Method for manufacturing automatic blackboard eraser
An automatic blackboard eraser and its production method technology, which is applied in the field of teaching aids, can solve the problems of chalk dust sucking into the air duct, time-consuming and labor-intensive, and not being able to erase the blackboard, etc.
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[0022] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:
[0023] Such as figure 1 and figure 2 Shown, a kind of manufacture method of automatic blackboard eraser comprises blackboard 1, traction device 2, blackboard eraser groove 3, blackboard eraser 4, slide bar 5, wherein, described blackboard 1 top has a traction device 2, and below has a slide bar 5 , blackboard eraser groove 3 two ends link to each other with traction device 2 and slide bar 5 respectively, blackboard eraser 4 is arranged in blackboard eraser groove 3. The traction device 2 includes two pulleys 21 and a belt.
[0024] A kind of manufacture method of automatic blackboard eraser, wherein, comprises the following steps:
[0025] Step 1, fix the traction device 2 above the blackboard 1, and fix the slide bar 5 below the blackboard 1;
[0026] Step 2, fix one end of the blackboard eraser groove 3 on the belt of the traction device 2, ...
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