Angle-adjustable rolling fixed-angle knife sharpener

Abstract

The utility model provides a rolling fixed-angle knife sharpener with an adjustable angle. The rolling fixed-angle knife sharpener comprises a positioning assembly and a knife stone assembly. The positioning assembly comprises a base and a positioning plate; the positioning plate is hinged to the base so that the positioning plate can rotate relative to the base to change the included angle between the positioning plate and the base. An angle adjusting mechanism used for adjusting the rotating angle of the positioning plate is arranged between the base and the positioning plate. The angle adjusting mechanism comprises an adjusting block and a connecting rod; the adjusting block is rotatably mounted on the base, and a spiral conical surface which spirally ascends around the rotating axis of the adjusting block is arranged on the adjusting block; the first end of the connecting rod is fixedly connected with the positioning plate, and the second end of the connecting rod is erected on the spiral conical surface and moves along the spiral conical surface to drive the positioning plate to rotate when the adjusting block rotates. According to the positioning assembly, the included angle between the positioning plate and the base can be adjusted through the angle adjusting mechanism, the cutter can be attached and positioned so as to be matched with the knife stone assembly for grinding, the angle can be adjusted according to the grinding requirements of different cutters, and the application range is wide.

Description

Technical Field

[0001] This utility model relates to an adjustable-angle rolling fixed-angle grinder. Background Technology

[0002] Chinese utility model patent CN222269586U discloses a novel knife sharpener in which the knife is positioned by positioning bevels at different angles on a positioning block, and then sharpened in conjunction with a rotating or translating sharpening disc. Smaller angles result in a sharper blade, while larger angles allow for faster sharpening. When sharpening the knife, one can first perform rapid rough sharpening on the larger angled bevels, and then switch to the smaller angled bevels for fine sharpening. However, the number of positioning bevels that can be set on the positioning block is limited, restricting its applicability. Furthermore, switching between different bevels requires repositioning, which is cumbersome and affects sharpening efficiency and effectiveness; frequent angle switching also increases the risk of injury to the user. In addition, since the positioning bevels are fixed to the steel part of the knife by magnets, each positioning bevel requires a magnet, resulting in low processing efficiency and high cost. Utility Model Content

[0003] The purpose of this invention is to provide an adjustable-angle rolling fixed-angle sharpener, comprising a positioning component and a sharpening stone component; the positioning component includes a base and a positioning plate; the positioning plate is hinged to the base so that the positioning plate can rotate relative to the base to change the included angle with the base; an angle adjustment mechanism for adjusting the rotation angle of the positioning plate is provided between the base and the positioning plate; the angle adjustment mechanism includes an adjustment block and a connecting rod; the adjustment block is rotatably mounted on the base, and the adjustment block has a spiral conical surface that spirals upward around its rotation axis; the first end of the connecting rod is fixed to the positioning plate, and the second end of the connecting rod rests on the spiral conical surface and moves along the spiral conical surface when the adjustment block rotates, thereby driving the positioning plate to rotate.

[0004] In use, when the adjusting block rotates forward, the second end of the connecting rod moves upward along the spiral cone surface, causing its first end to move downward and drive the positioning plate to rotate downward; when the adjusting block rotates in the opposite direction, the second end of the connecting rod moves downward along the spiral cone surface, causing its first end to move upward and drive the positioning plate to rotate upward. That is, the connecting rod acts as a lever.

[0005] The positioning component of this utility model can adjust the angle between the positioning plate and the base through the angle adjustment mechanism, so that the tool can be positioned against it and used in conjunction with the whetstone component for grinding. The angle can be adjusted according to the grinding requirements of different tools, and it has a wide range of applications. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the structure of this utility model.

[0007] Figure 2 This is a schematic diagram of the positioning component of this utility model.

[0008] Figure 3 This is a schematic diagram of the positioning component of this utility model in its initial state.

[0009] Figure 4 This is a schematic diagram of the positioning component of this utility model when adjusting the angle.

[0010] Figure 5 This is a cross-sectional view of the positioning component of this utility model in its initial state.

[0011] Figure 6 A cross-sectional view of the positioning component of this utility model when adjusting the angle.

[0012] Figure 7 This is an exploded view of the positioning component of this utility model.

[0013] Figure 8 This is a schematic diagram of the positioning component of this utility model with the outer shell removed.

[0014] Figure 9 This is a schematic diagram of the positioning component of this utility model when the outer shell is removed and the angle is adjusted.

[0015] Figure 10 This is an exploded view of the mating structure of the positioning plate and the base of this utility model.

[0016] Figure 11 This is a schematic diagram of the positioning plate of this utility model.

[0017] Figure 12 This is a schematic diagram of the structure of the adjusting block of this utility model.

[0018] Figure 13 and Figure 14 These are schematic diagrams of the whetstone assembly of this utility model from different angles.

