Film tensile testing device

Abstract

The utility model relates to the technical field of clothes hanger testing equipment, in particular to a film stretching testing device which comprises an upper clamping part and a lower clamping part, the upper clamping part is driven by a lifting screw rod part to ascend and descend, the lower clamping part is fixed on a base, and the upper clamping part and the lower clamping part respectively clamp two ends of a film. The upper clamping part is driven by the lifting screw rod part to lift to carry out a tensile test, the upper clamping part is provided with a clamping opening, and clamping plates are symmetrically mounted in the clamping opening. According to the film tensile test device, the turnover clamping plates are symmetrically mounted in the clamping opening formed in the upper clamping part, and the clamping plates are driven by the driving assembly to be mutually clamped or opened, so that the two ends of the film can be firmly clamped. Compared with a traditional fixing mode, the adjustable clamping structure can adapt to soft rubber sheets with different sizes and shapes, the phenomenon that the rubber sheets slip off in the tensile test process due to infirm clamping is avoided, and the accuracy and reliability of test data are ensured.

Description

Film tensile testing device Technical Field

[0001] This utility model relates to the technical field of hanger testing equipment, and more specifically, to a film tensile testing device. Background Technology

[0002] In the field of hanger testing equipment technology, the performance of the soft rubber sheet that serves as an anti-slip element on the two arms of the hanger directly affects the user experience and safety performance of the hanger. Accurately testing the tensile properties of the sheet is a crucial step in evaluating its quality and suitability.

[0003] Currently, various film tensile testing devices exist on the market. For example, patent application number CN202320257439.7 relates to a hair strand stretching device, which is mainly used to stretch and shape hair strands to facilitate subsequent processing into wigs. However, this device is designed for the specific material of hair strands, which differs significantly from the soft rubber sheets used for anti-slip purposes on clothes hangers in terms of material characteristics, testing objectives, and application scenarios. Therefore, it cannot be directly applied to the soft rubber sheet tensile testing involved in this invention.

[0004] In practical applications of anti-slip soft rubber sheets for clothes hangers, the complex and diverse operating environments place high demands on their tensile properties. If the tensile strength of the sheet is insufficient, it may break during use, especially when hanging heavy clothing, resulting in loss of its anti-slip function, causing clothing to slip off, damaging items, and potentially posing safety hazards. Similarly, if the elongation of the sheet is unsatisfactory, it will not deform properly under stress on the hanger arm, also affecting the anti-slip effect. However, existing tensile testing devices cannot accurately and efficiently test the characteristics of anti-slip soft rubber sheets for clothes hangers, making it difficult to accurately obtain key performance indicators such as tensile strength and elongation. This hinders the provision of robust data support for the research, development, production, and quality control of the soft rubber sheets. Therefore, the development of a dedicated tensile testing device for anti-slip soft rubber sheets for clothes hangers is urgently needed. Summary of the Invention

[0005] The purpose of this invention is to provide a film tensile testing device to solve the problem mentioned in the background art that the existing tensile testing devices cannot accurately and efficiently test the characteristics of anti-slip soft rubber film for clothes hangers.

[0006] To achieve the above objectives, this utility model provides a film tensile testing device, including an upper clamping component and a lower clamping component. The upper clamping component is driven to move up and down by a lifting screw component. The lower clamping component is fixed on a base. The upper and lower clamping components respectively clamp both ends of the film. The upper clamping component is driven to move up and down by the lifting screw component to perform tensile testing. The upper clamping component is provided with a clamping opening. Clamping plates are symmetrically installed in the clamping opening. The upper end of the clamping plate is rotatably connected to the inner wall of the clamping opening by a pin. A driving component is installed on the clamping plate. The driving component drives the clamping plates to flip, thereby clamping or opening them together.

