Constant-angle knife sharpener

Abstract

The utility model provides a fixed angle knife sharpener, relates to knife sharpener technical field, the fixed angle knife sharpener includes support body, angle adjustment mechanism and polishing mechanism, angle adjustment mechanism includes angle block, angle wheel and angle fixing subassembly, angle block is installed on the support body, angle block can rotate and move up and down, angle wheel and angle fixing subassembly are fixed on the support body. The angle wheel is connected to the angle block and can rotate, the angle wheel with the angle adjusted through rotation is fixed through an angle fixing assembly, the grinding mechanism comprises a grinding rod assembly, and the grinding rod assembly is connected with the angle wheel. When the knife sharpener is used for grinding a knife, the knife is fixed after the angle of the grinding rod assembly is adjusted, meanwhile, the angle block can freely slide up and down in the grinding process, and therefore the consistent knife grinding angle can be achieved through overall up-and-down movement no matter how the width, length and curve of the knife are.

Description

Technical Field

[0001] The utility model relates to the technical field of knife sharpeners, in particular to a fixed-angle knife sharpener. Background Art

[0002] The principle of manual fixed-angle knife sharpeners currently on the market is to adjust the angle between the grindstone and the blade by adjusting the height of the grinding rod assembly. However, due to the inconsistency of knife shapes, widths and lengths, the existing structure will cause slight changes in the angle between the grindstone and the blade when the grinding rod assembly drives the grindstone to move left or right after the angle is adjusted. Figure 6 When the angle is set at position A, the end of the grinding rod assembly will be raised after it moves to the position of area B, which will cause the angle between the grinding rod assembly and the knife to become smaller, resulting in a curve on the entire blade after grinding and inability to maintain consistency. This application is proposed to address the above defects. Utility Model Content

[0003] The utility model aims to provide a fixed-angle knife sharpener, which solves the problem that in the current fixed-angle knife sharpener, the angle between the grinding rod assembly and the knife changes during the grinding movement process because the angle between the grinding stone and the knife blade is adjusted by adjusting the height of the grinding rod assembly, resulting in a curve in the blade after grinding, which makes it difficult to maintain consistency.

[0004] To solve the above problems, the utility model provides a fixed-angle knife sharpener, comprising a support body, an angle adjustment mechanism and a grinding mechanism, the angle adjustment mechanism comprising an angle block, an angle wheel and an angle fixing assembly, the angle block being mounted on the support body, the angle block being capable of rotating and moving up and down, the angle wheel being connected to the angle block, the angle wheel being capable of rotating, and the angle wheel after rotating to adjust the angle is fixed by the angle fixing assembly, the grinding mechanism comprising a grinding rod assembly, the grinding rod assembly being connected to the angle wheel, when grinding, the angle of the grinding rod assembly is rotated to adjust the angle, and the angle is fixed after the adjustment is completed, and a consistent grinding angle is ensured by the up and down movement of the angle block on the support body during the grinding process.

[0005] Furthermore, the angle fixing assembly includes an angle hole cover plate and an angle pin, the angle hole cover plate is provided with a plurality of angle holes, the angle wheel is provided with a plurality of positioning holes, and the angle pin is inserted into the angle hole and the positioning hole to fix the angle of the angle wheel.

[0006] Furthermore, the angle fixing assembly also includes an angle locking piece, which can press the angle wheel. After the angle wheel adjusts its angle, the angle locking piece is used to press the angle wheel to achieve fixation.

[0007] Furthermore, the angle locking member is a locking screw, and at least two groups of the locking screws are provided, and the locking screws are installed on the angle block.

[0008] Furthermore, the grinding rod assembly can move along the axial direction of the grinding rod assembly on the angle wheel.

[0009] Furthermore, the support body is a shaft body, and the angle block can move up and down along the shaft body and rotate around the shaft body.

[0010] Furthermore, the fixed-angle knife sharpener further comprises a height-adjusting support assembly, wherein the height-adjusting support assembly is used to support the angle block so that the lowest point of the angle block is maintained at this height position.

[0011] Furthermore, the height adjustment support assembly includes a screw hole seat and a threaded rotating block, and the support height is adjusted by rotating the threaded rotating block.

[0012] Furthermore, fixing screws are provided on the screw hole seat and the threaded rotating block.

[0013] Furthermore, the fixed-angle knife sharpener further comprises a knife holder, which is used to clamp the knife to be sharpened.

