Cylindrical part inner hole positive polarization treatment clamp and method thereof

Abstract

The invention belongs to the technical field of cylindrical part inner hole positive polarization design, and particularly relates to a cylindrical part inner hole positive polarization treatment clamp which is simple in overall structure, has an adaptive function, can be suitable for anodizing treatment of inner holes of cylindrical parts of different lengths and thicknesses, and improves a clamping plate structure to solve the problem that the mobility of bath liquid in the inner holes is poor. The fixing of the cathode conducting rod is designed, the problems that manual fixing is difficult to last and accidents are likely to happen can be solved, the two hooks are designed to be hung on the anode conducting rod, the problem that the cylindrical part is likely to incline can be solved, and therefore the anodizing treatment effect on the inner hole of the cylindrical part can be guaranteed; the invention provides a cylindrical part inner hole positive polarization processing method which is implemented based on a cylindrical part inner hole positive polarization processing clamp.

Description

Technical Field

[0001] The present application belongs to the technical field of anodizing design for inner holes of cylindrical parts, and specifically relates to an anodizing fixture for inner holes of cylindrical parts and a method thereof. Background Art

[0002] In engineering construction, various aluminum cylindrical parts are often used. In order to avoid internal corrosion of water and air pipes, their inner holes are usually anodized.

[0003] Current fixtures for anodizing the inner bore of cylindrical components use clamps at both ends to secure the component, obscuring the large bore, resulting in poor fluidity of the bath solution within the bore. Furthermore, the cathode conductive rod is manually secured within the bore, making it difficult to maintain consistent operation and prone to errors. Furthermore, the fixture is simply secured to the anode conductive rod with a hook, which can easily tilt and make it difficult to guarantee anodizing results. These issues are particularly acute in slender cylindrical components with smaller inner diameters. This application is therefore the subject of this research. Summary of the Invention

[0004] The purpose of the present application is to provide a fixture for anodizing the inner hole of a cylindrical part and a method thereof, so as to overcome or alleviate at least one aspect of the known technical defects.

[0005] The technical solution of this application is:

[0006] On the one hand, a fixture for anodizing the inner hole of a cylindrical part is provided, comprising an upper clamping plate, a lower clamping plate, an anode connecting rod, an anode hook, a cathode conductive rod, an upper insulating bushing, and a lower insulating bushing;

[0007] The upper clamping plate and the lower clamping plate are arranged above and below the cylindrical member, and the two ends are connected by long bolts to clamp the cylindrical member from the upper and lower ends;

[0008] The upper and lower clamping plates are formed with mounting rings, which are coaxial with the cylindrical member and have an outer diameter smaller than the inner diameter of the cylindrical member;

[0009] Thin support arms are formed between the ends of the upper and lower splints and the mounting ring. The upper and lower splints are supported against the ends of the cylindrical member with the thin support arms, and the width of the thin support arms is smaller than the outer diameter of the mounting ring.

[0010] There are two anode connecting rods, the lower ends of which are connected to both ends of the upper clamping plate;

[0011] There are two anode hooks, connected to the upper ends of the two anode connecting rods, used to hook onto the anode conductive rods;

[0012] The lower end of the cathode conductive rod passes through the mounting ring on the upper clamping plate and extends into the mounting ring on the lower clamping plate, and the upper end is used to connect to the cathode conductive rod;

[0013] The upper insulating bushing and the lower insulating bushing are sleeved on the cathode conductive rod and arranged in the mounting rings on the upper clamping plate and the lower clamping plate.

[0014] According to at least one embodiment of the present application, in the above-mentioned fixture for anodizing the inner hole of a cylindrical member, the upper clamping plate, the lower clamping plate, and the long bolt are made of hard aluminum material;

[0015] The head of the long bolt is located below the lower clamping plate, and two locking nuts are screwed onto the screw rod, which clamp the upper clamping plate from the upper and lower sides;

[0016] The mounting ring is located in the middle of the upper and lower splints. The thin arm is a rectangular structure. The length of the thin arm exceeds the outer diameter range of the cylindrical part. The outer side of the thin arm is a rectangular structure with a larger width and a longer length, which constitutes the two ends of the upper and lower splints. The width change of the upper and lower splints is transitioned by an arc.

