Clamping unit with a platen hydrostatically supported on a frame element
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United States of America Patent
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-
Jul 15, 2008
Grant Date -
Jun 7, 2007
app pub date -
Feb 9, 2007
filing date -
Aug 19, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A clamping unit, particularly for an injection molding machine, includes at least one moving platen which is moveably arranged on a frame element. At least one hydrostatic support is provided in an area between the platen and the frame element for facilitating back and forth displacement of the moving platen to thereby avoid speed-dependent friction values. Operation of the clamping unit is realized by building up pressure in a hydrostatic support before the moving platen is initiated for displacement so that the moving plate is slightly raises platen in relation to the frame element. After displacement of the moving platen, the pressure in the hydrostatic support is decreased again.
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