Protective film optical performance detection device based on spectral analysis

Abstract

The invention discloses a protective film optical performance detection device based on spectral analysis, and belongs to the technical field of optical detection, a detection table is used for placing a protective film to be detected, a connecting frame is rotatably arranged on one side of the detection table through a driving part, an adjusting mechanism is mounted on the connecting frame, and an optical detector is rotatably arranged on the adjusting mechanism. The adjusting mechanism comprises a mounting seat, the mounting seat is fixedly connected to one side of the connecting frame, a linear sliding rail is fixedly mounted in the mounting seat, an electric sliding table is slidably connected to the linear sliding rail, a mounting box is fixedly connected to the electric sliding table, a stepping motor is fixedly mounted in the mounting box, and a mounting arm is fixedly connected to the output end of the stepping motor. Posture switching of the adjusting mechanism is achieved through the rotating air cylinder, the height and angle adjusting function of the adjusting mechanism is combined, detection of a curved surface protection film and a plane protection film can be adapted at the same time, detection equipment does not need to be independently configured for different types of protection films, the application scene of the device is greatly improved, and the detection cost is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of optical detection, and particularly relates to a protective film optical performance detection device based on spectrum analysis. BACKGROUND

[0002] The optical performance of a protective film directly affects its use experience and function, and therefore, in the production process of the protective film, a special detection device is needed to detect the optical performance, so as to ensure that the product quality meets the standards. At present, various protective film optical performance detection devices based on spectrum analysis have appeared on the market. Such devices usually take spectrum analysis principle as the core, emit a spectrum through an optical detector, and receive a reflected or transmitted spectrum, calculate the optical performance parameters of the protective film, and provide a basis for the quality judgment of the protective film.

[0003] For example, a kind of optical film optical detection device is disclosed in Chinese Patent No. CN119375189B, which includes a transmittance meter, a light source probe is arranged on the top end of the transmittance meter, a limiting assembly is arranged in the inner cavity of the transmittance meter, and the limiting assembly is located directly below the light source probe. The application can flexibly fix the optical film and clean it through the limiting assembly. The optical film can be unfolded flat during cleaning. The soft material and rolling method can prevent scratches or wear on the surface of the optical film, prevent dust from affecting the detection data during optical film detection, facilitate subsequent light transmission detection, improve the accuracy of detection data, and improve the accuracy of optical film thickness measurement.

[0004] The existing technology has the following problems: the existing optical detection device can only detect flat protective films or curved protective films, and the use is relatively single. If optical performance detection of both types of protective films is needed, two detection devices need to be purchased, which not only occupies more space, but also increases the detection and maintenance costs in the later period. SUMMARY

[0005] In view of the problems existing in the prior art, the application provides a protective film optical performance detection device based on spectrum analysis, which has the advantages of wide application range and low detection cost, and solves the problems of the existing optical detection device that can only detect flat protective films or curved protective films, and the use is relatively single. If optical performance detection of both types of protective films is needed, two detection devices need to be purchased, which not only occupies more space, but also increases the detection and maintenance costs in the later period.

[0006] The application is achieved based on the protective film optical performance detection device based on spectrum analysis, which comprises a detection table for placing the protective film to be detected, a connecting frame rotatably arranged on one side of the detection table through a driving element, an adjusting mechanism installed on the connecting frame, and an optical detector rotatably arranged on the adjusting mechanism.

[0007] As preferred, the detection table is fixedly installed on the base, and the base is fixedly connected with a fixed frame on one side.

[0008] As preferred, the driving element is a rotary air cylinder fixedly installed on the upper end of the fixed frame away from the detection table.

[0009] As preferred, the output end of the rotary air cylinder is rotatably installed in the fixed frame, and the end extends to the side of the fixed frame close to the detection table, and the connecting frame is fixedly installed on the output end of the rotary air cylinder.

[0010] As preferred, the adjusting mechanism comprises a mounting seat fixedly connected on one side of the connecting frame, a linear slide rail fixedly installed in the mounting seat, and an electric sliding table slidably connected on the linear slide rail.

