Self-adaptive three-point elastic clamping type fastener electrophoresis tool

Abstract

The self-adaptive three-point elastic clamping type fastener electrophoresis tool comprises a hanging frame, a hollow round pipe, a disc and a clamping assembly, the hanging frame is fixedly installed at the top of the hollow round pipe, a round hole is formed in the center point of the disc, the hollow round pipe penetrates through the round hole of the disc and is fixedly connected with the disc, and the clamping assembly is fixedly connected with the disc. A plurality of clamping assemblies are arranged at the bottom of the disc in an annular array at equal intervals, each clamping assembly comprises two elastic wires, and the ends, away from the disc, of the two elastic wires clamp fasteners. The electrophoresis tool has the advantages that the elastic wires clamp a workpiece through three-point elastic deformation, tooth wires are prevented from being shielded, it is guaranteed that electrophoresis current uniformly passes through the whole surface, assembly and disassembly are more convenient, efficiency is higher, through the adoption of the universal design, punching tools do not need to be independently designed for fasteners of different sizes in the manufacturing process of the electrophoresis tool, and the production cost is reduced. Therefore, the tool investment is reduced.

Description

Technical Field

[0001] This utility model relates to the field of electrophoretic coating equipment technology, and in particular to an adaptive three-point elastic clamping fastener electrophoretic fixture. Background Technology

[0002] Existing fastener electrophoresis fixtures mostly use screw fixing, which has problems such as cumbersome operation and time-consuming loading and unloading. After a period of use, the threaded holes are worn and corroded by deplasticization, and the fasteners are at risk of poor conductivity and falling off. At the same time, the close contact between the screw and the fixture causes some threads to be blocked, making it impossible to achieve uniform electrophoresis and affecting the appearance quality of the product.

[0003] Traditional tooling requires frequent screw tightening and loosening, increasing labor costs; and due to limitations in clamping methods, it is difficult to adapt to the electrophoretic requirements of fasteners of various sizes. In addition, incomplete electrophoretic coatings cannot meet stringent requirements for corrosion resistance (such as salt spray test ≥240h). Utility Model Content

[0004] The purpose of this invention is to provide an adaptive three-point elastic clamping fastener electrophoresis fixture. The elastic wire clamps the workpiece through three-point elastic deformation, which not only avoids blocking the wires, but also ensures that the electrophoretic current passes evenly through the entire surface, making loading and unloading more convenient and efficient. By adopting a universal design, the manufacturing of the electrophoresis fixture no longer requires the design of separate drilling fixtures for fasteners of different sizes, thereby reducing the investment in tooling.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] An adaptive three-point elastic clamping fastener electrophoresis fixture is characterized by comprising a hanger, a hollow circular tube, a disc, and clamping components. The hanger is fixedly installed on the top of the hollow circular tube. A circular hole is opened at the center point of the disc. The hollow circular tube passes through the circular hole of the disc and is connected and fixed to the disc. An array of clamping components is arranged in a ring array at equal intervals at the bottom of the disc. Each clamping component includes two sets of elastic wires, and the ends of the two sets of elastic wires away from the disc clamp the fastener.

[0007] Preferably, the disc has a diameter of 100mm and a thickness of 20mm. The disc is made of aluminum alloy, which balances lightweight and corrosion resistance. The disc is compatible with the size of common electrophoresis equipment, ensuring high decorative effect and high corrosion resistance of the fastener coating.

[0008] Preferably, the bottom surface of the disk is a conical inclined surface with an angle of 3°.

[0009] Preferably, the spring wire is made of spring steel with a diameter of 5mm and a hardness of HRC45-50, and a length of 100mm. One end of the spring wire is welded and fixed to the bottom of the disc, and the effective clamping section of the other end of the spring wire is 80mm.

[0010] Preferably, the included angle between adjacent elastic wires is 8°.

[0011] Preferably, a fixing sleeve is provided above the circular hole of the disc, and two sets of corresponding limiting holes are provided on the outer wall of the fixing sleeve. The fixing sleeve is fixedly connected to the hollow tube through the pin in the limiting hole, and multiple mounting holes are provided on the hollow tube at equal intervals corresponding to the pin.

[0012] Preferably, one set of elastic wires in each set of clamping components is bent and provided with a clamping opening, and the angle between the upper and lower sets of elastic wires at the clamping opening is 30°.

