Global Patent Index - EP 2371465 A1

EP 2371465 A1 20111005 - Method and device for producing hardened moulded components

Title (en)

Method and device for producing hardened moulded components

Title (de)

Verfahren und Vorrichtung zur Herstellung von gehärteten Formbauteilen

Title (fr)

Procédé et dispositif destinés à la fabrication de pièces moulées durcies

Publication

EP 2371465 A1 20111005 (DE)

Application

EP 11159354 A 20110323

Priority

DE 102010012579 A 20100323

Abstract (en)

The method for the production of hardened mold components (5) such as structural- or body making parts of motor cars, comprises heating a metal printed circuit board, subsequently transforming in mold cavity (4) of a thermoforming tool (1) to mold component and then hardening through contact with a coolant in the mold cavity of the thermoforming tool, where the coolant is guided through flow channels (7, 8) into the mold cavity. The aggregate condition of the coolant is adjustable. The coolant is supplied with a pressure of up to 25 MPa into mold cavity. The method for the production of hardened mold components (5) such as structural- or body making parts of motor cars, comprises heating a metal printed circuit board, subsequently transforming in mold cavity (4) of a thermoforming tool (1) to mold component and then hardening through contact with a coolant in the mold cavity of the thermoforming tool, where the coolant is guided through flow channels (7, 8) into the mold cavity. The aggregate condition of the coolant is adjustable. The coolant is supplied with a pressure of up to 25 MPa into mold cavity. The mold component is partially cooled with the coolant, whose pressure lies above the vapor pressure of the coolant. The time duration of the coolant supply and/or the height of the pressure are varied. The component temperature of the mold component is measured in the mold cavity and the tool temperature is measured in the area of the contact surface (9) of the mold cavity. The starting time and end time of the coolant supply is controlled in dependent upon the component temperature and/or the tool temperature. The coolant distribution is variably controllable in the mold cavity. The first area of the mold component is subjected with the coolant and the second area of the mold component is not subjected with the coolant or the first area or the second area is subjected with the coolant. The mold component is fixedly held after the reception from the thermoforming tool in a cooling station. The coolant is supplied with a pressure in the mold cavity, and the pressure is adapted during the cooling phase at the vapor pressure of the coolant in control-technical manner. The pressure and/or temperature control is adjusted in dependent upon a temperature measurement on mold component in the thermoforming tool and/or temperature measurement on the thermoforming tool. The coolant is intermittently sprayed in the mold cavity. An independent claim is included for a thermoforming tool for transforming and hardening of metal sheet.

Abstract (de)

Die Erfindung betrifft ein Verfahren und ein Warmformwerkzeug zur Herstellung von gehärteten Formbauteilen, insbesondere von Struktur- oder Karosseriebauteilen von Kraftfahrzeugen. Eine Metallplatine wird bis auf eine Temperatur im spezifischen Austenitisierungstemperaturbereich des Werkstoffs erwärmt, anschließend im Formraum (4) des Warmformwerkzeugs (1) zum Formbauteil (5) warm umgeformt und durch Kontakt mit einem Kühlmittel (KM) im Formraum (4) des Warmformwerkzeugs (1) gehärtet. Hierzu wird das Kühlmittel (KM) durch Zuflusskanäle (7, 8) in den Formraum (4) geleitet. Nach einem ersten Aspekt der Erfindung wird das Formbauteil (5) zumindest teilweise mit einem Kühlmittel (KM) gekühlt, dessen Druck (p KM ) oberhalb des Dampfdrucks (p D ) des Kühlmittels (KM) liegt. Ein zweiter Aspekt der Erfindung sieht vor, dass der Aggregatzustand des Kühlmittels (KM) einstellbar ist.

IPC 8 full level

B21D 22/02 (2006.01); B21D 22/20 (2006.01); B21D 37/16 (2006.01); C21D 1/02 (2006.01); C21D 1/673 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01)

CPC (source: EP US)

B21D 22/022 (2013.01 - EP US); B21D 22/208 (2013.01 - EP US); B21D 37/16 (2013.01 - EP US); C21D 1/02 (2013.01 - EP US); C21D 1/673 (2013.01 - EP US); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP US)

Citation (applicant)

Citation (search report)

Citation (third parties)

Third party :

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

DE 102010012579 B3 20110707; CN 102198465 A 20110928; CN 102198465 B 20160406; EP 2371465 A1 20111005; EP 2371465 B1 20150701; EP 2446978 A1 20120502; EP 2446978 B1 20150429; EP 2446978 B8 20150624; RU 2011110876 A 20120927; RU 2467076 C1 20121120; US 2011232354 A1 20110929; US 8707751 B2 20140429

DOCDB simple family (application)

DE 102010012579 A 20100323; CN 201110060176 A 20110314; EP 11159354 A 20110323; EP 12151528 A 20110323; RU 2011110876 A 20110322; US 201113050500 A 20110317