A fastness test box in a film-coated constant temperature and humidity environment

Abstract

The utility model relates to the technical field of coating test box, concretely is a kind of fastness test box under constant temperature and humidity environment of coating, including test box, the top of test box is provided with the cover shell being communicated with the inside of test box, cover shell is equipped with the pump air pipe for blowing gas to the inside of cover shell, the inside of cover shell is provided with electric heating tube, the lower portion of electric heating tube is provided with multiple louver that can rotate clockwise anticlockwise reciprocating, air pump is provided on test box, pump air pipe one end is installed in the air outlet of air pump, air pump includes the main shaft being connected with impeller of output end setting, louver is set on the rotating rod rotatingly arranged in the inside of cover shell, the main shaft is cooperated with the linkage structure between rotating rod, the utility model changes the air supply direction of entering test box by setting reciprocating louver, cooperates heating and humidifying structure to make the temperature and humidity distribution of different positions in test box more uniform, make the same batch sample test result more accurate, improve detection data reliability.

Description

Technical Field

[0001] This utility model relates to the technical field of coating test chambers, specifically a coating fastness test chamber under constant temperature and humidity conditions. Background Technology

[0002] In the fields of materials science, surface engineering, and industrial product development, durability testing of coatings (such as PVD, CVD, spraying, and electroplating) is a crucial step in evaluating product quality and lifespan. The adhesion, abrasion resistance, corrosion resistance, and color stability of the coating layer under complex environments are collectively referred to as "fastness," which directly affects the reliability and market competitiveness of the final product. To simulate the harsh environments that coatings may encounter in actual use, such as high temperature, high humidity, and temperature cycling, accelerated aging and reliability verification are performed using a constant temperature and humidity test chamber.

[0003] Currently, while conventional temperature and humidity test chambers on the market can provide certain temperature and humidity control functions, they have the following significant drawbacks in testing coated samples: the coating is extremely sensitive to small temperature and humidity fluctuations. If directional humidification and fixed-point heating are used, the temperature and humidity distribution in different locations inside the chamber will be uneven, which will lead to discrete test results for samples in the same batch and affect the reliability of the data. To address this, we provide a coating fastness test chamber under constant temperature and humidity to solve the above-mentioned problems. Summary of the Invention

[0004] The purpose of this invention is to provide a coating adhesion test chamber under constant temperature and humidity conditions to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A coating fastness test chamber under constant temperature and humidity environment includes a test chamber body, a cover connected to the inside of the test chamber body is provided on the top of the test chamber body, an air pump pipe for blowing air into the cover is installed on the cover, an electric heating tube is provided inside the cover, and a plurality of louvers that can rotate clockwise and counterclockwise are provided below the electric heating tube.

[0007] The test chamber is equipped with an air pump. One end of the air pump pipe is installed at the air outlet of the air pump. The air pump includes a main shaft connected to an impeller at the output end. The louvers are mounted on a rotating rod that is rotatably mounted inside the cover. The main shaft and the rotating rod are connected by a linkage structure. When the main shaft rotates, it drives the rotating rod to rotate clockwise and counterclockwise back and forth.

[0008] A coating adhesion test chamber under constant temperature and humidity conditions as described above: the linkage structure includes a secondary shaft rotatably mounted on the test chamber body. The secondary shaft is driven by a gear mechanism to drive the main shaft. When the main shaft rotates, it drives the secondary shaft to rotate. The secondary shaft is driven by a swing mechanism to drive one of the rotating rods. When the secondary shaft rotates, it drives one of the rotating rods to rotate clockwise and counterclockwise. Multiple rotating rods are driven by a sprocket and chain mechanism. When one rotating rod rotates, it drives multiple rotating rods to rotate synchronously.

[0009] A coating fastness test chamber under constant temperature and humidity environment as described above: the gear mechanism includes a first gear disposed on the main shaft and a second gear disposed on the secondary shaft, wherein the first gear meshes with the second gear.

[0010] As described above, a coating adhesion test chamber under constant temperature and humidity conditions: the swing mechanism includes a turntable mounted on a secondary shaft and a swing arm hinged to one of the rotating rods. The turntable is provided with a protruding rod, and the swing arm is provided with a slot. The protruding rod is movably engaged in the slot.

