2. Cutting problem

1) Inconsistent ups and downs

The slitting knife should be aligned with the slitting line, so that the two books are basically the same.

2) Left and right skew

In the process of sending books, the parallel lines of the two pushing blocks are not perpendicular to the middle knife or the tracks are too narrow to produce a skew; the pressures on both sides of the pressure plate are inconsistent or too light; the cutting is continuous or the raw edges are serious, and the floor plate and the cutting blade must be frequently changed mill.

3. Three-sided cutting problem

1) After cutting, the large and small blades on the finished book are blunt, which makes the size of the door knife inconsistent; the delivery trolley is not perpendicular to the working platform and the pressure of the paper press is light; the cutting height exceeds the design height, resulting in pressure on the paper press , Pulling force increases, the paper is bent and deformed greatly; the side blade is too narrow or the upper side of the back is knocked when the sharpening knife is sharpened, and the knife edge and the cutting surface should be at a certain angle.

2) There are bevels

The delivery car trolley is not parallel to the doorknife, resulting in incisions; improper booklet aisle gaps, excessively tight transport resistance, too loose and swaying; front and rear cutters on the turret measure in different sizes and should be replaced Calibrate the knife holder; the brush is not in place and the book block is not aligned. The book is not stable.

3) Book breaks

Should ensure that the glue layer is between 0.8 and 7.2mm, the plastic tray is level and the package is empty; the cover paper is poor or the paper is not in the correct direction; the book-bundling time is too short or tight; the milling back is not Smooth and clean, it made the back of the rubber loose and increased the thickness of the book. Slots are not smooth, fast, and the side glue is too thick; the jacking plate is not used properly, it is not pressed on the cutter head of the sky or the ground, and tearing occurs; the stapled book is slanted back; the blade is not fast and the corner angle is too small. Scoop up the glue on the blade and wax or talc; use a guillotine machine with a broaching knife.

4) Maokou

The blade cut into the knife is generally about 0.5mm, should always change the quality knife and blade.

5) Sword flowers

Broken blade, gap or chipping phenomenon.

6) The size of the doorknife is large and small

In the delivery trolley assembly, if the adjustment screw cannot be locked, it will loosen; the wheel in the trolley track will be worn and improperly adjusted; the needle bearing in the delivery arm swing sleeve will be worn out and damaged, which will result in large and small swing of the trolley .