Strip-shaped product coating tool and vapor deposition device of strip-shaped product

Abstract

The utility model provides a band-shaped product coating tool and a vapor deposition device of band-shaped products, and relates to the technical field of carbon-carbon composite material processing equipment.The band-shaped product coating tool comprises a supporting assembly and a hanging assembly, the supporting assembly is arranged in a vapor deposition furnace, the hanging assembly is arranged at the top end of the supporting assembly, and the hanging assembly and the supporting assembly are encircled; the hanging assembly is arranged in the supporting assembly, so that a containing space is formed below the hanging assembly and in the supporting assembly, a hook of the hanging assembly is located in the containing space, to-be-processed strip-shaped products can be hung in the containing space, and a certain interval exists between the bottom end of each strip-shaped product and the furnace bottom. According to the invention, the coating on the front surface and the back surface of the strip-shaped product can be ensured to be uniform, a support structure does not need to be arranged on the strip-shaped product, and the phenomenon that the strip-shaped product is in contact with the support structure and cannot form the coating is avoided, so that the coating processing effect of the strip-shaped product is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of carbon-carbon composite material processing equipment, and more specifically, to a coating fixture for strip products and a vapor deposition apparatus for strip products. Background Technology

[0002] Carbon-carbon composites, with their lightweight, high-temperature resistance, high strength, and chemical stability, have become core materials in aerospace, new energy, photovoltaics, semiconductors, and medical fields. After being coated with pyrolytic carbon vapor phase coating, carbon-carbon composites form a dense protective layer that blocks oxygen from contacting the matrix, raising the oxidation resistance temperature to over 600℃. The layered structure of pyrolytic carbon possesses lubricating properties, reducing the coefficient of friction to below 0.1 and significantly improving wear resistance. Pyrolytic carbon fills the pores through chemical vapor infiltration (CVI), reducing the porosity to below 1% and increasing the overall density of the material.

[0003] When loading carbon-carbon composite strip products into a chemical vapor deposition furnace, carbon or graphite support strips need to be placed on the furnace bottom plate, and then the strip products are placed horizontally on the support strips. The process principle of pyrolytic carbon coating is that carbon source gas (methane, propylene, etc.) enters from the bottom of the deposition furnace to accumulate on the surface of the strip products, forming a dense coating.

[0004] However, in this structure, the upper and lower surfaces of the strip product are perpendicular to the direction of the carbon source gas, with the lower surface directly facing the carbon source gas. More carbon is deposited on this surface, while less carbon is deposited on the back side due to being blocked. This can easily lead to color differences between the two surfaces. At the same time, carbon atoms cannot enter where the strip product contacts the support strip, preventing the formation of a coating at that point and resulting in poor coating processing of the strip product. Utility Model Content

[0005] The purpose of this utility model is to provide a coating fixture for strip products, so as to alleviate the technical problems in the prior art where color difference easily occurs between the upper and lower surfaces of the strip product, and carbon atoms cannot enter where the strip product contacts the support strip, resulting in the inability to form a coating at that location, thus causing poor coating processing effect of the strip product.

[0006] This utility model provides a strip product coating fixture for vapor phase coating process, including: a support component and a suspension component; the support component extends vertically and its bottom end is used to be set into a vapor phase deposition furnace; the suspension component is located at the top of the support component, and the suspension component includes a plurality of hooks extending downward for hanging the strip product; wherein the suspension component and the support component together form a receiving space, and the hooks are located in the receiving space.

[0007] Furthermore, the suspension assembly also includes a mounting frame and a suspension member; the mounting frame is a hollow structure, and is mounted on one end of the support assembly located at the top of the receiving space and detachably connected to the support assembly; the suspension member is detachably mounted on the mounting frame, and a plurality of hooks are spaced horizontally on the suspension member.

[0008] Furthermore, the mounting bracket is provided with an overlap groove; the overlap groove is adapted to the end of the suspension member, and both ends of the suspension member are located in the overlap groove.

