A bevelled pencil shavings rod cutter

Abstract

The application relates to a pencil rod planing cutter required for processing wood pencil rods, in particular to a bevel planing pencil rod planing cutter. The application adopts a bevel planing scheme, the axis of the cutter body is not parallel to the pencil plate but has a certain angle, and the bevel planing pencil rod planing cutter is relatively inclined to rotate and planing processes the pencil plate, so that the machining demand of the special-shaped arrangement method in some pencil plates cannot be met by the vertical planing of the prior art.

Description

Technical Field

[0001] This application relates to cutting tools required for pencil processing, and more particularly to planing tools required for processing wooden pencils. Background Technology

[0002] Current methods used by pencil factories to produce wooden triangular pencils and triangular derivative pencils are relatively wasteful of materials and detrimental to the environment. However, the patent published by the China National Intellectual Property Administration on August 29, 2025 (patent number 202510845547X), entitled "A Processing Method and Pencil for Saving Wood," is relatively material-saving and environmentally friendly. Due to the arrangement characteristics of pencils within the pencil sheet, current technology can only divide the pencil sheet into individual pencils through sawing and cutting. This method results in relatively rough pencil shafts and a limited range of pencil shapes that can be produced. Summary of the Invention

[0003] In view of the above situation and to overcome the shortcomings of the prior art, this application provides a beveled pencil plane blade, such as... Figure 5 As shown, by changing the shape of the planer blade, the pencil board can be processed by oblique rotational planing. This enables the planing of pencils with special arrangements of pencil boards, similar to the pencils published by the State Intellectual Property Office of China on August 29, 2025 (Patent No. 202510845547X, "A Processing Method and Pencil for Saving Wood"), which can improve the required stubble ratio and allow for greater diversity in the shape of the pencils produced by planing.

[0004] To achieve the above objectives and to better explain the present invention, this application provides the following technical solutions.

[0005] Figures 1, 2, 3, and 4. Figure 5 As shown, a beveled pencil plane includes a blade and several cutting peaks and valleys distributed on its outer edge surface. The blade can drive the cutting peaks and valleys on its outer edge surface to rotate 360° around the blade's axis. The blade has two ends with different sizes along its axial direction (i.e., the maximum cross-section of the blade along its axial direction is trapezoidal). The maximum radial width at one end of the blade along its axial direction is greater than or less than the maximum radial width at the other end of the blade along its axial direction by at least 2.5 cm (i.e., the upper base of the trapezoidal maximum cross-section along its axial direction is less than the lower base by at least 2.5 cm).

[0006] The optimized state, formed by the blade rotating 360° around its axis (i.e., the area swept out by the trapezoidal maximum axial cross-section of the blade after 360° rotation), is a frustum shape. The diameter of the upper base of the frustum shape formed by the blade rotating 360° around its axis is at least 3.36 cm smaller than the diameter of the lower base. When the blade rotates 360° around its axis, the generatrix of the frustum shape (which is also the outer edge surface of the blade) forms an angle of 15° to 45° with the blade axis (i.e., the angle between the extension of the generatrix of the frustum shape and the extension of the blade axis).

[0007] The optimized blade has a row of teeth arranged in an alternating pattern of several sharp peaks and several sharp valleys on the outer edge surface of the blade. The rows of teeth are not parallel to the blade axis. The radial distances between the two ends of the rows of teeth and the blade axis are not equal. The radial distance between the rows of teeth near the smaller end of the blade axis (i.e., the upper base of the trapezoid with the largest axial section of the blade) and the blade axis is smaller than the radial distance between the rows of teeth near the larger end of the blade axis (i.e., the lower base of the trapezoid with the largest axial section of the blade) and the blade axis. The height of the sharp peaks in the rows of teeth on the outer surface of the blade is greater than the height of the adjacent sharp valleys. There are at least two sets of rows of teeth on the outer surface of the blade.

[0008] The optimized design features holes in the blade for mounting the blade shaft.

[0009] The optimized blade has multiple planing rings, and the outer surface of each planing ring has a cutting peak or a cutting valley, or at least one cutting peak and at least one cutting valley. The cutting peaks and valleys on the outer surfaces of multiple planing rings can form a row of cutting teeth.

[0010] The optimized blade has multiple planing rings, and the outer surface of each planing ring has at least two cutting peaks or at least two cutting valleys or at least two cutting peaks and at least two cutting valleys. The cutting peaks and cutting valleys on the outer surfaces of the multiple planing rings can form a row of cutting teeth.

