Support for an intermediate platen of a stack mold
AssigneeHusky Injection Molding Systems Ltd.
InventorPaul Brown
Life of this patent
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Abstract
An intermediate platen carrying two inner plates of a stack mold, coacting with two outer plates respectively mounted on a stationary and a movable platen of an injection-molding machine which are interconnected by a set of four tie bars, has a pair of forwardly extending and a pair of rearwardly extending outrigger arms terminating in respective shoes which slide on two of the tie bars, preferably the lower ones.
Claims6
In an injection-molding machine with two upper and two lower horizontal tie bars extending between a stationary outer platen and a fixed support mounted on a machine bed, a movable outer platen slidable along said tie bars, a first mold plate on said stationary platen confronting said movable platen, a second mold plate on said movable platen confronting said stationary platen, and a pair of further mold plates carried on an intermediate platen between said outer platens subjected to correlated displacement with said movable platen between a mold-closed and a mold-open position,
- the improvement wherein said intermediate platen is provided with two pairs of outrigger arms extending in opposite directions generally parallel to said tie bars, each outrigger arm terminating in a respective part-cylindrical shoe slidably engaging one of said tie bars at a location between said intermediate platen and one of said outer platens.
Dependencies are inferred from the claim text.