Detection device for testing tensile strength of thin film

Abstract

The invention relates to the technical field of new material detection, in particular to a detection device for testing the tensile strength of a thin film, which comprises an operation table and a mounting frame fixedly mounted at the top of the operation table, and further comprises at least one placing assembly arranged on the mounting frame and used for placing a winding drum wound with the thin film; the lifting frame is mounted on the mounting frame in a sliding manner; the lifting unit is arranged on the mounting frame and used for driving the lifting frame to move in the vertical direction; each clamping assembly comprises two clamping units which are sequentially arranged in the vertical direction and used for clamping the two ends of the to-be-detected part of the thin film; the at least one detection unit is arranged on the lifting frame and used for driving the clamping unit located above to move upwards and detecting the pulling force borne by the thin film; the thin film does not need to be cut repeatedly, and when the thin film is detected each time, only the top end of the to-be-detected part of the next thin film needs to be fixed, so that the number of times of fixing the thin film is reduced, and the detection efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of new material testing technology, and in particular to a testing device for testing the tensile strength of thin films. Background Technology

[0002] With the increasing consumption of energy, energy conservation and environmental protection have become one of the important themes of social development. New energy sources and new materials have become important development directions. Among them, thin film materials refer to materials that are innovative in composition, structure, process, or function, and exist and are applied in thin-layer form. They often play a key role in areas where traditional materials cannot perform. Mechanical properties (including tensile strength, elongation at break, and elastic modulus) are among the most basic and important performance indicators of such thin film materials. Current technology generally involves fixing the cut film on two clamps, driving one clamp to move, changing the distance between the two clamps, recording the tensile force the film withstands during the stretching process to break and the length of the sample at break, and then judging the tensile strength and elongation at break of the film.

[0003] However, it is worth considering that when inspecting films on the same take-up drum to assess the uniformity of the quality of the same roll of film, the film needs to be removed from the take-up drum, cut, and the broken film needs to be removed from two clamps for each inspection and replaced with the next film to be inspected. This requires repeatedly fixing the film, which is not convenient for inspecting films on the same take-up drum and has certain limitations.

[0004] Therefore, in order to solve the above problems, a more suitable facility that meets the needs of users is needed. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a testing device for testing the tensile strength of a film, so as to solve the problem that the film needs to be repeatedly cut and fixed, which is inconvenient for testing films on the same winding drum.

[0006] To achieve the above objectives, the present invention provides a testing device for testing the tensile strength of a thin film, comprising an operating table and a mounting bracket fixedly installed on the top of the operating table, and further comprising: At least one placement component is provided on the mounting frame for placing a take-up drum wrapped with film; The lifting frame is slidably mounted on the mounting bracket. The lifting unit, mounted on the mounting frame, is used to drive the lifting frame to move vertically. At least one clamping assembly, each clamping assembly including two clamping units arranged vertically in sequence for clamping both ends of the film to be tested; At least one detection unit is disposed on the lifting frame for driving the clamping unit located above to move upward and detecting the tension force on the film; At least one force-applying component is provided on the operating table for applying a downward pulling force to the clamping unit located below.

[0007] Optionally, the clamping unit includes a first clamping plate and a second clamping plate. At least two threaded posts are fixedly connected to the first clamping plate. The threaded posts penetrate the second clamping plate. Nuts are sleeved on the outside of the threaded posts on the side of the second clamping plate away from the first clamping plate. At least one first iron plate is fixedly connected to the side of the first clamping plate away from the second clamping plate.

[0008] Optionally, the detection unit includes a first mounting base disposed below the lifting frame, a plurality of force sensors are fixedly connected to the lifting frame, and the detection end of the force sensors is fixedly connected to the first mounting base. A first iron plate on the clamping unit located above passes through the first mounting base, and a first electromagnet adapted to the first iron plate is fixedly connected to the first mounting base.

[0009] Optionally, the force-applying component includes a second mounting base disposed below the first mounting base, a first iron plate on the clamping unit located below passes through the second mounting base, and a second electromagnet adapted to the first iron plate is fixedly connected to the second mounting base. A first slide rail and a second slide rail are slidably connected to both sides of the second mounting base, the first slide rail is fixedly connected to the operating table, and a pressure adjustment structure for applying pressure to the second slide rail is installed on the operating table.

