发明名称 |
Vulcanized sheet comprising annular rubber articles, a method of and an apparatus for separating the articles from the vulcanized sheet |
摘要 |
A vulcanized sheet S1 having formed therein annular articles P1 is prepared at first, which sheet comprises thick external bridges (16) in a thin annular zone (14) and at regular angular intervals so that the bridges connect an external flash (13) to a body (15) of the sheet. A recess (22) is formed centrally of an inner waste (20) surrounded by each article. Then, a guide lug (34) is inserted in the recess to correctly position the article, before tearing by of a first punch (35) an inner breakable boundary (26) intervening between the article and the inner waste so as to remove the inner waste from the article. Next, a further guide lug (44) is inserted in a space from which the inner waste has been removed, a die having a bore (31a) of a diameter larger than the article supports the sheet, and finally a second punch (45) tears an outer breakable boundary (12) to separate the article from the sheet.
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申请公布号 |
US5699946(A) |
申请公布日期 |
1997.12.23 |
申请号 |
US19960618819 |
申请日期 |
1996.03.20 |
申请人 |
NAKANISHI METAL WORKS CO., LTD. |
发明人 |
HASHIMOTO, KOICHI;KAMIJI, MICHIYUKI |
分类号 |
B26F1/38;B26F1/02;B26F3/02;B29B11/14;B29C37/00;B29C37/02;B29C69/00;B29D7/01;B29D99/00;B29K21/00;B29K105/24;F16J15/00;(IPC1-7):B26F3/02 |
主分类号 |
B26F1/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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