CN112793345A

CN112793345A - Pencil sharpener cutter, pencil sharpening mechanism and pencil sharpener

Info

Publication number: CN112793345A
Application number: CN202011595451.6A
Authority: CN
Inventors: 谷晓川; 朱传奇
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-05-14

Abstract

The invention provides a pencil sharpener cutter, a pencil sharpening mechanism and a pencil sharpener, relates to the technical field of stationery, and solves the technical problem that the proportion of broken cores of the pencil sharpener cutter in the prior art is high. The pencil sharpener cutter and the pencil sharpener comprise a cutting part and a friction part, wherein the cutting part is provided with a cutting edge, and when the cutting part and the sketch pencil rotate relatively, the cutting part can curl and sharpen a wooden part of the sketch pencil; the friction part is provided with a grinding tool, and when the friction part and the sketch pencil relatively rotate, the grinding tool can grind the pencil lead of the sketch pencil. The invention is used for providing a pencil sharpener cutter and a pencil sharpener which are not easy to break.

Description

Pencil sharpener cutter, pencil sharpening mechanism and pencil sharpener

Technical Field

The invention relates to the technical field of stationery, in particular to a pencil sharpener cutter, a pencil sharpening mechanism and a pencil sharpener.

Background

The traditional pencil sharpener of writing tool adopts the helical blade mostly, and the characteristics of this type of cutting edge are sharp, and it is fast to coil and cut, comparatively level and smooth when the book is cut wood, and the shortcoming is that helical blade's concave-convex structure only is fit for the book to cut harder lead, for example: 4H, 3H, 2H, HB, B, 2B, 3B, lead core with higher hardness such as 4B, if the lead core reaches more than 6B, or soft lead core such as charcoal core, various lead, the rugged structure of helical blade self will form an anomalous force to soft lead core, cause the higher proportion of breaking core to appear, with the change of lead core softness, and the requirement of sharpening improves, the proportion of breaking core will be improved relatively.

The applicant has found that the prior art has at least the following technical problems: the proportion of broken cores of the existing pencil sharpener is high.

Disclosure of Invention

The invention aims to provide a pencil sharpener cutter, a pencil sharpening mechanism and a pencil sharpener, and aims to solve the technical problem that the proportion of broken cores of the pencil sharpener cutter in the prior art is high. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.

In order to achieve the purpose, the invention provides the following technical scheme:

the pencil sharpener cutter, the pencil sharpening mechanism and the pencil sharpener provided by the invention comprise a cutting part and a friction part, wherein the cutting part is provided with a cutting edge, and when the cutting part and a sketch pencil rotate relatively, the cutting part can curl and sharpen a wooden part of the sketch pencil; the friction part is provided with a grinding tool, and when the friction part and the sketch pencil rotate relatively, the grinding tool can grind the pencil lead of the sketch pencil.

Preferably, the cutting portion is provided with a helical blade.

Preferably, the grinding tool is a 80-150 mesh grinding wheel.

Preferably, the length ratio of the cutting part to the friction part is 2: 1.

the pencil sharpening mechanism comprises a tool rest and the pencil sharpener tool, wherein the pencil sharpener tool is rotatably arranged on the tool rest, a pencil inserting channel is arranged on the tool rest, the pencil sharpener tool is positioned on one side of the pencil inserting channel, and the central axis of the pencil inserting channel and the central axis of the pencil sharpener tool form an included angle.

Preferably, the pen inserting channel is a cavity with a conical structure.

Preferably, a first base and a second base are arranged on the tool rest, a first mounting hole and a second mounting hole are respectively arranged on the first base and the second base, a through hole is arranged in the axial direction of the pencil sharpener tool, and a fixed rotating shaft penetrates through the through hole and is fixed between the first mounting hole and the second mounting hole;

the first base is provided with a positioning hole which is communicated with the first mounting hole, and a positioning screw penetrates through the positioning hole and abuts against the fixed rotating shaft.

Preferably, a gear is arranged at the end part of the pencil sharpener cutter, and a driving mechanism is connected to the gear and can drive the pencil sharpener cutter to rotate.

Preferably, the driving mechanism is a hand crank, and a rotating shaft of the hand crank is matched with the gear.

A pencil sharpener comprises a box body, a pencil feeding mechanism and the pencil sharpening mechanism.

