Importance

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Abstract

A gas-actuated hold-down for punching devices comprising:

a tubular containment body,a hold-down element, adapted to translate within the tubular body in order to protrude from and retract into a first end thereof,a tubular punch die-covering element, which is coaxial to the tubular body, for guiding the hold-down element,an annular closure body, designed to close the tubular containment body at an opposite second end thereof,a pressure chamber defined between the tubular body, the tubular punch die-covering element, the hold-down element and the annular closure body,a fixing flange, which widens radially from the tubular containment body at the second end thereof,the fixing flange having a through charging hole which extends in a radial direction with respect to a main axis of the hold-down, from a surface that is exposed in a configuration for use of the hold-down up to the pressure chamber.

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First Claim