A small aluminum hanging fixture for large tank anodizing and coloring

Abstract

A small aluminum workpiece hanger for large-tank anodizing and coloring includes: a supporting crossbeam; at least one pair of conductive rods; each conductive rod has at least one pair of parallel crossbars installed on it, with the crossbars perpendicular to the conductive rods; a vertical pole installed between two adjacent crossbars, with the vertical pole perpendicular to the crossbars; and a limit buckle installed on each vertical pole for clamping the aluminum workpiece. The advantages of this invention are: through innovative structural design, this aluminum workpiece hanger achieves concealed hanging points and integrated conductive contact, completely solving the problems of lack of support points on the surface of small aluminum workpieces and uneven coloring caused by the use of titanium hangers. Furthermore, its good elasticity simplifies assembly and disassembly operations and eliminates the pre-treatment process of removing the coating from the hanger. Ultimately, while ensuring a high-quality product appearance and uniform coloring, it achieves a simple structure, durability, and significantly improved single-processing capacity.

Description

Technical Field

[0001] This utility model relates to a small aluminum hanging fixture, specifically a small aluminum hanging fixture for anodizing and coloring in large tanks. Background Technology

[0002] In the anodizing production of aluminum profiles, large-slot anodizing production lines are mainly used for long products such as building profiles and solar panel frames. For these products, the sawn ends are allowed to have "exposed white" defects caused by contact points. Therefore, a simple method of feeding is usually used, such as directly winding aluminum wire or using clamps to hold the material on the conductive main rod. However, this method leaves obvious contact points on the surface of the profile, which must be sawed off in a subsequent process. This not only increases the number of processing steps but also wastes material.

[0003] For small aluminum parts, especially irregularly shaped components such as "U"-shaped and "I"-shaped parts, the traditional feeding methods mentioned above face serious challenges. These parts are usually precision-machined, small in size, complex in shape, and have extremely high requirements for surface quality, allowing no visible clamping points or damage. If sawing is used to handle the clamping points, it will directly lead to the scrapping of the parts.

[0004] To address the hanging issue of small aluminum parts, titanium hangers are commonly used in the industry. Titanium hangers are widely used for anodizing small products due to their good elasticity, excellent conductivity, and the ability to form a passivation film on their surface for corrosion resistance. However, in processes requiring electrolytic coloring, titanium hangers reveal a fatal flaw: the potential difference between titanium and aluminum, and the influence of the surface oxide film, lead to uneven current distribution. This results in uneven coloring, mottled colors, or even complete failure to color small aluminum parts in the coloring bath, making it difficult to meet customer color requirements.

[0005] If aluminum fixtures are used instead of titanium fixtures to avoid the coloring problem, the issue of conductivity consistency is solved, but new drawbacks arise: First, aluminum fixtures generally have poor elasticity and are prone to deformation after repeated clamping, resulting in insufficient clamping force and easy detachment of parts in the bath solution; second, before use, the surface of aluminum fixtures, like the parts, is covered with a natural oxide film, which has poor conductivity. An additional "deposition" process (such as alkaline washing or acid washing) must be added to remove the oxide film at the contact points. This not only increases the complexity of the process and the consumption of chemicals, but also shortens the service life of the fixtures themselves.

[0006] In summary, the existing technology lacks a hanger that can simultaneously meet the following requirements: 1) Provides reliable and concealed clamping for small, irregularly shaped aluminum parts without damaging the appearance. 2) It possesses excellent and stable conductivity, ensuring uniform oxide film thickness and consistent electrolytic coloring. 3) It has good elasticity, is easy to assemble and disassemble quickly, and is durable; 4) No additional demolding process is required, simplifying the operation process.

[0007] Therefore, developing a new type of specialized hanger to fill this technological gap has significant practical implications and production value. Utility Model Content

[0008] The purpose of this utility model is to address the shortcomings and defects of existing technologies by providing a small aluminum hanging fixture for large-tank anodizing and coloring. Through innovative structural design, this aluminum hanging fixture achieves both concealed hanging points and integrated conductive contact. It not only completely solves the problems of lack of support points on the surface of small aluminum parts and uneven coloring caused by the use of titanium hanging fixtures, but also simplifies the assembly and disassembly operations due to its good elasticity and eliminates the pre-treatment process of removing the coating from the hanging fixture. Ultimately, while ensuring the high-quality appearance and uniform coloring of the product, it achieves the effects of simple structure, durability, and significantly improved single-processing capacity.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: a small aluminum workpiece hanger for large-scale anodizing and coloring, comprising: a supporting crossbeam; at least one pair of conductive rods: arranged parallel to each other on the supporting crossbeam; multiple crossbars: each conductive rod is equipped with at least one pair of parallel crossbars, and the crossbars are perpendicular to the conductive rods; multiple uprights: the uprights are installed between two adjacent crossbars, and the uprights are perpendicular to the crossbars; multiple limiting buckles: each upright is equipped with a limiting buckle, which is used to clamp the aluminum workpiece.