[0009] Furthermore, the mounting bracket is a mounting ring; there are multiple overlapping grooves, which are spaced apart on the mounting ring in the same direction; there are multiple hanging members, which are arranged one-to-one with the multiple overlapping grooves.

[0010] Furthermore, the hook has an extension and a hanging part; one end of the extension is connected to the suspension member, and the other end extends into the receiving space; the hanging part is located at the end of the extension away from the suspension member and extends horizontally, so as to form two hooks for hanging the strip product at both ends in the horizontal direction.

[0011] Furthermore, the support assembly includes support bars; there are multiple support bars, which are spaced apart circumferentially along the mounting frame 210.

[0012] Furthermore, the top end of the support bar is detachably connected to the mounting bracket via carbon fiber bolts.

[0013] Furthermore, the support assembly also includes an arc-shaped locking member; the arc-shaped locking member is located outside the accommodating space and its two ends are detachably connected to two adjacent support bars respectively. There are multiple arc-shaped locking members, and the multiple arc-shaped locking members are respectively disposed between the multiple support bars.

[0014] The present invention also aims to provide a vapor deposition apparatus for strip products, including a furnace body and a strip product coating fixture; the furnace body includes a furnace wall and a furnace bottom, the furnace wall and the furnace bottom together forming a processing space; the strip product coating fixture is disposed in the processing space, and the bottom end of the support component of the strip product coating fixture is provided at the furnace bottom.

[0015] Beneficial effects:

[0016] Specifically, in the strip product coating fixture provided by this utility model, the support component is set inside the vapor deposition furnace, and the suspension component is set at the top of the support component and surrounds the support component, thereby forming a receiving space below the suspension component and inside the support component. The hook of the suspension component is located in the receiving space, and the strip product to be processed can be hung in the receiving space. There is a certain gap between the bottom of the strip product and the bottom of the vapor deposition furnace. Under this structure, when performing vapor deposition coating processing on the strip product, since the strip products are all vertically suspended and each strip product is parallel to the airflow direction, it can ensure that the coating on the front and back of the strip product is relatively uniform. Moreover, there is no need to set a support structure on the strip product, avoiding the phenomenon that the strip product cannot form a coating due to contact with the support structure, thereby improving the coating processing effect of the strip product.

[0017] The vapor deposition apparatus for strip products provided by this utility model includes a furnace body and a strip product coating fixture. The strip product coating fixture has the advantages mentioned above compared with the prior art, which will not be elaborated here. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of the strip product coating tooling provided in this embodiment of the utility model;

[0020] Figure 2 A schematic diagram of the suspension component in the strip product coating tooling provided in this embodiment of the utility model;

[0021] Figure 3 A schematic diagram of the mounting frame in the strip product coating tooling provided in this embodiment of the utility model;

[0022] Figure 4 A schematic diagram showing the positional relationship between the strip product coating fixture and the furnace body provided in this embodiment of the utility model;

[0023] Figure 5 for Figure 4 Top view.

[0024] icon:

[0025] 100 – Support assembly; 110 – Carbon bolt;

[0026] 200 – Suspension assembly; 210 – Mounting bracket; 211 – Overlap groove; 220 – Suspension element; 221 – Extension; 222 – Hanging part;

[0027] 300 – Strip products;

[0028] 400 - Furnace body; 410 - Furnace wall; 420 - Furnace bottom. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, 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 some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0036] See Figures 1 to 5 The strip product coating fixture provided in this embodiment is applied to the vapor phase coating process and specifically includes a support component 100 and a suspension component 200.

[0037] The support assembly 100 extends vertically and its bottom end is used to be installed in a vapor deposition furnace. The suspension assembly 200 is located at the top of the support assembly 100 and includes a plurality of hooks extending downward for hanging the strip product 300. The suspension assembly 200 and the support assembly 100 together form a receiving space, and the hooks are located within the receiving space.

