Driving apparatus for electrically-operated injection molding machine

An electrically-operated injection molding machine, comprising:

• a clamping mechanism;
• an ejection mechanism;
• an injection mechanism;
• and
• a nozzle touch mechanism,
• wherein said clamping mechanism includes a stationary platen, a rear platen connected to said stationary platen via tie bars, a movable platen slidably supported on said tie bars, a link mechanism connecting the rear platen with the movable platen, a cross-head connected between two sides of the link mechanism, and a motor formed on said cross-head and internal to said rear platen,
• whereby both width and height of the injection molding machine are reduced by positioning the motor internally to said rear platen.

An electrically-operated injection molding machine, comprising:

• a clamping mechanism;
• an ejection mechanism;
• an injection mechanism;
• and
• a nozzle touch mechanism,
• wherein said ejection mechanism includes an ejection unit, a movable platen, guide rods attached to said ejection unit and an internal surface of said movable platen, a motor attached to an internal surface of said ejection unit, and a ball nut fixed to said movable platen,
• whereby both width and height of the injection molding machine are reduced by positioning the motor internally to said ejection unit.

An electrically-operated injection molding machine, comprising:

• a clamping mechanism;
• an ejection mechanism;
• an injection mechanism;
• and
• a nozzle touch mechanism,
• wherein said injection mechanism includes a screw pressure plate, an extruder base, and an electric motor, having a rotor shaft on which a ball screw is integrally formed, disposed on said pressure plate and between said pressure plate and said extruder base,
• whereby both width and height of the injection molding machine are reduced by positioning the motor between said pressure plate and said extruder base.

An electrically-operated injection molding machine, comprising:

• a clamping mechanism;
• an ejection mechanism;
• an injection mechanism;
• and
• a nozzle touch mechanism,
• wherein said nozzle touch mechanism includes an extruder base, the injection mechanism, a base pressure plate pushing a pulling plate of the extruder base, and a coil spring interposed between said pulling plate and said base pressure plate.