A corrosion resistance testing device for PET release film

Abstract

This invention belongs to the technical field of testing devices, specifically disclosing a corrosion resistance testing device for PET release films. The device includes a testing cabinet and a storage cabinet, with the inner cavities of the testing cabinet and storage cabinet connected. A hanging structure is fixed to the testing cabinet, on which the test film is hung. The interior of the testing cabinet is connected to a camera detection structure, a fogging structure, and a camera inspection structure. A support roller rotates above the fogging structure inside the testing cabinet. A drag roller and a transfer roller rotate near the camera detection structure inside the testing cabinet. A pull roller rotates near the drag roller inside the testing cabinet. The drag roller and transfer roller are distributed relative to each other around the camera detection structure. Dividing strips are fixed to the inner wall of the testing cabinet. This testing device can simultaneously perform salt corrosion resistance testing, aging testing, scratch resistance testing, and puncture resistance testing on the test film. The test information can be automatically transmitted to an external computer, improving the efficiency of corrosion resistance testing.

Description

Technical Field

[0001] This invention belongs to the field of testing device technology, and specifically discloses a PET release film corrosion resistance testing device. Background Technology

[0002] PET release film is a commonly used material in heat transfer printing. The substrate is PET, which is coated with silicone oil, so it is also called silicone oil film. Before leaving the factory, the salt spray corrosion resistance of PET release film needs to be tested.

[0003] Currently, the commercially available method for testing the salt spray corrosion resistance of PET release films typically involves placing the PET release film in a sealed container, then spraying a prepared salt-containing liquid onto the PET release film as a salt spray. After the test time has elapsed, the spraying of salt spray is stopped, and the changes on the surface of the PET release film are observed to test its mechanical properties and thus determine its salt spray corrosion resistance.

[0004] However, while this type of PET release film testing device does achieve good corrosion resistance testing results for PET release films in actual use, it still has some shortcomings, such as:

[0005] When testing PET release films by placing them inside sealed containers, the salt sprayed PET release films still need to be transferred to the PET release film testing device. This causes the PET release films to come into contact with the external environment, increasing the instability of the PET release film testing. At the same time, the salt sprayed PET release films are also prone to contaminating the external environment during transfer, which may cause harm to the staff. When PET release films need to be tested in multiple environments, the staff need to be equipped with multiple sealed test containers and then transfer the PET release films into multiple containers. This not only increases the testing cycle of PET release films, but also affects the testing accuracy of PET release films, thus reducing the testing efficiency of PET release films. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide a PET release film corrosion resistance testing device to solve the problems mentioned above.

[0007] To achieve the above objectives, the present invention provides a PET release film corrosion resistance testing device, including a testing cabinet and a storage cabinet, wherein the inner cavity of the testing cabinet and the inner cavity of the storage cabinet are connected, and a hanging structure is fixed on the testing cabinet, on which the testing film is hung.

[0008] The test cabinet is internally connected to a camera detection structure, an atomizing structure, and a camera inspection structure. Inside the test cabinet, above the atomizing structure, there is a rotating support roller. Inside the test cabinet, near the camera detection structure, there are rotating drag rollers and transfer rollers. Inside the test cabinet, near the drag rollers, there are rotating pull rollers. The drag rollers and transfer rollers are distributed relative to each other with the camera detection structure as the center.

[0009] The inner wall of the test cabinet is fixed with a dividing strip, which is an L-shaped plate structure. The dividing strip divides the inner cavity of the test cabinet into two independent cavities. The atomizing structure is distributed inside the test cabinet at the upper part of the dividing strip, and the camera detection structure is distributed inside the test cabinet at the lower part of the dividing strip.

[0010] In the above technical solution, the test film is further wound around the support roller, pull roller, drag roller and transfer roller. The working ends of the camera detection structure, atomization structure and camera inspection structure are opposite to the test film. The inner cavity of the storage cabinet has a winding rod that rotates near the transfer roller. An external motor is connected to the storage cabinet near the winding rod. The output end of the external motor is fixed to the winding rod. The output end of the external motor drives the winding rod to wind up the test film.

