SU1505799A1 - Drive arrangement for multisection rotary press - Google Patents

Abstract

The invention relates primarily to the printing machinery industry and can be used, for example, in rotary sectional printing presses for driving sequential printed sections. The purpose of the invention is to increase the reliability of work. In a device containing a common drive shaft, sectional gears for driving the actuators of the machine sections, chains of gear wheels interconnecting the sectional gears with each other, and worm gears installed on the common drive shaft for transmitting the movement of the sectional gears is only one of the screws are fixed on the common drive shaft against axial movement, and the rest are mounted on the drive shaft with the possibility of axial movement and are spring-loaded in this direction. The device has a means of adjusting the position of the screws. The number of screws is equal to the number of sections, and each of the screws is associated with a gear of the same name of each respective section. 1 il.

Description

The invention relates primarily to the printing machinery industry and can be used, for example, in rotary sectional printing presses for driving sequential printed sections.

The purpose of the invention is to increase the reliability of the device.

The drawing shows a diagram of the device drive sectional printing machine.

The device consists of a common drive shaft 1, gears 2-4 and 5-7 sectional gears

adjacent printing units (other {sectional gears are not shown, a chain of gears 8-10, connecting sectional gears with each other, and screws 11 and 12 mounted on a common drive shaft 1, the first of which is fixed to the shaft from axial movement and interacts with the worm gear 13, rigidly connected with the gear wheel 2, and the second mode, tirovat on the shaft with the possibility of axial movement (for example, on the sliding key or splines), interacts with the worm gear 14, rigidly

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a single spring and axially spring-loaded spring 15. The force of the spring can be controlled by some means of adjusting the position of the free end of the spring 15, for example by a ring 16 controlled by a lever 17 which can be controlled by any of the known methods ( mechanical, electric, pneumohydraulic, etc.) and provides a change in the driving torque (for example, depending on the speed of the machine, from the angle of its rotation).

The device works as follows.

When the drive shaft 1 is rotated, the worm is rigidly fixed on it and transmits the rotation to the worm wheel to the driving gears 3, A and other wheels of sectional gears (not shown), for example, to the first section. Gear 2, through a chain of gears 8-10, transmits rotation to gears 5-7 and other wheels of sectional gears (not shown), for example, the second printing unit, as well as the worm wheel 14. At the same time, the worm wheel 14 is driven into motion from the second screw 12, which, displaced along the shaft 1 under the action of the spring 15, transmits the worm wheel 14 a torque equal to the product of the force of the spring 15 by the radius of the dividing circle of the worm wheel 14. If necessary spring force 15 and.

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If there are more than two sections in the machine and the corresponding number of drive worm pairs, only one (any) of the drive screws is mounted on the drive shaft fixedly, similarly to the screw 11, and the rest are spring loaded similarly to the screw 12 and interact with the worm wheels , located (each in its section) on identical shafts (when placed on shafts with different directions of rotation, it will be necessary to change the direction of cutting of the worm pair and the spring force).

The technical and economic effect of using the device consists in increasing the reliability of the machine drive, maintaining complete unification of the drive of the printing units and ensuring that the force is controlled by sampling gaps on the machine’s run, if automatic force control is needed, for example, depending on the machine speed or the cycle angle.

Claims (1)

Invention Formula A drive device for a multi-section rotary press that contains sectional gears to drive the executive bodies of the machine sections, chains of gears, interconnecting sectional gears of two adjacent sections, and mounted on a common drive shaft consequently, the torque, the forward movement of the sectional gear, transmitted by the second section by the worm gear, can be adjusted by turning the lever 17. The torque transmitted along the chain of gears 2, 8, 9, 10, 5 is equal to the algebraic 45 difference of the torque, communicated by the worm-wheel 14 to the worm 12, and the static torque of the resistance of the second printing unit. This difference determines the magnitude of the force of the elastic selection of gaps in engagement with each other of the driving gears 2, 8, 9, 10, 5. 50 five 0 Cham, at least one of which is mounted with the possibility of axial movement and is associated with means of adjusting its position, characterized in that, in order to increase the reliability of the device, one of the screws is fixed on the drive shaft from axial movement, while the number of hearts The forks are equal to the number of sections, each of which is associated with the same gear wheel of each respective section. / //