How to design and manufacture an injection mold that will not be damaged?

How to design and manufacture the injection mold without damage, there are two key points: the first mold design must consider the basic structure strength calculation and structural defects; The second injection mold processing and assembly fully understand the shape of the parts and surface quality, matching accuracy. Only by striking a balance between these two key points can we better design and manufacture injection-free molds.

Why is the injection mold damaged?

1. The main reason is that the injection mold will be subjected to various external forces different from the assembly in the process of injection molding. The injection mold needs to have enough strength and the compression stress generated by the clamping force of several tons to hundreds of tons.

2. Secondly, in order for the molten resin to be fully filled into the cavity through the main runner and runner, the resin must be allowed to flow into the mold under pressurized conditions. More importantly, this pressure is usually applied for a very short period of time, less than 1 second, so that the core pin and the cavity wall are subjected to considerable impact.

3. In addition, the ejector rod is used to push the ejector pin in the ejector part. However, if the ejector pin does not operate smoothly, excessive compression stress will be applied to the ejector pin, and in some cases, the elongated ejector pin will buckle and break.

The strength calculation and structural defects of the basic structure must be considered in the design

If the strength calculation of the basic structure and the structural defects are left behind, it may result in the mold being manufactured with fatal defects that cannot be eliminated by fine tuning. Therefore, in order to prevent the mold from being damaged, when designing the mold, it is very important to define the basic use environment with numerical values and verify the actual operation process of the mold in advance.

Fully understand the shape, surface quality and matching accuracy of the parts during injection mold processing and assembly

In the mold parts machining or assembly, debugging, fully understand the shape of the parts and surface quality, matching accuracy, and in the processing will be taken into consideration, it is also very important. In machining, as long as the dimensions, accuracy and tolerances specified in the drawings are met, the minimum responsibility can be achieved, but in order to make a better die, it is necessary to go further and fully understand the function of the die parts.

The mission of Fanstar is to master the core technology of injection molding production, communicate and analyze the technology before mold production with customers from the production needs of finished products, so that the mold delivery time is short, the service life is long, the rapid mass production and the finished product quality is excellent! Have the need of injection mold welcome to contact us! How to design and manufacture the injection mold without damage not only requires sophisticated equipment, perfect production management process but also first-class quality and service awareness.

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