A scratch-resistant coating device for automotive plastic parts

Abstract

This utility model discloses an anti-scratch spraying device for automotive plastic parts, comprising a base plate, a conveyor box mounted on the upper end of the base plate, an mounting plate mounted on the top of the conveyor box, a spraying box mounted on the upper end of the mounting plate, a rotating mounting structure mounted inside the spraying box, and a spraying pipe mounted at the center of the wall of the mounting plate, the bottom end of the spraying pipe being connected to the upper end of the conveyor box. A motor-driven connecting disc drives four sets of rotating rods to revolve, while gears mesh with an external gear ring to force the lifting rod to rotate, achieving multi-angle, dead-angle-free rotation of the workpiece, ensuring uniform coating coverage on complex curved surfaces. The rotational motion directionally diffuses the coating, reducing dripping. Four mounting frames independently support the workpiece, allowing multiple parts to be sprayed in a single cycle. Workpieces are quickly clamped through fixing holes, and an exhaust pipe links to the recovery frames, real-time extraction of suspended coating particles, reducing volatile pollution.

Description

Technical Field

[0001] This utility model relates to the field of spraying technology, specifically to a spraying device for preventing scratches on the surface of automotive plastic parts. Background Technology

[0002] Automotive plastic parts often require a protective coating to improve their wear and scratch resistance. Traditional spraying processes often use fixed spray guns or simple rotating fixtures, which are prone to missed areas or inconsistent coating thickness when dealing with complex curved surfaces, affecting the scratch resistance. Furthermore, only a small number of parts can be processed at a time, and frequent manual loading and unloading interrupts the process. In addition, excessive paint spraying diffuses into the air, polluting the environment and increasing costs. The fixtures have low adaptability, and changing to different sized parts requires readjustment, affecting continuous production. Therefore, a new technical solution needs to be designed to address these issues. Utility Model Content

[0003] The purpose of this utility model is to provide a scratch-resistant coating device for automotive plastic parts, in order to solve the problems mentioned in the background art. In traditional spraying processes, fixed spray guns or simple rotating fixtures are often used, which can easily lead to missed areas or inconsistent coating thicknesses on complex curved surfaces, affecting the scratch-resistant effect. Furthermore, only a small number of workpieces can be processed at a time, and frequent manual loading and unloading interrupts the process. Excessive coating paint diffuses into the air, polluting the environment and increasing costs. Additionally, the fixture has low adaptability, requiring readjustment when changing to different sized workpieces, affecting continuous production.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a scratch-resistant spraying device for automotive plastic parts, comprising a base plate, a conveying box mounted on the upper end of the base plate, an mounting plate mounted on the top of the conveying box, a spraying box mounted on the upper end of the mounting plate, a rotating mounting structure mounted inside the spraying box, and a spraying pipe mounted at the center of the wall surface of the mounting plate, the bottom end of the spraying pipe being connected to the upper end of the conveying box;

[0005] The rotating mounting structure includes: a motor, a connecting plate, four rotating rods, four bearing sleeves, four lifting rods, four mounting frames, several fixing holes, a drive assembly, and a recovery assembly;

[0006] The motor is fixedly installed at the center of the upper end of the spraying box, and the drive end is movably inserted through the upper wall of the spraying box via a bearing. The connecting plate is fixedly installed below the drive end of the motor. One end of each of the four rotating rods is connected to the side wall of the connecting plate. The four bearing sleeves are fixedly installed at the other end of each of the four rotating rods. The top ends of each of the four lifting rods are movably embedded in the four bearing sleeves. The four mounting frames are installed at the bottom ends of each of the four lifting rods. Several fixing holes are respectively opened at the side walls of the four mounting frames. One end of the drive assembly is connected to the top ends of the four lifting rods, and the other end is fixedly installed on the upper inner wall of the spraying box. The recycling assembly communicates with the rear wall of the spraying box.

[0007] As a preferred embodiment of the anti-scratch spraying device for automotive plastic parts according to this utility model, the drive assembly includes: four gears and an external gear ring;

[0008] The four gears are respectively installed on the top of the four hoisting rods, and the external gear ring is fixedly installed on the upper wall of the spray box. All four gears mesh with the external gear ring.

[0009] As a preferred embodiment of the anti-scratch spraying device for automotive plastic parts according to this utility model, the recycling component includes: two recycling frames and an air extraction pipe;

[0010] The two recycling frames are respectively connected to both sides of the rear wall of the spraying box, and one end of the exhaust pipe is connected to the top of the two recycling frames.

[0011] As a preferred embodiment of the anti-scratch spraying device for automotive plastic parts according to this utility model, a fixing frame is installed at the connection position between the motor and the spraying box.

[0012] As a preferred embodiment of the anti-scratch spraying device for automotive plastic parts according to this utility model, an arc-shaped spray nozzle assembly is installed at the rear end of the side wall of the spraying pipe.

