US20230405754A1

US20230405754A1 - Automatic edge sharpener

Info

Publication number: US20230405754A1
Application number: US17/863,151
Authority: US
Inventors: Changqiang FU; Changyi FU; Jingjun Liu
Original assignee: Tangshan Yannan Shovel Making Co ltd
Current assignee: Tangshan Yannan Shovel Making Co ltd
Priority date: 2022-05-23
Filing date: 2022-07-12
Publication date: 2023-12-21
Also published as: CN114670063A

Abstract

An automatic edge sharpener includes a bottom box device, a clamp device, a grinder device and guide blocks. The present invention has the advantages of reasonable and simple structure, low production cost and convenient installation, the guide blocks come into contact with the guide wheel to change the movement track of the grinding wheel and sharpen edges along different tracks, which can be a straight line, a circular arc, a wavy shape, and the like, thus achieving a wider application range; the present invention adopts a clamping method in which the positioning plates and the clamps are mated, the positioning plates are detachable and removable, different positioning plates can be selected according to the workpiece. the number of sides of the support frame is designed according to the shape of the product, and also for wavy edge back and forth, which can meet the use requirements of various products.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Application No. 202210562840.1, filed on May 23, 2022, entitled “AUTOMATIC EDGE SHARPENER”. These contents are hereby incorporated by reference.

TECHNICAL FIELD

The present invention relates to the field of machining, and in particular to an automatic edge sharpener.

BACKGROUND

At present, the commonly used edge sharpener is just a simple grinder for edge sharpening. First, a product is held and fixed by hand, and then the product is placed close to the grinder for edge sharpening. As a result, great vibration is caused to the human body during work, which is more likely to cause damage to the operator. Since it relies on manual operation, the width and angle of an edge sharpened are only visually observed by the operator, and the edge length and width of each product cannot be unified. In the case of sharpening a product with a wavy edge, the middle part is prone to adhesion. This requires an additional process of sawing and filing the edge. The depth of the wavy edge opened cannot be controlled steadily, the product quality cannot be guaranteed, and it is difficult to achieve customer satisfaction. Therefore, a technology is urgently desired to make up for this deficiency.

