Automatic reloading device for building spraying robot

Abstract

The application relates to the technical field of spraying, in particular to a building spraying robot automatic material changing device. The device is used for conveniently changing paint of different colors by the spraying robot, the operation is simple, and the working efficiency is improved. The device comprises a walking mechanism, four groups of supports, a material box and a material changing mechanism. The four groups of supports are installed at the top end of the walking mechanism, the spraying robot is installed at the top end of the four groups of supports, the material box is installed on the inner side of the four groups of supports, paint is arranged in the material box, the material changing mechanism is installed on the two groups of supports at the front side, the material changing mechanism is communicated with the material box, the material changing mechanism comprises four groups of auxiliary material boxes, a clean water tank, a waste water tank, a main electromagnetic valve, a material guide pipe, a multi-way joint, five groups of auxiliary electromagnetic valves, an assembling mechanism and a positioning mechanism, and the positioning mechanism is installed on the assembling mechanism.

Description

Technical Field

[0001] This invention relates to the field of spraying technology, and in particular to an automatic material changing device for building spraying robots. Background Technology

[0002] A painting robot is an industrial robot that can automatically spray paint or apply other coatings. It is also called a spray painting robot.

[0003] However, the painting robot only has one set of paint bins. When it is necessary to change to other colors of paint, the paint bins need to be cleaned before being filled with other colors of paint. This makes it inconvenient to change the paint on the painting robot, and the operation is cumbersome, resulting in low work efficiency. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides an automatic material changing device for a building spraying robot, which makes it easier for the spraying robot to change paint of different colors, is simple to operate, and improves its working efficiency.

[0005] The automatic material changing device for a building spraying robot of the present invention includes a walking mechanism, four sets of supports, a material box, and a material changing mechanism. The four sets of supports are mounted on top of the walking mechanism, and the spraying robot is mounted on top of the four sets of supports. The material box is mounted inside the four sets of supports and contains paint. The material changing mechanism is mounted on the front two sets of supports and is connected to the material box. The material changing mechanism includes four sets of auxiliary material boxes, a clean water tank, a wastewater tank, a main solenoid valve, a guide pipe, a multi-way connector, five sets of auxiliary solenoid valves, an assembly mechanism, and a positioning mechanism. The four sets of auxiliary material boxes are mounted at the front end of the front two sets of supports via the assembly mechanism. Each of the four auxiliary material boxes contains paint of a different color. The clean water tank is mounted on... The rear of the two sets of brackets on the rear side is equipped with a clean water tank containing clean water. The wastewater tank is installed at the right end of the two sets of brackets on the right side. The top output end of the guide pipe is connected to the input end of the multi-way connector. The top output end of the multi-way connector is connected to the input end of the spraying robot's spray pipe. The bottom input end of the guide pipe extends to the bottom of the material box. The main solenoid valve is installed on the upper part of the guide pipe. Five sets of auxiliary solenoid valves are installed on the multi-way connectors respectively. The bottom ends of the four sets of auxiliary material boxes are all connected with connecting pipes. The connecting pipes of the four sets of auxiliary material boxes are respectively connected to the four interfaces of the multi-way connectors. The bottom end of the clean water tank is connected with a connecting pipe. The clean water tank connecting pipe is connected to the interface of the multi-way connector. The positioning mechanism is installed on the assembly mechanism.

[0006] The automatic material changing device for a building spraying robot of the present invention comprises an assembly mechanism including a U-shaped frame, a reducer, a motor, two sets of gears, two sets of L-shaped plates, four sets of rotating circular plates, four sets of stop caps, an installation mechanism, and an alarm mechanism. The U-shaped frame is installed at the front end of the two sets of supports on the front side. The reducer is installed at the inner end of the U-shaped frame, and the motor is installed at the top of the reducer. The output end of the motor is connected to the input end of the reducer. The output shaft of the reducer passes through the U-shaped frame and extends to the front side of the U-shaped frame. The right gear of the two sets of gears is connected to the output shaft of the reducer, and the left gear is rotatably connected to the left side of the front end of the U-shaped frame. The two sets of gears mesh with each other. The two sets of L-shaped plates... The plates are respectively installed at the front end of the two sets of gears. The upper and lower parts of the two sets of L-shaped plates are connected by through holes. The rear end of the four sets of rotating circular plates is provided with a rotating shaft. The rotating shaft on the four sets of rotating circular plates is rotatably connected to the four sets of through holes on the two sets of L-shaped plates. The four sets of stop caps are respectively installed at the rear end of the rotating shafts of the four sets of rotating circular plates. The alarm mechanism is installed on the two sets of L-shaped plates and is connected to the four sets of rotating circular plates. The installation mechanism is installed on the alarm mechanism. The four sets of rotating circular plates are installed on the top of the four sets of auxiliary material boxes through the alarm mechanism and the installation mechanism. The positioning mechanism is installed at the rear end of the two sets of L-shaped plates and is connected to the four sets of stop caps.

