Goss n90 printable wide and narrow newspaper transformation method and printable wide and narrow newspaper double width rotary machine

Abstract

The invention provides a transformation method of realizing printing narrow newspaper of a gauss N 90 double breadth rotary press. The printing requirement of supporting printing narrow breadth newspaper with larger size difference on the basis of reserving the printing of the original wide breadth newspaper by steps of cutting a triangular plate, finely adjusting a base station, amending displacement amount and modifying a main paper guide roll group, the cost of the transformation method is low, and consumed work hours are fewer; in addition, the invention also provides a double breadth rotary press capable for printing wide and narrow newspaper; compared with the common product, the double breadth rotary press adopts a novel triangular plate structure, a main paper guide roll group structure and a sufficient triangular plate horizontal displacement amount design, rapid adjustment is realized, and thus the printing requirement of the narrow breadth newspaper with larger size difference is realized.

Description

technical field [0001] The invention relates to the field of newspaper printing equipment, in particular to a reforming method of Goss N90 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 originated...

AI Technical Summary

Problems solved by technology

[0007] This is not the case for double-width rotary machines, especially the folding machine part of the equipment. Since there are two printing plates on the left and right on the same cylinder, the center line of the layout graphic and the center line of the printing plate and the folio paper The center line of the center line and the center line of the triangular plate do not coincide. Once the narrow newspaper printing is changed, problems will arise

In recent years, more and more newspaper offices have introduced double-width rotary machines. The purchase of new equipment will undoubtedly require a new large investment, and the original equipment can only be discarded, which is very wasteful. Therefore, how to achieve narrow newspapers on the existing double-width rotary machines Printing is one of the urgent problems in the industry

[0008] Goss N90 is a double-width rotary machine commonly used in the newspaper industry. Due to the special structure of its folding machine, it cannot meet the needs of narrow newspaper printing through simple adjustments, and there are many difficulties and difficulties in its transformation. The main reason is that it cannot meet the printing centering requirements—the main reason is that the adjustment stroke between the two sets of triangle mechanism of the folding machine is insufficient. The design movement of the fixed frame is only ±10mm, which cannot meet the printing movement requirements of narrow newspapers above 50mm

Furthermore, the lengths of the two threading rollers corresponding to each triangular plate in the main threading roller group 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 excessively shifted

[0009] 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

Images