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EP3002118A1 - Moule de formage doté de coussin de compensation et procédé de fonctionnement du moule de formage - Google Patents

Moule de formage doté de coussin de compensation et procédé de fonctionnement du moule de formage Download PDF

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Publication number
EP3002118A1
EP3002118A1 EP15171843.4A EP15171843A EP3002118A1 EP 3002118 A1 EP3002118 A1 EP 3002118A1 EP 15171843 A EP15171843 A EP 15171843A EP 3002118 A1 EP3002118 A1 EP 3002118A1
Authority
EP
European Patent Office
Prior art keywords
tool
press
compensation
upper tool
lower tool
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Withdrawn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
EP15171843.4A
Other languages
German (de)
English (en)
Inventor
Miroslav Base
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.)
Benteler Automobiltechnik GmbH
Original Assignee
Benteler Automobiltechnik 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
Application filed by Benteler Automobiltechnik GmbH filed Critical Benteler Automobiltechnik GmbH
Publication of EP3002118A1 publication Critical patent/EP3002118A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B30B15/061—Cushion plates
    • 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
    • B21D22/208—Deep-drawing by heating the blank or deep-drawing associated with heat treatment
    • 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
    • B21D24/005—Multi-stage presses
    • 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
    • B21D24/02—Die-cushions
    • 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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/16—Heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/007—Means for maintaining the press table, the press platen or the press ram against tilting or deflection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B30B15/062—Press plates
    • B30B15/064—Press plates with heating or cooling means

