Knife sharpener and knife sharpening method

Abstract

The present invention discloses a knife sharpening mechanism and a knife sharpening method with a simple structure, which can grind a knife blade consistently and evenly with good grinding effect. The mechanism comprises: a base, on which a tool clamping mechanism is provided, and the tool clamping mechanism is used to clamp a knife; a knife sharpening assembly, which is provided on the base above the tool clamping mechanism and is connected to a linkage member and is driven by the linkage member to move in a circular manner; the movement trajectory of the knife sharpening assembly comprises a knife sharpening section and a spacing section, in which the knife sharpening portion of the knife sharpening assembly contacts the knife blade and continuously moves along the knife blade path to grind the knife blade, and in the spacing section, the knife sharpening portion of the knife sharpening assembly is spaced apart from the knife blade to break away from contact. The present invention relates to the technical field of knife sharpeners.

Description

Technical Field

[0001] The present invention relates to the technical field of knife sharpeners, and more specifically to a knife sharpener and a knife sharpening method. Background Art

[0002] With the development of the times and the improvement of people's living standards, traditional daily tools in the kitchen can no longer meet people's daily needs. Traditional whetstones and knife sharpeners are large and unsightly, and are less popular in modern families. Moreover, most people do not know how to sharpen knives. Therefore, when household kitchen knives become blunt, it is difficult to find a place to sharpen them, or the wrong sharpening method is used, resulting in failure to achieve the desired sharpness. In addition, some knives have excessive edge wear due to improper use, and the knife sharpeners that come with the knife sharpening stand on the market cannot quickly repair the edge, causing certain troubles for people. The result is that they have to change knives or find someone to sharpen them, which not only brings trouble but also increases the cost of living. To solve the above problems, some electric-driven automatic knife sharpeners have emerged.

[0003] The existing automatic knife sharpener generally adopts the following method of sharpening: after the knife is placed in the sharpener, the sharpening part contacts the blade of the knife and is driven to move back and forth along the blade path to sharpen the blade. Since the sharpening part is in contact with the blade and moves back and forth in two directions along the blade path to sharpen the blade, the blade path changes and the force exerted by the sharpening part and the contact area with the sharpening part may be inconsistent, which often leads to the problem of over-grinding or under-grinding.

[0004] To solve the above problem, some knife sharpeners that sharpen the blade along a single direction of the blade path have emerged, such as a knife sharpening device disclosed in Publication No. CN 216299028 U. However, this knife sharpening device has problems such as a complex structure and high production cost, and is not suitable for widespread use. Summary of the Invention

[0005] In view of the shortcomings and defects of the existing technology, a knife sharpening mechanism and a knife sharpening method are provided, which have a simple structure and can grind the knife edge consistently and evenly with good grinding effect.

[0006] A knife sharpener, comprising:

[0007] A base, wherein a tool clamping mechanism is provided on the base, and the tool clamping mechanism is used to clamp the tool;

[0008] A knife sharpening assembly is provided on a base above the tool clamping mechanism and is connected to a linkage member, and is driven by the linkage member to move in a circular motion;

[0009] The movement track of the sharpening assembly includes a sharpening section and a spacing section.

[0010] In the sharpening section, the sharpening portion of the sharpening assembly contacts the knife edge and continuously moves along the edge path to sharpen the edge.

[0011] In the interval section, the sharpening portion of the sharpening assembly is spaced apart from the blade of the knife so as to be out of contact;

[0012] The linkage member is a conveyor belt, the front end of which is sleeved on a driving wheel and the rear end of which is sleeved on a driven wheel, forming a linkage member with an elliptical ring structure;

[0013] The cutter is placed below the conveyor belt, the moving track of the cutter sharpening assembly between the driving wheel and the lower part of the driven wheel is the cutter sharpening section, and the moving track of the cutter sharpening assembly between the upper part of the driving wheel and the driven wheel is the interval section;

[0014] The knife sharpening part comprises two knife sharpening wheels, the two knife sharpening wheels are arranged on the same rotating shaft, and a knife sharpening space for the knife blade to extend into is formed between the two knife sharpening wheels.

[0015] After adopting the above structure, the knife sharpener of the present invention has the following advantages compared with the prior art:

[0016] During the sharpening operation, the tool to be sharpened is first clamped by the tool clamping mechanism, with the blade of the tool to be sharpened facing upwards towards the sharpening assembly;

[0017] The moving track of the sharpening assembly comprises a sharpening section and a spacing section, wherein in the spacing section, the sharpening portion of the sharpening assembly is spaced apart from the cutting edge of the knife so as to be out of contact;

[0018] In the sharpening section, the sharpening portion of the sharpening assembly contacts the blade of the tool, and the sharpening portion contacts the blade and moves along a single direction of the blade path (from the tail of the blade to the front of the blade) to sharpen the blade. When the blade is sharpened multiple times along the single direction (from the tail of the blade to the front of the blade), the contact torque between the sharpening portion and the blade is relatively consistent, and the contact area is also relatively consistent during the multiple sharpening processes, so that the blade is sharpened consistently, evenly, and effectively.

