Gas distribution pipeline for coating

Abstract

The utility model relates to the technical field of vacuum coating, in particular to a gas distribution pipeline for coating. The end part of the central pipeline and the end part of the outer pipeline are welded and sealed, one end of the central pipeline is sleeved with the outer pipeline, air outlet holes are uniformly formed in the surface of the central pipeline positioned in the outer pipeline, outer pipeline holes are uniformly distributed in the outer pipeline, and the outer pipeline is meshed and connected with the bushing through the outer pipeline holes. The outer side of the bushing is provided with bushing external threads, the inner side of the bushing is provided with bushing internal threads, and the bushing internal threads of the bushing are obliquely provided with air outlet chutes. Compared with the prior art, the exhaust pipeline is uniform in air outlet, so that the coating is uniform, and the coating quality is improved. The size of the air hole can be adjusted through the plug in the bushing so as to adjust the air quantity, so that the air distribution pipeline is prevented from being directly replaced after the chute is blocked, the waste is reduced, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum coating, in particular to an air distribution pipeline for coating. Background Art

[0002] During vacuum coating, a certain amount of gas needs to be introduced into the chamber to facilitate the coating reaction. However, the current method uses a straight pipe with holes drilled above for exhaust. This method often produces a larger amount of gas near the outlet and a smaller amount at the end, resulting in uneven gas flow overall, which can cause uneven coating and affect coating quality. Furthermore, the holes in the current exhaust pipes become clogged after a period of time and are difficult to clean, often requiring immediate replacement, which is wasteful. Utility Model Content

[0003] To address the problems raised in the aforementioned background technology, the present invention provides a gas distribution duct for coating. The ends of the central duct and the outer duct are welded and sealed. The outer duct is sheathed over one end of the central duct. Air outlet holes are evenly distributed on the surface of the central duct within the outer duct. The outer duct is evenly distributed with outer duct holes and is meshed with a bushing through the outer duct holes. The bushing has external bushing threads on the outside and internal bushing threads on the inside. The inner bushing threads of the bushing have angularly arranged air outlet chute grooves.

[0004] The inner side of the outer pipe hole is threaded and meshes with the outer thread of the bushing.

[0005] The bushing is integrally formed, and one end is provided with a bushing external hexagonal nut.

[0006] A plug is provided in the middle of the bushing, which is engaged and connected with the middle plug through the internal thread of the bushing.

[0007] The plug is integrally formed, a plug thread is arranged on the outside of the plug, and an external hexagonal nut is arranged on one end of the plug.

[0008] The air outlet chute is connected to the internal thread of the bushing and the end surface of the external hexagonal nut of the bushing.

[0009] Compared with the existing technology, the utility model has a uniform exhaust pipe, which makes the coating uniform and improves the coating quality. The air volume can be adjusted by adjusting the size of the air hole through the plug in the filler, avoiding the need to directly replace the air distribution pipe after the chute is blocked, reducing waste and lowering production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is the overall layout of the gas distribution duct of the utility model.

[0011] FIG2 is a schematic diagram of the outer pipeline structure of the present invention.

[0012] FIG3 is a schematic diagram of the central pipeline structure of the present invention.

[0013] FIG4 is a perspective schematic diagram of the bushing structure of the present invention.

[0014] FIG5 is a cross-sectional schematic diagram of the bushing structure of the present invention.

[0015] FIG6 is a top view of the bushing structure of the present invention.

[0016] FIG7 is a schematic diagram of the structure of the intermediate plug of the utility model.