SUMMARY OF THE INVENTION

An objective of the present invention is to provide an automatic edge sharpener in order to solve the above problems, and to provide an automatic edge sharpener that can sharpen an edge along a straight line, an arc, and also a track, thereby meeting the requirements of straight and arc edge sharpening and also meeting the requirement of wavy edge sharpening.
In order to solve the above problems, the present invention provides a technical solution: an automatic edge sharpener, including a bottom box device, a clamp device, a grinder device and guide blocks.
The clamp device and the grinder device are both connected to the bottom box device; and the guide blocks are arranged in the clamp device. Specifically, in structure, the bottom box device includes: a bottom box body, a power distribution box, a water tank, and an opening. The power distribution box for power supply is fixedly connected to a side of the bottom box body. The opening is formed in a bottom surface of one side of the bottom box body close to the grinder device. The water tank is arranged under the opening.
Preferably, in structure, the clamp device includes an air storage tank, a rotating shaft, a first base, a gearwheel, a support frame, clamps, positioning plates, first Y-joints, air cylinders, fork pneumatic valves, a pinion gear, a reducer, a cycloidal pinwheel reducer with a motor, a belt, second Y-joints, and connecting rods. The first base, the reducer, and the cycloidal pinwheel reducer with a motor are fixedly connected to the bottom box body of the bottom box device. The first base is movably connected with the rotating shaft. The gearwheel is fixedly connected to a lower end of the rotating shaft. An output end of the cycloidal pinwheel reducer with a motor is connected with an input end of the reducer through the belt. The pinion gear is fixedly connected to an output end of the reducer. The pinion gear and the gearwheel are meshed with each other. The support frame is fixedly connected to an upper end of the rotating shaft. The air storage tank is fixedly connected to the center of the support frame. A plurality of air cylinders are arranged around the air storage tank in a circular array, and air inlet ends of the air cylinders are all connected to the air storage tank through the fork pneumatic valves. A first Y-joint is fixedly connected to an output end of each air cylinder. A plurality of second Y-joints are arranged on a surface of the support frame in a circular array. The number of second Y-joints is consistent with the number of air cylinders. A connecting rod is hinged in each second Y-shaped joint. One end of the connecting rod is hinged in the corresponding first Y-joint, and the other end of the connecting rod is fixedly connected with a clamp. A positioning plate is arranged under each clamp, and the positioning plates are fixedly connected to the support frame.
Preferably, in structure, the grinder device includes a second base, an inner tube, an outer tube, a first screw, a lifting handwheel, a first support frame, a second support frame, a third support frame, a stroke handwheel, springs, sliders, optical axes, a motor, a grinding wheel, a grinding wheel mounting base, a guide wheel, a guide wheel frame, a guide rod, a side support plate, a second screw, and V-belts. The second base is fixedly connected to the bottom box body of the bottom box device. The second base is fixedly connected with the inner tube and the side support plate. The inner tube is slidably connected with the outer tube. The first screw is threadedly connected to the outer tube. A tail end of the first screw is against the inner tube, and the lifting handwheel is fixedly connected to a top of the first screw. The first support frame is fixedly connected to the outer tube. The guide rod is fixedly connected to a lower surface of the first support frame and slidably connected into the side support plate. The first support frame is provided with two optical axes spaced apart from each other. The second support frame is slidably connected to the optical axes in the first support frame through the slider arranged at the lower end. The second support frame is likewise provided with two optical axes spaced apart from each other. The third support frame is likewise slidably connected to the second support frame through the slider arranged at the lower end. The second screw is threadedly connected to a lower end of a right side of the third support frame. The stroke handwheel is fixedly connected to a right end of the second screw, and the second screw is threadedly connected into the second support frame. The guide wheel frame is fixedly connected to the side of the second support frame. The guide wheel is movably connected into the guide wheel frame. The springs are connected between two sides of the first support frame and the second support frame. The grinding wheel mounting base is fixedly connected to a front end position of the third support frame. The motor is fixedly connected to a rear end position of the third support frame. The grinding wheel is movably connected into the grinding wheel mounting base. An output end of the motor is connected to an input end of the grinding wheel through three V-belts.
Further, the grinder device further includes a grinding wheel guard, a water pump, a water pipe and a nozzle. The grinding wheel is provided with the grinding wheel guard. The water pump is fixedly connected to the bottom box body of the bottom box device. The nozzle is connected to an output end of the water pump through the water pipe and aligned with the grinding wheel.
Further, the specific connection relationship between the guide blocks and the clamp device is as follows: a plurality of guide blocks are provided, and the guide blocks are sequentially clamped in the support frame of the clamp device.
Further, the belt is configured as a synchronous belt.
Further, the gearwheel and the pinion gear are both coated with grease.
Further, the guide wheel is coated with a wear-resistant coating.
The present invention has the following beneficial effects.

- (1) The present invention has the advantages of reasonable and simple structure, low production cost and convenient installation. The present invention provides an automatic edge sharpener that can sharpen an edge along a straight line, an arc, and also a track, thereby meeting the requirements of straight and arc edge sharpening and also meeting the requirement of wavy edge sharpening.
- (2) According to the present invention, the guide blocks come into contact with the guide wheel to change the movement track of the grinding wheel and sharpen edges along different tracks, which can be a straight line, a circular arc, a wavy shape, and the like, thus achieving a wider application range.

The present invention adopts a clamping method in which the positioning plates and the clamps are mated. The positioning plates are steel plates that are detachable and can move back and forth. Different positioning plates can be selected according to different workpieces. The positioning plates can be adjusted back and forth according to the size of the workpiece. The number of sides of the support frame is designed according to the shape of the product. The present invention is suitable for ordinary edge sharpening, and also for wavy edge back and forth, which can meet the use requirements of various products.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic structural diagram of a bottom box device according to the present invention.

