Vehicle frame paint film drying equipment and drying method thereof

Abstract

The invention discloses vehicle frame paint film drying equipment and a drying method thereof, and relates to the technical field of drying equipment. The equipment comprises a drying box body, an ultraviolet drying assembly, a frame conveying mechanism, an air circulation dehumidification system and a control system. The interior of the drying box body is divided into a preheating area, a main drying area and a cooling area through an air partition assembly, and the frame conveying mechanism penetrates through all the areas and is used for bearing and conveying frames. The ultraviolet drying assembly comprises a plurality of ultraviolet lamp sets, and each ultraviolet lamp set is provided with an independent light gathering cover and an independent angle adjusting mechanism. The air circulation dehumidification system comprises a circulating fan, a condenser and an air duct assembly, and hot air dehydration cyclic utilization is achieved. The control system is electrically connected with all the modules, and drying parameters can be adjusted according to the characteristics of a frame paint film. In order to solve the problem that car frame paint films are prone to caking during drying, the paint films are evenly dried through angle adjustment and light condensation design in combination with the hot air circulation dehumidification technology, the drying efficiency is improved, and energy consumption is reduced.

Description

Technical Field

[0001] This invention relates to the field of drying equipment technology, and in particular to a vehicle frame paint film drying device and its drying method. Background Technology

[0002] As the core load-bearing component of a vehicle, the paint film on the chassis not only serves a decorative purpose but, more importantly, provides rust and corrosion protection, extending the chassis's service life. Drying the chassis paint film is a crucial step in chassis production, requiring uniform drying without lumps or bubbles, and demanding drying efficiency that meets the requirements of industrial production.

[0003] In existing technologies, the drying of vehicle frame paint films mostly uses traditional box-type dryers or single-channel dryers, which presents the following technical problems: Traditional equipment often uses a single heating source or UV lamp assembly, resulting in uneven exposure of the paint film on the frame surface to light and heat. This can easily lead to localized over-drying or under-drying, and the complex structure of the frame makes it difficult to effectively dry the corners and edges. The paint film gradually hardens during the drying process, and traditional single-channel dryers often use flat plates with a large contact area between the paint film and the plate, lacking vibration assistance. This can easily cause localized paint film accumulation and clumping, affecting product quality. Existing equipment often uses direct hot air exhaust or a single heat exchange structure, resulting in low thermal energy utilization. Furthermore, the need for continuous replenishment of cold air and reheating during the drying process increases energy consumption. Traditional drying equipment is often a one-piece molded structure, making it bulky, inconvenient for transportation and maintenance, and unable to flexibly adjust drying parameters according to the characteristics of different frame paint films. The single drying zone design prevents preheating, drying, and cooling processes from being carried out simultaneously, resulting in a long overall operation cycle and making it difficult to meet the needs of large-scale production. Summary of the Invention

[0004] In view of the above-mentioned problems existing in the prior art, the present invention provides a vehicle frame paint film drying equipment and drying method to solve the technical problems of long operation cycle, low drying efficiency and insufficient local irradiation in the existing vehicle frame paint film drying process.

[0005] The technical solution adopted in this invention is as follows: The first objective of this invention is to provide a vehicle frame paint film drying device, including a drying chamber, an ultraviolet drying component, a vehicle frame conveying mechanism, an air circulation dehumidification system, and a control system; The drying chamber is a frame structure with openings at both ends. Its interior is divided into a preheating zone, a main drying zone, and a cooling zone along the length direction by an air-insulating component. The front end of the drying chamber is provided with a feed inlet, and the rear end of the drying chamber is provided with a discharge outlet. The frame conveying mechanism is installed through the preheating zone, the main drying zone and the cooling zone. The frame conveying mechanism is used to carry the frame and feed the frame into the drying chamber from the feed port at a preset conveying speed for paint film curing and drying, and then convey it off the production line from the discharge port. The ultraviolet drying assembly includes multiple sets of ultraviolet lamps and multiple corresponding angle adjustment mechanisms. The multiple sets of ultraviolet lamps are alternately arranged in the preheating zone, main drying zone and cooling zone along the length of the drying chamber through the angle adjustment mechanisms. The air circulation dehumidification system includes a first air duct assembly, a second air duct assembly, and a third air duct assembly. The first air duct assembly is located at the top of the drying chamber and communicates with the preheating zone. The second air duct assembly is located at the top of the drying chamber and communicates with the main drying zone. The third air duct assembly is located at the top of the drying chamber and communicates with the cooling zone. The control system is electrically connected to the ultraviolet drying component, the vehicle frame conveying mechanism, and the air circulation dehumidification system, and is used to adjust the drying parameters.

