After decades of development, China's auto industry has entered a stage of rapid development. Large and small joint ventures and privately-owned factories have continuously improved their technological level through the introduction of technology and independent research and development. At the same time, due to fierce competition, automakers and component suppliers are under increasing pressure. On the one hand, there is a need to continuously reduce costs, and on the other hand, to ensure that their products meet the industry's particularly stringent quality standards. In recent years, automakers have spent a lot of money on production logistics management systems in order to achieve transparent and flexible production logistics and increase production efficiency. The role of RFID technology in material and product tracking has a major impact on automotive production logistics. By deploying an RFID system, information visualization management of the production logistics process can be realized.
The need for RFID in the automotive industry is first, the automotive industry quality regulations. As end users expect higher and higher products, the requirements of car manufacturers for product quality are becoming more and more strict, and the competition among manufacturers is increasingly fierce. This requires an efficient quality management system (QM system) in all areas of the automotive industry. The detailed regulations for obtaining and preserving quality data are increasingly reflected in the requirements of the automotive industry quality standards: they must comply with the ISO 9000 certification standards, comply with the relevant legal system, and meet the interests of automobile manufacturers.
Second, flexible production. Automakers are increasingly using flexible production lines to increase production efficiency. That is, a variety of models are produced on one line, and one model is painted in several colors. In this case, the production information needs to be written into the RFID tag according to the arrangement of the production plan. The relevant production information is read out in the corresponding process, and the production operation is performed according to the preset arrangement. How to produce a variety of models on a production line, how to identify it, color control, material distribution, all of these processes rely on RFID to control, through the read / write operation of the tag mounted on the skid, All information is uploaded to the workshop production process monitoring system PMC through PLC for further processing and calculation, so as to realize the tracking and production process control of the whole workshop workpiece logistics.
Third, the material is pulled by the MES manufacturing execution system. The body-in-white is stored in the buffer zone of the WBS welding shop before it exits the welding shop and enters the coating shop. There are several lines in the WBS that store different models.
The management system needs to know the position and production status of the various vehicle bodies at any time, automatically arrange production according to the production plan, and notify the material pulling system to supplement the corresponding materials, so that the production can be carried out automatically, efficiently and orderly. By installing an RFID tag on a spreader or a skid, an RFID reader is installed at a branch of the workpiece stream, at the entrance of the paint shop, and the body information stored on the RFID tag is read, and then the information is sent. The MES system implements material management. Similarly, the painted body will be stored in the buffer zone of the PBS paint shop before going out of the paint shop, and RFID will be used to control the production process, production information, and state management.
Fourth, the requirements of the harsh production environment in the paint shop. The production environment of the painting workshop is quite harsh, not only the splash of metallic paint, but also the baking process with high temperature close to +200 °C. Bar code is not possible in this environment, and RFID must be used to complete the control of the entire production process and trace the production information. In the painting workshop, RFID-based vehicle body recognition technology can meet the needs of flexible manufacturing and realize the following functions:
Achieve precise positioning of all bodywork in the paint shop. Due to the pre-treatment, electrophoresis, painting, etc. in the coating process, the non-contact RFID radio frequency identification technology can fully meet the requirements of harsh working environment. Entering each car body in the paint shop, the system can track its current flow position and display detailed information such as the car model, color, body and model. When the data information is abnormal, it can be immediately fed back.
Painted bodywork. Provision and management of vehicles in each temporary storage area.
Monitoring of painting quality. Record important process parameters and quality inspection parameters for each vehicle and control the vehicle according to the painted batch.
Management of PBS. For vehicles with qualified quality inspection, the temporary storage position of the color body is controlled. Usually, the horizontal and vertical traveling machines used by the PBS are used. For the vehicles entering the PBS, the sequence must be easily arranged, and the different sequences are entered according to the final assembly sequence. s position.
