A packaging aluminum film heat seal strength testing device
By setting adjusting bolts on the sliding block to synchronously adjust the clamping area, the problem of the clamping position deviating from the tensile axis in the existing device is solved, and the accuracy and stability of the aluminum film heat seal strength test are realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU HUAJIAN PHARM PACKAGING MATERIALS CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-07-21
AI Technical Summary
Existing heat seal strength testing devices, when the clamping position requirements are high, are prone to causing the clamping area to deviate from the tensile axis, generating eccentric loads, affecting the accuracy of test results, and even causing the sample to slip or break.
By setting adjusting bolts on the sliding block, the adjusting bolt surfaces have opposite threaded sections, so that the clamping area can be adjusted synchronously and always kept on the tension axis to prevent deviation.
Ensure that the clamping area remains aligned with the stretching axis throughout the stretching process to improve the accuracy of test results and prevent misalignment and sample damage.
Smart Images
Figure CN224535617U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of thin film testing technology, specifically to a device for testing the heat seal strength of packaging aluminum film. Background Technology
[0002] Aluminum packaging film is a type of film product widely used in the food, pharmaceutical and other industries. It has excellent barrier properties and high temperature resistance.
[0003] Before using aluminum packaging film, its heat-sealing strength needs to be evaluated. Heat-sealing strength, also known as heat-sealing strength or sealing strength, is an indicator for assessing the sealing strength of the heat-sealed parts of food packaging. If the heat-sealing strength is insufficient, problems such as opening, air leakage, and bag breakage may occur in the finished packaging, affecting food safety. In the existing technology, heat-sealing strength testing devices are usually used to test the heat-sealing performance of packaging aluminum film. This device is usually a tensile testing machine. During the test, the test sample is selected and installed on the fixture of the tensile testing machine, and the heat-sealed position is aligned with the tensile direction. A constant rate of tensile force is applied, and the force value when the heat-sealed part breaks is recorded, thereby calculating the heat-sealing strength.
[0004] However, in the existing heat seal strength test process, the clamping position of the fixture is highly demanding. Since both ends of the aluminum film need to be fixed separately, if the position of one of the fixtures deviates, the clamping area will deviate from the clamping axis, causing the tensile direction to shift. The aluminum film will then be subjected to eccentric load, generating additional bending stress, affecting the accuracy of the test results, and may even cause the sample to slip or break, thus failing to truly reflect the heat seal performance of the aluminum film.
[0005] Therefore, it is necessary to provide a device for testing the heat-sealing strength of aluminum foil packaging to solve the above problems.
[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention
[0007] Based on the above-mentioned problems in the existing technology, the problem to be solved by this application is: to provide a packaging aluminum film heat seal strength testing device, which adjusts the sliding block by adjusting the bolt, and the sliding block surface has opposite threaded sections, thereby achieving synchronous adjustment so that the clamping area is always located on the tensile axis.
[0008] The technical solution adopted by this application to solve its technical problem is: a packaging aluminum film heat seal strength testing device, comprising: The installation platform has a two-layer structure. A drive device, wherein the drive device is disposed in the lower structure; A top plate, which is disposed on top of the installation platform; A tensioning mechanism is disposed between the top plate and the driving device; Clamping mechanism; The clamping mechanism includes: A fixed column, which is fixedly connected to the tensioning mechanism; The mounting block is fixed to the fixing column, and the surface of the mounting block is provided with a sliding groove; Sliding blocks, wherein the sliding blocks are slidably disposed in a sliding groove in pairs; An adjusting bolt passes through the pair of sliding blocks, and the surface of the adjusting bolt is provided with two opposite threaded sections.
[0009] In the implementation of the technical solution of this application, by setting an adjusting bolt on the sliding block, and the surface of the adjusting bolt is provided with two opposite threaded sections, the sliding block can be adjusted synchronously when the adjusting bolt is rotated, ensuring that the clamping area is always located on the tension axis and preventing deviation during the tensioning process.
