Pen grinding device

Abstract

The utility model discloses a pencil sharpening device which comprises a shell, a pencil sharpener body and a pencil sharpener body, a first inserting hole is formed in one side of the shell, and the first inserting hole is suitable for a pencil core to stretch into the shell; an annular groove extending in the circumferential direction of the disc body is formed in the circumferential side wall of the disc body, the width of the annular groove is gradually reduced from an opening of the annular groove to the bottom of the annular groove in the radial direction of the disc body, the two wall faces, in the width direction of the annular groove, of the annular groove are configured to be first grinding faces, and the first grinding faces are configured to be second grinding faces. The disc body is rotatably arranged in the shell around the axis of the disc body, and the annular groove is matched with the first insertion hole in position so that the first polishing face can polish the refill. And the driving assembly is arranged on the shell, and the driving assembly is connected with the disc body so as to drive the disc body to rotate.

Description

Technical Field

[0001] The present application belongs to the technical field of stationery products, and specifically relates to a pen sharpening device. Background Art

[0002] When eyebrow pencils, card pens and Tibetan pens are used, the pen cores need to be cut or polished into flat pen cores. However, there is no device for directly polishing the flat pen cores in the prior art. Instead, the pen cores are polished into a flat shape by hand cutting or on a grindstone, which is more troublesome. Utility Model Content

[0003] The purpose of the utility model is to provide a new technical solution for a pen sharpening device to solve the problems mentioned in the background technology.

[0004] The utility model provides a pen sharpening device, comprising: a shell, one side of the shell is provided with a first insertion hole, the first insertion hole is suitable for the pen core to extend into the shell; a disc body, the circumferential side wall of the disc body is provided with an annular groove extending along its own circumference, in the radial direction of the disc body, the width of the annular groove gradually decreases from the opening of the annular groove to the bottom of the annular groove, the two wall surfaces of the annular groove in its own width direction are configured as first grinding surfaces, and the disc body is rotatably arranged in the shell around its own axis, the annular groove is adapted to the position of the first insertion hole, so that the first grinding surface can grind the pen core; a driving component, the driving component is arranged in the shell, and the driving component is connected to the disc body to drive the disc body to rotate.

[0005] Optionally, a second polishing surface is provided at the bottom of the annular groove, and the second polishing surface is suitable for polishing the end surface of the pen core.

[0006] Optionally, the cross-section of the annular groove is an isosceles triangle or an isosceles trapezoid.

[0007] Optionally, there is a distance between the axis of the first insertion hole and the axis of the disk body.

[0008] Optionally, a second insertion hole is provided on one side of the shell, and the second insertion hole is suitable for the pen core to extend into the shell. The pen sharpening device also includes: a pencil sharpener, which is arranged in the shell and is provided with a pencil sharpening hole, and the pencil sharpening hole corresponds to the position of the second insertion hole, so that the pencil sharpener can cut the pen core extended into the shell through the second insertion hole.

[0009] Optionally, the pencil sharpener is rotatably disposed on the housing around an axis of the second insertion hole, and the driving assembly is connected to the pencil sharpener to drive the pencil sharpener to rotate.

[0010] Optionally, the first insertion hole and / or the second insertion hole is formed as a tapered hole, and the tapered hole is adapted to a taper portion of a pencil.

[0011] Optionally, the driving assembly includes: a first rotating shaft, which is arranged on the disk body, the axis of the first rotating shaft is the same as the axis of the disk body, the first rotating shaft is rotatably arranged on the shell, and the first end of the first rotating shaft extends out of the shell; a handle, which is fixedly connected to the first end of the first rotating shaft; a first bevel gear, which is arranged on the second end of the first rotating shaft; a second rotating shaft, which is rotatably arranged in the shell, the axis of the second rotating shaft coincides with the axis of the second insertion hole, and the first end of the second rotating shaft is arranged on the pencil sharpener; a second bevel gear, which is arranged on the second end of the second rotating shaft, and the second bevel gear is meshed with the first bevel gear so that the first rotating shaft drives the second rotating shaft to rotate.

[0012] Optionally, a shielding portion is provided in the shell, the shielding portion defines a shielding space, the first bevel gear and the second bevel gear are provided in the shielding space, and the first rotating shaft and the second rotating shaft are rotatably provided in the shielding portion respectively.