[0011] In the above technical solution, the middle part of the test cabinet is connected to an air extraction structure, the lower part of the test cabinet is connected to a water extraction structure, the water extraction structure is distributed on the test cabinet below the pull roller, and the bottom wall of the test cabinet and the storage cabinet is fixed with an inclined plate, the part of the inclined plate near the water extraction structure is lower than the other parts of the inclined plate.

[0012] In the above technical solution, a filter box is further connected to the upper side of one side of the storage cabinet, the filter box is distributed above the side of the winding rod, and a controller is connected to the storage cabinet.

[0013] In the above technical solution, further, an auxiliary heating structure is fixed on the dividing strip in the lower inner cavity of the test cabinet. The working end of the auxiliary heating structure is opposite to the test membrane, and the auxiliary heating structure is located inside the test cabinet near the pull roller.

[0014] In the above technical solution, further, a support rod is rotatably located inside the test cabinet between the support roller and the pull roller. A bearing is sleeved on the support rod, and the outer ring of the bearing is fixed to the test cabinet. An installation tube is sleeved on the support rod, and pressure strips are fixed at equal intervals on the outer wall of the installation tube. The pressure strips abut against the test membrane.

[0015] In the above technical solution, the pressure strip is further described as a strip structure, and a rough surface is provided on the side of the pressure strip near the test membrane. The rough surface is an arc-shaped rough surface structure on the pressure strip.

[0016] In the above technical solution, the outer wall of the support rod is provided with snap-fit ​​grooves at equal intervals, and the inner wall of the mounting tube is fixed with snap-fit ​​posts at equal intervals, and the snap-fit ​​posts on the mounting tube are inserted into the snap-fit ​​grooves.

[0017] In the above technical solution, further, a mounting shell is fixed on the pressure strip, the mounting shell is embedded inside the mounting tube, a piercing head is inserted into the mounting shell, the piercing head and the pressure strip pass through each other, a limit plate is fixed at one end of the piercing head inserted into the mounting shell, and a compression spring is fixed between the limit plate and the inner wall of the mounting shell.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The camera inspection structure in this testing device can check the product quality of the test membrane in real time, which facilitates the appearance comparison between the tested membrane and the untested membrane after subsequent testing. The atomizing structure can spray the adjusted salt-containing liquid onto the test membrane in a misting manner, thereby realizing the salt spray corrosion resistance test of the test membrane.

[0020] 2. This testing device can simultaneously perform salt corrosion resistance testing, aging testing, scratch resistance testing, and puncture resistance testing on the test membrane. The test information can be automatically transmitted to an external computer, which can improve the efficiency of corrosion resistance testing of the test membrane.

[0021] 3. When this testing device performs corrosion resistance tests on the test membrane, the device is divided into different test spaces. The test methods in each test space do not affect each other, which can improve the rigor of the test membrane.

[0022] 4. When the testing device performs corrosion resistance testing on the test membrane, the device is equipped with an automatic discharge structure, which can quickly discharge contaminants inside the device, making it convenient for staff to maintain the internal components. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 for Figure 1 Cross-sectional structural diagram;

[0025] Figure 3 This is a diagram showing the connection structure between the mounting tube and the support rod in this invention;

[0026] Figure 4 This is a diagram showing the connection structure between the mounting shell and the pressure strip in this invention;

[0027] Figure 5 This is a diagram showing the connection structure between the bearing and the support rod in this invention;

[0028] Figure 6 This is a diagram showing the connection structure between the piercing head and the mounting shell in this invention;

[0029] Figure 7 for Figure 2 Enlarged view of B in the middle;

[0030] Figure 8 for Figure 2 A magnified view of A in the middle.

