Title:
ボンディングワイヤの振れ検出器
Document Type and Number:
Japanese Patent JP4556361
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a displacement detector for detecting a displacement of bonding wire easily and automatically. SOLUTION: The displacement detector is provided with a unwinding spool 1, a plurality of pulleys 4, 5, 6, 7 through which the bonding wire 2 passes, a strain gauge 3 mounted on a mounting stay for the pulley 4 through which the bonding wire 4 from the unwinding spool 1 firstly passes. There is also provided a means for detecting that bonding wire 2 on the unwinding spool 1 has been overtaken according to an excessive output voltage of the strain gauge 3 and an excessive pulse width of a pulse wave detected in the output voltage of the strain gauge 3. When detecting overtaking, an alarm lamp is lit to inform an operator of the overtaking.
Inventors:
Kazuaki Mori
Hiroshi Omiya
Satoshi Akutsu
Fumio Sato
Hiroshi Omiya
Satoshi Akutsu
Fumio Sato
Application Number:
JP2001249328A
Publication Date:
October 06, 2010
Filing Date:
August 20, 2001
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
B65H49/18; B65H63/06; H01L21/60
Domestic Patent References:
| JP58092256U | ||||
| JP4100635A | ||||
| JP8206764A |
Attorney, Agent or Firm:
Kameda Tetsuaki