SU1102684A1 - Toothed roller for picking-up wooden partifles - Google Patents

Description

The invention relates to gear rollers for the selection of wood particles and can be applied in the woodworking industry in the production of chipboard.

Known gear roll containing the drive shaft mounted on him a package of gear discs, the extreme of which are made of composite 1.

The disadvantage of this roller is the uneven trapping of wood particles.

The closest to the invention according to the technical essence and the achieved result is a gear roller for picking wood particles, including a shaft with a package of gear discs mounted on it, the teeth of which have straight front and convex broken back edges.

A disadvantage of the known roller is its low technological capability, since the roller does not provide ejection and dispersion of particles.

The purpose of the invention is the expansion of technological capabilities.

The goal is achieved by the fact that the front angle of the teeth of the disk is (-5 °) (-f 15 °), and the region of the back edge adjacent to the vertex has a length equal to 3-10% of the schaga teeth along the circumference, while the teeth of the adjacent disks are located on the shaft in a checkerboard pattern.

FIG. 1 shows a diagram of a roller, a general view; in fig. 2 shows section A-A in FIG. one; in fig. 3 — node 1 in FIG. 2

The drum contains a drive shaft 1 mounted in support bearings 2. A package of gear discs 3 separated by bushings 4 is mounted on the shaft. The package is clamped with nuts

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5. The teeth of the discs 3 are made with an asymmetrical profile, with a straight front and a convex broken back edge. The rake angle of the teeth of the disk is (-5 °) - (+ 15 °), which ensures the ejection of selected particles from the grooves and maintains good particle trapping.

The region of the posterior face adjacent to the vertex has a length equal to 3–10% of the schaga teeth along the circumference. Such an execution of the rear face ensures uniformity of particle selection while maintaining high productivity and wear resistance of teeth.

The teeth of the adjacent disks are arranged in a checkerboard pattern, which provides the best loosening of the particles in the selection process. In this case, for each decimeter of the diameter of the drum, there are 8-14 rows of teeth along the circumference.

The drum works as follows. Mounted above the exit end of the belt conveyor (not shown), the roller 1 is rotated. The teeth of the disk 3 capture the falling particles, take them out of the layer, throw it over the drum, drop it for further processing with

5 simultaneous dispersion.

The use of the proposed roller in the production of particle boards allows increasing the productivity of forming machines, increasing the uniformity of chipboard formation, reducing the density fluctuations of the plates over the area, which is provided by the design of the roller, which allows simultaneously with the selection of particles to produce their discharge and dispersion.

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Claims (1)

(56) A TOOTHED ROLLER FOR SELECTING WOOD PARTICLES, including a shaft with a set of gear discs mounted on it, the teeth of which have a straight front and convex broken back trailing edge, characterized in that, in order to expand technological capabilities, the front angle of the disc teeth is (-5 °) - (+ 15 °), and the portion of the posterior face adjacent to the apex has a length equal to 3-10% of the pitch of the teeth along the circumference, while the teeth of adjacent discs are staggered on the shaft.