A coated container

Abstract

A coating container includes: a container body having a workpiece receiving cavity and a workpiece placement inlet; a cover detachably connected to the container body, the cover being sealed to the edge of the workpiece placement inlet, the cover having a buffer cavity, the cover including a bottom corresponding to the workpiece placement inlet, the bottom having a plurality of first air holes spaced apart to communicate with the buffer cavity and the workpiece receiving cavity, and the cover also having an air supply port communicating with the buffer cavity for connecting to an external air source. Using this coating container, a gas pressure diffusion coating process can be used to coat the inner wall of the micron-level cavity on the workpiece surface, which reduces costs and improves production efficiency compared to vacuum coating technology. The above-described structure of the coating container makes the injection of inert compressed gas into the workpiece receiving cavity of the coating container smooth and uniform, resulting in more uniform diffusion of the thin film layer to the inner wall of the micron-level cavity on the workpiece surface.

Description

Technical Field

[0001] This utility model relates to a coating device, specifically a coating container used to form a film layer on the inner wall of a micron-level cavity on the surface of a workpiece. Background Technology

[0002] Some workpieces have micron-sized cavities on their surfaces. Vacuum coating techniques such as Chemical Vapor Deposition (CVD), Physical Vapor Deposition (PVD), or Electron Beam Physical Vapor Deposition (EPVD) can be used to form a film on the inner wall of the micron-sized cavities on the workpiece surface. These processes produce films with uniform thickness, but they are costly and have low production efficiency.

[0003] For products where film uniformity requirements are not high, reducing costs and improving production efficiency helps enhance the product's market competitiveness. Therefore, this utility model application is submitted. Utility Model Content

[0004] The purpose of this invention is to provide a coating container.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A coating container for forming a film layer on the inner wall of a micron-scale cavity on the surface of a workpiece, the coating container comprising:

[0007] A container body having a workpiece receiving cavity and a workpiece placement inlet; and

[0008] A lid is detachably connected to the container body. The lid is sealed to the edge of the workpiece inlet. The lid has a buffer cavity. The lid includes a bottom, which corresponds to the workpiece inlet. The bottom is provided with a plurality of first air holes at intervals, which connect the buffer cavity and the workpiece receiving cavity. The lid is also provided with an air supply port that communicates with the buffer cavity and is used to connect to an external air source.

[0009] In some embodiments, the cover includes a top plate and a bottom plate, which are arranged opposite each other vertically. The edges of the top plate and the bottom plate are connected, and the top plate and the bottom plate form a buffer cavity. The bottom plate constitutes the bottom of the cover, and the air supply port is located on the top plate.

[0010] In some embodiments, the air supply port is located at the center of the top plate, and the buffer cavity is configured such that the height of the buffer cavity gradually decreases along the direction from the center to the edge of the bottom plate.

[0011] In some embodiments, each first air hole is equally spaced at the bottom of the cover, and each first air hole forms a mesh structure at the bottom of the cover; the workpiece surface where the micron-sized cavity is located is provided with a paste-like or greasy thin film layer, and the shape and size of the mesh structure are adapted to the shape and size of the thin film layer.

[0012] In some embodiments, the workpiece is placed at the bottom of the workpiece receiving cavity, and the thin film layer faces the bottom of the cover.

[0013] In some embodiments, the container body is provided with a flange around the periphery of the workpiece receiving cavity, and the cover is bolted to the flange.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects:

[0015] Using this coated container, a micron-level cavity inner wall coating can be achieved on the workpiece surface through a gas pressure diffusion coating process. Compared with vacuum coating technology, this reduces costs and improves production efficiency.