[0013] Optionally, an opening is provided on one side of the shell, and the pen sharpening device further includes: a storage box, which is detachably plugged into the opening, and is suitable for collecting waste generated by grinding or cutting pen cores; and a cleaning brush, which is provided in the shell and is in contact with the first polishing surface and / or the second polishing surface.

[0014] According to the pen sharpening device of the utility model, the pen core can be sharpened by providing a rotatable disk body and an annular groove on the disk body in combination with the drive of the driving component. The special design of the annular groove enables the pen core to be formed into a flat shape during the sharpening process, which meets the specific writing needs. In addition, the structure is simple and the operation is easy, which improves the efficiency and effect of pen core sharpening.

[0015] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0017] Figure 1 It is a three-dimensional diagram of a pen sharpening device according to an embodiment of the utility model;

[0018] Figure 2is a top view of a pen sharpening device according to an embodiment of the utility model;

[0019] Figure 3 yes Figure 2 Sectional view at midline AA;

[0020] Figure 4 yes Figure 3 Sectional view at midline BB;

[0021] Figure 5 yes Figure 4 Sectional view at midline CC;

[0022] Figure 6 The utility model is a schematic structural diagram of a pencil sharpener of a pencil sharpening device according to an embodiment of the utility model.

[0023] Reference numerals:

[0024] 100. Pen sharpening device;

[0025] 10. housing; 11. first insertion hole; 12. second insertion hole; 13. shielding portion;

[0026] 20. disc body; 21. annular groove; 211. first polishing surface; 212. second polishing surface;

[0027] 30. driving assembly; 31. first rotating shaft; 32. handle; 33. first bevel gear; 34. second rotating shaft; 35. second bevel gear;

[0028] 40. Pencil sharpener; 50. Storage box; 60. Cleaning brush. DETAILED DESCRIPTION

[0029] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0030] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0031] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0032] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0033] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0034] The pen sharpening device 100 according to an embodiment of the present utility model is described in detail below with reference to the accompanying drawings.

[0035] like Figures 1 to 6 As shown, the pen sharpening device 100 according to the embodiment of the utility model includes: a shell 10, a disk body 20 and a driving assembly 30.

[0036] Specifically, a first insertion hole 11 is provided on one side of the shell 10, and the first insertion hole 11 is suitable for the pen core to extend into the shell 10. The circumferential side wall of the disk body 20 is provided with an annular groove 21 extending along its own circumference. In the radial direction of the disk body 20, the width of the annular groove 21 gradually decreases from the opening of the annular groove 21 to the bottom of the annular groove 21. The two wall surfaces of the annular groove 21 in its own width direction are configured as first polishing surfaces 211, and the disk body 20 is rotatably arranged in the shell 10 around its own axis. The annular groove 21 is adapted to the position of the first insertion hole 11 so that the first polishing surface 211 can polish the pen core. The driving assembly 30 is arranged in the shell 10, and the driving assembly 30 is connected to the disk body 20 to drive the disk body 20 to rotate.

[0037] In other words, if Figures 1 to 6 As shown, the pen sharpening device 100 according to the embodiment of the utility model mainly includes a shell 10, a disk body 20 and a driving assembly 30, wherein the shell 10 can be configured as a rectangular parallelepiped structure, a first insertion hole 11 is provided on the upper side of the shell 10, the first insertion hole 11 is connected to the internal space of the shell 10, and the diameter of the first insertion hole 11 is not less than the diameter of the pen core, so that the pen core can extend into the shell 10 from the first insertion hole 11, and an annular groove 21 extending along its own circumference is provided at the center position of the circumferential side wall of the disk body 20, the width of the opening of the annular groove 21 is not less than the diameter of the pen core, and the width of the annular groove 21 is The opening of the annular groove 21 gradually narrows to the bottom of the annular groove 21. For example, the cross-section of the annular groove 21 can be triangular or trapezoidal. The annular groove 21 has a first surface and a second surface in its own width direction (i.e., the axial direction of the disk body 20). The first surface and the second surface are both configured as a first polished surface 211. For example, when the disk body 20 is made of a rough grindstone, the first surface and the second surface are directly formed as the first polished surface 211. When the disk body 20 is made of smooth metal, the first surface and the second surface can be processed to form the first surface and the second surface into a rough first polished surface 211.

