Material or article handling – With weighing
Patent
1985-07-22
1987-05-12
Spar, Robert J.
Material or article handling
With weighing
1983462, 269 50, 269 63, 414100, 414118, 414223, 901 7, B23Q 704, B65G 5902
Patent
active
046645756
ABSTRACT:
Workpieces to be machined are stacked on all but one of a series of uniformly spaced vertical guide bars on a turntable movable along a transfer path. An elevator mechanism moves into engagement with the turntable and lifts a carrier with a stack of workpieces to be machined on one of the guide bars so that the uppermost workpiece is in a position to be grasped and transferred to a machine tool by a robot arm. The elevator also positions a workpiece carrier on an adjacent guide bar so that the carrier is positioned for the stacking of machined workpieces thereon by the robot arm. The workpiece carriers are positioned by the elevators in response to signals from photoelectric detectors. When all of the workpieces on one carrier are machined and stacked on an adjacent carrier and said one carrier is unloaded, the elevator mechanism is temporarily separated from the turntable and the turntable is rotated by the distance of twice the spacing between adjacent guide bars. The elevator mechanism is reengaged with the turntable, and workpieces from a third guide bar are transferred to the machine tool and then to the unloaded guide bar. The operation is repeated until all of the workpieces on all of the guide bars are machined and transferred.
REFERENCES:
patent: 3791537 (1974-02-01), Conklin
patent: 4189133 (1980-02-01), Arrasmith et al.
patent: 4196511 (1980-04-01), Kolosov et al.
patent: 4264254 (1981-04-01), Chang
Nagasawa Hiroaki
Ohmura Kazumi
Suyama Yasuyuki
Krizek Janice
Spar Robert J.
Tsubakimoto Chain Co.
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