Wide belt sanding machine abrasive band reciprocating locus modification device

Abstract

The invention discloses a belt reciprocating motion and track correction device for a wide-band sander. The base of the machine base is pivotally fixed with a driving wheel, and a bracket is arranged above the machine base. The driven wheel corresponding to the driving wheel is pivoted, and then the bracket swings with the shaft as the fulcrum in a corrected configuration. The modified configuration is provided with cams side by side on both sides of the guide rod set on the bracket. The two cams will rotate when turning the wheel. Form a fixed distance, which is larger than the guide rod and has clearance, and the distance can move the abrasive belt laterally with the rotation of the two cams, so that the two cams can pull the guide rod with a time difference, so that the bracket can be rotated by the shaft The fulcrum makes simple harmonic motion, so that the abrasive belts around the outer circumference of the driving wheel and the driven wheel can effectively reduce the unilateral wear.

Description

technical field [0001] The invention relates to a sanding machine, in particular to a belt reciprocating motion and track correction device of a broadband sanding machine. Background technique [0002] Sanding machine is a machine table with two rollers whose axes are parallel to each other at intervals, and an abrasive belt is wound around the outer circumference of the two rollers, and a motor is used to drive one of the rollers so that the two rollers can be driven together. The workpiece is pressed on the grinding surface of the abrasive belt, and the working surface can be sanded by friction. [0003] However, the abrasive belt is mainly composed of a non-woven belt or a paper belt coated with a wear-resistant material. The inner hole of the non-woven belt or paper belt is limited by the material factor, and it will be in the shape of a trumpet hole, so the two rollers are worn between them. When sanding, there will often be uneven processing of unilateral force. Speci...

AI Technical Summary

Problems solved by technology

[0005] However, these eccentric devices directly drive the oscillating device to correct the swing of the movable seat at a certain angle left and right. Although it can correct the abrasive belt at any time with the expected reciprocating action, such action methods are not practical, so the market is not adopted. Specifically, the eccentricity of each revolution of the eccentric device is the adjustable and corrected stroke, so if the eccentricity is too small, the adjustable and corrected stroke is quite limited, and it is difficult to achieve the desired effect of correcting the abrasive belt ; If the eccentricity is too large, the adjustment cycle is completed once every revolution, and the correction frequency is not enough to greatly extend the service life of the abrasive belt

Especially in the sanding workpiece, when the workpiece is placed on one side and sanded, the abrasive belt cannot be within the expected trajectory range, causing the abrasive belt to break away and be damaged

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