Automobile part rust-proof spraying device with constant temperature drying cabin

Abstract

The utility model discloses an automobile part antirust spraying device with constant temperature drying cabin belongs to automobile parts processing equipment technical field. The device includes the cabin body, is equipped with annular antirust spray pipe and the clamping block subassembly driven by the air cylinder in the cabin body. The bottom of cabin body inner wall is equipped with wastewater tank, and wastewater tank links water circulation filtering system, and this system passes through first water pump and extracts the waste liquid in wastewater tank to the water tank with filter screen and carries out purification, and the water after purification is transported to the conical spray pipe in the inside of cabin body by second water pump and sprays out by conical nozzle. The support frame on the outer wall of cabin body is fixedly connected with motor and centrifugal circulating fan, and the air inlet and air outlet of fan are communicated with cabin body through the exhaust pipe and air inlet pipe, and heating pipe and temperature sensor are also equipped in the cabin body, and constitute closed loop hot air circulation system. The utility model discloses through hot air circulation structure, has guaranteed the even constant temperature in the cabin, has improved the antirust coating solidification quality, has improved the environmental protection and practicality of device.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive parts processing equipment, and in particular to an anti-rust spraying device for automotive parts with a constant temperature drying chamber. Background Technology

[0002] After automotive parts are manufactured, they typically require rust-preventive paint coating to prevent oxidation and corrosion during storage or transportation. Current rust-preventive coating operations are usually carried out in dedicated spray booths or drying ovens, which are generally equipped with spray guns and heating elements to achieve spraying and subsequent drying and curing.

[0003] However, in practical applications, it has been found that existing spray drying equipment has significant structural defects. Most equipment simply installs heating pipes on the inner wall of the chamber for static heating, lacking an effective airflow organization structure. This design prevents effective circulation of hot air inside the chamber, resulting in extremely uneven temperature distribution within the drying space. Areas near the heat source are too hot, easily causing the paint to dry too quickly, leading to bubbles or cracks; while areas farther from the heat source are too cold, resulting in slow paint curing. This uneven drying temperature affects the adhesion and overall quality of the anti-rust coating on automotive parts. Furthermore, existing equipment often lacks integrated part-holding mechanisms and a corresponding wastewater recycling system, causing parts to easily shift during processing, and the generated wastewater is difficult to recycle, resulting in resource waste.

[0004] Therefore, this utility model proposes an anti-rust spraying device for automotive parts with a constant temperature drying chamber to overcome the shortcomings of the prior art. Utility Model Content

[0005] In view of the problems in the existing automotive parts anti-rust spraying and drying equipment, such as uneven temperature distribution and poor drying quality due to the lack of airflow circulation structure, as well as resource waste and low processing stability due to the lack of integrated waste liquid recycling and stable clamping mechanism, this utility model aims to provide an automotive parts anti-rust spraying device with a constant temperature drying chamber that has an improved structure and can effectively solve the above problems.

[0006] This utility model provides an anti-rust spraying device for automotive parts with a constant temperature drying chamber, including: a chamber body, and a spraying structure fixed to the top wall inside the chamber body, the output end of the spraying structure being connected to an annular anti-rust spray pipe, and a plurality of anti-rust nozzles being connected to the annular anti-rust spray pipe; as well as a wastewater tank, a clamping base, a cylinder, a clamping block, a support frame, a motor, a centrifugal circulating fan, a heating pipe, a temperature sensor, and a water circulation filter assembly.

[0007] The wastewater tank is fixedly installed at the bottom of the inner wall of the cabin, a clamping base is fixedly installed at the top of the wastewater tank, a cylinder is fixedly installed at the bottom of the clamping base, and a clamping block is fixedly connected to the output end of the cylinder; a support frame is fixedly installed on the outer wall of the cabin, a motor is fixedly installed on the support frame, and a centrifugal circulating fan is connected to the output shaft of the motor.