[0011] As preferred, the electric sliding table is fixedly connected with a mounting box, the mounting box is fixedly installed with a stepping motor, and the output end of the stepping motor is fixedly connected with a mounting arm.

[0012] As preferred, the side of the mounting box away from the electric sliding table is fixedly connected with an annular guide seat, the annular guide seat is rotatably connected with a guide ring, and the side of the guide ring away from the mounting arm is fixedly connected with the lower end of the mounting arm.

[0013] As preferred, the mounting arm is provided with a fixing element on the upper end, and the optical detector is detachably arranged on the mounting arm through the fixing element.

[0014] As preferred, the mounting seat is fixedly connected with a guide rod, the end of the connecting frame is provided with a guide groove, and the guide rod is slidably inserted into the guide groove; the detection table is a lifting table, the upper surface of the detection table is fixedly connected with two symmetrically arranged limiting strips, the side of the limiting strips close to each other is fixedly connected with an elastic air bag strip, the side of the detection table close to the fixed frame is fixedly connected with an elastic air bag block, the elastic air bag block is communicated with the elastic air bag strip through a hose, and the side edge of the mounting seat is fixedly connected with two pressing blocks.

[0015] As the preferred of the present application, the back side of the mounting seat is fixedly connected with an electric push rod, the end of the electric push rod is fixedly connected with a bearing plate, the bearing plate is fixedly connected with a pressing strip, the connecting frame is provided with a through hole, and the pressing strip is inserted into the through hole; the back of the connecting frame is fixedly connected with an elastic rubber air bag layer, and the elastic rubber air bag layer is communicated with the elastic air bag strip through a hose.

[0016] As the preferred of the present application, the detection table upper surface is provided with a containing groove, and the containing groove is provided with an elastic air bag plate; the elastic air bag plate is located between the two elastic air bag strips, and the elastic air bag plate is communicated with the elastic air bag strip through a hose.

[0017] As the preferred of the present application, the elastic air bag block is provided with an air pressure sensor, and the air pressure sensor is signal connected with the linear slide rail.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] 1、The present application realizes the posture switching of the adjusting mechanism through the rotary air cylinder, and can simultaneously adapt to the detection of the curved protective film and the flat protective film by combining the height and angle adjusting functions of the adjusting mechanism, without separately configuring detection equipment for different types of protective films, thereby greatly improving the application scenarios of the device and reducing the detection cost.

[0020] 2、The present application realizes the accurate adjustment of the height by adopting the linear slide rail and the electric sliding table, controls the accurate rotation of the angle by the stepping motor, and avoids the deviation or shaking of the optical detector during the detection process by the rotary guiding action of the annular guide seat, thereby ensuring the accuracy and reliability of the optical detection data. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is an overall three-dimensional structure schematic view in the first state of the embodiment 1 of the present application;

[0022] Figure 2 It is an overall three-dimensional structure schematic view in the second state of the embodiment 1 of the present application;

[0023] Figure 3 It is a partial three-dimensional structure schematic view of the embodiment 1 of the present application;

[0024] Figure 4 It is a three-dimensional structure schematic view of the annular guide seat and the guide ring in the embodiment 1 of the present application;

[0025] Figure 5 It is an overall three-dimensional structure schematic view in the second state of the embodiment 2 of the present application;

[0026] Figure 6 It is an enlarged structure schematic view of part A in the present application; Figure 5 ​

[0027] Figure 7 For the present application Figure 5 Enlarged structural schematic view of part B in the present application.

[0028] In the figure: 1, detection table; 11, base; 2, adjustment mechanism; 21, mounting seat; 22, linear slide rail; 23, electric sliding table; 24, mounting box; 25, stepping motor; 26, annular guide seat; 27, guide ring; 3, fixed frame; 4, rotary air cylinder; 5, connecting frame; 6, mounting arm; 7, fixing piece; 8, optical detector; 9, guide rod; 10, guide groove; 12, limiting strip; 13, elastic air bag strip; 14, elastic air bag block; 15, pressing block; 16, electric push rod; 17, bearing plate; 18, pressing strip; 19, elastic rubber air bag layer; 20, containing groove; 28, elastic air bag plate; 29, through hole. DETAILED DESCRIPTION

[0029] In order to further understand the invention content, characteristics and effects of the present application, the following examples are given, and the detailed description is given as follows with reference to the accompanying drawings.