[0010] Furthermore, the driving device includes a drive motor, which is disposed in the lower mechanism of the mounting platform. The output end of the drive motor is connected to a gear, and the gear set is fixedly connected to a lead screw. The other end of the lead screw is connected to a top plate bearing.
[0011] Furthermore, the tensioning mechanism includes a slider that is threadedly engaged with a lead screw, and a slide bar is provided on the mounting platform through which the slider passes.
[0012] Furthermore, the clamping mechanisms are arranged in pairs, with one clamping mechanism fixed to the slider and the other fixed to the top plate.
[0013] Furthermore, the adjusting bolts are arranged in pairs and symmetrically on both sides of the sliding block.
[0014] Furthermore, a knob is provided at the end of the adjusting bolt.
[0015] The beneficial effects of this application are: the packaging aluminum film heat seal strength testing device provided by this application, by setting an adjusting bolt on the sliding block, and the surface of the adjusting bolt is provided with two opposite threaded sections, the sliding block can be adjusted synchronously when the adjusting bolt is rotated, ensuring that the clamping area is always located on the tensile axis and preventing deviation during the tensile process.
[0016] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description
[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is an overall schematic diagram of a packaging aluminum film heat seal strength testing device according to this application; Figure 2 for Figure 1 A magnified view of region A in the middle; The following are the labeling elements in the figures: 1. Mounting platform; 2. Drive unit; 3. Top plate; 4. Tensioning mechanism; 5. Clamping mechanism; 21. Drive motor; 22. Slide rod; 23. Lead screw; 41. Slider; 51. Fixed column; 52. Mounting block; 53. Slide groove; 54. Sliding block; 55. Adjusting bolt; 56. Knob. Detailed Implementation
[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.
[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.
[0020] like Figure 1 As shown, this application provides a packaging aluminum film heat seal strength testing device for obtaining test data of the heat seal position of the aluminum film during the heat seal strength test of the packaging aluminum film. The heat seal strength testing device includes an installation platform 1, which is a structure with upper and lower layers. The lower layer is provided with a driving device 2, which serves as the power source of the testing device. like Figure 1 As shown, the drive device 2 includes a drive motor 21, which is located in the lower structure of the mounting platform 1. The output end of the drive motor 21 is connected to a gear (not shown in the figure), which is connected to the drive motor 21 for transmission. The gear is fixedly connected to a lead screw 23, one end of which is connected to the gear. In the upper structure of the mounting platform 1, a top plate 3 is provided on its top, and the other end of the lead screw 23 is connected to the bearing of the top plate 3. Therefore, the operation of the drive motor 21 can drive the lead screw 23 to rotate. The device also includes a tensioning mechanism 4, which is disposed between the top plate 3 and the drive device 2. The tensioning mechanism 4 is used to stretch the aluminum film to be tested. The tensioning mechanism 4 includes a slider 41, which is threadedly engaged with the lead screw 23. A slide rod 22 is provided on the mounting platform 1. The slide rod 22 passes through the slider 41 and guides the slider 41. When the lead screw 23 rotates, the slider 41 is adapted to move along the axial direction of the lead screw 23, thereby realizing the tensile test of the aluminum film. To fix the aluminum film, the device is also equipped with clamping mechanisms 5. These clamping mechanisms 5 are arranged in pairs, respectively mounted on the slider 41 and the top plate 3. The two clamping mechanisms 5 are positioned opposite each other, clamping both ends of the aluminum film. The operation of the drive motor 21 moves the slider 41, enabling a tensile test on the heat-sealing strength of the aluminum film. The device is also connected to a tensile force measuring device (not shown in the figure), which monitors the tensile force data in real time during the tensile process. This tensile force measuring device can be an electronic or mechanical sensor, recording the stress changes of the aluminum film under tension. For details, refer to existing technology. The following is a structural description of the clamping mechanism 5 mounted on the slider 41: like Figure 2 As shown, the clamping