[0017] According to at least one embodiment of the present application, in the above-mentioned fixture for anodizing the inner hole of a cylindrical member, the anode connecting rod is made of hard aluminum material;

[0018] The lower end of the anode connecting rod is a step structure. The small end of the step structure is threadedly connected to the upper clamping plate and is threadedly connected with a locking nut. The locking nut cooperates with the step part of the step structure to clamp the upper clamping plate.

[0019] According to at least one embodiment of the present application, in the above-mentioned fixture for anodizing the inner hole of a cylindrical member, the anode hook is made of copper;

[0020] The upper end of the anode connecting rod has a bayonet, the lower end of the anode hook is inserted into the bayonet, and is connected to the anode connecting rod with a bolt fastener;

[0021] The upper end of the anode connecting rod is provided with multiple bolt holes, each bolt hole is spaced 50 mm apart in the height direction, and the wall surface of the upper end of the anode connecting rod with the bolt holes is milled flat to a plane;

[0022] The lower end of the anode hook is a long straight section, and the thickness of the long straight section is 0.1 mm less than the width of the bayonet.

[0023] According to at least one embodiment of the present application, in the above-mentioned fixture for anodizing the inner hole of a cylindrical member, the cathode conductive rod is a lead rod;

[0024] The upper end of the cathode conductive rod is connected to the cathode conductive rod through a copper wire, and the upper end of the cathode conductive rod is provided with a wiring hole for connecting the copper wire.

[0025] According to at least one embodiment of the present application, in the above-mentioned cylindrical part inner hole anodizing fixture, the upper insulating bushing and the lower insulating bushing are interference-fitted into the mounting rings on the upper clamping plate and the lower clamping plate, and the outward flange formed at the upper end is pressed onto the upper clamping plate and the lower clamping plate, and the lower end of the lower insulating bushing is sealed to support the lower end of the cathode conductive rod.

[0026] On the other hand, a method for anodizing the inner hole of a cylindrical part is provided, which is implemented based on the above-mentioned fixture for anodizing the inner hole of a cylindrical part, comprising:

[0027] Step 1: Clean and dry the cylindrical parts;

[0028] Step 2: Use long bolts to clamp the cylindrical piece from the upper and lower ends with the upper and lower clamping plates;

[0029] Step 3: Install the anode connecting rod to the upper clamping plate and connect the anode hook;

[0030] Step 4: Assemble the upper insulating bushing and the lower insulating bushing onto the upper and lower clamping plates, and install the cathode conductive rod;

[0031] Step 5: Hang the anode hook onto the anode conductive rod so that the cylindrical part reaches the specified depth of the tank liquid, and connect the cathode conductive rod to the cathode conductive rod;

[0032] Step 6: Apply power to anodize the inner hole of the cylindrical part;

[0033] Step 7: Turn off the power, disassemble the anodizing fixture for the inner hole of the cylindrical part, remove the cylindrical part, clean it, and complete the anodizing treatment of the cylindrical part.

[0034] This application has at least the following beneficial technical effects:

[0035] Provided is a fixture for anodizing the inner holes of cylindrical parts. The fixture has a simple overall structure and an adaptability function, and is suitable for anodizing the inner holes of cylindrical parts of different lengths and thicknesses. In order to address the problem of poor fluidity of the tank liquid in the inner hole, the clamping plate structure is improved, and the fixation of the cathode conductive rod is designed to avoid the problem that manual fixation is difficult to last and prone to accidents. The fixture is designed to be suspended on the anode conductive rod with two hooks, which can avoid the problem that the cylindrical part is prone to tilting, thereby ensuring the effect of anodizing the inner hole of the cylindrical part. In addition, the anodizing of the inner hole of the cylindrical part is simple to operate and can be performed by one person, so that the anodizing of the inner hole of the cylindrical part can be completed quickly and in batches in a standard manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 Schematic diagram of an anodizing fixture for an inner hole of a cylindrical part provided in an embodiment of the present application;

