A copper foil tensile property testing device and testing method

Abstract

This application discloses a copper foil tensile performance testing device and method, belonging to the field of copper foil performance testing. Its key technical features include: a worktable, a testing component for clamping both ends of the copper foil and performing tensile performance testing, and a smoothing component for flattening the copper foil before testing. The testing component includes a driving component and clamping components for clamping both ends of the copper foil; the driving component can drive the clamping components to move. The smoothing component includes a fixed frame, a flattening roller, and a smoothing driving mechanism. The fixed frame is fixed to the worktable, and the smoothing driving mechanism can drive the flattening roller to move from the middle of the copper foil to both sides. Using the technical solution of this application, the copper foil can be flattened while being clamped and stretched towards both ends for tensile performance testing, eliminating wrinkles or bends, ensuring test accuracy, and improving test reliability.

Description

Technical Field

[0001] This application relates to the field of copper foil performance testing, and in particular to a copper foil tensile performance testing device and testing method. Background Technology

[0002] Copper foil, as a metallic material with excellent electrical and thermal conductivity and processability, is widely used in many fields such as electronic circuits, lithium batteries, and flexible copper-clad laminates. Its tensile properties directly determine the structural stability, service life, and safety of the end product. In the production, processing, and application of copper foil, tensile property testing is an indispensable quality inspection link. Through accurate testing, qualified products can be screened out.

[0003] Many companies have developed copper foil tensile testing equipment, such as: (1) CN221612595U discloses a tensile testing device for lithium battery copper foil, the purpose of which is to test the tensile properties and stability of copper foil at different temperatures. The key design point is that the lithium battery copper foil is placed in a clamping mechanism, and then a pulling mechanism is used to perform a tensile test on the lithium battery copper foil. The internal temperature of the chamber is changed by a temperature control mechanism, thereby simulating the effect of temperature on the performance of copper foil under different usage environments.

[0004] (2) CN112504830B discloses a copper foil tensile testing device. Its key design feature is that the two ends of the copper foil test strip are fixed with flexible inflatable clamps to avoid damage to the fixed ends of the copper foil.

[0005] (3) CN114965060B discloses a pulling device, a testing device, an electrolytic copper foil production machine and its testing method, which is to perform various mechanical tests on the cut edge of the production machine.

[0006] For tensile testing, online testing, similar to CN114965060B, is the most accurate method. However, not all foil-making machines are compatible with online testing equipment. Therefore, sampling the copper foil and then performing tensile testing using a tensile testing device similar to CN217505457U remains the standard testing procedure. However, copper foil is prone to wrinkles or bends after sampling. Before testing (after sampling), the copper foil cannot be effectively smoothed out, leading to uneven stress distribution during tensile testing and often premature breakage at defects. This results in inaccurate test results, affecting accuracy and reliability, and increasing the risk of substandard products entering the market.

[0007] Therefore, it is necessary to design a copper foil tensile performance testing device that can flatten the copper foil while clamping it and stretching it to both ends for tensile performance testing, eliminating initial wrinkles or bends, ensuring test accuracy, and improving test reliability. Summary of the Invention

[0008] To overcome the shortcomings of the prior art, this application provides a copper foil tensile performance testing device and method, which can flatten the copper foil while clamping it and stretching it to both ends to perform tensile performance testing, eliminating initial wrinkles or bends and ensuring test accuracy.

[0009] The technical solution of this application is: A copper foil tensile property testing device, characterized in that it comprises: Workbench; A testing assembly, mounted on the worktable, is used to clamp both ends of a copper foil and perform tensile performance testing. The testing assembly includes a drive unit and clamping components for holding both ends of the copper foil; the drive unit can move the clamping components. A smoothing assembly, located in the center of the worktable, is used to smooth the copper foil before testing. The smoothing assembly includes a fixed frame, four smoothing rollers, and a smoothing drive mechanism. The fixed frame is fixed to the worktable. The four smoothing rollers are divided into two upper smoothing rollers and two lower smoothing rollers. The two upper smoothing rollers are symmetrically arranged above the copper foil, and the two lower smoothing rollers are symmetrically arranged below the copper foil, with each upper and lower smoothing roller corresponding one-to-one in the vertical direction. The smoothing drive mechanism can drive the two upper and two lower smoothing rollers to move synchronously from the center of the copper foil to the left and right sides, smoothing both the upper and lower surfaces of the copper foil simultaneously.

