In order to judge the damage of the mold and maintenance measures. The workshop 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 part. Through this information, the existing state of the mold can be determined, and the cavity, core, and cooling can be found. Damage to the system and the parting surface.
At the same time, it is necessary to carry out key tracking and inspection on several important parts 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 parts. If any part is stuck due to damage, it will lead to production stoppage, so it should be frequent Keep the mold thimble and guide column lubrication (use the most suitable lubricant), and regularly check whether the thimble, guide post, etc. are deformed and surface damaged. Once found, replace it in time;
After completing a production cycle, it is necessary to apply professional anti-rust oil to the working surface, movement and guiding parts of the mold, especially to protect the elastic strength of the bearing parts with gears, racks and spring molds to ensure that they are always In optimal working condition;
As the production time continues, the cooling channel is easy to deposit scale, rust, sludge and algae, which makes the cooling passage section smaller, the cooling passage narrows, 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 flow channel should be paid attention to;
For hot runner molds, the maintenance of the heating and control system is particularly important to prevent production failures. Therefore, after each production cycle, the belt heater, rod heater, heating probe and thermocouple on the mold should be measured with an ohmmeter. If it is damaged, it should be replaced in time and with the mold history. Compare and make records so that problems can be discovered at the right time and countermeasures can be taken.
The surface maintenance of the mold can not be ignored, it directly affects the surface quality of the product, the focus is to prevent corrosion, therefore, it is especially important to choose a suitable, high-quality, professional anti-rust oil. After the mold has completed the production task, the residual injection molding should be carefully removed according to different injection molding methods. The residual injection molding and other deposits in the mold can be removed by using copper rods, copper wires and professional mold cleaning agents, and then air-dried.
Disable the cleaning of hard objects such as wire and steel bars to avoid scratching the surface. If there is rust caused by corrosive injection molding, use a grinder to grind and polish, spray professional anti-rust oil, and then store the mold in a dry, cool, dust-free place.