On-line liquid nitrogen soaking post-processing device for powder spraying line

Abstract

The utility model relates to the technical field of powder spraying lines, and discloses a powder spraying line online liquid nitrogen soaking post-processing device which is characterized in that a suspension chain is fixedly connected to the top end of a bottom plate, a fixing frame is arranged on one side of the top end of the bottom plate, a rack is arranged in the fixing frame, an electric guide rail is fixedly connected to the inner bottom wall of the rack, and a sliding block is slidably connected to the outer side of the electric guide rail; air cylinders are fixedly connected to the two sides of the fixing frame, cross rods are fixedly connected to the driving ends of the air cylinders, gears are rotationally connected to the two ends of each cross rod, and chains are connected to the outer sides of the gears in an engaged mode. According to the utility model, the air cylinder is started to push the rack to ascend, so that the hanging tool can enter the liquid nitrogen tank to soak the hanging tool, the air pump is started to enable particles in the hopper to be sprayed out from the other end of the pipeline to strike the hanging tool in a saturated manner, the particles in the hopper are made of a steel material, and the steel particles are relatively strong in impact; and the treatment time of the powder layer on the surface of the hanger is short.

Description

Technical Field

[0001] This utility model relates to the field of powder coating line technology, and in particular to an online liquid nitrogen immersion post-treatment device for powder coating lines. Background Technology

[0002] A powder coating line, also known as a powder spraying equipment or powder spraying equipment, is a complete line of machines and equipment used for surface treatment of commercial metals. It mainly consists of a powder booth, an oven, a suspension chain, and hangers. The working principle of a powder coating line is to evenly spray powder coating onto the surface of the workpiece to be coated through the powder booth, and then bake and cure it through the oven.

[0003] When workpieces are sprayed in a powder booth, the hangers carrying the workpieces are sprayed with powder. Over time, the powder on the surface of the hangers will gradually thicken, forming an insulating layer. This prevents the workpieces from properly attracting powder via electrostatic discharge, resulting in defective workpieces and electric arcs, which affect safe production.

[0004] This requires using ejected particles to impact the hanger and clean the powder layer on its surface. However, traditional particles are made of lead or copper, which are relatively soft, and the cleaning process takes a long time. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an online liquid nitrogen immersion post-treatment device for powder spraying lines, which aims to improve the existing technology where workpiece-carrying hangers are sprayed with powder, and the traditional particles are lead or copper, which are relatively soft and take a long time to clean the hanger surface.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: an online liquid nitrogen immersion post-treatment device for powder spraying lines, including a base plate.

[0007] A suspension chain is fixedly connected to the top of the base plate;

[0008] A fixing frame is provided on one side of the top of the base plate, and a frame is slidably connected inside the fixing frame;

[0009] An electric guide rail is fixedly connected to the bottom wall of the inner frame, and a slider is slidably connected to the outside of the electric guide rail;

[0010] A liquid nitrogen tank is fixedly connected to the top of the slider and is used to soak the hanger;

[0011] Two cylinders are fixedly connected to both sides of the fixed frame, and crossbars are fixedly connected to the driving ends of the two cylinders. Gears are rotatably connected to both ends of the two crossbars.

[0012] Multiple chains are threadedly connected to the four corners of the top of the frame, and one end of each chain is threadedly connected to the front and rear sides and left and right ends of the fixed frame. The middle of each chain is meshed with the outside of multiple gears for adjusting the height of the liquid nitrogen tank.

[0013] The particle impact chamber, installed on the front side of the top of the base plate, is used to clean the hanging fixtures.

[0014] As a further description of the above technical solution:

[0015] The particle impact chamber includes a chamber fixedly connected to the front side of the top of the base plate. An operating platform is fixedly connected to the top of the chamber, and a particle emitter is fixedly connected to the top of the operating platform. The particle emitter includes a hopper, which is fixedly connected to the top of the operating platform. Each hopper has a discharge hole at its bottom and stores particles inside.

