Plastic mold manufacturers share the design of injection mold threads and the thread processing methods for injection molded products
Date: March 26, 2024
The design of injection mold threads and the processing methods of injection molded product threads are important and worthy of in-depth exploration in the field of plastic processing. In injection molds, threads play the role of both internal and external threads, and the thread profiles of injection molded products can be divided into six types: standard threads, rectangular threads, trapezoidal threads, serrated threads, circular arc threads, and V-shaped threads. Suitable thread forms need to be selected for different application scenarios. For example, serrated threads can be chosen in situations with high strength requirements, while multi head circular arc threads are commonly used in common packaging bottles and bottle cap threads. This helps to tighten the bottle cap within one or two turns.
Due to the relatively low strength of plastic molds and the softness of plastic itself, larger thread sizes should be selected when designing threads on plastic parts. Especially when the thread diameter is small, it is not advisable to use fine thread, otherwise it will be difficult to achieve ideal strength due to the shrinkage of plastic threads. Therefore, according to specific circumstances, one can refer to corresponding norms and standards for selection.
On injection molded products, the main methods for processing threads include the following. Firstly, threads are directly formed during the molding process. Secondly, subsequent mechanical cutting methods are used for processing. Finally, metal thread inserts are used. This method is mainly suitable for situations that require frequent assembly and disassembly and require high mechanical strength.
Overall, the design of injection mold threads and the processing methods for injection molded product threads are complex issues that require comprehensive consideration of material properties, product applications, and processing techniques. By reasonable design and processing, the quality and reliability of threads can be ensured, thereby improving the overall quality and performance of injection molded products.
