How should one correctly choose the care products for the molds?

After long-term use, the cutting edge of the mold must be sharpened. After grinding, the cutting edge surface must be demagnetized to ensure it is non-magnetic. Otherwise, it is prone to blockage. The mold-using enterprises should make detailed records and statistics on its usage, maintenance (lubrication, cleaning, rust prevention), and damage conditions. Based on this, they can identify which components and assemblies have been damaged, the degree of wear, and provide information and data for discovering and solving problems. Also, they should know the forming process parameters of the mold and the materials used for the products to shorten the trial run time and improve production efficiency. Under the normal operation of the injection molding machine and the mold, test the various performance of the mold and measure the final molded plastic part dimensions. Through these pieces of information, the current state of the mold can be determined, and the damage locations of the cavity, core, cooling system, and parting surface can be found. Based on the information provided by the plastic part, the damage state of the mold and the maintenance measures can be determined. 

Among elastic parts such as springs, they are the most prone to damage during use. Common issues include breakage and deformation. The solution is to replace them. During the replacement process, it is essential to pay attention to the specifications and models of the springs. The specifications and models of the springs can be identified by color, outer diameter, and length. Only when all three are the same can the replacement be carried out. The springs are of imported quality. 

During the use of the mold, the punch is prone to breakage, bending and damage. The punch sleeve is usually damaged. The damage to the punch and the punch sleeve is generally replaced with parts of the same specification. The parameters of the punch mainly include the size of the working part, the size of the installation part, and the length dimension. 

Fasten the parts, check whether the fastened parts are loose or damaged. The solution is to replace them with parts of the same specification. 

Pressing parts such as pressing plates and U-shaped glue, and discharging parts such as discharging plates and pneumatic top-pressing devices. During maintenance, check the connection of components in each part and whether there is any damage. Repair the damaged parts. Check for any air leakage in the pneumatic top-pressing device and take measures according to the specific situation. For example, replace the damaged air pipe. Focus on tracking and inspecting several important components of the mold: The function of the ejection and guiding parts is to ensure the opening and closing movement of the mold and the ejection of the plastic part. If any part of them gets stuck due to damage, it will cause production halt. Therefore, the mold pins and guide columns should be lubricated frequently (select the most suitable lubricant), and regular checks should be conducted on whether the pins, guide columns, etc. have deformed or suffered surface damage. If found, they should be replaced in time. After completing one production cycle, apply professional anti-rust oil to the working surface, movement, and guiding parts of the mold. Special attention should be paid to protecting the bearing parts of molds with gears, racks, and spring molds, to ensure they are always in the best working condition. As production time continues, the cooling channels are prone to accumulate water垢， rust， silt， and algae， causing the cross-section of the cooling channels to shrink and the cooling passages to narrow， significantly reducing the heat exchange rate between the cooling fluid and the mold， increasing the production cost of the enterprise. Therefore， the cleaning of the cooling channels should be given special attention. For hot channel molds， the maintenance of the heating and control systems is conducive to preventing production failures， and is therefore particularly important.