[0038] In this embodiment, the support component 100 can be installed inside the vapor deposition furnace, and the suspension component 200 is installed at the top of the support component 100 and surrounds the support component 100, thereby forming an accommodating space below the suspension component 200 and inside the support component 100.

[0039] The hook of the suspension assembly 200 is located in the receiving space, and the strip product 300 to be processed can be hung in the receiving space. There is a certain gap between the bottom of the strip product 300 and the bottom 420 of the vapor deposition furnace.

[0040] In this structure, vapor deposition coating is applied to the strip product 300. Since the strip products 300 are all vertically suspended and each strip product 300 is parallel to the airflow direction, the coating on the front and back of the strip product 300 can be made relatively uniform.

[0041] Furthermore, in this embodiment, the strip product 300 is mounted in the vapor deposition furnace for processing, eliminating the need for a support structure on the strip product 300. This avoids the phenomenon that the strip product 300 cannot form a coating in the contact area due to contact with the support structure below, thereby improving the coating processing effect of the strip product 300.

[0042] Furthermore, since the strip product 300 in this embodiment is set by hanging, the strip product 300 is in a hanging state due to its own weight, and there is no other force in the horizontal direction. This can avoid the product from deforming due to uneven force on different parts under the impact of airflow and its own weight.

[0043] In this embodiment, the suspension assembly 200 further includes a mounting frame 210 and a suspension member 220. The mounting frame 210 has a hollow structure and is disposed at one end of the support assembly 100 located at the top of the receiving space and is detachably connected to the support assembly 100. The suspension member 220 is detachably disposed on the mounting frame 210, and multiple hooks are spaced horizontally on the suspension member 220.

[0044] The mounting bracket 210 and the detachable suspension component 220 combine to form a hanging structure. The hooks of the hanging structure are all located in the receiving space and are used to hang the strip product 300. The carbon source gas can enter the receiving space from the bottom and flow into the mounting bracket 210. The hollow structure of the mounting bracket 210 can form a flow channel for the carbon source gas, preventing the gas from forming local eddies in the receiving space at the bottom of the mounting bracket 210, and ensuring the uniform diffusion of the carbon source gas in the suspension area.

[0045] Among them, the horizontally spaced hooks allow multiple strip products 300 to be spatially distributed, reducing gas flow interference between adjacent products. At the same time, the detachable structure makes it easy to adjust the spacing and number of hooks according to the product width and process requirements.

[0046] In this embodiment, the mounting bracket 210 is provided with an overlap groove 211. The overlap groove 211 is adapted to the end of the suspension member 220, and both ends of the suspension member 220 are provided in the overlap groove 211.

[0047] The overlap groove 211 is adapted to the end of the suspension member 220 so that the end of the suspension member 220 can be inserted into the overlap groove 211, ensuring quick positioning and stable fixation of the suspension member 220 on the mounting bracket 210, avoiding displacement of the suspension member 220 due to vibration or airflow impact during the vapor deposition process, and ensuring the suspension stability of the strip product 300 in high temperature environment.

[0048] The suspension component 220 and the mounting bracket 210 form a snap-fit ​​structure through the mounting groove, simplifying the assembly and disassembly process of the suspension component 220. Reliable connection can be achieved without additional fasteners, improving tooling maintenance efficiency. Furthermore, the standardized size design of the overlapping groove 211 is compatible with suspension components 220 of different specifications. By replacing the suspension component 220 with one that matches the groove depth and width, it can flexibly adapt to the process parameter requirements of various strip products 300.

[0049] In this embodiment, the mounting bracket 210 is a mounting ring. There are multiple overlapping grooves 211, which are spaced apart along the same direction on the mounting ring. There are multiple hanging members 220, which are arranged one-to-one with the multiple overlapping grooves 211.