[0013] Preferably, the upper and lower sets of elastic wires at the clamping opening are provided with micron-level guide grooves, and the micron-level guide grooves are V-shaped grooves.

[0014] Preferably, the height of the fixing sleeve is 8mm, the distance between adjacent mounting holes is 200mm, and the diameter of the bracket is 50mm.

[0015] In summary, this utility model has the following beneficial effects: The elastic wire of this utility model clamps the workpiece through three-point elastic deformation, which not only avoids blocking the wire, but also ensures that the electrophoretic current passes evenly through the entire surface, making loading and unloading more convenient and efficient. By adopting a universal design, the production of electrophoresis fixtures no longer requires the design of separate drilling fixtures for fasteners of different sizes, and there is no need for unscrewing operations, which is suitable for mass production, thereby reducing the investment in tooling. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a traditional fastener electrophoresis fixture;

[0017] Figure 2 This is a schematic diagram of the adaptive three-point elastic clamping fastener electrophoresis fixture structure of this utility model;

[0018] Figure 3 yes Figure 2 Schematic diagram of the structure at point A;

[0019] Figure 4 This is a schematic diagram of the disk and spring wire installation structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the surface structure of the spring wire at the clamping opening of this utility model. Detailed Implementation

[0021] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0022] The term "comprising" and its variations as used herein signify open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "at least partially based on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc., may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0023] Figure 1 Traditional fastener electrophoresis fixtures consist of a single mounting plate connected to the bottom of a bracket. The mounting plate has multiple arrays of threaded holes, through which fasteners are installed. After a period of use, the threaded holes may wear and corrode, leading to poor conductivity and the risk of fasteners falling off.

[0024] Figures 2 to 5 This utility model discloses an adaptive three-point elastic clamping fastener electrophoresis fixture, which includes a hanger 1, a hollow round tube 2, a disc 3, and clamping components. The hanger 1 is fixedly installed on the top of the hollow round tube 2. A round hole is opened at the center point of the disc 3. The hollow round tube 2 passes through the round hole of the disc 3 and is connected and fixed to the disc 3. An array of clamping components is arranged in a ring array at equal intervals at the bottom of the disc 3. The clamping components include two sets of elastic wires 4. The ends of the two sets of elastic wires 4 away from the disc 3 clamp the fastener.

[0025] The disc 3 has a diameter of 100mm and a thickness of 20mm. The disc 3 is made of aluminum alloy, which balances lightweight and corrosion resistance. The disc 3 is compatible with the size of common electrophoresis equipment, ensuring high decorative effect and high corrosion resistance of the fastener coating.

[0026] The bottom surface of disk 3 is set as a conical inclined surface with an angle of 3°.

[0027] The spring wire 4 is made of spring steel with a diameter of 5mm and a hardness of HRC45-50, and a length of 100mm. One end of the spring wire 4 is welded and fixed to the bottom of the disc 3. The spring wire 4 and the disc 3 are fixedly connected by argon arc welding and laser cladding to ensure the quality of the weld, avoid false welding or cracks, and ensure the conductivity of the workpiece. Combined with the technology of improving the weld toe shape and reducing welding residual stress, the fatigue strength of the joint can be further improved. The effective clamping section of the other end of the spring wire 4 is 80mm. The slope of the bottom surface of the spring wire 4 and the disc 3 is the same, so that the fastener clamped by the spring wire 4 is tilted, so that the electrophoretic paint in the internal hexagonal groove on the fastener can flow out.

[0028] The included angle between adjacent elastic wires 4 is 8°, which enables simultaneous electrophoretic coating of multiple sets of fasteners.

[0029] A fixing sleeve 5 is provided above the circular hole of the disc 3. The outer wall of the fixing sleeve 5 has two sets of corresponding limiting holes 6. The fixing sleeve 5 is fixedly connected to the hollow tube 2 through the pins 7 in the limiting holes 6. The hollow tube 2 has multiple mounting holes 8 at equal intervals corresponding to the pins 7, which can support stepless adjustment of fasteners of various sizes and thicknesses.

