Clamping device for film rolls
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United States of America Patent
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Apr 11, 2017
Issued Date -
N/A
app pub date -
Oct 28, 2013
filing date -
Oct 31, 2012
priority date (Note) -
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Abstract
A clamping device (1) for receiving and clamping a film roll (2) is described, comprising a winding core (21) and a film reel (22) arranged on the winding core (21), wherein the clamping device (1) can be moved from an open position, in which the film roll (2) can be inserted into the clamping device (1) or removed from the clamping device (1), into a clamping position, in which the film roll (2) is clamped in the clamping device (1). The clamping device (1) comprises a grooved shaft (11) with receiving grooves (11n) arranged in the longitudinal direction offset at the same angular distance, a screw gear formed from a ring nut (12) and a lock nut (14), and clamping levers (16) arranged radially offset at the same angular distance. An output member of the screw gear interacts with the clamping levers (16) such that, when the clamping device (1) is in the clamping position, the clamping levers (16) bear on the base of the grooves (11n) of the grooved shaft (11) and on the inner wall of the winding core (21), forming a clamping force.
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