Methods to improve the quality of injection molds for plastic products

The quality of injection molds can be evaluated from the following aspects:

The stability and conformity of the size of the Injection molding process products, the smoothness and beauty of the product surface, the utilization rate of plastic raw materials, etc.;

The life of the injection mold: On the premise of ensuring product quality, the number of cycles that the mold can be used can also be called the number of products produced;

The ease of use of the mold: whether it is the most convenient to use, whether it is easy to demould, and whether the production auxiliary time (waiting time) is as short as possible; as well as the cost of mold maintenance and the length of the mold maintenance cycle, etc.

The basic way to improve the quality of the mold is to consider everything when designing the mold, including the selection of mold materials, the usability and safety of the mold structure, the processability of the mold parts and the convenience of mold maintenance. These must be considered during the design. Taking into account the trade-off of comprehensive performance, the favorable factors are maximized.

The manufacturing process of the mold is also a very important part to ensure the quality of the mold. The processing method and processing accuracy during the mold manufacturing process will also affect the service life and ease of use of the mold. The accuracy of each component directly affects the overall assembly of the mold. Considering that the accuracy cannot reach 100%, it is necessary to improve the processing of mold parts by improving the processing methods of the parts and improving the technical level of the mold fitters in the mold grinding process. Accuracy. The surface of the main molded parts of the mold is strengthened to improve the surface wear resistance of the mold parts, thereby better improving the quality of the mold.

The correct use and maintenance of molds is also a major factor in improving the quality of molds. For example: the installation and debugging method of the mold should be appropriate. If there is a hot runner, the power wiring must be correct and the cooling water path must meet the design requirements. During the production of the mold, the parameters of the injection molding machine, die-casting machine, and press must comply with the design requirements. etc. When using the mold correctly, it is also necessary to perform regular maintenance on the mold. The guide pillars, guide bushes and other parts with relative movement of the mold should be regularly filled with lubricating oil. For molds such as forging molds, plastic molds, and die-casting molds, the Lubricant or mold release agent should be sprayed on the surface of the formed parts before molding.