CN113580819A - Intelligent pencil sharpener with good dust removal effect - Google Patents
Intelligent pencil sharpener with good dust removal effect Download PDFInfo
- Publication number
- CN113580819A CN113580819A CN202110733363.6A CN202110733363A CN113580819A CN 113580819 A CN113580819 A CN 113580819A CN 202110733363 A CN202110733363 A CN 202110733363A CN 113580819 A CN113580819 A CN 113580819A
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- CN
- China
- Prior art keywords
- fixedly connected
- bevel gear
- dust removal
- main body
- body box
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L23/00—Sharpeners for pencils or leads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
- B08B15/026—Boxes for removal of dirt, e.g. for cleaning brakes, glove- boxes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/04—Cleaning by suction, with or without auxiliary action
- B08B5/043—Cleaning travelling work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L23/00—Sharpeners for pencils or leads
- B43L23/008—Sharpeners for pencils or leads with rotating cutting bodies
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- Filtering Of Dispersed Particles In Gases (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses an intelligent pencil sharpener with a good dust removal effect, which comprises a main body box, a driving mechanism, a dust removal mechanism, a clamping mechanism, a shell, a base cover, a driving cylinder and anti-slip pads, wherein the driving mechanism is arranged inside the main body box, the dust removal mechanism is arranged on the main body box, the upper end of the main body box is connected with the shell through threads, the clamping mechanism is arranged inside the shell, the lower end of the main body box is connected with the base cover through threads, the driving cylinder is fixedly connected inside the main body box, the anti-slip pads are fixedly connected to the lower end of the base cover, the number of the anti-slip pads is four, and the four anti-slip pads are uniformly distributed on the base cover. The invention relates to an intelligent pencil sharpener with a good dust removal effect, which has the characteristics of collecting dust generated during pencil sharpening and preventing dangers to students in the pencil sharpening process.
Description
Technical Field
The invention belongs to the technical field of intelligent pencil sharpeners, and particularly relates to an intelligent pencil sharpener with a good dust removal effect.
Background
The pencil sharpener comprises a main body, a pencil clamping mechanism, a pencil sharpening mechanism and a pencil sharpening box, wherein a groove capable of containing a pencil sharpener is formed in the bottom of the pencil sharpening box, the pencil sharpener is inserted and positioned in the groove, the existing pencil sharpener which is sold and applied in the market is intelligent, can automatically feed pencils, and accordingly can automatically sharpen pencils. But there are some problems with current penknife: 1. when the pencil is automatically fed, the pencil needs to be driven to move, so that danger is easy to occur during the operation of students; 2. the pencil inner core can produce great dust when polishing at the in-process of cutting a pencil, inhales the human body with the dust easily at the in-process in clearance garbage bin, influences student's health. Therefore, an intelligent pencil sharpener with good dust removal effect needs to be designed.
The invention content is as follows:
the invention aims to solve the problems and provide the intelligent pencil sharpener with good dust removal effect, so that the problems in the background art are solved.
In order to solve the problems, the invention provides an intelligent pencil sharpener technical scheme with good dust removal effect, which comprises the following steps:
the utility model provides an effectual intelligent penknife of dust removal, includes main part case, actuating mechanism, dust removal mechanism, clamping machine structure, casing, base cover, driving cylinder, slipmat, the inside of main part case is provided with actuating mechanism, be provided with dust removal mechanism on the main part case, there is the casing upper end of main part case through threaded connection, the inside of casing is provided with clamping machine and constructs, there is the base cover lower extreme of main part case through threaded connection, the inside fixedly connected with driving cylinder of main part case, the lower extreme fixedly connected with slipmat of base cover, the quantity of slipmat is four, four the slipmat is in evenly distributed covers the base.
