Pole piece scribing mechanism

Abstract

According to the pole piece scribing mechanism, a pole piece is placed between a bottom plate and a pressing plate so that the pole piece can be fixed, then a sliding frame slides along a guide rail so that four blades can be located above four scribing grooves correspondingly, and a cutter adjusting plate moves in the vertical direction under the action of a guide assembly; the knife adjusting plate is pressed down to drive the blade to penetrate through the scribing groove to scribe the pole piece, four notches are formed in the pole piece, four points A, B, C and D are marked on the four notches and are arranged in a square shape, the length ratio of AB, CD, BC and AD before and after rolling is calculated, and the elongation percentage of the pole piece in the transverse and longitudinal X / Y directions is obtained; the length ratio of AC to BD before and after rolling is calculated, and the lateral bending warping rate of the pole piece is obtained.

Description

Technical Field

[0001] The invention relates to the field of pole piece rolling, and in particular to a pole piece scribing mechanism. Background Art

[0002] With the rapid development of the new energy battery manufacturing industry and the technological breakthroughs in battery performance, battery manufacturers are increasingly competing to improve the energy density and space utilization of batteries. In order to improve the energy density of batteries, rolling equipment is often required to roll the produced pole pieces, so that the pole pieces have a higher compaction density on the same area. However, due to the gap between the rollers at both ends of the rollers, the thickness of the incoming materials on both sides, and the alignment of the pole piece feeding, the pole pieces will be stretched and warped. For example, when the cylindrical battery is wound, due to the warping of the pole piece, the pole pieces will be misaligned and protruded between the positive and negative pole ears. As the diameter of the cylindrical battery increases, the phenomenon becomes more serious. Therefore, when rolling the pole piece, it is necessary to test the various parameters before and after rolling the pole piece, and adjust the various rolling parameters in real time to ensure the yield rate of the rolling process.

[0003] Traditional elongation detection devices usually perform surface calibration on the pole piece, detect the calibration data before and after rolling to achieve elongation measurement, or reflect it by measuring the change in coating surface density. Usually these methods can only determine the elongation of the pole piece, but do not determine the respective elongation of the pole piece in the X / Y direction, nor can they determine the lateral curvature of the pole piece. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a pole piece scribing mechanism, which can solve the problem that the existing pole piece elongation detection device cannot detect the respective elongation of the pole piece in the X / Y direction and cannot determine the lateral curvature of the pole piece.

[0005] The technical solution adopted by the present invention to solve the technical problem is: to provide a pole piece scribing mechanism, comprising:

[0006] A base, the base comprising a bottom plate;

[0007] A support frame, a pressing plate is arranged below the support frame, the pressing plate is arranged opposite to the bottom plate, the pressing plate and the bottom plate are used to clamp the pole piece, four scribing grooves are arranged in a square shape;

[0008] Guide rails, wherein four guide rails are provided and all are provided above the support frame, and the four guide rails are arranged in a square, wherein two of the guide rails are oriented in the X direction, and the other two of the guide rails are oriented in the Y direction;

[0009] A knife adjusting assembly, wherein four knife adjusting assemblies are provided, and the knife adjusting assemblies include a slide and a knife adjusting plate. The four slides are slidably connected to the four guide rails respectively, and a guide assembly is provided between the knife adjusting plate and the slide, and the guide assembly is used to limit the movement of the knife adjusting plate in the vertical direction; a blade is provided under each knife adjusting plate, and the cutting direction of the blade of the knife adjusting assembly connected to the guide rail in the X direction is the X direction, and the cutting direction of the blade of the knife adjusting assembly connected to the guide rail in the Y direction is the Y direction.

[0010] As a further improvement of the above technical solution, an elastic stopper is provided between the slide and the knife adjusting plate, and the elastic stopper is used to abut the knife adjusting plate against the slide in the horizontal direction;

[0011] The elastic limiting component includes a second screw, a spring plunger, and a limiting block. The length direction of the second screw is arranged along the horizontal direction. The elastic force direction of the spring plunger is parallel to the length direction of the second screw. The limiting block is slidably connected to the knife adjusting plate. A limiting hole is arranged on the limiting block. The head of the second screw is fixedly connected to the slide, and the tail of the second screw is loosely matched with the limiting hole. The bottom end of the spring plunger is fixed on the slide, and the elastic end thereof abuts against the limiting block.

