HYDRAULIC, PNEUMATIC, PNEUMATIC/HYDRAULIC OR COMBINED PNEUMATIC/EXPLOSION PRESS

摘要

PCT No. PCT/CH83/00141 Sec. 371 Date Aug. 19, 1985 Sec. 102(e) Date Aug. 19, 1985 PCT Filed Dec. 14, 1983 PCT Pub. No. WO84/02492 PCT Pub. Date Jul. 5, 1984.Press for manufacturing molded or pressed products, comprising a press tool fixed at one end of a moving cylinder. Said moving cylinder is coaxially mounted inside a fixed guiding cylinder fixed and coaxially suspended inside a cylinder forming the outer envelope of the press. The press has a moving wall defining a first variable volume chamber, eight hydraulic jacks with free differential pistons arranged in crown about the central cylinder. The outer envelope comprises a widening provided with at least a bore wherein are arranged explosion means to cause the displacement of the press tool when the press is used as a combined pneumatic/explosion press. The press has reduced overall dimensions, and may be adapted to the manufacture of different articles at various working rates by simple and fast modifications.