Spool binding method (1)

Spool binding refers to the method of binding staples together with needles, threads or ropes. This method is mostly used to bind strong, durable books such as encyclopedias, reference books, art books, and the Bible. For more than a hundred years, the most commonly used stitch binding method is the “Smyth” binding method, which is a binding method that passes a binding line through the spine and puts the pages together. The advantage of using this method is that after the pages of the signature are bound together, they can also be spread flat.

Sewing binding is available in both side and saddle stitching forms. Bookbinding is the passing of a gutter through a book in a direction parallel to the spine. Like some publications, the sideline method is often used, and the side binding method is securely bound, but it cannot be completely unfolded. Handbooking is most commonly used when working in a library or doing book repairs; when using machine side stitching, the needle is attached with a thread through a drilled hole, and the pages are joined together in the form of a square thread. The two-wire binding adopts a structure similar to a household sewing machine needle and a bobbin. The difference from the sewing machine is that the needle passes through the drilled hole of the sewing thread and joins the pages together.

Saddle stitching is the method by which the binding passes through the signature along the middle fold and binds the pages together. Because saddle-stitched books are easy to spread out, this type of binding is more common than side-stitching. In automatic saddle stitching, signatures are transferred from the hopper to the feed saddle where a scanner is installed to monitor the entire operation. A roller presses the signature on the protective screen in front of the feeding saddle, and the conveyor belt transfers this signature to the saddle for binding. After stapling, a separator separates the gutters and the books fall on another conveyor, which is shipped to the trimmer and delivered or shipped to the assembly line.

Trimming Machine <br> Trimming Machine is a device that cuts out the folded or uneven parts of the book block to form a neat and smooth edge and can cut all the adhering pages. In addition to mechanical binding and loose-leaf binding, it follows the entire nailing process as part of book finishing or online bookbinding. The edge trimming machine consists of a knife, a book and a file, and a back file. This system can cut the top, bottom and side of the book at the same time without changing the settings. Most of the book blocks are completed by trimming the three-knife/five-knife trimmings linked to the saddle-stitching machine and perfect binding in the finishing line.

The edge trimmer cuts out excess parts of books or magazines from the top, bottom and edges. As part of the entire bookbinding flow line, the book block is automatically transported from the binding machine to the trimming machine, while the trimming machine may be cutting another book block while trimming the front edge of a book block. Back edge. Each book block is loaded on the feed guide of the edge trimmer and sent to the side knife where it cuts both the top and the bottom of the book block. When the side cutter is removed, the front cutter trims the edge of the book block and removes the overlapping pages of the folded book so that each page can be opened. The transfer jig lifts up the cut book block and places it on the conveyor belt, after which the book block is sent to a register or stacker. The air blower blows away the confetti on the trimmer so that the machine can trim the next book block.

If a book block is printed in double-spread, that is, two sets of books are printed and bound together, then before cutting on three sides (if not too thick, it may be a five-sided cut), the entire book must be sawed open. The five-sided trimming machine can also handle three-print book blocks.

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