Tension testing machine for composite film

Abstract

The invention relates to a composite film tension tester, in particular to the field of tension test.The composite film tension tester comprises a tension tester body and a lifting assembly, the lifting assembly is slidably connected to the tension tester body, a pulling clamp is arranged at the bottom of the lifting assembly, and a fixing clamp is arranged on the side, close to the pulling clamp, of the tension tester body; the fixing clamp is provided with a connecting frame, a connecting rack is arranged at the end of the connecting frame, a rotating frame is rotationally connected to the fixing clamp, and a rotating gear is connected to the side, close to the fixing clamp, of the rotating frame. When a lower moving clamping plate moves leftwards, a connecting frame and a connecting rack can be driven to move leftwards, the connecting rack can drive a rotating frame to rotate through a rotating gear, then a rotating rod drives a first pasting piece to paste a composite film, and after testing, when the lower moving clamping plate moves rightwards, through cooperation of the connecting rack and the rotating gear, the composite film can be pasted through the first pasting piece; and then the composite film is brought out towards the front portion through the first pasting piece, and the composite film is taken down from the pulling clamp and the fixing clamp.

Description

Technical Field

[0001] The invention relates to the field of tensile testing, in particular to a composite film tensile testing machine. Background Art

[0002] The composite film is formed by bonding an upper film and a lower film, and there is high-strength adhesion between the upper film and the lower film. After the composite film is produced, in order to evaluate the tensile strength and tear resistance of the composite film, the composite film needs to be subjected to a tensile test.

[0003] Before using the tensile testing machine to test the composite film, first, people peel off one end of the upper film and the lower film of the composite film, and then people need to manually peel the upper film and the lower film from each other a little distance, and then fix the peeled end of the upper film of the composite film on the pulling fixture of the tensile testing machine, and fix the lower film of the composite film on the fixed fixture of the tensile testing machine, and clamp the upper and lower films of the composite film by pulling the fixture and the fixed fixture, and then the tensile testing machine can be used to control the pulling fixture to move upward, and the pulling fixture pulls the upper film upward, so that the upper and lower films can be stretched, and the upper and lower films can be stretched. The films will slowly peel off from each other during the stretching process, and the tensile testing machine can automatically test the tensile strength of the composite film. After the tensile test is completed, people need to manually open the pulling clamp to loosen the upper film, manually open the fixing clamp to loosen the lower film, and then remove the composite film from the pulling clamp and the fixing clamp. In this way, the steps for removing the composite film need to be divided into three steps: manually opening the pulling clamp, manually opening the fixing clamp, and manually removing the composite film. The steps are numerous and very troublesome. Therefore, a composite film tensile testing machine that automatically removes the upper and lower films from the pulling clamp and the fixing clamp is developed. Summary of the invention

[0004] The purpose of the present invention is to provide a composite film tensile testing machine which can automatically remove the upper film and the lower film from the pulling clamp and the fixing clamp, so as to overcome the disadvantages of the prior art that people need to manually open the pulling clamp and the fixing clamp to remove the upper film and the lower film.

[0005] The technical solution is: a composite film tensile testing machine, including a tensile testing machine body and a lifting component, the tensile testing machine body is slidably connected with the lifting component, a pulling clamp is provided at the bottom of the lifting component, a fixing clamp is provided on the side of the tensile testing machine body close to the pulling clamp, the fixing clamp is provided with a connecting frame, a connecting rack is provided at the end of the connecting frame, a rotating frame is rotatably connected to the fixing clamp, a rotating frame is connected to a rotating gear on the side close to the fixing clamp, the rotating gear and the connecting rack are meshed, a rotating rod is connected to the side of the rotating frame close to the rotating gear, and a rotating rod is also slidably connected to the side of the rotating frame away from the rotating gear, a transmission frame is connected to the side of the pulling clamp close to the rotating rod, the rotating rod close to the transmission frame is rotatably connected to the transmission frame, a first adhesive is provided on the side of the rotating rod away from the transmission frame, an extrusion block is connected to the top of the lifting component, a control switch is provided on the tensile testing machine body, the control switch and the extrusion block are extruded and matched, and the control switch and the tensile testing machine body are electrically connected through a control module.

