Uniform powder spraying equipment for metal surface

Abstract

The invention relates to uniform powder spraying equipment for a metal surface, the uniform powder spraying equipment comprises a mounting seat, a base, a protective cylinder and a powder spraying assembly, the axis of the protective cylinder is vertical, the protective cylinder comprises two half cylinders, the bottoms of the two half cylinders are slidably connected to the base, the two half cylinders slide close to each other or away from each other, and the two half cylinders are arranged on the mounting seat. A powder suction groove is formed in the middle of the base, sliding grooves are formed in the two ends, away from each other, of the powder suction groove, a two-way lead screw is rotationally connected into the sliding grooves, sliding blocks are connected to the bottoms of the two half cylinders, the sliding blocks are slidably connected to the sliding grooves, and the two sliding blocks are in threaded connection to the two ends of the two-way lead screw; the powder spraying assembly is arranged on the two half-cylinder assemblies; and the bottom of the base is rotationally connected to the mounting seat. The moving distance of the half cylinders is small, the stroke is reduced, the moving speed of the half cylinders is high, the workpieces cannot be affected, the efficiency of feeding the workpieces into the cylinders is high, and the production efficiency of the workpieces is high.

Description

Technical Field

[0001] This application relates to the field of metal surface processing, and in particular to a uniform powder spraying device for metal surfaces. Background Art

[0002] Electrostatic spraying is a spraying method that uses a high-voltage electrostatic field to make negatively charged paint particles move in a direction opposite to the electric field and adsorb the paint particles on the surface of the workpiece. The electrostatic spraying equipment consists of a spray gun, a spray cup, and a high-voltage power supply for electrostatic spraying. During operation, the spray gun or spray disc and spray cup of the electrostatic spraying are partially connected to the negative electrode, the workpiece is connected to the positive electrode and grounded, and under the action of the high voltage of the high-voltage power supply, an electrostatic field is formed between the end of the spray gun (or spray disc, spray cup) and the workpiece. The electric field force received by the paint particles is proportional to the voltage of the electrostatic field and the charge amount of the paint particles.

[0003] In the related art, powder electrostatic spray guns are generally arranged on both sides of the spraying line. Metal structure products are hung on metal racks and move through between the spray guns on both sides. The powder electrostatic spray guns move up and down to perform powder electrostatic spraying on the metal structure products. This spraying method cannot perform all-round spraying on the metal structure products, affecting the spraying effect. Summary of the Invention

[0004] In order to facilitate all-round spraying of metal structure products, this application provides a uniform powder spraying device for metal surfaces.

[0005] A uniform powder spraying device for metal surfaces provided by this application adopts the following technical solutions.

[0006] The uniform powder spraying device for metal surfaces includes a mounting seat, a base, a protective cylinder, and a powder spraying assembly. The axis of the protective cylinder is vertical. The protective cylinder includes two half cylinders. The bottoms of the two half cylinders are slidably connected to the base, and the sliding directions of the two half cylinders are close to or away from each other. A powder suction groove is opened in the middle of the base. Sliding grooves are opened at both ends of the powder suction groove that are far away from each other. A bidirectional lead screw is rotatably connected in the sliding groove. The bottoms of the two half cylinders are connected with sliding blocks. The sliding blocks are slidably connected to the sliding groove. The two sliding blocks are threadedly connected to both ends of the bidirectional lead screw;

[0007] The powder spraying assembly is arranged on the two half cylinder assemblies;

[0008] The bottom of the base is rotatably connected to the mounting seat.

[0009] By adopting the above technical solution, during operation, the two semi-cylinders slide to separate, the workpiece on the production line moves between the two semi-cylinders, the two semi-cylinders merge, and the powder spraying assembly sprays powder on the workpiece at the center of the protective cylinder. On the one hand, the moving distance of the semi-cylinder is small, which reduces the stroke, and the moving speed of the semi-cylinder is relatively fast, resulting in high efficiency of the workpiece entering the cylinder and relatively high production efficiency of the workpiece. On the second hand, since the movement of the two semi-cylinders can be achieved only by the bidirectional lead screw and the adjusting motor, the equipment cost is reduced and it is convenient for maintenance. At the same time, during powder spraying, the residual powder is sucked into the powder suction groove, reducing the floating particles in the workshop and ensuring the comfort of the working environment of the employees.