[0006] Furthermore, both the inlet and the outlet include a vertically arranged air baffle and a horizontally arranged partition. A gap is left between the air baffle and the partition to allow the frame conveying mechanism to pass through. The air baffle is made of a high-temperature resistant elastic material.

[0007] 3. The vehicle frame paint film drying equipment according to claim 1, characterized in that the vehicle frame conveying mechanism includes two sets of horizontally symmetrically arranged conveying roller tracks, each set of conveying roller tracks including a support frame, a drive assembly, a conveying roller seat and a transmission sprocket assembly, wherein a plurality of conveying roller seats are horizontally and evenly spaced on the top of the support frame, and the conveying roller seats are adapted to rotate horizontally on the support frame; the two sides of the transmission sprocket assembly are respectively sleeved and engaged on the same side of two adjacent conveying roller seats, and the end of the first conveying roller seat facing away from the transmission sprocket assembly is also driven and installed with a drive assembly, the drive assembly drives the conveying roller seat to rotate, thereby driving the transmission sprocket assembly to move, the movement of the transmission sprocket assembly further drives the adjacent conveying roller seats to rotate, and thereby drives all conveying roller seats to rotate synchronously.

[0008] Furthermore, the power of the ultraviolet lamp assembly is 300-500W in the preheating zone, 800-1200W in the main drying zone, and 100-200W in the cooling zone.

[0009] Furthermore, each group of ultraviolet lamps includes an ultraviolet lamp, and each ultraviolet lamp is equipped with a condenser and a lamp tube, wherein the condenser has a parabolic structure.

[0010] Furthermore, the angle adjustment mechanism includes a connecting beam horizontally connected to the drying chamber, two angle adjustment plates vertically and parallelly connected below the connecting beam, and an adjustment seat adapted to be rotatably connected between the two angle adjustment plates. The angle adjustment plates are vertically provided with a plurality of evenly distributed angle adjustment grooves, and the adjustment seat is adapted to adjust the tilt angle of the adjustment seat through the angle adjustment grooves.

[0011] Furthermore, the first air duct assembly includes a first motor assembly and a first fan body arranged along the length of the drying chamber. The first motor assembly is driven and installed on one side of the first fan body. The first motor assembly is electrically connected to the control system. The bottom of the first motor assembly is supported on the top of the drying chamber by a square shell. The side of the first fan body away from the first motor assembly is embedded in the top of the drying chamber through a first air inlet channel, and the end of the first air inlet channel extends into the interior of the preheating zone. The second air duct assembly includes a second motor assembly and a second fan body arranged along the width direction of the drying chamber. The second motor assembly is driven and installed on one side of the second fan body. The second motor assembly is electrically connected to the control system. The bottom of the second motor assembly is supported on the top of the drying chamber by a square shell. A second air outlet channel is provided on the side of the second fan body away from the second motor assembly. The second fan body is embedded in the top of the drying chamber through the second air inlet channel, and the end of the second air inlet channel extends into the interior of the main drying area. The third air duct assembly includes a third motor assembly and a third fan body arranged along the width direction of the drying chamber. The third motor assembly is driven and installed on one side of the third fan body. The third motor assembly is electrically connected to the control system. The bottom of the third motor assembly is supported on the top of the drying chamber by a square shell. A third air inlet channel is provided on the side of the third fan body away from the second motor assembly. The third fan body is embedded in the top of the drying chamber through the third air inlet channel, and the end of the third air inlet channel extends into the interior of the cooling zone.

[0012] Furthermore, a circulation box is also provided on the opposite side of the drying box and the frame conveying mechanism. A row of circulating fans is evenly distributed on one side wall of the circulation box, and an inspection door is provided on the other side wall of the circulation box. Locking rollers and adjustment seats are provided around the bottom of the circulation box.

[0013] Furthermore, the control system includes a controller, a temperature sensor, a humidity sensor, and an ultraviolet intensity sensor. The temperature sensor, the humidity sensor, and the ultraviolet intensity sensor are respectively located in the preheating zone, the main drying zone, and the cooling zone. The controller is adapted to automatically adjust the power of the ultraviolet lamp group, the frame conveying speed of the frame conveying mechanism, and the speed of the circulating fan of the air circulation dehumidification system based on the detection data.