[0006] As an improvement of the above scheme, the pulling clamp includes an upper electric slide rail, which is arranged at the bottom of the lifting assembly. The control switch and the upper electric slide rail are electrically connected through a control module. The rotating frame passes through the upper electric slide rail, and an upper fixed clamping plate is provided at the bottom of the upper electric slide rail. The upper electric slide rail is slidably connected to an upper movable clamping plate on one side close to the upper fixed clamping plate.

[0007] As an improvement of the above scheme, the fixing fixture includes a lower electric slide rail, which is arranged on the side of the tensile testing machine body close to the upper electric slide rail, the control switch and the lower electric slide rail are electrically connected through the control module, the lower electric slide rail and the rotating frame are rotatably connected, the side of the lower electric slide rail close to the upper fixed clamp plate is connected to the lower fixed clamp plate, the side of the lower electric slide rail close to the lower fixed clamp plate is slidably connected to the lower movable clamp plate, and the lower movable clamp plate is fixedly connected to the connecting frame.

[0008] As an improvement of the above solution, it also includes an ejection mechanism for ejecting the composite film, and the ejection mechanism is arranged on the tensile testing machine body.

[0009] The cam is provided with a plurality of guide wheels, and the guide wheels are provided with a plurality of guide wheels, and a plurality of guide wheels are provided on the guide wheels, and a plurality of guide wheels are provided on the guide wheels.

[0010] As an improvement of the above solution, the pushing assembly includes a squeezing plate and a fixing frame, the squeezing plate is arranged on the side of the upper movable clamping plate, the sliding rod is connected to the fixing frame, and the fixing frame and the squeezing plate are squeezed and matched.

[0011] As an improvement on the above scheme, the pulling assembly includes guide wheels, which are symmetrically arranged and rotatably connected to the lower fixed splint and the upper fixed splint respectively. The ejection frame is connected to connecting pull ropes which are symmetrically arranged front and back. The connecting pull ropes pass around the guide wheels, pass into the upper fixed splint and the lower fixed splint, and are fixedly connected to the adjacent connecting plates.

[0012] As an improvement of the above scheme, it also includes a support frame, which is arranged on one side of the tensile testing machine body close to the connecting frame. The support frame is rotatably connected to a rotating member symmetrically arranged along the longitudinal direction of the support frame, and a driving component for driving the rotating member to rotate is provided between the connecting frame and the support frame.

[0013] As an improvement of the above solution, the driving assembly includes a support member, which is arranged on a connecting frame, a movable frame is fixedly connected to the top of the support member, a connecting screw rod is rotatably connected to the rotating member, and the connecting screw rod and the movable frame are threadedly connected.

[0014] As an improvement of the above solution, it also includes a guide member and a collection frame. The guide member is arranged on the tensile testing machine body, and the collection frame is slidably connected to the guide member.

[0015] The beneficial effects are: 1. When the lower movable splint of the present invention moves to the left, it will drive the connecting frame and the connecting rack to move to the left, and the connecting rack will drive the rotating frame to rotate through the rotating gear, so that the rotating rod drives the first adhesive piece to stick the composite film. After the test, when the lower movable splint moves to the right, it can cooperate with the connecting rack and the rotating gear, so that the first adhesive piece brings the composite film to the front, so that the composite film is removed from the pulling clamp and the fixing clamp.

[0016] 2. The present invention can adhere the upper film and the lower film by setting a second adhesive component. After the upper movable clamping plate and the lower movable clamping plate move to the left to clamp the upper film and the lower film, the second adhesive component can clamp the composite film more firmly for tensile testing. After the test is completed, when the upper movable clamping plate moves to the right, the fixing frame is squeezed by the squeezing plate, so that the ejection frame pushes out the composite film so that the composite film can be removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 It is a three-dimensional structural schematic diagram of the tensile testing machine body, fixture bracket, detection assembly and other components of the present invention.

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the clamp bracket and the first clamp, the second clamp and other components of the present invention.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the connecting frame, rotating gear, rotating rod and other components of the present invention.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the connecting rack, the transmission frame, the first adhesive member and other components of the present invention.

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the ejection mechanism of the present invention.

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the pulling assembly of the present invention.

[0024] Figure 8 It is a schematic diagram of the three-dimensional structure of the sliding member, the ejection frame and the lower fixed clamping plate of the present invention.