[0010] Optionally, the pressure adjustment structure includes a pressing plate disposed on the side of the second slide rail away from the first slide rail, a plurality of first guide posts passing through the pressing plate, and the first guide posts being fixedly connected to the second slide rail. A movable plate is provided on the side of the pressing plate away from the second slide rail, and an elastic element adapted to the pressing plate is installed on the movable plate. A driving element for driving the movable plate to move toward the second slide rail is installed on the operating table.

[0011] Optionally, the driving component includes a rotating column rotatably mounted on the operating table and a first servo motor fixedly mounted on the operating table. The output end of the first servo motor is fixedly connected to the bottom end of the rotating column. Several fixed columns are provided above the operating table, and the number of fixed columns and movable plates is the same. The two ends of the fixed columns are fixedly connected to the rotating columns through connecting plates. Several rectangular rings arranged vertically are slidably sleeved on the outside of the fixed columns. The rectangular rings are fixedly connected to the corresponding movable plates, and the uppermost rectangular ring and the lowermost rectangular ring are in contact with the corresponding connecting plates.

[0012] Optionally, the elastic element includes several second guide posts fixedly installed on the pressing plate. The second guide posts penetrate the movable plate, and a fixed plate is fixedly connected to the end of the second guide post away from the pressing plate. A compression spring is sleeved on the outside of the second guide post, and the two ends of the compression spring are fixedly connected to the pressing plate and the movable plate, respectively.

[0013] Optionally, the lifting unit includes a second servo motor fixedly mounted on the mounting frame. The output end of the second servo motor and the lifting frame are connected by a ball screw. The second servo motor drives the ball screw to rotate, thereby realizing the vertical movement of the lifting frame.

[0014] Optionally, the placement assembly includes a take-up frame fixedly mounted on the mounting frame, the take-up frame having two mounting holes adapted to the ends of the take-up drum, a retainer for positioning the take-up drum mounted on the take-up frame, and a presser for applying pressure to the film mounted on the take-up frame.

[0015] Optionally, the fixture includes first magnet blocks symmetrically arranged on both sides of the winding frame. The bottom of the first magnet block is fixedly connected to an insert plate, which is used to pass through a mounting plate rotatably connected to the end of the winding drum. At least one second iron plate is sleeved on the outside of the insert plate. The second iron plate is fixedly connected to the winding frame, and the bottom of the first magnet block and the top of the corresponding second iron plate are in contact.

[0016] Optionally, the presser includes a rotating frame disposed above the take-up frame, a pressing roller for pressing the film is fixedly connected to the rotating frame, the end of the rotating frame away from the pressing roller is rotatably connected to the take-up frame via a rotating shaft, a torsion spring is sleeved on the outside of the rotating shaft, and the two torsion arms of the torsion spring abut against the rotating frame and the take-up frame respectively.

[0017] Optionally, a guide frame is fixedly connected to the winding frame, and several first guide rollers for guiding the film are rotatably connected to the guide frame. Several fixed frames that cooperate with the guide frame are fixedly connected to the top of the lifting frame. The number of fixed frames and guide frames is the same. Several adjusting rollers arranged in sequence are provided above the guide frame. Connecting seats are rotatably connected to both ends of the adjusting rollers. Disassembly and assembly devices that are adapted to the guide frame and fixed frames are installed on the connecting seats respectively. Several second guide rollers for guiding the film are rotatably connected to the lifting frame. The film passes through the first guide rollers and the adjusting rollers in a staggered manner, and finally the film is guided to the clamping unit by the second guide rollers.

[0018] Optionally, the disassembly and assembly device includes iron pipes that are slidably sleeved on both ends of the connecting seat. The upper iron pipe is fixedly connected to the fixing frame, and the lower iron pipe is fixedly connected to the guide frame. An insert is inserted through the iron pipe and passes through the connecting seat. A second magnet block that is magnetically attracted to the iron pipe is fixedly connected to the end of the insert.