Definitions

  • the present invention relates to a press forming tool according to the features in the preamble of claim 1.
  • the present invention further relates to a method for operating a press forming tool according to the features in claim 9.
  • a press forming tool which has an upper tool and a lower tool, which are movable towards each other, wherein with closed Pressumformwerkzeug between the upper tool and lower tool, a mold cavity is formed. Between the lower tool and a counter-plate is provided a pressure equalization space, so that the lower tool is mounted floating. In the pressure equalization chamber, a hydraulic medium is received.
  • the object of the present invention is therefore to show a press forming tool in which a compensation possibility of upper tool and / or lower tool is provided so that production tolerances occurring during press forming are reduced, in particular with multiple falling tools.
  • the present invention relates to a press forming tool comprising an upper tool and a lower tool, wherein upper tool and lower tool are movable towards each other.
  • a mold cavity remains between the upper tool and the lower tool.
  • the mold cavity corresponds with its inner contour of the outer contour of the component to be produced, so that a deformed board in the mold cavity on the upper tool and also on the lower tool is substantially full surface to the plant.
  • the present invention provides that between the upper tool and a press ram and / or between the lower tool and a press table, a hydraulic compensation pad is arranged the upper tool and / or the lower tool are floatingly mounted via the hydraulic compensation pad.
  • the press forming tool according to the invention is designed as a hot forming and press hardening tool. It is thus possible that a homogeneous cooling of the board takes place due to the complete system contact. This makes it possible in particular to set the microstructural properties of the material targeted and homogeneous.
  • a further significant advantage when carrying out the press hardening process is that, due to the full surface contact with the system, a shortening of the quenching time is made possible, since the better heat transfer is reliable due to the complete contact with the system.
  • the cycle time of an inventively equipped Pressumformwerkmaschinemaschinees can thus be reduced, while ensuring that a complete press hardening has taken place.
  • the upper tool is mounted floatingly with respect to the press ram while incorporating the compensating pad and / or the lower tool is mounted floatingly with respect to the press table while incorporating the compensating pad.
  • This makes it possible within the scope of the invention that due to the floating bearing tilting of upper tool to lower tool and thus a non-full-surface concerns of the formed to the component board in the mold cavity is avoided.
  • a multiply falling tool thus arranged side by side upper tools and / or lower tools, the respective corresponding upper tools and lower tools when closing the tool and / or fully closed tool to each other.
  • the floating bearing Due to the floating bearing thus in particular a relative movement of the upper tool and / or lower tool of a few tenths of a millimeter to a few millimeters is possible.
  • the applied pressing force is homogenized when the tool is completely closed.
  • a possible deflection of the press table and / or press ram is compensated by the floating bearing, such that upper tool and lower tool are optimally aligned in their relative position to each other and the applied pressing force is particularly homogeneously introduced to the upper tool and / or the lower tool by the floating storage.
  • the compensation pad is thus located respectively on the back of the upper tool and / or lower tool and is preferably coupled in the case of the upper tool of a clamping plate on the press ram and in the case of the lower tool with a clamping plate arranged on the press table.
  • the press ram has in particular a flat design Press plate on which is connected to the same push-rigid, then according to the hydraulic compensation pad is coupled to the press plate.
  • press ram this is abbreviated as press ram.
  • the hydraulic compensation pad itself is in the context of the invention, in particular formed by a single-layer compensating cushion cover and has a flexible surface or flexible wall.
  • the compensation cushion cover can also be designed in several layers.
  • the compensation cushion itself is formed from a thin-walled sheet metal material.
  • a fiber-reinforced material in the context of the invention may also be used a fiber-reinforced material, so that this, in particular by the press forming self-applied pressure force withstands.
  • the compensation pad is then provided on a rear side with one side, which faces the upper tool or the lower tool, with a base plate or sealing plate, in particular, the base plate forms the back of the compensation pad.
  • the base sheet is then preferably attached to a clamping table and in turn is fluid-tightly coupled to the leveling pad, so that a fluid-tight space between the leveling pad and the base sheet is provided in the leveling pad.
  • a circumferential frame or a circumferential strip is further provided which couples the compensation cushion cover and the base plate at a predetermined distance from each other, wherein the distance corresponds in particular in its height to the Aufsetzangn described below.
  • the compensation pad can then have the same dimensions in width and depth of the press table itself in the case of a press table.
  • the compensation pad can also be formed only partially on the press table, in particular in the arrangement of several sub-tools on a press table, so that the compensation pad then preferably has the width and depth of a bottom of the lower tool.
  • Each lower tool can then be attached to the press table with the inclusion of an individual compensation pad.
  • a clamping plate is further provided on the press table, on which the compensation pad, in particular the base plate of the compensation pad is attached.
  • the upper tool and / or the lower tool are captively connected to the press ram or press table, in particular a positive storage, which allows a relative play to provide.
  • this is formed by sliding blocks, most preferably by T-shaped nuts on a clamping plate.
  • the T-shape of the sliding block is characterized in particular such that a neck and a transverse to the neck T-shaped web are formed. Over the length of the neck can then take place a relative movement of upper tool to press ram. By the T-shaped web and by a bearing surface of the press ram or the clamping plate this relative movement is delimited. The same applies in reverse order then for the press table.
  • the sliding blocks can be positioned such that a relative movement of the upper tool can be carried out transversely to the press ram and, in the case of the lower tool, transversely to the press table.
  • an elastic bearing in particular an elastic stop or damper, be provided between the upper tool and the sliding block.
  • an elastic stop in particular an elastic stop or damper
  • a Teflon material or even a rubber-like plastic material can be used.
  • the elastic stop also made of a relatively soft metallic material in relation to the tool steels used for the tools and / or press ram and / or press table.
