Device for producing microphone protective net |
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| 申请号 | JP23127482 | 申请日 | 1982-12-23 | 公开(公告)号 | JPS59118235A | 公开(公告)日 | 1984-07-07 |
| 申请人 | Audio Technica Corp; | 发明人 | NEMOTO MITSUO; | ||||
| 摘要 | PURPOSE:To produce a secure protective net with good workability by caulking a metallic ring to a metallic net in the upper half part having a semispherical shape and a metallic net in the lower half part having an open bottom part thereby binding both nets to one body. CONSTITUTION:The opening edge of an upper metallic net 6a and the opening edge of a lower metallic net 6b are fitted into the groove parts 15, 15 between the inner flanges 14, 14 and outer flanges 20, 20 of a metallic ring 8 and are set on the inside surface of a ring rest roll 21. A heating hammer 1 is inserted into the net 6b from the open port side and is so adjusted to press the gear-shaped crest part of a caulking roll 2 to the inner flanges 14, 14 of the ring 8. When the caulking surface of the ring 8 is heated with a heater 3, the revolving shaft 4 of the hammer 1 is striken toward the outside in a radial direction by an electromagnetic plunger 9, by which the flanges 14, 14 are bent and are bitten in the crushed state into the mesh of the nets 6a, 6b. Such heating and striking are performed over the entire inside circumference of the ring 8, whereby the nets 6a and 6b are joined and fixed. | ||||||
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| 说明书全文 | |||||||
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