Printing press cylinder coupling method and apparatus
AssigneeKoenig & Bauer-Albert Aktiengesellschaft
InventorHans Dierk Mohrmann
Life of this patent
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Abstract
A cylinder in a rotary printing press is coupled to a driving wheel or gear by the engagement of two coupling disks. One of the disks is shiftable into coupling engagement with the other disk by application of a pressure medium to a work cylinder. A control valve is carried by the shiftable disk and limits the force of the pressure medium by use of a bleed passage that is closed only when coupling has been accomplished. The force of the pressure medium is at a higher level when coupling has been fully completed.
Claims12
A method for coupling a cylinder of a rotary printing press to a toothed driving wheel including:
- providing a cylinder coupling disk secured to a journal of the cylinder;
- providing a driving wheel coupling disk secured to the driving wheel;
- utilizing a work cylinder that is chargeable with a pressure medium and shifting one of said disks toward the other of said disks by applying the pressure medium to said work cylinder to effect said coupling;
- charging said work cylinder with the pressure medium at a first pressure during said shifting, and at a second pressure when said coupling is fully engaged;
- and
- adjusting the pressure of said pressure medium to render said first pressure less than said second pressure.
A printing press cylinder coupling device for coupling a cylinder to a toothed driving wheel comprising:
- a toothed drive wheel;
- a cylinder journal extending from the cylinder;
- a cylinder coupling disk attached to said cylinder journal;
- a driving wheel coupling disk attached to the toothed driving wheel;
- means for shifting one of said coupling disks toward and away from the other of said coupling disks;
- a work cylinder chargeable by a pressure medium and operable to shift said one coupling disk toward said other coupling disk;
- a control valve carried by said one of said coupling disks, said control valve receiving the pressure medium from said work cylinder;
- and
- means for controlling the pressure medium in said work cylinder during coupling engagement between said disks and when said disks are engaged whereby a coupling engagement pressure of the pressure medium in said work cylinder is less than a coupling engaged pressure of the pressure medium in said work cylinder.
Dependencies are inferred from the claim text.