[0037] Figure 2 is a schematic diagram of an upper splint provided in an embodiment of the present application;

[0038] Figure 3 is a schematic diagram of a lower splint provided in an embodiment of the present application;

[0039] Figure 4 is a schematic diagram of an anode connecting rod provided in an embodiment of the present application;

[0040] Figure 5 is a schematic diagram of an anode hook provided in an embodiment of the present application;

[0041] Figure 6 is a schematic diagram of an upper insulating bushing provided in an embodiment of the present application;

[0042] Figure 7 is a schematic diagram of a lower insulating bushing provided in an embodiment of the present application;

[0043] in:

[0044] 1-upper clamping plate; 2-lower clamping plate; 3-anode connecting rod; 4-anode hook; 5-cathode conductive rod; 6-upper insulating bushing; 7-lower insulating bushing; 8-cylindrical part; 9-long bolt.

[0045] In order to better illustrate this embodiment, some contents of the drawings may be omitted, enlarged or reduced, which is only used for illustrative purposes and should not be construed as limiting the present application. DETAILED DESCRIPTION

[0046] To make the technical solution and its advantages of this application more clear, the technical solution of this application will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described here are only some of the embodiments of this application and are only used to explain this application, not to limit this application. It should be noted that for ease of description, only the parts relevant to this application are shown in the accompanying drawings, and other relevant parts can refer to the general design.

[0047] In addition, unless otherwise defined, technical or scientific terms used in the description of this application shall have the ordinary meanings understood by those skilled in the art to which this application belongs. The term "include" as used in the description of this application means that the concepts preceding the term include the concepts listed after the term and their equivalents, without excluding other related concepts.

[0048] In addition, the words used in the description of this application to indicate orientation are only used to indicate relative directions or positional relationships. When the absolute position of the object being described changes, its relative positional relationship may also change accordingly. It should also be noted that, unless otherwise clearly specified and limited, the words "installation", "connection" and similar words used in the description of this application should be understood in a broad sense. For example, the connection can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand their specific meanings in this application based on the specific circumstances.

[0049] A fixture for anodizing the inner hole of a cylindrical part, such as Figure 1 As shown, it includes an upper clamping plate 1, a lower clamping plate 2, an anode connecting rod 3, an anode hook 4, a cathode conductive rod 5, an upper insulating bushing 6, and a lower insulating bushing 7.

[0050] The upper and lower clamping plates 1 and 2 are long plate structures, which are arranged above and below the cylindrical member 8. The two ends are connected by long bolts 9 to clamp the cylindrical member 8 from the upper and lower ends. Long bolts 9 of different lengths can be selected to adapt to cylindrical members 8 of different lengths.

[0051] The upper splint 1, the lower splint 2 and the long bolt 9 are made of hard aluminum material. The head of the long bolt 9 is located below the lower splint 2. Two locking nuts are screwed on the screw. The two locking nuts clamp the upper splint 1 from the upper and lower sides. The locking nuts can be used to control the distance between the upper splint 1 and the lower splint 2, adapt to cylindrical parts 8 of different lengths, and maintain moderate clamping of the cylindrical part 8.

[0052] Mounting rings are formed on the upper clamping plate 1 and the lower clamping plate 2. The mounting rings are coaxial with the cylindrical member 8, and the outer diameter of the mounting rings is smaller than the inner diameter of the cylindrical member 8. The mounting rings are designed to be as small as possible.

