A testing machine for the initial drying crack resistance of water-based coatings

Abstract

This utility model relates to the field of coating testing technology, and provides a water-based coating initial drying crack resistance testing machine, which includes a test chamber. A control panel is provided on the side of the test chamber, a bottom support pad is fixedly connected to the bottom of the test chamber, a rapid drying device is provided on the inner side of the test chamber, and a vibration coating testing device is provided on the inner side of the test chamber. This utility model also includes the vibration coating testing device, which includes a pull-back spring. One end of the pull-back spring is fixedly connected to the inner side of the test chamber, and the end of the pull-back spring away from the test chamber is fixedly connected to a coating tray. Through the above technical solution, the technical problems of inaccurate testing and inability to perform efficient and rapid testing in existing water-based coating testing machines are solved.

Description

Technical Field

[0001] This utility model relates to the field of coating testing technology, specifically to a testing machine for the initial drying crack resistance of water-based coatings. Background Technology

[0002] In the coatings industry, performance evaluation of waterborne coatings is crucial, especially their initial drying crack resistance. Traditional testing methods often suffer from long testing cycles and inaccurate results, failing to meet the modern coatings industry's demand for efficient and precise testing.

[0003] According to a published specification (Publication No.: CN210514037U), a water-based coating initial drying crack resistance testing machine includes a protective shell and a support plate. A mixing tank is fixedly installed on the top of the protective shell, and a stirring motor is mounted on the top of the mixing tank. A stirring paddle is rotatably mounted on the bottom of the stirring motor. A control chamber is located on one side inside the protective shell, and a temperature controller is installed inside the control chamber. A frequency converter is fixedly installed on one side of the temperature controller. This utility model, with its heating tube and fan working together, can perform drying crack resistance testing on paint samples, improving the device's practicality. The temperature controller allows for adjustment and control of the heating temperature, further enhancing its usability and reducing limitations. The frequency converter allows for adjustment of the stirring motor's speed, facilitating adjustments based on the paint's properties, making the device easier to use, expanding its application range, and promoting its widespread adoption.

[0004] In the aforementioned application, the drying process of the sample using a heating element and a fan improves testing efficiency to some extent, but it still has some shortcomings. For example, the combination of the heating element and the fan may not dry the coating evenly and quickly, leading to errors in the test results. Therefore, we propose a water-based coating initial drying crack resistance testing machine. Utility Model Content

[0005] To overcome the above-mentioned defects, this utility model provides a water-based coating initial drying crack resistance tester, which solves the technical problems of inaccurate testing and inability to conduct efficient and rapid testing in existing water-based coating testers.

[0006] According to one aspect, at least one embodiment of the present invention provides a water-based coating initial drying crack resistance testing machine, comprising: a test chamber, a control panel provided on the side of the test chamber, a bottom support pad fixedly connected to the bottom of the test chamber, a rapid air drying device provided on the inner side of the test chamber, and a vibration coating testing device provided on the inner side of the test chamber.

[0007] The rapid drying device includes a mounting base, which is fixedly connected to the bottom inner side of the test chamber. A motor is fixedly connected to the top of the mounting base, and a drive gear is fixedly connected to the output shaft of the motor. A connecting plate is fixedly connected to the inner wall of the test chamber, and a rotating sleeve is fixedly connected through and to the side of the connecting plate. A rotating shaft is rotatably connected to the inner wall of the rotating sleeve. A fan blade is fixedly connected to one end of the rotating shaft, and a driven gear is fixedly connected to the end of the rotating shaft away from the fan blade. An air suction plate is fixedly connected to the side of the test chamber.

[0008] For example, in at least one embodiment of this utility model, a water-based coating initial drying crack resistance testing machine further includes: a filter disc, which is slidably connected to the side of the test chamber, and a lubrication funnel is fixedly connected to the top of the test chamber. Its function is to lubricate the driven gear and fan blades, preventing wear caused by prolonged rotation and improving the service life of the equipment. The filter disc filters the air inside the test chamber, preventing dust and other impurities from affecting the test results.

