Invention Grant
- Patent Title: Cushion pin device for press
- Patent Title (中): 用于压力机的缓冲销装置
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Application No.: US14220852Application Date: 2014-03-20
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Publication No.: US09433990B2Publication Date: 2016-09-06
- Inventor: Ju Young Kim
- Applicant: Hyundai Motor Company
- Applicant Address: KR Seoul
- Assignee: HYUNDAI MOTOR COMPANY
- Current Assignee: HYUNDAI MOTOR COMPANY
- Current Assignee Address: KR Seoul
- Agency: Morgan, Lewis & Bockius LLP
- Priority: KR10-2013-0106560 20130905
- Main IPC: B21D24/14
- IPC: B21D24/14 ; B21D24/08 ; B30B15/06 ; B21D24/02

Abstract:
A cushion pin device for a press having a cushion pad in which a blank holder is seated on the top thereof outside a lower mold, and locks a blank holder to an upper mold while pressurizing an edge of a molded panel, includes: a cushion support disposed below the cushion pad, a cushion cylinder connected with a lower part of the cushion pad to move up or down the cushion pad from the cushion support, a linear scale mounted between the cushion pad and the cushion support to measure the position of the cushion pad, a main pressure control unit that keeps internal pressure of each cushion cylinder similarly, and a sub pressure control unit that is interconnected with the main pressure control unit so as to control the locking position of the cushion pad when each cushion cylinder operates.
Public/Granted literature
- US20150059425A1 CUSHION PIN DEVICE FOR PRESS Public/Granted day:2015-03-05
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