Automatic tool sharpener

Abstract

The utility model relates to the technical field of tool repairing, in particular to an automatic tool sharpener which comprises a rack, a clamping and fixing device is arranged on the rack, a tool is fixed on the clamping and fixing device, one side of the top end of the rack is rotatably connected with a rotating frame, a polishing device and a lubricating device are arranged on the rotating frame, and the lubricating device is arranged on one side of the polishing device. The grinding device on the rotating frame can press downwards and abut against the cutting edge of the cutter under the action of gravity so as to grind the cutter, and due to the fact that the gravity of the grinding device and the gravity of the lubricating device are applied to the cutting edge, the grinding device can conduct automatic feeding, automatic feeding grinding is achieved, and manual adjustment is not needed.

Description

Technical Field

[0001] The utility model relates to the technical field of tool repairing, in particular to an automatic tool sharpening machine. Background Art

[0002] Cutting tools are used in workshop production, and the use of cutting tools will cause the blade to become blunt due to wear and other reasons. Cutting tools with blunt blades will affect the quality of the cut product at the cutting seam when used, so the blade needs to be polished to restore its sharpness.

[0003] The common grinding method is to use manual grinding, holding a whetstone to grind the blade, or rubbing the knife back and forth on the whetstone. However, industrial knives are often large in size and heavy in weight, which are not convenient for hand grinding, so a specific sharpener is required. The existing sharpener is a semi-automatic equipment similar to a machine tool, which requires workers to observe in real time and manually adjust the feed amount, which consumes manpower. Now a sharpener that can automatically feed for sharpening is needed. Utility Model Content

[0004] The purpose of the utility model is to provide an automatic knife sharpener to solve the problems raised in the above background technology.

[0005] An automatic knife sharpening machine is characterized in that it includes a frame, a clamping and fixing device is provided on the frame, a tool is fixed on the clamping and fixing device, one side of the top of the frame is rotatably connected to a rotating frame, a grinding device and a lubricating device are provided on the rotating frame, the lubricating device is arranged on one side of the grinding device, and the grinding device on the rotating frame will be pressed down and against the cutting edge of the tool under the action of gravity, thereby grinding the tool.

[0006] Preferably, the clamping and fixing device includes a fixing plate, both ends of the fixing plate are respectively penetrated by a fixing bolt, the fixing bolt passes through the fixing plate and is threadedly connected to the frame, a tool is clamped between the fixing plate and the frame, a support plate is provided on the side of the tool away from the cutting edge, one side of the support plate is fixedly connected to an adjusting screw, the adjusting screw is threadedly connected to the frame, and the supporting plate can be moved closer to or away from the fixing plate by rotating the adjusting screw.

[0007] Furthermore, the rotating frame is L-shaped as a whole, one end of the rotating frame is rotatably connected to one side of the frame, and the other end of the rotating frame is rotatably connected to a roller, an annular track is provided on the roller along the circumference, the annular track is elliptical, a first slider is slidably connected in the annular track, a grinding bracket is fixedly connected to the rotating frame, a slide rail is provided on the grinding bracket, a second slider is slidably connected in the slide rail, the first slider is rotatably connected to the second slider, the second slider is fixedly connected to a whetstone, a drive motor is fixedly connected to one side of the rotating frame, and the output shaft of the drive motor is fixedly connected to the roller.

[0008] Furthermore, a water tank is fixedly connected to the rotating frame, and a water pipe is provided on the water tank. The water pipe is guided along the rotating frame to the polishing bracket.

[0009] Furthermore, the driving motor is electrically connected to a speed controller.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the utility model utilizes a whetstone to grind and repair a tool, the tool is fixed on a frame, and the whetstone is arranged at the cutting edge of the tool through a rotating frame, the rotating frame is rotatably connected to the side of the frame away from the cutting edge of the tool, the whetstone naturally hangs on the tool under the action of gravity, and has a certain pressure on the tool, the whetstone is slidably connected to a slide rail as wide as the cutting edge through a second slider, the other end of the slider is slidably connected to an annular track of a roller, the annular track is elliptical, when the roller rotates, the elliptical annular track causes the slider to slide back and forth alternately left and right along the slide rail, and the sharpening wheel on the slider is just above the cutting edge of the tool, so the tool can be sharpened, and because the overall gravity of the rotating frame is applied to the sharpening wheel, the sharpening wheel will automatically feed, which is simple and practical.

