How to avoid cracking of plywood machinery in production
Cracking is a common quality issue in the production process of plywood, which affects the strength and appearance of the product. By optimizing mechanical operations and process control, cracking can be effectively reduced. The following are key measures:
1. Control the moisture content
Before production, ensure that the plywood is dried evenly and the moisture content is controlled between 8% -12%. Excessive drying or wetting can cause uneven internal stress, and machinery should be equipped with precise humidity detectors to monitor and adjust drying parameters in real time.
2. Optimize the hot pressing process
Avoid excessive temperature or pressure during hot pressing. Mechanical equipment should be pressurized in sections and gradually heated to ensure even curing of the adhesive and reduce internal stress. It is recommended to use an intelligent hot press machine that automatically adjusts the pressure and temperature curves.
3. Reasonable selection and maintenance of cutting tools
Rotary cutting and cutting tools must be kept sharp to avoid tearing fibers. Regularly check the wear of the cutting edge, replace or polish it in a timely manner, ensure a smooth cutting surface, and reduce the occurrence of small cracks.
4. Reduce mechanical vibration
Excessive vibration during equipment operation can cause damage to the sheet metal. Install shock absorbers, regularly check mechanical balance, ensure smooth operation of the production line, and avoid cracking caused by external forces.
5. Standardize stacking and storage
The pressed boards should be stacked flat and avoid direct sunlight or humid environments. The mechanical conveying system needs to be handled with care to reduce collisions.
Through the collaborative management of the above machinery and processes, the quality of plywood can be significantly improved, the cracking rate can be reduced, and production efficiency can be guaranteed.
