Anti-static tool for automobile fuel tank cap

Abstract

The utility model relates to the technical field of automobile coating, in particular to an automobile fuel tank cap anti-static tool which comprises an adsorption ring, the adsorption ring is arranged on the periphery of an automobile fuel tank cap in a sleeved mode, the adsorption ring and the automobile fuel tank cap are located on the same plane, and one end of the adsorption ring is further provided with an installation structure for a fuel tank cap clamp to be inserted in. The adsorption ring surrounds the periphery of the automobile fuel tank cap, so that paint gathering on the edge of the fuel tank cap is avoided. Meanwhile, the installation structure is arranged, an existing automobile fuel tank cap clamp can be fully utilized, the universality of the tool is enhanced, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile painting, and more specifically, to an anti-static tooling for an automobile fuel tank cover. Background Art

[0002] During the spraying of the fuel tank covers of some automobile models, they are installed at the fender. However, if the fuel tank cover is installed at the fender during the spraying process, there will be paint shortage at the edge and inner panel of the fuel tank cover during robot spraying, and the paint shortage parts need to be manually sprayed to ensure. To reduce the workload of employees, it is necessary to promote the installation of the fuel tank cover on the front crossbeam for spraying, and robot spraying can ensure that the fuel tank cover has no paint shortage. However, in actual spraying, there is a situation of poor orange peel on the fuel tank cover. Poor orange peel is a common process defect during the body spraying process, mostly seen near the edge parts of the body. The paint film sprayed on the body, due to insufficient film thickness, results in poor leveling effect of the paint film, showing an uneven shape, and the appearance is visually like an orange peel, which is called orange peel. During the spraying process of the white body, electrostatic spraying is mostly used for the outer panel to improve the paint application rate, resulting in paint accumulation, flow and bubble formation due to charge concentration at the edge parts. Therefore, for the edge parts, small flow and low voltage spraying are commonly used, but it will cause insufficient film thickness of the paint film and ultimately lead to orange peel appearance near the edge. Orange peel repair generally requires sanding, painting, and polishing, consuming a large amount of manpower and material resources and wasting the production rhythm. To deal with the poor orange peel of the fuel tank cover, the method of increasing the flow rate and raising the spraying voltage is often adopted to improve the paint film thickness. The existing technology requires a lot of time to adjust the spraying parameters for orange peel improvement. At the same time, there are high requirements for the control of the spraying state of the robot, the on-site temperature and humidity, the viscosity of the paint, etc. When the external conditions change, edge flow or orange peel will occur repeatedly, causing certain troubles to the painting production management. It is necessary to continuously adjust the spraying parameters to adapt to the changes of the external conditions, resulting in waste of manpower, material resources and resource coordination. The reasons for these problems are as follows: 1. Electrostatic spraying is used for the outer panel, and due to the shape of the edge parts, charges accumulate, easily adsorbing paint mist, with a strong attraction to the paint mist. Increasing the flow rate and voltage are both likely to cause paint accumulation, flow and bubble formation at the edge. 2. Relying on parameter adjustment for improvement is greatly affected by external conditions. For example, in terms of paint: the solvent evaporation rate in the paint is affected by the external temperature. The lower the temperature, the slower the solvent evaporation. Under the same process parameter conditions, it is easier to flow and bubble at low temperatures. For example, in terms of the robot: the process parameters set the spraying flow rate, the rotation speed of the spinning cup, the inner and outer forming air, and the voltage. All of the above 5 parameters are affected by the hardware of the robot, making the actual spraying state unstable, easily causing flow and bubble formation or orange peel at the edge parts.

[0003] There is a Chinese utility model with the publication number CN207170078U, which discloses a spraying fixture for painting a plastic fuel tank cap. The spraying fixture includes a bracket, an anti-static ring, and a first fixing rod for fixing the fuel tank cap. Among them, a support rod is fixedly arranged on the bracket; the first fixing rod is fixedly arranged on the bracket; the lowest point of the anti-static ring is fixedly connected to the end of the support rod, and a set distance is maintained between the end of the anti-static ring and the end of the first fixing rod. The spraying fixture for painting the plastic fuel tank cap provided by the utility model does not need to clamp the fixture on the edge of the fuel tank cap, solves the problem that the plastic fuel tank cap is prone to plastic deformation when clamped by the fixture in the prior art. At the same time, by setting the anti-static ring, the electric field at the edge of the fuel tank cap is dispersed, so that bubbles or paint accumulation are not likely to occur at the edge of the fuel tank cap, ensuring the painting quality of the fuel tank cap.

