Mold protection and maintenance

1. The cutting edge must be sharpened after long time use of the mold, and the cutting edge surface must be demagnetized after grinding. The mold application company should make detailed records, calculate its application, care (smoothing, cleaning, rust prevention) and damage, based on which parts and components have been damaged, and the degree of wear, so as to provide information for discovering and solving problems. And the molding process parameters of the mold and the materials used in the product to shorten the trial run time of the mold and increase the output power. The various functions of the mold should be tested under the normal working conditions of the injection molding machine and the mold, and the specifications of the final molded plastic part should be measured. After this information can be used to confirm the current situation of the mold, find out the cavity, core, and cooling Based on the information provided by the plastic parts, the damage location of the system and parting surface can be used to determine the damage of the mold and the repair method.
2. The spring Z is easy to be damaged during the use of springs and other elastic parts, usually cracking and deformation. The method adopted is replacement. In the replacement process, you must pay attention to the specification and type of the spring. The specification and type of the spring are recognized by the three items of color, outer diameter and length. It can be replaced only when the three items are the same. . The quality of imported spring is better.
3. In the process of mold use, the punch is prone to breakage, twists and breaks, and the punch sleeves are generally broken. The damage of the punch and sleeve is generally replaced with parts of the same specification. The parameters of the punch mainly include the specification of the operating part, the specification of the installation part, and the length specification.
4. Fasten parts, check whether the fastened parts are loose or damaged. The method adopted is to replace the parts with the same specifications.
5. Material pressure parts such as material pressure plates, Uniglue, etc., discharge parts such as stripper plates, pneumatic ejectors, etc. During maintenance, check the connection of various parts of the accessories and whether they are damaged, repair the damaged parts, check whether there is air leakage by pneumatic jacking, and adopt methods for detailed conditions. Replace if the trachea is damaged. It is necessary to focus on tracking and testing several important parts of the mold: the ejector and guide components are used to ensure the opening and closing movement of the mold and the ejection of the plastic part. If any part of the mold is stuck due to damage, it will cause the production to stop, so you should always stick to it. Smooth the mold thimble and guide post (use Z suitable smoothing agent), and regularly check whether the thimble, guide post, etc. are deformed and surface damaged. Once found, replace it in time; after finishing a production cycle, work on the surface of the mold. , Motion and guide parts are coated with professional anti-rust oil, and special attention should be paid to the protection of the elastic strength of the bearing parts of the gears, rack molds and spring molds to ensure that they are always in good working conditions; as the production time continues, The cooling channel is easy to accumulate scale, rust, silt and algae, which reduces the cross-section of the cooling channel, narrows the cooling channel, greatly reduces the heat exchange rate between the coolant and the mold, and increases the production cost of the enterprise. Therefore, the cleaning of the runner should be done. Arouse attention; for the warm runner mold, the maintenance of the heating and control system is helpful to avoid the occurrence of production problems, so it is particularly important.