[0014] A second objective of this invention is to provide a drying method based on the aforementioned vehicle frame paint film drying equipment, comprising the following steps: S1: Equipment Debugging The preheating temperature is set to 40-60℃, the main drying temperature to 80-100℃, and the cooling temperature to 30-40℃ by the control system. The angle of the ultraviolet lamp group is adjusted to 15-30°, and the frame conveying speed is adjusted to 0.5-1m / min. S2: Feed preheating The frame to be dried is placed on the conveyor roller seat of the frame conveying mechanism through the feed port. The frame conveying mechanism drives the frame into the preheating zone. The ultraviolet lamp group and the air circulation dehumidification system are started to preheat the paint film on the frame. S3: Main drying process After the frame enters the main drying area, high-power ultraviolet lamps irradiate alternately, and a concentrator focuses ultraviolet rays to increase the drying intensity. The air circulation dehumidification system removes the hot air that has absorbed moisture to dehydrate it. S4: Cooling and Discharging After the frame enters the cooling zone, the air circulation dehumidification system switches to cooling mode to reduce the surface temperature of the frame to the set range, and the frame conveying mechanism sends the dried frame out from the discharge port. S5: Equipment Maintenance After the drying process is completed, shut down all modules and clean and maintain the ultraviolet lamp assembly through the inspection door.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The drying chamber is divided into a preheating zone, a main drying zone, and a cooling zone by an air-insulating component, forming a three-section spatial layout. The vehicle frame conveyor mechanism runs through all three zones, providing a foundation for continuous drying. The zoning and angle design of the ultraviolet drying components, together with the air circulation dehumidification system and the control system, constitute an execution and control system. When the control system is activated, the drive component of the vehicle frame conveyor mechanism operates first, driving all conveyor rollers to rotate synchronously through the transmission sprocket assembly. The vehicle frame enters the preheating zone from the feed inlet and passes through the three zones sequentially along the conveying direction.

[0016] Within the preheating zone, 3 U The UV lamps, arranged in a U-shape, are activated. The concentrator focuses the UV rays from the lamps, and two lamps parallel to the conveying direction are symmetrically tilted at 60-75°, forming a top-coverage, side-slanted irradiation pattern to preheat the paint film on the frame surface. In the main drying zone, one UV lamp is activated perpendicular to the conveying direction and parallel to the conveying mechanism. The concentrator focuses the UV rays vertically onto the frame, utilizing the maximum irradiation area for vertical direct irradiation to achieve core curing of the paint film (high temperature, strong irradiation, meeting drying intensity requirements). In the cooling zone, two UV lamps are activated symmetrically tilted at 75-90°, with the tilt angle close to vertical (but retaining a certain slanted irradiation range). This continues the slight drying effect and, in conjunction with the air circulation dehumidification system, cools and sets the paint film, preventing fogging or reduced adhesion due to temperature differences after exiting the oven. The control system adjusts the power of the UV lamps (irradiation intensity), the conveying speed of the frame conveying mechanism (drying time), and the wind speed / dehumidification capacity of the air circulation dehumidification system 4 in real time to ensure that each parameter matches the paint film type (e.g., water-based paint, oil-based paint).

[0017] Therefore, by using zoned drying and synchronous conveying, continuous and thorough drying is achieved, solving the problems of low batch drying efficiency and insufficient local irradiation in traditional equipment. By adjusting the angle and using a focusing design, the focusing cover improves energy utilization, and the zoned angles match the curing requirements, shortening the drying cycle by 30%-50% and reducing energy consumption by 20%-30% compared to traditional equipment. Through the control system and structural adaptation, it can adapt to different paint films and different sizes of vehicle frames in multiple scenarios. After curing, the paint film is free from defects such as cracking, fogging, and insufficient adhesion, improving the pass rate to over 95%. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the vehicle frame paint film drying equipment in an embodiment of the present invention; Figure 2 This is a three-dimensional structural diagram of the vehicle frame in an embodiment of the present invention; Figure 3 This is a three-dimensional structural schematic diagram of the frame conveying mechanism in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the ultraviolet drying component in one direction according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the ultraviolet drying component from another direction in an embodiment of the present invention; Figure 6 This is a three-dimensional structural diagram of the air circulation dehumidification system in an embodiment of the present invention; Figure 7 This is a schematic diagram of a one-way assembly structure of the first air duct assembly, the second air duct assembly, and the third air duct assembly in an embodiment of the present invention. Figure 8This is a schematic diagram of the assembly structure of the first air duct assembly, the second air duct assembly, and the third air duct assembly in another direction according to an embodiment of the present invention. Figure 9 This is a schematic diagram of the structural framework of the control system in an embodiment of the present invention; Figure 10 This is a schematic flowchart of a drying method based on a vehicle frame paint film drying device in an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1-Drying chamber; 11-Preheating zone; 12-Main drying zone; 13-Cooling zone; 14-Feed inlet; 15-Discharge outlet; 2-UV drying assembly; 21-UV lamp assembly; 211-UV lamp; 2111-Concentrator; 2112-Lamp tube; 22-Angle adjustment mechanism; 221-Connecting beam; 222-Angle adjustment plate; 2221-Angle adjustment groove; 223-Adjustment seat; 3-Car frame conveyor mechanism; 31-Conveyor roller conveyor; 311-Support frame; 312-Drive assembly; 313-Conveyor roller seat; 314-Transmission sprocket assembly; 4- Air circulation dehumidification system; 41-First air duct assembly; 411-First motor assembly; 412-First fan body; 4121-First volute; 41211-First air inlet channel; 41212-First air outlet channel; 42-Second air duct assembly; 421-Second motor assembly; 422-Second fan body; 4221-Second air inlet channel; 42211-First circular pipe opening; 42212-Air volume regulating valve; 4222-Second air outlet channel; 43-Third air duct assembly; 431-Third motor assembly; 432-Third fan body; 4321-Third air inlet channel; 43211-Second circular pipe inlet; 4322-Third air outlet channel; 44-Circulation housing; 441-Circulation fan; 443-Locking roller; 444-Adjusting base; 5-Control system; 51-Controller; 52-Temperature sensor; 53-Humidity sensor; 54-Ultraviolet intensity sensor; 6-Frame. Detailed Implementation

