Electric drive for blow molding head
OwnerRobert O. Hayesinventor
Life of this patent
Estimating the term…
Abstract
An electric drive for controlling the die gap in a continuous blow molding head and the die gap and pushout in an accumulator blow molding head. The electric drive includes a programming screw for attachment to a programming rod for setting the die gap, a programming nut and an electric motor for rotating the programming nut. In an accumulator blow molding head, the electric drive further includes a shooting screw for attachment to a shooting rod for controlling pushout, a shooting nut and an electric motor for rotating the shooting nut. The programming screw and the shooting screw are coaxial with the programming rod passing through the shooting screw.
Claims9
An electric drive for a blow molding head having a tooling set including a programming rod for setting a die gap, said electric drive comprising:
- a programming roller screw adapted for straight line attachment to a programming rod distal a die gap;
- a programming roller nut threaded on the programming roller screw, said programming roller nut fixed with respect to the die gap and supported in a programming roller nut housing on a paired row of tapered roller bearings, positioned back to back on opposite ends of the programming roller nut;
- and,
- an electric motor coupled in direct rotary relationship to the programming roller nut whereby rotation of the programming roller nut causes rectilinear movement of the programming roller screw in a direction depending on the direction in which the programming roller nut is rotated for use in setting the die gap.
An electric drive for an accumulator blow molding head having a tooling set including a programming rod for setting a die gap and a plunger mounted on a shooting rod for controlling pushout comprising:
- a programming screw adapted for straight line attachment to a programming rod distal a die gap;
- a programming nut threaded on the programming screw, said nut fixed with respect to the die gap;
- a first electric motor coupled in direct rotary relationship to the programming nut whereby rotation of the programming nut causes rectilinear movement of the programming screw in a direction depending on the direction in which the programming nut is rotated to set the die gap;
- a shooting screw adapted for straight line attachment to a shooting rod for reciprocating a plunger, said programming screw and said shooting screw being coaxial and the programming rod passing through the shooting screw;
- a shooting nut threaded on the shooting screw, said nut fixed with respect to the die gap;
- a second electric motor coupled in direct rotary relationship to the shooting nut whereby rotation of the shooting nut causes rectilinear movement of the shooting screw in a direction depending on the direction in which the shooting nut is rotated to control pushout.
Dependencies are inferred from the claim text.