China is the largest producer of textile machinery in the world. It now produces hundreds of thousands of textile machinery products every year. Textile machinery involves dozens of processes, hundreds of models, and automation technology is one of the most important key technologies for textile machinery. Frequency control technology, motion control technology, programmable controller technology, etc., are widely used in textile machinery. Siemens has long-term and extensive cooperation with the Chinese textile machinery industry. Siemens SIMOVERT series of variable frequency speed control systems, SIMATIC series automation systems are widely used in China. In recent years, Siemens has introduced the latest generation of SINAMICS series transmission systems and SIMOTION motion control systems.
Siemens' latest generation of SINAMICS AC drive systems with integrated voltage/frequency control, vector control and servo control functions are based on the latest drive concept and incorporate many innovative technologies. Among the series of products, SINAMICS G120/S120 series are more suitable for applications in the textile machinery industry. Among them, G120 series is suitable for 250KW below, medium performance open/closed loop speed control system; S120 series is suitable for high performance servo drive system. The G/S120 system has a built-in triangular wave function, which is suitable for the control of the yarn winding traverse device.
In textile machinery, there are many models that require high-performance, high-precision motion control. For example, the automatic winder tying cycle requires accurate positioning; the precision winder guide wire mechanism requires rapid reciprocating motion; the electronic let-off of air-jet and rapier-free shuttle looms, etc., must accurately control the amount of warp yarn delivered. Take-up volume; the front and rear drive rollers of the flat screen printing machine are required to maintain strict synchronous operation; Parknet's Parknet's garden nets ensure that the park net and the guide belt and the net and the net are operated synchronously and synchronously. In recent years, servo motors have been used to drive them. . SIMOTION is the world's first motion control system designed for production machinery. It integrates motion control, logic control and process control functions, especially for complex motion control. In addition to the complex motion control functions, the SIMOTION-D motion controller also directly integrates multi-axis servo controllers, providing a complete solution for high-performance textile machinery.
The widely used Siemens SIMATIC series PLC devices such as the S7-300/400 are also commonly used in conjunction with the SINAMICS series of transmission systems and are widely used in textile machines.
When using the Siemens SIMATIC series PLC, SIMOTION motion controller and SINAMICS series transmission solutions, the PROFIBUS communication method is generally adopted. This is an open communication method widely used, with high speed and good stability. When adopting the SIMOTION+S120 solution, Siemens can use the functional modules specially developed for production machinery, such as the curling function and the traverse line function, which can greatly reduce the debugging time of the system.
After years of cooperation with customers, Siemens has formed a relatively complete configuration scheme. Such as:
(1) S7-300+G120: Suitable for medium performance control and speed regulation requirements;
(2) S7-300/400+G/S120: Applicable to the requirements of higher speed control and positioning for medium performance control and individual transmission;
(3) S7-300/400 + SIMOTION-D + S120: Suitable for high-performance, complex motion control, the drive system requires higher speed, torque control, positioning and other requirements.
Applications:
(1) Beijing Zhongli Filament Winding Project
The picture above shows a new type of fully automatic high-speed winder developed by Beijing Zhongli Chemical Fiber Machinery Co., Ltd. and Siemens Co., Ltd. It can realize three kinds of winding methods: ordinary winding, precision winding and stepwise precision winding.
(2) Daily spinning spinning machine
The picture above shows the rotor spinning machine developed by Zhejiang Rifa Textile Machinery Co., Ltd. and Siemens.
The following are the solutions of Siemens in some textile machinery, which are all successful cases that have been applied at home and abroad.