[0011] A water tank is provided on the rotating frame, which not only increases the weight of the rotating frame and the sharpening efficiency of the grindstone, but also leads water to the slide rail through a water pipe, controls the water flow to drip slowly, and can soak the grindstone below to play a lubricating role and prevent friction heat from affecting the mechanical properties of the tool.

[0012] The drive motor is electrically connected to a speed controller, which can control the speed of the drive motor by controlling the input current and voltage of the drive motor, and then control the reciprocating speed of the grindstone to cope with different types of knives. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the specific structure of the rotating frame in the utility model;

[0015] Figure 3 This is a schematic diagram of the unfolded state of the rotating frame in the utility model;

[0016] Figure 4 It is a schematic diagram of the specific structure of the drum in the utility model.

[0017] In the figure: 1. frame; 11. limit table; 2. clamping device; 21. fixing plate; 22. fixing bolt; 23. support plate; 24. adjusting screw; 3. tool; 4. rotating frame; 41. roller; 411. circular track; 42. first slider; 43. grinding bracket; 44. second slider; 45. grindstone; 46. driving motor; 47. water tank; 48. water pipe. DETAILED DESCRIPTION

[0018] The following will be combined with specific embodiments and attached Figure 1-4 , clearly and completely describe the technical solutions in the embodiments of the utility model.

[0019] An automatic knife sharpening machine comprises a frame 1, which is roughly equivalent to a four-legged table. A clamping and fixing device 2 is provided at the top of the frame 1. The clamping and fixing device 2 comprises a fixing plate 21 and a supporting plate 23. Through holes are provided at both ends of the fixing plate 21. Fixing bolts 22 are provided in the two through holes of the fixing plate 21. Fixing threaded holes adapted to the two fixing bolts 22 are provided from top to bottom on the top surface of the frame 1. The space between the fixing plate 21 and the frame 1 can be changed by loosening or tightening the fixing bolts 22, so that the tool 3 can be pressed and fixed between the fixing plate 21 and the frame 1. A limit platform 11 is provided at one end of the top surface of the frame 1 away from the fixing plate 21. A supporting bolt hole is provided on the upper edge of the limit platform 11 in a horizontal reverse direction. An adjusting screw 24 is threadedly connected in the supporting bolt hole. The end of the adjusting screw 24 close to the fixing plate 21 is fixedly connected to the supporting plate 23. The supporting plate 23 is used to resist the back of the tool 3 to prevent the tool 3 from sliding and leaving the grinding position during the grinding process.

[0020] At the top of the frame 1, the same rotating frame 4 is rotatably connected to the left and right sides of the limit platform 11. The rotating frame 4 is L-shaped as a whole. One end of the rotating frame 4 is rotatably connected to the limit platform 11, and the other end of the rotating frame 4 is rotatably connected to a roller 41. The roller 41 can rotate freely relative to the rotating frame 4. An annular track 411 is provided on the roller 41 along the circumference. The shape of the annular track 411 is elliptical, and the two vertices of the annular track 411 are respectively located near the two end surfaces of the roller 41. As shown in the accompanying drawings, a grinding bracket 43 is fixedly connected to one end of the rotating frame 4 where the roller 41 is located. The grinding bracket 43 is located on the side close to the frame 1. A slide rail is provided on the grinding bracket 43. The opening direction of the slide rail is parallel to the axis of the roller 41. A second slider 44 is slidably connected in the slide rail. One end of the second slider 44 is rotatably connected to the first slider 42. The first slider 42 slides Connected in the annular track 411, when the roller 41 rotates, the first slider 42 will be pushed by the friction force of the roller 41 and can slide along the annular track 411, but the second slider 44 rotatably connected to the first slider 42 is constrained by the slide rail and can only slide horizontally. Therefore, the first slider 42 and the second slider 44 can only slide horizontally along the slide rail synchronously. At the same time, because the first slider 42 will continuously reciprocate along the annular track 411, the first slider 42 and the second slider 44 will show horizontal reciprocating sliding. A whetstone 45 is fixedly connected to the side of the second slider 44 away from the first slider 42. The whetstone 45 will be close to the blade position of the tool 3 on the frame 1 as the rotating frame 4 rotates. The whetstone 45 can be pressed against the blade position of the tool 3 by adjusting the clamping and fixing device 2. The whetstone 45 repeatedly grinds the blade as the first slider 42 slides, simulating manual grinding of the tool 3.

