| 摘要 |
An improved pneumatic feeder for a punch press or the like wherein the operation of the feeder is adapted to be slaved in a semi-automatic manner to the operation of the punch press. The feeder is provided with a stock advancing feed slide and a control valve therefor whereby the stock advancing slide is normally positioned in a rearward or indexed position, and is adapted, when the feeder is triggered in response to the operation of the press, to execute a feed stroke and immediately thereafter automatically execute a non-feed stroke so as to return to said normal indexed position where it will remain until said feeder is again triggered in response to the next operation of said press. This semi-automatic action is obtained by the provision of an improved simple, relatively inexpensive and fast acting mechanical linkage for controlling the shifting action of the said feeder control valve; which linkage not only affords a much simpler mode of interfacing the feeder with the press, but requires no significant modification of the press.
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