A rolling device for bending the electrode lugs

Abstract

The present invention provides a rolling device after the tab is bent, comprising a Y-axis servo slide, an X-axis servo slide, a Z-axis servo slide, a support base, a clamping portion and a first rolling portion, wherein the X-axis servo slide is slidably connected to the Y-axis servo slide; the support base is connected to the X-axis servo slide; the Z-axis servo slide is fixedly connected to the support base; the clamping portion is connected to the support base; the first rolling portion comprises a roller and a roller driving device; the roller is rotatably connected to the roller driving device; the roller driving device is connected to the Z-axis servo slide. Position adjustment and rolling action are driven by the X, Y, and Z-axis servo slides and the roller driving device, and the rolling action is performed by the combination of the clamping portion and the first rolling portion, ensuring that no other deformation occurs to the tab during rolling, while ensuring the rolling effect and reducing the amount of rebound after bending.

Description

[Technical field]

[0001] The invention relates to the technical field of tab processing of a battery module, and in particular to a device for flattening a tab after it has been bent. [Background technology]

[0002] The existing production process of battery modules is to load the batteries and perform pretreatment, stack the cells after pretreatment, flip the stacked cells and transfer them to the assembly line, transfer them to the tab bending station for tab bending, and then roll them flat to reduce springback. The flattened cell module is laser welded and unloaded after passing the post-welding inspection.

[0003] Among them, in the rolling process after the battery cell tab is bent, the traditional operation adopts a floating rolling method. During the rolling process, both sides of the tab bending angle are not clamped or pressed, but are in a floating state, resulting in the inability to guarantee the rolling effect, resulting in a large springback error after bending and a low pass rate, which affects the subsequent welding accuracy, increases the defective rate, and causes losses to the company.

[0004] For example, the Chinese utility model patent application number is 201821151292.9, and the publication number is CN209109888U. It specifically discloses a battery cell tab bending and flattening device. Although it is provided with a first pair of centering clamping mechanisms and a second pair of centering clamping mechanisms, both are used to position and clamp the battery cell, i.e., the battery module, but the tab is not clamped. The patented technology has the above-mentioned defects. [Summary of the invention]

[0005] The technical problem to be solved by the present invention is to provide a rolling device after the pole ear is bent, which presses one side of the pole ear by a clamping part and rolls the other side by a first rolling part to prevent deviation, improve rolling accuracy, and reduce the amount of rebound after bending.

[0006] The present invention is implemented as follows: a flattening device for a bent tab, comprising:

[0007] Y-axis servo slide,

[0008] An X-axis servo slide, the X-axis servo slide is slidably connected to the Y-axis servo slide;

[0009] A supporting base plate, the supporting base plate is connected to the X-axis servo slide and is driven by the X-axis servo slide to move along the X-axis;

[0010] A Z-axis servo slide, the Z-axis servo slide is fixedly connected to the supporting base plate;

[0011] A pressing portion, the pressing portion being connected to the supporting bottom plate;

[0012] The first rolling part comprises a roller and a roller driving device; the roller is rotatably connected to the roller driving device, and the rotating shaft of the roller is arranged along the Y-axis direction; the roller driving device is connected to the Z-axis servo slide, and is driven by the Z-axis servo slide to move along the Z-axis.

[0013] Furthermore, it also includes a code scanning device, which is fixedly connected to the supporting base plate.

[0014] Furthermore, it also includes a special-shaped rolling flat portion, which includes a contour flattening member; the contour flattening member is connected to the Z-axis servo slide, and the contour flattening member is arranged along the X-axis direction.

[0015] Furthermore, the special-shaped flattening portion also includes

[0016] An extension plate, the extension plate is fixedly connected to the Z-axis servo slide and driven by the Z-axis servo slide to move up and down along the Z-axis;

[0017] An optical axis, one end of the optical axis is fixedly connected to the extension plate and arranged along the X-axis direction;

[0018] A flange plate, the flange plate is sleeved on the optical axis and fixedly connected to the extension plate;

[0019] A spring, wherein the spring is sleeved on the optical axis;

[0020] Wherein, the other end of the optical axis is fixedly connected to the contour flattening member; and the springs respectively press against the contour flattening member and the flange plate.

[0021] Furthermore, the pressing portion includes

[0022] A pressing drive device, the pressing drive device comprising a first fixed portion and a first movable portion movably connected to each other, and the first movable portion moves along the X-axis direction;

[0023] A pressing drive mounting plate, wherein the first fixing portion is fixedly connected to the pressing drive mounting plate; and the pressing drive mounting plate is fixedly connected to the supporting bottom plate;

[0024] A pressing member connected to the first movable part.

[0025] Furthermore, the pressing part further includes a floating group, the floating group is connected to the first movable part, and the floating group is arranged along the Y-axis direction; the pressing member is connected to the floating group.

[0026] Furthermore, the floating group includes

[0027] A propulsion plate, wherein a through hole and a first screw hole are formed on the propulsion plate along the Y-axis direction; the propulsion plate is fixedly connected to the first movable part, and the propulsion plate is arranged along the X-axis direction;

[0028] A first fixing plate, wherein the first fixing plate is vertically fixedly connected to the pushing plate, and the first fixing plate is arranged along the Y direction;

[0029] A guide rail, the guide rail is laid on the first fixed plate and arranged along the Y-axis direction;

[0030] A slider, the slider is fixedly connected to the pressing member and slidably connected to the guide rail;

[0031] A plunger, the plunger is locked into the first screw hole and abuts against the pressing member;

[0032] spring;

[0033] The bolt is provided with a second screw hole along the Y-axis direction; the bolt is sleeved with the spring and passes through the through hole and then locked into the second screw hole;

[0034] A shading sheet, the shading sheet is fixedly connected to the pressing member;

[0035] A photoelectric sensor is fixedly connected to the first fixing plate and is used to detect the position of the light shielding sheet.

