Coating surface dry and hard dry testing device

Abstract

The utility model relates to the technical field of coating testing equipment, in particular to a coating surface dryness and hard dryness testing device which comprises a film forming plate, a surface dryness testing head and a hard dryness testing head. The surface dry test head is positioned on one side of the plate surface of the film forming plate; and the hard dry testing head is positioned on the other side of the plate surface of the film forming plate, and is nested and matched with the film forming plate through the embedding hole to form a coating plane. In the application, the surface dry test of the coating sample is completed through the contact between the surface dry test head and the surface of the coating sample, and the hard dry test of the coating sample is completed through the hard dry test head and the bottom surface of the coating sample, so that a finger test mode is replaced; therefore, the paint surface dry and hard dry testing device can be suitable for paint surface dry and hard dry testing which damages human skin, and the application range of the paint surface dry and hard dry testing device is enlarged.

Description

Technical Field

[0001] This application relates to the technical field of coating testing equipment, and more particularly to a coating surface-dry and dry-dry testing device. Background Technology

[0002] The drying process of coatings can be divided into two stages: the surface drying stage and the actual drying stage. The surface drying stage refers to the process where, under specified conditions, the surface of a coating of a certain thickness changes from a liquid state to a solid film, while the portion below the surface remains liquid. The actual drying stage refers to the process where, under specified conditions, a coating of a certain thickness has completely changed from a liquid state to a solid state. The time required for the surface drying stage is called the surface drying time, and the time required for the actual drying stage is called the solid drying time. Surface drying time and solid drying time are important indicators for judging the quality of coatings.

[0003] In existing technologies, the surface of the coating is lightly touched with a finger, and the degree of surface dryness is determined by whether the coating adheres to the finger. After the film has formed and stood for a period of time, the surface of the coating is cut open with a blade, and the underlying layer and inside the film are touched with a finger again, and the degree of complete dryness is determined by whether the coating adheres to the finger. However, these technologies may cause damage to some types of coatings when touched with a finger, limiting their applicability. Utility Model Content

[0004] One of the technical problems this application aims to solve is that the method of testing the surface dryness and actual dryness of coatings by touching them with a finger has a limited scope of application.

[0005] To address the aforementioned technical problems, this application provides a coating surface dryness and actual dryness testing device, comprising:

[0006] The film-forming plate has embedded holes;

[0007] The surface drying test head is located on one side of the film-forming plate.

[0008] The solid test head is located on the other side of the film-forming plate and is nested with the film-forming plate through the embedding hole to form a coating plane.

[0009] In some embodiments, there are multiple embedded holes and multiple solid test heads, with the multiple solid test heads and the multiple embedded holes arranged in a one-to-one correspondence.

[0010] In some embodiments, a plurality of the embedding holes are arranged at intervals along the length direction of the film-forming plate, and the embedding holes and the surface drying test head are arranged at intervals along the width direction of the film-forming plate.

[0011] In some embodiments, the coating surface dryness and actual dryness testing device further includes a moving track and a moving component that moves in conjunction with the moving track, and the surface dryness testing head is connected to the moving component.

[0012] In some embodiments, the moving track extends along the length of the film-forming plate, and the moving track and the embedding hole are spaced apart along the width of the film-forming plate.

[0013] In some embodiments, the coating surface-dry and actual-dry testing device further includes a surface-drying expansion member and an actual-drying expansion member, wherein the surface-drying expansion member is drivenly connected to the surface-drying test head, and the actual-drying expansion member is drivenly connected to the actual-drying test head.

[0014] In some embodiments, the surface drying test head includes a switching section and a plurality of contact sections. The switching section connects the contact sections to the telescopic end of the surface drying telescopic member. The switching section is used to make the distance between at least one of the contact sections and the film-forming plate smaller than the distance between the other contact sections and the film-forming plate.

[0015] In some embodiments, the switching part includes a cylindrical workpiece, all of the contact parts are arranged at the bottom of the cylindrical workpiece and spaced apart along the circumference of the cylindrical workpiece, the top of the cylindrical workpiece is rotatably connected to the telescopic end of the surface dryer, and the angle between the axis of the cylindrical workpiece and the center line of the surface dryer is greater than 0° and less than 90°.