[0019] The beneficial effects of this invention are as follows: The operator places a film-wound roll onto the mounting frame using a placement assembly. The operator then moves the film, clamping and fixing the portion of the film to be inspected using two adjacent clamping units. A lifting unit drives the lifting frame and inspection unit upwards, and a force-applying assembly applies a downward pulling force to the film. The inspection unit detects the pulling force on the film, recording the pulling force experienced by the film during its stretching to breakage and the height of the clamping unit at the top when the film breaks. By measuring the distance between two adjacent clamping units, the length of the film at breakage is recorded. When other locations on the film need to be inspected, the lifting unit drives the lifting frame and inspection unit downwards to their initial height, and the operator then moves the film from its original position... The clamping unit moves downwards, and the operator drives the clamping unit, which was originally located below, to move upwards. The clamping unit at the top then clamps the top of the film that needs to be inspected again. The lifting unit then drives the lifting frame and the inspection unit upwards again to inspect the film. This eliminates the need for repeated cutting of the film. Each time the film is inspected, only the top of the next section of the film to be inspected needs to be fixed, reducing the number of times the film needs to be fixed and improving inspection efficiency. Multiple positions on the same roll of film can be inspected, facilitating the inspection of the quality uniformity of the same roll of film and improving convenience. It can determine whether the tensile strength and elongation at break of the film meet the standards, thus making it easier to determine whether the products in the same batch meet the qualification standards. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this 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 for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the thin film movement trajectory according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the winding rack according to an embodiment of the present invention; Figure 4 This is a structural schematic diagram showing the positional states of the guide frame and the fixing frame in an embodiment of the present invention; Figure 5 This is a schematic diagram of the disassembly structure of the disassembly device according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the lifting frame according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the disassembled clamping unit according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the operating console according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of the second mounting base according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the disassembled elastic element according to an embodiment of the present invention; Figure 11 For the present invention Figure 1 A magnified structural diagram of region A in the middle.

[0022] The diagram is marked as follows: 1. Control panel; 2. Mounting bracket; 3. Lifting frame; 4. First mounting base; 5. Force sensor; 6. Second mounting base; 7. First slide rail; 8. Second slide rail; 9. First clamping plate; 10. Second clamping plate; 11. First iron plate; 12. First electromagnet; 13. Threaded post; 14. Nut; 15. Pressing plate; 16. First guide post; 17. Movable plate; 18. Rectangular ring; 19. Rotating column; 20. First servo motor; 21. Second guide post; 22. Compression spring; 23. Fixed plate; 24. Ball screw; 25. 26. Servo motor; 27. Take-up frame; 28. Guide frame; 29. ​​First guide roller; 30. Fixing frame; 31. Adjusting roller; 32. Second guide roller; 33. Insert plate; 34. Second iron plate; 35. First magnet block; 36. Rotating frame; 37. Pressing roller; 38. Torsion spring; 39. Connecting seat; 40. Iron pipe; 41. Insert block; 42. Second magnet block; 43. Fixing column; 44. Mounting hole; 45. Rotating shaft; 46. Mounting plate; 47. Second electromagnet; 601. Connecting plate; 602. Take-up drum; 603. Film. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0024] Example 1, by Figure 1 , Figure 2 and Figure 6 The present invention includes an operating table 1 and a mounting bracket 2 fixedly installed on the top of the operating table 1, and further includes: At least one placement component is provided on the mounting frame 2 for placing a take-up spool 601 wrapped with film 602; The lifting frame 3 is slidably mounted on the mounting frame 2; The lifting unit is mounted on the mounting frame 2 and is used to drive the lifting frame 3 to move vertically. At least one clamping assembly, each clamping assembly including two clamping units arranged vertically in sequence for clamping both ends of the film 602 to be tested; At least one detection unit is provided on the lifting frame 3 for driving the clamping unit located above to move upward and detecting the tension on the film 602; At least one force-applying component is disposed on the operating table 1 for applying a downward pulling force to the clamping unit located below; The operator places the take-up roll 601, wrapped with film 602, onto the mounting frame 2 using the placement assembly. The operator then moves the film 602, clamping and fixing the portion of the film 602 to be inspected using two adjacent clamping units. The lifting unit drives the lifting frame 3 and the inspection unit upwards, applying a downward pulling force to the film 602 using the force application assembly. The inspection unit detects the pulling force on the film 602, recording the pulling force experienced by the film 602 during its stretching to breakage and the height of the clamping unit at the top when the film 602 breaks. The distance between two adjacent clamping units is measured, and the length of the film 602 at breakage is recorded. When other locations on the film 602 need to be inspected, the lifting unit drives the lifting frame 3 and the inspection unit downwards to their initial height. The operator then moves the film 601 from its original position... The clamping unit moves downwards, and the operator drives the clamping unit, which was originally located below, to move upwards. The clamping unit at the top clamps the top of the film 602 that needs to be inspected again. Then, the lifting unit drives the lifting frame 3 and the inspection unit to move upwards again, realizing the inspection of the film 602. There is no need to repeatedly cut the film 602. Each time the film 602 is inspected, only the top of the next part of the film 602 to be inspected needs to be fixed, reducing the number of times the film 602 needs to be fixed and improving the inspection efficiency. Multiple positions on the same roll of film 602 can be inspected, which is convenient for inspecting the quality uniformity of the same roll of film 602. It can determine whether the tensile strength and elongation at break of the film 602 meet the standards, and thus facilitate the determination of whether the products in the same batch meet the qualification standards.

