A long-life capacitor electrode foil tension detection device

Abstract

The application relates to the technical field of tension detection, and specifically discloses a long-service-life capacitor electrode foil tension detection device, which comprises a base, vertical columns are arranged on the upper sides of the base, a top base is arranged above the vertical columns, a lifting plate is arranged between the two vertical columns, clamping assemblies for clamping electrode foils are arranged on the upper side of the lifting plate and the lower side of the base, counterweights are arranged in the vertical columns, load-bearing frames for placing the counterweights are arranged in the interiors of the two sides of the lifting plate which extend into the interiors of the vertical columns, the tension detection device further comprises an adding assembly for adding counterweights to the load-bearing frames, the adding assembly comprises vertical rods arranged in the vertical columns, the bottoms of the counterweights are provided with spacing frames for spacing between adjacent counterweights, the adding assembly further comprises adjusting rods arranged in the interiors of the vertical columns, through cooperation of the above structure, the counterweights can be added step by step, the detection efficiency is improved, the situation that inertial force influences actual gravity is reduced, and the tension detection precision is improved.

Description

Technical Field

[0001] This invention relates to the field of tensile testing technology, and in particular to a tensile testing device for long-life capacitor electrode foil. Background Technology

[0002] A capacitor is an electronic component that stores electric charge and electrical energy. Its basic characteristic is that it stores energy through an electric field and releases energy when needed. The electrode foil is the key carrier for storing charge in a capacitor, and its performance directly determines the capacitor's core parameters such as capacitance, withstand voltage, and lifespan. High tensile strength foil can reduce microcracks during winding and reduce the risk of electrolyte penetration and corrosion. Therefore, long-life capacitors need to be equipped with electrode foil with high tensile strength. During the production and processing of electrode foil, the tensile strength of the electrode foil needs to be tested.

[0003] When measuring tensile strength, the required tensile force can be provided solely by the weight of a standard mass block, eliminating the need for a high-precision electric or hydraulic loading system. This direct use of the physical relationship between gravity and mass avoids errors introduced by complex instruments.

[0004] For example, the "Tension Test Device for Finger Sewing Needles" with publication number "CN116124584A" uses a method of balancing by hanging corresponding weights on a rope. If the strength of the suture thread meets the standard, it can pull the counterweight component; if it does not, the thread will separate, thus testing the strength of the suture thread. This method uses the gravity of the weights to provide tensile force for tensile testing. However, in the actual electrode foil tensile testing process, in order to determine the tensile limit of the electrode foil, the tensile force needs to be gradually increased to obtain the tensile limit of the electrode foil. Therefore, gravity needs to be added gradually during the test. This device cannot automatically add counterweights gradually, which requires manual replacement of the counterweights, affecting the efficiency of the test. At the same time, when adding counterweights, the falling counterweights can easily introduce inertial forces, which can easily affect the accuracy of the test. Summary of the Invention

[0005] The purpose of this invention is to provide a long-life capacitor electrode foil tensile testing device that can gradually add counterweights, which is beneficial to improving testing efficiency and reducing the influence of inertial forces on actual gravity, thereby improving the accuracy of tensile testing and solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a tensile testing device for long-life capacitor electrode foil, comprising a base, columns on both sides above the base, a top seat on top of the columns, a lifting plate between the two columns, clamping assemblies for holding the electrode foil provided above the lifting plate and below the base, a counterweight inside the columns, and load-bearing frames for placing the counterweight on both sides of the lifting plate extending into the columns, characterized in that the tensile testing device further comprises:

[0007] An adding assembly for adding counterweights to a load-bearing frame includes a vertical rod disposed within a column, a spacer at the bottom of the counterweight for creating a gap between adjacent counterweights, and an adjusting rod disposed within a column. The outer wall of the adjusting rod is configured with a stop plate for controlling the falling of the counterweight, and two stop plates are configured.

[0008] The tensile testing device also includes a restraining component to prevent the counterweight from falling directly onto the load-bearing frame;

[0009] The tensile testing device also includes a deceleration component to reduce the falling speed of the counterweight.

[0010] Preferably, the height difference between the two blocking plates is greater than the height of a single counterweight, a ball is disposed at the top of the adjusting rod, the two sides of the counterweight slide along the outer wall of the vertical rod, there is a height difference and an angular deviation between the two blocking plates, and a drive assembly for driving the adjusting rod to rotate is disposed inside the top seat.

