What are the leaflet size specifications? (I)
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Folding Printing Hinge-size specifications What are the folding printing skills The folding method has manual folding and machine folding two kinds. Sheet-fed printing of large-face impressions, are required to handle the work or folding machine page ability to become a book post.
Web Book Publications rotate the printing press with a special folding mechanism, because the printed hinge is completed on a machine.
Manual Folding By hand the printed impressions by the number of children follow the order and the format, fold a book, called Hand-folding with the increase in the mechanization of bookbinding, hand-fold in books and publications in the printing plant more and less, so far only a small set of voluminous, 10 of paper pages, the mantissa to make up, There are a few special folding books to be done by hand. Hand-folding tool for a folding table and a folding board. According to the situation of the Test fold, the number of pages to say the advantages, and then rows 20 percent, 30 percent, 40 percent.
After folding a good post, check the number of children along the order is correct, page number and folding seam is neat, fold a book to fold the label is in the fold of high grade, and then folded good books and bundled.
Second, the machine folding
Machine folding is to fold the impressions, according to the number of children along the order and the format, the machine folded into a book post?
So far the commonly used folding machine is made of paper device, folding mechanism and the receiving mechanism three parts. Paper-feeding device is mainly shouldering the clutch and conveyor paper where ball work, can correctly transfer the printed page to the hinge part. Folding mechanism is to the paper device to transport the printed page according to the format, according to the number of children in the order folded in the book post.
The paper-collecting organization is to fold the book into a regular stack.
1. Folding preparation. Folding mechanism is the most important part of the folding machine, its assembly precision and debugging precision directly affect the quality of the hinge.
Because of this in the folding machine before opening, demand binary page machine each part of the enforcement and regulation, mainly to arrest and adjust the site
① before the paper to check impressions there is no Chathe, the use of packaging paper, impressions placed on the paper on the platform should be on the average by the steps of each piece of paper to make out of each other 1.5~2mm spacing, impressions on the The minimum page number is up and the fold is up.
The use of platform-type paper delivery, Impressions Zichu flat on the heap on the paper table, the smallest number of children facing down, loading paper to the early can not affect the speed of paper, the protection of the hinge not encountered difficulties;
② the position of the side gauge and the control gauge to ensure the horizontal and vertical positioning of the where ball;
③ the use of grid folding machine, according to the fold of different folding requirements, the use or closure of each grid, complete 10 percent or several folds of a variety of folding form and format folding;
④ according to the form of folding, paper where ball thickness and the number of pages per fold adjust the distance between the hinge-roll and the position of the core line, so that the impressions was pressed into the 20 percent-page roll seam of the two ends of the same level, to ensure the speed of impressions transmission, so that the hinge-safe, to prevent revealing impressions skew or tearing
⑤ According to adjust the hinge-roll spacing, adjust the exact position of the folding knife. Folding machine also equipped with truncation and drilling device. The utility of the truncation device is to divide the whole sheet printing into two pieces in the process of 10 percent. From the performance of the whole-piece knife-folding machine, its second folding part has two sets of folding device, after the 1th fold only can be applied to the second stack, otherwise there is no way to implement the fold. Extra, impressions cut back, so that the paper folded into a book after the thickness of thin, so that the increase in the precision of the hinge. After cutting the edge of the paper should be Guangliu, or should be arresting or swap paper knife. The utility of the punching device is to punch a long hole in the next 10 percent fold seam, which is easy to discharge the air in the paper and avoid the wrinkle when folding. The position of punch knife and folding seam must be exactly the same, and the book should be folded slit cut through, but can not be broken, so as to avoid the scattered page and off page.
On the 40 percent-line punching device, used for the binding of the hole, bookbinding when the glue is cut through the edge of the knife penetrated to the book of each page, so that each sheet of paper are glued to each other.
2. Folding Process Because Impressions format and book publication size is not the same, especially the thickness of the printing paper is not the same, the number of pages binary page requirements are also different. Ordinary 20 percent pages, 30 percent pages, up to 40 percent pages.
8 sides/post, that is, 20 percent pages, commonly used in thick paper or 10 pages, 1 face/post, that is 30 percent pages, used in ordinary book posts, for the basic posts, 32 side/post, that is 40 percent pages, applied in thin paper or ordinary book posts paper.
Folding model Up to now the commonly used ZY102 type and ZY104-type all-Zhang knife folding machine, can fold the whole sheet of printed pages into the required format of the two fold folded in the form of 20 percent pages, positive and negative 30 percent pages, 40 percent pages, double page, etc.