[0019] In addition, the present device can move the sharpening assembly in a circular motion so that the sharpening portion can obtain a position in contact with the blade and a position out of contact. Compared with the guide rail solution, the sharpening assembly folds when moving in the reverse direction to separate the sharpening portion from the blade. The present device has the characteristics of simple structure and relatively low cost.

[0020] As an improvement of the present invention, the knife sharpening assembly includes a connecting seat and a pivot arm, the connecting seat is fixed to the outside of the conveyor belt, the connecting seat is provided with an assembly space for the front end of the pivot arm to extend into, a pin shaft is provided in the assembly space and passes through the front end of the pivot arm, and the knife sharpening portion is provided at the rear end of the pivot arm;

[0021] A torsion spring is sleeved on the pin shaft, one top stop end of the torsion spring is stopped at the connecting seat, and the other top stop end of the torsion spring is stopped at the pivot arm. The blade is in contact with the sharpening part, driving the pivot arm to rotate so that the torsion spring is pre-tightened. The torsion spring provides pre-tightening force to the pivot arm, driving the pivot arm to reverse so that the sharpening part remains in contact with the blade.

[0022] As an improvement of the present invention, two grinding wheels are rotatably connected to the rear end of the pivot arm;

[0023] The rotation axes of the two grinding wheels are inclined to the axis A of the blade. The blade enters the grinding space, and the center line B of the grinding space is inclined and staggered with the axis B of the blade. One of the grinding wheels contacts one side of the blade, and the other grinding wheel contacts the other side of the blade. The two contact positions are staggered front and back in the direction of the axis A of the blade.

[0024] As an improvement of the present invention, the driving wheel and the driven wheel are both rotatably connected to the base, the base is provided with a first limiting groove of an annular structure according to the movement trajectory, the connecting seat is provided with a first limiting guide post, and the first limiting guide post extends into the first limiting groove;

[0025] The base is provided with a second limit groove according to the moving trajectory, and a second limit guide column is provided at the tail end of the pivot arm. The second limit guide column extends into the second limit groove. The second limit groove is provided with a floating section with an increased groove spacing corresponding to the grinding section. The second limit guide column can float up and down in the floating section along with the rotation of the pivot arm.

[0026] As an improvement of the present invention, the tool clamping mechanism includes a clamping block, the number of the clamping blocks is at least two, the two clamping blocks are arranged opposite to each other on the base, the two clamping blocks are arranged opposite to each other on the left and right sides of the base, and a gap is formed between the two clamping blocks for the tool to penetrate;

[0027] A first nut is provided on the upper end of the clamping block at the left position, and the adjusting screw is provided with a first thread segment adapted to the first nut;

[0028] A second nut is provided at the upper end of the clamping block on the right side. The adjusting screw passes through the first nut and extends to pass through the second nut. A second thread segment that is adapted to the second nut is provided on the adjusting screw. The second thread segment and the first thread segment adopt a positive and negative thread structure.

[0029] As an improvement of the present invention, the base is provided with a guide assembly, which includes a slide groove. The slide groove is located below the two clamping blocks and extends along the moving direction of the clamping blocks. The bottoms of the two clamping blocks are respectively provided with sliders that fit into the slide groove.

[0030] As an improvement of the present invention, a through slot is provided on the base, the tail end of the through slot is opposite to the front end of the gap, and an inwardly extending baffle is provided at the front end of the through slot, and the baffle forms a blocking fit with the front end of the tool handle;

[0031] The base is provided with a guide groove, the tail end of the guide groove is communicated with the front end of the through groove, and the front end is extended away from the tail end.

[0032] As an improvement of the present invention, a tightening assembly is provided on the base, and the tightening assembly includes a top plate, which is hinged at the front end of the guide groove, and an elastic member is provided on the base, which drives the top plate to flip upward so that the top plate is pressed against the back of the tool.

[0033] A knife sharpening method, comprising using any one of the knife sharpeners described above, wherein the knife sharpening method comprises the following steps:

[0034] SS01. Clamp the tool to be sharpened by the tool clamping mechanism, with the cutting edge facing upwards.