[0030] The structure of the present application will be described in detail below with reference to the accompanying drawings.

[0031] Example 1

[0032] As Figures 1 to 4 shown, the optical performance detection device for protective film based on spectrum analysis provided by the embodiment of the present application includes a detection table 1 for placing the protective film to be detected, a connecting frame 5 is rotatably arranged on one side of the detection table 1 through a driving part, an adjustment mechanism 2 is installed on the connecting frame 5, and an optical detector 8 is rotatably arranged on the adjustment mechanism 2.

[0033] In the present application, the optical detector 8 is an integrated detection instrument based on the principle of spectrum analysis, which is composed of a broadband light source for emitting a probe light beam and a spectrometer for receiving and analyzing the spectrum signal from the protective film, and can perform spectrum analysis on the protective film to accurately measure the key parameters such as transmittance and haze.

[0034] Further, the detection table 1 is fixedly installed on the base 11, the base 11 is fixedly connected with a fixed frame 3 on one side, the fixed frame 3 is L-shaped, the driving part is a rotary air cylinder 4, the rotary air cylinder 4 is fixedly installed on the upper end of the fixed frame 3 away from the detection table 1 on one side, the output end of the rotary air cylinder 4 is rotatably installed in the fixed frame 3, and the end portion extends to the side of the fixed frame 3 close to the detection table 1, and the connecting frame 5 is fixedly installed on the output end of the rotary air cylinder 4.

[0035] The detection table 1 is used for carrying the protective film to be detected, which can be curved or flat. The rotary cylinder 4 drives the connecting frame 5 to rotate, thereby driving the adjusting mechanism 2 and the optical detector 8 to rotate, so as to adjust the working state of the equipment according to the shape of the protective film.

[0036] Further, the adjusting mechanism 2 comprises a mounting seat 21 fixedly connected to one side of the connecting frame 5. A linear slide rail 22 is fixedly installed in the mounting seat 21. An electric slide table 23 is slidably connected to the linear slide rail 22. A mounting box 24 is fixedly connected to the electric slide table 23. A stepping motor 25 is fixedly installed in the mounting box 24. An installation arm 6 is fixedly connected to the output end of the stepping motor 25. An annular guide seat 26 is fixedly connected to the side of the mounting box 24 away from the electric slide table 23. A guide ring 27 is rotatably connected to the annular guide seat 26. One side of the guide ring 27 is fixedly connected to the lower end of the installation arm 6.

[0037] The mounting seat 21 and the connecting frame 5 are both in U shape. The mounting seat 21 is fixedly connected to the outer side of the connecting frame 5. The linear slide rail 22 is fixedly installed in the inner side of the mounting seat 21. The linear slide rail 22 and the electric slide table 23 are adopted to realize accurate adjustment of height and horizontal displacement. The stepping motor 25 controls the accurate rotation of the angle. The rotation of the annular guide seat 26 is guided. The light path stability of the optical detector 8 in the rotation scanning process is ensured. The spectrum signal fluctuation caused by the shaking of the probe is effectively prevented.

[0038] When the protective film to be detected is curved, the rotary cylinder 4 is not started. The connecting frame 5 and the linear slide rail 22 are in vertical state. The electric slide table 23 is electrified to slide upwards or downwards along the linear slide rail 22, thereby driving the optical detector 8 to move synchronously. The protective film with different thicknesses or different fixed heights is adapted. The stepping motor 25 is started to drive the installation arm 6 and the optical detector 8 to rotate, thereby realizing optical detection of the whole curved surface of the protective film. It should be noted that if the protective films with different curvatures need to be detected, the arm body of the installation arm 6 can be set to be telescopic, so as to ensure that the distance between the optical detector 8 and the surface of the protective film is consistent during the rotation of the optical detector 8, thereby improving the detection precision.

