An accelerated aging tester for film testing

Abstract

The present invention discloses an accelerated aging tester for film testing, comprising a machine body and a test area within the machine body. The test area is provided with an irradiation lamp and a spray pipe located at the top, and a positioning frame and a limit frame are provided below the irradiation lamp and the spray pipe. Light and water mist both contact the film on the positioning frame through perforations. The machine also comprises a support plate, an adjustable contact surface is provided above the support plate, the support plate is installed in the perforations in the positioning frame, and the contact surface is used to contact the lower surface of the film. This accelerated aging tester for film testing redesigns the film placement and limit structure, and can simulate various building exterior surface structures to test film performance. At the same time, it can utilize the movement of the film placement structure itself to perform a compacting operation on the film, and utilize this movement to generate a driving force while achieving film tension, thereby ensuring the accuracy of performance test data.

Description

Technical Field

[0001] The present invention relates to the technical field of film detection, in particular to an accelerated aging testing machine for film detection. Background Art

[0002] Film products such as automotive window films and architectural films need to work in outdoor environments for a long time, so they are exposed to sunlight, water mist and dust for a long time. At the same time, in order to ensure that the replacement cycle of such film products can be extended as much as possible, they need to have good UV resistance and a certain degree of impact resistance. Therefore, it is necessary to use corresponding aging testers to test such film products;

[0003] Aging testers on the market generally use UV lamps to simulate sunlight exposure, and are combined with temperature control units to simulate the material damage caused by sunlight exposure as realistically as possible. To improve the accuracy of film testing data and the diversity of testing, condensation humidity and water spray adjustment methods are also added to the equipment to simulate the damage caused by dew and rain, as well as sunlight. However, existing similar testers still have the following problems when performing actual testing on the above-mentioned film products:

[0004] Some membrane structures with special installation surfaces, especially those used on the surface of building structures, sometimes need to maintain a structural distribution in other shapes such as wavy in addition to a flat distribution in order to maintain good adhesion with the building surface. Because the distribution shapes of the products are different, the membrane products also need to maintain a similar distribution state during the actual testing process to improve the accuracy of the test results. However, existing testing machines can only perform testing by stretching or laying the membrane flat on a flat structure, which is not accurate enough. Summary of the Invention

[0005] The object of the present invention is to provide an accelerated aging testing machine for membrane detection, so as to solve the problem proposed in the above background technology that some membrane structures have special installation surfaces, especially those used on the surface of building structures. In order to maintain good adhesion with the building surface, the membrane products sometimes need to maintain a structural distribution in other shapes such as wavy shapes in addition to a planar distribution. Because the distribution shapes of the products are different, in the actual detection process, the membrane products also need to maintain a similar distribution state in order to improve the accuracy of the detection results. However, the existing testing machines can only perform detection by stretching or laying the membrane flat on a flat structure, which results in insufficient accuracy.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an accelerated aging tester for film detection, comprising a machine body and a test area in the machine body, wherein an irradiation lamp and a spray pipe are provided at the top of the test area, and a positioning frame and a limit frame are provided below the irradiation lamp and the spray pipe, and the positioning frame adjusts the distance between it and the limit frame by moving up and down, and corresponding through-holes are provided at the centers of the two, and light and water mist contact the film on the positioning frame through the through-holes, and further comprises a support plate, an adjustable contact surface is provided above the support plate, the support plate is installed in the through-hole in the positioning frame, and the contact surface is used to fit in contact with the lower surface of the film.

[0007] As a further feature, the adjustable contact surface is a replacement plate, the upper end surface of the replacement plate is a planar structure or a non-planar structure, and the lower end surface of the replacement plate is detachably mounted on the upper end surface of the support plate by bolts.

[0008] Furthermore, the adjustable contact surface is an elastic layer fixedly fitted on the upper end surface of the support plate at its edge, and the covering space below the elastic layer is connected to the internal space of the support plate above the first valve plate through an opening, and the first valve plate is vertically and tightly slidably installed in the internal space of the support plate, and a screw rod is rotatably installed on the lower end surface of the first valve plate, the middle section of the screw rod is threadedly connected to the bottom wall of the support plate, and the bottom end of the screw rod extends to the outside of the support plate and is connected to the handle.

[0009] Furthermore, a first suction hole is provided on the upper end surface of the support plate, and the cavity below the suction hole is connected to the internal space of the support plate below the first valve plate through the first air pipe.