[0038] like Figures 3 to 5As shown, the disk body 20 is rotatably arranged in the housing 10 around its own axis, and the annular groove 21 is matched with the position of the first insertion hole 11, so that the pen core inserted through the first insertion hole 11 can be inserted into the annular groove 21, so that when the disk body 20 rotates, the two first grinding surfaces 211 can grind the pen core into a flat shape. The driving component 30 is arranged in the housing 10, and the driving component 30 can be connected with the disk body 20, so that the disk body 20 is driven by the driving component 30 to rotate around its own axis, so that the first grinding surface 211 grinds the pen core.

[0039] According to the pen sharpening device 100 of the embodiment of the utility model, the pen core can be sharpened by providing a rotatable disk body 20 and an annular groove 21 on the disk body 20, combined with the drive of the driving component 30. The special design of the annular groove 21 enables the pen core to be formed into a flat shape during the sharpening process, which meets the specific writing needs. In addition, the structure is simple, the operation is easy, and the efficiency and effect of sharpening the pen core are improved.

[0040] According to an embodiment of the utility model, a second grinding surface 212 is provided at the bottom of the annular groove 21 , and the second grinding surface 212 is suitable for grinding the end surface of the pen core.

[0041] That is to say, Figure 3 and Figure 4 As shown, the cross-section of the annular groove 21 can be roughly formed into a trapezoid, the bottom of the annular groove 21 is located between the two first polishing surfaces 211, and the bottom of the annular groove 21 is formed as a second polishing surface 212. For example, when the disk body 20 is made of a rough grindstone, the bottom of the annular groove 21 is directly formed as the second polishing surface 212. When the disk body 20 is made of smooth metal, the bottom of the annular groove 21 can be processed so that the bottom of the annular groove 21 is formed as a rough second polishing surface 212.

[0042] In this embodiment, when the disk 20 rotates, the end of the pen core can be polished through the second polishing surface 212, which is conducive to polishing the end of the pen core to a smoother end surface. The operation is simple and can improve the efficiency and effect of polishing the pen core.

[0043] Specifically, the cross section of the annular groove 21 is an isosceles triangle or an isosceles trapezoid. The isosceles triangle or isosceles trapezoid design of the annular groove 21 makes the grinding process more uniform, which is conducive to grinding the pen core to a desired flat shape.

[0044] According to an embodiment of the present invention, there is a distance between the axis of the first insertion hole 11 and the axis of the disk body 20 .

[0045] In other words, Figure 5As shown, in order to ensure that the end of the pen core has a certain slope, a distance can be provided between the axis of the first insertion hole 11 and the axis of the disk body 20 during design, so that the end of the pen core is not a symmetrical structure in the width direction of the flat pen core, but a structure inclined toward one side, so that the end face of the pen core is roughly formed into an inclined surface, which is convenient for users to write.

[0046] It should be noted that the distance between the axis of the first insertion hole 11 and the axis of the disk body 20 can be adjusted according to parameters such as the diameter of the disk body 20 and the required inclination of the end of the refill, which will not be described in detail in this embodiment.

[0047] Optionally, the distance between the axis of the first insertion hole 11 and the axis of the disk body 20 ranges from 2mm to 2.5mm, the diameter of the disk body 20 is 35mm to 40mm, 38mm in this embodiment, the depth of the annular groove 21 is 4.5mm to 4mm, and the opening width of the annular groove 21 is 3mm.

[0048] In some specific embodiments of the present invention, a second insertion hole 12 is provided on one side of the shell 10, and the second insertion hole 12 is suitable for the pen core to extend into the shell 10. The pen sharpening device 100 also includes: a pencil sharpener 40, which is arranged in the shell 10, and the pencil sharpener 40 is provided with a sharpening hole, and the sharpening hole corresponds to the position of the second insertion hole 12, so that the pencil sharpener 40 can cut the pen core extended into the shell 10 through the second insertion hole 12.

