US 7,514,895 B2 · Method and device for synchronously controlling multiple printing presses or multiple units in printing press

Abstract

A method and a device for synchronously controlling multiple printing presses or multiple units in a printing press can reduce power consumption and improve durability of motors and motor bearings. A synchronous control device for multiple printing presses includes machine shafts of a main printing press and a sub printing press respectively provided with drive motors and is configured to synchronously control rotation of the sub printing press with respect to rotation of the main printing press. Here, drive motor brakes are attached to the respective drive motors, and drive control devices respectively configured to release synchronous control of the drive motor of the sub printing press by a stop instruction and to start the drive motor brakes of both of the printing presses are provided.

Claims18

Dependent claims

A method of synchronously controlling any of multiple printing presses or any of multiple units in a printing press, in which any of the multiple printing presses or the multiple units in the printing press are respectively provided with drive motors and rotation of at least one drive motor among the plurality of drive motors is synchronously controlled,

wherein braking means for braking the rotation of at least one of the drive motors among the plurality of drive motors is provided, and
wherein speed detecting means for detecting a rotation speed of the drive motor provided with the braking means is provided,
the method comprising:
starting deceleration of drive speeds of the plurality of drive motors by the stop instruction while performing the synchronous control;
and
releasing the synchronous control of the drive motor provided with the braking means and starting the braking means when the rotation speed detected by the speed detecting means becomes equal to or slower than a predetermined rotation speed.

3 more elements

A device for synchronously controlling any of multiple printing presses or any of multiple units in a printing press, in which any of the multiple printing presses or the multiple units in the printing press are respectively provided with drive motors and rotation of at least one of the drive motors among the plurality of drive motors is synchronously controlled, the device comprising:

braking means for braking the rotation of at least one of the drive motors among the plurality of drive motors;
speed detecting means for detecting a rotation speed of a said drive motor provided with the braking means;
and
controlling means for releasing synchronous control of the drive motor provided with the braking means by a stop instruction and starting the braking means;
wherein the controlling means starts deceleration of drive speeds of the plurality of drive motors by the stop instruction while performing the synchronous control, and when the rotation speed detected by the speed detecting means becomes equal to or slower than a predetermined rotation speed, the controlling means releases the synchronous control of the drive motor provided with the braking means, and starts the braking means.

2 more elements

Dependencies are inferred from the claim text.

Method and device for synchronously controlling multiple printing presses or multiple units in printing press

Life of this patent

Method and device for synchronously controlling multiple printing presses or multiple units in printing press

Life of this patent

Abstract

Claims18