EP2062987A1 - Presse de moulage à chaud - Google Patents

Presse de moulage à chaud Download PDF

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Publication number
EP2062987A1
EP2062987A1 EP08018035A EP08018035A EP2062987A1 EP 2062987 A1 EP2062987 A1 EP 2062987A1 EP 08018035 A EP08018035 A EP 08018035A EP 08018035 A EP08018035 A EP 08018035A EP 2062987 A1 EP2062987 A1 EP 2062987A1
Authority
EP
European Patent Office
Prior art keywords
jaw
cooling
shaping
forming
thermoforming press
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP08018035A
Other languages
German (de)
English (en)
Other versions
EP2062987B1 (fr
Inventor
Kiyohito Kondo
Martin Pohl
Robert Stockter
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
Aisin Takaoka Co Ltd
Original Assignee
Benteler Automobiltechnik GmbH
Aisin Takaoka Co Ltd
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, Aisin Takaoka Co Ltd filed Critical Benteler Automobiltechnik GmbH
Publication of EP2062987A1 publication Critical patent/EP2062987A1/fr
Application granted granted Critical
Publication of EP2062987B1 publication Critical patent/EP2062987B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B21D22/02—Stamping using rigid devices or tools
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/673—Quenching devices for die quenching
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • C21D9/48—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals deep-drawing sheets