[0007] This film tensile testing device consists of an upper clamping component, a lower clamping component, a lifting screw component, and a base. The upper clamping component is raised and lowered via the lifting screw component, while the lower clamping component is fixed to the base. During testing, both ends of the film are clamped by clamping plates within the clamping openings of the upper and lower clamping components, respectively. The upper clamping component is raised by the lifting screw component to apply tension to the film for tensile testing. The clamping plates are rotatably connected to the inner wall of the clamping opening via pins and are driven to rotate by a drive assembly, achieving clamping or opening actions.

[0008] Preferably, the upper clamping component and the lower clamping component have the same structure.

[0009] The upper and lower clamping components in this setup have the same structure, both equipped with clamping ports, clamping plates, drive components, and other parts. During the tensile test, the two components symmetrically clamp both ends of the film and work together to complete the tensile operation.

[0010] Preferably, the drive assembly includes a movable rod, a drive plate is mounted on the bottom end of the movable rod, a drive port is provided on one side of the clamping plate, the drive plate is engaged with the drive port, and the movable rod moves by the action of the abutment component, thereby driving the clamping plate to perform a clamping operation.

[0011] This drive assembly includes components such as a movable rod and a drive plate. The drive plate at the bottom of the movable rod engages with the drive port on one side of the clamping plate. When the movable rod moves under the action of the clamping component, the drive plate drives the clamping plate to rotate around the pivot pin, thereby achieving the clamping action.

[0012] Preferably, the outer end of the movable rod passes through the outer wall of the upper clamping component and is equipped with a handle.

[0013] This feature includes a movable rod extending through the outer wall of the upper clamping component and fitted with a handle. The operator can manually operate the handle to move the movable rod, thereby controlling the opening and closing of the clamping plate.

[0014] Preferably, a connecting rod is installed at the lower end of the movable rod, and the bottom end of the connecting rod is connected and fixed to the drive plate.

[0015] This setting includes a connecting rod installed at the lower end of the movable rod. The bottom end of the connecting rod is connected and fixed to the drive plate. The movement of the movable rod is transmitted to the drive plate through the connecting rod, causing the drive plate to rotate the clamping plate.

[0016] Preferably, the clamping component includes a fixed plate with a spring installed on it. A force-bearing plate is installed on the lower outer side of the movable rod. One end of the spring is pressed against the force-bearing plate. The force is transmitted to drive the drive assembly to move, thereby realizing the clamping action of the clamping plate. When the drive assembly is manually driven to move in the opposite direction against the spring, the clamping plate is opened.

[0017] This clamping mechanism consists of a fixed plate, a spring, and a force-bearing plate. One end of the spring abuts against the force-bearing plate, while the other end is fixed to the fixed plate. The spring force acts on the movable rod through the force-bearing plate, driving the drive assembly to move and achieve the clamping action of the clamping plate. When the spring force is manually overcome to drive the drive assembly in the opposite direction, the clamping plate opens.

[0018] Preferably, the fixing plate is threaded with an adjusting bolt, the end of which is connected to one end of a spring, and the adjusting bolt adjusts the clamping force of the spring by rotating it.

[0019] This setting includes a threaded adjustment bolt on the fixed plate. The end of the adjustment bolt is connected to one end of the spring. By rotating the adjustment bolt, the compression degree of the spring can be changed, thereby adjusting the spring's clamping force and thus adjusting the clamping force of the clamping plate on the film.

[0020] Preferably, the clamping surface of the clamping plate is fitted with a silicone pad.

[0021] This feature involves installing a silicone pad on the clamping surface of the clamping plate. The soft and high-friction properties of the silicone pad increase the friction between it and the film, preventing the film from slipping during testing.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] In this film tensile testing device, symmetrically mounted, flip-up clamping plates are installed within the clamping openings of the upper clamping component. A drive assembly drives the clamping plates to clamp or open, securely holding both ends of the film. Compared to traditional fixing methods, this adjustable clamping structure can accommodate soft films of different sizes and shapes, preventing slippage during tensile testing due to insecure clamping and ensuring the accuracy and reliability of test data. Simultaneously, silicone pads are installed on the clamping surfaces of the clamping plates, further increasing friction with the film, reducing damage to the film surface, and improving test stability.