[0035] SS02, control the linkage to rotate, and the rotation of the linkage drives the sharpening assembly to switch back and forth between the sharpening section and the interval section;

[0036] SS03, wherein, in the sharpening section, the sharpening portion of the sharpening assembly contacts the blade and continuously moves along the path of the blade to sharpen the blade; in the interval section, the sharpening portion of the sharpening assembly is spaced apart from the blade to break away from contact;

[0037] SS04, after the blade is sharpened to meet the requirements, the control linkage drives the sharpening assembly into the interval section;

[0038] SS05. Remove the polished tool from the tool holding mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural schematic diagram of the present invention.

[0040] Figure 2 It is a schematic structural diagram of the knife sharpening assembly of the present invention.

[0041] Figure 3 It is a schematic diagram of the position structure of the first limiting groove and the second limiting groove of the present invention.

[0042] Figure 4 The present invention Figure 3 A magnified schematic diagram of the structure in the middle.

[0043] Figure 5 It is a schematic structural diagram of a knife sharpening portion of the present invention.

[0044] Figure 6 The present invention Figure 5 The structure at point B is enlarged, and a schematic diagram of the structure after the tool and the sharpening space are adapted is shown.

[0045] Figure 7 It is a structural schematic diagram of the tool clamping mechanism of the present invention.

[0046] Figure 8 It is a schematic structural diagram of the tool clamping mechanism of the present invention in an exploded state of its components.

[0047] Figure 9 It is a schematic structural diagram of the present invention in which the base is partially cut away to reveal the clamping block.

[0048] Figure 10 It is a structural schematic diagram of the through groove and the guide groove of the present invention.

[0049] Figure 11 It is a schematic diagram of a half-section structure of a part of the base of the present invention.

[0050] Figure 12 It is a schematic diagram of an implementation of the present invention.

[0051] Figure 1: Sharpening assembly; 1.1 Sharpening unit; 1.11 Sharpening space; 1.2 Connecting seat; 1.21 First limit guide post; 1.3 Pivot arm; 1.31 Second limit guide post; 1.211 Pin; 1.212 Torsion spring; 2 Linkage; 2.1 Driving wheel; 2.2 Driven wheel; 3 Sharpening section; 4 Spacer section; 5 Motor; 6 Base; 6.1 First limit slot ;6.2, second limit groove; 7, floating section; 8, tool; 9, clamping block; 9.1, gap; 9.2, first nut; 9.3, second nut; 10, guide assembly; 10.1, slide groove; 10.2, slider; 11, adjusting screw; 11.1, first threaded section; 11.2, second threaded section; 11.3, knob; 12, through groove; 12.1, baffle; 13, guide groove; 14, top plate. DETAILED DESCRIPTION

[0052] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0053] See also Figure 1-12 A knife sharpener comprising:

[0054] A base 6 , wherein a tool clamping mechanism is provided on the base 6 , and the tool clamping mechanism is used to clamp a tool 8 ;

[0055] The sharpening assembly 1 is connected to the linkage member 2 and is driven by the linkage member 2 to move in a circular motion;

[0056] The movement track of the knife sharpening assembly 1 includes a knife sharpening section 3 and a spacing section 4.

[0057] In the sharpening section 3, the sharpening portion 1.1 of the sharpening assembly 1 contacts the edge of the knife 8 and continues to move along the edge path to sharpen the edge.

[0058] In the interval section 4, the sharpening portion 1.1 of the sharpening assembly 1 is spaced apart from the edge of the knife 8 so as to be out of contact;

[0059] The linkage member 2 is a conveyor belt, the front end of which is sleeved on a driving wheel 2.1 and the rear end of which is sleeved on a driven wheel 2.2, forming a linkage member 2 with an elliptical ring structure;

[0060] The cutter 8 is placed below the conveyor belt, the moving track of the cutter sharpening assembly 1 between the driving wheel 2.1 and the driven wheel 2.2 is the cutter sharpening section 3, and the moving track of the cutter sharpening assembly 1 between the driving wheel 2.1 and the driven wheel 2.2 is the interval section 4.

[0061] The sharpening part 1.1 includes two sharpening wheels, which are arranged on the same rotation axis, and a sharpening space 1.11 for the blade to extend into is formed between the two sharpening wheels.