[0008] Furthermore, the centrifugal circulating fan, the exhaust pipe, the inlet pipe, and the cabin are combined via an airflow circulation loop. Specifically, the air inlet of the centrifugal circulating fan is connected to the interior of the cabin through the exhaust pipe, and the air outlet is connected to the interior of the cabin through the inlet pipe. A heating element and a temperature sensor are fixedly installed on the inner wall of the cabin. In addition, the wastewater tank is connected to a first water pump, the first water pump is connected to the water tank, a filter screen is installed in the water tank, the water tank is connected to a second water pump, and the second water pump is connected to a conical spray pipe extending into the interior of the cabin, with a conical nozzle fixedly installed on the conical spray pipe.

[0009] Preferably, the surface of the wastewater tank is provided with several wastewater holes, and the bottom of the wastewater tank is connected to the input end of the first water pump through a wastewater pumping pipe for collecting and pouring out waste liquid.

[0010] Preferably, the output end of the first water pump is connected to the water tank through a wastewater outlet pipe, and the filter screen is fixedly installed inside the water tank and divides the water tank into two parts for physical filtration of the recycled wastewater.

[0011] Preferably, a purified water pumping pipe is provided inside the water tank on the side of the filter screen away from the wastewater outlet pipe. One end of the purified water pumping pipe is located inside the water tank, and the other end is connected to the input end of the second water pump for pumping purified water.

[0012] Preferably, the output end of the second water pump is fixedly connected to the conical spray pipe through a clean water outlet pipe, and the spray nozzle of the conical nozzle faces the clamping base to spray purified water onto the surface of the parts for cleaning.

[0013] Preferably, the annular anti-rust spray pipe is located above the clamping base, and the anti-rust nozzles are evenly distributed on the side of the annular anti-rust spray pipe facing the clamping base, so as to achieve multi-angle spraying coverage.

[0014] Preferably, the connection between the exhaust pipe and the cabin body is located on the upper part of the cabin body side wall, the connection between the air inlet pipe and the cabin body is located on the lower part of the cabin body side wall, and the heating pipe is fixedly installed on the inner wall of the cabin body by a fixing bracket. This layout is used to form a bottom-up hot airflow circulation in the cabin body.

[0015] Preferably, there are two clamping blocks, which are arranged opposite to each other on the clamping base. The cylinder drives the two clamping blocks to move towards or away from each other to securely clamp automotive parts of different sizes.

[0016] Preferably, the conical spray pipe is fixedly connected to the inner wall of the cabin, and the conical nozzle is located below the annular anti-rust spray pipe, for cleaning operations without interfering with the spraying operation.

[0017] This utility model has the following beneficial effects: 1. In this utility model, by setting up a closed-loop constant temperature hot air circulation system consisting of a motor, a centrifugal circulating fan, a heating tube and a temperature sensor, the problem of large temperature fluctuations and uneven airflow distribution inside the drying equipment in the prior art, which leads to easy corrosion of the surface of the parts or poor coating curing quality, is solved. The technical effect of uniform and constant temperature inside the chamber, high drying efficiency and effective guarantee of the quality of anti-rust coating is achieved.

