Modification method of Roland c75 printable wide and narrow newspapers and double-width rotary press capable of printing wide and narrow newspapers

Abstract

The invention discloses a transformation method of a Roland C75 printable wide and narrow newspaper, wherein the wide and narrow newspaper printing requirements with larger measurement discrepancy can be further supported by the steps of cutting a set square, expanding an adjusting slot on a base station, replacing an adjusting block, modifying the amount of movement and modifying a set of main paper injection rolls, on the basis of preserving the primary wide newspaper printing, and the transformation method is lower in cost and less in consumed working hours. Additionally, the invention provides a double width rotary press of the printable wide and the narrow newspaper, which is different from general products, and adopts a novel set square structure, a novel adjusting block structure, a novel main paper injection structure and the design of enough set square horizontal movement, so that the quick adjustment can be performed to support the wide and the narrow newspaper printing requirements with the larger measurement discrepancy.

Description

technical field [0001] The invention relates to the field of newspaper printing equipment, in particular to a method for transforming Roland C75 printable wide and narrow newspapers and a double-width rotary machine capable of printing wide and narrow newspapers. Background technique [0002] With the introduction of the national energy-saving and consumption-reducing policy, newspaper operators are also thinking about how to save energy and reduce consumption. In addition to reducing the layout of the newspaper, reducing the size of the newspaper format is also an important choice. In addition to being convenient for readers to read, it can save paper and achieve greater economic benefits. Overprinting, this practice is also called "newspaper slimming" ". [0003] For this reason, a new type of newspaper format was born. The printing area (core) of the newspaper is 38.5 cm x 24 cm, 49.5 cm x 30 cm, 48 cm x 31 cm or 52 cm x 32 cm. narrow newspaper". Narrow newspapers orig...

AI Technical Summary

Problems solved by technology

[0009] 1. Unable to meet the printing centering requirements - the main reason is that the adjustment stroke between the two triangle mechanisms of the folding machine is insufficient, specifically reflected in: the horizontal distance between the two triangles is too small to meet the printing needs of narrow newspapers; the location of the triangle is fixed The design movement of the frame is only ±10mm, which cannot meet the printing movement requirements of narrow newspapers above 50mm

Furthermore, in the main threading roller group, the lengths of the two threading rollers respectively corresponding to each triangular plate are fixed, and the adjustable range is very small. Unable to align with the center of the set square for printing jobs

Secondly, the width of the platen area of ​​the paper threading roller in the main threading roller group is limited, and it will be difficult to press the paper well after the triangular plate is shifted.

[0010] 2. The deviation of the connecting rod of the triangle plate is mainly due to the fact that the triangle plate is fixed on a fixed frame that can move horizontally, while the other end of the connecting rod connecting the triangle plate is fixed on the abutment. When the distance of the triangle plate moves horizontally is too large, it will cause Connecting rod transition deflection, or even damage

[0011] 3. Hooked paper damages the paper - because the first threading roller set under the triangular plate does not follow the movement when the triangular plate moves horizontally, so if the triangular plate moves too much, the paper passing through the olecranon of the triangular plate needs to be deflected at a large angle. Through the seventh paper delivery roller, when the angle is too large, the paper is easily broken by the slender olecranon, causing damage to the paper and failing to print products that meet the requirements

[0012] In addition, the incompatibility of the threading rollers to the paper is also a problem, which is mainly reflected in the first threading roller set, the second threading roller set and the third threading roller set corresponding to each triangle plate in the original folding machine The position setting of the traction wheel is only suitable for 1562mm paper printing, and there will be a problem of not being able to press the paper when printing narrow newspapers

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