Have you ever worked in the sales industry of injection molding machines? Would you like to ask about the prospect and salary of this industry? thank you

Since the advent of injection molding machines, the clamping force 1000-5000kN and the injection volume are 50-2000g, accounting for the vast majority. In the late 1970s, due to the development of engineering plastics, especially in automobiles, ships, aerospace, machinery and large household appliances, large injection machines developed rapidly. The United States is the most obvious. 1980, there were about 140 large injection molding machines with clamping force exceeding 10000kN in the United States, and by 1985, the number had increased to more than 500. Seiki Corporation of Japan has successfully manufactured the world's largest injection molding machine, with a clamping force of 120000kN and an injection volume of 92000g g..20 Since 1980s, CAD/CAE/CAPP/CAM computer application technology has been widely used in the plastic molding machine manufacturing industry, which has promoted the rapid development of R&D and the improvement of the manufacturing level of injection molding machines in China. A group of state-level high-tech enterprises, represented by Ningbo Haitian Co., Ltd., have successively introduced computer-aided design analysis software from U.G.S and PTC companies in the United States, and realized three-dimensional parametric modeling, mechanism motion simulation, analysis of major components, accurate analysis and calculation of stress distribution, stress peak value and dangerous area in high-stress areas, helping designers to quickly understand, evaluate and modify design schemes, and ensuring the perfect combination of structural rationality and reliability of important components. In order to ensure high-quality design output to high-quality product output, the old processing methods have been difficult to meet the requirements of technology and quality competition. During the Eighth Five-Year Plan and the Ninth Five-Year Plan, Haitian Company set up a branch of processing center with a cumulative investment of 200 million yuan according to the scientific method of rolling development. A 50,000-square-meter large assembly plant, 6,543,800-square-meter drawing and structural parts processing plant, 6,543,800-square-meter experimental workshop and laboratory, and 5,928-seat automated warehouse have been built. We purchased two flexible processing lines in OKUMA, Germany, and joined the cluster consisting of more than 40 processing centers. The national 863 plan-Zhejiang Haitian CIMS project was implemented, and the K3 system was successfully applied to realize the computer integrated management of production plan, materials and cost. IMAN system is introduced to realize the computer integrated management of product technical data creation and tracking, product structure and version, product attributes and related data query, and information transmission to K3 system. In 2000, Haitian Company achieved a sales income of 860 million yuan, earned 654.38 million dollars in foreign exchange through export that year, and realized a profit and tax of 200 million yuan. Completed the sales of 654.38+000 large-scale injection molding machines with international level in 1990s, and developed two international advanced technologies and equipment. First, mass production capacity is formed by spraying plastic on the surface of sheet metal parts such as protective doors and distribution boxes of injection molding machines. Secondly, the bimetallic spraying process of the screw and barrel of injection molding machine has been put into mass production, forming three complete series of key components, namely, the HTW and HTFX series adopt toggle mode locking, the HTK series adopts direct pressure mode locking, and the HTD series adopts servo motor control. The basic parameters range from 580kN to 36000kN, and the injection weight ranges from 70g to 5 1460g, which is in a leading position in China. Haitian company pays close attention to the development of international injection molding machines and strives to catch up with the development level of advanced productive forces. The speed of international mold transfer has been increased from 20-30m/min to 40-50m/min, and the highest speed can reach 70m/min. Haitian company's small and medium-sized machines have entered the level of 40-50 m/min, and the main machine is at the level of 30-35 m/min. The injection speed has increased from 100mm/s in the past to 250 mm/s now, and some of them have reached 450 mm/s, and the electric injection molding machine developed by Japan Steel Works has reached 900 mm/s ... Haitian brand injection molding machines generally exceed 130mm/s, and are accelerated to 450mm/s with accumulators. The injection pressure has increased from the past 120- 150MPa to the present 180-250MPa. Japan's SN 120P machine has reached 460MPa, and the shrinkage of its products is almost zero, the tolerance of products can be guaranteed to be 0.02-0.03mm, and the wall thickness can be guaranteed to be 0.1-0.2 mm. In terms of energy saving, injection molding machines with variable control or quantitative control, variable frequency speed regulation and servo control technology have developed from the past flow ratio and pressure ratio control. Haitian injection molding machine with frequency conversion servo technology consumes only 50% of the traditional energy. The high efficiency of injection molding machine is mainly reflected in its fast working rhythm and short product cycle, which is generally higher than that in the past by more than 24%. Generally, the mold opening and preforming of efficient injection molding machines are completed at the same time. Core pulling and ejection are completed at the same time when the mold is opened. The fastest injection molding machine in Japan has a working cycle of only 1 sec. The control technology of injection molding machine has experienced the development process of relay, contactor control, programmable controller control and special computer control. From the end of 1960s, computer control technology was first applied by the American company Felos. After the rapid development since 1980s, it is not a simple motion control, but a comprehensive control of various parameters such as melt temperature, injection pressure, injection speed, holding time, cooling process and hydraulic circuit. In the past, most of them used open-loop control, but now they are developing into closed-loop control. The PM control system of Krause Maffei Company in Germany makes the product quality error accurate to 0. 