A tensile film puncture resistance tester

Abstract

The utility model relates to tensile film detection technical field discloses a kind of tensile film puncture resistance tester, including base, base inside fixedly arranged with motor, the output end of the motor is fixedly connected with the shaft, the shaft is fixedly connected with rotating block on, rotating block periphery is fixedly connected with multiple connecting rods, multiple connecting rods are fixedly connected with carousel, carousel is equidistantly fixedly arranged with below multiple thorn cone plate, below few thorn cone plate and below no thorn cone plate, two placing blocks are fixedly arranged on the base, two placing blocks both sides are fixedly arranged with two electric telescopic rods, the telescopic end of four electric telescopic rods is fixedly arranged with two pressing blocks. Its advantage in the utility model is that different situations can be simulated by the combination between multiple different types of thorn cone plate, relatively comprehensive data can be obtained, and it is more conducive to the performance evaluation of tensile film.

Description

Technical Field

[0001] This invention relates to the field of stretch film testing technology, and particularly to a stretch film puncture resistance tester. Background Technology

[0002] Stretch film is a highly stretchable plastic film made primarily of linear low-density polyethylene. It is transparent, elastic, high-strength, and non-toxic, making it an indispensable material in the modern packaging industry due to its excellent physical properties and wide applicability. Testing the puncture resistance of stretch film assesses its ability to resist puncture by sharp objects during practical use; this is a crucial indicator for quality control and performance optimization. It's not only about evaluating physical strength but also about ensuring the safety, economy, and environmental friendliness of the packaging in actual use.

[0003] The existing patent (publication number CN213456403U) discloses "a high-strength tensile film testing device, including a base, a support column one fixedly connected to the upper part of the base, a bearing fixedly installed on the upper part of the support column one, a support column two fixedly sleeved inside the bearing, two crossbars fixedly connected to the left and right sides of the support column two, a puncture device and an abrasion device respectively fixedly connected to the lower part of the crossbars, an operating box fixedly connected to the front side of the base, a guide rail provided on the lower inner wall surface of the operating box, and a fixing device movably connected inside the operating box through the guide rail. This utility model allows for convenient installation of the film to be tested and a simple testing method. A motor four drives the rotation of the support column two, allowing for either puncture resistance testing or abrasion resistance testing of the tensile film. The power of motors one and two moves toothed plates one and two upwards or downwards to perform quality testing on the tensile film, providing a comprehensive range of testing items."

[0004] In the process of developing this application, the inventors discovered the following problems with the prior art: Current stretch film puncture resistance testers all use cone-shaped puncture plates with fixed shapes to test the stretch film, which cannot determine what changes will occur under the compression of more or fewer cone punctures, and the data obtained may be relatively one-sided.

[0005] Therefore, those skilled in the art have provided a tensile membrane puncture resistance tester to solve the problems mentioned in the background art. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a puncture resistance tester for stretch membranes. Its advantage is that it can simulate different situations by combining multiple different types of cone-shaped puncture plates, thereby obtaining relatively comprehensive data, which is more conducive to evaluating the performance of stretch membranes.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a tensile film puncture resistance tester, comprising a base, a No. 1 motor fixedly installed inside the base, a rotating shaft fixedly connected to the output end of the No. 1 motor, a rotating block fixedly connected to the rotating shaft, a plurality of connecting rods fixedly connected around the rotating block, a turntable fixedly connected to the plurality of connecting rods, and a lower multi-thorn cone plate, a lower few-thorn cone plate, and a lower thornless cone plate fixedly installed at equal intervals on the turntable.

[0008] Furthermore, two placement blocks are fixedly installed on the base, and two electric telescopic rods are fixedly installed on both sides of the two placement blocks. Two pressing blocks are fixedly installed on the telescopic ends of the four electric telescopic rods.

[0009] Furthermore, a chassis is fixedly mounted on the base, and a control panel is fixedly mounted on the side of the chassis.

[0010] Furthermore, a second movable slot is fixedly installed on the top of the chassis, a slide rail is fixedly installed inside the second movable slot, and a third motor is fixedly installed at the bottom of the second movable slot.

[0011] Furthermore, the output end of the No. 3 motor is fixedly connected to the No. 2 threaded rod, and the No. 2 threaded rod is threadedly connected to the connecting arm, which is slidably connected to the slide rail.

[0012] Furthermore, a first moving slot is fixedly provided at one end of the connecting arm, a second motor is fixedly provided inside the first moving slot, and a first threaded rod is fixedly connected to the output end of the second motor.