[0014] A knife sharpening method, based on the above-mentioned fixed-angle knife sharpener, comprises the following steps:

[0015] Clamp the tool to be sharpened on the tool holder and select the mode according to the sharpening requirements:

[0016] Mode 1: Rotate and adjust the angle of the angle wheel to match the inclination angle of the grinding rod assembly with the grinding angle of the blade. Use the angle fixing assembly to fix the angle wheel and operate the grinding rod assembly to grind the tool. During the grinding process, the angle block moves up and down on the support body to ensure a consistent grinding angle.

[0017] Mode 2: Adjust the height of the support assembly to adjust the grinding rod assembly. The angle wheel does not fix the angle, and the grinding rod assembly is operated to grind the tool.

[0018] Mode 3: Adjust the support height of the support assembly to adjust the angle of the grinding rod assembly. After the angle is adjusted, lock the angle wheel to fix the angle, and operate the grinding rod assembly to grind the tool. During the grinding process, the angle block moves up and down on the support body to ensure a consistent grinding angle.

[0019] The beneficial effect of the present invention is that when using the knife sharpener of this scheme to sharpen a knife, the angle of the grinding rod assembly is adjusted and fixed, and the angle block can slide freely up and down during the grinding process. In this way, regardless of the width, length, and curve of the knife, a consistent grinding angle can be achieved through the overall up and down movement, avoiding the problem that when the grinding rod assembly drives the grinding stone to move left or right, the angle between the grinding stone and the blade changes slightly, resulting in a curved blade after grinding and poor consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the overall structure of a fixed-angle knife sharpener;

[0022] Figure 2 A schematic diagram of one side of the angle adjustment mechanism of a fixed-angle knife sharpener;

[0023] Figure 3 A schematic diagram of a fixed-angle knife sharpener from a top perspective;

[0024] Figure 4 Schematic diagram of the exploded structure of the tool holder;

[0025] Figure 5 is an enlarged schematic diagram of the angle adjustment mechanism;

[0026] Figure 6 Schematic diagram of sharpening with a traditional fixed-angle knife sharpener. DETAILED DESCRIPTION

[0027] The following description is intended only to disclose the present invention and to enable those skilled in the art to implement the present invention. The embodiments described below are provided for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention as defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other solutions that do not depart from the spirit and scope of the present invention.

[0028] [Example 1]

[0029] Fixed angle knife sharpener, such as Figure 1 , including a base 1, a knife seat 3, a support body 4, an angle adjustment mechanism 6 and a grinding mechanism 2.

[0030] The support body 4 can be in the form of a frame, a shaft, etc. In this embodiment, a shaft is used, and the shaft is connected to the base 1. The angle adjustment mechanism 6 includes an angle block 66, an angle wheel 67 and an angle fixing component. The angle block 66 is installed on the support body 4, and the two are matched through linear bearings. The angle block 66 can rotate and move up and down. The angle wheel 67 is connected to the rotating shaft 68 on the angle block 66. The angle wheel 67 can rotate. After rotating to adjust the angle, the angle wheel 67 is fixed by the angle fixing component.

[0031] The grinding mechanism 2 includes a grinding rod assembly 21 and a grinding stone 22. The grinding rod assembly 21 is a rod structure with a grinding stone frame 23 installed. The grinding stone frame 23 is used to install the grinding stone 22. Two pieces of grinding stone 22 can be installed. A spring 24 is installed on the grinding rod assembly 21 to enable the grinding stone frame 23 to clamp the grinding stone 22.

[0032] The grinding rod assembly 21 passes through the hole on the angle wheel 67 and cooperates with the angle wheel 67 through a linear bearing. When grinding, the angle of the grinding rod assembly 21 is adjusted by rotating the angle wheel 67. After the adjustment is completed, the angle is fixed. During the grinding process, the angle block 66 moves up and down on the support body 4 to ensure a consistent grinding angle.

[0033] The tool holder 3 is mounted on the base 1 and is used to hold the tool to be sharpened. Figure 4 The tool holder 3 includes at least two tool clamps 32, a mounting bracket 31 and a fixed seat 34. Specifically, the fixed seat 34 is provided with a socket portion 341 for installing the mounting bracket 31. The socket portion 341 is a polyhedron structure. In this embodiment, the polyhedron structure is an octahedron. The mounting bracket 31 is provided with a mounting hole 311 that matches the outline of the polyhedron structure. By switching the mounting contact surface between the mounting hole 311 and the socket portion 341, the angle of the mounting bracket 31 is adjusted. The fixing component is used to fix the mounting bracket 31 on the socket portion 341. When the tool is turned over, the fixing component is released, and the mounting bracket 31 is flipped over and reinstalled on the socket portion 341.