[0062] After adopting the above structure, the knife sharpener of the present invention has the following advantages compared with the prior art: during the knife sharpening operation, the knife to be sharpened 8 is first clamped by the tool clamping mechanism, and the blade of the knife to be sharpened 8 is upwardly directed toward the knife sharpening assembly 1;

[0063] The movement trajectory of the sharpening assembly 1 comprises a sharpening section 3 and a spacing section 4, wherein in the spacing section 4, the sharpening portion 1.1 of the sharpening assembly 1 is spaced apart from the blade of the knife 8 so as to be out of contact;

[0064] In the sharpening section 3, the sharpening portion 1.1 of the sharpening assembly 1 contacts the blade of the knife 8. The sharpening portion 1.1 contacts the blade and moves along a single direction of the blade path (from the tail of the blade to the front of the blade) to sharpen the blade. When the blade is sharpened multiple times along the single direction (from the tail of the blade to the front of the blade), the contact torque between the sharpening portion 1.1 and the blade is relatively consistent, and the contact area is also relatively consistent during the multiple sharpening processes, so that the blade is sharpened consistently, evenly, and effectively.

[0065] In addition, the present device can move the sharpening assembly 1 in a circular manner so that the sharpening portion 1.1 can obtain a position in contact with the blade and a position out of contact. Compared with the guide rail solution, the sharpening assembly 1 folds when moving in the reverse direction to separate the sharpening portion 1.1 from the blade. This device has the characteristics of simple structure and relatively low cost.

[0066] A conveyor belt is used as a linkage member 2, which is sleeved on a driving wheel 2.1 and a driven wheel 2.2. (The linkage member 2 can also be a chain or other structure capable of circular conveying). The driving wheel 2.1 and the driven wheel 2.2 act to form an elliptical ring structure with upper and lower ends separated. The lower end of the conveyor belt is connected to the sharpening assembly 1 and has a sharpening section 3, and the upper end of the conveyor belt is connected to the sharpening assembly 1 and has a spacing section 4.

[0067] When sharpening the knife, the knife 8 is placed under the conveyor belt, with the blade close to the lower end of the conveyor belt, and the path of the blade corresponds to the length direction of the conveyor belt. When the sharpening assembly 1 moves to the sharpening section 3, the sharpening part 1.1 automatically contacts the blade to sharpen it.

[0068] When the sharpening assembly 1 moves to the interval section 4, the sharpening part 1.1 can automatically separate from the blade to form a gap. The structure is simple, with few parts, and the device operates stably and reliably.

[0069] As an improvement of the present invention, the sharpening assembly 1 includes a connecting seat 1.2 and a pivot arm 1.3. The connecting seat 1.2 is fixed to the outside of the conveyor belt. The connecting seat 1.2 is provided with an assembly space for the front end of the pivot arm 1.3 to extend therein. A pin 1.211 is disposed in the assembly space and extends through the front end of the pivot arm 1.3. The sharpening unit 1.1 is disposed at the rear end of the pivot arm 1.3. After the above improvement, the front end of the pivot arm 1.3 is hingedly connected to the connecting seat 1.2, and the sharpening unit 1.1 is disposed at the rear end of the pivot arm 1.3. The pivot arm 1.3 can rotate clockwise or counterclockwise along the pin 1.211 to raise or lower the height of the sharpening unit 1.1. When the height of the blade path changes, the sharpening unit 1.1 can rise and fall as it moves along the blade path, so that the sharpening unit 1.1 maintains effective and consistent contact with the blade, thereby improving the sharpening effect of the blade.

[0070] As an improvement to the present invention, a torsion spring 1.212 is sleeved on the pin 1.211. One of the top stop ends of the torsion spring 1.212 abuts against the connecting seat 1.2, and the other top stop end of the torsion spring 1.212 abuts against the pivot arm 1.3. When the blade contacts the sharpening portion 1.1, the pivot arm 1.3 is driven to rotate, causing the torsion spring 1.212 to be pre-tightened. The torsion spring 1.212 provides a pre-tightening force to the pivot arm 1.3, driving the pivot arm 1.3 to reverse, so that the sharpening portion 1.1 maintains contact with the blade. With this improvement, when the pivot arm 1.3 rotates, the torsion spring 1.212 is pre-tightened. The pre-tightening force inhibits the rotation of the pivot arm 1.3, allowing the sharpening portion 1.1 to maintain effective and consistent contact with the blade, further improving the sharpening effect of the sharpening portion 1.1 on the blade.

[0071] As an improvement of the present invention, two sharpening wheels are rotatably connected to the rear end of the pivot arm 1.3; the rotation axes of the two sharpening wheels are arranged obliquely to the axis A of the blade, and the blade enters the sharpening space 1.11. The center line B of the sharpening space 1.11 and the axis B of the blade are obliquely staggered, and one sharpening wheel contacts one side of the blade, and the other sharpening wheel contacts the other side of the blade, and the two contact positions are staggered front and back in the direction of the axis A of the blade. After the above improvement, after the blade is extended into the sharpening space 1.11, the two contact positions of the two sharpening wheels and the blade are staggered front and back in the direction of the axis A of the blade. When adapting to knives 8 with different blades, the blade and the sharpening wheel can effectively contact each other, thereby improving the sharpening effect and having high applicability.

