Air inlet pipe of coating machine

Abstract

The utility model relates to a kind of air inlet pipe of coating machine, including first installation part, including the first side and the second side of oppositely arranged, the first side is uniformly provided with multiple air outlet holes, the air outlet hole penetrates the first side and the second side, the first side is provided with the annular ring that is concave downward around each air outlet hole, the inner diameter of this annular ring is greater than the inner diameter of the air outlet hole, and air outlet sealing boss is formed around air outlet hole;Second installation part, the first installation part and second installation part are fixedly connected together by bolt and form the body part of air inlet pipe;Sealing nut, its inner diameter size is same with the outer diameter of the air outlet sealing boss.Cleaning air inlet pipe with sand blasting machine, air outlet hole is blocked by sealing nut, prevent sand blasting abrasive from entering air outlet hole and cause aperture to become larger.

Description

Technical Field

[0001] This utility model relates to the field of coating machine technology, and in particular to an air inlet pipe for a coating machine. Background Technology

[0002] From electronic components to optical devices, substrates have a wide range of applications. Coating technology, with its superior thin film quality and broad applicability, has become one of the key methods for improving substrate performance in modern industry. The main purpose of coating substrates is to form a thin film with specific functions on its surface to improve substrate performance and expand its application scenarios. During coating, reactive gases need to be introduced into the coating machine through an inlet pipe.

[0003] An existing coating machine has an air inlet pipe with multiple evenly distributed air outlets. After the reactant gas enters the air inlet pipe, it is evenly discharged into the coating machine through these outlets. Over time, chromium accumulates on the outer surface of the air inlet pipe. Excessive chromium buildup can lead to defects such as particles and pinholes on the coated substrate, affecting the coating quality. Therefore, sandblasting is necessary to clean the surface of the air inlet pipe. However, in existing air inlet pipes, the outlets remain exposed during cleaning, causing the orifice diameter to enlarge due to friction from the sandblasting abrasive. This results in inaccurate gas discharge from the air inlet pipe, leading to uneven distribution of reactant gas into the coating machine after repeated use, ultimately deteriorating the final coating effect. Utility Model Content

[0004] Based on this, the purpose of this utility model is to overcome the defects or deficiencies of the prior art and provide an air inlet pipe for a coating machine.

[0005] An air inlet pipe for a coating machine includes:

[0006] The first mounting part includes a first side and a second side disposed opposite to each other. A plurality of air outlets are evenly disposed on the first side, and the air outlets penetrate the first side and the second side. A downwardly recessed ring is disposed around each air outlet on the first side, and the inner diameter of the ring is larger than the inner diameter of the air outlet, forming a frustum-shaped air outlet sealing protrusion around the air outlet.

[0007] The second mounting part is formed by fixing the first mounting part and the second mounting part together with bolts to form the body part of the air intake pipe;

[0008] The sealing nut has the same inner diameter as the outer diameter of the vent sealing boss.

[0009] When it is necessary to use a sandblasting machine to clean the chromium adhering to the outside of the air inlet pipe, the air outlet is blocked by the fit between the sealing nut and the air outlet sealing boss to prevent the sandblasting abrasive from entering the air outlet; during normal use, the sealing nut is removed from the air outlet sealing boss.

[0010] Furthermore, the first mounting part is a rectangular metal block, which also includes a top surface and a bottom surface arranged opposite to each other; the first mounting part is also provided with an air guide groove that penetrates the top surface and the bottom surface, and the air guide groove is connected to all the air outlets.

[0011] The reactive gas enters the inlet pipe through the gas guide groove and is emitted into the coating machine through the gas outlet.

[0012] Furthermore, the second mounting part is a rectangular metal block, the size of which of its largest side surfaces is the same as the first and second side surfaces of the first mounting part, so that the second mounting part can fit completely against the first mounting part.

[0013] Furthermore, the gas guide groove has a first air inlet on its top surface and a second air inlet on its bottom surface. When using the air inlet pipe, the reactant gas is introduced into the gas guide groove through the first or second air inlet.

[0014] Furthermore, it also includes a sealing gasket, on which an elliptical annular first sealing gasket mounting groove is formed by a downward indentation on the second side outside all the vent holes, the first sealing gasket mounting groove completely enclosing the vent holes; a second sealing gasket mounting groove with the same size and position as the first sealing gasket mounting groove of the first mounting part is also provided on the side with the largest area of ​​the second mounting part; when the second side of the first mounting part and the side of the second mounting part with the second sealing gasket mounting groove are in contact, the sealing gasket is pressed into the first sealing gasket mounting groove and the second sealing gasket mounting groove.

