Spraying robot for workpiece spraying operation

Abstract

The utility model relates to the technical field of spraying robots. The spraying robot comprises a six-axis mechanical arm, a paint supply device, an air spraying gun and a material bearing assembly. The paint supply device comprises a paint bucket assembly and a conveying assembly. The paint bucket assembly is used for containing paint and communicates with the air spray gun through a paint pipeline. The conveying assembly is arranged on the paint pipeline and used for conveying paint in the paint bucket assembly to the air spray gun through the paint pipeline. The material bearing assembly is used for placing workpieces. The air spray gun is provided with a nozzle, and paint is sprayed out through the nozzle. The air spray gun is arranged on the six-axis mechanical arm, and a nozzle is located at the tail end of the six-axis mechanical arm, so that the six-axis mechanical arm can drive the nozzle to change the position and angle, and paint spraying operation is conducted on the workpiece on the material bearing assembly. The spraying device is high in spraying efficiency and spraying quality, good in safety and beneficial to health of workers.

Description

Technical Field

[0001] This utility model relates to the technical field of spraying robots, and in particular to a spraying robot for workpiece spraying operations. Background Technology

[0002] Surface painting is an important surface treatment technology that plays a vital role in protecting workpieces, enhancing their appearance, achieving special functions, and improving production efficiency. Painting protects metal, hardware, steel, and iron workpieces from corrosion by water, rain, wind, and other media, extending their service life. Through painting, a hard paint film forms on the workpiece surface, increasing its hardness and scratch resistance, thereby improving its durability. Painting can also cover surface defects, making the workpiece more aesthetically pleasing.

[0003] In the existing technology, the spraying process of workpieces mainly relies on manual spraying: the workpiece is placed on a stable working platform, then the surface of the workpiece is polished smooth with sandpaper or a sanding machine, and finally the paint is evenly sprayed onto the surface of the workpiece by holding the spray gun at a certain angle.

[0004] When using the above method for batch spraying, the spraying efficiency is low and the spraying quality is inconsistent, which needs to be improved. Utility Model Content

[0005] In order to improve the efficiency and effect of workpiece spraying, this utility model provides a spraying robot for workpiece spraying operations.

[0006] The painting robot for workpiece spraying provided by this utility model adopts the following technical solution:

[0007] A painting robot for workpiece spraying includes a six-axis robotic arm, a paint supply device, an air spray gun, and a material receiving assembly. The paint supply device includes a paint bucket assembly and a conveying assembly. The paint bucket assembly holds paint and is connected to the air spray gun via a paint pipeline. The conveying assembly is located on the paint pipeline and transports the paint from the paint bucket assembly to the air spray gun. The material receiving assembly holds the workpiece. The air spray gun has a nozzle through which paint is sprayed. The air spray gun is mounted on the six-axis robotic arm, with the nozzle located at the end of the robotic arm, allowing the robotic arm to move the nozzle to change position and angle, thus performing painting operations on the workpiece on the material receiving assembly.

[0008] Optionally, the paint bucket assembly includes a cylinder, a cover plate, and a lifting component; the cylinder is a hollow container with an open top for holding paint; the cover plate is fastened to the upper side of the cylinder; the lifting component is disposed on the cylinder and is throttle-connected to the cover plate, enabling it to drive the cover plate to open or close the upper side of the cylinder.

[0009] Optionally, the paint supply device includes a diaphragm flow pump or a gear pump.

[0010] Optionally, the material-bearing assembly includes a base, a rotating sprayer, and a driving component; the rotating sprayer is rotatably mounted on the base and can rotate around its own vertical axis; the upper side of the rotating sprayer is used to place the workpiece; the driving component is mounted on the base and is connected to the rotating sprayer for transmission to drive the rotating sprayer to rotate.

[0011] Optionally, the drive component includes a single-phase motor.

[0012] Optionally, it also includes an isolation enclosure; the isolation enclosure includes a body and a sealing door; the body encloses the six-axis robotic arm, the paint supply device, the air spray gun, and the material receiving assembly; the sealing door is disposed on the body for closing the body when the air spray gun is in operation.

[0013] Optionally, a control component is also included; the control component includes a PLC and a frequency converter; the PLC is communicatively connected to the six-axis robotic arm and is used to control the motion trajectory of the six-axis robotic arm; the PLC is communicatively connected to the rotary spray table through the frequency converter and is used to control the rotation of the rotary spray table.

