A PE release film strength testing device

Abstract

This invention relates to the field of film testing technology, and particularly to a PE release film strength testing device, comprising a tensile testing machine including a frame and a clamping module; the PE release film strength testing device also includes a pushing unit, which is mounted on the frame and includes a connecting frame connected to the frame. The connecting frame is equipped with a limiting part and a pushing part, and the limiting part is connected to multiple extending parts, each of which is connected to an extending head. The clamping module, pushing unit, and pressing unit of this invention work together in a coordinated manner, eliminating the need for multiple dedicated testing devices to complete puncture tests, tensile tests, and friction tests on PE release films. This integrated design significantly saves equipment space and cost.

Description

Technical Field

[0001] This invention relates to the field of thin film testing technology, and in particular to a PE release film strength testing device. Background Technology

[0002] PE release film is a polymer industrial material made of polyethylene as the base material and coated with silicone release agent. Due to its excellent flexibility, corrosion resistance and peeling performance, PE release film is widely used in many fields such as electronics, packaging, and building materials. Its strength performance directly determines the reliability and stability of the product during production, transportation, storage and use.

[0003] PE release films must withstand various complex mechanical forces, such as punctures from sharp objects during transportation, tensile deformation during handling, and frictional losses from contact with other materials. Failure to meet any of these strength indicators can lead to damage or failure of the release film, consequently affecting the quality of downstream products and increasing production costs and transportation losses. Currently, the industry requires dedicated puncture testing machines, tensile testing machines, and friction testing machines to perform puncture, tensile, and friction tests on PE release films. These machines are independently set up, have limited functions, require significant investment in capital and space, and substantially increase testing costs for companies. Furthermore, the testing process necessitates frequent transfer and clamping of PE release film samples between different devices, complicating the operational procedures. The current puncture testing methods are cumbersome and inefficient. They are also limited in scope and cannot simulate the different types of punctures that PE release films may encounter during actual transportation, such as sharp points, edges, and flat surfaces. To complete tests for multiple types of punctures, it is necessary to frequently change the puncture head and testing fixtures, which is cumbersome and time-consuming, significantly reducing testing efficiency. In addition, current puncture tests mostly adopt a single-area, single-test mode, requiring multiple samples to be tested for different types of punctures. However, differences in material uniformity and thickness deviations between different samples can lead to poor comparability of puncture test data for different types of punctures. This makes it impossible to accurately reflect the strength performance of the same PE release film under different puncture conditions, thus affecting the comprehensiveness and reliability of the test results.

[0004] Therefore, there is an urgent need to provide a PE release film strength testing device that can improve the efficiency of PE release film strength testing and simulate actual working conditions. Summary of the Invention

[0005] Therefore, it is necessary to provide a PE release film strength testing device to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a PE release film strength testing device, comprising: a tensile testing machine, wherein the tensile testing machine includes a frame and a clamping module.

[0007] The PE release film strength testing equipment also includes a pushing unit, which is set on the frame. The pushing unit includes a connecting frame connected to the frame. A limiting part and a pushing part are installed on the connecting frame. Multiple extension parts are connected to the limiting part, and each extension part is connected to an extension head.

[0008] The various top extension heads have different structures for use in release film tip puncture testing, edge puncture testing, and surface puncture testing.

[0009] The PE release film strength testing equipment also includes a clamping unit, which is mounted on the frame. The clamping unit includes a movable plate located to the right of the limiting part, with multiple clamping parts connected to the movable plate, and a friction testing part also connected to the movable plate.

[0010] Multiple clamping parts press the release film onto the limiting part and divide it into multiple non-interfering areas. The pushing part simultaneously pushes multiple extending parts and multiple extending heads to perform different types of puncture tests on multiple areas of the same release film. Multiple clamping parts press the lower end of the release film onto the limiting part, and the clamping module clamps the upper end of the release film and moves it upward to perform a release film tensile test. The friction test part presses the release film onto the limiting part, and the clamping module clamps the upper end of the release film and moves it upward to perform a release film friction resistance test. Multiple tests simulate actual use conditions.

[0011] Preferably, the clamping unit further includes a driving component that is fixedly connected to the movable plate and is used to drive the movable plate to move in the direction of the limiting part. The driving component is detachably connected to the frame via a mounting bracket.

[0012] Preferably, the limiting part includes a limiting plate installed on the connecting frame, and a plurality of evenly distributed pressing grooves are provided on the right end of the limiting plate, and a placement groove is provided between every two pressing grooves on the limiting plate.

