Office-type wireless glue binding machines are divided into desktop wireless glue binding machines (such as Jintu PB-220) and floor-mounted wireless glue binding machines (such as Jintu PB-770), and can also be divided into manual wireless glue binding machines (such as Jintu PB- 200), automatic wireless binding machine (such as Jintu PB-550), fully automatic wireless binding machine (such as Jintu PB-6000, W-7500). Especially suitable for document binding purposes of graphic stores, libraries, government agencies and other institutions. Several common faults and processing methods of wireless perfect binding machines are as follows:
1. Bad behind the book block milling
1. The book block is not neat or placed unevenly, so make sure that each piece of paper is put to the end.
2. When the book block is back milled, the amount of back milling is too small. The book holder should be lowered to make the milling depth 1.5-2.5mm (small milling cutter).
3. The position of the milling cutter cover is not suitable. When it is opened, it is not parallel, and the opening is insufficient or too large. The milling cutter cover should be reinstalled, or the seriously worn cover casters should be replaced.
4. The cutter is damaged or not sharp, and a new cutter should be replaced.
5. The small sharp knife of the chute is too high or too low, the angle is incorrect, the small sharp knife is blunt, the angle of the small sharp knife is adjusted correctly, and the small milling knife is replaced.
2. Uneven glue on the back of the book
1. The gap between the scraping film surrounding the glue and the glue roller is uneven, and adjust to make it even.
2. The position of the rubber scraper is too high or too low, the height should be adjusted correctly.
3. The glue roller is beating, the one-way bearing is worn out, replace the bearing.
4. If the glue roller does not move, the unidirectional bearing may be damaged. Replace the bearing.
5. The glue in the glue pot is not melted enough or the temperature of the glue pot is not set properly.
3. Poor side glue application
1. Too much or too little side glue, adjust the gap between the glue roller and scraping film to 0.5-0.8mm.
2. Too much or too little side glue, adjust the height of the rubber scraper.
3. Check whether the glue roller does not rotate or the rotation is not flexible.
4. Bad upper seal
1. The indentation of the cover is misplaced, and it should be ensured that the indentation is correct.
2. The cover is skewed, ensure that the cover is properly placed, and the positioning pins and positioning magnets on both sides should be close to the cover.
3. The cover itself is not flat or cut unevenly.
V. Bad package book
1. The book is flat at one end and rounded at one end. The clamping force of the book block clamp (carriage) is insufficient. During milling, the whole movement of the book block is tilted. Adjust the book block clamp.
2. Check whether the book block is flat, and whether it is raised or pressed on the table after tightening. If there is, remove the book block board and stick compensation tape on the inside to eliminate this phenomenon.
3. The book is straight on one side and arc on the other, and the clamping plate on the table is tight and loose on the other side, and calibrate the position of the clamping plate.
4. The back of the book is wrinkled. The cover may be too thin or the book block may be poorly milled.
5. The back of the book is wrinkled, it may be that the pressure of the splint is set too high, or the pressure of the pallet is too large, you should carefully check and eliminate the problem.
6. Book degumming and loose pages
1. The milling depth of the book block is not enough, and the pages are not completely milled into a single page, which causes the book to be degummed and loose. The milling depth should be increased.
2. The temperature of the hot melt adhesive is too low, and the poor fluidity and permeability of the glue causes degumming and loose pages of the book. The temperature of the hot melt adhesive should be raised to 170-178 degrees.
3. The thickness of the hot-melt adhesive on the back of the book is too thin to cause the degumming and loose pages of the book. The thickness of the back adhesive should be controlled, generally 0.6-2mm.
4. Improper use of hot-melt adhesive models may cause degumming and loose pages of books. Choose a hot-melt adhesive that matches the model, season and paper.
5. The paper inside the book block is too thick, covered with film, or paper that is not sticky at all, so the wireless glue cannot be used.
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