[0007] The automatic material changing device for a building spraying robot of the present invention includes an alarm mechanism comprising two sets of telescopic mechanisms, two sets of movable plates, four sets of telescopic rods, four sets of proximity switches, four sets of connecting plates, four sets of connecting blocks, eight sets of connecting shafts, eight sets of springs, and four sets of top plates. The two sets of telescopic mechanisms are respectively installed on the upper rear end of the two sets of L-shaped plates. The two sets of movable plates are respectively installed on the output ends of the two sets of telescopic mechanisms. The four sets of telescopic rods are respectively installed on the upper front end and lower front end of the two sets of movable plates. The upper and middle parts of the two sets of L-shaped plates are connected by through slots. The four sets of telescopic rods are slidably connected to the four through slots of the two sets of L-shaped plates. The four sets of proximity switches are respectively installed on the front of the four sets of telescopic rods. Four sets of proximity switches are electrically connected to the audible and visual alarms in the control room. Four sets of connecting blocks are respectively installed on the lower front side of the four sets of connecting plates. The mounting mechanism is installed on the four sets of connecting blocks. The left and right sides of the four sets of rotating circular plates are connected with sliding holes. The bottom ends of the eight sets of connecting shafts pass through the eight sets of sliding holes on the four sets of rotating circular plates and are connected to the top ends of the four sets of connecting plates. The eight sets of connecting shafts are slidably connected to the eight sets of sliding holes on the four sets of rotating circular plates. The four sets of top plates are respectively installed on the top ends of each pair of corresponding connecting shafts. Eight sets of springs are respectively sleeved on the upper part of the eight sets of connecting shafts. The bottom ends of the eight sets of springs are connected to the top ends of the four sets of rotating circular plates. The top ends of the eight sets of springs are connected to the bottom ends of the four sets of top plates.

[0008] The automatic material changing device for building spraying robots of the present invention includes an installation mechanism comprising four sets of mounting rings and four sets of fixing rings. The four sets of mounting rings are respectively installed at the front end of four sets of connecting blocks, and the four sets of fixing rings are respectively installed at the top of four sets of auxiliary material boxes. The four sets of fixing rings are fitted together with the four sets of mounting rings.

[0009] The automatic material changing device for building spraying robots of the present invention includes a positioning mechanism comprising four sets of electromagnets and four sets of metal plates. The four sets of electromagnets are respectively installed on the upper and middle sides of the rear ends of two sets of L-shaped plates, and the four sets of metal plates are respectively installed on the top of four sets of baffles. The positions of the four sets of metal plates correspond to the four sets of electromagnets.

[0010] The automatic material changing device for a building spraying robot of the present invention has a telescopic mechanism configured as a servo electric cylinder.

[0011] The automatic material changing device for building spraying robots of the present invention also includes two sets of reinforcing ribs, which are respectively installed on the lower inner side of two sets of L-shaped plates.

[0012] The automatic material changing device for building spraying robots of the present invention also includes two sets of L-shaped reinforcing plates, which are respectively installed on the left and right sides of the top of the U-shaped frame, and the rear ends of the two sets of L-shaped reinforcing plates are connected to the front ends of the two sets of brackets on the front side.

[0013] Compared with the prior art, the beneficial effects of this invention are as follows: According to the spraying requirements, the auxiliary solenoid valve corresponding to the paint on the multi-port connector is opened. If the paint is from one of the four auxiliary material tanks, it is sprayed out from the spraying robot's nozzle through the connecting pipe and the multi-port connector. When it is necessary to replace the paint in the material tank, the auxiliary solenoid valve on the multi-port connector is closed. Then, the auxiliary solenoid valve on the multi-port connector, which is connected to the clean water tank, aligns the spraying robot's nozzle with the waste water tank. Water from the clean water tank is then sprayed from the nozzle into the waste water tank through the multi-port connector, thereby improving the spraying efficiency of the multi-port connector. The connector and the spraying robot's nozzle are cleaned. Then, the auxiliary solenoid valve on the multi-port connector is closed, and the solenoid valve of the corresponding paint pipeline is opened. The spraying robot's spray pipe is then aligned with the wastewater tank, and the paint is sprayed evenly. The paint in the tank is sprayed onto the wall through the spraying robot's nozzle via the guide pipe and the multi-port connector. According to the above operation, the spraying robot can spray different colors of paint. By setting up this device, the spraying robot can easily change paints of different colors, the operation is relatively simple, and its work efficiency is improved. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the connection structure between the gear and the L-shaped plate;