[0025] Fig. 9 It is a schematic diagram of a partial three-dimensional structure of the pulling assembly of the present invention.

[0026] Fig.10 It is a schematic diagram of the three-dimensional structure of the connecting rope, connecting plate, connecting spring and other components of the present invention.

[0027] Fig.11It is a schematic diagram of the three-dimensional structure of the supporting frame, rotating member, connecting screw and other components of the present invention.

[0028] Fig.12 It is a schematic diagram of the three-dimensional structure of the driving component of the present invention.

[0029] Fig.13 It is a schematic diagram of the three-dimensional structure of the guide member and the collecting frame of the present invention.

[0030] Names of the reference numerals in the figure: 1. tensile testing machine body, 101. lifting assembly, 11. lower electric slide rail, 12. lower fixed clamping plate, 13. lower movable clamping plate, 14. upper movable clamping plate, 141. upper fixed clamping plate, 142. upper electric slide rail, 15. connecting frame, 16. rotating gear, 17. rotating rod, 18. rotating frame, 19. connecting rack, 110. transmission frame, 111. first adhesive member, 112. extrusion block, 1 13. Control switch, 2. Sliding rod, 21. Guide rod, 22. Reset spring, 23. Sliding member, 24. Ejection frame, 25. Extrusion plate, 26. Second adhesive member, 27. Fixed frame, 28. Connecting rope, 29. Connecting plate, 210. Connecting spring, 211. Guide wheel, 3. Support frame, 31. Rotating member, 32. Connecting screw rod, 33. Moving frame, 34. Support member, 5. Guide member, 51. Collection frame. DETAILED DESCRIPTION

[0031] The above scheme is further described below in conjunction with specific examples. It should be understood that these examples are used to illustrate the present application and are not limited to the scope of the present application. The implementation conditions adopted in the examples can be further adjusted according to the conditions of the specific manufacturer, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0032] Embodiment 1: A composite film tensile testing machine, such as Figure 1-Figure 5As shown, it includes a tensile testing machine body 1, a lifting component 101, a fixing fixture, a pulling fixture, a connecting frame 15, a rotating gear 16, a rotating rod 17, a rotating frame 18, a connecting rack 19, a transmission frame 110, a first adhesive member 111, an extrusion block 112 and a control switch 113. The upper left part of the tensile testing machine body 1 is slidably connected with the lifting component 101, and the bottom of the lifting component 101 is provided with a pulling fixture for clamping one end of the upper film. The left part of the tensile testing machine body 1 is connected with a fixing fixture for clamping one end of the lower film by bolts. The rear part of the fixing fixture is provided with a connecting frame 15, and the left part of the connecting frame 15 is welded A connecting rack 19 is connected, a rotating frame 18 is rotatably connected to the upper left part of the fixed fixture, a rotating gear 16 is welded at the lower part of the rotating frame 18, the rotating gear 16 is meshed with the connecting rack 19, a rotating rod 17 is fixedly connected to the lower part of the rotating frame 18, and a rotating rod 17 is also slidably connected to the rotating frame 18, a transmission frame 110 is fixedly connected to the lower left part of the pulling fixture, the upper rotating rod 17 and the transmission frame 110 are rotatably connected, the front of the rotating rod 17 is attached with a first adhesive piece 111 by Velcro, the top of the lifting assembly 101 is connected with an extrusion block 112, and a control switch is provided on the upper front side of the tensile testing machine body 1 113, the control switch 113 and the extrusion block 112 are extruded and matched, and the control switch 113 and the tensile testing machine body 1 are electrically connected through the control module; the pulling fixture includes an upper electric slide rail 142, an upper movable clamping plate 14 and an upper fixed clamping plate 141, the bottom of the lifting component 101 is connected to the upper electric slide rail 142, the control switch 113 and the upper electric slide rail 142 are electrically connected through the control module, the rotating frame 18 passes through the left part of the upper electric slide rail 142 upward, the upper fixed clamping plate 141 is fixedly connected to the left side of the bottom of the upper electric slide rail 142, and the upper movable clamping plate is slidably connected to the lower right part of the upper electric slide rail 142 14; the fixing fixture includes a lower electric slide rail 11, a lower fixed clamp plate 12 and a lower movable clamp plate 13. The left part of the tensile testing machine body 1 is connected to the lower electric slide rail 11 by bolts. The control switch 113 and the lower electric slide rail 11 are electrically connected through the control module. The upper left part of the lower electric slide rail 11 is rotatably connected to the rotating frame 18. The upper left part of the lower electric slide rail 11 is fixedly connected to the lower fixed clamp plate 12. The right part of the lower electric slide rail 11 is slidably connected to the lower movable clamp plate 13. One end of the lower membrane is clamped and fixed by the lower fixed clamp plate 12 and the lower movable clamp plate 13. The rear part of the lower movable clamp plate 13 is fixedly connected to the connecting frame 15.

