Automatic spraying device for pipe identification

Abstract

The utility model belongs to the technical field of pipeline spraying, and discloses an automatic spraying device for a pipe mark, which comprises a rack and a spraying assembly arranged on the rack, the spraying assembly comprises a character plate arranged on the rack, the first air cylinder is arranged on the rack; the spray gun is arranged on a piston rod of the first air cylinder and is arranged on the back surface of the word plate; the paint can is communicated with the spray gun through a pipeline; the feeding unit is used for feeding the spray gun; the feeding unit comprises an electromagnet, a permanent magnet and a piston, the piston is arranged in the paint can in a sliding mode, the permanent magnet is arranged in the piston, the electromagnet is arranged in the paint can, and the electromagnet is electrified to be mutually exclusive to the permanent magnet; according to the scheme, the first air cylinder drives the spray gun to move along the character plate, so that paint sprayed by the spray gun is sprayed to the surface of the pipe through the hollow area on the character plate, and automatic spraying of the pipe mark is achieved; the device solves the problem of automatically spraying marks on the outer wall of the pipe.

Description

Technical Field

[0001] This solution belongs to the field of pipeline spraying technology, specifically involving an automatic spraying device for pipe marking. Background Technology

[0002] Pipes are widely used as essential basic materials in industrial production and construction, across various fields such as petroleum, chemical, and construction. They come in many varieties, including steel pipes, plastic pipes, and composite pipes, with different materials and specifications playing crucial roles in different application scenarios. To facilitate pipe identification, management, and tracking, markings are typically made on the pipe surface. These markings contain important information such as pipe specifications, material, manufacturer, and production date, helping to quickly and accurately identify pipes during production, transportation, installation, and use, ensuring project quality and safety.

[0003] Current pipe marking methods typically involve manual application. This involves creating lettering stencils, manually attaching them to the pipe's outer wall, and then spraying with paint. This method has several drawbacks. First, manual operation leads to inconsistent paint quality, making it difficult to guarantee the clarity and aesthetics of the markings. Precise control of spraying distance, time, and paint volume is also challenging, easily resulting in paint drips or unclear markings. Second, manual spraying is inefficient and labor-intensive, especially when handling large quantities of pipes, making it unsuitable for industrial production. Furthermore, paint evaporation and diffusion not only pollute the surrounding environment but also pose a potential health threat to operators. Finally, manual spraying results in low paint utilization, leading to material waste and increased production costs. Utility Model Content

[0004] The purpose of this solution is to provide an automatic pipe marking spraying device to automatically spray pipe markings.

[0005] To achieve the above objectives, this solution provides an automatic pipe marking spraying device, including a frame and a spraying assembly mounted on the frame, wherein the spraying assembly includes:

[0006] The character plate is mounted on the frame;

[0007] The first cylinder is mounted on the frame;

[0008] A spray gun, which is mounted on the piston rod of the first cylinder and is located on the back of the letter plate;

[0009] A paint can, which is connected to a spray gun via a pipe;

[0010] A feeding unit is used to feed material to the spray gun.

[0011] The principle and effect of this solution are as follows: By setting hollowed-out lettering on the lettering plate, corresponding information that needs to be marked on the pipe, such as the manufacturer, pipe diameter, etc., the lettering plate is placed on the outer wall of the pipe during spraying. Then, the paint can is connected to the spray gun through a pipe, and the feeding unit supplies paint to the spray gun. The first cylinder drives the spray gun to move along the lettering plate, so that the paint sprayed by the spray gun is sprayed onto the surface of the pipe through the hollowed-out area of ​​the lettering plate, realizing the automatic spraying of pipe markings.

[0012] Furthermore, it also includes a drive assembly mounted on the frame, the drive assembly including a second cylinder and a bracket, the bottom of the bracket being hinged to the frame, the spraying assembly being mounted on the bracket, and the piston rod of the second cylinder being hinged to the bracket.

[0013] The principle and effect of this solution are as follows: the extension and retraction of the piston rod of the second cylinder drives the bracket that is hinged to it to rotate around the hinge point between it and the frame. Since the spraying component is located on the bracket, it moves the letter plate closer to or away from the outer wall of the pipe. When the letter plate is attached to the surface of the pipe and then sprayed, the paint can be accurately sprayed onto the pipe through the hollow area on the letter plate during the spraying process.

[0014] Furthermore, the character plate is hinged to the support, and a torsion spring is provided at the hinge point between the character plate and the frame; the piston rod of the first cylinder extends beyond the length of the character plate; the first cylinder and the second cylinder are electrically connected to a controller.

