| 摘要 |
A reversible motor is connected through a speed reducing drive train to rotate a worm having pitched and pitchless grooves to advance intermittantly a ram mounted pressing head within a box fastened to a face plate holding interchangeable cutting frames and orificed plates to produce desired protrusions; the same drive train to rotate a shaft to which attach interchangeable cutting knives to revolve flush with the outward face of said face plate to sever the extrusions only upon the stationary position of said pressing head. The length of the extrusions for dicing is determined by the distance between the centers of the pitched and pitchless grooves of said worm, which is equal to the spacing between the blades disposed in quadrillations of the specific cutting frame chosen to produce said square extrusions. Reversing the rotation of the motor retracts the pressing head to its starting position in the box. A motor switch supplies electrical power to the motor and its direction of rotation is controlled by a forward reverse switch actuated by the closing and opening of the box door. A forward rotation limit switch stops the motor automatically at the completion of a full extrusion cycle and a reverse rotation limit switch stops the motor automatically at the completion of a full retracting cycle.
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