Fifth, the engine assembly line. The engine assembly line uses the cylinder as the basic carrier to assemble the engine components into the engine assembly, including the main assembly, preparation area and inspection. The focus of control is assembly accuracy, torque, test results and defects occurring during assembly, and for cylinders, cylinder heads, crankshafts, camshafts, connecting rods, cylinder liners, flywheels, inlet and outlet pipes, oil pumps, fuel systems, Batch tracking of key components such as chains, generators, and starter motors.
The need for RFID in the automotive industry is first, the automotive industry quality regulations. As end users expect higher and higher products, the requirements of car manufacturers for product quality are becoming more and more strict, and the competition among manufacturers is increasingly fierce. This requires an efficient quality management system (QM system) in all areas of the automotive industry. The detailed regulations for obtaining and preserving quality data are increasingly reflected in the requirements of the automotive industry quality standards: they must comply with the ISO 9000 certification standards, comply with the relevant legal system, and meet the interests of automobile manufacturers.
Second, flexible production. Automakers are increasingly using flexible production lines to increase production efficiency. That is, a variety of models are produced on one line, and one model is painted in several colors. In this case, the production information needs to be written into the RFID tag according to the arrangement of the production plan. The relevant production information is read out in the corresponding process, and the production operation is performed according to the preset arrangement. How to produce a variety of models on a production line, how to identify it, color control, material distribution, all of these processes rely on RFID to control, through the read / write operation of the tag mounted on the skid, All information is uploaded to the workshop production process monitoring system PMC through PLC for further processing and calculation, so as to realize the tracking and production process control of the whole workshop workpiece logistics.
Third, the material is pulled by the MES manufacturing execution system. The body-in-white is stored in the buffer zone of the WBS welding shop before it exits the welding shop and enters the coating shop. There are several lines in the WBS that store different models.
The management system needs to know the position and production status of the various vehicle bodies at any time, automatically arrange production according to the production plan, and notify the material pulling system to supplement the corresponding materials, so that the production can be carried out automatically, efficiently and orderly. By installing an RFID tag on a spreader or a skid, an RFID reader is installed at a branch of the workpiece stream, at the entrance of the paint shop, and the body information stored on the RFID tag is read, and then the information is sent. The MES system implements material management. Similarly, the painted body will be stored in the buffer zone of the PBS paint shop before going out of the paint shop, and RFID will be used to control the production process, production information, and state management.
Fourth, the requirements of the harsh production environment in the paint shop. The production environment of the painting workshop is quite harsh, not only the splash of metallic paint, but also the baking process with high temperature close to +200 °C. Bar code is not possible in this environment, and RFID must be used to complete the control of the entire production process and trace the production information. In the painting workshop, RFID-based vehicle body recognition technology can meet the needs of flexible manufacturing and realize the following functions:
Achieve precise positioning of all bodywork in the paint shop. Due to the pre-treatment, electrophoresis, painting, etc. in the coating process, the non-contact RFID radio frequency identification technology can fully meet the requirements of harsh working environment. Entering each car body in the paint shop, the system can track its current flow position and display detailed information such as the car model, color, body and model. When the data information is abnormal, it can be immediately fed back.
Painted bodywork. Provision and management of vehicles in each temporary storage area.
Monitoring of painting quality. Record important process parameters and quality inspection parameters for each vehicle and control the vehicle according to the painted batch.
Management of PBS. For vehicles with qualified quality inspection, the temporary storage position of the color body is controlled. Usually, the horizontal and vertical traveling machines used by the PBS are used. For the vehicles entering the PBS, the sequence must be easily arranged, and the different sequences are entered according to the final assembly sequence. s position.
Fifth, the engine assembly line. The engine assembly line uses the cylinder as the basic carrier to assemble the engine components into the engine assembly, including the main assembly, preparation area and inspection. The focus of control is assembly accuracy, torque, test results and defects occurring during assembly, and for cylinders, cylinder heads, crankshafts, camshafts, connecting rods, cylinder liners, flywheels, inlet and outlet pipes, oil pumps, fuel systems, Batch tracking of key components such as chains, generators, and starter motors.
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