Coating robot and telescopic mechanical arm thereof

Abstract

The invention discloses a coating robot and a telescopic mechanical arm thereof, and belongs to the technical field of coating robos.The telescopic mechanical arm comprises a bottom frame, a circular ring is fixedly connected to the bottom of the bottom frame, an adjusting mechanism is installed on the top of the bottom frame, a connecting rod mechanism is installed at the rear end of a supporting plate, and a telescopic mechanism is installed at the front end of the supporting plate; the other end of the connecting rod mechanism and the other end of the telescopic mechanism are movably connected with a fixing disc, and a coating mechanism is installed on the surface of one side of the fixing disc. By designing the adjusting mechanism, the connecting rod mechanism, the telescopic mechanism and the coating mechanism, it is guaranteed that the robot can adjust the height to a certain degree in the working process, and due to the inclined rotating function of a base of the coating robot, the robot is more flexible and accurate when treating complex workpieces; the spraying quality can be improved, dead angles are reduced, the coating uniformity is improved, the production time can be saved, and the production efficiency is optimized.

Description

Technical Field

[0001] The invention belongs to the technical field of painting robots, and in particular relates to a painting robot and a telescopic mechanical arm thereof. Background Art

[0002] In modern manufacturing, painting robots, as a highly efficient automated equipment, are widely used in surface treatment in the automotive, aviation, home appliance and other industries. With the continuous advancement of technology, these robots not only improve the efficiency and quality of painting, but also reduce the safety risks in manual operation. Among them, the introduction of telescopic robotic arms has brought greater flexibility and adaptability to painting robots. The telescopic robotic arm can achieve a larger operating range in a limited space, flexibly adjust the spraying angle and height, and ensure that the coating evenly covers workpieces of various complex shapes. In addition, combined with advanced control systems and sensor technology, painting robots can monitor the painting process in real time and automatically adjust the spraying parameters, thereby optimizing the painting effect and reducing material waste. This series of technological advances has enabled painting robots to play an important role in improving production efficiency and reducing operating costs.

[0003] With the rapid development of industry, for the health of operators and the speed of painting, mechanical operations are mostly used. Existing painting robots mostly use single methods such as rotation and movement when working, and are usually adjusted by the length of the mechanical arm, resulting in the operation mode of the painting robot itself being fixed and not flexible enough, which in turn affects the painting speed. At the same time, the telescopic mechanical arm of the painting robot generally sprays in a fixed direction, so that small local areas cannot be completely sprayed, thereby significantly reducing the working performance of the painting robot. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a painting robot and a telescopic mechanical arm thereof.

[0005] The technical solution adopted to solve the above technical problems is: a telescopic robotic arm, including a support plate, a connecting rod mechanism is installed at the rear end of the support plate, and a telescopic mechanism is installed at the front end of the support plate. The other ends of the connecting rod mechanism and the telescopic mechanism are both movably connected to a fixed plate, and a coating mechanism is installed on one side surface of the fixed plate.

[0006] Furthermore, the connecting rod mechanism includes a second motor fixedly connected to the rear end of the support plate, the output end of the second motor is fixedly connected to the first drive shaft, the outer wall of the first drive shaft is fixedly connected to a connecting plate, the front end of the other side of the connecting plate is fixedly connected to a support plate, a first connecting rod is rotatably connected between the connecting plate and the support plate, the other end of the first connecting rod is rotatably connected to the second connecting rod, and a sliding groove is provided inside the second connecting rod.

[0007] Through the above technical scheme, when in use, when the coating robot is used for work, the connecting rod mechanism can be used to adjust up and down according to the coating position to ensure the precise adjustment of the coating position. At the same time, the up and down movement of the mechanical arm enables the robot to accurately adjust the vertical position of the spray gun according to the height of the workpiece or the spraying requirements. This is especially important for irregular shapes or multi-layer spraying, such as the top, bottom or side of an object. It can avoid spraying dead corners and ensure uniform coating. Specifically, the second motor at the rear end of the support plate is started to drive the connecting plate fixedly connected to the outer wall of the first drive shaft to rotate. When rotating counterclockwise, it can drive the first connecting rod to move downward, and then pull the second connecting rod to move, so that a certain adjustment can be obtained.

