Film surface adhesion testing device and testing method thereof

Abstract

This invention discloses a thin film surface adhesion testing device and method, relating to the field of thin film adhesion testing technology. It includes a base and a testing platform mounted on the base for placing the thin film. A support is mounted on the base, and a lifting device is mounted on the support. A tensile testing device is mounted at the end of the lifting device, and an elastic traction mechanism is mounted at the bottom of the tensile testing device. A porous adsorption device is mounted at the bottom of the elastic traction mechanism, and a pore-filling structure is mounted on the porous adsorption device. In this invention, the thin film is placed on the testing platform, and then the porous adsorption device is driven by the lifting device to adsorb the film before testing its adhesion. The tensile testing device measures the adhesion force. During the test, the pore-filling structure fills the pores of the porous adsorption device to prevent the film from bending or deforming during adsorption or prematurely detaching from the testing platform, thus ensuring the accuracy of the test results.

Description

Technical Field

[0001] This invention relates to the field of film adhesion testing technology, and more specifically to a film surface adhesion testing device and testing method. Background Technology

[0002] A film is a thin, soft, transparent sheet made of plastic, adhesive, rubber, or other materials. Before leaving the factory, the film's adhesion properties need to be tested.

[0003] A utility model patent with publication number CN211347888U discloses a device for detecting film adhesion. Specifically, it includes two supports, with a single fixed plate fixedly mounted on the top of each support. A detection platform is fixedly mounted on the top of the fixed plate, and a film is adhered to the top of the detection platform. A vertical plate is fixedly mounted on one side of the top of the fixed plate, and an mounting plate is fixedly mounted on one side of the vertical plate. An operating block is fixedly mounted on one side of the mounting plate, and the operating block has a chamber. A sliding plate is slidably mounted on the inner walls of both sides of the chamber. A column is fixedly mounted on the bottom of the sliding plate, and the bottom of the column penetrates the bottom inner wall of the chamber and extends below the operating block. A vacuum suction cup is fixedly mounted on the bottom of the column, and the top of the vacuum suction cup is tightly adhered to the top of the film. A detection component is provided on the top of the sliding plate.

[0004] However, the existing technology still has the following problems: when the film is adsorbed by the vacuum suction cup, the middle part of the vacuum suction cup generates negative pressure suction, while its edges lack external force to fix the film. This causes the film to deform or detach from the detection stage below when it is adsorbed and fixed by the vacuum suction cup and is not subjected to upward traction force, thus affecting the accuracy of the test results. Summary of the Invention

[0005] The purpose of this invention is to provide a thin film surface adhesion testing device and method, which solves the technical problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution: A film surface adhesion testing device includes a base and a testing platform mounted on the base for placing the film. A support is mounted on the base, and a lifting device is mounted on the support. A tensile testing device is mounted at the end of the lifting device, and an elastic traction mechanism is mounted at the bottom of the tensile testing device. A porous adsorption device for adsorbing the film is mounted at the bottom of the elastic traction mechanism. The porous adsorption device has a pore-filling structure, which fills the pores in the porous adsorption device and allows airflow to pass through.

[0007] As a preferred embodiment of the present invention, the elastic traction mechanism includes a connecting plate connected to the bottom of the tension detection device, a plurality of springs are uniformly arranged on the lower surface of the connecting plate, the bottom of the plurality of springs are connected to a mounting plate, and the porous adsorption device is arranged on the lower surface of the mounting plate.

[0008] As a preferred embodiment of the present invention, the porous adsorption device includes a box body disposed on the lower surface of the mounting plate, an adsorption base being disposed through the bottom of the box body, and the bottom of the adsorption base extending downward to the outside of the box body. The bottom of the adsorption base is uniformly provided with a plurality of adsorption holes, and each adsorption hole extends upward through the upper surface of the adsorption base and communicates with the inside of the box body. A pump body is connected to the box body through a pipeline, and the pore filling structure is used to fill the plurality of adsorption holes.