[0072] In addition, when sharpening the knife, the relative positions of the two side surfaces of the blade will not contact the sharpening wheel at the same time, avoiding over-grinding and causing excessive thinning of the blade, making the sharpening operation more reliable.

[0073] As an improvement of the present invention, the driving wheel 2.1 is driven to rotate by the motor 5, and the driven wheel 2.2 is connected to the base 6 through a sliding seat. The sliding seat and the base 6 are connected by bolt fasteners. After loosening the bolt fasteners, the sliding seat that can slide laterally can adjust the distance between the driven wheel 2.2 and the driving wheel 2.1 to adjust the tension of the conveyor belt.

[0074] After the above improvements, the motor 5 drives the driving wheel 2.1 to rotate to drive the conveyor belt to rotate, realizing the automated knife sharpening operation, which is convenient to use and has the characteristics of short sharpening time; the conveyor belt can be tensioned, which is convenient for users to maintain.

[0075] As an improvement of the present invention, the driving wheel 2.1 and the driven wheel 2.2 are both rotatably connected to the base 6, and the base 6 is provided with a first limiting groove 6.1 of an annular structure according to the movement trajectory, and the connecting seat 1.2 is provided with a first limiting guide post 1.21, and the first limiting guide post 1.21 extends into the first limiting groove 6.1. In the above improvement, the groove spacing of the first limiting groove 6.1 is slightly larger than the diameter of the first limiting guide post 1.21. When the conveyor belt rotates and drives the connecting seat 1.2 to move forward, the cooperation between the first limiting groove 6.1 and the first limiting guide post 1.21 can limit the connecting seat 1.2 to a reasonable movement trajectory, and then limit the sharpening assembly 1 to an elliptical ring-shaped movement trajectory. Even if the conveyor belt becomes loose, the sharpening assembly 1 will not be dislocated, thereby improving the reliability of the device operation and extending the service life.

[0076] As an improvement of the present invention, the base 6 is provided with a second limiting groove 6.2 according to the moving trajectory, and the tail end of the pivot arm 1.3 is provided with a second limiting guide column 1.31, and the second limiting guide column 1.31 extends into the second limiting groove 6.2. The second limiting groove 6.2 is provided with a floating section 7 with an increased groove spacing corresponding to the sharpening section 3, and the second limiting guide column 1.31 can float up and down in the floating section 7 along with the rotation of the pivot arm 1.3. The upper end portion of the second limiting groove 6.2 is provided with a groove spacing slightly larger than the second limiting column corresponding to the interval section 4. When the sharpening assembly 1 moves to the interval section 4, the second limiting groove 6.2 cooperates with the second limiting column to effectively prevent the pivot arm 1.3 from rotating. In the interval section 4, the pivot arm 1.3 and the sharpening part 1.1 will not move excessively, thereby improving the stability and reliability of the operation of the lifting device.

[0077] The lower end portion of the second limit groove 6.2 serves as a floating section 7, and the corresponding sharpening section 3 is set to a groove spacing much larger than the second limit groove. When the height of the blade path changes, the floating section 7 can allow the pivot arm 1.3 to rotate until the sharpening part 1.1 effectively contacts the blade, further improving the applicability of the device and the reliability of its operation.

[0078] The tool clamping mechanism includes a clamping block 9, and the number of the clamping blocks 9 is at least two. The two clamping blocks 9 are arranged opposite to each other on the base 6. The two clamping blocks 9 are arranged opposite to each other on the left and right sides of the base 6, and a gap 9.1 is formed between the two clamping blocks 9 for the tool 8 to penetrate.

[0079] The upper end of the clamping block 9 at the left side is provided with a first nut 9.2, and the adjusting screw 11 is provided with a first threaded section 11.1 adapted to the first nut 9.2;

[0080] A second nut 9.3 is provided on the upper end of the clamping block 9 on the right side. The adjusting screw 11 passes through the first nut 9.2 and then extends to pass through the second nut 9.3. The adjusting screw 11 is provided with a second thread segment 11.2 that is compatible with the second nut 9.3. The second thread segment 11.2 and the first thread segment 11.1 adopt a positive and negative thread structure. When it is necessary to clamp the tool 8, first rotate the adjusting screw 11 to drive the clamping block 9 to move away from the other clamping block 9 in a straight line to increase the gap 9.1 between the two clamping blocks 9. Further, insert the tool 8 into the gap 9.1, and rotate the adjusting screw 11 to drive the clamping block 9 to move closer to the other clamping block 9 in a straight line until the tool 8 is stably clamped on the inner side of the clamping block 9.

