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MINGHUNG
In plywood manufacturing, different production lines or orders often require processing veneers of varying thicknesses—from as thin as 0.5mm decorative wood veneers to as thick as 3.6mm core or face veneers. Traditional stackers are typically limited to specific thickness ranges, requiring cumbersome mechanical adjustments or even equipment replacement when switching products, severely impacting production flexibility.
Working Principle
The working process of this equipment consists of three main steps:
Step 1: Vacuum Suction Conveying
After leaving the front-end peeler or clipper, the veneer enters the stacker. The vacuum fan generates negative pressure, creating a vacuum zone beneath the conveyor belt through the air hood. The veneer is firmly held against the underside of the conveyor belt and moves forward. The suction force can be flexibly adjusted according to veneer thickness (0.5-3.6mm).
Step 2: Positioning and Release
When the veneer reaches the preset position, photoelectric sensors detect the signal and feed it back to the PLC control system. The control system issues a command to activate the unloading device, which smoothly pushes the veneer onto the receiving lifting platform.
Step 3: Stack Formation
The receiving lifting platform automatically descends by one veneer thickness after each sheet lands, maintaining a constant height at the top of the stack. When the stack reaches the preset height, the platform descends to the lowest position, and the complete stack is removed by forklift or conveyor, completing one stacking cycle.
Core Components
Component | Description |
Vacuum Suction Fan | Generates negative pressure to power suction conveying; pressure adjustable based on veneer thickness—micro-pressure for thin sheets, stronger pressure for thick ones |
Vacuum Conveyor Belt | Specially designed belt with holes or grooves, working with the air hood to create a uniform suction surface, ensuring stable conveying without deviation |
Air Hood (Vacuum Chamber) | Sealed cavity structure connecting the fan and conveyor belt, maintaining a stable negative pressure zone for uniform suction |
PLC Control System | The core of equipment control, centrally managing all operation logic, monitoring real-time status, and supporting online parameter adjustments |
Touch Screen HMI | Human-machine interface displaying real-time data; thickness parameters can be switched with one touch for easy operation |
Servo Unloading Device | Composed of cylinder and pressure plate, executing precise release with placement error ≤ ±1mm for neat stacking |
Hydraulic Lifting Platform | Carries the veneer stack and automatically lifts/lowers; descends layer by layer during stacking, with stack height up to 1200mm |
Key Advantages
1. Universal Thickness, One Machine for All
Covers the full thickness range from 0.5mm to 3.6mm without any mechanical adjustments—thin and thick sheets in one machine, eliminating frequent equipment changes or tedious adjustments.
2. Vacuum Suction, Damage-Free Stacking
Vacuum negative pressure replaces mechanical clamping—no contact scratches, no indentations, perfectly protecting veneer surface quality.
3. Adjustable Suction Force, Strong Adaptability
Air pressure flexibly adjustable based on different thicknesses and materials—micro-pressure for thin sheets to prevent breakage, stronger pressure for thick sheets to ensure stability.
4. Fully Automatic, Labor Saving
Full automation from suction conveying, positioning and release, to lifting stacking—no manual intervention needed; one machine replaces 4-6 workers.
5. High Stacking Precision, Neat Edges
Servo drive combined with high-precision sensors ensures placement error ≤ ±1mm, with neat and tidy stack edges for easy subsequent packaging and handling.
6. PLC Intelligent Control, Easy Operation
Touch screen HMI with thickness parameters that can be preset and stored; one-touch recall when switching products—low operating threshold, easily mastered by ordinary workers.


We are Shandong MINGHUNG Wood Based Panel Machinery Co.,Ltd China factory and manufacturer of full sets of Plywood machinery and Veneer machinery. With many years production experience, advanced production technology,experienced workers and professional engineers, we can offer you the suitable, good and strong machinery for you.





Our Services
Service | Details |
Pre-sales Consultation | Professional selection recommendations and solution planning based on veneer thickness range, production capacity, and site conditions |
Custom Design | Non-standard customization available for veneer dimensions, stacking height, special thickness requirements, etc. |
Installation & Commissioning | Professional engineers dispatched on-site for installation guidance and complete machine commissioning to ensure smooth production start-up |
Operation Training | Systematic operation and maintenance training for on-site operators and maintenance personnel |
After-sales Support | 12-month warranty; video technical support, remote online diagnosis, and on-site repair services |
Spare Parts Supply | Long-term supply of original genuine spare parts to ensure continuous stable operation and minimize downtime losses |
Technical Upgrades | Value-added technical services including control system software upgrades and performance optimization retrofits |
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