Clamping device for stretching detection of PE film

Abstract

The utility model discloses a clamping device for PE (Poly Ethylene) film stretching detection, which belongs to the technical field of PE film stretching and comprises a main body, two sides of the main body are fixedly connected with fixing rods, the two fixing rods are connected with a discharging roller through rotating shafts, and two sides of the main body are fixedly connected with side walls. According to the clamping device for PE film stretching detection, a stabilizing block drives a torsion spring to rotate around a rotating shaft, at the moment, a PE film on a discharging roller can be placed in front of the stabilizing shafts, at the moment, the stabilizing block can be loosened, the stabilizing block is driven to reset through rebounding of the torsion spring, and therefore the two stabilizing shafts press the PE film tightly; when the sample is pulled, the PE film is clamped and rotated through the upper stable shaft and the lower stable shaft, and after the pulling is completed, the electric telescopic block can be started to drive the cutting knife to cut the PE film, so that the sample can be kept in a straight state when the sample is pulled, and the flatness can be always ensured while the sample is cut.

Description

Technical Field

[0001] This utility model belongs to the field of PE film stretching technology, specifically a clamping device for PE film stretching testing. Background Technology

[0002] PE film is a thin polyethylene film commonly used to protect mobile phone screens. Applying PE film to mobile phone glass provides some protection, preventing scratches, fingerprints, and minor impacts. It also repels grease, dust, and other contaminants, offering temporary protection. After production, PE film typically undergoes tensile testing. However, current testing methods require cutting the PE film into strips of a specific size. This cutting is usually done by a machine that slides a blade from one side, which can easily result in uneven cut edges. Utility Model Content

[0003] To overcome the above-mentioned defects, this utility model provides a clamping device for PE film tensile testing, which solves the problem that when cutting PE film, the machine usually slides a blade from one side to cut the PE film, which easily leads to uneven cut edges.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a clamping device for PE film tensile testing, comprising a main body, fixed rods fixedly connected to both sides of the main body, a discharge roller connected to the two fixed rods via a rotating shaft, side walls fixedly connected to both sides of the main body, a fixed block fixedly connected to the top of the side wall, a rotating shaft movably connected to one side of the two fixed blocks, a connecting block fixedly connected to one side of the fixed blocks, a torsion spring fixedly connected to one side of the connecting block, the torsion spring being sleeved on the outer arc surface of the rotating shaft, stabilizing blocks fixedly connected to the outer arc surface of the rotating shaft and the top of the main body respectively, stabilizing shafts connected to the sides of the two sets of stabilizing blocks that are close to each other via rotating shafts, an electric telescopic block fixedly connected to one side of the stabilizing block, and a cutting blade fixedly connected to one side of the electric telescopic block.

[0005] As a further embodiment of this utility model: a movable groove is provided on one inner wall of the side wall, and a servo motor is fixedly connected in the movable groove.

[0006] As a further embodiment of this utility model: the output end of the servo motor is fixedly connected to a threaded rod, and the other end of the threaded rod is movably connected to the inner wall of the moving groove.

[0007] As a further embodiment of this utility model: a movable block is slidably connected to the external thread of the threaded rod, and a cylinder telescopic rod is fixedly connected to one side of the movable block.

[0008] As a further embodiment of this utility model: the output end of the cylinder telescopic rod is fixedly connected to a pull block, and the two ends of the pull block are connected to a connecting rod by pins.

[0009] As a further embodiment of this utility model: one end of the linkage rod is connected to a clamping block by a pin, and one side of the clamping block is connected to the cylinder telescopic rod by a pin.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. This clamping device for PE film tensile testing consists of a stabilizing block, a torsion spring, and a discharge roller. First, the upper stabilizing block is moved, causing the torsion spring to rotate around the shaft. At this time, the PE film on the discharge roller can be placed in front of the stabilizing shaft. After placement, the stabilizing block can be released, and the return of the torsion spring causes the stabilizing block to reset. The reset stabilizing shafts then press the PE film together. When stretched, the PE film is clamped and rotated by the upper and lower stabilizing shafts. After stretching, the electric telescopic block can be activated, which will drive the corresponding upper and lower cutting blades to cut the PE film, ensuring that the sample remains straight during stretching and that flatness is maintained during cutting.

