A motorcycle exhaust pipe internal lacquering device

By designing equipment including a paint storage tank, paint pump, pressure tank, and pressurized nozzle, the problems of low efficiency and environmental pollution in traditional motorcycle exhaust pipe painting have been solved, achieving uniform painting and environmentally friendly production.

CN224405480UActive Publication Date: 2026-06-26DANYANG DONGJIANG METAL PRODUCTS CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DANYANG DONGJIANG METAL PRODUCTS CO LTD
Filing Date
2025-07-22
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Traditional methods of painting motorcycle exhaust pipes are inefficient, and paint splattering and dripping cause environmental pollution, making it difficult to meet environmentally friendly production requirements.

Method used

A device comprising a paint storage tank, a paint pump, a pressure tank, a pressure controller, and a press-type nozzle was designed. The device achieves uniform paint filling by controlling the pressure inside the pressure tank and recovers dripping paint using a suspension mechanism and a return plate, ensuring the sealing and environmental friendliness of the paint filling process.

Benefits of technology

It achieves uniform paint application to the inner surface of motorcycle exhaust pipes, reducing paint dripping and leakage, protecting the environment, and improving production efficiency and environmental friendliness.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224405480U_ABST
    Figure CN224405480U_ABST
Patent Text Reader

Abstract

The utility model belongs to motorcycle exhaust pipe processing equipment technical field especially is a kind of motorcycle exhaust pipe inner paint filling equipment, pressure tank lower part is equipped with paint outlet pipe, and paint outlet pipe extends to the upper portion of paint storage pool, and the pressurized nozzle for the paint filling of motorcycle exhaust pipe is installed on paint outlet pipe;Paint liquid in the inside of pressure tank is sprayed into the lower end of motorcycle exhaust pipe by paint outlet pipe and pressurized nozzle, when paint liquid in motorcycle exhaust pipe rises and is discharged by upper end, complete the paint filling of the inner surface of motorcycle exhaust pipe, and paint liquid discharged by the upper end of motorcycle exhaust pipe is backflowed to paint storage pool by backflow hopper, after paint filling, motorcycle exhaust pipe is lifted, and the pressure of pressurized nozzle disappears and closes at this time, and the paint filled motorcycle exhaust pipe is hung by suspension mechanism through suspension rod, and the paint liquid in the inside of motorcycle exhaust pipe is backflowed to paint storage pool by the upper surface of backflow plate, solve the problem that paint drops and causes environmental pollution when filling paint in motorcycle exhaust pipe.
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Description

Technical Field

[0001] This utility model belongs to the technical field of motorcycle exhaust pipe processing equipment, specifically relating to a motorcycle exhaust pipe internal painting equipment. Background Technology

[0002] In the motorcycle manufacturing industry, applying paint to the inside of exhaust pipes is a key process to improve their corrosion resistance and service life.

[0003] Traditional methods of painting motorcycle exhaust pipes mostly involve manual hand-held spray guns or simple equipment. Manual spraying is not only inefficient and difficult to ensure the uniformity of the paint layer, but also causes paint to splatter everywhere during the spraying process, resulting in paint waste and serious pollution to the working environment. Simple equipment filling, on the other hand, has the problem of paint dripping during the filling process. After the exhaust pipe is painted, residual paint drips from the exhaust pipe end, which not only dirtys the work area and increases cleaning costs, but also damages the surrounding soil, water sources and other ecological environments in the long run, failing to meet environmental protection production requirements. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a paint-filling device for motorcycle exhaust pipes. The specific technical solution is as follows:

[0005] A device for filling a motorcycle exhaust pipe with paint includes a paint storage tank. A paint pump for drawing paint stored inside the tank is installed on the side of the tank. A pressure tank is installed at the outlet of the pump, and a pressure controller is installed on the top of the pressure tank. The pump is connected to an external power source via the pressure controller. A paint outlet pipe is installed at the bottom of the pressure tank and extends to the top of the tank. A press nozzle for filling the motorcycle exhaust pipe with paint is installed on the outlet pipe. A support plate for supporting the press nozzle is fixed to the top of the tank. A return hopper for the return of paint discharged from the top of the exhaust pipe is provided at the top of the tank. Suspension mechanisms for suspending the exhaust pipe are provided on both sides of the tank.

