Symmetrical type chalk automatic film-coating equipment

Abstract

The invention discloses symmetrical type chalk automatic film-coating equipment. The symmetrical type chalk automatic film-coating equipment comprises a rack, a bottom plate, two film feeding mechanisms, a chalk feeding mechanism and a drive device, wherein each film feeding mechanism comprises a mark shearing assembly and a heat-sealing roller as well as two cut-off rollers, a heating tube is arranged in the heat-sealing roller, a semi-circular groove is formed in the peripheral surface of the heat-sealing roller. According to the symmetrical type chalk automatic film-coating equipment disclosed by the invention, the left heat-sealing roller and the right heat-sealing roller are matched, and heating tubes are arranged in the left heat-sealing roller and the right heat-sealing roller, so that a film shrinks and clings to the surface of a chalk, and therefore, the film is coated on the chalk; through the action of the mark shearing assemblies, a plurality of mark tearing slots are formed in the film, so that the film is torn while a user uses the chalk according to the needs, and therefore, hands are not contaminated. Moreover, the chalk resource is saved, and the chalk coated withthe film enables chalk dust to not contaminate hands and other objects which are in contact with the chalk, so that the chalk dust is prevented from affecting the environment, and harm, on a human body, of the chalk dust is reduced.

Description

technical field [0001] The invention relates to the technical field of chalk processing, in particular to a symmetrical chalk automatic coating equipment. Background technique [0002] Teachers often need to use chalk to write and draw on the blackboard to explain. In a class of 45 to 50 minutes, they often touch the chalk directly with their hands. When the class is over, they often leave a layer of white chalk dust on their hands. When writing on the blackboard, the hands are covered with chalk dust for a long time, which has a certain impact on the body; and when the chalk is not in use, it will also fall off and have chalk dust, which will affect the surrounding environment. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned shortcoming, and provide a kind of symmetrical type chalk automatic coating equipment. [0004] In order to achieve the above object, the specific scheme of the present invention is as follow...

AI Technical Summary

Problems solved by technology

[0002] Teachers often need to use chalk to write and draw on the blackboard to explain. In a class of 45 to 50 minutes, they often touch the chalk directly with their hands. When the class is over, they often leave a layer of white chalk dust on their hands. When writing on the blackboard, the hands are covered with chalk dust for a long time, which will have a certain impact on the body; and when the chalk is not in use, it will also fall off and have chalk dust, which will affect the surrounding environment

Images