[0013] Preferably, the pushing part includes a second driving component installed in the middle of the connecting frame, and a pushing plate is installed at the right end of the second driving component.

[0014] Preferably, the top extension includes a movable rod that slides through the placement groove. The left end of the movable rod slides through the limiting plate and is fixedly connected to the pushing plate. A sensor is installed at the right end of the movable rod in the placement groove. A snap-fit ​​plate is installed at the right end of the sensor and engages with the corresponding top extension head.

[0015] Preferably, the clamping part includes a sliding through hole on the movable plate, a U-shaped connecting frame is installed at the right end of the sliding through hole, an internally threaded tube is installed at the right end of the connecting frame, an adjusting screw is internally threaded through the internally threaded tube, and the left end of the adjusting screw slides through the connecting frame.

[0016] Preferably, the clamping part further includes a movable frame rotatably connected to the left end of the adjusting screw. The movable frame has a U-shaped structure with the opening facing left. A clamping head is installed at the left end of the movable frame, and a connecting spring is installed between the right end of the movable frame and the connecting frame.

[0017] Preferably, the friction testing section includes a test through hole opened on the movable plate, a fixed plate is disposed in the test through hole, a second sensor is installed on the right end of the fixed plate, the second sensor is mounted on the movable plate by a fixing bracket, and a friction medium is detachably installed on the left end of the fixed plate.

[0018] Preferably, the structures of the plurality of top extension heads are respectively a right-angled triangular strip structure, a triangular pyramid structure, and an arc-shaped surface structure.

[0019] Preferably, the inner surface of the pressing groove is covered with an anti-slip pad.

[0020] In summary, the present invention has the following beneficial technical effects: 1. The clamping module, pushing unit and pressing unit of the present invention cooperate with each other and work together, so that multiple special testing equipment can be equipped to complete the puncture test, tensile test and friction test of PE release film. The integrated design saves equipment space and cost, and at the same time adapts to the simulation needs of various working conditions such as puncture, tensile and friction that PE release film may face during transportation. It can comprehensively predict the risk of damage, deformation and performance degradation of PE release film during use, and provide comprehensive data support for the reliability of subsequent applications.

[0021] 2. The pushing unit and pressing unit used in this invention can simultaneously perform three different types of puncture tests on PE release film: tip puncture, edge puncture, and surface puncture, without the need for frequent replacement of test components. Simultaneously, the multiple pressing parts of the pressing unit can compress the same release film and divide it into multiple non-interfering test areas. Combined with the synchronous driving of multiple extending parts by the pushing unit, this enables simultaneous testing of multiple areas and multiple puncture types on the same release film. This significantly reduces the number of operational steps for multiple types of puncture tests, shortens the testing cycle, avoids the cumbersome operation caused by repeatedly changing test samples, and significantly improves the efficiency of puncture testing. Furthermore, since multiple puncture tests are performed on the same PE release film, the influence of external factors such as material and thickness differences between different samples on the test results is effectively avoided, ensuring the comparability and accuracy of the test data. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 A three-dimensional structural schematic diagram of the present invention is shown.

[0024] Figure 2 A front view of the present invention is shown.

[0025] Figure 3 A left view of the present invention is shown.

[0026] Figure 4 It shows Figure 3 Sectional view of AA.

[0027] Figure 5 A schematic diagram of the pushing unit of the present invention is shown.

[0028] Figure 6 A schematic diagram of the pressing unit of the present invention is shown.

[0029] Figure 7 A schematic diagram of the present invention for performing a tensile test on a PE release film is shown.

[0030] Figure 8 The diagram illustrates the working principle of the present invention for puncture testing of PE release film.

[0031] Figure 9 The diagram shows a working schematic of the present invention for friction testing of PE release film.

[0032] The above-mentioned figures include the following reference numerals: 1. Tensile testing machine; 10. Frame; 11. Clamping module; 2. Pushing unit; 20. Connecting frame; 21. Limiting part; 210. Limiting plate; 211. Pressing groove; 212. Placement groove; 22. Pushing part; 220. Drive component two; 221. Pushing plate; 23. Top extension part; 230. Moving rod; 231. Sensor one; 232. Snap-fit ​​plate; 24. Top extension head; 3. Pressing unit; 30. Moving plate; 31. Pressing part; 310. Sliding through hole; 311. Connecting frame; 312. Internally threaded pipe; 313. Adjusting screw; 314. Moving frame; 315. Pressing head; 316. Connecting spring; 32. Friction testing part; 320. Sensor two; 321. Fixing plate; 322. Friction medium; 33. Drive component one. Detailed Implementation

[0033] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways not described herein, and those skilled in the art can make similar modifications without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] See Figures 1-3 A PE release film strength testing device includes a tensile testing machine 1, which includes a frame 10 and a clamping module 11. The tensile testing machine 1 also includes a lifting module, a control module and a display module. The tensile testing machine 1 is an existing tensile testing device.