[0010] Furthermore, the upper end surface of the positioning frame is also inlaid with a horizontal elastic sliding tensioning plate, the bottom end of the tensioning plate is connected to the moving device, and the upper end surface of the tensioning plate is provided with a second suction hole, which is connected to the negative pressure device. The film placed on its upper end surface is tensioned by the negative pressure adsorption of the second suction hole and the movement of the tensioning plate.

[0011] Furthermore, the moving device includes a horizontal axis and a vertical axis located inside the positioning frame, and the close ends of the two are connected by mutually meshing bevel teeth, and the bottom end of the vertical axis is connected to the rotation drive device. The horizontal axis is equipped with vertically distributed paddles, and the side of the paddle is provided with a paddle rod fixed to the lower end surface of the tensioning plate, and the paddle rod slides horizontally through the positioning frame.

[0012] Furthermore, the driving device includes a vertical cylinder, the upper half of the vertical shaft is rotatably mounted on the bottom wall of the positioning frame, and the middle section of the twisted rod is threadedly connected to the top of the vertical cylinder, and the vertical cylinder is fixed in the test area.

[0013] Furthermore, the negative pressure device includes a second air pipe and a second valve plate, the second valve plate is vertically and tightly slidably installed inside the vertical cylinder, and the upper end surface of the second valve plate is connected to the bottom end of the connecting rod, the top end of the connecting rod is rotatably connected to the bottom end of the vertical axis, and the connecting rod is also vertically slidably connected to the inside of the vertical cylinder through a horizontal plate.

[0014] Furthermore, the space below the second valve plate is connected to the bottom end of the second air pipe of the hose material, and the top end of the second air pipe is connected to the cavity below the second suction hole through a hollow lever, and the cavity is opened inside the tensioning plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: the accelerated aging tester for membrane testing redesigns the placement and limiting structure of the membrane, can simulate various building exterior surface structures to test the performance of the membrane, and can utilize the movement of the membrane placement structure itself to press the membrane, and utilize this movement to generate driving force and simultaneously achieve membrane tension, thereby ensuring the accuracy of performance test data;

[0016] 1. The structural design of the replacement plate allows users to easily remove and replace the replacement plate with different surface structures by bolts, so that the structure supporting the lower surface of the membrane can be adjusted according to actual needs, thereby adapting to the inspection requirements of different building surface structures;

[0017] 2. The structural design of the elastic layer and the first valve plate allows users to easily replace the simulated building surface structure beneath the membrane by rotating the screw and driving the valve plate to move, thereby changing the air pressure. This makes it more convenient to use and requires no disassembly or replacement.

[0018] Furthermore, the structural design of the first valve plate is combined with the use of the first suction hole, so that the movement of the first valve plate can not only achieve the change of the surface structure, but also use the negative pressure effect to make the film fit tightly to the concave part of the irregular surface structure, thereby ensuring the accuracy of the film detection data;

[0019] 3. The structural design of the tensioning plate and the vertical axis and vertical cylinder enables the positioning frame to move upward to cooperate with the limit frame to press the film, while at the same time, it can drive the vertical axis to rotate synchronously and generate driving force to drive the horizontal axis to rotate together, so that the tensioning plate can slide accordingly on the upper end surface of the positioning frame, and in conjunction with the use of the second valve plate, the upward movement of the positioning frame can also produce a negative pressure adsorption effect, so that the film can be adsorbed and fixed on the tensioning plate accordingly, thereby utilizing the necessary movement of the positioning frame to automatically tension the film, and no additional electrical control equipment is required, which is very energy-saving and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2Schematic diagram of the internal structure of the test area of ​​the present invention;

[0022] Figure 3 Schematic diagram of the limit frame structure of the present invention;

[0023] Figure 4 This is a schematic structural diagram of a support plate according to a first embodiment of the present invention;

[0024] Figure 5 Schematic diagram of the cross-sectional structure of a support plate according to a second embodiment of the present invention;

[0025] Figure 6 Schematic diagram of the positioning frame structure in the second embodiment of the present invention;

[0026] Figure 7 For the present invention Figure 6 Schematic diagram of the cross-sectional structure of the positioning frame;

[0027] Figure 8 It is a schematic diagram of the horizontal axis structure of the present invention;

[0028] Figure 9 It is a schematic diagram of the cross-sectional structure of the vertical tube of the present invention.