[0039] When the protective film to be detected is flat, the rotary cylinder 4 is started to drive the connecting frame 5, the adjusting mechanism 2 and the optical detector 8 to rotate by ninety degrees, so that the linear slide rail 22 is in horizontal state. The stepping motor 25 is started to drive the installation arm 6 and the optical detector 8 to rotate by ninety degrees in reverse direction, so that the detection end of the optical detector 8 is perpendicular to the surface of the protective film. In this state, the electric slide table 23 is electrified to move horizontally along the linear slide rail 22, thereby driving the optical detector 8 to move synchronously, thereby realizing optical detection of the whole flat surface of the protective film.

[0040] The posture switching of the adjusting mechanism 2 is realized by rotating the air cylinder 4, and the height and angle adjusting functions of the adjusting mechanism 2 can be combined to simultaneously adapt to the detection of curved protective films and flat protective films, effectively solve the problem that the existing optical detection device cannot realize curved surface detection due to the fixed shooting angle, and do not need to separately configure detection equipment for different types of protective films, greatly improve the application scenarios of the device and reduce the detection cost.

[0041] Further, a fixing piece 7 is arranged at the upper end of the mounting arm 6, and the optical detector 8 is detachably arranged on the mounting arm 6 through the fixing piece 7.

[0042] The fixing piece 7 is designed in a detachable manner, such as buckles, quick-release screws, etc., so that the optical detector 8 and the mounting arm 6 can be quickly assembled and disassembled, and compared with the integral design, the subsequent maintenance, calibration or replacement can be facilitated.

[0043] The working principle of the embodiment 1 of the application is as follows:

[0044] The protective film is fixed on the detection table 1, when the protective film to be detected is curved, the rotary air cylinder 4 is not started, the connecting frame 5 and the linear slide rail 22 are in a vertical state, the electric slide platform 23 is powered to slide upwards or downwards along the linear slide rail 22, thereby driving the optical detector 8 to move synchronously, so as to adapt to protective films with different thicknesses or different fixed heights, and then the step motor 25 is started to drive the mounting arm 6 and the optical detector 8 to rotate, so as to perform optical detection on the entire curved surface of the protective film, when the protective film to be detected is flat, the rotary air cylinder 4 is started to drive the connecting frame 5, the adjusting mechanism 2 and the optical detector 8 to rotate by 90 degrees, so that the linear slide rail 22 is in a horizontal state, and then the step motor 25 is started to drive the mounting arm 6 and the optical detector 8 to rotate by 90 degrees in the opposite direction, so that the detection end of the optical detector 8 is perpendicular to the surface of the protective film, in this state, the electric slide platform 23 is powered to move horizontally along the linear slide rail 22, thereby driving the optical detector 8 to move synchronously, so as to perform optical detection on the entire flat surface of the protective film.

[0045] In summary, the protective film optical performance detection device based on spectrum analysis can realize posture switching of the adjusting mechanism 2 through the rotary air cylinder 4, and can simultaneously adapt to the detection of curved protective films and flat protective films by combining the height and angle adjusting functions of the adjusting mechanism 2, without the need to separately configure detection equipment for different types of protective films, thereby greatly improving the application scenarios of the device and reducing the detection cost.

[0046] Embodiment 2

[0047] Reference Figures 1-7 On the basis of the embodiment 1, the following settings are further made:

[0048] The mounting seat 21 is fixedly connected with a guide rod 9, the end portion of the connecting frame 5 is provided with a guide groove 10, and the guide rod 9 is slidingly inserted into the guide groove 10.

[0049] The detection table 1 is a lifting table, two symmetrical limiting strips 12 are fixedly connected to the upper surface of the detection table 1, elastic air bag strips 13 are fixedly connected to the side of the limiting strips 12 close to each other, an elastic air bag block 14 is fixedly connected to the side of the detection table 1 close to the fixed frame 3, and the elastic air bag block 14 is communicated with the elastic air bag strips 13 through a hose; two pressing blocks 15 are fixedly connected to the side edges of the mounting seat 21.