[0019] Figure 15 and Figure 16 This is a reference diagram showing the usage state of this utility model. Detailed Implementation

[0020] The following description, in conjunction with the accompanying drawings, further illustrates the proposed solution:

[0021] See appendix Figure 1-16 An adjustable-angle rolling fixed-angle sharpener includes a positioning component 100 for positioning a cutting tool 6 against the ground and a sharpening stone component 200 for sharpening the cutting edge of the cutting tool 6; the positioning component 100 includes a base 1 and a positioning plate 2; the positioning plate 2 is hinged to the base 1 so that the positioning plate 2 can rotate relative to the base 1 to change the included angle with the base 1.

[0022] An angle adjustment mechanism for adjusting the rotation angle of the positioning plate 2 is provided between the base 1 and the positioning plate 2; the angle adjustment mechanism includes an adjustment block 3 and a connecting rod 21; the adjustment block 3 is rotatably mounted on the base 1, and the adjustment block 3 is provided with a spiral conical surface 31 that spirals upward around its rotation axis L; the first end of the connecting rod 21 is fixedly connected to the positioning plate 2, and the second end of the connecting rod 21 is placed on the spiral conical surface 31 and moves along the spiral conical surface 31 when the adjustment block 3 rotates, thereby driving the positioning plate 2 to rotate.

[0023] In use, when the adjusting block 3 rotates in the forward direction, the second end of the connecting rod 21 moves upward along the spiral conical surface 31, causing its first end to move downward and drive the positioning plate 2 to rotate downward; when the adjusting block 3 rotates in the reverse direction, the second end of the connecting rod 21 moves downward along the spiral conical surface 31, causing its first end to move upward and drive the positioning plate 2 to rotate upward. That is, the connecting rod 21 acts as a lever.

[0024] The positioning component 100 of this utility model can adjust the angle between the positioning plate 2 and the base 1 through the angle adjustment mechanism, so that the tool 6 can be positioned against it and used to grind with the whetstone component 200. The angle can be adjusted according to the grinding requirements of different tools 6, and it has a wide range of applications.

[0025] The spiral conical surface 31 is provided with multiple spaced positioning grooves 32; when the adjusting block 3 rotates at a certain angle, the second end of the connecting rod 21 falls into the corresponding positioning groove 32, which can adjust the included angle of the positioning plate 2 step by step, and the position of the tool 6 is more stable when sharpening.

[0026] In this embodiment, every time the adjusting block 3 rotates 5°, the second end of the connecting rod 21 falls into a positioning groove 32 for positioning.

[0027] Specifically, the connecting rod 21 is cylindrical, the end face of the first end of the connecting rod 21 is fixed to the positioning plate 2, the cylindrical surface of the second end of the connecting rod 21 is placed on the spiral conical surface 31, and the positioning groove 32 is an arc groove that fits the cylindrical surface of the connecting rod 21.

[0028] The positioning component 100 also includes a housing 11, which covers the base 1 and forms a receiving cavity 10 between the housing 11 and the base 1. The receiving cavity 10 is used to receive the angle adjustment mechanism to protect the angle adjustment mechanism.

[0029] The adjusting block 3 is provided with a first rotating shaft 33, and a knob 34 is rotatably mounted on the outer casing 11. The knob 34 is fixedly connected to the first rotating shaft 33. The knob 34 is designed to facilitate gripping and driving the adjusting block 3 to rotate for angle adjustment, making the angle adjustment operation simple and quick.

[0030] The bottom of the adjusting block 3 is provided with a second rotating shaft 35, and the base 1 is provided with a shaft hole 12. The second rotating shaft 35 is inserted into the shaft hole 12 and rotates with the shaft hole 12.

[0031] The first rotating shaft 33 and the second rotating shaft 35 are on the rotation axis L of the adjusting block 3.

[0032] The outer casing 11 is provided with angle scale markings 111 around the knob 34 to facilitate accurate adjustment to the corresponding angle.

[0033] The positioning plate 2 includes a positioning surface 22 for the tool 6 to abut against and a back surface opposite to the positioning surface 22. A limiting block 23 is provided on the back surface of the positioning plate 2. The limiting block 23 includes a limiting surface 231 perpendicular to the back surface of the positioning plate 2. The limiting surface 231 abuts against the base 1 when the positioning plate 2 is perpendicular to the base 1. The limiting block 23 is used to limit the rotation range of the positioning plate 2, specifically limiting the rearward rotation of the positioning plate 2. The connecting rod 21 is fixed to the limiting block 23.

[0034] The bottom side of the positioning plate 2 is connected to the end of the base 1 via a hinge shaft 24; a torsion spring 25 is sandwiched between the positioning plate 2 and the base 1 to keep the positioning plate 2 rotating in a direction perpendicular to the base 1. Specifically, the back of the positioning plate 2 is provided with a first insertion hole 251, and the end of the base 1 is provided with a second insertion hole 13. One end of the torsion spring 25 is inserted into the first insertion hole 251, and the other end is inserted into the second insertion hole 13.

[0035] The initial state of the positioning plate 2 is perpendicular to the base 1, and the torsion spring 25 is used to keep the positioning plate 2 tending to return to the initial state.

[0036] The positioning plate 2 is provided with a magnet 26 for adsorbing the cutting tool 6; the positioning plate 2 is provided with a pad 27 covering the magnet 26, and the positioning surface 22 is on the pad 27.