[0008] Furthermore, the telescopic mechanism includes a third motor fixedly connected to the front end of the support plate, the output end of the third motor is fixedly connected to the second drive shaft, the outer wall of the second drive shaft is fixedly connected to a support rod, one side of the support rod is fixedly connected to a fixed groove, a hydraulic cylinder is rotatably connected inside the fixed groove, the other end of the support rod is slidably connected to the slide groove, the other end of the second connecting rod is movably connected to the fixed plate, and the piston end of the hydraulic cylinder is movably connected to the fixed plate.

[0009] Through the above technical scheme, as the connecting rod mechanism moves, the telescopic mechanism can be used to cooperate with it to move back and forth, and the coating position can be preliminarily adjusted, and then it can be accurately coated. In addition, the height can be further adjusted according to the structure of the connecting rod mechanism, and the robotic arm can be adjusted back and forth, so that the spraying angle can better adapt to workpieces of different shapes, especially those that are more complex or have protruding parts. Through the forward and backward movement, the robot can accurately control the spraying to the target area to avoid wasting paint and excessive spraying. Specifically, the third motor at the front end of the support plate is started to drive the support rod on the outer wall of the second drive shaft to rotate, so that the second connecting rod located thereon can be forced to move forward and backward. When the height needs to be adjusted, the connecting rod mechanism can be used to keep the second connecting rod level, and then the support rod is adjusted to slide on the slide groove. After the adjustment is completed, the second connecting rod is rotated and subjected to force. At the same time, the hydraulic cylinder can be started to extend the telescopic rod to drive the fixed plate for adjustment. The second connecting rod is used to cooperate with it, so that the coating angle can be better adjusted to reduce the risk of missed spraying or uneven coating.

[0010] Furthermore, the coating mechanism includes a plurality of fourth motors fixedly connected to the surface of one side of the fixed disk, the output ends of the plurality of fourth motors are fixedly connected to the third drive shafts, the outer walls of the plurality of third drive shafts are fixedly connected to the first gears, a fixed tube is fixedly connected to the surface of one side of the fixed disk, the outer wall of the fixed tube is rotatably connected to a plurality of second gears, the inner walls of the plurality of second gears are respectively sleeved with corresponding drive rods, the other ends of the plurality of drive rods are rotatably connected to movable rods, the other ends of the plurality of movable rods are rotatably connected to nozzles, and the plurality of first gears are respectively meshed with corresponding second gears.

[0011] Through the above technical solution, when the coating work is in progress, the coating mechanism is used to make detailed adjustments, and the adjustment mechanism, connecting rod mechanism and telescopic mechanism can be used for fine adjustment to ensure the adjustment of the coating position, distance and height. The coating mechanism can be rotated and the tilt angle can be adjusted in a smaller area. The rotation ability of the nozzle allows the robot to spray in multiple directions without changing the overall position of the robot or readjusting the spray path. This is particularly suitable for workpieces with complex surfaces, curved shapes or multi-faceted areas, and can ensure that each angle can obtain a uniform and precise coating. Specifically, the spray pipe can be connected to the nozzle through a fixed pipe to ensure the supply of materials, and then multiple fourth motors are started at the same time to drive the corresponding first gear on the third drive shaft to rotate. , since the second gear is connected to the ring on the driving rod through the sleeve and multiple second gears form a sleeved state, it is ensured that the rotation will not cause obstacles. The bottom of the driving rod at the bottom layer is fixedly connected to the second gear at the highest layer, and then the ring of the driving rod in the middle layer passes through the sleeve through the driving rod ring at the bottom layer and is fixedly connected to the second gear in the middle layer, and so on. At this time, the first gear drives the driving rod corresponding to the second gear to start rotating, and then the nozzle on the movable rod connected to it starts to rotate. By rotating the nozzle, the robot can ensure that the coating is more uniform and smooth, and the surface quality is improved. In some specific areas, one of the fourth motors can be started and adjusted to drive the driving rod to rotate, which drives one of the movable rods to deflect, and then the nozzle will deflect to one side, thereby completing the spraying work.

