Injection molding apparatus

Claim 1

A MOLDING MACHINE COMPRISING A FRAME, A STATIONARY PLATE MOUNTED ON SAID FRAME AND HAVING AN AXIAL BORE AND AN EXTRUDER FACE SUBSTANTIALLY NORMAL TO THE AXIS THEREOF, A SPRUE ORIFICE COLLINEARLY OF AND IN COMMUNICATION WITH THE AXIAL BORE OF SAID STATIONARY PLATE, A ROTATABLE PLATE HAVING HAVING AN ELONGATED SHAFT AND AN EXTRUDER FACE SUBSTANTIALLY NORMAL TO THE AXIS THEREFORE, SAID ELONGATED SHAFT EXTENDING AXIALLY FROM SAID ROTABLE PLATE IN THE DIRECTEION OPPOSITE FROM SAID EXTRUDER FACE AND HAVING AN AXIL BORE THE DIAMETER OF THE LEADING END OF WHICH IS SUBSTANTIALLY EQUAL TO THE AXIAL OF SAID STATIONARY PLATE, MEANS FOR MOUNTING SAID ROTATABLE PLATE ON SAID FRAME COLLINEARLY OF SAID STATIONARY PLATE FOR ROTATION AND WITH THE EXTRUDER FACE THEREOF IN CLOSE PROXIMITY TO THE EXTRUDER FACES OF SAID STATIONARY PLATE WHEREBY RELATIVE ROTATION OF SAID EXTRUDER FACES WILL FORCE MOLTEN POLYMER INTO THE AXIAL BORE OF SAID ROTATABLE PLATE, AN INJECTION RAM HAVING A LEADING END FITTING THE AXIAL BORES OF SAID STATIONARY AND ROTATABLE PLATES WITH A CLOSE TOLERANCY, SAID INJECTION RAM BEING MOUNTED IN THE AXIAL BORE OF SAID ROTATABLE PLATE FOR MOVEMENT ENDWISE THEREOF TO ADVANCE THE LEADING END OF SAID RAM INTO AND TO RETRACT THE SAME FROM THE AXIAL BORE OF SAID STATIONARY PLATE AND THEREBY TO FORCE MOLTEN POLYMER FROM SAID BORE OUT SAID SPRUE ORIFICE AND TO PROVIDE FOR THE ACCUMULATION IN SAID BORE OF MOLTEN POLYMER DELIVERED THERETO BY SAID EXTRUDER FACES, MEANS FOR ROTATING SAID ROTATABLE PLATE, MEANS FOR IMPARTING ENDWISE MOVEMENT TO SAID RAM, AND MEANS AT THE LEADING END OF SAID RAM FOR RECEIVING MOLTEN POLYMER FROM SAID POLYMER OUTLET WHEN SAID RAM IS ADVANCED INTO THE AXIAL BORE OF SAID STATIONARY PLATE AND FOR DISCHARGING THE MOLTEN POLYMER WHEN SAID RAM IS RETRACTED INTO THE AXIAL BORE OF SAID ROTABLE PLATE.