[0004] In the above technical solution, the fixture can only be directly fixed to the automobile fuel tank cap, and the existing automobile fuel tank cap fixtures cannot be used. The manufacturing cost is relatively high and the use is single. It can only be used for automobile fuel tank caps with a specific structure. Moreover, the position of the automobile fuel tank cap cannot be fixed during this process, and an additional fixture is required to clamp the automobile fuel tank cap. Utility Model Content

[0005] To solve the above technical problems, the present utility model provides an anti-static tooling for an automobile fuel tank cap, which surrounds the edge of the fuel tank cap around the automobile fuel tank cap to avoid paint accumulation at the edge of the fuel tank cap. At the same time, an installation structure is provided, which can make full use of the existing automobile fuel tank cap fixtures, enhancing the versatility of the tooling and reducing the manufacturing cost.

[0006] To solve the above technical problems, the present utility model provides an anti-static tooling for an automobile fuel tank cap, including an adsorption ring. The adsorption ring is sleeved around the automobile fuel tank cap, and an installation structure for inserting the fuel tank cap fixture is further provided on the adsorption ring.

[0007] In this technical solution, when the car fuel tank cap needs to be sprayed, first use the car fuel tank cap fixture to clamp the car fuel tank cap to fix its position. Then insert the structural plate of the car fuel tank cap fixture into the installation structure to fix the tooling. In this process, the tooling can be directly installed on the existing car fuel tank cap fixture, making full use of the existing car fuel tank cap fixture. And the design of the tooling only needs to focus on how to achieve the adsorption function without considering how to fix it on the car fuel tank cap, reducing the design difficulty and manufacturing cost. By making full use of the existing car fuel tank cap fixture, it can adapt to different car fuel tank cap fixtures to fit different car fuel tank caps, improving the versatility of the tooling. There is an adsorption ring fixed on the installation structure. An adsorption area is formed around the inside of the adsorption ring, and the area of the adsorption area is larger than the area of the car fuel tank cap. Place the car fuel tank cap into the adsorption area. The adsorption ring is made of a conductive material. When electrostatic spraying the car fuel tank cap, charges accumulate on the adsorption ring, forming an electric field in the adsorption space inside the adsorption ring. Acting on the charges on the car fuel tank cap, it reduces the degree of paint accumulation at the edge of the car fuel tank cap caused by charge accumulation, so as to achieve the purpose of improving orange peel without causing edge sagging.

[0008] Preferably, the installation mechanism includes an installation bracket and an installation screw. The adsorption ring is fixed on the outer surface of the installation bracket. The structural plate of the car fuel tank cap fixture can be inserted into the installation bracket, and the installation screw is screwed into the installation bracket to lock the structural plate inserted into the installation bracket.

[0009] Preferably, the installation bracket is of a U-shaped groove structure. The adsorption ring is fixed on the outer surface of the bottom of the U-shaped groove structure. The structural plate is inserted into the groove of the U-shaped groove structure. The installation screw is installed on the groove wall of the U-shaped groove structure of the installation bracket and abuts against the structural plate.

[0010] Preferably, a semi-circular notch is provided on the groove wall of the U-shaped groove structure. A nut is fixedly connected to the outside of the U-shaped groove structure at the notch, and the nut is threadedly connected to the installation screw.

[0011] Preferably, a handle is further fixed to the end of the installation screw away from the installation bracket to drive the relative rotation of the installation screw and the nut.

[0012] Preferably, a positioning pin is further provided on the bottom of the U-shaped groove structure, and the positioning pin is used to insert into the threaded hole on the structural plate.

[0013] Preferably, the end of the installation screw inserted into the installation bracket is conical.

[0014] Preferably, the adsorption ring includes an adsorption ring body and reinforcing rods. One side of the adsorption ring body is fixed to the mounting structure, the reinforcing rods are fixed to the mounting structure, and both ends of the reinforcing rods are connected to the adsorption ring body.

