Technology

Introduce the maintenance methods of related injection molds

Introduce the maintenance methods of related injection molds
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In order to judge the damage status of plastic molds and maintenance measures. The processing enterprise should test the various performances 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.The existing state of the mold can be determined through these information, and the cavity, core, cooling The damage of the system and the parting surface etc.
At the same time, several important parts of the mold must be tracked and tested: the function of the ejection and guide parts is to ensure the mold opening and closing movement and the ejection of the plastic parts. Maintain the lubrication of the thimble and guide post of the mold (select the most suitable lubricant), and regularly check the thimble and guide post for deformation and surface damage.Once found, they must be replaced in time; after a production cycle is completed, the mold must be worked The surface, motion and guide parts are coated with professional anti-rust oil, especially the protection of the elastic strength of the bearing parts with gears, rack molds and spring molds to ensure that they are always in the best working state; with the production time Continued, the cooling channel is prone to deposit scale, rust, sludge and algae, etc., making the cross section of the cooling channel smaller and the cooling channel narrower, greatly reducing the heat exchange rate between the coolant and the mold, increasing the production cost of the enterprise, Cleaning should pay attention; for the hot runner mold, the maintenance of the heating and control system is helpful to prevent the occurrence of production failures, so it is particularly important. Therefore, after the end of each production cycle, the belt heater, rod heater, heating probe and thermocouple on the mold should be measured with an ohmmeter.If there is any damage, it should be replaced in time and carried out with the mold resume Make comparisons and make records so that problems can be found in 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, so it is particularly important to choose a suitable, high-quality, professional anti-rust oil. After the mold completes the production task, different methods should be used to carefully remove residual injection according to different injections. Copper rods, copper wires and professional mold cleaning agents can be used to remove residual injection and other deposits in the mold, and then air dried. It is forbidden to clean hard objects such as iron wire and steel bar to avoid scratching the surface. If there are rust spots caused by corrosive injection molding, use a grinder to grind and polish, and spray with professional anti-rust oil, and then place the mold in a dry, cool and dust-free place for storage.

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