Self-cleaning type single brushless angle grinder for metal cutting

Abstract

The invention relates to the technical field of electric tools, and discloses a self-cleaning type single brushless angle grinder for metal cutting, which comprises a main body, the side wall of the main body is rotatably connected with a rotating shaft, and the self-cleaning type single brushless angle grinder further comprises a movement mechanism, and the movement mechanism is arranged in the main body and is used for rotating when the main body moves. When the elastic plates incline, metal chips can be guided to enter the elastic plate of the next stage, the movement process of the previous elastic plate can be repeated after the elastic plates make contact with the chips, and therefore the chips swung when the cutting blade rotates are collected and cleaned; the situation that when a connecting pipe absorbs and cleans metal chippings in the protective sleeve through a dust collector connected with the connecting pipe, the rotating speed of a cutting blade is too high, so that the connecting pipe cannot completely absorb the chippings, and consequently part of the chippings continuously rotate in the protective sleeve is reduced, and the chipping cleaning effect of the device is enhanced; and the internal cleaning quality of the device during operation is improved.

Description

Technical Field

[0001] This invention relates to the field of power tool technology, specifically to a self-cleaning, one-way brushless angle grinder for metal cutting. Background Technology

[0002] This product is a metal cutting tool that deeply integrates a high-performance single-phase brushless motor with advanced source dust collection technology. Through a precisely designed integrated dust collection duct and protective cover, its brushless motor core provides powerful performance. The whole machine adopts multiple dustproof seals and is designed for metal processing scenarios with stringent requirements for dust control and production safety. When using this device, the operator first fixes the cutting disc onto the rotating shaft of the angle grinder. Then, the protective cover is fitted onto the outer surface of the cutting disc and rotatably connected to the side wall of the angle grinder. The connecting tube on the protective cover is connected to an external vacuum cleaner. When the angle grinder cuts metal, the metal shavings generated will enter the inside of the protective cover due to the swinging motion of the cutting disc. Subsequently, the vacuum cleaner connected to the connecting tube will clean the shavings. During the process of the vacuum cleaner absorbing the metal shavings through the connecting tube, some shavings may quickly pass through the connecting tube due to the excessive rotation speed of the cutting disc, thus continuously rotating inside the protective cover. This reduces the cleaning effect of the device on the shavings and affects the cleaning quality of the device during operation. Summary of the Invention

[0003] The purpose of this invention is to provide a self-cleaning, one-way brushless angle grinder for metal cutting, in order to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a self-cleaning, single-direction brushless angle grinder for metal cutting, comprising a main body, a rotating shaft rotatably connected to the side wall of the main body, and further comprising: The motion mechanism is installed inside the main body and is used to rotate when the main body moves. The auxiliary mechanism is installed inside the main body and is used to move during the operation of the motion mechanism.

[0005] Furthermore, the main body includes a cutting blade fixedly connected to the outer surface of the rotating shaft, and the main body also includes: A cleaning component is rotatably connected to the side wall of the main body and is used for cleaning when the main body is in operation; A rotating component is mounted on the inner wall of the cleaning component via a positioning element and is used to rotate during the operation of the main body. The positioning element includes a fixed shaft that is fixedly connected to the inner wall of the cleaning component.

[0006] Furthermore, the sports apparatus includes: The push component is installed on the side wall of the rotating component and is used to drive the internal components of the rotating component to operate; The sliding component is installed inside the rotating component and is used to slide during the operation of the rotating component.

[0007] Furthermore, the auxiliary mechanisms include: The oscillating assembly is installed on the inner wall of the cleaning assembly and is used to oscillate when the cutting blade moves.

[0008] Furthermore, the cleaning component includes a protective sleeve rotatably connected to the side wall of the main body, and the interior of the protective sleeve has a placement groove; The inner wall of the placement groove is provided with an arc-shaped groove, and a connecting pipe is fixedly connected to the outer surface of the placement groove; The outer surface of the cutting blade is slidably connected to the inner wall of the arc-shaped groove.

[0009] Furthermore, the rotating assembly includes an arc-shaped plate 1 rotatably connected to the outer surface of the fixed shaft, and a plurality of elastic plates are fixedly connected to the inner wall of the arc-shaped plate 1. The side wall of the fixed shaft is fixedly connected to the inner wall of the protective sleeve, and the elastic plate is Z-shaped as a whole.

