Plastic film tensile strength detection device
By designing the detection device for slide rails and slides, the problem of destroying the integrity of the film during cutting process in the prior art and being unable to evaluate the stress distribution in the width direction is solved, and the accurate detection of the tensile strength of plastic films is achieved.
Patent Information
- Application Number
- CN202421251530.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-06-04
AI Technical Summary
Existing plastic film tensile strength detection equipment can easily destroy the integrity of the film during the cutting process, resulting in inaccurate test results and the incompleteness of the film's width direction cannot be fully evaluated.
A detection device including a slide rail and a slide is designed. By adjusting the distance between the slides, the tension force of the plastic film is accurately controlled, and the tensile strength is detected by using a tension gauge.
The device improves the flexibility and stability of detection, ensures the accuracy and reliability of test results, and can adapt to different types of plastic films and test scenarios.
Smart Images
Figure CN222850407U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of film tensile strength detection, in particular to a plastic film tensile strength detection device. Background Art
[0002] Plastic film tensile strength testing equipment plays a core role in the production, quality control and R&D of plastic films. It is mainly used to evaluate the performance of plastic films when subjected to tensile forces. However, this equipment also faces some challenges in practical applications.
[0003] First, since plastic films are usually continuous and uniform during the production process, the cutting process often destroys their integrity, resulting in differences in structure between the test sample and the actual film used. This difference may have an adverse effect on the test results of tensile strength.
[0004] Secondly, when a wider plastic film is subjected to stress, the stress distribution in the width direction may not be uniform. However, the small section of film after cutting cannot fully reflect this width effect, so it is impossible to fully evaluate the tensile properties of the film.
[0005] In addition, during the cutting process, defects such as burrs and cracks may appear on the edge of the film. These defects may become stress concentration points in the tensile strength test, resulting in high or low test results, thus affecting the accuracy and reliability of the test.
[0006] Therefore, when using plastic film tensile strength testing equipment, it is necessary to pay attention to these challenges and take corresponding measures to reduce the impact of cutting on the test results to ensure the accuracy and reliability of the test results. Utility Model Content
[0007] The main purpose of the utility model is to provide a plastic film tensile strength detection device, which can effectively solve the problems raised in the background technology.
[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0009] A plastic film tensile strength detection device comprises a connecting seat and a tensile gauge, wherein the lower end of the tensile gauge is provided with a connecting seat; the lower end of the connecting seat is provided with a mounting seat, and two slide rails are mounted via mounting bars, the two slide rails are designed in parallel, a first slide seat and a second slide seat are connected to the two slide rails via fastening bolts and limit blocks, a first roller is mounted between the two first slide seats, a second roller is mounted between the two second slide seats, and a plastic film is wound and fixed on the first roller and the second roller;
[0010] A connecting strip is installed at the upper end of the second slide, and the connecting strip and the tensile gauge are connected through a mounting piece. By adjusting the distance between the first slide and the second slide, the tension of the plastic film on the first roller and the second roller is adjusted, and the compressive strength is detected by the tensile gauge.
[0011] As a further preferred solution of the utility model, a slide groove is provided on the end surface of the slide rail, the limit block is limited in the slide groove, the edge of the limit block is designed to be arc-shaped, and the surface of the limit block is designed to be smooth. A linear motion actuator is installed at the other end of the slide rail, and the first slide is driven to move by the linear motion actuator, thereby adjusting the distance between the first slide and the second slide;
[0012] As a further preferred solution of the utility model, a bearing device is provided at the connection between the first slide and the first roller, the fastening bolt passes through the screw hole of the first slide and is threadedly connected to the limit block, and a bearing device is provided at the connection between the second slide and the second roller, and another fastening bolt passes through the screw hole of the second slide and is threadedly connected to another limit block;
[0013] As a further preferred embodiment of the present invention, the mounting bar and the slide rail are perpendicular to each other, and the mounting bar and the slide rail are welded and fixed, and the mounting bar is used to block the upper end opening of the slide rail to prevent the limit block from sliding out, and the mounting bar and the mounting seat are fixed by bolts;
[0014] As a further preferred solution of the utility model, the mounting seat is connected to the connecting seat by bolts, and the connecting seat is fixed to the housing of the tensile gauge by welding, and the tensile gauge is located at the center of the two slide rails;
[0015] As a further preferred embodiment of the present invention, a waist hole is provided on the end face of the connecting strip, the connecting strip is fixed to the second slide seat by bolts and gaskets, a rubber pad is provided at the connection between the connecting strip and the second slide seat, and the mounting piece is fixed to the connecting strip by bolts.
