| 摘要 |
A reciprocating press for forming workpieces includes a tilting table that supports the workpiece and positions it with respect to the press tooling as the press closes, and then is pivoted upward into an inclined orientation as the press opens so that the finished workpiece falls down the table and is automatically discharged from the press. A preferred embodiment has a lifting arm attached to an upper reciprocating press member that carries an upper forming tool such as a punch. The lower end of the lifting arm engages the tilting table such that the table is pivoted about a horizontal axis in concert with the upward and downward movement of the reciprocating press member. The press preferably also includes a safety door that is automatically closed before the press fully closes and is opened again as the press opens such that operator access to the moving press parts is prevented by the door during a press cycle. The safety door is powered by a system employing a pair of pneumatic cylinders between which air is pumped in response to the opening and closing of the press. The press also includes stroke-adjusting variable-length collars mounted on die posts, and one or more shims secured to the reciprocating press member, for varying a stroke distance of the press.
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