When replacing the oil seal, be careful not to install it backwards. Some piston rings are made of steel rings and some are rubber rings. Note that several interfaces of the steel ring are not in the same position. Be careful not to install the rubber ring upside down; Be careful not to damage the oil seal during installation, otherwise it will leak oil soon.
Extended data;
The working principle of injection molding machine is similar to that of injector. It is a process of injecting molten plasticized plastic (that is, viscous fluid state) into a closed mold cavity with the help of the thrust of a screw (or plunger), and curing to obtain a product.
Injection molding is a cyclic process, and each cycle mainly includes: quantitative feeding-melt plasticization-pressure injection molding-mold filling and cooling-mold opening and taking parts. Take out the plastic part, and then close the mold for the next cycle.
Operation items of injection molding machine: Operation items of injection molding machine include control keyboard operation, electric control system operation and hydraulic system operation. Selection of injection process action, feeding action, injection pressure, injection speed and ejection type, monitoring of temperature in each section of the barrel, adjustment of injection pressure and back pressure, etc.
Reference materials; Baidu Baike injection molding machine