A wheel hub paint spraying device

Abstract

The utility model relates to hub machining technical field, concretely is a kind of hub paint spraying device, including paint spraying device main body, mechanical arm spray gun and hub clamping mechanism, workbench is provided on paint spraying device main body, mechanical arm spray gun is installed on workbench, hub clamping mechanism is connected on workbench, hub clamping mechanism includes rotating component and attitude conversion component, rotating component is connected on workbench, attitude conversion component is connected on rotating component.In the utility model, through the collaborative work of rotating component and attitude conversion component in hub clamping mechanism, rotating component drives hub to rotate with fixed cylinder central axis as center, attitude conversion component can make two-section fixed cylinder and rotating rod gradually change from relative straight line state to included angle state, to realize the adjustment of hub multi-angle, can let mechanical arm spray gun carry out comprehensive and uniform spraying to the outer peripheral surface, inner peripheral surface and spoke inner wall etc. of hub.

Description

Technical Field

[0001] This utility model relates to the field of wheel hub processing technology, and specifically to a wheel hub painting device. Background Technology

[0002] A wheel rim is a cylindrical metal component, centered on an axle, that supports the tire's inner contour. Wheel rims come in a wide variety of types depending on their diameter, width, forming method, and materials. After die-casting, automotive wheel rims require painting for protection, aesthetics, and labeling. In customized or small-batch production environments with diverse product types and small quantities, setting up a complete production line is uneconomical. Flexible, point-to-point painting equipment allows for rapid changeovers and adjustments, making it more suitable for diverse needs.

[0003] Chinese Patent No. CN219765801U discloses an automotive wheel hub painting device, belonging to the field of wheel hub processing technology. The device includes a worktable, a turntable, a rotating assembly, a clamping assembly, a control assembly, an electric heating lamp, and a protective assembly. This invention uses the clamping assembly to clamp the wheel hub, the rotating assembly to rotate the wheel hub, and the control assembly to move the spray nozzle up and down to achieve uniform spraying. After spraying, the electric heating lamp heats the wheel hub to achieve rapid drying of the paint, significantly improving the painting efficiency of the wheel hub.

[0004] However, in the above technical solution, the wheel hub is clamped by the clamping component, the wheel hub is rotated by the rotating component, and the spray head is moved up and down by the control component to achieve the purpose of uniform spraying. However, the design of the clamping component and the rotating component can only realize the rotation of the wheel hub around a fixed central axis at a single angle. It cannot dynamically adjust the overall spatial posture of the wheel hub. Furthermore, it is not easy to paint the hidden parts such as the inner circumferential surface of the wheel hub and the inner wall of the spokes, as well as the special angle of the outer circumferential surface of the wheel hub when it is not in a horizontal posture, which affects the uniformity and integrity of the paint quality. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a wheel hub painting device.

[0006] The technical solution of this utility model is as follows: A wheel hub painting device includes a main body with a worktable on which a robotic arm spray gun is mounted; a wheel hub clamping mechanism connected to the worktable, comprising a rotating component and a posture transformation component, the rotating component being connected to the worktable and the posture transformation component being connected to the rotating component; the rotating component comprising a drive device, a fixed cylinder, a rotating rod, and a clamp, the drive device being connected to one side of the worktable and the fixed cylinder being connected to the other side of the worktable, the rotating rod being rotatably connected inside the fixed cylinder, both the fixed cylinder and the rotating rod being a two-section design, the two sections of the rotating rod being connected by a universal coupling, and the clamp... The fixture is connected to one end of the rotating rod, and the other end of the rotating rod is connected to the drive device to enable the rotating rod and the fixture to drive the hub to rotate around the central axis of the fixed cylinder. The attitude transformation component includes a telescopic device and an auxiliary rod. At least one telescopic device is provided. The telescopic device is rotatably connected to a protrusion on a section of the fixed cylinder. The other end of the telescopic device is rotatably connected to a connecting block, which is connected to another section of the fixed cylinder. Two symmetrically arranged auxiliary rods are connected to the two sections of the fixed cylinder at their respective ends. The auxiliary rods are arranged parallel to the telescopic device. The telescopic device extends and retracts, causing the two sections of the fixed cylinder and the rotating rod to gradually change from a relatively straight state to an angled state to achieve multi-angle spraying.

[0007] Preferably, the rotating assembly further includes a speed reducer, the input end of which is connected to the output end of the drive device, the output end of which is connected to one end of the rotating rod, and the speed reducer is connected to the worktable.

[0008] Preferably, each section of the fixed cylinder has bearings connected to both ends of its inner wall, and the bearings are connected to the rotating rod.

[0009] Preferably, a preset gap is provided between the two fixed cylinders, which is used to accommodate the universal coupling.

[0010] Preferably, the gap between the two fixed cylinders is connected with a bellows-shaped protective cover.

[0011] Preferably, each telescopic device is fitted with a protective cover, and the two ends of the protective cover are respectively connected to the protrusions on the connecting block and the fixed cylinder.

