A rotary automobile wheel hub spraying device

Abstract

The utility model relates to the field of automobile wheel hub spraying technology, and disclose a rotary automobile wheel hub spraying device, including work table, the upper surface of work table is opened and is limited to slide the mouth, the slide in the limit sliding mouth is equipped with the slide platform, the upper surface fixed connection of slide platform has two U shaped boards, the top outer wall of two U shaped boards is connected with the rotating axle seat for bearing the unprocessed automobile wheel hub through bearing seat, the top inner wall fixed connection of U shaped board has the drive motor no. 2 that makes rotating axle seat rotates around the axis. The utility model carries out automatic spraying to the wheel hub on a station, meanwhile, the operator can disassemble the completed work and install the new to be sprayed wheel hub on another station, eliminates the time interval of traditional single station equipment waiting for feeding and discharging, makes the spraying operation almost continuous, greatly improves the equipment utilization and overall production efficiency.

Description

Technical Field

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

[0002] In the automotive manufacturing and after-sales maintenance field, wheel hubs are important exterior components of vehicles, and the quality of their surface coating directly affects the overall visual effect and corrosion resistance of the vehicle. Currently, there are two main methods for painting automotive wheel hubs: one is manual hand-held spray gun painting, and the other is automated painting production line.

[0003] A search revealed Chinese patent CN213133727U, which discloses a tooling for painting automotive wheel hubs. This device is convenient for installation and painting, and greatly improves the protection of the center hole, reduces powder and paint jamming, and ensures the accuracy of the center hole. However, during the operation of the equipment, the operator can only wait idly, which results in the inability to maximize the utilization rate of both the equipment and the personnel, thus reducing the efficiency of automotive wheel hub processing. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a rotary automobile wheel hub spraying device to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a rotary automobile wheel hub spraying device, including a worktable, a limiting slide opening on the upper surface of the worktable, a slide table slidably mounted in the limiting slide opening, two U-shaped plates fixedly connected to the upper surface of the slide table, a rotating shaft seat for supporting unprocessed automobile wheel hubs rotatably connected to the top outer wall of the two U-shaped plates via bearing seats, a second drive motor for rotating the rotating shaft seat along the axial direction fixedly connected to the top inner wall of the two U-shaped plates, a stop frame fixedly connected at the middle position of the upper surface of the worktable, a paint spray tube frame for spraying provided on one inner wall of the stop frame, a lead screw rotatably connected to the lower surface of the worktable via bearing seats, and the lead screw passes through the threaded cylinder of the slide seat at the bottom of the slide table and is threadedly connected to the threaded cylinder, and a first drive motor for rotating the lead screw along the axial direction is fixedly connected to one side of one of the bearing seats.

[0006] As a further embodiment of this utility model, the top of the baffle is provided with two sets of through holes, and a sliding rod is slidably connected in each of the two sets of through holes. An arc-shaped hollow plate is fixedly connected to the bottom of each of the two sets of sliding rods. Multiple air jet holes are provided on the opposite arc-shaped sides of the two arc-shaped hollow plates. The multiple air jet holes are connected to the inner cavity of the arc-shaped hollow plates. A connector is provided on the opposite side of the two arc-shaped hollow plates and is connected to its inner cavity. Both connectors are connected to an external air intake pipe.

[0007] As a further embodiment of this utility model, a horizontal plate is fixedly connected between the top ends of the two sliding rods located in the middle position, and a cylinder is fixedly connected between the lower surface of the horizontal plate and the top outer wall of the baffle.

[0008] As a further embodiment of this utility model, a threaded rod is fixedly connected to the top of the rotating shaft seat, and a locking knob for locking the car wheel hub is threadedly connected to the outer circumference of the threaded rod.

[0009] As a further embodiment of this invention, the lower half of the locking knob has a frustum-shaped structure that is smaller at the bottom and larger at the top.

