A rotating spraying jig for automobile plastic parts

Abstract

The utility model discloses a kind of automobile plastic piece rotary spraying jigs, comprising: main body structure, the main body structure includes bottom plate and workbench, and bottom plate is provided with prop, prop workbench is set on the top of bottom plate by prop;Supporting structure is set on workbench, and the supporting structure includes circular rim and support plate, and support plate is located in rim interior for placing and supporting automobile plastic piece;Spraying structure is rotatably set on workbench, and the spraying structure includes spraying pipe, spraying pipe is designed as U shape, and multiple groups of spray head are equidistantly distributed on spraying pipe as U shape. Change the mode that plastic piece does not move in traditional fixed spraying, let coating can be more evenly covered on each surface of plastic piece, effectively solve the problem that coating is unevenly thick due to the distance from spray gun is different and the structure is shielded, greatly improve the uniformity of spraying.

Description

Technical Field

[0001] This utility model relates to the field of automotive plastic parts processing technology, specifically to a rotary spraying fixture for automotive plastic parts. Background Technology

[0002] In the automotive manufacturing industry, plastic parts are widely used in interior and exterior components such as dashboards, door panels, and bumpers due to their advantages of light weight, low cost, and high plasticity. To improve the appearance quality of these automotive plastic parts and enhance their corrosion resistance and wear resistance, they are typically treated with a coating process.

[0003] Currently, the painting of automotive plastic parts mainly employs the traditional fixed-position painting method. This involves fixing the plastic parts to a specific fixture, and then the operator uses a spray gun to spray the parts from multiple angles. However, this traditional painting method has numerous technical problems, severely impacting painting quality and production efficiency, specifically as follows: Poor coating uniformity is a problem because the plastic parts are stationary, making it difficult to achieve a completely even distribution of the paint sprayed from the spray gun. During the spraying process, surfaces closer to the spray gun will receive more paint, resulting in an overly thick coating; while areas farther from the spray gun or obstructed by structural elements will have a thinner coating. This uneven coating not only affects the aesthetics of automotive plastic parts and lowers the product's grade, but may also lead to differences in corrosion resistance and wear resistance in different areas due to inconsistent coating thickness, affecting the product's lifespan. For example, when spraying automotive door interior panels, some corners and recessed areas are difficult to reach, resulting in a thin coating or even missed areas. After a period of use, these areas are prone to damage due to friction and corrosion.

[0004] Therefore, we need to propose a rotary spraying fixture for automotive plastic parts. Utility Model Content

[0005] The purpose of this utility model is to provide a rotary spraying fixture for automotive plastic parts, which changes the traditional fixed spraying method where the plastic parts are stationary, allowing the paint to cover the various surfaces of the plastic parts more evenly. It effectively solves the problem of uneven coating thickness caused by different distances from the spray gun and structural obstruction, and greatly improves the uniformity of spraying, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A rotary spraying fixture for automotive plastic parts, comprising: The main structure includes a base plate and a workbench. Support columns are provided on the base plate, and the workbench is mounted on the base plate via the support columns. A support structure is provided on the workbench. The support structure includes a circular rim and a support plate, with the support plate located inside the rim for placing and supporting automotive plastic parts. The spraying structure is rotatably mounted on the worktable. The spraying structure includes a spray pipe with a U-shaped design and multiple sets of spray nozzles evenly distributed in a U-shape on the spray pipe.

[0007] Preferably, two sets of rotating seats are symmetrically arranged on the workbench, with the two sets of rotating seats located on both sides of the perimeter.

[0008] Preferably, the lower outer walls of both arms of the spray pipe are welded with side plates, and the outer walls of the two sets of side plates are provided with shafts that are rotatably mounted together with the two sets of rotating seats.

[0009] Preferably, the diameter of the spray tube is 3-5 cm larger than the diameter of the surrounding edge, and the lower end of the spray tube is 3-5 cm higher than the surrounding edge. Both sides of the fixing base are provided with stop blocks to limit the rotation angle of the spray tube and prevent the spray tube from rotating excessively.

