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A brief description of how to make a good plastic mold

Release date:2018-07-25 Click number:2998

Any product has the quality of the high and low points, a set of plastic moulds, some factories can only produce some low quality moulds, but some factories can make high quality plastic moulds. Then where are their differences? How is a good set of plastic moulds made in Kunshan?

A set of good plastic mold is caused by many factors, but each factor may affect the quality of the mold, material selection, processing equipment, processing environment and processing technology. Here we mainly analyze the processing technology of plastic mold to see what factors affect the quality of the plastic mold.

The first point is the injection pressure of the plastic mold, which is supplied by the hydraulic system of the injection system. The pressure of the hydraulic cylinder is transferred to the plastic solution by the injection machine screw, and the plastic dissolved in the injection machine's nozzle to enter the vertical channel, the main channel, the distributary channel through the injection nozzle of the injection molding machine, and then go through the gate and enter the mold cavity. This process is the process of accommodation, or can be called. A process for filling. The existence of pressure is to overcome the resistance in the flow of the dissolved body, or in turn, the resistance in the flow process needs to be offset by the pressure of the injection molding machine to ensure the smooth progress of the filling process.

The second factor is injection temperature, injection temperature is an important factor affecting injection pressure. The injection temperature must be controlled within a certain range. If the temperature is too low, the melted material will not plasticate. This will affect the quality of the molding parts and increase the difficulty of the process. If the temperature is too high, the raw materials will be easily decomposed. In the actual injection molding process, the injection temperature is often higher than the barrel temperature, the higher the value of the injection rate and the performance of the material is related, it can reach 30 degrees centigrade. This is due to the high heat generated when the melt is cut through the injection port.

The last point is the injection time of the plastic mold, which is the time needed for the plastic cavity filled with the cavity, which does not include the opening and closing time of the mold. Although the injection time is very short, the effect on the forming period is very small, but the adjustment of injection time has a great effect on the gate, channel and cavity pressure control. Reasonable injection time is conducive to ideal filling of the solution, and is of great significance for improving the surface quality and reducing dimensional tolerances.

The above three points is a set of Kunshan plastic mold manufacturing we need to master the key factors, of course, we can not ignore the selection of material, after all, no good steel will not have good plastic mold.


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昆山達亮塑膠模具有限公司

13962423309