Thin film tensile strength detection device

Abstract

The utility model discloses a thin film tensile strength detection device, which relates to the technical field of thin film detection, and comprises a clamping jaw tension detector for clamping a thin film, and the tension detector is connected with one clamping jaw and is driven by a tractor to apply tension to the clamping jaw; wherein the clamping jaw comprises an air cylinder, and the telescopic end of the air cylinder is connected with an adsorption plate capable of adsorbing a film; and the adsorption plate can clamp the film through a fixing clamp outside the adsorption plate. According to the thin film tensile strength detection device disclosed by the utility model, the adsorption plate is adopted to adsorb the thin film to be detected, and then the thin film is clamped by the fixing clamp, so that the technical problems that the thin film is tedious to fix and poor in accuracy when the existing thin film tensile strength detection device is used are effectively solved; and meanwhile, mechanical grabbing is adopted, the stability and accuracy of film detection are guaranteed, and instability caused by manual work is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of film performance detection, in particular to a film tensile strength detection device. Background Art

[0002] Film is a thin, soft, transparent sheet made of plastic, adhesive, rubber or other materials.

[0003] Decorative black film is a high-tech self-adhesive product designed for special industrial applications.

[0004] In the automotive industry, it is commonly used in door structures or window pillars to replace paint decoration and enhance the visual effect of windshields and window frames.

[0005] Decorative black film is composed of stable calendered polyvinyl chloride film, acrylic pressure-sensitive adhesive, and bubble-free silicone oil release paper. Due to the different surface states of the film, it can be divided into: matte film, frosted film, fine frosted film, and high-gloss film. In the research and development and production of films, it is necessary to test the wear resistance, tensile strength, and light conductivity of the film.

[0006] At present, the Chinese patent with the existing patent application number CN202222803683.7 discloses a film tensile performance testing device, including a frame, on which a first fixing seat for fixing the head end of the film and a second fixing seat slidably connected to the frame for fixing the end of the film are respectively provided. The utility model can firmly press the two ends of the film, so as to facilitate multiple tests on the tensile strength of the film, so that the tensile strength increases successively, and it is convenient to detect whether the tensile strength of the film is qualified; the utility model can adsorb the film on the clamping assembly, solve the problem that the film is not easy to clamp due to static electricity, so as to facilitate the detection and recording of the tensile performance of the film, and the test results are more accurate; the utility model can keep the position of the film on the clamping assembly stable, increase the fastening strength between the clamping assembly and the film, and prevent the film from loosening during the tensile test.

[0007] However, during the implementation of the above technical solution, it was found that there were at least the following technical problems:

[0008] The film fixing is cumbersome and has poor accuracy: when using the existing film tensile strength testing device, it is necessary to first cut the film into long strips of a specific size, and then manually clamp the film on the device. After installation, the machine is controlled to pull the film. During the pulling process, the length of the film stretched and the tension at different stretching lengths are recorded. It can be seen that the fixing of the film is mainly completed by the staff, but in the process of film fixing, it is necessary to ensure that the film does not tilt (if the film tilts when clamped, the test result will be biased), the clamping is stable (to avoid loosening during stretching, which affects the result), and the clamping position is constant (that is, if the film length between the two clamps is not constant, the result obtained will not have a comparative significance). For this reason, we propose a film tensile strength testing device. Utility Model Content

[0009] 1. Technical issues to be resolved

[0010] In view of the deficiencies of the prior art, the utility model provides a film tensile strength detection device, which solves the technical problems of the prior film tensile strength detection device that the film is fixed cumbersomely and has poor accuracy when in use.

[0011] (II) Technical solution

[0012] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0013] A film tensile strength detection device, the detection device comprising:

[0014] Two clamping jaws for clamping the film;

[0015] A tension detector, which is connected to one of the clamping jaws and applies tension to the clamping jaw under the drive of the tractor;

[0016] Wherein, the clamping jaw comprises a cylinder, and the telescopic end of the cylinder is connected to an adsorption plate capable of adsorbing the film;

[0017] The adsorption plate can clamp the film through the fixing clamps outside the adsorption plate.

[0018] Preferably, the adsorption plate is connected to an external air pump through a pipeline, and negative pressure is provided to the adsorption plate so that it adsorbs the film.

[0019] Preferably, the detection device further comprises a placement box for storing the film, and the placement box is located below the clamping claw, so that when the clamping claw is extended, the film placed in the placement box can be clamped, thereby improving the convenience of clamping. Moreover, since the placement box is plugged into the detection box, the placement box can be moved out of the detection box by pulling the placement box. Figure 2As shown, it is convenient for the staff to place the film to be tested into the placement box, or take out the film after testing; Figure 8 and Fig. 9 As shown, when the cylinder is extended, the fixing clip on the outside of the adsorption plate and the edge of the placement box are pressed against each other, causing the fixing clip to rotate and separate from the adsorption plate.

