Pencil feeding mechanism and automatic pencil sharpener thereof

Abstract

The utility model discloses a pencil feeding mechanism and an automatic pencil sharpener thereof. The pencil feeding mechanism comprises a fixing piece. The two pen clamping assemblies are oppositely arranged in the radial direction, so that a pen clamping gap is defined between the two pen clamping assemblies; and the adjusting piece is elastically connected with the fixing piece and the at least one pencil clamping assembly, so that the two pencil clamping assemblies can move in the same direction or opposite directions in the arrangement direction, the width of the pencil clamping gap is adjusted, and the pencil feeding mechanism is suitable for clamping pencils with different diameters.

Description

Technical Field

[0001] The present invention relates to the field of automatic pencil sharpeners, in particular to a pen feeding mechanism and an automatic pencil sharpener thereof. Background Art

[0002] The automatic pencil sharpener is a new type of stationery. When a pencil is inserted into the automatic pencil sharpener, the motor starts to work, the blade holder rotates, and the pencil starts to sharpen automatically, replacing the traditional hand-cranking method to rotate the blade holder to sharpen the pencil.

[0003] However, there are many different pencils on the market, and the diameters of the pencils are also different. The current pencil feeding mechanism is difficult to adapt to a wide variety of pencils. If the diameter of the pencil is large, it is easy to make it difficult or impossible to insert the pencil into the pencil feeding mechanism. Summary of the Invention

[0004] An object of the present invention is to provide a pencil feeding mechanism suitable for holding pencils of different diameters.

[0005] Another object of the present invention is to provide an automatic pencil sharpener having the above-mentioned pencil feeding mechanism so that the automatic pencil sharpener is suitable for cutting pencils of different diameters.

[0006] To achieve at least one of the above objectives, the present invention adopts a technical solution: a pen feeding mechanism comprising: a fixing member; a pair of pen clamping assemblies, the two pen clamping assemblies being arranged radially opposite to each other to define a pen clamping gap between the two pen clamping assemblies; and an adjusting member elastically connecting the fixing member and at least one pen clamping assembly to enable the two pen clamping assemblies to move toward or away from each other along an arrangement direction to adjust the width of the pen clamping gap.

[0007] Preferably, the pen clamping assembly includes a pillar and a roller, the pillar is mounted on the fixing member, and the roller is sleeved on the pillar so that the roller can rotate, and the pen clamping gap is formed between the rollers of the two pen clamping assemblies; the adjusting member elastically connects the fixing member and the pillar of at least one pen clamping assembly so that the pillars of the two pen clamping assemblies are suitable for moving toward or away from each other along the arrangement direction to adjust the width of the pen clamping gap.

[0008] Preferably, the adjusting member includes a first adjusting member and a second adjusting member, wherein one end of the pillar of one pen clamp assembly is connected to the first adjusting member, and the other end is supported by the fixing member, and one end of the pillar of the other pen clamp assembly is connected to the second adjusting member, and the other end is supported by the fixing member, and the first adjusting member and the second adjusting member are arranged on opposite sides along the axial direction of the pen clamp assembly.

[0009] As a preferred embodiment, the fixing member has a pen inlet and a accommodating portion, the pen inlet is suitable for allowing a pencil to pass through, the accommodating portion is located on the peripheral side of the pen inlet, the accommodating portion has a communicating accommodating groove and a slide groove, the accommodating groove is capable of accommodating an adjusting member, the slide groove is opened on a side of the accommodating portion facing the pen inlet, the slide groove extends along the arrangement direction of the pen clamp assembly, the pillar is capable of extending from the slide groove into the accommodating groove, and the adjusting member is capable of elastically connecting the pillar and the accommodating portion so that the end of the pillar accommodated in the accommodating groove is capable of moving along the slide groove.