[0011] The above solution changes the shape of the traditional pencil planer, making its blade axis not parallel to the pencil board, but at a certain angle. During operation, the slanted pencil planer of this application can tilt and rotate the pencil board for planing, which can meet the processing requirements of the special arrangement of pencils in the pencil board as described in similar patent number: 202510845547X "A Processing Method and Pencil for Saving Wood". It also meets the current pen manufacturing process requirements for the burr ratio and the relatively diverse pencil shaft shapes that can be planed. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the state in which the blade of this application is rotated 360° around the blade's axis, forming a frustum shape.

[0013] Figure 2 This is the largest axial section of this application. Figure 1 .

[0014] Figure 3 This is the largest axial section of this application. Figure 2 .

[0015] Figure 4 This is a radial view of this application.

[0016] Figure 5 This is a schematic diagram of the application and the work of the pencil board beveling. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The design will now be illustrated with reference to the accompanying drawings and embodiments.

[0018] Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this invention.

[0019] Although the instruction manual mentions pencils or uses pencils as examples, this does not imply an exclusive intent. Therefore, this application is not limited to manufacturing pencils alone. Pencil-shaped pens used for writing, marking, sketching, drawing, and makeup, such as colored pencils and eyebrow pencils, can also achieve the purpose of oblique planing using this application and should all fall within the scope of protection of this application. Similarly, the use of words such as "triangle" or "triangle as an example" does not imply an exclusive intent and does not refer solely to pure triangles. Derivative shapes of triangles, as well as special arrangements of heart-shaped or hexagonal rods in pencil plates, can also achieve the purpose of oblique planing using this application and should also fall within the scope of protection of this application.

[0020] Example 1

[0021] As shown in Figure 1 and Figure 2 Figure 5 As shown, a beveled pencil sharpener includes a blade 1 and fourteen cutting peaks 2 and six cutting valleys 3 distributed on its outer edge surface. The blade 1 can drive the cutting peaks 2 and cutting valleys 3 on its outer edge surface to rotate 360° around the blade axis 7. The two ends of the blade 1 are of different sizes in the axial direction (i.e., the maximum axial cross-section is trapezoidal). The maximum radial width of one end of the blade 1 in the axial direction (the upper base of the trapezoidal maximum axial cross-section of the blade) is 2.5 cm smaller than the maximum radial width of the other end of the blade 1 in the axial direction (the lower base of the trapezoidal maximum axial cross-section of the blade).

[0022] This embodiment changes the shape of the traditional pencil planer blade, enabling oblique rotary planing of pencil plates. This allows for the processing of irregular pencil arrangement methods in pencil plates that cannot be achieved by vertical planing, and meets the current requirements for brittle ratio in pencil manufacturing processes, as well as allowing for a greater variety of pencil shapes.

[0023] Example 2

[0024] As shown in Figure 1, and in conjunction with the above embodiment, the state formed by the blade 1 rotating 360° around the blade axis 7 (i.e., the area swept out by the largest axial cross-section trapezoid of the blade 1 when the blade 1 rotates 360° around the blade axis 7) is a frustum shape. The diameter of the upper base of the frustum shape formed by the blade 1 rotating 360° around the blade axis 7 is at least 3.36 cm smaller than the lower base. When the blade 1 rotates 360° around the blade axis 7, the generatrix of the frustum shape (which is also the outer edge surface of the blade) forms a 30° angle with the blade axis 7 (i.e., the angle between the extension of the generatrix of the frustum shape and the extension of the blade axis 7).

[0025] In this embodiment, oblique rotary planing can be performed, and during operation, the pencil board can be rotated at an oblique angle of 30° for planing, so as to more accurately complete the processing of irregular pencil arrangement methods in the pencil board that cannot be completed by vertical planing.