[0031] 1. Test cabinet; 11. Dividing strip; 12. Support roller; 13. Pumping structure; 14. Inclined plate; 15. Winding rod; 16. Air extraction structure; 17. Pulling roller; 18. Driving roller; 19. Transfer roller; 2. Test membrane; 3. Support rod; 31. Pressure strip; 32. Puncture head; 33. Mounting tube; 34. Bearing; 35. Snap-fit ​​groove; 36. Textured surface; 37. Mounting shell; 38. Compression spring; 39. Limiting plate; 4. Filter box; 5. Storage cabinet; 51. Controller; 6. Camera detection structure; 7. Camera inspection structure; 8. Hanging structure; 9. Atomizing structure; 10. Auxiliary heating structure. Detailed Implementation

[0032] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0034] Example 1: Please refer to Figure 1-8 As shown, the present invention provides a technical solution:

[0035] The present invention is a corrosion resistance testing device for PET release film, including a test cabinet 1 and a storage cabinet 5. The inner cavity of the test cabinet 1 and the inner cavity of the storage cabinet 5 are connected. A hanging structure 8 is fixed on the test cabinet 1, and a test film 2 is hung on the hanging structure 8.

[0036] The test cabinet 1 is internally connected to a camera detection structure 6, an atomizing structure 9, and a camera inspection structure 7. Inside the test cabinet 1, above the atomizing structure 9, there is a rotating support roller 12. Inside the test cabinet 1, near the camera detection structure 6, there are rotating drag rollers 18 and transfer rollers 19. Inside the test cabinet 1, near the drag rollers 18, there is a rotating pull roller 17. The drag rollers 18 and transfer rollers 19 are distributed relative to each other with the camera detection structure 6 as the center. Both the camera detection structure 6 and the camera inspection structure 7 are connected to an external computer.

[0037] The camera inspection structure 7 can inspect the product quality of the test membrane 2 in real time, which facilitates the appearance comparison between the test membrane 2 after testing and the untested test membrane 2. The atomizing structure 9 can spray the adjusted salt-containing liquid onto the test membrane 2 in a misting manner, thereby enabling the test membrane 2 to undergo salt spray corrosion resistance testing.

[0038] When the test membrane 2 is subjected to salt spray corrosion resistance test, the support roller 12, pull roller 17, drag roller 18 and transfer roller 19 can support the test membrane 2, which facilitates the camera detection structure 6 to detect the test membrane 2 for salt spray corrosion resistance test.

[0039] The inner wall of the test cabinet 1 is fixed with a dividing strip 11. The dividing strip 11 is an L-shaped plate structure. The dividing strip 11 divides the inner cavity of the test cabinet 1 into two independent cavities. The atomizing structure 9 is distributed inside the test cabinet 1 and located at the upper part of the dividing strip 11. The camera detection structure 6 is distributed inside the test cabinet 1 and located at the lower part of the dividing strip 11.

[0040] The dividing strip 11 divides the inner cavity of the test cabinet 1 into two independent cavities. This can prevent the salt spray generated during the salt spray corrosion test of the test membrane 2 by the atomizing structure 9 from affecting the detection of the test membrane 2 by the camera detection structure 6 after the test. At the same time, it can also prevent the salt spray from affecting the normal use of the camera detection structure 6 and extend the service life of the camera detection structure 6.

[0041] Example 2: Please refer to Figure 1-8 As shown, based on Embodiment 1, the present invention provides a technical solution. Unlike Embodiment 1, when the test membrane 2 is transferred to the pull roller 17 in this embodiment, the lifted test membrane 2 will be transferred downward inside the test cabinet 1. At this time, the atomizing structure 9 can transfer the salt-containing liquid to the test membrane 2 through atomization. This can realize that the test membrane 2 drives the flow of the atomized salt-containing liquid, which makes it easier for the atomized salt-containing liquid to contact the test membrane 2 evenly.

