EP0097637A2 - Dispositif pour amener des feuilles de tôle à une machine à plier - Google Patents

Dispositif pour amener des feuilles de tôle à une machine à plier Download PDF

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Publication number
EP0097637A2
EP0097637A2 EP83890036A EP83890036A EP0097637A2 EP 0097637 A2 EP0097637 A2 EP 0097637A2 EP 83890036 A EP83890036 A EP 83890036A EP 83890036 A EP83890036 A EP 83890036A EP 0097637 A2 EP0097637 A2 EP 0097637A2
Authority
EP
European Patent Office
Prior art keywords
clamping
jaw
counter
rotary drive
carriage
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.)
Withdrawn
Application number
EP83890036A
Other languages
German (de)
English (en)
Other versions
EP0097637A3 (fr
Inventor
Johann Aschauer
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.)
Voestalpine AG
Original Assignee
Voestalpine 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 Voestalpine AG filed Critical Voestalpine AG
Publication of EP0097637A2 publication Critical patent/EP0097637A2/fr
Publication of EP0097637A3 publication Critical patent/EP0097637A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers
    • B21D43/105—Manipulators, i.e. mechanical arms carrying a gripper element having several degrees of freedom
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work

Definitions

  • the invention relates to a device for feeding sheet metal to a bending machine, consisting of a movable on a frame, a clamping device for the sheet metal carrying carriage and a rotary drive for the sheet metal, which cooperates with a rotatably mounted counter jaw to one to Clamping plane of the metal sheets has a vertical axis of rotation drivable clamping jaw.
  • the clamping jaws of the clamping device are rotatably mounted about a common axis, a clamping jaw being connected to a rotary drive, so that the workpiece held between the clamping jaws via the rotary drive ver in the desired working position can be pivoted.
  • a disadvantage of this known device is that the provision of the rotary drive on the carriage increases its mass, which brings difficulties with regard to the carriage acceleration and thus with regard to idle times. If you try to keep the mass of the rotary drive comparatively small, the index plate that is absolutely necessary for aligning the workpiece must inevitably be small, which greatly impairs the accuracy of handling.
  • the rotary drive which is arranged coaxially to the clamping jaws, takes up space in the front slide part which would be required in order to be able to move the slide as close as possible to the bending machine.
  • the clamping force places a load on the rotary drive, which in turn impairs the accuracy and speed of the workpiece handling.
  • the known device is therefore not suitable for feeding heavy workpieces to a bending machine quickly and precisely.
  • the invention is therefore based on the object to avoid these deficiencies and to improve a device for feeding metal sheets to a bending machine of the type described in such a way that the workpieces can be precisely aligned despite a comparatively small slide mass.
  • the invention achieves the stated object in that the rotary drive is mounted on the frame and in that the clamping device of the slide and the clamping device consisting of the clamping jaw of the rotary drive and its counter jaw can be actuated alternately.
  • the arrangement of a rotary drive with its own clamping device ensures that the metal sheets to be bent can be handled quickly and precisely.
  • the release of the slide from the rotary drive leaves larger slides accelerations and allows a very close approach of the slide to the bending machine.
  • the construction of the rotary actuator is hardly subject to any restrictions due to its mounting in the frame, which enables the provision of large index plates, which form the basis for the precise handling of heavy workpieces.
  • no particular value has to be placed on the mass of the rotary drive and the loads on the rotary drive can remain comparatively small, the speed with regard to the rotational adjustment of the workpieces can also be increased.
  • the clamping jaw of the rotary drive and its counter jaw mounted in the frame in the engage retracted carriage position in recesses of clamping jaws of the clamping device of the carriage which are open against the clamping jaw or the counter jaw.
  • This allows the clamping device and the clamping device for the rotary drive to act directly next to one another on the workpiece, so that no workpiece displacements can result when the workpiece is taken over from one of these devices to the other.
  • the engagement of the clamping jaw or the counter jaw in recesses of the clamping jaws of the clamping devices allows a coaxial arrangement of these jaws and thus an unimpeded takeover of the workpiece by the clamping device after rotation.
  • the clamping jaw of the rotary drive can be in the retracted carriage position in an open position against the clamping jaw Recess of a clamping jaw arranged with respect to a counter clamping jaw or between two clamping jaws of the clamping device interacting with a common counter clamping jaw, the counter clamping jaw being rotatably mounted in the slide about an axis perpendicular to the clamping plane of the metal sheets and forming the counter jaw for the clamping jaw of the rotary drive.
  • the clamping jaw of the rotary drive can be displaceably mounted in the frame perpendicular to the clamping plane and can be connected to a lifting drive which is displaceable in relation to the frame and which is supported on the slide in the retracted slide position. If the lifting drive is actuated with the carriage retracted, it must first be supported on the carriage before the clamping jaw can be pressed against the counter jaw. This lifting drive support on the slide causes a force closure within the slide, so that the clamping forces that occur cannot make themselves noticeable to the outside.
  • the counter-jaw interacting with the clamping jaw of the rotary drive has a rotating plate with a centering which is mounted on a supporting body and can be displaced to a limited extent parallel to the clamping plane has bore in which a spring-loaded centering pin, which is guided displaceably in the supporting body, engages, which carries an actuating finger protruding from the centering hole and having a smaller diameter than the centering hole. Since the turntable can be moved parallel to the clamping plane, deformations occurring during clamping in the area of the support when the workpiece is rotated cannot lead to displacements between the jaws clamping the workpiece and the workpiece, so that this also eliminates any positional inaccuracies caused by this.