[0010] Furthermore, a connecting rod is rotatably connected to the inner wall of the arc-shaped plate, and a moving groove is provided on the side wall of the connecting rod; The end of the connecting rod furthest from the arc-shaped plate is rotatably connected to the outer surface of the cutting blade.

[0011] Furthermore, the pushing component includes an arc-shaped plate two that is slidably connected to the side wall of the connecting rod, and a number of pushing blocks are fixedly connected to the side wall of the arc-shaped plate two.

[0012] Furthermore, the sliding assembly includes a swing rod rotatably connected to the inner wall of the arc-shaped plate, and a sliding block is rotatably connected to the side wall of the swing rod; The sidewall of the sliding block is slidably connected to the inside of the moving groove.

[0013] Furthermore, the swing assembly includes an arc-shaped rod rotatably connected to the side wall of the connecting rod, a push rod rotatably connected to the end of the arc-shaped rod away from the connecting rod, and a baffle rotatably connected to the end of the push rod near the connecting tube; The side wall of the arc-shaped rod is rotatably connected to the side wall of the swing rod, the end of the push rod away from the baffle is rotatably connected to the inner wall of the protective sleeve, and the side wall of the baffle is slidably connected to the inner wall of the protective sleeve.

[0014] The present invention has the following beneficial effects: 1. When the elastic plate is tilted, the present invention guides metal debris into the interior of the next elastic plate. After the elastic plate contacts the debris, it repeats the movement process of the previous elastic plate, thereby collecting and cleaning the debris thrown by the cutting blade when it rotates. This reduces the situation where the connecting pipe cannot completely absorb the debris due to the high rotation speed of the cutting blade when the vacuum cleaner connected to it absorbs and cleans the metal debris inside the protective sleeve, resulting in some debris continuing to rotate inside the protective sleeve. This enhances the cleaning effect of the device on debris and improves the cleaning quality of the device's interior during operation.

[0015] 2. In this invention, the baffle changes from vertical to horizontal during sliding. After the rotating shaft completes its movement, the baffle slides, reducing the angle between the baffle and the push rod. This adapts to the length of the push rod, reducing the likelihood of metal debris entering the protective sleeve due to the force of the cutting blade. Furthermore, the obstruction of the inner wall of the arc-shaped plate and the inner wall of the protective sleeve causes some debris to fall onto the cutting path of the cutting blade, resulting in the debris cooling and adhering to the surface of the metal plate, creating bumps. This keeps the metal plate surface clean and improves the cleaning efficiency of the device during operation.

[0016] 3. In this invention, after the sliding block and the swing rod rotate in a straight line, the sliding block pulls the swing rod to move. After the swing rod moves, it contacts the side wall of the elastic plate that is affected by the rotation of the arc plate. Then, a pushing force is applied to the elastic plate, causing the contact position between the elastic plate and the pushing block to tilt, thereby expanding the angle of the inner wall of the elastic plate. This reduces the situation where the pushing force of the cutting blade is unstable when the debris contacts the side wall of the elastic plate and pushes the elastic plate to tilt and rebound step by step, resulting in differences in the rebound angle of the elastic plate. This ensures the stability of the elastic plate during operation and further improves the cleaning quality of the device's interior during operation.

[0017] 4. When the swing rod is subjected to tension, the sliding block connected to it slides upward inside the moving groove, thereby assisting the sliding block in sliding when the connecting rod moves downward. At the same time as the arc rod retracts, it applies a downward thrust to the push rod. After the push rod is subjected to the thrust, it drives the baffle to slide. Then, when the rotating shaft resets, the push rod will reset under the rebound force of the arc rod and the tension of the connecting rod on the arc rod. This reduces the situation where the sliding block is obstructed due to the small friction between the sliding block and the moving groove when the sliding block is sliding inside the connecting rod, and enhances the cleaning efficiency of the device for internal debris during operation.

[0018] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall partial cross-sectional structure of the present invention; Figure 3 This is a partial cross-sectional view of the cleaning component of the present invention; Figure 4 This is a schematic diagram of the cleaning component of the present invention; Figure 5 This is a diagram showing the connection relationships of the cleaning components of the present invention; Figure 6 This is a schematic diagram of the rotating component of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle; Figure 8 This is a schematic diagram of the driving component of the present invention; Figure 9 For the present invention Figure 8 Enlarged view of point B in the middle; Figure 10 This is a schematic diagram of the swing component of the present invention; Figure 11 This is a diagram showing the connection relationship of the sliding component of the present invention.