[0029] In the figure: 1. body; 2. test area; 3. positioning frame; 4. limit frame; 5. irradiation lamp; 6. spray pipe; 7. perforation; 8. support plate; 9. replacement plate; 10. elastic layer; 11. first valve plate; 12. screw rod; 13. first suction hole; 14. first air pipe; 15. tensioning plate; 16. second suction hole; 17. horizontal axis; 18. paddle; 19. paddle rod; 20. bevel gear; 21. vertical axis; 22. vertical cylinder; 23. connecting rod; 24. horizontal plate; 25. valve plate; 26. second air pipe. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] See also Figure 1-9 , the present invention provides the following technical solutions:

[0032] Example 1: In order to solve the problems existing in the prior art, the following solutions are disclosed. Figure 1-3As shown, it includes a body 1 and a test area 2 in the body 1, and the test area 2 is provided with an irradiation lamp 5 and a spray pipe 6 located at the top, and a positioning frame 3 and a limit frame 4 are provided below the irradiation lamp 5 and the spray pipe 6. The positioning frame 3 adjusts the distance between itself and the limit frame 4 by moving up and down, and the centers of the two are provided with corresponding through-holes 7 running through the upper and lower parts. The light and the water mist are in contact with the film on the positioning frame 3 through the through-holes 7. It also includes a support plate 8, and an adjustable contact surface is provided above the support plate 8. The support plate 8 is installed in the through-hole 7 in the positioning frame 3, and the contact surface is used to fit in contact with the lower surface of the film. The adjustable contact surface is a replacement plate 9, and the upper end surface of the replacement plate 9 is a planar structure or a non-planar structure, and the lower end surface of the replacement plate 9 can be replaced by bolts. The disassembly is installed on the upper end surface of the support plate 8, and the control area and the test area 2 for testing are integrated into the body 1. When in use, the membrane product can be first laid on the upper end surface of the positioning frame 3, wherein the membrane must completely cover the perforation 7 in the positioning frame 3, and then the positioning frame 3 can be moved upward so that the membrane on the positioning frame 3 can be pressed and limited by the limit frame 4, and then the irradiation lamp 5 and the spray pipe 6 can be used to perform simulated performance tests of sunlight, rain and fog droplets on the membrane. When the membrane covers the perforation 7, the lower end surface of the membrane will also cover the replacement plate 9 accordingly, and different replacement plates 9 have different shapes and structures of their upper end surfaces, so that it is convenient for users to disassemble the replacement plate 9 by bolts, so that the membrane can simulate the use test on building surfaces of different shapes.

[0033] Example 2: In this example, another different technical solution is disclosed, namely, the use test of the membrane on building surfaces with different shapes, specifically as follows Figure 5 As shown, unlike the first embodiment, the solution in this embodiment is to achieve the replacement of different contact surfaces without disassembly through a deformable structure. The adjustable contact surface is an elastic layer 10 fixedly fitted on the upper end surface of the support plate 8 at the edge. The covering space below the elastic layer 10 is connected to the internal space of the support plate 8 above the first valve plate 11 through an opening, and the first valve plate 11 is vertically and tightly slidably installed in the internal space of the support plate 8. A screw rod 12 is rotatably installed on the lower end surface of the first valve plate 11. The middle section of the screw rod 12 is threadedly connected to the bottom wall of the support plate 8, and the bottom end of the screw rod 12 extends to the outside of the support plate 8 and is connected to the handle. The user can rotate the screw rod 12 before placing the film. The rotation of the screw rod 12 will drive itself and the first valve plate 11 to move in the support plate 8 under the action of the threaded transmission between it and the support plate 8. After the first valve plate 11 moves upward, the space above it is compressed, and the airflow will pass through the opening into the space below the elastic layer 10, and drive the elastic layer 10 to occur as follows Figure 5 The deformation shown in the figure can be easily simulated to achieve the purpose of simulating the surfaces of various building structures.

