A sharpener

Abstract

The application discloses a sharpener, which comprises a rotating part, a guide assembly, a blade sharpening part, and a moving mechanism, wherein the guide assembly guides the rotating part to rotate along an axis A; the blade sharpening part is arranged on the rotating part; and the moving mechanism drives the rotating part to reciprocate along the extension direction of the blade part; the rotating of the rotating part can drive the blade sharpening part to approach the blade part to have a position in contact with the blade part, or drive the blade sharpening part to move away from the blade part to have a position out of contact with the blade part; and in the state that the blade sharpening part is in contact with the blade part, the rotating part moves along the extension direction of the blade part to polish the blade part; the sharpener has the characteristics of good applicability and good sharpening effect; and the application relates to the technical field of sharpener.

Description

Technical Field

[0001] This invention relates to the field of knife sharpener technology, and more specifically to a knife sharpener. Background Technology

[0002] Existing knife sharpeners are generally divided into two types: electric knife sharpeners and non-electric knife sharpeners. Both are used to sharpen knives and other knives, making them sharp or to open them.

[0003] Non-electric knife sharpeners typically employ a structure consisting of a handle with several sharpening mechanisms at the front end of the handle. These sharpening mechanisms can be blade inserts or sharpening rods, etc. For reference, please refer to a knife sharpener disclosed in announcement number CN216967465U for this type of non-electric knife sharpener. Electric knife sharpeners are generally equipped with a motor that drives the grinding wheel to rotate. When the grinding wheel contacts the cutting edge, it grinds the cutting edge.

[0004] However, the aforementioned sharpeners are inconvenient to operate, have poor applicability, and produce poor sharpening results, thus failing to meet usage needs. Summary of the Invention

[0005] To address the shortcomings and defects of existing technologies, a sharpening tool with good applicability and excellent sharpening effect is provided.

[0006] A knife sharpener, comprising: A rotating component and a guiding assembly, the guiding assembly guiding the rotating component to rotate along axis A. A sharpening section is disposed on a rotating component; A moving mechanism that can drive a rotating component to move back and forth along the path of the cutting edge; The rotating component can rotate to bring the grinding part closer to the blade so as to have a position in contact with the blade, or to move the grinding part away from the blade so as to have a position to disengage from the blade. When the grinding part is in contact with the blade, the rotating part moves along the extension direction of the blade to grind the blade.

[0007] With the above structure, the knife sharpener of the present invention has the following advantages compared with the prior art: If the user needs to perform a sharpening operation, first position the knife, with the cutting edge facing down and the tip pointing forward; Preferably, the centerline of the tool is located above axis A and coincides with both; Furthermore, the rotating part rotates along axis A, which allows the grinding part on the rotating part to contact the side of the blade. At this time, the moving mechanism drives the rotating part to move along the extension (front and back) direction of the blade, and the grinding part can grind the blade.

[0008] The rotating part can rotate along axis A, which can better fit the side of the grinding part with the blade, improve the grinding effect, and is suitable for different types of tools (such as tools with different blade thickness and height).

[0009] The moving mechanism allows the rotating part to move along the extension (front and back) direction of the cutting edge, achieving uniform and automatic grinding of the side of the cutting edge.

[0010] After the blade is sharpened, the rotating part is rotated until the sharpening part is no longer in contact with the blade, so that the user can easily remove the knife.

[0011] As an improvement of the present invention, a transmission component is provided on the rotating component. The guiding component includes a channel guiding mechanism or a track guiding mechanism that is driven in conjunction with the transmission component; When the moving mechanism drives the rotating part to move forward along the path of the cutting edge, the channel guiding mechanism or the track guiding mechanism guides the rotating part to rotate until the grinding part contacts the cutting edge through the transmission component; When the moving mechanism drives the rotating part to move backward along the path of the cutting edge, the channel guiding mechanism or the track guiding mechanism guides the rotating part to rotate until the grinding part and the cutting edge are no longer in contact through the transmission component.

[0012] As an improvement of the present invention, the channel guiding mechanism includes: a first guide channel; The first guide groove includes a first forward section extending forward and backward, and a first return section extending forward and backward, wherein the rear end of the first return section is connected to the rear end of the first forward section; The centerline d of the first forward segment and the centerline B of the rotating component form an acute angle a, and the centerline e of the first return segment and the centerline B of the rotating component form an acute angle b, wherein the angle a is smaller than the angle b. The transmission component is in the first return section, at which time the sharpening part is located on the right side of the blade, and a gap is formed between the sharpening part and the right side of the blade. The transmission component travels from the first return section to the first forward section, and the rotating component rotates until the included angle between the grinding part and the cutting edge decreases to the side contact between the grinding part and the cutting edge.

