Aluminum-plastic composite tape composite strength detection tool

Abstract

The utility model relates to strength detection frock technical field discloses a kind of composite strength detection frock of aluminium-plastic composite tape, including detection table, the upper end of detection table is equipped with two U-shaped plates, the inside upper end of one of U-shaped plates is equipped with installation slot, heating sheet is installed in the inside of installation slot, the upper end of two U-shaped plates is all screw thread connection with clamping bolt, the bottom end of clamping bolt extends to the inside of U-shaped plate and is connected with clamping plate by bearing, the bottom end of one of clamping plate is equipped with heating cavity, roller plate is slidably connected in the inside of heating cavity, technical effect is the interface stress generated by the difference of aluminium foil and plastic layer thermal expansion coefficient, promote two layers of material natural, evenly separated and form to rise edge, the whole process does not need contact force intervention, eliminate sample damage and data deviation brought by artificial operation from source.

Description

Technical Field

[0001] This utility model relates to the field of strength testing tooling technology, specifically to a composite strength testing tooling for aluminum-plastic composite strips. Background Technology

[0002] Aluminum-plastic composite tape, with its excellent barrier properties, corrosion resistance, and mechanical strength, has become a key protective material for ensuring the stable operation of core equipment such as cables and pipelines. Its performance directly depends on the composite strength between the aluminum foil and the plastic layer. If the composite strength is insufficient, during long-term use, the two layers are prone to peeling and warping due to factors such as changes in ambient temperature, vibration, and external friction. This not only results in the loss of protection for internal cables or media but may also cause serious safety hazards such as signal interference and media leakage, leading to huge economic losses and safety risks for project operations. Therefore, accurate and efficient testing of the composite strength of aluminum-plastic composite tape is a core link in ensuring product quality and project safety in related industries.

[0003] Currently, the industry's testing methods for the composite strength of aluminum-plastic composite strips mainly rely on peel tests. This involves directly pulling the aluminum foil layer and plastic layer of the composite strip with external force and recording the force required to separate the two layers to determine whether the composite strength meets the standard. However, some composite strips use high-viscosity adhesives or special composite processes, making initial peeling difficult to achieve naturally. Tools such as knives and tweezers are needed to manually pry the edges, which is not only cumbersome and inefficient but may also scratch the aluminum foil layer or damage the composite interface, further interfering with the accuracy of the test results. Therefore, we propose a tooling for testing the composite strength of aluminum-plastic composite strips. Utility Model Content

[0004] This utility model provides the following technical solution: a testing fixture for the composite strength of aluminum-plastic composite strip, including a testing platform. The upper end of the testing platform is provided with two U-shaped plates. The upper end of one of the U-shaped plates has an installation groove, and a heating element is installed inside the installation groove. The upper ends of both U-shaped plates are threaded with clamping bolts. The bottom ends of the clamping bolts extend into the interior of the U-shaped plates and are connected to clamping plates through bearings. The bottom end of one of the clamping plates has a heating cavity. A roller plate is slidably connected inside the heating cavity. A rotating roller is rotatably installed on the inner side of the roller plate. The upper end of the roller plate is provided with a pushing structure. A tension gauge is fixedly installed on the side end of one of the U-shaped plates, and a pulling structure is provided on the side end of the tension gauge.

[0005] Preferably, the pushing structure includes a slide groove, which is formed at the upper end of the clamping plate. The bottom end of the slide groove communicates with the heating chamber. A T-shaped rod is slidably connected in the slide groove. The bottom end of the T-shaped rod is fixedly installed on the side end of the roller plate. A sleeve plate and a connecting spring are sleeved on the outer surface of the T-shaped rod. The two ends of the connecting spring are respectively fixedly installed on the opposite sides of the T-shaped rod and the sleeve plate.

[0006] Preferably, the pulling structure includes a groove, which is formed at the upper end of the testing platform. A threaded rod is rotatably installed on the inner side of the groove, and a pulling plate is threadedly installed on the outer surface of the threaded rod. The side end of the pulling plate is fixedly installed on one end of the tension gauge, and a drive motor is fixedly installed on the side end of the testing platform. The output end of the drive motor is connected to one end of the groove.

[0007] Preferably, the upper end of the testing platform has two limiting grooves, and the interior of each limiting groove is slidably connected to a limiting block. Both limiting blocks are fixedly installed at the bottom end of one of the U-shaped plates.

[0008] Preferably, a scale is fixedly installed on the upper end of the testing platform, and an alignment rod is provided on the upper end, which is fixedly installed on the side end of one of the U-shaped plates.

[0009] Preferably, each clamping plate has multiple clamping blocks fixedly installed at its bottom end, and the U-shaped plate has multiple clamping grooves at its inner bottom end. The longitudinal sections of the clamping blocks and the clamping grooves are all semi-circular.

