Oxidation mechanism for avoiding blackening change of inner hole wall of long aluminum alloy profile

Abstract

The utility model discloses an oxidation mechanism for preventing the inner hole wall of a long aluminum alloy profile from blackening. The oxidation mechanism comprises a cathode rod and an insulation assembly, more than two insulating components are arranged on the cathode rod, and the insulating components are distributed at intervals along the axial direction of the cathode rod; the insulating assembly comprises an insulating sleeve and an elastic supporting piece, and the elastic supporting piece comprises a supporting sleeve and more than three elastic supporting legs; the insulating sleeve is fixed on the cathode rod in a sleeving manner, the supporting sleeve is arranged on the insulating sleeve in a sleeving manner, the elastic supporting legs are distributed on the periphery of the supporting sleeve in a surrounding manner, one end of each elastic supporting leg is connected with the supporting sleeve, and the movable end of the other end of each elastic supporting leg extends outwards in an inclined manner; and the axes of the elastic supporting feet and the cathode rod are arranged in a mutually inclined manner. When the oxidation mechanism is used, the oxidation mechanism can directly extend into the inner cavity of the aluminum profile, and each elastic supporting leg has elasticity and can automatically deform to abut against the inner wall of the inner cavity of the aluminum profile, so that the insulation between the cathode rod and the aluminum profile is ensured, and the surface of the inner cavity is conveniently oxidized by matching with an electrolytic tank and an anode.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum profiles, in particular to an oxidation mechanism for preventing the inner hole wall of long aluminum alloy profiles from turning black and changing. Background Technique

[0002] The process of using an aluminum or aluminum alloy product as an anode, placing it in an electrolyte solution for electrification treatment, and forming an aluminum oxide film on its surface through electrolysis is called the anodic oxidation process. After anodic oxidation treatment, an oxide film with a thickness of several micrometers to several hundred micrometers can be formed on the aluminum surface. Compared with the oxide film formed on the aluminum alloy surface under natural conditions, the corrosion resistance, wear resistance, and decoration of this anodically oxidized oxide film have been significantly improved and enhanced. Therefore, the anodic oxidation process of aluminum alloy has become an important process in the production process of aluminum alloy profiles.

[0003] In the past, in the conventional anodic oxidation method, due to the long length of the long aluminum alloy profile, it was basically only possible to anodize the outer surface of the long aluminum alloy profile, and it was impossible to anodize the inside of the long aluminum alloy profile, which would cause the inner surface to turn black and affect the internal corrosion resistance.

[0004] There is currently a method for anodic oxidation and electrophoretic coating inside the cavity of an aluminum alloy profile disclosed in Chinese Patent Publication No. CN114438567A. In this solution, an aluminum wire serving as an auxiliary cathode is inserted into each cavity of the aluminum alloy profile, and an insulating spacer for preventing contact between the aluminum wire and the aluminum alloy profile is provided every 40 - 60 cm on the aluminum wire. Thus, by adding an auxiliary cathode inside the cavity of the aluminum profile, an electric field with the same electric field strength as the outer surface of the profile is formed inside the cavity, promoting the normal progress of the electrochemical film formation process and forming a normal oxide film. However, although this solution provides multiple insulating spacers, if the aluminum wire is accidentally bent, it will still come into contact with the inner cavity and cause a short circuit. Content of the Utility Model

[0005] The purpose of the utility model is to provide an oxidation mechanism for preventing the inner hole wall of long aluminum alloy profiles from turning black and changing, which can solve the above defects, can effectively anodize the inner cavity of long aluminum alloy profiles, and has the advantages of convenient use, convenient maintenance, and strong versatility.

[0006] In order to achieve the above purpose, the solution of the utility model is:

[0007] An oxidation mechanism for preventing the inner hole wall of long aluminum alloy profiles from turning black and changing, comprising a cathode rod and an insulating component;

[0008] Two or more insulating components are provided on the cathode rod, and each insulating component is distributed at intervals along the axial direction of the cathode rod;

[0009] The insulation assembly includes an insulating sleeve and an elastic support. The elastic support includes a support sleeve and more than three elastic feet.

