Film softness testing device

Abstract

The utility model relates to the field of thin film testing, in particular to a thin film softness testing device, which comprises a testing platform on which a clamp for clamping a thin film is mounted; the test rod is vertically connected to the test platform in a sliding manner and is used for abutting against the thin film so as to detect the thin film; the lifting platform is mounted on the test platform and is used for driving the test rod to vertically slide; the force detection element is mounted at one end of the test rod and is used for testing the force applied to the thin film by the test rod; and the displacement detection element is arranged on the lifting platform and is used for detecting the sliding distance of the test rod. The device has the advantages that the softness of the thin film can be automatically detected, and the detection precision is improved.

Description

Technical Field

[0001] This application relates to the field of thin film testing, and particularly to a device for testing the softness of thin films. Background Art

[0002] Due to their lightweight and flexible characteristics, thin film materials are widely used in fields such as packaging, protection, and isolation. Softness is an important indicator for evaluating the performance of thin films and is closely related to the usability and durability of thin films. Traditional methods for testing the softness of thin films mainly rely on manual operation and manual observation, and the test results are easily affected by the subjective judgment and experience of the testers, and the accuracy and repeatability need to be improved. With the progress of industrial automation, it is particularly important to develop a device that can accurately and efficiently test the softness of thin films.

[0003] In the existing technology, although some automated material property testing equipment has emerged, most of these equipment focus on testing the mechanical properties of materials such as tensile, compression, and bending, and automated devices specifically for testing the softness of thin films are still relatively rare. Therefore, there is an urgent need for a device that can accurately, quickly, and automatically test the softness of thin films to solve the problems existing in the prior art. Summary of the Utility Model

[0004] In order to achieve the automatic detection of the softness of thin films and improve the accuracy of detection, this application provides a device for testing the softness of thin films.

[0005] The device for testing the softness of thin films provided by this application adopts the following technical solutions:

[0006] A device for testing the softness of thin films, including a test platform, on which a fixture for clamping the thin film is installed;

[0007] A test rod, vertically slidably connected to the test platform, for abutting against the thin film to detect the thin film;

[0008] A lifting platform, installed on the test platform, for driving the test rod to slide vertically;

[0009] A force detection element, installed at one end of the test rod, for testing the force exerted by the test rod on the thin film;

[0010] A displacement detection element, installed on the lifting platform, for detecting the sliding distance of the test rod.

[0011] By adopting the above technical solution, during use, the thin film is clamped in the fixture, and the lifting platform drives the test rod to move up and down, so that the lifting rod abuts against the thin film. Then, the force applied by the test rod on the thin film can be detected by the force detection element, and at the same time, the sliding distance of the test rod can be detected by the displacement sensor. By applying a set force to the thin film and measuring the extended distance of the thin film under the action of the set force, the softness of the thin film can be obtained, realizing the automatic detection of the thin film. Moreover, since the detection is carried out by the detection device uniformly, the detection accuracy is greatly improved.

[0012] Optionally, the lifting platform includes a mounting frame fixedly connected to the test platform, a sliding rod vertically slidably connected to the mounting frame, and a linear drive assembly mounted on the mounting frame for driving the sliding rod to slide. The end of the test rod away from the force detection element is mounted on the sliding rod.

[0013] By adopting the above technical solution, the linear drive assembly can drive the sliding rod to slide on the mounting frame, thereby driving the test rod to move up and down, enabling the test rod to apply force to the thin film or release the force on the thin film.

[0014] Optionally, the linear drive assembly includes a drive motor fixedly connected to the mounting frame, a lead screw fixedly connected to the output shaft of the drive motor, and a guide rod fixedly connected to the mounting frame for guiding the sliding rod. The sliding rod is threadedly connected to the lead screw and slidably engaged with the guide rod.

[0015] By adopting the above technical solution, by starting the drive motor, the drive motor can drive the lead screw to rotate. Due to the setting of the guide rod, the sliding rod can slide along the axial direction of the lead screw, realizing the lifting of the test rod mounted on the sliding rod.

[0016] Optionally, the displacement detection element includes a displacement sensor mounted between the mounting frame and the sliding rod.

[0017] By adopting the above technical solution, the sliding distance of the sliding rod can be detected by the displacement sensor.