[0010] As a further embodiment of this utility model, the paint spray tube frame includes an inlet pipe passing through one side of the baffle. One end of the inlet pipe is fixedly connected to a U-shaped tube for use with the inlet pipe. A vertical pipe for use with the U-shaped tube is fixedly connected to the middle pipe of the U-shaped tube. A second U-shaped tube for use with the U-shaped tube is fixedly connected to the top of the vertical pipe. Multiple paint spray heads are provided on one side of the U-shaped tube, the vertical pipe, and the second U-shaped tube.

[0011] As a further embodiment of this utility model, the length of the first U-shaped tube is less than that of the second U-shaped tube, and the paint spray nozzles on both are inclined toward the car wheel hub.

[0012] As a further embodiment of this utility model, the length of the vertical tube is greater than the height of the car wheel hub, and the car wheel hub is located in the cavity formed by the first U-shaped tube, the vertical tube, and the second U-shaped tube.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. This utility model adopts a dual-station design, which realizes parallel operation of the production process. While the wheel hubs on one station are being automatically sprayed, the operator can disassemble the completed workpieces and install new wheel hubs to be sprayed on the other station. This eliminates the time interval of waiting for loading and unloading of traditional single-station equipment, making the spraying operation almost continuous, which greatly improves the equipment utilization rate and overall production efficiency.

[0015] 2. This utility model uses a three-dimensional enclosed paint spraying tube frame composed of U-shaped tube one, vertical tube and U-shaped tube two, and is equipped with multiple paint spraying heads tilted towards the wheel hub. It can spray paint mist from multiple angles such as the inner side, side and top of the wheel hub at the same time, ensuring that the paint mist can evenly cover every complex curved surface and groove of the wheel hub, avoiding problems such as missed spraying and uneven coating, and significantly improving the spraying quality.

[0016] 3. This utility model uses a negative pressure paint mist treatment component composed of an arc-shaped hollow plate, a cylinder, and a connector. During spraying, the negative pressure generated by the external suction pipe directly draws and collects the flying and diffused overspray paint mist from near the source, reducing the diffusion of paint particles in the air. This not only protects the environment but also safeguards the health of the operators. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a schematic diagram of the U-shaped plate structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the retainer structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the arc-shaped hollow plate structure of this utility model.

[0021] Figure 5 This is a schematic diagram of the paint spray tube frame structure of this utility model.

[0022] The attached diagram is labeled as follows: 1. Workbench; 2. Limiting slide; 3. Slide table; 4. Stop; 5. Drive motor one; 6. U-shaped plate; 7. Rotary shaft seat; 8. Paint spray tube frame; 801. Inlet pipe; 802. U-shaped tube one; 803. Vertical pipe; 804. U-shaped tube two; 805. Paint spray head; 9. Drive motor two; 10. Threaded rod; 11. Locking knob; 12. Slide rod; 13. Arc-shaped hollow plate; 14. Horizontal plate; 15. Cylinder; 16. Connector; 17. Air jet hole; 18. Lead screw. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Reference Figures 1-5This utility model provides a rotary automobile wheel hub spraying device, including a worktable 1. The upper surface of the worktable 1 has a limiting slide 2, and a slide 3 is slidably mounted in the limiting slide 2. Two U-shaped plates 6 are fixedly connected to the upper surface of the slide 3 by bolts. A rotating shaft seat 7 for supporting unprocessed automobile wheel hubs is rotatably connected to the top outer wall of the two U-shaped plates 6 through bearing seats. A second drive motor 9 for rotating the rotating shaft seat 7 along the axial direction is fixedly connected to the top inner wall of the U-shaped plates 6 by bolts. A stop 4 is fixedly connected to the middle position of the upper surface of the worktable 1 by bolts. A paint spray tube frame 8 for spraying is provided on one inner wall of the stop 4. A lead screw 18 is rotatably connected to the lower surface of the worktable 1 through bearing seats. The lead screw 18 passes through the threaded cylinder of the bottom slide of the slide 3 and is threadedly connected to the threaded cylinder. A first drive motor 5 for rotating the lead screw 18 along the axial direction is fixedly connected to one side of one of the bearing seats by bolts.