[0013] As an improvement of the present invention, the channel guiding mechanism further includes: a second guide channel; The second guide groove includes a second forward section extending forward and backward, and a second return section extending forward and backward, wherein the rear end of the second return section is connected to the rear end of the second forward section; The centerline dd of the second forward segment forms an acute angle aa with the centerline B of the rotating component, and the centerline ee of the second return segment forms an acute angle bb with the centerline B of the rotating component, wherein the included angle aa is smaller than the included angle bb. The transmission component is in the second return section, at which time the sharpening part is located on the left side of the blade, and a gap is formed between the sharpening part and the left side of the blade. The transmission component travels from the second return section to the second forward section, and the rotating component rotates until the included angle between the grinding part and the cutting edge decreases to the side contact between the grinding part and the cutting edge.

[0014] As an improvement of the present invention, when a channel guiding mechanism is used, the transmission element is an elastic pin and can elastically extend and retract axially.

[0015] As an improvement of the present invention, the transmission member and the grinding part are arranged opposite each other along the same radial direction of the rotating member.

[0016] As an improvement of the present invention, the first forward segment and the second forward segment are arranged symmetrically about the center line B of the rotating member, and the first return segment and the second return segment are arranged symmetrically about the center line B of the rotating member.

[0017] As an improvement of the present invention, the front end of the first forward segment and the front end of the second return segment are connected by a first switching guide groove, and the front end of the second forward segment and the front end of the first return segment are connected by a second switching guide groove. The transmission component travels from the first forward section to the front end of the second return section, and the rotating component drives the grinding part to switch from a position on the right side of the blade to a position on the left side of the blade.

[0018] As an improvement of the present invention, the front end of the first return segment and the front end of the second return segment are respectively located at the front end of the first forward segment and the front end of the second forward segment; The first switching guide slot and the second switching guide slot are arranged in an "X" shaped intersection. A guide mechanism is provided at the intersection, the guide mechanism including a first blocking member and a second blocking member; The first blocking member is rotatably positioned above the first intersection of the first switching guide groove, and the transmission member entering the first switching guide groove can form a blocking engagement with the first blocking member to drive the first blocking member to rotate forward to above the second intersection of the second switching guide groove. The second blocking member is rotatably placed on the third intersection of the second switching guide groove, and the transmission member entering the second switching guide groove can form a blocking engagement with the second blocking member to drive the second blocking member to rotate forward to the fourth intersection of the first switching guide groove.

[0019] As an improvement of the present invention, when the grinding part is in contact with the left side of the blade, and the rotating part moves forward, the track guiding mechanism can guide the rotating part to maintain the state of contact between the grinding part and the left side of the blade, and when the rotating part moves forward to the limit position, it can guide the rotating part to rotate to the point where the grinding part and the right side of the blade are opposite each other. And as the rotating part moves backward, the track guiding mechanism guides the rotating part to maintain a state in which the grinding part is out of contact with the right side of the blade; Furthermore, when the rotating component travels backward to its limit position, the track guiding mechanism can guide the rotating component to rotate until the right side of the grinding part contacts the cutting edge. As the rotating part continues to move forward, it can be guided to rotate until the right side of the sharpening part contacts the cutting edge, and when the rotating part moves forward to its limit position, it can be guided to rotate until the left side of the sharpening part is opposite to the cutting edge. As the rotating component moves backward, the guide mechanism keeps the grinding part out of contact with the left side of the blade. When the rotating component moves backward to its limit position, the track guide mechanism can guide the rotating component to rotate until the grinding part contacts the left side of the blade. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the rotating component and the moving mechanism of the present invention.

[0022] Figure 3 This is a front view of the present invention.

[0023] Figure 4 This is the invention Figure 3 Schematic diagram of the cross-sectional structure in the middle FF direction.

[0024] Figure 5 This is the invention Figure 4 Enlarged schematic diagram of the structure at point G.

[0025] Figure 6 This is a schematic diagram of the rotating component and the grinding part of the present invention.

[0026] Figure 7 This is the invention Figure 6 A schematic diagram of the structure in a semi-sectional state.