[0013] Furthermore, a movable block is threadedly connected to the first threaded rod, and an upper movable plate is fixedly installed below the movable block. An upper low-burr cone plate and an upper high-burr cone plate are fixedly installed at both ends of the upper movable plate.

[0014] This utility model has the following beneficial effects:

[0015] This invention proposes a puncture resistance tester for stretch membranes. It has three different base plates at the bottom to simulate conditions with many, few, and no punctures, and two bottom plates at the top to simulate conditions with many and few punctures. By combining multiple puncture plates, the puncture resistance of the stretch membrane under various conditions can be measured, resulting in more comprehensive conclusions and making it more beneficial for evaluating the performance of the stretch membrane. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the present invention.

[0018] Figure 3 This is a schematic diagram of the internal structure of the No. 1 moving slot of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the No. 2 moving slot of this utility model.

[0020] Legend:

[0021] 1. Base; 2. Chassis; 3. Control Panel; 4. Placement Block; 5. Electric Telescopic Rod; 6. Pressing Block; 7. Lower Multi-Spiked Conical Plate; 8. Lower Slightly Spiked Conical Plate; 9. Lower Spiked-Free Conical Plate; 10. Turntable; 11. Rotating Block; 12. Rotating Shaft; 13. Motor No. 1; 14. Connecting Rod; 15. Moving Slot No. 1; 16. Moving Block; 17. Motor No. 2; 18. Threaded Rod No. 1; 19. Upper Slightly Spiked Conical Plate; 20. Upper Multi-Spiked Conical Plate; 21. Upper Moving Plate; 22. Connecting Arm; 23. Moving Slot No. 2; 24. Slide Rail; 25. Threaded Rod No. 2; 26. Motor No. 3. Detailed Implementation

[0022] 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.

[0023] Reference Figure 1 , Figure 2 An embodiment of this utility model provides a tensile film puncture resistance tester, including a base 1. A No. 1 motor 13 is fixedly installed inside the base 1. A rotating shaft 12 is fixedly connected to the output end of the No. 1 motor 13. A rotating block 11 is fixedly connected to the rotating shaft 12. Multiple connecting rods 14 are fixedly connected around the rotating block 11. A turntable 10 is fixedly connected to the multiple connecting rods 14. A lower multi-thorn cone plate 7, a lower few-thorn cone plate 8, and a lower thornless cone plate 9 are fixedly arranged at equal intervals on the turntable 10.

[0024] Specifically, starting motor 13 drives shaft 12 to rotate, which in turn drives rotating block 11 to rotate, which in turn drives connecting rod 14 to rotate, which in turn drives turntable 10 to rotate. The cone plate that the stretch film to be tested contacts can be modified. The lower cone plate 7 with multiple thorns, the lower cone plate 8 with fewer thorns, and the lower cone plate 9 without thorns are used to simulate three different situations.

[0025] Reference Figure 1Two placement blocks 4 are fixedly installed on the base 1. Two electric telescopic rods 5 are fixedly installed on both sides of the two placement blocks 4. Two pressing blocks 6 are fixedly installed on the telescopic ends of the four electric telescopic rods 5.

[0026] Specifically, start the electric telescopic rod 5, which drives the pressing block 6 to move upward, placing the stretch film to be tested onto the two placement blocks 4. Then start the electric telescopic rod 5, which drives the pressing block 6 to move downward, firmly clamping the stretch film to be tested.

[0027] Reference Figure 1 , Figure 4 A second movable slot 23 is fixedly installed on the top of the chassis 2. A slide rail 24 is fixedly installed inside the second movable slot 23. A third motor 26 is fixedly installed at the bottom of the second movable slot 23. A second threaded rod 25 is fixedly connected to the output end of the third motor 26. A connecting arm 22 is threadedly connected to the second threaded rod 25. The connecting arm 22 is slidably connected to the slide rail 24.

[0028] Specifically, starting motor 26 causes threaded rod 25 to rotate, which in turn moves connecting arm 22 within moving groove 23. Connecting arm 22 has grooves that correspond to the shape of slide rail 24, allowing it to slide on slide rail 24 for limiting.