[0016] In some embodiments, the number of the drying expansion joints is multiple, and each of the multiple drying expansion joints is connected to a corresponding number of drying test heads. The coating surface drying and drying test device further includes a controller, which is electrically connected to the drying expansion joints and configured to:

[0017] Set the time interval for practical testing;

[0018] The actual testing expansion components are activated sequentially according to the actual testing time interval.

[0019] In some embodiments, the coating surface-dry and actual-dry testing device further includes a test chamber and a test drawer that is plugged into the test chamber, the film-forming plate serving as the cover of the test chamber, and the actual-dry test head placed inside the test drawer.

[0020] The coating surface dryness and actual dryness testing device provided in this application has the following beneficial effects through the above technical solution:

[0021] The solid-dry test head is inserted into the embedding hole and engaged with the film-forming plate. Together, the solid-dry test head and the film-forming plate serve as a carrier for the coating sample, forming a coating plane on which the coating sample is applied. After a preset waiting time, the surface-dry test is completed by contacting the surface of the coating sample with the surface-dry test head and observing whether the coating sample adheres to the head. After a preset waiting time, the solid-dry test head is separated from the film-forming plate, and the solid-dry test is completed by observing whether the coating sample adheres to the head. In this application, the surface-dry test head and the solid-dry test head are used to complete the surface-dry and solid-dry tests of the coating sample respectively, replacing the finger test method. This makes the coating surface-dry and solid-dry test device suitable for surface-dry and solid-dry tests of coatings that may damage human skin, thereby expanding the applicability of the coating surface-dry and solid-dry test device. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a front view of the coating surface-dry and actual-dryness testing device according to a specific embodiment of this application;

[0024] Figure 2 yes Figure 1 Schematic diagram of AA section in the middle;

[0025] Figure 3 This is a top view of the coating surface-drying and actual-drying testing device according to a specific embodiment of this application;

[0026] Figure 4 yes Figure 3 Schematic diagram of the BB cross section in the middle;

[0027] Figure 5 This is a schematic diagram of the controller according to a specific embodiment of this application.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100. Coating surface dry and solid dry testing device; 1. Film forming plate; 2. Surface dry test head; 21. Switching part; 22. Contact part; 3. Solid dry test head; 4. Embedding hole; 5. Moving track; 6. Moving part; 7. Surface dry telescopic part; 8. Solid dry telescopic part; 9. Thickness control part; 10. Controller; 11. Display; 12. Test box; 13. Test drawer; 14. Column. Detailed Implementation

[0030] The embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application. This application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0031] These embodiments are provided to make the application thorough and complete, and to fully express the scope of the application to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​illustrated in these embodiments should be interpreted as merely exemplary and not as limiting.

[0032] It should be noted that, in the description of this application, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "front," "rear," "inner," and "outer," etc., indicating orientation or positional relationships, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] Furthermore, the terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible margin of error. "Parallel" is not strictly parallel, but within the permissible margin of error. Terms such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well.

[0034] It should also be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device.

[0035] All terms used in this application have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0036] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0037] Example

[0038] like Figures 1 to 4 As shown in the figure, a specific embodiment of this application provides a coating surface dryness and actual dryness testing device 100, including a film-forming plate 1, a surface dryness testing head 2 and an actual dryness testing head 3, wherein the film-forming plate 1 has an embedding hole 4; the surface dryness testing head 2 is located on one side of the surface of the film-forming plate 1; the actual dryness testing head 3 is located on the other side of the surface of the film-forming plate 1, and the actual dryness testing head 3 is nested with the film-forming plate 1 through the embedding hole 4 to form a coating plane.

[0039] The surface drying time and actual drying time of coatings are important indicators for judging the quality of coatings. Surface drying time refers to the time required for the surface of a coating sample of a certain thickness to change from a liquid state to a solid film, while actual drying time refers to the time required for the entire coating sample of a certain thickness to change from a liquid state to a solid state. In other words, the surface drying test can be completed by testing the physical state of the surface of the coating sample, and the actual drying test can be completed by testing the physical state of the bottom surface of the coating sample. In a specific embodiment of this application, the surface drying test head 2 is used to contact the surface of the coating sample to complete the surface drying test, and the actual drying test head 3 is used to contact the bottom surface of the coating sample to complete the actual drying test, replacing the finger test method. This makes the coating surface drying and actual drying test device 100 suitable for surface drying and actual drying tests of coatings that may damage human skin, thereby increasing the applicability of the coating surface drying and actual drying test device 100.

