The application field of Delta inverter has been involved in food packaging machinery
In the 1980s, foreign-funded inverter products entered China’s shopping malls initially, following the rapid development of China’s economy. People know about the enhancement of energy conservation and environmental protection. Since the 1990s, the application of Delta Inverter has become more and more popular in the industrial field, and the career planning and application categories have been expanded.
The industries involved in packaging machinery are very extensive, and are divided into food packaging machinery, pharmaceutical packaging machinery, and other packaging machinery according to the application industry.
1. Packaging machinery: all kinds of pillow packaging machines, all kinds of aluminum plastic packaging machines, aluminum plastic blister packaging machines, semi-automatic strapping machines, stretch film strapping machines, automatic pallets Wrapper, automatic filling and packaging machine, sealing machine, automatic filling and sealing machine, baler, etc.
2. Pharmaceutical machinery: mobile lifting feeder, automatic capsule filling machine, mixing granulator, centrifuge, linear labeling machine, capsule printing machine, smashing machine, etc.
The energy saving of the inverter is mainly reflected in the application of fans and pumps. The motor starting current of the inverter is gradually increased from zero, and does not exceed the rated current, which reduces the impact on the power grid and the requirements of the power supply capacity, thereby achieving the effect of energy saving, extending the service life of the equipment and saving the equipment. Maintenance costs.
In fact, packaging machinery and pharmaceutical machinery are difficult to completely separate, therefore, many times packaging machinery is divided into food packaging machinery and pharmaceutical packaging machinery. At the same time, there are so many different kinds of things that it is difficult to give a case. However, this type of machinery has a common feature that the specifications are more than 3.7kw, some pharmaceutical machinery power is as large as 7.5kw, 5.5kw, and the centrifuge is as large as 15kw, 22kw, but requires simple speed regulation. Features.
1.Working principle of food packaging machine
The current pillow automatic packaging machine is designed and produced with domestic priority and mature technology, and brings together packaging machinery. With the essence of many years of experience in the field, the packaging machine can pack a block of food with various composite packaging film coils, which is very suitable for the needs of Chinese users.
1) The electrical part of the automatic packaging machine generally consists of the following:
a) The main control circuit consists of a speed sensorless vector inverter, programmable controller (PLC) constitutes the control core;
b) The temperature control circuit is composed of intelligent temperature control meter, solid state relay, thermocouple element, etc. The temperature control is precise, the display is intuitive, and the setting is convenient; ;
c) Multi-point tracking and detection by photoelectric switch, electromagnetic proximity sensor, etc.;
2) Fully automatic pillow working principle
With the improvement of the degree of automation, the operation, maintenance and daily maintenance of the packaging machine are more convenient and simple, and the professional skill requirements of the operator are lowered. The quality of the product packaging is directly related to the temperature system, the accuracy of the host speed, and the stability of the tracking system.
The tracking system is the control core of the packaging machine. It uses forward and reverse two-way tracking to further improve the tracking accuracy. After the machine is running, the film mark sensor continuously detects the film mark (color mark), and the mechanical part of the tracking micro switch detects the position of the machine. The above two signals are sent to the PLC. After the program operation, the output of the PLC is Y6 ( Positive chasing), Y12 (anti-chasing) control tracking the positive and negative tracking of the motor, timely finding and correcting the errors in the production process of the packaging materials and accurately compensate and avoid the waste of packaging materials. If the technical requirements are not met after the predetermined number of times of tracking, the machine can be automatically stopped for inspection to avoid the generation of waste products.
Due to the adoption of frequency conversion speed regulation, the chain transmission is greatly reduced, and the machine is improved. The stability and reliability of the operation reduce the noise of the machine. It ensures the high-tech, high-efficiency and high-tech level of the packaging machine with high efficiency, low loss and automatic detection. The transmission system used in both the beautiful and fashionable appearance and the healthy and sensitive mind food packaging machine has a relatively simple application function, but has high requirements on the dynamic performance of the transmission, and the system requires fast dynamic following performance and high stability. Speed accuracy. Therefore, the dynamic technical specifications of the inverter must be considered, and high-performance inverters can be selected to meet the requirements.
The speed sensorless vector inverter can meet the requirements of the packaging machine because it has the following characteristics:
1) Application of speed sensorless vector control technology, With automatic tuning function, the frequency is automatically corrected to achieve the effect of stable motor speed when the load changes;
2) With high speed stability and fast dynamic response, it can meet high performance occasions. Transmission control requirements. Reduced time and economic losses due to driveline failures. At the same time, the speed sensor is omitted, which has lower maintenance costs.
3) Advantages of using variable frequency speed control equipment with rich functions, stable performance, miniaturization, low noise operation, etc.
2. Application of variable frequency speed regulation Advantages of the equipment
1) Simplify the transmission system, greatly reduce the failure rate and reduce the maintenance cost of the enterprise.
2) Increase production and reduce costs. It can improve production technology, improve product output and quality, and effectively save costs and maximize profits.
3) Realize the software of control and improve the function.
4) Through the functions of torque compensation, anti-stall and restart, the non-tripping operation is realized; the quality of the products produced is stable and the efficiency is improved.