[0020] Preferably, the inner walls of both sides of the placement box are provided with receiving grooves, and when the cylinder continues to extend, the fixing clip is located in the receiving groove, and the adsorption plate is in contact with the bottom surface of the placement box. Fig. 9 As shown, the adsorption plate can contact the film placed at the bottom of the placement box, which is convenient for the subsequent adsorption of the film.

[0021] Preferably, the tractor comprises a toothed belt and a transmission gear meshing with each other, and the end of the toothed belt is connected to the tension detector, so that as long as the toothed belt moves, the tension detector can move synchronously;

[0022] Among them, Figure 6 As shown, the motor drives the worm to rotate, and then the worm drives the worm wheel to rotate. The worm wheel and the transmission tooth are coaxially connected, and the two can rotate coaxially. Because the toothed belt is meshed with the transmission gear, when the transmission gear rotates, it can increase sufficient power for the movement of the toothed belt, so that the tension detector pulls the clamping claw to move, completing the stretching of the film.

[0023] Preferably, the detection device further comprises a support base, and two mutually parallel guide rails are installed at the bottom of the support base, one of the clamping jaws is fixedly installed at the end of the guide rail, and the other clamping jaw is slidably installed on the guide rail;

[0024] The tension detector is connected to a slidable clamping claw, so that when the tension detector is pulled, the slidable clamping claw can be driven to move together.

[0025] Preferably, Figure 4 and Figure 5 As shown, the toothed belt is slidably connected to the bottom of the support seat, which facilitates the movement of the toothed belt on the support seat, and the toothed belt is located between the two guide rails.

[0026] Preferably, a distance measuring sensor is provided on the outer side of the support seat, and the distance measuring sensor is connected to the slidable clamping claw for detecting the stretching distance of the film.

[0027] (III) Beneficial effects

[0028] 1. Since the adsorption plate is used to adsorb the film to be tested, and then the fixed clamp is used to clamp the film, the technical problem of cumbersome film fixing and poor accuracy in the existing film tensile strength testing device during use is effectively solved, thereby reducing the difficulty of film replacement. At the same time, mechanical grabbing is used to ensure the stability and accuracy of film detection and avoid the instability caused by manual labor.

[0029] 2. Since the cylinder is used to drive the fixing clamp to rise and fall, and the closing of the fixing clamp is controlled by the mutual squeezing force between the fixing clamp and the side arm of the placement box, the technical problem of cumbersome film fixing and poor accuracy in the use of the existing film tensile strength testing device is effectively solved, thereby achieving the purpose of automatically clamping the film, thereby further improving the accuracy of film detection and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0031] Figure 1 This is an overall structural diagram of an embodiment of the utility model;

[0032] Figure 2 This is a structural diagram of the protective cover after opening in the embodiment of the utility model;

[0033] Figure 3 This is a structural diagram of a stretching assembly in an embodiment of the utility model;

[0034] Figure 4 It is an exploded structural diagram of the stretching assembly in the embodiment of the utility model;

[0035] Figure 5 This is a structural diagram of the separation of the clamping claw and the tractor in the embodiment of the utility model;

[0036] Figure 6 This is a structural diagram of a tractor in an embodiment of the utility model;

[0037] Figure 7 This is a structural diagram of the clamping jaws in the embodiment of the utility model;

[0038] Figure 8 This is a structural diagram of the clamping jaws and the placement box in the embodiment of the utility model;

[0039] Fig. 9 It is a schematic diagram of film placement in an embodiment of the utility model.

[0040] Legend: 1. Detection box; 2. Protective cover; 3. Placement box; 4. Tensile assembly; 41. Support seat; 42. Clamp; 421. Cylinder; 422. Slider; 423. Connecting block; 424. Adsorption plate; 425. Fixing clamp; 43. Tension detector; 44. Puller; 441. Placement box; 442. Motor; 443. Worm; 444. Worm wheel; 445. Transmission gear; 446. Toothed belt; 447. Distance sensor. DETAILED DESCRIPTION

[0041] The embodiment of the present application provides a film tensile strength testing device, which effectively solves the technical problems of the existing film tensile strength testing device in that the film fixing is cumbersome and the accuracy is poor when in use. When the existing film tensile strength testing device is in use, an adsorption plate is used to adsorb the film to be tested, and then the film is clamped by a fixing clamp, thereby reducing the difficulty of replacing the film, and mechanical grasping is used to ensure the stability and accuracy of film detection, avoiding the instability caused by manual labor; a cylinder is used to drive the fixing clamp to rise and fall, and the closing of the fixing clamp is controlled by the mutual squeezing force between the fixing clamp and the side arm of the placement box, thereby achieving the purpose of automatically clamping the film, thereby further improving the accuracy of film detection and installation.