[0029] Reference Figure 1 , Figure 3 One end of the connecting arm 22 is fixedly provided with a first moving groove 15. A second motor 17 is fixedly provided inside the first moving groove 15. The output end of the second motor 17 is fixedly connected to a first threaded rod 18. A moving block 16 is threadedly connected to the first threaded rod 18. An upper moving plate 21 is fixedly provided below the moving block 16. An upper low-spiked cone plate 19 and an upper high-spiked cone plate 20 are fixedly provided at both ends of the upper moving plate 21.

[0030] Specifically, starting motor 17 causes threaded rod 18 to rotate, which in turn causes moving block 16 to move between moving slots 15, moving upper moving plate 21 and changing the cone-shaped plate facing the stretch film to be tested. Upper cone plate 19 with fewer thorns and upper cone plate 20 with more thorns are used to simulate two different situations.

[0031] Reference Figure 1 A chassis 2 is fixedly mounted on the base 1, and a control panel 3 is fixedly mounted on the side of the chassis 2.

[0032] Specifically, control panel 3 is used to control the switches of motor 13, motor 17, motor 26, and electric telescopic rod 7.

[0033] Working principle: Operate control panel 3, start electric telescopic rod 5, which drives pressing block 6 to move upward, placing the stretch film to be tested on the two placement blocks 4. Then start electric telescopic rod 5 again, which drives pressing block 6 to move downward, firmly clamping the stretch film to be tested. Start motor 13, which drives rotating shaft 12 to rotate, thereby driving rotating block 11 to rotate, which in turn drives connecting rod 14 to rotate, which in turn drives turntable 10 to rotate. Select the desired rotation from the lower multi-thorn cone plate 7, lower few-thorn cone plate 8, and lower thornless cone plate 9 to rotate under the stretch film to be tested. Start motor 17, which causes threaded rod 18 to rotate, thereby moving moving block 16 between moving slot 15, driving moving plate 21 to move. Select the desired rotation from the upper few-thorn cone plate 19 and upper multi-thorn cone plate 20 to rotate under the stretch film to be tested. Start motor 26 to rotate threaded rod 25, which drives connecting arm 22 to slowly descend in moving groove 23 through its own groove under the limiting action of slide rail 24 until the upper and lower cone plates contact each other and compress the stretching film.

[0034] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A puncture resistance tester for stretch membranes, comprising a base (1), characterized in that: A No. 1 motor (13) is fixedly installed inside the base (1). A rotating shaft (12) is fixedly connected to the output end of the No. 1 motor (13). A rotating block (11) is fixedly connected to the rotating shaft (12). Multiple connecting rods (14) are fixedly connected around the rotating block (11). A turntable (10) is fixedly connected to the multiple connecting rods (14). A lower multi-spiked cone plate (7), a lower few-spiked cone plate (8), and a lower spiked cone plate (9) are fixedly arranged at equal intervals on the turntable (10).

2. The puncture resistance tester for a stretch membrane according to claim 1, characterized in that: Two placement blocks (4) are fixedly installed on the base (1). Two electric telescopic rods (5) are fixedly installed on both sides of the two placement blocks (4). Two pressing blocks (6) are fixedly installed at the telescopic ends of the four electric telescopic rods (5).

3. The puncture resistance tester for a stretch membrane according to claim 1, characterized in that: A chassis (2) is fixedly installed on the base (1), and a control panel (3) is fixedly installed on the side of the chassis (2).

4. The puncture resistance tester for a stretch membrane according to claim 3, characterized in that: A second moving slot (23) is fixedly installed above the chassis (2), a slide rail (24) is fixedly installed inside the second moving slot (23), and a third motor (26) is fixedly installed at the bottom of the second moving slot (23).

5. The puncture resistance tester for a stretch membrane according to claim 4, characterized in that: The output end of the No. 3 motor (26) is fixedly connected to the No. 2 threaded rod (25), and the No. 2 threaded rod (25) is threadedly connected to the connecting arm (22), which is slidably connected to the slide rail (24).

6. The puncture resistance tester for a stretch membrane according to claim 5, characterized in that: One end of the connecting arm (22) is fixedly provided with a first moving groove (15), and a second motor (17) is fixedly provided inside the first moving groove (15). The output end of the second motor (17) is fixedly connected to a first threaded rod (18).

7. The puncture resistance tester for a stretch membrane according to claim 6, characterized in that: The first threaded rod (18) is threadedly connected to a moving block (16), and an upper moving plate (21) is fixedly installed below the moving block (16). An upper low-thorn cone plate (19) and an upper high-thorn cone plate (20) are fixedly installed at both ends of the upper moving plate (21).

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