[0016] As a further description of the above technical solution:

[0017] The rear side of the cabin is fixedly connected to an outer shell, which has openings on both sides and a notch in the inner top wall of the outer shell to allow the hanger to enter the liquid nitrogen tank.

[0018] As a further description of the above technical solution:

[0019] A valve is fixedly connected to the bottom of the discharge port, and a pipe is fixedly connected to the bottom of the valve. One end of the pipe passes through the side wall of the engine compartment and the side wall of the outer shell in sequence.

[0020] As a further description of the above technical solution:

[0021] An air pump is fixedly connected to the inner wall of the cabin, and the output end of the air pump is connected to the middle of the pipeline.

[0022] As a further description of the above technical solution:

[0023] Both ends of the two crossbars are connected to sliding rods, and one end of each sliding rod is fixedly connected to the left and right ends of the fixed frame to limit the movement direction of the crossbars.

[0024] As a further description of the above technical solution:

[0025] The particles are made of steel with a diameter of 3mm-8mm, so that the surface powder layer can cause the embrittled paint surface to vibrate and fall off.

[0026] This utility model has the following beneficial effects:

[0027] In this invention, the starting cylinder pushes the crossbar upward, raising the frame and allowing the hanger to enter the liquid nitrogen tank. The starting electric guide rail causes the slider to move the liquid nitrogen tank along with the hanger, soaking the powder layer on the hanger surface. The starting air pump generates suction in the pipe, causing the particles inside the hopper to be sprayed out from one end of the pipe, saturating and impacting the hanger to remove the powder layer. The particles in the hopper are made of 3mm-8mm steel material, which has a strong impact and can cause the brittle paint to vibrate and peel off when it hits the hanger surface, resulting in a short processing time. Attached Figure Description

[0028] Figure 1 This is a perspective view of the online liquid nitrogen immersion post-treatment device for the powder spraying line proposed in this utility model;

[0029] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0030] Figure 3 This is a cross-sectional view of the cabin of the online liquid nitrogen immersion post-treatment device for powder spraying line proposed in this utility model;

[0031] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0032] Figure 5 This is a perspective view of the fixing frame of the online liquid nitrogen immersion post-treatment device for the powder spraying line proposed in this utility model;

[0033] Figure 6 This is a schematic diagram of the frame structure of the online liquid nitrogen immersion post-treatment device for the powder spraying line proposed in this utility model.

[0034] Legend:

[0035] 1. Base plate; 2. Suspension chain; 3. Cabin; 4. Control panel; 5. Outer shell; 6. Fixture; 7. Hopper; 8. Valve; 9. Pipeline; 10. Air pump; 11. Cylinder; 12. Slide bar; 13. Electric guide rail; 14. Chain; 15. Crossbar; 16. Gear; 17. Frame; 18. Liquid nitrogen tank; 19. Sliding block. Detailed Implementation

[0036] 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.

[0037] Reference Figure 1-6This utility model provides an embodiment of an online liquid nitrogen immersion post-treatment device for powder spraying lines, comprising a base plate 1, a suspension chain 2 fixedly connected to the top of the base plate 1, a fixing frame 6 provided on one side of the top of the base plate 1, a frame 17 disposed inside the fixing frame 6, an electric guide rail 13 fixedly connected to the bottom wall of the inner wall of the frame 17, a slider 19 slidably connected to the outer side of the electric guide rail 13, a liquid nitrogen tank 18 fixedly connected to the top of the slider 19, the liquid nitrogen tank 18 storing liquid nitrogen, and cylinders 11 fixedly connected to both sides of the fixing frame 6, the driving end of the cylinders 11 being fixed. A crossbar 15 is connected, with slide bars 12 passing through both ends of the crossbar 15. Multiple slide bars 12 are fixedly connected to the front, rear, left, and right ends of the fixed frame 6, respectively, restricting the crossbar 15 to only move up and down. Both crossbars 15 are rotatably connected to gears 16, with chains 14 meshing with the outer sides of the gears 16. One end of the chain 14 is threaded to the four corners of the top of the frame 17, and the other end is threaded to the front, rear, left, and right ends of the fixed frame 6. A housing 5 is provided on the outside of the fixed frame 6, and is fixedly connected to the rear side of the cabin 3. The housing 5 is located outside the fixed frame 6, with openings on both sides and a notch in the inner top wall. When the suspension chain 2 pulls the hanger forward, the hanger can enter the housing 5 through the openings. When the hanger enters the housing 5, the connection between the suspension chain 2 and the hanger can move within the notch on the housing 5.