[0011] As described above, a coating fastness test chamber under constant temperature and humidity conditions: the sprocket and chain mechanism includes sprockets respectively mounted on multiple rotating rods, and the multiple sprockets are driven by a chain.

[0012] A coating fastness test chamber under constant temperature and humidity environment as described above: The test chamber is provided with a first pipe for atomizing and spraying clean water into the test chamber, a second pipe for atomizing and spraying salt spray, and a third pipe for conveying SO2 corrosive gas. One end of the first pipe, the second pipe, and the third pipe extends into the test chamber and is provided with an atomizing nozzle at the end. Valves are installed on the first pipe, the second pipe, and the third pipe respectively.

[0013] As described above, a coating fastness test chamber under constant temperature and humidity conditions has an inspection door installed on the front of the test chamber via a hinge, and the inspection door is provided with a viewing window.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: During use, the coating is placed inside the test chamber. An electric heating tube installed inside the casing can be used to heat the inner cavity of the casing. Simultaneously, starting the air pump, in conjunction with the air pump pipe, blows the heated air inside the casing into the test chamber. Because multiple louvers are installed inside the casing, the main shaft rotates when the air pump is started. Simultaneously, the rotation of the main shaft drives the louvers on the rotating rod to rotate clockwise and counterclockwise, thereby continuously changing the direction of the hot air entering the test chamber through the reciprocating oscillation of the louvers. This makes the hot air distribution inside the test chamber more uniform, resulting in a more even temperature distribution at different locations inside the test chamber. Furthermore, when humidifying the test chamber by atomizing and spraying clean water into it through the first pipe, the reciprocating oscillation of the louvers, in conjunction with the air pump pipe, makes the water mist inside the test chamber more evenly distributed, thus making the humidity distribution at different locations inside the test chamber more uniform.

[0015] Therefore, this utility model changes the direction of the airflow entering the test chamber by setting reciprocating louvers, and in conjunction with the heating and humidification structure, makes the temperature and humidity distribution in different positions in the test chamber more uniform, making the test results of the same batch of samples more accurate and improving the reliability of the test data. Attached Figure Description

[0016] Figure 1 This is a first-view schematic diagram of the overall structure of a coating fastness test chamber under constant temperature and humidity conditions.

[0017] Figure 2 This is a schematic diagram of the overall structure of a coating fastness test chamber under constant temperature and humidity conditions from a second perspective.

[0018] Figure 3 This is a schematic diagram of the internal structure of a test chamber for a coating fastness test under constant temperature and humidity conditions.

[0019] Figure 4 For a coating fastness test chamber under constant temperature and humidity environment Figure 1 A schematic diagram of the decomposed local structure.

[0020] Figure 5 For a coating fastness test chamber under constant temperature and humidity environment Figure 4 A schematic diagram of the decomposed local structure.

[0021] Figure 6 For a coating fastness test chamber under constant temperature and humidity environment Figure 5 A schematic diagram of the decomposed local structure.

[0022] Figure 7 For a coating fastness test chamber under constant temperature and humidity environment Figure 6 A schematic diagram of the decomposed local structure.

[0023] In the diagram: 1. Test chamber; 2. Cover; 3. Pump pipe; 4. Air pump; 5. Electric heating element; 6. Louver; 7. Rotating rod; 8. Sprocket; 9. Chain; 10. Countershaft; 11. Turntable; 12. Swing arm; 13. Protruding rod; 14. Slot; 15. Main shaft; 16. First gear; 17. Second gear; 18. Second tube; 19. Third tube; 20. Atomizing nozzle; 21. Inspection door; 22. Viewing window; 23. First tube. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Please see Figures 1 to 7 As an embodiment of this utility model, a coating fastness test chamber under constant temperature and humidity environment includes a test chamber body 1, a cover 2 that communicates with the inside of the test chamber body 1 is provided on the top of the test chamber body 1, a pump pipe 3 for blowing air into the cover 2 is installed on the cover 2, an electric heating tube 5 is provided inside the cover 2, and a plurality of louvers 6 that can rotate clockwise and counterclockwise are provided below the electric heating tube 5.

