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How to maintain the injection mold?
1. The enterprise should first equip each pair of molds with a resume card, detailing and counting its use, care (lubrication, cleaning, rust prevention) and damage, according to which components and components can be damaged and the degree of wear is provided. Find and solve the problem information, as well as the molding process parameters of the mold , the materials used in the product, in order to shorten the test time of the mold and improve production efficiency.
2. The enterprise 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 Damage to the cooling system and the parting surface, etc., according to the information provided by the plastic parts, the damage state of the mold and maintenance measures can be judged.
3. 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. The thimble and guide column of the mold should be kept lubricated frequently (the most suitable lubricant should be selected), and the thimble and guide post should be regularly inspected for deformation and surface damage. Once found, it should be replaced 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 the best working condition; as the production time continues, the cooling channel is easy to deposit scale, rust, sludge and algae, which makes the cooling channel section smaller, the cooling channel narrows, and the heat exchange rate between the coolant and the mold is greatly reduced. In order to increase the production cost of the enterprise, the cleaning of the flow channel should be paid attention to; for the hot runner mold, the maintenance of the heating and control system is beneficial to prevent the occurrence of production failure, so it is especially important.
Therefore, after each production cycle, the ohmmeter should be measured with the belt heater, rod heater, heating probe and thermocouple on the mold. If it is damaged, it should be replaced in time and with the mold history. Compare and make records so that problems can be found and countermeasures can be taken.
4, should pay attention to the surface maintenance of the mold, it directly affects the surface quality of the product, the focus is to prevent corrosion, therefore, the selection of a suitable, high-quality, professional anti-rust oil is particularly important. 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 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.
A well-maintained and maintained mold can shorten mold assembly and commissioning time, reduce production failures, stabilize production, ensure product quality, reduce waste loss, and reduce operating costs and fixed assets.