15% by controlling the clamping force, cavity pressure and filling process. The gap between Haitian's control technology and today's international advanced level is still relatively large. Our self-developed special computer has a certain distance from Siemens and Babacon in terms of reliability and stability, anti-interference ability, feedback response sensitivity and resolution accuracy. In addition, the motion accuracy and comprehensive error of the hardware need to be further improved. At present, another important aspect of the development of injection molding machines is various special injection molding machines, such as exhaust injection molding machines, foam injection molding machines, multi-color injection molding machines and so on. Bottle embryo machine and packaging machine, represented by Canadian Haschi Company, embody the characteristics of high-tech content. The low-pressure injection molding technology introduced by the company can still ensure high-quality product molding under the condition that the locking force is only one third of that of the traditional technology, greatly reducing the volume and weight of the machine, which is of great significance in energy saving and product cost control. Our Haitian company also actively develops injection molding machines for HTC thermosetting materials and HTP packaging and exports them to the North American market, injection molding machines for HTE bottle blanks and injection molding machines for HTS two-color molding. We will further promote these research and development. 2. The situation and development strategy after China's entry into WTO will have a great impact on the development of China's plastic machine industry, and opportunities and challenges coexist for enterprises. Except the infant industry will be protected for a certain period of time, the tariff barrier protection of other industries will no longer exist. The reduction of tariffs will make a large number of imported machines occupy the domestic market, and advanced technology, excellent quality and good service are highly competitive. Taking advantage of China's preferential opening conditions, some plastic machinery manufacturers from developed countries and regions have entered Chinese mainland. In Kunshan Economic Development Zone, Jiangsu Province, a group of manufacturers representing the plastic machine manufacturing industry in Taiwan Province Province gathered. Hong Kong Zhenxiong's plastic machine manufacturing industry has all been transferred to Shenzhen New Industrial Park. They make full use of domestic manpower and material resources to reduce production costs and then compete with us in the market. Moreover, China's molding machine industry can also import high-quality and low-cost supporting parts with low taxes, improve the quality level of the whole machine, and be conducive to export. We should seize the opportunity, meet the challenge, foster strengths and avoid weaknesses, and find the development space of this enterprise. First of all, we should establish an export-oriented development strategy, vigorously expand exports, create conditions for Chinese products, especially superior products, to enter the international market, strengthen exports and increase market share. There is great potential to encourage more enterprises to set up research institutes and run enterprises abroad, especially in Southeast Asia, the Middle East, Africa, Russia and Eastern Europe. Second, actively expand international economic and technological cooperation, and vigorously introduce advanced foreign technologies through joint ventures or technology purchases. Select manufacturers of internationally renowned brands and establish joint product development and research institutions. Third, actively promote specialized production, change the weakness of being large and complete, lacking in height, precision and sharpness, improve the quality level of key components, and aim at building world-famous products. Establish the quality policy of high quality, high efficiency, Excellence, sincere service and world-renowned. Keep up with the world's advanced technology, increase investment in science and technology, strengthen research and development combined with Industry-University-Research, highlight independent technological innovation, and accelerate the industrialization of scientific and technological achievements and the upgrading of plastic machine products. Market analysis Due to the rapid development of injection molding machines in recent years, except for the main engine, the supply of injection molding machines with general specifications exceeds demand, and it is very good that the sales volume can be maintained at about 1/3 at the peak period. However, the market demand for some high-tech injection molding machines is gradually strengthening. All-electric and all-hydraulic precision injection molding machine. The main markets of this kind of products are electronic communication, audio and video, home appliances, automobiles and so on. This requires higher processing conditions and accuracy of injection molding machines. These industries are sunrise industries, and there is a lot of room for improvement. Second, the hollow injection molding machine has developed rapidly. This is because the stress damage of plastic parts under vibration is a big problem in engineering applications such as automobile full plasticization, and the combination of various rubber and plastic materials and hollow injection molding technology can effectively improve the above defects. The third type is a new injection molding machine with gas-assisted and water-assisted devices. This technology has a great market in the near future, especially for products with high appearance requirements and long service life, such as home appliances, automobiles and buildings, which are more attractive.