Hydraulic overload protector for mechanical press

Details Hydraulic overload protector for mechanical press Hydraulic overload protector for mechanical press

1987-10-06

1989-05-09

Falik, Andrew M.

Presses

Portable receptacle lid applying

With gathering of contents

B30B 1528

Patent

active

048278394

ABSTRACT:
A hydraulic overload protector for a mechanical press is provided with a cylindrical operational oil chamber which is formed in a vertical direction. A piston is vertically slidably inserted into a slide. The operational oil chamber is provided with a friction-contacting cylinder. During press operation, the hydraulic pressure of the operational oil chamber fixes the slide to the piston at a predetermined force through the friction-contacting cylinder, so that a pressing force is transmitted from the piston to the slide from an overload. When the slide is overloaded by foreign matter, the piston slides downwards in the slide in resistance to the piston-fixing force, whereby an overload-safe operation is effected.

REFERENCES:
patent: 4085669 (1978-04-01), Yonezawa
patent: 4166415 (1979-09-01), Spanke et al.
patent: 4289066 (1981-09-01), Proga
patent: 4456112 (1984-06-01), Jones, Jr.
patent: 4677908 (1987-07-01), Imanishi et al.

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