[0010] The insulating sleeve is sleeved and fixed on the cathode rod. The support sleeve is sleeved on the insulating sleeve. Each elastic foot is distributed around the outer periphery of the support sleeve. One end of the elastic foot is connected to the support sleeve, and the other movable end of the elastic foot extends obliquely outwards. And there is an inclined setting between the axis of the elastic foot and the axis of the cathode rod.

[0011] Furthermore, the insulation assemblies are provided at least at both ends of the cathode rod.

[0012] Furthermore, the movable ends of the elastic feet of the insulation assemblies at both ends of the cathode rod are arranged opposite to each other.

[0013] Furthermore, the elastic support further includes a support plate. The middle of the support plate has a through hole of the support plate. The support sleeve is connected to the support plate, and the sleeve hole of the support sleeve is aligned with the through hole of the support plate. There are four elastic feet, which are respectively connected to the four corners of one side of the support plate and are indirectly connected to the support sleeve.

[0014] Furthermore, on both sides of the through hole of the support plate on this side of the support plate, an elastic rib is provided respectively. The middle of the elastic rib is abutted and fixed on the side of the support plate. The two sides of the elastic rib are respectively bent inwards relatively to form the two elastic feet.

[0015] Furthermore, a notch is provided in the middle of the movable end of the elastic foot.

[0016] Furthermore, a connection seat is provided on the side wall of the support sleeve. A threaded through hole is provided on the connection seat. The threaded through hole is radially communicated with the sleeve hole of the support sleeve. A locking screw is provided at the threaded through hole. This locking screw is used to lock and fix the support sleeve and the insulating sleeve.

[0017] After adopting the above technical solution, during use, the oxidation mechanism can be directly inserted into the inner cavity of the aluminum profile. Each elastic foot has elasticity and will automatically deform and abut against the inner wall of the inner cavity of the aluminum profile. That is to say, the cathode rod can always maintain a distance from the inner wall of the cavity through the arrangement of each elastic foot, ensuring insulation between the cathode rod and the aluminum profile, so as to facilitate and cooperate with the electrolytic cell and the anode to oxidize the inner cavity surface.

[0018] Moreover, since each elastic support foot is inclined with respect to the cathode rod, the elasticity of each elastic support foot is liable to change. Thus, when the structural shape of the aluminum profile changes, the corresponding inner cavity dimensions and shape may also change. However, this elastic support foot can automatically undergo elastic deformation along with the shape of the inner cavity, for example, further contraction, but can maintain continuous abutment against the inner wall of the inner cavity, ensuring insulation between the cathode rod and the aluminum alloy. That is to say, the oxidation mechanism of the present utility model can be applied to aluminum alloys of different shapes and sizes, has a simple structure, is convenient to use, and has high versatility. Brief Description of the Drawings

[0019] Figure 1 is a perspective view of an embodiment of the present utility model;

[0020] Figure 2 is an exploded view of an embodiment of the present utility model;

[0021] Figure 3 is a schematic diagram of inserting an aluminum profile in an embodiment of the present utility model;

[0022] Figure 4 is Figure 3 a side view of

[0023] Figure 5 is Figure 3 a cross-sectional view of

[0024] Figure 6 is a schematic diagram of the cooperation between an embodiment of the present utility model and a special-shaped aluminum profile;

[0025] Figure 7 is a schematic diagram of the cooperation between an embodiment of the present utility model and another special-shaped aluminum profile.

[0026] Reference Numeral Explanation: Oxidation mechanism 10, Cathode rod 1, Insulation assembly 2, Insulation sleeve 21, Elastic support member 22, Support sleeve 23, Sleeve hole 231, Connection seat 232, Threaded through hole 2321, Locking screw 234, Elastic rib 24, Elastic support foot 241, Notch 2411, Middle part of elastic rib 242, Support plate 25, Support plate through hole 251, Aluminum profile 20, Inner cavity 201. Detailed Embodiment

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Generally, the components of the embodiments of the present application described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0028] As Figures 1 to 5As shown, an oxidation mechanism 10 for preventing the inner hole wall of aluminum alloy long profiles from turning black and changing includes a cathode rod 1 and an insulating assembly 2.