[0012] As a further improvement of the above technical solution, the knife adjusting assembly also includes a slider and a differential head, the slider is slidably connected to the slide in the horizontal direction; the differential head is installed on the slide, and the output end of the differential head is used to abut against the slider and push the slider; a pressure block is provided on the knife adjusting plate, and the pressure block is used to abut against the slider, and the relative surfaces of the pressure block and the slider are set as inclined planes with the same angle, and the inclined plane is used to adjust the height of the pressure block during the movement of the slider.

[0013] As a further improvement of the above technical solution, a first guide groove and a slide groove are provided on the slide frame, the length direction of the first guide groove is the same as the moving direction of the slider, and the slider is slidably connected in the slide groove; the slider is provided with a first screw, the tail of the first screw is fixedly connected to the slider, and the head of the first screw is slidably connected in the first guide groove.

[0014] As a further improvement of the above technical solution, the guide assembly includes a second guide groove and a guide column, the second guide groove is an elongated strip, and the second guide groove is vertically arranged on the slide, the guide column is horizontally arranged on the knife adjusting plate, and the guide column is slidably connected in the second guide groove.

[0015] As a further improvement of the above technical solution, the four scribing grooves are all cross-shaped, and the inner walls of the four scribing grooves are all provided with chamfers.

[0016] As a further improvement of the above technical solution, the blade is connected to the knife adjusting plate through a mounting plate, and the cutting portion of the blade is located directly below the knife adjusting assembly.

[0017] As a further improvement of the above technical solution, the knife adjusting assembly also includes a compression spring, the axial direction of the compression spring is arranged along the vertical direction, one end of the compression spring is connected to the knife adjusting plate, and the other end is connected to the bottom of the slide.

[0018] As a further improvement of the above technical solution, limiting columns are provided on the support frame near both ends of the four guide rails.

[0019] As a further improvement of the above technical solution, the base further includes four columns, which are all vertically arranged and arranged in a square shape, one end of each column is connected to the bottom plate, and the other end is connected to a foot cup.

[0020] The beneficial effects of the present invention are as follows: placing the pole piece between the bottom plate and the pressure plate so that the pole piece can be fixed, and then sliding the slide along the guide rail so that the four blades are respectively located above the four scribing grooves, and the knife adjusting plate is moved in the vertical direction under the action of the guide assembly, and the knife adjusting plate is pressed down to drive the blade to pass through the scribing groove to scribing the pole piece, so that four incisions are obtained on the pole piece, and four points A, B, C, and D are marked on the four incisions, and the four points A, B, C, and D are arranged in a square, and the length ratios of AB, CD, BC, and AD before and after rolling are calculated to obtain the elongation rate of the pole piece in the horizontal and vertical X / Y directions; the length ratios of AC and BD before and after rolling are calculated to obtain the lateral bending curvature of the pole piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a structural schematic diagram of a pole piece scribing mechanism provided by a preferred embodiment of the present invention;

[0023] Figure 2 It is a structural schematic diagram of a pole piece scribing mechanism provided by a preferred embodiment of the present invention without a knife adjustment component;

[0024] Figure 3 It is a structural schematic diagram of a knife adjustment assembly of a pole piece scribing mechanism provided in a preferred embodiment of the present invention;

[0025] Figure 4 It is an exploded schematic diagram of a knife adjustment assembly of a pole piece scribing mechanism provided in a preferred embodiment of the present invention;

[0026] Figure 5 is a schematic diagram of a knife adjustment assembly of a pole piece scribing mechanism provided by a preferred embodiment of the present invention from another angle;

[0027] Figure 6 It is an exploded schematic diagram of another part of the knife adjustment assembly of the pole piece scribing mechanism provided by the preferred embodiment of the present invention;

[0028] Figure 7 yes Figure 6 Schematic diagram from another angle;

[0029] Figure 8 It is a schematic diagram of the structure of the pole piece after being cut by the pole piece scribing mechanism provided in the preferred embodiment of the present invention.

