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EP2686161B1 - Presse d'emboutissage dotée de deux coulisseaux accouplables - Google Patents

Presse d'emboutissage dotée de deux coulisseaux accouplables Download PDF

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Publication number
EP2686161B1
EP2686161B1 EP12710484.2A EP12710484A EP2686161B1 EP 2686161 B1 EP2686161 B1 EP 2686161B1 EP 12710484 A EP12710484 A EP 12710484A EP 2686161 B1 EP2686161 B1 EP 2686161B1
Authority
EP
European Patent Office
Prior art keywords
slide
drives
drawing press
plunger
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.)
Not-in-force
Application number
EP12710484.2A
Other languages
German (de)
English (en)
Other versions
EP2686161A1 (fr
Inventor
Martin Schmeink
Thomas Menzel
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.)
L Schuler GmbH
Original Assignee
L Schuler GmbH
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
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Application filed by L Schuler GmbH filed Critical L Schuler GmbH
Publication of EP2686161A1 publication Critical patent/EP2686161A1/fr
Application granted granted Critical
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Not-in-force 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/22—Deep-drawing with devices for holding the edge of the blanks
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/24—Deep-drawing involving two drawing operations having effects in opposite directions with respect to the blank
    • 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
    • B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/10—Devices controlling or operating blank holders independently, or in conjunction with dies
    • B21D24/12—Devices controlling or operating blank holders independently, or in conjunction with dies mechanically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/10—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism
    • B30B1/14—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism operated by cams, eccentrics, or cranks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/12—Clutches specially adapted for presses

