Claims
- 1. An electronic part mounting method for converting continuous rotation of a rotary head driving motor into intermittent rotation of a rotary head, said rotary head having plural suction and mounting nozzles, and said rotary head driving motor having variable rotational speeds including at least a first rotational speed for stable suction and mounting of said electronic part when the rotary head is stopped, and a second rotational speed for not changing the suction posture when the rotary head is rotating, the method comprising the steps of:
- moving said plural suction and mounting nozzles up and down in cooperation with the rotation of said rotary head driving motor; and
- mounting the electronic parts by said plural suction and mounting nozzles;
- wherein said rotary head driving motor is accelerated to a higher rotational speed when the rotary head is rotating and the first rotational speed is less than the second rotational speed, thereby reducing the mounting cycle time, and
- further wherein said rotary head driving motor is accelerated to a higher rotational speed when the rotary head is stopped and the first rotational speed is greater than the second rotational speed, thereby reducing the mounting cycle time.
- 2. An electronic part mounting apparatus having a rotary head driving motor with variable rotational speeds, and a rotary head, said rotary head having plural suction and mounting nozzles, the mounting apparatus comprising:
- means for converting continuous rotation of said rotary head driving motor into intermittent rotation of a rotary head;
- and means for moving said plural suction and mounting nozzles up and down in cooperation with the rotation of said rotary head driving motor, for mounting the electronic parts while rotating intermittently;
- further comprising means for rotating said rotary head driving motor at different speeds when said rotary head is rotating and when said rotary head is stopped for mounting the electronic parts.
- 3. An electronic part mounting apparatus of claim 2, wherein said means for rotating said rotary head driving motor at different speeds when said rotary head is rotating and when said rotary head is stopped for mounting the electronic parts, accelerates said rotary head driving motor to a higher rotational speed,
- (a) when the rotary head is rotating and the rotary head drive motor rotational speed for stable suction and mounting is less than the rotational speed for not changing the suction posture, thereby reducing the mounting cycle time, and
- (b) when the rotary head is stopped and the rotary head drive motor rotational speed for stable suction and mounting is greater than the rotational speed for not changing the suction posture, thereby reducing the mounting cycle time.
Priority Claims (1)
Number |
Date |
Country |
Kind |
7-232559 |
Sep 1995 |
JPX |
|
Parent Case Info
THIS APPLICATION IS A U.S. NATIONAL PHASE APPLICATION OF PCT INTERNATIONAL APPLICATION PCT/JP96/02582.
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
102e Date |
371c Date |
PCT/JP96/02582 |
9/11/1996 |
|
|
3/11/1998 |
3/11/1998 |
Publishing Document |
Publishing Date |
Country |
Kind |
WO97/10695 |
3/20/1997 |
|
|
US Referenced Citations (9)
Foreign Referenced Citations (2)
Number |
Date |
Country |
4-113698 |
Apr 1992 |
JPX |
7-122891 |
May 1995 |
JPX |
Non-Patent Literature Citations (3)
Entry |
Japanese language Search Report for Int'l Application No. PCT/JP96/02582 dated Dec. 3, 1996. |
English translation of Japanese language Search Report. |
European Search Report dated Oct. 11, 1999, Appn. Number EP 96930352. |