FIG. 3 is a schematic structural diagram 1 of a clamp device according to the present invention.

FIG. 4 is a schematic structural diagram 2 of the clamp device according to the present invention.

FIG. 5 is a schematic structural diagram 1 of a grinder device according to the present invention.

FIG. 6 is a schematic structural diagram 2 of the grinder device according to the present invention.

FIG. 7 is a schematic structural diagram 3 of the grinder device according to the present invention.

FIG. 8 is a schematic structural installation diagram of guide blocks according to the present invention.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

As shown in FIG. 1 to FIG. 8 , the specific implementation of an automatic edge sharpener provided by the present disclosure is described as below.
As shown in FIGS. 1-8 , an automatic edge sharpener, including a bottom box device 1, a clamp device 2, a grinder device 3 and guide blocks 4.
The clamp device 2 and the grinder device 3 are both connected to the bottom box device 1; and the guide blocks 4 are arranged in the clamp device 2.
Specifically, in structure, the bottom box device 1 includes: a bottom box body 11, a power distribution box 12, a water tank 13, and an opening 14. The power distribution box 12 for power supply is fixedly connected to a side of the bottom box body 11. The opening 14 is formed in a bottom surface of one side of the bottom box body 11 close to the grinder device 3. The water tank 13 is arranged under the opening 14.
Specifically, in structure, the clamp device 2 includes an air storage tank 21, a rotating shaft 22, a first base 23, a gearwheel 24, a support frame 25, clamps 26, positioning plates 27, first Y-joints 28, air cylinders 29, fork pneumatic valves 211, a pinion gear 212, a reducer 213, a cycloidal pinwheel reducer 214 with a motor, a belt 215, second Y-joints 216, and connecting rods 217. The first base 23, the reducer 213, and the cycloidal pinwheel reducer 214 with a motor are fixedly connected to the bottom box body 11 of the bottom box device 1. The first base 23 is movably connected with the rotating shaft 22. The gearwheel 24 is fixedly connected to a lower end of the rotating shaft 22. An output end of the cycloidal pinwheel reducer 214 with a motor is connected with an input end of the reducer 213 through the belt 215. The pinion gear 212 is fixedly connected to an output end of the reducer 213. The pinion gear 212 and the gearwheel 24 are meshed with each other. The support frame 25 is fixedly connected to an upper end of the rotating shaft 22. The air storage tank 21 is fixedly connected to the center of the support frame 25. A plurality of air cylinders 29 are arranged around the air storage tank 21 in a circular array, and air inlet ends of the air cylinders 29 are all connected to the air storage tank 21 through the fork pneumatic valves 211. A first Y-joint 28 is fixedly connected to an output end of each air cylinder 29. A plurality of second Y-joints 216 are arranged on a surface of the support frame 25 in a circular array. The number of second Y-joints 216 is consistent with the number of air cylinders 29. A connecting rod 217 is hinged in each second Y-shaped joint 216. One end of the connecting rod 217 is hinged in the corresponding first Y-joint 28, and the other end of the connecting rod 217 is fixedly connected with a clamp 26. A positioning plate 27 is arranged under each clamp 26, and the positioning plates 27 are fixedly connected to the support frame 25.
Specifically, in structure, the grinder device 3 includes a second base 31, an inner tube 32, an outer tube 33, a first screw 34, a lifting handwheel 35, a first support frame 36, a second support frame 37, a third support frame 38, a stroke handwheel 39, springs 310, sliders 311, optical axes 312, a motor 313, a grinding wheel 314, a grinding wheel mounting base 316, a guide wheel 317, a guide wheel frame 318, a guide rod 322, a side support plate 323, a second screw 324, and V-belts 325. The second base 31 is fixedly connected to the bottom box body 11 of the bottom box device 1. The second base 31 is fixedly connected with the inner tube 32 and the side support plate 323. The inner tube 32 is slidably connected with the outer tube 33. The first screw 34 is threadedly connected to the outer tube 33. A tail end of the first screw 34 is against the inner tube 32, and the lifting handwheel 35 is fixedly connected to a top of the first screw 34. The first support frame 36 is fixedly connected to the outer tube 33. The guide rod 322 is fixedly connected to a lower surface of the first support frame 36 and slidably connected into the side support plate 323. The first support frame 36 is provided with two optical axes 312 spaced apart from each other. The second support frame 37 is slidably connected to the optical axes 312 in the first support frame 36 through the slider 311 arranged at the lower end. The second support frame 37 is likewise provided with two optical axes 312 spaced apart from each other. The third support frame 38 is likewise slidably connected to the second support frame 37 through the slider 311 arranged at the lower end. The second screw 324 is threadedly connected to a lower end of a right side of the third support frame 38. The stroke handwheel 39 is fixedly connected to a right end of the second screw 324, and the second screw 324 is threadedly connected into the second support frame 37. The guide wheel frame 318 is fixedly connected to the side of the second support frame 37. The guide wheel 317 is movably connected into the guide wheel frame 318. The springs 310 are connected between two sides of the first support frame 36 and the second support frame 37. The grinding wheel mounting base 316 is fixedly connected to a front end position of the third support frame 38. The motor 313 is fixedly connected to a rear end position of the third support frame 38. The grinding wheel 314 is movably connected into the grinding wheel mounting base 316. An output end of the motor 313 is connected to an input end of the grinding wheel 314 through three V-belts 325.