  • the turntable is centered when the clamping device is released, which releases the actuating finger of the centering pin, which is pressed into the centering hole of the turntable due to its spring loading.
  • the clamping device is closed, the centering pin is pushed in against the load spring via the actuating finger, which projects through the centering hole above the turntable, the centering pin being pressed out of the centering hole.
  • the difference in diameter between the center hole and the actuating finger ensures that the rotary table can move freely. If the turntable overlaps the support body from the outside, no rotational support on the counter jaw is possible.
  • a non-rotatable support may also be desired in the area of the clamping jaw having the turntable for clamping the workpiece in the clamping device of the slide.
  • the support body can grip around the outside of the turntable and form a non-rotatable clamping jaw.
  • the support body must be set back slightly in relation to the clamping surface of the turntable in order to ensure that the workpiece can be freely rotated. This setback means for the clamping device of the slide a necessary deformation of the workpiece, which must lie in the elastic range and enables a particularly good hold for the workpiece.
  • the device shown for feeding sheet metal sheets 1 to a bending machine 2 indicated by dash-dotted lines essentially consists of a frame 3 which carries a carriage 5 which can be moved on two guide rods 4 and which is driven by a motor 6 driven spindle 7 is driven, which cooperates with a nut 8.
  • the carriage 5 forms a frame 9, in which a clamping device IO for holding the metal sheets 1 to be bent is mounted.
  • this clamping device 10 has two fixed lower clamping jaws 11 which cooperate with a common upper clamping jaw 12.
  • the upper, common clamping jaw 12 is fastened to a clamping cylinder 13 which is arranged on the upper cross member of the frame 9.
  • the metal sheet 1 can consequently be clamped in the carriage 5 with the aid of the tensioning device 10 and fed to the bending machine 2 in a manner that is suitable for bending.
  • the rotary drive 14 provided for this purpose is, however, not arranged on the slide 5, but rather on a cantilever 15 of the frame 3 protruding against the slide 5 and essentially consists of a motor 16 which drives a shaft 18 via a gear transmission 17 which carries a clamping jaw 19 which interacts with the clamping jaw 12 as a counter jaw. If the carriage 5 is moved into the position indicated by dash-dotted lines in FIG. 1, the clamping jaw 19 of the rotary drive 14 engages between the two lower clamping jaws 11, which are arranged at a corresponding distance from one another for this purpose.
  • the jaw 19 can thus press the sheet 1 against the upper jaw 12 of the carriage 5, so that the sheet 1 with the jaw 19 and its associated jaw 12 can be raised and rotated.
  • a lifting drive 20 is connected to the shaft 18 which is slidably guided in the boom 15.
  • This lifting piston 20 having two pistons 21 However, when it is loaded, it is not supported on the frame 3, but rather on the frame 9 of the retracted slide 5, so that the clamping forces which occur are closed via the frame 9 of the slide 5 and not to the outside on the slide guide and the like. can work.
  • the upper jaw 12 To rotate the sheet metal plate 1, which was lifted off the lower jaws 11 against the force of the clamping cylinder 13 with the aid of the clamping jaw 19, the upper jaw 12 must be rotatable about an axis coaxial with the shaft 18.
  • This rotatability is ensured according to FIGS. 7 and 8 by a turntable 22, which is mounted in a supporting body 23 that overlaps it, with the help of balls 25 held in a plate cage 24. Because the support body 23 is opposite the clamping surface of the turntable 22 is slightly set back, which is not shown in the drawing due to the small distance, the workpiece clamped between the clamping jaw 19 and the clamping jaw 12 serving as the counter jaw can be rotated freely via the shaft 18.
  • the centering of the turntable 22 takes place via a centering pin 26 which engages in a centering bore 27 of the turntable 22.
  • this centering pin 26 has an actuating finger 28 which extends through the centering bore 27 and has a smaller diameter than the centering bore 27. Since the centering pin 26 is loaded with a spring, the centering pin 26 only engages in the centering hole 27 when the actuating finger 28 can pass through the centering hole 27 unhindered.
  • the centering pin 26 is consequently actuated by the actuation projecting beyond the turntable 22 against the metal sheet 1 finger 28 pressed out of the centering bore 27, which opens a play for the turntable 22 parallel to the clamping plane to the extent of the diameter difference between the centering bore 27 and the actuating finger 28.
  • the thus enabled, limited displaceability of the turntable 22 ensures a tolerance compensation with respect to the axis of rotation of the turntable 22 with respect to the shaft 18 and prevents a relative displacement of the sheet metal plate 1 with respect to the clamping jaw 19, so that after the sheet metal plate 1 has been rotated, it is transferred back to the clamping device 10 in a precisely aligned manner can be.
  • the clamping jaw 19 is lowered via the lifting drive 20, the clamping cylinder 13, which is under the application pressure, pressing the metal sheet 1 against the lower clamping jaws 11. Because of the setback of the support body 23, which forms the counter-clamping jaw interacting with the clamping jaws 11, there is an elastic deformation of the metal sheet 1, which is therefore held immovably on the carriage 5 between the clamping jaws 11 and 12. After the sheet metal plate 1 has been bent, the clamping jaw 12 is raised above the clamping cylinder 13 and the clamping device 10 is released, the centering bolt 26 being pressed into the centering bore 27 on account of its spring loading and centering the turntable 22 with respect to the support body 23.
  • the turntable 22 can enclose the support body 23 on the outside, as shown in FIGS. 5 and 6.
  • the clamping device consisting of the clamping jaw 19 and the counter jaw 29
  • the actuating finger 28 is pressed from the position shown in FIG. 5 into the position according to FIG. 6, which allows the limited displacement of the turntable 22 relative to the support body 23 parallel to the clamping plane .
  • the effect of these measures corresponds to the effects discussed in connection with FIGS. 7 and 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP83890036A 1982-06-23 1983-03-15 Dispositif pour amener des feuilles de tôle à une machine à plier Withdrawn EP0097637A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2420/82 1982-06-23
AT0242082A AT373174B (de) 1982-06-23 1982-06-23 Vorrichtung zum zufuehren von blechtafeln zu einer biegemaschine

