Injection apparatus for injection molding machine

Details Injection apparatus for injection molding machine Injection apparatus for injection molding machine

1998-07-16

2000-05-09

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Feed control of material en route to shaping area

425574, B29C 4554

Patent

active

060595566

ABSTRACT:
An injection apparatus of an injection molding machine, for easy control of the charging motor and the injection motor and highly precise control of the back pressure of a screw thereby enabling performance of the proper charging operation, has an injection motor with a rotor adapted to act as a ball screw nut and which is secured to an injection carriage having mounted thereon a heating barrel of the injection apparatus. The injection motor has a shaft forming a ball screw in one end portion of the shaft connected to a screw of the injection molding machine. The ball screw is screwed into the rotor of the injection motor. The other end of the shaft forms a spline portion, and is connected to a charging motor that has a hollow drive shaft whose inside-diameter portion is spline-fitted onto the spline portion of the shaft.

REFERENCES:
patent: 5540495 (1996-07-01), Pickel
patent: 5645868 (1997-07-01), Reinhart

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