Full-automatic knife sharpener with double-sided synchronous sharpening and edging functions
By designing a fully automatic knife sharpener with double-sided synchronous grinding, using cross-placed grinding stones and a geared motor rotating synchronously, the problem of existing knife sharpening tools being unable to achieve full automation and synchronous grinding is solved, realizing efficient and precise knife edge sharpening.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2026-03-13
AI Technical Summary
Existing sharpening tools require manual operation, making it difficult to achieve full automation, and it is also difficult to simultaneously sharpen both sides of the tool, thus reducing sharpening efficiency.
A fully automatic knife sharpener with double-sided synchronous grinding and sharpening is designed. It uses cross-placed grinding stones and a geared motor to rotate synchronously. The synchronous rotation of the grinding stones is achieved through the meshing of a transmission belt and gears, ensuring that the cutting edges on both sides of the knife are ground evenly.
It achieves uniform grinding of both sides of the cutting edge, improves grinding accuracy and efficiency, reduces grinding time, and prevents damage from impact of the grinding stone.
Smart Images
Figure CN223989406U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grinding technology, and in particular to a fully automatic knife sharpener that simultaneously sharpens and grinds both sides. Background Technology
[0002] A knife sharpener is a tool used to sharpen and restore the sharpness of knives and tools, widely used in kitchens, craft processing, agriculture, and other fields. With the improvement of living standards, people have increasingly higher requirements for the sharpness of kitchen knives, scissors, and other tools, thus increasing the demand for knife sharpeners. Traditional sharpening methods include manual sharpening and sharpening with a whetstone. With the development of technology, electric knife sharpeners have gradually emerged and become widely used, improving sharpening efficiency and the precision of knife sharpening. Current electric knife sharpeners generally use a rotating mechanism with a whetstone; the high-speed rotation of the whetstone sharpens the knife to restore its sharpness.
[0003] Current sharpening tools require manual operation, such as whetstones, sharpeners, and edge sharpeners. They are difficult to automate when sharpening various knives, and most of them cannot simultaneously sharpen both sides of the knife, which increases the sharpening time and reduces the sharpening efficiency. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides a fully automatic knife sharpener with double-sided synchronous grinding and sharpening.
[0005] This utility model is achieved using the following technical solution: a fully automatic knife sharpener with double-sided synchronous grinding and sharpening, comprising a base, a sealing plate fixedly connected to the top of the base, a limiting shell fixedly connected to the top of the sealing plate, a switch fixedly connected to the front of the base, a charging hole fixedly connected to the front of the base, and a battery fixedly connected to the bottom inner wall of the base.
[0006] The above technical solution allows the entire device to be started by a switch, enabling it to operate. The charging port can charge the battery, which in turn provides power to the entire device. The limiting shell can initially limit the blade to be sharpened.
[0007] As a further improvement to the above solution, the switch is electrically connected to the battery, the charging port is electrically connected to the battery, there are two limiting shells, and a tool insertion port is provided between the two limiting shells.
[0008] As a further improvement to the above solution, a ramp block is fixedly connected to the bottom inner wall of the base, an mounting plate is fixedly connected to the top of the ramp block, a fixing block is fixedly connected to the bottom inner wall of the base, and a shaft seat is fixedly connected to the top of the fixing block.
[0009] The above technical solution allows the angle of the mounting plate to be fixed by the set ramp blocks, the mounting plate to fix the geared motor, and the set shaft seat to connect to and fix the drive shaft.
[0010] As a further improvement to the above solution, a rotating block is rotatably connected inside the bearing seat, a drive shaft is fixedly connected inside the rotating block, a fixing frame is fixedly connected to the bottom inner wall of the base, and a first pulley is fixedly connected to the outside of the drive shaft.
[0011] Through the above technical solution, the transmission shaft can drive the first pulley to rotate synchronously, the fixed frame can clamp and fix the tool to be ground, and the first pulley can transmit power to drive the transmission shaft to rotate.
[0012] As a further improvement to the above solution, the drive shaft is rotatably connected inside the fixed frame, and there are two fixed frames, which are symmetrically distributed in front and behind on the bottom inner wall of the base.
[0013] As a further improvement to the above solution, a transmission belt is externally connected to the first pulley, a reduction motor is fixedly connected to the left side of the mounting plate, a rotating column is fixedly connected to the output end of the reduction motor, a second pulley is fixedly connected to the outside of the rotating column, a small flange is fixedly connected to the outside of the rotating column, and a grinding stone is fixedly connected to the outside of the small flange.
[0014] Through the above technical solution, the set geared motor can drive the rotating column to rotate, and the rotating column can drive the second pulley and the transmission belt to rotate, so that the transmission belt can transmit power. At the same time, it can drive the small flange to rotate the grinding stone to grind the tool.