[0015] Furthermore, the sealing gasket is an elliptical ring-shaped elastic sealing structure, and its size is the same as that of the first sealing gasket mounting groove.

[0016] When the side of the second mounting part 20 with the second sealing gasket mounting groove 222 is in contact with the second side 12 of the first mounting part 10, the sealing gasket is pressed into the first sealing gasket mounting groove and the second sealing gasket mounting groove. At this time, the sealing gasket is closed between the first mounting part 10 and the second mounting part 20, and all the vent holes 112 are sealed inside, preventing the reactive gas from overflowing from the gap between the first mounting part 10 and the second mounting part 20. When the reactive gas fills the entire gas guide groove, it is discharged into the coating machine through the vent holes, thereby providing uniform reactive gas to the coating machine.

[0017] Furthermore, the top surface has a downwardly recessed ring around the first air inlet, the inner diameter of which is larger than the inner diameter of the first air inlet, forming a frustum-shaped first air inlet sealing boss around the first air inlet; the bottom surface has a downwardly recessed ring around the second air inlet, the inner diameter of which is larger than the inner diameter of the second air inlet, forming a frustum-shaped second air inlet sealing boss around the second air inlet.

[0018] Furthermore, the inner surface of the sealing nut is provided with an internal thread, the outer surface of the air outlet sealing boss is provided with an external thread, and the outer surfaces of the first air inlet sealing boss and the second air inlet sealing boss are provided with external threads; the sealing nut can be threadedly connected to the air outlet sealing boss, the first air inlet sealing boss and the second air inlet sealing boss.

[0019] When it is necessary to clean the chromium adhering to the outside of the air intake pipe with a sandblasting machine, the sealing nut, in conjunction with the first and second air intake sealing bosses, blocks the first and second air intake holes to prevent abrasive particles from entering and enlarging the hole diameter. During normal use, the sealing nut is removed from the first and second air intake sealing bosses.

[0020] Furthermore, the outer side of the first sealing gasket mounting groove on the second side is provided with a plurality of first fixing through holes penetrating the first and second sides; the side with the largest area of ​​the second mounting part is also provided with a second fixing through hole with the same size and position as the first fixing through hole of the first mounting part. The first mounting part and the second mounting part are fixedly connected together by bolts passing through the first fixing through hole and the second fixing through hole.

[0021] Furthermore, a sealing ring is provided at the thread stop point on the inner surface of the sealing nut to improve the airtightness of its threaded fit.

[0022] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0023] Figure 1 This is an exploded schematic diagram of the air inlet pipe structure of the coating machine according to this utility model;

[0024] Figure 2 This is a schematic diagram of the first side structure of the first mounting part;

[0025] Figure 3 This is a detailed structural diagram of the first mounting section;

[0026] Figure 4 This is a schematic diagram of the second side structure of the first mounting part;

[0027] Figure 5 This is a cross-sectional view of the first mounting section;

[0028] Figure 6 This is a structural schematic diagram of the second mounting section;

[0029] Figure 7 This is a schematic diagram of a sealing nut structure. Detailed Implementation

[0030] This utility model designs an air inlet pipe for a coating machine. By setting a threaded boss around the air outlet of the air inlet pipe, when the air inlet pipe is cleaned by a sandblasting machine, a sealing nut cooperates with the threaded boss to block the air outlet of the air inlet pipe, preventing the abrasive material ejected during sandblasting from entering the air outlet and causing the diameter of the air outlet to increase.

[0031] Please see Figure 1 This is a structural schematic diagram of the air inlet pipe of a coating machine according to this utility model. The air inlet pipe includes a first mounting part 10, a second mounting part 20, a sealing washer 30, and a sealing nut 40. The first mounting part 10 and the second mounting part 20 are fixedly connected together by bolts to form the body of the air inlet pipe. The sealing washer 30 is placed between the first mounting part 10 and the second mounting part to enhance the airtightness of the body of the air inlet pipe. The first mounting part 10 has a plurality of air outlet holes 112, and the number of sealing nuts 40 matches the number of air outlet holes. When cleaning the air inlet pipe, the air outlet holes 112 of the air inlet pipe are blocked by the sealing nuts 40 to prevent the abrasive material during sandblasting from entering the air outlet holes 112 and causing the diameter of the air outlet holes 112 to increase.