[0026] The test chamber 1 is equipped with an air pump 4. One end of the air pump pipe 3 is installed at the air outlet of the air pump 4. The air pump 4 includes a main shaft 15 connected to the impeller at the output end. The louvers 6 are mounted on a rotating rod 7 that is rotatably mounted inside the cover 2. The main shaft 15 and the rotating rod 7 are connected by a linkage structure. When the main shaft 15 rotates, it will drive the rotating rod 7 to rotate clockwise and counterclockwise back and forth.

[0027] The test chamber 1 is equipped with a first pipe 23 for atomizing and spraying clean water into the test chamber 1, a second pipe 18 for atomizing and spraying salt mist, and a third pipe 19 for conveying SO2 corrosive gas. One end of the first pipe 23, the second pipe 18, and the third pipe 19 extends into the test chamber 1 and is equipped with an atomizing nozzle 20 at the end. Valves are installed on the first pipe 23, the second pipe 18, and the third pipe 19 respectively.

[0028] In this embodiment, during use, the coating is placed inside the test chamber 1. An electric heating tube 5 installed inside the casing 2 heats the air inside the casing 2. The air pump 4 and the electric heating tube 5 are electrically connected to an external power source via wires. Simultaneously, starting the air pump 4, in conjunction with the air pump pipe 3, blows the heated air inside the casing 2 into the test chamber 1. Since multiple louvers 6 are installed inside the casing 2, when the air pump 4 is started, the main shaft 15 connected to the impeller rotates. Simultaneously, the rotation of the main shaft 15 drives the louvers 6 on the rotating rod 7 to rotate clockwise and counterclockwise, thereby continuously changing the direction of the hot air entering the test chamber 1 through the reciprocating oscillation of the louvers 6. This allows the hot air to be blown to various locations within the test chamber 1, while simultaneously accelerating the gas flow inside the test chamber 1, making the distribution of the hot air inside the test chamber 1 more uniform, resulting in a more uniform temperature distribution at different locations within the test chamber 1. Additionally, the test chamber 1 is humidified by atomizing and spraying clean water into it through the first pipe 23. By utilizing the reciprocating oscillation of the louvers 6 in conjunction with the air pump pipe 3 to blow air into the test chamber 1, the water mist entering the test chamber 1 can be distributed more evenly inside the test chamber 1, thus making the humidity distribution in different locations inside the test chamber 1 more uniform. At the same time, when the salt spray is atomized and sprayed into the test chamber 1 through the second pipe 18, the reciprocating oscillation of the louvers 6 in conjunction with the air pump pipe 3 can make the salt spray entering the test chamber 1 more uniformly distributed inside the test chamber 1. Simultaneously, when SO2 corrosive gas is delivered into the test chamber 1 through the third pipe 19, the reciprocating oscillation of the louvers 6 in conjunction with the air pump pipe 3 can make the SO2 corrosive gas entering the test chamber 1 more uniformly distributed inside the test chamber 1. Therefore, during wear and corrosion resistance tests, the distribution of salt spray and SO2 corrosive gas in different locations inside the test chamber 1 is more uniform, which is beneficial to making the test results of the same batch of samples more accurate and improving the reliability of the test data.

[0029] As a further embodiment of this utility model, the linkage structure includes a secondary shaft 10 rotatably mounted on the test chamber 1. The secondary shaft 10 and the main shaft 15 are driven by a gear mechanism. When the main shaft 15 rotates, it drives the secondary shaft 10 to rotate. The secondary shaft 10 and one of the rotating rods 7 are driven by a swing mechanism. When the secondary shaft 10 rotates, it drives one of the rotating rods 7 to rotate clockwise and counterclockwise. The multiple rotating rods 7 are driven by a sprocket and chain mechanism. When one rotating rod 7 rotates, it drives multiple rotating rods 7 to rotate synchronously.