[0010] Preferably, a motor is installed on the workbench, and a drive gear is connected to the output end of the motor. A driven gear is provided at the outer end of the shaft on one of the side plates, and the drive gear and the driven gear are meshed together.

[0011] Preferably, the workbench is provided with a U-shaped frame, and a storage tank for storing paint is provided on the U-shaped frame. A booster pump is installed at the bottom of the storage tank. The paint output end of the storage tank is connected to the interface at the top of the spray pipe through a pipe, and the pipe has sufficient length to allow the spray pipe to rotate.

[0012] Preferably, the support plate has holes distributed in a honeycomb pattern, and a conical hopper is provided at the bottom of the perimeter. The support plate is placed at the top opening of the conical hopper, and excess paint can flow into the conical hopper through the holes.

[0013] Preferably, a collection pipe is provided at the center of the bottom of the workbench, the collection pipe is connected to the bottom of the conical bucket, and a collection bucket coaxially arranged with the collection pipe is placed on the bottom plate for uniformly collecting excess paint.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model places automotive plastic parts on a support plate, using a support structure to stably support the plastic parts. During the spraying process, the plastic parts are relatively fixed in conjunction with the spraying structure, allowing them to rotate relative to the spray head. This design changes the traditional fixed spraying method where the plastic parts remain stationary, allowing the paint to cover all surfaces of the plastic parts more evenly. It effectively solves the problem of uneven coating thickness caused by different distances from the spray gun and structural obstruction, greatly improving the uniformity of the spraying. For example, when spraying automotive door interior panels, the corners and recessed areas can also fully receive paint during rotation, avoiding excessively thin coatings or even missed areas. This ensures the aesthetic appearance and product quality of the automotive plastic parts, while also making the corrosion resistance and wear resistance of different parts more consistent, extending the product's service life.

[0015] 2. The spray nozzle has a U-shaped design, with multiple sets of spray heads evenly distributed in a U-shape. This layout allows the spray heads to spray the rotating plastic part simultaneously from multiple angles, further enhancing the uniformity of paint distribution on the plastic part's surface and ensuring an all-around, no-dead-angle spraying effect.

[0016] 3. The support plate has a honeycomb-shaped perforation pattern, and a conical hopper is installed at the bottom of the perimeter. The support plate is placed at the top opening of the conical hopper, allowing excess paint to flow into it through the perforations. A collection pipe is located at the center of the bottom of the workbench, connecting to the bottom of the conical hopper. A collection bucket, coaxially aligned with the collection pipe, is placed on the bottom plate to collect excess paint. This design effectively collects excess paint dripping during the spraying process, preventing paint from dripping onto the workbench and causing pollution and waste. Furthermore, the collected paint can be recycled and reused, reducing production costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the workbench of this utility model; Figure 3 This is a schematic diagram of the structure of the support plate of this utility model; Figure 4 This is a schematic diagram of the structure of the collection bucket of this utility model.

[0018] In the diagram: 1. Base plate; 2. Support column; 3. Workbench; 4. Edge; 5. Support plate; 6. Spray pipe; 7. Side plate; 8. Rotary seat; 9. Stop block; 10. Motor; 11. U-shaped frame; 12. Storage tank; 13. Conical hopper; 14. Collection pipe; 15. Collection bucket. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 This utility model provides a technical solution: A rotary spraying fixture for automotive plastic parts, comprising: The main structure includes a base plate 1 and a workbench 3. A support column 2 is provided on the base plate 1, and the workbench 3 is set above the base plate 1 through the support column 2. A support structure is provided on the workbench 3. The support structure includes a circular rim 4 and a support plate 5. The support plate 5 is located inside the rim 4 and is used to place and support automotive plastic parts. The spraying structure is rotatably mounted on the workbench 3. The spraying structure includes a spray pipe 6, which is U-shaped and has multiple sets of spray nozzles evenly distributed in a U-shape on it.