[0016] Figure 3 yes Figure 1 A magnified structural diagram of A in the middle;

[0017] Figure 4 This is a schematic diagram of the connection structure between the speed reducer and the motor;

[0018] Figure 5 yes Figure 4A magnified structural diagram of B in the diagram;

[0019] Figure 6 This is a schematic diagram of the connection structure between the L-shaped plate and the reinforcing rib;

[0020] The following are labels in the attached diagram: 1. Walking mechanism; 2. Support frame; 3. Material bin; 4. Auxiliary material bin; 5. Clean water tank; 6. Waste water tank; 7. Main solenoid valve; 8. Guide pipe; 9. Multi-port connector; 10. Secondary solenoid valve; 11. U-shaped frame; 12. Reducer; 13. Motor; 14. Gear; 15. L-shaped plate; 16. Rotating circular plate; 17. Stop cap; 18. Telescopic mechanism; 19. Moving plate; 20. Telescopic rod; 21. Proximity switch; 22. Through slot; 23. Connecting plate; 24. Connecting block; 25. Connecting shaft; 26. Spring; 27. Top plate; 28. Mounting ring; 29. ​​Fixing ring; 30. Electromagnet; 31. Metal sheet; 32. Reinforcing rib; 33. L-shaped reinforcing plate. Detailed Implementation

[0021] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0022] like Figures 1 to 6 As shown, the automatic material changing device for the building spraying robot of the present invention includes a walking mechanism 1, four sets of supports 2, a material box 3, and a material changing mechanism. The four sets of supports 2 are installed on the top of the walking mechanism 1, the spraying robot is installed on the top of the four sets of supports 2, the material box 3 is installed inside the four sets of supports 2, and the material box 3 is filled with paint. The material changing mechanism is installed on the two front sets of supports 2 and is connected to the material box 3. The material changing mechanism includes four sets of auxiliary material boxes 4, a clean water tank 5, a wastewater tank 6, a main solenoid valve 7, a guide pipe 8, a multi-way connector 9, five sets of auxiliary solenoid valves 10, an assembly mechanism, and a positioning mechanism. The four sets of auxiliary material boxes 4 are installed at the front end of the two front sets of supports 2 through the assembly mechanism. Each of the four sets of auxiliary material boxes 4 is filled with paint of different colors and clean water. Box 5 is installed at the rear end of the two sets of brackets 2 on the rear side. Clean water is provided in the clean water box 5. Waste water box 6 is installed at the right end of the two sets of brackets 2 on the right side. The top output end of the guide pipe 8 is connected to the input end of the multi-way connector 9. The top output end of the multi-way connector 9 is connected to the input end of the spraying robot nozzle. The bottom input end of the guide pipe 8 extends to the bottom of the material box 3. The main solenoid valve 7 is installed on the upper part of the guide pipe 8. Five sets of auxiliary solenoid valves 10 are respectively installed on the multi-way connector 9. The bottom ends of the four sets of auxiliary material boxes 4 are all connected with connecting pipes. The connecting pipes of the four sets of auxiliary material boxes 4 are respectively connected to the four sets of interfaces of the multi-way connector 9. The bottom end of the clean water box 5 is connected with a connecting pipe. The connecting pipe of the clean water box 5 is connected to the interface of the multi-way connector 9. The positioning mechanism is installed on the assembly mechanism.