[0012] A painting robot including a telescopic mechanical arm comprises an adjustment mechanism installed at the bottom of a support plate, an outer wall of the adjustment mechanism is provided with a base frame, and a circular ring is fixedly connected to the bottom of the base frame.

[0013] Furthermore, the adjustment mechanism includes a first motor fixedly connected to the top of the base frame, the output end of the first motor is fixedly connected to a connecting rod shaft, the other end of the connecting rod shaft is rotatably connected to a sphere, the outer wall of the sphere is fixedly connected to a first circular plate, the top surface of the first circular plate is movably connected to a plurality of support columns, the bottom of the outer walls of the plurality of support columns are fixedly connected to springs, the tops of the plurality of support columns are slidably connected to semicircular sleeves, the tops of the plurality of semicircular sleeves are fixedly connected to a second circular plate, the bottom of the sphere is rotatably connected to a circular ring, and the other ends of the plurality of springs are fixedly connected to the top of the base frame.

[0014] Through the above technical solution, when in use, a position can be selected to install the painting robot, and then the painting robot can be adjusted by the adjustment mechanism to ensure the working angle of the painting robot during work. By tilting the base, the robot can better adapt to the spraying requirements at different angles. For complex workpiece shapes or difficult-to-reach areas, the tilting function can help the robot adjust the angle of the spray gun, so as to cover the coating more evenly and improve the coating quality. Specifically, the first motor at the top of the chassis is started to drive the connecting rod shaft in a bent shape to rotate. Due to its own gravity and the tilted state of the connecting rod shaft, the sphere can be kept in a tilted state. At this time, the robot located on the mechanism is lowered to the bottom and tilted. At the same time, the first circular plate on the sphere is driven by the rotation, so that the multiple support columns on it can move up and down in the state of the first circular plate rising and falling, thereby compressing the corresponding springs. The multiple springs on the other side will restore the elastic potential energy, thereby forming a tilted state. Under the connection of the semicircular sleeve, the second circular plate at the top can follow the up and down floating and tilted state.

[0015] The beneficial effects of the present invention are as follows: (1) The present invention, by designing an adjustment mechanism, a connecting rod mechanism, a telescopic mechanism and a coating mechanism, can tilt and adjust the bottom of the coating robot when it is working, thereby ensuring that the robot itself can maintain a certain degree of adjustability in height during operation. The tilt and rotation function of the base of the coating robot makes the robot more flexible and accurate when processing complex workpieces, thereby improving the spraying quality, reducing dead angles, and improving the uniformity of the coating, saving production time, and optimizing production efficiency, especially in situations where high-precision and high-quality coating is required. It has significant advantages; (2) The present invention, by designing a connecting rod mechanism and a telescopic mechanism, can adjust the position of the nozzle up and down and front and back when the coating robot is working, thereby ensuring that the spraying position The position is precise enough, and after the initial adjustment, it can be gradually adjusted. Through multi-directional adjustment of up and down, front and back movements, and coordination with the tilt of the base, the robot can accurately control the angle, position and spraying path of the spraying, which greatly improves the quality, efficiency and flexibility of the coating. In particular, for workpieces with complex shapes and multi-angle spraying, it can effectively improve the spraying coverage, reduce operation time, and optimize the use of paint; (3) The present invention designs a coating mechanism. When the coating robot is coating, the nozzle can be adjusted according to the coating part, and it can be used in conjunction with the coating robot itself for workpieces of various shapes, sizes and complex surfaces, which can ensure uniform and efficient spraying and save paint, reduce manual intervention and improve safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the three-dimensional structure of the present invention from a first viewing angle;

[0017] Figure 2 is a schematic diagram of a three-dimensional structure of the present invention from a second viewing angle;

[0018] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0019] Figure 4 It is a front view of the present invention;

[0020] Figure 5 It is a structural schematic diagram of the adjustment mechanism of the present invention;

[0021] Figure 6 is a cross-sectional view of the telescopic mechanism and the connecting rod mechanism of the present invention;

[0022] Figure 7 It is a structural schematic diagram of the coating mechanism of the present invention.