[0049] Specifically, Figures 1 to 6 As shown, a second insertion hole 12 is provided on the upper side of the shell 10, and the second insertion hole 12 is connected to the internal space of the shell 10, and the diameter of the second insertion hole 12 is not less than the diameter of the pen core, so that the pen core can extend into the shell 10 from the second insertion hole 12. A pencil sharpener 40 corresponding to the position of the second insertion hole 12 is also provided in the shell 10, and the pencil sharpener 40 is configured to be suitable for inserting the pen core, so that the inserted pen core can be cut into a cone shape by the pencil sharpener 40, thereby realizing multiple processing of the pen core and meeting different usage requirements.

[0050] According to an embodiment of the present invention, the pencil sharpener 40 is rotatably disposed on the housing 10 around the axis of the second insertion hole 12 , and the driving assembly 30 is connected to the pencil sharpener 40 to drive the pencil sharpener 40 to rotate.

[0051] That is to say, in order to improve the cutting efficiency of the pencil core, the pencil sharpener 40 can be rotatably arranged on the housing 10 around the axis of the second insertion hole 12, and the driving assembly 30 is connected to the pencil sharpener 40, so that the pencil sharpener 40 can be driven by the driving assembly 30, which is easy to operate.

[0052] In some other examples of the present invention, the pencil sharpener 40 is fixedly connected to the housing 10, and the pencil lead can be cut by rotating the pencil during use, which has a simple structure and is easy to manufacture.

[0053] In some specific embodiments of the present invention, the first insertion hole 11 and / or the second insertion hole 12 is formed as a tapered hole, and the tapered hole is adapted to the taper portion of a pencil.

[0054] Specifically, Figure 3 and Figure 4 As shown, the first insertion hole 11 and the second insertion hole 12 can be formed as conical holes, which are adapted to the taper portion of the pencil. On the one hand, the conical hole can play a guiding role when inserting the pencil lead. On the other hand, after the pencil lead is inserted, the conical hole can cooperate with the taper portion (i.e., the part of the pencil close to the writing end) to limit the pencil, which is convenient to use.

[0055] According to an embodiment of the present invention, the driving assembly 30 includes: a first rotating shaft 31 , a handle 32 , a first bevel gear 33 , a second rotating shaft 34 and a second bevel gear 35 .

[0056] Specifically, the first rotating shaft 31 is provided on the disk body 20, the axis of the first rotating shaft 31 is the same as the axis of the disk body 20, the first rotating shaft 31 is rotatably provided on the shell body 10, the first end of the first rotating shaft 31 extends out of the shell body 10, the handle 32 is fixedly connected to the first end of the first rotating shaft 31, the first bevel gear 33 is provided at the second end of the first rotating shaft 31, the second rotating shaft 34 is rotatably provided in the shell body 10, the axis of the second rotating shaft 34 coincides with the axis of the second insertion hole 12, the first end of the second rotating shaft 34 is provided on the pencil sharpener 40, the second bevel gear 35 is provided at the second end of the second rotating shaft 34, and the second bevel gear 35 is meshed with the first bevel gear 33, so that the first rotating shaft 31 drives the second rotating shaft 34 to rotate.

[0057] In other words, if Figure 3 and Figure 4 As shown, the driving assembly 30 according to the embodiment of the utility model mainly includes a first rotating shaft 31 and a handle 32. The disk body 20 is rotatably disposed on the shell 10 through the first rotating shaft 31. Specifically, the first rotating shaft 31 passes through the disk body 20 and the two are fixedly connected together by means of clamping or bonding. The first rotating shaft 31 is rotatably disposed on the shell 10, and the first end of the first rotating shaft 31 extends out of the shell 10 and is fixedly connected to the handle 32. The user can drive the first rotating shaft 31 to rotate by turning the handle 32, thereby driving the disk body 20 to rotate. The structure is simple and easy to operate.

