发明名称 PRESSING APPARATUS FOR PREVENTING THE WORKING PIECE FROM EJECTING IN THE REVERSE DIRECTION AND DIE FOR USING IN THE SAME
摘要 A pressing apparatus and a die for using in the same are provided to prevent a processing object from being ejected to the lead-out direction of the punch. A pressing apparatus and a die for using in the same comprise a open end part(22) more than one formed in the inner side of the die hole in the die(20); one or more air flow channels(26) connecting the second opened end part(24) more than one formed in the outer profile of die is formed; and an airflow formation means forming the airflow which is possible for the fluid communication, is connected to the second opened end part and follows the air flow channel.
申请公布号 KR20080107655(A) 申请公布日期 2008.12.11
申请号 KR20070055683 申请日期 2007.06.07
申请人 KIM, TAE BUNG 发明人 KIM, TAE BUNG
分类号 B21D28/14;B21D45/04;B30B15/00;B30B15/02 主分类号 B21D28/14
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