Precision injection mold requirements

1. Design requirements

1. High precision and stability
The mold design must meet the dimensional accuracy requirements of the product, which usually requires the accuracy to reach the micron level, and the injection plastic products require the accuracy of 0.01mm-0.05mm. This requires full consideration of factors such as material shrinkage, machining accuracy and assembly accuracy during the design process.

2. Optimized flow path design
The design of pouring system directly affects the flow state of plastics and the quality of products. It is necessary to use CAE analysis software to simulate the flow path to ensure that the plastic melt is evenly filled in the cavity to avoid defects such as bubbles and weld marks.

3. Efficient cooling system
The design of cooling system affects production efficiency and product quality. According to the structure and size of the product, the cooling circuit needs to be rationally arranged to achieve rapid and uniform cooling and reduce the molding cycle.

4. Reasonable release mechanism
For complex products, it is necessary to design a variety of demoulding mechanisms, such as inclined top, core withdrawal, gas-assisted demoulding, etc., to ensure that the product is successfully demoulded

without cracking and deformation.

Vertical plastic injection molding

2. material requirements
1. High-quality mold steel
Choose high-quality die steel, such as S136, H13, NAK80, etc., with good strength, hardness, wear resistance and polishing properties.

2. Surface treatment
According to the requirements of the product, the surface treatment of the mold cavity such as nitriding and chrome plating is carried out to improve the hardness and corrosion resistance of the mold and extend the service life.

3. processing and manufacturing requirements
1. Precision machining equipment
The use of high-precision machining equipment, such as precision grinding machine, curve grinding machine, CNC CNC machine, slow wire cutting, EDM forming machine, etc., to ensure the processing accuracy and surface quality.

2. Fine processing technology
Adopt high-precision machining methods, such as precision grinding, polishing, ultra-precision machining, etc., to achieve the required dimensional accuracy and surface roughness.

3. Strict quality control
In the process of processing, it is necessary to carry out real-time monitoring and testing of key dimensions and parts, and use high-precision testing equipment such as CMM to ensure that each part meets the design requirements.

4. Assembly and adjustment requirements
1. Precision assembly
The formation of the mold requires experienced technicians to ensure that the coordination gap and accuracy of the parts meet the design requirements, and the moving parts run smoothly without stuck.

2. Test and optimization
After the mold assembly is completed, it is necessary to test the mold, test the performance of the mold, and adjust and optimize the mold according to the test results to ensure the stability and product quality during mass production.

5. Use and maintenance requirements
1. Correct usage parameters
In the injection molding production, it is necessary to set the appropriate injection molding process parameters, such as temperature, pressure, speed, cooling time, etc., according to the characteristics of the products and materials.

2. Regular maintenance
Carry out regular cleaning and maintenance of the mold, such as cleaning residue, checking wear, applying anti-rust oil, etc., to prevent mold damage and quality problems.

3. Perform safe operations
Strictly abide by the operating procedures to prevent mold damage or production accidents caused by misoperation.