[0018] 2. In this utility model, by constructing a water circulation filtration system including a wastewater tank, a multi-stage water pump, a water tank with a filter screen, and a conical spray nozzle, the problem of environmental impact and water waste caused by wastewater discharge from spraying and cleaning operations in the prior art is solved. It achieves the technical effect of effectively collecting and filtering waste liquid, realizing water resource recycling, and significantly reducing production water costs. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of an anti-rust spraying device for automotive parts with a constant temperature drying chamber proposed in this utility model. Figure 2 This is a schematic diagram of the centrifugal circulating fan of an anti-rust spraying device for automotive parts with a constant temperature drying chamber proposed in this utility model. Figure 3 This is a schematic diagram of the conical spray nozzle of an anti-rust spraying device for automotive parts with a constant temperature drying chamber proposed in this utility model. Figure 4 A schematic diagram of the clamping block of an anti-rust spraying device for automotive parts with a constant temperature drying chamber proposed in this utility model; Legend: 1. Cabin; 2. Heating pipe; 3. Wastewater inlet; 4. Wastewater tank; 5. First water pump; 6. Wastewater pumping pipe; 7. Clamping base; 8. Wastewater outlet pipe; 9. Water tank; 10. Filter screen; 11. Clean water pumping pipe; 12. Second water pump; 13. Clean water outlet pipe; 14. Temperature sensor; 15. Rust-proof nozzle; 16. Spraying structure; 17. Annular rust-proof spray pipe; 18. Support frame; 19. Motor; 20. Centrifugal circulating fan; 21. Air inlet pipe; 22. Exhaust pipe; 23. Conical spray pipe; 24. Conical nozzle; 25. Cylinder; 26. Clamping block. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0021] Example: Please refer to Figures 1 to 4 This utility model provides an anti-rust spraying device for automotive parts with a constant temperature drying chamber. It aims to solve the structural defects of existing anti-rust spraying equipment for automotive parts, such as single function, difficulty in achieving stable clamping of parts, efficient recycling of waste liquid, and precise constant temperature drying in the same workstation, resulting in low production efficiency and unstable coating quality.

[0022] like Figure 1 and Figure 2As shown, the automotive parts anti-rust spraying device with a constant temperature drying chamber includes a chamber 1 serving as the main support frame and enclosed working environment, and a spraying structure 16 bolted to the top wall inside the chamber 1. The spraying structure 16 serves as the supply terminal for the anti-rust paint, and its output end is fixedly connected to an annular anti-rust spray pipe 17. The annular anti-rust spray pipe 17 is horizontally suspended above the chamber 1, and its lower surface is evenly connected to several anti-rust nozzles 15. The nozzles 15 face downwards towards the center of the chamber 1, used for multi-angle coverage spraying of the workpiece placed below. Meanwhile, a wastewater tank 4 is fixedly connected to the bottom of the interior of the cabin 1. The wastewater tank 4 not only collects spraying waste liquid, but also serves as the mounting base for the mechanical structure below. A clamping base 7 is fixedly connected to the top of the wastewater tank 4. To achieve automated and stable clamping of automotive parts, a cylinder 25 is fixedly connected to the bottom of the clamping base 7. Two symmetrically arranged clamping blocks 26 are fixedly connected to the end of the output shaft of the cylinder 25. The surfaces of the clamping blocks 26 facing each other are provided with anti-slip textures. Driven by the cylinder 25, the two clamping blocks 26 can move along the surface of the clamping base 7. To clamp or loosen parts, the parts are moved in opposite directions. To provide a uniform curing environment after spraying, a support frame 18 is fixedly connected to one side of the outer wall of the chamber 1. A motor 19 is fixedly connected to the support frame 18. A centrifugal circulating fan 20 is coaxially connected to the output shaft of the motor 19. The air inlet of the centrifugal circulating fan 20 is connected to the interior of the chamber 1 through an exhaust pipe 22. The connection between the exhaust pipe 22 and the chamber 1 is located on the upper part of the side wall of the chamber 1. The air outlet of the centrifugal circulating fan 20 is connected to the interior of the chamber 1 through an air inlet pipe 21. The connection between 1 and the cabin 1 is located at the lower part of the side wall of the cabin 1, thereby forming an airflow circulation loop from bottom to top inside the cabin 1. In conjunction with this circulation loop, a heating pipe 2 and a temperature sensor 14 are also fixedly connected to the inner wall of the cabin 1 via a mounting seat. In addition, the device also includes a water circulation filtration system integrated inside and outside the cabin 1, which mainly consists of a first water pump 5, a water tank 9, a second water pump 12, and a conical spray pipe 23 that extends into the interior of the cabin 1 and is fixedly connected to a conical nozzle 24, thereby forming a comprehensive device that integrates clamping, spraying, drying, and waste liquid treatment.