[0081] By rotating the adjusting screw 11, the clamping block 9 can be driven to move linearly to adjust the size of the gap 9.1. It has the characteristics of simple structure, easy operation and reliable operation.

[0082] (Different from the traditional hinged opening and closing clamping part) The clamping block 9 has a large range of relative movement and a wide range of adjustment for the size of the gap 9.1, which can meet the requirements of clamping different tools 8 and improve the applicability of the device.

[0083] As an improvement to the present invention, the two clamping blocks 9 are positioned opposite each other on the base 6. A first nut 9.2 is provided at the upper end of the left clamping block 9, and the adjusting screw 11 is provided with a first threaded section 11.1 that mates with the first nut 9.2. This improvement, through the mating of the first nut 9.2 at the upper end of the clamping block 9 and the first threaded section 11.1, provides a simple and rational structural layout and reliable operation.

[0084] As an improvement of the present invention, a second nut 9.3 is provided on the upper end of the clamping block 9 at the right position, and the adjusting screw 11 extends through the first nut 9.2 and then passes through the second nut 9.3. The adjusting screw 11 is provided with a second thread segment 11.2 adapted to the second nut 9.3, and the second thread segment 11.2 and the first thread segment 11.1 adopt a positive and negative wire structure. After the above improvement, by setting the first thread segment 11.1 and the second thread segment 11.2 of the positive and negative wire structure, when the adjusting screw 11 is rotated, the two clamping blocks 9 can be driven to move linearly close to each other or move linearly away from each other at the same time. The two clamping blocks 9 act simultaneously to adjust the gap 9.1 quickly, and the two clamping blocks 9 can clamp the tool 8 together during movement, which has the characteristics of large clamping torque and high clamping stability. The tool 8 with a stable position can be polished evenly, consistently and with better effect during the polishing process.

[0085] As an improvement to the present invention, the base 6 is provided with a guide assembly 10, which includes a slide 10.1 located below the two clamping blocks 9 and extending along the direction of movement of the clamping blocks 9. The bottoms of the two clamping blocks 9 are each provided with a slider 10.2 that fits within the slide 10.1. With this improvement, the clamping blocks 9, through the cooperation of the slider 10.2 and the slide 10.1, can move the two clamping blocks 9 linearly toward each other or away from each other when the adjustment screw 11 is rotated, resulting in a simple structure and reliable operation.

[0086] Both the slide groove 10.1 and the slider 10.2 can adopt a "T" structure, which can improve the stability of the connection between the slider 10.2 and the slide groove 10.1, thereby improving the stability of the movement of the clamping block 9.

[0087] As an improvement of the present invention, a knob 11.3 connected to the adjusting screw 11 is provided on the outside of the base 6. With the above improvement, the user can rotate the adjusting screw 11 by rotating the knob 11.3, which is convenient to use. In addition, the outside of the knob 11.3 can be coated with soft rubber or etched with a non-slip texture to further enhance the user experience.

[0088] As an improvement to the present invention, a through slot 12 is provided on the base 6, the rear end of the through slot 12 being opposite the front end of the gap 9.1. A baffle 12.1 extending inward is provided at the front end of the through slot 12, and the baffle 12.1 forms a blocking engagement with the front end of the handle of the knife 8. With this improvement, when using the knife, the user inserts the tip of the knife 8 through the opening at the rear end of the base 6, and then through the gap 9.1 and through slot 12 in sequence. After the front end of the handle abuts against the baffle 12.1, the user places the knife 8 further in, placing the knife 8 in a suitable position.

[0089] Further rotating the adjusting screw 11 drives the clamping block 9 to clamp the handle of the tool 8. The clamping block 9 clamps the tool 8 by clamping the tool handle. Since the tool handle is generally the thickest part of the tool 8, the clamping block 9 can apply stable pressure for clamping, making the tool 8 more stable when clamped.

[0090] As an improvement of the present invention, a guide groove 13 is provided on the base 6. The rear end of the guide groove 13 is connected to the front end of the through groove 12, and the front end extends away from the rear end. After the above improvement, the blade of the tool 8 is inserted into the guide groove 13. The inner wall of the guide groove 13 acts as a limiter on both sides of the blade. When the inner wall of the guide groove 13 contacts the side of the blade, it can limit the lateral swing of the tool 8, further improving the stability of the tool 8 when it is clamped.

