SU207720A1 - CONE CUTTING MACHINE FOR CUTTING WOOD ON A PUPPY - Google Patents

Description

The invention relates to a cone-cutting machines that can be used in pulp mills, logging companies for the production of high-quality process chips from wood, affected by internal rot, and also from large-diameter logs.

Chippers are known, including a cone rotor, chippers, guide pads for moving wood to the knives, feeding and extracting mechanisms. However, they are not suitable for grinding thick logs, since the diameter of the disc should be 4-5 times the diameter of the wood to be ground.

In addition, these machines do not ensure the removal of rot when chopping firewood, as well as the separation of sapwood from firewood.

In the proposed machine, the tapered rotor is made of a lengthwise composite of separate tapered sections, the diameter of which decreases in the direction of movement of the wood to be chopped. This allows the central defective (e.g., rotten) part of the wood to be removed without chopping it and ensures continuous cutting and obtaining fine, uniform, intact chips.

The chipper machine consists of several steel cones I, which rotate in annular support 2. The ring bearing housing is mounted on an oscillating

frame 3 and, thus, any cone can be removed from the cutting area by lifting it using the hydrodiller 4. Each cone is rotated from a separate electric motor 5 through a V-belt transmission.

To reduce the amount of torque transmitted to the wood, adjacent cones rotate in different directions. The length of the cone, depending on its diameter, is chosen so that the sum of the two torques from the adjacent cones is zero.

There are through-slots 6 on the surface of the cones for the passage of chips, and one or several cutting knives 7 are installed inside. On the inner surface of the cones there are mounted stabilizing helicoidal plates, which on the knife are the blade of the blade. The blades of the knife blade form a step that determines the amount of knife release. Consequently, the inner surface of the cone allows the wood to move in the axial direction strictly by one and that constant value per kilo degree of rotor rotation.

Thus, as the knife is inserted into the wood, the latter, pressing against the stabilizing helicoidal plates, moves uniformly in the axial direction of the iodine by the action of forced feeding and tightening force. To increase the tightening, the knives in the cones are not located along the radius, but at an acute angle to it.

Work maschiny. Healthy wood is fed inside the first cone. The knives of the cones, screwed into it, remove the chips, which through the slits enter the receiver for id, cut, and then to the conveyor and are removed. If there are air vents on the surfaces of the cones, the chips can be transported by air to the cyclone. If logs with an internal gland are fed to the cutting, one or more of the last cones are removed from the cutting area, depending on the diameter of the rot. Then the wood goes to the first cone. The knives remove the chips from the healthy part of the log and it comes out through the slits.

When wood is chopped at the proposed conical chipper, a fine, intact chip is obtained with a constant angle of cut in the absence of a fine and coarse chip fraction.

Subject invention

A conical chipping machine for chopping wood into chips used in

pulping, including a tapered rotor, chippers, stabilizing plates for fixing the amount of wood moving to the knives, feeding and extracting mechanisms, characterized in that

in order to remove the central defective, for example, rotten part of the wood without chopping it, to ensure continuous cutting, and to obtain thin, uniform, intact chips, the tapered rotor of the maschi is made of a composite length of individual tapered sections, the diameter of which decreases in the direction of the wood to be chopped.

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