Frequently Asked Questions in Wireless Binding Production Process and Solutions

1) round back

The height of the book in the book clip and the signature of the book Qitai are too low, and the sign stick out should be controlled at 11 to 12mm. The position of the tray must be increased; the cutting knife is too high and the position of the cutter head should be reduced. Groove depth is controlled within 1.0mm.

2) oblique book

The glue temperature is too high. When the book is dropped, the back of the book is not solidified and falling, and the glue temperature should be adjusted according to the paper and seasonal changes. Generally, the temperature is controlled between 160 and 180°C. If the speed is too fast, the glue with a short curing time should be used, and the glue should be reduced. Speed; book clip opening is too large, should be transferred to the signature thickness plus 15mm, and should also narrow the book aisle, block bar.

3) The book's opening and notches are not rectangular

The degree of parallelism and verticality of the tray and the holder should be adjusted so that the backs of the book are aligned with each other.

4) The cover is sticky. There is wild glue on the top roller, stick to the cover of the book, and the bottom plate of the forming mechanism is viscous. The clamping plates on both sides are glued and sealed. The seal should be removed frequently. Therefore, the excess glue should be removed frequently and methyl silicone oil should be used. To prevent the development of wild glue; the glue on the back rubber wheel takes too long to produce wild glue, and the glue application time should be fine-tuned. Try not to produce wild glue and minimize gum temperature.

5) The book cover is folded or misplaced

If the book position in the book clip is too high, the position of the tray must be raised. If the knife is too high, the position of the cutter head should be reduced. If the temperature of the glue is too low, the temperature of the glue should be increased. The glue stick should be left with glue. The glue stick should be adjusted. The gap between the plastic sheets is made zero, and the working status of the heating tube in the slush bar is checked; if the binding speed is too fast, the machine speed should be lowered and the drying time should be extended before cutting.

6) Leverage

The signature of the book is too low or the book position is low in the book clamp. The position of the solid board should be reduced. If the notch is too low, the position of the cutter head should be increased; the clamping force on the side of the bracket is too large and should be outward. Adjust the side clamp plate position properly.

7) Bubble or honeycomb film

The height of the book in the book clip and the height of the tray are too low. The position of the tray must be raised. The temperature of the backing glue is too low or the temperature of the glue stick is too low. After the measurement, the temperature is increased.

8) Back rip or over-squeeze

Low book position in the book clip, the position of the tray should be reduced; the pressure of the upper seal cylinder is too large, the distance between the upper seal drum and the bottom plane of the book clip body should be ensured to be 9mm, and the glue on the rubber wheel 1 is excessive, and the glue should be glued. The clearance between the wheel 1 and the scraper plate is adjusted to 0.2-0.5mm; the rubber pad 1 is too high and the pressure is too high. It should be ensured that the rubber wheel is in contact with the back of the book, and the back of the book can be opened to make the glue penetrate into the booklet in small amounts.

9) In front of the book, the edge of the cutter must be opened or turned to passivation. The edge of the cutter should be sharpened and the viscose should be removed. It is best not to use this machine to process the rework. The adjustment of the cutter must be readjusted if the backing cutter is not properly adjusted.

10) Dispatch

The depth of backing is not enough; the depth of grooves is improper and the groove distance is not proper, so the depth should be about 1.0mm, and the spacing should be between 5~10mm; the temperature of hot melt glue is too low, lack of fluidity and permeability, and the bonding is not In prison, the glue temperature should be increased according to the paper quality; if the hot melt adhesive is improperly sized, the hot melt adhesive equivalent to the paper grammage standard should be selected. For coated paper books with high preservation value, binding by the hot melt adhesive process should be avoided as much as possible, or Use the method of squeezing the thread after the first line lock to prevent it from spreading.

12) The middle part of the book is not even

When the book falls, the gap is too big, and a groove is made in the small board. When the glue temperature is too high, the book is not evenly thick and thin when it is glued. The groove is not clean, the paper hair is not removed, the adhesive cannot be leveled, and the milling and backing tool is not Sharpness, improper blade angle, or clearance between the plate and the plate, causing the back of the milling to be not smooth, and unevenness after the glue is applied; the position of the solid plate is too low to deal with symptoms.

13) Wide Book Back

Slotted knife support plate is not aligned with the large plane of the book clip body; the upper seal roller is too high and the pressure on the back of the book is too high; the back rubber on the rubber wheel 1 is too high to allow the glue to penetrate between the pages; the book block is loose and not tied ; milling back is not smooth, rough. Coping solution.

14) Wedge

If the distance between the squeegee and the bottom surface of the book clip body is too small, the position of the sizing wheel 1 should be reduced.

15) uneven film

The height of the side glue and the bottom glue device and the inside and outside position are not well adjusted; the clearance between the rubber wheel and the scraper plate, the glue stick and the scraper plate is improperly adjusted and should be readjusted; the distance between the glue stick and the book block is inaccurate, and the glue The rod is not heated well, and the glue stick is not parallel to the back of the book. Coping solution.

16) Wedge film

The glue stick is not parallel to the bottom surface of the book clip body; the bottom plate is not parallel to the bottom plane of the book clip. Should be readjusted.

17) The adhesive layer has voids

The adhesive in the adhesive device is too small, and the amount of glue should be ensured; when the temperature of the glue is too low, the glue temperature should be controlled.

18) Booklet cover positioning offset

The book cover conveyor guide chain is not aligned, and each pair of drawbars should be parallel and perpendicular to the side gauge; the upper drum is slightly lower, the cover and the back of the book are unmatched, and the cover is reset after being hit.

19) The cover is not firmly bonded

The machine speed is too fast, the glue opening time is long, and the hot melt adhesive matching the machine speed should be used; a small amount of the cover off the defective book is not cleared; the book is empty, the real-time agency improperly adjusts, the realizing pressure is too small, and it should be increased. The adhesive layer is too thin and the bonding is not strong. The back adhesive and the side adhesive layer should be thickened.

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