[0042] Example 1

[0043] The technical solution in the embodiment of the present application effectively solves the technical problem that the film fixing is cumbersome and the accuracy is poor when the existing film tensile strength detection device is used. The overall idea is as follows:

[0044] In view of the problems existing in the prior art, the utility model provides a film tensile strength detection device, which includes a detection box 1 (wherein, a support seat 41, a clamping jaw 42, a tension detector 43 and a tractor constitute a stretching assembly 4), and a transparent protective cover 2 is provided on the outside of the detection box 1 to facilitate observation of the working conditions of the internal equipment of the detection box 1, and the detection box 1 is provided with a clamping jaw 42 for clamping the film, and the number of the clamping jaws 42 is two, one is fixed and the other can slide freely, so after the film is installed, the purpose of stretching the film can be achieved by applying traction to the movable clamping jaw 42. In order to detect the stress condition of the film during the stretching process, a tension detector 43 is connected to the clamping jaw 42, and then the tension detector 43 is pulled by the tractor 44, so that the detection end of the tension detector 43 pulls the slidable clamping jaw 42 to move, such as Figure 4 and Figure 5 As shown;

[0045] The main technical point of the present application is that the clamping claw 42 is designed to be a retractable cylinder 421 (other equipment with a retractable structure can be used), and an adsorption plate 424 capable of adsorbing the film is arranged at the end of the cylinder 421. It is mainly achieved by connecting an external air pump to draw air outward through the air pump, so that the adsorption plate 424 forms a device like a vacuum cleaner, and the external air enters from the vacuum nozzle at the bottom of the adsorption plate 424 and finally enters the air pump. In this way, when the film blocks the vacuum nozzle, the film is adsorbed on the bottom of the adsorption plate 424 under the action of the negative pressure generated by the air pump, so the adsorption plate 424 can be driven to extend by the air pump, so that the adsorption plate 424 covers the film. The film is placed on the film (the film is stored in the placement box 3), and then the air pump is controlled to generate negative pressure. At this time, the film can be sucked up and adhered to the adsorption plate 424, thereby completing the film grabbing. Finally, the film is clamped by the fixing clip 425 to complete the fixation of the film. In this way, the stability of the film during grabbing can be ensured, which is convenient for subsequent detection and improves the accuracy and stability of the detection. Among them, the fixing clip 425 and the adsorption plate 424 are connected by a torsion spring, just like the existing clips. When not subjected to external force, the fixing clip 425 fits the adsorption plate 424, and when the fixing clip 425 is subjected to external force, the torsion spring can be squeezed to separate the fixing clip 425 from the adsorption plate 424. Fig. 9 shown.

[0046] In order to combine the adsorption plate 424 and the fixing clip 425 together, a connecting block 423 is installed at the telescopic end of the cylinder 421, and the adsorption plate 424 and the fixing clip 425 are connected together through the connecting block 423. Figure 7 shown.

[0047] Example 2

[0048] Based on Example 1, the present application provides a feasible solution for the automatic clamping of the fixing clip, and the shape remains stable. The overall idea is as follows:

[0049] The detection device also includes a placement box 3 for storing the film, and the placement box 3 is located below the clamping claw 42, so that when the clamping claw 42 is extended, the film placed in the placement box 3 can be clamped, thereby improving the convenience of clamping. Moreover, since the placement box 3 is plugged into the detection box 1, the placement box 3 can be moved out of the detection box 1 by pulling the placement box 3. Figure 2 As shown, it is convenient for the staff to place the film to be tested into the placement box 3, or take out the film after testing; Figure 8 and Fig. 9 As shown, when the cylinder 421 is extended, the fixing clip 425 on the outside of the adsorption plate 424 and the edge of the placement box 3 are pressed against each other, so that the fixing clip 425 rotates, and the fixing clip 425 and the adsorption plate 424 are separated from each other.

[0050] In some examples, the inner walls of both sides of the placement box 3 are provided with receiving grooves. When the cylinder 421 continues to extend, the fixing clip 425 is located in the receiving groove, and the adsorption plate 424 is in contact with the inner bottom surface of the placement box 3. Fig. 9 As shown, the adsorption plate 424 can contact the film placed at the bottom of the placement box 3, which is convenient for subsequent adsorption of the film.