[0050] An electric push rod 16 is fixedly connected to the back of the mounting seat 21, a bearing plate 17 is fixedly connected to the end of the electric push rod 16, a pressing strip 18 is fixedly connected to the bearing plate 17, a through hole 29 is formed in the connecting frame 5, and the pressing strip 18 is inserted into the through hole 29; an elastic rubber air bag layer 19 is fixedly connected to the back of the connecting frame 5, and the elastic rubber air bag layer 19 is communicated with the elastic air bag strips 13 through a hose.

[0051] An accommodating groove 20 is arranged on the upper surface of the detection table 1, and an elastic air bag plate 28 is arranged in the accommodating groove 20; the elastic air bag plate 28 is located between the two elastic air bag strips 13, and the elastic air bag plate 28 is communicated with the elastic air bag strips 13 through a hose.

[0052] Further, a gas pressure sensor is arranged in the elastic air bag block 14, and the gas pressure sensor is signal-connected to the linear slide rail 22.

[0053] I. Plane protective film detection mode:

[0054] Loading positioning: the plane protective film to be detected is placed between the two limiting strips 12 of the detection table 1, at this time, the elastic air bag strips 13, the elastic air bag block 14 and the elastic air bag plate 28 are all in the initial relaxed state.

[0055] Adjusting mechanism posture switching: the rotary cylinder 4 is started to drive the connecting frame 5 and the adjusting mechanism 2 to rotate 90°, so that the linear slide rail 22 on the mounting seat 21 is switched to a horizontal state; at the same time, the stepping motor 25 is started to drive the mounting arm 6 and the optical detector 8 to rotate 90° in the opposite direction, so as to ensure that the detection end of the optical detector 8 is perpendicular to the surface of the plane protective film. And adjust the height of the detection table 1.

[0056] Tighten and prevent shaking: start the electric push rod 16 at the back of the mounting seat 21, the electric push rod 16 is elongated and pushes the bearing plate 17 and the pressing strip 18 to move towards the connecting frame 5, the pressing strip 18 is inserted into the through hole 29 on the connecting frame 5 and extrudes the elastic rubber air bag layer 19 at the back of the connecting frame 5. On the one hand, the rigid extrusion of the pressing strip 18 and the elastic deformation of the elastic rubber air bag layer 19 form a friction force, which realizes the relative fixation of the connecting frame 5 and the mounting seat 21, and avoids the shaking of the adjusting mechanism during the detection process; on the other hand, the gas in the elastic rubber air bag layer 19 is extruded into the two elastic air bag strips 13 through the hose, the elastic air bag strips 13 are inflated and expand from both sides to clamp the long side of the plane protection film, and the plane protection film is automatically corrected to the center position of the detection table 1.

[0057] Clamp and detect the starting point: the electric push rod 16 continues to elongate, driving the mounting seat 21 to move away from the connecting frame 5 along the guide rod 9 (the guide rod 9 slides along the guide groove 10 at the end of the connecting frame 5 to ensure smooth movement), and simultaneously driving the optical detector 8 to move towards the edge of the plane protection film; when the mounting seat 21 moves to the preset position, the pressing block 15 at one side of the mounting seat 21 extrudes the elastic air bag block 14 on the detection table 1, and the gas in the elastic air bag block 14 is further filled into the elastic air bag strip 13, so that the elastic air bag strip 13 completely clamps the plane protection film to prevent displacement of the protection film during detection; at this time, the optical detector 8 is just moved to the edge of the plane protection film, and the detection starting point calibration is completed.

[0058] Partition scanning detection: start the electric sliding table 23, and move the electric sliding table 23 along the horizontal straight rail 22, driving the optical detector 8 to perform spectral scanning detection on the current area of the plane protection film to obtain optical performance parameters such as transmittance and haze; after completing detection of one area, the electric push rod 16 is appropriately shortened to move the optical detector 8 to the next detection area, and the above scanning action is repeated; the air pressure sensor built in the elastic air bag block 14 monitors the air pressure in the air bag in real time, and automatically adjusts the moving distance of the electric sliding table 23 according to the air pressure change, so as to ensure that there is no overlap and no omission in the detection area.