[0023] According to the spraying requirements, open the auxiliary solenoid valve 10 on the multi-port connector 9 corresponding to the paint material. If the paint is from one of the four auxiliary material tanks 4, it will be sprayed out from the spraying robot's nozzle through the connecting pipe and multi-port connector 9. When it is necessary to replace the paint in the material tank 3, close the auxiliary solenoid valve 10 on the multi-port connector 9. Then, align the spraying robot's nozzle with the wastewater tank 6 using the auxiliary solenoid valve 10 on the multi-port connector 9 connected to the clean water tank 5. The water in the clean water tank 5 will then be sprayed out from the nozzle through the multi-port connector 9 into the wastewater tank 6. The multi-port connector 9 and the spraying robot's nozzle are cleaned, then the auxiliary solenoid valve 10 on the multi-port connector 9 is closed. The spraying robot's spray pipe is then aligned with the wastewater tank 6, and the paint is sprayed evenly. The paint in the material tank 4 is sprayed onto the wall of the spraying robot's nozzle through the guide pipe 8 and the multi-port connector 9. According to the above operation, the spraying robot can spray different colors of paint. By setting up this device, the spraying robot can easily change paints of different colors, the operation is relatively simple, and its work efficiency is improved.

[0024] The automatic material changing device for a building spraying robot of the present invention comprises an assembly mechanism including a U-shaped frame 11, a reducer 12, a motor 13, two sets of gears 14, two sets of L-shaped plates 15, four sets of rotating circular plates 16, four sets of stop caps 17, an installation mechanism, and an alarm mechanism. The U-shaped frame 11 is installed at the front end of the two sets of supports 2 on the front side. The reducer 12 is installed at the inner end of the U-shaped frame 11, and the motor 13 is installed at the top of the reducer 12. The output end of the motor 13 is connected to the input end of the reducer 12. The output shaft of the reducer 12 passes through the U-shaped frame 11 and extends to the front side of the U-shaped frame 11. The right gear 14 of the two sets of gears 14 is connected to the output shaft of the reducer 12, and the left gear 14 is rotatably connected to the left side of the front end of the U-shaped frame 11. 14-phase meshing, two sets of L-shaped plates 15 are respectively installed at the front end of the two sets of gears 14, and the upper and lower parts of the two sets of L-shaped plates 15 are connected with through holes. The rear end of the four sets of rotating circular plates 16 is provided with a rotating shaft. The rotating shaft on the four sets of rotating circular plates 16 is rotatably connected to the four sets of through holes on the two sets of L-shaped plates 15. The four sets of baffles 17 are respectively installed at the rear end of the rotating shafts of the four sets of rotating circular plates 16. The alarm mechanism is installed on the two sets of L-shaped plates 15 and is connected to the four sets of rotating circular plates 16. The installation mechanism is installed on the alarm mechanism. The four sets of rotating circular plates 16 are installed on the top of the four sets of auxiliary material boxes 4 through the alarm mechanism and the installation mechanism. The positioning mechanism is installed at the rear end of the two sets of L-shaped plates 15 and is connected to the four sets of baffles 17.

[0025] By setting up a U-shaped frame 11, a reducer 12, a motor 13, gears 14, L-shaped plates 15, rotating circular plates 16, and stop caps 17, and turning on the motor 13, the reducer 12 drives the right gear 14 to rotate, which in turn meshes with the left gear 14. The two sets of gears 14 then drive the two sets of L-shaped plates 15 to rotate outwards. The four auxiliary material boxes 4 rotate and remain vertical under the cooperation of the four sets of rotating circular plates 16 and the four sets of stop caps 17. After the two sets of L-shaped plates 15 have rotated 90 degrees, the motor 13 is turned off, and different colors of paint are added to the four auxiliary material boxes 4. Then, the motor 13 is turned on in the reverse direction. 3. The reducer 12 drives the right gear 14 to rotate in the opposite direction. The right gear 14 meshes with the left gear 14. The two sets of gears 14 drive the two sets of L-shaped plates 15 to rotate inward. The four sets of auxiliary material boxes 4 rotate and always remain vertical under the cooperation of the four sets of rotating circular plates 16 and the four sets of stop caps 17. When the two sets of L-shaped plates 15 are in the vertical state, the motor 13 is turned off and the positioning mechanism is powered on. The positioning mechanism fixes the four sets of stop caps 17, thereby fixing the four sets of auxiliary material boxes 4. This not only facilitates the feeding of the four sets of auxiliary material boxes 4, but also saves the space occupied by the four sets of auxiliary material boxes 4.