[0010] Furthermore, the leveling drive mechanism includes: a vertically arranged adjusting screw, a horizontally arranged rotating rod, a pair of bevel gears, an upper sliding seat, a lower sliding seat, multiple connecting rods, multiple wheel frames, an upper rack, a lower rack, gears, an upper horizontal guide plate, and a lower horizontal guide plate; A pair of bevel gears are fixed to the lower part of the adjusting screw and the rear part of the rotating rod, respectively. The two bevel gears mesh with each other to convert the horizontal rotation of the rotating rod into the vertical rotation of the adjusting screw. The upper sliding seat and the lower sliding seat are slidably connected to the fixed frame and can slide up and down along the fixed frame; the center of the lower sliding seat is provided with a threaded hole, which is engaged with the external thread of the adjusting screw, that is, when the adjusting screw is rotated, the lower sliding seat can move up and down along the fixed frame; The upper and lower racks are fixed to the rear of the upper and lower sliding seats respectively, with the tooth surfaces of the upper and lower racks facing each other; the gear is rotatably installed in the middle of the fixed frame and meshes with both the upper and lower racks simultaneously; that is, when the adjusting screw drives the lower sliding seat to move up and down, the lower rack moves down or up accordingly, driving the gear to rotate, and the gear then drives the upper rack to move in the opposite direction, thereby realizing the synchronous reverse movement of the upper and lower sliding seats; One upper wheel frame assembly is symmetrically arranged on the lower left and right sides of the upper sliding seat, and one lower wheel frame assembly is symmetrically arranged on the upper left and right sides of the lower sliding seat; each wheel frame assembly includes: a wheel frame and two connecting rods; a flattening roller is installed on each wheel frame, and the two ends of the connecting rods are respectively hinged to the sliding seat and the wheel frame. The upper and lower horizontal guide plates are fixedly mounted on the fixed frame. The upper part of the wheel frame of the upper wheel frame assembly is provided with a horizontal hole for the upper horizontal guide plate to pass through, and the lower part of the wheel frame of the lower wheel frame assembly is provided with a horizontal hole for the lower horizontal guide plate to pass through. The wheel frames are all horizontally slidably connected to the fixed frame.

[0011] Furthermore, the leveling drive mechanism also includes: an upper horizontal guide plate, a lower horizontal guide plate, and multiple guide wheels; The upper and lower horizontal guide plates are fixedly mounted on the fixed frame. The upper part of the wheel frame of the upper wheel frame assembly is provided with a horizontal hole for the upper horizontal guide plate to pass through, and the lower part of the wheel frame of the lower wheel frame assembly is provided with a horizontal hole for the lower horizontal guide plate to pass through. Each of the wheel frames is rotatably mounted with a guide wheel, which engages in rolling contact with a corresponding horizontal guide plate. Furthermore, the driving component includes a motor located on the left side of the worktable, a bidirectional lead screw located on the output shaft of the motor, and two sliding frames; both sliding frames are mounted on the bidirectional lead screw, and the rotation of the bidirectional lead screw can cause the two sliding frames to move closer to or further away from each other.

[0012] Furthermore, the bidirectional lead screw is provided with a bidirectional helical raceway; the two sliding frames are respectively slidably disposed on the left and right sides of the worktable, and each sliding frame is provided with a ball nut adapted to the bidirectional helical raceway.

[0013] Furthermore, the clamping member is disposed on the sliding frame; each clamping member includes: a clamping frame, a horizontal connecting mechanism, two tightening screws, and two clamping plates; The clamping frame is provided with threaded holes at both the upper and lower parts. Two tightening screws are threaded into the threaded holes at the upper and lower parts of the clamping frame. The ends of the two tightening screws are respectively fixedly connected to clamping plates, and the two clamping plates are set accordingly. The clamping frame and the sliding frame are connected by the horizontal connecting mechanism; The horizontal connecting mechanism is equipped with a tension sensor.

[0014] Furthermore, each of the clamping components also includes two buffer springs, one end of which is fixedly connected to the sliding frame, and the other end is free and not connected to the clamping frame.

[0015] Furthermore, the fixing frame is fixed to the upper rear side of the workbench, serving as the supporting skeleton for the entire smoothing assembly; the fixing frame is provided with vertically extending guide rails or grooves to guide the sliding seat and wheel frame to move in a predetermined direction.