[0040] Specifically, the paint sample is applied to the coating plane formed by the film-forming plate 1 and the solid-drying test head 3. The side of the paint sample that is in contact with the coating plane is the bottom surface of the paint sample, and the other side of the paint sample that is away from the coating plane is the surface surface of the paint sample. The time elapsed from the completion of paint application to the point where the surface-drying test head 2 comes into contact with the surface of the paint sample without any paint sample adhering to it is called the surface drying time. The time elapsed from the completion of paint application to the point where the solid-drying test head 3 comes into contact with the bottom surface of the paint sample without any paint sample adhering to it is called the solid-drying time. Only when both the surface drying time and the solid-drying time are less than the standard time is the paint sample deemed to meet the test standard.

[0041] Furthermore, while the surface drying test in this application still involves contact with the surface of the coating sample, the actual drying test uses the physical state of the bottom surface of the coating sample to indicate whether the sample is actually dry. Specifically, the actual drying test head 3 is embedded in the film-forming plate 1 and directly contacts the bottom surface of the coating sample, replacing the method of cutting or piercing the surface of the coating sample. Using the actual drying test head 3 in direct contact with the coating sample is safer than methods that require cutting the sample with a blade or piercing it with a needle, as sharp instruments such as blades and needles pose a risk of injury to test personnel.

[0042] For ease of description and understanding, in the specific embodiments of this application, the length direction of the film-forming plate 1 is the left-right direction, the width direction of the film-forming plate 1 is the front-back direction, and the thickness direction of the film-forming plate is the up-down direction, as shown by the arrows in the accompanying drawings.

[0043] like Figure 3 As shown, in some embodiments, there are multiple embedded holes 4 and multiple solid test heads 3, and the multiple solid test heads 3 are arranged in a one-to-one correspondence with the multiple embedded holes 4.

[0044] Specifically, the drying test head 3 needs to be in contact with the paint sample multiple times to obtain the drying time. Before conducting the drying test, the drying test head 3 needs to be nested with the film-forming plate 1 to form a coating plane. After the drying test begins, after the preset drying waiting time, the drying test head 3 is separated from the film-forming plate 1 for the first time to complete the first test. Under normal circumstances, the undried paint sample will adhere to the drying test head 3. Therefore, before conducting the next test, the drying test head 3 needs to be replaced or wiped to avoid the paint sample adhering to the previous test affecting the next test. After that, the drying test head 3 needs to be replaced or wiped after each test.

[0045] However, after the dry test head 3 contacts and separates from the un-dried paint sample, the un-dried paint sample adhering to the dry test head 3 may cause insufficient paint sample thickness at the embedding hole 4, affecting the test results, especially the first test. Therefore, by directly opening multiple embedding holes 4 on the film-forming plate 1 and aligning the dry test heads 3, the dry test is performed. Each dry test head 3 is separated from the film-forming plate 1 at test time intervals. In other words, each test uses a different dry test head 3 to contact different positions of the paint sample. Moreover, after the first separation from the film-forming plate 1, each dry test head 3 is not inserted into the embedding hole 4 to contact the bottom surface of the coated sample a second time. It can be seen that the test results at each test time interval are not affected by the possible changes in the thickness of the paint sample, thereby ensuring the accuracy of the test results and improving the reliability of the paint surface dry and dry test device 100.

[0046] Preferably, multiple embedding holes 4 are arranged sequentially at intervals along the left-right direction, and the centers of all embedding holes 4 are on the same straight line extending along the left-right direction. After a preset drying waiting time, the first drying test head 3 is separated from the film-forming plate 1, and it is observed whether a coating sample adheres to the drying test head 3. If a coating sample adheres, after the first time interval, the second drying test head 3 is separated from the film-forming plate 1, and it is observed whether a coating sample adheres to the drying test head 3. If a coating sample adheres, after the second time interval, the third drying test head 3 is separated from the film-forming plate 1, and it is observed whether a coating sample adheres to the drying test head 3. This process continues until no coating sample adheres to a certain drying test head 3, at which point the drying test stops. The drying time is the preset drying waiting time plus the sum of the multiple time intervals.