[0042] The test membrane 2 is wound around the support roller 12, pull roller 17, drag roller 18 and transfer roller 19. The working ends of the camera detection structure 6, atomizing structure 9 and camera inspection structure 7 are opposite to the test membrane 2. The inner cavity of the storage cabinet 5 has a winding rod 15 that rotates near the transfer roller 19. An external motor is connected to the storage cabinet 5 near the winding rod 15. The output end of the external motor is fixed to the winding rod 15. The output end of the external motor drives the winding rod 15 to wind up the test membrane 2.

[0043] When the support roller 12 supports the test membrane 2, the test membrane 2 will be lifted upward inside the test cabinet 1. When the test membrane 2 is transferred to the pull roller 17, the lifted test membrane 2 will be transferred downward inside the test cabinet 1. At this time, the atomizing structure 9 can transfer the salt-containing liquid to the test membrane 2 through atomization. This can realize that the test membrane 2 drives the flow of the atomized salt-containing liquid, which makes it easier for the atomized salt-containing liquid to contact the test membrane 2 evenly.

[0044] After the test membrane 2 is tested by the atomized salt liquid, the output end of the external motor can be wound up by the winding rod 15, which makes it easier for the staff to process the test membrane 2 after the test.

[0045] Since the drag roller 18 and the transfer roller 19 are relatively distributed with the camera detection structure 6 as the center, the drag roller 18 and the transfer roller 19 can unfold the test film 2 after testing, which makes it easier for the camera detection structure 6 to detect the test film 2 after testing.

[0046] Example 3: Please refer to Figure 1-8 As shown, based on Embodiment 2, the present invention provides a technical solution. Unlike Embodiment 2, in this embodiment, the auxiliary heating structure 10 is located on the dividing strip 11 between the support roller 12 and the pulling roller 17. The test membrane 2 located between the support roller 12 and the pulling roller 17 is in a nearly vertical state. This allows the heat transferred by the auxiliary heating structure 10 to the test membrane 2 to drive the salt-containing liquid to evaporate rapidly. The evaporated salt-containing liquid will be located in the upper part of the test cabinet 1, thereby avoiding a large amount of salt-containing liquid in the lower part of the test cabinet 1. This allows the space in the upper part of the test cabinet 1 to simulate the environment in which the test membrane 2 is used.

[0047] The middle part of the test cabinet 1 is connected to the air extraction structure 16, and the lower part of the test cabinet 1 is connected to the water extraction structure 13. The water extraction structure 13 is distributed on the test cabinet 1 and located below the pull roller 17. The bottom wall of the inner cavity of the test cabinet 1 and the storage cabinet 5 is fixed with an inclined plate 14. The part of the inclined plate 14 near the water extraction structure 13 is lower than the other parts of the inclined plate 14.

[0048] The extraction structure 16 operates intermittently. The extraction structure 16 can be a commercially available extraction device. In this document, its function is to drive the excess atomized salt liquid inside the test cabinet 1 to be discharged to the outside. An inclined plate 14 is fixed on the bottom wall of the inner cavity of the test cabinet 1 and the storage cabinet 5, which can guide the salt liquid separated on the test membrane 2 to the extraction structure 13 when the winding rod 15 winds up the test membrane 2.

[0049] A filter box 4 is connected to the top of one side of the storage cabinet 5. The filter box 4 is located above one side of the winding rod 15. A controller 51 is connected to the storage cabinet 5.

[0050] The filter box 4 is filled with a filter cotton core. When the suction structure 16 drives the atomized salt liquid to be discharged to the outside, the inside of the test cabinet 1 is under negative pressure. At this time, the outside air will pass through the filter box 4 and enter the inside of the test cabinet 1. The filter cotton core inside the filter box 4 can filter the outside air, thereby preventing impurities in the outside air from contacting the test membrane 2. The controller 51 can control the operation of the external motor on the suction structure 16 and the winding rod 15.

[0051] An auxiliary heating structure 10 is fixed on the dividing strip 11 in the lower inner cavity of the test cabinet 1. The working end of the auxiliary heating structure 10 is opposite to the test membrane 2. The auxiliary heating structure 10 is located inside the test cabinet 1 near the pull roller 17.