The grinder device 3 further includes a grinding wheel guard 315, a water pump 319, a water pipe 320 and a nozzle 321. The grinding wheel 314 is provided with the grinding wheel guard 315. The water pump 319 is fixedly connected to the bottom box body 11 of the bottom box device 1. The nozzle 321 is connected to an output end of the water pump 319 through the water pipe 320 and aligned with the grinding wheel 314.
The specific connection relationship between the guide blocks 4 and the clamp device 2 is as follows: a plurality of guide blocks 4 are provided, and the guide blocks 4 are sequentially clamped in the support frame 25 of the clamp device 2.
The belt 215 is configured as a synchronous belt; the gearwheel 24 and the pinion gear 212 are both coated with grease; the guide wheel 317 is coated with a wear-resistant coating.
Supplementary description of the working principle of the present invention is as follows. First, different guide blocks 4 can be designed according to different shapes of workpieces, and the guide blocks 4 can be installed on the lower plate of the support frame 25 and fixed with bolts. Then, the power is turned on and the water pump 319 is started to deliver water to the grinding wheel 314 through the nozzle 321. The cycloidal pinwheel reducer 214 with a motor drives the reducer 213 to rotate, thereby driving the support frame 25 to rotate slowly. The fork pneumatic valves 211 control the air cylinders 29 to move. When the clamp 26 is in a closed state, the fork pneumatic valve 211 is toggled and then the clamp 26 is opened. A workpiece is placed in place, the fork pneumatic valve 211 is then toggled again, and the clamp 26 is closed to clamp the workpiece tightly for machining. When the workpiece is rotated to the position of the grinding wheel 314, the edge sharpening is performed. When the edge sharpening is finished, the fork pneumatic valve 211 is toggled again by the operator, the clamp 26 is then opened, the finished workpiece is removed, and another workpiece to be machined is mounted. The fork pneumatic valve 211 is then toggled, the clamp 26 is closed to clamp the workpiece tightly, and this process is repeated to sharpen the edge. If double-sided edge sharpening is required, the workpiece just needs to be symmetrically turned over to machine the other side. The grinder device of the present invention adopts three-layer support frame control, so that the grinding wheel can be adjusted frontward and backward, up and down. Due to the design of the guide wheel 317, in the process of edge sharpening, when the support frame 25 rotates, the guide wheel 317 comes into contact with the lower edge of the support frame 25, thereby changing the movement track of the grinding wheel and completing the required edge sharpening of the product. The connection between the guide wheel frame 318 and the guide wheel 317 is designed into a U-shaped structure, which is convenient for loading, unloading and replacement. The first support frame 36 and the second support frame 37 are provided with the springs 310 on two sides. When pushed out along the track, the guide wheel 317 drives the second support frame 37 to move backward, and the springs 310 play the role of pulling back.
The control method of the present invention is performed by manually turning on and off a switch. The wiring diagram of power components and the supply of the power belong to the common knowledge in the art. Moreover, the present invention is mainly provided for protecting the mechanical device, so the present invention will not explain the control method and wiring arrangement in detail.
In the present invention, the terms “mount,” “arrange,” “connect,” “fix,” and the like shall be understood in a broad sense. For example, “connect” may mean being fixedly connected, detachably connected, or integrally connected; and “connect with” may mean being directly connected or indirectly connected through an intermediary. For those of ordinary skill in the art, specific meanings of the above terms in the present invention can be understood according to specific situations.
In the description of the present invention, it should be understood that if orientation or position relations indicated by the terms such as “upper,” “lower,” “left,” “right,” “front,” “back,” “one end”, “other end”, “one side”, “other side”, “inside” and the like are based on the orientation or position relations shown in the drawings, and the terms are intended only to facilitate the description of the present invention and simplify the description, rather than indicating or implying that the apparatus or element referred to must have a particular orientation and be constructed and operated in the particular orientation, and therefore cannot be construed as a limitation on the present invention.
The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. The present invention may be subject to changes and variations for those skilled in the art. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall all be encompassed in the protection scope of the present invention.