  • the press forming tool according to the invention can be operated in two different ways.
  • a first method provides that the floating storage is operated passively. This means in the compensation cushion prevails a consistent increasingly prevalent Hydraulic pressure.
  • the compensation pad is thus filled with a hydraulic medium, in which case the relative movement from upper tool to press ram or from lower tool to press table lead to a displacement of the compensation pad.
  • the prevailing hydraulic pressure within the compensation pad is therefore constant and is only increased by the press force when the press forming tool is completely closed, or distributes it evenly.
  • An alternative embodiment variant provides that the hydraulic pressure in the compensation cushion is actively controlled.
  • the base pressure can be increased by an operating pressure.
  • the hydraulic pressure in the compensation pad is increased.
  • the base pressure can also be zero.
  • the pressure acting on the component is further increased by the operating pressure of the hydraulic medium. Due to the floating storage of upper tool to press ram and / or lower tool to press table this ensures in particular that any gaps and / or spaces between the tool surface and the surface of the formed blank are closed so that a nearly complete contact with the plant is achieved.
  • a particularly preferred embodiment provides that at the beginning of the forming stroke the pressure prevailing in the compensation pad is equal to zero.
  • the forming force is thus initially transferred exclusively via the press forming tool, wherein the upper tool and lower tool transmit the pressing force on the Aufsetzangn to the reshaped board.
  • the balance pad is filled with a predetermined defined volume of oil hydraulic fluid.
  • the press ram itself holds its holding power, but is easily raised by the hydraulic force applied to the balance pad.
  • a hydraulic pressure between 1 and 2 MPa, preferably between 1.3 and 1.7 MPa used.
  • a hydraulic cylinder is particularly preferably arranged on the press-forming tool, with which volume and pressure in the fluid to be introduced can be precisely controlled and optionally adapted when the tool is changed.
  • an oil is used as the hydraulic medium.
  • a plurality of adjacently mounted upper tools and / or lower tools can be arranged on a press ram or on a press table.
  • a respective upper tool and a respective lower tool are then aligned precisely to one another due to the floating bearing.
  • the press force is further provided in the invention, that are arranged on the press table and / or the press ram Aufsetzrucn.
  • the Aufsetzarchn provide with completely closed press mold by at least partially formed contact with the respective upper tool or lower tool for a complete transfer of the press force. If the upper tool or lower tool has a corresponding misalignment or misalignment to the press table and / or press ram, the press force is transmitted via the compensation pad and the prevailing hydraulic pressure therein.
  • FIG. 1 shows a press forming tool 1 according to the invention comprising a press ram 2 mounted above and a press table 3 mounted below.
  • a lower tool 4 is arranged on the press table 3.
  • the lower tool 4 itself has four lower tool parts 4.1, 4.2, 4.3, 4.4.
  • At the press ram 2 itself four upper tools 5.1, 5.2, 5.3, 5.4 are suspended.
  • the four upper tools 5.1, 5.2, 5.3, 5.4 are mounted floating on the press ram 2 by incorporating a hydraulic compensation pad 6 according to the invention.
  • each individual upper tool 5.1, 5.2, 5.3, 5.4 to perform a relative movement R both relative to the lower tool 4 and to the press ram 2, so that in each case an optimum mold cavity 7.1, 7.2, 7.3, 7.4 between the upper tool 5.1, 5.2, 5.3, 5.4 and lower tool 4 and the respective tool surfaces 8, 9 of upper tool 5.1, 5.2, 5.3, 5.4 and lower tool 4 sets.
  • a not shown in-between board incorporated thus has a nearly complete contact with the tool surfaces 8, 9, which leads in the case of a cooled Presshärtewerkmaschineschwmaschines to a shortened cooling time.
  • FIG. 2 shows a detailed view of two side-by-side upper tools 5.1, 5.2.
  • the upper tools 5.1, 5.2 are suspended relatively movable on a T-shaped sliding block 11, so that the upper tool 5.1, 5.2 on a support surface 12 of a T-shaped web, based on the vertical direction V in in FIG. 2 shown top dead center, rests.
  • the compensation pad 6 itself is formed on a plunger plate 13 of the press ram 2 fitting.
  • An elastic means is indicated on a side surface so that, on the one hand, guidance in the transverse direction Q takes place, but on the other hand a metal impact is, as it were, dampened by the elastic means. It is also conceivable within the scope of the invention between support surface 12 and upper tool 5.1, 5.2 incorporate an elastic means.
  • the two side by side suspended upper tools 5.1, 5.2 are guided to the lower tool 4 with a sliding guide.
  • a lateral movement of an upper tool 5 can take place only in the context of a sliding gap.
  • FIG. 3 shows the view in a bottom dead center. It can be seen that relative to the vertical direction V, the respective upper tool 5.1, 5.2 brought into abutting contact with the compensation pad 6 and by further lowering the plunger plate 13 and the press ram 2 not shown in accordance with a force F of the press is transmitted to the not shown in detail board.
  • a relative movement R of upper tool 5.1, 5.2 to plunger plate 13 of less than 10 mm, in particular less than 5 mm is particularly preferably carried out.
  • the respective upper tool 5.1, 5.2 is then again floating, so that it can be ideally aligned with fully closed Pressumformwerkmaschinegne 1 relative to the lower tool and the plant contact to be manufactured to the formed board. A homogenization of the contact pressure in the closed state is also achieved.
  • FIG. 4 shows a plan view of the in FIG. 2 and FIG. 3 indicated surface 15 of the plunger plate 13 of a press ram.
  • On the surface 15 of the base plate 23 is an outer circumferential frame 16, which fluid-tight coupling the compensation pad 6 with the surface 15 of the base plate 23.
  • the frame 16 itself has a connection opening or a valve opening in order to provide the in Fig. 2 shown hydraulic medium 19 between surface 15 and compensating cushion cover 18 to introduce and connect an active pressure regulator to actively adjust the voltage between the hydraulic cushion cover 18 and surface 15 of the hydraulic medium 19.
  • the compensation pad 6 in a cross-sectional view.
  • the compensation cushion 6 according to the invention with its compensation cushion cover 18 and the outside surrounding frame.
  • the height H16 of the frame 16 corresponds to the height H20 of the Aufsetzmann.
  • the frame 16 and the base plate 23 and the compensating cushion cover 18 are preferably coupled together by a thermal joining method.
  • all components are formed of a metallic material.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Presses And Accessory Devices Thereof (AREA)
EP15171843.4A 2014-08-27 2015-06-12 Moule de formage doté de coussin de compensation et procédé de fonctionnement du moule de formage Withdrawn EP3002118A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014112320.4A DE102014112320B4 (de) 2014-08-27 2014-08-27 Pressumformwerkzeug mit Ausgleichskissen