[0018] Optionally, the force detection element includes a force value sensor mounted on the test rod.

[0019] By adopting the above technical solution, the force applied to the thin film can be accurately detected by the force value sensor.

[0020] Optionally, the fixture includes a support frame detachably connected to the lifting platform and a pressing plate hinged to the support frame. Test spaces for the test rod to extend into are provided on both the support frame and the pressing plate.

[0021] By adopting the above technical solution, the film can be clamped by the pressing plate and the support frame, thereby fixing the position of the film on the fixture.

[0022] Optionally, one end of the pressing plate is hinged to the support frame, and a clamping component for fixing the positions of the pressing plate and the support frame is arranged between the other end of the pressing plate and the support frame.

[0023] By adopting the above technical solution, the position of the fixture on the support frame can be fixed through the clamping component, realizing the firm clamping of the film.

[0024] Optionally, the clamping component includes a rotating plate hinged to the support frame, a clamping plate fixedly connected to the side of the rotating plate facing the pressing plate, and a limiting plate fixedly connected to one end of the pressing plate. The clamping plate can be clamped on the limiting plate. A convex rib is fixedly connected to the side of the clamping plate facing the limiting plate, and a groove for the convex rib to be embedded is formed on the limiting plate.

[0025] By adopting the above technical solution, by operating the rotation of the rotating plate, the clamping plate can be clamped on the limiting plate, thereby realizing the fixation of the pressing plate and the support frame and ensuring the clamping of the film.

[0026] Optionally, fixing plates are fixedly connected to opposite sides of the support frame. The fixing plates are located on the lower side of the support frame. The fixing plates are connected to the test platform through bolts, and a plurality of threaded holes for installing bolts are formed on the fixing plates.

[0027] By adopting the above technical solution, by screwing the bolts into the threaded holes at appropriate positions, the position of the fixture on the test platform can be fixed, completing the fixation of the fixture.

[0028] Optionally, the lifting platform, the force detection element and the displacement detection element are all connected to a controller. The force detection element and the displacement detection element transmit the detected data to the controller in real time. The controller controls the lifting of the lifting platform according to the data detected by the force detection element and the displacement detection element; a control panel is arranged on the test platform, and the control panel is connected to the controller for displaying the data detected by the force detection element and the displacement detection element.

[0029] By adopting the above technical solution, it enables the staff to directly control the automatic operation of the entire test device at the control panel and view the detection data at the control panel, which is very convenient for operation and viewing.

[0030] In summary, the present application includes at least one of the following beneficial technical effects:

[0031] 1. This application adopts an automated testing method. Through the cooperation of a lifting platform, a force detection element, and a displacement detection element, it realizes the accurate and rapid detection of the softness of the film, improves the testing efficiency and accuracy, and avoids human errors in traditional manual testing methods;

[0032] 2. In this application, the detachable connection between the fixture and the testing platform enables the installation of fixtures of different sizes according to the size of the film to be detected, so as to meet the testing needs of films of different sizes and shapes. At the same time, the setting of the clamping component also makes the fixture more stable and reliable when fixing the film, ensuring the stability of the film during the testing process;

[0033] 3. This application opens a plurality of threaded holes for installing fixtures on the testing platform, so that when it is necessary to detect films of different sizes, the fixtures of corresponding sizes can be installed on the testing platform, and the installation is more convenient and fast. Description of the Drawings

[0034] Figure 1 is the overall structural schematic diagram of this application.

[0035] Figure 2 is a schematic diagram for showing the structure of the clamping component.

[0036] Description of the Reference Numerals: 1, testing platform; 11, threaded hole; 12, control panel; 2, fixture; 21, support frame; 22, pressing plate; 23, detection space; 24, clamping component; 241, rotating plate; 242, clamping plate; 243, limiting plate; 244, convex rib; 245, groove; 25, fixing plate; 3, testing rod; 31, force detection element; 32, displacement detection element; 4, lifting platform; 41, mounting frame; 42, sliding rod; 43, linear drive component; 431, drive motor; 432, lead screw; 433, guide rod. Detailed Description of the Embodiment

[0037] The following is a further detailed description of this application in combination with the attached Figure 1-2 drawings.