[0012] Preferably, one end of the rotating rod is connected to a flange, and the clamp and the flange are connected by a flange.

[0013] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects: In this invention, through the coordinated work of the rotating component and the attitude transformation component in the hub clamping mechanism, the rotating component drives the hub to rotate around the central axis of the fixed cylinder, and the attitude transformation component enables the two-section fixed cylinder and rotating rod to gradually change from a relatively straight state to an angled state, thereby realizing the multi-angle adjustment of the hub. This allows the robotic arm spray gun to comprehensively and evenly spray the outer circumferential surface, inner circumferential surface, and inner wall of the spokes of the hub, effectively solving the problems of spraying dead corners and uneven coating thickness in traditional painting methods. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a schematic diagram of the initial state of the wheel hub clamping structure; Figure 3 for Figure 2 Enlarged view of the structure at point A; Figure 4 A schematic diagram of the rotating rod structure when the hub clamping structure is bent. Reference numerals: 1. Main body of the painting device; 2. Mechanical arm spray gun; 3. Drive device; 4. Fixed cylinder; 5. Rotating rod; 6. Clamp; 7. Universal coupling; 8. Telescopic device; 9. Auxiliary rod; 10. Connecting block; 11. Reducer; 12. Bearing; 13. Bellows protective cover; 14. Protective cover; 15. Flange. Detailed Implementation

[0015] Example 1, as Figures 1-4 As shown, the present invention proposes a wheel hub painting device, including a painting device body 1, a robotic arm spray gun 2, and a wheel hub clamping mechanism. The painting device body 1 is provided with a worktable, and the robotic arm spray gun 2 is installed on the worktable. The robotic arm spray gun 2 adopts a mature robotic arm structure currently available on the market. The wheel hub clamping mechanism is connected to the worktable and includes a rotating component and an attitude transformation component. The rotating component is connected to the worktable, and the attitude transformation component is connected to the rotating component. The rotating assembly includes a drive unit 3, a fixed cylinder 4, a rotating rod 5, and a clamp 6. The drive unit 3 is connected to one side of the worktable and is an electric motor. The fixed cylinder 4 is connected to the other side of the worktable, and the rotating rod 5 is rotatably connected inside the fixed cylinder 4. Both the fixed cylinder 4 and the rotating rod 5 are two-section designs, and the two sections of the rotating rod 5 are connected by a universal coupling 7. The clamp 6 is connected to one end of the rotating rod 5. The clamp 6 uses a mature clamp structure available on the market, such as a three-jaw chuck. One end of the rotating rod 5 is connected to the drive unit 3 to enable the rotating rod 5 and the clamp 6 to drive the hub to rotate around the central axis of the fixed cylinder 4. The attitude transformation component includes a telescopic device 8 and an auxiliary rod 9. At least one telescopic device 8 is provided. The telescopic device 8 is rotatably connected to a protrusion on a section of fixed cylinder 4. The other end of the telescopic device 8 is rotatably connected to a connecting block 10 by a pin or hinge. The connecting block 10 is connected to another section of fixed cylinder 4. Each telescopic device 8 is fitted with a protective cover 14, and the two ends of the protective cover 14 are respectively connected to the protrusions on the connecting block 10 and the fixed cylinder 4; the telescopic device 8 is equipped with, but is not limited to, electric push rods and hydraulic cylinders, and the hydraulic cylinders have external hydraulic equipment to provide the necessary working conditions. Two symmetrically arranged auxiliary rods 9 are connected to two fixed cylinders 4 at their ends respectively. The auxiliary rods 9 are arranged parallel to the telescopic device 8. The telescopic device 8 extends and retracts, causing the two fixed cylinders 4 and the rotating rod 5 to gradually change from a relatively straight state to an angled state in order to achieve multi-angle spraying. Each section of the fixed cylinder 4 has a bearing 12 connected to both ends of its inner wall. The bearing 12 is connected to the rotating rod 5. The bearing 12 can ensure the connection between the fixed cylinder 4 and the rotating rod 5, so that the position of the rotating rod 5 inside the fixed cylinder 4 is stable, reducing friction and wear. A preset gap is provided between the two fixed cylinders 4 to accommodate the universal coupling 7; the gap between the fixed cylinders 4 is to prevent the fixed cylinders 4 from bending and affecting the universal coupling 7, and to prevent interference between the two. A bellows cover 13 is connected between the two fixed cylinders 4; the bellows cover 13 is used to prevent external oil and impurities from affecting the use of the universal coupling 7 and plays a protective role in it. One end of the rotating rod 5 is connected to the flange 15, and the clamp 6 is flange-connected to the flange 15; the presence of the flange 15 facilitates the replacement and installation of the clamp 6, and makes it convenient to clamp and fix different wheel hubs later.

[0016] Example 2, as Figures 1-3 As shown, this utility model proposes a wheel hub painting device. Compared with Embodiment 1, this embodiment describes the detailed structure of the rotating component. The rotating assembly also includes a speed reducer 11, the input end of which is connected to the output end of the drive device 3, and the output end of the speed reducer 11 is connected to one end of the rotating rod 5. The speed reducer 11 is connected to the workbench. The speed reducer 11 is used to adjust the speed of the motor and increase the torque.

