Patent ID: 6170296
Filing Date: 2001-01-09
Classification: C03B,Y10T

Abstract:
A mechanism for driving plungers of metal molds in a bottle-making machine in order to move the plungers forward and backward with a predetermined torque in molding a glass material thrown into the metal molds into a predetermined shape by moving the plungers forward, comprising:a reversible drive motor so adjusted as to come into a halt upon receiving a predetermined load;a main gear that rotates in mesh with a drive gear of said drive motor;planetary bevel gears formed integrally with said main gear via arms, revolve in a direction in which said main gear rotates, and rotate in a direction at right angles with the direction of rotation of said main gear upon receiving a predetermined load;a first driven wheel member which rotates in a direction in which said planetary bevel gears revolve, has a first driven bevel gear portion that meshes with said bevel gears and has a rotary shaft thereof;a second driven wheel member arranged concentric with said first driven bevel gear portion being opposed thereto, which rotates in a direction in which said planetary bevel gear portion revolves, has a second driven bevel gear portion that meshes with said bevel gears and has a rotary shaft thereof;a first drive pinion detachably mounted on the rotary shaft of said first driven wheel member and rotates together therewith;a second drive pinion detachably mounted on the rotary shaft of said second driven wheel member and rotates together therewith;a first main drive member for driving a plunger having a rack portion that meshes with said first drive pinion; anda second main drive member for driving a plunger having a rack portion that meshes with said second drive pinion.