Veneer machine and peeling knife
The quality of plywood is largely determined by the quality of the veneer. Therefore, the manufacture of veneer is one of the core links of plywood production. With the development of technology, the precision of veneer peeling machine is getting higher and higher, the material of peeling knife is better, and the quality of veneer has also been improved. The most common method is the rotary cutting method, which has the advantage of high production efficiency and high wood utilization.
The working principle of the rotary peeling machine is to make the log rotate, and the rotary peeling knife is pushed through the hydraulic pressure or the screw to make the linear feed movement for cutting. As the diameter of the log decreases, the rotary paring knife is kept closer to the log, so that continuous strips of veneer can be cut from the log.
According to the power supply that drives the rotation of the log, the veneer peeling machine is divided into spindle peeling and non-spindle peeling.
The logs on the spindle barker are clamped by clamping shafts on both sides of the equipment. The card shaft is driven by the motor to rotate the wood chip, and the paring knife is driven by the motor to move forward or backward in a straight line. The log of the spindle barker is driven by the friction roller to rotate, and the motor drives the screw to rotate, so that the barker moves forward or backward in a straight line. In the process of rotating peeling, in order to obtain a high-quality veneer with a flat surface and uniform thickness, it is usually necessary to consider the type of wood, the diameter of the log, the thickness of the veneer, the accuracy of the paring knife and other factors to ensure good rotating peeling conditions, adjust the Angle parameters, peeling speed, rotation, and the position of the paring knife.
The Angle value of the grinding Angle of the peeling knife. The sharpening Angle of the peeling knife should be determined according to the material of the peeling knife, the thickness of the veneer, the type of wood, the temperature and the moisture content of the wood. The principle of cutting Angle of the paring knife should be as follows: the sharpness of the knife and the toughness of the knife must be ensured. Due to factors such as the type of wood, the conditions of peeling, the thickness of the veneer, the structure and accuracy of the peeling machine, the height of the cutting blade can be positive or negative, even in the middle of the rotary knife, higher than the end of the rotary knife. We, SHJ can provide a variety of peeling knives and professional solutions, welcome to consult.