[0009] The driving gear and the driven gear mesh with each other. The driving gear has more teeth than the driven gear. Its function is to increase the number of teeth of the driving gear so that the speed of the driving gear is lower than that of the driven gear, thereby increasing the speed of the fan blades, making the airflow more stable, avoiding the problem of uneven drying of the paint due to excessive wind speed, and further improving the accuracy of the test.

[0010] The lubrication funnel is located directly above the driven gear. Several circular holes are provided on the side of the suction plate to facilitate the extraction of air from inside the test chamber, creating an airflow that accelerates the drying process of the coating. Simultaneously, the lubricating oil dripping from the lubrication funnel is evenly applied to the tooth surfaces of the driven and driving gears, as well as the rotating parts of the fan blades, effectively reducing friction between components and extending the service life of the equipment.

[0011] The number of connecting plates is set to several and symmetrically distributed along the vertical central axis of the test chamber. The side of the filter plate has several round holes, which facilitate air circulation and ensure filtration effect. The air entering the test chamber is filtered by the filter plate to remove dust and other impurities, thus ensuring the accuracy of the test.

[0012] According to another aspect, at least one embodiment of this utility model also provides a water-based coating initial drying crack resistance testing machine, comprising: a vibrating coating testing device, the vibrating coating testing device including a pull-back spring, one end of the pull-back spring being fixedly connected to the inner side of the test chamber, the end of the pull-back spring away from the test chamber being fixedly connected to a coating tray, a fixing plate being fixedly connected to the side of the coating tray, a connecting column being fixedly connected to the side of the fixing plate, a rack being fixedly connected to the end of the connecting column away from the fixing plate, a sliding plate being fixedly connected to the top of the rack, a return spring being fixedly connected to the side of the sliding plate, a drive shaft being fixedly connected to the side of the driven gear, and a half gear being fixedly connected to the end of the drive shaft away from the driven gear. Its function is to achieve reciprocating vibration, simulating the stress situation of the coating during the drying process, which helps to detect the crack resistance of the coating. Furthermore, this design structure is simple, easy to implement, and can effectively perform vibration testing on the coating, improving the accuracy and efficiency of the test.

[0013] For example, in at least one embodiment of this utility model, a water-based coating initial drying crack resistance testing machine further includes: a reinforcing plate, which is fixedly connected to the bottom inner side of the test chamber, and a limiting plate is fixedly connected to the inner wall of the test chamber. Its function is to enhance the structural strength of the test chamber and ensure the stability of each component during operation. The reinforcing plate effectively prevents vibration generated by the drive shaft during high-speed rotation from damaging the bottom of the test chamber, thus improving the overall stability of the equipment.

[0014] The side of the reinforcing plate is rotatably connected to the circumferential surface of the drive shaft, and the top of the limiting plate is slidably connected to the top of the sliding plate. Its function is to ensure the stability of the drive shaft during rotation, while the sliding plate can slide smoothly along the top of the limiting plate, further ensuring the stability and reliability of the vibration coating testing device during operation.

[0015] The half gear meshes with the rack, and the end of the return spring away from the sliding plate is fixedly connected to the inner side of the test box. Its function is to make the paint tray reciprocate under the rotation of the half gear, simulating the force situation of the paint during the drying process.

[0016] The number of pull-back springs is set to several and symmetrically distributed along the vertical central axis of the test box. The number of paint trays is set to two and symmetrically distributed along the vertical central axis of the test box. Their function is to ensure the balance and stability of the vibration paint testing device during operation and avoid test errors caused by uneven force.

[0017] The beneficial effects of the embodiments of this utility model are as follows:

[0018] 1. This utility model achieves rapid drying of the coating inside the test chamber through the coordinated operation of components such as the mounting base, motor, and drive gear in the rapid drying device. This reduces the drying time and improves testing efficiency. Simultaneously, by adjusting the tooth ratio of the drive gear to the driven gear, the fan blade speed is effectively controlled, resulting in a more stable airflow and preventing uneven drying of the coating due to excessive wind speed, further improving testing accuracy. Furthermore, the lubrication funnel and filter disc not only lubricate the driven gear and fan blades, reducing friction between components and extending the equipment's lifespan, but also filter the air inside the test chamber, preventing dust and other impurities from affecting the test results and ensuring the accuracy and reliability of the test.