Preferably, the driving mechanism comprises a first bearing, a driving shaft, a square plate, a square sleeve, a pencil sharpening block, a second bearing, an internal thread cylinder, an external thread pipe, a limiting plate, a limiting rod, a first bevel gear, a second bevel gear, a third bearing, a connecting shaft, a third bevel gear, a fourth bevel gear and a servo motor, the first bearing is fixedly sleeved inside the driving cylinder, the driving shaft is fixedly sleeved inside the first bearing, the square plate is fixedly connected to one end of the driving shaft, the square sleeve is slidably connected to the outer side of the square plate, the pencil sharpening block is fixedly connected to the upper end of the square sleeve, the second bearing is fixedly sleeved inside the main box, the internal thread cylinder is fixedly sleeved inside the second bearing, the external thread pipe is connected inside the internal thread cylinder through threads, the limiting plate is fixedly connected to the upper end of the external thread pipe, and the limiting rod is fixedly connected to the upper end of the main box, the one end fixedly connected with bevel gear one of interior thread section of thick bamboo, the outside fixedly connected with bevel gear two of drive shaft, the fixed cover in the inside of drive cylinder has connect bearing three, the fixed cover in the inside of bearing three has connect the connecting axle, the outside fixedly connected with bevel gear three of connecting axle, the one end fixedly connected with bevel gear four of connecting axle, the outside fixedly connected with servo motor of drive cylinder, servo motor's output shaft with the connecting axle passes through bolted connection.
Preferably, the first bevel gear is meshed with the third bevel gear, and the diameter of the first bevel gear is larger than that of the third bevel gear.
Preferably, the second bevel gear is meshed with the fourth bevel gear, and the diameter of the fourth bevel gear is larger than that of the second bevel gear.
Preferably, the limiting plate is in contact with the square sleeve, and the limiting plate is in sliding connection with the limiting rod.
Preferably, the number of the limiting rods is two, and the two limiting rods are symmetrically distributed on the main body box.
Preferably, the dust removal mechanism comprises a dust collection box, filter screens, a connecting pipe, a dust collection pump and a seal sleeve, the dust collection box is fixedly connected inside the main body box, the two filter screens are symmetrically distributed and fixedly connected inside the dust collection box, the connecting pipe is fixedly connected to the lower end of the dust collection box, the connecting pipe is fixedly connected with the main body box, the dust collection pump is fixedly connected inside the main body box, the seal sleeve is fixedly sleeved inside the lower end of the main body box, the seal sleeve is fixedly connected to the output end of the dust collection pump, the filter cover is fixedly connected to the lower end of the main body box, the output end of the dust collection pump is located inside the filter cover, and the air outlet pipe of the dust collection pump penetrates through the main body box.
Preferably, the clamping mechanism comprises a rubber block, clamping rods, springs and a moving block, the four rubber blocks are evenly distributed and slidably connected inside the shell, the four clamping rods are evenly distributed and slidably connected inside the shell, the springs are arranged on the outer sides of the clamping rods, the clamping rods are fixedly connected with the rubber block, one end of each spring is fixedly connected with the shell, the other end of each spring is fixedly connected with the rubber block, the moving block is fixedly connected with one end of each clamping rod, and the moving block is in contact with the shell.
The invention has the beneficial effects that: the invention relates to an intelligent pencil sharpener with good dust removal effect, which has the characteristics of collecting dust generated during pencil sharpening and preventing dangers to students in the pencil feeding process, and compared with the traditional intelligent pencil sharpener with good dust removal effect, the intelligent pencil sharpener with good dust removal effect has the following two beneficial effects in specific use:
firstly, by additionally arranging the structure of the external threaded pipe, the internal threaded cylinder, the square sleeve and the like in the main box, when the pencil sharpening block rotates to sharpen a pencil, the pencil sharpening block can be driven to move through the thread matching between the external threaded pipe and the internal threaded cylinder, so that the danger of the movement of the pencil to students in the pencil sharpening process can be avoided, and the rubber block can be pushed by the elasticity of the spring to fix the pencil;
secondly, through adding on the main part case and establishing dust absorption pump, water tank and dust absorption case isotructure, at the in-process of cutting a pencil, the dust that produces when polishing the pencil inner core can be through the inside that dust absorption case and dust absorption pump inhaled the connecting pipe, then with the inside of dust particle row income water tank to can avoid the dust to increase when using and influence student's health.