Definitions

  • the invention relates to a drawing press, which is used for the production of Umformblech theory, such as Karoserie tone.
  • a sheet-metal retaining ring is arranged relatively movable to a drawing punch.
  • the sheet holding ring is applied to the board to be reshaped and exerts a holding force or clamping force, while the drawing punch then forms the board in cooperation with a mold.
  • a press is for example from the DE 24 19 389 known.
  • a hydraulic drawing press is provided, in which both a drawing punch, as well as a sheet-metal retaining ring 12 are attached to a movable in the direction of the ram. During the downward movement of the plunger, therefore, first of all the sheet-metal retaining ring on the board strikes and only with continued downward movement is a forming of the board by the drawing punch.
  • DE 24 19 389 A1 describes a drawing press with a first plunger which is movably supported by a first plunger drive in a working direction in a press frame, and with a second plunger, which is mounted by a second plunger drive in the working direction movable in a press frame.
  • An eccentric drive has an eccentric shaft, which is connected via connecting rods with the outer tappet.
  • One Toggle lever drive with two articulated levers connects the inner tappet via a further lever with the eccentric shaft.
  • the drawing press has a first plunger, which can be driven by a first plunger drive in one working direction. Furthermore, the drawing press has a second plunger, which is drivable by means of a second plunger drive.
  • the two plunger drives each have an electric motor. Both plunger drives can be activated independently of each other, so that the movements of the first plunger and the second plunger relative to the lower tool or to the board are independently feasible and specifiable.
  • To control the plunger drives is a control unit.
  • the drawing press also has a coupling means, which is switchable between a coupling state and a decoupling state.
  • the coupling means is a mechanical coupling means, which in one embodiment produces a direct mechanical connection between the two tappets and, in another embodiment, effects a kinematic coupling of the two tappet drives.
  • the drawing press is therefore switchable between a single-acting mode in the coupling state and a double-acting mode in the decoupling state.
  • the second plunger In the decoupling state, the second plunger can be used for example as a hold-down. Its position, its movement speed and / or its clamping force, with which it holds the board, is freely definable and independent of the position and / or the speed with which the first plunger moves, which can serve as a drawing punch, for example.
  • the sheet holding force, which is exerted by the second plunger in this mode and their course during the drawing process are decisive for the quality of the produced Umformteils. Due to the independence of the two plunger movements, the sheet-holding force exerted by the second plunger on the board can be adapted to the requirements of the drawing operation, such as drawing. the material and the thickness of the board are adjusted.
  • this sheet holding force can be adjusted, for example, to the speed of the first drawing punch.
  • the sheet holding force can be adjusted, for example, to the speed of the first drawing punch.
  • the two plungers move together in the working direction. This makes it possible to press the two plungers against the board with a large forming force.
  • the forces provided in the working direction by the first ram drive and the second ram drive can be added in the coupling state to a high total force.
  • it may also be sufficient in the coupling state if only one of the plunger drives is moved.
  • the two plungers preferably form a common enlarged clamping surface in the coupling state.
  • the drawing press works as a single-acting press together with a drawing tool, which is mounted in this mode of operation on the press frame.
  • the two plunger drives are kinematically identical. They can be designed, for example, as eccentric drives or joint drives. Due to the identical design of the two plunger drives is achieved that in the case of coupling by the control unit can easily be the same control of both plunger drives, if the pulling force required for the drawing process is greater than the force that can be applied by a single plunger drive. A complex control with different specifications for each ram drive is avoided in this case.
  • the coupling means can for example produce a kinematic connection between the two plunger drives.
  • it can be configured as a switchable shaft coupling or as an intermediate gear between the two plunger drives.
  • the coupling means is driven by the control unit to switch between the coupling state and the decoupling state.
  • the operating state of the drawing press can be changed very quickly and easily in this way.
  • the electric motors of the plunger drives can be designed as servomotors or torque motors. These allow precise adjustment of the position and / or force of the plunger in the working direction.
  • the ram drives are, so to speak, "dry" and require no hydraulic fluid.
  • the two ram drives are in the preferred embodiment the drawing press designed as top drives and therefore arranged above the two plunger on the press frame. The ram in the direction opposite lower tool can be performed completely unpowered.
  • FIGS. 1 and 2 a drawing press 10 is shown, which has a press frame 11, which has a plurality of substantially vertically extending stand 12, which carry a head 13.
  • the lower part of the press frame 11 includes a base 14 to which the supports 12 are connected.
  • the base 14, the stand 12 and the head 13 form a closed, rigid frame.
  • a first plunger 17 and a second plunger 18 are arranged in a working direction A and, for example, substantially vertically movable.
  • the first plunger 17 is designed as an inner plunger, which is surrounded by the second plunger 18 annular.
  • the two plungers 17, 18 are arranged coaxially with each other.
  • an upper tool part 19 is arranged, for example, which cooperates with a lower tool part 20 of a lower tool 21 for forming a circuit board 22.
  • the first plunger drive 25 has a first electric motor 26, for example a servomotor or a torque motor, which drives a first eccentric shaft 27.
  • a first electric motor 26 for example a servomotor or a torque motor, which drives a first eccentric shaft 27.
  • At least one eccentric 28 and, according to the example, two eccentrics 28 are arranged on the first eccentric shaft, on each of which rotatably a connecting rod 29 is mounted.
  • Each connecting rod 29 is pivotally connected to the eccentric 28 side with the first plunger 17.
  • the connecting rods 29 displaced in the working direction A, whereby the up and down movement of the first plunger 17 in the working direction A can be caused.
  • a second ram drive 30 with a second Electric motor 31 serves to drive the second plunger 18.
  • the two plunger drives are constructed kinematically identical.
  • the second electric motor 31 thus drives a second eccentric shaft 32, on which at least one and, for example, two eccentrics 28 are arranged in a rotationally fixed manner.
  • 25 two connecting rods 29 are rotatably mounted analogously to the first eccentric, which are pivotally connected to the second plunger 28.
  • the two plunger drives 25, 30 are constructed kinematically identical. They have the same electric motors 26, 31 and equal ratios, so that when driving the plunger drives 25, 30 with the same control variable, the same movement of the respective associated plunger 17, 18 is caused in the working direction A.