[0030] Reference numerals: 1, base, 2, support frame, 3, pole piece, 4, guide rail, 5, knife adjustment assembly;

[0031] 11. bottom plate, 12. column, 13. foot cup, 21. pressure plate, 22. limit column, 51. slide, 52. knife adjustment plate, 53. elastic limiter, 54. slide block, 55. micrometer head, 56. compression spring;

[0032] 211. scribing groove, 511. first guide groove, 512. slide groove, 513. positioning portion, 514. positioning clamp, 515. first side plate, 516. second side plate, 517. abutment block, 518. groove, 521. blade, 522. pressure block, 523. inclined surface, 524. limiting block, 525. limiting hole, 526. housing, 527. sliding pressure block, 528. connecting block, 529. mounting plate, 531. second screw, 532. spring plunger, 541. first screw, 571. second guide groove, 572. guide column. DETAILED DESCRIPTION

[0033] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work belong to the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. For example, fixed connection / fixed installation can be selected according to the needs of screw connection, bolt connection, pin connection, key connection, bonding, mortise and tenon connection, welding, riveting and other methods. For example, detachable connection can be selected according to the needs of screw connection, bolt connection, threaded connection, snap connection, mortise and tenon connection, Velcro connection and other methods. The various technical features in the invention can be combined interactively without conflicting with each other.

[0034] See also Figure 1 and Figure 2 The preferred embodiment of the present invention provides a pole piece scribing mechanism, including a base 1 and a support frame 2; the base 1 includes a bottom plate 11, and a pressing plate 21 is arranged below the support frame 2, the pressing plate 21 is arranged opposite to the bottom plate 11, and the pressing plate 21 and the bottom plate 11 are used to clamp the pole piece 3, and four scribing grooves 211 are arranged on the pressing plate 21, and the four scribing grooves 211 are arranged in a square shape; the scribing grooves 211 are used to determine the position of scribing, and when scribing the pole piece 3, the pole piece 3 is fixed by the pressing plate 21 and the bottom plate 11, which can ensure that when scribing, no relative movement occurs near the scribing line of the pole piece 3, thereby ensuring the scribing accuracy.

[0035] The pole piece scribing mechanism also includes a guide rail 4 and a knife adjustment assembly 5. There are four guide rails 4 and they are all arranged above the support frame 2. The four guide rails 4 are arranged in a square shape. Figure 1 , where the directions of two guide rails 4 are in the X direction, and the directions of the other two guide rails 4 are in the Y direction; there are four knife adjustment components 5, and the knife adjustment components 5 include a slide 51 and a knife adjustment plate 52. The four slides 51 are slidably connected to the four guide rails 4 respectively, and a guide component is arranged between the knife adjustment plate 52 and the slide 51, and the guide component is used to limit the movement of the knife adjustment plate 52 in the vertical direction; a blade 521 is arranged under the knife adjustment plate 52, and the cutting direction of the blade 521 of the knife adjustment component 5 connected to the X-direction guide rail 4 is the X direction, and the cutting direction of the blade 521 of the knife adjustment component 5 connected to the Y-direction guide rail 4 is the Y direction. The pole piece 3 is placed between the bottom plate 11 and the pressure plate 21 so that the pole piece 3 can be fixed, and then the slide 51 is slid along the guide rail 4 so that the four blades 521 are respectively located above the four scribing grooves 211, and the knife plate 52 is moved in the vertical direction under the action of the guide assembly, and the knife plate 52 is pressed down to drive the blade 521 to pass through the scribing groove 211 to scribing the pole piece 3, and four incisions are obtained on the pole piece 3, and four points A, B, C, and D are marked on the four incisions, and the four points A, B, C, and D are arranged in a square, and the length ratios of AB, CD, BC, and AD before and after rolling are calculated to obtain the elongation of the pole piece 3 in the horizontal and vertical X / Y directions; the length ratios of AC and BD before and after rolling are calculated to obtain the lateral bending curvature of the pole piece 3.

[0036] See also Figure 3An elastic limiter 53 is provided between the slide 51 and the knife adjusting plate 52, and the elastic limiter 53 is used to abut the knife adjusting plate 52 against the slide 51 in the horizontal direction; specifically, the elastic limiter 53 of the knife adjusting assembly 5 with the cutting direction being the X direction abuts against the knife adjusting plate 52 in the Y direction, and the elastic limiter 53 of the knife adjusting assembly 5 with the cutting direction being the Y direction abuts against the knife adjusting plate 52 in the X direction, and the abutting direction of the elastic limiter 53 is the direction approaching the guide rail 4, the elastic limiter 53 can press the knife adjusting plate 52 against the slide 51, and ensure that the line drawn by the blade 521 arranged below the knife adjusting plate 52 is parallel to the guide rail 4, so as to ensure the accuracy of the marking.

