Overturning mechanism of single-sheet printing product and working method of overturning mechanism

Abstract

The invention provides an overturning mechanism of a single-sheet printing product, comprising an upper right-side guide wheel, a tensioning wheel, a belt, an upper left-side guide wheel, a lower left-side guide wheel, power guide wheels, a power wheel, a lower right-side guide wheel and a printing product, wherein the belt is sequentially wound around one power guide wheel, the lower left-side guide wheel, the upper right-side guide wheel, the tensioning wheel, the upper left-side guide wheel, the lower right-side guide wheel and the other one power guide wheel to form a closed ring. A working method comprises the following steps that: (1) the power wheel is operated to drive the belt to operate; (2) the printing product with a downward printing surface is conveyed into a belt entrance among the upper right-side guide wheel, the upper left-side guide wheel, the lower left-side guide wheel and the lower right-side guide wheel; and (3) the printing product with the downward printing surface is conveyed by the belt in a 180-degree manner, the printing product is output from the belt entrance and the printing surface is upward. The overturning mechanism of the single-sheet printing product provided by the invention has the advantages that: 1, the printing product is conveyed by the single belt without a linear speed difference and the printing surface is protected; 2, the belt can be linearly overturned and the movement is smooth, so as to protect the printing product to have no folds; and 3, the structure is simple and is easy to realize.

Description

(1) Technical field: [0001] The invention is suitable for printing machines, especially for equipment with box-gluing function or quality inspection function in printing machines, that is, a single-sheet printing product reversing mechanism and its working method. (two) background technology: [0002] With the increasingly fierce market competition, improving product quality is the main method for each processor to win the competition. When testing the quality of printed products on a single sheet, the paper feeding part is usually conveyed with the printing side up. The printing surface is easy to be scratched by the paper feeding knife, which not only affects the appearance but also easily produces waste products and reduces the qualified rate. Therefore, the ideal conveying method is to convey the printing surface downwards, and then upwards when the printing surface reaches the detection position. [0003] In the prior art, two upper and lower belts are generally used t...

AI Technical Summary

Problems solved by technology

The printing surface is easy to be scratched by the paper feeding knife, which not only affects the appearance but also easily produces waste products and reduces the qualified rate. Therefore, the ideal conveying method is to convey the printing surface downward, and then upward when it reaches the detection position.

[0003] In the prior art, two upper and lower belts are generally used to complete the flipping of a single printed product, and the transmission is relatively complicated. Using two sets of belts to realize paper flipping requires two steering idlers to turn the belts, which will damage paper that is not easy to bend; And the linear speed of the belt must be consistent, otherwise the difference in the linear speed of the two belts will easily cause the wear of the belt on the printed matter

Images