Paint film weather resistance accelerated detection equipment with constant temperature and humidity control box

Abstract

The utility model belongs to paint weather resistance detection equipment technical field, specifically disclose paint film weather resistance accelerated detection equipment with constant temperature and humidity control box, including the box, the inside fixed connection of box has the connecting plate, is equipped with the test cavity in the top of connecting plate, the inside rotatory joint of test cavity has two pivot, the bottom of two pivot all has the disc through bolt connection, the bottom of every disc all is equipped with a plurality of xenon lamp, the top of box is equipped with two motor, and the output of two motor is fixed connection with corresponding pivot respectively, the inside of box is equipped with constant temperature and humidity control box, and the constant temperature and humidity control box is located the below of connecting plate, the utility model discloses the xenon lamp combination of pre -set differentiation irradiation intensity and disc switching mechanism, avoid the problem that the light and temperature coupling is caused because of the regulation light source height, ensure that the experiment data reflects the influence of single illumination factor to the paint film aging, effectively promote data reliability and causal analysis accuracy.

Description

Technical Field

[0001] This application relates to the technical field of paint weathering testing equipment, and more specifically, to accelerated testing equipment for the weathering resistance of paint films with a constant temperature and humidity control chamber. Background Technology

[0002] A paint film is a continuous solid film formed after coating is applied to the surface of a substrate and then dried or cured. It serves functions such as protection, decoration, and functionalization, and its properties are determined by the film-forming substances, pigments, fillers, and additives. Existing weather resistance testing equipment has many shortcomings, such as natural exposure testing cycles that can take several years, extremely low efficiency, and significant interference from environmental variables. Therefore, accelerated testing equipment is particularly necessary. Based on the principles of chemical reaction kinetics, it compresses the originally lengthy aging process into a few hundred hours by enhancing environmental factors such as light, temperature, and humidity, thereby significantly reducing research and development costs and improving testing efficiency.

[0003] Patent CN219641527U discloses a paint weathering resistance testing mechanism. This patent uses the operation of a first motor to drive a worm gear. Because the worm gear is movably connected to a worm wheel, it drives the worm wheel to rotate. Since the worm wheel is fixedly connected to a threaded rod, it drives the threaded rod to rotate. Because the threaded rod is threadedly connected to a first threaded sleeve, it drives the first threaded sleeve, which in turn pushes the support plate upward, causing the light intensity of the illumination lamp on the paint surface to change. This allows for the detection of the paint surface quality under different lighting conditions, achieving an effective paint weathering resistance testing effect.

[0004] Although the patent allows for changes in the intensity of light illuminating the painted surface, thereby enabling the testing of the paint surface quality under different lighting conditions and achieving effective paint weathering resistance testing, changing the height of the light source not only changes the light intensity but also the paint surface temperature. It is impossible to distinguish whether the aging of the paint film is caused by light or temperature, resulting in errors in the experimental data. Utility Model Content

[0005] To address the aforementioned issues, this application provides an accelerated testing device for the weather resistance of coating films, equipped with a constant temperature and humidity control chamber.

[0006] The accelerated testing equipment for the weather resistance of coating films with a constant temperature and humidity control chamber provided in this application adopts the following technical solution: An accelerated testing device for the weather resistance of paint films with a constant temperature and humidity control chamber includes a chamber body, a connecting plate fixedly connected inside the chamber body, and a test chamber on the top of the connecting plate. The test chamber has two rotating shafts inside, and the bottom of each shaft is bolted to a disc. Each disc has multiple xenon lamps at its bottom. The top of the chamber has two motors, and the outputs of the two motors are fixedly connected to the corresponding rotating shafts. The enclosure contains a constant temperature and humidity control box, which is located below the connecting plate.