[0010] As a preferred embodiment, the fixing member has a supporting portion, which is located on the circumferential side of the pen inlet, and the supporting portion and the accommodating portion are arranged opposite to each other along the axial direction of the pen clamping assembly. The supporting portion is capable of accommodating and supporting one end of the pillar, and the accommodating portion is capable of accommodating and supporting the other end of the pillar, so that the pen clamping assembly is erected above the pen inlet, and under the condition that one end of the pillar accommodated in the accommodating groove moves along the sliding groove, the pillar is capable of rotating around the end accommodated in the supporting portion to adjust the width of the pen clamping gap.

[0011] As a preference, the upper part of the receiving groove and the upper part of the sliding groove are both connected to the outside world, and the receiving groove pen feeding mechanism also includes a cover plate, which is arranged above the receiving groove and the sliding groove to shield the adjusting member.

[0012] Preferably, the adjusting member is a compression spring, the extension direction of which is consistent with the arrangement direction of the pen clamping assembly, one end of the compression spring abuts against the pen clamping assembly, and the other end of the compression spring abuts against the fixing member, so that the two pen clamping assemblies are suitable for moving toward or away from each other along the arrangement direction to adjust the width of the pen clamping gap.

[0013] As a preferred embodiment, along the axial direction of the roller, the roller has opposite pen clamping ends and enlarged ends, and the roller has an outer circumferential surface, and the radial dimension of the outer circumferential surface gradually increases from the pen clamping end to the enlarged end. Under the condition that the two pen clamping assemblies are arranged on the fixed member, the pen clamping ends and the enlarged ends of the two rollers are arranged on opposite sides of the pen clamping assemblies along the axial direction to form the pen clamping gap between the outer circumferential surfaces of the two rollers.

[0014] As a preferred embodiment, the pen clamp assembly further includes a reset member, which is sleeved on the pillar, and the reset member and the roller are arranged axially so that the reset member is elastically clamped axially between the pen clamping end of the roller and the fixing member, so that the rollers of the two pen clamp assemblies are suitable for moving toward or away from each other along the axial direction to adjust the width of the pen clamping gap.

[0015] To achieve at least one of the above objectives, the present invention adopts a technical solution: an automatic pencil sharpener, comprising: a pencil feed mechanism as described above; a blade holder, the blade holder being located below the pencil feed mechanism and capable of cutting pencils; and a drive assembly connected to the blade holder and capable of driving the blade holder to rotate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The adjusting piece enables the two pencil clamping assemblies to move toward or away from each other along the arrangement direction, thereby adjusting the width of the pencil clamping gap so that the pencil feeding mechanism is suitable for clamping pencils of different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural diagram of the pen feeding mechanism according to some embodiments of the present application.

[0019] Figure 2 It is a three-dimensional structural diagram of the pen feeding mechanism according to some embodiments of the present application.

[0020] Figure 3 This is a three-dimensional structural diagram of the pen feeding mechanism in a state of clamping a thin pencil according to some embodiments of the present application.

[0021] Figure 4 This is a three-dimensional structural diagram of the pen feeding mechanism in a state of clamping a thick pencil according to some embodiments of the present application.

[0022] Figure 5 This is a three-dimensional structural diagram of the pen feeding mechanism in some embodiments of the present application when a cover is provided.

[0023] Figure 6 It is a three-dimensional structural diagram of a roller according to some embodiments of the present application.

[0024] Figure 7 A three-dimensional structural diagram of the pencil feeding mechanism according to some embodiments of the present application in the pencil cutting state.

[0025] Figure 8 1 is a diagram of the internal structure of an automatic pencil sharpener according to some embodiments of the present application.

[0026] In the figure: 1. Pen feeding mechanism; 10. Fixing member; 11. Pen inlet; 12. Accommodating portion; 121. Accommodating groove; 122. Slide groove; 13. Support portion; 20. Cover plate; 30. Pen clamping assembly; 31. Support column; 32. Roller; 321. Pen clamping end; 322. Enlarged end; 323. Outer peripheral surface; 33. Resetting member; 40. Pen clamping gap; 50. Adjusting member; 51. First adjusting member; 52. Second adjusting member; 2. Automatic pencil sharpener; 61. Blade holder; 62. Driving assembly. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] In the description of the present invention, it should be noted that, for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like, indicating directions and positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present invention.

