发明名称 |
Wedge device for linear force amplification in a press |
摘要 |
<p>A wedge device for a press for controllably exerting high amounts of force in a clamping operation during a semiconductor packaging process and for facilitating a linear force output in relation to its input. The wedge device is powered by a servo motor which is coupled to a planetary screw by a set of pulleys and a timing belt. The screw is mated with a nut which is prevented from rotating so that the rotation of the screw causes the nut to move in a linear direction. Metal extensions join the nut to a bottom wedge such that the wedge moves together with the nut. Slidably disposed on top of the bottom wedge is a block bearing firmly attached to a complementary wedge. The complementary wedge is free to move in a vertical direction but not in a horizontal direction. As the bottom wedge moves in a horizontal direction, the complementary wedge moves in a vertical direction. The complementary wedge is placed underneath a press to provide the clamping force necessary for a semiconductor packaging operation.</p> |
申请公布号 |
SG64937(A1) |
申请公布日期 |
2000.08.22 |
申请号 |
SG19960010127 |
申请日期 |
1996.06.21 |
申请人 |
ADVANCED SYSTEMS AUTOMATION LIMITED |
发明人 |
QIANG YU |
分类号 |
B29C33/22;B29C45/66;B29L31/34;B30B1/40;H01L21/00;H01L21/56;(IPC1-7):H01L21/56;H01L21/68 |
主分类号 |
B29C33/22 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|