Retracting clamp

Details Retracting clamp Retracting clamp

1983-05-10

1985-03-26

Watson, Robert C.

Work holders

With fluid means

Plural positioning means sequentially operated

269 32, 269 93, 269234, B23Q 308

Patent

active

045068712

ABSTRACT:
A retracting clamp suited for clamping a die or a workpiece, a die of an injection molding machine in particular, is disclosed, wherein a hydraulic cylinder is provided in the rear part of a clamp housing, a clamp block is carried slidably by a gently tapered underside of the front part of its piston rod, and the clamp block is urged forward by a spring so as to drive it for clamping at its extruded position and, when clamping is over, the clamp block is retracted to its retracted position and a piston is urged toward the clamping position as necessary by a spring, and the position of the clamp block is detectable by means of limit switches.

REFERENCES:
patent: 3363514 (1968-01-01), Ramcke
patent: 4027867 (1977-06-01), Pollington
patent: 4338787 (1982-07-01), Kawaguchi
patent: 4365792 (1982-12-01), Johns

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