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Here is a detailed introduction on "How to select an injection molding machine" for you:
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Release time:
2024/07/17
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Here is a detailed introduction on "How to select an injection molding machine" for you:
First, clarify production requirements
Firstly, you need to clarify your production requirements, including the size, weight, shape complexity, production batch size, and precision requirements of the products.
For example, if you plan to produce small precision electronic parts, the requirements for the dimensional accuracy and surface quality of the products will be very high; if you are producing large plastic containers, a larger injection volume and clamping force will be required.
Second, Injection volume
The injection volume is one of the key parameters for selecting an injection molding machine. The injection volume should meet the weight requirements of the products you produce, and at the same time, a certain margin should be considered to adapt to the changes in the production process.
For example, if the weight of a single product is 100g, it is recommended to select an injection molding machine with an injection volume of 120 - 150g.
Third, Clamping force
The clamping force should be able to overcome the mold expansion force of the plastic melt on the mold during the injection process to ensure that the mold will not be opened during the injection process.
Generally speaking, the calculation of the clamping force can refer to the formula: Clamping force (kN) = Projected area of the product on the parting surface (cm²) × Cavity pressure (MPa) ÷ 10.
For example, the projected area of the product on the parting surface is 500 cm², and the cavity pressure is generally 20 - 40 MPa. If it is 30 MPa, then the clamping force = 500×30÷10 = 15000 kN
Fourth, Injection pressure
The injection pressure needs to be large enough to ensure that the plastic melt can smoothly fill the mold cavity. Different plastic materials and product structures have different requirements for injection pressure.
For example, for thin-walled products or products with a long flow path, a higher injection pressure is required.
Fifth, Mold opening stroke
The mold opening stroke should meet the requirements for removing the product, and the height of the product and the space required for removing the product should be considered.
Sixth, Machine stability and reliability
Select injection molding machine models and brands with good stability and reliability. You can evaluate by looking at the manufacturer's production history, market reputation, after-sales service, etc.
For example, some well-known brand injection molding machines have performed well in terms of stability and reliability after years of market verification.
Seventh, Energy consumption and efficiency
Pay attention to the energy consumption level and production efficiency of the injection molding machine. An injection molding machine with low energy consumption can reduce production costs, and a machine with high production efficiency can increase production capacity.
Eighth, Price and budget
Select the appropriate injection molding machine according to your budget. However, you cannot only be guided by the price, but also need to comprehensively consider the performance and quality of the machine.
I hope the above content is helpful for you to select an injection molding machine.
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