Automatic knife sharpener

Abstract

Knife sharpening is a technical activity and relates to the problems of angle, force and how long sharpening time, especially the angle puzzles countless housewives and kitchen workers, and if the method is not well mastered, a good knife can be sharpened to be blunt and damaged. The invention discloses an automatic knife sharpener which comprises a grinding mechanism used for grinding a knife, a moving mechanism used for moving the grinding mechanism, a clamping mechanism used for clamping the knife, a cooling mechanism used for cooling the knife in the grinding process, and a control mechanism used for controlling grinding, moving, lifting, knife clamping and cooling work. According to the automatic knife sharpener, a traditional knife stone sharpening method is changed, a novel stone sharpening method is adopted, an arc-shaped guide rail with the same radian as a cutting edge is additionally designed, and it is guaranteed that the radian of the cutting edge of a knife ground every time is kept consistent all the time. According to the technology, the problems of tool placement angle, cutting edge indentation, cooling and efficiency in the prior art can be solved, and the beneficial effects of being easy to clean and operate and the like are further achieved.

Description

Technical Field

[0001] The invention relates to the technical field of household appliances, and in particular to an automatic knife sharpener. Technical Background

[0002] A knife will become dull after being used for a long time and needs to be sharpened. Knife sharpening is something we often encounter in daily life, but there are some skills and methods to sharpen a knife. It involves the angle, strength and how long to sharpen. The angle, in particular, has troubled countless housewives and kitchen chefs. If the above methods are not mastered well, a good knife will be blunted or damaged.

[0003] Now most people still use the primitive method to sharpen knives, that is, use a whetstone to sharpen knives, the whetstone does not move, and the knife is moved by a person. This is a method that is difficult to master the skills, and many people do not know how to sharpen. Now there is a knife sharpener tool on the market, but the method is still the primitive method, that is, the knife moves while the knife sharpener does not move. This method also has disadvantages. The knife is not stable and is not easy to hold. It is okay when sharpening in the middle, with knife holders supporting it at the front and back, but it is not easy to hold when sharpening before and after, and one side is always suspended. Another disadvantage is that after sharpening the knife for a long time, the middle of the blade will become concave and cannot be automatically corrected, which makes it difficult to cut vegetables. The middle of the blade of a new knife or a normal knife is slightly arched outward, that is, an outer arc. Therefore, the new knife sharpeners on the market now also have flaws and shortcomings, which are not satisfactory. The automatic knife sharpener introduced by this scheme solves all the above problems, and adopts a new method in which the knife is fixed and the knife sharpener moves to sharpen the knife. Summary of the invention

[0004] The technical problems to be solved by the present invention include the problem of tool angle placement, the problem of tool placement stability, the problem of efficiency, the problem of cutting edge concavity, and the problem of temperature reduction.

[0005] The invention provides an automatic knife sharpener which has good stability, is easy to clean, easy to operate, high efficiency and good effect.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] The automatic knife sharpener 300 provided by the present invention includes a grinding mechanism 301 for grinding a tool, a moving mechanism 318 for providing operation for the grinding mechanism, a knife clamping mechanism 370 for clamping the tool to prevent it from shaking, a lifting mechanism 389 for being suitable for both large and small tools, a knife supporting mechanism 327 for supporting the tool to prevent it from falling, a cooling mechanism 360 for cooling the tool during the grinding process, and a control mechanism 339 for controlling the orderly operation of each mechanism.

[0008] The grinding mechanism includes a mobile grinding platform 302, a knife clamping mechanism 370, a knife supporting mechanism 327, a cooling mechanism 360 and a control mechanism 339;

[0009] The control mechanism controls and coordinates the grinding mechanism 301, the moving mechanism 318, the knife clamping mechanism 370, the lifting mechanism 389 and the cooling mechanism 360 to work in an orderly manner;

[0010] The machine base 303 sits on the base water tank 368 , the machine cover 371 is installed on the machine base, the movable guide rail 319 is installed inside the machine base, and the movable grinding platform 302 is installed on the movable guide rail 319 .

[0011] Furthermore, the grinding mechanism 301 includes a mobile grinding platform 302, a platform plate 304, a gear box 305, a gear box enclosure 306, a sanding belt bracket 309, a sanding belt tensioning wheel 308, a sanding belt driving wheel 310 and a grinding motor 312. The mobile grinding platform 302 is provided with a platform plate 304, and the platform plate 304 is mounted on a mobile slider 322 of the mobile mechanism. The gear box 305 is mounted on the platform plate. The gear box is surrounded by a gear box enclosure 306 to form a box body. The sanding belt bracket 309 is mounted on the gear box enclosure 306. The sanding belt tensioning wheel 308 is mounted on the sanding belt bracket 309. The sanding belt driving wheel and the sanding belt driving wheel are connected together by a main drive wheel transmission shaft 311. The sanding belt driving wheel passes through the gear box enclosure and extends into the gear box. A grinding belt 315 is arranged between the sanding belt tensioning wheel and the driving wheel. The tensioning wheel is equipped with a tensioning spring, and the tensioning spring acts on the tensioning sand belt to make The grinding work can be carried out normally, and the other function is to replace the abrasive belt; the two groups of grinding abrasive belts 315 are installed on the abrasive belt bracket 309 in a front-back and left-right cross-overlapping manner, and the grinding abrasive belts 315 can be seen from the front side and the top three sides in an X-shaped arrangement. The X-shaped feature is that the intersection point is infinitely close, and the ground blade is sharper. The size of the X-shaped intersection angle is adjustable; the grinding motor 312 is fixed to the outside of the gear box enclosure 306, and a grinding gear 313 is provided in the grinding drive shaft 314. The grinding drive shaft passes through the gear box enclosure and extends to the outside to the water pump 361. The grinding drive shaft 314 also plays a role in driving the water pump. The middle grinding gear is meshed with the abrasive belt driving wheel 310 in the gear box. The grinding motor 312 drives the grinding gear 313 when it works, and the grinding gear rotates to drive the abrasive belt driving wheel 310, and the abrasive belt driving wheel drives the grinding abrasive belt 315 to work and grind the tool.