[0009] As a preferred embodiment of the present invention, the pore filling structure includes a plurality of columnar sponges that match the adsorption pores, and each of the columnar sponges is connected to a fixing strip at the end facing the lifting device, and each fixing strip is fixed to the upper surface of the adsorption base.

[0010] As a preferred embodiment of the present invention, the columnar sponge body includes a columnar sponge and a fixed housing with openings at both ends, and the columnar sponge is fixed inside the fixed housing. The fixed housing is connected to a fixing strip. Multiple sets of fixing pins are evenly arranged on the inner sidewall of the fixed housing along the axial direction of the columnar sponge, and each fixing pin is inserted into the columnar sponge.

[0011] As a preferred embodiment of the present invention, the fixing housing includes two semi-circular housings, and the two semi-circular housings are symmetrically arranged on the outside of the columnar sponge, and each set of fixing pins is symmetrically arranged on the two semi-circular housings.

[0012] As a preferred embodiment of the present invention, the heights of the multiple fixing pins in the same group are all different.

[0013] The testing method for a thin film surface adhesion testing device includes the following steps: S100: Place the film to be tested on the testing stage to ensure bonding effect; S200, start the lifting device and tensile testing device. The lifting device drives the porous adsorption device to descend until the adsorption base contacts the film surface. At this time, the lifting device stops working, and then the pump body is started to adsorb the film onto the adsorption base. S300, restart the lifting device to drive the porous adsorption device to move upward. The tension detection device detects the tension transmitted by the elastic traction mechanism in real time and records the instantaneous tension when the film leaves the detection stage. At this time, the test is completed.

[0014] Compared with the prior art, the present invention has the following advantages: This invention involves placing a film on a testing platform, then using a lifting device to drive a porous adsorption device to adsorb the film before testing its adhesion. The adhesion is measured using a tensile testing device. During the test, a pore-filling structure fills the pores of the porous adsorption device to prevent the film from bending or deforming when it is adsorbed and fixed, or from prematurely detaching from the testing platform during adsorption, thus ensuring the accuracy of the test results. Attached Figure Description

[0015] To more clearly illustrate the embodiments of the present invention or the technical solutions in 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 merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] Figure 1 A schematic diagram of the overall structure of the thin film surface adhesion testing device provided in this embodiment of the invention. Figure 1 ; Figure 2 A schematic diagram of the overall structure of the thin film surface adhesion testing device provided in this embodiment of the invention. Figure 2 ; Figure 3 A partial structural schematic diagram of the porous adsorption device is provided for embodiments of the present invention. Figure 1 ; Figure 4 A partial structural schematic diagram of the porous adsorption device is provided for embodiments of the present invention. Figure 2 ; Figure 5 A cross-sectional structural schematic diagram of a porous adsorption device is provided for an embodiment of the present invention; Figure 6 A partial structural schematic diagram of the pore-filling structure is provided for an embodiment of the present invention; Figure 7 Provided for embodiments of the present invention Figure 5 The diagram shows an enlarged view of part A.

[0017] The labels in the diagram represent the following: 1. Base; 2. Support; 3. Lifting device; 4. Tensile testing device; 5. Elastic traction mechanism; 6. Porous adsorption device; 7. Pore filling structure; 8. Testing table; 501. Connecting plate; 502. Spring; 503. Mounting plate; 601. Box body; 602. Adsorption base; 603. Adsorption hole; 701. Columnar sponge; 702. Fixing strip; 703. Semi-circular shell; 704. Columnar sponge; 705. Fixing shell; 706. Fixing pin. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] The concepts involved in this application will first be described with reference to the accompanying drawings. It should be noted that the following descriptions of various concepts are only for the purpose of making the content of this application easier to understand and do not constitute a limitation on the scope of protection of this application; furthermore, the embodiments and features in the embodiments of this application can be combined with each other unless otherwise specified. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] like Figures 1 to 7 As shown, the present invention provides a film surface adhesion testing device, including a base 1 and a testing stage 8 disposed on the base 1 for placing the film. A support 2 is disposed on the base 1, and a lifting device 3 is disposed on the support 2. A tensile testing device 4 is disposed at the end of the lifting device 3, and an elastic traction mechanism 5 is disposed at the bottom of the tensile testing device 4. A porous adsorption device 6 for adsorbing the film is disposed at the bottom of the elastic traction mechanism 5. A pore filling structure 7 is disposed on the porous adsorption device 6, and the pore filling structure 7 is used to fill the pores on the porous adsorption device 6 and allows airflow to pass through.