[0027] Figure 8 This is a schematic diagram of the tool fixing mechanism of the present invention when fixing the tool.

[0028] Figure 9 This is a schematic diagram of the tool fixing mechanism of the present invention.

[0029] Figure 10 This is a schematic diagram of the gripper structure of the tool fixing mechanism of the present invention.

[0030] Figure 11 This is a schematic diagram of the guide groove of the present invention.

[0031] Figure 12 This is the invention Figure 11 Enlarged schematic diagram of the structure at point H.

[0032] The diagram shows: 1. Rotating component; 2. Grinding section; 3. Moving mechanism; 4. Transmission component; 5. First guide groove; 5.1. First forward section; 5.2. First return section; 6. Second guide groove; 6.1. Second forward section; 6.2. Second return section; 7. First switching guide groove; 7.1. First intersection; 7.2. Fourth intersection; 8. Second switching guide groove; 8.1. Second intersection; 8.2. Third intersection; 11. Slider; 11.1. Guide post; 11.2. Control lever; 12. Gripper; 12.1. Clamping part; 12.2. Mating groove; 13. Elastic component; 14. Lead screw; 15. Lead screw nut; 16. First motor; 17. Mounting bracket; 18. Second motor; 19. Sanding belt frame; 19.1. Rotating wheel; 20. One-way blocking component; 21. Blade; 22. Retaining sleeve. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0034] Please see Figure 1-12 As shown, A knife sharpener, comprising: Rotating component 1 and guiding assembly, the guiding assembly guiding rotating component 1 to rotate along axis A. Grinding section 2 is provided on rotating part 1; The moving mechanism 3 can drive the rotating part 1 to move back and forth along the path of the blade 21; The rotation of the rotating part 1 can drive the sharpening part 2 to approach the blade part 21 so as to have a position in contact with the blade part 21, or drive the sharpening part 2 away from the blade part 21 so as to have a position to disengage from the blade part 21. When the grinding part 2 is in contact with the blade part 21, the rotating part 1 moves along the extension direction of the blade part 21 to grind the blade part 21.

[0035] If the user needs to perform a sharpening operation, first position the knife, with the cutting edge 21 facing downwards and the tip facing forward; Preferably, the centerline of the tool is located above axis A and coincides with both; Furthermore, the rotating part 1 rotates along axis A, which allows the grinding part 2 on the rotating part 1 to contact the side of the blade 21. At this time, the moving mechanism 3 drives the rotating part 1 to move along the extension (front and back) direction of the blade 21, and the grinding part 2 can grind the blade 21.

[0036] The rotating part 1 can rotate along axis A, which can better fit the side of the grinding part 2 and the blade part 21, improve the grinding effect, and is suitable for different types of knives (such as knives with different blade part 21 thickness and height).

[0037] The moving mechanism 3 can move the rotating part 1 along the extension (front and back) direction of the cutting edge 21, so as to achieve uniform and automatic grinding of the side of the cutting edge 21.

[0038] After the blade 21 is sharpened, the rotating part 1 rotates until the sharpening part 2 is no longer in contact with the blade 21, so that the user can easily remove the knife.

[0039] The rotating part 1 is equipped with a transmission part 4. The guiding components include a channel guiding mechanism or a track guiding mechanism that engages with the transmission components. When the moving mechanism 3 drives the rotating part 1 to move forward along the path of the cutting edge 21, the channel guiding mechanism or the track guiding mechanism guides the rotating part 1 to rotate until the grinding part 2 contacts the cutting edge 21 through the transmission part 4. When the moving mechanism drives the rotating part 1 to move backward along the path of the cutting edge 21, the channel guiding mechanism or the track guiding mechanism guides the rotating part to rotate until the grinding part 2 and the cutting edge 21 are no longer in contact through the transmission part 4.

[0040] Please see Figure 4-5 The image shown is an embodiment of the channel guiding mechanism of this application: First guide groove 5; The first guide groove 5 includes a first forward section 5.1 extending forward and backward, and a first return section 5.2 extending forward and backward, wherein the rear end of the first return section 5.2 is connected to the rear end of the first forward section 5.1; The centerline d of the first forward segment 5.1 and the centerline B of the rotating component 1 form an acute angle a, and the centerline e of the first return segment 5.2 and the centerline B of the rotating component 1 form an acute angle b, where angle a is smaller than angle b. The transmission component 4 is in the first return section 5.2. At this time, the sharpening part 2 is located on the right side of the blade part 21, and a gap is formed between the sharpening part 2 and the right side of the blade part 21. The transmission component 4 travels from the first return section 5.2 to the first forward section 5.1, and the rotating component 1 rotates until the included angle between the grinding part 2 and the cutting part 21 decreases to the side contact between the grinding part 2 and the cutting part 21.

