Pencil sharpener with adjustable cutting degree for card coating pencil for English exam and use method of pencil sharpener

Abstract

The invention relates to a pencil sharpener with an adjustable cutting degree for a card coating pencil for an English exam. The pencil sharpener is characterized by comprising a working disk, an upper casing, a lower casing, a pencil feeding mechanism, a pencil sharpening mechanism, a driving mechanism and a pencil stopping mechanism, wherein the upper casing and the lower casing are detachably connected onto the working disk; the pencil feeding mechanism is detachably connected onto the upper casing; the pencil sharpening mechanism is arranged above the middle of the working disk; the driving mechanism is arranged below the middle of the working disk; and the pencil stopping mechanism for controlling the pencil sharpener to stop operating. A use method for the pencil sharpener with the adjustable cutting degree for the card coating pencil for the English exam comprises a pencil feeding step, a pencil sharpening step, a rotation stopping step, a resetting step, a pencil taking step and the like. According to the pencil sharpener disclosed by the invention, the cutting degree of a pencil lead can be adjusted, and pencil chips on the sharpener can be cleaned by a hairbrush in real time; and the pencil sharpener is convenient to detach so as to be conveniently maintained, and accordingly the pencil chips can be conveniently treated.

Description

technical field [0001] The invention relates to the technical field of pencil sharpeners, in particular to a pencil sharpener for English test card-painting pens with adjustable cutting degree and a use method thereof. Background technique [0002] In the English test, candidates are required to use a special 2B pencil to answer the questions on the answer sheet. Usually students will use a pencil sharpener to cut pencils before the exam, and then bring them into the exam room. However, because the tip of the pencil is relatively fragile, many students accidentally break the tip of the pencil before or during the exam and need to re-cut it. [0003] There are various pencil sharpeners in the prior art, and there is no shortage of pencil sharpeners for automatically cutting pencils. Since the pencil needs to go deep into the pencil sharpener for cutting, the user cannot see whether the front section of the pencil has been cut to a proper position, so it is necessary to desi...

AI Technical Summary

Problems solved by technology

[0005] But the above-mentioned patent still has the following problems: 1. The structure and position of the sliding block and the ejector rod of the above-mentioned patent are fixed, the contact position between the pencil tip and the sliding block is fixed, and the degree of cutting of the pencil, that is, the diameter of the pen core, is fixed and cannot be adjusted; 2. The round knife of the above patent will accumulate a large amount of pencil shavings after working for a long time, so that its cutting effect will be greatly reduced; 3. It is inconvenient to disassemble the existing pencil sharpener shell and internal components. Once a certain part is damaged, It is difficult for ordinary consumers to repair by themselves

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