Publications (1)

Publication Number Publication Date
EP3002118A1 true EP3002118A1 (fr) 2016-04-06

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ID=53433047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15171843.4A Withdrawn EP3002118A1 (fr) 2014-08-27 2015-06-12 Moule de formage doté de coussin de compensation et procédé de fonctionnement du moule de formage

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Country Link
EP (1) EP3002118A1 (fr)
DE (1) DE102014112320B4 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109291416A (zh) * 2018-11-30 2019-02-01 佛山市高明粤华卫生洁具有限公司 一种板材吸塑成型机构
EP3507037A4 (fr) * 2016-09-01 2020-07-15 Concurrent Engineering Experts Conex AB Presse et procédé de mise en forme simultanée de plus d'un produit mince

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017118492A1 (de) * 2017-08-14 2019-02-14 Kirchhoff Automotive Deutschland Gmbh Pressenwerkzeug

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2204238A1 (de) 1972-01-29 1973-08-02 Siempelkamp Gmbh & Co Presse fuer die herstellung von gepressten platten
US4557792A (en) * 1983-04-15 1985-12-10 Hitachi, Ltd. Hot press
DE3429801A1 (de) * 1984-08-13 1986-04-10 Maschinenfabrik J. Dieffenbacher Gmbh & Co, 7519 Eppingen Druckausgleichspolster
DE8913152U1 (de) 1989-11-07 1989-12-28 Wagener Schwelm GmbH & Co, 58332 Schwelm Vorrichtung für die Reparatur und zum Endlosmachen von Fördergurten aus Gummi oder Kunststoff
DE19605782A1 (de) 1996-02-16 1997-08-21 Haas Eberhard Presse
DE19937694A1 (de) * 1999-08-10 2001-02-22 Siempelkamp Gmbh & Co Plattenpresse, insbesondere Einetagenpresse
EP1637315A1 (fr) * 2004-09-15 2006-03-22 Euroditan S.L. Presse pour la fabrication de carreaux en céramique
DE102006015793B3 (de) * 2006-04-05 2007-06-06 Amborn, Peter, Dr.-Ing. Umformwerkzeug zum Umformen von Hohlkörpern oder Blechen mit Hilfe eines druckbeaufschlagten Gases oder Fluides
US20100200172A1 (en) * 2008-11-25 2010-08-12 Rolf Espe Plate press
AT510739A1 (de) 2010-11-24 2012-06-15 Springer Holztechnik Gmbh Presse

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2204238A1 (de) 1972-01-29 1973-08-02 Siempelkamp Gmbh & Co Presse fuer die herstellung von gepressten platten
US4557792A (en) * 1983-04-15 1985-12-10 Hitachi, Ltd. Hot press
DE3429801A1 (de) * 1984-08-13 1986-04-10 Maschinenfabrik J. Dieffenbacher Gmbh & Co, 7519 Eppingen Druckausgleichspolster
DE8913152U1 (de) 1989-11-07 1989-12-28 Wagener Schwelm GmbH & Co, 58332 Schwelm Vorrichtung für die Reparatur und zum Endlosmachen von Fördergurten aus Gummi oder Kunststoff
DE19605782A1 (de) 1996-02-16 1997-08-21 Haas Eberhard Presse
DE19937694A1 (de) * 1999-08-10 2001-02-22 Siempelkamp Gmbh & Co Plattenpresse, insbesondere Einetagenpresse
EP1637315A1 (fr) * 2004-09-15 2006-03-22 Euroditan S.L. Presse pour la fabrication de carreaux en céramique
DE102006015793B3 (de) * 2006-04-05 2007-06-06 Amborn, Peter, Dr.-Ing. Umformwerkzeug zum Umformen von Hohlkörpern oder Blechen mit Hilfe eines druckbeaufschlagten Gases oder Fluides
US20100200172A1 (en) * 2008-11-25 2010-08-12 Rolf Espe Plate press
AT510739A1 (de) 2010-11-24 2012-06-15 Springer Holztechnik Gmbh Presse

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3507037A4 (fr) * 2016-09-01 2020-07-15 Concurrent Engineering Experts Conex AB Presse et procédé de mise en forme simultanée de plus d'un produit mince
CN109291416A (zh) * 2018-11-30 2019-02-01 佛山市高明粤华卫生洁具有限公司 一种板材吸塑成型机构

Also Published As

Publication number Publication date
DE102014112320A1 (de) 2016-03-03
DE102014112320B4 (de) 2016-12-15

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