[0010] Optionally, the sliding groove penetrates downward through the base, and the sliding grooves on both sides communicate with the powder suction groove in the direction of approaching each other.

[0011] By adopting the above technical solution, dust will not accumulate in the sliding groove, thus not affecting the sliding of the sliding block.

[0012] Optionally, inclined surfaces are provided at the tops of the two sides of the powder suction groove in the same direction as the movement direction of the workpiece, and the inclined surfaces on both sides of the powder suction groove are inclined downward in the direction of approaching each other.

[0013] By adopting the above technical solution, it is convenient for the powder to enter the powder suction groove.

[0014] Optionally, the powder spraying assembly includes a powder electrostatic spraying gun, a slide rail, a mounting block and a driving structure. The slide rail is arranged on the inner wall of the semi-cylinder, the mounting block is slidably connected to the slide rail, the powder electrostatic spraying gun is installed on the mounting block, and the driving structure drives the mounting block to slide vertically back and forth.

[0015] By adopting the above technical solution, the powder electrostatic spraying gun slides vertically back and forth, and at the same time, in cooperation with the rotation of the base, the outer surface of the workpiece is conveniently and evenly sprayed.

[0016] Optionally, the driving structure includes two transmission wheels, a transmission belt and a driving motor. The transmission wheels are rotatably connected to the inner wall of the semi-cylinder, the two transmission wheels are arranged vertically, the transmission belt is tensioned and connected to the two transmission wheels, the driving motor is fixed on the outside of the semi-cylinder, the driving motor drives one of the transmission wheels to rotate, and the mounting block is connected to the transmission belt.

[0017] By adopting the above technical solution, the transmission wheels and the transmission belt are arranged on the inner wall of the semi-cylinder, so there is no need to open a groove on the outer wall of the semi-cylinder for the mounting block to slide, thus preventing powder leakage.

[0018] Optionally, the mounting base includes a bottom plate, a top plate, and two side plates supporting the top plate. The base is located between the two side plates. The top plate is provided with ventilation holes, and the ventilation holes communicate with the top end of the protective cylinder. The bottom of the base is rotatably connected to the top of the bottom plate; a toothed edge is circumferentially provided on the base, and a transmission gear and a transmission motor are connected to the side plate. The transmission gear meshes with the toothed edge, the axis of the transmission gear is vertical, and the transmission motor drives the transmission gear to rotate.

[0019] By adopting the above technical solution, the transmission motor drives the transmission gear to rotate, thereby driving the base to rotate, facilitating the rotation of the base.

[0020] Optionally, a protective box is fixed to the side wall of the side plate, and the transmission gear and the transmission motor are arranged in the protective box.

[0021] By adopting the above technical solution, the protective box makes the transmission motor not easily affected by powder, improving its service life.

[0022] Optionally, a powder-proof box is arranged on the outer wall of the semi-cylinder, and the driving motor is arranged in the powder-proof box.

[0023] By adopting the above technical solution, the driving motor is protected, improving its service life.

[0024] Optionally, a perforation for the powder conveying pipe to pass through is arranged at the bottom of the side wall of the semi-cylinder, and the powder conveying pipe is a flexible pipe.

[0025] By adopting the above technical solution, when the mounting block slides to be close to the bottom of the semi-cylinder, the redundant part of the powder conveying pipe hangs below the workpiece, so it is not easy to affect the workpiece.

[0026] Optionally, a powder suction box is arranged at the bottom of the mounting base. The powder suction groove penetrates downward through the base and communicates with the powder suction box, and a powder recovery pipe is connected to the side wall of the powder suction box.

[0027] By adopting the above technical solution, one end of the powder recovery pipe away from the powder suction box is connected to a suction fan. After the powder suction box collects the powder, it is transmitted to the recovery place.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. The moving distance of the semi-cylinder is small, reducing the stroke, and the moving speed of the semi-cylinder is fast, and it will not affect the workpiece, so the workpiece feeding efficiency is high and the workpiece production efficiency is high;

[0030] 2. The movement of the two semi-cylinders can be realized through the bidirectional lead screw and the adjustment motor, reducing the equipment cost and facilitating maintenance;

[0031] 3. During powder spraying, the residual powder is sucked into the powder suction groove, reducing the floating particles in the workshop and ensuring the comfort of the working environment of the employees;

[0032] 4. The sliding groove penetrates through the base downward, and no dust will accumulate in the sliding groove, thus not affecting the sliding of the sliding block.

