Tension detection device for electrode foil of long-life capacitor

Abstract

The invention relates to the technical field of tension detection, and particularly discloses a long-service-life capacitor electrode foil tension detection device which comprises a base, stand columns are arranged on the two sides of the upper portion of the base, a top seat is arranged on the stand columns, a lifting plate is arranged between the two stand columns, and clamping assemblies used for clamping electrode foil are arranged on the upper portion of the lifting plate and the lower portion of the base. Counterweights are arranged in the stand columns, the two sides of the lifting plate extend into the stand columns and are provided with bearing frames used for containing the counterweights, the tension detection device further comprises an adding assembly used for adding the counterweights to the bearing frames, the adding assembly comprises vertical rods arranged in the stand columns, and the bottoms of the counterweights are provided with separation frames used for enabling the adjacent counterweights to be spaced. The adding assembly further comprises an adjusting rod arranged in the stand column, through cooperation of the structures, the counter weight can be added step by step, the detection efficiency can be improved, the situation that actual gravity is affected by inertia force can be reduced, and therefore the tension detection precision is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tensile force detection, and more particularly to a tensile force detection device for the electrodes of long-life capacitors. Background Art

[0002] A capacitor is an electronic component that stores charge and electrical energy. Its basic characteristic is to store energy through an electric field and release energy when needed. Among them, the electrode foil is the key carrier for storing charge in the capacitor, and its performance directly determines the core parameters such as the capacitance, withstand voltage, and lifespan of the capacitor. High-tensile foil can reduce microcracks during winding and reduce the risk of electrolyte penetration and corrosion. Therefore, long-life capacitors require electrode foils with strong tensile strength. During the production and processing of electrode foils, it is necessary to detect the tensile strength of the electrode foils.

[0003] When measuring the tensile situation, only the gravity of a standard mass block is required to provide the tensile force required for the test, without the need for a high-precision electric or hydraulic loading system. This directly utilizes the physical relationship between gravity and mass, avoiding errors introduced by complex instruments.

[0004] For example, the "suture needle tensile force detection device" with the publication number "CN116124584A" completes the counterweight by hanging corresponding weights on a rope. If the strength of the suture needle thread meets the standard, it can pull the counterweight assembly, and if it does not meet the standard, the thread will separate, thereby detecting the strength of the suture needle thread. This solution provides tensile force through the gravity of the weights for tensile strength detection. However, in the actual process of detecting the tensile force of electrode foils, in order to determine the tensile force limit of the electrode foils, the tensile force needs to be gradually increased to obtain the tensile force limit of the electrode foils. Therefore, when conducting the test, the gravity needs to be gradually added. This device cannot automatically add counterweight objects step by step, resulting in the need to manually replace the counterweight objects, which affects the detection efficiency. At the same time, when adding counterweights, inertial forces are easily introduced when the counterweights fall, which in turn easily affects the detection accuracy. Summary of the Invention

[0005] The purpose of the present invention is to provide a tensile force detection device for the electrodes of long-life capacitors, which can gradually add counterweights, is conducive to improving the detection efficiency, and can reduce the influence of inertial forces on the actual gravity, thereby improving the accuracy of tensile force detection, so as to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A tensile force detection device for the electrodes of long-life capacitors, including a base, columns are configured on both sides above the base, a top seat is configured above the columns, a lifting plate is configured between the two columns, clamping assemblies for clamping the electrode foils are provided above the lifting plate and below the base, counterweights are arranged inside the columns, and load-bearing frames for placing counterweights are configured on both sides of the lifting plate extending into the inside of the columns. It is characterized in that the tensile force detection device further includes: An adding component for adding counterweights to a load-bearing frame. The adding component includes a vertical rod disposed inside a column. The bottom of the counterweight is provided with a spacer for creating a gap between adjacent counterweights. The adding component further includes an adjusting rod disposed inside the column. A blocking plate for controlling the fall of the counterweight is disposed on the outer wall of the adjusting rod, and there are two blocking plates. The tensile force detection device further includes an obstructive component for preventing the counterweight from directly falling on the load-bearing frame. The tensile force detection device further includes a speed-reducing component for reducing the falling speed of the counterweight.

[0007] 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. A driving component for driving the adjusting rod to rotate is disposed inside the top seat.