Definitions

  • the invention relates to a thermoforming press according to the features in the preamble of claim 1.
  • DE 24 52 486 C2 includes a method for producing a hardened sheet metal profile from a steel sheet in a prior art press hardening process.
  • a board made of a hardenable steel is heated to hardening temperature, then hot formed in a press tool and then cured, while the sheet metal profile remains in the press tool.
  • the steel sheet is pressed in less than 5 seconds in the final mold between two indirectly cooled tools under substantial change in shape and subjected to rapid cooling in the press so that a martensitic and / or bainitic fine-grained structure is achieved. Since the sheet metal profile is clamped in the press tool during cooling in the course of the curing process, a product with good dimensional stability is obtained.
  • the indirect cooling takes place via cooling channels, which are introduced in the form of holes or slots (shaft cooling) at a defined distance from the forming surface in the tool.
  • a cooling medium often water
  • the cooling channels are usually drilled in the tool.
  • the preparation of such holes is manufacturing technically complex and costly.
  • the holes can often follow the three-dimensional structure of the tool surface only partially. As a result, the distance between the tool surface and the coolant channels is relatively large, whereby the cooling effect decreases.
  • thermoforming press with an upper tool and a lower tool.
  • Both the upper tool and the lower tool consists of a base plate with a fixed therein jaw and also defined on the base plate, acting as a jaw core. Between the support jaw and the back of the jaw facing the jaw, a channel system for the passage of a coolant is formed.
  • a direct cooling in a thermoforming press is from the DE 26 03 618 A1 known.
  • concentric annular grooves are introduced, lead into the channels passed through the tools. Through these channels, a cooling liquid is fed into the annular grooves for direct contact with a sheet metal profile to be hardened.
  • a spray or dip cooling causes a strong contamination of the tools with coolant. This can cause corrosion and mechanical problems. The cooling performance leaves something to be desired.
  • the invention is based on the prior art based on the object to provide a plant and application technology improved thermoforming press for forming and hardening of metal sheets, with improved cooling effect and reduced process time.
  • thermoforming press according to the features of claim 1.
  • the upper tool and / or the lower tool of the thermoforming press is constructed in two parts and includes a mold jaw and a support jaw.
  • the mold jaw and the jaw are displaceable relative to each other, wherein the support jaw rests in a blocking position on the mold jaw and is spaced in a cooling position of the mold jaw, so that between the mold jaw and the support jaw, a cooling gap is formed through which a coolant is conductive.
  • thermoforming press in which the distance between the coolant guide and the tool surface or the forming surface in the mold block can be minimized.
  • the cooling can be ensured continuously during the forming process. Consequently, there is a minimum residence time of the pressed parts in the hot-forming press and thus a maximized economy.
  • thermoforming press is then closed and the metal sheet formed between the upper tool and lower tool to the sheet metal profile.
  • the clamping force of the thermoforming press is only needed to maintain the contact between the produced sheet metal profile and the upper tool and the lower tool for the purpose of heat transfer during cooling or hardening process.
  • the cooling gap between the forming jaw and the jaw is opened again. Coolant flows through the cooling gap over the entire surface and at a short distance from the warm component. As a result, optimal cooling can be achieved. Until the resealing of the thermoforming press, the cooling gap is maintained.
  • the support jaw in the blocking position is positively against the forming jaw.
  • the contacting surfaces of the jaw and form jaw are matched in their contour and correspond to each other.
  • the cooling gap extends on the rear side of the shaping jaw facing the support jaw over the surface of the shape geometry of the shaping jaw.
  • linear drives For the displacement of the mold jaw and the jaw relative to each other linear drives are used.
  • various embodiments of linear drives are possible.
  • linear drives in the form of piston-cylinder units offer, in particular, this is intended to the use of hydraulic cylinders.
  • At least one seal is integrated between them. This is located in the opposite guide surfaces of the mold jaw and / or the jaw.
  • the seal is expediently provided in a groove in the support jaw above or below the coolant connection.
  • the shaping jaw preferably consists of a thin steel shell with a shape geometry designed in accordance with the component to be produced.
  • the support jaw is shaped.
  • the mold jaw has a wall thickness of 4 mm to 15 mm, preferably from 5 mm to 10 mm. Due to the comparatively thin wall thickness of the mold jaw, a good heat exchange between the coolant and the hot-formed component is possible.
  • thermoforming press 1 Based on Figures 1 - 4 a hot forming press 1 according to the invention is described.
  • the illustrations each show schematically a vertical cross section through the thermoforming press 1 in different working positions.
  • the thermoforming press 1 essentially comprises an upper tool 2 and a lower tool 3.
  • the lower tool 3 is arranged on a press base 4.
  • the upper tool 2 is fixed to a press carriage 5, which is vertically displaceable in the thermoforming press 1 relative to the press base 4 and the lower tool 3.
  • Both the upper tool 2 and the lower tool 3 each have a forming jaw 6 and 7 and a support jaw 8 and 9, which are displaceable relative to each other.
  • 9 linear drives 10 in the form of piston-cylinder units, in particular of hydraulic cylinders are connected between the mold jaw 6, 7 and the support jaw 8.
  • a block position B as in the Figures 2 and 3 can be seen, the support jaws 8, 9 are positively against each of the support jaw 8, 9 facing back 11, 12 of the mold jaws 6, 7 at.
  • block position B form the support jaw 8 and 9 and the mold jaw 6 and 7 so a massive unit.
  • a cooling gap 13 or 14 is formed between the shaping jaw 6, 7 and the support jaw 8, 9.
  • a coolant KM can be passed.
  • the mold jaws 6, 7 each have a shape geometry 15, 16, which correspond to one another and is matched to the contour of a sheet metal profile to be formed.
  • the shape geometry 16 of the forming jaw 7 of the lower die 3 forms a dome-like male part protruding from the base surface 17 of the forming jaw 7, which forms a receiving geometry (die) forming the same shape in the diametrically opposed, in relation to the base surface 18 of the shaping jaw 6 immersed during the forming process.
  • a shaping jaw 6 or 7 consists of a thin steel shell with a shape geometry 15, 16 formed in accordance with the component to be produced.
  • the wall thickness s of the shaping jaw 6, 7 in the area of the shape geometry 15, 16 is consistently strong and preferably has a wall thickness s of 5 mm to 10 mm.
  • the mold jaws 6, 7 and the support jaws 8, 9 are sealed against each other via a respective seal 23.
  • the seal 23 is integrated in a groove 24 in the mold jaw 6 and 7, respectively.
  • the groove 24 is located above or below the coolant connections 19, 20.
  • thermoforming press 1 Before the forming process of a metal sheet 25, the thermoforming press 1 is open and the upper tool 2 as well as the lower tool 3 are in the cooling position K.
  • the cooling gap 13, 14 is open, so that a massive flow of coolant KM through the cooling gap 13, 14 allows is.
  • the cooling gap 13, 14 extends on the back of the jaw 8, 9 facing back 11, 12 of the mold jaw 6, 7 over the surface of the mold geometry 15, 16 of the mold jaw 6, 7 and that at a short distance a, which the wall thickness s of the mold jaw 6, 7 in the area of the shape geometry 15, 16 corresponds to ( FIG. 1 ).
  • the cooling gap 13, 14 is closed and the mold jaws 6, 7 and the support jaws 8, 9 brought from upper tool 2 and lower tool 3 in the blocking position B ( FIG. 2 ).
  • thermoforming press 1 then heated to hardening temperature metal sheet 25 is inserted. Subsequently, the thermoforming press 1 is closed and the metal sheet 25 is formed into the sheet metal profile 26, as based on the FIG. 3 to recognize.
  • the press carriage 5 is moved together with the upper tool 2 down. In this case, the metal sheet 25 is pulled into the shape geometry 15, 16 and formed into the sheet profile 26.
  • thermoforming press 1 After complete closing of the thermoforming press 1, the actual forming process of the metal sheet 25 is completed.
  • the clamping force of the thermoforming press 1 is only needed to maintain the contact between the sheet metal profile 26 and the upper tool 2 and the lower tool 3.
  • the cooling gaps 13, 14 are opened again ( FIG. 4 ).
  • the mold jaws 6, 7 and the support jaws 8, 9 are again in the cooling position K and coolant KM flows over the entire surface and at a short distance a to the hot-formed sheet metal profile 26 through the cooling gaps 13, 14. Due to the small distance a between the hot sheet metal profile 26th and the coolant KM and the full-surface coolant entry is a very good heat dissipation from the sheet metal profile 26 and thus achieves an efficient cooling or hardening process.
  • thermoforming press 1 After completion of the curing process, the thermoforming press 1 is opened again. This is done with the cooling gap 13, 14 open so that the mold jaws 6, 7 are further cooled. The finished shaped and hardened sheet metal profile 26 can be removed from the thermoforming press 1 and begin the forming process anew.
EP08018035A 2007-11-21 2008-10-15 Presse de moulage à chaud Expired - Fee Related EP2062987B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007056186A DE102007056186B3 (de) 2007-11-21 2007-11-21 Warmformpresse