[0037] For details, see Figure 4 The elastic stopper 53 includes a second screw 531, a spring plunger 532, and a stopper 524. The length direction of the second screw 531 is arranged in the horizontal direction. The elastic force direction of the spring plunger 532 is parallel to the length direction of the second screw 531. The stopper 524 is slidably connected with the knife adjusting plate 52. A stopper hole 525 is arranged on the stopper block 524. The head of the second screw 531 is fixedly connected with the slide 51, and the tail of the second screw 531 is loosely matched with the stopper hole 525. The bottom end of the spring plunger 532 is fixed on the slide 51, and the elastic end of the spring plunger 532 abuts against the stopper block 524. The spring plunger 532 elastically squeezes the stopper block 524 in the horizontal direction. The stopper block 524 can move in the horizontal direction along the second screw 531, so that the knife adjusting plate 52 elastically abuts against the stopper block 524. The stopper block 524 presses the knife adjusting plate 52 against the slide 51 in the direction close to the guide rail 4 to ensure the marking accuracy.

[0038] More specifically, the limit block 524 includes a housing 526 and a sliding pressure block 527. The housing 526 is fixed to one side of the sliding pressure block 527. The housing 526 abuts against the spring plunger 532. The sliding pressure block 527 is slidably connected to the knife adjusting plate 52. The limit hole 525 is provided on the housing 526 and the sliding pressure block 527. The provision of the housing 526 can protect the sliding pressure block 527 and prevent the spring plunger 532 from crushing the sliding pressure block 527.

[0039] See also Figure 5The knife adjusting assembly 5 further includes a slider 54 and a differential head 55. The slider 54 is slidably connected to the carriage 51 in the horizontal direction. The differential head 55 is mounted on the carriage 51. The output end of the differential head 55 is used to abut against the slider 54 and push the slider 54. A pressing block 522 is provided on the knife adjusting plate 52. The pressing block 522 is used to abut against the slider 54. The surfaces opposite to the pressing block 522 and the slider 54 are set as inclined surfaces 523 with the same angle. The inclined surface 523 is used to adjust the height of the pressing block 522 during the movement of the slider 54. By abutting the output end of the differential head 55 against the slider 54 and pushing the slider 54, the height of the pressing block 522 is precisely adjusted under the action of the inclined surface 523. The pressing block 522 drives the knife adjusting plate 52 to move in the vertical direction, thereby realizing a greater degree of precision adjustment of the height of the blade 521.

[0040] See also Figure 4 and Figure 5 The slide 51 is provided with a first guide groove 511 and a slide groove 512. The length direction of the first guide groove 511 is the same as the moving direction of the slider 54. The slider 54 is slidably connected in the slide groove 512. The slider 54 is provided with a first screw 541. The tail of the first screw 541 is fixedly connected to the slider 54, and the head of the first screw 541 is slidably connected in the first guide groove 511. In the process of the micrometer head 55 precisely adjusting the height of the blade 521, the slide groove 512 guides the movement of the slider 54. The matching arrangement of the first screw 541 and the first guide groove 511 can guide the movement of the slider 54, so as to facilitate the adjustment of the height of the blade 521.

[0041] See also Figure 6 and Figure 7 The guide assembly includes a second guide groove 571 and a guide post 572. The second guide groove 571 is in a long strip shape and is vertically arranged on the slide 51. The guide post 572 is horizontally arranged on the knife adjusting plate 52, and the guide post 572 is slidably connected in the second guide groove 571. In the process of the knife adjusting plate 52 moving up and down, the coordinated arrangement of the guide post 572 and the guide groove 571 can guide the up and down movement of the knife adjusting plate 52, which is beneficial to the stability of the up and down movement of the knife adjusting plate 52.

[0042] In other embodiments, the guide assembly may also include a slide rail and a slider. The slide rail is vertically arranged on the slide frame, and the slider is installed on the knife adjusting board. The knife adjusting board is driven to move in the vertical direction by the slider moving along the slide rail. The friction coefficient between the slider and the slide rail is small, which is beneficial to reducing friction and facilitating the movement of the knife adjusting board.