[0033] 5. The driving wheel and the driving belt are arranged on the inner wall of the semi-cylinder, so there is no need to open a groove on the outer wall of the semi-cylinder for the installation block to slide, thus preventing powder leakage. Description of the Drawings

[0034] Figure 1 is an overall schematic diagram of the uniform powder spraying equipment for metal surfaces in the embodiment.

[0035] Figure 2 is a partial schematic diagram of the embodiment, mainly showing the structure inside the semi-cylinder.

[0036] Description of the reference numerals: 1, mounting seat; 11, bottom plate; 12, top plate; 121, ventilation hole; 13, side plate; 131, driving gear; 132, driving motor; 133, protection box; 2, base; 21, toothed edge; 22, powder suction groove; 23, powder suction box; 24, powder recovery pipe; 25, sliding groove; 251, inclined surface; 3, protective cylinder; 31, semi-cylinder; 32, sliding block; 4, powder spraying assembly; 41, powder electrostatic spraying gun; 411, powder conveying pipe; 412, perforation; 42, slide rail; 43, mounting block; 44, driving structure; 441, driving wheel; 442, driving belt; 443, driving motor; 444, powder-proof box; 5, bidirectional lead screw; 6, adjusting motor. Detailed Embodiment

[0037] The following will further describe the present application in detail Figure 1-2 in conjunction with the attached drawings.

[0038] The embodiment of the present application discloses a uniform powder spraying equipment for metal surfaces. The uniform powder spraying equipment for metal surfaces includes a mounting seat 1, a base 2, a protective cylinder 3 and two groups of powder spraying assemblies 4.

[0039] The mounting seat 1 includes a bottom plate 11, a top plate 12 and two side plates 13 supporting the top plate 12. The base 2 is located between the two side plates 13, the bottom of the base 2 is rotatably connected to the top surface of the bottom plate 11, the protective cylinder 3 is arranged on the top surface of the base 2, the axis of the protective cylinder 3 is vertical, the protective cylinder 3 includes two semi-cylinders 31, the bottoms of the two semi-cylinders 31 are slidably connected to the base 2, and the sliding directions of the two semi-cylinders 31 are towards or away from each other. A ventilation hole 121 is opened on the top plate 12, and when the two semi-cylinders 31 are combined, the ventilation hole 121 communicates with the top end of the protective cylinder 3.

[0040] The base 2 is circumferentially provided with a toothed edge 21. A transmission gear 131 is rotatably connected to the side plate 13, and a transmission motor 132 is fixed to the side wall of the side plate 13. The transmission gear 131 meshes with the toothed edge 21. The axis of the transmission gear 131 is vertical, and the transmission motor 132 drives the transmission gear 131 to rotate. A protection box 133 is fixed to the side wall of the side plate 13. The transmission gear 131 and the transmission motor 132 are located inside the protection box 133, making the transmission gear 131 and the transmission motor 132 not easily collide and making the transmission stable.

[0041] A powder suction groove 22 is formed in the middle of the base 2. A powder suction box 23 is fixed to the bottom of the bottom plate 11. The powder suction groove 22 penetrates downward through the base 2 and communicates with the powder suction box 23. A powder recovery pipe 24 is connected to the side wall of the powder suction box 23.

[0042] Sliding grooves 25 are formed at the horizontally far - away ends of the powder suction groove 22 in the horizontal direction. The two sliding grooves 25 communicate with the powder suction groove 22 in the direction of approaching each other. A bidirectional lead screw 5 is rotatably connected in the sliding groove 25. One end of the bidirectional lead screw 5 penetrates to one side of the base 2 in the horizontal direction. An adjustment motor 6 for driving the bidirectional lead screw 5 to rotate is fixed to the base 2. The length direction of the bidirectional lead screw 5 is perpendicular to the moving direction of the workpiece. Two sliding blocks 32 are fixedly connected to the bottoms of the two half - cylinders 31. The sliding blocks 32 are slidably connected to the sliding grooves 25. The two sliding blocks 32 are threadedly connected to the two ends of the bidirectional lead screw 5. When the bidirectional lead screw 5 rotates, it drives the sliding blocks 32 to move away from or close to each other.