[0029] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0030] The terms "comprises" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, product or apparatus.

[0031] A pen feeding mechanism 1, such as Figure 1-5 As shown, the present invention comprises: a fixing member 10; a pair of pen-clamping assemblies 30, the two pen-clamping assemblies 30 being arranged radially opposite each other to define a pen-clamping gap 40 between the two pen-clamping assemblies 30; and an adjusting member 50, the adjusting member 50 elastically connecting the fixing member 10 and at least one pen-clamping assembly 30 to enable the two pen-clamping assemblies 30 to move toward or away from each other along the arrangement direction to adjust the width of the pen-clamping gap 40. It should be understood that the adjusting member 50 enables the two pen-clamping assemblies 30 to move toward or away from each other along the arrangement direction, thereby adjusting the width of the pen-clamping gap 40, so that the pen-feeding mechanism 1 is suitable for clamping pencils of different diameters.

[0032] Specifically, the adjustment member 50 provides a force that causes the two pencil-clamping assemblies 30 to move toward each other along the arrangement direction. When an external force is applied, such as when a thicker pencil is inserted between the two pencil-clamping assemblies 30, the force of the adjustment member 50 is overcome, causing the two pencil-clamping assemblies 30 to move away from each other along the arrangement direction, thereby increasing the width of the pencil-clamping gap 40. Simultaneously, the force of the adjustment member 50 causes the two pencil-clamping assemblies 30 to tend to move toward each other along the arrangement direction, thereby reliably clamping the pencil between the two pencil-clamping assemblies 30. Furthermore, when the external force is removed, such as when a thicker pencil is pulled out, the force of the adjustment member 50 causes the two pencil-clamping assemblies 30 to move toward each other along the arrangement direction until they return to their original position, thereby reducing the width of the pencil-clamping gap 40 to accommodate thinner pencils.

[0033] In some embodiments, as Figure 1-5 As shown, the pen clamp assembly 30 includes a pillar 31 and a roller 32. The pillar 31 is mounted on the fixing member 10, and the roller 32 is sleeved on the pillar 31 so that the roller 32 can rotate. A pen clamping gap 40 is formed between the rollers 32 of the two pen clamping assemblies 30; the adjusting member 50 elastically connects the fixing member 10 and the pillar 31 of at least one pen clamping assembly 30, so that the pillars 31 of the two pen clamping assemblies 30 are suitable for moving toward or away from each other along the arrangement direction to adjust the width of the pen clamping gap 40.

[0034] In other words, the adjusting member 50 enables the pillars 31 to move toward or away from each other along the arrangement direction, thereby driving the rollers 32 mounted on the pillars 31 to move toward or away from each other along the arrangement direction, thereby adjusting the width of the pen clamping gap 40. It should be understood that, compared to a case where the adjusting member 50 is directly connected to the rollers 32, in this embodiment, the adjusting member 50 acts on the pillars 31 to indirectly adjust the distance between the rollers 32 of the two pen clamping assemblies 30. This helps prevent the adjusting member 50 from directly connecting with or contacting the rollers 32 and potentially damaging the rollers 32. Furthermore, the adjusting member 50 is positioned away from the rollers 32, which helps prevent interference between the adjusting member 50 and the pencil, thereby reducing the effect of the adjusting member 50 on the pen feeding and retracting operations.

[0035] In some embodiments, as Figure 1 As shown, the adjusting member 50 includes a first adjusting member 51 and a second adjusting member 52, wherein one end of the support 31 of one pen clamp assembly 30 is connected to the first adjusting member 51 and the other end is supported on the fixing member 10, and one end of the support 31 of the other pen clamp assembly 30 is connected to the second adjusting member 52 and the other end is supported on the fixing member 10, and the first adjusting member 51 and the second adjusting member 52 are arranged on opposite sides along the axial direction of the pen clamp assembly 30.