Publications (2)

Publication Number Publication Date
EP2062987A1 true EP2062987A1 (fr) 2009-05-27
EP2062987B1 EP2062987B1 (fr) 2010-01-06

Family

ID=40092814

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08018035A Expired - Fee Related EP2062987B1 (fr) 2007-11-21 2008-10-15 Presse de moulage à chaud

Country Status (4)

Country Link
US (1) US8001821B2 (fr)
EP (1) EP2062987B1 (fr)
JP (1) JP4819858B2 (fr)
DE (1) DE102007056186B3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102380534A (zh) * 2010-09-02 2012-03-21 丰田纺织株式会社 成形体的制造方法

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010004081C5 (de) 2010-01-06 2016-11-03 Benteler Automobiltechnik Gmbh Verfahren zum Warmformen und Härten einer Platine
KR101216518B1 (ko) * 2010-01-08 2012-12-31 주식회사 신영 냉각시스템이 구비된 열간 프레스 성형용 금형
US8671729B2 (en) * 2010-03-02 2014-03-18 GM Global Technology Operations LLC Fluid-assisted non-isothermal stamping of a sheet blank
DE102010035339B4 (de) * 2010-08-24 2012-05-24 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung von Formbauteilen aus einer Platine aus gehärtetem warm umformbaren Stahlblech
ES2565391T3 (es) 2011-05-23 2016-04-04 Nippon Steel & Sumitomo Metal Corporation Método de moldeo por prensado en caliente y matriz de moldeo por prensado en caliente
EP2583766B1 (fr) * 2011-10-21 2019-04-17 EDAG Werkzeug + Karosserie GmbH Formage avec refroidissement
DE102012210958A1 (de) * 2012-06-27 2014-04-03 Bayerische Motoren Werke Aktiengesellschaft Gekühltes Werkzeug zum Warmumformen und/oder Presshärten eines Blechmaterials sowie Verfahren zur Herstellung einer Kühleinrichtung für dieses Werkzeug
CN104120227A (zh) * 2013-01-11 2014-10-29 滁州亚利模具设备有限公司 一种模具
CN103184330B (zh) * 2013-01-11 2014-08-06 滁州亚利模具设备有限公司 一种模具
JP6381967B2 (ja) * 2014-05-22 2018-08-29 住友重機械工業株式会社 成形装置及び成形方法
JP2016140893A (ja) * 2015-02-03 2016-08-08 豊田鉄工株式会社 熱間プレス成形装置及び熱間プレス成形方法
US9943901B2 (en) * 2015-08-31 2018-04-17 Ford Global Technologies, Llc Adjustable stamping die
KR102347724B1 (ko) * 2021-03-08 2022-01-07 대우공업 (주) 탄소섬유 강화수지와 금속판재의 동시성형을 위한 온간성형 프레스 금형 장치의 냉각구조
KR102309443B1 (ko) * 2021-03-08 2021-10-05 대우공업 (주) 금형 내 에어벤트홀을 통한 냉각풍을 직분사하는 온간성형 프레스 금형 장치의 급속 냉각구조