[0024] The upper clamping component is driven to move up and down by a lifting screw component. Compared with traditional manual or complex driving methods, screw transmission has the characteristics of high precision and smooth transmission, which can achieve uniform and stable stretching of the film, making the testing process more in line with actual use scenarios and effectively improving testing efficiency. In addition, the operator can control the lifting screw component to precisely control the stretching speed and stretching distance, thereby accurately obtaining key performance indicators such as tensile strength and elongation of the film.

[0025] The clamping component in the drive assembly includes a spring and an adjusting bolt. By rotating the adjusting bolt, the clamping force of the spring can be changed, thereby flexibly adjusting the clamping force of the clamping plate on the film. This design not only meets the testing needs of films of different materials and thicknesses, but also avoids damage to the film due to excessive clamping force or slippage due to insufficient clamping force. This makes the testing device more versatile and adaptable, providing stronger data support for the research, development, production, and quality control of soft film. Attached Figure Description

[0026] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 is a structural schematic diagram of the upper clamping component in this utility model;

[0028] Figure 3 is a schematic diagram of the clamping plate in this utility model;

[0029] Figure 4 is a schematic diagram of the drive component in this utility model;

[0030] Figure 5 is a structural schematic diagram of the clamping component in this utility model;

[0031] The meanings of the labels in the diagram are as follows:

[0032] 1. Upper clamping component; 11. Clamping port; 12. Clamping plate; 121. Pin; 122. Drive port; 2. Lower clamping component; 3. Lifting screw component; 4. Base; 5. Drive assembly; 51. Movable rod; 52. Force plate; 53. Connecting rod; 54. Drive plate; 55. Handle; 6. Clamping component; 61. Fixing plate; 62. Adjusting bolt; 63. Spring. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] This utility model provides a film tensile testing device, as shown in Figures 1, 2, and 3. It includes an upper clamping component 1 and a lower clamping component 2. The upper clamping component 1 is driven to move up and down by a lifting screw component 3. The lifting screw component includes a screw that is driven to rotate by a motor. A slider is installed on the screw, and the slider moves up and down by rotating the screw, thereby driving the upper clamping component 1 to move up and down. The lower clamping component 2 is fixed on a base 4. The upper clamping component 1 and the lower clamping component 2 respectively clamp the two ends of the film. The upper clamping component 1 is driven to move up and down by the lifting screw component 3 to perform tensile testing. The upper clamping component 1 is provided with a clamping opening 11. Clamping plates 12 are symmetrically installed in the clamping opening 11. The upper end of the clamping plate 12 is rotatably connected to the inner wall of the clamping opening 11 by a pin 121. A driving component 5 is installed on the clamping plate 12. The driving component 5 drives the clamping plate 12 to flip, thereby clamping or opening with each other.

[0035] The film tensile testing device consists of an upper clamping component 1, a lower clamping component 2, a lifting screw component 3, and a base 4. The upper clamping component 1 is raised and lowered via the lifting screw component 3, while the lower clamping component 2 is fixed to the base 4. During testing, both ends of the film are clamped by the clamping opening 11 of the upper clamping component 1 and the corresponding clamping plates 12 within the clamping structure of the lower clamping component 2. The upper clamping component 1 is raised by the lifting screw component 3, applying tension to the film for tensile testing. The clamping plates 12 are rotatably connected to the inner wall of the clamping opening 11 via pins 121 and are driven to flip by the drive assembly 5, achieving clamping or opening actions. This structural design simplifies the film tensile testing operation. The lifting screw component 3 provides stable and controllable tension, ensuring test accuracy. The flippable clamping plates 12 can flexibly adapt to films of different shapes and sizes, enhancing the device's versatility. The drive assembly 5 controls the clamping or opening of the clamping plates 12, facilitating film loading and unloading and improving testing efficiency.

[0036] In this embodiment, as shown in FIG1, the upper clamping component 1 and the lower clamping component 2 have the same structure.