[0012] In addition to the grinding belt 315, the grinding material can also be a grinding wheel 316. A transmission shaft extends from the gear box, one end of which is equipped with a gear, which meshes with the grinding gear 313, and the other end extends out of the gear box enclosure 306 and is equipped with a spring. The grinding wheel is installed on this end of the spring, and the spring plays the role of starting buffer and facilitating the insertion of the tool into the bottom of the V-shaped angle between the two grinding wheels.

[0013] Furthermore, the moving mechanism 318 includes a moving guide rail 319, a moving slider 322, a moving rack 320, a guide rail bracket 321 and a moving motor 323. The moving slider is mounted on the moving guide rail, the moving grinding platform 302 is mounted on the moving slider, the moving guide rail is mounted on the guide rail bracket 321, and the guide rail bracket is mounted on the front and rear wing plates 325 of the machine base. The moving guide rail is in an outer arc shape, and the arc is consistent with the blade edge. A moving rack 320 is installed on the moving guide rail, and the moving motor is mounted on the platform plate 304. The moving gear 324 passes through the platform plate and meshes with the moving rack 320;

[0014] The arc guide rail, i.e., the movable guide rail 319, is the running track of the movable grinding platform. When the movable grinding platform runs on it, the curvature of the blade edge ground each time remains consistent. Even if the blade edge is deformed or uneven, the unevenness will be completely corrected after grinding. The arc guide rail, i.e., the movable guide rail 319, plays a guiding and correcting role, ensuring that the tool edge remains intact for a long time and is easy to use and durable.

[0015] Furthermore, the tool clamping mechanism 370 includes a fixed plate 383, a fixed bracket 384, a movable plate 377, a movable bracket 378, a balancing transmission shaft 376 and a tool inlet 373; the tool inlet is arranged on the machine cover 371 plate, is trumpet-shaped, wide at the top and narrow at the bottom, the fixed plate and the fixed bracket are installed on the lower left side of the tool inlet, the movable plate, the movable bracket and the balancing transmission shaft are installed on the lower right side of the tool inlet, the fixed plate 383 is installed on the fixed bracket 384, the fixed bracket is installed on the machine cover, the movable plate 377 is installed on one end of the balancing transmission shaft 376, and the two movable plates are connected with a movable plate connecting rod 380, the clamping mechanism also includes a manual clamping switch 374 and an electric clamping switch 375, the manual The movable knife clamp switch 374 is installed outside the machine cover, and the tail of the switch is pressed against one end of the balance transmission shaft 376. The clamping mechanism 370 also includes a vertical transmission rod 379, a knife clamp motor 381, a knife clamp driving wheel 382, ​​an electric clamping switch 375 and a knife sharpening start switch 386. One end of the vertical transmission rod is movably installed on the machine cover, and the other end is connected to the knife clamp driving wheel 382 and the knife clamp motor 381. There is a hole in the middle of the vertical transmission rod, and the balance transmission rod 376 passes through the hole of the vertical transmission rod. One end of the balance transmission rod is equipped with a movable disk 377, and the other end is against the manual knife clamp switch 374; the knife sharpening start switch is installed on the machine cover control panel 388, and the control panel is also equipped with an electric clamping switch 375 and a power indicator light 387;

[0016] The support of the fixed plate 383 and the movable plate 377 is a live twist structure, which can swing vertically and stand at a certain angle on both sides below the tool entrance 373, which is wide at the top and narrow at the bottom; tool position reference lines 385 are marked on both sides of the tool entrance, and the purpose of setting the position reference lines 385 is to require the tool to be placed in the middle position of the tool entrance as much as possible;

[0017] In order to achieve a better clamping effect, the chuck uses a set of fixed discs 383 and a set of movable discs 377. Usually, only the movable disc is operated. According to needs, both discs can be made into movable structures.

[0018] The tool clamping mechanism 370 is a very important part in the structure of the automatic tool sharpener. If the tool is not clamped, the grinding work cannot be carried out. If the tool is not clamped, the internal mechanism may be damaged. The clamping mechanism is the prerequisite for the grinding work, so the clamping mechanism is very important.

[0019] Furthermore, the knife support mechanism 327 includes a knife support bracket 329, a bracket slider 330, a balanced knife support arm 331, a fine-tuning screw 332, a knife support fine-tuning device 336 and an instrument mounting plate 328, wherein the instrument mounting plate is mounted on the platform plate 304, the bracket slider is mounted on the instrument mounting plate 328, the knife support bracket 329 is mounted on the bracket slider 330, and a balanced knife support arm 331 extends from each side of the knife support bracket, and a balance knife support arm 331 extends from the middle It includes a control rod 340, a knife support fine-tuning device 336 is provided under the knife support bracket, the knife support fine-tuning device is provided with a screw mouth, a fine-tuning screw 332 is installed on the screw mouth, the knife support fine-tuning device also includes a fine-tuning switch 337 and a fine-tuning pulley 333, a cam bracket 335 is installed in the middle of the movable guide rail 319, a fine-tuning protrusion 334 is installed on the cam bracket 335, the fine-tuning protrusion is provided with a one-way structure, and can be raised and lowered; the fine-tuning protrusion is connected to the fine-tuning pulley 333;

[0020] The tool support bracket 329 and the balanced tool support arm 331 are temporary tool support brackets, which are arranged below the tool entrance to temporarily support the tool put in from the tool entrance. When the grinding work starts, the tool clamping mechanism 370 clamps the tool tightly, and the balanced tool support arm 331 descends under the action of the fine-tuning pulley 333 and the fine-tuning cam to avoid blocking the grinding work. The balanced tool support arm 331 is also an important adjustment device for deepening or shallowing the blade edge. By adjusting the fine-tuning screw 332 and the tool support fine-tuning device 336, the tool can be ground deeper or shallower.