[0036] It should be understandable that Figure 3 and Figure 4As shown, the pillar 31 of the pen clamp assembly 30 is connected to one end of the first adjusting member 51 or the second adjusting member 52, so that the pillar 31 is suitable for moving toward or away from the pillar 31 of the other pen clamp assembly 30 along the arrangement direction of the pen clamp assemblies 30 under the elastic action of the first adjusting member 51 or the second adjusting member 52. Furthermore, the pillar 31 of the pen clamp assembly 30 is able to rotate around the end where the adjusting member 50 is not provided.

[0037] Specifically, such as Figure 4 As shown, under the condition of external force, for example, when a thicker pencil is inserted between the two pencil clamp assemblies 30, the force of the first adjusting member 51 and the second adjusting member 52 is overcome, and then the end of the support 31 of the pencil clamp assemblies 30 connected to the first adjusting member 51 or the second adjusting member 52 is moved. Since the first adjusting member 51 and the second adjusting member 52 are arranged on opposite sides of the axial direction of the pencil clamp assemblies 30, the two pencil clamp assemblies 30 are Figure 4 The two pencil clamping assemblies 30 are rotated clockwise from the perspective shown, thereby increasing the width of the pencil clamping gap 40 and keeping the pillars 31 of the two pencil clamping assemblies 30 parallel or nearly parallel, which is conducive to the pencil clamping assemblies 30 reliably holding the pencil. Furthermore, when the external force is removed, for example, when a thicker pencil is pulled out, the force of the adjusting member 50 can make the two pencil clamping assemblies 30 remain parallel. Figure 3 The device is rotated counterclockwise from the perspective shown, and the width of the pencil clamping gap 40 is reduced to be suitable for clamping thinner pencils.

[0038] In other embodiments, the adjustment member 50 may be disposed at both ends of the support column 31 of only one of the pen-clip assemblies 30, so that the pen-clip assembly 30 connected to the adjustment member 50 can be moved toward or away from the other pen-clip assembly 30 along the arrangement direction. In other embodiments, the adjustment member 50 may be disposed at both ends of the support column 31 of both pen-clip assemblies 30. This application does not impose any specific limitations on this.

[0039] In some embodiments, as Figure 1 and Figure 2 As shown, the fixing member 10 has a pen inlet 11 and a receiving portion 12. The pen inlet 11 is suitable for passing a pencil so that the pencil tip enters the automatic pencil sharpener 2 and is cut by the knife holder 61. The receiving portion 12 is located on the peripheral side of the pen inlet 11. The receiving portion 12 has a communicating receiving groove 121 and a sliding groove 122. The receiving groove 121 is capable of accommodating the adjusting member 50. The sliding groove 122 is provided on the side of the receiving portion 12 facing the pen inlet 11. The sliding groove 122 extends along the arrangement direction of the pencil clamp assembly 30. The support 31 is capable of extending from the sliding groove 122 into the receiving groove 121. The adjusting member 50 is adapted to elastically connect the support 31 and the receiving portion 12 so that the end of the support 31 accommodated in the receiving groove 121 is adapted to move along the sliding groove 122.

[0040] It should be understood that the receiving groove 121 can accommodate both the adjustment member 50 and the end of the support 31, thereby simplifying and compacting the structure of the pen feeding mechanism 1, thereby reducing the size of the pen feeding mechanism 1 and facilitating manufacturing, thereby reducing production costs. The sliding groove 122 can limit the movement trajectory of the end of the support 31 connected to the adjustment member 50, thereby improving the reliability and repeatability of the movement of the support 31.