[0019] 2. In this invention, the reciprocating vibration of the coating disc is achieved through the cooperation of components such as the pull-back spring, coating disc, and fixing plate in the vibration coating testing device. This simulates the stress situation of the coating during the drying process, thereby accurately detecting the crack resistance of the coating. This design is not only simple in structure and easy to implement, but also effectively improves the accuracy and efficiency of the test. Simultaneously, the addition of reinforcing plates and limiting plates enhances the structural strength of the test chamber, ensuring the stability of each component during operation and further improving the overall stability and reliability of the equipment. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a three-dimensional side view structural schematic diagram of the present invention;

[0023] Figure 3 This is a three-dimensional cross-sectional structural schematic diagram of the rapid air-drying device of this utility model;

[0024] Figure 4 This is a three-dimensional cross-sectional structural schematic diagram of the vibration coating testing device of this utility model;

[0025] Figure 5 This is a three-dimensional cross-sectional structural diagram of the present invention.

[0026] In the diagram: 1. Test box; 2. Control panel; 3. Bottom support pad; 4. Rapid drying device; 401. Mounting base; 402. Motor; 403. Drive gear; 404. Connecting plate; 405. Rotating sleeve; 406. Rotating shaft; 407. Fan blade; 408. Driven gear; 409. Suction plate; 5. Vibration coating test device; 501. Pull-back spring; 502. Coating tray; 503. Fixing plate; 504. Connecting column; 505. Rack; 506. Sliding plate; 507. Return spring; 508. Drive shaft; 509. Half gear; 6. Filter tray; 7. Lubrication funnel; 8. Reinforcing plate; 9. Limiting plate. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0028] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0029] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] like Figures 1-5 As shown, it illustrates a water-based coating initial drying crack resistance testing machine according to an embodiment of the present invention, including a test chamber 1, a control panel 2 provided on the side of the test chamber 1, a bottom support pad 3 fixedly connected to the bottom of the test chamber 1, a rapid air drying device 4 provided on the inner side of the test chamber 1, and a vibration coating testing device 5 provided on the inner side of the test chamber 1.

[0034] The rapid drying device 4 includes a mounting base 401, which is fixedly connected to the bottom inner side of the test chamber 1. A motor 402 is fixedly connected to the top of the mounting base 401. A drive gear 403 is fixedly connected to the output shaft of the motor 402. A connecting plate 404 is fixedly connected to the inner wall of the test chamber 1. A rotating sleeve 405 is fixedly connected through the side of the connecting plate 404. A rotating shaft 406 is rotatably connected to the inner wall of the rotating sleeve 405. A fan blade 407 is fixedly connected to one end of the rotating shaft 406. A driven gear 408 is fixedly connected to the end of the rotating shaft 406 away from the fan blade 407. A suction plate 409 is fixedly connected to the side of the test chamber 1.

[0035] In some examples, a filter disc 6 is slidably connected through the side of the test chamber 1, and a lubrication funnel 7 is fixedly connected through the top of the test chamber 1. Its function is to lubricate the driven gear 408 and the fan blade 407, preventing wear caused by prolonged rotation and extending the service life of the equipment. The filter disc 6 filters the air inside the test chamber 1, preventing dust and other impurities from affecting the test results.

[0036] The driving gear 403 and the driven gear 408 mesh with each other. The driving gear 403 has more teeth than the driven gear 408. Its function is to increase the number of teeth of the driving gear 403 so that the speed of the driving gear 403 is lower than that of the driven gear 408, thereby increasing the speed of the fan blade 407, making the airflow more stable, avoiding the problem of uneven paint drying caused by excessive wind speed, and further improving the accuracy of the test.

[0037] The lubrication funnel 7 is located directly above the driven gear 408. Several round holes are provided on the side of the suction plate 409, which facilitates the suction plate 409 to draw air out of the test chamber 1, creating an airflow and accelerating the drying process of the coating. Simultaneously, the lubricating oil dripping from the lubrication funnel 7 can be evenly applied to the tooth surfaces of the driven gear 408 and the driving gear 403, as well as the rotating parts of the fan blade 407, effectively reducing friction between components and extending the service life of the equipment.

