Extrusion blow mold system

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 fourth 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,
• wherein there is a plurality of guide bars that each extends through the third mold part and partially through each of the first and second mold parts,
• wherein the first mold part has oppositely facing first and second surfaces and the second mold part has oppositely facing third and fourth surfaces, the first plurality of cavity portions formed at the second surface and the second plurality of cavity portions formed at the fourth surface,
• wherein a first guide bar in the plurality of guide bars has spaced ends and one of the spaced ends is directed through the second surface into the first mold part,
• wherein at least one fastener is directed through the first surface and into the one spaced end of the first guide bar and the other of the spaced ends is directed through the fourth surface into the second mold part,
• wherein at least one fastener is directed through the third surface into the other of the spaced ends.

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 fourth 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,
• wherein a force applying mechanism acts between the second and third mold parts to urge the second and third mold parts away from each other and thereby urge the second mold part against the fourth mold part and the third mold part against the first mold part with the first mold unit in the first state,
• wherein the force applying mechanism comprises first and second blocks provided one each on the second and third mold parts with at least one rod extending between each of the first and second blocks.

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 fourth 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,
• wherein there is a plurality of guide bars that each extends through the third mold part and partially through each of the first and second mold parts,
• wherein the first mold part has oppositely facing first and second surfaces and the second mold part has oppositely facing third and fourth surfaces,
• wherein the first plurality of cavity portions is formed at the second surface and the second plurality of cavity portions is formed at the fourth surface,
• wherein an inset wear insert defines a part of one of the second and fourth surfaces,
• wherein a first guide bar in the plurality of guide bars has spaced ends and one of the spaced ends is directed into the inset wear insert,
• wherein at least one fastener is directed through the inset wear insert into the one spaced end of the first guide bar.

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:
• a) the first and second mold parts are moved guidingly relative to the third and fourth mold parts in the first travel path;
• and b) the third and fourth mold parts are moved guidingly relative to the first and second mold parts in the second travel path 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 fourth 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,
• wherein the first plurality of cavities has a top and bottom and there is no structure extending between the first and third mold parts above the bottom of the first plurality of cavities.

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:
• a) the first and second mold parts are moved guidingly relative to the third and fourth mold parts in the first travel path;
• and b) the third and fourth mold parts are moved guidingly relative to the first and second mold parts in the second travel path 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 fourth 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,
• wherein the first and fourth mold parts have oppositely facing surfaces and further comprising first and second clamp parts that respectively engage the oppositely facing surfaces on the first and fourth mold parts and are movable towards and away from each other to change the state of the first mold unit, the first and second clamp parts respectively engaging substantial areas of the oppositely facing surfaces on the third and fourth mold parts.