1. The processing enterprise should first equip each pair of moulds with a resume card to record and count its use, care (lubrication, cleaning, rust prevention) and damage in detail. According to this, it can be found which parts and components have been damaged and the degree of wear and tear. Provide information and materials for finding and solving problems, as well as the moulding process parameters of the mould and the materials used in the product to shorten the test run time of the mould and improve production efficiency.

2. The processing enterprise should test the various performances of the mould under the normal operation of the injection moulding machine and the mould, and measure the size of the final moulded plastic part. Through this information, the current state of the mould can be determined and the cavity and core can be found. , The damage of the cooling system and the parting surface, etc., according to the information provided by the plastic parts, you can determine the damage state of the mould and maintenance measures.

3. Several important parts of the mould must be tracked and inspected: the function of ejection and guide parts is to ensure the opening and closing movement of the mould and ejection of plastic parts. If any part of them is stuck due to damage, it will lead to the suspension of production, so it should be Always keep the mould thimble and guide column lubricated (select the most suitable lubricant), and regularly check the thimble, guide post, etc. for deformation and surface damage. Once found, they should be replaced in time; after completing a production cycle, the mould Apply professional anti-rust oil to the working surface, motion and guide parts, especially the protection of the elastic strength of the bearing parts with gears, rack moulds and spring moulds to ensure that they are always in the best working state; with production As the time continues, the cooling channel is prone to deposit scale, rust, sludge, algae, etc., which makes the cross section of the cooling channel smaller and the cooling channel narrower, which greatly reduces the heat exchange rate between the coolant and the mould and increases the production cost of the enterprise. The cleaning should be paid attention to; for hot runner moulds, the maintenance of the heating and control system is helpful to prevent the occurrence of production failures, so it is especially Important. Therefore, after the end of each production cycle, the belt heaters, rod heaters, heating probes and thermocouples on the mould should be measured with an ohmmeter. If they are damaged, they should be replaced in time and carried out with the mould resume Make comparisons and make records so that problems can be found in time and countermeasures can be taken.

4. Pay attention to the surface maintenance of the mould, which directly affects the surface quality of the product, and the focus is to prevent rust. Therefore, it is particularly important to choose a suitable, high-quality, professional anti-rust oil. After the mould completes the production task, different methods should be used to carefully remove residual injection according to different injections. Copper rods, copper wires and professional mould cleaning agents can be used to remove residual injection and other deposits in the mould, and then air dried. It is forbidden to clean hard objects such as iron wire and steel bar to avoid scratching the surface. If there are rust spots caused by corrosive injection, use a grinder to polish and spray with professional anti-rust oil, and then store the mould in a dry, cool and dust-free place.

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