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Injection Mold Daily Maintenance Process Exchange
Jul 05, 2018

The core message: First, the processing company should provide each mold with a resume card, and record and count its usage, care (lubrication, cleaning, and rust prevention) and damages. Based on this, it can discover which components and components have been damaged, and the degree of wear is large. To provide information on finding and resolving problems, as well as the molding process parameters of the mold and materials used in the product, to shorten the test run time of the mold and increase production efficiency.

 

2. The processing enterprise should test the various properties of the mold under the normal operation conditions of the injection molding machine and the mold, and measure the final molded plastic part size. Through this information, the current state of the mold can be determined, and the cavity and the core can be found out. The damage of the cooling system and the parting surface, etc., according to the information provided by the plastic parts, can determine the damage status of the mold and maintenance measures.

 

3, to focus on several important parts of the mold to track the detection: the role of ejector, guide parts is to ensure that the mold opening and closing movements and plastic parts out, if any part of the stuck due to damage, will lead to production, it should be Always maintain the lubrication of the mold thimble and guide post (to select the most suitable lubricant), and regularly check the thimble, guide post, etc., whether deformation and surface damage occurred, once found, it must be replaced; after a production cycle, mold Work surface, movement, and guide parts are coated with professional anti-rust oil, and special attention should be paid to the protection of the bearing strength of the bearing parts with gears, rack moulds and spring moulds to ensure that they are always in the best working condition; with production As the time continues, the cooling channels are prone to deposition of scale, rust, silt, and algae, so that the cross section of the cooling channel becomes smaller, the cooling channel becomes narrower, the heat exchange rate between the cooling liquid and the mold is greatly reduced, and the production cost of the enterprise is increased, thus the flow channel The cleanup should pay attention; for the hot runner mold, the maintenance of the heating and control system is conducive to the prevention of production failure, so it is particularly heavy. . Therefore, after the end of each production cycle, the ohmmeters of the band heaters, stick heaters, heating probes, and thermocouples on the mold should be measured. If any damage occurs, they must be promptly replaced and the mold resume must be performed. Make comparisons and make records so that problems can be identified and countermeasures taken.

 

4, should pay attention to the mold surface maintenance, it directly affects the surface quality of the product, the key is to prevent corrosion, therefore, the choice of a suitable, high-quality, professional anti-rust oil is particularly important. After the mold completes the production task, the residual injection molding should be carefully removed according to different injection methods. Copper rods, copper wires, and professional mold cleaning agents can be used to remove residual injection molding and other deposits from the mold, and then air dried. Do not clean the hard objects such as wire and steel bars to avoid scratching the surface. If there are rust spots 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.


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