[0007] By using the above technical solution, a combination of xenon lamps with pre-set differentiated irradiation intensities and a disc switching mechanism are established to avoid the problem of light and temperature coupling caused by adjusting the lamp height. This ensures that the experimental data reflects the impact of a single light factor on the aging of the paint film, effectively improving the reliability of the data and the accuracy of causal analysis.

[0008] Furthermore, the front of the chamber is equipped with two sealed doors, and the interior of the test chamber is fixedly connected with a partition. The bottom of the partition is fixedly connected to a connecting plate, and two test plates are provided above the connecting plate. Each test plate is equipped with a coating component.

[0009] Furthermore, the coating assembly is provided in two sets. Each set of coating assemblies includes two electric slide rails, which are fixedly connected to the connecting plate. A slider is slidably connected to the top of each of the two electric slide rails, and a plate is fixedly connected to the top of each of the two sliders. A paint roller is provided on the inner side of each of the two plates.

[0010] Furthermore, each paint roller is positioned above its corresponding test plate, and a rotating rod is fixedly connected inside each paint roller.

[0011] Furthermore, gears are fixedly connected to both ends of each rotating rod, and both ends of each rotating rod are rotatably connected to the corresponding plate body through damping bearings.

[0012] Furthermore, the top of the connecting plate is provided with two sets of rack plates, with two rack plates in each set, and each gear meshes with the corresponding rack plate.

[0013] Through the above technical solution, the coating component can evenly coat the paint onto the test board, which is convenient for the detection of the paint film. At the same time, two independent coating components can simultaneously coat different paints or parallel samples of the same paint, which is convenient for comparative experiments.

[0014] Furthermore, the box body has two fixedly connected feeding channels. The top of each feeding channel is connected to a paint inlet, and the bottom of each feeding channel is connected to a discharge outlet. The two discharge outlets are located above the corresponding paint rollers.

[0015] Furthermore, a control panel is provided at one end of the enclosure, which is electrically connected to two motors, multiple electric slide rails, xenon lamps, and a constant temperature and humidity control box.

[0016] In summary, this application includes at least one of the following beneficial technical effects: (1) This utility model avoids the problem of light and temperature coupling caused by adjusting the height of the lamp source by using a combination of xenon lamps with pre-set differentiated irradiation intensity and a disc switching mechanism, ensuring that the experimental data reflects the effect of a single light factor on the aging of the paint film, and effectively improving the reliability of the data and the accuracy of causal analysis. (2) By setting up the coating component, the present invention can evenly coat the paint on the test plate, which is convenient for the detection of the paint film. At the same time, the two independent coating components can coat different paints or parallel samples of the same paint at the same time, which is convenient for comparative experiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the box of this utility model; Figure 3 This is a bottom view of the present invention; Figure 4 This is a plan view of the present invention; Figure 5 This is a schematic diagram of the rack and gear connection structure of this utility model.

[0018] Explanation of reference numerals in the attached diagram: 1. Box body; 2. Paint inlet; 3. Motor; 4. Sealing door; 5. Disc; 6. Feed channel; 7. Connecting plate; 8. Test plate; 9. Electric slide rail; 10. Partition plate; 11. Xenon lamp; 12. Slider; 13. Plate body; 14. Rotating rod; 15. Damping bearing; 16. Gear; 17. Paint roller; 18. Rack plate; 19. Discharge port; 20. Test chamber; 21. Constant temperature and humidity control box; 22. Control panel. Detailed Implementation

[0019] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0020] Reference Figures 1-5 An accelerated testing device for the weather resistance of paint film with a constant temperature and humidity control chamber includes a chamber 1, a connecting plate 7 fixedly connected inside the chamber 1, and a test chamber 20 on the top of the connecting plate 7. The test chamber 20 has two rotating shafts inside, and the bottom of each shaft is connected to a disc 5 by bolts. Each disc 5 has multiple xenon lamps 11 at its bottom. The top of the housing 1 has two motors 3, and the output ends of the two motors 3 are fixedly connected to the corresponding rotating shafts. The interior of the enclosure 1 is equipped with a constant temperature and humidity control box 21, which is located below the connecting plate 7.

