Backstop device of wood sawing machine

Abstract

The invention provides a backstop device of a wood sawing machine, and the backstop device is reasonable in structure, safe and reliable in use and capable of effectively preventing wood from moving backwards. The backstop device comprises a backstop seat body and a backstop claw, wherein the backstop seat body is arranged above a wood input mechanism on a wood sawing machine case, the backstop claw is arranged on the backstop seat body and can swing up and down through a rotating shaft, the lower surface of the backstop claw is an arc face which is evenly provided with backstop saw teeth, and the arc circle center of the arc face deviates from the axis of the rotating shaft.

Description

technical field [0001] The invention relates to a wood sawing machine, in particular to an anti-reverse device of the wood sawing machine. Background technique [0002] In the wood processing industry, series of woodworking vertical sawing machines such as straight-line trimming vertical sawing machines and automatic single-chip vertical sawing machines are widely used. Since the sawing direction of the saw blade of the woodworking vertical saw machine is opposite to the feed direction of the operator pushing the wood, and the tangential speed of the saw blade is often as high as 75 m / s. Therefore, in the actual wood sawing process, it is unavoidable that the sawn finished wood, especially the edge material, will be reversely bounced and shot at the operator, often causing major safety accidents such as equipment damage or even casualties. [0003] In order to reduce the occurrence of the above-mentioned safety accidents, a woodworking saw machine with a backstop has appear...

AI Technical Summary

Problems solved by technology

like figure 1 , the existing wood sawing machine mainly includes a chassis 1' and a wood input mechanism 2' and a wood output mechanism 3' across the workbench of the chassis 1'. The interior of the chassis 1' is located between the wood input mechanism 2' and the wood output An upper rotating shaft 4' and a lower rotating shaft 5' are arranged at intervals between the mechanisms 3'. The upper and lower rotating shafts are respectively equipped with a saw blade group 6'. A non-return device that restricts the return of wood. The non-return device includes a non-return seat 71' located above the input mechanism 2' of the cabinet and a non-return seat 71' that can swing up and down through the rotating shaft. Claw 72', when the wood is fed backward, the anti-reverse claw is lifted; when the wood is reversely moved by the reverse bounce of the saw blade, since the anti-reverse claw can only swing within a certain angle range along the axis of the rotation axis, Thereby preventing the forward reverse movement of the wood, the anti-reverse device plays a certain role of safety protection. The above-mentioned known anti-reverse claw is generally a flat straight plate, and its cross-section gradually decreases from top to bottom to form a sharp point that can resist the wood. Angle, the reverse action of this anti-reverse claw cannot be adjusted relative to the size of the wood, and when the thickness or diameter of the wood is large, the angle a' between the non-reverse claw and the wood will be very small. When the angle a' is close to 30 degrees, the anti-reverse effect will be lost or the anti-reverse effect will not be good, and the reverse ejection of the wood cannot be effectively prevented; moreover, when the sawing surface of the wood is irregular, the anti-reverse device located above the wood often It is lifted by accident, and cannot achieve the anti-reverse effect; therefore, the anti-reverse effect of this structure is not very reliable, and cannot completely prevent the occurrence of personal injury accidents caused by reverse ejection of wood

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