[0006] The suspension mechanism includes a return plate for the backflow of dripping paint when the exhaust pipe is suspended. A support leg is fixed to the lower surface of the return plate, and a stop bar and a support bar are fixed to the upper surface of the return plate. A suspension rod for suspending the motorcycle exhaust pipe is fixed to the upper part of the stop bar and the support bar, and the end of the suspension rod near the paint reservoir is inclined upward.

[0007] Preferably, the press-type nozzle includes a nozzle fixed on a paint outlet pipe, a press plate movably mounted on the upper end of the nozzle, a flange integrally formed on the outer surface of the nozzle, a limit screw movably mounted in a hole in the flange, the upper end of the limit screw screw being screwed into a screw hole in the lower surface of the press plate, two sealing rings installed in two grooves in the middle of the press plate, annularly distributed nozzles in the upper part of the nozzle, the annularly distributed nozzles being located between the two sealing rings, a spring welded to the upper end of the nozzle, a sealing gasket fixed on the upper surface of the press plate, and a paint outlet in the middle of the press plate and the sealing gasket.

[0008] Preferably, the sealing gasket has a conical structure.

[0009] Preferably, the ring array of limiting screws consists of four screws, and the axis of the limiting screws is parallel to the axis of the nozzle.

[0010] Preferably, the end of the reflux plate away from the paint storage tank is angled upwards.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. A pressure controller installed at the top of the pressure tank allows the pressure controller to detect the internal pressure of the tank and control the start of the paint pump, ensuring that the internal pressure of the tank is maintained at 3-4 kPa. This allows the paint inside the pressure tank to be sprayed into the lower end of the motorcycle exhaust pipe through the paint outlet pipe and the press nozzle when the lower end of the exhaust pipe is pressed. As the paint in the exhaust pipe rises, it is discharged from the top, completing the painting of the inner surface of the motorcycle exhaust pipe. The paint discharged from the top end of the motorcycle exhaust pipe flows back to the paint storage tank through the return hopper. After painting is completed, the motorcycle exhaust pipe is lifted. At this time, the pressure of the press nozzle disappears and it closes. The suspension mechanism suspends the painted motorcycle exhaust pipe through the suspension rod. Excess paint inside the motorcycle exhaust pipe drips onto the upper surface of the return plate and flows back to the paint storage tank, solving the problem of paint dripping from the motorcycle exhaust pipe and causing environmental pollution.

[0013] 2. The press-fit nozzle consists of a spray head, a pressure plate, a flange, limit screws, sealing rings, a nozzle, a spring, a sealing gasket, and a paint outlet. The spray head is movably installed inside the pressure plate and sealed by two sealing rings. The nozzle on the upper part of the spray head is located between the two sealing rings, so that when the pressure plate is subjected to downward pressure, the nozzle slides above the two sealing rings. At this time, the paint inside the spray head enters the pressure plate through the nozzle and is then sprayed into the lower end of the motorcycle exhaust pipe through the paint outlet, realizing paint filling of the motorcycle exhaust pipe. When the pressure of the pressure plate is removed, the spring welded to the upper part of the spray head is used to reset the pressure plate, which facilitates the closing of the press-fit nozzle. The sealing gasket fixed on the upper surface of the pressure plate facilitates the sealing of the lower end of the motorcycle exhaust pipe with the pressure plate, reducing leakage during paint filling of the motorcycle exhaust pipe. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0015] Figure 2 This is a three-dimensional schematic diagram of the present invention.

[0016] Figure 3 This is a schematic diagram of a half-section of the present invention;

[0017] Figure 4 This is a schematic diagram of the press-type nozzle structure in this utility model.

[0018] Reference numerals: 1. Paint storage tank; 2. Paint pump; 3. Pressure tank; 4. Pressure controller; 5. Paint outlet pipe; 6. Pressing nozzle; 61. Nozzle; 62. Pressing plate; 63. Flange; 64. Limiting screw; 65. Sealing ring; 66. Nozzle; 67. Spring; 68. Sealing gasket; 69. Paint outlet nozzle; 7. Support plate; 8. Return hopper; 9. Return plate; 10. Support leg; 11. Stop bar; 12. Support rod; 13. Suspension rod. Detailed Implementation

[0019] The technical solution of this utility model will now be described with reference to the accompanying drawings and embodiments.

