While the new concepts such as “Industry 4.0†and digital factories were prevalent in the industry, the author had the privilege of visiting the Chengdu Production R&D Base (hereafter referred to as SEWC) of Siemens Industrial Automation in Chengdu's Hi-tech West District and had a close contact with Siemens in China. The first and only digital factory was set up. “The ear is imaginary and seeing is believingâ€, this visit allowed the author to have a better understanding of the digital factory and a deeper understanding of “Industry 4.0â€.
SEWC Factory Interior
SEWC is a sister factory of the Amberg factory. It is well known that the Siemens Amberg plant, established in 1989, is considered to be the world's most advanced digital factory and has been considered by the industry as the prototype of German industry 4.0. The SEWC, which was established in 2011 and put into operation in 2013, also performed well. “One product went offline in 10 seconds, 11,000 products per day, 9.5 million machining failures (dpm), and 40% of SEWC's products were sent to Germany globally. Supply,†said Li Yongli, general manager of Siemens Industry Automation (Chengdu) Co., Ltd., “Since the process of industrialization in China and the importance of Siemens in industrial automation, Siemens decided to build the factory into China's most important market. The latest Siemens digital factory platform will be applied to the Chengdu plant to ensure steady progress in the next 20-30 years."
Automating the practice of "quality first" operating philosophy
“SEWC does not exist to erect a model factory. Our goal is to achieve better factory benefits, higher product quality and shorter delivery time.†Li Yongli said, “When customers measure products, they will not only think about the products themselves. The price, and more importantly, the quality of the product, because when the product fails, the loss to the customer is far more than the cost of the product itself, the powerful data flow formed by digital can help the entire plant management operations and ensure all information The entire process can be traced, and the product quality can be guaranteed while shortening the product delivery period."
Production automation effectively improves quality, avoids human error, and reduces error rates. Automated equipment can automatically collect large amounts of data while it is in operation, and data collected during operation is collected in a timely and accurate manner without wasting manpower.
Logistics automation guarantees the transparency and traceability of the process data of the material. The material entering the factory has its own unique identity, and records the data generated during each step of the process. Any slight deviations can be traced. The accumulation and analysis of these data can help management to make more scientific and efficient decision-making, shorten the time for equipment debugging, and improve product quality while effectively avoiding further losses.
The automation of information flow is the key to digitalization. From the initial planning, procurement, processing, and delivery of a complete supply chain, coordination of various departments is required. If information sharing between departments cannot be achieved, the time and cost consumed in the common link will be Multiplied, the efficiency is naturally low. In the process of information automation, the information is recorded, exchanged, and flowed through the equipment automatically. Especially when the scale of the company is large enough and the scale of processing is sufficiently complex, it becomes necessary to realize autonomous information flow between equipment.
Core system builds a transparent factory
"Industry 4.0" is more involved in the interaction between various equipment flow functions and existing data. At SEWC, the product life cycle and the entire production process are integrated into highly automated industrial software. The operation of the entire plant is based on these data bases. ERP (enterprise resource planning), PLM (product life cycle management), MES (manufacturing execution system), control system, and supply chain management all realize seamless information. Interconnected, factory data can also be interconnected with German production bases and R&D centers in the United States to create a picture of a transparent factory.
Functionally, the MES (Manufacturing Execution System) is more concerned about, and interlocks between equipment, traceability, etc. all require MES. It is like an abstract network linking production and transportation, and Can quickly extract the required data for overall management. With the sensors of the Minobu factory, the production information is transmitted to the MES system in real time, and the system displays the information after quality management. When the digital system displays the quality information in real-time, it can be viewed by the customer at any time, achieving transparency of quality information.
PLM (Product Life Cycle Management) software is not just about R&D. Production, procurement, and logistics need cooperation on this platform. The data in all aspects of the product are continuously enriched on this platform. All the corresponding data changes caused by the change of any one link can be timely and accurately updated automatically through the PLM, and the subsequent production process will be automatically transmitted to the MES. MES will allocate production lines and time according to new manufacturing solutions, so as to achieve seamless integration between systems and automatic data updates. The higher the degree of automation of data exchange, the lower the error rate.