[0053] Thin support arms are formed between the ends of the upper splint 1 and the lower splint 2 and the mounting ring. The upper splint 1 and the lower splint 2 are rested against the two ends of the cylindrical member 8 with the thin support arms. The width of the thin support arms is smaller than the outer diameter of the mounting ring and is designed to be as small as possible to reduce the obstruction of the two ends of the cylindrical member 8, thereby ensuring the fluidity of the tank liquid in the inner hole during anodizing.

[0054] The mounting ring can be specifically designed to be located in the middle of the upper and lower splints 1 and 2, the thin arm is a rectangular structure, the length of the thin arm exceeds the outer diameter range of the cylindrical member 8, the outer side of the thin arm is a rectangular structure with a larger width and a longer length, constituting the ends of the upper and lower splints 1 and 2, and the width change of the upper and lower splints 1 and 2 is transitioned by an arc, such as Figure 2-3 shown.

[0055] Anode connecting rod 3 Figure 4As shown, it is made of hard aluminum material, has two, the lower ends of which are connected to the two ends of the upper splint 1 and are located at the part where the width of the upper splint 1 is larger.

[0056] The specific design is that the lower end of the anode connecting rod 3 is a step structure, the small end of the step structure is threadedly connected to the upper clamping plate 1, and is threadedly connected with a locking nut, which cooperates with the step part of the step structure to clamp the upper clamping plate 1.

[0057] Anode hook 4 as Figure 5 As shown, it is made of easily conductive copper material, and there are two of them, connected to the upper ends of the two anode connecting rods 3, used to hook onto the anode conductive rods, so that the anodizing treatment fixture for the inner hole of the cylindrical part and its cylindrical part 8 can remain stable in the tank liquid to avoid tilting.

[0058] In a specific design, the upper end of the anode connecting rod 3 has a bayonet, the lower end of the anode hook 4 is inserted into the bayonet, and is connected to the anode connecting rod 3 by a bolt fastener.

[0059] The upper end of the anode connecting rod 3 has multiple bolt holes, and each bolt hole is spaced 50 mm apart in the height direction. When in use, bolt holes at different heights can be selected according to the depth to which the cylindrical member 8 needs to be immersed in the tank liquid, and connected to the anode hook 4 using bolt fasteners. The wall position with the bolt holes at the upper end of the anode connecting rod 3 can be milled flat to facilitate the installation and tightening of the bolt fasteners.

[0060] The lower end of the anode hook 4 is a long straight section, and the thickness of the long straight section is less than the width of the bayonet 0.1mm.

[0061] The cathode conductive rod 5 is a lead rod, the lower end of which passes through the mounting ring on the upper clamping plate 1 and extends into the mounting ring on the lower clamping plate 2, and the upper end is used to be connected to the cathode conductive rod.

[0062] It can be specifically designed that the upper end of the cathode conductive rod 5 is connected to the cathode conductive rod through a copper wire, and the upper end of the cathode conductive rod 5 is designed to have a wiring hole for connecting the copper wire.

[0063] The upper insulating bushing 6 and the lower insulating bushing 7 are as shown in FIG. Figure 6-7 As shown, it is made of fluoroplastic, sleeved on the cathode conductive rod 5, and set in the mounting ring on the upper clamping plate 1 and the lower clamping plate 2 to prevent direct contact and conduction between the cathode conductive rod 5 and the upper clamping plate 1 and the lower clamping plate 2.

[0064] The specific design is that the upper insulating bushing 6 and the lower insulating bushing 7 are interference-set in the mounting rings on the upper clamping plate 1 and the lower clamping plate 2, and the outward flange formed at the upper end is pressed above the upper clamping plate 1 and the lower clamping plate 2, and the lower end of the lower insulating bushing 7 is sealed to support the lower end of the cathode conductive rod 5.

[0065] In the anodizing fixture for the inner hole of a cylindrical part disclosed in the above embodiment, the upper clamping plate 1, the lower clamping plate 2, the anode connecting rod 3, the anode hook 4 and the anode conductive rod constitute an anode for anodizing and conducting the inner hole of the cylindrical part, and the cathode conductive rod 5 constitutes a cathode for anodizing and conducting the inner hole of the cylindrical part, and the insulating bushing 6 and the lower insulating bushing 7 are used to prevent direct contact and conduction between the anode and the cathode.