[0033] When using the composite film tensile testing machine to perform a tensile test on the composite film, first peel off a length of the upper film and the lower film of the composite film, then place the lower film between the lower fixed clamping plate 12 and the lower movable clamping plate 13, and place the upper film between the upper movable clamping plate 14 and the upper fixed clamping plate 141. Then, people can control the lower movable clamping plate 13 and the upper movable clamping plate 14 to move to the left through the lower electric slide rail 11 and the upper electric slide rail 142 to clamp the composite film. When the lower movable clamping plate 13 moves to the left, it will drive the connecting frame 15 to move to the left. The connecting frame 15 moves to the left and drives the connecting rack 19 to move to the left. The connecting rack 19 moves to the left and drives the rotating gear 16 to rotate. The rotating gear 16 rotates to drive the rotating frame 18 to rotate, and the rotating frame 18 rotates to drive the rotating rod 17 to rotate 90 degrees counterclockwise, and the rotating rod 17 drives the first adhesive member 111 to rotate counterclockwise until the composite film is tightly attached, so that the upper first adhesive member 111 adheres to the left side of the upper film, and the lower first adhesive member 111 adheres to the left side of the lower film. When the pulling clamp clamps the upper film and the fixing clamp clamps the lower film, the composite film tensile testing machine controls the lifting assembly 101 to move upward, and the lifting assembly 101 moves upward to drive the pulling clamp and the extrusion block 112 to move upward. The pulling clamp moves upward to pull the upper film upward, so that the upper film and the lower film are slowly moved apart. Slow peeling, so that the tensile testing machine body 1 can record and analyze the data during the pulling process, so as to analyze the tensile data to complete the test, when the pulling fixture moves upward, it will also drive the transmission frame 110 to move upward, and the transmission frame 110 moves upward to drive the upper rotating rod 17 to move upward, so that the upper rotating rod 17 will drive the upper first adhesive member 111 to move upward together, when the top of the squeezing block 112 contacts the control switch 113, the control switch 113 is pressed, and the tensile testing machine body 1 will control the lifting assembly 101 to stop automatically. At the same time, the upper electric slide rail 142 controls the upper movable clamping plate 14 to move to the right and reset, and the lower electric slide The rail 11 will control the lower movable clamping plate 13 to move rightward and reset, and the lower movable clamping plate 13 will drive the connecting frame 15 and the connecting rack 19 to move rightward, and the connecting rack 19 moving rightward will drive the rotating gear 16 to rotate clockwise and reset, and the rotating gear 16 drives the rotating frame 18 to rotate clockwise and reset, and the rotating frame 18 rotates clockwise to drive the first adhesive member 111 to reset, and the first adhesive member 111 can rotate the upper film and the lower film out clockwise, so as to achieve the purpose of automatically removing the upper film and the lower film, and then, the pulling fixture can be controlled to move downward and reset through the tensile testing machine body 1, thereby driving the transmission frame 110 and the upper rotating rod 17 to move downward and reset.

