Patent ID: 8430802
Filing Date: 2013-04-30
Classification: B31B

Abstract:
1. A press particularly for forming finished articles, such as containers or trays of paper, starting from a sheet of moisturized paper, the press comprising: a bedplate having a fixed die holder plane and holding a head with a moving die-holder plane movable, compared to the fixed plane, between an opening and closing position, wherein a lower half-die is attached to the fixed die holder plane, wherein an upper half-die is attached to the moving die-holder plane, said moving die-holder plane being powered by an electric actuator to actuate said opening and closing movements, said half-dies being provided with heating means to dry and harden the paper in a set closed position before the die begins the open movement, wherein said head comprises a plate or fixed crosspiece and the moving die-holder plane is mounted on said crosspiece, guided by bars and supported by means of piston rods operating in pneumatic balancing cylinders fixed to said plate or crosspiece, said electric actuator comprising a screw that connects up to a ball or roller lead screw nut and in an electric drive motor.