Device for testing elongation at break of antibacterial film

Abstract

The utility model discloses a device for testing the elongation at break of an antibacterial film, which relates to the field of antibacterial films and comprises a test board, the outer wall of a winder is provided with an insertion hole, an extrusion plate is mounted in the insertion hole, the top of the extrusion plate is connected with a driving rod, the end of the driving rod is fixedly provided with a push block, and the end of the push block is provided with a push rod. And a spring is mounted at the top of the extrusion plate. The problem that the clamping position of an antibacterial film is easy to tear and break due to rigid clamping of the antibacterial film by a clamp is solved, the extrusion plate is pushed upwards, then the end of the film is inserted into the insertion hole, the spring extrudes and fixes the film in the insertion hole through the extrusion plate, and the rolling device rotates through self rotation, so that the clamping position of the antibacterial film is fixed. According to the winding device, the end portion of the thin film is wound, the thin film is fixed to the outer wall of the winding device through contact friction between the thin film and the winding device, and therefore the thin film cannot be broken due to external mechanical extrusion in the thin film testing process.

Description

Technical Field

[0001] This utility model relates to the field of antibacterial films, specifically a device for testing the elongation at break of antibacterial films. Background Technology

[0002] Antibacterial film is a polymer material with special functions. By adding antibacterial agents to the film matrix or using surface modification technology, it can inhibit or kill bacteria, fungi and other microorganisms. With its excellent antibacterial properties, good flexibility and barrier properties, antibacterial film is widely used in food packaging, medical and health care, agriculture and other fields, and plays an important role in ensuring product safety and extending product shelf life.

[0003] In the quality testing of antibacterial films, elongation at break is a key indicator for measuring their mechanical properties. It reflects the film's ability to deform during the stretching process until it breaks. Currently, the test of elongation at break of antibacterial films usually involves clamping the film sample between the fixtures of a tensile testing machine, stretching the film at a uniform speed, recording the elongation at break, and then calculating the elongation at break.

[0004] However, the traditional method of mechanically clamping antibacterial films uses rigid clamps to directly apply pressure to the film. Because antibacterial films are thin and soft, they are prone to tearing and breaking at the clamping point during the clamping process. This premature breakage caused by uneven force means that the film does not reach the true breaking point under normal tension, which ultimately leads to inaccurate test results for antibacterial films and introduces errors into product quality assessment. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a device for testing the elongation at break of antibacterial films, so as to solve the technical problem that the rigid clamping of antibacterial films by clamps can easily cause tearing and breakage at the clamping point of the antibacterial film.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for testing the elongation at break of an antibacterial film, comprising a test platform, a controller mounted on the top of the test platform, a hydraulic cylinder fixed at the top of the test platform, a fixing frame provided at the end of the hydraulic cylinder and the top of the test platform, a winding device movably mounted on the inner wall of the fixing frame, an insertion hole provided on the outer wall of the winding device, an extrusion plate installed inside the insertion hole, a drive rod connected to the top of the extrusion plate, a push block fixed at the end of the drive rod, and a spring mounted on the top of the extrusion plate.

[0007] By adopting the above technical solution, the problem that rigid clamping of antibacterial films is prone to tearing and breaking at the clamping point is solved. The extrusion plate is pushed upward, and then the end of the film is inserted into the insertion hole. The spring squeezes and fixes the film in the insertion hole through the extrusion plate. The winding device rotates itself to wind up the end of the film, so that the film is fixed to the outer wall of the winding device through contact friction between itself. This ensures that the film will not break due to external mechanical pressure during the film testing process.

[0008] The present invention is further configured such that one end of the extrusion plate is equipped with multiple sets of locking blocks, and the inner wall of the insertion hole is provided with multiple sets of locking slots.

[0009] Preferably, the clip presses the film inserted into the socket into the slot for fixation, thereby preventing the film from slipping out of the socket.

[0010] The present invention is further provided that a pad is installed at one end of the extrusion plate, and the pad is made of silicone material.

[0011] Preferably, the silicone pad can easily fix the film by extrusion, and the silicone material is relatively soft, which can reduce the extrusion damage to the film by the pad.

[0012] The present invention is further configured such that a limiting post is sleeved on the outer wall of the drive rod, and the moving distance of the limiting post is equal to the moving distance of the extrusion plate.

[0013] Preferably, when the drive rod moves, the take-up mechanism limits the displacement distance of the drive rod via a limiting post.

[0014] The present invention is further configured such that two sets of rotating columns are installed at both ends of the winding device, and the rotating columns are located in a fixed frame.

[0015] Preferably, the winding device is movably mounted on the inner wall of the fixed frame via two sets of rotating columns.

[0016] The present invention is further configured such that a limiting hole is formed inside the rotating column, a driving block is installed inside the limiting hole, one end of the driving block is connected to a lead screw, and a knob is installed at the end of the lead screw.

