Electric knife sharpener

Abstract

This utility model relates to the technical field of knife sharpening devices and discloses an electric knife sharpening machine, including a base. A reciprocating knife clamp is provided on one side of the base, and a side plate is provided on the other side. A float plate is provided inside the side plate. A drive motor and its driven grinding wheel are provided on the side of the float plate facing the knife clamp. A sliding column is arranged on the side of the float plate facing the side plate, and a compression spring is sleeved on the sliding column. A threaded hole is provided on the side plate, and a bolt passes through the threaded hole. The knife clamp holds and fixes the knife, and the reciprocating drive mechanism drives it to move back and forth on the sliding mechanism. The motor-driven grinding wheel presses against the float plate through the bolt. By adjusting the distance between the grinding wheel and the knife, and the angle between the grinding wheel's grinding surface and the knife, the grinding wheel abuts against the cutting edge of the knife for sharpening. The grinding surface of the grinding wheel adapts to the bevel of the cutting edge. This machine features a simple structure, easy operation, and low cost.

Description

Technical Field

[0001] This utility model relates to the field of knife sharpening devices, specifically to an electric knife sharpening machine. Background Technology

[0002] Traditional knife sharpening methods involve whetstones and hand-cranked grinders, which are time-consuming and labor-intensive. Consequently, V-shaped sharpeners and knife sharpening machines emerged.

[0003] In the prior art, the utility model patent document with publication number CN 212527062 U discloses a household electric knife sharpener, which uses a knife placed in a knife groove and supported on the blade by a blade support part of a positioning device. On the one hand, the knife has poor stability, and on the other hand, the blade at the blade support part is not easy to sharpen. In addition, its structure is complicated and the angle between the knife and the grinding wheel is not easy to adjust. Utility Model Content

[0004] The purpose of this invention is to provide an electric knife sharpening machine that is simple in structure and easy to operate.

[0005] This utility model is achieved through the following technical solution: An electric knife sharpening machine includes a base. A sliding mechanism and a reciprocating drive mechanism are provided on one side of the base. A tool clamp is provided on the sliding mechanism, and the reciprocating drive mechanism drives the tool clamp to slide along the sliding mechanism. A side plate is provided on the other side of the base. A float plate is provided on the inner side of the side plate. A drive motor and its driven grinding wheel are provided on the side of the float plate facing the tool clamp. A sliding column is provided on the side plate facing the side plate. A sliding hole corresponding to the sliding column is opened on the side plate. The sliding column extends to the outer side of the side plate through the corresponding sliding hole and a compression spring is sleeved on the sliding column. A threaded hole is opened on the side plate, and a bolt passes through the threaded hole.

[0006] The above solution uses a tool clamp to hold and fix the tool, and drives it to move back and forth on the sliding mechanism through a reciprocating drive mechanism. On the other side of the base, a motor-driven grinding wheel presses against the float plate through bolts. Adjusting the distance between the grinding wheel and the tool allows the grinding wheel to come into contact with the cutting edge of the tool for grinding. In addition, by adjusting the pressure of the compression springs on the sliding columns on different sides of the float plate, the angle between the grinding wheel grinding surface and the tool can be adjusted so that the grinding wheel grinding surface is adapted to the bevel of the cutting edge. It has the characteristics of simple structure, easy operation and low cost.

[0007] Preferably, the base has a U-shaped structure, with a support plate connected to one side by upper and lower bolts, and the sliding mechanism and the reciprocating drive mechanism are both mounted on the support plate.

[0008] By setting shims of different thicknesses between the upper and lower bolts of the support plate and the base, the tilt angle of the support plate can be adjusted, thereby adjusting the tilt angle of the tool, that is, adjusting the angle between the grinding wheel and the tool. The angle adjusted by the support plate is a relatively fixed tilt angle, while the angle adjusted by the float plate is a temporary adjustment to adapt to different blade bevel angles. The two work together to improve the flexibility of angle adjustment and facilitate the grinding of tools with large bevels.

[0009] The reciprocating drive mechanism includes a lead screw driven by a motor and a drive block threaded onto the lead screw. A slide block is provided on the drive block, and a sliding connector connected to the tool clamp is provided on the slide block.

[0010] A locking element is provided between the sliding connector and the slide block.

[0011] The reciprocating drive mechanism and the tool holder are connected and disconnected via a sliding connector. When connected, the reciprocating drive mechanism drives the tool to reciprocate, achieving automatic tool sharpening. When disconnected, the tool can be moved manually for localized adjustments.

[0012] The top of the tool holder is provided with a connecting part that mates with the sliding connector.

[0013] The connecting part is provided with a hole or groove to facilitate the insertion or snapping of the sliding connector.