Citations (7)

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DE2603618A1 (de) 1975-06-05 1976-12-23 Kenebuc Galt Ltd Verfahren und vorrichtung zur waermebehandlung von stahl
DE2452486C2 (de) 1973-11-06 1985-10-17 Plannja AB, Luleå Verfahren zum Preßformen und Härten eines Stahlblechs mit geringer Materialdicke und guter Maßhaltigkeit
JP2005007442A (ja) * 2003-06-19 2005-01-13 Yoshihiro Kato プレス装置
DE102004045155A1 (de) 2004-09-17 2006-03-30 Benteler Maschinenbau Gmbh Warmformwerkzeug
DE102005028010B3 (de) 2005-06-16 2006-07-20 Benteler Automobiltechnik Gmbh Verfahren und Presse zum Warmformen
EP1749593A2 (fr) * 2005-08-05 2007-02-07 Agrupacion de Conformado y Ensamble, S. Coop. Matrice avec circuit de refroidissement
JP2007190563A (ja) * 2006-01-17 2007-08-02 Atsuta Seiki Kk 金型

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US3733161A (en) * 1968-08-14 1973-05-15 Bischoff Chemical Corp Structurizer mold
US4166521A (en) * 1976-02-17 1979-09-04 Honda Giken Kogyo Kabushiki Kaisha Stainless steel brake disc structure
JPH04307207A (ja) * 1991-04-04 1992-10-29 Mitsubishi Heavy Ind Ltd 金型
JP2004136306A (ja) * 2002-10-16 2004-05-13 Matsushita Electric Ind Co Ltd マグネシウム合金部品の温間プレス成形方法とその成形装置
DE102005042765C5 (de) * 2005-09-08 2013-01-03 Voestalpine Automotive Gmbh Formwerkzeug
JP4608420B2 (ja) * 2005-11-22 2011-01-12 新日本製鐵株式会社 トランスファープレス装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2452486C2 (de) 1973-11-06 1985-10-17 Plannja AB, Luleå Verfahren zum Preßformen und Härten eines Stahlblechs mit geringer Materialdicke und guter Maßhaltigkeit
DE2603618A1 (de) 1975-06-05 1976-12-23 Kenebuc Galt Ltd Verfahren und vorrichtung zur waermebehandlung von stahl
JP2005007442A (ja) * 2003-06-19 2005-01-13 Yoshihiro Kato プレス装置
DE102004045155A1 (de) 2004-09-17 2006-03-30 Benteler Maschinenbau Gmbh Warmformwerkzeug
DE102005028010B3 (de) 2005-06-16 2006-07-20 Benteler Automobiltechnik Gmbh Verfahren und Presse zum Warmformen
EP1749593A2 (fr) * 2005-08-05 2007-02-07 Agrupacion de Conformado y Ensamble, S. Coop. Matrice avec circuit de refroidissement
JP2007190563A (ja) * 2006-01-17 2007-08-02 Atsuta Seiki Kk 金型

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102380534A (zh) * 2010-09-02 2012-03-21 丰田纺织株式会社 成形体的制造方法
CN102380534B (zh) * 2010-09-02 2014-10-29 丰田纺织株式会社 成形体的制造方法

Also Published As

Publication number Publication date
DE102007056186B3 (de) 2009-01-08
EP2062987B1 (fr) 2010-01-06
JP2009125808A (ja) 2009-06-11
US20090126447A1 (en) 2009-05-21
JP4819858B2 (ja) 2011-11-24
US8001821B2 (en) 2011-08-23

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