[0010] Furthermore, the limiting buckle includes a connecting plate and a limiting plate. One end of the connecting plate is fixedly connected to one end of the limiting plate. The connecting plate is provided with an installation structure for connecting with the upright. The end of the limiting plate away from the connecting plate is provided with a guiding inclined surface.

[0011] Furthermore, the included angle ∠1 between the connecting plate and the limiting plate is an obtuse angle.

[0012] Furthermore, the mounting structure is a mounting groove provided on the connecting plate, and a bolt hole is provided in the middle of the mounting groove.

[0013] Furthermore, the conductive rods are provided in multiple sets and are symmetrically distributed on both sides of the supporting crossbeam.

[0014] Furthermore, there are several crossbars, all of which are distributed in multiple layers along the vertical height direction of the conductive rod.

[0015] Furthermore, there are several uprights, all of which are equidistantly distributed along the transverse width of the crossbar.

[0016] After adopting the above technical solution, the beneficial effects of this utility model are as follows: This aluminum hanger, through its innovative structural design, achieves the integration of concealed hanging points and conductive contact. It not only completely solves the problems of no support points on the appearance surface of small aluminum parts and uneven coloring caused by the use of titanium hangers, but also simplifies the assembly and disassembly operation with its good elasticity and eliminates the pre-treatment process of removing the hanger from the film. Ultimately, while ensuring the high-quality appearance and uniform coloring of the product, it achieves the effects of simple structure, durability and significantly improved single-processing capacity. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 yes Figure 1 Enlarged structural diagram at point A in the middle.

[0020] Figure 3 yes Figure 1 The corresponding rear view structure diagram.

[0021] Figure 4 This is a schematic diagram of the limiting buckle in this utility model.

[0022] Figure 5 yes Figure 4 The corresponding top-view structural diagram.

[0023] Figure 6 yes Figure 4 The corresponding left-view structure diagram.

[0024] Figure 7 This is a structural schematic diagram of Embodiment 2 of this utility model.

[0025] Figure 8 This is a second-angle schematic diagram of Embodiment 2 of this utility model.

[0026] Figure 9 This is a schematic diagram of the usage state of this utility model.

[0027] Explanation of reference numerals in the attached diagram: 1. Limiting buckle; 2. Upright rod; 3. Horizontal rod; 4. Conductive rod; 5. Supporting crossbeam; 1-1. Bolt hole; 1-2. Connecting plate; 1-3. Mounting groove; 1-4. Limiting plate; 1-5. Guide inclined surface. Detailed Implementation

[0028] Example

[0029] See Figures 1-6 As shown, the technical solution adopted in this specific embodiment includes: Support beam 5; At least one pair of conductive rods 4 are arranged in parallel on the supporting crossbeam rod 5; Multiple crossbars 3: Each conductive rod 4 is equipped with at least one pair of parallel crossbars 3, and the crossbars 3 are perpendicular to the conductive rod 4; Multiple uprights: installed between two adjacent horizontal bars 3, with the uprights 2 perpendicular to the horizontal bars 3; Multiple limit buckles 1: Each upright 2 is equipped with a limit buckle 1, which is used to clamp aluminum workpieces.

[0030] More specifically, the limiting buckle 1 includes a connecting plate 1-2 and a limiting plate 1-4. One end of the connecting plate 1-2 is fixedly connected to one end of the limiting plate 1-4. The connecting plate 1-2 is provided with an installation structure for connecting to the upright 2. The end of the limiting plate 1-4 away from the connecting plate 1-2 is provided with a guiding inclined surface 1-5. The limiting buckle 1 directly contacts the inner wall of the small aluminum part to form a concealed hanging point, while the guiding inclined surface 1-5 can effectively reduce the installation difficulty, realize the rapid and accurate insertion of the aluminum workpiece, and greatly improve the feeding efficiency.

[0031] More specifically, the angle ∠1 between the connecting plate 1-2 and the limiting plate 1-4 is an obtuse angle. This angle design ensures that the limiting plate can abut against the inner wall of the workpiece at an optimal tilt angle, thereby generating a self-locking clamping force pointing inwards from the workpiece. This not only prevents the workpiece from loosening and falling off under the impact of the bath liquid, but also ensures the durability of the buckle because its elastic deformation mainly occurs on the upright, rather than the buckle itself.