[0008] Preferably, the driving component includes: A mounting block. A bidirectional lead screw is disposed inside the mounting block. Moving blocks are threadedly connected to both threaded portions on the two sides of the bidirectional lead screw. A rack is disposed at the front end of the moving block. A gear is disposed at the top of the outer wall of the adjusting rod. The gear meshes with the rack. The outer wall of the adjusting rod rotates with the top of the column and the bottom of the base. A motor for driving the bidirectional lead screw to rotate. The motor is disposed inside the top seat.

[0009] Preferably, the speed-reducing component includes: Rotating plates are disposed at the front and rear ends of the vertical rod. Elastic sheets for obstructing the descent of the counterweight are disposed on the side of the rotating plate away from the axis of the vertical rod.

[0010] Preferably, the speed-reducing component further includes: A small shaft is disposed inside the vertical rod. The top of the small shaft extends into the inside of the top seat movably and is provided with an inclined block. A collar is disposed on the outer wall of the small shaft. The front and rear side walls of the collar rotate with the rotating plate. A slot is opened in the vertical rod corresponding to the rotating plate, and the rotating plate passes through the slot. An extrusion plate is disposed at the end of the rack. A rotating shaft is disposed at the front end of the extrusion plate. The rack drives the extrusion plate and the rotating shaft to move and extrude the inclined surface of the inclined block, and the small shaft moves downward. A fixing ring is disposed on the outer wall of the small shaft. A first spring is fixedly connected between the fixing ring and the vertical rod.

[0011] Preferably, the obstructive component includes a first piston plate fixed to the bottom of the small shaft. The outer wall of the first piston plate fits against the inner wall of the vertical rod. The obstructive component further includes empty slots on the outer walls at the front and rear ends of the vertical rod and below the first piston plate. An elastic rubber film is fixedly connected to the inner side of the empty slots.

[0012] Preferably, a medium is filled below the first piston plate inside the vertical rod.

[0013] Preferably, the length of the elastic rubber film is greater than the height formed when multiple counterweights are stacked.

[0014] Preferably, a limiting component for restricting the movement of the lifting plate is arranged on one side of the column close to the clamping component. The limiting component includes a piston sleeve fixedly connected to the outer wall of the column. A second piston plate is arranged inside the piston sleeve. A connecting rod is fixedly connected to the side wall of the second piston plate. A connecting frame is fixedly connected to the side of the connecting rod far from the second piston plate. The top of the connecting frame is fixedly connected to the bottom of the rack. The limiting component further includes an access groove opened on the column close to the lifting plate. An elastic film is fixedly connected inside the access groove. A pressing plate is fixedly connected to the outside of the elastic film. The pressing plate slides inside the access groove. A through pipe is fixedly inserted into the side of the piston sleeve far from the connecting frame. A communication groove is opened on the column between the through pipe and the access groove. A third spring is fixedly connected between the second piston plate and the piston sleeve.

[0015] Preferably, elastic strips are fixedly connected to the inner wall of the through pipe in a circumferential array. A flexible film is fixedly connected between the outer walls of the plurality of elastic strips and the inner wall of the through pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Through the function of adding components, automatic addition of counterweights can be achieved, and each time only one counterweight falls during the addition, gradually adding counterweights, which is beneficial to improving the detection efficiency; 2. Through the cooperation of the speed reduction component and the blocking component, while adding counterweights, the elastic rubber film expands to block the falling counterweights, reducing the influence of inertial force on the actual gravity, thereby improving the accuracy of tensile force detection; 3. Through the function of the blocking component, the situation that the elastic rubber film is difficult to effectively block the falling of counterweights due to excessive speed when the counterweights and the partition frame fall on the elastic rubber film can be reduced, thus further improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is the overall structure view of the present invention; Figure 2 It is the semi-sectional structure schematic diagram of the present invention; Figure 3 It is the semi-sectional structure schematic diagram of the column of the present invention; Figure 4 Schematic diagram of the half-section structure at the top of the column of the present invention; Figure 5 Schematic diagram of the half-section structure of the middle part of the column of the present invention; Figure 6 Schematic diagram of the half-section structure of the top seat of the present invention; Figure 7 Schematic diagram of the half-section structure of the vertical rod of the present invention; Figure 8 For the present invention Figure 7 Enlarged view at position A; Figure 9 Schematic diagram of the partial side-sectional structure of the vertical rod of the present invention; Figure 10 For the present invention Figure 9 Enlarged view at position B; Figure 11 Schematic diagram of the partial structure of the limiting component of the present invention; Figure 12 Schematic diagram of the half-section structure of the piston sleeve of the present invention; Figure 13 Schematic diagram of the half-section structure of the load-bearing frame of the present invention.