[0021] Further, the lifting mechanism 389 includes a lifting guide rail 390, a lifting slider 391, a lifting rack 392 and a lifting adjuster 397; the lifting slider is installed on the lifting guide rail, the lifting guide rail is installed on the front and rear wing plates of the machine base 303, the lifting guide rail and the lifting slider are each one group at the front and rear, the guide rail bracket 321 is installed on the lifting slider 391, and the lifting slider is installed with a lifting rack 392; the lifting adjuster 397 includes a lifting transmission rod 393, a lifting gear 394 and a lifting knob 395, both ends of the lifting transmission rod 393 are installed on the front and rear wing plates of the machine base, and a lifting knob is provided at the front end. For the convenience of adjustment, the lifting knob 395 passes through the machine base plate and is exposed outside the machine base plate. The adjusting knob is provided with a lock to ensure that the set height of the movable guide rail will not move; both ends of the lifting transmission rod 393 are provided with lifting gears 394, and the lifting gears are meshed with the lifting rack 392;

[0022] Because knives come in different sizes, a lifting mechanism 389 is designed to accommodate more knives. Small knives are adjusted upwards, and large knives are adjusted downwards. Since the regulator is not used frequently and to save production costs, the lifting regulator can be adjusted manually, and the manual adjustment method is mainly introduced here.

[0023] Further, the cooling mechanism 360 includes a water pump mounting plate 362, a bottom water storage tank 368, a water pump impeller 363 and a water pump 361, the water pump is mounted on the water pump mounting plate, the water pump mounting plate is mounted on the platform plate 304, the water pump impeller is mounted on the tail end of the grinding transmission shaft 314, the water pump impeller is docked with the water pump, the water pump includes a water inlet pipe 365 below, and two water spray pipes above, the water spray pipes are a front water spray pipe 366 and a back water spray pipe 367, one end of the two water spray pipes is mounted on the equipment mounting plate, and the other end is mounted on the water pump 361, the bottom water storage tank 368 is mounted below the machine base 303, the water storage tank is equipped with a water level observation hole 369, the water inlet pipe is connected to the bottom water storage tank, and the water storage tank is used to hold water and sand generated by grinding;

[0024] The cooling mechanism cools and lubricates the grinding mechanism 301 when grinding the tool, and its function is to protect the tool blade and the abrasive belt from being burned by the temperature and to achieve a better grinding effect; the grinding drive shaft 314 works for the grinding mechanism while also working for the water pump 361 of the cooling mechanism.

[0025] Furthermore, the control mechanism 339 includes a control rod 340, a one-way rack 341, a control bracket 343, a mechanical disc operation controller 344 and a turntable gear 342. The control bracket is mounted on the device mounting plate 328. The mechanical disc operation controller is rotatable and has a rotating shaft in the middle. One end of the rotating shaft is mounted on the device mounting plate 328, and the other end is mounted on the control bracket 343. The mechanical disc operation controller 344 is provided with a rotating gear 342. The control rod is connected to the knife support bracket 329. The control rod is provided with The one-way rack 341 is meshed with the rotating gear. The control bracket 343 is equipped with electrode contacts, which include a common fire electrode input point 347, a moving fire electrode output point 348, a grinding fire electrode output point 349, a knife clamping fire electrode output point 350 and a knife loosening fire electrode input point 351. The mechanical disc operation controller 344 is disc-shaped. The mechanical disc operation controller includes a moving power-off area 354, a grinding power-off area 355, a knife clamping power-off area 356 and a knife loosening relay area 357. The electrode contacts touch the mechanical disc operation controller;

[0026] The operation controller can be a mechanical disc operation controller 344, a mechanical cylinder operation controller 398, or a single-chip electronic controller 399. Here, the mechanical disc operation controller is mainly introduced. The mechanical disc operation controller is provided with a relay area and a power-off area. When the fine-tuning pulley 333 moves to the position of the fine-tuning cam 334, the turntable gear 342 rotates once under the action of the one-way rack 341, and the disc operation controller also rotates once. The relay area or the power-off area of ​​the operation controller corresponding to the electrode contact changes accordingly. When the contact is in the power-off area, the operation stops, and when the contact is in the relay area, the operation starts or continues. The operation or stop of some mechanisms of the automatic sharpener is controlled and executed by the control mechanism 339; the mechanical disc operation controller controls the grinding mechanism, the moving mechanism, the lifting mechanism, the cooling mechanism, the knife clamping mechanism and the knife loosening mechanism to work in an orderly manner;

[0027] The front and rear fenders of the machine base and the tool mounting plate are also equipped with a grinding stroke sensor 358. When the stroke sensor runs to the edge of the tool, the stroke sensor senses and instructs the mobile grinding platform 302 to reverse the grinding work. When it reaches the edge of the tool on the other side, the mobile grinding platform reverses and grinds in the other direction until the grinding work is completed.

[0028] Furthermore, the arc-shaped movable guide rail can be replaced according to different blade curvatures.

