VORRICHTUNG ZUR HERSTELLUNG VON SCHAUMFORMTEILEN

The upper platen or mold plate (3) is guided in two opposite slots (4) or cam tracks in the machine stand (1). The guides are alternatively recesses or projections in the machine stand. Swinging levers (6) of the central drive unit are pivoted to one end of connecting rods (5). Their other ends are pivoted to the platen carrier sections. The guides have an inverted-J shape at the top (9). They descend smoothly toward the lower platen, without sudden alteration in direction. The curved upper sections of the J-tracks are dimensioned to guide the vertically-spaced guide projections of the platen carrier sections. The swinging levers are connected to drive wheels (11) which are turned by drive chains (12) or belts, driven by wheels (13) of the central drive unit. These wheels are fixed to a coupling shaft of the central drive unit. The shaft is located at the rear of the machine stand and is turned by one or two electric motors (15). The machine stand is carried on pivots, allowing it to be swung forward.