[0025] Example 2, based on Example 1, is... Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10The clamping unit includes a first clamping plate 9 and a second clamping plate 10. At least two threaded posts 13 are fixedly connected to the first clamping plate 9, penetrating the second clamping plate 10. Nuts 14 are fitted onto the outside of the threaded posts 13, located on the side of the second clamping plate 10 away from the first clamping plate 9. At least one first iron plate 11 is fixedly connected to the side of the first clamping plate 9 away from the second clamping plate 10. The detection unit includes a first mounting base 4 located below the lifting frame 3. Several force sensors 5 are fixedly connected to the lifting frame 3, and the detection ends of the force sensors 5 are fixedly connected to the first mounting base 4. The first... The iron plate 11 passes through the first mounting base 4, and a first electromagnet 12 adapted to the first iron plate 11 is fixedly connected to the first mounting base 4. The force application component includes a second mounting base 6 disposed below the first mounting base 4. The first iron plate 11 on the clamping unit located below passes through the second mounting base 6, and a second electromagnet 46 adapted to the first iron plate 11 is fixedly connected to the second mounting base 6. A first slide rail 7 and a second slide rail 8 are slidably connected to both sides of the second mounting base 6. The first slide rail 7 and the operating table 1 are fixedly connected. A pressure adjustment structure for applying pressure to the second slide rail 8 is installed on the operating table 1. The operator drives the membrane 602 to pass between the second clamping plate 10 and the first clamping plate 9. The operator drives the nut 14 to rotate, and the nut 14 pushes the second clamping plate 10 towards the first clamping plate 9. Finally, the first clamping plate 9 and the second clamping plate 10 clamp the membrane 602. The operator drives the first clamping plate 9 to move so that the first iron plate 11 passes through the first mounting base 4 or the second mounting base 6. The first electromagnet 12 and the second electromagnet 46 are energized, and the first iron plate 11 is magnetically attracted to the corresponding first electromagnet 12 or second electromagnet 46, thus fixing the clamping unit relative to the first mounting base 4 or the second mounting base 6. The first electromagnet 12 and the second electromagnet 46 are de-energized, and the operator drives the first clamping plate 9 to move in the opposite direction. The clamping unit can be removed by making the first iron plate 11 no longer magnetically attracted to the corresponding first electromagnet 12 or second electromagnet 46, and by making the first iron plate 11 detach from the first mounting base 4 or the second mounting base 6. The operator can then install the clamping unit that was originally located above on the second mounting base 6. The clamping unit that was originally located above directly pulls the diaphragm 602 between the detection unit and the force application component, reducing the number of times the diaphragm 602 is clamped and fixed. When the clamping unit is installed on the second mounting base 6, the pressure adjustment structure does not apply a horizontal force to the second slide rail 8. The second mounting base 6 is slidably installed between the first slide rail 7 and the second slide rail 8. At this time, the diaphragm 602 located between the two clamping units is straightened.

