1.  Fully Automated Operation: The entire process, from feeding and drying to discharging, is automated, significantly reducing manual intervention, labor intensity, and workforce costs.

2.  Even and Efficient Drying: An optimized hot air circulation system ensures uniform heat distribution within the drying chamber, providing consistent drying across the top, bottom, and sides of the veneers. This effectively prevents defects like cracking and warping and significantly shortens the drying cycle.

3.  Precise Temperature & Humidity Control: Equipped with high-precision sensors and a PLC control system, it can monitor in real-time and accurately adjust the temperature and humidity during the drying process to meet the specific technical requirements of different wood species and veneer thicknesses.

4.  Significant Energy Savings & Environmental Friendliness: The use of high-efficiency insulation materials and a heat recovery system minimizes heat loss, reducing energy consumption costs. The clean energy design also complies with environmental standards.

5.  Stable, Reliable, and Durable: The main body of the equipment is constructed from high-quality steel and high-temperature resistant components, ensuring a robust structure, long design life, and continuous, stable industrial operation.

6.  User-Friendly Interface: Features a large touchscreen for simple and intuitive parameter setting. Operators can easily set and monitor drying curves and store multiple pre-set process recipes.

Wet veneers are evenly fed into the multi-layer conveyor belts inside the dryer via an automatic loading system. Once started, the hot air generated by the heating unit (e.g., steam, thermal oil, electric, or gas) is driven by powerful circulating fans to form a uniform and stable airflow that penetrates the veneer layers, carrying away moisture. The humid air is partially exhausted through the dehumidification system while fresh air is replenished to maintain drying efficiency. Throughout the process, the control system automatically adjusts temperature, humidity, and airspeed according to the pre-set drying curve until the veneers reach the predetermined optimal moisture content, after which they are automatically discharged.

A modern automated plywood veneer drying machine is a complex system primarily composed of the following core components:

1. Main Structure System

  Insulated Chamber: Typically made of high-quality color steel plates filled with high-performance insulation material (e.g., rock wool), it creates a sealed drying space, effectively preventing heat loss and improving thermal efficiency.

  Steel Frame: Provides robust support for the entire equipment, ensuring stable operation under prolonged high-temperature and high-humidity conditions.

2. Heating System

  Heat Source Unit: The core that generates drying heat, with options including steam boilers, thermal oil heaters, gas burners, or electric heaters, depending on customer conditions.

  Heat Exchanger: Transfers energy from the heat source safely and efficiently to the drying medium – air.

3. Ventilation and Circulation System

  Circulation Fans: Powerful fans are the driving force that ensures hot air is forced to circulate evenly within the drying chamber, guaranteeing uniform heating across the top, bottom, and sides of the veneers.

  Air Ducts and Baffles: Scientifically designed to guide hot air through the veneer stacks at optimal velocity and direction, avoiding dead zones and enabling efficient heat transfer.

  Air Inlet/Exhaust Dampers: Used to exhaust moist, hot air and supply fresh air, thereby precisely controlling the humidity inside the drying chamber.

4. Material Handling System

  Conveying Mechanism: Usually a multi-layer mesh belt or chain-track structure that smoothly carries the veneers into, through, and out of the dryer for continuous operation.

  Speed Control Device: By adjusting the conveyor speed, the residence time of the veneers inside the dryer can be precisely controlled to accommodate different initial and final moisture content requirements.

5. Automated Control System (The Core of Automation)

  PLC (Programmable Logic Controller): The brain of the equipment. It receives signals from various sensors and commands all components to work in coordination according to pre-set programs.

  HMI (Human-Machine Interface) Touchscreen: Allows operators to set drying process parameters (e.g., temperature, humidity, time) and monitor equipment status and drying curves in real-time.

  Sensors: Including temperature and humidity sensors, they continuously monitor the internal conditions of the dryer and feed the data back to the PLC.

  Actuators: Such as motorized control valves and frequency inverters, they receive commands from the PLC to precisely control valve openings, fan speeds, etc.

6. Safety and Protection System

  Over-temperature Protection: Automatically cuts off the heat source in case of abnormal temperature rise to prevent equipment damage and fire.

  Motor Overload Protection: Prevents fans, conveyor motors, etc., from burning out due to overload.

  Alarm System: Alerts operators via audible and visual signals when any abnormality occurs in the equipment.

  Model: ASD-Series (Customizable based on capacity)

  Heat Source Options: Steam, Thermal Oil, Natural Gas, Electricity

  Operating Temperature Range: 50°C - 180°C

  Final Veneer Moisture Content: 8% - 12% (Adjustable)

  Control System: PLC + Touch Screen (Capable of network connection for remote monitoring)

  Installed Power: Varies depending on equipment size and configuration.

This equipment is widely used in various plywood manufacturing plants. It is suitable for drying rotary-cut veneers from many wood species such as poplar, eucalyptus, pine, and birch. It is an indispensable core device for producing high-quality plywood, including construction templates, furniture panels, and decorative surfaces.