[0052] The portion of the dividing strip 11 near the pulling roller 17 is inclined downwards, which allows the liquefied salt liquid on the dividing strip 11 to be discharged to the pumping structure 13. The auxiliary heating structure 10 can be selected from existing commercial structures. In this document, it plays the role of transferring heat to the test membrane 2, simulating the test membrane 2 being in a high-temperature environment, and thus simulating the aging treatment of the test membrane 2 in a high-temperature environment.

[0053] Since the auxiliary heating structure 10 is located on the dividing strip 11 between the support roller 12 and the pulling roller 17, and the test membrane 2 located between the support roller 12 and the pulling roller 17 is in a nearly vertical state, the heat transferred by the auxiliary heating structure 10 to the test membrane 2 can drive the salt-containing liquid to evaporate quickly. The evaporated salt-containing liquid will be located in the upper part of the test cabinet 1, thereby avoiding a large amount of salt-containing liquid in the lower part of the test cabinet 1, and realizing that the space in the upper part of the test cabinet 1 simulates the environment in which the test membrane 2 is used.

[0054] Example 4: Please refer to Figure 1-8 As shown, based on Embodiment 3, the present invention provides a technical solution. Unlike Embodiment 3, in this embodiment, the pressure strip 31 scratches the surface of the test membrane 2 through the rough surface 36, while the puncture head 32 squeezes the test membrane 2. The squeezing and scratching information of the test membrane 2 will be detected by the camera detection structure 6, so that the staff can understand whether the corrosion resistance of the test membrane 2 meets the factory requirements.

[0055] Inside the test cabinet 1, there is a rotating support rod 3 located between the support roller 12 and the pull roller 17. A bearing 34 is sleeved on the support rod 3. The outer ring of the bearing 34 is fixed to the test cabinet 1. An installation tube 33 is sleeved on the support rod 3. A pressure strip 31 is fixed at equal intervals on the outer wall of the installation tube 33. The pressure strip 31 abuts against the test membrane 2.

[0056] When the test membrane 2 is wound up by the winding rod 15, the tension of the test membrane 2 itself will drive the support rod 3 to rotate on the bearing 34 through the pressure strip 31. At this time, the pressure strip 31 will contact the test membrane 2 to realize the scratch resistance test of the test membrane 2. The scratch resistance of the test membrane 2 will be detected by the camera detection structure 6, so that the staff can understand the scratch resistance performance of the test membrane 2.

[0057] The pressure strip 31 has a strip-shaped structure. A rough surface 36 is provided on the side of the pressure strip 31 near the test membrane 2. The rough surface 36 is an arc-shaped rough surface structure on the pressure strip 31.

[0058] The pressure strip 31 scratches the surface of the test membrane 2 through the rough surface 36. When the rough surface 36 slides against the test membrane 2, scratches will be left on the test membrane 2. The camera detection structure 6 will detect the depth of the scratches on the test membrane 2. At the same time, the camera detection structure 6 will also detect information about the corrosion of the test membrane 2 by the salt liquid and information about the thermal aging of the test membrane 2. The thermal condition of the test membrane 2 mainly comes from the heat transferred by the auxiliary heating structure 10. Then, this information is transmitted to the internal computer of the external computer. The external computer has an information analysis program installed inside. After this information is analyzed and processed by the information program, the staff can understand the corrosion resistance of the test membrane 2.

[0059] The outer wall of the support rod 3 is provided with equally spaced snap-fit ​​grooves 35, and the inner wall of the mounting tube 33 is fixed with equally spaced snap-fit ​​posts. The snap-fit ​​posts on the mounting tube 33 are inserted into the inside of the snap-fit ​​grooves 35.