[0026] Example 3, based on Example 2, by Figure 1 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 The pressure adjustment structure includes a pressing plate 15 disposed on the side of the second slide rail 8 away from the first slide rail 7. Several first guide posts 16 pass through the pressing plate 15, and the first guide posts 16 are fixedly connected to the second slide rail 8. A movable plate 17 is disposed on the side of the pressing plate 15 away from the second slide rail 8. An elastic element adapted to the pressing plate 15 is mounted on the movable plate 17. A driving component for driving the movable plate 17 to move towards the second slide rail 8 is mounted on the operating table 1. The driving component includes a rotating column 19 rotatably mounted on the operating table 1 and a first servo motor 20 fixedly mounted on the operating table 1. The output end of the first servo motor 20 is fixedly connected to the bottom end of the rotating column 19. Several fixed posts 42 are disposed above the operating table 1, and the number of fixed posts 42 is the same as the number of movable plates 17. The two ends of the fixed posts 42 are fixedly connected to the rotating columns 19 via connecting plates 47, respectively. The sliding sleeve is provided with several rectangular rings 18 arranged vertically in sequence. The rectangular rings 18 are fixedly connected to the corresponding movable plates 17. The uppermost rectangular ring 18 and the lowermost rectangular ring 18 are in contact with the corresponding connecting plates 47. The elastic element includes several second guide posts 21 fixedly installed on the pressing plate 15. The second guide posts 21 pass through the movable plates 17. The end of the second guide post 21 away from the pressing plate 15 is fixedly connected to a fixed plate 23. The outside of the second guide post 21 is fitted with a compression spring 22. The two ends of the compression spring 22 are fixedly connected to the pressing plate 15 and the movable plate 17 respectively. The lifting unit includes a second servo motor 25 fixedly installed on the mounting frame 2. The output end of the second servo motor 25 and the lifting frame 3 are connected through a ball screw 24. The second servo motor 25 drives the ball screw 24 to rotate, thereby realizing the vertical movement of the lifting frame 3. When testing the film 602, the first servo motor 20 drives the rotating column 19 to rotate. The rotating column 19 drives the fixed column 42 to slide within the rectangular ring 18 via the connecting plate 47. The fixed column 42 pushes the rectangular ring 18 and the movable plate 17 to translate, so that the movable plate 17 slides relative to the second guide column 21 and the pressing plate 15. The compression spring 22 is in a compressed state, and the pressing plate 15 is in close contact with the second slide rail 8. The compression spring 22 applies pressure to the pressing plate 15 and the second slide rail 8, thereby controlling the resistance to the upward movement of the second mounting base 6. The second servo motor 25 drives the ball screw 24 to rotate, and the ball screw 24 drives the lifting... The lifting frame 3 slides relative to the mounting frame 2. The lifting frame 3 drives the force sensor 5 and the first mounting seat 4 to move upward. The first mounting seat 4 pulls the second mounting seat 6 to move upward synchronously through the diaphragm 602. By continuously increasing the pressure applied to the second slide rail 8, the tension on the diaphragm 602 is changed until the diaphragm 602 breaks due to excessive resistance from the upward movement of the second mounting seat 6. The maximum value detected by the force sensor 5 and the height of the first mounting seat 4 are recorded at this time. By calculating the distance between the two clamping units, it can be determined whether the tensile strength and elongation at break of the diaphragm 602 meet the standards, and thus determine whether the products in the same batch meet the qualified standards.