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

[0011] This invention utilizes a heated lifting structure to generate interfacial stress caused by the difference in thermal expansion coefficients between the aluminum foil and the plastic layer, causing the two layers of materials to separate naturally and uniformly to form a lifting edge. The entire process requires no contact external force intervention, which can completely preserve the original state of the composite interface and ensure the consistency of stress on the lifting end. This eliminates sample damage and data deviation caused by manual operation from the source, making the final test results more consistent with the true composite strength level of the aluminum-plastic composite strip. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 For the present utility model Figure 1 Enlarged view of point A in the middle;

[0014] Figure 3 This is a schematic diagram of the component structure of this utility model.

[0015] In the diagram: 1. Testing table; 2. U-shaped plate; 3. Clamping bolt; 4. Clamping plate; 5. Mounting groove; 6. Heating element; 7. Heating chamber; 8. Roller plate; 9. Rotating roller; 10. Slide groove; 11. T-shaped rod; 12. Sleeve plate; 13. Connecting spring; 14. Clamping groove; 15. Clamping block; 16. Limiting groove; 17. Limiting block; 18. Scale; 19. Alignment rod; 20. Tensile gauge; 21. Pulling plate; 22. Threaded rod; 23. Groove; 24. Drive motor.

[0016] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to the specific structure, device and environment. According to specific needs, those skilled in the art can adjust or modify these devices and environments, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0017] 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.

[0018] like Figures 1-3 As shown, this utility model provides a technical solution: a composite strength testing fixture for aluminum-plastic composite strips, including a testing platform 1. The upper end of the testing platform 1 is provided with two U-shaped plates 2. The upper end of one of the U-shaped plates 2 is provided with an installation groove 5. A heating element 6 is installed inside the installation groove 5. The upper ends of both U-shaped plates 2 are threadedly connected with clamping bolts 3. The bottom ends of the clamping bolts 3 extend into the interior of the U-shaped plates 2 and are connected to clamping plates 4 through bearings. The bottom end of one of the clamping plates 4 is provided with a heating chamber 7. A roller plate 8 is slidably connected inside the heating chamber 7. A rotating roller 9 is rotatably installed on the side end inside the roller plate 8. A pushing structure is provided on the upper end of the roller plate 8. A tension gauge 20 is fixedly installed on the side end of one of the U-shaped plates 2. A pulling structure is provided on the side end of the tension gauge 20.

[0019] In an optional embodiment: the pushing structure includes a slide groove 10, which is opened at the upper end of the clamping plate 4. The bottom end of the slide groove 10 communicates with the heating chamber 7. A T-shaped rod 11 is slidably connected in the slide groove 10. The bottom end of the T-shaped rod 11 is fixedly installed on the side end of the roller plate 8. A sleeve plate 12 and a connecting spring 13 are sleeved on the outer surface of the T-shaped rod 11. The two ends of the connecting spring 13 are respectively fixedly installed on the opposite side ends of the T-shaped rod 11 and the sleeve plate 12.

[0020] It should be noted that when the T-shaped bar 11 is pressed down, the roller plate 8 moves downward with the T-shaped bar 11, so that the bottom end of the rotating roller 9 is in contact with the upper end of the composite belt. Then, the T-shaped bar 11 is pushed back and forth, so that the rotating roller 9 repeatedly rolls on the upper end of the composite belt.

[0021] In an optional embodiment: the pulling structure includes a groove 23, which is formed at the upper end of the testing table 1. A threaded rod 22 is rotatably installed on the inner side of the groove 23. A pulling plate 21 is threadedly installed on the outer surface of the threaded rod 22. The side end of the pulling plate 21 is fixedly installed at one end of the tension gauge 20. A drive motor 24 is fixedly installed on the side end of the testing table 1. The output end of the drive motor 24 is connected to one end of the groove 23.

[0022] It should be noted that the output end of the drive motor 24 rotates in both directions, causing the threaded rod 22 to rotate in both directions, which in turn causes the pulling plate 21 to move back and forth, thereby pulling one of the U-shaped plates 2 to move left and right.

[0023] In an optional embodiment: the upper end of the detection table 1 has two limiting grooves 16, and the interior of each limiting groove 16 is slidably connected to a limiting block 17. The two limiting blocks 17 are fixedly installed at the bottom end of one of the U-shaped plates 2.

[0024] It should be noted that the U-shaped plate 2 should be made to slide in a straight line only, without slipping or other issues.

[0025] In an optional embodiment: a scale 18 is fixedly installed on the upper end of the testing table 1, and an alignment rod 19 is provided on the upper end of the table 1. The alignment rod 19 is fixedly installed on the side end of one of the U-shaped plates 2.

[0026] It should be noted that before stretching, the alignment rod 19 is aligned with the initial scale of the ruler 18. During the stretching process, the U-shaped plate 2 connected to the alignment rod 19 will move outward with the tension, and the alignment rod 19 will slide along the ruler 18 simultaneously. The operator can intuitively read the actual stretching displacement by observing the change in the scale indicated by the alignment rod 19. By using the dual data of tension value and displacement, it is possible to quickly determine whether the detection process is normal, avoid invalid data from being mixed into the final result, and improve the reliability of the detection.

[0027] In an optional embodiment: each clamping plate 4 has a plurality of clamping blocks 15 fixedly installed at its bottom end, and the U-shaped plate 2 has a plurality of clamping grooves 14 opened at its inner bottom end. The longitudinal sections of the clamping blocks 15 and the clamping grooves 14 are all semi-circular.

