A device for detecting tensile strength of plastic film
By designing the combination of the winding and placement rollers, the limiting plate, and the metering device, the problem of low detection efficiency of existing devices for films of different lengths was solved, and efficient detection of tensile strength of plastic films was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU QIANRUN NEW MATERIAL TECH CO LTD
- Filing Date
- 2025-06-08
- Publication Date
- 2026-07-14
AI Technical Summary
Existing plastic film tensile strength testing devices need to be adapted to the film length, resulting in low operating efficiency when testing longer films.
A detection device was designed, comprising a winding and placing roller, a limiting plate, a displacement block, and a meter. The winding and placing roller winds up the film, and the displacement block and the limiting plate work together to clamp and fix films of different lengths and perform tensile testing. The meter measures the tensile force.
This technology enables efficient tensile strength testing of plastic films of different lengths, improving operational convenience and practicality.
Smart Images
Figure CN224500221U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic film technology, specifically to a device for testing the tensile strength of plastic films. Background Technology
[0002] PVC, primarily composed of polyvinyl chloride, is widely used in packaging films. After processing, existing PVC plastic films need to be cut to a fixed length for tensile strength testing. This typically involves measuring the deformation of the film under the same weight conditions to determine its tensile strength. However, some existing tensile strength testing devices use films of a fixed length. This necessitates preparing a device of appropriate length for longer films, significantly reducing operational efficiency. Therefore, this paper proposes a new tensile strength testing device for plastic films. Utility Model Content
[0003] (a) Technical problems to be solved
[0004] To address the shortcomings of existing technologies, this invention provides a device for testing the tensile strength of plastic films, thus solving the problems mentioned in the background section.
[0005] (II) Technical Solution
[0006] To achieve the above objectives, this utility model provides the following technical solution: a plastic film tensile strength testing device, comprising a base plate, a connecting post connected to the base plate and capable of extending upward, a connecting plate connected to the connecting post, a displacement plate capable of displacement within the connecting plate, a displacement placement box capable of displacement within the displacement plate, a winding and placement roller for winding and placing plastic film within the displacement placement box, a limiting plate for limiting the position of the plastic film on the winding and placement roller within the displacement placement box, a displacement block capable of vertical displacement along the surface of the connecting post within the connecting post, a connecting box connected to the displacement block, a first displacement plate capable of movement within the connecting box, and a second displacement plate capable of movement within the connecting box. The first and second displacement plates are used to clamp and fix the plastic film in the winding and placement roller. A measuring device is provided in the connecting plate to drive the displacement placement box to move and to measure the tensile force of the plastic film in the displacement placement box during the displacement process.
[0007] Furthermore, the connecting plate is provided with a displacement plate that can move laterally along the interior of the connecting plate. The displacement plate is provided with a displacement placement box that can move vertically along the wall of the displacement plate. The take-up and place roller is detachably installed in the displacement placement box. The displacement placement box is provided with a limiting plate that can be on the same horizontal plane as the take-up and place roller and can move. The first displacement plate can move laterally along the interior of the connecting box, and the second displacement plate can move laterally along the interior of the connecting box. The first displacement plate and the second displacement plate can move relative to each other. The measuring instrument is a tension gauge, which can be connected to the displacement placement box. The tension gauge can drive the displacement placement box to move upward.
[0008] Furthermore, the take-up and placement roller is bearing-mounted at the bottom of the displacement placement box. The bottom of the displacement placement box is equipped with locking blocks that limit and lock both ends of the take-up and placement roller. The displacement placement box contains a guide rod that can be loosely fitted within it. The guide rod guides the displacement of the limiting plate. The walls of the first and second displacement plates are respectively provided with protruding plates, which have oblique teeth. These oblique teeth on the protruding plates can be set at a 45° angle, which improves the interlocking force between the first and second displacement plates and the plastic film, preventing the plastic film from detaching.