[0041] In some embodiments, as Figure 1 and Figure 2 As shown, the fixing member 10 includes a support portion 13 located around the pen inlet 11. The support portion 13 and the receiving portion 12 are arranged opposite each other along the axial direction of the pen clamp assembly 30. The support portion 13 receives and supports one end of a support 31, while the receiving portion 12 receives and supports the other end of the support 31. This allows the pen clamp assembly 30 to be mounted above the pen inlet 11. When one end of the support 31 is received in the receiving groove 121 and moves along the slide groove 122, the support 31 can rotate about the end received in the support portion 13 to adjust the width of the pen clamping gap 40. It should be understood that the support portion 13 can limit one end of the support 31 of the pen clamp assembly 30, thereby reducing irregular movement of the pen clamp assembly 30, improving the stability of the width of the pen clamping gap 40 between the two pen clamp assemblies 30, and thereby improving the reliability of the pencil feeding mechanism 1 in holding a pencil.

[0042] In other embodiments, the adjusting members 50 are respectively disposed at both ends of the pillars 31 of the two pen clamping assemblies 30, and the fixing member 10 has four accommodating portions 12, and the accommodating portions 12 are arranged opposite to each other along the axial direction of the pen clamping assembly 30, so as to respectively accommodate the ends of the pillars 31 of the pen clamping assembly 30 and the adjusting members 50. This application does not impose any specific restrictions on this.

[0043] In some embodiments, as Figure 2 As shown, the upper portion of the receiving groove 121 and the upper portion of the sliding groove 122 are both connected to the outside world, so as to facilitate the placement of the support 31 and the adjusting member 50 into the receiving groove 121, thereby improving the installation efficiency. Figure 5 As shown, the receiving groove 121 and the pen feeding mechanism 1 further include a cover plate 20, which is arranged above the receiving groove 121 and the slide groove 122 to shield the adjusting member 50, thereby preventing the adjusting member 50 from escaping from the receiving groove 121 and preventing the end of the support 31 from escaping from the slide groove 122, thereby improving the reliability of the pen feeding mechanism 1.

[0044] In some embodiments, as Figure 1As shown, the adjustment member 50 is a compression spring extending in the same direction as the arrangement direction of the pen clamp assemblies 30. One end of the compression spring abuts the pen clamp assemblies 30, and the other end abuts the fixing member 10, allowing the two pen clamp assemblies 30 to move toward or away from each other along the arrangement direction to adjust the width of the pen clamp gap 40. In other words, the elastic force of the compression spring provides a force for the pen clamp assemblies 30 to move toward each other along the arrangement direction, thereby adjusting the width of the pen clamp gap 40.

[0045] In a specific embodiment, Figure 1 and Figure 2 As shown, the receiving groove 121 extends along the arrangement direction of the pen clamp assembly 30, and the compression spring is accommodated in the receiving groove 121 of the accommodating portion 12. One end of the compression spring abuts against the support 31 of the pen clamp assembly 30, and the other end of the compression spring abuts against the groove wall of the receiving groove 121, so that the direction of the force of the compression spring is parallel to or nearly parallel to the arrangement direction of the pen clamp assembly 30, thereby providing the pen clamp assembly 30 with a force to move toward each other along the arrangement direction.

[0046] It is worth mentioning that the adjustment member 50 can also be implemented as a tension spring, a torsion spring, or an elastic material such as rubber, and this application does not impose any specific restrictions on this.

[0047] In some embodiments, as Figure 6 As shown, along the axial direction of the roller 32, the roller 32 has opposite pen-clamping ends 321 and an enlarged end 322, and the roller 32 has an outer circumferential surface 323. The radial dimension of the outer circumferential surface 323 gradually increases from the pen-clamping end 321 to the enlarged end 322. When the two pen-clamping assemblies 30 are arranged on the fixing member 10, the pen-clamping ends 321 and the enlarged ends 322 of the two rollers 32 are arranged on opposite sides of the pen-clamping assemblies 30 along the axial direction to form a pen-clamping gap 40 between the outer circumferential surfaces 323 of the two rollers 32.