[0021] During operation, the constant temperature and humidity control chamber 21 first precisely regulates the temperature and humidity in the test chamber 20 to the set parameters (such as temperature ±0.5℃, relative humidity ±3%), providing a stable basic environment for the experiment. The internal temperature and humidity equipment are all existing technologies (not shown in the figure).

[0022] The irradiation intensity of each xenon lamp 11 is preset to a different value. When the irradiation intensity needs to be increased or decreased, the motor 3 drives the disc 5 to rotate. After the disc 5 has rotated, the xenon lamp 11 that has rotated to the top of the test plate 8 is turned on by manually operating the control panel 22 to perform an aging test on the paint film on the top of the test plate 8.

[0023] By using a combination of xenon lamps 11 with pre-set differentiated irradiation intensities and a switching mechanism with a disc 5, the problem of light and temperature coupling caused by adjusting the lamp height is avoided, ensuring that experimental data reflects the impact of a single irradiation factor on paint film aging, and effectively improving data reliability and the accuracy of causal analysis.

[0024] Reference Figures 2-5 The front side of the housing 1 is provided with two sealed doors 4. The test chamber 20 is fixedly connected with a partition 10. The bottom end of the partition 10 is fixedly connected to the connecting plate 7. Two test plates 8 are provided above the connecting plate 7. Each test plate 8 is provided with a coating component above it.

[0025] The two sealing doors 4 on the front side of the chamber 1 adopt a double-layer silicone sealing ring structure (which is existing technology and is not shown in the figure). This not only makes it easy for operators to open the doors to maintain and repair the xenon lamp 11, test plate 8 and other components inside the chamber 1, but also ensures the sealing of the test chamber 20 during the test, preventing external temperature and humidity fluctuations and dust pollution from interfering with the experimental environment.

[0026] The partition 10 inside the test chamber 20 is vertically fixed to the connecting plate 7, dividing the test chamber 20 into two independent areas. Each area is equipped with a test plate 8 and a coating component, which can simultaneously conduct two sets of comparative experiments under different conditions (such as different coating formulations or different light intensity tests). Physical isolation avoids interference between the two sets of experiments due to light radiation and heat conduction.

[0027] Reference Figures 3-5The coating assembly is provided in two sets. Each set of coating assemblies includes two electric slide rails 9, which are fixedly connected to the connecting plate 7. A slider 12 is slidably connected to the top of each of the two electric slide rails 9. A plate 13 is fixedly connected to the top of each of the two sliders 12. A paint roller 17 is provided on the inner side of each of the two plate bodies 13. Each paint roller 17 is located above the corresponding test plate 8. A rotating rod 14 is fixedly connected inside each paint roller 17. A gear 16 is fixedly connected to both ends of each rotating rod 14. Both ends of each rotating rod 14 are rotatably connected to the corresponding plate body 13 through a damping bearing 15. The top of the connecting plate 7 is provided with two sets of rack plates 18. The number of rack plates 18 in each set is set to two. Each gear 16 meshes with the corresponding rack plate 18.

[0028] When the coating component is in operation, the operator pours different coatings into the paint inlet 2. The coatings flow downward through the feed channel 6 inside the box 1 and finally flow out from the discharge port 19 located above the coating roller 17, evenly covering the surface of the coating roller 17.

[0029] At this time, the control panel 22 sends a command to start the electric slide rail 9. The electric slide rail 9 drives the slider 12 to make linear reciprocating motion on the track. The plate 13, which is fixedly connected to the slider 12, drives the paint roller 17 to move synchronously. Since the gears 16 at both ends of the rotating rod 14 are always engaged with the rack plate 18 at the top of the connecting plate 7, when the paint roller 17 is translated under the drive of the electric slide rail 9, the gears 16 will contact the rack plate 18. When the gears 16 and the rack plate 18 are engaged, the rotating rod 14 and the paint roller 17 will be driven to rotate continuously. Under the combined motion of translation and rotation, the paint roller 17 evenly applies the paint on the surface onto the test plate 8 to form a paint film of uniform thickness.