[0058] Furthermore, if Figure 3 and Figure 4As shown, the driving assembly 30 also includes a first bevel gear 33, a second rotating shaft 34 and a second bevel gear 35. The first bevel gear 33 is fixedly connected to the second end of the first rotating shaft 31, the axis of the second rotating shaft 34 coincides with the axis of the second insertion hole 12, the first end of the second rotating shaft 34 is fixedly connected to the pencil sharpener 40, the second end of the second rotating shaft 34 is fixedly connected to the second bevel gear 35, and the second bevel gear 35 is meshed with the first bevel gear 33, so that the rotational force of the first rotating shaft 31 can be transmitted to the second rotating shaft 34, and then the pencil sharpener 40 can be driven to rotate by the handle 32. The structure is simple and easy to operate.

[0059] In some specific embodiments of the utility model, a shielding portion 13 is provided in the shell 10, the shielding portion 13 defines a shielding space, the first bevel gear 33 and the second bevel gear 35 are arranged in the shielding space, and the first rotating shaft 31 and the second rotating shaft 34 are rotatably arranged in the shielding portion 13 respectively.

[0060] That is to say, Figure 3 and Figure 4 As shown, in order to prevent the waste generated by cutting and grinding the pen core from affecting the transmission of the first bevel gear 33 and the second bevel gear 35, a shielding portion 13 can be provided in the housing 10, and the first rotating shaft 31 and the second rotating shaft 34 can be rotatably provided on the shielding portion 13. The shielding portion 13 defines a shielding space suitable for installing the first bevel gear 33 and the second bevel gear 35. The first bevel gear 33 and the second bevel gear 35 can both be located in the shielding space, thereby effectively preventing waste from falling on the first bevel gear 33 and the second bevel gear 35.

[0061] Furthermore, the shell 10 includes an upper shell and a lower shell, which can be fixed together by screws, the inner wall surface of the upper shell is provided with an upper hemispherical shell, and the inner wall surface of the lower shell is provided with a lower hemispherical shell, and the upper hemispherical shell and the lower hemispherical shell are buckled together to form a shielding portion 13.

[0062] According to one embodiment of the utility model, an opening is provided on one side of the shell 10, and the pen sharpening device 100 further includes: a storage box 50 and a cleaning brush 60, the storage box 50 is detachably plugged into the opening, the storage box 50 is suitable for collecting waste generated by grinding or cutting the pen core, the cleaning brush 60 is arranged in the shell 10, and the cleaning brush 60 is in contact with the first grinding surface 211 and / or the second grinding surface 212.

[0063] Specifically, Figures 3 to 5 As shown, the vertical side wall of the shell 10 is provided with an opening, and a storage box 50 is detachably inserted into the opening. The storage box 50 is open to one side of the tray body 20 and the pencil sharpener 40, so that waste generated by grinding and cutting the pencil lead can be collected. The structure is simple and convenient for users to use.

[0064] Furthermore, a cleaning brush 60 is inserted into the shell 10, and the cleaning brush 60 extends into the annular groove 21, and the cleaning brush 60 is in contact with the first polishing surface 211 and the second polishing surface 212, so that when the disk body 20 rotates, the cleaning brush 60 can clean the first polishing surface 211 and the second polishing surface 212, thereby preventing waste from adhering to the first polishing surface 211 and the second polishing surface 212, and ensuring the polishing effect.

[0065] When the pencil sharpening device 100 according to the embodiment of the utility model is used, the end of the pencil core is inserted into the first insertion hole 11, and then the pencil is pressed downward and the handle 32 is turned. The handle 32 can drive the disk body 20 to rotate, thereby realizing the grinding of the pencil core, and the end of the pencil core can be ground into a flat shape; or, the end of the pencil core is inserted into the second insertion hole 12, and then the pencil is pressed downward and the handle 32 is turned. The handle 32 can drive the disk body 20 to rotate, thereby realizing the cutting of the pencil core, and the end of the pencil core can be cut into a cone.

[0066] In summary, according to the pen sharpening device 100 of the embodiment of the utility model, the pen core can be sharpened by providing a rotatable disk body 20 and an annular groove 21 on the disk body 20, combined with the drive of the driving component 30. The special design of the annular groove 21 enables the pen core to be formed into a flat shape during the grinding process, which meets the specific writing needs. In addition, the structure is simple, the operation is easy, and the efficiency and effect of pen core grinding are improved.

