SMC automotive cover molding hydraulic press is a composite materialforming hydraulic pressThere are two structures of four-column type and frame type. According to the SMC automobile cover, the appropriate tonnage and structure of the molded hydraulic press are selected. The article introduces ShandongZhongyou Heavy IndustryDesign and production of a 2000 tonsfour-column hydraulic press, Three-beam four-column structure double-cylinder structure, specially used to press SMC car covers, such as: SMC large truck shroud, SMC bumper, SMC fender, SMC tail, SMC rearview mirror shell, SMC car center Console, SMC engine protective cover, SMC roof trunk, etc.
This 2000-ton SMC automobile cover molding hydraulic press main machine adopts mature technologyThree-beam four-column hydraulic pressThe structure form is to balance the large table with uniform force and set up a horizontal three-cylinder structure. Through three-dimensional modeling and computer finite element analysis and design, with the cooperation of proportional valve and synchronous valve, each cylinder has high synchronization accuracy and uniform pressure, thus ensuring the molding accuracy of SMC products. The cross beam of the 2000-ton four-column hydraulic press is made of high-quality Q345 steel plate and welded by two-guarantee welding. After passing the X-ray flaw detector, tempering or vibration aging treatment is carried out to eliminate the internal stress of the structure. After that, boring and plane finish milling are carried out by large-scale numerical control floor boring and milling machines. Shandong Woda Heavy Industry strictly refers to the ISO9001 quality management system standards to standardize the production process and inspection and testing process to ensure that each hydraulic press equipment is qualified.
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.