[0032] More specifically, the installation structure consists of a mounting groove 1-3 on the connecting plate 1-2, with a bolt hole 1-1 in the center of the mounting groove 1-3. The mounting groove 1-3 and bolt hole 1-1 are used to secure the device with bolts. This connection method offers advantages such as reliable connection and structural stability, and can withstand frequent disassembly and chemical corrosion during the oxidation and coloring process. Furthermore, this design enables modular installation, allowing for flexible adjustment of the spacing between the two limit clips on the same upright according to the size of small aluminum parts, enhancing the versatility of the hanger and facilitating the individual replacement and maintenance of damaged parts.

[0033] More specifically, the conductive rods 4 are provided in multiple sets and are symmetrically distributed on both sides of the supporting crossbeam rods 5.

[0034] More specifically, there are several crossbars 3, and they are distributed in multiple layers along the vertical height direction of the conductive rod 4.

[0035] More specifically, there are several uprights 2, and they are all equidistantly distributed along the transverse width of the crossbar 3.

[0036] Example

[0037] See Figure 7-8 As shown, this embodiment differs from Embodiment 1 in that: several uprights 2 are provided, and they are all distributed crosswise along the transverse width of the crossbar 3. When the length of the conductive rod 4 is insufficient, one less crossbar 3 can be installed, thereby reducing the number of installation positions of the crossbar 3, and the uprights 2 can be installed on the crossbar 3 in a staggered manner.

[0038] The working principle of this utility model is as follows: When performing anodizing and coloring operations on small aluminum parts, the operator gently presses the two adjacent uprights 2 inwards. Utilizing the elasticity of the uprights 2 material, the distance between the limiting clips 1 installed on the uprights is temporarily reduced. Then, the inner groove of the "U"-shaped or "I"-shaped aluminum workpiece is aligned and inserted between these two sets of limiting clips 1. After releasing the uprights 2, they rebound under their own elastic restoring force, causing the limiting clips 1 to firmly abut against the inner groove wall of the aluminum workpiece, thus achieving concealed clamping and ensuring that there are no clamping points on the exposed surface of the workpiece. After loading, the entire fixture is immersed in the large tank anodizing and coloring production line using hoisting equipment for operation. Since the fixture and the workpiece are made of the same material, the contact points do not require separate "molding removal" treatment, simplifying the process. During unloading, gently pressing the uprights 2 again to reduce the clip distance allows for easy removal of the workpiece. The operation is convenient and efficient. See details below. Figure 9 As shown.

[0039] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A hanger for small aluminum parts used in large-tank anodizing and coloring, characterized in that: include: Support beam (5); At least one pair of conductive rods (4): arranged in parallel on the supporting crossbeam rod (5); Multiple crossbars (3): Each conductive rod (4) is equipped with at least one pair of parallel crossbars (3), and the crossbars (3) are perpendicular to the conductive rods (4); Multiple uprights (2): The uprights (2) are installed between two adjacent horizontal bars (3), and the uprights (2) are perpendicular to the horizontal bars (3); Multiple limiting buckles (1): Each upright (2) is equipped with a limiting buckle (1), which is used to clamp aluminum workpieces.

2. A hanger for small pieces of aluminum material for oxidation coloring in a large tank according to claim 1, characterized in that: The limiting buckle (1) includes a connecting plate (1-2) and a limiting plate (1-4). One end of the connecting plate (1-2) is fixedly connected to one end of the limiting plate (1-4). The connecting plate (1-2) is provided with an installation structure for connecting with the upright (2). The end of the limiting plate (1-4) away from the connecting plate (1-2) is provided with a guide inclined surface (1-5).

3. A small aluminum hanging fixture for large-tank anodizing and coloring according to claim 2, characterized in that: The included angle ∠1 between the connecting plate (1-2) and the limiting plate (1-4) is an obtuse angle.

4. A hanger for small pieces of aluminum material for oxidation coloring in a large tank according to claim 2, characterized in that: The mounting structure is a mounting groove (1-3) provided on the connecting plate (1-2), and a bolt hole (1-1) is provided in the middle of the mounting groove (1-3).

5. A hanger for small pieces of aluminum material for oxidation coloring in a large tank according to claim 1, characterized in that: The conductive rods (4) are provided in multiple sets and are symmetrically distributed on both sides of the supporting crossbeam (5).

6. A small aluminum hanging fixture for large-tank anodizing and coloring according to claim 1, characterized in that: The crossbar (3) is provided in several layers, and all of them are distributed in multiple layers along the vertical height direction of the conductive rod (4).

7. A hanger for small pieces of aluminum material for oxidation coloring in a large tank according to claim 1, characterized in that: The uprights (2) are provided in several units, and they are all equidistantly distributed along the transverse width of the crossbar (3).

8. A hanger for small pieces of aluminum material for oxidation coloring in a large tank according to claim 1, characterized in that: The uprights (2) are provided in several places, and they are all distributed intersectingly along the horizontal width of the crossbar (3).

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