Fully Automatic Veneer Peeling Machine

II. Core Technical Features

1. Intelligent Control System

   Utilizes industrial-grade PLC and touch screen HMI

   Features parameter memory, fault diagnosis, and production data statistics

   Supports remote monitoring and operation

2. Automated Material Handling System

   Equipped with automatic loading device using hydraulic grabbing mechanism

   Integrated vision recognition system for automatic log shape and size detection

   Includes automatic unloading and veneer reeling devices

3. Precision Drive System

   Employs servo motors and precision ball screws

   Achieves micron-level precise feed of the knife carriage

   Incorporates high-precision encoders for real-time process monitoring

III. Workflow

1. Automatic Loading Phase

   Hydraulic grabbing mechanism transfers logs to processing position

   Vision system automatically identifies the log centerline

   Spindles auto-clamp and center the log

2. Intelligent Peeling Phase

   System automatically calculates optimal cutting parameters

   Monitors veneer thickness in real-time with automatic adjustment

   Automatically handles log defects and special situations

3. Finished Product Handling Phase

   Automatically completes veneer reeling or stacking

   Automatic core separation and collection

   Automatic production data recording and storage

Ⅳ. Core Peeling Principle

The fundamental principle of the peeling unit in a fully automatic machine remains "Fixed-Axis Rotary Cutting," but its precision, stability, and control methods represent a qualitative leap compared to conventional machines.

1.  Constant Linear Speed Peeling:

      Principle: In traditional machines, the spindle speed might be constant, but as the log diameter decreases, the cutting linear speed drops, affecting veneer quality. Fully automatic models use servo control systems to ensure that the linear speed at the contact point between the knife tip and the log remains constant throughout the peel.

      Implementation: The system calculates the log's instantaneous diameter in real-time and automatically adjusts the spindle speed inversely. Speed is slower at larger diameters and faster at smaller diameters. This ensures consistent cutting conditions and surface quality from start to finish.

2.  Constant Thickness Peeling:

      Principle: The veneer thickness theoretically equals the feed distance per revolution of the knife carriage. To achieve constant thickness, the "rotation" and "feed" motions must maintain a precise mathematical relationship.

     Implementation: The knife carriage feed is controlled by a servo motor and a precision ball screw, synchronized in real-time with the spindle's rotary encoder. For every revolution detected by the encoder, the PLC commands the knife carriage to advance precisely by a set distance (the veneer thickness). This relationship is strictly maintained regardless of speed variations.

3.  Radial Feed:

      During peeling, the knife carriage moves continuously and smoothly towards the center of the log. This movement is the radial feed. The smoothness and accuracy of this motion directly determine the thickness uniformity of the veneer.

Ⅴ. Core Peeling Components

1.  Spindle System: Clamps and drives the log rotation. It is the "power heart" of the automatic peeler.

      Composition:

          Drive Spindle: Driven directly or via a high-precision reducer by a high-power servo motor. Its surface is specially heat-treated for high hardness and wear resistance. The spindle head (tips) is scientifically designed to ensure a powerful grip without damaging the log ends, even at high speeds.

          Tailstock Spindle: Also driven by servo or hydraulic force, it slides on precision guide rails to press against the other end of the log. It is perfectly aligned with the drive spindle to ensure a stable rotational center.

2.  Knife Carriage Assembly: Carries the cutting components and executes the precise radial feed motion. It is the "executing arm" that determines veneer quality.

      Composition:

          Carriage Body: Made of high-rigidity cast iron or welded structure, ensuring no deformation under significant cutting forces.

         Peeling Knife: Made of special alloy tool steel with an optimized edge geometry for sharpness and durability. Often equipped with an Automatic Knife Grinder that sharpens the blade during production breaks, maintaining consistent sharpness.

          Pressure Bar and Holder: This is one of the "soul" components of the peeler.

              Pressure Bar: A bar-shaped component with a specific curve and edge, installed just in front of the knife edge with an adjustable gap.

              Functions:

              Pre-compression: Compresses wood fibers before the knife cuts, preventing checks (splits) on the back of the veneer caused by bending and stretching.

              Thickness Control: Works with the gap to the knife edge to define the actual compacted thickness of the veneer.

              Bending Guidance: Helps the cut veneer curl and leave the log smoothly.

              In fully automatic models, the pressure bar force is often servo-controlled, automatically adjusted based on log material and diameter.

3.  Feed System: Drives the knife carriage for precise linear motion.

      Composition: Servo Motor + Precision Ball Screw Assembly. The servo motor provides precise angular displacement, and the ball screw converts it into linear displacement with nanometer-level accuracy. This is the technical guarantee for achieving "constant thickness" peeling.

4.  Bed and Guide Rails: The foundational platform supporting all moving components.

      Composition: Made of high-grade cast iron or integral welded steel structure, subjected to multiple stress-relief treatments for extreme rigidity and stability. The spindles, tailstock, and knife carriage are mounted on high-precision, heavy-duty linear guide rails, ensuring all movements are smooth, drift-free, and low-friction.

5. Intelligent Control System

Dual-core control architecture with industrial PLC and industrial computer

10-inch color touch HMI

Remote monitoring and data analysis module

Self-diagnosis and early warning system

Ⅵ. Main Advantages

1. Significantly Enhanced Production Efficiency

   Enables continuous 24/7 operation

   Increases production speed by over 40% compared to semi-automatic equipment

   Reduces manual intervention, improving equipment utilization

2. Superior Product Quality Stability

   Veneer thickness tolerance controllable within ±0.02mm

   Eliminates human error through automated operation

   Excellent consistency with over 98% yield rate

3. Substantial Reduction in Operating Costs

   Reduces number of operators required

   Lowers skill requirement and training costs

   Minimizes raw material waste to the greatest extent

Ⅶ. Technical Parameters

Suitable Log Diameter: 150-800mm

Suitable Log Length: 1300-2700mm

Veneer Thickness Range: 0.5-4.0mm

Production Capacity: 20-60 logs/hour

Control Accuracy: ±0.02mm

Total Power: 45-75kw

Why choose us?

We are not only equipment suppliers, but also your reliable business partners. We offer a turnkey solution covering factory planning, equipment installation, commissioning, personnel training and after-sales support. Choosing us means choosing quality, innovation and continuous support.

Machines include:Veneer production line(Log debaker,Veneer peeling machine, Log loader,Automatic stacker)，Blade sharpener,Veneer patching machine,Veneer dryer machine(Veneer roller dryer, Veneer mesh dryer, Veneer press dryer), Veneer gluing machine,Plywood lay-up machine, Veneer jointing machine, Plywood cold press, Hot press machine,Plywood edge trimming cutting machine, Sanding and calibrating machine, Plywood overturn machine, Lift table, and so on.

Our contacts:

Whatsapp: +8618769900191  +8615589105786  +8618954906501

Email: osbmdfmachinery@gmail.com