[0009] Furthermore, the connecting plate is provided with a displacement plate self-locking drive cylinder that can drive the displacement plate to move laterally. The top of the displacement plate is provided with a displacement placement box drive cylinder that can be connected to the meter and can drive the displacement placement box to move up and down. The displacement placement box is provided with a limit plate drive cylinder that can drive the limit plate to move. The connecting box is provided with a self-locking first displacement plate self-locking drive cylinder that can drive the first displacement plate to move. The displacement block is provided with a second displacement plate adjusting bearing nut that can drive the second displacement plate to move. The displacement block is provided with a locking guide rod that can guide and lock the displacement of the second displacement plate. The bottom of the connecting box is provided with a locking nut that can be inserted into the locking guide rod.
[0010] Furthermore, the displacement placement box is equipped with a position sensor, and the connecting box is equipped with a position receiver corresponding to the position sensor. The position sensor and position receiver facilitate adaptive adjustment of the displacement plate, ensuring that the position of the film exiting the winding placement roller remains on the same vertical plane as the center point between the first and second displacement plates, preventing the plastic film from tilting.
[0011] Furthermore, the displacement block is provided with a displacement block locking nut on its exterior, which can be inserted into the connecting column and can lock the small vertical displacement of the displacement block.
[0012] Furthermore, a support rib is installed between the base plate and the connecting plate.
[0013] This tensile tester cannot directly display tensile strength, but it can be indirectly calculated by measuring the maximum tensile force and cross-sectional area. This information can be retrieved.
[0014] The specific operation of this scheme is as follows: The plastic film is wound onto the surface of the winding and placing roller, and then the winding and placing roller is installed in the displacement placing box. This facilitates subsequent operations. Then, the height of the displacement block is adjusted according to the plastic film to test the tensile strength of the plastic film of variable length. When testing is required, the plastic film on the surface of the winding and placing roller is first pressed by the limiting plate, and then the bottom end of the plastic film is pressed by the first displacement plate and the second displacement plate in the connecting box. This allows the displacement placing box to be moved upward by the displacement placing box drive cylinder, so that the plastic film can be subjected to a tensile test until it breaks. The force value can then be known through the measuring instrument. Compared with the prior art, this plastic film tensile strength testing device, by setting a winding placement roller in the displacement placement box, can wind the plastic film into the winding placement roller. Then, when performing tensile strength testing, the plastic film in the winding placement roller can pass through the first displacement plate and the second displacement plate in the connecting box. In this way, by adjusting the height of the displacement block that can move up and down, tensile strength testing can be performed on plastic films of different lengths, greatly improving its convenience and practicality. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a partial cross-sectional structural diagram of the present invention;
[0017] Figure 3 This is a partial cross-sectional structural diagram of the present invention;
[0018] Figure 4 This is a schematic diagram of the structure of the displacement placement box of this utility model;
[0019] Figure 5 This is a schematic diagram of the structure of the connecting box of this utility model;
[0020] Figure 6 This utility model Figure 1Schematic diagram of the structure on the back. In the diagram: 1. Base plate; 2. Connecting column; 3. Connecting plate; 4. Displacement plate; 5. Displacement placement box; 6. Rewinding placement roller; 7. Limiting plate; 8. Displacement block; 9. Connecting box; 10. First displacement plate; 11. Second displacement plate; 12. Measuring device; 13. Locking block; 14. Guide rod; 15. Protruding plate; 16. Displacement plate self-locking drive cylinder; 17. Displacement placement box drive cylinder; 18. Limiting plate drive cylinder; 19. Second displacement plate adjusting bearing nut; 20. Locking guide rod; 21. Displacement block locking nut; 22. Self-locking first displacement plate self-locking drive cylinder; 23. Locking nut. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0022] Please see Figures 1 to 6This utility model provides a technical solution: a plastic film tensile strength testing device, including a base plate 1, a connecting post 2 connected to the base plate 1 and extending upward, a connecting plate 3 connected to the connecting post 2, a displacement plate 4 in the connecting plate 3, a displacement placement box 5 in the displacement plate 4, a winding and placement roller 6 in the displacement placement box 5 for winding and placing plastic film, a limiting plate 7 in the displacement placement box 5 for limiting the plastic film on the winding and placement roller 6, a displacement block 8 in the connecting post 2 that can move up and down along the surface of the connecting post 2, a connecting box 9 connected to the displacement block 8, and a displacement block 9 having a displacement block 8 for moving up and down. The first displacement plate 10 is movable, and the connecting box 9 is provided with a second displacement plate 11 that can move. The first displacement plate 10 and the second displacement plate 11 can be used to clamp and fix the plastic film in the take-up and place roller 6. The connecting plate 3 is provided with a measuring device 12 that can drive the displacement place box 5 to move and measure the tension of the plastic film in the displacement place box 5 during the displacement process. The connecting plate 3 is provided with a displacement plate 4 that can move laterally along the interior of the connecting plate 3. The displacement plate 4 is provided with a displacement place box 5 that can move up and down along the wall of the displacement plate 4. The take-up and place roller 6 is detachably installed in the displacement place box 5. The displacement place box 5 is provided with a limiting plate 7 that can be on the same horizontal plane as the take-up and place roller 6 and can move. The first displacement plate 10 is movable. The first displacement plate 10 and the second displacement plate 11 can move laterally along the interior of the connecting box 9. The first displacement plate 10 and the second displacement plate 11 can move relative to each other. The measuring device 12 is a tension gauge, which can be connected to the displacement placement box 5. The tension gauge can drive the displacement placement box 5 to move upward. The winding placement roller 6 is mounted at the bottom of the displacement placement box 5 with a bearing. The bottom of the displacement placement box 5 is provided with a locking block 13 that can limit and lock both ends of the winding placement roller 6. The displacement placement box 5 is provided with a guide rod 14 that can be loosely fitted with the displacement placement box 5. The guide rod 14 is used to guide the displacement of the limiting plate 7. The walls of the first displacement plate 10 and the second displacement plate 11 are respectively provided with protruding plates 1. 5. The raised plate 15 is provided with oblique teeth. The outside of the connecting plate 3 is provided with a displacement plate self-locking drive cylinder 16 that can drive the displacement plate 4 to move laterally. The top of the displacement plate 4 is provided with a displacement placement box drive cylinder 17 that can be connected to the meter 12 and can drive the displacement placement box 5 to move up and down. The outside of the displacement placement box 5 is provided with a limit plate drive cylinder 18 that can drive the limit plate 7 to move. The outside of the connecting box 9 is provided with a self-locking first displacement plate self-locking drive cylinder 22 that can drive the first displacement plate 10 to move. The outside of the displacement block 8 is provided with a second displacement plate adjusting bearing nut 19 that can drive the second displacement plate 11 to move. The outside of the displacement block 8 is provided with a locking guide rod 20 that can guide and lock the displacement of the second displacement plate 11.The bottom of the connecting box 9 is equipped with a locking nut 23 that can be inserted into the locking guide rod 20. The displacement placement box 5 contains a position sensor, and the connecting box 9 contains a position receiver corresponding to the position sensor. The exterior of the displacement block 8 is equipped with a displacement block locking nut 21 that can be inserted into the connecting post 2 and can lock the small vertical displacement of the displacement block 8. Support ribs are installed between the base plate 1 and the connecting plate 3.
[0023] All electrical components mentioned in this article are connected to an external main controller and 380V commercial power supply, and the main controller can be a conventional known device such as a computer that can control it.
[0024] In the description of this specification, the terms "connection," "installation," "fixing," and "setting" are interpreted broadly. For example, "connection" can mean a fixed connection or an indirect connection via an intermediate component without affecting the relationship between components and the technical effect. It can also mean an integral connection or a partial connection. As in this example, those skilled in the art can understand the specific meaning of the above terms in this utility model or utility model according to the specific circumstances. The above description is only a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the protection scope of this utility model.