[0060] When the locking pin on the mounting tube 33 is inserted into the locking groove 35, it can prevent the mounting tube 33 from easily separating from the support rod 3, and realize that the mounting tube 33 can stably drive the piercing head 32 and the pressing strip 31 to be installed on the support rod 3.

[0061] A mounting shell 37 is fixed on the pressure strip 31. The mounting shell 37 is embedded inside the mounting tube 33. A piercing head 32 is inserted into the mounting shell 37. The piercing head 32 and the pressure strip 31 pass through each other. A limiting plate 39 is fixed to one end of the piercing head 32 that is inserted into the mounting shell 37. A compression spring 38 is fixed between the limiting plate 39 and the inner wall of the mounting shell 37.

[0062] When the test membrane 2 comes into contact with the rough surface 36 of the pressure strip 31, the test membrane 2 will squeeze the puncture head 32 through its own tension. During this process, the compression spring 38 will work to store force. The repulsive force generated when the compression spring 38 stores force will drive the puncture head 32 to squeeze the test membrane 2. If the corrosion of the test membrane 2 is severe, the puncture head 32 will puncture the test membrane 2. The information of the puncture of the test membrane 2 will be detected by the camera detection structure 6, so that the staff can understand that the test membrane 2 does not meet the requirements of the factory.

[0063] When the puncture head 32 comes into contact with the test membrane 2, the test membrane 2 will vibrate. This will cause the salt liquid on the test membrane 2 to vibrate, thus avoiding excessive salt liquid on the test membrane 2 during testing. This will facilitate the detection of corrosion information of the test membrane 2 by the camera detection structure 6.

[0064] Working principle: When the test membrane 2 is subjected to salt spray corrosion resistance test, the support roller 12, pull roller 17, drag roller 18 and transfer roller 19 can support the test membrane 2, which facilitates the camera detection structure 6 to detect the test membrane 2 for salt spray corrosion resistance test.

[0065] The camera inspection structure 7 can inspect the product quality of the test membrane 2 in real time, which facilitates the appearance comparison between the test membrane 2 after testing and the untested test membrane 2. The atomizing structure 9 can spray the adjusted salt-containing liquid onto the test membrane 2 in a misting manner, thereby enabling the test membrane 2 to undergo salt spray corrosion resistance testing.

[0066] The dividing strip 11 divides the inner cavity of the test cabinet 1 into two independent cavities. This can prevent the salt spray generated during the salt spray corrosion test of the test membrane 2 by the atomizing structure 9 from affecting the detection of the test membrane 2 by the camera detection structure 6 after the test. At the same time, it can also prevent the salt spray from affecting the normal use of the camera detection structure 6 and extend the service life of the camera detection structure 6.

[0067] When the support roller 12 supports the test membrane 2, the test membrane 2 will be lifted upward inside the test cabinet 1. When the test membrane 2 is transferred to the pull roller 17, the lifted test membrane 2 will be transferred downward inside the test cabinet 1. At this time, the atomizing structure 9 can transfer the salt-containing liquid to the test membrane 2 through atomization. This can realize that the test membrane 2 drives the flow of the atomized salt-containing liquid, which makes it easier for the atomized salt-containing liquid to contact the test membrane 2 evenly.

[0068] After the test membrane 2 is tested by the atomized salt liquid, the output end of the external motor can be wound up by the winding rod 15, which makes it easier for the staff to process the test membrane 2 after the test.

[0069] Since the drag roller 18 and the transfer roller 19 are relatively distributed with the camera detection structure 6 as the center, the drag roller 18 and the transfer roller 19 can unfold the test film 2 after testing, which makes it easier for the camera detection structure 6 to detect the test film 2 after testing.

[0070] The extraction structure 16 operates intermittently. The extraction structure 16 can be a commercially available extraction device. In this document, its function is to drive the excess atomized salt liquid inside the test cabinet 1 to be discharged to the outside. An inclined plate 14 is fixed on the bottom wall of the inner cavity of the test cabinet 1 and the storage cabinet 5, which can guide the salt liquid separated on the test membrane 2 to the extraction structure 13 when the winding rod 15 winds up the test membrane 2.

