| 摘要 |
An improved control system for a dual slide type stock feeder for punch presses and the like, said control system being adapted to cause the feeder to execute two serial feed strokes in response to each cyclic operation of the punch press. The control system comprises a control plunger which is responsive to the movement of the press ram and which is adapted to actuate a fluid control circuit that causes one of said feed slides to execute a feed stroke and then causes the other feed slide to execute a feed stroke; there being two serial stock feed strokes produced for each cyclic operation of said control plunger. The feed slides may be controlled so as to operate in a substantially 180 degree mutual phase relation, or each may automatically complete an index stroke immediately after completing a feed stroke so that both of said feed slides are normally disposed in indexed positions.
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