concept The shape-fitting waterway, also known as the waterway, is a new type of mold cooling waterway based on 3D printing technology . Due to its processing characteristics, the conformal waterway can be well fitted to the shape of the product, and the cross section of the water path can be any other cross section than the circular shape. basic introduction 3D printing manufactures a water- jet mold workpiece whose water path can be evenly distributed along the shape of the product, thereby further reducing the molding cycle and increasing the added value of the product. With the continuous improvement of the printing process, the printing precision has been continuously improved and the printing price has been reduced to an acceptable range, 3D printing conformal waterway workpieces have been recognized by more and more users. Conformal cooling principle The cooling of plastic products during injection molding is mainly done by the mold cooling water circuit. However, the traditional cooling water circuit is manufactured by machining processes such as milling machines. The water path can only be a cylindrical straight hole, which cannot be completely close to the surface of the injection molded part, and the cooling efficiency is low and the cooling is uneven. , resulting in a long injection cycle and a large amount of product deformation. The 3D printed conformal waterway can be any shape and any cross section. By changing the shape and cross section, the contoured waterway can be evenly arranged to achieve a faster and more uniform cooling effect. Application range In the past two years, 3D printing conformal cooling mold inserts have been used more and more in injection molds. The conformal waterway mold insert made by Essence Laser (ESU) is widely used in packaging, automotive, electronic 3C, medical, home appliances and other industries, such as: game handle mold, charger shell mold, packaging industry in the electronic 3C industry The PEGT hot runner reverse pile mold, the fuse box, automobile connector and other molds in the automotive industry. Advantage 1. According to the complexity of the shape of the injection molded part, the cooling time can be reduced by 20% to 80%; 2. According to the shape of the injection molded part, the deformation amount can be reduced by 15% to 90%; 3. The cost of molds has increased slightly, but the final benefits have been greatly improved due to factors such as comprehensive injection molding capacity and yield. 4, with a wide range of applications, can be used for cooling optimization of most injection molded parts. Processing technology The conformal waterway is currently mainly processed by selective laser melting (SLM) 3D printing technology and diffusion welding technology. Since SLM 3D printing technology can make more complicated and smooth water path shape and lower cost, SLM 3D printing technology is It is more widely used along the waterway. SLM 3D printing process flow: 1, 3D document - conversion and export of STL data - STL data slice (design stage) 2. Selective laser melting metal powder stacking printing (manufacturing stage) 3. Remove the workpiece after printing is completed - post-processing - delivery (delivery stage) Material The conformal water routing selection laser melting 3D printing is obtained. The raw material is mold steel powder. The materials used in the ESU are EM181 powder (paired H13/8407/1.2344 mold steel) and EM191 powder (paired S136/1.2083 mold steel). )Wait. Use and maintenance The shape of the water channel is complicated, and the curved water path causes difficulty in cleaning up in the future. Therefore, when using the 3D printing type waterway, it is necessary to pay attention to maintenance, so as to prevent the water from being blocked. 1. The risk of blocking the cooling water inside the factory water tower is high. It is recommended to use the 3D printing water tank special mold temperature machine, and the mold temperature machine external water tank closed circuit; 2. If the waterway is blocked, use the special cleaning equipment for the waterway to clean. The liquid eyeliner has a rich and smooth line, which is very suitable for the current fashion to pick up makeup on the end of the eye. A slight increase in the tail can emphasize the femininity. Draw a slightly upward extension line along the arc of the outer corner of the eye, but the upward length should not exceed the width of the double eyelid, as it will look unnatural if it is too long.
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Mold 3D printing - conformal waterway