[0021] Specifically, two sets of rotating seats 8 are symmetrically arranged on the workbench 3, located on both sides of the surrounding edge 4. Side plates 7 are welded to the lower outer walls of both arms of the spray pipe 6. Axles are mounted on the outer walls of the two sets of side plates 7 and are rotatably installed together with the two sets of rotating seats 8. The diameter of the spray pipe 6 is 3-5 cm larger than the diameter of the surrounding edge 4, and the lower end of the spray pipe 6 is 3-5 cm higher than the surrounding edge 4. Stops 9 are provided on both sides of the fixed seat to limit the rotation angle of the spray pipe 6 and prevent excessive rotation.

[0022] A motor 10 is installed on the workbench 3. The output end of the motor 10 is connected to a drive gear. A driven gear is installed on the outer end of the shaft on one of the side plates 7. The drive gear and the driven gear are meshed. A U-shaped frame 11 is installed on the workbench 3. A storage tank 12 for storing paint is installed on the U-shaped frame 11. A booster pump is installed at the bottom of the storage tank 12. The paint output end of the storage tank 12 is connected to the interface at the top of the spray pipe 6 through a pipe. The pipe is long enough for the spray pipe 6 to rotate.

[0023] The perimeter 4 of the support structure forms a circular limiting space, which limits the placement range of the plastic parts and prevents them from shifting during the painting process. The support plate 5 is placed horizontally inside the perimeter 4 and directly supports the automotive plastic parts (such as door interior panels, door handles, etc.). Through the cooperation between the perimeter 4 and the support plate 5, the plastic parts maintain a stable posture. The handles on both sides of the support plate 5 make it easy for operators to quickly pick up and put down the support plate 5, realizing convenient loading and unloading of plastic parts.

[0024] The U-shaped spray pipe 6 is arranged around the perimeter 4, with multiple sets of nozzles evenly distributed to ensure uniform distance between the nozzles and the surface of the plastic parts; the booster pump pressurizes the paint in the storage tank 12 and then transports it through the pipeline to the spray pipe 6, where it is sprayed out simultaneously by multiple sets of nozzles to form a uniform paint coverage area.

[0025] After the motor 10 starts, the drive gear at the output end drives the driven gear to rotate. The driven gear is fixedly connected to the shaft of the spray pipe 6, thereby driving the spray pipe 6 to rotate around the rotating seat 8. The rotational cooperation between the rotating seat 8 and the shaft ensures that the spray pipe 6 rotates smoothly. The stop block 9 limits the rotation angle (to avoid excessive rotation that could cause the pipe to entangle), so that the spray pipe 6 can reciprocate or rotate in a circle within the set range.

[0026] In summary, it can achieve uniform spraying, ensuring that the distance and contact time between the plastic part surface (including corners and recesses) and the nozzle are consistent, completely solving the problems of "thicker near and thinner far" and "missed coating" in traditional fixed spraying, and the coating thickness deviation is small; multiple sets of nozzles work simultaneously, and with the spray tube 6 rotating to cover, a single spray can complete the all-round coverage of the plastic part, eliminating the need for manual touch-up spraying, and shortening the spraying time compared to traditional methods.

[0027] For a preferred embodiment, please refer to Figure 1-4 : The support plate 5 has a honeycomb pattern of holes, and a conical hopper 13 is provided at the bottom of the rim 4. The support plate 5 is placed at the top opening of the conical hopper 13, and excess paint can flow into the conical hopper 13 through the holes. A collection pipe 14 is provided at the center of the bottom of the workbench 3, and the collection pipe 14 is connected to the bottom of the conical hopper 13. A collection bucket 15, which is coaxially arranged with the collection pipe 14, is placed on the bottom plate 1 to collect excess paint.

[0028] The honeycomb-shaped holes on the support plate 5 provide a flow channel for excess paint. During the spraying process, paint that does not adhere to the plastic parts drips onto the support plate 5 and seeps into the conical hopper 13 below through the holes. The conical hopper 13 is funnel-shaped and uses gravity to guide the paint to the bottom to avoid paint residue accumulation. The collection pipe 14 is connected to the bottom of the conical hopper 13 and guides the collected paint into the collection bucket 15 on the base plate 1 to achieve centralized collection of excess paint.