[0021] The attached diagram lists the components represented by each number as follows: In the diagram: 1. Main body; 101. Rotating shaft; 102. Cutting blade; 11. Cleaning component; 111. Protective sleeve; 112. Placement slot; 113. Arc-shaped slot; 114. Connecting pipe; 12. Rotating component; 121. Fixed shaft; 122. Arc-shaped plate one; 123. Elastic plate; 124. Connecting rod; 125. Moving slot; 2. Motion mechanism; 21. Pushing component; 211. Arc-shaped plate two; 212. Pushing block; 22. Sliding component; 221. Swing rod; 222. Sliding block; 3. Auxiliary mechanism; 31. Swinging component; 311. Arc-shaped rod; 312. Push rod; 313. Baffle. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figure 1 - Figure 11 As shown, the present invention is a self-cleaning, one-way brushless angle grinder for metal cutting, comprising a main body 1, wherein a rotating shaft 101 is rotatably connected to the side wall of the main body 1, and further comprising: Motion mechanism 2 is installed inside the main body 1 and is used to rotate when the main body 1 moves; Auxiliary mechanism 3 is installed inside the main body 1 and is used to move during the operation of motion mechanism 2.

[0024] The main body 1 includes a cutting blade 102 fixedly connected to the outer surface of the rotating shaft 101. The main body 1 also includes: Cleaning component 11 is rotatably connected to the side wall of the main body 1 and is used to perform cleaning when the main body 1 is in operation; Rotating component 12 is mounted on the inner wall of cleaning component 11 via a positioning element and is used to rotate during operation of main body 1; The positioning element includes a fixed shaft 121 that is fixedly connected to the inner wall of the cleaning assembly 11.

[0025] Motion mechanism 2 includes: A push component 21 is installed on the side wall of the rotating component 12 and is used to drive the internal components of the rotating component 12 to operate. The sliding component 22 is installed inside the rotating component 12 and is used to slide during the operation of the rotating component 12.

[0026] Auxiliary mechanism 3 includes: The oscillating assembly 31 is installed on the inner wall of the cleaning assembly 11 and is used to oscillate when the cutting blade 102 moves.

[0027] The cleaning component 11 includes a protective sleeve 111 rotatably connected to the side wall of the main body 1, and the interior of the protective sleeve 111 has a placement groove 112. The inner wall of the placement groove 112 is provided with an arc-shaped groove 113, and the outer surface of the placement groove 112 is fixedly connected with a connecting pipe 114.

[0028] The outer surface of the cutting blade 102 is slidably connected to the inner wall of the arc groove 113. After the debris enters the interior of the protective sleeve 111, it will contact the side wall of the elastic plate 123 and apply a slight pushing force to the elastic plate 123. When the elastic plate 123 closest to the connecting tube 114 is pushed, the inner wall of the elastic plate 123 will guide the metal debris to bounce back towards the connecting tube 114.

[0029] The rotating assembly 12 includes an arc-shaped plate 122 rotatably connected to the outer surface of the fixed shaft 121, and a plurality of elastic plates 123 are fixedly connected to the inner wall of the arc-shaped plate 122.

[0030] Among them, the side wall of the fixed shaft 121 is fixedly connected to the inner wall of the protective sleeve 111. The elastic plate 123 is Z-shaped. When the elastic plate 123 closest to the connecting tube 114 is pushed, the inner wall of the elastic plate 123 will guide the metal debris to rebound towards the connecting tube 114. The side away from the arc plate 122 is pushed by the debris and tilts.

[0031] A connecting rod 124 is rotatably connected to the inner wall of the arc plate 122, and a moving groove 125 is provided on the side wall of the connecting rod 124.

[0032] The end of the connecting rod 124 away from the arc plate 122 is rotatably connected to the outer surface of the cutting blade 102. When the sliding block 222 slides upward in the moving groove 125, the arc plate 211 slides upward on the side wall of the connecting rod 124. When the connecting rod 124 continues to move, the sliding block 222 inside moves to the top of the moving groove 125 and is pulled downward by the connecting rod 124.