[0016] The above-described structure of the coating container makes the inert compressed gas more evenly distributed during the process of injecting it into the workpiece accommodating cavity of the coating container due to the buffering effect of the buffer cavity and the dispersion effect of the first pore. This reduces the impact of the inert compressed gas on the thin film layer on the workpiece surface, makes the gas pressure at different positions of the thin film layer more uniform, and makes the diffusion of the thin film layer to the micron-level inner wall of the workpiece surface more uniform. Attached Figure Description

[0017] Figure 1 These are schematic diagrams of the coating container in some embodiments;

[0018] Figure 2 This is a schematic diagram showing the distribution of the first vent on the cover.

[0019] Figure 3 This is a schematic diagram of a workpiece;

[0020] Figure 4 This is a cross-sectional view of another workpiece;

[0021] Figure 5 This is a schematic diagram showing the result of printing a layer of paste or slurry material onto the surface of a workpiece.

[0022] Figure 6 This is a schematic diagram showing the state of the workpiece inside the coating container.

[0023] Figure 7 This is a schematic diagram showing the diffusion of the thin film layer into the inner wall of the cavity after the inert compressed gas is introduced. Detailed Implementation

[0024] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0025] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0026] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0027] Combination Figure 1 and Figure 2 In some embodiments, the coating container includes a container body 1 and a cover 3. The container body 1 is provided with a workpiece receiving cavity 11 and a workpiece placement inlet 13. The workpiece placement inlet 13 is located at the top of the container body 1. The cover 3 is detachably connected to the container body 1. The cover 3 is sealed to the edge of the workpiece placement inlet 13. The cover 3 is provided with a buffer cavity 32. The cover 3 includes a bottom, which corresponds to the workpiece placement inlet 13. The bottom of the cover 3 is provided with a first air hole 33 that connects the buffer cavity 32 and the workpiece receiving cavity 11. There are multiple first air holes 33, which are spaced apart at the bottom of the cover 3. The cover 3 is also provided with an air supply port 31 that communicates with the buffer cavity 32 and is used to input compressed gas from an external air source into the buffer cavity 32.

[0028] Figure 3 A workpiece 4 is shown, which is generally rectangular sheet-shaped. The upper surface of the workpiece 4 has 24 rectangular cavities 41 arranged in four rows and six columns. These cavities 41 form the cavity on the surface of the workpiece 4. The width and / or length of these cavities are on the micrometer scale.

[0029] Figure 4 Another workpiece 4 is shown, which is generally rectangular sheet-shaped. Multiple rows of cavities 41 are formed on the upper surface of the workpiece 4. These cavities 41 form cavities on the surface of the workpiece 4. The width and / or length of these cavities are on the micrometer scale.

[0030] Workpiece 4 can be a metal workpiece, a plastic workpiece, or a workpiece made of other materials; this utility model does not impose any restrictions.

[0031] by Figure 4 Taking workpiece 4 as an example, the coating method using a coating container is as follows:

[0032] Step 1: Print a thin film layer 5 onto the surface of the workpiece 4 with the cavity using a viscous paste or paste material. The state after printing is as follows. Figure 5 As shown, the thin film layer 5 floats at the opening of the cavity 41, and the inner wall of the cavity 41 is not covered with a paste or slurry material, that is, the inner wall of the micron-sized cavity on the surface of the workpiece 4 is not covered with a paste or slurry material.

[0033] Step 2: Place the workpiece 4, after the first step, into the workpiece receiving cavity 11 of the coating container 6 through the workpiece inlet 13, with the thin film layer 5 facing upwards towards the bottom of the cover 3 of the coating container 6. The workpiece 4 is positioned in the coating container 6 as follows: Figure 6 As shown. The air supply port 31 on the cover 3 of the coating container 6 is connected to an air source, wherein the air source is compressed gas, preferably inert compressed gas.