[0066] Using the fixture for anodizing the inner hole of a cylindrical member disclosed in the above embodiment, anodizing the cylindrical member can be performed by referring to the following steps:

[0067] Step 1: Clean and dry the cylindrical member 8.

[0068] Step 2: Use long bolts 9 to clamp the cylindrical part 8 from the upper and lower ends using the upper clamping plate 2 and the lower clamping plate 10.

[0069] Step 3: Install the anode connecting rod 3 onto the upper clamping plate 2 and connect the anode hook 4.

[0070] Step 4: Assemble the upper insulating bushing 6 and the lower insulating bushing 7 onto the upper clamping plate 2 and the lower clamping plate 10 , and install the cathode conductive rod 5 .

[0071] Step 5: Hang the anode hook 4 onto the anode conductive rod, so that the cylindrical member 8 reaches the specified depth position of the tank liquid, and connect the cathode conductive rod 5 to the cathode conductive rod.

[0072] Step 6: Apply power to anodize the inner hole of the cylindrical member 8.

[0073] Step 7: Turn off the power, disassemble the anodizing fixture for the inner hole of the cylindrical part, remove the cylindrical part 8, clean it, and complete the anodizing treatment of the cylindrical part 8.

[0074] The anodizing fixture for the inner hole of a cylindrical part disclosed in the above embodiment has a simple overall structure and an adaptability function. It can be used to anodize the inner holes of cylindrical parts of different lengths and thicknesses. In order to solve the problem of poor fluidity of the tank liquid in the inner hole, the splint structure is improved, and the fixation of the cathode conductive rod is designed to avoid the problem that manual fixation is difficult to last and prone to accidents. The design uses two hooks to hang on the anode conductive rod, which can avoid the problem that the cylindrical part is prone to tilting, thereby ensuring the effect of anodizing the inner hole of the cylindrical part. In addition, the anodizing fixture for the inner hole of the cylindrical part disclosed in the above embodiment is used to anodize the inner hole of the cylindrical part. The operation is simple and can be performed by one person. The anodizing of the inner hole of the cylindrical part can be completed quickly and in batches in a standard manner.

[0075] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art can make equivalent changes or replacements to the relevant technical features, and the technical solutions after these changes or replacements will fall within the scope of protection of the present application.

Claims

1. A fixture for anodizing the inner hole of a cylindrical part, characterized in that: It comprises an upper clamping plate (1), a lower clamping plate (2), an anode connecting rod (3), an anode hook (4), a cathode conductive rod (5), an upper insulating bushing (6), and a lower insulating bushing (7); The upper clamping plate (1) and the lower clamping plate (2) are arranged above and below the cylindrical member (8), and are connected at both ends by long bolts (9) to clamp the cylindrical member (8) from the upper and lower ends; A mounting ring is formed on the upper clamping plate (1) and the lower clamping plate (2). The mounting ring is coaxial with the cylindrical member (8) and has an outer diameter smaller than an inner diameter of the cylindrical member (8). Thin support arms are formed between the ends of the upper splint (1) and the lower splint (2) and the mounting ring. The upper splint (1) and the lower splint (2) are supported against the ends of the cylindrical member (8) with the thin support arms, and the width of the thin support arms is smaller than the outer diameter of the mounting ring. There are two anode connecting rods (3), the lower ends of which are connected to the two ends of the upper clamping plate (1); There are two anode hooks (4), which are connected to the upper ends of the two anode connecting rods (3) and are used to hook onto the anode conductive rods; The lower end of the cathode conductive rod (5) passes through the mounting ring on the upper clamping plate (1) and extends into the mounting ring on the lower clamping plate (2), and the upper end is used to connect to the cathode conductive rod; The upper insulating bushing (6) and the lower insulating bushing (7) are sleeved on the cathode conductive rod (5) and arranged in the mounting rings on the upper clamping plate (1) and the lower clamping plate (2).