[0011] Preferably, the driving component includes:

[0012] The mounting block is equipped with a double-acting lead screw inside. The two sides of the double-acting lead screw are threaded to the moving block. The front end of the moving block is equipped with a rack.

[0013] A gear is located on the top of the outer wall of the adjusting rod. The gear meshes with the rack, and the outer wall of the adjusting rod rotates with the top of the column and the bottom of the base.

[0014] The motor is used to drive the bidirectional lead screw to rotate, and the motor is located inside the top mount.

[0015] Preferably, the retarder component includes:

[0016] Rotating plates are located at the front and rear ends of the vertical rod. On the side of the rotating plate away from the axis of the vertical rod, there is a spring plate to prevent the counterweight from falling.

[0017] Preferably, the retarder component further includes:

[0018] The small shaft is located inside the vertical rod. The top of the small shaft extends into the interior of the top seat and is equipped with an inclined block. The outer wall of the small shaft is equipped with a ring. The front and rear end side walls of the ring rotate with the rotating plate. The vertical rod has a hole or groove corresponding to the rotating plate, and the rotating plate passes through the hole or groove.

[0019] An extrusion plate is positioned at the end of the rack, with a rotating shaft at the front end of the extrusion plate. The rack moves along with the extrusion plate and the rotating shaft to extrude the inclined surface of the inclined block, while the small shaft moves downward.

[0020] A retaining ring is disposed on the outer wall of the small shaft, and a first spring is fixedly connected between the retaining ring and the vertical rod.

[0021] Preferably, the obstruction assembly includes a first piston plate fixed to the bottom of the small shaft, the outer wall of the first piston plate being attached to the inner wall of the vertical rod, and the obstruction assembly also includes a slot on the outer wall of the front and rear ends of the vertical rod and located below the first piston plate, with an elastic rubber membrane fixedly connected to the inner side of the slot.

[0022] Preferably, the interior of the vertical rod is filled with a medium located below the first piston plate.

[0023] Preferably, the length of the elastic rubber membrane is greater than the height formed by stacking multiple counterweights.

[0024] Preferably, a limiting component for restricting the movement of the lifting plate is provided on the side of the column near the clamping assembly. The limiting component includes a piston sleeve fixedly connected to the outer wall of the column, a second piston plate disposed inside the piston sleeve, a connecting rod fixedly connected to the side wall of the second piston plate, a connecting frame fixedly connected to the side of the connecting rod away from the second piston plate, and the top of the connecting frame fixedly connected to the bottom of the rack. The limiting component also includes an entry groove opened on the column near the lifting plate, an elastic membrane fixedly connected inside the entry groove, an adhesive plate fixedly connected to the outer side of the elastic membrane, the adhesive plate sliding inside the entry groove, a through pipe fixedly inserted on the side of the piston sleeve away from the connecting frame, a connecting groove opened on the column between the through pipe and the entry groove, and a third spring fixedly connected between the second piston plate and the piston sleeve.

[0025] Preferably, the inner wall of the tube is fixedly connected with elastic strips in an annular arrangement, and a flexible membrane is fixedly connected between the outer wall of the multiple elastic strips and the inner wall of the tube.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. By adding components, it is possible to automatically add counterweights, and only one counterweight is added at a time, so as to gradually add counterweights and improve detection efficiency;

[0028] 2. By combining the slowing component and the hindering component, the elastic rubber membrane expands while adding counterweight, which blocks the falling counterweight and reduces the influence of inertial force on the actual gravity, thereby improving the accuracy of tensile force detection.

[0029] 3. By utilizing the obstruction component, the situation where the counterweight and spacer fall onto the elastic rubber diaphragm at excessive speed can be reduced, thus further improving the accuracy of the detection. Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is an overall structural view of the present invention;

[0032] Figure 2 This is a schematic diagram of the half-section structure of the present invention;

[0033] Figure 3 This is a schematic diagram of a half-section of the column structure of the present invention;

[0034] Figure 4 This is a schematic diagram of a half-section of the top of the column of the present invention;

[0035] Figure 5 This is a schematic diagram of a half-section of the middle part of the column of the present invention.

