Automatic coating device for multi-layer unequal-thickness paint

Abstract

The invention belongs to the technical field of production, and particularly relates to an automatic coating device for multi-layer unequal-thickness paint. A fixing plate is fixed to a paint inlet pipe, a paint guide pipe is fixed to the back of the fixing plate and connected to a paint outlet pipe, the paint outlet pipe is sleeved with the paint guide pipe, the interior of the paint outlet pipe is sleeved with a rotating rod, the middle of the rotating rod is sleeved with a bearing, the two sides of the rotating rod are fixed through paint seals, and the outermost portion of the paint outlet pipe is sleeved with a rolling brush; the lead screw is connected with the roller fixing frame on the lower portion, the motor B is fixed to the fixing plate and connected with the roller fixing frame through the rotating rod and the rolling disc, and the endoscope and the light source are fixed to the fixing plate. Automatic coating of multiple layers of coatings can be achieved, and the probability that during manual coating operation in a closed space, the corrosion and toxic environment of the coating possibly causes permanent harm to the health of personnel is greatly reduced, and the safety risk of internal operation of a suspended pipeline is greatly reduced.

Description

Technical Field

[0001] This invention belongs to the field of production technology, and specifically relates to an automatic coating device for multi-layer non-uniform thickness coatings. Background Technology

[0002] Before installation, the inner walls of nuclear power plant circulating water pipelines were coated with an anti-corrosion coating. After years of use, this coating has failed, losing its effective corrosion protection. Since circulating water pipelines are part of the entire lifecycle of a nuclear power plant and cannot be replaced during its operation, recoating is necessary to ensure the safe operation of this critical pipeline. However, due to the length and large area of ​​the pipelines, the thickness and hardness of the coating, conventional manual coating methods are inefficient, require scaffolding, generate significant amounts of toxic and harmful dust, require substantial manpower, and have long work cycles. Furthermore, construction in confined spaces poses high safety risks. Therefore, there is an urgent need for an automated coating technology for the inner walls of circulating water pipelines to address the problems of low efficiency, toxic and harmful dust, and high safety risks, while simultaneously reducing the work cycle. Summary of the Invention

[0003] The purpose of this invention is to provide an automatic coating device for multi-layer non-uniform thickness coatings, which improves work efficiency, reduces work risks, reduces work-related health damage to personnel, and stably and safely completes the required operations.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] An automatic coating device for multi-layer non-uniform thickness coatings includes a fixed plate and a paint inlet pipe. A paint guide pipe connected to the paint outlet pipe is fixed to the back of the fixed plate. The paint guide pipe is sleeved on the paint outlet pipe. The inside of the paint outlet pipe is sleeved on a rotating rod, and the two sides are fixed by paint seals. A roller brush is sleeved on the outermost side, and the two ends of the roller brush are fixed by paint seals. Motor A is fixed to the fixed plate and connected to a lead screw. The lead screw is connected to a lower roller fixing frame. Motor B is fixed to the fixed plate and connected to the roller and roller fixing frame through a rotating rod. An endoscope and a light source are fixed to the fixed plate.

[0006] The roller holder is equipped with a holder plug for connecting to an external robot.

[0007] The fixing plate is made of 1023 carbon steel plate.

[0008] The amount of paint flowing from the paint box into the paint guide tube is controlled by air pressure, which in turn controls the quality of paint flowing into the roller brush and the paint thickness of different roller brushes.

[0009] The endoscope provides real-time feedback on the coating process quality to the host computer for monitoring.

[0010] The beneficial effects achieved by this invention are as follows:

[0011] This invention enables automated multi-layer coating, significantly reducing the potential permanent health hazards caused by the corrosive and toxic environment of coatings during manual coating operations in confined spaces, as well as the safety risks associated with working inside suspended pipelines. It offers high efficiency, high stability, high safety performance, reliability, and low cost. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the automatic coating device of the present invention;

[0013] Figure 2 This is a front view of the automatic coating device of the present invention;

[0014] Figure 3 This is a side view of the automatic coating device of the present invention;

[0015] Figure 4 This is a top view of the automatic coating device of the present invention;

[0016] Figure 5 This is a cross-sectional view of the roller of the automatic coating device of the present invention;

[0017] 1. Fixing plate, 2. Motor A, 3. Lead screw, 4. Motor B, 5. Paint inlet pipe, 6. Paint outlet pipe, 7. Paint guide pipe, 8. Paint seal cap, 9. Roller brush, 10. Roller disc, 11. Paint seal, 12. Roller fixing frame, 13. Rotating rod (same rod as the paint outlet pipe), 14. Endoscope, 15. Light source, 16. Fixing frame plug. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0019] This invention is applicable to situations where the working environment is complex, corrosive, toxic, or has excessively high internal space, making manual operation difficult. Surface corrosion and toxicity can cause permanent harm to human health, as well as dark, enclosed internal environments. Robots equipped with painting devices are needed to enter and perform automated painting work.