[0016] Furthermore, the leveling drive mechanism includes: an adjusting screw, a rotating rod, a pair of bevel gears, an upper sliding seat, a lower sliding seat, multiple connecting rods, multiple wheel frames, an upper rack, a lower rack, and ordinary gears; The adjusting screw is mounted vertically in the middle of the worktable, and its surface is machined with external threads. The rotating rod is mounted on the upper front part of the workbench in a horizontal direction, and the front end of the rotating rod is the operating end for the operator to perform manual rotation. The pair of bevel gears are fixed to the lower part of the adjusting screw and the rear part of the rotating rod, respectively. The two bevel gears mesh with each other to convert the horizontal rotation of the rotating rod into the vertical rotation of the adjusting screw.

[0017] The upper and lower sliding seats are symmetrically slidably connected to the fixed frame, and both can slide up and down along the fixed frame. The lower sliding seat has a threaded hole at its center, which engages with the external thread of the adjusting screw to form a threaded transmission pair. When the adjusting screw rotates, the lower sliding seat is driven to move up and down along the fixed frame.

[0018] The upper rack is fixed to the rear of the upper sliding seat, and the lower rack is fixed to the rear of the lower sliding seat, with the tooth surfaces of the two racks facing each other.

[0019] The ordinary gear is rotatably mounted in the middle of the fixed frame and meshes with both the upper and lower racks. When the adjusting screw drives the lower sliding seat to move up and down, the lower rack moves down or up accordingly, driving the ordinary gear to rotate. The ordinary gear then drives the upper rack to move in the opposite direction, thereby achieving synchronous reverse movement of the upper and lower sliding seats, that is, the two move closer or further apart at the same speed.

[0020] The system comprises multiple connecting rods, with one connecting rod rotatably connected to each of the left and right sides of each sliding seat. The inner end of each connecting rod is hinged to the corresponding sliding seat, while the outer end extends outward.

[0021] The number of wheel frames corresponds one-to-one with the connecting rods, and each connecting rod has a wheel frame rotatably connected to its outer end. The wheel frames are also slidably connected to the fixed frame, so that the wheel frames can only slide horizontally in the left and right directions and cannot deflect.

[0022] The flattening rollers are multiple in number and are rotatably mounted on corresponding wheel frames, moving together with the wheel frames. They are used to contact the surface of the copper foil being tested and flatten the copper foil by rolling. The flattening rollers are symmetrically distributed above and below the copper foil during operation, and can contact the upper and lower surfaces of the copper foil simultaneously.

[0023] Furthermore, each wheel frame is rotatably mounted with a guide wheel on the side near the connecting rod, and the guide wheel engages with the fixed frame. When the wheel frame moves, the guide wheel rolls on the fixed frame, providing guidance and support for the movement of the wheel frame and ensuring smooth movement of the flattening roller.

[0024] A method for testing the tensile properties of copper foil, using the aforementioned copper foil tensile property testing apparatus, includes the following steps: S100, place the copper foil on the mounting bracket; S200: Operate the flattening drive mechanism to bring the flattening roller into contact with the copper foil and move it from the center to both sides to flatten the copper foil; then, detach the flattening roller from the copper foil; S300: Drive the clamping component to move through the drive component to clamp both ends of the copper foil; S400: Drive the clamping component to move in the opposite direction through the drive component to stretch the copper foil, acquire tensile force data in real time, until the copper foil breaks, and complete the tensile performance test.

[0025] Furthermore, S200 includes rotating the rotating rod, which drives the adjusting screw to move via the bevel gear, causing the two sliding seats to move closer to each other, and then drives the wheel frame and flattening roller to move outward via the connecting rod to flatten the copper foil; subsequently, rotating the rotating rod in the opposite direction causes the flattening roller to reset and detach from the copper foil.

[0026] Furthermore, S300 includes: rotating the bidirectional lead screw to bring the two sliding frames closer together, and then rotating the tightening screw to clamp the two ends of the copper foil with the clamping plate; S400 includes: rotating the bidirectional lead screw in the opposite direction to move the two sliding frames away from each other.

