A four-blade engraving tool

Abstract

The utility model discloses a four-blade engraver, including the knife bar, the handle and the knife head, the knife bar, handle and the knife head integrated setting are provided, the knife head sets up four pyramid structures, the knife head includes the cone handle section and the cone tip section, the cone tip section sets up the diamond material, the cone tip section welds in the cone handle section front side, the cone tip section end part is provided with the flat mouth, through being provided with the first annular groove in the handle both sides, and the special holding part is formed in the middle part, provides the safe, reliable gripping point of far away sharp knife head for operating personnel. When replacing the cutting tool, the finger can stably hold on the holding part, reduces the opportunity of the finger direct contact sharp knife tip especially pyramid tip and flat mouth edge edge, fundamentally solves the security risk of the operating personnel in the replacement process.

Description

Technical Field

[0001] This utility model relates to the field of carving knife technology, and in particular to a four-bladed carving knife. Background Technology

[0002] In the field of fine carving of materials such as jade, hardwood, and glass, four-edged carving knives are widely used for grooving, trimming, and detail carving due to their unique pyramidal structure and sharp cutting edge. Traditional carving knives, especially those with a pyramidal cutting head, are usually integrally formed or rigidly connected to the handle or grip. While this structure provides good rigidity and precision, it also brings significant safety hazards: when it is necessary to replace a worn cutting head or switch between different sizes of knives according to carving needs, the operator's fingers inevitably need to directly contact or come very close to the extremely sharp tip (especially the tip of the pyramidal structure). Due to the exceptionally sharp tip and the often confined working space, the operator's hands are easily cut or even stabbed if not careful. In addition, the design of existing carving knife handles often lacks optimization for safe grip and replacement operations, resulting in insufficient grip comfort and anti-slip properties, further increasing the operational risks. At the same time, insufficient wear resistance of the cutting head (especially the tip) and chipping due to insufficient edge strength also affect carving efficiency and knife life. Utility Model Content

[0003] The purpose of this utility model is to solve the problems mentioned above and provide a four-bladed carving knife.

[0004] A four-bladed carving knife includes a handle, a shank, and a blade head; the handle, shank, and blade head are integrally formed; the blade head is a four-sided pyramid structure; the blade head includes a cone shank section and a cone tip section; the cone tip section is made of diamond material; the cone tip section is welded to the front side of the cone shank section; the end of the cone tip section has a flat end.

[0005] Furthermore, the handle includes first annular grooves on both sides; a grip portion is formed in the middle of the first annular groove.

[0006] Furthermore, the gripping part is configured as an arc-shaped structure; the gripping part is configured with an inner concave radius of 5~8mm.

[0007] Furthermore, the concave radius of the first annular groove is 0.4~0.8mm.

[0008] Furthermore, the angle of the cutter head is 70° or 90°.

[0009] Furthermore, the diameter of the flat opening is 0.44~0.45mm; the edge of the flat opening is set as a sharp corner.

[0010] Furthermore, the length ratio of the handle to the blade head is 1:1.

[0011] The beneficial effects of this utility model are:

[0012] By incorporating first annular grooves on both sides of the handle, forming a dedicated grip area in the center, a safe and reliable gripping point is provided for the operator, away from the sharp blade tip. When changing tools, the fingers can hold the grip area stably, reducing the chance of fingers directly contacting the sharp blade tip, especially the pointed tip of a pyramid or the sharp edge of a flat blade, fundamentally solving the safety hazard of accidental injury to the operator during tool changes. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] In the figure, 1 is the tool holder; 2 is the tool shank; 21 is the first annular groove; 22 is the grip; 3 is the tool tip; 31 is the tapered shank section; 32 is the tapered tip section; and 321 is the flat end. Detailed Implementation

[0015] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0016] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Example 1

[0019] like Figure 1 As shown:

[0020] A four-bladed carving knife includes a handle 1, a shank 2, and a blade 3; the handle 1, shank 2, and blade 3 are integrally formed; the integral formation of the handle 1, shank 2, and blade 3 ensures the rigidity and stability of the overall structure, which is beneficial for force transmission and control of carving precision.