Description of the drawings:
for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a perspective view of the overall construction of the present invention;
FIG. 2 is a front cross-sectional view of FIG. 1 of the present invention;
FIG. 3 is a top view of the suction box of FIG. 2 of the present invention;
FIG. 4 is an enlarged view of the portion A of FIG. 2 according to the present invention;
FIG. 5 is an enlarged view of the portion B of FIG. 2 according to the present invention;
fig. 6 is an enlarged view of the structure of the portion C of fig. 2 according to the present invention.
In the figure: 1. a main body case; 2. a drive mechanism; 3. a dust removal mechanism; 4. a clamping mechanism; 5. a housing; 6. a base cover; 7. a drive cylinder; 8. a non-slip mat; 21. a first bearing; 22. a drive shaft; 23. a square plate; 24. a square sleeve; 25. a pencil sharpening block; 26. a second bearing; 27. an internal threaded barrel; 28. an externally threaded tube; 29. a limiting plate; 20. a limiting rod; 201. a first bevel gear; 202. a second bevel gear; 203. a third bearing; 204. a connecting shaft; 205. a third bevel gear; 206. a fourth bevel gear; 207. a servo motor; 31. a dust collection box; 32. a filter screen; 33. a connecting pipe; 35. a dust suction pump; 36. sealing sleeves; 37. a filter housing; 41. a rubber block; 42. installing a clamping rod; 43. a spring; 44. moving the mass.
The specific implementation mode is as follows:
as shown in fig. 1 to 6, the following technical solutions are adopted in the present embodiment:
example (b):
the utility model provides an intelligent pencil sharpener that dust removal effect is good, includes main part case 1, actuating mechanism 2, dust removal mechanism 3, clamping machine structure 4, casing 5, base cover 6, driving cylinder 7, slipmat 8, the inside of main part case 1 is provided with actuating mechanism 2, be provided with dust removal mechanism 3 on the main part case 1, there is casing 5 upper end of main part case 1 through threaded connection, the inside of casing 5 is provided with clamping machine structure 4, there is base cover 6 lower extreme of main part case 1 through threaded connection, the inside fixedly connected with driving cylinder 7 of main part case 1, the lower extreme fixedly connected with slipmat 8 of base cover 6, the quantity of slipmat 8 is four, four the slipmat 8 is in evenly distributed on the base cover 6, slipmat 8 can make the device put more stably.
Wherein the driving mechanism 2 comprises a first bearing 21, a driving shaft 22, a square plate 23, a square sleeve 24, a pencil sharpening block 25, a second bearing 26, an internal thread cylinder 27, an external thread pipe 28, a limit plate 29, a limit rod 20, a first bevel gear 201, a second bevel gear 202, a third bearing 203, a connecting shaft 204, a third bevel gear 205, a fourth bevel gear 206 and a servo motor 207, the first bearing 21 is fixedly sleeved inside the driving cylinder 7, the driving shaft 22 is fixedly sleeved inside the first bearing 21, one end of the driving shaft 22 is fixedly connected with the square plate 23, the square sleeve 24 is slidably connected outside the square plate 23, the pencil sharpening block 25 is fixedly connected to the upper end of the square sleeve 24, the second bearing 26 is fixedly sleeved inside the main body box 1, the internal thread cylinder 27 is fixedly sleeved inside the second bearing 26, the external thread pipe 28 is connected inside the internal thread cylinder 27 through threads, the upper end fixedly connected with limiting plate 29 of outer thread pipe 28, the upper end fixedly connected with gag lever post 20 of main part case 1, the one end fixedly connected with bevel gear 201 of internal thread section of thick bamboo 27, the outside fixedly connected with bevel gear 202 of drive shaft 22, the inside fixed cover of drive cylinder 7 has cup jointed bearing three 203, the inside fixed connecting axle 204 that has cup jointed of bearing three 203, the outside fixedly connected with bevel gear 205 of connecting axle 204, the one end fixedly connected with bevel gear 206 of connecting axle 204 is four, the outside fixedly connected with servo motor 207 of drive cylinder 7, servo motor 207's output shaft with connecting axle 204 passes through bolted connection, can drive limiting plate 29 through the screw-thread fit between internal thread section of thick bamboo 27 and the outer thread pipe 28 and remove.