[0033] The pushing component 21 includes an arc-shaped plate 211 slidably connected to the side wall of the connecting rod 124. Several pushing blocks 212 are fixedly connected to the side wall of the arc-shaped plate 211. When the swing rod 221 moves, it will contact the side wall of the elastic plate 123 which is rotated by the arc-shaped plate 122. Then, a pushing force is applied to the elastic plate 123, so that the position where the elastic plate 123 contacts the pushing block 212 is tilted, thereby expanding the angle of the inner wall of the elastic plate 123.

[0034] The sliding assembly 22 includes a swing rod 221 that is rotatably connected to the inner wall of the arc plate 211, and a sliding block 222 is rotatably connected to the side wall of the swing rod 221.

[0035] The side wall of the sliding block 222 is slidably connected to the inside of the moving groove 125. When the swing rod 221 is subjected to tension, the sliding block 222 connected to it will slide upward inside the moving groove 125, thereby achieving the purpose of assisting the sliding block 222 to slide when the connecting rod 124 moves downward.

[0036] The swing assembly 31 includes an arc-shaped rod 311 rotatably connected to the side wall of the connecting rod 124. A push rod 312 is rotatably connected to the end of the arc-shaped rod 311 away from the connecting rod 124, and a baffle 313 is rotatably connected to the end of the push rod 312 near the connecting tube 114.

[0037] The side wall of the arc-shaped rod 311 is rotatably connected to the side wall of the swing rod 221, the end of the push rod 312 away from the baffle 313 is rotatably connected to the inner wall of the protective sleeve 111, the side wall of the baffle 313 is slidably connected to the inner wall of the protective sleeve 111, and when the end of the arc-shaped rod 311 connected to the connecting rod 124 moves downward, the arc-shaped rod 311 will bend as a whole. During the bending process of the arc-shaped rod 311, an upward pulling force will be applied to the swing rod 221 connected to it.

[0038] In use, the operator first fixes the cutting blade 102 to the outer surface of the rotating shaft 101. Then, the protective sleeve 111 is fitted onto the outer surface of the cutting blade 102, simultaneously rotatably connecting the side wall of the protective sleeve 111 to the side wall of the main body 1. Next, the outlet of the connecting pipe 114 is connected to an external vacuum cleaner. When cutting is required, the brushless motor located inside the main body 1 is activated. The brushless motor drives the rotating shaft 101 to rotate, and the rotation of the protective sleeve 111 drives the cutting blade 102 to rotate. While the cutting blade 102 is rotating, the operator begins cutting the metal plate. During the cutting process… During the process, the operator rotates the main body 1 to make the rotating shaft 101 slide downward inside the arc groove 113. When the rotating shaft 101 slides, it will drive the cutting blade 102 to slide, thereby adjusting the cutting depth of the cutting blade 102 on the metal plate. When the metal plate is cut, it will generate debris. The debris will be thrown into the protective sleeve 111 by the high-speed rotation of the cutting blade 102. After the debris enters the protective sleeve 111, the dust collection device will absorb the debris inside the protective sleeve 111 through the connecting pipe 114, thus completing the overall process of self-cleaning of the device when cutting the metal plate.

[0039] When the rotating shaft 101 slides inside the arc-shaped groove 113 under the push of the worker, it will simultaneously pull the connecting rod 124 to move. When the connecting rod 124 moves, it will pull the arc-shaped plate 122 to rotate around the outer surface of the fixed shaft 121. When the connecting rod 124 rotates, it will drive the elastic plate 123 to move. After the elastic plate 123 completes its movement, when the rotating shaft 101 drives the cutting blade 102 to cut the metal plate, the generated metal chips will be thrown into the protective sleeve 111 under the high-speed rotation of the cutting blade 102. After the chips enter the protective sleeve 111, they will contact the side wall of the elastic plate 123 and apply a slight pushing force to the elastic plate 123. When the elastic plate 123 closest to the connecting tube 114 is pushed, the inner wall of the elastic plate 123 will... The device guides metal debris to bounce back towards the connecting tube 114. The side away from the arc plate 122 is tilted by the debris. When the elastic plate 123 tilts, it guides the metal debris into the interior of the next elastic plate 123. After the elastic plate 123 contacts the debris, it repeats the movement process of the previous elastic plate 123, thereby collecting and cleaning the debris thrown by the cutting blade 102 when it rotates. This reduces the situation where the connecting tube 114 cannot completely absorb the debris when the vacuum cleaner connected to it absorbs and cleans the metal debris inside the protective sleeve 111 due to the excessive rotation speed of the cutting blade 102, resulting in some debris continuing to rotate inside the protective sleeve 111. This enhances the cleaning effect of the device on debris and improves the cleaning quality of the device's interior during operation.