[0043] On the tops of the two sides of the powder suction groove 22 that are in the same direction as the moving direction of the workpiece, inclined surfaces 251 are provided. The inclined surfaces 251 on both sides of the powder suction groove 22 are inclined downward in the direction of approaching each other. When the two half - cylinders 31 are closed, the outer diameter of the inclined surface 251 fits the inner diameter of the two half - cylinders 31.

[0044] Two powder spraying assemblies 4 are provided on the two half - cylinder 31 assemblies in a one - to - one correspondence. Each powder spraying assembly 4 includes a powder electrostatic spraying gun 41, a slide rail 42, a mounting block 43, and a driving structure 44. The slide rail 42 is arranged on the inner wall of the half - cylinder 31. The length direction of the slide rail 42 is the vertical direction. The mounting block 43 is slidably connected to the slide rail 42. The powder electrostatic spraying gun 41 is installed on the mounting block 43, and the driving structure 44 drives the mounting block 43 to slide vertically back and forth.

[0045] A through - hole 412 for the powder - conveying pipe 411 to pass through is formed at the bottom of the side wall of the half - cylinder 31. The powder - conveying pipe 411 is a flexible pipe. One end of the powder - conveying pipe 411 is connected to the powder electrostatic spraying gun 41, and the other end is used to connect to the powder material. The powder - conveying pipe 411 is used to convey powder to the powder electrostatic spraying gun 41.

[0046] The driving structure 44 includes two transmission wheels 441, a transmission belt 442 and a driving motor 443. The transmission wheels 441 are rotatably connected to the inner wall of the semi-cylinder 31. The two transmission wheels 441 are arranged vertically and are close to the two length ends of the slide rail 42. The transmission belt 442 is tensioned and connected to the two transmission wheels 441. The driving motor 443 is fixed to the outside of the semi-cylinder 31, and the driving motor 443 drives the transmission wheel 441 at the bottom to rotate. The mounting block 43 is fixedly connected to the outside of the transmission belt 442.

[0047] A powder-proof box 444 is fixed to the outer wall of the semi-cylinder 31, and the driving motor 443 is located in the powder-proof box 444. A powder-proof box 444 is also fixed to the side wall of the base 2, and the adjusting motor 6 is located in this powder-proof box 444.

[0048] The implementation principle of the uniform powder spraying device for the metal surface in the embodiment of the present application is as follows: During production, the two semi-cylinders 31 slide to separate, and the workpieces on the production line move between the two semi-cylinders 31. After the adjusting motor 6 drives the bidirectional lead screw 5 to rotate, the two semi-cylinders 31 are combined. The powder spraying assembly 4 sprays powder on the workpiece at the center of the protective cylinder 3. At the same time, the driving motor 443 drives the transmission wheel 441 to rotate, so that the mounting block 43 slides vertically back and forth. At the same time, the transmission motor 132 drives the transmission gear 131 to rotate, so that the base 2 rotates back and forth, and the rotation angle is set to 180°, realizing 360-degree all-round and non-dead-angle powder spraying on the circumference of the workpiece, making the powder spraying uniform. During powder spraying, the suction fan makes the airflow take away the excess powder and enter through the powder suction groove 22 for recycling, so that the powder is not easily wasted.

[0049] In the solution of the present application, since the moving distance of the semi-cylinder 31 is small, the stroke is reduced, and the moving speed of the semi-cylinder 31 is relatively fast, so that the efficiency of the workpiece entering the cylinder is high and the production efficiency of the workpiece is relatively high. Secondly, since the movement of the two semi-cylinders 31 can be realized only by the bidirectional lead screw 5 and the adjusting motor 6, the equipment cost is reduced and the maintenance is convenient. At the same time, during powder spraying, the residual powder is sucked into the powder suction groove 22, reducing the floating particles in the workshop and ensuring the comfort of the working environment of the employees.