[0041] As an improvement of the present invention, the channel guiding mechanism further includes: a second guide channel 6; The second guide groove 6 includes a second forward section 6.1 extending forward and backward, and a second return section 6.2 extending forward and backward, wherein the rear end of the second return section 6.2 is connected to the rear end of the second forward section 6.1; The centerline dd of the second forward segment 6.1 forms an acute angle aa with the centerline B of the rotating component 1, and the centerline ee of the second return segment 6.2 forms an acute angle bb with the centerline B of the rotating component 1. The included angle aa is smaller than the included angle bb. The transmission component 4 is in the second return section 6.2. At this time, the sharpening part 2 is located on the left side of the blade part 21, and a gap is formed between the sharpening part 2 and the left side of the blade part 21. The transmission component 4 travels from the second return section 6.2 to the second forward section 6.1, and the rotating component 1 rotates until the included angle between the grinding part 2 and the cutting part 21 decreases to the side contact between the grinding part 2 and the cutting part 21.

[0042] After the above improvements, the first forward section 5.1, the first return section 5.2, the second forward section 6.1, and the second return section 6.2 are all inclined structures, forming an acute angle with the center line B of the rotating part 1; Specifically, the centerline of the first forward segment 5.1 forms an angle α with the centerline B of the rotating component 1, and the first return segment 5.2 forms an angle b with the centerline B of the rotating component 1. An angle aa is formed between the centerline of the second forward segment 6.1 and the centerline B of the rotating component 1, and an angle bb is formed between the second return segment 6.2 and the centerline B of the rotating component 1. Among them, the included angle a is the same as the included angle aa, and the included angle b is the same as the included angle bb; When the transmission component 4 enters the first return section 5.2 or the second return section 6.2, the change in the included angle causes the rotating component 1 to rotate away from the cutting edge 21. This rotation is fed back to the grinding section 2, increasing the included angle between the grinding section 2 and the cutting edge 21, and creating a gap between the grinding section 2 and the side of the cutting edge 21. Therefore, the grinding section 2 cannot contact the cutting edge 21, and thus cannot perform a grinding function on the cutting edge 21. When the transmission component 4 enters the first forward section 5.1 or the second forward section 6.1 from the return section, the change in the included angle causes the rotating component 1 to rotate closer to the cutting edge 21, which is fed back to the grinding section 2. The included angle between the grinding section 2 and the cutting edge 21 decreases, and the gap between the grinding section 2 and the cutting edge 21 decreases to the point where it contacts the side of the cutting edge 21. At this time, the grinding section 2 can perform a grinding function on the cutting edge 21.

[0043] After the above improvements, the rotation of the rotating part 1 is driven by the change of the guide groove angle through the transmission part 4, and then fed back to the grinding part 2, which has the characteristics of stable and reliable operation.

[0044] In this embodiment, two rotating parts 1 with overlapping shafts can be used. The two rotating parts 1 are driven to move by the moving mechanism 3 respectively. The two rotating parts 1 are respectively provided with a grinding part 2. The transmission part 4 of the two rotating parts 1 independently cooperates with the first guide groove 5 or the second guide groove 6. The grinding part 2 of the rotating part 1 that cooperates with the first guide groove 5 grinds the right side of the blade 21, and the grinding part 2 of the rotating part 1 that cooperates with the second guide groove 6 grinds the left side of the blade 21.

[0045] When a channel guiding mechanism is used, the transmission component 4 is an elastic pin, and it can elastically extend and retract axially.

[0046] Please see Figure 5 As shown, the transmission component 4 uses an elastic pin and is axially extendable and retractable. Preferably, the groove depth of the first forward section 5.1 is greater than the groove depth of the first return section 5.2, and the groove depth of the second forward section 6.1 is greater than the groove depth of the second return section 6.2. The elastic, axially extendable transmission component 4, after entering the first forward section 5.1 from the first return section 5.2, can extend and fit into the first forward section 5.1, thus avoiding incorrect return to the first return section 5.2; After entering the second forward segment 6.1 from the second return segment 6.2, it can extend and fit into the second forward segment 6.1, avoiding incorrect return to the second return segment 6.2.