[0015] Preferably, a bending structure is provided on the adsorption ring body.

[0016] Preferably, the diameter of the adsorption ring body is 3 - 5 mm.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows: An installation mechanism is provided for the structural plate of the fixture of the automobile fuel tank cap to be inserted, so that the tooling can be installed on the existing fixture of the automobile fuel tank cap, reducing the design and manufacturing costs of the tooling and making the tooling universal. An installation screw is provided, and the installation screw is threadedly connected to the installation bracket. The installation and disassembly of the tooling and the fixture of the automobile fuel tank cap can be quickly realized by rotating the installation screw. One end of the installation screw inserted into the installation bracket is a conical surface, which can gradually lock the fixture of the automobile fuel tank cap as the installation screw is screwed in. The adsorption ring is also provided with reinforcing rods, enhancing the structural strength of the adsorption ring body and making it not easily deformed. The adsorption ring is provided with a bending structure, which can avoid the handle of the fixture of the automobile fuel tank cap and facilitate installation. Description of the Drawings

[0018] Figure 1 is a perspective view of the anti-static tooling for the automobile fuel tank cap of the present utility model;

[0019] Figure 2 is a perspective view of the mounting structure of the anti-static tooling for the automobile fuel tank cap of the present utility model.

[0020] In the drawings: 1. Adsorption ring; 2. Mounting structure; 11. Adsorption ring body; 12. Reinforcing rods; 13. Bending structure; 21. Mounting bracket; 22. Installation screw; 23. Nut; 24. Positioning pin; 25. Handle. Detailed Embodiments

[0021] The drawings are only for illustrative purposes and cannot be construed as a limitation of this patent; for better illustration of this embodiment, some components in the drawings will be omitted, enlarged or reduced, and do not represent the actual size of the product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as a limitation of this patent.

[0022] In the attached drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the attached drawings. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the attached drawings are only for illustrative purposes and cannot be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0023] The technical solution of the present utility model will be further specifically described below through specific embodiments in conjunction with the attached drawings:

[0024] Embodiment 1

[0025] As Figure 1 shown, an anti-static tooling for an automobile fuel tank cap, characterized in that it includes an adsorption ring 1. The adsorption ring 1 is sleeved around the automobile fuel tank cap, and an installation structure 2 is further provided on the adsorption ring 1 for inserting the fuel tank cap fixture. When spraying the automobile fuel tank cap, first use the automobile fuel tank cap fixture to clamp the automobile fuel tank cap to fix the position of the automobile fuel tank cap. Then insert the structural plate of the automobile fuel tank cap fixture into the installation structure 2 to fix the tooling. In this process, the tooling can be directly installed on the existing automobile fuel tank cap fixture, making full use of the existing automobile fuel tank cap fixture, and enabling the design of the tooling to only focus on how to achieve the adsorption function without considering how to fix it on the automobile fuel tank cap, reducing the design difficulty and manufacturing cost. By making full use of the existing automobile fuel tank cap fixture, it can adapt to different automobile fuel tank cap fixtures to adapt to different automobile fuel tank caps, improving the versatility of the tooling. A fixing adsorption ring 1 is provided on the installation structure 2, and an adsorption area is formed inside the adsorption ring 1. The area of the adsorption area is larger than the area of the automobile fuel tank cap. Place the automobile fuel tank cap into the adsorption area. The adsorption ring 1 is made of a conductive material. When electrostatic spraying the automobile fuel tank cap, charges accumulate on the adsorption ring 1, forming an electric field in the adsorption space inside the adsorption ring 1, acting on the charges on the automobile fuel tank cap, reducing the degree of paint accumulation at the edge of the automobile fuel tank cap due to charge accumulation, so as to achieve the purpose of improving orange peel without causing edge sag.