[0067] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A pen sharpening device, characterized in that: include: A housing (10), wherein a first insertion hole (11) is provided on one side of the housing (10), and the first insertion hole (11) is suitable for the pen core to extend into the housing (10); A disc body (20), wherein the circumferential side wall of the disc body (20) is provided with an annular groove (21) extending along the circumference thereof, wherein in the radial direction of the disc body (20), the width of the annular groove (21) gradually decreases from the opening of the annular groove (21) to the bottom of the annular groove (21), and the two wall surfaces of the annular groove (21) in the width direction thereof are configured as first polishing surfaces (211), and, The disc body (20) is rotatably arranged around its own axis in the housing (10), and the annular groove (21) is matched with the position of the first insertion hole (11) so that the first grinding surface (211) can grind the pen core; A driving assembly (30) is disposed on the housing (10), and the driving assembly (30) is connected to the disk body (20) to drive the disk body (20) to rotate.

2. The pen sharpening device according to claim 1, characterized in that: A second grinding surface (212) is provided at the bottom of the annular groove (21), and the second grinding surface (212) is suitable for grinding the end surface of the pen core.

3. The pen sharpening device according to claim 1, characterized in that: The cross section of the annular groove (21) is an isosceles triangle or an isosceles trapezoid.

4. The pen sharpening device according to claim 1, characterized in that: There is a distance between the axis of the first insertion hole (11) and the axis of the disk body (20).

5. The pen sharpening device according to claim 1, characterized in that: A second insertion hole (12) is provided on one side of the housing (10), and the second insertion hole (12) is suitable for the pen core to extend into the housing (10). The pen sharpening device further comprises: A pencil sharpener (40) is arranged in the housing (10), and the pencil sharpener (40) is provided with a pencil sharpening hole, wherein the position of the pencil sharpening hole corresponds to the position of the second insertion hole (12), so that the pencil sharpener (40) can cut the pencil core extending into the housing (10) through the second insertion hole (12).

6. The pen sharpening device according to claim 5, characterized in that: The pencil sharpener (40) is rotatably arranged on the housing (10) around the axis of the second insertion hole (12), and the driving assembly (30) is connected to the pencil sharpener (40) to drive the pencil sharpener (40) to rotate.

7. The pen sharpening device according to claim 5, characterized in that: The first insertion hole (11) and / or the second insertion hole (12) are formed as tapered holes, and the tapered holes are adapted to the taper portion of a pencil.

8. The pen sharpening device according to claim 6, characterized in that: The driving assembly (30) comprises: a first rotating shaft (31), the first rotating shaft (31) being disposed on the disk body (20), the axis of the first rotating shaft (31) being the same as the axis of the disk body (20), the first rotating shaft (31) being rotatably disposed on the housing (10), and a first end of the first rotating shaft (31) extending out of the housing (10); a handle (32), the handle (32) being fixedly connected to the first end of the first rotating shaft (31); A first bevel gear (33), wherein the first bevel gear (33) is arranged at the second end of the first rotating shaft (31); a second rotating shaft (34), the second rotating shaft (34) being rotatably disposed in the housing (10), the axis of the second rotating shaft (34) being coincident with the axis of the second insertion hole (12), and the first end of the second rotating shaft (34) being disposed on the pencil sharpener (40); A second bevel gear (35), the second bevel gear (35) is arranged at the second end of the second rotating shaft (34), and the second bevel gear (35) is meshed with the first bevel gear (33), so that the first rotating shaft (31) drives the second rotating shaft (34) to rotate.

9. The pen sharpening device according to claim 8, characterized in that: A shielding portion (13) is provided in the housing (10), the shielding portion (13) defines a shielding space, the first bevel gear (33) and the second bevel gear (35) are provided in the shielding space, and the first rotating shaft (31) and the second rotating shaft (34) are rotatably provided in the shielding portion (13), respectively.

10. The pen sharpening device according to claim 2, characterized in that: One side of the housing (10) is provided with an opening, and the pen sharpening device further comprises: A storage box (50), the storage box (50) being detachably plugged into the opening, the storage box (50) being suitable for collecting waste materials generated by grinding or cutting the pen core; A cleaning brush (60), wherein the cleaning brush (60) is disposed in the housing (10), and the cleaning brush (60) is in contact with the first polishing surface (211) and / or the second polishing surface (212).

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