[0034] Embodiment 2: Based on embodiment 1, Figure 6-Figure 10As shown, it also includes an ejection mechanism for ejecting the composite film, the ejection mechanism includes a sliding rod 2, a guide rod 21, a return spring 22, a sliding member 23, an ejection frame 24, a connecting plate 29, a connecting spring 210, a pushing assembly and a pulling assembly, a guide rod 21 is welded to the left front part of the tensile testing machine body 1, a sliding rod 2 is slidably connected to the guide rod 21, a return spring 22 is connected between the lower right part of the sliding rod 2 and the right part of the guide rod 21, a sliding member 23 is welded to the lower part of the sliding rod 2, and the lower part of the sliding rod 2 also slides The sliding member 23 is connected in a sliding manner, and the rear of the sliding member 23 is connected to an ejection frame 24. The lower ejection frame 24 is slidably connected to the upper part of the lower fixed clamping plate 12, and the upper ejection frame 24 is slidably connected to the upper fixed clamping plate 141. The upper fixed clamping plate 141 and the lower fixed clamping plate 12 are both slidably connected to a connecting plate 29. The right part of the connecting plate 29 is attached with a second adhesive member 26 for attaching the composite film through Velcro. The second adhesive member 26 is slidably connected to the ejection frame 24, and the upper fixed clamping plate 141 and the lower fixed clamping plate 12 are both slidably connected. Two connecting springs 210 are connected to the fixed splint 12, and the right end of the connecting spring 210 is connected to the left part of the connecting plate 29. A pushing component for pushing the sliding rod 2 is provided between the sliding rod 2 and the upper movable splint 14, and a pulling component for pulling the connecting plate 29 is provided between the left part of the lower fixed splint 12 and the left part of the upper fixed splint 141; the pushing component includes an extrusion plate 25 and a fixing frame 27, an extrusion plate 25 is welded to the right part of the upper movable splint 14, and a fixing frame 27 is connected to the upper right part of the sliding rod 2, and the fixing frame 27 and the extrusion plate 25 are welded to the right part of the upper movable splint 14. The pressure plate 25 is squeezed together, and the pulling assembly includes a connecting rope 28 and a guide wheel 211. The left part of the lower fixed splint 12 and the left part of the upper fixed splint 141 are both rotatably connected to the front and rear symmetrical guide wheels 211. The front and rear sides of the left part of the ejection frame 24 are connected to the connecting rope 28. The connecting rope 28 passes around the guide wheel 211 to the left, the upper connecting rope 28 passes into the upper fixed splint 141, and the lower connecting rope 28 passes into the lower fixed splint 12. The right part of the connecting rope 28 is fixedly connected to the adjacent connecting plate 29.

[0035] In the foregoing, after people pull the upper film and the lower film apart, they bring the upper film and the lower film close to the pulling clamp and the fixing clamp respectively, and keep the upper film and the lower film apart all the time, and wait for the lower movable clamp plate 13 and the upper movable clamp plate 14 to move to the left to clamp the upper film and the lower film, and then people can release the upper film and the lower film with their hands. In this way, people's hands are always pulling the upper film and the lower film, and their hands will be very tired. Therefore, a second adhesive member 26 is provided to adhere the upper film and the lower film, and people can stick the upper film to the right part of the upper second adhesive member 26, and stick the lower film to the lower second adhesive member 2 6, then, after the lower movable clamping plate 13 and the upper movable clamping plate 14 move to the left to clamp the upper film and the lower film, the lifting assembly 101 drives the pulling clamp to move upward, and the pulling clamp moves upward to pull the upper film upward, and the pulling clamp drives the ejection frame 24, the sliding member 23 and the extrusion plate 25 above to move upward. When the extrusion plate 25 moves to the left of the fixed frame 27, the pulling clamp stops moving, and then the upper movable clamping plate 14 and the lower movable clamping plate 13 are controlled to move to the right through the upper electric slide rail 142 and the lower electric slide rail 11, and the upper movable clamping plate 14 moves to the left. The right movement will drive the extrusion plate 25 to move right, and the right movement of the extrusion plate 25 will move the fixing frame 27 to the right. The right movement of the fixing frame 27 drives the sliding rod 2 to move right, and the return spring 22 is compressed. The right movement of the sliding rod 2 drives the sliding member 23 and the ejection frame 24 to move right. The right movement of the ejection frame 24 can push the composite film pasted on the second adhesive member 26 to the right. When the ejection frame 24 moves to the right, it drives the connecting plate 29 and the second adhesive member 26 to move to the left through the connecting rope 28, and the connecting spring 210 is compressed, so that the second adhesive member 26 is pushed out to the right. The patch 26 can be detached from the composite film, so that the composite film can be taken out through the first adhesive member 111. Afterwards, when the clamp is pulled downward, the upper ejector frame 24, the sliding member 23 and the extrusion plate 25 will be driven to move downward and reset. After the extrusion plate 25 and the fixed frame 27 are separated, under the action of the reset spring 22, the sliding rod 2 and the fixed frame 27 are driven to move to the left and reset, and the sliding member 23 and the ejector frame 24 are driven to move to the left and reset. Under the action of the connecting spring 210, the ejector frame 24, the connecting plate 29 and the second adhesive member 26 are driven to move to the right and reset.