[0015] The principle and effect of this solution are as follows: By installing a torsion spring at the hinge between the letter plate and the frame, the elastic force of the torsion spring allows the letter plate to automatically reset when no external force is applied. The piston rod of the first cylinder extends beyond the length of the letter plate, ensuring that the spray gun fully covers the entire back of the letter plate during the spraying process. A controller is installed to control the actions of the first and second cylinders.

[0016] Furthermore, the feeding unit is a paint diaphragm pump, the inlet of which is connected to the paint tank via a pipeline, and the outlet of which is connected to the spray gun via a pipeline.

[0017] The principle and effect of this solution are as follows: the paint diaphragm pump changes the volume of the working chamber through the reciprocating motion of the diaphragm, thereby sucking in and discharging paint. Its feed end is connected to the paint tank, and its discharge end is connected to the spray gun, providing a stable and adjustable paint supply to the spray gun.

[0018] Furthermore, the feeding unit includes an electromagnet, a permanent magnet, and a piston. The piston is slidably disposed inside the paint can, the permanent magnet is disposed inside the piston, and the electromagnet is disposed inside the paint can. When the electromagnet is energized, it repels the permanent magnet.

[0019] The principle and effect of this solution are as follows: when the electromagnet is energized, it generates a magnetic field that repels the permanent magnet, which pushes the piston to move at the outlet of the paint can, thereby transporting the paint from the paint can to the spray gun.

[0020] Furthermore, the piston is connected to a spring, and the free end of the spring is fixedly connected to the paint can.

[0021] The principle and effect of this solution are as follows: (1) When the equipment stops or the power is cut off, the power to transport the paint disappears, causing the paint to stop flowing and remain in the pipe connecting the paint tank and the spray gun. This causes the paint to dry in the pipe, resulting in blockage of the spray gun nozzle and the pipe, affecting the spraying quality. Therefore, it is necessary to recover the paint remaining in the pipe. (2) When the paint tank of this solution is working normally, the piston moves and squeezes the paint in the paint tank, thereby stretching the spring. When the equipment stops or the power is cut off, the electromagnet loses power, the permanent magnet loses the repulsive force of the electromagnet, and under the drive of the spring preload, it drives the piston to return to the initial position, thereby increasing the space of the upper chamber of the piston and generating negative pressure, which in turn draws the paint remaining in the pipe into the paint tank, avoiding the problem of paint drying in the pipe and causing blockage of the spray gun nozzle and the pipe, while reducing paint waste.

[0022] Furthermore, it also includes a stirring assembly located inside the paint can. The stirring assembly includes a drive rod, an impeller, and a pin. The drive rod is rotatably connected to a piston. The impeller is coaxially and fixedly connected to the drive rod. A threaded rod is coaxially and fixedly connected to the drive rod. The pin is fixedly located inside the paint can, and the pin is threadedly engaged with the threaded rod.

[0023] The principle and effect of this solution are as follows: Since pigments in paint tend to settle or separate when left to stand, continuous stirring of the paint in the can is necessary to prevent settling. In this solution, the piston's up-and-down movement drives the drive rod, impeller, and threaded rod to move synchronously. When the threaded rod moves upward, the thread engages with the pin, causing the threaded rod to rotate, which in turn drives the drive rod and impeller to rotate, thus stirring the paint. To ensure the threaded rod can rotate along the pin, the spacing between the threads of the threaded rod needs to be relatively large.

[0024] Furthermore, the drive rod is connected to the piston via a rotary joint.

[0025] The principle and effect of this solution are as follows: the drive rod and the piston are connected by a rotary joint, so that the drive rod can rotate simultaneously as the piston moves up and down, thereby driving the impeller to stir the paint.

[0026] Furthermore, the free end of the threaded rod is slidably connected to a sleeve for receiving the threaded rod, and the side wall of the sleeve is fixedly connected to the paint can.

[0027] The principle and effect of this solution are as follows: since the threaded rod keeps moving towards the outlet end of the paint can, the threaded rod can be contained by setting a sleeve.

[0028] Furthermore, a groove is provided inside the paint can, the shape of which matches the thread of the threaded rod, and the threaded rod is slidably connected to the groove.

[0029] The principle and effect of this solution are as follows: the slide is used to provide positioning and guidance for the movement of the drive rod. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the automatic spraying device for pipe marking according to this utility model;

[0031] Figure 2 This is a schematic diagram of the structure of the spraying assembly and the driving assembly of this utility model;

[0032] Figure 3 This is a schematic diagram of the internal structure of the paint can of this utility model.

[0033] The corresponding labels in the attached diagram are named as follows: Frame 1, Spraying assembly 2, Letter plate 21, First cylinder 22, Spray gun 23, Paint can 24, Paint diaphragm pump 25, Electromagnet 26, Permanent magnet 27, Piston 28, Spring 29, Drive assembly 3, Second cylinder 31, Support 32, Stirring assembly 4, Drive rod 41, Impeller 42, Threaded rod 43, Pin 44, Sleeve 45, Pipe 5. Detailed Implementation

[0034] The following will describe the concept and technical effects of this utility model clearly and completely with reference to the embodiments, so as to fully understand the purpose, features and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model.

