SMC汽车覆盖件模压液压机是一款复合材料成型液压机，有四柱式、框架式两种结构，根据SMC汽车覆盖件来选择合适吨位、结构的模压液压机。文中介绍的是山东众友重工设计生产的一款2000吨四柱液压机，三梁四柱式结构双缸结构，专门用于压制SMC汽车覆盖件，比如：SMC大货车导流罩、SMC保险杠、SMC叶子板、SMC尾翼、SMC后视镜外壳、SMC汽车中控台、SMC发动机保护罩、SMC车顶行李箱等。
这款2000吨SMC汽车覆盖件模压液压机主机选用技术成熟的三梁四柱液压机结构形式，为平衡大台面受力均匀，设置成横置三缸结构，通过三维建模和计算机有限元分析设计，在比例阀和同步阀的配合下，各油缸同步精度高，压力均匀，从而保证了SMC产品的成型精度。2000吨四柱液压机的横梁选用优质Q345钢板经二保焊焊接而成，再经X射线探伤仪检测合格，然后进行回火或者振动时效处理消除结构内应力，后经大型数控落地镗铣床进行镗孔和平面精铣。山东沃达重工严格参照 ISO9001质量管理体系标准规范生产工艺和检验检测流程，保证每一台液压机设备的出厂合格。
The hydraulic system is equipped with a group of slow-opening mold cylinders, proportional valves, servo flow valves and other precision control hydraulic devices. Each cylinder is separately equipped with a large-volume fast-stroke filling valve, and the bottom of the workbench is equipped with an ejection cylinder, which can realize fast descent, slow descent, slow pressing, slow mold opening, fast return, ejection and demoulding. PLC touch screen control and servo drive mode is adopted. In the case of artificial cloth, semi-automated production can be realized. The selected Fishi servo system can start and stop servo motors intelligently to achieve environmental protection effects of energy saving and noise reduction.
SMC automotive panel compression molding steps:
1. Mold cleaning. Clean the mold to avoid the residue of dust and debris.
2. Apply release agent. Ensure that the mold is clean and smooth and coated with release agent to prevent the product from sticking together with the mold after molding.
3. Material preparation. The required carbon fiber prepreg is prepared according to the shape and size of the product.
4. Stacked materials. The carbon fiber prepreg is stacked layer by layer and pre-pressed to form a compact body with regular shape and certain quality.
5, into the mold. Put the stacked raw materials into the mold, the 2000-ton SMC automobile cover molding hydraulic press is clamped, and the pressure, time and temperature of the composite automobile outer cover are set and then pressed at high temperature.
6. Cooling and demoulding. After the end of hot pressing, it is cooled for a period of time, and then the mold is opened to take out the product.
7. Post-processing. The products taken out of the mold are relatively rough, and they have to go through a series of post-treatment processes such as trimming, polishing, and painting.
The 2000-ton SMC automobile cover molding hydraulic press is four-column oriented, with high precision and no partial load. Generally equipped with PLC and servo hydraulic system, PLC can be a key operation, fixed range and constant pressure, servo hydraulic system (servo hydraulic machine) has the advantages of energy saving, high efficiency, low noise, high control accuracy, making the equipment more accurate.Features of 2000 tons SMC car cover press hydraulic press equipment:
1. The four-column structure is simple, economical and practical, high precision, and strong anti-partial load capacity;
2. The hydraulic control adopts the cartridge valve integrated system, which reduces the leakage point, the action is reliable and stable, and the service life is long;
3. The 2000-ton SMC automobile cover press adopts PLC control system, which is compact in structure, sensitive, reliable and flexible;
4. The working pressure and stroke can be adjusted according to the process requirements within the specified range, and the operation is simple;
5. The 2000-ton SMC automobile cover molding hydraulic press can realize two molding processes of constant pressure and fixed stroke, with the function of delayed pressure holding and adjustable delay time;
4. It can be equipped with servo energy-saving system, quick mold change system, automatic loading and unloading robot, waste conveying line and other automation equipment.