[0038] The number of connecting plates 404 is set to several, and they are symmetrically distributed along the vertical central axis of the test chamber 1. The side of the filter plate 6 has several round holes, which facilitate air circulation and ensure the filtration effect. The air entering the test chamber 1 is filtered by the filter plate 6 to remove dust and other impurities, thus ensuring the accuracy of the test.

[0039] For example, such as Figures 1-5 As shown, the principle of the above description is as follows: When motor 402 starts, its output shaft drives the drive gear 403 to rotate. Since the drive gear 403 meshes with the driven gear 408, and the drive gear 403 has more teeth than the driven gear 408, the driven gear 408 rotates at a higher speed than the drive gear 403. The rotation of the driven gear 408 then drives the rotating shaft 406 and the fan blade 407 to rotate, generating airflow. The suction plate 409 draws air out of the test chamber 1 through its side holes, creating negative pressure, accelerating the formation and circulation of airflow, thereby accelerating the drying process of the coating. At the same time, the lubricating oil in the lubrication funnel 7 drips onto the rotating parts of the driven gear 408, drive gear 403, and fan blade 407, providing lubrication, reducing friction and wear between components, and extending the service life of the equipment. The filter plate 6 filters the air entering the test chamber 1, removing dust and other impurities, thereby ensuring the accuracy of the test and the drying quality of the coating.

[0040] like Figures 1-5As shown, this invention illustrates a water-based coating initial drying crack resistance testing machine according to another embodiment of the present invention. The vibrating coating testing device 5 includes a pull-back spring 501, one end of which is fixedly connected to the inner side of the test chamber 1. A coating tray 502 is fixedly connected to the end of the pull-back spring 501 away from the test chamber 1. A fixing plate 503 is fixedly connected to the side of the coating tray 502. A connecting column 504 is fixedly connected to the side of the fixing plate 503. A rack 505 is fixedly connected to the end of the connecting column 504 away from the fixing plate 503. A sliding plate 506 is fixedly connected to the top of the rack 505. A return spring 507 is fixedly connected to the side of the sliding plate 506. A drive shaft 508 is fixedly connected to the side of the driven gear 408. A half gear 509 is fixedly connected to the end of the drive shaft 508 away from the driven gear 408. Its function is to realize reciprocating vibration, simulating the stress situation of the coating during the drying process, which helps to detect the crack resistance of the coating. In addition, this design is simple in structure, easy to implement, and can effectively conduct vibration tests on coatings, improving the accuracy and efficiency of the tests.

[0041] In some examples, a reinforcing plate 8 is fixedly connected to the inner bottom of the test chamber 1, and a limiting plate 9 is fixedly connected to the inner wall of the test chamber 1. Their function is to enhance the structural strength of the test chamber 1 and ensure the stability of each component during operation. The reinforcing plate 8 effectively prevents the vibration generated by the drive shaft 508 during high-speed rotation from damaging the bottom of the test chamber 1, thus improving the overall stability of the equipment.

[0042] The side of the reinforcing plate 8 is rotatably connected to the circumferential surface of the drive shaft 508, and the top of the limiting plate 9 is slidably connected to the top of the sliding plate 506. Its function is to ensure the stability of the drive shaft 508 during rotation. At the same time, the sliding plate 506 can slide smoothly along the top of the limiting plate 9, further ensuring the stability and reliability of the vibration coating test device 5 during operation.

[0043] The half gear 509 meshes with the rack 505, and the end of the return spring 507 away from the sliding plate 506 is fixedly connected to the inner side of the test box 1. Its function is to make the paint disk 502 reciprocate under the rotation of the half gear 509, simulating the force situation of the paint during the drying process.

[0044] The number of pull-back springs 501 is set to several and symmetrically distributed along the vertical central axis of the test box 1. The number of paint pans 502 is set to two and symmetrically distributed along the vertical central axis of the test box 1. Their function is to ensure the balance and stability of the vibration paint testing device 5 during operation and avoid test errors caused by uneven force.