[0034] Step 3: Pressure Diffusion Coating. Open the gas source valve. Inert compressed gas enters the buffer chamber 32 on the cover 3 of the coating container 6 from the gas supply port 31. It diffuses and buffers in the buffer chamber 32, then disperses from multiple first gas holes 33 into the workpiece inlet 13 of the container body 1, and further into the workpiece receiving cavity 11 of the coating container 6. In the workpiece receiving cavity 11, it diffuses downwards, acting on the thin film layer 5 on the surface of the workpiece 4. Under the pressure of the gas, the thin film layer 5 on the surface of the workpiece 4 continuously flows and diffuses towards the inner wall of the concave cavity 41 on the surface of the workpiece 4, eventually becoming evenly distributed on the inner wall of the concave cavity 41 on the surface of the workpiece 4. The state of the thin film layer 5 after the flow and diffusion on the workpiece 4 is as follows: Figure 7 As shown, the diffusion direction of the gas in the workpiece accommodating cavity 11 is as follows: Figure 7 As shown by arrow 7 in the image.

[0035] To improve uniform coverage, consider repeating the printing and diffusion process 2-3 times for better results.

[0036] Step 4: Remove workpiece 4 from coating container 6, dry it, and obtain the finished product.

[0037] In the above coating method, if the inert compressed gas is directly injected into the workpiece cavity 11, it will impact the thin film layer 5, and the gas pressure on the thin film layer 5 will be uneven, affecting the uniformity of the diffusion of the thin film layer 5.

[0038] In this embodiment, by providing a buffer cavity 32 in the cover body 3 and providing multiple first air holes 33 at intervals at the bottom of the cover body 3, the multiple first air holes 33 connect the buffer cavity 32 and the workpiece receiving cavity 11. During the process of injecting inert compressed gas into the workpiece receiving cavity 11, the inert compressed gas first enters the buffer cavity 32 from the air supply port 31. After being buffered and diffused in the buffer cavity 32, it disperses into the workpiece receiving cavity 11 from the multiple first air holes 33. After diffusing downward in the workpiece receiving cavity 11, it acts on the thin film layer 5 on the surface of the workpiece 4. The buffering effect of the buffer cavity 32 makes the inert compressed gas smoother and reduces the impact on the thin film layer 5. The dispersing effect of the multiple first air holes 33 makes the gas pressure on different positions of the thin film layer 5 more uniform, thereby making the diffusion of the thin film layer 5 more uniform.

[0039] Reference Figure 1 Furthermore, the cover 3 includes a top plate 34 and a bottom plate 35, which are arranged vertically opposite each other. The edges of the top plate 34 and the bottom plate 35 are welded together to form a whole. The space between the top plate 34 and the bottom plate 35 forms a buffer cavity 32. The bottom plate 35 constitutes the bottom of the cover 3, and the air supply port 31 is located on the top plate 34. Specifically, the top plate 34 has a dome-shaped structure, and the bottom plate 35 is a flat plate. Optionally, a downward connecting ring can be provided on the edge of the top plate 34, with threads or snaps on the connecting ring, and an upward connecting ring can be provided on the edge of the bottom plate 35, with threads or snaps on the connecting ring. The top plate 34 and the bottom plate 35 are combined into a whole by the threads or snaps on the connecting ring, and a sealing ring is provided at the connection.

[0040] In this further embodiment, the cover 3 is formed by combining a top plate 34 and a bottom plate 35. This allows the top plate 34 with an air inlet 31 and the bottom plate 35 with a first air hole 33 to be formed first, and then the top plate 34 and the bottom plate 35 to be combined together. Compared with a one-piece molded cover 3, this combined structure of the cover 3 is easier to manufacture.

[0041] Reference Figure 1 Furthermore, the air supply port 31 is located at the center of the top plate 34, and the buffer cavity 32 is configured such that the height of the buffer cavity 32 gradually decreases along the direction from the center to the edge of the bottom plate 35.

[0042] In this further embodiment, after the inert compressed gas enters the buffer chamber 32 from the air supply port 31 at the center of the top plate 34, it gradually diffuses from the center to the surrounding area. During this diffusion process, the gas pressure gradually decreases, resulting in the gas pressure at the center of the buffer chamber 32 being greater than that at the edge. By setting the height of the edge of the buffer chamber 32 to be less than the height of the center of the buffer chamber 32, the pressure difference between the center and the edge of the buffer chamber 32 is reduced, thereby allowing the inert compressed gas to enter the workpiece receiving chamber 11 more evenly.