The invention has the beneficial effects that: the pencil sharpener cutter comprises a cutting part and a friction part, wherein the cutting part is used for curling and cutting a wooden part of a sketch pencil to enable a lead core of the sketch pencil to leak out, then the friction part is used for curling and cutting the lead core of the sketch pencil, and repeated friction is utilized to curl and cut the lead core, so that irregular acting force of a spiral blade uneven structure on the lead core is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the construction of a pencil sharpener of the present invention;

FIG. 2 is a schematic structural diagram (one) of a pencil sharpening mechanism according to the present invention;

fig. 3 is a schematic structural diagram (two) of the pencil sharpening mechanism of the present invention.

FIG. 1, box body; 2. a pen feeding mechanism; 3. a pencil sharpening mechanism; 4. a hand crank; 31. a tool holder; 32. a pencil sharpener cutter; 33. a pen insertion channel; 34. a first base; 35. a second base; 36. fixing the rotating shaft; 37. A cutting portion; 38. a friction portion; 39. a gear.

Detailed Description

The contents of the present invention and the differences between the present invention and the prior art can be understood with reference to fig. 1 to 3 and the text. The invention will now be described in further detail, including the preferred embodiments, with reference to the accompanying drawings, in which some alternative embodiments of the invention are shown. It should be noted that: any technical features and any technical solutions in the present embodiment are one or more of various optional technical features or optional technical solutions, and for the sake of brevity, this document cannot exhaustively enumerate all the alternative technical features and alternative technical solutions of the present invention, and is also not convenient for each embodiment of the technical features to emphasize it as one of various optional embodiments, so those skilled in the art should know that: any technical means provided by the invention can be replaced or any two or more technical means or technical characteristics provided by the invention can be combined with each other to obtain a new technical scheme. Any technical features and any technical solutions in the present embodiment do not limit the scope of the present invention, and the scope of the present invention should include any alternative technical solutions that can be conceived by those skilled in the art without inventive efforts and new technical solutions that can be obtained by those skilled in the art by combining any two or more technical means or technical features provided by the present invention with each other.

In the description of the present invention, it is to be noted that "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.

The invention provides a pencil sharpener cutter, a pencil sharpening mechanism and a pencil sharpener which are not easy to break.

The technical solution provided by the present invention is explained in more detail with reference to fig. 1 to 3.

The invention provides a pencil sharpener cutter, a pencil sharpening mechanism and a pencil sharpener, which comprise a cutting part and a friction part, wherein the cutting part is provided with a cutting edge, and when the cutting part and a sketch pencil rotate relatively, the cutting part can curl and sharpen a wooden part of the sketch pencil; the friction part is provided with a grinding tool, and when the friction part and the sketch pencil rotate relatively, the grinding tool can grind the pencil lead of the sketch pencil.

The pencil sharpener cutter comprises a cutting part and a friction part, wherein the cutting part is used for curling and cutting a wooden part of a sketch pencil to enable a lead core of the sketch pencil to leak out, then the friction part is used for curling and cutting the lead core of the sketch pencil, and repeated friction is utilized to curl and cut the lead core, so that irregular acting force of a spiral blade uneven structure on the lead core is avoided.

As an alternative embodiment, the cutting portion is provided with a helical cutting edge. The cutting part adopts helical blade, and helical blade is sharp to it is fast to coil cut, comparatively level and smooth when rolling up and cutting wood.

In an alternative embodiment, the abrasive article is an 80-150 mesh wheel. The grinding wheel is used for repeatedly rubbing the lead core for coiling and cutting, so that irregular acting force of the uneven structure of the helical blade on the lead core is avoided.

As an alternative embodiment, the length ratio of the cutting portion to the friction portion is 2: 1. the length proportion of the cutting part and the friction part is selectively set according to the lead length requirement of the sketch pencil or the angle between the pencil inserting channel and the cutter of the pencil sharpener.

When the sketch pencil is cut, the sketch pencil enters from the pencil inserting channel, the sketch pencil and a pencil sharpener cutter are driven to rotate relatively, the cutting part sharpens the wooden part of the sketch pencil to expose the lead, and the friction part repeatedly rubs the lead of the sketch pencil to sharpen the lead.

In an alternative embodiment, the pen inserting channel is a cavity with a conical structure.

As an optional implementation manner, a first base and a second base are arranged on the tool rest, a first mounting hole and a second mounting hole are respectively arranged on the first base and the second base, a through hole is arranged in the axial direction of the pencil sharpener tool, and a fixed rotating shaft passes through the through hole and is fixed between the first mounting hole and the second mounting hole;

The pencil sharpener cutter is arranged on the cutter rest through the fixed rotating shaft, the fixed rotating shaft is fixed by the positioning screw, and the pencil sharpener cutter can rotate on the fixed rotating shaft to sharpen the sketch pencil.