[0021] A driving motor 46 is fixedly connected to one side of the rotating frame 4, and the output shaft of the driving motor 46 is connected to the roller 41, so that the driving motor 46 can drive the roller 41 to rotate, and the rotation of the roller 41 will drive the first slider 42 and the second slider 44 to slide, thereby driving the grindstone 45 to reciprocate to grind the tool 3. The driving motor 46 is electrically connected to a speed controller, which is a prior art and can control the input voltage and input current of the driving motor 46 to control the rotation speed of the motor, and further control the grinding speed of the grindstone 45 on the tool 3. The weight of the motor is applied to the hinge point of the rotating frame 4 and the contact position of the grindstone 45 and the tool 3 through the rotating frame 4, respectively, which can make the grindstone 45 generate downward pressure, which can simulate the downward pressure during manual grinding and increase the grinding efficiency.

[0022] A water tank 47 is also fixedly connected to the rotating frame 4, and a water pipe 48 is provided at the lower position of the water tank 47. One end of the water pipe 48 is connected to the water tank 47, and the other end of the water pipe 48 is arranged along the frame of the rotating frame 4 to the middle part of the grinding bracket 43. A switch is provided on the water pipe 48. When the switch is turned on when the driving motor 46 is started, the water in the water pipe 48 will drip onto the grindstone 45 and the tool 3 below, which can cool and lubricate the tool 3 and the grindstone 45.

[0023] Except for the technical features described in the specification, all other technical features are known technologies to those skilled in the art.

[0024] In the present utility model, "up", "down", "left", "right", "front" and "back" are relative positions used to conveniently describe positional relationships, and therefore cannot be understood as absolute positions to limit the scope of protection.

[0025] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. An automatic knife sharpener, characterized in that: It includes a frame, a clamping and fixing device is provided on the frame, a tool is fixed on the clamping and fixing device, one side of the top of the frame is rotatably connected to a rotating frame, a grinding device and a lubricating device are provided on the rotating frame, the lubricating device is arranged on one side of the grinding device, and the grinding device on the rotating frame will be pressed down and pressed against the cutting edge of the tool under the action of gravity, thereby grinding the tool.

2. The automatic knife sharpener according to claim 1, characterized in that: The clamping and fixing device includes a fixing plate, both ends of the fixing plate are respectively penetrated by a fixing bolt, the fixing bolt penetrates the fixing plate and is threadedly connected to the frame, a tool is clamped between the fixing plate and the frame, a support plate is provided on the side of the tool away from the cutting edge, an adjusting screw is fixedly connected to one side of the support plate, the adjusting screw is threadedly connected to the frame, and the supporting plate can be moved closer to or away from the fixing plate by rotating the adjusting screw.

3. The automatic knife sharpener according to claim 2, characterized in that: The rotating frame is L-shaped as a whole, one end of the rotating frame is rotatably connected to one side of the frame, and the other end of the rotating frame is rotatably connected to a roller, an annular track is provided on the roller along the circumference, the annular track is elliptical, a first slider is slidably connected in the annular track, a grinding bracket is fixedly connected to the rotating frame, a slide rail is provided on the grinding bracket, a second slider is slidably connected in the slide rail, the first slider is rotatably connected to the second slider, the second slider is fixedly connected to a whetstone, a driving motor is fixedly connected to one side of the rotating frame, and the output shaft of the driving motor is fixedly connected to the roller.

4. The automatic knife sharpener according to claim 3, characterized in that: A water tank is fixedly connected to the rotating frame, and a water pipe is arranged on the water tank. The water pipe is guided along the rotating frame to the polishing bracket.

5. The automatic knife sharpening machine according to claim 4, characterized in that: The driving motor is electrically connected to a speed controller.

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