Every link in the factory, production planning, logistics, design, production, execution, etc., produces a large amount of data and can be integrated and exchanged in real time to achieve transparency. Transparency can only realize the most rapid discovery of valuable data. The scientific accuracy of decision-making is ensured. It is easy to analyze the problems in each process, and thus to carry out targeted optimization.
Carefully layout data flow
The site visit is divided into three parts: the transport layer, the factory area and the three-dimensional warehouse. The first thing I visited was the transportation layer on the first floor. Only a few staff were seen on this floor. The materials in one box were neatly and orderly on the guide rails. Each box had a bar code and when it reached the mouthwash , Scanning devices will be automatically scanned, through the "data dialogue" with the warehouse management software, through the "automatic traffic" of the material transport links, transported to the high shelf stereo warehouse or material intermediate library. It is also equipped with several lifts dedicated to goods, which facilitates the transportation of cargoes at the production and transport levels. According to reports, after the materials were brought into the workshop from the material room, the workers started the assembly and packaging work according to the electronic task list on the computer screen. After the mission is completed, he just presses the button on the workbench. The sensor on the assembly line scans the product's bar code information and records its data at this station. The MES (Manufacturing Execution System) will use this data as a basis for judgments and issue instructions to the control system to direct the logistics vehicle to deliver the product to the next destination.
Rail transport semi-finished products
The entire production process is paperless and a mixed-flow production is achieved. The assembly line of the product assembly is equipped with equipment for assembling various components on both sides of the central circulation guide rail. There are standard trays on the guide rails, and the trays are semi-finished products. Each product is different. The MES system will automatically transfer the pallets from the rails to the rails of the equipment according to the production process and move the products to a device to complete the corresponding process. Most of the equipment is produced automatically, and individual stations use manual labor.
Next to the tour platform, two digital screens were used to demonstrate the digital R&D, digital production, digital logistics and digital quality management system of Siemens Digital Factory. Among them, the quality kanban can display the quality kanban in real time through the MES system of Siemens, and through continuous drilling, query quality problems and quality statistics in different dimensions. Another screen shows the simulation of the manufacturing and assembly process.
Three-dimensional warehouse
The next step is to go into a three-dimensional warehouse and go to the storeroom where the raw materials are stored. These are two high-level shelves that are up to 18 meters high. The purchased materials are stored here after quality inspection and are connected to the workshop via two lifts. The warehouse has a total of nearly 40,000 boxes of cargo spaces. The access of materials is not carried by forklifts. Instead, the “stacker/reclaimer†uses the digital positioning model to capture, regardless of the distance the forklift has passed, and the design of the material library is more compact. Save space in the warehouse. According to the data prompts in the background, the two reclaimers rely on digital positioning to quickly extract the corresponding raw materials and send them to the production workshop through the automatic transmission shaft. The precision of motion control is very high and the logistics management is fully automated. Driven by production orders, to automatic warehouse pick-up and replenishment, the error rate is almost zero.
The visit benefited the writer very much. It not only touched the shock brought by the digital factories in the field, but also had a further understanding of the industrial concepts of digitalization, informatization and automation. They were not cool machine substitutions. They were It is also not a "step-by-step" smart manufacturing. To gradually achieve the above "threeizations", there are still many work models that need to be overturned, and many new systems have to be established.
PVC Insulated Power Cable
Applications: Those LV Power Cables used for electricity supply in fixed installation, power networks,underground and in cable ducting where where mechanical damages are not to be expected.
Standard: IEC 60502
Rated Voltage: 0.6/1kV
Certificates: Third party test reports
Others: Fire Cable and other property Low Voltage Power Cable can be available
Pvc Power Cable,Pvc Power Cables,Power Pvc,Pvc Electric Wires
Shenzhen Bendakang Cables Holding Co., Ltd , https://www.bdkcables.com