[0012] 2. This clamping device for PE film stretch testing comprises a cylinder telescopic rod, a pull block, a clamping block, and a connecting rod. Activating the cylinder telescopic rod causes the pull block to extend and retract. When the pull block extends forward, it pulls the connecting rod away from the clamping block. When the PE film is positioned between the two clamping blocks, the cylinder telescopic rod moves the pull block backward, causing it to move the connecting rod to close the clamping blocks on both sides, clamping and moving the PE film. At this point, a servo motor drives a threaded rod to rotate. As the threaded rod rotates, the clamping block moves along it, pulling the PE film from the discharge roller. Once stretched to the appropriate length, the film can be cut. This device allows for control over the required cutting length, facilitating clamping and fixing while maintaining flatness and controlling the size of the PE film. Attached Figure Description

[0013] Figure 1 is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 is a schematic diagram of the structure of the stabilizing block and the electric telescopic block of this utility model;

[0015] Figure 3 is a schematic diagram of the side wall and servo motor structure of this utility model;

[0016] Figure 4 is a schematic diagram of the moving block and pulling block structure of this utility model;

[0017] In the diagram: 1. Main body; 2. Fixed rod; 3. Discharge roller; 4. Side wall; 5. Servo motor; 6. Moving groove; 7. Threaded rod; 8. Moving block; 9. Pulling block; 10. Linking rod; 11. Clamping block; 12. Fixed block; 13. Rotating shaft; 14. Torsion spring; 15. Stabilizing block; 16. Stabilizing shaft; 17. Electric telescopic block; 18. Connecting block; 19. Cutting blade; 20. Cylinder telescopic rod. Detailed Implementation

[0018] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0019] As shown in Figures 1-4, this utility model provides a technical solution: a clamping device for PE film tensile testing, including a main body 1, side walls 4 fixedly connected to both sides of the main body 1, a moving groove 6 opened on one inner wall of the side wall 4, a servo motor 5 fixedly connected in the moving groove 6, and fixed rods 2 fixedly connected to both sides of the main body 1. The two fixed rods 2 are connected to a discharge roller 3 through a rotating shaft. By setting the discharge roller 3, when a PE film roll is put in, the PE film roll is pulled and the discharge roller 3 is driven to rotate between the two sets of fixed rods 2, so that the PE film roll can move on the top of the main body 1.

[0020] The output end of the servo motor 5 is fixedly connected to a threaded rod 7, and the other end of the threaded rod 7 is movably connected to the inner wall of the moving groove 6. A moving block 8 is slidably connected to the external thread of the threaded rod 7. A cylinder telescopic rod 20 is fixedly connected to one side of the moving block 8. A pull block 9 is fixedly connected to the output end of the cylinder telescopic rod 20. A connecting rod 10 is connected to both ends of the pull block 9 by pins. A clamping block 11 is connected to one end of the connecting rod 10 by pins. One side of the clamping block 11 is connected to the cylinder telescopic rod 20 by pins. Through the setting of the cylinder telescopic rod 20 and the connecting rod 10, the output end of the cylinder telescopic rod 20 drives the connecting rod 10 to move, so that one end of the two sets of clamping blocks 11 moves closer to each other and pulls and clamps the PE film.

[0021] A fixing block 12 is fixedly connected to the top of the side wall 4. A rotating shaft 13 is movably connected to one side of the two fixing blocks 12. A connecting block 18 is fixedly connected to one side of the fixing block 12. A torsion spring 14 is fixedly connected to one side of the connecting block 18. The torsion spring 14 is sleeved on the outer arc surface of the rotating shaft 13. A stabilizing block 15 is fixedly connected to the outer arc surface of the rotating shaft 13 and the top of the main body 1, respectively. The two sets of stabilizing blocks 15 are connected to a stabilizing shaft 16 on the side that is close to each other through a rotating shaft. Through the setting of the stabilizing shaft 16, the upper and lower stabilizing shafts 16 clamp the PE film at the same time. When the PE film is stretched, it is rotated through the stabilizing shaft 16 to make the PE film flatter when stretched.