[0023] Figure numerals: 1, chassis; 2, ring; 3, adjustment mechanism; 301, first motor; 302, connecting rod shaft; 303, sphere; 304, first circular plate; 305, support column; 306, spring; 307, semicircular sleeve; 308, second circular plate; 4, support plate; 5, connecting rod mechanism; 501, second motor; 502, first driving shaft; 503, connecting plate; 504, supporting plate; 505, first connecting rod; 50 6. Second connecting rod; 507. Slide groove; 6. Telescopic mechanism; 601. Third motor; 602. Second drive shaft; 603. Support rod; 604. Fixed groove; 605. Hydraulic cylinder; 7. Fixed plate; 8. Painting mechanism; 801. Fourth motor; 802. Third drive shaft; 803. First gear; 804. Fixed tube; 805. Second gear; 806. Drive rod; 807. Movable rod; 808. Spray nozzle. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] like Figure 1-Figure 5As shown, a painting robot of this embodiment includes a base frame 1, a ring 2 is fixedly connected to the bottom of the base frame 1, an adjustment mechanism 3 is installed on the top of the base frame 1, and the adjustment mechanism 3 includes a first motor 301 fixedly connected to the top of the base frame 1, a connecting rod shaft 302 is fixedly connected to the output end of the first motor 301, and a sphere 303 is rotatably connected to the other end of the connecting rod shaft 302, and the outer wall of the sphere 303 is fixedly connected to a first circular plate 304, and the top surface of the first circular plate 304 is movably connected to a plurality of support columns 305, and the bottom of the outer walls of the plurality of support columns 305 are fixedly connected There are springs 306, and the tops of multiple support columns 305 are all slidably connected with semicircular sleeves 307, and the tops of multiple semicircular sleeves 307 are all fixedly connected with second circular plates 308. The bottom of the sphere 303 is rotatably connected to the ring 2, and the other ends of multiple springs 306 are all fixedly connected to the top of the base frame 1. When in use, a position can be selected to install the painting robot, and then the adjustment mechanism 3 can be used to adjust the painting robot to ensure the working angle of the painting robot during work. By tilting the base, the robot can better adapt to the spraying requirements at different angles. For workpieces with complex shapes or hard-to-reach areas, the tilting function can help the robot adjust the angle of the spray gun to more evenly cover the coating and improve the coating quality. Specifically, the first motor 301 on the top of the base frame 1 is started to drive the bent connecting rod shaft 302 to rotate. Due to its own gravity and the tilted state of the connecting rod shaft 302, the sphere 303 can be kept in a tilted state. At this time, the robot located on the mechanism lowers and tilts to the bottom. At the same time, the first circular plate 304 on the sphere 303 is driven by rotation, so that the multiple support columns 305 thereon can move up and down while the first circular plate 304 rises and falls, thereby compressing the corresponding springs 306. The multiple springs 306 on the other side will restore the elastic potential energy, thereby forming a tilted state. Under the connection of the semicircular sleeve 307, the second circular plate 308 on the top can follow the up and down floating and tilted state.

