Web offset press fault and handling (2)

Seventh, the horizontal cutting edge of the paper is not uniform, fluffing or tearing causes:
1, cutting rubber wear;
2, cutting blade passivation or crack;
3. The lack of elasticity of the blade stem cushion spring results in inflexible movement;
4. The loss of the blade stem gasket spring results in the pad not being reset.
deal with:
1, replace the cutting rubber band;
2, replace the cutting blade;
3, replace the blade rod liner spring;
4. Level or replace the blade rod half-pad spring.
Eight, paper cutting constantly causes:
1, cutting knife is too low;
2, cutting knife pad or rubber pad wear;
3, cutting blade wear or not sharp;
4. The knife blade under the blade liner spring is not elastic enough to restore the force, resulting in the knife cutting the tape, not under tension in the tape.
deal with:
1, increase the cutting blade;
2, replace the cutting knife liner or cutting rubber;
3, replace the cutting blade;
4, replace the blade liner spring.
Nine, eight, or thirty-two open double folds
1. The folding blade of a folding roller is not parallel to the centerline of the roller;
2. The folding knife edge of the two-fold roller and the center line of the roller center line;
3. The clamping force of the folding splint to the fold is inconsistent.
deal with:
1. Adjust the position of the folding knife edge of a folding roller so that it is parallel to the centerline of the roller;
2. Adjust the position of the folding knife edge of the two-fold roller to make it equal to the centerline of the roller;
3, adjust the splint, so that the same clamping force.
Ten, eight open or thirty-two open double folds do not fold in the middle reason: eight open or thirty-two fold folding knife position is wrong.
Remedy: Adjust the position of the eight- or thirty-two open knife in the bowl groove.
Eleven, eight, or thirty-two open double folded paper throw reason:
1. The position of folding knife and splint is not correct;
2, folding knife and splint are not parallel;
3, knife is too low.
deal with:
1. Adjust the relative position of the folding knife and the splint;
2, adjust the folding knife and plywood so that they are parallel;
3, increase the folding knife.
Twelve and sixteen fold folding posts are not in the middle: the sixteen opening knife is not in the middle of the eight opening posts.
Remedy: Adjust front and rear racks or sixteen open knife racks to the correct position.
Thirteen, sixteen fold folding posts crease reason:
1, the page brush brush pressure uneven;
2, 16-fold folding conveyor belt positioning is poor, uneven pressure;
3, 16 open folding stopper and folding knife is not vertical.
deal with:
1, adjust the pressure of the folded brush brush, so that the pressure is uniform;
2, adjust the conveyor belt to ensure tightness and uniform pressure;
3. Highly adjust the stop gauge to block the paper plane so that it is perpendicular to the folding knife.
The reason for the unreality of the fourteenth and sixteenth post quotes:
1, 16-inch folding page roller setting position is not good;
2, 16-fold folding page roller pressure is not enough.
deal with:
1. Change the relationship between the folding roller and the sixteen opening knife so that the sixteen folding back is just at the position of the molding strip;
2. Adjust the spring or cylinder so that the folding roller has sufficient pressure.
Of course, the specific analysis and processing of different folding machines should be considered as reference only.