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Q injection molding jobs in wisconsin
MaxwellPearson
IanOwen Release Time: May 31, 2024, 12:25 PM
Injection molding machines work by melting plastic pellets and injecting the molten plastic into a mold under high pressure. The machine consists of two main parts: the injection unit and the clamping unit. The injection unit heats the plastic to a liquid state and then injects it into the mold. The clamping unit holds the mold in place under pressure to ensure the mold is filled completely and accurately. Once the plastic cools and solidifies, the mold opens, and the finished part is ejected. This process is highly efficient for mass production of plastic parts with complex shapes, as it allows for high precision and repeatability.
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Q how to calculate clamping tonnage for injection molding
MaxwellPearson
MaxGunter Release Time: May 30, 2024, 7:32 AM
Calculating the tonnage required for an injection molding machine involves understanding the projected area of the part (including any runners or gates) and the pressure required to inject the plastic material. The formula is: Tonnage = (Projected Area x Pressure) / 2000. The projected area is measured in square inches, and the pressure in pounds per square inch (PSI). Understanding the specific material’s injection pressure is crucial as this varies widely among different plastics. Additionally, it’s wise to add a safety factor (10-20%) to account for any unforeseen variances. Consulting material datasheets and leveraging experience with similar materials can provide insight into the necessary injection pressure. This calculation ensures the machine can generate enough clamping force to keep the mold closed during the injection process, which is critical for producing quality parts without defects like flash.
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