The first bevel gear 201 is meshed with the third bevel gear 205, the diameter of the first bevel gear 201 is larger than that of the third bevel gear 205, and the third bevel gear 205 can drive the first bevel gear 201 to rotate at a slow speed.
The second bevel gear 202 is meshed with the fourth bevel gear 206, the diameter of the fourth bevel gear 206 is larger than that of the second bevel gear 202, and the fourth bevel gear 206 can drive the second bevel gear 202 to rotate quickly.
The limiting plate 29 is in contact with the square sleeve 24, the limiting plate 29 is in sliding connection with the limiting rod 20, and the limiting plate 29 can limit the external thread pipe 28.
The number of the limiting rods 20 is two, the two limiting rods 20 are symmetrically distributed on the main body box 1, and the two limiting rods 20 can enable the limiting plates 29 to be stressed in a balanced manner.
Wherein the dust removing mechanism 3 comprises a dust suction box 31, a filter screen 32, a connecting pipe 33, a dust suction pump 35 and a sealing sleeve 36, the interior of the main body box 1 is fixedly connected with a dust suction box 31, the interior of the dust suction box 31 is fixedly connected with two symmetrically distributed filter screens 32, the lower end of the dust collection box 31 is fixedly connected with a connecting pipe 33, the connecting pipe 33 is fixedly connected with the main body box 1, a dust suction pump 35 is fixedly connected inside the main body box 1, a sealing sleeve 36 is fixedly sleeved inside the lower end of the main body box 1, the sealing sleeve 36 is fixedly connected with the output end of the dust suction pump 35, the lower end of the main body box 1 is fixedly connected with a filter cover 37, the output end of the dust suction pump 35 is positioned in the filter cover 37, the air outlet pipe of the dust suction pump 35 penetrates through the main body box 1, the connecting pipe 33 can transmit suction force, and the filter cover 37 can prevent sundries from being sucked by the dust suction pump 35.
The clamping mechanism 4 comprises a rubber block 41, clamping rods 42, springs 43 and a moving block 44, wherein the four rubber blocks 41 are evenly distributed in the casing 5 in a sliding manner, the four clamping rods 42 are evenly distributed in the casing 5 in a sliding manner, the spring 43 is arranged on the outer side of each clamping rod 42, the clamping rods 42 are fixedly connected with the rubber blocks 41, one end of each spring 43 is fixedly connected with the casing 5, the other end of each spring 43 is fixedly connected with the corresponding rubber block 41, the moving block 44 is fixedly connected with one end of each clamping rod 42, the moving block 44 is in contact with the casing 5, and the springs 43 can push the rubber blocks 41 to fix the pencils through elasticity.
The using state of the invention is as follows: when the pencil sharpener is used, the moving block 44 is pulled, the moving block 44 drives the rubber block 41 to move through the clamping rod 42, the spring 43 is compressed, a pencil is inserted into the inner side of the rubber block 41, the moving block 44 is loosened, the spring 43 is reset, the spring 43 pushes the rubber block 41 to clamp the pencil through elasticity, the servo motor 207 is started, the servo motor 207 drives the connecting shaft 204 to rotate, the connecting shaft 204 drives the bevel gear three 205 and the bevel gear four 206 to rotate, the bevel gear four 206 drives the driving shaft 22 to rotate through the bevel gear two 202, the driving shaft 22 drives the pencil sharpening block 25 to rotate through the square plate 23 and the square sleeve 24, the pencil can be sharpened by the pencil sharpening block 25 in the rotating process, the bevel gear three 205 drives the internal thread cylinder 27 to rotate through the bevel gear one 201 in the rotating process of the pencil sharpening block 25, the internal thread cylinder 27 drives the limiting plate 29 to lift through the thread matching with the external thread cylinder 28 in the rotating process of the limiting plate 29, limiting plate 29 promotes square cover 24 and upwards removes at the in-process of lift, square cover 24 drives in the in-process of removing and cuts a piece 25 and carry out feed motion, thereby can avoid the in-process of cutting a pencil need remove the pencil, and start dust absorption pump 35 at the in-process of cutting a pencil, dust absorption pump 35 is with the inside air suction of base cover 6, and discharge the outside to main part case 1 through the outlet duct, make the inside of base cover 6 form the negative pressure, the suction that the negative pressure produced passes through the inside that connecting pipe 33 transmitted to dust collection box 31, dust collection box 31 will cut the dust that produces when pen through filter screen 32 and inhale the inside of base cover 6 and concentrate the collection, thereby give and can avoid the dust to splash and influence student health.
