Postpress Technology 1000 (776-789)

776,Original requirements for the operation of the elliptical bag machine clamping set?
A: (1) The clamping brackets and clamps on both sides should be set correctly according to the thickness of the book. They should not be overtightened or loosened. The actual thickness of the book should prevail; (2) Book books after clamping should be guaranteed Firm and non-gang line; (3) Each plate should be kept clean without glue when clamped to ensure the appearance of the book.

777. What are the operating requirements for the output of the elliptical package native machine?
Answer: (1) The book should be kept well and the book should not be deformed. (2) Check whether the undamaged book is in good condition and repair it at any time.
There are two kinds of disc type and long type in the single unit of the wireless glue binding package. Its operation requirements are basically the same as those of the elliptical package machine, and no more description is given here.

778. What is the process operation of a single book on three sides?
A: There are many types of single-sided machines on the three sides, but the operation process is basically the same. The main ones are: setting the rules, transferring books, depositing books, importing books, pressing and positioning books, cutting books, and outputting books.

779. What rules should be set for a single machine on three sides?
Answer: According to the height, paper quality, format, etc. of the book, three sides of the book need to be set up: (1) by the rules, the back side of the post; (2) the height of the pressure and the book specification; (3) ) Side knife width; (4) Width of knife; (5) Height of knife pressing.

780. What are the operating requirements for carrying a book on a three-sided book?
Answer: (1) The height of the booklet is properly communicated with the tongue-pressing distance. Generally, the height can be adjusted to about 10mm from the tongue, so that a stack of books can be smoothly inserted under the tongue, and the booklet is not deformed due to the height being too small; (2) The height of each book must be the same and the number is accurate; (3) When transferring the book, it is necessary to cooperate with the reserve staff to ensure the smooth operation of the three sides of the book.

781. What are the operating requirements for the single-sided storage of three-sided books?
A: (1) The reserve should be neat, and once the books are stored, they should be kept vertical. Each copy should be close to the side and rear rules. (2) If the stored books are in the process of conveyance, if they are found to be skewed, etc. , To immediately stop the operation, wait until the shutdown before starting to boot, avoid driving the knife to grab the phenomenon (without shutting down with hands to capture the danger of the book together).

782. What are the operating requirements for the three-sided cut-sheet single-machine feed?
A: (1) The book holder must be balanced in the guide rails to ensure that the books are positioned correctly; (2) When it is found that there is vibration and instability in the operation, it is necessary to immediately stop the adjustment so as not to cause the size after the book is cut. Do not wait for the question.

783. What are the operating requirements for three-sided book stand-alone book positioning?
Answer: (1) The height of the book should be determined according to the thickness of the book. The pressure on the book must not be too small (too loose) nor too large (too tight). Excessive or too small pressure can result in a book. Cutting size is not stable; (2) The specification of the press model (under the jack) must be consistent with the size of the book, not too large or too small; (3) The back part of the book should be based on the height of the book. Give a proper slope to ensure the flatness of the book back.

784. What are the operating requirements for a single-cut book on three sides?
Answer: (1) The angle (α angle) of the blade used for the book must be consistent with the paper quality of the book. When the blade is not sharp, it is necessary to replace the new knife in time; (2) The blade is at the time of cutting At the lowest level, it is appropriate to be able to cut and cut a stack of books. It must not be cut too deep to cause the paper to tear off the pages, nor cut too shallowly, and even a knife page appears; The depth in the blade should be (0.8 ± 0.2) mm.

785. What is the positioning requirement for a three-sided book with a single machine?
Answer: (1) The break marks drawn by the breaking knife (also called road marking knife) must be on the same straight line as the blades on both sides; (2) The breaking knife device must run vertically and must not be skewed when working. It is advisable to cut the cover of both ends of the book; (3) The height of the blade (knife blade) must be on a horizontal line with the plane of the machine and must not protrude or recede.

786. What is the operation process of semi-mechanical processing of hardcover book blocks?
Answer: The operation of semi-mechanical processing of hardcover book blocks refers to the processing of semi-finished book blocks after sewing. Operation process: Pressing of the book block, binding the first time the adhesive is glued (or not tied), drying the copy, cutting the book, making a circle, starting the ridge, applying the second adhesive, sticking the ribbon, and plugging Cloth → Third time adhesive → Adhesive back and back paper → Fourth time adhesive → Sticky cheese paper.

787. What is the function of hardcover book block flattening?
A: The hardcover book block must be flattened before processing. The unsmoothed book block cannot be further processed by the next process. The effect of flattening is to remove the air from the book block and reduce the high-convex part of the book block. The books are compacted and flat, uniform in thickness, and improve the quality of the book block.

788. What are the operating requirements for hardcover book block flattening?
Answer: (1) Adjust the pressure (height) rule of the press according to the actual thickness of the book block (one or several books) and the looseness of the book, and then perform the normal work after the pressure test passes; (2) Press Normally, the book block should be neat and tidy, and there must be no missing posts, skewed and dumped phenomena, and they must be laid flat. (3) After the flattened book blocks, the thickness between the books should be basically the same, and the mistakes must be made. Put on the paper table, the number of each layer is the same, the four corners do not overflow, each layer is stacked one layer of pressure plate to keep the thickness of the book block consistent; (4) When the book block is flattened, the pressure is appropriate, not too large or Too small, the pressure is too small, the circle becomes bigger, the pressure becomes too large, and the roundness becomes smaller, which may cause the book block and the book case to fail to fit together; (5) The pressure is 90° after the corner of the book block is cut. quasi.

789. What is the effect of the first coating of hardcover book block processing?
A: Applying glue on the back of the book after the flattening of the book is the first time that the book block is processed. Its role is to ensure that the posts of the book block are linked to each other, so that the core of the book is shaped, which is the cutting of the next process. Make preparations by making rounds and ridges.

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