Spraying rotating support for anti-corrosion coating of silencer tail pipe
By designing a rotating support for spraying the anti-corrosion coating on the muffler tailpipe with a drive and positioning mechanism, the problems of low spraying efficiency and uneven coating in the existing technology are solved, and uniform spraying and high-efficiency automation of the tailpipe surface coating are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIUZHOU HENGZHUO AUTO PARTS
- Filing Date
- 2025-07-04
- Publication Date
- 2026-05-15
AI Technical Summary
The existing muffler tailpipe spraying rotating bracket has a single function and low degree of automation, which affects spraying efficiency and coating quality.
A rotating support for spraying anti-corrosion coating on the tailpipe of a muffler was designed, which includes a drive mechanism and a positioning mechanism. The tailpipe is rotated by a motor and the nozzle is oscillated back and forth to achieve uniform spraying of coating on the surface of the tailpipe.
It improves spraying efficiency, ensures coating uniformity, avoids the instability of manual spraying, and enhances coating quality.
Smart Images

Figure CN224237216U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of muffler tailpipe manufacturing technology, and in particular to a rotating bracket for spraying anti-rust coating on muffler tailpipes. Background Technology
[0002] The production of muffler tailpipes is an important part of automobile exhaust system manufacturing, and the application of anti-corrosion coating is an essential step in this process. By applying an anti-corrosion coating to the surface of the muffler tailpipe, its corrosion resistance can be improved, ensuring long-term stable operation.
[0003] When applying an anti-corrosion coating to the tailpipe of a muffler, a rotating bracket is usually needed. This bracket is driven by a motor to rotate the tailpipe at a constant speed, allowing workers to evenly cover the outer surface with the anti-corrosion coating and avoid problems such as missed areas or uneven thickness.
[0004] However, the rotating brackets currently used for spraying muffler tailpipes have relatively limited functions, typically only capable of clamping and rotating the tailpipe. The spraying of the anti-corrosion coating still relies on manual operation. This semi-automatic method is not only inefficient, but the instability of manual spraying can also affect the coating quality. Therefore, a rotating bracket for spraying anti-corrosion coatings on muffler tailpipes is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a rotating bracket for spraying anti-corrosion coating on the tailpipe of a muffler, which aims to improve the problem mentioned in the prior art that "the rotating bracket has a single function, low degree of automation, and affects spraying efficiency".
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a rotating bracket for spraying anti-corrosion coating on a muffler tailpipe includes a base, a splash guard fixedly connected to the top side wall of the base, a flexible hose connected through and fixedly connected to the inner wall of the splash guard, a nozzle fixedly connected to the bottom end of the flexible hose, and a drive mechanism and a positioning mechanism are provided inside the base.
[0007] The drive mechanism includes a motor, which is fixedly installed inside the base. The output end of the motor is fixedly connected to a rotating shaft, and a roller is fixedly connected to the outer wall of the rotating shaft. A connecting rod is rotatably connected through the side wall of the splash shield. One end of the connecting rod is fixedly connected to the side wall of the nozzle, and the other end of the connecting rod is fixedly connected to a protrusion. A drive shaft is slidably connected through the inner wall of the base. A connecting rod is hinged to one end of the drive shaft, and a driven bevel gear is fixedly connected to the other end of the drive shaft. A driving bevel gear is fixedly connected to the outer wall of the rotating shaft.
[0008] As a further description of the above technical solution:
[0009] The positioning mechanism includes a slider that is slidably connected to the inner wall of the base.
[0010] As a further description of the above technical solution:
[0011] The slider is rotatably connected to a rotating rod on its side wall, and a rubber wheel is fixedly connected to the outer wall of the rotating rod.
[0012] As a further description of the above technical solution:
[0013] A screw is rotatably connected to the inner wall of the base, and the screw is threadedly connected to the slider.
[0014] As a further description of the above technical solution:
[0015] A knob is fixedly connected to the bottom end of the screw.
[0016] As a further description of the above technical solution:
[0017] The outer wall of the wall roller is fitted with a tailpipe housing.
[0018] As a further description of the above technical solution:
[0019] The rotating shaft passes through and is rotatably connected to the inner wall of the base, and the driving bevel gear meshes with the driven bevel gear.
[0020] As a further description of the above technical solution:
[0021] The hinge point between the rod and the drive shaft is offset from the central axis of the drive shaft, and the end of the connecting rod away from the drive shaft is hinged to the side wall of the protrusion.
[0022] This utility model has the following beneficial effects:
[0023] 1. In this utility model, the drive mechanism not only allows the tailpipe housing to rotate slowly, but also allows the nozzle to swing back and forth, thereby evenly spraying the anti-rust coating onto the surface of the tailpipe housing. This eliminates the need for manual spraying, which not only improves work efficiency but also avoids the impact of the instability of manual spraying on the coating quality.
