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What is the knowledge of mold maintenance

发布时间:2018-09-05 浏览次数:271次

As the most important molding equipment for processing injection products, the quality of injection molds is directly related to the quality of products. Moreover, because the mold occupies a large proportion of the production cost of injection molding enterprises, its service life directly affects the cost of injection molding products. Therefore, it is an important issue for injection molding enterprises to improve the quality of injection molds, maintain and maintain them well, and prolong their service life.
Because of the variety of products and the frequent replacement of molds, injection molding enterprises usually keep the molds in storage after completing one production cycle until the next production cycle comes and then take them out for use. However, some processing enterprises have not paid enough attention to mold retention, resulting in corrosion and surface finish degradation of the mold during the retention period, resulting in a decline in product quality and a high rejection rate. Some molds are even difficult to reuse, and a large amount of money needs to be reinvested to buy new molds, resulting in great extravagance.
Processing enterprises should test various functions of the mold under the condition of normal operation of the injection molding machine and mold, and measure the dimensions of the final molded plastic parts. Through these information, the existing state of the mold can be determined, and the damages of the mold cavity, core, cooling system and parting surface can be found out. According to the information provided by the plastic parts, the damaged state of the mold and maintenance measures can be determined.
Processing enterprises should first provide each pair of molds with a resume card, specifically recording and counting its use, care ( lubrication, cleaning, rust prevention ) and damage, so as to find out which parts and components have been damaged and the degree of wear and tear, so as to provide information for finding and solving the problem, as well as the molding process parameters and materials used for the products of the molds, in order to shorten the test run time of the molds and improve the production efficiency.
We should focus on tracking and testing several important parts of the mold: belt heaters, rod heaters, heating probes and thermocouples on the mold should be measured with ohmmeters after each production cycle。 If they are damaged, they should be replaced in time and compared with the mold resume to make a good record so that problems can be found in time and corresponding measures can be taken。
To face up to the surface maintenance of the mold, it directly affects the surface quality of the product。 There is a new way to remove residual injection molding and clean it with dry ice。 No residue, better effect, can really improve the output and improve the utilization rate of the mold after passing the test! The principle is that dry ice particles in the dry ice blasting medium accelerate in the high-pressure airflow and impact the surface to be cleaned。 The unique feature of dry ice cleaning is the gasification of dry ice particles at the moment of impact。
A pair of molds that have been well maintained and maintained can shorten mold assembly and test run time, reduce production failures, make production run smoothly, ensure product quality, reduce waste loss, and reduce the operating cost and investment in fixed assets of the enterprise. At the beginning of the next production cycle, the enterprise can successfully produce qualified products. Therefore, for injection molding processing enterprises, in the current situation of fierce market competition, maintaining good molds can help enterprises.
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