[0026] The automatic material changing device for a building spraying robot of the present invention includes an alarm mechanism comprising two sets of telescopic mechanisms 18, two sets of moving plates 19, four sets of telescopic rods 20, four sets of proximity switches 21, four sets of connecting plates 23, four sets of connecting blocks 24, eight sets of connecting shafts 25, eight sets of springs 26, and four sets of top plates 27. The two sets of telescopic mechanisms 18 are respectively installed on the upper rear end of the two sets of L-shaped plates 15. The two sets of moving plates 19 are respectively installed on the output ends of the two sets of telescopic mechanisms 18. The four sets of telescopic rods 20 are respectively installed on the upper front end and lower front end of the two sets of moving plates 19. The upper and middle parts of the two sets of L-shaped plates 15 are connected by through slots 22. The four sets of telescopic rods 20 are slidably connected to the four through slots 22 of the two sets of L-shaped plates 15. The four sets of proximity switches 21 are respectively installed on the four sets of telescopic rods. At the front of the 20, four sets of proximity switches 21 are electrically connected to the audible and visual alarm in the control room. Four sets of connecting blocks 24 are respectively installed on the lower front side of four sets of connecting plates 23. The mounting mechanism is installed on the four sets of connecting blocks 24. The left and right sides of the four sets of rotating circular plates 16 are connected with sliding holes. The bottom ends of eight sets of connecting shafts 25 pass through the eight sets of sliding holes on the four sets of rotating circular plates 16 and are connected to the top of the four sets of connecting plates 23. The eight sets of connecting shafts 25 are slidably connected to the eight sets of sliding holes on the four sets of rotating circular plates 16. Four sets of top plates 27 are respectively installed on the top of each pair of corresponding connecting shafts 25. Eight sets of springs 26 are respectively sleeved on the upper part of the eight sets of connecting shafts 25. The bottom ends of the eight sets of springs 26 are connected to the top of the four sets of rotating circular plates 16. The top ends of the eight sets of springs 26 are connected to the bottom ends of the four sets of top plates 27.

[0027] By configuring telescopic mechanisms 18, movable plates 19, telescopic rods 20, proximity switches 21, through slots 22, connecting plates 23, connecting blocks 24, connecting shafts 25, springs 26, and top plates 27, the four auxiliary material boxes 4, after being filled with paint, will move downwards due to their weight. The four auxiliary material boxes 4, through the mounting mechanism, will drive the four connecting blocks 24 downwards. The four connecting blocks 24, in turn, will drive the four top plates 27 downwards through the four connecting plates 23 and eight connecting shafts 25. The eight springs 26 will be in a compressed state. Then, the two telescopic mechanisms 18 will be opened, causing the two movable plates 19 to move forward. The moving plate 19 drives the four sets of telescopic rods 20 to pass through the four sets of through slots 22 on the two sets of L-shaped plates 15. When the four sets of proximity switches 21 on the four sets of telescopic rods 20 are aligned with the four sets of top plates 27, the two sets of telescopic mechanisms 18 are closed. As the paint in the four sets of auxiliary material boxes 4 is used, the eight sets of springs 26 slowly extend and the four sets of top plates 27 move upward. When the top plate 27 contacts the proximity switch 21 on the telescopic rod 20, it indicates that the paint in the auxiliary material box 4 is used up, and the sound and light alarm in the control room will sound an alarm to remind the staff to add paint in time. When the paint in the auxiliary material box 4 is used up, it can automatically sound an alarm.

[0028] The automatic material changing device for building spraying robot of the present invention has an installation mechanism including four sets of mounting rings 28 and four sets of fixing rings 29. The four sets of mounting rings 28 are respectively installed at the front end of four sets of connecting blocks 24, and the four sets of fixing rings 29 are respectively installed at the top of four sets of auxiliary material boxes 4. The four sets of fixing rings 29 and the four sets of mounting rings 28 are fitted together.

[0029] By setting the mounting ring 28 and the fixing ring 29, the four sets of auxiliary material boxes 4 are passed through the four sets of mounting rings 28. The fixing rings 29 on the four sets of auxiliary material boxes 4 are fitted with the four sets of mounting rings 28, thereby fixing the four sets of auxiliary material boxes 4, which serves to install the auxiliary material boxes 4 and facilitates the disassembly and assembly of the auxiliary material boxes 4.

[0030] The automatic material changing device for building spraying robot of the present invention includes a positioning mechanism comprising four sets of electromagnets 30 and four sets of metal plates 31. The four sets of electromagnets 30 are respectively installed on the upper and middle sides of the rear ends of two sets of L-shaped plates 15, and the four sets of metal plates 31 are respectively installed on the top of four sets of baffles 17. The positions of the four sets of metal plates 31 correspond to those of the four sets of electromagnets 30.

