发明名称 |
Spot welding machine |
摘要 |
In opposition to a lower electrode (31) fixed to a frame (3), an upper electrode (29) is carried by an upper pressing base (23), which is engaged with a vertical guide rail (25) and joined by a resilient slide mechanism to a piston rod (35L) of a hydraulic cylinder (35) connected to a hydraulic circuit operable for an increased distance (L3) between electrode shanks (15, 7) and fastened at a head end thereof to a lower pressing base (33), which is engaged with the guide rail and joined to a piston rod (37L) of an air cylinder (37) fastened at a head end thereof to the frame and connected to a pneumatic circuit operable for supplying a balancing pressure to have the piston rod (37L) thereof contracted to stand with a total load and for relieving the pressure when a mechanical valve (85) is operated with a pedal arm (49) stepped down for starting a welding, while the pneumatic circuit is changed over by a limit switch (57) to force down the lower pressing base. <IMAGE> |
申请公布号 |
EP0819496(A3) |
申请公布日期 |
2002.03.20 |
申请号 |
EP19970112178 |
申请日期 |
1997.07.16 |
申请人 |
AMADA METRECS COMPANY, LIMITED |
发明人 |
NAKAMURA, YOSHIO;ARIMA, SHIGENOBU;KITAGUCHI, SHINICHI |
分类号 |
B23K11/24;B23K11/11;B23K11/31 |
主分类号 |
B23K11/24 |
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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