Spraying device adaptive to free-form surface

Abstract

The utility model discloses a spraying device adaptive to a free-form surface, and relates to the technical field of spraying equipment.The spraying device comprises a base, a platform assembly installed on the base and two traction assemblies installed at the bottom of the base, four sliding rails distributed at equal intervals are fixedly connected to the outer wall of the top of the base, and the platform assembly is slidably installed on two of the sliding rails; the platform assembly comprises a platform body connected to the two sliding rails in a sliding mode, two symmetrically-arranged limiting assemblies are installed on the outer wall of the bottom of the platform body, and grooves matched with the limiting assemblies are formed in the outer walls of the opposite sides of the two sliding rails. The two traction assemblies are arranged on the base, the platform assembly is conveniently and directly driven to move through the arrangement of the two traction assemblies, parts needing to be sprayed are conveniently placed through the arrangement of the platform assembly, and the traction assemblies drive the platform assembly to move so that the parts on the platform assembly can be conveniently and evenly sprayed; and meanwhile, comprehensive spraying can be conveniently carried out on parts with large sizes.

Description

Technical Field

[0001] This application relates to the field of spraying equipment technology, and in particular to a spraying device adapted to free-form surfaces. Background Technology

[0002] Spraying technology is widely used in industrial production, especially for spraying complex free-form surfaces. Traditional spraying equipment often struggles to achieve uniform coverage and high-quality coating. With the development of industrial automation, more and more spraying robots are being used in this field. However, existing spraying equipment still has many shortcomings.

[0003] A search revealed Chinese Patent Publication No. CN105413921A, which discloses a five-degree-of-freedom hybrid device suitable for spraying large curved surfaces. This device includes a base, a motion platform, a frame, and two identical first and second spraying modules. The key feature is that the frame comprises two identical first and second triangular frames, which are fixedly mounted parallel to each other on the base. Guide rails are provided on the two inner sides of each triangular frame. The two spraying modules are respectively mounted on the inner guide rails on both sides of the two triangular frames, and the spraying modules move up and down along the inner guide rails of the triangular frames. Each spraying module includes a slide rail, a six-pair parallel planar mechanism, and a telescopic support chain, forming a five-degree-of-freedom spatial hybrid mechanism. The six-pair planar mechanism is mounted on the slide rail. The six-pair parallel planar mechanism includes a first slider, a second slider, a first connecting rod, a second connecting rod, and a third connecting rod. The first slider, the second slider, and the slide rail are interconnected via sliding joints, and the first slider and the first connecting rod are interconnected via revolute joints.

[0004] The aforementioned patent has the following shortcomings regarding a five-degree-of-freedom hybrid device suitable for large curved surface spraying: the aforementioned patent uses a motion platform on the base, but in actual operation, the motion platform is inconvenient to drive manually, and it is also inconvenient to drive the motion platform when spraying some large parts. Utility Model Content

[0005] To address the problem of inconvenient movement of the motion platform in existing spraying devices during actual use, this application provides a spraying device adapted to freeform surfaces.

[0006] This application provides a spraying device adapted to freeform surfaces, including a base, a platform assembly mounted on the base, and two traction assemblies mounted on the bottom of the base. Four equally spaced slide rails are fixedly connected to the top outer wall of the base. The platform assembly is slidably mounted on two of the slide rails. The platform assembly includes a platform body slidably connected to the two slide rails, and two symmetrically arranged limiting assemblies are installed on the bottom outer wall of the platform body. The outer wall of the two slide rails on opposite sides is provided with grooves that match the limiting assemblies.

[0007] By adopting the above structure, the platform component that is slidably installed on the base facilitates the placement of the parts to be sprayed, the two traction components facilitate the direct sliding of the platform component on the base, the slide rail facilitates the sliding installation of the platform component, and the limiting component facilitates the fixing of the platform body on the slide rail.

[0008] The traction assembly includes a take-up roller rotatably connected to the bottom of the base, and a traction cable is wound around the outer wall of the take-up roller.

[0009] By adopting the above structure, the winding rollers facilitate the winding and unwinding of the traction cable.

[0010] A servo motor is fixedly connected to the bottom outer wall of the base, and the output shaft of the servo motor is fixedly connected to the take-up roller.