[0091] As an improvement to the present invention, a tightening assembly is provided on the base 6, comprising a top plate hinged to the front end of the guide slot 13. An elastic member is provided on the base 6, which forces the top plate to flip upward so that it abuts against the back of the cutter 8. With this improvement, the lower end of the top plate is hinged to the base 6, and the height of the hinge is lower than that of the guide slot 13. When the cutter 8 does not penetrate the gap 9.1, the top plate remains in a vertical position under the action of the elastic member.

[0092] When the tool 8 penetrates the gap 9.1, the tip of the tool pushes the top plate, driving the top plate to flip downward, and the elastic member is pre-tightened. At this time, under the action of the elastic member, the upper end surface of the top plate is driven to press against the back of the tool, so that the tool 8 can reduce the vertical movement, further improve the stability of the tool 8 when being clamped, and make the tool 8 receive a better grinding effect when being ground.

[0093] A knife sharpening method, comprising using any one of the knife sharpeners described above, wherein the knife sharpening method comprises the following steps:

[0094] SS01. Clamp the tool 8 to be sharpened by the tool clamping mechanism, and set the cutting edge of the tool 8 upward;

[0095] SS02, control the linkage member 2 to rotate, and the rotation of the linkage member 2 drives the sharpening assembly 1 to switch back and forth between the sharpening section 3 and the interval section 4;

[0096] SS03, wherein, in the sharpening section 3, the sharpening portion 1.1 of the sharpening assembly 1 contacts the blade and continues to move along the path of the blade to sharpen the blade; in the spacing section 4, the sharpening portion 1.1 of the sharpening assembly 1 is spaced apart from the blade of the knife 8 to break away from contact;

[0097] SS04, after the blade is sharpened to meet the requirements, the control linkage 2 drives the sharpening assembly 1 to enter the interval section 4;

[0098] SS05. Remove the polished tool 8 from the tool holding mechanism.

[0099] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the principles of the present invention are within the scope of protection of the present invention. It should be noted that improvements and modifications that do not depart from the principles of the present invention are within the scope of protection of the present invention.

Claims

1. A knife sharpener, characterized in that: include: A base (6), wherein a tool clamping mechanism is provided on the base (6), and the tool clamping mechanism is used to clamp a tool (8); A knife sharpening assembly (1), the knife sharpening assembly (1) being arranged on a base (6) above the tool clamping mechanism, and the knife sharpening assembly (1) being connected to a linkage member (2) and driven by the linkage member (2) to move in a circular motion; The movement trajectory of the knife sharpening assembly (1) includes a knife sharpening section (3) and a spacing section (4). In the sharpening section (3), the sharpening portion (1.1) of the sharpening assembly (1) contacts the edge of the knife (8) and continuously moves along the edge path to sharpen the edge. In the interval section (4), the sharpening portion (1.1) of the sharpening assembly (1) is spaced apart from the blade of the knife (8) to be out of contact; The linkage member (2) is a conveyor belt, the front end of which is sleeved on a driving wheel (2.1) and the rear end of which is sleeved on a driven wheel (2.2), forming a linkage member (2) with an elliptical ring structure; The cutter (8) is placed below the conveyor belt, the movement trajectory of the sharpening assembly (1) between the driving wheel (2.1) and the driven wheel (2.2) below serves as the sharpening section (3), and the movement trajectory of the sharpening assembly (1) between the driving wheel (2.1) and the driven wheel (2.2) above serves as the spacing section (4); The sharpening part (1.1) comprises two sharpening wheels, the two sharpening wheels are arranged on the same rotating axis, and a sharpening space (1.11) is formed between the two sharpening wheels for the blade to extend into.

2. A knife sharpener according to claim 1, characterized in that: The sharpening assembly (1) comprises a connecting seat (1.2) and a pivot arm (1.3); the connecting seat (1.2) is fixed to the outside of the conveyor belt; the connecting seat (1.2) is provided with an assembly space for the front end of the pivot arm (1.3) to extend into; a pin shaft (1.211) passing through the front end of the pivot arm (1.3) is provided in the assembly space; and the sharpening portion (1.1) is provided at the rear end of the pivot arm (1.3); A torsion spring (1.212) is sleeved on the pin shaft (1.211), one top stop end of the torsion spring (1.212) is stopped against the connecting seat (1.2), and the other top stop end of the torsion spring (1.212) is stopped against the pivot arm (1.3). The blade contacts the sharpening portion (1.1), driving the pivot arm (1.3) to rotate so that the torsion spring (1.212) is pre-tightened. The torsion spring (1.212) supplies a pre-tightening force to the pivot arm (1.3), driving the pivot arm (1.3) to reverse so that the sharpening portion (1.1) remains in contact with the blade.

