How to calculate the clamping pressure？

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How to calculate the clamping pressure？


The relationship between "clamping pressure" and "projected area" and "plastic molding pressure" is as follows:

<A>Projected area of finished product(cm2)×<P>Plastic molding pressure(kg/cm2)=<F>Required clamping pressure(kg÷1000=t)

1. Case: one cavity finished product, ABS material. How much injection molding machine must be used?

<A> Projected area: (18 × 12) + (10 × 8) = 296 cm2
<P> Plastics: ABS refers to the plastic molding pressure gauge on the following page, ABS = 400 kg / cm2
Calculation: Because A × P = F (the above program)
<F> Therefore, 296 cm2 × 400 kg / cm2 = 118400 kg is converted into tons, it must be ÷ 1000, so 118400 ÷ 1000 = 118.4 tons (required clamping pressure)


2. Case: The shape and size of the finished product and the beer plastic material are as shown in the above figure. The output must be increased to two out of one. How much injection molding machine must be used?

<A> Projected area: (18 × 12) + (10 × 8) + (18 × 12) + (10 × 8) = 592 cm2
<P> Plastics: ABS refers to the plastic molding pressure gauge on the following page, ABS = 400kg / cm2
<F> Therefore, 592 cm2 × 400 kg / cm2 = 236800 kg is converted into tons, it needs to be 1000, so, 236800 kg ÷ 1000 = 236.8 tons (required clamping pressure)

Commonly used plastic pressure gauge


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