Cylinder drive
AssigneeKoenig & Bauer Aktiengesellschaft
InventorsJohannes Georg Schaede, Elmar Johannes Anton Tober, Bernd Kurt Masuch
Life of this patent
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Abstract
A cylinder drive for a rotary printing press uses bearing rings that are in contact with each other. A friction torque that is produced during the printing process, as a material passes between the cylinder which carry the bearing rings, is approximately compensated by an additional friction torque caused by the cooperating bearing rings.
Claims35
A cylinder drive for cylinders of a rotary printing press comprising:
- first and second cooperating cylinders;
- first bearing rings on said first cylinder, said first bearing rings having a first radius;
- second bearing rings on said second cylinder, said second bearing rings having a second radius, said first and second bearing rings being in contact;
- a ratio between said first radius and a whole number multiple of said second radius, said ratio being greater that 1.0001 and less than 1.02;
- a first angular position controlled drive motor for said first cylinder;
- and
- a second angular position controlled drive motor for said second cylinder.
A drive mechanism for cylinders of a rotary printing press comprising:
- first and second cooperating cylinders;
- a first friction gear with a first gear ratio associated with said first cylinder;
- a second friction gear with a second gear ratio associated with said second cylinder, said first friction gear generating a first friction torque and said second friction gear generating a second friction torque during printing of a material by said first and second cooperating cylinders, said first gear ratio being the reverse of said second gear ratio, said first friction torque being compensated by said second friction torque.
A drive mechanism for cylinders of a rotary printing press comprising:
- first and second cooperating cylinders;
- first bearing rings on said first cylinder;
- second bearing rings on said second cylinder;
- a normal force between associated ones of said first and second bearing rings which roll on each other;
- and
- means for changing said normal force as a function of one of a detected output of a drive motor of one of a said first and second cylinders and a detected torque acting on one of said first and second cylinders.
A drive mechanism for cylinders of a rotary printing press comprising:
- first and second cooperating cylinders;
- a first friction gear associated with said first cylinder;
- a second friction gear associated with said second cylinder, said first and second friction gears accomplishing a torque transmission between said first and second cooperating cylinders;
- a normal force between said first and second friction gears;
- and
- means for changing said normal force as a function of one of a detected output of a drive motor of one of said first and second cylinders and a detected torque acting on one of said first and second cylinders.
Dependencies are inferred from the claim text.