[0035] See Figure 2 , Figure 4 and Figure 5 The PE release film strength testing equipment also includes a pushing unit 2 set on the frame 10. The pushing unit 2 includes a connecting frame 20 that is detachably connected to the frame 10 by bolts. The connecting frame 20 is equipped with a limiting part 21 and a pushing part 22. The limiting part 21 is connected to a plurality of top extension parts 23. Each of the plurality of top extension parts 23 is connected to a top extension head 24. The plurality of top extension heads 24 have different structures to be used for tip puncture test, edge puncture test and surface puncture test of the release film.

[0036] See Figure 2 , Figure 4 and Figure 6 The PE release film strength testing equipment also includes a pressing unit 3 set on the frame 10. The pressing unit 3 includes a movable plate 30 set to the right of the limiting part 21. Multiple pressing parts 31 are connected to the movable plate 30. Friction testing parts 32 are also connected to the movable plate 30.

[0037] In practice, the PE release film to be tested is selected and cut to the required test size. During the PE release film puncture test, the cut PE release film is placed at the limiting part 21. Then, the moving plate 30 drives multiple pressing parts 31 to move towards the limiting part 21. The multiple pressing parts 31 press the release film firmly onto the limiting part 21 and divide it into multiple non-interfering areas. Subsequently, the pushing part 22 simultaneously pushes multiple extending parts 23. The multiple extending parts 23 drive multiple extending heads 24 to simultaneously perform different types of puncture tests on multiple areas of the same release film (e.g., ...). Figure 8 As shown in the figure, this effectively reduces the steps for puncture testing of release films with different structures, and improves the efficiency of various types of puncture tests; multiple regions of the same release film complement each other, and multiple tests are performed on the same release film, effectively avoiding the influence of external factors such as material and thickness differences between different samples on the test results, and ensuring the accuracy of various types of puncture test results.

[0038] During the PE release film tensile test, the cut PE release film is placed at the limiting part 21. Multiple pressing parts 31 press the lower end of the release film against the limiting part 21. Then, the clamping module 11 clamps the upper end of the release film. The control module then controls the lifting module to move the clamping module 11 upward, and the clamping module 11 stretches the release film (e.g., ...). Figure 7 As shown in the figure, a release film tensile test is performed.

[0039] During the PE release film friction test, the cut PE release film is placed at the limiting part 21. The moving plate 30 drives the friction testing part 32 to move towards the limiting part 21, and the friction testing part 32 presses the release film onto the limiting part 21. Then, the clamping module 11 clamps the upper end of the release film and moves it upward (e.g., ...). Figure 9 As shown in the figure, the release film was subjected to a friction resistance test.

[0040] Multiple tests, including puncture, tensile, and friction tests, can effectively simulate the actual usage of PE release film during transportation. This allows for the prediction of risks of damage, deformation, and performance degradation during transportation, effectively reducing transportation losses, ensuring the stability of the film's mechanical and performance properties, and guaranteeing reliable subsequent applications. Furthermore, it eliminates the need for multiple dedicated testing devices, significantly saving space and costs.

[0041] See Figure 2 , Figure 4 , Figure 5 and Figure 6 The clamping unit 3 further includes a drive component 33 that is fixedly connected to the moving plate 30 and is used to drive the moving plate 30 to move in the direction of the limiting part 21. The drive component 33 is detachably connected to the frame 10 through a mounting bracket. The drive component 33 is an existing linear drive device, such as a hydraulic push rod or an electric push rod, etc., and is not limited to this specific device.

[0042] In actual operation, the drive component 33 is connected to the control module via an electrical signal. Before testing, the mounting bracket is fixed on the frame 10 with bolts. When clamping and limiting the PE release film, the control module controls the drive component 33 to work, and the drive component 33 drives the moving plate 30 to move towards the limiting part 21.

[0043] See Figure 4 , Figure 5 and Figure 6 The limiting part 21 includes a limiting plate 210 installed on the connecting frame 20. The right end of the limiting plate 210 has a plurality of evenly distributed pressing grooves 211. The inner surface of the pressing grooves 211 is covered with an anti-slip pad. A placement groove 212 is provided between every two pressing grooves 211 on the limiting plate 210.