[0036] Figure 6 This is a schematic diagram of a half-section of the top seat of the present invention;

[0037] Figure 7 This is a half-sectional structural diagram of the vertical rod of the present invention;

[0038] Figure 8 For the present invention Figure 7 A magnified view of point A;

[0039] Figure 9 This is a partial side sectional view of the vertical rod of the present invention;

[0040] Figure 10 For the present invention Figure 9 Enlarged view of point B;

[0041] Figure 11 This is a partial structural schematic diagram of the limiting component of the present invention;

[0042] Figure 12 This is a schematic diagram of a half-section of the piston sleeve of the present invention;

[0043] Figure 13 This is a half-sectional structural diagram of the load-bearing frame of the present invention.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1. Base; 2. Column; 3. Top seat; 4. Limiting assembly; 41. Piston sleeve; 42. Second piston plate; 43. Connecting rod; 44. Connecting frame; 45. Inlet groove; 46. Elastic membrane; 47. Adhesive plate; 48. Through pipe; 49. Connecting groove; 410. Elastic strip; 411. Flexible membrane; 412. Third spring; 5. Clamping assembly; 6. Adding assembly; 61. Vertical rod; 62. Adjusting rod; 63. Blocking plate; 7. Drive assembly; 71. Installation... 72. Double-acting lead screw; 73. Moving block; 74. Rack; 75. Gear; 76. Motor; 8. Deceleration assembly; 81. Rotating plate; 82. Elastic plate; 83. Small shaft; 84. Inclined block; 85. Ring sleeve; 86. Extrusion plate; 87. Rotating shaft; 88. Fixed ring; 89. First spring; 9. Obstruction assembly; 91. First piston plate; 92. Elastic rubber diaphragm; 10. Support frame; 11. Counterweight; 12. Spacer; 13. Lifting plate. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Example 1: Please refer to Figures 1 to 10This invention provides a technical solution: a tensile testing device for electrode foil of a long-life capacitor, comprising a base 1, columns 2 fixed on both sides of the upper part of the base 1, a top seat 3 fixed on the upper part of the columns 2, a lifting plate 13 slidably connected between the two columns 2, and clamping components 5 for clamping the electrode foil provided above the lifting plate 13 and below the base 1. The clamping components 5 adopt mature clamping methods in the prior art, which will not be described in detail. A counterweight 11 is provided inside the columns 2, and the two sides of the lifting plate 13 extend into the interior of the columns 2 for fixation. The device includes a support frame 10 for placing the counterweight 11. The tensile testing device also includes an adding assembly 6 for adding the counterweight 11 to the support frame 10. The adding assembly 6 includes a vertical rod 61 fixed inside the column 2. The two sides of the counterweight 11 slide along the outer wall of the vertical rod 61. The bottom of the counterweight 11 is fixed with a spacer 12 to create a gap between adjacent counterweights 11. The adding assembly 6 also includes an adjusting rod 62 that rotates inside the column 2. The outer wall of the adjusting rod 62 is fixed with a baffle plate 63 for controlling the falling of the counterweight 11. The baffle plate 63 is equipped with… There are two obstruction plates 63, with a height difference and angular deviation between them. The top seat 3 houses a drive assembly 7 for rotating the adjusting rod 62. The tension detection device also includes a deceleration assembly 8 to reduce the falling speed of the counterweight 11. The deceleration assembly 8 is located above the base 1. The height difference between the two obstruction plates 63 is greater than the height of a single counterweight 11. A ball is positioned at the top of the adjusting rod 62; the ball's design reduces friction between the counterweight 11 and the obstruction plates 63. The drive assembly 7 includes a mounting block 71. The internal rotating bidirectional lead screw 72 of the 1 has a moving block 73 threadedly connected to both sides of the threaded part of the bidirectional lead screw 72. The front end of the moving block 73 is fixed with a rack 74. The drive assembly 7 also includes a gear 75, which is fixed to the top of the outer wall of the adjusting rod 62. The gear 75 meshes with the rack 74. The outer wall of the adjusting rod 62 rotates with the top of the column 2 and the bottom of the base 1. The drive assembly 7 also includes a motor 76, which is used to drive the bidirectional lead screw 72 to rotate. The motor 76 is fixedly installed inside the top seat 3. The motor 76 is a three-phase motor that can rotate in both directions.

[0048] By adopting the above technical solution, in the initial state, all the counterweights 11 are at the top position inside the column 2, and the bottom baffle 63 is located between the bottom of the bottom partition 12 and the bottom counterweight 11. At this time, the baffle 63 plays the role of limiting the counterweights 11 and the partition 12, preventing multiple counterweights 11 from falling.

[0049] During the test preparation, the electrode foil to be tested is cut into a suitable length, and the lifting plate 13 is manually slid and moved to a suitable position. Then, the top and bottom ends of the electrode foil are clamped by the clamping assembly 5.