[0047] Please see Figure 4 , Figure 7 As shown, the transmission component 4 and the grinding part 2 are arranged opposite each other along the same radial direction of the rotating component 1.

[0048] The transmission member 4 and the grinding part 2, which are arranged along the same radial direction, can provide more effective feedback to the grinding part 2 when the transmission member 4 is in transmission cooperation with the channel guide mechanism or the track guide mechanism.

[0049] Please see Figure 2 , Figure 4 As shown, the first forward segment 5.1 and the second forward segment 6.1 are arranged symmetrically to the left and right along the center line B of the rotating component 1, and the first return segment 5.2 and the second return segment 6.2 are arranged symmetrically to the left and right along the center line B of the rotating component 1.

[0050] The above improvements make the structural layout more reasonable and the distance between it and the blade 21 more consistent, so that it can more effectively and evenly grind the blade.

[0051] Please see Figure 4 , Figure 11 , Figure 12As shown, the front end of the first forward segment 5.1 and the front end of the second return segment 6.2 are connected by the first switching guide groove 7, and the front end of the second forward segment 6.1 and the front end of the first return segment 5.2 are connected by the second switching guide groove 8. The transmission component 4 travels from the first forward section 5.1 to the front end of the second return section 6.2, and the rotating component 1 drives the sharpening part 2 to switch from a position on the right side of the blade part 21 to a position on the left side of the blade part 21.

[0052] In this embodiment, only one rotating member 1 is used, with the rear end of the first forward section 5.1 as the starting point of the transmission member 4. At this time, the grinding part 2 is in contact with the rear end of the right side of the blade part 21. Furthermore, the moving mechanism 3 drives the rotating part 1 to move forward along the first forward section 5.1, and the transmission part 4 continues to move forward in the first forward section 5.1. There is no angle change in the first forward section 5.1, so the rotating part 1 cannot rotate. The grinding part 2 continues to move forward along the path of the blade 21 and performs consistent and efficient grinding on the right side of the blade 21. Furthermore, the moving mechanism 3 continues to drive the rotating component 1 forward, and the transmission component 4 enters the position opposite to the rear end of the first return section 5.2 via the first switching guide groove 7. At this time, the moving mechanism 3 drives the rotating part 1 to move backward, and the transmission part 4 enters the front end of the second return section 6.2. Due to the included angle of the second return section 6.2, the rotating part 1 rotates until the sharpening part 2 is placed on the left side of the blade part 21, and a gap is formed between the sharpening part 2 and the sharpening part 2. The transmission component 4 travels backward along the second return section 6.2 until it enters the rear end of the second forward section 6.1. Under the action of the included angle of the second forward section 6.1, the rotating component 1 rotates until the grinding part 2 contacts the left side of the cutting edge 21. Furthermore, the moving mechanism 3 drives the rotating component 1 to move forward, and the transmission component 4 continues to move forward in the second forward rotation, while the grinding part 2 performs consistent and efficient grinding on the left side of the blade 21. Furthermore, the transmission component 4 enters the second switching guide groove 8 and enters the rear end of the first return section 5.2. The moving mechanism 3 drives the rotating component 1 to move backward, and the transmission component 4 moves along the first return section 5.2 to the rear end.

[0053] After the above improvements, the two sides of the blade 21 can be ground by using a rotating part 1 and its grinding part 2, which has the characteristics of high grinding effect consistency, simple structure and relatively low cost.

[0054] When a rotating member 1 is used, preferably, one-way blocking members 20 are provided at the rear end of the first return segment 5.2 and the rear end of the second return segment 6.2. The one-way blocking members 20 play a blocking and limiting role at the rear end. When the transmission member 4 travels to the rear end, it can drive the one-way blocking members 20 to rotate outward, so that the rear ends of the first forward segment 5.1 and the second forward segment 6.1 are exposed. The transmission member 4 can enter the rear end of the first forward segment 5.1 or the second forward segment 6.1. After the transmission member 4 enters, the one-way blocking members 20 can be elastically reset and rotate back to the rear end of the first return segment 5.2 and the rear end of the second return segment 6.2. After the above improvements, it can be avoided that the rotating part 1 will mistakenly enter the first return segment 5.2 or the second return segment 6.2 when it moves forward, so that the device has high operational reliability.

