How to maintain flat screen printing machinery and equipment

As a printing machine, some faults will inevitably occur in the process of using the screen printing machine, especially the high-precision automatic screen printing machine. The common faults of screen printing machine are unresponsive operation, slow action, automatic or semi-automatic failure, automatic function failure, suction table failure and so on. When something goes wrong, stop the machine for maintenance in time. When using flat screen printing machinery and equipment, we should pay attention to the maintenance of screen printing machine. Let's take a look at how to maintain flat screen printing machinery and equipment. First, the screen printing machine common faults and maintenance methods

Screen printing machine is a printing mechanical equipment. Some problems will inevitably occur in the process of use, and sometimes some minor faults can be solved by themselves. Here are some common screen printing machine failures and maintenance methods:

1, the screen printing machine will start immediately without stepping on the foot switch of the screen printing machine when it starts semi-automatically.

The main reason of this kind of fault is that the foot switch is damaged or there is water in the socket of the foot switch, which leads to short circuit and causes this kind of fault. In addition, there may be a problem with manually turning on the button switch. The maintenance method is to replace the manually opened switch or socket or button switch with a new one, or disassemble the opened switch to repair the damaged parts.

2. When the screen printing machine works in the semi-automatic working state, the slide seat of the foot switch descends, and then rises again after releasing the foot.

This kind of fault is usually caused by the damage of the switch on the left side of the cross slider or the disconnection of the connecting wire. The solution is to replace the switch or connect the switch connecting wire.

3. When the screen printing machine is in semi-automatic working state, press the foot switch to put down the slide seat, and the printing seat will not move after moving to the left.

The cause of the failure may be that the left proximity switch of the transverse bracket is not sensed or has a problem. The solution is to adjust the sensing point of the left switch or replace the proximity switch. In addition, the foot switch is also caused by this fault. The solution is to adjust the switch in the foot switch, repair the microswitch or replace it.

4. All manual and semi-automatic actions are unresponsive, but the power light is on.

The general reason for this failure is that the fuse on the low voltage side is blown, resulting in no air source entering, and all the solenoid valves are faulty. The problem to be solved is to replace the low-voltage side fuse and check whether the pressure reaches 4-6P. In this case, it is very unlikely that all solenoid valves have faults, and most of the connections are broken.

5. After the switch is activated, the screen printing machine moves half a beat when it rises and lifts the plate.

The reason for this failure is that something is blocking the control solenoid valve or the solenoid valve is out of order. The solution is to replace the solenoid valve or repair it.

6, automatic or semi-automatic does not drop the line

This problem occurs because the proximity switch on the right side of the crossbar is faulty or not sensed, and the connection point of the single-acting switch may be damaged. To solve this problem, you can change the proximity switch on the right to adjust the induction of the proximity switch.

7. The automatic function of the screen printing machine cannot be started.

This kind of fault is caused by the normally closed microswitch of the upper and lower cylinders, the contact can not be conducted or the timer is damaged. The solution is to repair the switch or replace the timer.

8, screen printing table does not inhale

It may be that the suction motor is burnt out, or the contactor that controls the operation of the motor is damaged, the solenoid valve that controls suction is faulty, and the suction selection switch is faulty. The solution is to repair the circuit or replace the corresponding components.

9. The vertical slide rail of the screen printing machine rises slowly.

The reason is that the bearing is oil-free or the cylinder piston itself is worn, and the shaft is bent by magnetic collision. The solution is to replenish the oil, replace the piston and adjust the shaft position.

Second, how to maintain the flat screen printing machinery and equipment

Flat screen printing machinery and equipment is commonly known as screen printing machine. In order to prevent frequent failures and affect the normal use and service life of the machine, it is necessary to do a good job in the maintenance of the screen printing machine. The maintenance of screen printing machine mainly pays attention to the following aspects:

1, Daily Maintenance of Screen Printing Machine

(1) Users should wipe the screen printing machine at least once a week and refuel it as needed.

(2) Regularly check the accumulated water in the filter cup of the screen printing machine, and drain it once per shift to avoid bringing water into the cylinder.

(3) Add lubricating oil to each lubricating point regularly to ensure the normal operation of screen printing machine equipment;

(4) Before starting the machine every time, you must know the working range of the machine, connect the air source and power supply, and check the operation of the machine. Only when it runs normally can it be put into production.

(5) Full touch screen controls the whole machine. Because the touch screen is easy to be damaged, it is forbidden to hit or scrape with hard objects and sharp tools.

(6) Please try to keep the screen printing equipment clean. If dirt appears, please wipe it with a soft and clean dry cloth. If dirt is difficult to remove, you can add a little neutral detergent to wipe it, and alcohol or thinner is strictly prohibited.

2. Maintenance of screen printing machine

(1) No tools, weights, fixtures, knives, workpieces and raw materials can be placed on the screen printing machine equipment.

(2) Ensure that the joint between the movable guide surface and the guide surface of the screen printing machine is free of debris, dust, oil stains, scratches and scratches.

(3) Do not disassemble the touch screen and other parts of the screen printing machine without the guidance of a professional master.

(4) If the screen printing machine is not used for a long time, it should be wiped clean and placed in a cool, dry and well-ventilated environment.

(5) When the screen printing machine fails, you must immediately press the emergency stop switch and turn off the main power supply, and notify the maintenance personnel for maintenance in time.

(6) Regularly survey, check and adjust the accuracy of the screen printing machine, and conduct fault analysis and state monitoring.