The main function of the wood chip machine is to cut various types of logs, bamboo, etc. into uniform slices, and can also slice board skin, veneer, bamboo branches, etc. Wood chippers are used in the preparation section of industrial production such as paper mills, artificial boards, medium-density fiberboards, and various wood chip production bases. The working principle of the wood chipper is to cut wood into thin slices by blade cutting or chipping. The rotary cutter is used to process wood segments of a certain length and diameter into continuous veneer strips for the production of plywood, fine wood upper boards and other artificial board veneers. The main technical parameters of the rotary cutter are the maximum length and diameter of the processable wood segments. The working principle of the rotary cutter is to clamp the two ends of the wood segment through the left and right clamping shafts and drive it to rotate. The blade of the rotary cutter installed on the knife bed is parallel to the axis of the clamping shaft and feeds along its vertical direction, and the veneer of equal thickness is cut along the direction of the annual ring of the wood segment.
According to the search results, wood chip machines are mainly of two types: drum type and disc type. Drum wood chippers are mainly used for cutting branches, small-diameter wood, board skin, laths, etc. with a diameter or thickness of less than 120 mm, while disc wood chippers have three types: few knives, multiple knives and spiral surface knives. Among them, the spiral surface knife disc chipper has a neat incision, less wood chips, less wear on the knife disc, and the length of the cut wood chips is consistent. The rotary cutter can be divided into concentric rotary cutter and eccentric rotary cutter according to whether the wood segment rotates around its own axis. Concentric rotary cutters are further divided into rotary cutters with clamping shafts and rotary cutters without clamping shafts. The rotary cutter with a clamping shaft is suitable for large-diameter wood, while the rotary cutter without a clamping shaft is used for small-diameter wood. The rotary cutter is generally large in size and complex in structure. The log needs to be centered before the machine is put on. If the centering is not accurate, intermittent veneer strips or narrow veneers will be spun out when the rotary cut starts.
Since the working principle of the wood chip machine involves steps such as cutting and extrusion, it may consume more energy. However, some new wood chippers use more energy-saving technologies, such as ultrasonic motors, and the wood chipper has the characteristics of large torque output at low speed. The rotary cutter usually uses a servo motor to drive the fine screw to feed during the working process. To change the board thickness, you only need to enter the board thickness number without changing the gear, so the rotary cut precision is high. In addition, some rotary cutters have the characteristics of power saving, simple operation and convenient maintenance.