[0040] When the rotating shaft 101 is pushed and slides downward inside the arc-shaped groove 113, it pulls the connecting rod 124 to slide. As the connecting rod 124 slides, its bottom outer surface contacts the side wall of the push rod 312. Then, as the rotating shaft 101 continues to move downward, driving the connecting rod 124 to move, the connecting rod 124 pushes the push rod 312, causing it to swing downward on the inner wall of the protective sleeve 111. As the push rod 312 swings downward, its other end applies a downward thrust to the baffle 313. After receiving this thrust, the baffle 313 slides downward on the side wall of the protective sleeve 111 in a circular motion trajectory. When in motion, the entire structure changes from vertical to horizontal. After the rotating shaft 101 completes its movement, the baffle 313 slides, reducing the angle between the baffle and the push rod 312 to accommodate the length of the push rod 312. This reduces the likelihood of metal debris entering the protective sleeve 111 due to the force of the cutting blade 102. The inner wall of the arc plate 122 and the inner wall of the protective sleeve 111 also prevent some debris from falling onto the cutting path of the cutting blade 102. This causes the debris to cool and adhere to the surface of the metal plate, creating bumps. This keeps the surface of the metal plate clean and improves the cleaning efficiency of the device during operation.

[0041] Since the sliding block 222 is located inside the moving groove 125 and initially at the bottom of the moving groove 125, when the moving groove 125 is pulled downwards, the sliding block 222 will first slide upwards inside the moving groove 125. While the sliding block 222 is sliding upwards inside the moving groove 125, the arc-shaped plate 211 will slide upwards on the side wall of the connecting rod 124. As the connecting rod 124 continues to move, the sliding block 222 inside will move to the top of the moving groove 125 and then be pulled downwards by the connecting rod 124. During this downward movement, the connection between the sliding block 222 and the swing rod 221 will rotate. As the sliding block 222 rotates and the swing rod... After 221 rotates into a straight line, the sliding block 222 pulls the swing rod 221 to move. When the swing rod 221 moves, it will contact the side wall of the elastic plate 123, which is moved by the rotation of the arc plate 122. Then, a pushing force is applied to the elastic plate 123, so that the contact position between the elastic plate 123 and the pushing block 212 is tilted, thereby expanding the angle of the inner wall of the elastic plate 123. This reduces the situation where the pushing force of the cutting blade 102 is unstable when the debris contacts the side wall of the elastic plate 123 and pushes the elastic plate 123 to tilt and rebound step by step, resulting in differences in the rebound angle of the elastic plate 123. This ensures the stability of the elastic plate 123 during operation and further improves the cleaning quality of the device inside during operation.

[0042] As the connecting rod 124 slides downward, it causes the end of the arc-shaped rod 311 connected to it to move. Since the arc-shaped rod 311 is elastically designed, it bends as the end connected to the connecting rod 124 moves downward. During this bending, the arc-shaped rod 311 applies an upward pulling force to the swing rod 221 connected to it. When the swing rod 221 is under tension, the sliding block 222 connected to it slides upward inside the moving groove 125, thus assisting the sliding block 222 in sliding when the connecting rod 124 moves downward. The purpose is to apply a downward thrust to the push rod 312 while the arc rod 311 retracts. After the push rod 312 is pushed, it will drive the baffle 313 to slide. Then, when the rotating shaft 101 is reset, the push rod 312 will be reset under the rebound force of the arc rod 311 and the pulling force of the connecting rod 124 on the arc rod 311. This reduces the situation where the sliding block 222 is obstructed due to the small friction between the sliding block 222 and the moving groove 125 when the sliding block 222 is sliding inside the connecting rod 124. This enhances the cleaning efficiency of the device for internal debris during operation.

[0043] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A self-cleaning single-purpose brushless angle grinder for metal cutting, comprising a main body (1), a rotating shaft (101) being rotatably connected to the side wall of the main body (1), characterized in that, Also include: The movement mechanism (2) is arranged in the inside of the main body (1), is used for rotating when the main body (1) moves; Auxiliary mechanism (3), the auxiliary mechanism (3) is arranged in the inside of the main body (1), is used for moving when the movement mechanism (2) runs.

