The temperature of the plastic injection mould will reduce the standard accuracy of the product, which will reduce the qualified rate of the product. If the temperature difference between the mold core and the cavity is too large, the plastic part will be shortened unevenly, resulting in the bending and deformation of the product, which will affect the appearance of the part. If the temperature of plastic injection mould is too high, the product will be deformed during and after demoulding, and its shape and standard accuracy will be reduced.
For the crystalline plastic of plastic Injection mould, the use of the high temperature of plastic Injection mould is conducive to the progress of the crystallization process and prevents the standard change during storage or use. Regarding plastic flexible plastics, the use of low-temperature plastic molds can reduce the molding shortening rate, improve the standard accuracy of parts, shorten the molding cycle, and improve production efficiency.
When plastic Injection mould is filled at low temperature, if the melting speed is not high enough, the internal stress of the product will increase, which will easily cause warping deformation or application cracking, especially for some high-viscosity plastics. The temperature of plastic injection mould will reduce the fluidity of the plastic melt, making the parts unclear, or even filling the mould with dissatisfaction. decreased mechanical properties. Too low plastic mold temperature will also make the surface of the product not smooth and cause various surface defects.
Pre-inspection of plastic Injection mould
Once the plastic injection mould is installed on the mold, inspection should be carried out to find out the quality problems in time, and the mold should be repaired to avoid removing the mold after being installed on the machine. time mistake.
Plastic Injection mould oblique guide mould device:
When installing the mold, the two people should cooperate closely and pay attention to safety. If there is a mold with a lateral parting structure, the slider should be installed in a horizontal position, that is, the movable block moves left and right.
Fastening of plastic Injection mould
When the mold positioning ring is loaded into the positioning ring seat of the fixed template on the injection molding machine, close the mold at a very slow speed, so that the moving template presses the mold lightly, and then put on the pressing plate, and the pressing plate must be fitted with a pad It is necessary to install 4 pieces on the upper and lower sides of the pressing plate. When the pressing plate is placed, it is necessary to pay attention to adjusting the height of the adjusting screw to the same height as the dying foot, that is, the pressing plate should be flat. If the pressing plate is inclined, the dying foot of the mold cannot be pressed very tightly. The side of the pressing plate should not be close to the mold to avoid friction damage to the mold.