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Hydropneumatic type Blankholder

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Normal series (P.I./N)

PI/N series is applicable to any press and replaces any traditional expeller. It is essentially made up by a cylinder/piston group and by a reservoir that has the particularly aim of containing the liquid and, at the same time, it allows the extraction of the piece in optimal time, as it has closed circuit air being controlled by the gauge, in the superior side. The hexagonal nut, which is placed in the inferior side, allows to adjust the drawing pressure.

ADVANTAGE:

The thrust pressure is constant along the whole drawing pressure;
During return, the press does not undergo any shock ALSO in case of high speed;
Adjustable pressure during extraction;
The construction simpleness allows assembling and disassembling without need of specialized technicians.

Datasheet

Normal Series with removal of chips (P.I./Nsf)

This series maintain the same features of normal series, but it has been studied to remove chips through blankholder's central hole.

The main advantage is the possibility to carry out shearing and drawing in the same work and to collect the chips under the press as simply as possible.

For datasheet you need to see PI/N series datasheet that will be re-elaborate to include removal chip as required by the customer.

Remote adjustment series (P.I./R.D)

The PI/RD series has been studied and made for use on any press with a fixed bench, but especially for heavy drawing work.

The characteristics of this series, given the width structure, make it possible to make use of the whole work surface, thus increasing the performance of the press itself.

ADVANTAGE:

The thrust pressure is constant along the whole drawing stroke;
During return the press does not ungìdergo any shock ALSO in case of high speed;
Adjustable pressure in drawing from 0 to 1/5 ton/press;
The construction simpleness allows assembling and desassembling without need of specialized technicians.

Datasheet

Pneumatic Adjustment series
(P.I./R.P)

PI/RP series takes advantage of the same characteristics of the PI/RD series, but here the regulation is carried out by an hydraulic piston.

ADVANTAGE :

The thrust pressure is constant along the whole drawing stroke;
During return the press does not ungìdergo any shock ALSO in case of high speed;
Adjustable pressure during exdtaction;
The construction simpleness allows assembling and desassembling without need of specialized technicians.

Datasheet