Position with limited torque transmission in one drive direction and release in the opposite drive direction
AssigneeShinohara Machinery Co., Ltd.
InventorMasayuki Iwamoto
Life of this patent
Estimating the term…
Abstract
A coupling structure for a reversing mechanism of a printing press, having a fixed gear (18), a pivotable regulating gear (20), and a plurality of parallel tightening bolts (30) extending in a regularly spaced manner around a cylinder shaft (12) of the reversing mechanism. A one-way clutch (54) transmits limited tightening torque to the bolts (30) to hold gears (18) and (20) together in an engaged state, whereas in a release state, the bolts (30) are freely loosened. A center gear 56 having an internal gear (62) transmits torque to the one-way clutch from an external drive motor (80).
Claims11
A coupling structure mounted on a shaft of a reversing cylinder of a reversing mechanism comprising:
- a fixed gear fixedly secured relative to said shaft of said reversing cylinder and connected in driving relation with a downstream driving gear,
- a regulating gear pivotable around said shaft of said reversing cylinder in parallel relation to said fixed gear and connected with an upstream driving gear,
- a plurality of keep plates mounted around said shaft of said reversing cylinder to selectively press said regulating gear against said fixed gear,
- a plurality of tightening bolts acting in respective said keep plates,
- a drive gear to drive the tightening bolts in one turning direction to cause the keep plates to press the regulating gear against the fixed gear and thereby couple the regulating gear and the fixed gear in driving relation, and to drive the tightening bolts in an opposite turning direction to release the keep plates and the driving relation of the regulating gear and the fixed gear,
- a one-way clutch assembly acting between the drive gear and the tightening bolts to transmit torque from the drive gear to the tightening bolts up to a limit value of torque in said one turning direction, and
- a drive unit connected to said drive gear to drive said drive gear in two opposite directions.
Dependencies are inferred from the claim text.