[0043] Reference Figure 2 Each first air hole 33 is equally spaced at the bottom of the cover body 3, forming a mesh structure 36 at the bottom of the cover body 3. The shape and size of the mesh structure 36 are adapted to the shape and size of the thin film layer 5 on the workpiece.

[0044] After the gas source is connected, the inert compressed gas is dispersed by the mesh structure 36 and diffuses downwards, then acts on each point of the thin film layer 5. The dispersing effect of the mesh structure 36 makes the pressure on each point of the thin film layer 5 more balanced, which is conducive to the uniform diffusion of the thin film layer 5 to the inner wall of the cavity on the workpiece 4.

[0045] Combination Figure 1 and Figure 6 The bottom 12 of the workpiece receiving cavity 11 forms a support platform for the workpiece. When in use, the workpiece 4 is placed on the bottom 12 of the workpiece receiving cavity 11, and the thin film layer 5 on the surface of the workpiece 4 faces the bottom of the cover 3.

[0046] In some embodiments, the diameter of the first pore 33 is between 1 mm and 2 mm.

[0047] Reference Figure 1 The container body 1 has flanges corresponding to the periphery of the workpiece accommodating cavity 11 and the periphery of the cover 3. The flanges are connected by bolts 2, detachably connecting the cover 3 and the container body 1 together. Using flanges and bolts 2 provides a reliable connection. The container body 1 and the cover 3 can also be detachably connected using other methods, such as threads or snap fasteners on the periphery of the cover 3 and the periphery of the container body 1, connecting the cover 3 to the container body 1 via these threads or snap fasteners.

[0048] The present invention has been described in detail above through specific embodiments. These detailed descriptions are only intended to help those skilled in the art understand the content of the present invention and should not be construed as limiting the scope of protection of the present invention. Various modifications and equivalent transformations made by those skilled in the art to the above solutions under the concept of the present invention should be included within the scope of protection of the present invention.

Claims

1. A coating vessel for forming a film layer on the inner wall of a microcavity on the surface of a workpiece, characterized by, The coating container includes: A container body having a workpiece receiving cavity and a workpiece placement inlet; and A lid is detachably connected to the container body. The lid is sealed to the edge of the workpiece inlet. The lid has a buffer cavity. The lid includes a bottom, which corresponds to the workpiece inlet. The bottom is provided with a plurality of first air holes at intervals, which connect the buffer cavity and the workpiece receiving cavity. The lid is also provided with an air supply port that communicates with the buffer cavity and is used to connect to an external air source.

2. The coating container according to claim 1, characterized in that: The cover includes a top plate and a bottom plate, which are arranged opposite each other vertically. The edges of the top plate and the bottom plate are connected, and the top plate and the bottom plate form a buffer cavity. The bottom plate constitutes the bottom of the cover, and the air supply port is located on the top plate.

3. The coating container according to claim 2, characterized in that: The air supply port is located at the center of the top plate, and the buffer cavity is configured such that the height of the buffer cavity gradually decreases along the direction from the center of the bottom plate to the edge.

4. The coating container according to claim 1, characterized in that: Each first air hole is equally spaced at the bottom of the cover, and each first air hole forms a mesh structure at the bottom of the cover. The workpiece surface where the micron-sized cavity is located is provided with a paste-like or greasy thin film layer, and the shape and size of the mesh structure are adapted to the shape and size of the thin film layer.

5. The coating container according to claim 4, characterized in that: The workpiece is placed at the bottom of the workpiece receiving cavity, and the thin film layer faces the bottom of the cover.

6. The coating container according to claim 1, characterized in that: The container body is provided with a flange around the periphery of the workpiece accommodating cavity, and the cover is bolted to the flange.

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