[0030] In this embodiment, when the air pump 4 is started, the main shaft 15 connected to the impeller will rotate. The main shaft 15 is driven to rotate by the gear mechanism between the auxiliary shaft 10 and the main shaft 15. The rotation of the main shaft 15 will drive the auxiliary shaft 10 to rotate. The auxiliary shaft 10 is driven to rotate by the swing mechanism between one of the rotating rods 7. The rotation of the auxiliary shaft 10 will drive one of the rotating rods 7 to rotate clockwise and counterclockwise. The multiple rotating rods 7 are driven to rotate by the sprocket and chain mechanism. The rotation of one rotating rod 7 will drive multiple rotating rods 7 to rotate synchronously, thereby driving multiple louvers 6 to rotate synchronously clockwise and counterclockwise.

[0031] As a further embodiment of this utility model, the gear mechanism includes a first gear 16 disposed on the main shaft 15 and a second gear 17 disposed on the secondary shaft 10, wherein the first gear 16 meshes with the second gear 17.

[0032] In this embodiment, when the main shaft 15 rotates, it drives the first gear 16 to rotate. The first gear 16 meshes with the second gear 17, and when the first gear 16 rotates, it drives the second gear 17 to rotate, thereby driving the secondary shaft 10 to rotate.

[0033] As a further embodiment of this utility model, the swing mechanism includes a turntable 11 mounted on a secondary shaft 10 and a swing arm 12 hinged to one of the rotating rods 7. The turntable 11 is provided with a protruding rod 13, and the swing arm 12 is provided with a slot 14, in which the protruding rod 13 is movably engaged in the slot 14.

[0034] In this embodiment, when the secondary shaft 10 rotates, it will drive the turntable 11 to rotate. When the turntable 11 rotates, it will drive the protruding rod 13 to rotate. The protruding rod 13 is movably engaged in the slot 14, which can drive the swing arm 12 to swing back and forth, thereby driving a rotating rod 7 to rotate clockwise and counterclockwise.

[0035] As a further embodiment of this utility model, the sprocket and chain mechanism includes sprockets 8 respectively disposed on multiple rotating rods 7, and the multiple sprockets 8 are driven by a chain 9.

[0036] In this embodiment, the clockwise and counterclockwise reciprocating rotation of a rotating rod 7 will drive the sprocket 8 on the rotating rod 7 to rotate clockwise and counterclockwise. By utilizing the transmission between multiple sprockets 8 through the cooperation of the chain 9, multiple sprockets 8 are driven to rotate clockwise and counterclockwise, thereby driving multiple rotating rods 7 to rotate clockwise and counterclockwise.

[0037] As a further embodiment of this utility model, the front of the test chamber 1 is hinged to a maintenance door 21, and a viewing window 22 is provided on the maintenance door 21.

[0038] In this embodiment, the viewing window 22 is made of transparent glass or transparent plastic. Through the viewing window 22, it is convenient to monitor the changes in the surface state of the sample inside the test chamber 1 in real time during the test, such as blistering, peeling, discoloration, etc., without interrupting the test and taking it out for observation, thus disrupting the continuity of the test.

[0039] In use, the coating sample to be tested is placed inside the test chamber 1. An electric heating tube 5 installed inside the housing 2 heats the air inside the housing 2. Then, starting the air pump 4, along with the air pipe 3, blows the heated air from inside the housing 2 into the test chamber 1. Since multiple louvers 6 are installed inside the housing 2, the main shaft 15 connected to the impeller rotates when the air pump 4 is started. Simultaneously, the rotation of the main shaft 15 drives the louvers 6 on the rotating rod 7 to rotate clockwise and counterclockwise, thus utilizing the reciprocating oscillation of the louvers 6 to continuously generate heat. By changing the direction of the hot air entering the test chamber 1, the hot air can be blown to various positions inside the test chamber 1. Simultaneously, the gas flow inside the test chamber 1 is accelerated, resulting in a more uniform distribution of the hot air within the test chamber 1 and a more even temperature distribution at different locations. Furthermore, when humidifying the test chamber 1 by atomizing and spraying clean water through the first pipe 23, the reciprocating oscillation of the louvers 6, combined with the air blowing from the pump pipe 3, allows the water mist entering the test chamber 1 to be... The more uniform distribution inside test chamber 1 results in a more even distribution of humidity at different locations within the chamber. In summary, this allows for a more uniform temperature and humidity distribution at different locations within test chamber 1 when samples are tested under constant temperature and humidity conditions, improving test accuracy. Simultaneously, when salt spray is atomized and sprayed into test chamber 1 through the second pipe 18, the reciprocating oscillation of the louvers 6, combined with the air blowing through the pump pipe 3, ensures a more uniform distribution of the salt spray within test chamber 1. Similarly, when SO2 corrosive gas is delivered into test chamber 1 through the third pipe 19, the reciprocating oscillation of the louvers 6, combined with the air blowing through the pump pipe 3, further ensures a more uniform distribution of SO2 corrosive gas within test chamber 1. Therefore, during wear and corrosion resistance tests, the more uniform distribution of salt spray and SO2 corrosive gas at different locations within test chamber 1 contributes to more accurate test results for the same batch of samples, improving the reliability of the test data.

