When binding the Lekou book, use folding → bundling → collating → first binding → book collection, tearing and binding paper → door cutter → second binding → Lekou process. When using single-disc binding machines such as disc-wrapping machines, the incisions can be neat, but the workload of four people must be increased during the first binding. When the cover is bound for the second time, if there is no secondary milling back, a layer of paper and two layers of glue can be seen in the book back glue, and there are many round back books, and the appearance quality is not good. If secondary back milling is performed, the quality of the book backpack seal is good, but the milling depth is increased at this time, which is not good for the machine, and the book size is reduced. The value of some fashion orders is still not equal to the value of the milling cutter, and it is not worth the loss.
The above procedure is used when book binding is not perfect, and the book-feeding staff is convenient to work, but there is a serious unmilled phenomenon when milling the back, which is easy to cause page breaks. The main reason is that thick books inevitably have shrinkage when they are bundled. After the back of the book is glued together, the wear on the milling cutter is increased, and the back of the book is turned. Therefore, the non-speaking book can use the process of folding → bundling → page matching → perfect binding. In addition to overcoming the above defects, this process saves personnel and reduces material loss. The disc bag machine adopts four people for regular editing, one person collates to check the number of posts, one person feeds the book, and the rest of the staff put on the cover and collect the book. The work is relatively easy.
Folding → bundling → waxing → collating → bundling and brushing → door cutter → glue binding → Lekou process, the first time binding is replaced with bundling glue, and the second binding process is cancelled. The waxing process can be doubled to save double the working hours. When bundling the glue, the back of the book should be flush (such as the sky), and the glue should be brushed on both sides to make the book difficult to spread and ensure the cutting quality of the door cutter. When cutting, make sure that the cut is neat. If there is a small amount of unmilled back milling, increase the milling amount to 3.5mm. This method not only reduces the loss of the milling cutter, but also ensures the quality of the milling back.
This process can also be used on the ZXJD440A paper binding line. Due to the thickness of the general Lekou book, the number of posts exceeds the number of collated pages. If you use two glue bindings in the glue binding line, the second milling amount is too small, the glue can not penetrate into the back of the book, the book is easy to stick, the wrinkle or the round book is easy to appear, and the quality of the book is not good. If the milling amount is too large, the book cannot be opened and the specifications are not correct. Because the machine does not drop books for the second time, the glue on the flush edges can also be brushed. When adjusting the machine, pay attention to the channel spacing when the book is dropped to the conveyor belt after the book is completed, to prevent the back of the book from being deformed, which will affect the appearance of the cut.
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