In an alternative embodiment, a gear is provided at an end of the pencil sharpener cutter, and a driving mechanism is connected to the gear and can drive the pencil sharpener cutter to rotate.

In an optional embodiment, the driving mechanism is a hand crank, and a rotating shaft of the hand crank is matched with the gear.

Example 1:

the pencil sharpener provided by the invention comprises a box body 1, a pencil feeding mechanism 2 and a pencil sharpening mechanism 3, wherein the pencil sharpening mechanism 3 comprises a tool rest 31 and a pencil sharpener cutter 32,

the pencil sharpener cutter 32 is rotatably arranged on the cutter frame 31, a pencil inserting channel 33 is arranged on the cutter frame 31, the pencil sharpener cutter 32 is located on one side of the pencil inserting channel 33, and an included angle is formed between the central axis of the pencil inserting channel 33 and the central axis of the pencil sharpener cutter 32.

Specifically, a first base 34 and a second base 35 are arranged on the tool rest 31, a first mounting hole and a second mounting hole are respectively arranged on the first base 34 and the second base 35, a through hole is arranged in the axial direction of the pencil sharpener tool 32, and a fixed rotating shaft 36 passes through the through hole and is fixed between the first mounting hole and the second mounting hole;

a positioning hole is formed in the first base 34, the positioning hole is communicated with the first mounting hole, and a positioning screw passes through the positioning hole and abuts against the fixed rotating shaft 36.

The pencil sharpener cutter 32 comprises a cutting part 37 and a friction part 38, the cutting part 37 is provided with a spiral blade, and when the cutting part 37 rotates relative to the sketch pencil, the cutting part 37 can curl the wood part of the sketch pencil; the friction portion 38 is provided with a grinding tool, and when the friction portion 38 and the sketch pencil rotate relatively, the grinding tool can grind and sharpen the lead core of the sketch pencil. In this embodiment, the abrasive article is an 80-150 mesh wheel.

Further, the cutter body still includes gear 39, gear 39 sets up the tip of cutter body, be connected with crank 4 on the gear 39, crank 4's pivot with gear 39 cooperatees, crank 4 can drive the cutter body rotates.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A pencil sharpener cutter is characterized by comprising a cutting part and a friction part, wherein the cutting part is provided with a cutting edge, and when the cutting part and a sketch pencil rotate relatively, the cutting part can curl and sharpen a wooden part of the sketch pencil; the friction part is provided with a grinding tool, and when the friction part and the sketch pencil rotate relatively, the grinding tool can grind the pencil lead of the sketch pencil.

2. The sharpener insert of claim 1 wherein said cutting portion is provided with a helical cutting edge.

3. The sharpener tool of claim 1 wherein said grinding tool is an 80-150 mesh grinding wheel.

4. The sharpener insert of claim 1 wherein the length ratio of said cutting portion to said friction portion is 2: 1.

5. a pencil sharpening mechanism comprising a tool holder and a pencil sharpener according to any one of claims 1-4, said pencil sharpener tool being rotatably mounted on said tool holder, said tool holder having a pencil insertion channel, said pencil sharpener tool being located on one side of said pencil insertion channel, the central axis of said pencil insertion channel being disposed at an angle to the central axis of said pencil sharpener.

6. The pencil sharpening mechanism of claim 5 wherein said pencil insertion channel is a cavity of conical configuration.

7. The pencil sharpening mechanism of claim 5 wherein a first base and a second base are disposed on said tool holder, a first mounting hole and a second mounting hole are disposed on said first base and said second base, respectively, a through hole is disposed in an axial direction of said pencil sharpener tool, and a fixed rotating shaft passes through said through hole and is fixed between said first mounting hole and said second mounting hole;

8. The pencil sharpener mechanism of claim 5 wherein a gear is disposed at the end of said pencil sharpener cutter, said gear having a drive mechanism coupled thereto, said drive mechanism capable of driving said pencil sharpener cutter in rotation.

9. The pencil sharpening mechanism as recited in claim 8 wherein said drive mechanism is a hand crank, a shaft of said hand crank cooperating with said gear.

10. A pencil sharpener comprising a housing, a pencil feed mechanism and a pencil sharpener as claimed in any one of claims 5 to 9.