[0029] In summary, the technical solution of the automatic knife sharpener of the present invention has the following beneficial effects: good stability, repairable tool notches, low failure rate, easy cleaning, easy operation, good effect and quick results. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a bird's-eye view of the whole machine of the present invention

[0031] Figure 2 This is a front sectional view of the whole machine of the present invention

[0032] Figure 3 This is a right side sectional view of the whole machine of the present invention

[0033] Figure 4 This is a sectional view of the left side of the whole machine of the present invention

[0034] Figure 5 This is a top view of the whole machine of the present invention

[0035] Figure 6 This is a large-scale diagram of the mechanical disc operation controller of the present invention

[0036] Figure 7 This is a large-scale diagram of the mechanical cylindrical operation controller of the present invention

[0037] Figure 8 Schematic diagram of the electronic operation controller of the single chip microcomputer of the present invention

[0038] Fig. 9 Schematic diagram of grinding wheel for grinding material of the present invention

[0039] The following is a comparison list of figure numbers and names: 300 automatic sharpener; 301 grinding mechanism; 302 mobile grinding platform; 303 machine base; 304 platform plate; 305 gear box; 306 gear box enclosure; 307 abrasive belt driving wheel; 308 abrasive belt tensioning wheel; 309 abrasive belt bracket; 310 abrasive belt driving wheel; 311 main driving wheel transmission shaft; 312 grinding motor; 313 grinding gear; 314 grinding transmission shaft; 315 grinding belt; 316 grinding wheel; 318 moving mechanism; 319 moving guide rail; 320 moving rack; 321 guide rail bracket; 322 moving slider; 323 moving motor; 324 moving gear; 325 front and rear wings of the machine base; 327 knife support mechanism; 328 tool mounting plate; 329 knife support bracket; 330 bracket slide block; 331 knife support balance arm; 332 fine-tuning screw; 333 fine-tuning pulley; 334 fine-tuning bump; 335 cam bracket; 336 knife support fine-tuning device; 337 fine-tuning switch; 339 control mechanism; 340 control lever; 341 one-way rack; 342 rotating gear; 343 control bracket; 344 mechanical disc operation controller; 345 common fire pole input terminal; 346 relay area; 347 common fire pole input point; 348 moving fire pole output point; 349 grinding fire pole output point; 350 knife clamping fire pole Output point; 351 knife loosening fire pole input point; 352 knife loosening fire pole output point; 354 ​​mobile power-off area; 355 grinding power-off area; 356 knife clamping power-off area; 357 knife loosening relay area; 358 mobile stroke induction switch; 360 cooling mechanism; 361 water pump; 362 water pump mounting plate; 363 water pump impeller; 364 water spray pipe; 365 water inlet pipe; 366 front water spray pipe; 367 back water spray pipe; 368 base water tank; 369 water level observation hole; 370 clamping mechanism; 371 machine cover; 372 machine cover switch; 373 tool inlet; 374 manual clamping switch; 375 electric clamping switch; 376 balance Transmission shaft; 377 movable disk; 378 movable bracket; 379 vertical transmission rod; 380 movable disk connecting rod; 381 clamping motor; 382 knife clamping drive wheel; 383 fixed disk; 384 fixed disk bracket; 385 position reference line; 386 knife sharpening start switch; 387 working indicator light; 388 control panel; 389 lifting mechanism; 390 lifting guide rail; 391 lifting slider; 392 lifting rack; 393 lifting transmission rod; 394 lifting gear; 395 lifting knob; 396 lifting height observation hole; 397 lifting adjuster; 398 mechanical cylindrical operation controller; 399 single chip microcomputer electronic operation controller. DETAILED DESCRIPTION

[0040] The technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the first embodiment of the present invention, but it does not constitute a limitation on the protection scope of the present invention.

[0041] Attached Figure 1This is a bird's-eye view of the automatic knife sharpener of the present invention, and the outline of the entire machine can be seen, including a lower base, that is, a water tank 368, a middle base 303, and an upper cover 371. A tool entrance 373 is provided on the cover, and a tool placement position reference line 385 is provided at the entrance. A manual clamping switch 374 is installed on the side of the cover, and a control panel 388 is provided in front of the base. The panel is provided with an electric sharpening start switch 386 and a working indicator light 387, and a lifting knob 395 is provided below. The base water tank is provided with a water level observation hole 369.

[0042] Attached Figure 2 This is a front cross-sectional view of the automatic knife sharpener of the present invention, showing some structures on the front of the whole machine, including a bottom, i.e., a water storage tank 368, a middle machine base 303, an upper machine cover 371, and the machine cover is provided with a tool inlet 373, a clamping mechanism 370 and a manual clamping switch 374;

[0043] The clamping mechanism 370 includes a movable plate 377, a movable plate balancing transmission shaft 376, a transmission shaft movable bracket 378, a fixed plate 383, a fixed plate bracket 384, and an electric clamping motor 381; the fixed plate and the movable plate are respectively installed on the left and right sides of the tool entrance, the fixed plate can move, but the bracket for installing the fixed plate does not move, the plate of the movable plate can move, and the bracket can also move;

[0044] The intermediate machine base structure includes a moving mechanism 318, a grinding mechanism 301, a knife supporting mechanism 327, a lifting mechanism 389 and a cooling mechanism 360;

[0045] The moving structure 318 includes a moving guide rail 319 , a moving rack 320 , and a moving slider 322 ;

[0046] The grinding mechanism 301 includes a movable grinding platform 302, a platform plate 304, an equipment mounting plate 328, a gear box 305, a grinding belt 315 and a grinding motor 312. Two sets of grinding belts 315 are installed on the gear box in a front-to-back and left-to-right cross-overlapping manner. They can be seen from the front, side and top three sides to be arranged in an X shape. The X shape is characterized by making the intersection point infinitely close, so that the ground blade is sharper, and the X-shaped intersection angle is adjustable;

[0047] The knife support mechanism 327 includes a knife support bracket 329, a knife support balance arm 331, a fine-tuning pulley 333, a fine-tuning cam 334 and a cam bracket 335;

[0048] The lifting mechanism 389 can be seen here to include a lifting gear 394 and a lifting transmission rod 393;

[0049] The cooling mechanism 360 can be seen here to include a water pump 361 and a water pump mounting bracket 362;

[0050] It can be seen that the grinding mechanism 301 is installed on the moving mechanism 318, that is, the platform plate 304 is installed on the moving slider 322, the equipment mounting plate 328 is installed on the platform plate, the grinding mechanism is installed on the left side of the equipment mounting plate, the knife supporting mechanism 327 is installed on the right side, and the cooling mechanism 360 is installed on the platform plate.

