Thermoforming machine having toggle differential load mechanism and method
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United States of America Patent
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Jan 9, 2024
Grant Date -
Oct 31, 2019
app pub date -
Dec 10, 2018
filing date -
Apr 25, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
A thermoforming apparatus is provided having a frame, a pair of platens, and a platen drive assembly. The platens are carried by the frame on opposite sides of a sheet line each configured to carry a respective die. One platen has a proximal die surface adjacent the sheet line and a rear surface distal the sheet line. The platen drive assembly is interposed between the frame and the one platen and has at least one reciprocating kinematic linkage and a drive motor configured to reciprocate the one platen to and fro relative to another platen. The kinematic linkage has a plurality of links interconnected pivotally together with respective rotation joints and interposed between the frame and the one platen. An outboard-most rotation joint is provided proximate one end of the frame and an inboard-most rotation joint intermediate the rear surface and the proximal die surface. A method is also provided.
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