[0024] 2. In this utility model, by setting up a positioning mechanism, tailpipe housings of different diameters can be pressed against the outer wall of the roller, thereby making the tailpipe housing rotate more smoothly and improving the uniformity of the anti-rust coating spraying. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0026] Figure 2This is a cross-sectional structural diagram of the base of this utility model;
[0027] Figure 3 This is a schematic diagram of the overall structure of the slider of this utility model.
[0028] Legend:
[0029] 1. Base; 2. Splash shield; 3. Hose; 4. Nozzle; 5. Drive mechanism; 51. Motor; 52. Rotating shaft; 53. Roller; 54. Connecting rod; 55. Protrusion; 56. Drive shaft; 57. Connecting rod; 58. Driven bevel gear; 59. Driven bevel gear; 6. Positioning mechanism; 61. Slider; 62. Rotating rod; 63. Rubber wheel; 64. Screw; 65. Knob; 7. Tailpipe housing. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0031] Reference Figures 1-3 An embodiment of this utility model provides a rotating support for spraying anti-corrosion coating on a muffler tailpipe, comprising a base 1, a splash guard 2 fixedly connected to the top side wall of the base 1, the splash guard 2 preventing the anti-corrosion coating from splashing upwards, a hose 3 fixedly connected through the inner wall of the splash guard 2, a nozzle 4 fixedly connected to the bottom end of the hose 3, the anti-corrosion coating being injected into the nozzle 4 through the hose 3, so that the nozzle 4 can spray the anti-corrosion coating onto the surface of the tailpipe shell, and a drive mechanism 5 and a positioning mechanism 6 are provided inside the base 1.
[0032] Reference Figures 1-3The drive mechanism 5 includes a motor 51, which is fixedly installed inside the base 1. A rotating shaft 52 is fixedly connected to the output end of the motor 51. The rotating shaft 52 passes through and is rotatably connected to the inner wall of the base 1. A roller 53 is fixedly connected to the outer wall of the rotating shaft 52. Both the roller 53 and the rubber wheel 63 are made of rubber. Starting the motor 51 drives the rotating shaft 52 to rotate, which in turn drives the roller 53 to rotate synchronously. At this time, the roller 53 can drive the tailpipe housing 7 to rotate slowly. The tailpipe housing 7 is placed on the outer wall of the roller 53. The tailpipe housing 7, which needs to be coated with an anti-rust coating, is fitted onto the outer wall of the rotating shaft 52, so that the roller 53 on the outer wall of the rotating shaft 52 fits against the inner wall of the tailpipe housing 7. A connecting rod 54 passes through and is rotatably connected to the side wall of the splash guard 2. One end of the connecting rod 54 is fixedly connected to the side wall of the nozzle 4, and the other end of the connecting rod 54 is fixedly connected to a protrusion 55. As the connecting rod 54 reciprocates, it drives the nozzle 4 to swing back and forth. The reciprocating oscillation of the nozzle 4 allows the anti-rust coating sprayed out to be evenly spread on the surface of the tailpipe housing 7. The inner wall of the base 1 is slidably connected to a drive shaft 56. One end of the drive shaft 56 is hinged to a connecting rod 57. The hinge point between the connecting rod 57 and the drive shaft 56 is off-center from the central axis of the drive shaft 56. The end of the connecting rod 57 away from the drive shaft 56 is hinged to the side wall of the protrusion 55. When the drive shaft 56 rotates, it works with the connecting rod 57 and the protrusion 55 to drive the connecting rod 54 to reciprocate on the inner wall of the splash shield 2. The other end of the drive shaft 56 is fixedly connected to a driven bevel gear 58. When the driven bevel gear 58 rotates, it drives the drive shaft 56 to rotate synchronously on the inner wall of the base 1. The outer wall of the rotating shaft 52 is fixedly connected to a driving bevel gear 59. When the rotating shaft 52 rotates, it drives the driving bevel gear 59 to rotate synchronously. The driving bevel gear 59 meshes with the driven bevel gear 58. When the driving bevel gear 59 rotates, it drives the driven bevel gear 58 that it meshes with to rotate.
[0033] Reference Figures 2-3 The positioning mechanism 6 includes a slider 61, which is slidably connected to the inner wall of the base 1. A rotating rod 62 is rotatably connected to the side wall of the slider 61. The rotating rod 62 is parallel to the rotating shaft 52. A rubber wheel 63 is fixedly connected to the outer wall of the rotating rod 62. By sliding the slider 61 in conjunction with the rotating rod 62 and the rubber wheel 63, the tail tube housing 7 can be pressed against the outer wall of the roller 53, thereby making the tail tube housing 7 rotate more smoothly. A screw 64 is rotatably connected to the inner wall of the base 1. The screw 64 is threadedly connected to the slider 61. A knob 65 is fixedly connected to the bottom end of the screw 64. By rotating the screw 64 through the knob 65, the screw 64 can drive the slider 61, which is threadedly connected to it, to slide up and down on the inner wall of the base 1.
