Electronic parts-mounting apparatus

• US 5,661,239 A
• Filed: 07/19/1996
• Issued: 08/26/1997
• Est. Priority Date: 07/19/1995
• Status: Expired due to Term

• Current Assignee: Yamaha Hatsudoki Kabushiki Kaisha (Yamaha Corporation)
• Original Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Inventors: Takeuchi, Takayoshi
• Primary Examiner(s): RAEVIS, ROBERT R
• Application Number:
  US08/684,951
• Time in Patent Office: 403 Days
• Field of Search: 29/743, 73/432.1, 248/682, 209/556, 209/573, 209/574, 209/575, 209/632, 209/633
• US Class Current: 73/432.1
• CPC Class Codes: H05K 13/0409 Sucking devices
• CPC Class Codes: H05K 13/041 having multiple pick-up tools
• CPC Class Codes: H05K 13/082 Integration of non-optical monitoring devices, i.e. using non-optical inspection means, e.g. electrical means, mechanical means or X-rays
• CPC Class Codes: Y10T 29/53191 Means to apply vacuum directly to position or hold work part

Abstract

An electronic parts-mounting apparatus includes at least one mounting head with a plurality of sucking nozzles mounted thereon extending downward for use in sucking an electronic part. The at least one mounting head is intermittently moved by rotation of a rotary table and stopped at a plurality of stop positions including a mounting station at which an electronic part is mounted nozzles mounted on the mounting head, at least one on a circuit board by each of the plurality of sucking nozzle-adjusting station at which a sucking nozzle corresponding to the electronic part is selected from the plurality of sucking nozzles and the sucking nozzle corresponding to the electronic part is placed in a predetermined active position in which the sucking nozzle corresponding to the electronic part is capable of a sucking operation before sucking of the electronic part, and a sucking station at which the electronic part is sucked by the sucking nozzle corresponding to the electronic part, in a mentioned order at least with respect to the mounting station, the at least one nozzle-adjusting station, and the sucking station. An excessively downward projecting state of any of the plurality of the sucking nozzles in the active position is detected between the mounting station and the at least one nozzle-adjusting station.

Claims

1. In an electronic parts-mounting apparatus including at least one mounting head, a plurality of sucking nozzles mounted on each of-said at least one mounting head so as to extend downward for use in sucking an electronic part, intermittent rotation means for intermittently moving said at least one mounting head by rotation thereof, at least one nozzle-adjusting station at which a sucking nozzle corresponding to a said electronic part being selected from said plurality of sucking nozzles, and said sucking nozzle corresponding to said electronic part being placed in a predetermined active position in which said sucking nozzle corresponding to said electronic part is capable of performing a sucking operation before sucking of said electronic part, a sucking station at which said electronic part is sucked by said sucking nozzle corresponding to said electronic part, and a mounting station at which said electronic part is mounted on a circuit board and each of said plurality of sucking nozzles is mounted on said at least one mounting head, said intermittent rotation means causing said at least one mounting head to stop at a plurality of stop positions including said mounting station, said at least one nozzle-adjusting station, and said sucking station, in the order stated at least with respect to said mounting station, said at least one nozzle-adjusting station, and said sucking station,

the improvement comprising nozzle level-detecting means arranged between said mounting station and said at least one nozzle-adjusting station for detecting an excessively downward projecting state of any of said plurality of said sucking nozzles in the said active position.

2. An electronic parts-mounting apparatus according to claim 1, wherein said nozzle level-detecting means comprises a contact block to be brought into contact with any of said plurality of said sucking nozzles in said excessively downward projecting state in said active position of a nozzle to be displaced thereby, and a detecting block for detecting displacement of said contact block to thereby detect said excessively downward projecting state of any of said plurality of said sucking nozzles in its said active position.

3. An electronic parts-mounting apparatus according to claim 2, wherein said detecting block comprises a proximity sensor.

4. An electronic parts-mounting apparatus according to claim 2, wherein said contact block is formed by part-removing means arranged such that any of said plurality of said sucking nozzles in its said active position passes immediately above said part-removing means, thereby also serving as means for being brought into contact with an electronic part mounting which has been canceled to thereby remove said electronic part whose mounting has been canceled from said sucking nozzle.

5. An electronic parts-mounting apparatus including sucking nozzles for sucking electronic parts, intermittent rotation means for intermittently moving said sucking nozzles, and part-removing means arranged in a manner such that any of said plurality of said sucking nozzles which is in a predetermined active position for a performing sucking operation, passes immediately above said part-removing means, whereby said part-removing means is brought into contact with an electronic part whose mounting has been canceled to thereby remove said electronic part, whose mounting has been canceled, from said sucking nozzle,

the improvement comprising a detector for detecting displacement of said part-removing means.