Conveying method and a conveyor control device

Details Conveying method and a conveyor control device Conveying method and a conveyor control device

1993-08-25

1994-12-13

Gastineau, Cheryl L.

Conveyors: power-driven

With means to facilitate working, treating, or inspecting...

Condition responsive control of conveyor or station apparatus

1983462, 198358, B65G 4300

Patent

active

053722337

ABSTRACT:
In a conveyor system including a plurality of processing devices such as wire bonders that are lined-up and supplied with workpieces via a plurality of individually operated conveyors that are aligned linearly, when one (or more) processing device is ready to perform its processing such as bonding, a stopper installed in front of the processing device is raised to stop the conveyance of the workpiece, and when a sensor provided near the conveyor senses the conveyed workpiece, the conveyor is temporarily stopped and then rotated again for a fixed period of time or is slowed down in speed and then rotated for a fixed period of time or a fixed distance. Thus, a workpiece being conveyed is slowed down and therefore avoided from hitting the stopper at a high speed. Thus, the workpiece is prevented from being damaged at the front edge. Also, since the workpieces do not bounce back, they are stopped at the same stopping positions.

REFERENCES:
patent: 3429416 (1969-02-01), Provost et al.
patent: 4852717 (1989-08-01), Ross et al.
patent: 4921092 (1990-05-01), Crawford et al.
patent: 5203443 (1993-04-01), Toriumi et al.

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