[0020] An automatic coating device for multi-layer non-uniform thickness coatings includes: a fixed plate 1, a motor A2, a lead screw 3, a motor B4, a paint inlet pipe 5, a paint outlet pipe 6, a paint guide pipe 7, a paint seal 8, a roller brush 9, a roller disc 10, a paint seal 11, a roller fixing frame 12, a rotating rod 13, an endoscope 14, a light source 15, and a fixing frame plug 16. The paint guide pipe 7 is fixed to the back of the fixed plate 1 and connected to the paint outlet pipe 6. The paint guide pipe 7 is fitted onto the paint outlet pipe 6 and fixed on both sides by the paint seal 11. The roller brush 9 is fitted onto the outermost part and fixed by the paint seal 8. The motor A2 is connected to the lead screw 3. The fixed plate 1 is connected to the roller disc 10 and the roller fixing frame 12 via the rotating rod 13. The motor B4 is fixed to the fixed plate 1 and connected to the roller disc 10 and the roller fixing frame 12 via the rotating rod 13. The endoscope 14 and the light source 15 are respectively fixed to the fixed plate 1. The fixing frame plug 16 is used to connect to an external robot, forming a complete coating device. The fixed plate 1 and the paint inlet pipe 5 are fixed together to form a paint supply system. The paint inlet pipe 5 is installed on the fixed plate 1 and is made of 1023 carbon steel plate, which can provide stable support. The paint outlet pipe 6 is internally sleeved on the rotating rod 13 and the two are interlocked by bearings in the middle, which can make the rotation process smooth. The paint outlet pipe 6 is externally sleeved on the paint guide pipe 7, which can evenly discharge paint to the required position of the whole pipe.

[0021] Motor B4 is fixed to the mounting plate 1 and connected to the roller 10 via the rotating rod 13 to control the application of four optional roller brushes. The paint guide tube 7 is secured at both ends with paint seals 11 to prevent paint leakage. Roller brushes 9 are fitted onto the outermost part of the tube, and their ends are fixed by paint seals 8, ensuring even application to the desired wall surface. The roller brush mechanism consists of four identical sets of roller brushes, allowing for the application of four different types of paint to complete the anti-corrosion work. Motor A2 is fixed to the mounting plate 1, forming a single unit. Motor A2 is connected to the lower lead screw 3, providing power for the rise and fall of the roller brush; lead screw 3 is connected to the lower roller fixing frame 12, completing the rise and fall of the entire roller assembly, which can save space in a large area; motor B4 is fixed to the roller fixing frame 12 and provides power to the entire roller system through the rotating rod 13, providing power for the coating of different paint cans; the amount of paint flowing from the paint box into the paint guide tube 7 is controlled by air pressure, controlling the quality of paint flowing into the roller brush 9, and controlling the paint thickness of different roller brushes; light source 15 is fixed on the fixing plate 1, providing working safety in dark working environments; endoscope 14 is fixed on the fixing plate 1, which can feed back the coating work quality to the host computer in real time for real-time monitoring; fixing frame plug 16 is used for connection with external robots, facilitating assembly with robots; before coating work, the stroke needs to be raised to the highest level before the lead screw 3 starts working to prevent the roller brush 9 from interfering with the tube wall;

[0022] After connecting the painting device to the robot body via the mounting bracket plug 16, a professional operator vents the paint into the spraying device. The paint is then conveyed through the paint inlet pipe 5 and exited through the paint pipe 6, where it is evenly sprayed out via the paint guide pipe 7 and applied to the desired wall surface using roller brushes. The device's motor, connected to a lead screw, controls the raising and lowering of the four rollers, saving considerable workspace.

Claims

1. An automatic coating device for multi-layer non-uniform thickness coatings, characterized in that: The fixed plate is fixed to the paint inlet pipe. The paint guide pipe is fixed to the back of the fixed plate and connected to the paint outlet pipe. The paint guide pipe is sleeved on the paint outlet pipe. The inside of the paint outlet pipe is sleeved on the rotating rod and the middle is interlocked with bearings. The two sides are fixed by paint seals. The outermost part is covered with a roller brush. The two ends of the roller brush are fixed by the paint seal cover. Motor A is fixed to the fixed plate. Motor A is connected to the lead screw. The lead screw is connected to the lower roller fixing frame. Motor B is fixed on the fixed plate and connected to the roller and roller fixing frame through the rotating rod. The endoscope and the light source are fixed on the fixed plate respectively.

2. The automatic coating device for multi-layer non-uniform thickness coatings according to claim 1, characterized in that: The roller holder is equipped with a holder plug for connecting to an external robot.

3. The automatic coating device for multi-layer non-uniform thickness coatings according to claim 1, characterized in that: The fixing plate is made of 1023 carbon steel plate.

4. The automatic coating device for multi-layer non-uniform thickness coatings according to claim 1, characterized in that: The amount of paint flowing from the paint box into the paint guide tube is controlled by air pressure, which in turn controls the quality of paint flowing into the roller brush and the paint thickness of different roller brushes.

5. The automatic coating device for multi-layer non-uniform thickness coatings according to claim 1, characterized in that: The endoscope provides real-time feedback on the coating process quality to the host computer for monitoring.

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