| 摘要 |
A molding machine for polystyrene elements with locking systems of die halves (2, 3) obtained by means of multiple mechanical irreversible screw actuators (4). Each actuator (4) receives motion from a chain drive that rotates the toothed crown (27) and the female screw, driving the shaft (15) into motion by means of its acme thread screw (21). The pin engages on the cam (30) located in the body. The cam profile drives the shaft (15) first into rotation-translation and then into axial translation. Further to these movements, the locking element that is joined to the shaft locks the two die halves (2, 3). Therefore, locking and unlocking of the moving die half (2) is obtained by means of the synchronized motion of a series of kinematic mechanisms that allow for obtaining high closing forces with small controlling forces. |