[0043] See also Figure 6 and Figure 7In this embodiment, the slide 51 includes a first side plate 515 and a second side plate 516 that are arranged opposite to each other, the first guide groove 511 is arranged on the first side plate 515, the second guide groove 571 is arranged on the second side plate 516, and a contact block 517 is arranged on the side of the second side plate 516 that faces the knife adjusting plate 52, see Figure 4 The knife adjusting plate 52 is clamped between the limit block 524 and the abutment block 517, and the abutment block 517 is slidably connected to the knife adjusting plate 52. The abutment block 517 can support the knife adjusting plate 52 so that the limit block 524 and the knife adjusting plate 52 can be elastically abutted.

[0044] For more details, see Figure 6 A groove 518 is provided on the side of the abutment block 517 facing the knife adjusting plate 52. The groove 518 is provided to reduce the contact area between the abutment block 517 and the knife adjusting plate 52, which is beneficial to reduce the friction between the two and facilitate the sliding of the knife adjusting plate 52 relative to the abutment block 517.

[0045] See also Figure 5 The blade adjusting assembly 5 further includes a compression spring 56, the axial direction of which is arranged in the vertical direction, one end of which is connected to the blade adjusting plate 52, and the other end of which is connected to the bottom of the slide 51. When the blade 521 finishes marking, the compression spring 56 provides a rebound force, so that the blade adjusting plate 52 can move upward, ensuring that the blade 521 does not fall when not marking and preparing for the next marking.

[0046] In this embodiment, two compression springs 56 are provided, and the axial directions of the two compression springs 56 are arranged along the vertical direction, and the two compression springs 56 are respectively connected to the two sides of the knife adjusting plate 52. The two compression springs 56 can provide rebound elastic force for the two sides of the knife adjusting plate 52 respectively, so that the two sides of the knife adjusting plate 52 can move upward at the same time, thereby improving the reset efficiency of the knife adjusting plate 52.

[0047] See also Figure 3 A positioning portion 513 is provided above and below the slide 51. The positioning portion 513 includes two positioning clamps 514 that are relatively arranged. The knife adjusting plate 52 is clamped between the two positioning clamps 514. The positioning clamps 514 can prevent the knife adjusting plate 52 from moving in the X direction or the Y direction.

[0048] See also Figure 3 The upper end of the knife adjusting plate 52 is connected with a connecting block 528 , and the connecting block 528 is used to abut against two positioning clamping blocks 514 arranged above the slide 51 . The connecting block 528 can limit the descending height of the knife adjusting plate 52 .

[0049] See also Figure 2Limiting columns 22 are provided at both ends of the support frame 2 near the four guide rails 4. The limiting columns 22 are used to limit the movement of the slide 51 to prevent the slide 51 from leaving the guide rails 4.

[0050] The inner walls of the four scribing grooves 211 are all provided with chamfers, and the chamfers are provided to facilitate the blade 521 to pass through the scribing grooves 211 to cut the pole piece 3 .

[0051] The four scoring grooves 211 are all cross-shaped. The scoring grooves 211 are two intersecting long strips, and their width is equivalent to the thickness of the blade 521. When the blade 521 cuts the pole piece 3, the pole piece 3 near the cutting position can be pressed by the pressure plate 21, which can prevent the coating of the pole piece 3 near the cutting position from being lifted by the blade 521, which is beneficial to protecting the coating of the pole piece 3.

[0052] See also Figure 4 The blade 521 is connected to the knife adjusting plate 52 through the mounting plate 529, and the cutting part of the blade 521 is located directly below the knife adjusting assembly 5. The angle of the blade 521 can be adjusted by adjusting the mounting angle of the mounting plate 529, so that the blade 521 can cut the pole piece 3 at an optimal inclination angle, which is beneficial to ensuring the cutting effect of the blade 521; setting the blade 521 directly below the knife adjusting assembly 5 is beneficial to ensuring the formation of a cross-shaped incision.