[0059] Detection completion and discharging: after the entire plane protection film is detected, the electric push rod 16 is completely shortened, the pressing block 15 is separated from the elastic air bag block 14, the gas in the elastic rubber air bag layer 19 and the elastic air bag strip 13 flows back to the initial state, the elastic air bag strip 13 releases the protection film, and the detected product can be taken off.

[0060] It should be noted that for a rectangular flat screen, the elastic air bag strip 13 can be clamped on the long side. The advantage is that during the clamping of the long side of the air bag strip, the electric push rod 16 needs to be stretched longer, and the pressing block 15 can fully extrude the elastic air bag block 14, and at this time, the optical detector 8 is just moved to the edge position of the flat screen, so as to start detection. By moving the linear slide rail 22, a region of the flat screen is detected, then the electric push rod 16 is shortened, and by moving the linear slide rail 22, the next region of the flat screen is detected, until the last region is detected, and the pressing block 15 is just separated from the elastic air bag block 14, so as to release the fixation of the flat screen by the air bag strip.

[0061] II. Detection mode of flat protective film in curved state

[0062] This mode is used to simulate the change of optical performance of the flat protective film in the curved working condition. The previous steps (loading positioning, posture switching, tensioning and anti-shaking) are consistent with the flat protective film detection mode, and the difference lies in that:

[0063] The electric push rod 16 is continuously stretched, so that the extrusion force of the pressing block 15 on the elastic air bag block 14 exceeds the preset threshold value, and the gas in the elastic air bag block 14 is filled into the elastic air bag strip 13 and also filled into the elastic air bag plate 28 in the accommodating groove 20 of the detection table 1 through the hose; the elastic air bag plate 28 is inflated and rises upward, pushing the middle part of the flat protective film to protrude upward, so that the protective film presents a curved state with a preset curvature; the curved state is maintained, the electric slide table 23 is started to drive the optical detector 8 to complete scanning detection, and the optical performance data of the protective film in the curved state can be obtained.

[0064] III. Detection mode of curved protective film

[0065] Adjustment mechanism initial posture retention: the rotary cylinder 4 is not started, the connecting frame 5 and the linear slide rail 22 are kept in vertical state, and the optical detector 8 is in the initial position of curved surface detection.

[0066] Clamping and fixing of curved protective film: place the curved protective film between the limiting strips 12 of the detection table 1, manually or automatically drive the electric slide table 23 to move along the vertical linear slide rail 22, and drive the mounting seat 21 to approach the detection table 1; during the movement of the mounting seat 21, the side wall directly extrudes the elastic air bag block 14, so that the elastic air bag strip 13 is inflated and clamps the edge of the curved protective film; at the same time, the elastic air bag plate 28 is self-adapted to inflation according to the curvature of the curved protective film, and is attached to the inner curved surface of the protective film, so as to realize the stable support and fixation of the curved protective film.

[0067] Multi-angle scanning detection: start the electric sliding table 23, drive the optical detector 8 to move along the vertical direction, adapt to the height of the curved protective film; start the stepping motor 25, drive the mounting arm 6 and the optical detector 8 to rotate, so that the detection end of the optical detector 8 is always perpendicular to the to-be-detected point of the curved protective film; the cooperation of the annular guide seat 26 and the guide ring 27 ensures that the mounting arm 6 does not deviate during rotation, and the optical detector 8 completes full-angle spectral scanning detection along the curved trajectory.

[0068] Detection completion and discharging: after detection is completed, the electric sliding table 23 drives the mounting seat 21 to move away from the detection table 1, the elastic air bag block 14 releases pressure, the elastic air bag strip 13 and the elastic air bag plate 28 restore the relaxed state, and the curved protective film can be removed.