[0031] By setting up electromagnets 30 and metal plates 31, when the two sets of L-shaped plates 15 rotate to the vertical position, the four sets of electromagnets 30 are energized. The four sets of electromagnets 30 then attract the four sets of metal plates 31 to fix the four sets of baffles 17, thereby fixing the four sets of auxiliary material boxes 4 and preventing the auxiliary material boxes 4 from shaking during the spraying process of the spraying robot.

[0032] The automatic material changing device for a building spraying robot of the present invention, wherein the telescopic mechanism 18 is configured as a servo electric cylinder;

[0033] Servo electric cylinders offer precise control, a simple structure, and easy installation.

[0034] The automatic material changing device for building spraying robot of the present invention also includes two sets of reinforcing ribs 32, which are respectively installed on the lower inner side of two sets of L-shaped plates 15.

[0035] By adding reinforcing ribs 32, the strength of the L-shaped plate 15 can be increased.

[0036] The automatic material changing device for building spraying robot of the present invention also includes two sets of L-shaped reinforcing plates 33. The two sets of L-shaped reinforcing plates 33 are respectively installed on the left side and the right side of the top of the U-shaped frame 11, and the rear ends of the two sets of L-shaped reinforcing plates 33 are connected to the front ends of the two sets of brackets 2 on the front side.

[0037] By setting up L-shaped reinforcing plates 33, the connection strength between the U-shaped frame 11 and the two sets of front supports 2 can be increased, thereby improving the stability of the U-shaped frame 11.

[0038] The automatic material changing device for the building spraying robot of the present invention, during operation, firstly, passes four sets of auxiliary material boxes 4 through four sets of mounting rings 28. The fixing rings 29 on the four sets of auxiliary material boxes 4 are then fitted with the four sets of mounting rings 28 to fix the four sets of auxiliary material boxes 4. Then, the motor 13 is turned on, and the reducer 12 drives the right gear 14 to rotate. The right gear 14 meshes with the left gear 14, and the two sets of gears 14 drive the two sets of L-shaped plates 15 to rotate outward. The four sets of auxiliary material boxes 4 rotate under the cooperation of the four sets of rotating circular plates 16 and the four sets of stop caps 17 and always remain in a vertical state. After the two sets of L-shaped plates 15 have rotated 90 degrees, the motor 13 is turned off, and different colors of paint are added to the four sets of auxiliary material boxes 4 respectively. The motor 13 is then turned on in the opposite direction, and the reducer 12... The right gear 14 is driven to rotate in the opposite direction, and the right gear 14 meshes with the left gear 14. The two sets of gears 14 drive the two sets of L-shaped plates 15 to rotate inward. The four sets of auxiliary material boxes 4 rotate and remain vertical under the cooperation of the four sets of rotating circular plates 16 and the four sets of baffles 17. When the two sets of L-shaped plates 15 are in a vertical state, the motor 13 is turned off, and then the four sets of electromagnets 30 are energized. The four sets of electromagnets 30 attract the four sets of metal plates 31 and fix the four sets of baffles 17, thereby fixing the four sets of auxiliary material boxes 4. After the four sets of auxiliary material boxes 4 are filled with paint, they will move downward due to their weight. The four sets of auxiliary material boxes 4 drive the four sets of connecting blocks 24 to move downward through the four sets of fixing rings 29. The four sets of connecting blocks 24 are connected to the four sets of connecting plates 23 and the eight sets of connecting blocks 24. The connecting shaft 25 drives the four sets of top plates 27 to move downwards, while the eight sets of springs 26 are in a compressed state. Then, the two sets of telescopic mechanisms 18 are opened, which drive the two sets of moving plates 19 to move forward. The two sets of moving plates 19 drive the four sets of telescopic rods 20 to pass through the four sets of through slots 22 on the two sets of L-shaped plates 15. When the four sets of proximity switches 21 on the four sets of telescopic rods 20 correspond to the positions of the four sets of top plates 27, the two sets of telescopic mechanisms 18 are closed. According to the spraying requirements, the auxiliary solenoid valve 10 on the multi-port connector 9 corresponding to the paint material is opened. If it is paint from one of the four auxiliary material tanks 4, the paint is sprayed out from the spraying robot's nozzle through the connecting pipe and the multi-port connector 9. When it is necessary to replace the paint in the material tank 3, the auxiliary solenoid valve 10 on the multi-port connector 9 is closed, and then the multi-port connector 9 is opened. The auxiliary solenoid valve 10, connected to the clean water tank 5 on the multi-connector 9, aligns the spraying robot's nozzle with the waste water tank 6. Water from the clean water tank 5 is then sprayed from the nozzle into the waste water tank 6 through the multi-connector 9, thus cleaning the multi-connector 9 and the spraying robot's nozzle. Afterward, the auxiliary solenoid valve 10 on the multi-connector 9 is closed, and the main solenoid valve 7 is opened. Paint from the material tank 3 is then sprayed out from the spraying robot's nozzle through the guide pipe 8 and the multi-connector 9. According to the above operation, the spraying robot can spray different colors of paint. As the paint in the four auxiliary material tanks 4 is used, the eight springs 26 slowly extend, and the four top plates 27 move upward. When the top plate 27 contacts the proximity switch 21 on the telescopic rod 20, it indicates that the paint in the auxiliary material tank 4 is used up.The audible and visual alarm in the control room will sound to remind staff to add materials in a timely manner.