[0028] It should be noted that although aluminum-plastic composite strips are mainly in strip form, there may be slight thickness deviations in actual production, or slight arc deformation due to winding and storage. When using flat clamping grooves 14 and flat clamping blocks 15, local suspension is likely to occur when there are thickness deviations or slight deformations in the composite strip, resulting in uneven distribution of clamping force. During tensile testing, the composite strip may slip from the loosely bonded parts, or even cause non-interlayer fracture due to force displacement, directly affecting the accuracy of testing.

[0029] In practical use, the working principle of this utility model is as follows:

[0030] First, place one end of the composite strip to be tested on the upper end of the mounting groove 5. Then, rotate the clamping bolt 3 to move the clamping plate 4 downwards, pressing the composite strip down. Next, turn on the heating element 6 to locally heat one end of the heating element 6. Then, press down on the T-shaped rod 11. When the T-shaped rod 11 is pressed down, it moves the roller plate 8 downwards, so that the bottom end of the rotating roller 9 is in contact with the upper end of the composite strip. Then, push the T-shaped rod 11 back and forth, so that the rotating roller 9 repeatedly rolls on the upper end of the composite strip. The aluminum layer, due to its fast heat conduction, heats up first, while the plastic layer, with its slow heat conduction, remains rigid. An interface is formed between the two. The micro-separation forms a raised edge, eliminating the need for manual peeling. The aluminum foil layer and plastic layer are then separated by the raised edge, and the two layers are fixed to the upper ends of the two U-shaped plates 2. The drive motor 24 is started, and its output rotates in both directions, causing the threaded rod 22 to rotate in both directions as well. This, in turn, moves the pulling plate 21 back and forth, thus pulling one of the U-shaped plates 2 left and right, pulling the aluminum foil layer and plastic layer of the composite strip apart. The data of the tensile tester 20 and the pulling distance are recorded, and the composite strength is then calculated.

[0031] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A composite strength testing fixture for aluminum-plastic composite strips, comprising a testing table (1), characterized in that: The upper end of the testing platform (1) is provided with two U-shaped plates (2). The upper end of one of the U-shaped plates (2) is provided with an installation groove (5). A heating element (6) is installed inside the installation groove (5). The upper ends of both U-shaped plates (2) are threaded with clamping bolts (3). The bottom end of the clamping bolts (3) extends into the interior of the U-shaped plate (2) and is connected to a clamping plate (4) through a bearing. The bottom end of one of the clamping plates (4) is provided with a heating cavity (7). A roller plate (8) is slidably connected inside the heating cavity (7). A rotating roller (9) is rotatably installed on the side end inside the roller plate (8). The upper end of the roller plate (8) is provided with a pushing structure. A tension gauge (20) is fixedly installed on the side end of one of the U-shaped plates (2). The side end of the tension gauge (20) is provided with a pulling structure.

2. The aluminum-plastic composite strip composite strength testing fixture according to claim 1, characterized in that: The pushing structure includes a slide groove (10), which is opened at the upper end of the clamping plate (4). The bottom end of the slide groove (10) is connected to the heating chamber (7). A T-shaped rod (11) is slidably connected in the slide groove (10). The bottom end of the T-shaped rod (11) is fixedly installed on the side end of the roller plate (8). A sleeve plate (12) and a connecting spring (13) are sleeved on the outer surface of the T-shaped rod (11). The two ends of the connecting spring (13) are respectively fixedly installed on the opposite side ends of the T-shaped rod (11) and the sleeve plate (12).

3. The aluminum-plastic composite strip composite strength testing fixture according to claim 1, characterized in that: The pulling structure includes a groove (23), which is formed at the upper end of the testing platform (1). A threaded rod (22) is rotatably installed on the inner side of the groove (23). A pulling plate (21) is threaded on the outer surface of the threaded rod (22). The side end of the pulling plate (21) is fixedly installed on one end of the tension gauge (20). A drive motor (24) is fixedly installed on the side end of the testing platform (1). The output end of the drive motor (24) is connected to one end of the groove (23).

4. The aluminum-plastic composite strip composite strength testing fixture according to claim 1, characterized in that: The upper end of the testing platform (1) has two limiting grooves (16), and the interior of each limiting groove (16) is slidably connected to a limiting block (17). The two limiting blocks (17) are fixedly installed at the bottom end of one of the U-shaped plates (2).

5. The aluminum-plastic composite strip composite strength testing fixture according to claim 1, characterized in that: A scale (18) is fixedly installed on the upper end of the testing platform (1), and an alignment rod (19) is provided on the upper end. The alignment rod (19) is fixedly installed on the side end of one of the U-shaped plates (2).

6. The aluminum-plastic composite strip composite strength testing fixture according to claim 1, characterized in that: Each clamping plate (4) has multiple clamping blocks (15) fixedly installed at its bottom end. The U-shaped plate (2) has multiple clamping grooves (14) at its inner bottom end. The longitudinal sections of the clamping blocks (15) and the clamping grooves (14) are all semi-circular.

Images