CN110171240B

CN110171240B - Automatic pencil sharpener for card coating pen of English answer sheet

Info

Publication number: CN110171240B
Application number: CN201910581086.4A
Authority: CN
Inventors: 娄国祎; 程云; 袁晰
Original assignee: Heilongjiang Institute of Technology
Current assignee: Heilongjiang Institute of Technology
Priority date: 2019-06-29
Filing date: 2019-06-29
Publication date: 2020-11-24
Anticipated expiration: 2039-06-29
Also published as: CN110171240A

Abstract

An automatic pencil sharpener for a card coating pen for English answer sheets relates to an automatic pencil sharpener. The upper end of the shell is provided with a plug bush collecting groove at the lower end of a pen inserting hole, the middle of the two clamping rods is bent to be an arc part and oppositely enclosed to form a pen clamping cavity, the clamping rods are hinged to the first connecting rod, the movable contact is fixed to the clamping rods, one end of a pressure spring is fixedly connected with the middle of the clamping rods, the other end of the pressure spring is fixedly connected with the second connecting rod, the second connecting rod is provided with a supporting rod and a fixed stationary contact, the stationary contact and the movable contact are in spaced fit, teeth are formed in the upper end of a pen sharpener seat, a bearing is sleeved and fixed in the middle of the pen sharpener seat, a vertical shaft is fixed to the motor, a gear is fixed to the upper end of the vertical shaft. The pencil can be cut into a pointed cone at one time to expose the pencil core, the pointed end of the pencil core is ground flat and widened, and the card coating efficiency of the answer sheet of the examinee is improved.

Description

Automatic pencil sharpener for card coating pen of English answer sheet

Technical Field

The invention relates to an automatic pencil sharpener, in particular to an automatic pencil sharpener for an English answer sheet card coating pen.

Background

Most English examinations are selection questions, so most pages on English answer sheets are rectangular frames for the selection questions, for example, one question corresponds to four options, four rectangular frames are arranged on the English answer sheet after the serial number corresponding to the question, four ABCD options are written in the four rectangular frames, and examinees need to paint the rectangular frames corresponding to the options which are considered to be correct through a special 2B pencil in black.

When the pencil is used, the end part of the pencil needs to be cut by the pencil sharpener, so that the pencil lead is exposed out of the wooden pencil holder. However, the conventional pencil sharpener generally needs manual driving, the operation is relatively laborious, and the pencil stub is frequently split due to uneven force application, in contrast, some electric pencil sharpeners do not have the problems, but the pencil cut by the electric pencil sharpener on the market at present is the same as the pencil cut by the conventional manual pencil sharpener, and the cut pencil lead is in a sharp cone shape. Therefore, the automatic pencil sharpener which is convenient and quick to use and can expose the pencil lead and grind and widen the tip of the pencil lead at one time is very necessary for English examinees.

Disclosure of Invention

The invention aims to provide an automatic pencil sharpener for an English answer sheet card coating pen, which can cut the end part of a pencil into a pointed cone at one time to expose a pencil lead, grind the pointed end of the pencil lead to be wide and improve the card coating efficiency of an answer sheet of a test taker.

In order to achieve the purpose, the invention adopts the following technical scheme: an automatic pencil sharpener for a card coating pen for English answer sheets comprises a shell, a pencil sharpening cutter holder, a bearing, a sharpening wheel, a motor, a vertical shaft, a power supply, two clamping rods, a first connecting rod, two pressure springs, a second connecting rod and two bevel gears, wherein the shell is cylindrical, the upper end of the shell is open at the upper end, the lower end of the shell is closed at the lower end, a pencil inserting hole is formed in the center of the cover plate, a collecting tank is inserted and sleeved at the lower end of the shell, a discharge hole is formed in the lower end face of the shell, the two clamping rods are arranged below the pencil inserting hole of the cover plate in a central symmetry manner, the middles of the two clamping rods are respectively bent to be arc-shaped parts, arc-shaped parts of the two clamping rods oppositely enclose a pencil clamping cavity, one ends of the two clamping rods are respectively hinged to the first connecting rod, the first connecting rod is fixedly connected with the inner wall of the shell, movable contact points, the other ends of the two pressure springs are fixedly connected with the two connecting rods respectively, the two connecting rods are fixedly connected with the inner wall of the shell respectively, the two connecting rods are respectively fixed with a supporting rod, the free ends of the two supporting rods are respectively fixed with a static contact, the two static contacts are respectively matched with the corresponding movable contacts at intervals, the pencil sharpening tool holder is arranged below the pencil clamping cavity, the pencil sharpening tool holder is cylindrical in appearance, a funnel-shaped pencil sharpening groove is communicated in the middle, a blade is fixed on the inner wall of the funnel-shaped pencil groove, a chip removal notch is communicated with the pencil sharpening tool holder corresponding to the blade, teeth are arranged at the upper end of the pencil sharpening tool holder along the circumferential direction, the inner ring of the bearing is sleeved and fixed at the middle position of the pencil sharpening tool holder, the outer ring of the bearing is fixedly connected with the inner wall of the shell through a positioning rod, a sharpening wheel is matched at intervals below the pencil sharpening tool holder, a vertical, the grinding wheel is characterized in that the motor is vertically fixed on the inner bottom surface of the shell, a vertical shaft is fixed at the output end of the motor, a gear is coaxially fixed at the upper end of the vertical shaft and is meshed with the teeth, one bevel gear is coaxially fixed at the lower end of the vertical shaft, the other bevel gear is coaxially fixed at the outer end of a wheel shaft of the grinding wheel and is meshed with the gear shaft, the power supply is fixed inside the shell, and when two movable contacts are in close contact with the corresponding two stationary contacts, the power supply is conducted with the motor to supply.