While there have been shown and described what are at present considered to be the fundamental principles of the invention and its essential features and advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (8)
1. The utility model provides a good intelligent pencil sharpener of dust removal effect, includes main part case (1), actuating mechanism (2), dust removal mechanism (3), clamping machine structure (4), casing (5), base cover (6), driving cylinder (7), slipmat (8), its characterized in that: the inside of main part case (1) is provided with actuating mechanism (2), be provided with dust removal mechanism (3) on main part case (1), there is casing (5) upper end of main part case (1) through threaded connection, the inside of casing (5) is provided with clamping mechanism (4), there is base cover (6) lower extreme of main part case (1) through threaded connection, the inside fixedly connected with driving cylinder (7) of main part case (1), the lower extreme fixedly connected with slipmat (8) of base cover (6), the quantity of slipmat (8) is four, four slipmat (8) are in evenly distributed on base cover (6).
2. The intelligent pencil sharpener with good dust removal effect as claimed in claim 1, is characterized in that: the driving mechanism (2) comprises a first bearing (21), a driving shaft (22), a square plate (23), a square sleeve (24), a pencil sharpening block (25), a second bearing (26), an internal thread cylinder (27), an external thread pipe (28), a limiting plate (29), a limiting rod (20), a first bevel gear (201), a second bevel gear (202), a third bearing (203), a connecting shaft (204), a third bevel gear (205), a fourth bevel gear (206) and a servo motor (207), wherein the first bearing (21) is fixedly sleeved in the driving cylinder (7), the driving shaft (22) is fixedly sleeved in the first bearing (21), one end of the driving shaft (22) is fixedly connected with the square plate (23), the square sleeve (24) is slidably connected to the outer side of the square plate (23), the pencil sharpening block (25) is fixedly connected to the upper end of the square sleeve (24), the second bearing (26) is fixedly sleeved in the main body box (1), an internal thread cylinder (27) is fixedly sleeved inside the bearing II (26), an external thread pipe (28) is connected inside the internal thread cylinder (27) through threads, a limiting plate (29) is fixedly connected to the upper end of the external thread pipe (28), a limiting rod (20) is fixedly connected to the upper end of the main body box (1), a bevel gear I (201) is fixedly connected to one end of the internal thread cylinder (27), a bevel gear II (202) is fixedly connected to the outer side of the driving shaft (22), a bearing III (203) is fixedly sleeved inside the driving cylinder (7), a connecting shaft (204) is fixedly sleeved inside the bearing III (203), a bevel gear III (205) is fixedly connected to the outer side of the connecting shaft (204), a bevel gear IV (206) is fixedly connected to one end of the connecting shaft (204), and a servo motor (207) is fixedly connected to the outer side of the driving cylinder (7), the output shaft of the servo motor (207) is connected with the connecting shaft (204) through a bolt.
3. The intelligent pencil sharpener with good dust removal effect as claimed in claim 2, wherein: the bevel gear I (201) is meshed with the bevel gear III (205), and the diameter of the bevel gear I (201) is larger than that of the bevel gear III (205).
4. The intelligent pencil sharpener with good dust removal effect as claimed in claim 2, wherein: the bevel gear II (202) is meshed with the bevel gear IV (206), and the diameter of the bevel gear IV (206) is larger than that of the bevel gear II (202).
