Printing machine provided with plate cylinder driving device
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United States of America Patent
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Jun 29, 2021
Grant Date -
Jul 11, 2019
app pub date -
Jun 15, 2017
filing date -
Jul 4, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
Plate cylinder driving devices of a printing machine are provided with a drive shaft driving the plate cylinder, a drive helical gear fixed to the drive shaft, and an anti-backlash helical gear rotatably connected to the drive shaft and is biased by at least a spring towards a direction for preventing backlash. Both the drive helical gear and the anti-backlash helical gear are engaged with the main gear, and a plate provided with plural holes accommodating rollers is provided between the drive helical gear and the anti-backlash helical gear. Friction between the anti-backlash gear and the drive gear is reduced by a simple mechanism in the plate cylinder driving devices in a printing machine.
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