[0037] The upper clamping component 1 and the lower clamping component 2 have identical structures, both equipped with clamping ports 11, clamping plates 12, and drive components 5. During the tensile test, they symmetrically clamp both ends of the film, working together to complete the tensile operation. The identical structure simplifies the production and manufacturing process of the device and reduces costs; the symmetrical clamping structure ensures that the film is subjected to uniform force during the tensile process, avoiding film deformation or test result deviation due to uneven force, thus improving the reliability and scientific rigor of the test.

[0038] Specifically, as shown in Figures 1, 2, and 4, the drive assembly 5 includes a movable rod 51, a drive plate 54 is mounted on the bottom end of the movable rod 51, and a drive port 122 is provided on one side of the clamping plate 12. The drive plate 54 is engaged with the drive port 122. The movable rod 51 moves through the action of the abutment member 6, thereby driving the clamping plate 12 to perform a clamping operation.

[0039] The drive assembly 5 includes components such as a movable rod 51 and a drive plate 54. The drive plate 54 at the bottom of the movable rod 51 engages with the drive port 122 on one side of the clamping plate 12. When the movable rod 51 moves under the action of the clamping component 6, the drive plate 54 drives the clamping plate 12 to rotate around the pin 121, thereby realizing the clamping action. This drive method has a simple structure and direct transmission, and can accurately control the rotation angle of the clamping plate 12 to ensure that the clamping plate 12 reliably clamps the film. The snap-fit ​​design makes the connection between the drive assembly 5 and the clamping plate 12 stable, and there will be no loosening during the tensile test, ensuring the stability of the test process.

[0040] Furthermore, as shown in Figures 1, 2, and 4, the outer end of the movable rod 51 penetrates the outer wall of the upper clamping component 1 and is equipped with a handle 55.

[0041] The outer end of the movable rod 51 passes through the outer wall of the upper clamping component 1 and is fitted with a handle 55. The operator can manually operate the handle 55 to move the movable rod 51, thereby controlling the opening or closing of the clamping plate 12. The handle 55 allows the operator to operate the clamping plate 12 more conveniently and quickly without the need for additional tools, improving operational convenience. The intuitive manual operation method allows the operator to flexibly adjust the clamping force according to the actual condition of the film, enhancing the flexibility of testing.

[0042] Furthermore, as shown in Figures 1, 2, and 4, a connecting rod 53 is installed at the lower end of the movable rod 51, and the bottom end of the connecting rod 53 is connected and fixed to the drive plate 54.

[0043] A connecting rod 53 is installed at the lower end of the movable rod 51. The bottom end of the connecting rod 53 is connected and fixed to the drive plate 54. The movement of the movable rod 51 is transmitted to the drive plate 54 through the connecting rod 53, causing the drive plate 54 to rotate the clamping plate 12. The setting of the connecting rod 53 enhances the connection strength and stability between the movable rod 51 and the drive plate 54, ensuring effective force transmission. The reasonable connection structure helps the movable rod 51 to smoothly drive the drive plate 54, avoiding shaking or jamming, making the clamping action of the clamping plate 12 smoother, and improving the reliability of the testing device.

[0044] Furthermore, as shown in Figures 1, 2, and 5, the clamping component 6 includes a fixed plate 61, on which a spring 63 is installed. A force-bearing plate 52 is installed on the lower outer side of the movable rod 51. One end of the spring 63 is pressed against the force-bearing plate 52. Through the transmission of force, the drive assembly 5 is driven to move, thereby realizing the clamping action of the clamping plate 12. When the drive assembly 5 is manually driven to move in the opposite direction against the action of the spring 63, the clamping plate 12 is opened.