[0011] By adopting the above structure, the servo motor can be used to directly drive the winding roller to rotate, and the winding roller can be used to directly wind and release the traction cable when it rotates.

[0012] The traction assembly also includes a fixed pulley rotatably connected to the outer wall of the base, and the traction cable on the take-up roller passes through the fixed pulley and is fixedly connected to the platform body.

[0013] By adopting the above structure, the traction direction of the traction cable can be easily adjusted by setting the fixed pulley, thereby facilitating the movement of the platform body by pulling the traction cable.

[0014] The limiting component includes a limiting seat fixedly connected to the platform body, and a rectangular opening is provided on one outer wall of the limiting seat. A driving seat is slidably connected to the inner wall of the rectangular opening, and the specifications of the driving seat match the specifications of the groove. A rubber pad is fixedly connected to one outer wall of the driving seat.

[0015] By adopting the above structure, the drive seat can be easily slidably installed by setting the limit seat. The drive seat is inserted into the groove, and the rubber pad and the groove are pressed together to make contact, thereby making it easy to fix the platform body on the slide rail.

[0016] The inner walls of both sides of the limiting seat are rotatably connected to the same bidirectional screw, and the outer wall of the bidirectional screw is screwed with two symmetrically arranged threaded sleeves.

[0017] By adopting the above structure, the bidirectional screw can be easily rotated and installed by setting the limit seat. The rotation of the bidirectional screw directly drives the two threaded sleeves to move towards or away from each other.

[0018] Both of the threaded sleeves have connecting plates rotatably connected to their outer walls, and one end of each connecting plate is rotatably connected to the drive seat.

[0019] By adopting the above structure, the drive connecting plate is driven to slide out by the two threaded sleeves moving in opposite directions, and the drive seat is driven to retract into the limit box by moving in opposite directions.

[0020] A worm gear is fixedly connected at the midpoint of the bidirectional screw, a worm is rotatably connected to the inner wall of one side of the limiting seat, and the worm and the worm gear mesh with each other. A servo motor is fixedly connected to the outer wall of one side of the limiting seat, and the output shaft of the servo motor is fixedly connected to the worm.

[0021] By adopting the above structure, the worm gear is directly driven to rotate by the servo motor. When the worm gear rotates, it directly drives the bidirectional screw to rotate through the worm wheel. When the bidirectional screw rotates, it directly drives the drive seat to slide.

[0022] In summary, the beneficial effects of this application are as follows:

[0023] 1. This application provides two traction components on the base. The two traction components facilitate the direct driving of the platform component to move. The platform component facilitates the placement of the parts to be sprayed. The traction components drive the platform component to move, thereby facilitating the uniform spraying of the parts on it. At the same time, it is convenient to spray larger parts comprehensively.

[0024] 2. This application provides a limiting component on the platform body. The limiting component facilitates fixing the platform body on the slide rail, thereby ensuring the stability of the platform body and preventing the platform body from shaking and affecting the normal spraying of parts. Attached Figure Description

[0025] Figure 1 This is an overall schematic diagram of this application;

[0026] Figure 2 This is a three-dimensional schematic diagram of the base of this application;

[0027] Figure 3 This is a schematic diagram of the platform components in this application;

[0028] Figure 4 This is a schematic diagram of the limiting component of this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Base; 2. Traction assembly; 3. Platform assembly; 4. Take-up roller; 5. Traction cable; 6. Fixed pulley; 7. Servo motor; 8. Slide rail; 9. Groove; 10. Platform body; 11. Limiting assembly; 12. Limiting seat; 13. Servo motor; 14. Bidirectional screw; 15. Threaded sleeve; 16. Connecting plate; 17. Drive seat; 18. Rubber pad; 19. Worm gear; 20. Worm wheel. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-4 This application is described in further detail.

