The function of the electromagnetic valve of the injection molding machine mainly controls the liquid path, so that the curved rod moves back and forth, and the mold clamps inside the injection molding machine to open and close. There are closed chambers in the solenoid valve, and there are through holes in each position. The through holes are connected to the oil pipe. The valve body is the hole for controlling the oil discharge, so that the hydraulic oil enters different oil discharge pipes.

There are 5 or 6 kinds of solenoid valves on the injection molding machine, all of which are called solenoid valves. Ensure that the cleaning of the solenoid valve is conducive to the smooth operation of the machine, so the solenoid valve should be cleaned regularly, and then connected, Feng Tiejun tells us about the steps of cleaning the solenoid valve.

1. We have to clean the solenoid valve, so we must disassemble the machine. Before disassembling, if the surface is dirty, first clean the surface with diesel to prepare for the next cleaning.

2. Remove the electromagnet and clean the valve body with diesel oil, and blow it off with compressed air.

3. Disassemble the caps at both ends of the valve and take out the valve core. Then flush all the holes with diesel oil, blow them off with compressed air, and repeat the cleaning operation at least three times. The strict number of cleaning times is 7 times.

4. For dirt or rust, it can be wiped off with metallographic sandpaper. It is not possible to use coarse sandpaper to ensure that the valve core and valve stem are not scratched.

5. When installing, the valve stem should be lightly pushed. In order to prevent the deviation, the valve hole is not brute force.

The above 5 points are the cleaning steps of the solenoid valve. It should be noted that the injection molding machine generally has a small amount of oil flowing out, and should be cleaned before dismantling. However, there should not be a large amount of gas entering the oil circuit. Since the air is opened when the oil passage is opened after the oil valve is removed, the gas in the hydraulic system must be discharged after installation. The practice is to simply move the valve so that the hydraulic system reciprocates all the way, and the gas can be discharged normally during the movement. If not, open the venting venting, just like the normal hydraulic system exhaust.

The above is the cleaning process of the solenoid valve and the problems that need to be paid attention to during cleaning. You can refer to the steps. However, for those who have no basic knowledge, it is best to use a professional valve to clean the solenoid valve to avoid damage to the solenoid valve of the injection molding machine.