Dispositif selon la revendication 5, caractérisé en ce que le dispositif de poussage comporte une plaque de pression (33) sur la face inférieure de laquelle sont fixés les éléments de poussage (34).
7. Dispositif selon la revendication 5 ou 6, caractérisé en ce que les moyens d'actionnement du dispositif de poussage sont constitués d'au moins un ensemble piston-cylindre (31; 52, 53) à la tige de piston duquel est fixée la plaque de pression (33; 50).
8. Dispositif selon la revendication 6 ou 7, caractérisé en ce que le dispositif de poussage est pourvu de deux moyens d'actionnement (52, 53) ayant des courses différentes, pour lever et abaisser la plaque de pression (50), celle-ci étant articulée sur ces moyens d'actionnement de telle façon qu'elle peut passer de la position horizontale d'action à une position de repos oblique sur l'avant du chassis de la machine (16).
9. Dispositif selon l'une des revendications 1 à 8, caractérisé en ce que le dernier élément de soutien (14) du dispositif intermédiaire de soutien (3) peut être amené à prendre une orientation horizontale à l'aide de cames (65 à 68) portées par les guides latéraux (7a) et malgré un ressort (66).
EP82107928A 1981-09-05 1982-08-28 Dispositif de découpe pour des pièces plates Expired EP0074041B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3135266A DE3135266C2 (de) 1981-09-05 1981-09-05 Schneidpresse zum Herausschneiden oder -trennen von Teilen aus einer Werkstücktafel
DE3135266 1981-09-05

Publications (3)

Publication Number Publication Date
EP0074041A2 EP0074041A2 (fr) 1983-03-16
EP0074041A3 EP0074041A3 (en) 1984-07-18
EP0074041B1 true EP0074041B1 (fr) 1986-02-26

Family

ID=6140993

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82107928A Expired EP0074041B1 (fr) 1981-09-05 1982-08-28 Dispositif de découpe pour des pièces plates

Country Status (3)

Country Link
US (1) US4452115A (fr)
EP (1) EP0074041B1 (fr)
DE (2) DE3135266C2 (fr)

Families Citing this family (9)

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AT377457B (de) * 1983-08-17 1985-03-25 Voest Alpine Ag Presse zum bearbeiten von blechen
DE3637204A1 (de) * 1986-10-31 1988-05-19 Behrens Ag C Schneidpresse
FR2623438A1 (fr) * 1987-11-20 1989-05-26 Gleyze Jean Installation permettant la decoupe de flans elementaires, en carton notamment, destines a la realisation d'emballages
US4986153A (en) * 1989-09-05 1991-01-22 Strippit Inc. Method and apparatus for the parting and removal of pieces from punch presses
WO1993006978A1 (fr) * 1991-10-11 1993-04-15 William H. Reimbold D.B.A. Anaheim Automation Presse a decouper et procede d'utilisation
US6127648A (en) 1999-04-30 2000-10-03 W. A. Whitney Co. Laser-equipped machine tool having a retractable scrap removal system
US6246025B1 (en) * 1999-04-30 2001-06-12 W. A. Whitney Co. Insulated slag collection bed for a laser-equipped machine tool
DE102016208872A1 (de) 2016-05-23 2017-11-23 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Maschine zum trennenden Bearbeiten eines plattenförmigen Werkstücks und Verfahren zum Ausdrücken eines freigetrennten Werkstückteils
CN106890908B (zh) * 2017-04-07 2019-03-29 江苏中海重型机床有限公司 一种折弯机用工作台出料装置

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CA784527A (en) * 1968-05-07 The Warner And Swasey Company Disappearing table
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Also Published As

Publication number Publication date
DE3269401D1 (en) 1986-04-03
US4452115A (en) 1984-06-05
DE3135266A1 (de) 1983-03-24
DE3135266C2 (de) 1983-11-17
EP0074041A2 (fr) 1983-03-16
EP0074041A3 (en) 1984-07-18

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