[0027] Example 4, based on Example 1, is... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 11The mounting assembly includes a take-up frame 26 fixedly mounted on a mounting bracket 2. The take-up frame 26 has two mounting holes 43 that mate with the ends of the take-up drum 601. A fixture for positioning the take-up drum 601 is mounted on the take-up frame 26. A presser for applying pressure to the film 602 is also mounted on the take-up frame 26. The fixture includes first magnet blocks 34 symmetrically arranged on both sides of the take-up frame 26. An insert plate 32 is fixedly connected to the bottom of each first magnet block 34. The insert plate 32 passes through a mounting disc 45 rotatably connected to the end of the take-up drum 601. The insert plate 32 is fitted with a... The second iron plate 33 is missing. The second iron plate 33 is fixedly connected to the winding frame 26, and the bottom of the first magnet block 34 is in contact with the top of the corresponding second iron plate 33. The presser includes a rotating frame 35 disposed above the winding frame 26. A pressing roller 36 for pressing the film 602 is fixedly connected to the rotating frame 35. The end of the rotating frame 35 away from the pressing roller 36 is rotatably connected to the winding frame 26 through a rotating shaft 44. A torsion spring 37 is sleeved on the outside of the rotating shaft 44, and the two torsion arms of the torsion spring 37 abut against the rotating frame 35 and the winding frame 26 respectively. The winding frame 26 A guide frame 27 is fixedly connected to the top of the lifting frame 3. Several first guide rollers 28 for guiding the film 602 are rotatably connected to the guide frame 27. Several fixed frames 29 that cooperate with the guide frame 27 are fixedly connected to the top of the lifting frame 3. The number of fixed frames 29 and guide frames 27 is the same. Several adjusting rollers 30 arranged sequentially are provided above the guide frame 27. Connecting seats 38 are rotatably connected to both ends of the adjusting rollers 30. Disassembly and assembly devices adapted to the guide frame 27 and fixed frames 29 are installed on the connecting seats 38. Several rollers for guiding the film 602 are rotatably connected to the lifting frame 3. The second guide roller 31 guides the film 602, which passes through the first guide roller 28 from below and the adjusting roller 30 from above in a staggered manner. Finally, the film 602 is guided to the clamping unit by the second guide roller 31. The disassembly and assembly device includes iron pipes 39 that are slidably sleeved at both ends of the connecting seat 38. The upper iron pipe 39 is fixedly connected to the fixing frame 29, and the lower iron pipe 39 is fixedly connected to the guide frame 27. An insert 40 passes through the iron pipe 39 and passes through the connecting seat 38. The end of the insert 40 is fixedly connected to a second magnet 41 that is magnetically attracted to the iron pipe 39. The operator rotates and installs the two mounting discs 45 onto both ends of the take-up drum 601. Then, the operator drives the take-up drum 601, with the film 602 wound around it, to move it below the take-up frame 26. Both ends of the take-up drum 601 slide into the two mounting holes 43. The operator then drives the first magnet 34 and the insert plate 32 to move, so that the insert plate 32 passes through the mounting disc 45 and the second iron plate 33. The insert plate 32 limits the position of the mounting disc 45, preventing the take-up drum 601 from wobbling relative to the take-up frame 26. The first magnet 34 is magnetically attracted to the uppermost second iron plate 33, and the film 602 abuts against the pressing roller 36. The torsion spring 37 deforms, causing the torsion... Spring 37 applies pressure to the rotating frame 35 so that the pressing roller 36 presses against the film 602, preventing the film 602 from loosening and the take-up drum 601 from rotating due to non-human factors. The film 602 passes alternately from below the first guide roller 28 and above the adjusting roller 30, and finally the film 602 is guided to the clamping unit by the second guide roller 31. According to the length of film 602 pulled out from the take-up drum 601 for each test, the operator drives the second magnet block 41 and the insert block 40 located below to move independently. The second magnet block 41 is no longer magnetically attracted to the iron pipe 39, so that the insert block 40 is disengaged from the iron pipe 39 and the connecting seat 38. At this time, the fixing frame 2 When the 9th frame moves upward, the fixed frame 29 can drive the corresponding adjusting roller 30 and connecting seat 38 to move upward synchronously. The bottom end of the connecting seat 38 is pulled out from the corresponding iron pipe 39. When the operator drives the second magnet 41 and the insert 40 located above to move separately, the second magnet 41 is no longer magnetically attracted to the iron pipe 39, so that the insert 40 is disengaged from the iron pipe 39 and the connecting seat 38. At this time, when the fixed frame 29 moves upward, the fixed frame 29 drives the iron pipe 39 located above to disengage from the connecting seat 38. The height of the corresponding adjusting roller 30 remains unchanged. After the fixing relationship between the connecting seat 38 and the guide frame 27 and the fixed frame 29 is adjusted, the lifting frame 3 and When the fixed frame 29 moves upward, it drives the corresponding adjusting roller 30 to move upward, increasing the distance between the adjusting roller 30 and the first guide roller 28. The adjusting roller 30 can then support the film 602 to move, and the film 602 pulls the winding drum 601 to rotate, thus removing the film 602 from the winding drum 601. When the lifting frame 3 descends to the initial height, the film 602 located between the adjusting roller 30 and the fixed frame 29 is in a loose state. The operator pulls the clamping unit located above to move downward, and the clamping unit located above can then pull the next section of film 602 to be tested down to the preset position, making it convenient for the operator to pull the film 602 for testing.