[0045] The clamping component 6 includes a fixed plate 61, a spring 63, and a force-bearing plate 52. One end of the spring 63 abuts against the force-bearing plate 52, and the other end is fixed to the fixed plate 61. The elastic force of the spring 63 acts on the movable rod 51 through the force-bearing plate 52, driving the drive assembly 5 to move and realize the clamping action of the clamping plate 12. When the drive assembly 5 is manually driven to move in the opposite direction against the action of the spring 63, the clamping plate 12 opens. Utilizing the elastic properties of the spring 63 to apply and release the clamping force provides a stable clamping force, ensuring that the film will not easily slip during testing. At the same time, the elastic force of the spring 63 allows the clamping plate 12 to automatically clamp the film, reducing the operator's steps and improving testing efficiency. The method of manually overcoming the elastic force of the spring 63 to open the clamping plate is simple to operate and easy to control.

[0046] Furthermore, as shown in Figure 5, an adjusting bolt 62 is threaded onto the fixing plate 61. The end of the adjusting bolt 62 is connected to one end of the spring 63. The adjusting bolt 62 adjusts the clamping force of the spring 63 by rotating it.

[0047] An adjusting bolt 62 is threaded onto the fixed plate 61. One end of the adjusting bolt 62 is connected to one end of the spring 63. By rotating the adjusting bolt 62, the compression degree of the spring 63 can be changed, thereby adjusting the clamping force of the spring 63 and consequently adjusting the clamping force of the clamping plate 12 on the film. This design allows the clamping force of the clamping plate 12 to be flexibly adjusted according to the material and thickness of different films, improving the applicability of the device. It avoids damage to the film due to excessive clamping force or slippage due to insufficient clamping force, ensuring the accuracy and reliability of the test results. The adjusting bolt 62 makes the adjustment of the clamping force simple and convenient, allowing operators to adjust it according to actual needs.

[0048] Furthermore, a silicone pad is installed on the clamping surface of the clamping plate 12.

[0049] A silicone pad is installed on the clamping surface of the clamping plate 12. The soft, high-friction properties of the silicone pad increase the friction between it and the film, preventing the film from slipping during testing. The use of the silicone pad effectively improves the clamping stability of the clamping plate 12 on the film, ensuring that the film will not slip during the tensile test and affect the test results. At the same time, the soft texture of the silicone pad reduces damage to the film surface, protects the integrity of the film, and allows the test results to more accurately reflect the tensile properties of the film.

[0050] When using the film tensile testing device of this utility model, the operator first grasps the handle 55 at the outer end of the movable rod 51, overcoming the elastic force of the spring 63 in the clamping component 6, and drives the movable rod 51 to move in the opposite direction. At this time, the drive plate 54 connected to the lower end of the movable rod 51 through the connecting rod 53 is released from the constraint of the locking engagement with the drive port 122 on one side of the clamping plate 12, causing the clamping plate 12 to flip and open around the pin 121. The two ends of the soft rubber film to be tested are placed in the clamping port 11 of the upper clamping component 1 and the corresponding clamping structure of the lower clamping component 2, respectively.

[0051] When handle 55 is released, the spring 63 in the clamping component 6, under its elastic force, transmits the force to the movable rod 51 through the clamping plate 52, causing the drive plate 54 to engage with the drive port 122, thereby causing the clamping plate 12 to rotate around the pin 121 and clamp the film. By rotating the adjusting bolt 62 on the fixing plate 61, the compression degree of the spring 63 can be changed, thereby flexibly adjusting the clamping force of the spring 63 to ensure that the clamping plate 12 clamps the film with a suitable clamping force, which can prevent the film from slipping and will not damage the film due to excessive clamping force. At the same time, the silicone pad installed on the clamping surface of the clamping plate 12, with its soft and high friction characteristics, further increases the friction between the pad and the film, improving the clamping stability.

[0052] After the film is clamped, the motor in the lifting screw assembly 3 is started, and the motor drives the screw to rotate. As the screw rotates, the slider mounted on it rises and falls under the action of the threaded transmission, thereby causing the upper clamping assembly 1 to rise smoothly. Since the lower clamping assembly 2 is fixed to the base 4, the rise of the upper clamping assembly 1 causes the two ends of the film to experience gradually increasing tension, initiating the tensile test. During the tensile process, the upper clamping assembly 1 and the lower clamping assembly 2 have identical structures and clamp the film symmetrically, ensuring uniform force on the film and avoiding deviations in test results due to uneven force.