[0025] In this application, an annular groove is axially provided on the inner wall of the threaded cylinder below the slide table 3. A nylon 66 damping ring with a Shore hardness of 85A is embedded in the groove. The continuous axial clamping force generated by its elastic deformation forms a helical angle interference fit with the surface of the lead screw 18 at 15°-20°. When the threaded pair is subjected to axial vibration load, the nylon insert can generate a maximum elastic compression of 0.3mm, which increases the friction coefficient between the thread contact surfaces from 0.15 to 0.68 (tested according to ASTM D1894 standard), effectively suppressing loosening displacement caused by thread springback.

[0026] It should be noted that drive motor 5 and drive motor 9 are existing technologies, using servo motors with encoders. The number of rotations and rotation angle of the motor output shaft are controllable and highly accurate. Those skilled in the art can set them according to actual needs, which will not be elaborated here.

[0027] After the workpiece is installed, the workpiece is transported and positioned. The drive motor 5 is started to drive the lead screw 18 to rotate. At this time, the slide table 3, which is threadedly connected to the lead screw, moves horizontally along the limit slide 2, thereby accurately sending the hub fixed on it into the spraying cavity formed by the paint tube frame 8.

[0028] The dual-station design enables parallel operation of the production process. While the wheel hubs are being automatically sprayed at one station, the operator can disassemble the completed products and install new wheel hubs to be sprayed at the other station. This eliminates the time interval of waiting for loading and unloading of traditional single-station equipment, making the spraying operation almost continuous and greatly improving equipment utilization and overall production efficiency.

[0029] Furthermore, two sets of through holes are provided on the top of the baffle 4. Sliding rods 12 are slidably connected in both sets of through holes. The bottom ends of the two sets of sliding rods 12 are fixedly connected to arc-shaped hollow plates 13 by bolts. Multiple air jet holes 17 are provided on the arc-shaped opposite sides of the two arc-shaped hollow plates 13. The multiple air jet holes 17 are connected to the inner cavity of the arc-shaped hollow plates 13. Connectors 16 connected to the inner cavity of the two arc-shaped hollow plates 13 are provided on the opposite sides of the two arc-shaped hollow plates 13. Both connectors 16 are connected to the external air intake pipe.

[0030] The negative pressure paint mist treatment mechanism, consisting of an arc-shaped hollow plate 13, a cylinder 15, and a connector 16, draws and collects the oversprayed paint mist directly from the vicinity of the source during spraying by generating negative pressure through an external suction pipe. This reduces the diffusion of paint particles in the air, protecting both the environment and the health of the operators.

[0031] Furthermore, a horizontal plate 14 is bolted between the top ends of the two sliding rods 12 located in the middle position, and a cylinder 15 is bolted between the lower surface of the horizontal plate 14 and the top outer wall of the baffle 4.

[0032] It should be noted that: Cylinder 15 is a power actuator that converts the pressure energy of compressed air into mechanical energy. By controlling the gas in and out, it drives the piston to perform linear reciprocating motion. It can be used in conjunction with a magnetic switch, proximity switch or photoelectric switch to achieve precise control of the extension and retraction displacement of the cylinder piston rod. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0033] During the spraying process, an external vacuum generator connected to the connector 16 can be activated. The cylinder 15 can push the horizontal plate 14 and the slide rod 12 connected to it downward, so that the two arc-shaped hollow plates 13 are close to the sides of the hub. Excess paint spray is sucked into the cavity of the arc-shaped hollow plate 13 from the jet hole 17 under negative pressure and is then removed through the connector, effectively reducing environmental pollution and improving paint utilization.

[0034] Among them, the top of the rotating shaft seat 7 is welded with a threaded rod 10, and the outer circumference of the threaded rod 10 is threaded with a locking knob 11 for locking the car wheel hub. The lower half of the locking knob 11 has a frustum-shaped structure that is smaller at the bottom and larger at the top.

[0035] For workpiece clamping and fixing, first, the car wheel hub to be painted is placed on the threaded rod 10 at the top of the rotating shaft seat 7, and then the locking knob 11 is tightened. Its unique frustum-shaped structure can adapt to wheel hubs with different center hole sizes and firmly presses them onto the rotating shaft seat 7 to ensure that the wheel hub will not loosen when rotating at high speed.