[0053] See also Figure 1 The base 1 also includes four columns 12, which are vertically arranged and in a square shape. One end of the column 12 is connected to the bottom plate 11, and the other end is connected to a foot cup 13. The plane angle of the bottom plate 11 can be adjusted through the foot cup 13, so that the bottom plate 11 receives the transmitted pole piece 3 at a suitable angle, and before cutting the pole piece 3, the entire working surface can be parallel to the horizontal plane by adjusting the foot cup 13.

[0054] The method for testing the elongation rate and lateral bending curvature of a pole piece by a pole piece scribing mechanism provided in a preferred embodiment of the present invention is implemented by the following steps:

[0055] S0, adjusting the plane angle of the bottom plate 11 through the foot cup 13, so that the bottom plate 11 receives the transmitted pole piece 3 at a suitable angle;

[0056] S1. Place the electrode 3 between the bottom plate 11 and the pressing plate 21, so that the electrode 3 is clamped between the bottom plate 11 and the pressing plate 21. When marking the electrode 3, the electrode 3 is fixed by the pressing plate 21 and the bottom plate 11, so that no relative movement occurs near the marking line of the electrode 3 during marking, thereby ensuring the marking accuracy; and the entire working surface can be parallel to the horizontal plane by adjusting the foot cup 13;

[0057] S2, slide the carriage 51 along the guide rail 4 so that the four blades 521 are respectively located above the four scribing grooves 211, the scribing groove 211 is cross-shaped, and has intersecting X-direction notches and Y-direction notches. In this step, the blade 521 with the cutting direction in the X direction is aligned with the X-direction notch, and the blade 521 with the cutting direction in the Y direction is aligned with the Y-direction notch to determine the scribing position;

[0058] S3, press down the knife adjusting plate 52, the knife adjusting plate 52 drives the blade 521 downward to pass through the scribing groove 211, so that the blade 521 cuts the pole piece 3, and obtains two straight line cuts in the X direction and two straight line cuts in the Y direction on the pole piece 3; specifically, apply pressure to the connecting block 528, the knife adjusting plate 52 moves vertically downward, when the connecting block 528 abuts against the two positioning clamps 514, the knife adjusting plate 52 drops to the limit position; push the slider 54 to move through the differential head 55, adjust the height of the pressing block 522 under the action of the inclined surface 523, and the pressing block 522 drives the knife adjusting plate 52 to move in the vertical direction to achieve precise adjustment of the height of the blade 521.

[0059] S31, cancel the pressure on the connecting block 528, under the rebound effect of the compression spring 56, the blade plate 52 drives the blade 521 to move upward, so that the blade 521 is located above the pole piece 3, to prevent the blade 521 from scraping the pole piece 3, and prepare for the next step;

[0060] S4, slide the carriage 51 along the guide rail 4, replace the blade 521 with a different cutting direction, pass through the scoring groove 211 and cut the pole piece 3 downward, and finally obtain four cross-shaped cuts on the pole piece 3, see Figure 6 , the intersection points of the four cuts are A, B, C, and D respectively; specifically, the position of the linear cut in the X direction obtained by the pole piece 3 in step S3 is then obtained in the Y direction in this step, and similarly, the position of the linear cut in the Y direction obtained by the pole piece 3 in step S3 is then obtained in the X direction in this step, and a cross-shaped cut is completed by cutting two knife adjustment assemblies 5 arranged on two adjacent guide rails 4, and the method of moving the knife adjustment plate 52 downward for cutting in this step is the same as step S3, which will not be repeated here;

[0061] S40, repeating the above step S31 to prepare for the next marking;

[0062] S41, take out the pole piece 3 from between the bottom plate 11 and the pressing plate 21, measure the lengths of AB, CD, BC, AD, AC, and BD, roll the pole piece 3 through a roller press, and measure the lengths of AB, CD, BC, AD, AC, and BD after rolling; after rolling by the roller press, the pole piece 3 has a higher compaction density on the same area, but it will also cause a certain extension of the pole piece 3, and the pole piece 3 will bend and warp under the action of the rollers of the roller press. Measuring the data before and after rolling and recording them is helpful to grasp the specific extension and lateral bending and warping of the pole piece 3;

[0063] S5. Calculate the length ratios of AB, CD, BC, and AD before and after rolling to obtain the elongation of the pole piece 3 in the horizontal and vertical X / Y directions; calculate the length ratios of AC and BD before and after rolling to obtain the lateral bending curvature of the pole piece 3. The length growth of AB and CD shows the elongation of the pole piece 3 in the X direction before and after rolling, and the length growth of BC and AD shows the elongation of the pole piece 3 in the Y direction before and after rolling; the length shortening of AC and BD shows the lateral bending curvature of the pole piece 3 before and after rolling.

