Book and periodical rotation offset press folding machine free of needle poking

Abstract

The invention relates to a book and periodical rotation offset press folding machine free of needle poking. The book and periodical rotation offset press folding machine free of the needle poking comprises a paper receiving device, wherein a second paper guiding device, a paper cutting device, a first paper guiding device are arranged above the paper receiving device in sequence, the paper receiving device comprises a page delivery roller with a gap in an outer circumference, a paper clamping seat is arranged inside the gap of the page delivery roller, an intact circumference surface is formed by an outer circumference of the paper clamping seat and the outer circumference of the page delivery roller, a blade pad is arranged on the paper clamping seat, and notches are formed in two sides of the blade pad, a protrusion of a first press plate and a protrusion of the second press plate are respectively arranged inside the notches located on the two sides of the blade pad so as to enable the blade pad to be fixed. The book and periodical rotation offset press folding machine free of the needle poking enables a print post to be free of poking needle holes, so that beauty of the print post is greatly proved, meanwhile, after the print posts of books and periodicals are free of poking the needle holes, trimming quantity is reduced, and print paper is saved.

Description

technical field [0001] The invention relates to a printing device, in particular to a stamp-free book rotary offset printing machine folding machine. Background technique [0002] At present, the folding machines of the rotary offset presses of books and periodicals at home and abroad generally use a needle-stamping mechanism to drive the paper path cutting, folding and conveying. The advantages of this mechanism are simple, practical and reliable. But the main disadvantage is that the head of the printing sticker (such as a common newspaper) will produce a row of poking pinholes (see image 3 ), which affects the beauty of printing and pasting. As an ordinary newspaper, people are accustomed to the pinholes in the mastheads and can accept them, but as bound books and periodicals, pinholes are not allowed to exist. Therefore, before the books and periodicals are folded and pasted, the edges with pinholes must be cut off, and the cut off edges can no longer be used for other...

AI Technical Summary

Problems solved by technology

Therefore, before the book is folded and pasted, the edge with the pinhole must be cut off, and the cut edge can no longer be used for other purposes, and it will undoubtedly become waste. It can be seen that this is a huge waste

Stamp-free needles for book rotary offset presses have been the goal of the domestic book printing industry for many years, and it is also a project advocated by UNESCO. Although all parties in the country are working hard to explore, there has been no major breakthrough, and it has not yet been successful.

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