What is the precision injection mold for plastic products plastic parts?

 

Precision injection mold is used to make high-precision and high-quality plastic products in the production of plastic products. Compared with ordinary injection moulds, precision injection moulds have more stringent requirements in design, manufacturing and processing to meet the needs of small size, tolerance, complex shape, assembly, insertion, and waterproof.

First, the characteristics of precision injection mold

1. High precision requirements

Precision injection molds need to achieve micrometer manufacturing tolerance, mold parts in the processing to achieve micrometer tolerance, in order to control the tolerance of injection plastic products between 0.01mm-0.05mm. And in the mold design and processing process, we must consider the shrinkage rate of the material, processing accuracy and assembly accuracy and other factors.

 

2. Complex structure

In order to meet the needs of complex products, precision molds often have complex cavity structure and multiple release mechanism. This requires precise machining and ingenious structural design.

 

3. High quality materials

Precision molds usually use high-quality die steel, such as NAK80, H13, S136, SKD51 and so on. These materials have good wear resistance, polishing and heat treatment properties, which can ensure the service life of molds and product quality.

 

4. Precision machining technology

In the manufacture of precision molds, advanced processing technologies such as numerical control machining, precision grinding machine machining, discharge machining, and slow wire walking processing are widely used to achieve the required accuracy and surface quality.

 

Precision injection molding processing

 

Two, the design points of precision injection mold

1. Reasonable mold structure design

Under the premise of ensuring product quality, the mold design should simplify the structure as far as possible, and facilitate processing and maintenance. At the same time, it is necessary to consider the design of the cooling system, pouring system and exhaust system of the mold to improve production efficiency and product quality.

 

2. Precise size control

In the design process, it is necessary to accurately calculate the size and tolerance of the product, consider the fluidity and shrinkage of the material, and ensure that the final product meets the design requirements.

 

3. Material selection

According to the use of products and production batch, choose the appropriate mold material and surface treatment, and with periodic maintenance, to extend the life of the mold and reduce production costs.

 

Three, the application field of precision injection mold

Electronic communication: mobile phone shell, connectors, sensors and other products with high requirements for size and appearance.

Medical devices: Syringes, precision medical components and other products that need to meet strict hygiene and precision requirements.

Automotive industry: engine parts, instrument panels, precision gears and other key components.

Aerospace: Complex components made of high-performance engineering plastics that are subjected to special environmental conditions.

Fourth, the importance of precision injection molds

Precision injection mold is an indispensable basic tool in high-end manufacturing industry. Its quality directly affects the precision, performance and appearance of products. With the development of industrial products towards miniaturization, complexity and high performance, the market demand for precision injection molds is also growing.

 

V. Future development trends

With the continuous emergence of new materials, new processes and new technologies, precision injection molds will develop towards a more intelligent and automated direction. For example, the use of CAD/CAM/CAE and other digital technology for mold design and simulation can greatly shorten the development cycle and improve the design accuracy. At the same time, advanced processing equipment and technology, such as high-speed milling, five-axis machining, will also improve the level of mold manufacturing.

 

HUIWEN PLASTIC is a professional supplier of precision injection mold, focusing on precision connector mold, sensor mold, high temperature plastic injection molding (such as PEEK, LCP, PBT, PEI, PPS, PPSU, PA66 and other open mold injection production), TPU, TPE soft glue, vertical metal glue injection molding.