[0034] Working principle: The tailpipe housing 7, which requires anti-corrosion coating, is fitted onto the outer wall of the rotating shaft 52, so that the roller 53 on the outer wall of the rotating shaft 52 is in contact with the inner wall of the tailpipe housing 7. Then, the motor 51 is started to drive the rotating shaft 52 to rotate. The rotation of the rotating shaft 52 will drive the roller 53 to rotate synchronously. At this time, the roller 53 can drive the tailpipe housing 7 to rotate slowly. Simultaneously, the anti-corrosion coating is injected into the nozzle 4 through the hose 3, so that the nozzle 4 sprays the coating onto the surface of the tailpipe housing. The rotation of the rotating shaft 52 will drive the drive bevel gear 59 to rotate synchronously. The rotation of the drive bevel gear 59 will drive the roller 53 to rotate synchronously. The driven bevel gear 58 rotates, which drives the drive shaft 56 to rotate on the inner wall of the base 1. While the drive shaft 56 rotates, it pushes and pulls the connecting rod 57 back and forth, causing the connecting rod 57 to push and pull the protrusion 55 back and forth. At this time, the protrusion 55 swings back and forth and drives the connecting rod 54 to rotate back and forth on the inner wall of the splash guard 2. While the connecting rod 54 is rotating back and forth, it drives the nozzle 4 to swing back and forth. Through the back and forth swing of the nozzle 4, the anti-rust coating sprayed out can be evenly spread on the surface of the tail pipe housing 7, so that the anti-rust coating can be automatically and evenly sprayed on the tail pipe housing 7 while it is rotating.
[0035] After the tailpipe housing 7 is placed on the outer wall of the roller 53, the screw 64 is rotated by the knob 65. The rotation of the screw 64 drives the slider 61, which is threaded to it, to slide downward on the inner wall of the base 1. At this time, the slider 61 will drive the rotating rod 62 to move downward synchronously until the rubber wheel 63 on the outer wall of the rotating rod 62 is in contact with the inner wall of the tailpipe housing 7. At this time, under the support of the rubber wheel 63 and the roller 53, the tailpipe housing 7 can rotate more smoothly, thereby improving the uniformity of the anti-rust coating spraying.
[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 rotating bracket for spraying anti-corrosion coating on a muffler tailpipe, comprising a base (1), characterized in that: A splash shield (2) is fixedly connected to the top side wall of the base (1). A hose (3) is fixedly connected through the inner wall of the splash shield (2). A nozzle (4) is fixedly connected to the bottom end of the hose (3). A drive mechanism (5) and a positioning mechanism (6) are provided inside the base (1). The drive mechanism (5) includes a motor (51), which is fixedly installed inside the base (1). The output end of the motor (51) is fixedly connected to a rotating shaft (52). A roller (53) is fixedly connected to the outer wall of the rotating shaft (52). A connecting rod (54) is rotatably connected through the side wall of the splash shield (2). One end of the connecting rod (54) is fixedly connected to the side wall of the nozzle (4). A protrusion (55) is fixedly connected to the other end of the connecting rod (54). A transmission shaft (56) is slidably connected through the inner wall of the base (1). A connecting rod (57) is hinged to one end of the transmission shaft (56). A driven bevel gear (58) is fixedly connected to the other end of the transmission shaft (56). A driving bevel gear (59) is fixedly connected to the outer wall of the rotating shaft (52).
2. The muffler tailpipe anti-corrosion coating spraying rotating bracket according to claim 1, characterized in that: The positioning mechanism (6) includes a slider (61) which is slidably connected to the inner wall of the base (1).
3. The muffler tailpipe anti-corrosion coating spraying rotating bracket according to claim 2, characterized in that: The side wall of the slider (61) is rotatably connected to a rotating rod (62), and the outer wall of the rotating rod (62) is fixedly connected to a rubber wheel (63).
4. The muffler tailpipe anti-corrosion coating spraying rotating bracket according to claim 1, characterized in that: The inner wall of the base (1) is rotatably connected to a screw (64), and the screw (64) is threadedly connected to the slider (61).
5. The muffler tailpipe anti-corrosion coating spraying rotating bracket according to claim 4, characterized in that: A knob (65) is fixedly connected to the bottom end of the screw (64).
6. The muffler tailpipe anti-corrosion coating spraying rotating bracket according to claim 1, characterized in that: The outer wall of the roller (53) is fitted with a tailpipe housing (7).
7. The muffler tailpipe anti-corrosion coating spraying rotating bracket according to claim 1, characterized in that: The rotating shaft (52) passes through and is rotatably connected to the inner wall of the base (1), and the driving bevel gear (59) meshes with the driven bevel gear (58).
8. The muffler tailpipe anti-corrosion coating spraying rotating bracket according to claim 1, characterized in that: The hinge point between the connecting rod (57) and the drive shaft (56) is offset from the central axis of the drive shaft (56), and the end of the connecting rod (57) away from the drive shaft (56) is hinged to the side wall of the protrusion (55).