[0019] Explanation of reference numerals: 1. Base; 2. Column; 3. Top seat; 4. Limiting component; 41. Piston sleeve; 42. Second piston plate; 43. Connecting rod; 44. Connecting frame; 45. Entrance groove; 46. Elastic film; 47. Tightening plate; 48. Through pipe; 49. Connecting groove; 410. Elastic strip; 411. Flexible film; 412. Third spring; 5. Clamping component; 6. Adding component; 61. Vertical rod; 62. Adjusting rod; 63. Blocking plate; 7. Driving component; 71. Mounting block; 72. Bi-directional lead screw; 73. Moving block; 74. Rack; 75. Gear; 76. Motor; 8. Deceleration component; 81. Rotating piece; 82. Elastic piece; 83. Small shaft; 84. Tilted block; 85. Ring sleeve; 86. Extrusion plate; 87. Rotating shaft; 88. Fixed ring; 89. First spring; 9. Obstructing component; 91. First piston plate; 92. Elastic rubber film; 10. Load-bearing frame; 11. Counterweight; 12. Partition frame; 13. Lifting plate. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Embodiment 1: Please refer to Figures 1 to 10 , the present invention provides a technical solution: a long-life capacitor electrode foil tensile force detection device, including a base 1, two sides above the base 1 are fixedly provided with columns 2, the top of the columns 2 is fixedly provided with a top seat 3, a lifting plate 13 is slidably connected between the two columns 2, clamping assemblies 5 for clamping the electrode foil are arranged above the lifting plate 13 and below the base 1, the clamping assemblies 5 adopt a mature clamping method in the prior art and will not be elaborated too much. A counterweight 11 is arranged inside the column 2, and load-bearing frames 10 for placing the counterweight 11 are fixedly provided at both sides of the lifting plate 13 extending into the column 2. The tensile force detection device further includes an adding assembly 6 for adding the counterweight 11 to the load-bearing frame 10. The adding assembly 6 includes a vertical rod 61 fixed inside the column 2, both sides of the counterweight 11 slide along the outer wall of the vertical rod 61, a partition frame 12 for creating a gap between adjacent counterweights 11 is fixed at the bottom of the counterweight 11. The adding assembly 6 further includes an adjusting rod 62 rotatably arranged inside the column 2, a blocking plate 63 for controlling the falling of the counterweight 11 is fixed on the outer wall of the adjusting rod 62, and there are two blocking plates 63, there is a height difference and an angular deviation between the two blocking plates 63. A driving assembly 7 for driving the adjusting rod 62 to rotate is arranged inside the top seat 3. The tensile force detection device further includes a speed-reducing assembly 8 for reducing the falling speed of the counterweight 11. The speed-reducing assembly 8 is located above the base 1. The height difference between the two blocking plates 63 is greater than the height of a single counterweight 11. The top of the adjusting rod 62 is configured with a ball. The design of the ball reduces the friction between the counterweight 11 and the blocking plate 63. The driving assembly 7 includes a mounting block 71, a bidirectional lead screw 72 is rotatably arranged inside the mounting block 71, moving blocks 73 are threadedly connected to both threaded parts on both sides of the bidirectional lead screw 72, a rack 74 is fixed at the front end of the moving block 73. The driving assembly 7 further includes a gear 75 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 driving assembly 7 further includes a motor 76 for driving the bidirectional lead screw 72 to rotate. The motor 76 is fixedly installed inside the top seat 3, and the motor 76 is a three-phase motor that can rotate forward and backward.

[0022] By adopting the above technical solution, in the initial state, all the counterweights 11 are located at the top inside the column 2. The blocking plate 63 at the bottom is located between the bottom of the bottommost partition frame 12 and the bottommost counterweight 11. At this time, the blocking plate 63 plays a role in limiting the counterweight 11 and the partition frame 12, preventing the multiple counterweights 11 from falling.