[0022] An electric telescopic block 17 is fixedly connected to one side of the stabilizing block 15, and a cutting blade 19 is fixedly connected to one side of the electric telescopic block 17. Through the arrangement of the electric telescopic block 17 and the cutting blade 19, the two electric telescopic blocks 17 drive the corresponding cutting blades 19 to perform interlocking cutting, making the PE film cut more even and preventing unevenness at the cut.

[0023] The working principle of this utility model is as follows: First, the cylinder telescopic rod 20 is activated to drive the pull block 9 to extend and retract. When the pull block 9 extends and retracts forward, it pulls the connecting rod 10 and the clamping block 11 apart. Then, the upper stabilizing block 15 is pried open, causing the two sets of stabilizing blocks 15 to move away from each other, compressing the torsion spring 14 until the PE film passes through the two sets of stabilizing blocks 15. After the PE film is released, the torsion spring 14 will drive the stabilizing block 15 to return to its original position, pressing the PE film. Once the PE film is pressed, it can be moved forward by the cylinder telescopic rod 20. The end drives the pull block 9 to move backward, causing the pull block 9 to drive the connecting rod 10 to control the clamping blocks 11 on both sides to close and clamp and fix the PE film. Then, the servo motor 5 drives the threaded rod 7 to rotate. When the threaded rod 7 rotates, it drives the movable clamping block 11 to move and pull the PE film on the discharge roller 3. When pulling, the PE film is clamped and rotated by the upper and lower stabilizing shafts 16. After the pulling is completed, the electric telescopic block 17 can be activated to drive the cutting blade 19 to cut the PE film.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A clamping device for testing the tensile strength of PE film, comprising a main body (1), characterized in that: The main body (1) is fixedly connected to two sides with fixed rods (2), and the two fixed rods (2) are connected to a discharge roller (3) through a rotating shaft. The main body (1) is fixedly connected to two sides with sidewalls (4), and the top of the sidewalls (4) is fixedly connected to a fixed block (12). The two fixed blocks (12) are movably connected to a rotating shaft (13) on one side. The fixed block (12) is fixedly connected to a connecting block (18) on one side. The connecting block (18) is fixedly connected to a torsion spring (14) on one side. The torsion spring (14) is sleeved on the outer arc surface of the rotating shaft (13). The outer arc surface of the rotating shaft (13) and the top of the main body (1) are respectively fixedly connected to a stabilizing block (15). The two sets of stabilizing blocks (15) are respectively connected to a stabilizing shaft (16) through a rotating shaft on the side that is close to each other. The stabilizing block (15) is fixedly connected to an electric telescopic block (17) on one side. The electric telescopic block (17) is fixedly connected to a cutting blade (19) on one side.

2. The clamping device for PE film tensile testing according to claim 1, characterized in that: A movable groove (6) is provided on one inner wall of the side wall (4), and a servo motor (5) is fixedly connected in the movable groove (6).

3. The clamping device for PE film tensile testing according to claim 2, characterized in that: The output end of the servo motor (5) is fixedly connected to a threaded rod (7), and the other end of the threaded rod (7) is movably connected to the inner wall of the moving groove (6).

4. The clamping device for PE film tensile testing according to claim 3, characterized in that: The threaded rod (7) is slidably connected to a movable block (8) at its external thread, and a cylinder telescopic rod (20) is fixedly connected to one side of the movable block (8).

5. The clamping device for PE film tensile testing according to claim 4, characterized in that: The output end of the cylinder telescopic rod (20) is fixedly connected to a pull block (9), and the two ends of the pull block (9) are connected to a connecting rod (10) by pins.

6. The clamping device for PE film tensile testing according to claim 5, characterized in that: One end of the linkage rod (10) is connected to a clamping block (11) by a pin, and one side of the clamping block (11) is connected to the cylinder telescopic rod (20) by a pin.

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