The operation of the blowing film unit requires a thorough inspection of the equipment

The operation of the blowing film unit requires a thorough inspection of the equipment

Comprehensive inspection equipment of the dalian blown film unit. Check whether the connections are correct and firm; Check whether the movement and moving parts are flexible, safe and reliable, whether the movement is correct, and the fault is found out in time. Carefully check the clearance of the die with the plug, make it uniform in circumference, and the interval value should meet the process requirement. Check whether the electrical system is grounded, safe and reliable, the water supply system and compressed air system are open and free of leakage.

Check whether the fan is normal, and the cooling water of the screw and cylinder is clear. Check whether the whole machine is clean and check whether the raw material is sundry. Pay attention to whether the temperature of the fuselage head and other parts meets the technological requirements, and maintain constant temperature for half an hour. It is necessary to carefully check the position of the wind ring, the clearance and the wind quantity, the Angle of the person's board, and the tightening mechanism of the traction roll. Start the rotating machine head gear, the head spin should be smooth, no abnormal noise and so on.

Membrane bubble filed after normal operation shall be immediately check membrane thickness, width, plasticizing quality and longitudinal shrinkage rate, cooperate to adjust the machine parts, host extrusion speed, drawing speed, the fan speed should be adjusted up and down to the specified requirements, keep it consistent. At the same time, the amount of compressed air, the wind ring gap size, temperature distribution, stable foam frame position, herringbone plate Angle, traction roll clamping force cooling condition to the various parts of the winding force and observation and adjustment, to conform to the standard. In order to obtain the uniform thickness and keep the high efficiency of the wind, we should always pay attention to the air volume size and distribution of the wind ring.

Start the main motor, operate at low speed, melt the material extrude, the material extrude and connect the air pump to pump air, forming the membrane bubble. Then immediately start the fan. (appropriate to adjust the air volume according to the frost line of the membrane, the air volume is too large, and the air volume is too high. Put the membrane tube into the traction roll and roll along the guide roller until winding. Observe whether vesicular deformation rapidly, after the completion of such as have deformation should be timely adjusted, first check whether the die clearance is adjustable, stable foam board by membrane bubble, whether if there is no problem to check whether there is open the doors and Windows, found after timely treatment. Observe whether the membrane blisters are inclined, and if inclined, use baffle at once.

Adjust the speed of the main motor according to the requirement of the production task, adjust the traction speed according to the thickness requirement. Open the rotate button to rotate the die head. After being membrane bubble stability, was carried out on the thin film thickness and width measurement, see whether to reach the required standard, (if the thickness of the thick, adjust the die clearance or reduced wind ring air volume, make further blowing film, also can improve the traction speed appropriately so that its thickness thinning; if the thickness of the slant thin. Width with air pump to control).