[0027] The beneficial effects of this application are as follows: First, copper foil is prone to wrinkling or bending after sampling. It cannot be effectively flattened before testing (after sampling), leading to uneven stress concentration during tensile testing and premature breakage at defects. This fails to accurately reflect actual tensile performance, resulting in biased test results and affecting accuracy and reliability. This application addresses the above technical problems by proposing a copper foil tensile performance testing device. Its core design includes: a flattening component, located in the center of the worktable, used to flatten the copper foil before testing; the flattening component includes a fixed frame, a flattening roller, and a flattening drive mechanism; the fixed frame is fixed to the worktable, and the flattening drive mechanism can drive the flattening roller to move from the center of the copper foil to both sides. During testing, the flattening roller moves and contacts the copper foil, then moves outward and rotates to flatten the copper foil. Subsequently, the two ends of the copper foil are clamped for tensile performance testing. This allows the copper foil to be flattened while being clamped and stretched to both ends for tensile performance testing, eliminating initial wrinkles or bends, ensuring test accuracy, and improving test reliability.

[0028] Second, this application proposes a design concept for a flattening assembly. The flattening assembly includes a fixed frame, a flattening roller, and a flattening drive mechanism. The fixed frame is fixed to the worktable, and the flattening drive mechanism can drive the flattening roller to move from the center of the copper foil to both sides. The flattening drive mechanism includes: an adjusting screw, a rotating rod, a bevel gear, a sliding seat, a connecting rod, a wheel frame, a rack, a common gear, and a guide wheel. Its structural relationship is as follows: rotating the rotating rod → the bevel gear rotates → the adjusting screw rotates → the lower sliding seat moves vertically → the lower rack drives the common gear to rotate → the upper rack moves in the opposite direction → the upper and lower sliding seats move closer or further apart simultaneously → the connecting rod angle changes → pushing the wheel frame to slide left and right along the fixed frame → the flattening roller and guide wheel move accordingly, achieving contact or separation from the copper foil, and after contact, rolling out from the center to both sides. That is, when it is necessary to flatten the copper foil, the operator rotates the rotating rod, which drives the adjusting screw to rotate through the bevel gear transmission. The adjusting screw drives the lower sliding seat to move up or down via a threaded joint. The lower sliding seat drives the lower rack to move synchronously, which in turn drives the ordinary gear to rotate. The ordinary gear then drives the upper rack and the upper sliding seat to move in the opposite direction, causing the two sliding seats to move closer to each other synchronously. When the sliding seats move closer, the angle of the pushing rod changes. The outer end of the pushing rod pushes the corresponding wheel frame along with the flattening roller outward, causing the flattening roller to move from the center of the copper foil to the left and right sides. Through rolling contact, the copper foil is flattened, eliminating initial wrinkles or bends. After flattening, the rotating rod is rotated in the opposite direction, reversing the transmission process. The upper and lower sliding seats move away from each other synchronously, and the pushing rod drives the wheel frame and flattening roller to retract inward, causing the flattening roller to detach from the copper foil, preparing for subsequent clamping and tensile testing. Attached Figure Description

[0029] Figure 1 This is a three-dimensional overall schematic diagram of the copper foil tensile property testing device of this application.

[0030] Figure 2 This is a three-dimensional structural diagram of the test component of this application.

[0031] Figure 3 This is a three-dimensional structural diagram of the clamping component of this application.

[0032] Figure 4 This is a three-dimensional structural diagram of the smoothing component of this application.

[0033] Figure 5 This is a three-dimensional structural diagram of the rack and ordinary gear of this application.

[0034] Figure 6 This is a three-dimensional structural diagram of the wheel frame and guide wheel of this application.

[0035] The annotations in the attached figures are explained as follows: 1-Workbench; 2-Motor; 3-Double-acting lead screw; 4-Sliding frame; 5-Clamping frame; 6-Buffer spring; 7-Force gauge; 8-Tighten the screw; 9-Clamping plate; 10-Fixed bracket; 11-Adjusting screw; 12-Bevel gear; 13-Rotating rod; 14-Sliding seat; 15-Linkage; 16-wheel frame; 17-flattening roller; 18-Rack; 19 - Ordinary gears; 20-Guide wheel. Detailed Implementation

[0036] The present application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Example 1 like Figures 1-6 As shown, a copper foil tensile property testing device includes: a worktable 1, a testing component for clamping both ends of the copper foil for tensile property testing, and a smoothing component for flattening the copper foil before testing. The copper foil is first flattened by the smoothing component, and then the testing component moves to clamp both ends of the copper foil for tensile property testing.