[0038] This application embodiment discloses a film softness testing device. Refer to Figure 1, the film softness testing device includes a testing platform 1, a fixture 2 installed on the testing platform 1 for fixing the position of the film on the testing platform 1, a testing rod 3 vertically slidably connected to the testing platform 1 for abutting and detecting the film, and a lifting platform 4 installed on the testing platform 1 for driving the testing rod 3 to slide vertically. Among them, a force detection element 31 is installed at one end of the testing rod 3 facing the testing platform 1 to test the force exerted by the testing rod 3 on the film through the force detection element 31; a displacement detection element 32 for detecting the sliding distance of the testing rod 3 is also installed on the lifting platform 4. When in use, the lifting platform 4 drives the testing rod 3 to slide vertically until the testing rod 3 abuts against the film and exerts a force on the film, causing the film to deform. At this time, the force of the testing rod 3 abutting against the film increases, and the force detection element 31 will detect it. When the force detection element 31 detects that the force exerted on the film reaches the set value, the lifting platform 4 is controlled to stop. At this time, the moving distance of the testing rod 3 can be detected by the displacement detection element 32, thereby obtaining the softness of the film.

[0039] Referring to Figure 1 , the lifting platform 4 includes a mounting frame 41 fixedly connected to the testing platform 1, a sliding rod 42 vertically slidably connected to the mounting frame 41, and a linear drive assembly 43 installed on the mounting frame 41 for driving the sliding rod 42 to slide vertically. The testing rod 3 is vertically arranged and fixedly connected to one side of the sliding rod 42 facing the testing platform 1, and the force detection element 31 is installed at one end of the testing rod 3 away from the sliding rod 42. So that the linear drive assembly 43 can drive the sliding rod 42 to slide vertically on the mounting frame 41, and then drive the testing rod 3 fixedly connected to the sliding rod 42 to slide vertically.

[0040] Among them, the linear drive assembly 43 includes a drive motor 431 fixedly connected to the mounting frame 41, a lead screw 432 fixedly connected to the output shaft of the drive motor 431, and a guide rod 433 fixedly connected to the mounting frame 41 for guiding the sliding rod 42. The sliding rod 42 is threadedly connected to the lead screw 432 and slidably connected to the guide rod 433. So that when the drive motor 431 is started, the drive motor 431 can drive the lead screw 432 to rotate. Due to the limitation of the guide rod 433, the sliding rod 42 slides along the length direction of the lead screw 432, realizing driving the testing rod 3 to slide vertically.

[0041] Of course, the linear drive assembly 43 can also be a linear motor, a cylinder, etc., as long as it can drive the sliding rod 42 to slide vertically.

[0042] The displacement detection element 32 can be a displacement sensor, and the displacement sensor is installed between the sliding rod 42 and the mounting frame 41. Specifically, the main body part of the displacement sensor is installed on the mounting frame 41, and the sliding piece of the displacement sensor is installed on the sliding rod 42, so that the sliding distance of the sliding rod 42 can be detected.

[0043] The force detection element 31 can be selected as a force value sensor installed at the end of the test rod 3. When the test rod 3 abuts against the thin film, the force value sensor is located between the test rod 3 and the thin film, so as to detect the force applied by the test rod 3 on the thin film.

[0044] Refer to Figure 1 , the fixture 2 is detachably connected to the test platform 1. Specifically, the fixture 2 includes a support frame 21 with a U-shaped cross-section detachably connected to the lifting platform 4 and a pressing plate 22 hinged to the support frame 21. Holes for the test rod 3 to extend into are formed on both the support frame 21 and the pressing plate 22, and the holes form a detection space 23 for detecting the thin film.

[0045] During use, directly place the thin film between the pressing plate 22 and the support frame 21, fix the position of the thin film on the support frame 21 through the pressing plate 22, and then operate the test rod 3 to extend into the test space, so as to apply a force to abut against the thin film through the test rod 3 to detect the softness of the thin film.

[0046] Refer to Figure 1 and Figure 2 , at the same time, in order to make the thin film fixed more firmly between the pressing plate 22 and the support frame 21, a clamping assembly 24 for fixing the relative positions of the pressing plate 22 and the support frame 21 is further provided between the pressing plate 22 and the support frame 21. The clamping assembly 24 is located at one end of the pressing plate 22 away from the hinge axis with the support frame 21.