[0071] The filter box 4 is filled with a filter cotton core. When the air extraction structure 16 drives the atomized salt liquid to be discharged to the outside, the inside of the test cabinet 1 is under negative pressure. At this time, the outside air will pass through the filter box 4 and enter the inside of the test cabinet 1. The filter cotton core inside the filter box 4 can filter the outside air, thereby preventing impurities in the outside air from contacting the test membrane 2.

[0072] The portion of the dividing strip 11 near the pulling roller 17 is inclined downwards, which allows the liquefied salt liquid on the dividing strip 11 to be discharged to the pumping structure 13. The auxiliary heating structure 10 can be selected from existing commercial structures. In this document, it plays the role of transferring heat to the test membrane 2, simulating the test membrane 2 being in a high-temperature environment, and thus simulating the aging treatment of the test membrane 2 in a high-temperature environment.

[0073] Since the auxiliary heating structure 10 is located on the dividing strip 11 between the support roller 12 and the pulling roller 17, and the test membrane 2 located between the support roller 12 and the pulling roller 17 is in a nearly vertical state, the heat transferred by the auxiliary heating structure 10 to the test membrane 2 can drive the salt-containing liquid to evaporate quickly. The evaporated salt-containing liquid will be located in the upper part of the test cabinet 1, thereby avoiding a large amount of salt-containing liquid in the lower part of the test cabinet 1, and realizing that the space in the upper part of the test cabinet 1 simulates the environment in which the test membrane 2 is used.

[0074] When the test membrane 2 is wound up by the winding rod 15, the tension of the test membrane 2 itself will drive the support rod 3 to rotate on the bearing 34 through the pressure strip 31. At this time, the pressure strip 31 will contact the test membrane 2 to realize the scratch resistance test of the test membrane 2. The scratch resistance of the test membrane 2 will be detected by the camera detection structure 6, which will help the staff to understand the scratch resistance of the test membrane 2.

[0075] The pressure strip 31 scratches the surface of the test membrane 2 through the rough surface 36. When the rough surface 36 slides against the test membrane 2, scratches will be left on the test membrane 2. The camera detection structure 6 will detect the depth of the scratches on the test membrane 2. At the same time, the camera detection structure 6 will also detect information on the corrosion of the test membrane 2 by the salt liquid and information on the thermal aging of the test membrane 2. The thermal condition of the test membrane 2 mainly comes from the heat transferred by the auxiliary heating structure 10. Then, this information is transmitted to the internal internal computer of the external computer. The external computer has an information analysis program installed inside. After this information is analyzed and processed by the information program, the staff can understand the corrosion resistance of the test membrane 2.

[0076] When the test membrane 2 comes into contact with the rough surface 36 of the pressure strip 31, the test membrane 2 will squeeze the puncture head 32 through its own tension. During this process, the compression spring 38 will work to store force. The repulsive force generated when the compression spring 38 stores force will drive the puncture head 32 to squeeze the test membrane 2. If the corrosion of the test membrane 2 is severe, the puncture head 32 will puncture the test membrane 2. The information of the puncture of the test membrane 2 will be detected by the camera detection structure 6, so that the staff can understand that the test membrane 2 does not meet the requirements of the factory.

[0077] When the puncture head 32 comes into contact with the test membrane 2, this part of the test membrane 2 will vibrate slightly. This will cause the salt liquid on the test membrane 2 to shake, thus avoiding the presence of too much salt liquid on the test membrane 2 during testing. This will facilitate the detection of corrosion information of the test membrane 2 by the camera detection structure 6.

