The belt-type woodworking sander is to tension the endless belt on several belt wheels to drive the belt for continuous movement. A tensioning wheel will also make a small amount of warping to make the belt move laterally. Belt-type woodworking sanders used for surface processing often have fixed or mobile worktables, while belt-type woodworking sanders used for surface processing will use the flexibility of the sanding belt to perform workpieces under the pressure of the template. Processing. Belt-type woodworking sander has the advantages of high efficiency, guaranteed processing accuracy, and easy replacement of sanding belts. Therefore, it is suitable for sanding furniture panels, decorative panels, front and rear panels or large wood-based panels.

Type of wide belt sanding machine

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In the wood processing industry, the sanding process has the following categories:

(1) Plane fixed thickness sanding, eliminating the deviation of workpiece shape and size, ensuring equal parts everywhere, and some can play the role of grinding instead of planing.

(2) The fine sanding of the smoothed surface is used to eliminate the marks after the fixed thickness sanding, the roughness caused by the knife edge and the texture, the burr scars, etc.

(3) Further sand polishing before veneer veneer, dyeing, painting, printing, etc., to improve surface quality and save dyes and paints. Reduce product costs.

(4) Ultra-fine sanding before and after work, such as polishing the workpiece after painting, to obtain a mirror-like bright paint film.

(5) The surface of the workpiece is roughened, which is used for special roughness because the original surface is too smooth.

The relationship between the performance of the abrasive belt and the sanding system

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The abrasive belt is composed of a base material, a binder and an abrasive. The base material determines the flexibility, ductility and tensile strength of the abrasive belt. The decay agent prevents the abrasive belt from falling off the sand under the conditions of strong grinding. The decay strength is high, and it is not sensitive to temperature changes, and it will not stick when grinding at high temperatures. Abrasives are composed of different materials and are divided into different particle sizes.

The quality of sanding has a lot to do with the seams of the sanding belt. The sanding belt has high seam strength, large flexibility, and small thickness tolerance. After sanding, the surface quality of the workpiece is good, and no nodular ripples will be produced. The belt has uniform thickness and the same length at both ends, which can ensure good processing quality, and it is easy to control the swing of the belt.

The thickness of the abrasive belt can be used for coarse sanding, fine sanding and fine sanding of wood and wood-based panels, as well as polishing of lacquer surfaces.

Different sanding heads in the wide belt sanding machine are equipped with different sanding belts to meet the needs of different sanding processes.

Sand frame design

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According to different process requirements, the sanding machine has three forms of sand racks:

(1) Sanding type sand rack, the feeding system is under the belt, and the lifting of the feeding table is used to complete the sanding of workpieces of different thicknesses. Because the working height is not fixed, it is not conducive to the use of the production line.

(2) The lower sand rack and the feeding system are located above the sand belt. Due to the fixed working height, they can be used in the production line.

(3) The mixed sand rack is composed of an upper sand rack and a lower sand rack. It can complete the double-sided fixed-thickness sanding of the workpiece. It is generally designed as a heavy or semi-heavy sand rack. This type of sand rack is mainly used for artificial Board production line.

The design of the sand frame should mainly ensure its rigidity and seismic performance. The sand frame and the frame should be tightly combined to make it a solid whole with the frame. Only when the above two conditions are met, the stability of the sanding process and excellent sanding quality can be guaranteed.