Device for preloading a torque loaded mechanism on a folding cylinder
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jul 20, 1999
Grant Date -
N/A
app pub date -
May 30, 1996
filing date -
May 30, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A cylinder in a folding apparatus includes a plurality of product seizing devices. Each product seizing device includes a cam and a shaft having a plurality of product seizing devices attached thereto. A cam follower is mounted to the shaft and a torsion bar is coupled to the cam follower. A torque preloading element for applying a preloaded torque to the torsion bar is provided which maintains the cam follower in contact with the cam. Finally, mechanism for incrementally adjusting and maintaining the preloaded torque on the torsion bar is provided. A variety of mechanisms for incrementally adjusting the preloaded torque are possible. For example, the mechanism may include a first facial toothing on an interior face of the torque preloading element and a second facial toothing on an exterior face of an opposing element. The opposing element is mounted to a work side end of the cylinder and the first facial toothing engages the second facial toothing. The preloaded torque on the torsion bar is incrementally adjusted by relative movement between the first and second facial toothings.
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