[0032] Please see Figures 2 to 5The first mounting portion 10 is a rectangular metal block, including a first side surface 11, a second side surface 12, a top surface 13, and a bottom surface 14. The first side surface 11 and the second side surface 12 are arranged opposite each other and are the two surfaces with the largest area in the first mounting portion 10. The top surface 13 and the bottom surface 14 are arranged opposite each other and are the two surfaces with the smallest area in the first mounting portion 10. A plurality of vent holes 112 are evenly arranged along the length direction on the first side surface 11, and the vent holes 112 penetrate the first side surface 11 and the second side surface 12. A downwardly recessed ring is provided around each vent hole 112 on the first side surface 11. The inner diameter of the ring is larger than the inner diameter of the vent hole 112. A frustum-shaped vent sealing boss 114 is formed around the vent hole 112, and the outer surface of the vent sealing boss 114 is provided with external threads. The first mounting portion is further provided with an air guide groove 15 penetrating the top surface 13 and the bottom surface 14, the air guide groove 15 communicating with all the air outlets 112; the air guide groove 15 forms a first air inlet 131 on the top surface 13 and a second air inlet 141 on the bottom surface 14; the top surface 13 has a downwardly recessed ring around the first air inlet 131, the inner diameter of which is larger than the inner diameter of the first air inlet 131, and a frustum-shaped first air inlet sealing boss 132 is formed around the first air inlet 131; the bottom surface 14 has a downwardly recessed ring around the second air inlet 141, the inner diameter of which is larger than the inner diameter of the second air inlet 141, and a frustum-shaped second air inlet sealing boss 142 is formed around the second air inlet 141. External threads are provided on the outer surfaces of the first air inlet sealing boss 132 and the second air inlet sealing boss 142. An elliptical annular first sealing gasket mounting groove 122 is formed on the outer side of all the vent holes 112, completely enclosing the vent holes 112. Multiple first fixing through holes 116 penetrating the first and second sides 11 are also provided on the outer side of the first sealing gasket mounting groove 122 on the second side 12.

[0033] Please see Figure 6 The second mounting part 20 is a rectangular metal block. The size of one of its largest side surfaces is the same as the first side surface 11 and the second side surface 12 of the first mounting part 10. The largest side surface of the second mounting part 20 is also provided with a second sealing gasket mounting groove 222 that is the same size and position as the first sealing gasket mounting groove 122 of the first mounting part 10. The largest side surface of the second mounting part 20 is also provided with a second fixing through hole 216 that is the same size and position as the first fixing through hole 116 of the first mounting part 10, penetrating the second mounting part 20.

[0034] The sealing gasket 30 is an elliptical ring-shaped elastic sealing structure, and its size is the same as that of the first sealing gasket mounting groove 122.

[0035] In use, the side of the second mounting part 20 with the second sealing gasket mounting groove 222 is fitted against the second side 12 of the first mounting part 10, and the sealing gasket 30 is pressed into the first sealing gasket mounting groove 122 and the second sealing gasket mounting groove 222. Bolts are passed through the first fixing through hole 116 and the second fixing through hole 216 and tightened. At this time, the first mounting part 10, the second mounting part 20, and the sealing gasket 30 form the main body of the air intake pipe. The sealing gasket is then sealed between the first mounting part 10 and the second mounting part 20, and all the air outlets 112 are sealed inside, preventing reactive gases from escaping from the gap between the first mounting part 10 and the second mounting part 20.

[0036] Please see Figure 7 The inner diameter of the sealing nut 40 is the same as the outer diameter of the outlet sealing boss 114, the first inlet sealing boss 132, and the second inlet sealing boss 142, and the inner surface of the sealing nut 40 is provided with internal threads. The sealing nut 40 can be threadedly connected to the outlet sealing boss 114, the first inlet sealing boss 132, and the second inlet sealing boss 142.

[0037] Preferably, a sealing ring is provided at the thread stop point on the inner surface of the sealing nut 40. When the sealing nut 40 is engaged with the air outlet sealing boss 114, the first air inlet sealing boss 132, and the second air inlet sealing boss 142, the sealing ring is pressed to improve the airtightness of the threaded engagement.

[0038] When the air inlet pipe is used, the first air inlet 131 or the second air inlet 141 is blocked by the sealing nut 40, allowing the reaction gas to enter the air guide groove 15 from the first air inlet 131 or the second air inlet 141. Since the sealing gasket 30 is closed between the first mounting part 10 and the second mounting part 20 and closes all the air outlets 112, the reaction gas will not overflow from the gap between the first mounting part 10 and the second mounting part 20. When the reaction gas fills the entire air guide groove 15, it is discharged into the coating machine through the air outlets 112, thereby providing uniform reaction gas for the coating machine.