2. The fixture for anodizing the inner hole of a cylindrical part according to claim 1, characterized in that: The upper clamping plate (1), the lower clamping plate (2) and the long bolt (9) are made of hard aluminum material; The head of the long bolt (9) is located below the lower clamping plate (2), and two locking nuts are screwed onto the screw rod, and the two locking nuts clamp the upper clamping plate (1) from the upper and lower sides; The mounting ring is located in the middle of the upper splint (1) and the lower splint (2). The thin support arm is a rectangular structure. The length of the thin support arm exceeds the outer diameter range of the cylindrical member (8). The outer side of the thin support arm is a rectangular structure with a larger width and a longer length, forming the two ends of the upper splint (1) and the lower splint (2). The width change of the upper splint (1) and the lower splint (2) is transitioned by an arc.

3. The fixture for anodizing the inner hole of a cylindrical part according to claim 2, characterized in that: The anode connecting rod (3) is made of hard aluminum material; The lower end of the anode connecting rod (3) is a step structure, the small end of the step structure is threadedly connected to the upper clamping plate (1), and is threadedly connected to a locking nut, which cooperates with the step portion of the step structure to clamp the upper clamping plate (1).

4. The fixture for anodizing the inner hole of a cylindrical part according to claim 3, characterized in that: The anode hook (4) is made of copper; The upper end of the anode connecting rod (3) has a bayonet, and the lower end of the anode hook (4) is inserted into the bayonet and connected to the anode connecting rod (3) by a bolt fastener; The upper end of the anode connecting rod (3) has a plurality of bolt holes, each bolt hole is spaced 50 mm apart in the height direction, and the wall surface of the upper end of the anode connecting rod (3) having the bolt holes is milled flat to a plane; The lower end of the anode hook (4) is a long straight section, and the thickness of the long straight section is less than the width of the bayonet 0.1mm.

5. The fixture for anodizing the inner hole of a cylindrical part according to claim 4, characterized in that: The cathode conductive rod (5) is a lead rod; The upper end of the cathode conductive rod (5) is connected to the cathode conductive rod via a copper wire, and the upper end of the cathode conductive rod (5) is provided with a wiring hole for connecting the copper wire.

6. The fixture for anodizing the inner hole of a cylindrical part according to claim 5, characterized in that: The upper insulating bushing (6) and the lower insulating bushing (7) are interference-fitted in the mounting rings on the upper clamping plate (1) and the lower clamping plate (2), and the outward flange formed at the upper end is pressed above the upper clamping plate (1) and the lower clamping plate (2), and the lower end of the lower insulating bushing (7) is sealed to support the lower end of the cathode conductive rod (5).

7. A method for anodizing the inner hole of a cylindrical part, implemented based on the fixture for anodizing the inner hole of a cylindrical part according to claim 6, characterized in that: include: Step 1: Clean and dry the cylindrical part (8); Step 2: Using long bolts (9), the upper clamping plate (2) and the lower clamping plate (10) are used to clamp the cylindrical member (8) from the upper and lower ends; Step 3: Install the anode connecting rod (3) onto the upper clamping plate (2) and connect the anode hook (4); Step 4: Assemble the upper insulating bushing (6) and the lower insulating bushing (7) onto the upper clamping plate (2) and the lower clamping plate (10), and install the cathode conductive rod (5); Step 5: Hang the anode hook (4) onto the anode conductive rod, so that the cylindrical member (8) reaches the specified depth of the tank liquid, and connect the cathode conductive rod (5) to the cathode conductive rod; Step 6: Applying electricity to perform anodizing treatment on the inner hole of the cylindrical member (8); Step 7: Turn off the power, disassemble the anodizing fixture for the inner hole of the cylindrical part, remove the cylindrical part (8), clean it, and complete the anodizing treatment of the cylindrical part (8).

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