[0069] It should be noted that, in the present text, relational terms such as first and second and the like can merely be used to distinguish one entity or action from another, without necessarily requiring or implying that there is any such actual relationship or order between or among the entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, so that a process, method, article, or apparatus that comprises a list of elements does not include only those elements, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0070] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A protective film optical performance testing device based on spectral analysis, comprising a testing stage (1), characterized in that: The testing platform (1) is used to place the protective film to be tested. A connecting frame (5) is rotatably provided on one side of the testing platform (1) via a driving component. An adjustment mechanism (2) is installed on the connecting frame (5). An optical detector (8) is rotatably provided on the adjustment mechanism (2). The adjustment mechanism (2) includes a mounting base (21), which is fixedly connected to one side of the connecting frame (5). A linear slide rail (22) is fixedly installed inside the mounting base (21). An electric slide table (23) is slidably connected to the linear slide rail (22). A mounting box (24) is fixedly connected to the electric slide table (23). A stepper motor (25) is fixedly installed inside the mounting box (24). An mounting arm (6) is fixedly connected to the output end of the stepper motor (25).

2. The protective film optical performance testing device based on spectral analysis as described in claim 1, characterized in that: The testing platform (1) is fixedly installed on the base (11), and a fixing frame (3) is fixedly connected to one side of the base (11). The fixing frame (3) is L-shaped.

3. The protective film optical performance testing device based on spectral analysis as described in claim 2, characterized in that: The driving component is a rotary cylinder (4), which is fixedly installed on the upper end of the fixed frame (3) away from the test table (1).

4. The protective film optical performance testing device based on spectral analysis as described in claim 3, characterized in that: The output end of the rotary cylinder (4) is rotatably mounted in the fixed frame (3), and the end extends to the side of the fixed frame (3) near the test table (1). The connecting frame (5) is fixedly mounted on the output end of the rotary cylinder (4).

5. The protective film optical performance testing device based on spectral analysis as described in claim 1, characterized in that: The mounting box (24) is fixedly connected to an annular guide seat (26) on the side away from the electric slide (23). A guide ring (27) is rotatably connected inside the annular guide seat (26). One side of the guide ring (27) is fixedly connected to the lower end of the mounting arm (6).

6. The protective film optical performance testing device based on spectral analysis as described in claim 5, characterized in that: The upper end of the mounting arm (6) is provided with a fixing member (7), and the optical detector (8) is detachably mounted on the mounting arm (6) through the fixing member (7).

7. The protective film optical performance testing device based on spectral analysis as described in claim 6, characterized in that: A guide rod (9) is fixedly connected to the mounting base (21), and a guide groove (10) is provided at the end of the connecting frame (5). The guide rod (9) is slidably inserted into the guide groove (10). The testing platform (1) is a lifting platform. Two symmetrically arranged limiting strips (12) are fixedly connected to the upper surface of the testing platform (1). An elastic airbag strip (13) is fixedly connected to the side of the limiting strips (12) that are close to each other. An elastic airbag block (14) is fixedly connected to the side of the testing platform (1) that is close to the fixing frame (3). The elastic airbag block (14) is connected to the elastic airbag strip (13) through a hose. Two pressure blocks (15) are fixedly connected to one edge of the mounting base (21).

8. The protective film optical performance testing device based on spectral analysis as described in claim 7, characterized in that: An electric push rod (16) is fixedly connected to the back side of the mounting base (21), and a bearing plate (17) is fixedly connected to the end of the electric push rod (16). A pressure strip (18) is fixedly connected to the bearing plate (17), and a through hole (29) is opened on the connecting frame (5). The pressure strip (18) is inserted into the through hole (29). The back of the connecting frame (5) is fixedly connected to an elastic rubber airbag layer (19), which is connected to the elastic airbag strip (13) through a hose.

9. The protective film optical performance testing device based on spectral analysis as described in claim 8, characterized in that: The upper surface of the testing station (1) is provided with a receiving groove (20), and an elastic airbag plate (28) is provided in the receiving groove (20); the elastic airbag plate (28) is located between the two elastic airbag strips (13), and the elastic airbag plate (28) is connected to the elastic airbag strips (13) through a hose.

10. The protective film optical performance testing device based on spectral analysis as described in claim 9, characterized in that: The elastic airbag block (14) is equipped with a pressure sensor, and the pressure sensor signal is connected to the linear slide rail (22).

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