[0047] Furthermore, the embedded hole 4 and the surface drying test head 2 are arranged at intervals along the front-to-back direction. Since the surface drying test head 2 may cause compression to the interior of the paint sample after contacting the surface of the paint sample, and the actual drying test is performed after the surface drying test, by arranging the embedded hole 4 and the surface drying test head 2 at intervals, the surface drying test head 2 and the actual drying test head 3 can contact different areas of the paint sample, thereby avoiding the influence of the surface drying test on the actual drying test results, and thus improving the reliability of the paint surface drying and actual drying test device 100.

[0048] like Figure 1 and Figure 2 As shown, in some embodiments, the coating surface dryness and actual dryness testing device 100 further includes a moving track 5 and a moving part 6 that moves in conjunction with the moving track 5, and the surface dryness testing head 2 is connected to the moving part 6.

[0049] Specifically, the surface drying test head 2 needs to be in contact with the paint sample multiple times to obtain the surface drying time. During the surface drying test, after the preset surface drying waiting time, the surface drying test head 2 is first brought into contact with the surface of the paint sample. Under normal circumstances, the paint sample that has not been dried will adhere to the surface drying test head 2. Therefore, before the next test, the surface drying test head 2 needs to be replaced or wiped to avoid the paint sample adhering to the previous test affecting the next test. After that, the surface drying test head 2 needs to be replaced or wiped before each test.

[0050] However, after the surface drying test head 2 contacts and separates from the undried paint sample, the undried paint sample adhering to the surface drying test head 2 may result in insufficient thickness of the paint sample at the contact point, affecting the test results. Therefore, the surface drying test head 2 is moved by the moving part 6 and the moving track 5 to ensure that each test contacts a different position on the surface of the paint sample, thereby ensuring the accuracy of the test results and improving the reliability of the paint surface drying and actual drying test device 100.

[0051] Preferably, the moving track 5 extends in the left-right direction, and the moving track 5 and the embedding hole 4 are arranged at intervals in the front-back direction. The surface dry test head 2 is located between the moving track 5 and the embedding hole 4, so that the surface dry test head 2 and the actual dry test head 3 can contact the paint sample in different areas, thereby avoiding the influence of the surface dry test on the actual dry test results, and thus improving the reliability of the paint surface dry and actual dry test device 100.

[0052] After the preset surface drying waiting time, the surface drying test head 3 is first brought into contact with the film-forming plate 1 for testing. It is observed whether the coating sample adheres to the surface drying test head 3. If the coating sample adheres, after the first time interval, the surface drying test head 3 is moved to the second position to bring into contact with the film-forming plate 1 for testing. It is observed whether the coating sample adheres to the surface drying test head 3. If the coating sample adheres, after the second time interval, the surface drying test head 3 is moved to the third position to bring into contact with the film-forming plate 1 for testing. It is observed whether the coating sample adheres to the surface drying test head 3. This process is repeated until no coating sample adheres to a certain surface drying test head 3, at which point the surface drying test stops. The surface drying time is the preset surface drying waiting time plus the sum of the multiple time intervals.

[0053] like Figure 1 and Figure 2 As shown, in some embodiments, the coating surface dry and actual dry testing device 100 further includes a surface dry expansion member 7 and an actual dry expansion member 8. The surface dry expansion member 7 is driven to be connected to the surface dry testing head 2, and the actual dry expansion member 8 is driven to be connected to the actual dry testing head 3.

[0054] Both the surface-dry test head 2 and the solid-dry test head 3 need to contact the paint sample and then separate to observe whether any paint sample adheres. The surface-dry telescopic components 7 and 8 determine the stroke of the surface-dry test head 2 and the solid-dry test head 3, avoiding the influence of manual operation on the test results, such as inserting the surface-dry test head 2 too deeply into the paint sample. This ensures the accuracy of the test results and improves the reliability of the paint surface-dry and solid-dryness testing device 100. Specifically, both the surface-dry telescopic components 7 and 8 extend in the vertical direction, and can be made using cylinders, electric telescopic rods, etc.

[0055] like Figure 1 and Figure 2 As shown, in some embodiments, the surface drying test head 2 includes a switching part 21 and a plurality of contact parts 22. The switching part 21 connects the contact parts 22 to the telescopic end of the surface drying telescopic member 7. The switching part 21 is used to make the distance between at least one contact part 22 and the film-forming plate 1 smaller than the distance between other contact parts 22 and the film-forming plate 1.