[0014] One end of the tool holder is provided with a threaded top post and a movable slot. The threaded top post presses against the movable slot to clamp and fix the tool in the tool holder.

[0015] The tool clamp has a protruding structure on one side to limit the side of the tool and provide lateral support to the tool during the grinding process, thereby improving the tool's stability.

[0016] The base is also equipped with a controller, which has a single-pole double-throw switch, so that the start and stop of the two drive motors can be controlled by a single switch, making operation more convenient.

[0017] The base is also equipped with a water tank, and the water tank is equipped with a water outlet pipe that extends to the grinding wheel, so as to supply water to the grinding wheel for cooling during sharpening and improve the service life of the grinding wheel.

[0018] The electric knife sharpening machine of this invention features a simple structure, easy operation, and low cost. It provides good knife fixing stability and allows for convenient adjustment of the angle and distance between the knife and the grinding wheel surface, making it worthy of widespread promotion and use. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings: Figure 1This is a three-dimensional structural schematic diagram of an embodiment of the present utility model; Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure; Figure 3 This is a top view of the tool fixing clamp according to an embodiment of the present invention; Figure 4 This is a top view of the sliding connector in an embodiment of this utility model. Detailed Implementation

[0020] The technical solution of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Example

[0021] See Figure 1-4 An electric knife sharpening machine includes a base 1, on one side of which a sliding mechanism and a reciprocating drive mechanism are provided. A knife fixing clamp 2 is provided on the sliding mechanism. (See figure) Figure 1 and 3 In this embodiment, the tool clamp 2 is a long groove-shaped structure. One end of the clamp is provided with a threaded top post 2-1 and a movable slot 2-2. The movable slot 2-2 is slidably connected to the tool clamp 2. The threaded top post 2-1 passes through the tool clamp 2 from the outside and is threadedly connected to the tool clamp 2. The tool 7 is clamped and fixed in the tool clamp 2 by pressing the movable slot 2-2. A protruding structure 2-3 is provided on one side of the tool clamp 2 to limit the side of the tool 7. During the grinding process, it provides lateral support to the tool 7 and improves the stability of the tool 7.

[0022] The reciprocating drive mechanism drives the tool holder 2 to slide along the sliding mechanism 15. In this embodiment, the sliding mechanism 15 includes a fixed slide rail 15-2 and a movable slide rail 15-1 that are slidably connected to each other. The back of the tool holder 2 is fixedly connected to the movable slide rail 15-1. The reciprocating drive mechanism includes a lead screw 9 driven by a motor 8 and a drive block 10 threadedly connected to the lead screw 9. Limit switches 11 are provided at both ends of the lead screw 9 to control the forward and reverse rotation of the motor 8, so that the motor 8 drives the drive block 10 to reciprocate through the lead screw 9. A slide block 12 is provided on the drive block 10, and a sliding connector 13 connected to the tool holder 2 is provided on the slide block 12. A locking member 14 is provided between the sliding connector 13 and the slide block 12. The top of the tool holder 2 is provided with a connecting part that cooperates with the sliding connector 13. The connecting part is provided with a hole 2-4 or a groove to facilitate the insertion or locking of the sliding connector 13. In this embodiment, the slide block 12 has slots on both sides, the sliding connector 13 is a sliding plate, and the insertion holes 2-4 on the connecting part of the tool holder 2 are elongated holes that correspond to and cooperate with the sliding plate. The sliding plate is inserted into the elongated hole to connect the reciprocating drive mechanism and the tool holder. The locking member 14 is a bolt that is threadedly connected to the sliding plate, passes through the sliding plate and presses against the slide block 12 to fix the sliding plate. The reciprocating drive mechanism and the tool holder 2 are connected and disconnected through the sliding connector 13. When connected, the reciprocating drive mechanism drives the tool 7 to reciprocate to achieve automatic tool sharpening. When disconnected, the tool can be moved manually for local trimming.

[0023] A side plate 3 is provided on the other side of the base 1. A float plate 4 is provided on the inner side of the side plate 3. A drive motor 5 and a grinding wheel 6 driven by the drive motor 5 are provided on the side of the float plate 4 facing the tool clamp 2. A sliding column 16 is provided on the side of the float plate 4 facing the side plate 3. A sliding hole corresponding to the sliding column 16 is opened on the side plate 3. The sliding column 16 extends to the outside of the side plate 3 through the corresponding sliding hole. A compression spring 17 is sleeved on the sliding column 16, and a double nut is threaded to the end of the sliding column to limit and adjust the compression spring 17. A threaded hole is opened on the side plate 3, and a bolt 18 is inserted into the threaded hole. In this embodiment, the bolt 18 is set at the center of the float plate 4. Two or more bolts 18 can also be arranged. By using the bolt 18 in conjunction with the sliding column 16 and the compression spring 17, the distance and angle between the float plate 4 and the tool clamp 2 can be adjusted, that is, the distance and angle between the grinding wheel grinding surface and the tool can be adjusted.