2. A self-cleaning single-purpose brushless angle grinder for cutting metal according to claim 1, characterized in that: The main body (1) includes a cutting piece (102) fixedly connected to the outer surface of the rotating shaft (101), and the main body (1) further includes: Cleaning assembly (11), the cleaning assembly (11) is rotatably connected to the side wall of the main body (1), for cleaning when the main body (1) works; Rotating assembly (12), the rotating assembly (12) is arranged on the inner wall of the cleaning assembly (11) by the positioning member, for rotating when the main body (1) runs; The positioning member includes a fixed shaft (121) fixedly connected to the inner wall of the cleaning assembly (11).

3. A self-cleaning single-purpose brushless angle grinder for cutting metal according to claim 2, characterized in that: The movement mechanism (2) includes: Pushing assembly (21), the pushing assembly (21) is arranged on the side wall of the rotating assembly (12), for pushing the internal component of the rotating assembly (12) to run; Sliding assembly (22), the sliding assembly (22) is arranged in the inside of the rotating assembly (12), for sliding when the rotating assembly (12) runs.

4. A self-cleaning single-purpose brushless angle grinder for cutting metal according to claim 2, characterized in that: The auxiliary mechanism (3) includes: Swing assembly (31), the swing assembly (31) is arranged on the inner wall of the cleaning assembly (11), for swinging when the cutting piece (102) moves.

5. A self-cleaning single-purpose brushless angle grinder for cutting metal according to claim 2, characterized in that: The cleaning assembly (11) includes a protective sleeve (111) rotatably connected to the side wall of the main body (1), and an accommodation groove (112) is formed in the inner wall of the protective sleeve (111); The inner wall of the accommodation groove (112) is provided with an arc-shaped groove (113), and the outer surface of the accommodation groove (112) is fixedly connected with a connecting pipe (114); Wherein, the outer surface of the cutting piece (102) is slidably connected with the inner wall of the arc-shaped groove (113).

6. A self-cleaning single-purpose brushless angle grinder for cutting metal according to claim 5, characterized in that: The rotating assembly (12) includes an arc-shaped plate one (122) rotatably connected to the outer surface of the fixed shaft (121), and a plurality of elastic plates (123) are fixedly connected to the inner wall of the arc-shaped plate one (122); Wherein, the side wall of the fixed shaft (121) is fixedly connected with the inner wall of the protective sleeve (111), and the elastic plates (123) are integrally Z-shaped.

7. A self-cleaning single-purpose brushless angle grinder for cutting metal according to claim 6, characterized in that: The inner wall of the arc-shaped plate one (122) is rotatably connected with a connecting rod (124), and the side wall of the connecting rod (124) is provided with a moving groove (125); Wherein, the end of the connecting rod (124) away from the arc-shaped plate one (122) is rotatably connected with the outer surface of the cutting piece (102).

8. A self-cleaning single-purpose brushless angle grinder for cutting metal according to claim 3, characterized in that: The pushing assembly (21) includes an arc-shaped plate two (211) slidably connected to the side wall of the connecting rod (124), and a plurality of pushing blocks (212) are fixedly connected to the side wall of the arc-shaped plate two (211).

9. A self-cleaning single-purpose brushless angle grinder for cutting metal according to claim 3, characterized in that: The sliding assembly (22) includes a swing rod (221) rotatably connected to the inner wall of the arc-shaped plate two (211), and a sliding block (222) is rotatably connected to the side wall of the swing rod (221). The side wall of the sliding block (222) is in sliding connection with the inner part of the moving groove (125).

10. The self-cleaning single-purpose brushless angle grinder for cutting metal according to claim 4, characterized in that: The swing assembly (31) comprises an arc-shaped rod (311) rotatably connected to the side wall of the connecting rod (124), and one end of the arc-shaped rod (311) away from the connecting rod (124) is rotatably connected with a pushing rod (312), and one end of the pushing rod (312) close to the connecting pipe (114) is rotatably connected with a baffle (313). The side wall of the arc-shaped rod (311) is rotatably connected with the side wall of the swing rod (221), one end of the pushing rod (312) away from the baffle (313) is rotatably connected with the inner wall of the protective sleeve (111), and the side wall of the baffle (313) is in sliding connection with the inner wall of the protective sleeve (111).

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