[0051] Attached Figure 3 This is a right side cross-sectional view of the automatic knife sharpener of the present invention, and some structures of the right side cross-sectional view of the whole machine can be seen, including the bottom, i.e., the water storage tank 368, the middle machine base 303, and the upper machine cover 371.

[0052] The upper cover 371 shows a clamping mechanism 370 including a movable plate 377, a movable plate connecting rod 380, and a knife clamping motor 381; the intermediate base structure includes a moving mechanism 318, a grinding mechanism 301, and a lifting mechanism 389;

[0053] The moving mechanism 318 can be seen to include a moving guide rail 319 , a moving rack 320 , a guide rail bracket 321 , a moving slider 322 and a moving motor 323 ;

[0054] The grinding mechanism 301 includes a movable grinding platform 302, a platform plate 304, an equipment mounting plate 328, a gear box 305, a grinding belt 315 and a grinding motor 312. Two sets of grinding belts 315 are installed on the gear box in a front-to-back and left-to-right cross-overlapping manner. They can be seen from the front, side and top three sides to be arranged in an X shape. The X shape is characterized by making the intersection point infinitely close, so that the ground blade is sharper, and the X-shaped intersection angle is adjustable;

[0055] The lifting mechanism 389 can be seen here to include a lifting rail 390, a lifting slider 391, a lifting knob 395 and a lifting transmission rod 393;

[0056] It can be seen that the lifting mechanism 389 is provided with a lifting guide rail 390 and a lifting slider 391. The lifting guide rail is installed on the front and rear end panels of the machine base, and the lifting slider is installed on the lifting guide rail; the moving mechanism is provided with a moving guide rail 319 and a guide rail bracket 321. The moving guide rail is installed on the guide rail bracket, and the guide rail bracket is installed on the lifting slider 391; the grinding mechanism 301 is installed on the moving mechanism 318, that is, the platform plate is installed on the moving slider, the equipment mounting plate is installed on the platform plate, the gear box is installed on the platform plate, and the grinding belt 315 is installed on the gear box panel 306.

[0057] Attached Figure 4 This is a left side cross-sectional view of the automatic knife sharpener of the present invention, and some structures of the left side cross-sectional view of the whole machine can be seen, including a bottom water storage tank 368, a middle machine base 303, and an upper machine cover 371.

[0058] The upper cover 371 can be seen here that the clamping mechanism includes a fixing plate 383 and a fixing plate bracket 384;

[0059] The intermediate machine base structure includes a lifting mechanism 389, a moving mechanism 318, a grinding mechanism 301, a knife supporting mechanism 327 and a control mechanism 339;

[0060] The lifting mechanism 389 can be seen here to include a lifting rail 390, a lifting slider 391, a lifting knob 395 and a lifting transmission rod 393;

[0061] The moving structure 318 can be seen here to include a moving guide rail 319 , a guide rail bracket 321 , and a moving slider 322 ;

[0062] The grinding mechanism 301 can be seen here to include a movable grinding platform 302, a platform plate 304, and an equipment mounting plate 328;

[0063] It can be seen here that the knife support mechanism 327 includes a knife support bracket 329, a bracket slider 330, a balanced knife support arm 331, a fine-tuning screw 332, a knife support fine-tuner 336 and an instrument mounting plate 328; the instrument mounting plate is installed on the platform plate 304, the bracket slider is installed on the instrument mounting plate 328, the knife support bracket 329 is installed on the bracket slider 330, two balanced knife support arms 331 extend on both sides of the knife support bracket, including a control rod 340 in the middle, a knife support fine-tuner 336 is provided under the knife support bracket, the knife support fine-tuner is provided with a screw mouth, and the screw mouth is installed with a fine-tuning screw 332, the knife support fine-tuner also includes a fine-tuning switch 337 and a fine-tuning pulley 333, a cam bracket 335 is installed in the middle of the movable guide rail 319, a fine-tuning cam 334 is installed on the cam bracket 335, and the fine-tuning cam is docked with the fine-tuning pulley 333.

[0064] The control mechanism 339 can be seen here to include a control lever 340 , a one-way rack 341 , a control bracket 343 , an operation controller 344 and a turntable gear 342 .

[0065] It can be seen that the lifting mechanism 389 is provided with a lifting guide rail 390 and a lifting slider 391. The lifting guide rail is installed on the front and rear end panels of the machine base 303, and the lifting slider is installed on the lifting guide rail; the moving mechanism 318 is provided with a moving guide rail 319 and a guide rail bracket 321. The moving guide rail is installed on the guide rail bracket, and the guide rail bracket is installed on the lifting slider 391; the grinding mechanism 301 is installed on the moving mechanism 318, that is, the platform plate is installed on the moving slider, the instrument mounting plate 328 is installed on the platform plate 304, the knife support mechanism 327 is installed on the instrument mounting plate, and the control mechanism 339 is installed on the knife support mechanism 327.

