Fault 1: Hunan Xinshao ZYH660 Hybrid Folding Machine Feeding Paper

Fault analysis: The hollow sleeve and the outer seal sleeve of the suction wheel body wear out, causing the wind wheel to lose steam, and the paper feeding is continuous and wasteful.

Remedy: According to the air supply control principle of the ZYH920 hybrid folder wind wheel, it can be modified on its own.

First, remove the valve sleeve that is connected to the solenoid core screw. The hexagonal head of the hexagonal head screw of M1 2 X100 is machined into a cone top. The other end of the screw rod is drilled with a deep hole of M5 X 25 and is connected with the electromagnet screw, and a bung spring is placed in the middle to ensure that the ejector rod runs freely. In the air path connected to the wind wheel, use "Plastic King" (polytetrafluoroethylene) to process the outside diameter and the inner diameter of the solenoid valve mounting base, the height of the column is 20mm, and the inner diameter L is the diameter of the middle 6mm plastic column. The top of the rod is matched with the top of the rod, and the other end is connected with the wind wheel gas circuit, and then it is fixed. Due to the use of "Plastic King", the plastic column uses more light and better airtightness. When the solenoid valve is closed, the air path is opened. When the solenoid valve is closed, the breather is reset to close the suction, and the closing performance can be controlled by adjusting the relative position of the top rod and the solenoid valve, and four or five years are available, and the effect is good.

Failure 2: Purple macro, ZYH660D second folding folder folding machine in the folded paper, the bottom angle is not uniform, wrinkle or break

Fault analysis; The mechanism of the paper press ball is different from that of the lake 'South Xinshun' folding machine. The upper and lower press bars are separated by a large distance, and when the paper is folded at 65g/m2, it is in Hunan. There is no difference between Xinshun folding machines but the problem is more obvious when folding paper. The speed of the hybrid folding machine is faster, and the medium impact force of the paper on the conveyor belt against the rear baffle is bound to be larger. When the spacing between the upper and lower press bars is large, the paper is likely to be curled; and the curling on both sides is inconsistent, and the rear end of the fold is not uniform. The edges are naturally missing and some of the folded pages are out of tolerance.

Remedy: Reduce the machine speed and reduce the backlash of the paper. The discharge of the ball can also be adjusted accordingly. Two rows of pressure balls are pressed on the sides of the back gauge to prevent the paper from curling upwards. In the front edge of the back gauge, the paper presses on four pressure balls in a row to prevent the paper from retracting, resulting in a misalignment. Adjust the cam feed time of the proximity switch. When the paper is in place, the folding knife will fall. Reduce the paper feed back to the back of the paper. The middle punch force will prevent the fold from wrinkling. Adjust the descent depth of the knife to prevent it from being carried away by the folding rollers when the machine is inching.

Judging whether the knife is falling too deep, just observe that the paper is taken away by the folding roller; and the folding knife does not start to lift too much. The edges of the paper are curled unevenly, and the folding knife is lowered too deeply. At this time, the folded paper is easy to break. The pressure of the edge of the folding roll can be adjusted to a small amount and the folding knife can be raised. On the side where the paper is not conveyed properly, pressurize the ball to increase the pressure and adjust the feeding belt so that the tension is consistent. In addition, ensure that the speed of the paper is the same after the paper exits from the tenth folding fence, and then use an indentation knife to provide the condition for the second fold. By adjusting the placement of the pressure ball, the pressure adjustment of the folding roller, the depth of the folding knife, the adjustment of the degree, the time of feeding the paper, the adjustment of the knife time, and the installation pressure. Knife: The method, the thin and soft paper of crescent, the second folds the bottom corners, wrinkles or breaks. Failure of the mouth.

South China Xinhua Printing Co., Ltd. Cheng Jiamin Source: Printing Technology