[0014] Optionally, the control component further includes an electromagnetic proportional valve; the electromagnetic proportional valve is communicatively connected to the PLC; the electromagnetic proportional valve is disposed inside the air spray gun, located before the nozzle, and connected between the air source of the air spray gun and the nozzle; the electromagnetic proportional valve is used to adjust the pressure at the nozzle according to the control of the PLC, so as to adjust the fan shape, atomization degree and flow rate of the spray from the nozzle.

[0015] As described above, the spraying robot for workpiece spraying operations of this utility model has at least the following beneficial effects:

[0016] Compared with existing technologies, this new painting robot uses a six-axis robotic arm to replace human hands, enabling efficient spraying of workpiece surfaces and reducing the labor intensity of workers. By controlling the six-axis robot's movements, the rotating spray table's motion, and the fan shape, atomization, and flow rate of the air spray gun nozzles, the robot ensures that the workpiece surface is fully covered with paint, resulting in high-quality spraying. Furthermore, the inclusion of an isolation hood contributes to the health and safety of workers. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a spraying robot used for workpiece spraying operations.

[0018] Figure 2 This is a schematic diagram illustrating the structure of the paint supply device.

[0019] Figure 3 It is a schematic diagram used to illustrate the connection relationship between the control components, the six-axis robotic arm, and the material-bearing components.

[0020] Reference numerals: 1. Six-axis robotic arm; 11. Air spray gun; 2. Cylinder; 3. Cover plate; 4. Lifting component; 5. Conveying assembly; 51. Paint pipeline; 6. Base; 61. Support leg; 7. Rotary spray table; 8. Cover; 9. Sealing door; 10. Control component. Detailed Implementation

[0021] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. It should also be understood that the terminology used in the embodiments of this utility model is for describing specific implementation schemes and not for limiting the scope of protection of this utility model. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or according to the conditions recommended by the respective manufacturers.

[0022] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of implementation of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this utility model, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this utility model.

[0023] Please refer to Figure 1-3 This utility model discloses a painting robot for workpiece spraying operations, comprising a six-axis robotic arm 1, a paint supply device, an air spray gun 11, and a material receiving assembly. The paint supply device includes a paint bucket assembly and a conveying assembly 5. The paint bucket assembly holds paint and is connected to the air spray gun 11 via a paint pipe 51. The conveying assembly 5 is mounted on the paint pipe 51 and conveys the paint from the paint bucket assembly to the air spray gun 11 via the paint pipe 51. The material receiving assembly holds the workpiece. The air spray gun 11 has a nozzle through which paint is sprayed. The air spray gun 11 is mounted on the six-axis robotic arm 1, with the nozzle located at the end of the six-axis robotic arm 1, allowing the six-axis robotic arm 1 to move the nozzle to change position and angle, thus performing painting operations on the workpiece on the material receiving assembly.

[0024] Specifically, the six-axis robotic arm 1 has six joints, allowing it to rotate around six different axes. The six axes of the six-axis robotic arm 1 are responsible for different rotational and bending movements, thus enabling it to mimic a human arm to drive an air spray gun 11 to perform spraying operations on the surface of a workpiece, which helps to improve spraying efficiency and spraying quality.

[0025] The air spray gun 11 is connected to a compressed air source, and the compressed air sprays out the paint supplied to it. Due to the pressure of the compressed air, the paint is sprayed out in a fan shape and atomized. The air spray gun 11 includes suction-type spray guns, gravity-type spray guns, and pressure-fed spray guns. Since suction-type and gravity-type spray guns are not suitable for non-continuous spraying operations, in this embodiment, the air spray gun 11 adopts a pressure-fed spray gun. That is, air supplies paint through the paint tank assembly and the conveying assembly 5, thereby enabling continuous large-area spraying.

[0026] More specifically, the paint bucket assembly includes a cylinder 2, a cover plate 3, and a lifting component 4. The cylinder 2 is a hollow container with an open top, used to hold paint. The cover plate 3 is fastened to the upper side of the cylinder 2. The lifting component 4 is mounted on the cylinder 2 and is throttle-connected to the cover plate 3, enabling it to drive the cover plate 3 to open or close the upper side of the cylinder 2.

[0027] In this embodiment, the cylinder 2 is cylindrical. Correspondingly, the cover plate 3 is a circular plate with a diameter larger than that of the cylinder 2. A portion of the edge of the cover plate 3 extends downward to form a connecting part. The portion of the edge of the cover plate 3 opposite to the connecting part along the diametrical direction is hinged to the cylinder 2. The lifting component 4 is a cylinder. The cylinder is located directly below the connecting part, and the cylinder body is fixedly connected to the outer wall of the cylinder 2. The piston rod extends and retracts vertically. The end of the cylinder piston rod is fixedly connected to the lower side of the connecting part. Therefore, the lifting and lowering of the cylinder piston rod can drive the cover plate 3 to open or close the upper side of the cylinder 2. By changing the stroke of the cylinder piston rod, the maximum degree to which the cover plate 3 can be opened can be changed.