[0036] like Figure 11-Figure 12 As shown, it also includes a support frame 3, a rotating member 31 and a driving assembly. The support frame 3 is welded to the left front part of the tensile testing machine body 1. The upper and lower sides of the support frame 3 are rotatably connected to the rotating member 31 for pushing the composite film forward away from the first adhesive member 111. A driving assembly for driving the rotating member 31 to rotate is provided between the left part of the connecting frame 15 and the support frame 3; the driving assembly includes a connecting screw 32, a movable frame 33 and a support member 34. The support member 34 is welded to the left part of the connecting frame 15, and the movable frame 33 is welded to the top of the support member 34. The left part of the rotating member 31 is rotatably connected to the connecting screw 32, and the connecting screw 32 and the movable frame 33 are threadedly connected.

[0037] like Fig.13 As shown, it also includes a guide member 5 and a collection frame 51. The upper left part of the tensile testing machine body 1 is connected to the guide member 5, and the collection frame 51 is slidably connected to the guide member 5.

[0038] When the connecting frame 15 moves left and right, it will drive the supporting member 34 and the moving frame 33 to move left and right. The moving frame 33 moves left and right and drives the connecting screw rod 32 to rotate. The rotation of the connecting screw rod 32 will drive the rotating member 31 to rotate. When the lower moving clamp 13 moves to the right to loosen the lower film, it will drive the connecting frame 15 to move to the right, and then the rotating rod 17 drives the first adhesive member 111 to drive the composite film forward. At the same time, the rotating member 31 rotates to automatically push the composite film forward, and the composite film will automatically fall into the collecting frame 51. If the composite film in the collecting frame 51 needs to be taken out, the collecting frame 51 can be moved forward and disengaged from the guide member 5. After the composite film in the collecting frame 51 is taken out, the collecting frame 51 can be moved and reset.

[0039] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, all equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A composite film tensile testing machine, characterized in that it includes A tensile testing machine body (1) and a lifting assembly (101) are provided. The tensile testing machine body (1) is slidably connected to the lifting assembly (101). A pulling clamp is provided at the bottom of the lifting assembly (101). A fixing clamp is provided on the side of the tensile testing machine body (1) close to the pulling clamp. The fixing clamp is provided with a connecting frame (15). A connecting rack (19) is provided at the end of the connecting frame (15). A rotating frame (18) is rotatably connected to the fixing clamp. A rotating frame (18) is connected to a rotating gear (16) on the side close to the fixing clamp. The rotating gear (16) and the connecting rack (19) are meshed. A rotating frame (18) is connected to a rotating rod (17) on the side close to the rotating gear (16). The side of the frame (18) away from the rotating gear (16) is also slidably connected to a rotating rod (17), the side of the pulling clamp close to the rotating rod (17) is connected to a transmission frame (110), the rotating rod (17) close to the transmission frame (110) and the transmission frame (110) are rotatably connected, the side of the rotating rod (17) away from the transmission frame (110) is provided with a first adhesive member (111), the top of the lifting component (101) is connected to an extrusion block (112), a control switch (113) is provided on the tensile testing machine body (1), the control switch (113) and the extrusion block (112) are extruded and matched, and the control switch (113) and the tensile testing machine body (1) are electrically connected through a control module.

2. A composite film tensile testing machine as claimed in claim 1, characterized in that: The pulling clamp comprises an upper electric slide rail (142), the upper electric slide rail (142) is arranged at the bottom of the lifting component (101), the control switch (113) and the upper electric slide rail (142) are electrically connected through a control module, the rotating frame (18) passes through the upper electric slide rail (142), an upper fixed clamping plate (141) is arranged at the bottom of the upper electric slide rail (142), and an upper movable clamping plate (14) is slidably connected to one side of the upper electric slide rail (142) close to the upper fixed clamping plate (141).