[0048] It should be understandable that Figure 3 and Figure 4 As shown, compared to rollers 32 of equal diameter, in this embodiment, the pen-clamping ends 321 and the enlarged ends 322 of the two rollers 32 are arranged on opposite sides of the axial direction of the pen-clamping assembly 30. On the basis of the two rollers 32 being able to provide a clamping force to the pencil along the arrangement direction of the pen-clamping assembly 30, the two rollers 32 are also able to provide a force acting in opposite directions along the axial direction of the pen-clamping assembly 30 to the pencil, which is beneficial for keeping the pencil at the center position of the pen inlet 11, thereby making the axis of the pencil, the axis of the pen inlet 11 and the rotation axis of the knife holder 61 more coincident, which is beneficial for making the cutting force on the pencil more uniform.

[0049] In some embodiments, as Figure 5 and Figure 7As shown, the pen clamp assembly 30 further includes a reset member 33, which is sleeved on the support 31. The reset member 33 and the roller 32 are arranged axially so that the reset member 33 is elastically clamped axially between the pen clamping end 321 of the roller 32 and the fixing member 10, so that the rollers 32 of the two pen clamp assemblies 30 are suitable for axially moving toward or away from each other to further adjust the width of the pen clamping gap 40.

[0050] It should be understood that the reset member 33 provides a force that causes the rollers 32 of the two pen-clamping assemblies 30 to move axially away from each other. When subjected to an external force, such as when a pencil rotates with the blade holder 61, the axial friction between the pencil and the rollers 32 overcomes the force of the reset member 33, causing the rollers 32 of the two pen-clamping assemblies 30 to move axially toward each other. Consequently, the enlarged ends 322 of the two rollers 32 gradually approach each other, thereby reducing the width of the pen-clamping gap 40 and allowing the pencil-clamping assemblies 30 to clamp the pencil tightly, preventing it from continuing to rotate with the blade holder 61. This helps avoid the need for the user to manually grip the pencil to prevent it from rotating with the blade holder 61, thereby improving the ease of use of the automatic pencil sharpener 2. Furthermore, when the external force is removed, such as when the blade holder 61 stops rotating, the force of the adjustment member 50 causes the rollers 32 of the two pen-clamping assemblies 30 to move away from each other until they are reset, thereby increasing the width of the pen-clamping gap 40 and facilitating easier pencil removal.

[0051] An automatic pencil sharpener 2, such as Figure 8 As shown, the automatic pencil sharpener 2 comprises: the aforementioned pencil feed mechanism 1; a blade holder 61, located below the pencil feed mechanism 1 and capable of cutting pencils; and a drive assembly 62, connected to the blade holder 61 and capable of driving the blade holder 61 to rotate. It should be understood that, via the adjustment member 50, the two pencil clamping assemblies 30 are adapted to move toward or away from each other along the arrangement direction, thereby adjusting the width of the pencil clamping gap 40, so that the pencil feed mechanism 1 is suitable for clamping pencils of different diameters. Furthermore, via the reset member 33, the rollers 32 of the two pencil clamping assemblies 30 are adapted to move toward or away from each other along the axial direction, thereby fine-tuning the width of the pencil clamping gap 40 during pencil sharpening, further reducing the risk of the pencil rotating with the blade holder 61 and improving the reliability of the automatic pencil sharpener 2.

[0052] The above describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and description merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A pen feeding mechanism, characterized in that: include: fixings; a pair of pen-clamping assemblies, wherein the two pen-clamping assemblies are arranged radially opposite to each other to define a pen-clamping gap between the two pen-clamping assemblies; An adjusting member is elastically connected to the fixing member and at least one of the pen clamping assemblies, so that the two pen clamping assemblies are suitable for moving toward or away from each other along the arrangement direction to adjust the width of the pen clamping gap.

2. The pen feeding mechanism according to claim 1, characterized in that: The pen clamp assembly includes a support and a roller, wherein the support is mounted on the fixing member, and the roller is sleeved on the support to enable the roller to rotate, and the pen clamp gap is formed between the rollers of the two pen clamp assemblies; The adjusting member is elastically connected to the fixing member and the pillar of at least one pen clamping assembly, so that the pillars of the two pen clamping assemblies are suitable for moving toward or away from each other along the arrangement direction to adjust the width of the pen clamping gap.