[0028] In another embodiment of this utility model, the cylinder 2 can be rectangular, bottle-shaped, etc., and correspondingly, the cover plate 3 can be square, circular, etc. Two opposite parts of the cover plate 3 extend outwards along the diameter direction to form ear plates. A lifting component 4 is installed below each ear plate on the side of the cylinder 2. Both lifting components 4 are cylinders. The two cylinders are installed at the same height and with the same stroke. The ends of the piston rods of the two cylinders are respectively connected to the ear plates above them. Therefore, when the piston rods of the two cylinders extend and retract synchronously, the upper side of the cylinder 2 can be opened or closed.

[0029] The paint supply device includes a diaphragm flow pump or a gear pump. Both diaphragm flow pumps and gear pumps can be used for high-viscosity liquids such as paint. In this embodiment, the paint supply device uses a diaphragm flow pump. By using a diaphragm flow pump to deliver paint, it offers advantages such as simple structure, easy maintenance, and low leakage risk due to the absence of rotating parts and shaft seals. Therefore, the diaphragm flow pump can be easily installed on the paint pipeline 51 to transport the paint. Using a diaphragm flow pump as the paint supply device helps improve the efficiency of the painting operation and enhances the reliability of the painting robot of this invention.

[0030] Please continue to refer to Figure 1 , 2 The material-bearing assembly includes a base 6, a rotating spray station 7, and a driving component (not shown in the figure). The rotating spray station 7 is rotatably mounted on the base 6 and can rotate about its own vertical axis. The upper side of the rotating spray station 7 is used to place the workpiece. The driving component is mounted on the base 6 and is connected to the rotating spray station 7 for transmission to drive the rotating spray station 7 to rotate.

[0031] In a preferred embodiment of this invention, the base 6 is rectangular. The rotary sprayer 7 is rectangular, with its axis of rotation being a vertical axis passing through its center. A support leg 61 is installed at each of the four corners of the base 6. The height of each support leg 61 is adjustable, thereby allowing the height of the rotary sprayer 7 to be adjusted, making the spraying robot of this invention suitable for spraying more types of workpieces.

[0032] The driving component can be various types of motors, such as stepper motors and servo motors. In this embodiment, a single-phase motor is used. The housing of the single-phase motor is centrally located in the base 6, with the output shaft vertically positioned. The upper end of the output shaft is connected to the bottom of the rotary spray table 7, and the axis of the output shaft passes through the center of the rotary spray table 7. Single-phase motors have the advantages of simple structure, low cost, small size, and high reliability. Therefore, by using a single-phase motor as the driving component, the rotary spray table 7 can rotate stably for a long time, ensuring complete coating of the workpiece surface, which helps to improve the coating efficiency and coating quality of the coating robot of this invention.

[0033] During spraying operations, the paint is atomized before being sprayed onto the workpiece surface, and the resulting oil mist is harmful to the health of workers. To avoid harm to workers from the oil mist, the spraying robot of this invention also includes an isolation cover. The isolation cover includes a cover body 8 and a sealing door 9. The cover body 8 encloses the six-axis robotic arm 1, the paint supply device, the air spray gun 11, and the material receiving assembly. The shape and size of the cover body 8 are set according to the actual operation needs, and sufficient space is left inside for the machine housing. The sealing door 9 is installed on the cover body 8 and is used to close the cover body 8 when the air spray gun 11 is working. The sealing door 9 is hinged to the cover body 8. In some other embodiments of this invention, the sealing door 9 can also be installed on the cover body 8 in the form of a sliding door via a track.

[0034] During the spraying operation, the sealing door 9 remains closed. After the spraying operation is completed and the oil mist inside the cover 8 settles, the sealing door 9 is opened, allowing the operator to change the workpiece on the rotary spray table 7.

[0035] Please refer to Figure 3 To further improve the automation level and painting efficiency of the painting robot of this invention, the painting robot also includes a control component 10. The control component 10 includes a PLC (Programmable Logic Controller), a frequency converter, and an electromagnetic proportional valve. The PLC is communicatively connected to the six-axis robotic arm 1 and is used to control the motion trajectory of the six-axis robotic arm. The PLC is also communicatively connected to the rotary spray table 7 via the frequency converter and is used to control the rotation of the rotary spray table 7. In practical applications, the PLC can be integrated into the control cabinet.

