Refuging system for emergency of transfer feeder
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 10, 1999
Grant Date -
N/A
app pub date -
Jun 15, 1995
filing date -
Jul 1, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
There is provided a refuging system for transfer bars of a transfer feeder of a transfer press, in which the transfer bars are driven by a transfer bar driving mechanism including an induction type servo motor. The refuging system includes a servo control for controlling the induction type servo motor, a detector for detecting an occurrence of an abnormal condition of the servo control and urgently stopping operations of a slide of a press body of the transfer press and the induction type servo motor, a detector for detecting a crank angle of the press body and discriminating an area in which the slide or a mold of the press body interfere with the transfer bar of the transfer feeder or an attachment therefor attached to the transfer bar, and a driver for driving the transfer bar to a position at which the slide and the mold of the press body do not interfere with the transfer bar of the transfer feeder and the attachment by applying an A.C. voltage to the induction type servo motor at a time when the operations of the slide and the induction type servo motor begin to be urgently stopped in the interference area.
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