[0039] When it is necessary to clean the chromium adhering to the outside of the air inlet pipe with a sandblasting machine, the air outlet 112, the first air inlet 131, and the second air inlet 141 are blocked by the fitting relationship between the sealing nut 40 and the air outlet sealing boss 114, the first air inlet sealing boss 132, and the second air inlet sealing boss 142, to prevent sandblasting abrasive from entering the air outlet 112, the first air inlet 131, and the second air inlet 141 and causing the orifice diameter to increase. During normal use, the sealing nut 40 is removed from the air outlet sealing boss 114, the first air inlet sealing boss 132, and the second air inlet sealing boss 142.

[0040] Compared to existing coating machine air inlets, the air inlet pipe of this invention redesigns its structure by incorporating an externally threaded sealing boss around the air outlet. When the air inlet pipe is cleaned using a sandblasting machine, the sealing nut engages with the threaded sealing boss to block the air outlet, preventing abrasive particles from entering and enlarging the outlet diameter, which would ultimately lead to inaccurate gas discharge and poor coating results.

[0041] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. An air inlet pipe for a coating machine, characterized in that: include: The first mounting part includes a first side and a second side disposed opposite to each other. A plurality of air outlets are evenly disposed on the first side, and the air outlets penetrate the first side and the second side. A downwardly recessed ring is disposed around each air outlet on the first side, and the inner diameter of the ring is larger than the inner diameter of the air outlet, forming a frustum-shaped air outlet sealing protrusion around the air outlet. The second mounting part is formed by fixing the first mounting part and the second mounting part together with bolts to form the body part of the air intake pipe; The sealing nut has the same inner diameter as the outer diameter of the vent sealing boss.

2. The air inlet pipe of the coating machine according to claim 1, characterized in that: The first mounting part is a rectangular metal block, which also includes a top surface and a bottom surface that are arranged opposite to each other; the first mounting part is also provided with an air guide groove that penetrates the top surface and the bottom surface, and the air guide groove is connected to all the air outlets.

3. The air inlet pipe of the coating machine according to claim 2, characterized in that: The second mounting part is a rectangular metal block, and the size of one of its largest side surfaces is the same as the first and second side surfaces of the first mounting part.

4. The air inlet pipe of the coating machine according to claim 2 or 3, characterized in that: The air guide groove forms a first air inlet on the top surface and a second air inlet on the bottom surface.

5. The air inlet pipe of the coating machine according to claim 3, characterized in that: It also includes a sealing gasket, and an elliptical annular first sealing gasket mounting groove is formed by a downward indentation on the second side outside all the vent holes, the first sealing gasket mounting groove completely enclosing the vent holes; a second sealing gasket mounting groove with the same size and position as the first sealing gasket mounting groove of the first mounting part is also provided on the side with the largest area of ​​the second mounting part; when the second side of the first mounting part and the side of the second mounting part with the second sealing gasket mounting groove are in contact, the sealing gasket is pressed into the first sealing gasket mounting groove and the second sealing gasket mounting groove.

6. The air inlet pipe of the coating machine according to claim 5, characterized in that: The sealing gasket is an elliptical ring-shaped elastic sealing structure, and its size is the same as that of the first sealing gasket mounting groove.

7. The air inlet pipe of the coating machine according to claim 4, characterized in that: The top surface has a downwardly recessed ring around the first air inlet, the inner diameter of which is larger than the inner diameter of the first air inlet, forming a frustum-shaped first air inlet sealing boss around the first air inlet; the bottom surface has a downwardly recessed ring around the second air inlet, the inner diameter of which is larger than the inner diameter of the second air inlet, forming a frustum-shaped second air inlet sealing boss around the second air inlet.

8. The air inlet pipe of the coating machine according to claim 7, characterized in that: The sealing nut has an internal thread on its inner surface, the exhaust sealing boss has an external thread on its outer surface, and the first and second intake sealing bosses have external threads on their outer surfaces. The sealing nut can be threadedly connected to the exhaust sealing boss, the first intake sealing boss, and the second intake sealing boss.

9. The air inlet pipe of the coating machine according to claim 5, characterized in that: The outer side of the first sealing gasket mounting groove on the second side is also provided with a plurality of first fixing through holes penetrating the first side and the second side; the side with the largest area of ​​the second mounting part is also provided with a second fixing through hole penetrating the second mounting part with the same size and position as the first fixing through hole of the first mounting part.

10. The air inlet pipe of the coating machine according to claim 8, characterized in that: A sealing ring is also provided at the thread stop point on the inner surface of the sealing nut.

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