With the increasing demand for food safety, plastic bottle cap is an essential factor to carry food safety, and improving the quality of plastic bottle cap is an important way to build a harmonious society.This paper analyzes the main characteristics and key technical points of the plastic bottle cap mould in China, and analyzes the design and processing of the mould with a typical plastic bottle cap.
1. Characteristics and key technology of plastic bottle cap mold.
Plastic cap production is characterized by high speed rotary compression moulding unit, ensure that each compression molding mould module has independent running unit, which greatly improves the flexibility of production, reduce the mold production cost, prolong the service life.
The compression moulding mold is the foundation of plastic bottle cap processing, and the following technologies must be done to realize the molding tool processing technology:
The first is to choose the mold material reasonably, ensure that the molds must have extremely high strength and wear resistance and precise size control;
The second is material heat treatment, the material treatment technology is the present China's pressure plastic technology and the foreign technology gap in the centralized embodiment;
Three is the precision processing of the thread surface, the thread determines the various technology of the plastic bottle cap, so this link belongs to the main link, it mainly consists of turning, buckle, point spark processing and so on;
Four is high precision grinding, grinding is the final process, which has a key effect on the quality of bottle cap.
2.Design of plastic bottle cap mold.
According to the requirements of plastic bottle cap structure, the design and assembly of plastic bottle cap compression mold is shown in figure 2.