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US 6,749,419 B2Granted
Mold clamping apparatus
AssigneePechiney Emballage Flexible Europe
InventorsRichard Nightingale, Jeffrey Janssen
Life of this patent
Estimating the term…
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 configured to hold a first mold member and a second mold clamp member configured to hold a second mold member, the first mold clamp member being rotatably secured to the second mold clamp member;
- a disk on which the second mold clamp member is selectively secured;
- and
- a mold clamp drive apparatus the mold clamp drive apparatus capable of 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 and secured to the second mold clamp member, but not secured to the disk.
3 more elements
A mold clamp apparatus for a blow molding apparatus comprising:
- a mold clamp having a first mold clamp member accommodating a first mold member and a second mold clamp member accommodating 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;
- a mold clamp drive apparatus comprising a linkage comprising a first link having a first end rotatably secured relative to the mold clamp second member, a second link having a first end 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 to either the first or second mold clamp member, the drive being configured to move the second ends of the first and second links,
- wherein the mold damn apparatus may constitute a discrete subassembly on a blow molding apparatus to facilitate repositioning of the mold damn apparatus with respect to the blow molding apparatus.
An extrusion blow molding apparatus comprising:
- a wheel configured to rotate about a 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 and secured to the second mold clamp member.
3 more elements
Dependencies are inferred from the claim text.