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ALVA automatic board feeding prepress is a core automated piece of equipment in the plywood production line. It connects the veneer splicing and hot pressing processes, undertaking the functions of automatic conveying, precise positioning, and prepress forming of veneer blanks.
It can effectively enhance the bonding strength and flatness of finished plywood, and optimize the operation efficiency and capacity of the entire production line.
| Equipment Model | ALVA814×8/6 |
| Nominal Pressure | 6000 KN |
| Board Feeding Direction | Horizontal |
| Opening Stroke | 1800mm |
| Worktable Surface | 1370×2700mm |
| Pressure Resistance | ≤25Mpa |
| Quantity | 2 |
| Power | 15KW+5.5KW |
| Machine Weight | Approx. 22 Tons |
| Overall Dimensions | 3610×1370×4500mm |
Equipped with an intelligent conveying and positioning system, it can directly connect to the preceding veneer splicing process, automatically receiving and conveying veneer blanks. Accurate alignment and positioning of blanks are achieved via photoelectric sensing and limit devices. The whole process requires no manual handling or adjustment, completely eliminating positioning deviations caused by manual operations, greatly reducing labor intensity, and ensuring consistent processing quality of each batch of blanks.
Adopting a hydraulically driven control system, the pressure parameters can be flexibly adjusted according to veneer blanks of different thicknesses and materials. During operation, uniform and stable prepressure is applied to the blanks, which can effectively expel air between blank layers, making the veneer layers fit more closely. This avoids defects such as blistering and delamination in the subsequent hot pressing process, and significantly improves the structural stability and surface flatness of finished plywood.
It supports seamless linkage with upstream and downstream equipment in the production line (including veneer splicers, hot presses, and conveyor lines), and can automatically adjust the board feeding speed and prepress cycle according to the operation rhythm of the entire production line. The equipment is equipped with a PLC programmable control system and a touch operation interface, allowing for intuitive and simple parameter setting. It also features an automatic fault alarm function, facilitating real-time monitoring and maintenance by operators and ensuring the continuous and stable operation of the production line.
This equipment is widely applicable to the production and processing of multi-layer solid wood boards, plywood, blockboards, and other board types. It can be customized with different worktable sizes and pressure parameters according to customer requirements, suitable for the automated upgrading and transformation of large, medium, and small-sized plywood production lines.
1.Blank Receiving: It connects to the discharge end of the preceding veneer splicing process, automatically receives the spliced veneer blanks, and transfers the blanks to the to-be-processed area of the prepress via the conveying device.
2.Precise Positioning: After the blanks enter the prepressing station, position calibration is completed through positioning devices (such as photoelectric sensors and limit mechanisms), ensuring that the placement angle and position of the blanks on the workbench meet the prepressing requirements.
3.Prepressing Operation: Upon the completion of positioning, the equipment activates the hydraulic system, applying uniform pressure to the blanks. This action makes the veneer layers fit closely together and expels the air between the layers, thus finishing the prepress forming process.
4.Blank Output: After the prepressing process, the equipment automatically opens the station and transfers the prepressed blanks to the next procedure (usually the hot press) through the conveying mechanism, while getting ready to receive the next batch of blanks.
5.Linked Circulation: According to the overall rhythm of the production line, the equipment links up with the upstream and downstream equipment, repeating the cycle of "receiving - positioning - prepressing - outputting" to ensure the continuous operation of the production line.
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