Overload protection in presses

Details Overload protection in presses Overload protection in presses

1984-01-20

1985-01-08

Wilhite, Billy J.

Presses

Portable receptacle lid applying

With gathering of contents

100269R, B30B 132

Patent

active

044921543

ABSTRACT:
An overload protection for presses in which the working stages are protected against overload by balance-like overload pressure-responsive devices; to further protect the press balance-like adding pressure-responsive devices are also used whose operating point adjusted to the limit loads of the connecting rods is adjusted to a smaller value than the sum of all of the balance-like overload pressure-responsive devices; the adding pressure-responsive devices are connected in parallel since the pressure space of each balance-like overload pressure-responsive device is connected to one pressure space each of each adding pressure-responsive device; the cross sectional areas of the pistons of the balance-like adding pressure-responsive devices are calculated from the distance of the working stages to the actuating planes; for the left adding pressure-responsive device, from the distance of the working stages to the right actuating plane whereas for the right adding pressure-responsive device, from the distance of the working stages to the left actuating plane. The pre-pressure in the pressure spaces is adjusted by way of pressure control devices supplied by pump aggregates.

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