[0021] The elastic traction mechanism 5 includes a connecting plate 501 connected to the bottom of the tension detection device 4. Multiple springs 502 are evenly arranged on the lower surface of the connecting plate 501. The bottom of the multiple springs 502 is connected to a mounting plate 503. The porous adsorption device 6 is arranged on the lower surface of the mounting plate 503.

[0022] In practical use, the film to be tested is placed on the testing platform 8 and adhered to it. Then, the lifting device 3 is activated, which drives the tensile testing device 4 and the elastic traction mechanism 5 to move downwards until the porous adsorption device 6 contacts the film. The lifting device 3 stops, and then the porous adsorption device 6 is activated to adsorb and fix the film onto the porous adsorption device 6. The lifting device 3 is then activated again to drive the porous adsorption device 6 to move upwards. Due to the adhesion of the film, a downward force is generated on the porous adsorption device 6, which is transmitted to the spring 502 through the mounting plate 503, thereby stretching the spring 502 and causing it to deform. The elastic force generated by the deformation of the spring 502 is transmitted to the tensile testing device 4 through the connecting plate 501. The tensile testing device 4 measures the magnitude of the film adhesion in real time. When the film detaches from the testing platform 8, the tensile force value measured by the tensile testing device 4 is the magnitude of the film adhesion.

[0023] In this application, after the porous adsorption device 6 adsorbs and fixes the thin film, the pore filling structure 7 fills the pores on the porous adsorption device 6. Therefore, the thin film will not deform or bend at the pores or detach from the surface of the detection stage 8 when subjected to adsorption force, thereby avoiding any impact on the accuracy of the detection results.

[0024] In this embodiment, both the lifting device 3 and the tension detection device 4 are existing technologies. For example, the lifting device 3 is an electric push rod or a hydraulic push rod, and the tension detection device 4 is a tension sensor installed at the end of the lifting device 3. The value of the tension sensor can be displayed on a connected screen for observation, or the value of the tension sensor can be transmitted to an analysis device such as a computer for summary analysis.

[0025] The porous adsorption device 6 includes a box 601 disposed on the lower surface of the mounting plate 503. An adsorption base 602 is disposed through the bottom of the box 601, and the bottom of the adsorption base 602 extends downward to the outside of the box 601. A plurality of adsorption holes 603 are evenly opened on the bottom of the adsorption base 602, and each adsorption hole 603 extends upward through the upper surface of the adsorption base 602 and communicates with the inside of the box 601. A pump body is connected to the box 601 through a pipeline. A pore filling structure 7 is used to fill the plurality of adsorption holes 603.

[0026] When the adsorption base 602 comes into contact with the upper surface of the film, the pump is activated to evacuate the inside of the housing 601 and draw air downwards from the adsorption base 602 through multiple adsorption holes 603, thereby generating negative pressure suction at the multiple adsorption holes 603. The film is adsorbed and fixed to the lower surface of the adsorption base 602 by the negative pressure suction.

[0027] The pore filling structure 7 includes multiple columnar sponges 701 that match the adsorption holes 603, and each columnar sponge 701 has a fixing strip 702 connected to its end facing the lifting device 3, and each fixing strip 702 is fixed to the upper surface of the adsorption base 602.