[0021] The cutter head 3 is configured as a square pyramid structure;

[0022] The cutting head 3 includes a tapered shank section 31 and a tapered tip section 32; the tapered tip section 32 is made of diamond material; the tapered tip section 32 is welded to the front side of the tapered shank section 31; the use of diamond material for the tapered tip section 32 and its welding onto the tapered shank section 31 greatly improves the hardness and wear resistance of the cutting tip, enabling it to maintain its sharpness for a longer time when carving hard materials and extending the overall service life of the cutting tool.

[0023] The tapered tip 32 has a flat end 321. The flat end 321 and the angular design of its edges not only provide specific carving functions, but more importantly, significantly enhance the local structural strength of the cutting edge, effectively reducing the risk of chipping during carving and ensuring carving accuracy and efficiency.

[0024] The handle 2 includes a first annular groove 21 located on both sides; a gripping part 22 is formed in the middle of the first annular groove 21.

[0025] By providing first annular grooves 21 on both sides of the handle 2 and forming a dedicated gripping part 22 in its center, a safe and reliable gripping point is provided for the operator, away from the sharp blade tip 3. When changing the blade, the fingers can hold it stably on the gripping part 22, completely avoiding or greatly reducing the chance of the fingers directly contacting the sharp blade tip, especially the tip of the pyramid and the edge of the flat blade 321, fundamentally solving the safety hazard of accidentally injuring the operator during the blade change process.

[0026] The grip portion 22 is designed with an arc-shaped structure, preferably with an inner concave radius of 6mm, which perfectly fits the curvature of the fingertips, providing a comfortable grip and reducing hand fatigue during long-term operation.

[0027] The gripping part 22 is configured as an arc-shaped structure; the gripping part 22 is configured with an inner concave radius of 5~8mm.

[0028] The concave radius of the first annular groove 21 is 0.4~0.8mm.

[0029] The first annular groove 21 preferably has an inner concave radius of 0.6 mm, forming a clear boundary and friction area on both sides of the grip 22. This significantly enhances the friction between the fingers and the handle 2, ensuring a more stable grip and preventing slippage during forceful operation or when hands are wet. This further reduces the risk of accidentally touching the blade tip due to slippage.

[0030] The angle of the cutting head 3 is 70° or 90°. Offering two cutting head angle options of 70° or 90° allows for different carving depths, pressures, and levels of detail, thus enhancing the tool's versatility.

[0031] The diameter of the flat opening 321 is 0.44~0.45mm; the edge of the flat opening 321 is set as a sharp angle.

[0032] The length ratio of the handle 2 to the blade 3 is 1:1. This 1:1 length ratio design ensures that the blade 3 has sufficient length for fine carving while also providing ample space for a safe grip on the handle 2, resulting in a balanced overall tool structure and a better operating feel.

[0033] This invention innovatively designs a safe grip structure in the handle 2, combined with a diamond tip, a reinforced flat edge 321 design, and a reasonable proportional distribution, successfully solving the core safety problem when changing the blade head 3 of a four-blade carving knife. At the same time, it significantly improves the comfort of operation, anti-slip properties, wear resistance of the tool, anti-chipping ability, and overall user experience.

[0034] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A four-bladed carving knife, characterized in that: It includes a tool holder (1), a tool shank (2), and a tool head (3); the tool holder (1), the tool shank (2), and the tool head (3) are integrally formed; the tool head (3) is a four-sided pyramid structure; the tool head (3) includes a cone shank section (31) and a cone tip section (32); the cone tip section (32) is made of diamond material; the cone tip section (32) is welded to the front side of the cone shank section (31); the end of the cone tip section (32) is provided with a flat end (321).

2. A four-bladed carving knife according to claim 1, characterized in that: The handle (2) includes a first annular groove (21) located on both sides; a gripping part (22) is formed in the middle of the first annular groove (21).

3. A four-bladed carving knife according to claim 2, characterized in that: The gripping part (22) is configured as an arc-shaped structure; the gripping part (22) is configured as having an inner concave radius of 5~8mm.

4. A four-bladed carving knife according to claim 2, characterized in that: The concave radius of the first annular groove (21) is 0.4~0.8mm.

5. A four-bladed carving knife according to claim 1, characterized in that: The angle of the cutter head (3) is 70° or 90°.

6. A four-bladed carving knife according to claim 1, characterized in that: The diameter of the flat opening (321) is 0.44~0.45mm; the edge of the flat opening (321) is set as a sharp corner.

7. A four-bladed carving knife according to claim 1, characterized in that: The length ratio of the handle (2) to the blade (3) is 1:1.

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