What factors affect the quality of injection molds and how to maintain them?(2）

2. Structural design The mature mold structure not only considers the characteristics of product data, shortening rate, molding temperature, elastic tensile deformation coefficient, etc., but also considers the cooling water circuit, the speed of mold opening and closing, etc. A reasonable mold structure can effectively extend the life of the mold and ensure the smooth production of the mold, improve efficiency, and reduce costs. 3. Mold processing If a worker wants to do well, he must first sharpen his tools. The organization of the mold process is particularly important. A reasonable process organization can speed up the production cycle, shorten the processing time, and effectively save costs. And more importantly, accurate and reasonable processing can ensure the stability and extended life of the mold during the production process. Some processing errors will cause mold welding, no matter how good the welding is, it is a loss to the mold; other poor processing may also affect the mold operation, reduce the mold life, and cause the mold to appear in the production process Pull and even break. 4. Standard Parts The one that determines the capacity of the bucket is the lowest piece of wood. We all understand this truth, but we often fail to notice it when we do it. The same is true for molds. Although standard parts are not directly involved in forming, they control the operation of the entire mold. Good standard parts should be wear-resistant, hard enough, high precision, and not suitable for deformation. There is a big price difference between standard parts of different brands, so don't blindly bargain the price when making molds. 5. Butt bump (flying model) It depends on the experience of mold fitter. The seemingly simple job is the most technical job. The first thing that messy molds look at is this skill. The flat mold is the simplest, and the fractal surface only needs to be free of flash and error. For example, car parts molds are very troublesome, not only the fractal surface is relatively irregular, but also often contains multiple sliders and top blocks. The other problems of the mold can be improved and perfected through the bumping together, so it is a comprehensive operation. 6. Polishing/Leather Grain The polishing of the mold is the final link in the production of the mold. Polishing is directly reflected on the plastic parts, so this is the most decent job. Polishing can also help and compensate for the action of the mold, especially for demolding. Often, some molds are not produced smoothly because of improper lighting, excessive resistance, difficulty in demolding, and even whitening and capping. 7. Mould device The mold device is just like the assembly machine. Every component and every screw must not make mistakes, otherwise the result will be quite serious. In the light of it, it will lead to product defects and affect the production. Therefore, the work of the installation must be very detailed. During the installation process, pay attention to the cleaning of the mold, especially the waterway and screw holes, and be sure to clean the iron filings inside. 8. Warm runner is still cold runner This actually has the least impact on the quality of the mold, because the warm runners are generally designated by customers, especially some large customers. Well-known foreign brands do everything in terms of quality or after-sales service, so there is generally no problem in quality. Only some domestic warm runners are very different in quality. In order to save costs and compete for price advantage, a single small business uses some unreliable heating and conduction accessories to simply cause problems. The primary problem of cold runner is how to ensure the balance of injection molding, gate size, injection pressure and so on. 9. Cooling water circuit Anyone who has experienced mold knows how important cooling is to a mold. Because of the increase in prices and human wages, it is impossible to imagine the profit that does not cut the injection cycle of one second when the product is produced in large quantities. However, speeding up the production cycle will result in an increase in mold temperature. If it is not effectively controlled, it will make the mold too hot to be unable to form, and even cause the mold to deform and become invalid. Therefore, excellent waterway design is particularly important, including the arrangement density, diameter, and mutual links of the waterway.  
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