[0017] Preferably, the operator can rotate the screw by turning the knob, and the screw drives the winding device to rotate through the drive block connected to its end.

[0018] The present invention is further configured such that both the driving block and the limiting hole are regular hexagons, and the dimensions of the driving block and the limiting hole are matched.

[0019] Preferably, when the drive block rotates, it can drive the take-up coil to rotate, and during the rotation of the drive block, the drive block moves into the take-up coil.

[0020] The present invention is further configured such that a guide post is fixed at the end of the driving block, and one end of the guide post is located on one side of the limiting hole.

[0021] Preferably, the guide post guides the movement of the drive block, so that the drive block can always move in the horizontal direction.

[0022] In summary, the present invention has the following main advantages:

[0023] 1. This utility model solves the problem that rigid clamping of antibacterial films by fixtures easily causes tearing and breakage at the clamping point by setting up a test platform, a winding device, an insertion hole, a compression plate, and a spring. The compression plate is pushed upward, and then the end of the film is inserted into the insertion hole. The spring compresses and fixes the film in the insertion hole through the compression plate. The winding device rotates itself to wind up the end of the film, so that the film is fixed to the outer wall of the winding device through contact friction between itself. Thus, the film will not break due to external mechanical compression during the film testing process.

[0024] 2. This utility model is designed with a knob, a lead screw, a drive block, a rotating column, and a limiting hole. The limiting hole and the drive block are both hexagonal, and the size of the limiting hole matches the size of the limiting hole. When the knob is rotated, the knob drives the winding device to rotate through the drive block connected to the end of the lead screw. During the rotation of the winding device, the film is wound onto the outer wall of the winding device several times. The lead screw is connected to the fixed frame by a thread, so that the winding device will not rotate automatically. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall device of this utility model;

[0026] Figure 2 This is a partial cross-sectional view of the winder of this utility model;

[0027] Figure 3 This is a partial cross-sectional view of the winder of this utility model;

[0028] Figure 4 This is an internal sectional view of the fixed frame of this utility model;

[0029] Figure 5 For the present utility model Figure 3 A magnified view of image A.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Test stand; 101. Controller; 2. Hydraulic cylinder; 3. Fixing frame; 4. Winder; 401. Rotating column; 402. Limiting hole; 403. Insertion hole; 404. Slot; 5. Extrusion plate; 501. Spring; 502. Limiting column; 503. Drive rod; 504. Push block; 505. Locking block; 506. Pad; 6. Knob; 601. Lead screw; 602. Drive block; 603. Guide column. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0033] The embodiments of this utility model will be described below based on its overall structure.

[0034] Please see Figure 1 — Figure 5 The test bench 1 includes a controller 101 mounted on its top. A hydraulic cylinder 2 is fixed to the top of the test bench 1. A fixing frame 3 is provided at both the end of the hydraulic cylinder 2 and the top of the test bench 1. A winder 4 is movably mounted on the inner wall of the fixing frame 3. An insertion hole 403 is provided on the outer wall of the winder 4. An extrusion plate 5 is installed inside the insertion hole 403. A drive rod 503 is connected to the top of the extrusion plate 5. A push block 504 is fixed to the end of the drive rod 503. A spring 501 is installed on the top of the extrusion plate 5, thus solving the problem of clamping. Rigid clamping of antibacterial films can easily cause tearing and breakage at the clamping point. By pushing the extrusion plate 5 upward and then inserting the end of the film into the insertion hole 403, the spring 501 presses and fixes the film in the insertion hole 403 through the extrusion plate 5. The winding device 4 rotates itself to wind up the end of the film, so that the film is fixed to the outer wall of the winding device 4 through contact friction between itself. This ensures that the film will not break due to external mechanical pressure during the film testing process.

[0035] For details regarding the above embodiments, please refer to [link / reference]. Figure 5 Multiple sets of locking blocks 505 are installed at one end of the extrusion plate 5, and multiple sets of locking grooves 404 are opened on the inner wall of the socket 403. The locking blocks 505 squeeze the film inserted into the socket 403 into the locking grooves 404 for fixation, thereby preventing the film from slipping out of the socket 403.

[0036] For details regarding the above embodiments, please refer to [link / reference]. Figure 5 A pad 506 is installed at one end of the extrusion plate 5, and the pad 506 is made of silicone. The silicone pad 506 can easily fix the film by extrusion, and the silicone material is relatively soft, which can reduce the extrusion damage to the film by the pad 506.

[0037] For details regarding the above embodiments, please refer to [link / reference]. Figure 3 The outer wall of the drive rod 503 is fitted with a limiting post 502, and the moving distance of the limiting post 502 is equal to the moving distance of the extrusion plate 5. When the drive rod 503 moves, the winding device 4 limits the displacement distance of the drive rod 503 through the limiting post 502.

