Ram Support skate for an injection molding machine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 11, 2001
Grant Date -
N/A
app pub date -
Oct 4, 1999
filing date -
May 16, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A self-compensating support skate (46) for an annular hydraulic ram (15) mounted in the front stationary platen (10) of a 'two-platen' injection molding machine (1) is disclosed. The hydraulic ram (15) fits into a central bore (22) in the stationary platen (10) and connects directly to a relatively thin die platen (11) that provides a mold mounting surface. The purpose of the skate (46) is to prevent movement (tilting) of the die platen (11) and the resulting misalignment with the movable platen (20) when the mold (30) is attached. The skate (46) is adjusted during assembly to compensate for the tolerance stack-up in the ram assembly. The 'zero' clearance is maintained by disc springs (56) within the skate (46) that compensate for the expansions and contractions of the large diameter parts due to temperature variations. The die platen (11) is held in the aligned position by contact with the lower tie rods (7).
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