[0050] During testing, a counterweight 11 is added. The output shaft of the motor 76 rotates, causing the bidirectional lead screw 72 to rotate. Under the action of the threaded connection, the two moving blocks 73 can move in a direction away from each other, and the rack 74 can move in a direction away from each other. At this time, under the action of the gear 75 meshing with the rack 74, the gear 75 can rotate the adjusting rod 62. During this process, the blocking plate 63 on the adjusting rod 62 rotates accordingly. The blocking plate 63 at the bottom rotates and no longer blocks the counterweight 11 at the bottom, causing the counterweight 11 at the bottom to fall, realizing automatic addition of the counterweight 11 and improving the efficiency of testing.

[0051] It should be noted that before the adjusting rod 62 rotates with the bottom blocking plate 63 to stop blocking the bottommost counterweight 11, the upper blocking plate 63 will rotate to the bottom of the second counterweight 11, ensuring that only one counterweight 11 and the spacer 12 fall at a time, so as to gradually add counterweight 11 and avoid multiple counterweight 11 falling at once, which would affect the accuracy of tensile force detection. The counterweight 11 and the spacer 12 together form a fixed added weight, and the weight added each time is the sum of the weights of the counterweight 11 and the spacer 12.

[0052] After the counterweight 11 has fallen, the output shaft of the motor 76 rotates in the opposite direction. At this time, the bidirectional lead screw 72 rotates in the opposite direction, causing the rack 74 to move in the opposite direction. This causes the gear 75 and the adjusting rod 62 to rotate in the opposite direction, and the two blocking plates 63 rotate to reset. This allows the upper blocking plate 63 to rotate without blocking the counterweight 11, and the counterweight 11 at the bottom falls onto the adjusting rod 62 at the bottom. By repeating the above operation, the counterweight 11 can be added gradually.

[0053] When the electrode foil breaks after the counterweight 11 is added, the tensile force can be calculated based on the number of counterweights 11 added. Then, the output shaft of the motor 76 rotates, causing the two racks 74 to move closer to each other. At this time, the gear 75 and the adjusting rod 62 rotate the two blocking plates 63 so that neither of the blocking plates 63 obstructs the counterweight 11. By manually sliding the lifting plate 13 upward, the load-bearing frame 10 moves upward with the counterweight 11 on its upper part until the top counterweight 11 is restricted by the top of the sliding grooves opened on both sides of the vertical rod 61 for sliding the counterweight 11. At this time, the lifting plate 13 can no longer be pushed. Then, the output shaft of the motor 76 rotates, causing the adjusting rod 62 to rotate, so that the bottom blocking plate 63 is located between the bottom of the bottom partition 12 and the bottom counterweight 11, realizing the restoration of the counterweight 11, which is convenient for the next electrode foil to be detected.

[0054] The deceleration assembly 8 includes a small shaft 83 disposed inside the vertical rod 61. The top of the small shaft 83 extends movably into the interior of the top seat 3 and is fitted with an inclined block 84. The small shaft 83 slides with the column 2 and the top seat 3. The deceleration assembly 8 also includes a pressing plate 86 fixed to the end of the rack 74. The front end of the pressing plate 86 is rotatably connected to a rotating shaft 87. The design of the rotating shaft 87 reduces the friction generated during movement. The rack 74 moves with the pressing plate 86 and the rotating shaft 87 to press the inclined surface of the inclined block 84, causing the small shaft 83 to move downward. The deceleration assembly 8 also includes a fixing ring fixed to the outer wall of the small shaft 83. 88. A first spring 89 is fixedly connected between the fixed ring 88 and the vertical rod 61. An obstruction assembly 9 is provided at the bottom of the small shaft 83. The obstruction assembly 9 includes a first piston plate 91 fixed at the bottom of the small shaft 83. The outer wall of the first piston plate 91 is attached to the inner wall of the vertical rod 61. The obstruction assembly 9 also includes a slot on the outer wall of the front and rear ends of the vertical rod 61 and located below the first piston plate 91. An elastic rubber membrane 92 is fixedly connected to the inner side of the slot. The interior of the vertical rod 61 is filled with a medium located below the first piston plate 91. The length of the elastic rubber membrane 92 is much greater than the height formed by the stacking of multiple counterweights 11.