[0055] The front end of the first return segment 5.2 and the front end of the second return segment are located at the front ends of the first forward segment 5.1 and the second forward segment 6.1, respectively; The first switching guide groove 7 and the second switching guide groove 8 are arranged in an "X" shaped cross structure; A guide mechanism is provided at the intersection, and the guide mechanism includes a first blocking member and a second blocking member; The first blocking member is rotatably positioned above the first intersection 7.1 of the first switching guide groove 7, and the transmission member 4 entering the first switching guide groove 7 can form a blocking engagement with the first blocking member to drive the first blocking member to rotate forward to above the second intersection 8.1 of the second switching guide groove 8. The second blocking member is rotatably placed on the third intersection 8.2 of the second switching guide groove 8, and the transmission member 4 entering the second switching guide groove 8 can form a blocking engagement with the second blocking member to drive the second blocking member to rotate forward to the fourth intersection 7.2 of the first switching guide groove 7.

[0056] After the above improvements, the cross-arrangement of the first switching guide groove 7 and the second switching guide groove 8 can make the structure more compact and facilitate the miniaturization of the device. When the transmission component 4 moves forward into the first switching guide groove 7 and drives the first blocking component to rotate forward to above the second intersection 8.1 of the second switching guide groove 8, the second blocking component is still located at the third intersection 8.2 of the second switching guide groove 8. The first blocking component prevents the transmission component 4 from entering the second intersection 8.1, and the second blocking component prevents the transmission component 4 from entering the third intersection 8.2. The transmission component 4 can stably pass through the first intersection 7.1 and the fourth intersection 7.2 to enter the rear end of the second return section 6.2. When the transmission component 4 moves forward into the second switching guide groove 8 and drives the second blocking component to rotate forward to above the fourth intersection 7.2 of the second switching guide groove 8, the first blocking component is still located at the first intersection 7.1 of the first switching guide groove 7. The first blocking component prevents the transmission component 4 from entering the first intersection 7.1, and the second blocking component prevents the transmission component 4 from entering the fourth intersection 7.2. The transmission component 4 can stably pass through the second intersection 8.1 and the third intersection 8.2 to enter the rear end of the first return section 5.2.

[0057] In addition, the first blocking member and the second blocking member are respectively connected to torsion springs. After the first blocking member and the second blocking member are disengaged from the transmission member 4, the torsion springs drive the first blocking member and the second blocking member to return to their initial position.

[0058] The above improvements make the structure stable and reliable in operation, and enhance the user experience.

[0059] Please see Figure 1 , Figure 2 , Figure 8 , Figure 9 , Figure 10 As shown, it also includes a tool fixing mechanism, which includes a slider 11 and two opposing grippers 12. The outer ends of the two grippers 12 are rotatably configured to adjust the clamping space between the two inner grippers 12 during rotation. The slider 11 is positioned below the gripper 12 and is connected by a transmission mechanism. When the slider 11 moves forward, it drives the gripper 12 to rotate forward, thereby increasing the clamping space. When the slider 11 moves backward, it drives the gripper 12 to rotate backward, thereby decreasing the clamping space. A guide post 11.1 protrudes from the upper end face of the slider 11, and a mating groove 12.2 is provided below the gripper 12. The mating groove 12.2 extends inward and allows the guide post 11.1 to pass through. When the slider 11 moves back and forth, the gripper 12 can rotate back and forth through the engagement between the guide post 11.1 and the mating groove 12.2. The slider 11 is connected to an elastic element 13, which can be a spring. One end of the spring stops the slider, and the other end abuts against the front end of the slider 11. The elastic element 13 drives the slider 11 to always have a tendency to move backward.

[0060] The inner side of the gripper 12 is provided with clamping parts 12.1 that abut against each other, and a clamping space is formed between the inner sides of the clamping parts 12.1. When the gripper 12 rotates, the inner clamping parts 12.1 can rotate inward or outward. The slider 11 is connected to the control lever 11.2. If it is necessary to position the tool, first press the control lever 11.2 forward. The control lever 11.2 drives the slider 11 to move forward. The slider 11 drives the two jaws 12 to rotate outward, increasing the clamping space and allowing the tool to be placed into the clamping space. Furthermore, releasing the control lever 11.2 causes the slider 11 to move backward under the action of the elastic element 13, which in turn causes the two grippers 12 to rotate inward, reducing the clamping space. The inner side of the grippers 12 can then firmly hold the tool. Furthermore, the blade can be polished. After the operation is completed, press the control lever 11.2 forward to release the tool from the gripper 12, and then take out the polished tool.