mechanism 5 includes a fixed post 51, which is fixedly connected to the slider 41. The fixed post 51 is provided with a mounting block 52. The surface of the mounting block 52 is provided with a sliding groove 53. A pair of sliding blocks 54 are embedded in the sliding groove 53. The pair of sliding blocks 54 are adapted to move along the sliding groove 53, and a clamping area is formed between the pair of sliding blocks 54. The clamping area can be adjusted by the relative movement of the sliding blocks 54, thereby clamping the aluminum film. It should be noted that the fixing post 51 of the other clamping mechanism 5 is fixed on the top plate 3, and its structure is the same as that of the clamping mechanism 5 on the slider 41. It will not be described again in this embodiment and in the following text. like Figure 2 As shown, in order to control the center point of the clamping area and keep it always located on the tensile axis to prevent displacement during the tensile process, a threaded hole (not shown in the figure) is provided on the sliding block 54. An adjusting bolt 55 is provided in the threaded hole. The adjusting bolt 55 has a thread on its side, and the thread has two thread segments in opposite directions on the side of the adjusting bolt 55. Therefore, when the adjusting bolt 55 rotates, the two sliding blocks 54 can be adjusted to move relative to each other or in opposite directions at the same time, ensuring that the center of the clamping area is aligned with the tensile axis and preventing the clamping area from shifting when the sliding block 54 is moved alone, which would affect the test accuracy. For ease of control, such as Figure 2As shown, the end of the adjusting bolt 55 is provided with an adjusting knob 56. By rotating the knob 56, the adjusting bolt 55 can be rotated, thereby synchronously adjusting the sliding block 54 to ensure that the center of the clamping area is aligned with the tensile axis and to prevent the clamping area from shifting when the sliding block 54 is moved alone, thus affecting the test accuracy. It should be noted that, for ease of operation, the adjusting bolts 55 are set in pairs and symmetrically distributed on both sides of the sliding block 54. During adjustment, simply rotate the knobs 56 at both ends synchronously to achieve synchronous movement of the sliding block 54.
[0021] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A device for testing the heat seal strength of aluminum foil packaging, characterized in that: include: The installation platform (1) has a two-layer structure; Drive device (2), which is disposed in the lower structure; Top plate (3), the top plate (3) is disposed on the top of the mounting platform (1); A tensioning mechanism (4) is disposed between the top plate (3) and the driving device (2); Clamping mechanism (5); The clamping mechanism (5) includes: A fixed column (51) is fixedly connected to the tensioning mechanism (4); Mounting block (52), which is fixed on the fixing post (51), and the surface of the mounting block (52) is provided with a sliding groove (53); Sliding blocks (54), the sliding blocks (54) are slidably disposed in pairs in the sliding groove (53); An adjusting bolt (55) passes through the pair of sliding blocks (54), and the surface of the adjusting bolt (55) is provided with two opposite threaded sections.
2. The packaging aluminum film heat seal strength testing device according to claim 1, characterized in that: The drive device (2) includes a drive motor (21), which is located in the lower mechanism of the mounting platform (1). The output end of the drive motor (21) is connected to a gear, which is fixedly connected to a lead screw (23). The other end of the lead screw (23) is connected to a bearing of the top plate (3).
3. The packaging aluminum film heat seal strength testing device according to claim 2, characterized in that: The tensioning mechanism (4) includes a slider (41) which is threadedly engaged with a lead screw (23), and a slide bar (22) is provided on the mounting platform (1), through which the slider (41) passes.
4. The packaging aluminum film heat seal strength testing device according to claim 3, characterized in that: The clamping mechanisms (5) are arranged in pairs, one of which is fixed to the slider (41) and the other is fixed to the top plate (3).
5. The packaging aluminum film heat seal strength testing device according to claim 1, characterized in that: The adjusting bolts (55) are arranged in pairs and symmetrically on both sides of the sliding block (54).
6. The packaging aluminum film heat seal strength testing device according to claim 5, characterized in that: The end of the adjusting bolt (55) is provided with a knob (56).