[0038] When it is necessary to clean the powder layer on the hanger, when the suspension chain 2 pushes the hanger to the top of the liquid nitrogen tank 18, the cylinder 11 can be activated to push the crossbar 15 upward. When the crossbar 15 moves upward, it will push the gear 16 upward, thereby lifting the chain 14 upward. At the same time, the gear 16 will rotate under the action of the chain 14, so that the chain 14 can pull the frame 17 upward, allowing the hanger to enter the liquid nitrogen tank 18. Simultaneously, the electric guide rail 13 will push the slider 19 to move forward with the hanger, thus immersing the hanger and making the powder layer on the surface of the hanger brittle.

[0039] After the hanger has been soaked, cylinder 11 can be restarted to make crossbar 15 drive gear 16 to move downward. When gear 16 moves downward, frame 17 will move downward due to its own weight, and at the same time, liquid nitrogen tank 18 will also descend. Simultaneously, the electric guide rail 13 pushes slider 19 to move liquid nitrogen tank 18, so that liquid nitrogen tank 18 can be reset and wait for the next hanger.

[0040] A particle impact chamber is fixedly connected to one side of the top of the base plate 1. The particle impact chamber includes a chamber 3, which is fixedly connected to the front side of the top of the base plate 1. An operating table 4 is fixedly connected to the top of the chamber 3, and a particle emitter is fixedly connected to the top of the chamber. The particle emitter includes a hopper 7, which is fixedly connected to the top of the operating table 4. The hopper 7 stores particles, which are 3MM-8MM steel materials. The steel particles have a strong impact and can cause the brittle paint to vibrate and fall off when they hit the surface of the hanger. The processing time is short.

[0041] The bottom of the hopper 7 has multiple evenly distributed discharge holes. A valve 8 is fixedly connected to the bottom of the discharge hole. The bottom of the valve 8 is connected to a pipe 9. One end of the pipe 9 passes through the side wall of the machine compartment 3 and extends into the interior of the machine compartment 3. Multiple air pumps 10 are fixedly connected to one side of the machine compartment 3. The output ends of the multiple air pumps 10 are connected to the middle of the pipe 9.

[0042] The air pump 10 has enough power to accelerate the particles inside the pipe 9 to a speed sufficient to remove dust from the surface of the hanger.

[0043] After the hanger enters the machine compartment 3, particles can be poured into the hopper 7. Then, the air pump 10 is started to generate suction in the pipe 9, and the valve 8 is opened to allow the particles in the hopper 7 to enter the pipe 9 and flow with the airflow inside the pipe 9. Then, they are sprayed out from the other end of the pipe 9 and impact the surface of the hanger. The impact of the particles on the hanger cleans the powder layer on the hanger.

[0044] In this embodiment, the suspension chain 2 can also be replaced with a suspension accumulation chain and a friction line. The replacement will not affect the operation of other structures.