[0023] To address the technical problems of water waste and lack of pre-cleaning function for parts surfaces in existing spraying operations, this embodiment further constructs a complete water circulation filtration system. This system forms a specific fluid circulation path with the chamber 1 and the clamping base 7. Specifically, the wastewater tank 4, as the core component for waste liquid collection, has several through wastewater holes 3 on its top surface. These wastewater holes 3 connect the internal space of the chamber 1 with the inner cavity of the wastewater tank 4, allowing the cleaning wastewater or excess paint generated in the chamber 1 to flow into the wastewater tank 4 under gravity through the wastewater holes 3. To discharge the collected waste liquid, the bottom sidewall of the wastewater tank 4... A wastewater pumping pipe 6 is connected to the wastewater tank 4. The end of the wastewater pumping pipe 6 away from the wastewater tank 4 is fixedly connected to the input end of the first pumping pump 5. The first pumping pump 5 serves as the primary power source for conveying power. Its output end is connected to a wastewater outlet pipe 8. The end of the wastewater outlet pipe 8 away from the first pumping pump 5 extends into the interior of the external water tank 9. The water tank 9 serves as a liquid purification container. A filter screen 10 is fixedly installed inside the tank. The filter screen 10 physically divides the interior of the water tank 9 into an inlet side and an outlet side. The outlet of the wastewater outlet pipe 8 is located on the inlet side. The waste liquid must pass through the filter screen 10 to reach the outlet side, thereby intercepting particulate impurities in the waste liquid.

[0024] Meanwhile, to achieve water recycling, a purified water pumping pipe 11 is installed inside the water tank 9 on the outlet side of the filter screen 10. One end of the purified water pumping pipe 11 extends to the bottom of the water tank 9 to draw filtered purified water, and the other end is connected to the input end of the second water pump 12. The second water pump 12 serves as the power source for recycling, and its output end is connected to a purified water outlet pipe 13. The end of the purified water outlet pipe 13 away from the second water pump 12 passes through the wall of the compartment 1 and extends into the interior of the compartment 1. The end is fixedly connected to the conical nozzle 23, which is fixedly connected to the side wall inside the cabin 1 by a mounting bracket. A conical nozzle 24 is fixedly installed on the conical nozzle 23. The conical nozzle 24 is located below the annular anti-rust nozzle 17 and its spray port is directly facing the area where the clamping base 7 is located. This closed-loop connection structure consisting of a pump, pipeline, water tank and nozzle ensures that the cleaning fluid can be repeatedly filtered and circulated, which significantly reduces water consumption while effectively cleaning the surface of the parts.

[0025] Based on the above embodiments, the present invention also includes the following preferred technical solutions: As a preferred embodiment, in order to further optimize the coverage of the anti-rust paint and reduce paint waste, the annular anti-rust spray pipe 17 is horizontally positioned directly above the clamping base 7, and its geometric center is located on the same vertical axis as the center of the clamping base 7. The inner diameter of the annular anti-rust spray pipe 17 is designed to be larger than the width of the clamping base 7, so that the spray pipe can cover the workpiece from the outside. At the same time, the several anti-rust nozzles 15 connected to the lower surface of the annular anti-rust spray pipe 17 are not vertically downward, but are tilted at a predetermined angle toward the center of the clamping base 7, thereby forming a converging cone-shaped atomization field during spraying, ensuring that the anti-rust paint can adhere to the surface and gaps of the automotive parts in all directions without dead angles.

[0026] To create an airflow pattern that is more conducive to rapid drying, the connection between the exhaust duct 22 and the side wall of the chamber 1 is specifically located in the upper part of the side wall of the chamber 1, while the connection between the air inlet duct 21 and the side wall of the chamber 1 is specifically located in the lower part of the side wall of the chamber 1. This height difference between the air inlet and outlet, combined with the thermal effect of the heating pipe 2, allows hot air to enter from the bottom, rise naturally, pass through the surface of the parts, and finally be extracted from the top, forming a uniform vertical laminar hot air field from bottom to top inside the chamber 1. This effectively avoids drying dead zones caused by local eddies and ensures the consistency of paint curing.