Compared with the prior art, the invention has the beneficial effects that: the pencil sharpening device is reasonable and effective in structure, the arc-shaped parts of the two clamping rods enclose to form a pencil clamping cavity, a pencil can be clamped and positioned under the action of the pressure spring, the two clamping rods are opened when a pencil is inserted, the movable contact and the stationary contact are in tight contact, the motor can automatically start the motor, the motor can simultaneously control the pencil sharpening seat and the sharpening wheel to rotate, the pencil sharpening seat can sharpen the end part of the pencil into a pointed cone and expose a pencil lead, the sharpening wheel can sharpen the pointed end of the pencil lead, the pointed end of the pencil lead is widened, one-time blackening can be conveniently carried out on a rectangular frame on an answer sheet, and the answer sheet painting efficiency of an examinee is improved.

Drawings

Fig. 1 is an axonometric view of the overall structure of an automatic pencil sharpener for an english answer sheet card coating pen of the invention;

FIG. 2 is an isometric view of the housing of the present invention in a disassembled configuration;

FIG. 3 is an isometric view of the internal structure of the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 3;

fig. 5 is a circuit schematic of the present invention.

Detailed Description

The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.

The first embodiment is as follows: as shown in fig. 1-5, the invention discloses an automatic pencil sharpener for an english answer sheet card coating pen, which comprises a housing 1, a pencil sharpener seat 6, a bearing 7, a grinding wheel 8, a motor 9, a vertical shaft 10, a power supply 12, two clamping rods 2, two connecting rods one 3, two compression springs 4, two connecting rods two 5 and two bevel gears 11, wherein the housing 1 is cylindrical, the upper end of the housing 1 is open, the lower end of the housing is closed, a cover plate 1-1 is fixed at the upper end of the housing 1, a pen insertion hole is arranged at the center of the cover plate 1, a collecting tank 1-2 is inserted at the lower end of the housing 1, a discharge port 1-3 is arranged at the lower end of the housing 1, the two clamping rods 2 are arranged below the pen insertion hole of the cover plate 1-1 in a central symmetry manner, the middle of the two clamping rods 2 is respectively bent to be an arc-shaped part, the arc-shaped parts of the two clamping rods 2 oppositely enclose a pencil cavity, the two connecting rods I3 are fixedly connected with the inner wall of the shell 1, the movable contacts 2-2 are respectively fixed on the outer sides of the other ends of the two clamping rods 2, one ends of the two pressure springs 4 are fixedly connected with the outer sides of the arc-shaped parts of the two clamping rods 2 respectively, the other ends of the two pressure springs 4 are fixedly connected with the two connecting rods II 5 respectively, the two connecting rods II 5 are fixedly connected with the inner wall of the shell 1 respectively, the two connecting rods II 5 are fixedly connected with the supporting rods 5-1 respectively, the free ends of the two supporting rods 5-1 are fixedly connected with the static contacts 5-2 respectively, the two static contacts 5-2 are matched with the corresponding movable contacts 2-2 at intervals respectively, the pencil sharpener seat 6 is arranged below the pencil clamping cavity, the appearance of the pencil sharpener seat is cylindrical, a funnel-shaped pencil sharpening groove is communicated in the middle, a blade is fixed on the inner wall of, teeth 6-1 are arranged at the upper end of the pencil sharpener seat 6 along the circumferential direction, an inner ring of the bearing 7 is sleeved and fixed at the middle position of the pencil sharpener seat 6, an outer ring of the bearing 7 is connected and fixed with the inner wall of the shell 1 through a positioning rod 7-1, grinding wheels 8 are matched below the pencil sharpener seat 6 at intervals, an upright rod 1-5 is fixed on the inner bottom surface of the shell 1, a wheel shaft is coaxially fixed on the grinding wheel 8 and rotatably penetrates through a shaft hole formed at the upper end of the upright rod 1-5, the motor 9 is vertically fixed on the inner bottom surface of the shell 1, a vertical shaft 10 is fixed at the output end of the motor 9, a gear 10-1 is coaxially fixed at the upper end of the vertical shaft 10 and meshed with the teeth 6-1, one of the two bevel gears 11 is coaxially fixed at the lower end of the vertical shaft 10, the other bevel gear is coaxially fixed at, when the two movable contacts 2-2 are closely contacted with the corresponding two fixed contacts 5-2, the power supply 12 is conducted with the motor 9 to supply power to the motor.