[0045] Working principle: The starting cylinder 11 pushes the crossbar 15 upward, causing the frame 17 to rise, allowing the hanger to enter the liquid nitrogen tank 18. When the suspension chain 2 moves, the electric guide rail 13 is activated, causing the slider 19 to push the liquid nitrogen tank 18 to move together with the hanger on the suspension chain 2. This allows the liquid nitrogen inside the tank 18 to soak the powder layer on the hanger surface, making the powder layer brittle. After the hanger is soaked, the cylinder 11 is activated again to move the crossbar 15 downward, and the frame 17 moves the liquid nitrogen tank 18 downward together. The air pump 10 is activated, causing the pipe 9 to generate suction and opening the valve 8, allowing the particles inside the hopper 7 to enter the pipe 9 and flow with the airflow inside the pipe 9. The particles are then sprayed out from the other end of the pipe 9 and impact the hanger surface, using the impact of the particles to clean the powder layer off the hanger.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An online liquid nitrogen immersion post-treatment device for powder coating lines, characterized in that: Including the base plate (1). The top of the base plate (1) is fixedly connected to a suspension chain (2); A fixing frame (6) is provided on one side of the top of the base plate (1), and a frame (17) is slidably connected inside the fixing frame (6). An electric guide rail (13) is fixedly connected to the inner bottom wall of the frame (17), and a slider (19) is slidably connected to the outside of the electric guide rail (13). A liquid nitrogen tank (18) is fixedly connected to the top of the slider (19) for soaking the hanger; Two cylinders (11) are fixedly connected to both sides of the fixed frame (6), and a crossbar (15) is fixedly connected to the driving end of each cylinder (11). Gears (16) are rotatably connected to both ends of the crossbars (15). Multiple chains (14) are threaded to the four corners of the top of the frame (17), and one end of each chain (14) is threaded to the front and rear sides of the fixed frame (6). The middle of each chain (14) is meshed with the outside of multiple gears (16) for adjusting the height of the liquid nitrogen tank (18). The particle impact chamber is installed on the front side of the top of the base plate (1) and is used to clean the hangers.

2. The online liquid nitrogen immersion post-treatment device for powder spraying line according to claim 1, characterized in that: The particle impact chamber includes a cabin (3), which is fixedly connected to the front side of the top of the base plate (1). An operating table (4) is fixedly connected to the top of the cabin (3). A particle emitter is fixedly connected to the top of the operating table (4). The particle emitter includes a hopper (7), which is fixedly connected to the top of the operating table (4). Each hopper (7) has a discharge hole at its bottom end, and particles are stored inside the hopper (7).

3. The online liquid nitrogen immersion post-treatment device for powder spraying line according to claim 2, characterized in that: The cabin (3) is fixedly connected to the rear side of the outer shell (5). The outer shell (5) is located outside the fixed frame (6). Openings are provided on both sides of the outer shell (5). A notch is provided on the inner top wall of the outer shell (5) to allow the hanger to enter the liquid nitrogen tank (18).

4. The online liquid nitrogen immersion post-treatment device for powder spraying line according to claim 2, characterized in that: A valve (8) is fixedly connected to the bottom of the discharge hole, and a pipe (9) is fixedly connected to the bottom of the valve (8). One end of the pipe (9) passes through the side wall of the cabin (3) and the side wall of the outer shell (5) in sequence.

5. The online liquid nitrogen immersion post-treatment device for powder spraying line according to claim 4, characterized in that: An air pump (10) is fixedly connected to the inner wall of the cabin (3), and the output end of the air pump (10) is connected to the middle of the pipe (9).

6. The online liquid nitrogen immersion post-treatment device for powder spraying line according to claim 4, characterized in that: Both ends of the two crossbars (15) are connected to sliding rods (12), and one end of each sliding rod (12) is fixedly connected to the left and right ends of the fixed frame (6) to limit the movement direction of the crossbars (15).

7. The online liquid nitrogen immersion post-treatment device for powder spraying line according to claim 2, characterized in that: The particles are made of steel with a diameter of 3mm-8mm, so that the surface powder layer can cause the embrittled paint surface to vibrate and fall off.

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