[0039] The automatic material changing device for building spraying robots of the present invention can be installed, connected or set in a common mechanical manner, and can be implemented as long as it can achieve its beneficial effect. The reducer 12, motor 13, telescopic mechanism 18 and proximity switch 21 of the automatic material changing device for building spraying robots of the present invention are commercially available. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual.

[0040] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An automatic material changing device for a building spraying robot, comprising a walking mechanism (1), four sets of supports (2), a material box (3), and a material changing mechanism, wherein the four sets of supports (2) are installed on the top of the walking mechanism (1), the spraying robot is installed on the top of the four sets of supports (2), the material box (3) is installed inside the four sets of supports (2), and the material box (3) contains paint, and the material changing mechanism is installed on the two front sets of supports (2), and the material changing mechanism is connected to the material box (3), characterized in that, The material changing mechanism includes four sets of auxiliary material boxes (4), a clean water tank (5), a waste water tank (6), a main solenoid valve (7), a guide pipe (8), a multi-way connector (9), five sets of auxiliary solenoid valves (10), an assembly mechanism, and a positioning mechanism. The four sets of auxiliary material boxes (4) are installed at the front end of the two sets of brackets (2) on the front side through the assembly mechanism. Each of the four sets of auxiliary material boxes (4) is filled with paint of different colors. The clean water tank (5) is installed at the rear end of the two sets of brackets (2) on the rear side. The clean water tank (5) is filled with clean water. The waste water tank (6) is installed at the right end of the two sets of brackets (2) on the right side. The top output end of the guide pipe (8) is connected to the multi-way connector (9). The input end is connected, the top output end of the multi-way connector (9) is connected to the input end of the spraying robot nozzle, the bottom input end of the guide pipe (8) extends to the bottom of the material box (3), the main solenoid valve (7) is installed on the upper part of the guide pipe (8), the five sets of auxiliary solenoid valves (10) are respectively installed on the multi-way connector (9), the bottom ends of the four sets of auxiliary material boxes (4) are all connected with connecting pipes, the connecting pipes of the four sets of auxiliary material boxes (4) are respectively connected to the four sets of interfaces of the multi-way connector (9), the bottom end of the clean water tank (5) is connected with a connecting pipe, the connecting pipe of the clean water tank (5) is connected to the interface of the multi-way connector (9), and the positioning mechanism is installed on the assembly mechanism; The assembly mechanism includes a U-shaped frame (11), a reducer (12), a motor (13), two sets of gears (14), two sets of L-shaped plates (15), four sets of rotating circular plates (16), four sets of stop caps (17), an installation mechanism, and an alarm mechanism. The U-shaped frame (11) is installed at the front end of the two sets of brackets (2). The reducer (12) is installed at the inner end of the U-shaped frame (11). The motor (13) is installed at the top of the reducer (12). The output end of the motor (13) is connected to the input end of the reducer (12). The output shaft of the reducer (12) passes through the U-shaped frame (11) and extends to the front side of the U-shaped frame (11). The right gear (14) of the two sets of gears (14) is connected to the output shaft of the reducer (12), and the left gear (14) is rotatably connected to the left side of the front end of the U-shaped frame (11). (14) meshing, two sets of L-shaped plates (15) are respectively installed at the front end of two sets of gears (14), the upper and lower parts of the two sets of L-shaped plates (15) are connected with through holes, the rear ends of the four sets of rotating round plates (16) are all provided with rotating shafts, the rotating shafts on the four sets of rotating round plates (16) are rotatably connected to the four sets of through holes on the two sets of L-shaped plates (15), the four sets of stop caps (17) are respectively installed at the rear end of the rotating shafts of the four sets of rotating round plates (16), the alarm mechanism is installed on the two sets of L-shaped plates (15), the alarm mechanism is connected to the four sets of rotating round plates (16), the installation mechanism is installed on the alarm mechanism, the four sets of rotating round plates (16) are installed on the top of the four sets of auxiliary material boxes (4) through the alarm mechanism and the installation mechanism, the positioning mechanism is installed at the rear end of the two sets of L-shaped plates (15), and the positioning mechanism is connected to the four sets of stop caps (17); The positioning mechanism includes four sets of electromagnets (30) and four sets of metal plates (31). The four sets of electromagnets (30) are respectively installed on the upper and middle sides of the rear end of the two sets of L-shaped plates (15), and the four sets of metal plates (31) are respectively installed on the top of the four sets of stop caps (17). The positions of the four sets of metal plates (31) correspond to the four sets of electromagnets (30).