[0029] As Figure 1 and Figure 3 shown, two or more insulating assemblies 2 are provided on the cathode rod 1, and the insulating assemblies 2 are distributed at intervals along the axial direction of the cathode rod 1; the cathode rod 1 can be set according to the length of the aluminum profile 20, especially the aluminum alloy long profile, and can be close to or exceed the length of the aluminum alloy long profile, so as to be inserted into the inner cavity 201 of the aluminum profile 20 such as the aluminum alloy long profile, and cooperate with the electrolytic cell and the anode to oxidize the surface of the inner cavity 201.

[0030] The insulating assembly 2 is used to insulate and separate the cathode rod 1 and the aluminum profile 20 to prevent short circuit caused by their contact.

[0031] Specifically, referring to Figure 2 the figure, the insulating assembly 2 includes an insulating sleeve 21 and an elastic support 22, and the elastic support 22 includes a support sleeve 23 and more than three elastic feet 241; in this embodiment, four elastic feet 241 are taken as an example.

[0032] The insulating sleeve 21 is sleeved and fixed on the cathode rod 1, the support sleeve 23 is sleeved on the insulating sleeve 21, and the elastic feet 241 are distributed around the outer periphery of the support sleeve 23. One end of the elastic foot 241 is connected to the support sleeve 23, and the other end of the elastic foot 241 extends obliquely outwards, and the elastic foot 241 and the axis of the cathode rod 1 are arranged obliquely to each other.

[0033] Thus, when in use, as Figure 4 and Figure 5 shown, the oxidation mechanism 10 can be directly inserted into the inner cavity 201 of the aluminum profile 20. Each elastic foot 241 has elasticity and will automatically deform and abut against the inner wall of the inner cavity 201 of the aluminum profile 20. That is to say, the cathode rod 1 can always maintain a distance from the inner wall of the inner cavity 201 through the arrangement of each elastic foot 241. And since each elastic foot 241 is arranged obliquely with respect to the cathode rod 1, the elasticity of each elastic foot 241 is easy to change. Thus, referring to Figure 6 and Figure 7 the figure, when the structural shape of the aluminum profile 20 changes, the corresponding size and shape of the inner cavity 201 may also change, but the elastic foot 241 can automatically elastically deform along with the shape of the inner cavity 201, for example, further shrink, but can always keep abutting against the inner wall of the inner cavity 201 to ensure the insulation between the cathode rod 1 and the aluminum alloy. That is to say, the oxidation mechanism 10 of the present utility model can be applied to aluminum alloys of different shapes and sizes, with simple structure, convenient use and high versatility.

[0034] AsFigure 1 In this embodiment, the insulating assemblies 2 are provided at least at both ends of the cathode rod 1 to maintain the balance of both ends of the cathode rod 1 and facilitate the manipulation of inserting the cathode rod 1 into the inner cavity 201 of the aluminum profile 20.

[0035] Moreover, in this embodiment, the movable ends of the elastic feet 241 of the insulating assemblies 2 at both ends of the cathode rod 1 are arranged opposite to each other, but this is not limited thereto.

[0036] Such as Figure 1 and Figure 2 In this embodiment, the elastic support member 22 further includes a support plate 25, and a support plate through-hole 251 is provided in the middle of the support plate 25; the support sleeve 23 is connected to the support plate 25, and the sleeve hole 231 of the support sleeve 23 is aligned with the support plate through-hole 251; there are four elastic feet 241, which are respectively connected to four corners of one side of the support plate 25 and are indirectly connected to the support sleeve 23. Thus, since the cathode rod 1 passes through the support plate through-hole 251, that is, the width of the support plate 25 must be greater than the diameter of the cathode rod 1, therefore, the support plate 25 also has the function of assisting in isolating between the cathode rod 1 and the inner wall of the inner cavity 201.

[0037] In this embodiment, for the convenience of product manufacturing and to ensure the elasticity of the elastic feet 241, one elastic rib 24 is provided on each side of the support plate through-hole 251 on this side of the support plate 25. The middle 242 of the elastic rib abuts and is fixed to the side of the support plate 25, and both sides of the elastic rib 24 are bent inwards relatively to form the two elastic feet 241. Thus, by directly fixing the middle 242 of the elastic rib to the support plate 25 and bending both sides to form the elastic feet 241, the connection operation between the elastic feet 241 and the support plate 25 can be facilitated, and the reliability of the connection between the two can be ensured, and they are not easily separated or broken; and the elastic feet 241 are directly formed by bending the elastic rib 24, and can have better elastic performance.