[0016] Compared with the prior art, the utility model has the following beneficial effects:
[0017] In the utility model, the adjustment mechanism of the slide rail and the slide seat is used to make the detection device extremely flexible. During the detection process, the operator can easily adjust the position of the first slide seat and the second slide seat on the slide rail according to the characteristics of the plastic film and the test requirements, thereby realizing accurate control of the length of the film sample. This flexibility not only improves the detection efficiency, but also enables the device to adapt to more types of plastic films and different test scenarios.
[0018] Secondly, the design of the slide rail and the slide seat helps to improve the stability of the test. The straightness of the slide rail and the stability of the slide seat ensure the stability of the film during the stretching process, avoiding test errors caused by the instability of the device itself. At the same time, the design of the limit block effectively limits the movement range of the slide seat on the slide rail, preventing damage to the device or test failure due to excessive movement. This stability ensures the accuracy and reliability of the test results. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0020] Figure 2 It is a diagram showing the overall structure of the utility model;
[0021] Figure 3 It is a front view of the overall structure of the utility model;
[0022] Figure 4 This is a display diagram of the dynamometer, slide seat and roller of the utility model.
[0023] In the figure: 1, slide rail; 2, first slide seat; 3, first roller; 4, second slide seat; 5, second roller; 6, mounting strip; 7, mounting seat; 8, connecting seat; 9, dynamometer; 10, connecting strip; 11, mounting piece; 12, fastening bolt; 13, limit block. DETAILED DESCRIPTION
[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0025] like Figure 1 - Figure 4 As shown, a plastic film tensile strength testing device is mainly composed of a connecting seat 8 and a tensile gauge 9, wherein the lower end of the tensile gauge 9 is firmly mounted on the connecting seat 8 to ensure the stability and accuracy of the entire device. A mounting seat 7 is arranged at the lower part of the connecting seat 8, and the mounting seat 7 is firmly connected to two parallel slide rails 1 through a mounting bar 6.
[0026] On the slide rail 1, by ingeniously using the fastening bolts 12 and the limit blocks 13, we have achieved flexible connection and positioning of the first slide 2 and the second slide 4. Two first slides 2 and two second slides 4 are respectively installed on the two slide rails 1, and the relative positions between them can be adjusted as needed. In addition, a first roller 3 is installed between the two first slides 2, and a second roller 5 is installed between the two second slides 4. The design of these two sets of rollers enables the plastic film to be stably wound and fixed thereon, providing a good prerequisite for the detection of tensile strength.
[0027] A connecting strip 10 is also installed at the upper end of the second slide 4, and the connecting strip 10 is closely connected to the tensile gauge 9 through the mounting member 11. By adjusting the distance between the first slide 2 and the second slide 4, we can accurately control the tensile force exerted on the plastic film on the first roller 3 and the second roller 5, so as to accurately detect the tensile strength of the plastic film using the tensile gauge 9.
[0028] In addition, a slide groove is specially provided on the end surface of the slide rail 1, and the limit block 13 is cleverly restricted in the slide groove. This design not only ensures the smooth sliding between the slide rail 1 and the slide seat, but also greatly improves the overall stability of the device. The edge of the limit block 13 is designed in an arc shape and has a smooth surface, which not only reduces the friction resistance during sliding, but also improves the service life of the device.
[0029] In order to further improve the automation of the device, we installed a linear motion actuator at the other end of the slide rail 1. This actuator can accurately control the movement of the first slide 2, thereby conveniently adjusting the distance between the first slide 2 and the second slide 4, making the entire detection process more efficient and convenient.
[0030] We have also carefully designed the connection part. Bearing devices are provided between the first slide 2 and the first roller 3, and between the second slide 4 and the second roller 5, which not only ensures the flexibility of rolling, but also reduces friction loss. At the same time, the fastening bolt 12 passes through the slide screw hole and is threadedly connected to the limit block 13, ensuring a stable connection between the slide and the slide rail 1.
[0031] The design of the mounting bar 6 is also ingenious. It is perpendicular to the slide rail 1 and fixed together by welding. This can not only effectively prevent the limit block 13 from sliding out of the slide rail 1, but also enhance the structural strength of the entire device. In addition, the mounting bar 6 is fixed to the mounting seat 7 by bolts, making the installation of the entire device easier and more secure.
[0032] Finally, the connection seat 8 and the housing of the tensile gauge 9 are fixed by welding to ensure that the tensile gauge 9 can stably work at the center of the two slide rails 1. The end surface of the connecting bar 10 is provided with a waist hole and fixed to the second slide seat 4 by bolts and gaskets.