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] Please see Figure 1-9As shown, this embodiment of the invention provides a vehicle frame paint film drying device, which includes a drying chamber 1, an ultraviolet drying component 2, a vehicle frame conveying mechanism 3, an air circulation dehumidification system 4, and a control system 5, wherein: The drying chamber 1 is a frame structure with openings at both ends. Its interior is divided into a preheating zone 11, a main drying zone 12 and a cooling zone 13 along the length direction by an air-insulating component. The front end of the drying chamber 1 is provided with a feed inlet 14 and the rear end of the drying chamber 1 is provided with a discharge outlet 15. The frame conveying mechanism 3 is installed through the preheating zone 11, the main drying zone 12, and the cooling zone 13. The frame conveying mechanism 3 includes two sets of horizontally symmetrical conveying roller tracks 31. Each set of conveying roller tracks 31 includes a support frame 311, a drive assembly 312, a conveying roller seat 313, and a transmission sprocket assembly 314. Multiple conveying roller seats 313 are horizontally and evenly spaced on the top of the support frame 311, and the conveying roller seats 313 are adapted to rotate horizontally on the support frame 311. The two sides of the transmission sprocket assembly 314 are respectively sleeved and engaged on the same side of two adjacent conveying roller seats 313. The end of the first conveying roller seat 313 that is away from the transmission sprocket assembly 314 is also driven to install the drive assembly 312. In this way, the drive assembly 312 can drive the conveying roller seat 313 to rotate, thereby driving the transmission sprocket assembly 314 to move. The movement of the transmission sprocket assembly 314 in turn drives the adjacent conveying roller seats 313 to rotate, thereby driving all the conveying roller seats 313 to rotate synchronously.

[0022] The ultraviolet drying assembly 2 includes multiple sets of ultraviolet lamps 21 and multiple corresponding angle adjustment mechanisms 22. The multiple sets of ultraviolet lamps 21 are alternately arranged in the preheating zone 11, the main drying zone 12 and the cooling zone 13 along the length of the drying chamber 1 through the angle adjustment mechanisms 22. Each set of ultraviolet lamps 21 includes an ultraviolet lamp 211, and each ultraviolet lamp 211 is equipped with a condenser hood 2111 and a lamp tube 2112.

[0023] In terms of specific structural layout, the preheating zone 11 is equipped with three ultraviolet lamp groups 21, which are arranged in a U-shape directly above the frame conveying mechanism 3. Two of the ultraviolet lamp groups 21 extend parallel to the frame conveying direction, and the first angle formed by the two ultraviolet lamp groups 21 being symmetrically tilted perpendicular to the frame conveying direction is 60-75 degrees. The main drying zone 12 is equipped with one ultraviolet lamp group 21 extending perpendicular to the frame conveying direction, and this ultraviolet lamp group 21 is parallel to the frame conveying mechanism 3 to maximize the illumination of the frame 6 conveyed by the frame conveying mechanism 3. The cooling zone 13 is equipped with two ultraviolet lamp groups 21, and the two ultraviolet lamp groups 21 are symmetrically tilted parallel to the frame conveying direction with a second angle range of 75-90 degrees.

[0024] The control system 5 is electrically connected to the ultraviolet drying component 2, the frame conveying mechanism 3, and the air circulation dehumidification system 4, and is used to adjust the drying parameters.

[0025] In this embodiment, the drying chamber 1 is divided into a preheating zone 11, a main drying zone 12, and a cooling zone 13 by an air-insulating component, forming a three-section spatial layout. The frame conveyor mechanism 3 runs through all three zones, providing a foundation for continuous drying. The partitioned arrangement and angle design of the ultraviolet drying component 2, together with the air circulation dehumidification system 4 and the control system 5, constitute an execution and control system. When the control system 5 is activated, the drive component 312 of the frame conveyor mechanism 3 operates first, driving all the conveyor roller seats 313 to rotate synchronously through the transmission sprocket assembly 314. The frame 6 enters the preheating zone 11 from the feed inlet 14 and passes through the three zones sequentially along the conveying direction.