[0028] By filling the corresponding adsorption holes 603 with multiple columnar sponges 701, the bottom of the adsorption holes 603 is not hollow. When the film is adsorbed onto the lower surface of the adsorption base 602, the film will not deform or bend at this point due to the support of the columnar sponges 701, and will not fall off the detection stage 8, thus ensuring the accuracy of the detection results. Moreover, the columnar sponges 701 will not damage the film.

[0029] The fixing strip 702 is used to fix the columnar sponge 701, ensuring the stability of the columnar sponge 701 within the adsorption hole 603 and preventing the columnar sponge 701 from detaching upward from the adsorption hole 603.

[0030] The columnar sponge 701 includes a columnar sponge 704 and a fixed housing 705 with openings at both ends. The columnar sponge 704 is fixed inside the fixed housing 705. The fixed housing 705 is connected to the fixing strip 702. Multiple sets of fixing pins 706 are evenly arranged on the inner side wall of the fixed housing 705 along the axial direction of the columnar sponge 704, and each fixing pin 706 is inserted into the columnar sponge 704.

[0031] Since the columnar sponge 704 is relatively soft and has a certain length, it may deform within the adsorption hole 603. Therefore, by wrapping the columnar sponge 704 with the fixing housing 705 and then installing it into the adsorption hole 603, the installation difficulty is reduced. Furthermore, multiple fixing pins 706 are inserted into the columnar sponge 704 from the side, thereby restricting the columnar sponge 704 from rotating within the fixing housing 705 or moving axially along the adsorption hole 603, ensuring the stability of the columnar sponge 704 during use. At the same time, the fixing housing 705 is fixed by the fixing strip 702, ensuring the stability of the entire columnar sponge body 701.

[0032] Furthermore, the fixing strip 702 consists of two symmetrical strips, which are symmetrically arranged at the end edge of the fixing housing 705 to avoid affecting the airflow effect of the columnar sponge 704.

[0033] Furthermore, the end of the columnar sponge 704 that contacts the film extends to the end of the fixed housing 705, and the diameter of the end of the columnar sponge 704 that contacts the film is larger than that of the fixed housing 705 and matches the adsorption hole 603, so that the end of the columnar sponge 704 is supported by the end of the fixed housing 705, and also avoids the fixed housing 705 from contacting the film. The columnar sponge 704 is relatively soft, which avoids damage to the film.

[0034] The fixing housing 705 includes two semi-circular housings 703, and the two semi-circular housings 703 are symmetrically arranged on the outside of the columnar sponge 704. Each set of fixing pins 706 is symmetrically arranged on the two semi-circular housings 703.

[0035] Two semi-circular shells 703 enclose the columnar sponge 704 inside, and the two semi-circular shells 704 are fixed together by means of adhesive or welding to form a fixed shell 705, which facilitates the assembly and installation of the columnar sponge 701.

[0036] The heights of multiple 706 fixing pins in the same group are all different.

[0037] This avoids interference between the fixing pins 706 and allows the fixing pins 706 to be inserted deeper into the cylindrical sponge 704.

[0038] This invention also provides a testing method for a thin film surface adhesion testing device, comprising the following steps: S100, place the film to be tested on the testing stage 8 to ensure the bonding effect; S200, start the lifting device 3 and the tensile testing device 4. The lifting device 3 drives the porous adsorption device 6 to descend to the adsorption base 602 and contact the film surface. At this time, the lifting device 3 stops working, and then the pump body is started to adsorb the film onto the adsorption base 602. S300, restart the lifting device 3 to drive the porous adsorption device 6 to move upward. The tension detection device 4 detects the tension transmitted by the elastic traction mechanism 5 in real time and records the instantaneous tension when the film leaves the detection stage 8. At this time, the test is completed.