[0017] See also Figures 1 to 7 1. Center pipe; 2. Outer pipe; 3. Bushing; 4. Plug; 5. Outer pipe hole; 6. Air outlet hole; 7. Bushing internal thread; 8. Bushing external thread; 9. Bushing external hexagonal nut; 10. Air outlet chute; 11. Plug thread; 12. Plug external hexagonal nut. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] like Figures 1 to 7 As shown, the end of the central pipe 1 and the end of the outer pipe 2 are welded and sealed, the outer pipe 2 is sleeved on the outside of one end of the central pipe 1, and the surface of the central pipe 1 located in the outer pipe 2 is evenly provided with air outlet holes. The central pipe 1 is evenly distributed with air outlet holes 6 to ensure that all gas can only come out from the air outlet holes 6 of the central pipe 1. The gas will mix between the holes of the outer pipe 2 and the central pipe 1, which can make the air outlet of the outer pipe 2 more uniform.

[0020] The outer pipe 2 is evenly distributed with outer pipe holes 5, the inner side of the outer pipe holes 5 is threaded, and is engaged with the outer core external threads 8 on the outer side of the bushing 3, and is engaged with the inner core internal threads 7 on the inner side of the bushing 3 and the plug thread 11 of the plug.

[0021] The bushing 3 is integrally formed, with external bushing threads 8 on the outside, internal bushing threads 7 on the inside, and a bushing external hexagonal nut 9 at one end. An air outlet chute 10 is obliquely provided on the internal bushing threads 7 of the bushing 3. This chute connects the internal bushing threads 7 and the end face of the hexagonal bushing nut 9, allowing gas to be discharged into the chamber through the chute.

[0022] The plug 4 is integrally formed, and a hexagonal nut 12 is provided at one end of the plug. The plug thread 11 outside the plug 4 is engaged with the internal thread 7 of the bushing to better seal the air hole to control the air output.

[0023] During use, gas mixes between the central pipe 1 and the outer pipe 2, redistributing the gas for a more even distribution when it exits the outer pipe 2. Use a wrench to tighten the outer hexagonal nut 9 of the bushing to secure the bushing 3 to the outer pipe 2. If the outlet chute 10 of the bushing 3 is completely blocked, the problem can be repaired by replacing the bushing 3. Use a wrench to tighten the outer hexagonal nut 12 of the plug. By adjusting the screw-in distance of the intermediate plug 4, the size of the outlet chute 10 can be controlled, thereby controlling the outlet volume, achieving the purpose of locally adjusting the gas volume as needed. If the outlet chute 10 is blocked, simply adjust the screw-in distance of the intermediate plug 4 to readjust the gas volume.

Claims

1. A gas distribution pipe for coating, comprising a central pipe (1), an outer pipe (2), and a bushing (3), characterized in that: The ends of the central pipe (1) and the ends of the outer pipe (2) are welded and sealed. The outer pipe (2) is sleeved on the outer side of one end of the central pipe (1). The surface of the central pipe (1) located inside the outer pipe (2) is evenly provided with air outlet holes (6). The outer pipe (2) is evenly distributed with outer pipe holes (5). The outer pipe holes (5) and the bushing (3) are engaged and connected. The outer side of the bushing (3) is provided with a bushing outer thread (8), and the inner side is provided with a bushing inner thread (7). The bushing inner thread (7) of the bushing (3) is obliquely provided with an air outlet chute (10).

2. The gas distribution duct for coating according to claim 1, characterized in that: The inner side of the outer pipe hole (5) is threaded and meshes with the outer thread (8) of the bushing.

3. The gas distribution duct for coating according to claim 1, characterized in that: The bushing (3) is integrally formed, and one end is provided with a bushing outer hexagonal nut (9).

4. The gas distribution duct for coating according to claim 1, characterized in that: A plug (4) is provided in the middle of the bushing (3), and is engaged and connected with the middle plug (4) through the inner thread of the bushing (7).

5. The gas distribution duct for coating according to claim 4, characterized in that: The plug (4) is integrally formed, and a plug thread (11) is provided on the outside of the plug (4), and a plug external hexagonal nut (12) is provided at one end of the plug (4).

6. The gas distribution duct for coating according to claim 1, characterized in that: The air outlet chute (10) is connected to the end surface of the bushing internal thread (7) and the bushing external hexagonal nut (9).

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