How to maintain injection mold?

1. Processing enterprises should first equip each mold with a resume card to record and count its use, care (lubrication, cleaning, rust prevention) and damage, according to which parts and components can be found damaged, the degree of wear and tear, to provide information to find and solve problems, as well as the mold forming process parameters, The material used in the product is to shorten the trial run time and improve the production efficiency.

2. Processing enterprises should test the various properties of the mold under the normal operation of the injection molding machine and the mold, and measure the size of the final molded plastic parts. Through these information, the existing state of the mold can be determined, and the damages of the cavity, core, cooling system and parting surface can be found. According to the information provided by the plastic parts, the damages can be found. Judge the damage status and maintenance measures of the mould.

3. Important parts of the mold should be tracked and inspected: the function of ejecting and guiding parts is to ensure the opening and closing movement of the mold and the ejection of the mold. If any part of the mold is stuck because of damage, it will lead to the shutdown of production. Therefore, the lubrication of the ejector pin and the guide post of the mold should be maintained regularly (the most suitable lubricant should be selected), and regular inspection should be carried out. Whether the ejector pin and guide pin are deformed or damaged should be replaced as soon as it is found; after a production cycle, the professional rust-proof oil should be coated on the working surface, movement and guide parts of the die, especially the protection of the elastic strength of the bearing parts with gears, rack dies and spring dies, so as to ensure the safety of the die. With the continuous production time, the cooling passage is easy to deposit scale, rust, sludge and algae, which makes the section of cooling passage smaller and the cooling passage narrower, which greatly reduces the heat exchange rate between the coolant and the mold and increases the production cost of the enterprise. For hot runner mold, the maintenance of heating and control system is helpful to prevent production failure, so it is particularly important. Therefore, at the end of each production cycle should be on the mold belt heater, rod heater, heating probe and thermocouple with ohmmeter measurements, if damaged, should be replaced in time, and compared with the mold curriculum vitae, good records, in order to timely find problems, take countermeasures.

4. Must pay attention to the mold surface maintenance, it directly affects the surface quality of the product, the emphasis is to prevent rust, therefore, the selection of a suitable, high-quality, professional anti-rust oil is particularly important. When the mold is finished, different methods should be adopted to carefully remove the residual injection molding according to different injection molding. Copper rod, copper wire and professional mold cleaner can be used to remove the residual injection molding and other deposits in the mold, and then air-dry. Disable iron wire, steel bar and other hard objects to clean up, so as not to scratch the surface. If there are rust spots caused by corrosive injection molding, grinding machine should be used to polish, and sprayed with professional anti-rust oil, and then the mold placed in a dry, cool, dust-free storage.