[0026] like Figure 3-Figure 7As shown, a telescopic mechanical arm of a coating robot in this embodiment includes a support plate 4, a connecting rod mechanism 5 is installed at the rear end of the support plate 4, the connecting rod mechanism 5 includes a second motor 501 fixedly connected to the rear end of the support plate 4, the output end of the second motor 501 is fixedly connected to a first driving shaft 502, the outer wall of the first driving shaft 502 is fixedly connected to a connecting plate 503, the front end of the other side of the connecting plate 503 is fixedly connected to a supporting plate 504, a first connecting rod 505 is rotatably connected between the connecting plate 503 and the supporting plate 504, the other end of the first connecting rod 505 is rotatably connected to a second connecting rod 506, and a slide groove 507 is provided inside the second connecting rod 506. When in use, when the coating robot is used for work When the coating is applied, the connecting rod mechanism 5 can be used to adjust up and down according to the coating position to ensure the precise adjustment of the coating position. At the same time, the up and down movement of the mechanical arm enables the robot to accurately adjust the vertical position of the spray gun according to the height of the workpiece or the spraying requirements. This is especially important for irregular shapes or multi-layer spraying, such as the top, bottom or side of an object. It can avoid blind spots in spraying and ensure uniform coating. Specifically, the second motor 501 at the rear end of the support plate 4 is started to drive the connecting plate 503 fixedly connected to the outer wall of the first drive shaft 502 to rotate. When rotating counterclockwise, it can drive the first connecting rod 505 to move downward, and then pull the second connecting rod 506 to move, so that a certain adjustment can be obtained.

[0027] like Figure 3-Figure 4 and Figure 6As shown, a telescopic mechanism 6 is installed at the front end of the support plate 4, and the telescopic mechanism 6 includes a third motor 601 fixedly connected to the front end of the support plate 4, and the output end of the third motor 601 is fixedly connected to the second drive shaft 602, and the outer wall of the second drive shaft 602 is fixedly connected to a support rod 603, and one side of the support rod 603 is fixedly connected to a fixed groove 604, and a hydraulic cylinder 605 is rotatably connected inside the fixed groove 604, and the other end of the support rod 603 is slidably connected to the slide groove 507, and the other end of the second connecting rod 506 is movably connected to the fixed plate 7, and the piston end of the hydraulic cylinder 605 is movably connected to the fixed plate 7. With the movement of the connecting rod mechanism 5, the telescopic mechanism 6 can be used to cooperate with it to move back and forth, and the coating position can be preliminarily adjusted, and then it can be accurately coated. In addition, the height can be further adjusted according to the structure of the connecting rod mechanism 5, and the mechanical arm can be adjusted back and forth so that the spray The coating angle can better adapt to workpieces of different shapes, especially those that are more complex or have protruding parts. By moving back and forth, the robot can accurately control the spraying to the target area to avoid wasting paint and over-spraying. Specifically, the third motor 601 at the front end of the support plate 4 is started to drive the support rod 603 on the outer wall of the second drive shaft 602 to rotate, so that the second connecting rod 506 located thereon can be forced to move forward and backward. When the height needs to be adjusted, the connecting rod mechanism 5 can be used to keep the second connecting rod 506 level, and then adjust the support rod 603 to slide on the slide groove 507. After the adjustment is completed, the second connecting rod 506 is rotated and forced. At the same time, the hydraulic cylinder 605 can be started to extend the telescopic rod to drive the fixed plate 7 for adjustment. The second connecting rod 506 is used to cooperate with it to better adjust the coating angle and reduce the risk of missed spraying or uneven coating.

