Aluminum and aluminum alloy anodic oxidation hanger
By designing a three-claw aluminum and aluminum alloy anodizing fixture, and using an elastic support and a clamping unit with a variable angle, the problems of unreliable clamping and low efficiency in the existing technology are solved, and the parts are stably clamped and anodized efficiently.
Patent Information
- Application Number
- CN202520257291.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-18
AI Technical Summary
Existing aluminum and aluminum alloy anodizing fixtures suffer from problems such as unreliable clamping, unstable product quality, and low efficiency. In particular, they cannot effectively expel anodizing gas bags when clamping parts in confined spaces.
A three-jaw aluminum and aluminum alloy anodizing fixture was designed, consisting of a spindle, hook, chassis frame and multiple clamping components. The clamping components include an elastic support and clamping units. The variable included angle and knurled clamping cylinder ensure that the parts are securely clamped and the oxidation gas bag is effectively discharged.
It achieves reliable and stable clamping of parts, stable product quality, improved anodizing efficiency, and reduces the single clamping time to 30 seconds, avoiding scratches on parts and air pockets, thus improving production efficiency.
Smart Images
Figure CN223892906U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of anodizing, and specifically relates to a hanging fixture. Background Technology
[0002] Anodizing of aluminum and aluminum alloys involves using the part as the anode and applying an external current in a specific electrolyte to form an oxide film on its surface that has multiple functions such as protection, decoration, and insulation.
[0003] like Figure 4 The aluminum alloy housings shown in the image have seven types of parts with mounting holes on their end faces and a protruding groove on the side wall. Their anodizing process typically involves manually binding the parts with perforated aluminum wire. This method often results in insecure clamping, inconsistent manual binding, and obvious fixture marks, leading to unstable product quality. Furthermore, each clamping operation takes an average of about 5 minutes, making it inefficient. Summary of the Invention
[0004] The purpose of this utility model is to overcome the above-mentioned shortcomings of the prior art and to provide an aluminum and aluminum alloy anodizing fixture that is secure and stable, ensures stable product quality, and improves anodizing efficiency.
[0005] The technical solution of this utility model is as follows: a hook is mounted on the main shaft, a chassis frame is mounted below the main shaft, and multiple clamping components are detachably connected from top to bottom in the middle of the main shaft. Each clamping component includes a mounting part, and multiple hanging rods are connected to the outer wall of the mounting part. The upper part of the hanging rod has two adjacent mounting inclined surfaces, and the angle between the mounting inclined surface and the horizontal plane is α. A clamping unit group is mounted on one mounting inclined surface, and each clamping unit group includes multiple clamping units. The two clamping unit groups on the two mounting inclined surfaces are arranged alternately. The clamping unit includes an elastic support body, and the end of the elastic support body has a clamping cylinder that matches the mounting hole of the part to be clamped.
[0006] The elastic support includes two oppositely arranged support plates, a connecting plate connected to the bottom of the two support plates, a horizontal support plate connected to the end of one support plate, and a clamping cylinder connected to both ends of the horizontal support plate and the end of the other connecting plate.
[0007] The elastic support is formed by bending a strip of sheet metal into a U-shaped connection; the opening of the U-shaped connection is in an open state, and the included angle of the opening is a variable angle, which varies between 10° and 30°.
[0008] The value of a is 40°-50°.
[0009] The chassis frame is a triangular support with a mounting sleeve in the middle. The mounting sleeve is detachably fixed to the bottom of the main shaft by screws. A handle is located on one side of the hook. The main shaft has no holes; it is primarily fixed by the friction of the screw heads pressing against the shaft wall, allowing for flexible fixing of the mounting components.
[0010] The hanging rod is a rectangular long rod with equal width and height. The two adjacent rectangular faces at the top of the rectangular long rod are installation slopes, and the angle between the two adjacent rectangular faces and the horizontal direction is α.
[0011] There is a gap between the clamping units in each assembly of clamping units.
[0012] The mounting component is a sleeve, which can be a square sleeve or a round sleeve, and the outer wall of the mounting component has two oppositely arranged hanging rods.
[0013] The outer wall of the mounting component also has threaded holes, and screws for fastening the mounting component can be detachably installed in the threaded holes.
[0014] The upper edge of the clamping cylinder is rounded, and the upper half of the clamping cylinder is knurled.
[0015] The hook is the connection structure between this utility model and the outside world. It is used to hang the anode rod of the anodizing tank. When the parts are anodized, it is used to conduct the external power current and transmit it to the hanger and the parts of this utility model.
[0016] The handle, attached to the hook, is the primary gripping point for anodizing workers when lowering, transferring, and removing the device and its components from the tank. The handle is fixedly connected to the hook, angled downwards to balance the weight of the device and the components.
[0017] The main shaft is the main connecting component of this invention, connecting the hook, the clamping assembly, and the chassis frame. One end of the main shaft is flattened and connected to the hook.
[0018] The clamping assemblies are multiple in number and are used to hold parts. These clamping assemblies are movably arranged along the axial direction of the main shaft. The distance between the clamping assemblies is adjustable, and their number can be increased or decreased as needed.