[0078] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A PET release film corrosion resistance testing device, comprising a testing cabinet (1) and a storage cabinet (5), characterized in that: The inner cavity of the test cabinet (1) is connected to the inner cavity of the storage cabinet (5). A hanging structure (8) is fixed on the test cabinet (1), and a test membrane (2) is hung on the hanging structure (8). The test cabinet (1) is internally connected to a camera detection structure (6), an atomizing structure (9), and a camera inspection structure (7). Inside the test cabinet (1), above the atomizing structure (9), there is a support roller (12) that rotates. Inside the test cabinet (1), near the camera detection structure (6), there is a drag roller (18) and a transfer roller (19) that rotate. Inside the test cabinet (1), near the drag roller (18), there is a pull roller (17) that rotates. The drag roller (18) and the transfer roller (19) are distributed relative to each other with the camera detection structure (6) as the center. The inner wall of the test cabinet (1) is fixed with a dividing strip (11). The dividing strip (11) is an L-shaped plate structure. The dividing strip (11) divides the inner cavity of the test cabinet (1) into two independent cavities. The atomizing structure (9) is distributed inside the test cabinet (1) and located at the upper part of the dividing strip (11). The camera detection structure (6) is distributed inside the test cabinet (1) and located at the lower part of the dividing strip (11). The test membrane (2) is wound around the support roller (12), pull roller (17), drag roller (18) and transfer roller (19). The working ends of the camera detection structure (6), atomization structure (9) and camera inspection structure (7) are opposite to the test membrane (2). The inner cavity of the storage cabinet (5) is rotated with a winding rod (15) near the transfer roller (19). An external motor is connected to the storage cabinet (5) near the winding rod (15). The output end of the external motor is fixed to the winding rod (15). The output end of the external motor drives the winding rod (15) to wind up the test membrane (2). An auxiliary heating structure (10) is fixed on the dividing strip (11) in the lower inner cavity of the test cabinet (1). The working end of the auxiliary heating structure (10) is opposite to the test membrane (2). The auxiliary heating structure (10) is located inside the test cabinet (1) near the pull roller (17). Inside the test cabinet (1), there is a support rod (3) that rotates between the support roller (12) and the pull roller (17). A bearing (34) is sleeved on the support rod (3). The outer ring of the bearing (34) is fixed to the test cabinet (1). An installation tube (33) is sleeved on the support rod (3). A pressure strip (31) is fixed at equal intervals on the outer wall of the installation tube (33). The pressure strip (31) abuts against the test membrane (2). The pressure strip (31) is a strip-shaped structure. The side of the pressure strip (31) near the test membrane (2) is provided with a rough surface (36). The rough surface (36) is an arc-shaped rough surface structure on the pressure strip (31). The outer wall of the support rod (3) is provided with equal-spaced snap-fit ​​grooves (35), and the inner wall of the mounting tube (33) is fixed with equal-spaced snap-fit ​​posts. The snap-fit ​​posts on the mounting tube (33) are inserted into the snap-fit ​​grooves (35). A mounting shell (37) is fixed on the pressure strip (31). The mounting shell (37) is embedded inside the mounting tube (33). A piercing head (32) is inserted into the mounting shell (37). The piercing head (32) and the pressure strip (31) pass through each other. A limiting plate (39) is fixed to one end of the piercing head (32) inserted into the mounting shell (37). A compression spring (38) is fixed between the limiting plate (39) and the inner wall of the mounting shell (37).

2. The PET release film corrosion resistance testing device according to claim 1, characterized in that, The middle part of the test cabinet (1) is connected to an air extraction structure (16), and the lower part of the test cabinet (1) is connected to a water extraction structure (13). The water extraction structure (13) is distributed on the test cabinet (1) and located below the pull roller (17). The bottom wall of the inner cavity of the test cabinet (1) and the storage cabinet (5) is fixed with an inclined plate (14). The part of the inclined plate (14) near the water extraction structure (13) is lower than the other parts of the inclined plate (14).

3. The PET release film corrosion resistance testing device according to claim 1, characterized in that, A filter box (4) is connected to the top of one side of the storage cabinet (5). The filter box (4) is located above one side of the winding rod (15). A controller (51) is connected to the storage cabinet (5).

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