[0028] like Figure 7As shown, the other ends of the connecting rod mechanism 5 and the telescopic mechanism 6 are movably connected to a fixed disk 7, and a coating mechanism 8 is installed on one side surface of the fixed disk 7. The coating mechanism 8 includes a plurality of fourth motors 801 fixedly connected to the surface of one side of the fixed disk 7, and the output ends of the plurality of fourth motors 801 are fixedly connected to a third driving shaft 802, and the outer walls of the plurality of third driving shafts 802 are fixedly connected to a first gear 803, and a fixed tube 804 is fixedly connected to the surface of one side of the fixed disk 7, and the outer wall of the fixed tube 804 is rotatably connected to a plurality of second gears 805, and the inner walls of the plurality of second gears 805 are respectively sleeved with corresponding driving rods 806, and the other ends of the plurality of driving rods 806 are rotatably connected to The movable rod 807, the other ends of the multiple movable rods 807 are all rotatably connected to the spray head 808, and the multiple first gears 803 are respectively meshed with the corresponding second gears 805. When the coating work is in progress, the coating mechanism 8 is used to make detailed adjustments, and the adjustment mechanism 3, the connecting rod mechanism 5 and the telescopic mechanism 6 can be finely adjusted to ensure the adjustment of the coating position, distance and height. The coating mechanism 8 can be rotated and the tilt angle can be adjusted in a smaller area. The rotation ability of the spray head 808 allows the robot to spray in multiple directions without changing the overall position of the robot or re-adjusting the spray path. This is particularly suitable for those with complex surfaces. The workpiece with a surface, curve shape or multi-faceted area can ensure that each angle can obtain a uniform and precise coating. Specifically, the connecting spray pipe can be connected to the nozzle 808 through the fixed pipe 804 to ensure the supply of materials. Then, multiple fourth motors 801 are started at the same time to drive the corresponding first gear 803 on the third drive shaft 802 to rotate. Since the second gear 805 is connected to the ring on the drive rod 806 through the sleeve and multiple second gears 805 form a sleeve state, it is ensured that the rotation will not cause obstacles. The bottom of the bottom layer of the drive rod 806 is fixedly connected to the second gear 805 of the highest layer, and then the ring of the middle layer of the drive rod 806 is The driving rod 806 ring that passes through the bottom layer through the casing is fixedly connected to the second gear 805 in the middle layer, and so on. At this time, the first gear 803 drives the driving rod 806 corresponding to the second gear 805 to start rotating, and then the nozzle 808 on the movable rod 807 connected thereto starts to rotate. By rotating the nozzle 808, the robot can ensure that the coating is more uniform and smooth, and the surface quality is improved. In some specific areas, one of the fourth motors 801 can be started and adjusted to drive the driving rod 806 to rotate, which in turn drives one of the movable rods 807 to deflect, and then the nozzle 808 will deflect to one side, thereby completing the spraying work.

[0029] The working principle of this embodiment is as follows. When in use, a position can be selected to install the painting robot, and the first motor 301 on the top of the base frame 1 is started to drive the bent connecting rod shaft 302 to rotate. At this time, the robot located on the mechanism is lowered to the bottom and tilted. At the same time, the first circular plate 304 on the sphere 303 is driven to rotate, so that the multiple support columns 305 located thereon can move up and down in a state where the first circular plate 304 rises and falls one after another, thereby compressing the corresponding springs 306, and the multiple springs 306 on the other side will restore the elastic potential energy. After that, the second motor 501 at the rear end of the support plate 4 is started to drive the connecting plate 503 fixedly connected to the outer wall of the first drive shaft 502 to rotate. When it rotates counterclockwise, it can drive the first connecting rod 505 to move downward, and then pull the second connecting rod 506 to move. At the same time, the third motor 601 at the front end of the support plate 4 is started to drive the support rod 603 on the outer wall of the second drive shaft 602 to rotate, so that the second connecting rod 506 located thereon can be forced to move forward and backward. When the height needs to be adjusted, the second connecting rod 506 can be kept level by the connecting rod mechanism 5, and then the support rod 603 is adjusted to slide on the slide groove 507. After the adjustment is completed, the second connecting rod 506 is rotated and subjected to force. At the same time, the hydraulic cylinder 605 can be started to extend the telescopic rod to drive the fixed plate 7 for adjustment. The second connecting rod 506 is used to cooperate with it, and the connecting spray pipe can be connected to the nozzle 808 through the fixed pipe 804 to ensure the supply of materials. Then, multiple fourth motors 801 are started at the same time to drive the corresponding first gear 803 on the third drive shaft 802 to rotate. At this time, the first gear 803 drives the driving rod 806 corresponding to the second gear 805 to start rotating, and then the nozzle 808 on the movable rod 807 connected thereto starts to rotate. In some specific areas, one of the fourth motors 801 can be started and adjusted to drive the driving rod 806 to rotate. At this time, one of the movable rods 807 is deflected, and then the nozzle 808 will deflect to one side. At this point, the spraying process of the entire painting robot is completed.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A telescopic mechanical arm, comprising a support plate (4), characterized in that: A connecting rod mechanism (5) is installed at the rear end of the support plate (4), a telescopic mechanism (6) is installed at the front end of the support plate (4), the other ends of the connecting rod mechanism (5) and the telescopic mechanism (6) are both movably connected to a fixed plate (7), and a coating mechanism (8) is installed on one side surface of the fixed plate (7).