Publications (2)

Publication Number Publication Date
EP0097637A2 true EP0097637A2 (fr) 1984-01-04
EP0097637A3 EP0097637A3 (fr) 1986-05-14

Family

ID=3534028

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83890036A Withdrawn EP0097637A3 (fr) 1982-06-23 1983-03-15 Dispositif pour amener des feuilles de tôle à une machine à plier

Country Status (5)

Country Link
US (1) US4573861A (fr)
EP (1) EP0097637A3 (fr)
AT (1) AT373174B (fr)
DE (1) DE8308085U1 (fr)
ES (1) ES8404882A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987005838A1 (fr) * 1986-04-03 1987-10-08 Voest-Alpine Aktiengesellschaft Presse plieuse pour plier les cotes des toles essentiellement rectangulaires
EP0300984A2 (fr) * 1987-07-23 1989-01-25 Antonio Codatto Manipulateur pour feuilles de tôle
AT401026B (de) * 1987-12-15 1996-05-28 Amada Co Ltd Verfahren und einrichtung zum steuern eines manipulators für eine blechbiegemaschine
WO1998014288A1 (fr) * 1996-09-30 1998-04-09 Reinhardt Maschinenbau Gmbh Machine a usiner
WO2018071938A1 (fr) * 2016-10-20 2018-04-26 Trumpf Maschinen Austria Gmbh & Co. Kg. Installation de fabrication présentant un dispositif de manipulation

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT378701B (de) * 1983-10-04 1985-09-25 Haemmerle Ag Einrichtung zur handhabung von blechtafeln
JPS61284379A (ja) * 1985-06-06 1986-12-15 本田技研工業株式会社 ロボツト装置
US5138865A (en) * 1991-04-23 1992-08-18 Antonio Codatto Gripping assembly for a manipulator for plate sheets
ES2063672B1 (es) * 1992-12-24 1996-12-01 Goiti S Coop Ltda Dispositivo perfeccionado de manipulador para alimentacion de chapas en maquinas plegadoras.
DE19621658C2 (de) * 1996-05-30 1999-11-04 Eht Werkzeugmaschinen Gmbh Bearbeitungsmaschine für plattenförmige Werkstücke, insbesondere zur Erzeugung von gebogenen Rändern an Blechteilen
US6065325A (en) * 1999-05-26 2000-05-23 Tsai; Sou-Jun Automatic stamping machine
US6518747B2 (en) * 2001-02-16 2003-02-11 Quantum Design, Inc. Method and apparatus for quantitative determination of accumulations of magnetic particles