[0064] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A pole piece scribing mechanism, characterized in that: include: A base, the base comprising a bottom plate; A support frame, a pressing plate is arranged below the support frame, the pressing plate is arranged opposite to the bottom plate, the pressing plate and the bottom plate are used to clamp the pole piece, four scribing grooves are arranged in a square shape; Guide rails, wherein four guide rails are provided and all are provided above the support frame, and the four guide rails are arranged in a square, wherein two of the guide rails are oriented in the X direction, and the other two of the guide rails are oriented in the Y direction; A knife adjusting assembly, wherein four knife adjusting assemblies are provided, and the knife adjusting assemblies include a slide and a knife adjusting plate. The four slides are slidably connected to the four guide rails respectively, and a guide assembly is provided between the knife adjusting plate and the slide, and the guide assembly is used to limit the movement of the knife adjusting plate in the vertical direction; a blade is provided under each knife adjusting plate, and the cutting direction of the blade of the knife adjusting assembly connected to the guide rail in the X direction is the X direction, and the cutting direction of the blade of the knife adjusting assembly connected to the guide rail in the Y direction is the Y direction.

2. The electrode scribing mechanism according to claim 1, characterized in that: An elastic stopper is provided between the slide and the knife adjusting plate, and the elastic stopper is used to abut the knife adjusting plate against the slide in the horizontal direction; The elastic limiting component includes a second screw, a spring plunger, and a limiting block. The length direction of the second screw is arranged along the horizontal direction. The elastic force direction of the spring plunger is parallel to the length direction of the second screw. The limiting block is slidably connected to the knife adjusting plate. A limiting hole is arranged on the limiting block. The head of the second screw is fixedly connected to the slide, and the tail of the second screw is loosely matched with the limiting hole. The bottom end of the spring plunger is fixed on the slide, and the elastic end thereof abuts against the limiting block.

3. The pole piece scribing mechanism according to claim 1, characterized in that: The knife adjusting assembly also includes a slider and a differential head, wherein the slider is slidably connected to the slide in the horizontal direction; the differential head is installed on the slide, and the output end of the differential head is used to abut against and push the slider; a pressure block is provided on the knife adjusting plate, and the pressure block is used to abut against the slider, and the opposing surfaces of the pressure block and the slider are set as inclined planes with the same angle, and the inclined plane is used to adjust the height of the pressure block during the movement of the slider.

4. The pole piece scribing mechanism according to claim 3, characterized in that: The slide frame is provided with a first guide groove and a slide groove, the length direction of the first guide groove is the same as the moving direction of the slider, and the slider is slidably connected in the slide groove; the slider is provided with a first screw, the tail of the first screw is fixedly connected to the slider, and the head of the first screw is slidably connected in the first guide groove.

5. The pole piece scribing mechanism according to claim 1, characterized in that: The guide assembly includes a second guide groove and a guide column. The second guide groove is in an elongated strip shape and is vertically arranged on the slide. The guide column is horizontally arranged on the knife adjusting plate and is slidably connected in the second guide groove.

6. The pole piece scribing mechanism according to claim 1, characterized in that: The four scoring grooves are all cross-shaped, and the inner walls of the four scoring grooves are all provided with chamfers.

7. The pole piece scribing mechanism according to claim 1, characterized in that: The blade is connected to the knife adjusting plate through a mounting plate, and the cutting part of the blade is located directly below the knife adjusting assembly.

8. The pole piece scribing mechanism according to claim 1, characterized in that: The knife adjusting assembly also includes a compression spring, the axial direction of which is arranged along the vertical direction, one end of which is connected to the knife adjusting plate, and the other end of which is connected to the bottom of the slide.

9. The pole piece scribing mechanism according to claim 1, characterized in that: Limiting columns are arranged on the support frame near both ends of the four guide rails.

10. The pole piece scribing mechanism according to claim 1, characterized in that: The base also includes four columns, which are all vertically arranged and in a square shape. One end of each column is connected to the bottom plate, and the other end is connected to a foot cup.

Images