[0031] Please see Figure 1-3 A spraying device adapted to free-form surfaces is disclosed. When spraying large parts with curved surfaces, the robotic arm cannot fully cover the parts, so the parts need to be moved during the spraying process to ensure comprehensive spraying. The device includes a base 1, a platform assembly 3 mounted on the base 1, and two traction assemblies 2 mounted on the bottom of the base 1. The traction assemblies 2 are designed to facilitate direct pulling of the platform assembly 3, thereby ensuring comprehensive spraying of the parts on the platform assembly 3. Four equally spaced slide rails 8 are fixedly connected to the top outer wall of the base 1. The platform assembly 3 is slidably mounted on two of the slide rails 8. The platform assembly 3 includes a platform body 10 slidably connected to the two slide rails 8. Two symmetrically arranged limiting assemblies 11 are installed on the bottom outer wall of the platform body 10. The limiting assemblies 11 on the platform body 10 facilitate fixing the platform body 10 to the slide rails 8. The outer walls of the two slide rails 8 on opposite sides are provided with grooves 9 that match the limiting assemblies 11, which helps to maintain the stability of the platform body 10.

[0032] In use, the platform component 3, which is slidably mounted on the base 1, facilitates the placement of the parts to be sprayed. The two traction components 2 facilitate the direct sliding of the platform component 3 on the base 1. The slide rail 8 facilitates the sliding installation of the platform component 3. The limiting component 11 facilitates the fixing of the platform body 10 on the slide rail 8.

[0033] Reference Figure 1-2 The traction assembly 2 includes a take-up roller 4 rotatably connected to the bottom of the base 1, and a traction steel cable 5 is wound around the outer wall of the take-up roller 4. The take-up roller 4 facilitates the winding and unwinding of the traction steel cable 5. A servo motor 7 is fixedly connected to the bottom outer wall of the base 1, and the output shaft of the servo motor 7 is fixedly connected to the take-up roller 4. The servo motor 7 facilitates the direct drive of the take-up roller 4 to rotate. When the take-up roller 4 rotates, it is convenient to directly wind and unwind the traction steel cable 5.

[0034] Reference Figure 2 The traction assembly 2 also includes a fixed pulley 6 rotatably connected to the outer wall of the base 1. The fixed pulley 6 facilitates the adjustment of the direction of the traction cable 5. The traction cable 5 on the winding roller 4 passes through the fixed pulley 6 and is fixedly connected to the platform body 10. The fixed pulley 6 facilitates the adjustment of the traction direction of the traction cable 5, thereby facilitating the movement of the platform body 10 by pulling the traction cable 5.

[0035] Reference Figure 3-4The limiting component 11 includes a limiting seat 12 fixedly connected to the platform body 10. The limiting seat 12 facilitates the fixing of the limiting component 11 to the platform body 10. A rectangular opening is provided on one outer wall of the limiting seat 12. A drive seat 17 is slidably connected to the inner wall of the rectangular opening. The specifications of the drive seat 17 match the specifications of the groove 9. A rubber pad 18 is fixedly connected to one outer wall of the drive seat 17. The rubber pad 18 contacts the inner wall of the groove 9, thereby increasing the friction between the limiting seat 12 and the groove 9. The limiting seat 12 facilitates the sliding installation of the drive seat 17. The drive seat 17 is inserted into the groove 9, and the rubber pad 18 presses against the groove 9, thereby facilitating the fixing of the platform body 10 to the slide rail 8.

[0036] Reference Figure 4 The inner walls of both sides of the limiting seat 12 are rotatably connected to the same bidirectional screw 14, and the outer wall of the bidirectional screw 14 is screwed with two symmetrically arranged threaded sleeves 15. The setting of the limiting seat 12 facilitates the rotation and installation of the bidirectional screw 14. The rotation of the bidirectional screw 14 directly drives the two threaded sleeves 15 to move towards or away from each other.

[0037] Reference Figure 4 The outer walls of the two threaded sleeves 15 are rotatably connected to connecting plates 16. The connecting plates 16 are rotatably connected to the threaded sleeves 15. The movement of the threaded sleeves 15 drives the connecting plates 16 to move. One end of each connecting plate 16 is rotatably connected to the drive seat 17. The movement of the two threaded sleeves 15 towards each other drives the connecting plates 16 to slide out of the drive seat 17. Conversely, the movement of the two threaded sleeves 15 towards each other drives the drive seat 17 to retract into the limit seat 12.