[0055] By adopting the above technical solution, when the counterweight 11 falls, the inertial force of the motion will be greater than the actual gravity, which will affect the accuracy of the tensile force detection. Therefore, this solution designs an obstruction component 9. When the output shaft of the motor 76 drives the bidirectional lead screw 72 to rotate, causing the bottom blocking plate 63 to rotate and no longer obstruct the bottom counterweight 11, the racks 74 move away from each other, allowing the racks 74 to move along with the pressing plate 86 and the rotating shaft 87. At this time, the rotating shaft 87 presses the inclined surface of the inclined block 84. This allows the tilting block 84 to move downwards along with the small shaft 83, causing the first spring 89 to deform and thus causing the first piston plate 91 to move downwards. At this time, the distance between the bottom of the first piston plate 91 and the bottom of the inner side of the vertical rod 61 decreases, causing the elastic rubber diaphragm 92 to expand. The medium inside the vertical rod 61, which is located inside the first piston plate 91, is a viscous medium. When the counterweight 11 falls rapidly, the obstruction component 9 blocks the rapidly falling counterweight 11, so that the inertial force of the falling counterweight 11 does not directly act on the load-bearing frame 10.

[0056] After the counterweight 11 is obstructed by the first piston plate 91, it rotates in the opposite direction through the output shaft of the motor 76. At this time, the bidirectional lead screw 72 rotates in the opposite direction, causing the rack 74 to move in the opposite direction. While the two blocking plates 63 rotate and reset, the rack 74 carries the pressing plate 86 and the rotating shaft 87 away from the inclined block 84. At this time, with the elastic force of the first spring 89, the small shaft 83 carries the inclined block 84 and the first piston plate 91 upward and resets. At this time, the distance between the bottom of the first piston plate 91 and the bottom of the inner side of the vertical rod 61 increases, and the elastic rubber diaphragm 92 slowly contracts. When the elastic rubber diaphragm 92 contracts, the counterweight 11 slowly falls onto the load-bearing frame 10. This helps to reduce the influence of inertial force on the actual gravity, thereby improving the accuracy of tensile force detection.

[0057] The length of the elastic rubber membrane 92 is much greater than the height formed by the stacking of multiple counterweights 11, ensuring that when the elastic rubber membrane 92 expands, it can block the subsequent falling counterweights 11, preventing the subsequent falling counterweights 11 from quickly landing on the counterweights 11 that previously landed on the load-bearing frame 10. Furthermore, the bottom of the elastic rubber membrane 92 is located inside the load-bearing frame 10, and when the elastic rubber membrane 92 expands, it can play a certain role in limiting the load-bearing frame 10.

[0058] The deceleration assembly 8 includes rotating plates 81 disposed at the front and rear ends of the vertical rod 61. A spring plate 82 for preventing the counterweight 11 from falling is fixed on the side of the rotating plate 81 away from the axis of the vertical rod 61. A ring sleeve 85 is fixed on the outer wall of the small shaft 83. The front and rear end side walls of the ring sleeve 85 rotate with the rotating plate 81. A hole groove is opened on the vertical rod 61 corresponding to the rotating plate 81. The hole groove is located below the connection between the ring sleeve 85 and the rotating plate 81. The rotating plate 81 passes through the hole groove.

[0059] By adopting the above technical solution, when the tilting block 84 moves downward with the small shaft 83, the ring 85 moves downward accordingly, causing the connection between the ring 85 and the rotating plate 81 to move downward. At this time, the distance of the elastic plate 82 extending out of the vertical rod 61 becomes longer. When the counterweight 11 falls, the inner front and rear ends of the counterweight 11 and the spacer 12 are limited by the elastic plate 82, which slows down the falling speed. This reduces the situation where the elastic rubber diaphragm 92 cannot effectively block the counterweight 11 from falling due to excessive speed when the counterweight 11 and the spacer 12 fall on the elastic rubber diaphragm 92, thus further improving the detection accuracy.

[0060] After the test is completed, the rack 74, along with the pressing plate 86 and the rotating shaft 87, moves away from the inclined block 84. At this time, in conjunction with the elastic force of the first spring 89, the small shaft 83 moves upward with the inclined block 84 and the first piston plate 91 to reset. This causes the connection between the ring sleeve 85 and the rotating plate 81 to move downward. At this time, the distance of the elastic plate 82 extending out of the vertical rod 61 becomes shorter. When the counterweight 11 moves up and down, the elastic plate 82 does not contact the counterweight 11. Thus, by manually sliding the lifting plate 13 upward, the load-bearing frame 10 moves upward with the counterweight 11 on its upper part. During the process of restoring the counterweight 11, the elastic plate 82 will not generate resistance to the movement of the counterweight 11.