[0045] For example, such as Figures 1-5As shown, the working principle is as follows: When the driven gear 408 rotates, the transmission shaft 508 on its side rotates accordingly, which in turn drives the half gear 509 to rotate. Since the half gear 509 meshes with the rack 505, the rotation of the half gear 509 will drive the rack 505 to reciprocate. The movement of the rack 505 drives the fixed plate 503 and the paint tray 502 to reciprocate through the connecting column 504. At the same time, the pull-back spring 501 allows the paint tray 502 to quickly return to its original position during vibration, thus realizing the function of reciprocating vibration. During vibration, the paint on the paint tray 502 is subjected to simulated forces during the drying process, which helps to test the crack resistance of the paint. In addition, the return spring 507 ensures the stability of the sliding plate 506 during vibration, further improving the accuracy and efficiency of the test.

[0046] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A water-based paint initial drying anti-cracking performance tester characterized by, Includes a test box (1), a control panel (2) is provided on the side of the test box (1), a bottom support pad (3) is fixedly connected to the bottom of the test box (1), a rapid air drying device (4) is provided on the inner side of the test box (1), and a vibration coating test device (5) is provided on the inner side of the test box (1). The rapid drying device (4) includes a mounting base (401), which is fixedly connected to the bottom inner side of the test box (1). A motor (402) is fixedly connected to the top of the mounting base (401). A drive gear (403) is fixedly connected to the output shaft of the motor (402). A connecting plate (404) is fixedly connected to the inner wall of the test box (1). A rotating sleeve (405) is fixedly connected through the side of the connecting plate (404). A rotating shaft (406) is rotatably connected to the inner wall of the rotating sleeve (405). A fan blade (407) is fixedly connected to one end of the rotating shaft (406). A driven gear (408) is fixedly connected to the end of the rotating shaft (406) away from the fan blade (407). A suction plate (409) is fixedly connected to the side of the test box (1).

2. The water-borne coating initial drying anti-cracking performance tester according to claim 1, characterized in that, A filter disc (6) is slidably connected through the side of the test chamber (1), and a lubrication funnel (7) is slidably connected through the top of the test chamber (1).

3. The water-borne coating initial drying anti-cracking performance tester according to claim 2, characterized in that, The driving gear (403) meshes with the driven gear (408), and the driving gear (403) has more teeth than the driven gear (408).

4. The water-borne coating initial drying anti-cracking performance tester according to claim 3, characterized in that, The lubrication funnel (7) is located directly above the driven gear (408), and the side of the suction plate (409) has several round holes.

5. A water-borne coating initial drying anti-cracking performance tester according to claim 4, characterized in that, The number of connecting plates (404) is set to several, and they are symmetrically distributed along the vertical central axis of the test box (1). The side of the filter plate (6) is provided with several round holes.

6. A water-based coating initial drying crack resistance testing machine according to claim 5, characterized in that, The vibration coating test device (5) includes a pull-back spring (501), one end of which is fixedly connected to the inner side of the test box (1). The end of the pull-back spring (501) away from the test box (1) is fixedly connected to a coating tray (502). A fixing plate (503) is fixedly connected to the side of the coating tray (502). A connecting column (504) is fixedly connected to the side of the fixing plate (503). A rack (505) is fixedly connected to the top of the rack (505). A reset spring (507) is fixedly connected to the side of the sliding plate (506). A drive shaft (508) is fixedly connected to the side of the driven gear (408). A half gear (509) is fixedly connected to the end of the drive shaft (508) away from the driven gear (408).

7. A water-borne coating initial drying anti-cracking performance tester according to claim 6, characterized in that, A reinforcing plate (8) is fixedly connected to the bottom inner side of the test box (1), and a limiting plate (9) is fixedly connected to the inner wall of the test box (1).

8. A water-borne coating initial drying anti-cracking performance tester according to claim 7, characterized in that, The side of the reinforcing plate (8) is connected to the circumferential surface of the drive shaft (508) and rotates through it. The top of the limiting plate (9) is slidably connected to the top of the sliding plate (506).

9. A water-borne coating initial drying anti-cracking performance tester according to claim 8, characterized in that, The half gear (509) meshes with the rack (505), and the end of the return spring (507) away from the sliding plate (506) is fixedly connected to the inner side of the test box (1).

10. A water-borne coating initial drying anti-cracking performance tester according to claim 9, characterized in that, The number of pull-back springs (501) is set to several and is symmetrically distributed along the vertical central axis of the test box (1). The number of paint trays (502) is set to two and is symmetrically distributed along the vertical central axis of the test box (1).

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