[0034] In the prior art, even for relatively complex building surfaces, the membrane needs to be completely in contact with the surface. However, in the test equipment, the membrane structure is easily guided by the protruding structure of the simulated structure surface, resulting in insufficient contact between the membrane and the recessed area. If a corresponding structure is used to press from above, the outer surface of the membrane will also be insufficiently in contact with the simulated environmental factors. Therefore, in order to solve this problem, the following solution is also disclosed in this embodiment, such as Figure 5 As shown, a first suction hole 13 is provided on the upper end surface of the support plate 8, and the cavity below the suction hole is connected to the internal space of the support plate 8 below the first valve plate 11 through the first air pipe 14. When the first valve plate 11 moves upward, the space below it will be in a negative pressure state accordingly. Therefore, under the connection action of the first air pipe 14, the first suction hole 13 will also perform negative pressure adsorption on the film above it accordingly, ensuring that the film itself is stretched while fitting tightly with the simulated building surface to ensure the test effect.

[0035] Since the film itself is relatively soft, after being placed directly on the positioning frame 3, it needs to be manually tightened and then pressed and limited by the limit frame 4 to ensure the accuracy of the test operation. The actual operation is troublesome. Therefore, in order to solve this problem, the following solution is disclosed in this embodiment. Figure 7-8 As shown, the upper end surface of the positioning frame 3 is also inlaid with a horizontal elastic sliding tensioning plate 15, the bottom end of the tensioning plate 15 is connected to the moving device, and the upper end surface of the tensioning plate 15 is provided with a second suction hole 16, the second suction hole 16 is connected to the negative pressure device, and the film placed on its upper end surface is tensioned by the negative pressure adsorption of the second suction hole 16 and the movement of the tensioning plate 15. The moving device includes a horizontal axis 17 and a vertical axis 21 located inside the positioning frame 3. The ends of the two are connected by mutually meshing bevel teeth 20, and the bottom end of the vertical axis 21 is connected to the rotation drive device. A vertically distributed paddle 18 is installed on the horizontal axis 17, and a fixed There is a lever 19 on the lower end surface of the tensioning plate 15, and the lever 19 slides horizontally through the positioning frame 3. After the film is normally placed on the positioning frame 3 and the tensioning plate 15, the driving device will drive the vertical shaft 21 to rotate. Therefore, under the meshing transmission action of the bevel gear 20, the horizontal shaft 17 will rotate synchronously, and drive the paddle 18 to rotate synchronously and squeeze on the lever 19. Under the squeezing action of the paddle 18, the lever 19 will drive the tensioning plate 15 to move synchronously, and the negative pressure device will operate synchronously to adsorb and fix the film through the second suction hole 16. Therefore, the tensioning plates 15 in multiple directions will move synchronously toward the outside after fixing the film, thereby realizing automatic tensioning of the film.

[0036] In this embodiment, in order to further reduce the use and subsequent maintenance costs of the device itself, the following solutions are additionally disclosed, specifically: Figure 9As shown, the driving device includes a vertical cylinder 22, the upper half of the vertical shaft 21 is rotatably mounted on the bottom wall of the positioning frame 3, and the twisted rod section in the middle section is threadedly connected to the top of the vertical cylinder 22, and the vertical cylinder 22 is fixed in the test area 2, and the negative pressure device includes a second air pipe 26 and a second valve plate 25, the second valve plate 25 is vertically and tightly slidably mounted on the inside of the vertical cylinder 22, and the upper end surface of the second valve plate 25 is connected to the bottom end of the connecting rod 23, the top end of the connecting rod 23 is rotatably connected to the bottom end of the vertical shaft 21, and the connecting rod 23 is also vertically slidably connected to the inside of the vertical cylinder 22 through a horizontal plate 24, and the space below the second valve plate 25 is connected to the bottom end of the second air pipe 26 of the hose material, and the top end of the second air pipe 26 is connected to the space below the second suction hole 16 through a hollow lever 19. The two cavities are connected, and the cavity is opened inside the tensioning plate 15. When the positioning frame 3 moves upward, under the threaded transmission action of the twisted rod and the vertical cylinder 22, the vertical shaft 21 will be in a rotating state during the vertical movement. Therefore, the use of the vertical cylinder 22 can replace the use of a motor or other driving rotating equipment, so that when the positioning frame 3 moves upward, it can generate a driving force to drive the vertical shaft 21 and the horizontal shaft 17 to rotate. At the same time, the valve plate 25 will move upward synchronously driven by the connecting rod 23. Therefore, the space below the valve plate 25 will be in a negative pressure state accordingly, and under the connection of the second air pipe 26, the second suction hole 16 will be in a negative pressure state accordingly, thereby replacing electrical equipment such as a fan to achieve the effect of a negative pressure adsorption film, which is more energy-saving and environmentally friendly.