[0040] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, any technical solutions that can be implemented in other specific forms are included in this utility model.

Claims

1. A coating adhesion test chamber under constant temperature and humidity conditions, comprising a test chamber body (1), characterized in that, The test chamber (1) is provided with a cover (2) at the top that communicates with the interior of the test chamber (1). The cover (2) is equipped with a pump pipe (3) for blowing air into the cover (2). The cover (2) is provided with an electric heating tube (5). Below the electric heating tube (5) are multiple louvers (6) that can rotate clockwise and counterclockwise. An air pump (4) is installed on the test chamber (1). One end of the air pump pipe (3) is installed at the air outlet of the air pump (4). The air pump (4) includes a main shaft (15) connected to the impeller at the output end. The louvers (6) are mounted on a rotating rod (7) that is rotatably mounted inside the cover (2). The main shaft (15) and the rotating rod (7) are connected by a linkage structure. When the main shaft (15) rotates, it will drive the rotating rod (7) to rotate clockwise and counterclockwise.

2. The coating adhesion test chamber under constant temperature and humidity environment according to claim 1, characterized in that, The linkage structure includes a secondary shaft (10) rotatably mounted on the test chamber (1). The secondary shaft (10) and the main shaft (15) are driven by a gear mechanism. When the main shaft (15) rotates, it drives the secondary shaft (10) to rotate. The secondary shaft (10) and one of the rotating rods (7) are driven by a swing mechanism. When the secondary shaft (10) rotates, it drives one of the rotating rods (7) to rotate clockwise and counterclockwise. The multiple rotating rods (7) are driven by a sprocket and chain mechanism. When one rotating rod (7) rotates, it drives multiple rotating rods (7) to rotate synchronously.

3. The coating adhesion test chamber under constant temperature and humidity environment according to claim 2, characterized in that, The gear mechanism includes a first gear (16) disposed on the main shaft (15) and a second gear (17) disposed on the secondary shaft (10), wherein the first gear (16) meshes with the second gear (17).

4. The coating adhesion test chamber under constant temperature and humidity environment according to claim 2, characterized in that, The swing mechanism includes a turntable (11) mounted on a secondary shaft (10) and a swing arm (12) hinged to one of the rotating rods (7). The turntable (11) is provided with a protruding rod (13), and the swing arm (12) is provided with a slot (14). The protruding rod (13) is movably engaged in the slot (14).

5. The coating adhesion test chamber under constant temperature and humidity environment according to claim 2, characterized in that, The sprocket and chain mechanism includes sprockets (8) respectively mounted on multiple rotating rods (7), and the multiple sprockets (8) are driven by a chain (9).

6. The coating adhesion test chamber under constant temperature and humidity environment according to claim 1, characterized in that, The test chamber (1) is provided with a first pipe (23) for atomizing and spraying clean water into the test chamber (1), a second pipe (18) for atomizing and spraying salt mist, and a third pipe (19) for conveying SO2 corrosive gas. One end of the first pipe (23), the second pipe (18), and the third pipe (19) extends into the test chamber (1) and is provided with an atomizing nozzle (20) at the end. Valves are installed on the first pipe (23), the second pipe (18), and the third pipe (19).

7. The coating adhesion test chamber under constant temperature and humidity environment according to claim 1, characterized in that, The front of the test chamber (1) is fitted with an inspection door (21) by a hinge, and the inspection door (21) is provided with a viewing window (22).

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