[0050] Specifically, in this embodiment, the mounting bracket 210 is a circular ring mounting ring, and multiple overlapping grooves 211 are spaced apart on the surface of the mounting ring in the same direction. The extending direction of the overlapping grooves 211 is the same as the extending direction of the suspension member 220 and the arrangement direction of multiple hooks on the same suspension member 220, and the spacing between each hook on the same suspension member 220 is the same.

[0051] In this structure, in this embodiment, multiple hooks are evenly and spaced out in the mounting ring and extend into the accommodating space. The hollow structure of the mounting ring can ensure that the airflow discharged from the bottom 420 of the vapor deposition furnace into the accommodating space is discharged smoothly, avoiding the existence of airflow dead zones in the accommodating space.

[0052] Furthermore, this structure can make full use of the space inside the vapor deposition furnace, resulting in a larger processing volume, reduced processing costs, and improved processing efficiency.

[0053] In this embodiment, the hook has an extension 221 and a hanging part 222. One end of the extension 221 is connected to the suspension member 220, and the other end extends into the receiving space. The hanging part 222 is provided at the end of the extension 221 away from the suspension member 220 and extends horizontally to form two hooks for hanging the strap-shaped product 300 at both ends in the horizontal direction.

[0054] Specifically, in this embodiment, the extension 221 and the horizontal hanging part 222 form a double-hook structure. The vertical extension of the extension 221 ensures that the strip product 300 remains parallel to the carbon source gas flow direction when suspended. The hooks formed by the horizontal extension of the hanging part 222 create symmetrical force points on both sides, allowing the strip product 300 to bear weight evenly at both ends, eliminating the risk of product distortion caused by single-point suspension. The double-hook structure allows two strip products 300 to be suspended simultaneously on the same hook, increasing the number of products processed at one time and thus improving processing efficiency.

[0055] Furthermore, the slender design of the extension 221 reduces obstruction to airflow, allowing the carbon source gas to fully envelop the front and back of the product in the vertical direction. Combined with the unobstructed suspension of the horizontal hook, this ensures the contact surface between the product and the support strip, improving the integrity and consistency of the coating formed.

[0056] In this embodiment, the support assembly 100 includes support bars. There are multiple support bars, which are spaced apart circumferentially along the mounting frame 210.

[0057] Specifically, in this embodiment, multiple circumferentially spaced support bars constitute a support structure. After the multiple support bars are connected to the mounting frame 210, they form a multi-point uniform force-bearing structure, which effectively disperses the overall load of the suspension assembly 200 and the strip product 300, and prevents the support assembly 100 from deforming due to local stress concentration.

[0058] In this embodiment, the top end of the support bar is detachably connected to the mounting bracket 210 via carbon bolts 110.

[0059] Specifically, in this embodiment, the support bar and the mounting bracket 210 are detachably connected by carbon carbon bolts 110. By utilizing the high-temperature creep resistance and chemical inertness of carbon carbon materials, the connection can maintain structural rigidity in high-temperature environments above 600°C, avoiding the risk of thread seizing or breakage caused by the difference in thermal expansion coefficients of traditional metal bolts.

[0060] In this embodiment, the support assembly 100 further includes arc-shaped locking members. The arc-shaped locking members are located outside the accommodating space and are detachably connected at both ends to two adjacent support bars. There are multiple arc-shaped locking members, which are respectively disposed between multiple support bars.

[0061] In this embodiment, the two ends of the arc-shaped locking member are respectively connected to two adjacent support bars. Multiple arc-shaped locking members connect all the support bars to form an integral structure, forming a closed-loop structure in the circumference of the strip product coating tooling, so that the multiple dispersed support bars are connected into an integral structure.

[0062] Furthermore, in this embodiment, the radius of curvature of the arc-shaped locking member matches the overall contour of the mounting ring, and the diameter of the mounting ring and the arc-shaped locking member must be smaller than the bottom diameter of the vapor deposition furnace to avoid the mounting ring being too large to be placed inside the vapor deposition furnace.