[0034] The tool clamp 32 is movably mounted on the mounting bracket 31, and the distance between the tool clamps 32 can be adjusted according to the length of the tool. Specifically, an adjustment slot 312 is provided on the mounting bracket 31, and the adjusting screw 313 passes through the adjusting slot 312 and is connected to the tool clamp 32. The position of the tool clamp 32 is adjusted by loosening and adjusting the position of the adjusting screw 313 in the adjusting slot 312. The mounting bracket 31 can adjust the mounting angle to adapt to tools of different shapes and sizes or different grinding requirements. The fixing assembly adopts a fixing bolt 33, and a bolt hole 342 that cooperates with the fixing bolt 33 is provided on the fixing seat 34. The head diameter of the fixing bolt 33 is larger than the diameter of the mounting hole 311, which is used to press the mounting bracket 31 after tightening. The mounting bracket 31 and the fixing seat 34 are fastened by the fixing bolt 33. When the tool needs to be turned over, the fixing bolt 33 is unscrewed, and the mounting bracket 31 is turned over and then fixed.

[0035] In this embodiment, Figure 1-Figure 3 The angle fixing assembly includes an angle hole cover plate 61 and an angle latch 62. The angle hole cover plate 61 is provided with several angle holes 64. Specifically, the angle hole cover plate 61 is mounted on the angle block 66 via two fixing pins. The angle hole cover plate 61 is a circular plate with six angle holes 64 distributed thereon, at six angles of 15, 16, 17, 20, 25, and 30 degrees. In other embodiments, other angles can also be set. Correspondingly, the angle wheel 67 is provided with six positioning holes 69. The angle latch 62 is inserted into the angle holes 64 and positioning holes 69 to fix the angle of the angle wheel 67.

[0036] After rotating the angle wheel, the angle pin 62 is inserted through the angle hole 64 on the cover plate, which makes it convenient for users to quickly adjust the angle and fix the angle. The support body 4 and the angle block are matched through linear bearings, so that the angle block can slide freely up and down on the support shaft. In this way, no matter what the width, length, or curve of the knife is, a consistent sharpening angle can be achieved through the overall up and down movement.

[0037] In addition, in order to facilitate users to adjust more angles, the angle fixing assembly also includes an angle locking member 65. The angle locking member 65 can press against the angle wheel 67. After the angle wheel 67 adjusts the angle, the angle locking member 65 is used to press against the angle wheel 67 to achieve fixation. Specifically, the angle locking member 65 is a locking screw. There are at least two groups of locking screws, which are respectively arranged above and below the angle wheel 67. The locking screws are installed on the angle block 66.

[0038] When the user has a special angle requirement, such as 17.5 degrees or 13 degrees, the angle latch 62 is released and the angle wheel 67 can rotate freely. After the special angle is adjusted, the angle is fixed by the two locking screws above and below the angle wheel.

[0039] The angle can be fine-tuned to meet user needs by cooperating with two threaded rotating blocks on the supporting spindle.

[0040] Example 2: Based on Example 1, a height adjustment support assembly 5 is added in this example. The height adjustment support assembly 5 is used to support the angle block 66 so that the lowest point of the angle block 66 is maintained at this height position. Specifically, the height adjustment support assembly 5 can be adjusted in height on the support body 4, thereby adjusting the lowest position of the angle block 66.

[0041] The height-adjustable support assembly 5 can adopt any structure that can be raised and lowered, and the support body can also be set to a retractable structure. In this embodiment, the height-adjustable support assembly 5 includes a screw hole seat 52 and a threaded rotating block 51, and the support height is adjusted by rotating the threaded rotating block 51.

[0042] Preferably, if Figure 1 A fixing screw 53 is provided on the screw hole seat 52 and the threaded rotating block 51. The fixing screw on the threaded rotating block 51 is used to tighten and fix it to the support body or the screw hole seat 52 after rotating to adjust the height. The fixing screw on the screw hole seat 52 is used to fix the screw hole seat 52 on the support body after tightening. After loosening, the position of the screw hole seat 52 on the support body can be adjusted.

[0043] In addition, in other embodiments, a fastening device, such as a fastening bolt, may also be provided on the angle block 66 to be fixed by the fastening device when fixing the height.