5. The intelligent pencil sharpener with good dust removal effect as claimed in claim 2, wherein: the limiting plate (29) is in contact with the square sleeve (24), and the limiting plate (29) is in sliding connection with the limiting rod (20).
6. The intelligent pencil sharpener with good dust removal effect as claimed in claim 2, wherein: the number of the limiting rods (20) is two, and the two limiting rods (20) are symmetrically distributed on the main body box (1).
7. The intelligent pencil sharpener with good dust removal effect as claimed in claim 1, is characterized in that: the dust removal mechanism (3) comprises a dust collection box (31), a filter screen (32), a connecting pipe (33), a dust collection pump (35), a sealing sleeve (36) and a filter cover (37), the dust collection box (31) is fixedly connected to the inside of the main body box (1), the two filter screens (32) are symmetrically distributed and fixedly connected to the inside of the dust collection box (31), the connecting pipe (33) is fixedly connected to the lower end of the dust collection box (31), the connecting pipe (33) is fixedly connected with the main body box (1), the dust collection pump (35) is fixedly connected to the inside of the main body box (1), the sealing sleeve (36) is fixedly sleeved on the inside of the lower end of the main body box (1), the sealing sleeve (36) is fixedly connected with the output end of the dust collection pump (35), the filter cover (37) is fixedly connected to the lower end of the main body box (1), and the output end of the dust collection pump (35) is located inside of the filter cover (37), an air outlet pipe of the dust suction pump (35) penetrates through the main body box (1).
8. The intelligent pencil sharpener with good dust removal effect as claimed in claim 1, is characterized in that: the clamping mechanism (4) comprises a rubber block (41), a clamping rod (42), a spring (43) and a moving block (44), wherein the four rubber blocks (41) are evenly distributed and are slidably connected inside the shell (5), the four clamping rods (42) are evenly distributed and are slidably connected inside the shell (5), the spring (43) is arranged on the outer side of each clamping rod (42), the clamping rods (42) are fixedly connected with the rubber blocks (41), one end of each spring (43) is fixedly connected with the shell (5), the other end of each spring (43) is fixedly connected with the rubber blocks (41), the moving block (44) is fixedly connected with one end of each clamping rod (42), and the moving block (44) is in contact with the shell (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110733363.6A CN113580819B (en) | 2021-06-30 | 2021-06-30 | Intelligent pencil sharpener with good dust removal effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110733363.6A CN113580819B (en) | 2021-06-30 | 2021-06-30 | Intelligent pencil sharpener with good dust removal effect |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113580819A true CN113580819A (en) | 2021-11-02 |
| CN113580819B CN113580819B (en) | 2023-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110733363.6A Active CN113580819B (en) | 2021-06-30 | 2021-06-30 | Intelligent pencil sharpener with good dust removal effect |
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| CN (1) | CN113580819B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114347702A (en) * | 2021-12-17 | 2022-04-15 | 德清县恒昌纺器涂料厂 | Ceramic pencil sharpener |
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| CN212267096U (en) * | 2020-05-19 | 2021-01-01 | 宁波多达电子科技有限公司 | Electric pencil sharpener |
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| US20070151113A1 (en) * | 2004-05-25 | 2007-07-05 | Joe Green | Pencil sharpening device |
| JP2008105293A (en) * | 2006-10-26 | 2008-05-08 | Matsushita Electric Ind Co Ltd | Electric pencil sharpener |
| CN209176401U (en) * | 2018-11-13 | 2019-07-30 | 东莞市沃达办公设备有限公司 | A kind of electric pencil-sharpener with cleaning function |
| CN110171240A (en) * | 2019-06-29 | 2019-08-27 | 黑龙江工程学院 | A kind of English marking answer sheet pen automatic pencil knife |
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| CN212267096U (en) * | 2020-05-19 | 2021-01-01 | 宁波多达电子科技有限公司 | Electric pencil sharpener |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114347702A (en) * | 2021-12-17 | 2022-04-15 | 德清县恒昌纺器涂料厂 | Ceramic pencil sharpener |
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| Publication number | Publication date |
|---|---|
| CN113580819B (en) | 2023-04-28 |
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