[0026] In the preheating zone 11, three U-shaped UV lamp groups 21 are activated, with the focusing cover 2111 converging the UV rays from the lamp tubes 2112. Two lamp groups parallel to the conveying direction are symmetrically tilted at an angle of 60-75°, forming a top-full coverage and side-oblique irradiation mode to preheat the paint film on the surface of the frame 6. In the main drying zone 12, one UV lamp group 21 perpendicular to the conveying direction and parallel to the conveying mechanism is activated, with the focusing cover 2111 focusing the UV rays vertically onto the frame 6. Utilizing the design of maximum vertical irradiation area, the core curing of the paint film is achieved (high temperature, strong irradiation, meeting the drying intensity requirements). In the cooling zone 13, two symmetrically tilted UV lamp groups 21 at 75-90° are activated, with the tilt angle close to vertical (but retaining a certain oblique irradiation range). This continues the slight drying effect and, in conjunction with the air circulation dehumidification system 4, achieves paint film cooling and shaping, preventing fogging or decreased adhesion of the paint film due to temperature differences after exiting the oven. The control system 5 adjusts the power (irradiation intensity) of the UV lamp group 21 and the frame conveying mechanism 3 in real time. The conveying speed (drying time) and the wind speed / dehumidification capacity of the air circulation dehumidification system 4 are adjusted to ensure that each parameter matches the type of paint film (such as water-based paint or oil-based paint).

[0027] Therefore, by using zoned drying and synchronous conveying, continuous and thorough drying is achieved, solving the problems of low batch drying efficiency and insufficient local irradiation in traditional equipment. By adjusting the angle and using a focusing design, the focusing cover improves energy utilization, and the zoned angles match the curing requirements, shortening the drying cycle by 30%-50% and reducing energy consumption by 20%-30% compared to traditional equipment. Through the control system and structural adaptation, it can adapt to different paint films and different sizes of vehicle frames in multiple scenarios. After curing, the paint film is free from defects such as cracking, fogging, and insufficient adhesion, improving the pass rate to over 95%.

[0028] Specifically, please refer to Figure 1 , 6As shown, in one embodiment of the present invention, the angle adjustment mechanism 22 includes a connecting beam 221 horizontally connected in the drying chamber 1, two angle adjustment plates 222 vertically and parallelly connected below the connecting beam 221, and an adjustment seat 223 adapted to be rotatably connected between the two angle adjustment plates 222. The angle adjustment plates 222 are vertically provided with a plurality of evenly distributed angle adjustment grooves 2221, and the adjustment seat 223 is adapted to adjust the tilt angle of the adjustment seat 223 through the angle adjustment grooves 2221.

[0029] Therefore, by using multi-position adjustment slots and rotating adjustment seats, the UV lamp group can achieve precise angle adjustment and stable positioning, thus solving the core problem that traditional fixed-angle lamp groups cannot adapt to multiple scenarios. The adjustment mechanism provides the UV lamp group with angle adjustment function, enabling the same equipment to achieve the functions of wide-coverage preheating in the preheating zone, strong focused curing in the main drying zone, and precise supplementary curing in the cooling zone (the angle requirements of different zones can be achieved by switching the adjustment slots), simplifying the equipment structure and reducing manufacturing costs.

[0030] Specifically, please refer to Figure 1 , 6 As shown, in one embodiment of the present invention, the air circulation dehumidification system 4 includes a first air duct assembly 41, a second air duct assembly 42, and a third air duct assembly 43. The first air duct assembly 41 is disposed at the top of the drying chamber 1 and communicates with the preheating zone 11; the second air duct assembly 42 is disposed at the top of the drying chamber 1 and communicates with the main drying zone 12; and the third air duct assembly 43 is disposed at the top of the drying chamber 1 and communicates with the cooling zone 13. The first air duct assembly 41 includes a first motor assembly 411 and a first fan body 412 arranged along the length of the drying chamber 1. The first motor assembly 411 is driven and installed on one side of the first fan body 412. The first motor assembly 411 is electrically connected to the control system 5. The bottom of the first motor assembly 411 is supported on the top of the drying chamber 1 by a square shell. The side of the first fan body 412 away from the first motor assembly 411 is embedded in the top of the drying chamber 1 through a first air inlet channel 41211. The end of the first air inlet channel 41211 extends into the interior of the preheating zone 11. The top of the first fan body 412 is provided with a first air outlet channel 41212.

[0031] As a preferred embodiment, the first air inlet channel 41211 is configured as a square pipe opening with a size of 20×20cm.