[0036] In this utility model, the paint spray tube frame 8 includes an inlet pipe 801 that passes through one side of the baffle 4. A U-shaped tube 802 that works with the inlet pipe 801 is welded to one end of the inlet pipe 801. A vertical tube 803 that works with the U-shaped tube 802 is welded to the middle of the U-shaped tube 802. A U-shaped tube 804 that works with the vertical tube 803 is welded to the top of the vertical tube 803. A plurality of paint spray heads 805 are provided on one side of the U-shaped tube 802, the vertical tube 803 and the U-shaped tube 804.

[0037] In the rotary spraying operation, after the wheel hub arrives at the spraying station, the drive motor 9 under the U-shaped plate 6 is started, driving the rotating shaft seat 7 and the car wheel hub on it to rotate at a constant speed around its own axis. At the same time, the paint is delivered to the paint tube rack 8 through the external paint supply system. The paint enters from the inlet pipe 801 and is diverted to the first U-shaped tube 802, the vertical tube 803 and the second U-shaped tube 804. Multiple paint spray heads 805 simultaneously spray paint mist from multiple angles such as the side, top and inside of the wheel hub onto the continuously rotating wheel hub surface.

[0038] The three-dimensional enclosed paint spray tube frame 8, composed of U-shaped tube 1 802, vertical tube 803 and U-shaped tube 2 804, and equipped with multiple paint spray heads 805 tilted towards the wheel hub, can spray paint mist from multiple angles such as the inner side, side and top of the wheel hub at the same time. This ensures that the paint mist can evenly cover every complex curved surface and groove of the wheel hub, avoids problems such as missed spraying and uneven coating, and significantly improves the spraying quality.

[0039] Furthermore, the length of U-shaped tube 802 is less than that of U-shaped tube 804, and the paint spray head 805 on both is inclined towards the car wheel hub. Since the paint spray head 805 is inclined towards the wheel hub, and the paint spray tube frame 8 covers the height range of the wheel hub, it ensures that the paint film can evenly cover the entire complex surface of the wheel hub without any dead corners. The length of vertical tube 803 is greater than the height of the car wheel hub, and the car wheel hub is located in the cavity formed by U-shaped tube 802, vertical tube 803 and U-shaped tube 804.

[0040] While one workpiece is being painted, the worker clamps and secures another unprocessed car wheel hub to another rotating bearing 7.

[0041] The use of this utility model involves the following steps:

[0042] S1: Workpiece clamping and fixing. First, put the car wheel hub to be painted onto the threaded rod 10 at the top of the rotating shaft seat 7, and then tighten the locking knob 11. Its unique frustum-shaped structure can adapt to wheel hubs with different center hole sizes and firmly press them onto the rotating shaft seat 7 to ensure that the wheel hub will not loosen when rotating at high speed.

[0043] S2: Workpiece conveying and positioning. Start the drive motor 5 to drive the lead screw 18 to rotate. At this time, the slide table 3, which is threadedly connected to the lead screw, moves horizontally along the limit slide 2, thereby accurately sending the hub fixed on it into the spraying cavity formed by the paint tube frame 8.

[0044] S3: Rotary spraying operation. When the wheel hub arrives at the spraying station, the drive motor 9 under the U-shaped plate 6 is started to drive the rotating shaft seat 7 and the car wheel hub on it to rotate at a constant speed around its own axis. At the same time, the paint is delivered to the paint tube rack 8 through the external paint supply system. The paint enters from the inlet pipe 801 and is diverted to the U-shaped tube 802, the vertical pipe 803 and the U-shaped tube 804. Multiple paint nozzles 805 spray paint mist from the side, top and inside of the wheel hub from multiple angles to the continuously rotating wheel hub surface.

[0045] S4: During the spraying process, the external vacuum generator connected to the connector 16 can be activated. The cylinder 15 can push the horizontal plate 14 and the slide rod 12 connected to it to move downward, so that the two arc-shaped hollow plates 13 are close to the sides of the hub. Excess splashed paint mist is sucked into the cavity of the arc-shaped hollow plate 13 from the jet hole 17 under negative pressure and is drawn away through the connector, effectively reducing environmental pollution and improving paint utilization.