[0035] Example:

[0036] Please see Figure 1 Two sets of automatic pipe marking spraying devices are symmetrically arranged, with the pipe 5 to be sprayed placed between the two sets of spraying devices, so that the markings are sprayed on both sides of the outer wall of the pipe 5 simultaneously. A support platform is provided under the pipe 5 to support the pipe 5, or a roller bracket with inflatable tires can be used to support and transport the pipe 5.

[0037] Please see Figure 1 and Figure 2The automatic pipe marking spraying device includes a frame 1 and a drive assembly 3. The drive assembly 3 includes a second cylinder 31 and a bracket 32. The bottom of the bracket 32 ​​is hinged to the frame 1, and the piston rod of the second cylinder 31 is hinged to the bracket 32. A spraying assembly 2 is mounted on the bracket 32. The spraying assembly 2 includes a letter plate 21 and a first cylinder 22. The letter plate 21 has hollowed-out markings, such as hollowed-out lettering for the pipe manufacturer and pipe diameter. The letter plate 21 is hinged to the bracket 32, and a torsion spring is provided at the hinge point. The elastic force of the torsion spring is used to spray the letter plate 21 onto the bracket 32. The plate 21 can automatically reset when not subjected to external force. A first cylinder 22 is located on the back of the plate 21, and the piston rod of the first cylinder 22 extends beyond the length of the plate 21. A spray gun 23 is mounted on the end of the piston rod of the first cylinder 22, allowing the piston rod to drive the spray gun 23 to fully cover the back of the plate 21. The spray gun 23 is connected to a paint tank 24 via a pipe. A feeding unit is located between the paint tank 24 and the spray gun 23 to pressurize the paint tank 24, thereby feeding the paint from the paint tank 24 into the spray gun 23. To facilitate control of the movement of the first cylinder 22 and the second cylinder 31, a controller, such as a PLC or STM32 controller, is mounted on the frame 1.

[0038] The specific working principle is as follows: The piston rod of the second cylinder 31 extends and retracts, driving the bracket 32, which is hinged to it, to rotate around the hinge point between the bracket and the frame. Since the letter plate 21 and the spray gun 23 are both mounted on the bracket 32, the letter plate 21 is moved closer to or away from the outer wall of the pipe 5. When the letter plate 21 is attached to the surface of the pipe 5, the feeding unit feeds the paint from the paint can 24 into the spray gun 23. The first cylinder 22 drives the spray gun 23 to move along the length of the letter plate 21, so that the paint sprayed by the spray gun 23 is sprayed onto the surface of the pipe 5 through the hollow area on the letter plate 21, thereby realizing the automatic spraying of the pipe 5 marking.

[0039] Please see Figure 3 The feeding unit uses a paint diaphragm pump 25. The inlet of the paint diaphragm pump 25 is connected to the paint tank 24 through a pipeline, and the outlet is connected to the spray gun 23 through a pipeline. This is existing technology. The paint diaphragm pump 25 changes the volume of the working chamber by the reciprocating motion of the diaphragm, thereby sucking in and discharging paint. Its inlet is connected to the paint tank 24, and its outlet is connected to the spray gun 23, providing a stable and adjustable paint supply to the spray gun 23.

[0040] More preferably, the feeding unit includes an electromagnet 26, a permanent magnet 27, and a piston 28. The piston 28 is slidably disposed inside the paint can 24, dividing the paint can 24 into upper and lower chambers. The upper chamber of the piston 28 is used to store paint, and the lower chamber is hollow. The permanent magnet 27 is disposed inside the piston 28, and the electromagnet 26 is disposed in the lower chamber inside the paint can 24. When the electromagnet 26 is energized, it repels the permanent magnet 27, thereby pushing the piston 28 to move upward and compress the upper chamber, thereby reducing the space of the chamber and squeezing the paint out of the paint can 24, which is then fed into the spray gun 23 through a pipe.

[0041] Please continue reading. Figure 3 The piston 28 is connected to a spring 29, and the free end of the spring 29 is fixedly connected to the bottom of the paint can 24. It also includes a stirring assembly 4 located inside the paint can 24. The stirring assembly 4 includes a drive rod 41, an impeller 42, and a pin 44. The drive rod 41 is connected to the piston 28 via a rotary joint. The impeller 42 is coaxially fixedly connected to the drive rod 41. A groove (not shown in the figure) is provided inside the paint can 24. The shape of the groove matches the shape of the threaded rod 43. The drive rod 41 is slidably connected to the groove, providing positioning and guidance for the movement of the drive rod 41. The threaded rod 43 is coaxially fixedly connected to the drive rod 41. The pin 44 is fixedly located inside the paint can 24, and the pin 44 is threadedly engaged with the threaded rod 43. To allow the threaded rod 43 to rotate along the pin 44, the spacing between the threads of the threaded rod 43 needs to be relatively large. A sleeve 45 for receiving the threaded rod 43 is slidably connected to the free end of the threaded rod 43. The side wall of the sleeve 45 is fixedly connected to the paint can 24.