[0050] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A uniform powder spraying device for metal surfaces, comprising a mounting base (1), a base (2), a protective cylinder (3) and a powder spraying assembly (4), characterized in that: The axis of the protective cylinder (3) is vertical. The protective cylinder (3) includes two semi-cylinders (31). The bottoms of the two semi-cylinders (31) are slidably connected to the base (2). The sliding directions of the two semi-cylinders (31) are towards each other or away from each other. A powder suction groove (22) is formed in the middle of the base (2). Sliding grooves (25) are formed at both ends of the powder suction groove (22) away from each other. A bidirectional lead screw (5) is rotatably connected in the sliding groove (25). The bottoms of the two semi-cylinders (31) are connected with sliding blocks (32). The sliding blocks (32) are slidably connected to the sliding grooves (25). The two sliding blocks (32) are threadedly connected to both ends of the bidirectional lead screw (5). An adjustment motor (6) for driving the bidirectional lead screw (5) to rotate is arranged on the base (2). The powder spraying assembly (4) is arranged on the two semi-cylinder (31) assemblies. The bottom of the base (2) is rotatably connected to the mounting seat (1).

2. The uniform powder spraying device for metal surfaces according to claim 1, wherein: The sliding groove (25) penetrates through the base (2) downward. The sliding grooves (25) on both sides communicate with the powder suction groove (22) in the direction of approaching each other.

3. The uniform powder spraying device for a metal surface according to claim 1, characterized in that: On the tops of both sides of the powder suction groove (22) in the same direction as the moving direction of the workpiece, inclined surfaces (251) are provided. The inclined surfaces (251) on both sides of the powder suction groove (22) incline downward in the direction of approaching each other.

4. The uniform powder spraying device for a metal surface according to claim 1, characterized in that: The powder spraying assembly (4) includes a powder electrostatic spraying gun (41), a slide rail (42), a mounting block (43) and a driving structure (44). The slide rail (42) is arranged on the inner wall of the semi-cylinder (31). The mounting block (43) is slidably connected to the slide rail (42). The powder electrostatic spraying gun (41) is mounted on the mounting block (43). The driving structure (44) drives the mounting block (43) to slide vertically back and forth.

5. The uniform powder spraying device for metal surfaces according to claim 4, characterized in that: The driving structure (44) includes two transmission wheels (441), a transmission belt (442) and a driving motor (443). The transmission wheels (441) are rotatably connected to the inner wall of the semi-cylinder (31). The two transmission wheels (441) are arranged vertically. The transmission belt (442) is tensioned and connected to the two transmission wheels (441). The driving motor (443) is fixed to the outside of the semi-cylinder (31). The driving motor (443) drives one of the transmission wheels (441) to rotate. The mounting block (43) is connected to the transmission belt (442).

6. The uniform powder spraying device for metal surfaces according to claim 1, characterized in that: The mounting seat (1) includes a bottom plate (11), a top plate (12) and two side plates (13) supporting the top plate (12). The base (2) is located between the two side plates (13). Ventilation holes (121) are formed in the top plate (12). The ventilation holes (121) communicate with the top end of the protective cylinder (3). The bottom of the base (2) is rotatably connected to the top of the bottom plate (11). A toothed edge (21) is arranged circumferentially on the base (2). A transmission gear (131) and a transmission motor (132) are connected to the side plate (13). The transmission gear (131) meshes with the toothed edge (21). The axis of the transmission gear (131) is vertical. The transmission motor (132) drives the transmission gear (131) to rotate.

7. The uniform powder spraying device for metal surfaces according to claim 5, characterized in that: A protection box (133) is fixedly arranged on the side wall of the side plate (13), and the transmission gear (131) and the transmission motor (132) are arranged in the protection box (133).

8. The uniform powder spraying device for metal surfaces according to claim 1, characterized in that: A powder-proof box (444) is arranged on the outer wall of the semi-cylinder (31), and the driving motor (443) is arranged in the powder-proof box (444).

9. The uniform powder spraying device for metal surfaces according to claim 4, characterized in that: A through hole (412) for the powder passing pipe (411) to pass through is arranged at the bottom of the side wall of the semi-cylinder (31), and the powder passing pipe (411) is a flexible pipe.

10. The uniform powder spraying device for a metal surface according to claim 1, characterized in that: A powder suction box (23) is arranged at the bottom of the mounting seat (1), the powder suction groove (22) penetrates downward through the base (2) and communicates with the powder suction box (23), and a powder recovery pipe (24) is connected to the side wall of the powder suction box (23).

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