[0023] When preparing for the detection, the electrode foil to be detected is cut into an appropriate length, the lifting plate 13 is manually slid to a suitable position, and then the top and bottom ends of the electrode foil are clamped by the clamping assembly 5.

[0024] When performing the detection, 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 racks 74 move in a direction away from each other. At this time, under the action of the engagement between the gear 75 and the rack 74, the gear 75 can drive the adjusting rod 62 to rotate. 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 bottommost position, causing the counterweight 11 at the bottommost position to fall, realizing the automatic addition of the counterweight 11 and improving the detection efficiency.

[0025] It should be noted that before the adjusting rod 62 drives the blocking plate 63 at the bottom to rotate and not block the counterweight 11 at the bottommost position, the blocking plate 63 above will rotate to the lower part of the second counterweight 11 from the top, ensuring that only one counterweight 11 and the spacer 12 fall, realizing the gradual addition of the counterweight 11 and avoiding the influence of multiple counterweights 11 falling at one time on the accuracy of the 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.

[0026] After the counterweight 11 has fallen, the output shaft of the motor 76 rotates in the reverse direction. At this time, the bidirectional lead screw 72 rotates in the opposite direction to before, causing the rack 74 to move in the opposite direction to before. In this way, the gear 75 and the adjusting rod 62 rotate in the opposite direction to before, and the two blocking plates 63 rotate to the reset position, causing the blocking plate 63 above to rotate and not block the counterweight 11. At this time, the counterweight 11 at the bottom falls on the adjusting rod 62 at the bottom. By repeating the above operations, the counterweight 11 can be added step by step.

[0027] After the counterweight 11 is added and the electrode foil breaks, the tensile force value can be calculated based on the number of added counterweights 11. Subsequently, 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 drive the two blocking plates 63 to rotate so that neither of the two blocking plates 63 obstructs the counterweight 11. By manually sliding the lifting plate 13 upward, the load-bearing frame 10 drives the counterweight 11 on its upper part upward until the counterweight 11 at the topmost position is restricted by the top of the chute provided on both sides of the vertical rod 61 for the counterweight 11 to slide. At this time, the lifting plate 13 can no longer be pushed. Subsequently, the output shaft of the motor 76 rotates, causing the adjusting rod 62 to rotate, so that the blocking plate 63 at the bottom is located between the bottom of the lowermost spacer 12 and the counterweight 11 at the lowermost position, realizing the restoration of the counterweight 11 and facilitating the detection of the next electrode foil.

[0028] The speed reduction assembly 8 includes a small shaft 83 disposed inside the vertical rod 61. The top of the small shaft 83 movably extends into the inside of the top seat 3 and is configured with an inclined block 84. The small shaft 83 slides with the vertical column 2 and the top seat 3. The speed reduction assembly 8 further includes a pressing plate 86 fixed to the end of the rack 74. A rotating shaft 87 is rotatably connected to the front end of the pressing plate 86. The design of the rotation of the rotating shaft 87 can reduce the frictional force generated during movement. The rack 74 drives the pressing plate 86 and the rotating shaft 87 to move and press the inclined surface of the inclined block 84, and the small shaft 83 moves downward. The speed reduction assembly 8 further includes a fixing ring 88 fixed to the outer wall of the small shaft 83. A first spring 89 is fixedly connected between the fixing ring 88 and the vertical rod 61. A blocking assembly 9 is provided at the bottom of the small shaft 83. The blocking 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 fits against the inner wall of the vertical rod 61. The blocking assembly 9 further includes empty slots on the outer walls of the front and rear ends of the vertical rod 61 and below the first piston plate 91. An elastic rubber membrane 92 is fixedly connected to the inner side of the empty slots. A medium is filled below the first piston plate 91 inside the vertical rod 61. The length of the elastic rubber membrane 92 is much greater than the height formed when a plurality of counterweights 11 are stacked.