[0038] Reference Figure 4 A worm gear 20 is fixedly connected at the midpoint of the bidirectional screw 14. A worm 19 is rotatably connected to the inner wall of one side of the limiting seat 12, and the worm 19 and the worm gear 20 mesh with each other. A servo motor 13 is fixedly connected to the outer wall of one side of the limiting seat 12, and the output shaft of the servo motor 13 is fixedly connected to the worm 19. The servo motor 13 directly drives the worm 19 to rotate. When the worm 19 rotates, it directly drives the bidirectional screw 14 to rotate through the worm gear 20. When the bidirectional screw 14 rotates, it directly drives the drive seat 17 to slide.

[0039] The implementation principle of this application is as follows: When in use, the parts to be sprayed are placed on the platform body 10. When the platform body 10 needs to be moved, the servo motors 13 in the two traction components 2 rotate in opposite directions, one forward and the other in reverse. The servo motors 13 drive the winding roller 4 to rotate to wind and release the traction steel cable 5, thereby directly pulling the platform body 10 to move. When the platform body 10 moves to the designated position, the servo motors 13 in the two limit components 11 are started. When the servo motors 13 are started, they directly drive the worm gear 19 to rotate. When the worm gear 19 rotates, it drives the bidirectional screw 14 to rotate through the worm wheel 20. When the bidirectional screw 14 rotates, it directly drives the two threaded sleeves 15 to move towards each other. When the threaded sleeves 15 move, they directly drive the drive seat 17 to press into the groove 9 through the connecting plate 16, thereby fixing the platform body 10 on the slide rail 8.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A spraying device adapted to free-form surfaces, comprising a base (1), a platform assembly (3) mounted on the base (1), and two traction assemblies (2) mounted on the bottom of the base (1), characterized in that: The base (1) has four equally spaced slide rails (8) fixedly connected to its top outer wall. The platform assembly (3) is slidably mounted on two of the slide rails (8). The platform assembly (3) includes a platform body (10) slidably connected to the two slide rails (8). The bottom outer wall of the platform body (10) is equipped with two symmetrically arranged limiting components (11). The outer walls of the two slide rails (8) on opposite sides are provided with grooves (9) that match the limiting components (11).

2. The spraying device adapted to free-form surfaces according to claim 1, characterized in that: The traction assembly (2) includes a take-up roller (4) rotatably connected to the bottom of the base (1), and a traction cable (5) is wound around the outer wall of the take-up roller (4).

3. The spraying device adapted to free-form surfaces according to claim 2, characterized in that: A servo motor (7) is fixedly connected to the bottom outer wall of the base (1), and the output shaft of the servo motor (7) is fixedly connected to the take-up roller (4).

4. A spraying device adapted to free-form surfaces according to claim 3, characterized in that: The traction assembly (2) also includes a fixed pulley (6) rotatably connected to the outer wall of the base (1), and the traction cable (5) on the take-up roller (4) passes through the fixed pulley (6) and is fixedly connected to the platform body (10).

5. A spraying device adapted to free-form surfaces according to claim 4, characterized in that: The limiting component (11) includes a limiting seat (12) fixedly connected to the platform body (10), and a rectangular opening is provided on one side of the outer wall of the limiting seat (12). A drive seat (17) is slidably connected to the inner wall of the rectangular opening, and the specifications of the drive seat (17) match the specifications of the groove (9). A rubber pad (18) is fixedly connected to one side of the outer wall of the drive seat (17).

6. A spraying device adapted to free-form surfaces according to claim 5, characterized in that: The inner walls of both sides of the limiting seat (12) are rotatably connected to the same bidirectional screw (14), and the outer wall of the bidirectional screw (14) is screwed with two symmetrically arranged threaded sleeves (15).

7. A spraying device adapted to free-form surfaces according to claim 6, characterized in that: The outer walls of the two threaded sleeves (15) are rotatably connected to connecting plates (16), and one end of each connecting plate (16) is rotatably connected to the drive seat (17).

8. A spraying device adapted to free-form surfaces according to claim 7, characterized in that: A worm gear (20) is fixedly connected at the midpoint of the bidirectional screw (14). A worm (19) is rotatably connected to the inner wall of one side of the limiting seat (12), and the worm (19) and the worm gear (20) mesh with each other. A servo motor (13) is fixedly connected to the outer wall of one side of the limiting seat (12), and the output shaft of the servo motor (13) is fixedly connected to the worm (19).

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