[0063] The vapor deposition apparatus for the strip product 300 provided in this embodiment includes a furnace body 400 and a strip product coating fixture. The furnace body 400 includes a furnace wall 410 and a furnace bottom 420, which together form a processing space. The strip product coating fixture is disposed within the processing space, and the bottom end of the support component 100 of the strip product coating fixture is located at the furnace bottom 420.

[0064] In this embodiment, the furnace wall 410 is located above and connected to the furnace bottom 420. The furnace wall 410 and the furnace bottom 420 enclose each other along the circumference to form a processing space. Multiple air holes are provided at intervals on the furnace bottom 420 so that the carbon source gas flow can enter the processing space through the air holes.

[0065] The strip product coating fixture provided in this embodiment is used to perform vapor deposition processing after the strip product 300 is hung in the processing space. The strip product 300 is vertically suspended in the strip product coating fixture and parallel to the airflow direction, which makes the coating on the front and back of the strip product 300 more uniform. In addition, no support structure is provided at the bottom of the strip product 300, which avoids the phenomenon that the strip product 300 cannot form a coating in the contact area due to contact with the support structure below, thereby improving the coating processing effect of the strip product 300.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A coating fixture for strip products, characterized in that, Applications include: vapor phase coating processes A support assembly (100) extends vertically and has its bottom end for mounting into a vapor deposition furnace; A suspension assembly (200) is disposed at the top of the support assembly (100), the suspension assembly (200) including a plurality of hooks extending downward for hanging strip products; The suspension assembly (200) and the support assembly (100) together form a receiving space, and the hook is located within the receiving space.

2. The strip product coating fixture according to claim 1, characterized in that, The suspension assembly (200) also includes: The mounting bracket (210) is a hollow structure. The mounting bracket (210) is located at the top end of the support assembly (100) in the accommodating space and is detachably connected to the support assembly (100). The suspension member (220) is detachably mounted on the mounting bracket (210), and a plurality of the hooks are spaced apart in the horizontal direction on the suspension member (220).

3. The strip product coating fixture according to claim 2, characterized in that, The mounting bracket (210) is provided with: The overlapping groove (211) is adapted to the end of the suspension member (220), and both ends of the suspension member (220) are provided in the overlapping groove (211).

4. The strip product coating fixture according to claim 3, characterized in that, The mounting bracket (210) is a mounting ring; There are multiple overlapping grooves (211), and the multiple overlapping grooves (211) are spaced apart on the mounting ring in the same direction; There are multiple suspension members (220), and each of the multiple suspension members (220) is provided in a one-to-one correspondence with the multiple overlapping grooves (211).

5. The strip product coating fixture according to claim 2, characterized in that, The hook has: The extension (221) is connected at one end to the suspension member (220) and at the other end extends into the receiving space; The hanging part (222) is provided at one end of the extension (221) away from the suspension member (220) and extends horizontally to form two hooks for hanging the strip product at both ends in the horizontal direction.

6. The strip product coating fixture according to claim 2, characterized in that, The support component (100) includes: There are multiple support bars, which are spaced apart circumferentially along the mounting frame (210).

7. The strip product coating fixture according to claim 6, characterized in that, The top end of the support bar is detachably connected to the mounting bracket (210) by a carbon bolt (110).

8. The strip product coating fixture according to claim 6, characterized in that, The support component (100) also includes: An arc-shaped locking element is provided outside the accommodating space and its two ends are detachably connected to two adjacent support bars. There are multiple arc-shaped locking elements, and multiple arc-shaped locking elements are respectively provided between multiple support bars.

9. A vapor deposition apparatus for strip-shaped products, characterized in that, Includes a furnace body (400) and a strip product coating fixture as described in any one of claims 1-8; The furnace body (400) includes a furnace wall (410) and a furnace bottom (420), and the furnace wall (410) and the furnace bottom (420) together form a processing space; The strip product coating fixture is located within the processing space, and the bottom end of the support component (100) of the strip product coating fixture is located at the furnace bottom (420).

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