â— 2. Book shell production The cover of the hardcover book is called the book case. Except the plastic book case, the structure of the hardcover book cover is shown in Figure 8-28. 1 - book block; 2 - cover; 3 - back cover; 4 - book back; 5 - cloth waist; 6 - paper; The shell of the book shell is divided into the whole book shell and the book shell of the ingredient. The whole book shell is a piece of fabric with the cover, the back cover and the back together. The cover of the ingredient book is the same material for the cover and the back cover, and the back cover is used for another. Kinds of materials. There are manual operations for book covers, but they are inefficient and are now being converted into machines. Produced good book shells, need to be finishing processing, in the front and back seals and the back of the imprinted book name patterns, processing methods can be ink imprinting, metal foil hot stamping, embossing, concave and convex lines, screen printing, etc. . After the book shell is finished, the final processing is carried out. The purpose of the rounding and rounding is to make the back of the book shell an arc shape to adapt to the arc shape of the book block. The job of linking the book block and the book case is called a shell. This work can be done manually or by machine. First brush the glue in the book slot, and then put it on the book block so that the book slot and the ridge of the book block are firmly bonded. Then glue the glue on the back sheet of the book block so that the book case and the book block are firm and flat. There is a book slot at the front and rear cover of the hard-covered hardcover book and the connection between the back and the back. The function is to protect the book block from deformation, beautiful appearance and easy to read. The back pressure slot is pressed with copper wire in the upper and lower book slots, and the press forming method is used. . After the pressure groove is completed, the hardcover books and magazines are processed. If there is a seal, the seal can be packaged and delivered to the factory. There are many hardbound binding processes, and the process is complicated. When manual operations are performed, there are many operators, the binding speed is slow, and the efficiency is low. At present, the hard-bound binding automatic line can be used to continuously and automatically process the water-blocked or glue-bound book blocks, and the final product output will greatly speed up the binding speed and improve the work efficiency. The automatic line can complete the book core supply, book block flattening, brushing and drying, book block pressing, three-side cutting, book block rolling, spine, book block brush glued gauze, sticky cardboard and plug cloth, and book cover , pressure groove molding, book output and a complete set of hardbound binding work. The domestic JZX-01 hardcover bookbinding automatic line can bind books with a thickness of 6 to 75 mm and a format of 64 to 16 copies, and the binding speed is 18 to 36 copies per minute. (to be continued) 
7 - in the diameter; 8 - plug cloth; 9 - spine; 10 - book slot; 11 - thick cardboard; 12,13 - floating port;
14 - Bookmark band; 15 - Middle diameter paper; 16 - Gauze; 17 - Front lining;
When the book case is made, the cover material is first brushed according to the specified size, and then the front and rear sealed paperboards are pressed and positioned, which is called a swinging shell, and the surrounding edges and corners are wrapped to become a complete bookcase. Flatten it.
â— 3. Shell