[0056] Specifically, during the surface drying test, each contact part 22 is used to complete one test. There is no need to wipe or replace the surface drying test head 2 after each test. The switching part 21 ensures that only one contact part 22 contacts the surface of the paint sample for each test, so that each contact part 22 can correctly reflect the test results, thereby ensuring the accuracy of the test results and improving the reliability of the paint surface drying and actual drying test device 100.

[0057] Preferably, the switching part 21 includes a cylindrical workpiece, and all contact parts 22 are arranged at the bottom of the cylindrical workpiece and spaced apart along the circumference of the cylindrical workpiece. Each contact part 22 is connected to the switching part 21 by a ballpoint pen pressing structure or an electric telescopic structure to ensure that the contact part 22 used in this test is the first to contact the surface of the coating sample.

[0058] It should be noted that the ballpoint pen pressing structure or the electric telescopic structure are well known to those skilled in the art and are not the core inventive points of this application. They will not be elaborated here. Apart from the ballpoint pen pressing structure and the electric telescopic structure, other mechanisms and structures that can realize the extension of the contact part 22 to the switching part 21 and the retraction of the switching part 21 are all within the protection scope of this application.

[0059] Preferably, the switching part 21 includes a cylindrical workpiece, all contact parts 22 are arranged at the bottom of the cylindrical workpiece and spaced apart along the circumference of the cylindrical workpiece, the top of the cylindrical workpiece is rotatably connected to the telescopic end of the gauge extension member 7, the bottom of the cylindrical workpiece is located below the gauge extension member 7, and the angle between the axis of the cylindrical workpiece and the center line of the gauge extension member 7 is greater than 0° and less than 90°.

[0060] Specifically, all contact portions 22 have the same length. By tilting the cylindrical workpiece at the lower end of the surface drying telescopic member 7, the bottom surface of the cylindrical workpiece is positioned at the lowest point, so that the distance between the contact portion 22 at the lowest position and the film-forming plate 1 is smaller than the distance between the other contact portions 22 and the film-forming plate 1. The contact portion 22 at the lowest position is the contact portion 22 used in this test.

[0061] Furthermore, the center of the top of the cylindrical workpiece is rotatably connected to the telescopic end of the surface drying telescopic member 7 so that the cylindrical workpiece can rotate. By rotating the cylindrical workpiece, different contact parts 22 are located at the lowest position, thereby ensuring that only one contact part 22 contacts the surface of the coating sample in each test, thus improving the reliability of the coating surface drying and actual drying test device 100.

[0062] Furthermore, by using an inclined cylindrical workpiece as the switching part 21, there is no need to add a secondary telescopic mechanism between the switching part 21 and the contact part 22, thus simplifying the structural composition of the coating surface drying and actual drying test device 100. The angle between the axis of the cylindrical workpiece and the center line of the surface drying telescopic member 7 is preferably 30°.

[0063] like Figure 1 and Figure 2 As shown, in some embodiments, thickness control members 9 are provided at the front and rear ends of the top of the film-forming plate 1. The thickness control members 9 and the film-forming plate 1 form an upward-facing groove structure. The thickness of the thickness control members 9 is designed according to the standard thickness of the coating surface-drying and fully-drying test. The thickness control members 9 and the film-forming plate 1 are integrally formed.

[0064] In some embodiments, the paint surface-drying and actual-drying testing device 100 further includes a test chamber 12 and a test drawer 13 that is inserted into the test chamber 12. The film-forming plate 1 serves as the cover of the test chamber 12, and the front end of the test chamber 12 is open. The test drawer 13 is inserted into the test chamber 12 through the opening. Columns 14 are connected to the left and right ends of the test chamber 12. The columns 14 extend upward and are connected to the moving track 5. The actual-drying test head 3 and the actual-drying telescopic component 8 are located inside the test drawer 13 and below the film-forming plate 1. The surface-drying test head 2 and the moving track 5 are located above the film-forming plate 1. The columns 14 and the test chamber 12 make the actual-drying test head 3, the actual-drying telescopic component 8, the surface-drying test head 2, and the moving track 5 a whole, thereby improving the overall integrity and portability of the paint surface-drying and actual-drying testing device 100.

[0065] like Figure 3 and Figure 4 As shown, in some embodiments, there are multiple solid-drying expansion joints 8, and each of the multiple solid-drying expansion joints 8 is connected to a corresponding solid-drying test head 3. The solid-drying test head 3 and the solid-drying expansion joints 8 are placed in the test drawer 13. After the test is completed, the test drawer 13 is pulled out to observe the adhesion of the paint sample on each solid-drying test head 3.