[0038] Test Components The test components include: a. A driving component disposed on the workbench 1; the driving component is used to drive the clamping component to move to perform tensile performance testing on the copper foil. b. A clamping member is provided on the driving member for clamping both ends of the copper foil. The driving member drives the clamping member to move, and then the clamping member clamps both ends of the copper foil. Then the driving member drives the clamping member to move away from each other to perform a tensile performance test on the copper foil.

[0039] As for the driving components, they include: a motor 2 located on the left side of the worktable 1, a bidirectional lead screw 3 located on the output shaft of the motor 2, and a sliding frame 4 slidably located on the left and right sides of the worktable 1; The bidirectional lead screw 3 is rotatably connected to the worktable 1, and the surface of the bidirectional lead screw 3 is machined with a bidirectional helical raceway. Each sliding frame 4 is equipped with a ball nut, and the ball nuts on the sliding frame 4 are all adapted to the raceway of the bidirectional lead screw 3.

[0040] The working method of the drive is as follows: after the motor 2 starts, it drives the bidirectional lead screw 3 to rotate, so that the ball nut moves along the bidirectional spiral raceway, and drives the sliding frame 4 to move closer to each other. Then, it clamps the two ends of the copper foil. Then, the motor 2 operates in the opposite direction, driving the bidirectional lead screw 3 to rotate in the opposite direction, so that the ball nut moves back to its original position along the bidirectional spiral raceway, and drives the sliding frame 4 to move away from each other, thereby stretching the copper foil to both ends until it breaks to achieve tensile performance testing.

[0041] The clamping components include: a clamping frame 5 (the sliding frame 4 has two through holes in which linear bearings are placed, and the clamping frame 5 has a guide rod inserted into the linear bearings), two buffer springs 6 located between the clamping frame 5 and the sliding frame 4 on the same side (one end of the buffer spring is connected to the sliding frame 4, and the other end is free and not connected to the clamping frame; it should be noted that the buffer spring is not a necessary component), a horizontal connecting mechanism 7 between the clamping frame 5 and the sliding frame 4, and a clamping plate 9 connected to the clamping plate 9 by means of a tightening screw 8 threaded on the upper and lower parts of the clamping frame 5.

[0042] The clamping mechanism works as follows: Two sliding frames 4 move closer together, which in turn moves the clamping frame 5, the horizontal connecting mechanism 7, and the clamping plate 9 together, bringing the clamping plate closer to the copper foil. Then, the tightening screw 8 is rotated, causing it to move and move the clamping plates 9 closer together to clamp the ends of the copper foil. After clamping, the two sliding frames 4 move away from each other, moving along the clamping frame 5. The tension sensor in the horizontal connecting mechanism detects the tension, and the clamping frame 5 and clamping plate 9 continue to move, stretching the copper foil to both ends until it breaks, thus achieving tensile performance testing. Upon breakage, a buffer spring cushions the clamping frame 5 (avoiding the impact of the clamping frame 5 on the sliding frames 4 during sudden breakage). Then, the tightening screw 8 is rotated in the opposite direction, causing it to move in the opposite direction and move the clamping plates 9 away from each other, removing the broken copper foil. This allows for tensile force detection during copper foil testing while simultaneously providing cushioning protection for the clamping frame 5 after breakage, preventing damage and extending its service life.

[0043] It should be noted that the connection between the clamping frame and the sliding frame can also be achieved in other ways, such as the solutions CN223021812U and CN112504830B.

