An automatic pencil sharpener for English answer card coating pen

Abstract

The invention discloses an automatic pencil knife for an English answer sheet smearing pencil, and relates to an automatic pencil knife. The automatic pencil knife for the English answer sheet smearing pencil comprises a housing, wherein a pencil insertion hole is formed in the upper end of the housing, a collection groove is inserted into the lower end of the housing, the middles of two clampingrods are bent into arc portions and oppositely folded into a pencil clamping cavity, the clamping rods are hinged with connection rods I, the clamping rods are fixed with movable contacts, two pressure springs are arranged, one end of each pressure spring is fixedly connected with the middle of each clamping rod, the other end of each pressure spring is fixedly connected with a connection rod II,each connection rod II is provided with a branch rod, and fixed with a fixed contact, the fixed contacts are in clearance fit with the movable contacts, gear teeth are manufactured at the upper end ofa pencil knife seat, a bearing is fixed in the middle position of the pencil knife seat in sleeving mode, a vertical shaft is fixed on a motor, a gear is fixed at the upper end of the vertical shaftand engaged with the gear teeth, one of two bevel gears is fixed at the lower end of the vertical shaft, the other bevel gear is fixed at the outer end of a wheel shaft of a grinding wheel, the two bevel gears are engaged with each other, and a power source is fixed in the housing. The automatic pencil knife for the English answer sheet smearing pencil can cut the end of the pencil into a pointedcone so as to expose a pencil lead, grinds and widens the tip of the pencil lead so as to obtain a flush and wide tip for the pencil lead, and improves sheet smearing efficiency for examinees.

Description

technical field [0001] The invention relates to an automatic pencil sharpener, in particular to an automatic pencil sharpener for coating pens on English answer sheets. Background technique [0002] Most English tests are multiple-choice questions, so most pages on the English answer sheet are rectangular boxes for multiple-choice questions. For example, if there are four options for a question, there will be four options after the serial number corresponding to the question on the English answer sheet. Rectangular box, ABCD four options are written in the four rectangular boxes, and candidates need to use a special 2B pencil to blacken the rectangular box corresponding to the option that they think is correct. [0003] When the pencil is in use, its end needs to be cut by a pencil sharpener, so that the pen core is exposed outside the wooden pen holder. However, traditional pencil sharpeners generally need to be driven by manpower, the operation is laborious, and the penci...

AI Technical Summary

Problems solved by technology

However, traditional pencil sharpeners generally need to be driven by manpower, the operation is laborious, and the pencil tip is often split due to uneven force. In contrast, some electric pencil sharpeners do not have the above problems, but the electric pencil sharpeners currently on the market The pencil cut by the pencil sharpener is the same as the pencil cut by the traditional human pencil sharpener. The pen cores cut out are all pointed and conical. To blacken the rectangular frame on the English answer sheet with such a pencil needs to be within the rectangular frame It is only time-consuming and labor-intensive to paint the rectangular frame repeatedly. In the examination room where every second counts, the efficiency of candidates’ painting of answer sheets directly affects their test scores.

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