[0029] By adopting the above technical solution, when the counterweight 11 falls, the inertial force due to movement is greater than the actual gravity, so it will affect the accuracy of the tensile force detection. Therefore, the blocking assembly 9 is designed in this solution. When the output shaft of the motor 76 drives the bidirectional lead screw 72 to rotate and the blocking plate 63 at the bottom rotates and no longer blocks the counterweight 11 at the bottommost position, since the racks 74 move away from each other, the racks 74 can drive the pressing plate 86 and the rotating shaft 87 to move. At this time, the rotating shaft 87 presses the inclined surface of the inclined block 84, which can make the inclined block 84 drive the small shaft 83 to move downward, and the first spring 89 deforms, so that the first piston plate 91 moves downward. At this time, the distance between the bottom of the first piston plate 91 and the inner bottom of the vertical rod 61 becomes smaller, so that the elastic rubber membrane 92 expands, and the medium filled inside the first piston plate 91 inside the vertical rod 61 is a viscous medium. When the counterweight 11 falls rapidly, the blocking assembly 9 blocks the rapidly falling counterweight 11, so that the inertial force of the counterweight 11 falling does not directly act on the load-bearing frame 10.

[0030] After the counterweight 11 is blocked by the first piston plate 91 when falling, it rotates in the opposite direction through the output shaft of the motor 76. At this time, the bidirectional screw rod 72 rotates in the opposite direction to that before, so that the rack 74 moves in the opposite direction to that before. While the two blocking plates 63 rotate to reset, the rack 74 moves the extrusion plate 86 and the rotating shaft 87 away from the tilting block 84. At this time, with the elastic force of the first spring 89, the small shaft 83 moves the tilting block 84 and the first piston plate 91 upward to reset. 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 becomes larger, and the elastic rubber membrane 92 slowly and gradually shrinks, so that when the elastic rubber membrane 92 shrinks, the counterweight 11 slowly falls on the load-bearing frame 10, which is conducive to reducing the situation where the inertial force affects the actual gravity, thereby improving the accuracy of tension detection.

[0031] The length of the elastic rubber membrane 92 is much larger than the height formed when multiple counterweights 11 are stacked, ensuring that when the elastic rubber membrane 92 expands, it can block the subsequently falling counterweight 11, and prevent the subsequently falling counterweight 11 from quickly falling on the counterweight 11 that previously fell on the load-bearing frame 10, and the bottom of the elastic rubber membrane 92 is located inside the load-bearing frame 10. When the elastic rubber membrane 92 expands, it can play a certain role in limiting the load-bearing frame 10.

[0032] The deceleration assembly 8 includes a rotating piece 81 arranged at the front and rear ends of the vertical rod 61. An elastic piece 82 for preventing the counterweight 11 from descending is fixed to the side of the rotating piece 81 away from the axis of the vertical rod 61. A ring sleeve 85 is fixed to the outer wall of the small shaft 83. The front and rear end side walls of the ring sleeve 85 rotate with the rotating piece 81. A hole groove is opened at the vertical rod 61 corresponding to the rotating piece 81. The hole groove is located below the connection between the ring sleeve 85 and the rotating piece 81, and the rotating piece 81 passes through the hole groove.

[0033] By adopting the above technical solution, when the tilting block 84 moves downward with the small shaft 83, the ring sleeve 85 moves downward accordingly, so that the connection between the ring sleeve 85 and the rotating plate 81 moves downward. At this time, the distance that the elastic sheet 82 extends out of the vertical rod 61 becomes longer. At this time, when the counterweight 11 falls, the inner front and rear ends of the counterweight 11 and the partition frame 12 are limited by the elastic sheet 82 and the falling speed is slowed down, reducing the situation where the elastic rubber membrane 92 is difficult to effectively prevent the counterweight 11 from falling due to excessive speed when the counterweight 11 and the partition frame 12 fall on the elastic rubber membrane 92, thereby further improving the detection accuracy.

[0034] After the detection is completed, the rack 74 drives the extrusion plate 86 and the rotating shaft 87 away from the inclined block 84. At this time, under the elastic force of the first spring 89, the small shaft 83 drives the inclined block 84 and the first piston plate 91 to move upward and reset. At the same time, the connection between the collar 85 and the rotating piece 81 moves downward. At this time, the distance that the elastic piece 82 extends out of the vertical rod 61 becomes shorter. When the counterweight 11 moves up and down at this time, the elastic piece 82 does not contact the counterweight 11. In this way, by manually sliding the lifting plate 13 upward, the load-bearing frame 10 drives the counterweight 11 on its upper part to move upward. During the process of restoring the counterweight 11, the elastic piece 82 will not generate resistance to the movement of the counterweight 11.