The second embodiment is as follows: as shown in fig. 1, in this embodiment, a friction nano-generator 13 is placed in the collection tank 1-2 and filled with a plurality of polytetrafluoroethylene pellets, the polytetrafluoroethylene pellets are connected in series into a whole through a flexible cord, when a pencil is cut, the friction nano-generator 13 can convert vibration mechanical energy into electric energy, so that an electrostatic field is formed between the polytetrafluoroethylene pellets, sawdust and refill powder are electrostatically adsorbed, the sawdust and refill powder are prevented from being scattered around after the collection tank 1-2 is taken down, the polytetrafluoroethylene pellets are connected in series through the flexible cord into a whole, and the integrity is strong, and the friction nano-generator 13 is taken out to wash and dry the polytetrafluoroethylene pellets, so that the polytetrafluoroethylene pellets can be reused.

The third concrete implementation mode: as shown in fig. 2 and 3, the first embodiment is further described, a protective cover 1-4 is integrally formed at the bottom of the housing 1, the motor 9 and two bevel gears 11 are covered by the protective cover 1-4, and the protective cover 1-4 is provided with through holes at positions corresponding to the vertical shaft 10 and the wheel shaft of the grinding wheel 8, so as to prevent wood chips and refill powder from entering between the motor 9 and the two bevel gears 11 to affect normal operation, thereby achieving the shielding and protecting effects.

The fourth concrete implementation mode: as shown in fig. 3 and 4, in the present embodiment, a first specific embodiment is further described, and the anti-slip rubber pads 2-1 are fixed on the inner sides of the arc-shaped portions of the two clamping rods 2, so as to increase the friction force on the pencil and prevent the pencil from rotating.

The fifth concrete implementation mode: as shown in fig. 2, in this embodiment, a first embodiment is further described, the magnets 14 are respectively embedded and fixed in the lower end of the outer wall of the housing 1 and the inner side wall of the collecting groove 1-2, so that the collecting groove 1-2 and the housing 1 can be fixed by magnetic attraction, and the installation and the disassembly are simple and fast.

Referring to fig. 2 and 3, after a pencil is inserted into the casing 1 through the insertion hole of the cover plate 1-1, a pencil clamping cavity enclosed by the arc parts of the two clamping rods 2 clamps and positions the pencil under the action of a pressure spring 4, the pencil clamping cavity is slightly smaller than the section of the pencil, so that the two clamping rods 2 can be spread after the pencil is inserted, the two movable contacts 2-2 are in close contact with the corresponding stationary contacts 5-2, a power supply 12 is conducted with a motor 9 to supply power to the motor, the pencil is pressed downwards continuously, the motor 9 drives a pencil sharpening seat 6 to rotate through a gear 10-1 at the upper end of a vertical shaft 10, when a funnel-shaped pencil sharpening groove of the pencil sharpening seat 6 rotates, the end part of the pencil is cut through a blade, the pencil lead is exposed out of a wooden pencil holder, sawdust and lead powder are discharged to the bottom in the casing 1 through a chip removal notch, the pencil lead is in a pointed shape, and, the motor 9 drives the grinding wheel 8 to rotate through the two bevel gears 11, so that the sharp cone of the pen core is ground flat, the tip of the pen core is widened, a rectangular frame on the answer sheet is conveniently blackened at one time, and the card coating efficiency is improved.

