Mold clamping apparatus
AssigneePechiney Emballage Flexible Europe
InventorsRichard Nightingale, Jeffrey Janssen
Life of this patent
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Abstract
A blow molding apparatus having a mold clamping apparatus of the clam shell type, and having a linkage controlling the opening and closing of the mold, the linkage being comprised of two links pivotally connected to each other and driven by a pneumatic or hydraulic cylinder. The links are configured to provide the cylinder with mechanical advantage so that little mold separation force is recognized at the cylinder.
Claims20
A blow molding apparatus comprising:
- a mold clamp having a first mold clamp member for holding a first mold member and a second mold clamp member for holding a second mold member, the first mold clamp member being rotatably secured to the second mold clamp member;
- and
- a mold clamp drive apparatus for rotating the first mold clamp member, the mold clamp drive apparatus having,
- a linkage comprising a first link having a first end pivotally secured relative to the first mold clamp member, and a second link pivotally secured to the first link, and
- a drive coupled to the linkage.
A mold clamp drive apparatus for a blow molding apparatus of the type comprising a clam shell type mold clamp having first mold clamp member for holding a first mold member and a second mold clamp member for holding a second mold member, the first mold clamp member rotatably secured to the second mold clamp member to engage and separate the first and second mold members, the mold clamp drive apparatus comprising:
- a linkage comprising a first link having a first end for being rotatably secured relative to the mold clamp second member, and a second link having a first end for being rotatably secured relative to the mold clamp first member, a second end of the first link being pivotally secured to a second end of the second link;
- and
- a drive coupled to the linkage and configured to move the second ends of the first and second links.
An extrusion blow molding apparatus comprising:
- a wheel configured to rotate about a rotational axis, having a plurality of mold disposed about the rotational axis
- a mold clamp having a first mold clamp member and a second mold clamp member, the first mold clamp member being rotatably secured to the second mold clamp member;
- and
- a mold clamp drive apparatus for controlling the first mold clamp member, the mold clamp drive apparatus having,
- a linkage comprising a first link having a first end pivotally secured relative to the first mold clamp member, and a second link pivotally secured to the first link, and
- a drive coupled to the linkage.
Dependencies are inferred from the claim text.