[0013] As a preferred embodiment of the anti-scratch spraying device for automotive plastic parts according to this utility model, the front end of the spraying box is provided with an operation inlet hole.

[0014] In a preferred embodiment of the anti-scratch spraying device for automotive plastic parts according to this utility model, the mounting frame is circularly distributed at the lower end of the lifting rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the design of this anti-scratch spraying device for automotive plastic parts is reasonable;

[0016] The motor-driven connecting plate drives four sets of rotating rods to revolve, while the gear meshes with the external gear ring to force the lifting rod to rotate, achieving multi-angle rotation of the workpiece without dead angles. This ensures uniform coating coverage on complex curved surfaces. Combined with the rotational motion, the coating is diffused in a directional manner, reducing drips. Furthermore, the four mounting frames independently support the workpiece, allowing multiple parts to be coated in a single cycle. The workpiece is quickly clamped through the fixing holes, and the air extraction pipe is linked to the recovery frame to extract suspended coating particles in real time, reducing volatile pollution. Attached Figure Description

[0017] Figure 1 This is a front-view three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention viewed from below;

[0019] Figure 3 This is a side sectional view of the present invention.

[0020] Figure 4 This is a schematic diagram of the structure at point A of this utility model.

[0021] In the diagram: 1. Base plate, 2. Conveying box, 3. Mounting plate, 4. Spraying box, 5. Spraying pipe, 6. Motor, 7. Connecting plate, 8. Rotating rod, 9. Bearing sleeve, 10. Lifting rod, 11. Mounting frame, 12. Fixing hole, 13. Gear, 14. External gear ring, 15. Recycling frame, 16. Air extraction pipe, 17. Fixing bracket, 18. Arc-shaped nozzle assembly, 19. Operation feed hole. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-4 This utility model provides a technical solution:

[0024] In this technical solution, an anti-scratch spraying device for automotive plastic parts includes a base plate 1, a conveyor box 2 installed on the upper end of the base plate 1, an mounting plate 3 installed on the top of the conveyor box 2, a spraying box 4 installed on the upper end of the mounting plate 3, a rotating mounting structure installed inside the spraying box 4, and a spraying pipe 5 installed at the center of the upper wall of the mounting plate 3, with the bottom end of the spraying pipe 5 connected to the upper end of the conveyor box 2.

[0025] The rotating mounting structure includes: a motor 6, a connecting plate 7, four rotating rods 8, four bearing sleeves 9, four lifting rods 10, four mounting frames 11, several fixing holes 12, a drive assembly, and a recovery assembly;

[0026] The motor 6 is fixedly installed at the center of the upper end of the spray box 4, and the drive end is movably inserted through the upper wall of the spray box 4 via a bearing. The connecting plate 7 is fixedly installed below the drive end of the motor 6. One end of each of the four rotating rods 8 is connected to the side wall of the connecting plate 7. The other end of each of the four rotating rods 8 is fixedly installed. The top ends of each of the four lifting rods 10 are movably embedded in the four bearing sleeves 9. The four mounting frames 11 are installed at the bottom of each of the four lifting rods 10. Several fixing holes 12 are respectively opened on the side walls of the four mounting frames 11. One end of the drive assembly is connected to the top end of each of the four lifting rods 10, and the other end is fixedly installed on the upper wall inside the spray box 4. The recovery assembly is connected to the rear wall of the spray box 4.

[0027] In this technical solution, when applying anti-scratch coating to the surface of automotive plastic parts, the operator first moves the device to a designated position, supports it using the base plate 1, and connects it to a designated control system. Then, the conveyor box 2 between the base plate 1 and the mounting plate 3 is connected to a paint conveying device. The paint conveyed by the device passes through the conveyor box 2 into the spray pipe 5, and is then evenly sprayed out through the arc-shaped nozzle assembly 18. The operator then drives the motor 6 at the top of the spray box 4 to operate slowly. The motor 6 drives the connecting plate 7 and four rotating rods 8 to rotate slowly. During the process, under the meshing action of the drive components, the four lifting rods 10 move along with the rotating rod 8 while rotating within the four bearing sleeves 9, causing the four mounting frames 11 to rotate slowly. During the rotation, the operator places the automotive plastic parts on the outside of the mounting frames 11 through the operation inlet 19 at the front end of the spray box 4, and installs the automotive plastic parts by inserting the pins into the fixing holes 12. Then, the box is rotated to the spraying position, and the automotive plastic parts are sprayed through the spray pipe 5. The suspended paint particles generated during the spraying process are recycled through the recycling component to reduce pollution.

[0028] In some technical solutions, reference Figure 1 The drive assembly includes: four gears 13 and an external gear ring 14;

[0029] Four gears 13 are respectively installed on the top of four lifting rods 10, and the outer gear ring 14 is fixedly installed on the upper inner wall of the spray box 4. All four gears 13 mesh with the outer gear ring 14.

