EP 3520917 A1 20190807 - HOT PRESS PROCESSING DEVICE AND HOT PRESS PROCESSING METHOD
Title (en)
HOT PRESS PROCESSING DEVICE AND HOT PRESS PROCESSING METHOD
Title (de)
HEISSPRESSVERARBEITUNGSVORRICHTUNG UND HEISSPRESSVERARBEITUNGSVERFAHREN
Title (fr)
DISPOSITIF ET PROCÉDÉ DE TRAITEMENT SOUS PRESSION À CHAUD
Publication
Application
Priority
- JP 2016214708 A 20161101
- JP 2017004827 W 20170209
Abstract (en)
The purpose is to eliminate burrs-occurring on a press-formed work even with a configuration in which a trimming process is to be performed on a high-temperature blank sheet material, thereby eliminating deburring process that is to be performed after the forming, reducing the processing man-hours and consequently achieving product cost reduction. During the press forming process of forming a blank sheet material 3 while clamping a die 1 on a punch 2, a trim portion 3a is clamped between a trim holding step 6 and a cut holder 8 in such a state that elastic force of a spring mechanism 9 is being applied on the trim portion 3a. As a press forming operation by the die 1 goes on, the trimming blade 7 is relatively moved along an outer margin 5b of a punch-side forming surface portion 5 while the cut holder 8 opposes elastic force of the spring mechanism 9 by receiving pressing force of the trim holding step 6 so that the trimming blade 7 shears and cuts off the trim portion 3a between the trimming blade 7 and the tip end corner 5c on the outer margin 5b of the punch-side forming surface portion 5.
IPC 8 full level
B21D 22/20 (2006.01); B21D 24/00 (2006.01); B21D 28/00 (2006.01)
CPC (source: EP US)
B21D 22/022 (2013.01 - US); B21D 22/20 (2013.01 - EP US); B21D 24/00 (2013.01 - EP US); B21D 28/00 (2013.01 - EP US); B21D 28/26 (2013.01 - US); B21D 37/16 (2013.01 - US); C21D 1/18 (2013.01 - EP US); C21D 1/673 (2013.01 - EP US)
Citation (search report)
See references of WO 2018083814A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE 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)
EP 3520917 A1 20190807; CN 109843463 A 20190604; JP WO2018083814 A1 20190919; MX 2019004639 A 20190918; US 2019247906 A1 20190815; WO 2018083814 A1 20180511
DOCDB simple family (application)
EP 17867786 A 20170209; CN 201780062996 A 20170209; JP 2017004827 W 20170209; JP 2018548541 A 20170209; MX 2019004639 A 20170209; US 201916395211 A 20190425