[0053] Operators can visually understand the status of the drive assembly 5 by observing the handle 55. If the film is found to be loosely clamped, the clamping force of the clamping plate 12 can be adjusted by operating the handle 55 again. At the same time, according to the testing requirements of different films, the lifting speed and distance of the lifting screw assembly 3 can be precisely controlled by controlling the motor speed and number of rotations, thereby accurately controlling the stretching speed and stretching amount of the film and ensuring that the testing process meets the standards and actual requirements.

[0054] When the film reaches the predetermined stretch level or breaks, the motor stops operating, the lifting screw component 3 stops moving, and the tensile test ends. At this point, by measuring the film's elongation, recording the maximum tensile force during the stretching process, and combining this data with relevant calculation formulas, key performance indicators such as the film's tensile strength and elongation can be obtained, providing accurate data support for evaluating the film's quality and suitability.

[0055] Finally, it should be noted that the electronic components in the lifting screw component 3 and other components in this embodiment are all general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components are connected by wires. The specific connection method should refer to the working order between each electrical component in the above working principle to complete the electrical connection. All of these are technologies known in the art.

[0056] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A film tensile testing device, comprising an upper clamping component (1) and a lower clamping component (2), characterized in that: The upper clamping component (1) is driven to move up and down by the lifting screw component (3). The lower clamping component (2) is fixed on the base (4). The upper clamping component (1) and the lower clamping component (2) respectively clamp the two ends of the film. The upper clamping component (1) is driven to move up and down by the lifting screw component (3) to perform a tensile test. The upper clamping component (1) is provided with a clamping port (11). A clamping plate (12) is symmetrically installed in the clamping port (11). The upper end of the clamping plate (12) is rotatably connected to the inner wall of the clamping port (11) by a pin (121). A driving component (5) is installed on the clamping plate (12). The driving component (5) drives the clamping plate (12) to flip, thereby clamping or opening with each other.

2. The film tensile testing device according to claim 1, characterized in that: The upper clamping component (1) and the lower clamping component (2) have the same structure.

3. The film tensile testing device according to claim 1, characterized in that: The drive assembly (5) includes a movable rod (51), a drive plate (54) is installed at the bottom of the movable rod (51), and a drive port (122) is provided on one side of the clamping plate (12). The drive plate (54) is engaged with the drive port (122). The movable rod (51) moves by the action of the abutment component (6), thereby driving the clamping plate (12) to perform clamping operation.

4. The film tensile testing device according to claim 3, characterized in that: The outer end of the movable rod (51) passes through the outer wall of the upper clamping component (1) and is equipped with a handle (55).

5. The film tensile testing device according to claim 3, characterized in that: A connecting rod (53) is installed at the lower end of the movable rod (51), and the bottom end of the connecting rod (53) is connected and fixed to the drive plate (54).

6. The film tensile testing device according to claim 3, characterized in that: The clamping component (6) includes a fixed plate (61), on which a spring (63) is installed. A force plate (52) is installed on the lower outer side of the movable rod (51). One end of the spring (63) is pressed against the force plate (52). Through the transmission of force, the drive assembly (5) is driven to move, thereby realizing the clamping action of the clamping plate (12). When the drive assembly (5) is manually driven to move in the opposite direction against the action of the spring (63), the clamping plate (12) is opened.

7. The film tensile testing device according to claim 6, characterized in that: An adjusting bolt (62) is threaded onto the fixing plate (61). The end of the adjusting bolt (62) is connected to one end of the spring (63). The adjusting bolt (62) adjusts the clamping force of the spring (63) by rotating it.

8. The film tensile testing device according to claim 1, characterized in that: The clamping surface of the clamping plate (12) is fitted with a silicone pad.

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