Extrusion blow mold system
OwnerJames Vassarinventor
Life of this patent
Estimating the term…
Abstract
A mold unit has first and second parts, each with a plurality of cooperating cavity portions. The mold unit further has similarly interconnected third and fourth mold parts. An operating system moves the mold parts to change the mold unit between first and second states. The first and third mold parts meet at a fixed, first parting line to define a first plurality of mold cavities, and the second and third mold parts meet at a fixed, second parting line to define a second plurality of cavities with the mold unit in the first state. In the second state, molded products formed from the parisons can be released from their cavities.
Claims20
An extrusion blow mold system comprising:
- a first mold part having a first plurality of cavity portions;
- a second mold part having a second plurality of cavity portions,
- the first mold part and second mold part interconnected to move as one piece in opposite directions in a first travel path;
- a third mold part having a third plurality of cavity portions;
- a fourth mold part having a fourth plurality of cavity portions,
- the third mold part and fourth mold part interconnected to move as one piece in opposite directions in a second travel path,
- the first, second, third and fourth mold parts together making up a first mold unit;
- and
- an operating system for the first mold unit through which the mold parts are moved in their respective travel paths to thereby change the first mold unit between first and second states,
- the first and third mold parts meeting at a first parting line so that the cavity portions in the first plurality of cavity portions align one each with the cavity portions in the third plurality of cavity portions to define a first plurality of cavities, each to receive a parison with the first mold unit in the first state,
- the second and third mold parts meeting at a second parting line so that the cavity portions in the second plurality of cavity portions align one each with the cavity portions in the fourth plurality of cavity portions to define a second plurality of cavities, each to receive a parison, with the first mold unit in the first state,
- the mold parts relatively positioned through the operating system to place the first mold unit in the second state to allow molded products formed from the parisons to be released from their respective cavities.
Dependencies are inferred from the claim text.