  • the connecting rods 29 of the plunger drives 25, 30 are the same length. With the same control variable of the two plunger drives 25, 30, substantially equal forces of the plungers 17 and 18 in the working direction A result.
  • the two plunger drives 25, 30 are controlled by a control unit 33.
  • the control unit 33 can independently set and specify the movement and / or position and / or force of each plunger 17, 18. In this way, the first plunger 17 and / or the second plunger 18, for example, position-controlled or position-controlled or force-controlled or force-controlled.
  • the corresponding control of the plunger drive 25, 30 and the respective electric motor 26, 31 is carried out by the control unit 33rd
  • a coupling means 35 will be switched between a coupling state and a decoupling state.
  • the decoupling state the two plungers 17, 18 can move completely independently of one another in the working direction A.
  • the coupling means 35 prevents a Relative movement between the two plungers 17, 18 in the working direction A. In the latter case, the two plungers 17, 18 move exclusively together.
  • the coupling means 35 produces a mechanical and / or kinematic coupling between the two tappets 17, 18.
  • the two plunger drives 25, 30 are kinematically coupled.
  • the two eccentric shafts 27, 32 of the two plunger drives 25, 30 rotatably connected by a shaft coupling 36 in the coupling state with each other.
  • the shaft coupling 36 is designed switchable and separates the two eccentric shafts 27, 32 in the decoupling state from each other.
  • the shaft coupling 36 can be switched by the control unit 33.
  • the shaft coupling 36 or another coupling means 35 to be made mechanically switchable by an operator, so that a manual switching between the coupling state and the decoupling state takes place.
  • FIG. 4 an alternative embodiment of the coupling means 35 is shown.
  • a mechanical connection is made by the coupling means 35 directly between the first plunger 17 and the second plunger 18, when this is in the coupling state.
  • the coupling means 35 releases the relative movement between the two plungers 17, 18.
  • the mechanical connection in the coupling state can be achieved for example by a frictional and / or positive connection between the two plungers 17, 18, for example by latching means and / or clamping means.
  • the coupling means 35 can also at this embodiment as shown schematically in FIG. 4 represented by the control unit 33 can be switched over or, alternatively, manually switched over.
  • the drawing press 10 can be operated depending on the state of the coupling means 35 either as a double-acting press or as a single-acting press.
  • the lower tool 21 has a pulling device 40 (FIG. FIG. 2 ).
  • the drawing device 40 has, for example, a table cushion 41 with a floating plate 42, which can be positioned and / or moved in the working direction A of the drawing press 10 via a table cushion drive 43.
  • On the floating plate 42 a plurality of push rods 46 are arranged, which pass through a press table 44 and at its the upper tool part 19 and the plungers 17, 18 facing the end of an annular plate holder 45 have.
  • the press table 44 below the plate holder 45 the lower tool part 20 is arranged.
  • the upper tool part 19 and the lower tool part 20 are complementary to each other. It is both possible to design the lower tool part 20 or the upper tool part 19 as a mold with a concave recess, as shown by way of example in FIGS FIGS. 1 and 2 is shown.
  • the control unit controls the second ram drive 30 independently of the first ram output 25 so that it only reaches the board 22 when the first ram 18 acts on the board 22 with the desired clamping force.
  • the control or regulation of the position and / or the speed of the first plunger 17 in the working direction A the actual drawing process of the board 22 is performed.
  • the upper tool part 19 and the lower tool part 20 work together and bring the board 22 in the desired shape.
  • the clamping force that the second plunger 18 exerts on the board 22 may vary.
  • the clamping force can be adjusted according to the position and / or the speed of the first plunger 17. Because of the independence of the two plunger drives 25, 30 and because the plunger drives 25, 30 are designed as electrical drives, a corresponding control by the control unit 33 is very simple and accurate.
  • the drawing press 10 can also be operated as a single-acting press, as in FIG. 2 is shown.
  • the drawing tool 40 is additionally attached to the lower tool 21.
  • the sheet holding ring 45 and the push rods 46 are connected to the floating plate 42.
  • the push rods 46 and the sheet holder ring 45 can be easily removed.
  • the operating state as a single-acting press is further adjusted by the coupling means 35 is switched to its coupling state.
  • the two plungers 17, 18 are coupled for movement. They form on their side facing the lower tool 21 side a common clamping surface 50.
  • the moments of the two electric motors 26, 31 of the two plunger drives 25, 30 can be added in this state, so that the force with which the two plungers 17, 18 together against the board 22 can be moved may be greater than the force that can be applied by the first or second ram drive 25, 30 alone.
  • forming processes with the drawing press 10 are feasible, requiring a large force of the plunger 17, 18 in the working direction A and can not be produced in the operating state as a double-acting press. Due to the coupling of the two plungers 17, 18, these move simultaneously in the working direction A and at the same time hit the board 22, which rests on the plate holder 45.
  • the two plungers 17, 18 move the board 22 together with the blank holder 45, the push rods 46 and the floating plate 42 in the working direction A, wherein the upper tool part 19 and the lower tool part 20 cooperate and a transformation of the board 22 takes place.
  • the two plunger drives 25, 30 are designed as upper drives. According to the embodiment according to FIG. 1 and 2 are the plunger drives 25, 30 formed by eccentric drives. In a modification of the illustrated embodiment, each plunger drive 25, 30 also more than one Electric motor 26, 31 have.
  • a joint drive 51 has two levers 52 connected to one another in an articulated manner, the one lever 52 being connected to the associated plunger 17 or 18 and the other lever 52 being connected in an articulated manner to the press position 11. At the articulated connection between the two levers 52 sits a drive lever 53 which is driven by an eccentric 54.
  • the invention relates to a drawing press 10 with a first plunger 17 and a second plunger 18.
  • the first plunger 17 is moved by an electromotive first plunger drive 25 and the second plunger 18 by an electromotive second plunger drive in a working direction A.
  • the drawing press 10 further includes a coupling means 35 which is switchable between a decoupling state and a coupling state. In the decoupling state, the two plungers 17, 18 can move independently of one another in the working direction A. In the coupling state, the coupling means 35 ensures that a relative movement between the two plungers 17, 18 is prevented.
  • the drawing press 10 can therefore be operated as a single or double-acting press.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Control Of Presses (AREA)
  • Presses And Accessory Devices Thereof (AREA)

