Device for automatically adjusting dynamic balance of exposure roller

Abstract

The invention relates to a device for automatically adjusting dynamic balance of an exposure roller. The device comprises a movable clamp bar for clamping the rear edge of a printing plate on the drum surface of the exposure roller; a connecting plate rotationally connected with a rotating shaft of the exposure roller is arranged on the end surface of the exposure roller; one end of the connecting plate is fixedly connected with the movable clamp bar, and a quality unit is arranged at the other end of the connecting plate; an adjustable positioning mechanism is arranged between the connectingplate and the rotating shaft of the exposure roller. The connecting plate, the movable clamp bar and the quality unit are integrated and always keep the dynamic balance relative to the rotating shaftof the exposure roller, so as to avoid errors caused by adjustment to the movable clamp bar, thereby ensuring the quality of the printing plate. Through the adjustable positioning mechanism, the movable clamp bar in a whole can be adjusted relative to the exposure roller, so as to suit printing plates with different plate amplitudes and always ensure that the connecting plate, the movable clamp bar and the quality unit are in a balanced state during adjustment process, without re-calculating or re-adjusting the mass unit, thereby improving the stability of a system, and reducing the influenceof the errors of the dynamic balance of the system to the printing plate.

Description

【Technical Field】 [0001] The invention relates to a computer-to-plate-making device, and more specifically, to an automatic adjustment device for the dynamic balance of an exposure roller in a computer-to-plate-making device. 【Background technique】 [0002] In computer-to-plate equipment, a light source is usually used to focus on the printing plate, and the printing plate is scanned point by line with the aid of a scanning system. With each scan of the printing plate, multiple lines of image lines are exposed at the same time. The printing plate is usually set on a cylindrical cylinder or on a flat surface. [0003] For external drum plate making equipment, the printing plate is usually fixed on the drum surface of the cylindrical exposure drum. The front edge of the printing plate is generally clamped by a fixed plate clamp fixed on the drum, and the rear edge of the printing plate is moved The plate clamp is fixed. Since printing plates of different specifications have differe...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a new dynamic unbalance that can automatically balance the displacement of the movable plate holder in view of the defect that the movable plate holder is prone to displacement deviation when the exposure cylinder rotates at high speed in the prior art. The change of mass distribution caused by the deviation, so that the exposure roller reaches the dynamic balance of the automatic adjustment device of the exposure roller dynamic balance

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