[0027] To improve the clamping stability of parts during cleaning and spraying processes and prevent displacement due to high-pressure water flow or airflow impact, high-friction coefficient anti-slip rubber pads are fixedly pasted on the surfaces of the two clamping blocks 26 facing each other, or cross anti-slip knurling patterns are directly machined on the metal surface of the clamping blocks 26. This not only increases the static friction between the clamping blocks 26 and the contact surface of the automotive parts, but also buffers the hard extrusion of clamping force on the surface of the parts to a certain extent, avoiding damage to the surface of the parts.

[0028] Furthermore, regarding the installation layout of the cleaning components, the conical nozzle 23 is securely fixed to the side wall inside the chamber 1 via an L-shaped mounting bracket, and the installation angle of the conical nozzle 24 at its end is calibrated so that its spray nozzle is angled downwards and aligned with the center area of ​​the clamping base 7. This ensures that the fan-shaped or conical water curtain sprayed by the conical nozzle 24 can completely cover the parts placed on the clamping base 7, thereby efficiently rinsing away dust and oil stains on the surface of the parts before the start of the coating process, providing a clean base for subsequent coating adhesion.

[0029] Working principle: When rust prevention processing is required for automotive parts, the operator first places the parts to be processed on the clamping base 7 inside the compartment 1, and then starts the cylinder 25. The output shaft of the cylinder 25 extends and retracts, driving the two clamping blocks 26 to move towards each other along the surface of the clamping base 7 until the anti-slip surface on the inner side of the clamping block 26 is tightly pressed against both sides of the parts, firmly clamping the parts and preventing them from shifting under subsequent high-pressure spraying or airflow purging.

[0030] Next, the pre-treatment cleaning stage begins. The second water pump 12 is started, and the clean water located on the purification side of the water tank 9 is drawn out through the clean water pumping pipe 11 and transported to the conical spray pipe 23 inside the cabin 1 through the clean water outlet pipe 13. Finally, the conical nozzle 24 sprays a fan-shaped or conical water curtain downwards to wash away the dust and oil on the surface of the parts. The wastewater generated by the washing, carrying impurities, flows through the wastewater hole 3 and into the wastewater tank 4 at the bottom. At this time, the first water pump 5 is started, and the sewage in the wastewater tank 4 is pumped to the water inlet side of the water tank 9 through the wastewater pumping pipe 6 and the wastewater outlet pipe 8. Under the action of gravity or pressure, the sewage passes through the filter screen 10, and the impurities are intercepted. The filtered clean water flows into the water outlet side of the water tank 9 for the second water pump 12 to pump again, thereby realizing the recycling of cleaning water.

[0031] After the parts are cleaned and preliminarily dried, the top spraying structure 16 is activated. The anti-rust paint is delivered into the annular anti-rust spray pipe 17 and atomized by the various anti-rust nozzles 15 distributed below it, forming a concentrated spray field that evenly covers the surface of the parts. At the same time or after the spraying is completed, in order to accelerate the curing of the paint and ensure the coating quality, the heating pipe 2 and the motor 19 are activated. The motor 19 drives the centrifugal circulating fan 20 to run at high speed, drawing in and pressurizing the air in the chamber 1 through the exhaust pipe 22, and then sending it back to the bottom of the chamber 1 through the air inlet pipe 21, forming a closed-loop hot airflow circulation from bottom to top. During this process, the temperature sensor 14 monitors the temperature inside the chamber in real time and feeds back the signal to adjust the heating power of the heating pipe 2, so that the inside of the chamber 1 is always maintained at a preset constant temperature, avoiding coating defects caused by temperature fluctuations or uneven drying, and finally efficiently completing the anti-rust spraying task of the automotive parts.