[0044] See Figure 4 , Figure 5 and Figure 6 The pressing part 31 includes a sliding through hole 310 opened on the movable plate 30. A U-shaped connecting frame 311 is installed at the right end of the sliding through hole 310. An internally threaded tube 312 is installed at the right end of the connecting frame 311. An adjusting screw 313 is internally threaded to the internally threaded tube 312. The left end of the adjusting screw 313 slides through the connecting frame 311. The pressing part 31 also includes a movable frame 314 rotatably connected to the left end of the adjusting screw 313. The movable frame 314 has a U-shaped structure with the opening facing left. A pressing head 315 is installed at the left end of the movable frame 314. A connecting spring 316 is installed between the right end of the movable frame 314 and the connecting frame 311.

[0045] In practice, during the puncture test of the PE release film, multiple adjusting screws 313 are threadedly connected to the internally threaded tube 312. The adjusting screws 313 push the clamping head 315 out of the connecting frame 311 via the moving frame 314. The distance between the clamping head 315 and the moving plate 30 provides space for the release film to bulge during the puncture test. During the test, the release film to be tested is placed at the right end of the limiting plate 210. Subsequently, the moving plate 30 moves the adjusting screws 313, the moving frame 314, and the clamping head 315 towards the release film via multiple connecting frames 311. The multiple clamping heads 315 press the release film tightly. Located on the limiting plate 210, multiple clamping heads 315 cooperate with multiple clamping grooves 211, effectively increasing the contact area between the release film and the limiting plate 210. The anti-slip pads in the clamping grooves 211 increase the friction between the clamping grooves 211 and the release film, preventing the release film from sliding during testing. At the same time, the cooperation of multiple clamping heads 315 and multiple clamping grooves 211 can distinguish the same release film into multiple areas, and the two ends of each area are clamped by two corresponding clamping heads 315, thereby ensuring that each area does not interfere with each other during testing, thus ensuring the accuracy of various types of puncture test results.

[0046] See Figure 4 , Figure 5 and Figure 6 The pushing part 22 includes a second driving component 220 installed in the middle of the connecting frame 20. The second driving component 220 is an existing linear driving device, such as a hydraulic push rod or an electric push rod, etc., which is not limited to this. A pushing plate 221 is installed on the right end of the second driving component 220.

[0047] See Figure 4 , Figure 5 and Figure 6The top extension 23 includes a movable rod 230 that slides through the placement groove 212. The left end of the movable rod 230 slides through the limiting plate 210 and is fixedly connected to the pushing plate 221 by bolts. The right end of the movable rod 230 is equipped with a sensor 231 located in the placement groove 212. The right end of the sensor 231 is equipped with a snap-fit ​​plate 232. The snap-fit ​​plate 232 is engaged with the corresponding top extension head 24. The structures of the multiple top extension heads 24 are respectively a right-angled triangular strip structure, a triangular pyramid structure, and an arc-shaped surface structure.

[0048] In actual operation, the second driving component 220 is connected to the control module via an electrical signal. The first sensor 231 is an existing pressure sensor, which is also connected to the control module via an electrical signal. During the puncture test of the PE release film, after the release film is pressed and limited on the limiting plate 210, the control module controls the second driving component 220 to work. The second driving component 220 drives multiple moving rods 230 to move towards the release film via the pushing plate 221. The multiple moving rods 230 drive multiple sensors 231, multiple snap-fit ​​plates 232, and multiple... The top extension head 24 moves towards the release film and pushes the release film. The top extension head 24 with a right-angled triangular strip structure performs an edge puncture test on the release film, the top extension head 24 with a triangular pyramid structure performs a tip puncture test on the release film, and the top extension head 24 with an arc-shaped surface structure performs a surface puncture test on the release film. Each sensor 231 is only squeezed by the release film in the corresponding area, which can effectively reflect the puncture intensity of different structures on the release film and display it through the display module, avoiding the release film from being affected by multiple puncture tests at the same time.

[0049] See Figure 4 , Figure 5 and Figure 6 The friction testing section 32 includes a test through hole opened on the movable plate 30. A fixed plate 321 is provided in the test through hole. A second sensor 320 is installed on the right end of the fixed plate 321. The second sensor 320 is installed on the movable plate 30 through a fixing bracket. A friction medium 322 is detachably installed on the left end of the fixed plate 321. The friction medium 322 is made of multiple materials and can be selected according to the requirements.

