Apparatus for forming glass containers

Abstract

A glass container forming machine section ( ) in which the mold carrying arms ( ) that are pivoted on shafts ( ), respectively, about a common axis (A) are caused to counteroscillate between open positions in which the mold halves ( ) that are respectively carried by the arms ( ) are separated, and closed positions in which the mold halves are joined to define molding cavities therebetween. The opening and closing motions of the mold carrying arms are powered by a single reversible electrical servo motor ( ), which drives a drive gear ( ). The drive gear ( ) directly drives a first driven gear ( ) and an intermediate driven gear ( ) which, in turn, directly drives a second driven gear ( ). Turning motion of the driven gears ( ) is imparted to stub shafts ( ), respectively, which carry coaxial drive gears ( ), respectively. The drive gears ( ) drive sector gears ( ), respectively, that are disengagably secured to the shafts ( ), respectively. The servo motor ( ) has dual windings; a first, higher speed/lower torque winding for operating the motion of the mold carrying arms during a first portion of their closing movements and during their opening movements, and a second, lower speed/higher torque winding for operating the motion of the mold carrying arms during a second portion of their closing movements.