[0035] Embodiment 2: The technical solution of this embodiment is different from that of Embodiment 1 in that: as Figures 3 to 13 shown, a limiting component 4 for restricting the movement of the lifting plate 13 is arranged on one side of the column 2 close to the clamping component 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 with the inner wall of the piston sleeve 41. A connecting rod 43 is arranged 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. The limiting component 4 further includes an entry groove 45 opened on the column 2 close to the lifting plate 13. An elastic membrane 46 is fixedly connected inside the entry groove 45. A pressing plate 47 is fixedly connected to the outside of the elastic membrane 46. The pressing plate 47 slides inside the entry groove 45. A through pipe 48 is fixedly inserted on the side of the piston sleeve 41 away from the connecting frame 44. A communication groove 49 is opened on the column 2 between the through pipe 48 and the entry groove 45. 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.

[0036] By adopting the above technical solution, when adding the counterweight 11, since the two racks 74 move in the direction away from each other, the connecting frame 44 drives the connecting rod 43 to move. The connecting rod 43 pushes the second piston plate 42 to move in the direction close to the through pipe 48, and the third spring 412 is compressed. Under the action of the second piston plate 42, the medium inside the piston sleeve 41 can be pushed, so that the medium inside the piston sleeve 41 enters the inside of the entry groove 45 through the through pipe 48 and the communication groove 49, increasing the pressure of the medium inside the entry groove 45. In this way, the elastic membrane 46 expands under the pressure, so that the pressing plate 47 moves in the direction of the lifting plate 13. In this way, the pressing plate 47 can squeeze the lifting plate 13, so that when adding the counterweight 11, when the elastic rubber membrane 92 fails to effectively prevent the movement of the counterweight 11, under the frictional force between the pressing plate 47 and the lifting plate 13, the influence of the inertial force brought by the falling of the counterweight 11 can be offset, further reducing the influence of the inertial force on the detection accuracy of the electrode foil.

[0037] When the two racks 74 move in the direction of approaching each other, the racks 74 drive the connecting frame 44 and the connecting rod 43 to reset. Under the elastic force of the third spring 412, the second piston plate 42 gradually resets, so that the medium gradually returns to the inside of the piston sleeve 41. The pressure of the medium entering the groove 45 becomes smaller, and the pressing plate 47 resets without pressing the lifting plate 13.

[0038] It should be noted that a rubber pad can be bonded at the place where the pressing plate 47 is close to the lifting plate 13 to increase the friction force when the pressing plate 47 presses the lifting plate 13.

[0039] Elastic strips 410 are fixedly connected to the inner wall of the through pipe 48 in an annular array, and flexible membranes 411 are fixedly connected between the outer walls of the plurality of elastic strips 410 and the inner wall of the through pipe 48.

[0040] By adopting the above technical solution, under the elastic force of the third spring 412, during the process that the medium gradually returns to the inside of the piston sleeve 41, due to the pressure of the liquid flowing in the through pipe 48, the elastic strips 410 and the flexible membranes 411 can be squeezed, so that the opening of the flexible membrane 411 becomes smaller, thereby the speed of the medium flowing into the piston sleeve 41 from the groove 45. When the elastic rubber membrane 92 slowly contracts gradually, when the counterweight 11 falls on the bearing frame 10 during the contraction of the elastic rubber membrane 92, the pressing plate 47 still presses the lifting plate 13, further reducing the situation of being affected by the inertial force and affecting the detection accuracy.

[0041] When the medium enters the groove 45, under the action of the liquid flow, the opening of the flexible membrane 411 becomes larger, which is beneficial to the medium flowing into the groove 45.

[0042] A buffering component is arranged at the bottom of the bearing frame 10. A ring plate is fixedly connected to the bottom of the bearing frame 10. 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 bearing frame 10. When the electrode foil breaks and the bearing frame 10 drops during detection, the second spring can provide buffering, which is beneficial to reducing the probability of damage when the device is used.