3. A knife sharpener according to claim 2, characterized in that: Two grinding wheels are rotatably connected to the tail end of the pivot arm (1.3); The rotation axes of the two grinding wheels are arranged obliquely to the axis A of the blade, the blade enters the grinding space (1.11), the center line B of the grinding space (1.11) and the axis B of the blade are obliquely staggered, one of the grinding wheels contacts one side of the blade, and the other grinding wheel contacts the other side of the blade, and the two contact positions are staggered in the front and rear positions in the direction of the axis A of the blade.

4. A knife sharpener according to claim 3, characterized in that: The driving wheel (2.1) and the driven wheel (2.2) are both rotatably connected to the base (6); a first limiting groove (6.1) of an annular structure is provided on the base (6) according to the movement trajectory; the connecting seat (1.2) is provided with a first limiting guide column (1.21); the first limiting guide column (1.21) extends into the first limiting groove (6.1); The base (6) is provided with a second limiting groove (6.2) having a structure according to the moving track, and the tail end of the pivot arm (1.3) is provided with a second limiting guide column (1.31), the second limiting guide column (1.31) extends into the second limiting groove (6.2), and the second limiting groove (6.2) is provided with a floating section (7) with an increased groove spacing corresponding to the sharpening section (3), and the second limiting guide column (1.31) can float up and down in the floating section (7) along with the rotation of the pivot arm (1.3).

5. The knife sharpener according to claim 1, characterized in that: The tool clamping mechanism includes a clamping block (9), the number of the clamping blocks (9) is at least two, the two clamping blocks (9) are arranged opposite to each other on the base (6), the two clamping blocks (9) are arranged opposite to each other on the left and right sides of the base (6), and a gap (9.1) is formed between the two clamping blocks (9) for the tool (8) to penetrate; A first nut (9.2) is provided at the upper end of the clamping block (9) at the left side, and a first threaded section (11.1) adapted to the first nut (9.2) is provided on the adjusting screw (11); A second nut (9.3) is provided at the upper end of the clamping block (9) at the right position. The adjusting screw (11) passes through the first nut (9.2) and then extends to pass through the second nut (9.3). A second thread segment (11.2) adapted to the second nut (9.3) is provided on the adjusting screw (11). The second thread segment (11.2) and the first thread segment (11.1) adopt a positive and negative thread structure.

6. A knife sharpener according to claim 5, characterized in that: The base (6) is provided with a guide assembly (10), and the guide assembly (10) includes a slide groove (10.1). The slide groove (10.1) is located below the two clamping blocks (9) and extends along the moving direction of the clamping blocks (9). The bottoms of the two clamping blocks (9) are respectively provided with sliders (10.2) that fit into the slide groove (10.1).

7. The knife sharpener according to claim 5, characterized in that: A through slot (12) is provided on the base (6), the rear end of the through slot (12) is opposite to the front end of the gap (9.1), and an inwardly extending baffle (12.1) is provided at the front end of the through slot (12), and the baffle (12.1) forms a blocking fit with the front end of the handle of the tool (8); A guide groove (13) is provided on the base (6), the tail end of the guide groove (13) is communicated with the front end of the through groove (12), and the front end is extended away from the tail end.

8. A knife sharpener according to claim 7, characterized in that: The base (6) is provided with a tightening assembly, the tightening assembly comprising a top plate, the top plate being hinged at the front end of the guide groove (13), and an elastic member is provided on the base (6), the elastic member driving the top plate to flip upward so that the top plate is pressed against the back of the tool (8).

9. A knife sharpening method, characterized in that: The method comprises using the knife sharpener according to any one of claims 1 to 8, wherein the knife sharpening method comprises the following steps: SS01, clamping the tool (8) to be sharpened by the tool clamping mechanism, and setting the blade of the tool (8) upward; SS02, controlling the linkage member (2) to rotate, the linkage member (2) rotating drives the sharpening assembly (1) to switch back and forth between the sharpening section (3) and the spacing section (4); SS03, wherein, in the sharpening section (3), the sharpening portion (1.1) of the sharpening assembly (1) contacts the blade and continuously moves along the path of the blade to sharpen the blade; in the spacing section (4), the sharpening portion (1.1) of the sharpening assembly (1) is spaced apart from the blade of the tool (8) to be out of contact; SS04, after the blade is sharpened to meet the requirements, the control linkage (2) drives the sharpening assembly (1) to enter the interval section (4); SS05. Remove the polished tool (8) from the tool holding mechanism.

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