[0029] It can reduce paint waste, and the recycled paint can be reused after filtration, thus reducing raw material costs; it also prevents excess paint from remaining and hardening on the workbench and support structure, thus reducing the frequency of equipment cleaning and maintenance costs.

[0030] Please refer to Figure 1-3 Handles are provided on both sides of the support plate 5, which can be used to quickly insert the support plate 5 into the surrounding edge 4 or remove it.

[0031] The handles on both sides of the support plate 5 are designed as an integrated molding, and the material is the same as that of the support plate 5 (such as hard plastic or stainless steel), which makes it easy for the operator to hold and exert force. When picking up or putting down, the operator can quickly take the support plate 5 out of or into the perimeter 4 by holding the handle, without the need for tools, and the position of the handle does not affect the placement of plastic parts and the spraying process.

[0032] The support plate 5 can be quickly removed for cleaning to prevent the holes from being blocked by paint and ensure the normal operation of the recycling system. During the removal and placement process, the operator touches the support plate 5 with the handle to avoid direct contact with the surface of the plastic parts, prevent fingerprints and stains from contaminating the parts, and ensure the quality of the coating.

[0033] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A rotary spraying fixture for automotive plastic parts, characterized in that, include: The main structure includes a base plate (1) and a workbench (3). A support column (2) is provided on the base plate (1), and the workbench (3) is set above the base plate (1) through the support column (2). A support structure is set on the workbench (3). The support structure includes a circular rim (4) and a support plate (5). The support plate (5) is located inside the rim (4) and is used to place and support automotive plastic parts. The spraying structure is rotatably set on the workbench (3). The spraying structure includes a spraying pipe (6), which is U-shaped and has multiple sets of nozzles evenly distributed in a U-shape on the spraying pipe (6).

2. The rotary spraying fixture for automotive plastic parts according to claim 1, characterized in that: Two sets of rotating seats (8) are symmetrically arranged on the workbench (3), and the two sets of rotating seats (8) are located on both sides of the perimeter (4).

3. The rotary spraying fixture for automotive plastic parts according to claim 2, characterized in that: The lower ends of the two arms of the spray pipe (6) are welded with side plates (7), and the outer walls of the two sets of side plates (7) are provided with shafts and are rotatably installed together with the two sets of rotating seats (8).

4. The rotary spraying fixture for automotive plastic parts according to claim 2, characterized in that: The diameter of the spray pipe (6) is 3-5 cm larger than the diameter of the surrounding edge (4) and the lower end of the spray pipe (6) is 3-5 cm higher than the surrounding edge (4). Both sides of the fixing seat are provided with stop blocks (9) to limit the rotation angle of the spray pipe (6) and prevent the spray pipe (6) from rotating excessively.

5. The rotary spraying fixture for automotive plastic parts according to claim 3, characterized in that: A motor (10) is installed on the workbench (3). The output end of the motor (10) is connected to a drive gear. A driven gear is provided on the outer end of the shaft on a set of side plates (7). The drive gear and the driven gear are meshed together.

6. The rotary spraying fixture for automotive plastic parts according to claim 1, characterized in that: The workbench (3) is provided with a U-shaped frame (11), and a storage tank (12) for storing paint is provided on the U-shaped frame (11). A booster pump is installed at the bottom of the storage tank (12). The paint output end of the storage tank (12) is connected to the interface at the top of the spray pipe (6) through a pipe, and the pipe has a sufficient length for the spray pipe (6) to rotate.

7. The rotary spraying fixture for automotive plastic parts according to claim 1, characterized in that: The support plate (5) has holes distributed in a honeycomb pattern, and a conical hopper (13) is provided at the bottom of the rim (4). The support plate (5) is placed at the top opening of the conical hopper (13), and excess paint can flow into the conical hopper (13) through the holes.

8. The rotary spraying fixture for automotive plastic parts according to claim 7, characterized in that: The workbench (3) has a collection pipe (14) at the bottom center, which is connected to the bottom of the conical bucket (13). A collection bucket (15) coaxially arranged with the collection pipe (14) is placed on the bottom plate (1) for uniformly collecting excess paint.

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