Device for closing and opening the mold halves of a glass molding machine

A device for closing and opening mold halves of at least one mold of a glass forming machine, comprising:

• a mold half holding mechanism for each of said mold halves;
• a glass forming machine frame;
• a drive for effecting the opening and closing of said mold halves;
• a spindle mounted in an axially fixed manner, said spindle being drivable rotatably in a reciprocating manner by said drive;
• a nut in engagement with said spindle for linear reciprocal movement in response to rotational movement of said spindle;
• a drive element having a longitudinal axis, said drive element being mounted on said nut for reciprocal linear movement in response to movement of said nut;
• a guide device disposed to prevent rotational movement of said drive element about said longitudinal axis;
• a drive shaft mounted for reciprocal pivotal movement in response to movement of said drive element, said drive shaft being movable in response to movement of said drive element through intermediate members which include a lever affixed to said drive shaft;
• and
• each of said mold halves being associated with a vertical shaft, each of said vertical shafts being connected via a lever mechanism to said drive shaft, said vertical shafts being mounted in said frame for rotational movement in response to movement by said drive shaft, each of said mold half holding mechanisms being pivotal in a reciprocal manner in response to movement of said vertical shaft associated therewith.

A device for closing and opening mold halves of at least one mold of a glass forming machine, comprising:

• a mold half holding mechanism for each of said mold halves;
• a glass forming machine frame;
• a drive for effecting the opening and closing of said mold halves;
• a spindle mounted in an axially fixed manner, said spindle being drivable rotatably in a reciprocal manner by said drive;
• a nut in engagement with said spindle for linear reciprocal movement in response to rotational movement of said spindle;
• a drive element affixed to said nut for reciprocal linear movement in response to movement of said nut, said drive element having a longitudinal axis and a first side which is fixed to said nut, said first side including an opening extending therein, said spindle having a free end disposed within said opening, and said drive element having a second side remote from said first side which is mounted in an axially displaceable manner in a bearing housing supported on said frame;
• a guide device disposed to prevent rotational movement of said drive element;
• a drive shaft mounted for reciprocal pivotal movement in response to movement of said drive element, said second side of said drive element being connected to said drive shaft via intermediate members which include a lever affixed to said drive shaft for rotational movement therewith;
• and
• each of said mold halves being associated with a vertical shaft connected via a lever mechanism to said drive shaft, said vertical shafts being mounted in said frame for rotational movement in response to movement by said drive shaft, each of said mold half holding mechanisms being pivotal in a reciprocal manner in response to movement of said vertical shaft associated therewith.