3. A composite film tensile testing machine as claimed in claim 2, characterized in that: The fixing fixture comprises a lower electric slide rail (11), the lower electric slide rail (11) being arranged on a side of the tensile testing machine body (1) close to the upper electric slide rail (142), the control switch (113) and the lower electric slide rail (11) being electrically connected via a control module, the lower electric slide rail (11) and the rotating frame (18) being rotatably connected, the side of the lower electric slide rail (11) close to the upper fixed clamping plate (141) being connected to the lower fixed clamping plate (12), the side of the lower electric slide rail (11) close to the lower fixed clamping plate (12) being slidably connected to the lower movable clamping plate (13), and the lower movable clamping plate (13) and the connecting frame (15) being fixedly connected.

4. A composite film tensile testing machine as claimed in claim 3, characterized in that: It also includes an ejection mechanism for ejecting the composite film, and the ejection mechanism is arranged on the tensile testing machine body (1).

5. A composite film tensile testing machine as claimed in claim 4, characterized in that: The ejection mechanism comprises a guide rod (21), the guide rod (21) being arranged on a side of the tensile testing machine body (1) close to a lower fixed clamping plate (12), a sliding rod (2) being slidably connected to the guide rod (21), a return spring (22) being connected between the sliding rod (2) and the guide rod (21), a sliding member (23) being arranged on a side of the sliding rod (2) close to the lower fixed clamping plate (12), a sliding member (23) being slidably connected to a side of the sliding rod (2) close to an upper fixed clamping plate (141), an ejection frame (24) being connected to a side of the sliding member (23) away from the sliding rod (2), the lower fixed clamping plate (12) and the ejection frame (24) being slidably connected to the lower portion thereof, and the upper fixed clamping plate (141) and the adjacent lower portion thereof being slidably connected to each other. The ejection frame (24) is slidably connected, a connecting plate (29) is slidably connected in the upper fixed clamp plate (141) and the lower fixed clamp plate (12), a second adhesive member (26) is provided on the connecting plate (29), the second adhesive member (26) and the ejection frame (24) are slidably connected, a plurality of connecting springs (210) are connected in the upper fixed clamp plate (141) and the lower fixed clamp plate (12), one end of the connecting spring (210) is connected to the connecting plate (29), a pushing component for pushing the sliding rod (2) is provided between the sliding rod (2) and the upper movable clamp plate (14), and a pulling component for pulling the connecting plate (29) is provided between the lower fixed clamp plate (12) and the upper fixed clamp plate (141).

6. A composite film tensile testing machine as claimed in claim 5, characterized in that: The pushing assembly comprises a pressing plate (25) and a fixing frame (27). The pressing plate (25) is arranged on the side of the upper movable clamping plate (14). The fixing frame (27) is connected to the sliding rod (2). The fixing frame (27) and the pressing plate (25) are pressed and matched.

7. A composite film tensile testing machine as claimed in claim 6, characterized in that: The pulling assembly comprises a guide wheel (211), wherein the guide wheels (211) are symmetrically arranged and are rotatably connected to the lower fixed clamping plate (12) and the upper fixed clamping plate (141), respectively; the ejection frame (24) is connected to a connecting rope (28) symmetrically arranged front and rear; the connecting rope (28) passes around the guide wheel (211), passes into the upper fixed clamping plate (141) and the lower fixed clamping plate (12), and the connecting rope (28) is fixedly connected to a connecting plate (29) adjacent thereto.

8. A composite film tensile testing machine as claimed in claim 7, characterized in that: The invention also comprises a support frame (3), the support frame (3) being arranged on a side of the tensile testing machine body (1) close to the connecting frame (15), the support frame (3) being rotatably connected to a rotating member (31) symmetrically arranged along the longitudinal direction of the support frame (3), and a driving assembly for driving the rotating member (31) to rotate is arranged between the connecting frame (15) and the support frame (3).

9. A composite film tensile testing machine as claimed in claim 8, characterized in that: The driving assembly comprises a support member (34), the support member (34) is arranged on a connecting frame (15), a moving frame (33) is fixedly connected to the top of the support member (34), a connecting screw rod (32) is rotatably connected to the rotating member (31), and the connecting screw rod (32) and the moving frame (33) are threadedly connected.

10. A composite film tensile testing machine as claimed in claim 9, characterized in that: It also includes a guide member (5) and a collection frame (51); the guide member (5) is arranged on the tensile testing machine body (1); and the collection frame (51) is slidably connected to the guide member (5).

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