[0019] The hanging rod is a rectangular rod with equal width and height. The angle between its two adjacent rectangular faces and the horizontal direction is 45°. The clamping unit and the schematic part set on the adjacent faces are inclined to the vertical direction at an angle of about 40°-50°, so that the anodized gas bag in the local narrow space of the schematic part can be smoothly discharged upward.
[0020] The number of clamping units is multiple. The clamping units arranged on the same side of the clamping unit are spaced apart by a certain distance to prevent interference between clamped parts on the same side; the clamping units arranged on adjacent sides of the clamping unit are staggered.
[0021] In this invention, the clamping unit includes a U-shaped connecting part, a straight connecting part, and a clamping cylinder. The U-shaped opening of the U-shaped connecting part is slightly open, with a variable included angle, approximately between 10° and 30°. The straight connecting part is horizontally fixed to one side of the U-shaped opening of the U-shaped connecting part by welding.
[0022] In this embodiment, the clamping cylinders are cylindrical, and there are three of them. They are fixed by welding to the other side of the U-shaped opening of the U-shaped connector and both ends of the straight connector. The three clamping cylinders form three part clamping support points. Since the U-shaped connector is an elastic support, the included angle of the opening of the U-shaped connector can be adjusted by hand pressure to accommodate parts with similar mounting holes.
[0023] The upper edge of the clamping cylinder is rounded to effectively prevent scratches on the parts during clamping and unloading. The upper half of the clamping cylinder is knurled to increase the friction between the clamping cylinder surface and the inner hole surface of the part mounting.
[0024] The screws are in multiple quantities and are used to fix the clamping assembly and chassis frame to the spindle.
[0025] The chassis frame is a triangular support and is fixed to the bottom of the main shaft by screws, which can be easily disassembled.
[0026] This utility model discloses a three-claw aluminum and aluminum alloy anodizing fixture, designed for products with mounting holes. The three claws support the mounting holes on the end face of the parts. The clamping cylinder is knurled, ensuring a secure and stable clamping, and preventing scratches on the parts during clamping and unloading. The clamping unit and the parts are clamped at a 45° angle, which effectively prevents the accumulation of anodizing gas pockets, ensuring stable product quality.
[0027] The side wall of the housing to be clamped has a protruding groove cavity, forming a localized narrow space. During the anodizing process, the oxygen generated in this groove cannot be quickly discharged, and a large amount accumulates on the inner wall of the groove, forming anodizing gas bags. For aluminum and aluminum alloy housing parts with mounting holes on the end face and localized narrow spaces, the use of existing anodizing fixtures often results in the lack of a suitable clamping position for the part and the inability to discharge the anodizing gas bags in the narrow space. At the same time, the clamping assembly of this utility model can move flexibly along the main shaft, the clamping unit can be increased as needed, the part load capacity is high, and the structure of this utility model is simple and compact, and easy to assemble. Attached Figure Description
[0028] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0029] Figure 2 This is a three-dimensional structural diagram of the clamping assembly of this utility model;
[0030] Figure 3This is a three-dimensional structural diagram of the clamping unit of this utility model;
[0031] Figure 4 This is a three-dimensional structural diagram of the parts clamping of this utility model;
[0032] The reference numerals in the attached drawings include: 1-Hook; 2-Handle; 3-Spindle; 4-Clamping assembly; 41-Mounting component; 42-Hanging rod; 43-Clamping unit; 431-U-shaped connector; 432-Straight connector; 433-Clamping cylinder; 5-Screw; 6-Chassis frame; 7-Illustrative part. Detailed Implementation
[0033] Figure 1-4 In this invention, the main shaft 3 is the primary connecting component, connecting the hook 1, clamping assembly 4, and chassis frame 6. The main shaft 3 is specifically a hollow cylindrical tube to reduce the weight of the invention. One end of the main shaft 3 is flattened and connected to the hook 1 by welding.
[0034] There are multiple clamping components 4. Specifically, the multiple clamping components 4 are used to hang parts, and the multiple clamping components 4 are movably arranged along the axial direction of the main shaft 3. Specifically, the distance between the multiple clamping components 4 is adjustable, and the number can be increased or decreased as needed.
[0035] The clamping assembly 4 includes a mounting component 41, hanging rods 42, and clamping unit 43. The two hanging rods 42 of each clamping assembly 4 are arranged 180° apart from each other around the cylindrical surface of the mounting component 41 and are fixedly connected by welding. In actual use, up to three hanging rods 42 can be added as needed, which can effectively increase the load-bearing capacity of the parts of this invention.
[0036] The hanging rod 42 is a rectangular rod of equal width and height, with its two adjacent rectangular faces forming a 45° angle with the horizontal direction. This ensures that the clamping unit 43 and the clamping parts, which are set on the adjacent faces, are clamped at a 45° angle, effectively venting the gas generated during anodizing and preventing gas bag accumulation. The hanging rod 42 and the clamping unit 43 are fixedly clamped together by welding.
[0037] The clamping units 43 are multiple, and the clamping units 43 arranged on the same surface are spaced apart to prevent interference between clamped parts on the same surface; the clamping units 43 arranged on adjacent surfaces are staggered to prevent interference between clamped parts on adjacent surfaces. In actual use, the number of clamping units 43 can be increased as needed to effectively increase the load-bearing capacity of the parts in this invention.
