Press for the injection moulding of plastic materials with a double-toggle closing unit

摘要

A press for the moulding of plastic materials (or for die-casting) of the type with a double-toggle closing unit, having an additional mobile plate (20) which is guided on columns (14) and can be moved between the closing plate (11) and the mobile mould-holder plate (13) and which has two opposing wings (20') outside the guiding columns (14) turned towards the closing plate (11) and such as to pass outside this when the additional plate (20) is moved towards the closing plate (11) to open the press. The toggles (18) are connected to said wings (20') of the additional plate (20) and turn folding themselves back towards the outside of the columns and towards the closing plate (11) when the additional plate moves from the press closing position to the opening position.