[0017] In summary, when this utility model is in use, after the drive device 3 is started, it outputs rotational power through its own power output shaft to drive the input end of the reducer 11 connected to it. The output end of the reducer 11 then transmits the power to the rotating rod 5, thereby transmitting the power to the clamp 6, causing the clamp 6 and the hub held by the clamp 6 to rotate around the central axis of the fixed cylinder 4. At this time, the telescopic device 8 is in its initial state. The telescopic device 8, together with the two auxiliary rods 9, keeps the fixed cylinder 4 in an upright state. In the upright state, the force applied by the telescopic device 8 to the fixed cylinder 4 is balanced with the weight of the fixed cylinder 4 itself, the weight of the hub, and the interaction forces between other components. This balance of forces allows the fixed cylinder 4 to maintain a relatively static upright state, like a stable structural system. The forces between the components restrain each other, preventing the fixed cylinder 4 from tilting or shaking. The robotic arm spray gun 2 sprays the outer circumferential surface of the wheel hub. After spraying, the posture transformation component works, the telescopic device 8 moves, and the auxiliary rod 9 moves synchronously. The auxiliary rod 9 plays a supporting role. During the rotation and posture adjustment of the wheel hub, the fixed cylinder 4 and the rotating rod 5 change from a straight state to a bent or right-angled state, and the entire structure forms a new relatively stable state. The synergistic effect of the telescopic device 8 and the auxiliary rod 9 enables this new state to resist external interference and slight force changes to a certain extent, thereby maintaining the bent or right-angled state. This provides a stable posture for the robotic arm spray gun 2 to spray the inner circumferential wall of the wheel hub, ensuring the smoothness and safety of the wheel hub posture adjustment process. During the rotation and posture adjustment of the wheel hub, the fixed cylinder 4 and the rotating rod 5 change from a straight state to a bent or right-angled state, which facilitates the robotic arm spray gun 2 to spray its inner circumferential wall.

[0018] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A wheel hub painting device, characterized in that, include The main body of the spray painting device (1) is equipped with a workbench, on which a robotic arm spray gun (2) is installed. A hub clamping mechanism is connected to a worktable. The hub clamping mechanism includes a rotating component and an attitude transformation component. The rotating component is connected to the worktable, and the attitude transformation component is connected to the rotating component. The rotating assembly includes a drive unit (3), a fixed cylinder (4), a rotating rod (5), and a clamp (6). The drive unit (3) is connected to one side of the worktable, and the fixed cylinder (4) is connected to the other side of the worktable. The rotating rod (5) is rotatably connected inside the fixed cylinder (4). Both the fixed cylinder (4) and the rotating rod (5) are two-section designs. The two sections of the rotating rod (5) are connected by a universal coupling (7). The clamp (6) is connected to one end of the rotating rod (5). One end of the rotating rod (5) is connected to the drive unit (3) so that the rotating rod (5) and the clamp (6) drive the hub to rotate around the central axis of the fixed cylinder (4). The attitude transformation component includes a telescopic device (8) and an auxiliary rod (9). At least one telescopic device (8) is provided. The telescopic device (8) is rotatably connected to the protrusion of a fixed cylinder (4). The other end of the telescopic device (8) is connected to a connecting block (10). The connecting block (10) is rotatably connected to another fixed cylinder (4). The two symmetrically arranged auxiliary rods (9) are respectively connected to the two fixed cylinders (4). The auxiliary rods (9) are parallel to the telescopic device (8). The telescopic device (8) telescopically drives the two fixed cylinders (4) and the rotating rod (5) to gradually change from a relatively straight state to an angled state to achieve multi-angle spraying.

2. The wheel hub painting device according to claim 1, characterized in that, The rotating assembly also includes The input end of the speed reducer (11) is connected to the output end of the drive device (3), the output end of the speed reducer (11) is connected to one end of the rotating rod (5), and the speed reducer (11) is connected to the workbench.

3. The wheel hub painting device according to claim 1, characterized in that, Each section of the fixed cylinder (4) has bearings (12) connected to both ends of its inner wall. The bearings (12) are connected to the rotating rod (5).

4. The wheel hub painting device according to claim 1, characterized in that, A preset gap is provided between the two fixed cylinders (4) to accommodate the universal coupling (7).

5. A wheel hub painting device according to claim 4, characterized in that, The gap between the two fixed cylinders (4) is connected to a bellows cover (13).

6. A wheel hub painting device according to claim 1, characterized in that, Each telescopic device (8) is fitted with a protective cover (14), and the two ends of the protective cover (14) are respectively connected to the protrusions on the connecting block (10) and the fixing cylinder (4).

7. A wheel hub painting device according to claim 1, characterized in that, One end of the rotating rod (5) is connected to a flange (15), and the clamp (6) is flange-connected to the flange (15).

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