Claims
1. A device for testing the tensile strength of plastic film, comprising a base plate (1), characterized in that: The base plate (1) is provided with a connecting post (2) connected to the base plate (1) and the connecting post (2) can extend upward. The connecting post (2) is provided with a connecting plate (3) connected to the connecting post (2). The connecting plate (3) is provided with a displacement plate (4) that can be displaced. The displacement plate (4) is provided with a displacement placement box (5) that can be displaced. The displacement placement box (5) is provided with a winding placement roller (6) that can be used for winding and placing plastic film. The displacement placement box (5) is provided with a limiting plate (7) that can limit the plastic film on the winding placement roller (6). The connecting post (2) is provided with a plate that can move along the connecting post ( 2) A displacement block (8) that moves up and down on the surface. The displacement block (8) is provided with a connecting box (9) connected to the displacement block (8). The connecting box (9) is provided with a first displacement plate (10) that can move. The connecting box (9) is provided with a second displacement plate (11) that can move. The first displacement plate (10) and the second displacement plate (11) can be used to clamp and fix the plastic film in the winding and placing roller (6). The connecting plate (3) is provided with a measuring device (12) that can drive the displacement placing box (5) to move and can measure the tension of the plastic film in the displacement placing box (5) during the displacement process.
2. The plastic film tensile strength testing device according to claim 1, characterized in that: The connecting plate (3) is provided with a displacement plate (4) that can move laterally along the interior of the connecting plate (3). The displacement plate (4) is provided with a displacement placement box (5) that can move up and down along the wall of the displacement plate (4). The take-up placement roller (6) is detachably installed in the displacement placement box (5). The displacement placement box (5) is provided with a limiting plate (7) that can be on the same horizontal plane as the take-up placement roller (6) and can move. The first displacement plate (10) can move laterally along the interior of the connecting box (9). The second displacement plate (11) can move laterally along the interior of the connecting box (9). The first displacement plate (10) and the second displacement plate (11) can move relative to each other. The measuring device (12) is a tension gauge. The tension gauge can be connected to the displacement placement box (5). The tension gauge can drive the displacement placement box (5) to move upward.
3. The plastic film tensile strength testing device according to claim 2, characterized in that: The take-up placement roller (6) is mounted in a bearing manner at the bottom of the displacement placement box (5). The bottom of the displacement placement box (5) is provided with a locking block (13) that can limit and lock both ends of the take-up placement roller (6). The displacement placement box (5) is provided with a guide rod (14) that can be loosely fitted with the displacement placement box (5). The guide rod (14) is used to guide the displacement of the limiting plate (7). The first displacement plate (10) and the second displacement plate (11) are respectively provided with protruding plates (15). The protruding plates (15) are provided with oblique teeth.
4. The plastic film tensile strength testing device according to claim 3, characterized in that: The connecting plate (3) is provided with a displacement plate self-locking drive cylinder (16) that can drive the displacement plate (4) to move laterally. The top of the displacement plate (4) is provided with a displacement placement box drive cylinder (17) that can be connected to the meter (12) and can drive the displacement placement box (5) to move up and down. The displacement placement box (5) is provided with a limit plate drive cylinder (18) that can drive the limit plate (7) to move. The connecting box (9) is provided with a self-locking first displacement plate self-locking drive cylinder (22) that can drive the first displacement plate (10) to move. The displacement block (8) is provided with a second displacement plate adjusting bearing nut (19) that can drive the second displacement plate (11) to move. The displacement block (8) is provided with a locking guide rod (20) that can guide and lock the displacement of the second displacement plate (11). The bottom of the connecting box (9) is provided with a locking nut (23) that can be inserted into the locking guide rod (20).
5. The plastic film tensile strength testing device according to claim 4, characterized in that: The displacement placement box (5) is equipped with a position sensor, and the connection box (9) is equipped with a position receiver corresponding to the position sensor.
6. The plastic film tensile strength testing device according to claim 1, characterized in that: The displacement block (8) is provided with a displacement block locking nut (21) on its outside, which can be inserted into the connecting column (2) and can lock the small vertical displacement of the displacement block (8).
7. The plastic film tensile strength testing device according to claim 1, characterized in that: A support rib is installed between the base plate (1) and the connecting plate (3).