Precision injection molding technology for the plastic processing industry development

With the continuous improvement of the end user requirements for product appearance, electrical plastic parts structure becomes more complex, the size is smaller and smaller. Precision injection molding technology played an important role in this respect. Advanced injection molding technology has greatly increased the precision plastic parts quality, reliability and performance, reduce the production cost, improve the production efficiency, is of great significance.
precision injection molding technology is conducive to the further development of injection molding.
injection molding technology is a method of manufacturing plastic products by pressure injecting molten plastic into plastic products mold, cooling molding, to obtain all kinds of the technology of plastic parts required. Is currently the most commonly used plastic polystyrene. According to the international mold, metal and plastic industry suppliers association luo hui is introduced, with the development of '3 c' products, precision injection molding machine as the key foundation of precision injection molding equipment, the size, internal quality, repeat accuracy and repeat precision molding efficiency three aspects has the very big enhancement. Compared with the traditional injection molding equipment, precision injection molding machine to realize the precise control of the product and precise production. Precision injection molding with the plasticizing unit is to improve the quality of plasticizing, injection molding and repeat precision products internal quality of key parts. At present, the main purpose of the device is to realize the high speed, high pressure and fast response.
polyurethane foam sealing technology better performance, lower cost.
in 1965, the German Sonderhoff and basf company packaging company for the first time the concept of reaction gasket. In 1980, FIPFG sealing technology was born. Implementation, for the first time marching on the mixing head in to seal the workpiece, will spread to the workpiece's pioneering work in the groove of the component mixture. In 1992, France electricity company launched the first two-component sealing system DM110 mixed with MK200 first. This led to the first joint seal foam project.
in the past 20 years, polyurethane foam sealing technology ( FIPFG) Development, has become a mature industrial technology, and constantly used in ambry, packaging materials, electronics and car industries. With the rapid development of industrial automation, the sealing technology in automobile industry and its supporting manufacturers is playing an increasingly important role in production, and gradually replaced the shaping seal ( The stamping or bar rubber seal) 。 At present, the equipment has been in developed countries is widely used in industrial and mechanical production, and has entered the domestic some advanced cabinet, automotive, aerospace and electronics companies. Polyurethane foam sealing technology with its irreplaceable advantage gradually occupied the seal in the market, has great market prospect.
as the injection molding process to develop in the direction of high efficiency, high precision and low cost, the plastic market focus on mold welding, online sealing and the latest development of micro forming. The end of march, with the German soder hoff company at its headquarters in Germany have developed a new mould sealing process. Peter fisher, PeterFischer) Hoff is Thornton's marketing director, he is in situ polyurethane foam technology ( FIPFG) Experts, he told reporters that the system is fully integrated with injection molding machine control system. As a kind of on-line mould seal technology, the system is particularly innovative, because it is only a 6 axis of the robot is used for cutting parts and seal materials. In a sealed phase, forming process of waste heat to reduce the curing time. Fort 'injection molding system in Germany luo demonstrated, cut and seal the application takes about 45 seconds. FERMAPORK31 soft polyurethane foam system, after sealing three minutes can be cured completely, eliminating the balance with for a long period of time. 'Peter fisher said.
in the mold manufacturing industry, Germany in 2010 stainless steel mould manufacturer Edelstahlwerke ( 露) 2010 launch of Euromold can well meet the requirements of more precise processing capacity, PET bottle preform stainless steel in the mold cavity number increased up to 192 cavity.
Wittmannbattenfeld has been actively developing other applications, including micro mixture of metal plastic forming, the development of packaging technology and roller and other metal strip production and operation. , however, a new micro power machine can be well integrated into a complete product, from the cladding forming to mesh metal belt thermoplastics, such as light-emitting diode lead frame part of the project units. With the cycle of 5 s, the company claims that compared with the traditional injection molding process, can save 30 - 50% of the cost.
polyurethane foam sealing technology better performance, lower cost.
the general precision of injection screw has high rigidity and strength of materials used, production of precision injection screw will vary depending on the material. In order to improve the injection molding do so than to minimize product shrinkage, precision injection molding machine injection pressure can reach 216 ~ 243 mpa, ultrahigh pressure machine injection pressure can reach 243 ~ 392 mpa. In this case, the screw must have enough stiffness and strength, which will help in the process of high pressure injection molding failure phenomenon such as bent, and twisted. In addition, for the clamping device of traditional toggle device, do not have access to mobile template and fixed template parallelism of long-term stability, difficult to achieve precision mold of low voltage protection.