[0030] By setting up the coating components, the paint can be evenly applied to the test plate 8, which facilitates the detection of the paint film. At the same time, the two independent coating components can simultaneously coat different paints or parallel samples of the same paint, which is convenient for conducting comparative experiments.

[0031] The paint inlet 2 is funnel-shaped to facilitate the pouring of paint, while the outlet 19 is inverted funnel-shaped to guide and converge the paint. After one batch of paint is poured in, if the same type of paint is poured in again, no cleaning is required. If a different type of paint is poured in, the operator opens the sealing door 4 on the front of the box 1 to wipe the paint roller 17 and uses a long cleaning cloth to wipe the feed channel 6. After wiping, the test is performed again.

[0032] Because of the presence of the damping bearing 15, the paint does not rotate when it flows to the painting roller 17. When the slider 12 moves, the driving force generated by the meshing of the gear 16 and the rack plate 18 must overcome the damping force to drive the rotating rod 14 to rotate.

[0033] Reference Figures 2-4 The box 1 has two fixed feeding channels 6 inside. The top of each feeding channel 6 is connected to a paint inlet 2, and the bottom of each feeding channel 6 is connected to a discharge outlet 19. The two discharge outlets 19 are located above the corresponding paint rollers 17.

[0034] Reference Figures 1-5 One end of the housing 1 is equipped with a control panel 22, which is electrically connected to two motors 3, multiple electric slide rails 9, xenon lamps 11 and a constant temperature and humidity control box 21.

[0035] When the operator sets the weather resistance testing parameters (such as light intensity, temperature, humidity, coating speed, etc.) on the control panel 22, the internal microprocessor converts the instructions into electrical signals and transmits them to the corresponding devices.

[0036] For example, a PWM (Pulse Width Modulation) signal is sent to motor 3 to adjust the speed of motor 3, thereby controlling the rotation speed and angle of the shaft and the disk 5, and realizing the dynamic adjustment of the illumination angle of xenon lamp 11; Displacement commands are issued to the electric slide rail 9 to control the moving speed and stroke of the slider 12, thereby driving the paint roller 17 to complete the automated coating operation on the test plate 8.

[0037] For the xenon lamp 11, the control panel 22 can control the opening and closing of xenon lamps 11 with different power through independent switches according to experimental needs, and combine multiple light intensity levels. The temperature and humidity sensor data inside the constant temperature and humidity control chamber 21 is monitored in real time. When the actual value deviates from the set parameters, an adjustment signal is immediately sent to start the heating, cooling, humidification or dehumidification module to ensure the stability of the environment inside the test chamber 20.

[0038] Working principle: First, the temperature and humidity parameters required for the test are set through the control panel 22. The constant temperature and humidity control box 21 then starts and adjusts the environment inside the test chamber 20 to the set value (temperature ±0.5℃, relative humidity ±3%), providing stable basic conditions for the test.

[0039] At this time, different paints are poured in through the funnel-shaped paint inlet 2, and the paints flow out through the inverted funnel-shaped outlet 19 via the feed channel 6, evenly covering the surface of the paint roller 17. After the sealing door 4 is closed, the control panel 22 sends a command to start the electric slide rail 9. The slider 12 drives the plate 13 and the paint roller 17 to move. At the same time, the gears 16 at both ends of the rotating rod 14 mesh with the rack plate 18, driving the paint roller 17 to rotate and evenly apply the paint to the test plate 8 to form a paint film.

[0040] After the coating is applied, according to the testing requirements, the motor 3 is started via the control panel 22, which drives the rotating shaft and disc 5 to rotate, moving the xenon lamps 11 with different preset irradiation intensities to a suitable position above the test plate 8. The operator then turns on the corresponding xenon lamps 11 via the control panel 22 to conduct an accelerated aging test on the paint film.