[0020] Please see Figure 1-4This embodiment provides the following technical solution: a paint filling device for a motorcycle exhaust pipe, including a paint storage tank 1, a paint pump 2 for pumping paint liquid stored inside the paint storage tank 1 installed on the side of the paint storage tank 1, a pressure tank 3 installed at the paint outlet end of the paint pump 2, a pressure controller 4 installed on the top of the pressure tank 3, the paint pump 2 connected to an external power source through the pressure controller 4, a paint outlet pipe 5 installed at the lower part of the pressure tank 3, and the paint outlet pipe 5 extending to the upper part of the paint storage tank 1, a press nozzle 6 for filling the motorcycle exhaust pipe with paint installed on the paint outlet pipe 5, a support plate 7 for supporting the press nozzle 6 fixed at the upper part of the paint storage tank 1, a return hopper 8 for the return flow of paint liquid discharged from the upper end of the motorcycle exhaust pipe at the upper part of the paint storage tank 1, and a suspension mechanism for suspending the motorcycle exhaust pipe on both sides of the paint storage tank 1.

[0021] The suspension mechanism includes a return plate 9 for the backflow of dripping paint when the exhaust pipe is suspended. A support leg 10 is fixed to the lower surface of the return plate 9. A stop bar 11 and a support rod 12 are fixed to the upper surface of the return plate 9. A suspension rod 13 for suspending the motorcycle exhaust pipe is fixed to the upper part of the stop bar 11 and the support rod 12, and the end of the suspension rod 13 near the paint storage tank 1 is obliquely upward.

[0022] In this embodiment, the pressure controller 4 installed on the upper end of the pressure tank 3 allows the pressure controller 4 to detect the pressure inside the pressure tank 3 and control the start of the paint pump 2, ensuring that the pressure inside the pressure tank 3 is maintained at 3-4 kPa. This facilitates the spraying of paint from inside the pressure tank 3 into the lower end of the motorcycle exhaust pipe through the paint outlet pipe 5 and the spraying nozzle 6 when the lower end of the motorcycle exhaust pipe is pressed. As the paint rises in the motorcycle exhaust pipe, it is discharged from the upper end, completing the painting of the inner surface of the motorcycle exhaust pipe. The paint discharged from the upper end of the motorcycle exhaust pipe flows back to the paint storage tank 1 through the return hopper 8. After the painting is completed, the motorcycle exhaust pipe is lifted, at which point the pressure of the spraying nozzle 6 disappears and closes. The suspension mechanism suspends the painted motorcycle exhaust pipe through the suspension rod 13, and the excess paint inside the motorcycle exhaust pipe drips onto the upper surface of the return plate 9 and flows back to the paint storage tank 1, solving the problem of paint dripping from the motorcycle exhaust pipe and causing environmental pollution.

[0023] Specifically, the press-type nozzle 6 includes a nozzle 61 fixed on the paint outlet pipe 5, a press plate 62 movably mounted on the upper end of the nozzle 61, a flange 63 integrally formed on the outer surface of the nozzle 61, a limit screw 64 movably mounted in the hole of the flange 63, the upper end of the limit screw 64 screwed into the screw hole on the lower surface of the press plate 62, two sealing rings 65 installed in the two grooves in the middle of the press plate 62, annularly distributed nozzles 66 are provided on the upper part of the nozzle 61, and the annularly distributed nozzles 66 are located between the two sealing rings 65, a spring 67 is welded to the upper end of the nozzle 61, a sealing gasket 68 is fixed on the upper surface of the press plate 62, a paint outlet 69 is provided in the middle of the press plate 62 and the sealing gasket 68, the sealing gasket 68 has a conical structure, and there are four limit screws 64 in a ring array, and the axis of the limit screws 64 is parallel to the axis of the nozzle 61.

