Responsibilities of injection molding technician

1, prepare the upper and lower molds of each machine in the workshop, monitor the molds produced by the machines in the workshop, and prevent the destruction caused by human factors; ?

2, responsible for machine process debugging, product quality control; ?

3. Responsible for mold lubrication (maintenance) and production operation;

4. Observe the operation of equipment to prevent equipment failure;

5. Check whether the tools are complete and the instructions are in place before coming off work;

6. Record the equipment and molds that can't be produced normally and report them for maintenance;

7, after receiving the notice to quickly turn the mold, it is forbidden to delay.

Extended data

Temperature control of injection molding

1, barrel temperature: The temperatures to be controlled during injection molding include barrel temperature, nozzle temperature and mold temperature. The first two temperatures mainly affect the plasticization and flow of plastics, while the latter mainly affects the flow and cooling of plastics.

The flowing temperature of each plastic is different, and the flowing temperature and decomposition temperature of the same plastic are different because of its different source or brand. This is because the average molecular weight and molecular weight distribution are different, and the plasticizing process of plastics in different types of injection molding machines is also different, so the temperature of the barrel is also different.

2. Nozzle temperature: The nozzle temperature is usually slightly lower than the highest temperature of the barrel, which is to prevent the "salivation phenomenon" that may occur in the straight-through nozzle. The nozzle temperature should not be too low, otherwise the molten material will solidify prematurely, blocking the nozzle, or the product performance will be affected because the solidified material is injected into the mold cavity.

3. Mold temperature: Mold temperature has a great influence on the internal performance and appearance quality of products. Mold temperature depends on the crystallinity of plastics, the size and structure of products, performance requirements and other technological conditions (melt temperature, injection speed and pressure, molding cycle, etc.). )

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