Invention Grant
- Patent Title: Method for producing a molded part provided with a through-hole
- Patent Title (中): 制造具有通孔的模制件的方法
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Application No.: US13122648Application Date: 2009-10-02
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Publication No.: US09120142B2Publication Date: 2015-09-01
- Inventor: Andreas Matt , Mihai Vulcan
- Applicant: Andreas Matt , Mihai Vulcan
- Applicant Address: CH Reinach
- Assignee: Hatebur Umformmaschinen AG
- Current Assignee: Hatebur Umformmaschinen AG
- Current Assignee Address: CH Reinach
- Agency: The Webb Law Firm
- Priority: CH1607/08 20081010
- International Application: PCT/CH2009/000316 WO 20091002
- International Announcement: WO2010/040238 WO 20100415
- Main IPC: B28B1/48
- IPC: B28B1/48 ; B21K1/76 ; B21K1/04

Abstract:
To produce a molded part with a through-hole, a rod-shaped blank is pushed through a guide into a cavity and fixed in place. The end region of the blank is compressed and reshaped into a disk. A disk core having the same cross-sectional shape as the blank is ejected out of the disk using a punch and pushed into the guide and moved back together with the unshaped part of the blank. The disk is severed from the disk core and the molded part is removed from the cavity. During the penetration step, the disk present in the cavity is subjected to an axial pressure in the disk core ejection direction and the blank is subjected to an axial counter-force opposite to the disk core ejection direction.
Public/Granted literature
- US20110193257A1 Method for Producing a Molded Part Provided with a Through-Hole Public/Granted day:2011-08-11
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