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1449427A (en) * 1920-06-02 1923-03-27 Mccabe Hugh Flanging machine
US2937553A (en) * 1955-09-12 1960-05-24 Smith Corp A O Method and apparatus for cutting blanks and rotating alternate pieces into feeding alignment
DE2034518A1 (en) * 1970-07-11 1972-01-20 Karl Mengele & Sohne Maschinenfa brik und Eisengießerei, 8870 Gunzburg Folding press feeding unit - with electromagnetic or suction pad flocking of feed table
FR2403126A1 (fr) * 1977-09-19 1979-04-13 Salvagnini Transferica Spa Machine pour la production de panneaux rectangulaires de tole a bords plies
FR2424786A1 (fr) * 1978-05-03 1979-11-30 Inst Problem Upravlenia Avtoma Installation pour la coupe de plats de grandes dimensions
FR2477929A1 (fr) * 1980-03-15 1981-09-18 Mengele & Soehne Masch Karl Dispositif d'amenee de feuilles pour cisailles
EP0069661A1 (fr) * 1981-07-07 1983-01-12 Ets Y. JOUANEL S.A. Plieuse automatique de tôles

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2222504A (en) * 1940-05-03 1940-11-19 Economic Machinery Co Registering device for labeling machines
US2293553A (en) * 1940-07-30 1942-08-18 Pneumatic Scale Corp Container handling and registering apparatus
US3604570A (en) * 1969-04-16 1971-09-14 Sterling Detroit Co Apparatus for handling die casting shots
DE1941835A1 (de) * 1969-08-16 1971-04-22 Liebergeld Rudolf Dipl Ing Vorrichtung zum Transportieren eines langen Werkstueckes
US3910420A (en) * 1973-06-25 1975-10-07 Edward L Rich Article transfer and support apparatus
US4016968A (en) * 1975-09-05 1977-04-12 The Continental Group, Inc. Method and apparatus for orienting can ends
US4133423A (en) * 1977-10-21 1979-01-09 Kearney & Trecker Corporation Shuttle system for machine tool
DE2805532A1 (de) * 1978-02-10 1979-08-16 Trumpf Maschinen Ag Werkzeugmaschine mit einer einstellbaren vorrichtung zum festhalten und verschieben eines werkstuecks gegenueber einem werkzeug

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1449427A (en) * 1920-06-02 1923-03-27 Mccabe Hugh Flanging machine
US2937553A (en) * 1955-09-12 1960-05-24 Smith Corp A O Method and apparatus for cutting blanks and rotating alternate pieces into feeding alignment
DE2034518A1 (en) * 1970-07-11 1972-01-20 Karl Mengele & Sohne Maschinenfa brik und Eisengießerei, 8870 Gunzburg Folding press feeding unit - with electromagnetic or suction pad flocking of feed table
FR2403126A1 (fr) * 1977-09-19 1979-04-13 Salvagnini Transferica Spa Machine pour la production de panneaux rectangulaires de tole a bords plies
FR2424786A1 (fr) * 1978-05-03 1979-11-30 Inst Problem Upravlenia Avtoma Installation pour la coupe de plats de grandes dimensions
FR2477929A1 (fr) * 1980-03-15 1981-09-18 Mengele & Soehne Masch Karl Dispositif d'amenee de feuilles pour cisailles
EP0069661A1 (fr) * 1981-07-07 1983-01-12 Ets Y. JOUANEL S.A. Plieuse automatique de tôles

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987005838A1 (fr) * 1986-04-03 1987-10-08 Voest-Alpine Aktiengesellschaft Presse plieuse pour plier les cotes des toles essentiellement rectangulaires
EP0300984A2 (fr) * 1987-07-23 1989-01-25 Antonio Codatto Manipulateur pour feuilles de tôle
EP0300984A3 (en) * 1987-07-23 1990-10-24 Antonio Codatto Manipulator for metal sheets
AT401026B (de) * 1987-12-15 1996-05-28 Amada Co Ltd Verfahren und einrichtung zum steuern eines manipulators für eine blechbiegemaschine
WO1998014288A1 (fr) * 1996-09-30 1998-04-09 Reinhardt Maschinenbau Gmbh Machine a usiner
US5964119A (en) * 1996-09-30 1999-10-12 Reinhardt Maschinenbau Gmbh Processing machine
WO2018071938A1 (fr) * 2016-10-20 2018-04-26 Trumpf Maschinen Austria Gmbh & Co. Kg. Installation de fabrication présentant un dispositif de manipulation
US11491524B2 (en) 2016-10-20 2022-11-08 Trumpf Maschinen Austria Gmbh & Co. Kg Production installation having a manipulation device

Also Published As

Publication number Publication date
ES523554A0 (es) 1984-05-16
US4573861A (en) 1986-03-04
ATA242082A (de) 1983-05-15
ES8404882A1 (es) 1984-05-16
AT373174B (de) 1983-12-27
EP0097637A3 (fr) 1986-05-14
DE8308085U1 (de) 1983-08-04

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Inventor name: ASCHAUER, JOHANN