[0044] A knife sharpening method, based on the fixed-angle knife sharpener in any of the above embodiments, comprises the following steps:

[0045] Clamp the tool to be sharpened on the tool holder 3 and select the mode according to the sharpening requirements:

[0046] Mode 1: Rotate and adjust the angle of the angle wheel 67 to match the inclination angle of the grinding rod assembly 21 with the grinding angle of the blade, use the angle fixing assembly to fix the angle wheel 67, operate the grinding rod assembly 21 to grind the tool, and during the grinding process, the angle block 66 is moved up and down on the support body 4 to ensure a consistent grinding angle. In this mode, only the angle of the grinding rod assembly is fixed, and the height does not need to be fixed. Under the support of the contact between the grinding stone and the tool, the angle block 66 will not slip, and the angle block 66 can move freely up and down to avoid the problem of slight changes in the angle between the grinding stone and the blade when the grinding rod assembly drives the grinding stone to move left or right, resulting in a curve on the blade after grinding and poor consistency.

[0047] Mode 2: Adjust the support height of the height-adjusting support assembly 5 to adjust the grinding rod assembly 21. The angle wheel 67 is not fixed at an angle, and the grinding rod assembly 21 is operated to grind the tool. In this mode, after the grinding rod assembly reaches the required angle by adjusting the height of the angle block 66, the angle wheel is not locked, and the height is operated by the angle block always leaning against the threaded rotating block 51. The grinding operation in this mode can be more flexible, but the consistency effect is lower than that in mode 1.

[0048] Mode three: Adjust the support height of the support assembly 5 to adjust the angle of the grinding rod assembly 21. After the angle is adjusted, lock the angle wheel 67 to fix the angle, and operate the grinding rod assembly 21 to grind the tool. During the grinding process, the angle block 66 moves up and down on the support body 4 to ensure a consistent grinding angle. Compared with mode one, this mode provides another angle adjustment method.

[0049] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended only as examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations and modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. Fixed angle knife sharpener, characterized by: The invention comprises a support body (4), an angle adjustment mechanism (6) and a grinding mechanism (2); the angle adjustment mechanism (6) comprises an angle block (66), an angle wheel (67) and an angle fixing assembly; the angle block (66) is mounted on the support body (4); the angle block (66) can rotate and move up and down; the angle wheel (67) is connected to the angle block (66); the angle wheel (67) can rotate; the angle wheel (67) after the angle is adjusted by rotation is fixed by the angle fixing assembly; the grinding mechanism (2) comprises a grinding rod assembly (21); the grinding rod assembly (21) is connected to the angle wheel (67); when grinding, the angle of the grinding rod assembly (21) is adjusted by rotating the angle wheel (67); the angle is fixed after the adjustment is completed; during the grinding process, the angle block (66) moves up and down on the support body (4) to ensure a consistent grinding angle.

2. The fixed-angle knife sharpener according to claim 1, characterized in that: The angle fixing assembly comprises an angle hole cover plate (61) and an angle latch (62); the angle hole cover plate (61) is provided with a plurality of angle holes (64); the angle wheel (67) is provided with a plurality of positioning holes (69); the angle latch (62) is inserted into the angle holes (64) and the positioning holes (69) to fix the angle of the angle wheel (67).

3. The fixed-angle knife sharpener according to claim 1 or 2, characterized in that: The angle fixing assembly further comprises an angle locking member (65), and the angle locking member (65) can press against the angle wheel (67). After the angle wheel (67) is adjusted in angle, the angle locking member (65) is used to press against the angle wheel (67) to achieve fixation.

4. The fixed-angle knife sharpener according to claim 3, characterized in that: The angle locking member (65) is a locking screw, and at least two groups of the locking screws are provided. The locking screws are installed on the angle block (66).

5. The fixed-angle knife sharpener according to claim 3, characterized in that: The grinding rod assembly (21) is capable of moving along the axial direction of the grinding rod assembly (21) on the angle wheel (67).

6. The fixed-angle knife sharpener according to claim 4 or 5, characterized in that: The support body (4) is an axis body, and the angle block (66) can move up and down along the axis body and rotate around the axis body.

7. The fixed-angle knife sharpener according to claim 5, characterized in that: The fixed-angle knife sharpener further comprises a height-adjusting support assembly (5), which is used to support the angle block (66) so that the lowest point of the angle block (66) is kept at this height position.

8. The fixed-angle knife sharpener according to claim 7, characterized in that: The height-adjusting support assembly (5) comprises a screw hole seat (52) and a threaded rotating block (51), and the support height is adjusted by rotating the threaded rotating block (51).

9. The fixed-angle knife sharpener according to claim 8, characterized in that: The screw hole seat (52) and the threaded rotating block (51) are both provided with fixing screws (53).

10. The fixed-angle knife sharpener according to claim 1, characterized in that: The fixed-angle knife sharpener further comprises a knife holder (3), which is used for clamping the knife to be sharpened.

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