[0039] The embodiments and / or implementation methods described above are merely preferred embodiments and / or implementation methods for implementing the technology of the present invention, and are not intended to limit the implementation methods of the technology of the present invention in any way. Any person skilled in the art can make some modifications or alterations to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as the technology or embodiments that are substantially the same as the present invention. This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A film surface adhesion testing device characterized by, The device includes a base (1) and a testing platform (8) set on the base (1) for placing a film. A support (2) is provided on the base (1). A lifting device (3) is provided on the support (2). A tensile testing device (4) is provided at the end of the lifting device (3). An elastic traction mechanism (5) is provided at the bottom of the tensile testing device (4). A porous adsorption device (6) for adsorbing the film is provided at the bottom of the elastic traction mechanism (5). A pore filling structure (7) is provided on the porous adsorption device (6). The pore filling structure (7) is used to fill the pores on the porous adsorption device (6) and allows airflow to pass through.

2. The thin film surface adhesion test device of claim 1, wherein, The elastic traction mechanism (5) includes a connecting plate (501) connected to the bottom of the tension detection device (4). Multiple springs (502) are evenly arranged on the lower surface of the connecting plate (501). The bottom of the multiple springs (502) is connected to a mounting plate (503). The porous adsorption device (6) is arranged on the lower surface of the mounting plate (503).

3. The thin film surface adhesion test device of claim 2, wherein, The porous adsorption device (6) includes a box (601) disposed on the lower surface of the mounting plate (503). An adsorption base (602) is disposed through the bottom of the box (601), and the bottom of the adsorption base (602) extends downward to the outside of the box (601). A plurality of adsorption holes (603) are evenly opened on the bottom of the adsorption base (602), and each adsorption hole (603) extends upward through the upper surface of the adsorption base (602) and communicates with the inside of the box (601). A pump body is connected to the box (601) through a pipeline. The pore filling structure (7) is used to fill the plurality of adsorption holes (603).

4. The thin film surface adhesion test device of claim 3, wherein, The pore filling structure (7) includes a plurality of columnar sponges (701) that match the adsorption holes (603), and each columnar sponge (701) is connected to a fixing strip (702) at the end facing the lifting device (3), and each fixing strip (702) is fixed to the upper surface of the adsorption base (602).

5. The thin film surface adhesion testing device according to claim 4, characterized in that, The columnar sponge body (701) includes a columnar sponge (704) and a fixed housing (705) with openings at both ends. The columnar sponge (704) is fixed inside the fixed housing (705). The fixed housing (705) is connected to a fixing strip (702). Multiple sets of fixing pins (706) are evenly arranged on the inner sidewall of the fixed housing (705) along the axial direction of the columnar sponge (704), and each fixing pin (706) is inserted into the columnar sponge (704).

6. The thin film surface adhesion testing device according to claim 5, characterized in that, The fixing housing (705) includes two semi-circular housings (703), and the two semi-circular housings (703) are symmetrically arranged on the outside of the columnar sponge (704). Each set of fixing pins (706) is symmetrically arranged on the two semi-circular housings (703).

7. The thin film surface adhesion testing device according to claim 5, characterized in that, The heights of the multiple fixing pins (706) in the same group are all different.

8. A test method applied to the film surface adhesion testing apparatus according to any one of claims 1-7, characterized in that, Including the following steps: S100, place the film to be tested on the testing stage (8) to ensure the bonding effect; S200, start the lifting device (3) and the tensile testing device (4). The lifting device (3) drives the porous adsorption device (6) to descend to the adsorption base (602) and contact the film surface. At this time, the lifting device (3) stops working, and then the pump body is started to adsorb the film onto the adsorption base (602). S300, restart the lifting device (3) to drive the porous adsorption device (6) to move upward. The tension detection device (4) detects the tension transmitted by the elastic traction mechanism (5) in real time and records the instantaneous tension when the film leaves the detection table (8). At this time, the test is completed.

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