[0047] Refer to Figure 2 , the clamping assembly includes a rotating plate 241 hinged to one end of the support frame 21, a clamping plate 242 fixedly connected to the side of the rotating plate 241 facing the pressing plate 22, and a limiting plate 243 fixedly connected to one end of the pressing plate 22. When the rotating plate 241 is operated to rotate around the hinge axis with the support frame 21, the rotating plate 241 can rotate to make the clamping plate 242 abut against the upper side of the limiting plate 243, so as to fix the limiting plate 243 between the clamping plate 242 and the rotating plate 241 and fix the relative positions of the pressing plate 22 and the support frame 21.

[0048] At the same time, in order to prevent the rotating plate 241 from rotating on the support frame 21 under the action of an external force, so that the clamping plate 242 is separated from the limiting plate 243, a convex rib 244 is fixedly connected to the side of the clamping plate 242 facing the limiting plate 243. At the same time, a groove 245 for the convex rib 244 to be embedded is formed on the upper surface of the limiting plate 243. When the clamping plate 242 is clamped on the limiting plate 243, the convex rib 244 is also embedded in the groove 245, so that the clamping of the clamping plate 242 and the limiting plate 243 is more firm. When it is necessary to release the clamping relationship between the clamping plate 242 and the limiting plate 243, directly apply a force to operate the rotating plate 241 to rotate, and the convex rib 244 can be rotated out of the groove 245, and the operation is more convenient.

[0049] Refer to Figure 1 , the U-shaped open end of the support frame 21 abuts against the test platform 1, and fixing plates 25 are fixedly connected to both sides of the U-shaped open end of the support frame 21. The fixing plates 25 are formed by bending the two sides of the U-shaped open end of the support frame 21 outward. The fixing plates 25 and the test platform 1 are connected by bolts to realize the detachable connection between the support frame 21 and the test platform 1. At the same time, a plurality of threaded holes 11 are arranged in a matrix on the test platform 1, so that during use, clamps 2 of different sizes can be installed according to the size of the thin film to be tested. During installation, only need to place the clamp 2 on the test platform 1 and make the test rod 3 directly above the test space of the clamp 2, and then fix the position of the clamp 2 on the test platform 1 with bolts. The installation and replacement are very simple and convenient.

[0050] Among them, in order to realize the automatic detection of the softness of the thin film, a controller is also provided, and specifically, a PLC controller can be selected. The drive motor 431, the force value sensor and the linear displacement sensor of the lifting platform 4 are all connected to the controller. The data detected by the force value sensor and the linear displacement sensor will be transmitted to the PLC controller in real time. The specific process is that when the drive motor 431 is controlled to start, the drive motor 431 will drive the test rod 3 to descend, so that the force value sensor abuts against the thin film. As the test rod 3 continues to descend, the test rod 3 will drive the thin film to deform, and as the deformation amount of the thin film gradually increases, the data detected by the force value sensor gradually increases, and the force value sensor also transmits the detected data to the PLC controller in real time. When the PLC controller receives that the data detected by the force value sensor reaches the set value, it will output a stop instruction, and the drive motor 431 will stop after receiving the stop instruction. At this time, the linear displacement sensor also transmits the detected data to the PLC controller, so as to obtain the distance that the thin film extends under a fixed pressure, that is, the softness data of the thin film under the set pressure.

[0051] At the same time, in order to facilitate the staff to read the data detected by the linear displacement sensor, a control panel 12 is also provided on the test platform 1. The control panel 12 is connected to the PLC controller. Through the control panel 12, the set value detected by the force value sensor can be set for the PLC controller, and at the same time, a start instruction can be input through the control panel 12 to control the drive motor 431 to start or reverse through the PLC controller. At the same time, the data detected by the linear displacement sensor received by the PLC controller will also be displayed on the control panel 12, which is convenient for the staff to operate or view.