[0037] It should be understood that the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the protection content of the present invention. The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0038] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An accelerated aging tester for film detection, comprising a body (1) and a test area (2) in the body (1), wherein an irradiation lamp (5) and a spray pipe (6) are provided at the top of the test area (2), and a positioning frame (3) and a limit frame (4) are provided below the irradiation lamp (5) and the spray pipe (6), wherein the positioning frame (3) is movable up and down to adjust the distance between the positioning frame (3) and the limit frame (4), and corresponding through holes (7) are provided at the centers of the two, and light and water mist are contacted with the film on the positioning frame (3) through the through holes (7). The invention is characterized in that: It also includes a support plate (8), an adjustable contact surface is provided above the support plate (8), the support plate (8) is installed in the perforation (7) in the positioning frame (3), and the contact surface is used to fit and contact the lower surface of the film; The adjustable contact surface is an elastic layer (10) fixedly fitted on the upper end surface of the support plate (8) at its edge, the covering space below the elastic layer (10) is communicated with the internal space of the support plate (8) above the first valve plate (11) through an opening, and the first valve plate (11) is vertically and tightly slidably installed in the internal space of the support plate (8), and a screw rod (12) is rotatably installed on the lower end surface of the first valve plate (11), the middle section of the screw rod (12) is threadedly connected to the bottom wall of the support plate (8), and the bottom end of the screw rod (12) extends to the outside of the support plate (8) and is connected to the handle; A first suction hole (13) is provided on the upper end surface of the support plate (8), and a cavity below the suction hole is connected to the internal space of the support plate (8) below the first valve plate (11) through a first air pipe (14).

2. The accelerated aging tester for film testing according to claim 1, characterized in that: The adjustable contact surface is a replacement plate (9), the upper end surface of the replacement plate (9) is a planar structure or a non-planar structure, and the lower end surface of the replacement plate (9) is detachably mounted on the upper end surface of the support plate (8) by means of bolts.

3. An accelerated aging tester for film testing according to any one of claims 1-2, characterized in that: The upper end surface of the positioning frame (3) is also inlaid with a horizontal elastic sliding tensioning plate (15), the bottom end of the tensioning plate (15) is connected to the moving device, and the upper end surface of the tensioning plate (15) is provided with a second suction hole (16), which is connected to the negative pressure device. The film placed on the upper end surface is tensioned by the negative pressure adsorption of the second suction hole (16) and the movement of the tensioning plate (15).

4. The accelerated aging tester for film testing according to claim 3, characterized in that: The moving device includes a horizontal axis (17) and a vertical axis (21) located inside the positioning frame (3), and the ends of the two are connected by mutually meshing bevel teeth (20), and the bottom end of the vertical axis (21) is connected to the rotation drive device. A vertically distributed paddle (18) is installed on the horizontal axis (17), and a paddle (19) fixed to the lower end surface of the tensioning plate (15) is provided on the side of the paddle (18), and the paddle (19) is horizontally slidable and penetrates the positioning frame (3).

5. The accelerated aging tester for film testing according to claim 4, characterized in that: The driving device includes a vertical cylinder (22), the upper half of the vertical shaft (21) is rotatably mounted on the bottom wall of the positioning frame (3), and the middle twisted rod section is threadedly connected to the top of the vertical cylinder (22), and the vertical cylinder (22) is fixed in the test area (2).

6. The accelerated aging tester for film testing according to claim 5, characterized in that: The negative pressure device includes a second air pipe (26) and a second valve plate (25). The second valve plate (25) is vertically and tightly slidably mounted inside the vertical cylinder (22), and the upper end surface of the second valve plate (25) is connected to the bottom end of the connecting rod (23). The top end of the connecting rod (23) is rotatably connected to the bottom end of the vertical shaft (21). The connecting rod (23) is also vertically slidably connected to the inside of the vertical cylinder (22) through a horizontal plate (24).

7. The accelerated aging tester for film testing according to claim 6, characterized in that: The space below the second valve plate (25) is connected to the bottom end of the second air tube (26) made of a hose material, and the top end of the second air tube (26) is connected to the cavity below the second suction hole (16) through a hollow lever (19), and the cavity is opened inside the tensioning plate (15).

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