[0026] As Figure 1As shown, the installation mechanism 2 includes an installation bracket 21 and an installation screw 22. The adsorption ring 1 is fixed to the outer surface of the installation bracket 21. The structural plate of the automobile fuel tank cap fixture can be inserted into the installation bracket 21, and the installation screw 22 is screwed into the installation bracket 21 to lock the structural plate inserted into the installation bracket 21. On the one hand, the installation bracket 21 is used to fix the position of the adsorption ring 1, and on the other hand, it can provide a space for the structural plate of the automobile fuel tank cap fixture to be inserted. In order to enable the structural plate of the automobile fuel tank cap fixture to be inserted smoothly, the available insertion space of the installation bracket 21 should be larger than the structural plate of the automobile fuel tank cap fixture, which results in a gap between the structural plate of the automobile fuel tank cap fixture and the installation bracket 21 after insertion, causing the tooling to shake. Therefore, an installation screw 22 is also provided. The installation screw 22 can be inserted into the installation bracket 21 and press against the structural plate of the automobile fuel tank cap fixture, so that it remains in close contact with the installation bracket 21 and does not shake.

[0027] As Figure 1 shown, the installation bracket 21 is of a U-shaped groove structure. The adsorption ring 1 is fixed to the outer surface of the bottom of the U-shaped groove structure. The structural plate is inserted into the groove of the U-shaped groove structure, and the installation screw 22 is installed on the groove wall of the U-shaped groove structure of the installation bracket 21 and abuts against the structural plate. The inside of the U-shaped groove structure of the installation bracket 21 is a placement space. After the structural plate of the automobile fuel tank cap fixture is inserted into the groove of the U-shaped groove structure, the bottom of the U-shaped groove structure and the two side groove walls limit the movement of the structural plate of the automobile fuel tank cap fixture from three directions. Then, the installation screw 22 is inserted into the groove wall of the U-shaped groove of the installation bracket 21 to block the groove opening of the U-shaped groove structure, so that the periphery of the structural plate of the automobile fuel tank cap fixture is sealed, ensuring that the structural plate of the automobile fuel tank cap fixture will not fall off from the U-shaped groove structure of the installation bracket 21.

[0028] As Figure 2 shown, a semi-circular notch is provided on the groove wall of the U-shaped groove structure. A nut 23 is fixedly connected to the outside of the U-shaped groove structure at the notch. The nut 23 is threadedly connected to the installation screw 22. To ensure the installation stability, the installation position of the installation screw 23 should be less than or equal to the thickness of the structural plate of the automobile fuel tank cap fixture from the bottom of the U-shaped groove structure. And in order for the installation bracket 21 to ensure that it can wrap around both sides of the structural plate of the automobile fuel tank cap fixture, the groove wall of the U-shaped groove structure needs to be equal to or slightly higher than the thickness of the structural plate of the automobile fuel tank cap fixture. To meet these two requirements simultaneously, a semi-circular notch is provided on the groove wall of the U-shaped groove structure, and the installation screw 22 is fixed at the notch. A nut 23 is also provided at the notch. The nut 23 is threadedly connected to the installation screw 22. The nut can provide a pre-tightening force on the installation screw 22 to prevent the installation screw 22 from falling out.

[0029] As Figure 2As shown, a handle 25 is also fixed to one end of the mounting screw 22 away from the mounting bracket 21 to drive the relative rotation of the mounting screw 22 and the nut 23. The user can directly tighten or loosen the mounting screw 22 through the handle without using other tools such as a wrench.

[0030] As Figure 2 shown, a positioning pin 24 is also provided on the bottom of the U-shaped groove structure. The positioning pin 24 can be inserted into the threaded hole on the structural plate of the automobile fuel tank cap fixture. The U-shaped groove structure of the mounting bracket 21 and the mounting screw 22 cannot restrict the movement of the structural plate of the automobile fuel tank cap fixture in the length direction of the mounting bracket 21. Therefore, it is necessary to provide a positioning pin 24 on the bottom of the U-shaped groove structure. The positioning pin 24 can be inserted into the threaded hole on the structural plate of the automobile fuel tank cap fixture, thereby locking the structural plate of the automobile fuel tank cap fixture and preventing it from moving.

[0031] Embodiment 2

[0032] This embodiment is similar to the above-mentioned Embodiment 1, except that, as Figure 2 shown, one end of the mounting screw 22 inserted into the mounting bracket 21 is conical. During the process of gradually screwing in the mounting screw 21, the conical surface begins to contact the fuel tank cap fixture. When they first come into contact, the tooling is not yet stable. As the mounting screw 21 is gradually tightened, the diameter of the contact surface between the mounting screw 21 and the structural plate of the automobile fuel tank cap fixture gradually becomes larger, gradually pressing the structural plate of the automobile fuel tank cap fixture, and finally achieving a fixing effect.