[0043] Working principle: During the detection preparation, the electrode foil to be detected is cut into a suitable length, and the lifting plate 13 is manually slid to a suitable position, and then the two ends of the electrode foil are clamped by the clamping assembly 5.

[0044] When detecting, 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 the direction away from each other, and the racks 74 move in the direction away from each other. At this time, under the action of the meshing of the gear 75 and the rack 74, the gear 75 can drive the adjusting rod 62 to rotate. 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 bottommost position, causing the counterweight 11 at the bottommost position to fall. Before the adjusting rod 62 drives the blocking plate 63 at the bottom to rotate and no longer block the counterweight 11 at the bottommost position, the blocking plate 63 above will rotate to the lower part of the second counterweight 11 from the top, ensuring that only one counterweight 11 and the partition 12 fall.

[0045] At the same time, the rack 74 drives the pressing plate 86 and the rotating shaft 87 to move. At this time, the rotating shaft 87 presses the inclined surface of the inclined block 84, which can cause the inclined block 84 to drive the small shaft 83 to move downward, and the first spring 89 deforms, so that the first piston plate 91 moves downward. At this time, the distance between the bottom of the first piston plate 91 and the inner bottom of the vertical rod 61 becomes smaller, so that the elastic rubber membrane 92 expands. And the medium filled inside the first piston plate 91 inside the vertical rod 61 is a viscous medium. When the counterweight 11 falls rapidly, the blocking assembly 9 blocks the rapidly falling counterweight 11.

[0046] At the same time, the sleeve 85 moves downward with the small shaft 83, causing the connection part of the sleeve 85 and the rotating piece 81 to move downward. At this time, the distance that the elastic piece 82 extends out of the vertical rod 61 becomes longer, preventing the situation that when the counterweight 11 and the partition 12 fall on the elastic rubber membrane 92, the elastic rubber membrane 92 is difficult to effectively block the fall of the counterweight 11 due to excessive speed, thus further improving the detection accuracy.

[0047] While adding the counterweight 11, the two racks 74 drive the connecting frame 44 and the connecting rod 43 to move. The second piston plate 42 pushes the medium inside the piston sleeve 41, so that the medium inside the piston sleeve 41 enters the inside of the inlet groove 45 through the through pipe 48 and the communication groove 49, increasing the pressure of the medium inside the inlet groove 45. In this way, the elastic membrane 46 expands under the pressure, causing the pressing plate 47 to press the lifting plate 13. Under the elastic force of the third spring 412, during the process that the medium gradually returns to the inside of the piston sleeve 41, due to the pressure of the liquid flowing in the through pipe 48, the elastic strip 410 and the flexible membrane 411 can be pressed, making the opening of the flexible membrane 411 smaller, thus controlling the speed of the medium flowing into the piston sleeve 41 inside the inlet groove 45. When the elastic rubber membrane 92 slowly contracts, when the counterweight 11 falls on the bearing frame 10 during the contraction of the elastic rubber membrane 92, the pressing plate 47 still presses the lifting plate 13, further reducing the situation of being affected by inertia force and affecting the detection accuracy.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A long-life capacitor electrode foil tensile force detection device, comprising a base (1), two sides above the base (1) are respectively provided with columns (2), a top seat (3) is arranged above the columns (2), a lifting plate (13) is arranged between the two columns (2), clamping assemblies (5) for clamping the electrode foil are arranged above the lifting plate (13) and below the base (1), a counterweight (11) is arranged inside the columns (2), and load-bearing frames (10) for placing the counterweight (11) are arranged on both sides of the lifting plate (13) extending into the inside of the columns (2), characterized in that, The tensile force detection device further includes: An adding component (6) for adding counterweights (11) to the load-bearing frame (10). The adding component (6) includes a vertical rod (61) arranged inside the column (2). The bottom of the counterweight (11) is provided with a spacer (12) for creating a gap between adjacent counterweights (11). The adding component (6) further includes an adjusting rod (62) arranged inside the column (2). The outer wall of the adjusting rod (62) is provided with a blocking plate (63) for controlling the fall of the counterweight (11), and there are two blocking plates (63); The tensile force detection device further includes an obstruction component (9) for preventing the counterweight (11) from directly falling on the load-bearing frame (10); The tensile force detection device further includes a speed-reducing component (8) for reducing the falling speed of the counterweight (11).