[0030] One set of spring wires 4 in each clamping assembly is bent and has a clamping opening 9. The angle between the upper and lower sets of spring wires 4 at the clamping opening 9 is 30°. When the fastener is placed in the clamping opening 9 area of ​​the spring wire 4, the spring wire 4 clamps the workpiece through three-point elastic deformation, which not only avoids blocking the wires, but also ensures that the electrophoretic current passes evenly through the entire surface, ensuring stable clamping of fasteners of various sizes, thereby effectively reducing the types of tooling and lowering costs.

[0031] The clamping port 9 has two sets of elastic wires 4 with micron-level flow guide grooves 10 on their surfaces. The micron-level flow guide grooves 10 are V-shaped grooves, which, combined with the 3° conical slope at the bottom of the disc, effectively increase the flow rate of the electrophoretic liquid, thereby optimizing the coating process. This design increases the flow rate of the electrophoretic liquid by 25% and significantly enhances the uniformity of the paint film, achieving a uniformity of 98%.

[0032] The fixed sleeve 5 has a height of 8mm, the distance between adjacent mounting holes 8 is 200mm, and the bracket 1 has a diameter of 50mm.

[0033] The elastic wire of this invention clamps the workpiece through three-point elastic deformation, which not only avoids obstructing the wires but also ensures that the electrophoretic current passes evenly across the entire surface, making loading and unloading more convenient and efficient. By adopting a universal design, the production of electrophoresis fixtures no longer requires the design of separate drilling fixtures for fasteners of different sizes, eliminating the need for unscrewing operations, and making it suitable for mass production, thereby reducing the investment in fixtures.

[0034] The various embodiments of this disclosure have been described above. Those skilled in the art should understand that the above description is merely exemplary and not exhaustive, nor is it limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or improvements to the prior art of the embodiments, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. An electrophoretic tooling for self-adapting three-point elastic clamping fasteners, characterized by, The device comprises a hanger, a hollow pipe, a disc and a clamping assembly, the hanger is fixedly installed on the top of the hollow pipe, a circular hole is formed at the center point of the disc, the hollow pipe penetrates through the circular hole of the disc and is fixedly connected with the disc, a plurality of clamping assemblies are equidistantly arranged in an annular array at the bottom of the disc, and each clamping assembly comprises two groups of elastic wires.

2. The self-adapting three-point elastic clamping type fastener electrophoresis tool according to claim 1, characterized in that: The disc has a diameter of 100 mm and a thickness of 20 mm, and is made of an aluminum alloy.

3. The self-adapting three-point elastic clamping fastener electrophoresis tool according to claim 1, wherein: The bottom surface of the disc is provided with a conical inclined surface with an inclination of 3°.

4. The self-adapting three-point elastic clamping fastener electrophoresis tool according to claim 1, wherein: The elastic wire is made of spring steel with a diameter of 5 mm, a hardness of HRC45-50 and a length of 100 mm, one end of the elastic wire is welded and fixed with the bottom of the disc, and the effective clamping section of the other end of the elastic wire is 80 mm.

5. The self-adapting three-point elastic clamping fastener electrophoresis tool according to claim 1, wherein: The included angle between adjacent elastic wires is 8°.

6. The self-adapting three-point elastic clamping fastener electrophoresis tool according to claim 1, characterized in that: A fixing sleeve is arranged above the circular hole of the disc, two groups of limiting holes are formed in the outer wall of the fixing sleeve, the fixing sleeve is fixedly connected with the hollow pipe through the bolts in the limiting holes, and a plurality of mounting holes are equidistantly arranged on the hollow pipe corresponding to the bolts.

7. The self-adapting three-point elastic clamping fastener electrophoresis tool according to claim 1, characterized in that: One of the elastic wires of each group of clamping assemblies is bent to form a clamping opening, and the included angle between the upper and lower elastic wires at the clamping opening is 30°.

8. The self-adapting three-point elastic clamping fastener electrophoresis tool according to claim 7, characterized in that: Micro-scale flow guide grooves are formed on the surfaces of the upper and lower elastic wires at the clamping opening, and the micro-scale flow guide grooves are V-shaped grooves.

9. The self-adapting three-point elastic clamping fastener electrophoresis tool according to claim 6, characterized in that: The height of the fixing sleeve is 8 mm, the distance between adjacent mounting holes is 200 mm, and the diameter of the hanger is 50 mm.

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