[0032] The first fan body 412 includes a first volute 4121, a first air outlet channel 41212 is provided on the top of the first volute 4121, and the side wall of the first volute 4121 is connected to the interior of the preheating zone 11 through the first air inlet channel 41211.

[0033] The second air duct assembly 42 includes a second motor assembly 421 and a second fan body 422 arranged along the width direction of the drying chamber 1. The second motor assembly 421 is driven and installed on one side of the second fan body 422. The second motor assembly 421 is electrically connected to the control system 5. The bottom of the second motor assembly 421 is supported on the top of the drying chamber 1 by a square shell. A second air outlet duct 4222 is provided on the side of the second fan body 422 away from the second motor assembly 421. The second fan body 422 is embedded in the top of the drying chamber 1 through the second air inlet duct 4221, and the end of the second air inlet duct 4221 extends into the interior of the main drying area 12.

[0034] In a preferred embodiment, the second air outlet channel 4222 is configured as a circular pipe opening, and the second air inlet channel 4221 is composed of four evenly distributed first circular pipe openings 42211. Each first circular pipe opening 42211 is also provided with an air volume regulating valve 42212 to regulate the air volume.

[0035] The third air duct assembly 43 includes a third motor assembly 431 and a third fan body 432 arranged along the width direction of the drying chamber 1. The third motor assembly 431 is driven and installed on one side of the third fan body 432. The third motor assembly 431 is electrically connected to the control system 5. The bottom of the third motor assembly 431 is supported on the top of the drying chamber 1 by a square shell. The third fan body 432 is provided with a third air inlet channel 4321 on the side away from the second motor assembly 421. The third fan body 432 is embedded in the top of the drying chamber 1 through the third air inlet channel 4321, and the end of the third air inlet channel 4321 extends into the interior of the cooling zone 13.

[0036] A third air inlet channel 4321 is provided on the side wall of the third fan body 432 away from the third motor assembly 431, and a third air outlet channel 4322 is provided on the top of the third fan body 432. As a preferred embodiment, the third air inlet channel 4321 is composed of two evenly distributed second circular pipe openings 43211.

[0037] Specifically, in one embodiment of the present invention, both the inlet 14 and the outlet 15 include a vertically arranged air baffle and a horizontally arranged partition. A gap is left between the air baffle and the partition for the frame conveying mechanism 3 to pass through. The air baffle is made of a high-temperature resistant elastic material.

[0038] Therefore, the three-dimensional sealing structure isolates the internal and external environments of the box, adapting to the dynamic process of vehicle frame conveying and the high-temperature environment of the box. This stabilizes the environment, reduces energy consumption, improves quality, extends lifespan, and enhances versatility. It forms a closed-loop synergy with the overall drying equipment's partition design, conveying mechanism, and dehumidification system, solving the key problems of traditional drying equipment such as inlet / outlet sealing failure, poor adaptability, and high energy consumption.

[0039] Specifically, please refer to Figure 1 As shown, in one embodiment of the present invention, a circulation box 44 is also provided on the opposite side of the drying box 1 and the frame conveying mechanism 3. A row of circulation fans 441 are evenly distributed on one side wall of the circulation box 44, and an inspection door is provided on the other side wall of the circulation box 44. Locking rollers 443 and adjusting seats 444 are provided around the bottom of the circulation box 44.

[0040] In this embodiment, the circulating chamber 44 is the core of the airflow guidance of the air circulation system. The circulating fan 441 provides power and directional guidance to the chamber, forming a cycle of blowing, sucking and dehumidifying with the dehumidification system, thus solving the problem of insufficient airflow caused by the lack of guidance in the dehumidification system alone. The circulating chamber 44 is connected to the drying chamber 1 to form a closed airflow channel. With the sealing structure of the inlet / outlet, airflow leakage is further reduced, ensuring the stability of temperature and humidity inside the drying chamber.

[0041] Specifically, please refer to Figure 4 , 5 As shown, in one embodiment of the present invention, the power of the ultraviolet lamp assembly 21 in the preheating zone 11 is 300-500W, the power in the main drying zone 12 is 800-1200W, and the power in the cooling zone 13 is 100-200W. The focusing cover 2111 has a parabolic structure. The angle adjustment mechanism 22 can realize the angle adjustment of the ultraviolet lamp assembly 21 from 0-45° through the angle adjustment plate 222, the adjustment seat 223 and the locking bolt.

[0042] Specifically, please refer to Figure 9 As shown, in one embodiment of the present invention, the control system 5 includes a controller 51, a temperature sensor 52, a humidity sensor 53, and an ultraviolet intensity sensor 54. The sensors are respectively installed in the preheating zone 11, the main drying zone 12, and the cooling zone 13. The controller 51 can automatically adjust the power of the ultraviolet lamp group 21, the material conveying speed, and the speed of the circulating fan according to the detection data.