[0042] Working principle: During normal operation, the piston 28 moves and compresses the chamber above the paint tank 24, stretching the spring 29. When the equipment stops or is powered off, the electromagnet 26 loses power, and the permanent magnet 27 loses the repulsive force of the electromagnet 26. Under the preload of the spring 29, the piston 28 is driven back to its initial position, increasing the space in the chamber above the piston 28 and creating negative pressure. This draws residual paint from the pipe into the paint tank 24, preventing paint from drying and causing blockages in the spray gun 23 and the pipe, while also reducing paint waste. Simultaneously, as the piston 28 moves up and down, it drives the drive rod 41, impeller 42, and threaded rod 43 to move synchronously. When the threaded rod 43 moves upward, the thread engages with the pin 44, causing the threaded rod 43 to rotate. This, in turn, drives the drive rod 41 and impeller 42 to rotate, thus agitating the paint and preventing sedimentation.

[0043] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A device for automatic spraying of pipe marking, comprising a frame (1) and a spraying assembly (2) arranged on the frame (1), characterized in that, The spraying assembly (2) comprises: a character plate (21) arranged on the frame (1); a first cylinder (22) arranged on the frame (1); a spray gun (23) arranged on the piston rod of the first cylinder (22) and arranged on the back of the character plate (21); a paint tank (24) communicated with the spray gun (23) through a pipeline; a feeding unit for feeding the spray gun (23).

2. The pipe marking automatic spray apparatus of claim 1, wherein: Further comprising a driving assembly (3) arranged on the frame (1), the driving assembly (3) comprises a second cylinder (31) and a bracket (32), the bottom of the bracket (32) is hinged to the frame (1), the spraying assembly (2) is arranged on the bracket (32), and the piston rod of the second cylinder (31) is hinged to the bracket (32).

3. The pipe marking automatic spray apparatus of claim 1, wherein: The character plate (21) is hinged to the bracket (32), a torsion spring is arranged at the hinge of the character plate (21) and the frame (1); the piston rod of the first cylinder (22) is longer than the length of the character plate (21); and the first cylinder (22) and the second cylinder (31) are electrically connected with a controller.

4. The pipe marking automatic spray apparatus of claim 1, wherein: The feeding unit is a paint diaphragm pump (25), the feeding end of the paint diaphragm pump (25) is communicated with the paint tank (24) through a pipeline, and the discharging end is communicated with the spray gun (23) through a pipeline.

5. The pipe marking automatic spray apparatus of claim 1, wherein: The feeding unit comprises an electromagnet (26), a permanent magnet (27) and a piston (28), the piston (28) is slidingly arranged in the paint tank (24), the permanent magnet (27) is arranged in the piston (28), the electromagnet (26) is arranged in the paint tank (24), and the electromagnet (26) is electrified to repel the permanent magnet (27).

6. The pipe marking automatic spray apparatus of claim 1, wherein: The piston (28) is connected with a spring (29), and the free end of the spring (29) is fixedly connected with the paint tank (24).

7. The pipe marking automatic spray apparatus of claim 1, wherein: Further comprising a stirring assembly (4) arranged in the paint tank (24), the stirring assembly (4) comprises a driving rod (41), an impeller (42) and a plug (44), the driving rod (41) is rotationally connected with the piston (28), the impeller (42) is coaxially fixedly connected with the driving rod (41), the driving rod (41) is coaxially fixedly connected with a threaded rod (43), the plug (44) is fixedly arranged in the paint tank (24), and the plug (44) is arranged in threaded cooperation with the threaded rod (43).

8. The pipe marking automatic spray apparatus of claim 7, wherein: The driving rod (41) is connected with the piston (28) through a rotary joint.

9. The pipe marking automatic spray apparatus of claim 7, wherein: The free end of the threaded rod (43) is slidingly connected with a sleeve (45) for accommodating the threaded rod (43), and the side wall of the sleeve (45) is fixedly connected with the paint tank (24).

10. The pipe marking automatic spray apparatus of claim 9, wherein: A sliding groove is arranged in the paint tank (24), the shape of the sliding groove is matched with the thread of the threaded rod (43), and the threaded rod (43) is slidingly connected with the sliding groove.

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