Correct care methods for mold products

Mold using enterprises should make detailed records, statistics on the use, care (lubrication, cleaning, rust prevention), and damage of molds. Based on this, they can discover which parts and components have been damaged, the degree of wear, and provide information and data for discovering and solving problems, as well as the molding process parameters of the mold and the materials used in the product, in order to shorten the trial run time of the mold and improve production efficiency.

The various properties of the injection molding machine and mold should be tested under normal operation, and the dimensions of the final formed plastic parts should be measured. Through this information, the existing state of the mold can be determined, and the damage to the cavity, core, cooling system, and parting surface can be identified. Based on the information provided by the plastic parts, the damage status of the mold and maintenance measures can be determined.

Key tracking and inspection should be carried out on several important components of the mold: the role of the ejector and guide parts is to ensure the opening and closing movement of the mold and the ejection of the plastic parts. If any part of them gets stuck due to damage, it will lead to production stoppage. Therefore, the lubrication of the mold ejector pin and guide post should be regularly maintained (the most suitable lubricant should be selected), and the ejector pin, guide post, etc. should be checked regularly for deformation and surface damage. Once discovered, they should be replaced in a timely manner; After completing a production cycle, professional rust proof oil should be applied to the working surface, motion, and guiding components of the mold. Special attention should be paid to protecting the bearing parts of the mold with gears and racks, as well as the elastic strength of the spring mold, to ensure that they are always in the best working condition.

Elastic components such as springs are most susceptible to damage during use, often resulting in breakage and deformation. The solution taken is to replace, and during the replacement process, it is important to pay attention to the specifications and model of the spring. The specifications and model of the spring are confirmed by color, outer diameter, and length, and can only be replaced if all three are the same. The quality of imported springs is preferred, and the quality of domestic mold springs is also good.

As production time continues, the cooling water channel is prone to sedimentation of scale, rust, sludge, and algae, which reduces the cross-sectional area of the cooling channel and narrows it, greatly reducing the heat exchange rate between the coolant and the mold and increasing the production cost of the enterprise. Therefore, the cleaning of the channel should be taken seriously. For hot runner mold products, the maintenance of heating and control systems is particularly important in preventing production failures.

For stamping and cutting die products, the cutting edge must be ground after long-term use. After grinding, the cutting edge surface must be demagnetized and must not have magnetism, otherwise it is prone to material blockage.

During the use of mold products, the punch is prone to breakage, bending, and gnawing, and the punching sleeve is generally gnawed. The damage to the punch and punch sleeve is usually replaced with parts of the same specifications. The parameters of the punch mainly include the working part size, installation part size, length size, etc.

Tighten the parts and check if they are loose or damaged. The solution is to replace them with parts of the same specifications. Pressing parts such as pressing plates, Yuli glue, etc., unloading parts such as stripping plates, pneumatic top material, etc. During maintenance, check the relationship between the accessories of each part and whether there is any damage, and repair the damaged parts. Pneumatic top material, check for air leakage, and take measures for specific situations, such as replacing damaged air pipes.