[0030] In this technical solution, the motor 6 drives the connecting plate 7 to rotate four sets of rotating rods 8. At the same time, the gear 13 meshes with the external gear ring 14 to force the lifting rod 10 to rotate, so as to realize the workpiece rotating at multiple angles without dead angles, ensuring uniform coverage of the coating on complex curved surfaces. Combined with the rotational motion, the coating is diffused in a directional manner, reducing dripping.

[0031] In some technical solutions, reference Figure 1 The recycling components include: two recycling frames 15 and an extraction pipe 16;

[0032] The two recycling frames 15 are connected to the two sides of the rear wall of the spray box 4 respectively, and one end of the exhaust pipe 16 is connected to the top of the two recycling frames 15.

[0033] In this technical solution, one end of the extraction pipe 16 is connected to the paint negative pressure recovery equipment. The extraction pipe 16 is linked to the recovery frame 15 to extract suspended paint particles in real time, thereby reducing volatile pollution.

[0034] In some technical solutions, reference Figure 1 A fixing bracket 17 is installed at the connection position between the motor 6 and the spray box 4 to suppress operating vibration and extend the service life of the equipment. An arc-shaped nozzle assembly 18 is installed at the rear end of the side wall of the spray pipe 5 to directionally diffuse the coating in conjunction with the rotational motion, reducing dripping. An operation inlet hole 19 is opened at the front end of the spray box 4 to facilitate manual loading and unloading and abnormal handling. The mounting frame 11 is circularly distributed at the lower end of the hoisting rod 10 to accommodate workpieces of different sizes and can be quickly clamped through the fixing hole 12.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A kind of automobile plastic part surface scratch-proof spraying device, including bottom plate (1), it is characterized in that, A conveyor box (2) is installed on the upper end of the base plate (1), an installation plate (3) is installed on the top of the conveyor box (2), a spraying box (4) is installed on the upper end of the installation plate (3), a rotating installation structure is installed inside the spraying box (4), a spraying pipe (5) is installed at the center of the upper wall of the installation plate (3), and the bottom end of the spraying pipe (5) is connected to the upper end of the conveyor box (2); The rotating mounting structure includes: a motor (6), a connecting plate (7), four rotating rods (8), four bearing sleeves (9), four lifting rods (10), four mounting frames (11), several fixing holes (12), a drive assembly, and a recovery assembly; The motor (6) is fixedly installed at the center of the upper end of the spray box (4), and the drive end is movably inserted through the upper wall of the spray box (4) via a bearing. The connecting plate (7) is fixedly installed below the drive end of the motor (6). One end of each of the four rotating rods (8) is connected to the side wall of the connecting plate (7). The four bearing sleeves (9) are fixedly installed at the other end of each of the four rotating rods (8). The top ends of each of the four lifting rods (10) are movably embedded in the four bearing sleeves (9). The four mounting frames (11) are installed at the bottom of each of the four lifting rods (10). Several fixing holes (12) are respectively opened at the side walls of the four mounting frames (11). One end of the drive assembly is connected to the top end of each of the four lifting rods (10), and the other end is fixedly installed on the upper wall of the spray box (4). The recycling assembly is connected to the rear wall of the spray box (4).

2. The scratch-proof spraying device for the surface of a plastic part of an automobile according to claim 1, characterized in that, The drive assembly includes: four gears (13) and an external gear ring (14); The four gears (13) are respectively installed on the top of the four lifting rods (10), and the external gear ring (14) is fixedly installed on the upper inner wall of the spray box (4). All four gears (13) mesh with the external gear ring (14).

3. The scratch-proof spraying device for the surface of a plastic part of an automobile according to claim 1, characterized in that, The recycling assembly includes: two recycling frames (15) and an extraction pipe (16); The two recycling frames (15) are respectively connected to the two sides of the rear wall of the spray box (4), and one end of the exhaust pipe (16) is connected to the top of the two recycling frames (15).

4. The scratch-proof spraying device for the surface of a plastic part of an automobile according to claim 1, characterized in that, A fixing bracket (17) is installed at the connection position between the motor (6) and the spray box (4).

5. The scratch-proof spraying device for the surface of a plastic part of an automobile according to claim 1, characterized in that, An arc-shaped nozzle assembly (18) is installed at the rear end of the side wall of the spray pipe (5).

6. The scratch-proof spraying device for the surface of a plastic part of an automobile according to claim 1, characterized in that, The front end of the spray box (4) is provided with an operation feed hole (19).

7. The scratch-proof spraying device for the surface of a plastic part of an automobile according to claim 1, characterized in that, The mounting frame (11) is circularly distributed at the lower end of the hoisting rod (10).

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