Method of removing stuck sprue and tool for removal therein
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United States of America Patent
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Aug 15, 1995
Issued Date -
N/A
app pub date -
Aug 26, 1994
filing date -
Dec 21, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved method of removing a stuck sprue from the ejector assembly of an injection molding machine and a tool for use in the method in which the tool has a body with a hollow lower portion having a bottom edge with peripherally spaced indentations, In the method, the tool is first heated to above the melting point of the molding material and the lower end is inserted into the stuck sprue. The tool is cooled to below the melting point of the molding material and then rocked back and forth to free the sprue from the ejector mechanism.
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