[0052] The implementation principle of a thin film softness testing device according to an embodiment of the present application is as follows: During testing, the staff directly place the thin film to be tested between the pressure plate 22 and the support frame 21, and fix the position of the thin film in the fixture 2 through the clamping assembly 24. Then, a start command is input through the control panel 12, so that the PLC controller controls the driving motor 431 to start, thereby driving the test rod 3 to descend to abut against the thin film. At the same time, the force value sensor also detects the force applied by the test rod 3 on the thin film in real time, and transmits the detected data to the PLC controller and displays it on the control panel 12. When the PLC controller receives the data detected by the force value sensor reaching the set value, it controls the driving motor 431 to stop, and at the same time obtains the data detected by the linear displacement sensor at this time, so as to obtain the softness data of the thin film. Then, the PLC controller controls the driving motor 431 to reverse and reset, completing the automatic detection of the thin film, realizing the automatic detection of the softness of the thin film, and the staff only needs to complete the placement of the thin film and the start of the control device, and the detection is more convenient and fast, and the detection accuracy is very high.

[0053] The above are all preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A film softness testing device, characterized in that: include: A test platform (1) on which a fixture (2) for clamping a film is installed; A test rod (3) is vertically slidably connected to the test platform (1) and is used to abut against the film to test the film; A lifting platform (4) is installed on the test platform (1) and is used to drive the test rod (3) to slide vertically; A force detection element (31) is mounted on one end of the test rod (3) and is used to test the force applied by the test rod (3) on the film; A displacement detection element (32) is installed on the lifting platform (4) and is used to detect the sliding distance of the test rod (3).

2. The film softness testing device according to claim 1, characterized in that: The lifting platform (4) comprises a mounting frame (41) fixedly connected to the test platform (1), a sliding rod (42) vertically slidably connected to the mounting frame (41), and a linear drive assembly (43) mounted on the mounting frame (41) for driving the sliding rod (42) to slide, and one end of the test rod (3) away from the force detection element (31) is mounted on the sliding rod (42).

3. The film softness testing device according to claim 2, characterized in that: The linear drive assembly (43) comprises a driving motor (431) fixedly connected to the mounting frame (41), a screw rod (432) fixedly connected to the output shaft of the driving motor (431), and a guide rod (433) fixedly connected to the mounting frame (41) for guiding the sliding rod (42); the sliding rod (42) is threadedly connected to the screw rod (432), and the sliding rod (42) is slidably matched with the guide rod (433).

4. The film softness testing device according to claim 2, characterized in that: The displacement detection element (32) comprises a displacement sensor installed between the mounting frame (41) and the sliding rod (42).

5. The film softness testing device according to claim 1, characterized in that: The force detection element (31) comprises a force sensor mounted on the test rod (3).

6. The film softness testing device according to claim 1, characterized in that: The clamp (2) comprises a support frame (21) detachably connected to the lifting platform (4) and a pressing plate (22) hinged to the support frame (21); the support frame (21) and the pressing plate (22) are both provided with a test space for the test rod (3) to extend into.

7. The film softness testing device according to claim 6, characterized in that: One end of the pressing plate (22) is hinged to the support frame (21), and a clamping assembly (24) for fixing the position of the pressing plate (22) and the support frame (21) is provided between the other end of the pressing plate (22) and the support frame (21).

8. The film softness testing device according to claim 7, characterized in that: The clamping assembly (24) comprises a rotating plate (241) hinged on the supporting frame (21), a clamping plate (242) fixedly connected to the rotating plate (241) on the side facing the pressure plate (22), and a limiting plate (243) fixedly connected to one end of the pressure plate (22), wherein the clamping plate (242) can be clamped on the limiting plate (243); a convex ridge (244) is fixedly connected to the side of the clamping plate (242) facing the limiting plate (243), and a groove (245) is provided on the limiting plate (243) for the convex ridge (244) to be embedded.

9. The film softness testing device according to claim 6, characterized in that: The support frame (21) is fixedly connected to two opposite sides thereof with fixing plates (25), the fixing plates (25) being located at the lower side of the support frame (21), the fixing plates (25) being connected to the test platform (1) via bolts, and the fixing plates (25) being provided with a plurality of threaded holes (11) for mounting the bolts.

10. The film softness testing device according to any one of claims 1 to 9, characterized in that: The lifting platform (4), the force detection element (31) and the displacement detection element (32) are all connected to a controller; the force detection element (31) and the displacement detection element (32) transmit detected data to the controller in real time; and the controller controls the lifting of the lifting platform (4) according to the data detected by the force detection element (31) and the displacement detection element (32); a control panel (12) is provided on the test platform (1); the control panel (12) is connected to the controller and is used to display the data detected by the force detection element (31) and the displacement detection element (32).

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