Vertical trim press and stacking apparatus and method of trimming and stacking articles
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United States of America Patent
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-
Oct 5, 1993
Grant Date -
N/A
app pub date -
Feb 15, 1991
filing date -
Feb 15, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Apparatus and method for severing and stacking articles which have been differentially pressure formed in a sheet of thermoplastic material from the sheet. Apparatus is provided for moving the sheet in a horizontal path and relatively vertically moving opposed upper and lower trim dies into engagement with vertically opposite sides of the sheet to trim the articles from the sheet at a trim station. The articles free fall through an opening in the lower die and free fall to an underlying accumulator. The accumulator includes mechanism which is moveable from a stack forming position in the path of freely falling articles to receive and accumulate freely falling severed articles in a stack, and a releasing position in which a formed the stack is released for vertical free fall. Mechanism is provided for accumulating additional severed articles at a higher predetermined vertical level until the released stack vertically clears the stacking station and then releasing the partial stack for free-fall to the stacking station at which another stack is completed.
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