[0033] Working process: The plastic film to be tested is wound and fixed on the first roller 3 and the second roller 5. By adjusting the position of the first slide 2 and the second slide 4 on the slide rail 1, the length of the film sample can be accurately controlled. At the same time, since the slide rail 1 is provided with a slide groove and the limit block 13 is limited in the slide groove, the smooth sliding and stable positioning of the slide on the slide rail 1 are ensured; next, the linear motion actuator is started, and the actuator will drive the first slide 2 to move linearly along the slide rail 1. As the first slide 2 moves, the film sample is stretched, thereby generating tension. Since the first slide 2 and the second slide 4 are respectively connected to the tensile gauge 9 through the connecting strip 10, the tensile gauge 9 can measure and record the tension of the film in real time; during the stretching process, the first roller 3 and the second roller 5 play a supporting and guiding role, ensuring that the film can be smoothly wound and stretched thereon. At the same time, the setting of the bearing device reduces the friction resistance between the slide and the roller, making the stretching process smoother; when the predetermined stretching length or tension value is reached, the linear motion actuator stops working and the stretching process ends. At this time, the value displayed by the tensile gauge 9 is the tensile strength of the plastic film under specific conditions; by observing and recording the readings of the tensile gauge 9, the tensile strength of the film under different samples or different conditions can be compared and analyzed. In addition, the device can also perform repeated tests as needed to improve the accuracy and reliability of the test results.
[0034] It should be noted that, in this article, relational terms such as first and second (number one, number two), etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. However, the terms "include", "comprises" or any other variations are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or include elements that are inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device that includes the elements.
[0035] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A plastic film tensile strength testing device, comprising a connecting seat (8) and a tensile gauge (9), wherein the connecting seat (8) is provided at the lower end of the tensile gauge (9), characterized in that: A mounting seat (7) is provided at the lower end of the connecting seat (8), and two slide rails (1) are installed via a mounting strip (6); the two slide rails (1) are designed to be parallel, and a first slide seat (2) and a second slide seat (4) are connected to the two slide rails (1) via fastening bolts (12) and limit blocks (13); a first roller (3) is installed between the two first slide seats (2), and a second roller (5) is installed between the two second slide seats (4); and a plastic film is wound and fixed on the first roller (3) and the second roller (5); A connecting strip (10) is installed at the upper end of the second slide (4), and the connecting strip (10) and the tensile gauge (9) are connected via a mounting member (11). By adjusting the distance between the first slide (2) and the second slide (4), the tensile force of the plastic film on the first roller (3) and the second roller (5) is adjusted, and the compressive strength is detected using the tensile gauge (9).
2. A plastic film tensile strength testing device according to claim 1, characterized in that: The end surface of the slide rail (1) is provided with a slide groove, the limit block (13) is limited in the slide groove, the edge of the limit block (13) is designed to be arc-shaped, and the surface of the limit block (13) is designed to be smooth. A linear motion actuator is installed at the other end of the slide rail (1), and the linear motion actuator drives the first slide seat (2) to move, thereby adjusting the distance between the first slide seat (2) and the second slide seat (4).
3. A plastic film tensile strength testing device according to claim 2, characterized in that: A bearing device is provided at the connection between the first slide seat (2) and the first roller (3); the fastening bolt (12) passes through the screw hole of the first slide seat (2) and is threadedly connected to the limit block (13); a bearing device is provided at the connection between the second slide seat (4) and the second roller (5); another fastening bolt (12) passes through the screw hole of the second slide seat (4) and is threadedly connected to another limit block (13).
4. A plastic film tensile strength testing device according to claim 3, characterized in that: The mounting strip (6) and the slide rail (1) are perpendicular to each other, and the mounting strip (6) and the slide rail (1) are fixed by welding. The mounting strip (6) is used to block the opening at the upper end of the slide rail (1) to prevent the limit block (13) from sliding out. The mounting strip (6) and the mounting seat (7) are fixed by bolts.
5. A plastic film tensile strength testing device according to claim 4, characterized in that: The mounting seat (7) is connected to the connecting seat (8) by bolts, and the connecting seat (8) is fixed to the outer shell of the tensile gauge (9) by welding, and the tensile gauge (9) is located at the center of the two slide rails (1).
6. A plastic film tensile strength testing device according to claim 5, characterized in that: The end surface of the connecting strip (10) is provided with a waist hole, the connecting strip (10) is fixed to the second slide seat (4) by means of bolts and washers, a rubber pad is provided at the connection between the connecting strip (10) and the second slide seat (4), and the mounting member (11) is fixed to the connecting strip (10) by means of bolts.