Claims

1. An automatic edge sharpener, comprising:

a bottom box device 1, a clamp device 2, a grinder device 3 and guide blocks 4;

the clamp device 2 and the grinder device 3 are both connected to the bottom box device 1;

the guide blocks 4 are arranged in the clamp device 2;

specifically, in structure, the bottom box device 1 includes: a bottom box body 11, a power distribution box 12, a water tank 13, and an opening 14;

the power distribution box 12 for power supply is fixedly connected to a side of the bottom box body 11;

the opening 14 is formed in a bottom surface of one side of the bottom box body 11 close to the grinder device 3;

the water tank 13 is arranged under the opening 14.

2. The automatic edge sharpener according to claim 1, wherein the clamp device 2 comprises:

an air storage tank 21, a rotating shaft 22, a first base 23, a gearwheel 24, a support frame 25, clamps 26, positioning plates 27, first Y-joints 28, air cylinders 29, fork pneumatic valves 211, a pinion gear 212, a reducer 213, a cycloidal pinwheel reducer 214 with a motor, a belt 215, second Y-joints 216, and connecting rods 217;

the first base 23, the reducer 213, and the cycloidal pinwheel reducer 214 with a motor are fixedly connected to the bottom box body 11 of the bottom box device 1;

the first base 23 is movably connected with the rotating shaft 22;

the gearwheel 24 is fixedly connected to a lower end of the rotating shaft 22;

an output end of the cycloidal pinwheel reducer 214 with a motor is connected with an input end of the reducer 213 through the belt 215;

the pinion gear 212 is fixedly connected to an output end of the reducer 213, the pinion gear 212 and the gearwheel 24 are meshed with each other, the support frame 25 is fixedly connected to an upper end of the rotating shaft 22, the air storage tank 21 is fixedly connected to the center of the support frame 25;

a plurality of air cylinders 29 are arranged around the air storage tank 21 in a circular array, and air inlet ends of the air cylinders 29 are all connected to the air storage tank 21 through the fork pneumatic valves 211;

a first Y-joint 28 is fixedly connected to an output end of each air cylinder 29;

a plurality of second Y-joints 216 are arranged on a surface of the support frame 25 in a circular array, the number of second Y-joints 216 is consistent with the number of air cylinders 29;

a connecting rod 217 is hinged in each second Y-shaped joint 216, one end of the connecting rod 217 is hinged in the corresponding first Y-joint 28, and the other end of the connecting rod 217 is fixedly connected with a clamp 26;

a positioning plate 27 is arranged under each clamp 26, and the positioning plates 27 are fixedly connected to the support frame 25.