[0015] As a further improvement to the above solution, the first pulley and the second pulley are connected by a transmission belt. Gears are fixedly connected to the outer surfaces of both the first pulley and the second pulley, and a rack is fixedly connected to the inner wall of the transmission belt. The rack and the gears mesh with each other.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] This invention provides a method for securing the tool during grinding by placing it inside the tool inlet between two limiting shells and moving it downwards to clamp the tool with a fixing bracket. This method ensures the tool is stably fixed during grinding, preventing displacement under the action of the grinding stone, thus guaranteeing the accuracy and safety of grinding. Power is supplied by a battery to two geared motors, which rotate synchronously via a first pulley, a second pulley, and a transmission belt. Stable power transmission and good synchronization ensure the stability of the cross-rotation of the grinding stone, contributing to stable and uniform grinding on the tool edge. This reduces uneven grinding caused by different speeds or asynchronous rotation, improving the degree of automation.
[0018] This invention utilizes a grinding stone that rotates synchronously in a cross pattern. The grinding stone, rotating at the same speed and angle, rubs against the cutting edge of the tool. This double-sided synchronous grinding method ensures that both sides of the cutting edge of the tool are evenly ground, improving the precision and efficiency of grinding. Compared to single-sided grinding followed by flipping the tool for further grinding, it reduces the overall grinding time and makes the shape of both sides of the cutting edge of the tool more symmetrical. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the geared motor part of this utility model;
[0021] Figure 3 This is a schematic diagram of the fixing frame part of this utility model;
[0022] Figure 4 This is a schematic diagram of the rotating column part of this utility model;
[0023] Figure 5 This is a schematic diagram of the grinding stone part of this utility model.
[0024] Explanation of key symbols:
[0025] 1. Base; 2. Sealing plate; 3. Limiting shell; 4. Switch; 5. Charging port; 6. Battery; 7. Ramp block; 8. Mounting plate; 9. Fixing block; 10. Shaft seat; 11. Rotating block; 12. Drive shaft; 13. Fixing frame; 14. First pulley; 15. Drive belt; 16. Gear motor; 17. Rotating column; 18. Second pulley; 19. Small flange; 20. Grinding stone. Detailed Implementation
[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0027] Example:
[0028] Please combine Figure 1-5 This embodiment of a fully automatic knife sharpener for double-sided synchronous sharpening includes a base 1, a sealing plate 2 fixedly connected to the top of the base 1, a limiting shell 3 fixedly connected to the top of the sealing plate 2, a switch 4 fixedly connected to the front of the base 1, a charging hole 5 fixedly connected to the front of the base 1, and a battery 6 fixedly connected to the bottom inner wall of the base 1.
[0029] Switch 4 is electrically connected to battery 6, charging port 5 is electrically connected to battery 6, there are two limiting shells 3, and a tool insertion port is provided between the two limiting shells 3.
[0030] A ramp block 7 is fixedly connected to the bottom inner wall of the base 1, an mounting plate 8 is fixedly connected to the top of the ramp block 7, a fixing block 9 is fixedly connected to the bottom inner wall of the base 1, and a bearing seat 10 is fixedly connected to the top of the fixing block 9.
[0031] A rotating block 11 is rotatably connected inside the bearing seat 10, and a drive shaft 12 is fixedly connected inside the rotating block 11. A fixing bracket 13 is fixedly connected to the bottom inner wall of the base 1, and a first pulley 14 is fixedly connected to the outside of the drive shaft 12.
[0032] The drive shaft 12 is rotatably connected inside the fixed frame 13. There are two fixed frames 13, which are symmetrically distributed in front and behind on the bottom inner wall of the base 1.
[0033] The first pulley 14 is externally connected to a transmission belt 15. A reduction motor 16 is fixedly connected to the left side of the mounting plate 8. A rotating column 17 is fixedly connected to the output end of the reduction motor 16. A second pulley 18 is fixedly connected to the outside of the rotating column 17. A small flange 19 is fixedly connected to the outside of the rotating column 17. A grinding stone 20 is fixedly connected to the outside of the small flange 19.
[0034] The first pulley 14 and the second pulley 18 are connected by a transmission belt 15. Gears are fixedly connected to the outer surfaces of both the first pulley 14 and the second pulley 18. A rack is fixedly connected to the inner wall of the transmission belt 15, and the rack and gears mesh with each other.