2. The tensile force detection device for the long-life capacitor electrode foil 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). The top of the adjusting rod (62) is provided with a ball. The two sides of the counterweight (11) slide along the outer wall of the vertical rod (61). There is a height difference and an angular deviation between the two blocking plates (63). A driving component (7) for driving the adjusting rod (62) to rotate is arranged inside the top seat (3).

3. The long-life capacitor electrode foil tensile force detection device according to claim 2, characterized in that The driving component (7) includes: A mounting block (71). The inside of the mounting block (71) is provided with a bidirectional lead screw (72). Moving blocks (73) are threadedly connected to both threaded portions on the two sides of the bidirectional lead screw (72). The front end of the moving block (73) is provided with a rack (74); A gear (75) arranged on 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); A motor (76) for driving the bidirectional lead screw (72) to rotate. The motor (76) is arranged inside the top seat (3).

4. A long-life capacitor electrode foil tensile force detection device according to claim 1, characterized in that The speed-reducing component (8) includes: Rotating pieces (81) arranged at the front and rear ends of the vertical rod (61). On the side of the rotating piece (81) away from the axis of the vertical rod (61), there is an elastic piece (82) for obstructing the descent of the counterweight (11).

5. The long-life capacitor electrode foil tensile force detection device according to claim 4, wherein The speed-reducing component (8) further includes: A small shaft (83) arranged inside the vertical rod (61). The top of the small shaft (83) movably extends into the inside of the top seat (3) and is provided with an inclined block (84). The outer wall of the small shaft (83) is provided with a collar (85). The front and rear side walls of the collar (85) rotate with the rotating piece (81). A hole groove is opened in the vertical rod (61) corresponding to the rotating piece (81), and the rotating piece (81) passes through the hole groove; An extrusion plate (86) arranged at the end of the rack (74). The front end of the extrusion plate (86) is provided with a rotating shaft (87). The rack (74) drives the extrusion plate (86) and the rotating shaft (87) to move and extrude the inclined surface of the inclined block (84), and the small shaft (83) moves downward; A fixing ring (88) arranged on the outer wall of the small shaft (83). A first spring (89) is fixedly connected between the fixing ring (88) and the vertical rod (61).

6. The long-life capacitor electrode foil tensile force detection device according to claim 5, characterized in that: The blocking component (9) includes a first piston plate (91) fixedly attached to the bottom of the small shaft (83). The outer wall of the first piston plate (91) fits against the inner wall of the vertical rod (61). The blocking component (9) further includes empty slots on the outer walls at the front and rear ends of the vertical rod (61) and below the first piston plate (91), and an elastic rubber membrane (92) is fixedly connected to the inner side of the empty slots.

7. A long-life capacitor electrode foil tensile force detection device according to claim 6, characterized in that: The interior of the vertical rod (61) below the first piston plate (91) is filled with a medium.

8. The tensile force detection device for the long-life capacitor electrode foil according to claim 6, wherein: The length of the elastic rubber membrane (92) is greater than the height formed when multiple counterweights (11) are stacked.

9. A long-life capacitor electrode foil tensile force detection device according to claim 1, characterized in that: On one side of the column (2) close to the clamping component (5), a limiting component (4) for restricting the movement of the lifting plate (13) is provided. 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 arranged 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) further includes an access slot (45) opened on the column (2) close to the lifting plate (13). An elastic membrane (46) is fixedly connected to the inside of the access slot (45). A pressing plate (47) is fixedly connected to the outside of the elastic membrane (46). The pressing plate (47) slides inside the access slot (45). A through pipe (48) is fixedly inserted into the side of the piston sleeve (41) away from the connecting frame (44). A communication slot (49) is opened on the column (2) between the through pipe (48) and the access slot (45). A third spring (412) is fixedly connected between the second piston plate (42) and the piston sleeve (41).

10. A long-life capacitor electrode foil tensile force detection device according to claim 9, characterized in that: Elastic strips (410) are fixedly connected to the inner wall of the through pipe (48) in a circular array. A flexible membrane (411) is fixedly connected between the outer walls of the multiple elastic strips (410) and the inner wall of the through pipe (48).

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