Plastic mould factory

There is also a considerable market for hot runner molds in household appliances, electronic communications, construction equipment, instrumentation, plastics and rubber. The typical structure of hot runner molds, the standardization of components, standardized professional production and commercial supply, It is also the inevitable trend of future development. The issuance and implementation of these standards have promoted the technological progress and development of the hot runner mold industry, and produced great social and economic benefits. Since the establishment of the National Hot Runner Mold Standardization Technical Committee in 1983, experts have been organized to formulate, revise and review hot runner mold standards, and more than 90 standards have been issued, including 22 stamping die standards and more than 20 plastic mold standards.　　 With the continuous improvement of related technologies, the application of hot runner molds in the processing of plastic products will continue to expand. Next, I will briefly introduce the mold industry chain.　　Experts pointed out that the automobile and motorcycle industries are the largest markets for hot runner molds. Taking into account the outstanding economics of this technology, how to better apply hot runner mold technology will become one of the important ways for injection molding manufacturers to improve efficiency, reduce costs and increase product market competitiveness.　　 In recent years, due to the rapid development of the hot runner mold industry, the professionalization, commercialization and standardization of parts have reached a very high level and made considerable progress. Strive to go abroad and to the world.With the advancement of technology and the development of the country, the demand for molds is also increasing. In recent years, due to the rapid development of the hot runner mold industry, the specialization, commercialization and standardization of parts have reached a very high standard and made considerable progress.. From the perspective of long-term development, China's hot runner mold industry is bound to undergo profound changes with the advent of the era of knowledge economy. With the increasing application of hot runner mold standard parts, in the future market economy, hot runner mold standard parts will become a very active and rapidly developing product.　　 Therefore, Plastic Injection Molded Automotive Parts mold companies should work hard on innovative technology and industrial scope

When polishing with 8000Plastic Injection Molded Automotive Parts abrasive paste, the usual load is 100～200g/cm2, but it is difficult to maintain the accuracy of this load.032μm, A4=Ra0.　　4) Changing different directions during grinding can avoid the unevenness of the workpiece such as waves. If there are undercuts, it will cause It is difficult to demold the part or the part is strained.　　(9) The shape of the grinding tool should be close to the shape of the mold surface, so as to ensure that the workpiece is not deformed by grinding. The standard of mirror polishing is divided into 4 levels: A0=Ra0.Here are some things to pay attention to when polishing different types of molds. Can change the next finer sand number. To facilitate this, you can make a thin and narrow handle on the wooden strip, or cut a part of the bamboo strip to make it softer.　　 (8) # Try not to use a grinder to repair the parting surface, because the parting surface of the grinding wheel head is rough and has uneven waves. Firstly, the rough grain or fire patte of a single workpiece should be grinded separately, and then all the workpieces should be put together and polished to be smooth. This can help control the polishing pressure to ensure that the mold surface pressure is not too high. (4) For workpieces with large or lateral planes, use oilstone to grind rough grains and then use flat steel sheets for light transmission to check whether there are unevenness or undercuts.016μm, A3=Ra0.　　

When grinding rough grains, it is necessary to proceed in the order of difficulty first, easy first, especially for some difficult dead coers, the deeper bottom should be grind first, and the side and large surface should be the last. If necessary, the grinding wheel head must be glued to a concentric balance.008μm, A1=Ra0. After the upper level of sand grain is removed, the sanding time must be extended by 25%. (5) In order to prevent the mold workpiece from being undercut or there are some bonding surfaces that need to be protected, it can be pasted with a saw blade or attached to the side with sandpaper, so that the ideal protection effect can be obtained.　　

When changing the sand number level during polishing, the workpiece and the operator's hands must be cleaned to avoid carrying coarse sand to the next finer polishing operation.. Because the slope is too large, the force will rush from the top to the bottom, which will easily cause a lot of rough lines on the workpiece. (3) Some workpieces may have multiple pieces assembled together for polishing. However, the surface quality of chemical polishing, ultrasonic polishing, magnetic abrasive polishing and other methods are not up to the requirements, so the mirror processing of precision molds is still mainly mechanical polishing. Matters needing attention in the polishing of plastic molds: The polishing of plastic molds is very different from the surface polishing required in other industries. The precautions during polishing are as follows: (1) When a new mold cavity starts to be processed, the surface of the workpiece should be checked first, and the surface should be cleaned with kerosene so that the oilstone surface will not stick to dirt and lose the cutting function.063μm. 3) During each polishing process, the sandpaper should be polished from a different 45° direction until the upper level of sand grain is eliminated. Strictly speaking, the polishing of plastic molds should be called mirror finishing. It is difficult to precisely control the geometric accuracy of parts due to methods such as electrolytic polishing and fluid polishing.　　 Two, the matters needing attention for mold sanding and oilstone grinding: 　　 1) For the mold surface with higher hardness, only clean and soft oilstone polishing tools can be used.　　(7) If the surface of the workpiece is polished with sandpaper on the surface of the workpiece with copper or bamboo, the sandpaper should not be larger than the area of ​​the tool, otherwise it will grind to the place that should not be ground. It not only has high requirements for polishing itself, but also has high standards for surface flatness, smoothness and geometric accuracy.　　 One, matters needing attention in diamond grinding and polishing: Diamond grinding and polishing must be carried out under lighter pressure as much as possible, especially when polishing pre-hardened steel parts and polishing with fine abrasive paste. When using diamond grinding and polishing, not only the working surface must be clean, but the workers' hands must also be very clean. (6) The surface of the mold is pulled back and forth , The handle for dragging the oilstone should be placed as flat as possible, not more than 25°