[0066] Attached Figure 5 This is a top view of the automatic knife sharpener of the present invention, and some structures of the whole machine can be seen, including a clamping mechanism 370, a grinding mechanism 301 and a moving mechanism 318.

[0067] The moving mechanism 318 can be seen here to include a moving guide rail 319 and a guide rail bracket 321 .

[0068] The grinding mechanism 301 can be seen here to include a movable grinding platform 302, a platform plate 304, and an equipment mounting plate 328;

[0069] The clamping mechanism 370 can be seen here to include a movable disk 377, a movable disk balancing transmission shaft 376, a transmission shaft movable bracket 378, a movable disk connecting rod 380, a fixed disk 383, a fixed disk bracket 384 and a knife clamping motor 381;

[0070] It can be seen that the fixed disk and the movable disk are respectively installed on the left and right sides of the tool entrance 373. The fixed disk can move, but the fixed disk bracket is installed and does not move. The movable disk can move, and the bracket will also move.

[0071] Attached Figure 6 The schematic diagram of the mechanical disk operation controller 344 of the present invention includes a control rod 340, a one-way rack 341, a control bracket 343, an operation controller 344 and a turntable gear 342; the control bracket is mounted on the tool mounting plate 328, the operation controller is rotatable, and a rotating shaft is provided in the middle, one end of the rotating shaft is mounted on the tool mounting plate 328, and the other end is mounted on the control bracket 343; the operation controller 344 is provided with a rotating gear, the control rod is connected to the knife support bracket 329, and the control bracket 343 is provided with a rotating gear. The control rod is equipped with a one-way rack, which is meshed with the rotating gear. The control bracket 343 is equipped with electrode contacts, which include a common fire electrode input point 347, a moving fire electrode output point 348, a grinding fire electrode output point 349, a knife clamping fire electrode output point 350 and a knife loosening fire electrode input point 351; the operation controller 344 is disc-shaped, and the operation controller includes a moving power-off area 354, a grinding power-off area 355, a knife clamping power-off area 356 and a knife loosening relay area 357, and the electrode contacts touch the operation controller.

[0072] Attached Figure 7 This is a large-scale diagram of the mechanical cylindrical operation controller 398 of the present invention. The operation controller can be mechanically disc controlled or mechanically cylinder controlled.

[0073] Attached Figure 8 This is a schematic diagram of the single-chip electronic operation controller 399 of the present invention. The operation controller can be a mechanical disk controller 344 or a mechanical cylinder operation controller 398, or a single-chip electronic controller 399.

[0074] Attached Fig. 9 Schematic diagram of the grinding wheel for grinding material of the present invention. In addition to the grinding belt 315, the grinding wheel 316 can also be used for the grinding material. The grinding wheel is installed on the gear box 305. The grinding wheel is provided with a handle, and a gear is installed at one end of the handle. The gear extends into the gear box enclosure 306 and meshes with the grinding motor 312. The grinding motor drives the grinding wheel to grind the tool.

[0075] The above is an introduction to the various mechanisms of the automatic knife sharpener. Now let's make a systematic description of the operating process:

[0076] The automatic knife sharpener 300 is a household appliance, mainly used for sharpening knives in the kitchen. Kitchen knives will become dull after being used for a long time, and they need to be sharpened, so this automatic knife sharpener was launched.

[0077] If it is the first time to use, the first step is to power on the automatic knife sharpener 300 and check whether there is enough water in the base water tank 368. If there is no water, add water. Then put the cleaned kitchen knife into the automatic knife sharpener from the knife entrance 373, and place the kitchen knife in the middle according to the entrance position reference line 385; at this time, the knife falls on the knife support balance arm 331, and the knife support balance arm supports the knife; then press the electric clamping switch 375 on the control panel 388 to clamp the knife, or use the manual clamping switch 374 to clamp the knife. After the kitchen knife is clamped, turn on the knife sharpening start switch 386 on the control panel to start sharpening.

[0078] After the knife sharpening start switch 386 is pressed, the mobile motor 323 and the grinding motor 312 are temporarily energized, the mobile motor starts working, the mobile grinding platform starts working and moving, the synchronous fine-tuning pulley 333 leaves the fine-tuning cam 334, the knife support bracket 329, the control rod 340 and the one-way rack 341 slide downward, and the one-way rack slides downward to drive the rotating gear 342, that is, the mechanical turntable operation controller 344, to rotate, the mobile motor contacts and the grinding motor contacts are in the power-off zone and immediately run to the relay zone 346, leaving the power-off zone, the knife clamping switch first works to clamp the tool, and then the grinding motor 312 and the mobile motor 323 work at the same time, and power is turned on to enter normal operation, the knife support balance arm 331 is lowered, and then the grinding motor 312 works to grind, the cooling mechanism 360 sprays water for cooling, and all the grinding supporting work is carried out synchronously, and the mobile grinding platform 302 is usually parked. When the machine is waiting in the middle of the moving guide rail, the starting grinding is from the middle to both sides (for the convenience of description, it is referred to as the left, middle and right here). When the left edge of the tool is ground, the stroke sensor switch 358 senses and instructs the moving motor 323 to reverse, and then grind from the left to the middle and then to the right. When the right edge of the tool is ground, the stroke sensor senses and instructs the moving motor to reverse again, and then grinds from the right to the middle and then stops working. The two back and forth moving grinding platforms return to the midpoint, which is also the end point. While the moving grinding platform 302 is grinding the tool, the control rod 349 and the rotating gear 342 are also operating synchronously up and down. When the mechanical disc operation controller 344 rotates to the power-off area and the tool release switch position, the clamping mechanism releases the tool, and a grinding cycle is completed. After the tool is ground, it can be manually or electrically released to take the tool for use. If it needs to be ground again, press the tool grinding start switch 386 to repeat the grinding work.