[0028] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

Claims

1. A testing device for testing the tensile strength of a thin film, comprising an operating table (1) and a mounting frame (2) fixedly installed on the top of the operating table (1), characterized in that, Also includes: At least one placement component is provided on the mounting frame (2) for placing a take-up spool (601) wrapped with a film (602). The lifting frame (3) is slidably mounted on the mounting frame (2); The lifting unit is mounted on the mounting frame (2) and is used to drive the lifting frame (3) to move vertically. At least one clamping assembly, each clamping assembly including two clamping units arranged vertically in sequence for clamping both ends of the part to be tested of the film (602); At least one detection unit is provided on the lifting frame (3) for driving the clamping unit located above to move upward and detecting the tension on the film (602); At least one force-applying component is provided on the operating table (1) for applying a downward pulling force to the clamping unit located below.

2. The testing device for testing the tensile strength of a thin film according to claim 1, characterized in that, The clamping unit includes a first clamping plate (9) and a second clamping plate (10). At least two threaded posts (13) are fixedly connected to the first clamping plate (9). The threaded posts (13) penetrate the second clamping plate (10). A nut (14) is sleeved on the outside of the threaded posts (13) on the side of the second clamping plate (10) away from the first clamping plate (9). At least one first iron plate (11) is fixedly connected to the side of the first clamping plate (9) away from the second clamping plate (10).

3. The testing device for testing the tensile strength of a thin film according to claim 2, characterized in that, The detection unit includes a first mounting base (4) located below the lifting frame (3). Several force sensors (5) are fixedly connected to the lifting frame (3), and the detection end of the force sensor (5) is fixedly connected to the first mounting base (4). A first iron plate (11) on the clamping unit located above passes through the first mounting base (4), and a first electromagnet (12) adapted to the first iron plate (11) is fixedly connected to the first mounting base (4).

4. The testing device for testing the tensile strength of a thin film according to claim 3, characterized in that, The force application component includes a second mounting base (6) located below the first mounting base (4). A first iron plate (11) on the clamping unit located below passes through the second mounting base (6). A second electromagnet (46) adapted to the first iron plate (11) is fixedly connected to the second mounting base (6). A first slide rail (7) and a second slide rail (8) are slidably connected to both sides of the second mounting base (6). The first slide rail (7) and the operating table (1) are fixedly connected. A pressure adjustment structure for applying pressure to the second slide rail (8) is installed on the operating table (1).

5. The testing device for testing the tensile strength of a thin film according to claim 4, characterized in that, The pressure adjustment structure includes a pressing plate (15) disposed on the side of the second slide rail (8) away from the first slide rail (7). Several first guide posts (16) are passed through the pressing plate (15), and the first guide posts (16) are fixedly connected to the second slide rail (8). A movable plate (17) is provided on the side of the pressing plate (15) away from the second slide rail (8). An elastic element adapted to the pressing plate (15) is installed on the movable plate (17). A driving element for driving the movable plate (17) to move toward the second slide rail (8) is installed on the operating table (1).

6. The testing device for testing the tensile strength of a thin film according to claim 5, characterized in that, The driving component includes a rotating column (19) rotatably mounted on the operating table (1) and a first servo motor (20) fixedly mounted on the operating table (1). The output end of the first servo motor (20) is fixedly connected to the bottom end of the rotating column (19). Several fixed columns (42) are provided above the operating table (1), and the number of fixed columns (42) and movable plates (17) is the same. The two ends of the fixed columns (42) are fixedly connected to the rotating column (19) through connecting plates (47) respectively. Several rectangular rings (18) arranged vertically are slidably sleeved on the outside of the fixed columns (42). The rectangular rings (18) are fixedly connected to the corresponding movable plates (17), and the uppermost rectangular ring (18) and the lowermost rectangular ring (18) are in contact with the corresponding connecting plates (47) respectively.

