Thermoforming machine

In a thermoforming machine having a plurality of work stations, including at least a charging station for the insertion of a plate of thermoplastic material, a heating station for heating the plate, and a forming station for forming the plate into a desired article, with said stations being arranged in a circle, a like plurality of clamping frames for holding respective plates of thermoplastic material, means for mounting said clamping frames so that they can be pivoted successively from station to station, and wherein said forming station is provided with a height adjustable mold table accommodating a deep drawing mold, and a height adjustable blow box;

• the improvement comprising means for adjusting the height of said mold table including a pair of hydraulic cylinders arranged symetrically adjacent respective sides of said mold table, with said cylinders being essentially vertical and extending into the interior of said blow box and with each said cylinder and its associated piston rod being connected between a stationary support plate for said mold table and said mold table.