[0079] When the work is finished, the fine-tuning pulley 333 just stops on the fine-tuning protrusion 334 again, and the steps of automatically loosening the knife and turning off the water are performed, or the knife is loosened manually, and the work is finished and waits for the next instruction.

[0080] The grinding water and dust after grinding fall into the water storage tank 368 below, and the grinding water is filtered and reused.

[0081] When the grinding belt 315 is used for a long time and needs to be replaced, open the machine cover, press the spring switch of the belt tensioner, remove the old belt and replace it with a new one. When replacing the belt, replace two belts at a time.

[0082] When it is found that the tool grinding effect is not good, the fine adjustment screw 332 in the tool support fine adjustment device 336 can be adjusted to adjust the tool to be placed deeper or shallower, that is, to grind deeper or shallower, until the best effect is achieved.

[0083] Because the knives are large and small, in order to accommodate more knives, a lifting mechanism 389 is designed, and small knives are adjusted upwards, and large knives are adjusted downwards; because the frequency of use of the regulator is not high, and in order to save production costs, the lifting regulator can be adjusted manually.

[0084] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An automatic knife sharpener Features: The automatic knife sharpener includes a grinding mechanism for grinding the knife, a moving mechanism for providing movement for the grinding mechanism, a knife clamping mechanism for clamping the knife to prevent it from shaking, a lifting mechanism for adjusting the size of the knife, a knife supporting mechanism for supporting the knife to prevent it from falling, a cooling mechanism for cooling the knife during the grinding process, and a control mechanism for controlling the orderly operation of each mechanism; The grinding mechanism includes a mobile grinding platform, a knife clamping mechanism, a knife supporting mechanism, a cooling mechanism and a control mechanism; The control mechanism controls and coordinates the grinding mechanism, the moving mechanism, the tool clamping mechanism, the lifting mechanism and the cooling mechanism to work in an orderly manner.

2. The automatic knife sharpener according to claim 1, Features The grinding mechanism 301 includes a mobile grinding platform 302, a platform plate 304, a gear box 305, a gear box enclosure 306, a sanding belt bracket 309, a sanding belt tensioning wheel 308, a sanding belt driving wheel 310 and a grinding motor 312. The platform plate 304 is mounted on the mobile grinding platform 302, and the mobile grinding platform is mounted on a mobile slider 322 of the mobile mechanism. The gear box 305 is mounted on the platform plate. The gear box is surrounded by the gear box enclosure 306 to form a box body. The sanding belt bracket 309 is mounted on the gear box enclosure 306, and the sanding belt tensioning wheel 308 is mounted on the sanding belt bracket 309. The sanding belt driving wheel and the sanding belt driving wheel are connected together by the main drive wheel transmission shaft 311, and the sanding belt driving wheel passes through the gear box enclosure and is installed in the gear box. There is a grinding belt 315 between the belt tensioning wheel and the driving wheel, and the tensioning wheel 308 is equipped with a tensioning spring. The two groups of grinding belts 315 are installed on the belt bracket 309 in a front-to-back and left-to-right cross-overlapping manner, and can be seen from the front, side and top three sides to be arranged in an X shape, and the X-shaped cross angle is adjustable; the grinding motor 312 is fixed to the outside of the gear box enclosure, and a grinding gear 313 is arranged in the grinding drive shaft 314. The grinding drive shaft passes through the gear box enclosure and extends to the outside to the water pump 361. The middle grinding gear 313 is meshed with the belt driving wheel 310 in the gear box. The grinding motor 312 rotates to drive the grinding gear, and the grinding gear rotates to drive the belt driving wheel. The belt driving wheel drives the grinding belt to work and grinds the tool; The grinding mechanism 301 can be installed in the middle of the movable guide rail 319, or can be installed at both ends of the movable guide rail; In addition to the grinding belt 315, the grinding material can also be ground with a grinding wheel 316. A transmission shaft extends from the gear box, one end of which is equipped with a gear that meshes with the grinding gear 313, and the other end extends out of the gear box and is equipped with a spring, and the grinding wheel is installed on this end of the spring.

3. The automatic knife sharpener according to claim 1, Features The moving mechanism 318 includes a moving guide rail 319, a moving slider 322, a moving rack 320, a guide rail bracket 321 and a moving motor 323. The moving slider is installed on the moving guide rail, the moving grinding platform 302 is installed on the moving slider, the moving guide rail is installed on the guide rail bracket, and the guide rail bracket is installed on the front and rear wing plates 325 of the machine base. The moving guide rail is in an inner arc shape, and the arc is consistent with the blade edge. A moving rack 320 is installed on the moving guide rail, and the moving motor is installed on the platform plate 304. The gear of the moving motor passes through the platform plate and engages with the moving rack.