[0043] Specifically, please refer to Figure 1 As shown, in one embodiment of the present invention, the bottom of the circulation box 44 is provided with a brakeable locking roller 443, the drying box 1, the ultraviolet drying component 2, and the air circulation dehumidification system 4 are all connected by bolts in a detachable manner, the maintenance door is connected to the circulation box 44 by a hinge, and is provided with a sealing strip.

[0044] Please see Figure 10 As shown, another embodiment of the present invention also provides a drying method based on a vehicle frame paint film drying device, the drying method comprising the following steps: S1: Equipment Debugging The preheating temperature is set to 40-60℃, the main drying temperature to 80-100℃, and the cooling temperature to 30-40℃ through the control system 5. The angle of the ultraviolet lamp group 21 is adjusted to 15-30°, and the frame conveying speed is adjusted to 0.5-1m / min. S2: Feed preheating The frame 6 to be dried is placed on the conveyor roller seat 313 of the frame conveying mechanism 3 through the feed port 14. The frame conveying mechanism 3 drives the frame 6 into the preheating zone 11. The ultraviolet lamp group 21 and the air circulation dehumidification system 4 are started to preheat the paint film on the frame 6. S3: Main drying process After the frame 6 enters the main drying area 12, the high-power ultraviolet lamp group 21 irradiates alternately, the light-concentrating cover 2111 focuses the ultraviolet rays to improve the drying intensity, and the air circulation dehumidification system 4 removes the hot air that has absorbed water vapor to dehydrate. S4: Cooling and Discharging After the frame 6 enters the cooling zone 13, the air circulation dehumidification system 4 switches to the cooling mode to reduce the surface temperature of the frame to the set range, and the frame conveying mechanism 3 sends the dried frame 6 out from the discharge port 15. S5: Equipment Maintenance After the drying process is completed, shut down all modules and clean and maintain the ultraviolet lamp group 21 through the inspection door.

[0045] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the scope of protection of this invention.

Claims

1. A vehicle frame paint film drying device, characterized in that, Includes drying chamber, ultraviolet drying components, vehicle frame conveying mechanism, air circulation dehumidification system and control system; The drying chamber is a frame structure with openings at both ends. Its interior is divided into a preheating zone, a main drying zone, and a cooling zone along the length direction by an air-insulating component. The front end of the drying chamber is provided with a feed inlet, and the rear end of the drying chamber is provided with a discharge outlet. The frame conveying mechanism is installed through the preheating zone, the main drying zone and the cooling zone. The frame conveying mechanism is used to carry the frame and feed the frame into the drying chamber from the feed port at a preset conveying speed for paint film curing and drying, and then convey it off the production line from the discharge port. The ultraviolet drying assembly includes multiple sets of ultraviolet lamps and multiple corresponding angle adjustment mechanisms. The multiple sets of ultraviolet lamps are alternately arranged in the preheating zone, main drying zone and cooling zone along the length of the drying chamber through the angle adjustment mechanisms. The air circulation dehumidification system includes a first air duct assembly, a second air duct assembly, and a third air duct assembly. The first air duct assembly is located at the top of the drying chamber and communicates with the preheating zone. The second air duct assembly is located at the top of the drying chamber and communicates with the main drying zone. The third air duct assembly is located at the top of the drying chamber and communicates with the cooling zone. The control system is electrically connected to the ultraviolet drying component, the vehicle frame conveying mechanism, and the air circulation dehumidification system, and is used to adjust the drying parameters.

2. The vehicle frame paint film drying equipment according to claim 1, characterized in that, Both the inlet and outlet include a vertically arranged air baffle and a horizontally arranged partition. A gap is left between the air baffle and the partition to allow the frame conveying mechanism to pass through. The air baffle is made of a high-temperature resistant elastic material.

3. The vehicle frame paint film drying equipment according to claim 1, characterized in that, The vehicle frame conveying mechanism includes two sets of horizontally symmetrically arranged conveyor roller tracks. Each set of conveyor roller tracks includes a support frame, a drive assembly, conveyor roller seats, and a transmission sprocket assembly. Multiple conveyor roller seats are horizontally and evenly spaced on the top of the support frame, and the conveyor roller seats are adapted to rotate horizontally on the support frame. The two sides of the transmission sprocket assembly are respectively sleeved and engaged on the same side of two adjacent conveyor roller seats. The end of the first conveyor roller seat facing away from the transmission sprocket assembly is also driven and installed with a drive assembly. The drive assembly drives the conveyor roller seat to rotate, which in turn drives the transmission sprocket assembly to move. The movement of the transmission sprocket assembly further drives the adjacent conveyor roller seats to rotate, thereby driving all conveyor roller seats to rotate synchronously.

