The difference between wood veneer rotary cutting machine without card and with card
In wood production, veneer rotary cutting machine is a key equipment for manufacturing plywood, veneer and other products. Its core function is to rotary cut logs into continuous veneers. According to the different ways of clamping logs, rotary cutting machines can be divided into two types: those without clamping shafts and those with clamping shafts. There are significant differences between the two in terms of structure, applicable scenarios, and processing effects.
1. Clamping principle and structural differences
The rotary cutting machine with a card shaft uses two card shafts (iron cards) at the front and rear to fix the logs. The card shaft is inserted into the center hole of the logs, clamped and driven to rotate by mechanical force. This structure has high requirements for the diameter and roundness of the logs, requiring pre drilling, and the clamping shaft is prone to wear on the ends of the logs, resulting in material waste.
The cardless rotary cutting machine adopts hydraulic or pneumatic devices, which clamp the logs together through the pressure rollers on both sides and the tailstock at the rear, and can be directly fixed without drilling holes. Its structure is more concise, reducing the damage of mechanical components to wood, especially suitable for processing small-diameter wood or bent logs.
2. Processing efficiency and applicability
The card axis machine model has a fixed card axis and strong rotational stability, making it suitable for processing logs with larger diameters and longer lengths. The uniformity of the veneer thickness is better, but the material change time is longer and the efficiency is relatively lower.
The cardless machine model is easy to change materials and can achieve fast and continuous operation, especially suitable for automated production lines. It can fully utilize small-diameter wood resources and improve wood utilization, but its stability is slightly lower when processing large-diameter logs.
3. Cost and Maintenance
The mechanical structure of equipment with card shafts is complex, the cost of replacing card shafts is high, and maintenance is difficult; The cardless model has a simple structure, low maintenance costs, and adjustable hydraulic system pressure, which can adapt to wood of different hardness.
4. Typical application scenarios
The card axis rotary cutting machine is commonly used in traditional plywood factories to process high-quality logs with a diameter of over 30cm; The cardless machine model is widely used in small and medium-sized enterprises to process small-diameter wood, branch materials, or processing residues with a diameter of 10-30cm, helping to efficiently utilize resources.
Both cardless and cardless rotary cutting machines have their own advantages: the former excels in efficiency, flexibility, and low loss, while the latter wins with stability and accuracy. Enterprises can choose comprehensively based on raw material specifications, production scale, and cost budget, or use them in combination to achieve deep processing of full specification wood.