[0036] The electromagnetic proportional valve converts input electrical signals into force or displacement, thereby enabling continuous flow control. The electromagnetic proportional valve communicates with a PLC, allowing it to receive electrical signals from the PLC and control the flow rate within it. This, in turn, adjusts the pressure at the nozzle, thereby regulating the fan shape, atomization, and flow rate of the spray. The electromagnetic proportional valve is located inside the air spray gun 11, before the nozzle, and connected between the air source and the nozzle of the air spray gun 11.

[0037] Through the aforementioned control component 10 and appropriate software programming, the movements of the six-axis robot, the movements of the rotating sprayer 7, and the fan shape, atomization degree, and flow rate of the air spray gun 11 can be automatically controlled, further improving the spraying efficiency and spraying quality of the spraying robot of this utility model.

[0038] In summary, compared with existing technologies, the painting robot of this invention, by using a six-axis robotic arm 1 to replace human hands, can efficiently perform painting operations on the surface of workpieces, reducing the labor intensity of workers. The control component 10 controls the movements of the six-axis robot, the rotating spray table 7, and the fan shape, atomization, and flow rate of the air spray gun 11, ensuring that the workpiece surface is fully covered with paint and achieving high painting quality. Furthermore, the inclusion of an isolation shield also benefits the health and safety of workers.

[0039] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A painting robot for workpiece spraying operations, characterized in that: It includes a six-axis robotic arm (1), a paint supply device, an air spray gun (11), and a material-bearing assembly; among which, The paint supply device includes a paint bucket assembly and a conveying assembly (5); The paint bucket assembly is used to hold paint and is connected to the air spray gun (11) through the paint pipeline (51); The conveying assembly (5) is disposed on the paint pipeline (51) and is used to convey the paint in the paint bucket assembly to the air spray gun (11) through the paint pipeline (51). The material-supporting assembly is used to place the workpiece; The air spray gun (11) has a nozzle through which paint is sprayed out; the air spray gun (11) is mounted on the six-axis robotic arm (1), and the nozzle is located at the end of the six-axis robotic arm (1), so that the six-axis robotic arm (1) can drive the nozzle to change position and angle to perform painting operations on the workpiece on the material-bearing assembly.

2. The spraying robot for workpiece spraying operation according to claim 1, characterized in that: The paint bucket assembly includes a cylinder (2), a cover plate (3), and a lifting component (4); The cylinder (2) is a hollow container with an open top, used to hold paint. The cover plate (3) is fastened to the upper side of the cylinder (2); The lifting component (4) is mounted on the cylinder (2) and is connected to the cover plate (3) in a transmission manner, so that it can drive the cover plate (3) to open or close the upper side of the cylinder (2).

3. The spraying robot for workpiece spraying operation according to claim 1, characterized in that: The paint supply device includes a diaphragm flow pump or a gear pump.

4. The spraying robot for workpiece spraying operation according to claim 1, characterized in that: The material-bearing assembly includes a base (6), a rotating spray table (7), and a drive component; The rotary sprayer (7) is rotatably mounted on the base (6) and can rotate around its own vertical axis; the upper side of the rotary sprayer (7) is used to place the workpiece. The driving component is mounted on the base (6) and is connected to the rotating spray table (7) to drive the rotating spray table (7) to rotate.

5. The spraying robot for workpiece spraying operation according to claim 4, characterized in that, The drive component includes a single-phase motor.

6. The spraying robot for workpiece spraying operation according to claim 5, characterized in that, It also includes isolation shields; The isolation enclosure includes a enclosure body (8) and a sealing door (9); The enclosure (8) covers the six-axis robotic arm (1), the paint supply device, the air spray gun (11) and the material support assembly. The sealing door (9) is provided on the cover (8) for closing the cover (8) when the air spray gun (11) is working.

7. The spraying robot for workpiece spraying operation according to claim 4, characterized in that, It also includes a control component (10); The control component (10) includes a PLC and a frequency converter; The PLC is communicatively connected to the six-axis robotic arm (1) and is used to control the motion trajectory of the six-axis robotic arm; The PLC is connected to the rotary spray table (7) via the frequency converter and is used to control the rotation of the rotary spray table (7).

8. The spraying robot for workpiece spraying operation according to claim 7, characterized in that, The control component (10) also includes an electromagnetic proportional valve; the electromagnetic proportional valve is communicatively connected to the PLC; The electromagnetic proportional valve is disposed inside the air spray gun (11), located before the nozzle, and connected between the air source of the air spray gun (11) and the nozzle. The electromagnetic proportional valve is used to adjust the pressure at the nozzle according to the control of the PLC, so as to adjust the fan shape, atomization degree and flow rate of the spray from the nozzle.

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