3. The automatic edge sharpener according to claim 1, wherein the grinder device 3 comprises:

a second base 31, an inner tube 32, an outer tube 33, a first screw 34, a lifting handwheel 35, a first support frame 36, a second support frame 37, a third support frame 38, a stroke handwheel 39, springs 310, sliders 311, optical axes 312, a motor 313, a grinding wheel 314, a grinding wheel mounting base 316, a guide wheel 317, a guide wheel frame 318, a guide rod 322, a side support plate 323, a second screw 324, and V-belts 325;

the second base 31 is fixedly connected to the bottom box body 11 of the bottom box device 1;

the second base 31 is fixedly connected with the inner tube 32 and the side support plate 323;

the inner tube 32 is slidably connected with the outer tube 33, the first screw 34 is threadedly connected to the outer tube 33, a tail end of the first screw 34 is against the inner tube 32, and the lifting handwheel 35 is fixedly connected to a top of the first screw 34;

the first support frame 36 is fixedly connected to the outer tube 33, the guide rod 322 is fixedly connected to a lower surface of the first support frame 36 and slidably connected into the side support plate 323;

the first support frame 36 is provided with two optical axes 312 spaced apart from each other;

the second support frame 37 is slidably connected to the optical axes 312 in the first support frame 36 through the slider 311 arranged at the lower end;

the second support frame 37 is likewise provided with two optical axes 312 spaced apart from each other;

the third support frame 38 is likewise slidably connected to the second support frame 37 through the slider 311 arranged at the lower end, the second screw 324 is threadedly connected to a lower end of a right side of the third support frame 38; the stroke handwheel 39 is fixedly connected to a right end of the second screw 324, and the second screw 324 is threadedly connected into the second support frame 37;

the guide wheel frame 318 is fixedly connected to the side of the second support frame 37. The guide wheel 317 is movably connected into the guide wheel frame 318;

the springs 310 are connected between two sides of the first support frame 36 and the second support frame 37;

the grinding wheel mounting base 316 is fixedly connected to a front end position of the third support frame 38. The motor 313 is fixedly connected to a rear end position of the third support frame 38. The grinding wheel 314 is movably connected into the grinding wheel mounting base 316. An output end of the motor 313 is connected to an input end of the grinding wheel 314 through three V-belts 325.

4. The automatic edge sharpener according to claim 3, wherein the grinder device 3 further comprises:

a grinding wheel guard 315, a water pump 319, a water pipe 320 and a nozzle 321;

the grinding wheel 314 is provided with the grinding wheel guard 315;

the water pump 319 is fixedly connected to the bottom box body 11 of the bottom box device 1;

the nozzle 321 is connected to an output end of the water pump 319 through the water pipe 320 and aligned with the grinding wheel 314.

5. The automatic edge sharpener according to claim 1, wherein the specific connection relationship between the guide blocks 4 and the clamp device 2 is as follows:

a plurality of guide blocks 4 are provided, and the guide blocks 4 are sequentially clamped in the support frame 25 of the clamp device 2.

6. The automatic edge sharpener according to claim 2, wherein the belt 215 is configured as a synchronous belt.

7. The automatic edge sharpener according to claim 2, wherein the gearwheel 24 and the pinion gear 212 are both coated with grease.

8. The automatic edge sharpener according to claim 3, wherein the the guide wheel 317 is coated with a wear-resistant coating.