[0061] Example 2: The technical solution of this example differs from that of Example 1 in that: Figures 3 to 13 As shown, a limiting component 4 for restricting the movement of the lifting plate 13 is provided on the side of the column 2 near the clamping assembly 5. The limiting component 4 includes a piston sleeve 41 fixedly connected to the outer wall of the column 2. A second piston plate 42 is movably connected inside the piston sleeve 41. The outer wall of the second piston plate 42 fits against the inner wall of the piston sleeve 41. A connecting rod 43 is disposed on the side wall of the second piston plate 42. A connecting frame 44 is fixedly connected to the side of the connecting rod 43 away from the second piston plate 42. The top of the connecting frame 44 is fixedly connected to the bottom of the rack 74. 4 also includes an entry groove 45 opened on the column 2 near the lifting plate 13. An elastic membrane 46 is fixedly connected inside the entry groove 45. An adhesive plate 47 is fixedly connected to the outside of the elastic membrane 46. The adhesive plate 47 slides inside the entry groove 45. A through pipe 48 is fixedly inserted into the side of the piston sleeve 41 away from the connecting frame 44. A connecting groove 49 is opened between the through pipe 48 and the entry groove 45 on the column 2. A third spring 412 is fixedly connected between the second piston plate 42 and the piston sleeve 41. The connecting rod 43 is not connected to the second piston plate 42.

[0062] By adopting the above technical solution, when the counterweight 11 is added, the two racks 74 move in opposite directions, causing the connecting frame 44 to move with the connecting rod 43. The connecting rod 43 pushes the second piston plate 42 to move closer to the through pipe 48, and the third spring 412 is compressed. Under the action of the second piston plate 42, the second piston plate 42 can push the medium inside the piston sleeve 41, so that the medium inside the piston sleeve 41 enters the interior of the inlet groove 45 through the through pipe 48 and the connecting groove 49, increasing the pressure of the medium inside the inlet groove 45. As a result, the elastic membrane 46 expands under pressure, causing the sticking plate 47 to move towards the lifting plate 13. This allows the sticking plate 47 to squeeze the lifting plate 13. When the counterweight 11 is added, if the elastic rubber membrane 92 fails to effectively prevent the counterweight 11 from moving, the friction between the sticking plate 47 and the lifting plate 13 can counteract the inertial force caused by the falling counterweight 11, further reducing the impact of inertial force on the electrode foil and affecting the detection accuracy.

[0063] When the two racks 74 move in a direction that brings them closer to each other, the racks 74, along with the connecting frame 44 and the connecting rod 43, return to their original positions. Under the elastic force of the third spring 412, the second piston plate 42 gradually returns to its original position, causing the medium to gradually return to the inside of the piston sleeve 41. The pressure of the medium entering the groove 45 decreases, and the clamping plate 47 returns to its original position without pressing on the lifting plate 13.

[0064] It should be noted that a rubber pad can be attached to the clamping plate 47 near the lifting plate 13 to increase the friction when the clamping plate 47 presses against the lifting plate 13.

[0065] The inner wall of the tube 48 is fixedly connected with elastic strips 410 in an annular arrangement, and a flexible membrane 411 is fixedly connected between the outer wall of the multiple elastic strips 410 and the inner wall of the tube 48.

[0066] By adopting the above technical solution, under the elastic force of the third spring 412, as the medium gradually returns to the inside of the piston sleeve 41, the pressure of the liquid flow in the through pipe 48 can squeeze the elastic strip 410 and the flexible membrane 411, making the opening of the flexible membrane 411 smaller. This reduces the speed at which the medium flows into the piston sleeve 41 from the groove 45. As the elastic rubber membrane 92 slowly and gradually contracts, and the counterweight 11 falls onto the support frame 10 during the contraction of the elastic rubber membrane 92, the pressing plate 47 still squeezes the lifting plate 13, further reducing the impact of inertial force on the detection accuracy.

[0067] When the medium enters the tank 45, the opening of the flexible membrane 411 widens under the action of liquid flow, which facilitates the flow of the medium into the tank 45.

[0068] The bottom of the load-bearing frame 10 is provided with a cushioning component. The bottom of the load-bearing frame 10 is fixedly connected to a ring plate, and a sliding frame is slidably connected to the bottom of the ring plate. A second spring is fixedly connected between the sliding frame and the load-bearing frame 10. When the electrode foil breaks during testing, causing the load-bearing frame 10 to fall, the second spring can provide cushioning, which helps to reduce the probability of damage during use of the device.

