Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With means to close mold
Patent
1991-03-11
1992-07-14
Heitbrink, Tim
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With means to close mold
425519, 425590, 425595, B29C 4568
Patent
active
051298171
ABSTRACT:
The present invention relates to improved gripper bushing assemblies for use with injection molds, molding machines and other devices. In a first embodiment, the gripper bushing assemblies include an elongated flexible gripping sleeve positioned about a column member such as a tiebar. The sleeve is secured to a member such as a moving platen and is used to clamp the platen to the tiebar in a desired location. The gripper bushing assemblies further include one or more spacers intermediate the sleeve and the platen. The spacers engage the sleeve via a mechanical interlock. The sleeve and spacer(s) are capable of accommodating tiebar stretching which may occur as a result of clamping forces being applied to the mold via the platen. In a second embodiment, the spacer(s) are omitted and the gripping sleeve has a male thread which engages a female thread on the platen.
REFERENCES:
patent: 2691799 (1954-10-01), Moeller
patent: 3183555 (1965-05-01), Siegel
patent: 3420144 (1969-01-01), Berry
patent: 3938362 (1976-02-01), Falk et al.
patent: 3995534 (1976-12-01), Rastetter
patent: 4264229 (1981-04-01), Falk et al.
patent: 4509910 (1985-04-01), Petersen
patent: 4693448 (1987-09-01), Proksa et al.
Ing Ronald
Schad Robert D.
Heitbrink Tim
Husky Injection Molding Systems Ltd.
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