7. The testing device for testing the tensile strength of a thin film according to claim 5, characterized in that, The elastic element includes several second guide posts (21) fixedly installed on the pressing plate (15). The second guide posts (21) penetrate the movable plate (17). A fixed plate (23) is fixedly connected to one end of the second guide post (21) away from the pressing plate (15). A compression spring (22) is sleeved on the outside of the second guide post (21). The two ends of the compression spring (22) are fixedly connected to the pressing plate (15) and the movable plate (17) respectively.

8. The testing device for testing the tensile strength of a thin film according to claim 1, characterized in that, The lifting unit includes a second servo motor (25) fixedly installed on the mounting frame (2). The output end of the second servo motor (25) and the lifting frame (3) are connected by a ball screw (24). The second servo motor (25) drives the ball screw (24) to rotate, thereby realizing the vertical movement of the lifting frame (3).

9. The testing device for testing the tensile strength of a thin film according to claim 1, characterized in that, The placement assembly includes a take-up frame (26) fixedly mounted on the mounting frame (2), the take-up frame (26) having two mounting holes (43) adapted to the ends of the take-up drum (601), a fixture for positioning the take-up drum (601) mounted on the take-up frame (26), and a presser for applying pressure to the film (602) mounted on the take-up frame (26).

10. The testing device for testing the tensile strength of a thin film according to claim 9, characterized in that, The fixture includes first magnet blocks (34) symmetrically arranged on both sides of the winding frame (26). The bottom of the first magnet block (34) is fixedly connected to a plate (32). The plate (32) is used to pass through the mounting plate (45) which is rotatably connected to the end of the winding drum (601). At least one second iron plate (33) is sleeved on the outside of the plate (32). The second iron plate (33) is fixedly connected to the winding frame (26), and the bottom of the first magnet block (34) and the top of the corresponding second iron plate (33) are in contact.

11. The testing device for testing the tensile strength of a thin film according to claim 9, characterized in that, The presser includes a rotating frame (35) disposed above the take-up frame (26). A pressing roller (36) for pressing the film (602) is fixedly connected to the rotating frame (35). The end of the rotating frame (35) away from the pressing roller (36) and the take-up frame (26) are rotatably connected by a rotating shaft (44). A torsion spring (37) is sleeved on the outside of the rotating shaft (44), and the two torsion arms of the torsion spring (37) abut against the rotating frame (35) and the take-up frame (26) respectively.

12. The testing device for testing the tensile strength of a thin film according to claim 9, characterized in that, The winding frame (26) is fixedly connected to a guide frame (27), and the guide frame (27) is rotatably connected to a number of first guide rollers (28) for guiding the film (602). The top of the lifting frame (3) is fixedly connected to a number of fixed frames (29) that cooperate with the guide frame (27). The number of fixed frames (29) and guide frames (27) is the same. Above the guide frame (27) are a number of adjusting rollers (30) arranged in sequence. The two ends of the adjusting rollers (30) are rotatably connected to connecting seats (38). The connecting seats (38) are equipped with disassembly and assembly devices that are adapted to the guide frame (27) and the fixed frames (29) respectively. The lifting frame (3) is rotatably connected to a number of second guide rollers (31) for guiding the film (602). The film (602) passes through the first guide rollers (28) and the adjusting rollers (30) in sequence, and finally the film (602) is guided to the clamping unit by the second guide rollers (31).

13. The testing device for testing the tensile strength of a thin film according to claim 12, characterized in that, The disassembly and assembly device includes iron pipes (39) that are slidably sleeved on both ends of the connecting seat (38). The upper iron pipe (39) is fixedly connected to the fixing frame (29), and the lower iron pipe (39) is fixedly connected to the guide frame (27). An insert (40) passes through the iron pipe (39) and passes through the connecting seat (38). The end of the insert (40) is fixedly connected to a second magnet (41) that is magnetically attracted to the iron pipe (39).

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