[0066] like Figure 5 As shown, in some embodiments, the moving part 6, the surface drying telescopic part 7, the solid drying telescopic part 8, and the switching part 21 are all driven by servo motors. The coating surface drying and solid drying test device 100 also includes a controller 10. The controller 10 is electrically connected to the servo motor that drives the moving part 6 to move, the servo motor that drives the surface drying telescopic part 7 to extend and retract, the servo motor that drives the switching part 21 to rotate, and the servo motor that drives the solid drying telescopic part 8 to extend and retract, so as to realize the automatic control of each servo motor, thereby realizing the automatic performance of the coating surface drying and solid drying test.

[0067] Because the surface-dry and dry-to-hardness tests take a long time, testers usually need to work continuously for a considerable period of time to complete the tests on the coating samples. Furthermore, there cannot be any excessively long time intervals during the process. Therefore, completing the entire test process through the test flow set by the controller 10 can not only reduce the workload of testers, but also allow them to handle other tasks during the test and check the test results after the test is completed.

[0068] Before the test begins, the tester needs to set the surface drying waiting time, surface drying test interval, surface drying test interval distance, actual drying waiting time, and actual drying test interval through the controller 10. The surface drying waiting time is the interval from applying a standard thickness coating sample to the film-forming plate 1 to the start of the first surface drying test; the surface drying test interval is the interval between two adjacent surface drying tests; the surface drying test interval distance is the distance moved by the moving part 6 in each surface drying test; the actual drying waiting time is the interval from applying a standard thickness coating sample to the film-forming plate 1 to the start of the first actual drying test; and the actual drying test interval is the interval between two adjacent actual drying tests.

[0069] In some embodiments, all contact portions 22 are numbered sequentially, such as first contact portion 22, second contact portion 22, third contact portion 22, etc., so that testers can directly determine which test has resulted in surface drying of the coating sample and thus calculate the surface drying time; all actual drying test heads 3 are numbered sequentially, such as first actual drying test head 3, second actual drying test head 3, third actual drying test head 3, etc., so that testers can directly determine which test has resulted in actual drying of the coating sample and thus calculate the actual drying time.

[0070] In other words, testers do not need to observe the adhesion of the coating sample on each contact 22 or each dry test head 3 in real time, but only need to observe it when the test is about to end, thereby reducing the testers' working time and labor intensity.

[0071] The testing process is described in detail below:

[0072] Surface drying test: First, after coating a standard thickness of paint sample onto the film-forming plate 1 and after the surface drying test start time, the first surface drying test is conducted. The controller 10 controls the surface drying telescopic component 7 to move the first contact part 22 to contact and separate from the surface of the paint sample. Then, the controller controls the switching part 21 to rotate so that the second contact part 22 is in the lowest position. Subsequently, after the surface drying test interval, the second surface drying test is conducted. The controller 10 controls the moving part 6 to move the surface drying test interval distance and then controls the surface drying telescopic component 7 to move the second contact part 22 to contact and separate from the surface of the paint sample. Then, the controller controls the switching part 21 to rotate so that the third contact part 22 is in the lowest position. This process is repeated for multiple surface drying test intervals until all contact parts 22 are in contact and separated from the surface of the paint sample. Finally, the tester observes from which contact part 22 no longer adheres to the paint sample and calculates the surface drying time based on the surface drying test start time and surface drying test interval.

[0073] Drying Test: First, after applying a standard thickness coating sample to the film-forming plate 1 and waiting for the drying test start time, the first drying test begins. Controller 10 controls the first drying telescopic component 8 to separate the first drying test head 3 from the film-forming plate 1 and move it below the film-forming plate 1. Subsequently, after the drying test interval, the second drying test begins. Controller 10 controls the second drying telescopic component 8 to separate the second drying test head 3 from the film-forming plate 1 and move it below the film-forming plate 1. This process is repeated for multiple drying test intervals until all drying telescopic components 8 are separated from the film-forming plate 1 and moved below it. Finally, the tester removes the test drawer 13 from the test chamber 12 and observes from which drying test head 3 no coating sample adheres. The drying time is calculated based on the drying test start time and the drying test interval.

