Saddle stitching process introduction

The saddle stitching process is one of the book binding forms. The book is named after the book is straddled on the book shelf. The saddle-stitched book is made with the cover book. When the book is affixed, the folded book begins with a middle quote, and then it is placed on the stapler work table. On the triangular support, finally cover the top. At the time of the book, they were threaded into the inside of the spine of the book and creased outside. The book was curbed on three sides and became ready for reading.

Saddle stitching is a relatively simple method of bookbinding. It has a short process flow and a fast publishing speed. It is made of iron wire, which uses less material and has a low cost. The book is easy to open and close and easy to read, but the cover is easy to use during the course of use. The ties are off and difficult to keep. Therefore, the saddle stitch binding method is often used to bind books such as magazines, periodicals, and booklets, which have a relatively short preservation time. Because of the saddle stitch method, the thickness of the product is subject to certain restrictions. Generally, a maximum of 100 pages can be bound.

There are two types of horse riding staplers that are commonly used: one is a semi-automatic saddle stitcher; the other is an all-natural riding saddle stitcher. The automatic motorcyclist stapler linkage engine is a multi-step linkage binding machine that binds a variety of graphic magazines, magazines, periodicals, etc. with wire, and has a wide range of uses and high production efficiency.

First, semi-automatic saddle stitcher and stapler <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> Semi -automatic saddle stitcher and stapler <br> Two operations. The process of collating and stapling is: manually opening the folded pages and placing them on the triangular support of the collection chain in turn. There is a uniform rotating transmission chain under the tripod, pushing the pages equidistantly on the chain. The pages of the hitting book are sent to the stapler for the book. After the book is submitted to the book receiving device, after counting, manually tied, pending cutting.

The working process of the saddle-stitching head is divided into five processes, namely feeding, cutting, bookbinding, bookbinding, and hooking, as shown in Figure 5-11. The stapler head usually has 4 groups, and the format of the book can be increased or decreased according to the book. For example, a book with 32 pairs of books, a stapler with 4 heads, a book with 16 bills, and a stapler with 2 heads. At the time of the book, adjust the stapler's heading according to the size of the book, so that the position of the wire nails is kept at a distance from the sky and the feet.

There are two kinds of saddle stitching methods, one is to wear a book at the same position of each signature, which is called alignment; the other is to cross the nail between the label and the stitch, as shown in Figure 5-12. . The staggered-stitching mode allows the intertwining of the legs between the placard and the placard, which is improved compared to the case where the back of the book is higher than the front mouth when the book is used, which is favorable for the three-side cutting of the next procedure and makes the books and books smooth. accumulation.

Semi-automatic saddle stitchers need to manually page, stapled books and magazines must be bundled, to be cut, and stacking is required between processes. Therefore, it is time-consuming, labor-intensive, and labor-intensive. Production efficiency is not high.

Second, riding a book binding motive

1. PDQ-2 triple riding saddle stitching. This machine is a triple-type saddle stitching linkage production line produced by the Shanghai Staples Machinery Plant. It is a multi-process interlocking binding device consisting of 8 page-laying units, stapler units, and three-side cutters. The production line has a wide range of uses and high efficiency, and is suitable for large and medium-sized printing companies to bind large quantities of periodicals, magazines, and painting services.

The working process of the triple-type production line is shown in Figure 5-13. The signatures of the folded pages are automatically placed on the collection chain by the page-laying unit. In the process of sending the collection chain, each signature is blocked by the rules and the signature is sent to the stapler head. Next, the book of the stapler is sent to the three-sided cutter, and the printed book is sent to the receiving book after optical counting and the book binding process is completed.

The production has a high degree of automation. All the binding processes are carried out continuously and automatically, and a control system is installed, which mainly includes various control devices such as signature detection, overload parking, skew parking, book rejection, and book counting. Binding quality. The signature detection device is used to check the quality of the collation. When there is a missing or multiple post, the detection device sends a signal to make the head stop for this booklet, and the waste output device will It is sent to the waste book bucket. If the output is skewed or overloaded, it stops automatically. The book counter is installed at the exit of the three sides of the book cutter to control the two book desks to receive the books according to the required number of rotations, which are stacked by the operator. The machine has good binding quality, high efficiency and easy operation.

2.235-5 type wire saddle stitching linkage production line. The production line is a saddle-stitching production line produced by the Martini company in Switzerland. The machine is mainly used for binding journals, magazines and pamphlets with a thickness of 6 mm or less. It is composed of a cover (splitting), a saddle stitching, and a three-side cutting mechanism, and is equipped with a quality inspection control, scrappage rejection, finished product stack counting, and safety devices. The biggest feature of the machine is the use of building block combinations, which can be based on different conditions, plus a stacking machine, packaging machine, inserter, etc. to form a variety of new types of binding linkage lines based on the above composition, to adapt to the user's various need. Figure 5-14 shows several combinations of the 235-5 riding coupler motives.
The main technical specifications of the saddle stitching production line are shown in Table 5-2.

Table 5-3 Technical specifications for saddle stitching PDQ-02 type 235-5
Maximum binding width 280mm×400mm
320mm×480mm

Minimum binding width 130mm×180mm
105mm×148mm

Stapling thickness 8mm
6mm

Stapling speed 40～100/min
2500 to 12000 copies/h

Third, the quality requirements for horseback riding books and periodicals <br> According to the national industry standard CY/T29-99, the requirements for riding bookbinding quality are as follows.
(1) The center of the page is accurately positioned and centered on the frame. The page is free of oil, dead folds, white pages, small pages, scraps, breaks, and folds;
(2) Matching should be correct and neat.
(3) The book nails should be 1/4 of the length of the upper and the lower of the book block from the outside of the nail. The allowable error is ±3.0mm.
(4) Nail saws are nailed to the crease lines. There are no bad nails, no missing nails, no heavy nails, and the nails are straight and firm.
(5) The finished product size should meet the requirements of GB/T788-99, non-standard size according to the contract requirements.
(6) The finished product has a neat appearance with no indentations. After the finished product is cut, there are no serious knife cuts, no knife pages, no serious breakage. Finished product skew error ≤ 1.5mm.

Source: JKL Group Co., Ltd.