How to maintain the injection mold?
The quality of the mold is directly related to the quality of the products.Due to the high production cost of the mold in the injection molding enterprise, the service life also directly affects the cost of injection molding products.Only by improving the quality of injection mold, maintaining and maintaining the injection mold, and extending its use cycle, can we reduce the cost and improve the efficiency of injection molding products.
Because of the variety of products, the mold change is more frequent. After the completion of a production cycle, the mould is generally stored in the storage until the next production cycle is used.But simply ignored the mould to save some of the processing enterprises. The rusting of the mold in the preservation period and the decrease of the surface finish, etc., causing the deterioration of product quality, high rejection rate, some mould even difficult to reuse, to cast people a lot of money to buy new mould, caused great waste.Data shows, the use and maintenance in the mold accounted for 15% 20%, factors affecting the service life of the injection mould service life can reach 800000 times, some foreign maintenance good mould can even be extended 2-3 times.However, due to neglect of maintenance, the service life of injection moulds is relatively short, which is only 1/5 to 1/3 of that of foreign countries.Therefore, it is very important to maintain the injection mold.
Injection mold technology content is very high, many components, if do not take the various components in the process of using and maintenance and maintenance, easy to damage, corrosion phenomenon, cause huge economic losses.Therefore, it is necessary to pay special attention to the maintenance and maintenance of the mould in the process of use, so as to ensure the long-term quality of the mould.To do this, processing enterprises should first give each pair of mould record card, detailed records, statistics and its use, the damage can be found on the basis of what kind of parts, components, has been damaged, the wear degree of size, to find and solve the problem of information data, and the mould molding process parameters, the materials used for the product, so as to shorten the test time of mould, improve production efficiency.
Processing enterprises should be in the injection molding machine, mold under normal operation, all kinds of mold test performance, and finally forming parts size measured, through these information can determine the existing state of mould, find out the cavity, core, cooling system and parting surface damage, according to the information provided by the plastic, can judge the mold damage status and maintenance measures.
The key parts of the mould must be tracked and tested.Ejection, guiding role is to ensure that the mold opening and closing movement and plastic ejection, if any of these parts stuck due to injury, will lead to production, so often should check whether ejection rod, guide pillar and so on the distortion and surface damage, once found, will change in time.Completion of a production cycle, to sports, guiding parts coated with anti-rust oil, especially should pay attention to with gear and bearing parts of the protective and spring rack mould stretch strength, to ensure its always in the best working state.In addition, the cleaning of cooling channels is of great importance to production efficiency and product quality.With production last time, the cooling way easy to deposit scale, rust, turbidity, sludge and algae, cooling flow channel section size, cooling channel narrow, greatly reduced the heat exchange between the coolant and the mold rate, increase the production cost, so we should pay attention to clean up on passage.For hot runner mold, the maintenance of heating and control system is helpful to prevent the occurrence of production failure. Therefore, it is particularly important.Accordingly. Each end of the production cycle in response to die band heater, heater, heating probe and thermocouple with ohmmeter measuring, if there are any damage, should change in time, and comparing with mould resume, recorded, in order to timely found the problem. The adoption of countermeasures.
To pay attention to the surface maintenance of the mold, it directly affects the surface quality of the product, the emphasis is to prevent corrosion.After the mould production task, should according to different injection to take different approaches to remove residual injection carefully, available copper rod, copper wire and soapy water to remove residual injection in the mold and other sediments. Then dry.Disables hard objects such as wire and steel bars to avoid scratching the surface.If corrosive injection molding is caused by rust, use the grinding machine to grind and polish, and apply anti-rust oil, and then place the mold in dry, cool, non-dust storage.
After a good maintenance and the maintenance of the mold, mold assembly, commissioning can shorten the time and reduce the production failure, make production running smoothly, to ensure product quality, reduce scrap loss, and reduce enterprise operating costs and fixed asset investment, when beginning, enterprises would be able to produce qualified products.For industrial enterprises, in the current market competition fierce situation, to help enterprises to give a helping hand.