[0041] During the test, the constant temperature and humidity control chamber 21 continuously monitors and maintains stable temperature and humidity inside the chamber. The partition 10 divides the test chamber 20 into two independent areas, allowing for simultaneous comparative experiments under two different conditions, thus avoiding mutual interference.

[0042] If the paint needs to be changed for the next round of testing, the operator opens the sealed door 4 and manually wipes and cleans the paint roller 17 and the feed channel 6 to ensure no paint residue remains and to avoid cross-contamination between different paints. After cleaning, the above process can be repeated for a new round of paint application and weather resistance testing.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An accelerated testing device for the weather resistance of paint films with a constant temperature and humidity control chamber, characterized in that, include: The box (1) has a connecting plate (7) fixedly connected inside it, and the top of the connecting plate (7) is provided with a test cavity (20). The test chamber (20) has two rotating shafts inside, and the bottom of each of the two rotating shafts is connected to a disc (5) by bolts. Each disc (5) has multiple xenon lamps (11) at its bottom. The top of the housing (1) has two motors (3), and the output ends of the two motors (3) are fixedly connected to the corresponding rotating shafts. The box (1) is equipped with a constant temperature and humidity control box (21), which is located below the connecting plate (7).

2. The accelerated testing equipment for the weather resistance of coating films with a constant temperature and humidity control chamber according to claim 1, characterized in that: The front side of the box (1) is provided with two sealed doors (4), and the inside of the test chamber is fixedly connected with a partition (10). The bottom end of the partition (10) is fixedly connected to the connecting plate (7). Two test plates (8) are provided above the connecting plate (7), and each test plate (8) is provided with a coating component.

3. The accelerated testing equipment for the weather resistance of coating films with a constant temperature and humidity control chamber according to claim 2, characterized in that: The coating assembly is provided in two sets. Each set of the coating assembly includes two electric slide rails (9). The two electric slide rails (9) are fixedly connected to the connecting plate (7). The top of each of the two electric slide rails (9) is slidably connected to a slider (12). The top of each of the two sliders (12) is fixedly connected to a plate (13). The inner side of each of the two plates (13) is provided with a paint roller (17).

4. The accelerated testing equipment for the weather resistance of coating films with a constant temperature and humidity control chamber according to claim 3, characterized in that: Each of the painting rollers (17) is located above the corresponding test plate (8), and each of the painting rollers (17) has a rotating rod (14) fixedly connected inside.

5. The accelerated testing equipment for the weather resistance of coating films with a constant temperature and humidity control chamber according to claim 4, characterized in that: Each of the rotating rods (14) is fixedly connected to a gear (16) at both ends, and each of the rotating rods (14) is rotatably connected to the corresponding plate (13) through a damping bearing (15).

6. The accelerated testing equipment for the weather resistance of coating films with a constant temperature and humidity control chamber according to claim 5, characterized in that: The top of the connecting plate (7) is provided with two sets of rack plates (18), and the number of rack plates (18) in each set is set to two. Each gear (16) meshes with the corresponding rack plate (18).

7. The accelerated testing equipment for the weather resistance of coating films with a constant temperature and humidity control chamber according to claim 3, characterized in that: The box (1) has two feeding channels (6) fixedly connected inside. The top of each feeding channel (6) is connected to a paint inlet (2), and the bottom of each feeding channel (6) is connected to a discharge outlet (19). The two discharge outlets (19) are located above the corresponding paint rollers (17).

8. The accelerated testing equipment for the weather resistance of coating films with a constant temperature and humidity control chamber according to claim 3, characterized in that: One end of the housing (1) is provided with a control panel (22), which is electrically connected to two motors (3), multiple electric slide rails (9), xenon lamps (11) and a constant temperature and humidity control box (21).

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