[0032] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A rust-preventive spraying device for automotive parts with a constant temperature drying chamber, comprising a chamber body (1) and a spraying structure (16) fixed to the inner top wall of the chamber body (1), wherein the output end of the spraying structure (16) is connected to an annular rust-preventive spray pipe (17), and a plurality of rust-preventive nozzles (15) are connected to the annular rust-preventive spray pipe (17). Its features are: Wastewater tank (4) is fixedly installed on the bottom of the inner wall of the cabin (1), clamping base (7) is fixedly installed on the top of the wastewater tank (4), cylinder (25) is fixedly installed on the bottom of the clamping base (7), and clamping block (26) is fixedly connected to the output end of the cylinder (25). A support frame (18) is fixedly installed on the outer wall of the cabin (1). A motor (19) is fixedly installed on the support frame (18). The output shaft of the motor (19) is connected to a centrifugal circulating fan (20). The air inlet of the centrifugal circulating fan (20) is connected to the interior of the cabin (1) through an exhaust pipe (22). The air outlet of the centrifugal circulating fan (20) is connected to the interior of the cabin (1) through an air inlet pipe (21). A heating pipe (2) and a temperature sensor (14) are fixedly installed on the inner wall of the cabin (1). Wastewater tank (4) is connected to first water pump (5), first water pump (5) is connected to water tank (9), water tank (9) is equipped with filter screen (10), water tank (9) is connected to second water pump (12), second water pump (12) is connected to conical nozzle (23) extending into the cabin (1), conical nozzle (24) is fixedly installed on conical nozzle (23).

2. The rust-preventive spraying device for automotive parts with a constant temperature drying chamber according to claim 1, characterized in that, The surface of the wastewater tank (4) is provided with several wastewater holes (3), and the bottom of the wastewater tank (4) is connected to the input end of the first water pump (5) through the wastewater pumping pipe (6).

3. The rust-preventive spraying device for automotive parts with a constant temperature drying chamber according to claim 2, characterized in that, The output end of the first water pump (5) is connected to the water tank (9) through the wastewater outlet pipe (8). The filter screen (10) is fixedly installed inside the water tank (9) and divides the water tank (9) into two parts.

4. The rust-preventive spraying device for automotive parts with a constant temperature drying chamber according to claim 3, characterized in that, Inside the water tank (9), on the side away from the wastewater outlet pipe (8) of the filter screen (10), there is a clean water pumping pipe (11). One end of the clean water pumping pipe (11) is located inside the water tank (9), and the other end is connected to the input end of the second pumping pump (12).

5. The rust-preventive spraying device for automotive parts with a constant temperature drying chamber according to claim 4, characterized in that, The output end of the second water pump (12) is fixedly connected to the conical nozzle (23) through the clean water outlet pipe (13), and the spray port of the conical nozzle (24) faces the clamping base (7).

6. The rust-preventive spraying device for automotive parts with a constant temperature drying chamber according to claim 1, characterized in that, The annular anti-rust spray pipe (17) is located above the clamping base (7), and the anti-rust nozzles (15) are evenly distributed on the side of the annular anti-rust spray pipe (17) facing the clamping base (7).

7. The rust-preventive spraying device for automotive parts with a constant temperature drying chamber according to claim 1, characterized in that, The connection between the exhaust pipe (22) and the cabin (1) is located on the upper part of the side wall of the cabin (1), the connection between the air inlet pipe (21) and the cabin (1) is located on the lower part of the side wall of the cabin (1), and the heating pipe (2) is fixedly installed on the inner wall of the cabin (1) by a fixing bracket.

8. The rust-preventive spraying device for automotive parts with a constant temperature drying chamber according to claim 1, characterized in that, There are two clamping blocks (26), and the two clamping blocks (26) are arranged opposite to each other on the clamping base (7). The cylinder (25) drives the two clamping blocks (26) to move towards each other or away from each other.

9. A rust-preventive spraying device for automotive parts with a constant temperature drying chamber according to claim 5, characterized in that, The conical nozzle (23) is fixedly connected to the inner wall of the cabin (1), and the conical nozzle (24) is located below the annular anti-rust nozzle (17).

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