Claims (14)

  1. Presse d'emboutissage (10),
    comprenant un premier coulisseau (17) qui est monté dans un bâti de presse (11) en pouvant être déplacé par un premier système d'entraînement de coulisseau (25) dans un sens de travail (A),
    comprenant un deuxième coulisseau (18) qui est monté dans un bâti de presse (11) en pouvant être déplacé par un deuxième système d'entraînement de coulisseau (30) dans un sens de travail (A),
    caractérisée en ce que les deux systèmes d'entraînement de coulisseau (25, 20) présentent chacun un moteur électrique (26, 31) et peuvent être entraînés indépendamment l'un de l'autre,
    en ce qu'une unité de commande (33) est prévue pour activer les deux systèmes d'entraînement de coulisseau (25, 20),
    et en ce qu'il est prévu un moyen d'accouplement (35) qui peut être commuté entre un état de désaccouplement, autorisant des mouvements indépendants des coulisseaux, et un état d'accouplement empêchant un mouvement relatif des deux coulisseaux (17, 18).
  2. Presse d'emboutissage selon la revendication 1,
    caractérisée en ce que les deux systèmes d'entraînement de coulisseau () sont identiques du point de vue cinématique.
  3. Presse d'emboutissage selon la revendication 1,
    caractérisée en ce que les deux systèmes d'entraînement de coulisseau (25, 30) sont réalisés en tant que systèmes d'entraînement excentriques (28, 29) ou en tant que systèmes d'entraînement articulés (51).
  4. Presse d'emboutissage selon la revendication 1,
    caractérisée en ce que, à l'état d'accouplement, les coulisseaux (17, 18) se déplacent ensemble dans le sens de travail (A) et coopèrent avec un dispositif d'emboutissage (41).
  5. Presse d'emboutissage selon la revendication 1,
    caractérisée en ce que, à l'état d'accouplement, le moyen d'accouplement (35) établit une liaison mécanique directement entre le premier coulisseau (17) et le deuxième coulisseau (18).
  6. Presse d'emboutissage selon la revendication 1,
    caractérisée en ce que, à l'état d'accouplement, le moyen d'accouplement (35) établit une liaison cinématique entre le premier système d'entraînement de coulisseau (25) et le deuxième système d'entraînement de coulisseau (30).
  7. Presse d'emboutissage selon la revendication 1,
    caractérisée en ce que, à l'état d'accouplement, une force d'entraînement, engendrée par un système d'entraînement de coulisseau (25, 20), agit sur les deux coulisseaux (17, 18).
  8. Presse d'emboutissage selon la revendication 1,
    caractérisée en ce que, à l'état d'accouplement, en fonction de la force de presse nécessaire, un seul des systèmes d'entraînement de coulisseau (25, 30) est actionné ou les deux sont actionnés.
  9. Presse d'emboutissage selon la revendication 1,
    caractérisée en ce que, à l'état d'accouplement, les deux coulisseaux (17, 18) forment une surface de montage (50) commune.
  10. Presse d'emboutissage selon la revendication 1,
    caractérisée en ce que le deuxième coulisseau (18) entoure le premier coulisseau (17) de façon annulaire.
  11. Presse d'emboutissage selon la revendication 1,
    caractérisée en ce que les deux systèmes d'entraînement de coulisseau (25, 30) sont réalisés comme systèmes d'entraînement hauts.
  12. Presse d'emboutissage selon la revendication 1,
    caractérisée en ce que, à l'état de désaccouplement, le deuxième coulisseau (18) sert de dispositif de retenue.
  13. Presse d'emboutissage selon la revendication 1,
    caractérisée en ce que l'unité de commande (33) est conçue pour activer le deuxième système d'entraînement de coulisseau (30), soit pour la commande de position, soit pour la commande de force du deuxième coulisseau (17).
  14. Presse d'emboutissage selon la revendication 13,
    caractérisée en ce que l'unité de commande (33) est conçue pour activer le deuxième système d'entraînement de coulisseau (30) en fonction de la vitesse et/ou de la position du premier coulisseau (17).
EP12710484.2A 2011-03-16 2012-03-16 Presse d'emboutissage dotée de deux coulisseaux accouplables Not-in-force EP2686161B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011001314.8A DE102011001314C5 (de) 2011-03-16 2011-03-16 Ziehpresse mit zwei koppelbaren Stößeln
PCT/EP2012/054716 WO2012123583A1 (fr) 2011-03-16 2012-03-16 Presse d'emboutissage dotée de deux coulisseaux accouplables

