Plastic Injection Food Box Mould
1). Basic structure and working principle of plastic lunch box mold
Plastic lunch box mold is mainly composed of molding parts, pouring system, cooling system, demoulding mechanism, etc. Molding parts are mainly used to shape and size plastic lunch boxes; pouring system transports plastic melt to molding parts; cooling system is mainly used to control mold temperature and increase the cooling speed of plastic products; demoulding mechanism ensures smooth demoulding of plastic products.
2). Optimization strategy for plastic lunch box mold design
1. Selection of mold material and heat treatment process
The selection of mold material has a great influence on mold performance. For different types of plastic lunch boxes, mold materials with high strength, corrosion resistance, wear resistance and other characteristics should be selected. At the same time, a reasonable heat treatment process can effectively improve the hardness and surface roughness of the mold, thereby increasing the service life of the mold.
2. Design of mold pouring system
The pouring system is the key channel for plastic melt to flow from the injection machine nozzle into the mold. When designing the pouring system, it is necessary to reasonably determine the gate position and size, improve the fluidity of the melt, and reduce the pressure loss of the pouring system. The integrated design of runner and gate can effectively improve the molding efficiency and reduce energy loss.
3. Optimization of cooling system
The optimization of cooling system is of great significance to improve the production efficiency of mold and reduce the residual stress of products. By reasonably distributing cooling water channels, increasing coolant flow and optimizing cooling time, the cooling efficiency of mold can be significantly improved, and the shrinkage rate and residual stress of products can be reduced.
4. Design of demoulding mechanism
The key to the design of demoulding mechanism is to ensure smooth and complete demoulding of products. When designing the demoulding mechanism, the shape, size and structural characteristics of the product and the structural characteristics of the mold should be fully considered to select the appropriate demoulding force and demoulding angle. At the same time, a secondary demoulding mechanism can be used to improve demoulding efficiency and accuracy.
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