[0061] The above improvements ensure a stable tool position, preventing movement during sharpening and resulting in better sharpening performance. In addition, the operation of the tool fixing mechanism is simple and easy to use.

[0062] The fixing mechanism also includes a retaining sleeve 22 disposed in front of the gripper 12. The retaining sleeve 22 can elastically increase or decrease the inner diameter to accommodate the clamping of various tools, and, in conjunction with the clamping space, it provides better tool stability.

[0063] Please see Figure 1 , Figure 2 As shown, the moving mechanism 3 includes a lead screw 14 and a lead screw nut 15. One end of the lead screw 14 is connected to the output end of the motor for transmission. The lead screw nut 15 is sleeved on the lead screw 14. A mounting bracket 17 is provided on the lead screw nut 15. The rotating part 1 is connected to the mounting bracket 17.

[0064] Preferably, the mounting bracket 17 is equipped with a bearing, and the rotating part 1 is connected to the bearing to make the rotation smoother and prevent the device from jamming.

[0065] The motor drives the lead screw 14 to rotate, which in turn drives the lead screw nut 15 to move the mounting bracket 17 back and forth, and drives the rotating part 1 to move, so that the transmission part 4 can stably guide the corresponding groove.

[0066] As an improvement of the present invention, the grinding part can also be a ceramic body, a steel rod, or other component that can grind the cutting edge. In this application, the grinding section 2 uses a sanding belt, and a motor is installed on the mounting bracket 17. The output end of the motor extends into the inside of the rotating part 1. The rotating part 1 is provided with a sanding belt frame 19, which has two rotating wheels 19.1, and the sanding belt is sleeved on the two rotating wheels 19.1; One of the rotating wheels 19.1 is linked to the output end of the motor; When the rotating part 1 rotates, it drives the sanding belt frame 19 to rotate synchronously.

[0067] After the above improvements, the sanding belt is driven to rotate by a motor. After the outer circumference of the sanding belt comes into contact with the cutting edge 21, the cutting edge 21 can be polished, which has the characteristics of high efficiency and better effect.

[0068] Please see Figure 5 As shown, the transmission component 4 uses a flexible pin and can extend and retract axially.

[0069] Please refer to the embodiment of the present invention using a track guide mechanism: when the grinding part 2 is in contact with the left side of the blade part 21, when the rotating part 1 moves forward, the track guide mechanism can guide the rotating part 1 to maintain the state in which the grinding part 2 and the left side of the blade part 21 are in contact, and when the rotating part 1 moves forward to the limit position, it can guide the rotating part 1 to rotate to the right side of the grinding part 2 and the blade part 21 facing each other. And when the rotating part 1 moves backward, the track guide mechanism guides the rotating part 1 to keep the grinding part 2 out of contact with the right side of the blade part 21; Furthermore, when the rotating part 1 travels backward to its limit position, the track guide mechanism can guide the rotating part 1 to rotate until the right side of the grinding part 2 contacts the blade part 21; As the rotating part 1 continues to move forward, it can be guided to rotate until the sharpening part 2 contacts the right side of the blade part 21, and when the rotating part 1 moves forward to its limit position, it can be guided to rotate until the sharpening part 2 is opposite to the left side of the blade part 21. When the rotating part 1 moves backward, it is guided to keep the grinding part 2 out of contact with the left side of the blade part 21. When the rotating part 1 moves backward to the limit position, the track guide mechanism can guide the rotating part 1 to rotate until the grinding part 2 contacts the left side of the blade part 21.