[0038] The clamping unit 43 includes a U-shaped connecting part 431, a straight connecting part 432, and a clamping cylinder 433. The U-shaped connecting part 431 has a slightly open U-shaped opening with a variable angle, approximately between 10° and 30°. The straight connecting part (i.e., the horizontal support piece) 432 is horizontally fixed to one side of the U-shaped opening of the U-shaped connecting part 431 by welding.
[0039] The clamping cylinders 433 are cylindrical, and there are three of them. They are fixed by welding to the other side of the U-shaped opening of the U-shaped connector 431 and both ends of the straight connector 432. The three clamping cylinders 433 form three part clamping support points, which can be inserted into the flange end face mounting holes of the illustrated part 7 to tighten the part; at the same time, the openings of the narrow spaces in the part 7 are tilted upwards to facilitate the timely discharge of air pockets generated during anodizing.
[0040] The upper edge of the clamping cylinder 433 is rounded to effectively prevent scratches on the parts during clamping and unloading. The upper part of the clamping cylinder 433 is knurled to increase the friction between the clamping cylindrical surface and the inner hole surface of the part, ensuring that the part is clamped securely and stably, and preventing poor conductivity and the part from shaking and falling off.
[0041] There are multiple screws 5, which are used to fix the clamping assembly 4 and the chassis frame 6 to the spindle 3.
[0042] The chassis frame 6 is a triangular support and is fixed to the bottom of the main shaft 3 by the screws 5, which can be easily disassembled.
[0043] The above description is only a preferred embodiment of this utility model, applicable to seven types of aluminum and aluminum alloy housing parts with mounting holes on the end face and containing narrow spaces in some areas. Testing shows that this utility model reduces the average clamping time to 30 seconds, reduces surface marks on parts to a minimum, and significantly improves quality stability. For those skilled in the art, based on the concept of this utility model, there will be changes in the specific implementation methods and application scope; therefore, the content of this specification should not be construed as limiting this utility model.
Claims
1. An aluminum and aluminum alloy anodizing fixture, characterized in that: A hook (1) is mounted on the main shaft (3), and a chassis frame (6) is mounted on the bottom of the main shaft (3). Multiple clamping components (4) are detachably connected from top to bottom in the middle of the main shaft (3). Each clamping component (4) includes a mounting part (41). Multiple hanging rods (42) are connected to the outer wall of the mounting part (41). There are two adjacent mounting slopes on the upper part of the hanging rods (42). The angle between the mounting slope and the horizontal plane is α. A clamping unit group is installed on one mounting slope. Each clamping unit group includes multiple clamping units (43). The two clamping unit groups on the two mounting slopes are arranged alternately. The clamping unit (43) includes an elastic support body. The end of the elastic support body has a clamping cylinder (433) that is adapted to the mounting hole of the part to be clamped.
2. The aluminum and aluminum alloy anodizing fixture according to claim 1, characterized in that: The elastic support includes two oppositely arranged support plates, a connecting plate connected to the bottom of the two support plates, a horizontal support plate connected to the end of one support plate, and a clamping cylinder (433) connected to both ends of the horizontal support plate and the end of the other connecting plate.
3. The aluminum and aluminum alloy anodizing fixture according to claim 2, characterized in that: The elastic support is formed by bending a strip of sheet metal to form a U-shaped connecting part (431); the opening of the U-shaped connecting part (431) is in an open state, and the opening angle is a variable angle, with the opening angle varying between 10° and 30°.
4. The aluminum and aluminum alloy anodizing fixture according to claim 1, characterized in that: The value of a is 40°-50°.
5. The aluminum and aluminum alloy anodizing fixture according to claim 1, characterized in that: The chassis frame (6) is a triangular support with a mounting sleeve in the middle. The mounting sleeve is detachably fixed to the bottom of the main shaft (3) by screws (5). The hook (1) has a handle (2) on one side.
6. The aluminum and aluminum alloy anodizing fixture according to claim 1 or 5, characterized in that: The hanging rod (42) is a rectangular long rod with equal width and height. The two adjacent rectangular surfaces at the top of the rectangular long rod are installation slopes, and the angle between the two adjacent rectangular surfaces and the horizontal direction is α.
7. The aluminum and aluminum alloy anodizing fixture according to claim 1, characterized in that: There is a gap between the clamping units (43) of each assembly of clamping units.
8. The aluminum and aluminum alloy anodizing fixture according to claim 1, characterized in that: The mounting component (41) is a sleeve, and the outer wall of the mounting component (41) has two oppositely arranged hanging rods (42).
9. The aluminum and aluminum alloy anodizing fixture according to claim 1, characterized in that: The outer wall of the mounting component (41) also has a threaded hole, and the screw (5) for fastening the mounting component (41) can be detachably installed at the threaded hole.
10. The aluminum and aluminum alloy anodizing fixture according to claim 1, characterized in that: The upper edge of the clamping cylinder (433) is rounded, and the upper half of the clamping cylinder (433) is knurled.