4. The automatic knife sharpener according to claim 1, Features The tool clamping mechanism 370 includes a fixed disk 383, a fixed disk bracket 384, a movable disk 377, a movable disk bracket 378, a balancing transmission shaft 376 and a tool inlet 373; the tool inlet is arranged on the machine cover plate, is trumpet-shaped, wide at the top and narrow at the bottom, the fixed disk and the fixed bracket are installed on one side below the tool inlet, the movable disk, the movable bracket and the balancing transmission shaft are installed on the other side below the tool inlet, the fixed disk is installed on the fixed bracket, the fixed bracket is installed on the machine cover 371, the movable disk is installed on one end of the balancing transmission shaft 376, and the movable disk connecting rod 380 is connected between the two movable disks. The clamping mechanism also includes a manual clamping switch 374 and an electric The clamping switch 375 is installed outside the machine cover, and the tail of the switch is pressed against one end of the balance transmission shaft. The clamping mechanism 370 also includes a vertical transmission rod 379, a knife clamping motor 381, a knife clamping driving wheel 382, ​​an electric clamping switch 375 and a knife sharpening start switch 386. One end of the vertical transmission rod is flexibly connected to the machine cover, and the other end is connected to the knife clamping driving wheel 382 and the knife clamping motor 381. There is a hole in the middle of the vertical transmission rod, and the balance transmission rod 376 passes through the hole set in the vertical transmission rod; the knife sharpening start switch 386 is installed on the machine cover control panel 388, and the control panel is also equipped with an electric clamping switch 375 and a power indicator light 387; The support of the fixed plate 383 and the movable plate 377 is a movable twist structure, which can swing vertically, and stand on both sides below the tool inlet 373 at an angle of about 15 degrees, with a width at the top and a narrowness at the bottom. The fixed plate can be made into a movable plate according to needs; The manual clamping switch can be arranged on the left side, the right side, or the top according to the needs. The electric clamping switch 375 and the manual clamping switch 374 can be selected from one another according to the needs. Tool placement reference lines 385 are marked on both sides of the tool entrance.

5. The automatic knife sharpener according to claim 1, Features The knife support mechanism 327 includes a knife support bracket 329, a bracket slider 330, a knife support balance arm 331, a fine-tuning screw 332, a knife support fine-tuning device 336 and an instrument mounting plate 328. The instrument mounting plate is mounted on the platform plate 304, the bracket slider is mounted on the instrument mounting plate 328, the knife support bracket 329 is mounted on the bracket slider 330, and a knife support balance arm 331 extends from each side of the knife support bracket, and a control rod 34 is included in the middle. 0, a knife support fine-tuner 336 is provided under the knife support bracket, and the knife support fine-tuner is provided with a screw mouth, on which a fine-tuning screw 332 is installed. The knife support fine-tuner also includes a fine-tuning switch 337 and a fine-tuning pulley 333. The movable guide rail 319 is provided with a cam bracket 335 and a fine-tuning protrusion 334. The cam bracket is installed on the movable guide rail, and the fine-tuning protrusion is installed on the cam bracket. The fine-tuning protrusion is provided with a one-way structure and can be raised and lowered; the fine-tuning protrusion is docked with the fine-tuning pulley 333.

6. The automatic knife sharpener according to claim 1, Features The lifting mechanism 389 includes a lifting rail 390, a lifting slider 391, a lifting rack 392 and a lifting adjuster 397; the lifting slider is installed on the lifting rail, the lifting rail is installed on the front and rear wing plates of the machine base, the lifting rail and the lifting slider are each a front and rear set, the guide rail bracket 321 is installed on the lifting slider 391, and the lifting slider is installed with a lifting rack 392; The lifting regulator 397 includes a lifting transmission rod 393, a lifting gear 394 and a lifting knob 395. Both ends of the lifting transmission rod 393 are installed on the front and rear wing plates 325 of the machine base. A lifting knob is provided at the front end. The lifting knob 395 passes through the machine base plate and is exposed outside the machine base plate. The adjustment knob is provided with a lock. Lifting gears 394 are provided at both ends of the lifting transmission rod 393, and the lifting gears are meshed with the lifting racks.

7. The automatic knife sharpener according to claim 1, Features The cooling mechanism 360 includes a water pump mounting plate 362, a bottom water storage tank 368, a water pump impeller 363 and a water pump 361. The water pump is mounted on the water pump mounting plate, and the water pump mounting plate is mounted on the platform plate 304. The water pump impeller is mounted on the tail end of the grinding transmission shaft 314, and the water pump impeller is docked with the water pump. The water pump includes a water inlet pipe 365 at the bottom and two water spray pipes at the top, one of which is a front water spray pipe 366 and the other is a back water spray pipe 367. One end of the two water spray pipes is mounted on the equipment mounting plate, and the other end is mounted on the water pump 361. The bottom water storage tank 368 is mounted below the machine base 303. The water inlet pipe is connected to the bottom water storage tank, and the water storage tank is equipped with a water level observation hole 369.

8. The automatic knife sharpener according to claim 1, Features The control mechanism 339 includes a control rod 340, a one-way rack 341, a control bracket 343, a mechanical disc operation controller 344 and a rotating gear 342. The control bracket is installed on the tool mounting plate 328. A rotating shaft is provided in the middle of the mechanical disc operation controller. One end of the rotating shaft is installed on the tool mounting plate 328, and the other end is installed on the control bracket 343. The mechanical disc operation controller can rotate around the rotating shaft. The mechanical disc operation controller 344 is provided with a rotating gear 342. The control rod is installed on the knife support. On the frame 329, the control rod is equipped with a one-way rack, which is meshed with the rotating gear. The control bracket 343 is equipped with electrode contacts, which include a common fire electrode input point 347, a moving fire electrode output point 348, a grinding fire electrode output point 349, a knife clamping fire electrode output point 350 and a knife loosening fire electrode input point 351. The operation controller 344 is disc-shaped. The mechanical disc operation controller includes a moving power-off area 354, a grinding power-off area 355, a knife clamping power-off area 356 and a knife loosening relay area 357. The electrode contacts touch the operation controller; The operation controller may be a mechanical disc operation controller 344, a mechanical cylinder operation controller 398, or a single chip electronic operation controller 399; Grinding stroke sensors 358 are also installed on the front and rear wing plates of the machine base and the tool mounting plate.

9. The automatic knife sharpener according to claim 1 or 4, Features The manual clamping switch 374 and the control panel 388 can be arranged on the left side, or on the right side, the front side, the back side and the top side.

10. The automatic knife sharpener according to claim 1 or 3, Features The arc-shaped movable guide rail can be replaced according to different blade curvatures.

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