[0037] The whetstone assembly 200 includes a sliding seat 4 and a whetstone disc 5 rotatably mounted on the sliding seat 4. A pulley 41 is provided at the bottom of the sliding seat 4; the rotation axes of the whetstone disc 5 and the pulley 41 are parallel to each other; the sliding seat 4 is supported by the whetstone disc 5 and the pulley 41, and the whetstone disc 5 and the pulley 41 rotate synchronously when the sliding seat 4 moves in a radial direction.

[0038] Specifically, the grinding disc 5 is vertically mounted on the front end of the sliding seat 4, and the pulley 41 is mounted on the bottom rear side of the sliding seat 4. When the sliding seat 4 is moved, the pulley 41 and the grinding disc 5 can rotate synchronously. The rotating grinding disc 5 is used to grind the cutting tool 6 on the positioning assembly 100.

[0039] The sliding seat 4 includes a handle 42 for manually sliding the sliding seat 4. The edge of the grinding disc 5 is fitted with a rubber ring 51, which provides protection and cushioning when the grinding disc 5 rotates.

[0040] like Figure 15-16 As shown, when using it, first place the back of the blade 6 downwards, that is, the blade edge upwards, and place the blade surface of the blade 6 against the positioning surface 22 of the positioning plate 2 and fix it by magnetic attraction; then rotate the knob 34 of the positioning component 100 to adjust the positioning plate 2 to rotate a certain angle so that the blade 6 and the table form a suitable angle for grinding; finally, move the sliding seat 4 to make the grinding disc 5 rotate along the blade edge to grind the blade edge.

[0041] The above preferred embodiments should be regarded as illustrative examples of the embodiments of the present application. Any technical deductions, substitutions, improvements, etc. that are similar to or based on the present application should be considered within the scope of protection of this patent.

Claims

1. An angle-adjustable rolling angle-setting sharpener comprising an angle-setting assembly and a whetstone assembly; characterized in that: The positioning assembly comprises a base and a positioning plate; the positioning plate is hinged to the base so that the positioning plate can rotate relative to the base to change the included angle with the base; An angle adjusting mechanism is arranged between the base and the positioning plate to adjust the rotation angle of the positioning plate; the angle adjusting mechanism comprises an adjusting block and a connecting rod; the adjusting block is rotatably mounted on the base, and a helical taper surface is arranged on the adjusting block and spirally rises around the rotation axis of the adjusting block; the first end of the connecting rod is fixedly connected to the positioning plate, and the second end of the connecting rod is arranged on the helical taper surface and moves along the helical taper surface when the adjusting block rotates to drive the positioning plate to rotate.

2. The angle-adjustable rolling angle-setting sharpener according to claim 1, wherein: A plurality of positioning grooves are arranged on the helical taper surface at intervals; The second end of the connecting rod falls into the corresponding positioning groove when the adjusting block rotates by a certain angle.

3. The angle-adjustable rolling angle-setting sharpener according to claim 2, wherein: The positioning assembly further comprises a housing, the housing is covered on the base and forms a receiving cavity with the base, and the receiving cavity is used for accommodating the angle adjusting mechanism; A first rotation shaft part is arranged on the adjusting block, a knob is rotatably mounted on the housing, and the knob is fixedly connected to the first rotation shaft part; A second rotation shaft part is arranged on the bottom of the adjusting block, an axle hole is arranged on the base, and the second rotation shaft part is inserted into the axle hole and rotatably matched with the axle hole; The first rotation shaft part and the second rotation shaft part are on the rotation axis of the adjusting block.

4. The angle-adjustable rolling angle-setting sharpener according to claim 3, wherein: An angle scale mark is arranged around the knob on the housing.

5. The angle-adjustable rolling angle-setting sharpener according to claim 3, wherein: The positioning plate comprises a positioning surface for abutting against the tool and a back surface opposite to the positioning surface, a limiting block is arranged on the back surface of the positioning plate, and the limiting block comprises a limiting surface perpendicular to the back surface of the positioning plate; the limiting surface abuts against the base when the positioning plate is perpendicular to the base; The connecting rod is fixed on the limiting block.

6. The angle-adjustable rolling angle-setting sharpener according to claim 5, wherein: The bottom side of the positioning plate is hinged to the end of the base through a hinge shaft; a torsion spring is arranged between the positioning plate and the base.

7. The angle-adjustable rolling angle-setting sharpener according to claim 6, wherein: A magnet is arranged in the positioning plate; a gasket covering the magnet is arranged on the positioning plate, and the positioning surface is on the gasket.

8. The angle-adjustable rolling angle-setting sharpener according to any one of claims 1-7, wherein: The sharpener stone assembly comprises a sliding seat and a sharpener disc rotatably mounted on the sliding seat; A pulley is arranged on the bottom of the sliding seat; the rotation axes of the sharpener disc and the pulley are parallel to each other; the sliding seat is supported by the sharpener disc and the pulley, and the sharpener disc and the pulley synchronously rotate when the sliding seat moves along a radial direction.

9. The angle-adjustable rolling angle-setting sharpener according to claim 8, wherein: The sliding seat comprises a handle part; and a rubber ring is sleeved on the edge of the sharpener disc.

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