3. The pen feeding mechanism according to claim 2, characterized in that: The adjusting member includes a first adjusting member and a second adjusting member, wherein one end of the pillar of one pen clamp assembly is connected to the first adjusting member, and the other end is supported by the fixing member, and one end of the pillar of the other pen clamp assembly is connected to the second adjusting member, and the other end is supported by the fixing member, and the first adjusting member and the second adjusting member are arranged on opposite sides along the axial direction of the pen clamp assembly.

4. The pen feeding mechanism according to claim 2, characterized in that: The fixing member has a pen inlet and a accommodating portion, the pen inlet is suitable for allowing a pencil to pass through, the accommodating portion is located on the peripheral side of the pen inlet, the accommodating portion has a communicating accommodating groove and a sliding groove, the accommodating groove is capable of accommodating an adjusting member, the sliding groove is opened on a side of the accommodating portion facing the pen inlet, the sliding groove extends along the arrangement direction of the pencil clamp assembly, the pillar is capable of extending from the sliding groove into the accommodating groove, the adjusting member is capable of elastically connecting the pillar and the accommodating portion so that the end of the pillar accommodated in the accommodating groove is capable of moving along the sliding groove.

5. The pen feeding mechanism according to claim 4, characterized in that: The fixing member has a supporting portion, which is located on the circumferential side of the pen inlet. The supporting portion and the accommodating portion are arranged opposite to each other along the axial direction of the pen clamping assembly. The supporting portion is capable of accommodating and supporting one end of the pillar, and the accommodating portion is capable of accommodating and supporting the other end of the pillar, so that the pen clamping assembly is erected above the pen inlet. Under the condition that one end of the pillar accommodated in the accommodating groove moves along the sliding groove, the pillar is capable of rotating around one end accommodated in the supporting portion to adjust the width of the pen clamping gap.

6. The pen feeding mechanism according to claim 4, characterized in that: The upper part of the receiving groove and the upper part of the sliding groove are both communicated with the outside world. The receiving groove pen feeding mechanism also includes a cover plate, which is arranged above the receiving groove and the sliding groove to shield the adjusting member.

7. The pen feeding mechanism according to any one of claims 1 to 6, characterized in that: The adjusting member is a compression spring, the extension direction of which is consistent with the arrangement direction of the pen clamping assembly. One end of the compression spring abuts against the pen clamping assembly, and the other end of the compression spring abuts against the fixing member, so that the two pen clamping assemblies are suitable for moving toward or away from each other along the arrangement direction to adjust the width of the pen clamping gap.

8. The pen feeding mechanism according to any one of claims 2 to 6, characterized in that: Along the axial direction of the roller, the roller has opposite pen clamping ends and enlarged ends, and the roller has an outer circumferential surface. The radial dimension of the outer circumferential surface gradually increases from the pen clamping end to the enlarged end. Under the condition that the two pen clamping assemblies are arranged on the fixed member, the pen clamping ends and the enlarged ends of the two rollers are arranged on opposite sides of the axial direction of the pen clamping assembly to form the pen clamping gap between the outer circumferential surfaces of the two rollers.

9. The pen feeding mechanism according to claim 8, characterized in that: The pen clamp assembly also includes a reset member, which is sleeved on the pillar. The reset member and the roller are arranged axially so that the reset member is elastically clamped axially between the pen clamping end of the roller and the fixing member, so that the rollers of the two pen clamp assemblies are suitable for moving toward or away from each other along the axial direction to adjust the width of the pen clamping gap.

10. An automatic pencil sharpener, characterized in that: include: The pen feeding mechanism according to any one of claims 1 to 9; a knife holder, the knife holder being located below the pencil feeding mechanism and capable of cutting pencils; A driving assembly is connected to the tool holder to drive the tool holder to rotate.

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