[0069] Working principle: During the test preparation, the electrode foil to be tested is cut into a suitable length, and the lifting plate 13 is manually slid and moved to a suitable position. Then, the two ends of the electrode foil are clamped by the clamping component 5.

[0070] During testing, the output shaft of motor 76 rotates, causing the bidirectional lead screw 72 to rotate. Under the action of the threaded connection, the two moving blocks 73 can move in a direction away from each other, and the rack 74 can move in a direction away from each other. At this time, under the action of gear 75 meshing with rack 74, gear 75 can rotate with adjusting rod 62. During this process, the blocking plate 63 on adjusting rod 62 rotates accordingly. The bottom blocking plate 63 rotates and no longer blocks the bottom counterweight 11, allowing the bottom counterweight 11 to fall. Before the bottom blocking plate 63 rotates with adjusting rod 62 and no longer blocks the bottom counterweight 11, the upper blocking plate 63 will rotate to the bottom of the second counterweight 11, ensuring that only one counterweight 11 and spacer 12 fall.

[0071] Simultaneously, the rack 74 moves along with the compression plate 86 and the rotating shaft 87. At this time, the rotating shaft 87 compresses the inclined surface of the inclined block 84, causing the inclined block 84 to move downward along with the small shaft 83. The first spring 89 deforms, causing the first piston plate 91 to move downward. At this time, the distance between the bottom of the first piston plate 91 and the bottom of the inner side of the vertical rod 61 decreases, causing the elastic rubber membrane 92 to expand. The medium inside the vertical rod 61, which is located inside the first piston plate 91, is a viscous medium. When the counterweight 11 falls rapidly, the obstruction component 9 blocks the rapidly falling counterweight 11.

[0072] At the same time, the ring 85 moves downward with the small shaft 83, causing the connection between the ring 85 and the rotating plate 81 to move downward. At this time, the distance of the elastic plate 82 extending out of the vertical rod 61 becomes longer. When the counterweight 11 and the spacer 12 fall on the elastic rubber membrane 92, the elastic rubber membrane 92 is unable to effectively block the counterweight 11 from falling due to the excessive speed, thus further improving the accuracy of the detection.

[0073] As counterweight 11 is added, the two racks 74 move the connecting frame 44 and connecting rod 43. The second piston plate 42 pushes the medium inside the piston sleeve 41, causing the medium inside the piston sleeve 41 to enter the interior of the inlet groove 45 through the through pipe 48 and the connecting groove 49. This increases the pressure of the medium inside the inlet groove 45, causing the elastic membrane 46 to expand under pressure. This causes the pressing plate 47 to squeeze the lifting plate 13. Under the elastic force of the third spring 412, as the medium gradually returns to the interior of the piston sleeve 41, the pressure of the liquid flow in the through pipe 48 can squeeze the elastic strip 410 and the flexible membrane 411, making the opening of the flexible membrane 411 smaller. This reduces the speed at which the medium flows into the piston sleeve 41 from the inlet groove 45. As the elastic rubber membrane 92 slowly contracts, and as the counterweight 11 falls onto the load-bearing frame 10 during the contraction of the elastic rubber membrane 92, the pressing plate 47 continues to squeeze the lifting plate 13, further reducing the impact of inertial force on the detection accuracy.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A long-life capacitor electrode foil tensile testing device, comprising a base (1), columns (2) arranged on both sides above the base (1), a top seat (3) arranged above the columns (2), a lifting plate (13) arranged between the two columns (2), clamping components (5) for clamping the electrode foil arranged above the lifting plate (13) and below the base (1), a counterweight (11) arranged inside the columns (2), and load-bearing frames (10) for placing the counterweight (11) arranged on both sides of the lifting plate (13) extending into the interior of the columns (2), characterized in that, The tensile testing device also includes: An adding component (6) for adding counterweights (11) to the load-bearing frame (10) includes a vertical rod (61) disposed in the column (2), a partition (12) for creating a gap between adjacent counterweights (11) is disposed at the bottom of the counterweight (11), and the adding component (6) also includes an adjusting rod (62) disposed in the column (2), and a baffle (63) for controlling the falling of the counterweight (11) is disposed on the outer wall of the adjusting rod (62), and two baffles (63) are disposed. The tensile testing device also includes an obstruction assembly (9) to prevent the counterweight (11) from falling directly onto the load-bearing frame (10). The obstruction assembly (9) includes a first piston plate (91) fixed to the bottom of the small shaft (83). The outer wall of the first piston plate (91) is attached to the inner wall of the vertical rod (61). The obstruction assembly (9) also includes a slot on the outer wall of the front and rear ends of the vertical rod (61) and located below the first piston plate (91). An elastic rubber membrane (92) is fixedly connected to the inner side of the slot. The tension detection device also includes a deceleration assembly (8) for reducing the falling speed of the counterweight (11). The deceleration assembly (8) includes rotating plates (81) disposed at the front and rear ends of the vertical rod (61). On the side of the rotating plate (81) away from the axis of the vertical rod (61), there is an elastic plate (82) for hindering the falling of the counterweight (11). The deceleration assembly (8) also includes a small shaft (83) disposed inside the vertical rod (61). The top of the small shaft (83) extends movably into the interior of the top seat (3) and is equipped with an inclined block (84). The outer wall of the small shaft (83) is equipped with a ring sleeve (85). The front and rear end sidewalls of the ring sleeve (85) are connected to the rotating plate. (81) Rotate, the vertical rod (61) has a slot corresponding to the rotating plate (81), the rotating plate (81) passes through the slot, the deceleration assembly (8) also includes a pressing plate (86) disposed at the end of the rack (74), the front end of the pressing plate (86) is disposed with a rotating shaft (87), the rack (74) moves with the pressing plate (86) and the rotating shaft (87) to press the inclined surface of the inclined block (84), the small shaft (83) moves downward, the deceleration assembly (8) also includes a fixing ring (88) disposed on the outer wall of the small shaft (83), the fixing ring (88) and the vertical rod (61) are fixedly connected with a first spring (89).