2. The telescopic mechanical arm according to claim 1, characterized in that: The connecting rod mechanism (5) comprises a second motor (501) fixedly connected to the rear end of the support plate (4); the output end of the second motor (501) is fixedly connected to the first drive shaft (502); the outer wall of the first drive shaft (502) is fixedly connected to a connecting plate (503); the front end of the other side of the connecting plate (503) is fixedly connected to a support plate (504); a first connecting rod (505) is rotatably connected between the connecting plate (503) and the support plate (504); the other end of the first connecting rod (505) is rotatably connected to a second connecting rod (506); a sliding groove (507) is provided inside the second connecting rod (506).

3. The telescopic mechanical arm according to claim 2, characterized in that: The telescopic mechanism (6) comprises a third motor (601) fixedly connected to the front end of the support plate (4); the output end of the third motor (601) is fixedly connected to a second drive shaft (602); the outer wall of the second drive shaft (602) is fixedly connected to a support rod (603); one side of the support rod (603) is fixedly connected to a fixing groove (604); and a hydraulic cylinder (605) is rotatably connected inside the fixing groove (604).

4. The telescopic mechanical arm according to claim 3, characterized in that: The other end of the support rod (603) is slidably connected to the slide groove (507), the other end of the second connecting rod (506) is movably connected to the fixed plate (7), and the piston end of the hydraulic cylinder (605) is movably connected to the fixed plate (7).

5. The telescopic mechanical arm according to claim 1, characterized in that: The coating mechanism (8) comprises a plurality of fourth motors (801) fixedly connected to the surface of one side of the fixed disk (7); the output ends of the plurality of fourth motors (801) are fixedly connected to the third drive shaft (802); the outer walls of the plurality of third drive shafts (802) are fixedly connected to the first gear (803); a fixed tube (804) is fixedly connected to the surface of one side of the fixed disk (7); the outer wall of the fixed tube (804) is rotatably connected to a plurality of second gears (805); the inner walls of the plurality of second gears (805) are respectively sleeved with corresponding drive rods (806); the other ends of the plurality of drive rods (806) are rotatably connected to movable rods (807); the other ends of the plurality of movable rods (807) are rotatably connected to spray heads (808).

6. The telescopic mechanical arm according to claim 5, characterized in that: The plurality of first gears (803) are respectively meshed with corresponding second gears (805).

7. A painting robot comprising the telescopic mechanical arm according to any one of claims 1 to 6, characterized in that: It comprises an adjustment mechanism (3) installed at the bottom of a support plate (4); the outer wall of the adjustment mechanism (3) is provided with a base frame (1); and the bottom of the base frame (1) is fixedly connected with a circular ring (2).

8. The painting robot according to claim 7, characterized in that: The adjustment mechanism (3) comprises a first motor (301) fixedly connected to the top of the base frame (1); the output end of the first motor (301) is fixedly connected to a connecting rod shaft (302); the other end of the connecting rod shaft (302) is rotatably connected to a sphere (303); the outer wall of the sphere (303) is fixedly connected to a first circular plate (304); the top surface of the first circular plate (304) is movably connected to a plurality of support columns (305); the bottoms of the outer walls of the plurality of support columns (305) are fixedly connected to springs (306); the tops of the plurality of support columns (305) are slidably connected to semicircular sleeves (307); the tops of the plurality of semicircular sleeves (307) are fixedly connected to second circular plates (308).

9. The painting robot according to claim 8, characterized in that: The bottom of the sphere (303) is rotatably connected to the ring (2), and the other ends of the plurality of springs (306) are fixedly connected to the top of the base frame (1).

Images