[0035] The implementation principle of a fully automatic knife sharpener with double-sided synchronous sharpening in this embodiment is as follows: During operation, the base 1 is first placed in a suitable position and fixed. Then, the desired sharpening tool is picked up, with its blade facing down, and placed inside the tool inlet between the two limiting shells 3. The tool is then moved downwards so that the fixing frame 13 clamps it, positioning the blade edge at the intersection of the grinding stones 20. At this point, the switch 4 is pressed, allowing the battery 6 to power the two reduction motors 16, causing them to rotate synchronously at the same speed. Since the two grinding stones 20 are placed crosswise and the two reduction motors 16 are symmetrically positioned, if the two reduction motors 16 rotate in the same direction, the two grinding stones 20 will rotate in opposite directions, colliding and causing damage. Therefore, rotating the two motors in opposite directions ensures that the two grinding stones 20 rotate in the same direction, preventing collisions. The impact causes damage, and the rotation of the rotating column 17 drives the second pulley 18, which is fixedly connected to the outside of the rotating column 17, to rotate. This causes the second pulley 18 to drive the first pulley 14 to rotate through the transmission belt 15, which in turn causes the transmission shaft 12 to rotate. This makes the rotation of the two reduction motors 16 more synchronized, and the reduction motors 16 drive the rotating column 17 to rotate, causing the small flange 19 to rotate. This causes the grinding stones 20 to rotate synchronously in a cross direction. Since the ramp block 7 itself has a slope, the mounting plate 8 also has a certain angle after installation. Since the reduction motor 16 is fixedly connected to the left side of the mounting plate 8, the reduction motor 16 has a certain tilt angle, so that the cross angle between the grinding stones 20 is 30°. At this time, the grinding stones 20, which rotate at the same speed and angle, rub against the cutting edge of the tool to be ground, so as to achieve the purpose of sharpening the cutting edge of the tool. At this time, the sealing plate 2 is set to block and protect against the splashes during grinding.
[0036] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A full-automatic knife sharpener for double-sided synchronous sharpening and grinding, comprising a base (1), characterized in that, The top of the base (1) is fixedly connected with an enclosure plate (2), the top of the enclosure plate (2) is fixedly connected with a limiting shell (3), the front of the base (1) is fixedly connected with a switch (4), the front of the base (1) is fixedly connected with a charging hole (5), and the bottom inner wall of the base (1) is fixedly connected with a battery (6).
2. A full-automatic double-sided synchronous sharpening and grinding sharpener according to claim 1, characterized in that: The switch (4) is electrically connected with the battery (6), the charging hole (5) is electrically connected with the battery (6), the limiting shell (3) is provided with two, and a cutter inlet is arranged between the two limiting shells (3).
3. A full-automatic double-sided synchronous sharpening and grinding sharpener according to claim 1, characterized in that: The bottom inner wall of the base (1) is fixedly connected with an inclined block (7), the top of the inclined block (7) is fixedly connected with a mounting plate (8), the bottom inner wall of the base (1) is fixedly connected with a fixed block (9), and the top of the fixed block (9) is fixedly connected with a shaft seat (10).
4. A full-automatic double-sided synchronous sharpening and grinding sharpener according to claim 3, characterized in that: The inside of the shaft seat (10) is rotatably connected with a rotating block (11), the inside of the rotating block (11) is fixedly connected with a transmission shaft (12), the bottom inner wall of the base (1) is fixedly connected with a fixed frame (13), and the outside of the transmission shaft (12) is fixedly connected with a first belt pulley (14).
5. A full automatic knife sharpener for double-sided synchronous sharpening and grinding, according to claim 4, characterized in that: The transmission shaft (12) is rotatably connected in the inside of the fixed frame (13), the fixed frame (13) is provided with two, and the two fixed frames (13) are symmetrically distributed on the bottom inner wall of the base (1).
6. A full automatic knife sharpener for double-sided synchronous sharpening and grinding, according to claim 5, characterized in that: The outside of the first belt pulley (14) is drivingly connected with a transmission belt (15), the left side of the mounting plate (8) is fixedly connected with a speed reducer motor (16), the output end of the speed reducer motor (16) is fixedly connected with a rotating column (17), the outside of the rotating column (17) is fixedly connected with a second belt pulley (18), the outside of the rotating column (17) is fixedly connected with a small flange (19), and the outside of the small flange (19) is fixedly connected with a grinding stone (20).
7. A full automatic knife sharpener for double-sided synchronous sharpening and grinding, according to claim 6, characterized in that: The first belt pulley (14) and the second belt pulley (18) are drivingly connected through the transmission belt (15), the outer surfaces of the first belt pulley (14) and the second belt pulley (18) are fixedly connected with gears, the inner wall of the transmission belt (15) is fixedly connected with a rack, and the rack and the gears are intermeshed.