[0033] Embodiment 3

[0034] This embodiment is similar to the above-mentioned Embodiment 1, except that, as Figure 1 shown, the adsorption ring 1 includes an adsorption ring body 11 and a reinforcing rod 12. One side of the adsorption ring body 11 is fixed to the mounting structure 2, and the reinforcing rod 12 is fixed to the mounting structure 2. Both ends of the reinforcing rod 12 are connected to the adsorption ring body 11. The adsorption ring body 1 is a rod-shaped structure, and its contact surface with the mounting bracket 21 is limited, resulting in the problem of insufficient structural strength for connecting with the mounting bracket 21. Therefore, it is necessary to provide a reinforcing rod 12 to enhance the connection strength.

[0035] As Figure 1 shown, a bending structure 13 is provided on the adsorption ring body 11. The bending structure 13 can avoid the handle of the automobile fuel tank cap tooling and prevent installation interference.

[0036] As Figure 1 shown, the diameter of the adsorption ring body 11 is 3 - 5 mm. If the diameter of the adsorption ring body 11 is too small, there will be insufficient strength and it is easy to bend, reducing the anti-static effect. If the diameter is too large, it will cause the tooling to be too heavy, increasing the operation load and the difficulty of recovery. Therefore, the diameter of the adsorption ring body 11 should be 3 - 5 mm.

[0037] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. An anti-static tooling for an automobile fuel tank cap, characterized in that, It includes an adsorption ring (1), the adsorption ring (1) is sleeved around the car fuel tank cap, and an installation structure (2) into which a fuel tank cap fixture can be inserted is further provided on the adsorption ring (1). The installation structure (2) includes an installation bracket (21) and an installation screw (22). The adsorption ring (1) is fixed to the outer surface of the installation bracket (21). The structural plate of the car fuel tank cap fixture can be inserted into the installation bracket (21), and the installation screw (22) is screwed into the installation bracket (21) to lock the structural plate inserted into the installation bracket (21).

2. The anti-static tooling for an automobile fuel tank cap according to claim 1, characterized in that, The installation bracket (21) is of a U-shaped groove structure. The adsorption ring (1) is fixed to the outer surface of the bottom of the U-shaped groove structure. The structural plate is inserted into the U-shaped groove structure. The installation screw (22) is installed on the groove wall of the U-shaped groove structure of the installation bracket (21) and abuts against the structural plate.

3. The anti-static tooling for an automobile fuel tank cap according to claim 2, characterized in that, A semi-circular notch is provided on the groove wall of the U-shaped groove structure, and a nut (23) is fixedly connected to the outside of the U-shaped groove structure at the notch. The nut (23) is threadedly connected to the installation screw (22).

4. The anti-static tooling for an automobile fuel tank cap according to claim 3, characterized in that, A handle (25) is further fixed to the end of the installation screw (22) away from the installation bracket (21) to drive the relative rotation of the installation screw (22) and the nut (23).

5. The anti-static tooling for an automobile fuel tank cap according to claim 2, wherein A positioning pin (24) is further provided on the bottom of the U-shaped groove structure. The positioning pin (24) is used to insert into the threaded hole on the structural plate.

6. The anti-static tooling for an automobile fuel tank cap according to claim 1, wherein, The end of the installation screw (22) inserted into the installation bracket (21) is conical.

7. The anti-static tooling for an automobile fuel tank cap according to claim 1, characterized in that, The adsorption ring (1) includes an adsorption ring main body (11) and a reinforcing rod (12). One side of the adsorption ring main body (11) is fixed to the installation structure (2), the reinforcing rod (12) is fixed to the installation structure (2), and both ends of the reinforcing rod (12) are connected to the adsorption ring main body (11).

8. The anti-static tooling for an automobile fuel tank cap according to claim 7, characterized in that, A bending structure (13) is provided on the adsorption ring main body (11).

9. The anti-static tooling for an automobile fuel tank cap according to claim 7, characterized in that, The diameter of the adsorption ring main body (11) is 3 - 5 mm.

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