Maintenance skills and methods for automobile injection molds
May 04, 2022
How to judge the damage of the mold and the repair method. We can enable processing enterprises to check the various functions of the mold under the normal operation of the injection molding machine and mold, and measure the size of the final molded plastic part. Finally, through this information, the existing condition of the automobile injection mold can be confirmed, and the information can be found out. Damaged locations of cavities, cores, cooling systems, and parting surfaces. These values are calculated from accurate measurements.
At the same time, it is necessary to carry out key tracking and testing of several important parts of automobile injection molds. It is mainly the ejector parts and the guide parts. It should be known that the function of the ejector and guide parts is to ensure the opening and closing of the mold and the ejection of the plastic parts. If any part is stuck due to damage, it may lead to production stoppage, so it is necessary to always insist on Lubricate the mold thimble and guide post, and regularly check whether the thimble and guide post are deformed and surface damage. Once found, they should be replaced in time. This cannot be taken lightly.
In terms of maintenance, after finishing a production cycle, it is necessary to apply professional anti-rust oil on the working surface, movement, and guide parts of the mold. Special attention should be paid to the elastic strength of the bearing parts with gears, rack molds and spring molds. etc. to ensure that it is always in a better working condition.
It takes a certain amount of effort to clean up the runner. As the production time continues, the cooling channel accumulates scale, rust, sludge and algae, etc., which all make the cooling channel section smaller and the cooling channel narrower, which greatly reduces the heat exchange rate between the cooling liquid and the mold, and increases the production of the enterprise. Therefore, attention should be paid to the cleaning of the runner.
For hot runner molds, the maintenance of heating and control systems is very important to avoid production failures. Therefore, after each production cycle, the belt heaters, rod heaters, heating probes and thermocouples on the mold should be measured with an ohmmeter, and those that are damaged should be replaced in time, and the mold should be reviewed with the mold. Tables are compared and recorded, so that problems can be found in time, and then the correct method can be adopted.
The maintenance of the surface of automobile injection molds cannot be ignored. It directly affects the surface quality of the product. The key is to avoid rust. Therefore, it is particularly important to choose a suitable, high-quality and professional anti-rust oil. When the mold ends its production mission, different methods should be used to carefully remove the remaining injection molding according to different injection molding methods. Copper rods, copper wires and professional mold cleaning agents can be used to remove the remaining injection molding and other deposits in the mold, and then air dry.
Avoid using iron wires, steel bars and other solid objects to clean up to avoid scratching 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 mold in a monotonous, cool, dust-free place, only in this way can it be thoroughly air-dried and preserved. There are no shortcuts in the maintenance of injection molds, and they are all conscientiously and strictly followed the maintenance methods.
