Application of Injection Molding Machine Drying System Equipment

Application explanation of injection molding machine drying system equipment. In the field of injection molding, although the injection molding machine drying system is often not noticed by everyone, it is an important part to ensure the quality of plastic products. It is responsible for removing moisture from plastic raw materials, and the moisture content has an impact on the performance, appearance and even the smooth progress of the production process of plastic products.

Application explanation of injection molding machine drying system equipment:
1. Plastic raw materials are easy to absorb moisture in the air during storage and transportation. When the raw materials containing moisture enter the injection molding machine barrel and melt under heat, the moisture will vaporize rapidly, forming bubbles or pores inside the product, weakening the mechanical strength and dimensional stability of the product.
2. For example, when producing electronic accessories, if there are bubbles inside the product, it may cause abnormal conductivity of the accessories or damage due to uneven force in subsequent use; for plastic products with high appearance requirements, such as automotive interior parts or other plastic products, bubbles will cause surface defects, affect the appearance, and reduce product quality.

3. The working principle of the injection molding machine drying system is mainly based on the drying effect of hot air on raw materials. The drying hopper is usually made of stainless steel and has heat insulation properties to reduce heat loss. Inside the hopper, hot air enters evenly through the air inlet at the bottom or side and fully contacts the plastic raw materials. The moisture in the raw materials evaporates into water vapor under the action of hot air, and then is discharged from the exhaust port at the top of the hopper with the flow of hot air.
4. In order to improve the drying efficiency, the drying system is usually equipped with a heating device, a fan and a temperature control system. The heating device heats the air to an appropriate temperature, and the fan causes the hot air to circulate in the hopper to ensure that the raw materials are heated evenly. The temperature control system can monitor and adjust the temperature in the hopper in real time to keep it within the set drying temperature range to avoid affecting the drying effect due to excessively high or low temperatures.

5. In actual production, the operation and maintenance of the drying system of the injection molding machine. The operator needs to reasonably set parameters such as drying temperature, drying time and air flow according to the characteristics of different plastic raw materials. For example, for nylon raw materials with strong water absorption, the drying temperature usually needs to be controlled between 80-100℃, and the drying time is 4-6 hours; for raw materials with weak water absorption such as polypropylene, the drying temperature can be appropriately reduced to 60-80℃, and the drying time is 2-4 hours. At the same time, the drying system should be regularly maintained, the working status of components such as the heating device, fan, and temperature sensor should be checked, and the accumulated materials and dust in the hopper should be cleaned in time to ensure the normal operation of the system.

In addition, the intelligent control application of the injection molding machine drying system can automatically adjust the drying parameters according to production needs and reduce the impact of human factors on the drying quality. The injection molding machine drying system plays a good role in the production of plastic products. By understanding its working principle, correct operation and maintenance, the role of the drying system can be better played, providing a better foundation for the production of plastic products.