2. The long-life capacitor electrode foil tensile testing device according to claim 1, characterized in that: The height difference between the two blocking plates (63) is greater than the height of a single counterweight (11). A ball is arranged on the top of the adjusting rod (62). The two sides of the counterweight (11) slide along the outer wall of the vertical rod (61). There is a height difference and an angle deviation between the two blocking plates (63). The top seat (3) is equipped with a drive assembly (7) for driving the adjusting rod (62) to rotate.

3. The long-life capacitor electrode foil tensile testing device according to claim 2, characterized in that, The driver component (7) includes: Mounting block (71), the interior of mounting block (71) is equipped with a two-way screw (72), both sides of the two-way screw (72) are threaded to a moving block (73), and the front end of the moving block (73) is equipped with a rack (74). Gear (75) is disposed on the top of the outer wall of the adjusting rod (62). Gear (75) meshes with rack (74). The outer wall of adjusting rod (62) rotates with the top of column (2) and the bottom of base (1). A motor (76) is used to drive the bidirectional lead screw (72) to rotate. The motor (76) is located inside the top seat (3).

4. The long-life capacitor electrode foil tensile testing device according to claim 1, characterized in that: The interior of the vertical rod (61) is filled with a medium located below the first piston plate (91).

5. The long-life capacitor electrode foil tensile testing device according to claim 1, characterized in that: The length of the elastic rubber membrane (92) is greater than the height formed when multiple counterweights (11) are stacked.

6. The long-life capacitor electrode foil tensile testing device according to claim 1, characterized in that: A limiting component (4) for restricting the movement of the lifting plate (13) is provided on the side of the column (2) near the clamping assembly (5). The limiting component (4) includes a piston sleeve (41) fixedly connected to the outer wall of the column (2). A second piston plate (42) is disposed inside the piston sleeve (41). A connecting rod (43) is fixedly connected to the side wall of the second piston plate (42). A connecting frame (44) is fixedly connected to the side of the connecting rod (43) away from the second piston plate (42). The top of the connecting frame (44) is fixedly connected to the bottom of the rack (74). The limiting component (4) also includes an opening An entry slot (45) is provided on the column (2) near the lifting plate (13). An elastic membrane (46) is fixedly connected inside the entry slot (45). An adhesive plate (47) is fixedly connected to the outside of the elastic membrane (46). The adhesive plate (47) slides inside the entry slot (45). A through pipe (48) is fixedly inserted on the side of the piston sleeve (41) away from the connecting frame (44). A connecting slot (49) is opened between the through pipe (48) and the entry slot (45) on the column (2). A third spring (412) is fixedly connected between the second piston plate (42) and the piston sleeve (41).

7. The long-life capacitor electrode foil tensile testing device according to claim 6, characterized in that: The inner wall of the tube (48) is fixedly connected with elastic strips (410) in an annular arrangement, and a flexible membrane (411) is fixedly connected between the outer wall of the multiple elastic strips (410) and the inner wall of the tube (48).

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