[0038] For details regarding the above embodiments, please refer to [link / reference]. Figure 3 and Figure 4 Two sets of rotating columns 401 are installed at both ends of the winder 4, and the rotating columns 401 are located in the fixed frame 3. The winder 4 is movably installed on the inner wall of the fixed frame 3 through the two sets of rotating columns 401.

[0039] For details regarding the above embodiments, please refer to [link / reference]. Figure 4 The rotating column 401 has a limiting hole 402 inside, and a drive block 602 is installed inside the limiting hole 402. One end of the drive block 602 is connected to a lead screw 601, and a knob 6 is installed at the end of the lead screw 601. The operator can rotate the knob 6 to drive the lead screw 601 to rotate. The lead screw 601 drives the winding device 4 to rotate through the drive block 602 connected to its end.

[0040] For details regarding the above embodiments, please refer to [link / reference]. Figure 4 Both the drive block 602 and the limiting hole 402 are set as regular hexagons, and the dimensions of the drive block 602 and the limiting hole 402 are matched. When the drive block 602 rotates, the drive block 602 can drive the winding machine 4 to rotate, and during the rotation of the drive block 602, the drive block 602 moves into the winding machine 4.

[0041] For details regarding the above embodiments, please refer to [link / reference]. Figure 4 The end of the drive block 602 is fixed with a guide post 603, and one end of the guide post 603 is located on one side of the limiting hole 402. The guide post 603 guides the movement of the drive block 602, so that the drive block 602 can always move in the horizontal direction.

[0042] In practical operation, the present invention works as follows: First, the push block 504 is pushed upward. The push block 504 drives the extrusion plate 5 to move upward through the drive rod 503. During the movement of the extrusion plate 5, the extrusion plate 5 compresses the contraction spring 501. Then, one end of the film is inserted into the insertion hole 403. After the push block 504 is released, the spring 501, which is in a compressed state, pushes the extrusion plate 5 to compress and fix the film inserted into the insertion hole 403. Then, the knob 6 is rotated. The knob 6 drives the winding device 4 to rotate through the drive block 602 connected to the end of the lead screw 601. During the rotation of the winding device 4, the film is wound several times on the outer wall of the winding device 4. The lead screw 601 is connected to the fixed frame 3 by a thread, so that the winding device 4 will not rotate automatically. After the winding device 4 connected to the end of the hydraulic cylinder 2 has finished winding the film, the other end of the film is wound up by the winding device 4 installed at the bottom of the test platform 1 in the same way as above, so that the film is in a stretched state. Finally, the hydraulic cylinder 2 stretches the winding device 4 connected to its end upward at a uniform speed.

[0043] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. An apparatus for testing the elongation at break of an antibacterial film, comprising a test stage (1), characterized in that: A controller (101) is installed on the top of the test bench (1). A hydraulic cylinder (2) is fixed on the top of the test bench (1). A fixed frame (3) is provided at the end of the hydraulic cylinder (2) and the top of the test bench (1). A winder (4) is movably installed on the inner wall of the fixed frame (3). An insertion hole (403) is opened on the outer wall of the winder (4). An extrusion plate (5) is installed inside the insertion hole (403). A drive rod (503) is connected to the top of the extrusion plate (5). A push block (504) is fixed at the end of the drive rod (503). A spring (501) is installed on the top of the extrusion plate (5).

2. The apparatus for testing the elongation at break of an antibacterial film according to claim 1, characterized in that: Multiple sets of locking blocks (505) are installed at one end of the extrusion plate (5), and multiple sets of locking slots (404) are opened on the inner wall of the insertion hole (403).

3. The apparatus for testing the elongation at break of an antibacterial film according to claim 1, characterized in that: A pad (506) is installed at one end of the extrusion plate (5), and the pad (506) is made of silicone.

4. The apparatus for testing the elongation at break of an antibacterial film according to claim 1, characterized in that: The outer wall of the drive rod (503) is fitted with a limiting post (502), and the moving distance of the limiting post (502) is equal to the moving distance of the extrusion plate (5).

5. The apparatus for testing the elongation at break of an antibacterial film according to claim 1, characterized in that: The winding device (4) has two sets of rotating columns (401) installed at both ends, and the rotating columns (401) are located in the fixed frame (3).

6. The apparatus for testing the elongation at break of an antibacterial film according to claim 5, characterized in that: The rotating column (401) has a limiting hole (402) inside, and a driving block (602) is installed inside the limiting hole (402). One end of the driving block (602) is connected to a lead screw (601), and a knob (6) is installed at the end of the lead screw (601).

7. The apparatus for testing the elongation at break of an antibacterial film according to claim 6, characterized in that: The driving block (602) and the limiting hole (402) are both set as regular hexagons, and the dimensions of the driving block (602) and the limiting hole (402) are matched.

8. The apparatus for testing the elongation at break of an antibacterial film according to claim 6, characterized in that: The end of the drive block (602) is fixed with a guide post (603), and one end of the guide post (603) is located on one side of the limiting hole (402).

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