[0046] S5: While one workpiece is being painted, the worker clamps and secures another unprocessed car wheel hub to another rotating bearing 7.

[0047] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0048] The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs.

[0049] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A rotary automotive wheel hub painting device, comprising a worktable (1), characterized in that: The upper surface of the workbench (1) has a limiting slide (2), and a slide (3) is slidably mounted in the limiting slide (2). Two U-shaped plates (6) are fixedly connected to the upper surface of the slide (3). A rotating shaft seat (7) for carrying unprocessed car wheel hubs is rotatably connected to the top outer wall of the two U-shaped plates (6) through a bearing seat. A second drive motor (9) for rotating the rotating shaft seat (7) along the axial direction is fixedly connected to the top inner wall of the U-shaped plate (6). A stop (4) is fixedly connected to the middle position of the upper surface of the workbench (1). A paint spray tube frame (8) for spraying is provided on one inner wall of the stop (4). A lead screw (18) is rotatably connected to the lower surface of the workbench (1) through a bearing seat. The lead screw (18) passes through the threaded cylinder of the bottom slide of the slide (3) and is threadedly connected to the threaded cylinder. A first drive motor (5) for rotating the lead screw (18) along the axial direction is fixedly connected to one side of one of the bearing seats.

2. The rotary automotive wheel hub spraying device according to claim 1, characterized in that: The top of the baffle (4) is provided with two sets of through holes, and a sliding rod (12) is slidably connected in each of the two sets of through holes. The bottom of each set of sliding rods (12) is fixedly connected with an arc-shaped hollow plate (13). Multiple air jet holes (17) are provided on the arc-shaped opposite sides of the two arc-shaped hollow plates (13). The multiple air jet holes (17) are connected to the inner cavity of the arc-shaped hollow plate (13). A connector (16) is provided on the opposite side of the two arc-shaped hollow plates (13) and is connected to its inner cavity. Both connectors (16) are connected to the external air intake pipe.

3. The rotary automobile wheel hub spraying device according to claim 2, characterized in that: A horizontal plate (14) is fixedly connected between the top ends of the two slide rods (12) located in the middle position, and a cylinder (15) is fixedly connected between the lower surface of the horizontal plate (14) and the top outer wall of the baffle (4).

4. The rotary automobile wheel hub spraying device according to claim 1, characterized in that: The top of the rotating shaft seat (7) is fixedly connected to a threaded rod (10), and a locking knob (11) for locking the car wheel hub is threadedly connected to the outer circumference of the threaded rod (10).

5. The rotary automobile wheel hub spraying device according to claim 4, characterized in that: The lower half of the locking knob (11) has a frustum-shaped structure that is smaller at the bottom and larger at the top.

6. The rotary automobile wheel hub spraying device according to claim 1, characterized in that: The paint spray tube frame (8) includes an inlet pipe (801) passing through one side of the baffle (4). One end of the inlet pipe (801) is fixedly connected to a U-shaped tube (802) that works with the inlet pipe (801). A vertical tube (803) that works with the U-shaped tube (802) is fixedly connected to the middle pipe. A U-shaped tube (804) that works with the vertical tube (803) is fixedly connected to the top of the vertical tube (803). Multiple paint spray heads (805) are provided on one side of each of the U-shaped tube (802), the vertical tube (803), and the U-shaped tube (804).

7. The rotary automobile wheel hub spraying device according to claim 6, characterized in that: The length of the first U-shaped tube (802) is less than that of the second U-shaped tube (804), and the paint spray nozzles (805) on both are inclined toward the car wheel hub.

8. A rotary automotive wheel hub spraying device according to claim 6, characterized in that: The length of the vertical tube (803) is greater than the height of the car wheel hub, and the car wheel hub is located in the cavity formed by the first U-shaped tube (802), the vertical tube (803) and the second U-shaped tube (804).

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