Injection mold maintenance skills and methods

Author: MULAN -Plastic Molding Manufacturer

How to judge the damage of the injection mold and the condition of the maintenance measures. We can let the processing enterprises test the various performances of the injection mold under the normal operation of the injection molding machine and the injection mold, and measure the size of the final molded plastic part. Finally, through this information, the current state of the injection mold can be determined and found. Find out where the cavity, core, cooling system and parting surface are damaged. These values ​​are calculated from exact measurements.

At the same time, it is necessary to focus on tracking and testing several important parts of the injection mold. It is mainly the ejection part and the guide part. It should be known that the function of the ejection and guide parts is to ensure the opening and closing movement of the injection mold and the ejection of the plastic part. If any part of it is stuck due to damage, it may lead to production stoppage. Keep the injection mold thimble and guide post lubricated, and regularly check whether the thimble, guide post, etc. are deformed and damaged on the surface. Once found, they should be replaced in time. There is no room for sloppyness in this.

In terms of maintenance, after completing a production cycle, apply professional anti-rust oil to the working surface, movement, and guide parts of the injection mold. Special attention should be paid to the bearing parts of the injection mold with gears, racks, and spring injection molds. Protection such as elastic strength to ensure that it is always in the best working condition. It takes a certain amount of effort to clean the runners. As the production time continues, scale, rust, silt and algae are deposited in the cooling channel, which makes the cross section of the cooling channel smaller and the cooling channel narrower, which greatly reduces the heat exchange rate between the cooling liquid and the injection mold and increases The production cost of the enterprise, so the cleaning of the runner should be paid attention to.

For hot runner injection molds, the maintenance of heating and control systems is helpful to prevent production failures, so it is very important. Therefore, after the end of each production cycle, the belt heater, rod heater, heating probe and thermocouple on the injection mold should be measured with an ohmmeter. Compare mold resumes and make records, so that problems can be found in time, and then correct measures can be taken. The maintenance of the surface of the injection mold cannot be ignored, it directly affects the surface quality of the product, the focus is to prevent corrosion, therefore, it is particularly important to choose a suitable, high-quality, professional anti-rust oil.

After the injection mold completes the production task, different methods should be used to carefully remove the residual injection molding according to different injection molds. Copper rods, copper wires and professional injection mold cleaning agents can be used to remove residual injection molding and other deposits in the injection mold, and then air dry. It is forbidden to use iron wire, steel rod and other hard objects to clean, so as not to scratch the surface. If there are rust spots caused by corrosive injection molding, use a grinder to grind and polish, and spray professional anti-rust oil, and then store the injection mold in a dry, cool, and dust-free place. Only in this way can it be completely air-dried and stored.

There is no shortcut to the maintenance of injection molds, and they are all down-to-earth and strictly follow the maintenance methods. For more information about injection molds, please visit the official website of Xingye: http://www.dgxingyesj.com/.