[0074] In some embodiments, the coating surface-drying and actual-drying testing device 100 also includes a display 11 electrically connected to the controller 10. The display 11 can display the set surface-drying test start time, surface-drying test time interval, surface-drying test distance, actual-drying test start time, and actual-drying test time interval, so that the tester can check the test status at any time. The display 11 and the controller 10 can be integrated into the test chamber 12 or set up separately.

[0075] It should be noted that the circuits and principles by which the controller 10 controls the various parts are technologies well known to those skilled in the art and are not part of the core inventive points of this application, so they will not be elaborated here.

[0076] In this application, the surface-drying and actual-drying tests of coatings are performed using the surface-drying test head 2 and the actual-drying test head 3, replacing the finger-contact test method. This avoids harm to the human body from toxic or corrosive coating samples. Furthermore, the surface-drying and actual-drying tests are automated through the surface-drying telescopic component 7, the actual-drying telescopic component 8, the moving component 6, the switching unit 21, and the controller 10. This reduces the labor intensity and working time of testers, avoids errors caused by human operation, and thus improves testing efficiency without wasting manpower.

[0077] The embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0078] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any manner.

Claims

1. A paint tack-free dry test device characterized by, The coating surface dry and dry test device (100) comprises a film forming plate (1) provided with embedded holes (4); a surface dry test head (2) located on one side of the plate surface of the film forming plate (1); and a dry test head (3) located on the other side of the plate surface of the film forming plate (1), the dry test head (3) is nested with the film forming plate (1) through the embedded hole (4) to form a coating plane. The number of the embedded holes (4) is multiple, the number of the dry test head (3) is multiple, and the multiple dry test heads (3) are arranged one by one with the multiple embedded holes (4). The multiple embedded holes (4) are arranged along the length direction of the film forming plate (1), and the embedded holes (4) and the surface dry test head (2) are arranged along the width direction of the film forming plate (1). The coating surface dry and dry test device (100) further comprises a moving track (5) and a moving part (6) movably connected with the moving track (5), and the surface dry test head (2) is connected with the moving part (6).

2. The paint tack-free dry test device of claim 1, wherein, The moving track (5) extends along the length direction of the film forming plate (1), and the moving track (5) and the embedded hole (4) are arranged along the width direction of the film forming plate (1).

3. The paint tack-free dry test device of claim 2, wherein, The coating surface dry and dry test device (100) further comprises a surface dry expansion part (7) and a dry expansion part (8), the surface dry expansion part (7) is drivingly connected with the surface dry test head (2), and the dry expansion part (8) is drivingly connected with the dry test head (3).

4. The paint tack-free dry test device of claim 3, wherein, The surface dry test head (2) comprises a switching part (21) and multiple contact parts (22), the switching part (21) connects the contact parts (22) and the expansion end of the surface dry expansion part (7), and the switching part (21) is used for making the distance between at least one of the contact parts (22) and the film forming plate (1) smaller than the distance between other contact parts (22) and the film forming plate (1).

5. The paint tack-free dry test device of claim 4, wherein, The switching part (21) comprises a cylindrical workpiece, all the contact parts (22) are arranged at the bottom of the cylindrical workpiece and are arranged along the circumference of the cylindrical workpiece, the top of the cylindrical workpiece is rotationally connected with the expansion end of the surface dry expansion part (7), and the angle between the axis of the cylindrical workpiece and the center line of the surface dry expansion part (7) is greater than 0° and less than 90°.

6. The paint tack-free dry test device of claim 1, wherein, The number of the dry expansion part (8) is multiple, and the multiple dry expansion parts (8) are connected one by one with the multiple dry test heads (3), the coating surface dry and dry test device (100) further comprises a controller (10), the controller (10) is electrically connected with the dry expansion part (8) and is configured to:

7. The paint tack-free dry test device of claim 6, wherein, set a dry test time interval; 8. The paint tack-free dry test device of claim 7, wherein, start the dry expansion part (8) according to the dry test time interval.

9. The paint tack-free dry test device of claim 6, wherein, The coating surface dry and dry test device (100) further comprises a test box body (12) and a test drawer (13) plug-connected with the test box body (12), the film forming plate (1) serves as the cover plate of the test box body (12), and the dry test head (3) is placed in the test drawer (13). ​ ​ 10. The paint tack-free dry test device according to any one of claims 1 to 9, wherein ​

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