Referring to fig. 1, in order to facilitate the observation of the examinee, transparent plastic observation windows can be arranged on the side wall of the shell 1 corresponding to the pencil sharpener base 6 and the sharpening wheel 8; referring to fig. 4, in order to enable a pencil to be smoothly inserted into the pencil clamping cavity, inclined surfaces are arranged towards the center of the pencil clamping cavity on the upper surfaces of the arc-shaped parts of the two clamping rods 2 and the upper end surfaces of the two anti-skidding rubber pads 2-1; referring to fig. 5, two movable contacts 2-2 are connected through a wire, and the wire has a certain looseness, so that the wire cannot be disconnected from the movable contacts 2-2 after the two clamping bars 2 are spread, wherein one of the fixed contacts 5-2 is connected with the motor 9, the motor 9 is connected with the power supply 12, and the power supply 12 is connected with the other fixed contact 5-2 through wires.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an english answer sheet scribbles card pen and uses automatic pencil sword which characterized in that: comprises a shell (1), a pencil sharpening cutter holder (6), a bearing (7), a grinding wheel (8), a motor (9), a vertical shaft (10), a power supply (12), two clamping rods (2), two connecting rods I (3), two pressure springs (4), two connecting rods II (5) and two bevel gears (11), wherein the shell (1) is cylindrical, the upper end of the shell is open, the lower end of the shell is closed, a cover plate (1-1) is fixed at the upper end of the shell (1), a pencil inserting hole is formed in the center of the cover plate (1-1), a collecting tank (1-2) is inserted at the lower end of the shell (1), a discharge port (1-3) is formed in the lower end face of the shell (1), the centers of the two clamping rods (2) are symmetrically arranged below the pencil inserting hole of the cover plate (1-1), the middles of the two clamping rods (2) are respectively bent to be arc parts, and the arc parts of the two, one end of each of the two clamping rods (2) is hinged with one of the two connecting rods (3), the two connecting rods (3) are fixedly connected with the inner wall of the shell (1), the movable contacts (2-2) are fixedly arranged on the outer sides of the other ends of the two clamping rods (2), one end of each of the two pressure springs (4) is fixedly connected with the outer sides of the arc-shaped parts of the two clamping rods (2), the other ends of the two pressure springs (4) are fixedly connected with the two connecting rods (5), the two connecting rods (5) are fixedly connected with the inner wall of the shell (1), the two connecting rods (5) are respectively fixedly provided with a supporting rod (5-1), the free ends of the two supporting rods (5-1) are respectively fixedly provided with a stationary contact (5-2), the two stationary contacts (5-2) are respectively matched with the corresponding movable contacts (2-2) at intervals, and the pencil sharpener seat (6) is arranged below the pencil clamping, the pencil sharpener is cylindrical and is provided with a funnel-shaped pencil sharpening groove in the middle, a blade is fixed on the inner wall of the funnel-shaped pencil sharpening groove, a pencil sharpening base (6) is correspondingly communicated with the blade and is provided with a chip removal opening, teeth (6-1) are arranged at the upper end of the pencil sharpening base (6) along the circumferential direction, an inner ring of a bearing (7) is sleeved and fixed at the middle position of the pencil sharpening base (6), an outer ring of the bearing (7) is fixedly connected with the inner wall of a shell (1) through a positioning rod (7-1), grinding wheels (8) are matched below the pencil sharpening base (6) at intervals, a vertical rod (1-5) is fixed on the inner bottom surface of the shell (1), a wheel shaft is coaxially fixed on the grinding wheels (8), the wheel shaft penetrates through a shaft hole formed in the upper end of the vertical rod (1-5) in a rotating manner, a motor (9) is vertically fixed on the inner bottom, a gear (10-1) is coaxially fixed at the upper end of the vertical shaft (10), the gear (10-1) is meshed with the teeth (6-1), one bevel gear (11) is coaxially fixed at the lower end of the vertical shaft (10), the other bevel gear is coaxially fixed at the outer end of the wheel shaft of the grinding wheel (8), the two bevel gears and the gear are meshed, the power supply (12) is fixed inside the shell (1), and when the two movable contacts (2-2) are tightly contacted with the corresponding two static contacts (5-2), the power supply (12) is conducted with the motor (9) to supply power.

2. The automatic pencil sharpener for the card coating pen of the English answer sheet according to claim 1, which is characterized in that: a friction nano generator (13) is arranged in the collecting groove (1-2) and is filled with a plurality of polytetrafluoroethylene pellets, and the polytetrafluoroethylene pellets are connected in series into a whole through flexible wires.

3. The automatic pencil sharpener for the card coating pen of the English answer sheet according to claim 1, which is characterized in that: the bottom in the shell (1) is integrally provided with a protective cover (1-4), the protective cover (1-4) covers the motor (9) and the two bevel gears (11), and the protective cover (1-4) is provided with through holes at the positions corresponding to the vertical shaft (10) and the wheel shaft of the grinding wheel (8).

4. The automatic pencil sharpener for the card coating pen of the English answer sheet according to claim 1, which is characterized in that: and anti-skid rubber pads (2-1) are fixed on the inner sides of the arc parts of the two clamping rods (2).

5. The automatic pencil sharpener for the card coating pen of the English answer sheet according to claim 1, which is characterized in that: the lower end of the outer wall of the shell (1) and the inner side wall of the collecting groove (1-2) are respectively embedded and fixed with a magnet (14) correspondingly, so that the collecting groove (1-2) and the shell (1) can be fixed in a magnetic attraction manner.