2. The automatic material changing device for a building spraying robot as described in claim 1, characterized in that, The alarm mechanism includes two sets of telescopic mechanisms (18), two sets of movable plates (19), four sets of telescopic rods (20), four sets of proximity switches (21), four sets of connecting plates (23), four sets of connecting blocks (24), eight sets of connecting shafts (25), eight sets of springs (26), and four sets of top plates (27). The two sets of telescopic mechanisms (18) are respectively installed on the upper rear end of the two sets of L-shaped plates (15). The two sets of movable plates (19) are respectively installed on the output end of the two sets of telescopic mechanisms (18). The four sets of telescopic rods (20) are respectively installed on the upper front end and the lower front end of the two sets of movable plates (19). The upper and middle parts of the two sets of L-shaped plates (15) are connected by through slots (22). The four sets of telescopic rods (20) are slidably connected to the four sets of through slots (22) of the two sets of L-shaped plates (15). The four sets of proximity switches (21) are respectively installed on the front of the four sets of telescopic rods (20). Four sets of proximity switches (21) are electrically connected to the sound and light alarm in the control room. Four sets of connecting blocks (24) are respectively installed on the lower front side of four sets of connecting plates (23). The mounting mechanism is installed on the four sets of connecting blocks (24). The left and right sides of the four sets of rotating circular plates (16) are connected with sliding holes. The bottom end of the eight sets of connecting shafts (25) passes through the eight sets of sliding holes on the four sets of rotating circular plates (16) and connects to the top end of the four sets of connecting plates (23). The eight sets of connecting shafts (25) are slidably connected to the eight sets of sliding holes on the four sets of rotating circular plates (16). Four sets of top plates (27) are respectively installed on the top end of each pair of corresponding connecting shafts (25). Eight sets of springs (26) are respectively sleeved on the upper part of the eight sets of connecting shafts (25). The bottom end of the eight sets of springs (26) is connected to the top end of the four sets of rotating circular plates (16). The top end of the eight sets of springs (26) is connected to the bottom end of the four sets of top plates (27).

3. The automatic material changing device for a building spraying robot as described in claim 2, characterized in that, The installation mechanism includes four sets of mounting rings (28) and four sets of fixing rings (29). The four sets of mounting rings (28) are respectively installed at the front end of the four sets of connecting blocks (24), and the four sets of fixing rings (29) are respectively installed at the top of the four sets of auxiliary material boxes (4). The four sets of fixing rings (29) are set with the four sets of mounting rings (28).

4. The automatic material changing device for a building spraying robot as described in claim 3, characterized in that, The telescopic mechanism (18) is configured as a servo electric cylinder.

5. The automatic material changing device for a building spraying robot as described in claim 4, characterized in that, It also includes two sets of reinforcing ribs (32), which are installed on the lower inner side of the two sets of L-shaped plates (15).

6. The automatic material changing device for a building spraying robot as described in claim 5, characterized in that, It also includes two sets of L-shaped reinforcing plates (33), which are installed on the left and right sides of the top of the U-shaped frame (11) respectively. The rear ends of the two sets of L-shaped reinforcing plates (33) are connected to the front ends of the two sets of brackets (2) on the front side.

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