[0070] 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 falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A knife sharpener, characterized in that, include: The rotating component (1) and the guiding assembly, the guiding assembly guiding the rotating component (1) to rotate along axis A, A sharpening part (2) is provided on a rotating member (1); The moving mechanism (3) can drive the rotating part (1) to move back and forth along the path of the blade (21); The rotating member (1) can rotate to drive the grinding part (2) to approach the blade (21) so as to have a position in contact with the blade (21), or drive the grinding part (2) away from the blade (21) so as to have a position to disengage from the blade (21); When the grinding part (2) is in contact with the blade (21), the rotating part (1) moves along the extension direction of the blade (21) to grind the blade (21); The rotating component (1) is provided with a transmission component (4). The guiding component includes a channel guiding mechanism that is in transmission cooperation with the transmission component (4); When the moving mechanism (3) drives the rotating part (1) to move forward along the path of the blade, the channel guiding mechanism guides the rotating part (1) to rotate to contact the grinding part (2) and the blade (21) through the transmission part (4); When the moving mechanism drives the rotating part (1) to move backward along the path of the cutting edge (21), the channel guiding mechanism guides the rotating part (1) to rotate until the grinding part (2) and the cutting edge (21) are no longer in contact through the transmission part (4); The channel guiding mechanism includes: a first guide channel (5); The first guide groove (5) includes a first forward section (5.1) extending forward and backward, and a first return section (5.2) extending forward and backward, with the rear end of the first return section (5.2) connected to the rear end of the first forward section (5.1); The centerline d of the first forward segment (5.1) and the centerline B of the rotating component (1) have an acute angle a, and the centerline e of the first return segment (5.2) and the centerline B of the rotating component (1) have an acute angle b, wherein the angle a is smaller than the angle b. The transmission component (4) is in the first return section (5.2), at which time the sharpening part (2) is located on the right side of the blade (21), and a gap is formed between the sharpening part (2) and the right side of the blade (21); The transmission component (4) travels from the first return section (5.2) to the first forward section (5.1), and the rotating component (1) rotates until the included angle between the grinding part (2) and the blade (21) decreases to the side contact between the grinding part (2) and the blade (21); The channel guiding mechanism further includes: a second guide channel (6); The second guide groove (6) includes a second forward section (6.1) extending forward and backward, and a second return section (6.2) extending forward and backward, with the rear end of the second return section (6.2) connected to the rear end of the second forward section (6.1); The centerline dd of the second forward segment (6.1) forms an acute angle aa with the centerline B of the rotating component (1), and the centerline ee of the second return segment (6.2) forms an acute angle bb with the centerline B of the rotating component (1), wherein the angle aa is smaller than the angle bb. The transmission component (4) is located in the second return section (6.2). At this time, the sharpening part (2) is located on the left side of the blade (21), and a gap is formed between the sharpening part (2) and the left side of the blade (21). The transmission component (4) travels from the second return section (6.2) to the second forward section (6.1), and the rotating component (1) rotates until the included angle between the grinding part (2) and the blade (21) decreases to the side contact between the grinding part (2) and the blade (21); The transmission component (4) is an elastic pin, and it can elastically extend and retract axially; The front end of the first forward segment (5.1) and the front end of the second return segment (6.2) are connected through the first switching guide groove (7), and the front end of the second forward segment (6.1) and the front end of the first return segment (5.2) are connected through the second switching guide groove (8); The transmission component (4) travels from the first forward section (5.1) to the front end of the second return section (6.2), and the rotating component (1) drives the grinding part (2) to switch from the position on the right side of the blade (21) to the position on the left side of the blade (21).

2. The knife sharpener according to claim 1, characterized in that: The transmission component (4) and the grinding part (2) are arranged opposite each other along the same radial direction as the rotating component (1).

3. The knife sharpener according to claim 1, characterized in that: The first forward segment (5.1) and the second forward segment (6.1) are arranged symmetrically to the left and right along the center line B of the rotating member (1), and the first return segment (5.2) and the second return segment (6.2) are arranged symmetrically to the left and right along the center line B of the rotating member (1).

4. A knife sharpener according to claim 1, characterized in that: The front end of the first return segment (5.2) and the front end of the second return segment are located at the front ends of the first forward segment (5.1) and the second forward segment (6.1), respectively; The first switching guide groove (7) and the second switching guide groove (8) are arranged in an "X" cross structure; A guide mechanism is provided at the intersection, the guide mechanism including a first blocking member and a second blocking member; The first blocking member is rotatably positioned above the first intersection (7.1) of the first switching guide groove (7), and the transmission member (4) entering the first switching guide groove (7) can form a blocking engagement with the first blocking member to drive the first blocking member to rotate forward to above the second intersection (8.1) of the second switching guide groove (8). The second blocking member is rotatably placed on the third intersection (8.2) of the second switching guide groove (8), and the transmission member (4) entering the second switching guide groove (8) can form a blocking engagement with the second blocking member to drive the second blocking member to rotate forward to the fourth intersection (7.2) of the first switching guide groove (7).

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