Automatic blackboard device

Abstract

The invention discloses an automatic blackboard device which comprises a blackboard body, a sliding frame, an eraser seat, an eraser body, a collecting tank, a first driving mechanism, a second driving mechanism and a control device, wherein the sliding frame comprises a pair of horizontally arranged first guide rails and a vertically arranged second guide rail; the eraser body is arranged on the eraser seat; the collecting trough is connected with the lower side part of the eraser seat; an opening of the collecting trough faces the eraser body; the collecting trough comprises a main body made of rigid plastic and a front side wall made of rubber; when the eraser body maintains contact with the blackboard body, the front side wall is closely contacted with the blackboard body; the control device controls the first driving mechanism and the second driving mechanism to alternately work; and in each work cycle, the first driving mechanism drives the second guide rail to move a preset distance along the first guide rails first, and then the second driving mechanism drives the eraser seat to move from one end of the second guide rail to the other end of the second guide rail. The automatic blackboard device realizes automatic erasing of chalk writing on the blackboard body.

Description

technical field [0001] The invention relates to an automatic blackboard device. Background technique [0002] Although electronic whiteboards are increasingly used in the field of classroom teaching, it is a time-consuming and laborious task to completely replace the equipment, and blackboards are still the most commonly used teaching aids. Especially for some teachers with many years of teaching experience, chalk writing on the blackboard has almost become an important part of their teaching. But the inconvenience of the traditional blackboard is that at the end of each class, or before writing on the blackboard needs to be rewritten, the chalk writing on the blackboard needs to be manually erased. On the one hand, it is a waste of time, and on the other hand, chalk dust is also likely to have adverse effects on human health. Contents of the invention [0003] The invention designs and develops an automatic blackboard device. [0004] The technical scheme provided by t...

AI Technical Summary

Problems solved by technology

But the inconvenience of the traditional blackboard is that at the end of each class, or before writing on the blackboard needs to be rewritten, the chalk writing on the blackboard needs to be manually erased

On the one hand, it is a waste of time, and on the other hand, chalk dust is also likely to have adverse effects on human health.

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