[0044] Smoothing components The smoothing assembly includes: a fixed frame 10 located on the upper rear side of the worktable 1; an adjusting screw 11 rotatably located in the middle of the worktable 1; a rotating rod 13 rotatably located in the upper front part of the worktable 1; bevel gears 12 located at the lower part of the adjusting screw 11 and the rear part of the rotating rod 13; sliding seats 14 slidably located on the upper and lower parts of the fixed frame 10; connecting rods 15 rotatably located on the left and right parts of the sliding seats 14; a wheel frame 16 rotatably located on the connecting rod 15; a flattening roller 17 rotatably located on the wheel frame 16; a rack 18 located at the rear of the sliding seat 14; a common gear 19 rotatably located in the middle of the fixed frame 10; and a guide wheel 20 rotatably located on the side of the wheel frame 16 near the connecting rod 15. The two bevel gears 12 mesh with each other, and the lower sliding seat 14 communicates with the adjusting screw 11. All wheel frames 16 are slidably connected to the fixed frame 10 via threaded connections. All racks 18 mesh with ordinary gears 19. All guide wheels 20 are in contact with horizontal guide plates (the purpose of the guide wheels 20 and the horizontal guide plates is to limit the wheel frame to moving only horizontally). Before testing, copper foil is placed in the middle of the fixed frame 10. Then, rotating the rotating rod 13 causes the bevel gears 12 to rotate. The two bevel gears 12 mesh with each other, causing the adjusting screw 11 to rotate. Under the action of the thread, the lower sliding seat 14 moves, driving the lower rack 18 to move. The lower rack 18 meshes with the ordinary gears 19, causing the ordinary gears 19 to rotate. The ordinary gears 19 then mesh with the upper rack 18. This causes the upper sliding seat 14 to move, bringing the two sliding seats 14 closer together. This causes the connecting rod 15 and wheel frame 16 to move, moving the flattening roller 17 to contact the copper foil. As the sliding seats 14 continue to move closer together, the connecting rod 15 rotates, causing the wheel frame 16 to move outwards simultaneously. This causes the guide wheel 20 to rotate and move, further moving and rotating the flattening roller 17 to flatten the copper foil. Then, by rotating the rotating rod 13 in the opposite direction, the bevel gear 12 rotates in the opposite direction. The two bevel gears 12 mesh with each other, causing the adjusting screw 11 to rotate in the opposite direction. Under the action of the screw, the lower sliding seat 14 moves in the opposite direction to reset, causing the lower rack 18 to move in the opposite direction to reset. The lower rack 18 interacts with the ordinary gear 19. The meshing motion causes the ordinary gear 19 to rotate in the opposite direction. The ordinary gear 19 meshes with the upper rack 18, driving the upper sliding seat 14 to move in the opposite direction and reset. This causes the two sliding seats 14 to move away from each other, causing the connecting rod 15 and the wheel frame 16 to move in the opposite direction and reset. This causes the flattening roller 17 to move and disengage from the copper foil, and also causes the guide wheel 20 to move and disengage from the horizontal guide plate. As the sliding seats 14 continue to move away from each other, the connecting rod 15 rotates in the opposite direction, causing the wheel frame 16 to move inward and reset. Then, the two ends of the copper foil are clamped for tensile performance testing. This allows the copper foil to be flattened while being clamped and stretched at both ends for tensile performance testing, eliminating initial wrinkles or bends, ensuring test accuracy, and improving test reliability.

[0045] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A copper foil tensile property testing apparatus characterized by, include: Workbench; A testing assembly, mounted on the worktable, is used to clamp both ends of a copper foil and perform tensile performance testing. The testing assembly includes a drive unit and clamping components for holding both ends of the copper foil; the drive unit can drive the clamping components to move. A smoothing assembly, located in the middle of the worktable, is used to smooth the copper foil before testing. The smoothing assembly includes a fixed frame, four smoothing rollers, and a smoothing drive mechanism. The fixed frame is fixed to the worktable. The four smoothing rollers are divided into two upper smoothing rollers and two lower smoothing rollers. The two upper smoothing rollers are symmetrically arranged above the copper foil, and the two lower smoothing rollers are symmetrically arranged below the copper foil, with each upper and lower smoothing roller corresponding one-to-one in the vertical direction. The smoothing drive mechanism can drive the two upper and two lower smoothing rollers to move synchronously from the middle of the copper foil to the left and right sides, smoothing the upper and lower surfaces of the copper foil simultaneously.