[0026] Example 3

[0027] like Figure 2 , Figure 5 As shown, and in conjunction with the above embodiments, there is a row of cutting teeth 4 on the outer edge surface of the blade 1, which is formed by seven cutting peaks 2 and six cutting valleys 3 arranged alternately. The row of cutting teeth 4 is not parallel to the blade axis 7. The radial distances between the two ends of the row of cutting teeth 4 and the blade axis 7 are not equal. The radial distance between the row of cutting teeth 4 near the small axial end of the blade 1 (i.e., the upper bottom of the trapezoid with the largest axial cross section of the blade 1) and the blade axis 7 is smaller than the radial distance between the row of cutting teeth 4 near the large axial end of the blade 1 (i.e., the lower bottom of the trapezoid with the largest axial cross section of the blade 1) and the blade axis 7. In the row of cutting teeth 4 on the outer surface of the blade 1, the height of the cutting peak 2 is greater than the height of the adjacent cutting valley 3. There are at least two sets of cutting teeth 4 on the outer edge surface of the blade 1.

[0028] In this embodiment, the cutting peaks 2 and cutting valleys 3 are arranged alternately in the form of grouped cutting tooth rows 4, and there are two groups of cutting tooth rows 4 to improve work efficiency. In practical applications, three or more groups of cutting tooth rows 4 are suitable for planing work, and this application does not need to list them all.

[0029] Example 4.

[0030] like Figure 4 As shown, and in conjunction with the above embodiments, the blade 1 is provided with a hole 6 for mounting the blade shaft.

[0031] In this embodiment, the cavity 6 is used to fit the pencil planer base.

[0032] Example 5.

[0033] like Figure 3As shown, and in conjunction with the above embodiments, a slanted pencil planer blade has seven planing rings 5 ​​on its blade body. The outer edge surfaces of six planing rings 5 ​​have two cutting peaks 2 and two cutting valleys 3, and the outer edge surface of one planing ring 5 has two cutting peaks 2.

[0034] In this embodiment, the blade 1 is a split structure, and multiple planing rings 5 ​​can be assembled into a single blade 1 to adapt to the manufacturing process of split-type tools.

Claims

1. A beveled pencil sharpener, comprising a blade (1) and a plurality of cutting peaks (2) and a plurality of cutting valleys (3) distributed on its outer edge surface, wherein the blade (1) can drive the cutting peaks (2) and the cutting valleys (3) on its outer edge surface to rotate 360° around the blade axis (7), characterized in that: The two ends of the blade (1) are of different sizes along the axial direction. The maximum radial width of one end of the blade (1) is greater than or less than the maximum radial width of the other end of the blade (1) by at least 2.5 cm.

2. The beveled pencil planer blade according to claim 1, characterized in that: The blade (1) is rotated 360° around the blade axis (7) to form a frustum shape. When the blade (1) rotates 360° around the blade axis (7), the generatrix (8) of the frustum shape forms an angle of 15° to 45° with the blade axis (7).

3. A beveled pencil plane blade according to claim 1 or 2, characterized in that: On the outer edge surface of the blade (1), there is a row of cutting teeth (4) formed by a number of cutting peaks (2) and a number of cutting valleys (3) arranged alternately. The row of cutting teeth (4) is not parallel to the axis (7) of the blade. The radial distance between the two ends of the row of cutting teeth (4) and the axis (7) of the blade is not equal. The radial distance between the row of cutting teeth (4) near the small axial end of the blade (1) and the axis (7) of the blade is smaller than the radial distance between the row of cutting teeth (4) near the large axial end of the blade (1) and the axis (7). The height of the cutting peak (2) in the row of cutting teeth (4) on the outer surface of the blade (1) is greater than the height of the adjacent cutting valley (3). There are at least two sets of the row of cutting teeth (4) on the outer surface of the blade (1).

4. A beveled pencil plane blade according to claim 1 or 2, characterized in that: The blade (1) has a hole (6) for mounting the blade shaft.

5. A beveled pencil plane blade according to claim 3, characterized in that: The blade (1) has a hole (6) for mounting the blade shaft.

6. A beveled pencil plane blade according to claim 3, characterized in that: The blade (1) has multiple planing rings (5), and the outer surface of the planing ring (5) has at least two cutting peaks (2) or at least two cutting valleys (3) or at least two cutting peaks (2) and at least two cutting valleys (3). The cutting peaks (2) and cutting valleys (3) on the outer surface of the multiple planing rings (5) can form the cutting tooth row (4).

7. A beveled pencil plane blade according to claim 5, characterized in that: The blade (1) has multiple planing rings (5), and the outer surface of the planing ring (5) has at least two cutting peaks (2) or at least two cutting valleys (3) or at least two cutting peaks (2) and at least two cutting valleys (3). The cutting peaks (2) and cutting valleys (3) on the outer surface of the multiple planing rings (5) can form the cutting tooth row (4).

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