Injection molding machine (abbreviated as injection machine or injection molding machine) is the main molding equipment that uses plastic molding molds to produce various shapes of plastic products from thermoplastic or thermosetting materials. Injection molding is achieved through injection molding machines and molds.
Main types
Rubber injection molding:
Rubber injection molding is a production method that directly injects rubber material from the barrel into the mold for vulcanization. The advantages of rubber injection molding are: although it is an intermittent operation, the molding cycle is short, the production efficiency is high, the preparation process of raw materials is eliminated, the labor intensity is low, and the product quality is excellent.Plastic injection molding:
Plastic injection molding is a method of molding plastic products, in which molten plastic is injected into a plastic mold under pressure and cooled to form various plastic parts. There are mechanical injection molding machines specifically designed for injection molding. The most commonly used plastics are polyethylene, polypropylene, ABS, PA, polystyrene, etc.Injection molding:
The resulting shape is often the final product, and no further processing is required before installation or use as the final product. Many details, such as protrusions, ribs, and threads, can be formed in one step of injection molding.Fundamentals of Craftsmanship
- The purpose, operation, and results of temperature, pressure, speed, and cooling control
- How does the adjustment of injection molding machine settings affect the process and quality
- Optimize screw control settings
- Multi stage filling and multi-stage pressure control; The Influence of Crystallization, Non Crystallization, and Molecular/Fiber Alignment on Process and Quality
- The influence of internal stress, cooling rate, and plastic shrinkage on the quality of plastic parts
- Plastic rheology: how plastics flow, align, and change viscosity, shear and molecular/fiber alignment relationships
- The relationship between the pouring system, cooling system, mold structure, and injection molding process
Problem analysis and solution
Description and cause analysis of common injection molding problems such as shrinkage, shrinkage, insufficient mold, burrs, weld marks, silver wire, spray marks, burning, warping deformation, cracking/rupture, size deviation, and other issues, as well as solutions in mold design, molding process control, product design, and plastic materials.- Analysis of Reasons for Insufficient Glue and Insufficient Mold Around Injection Parts and Solutions
- Analysis of the causes of burrs and their solutions
- Analysis and Solutions for Surface Shrinkage and Shrinkage (Vacuum Bubbles) of Injection Molding Parts
- Analysis and solutions to the causes of silver streaks (material flowers, water splashes), burning, and air streaks
- Cause analysis and solutions for water ripples and flow marks on the surface of injection molded parts
- Cause analysis and solutions for water streaks (weld marks) and spray patterns (snake patterns) on the surface of injection molded parts
- Analysis and Solutions for Surface Cracks (Crackings) and Top Whitening (Top Explosions) in Injection Molding Parts
- Analysis and solutions to the causes of color difference, poor gloss, color mixing, black stripes, and black spots on the surface of injection molded parts
- Cause analysis and solutions for warpage deformation and internal stress cracking of injection molded parts
- Cause analysis and solutions for dimensional deviation of injection molded parts
- Analysis and solutions to the causes of mold sticking, dragging (pulling), and whitening of injection molded parts
- Reason analysis and solutions for insufficient transparency and strength (brittle fracture) of injection molded parts
- Cause analysis and solutions for cold spots and peeling (delamination) on the surface of injection molded parts
- Cause analysis and solutions for poor metal inserts in injection molded parts
- Analysis and improvement measures for nozzle drooling (runny nose), glue leakage, nozzle drawing, nozzle blockage, and difficulty in mold opening
- Using CAE mold flow analysis technology to quickly and effectively solve injection site problems