2. The copper foil tensile property testing device of claim 1, wherein, The smoothing drive mechanism includes: a vertically arranged adjusting screw, a horizontally arranged rotating rod, a pair of bevel gears, an upper sliding seat, a lower sliding seat, multiple connecting rods, multiple wheel frames, an upper rack, a lower rack, and gears; A pair of bevel gears are fixed to the lower part of the adjusting screw and the rear part of the rotating rod, respectively, and the two bevel gears mesh with each other; The upper and lower sliding seats are slidably connected to the fixed frame and can slide up and down along the fixed frame; the lower sliding seat has a threaded hole in the center, which is engaged with the external thread of the adjusting screw; The upper and lower racks are fixed to the rear of the upper and lower sliding seats respectively, and the tooth surfaces of the upper and lower racks face each other; the gear is rotatably mounted on the fixed frame, and the gear meshes with both the upper and lower racks simultaneously; One upper wheel frame assembly is symmetrically arranged on the lower left and right sides of the upper sliding seat, and one lower wheel frame assembly is symmetrically arranged on the upper left and right sides of the lower sliding seat; each upper and lower wheel frame assembly includes: a wheel frame and two connecting rods; a flattening roller is installed on each wheel frame, and the two ends of the connecting rods are respectively hinged to the corresponding sliding seat and the wheel frame. The wheel frames are all horizontally slidably connected to the fixed frame.

3. The copper foil tensile property testing apparatus of claim 2, wherein, The leveling drive mechanism also includes: an upper horizontal guide plate, a lower horizontal guide plate, and multiple guide wheels; The upper and lower horizontal guide plates are fixedly mounted on the fixed frame. The upper part of the wheel frame of the upper wheel frame assembly is provided with a horizontal hole for the upper horizontal guide plate to pass through, and the lower part of the wheel frame of the lower wheel frame assembly is provided with a horizontal hole for the lower horizontal guide plate to pass through. Each of the wheel frames is rotatably mounted with a guide wheel, which makes rolling contact with the corresponding horizontal guide plate.

4. The copper foil tensile property testing apparatus of claim 1, wherein, The driving component includes a motor located on the left side of the worktable, a bidirectional lead screw located on the output shaft of the motor, and two sliding frames; both sliding frames are mounted on the bidirectional lead screw, and the rotation of the bidirectional lead screw can cause the two sliding frames to move closer to or further away from each other.

5. The copper foil tensile property testing apparatus of claim 2, wherein, The bidirectional lead screw is provided with a bidirectional helical raceway; the two sliding frames are respectively slidably disposed on the left and right sides of the worktable, and each sliding frame is provided with a ball nut adapted to the bidirectional helical raceway.

6. The copper foil tensile property testing device according to claim 3, characterized in that, The clamping member is disposed on the sliding frame; each clamping member includes: a clamping frame, a horizontal connecting mechanism, two tightening screws, and two clamping plates; The clamping frame is provided with threaded holes at both the upper and lower parts. Two tightening screws are threaded into the threaded holes at the upper and lower parts of the clamping frame. The ends of the two tightening screws are respectively fixedly connected to clamping plates, and the two clamping plates are set accordingly. The clamping frame and the sliding frame are connected by the horizontal connecting mechanism; The horizontal connecting mechanism is equipped with a tension sensor.

7. The copper foil tensile property testing apparatus of claim 1, wherein, Each of the clamping components also includes two buffer springs, one end of which is fixedly connected to the sliding frame, and the other end is free and not connected to the clamping frame.

8. A method of testing the tensile properties of a copper foil, characterized by, Using the copper foil tensile property testing apparatus as described in claim 7, the following steps are included: S100, place the copper foil on the mounting bracket; S200: Operate the flattening drive mechanism to bring the flattening roller into contact with the copper foil and move it from the center to both sides to flatten the copper foil; then, detach the flattening roller from the copper foil; S300: Drive the clamping component to move through the drive component to clamp both ends of the copper foil; S400: Drive the clamping component to move in the opposite direction through the drive component to stretch the copper foil, acquire tensile force data in real time, until the copper foil breaks, and complete the tensile performance test.

9. The method of claim 8, wherein the copper foil is stretched to a thickness of 0.5 to 1.5 times the thickness of the copper foil before the stretching. S200 includes rotating a rotating rod, which drives an adjusting screw via a bevel gear to bring two sliding seats closer together, and then drives the wheel frame and flattening roller to move outward via a connecting rod to flatten the copper foil; subsequently, rotating the rotating rod in the opposite direction causes the flattening roller to reset and detach from the copper foil.

10. The method of claim 8, wherein the copper foil is stretched to a thickness of 0.5 to 1.5 times the thickness of the copper foil before the stretching. S300 includes: a bidirectional lead screw rotating to bring two sliding frames closer together, and then rotating a tightening screw to clamp the two ends of the copper foil with a clamping plate; S400 includes: a bidirectional lead screw rotating in the opposite direction to move the two sliding frames away from each other.

Images