4. The vehicle frame paint film drying equipment according to claim 1, characterized in that, The ultraviolet lamp assembly has a power of 300-500W in the preheating zone, 800-1200W in the main drying zone, and 100-200W in the cooling zone.

5. The vehicle frame paint film drying equipment according to claim 1, characterized in that, Each group of ultraviolet lamps includes an ultraviolet lamp, and each ultraviolet lamp is equipped with a condenser and a lamp tube, wherein the condenser has a parabolic structure.

6. The vehicle frame paint film drying equipment according to claim 1, characterized in that, The angle adjustment mechanism includes a connecting beam horizontally connected to the drying chamber, two vertically parallel angle adjustment plates connected below the connecting beam, and an adjustment seat adapted to be rotatably connected between the two angle adjustment plates. The angle adjustment plates are vertically provided with a plurality of evenly distributed angle adjustment grooves, and the adjustment seat is adapted to adjust the tilt angle of the adjustment seat through the angle adjustment grooves.

7. The vehicle frame paint film drying equipment according to claim 1, characterized in that, The first air duct assembly includes a first motor assembly and a first fan body arranged along the length of the drying chamber. The first motor assembly is driven and installed on one side of the first fan body. The first motor assembly is electrically connected to the control system. The bottom of the first motor assembly is supported on the top of the drying chamber by a square shell. The side of the first fan body away from the first motor assembly is embedded in the top of the drying chamber through a first air inlet channel, and the end of the first air inlet channel extends into the interior of the preheating zone. The second air duct assembly includes a second motor assembly and a second fan body arranged along the width direction of the drying chamber. The second motor assembly is driven and installed on one side of the second fan body. The second motor assembly is electrically connected to the control system. The bottom of the second motor assembly is supported on the top of the drying chamber by a square shell. A second air outlet channel is provided on the side of the second fan body away from the second motor assembly. The second fan body is embedded in the top of the drying chamber through a second air inlet channel, and the end of the second air inlet channel extends into the interior of the main drying area. The third air duct assembly includes a third motor assembly and a third fan body arranged along the width direction of the drying chamber. The third motor assembly is driven and installed on one side of the third fan body. The third motor assembly is electrically connected to the control system. The bottom of the third motor assembly is supported on the top of the drying chamber by a square shell. A third air inlet channel is provided on the side of the third fan body away from the second motor assembly. The third fan body is embedded in the top of the drying chamber through the third air inlet channel, and the end of the third air inlet channel extends into the interior of the cooling zone.

8. The vehicle frame paint film drying equipment according to claim 1, characterized in that, The drying chamber is located on the opposite side of the frame conveying mechanism, and a circulation chamber is also provided. A row of circulating fans is evenly distributed on one side wall of the circulation chamber, and an inspection door is provided on the other side wall of the circulation chamber. Locking rollers and adjustment seats are provided around the bottom of the circulation chamber.

9. The vehicle frame paint film drying equipment according to claim 1, characterized in that, The control system includes a controller, a temperature sensor, a humidity sensor, and an ultraviolet intensity sensor. The temperature sensor, the humidity sensor, and the ultraviolet intensity sensor are respectively located in the preheating zone, the main drying zone, and the cooling zone. The controller is adapted to automatically adjust the power of the ultraviolet lamp group, the frame conveying speed of the frame conveying mechanism, and the speed of the circulating fan of the air circulation dehumidification system based on the detection data.

10. A drying method based on the vehicle frame paint film drying equipment according to any one of claims 1-9, characterized in that, Includes the following steps: S1: Equipment Debugging The preheating temperature is set to 40-60℃, the main drying temperature to 80-100℃, and the cooling temperature to 30-40℃ by the control system. The angle of the ultraviolet lamp group is adjusted to 15-30°, and the frame conveying speed is adjusted to 0.5-1m / min. S2: Feed preheating The frame to be dried is placed on the conveyor roller seat of the frame conveying mechanism through the feed port. The frame conveying mechanism drives the frame into the preheating zone. The ultraviolet lamp group and the air circulation dehumidification system are started to preheat the paint film on the frame. S3: Main drying process After the frame enters the main drying area, high-power ultraviolet lamps irradiate alternately, and a concentrator focuses ultraviolet rays to increase the drying intensity. The air circulation dehumidification system removes the hot air that has absorbed moisture to dehydrate it. S4: Cooling and Discharging After the frame enters the cooling zone, the air circulation dehumidification system switches to cooling mode to reduce the surface temperature of the frame to the set range, and the frame conveying mechanism sends the dried frame out from the discharge port. S5: Equipment Maintenance After the drying process is completed, shut down all modules and clean and maintain the ultraviolet lamp assembly through the inspection door.

Images