[0050] In specific operation, sensor 320 is an existing pressure sensor. Sensor 320 is connected to the control module via an electrical signal. During friction testing, the adjusting screw 313 is separated from the internal threaded tube 312. The tensioned connecting spring 316 is reset and drives the pressing head 315 into the sliding through hole 310 via the moving frame 314. Subsequently, the moving plate 30 drives the friction medium 322 on sensor 320 and the fixed plate 321 to move towards the release film, pressing the release film onto the limiting plate 210. At this time, sensor 320 is observed. The control module controls the drive component 33 to work, ensuring that the pressure transmitted by sensor 320 meets the test requirements. Once the value transmitted by sensor 320 reaches the required level, the drive component 33 maintains a stable pressure state. At this time, the friction medium 322 is tightly attached to the release film. Then, the clamping module 11 clamps the upper end of the release film. Subsequently, the control module controls the lifting module to work and drive the clamping module 11 to move upward. The clamping module 11 drives the release film to move, and the release film slides relative to the friction medium 322, thereby conducting a release film friction test.

[0051] The same PE release film strength testing equipment can perform multiple tests on PE release film, including puncture test, tensile test and friction test, effectively simulating the actual use of PE release film during transportation and improving the practicality of the testing equipment.

[0052] In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise stated, "a plurality of" means two or more.

[0053] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A PE release film strength testing device, comprising a tensile testing machine, wherein the tensile testing machine includes a frame and a clamping module, characterized in that, Also includes: A pushing unit is mounted on a frame. The pushing unit includes a connecting frame connected to the frame. A limiting part and a pushing part are installed on the connecting frame. Multiple extension parts are connected to the limiting part, and each extension part is connected to an extension head. The various top extension heads have different structures for use in release film tip puncture testing, edge puncture testing, and surface puncture testing; A clamping unit is mounted on the frame. The clamping unit includes a movable plate located to the right of the limiting part. Multiple clamping parts are connected to the movable plate, and a friction testing part is also connected to the movable plate. Multiple clamping parts press the release film onto the limiting part and divide it into multiple non-interfering areas. The pushing part simultaneously pushes multiple extending parts and multiple extending heads to perform different types of puncture tests on multiple areas of the same release film. Multiple clamping parts press the lower end of the release film onto the limiting part, and the clamping module clamps the upper end of the release film and moves it upward to perform a release film tensile test. The friction test part presses the release film onto the limiting part, and the clamping module clamps the upper end of the release film and moves it upward to perform a release film friction resistance test. Multiple tests simulate actual use conditions. The limiting part includes a limiting plate installed on the connecting frame. The right end of the limiting plate has a plurality of evenly distributed pressing grooves, and a placement groove is provided between every two pressing grooves on the limiting plate. The pushing part includes a second driving component installed in the middle of the connecting frame, and a pushing plate is installed at the right end of the second driving component. The top extension includes a movable rod that slides through the placement groove. The left end of the movable rod slides through the limiting plate and is fixedly connected to the pushing plate. A sensor is installed at the right end of the movable rod in the placement groove. A snap-fit ​​plate is installed at the right end of the sensor and engages with the corresponding top extension head.

2. The PE release film strength testing device according to claim 1, characterized in that: The clamping unit also includes a drive component that is fixedly connected to the movable plate and is used to drive the movable plate to move in the direction of the limiting part. The drive component is detachably connected to the frame through a mounting bracket.

3. The PE release film strength testing device according to claim 1, characterized in that: The clamping part includes a sliding through hole on the movable plate. A U-shaped connecting frame is installed at the right end of the sliding through hole. An internally threaded tube is installed at the right end of the connecting frame. An adjusting screw is internally threaded through the internally threaded tube. The left end of the adjusting screw slides through the connecting frame.

4. The PE release film strength testing device according to claim 3, characterized in that: The clamping part also includes a movable frame rotatably connected to the left end of the adjusting screw. The movable frame has a U-shaped structure with the opening facing left. A clamping head is installed at the left end of the movable frame, and a connecting spring is installed between the right end of the movable frame and the connecting frame.

5. The PE release film strength testing device according to claim 1, characterized in that: The friction testing section includes a test through hole opened on a movable plate, a fixed plate is installed in the test through hole, a second sensor is installed on the right end of the fixed plate, the second sensor is installed on the movable plate through a fixing bracket, and a friction medium is detachably installed on the left end of the fixed plate.

6. The PE release film strength testing device according to claim 1, characterized in that: The structures of the multiple top extension heads are respectively a right-angled triangular strip structure, a triangular pyramid structure, and an arc-shaped surface structure.

7. The PE release film strength testing device according to claim 1, characterized in that: The inner surface of the pressing groove is covered with an anti-slip pad.

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