[0024] In this embodiment, a press-fit nozzle 6 is constructed from a nozzle 61, a pressing plate 62, a flange 63, a limiting screw 64, a sealing ring 65, a nozzle 66, a spring 67, a sealing gasket 68, and a paint outlet 69. The nozzle 61 is movably installed inside the pressing plate 62 and sealed by two sealing rings 65. This allows the nozzle 66, located at the top of the nozzle 61, to slide above the two sealing rings 65 when the pressing plate 62 receives downward pressure. The paint inside the nozzle 61 enters the pressing plate 62 through the nozzle 66, and then is sprayed into the lower end of the motorcycle exhaust pipe through the paint outlet 69, thus filling the motorcycle exhaust pipe with paint. When the spring 67 welded to the upper end of the nozzle 61 is used to reset the pressing plate 62 after the pressure of the pressing plate 62 is removed, it is easy to press the nozzle 6 to close. The sealing gasket 68 fixed on the upper surface of the pressing plate 62 makes it easy for the lower end of the motorcycle exhaust pipe to be sealed with the pressing plate 62 through the sealing gasket 68, reducing leakage when filling the motorcycle exhaust pipe with paint.

[0025] Specifically, the end of the return plate 9 away from the paint storage tank 1 is set at an angle upward, so that the paint dripping from the motorcycle exhaust pipe after being filled with paint can flow back into the paint storage tank 1 through the return plate 9.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for the internal lacquering of a motorcycle exhaust pipe comprising a lacquer reservoir (1), characterized in that: A paint pump (2) for pumping paint liquid stored inside the paint tank (1) is installed on the side of the paint tank (1). A pressure tank (3) is installed at the paint outlet end of the paint pump (2). A pressure controller (4) is installed on the top of the pressure tank (3). The paint pump (2) is connected to an external power source through the pressure controller (4). A paint outlet pipe (5) is installed at the bottom of the pressure tank (3) and extends to the top of the paint tank (1). A press nozzle (6) for filling the exhaust pipe of a motorcycle is installed on the paint outlet pipe (5). A support plate (7) for supporting the press nozzle (6) is fixed on the top of the paint tank (1). A return hopper (8) for the return of paint liquid discharged from the top of the exhaust pipe of a motorcycle is provided on the top of the paint tank (1). A suspension mechanism for suspending the exhaust pipe of a motorcycle is provided on both sides of the paint tank (1). The suspension mechanism includes a return plate (9) for the backflow of dripping paint when the exhaust pipe is suspended. A support leg (10) is fixed on the lower surface of the return plate (9). A stop bar (11) and a support rod (12) are fixed on the upper surface of the return plate (9). A suspension rod (13) for suspending the motorcycle exhaust pipe is fixed on the upper part of the stop bar (11) and the support rod (12). The end of the suspension rod (13) near the paint storage tank (1) is obliquely upward.

2. The motorcycle exhaust pipe internal painting equipment according to claim 1, characterized in that: The press nozzle (6) includes a nozzle (61) fixed on the paint outlet pipe (5), a press plate (62) is movably installed on the upper end of the nozzle (61), a flange (63) is integrally formed on the outer surface of the nozzle (61), a limit screw (64) is movably installed in the hole of the flange (63), the upper end of the limit screw (64) is screwed into the screw hole on the lower surface of the press plate (62), two sealing rings (65) are installed in the two grooves in the middle of the press plate (62), a ring-shaped nozzle (66) is provided on the upper part of the nozzle (61), and the ring-shaped nozzle (66) is located between the two sealing rings (65). A spring (67) is welded to the upper end of the nozzle (61), a sealing gasket (68) is fixed on the upper surface of the press plate (62), and a paint outlet (69) is provided in the middle of the press plate (62) and the sealing gasket (68).

3. The motorcycle exhaust pipe internal paint filling device according to claim 2, characterized in that: The sealing gasket (68) has a conical structure.

4. The motorcycle exhaust pipe internal painting equipment according to claim 2, characterized in that: The limiting screws (64) are arranged in a ring array of four, and the axis of the limiting screws (64) is parallel to the axis of the nozzle (61).

5. The motorcycle exhaust pipe internal paint filling device according to claim 1, characterized in that: The return plate (9) is set at an angle upward at the end away from the paint storage tank (1).