[0024] The base 1 is also equipped with a controller 19, which has a single-pole double-throw switch (not shown in the figure) to control the synchronous start and stop of the drive motors 5 and 8 through a single switch, making operation more convenient. The base 1 is also equipped with a water tank 20, which has a water outlet pipe 21 extending to the grinding wheel 6 to supply water to the grinding wheel 6 for cooling during sharpening and to improve the service life of the grinding wheel 6.

[0025] Furthermore, in this embodiment, the base 1 has a U-shaped structure, with a support plate 22 connected to one side by two rows of bolts. The sliding mechanism and the reciprocating drive mechanism are both mounted on the support plate 22. The reciprocating drive mechanism uses square steel 23 as a base and is mounted on one side of the support plate 22. The fixed slide rail 15-2 of the sliding mechanism 15 is mounted on the other side of the support plate 22. By setting shims 24 of different thicknesses on the two rows of bolts between the support plate 22 and the base 1, the tilt angle of the support plate 22 can be adjusted, thereby adjusting the tilt angle of the tool 7, that is, adjusting the angle between the grinding wheel grinding surface and the tool 7. The angle adjusted by the support plate 22 is a relatively fixed tilt angle, and the angle adjusted by the float plate 4 is a temporary adjustment to adapt to different blade bevel angles. The two work together to improve the flexibility of angle adjustment and adapt to the grinding of tools with large bevels.

[0026] The base 1 is provided with a rubber support roller 25 below the tool fixing clamp 2 to prevent the tool 7 from falling off and damaging the cutting edge during the sharpening process.

[0027] The float 4 is equipped with a handrail 26 to facilitate adjustment or sharpening of the tool and to prevent damage to the float 4. In use, rotate the tool 7 into the tool holder 2 to hold and fix the tool 7, adjust the angle between the grinding wheel and the tool and make them abut, turn on the power switch, drive the motor 5 to drive the grinding wheel 6 to rotate, and the reciprocating drive mechanism drives the tool holder 2 to move back and forth on the sliding mechanism 15 to perform grinding.

[0028] Finally, it should be noted that the above are only some preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electric knife sharpening machine, comprising a base, a sliding mechanism and a reciprocating drive mechanism being provided on one side of the base, a tool fixing clamp being provided on the sliding mechanism, and the reciprocating drive mechanism driving the tool fixing clamp to slide along the sliding mechanism; a side plate being provided on the other side of the base, a float plate being provided on the inner side of the side plate, a drive motor and a grinding wheel driven by the float plate being provided on the side of the float plate facing the tool fixing clamp, a sliding column being provided on the side of the float plate facing the side plate, a sliding hole corresponding to the sliding column being opened on the side plate, the sliding column extending to the outer side of the side plate through the corresponding sliding hole, and a compression spring being sleeved on the sliding column; a threaded hole being opened on the side plate, and a bolt passing through the threaded hole.

2. The electric knife sharpening machine according to claim 1, characterized in that: The base has a U-shaped structure, with a support plate connected to one side by upper and lower bolts. The sliding mechanism and the reciprocating drive mechanism are both mounted on the support plate.

3. The electric knife sharpening machine according to claim 1 or 2, characterized in that: The reciprocating drive mechanism includes a lead screw driven by a motor and a drive block threaded onto the lead screw. A slide block is provided on the drive block, and a sliding connector connected to the tool clamp is provided on the slide block.

4. The electric knife sharpening machine according to claim 3, characterized in that: A locking element is provided between the sliding connector and the slide block.

5. The electric knife sharpening machine according to claim 1 or 2, characterized in that: The top of the tool holder is provided with a connecting part that mates with the sliding connector.

6. The electric knife sharpening machine according to claim 5, characterized in that: The connecting part is provided with a socket or groove.

7. The electric knife sharpening machine according to claim 1, characterized in that: One end of the tool holder is provided with a threaded top post and a movable slot. The threaded top post presses against the movable slot to clamp and fix the tool in the tool holder.

8. The electric knife sharpening machine according to claim 1, characterized in that: The tool holder has a protruding structure on one side to limit the movement of the tool side.

9. The electric knife sharpening machine according to claim 1, characterized in that: The base is also equipped with a controller, which is equipped with a single-pole double-throw switch.

10. The electric knife sharpening machine according to claim 1, characterized in that: The base is also equipped with a water tank, and the water tank is equipped with a water outlet pipe extending to the grinding wheel.

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