[0038] Moreover, a notch 2411 can be provided in the middle of the movable end of the elastic foot 241. This can further increase the elasticity of the movable end of the elastic foot 241, facilitate entering and exiting the inner cavity 201, and improve the gripping force of the elastic foot 241 so that it tightly abuts against the inner cavity 201.

[0039] Such as Figure 2 As shown, a connection seat 232 can be provided on the side wall of the support sleeve 23, and a threaded through-hole 2321 is provided on the connection seat 232. The threaded through-hole 2321 is radially communicated with the sleeve hole 231 of the support sleeve 23; a locking screw 234 is provided at the threaded through-hole 2321, and this locking screw 234 is used to lock and fix the support sleeve 23 and the insulating sleeve 21. To facilitate the installation and disassembly operations between the elastic support member 22, the insulating sleeve 21 and the cathode rod 1.

[0040] The above are only the preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the idea of the present utility model belong to the protection scope of the present utility model. It should be noted that for those of ordinary skill in the art, equivalent changes and modifications made without departing from the principle of the present utility model should still fall within the protection scope of the present utility model. In the description of this application, the meanings of "a plurality of" and "several" are two or more, unless otherwise specifically defined.

[0041] In the description of the embodiments of this application, it should also be noted that unless otherwise clearly specified and limited, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows mutual communication; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0042] In addition, this application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

Claims

1. An oxidation mechanism for preventing the inner hole wall of an aluminum alloy long profile from turning black, characterized in that: including a cathode rod and an insulating assembly; The cathode rod is provided with more than two insulating components, and the insulating components are distributed at intervals along the axial direction of the cathode rod; The insulating assembly includes an insulating sleeve and an elastic support member, and the elastic support member includes a support sleeve and more than three elastic legs; The insulating sleeve is fixed on the cathode rod, and the supporting sleeve is sleeved on the insulating sleeve. Each elastic support foot is distributed around the outer circumference of the supporting sleeve, and one end of the elastic support foot is connected to the supporting sleeve, and the other end of the elastic support foot extends outward at an angle, and the axis of the elastic support foot and the cathode rod are arranged to be inclined to each other.

2. The oxidation mechanism for preventing the inner hole wall of the aluminum alloy long profile from turning black according to claim 1, characterized in that: At least two ends of the cathode rod are provided with the insulating assembly.

3. The oxidation mechanism for preventing the inner hole wall of the aluminum alloy long profile from turning black according to claim 2, characterized in that: The movable ends of the elastic legs of the insulating components at both ends of the cathode rod are arranged opposite to each other.

4. The oxidation mechanism for preventing the inner hole wall of the aluminum alloy long profile from turning black according to claim 1, characterized in that: The elastic support member also includes a support plate, which has a support plate through hole in the middle; the support sleeve is connected to the support plate, and the sleeve hole of the support sleeve is located in the support plate through hole; there are four elastic legs, which are respectively connected to the four corners of one side of the support plate, and are indirectly connected to the support sleeve.

5. The oxidation mechanism for preventing the inner hole wall of the aluminum alloy long profile from turning black according to claim 4, characterized in that: The side surface of the support plate is provided with an elastic rib on both sides of the support plate through hole, the middle of the elastic rib is fixed to the side surface of the support plate, and the two sides of the elastic rib are bent inwards relative to each other to form the two elastic legs.

6. An oxidation mechanism for preventing the inner hole wall of an aluminum alloy long profile from turning black according to claim 4 or 5, characterized in that: A notch is provided in the middle of the movable end of the elastic supporting foot.

7. An oxidation mechanism for preventing the inner hole wall of an aluminum alloy long profile from turning black according to any one of claims 1 to 5, characterized in that: A connecting seat is provided on the side wall of the supporting sleeve, and a threaded through hole is provided on the connecting seat, which is radially connected to the sleeve hole of the supporting sleeve; a locking screw is provided at the threaded through hole, and the locking screw is used to lock and fix the supporting sleeve and the insulating sleeve.

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