Fully automatic flipping dryer

Product Introduction

The Fully Automatic Flipping Veneer Dryer is a continuous automatic drying system specifically engineered for the wood processing industry. As a vertical-style veneer dryer—also known as a flip-style dryer—it utilizes a compact, multi-layer design where veneers are stacked and flipped to ensure even heat exposure. Unlike traditional horizontal dryers, this vertical configuration minimizes the equipment footprint while maximizing output capacity.

Shine Machinery, established in 1999 and a pioneer in China's "green veneer" concept, has developed this dryer based on decades of R&D experience and extensive customer feedback. The flipping dryer represents the company's commitment to low-carbon technology, offering a solution that balances production efficiency with environmental responsibility. It is particularly suitable for scale processing plants where floor space is limited, as well as large-scale operations seeking to optimize their drying processes.

Core Working Principle: Material enters through the feed opening and is evenly spread across the flipping plates. As the plates travel to either end of the dryer, they automatically flip 180°, smoothly transferring the veneer to the next layer below. This design ensures that veneers travel back and forth twice within the same layer, effectively doubling the drying path length without increasing the machine's physical dimensions.

Product Features & Advantages

1. High Drying Efficiency with Compact Footprint：The multi-layer reciprocating design allows the dryer to achieve the same production capacity as traditional belt dryers but with significantly shorter equipment length. The compact structure makes it an ideal choice for factories with limited floor space.

2. Extremely Low Veneer Breakage Rate：The flipping plates are supported by rollers running on tracks within the insulated chamber, ensuring smooth and stable operation without sagging. Each layer has a drop height of only approximately 200mm during the flipping transition, minimizing impact and preventing damage that typically occurs from free-fall dropping.

3. Uniform and High-Quality Drying Results：The flipping plates are stamped from solid steel plates, providing excellent load-bearing capacity and preventing wet veneers from deforming during drying. Combined with a sophisticated air distribution system and variable frequency drive, hot air is evenly circulated throughout the drying chamber. Moisture content variation can be controlled within ±1% to ±2%, ensuring consistently high-quality output. Dried veneers emerge flat, with uniform moisture content, free from wrinkles, end-wise ripples, or crack.

4. Energy-Efficient and Cost-Effective Operation：Flexible Fuel Options: The heat source can be an integrated biomass combustion furnace that directly utilizes wood waste, offcuts, branches, and other by-products from the peeling process as fuel, significantly reducing energy costs. Alternative heat sources including steam boilers, thermal oil boilers, thermal oil heaters, steam generators, and mold temperature controllers are also available.

Low Power Consumption: The total installed power is typically just over 100kW, and all motors are small-power units designed for energy efficiency. The newly upgraded dryer reduces overall power consumption by up to 38% compared to conventional models.

Minimal Labor Requirements: With full automation—including automatic feeding, automatic collection, and robotic arm stacking—only 2 to 3 operators are needed per shift to handle feeding, collection, and furnace operation.

Product Structure

The Fully Automatic Flipping Veneer Dryer features a robust and thoughtfully engineered structure designed for durability, efficiency, and ease of maintenance:

1. Drying Chamber & Insulation System：Insulated Housing: The drying chamber is constructed with high-quality insulation panels (100mm side panels and 75mm top panels) made from galvanized steel sheets lined with aluminum silicate blankets and rock wool composite panels, minimizing heat loss and ensuring energy efficiency.

Sealed Design: The enclosure is designed to maintain internal temperature stability and pressure balance, preventing steam condensation caused by temperature differentials between the inside and outside of the dryer.

2. Flipping Plate Conveyor System：Solid Steel Plates: The flipping plates are stamped from, providing excellent rigidity and load-bearing capacity.

Roller Support: Plates are supported by rollers running on heavy-duty guide rails within the chamber, ensuring smooth, stable operation without sagging or sinking.

180° Flipping Mechanism: A specially designed mechanism automatically flips each plate 180° at the end of each layer, gently transferring veneers to the next level.

3. Hot Air Circulation System：Air Distribution: A unique air diversion system ensures even distribution of hot air across the entire drying surface.

Variable Frequency Drive (VFD): Enables precise control of conveyor speed and temperature based on veneer characteristics.

Airflow Optimization: Advanced airflow design maximizes heat transfer efficiency while minimizing energy waste.

4. Heat Exchange System：Multi-Stage Heat Exchange: The heat exchanger features a progressive, multi-stage design where each section is configured differently to ensure even heat distribution across the veneer surface. This patented design eliminates cold spots and ensures uniform drying results.

Flexible Heating Options: Compatible with biomass combustion furnaces, steam boilers, thermal oil heaters, and natural gas burners.

5. Automatic Feeding & Collection System：

Automatic Feeder: Precisely delivers single veneer sheets onto the flipping plates, eliminating misalignment issues common with manual feeding.

Automatic Collection System: Collects dried veneers at the discharge end.

Robotic Stacking: Optional robotic arm stacking system further automates the process and reduces labor requirements.

6. Control System：

PLC-Based Automation: Intelligent control system with HMI interface for easy operation and monitoring.

Real-Time Monitoring: Sensors continuously monitor temperature and humidity within each zone, with automatic adjustments to maintain optimal drying conditions.

Safety Protections: Built-in overload protection, over-temperature alarms, and emergency stop functions ensure safe operation.

Product Applications

The Fully Automatic Flipping Veneer Dryer is widely used in the plywood and veneer manufacturing industry. It is suitable for:

Veneer Types

Core Veneers: For plywood and LVL (laminated veneer lumber) production

Face Veneers: For furniture panels, decorative veneers, and high-quality surface applications

Thick Core Veneers: For structural and load-bearing applications

Wood Species

The dryer handles a wide variety of wood species including poplar, eucalyptus, birch, pine, rubberwood, beech, and various hardwoods and softwoods.

End Products

Furniture Panels: Produces flat, smooth veneers ideal for furniture manufacturing

Blockboards / Lumber Core Plywood: Suitable for high-strength, dimensionally stable core materials

Decorative Veneers: For architectural interiors, flooring, and high-end finishing applications

Plywood Manufacturing: As a key component in the production of high-quality plywood sheets

Production Environments

Small to Medium-Sized Factories: The compact footprint makes it ideal for operations with limited floor space

Large-Scale Production Facilities: Models with higher capacities (up to 80–90 m³/day) meet the demands of industrial-scale operations

Cold Climate Regions: Optional insulation systems are available for operation in cold regions such as Russia and Northern Europe