Publications (2)

Publication Number Publication Date
EP2686161A1 EP2686161A1 (fr) 2014-01-22
EP2686161B1 true EP2686161B1 (fr) 2015-03-04

Family

ID=45878933

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12710484.2A Not-in-force EP2686161B1 (fr) 2011-03-16 2012-03-16 Presse d'emboutissage dotée de deux coulisseaux accouplables

Country Status (9)

Country Link
US (1) US9216448B2 (fr)
EP (1) EP2686161B1 (fr)
CN (1) CN103459133B (fr)
BR (1) BR112013022922A2 (fr)
CA (1) CA2829834C (fr)
DE (1) DE102011001314C5 (fr)
ES (1) ES2534216T3 (fr)
MX (1) MX2013010568A (fr)
WO (1) WO2012123583A1 (fr)

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DE102012005635B3 (de) 2012-03-22 2013-06-27 Allgaier Werke Gmbh Vorrichtung, Anlage und Verfahren zum Umformen einer Blechplatine sowie ein hiermit hergestelltes Werkstück
DE102013219819A1 (de) * 2013-09-30 2015-04-02 Allgaier Werke Gmbh Vorrichtung zum Umformen eines Werkstückes aus Blech
US9931684B2 (en) 2014-04-18 2018-04-03 Honda Motor Co., Ltd. Forming die and method of using the same
US10105742B2 (en) 2014-12-09 2018-10-23 Honda Motor Co., Ltd. Draw press die assembly and method of using the same
DE102015110748A1 (de) 2015-07-03 2017-01-05 Schuler Pressen Gmbh Verfahren zur Einstellung eines Phasenversatzes einer mehrfach wirkenden mechanischen Querwellenpresse sowie eine Presse nach diesem Verfahren
EP3536493A1 (fr) * 2018-03-05 2019-09-11 Arcofil S.A. Presse électrique à moteur torque
DE102018116119A1 (de) * 2018-07-04 2020-01-09 Schuler Pressen Gmbh Presse, Pressenwerkzeugteil und Verfahren zu dessen Herstellung
CN110125224B (zh) * 2019-06-24 2020-10-13 广东虹瑞智能设备股份有限公司 一种多级冲压机床

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Also Published As

Publication number Publication date
DE102011001314A1 (de) 2012-09-20
DE102011001314C5 (de) 2016-03-03
US20140047892A1 (en) 2014-02-20
CA2829834A1 (fr) 2012-09-20
CN103459133A (zh) 2013-12-18
ES2534216T3 (es) 2015-04-20
CN103459133B (zh) 2015-08-19
CA2829834C (fr) 2016-09-13
BR112013022922A2 (pt) 2016-12-06
EP2686161A1 (fr) 2014-01-22
MX2013010568A (es) 2013-12-02
DE102011001314B4 (de) 2014-01-23
WO2012123583A1 (fr) 2012-09-20
US9216448B2 (en) 2015-12-22

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