In the field of packaging machinery, the product packaging quality is closely related to the temperature system, main machine speed accuracy, and the stability of the tracking system. Nowadays, with the continuous improvement of automation, the pillow-type automatic packaging machine has emerged. It adopts mature and reliable technology, incorporating years of experience, and features simplified operation, maintenance, and servicing. This reduces the need for specialized skills from operators and can adapt to various types of composite packaging film rolls, effectively meeting customer demands for packaging block-shaped food products.
The automatic food packaging machine is mainly composed of core components such as the frame, conveyor system, measuring system, sealing system, cutting system, and control system. Each system has a clear division of labor and works in coordination: the conveyor system accurately transports the food products to the designated packaging area of the machine; the measuring system precisely completes the portioned packaging of the food according to preset parameters; the sealing system is responsible for tightly sealing the packaging bags to ensure food freshness and safety; the cutting system cuts the packaging bags at the right time to complete individual packaging; while the control system acts as the "smart brain," overseeing and controlling the entire packaging process.
Food packaging machines come in various types. Based on the level of automation, there are semi-automatic and fully automatic packaging machines.
Fully automatic machines can automatically complete processes such as feeding, measuring, filling, and sealing, improving efficiency and are suitable for large-scale, single-variety production. Based on the packaging method, there are vacuum and heat shrink packaging machines. The former evacuates air to extend shelf life, while the latter heats the film to shrink it, providing moisture and oxidation protection as well as an attractive appearance.
Semi-automatic machines require manual operation and are suitable for small-batch, multi-variety food packaging;
Additionally, there are special types of machines such as liquid and powder packaging machines, designed for packaging liquid and powder-based foods.When selecting a machine, it is essential to consider product characteristics, scale, efficiency, and cost.
The transmission system of the food packaging machine has a simple function but requires high dynamic performance, such as fast dynamic tracking and high-speed accuracy. Therefore, it is important to consider the dynamic specifications of the inverter and select a high-performance inverter to meet the process requirements.
In the electrical section of the automatic packaging machine, the main control circuit is centered around the inverter and PLC; the temperature control circuit consists of intelligent temperature controllers, solid-state relays, the rmocouples, etc., providing precise temperature control, intuitive display, and easy setting; multi-point tracking detection is also achieved through photoelectric switches, electromagnetic proximity sensors, and other components.
The inverter has multiple advantages:
It uses slip frequency automatic compensation control, which can automatically correct the frequency and ensure stable motor speed when the load fluctuates.
It has high speed accuracy and fast dynamic response, meeting the demands for high-performance drive control, reducing the time and economic losses caused by transmission system failures, and lowering maintenance costs.
At the same time, it is feature-rich, performs stably, and operates with compact size and low noise.
After adopting variable frequency speed control technology, the system significantly reduces failure rates and maintenance costs by simplifying the transmission structure, while achieving increased production, optimized quality, and maximized profits. The integration of software control and intelligent functions (such as torque compensation, stall prevention, and restart) ensures stable equipment operation and product quality, while improving efficiency. Additionally, the reduction of chain transmission, lower noise, and enhanced operational stability further highlight the high-tech advantages of the packaging machine, including low energy loss, full automation, and multi functionality.