[0051] Example 3

[0052] Based on Example 1, the present application embodiment provides a feasible technical solution for a tractor, and the overall idea is as follows:

[0053] like Figure 6 As shown, the tractor 44 includes a toothed belt 446 and a transmission gear 445 that mesh with each other, and the end of the toothed belt 446 is connected to the tension detector 43, so that as long as the toothed belt 446 moves, the tension detector 43 can move synchronously;

[0054] Among them, Figure 6 As shown, the motor 442 drives the worm 443 to rotate, and the worm 443 then drives the worm wheel 444 to rotate, and the worm wheel 444 and the transmission gear 445 are coaxially connected, and the two can rotate coaxially (connected to the same shaft, and the end of the shaft is connected to the inner wall of the storage box 441, thereby limiting the position of the shaft and the structure thereon), and because the toothed belt 446 is meshed with the transmission gear 445, when the transmission gear 445 rotates, it can increase sufficient power for the movement of the toothed belt 446, so that the tension detector 43 pulls the clamping jaw 42 to move, thereby completing the stretching of the film.

[0055] In some examples, the detection device further includes a support base 41, and two parallel guide rails are installed at the bottom of the support base 41, one of the clamping jaws 42 is fixedly installed at the end of the guide rail, and the other clamping jaw 42 is slidably installed on the guide rail. The reason why the clamping jaw 42 can move on the guide rail is mainly due to a slider 422 installed outside the cylinder 421. The slider 422 has two holes on the outside, and the two holes correspond to the two guide rails respectively, that is, the guide rail passes through the holes on the slider 422, such as Figure 4 and Figure 7 As shown;

[0056] The tension detector 43 is connected to the slidable clamping claw 42 , so that when the tension detector 43 is pulled, the slidable clamping claw 42 can be driven to move together.

[0057] In some examples, such as Figure 4 and Figure 5 As shown, the toothed belt 446 is slidably connected to the bottom of the support seat 41, so that the toothed belt 446 can move on the support seat 41, and the toothed belt 446 is located between the two guide rails.

[0058] Example 4

[0059] Based on Example 1, the present application example is to detect the stretching length of the film, and the overall idea is as follows:

[0060] A distance sensor 447 is provided on the outer side of the support seat 41, and the distance sensor 447 is connected to the slidable clamping jaw 42 to detect the stretching distance of the film. By measuring the distance between the slidable clamping jaw 42 and another clamping jaw 42, the stretching length of the film is obtained. Figure 3 and Figure 4 shown.

[0061] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A film tensile strength testing device, It is characterized in that The detection device comprises: Two clamping jaws (42) for clamping the film; A tension detector (43), wherein the tension detector (43) is connected to one of the clamping jaws (42) and applies tension to the clamping jaw (42) driven by a tractor (44); The clamping claw (42) comprises a cylinder (421), and the telescopic end of the cylinder (421) is connected to an adsorption plate (424) capable of adsorbing the film; The adsorption plate (424) can clamp the film via the fixing clamp (425) outside the adsorption plate (424).

2. A film tensile strength testing device as claimed in claim 1, Features: The adsorption plate (424) is connected to an external air pump through a pipeline, and negative pressure is provided to the adsorption plate (424) so ​​that it adsorbs the film.

3. A film tensile strength testing device as claimed in claim 1, Features: The detection device also includes a placement box (3) for storing the film, and the placement box (3) is located below the clamping claw (42); When the cylinder (421) is extended, the fixing clip (425) on the outside of the adsorption plate (424) and the edge of the placement box (3) are pressed against each other, so that the fixing clip (425) and the adsorption plate (424) are separated from each other.

4. A film tensile strength testing device as claimed in claim 3, Features: The inner walls on both sides of the placement box (3) are provided with storage grooves, and when the adsorption plate (424) is attached to the inner bottom surface of the placement box (3), the fixing clip (425) is located in the storage groove.

5. A film tensile strength testing device according to any one of claims 1 to 4, Features: The tractor (44) comprises a toothed belt (446) and a transmission gear (445) meshing with each other, and the end of the toothed belt (446) is connected to the tension detector (43); Wherein, the transmission gear (445) drives the tension detector (43) to translate under the drive of the motor (442).

6. A film tensile strength testing device as claimed in claim 5, Features: The detection device also includes a support base (41), and two mutually parallel guide rails are installed at the bottom of the support base (41), one clamping claw (42) is fixedly installed at the end of the guide rail, and the other clamping claw (42) is slidably installed on the guide rail; Wherein, the tension detector (43) is connected to the slidable clamping claw (42).

7. A film tensile strength testing device as claimed in claim 6, Features: The toothed belt (446) is slidably connected to the bottom of the support seat (41), and the toothed belt (446) is located between the two guide rails.

8. A film tensile strength testing device as claimed in claim 6, Features: A distance sensor (447) is provided on the outer side of the support seat (41), and the distance sensor (447) is connected to the slidable clamping claw (42) for detecting the stretching distance of the film.

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