[0036] Furthermore, the roller driving device comprises

[0037] A second fixed plate; the second fixed plate is connected to the Z-axis servo slide, and is driven by the Z-axis servo slide to move up and down along the Z-axis;

[0038] An actuator, the actuator comprising a second fixed portion and a second movable portion movably connected to each other; the second fixed portion is fixedly connected to the second fixed plate;

[0039] An adapter block is provided with an axial hole along the Y-axis direction, a bearing is embedded in the axial hole, and a rotating shaft is embedded in the inner ring of the bearing; the roller is fixedly sleeved on the rotating shaft; and the adapter block is fixedly connected to the second movable part.

[0040] Furthermore, there are two first flattening parts; there is one special-shaped flattening part; there are two clamping parts; the two first flattening parts are symmetrically arranged, and the special-shaped flattening part is located in the middle of the two first flattening parts; the two clamping parts are symmetrically arranged on the outside of the two first flattening parts.

[0041] The advantages of the present invention are: a rolling device after the pole ear is bent, comprising a Y-axis servo slide, an X-axis servo slide, a Z-axis servo slide, a supporting base plate, a clamping portion and a first rolling portion, wherein the X-axis servo slide is slidably connected to the Y-axis servo slide; the supporting base plate is connected to the X-axis servo slide, and is driven by the X-axis servo slide to move along the X-axis; the Z-axis servo slide is fixedly connected to the supporting base plate; the clamping portion is connected to the supporting base plate; the first rolling portion comprises a roller and a roller driving device; the roller is rotatably connected to the roller driving device, and the rotating shaft of the roller is arranged along the Y-axis direction; the roller driving device is connected to the Z-axis servo slide, and is driven by the Z-axis servo slide to move along the Z-axis. The position adjustment and rolling action are driven by the X, Y, and Z axis servo slides and roller drive devices, and the rolling action is performed by the cooperation of the clamping part and the first rolling part to ensure that no other deformation of the pole ear is caused during rolling, while ensuring the rolling effect and reducing the rebound amount after bending.

Brief Description of the Drawings

[0042] The present invention will be further described below in conjunction with embodiments with reference to the accompanying drawings.

[0043] Figure 1 It is a three-dimensional diagram of the rolling device described in the present invention.

[0044] Figure 2 It is an exploded schematic diagram of the Z-axis servo slide, the clamping portion, the first rolling portion, and the special-shaped rolling portion described in the present invention.

[0045] Figure 3 and Figure 4 Schematic diagram of the Z-axis servo slide, one of the clamping parts, and the first rolling part according to the present invention.

[0046] Figure 5 It is an exploded schematic diagram of the pressing portion described in the present invention.

[0047] Figure 6 It is a structural schematic diagram of the special-shaped rolling flat part and the Z-axis servo slide of the present invention.

[0048] Figure 7 It is a structural schematic diagram of the Z-axis servo slide, the clamping portion, the first flattening portion, and the special-shaped flattening portion described in the present invention.

[0049] Figure 8 It is a schematic diagram of the flattening effect of the pressing portion and the flattening portion described in the present invention.

[0050] Fig. 9 The figure is a top view of a special-shaped terminal ear of an existing battery module.

[0051] Fig.10 It is a schematic diagram of the installation position of the photoelectric sensor described in the present invention.

[0052] Fig.11 It is an exploded view of the roller installation part described in the present invention.

[0053] Fig.12 It is a cross-sectional view of the roller installation portion described in the present invention.

[0054] Fig.13 It is an exploded view of the special-shaped flattening portion described in the present invention.

[0055] Fig.14 It is a cross-sectional view of the special-shaped flattened portion of the present invention.

[0056] Fig.15 It is a schematic diagram of the effect of the flattening device described in the present invention being installed on a production line.

[0057] Description of reference numerals:

[0058] The rolling device 100,

[0059] Y-axis servo slide 1, Y-axis slide block 11;

[0060] X-axis servo slide 2, X-axis support seat 21, X-axis slide block 22;

[0061] Z-axis servo slide 3, Z-axis support seat 31, Z-axis slide block 32;

[0062] The clamping part 4, the clamping driving device 41, the first fixing part 411, the first movable part 412, the clamping driving mounting plate 42, the clamping member 43, the second screw hole 431, the floating group 44, the pushing plate 441, the through hole 4411, the first screw hole 4412, the first fixing plate 442, the guide rail 443, the slider 444, the plunger 445, the spring 446, the bolt 447, the light shielding sheet 448, and the photoelectric sensor 449;

[0063] A first rolling portion 5, a roller 51, a roller driving device 52, a second fixing plate 521, an actuator 522, a second fixing portion 5221, a second movable portion 5222, a transfer block 523, a shaft hole 5231, a bearing 5232, and a rotating shaft 5233;

[0064] Scanning device 6;

[0065] Profiled flattening part 7, contoured flattening member 71, extension plate 72, optical axis 73, flange plate 74, spring 75,

[0066] Supporting bottom plate 8;

[0067] Battery module 200, mounting slot 201, tab 202;

[0068] Tray 300;

[0069] Bending device 400;

[0070] Conveying device 500. [Specific implementation method]

[0071] In the description of the present invention, it is necessary to understand that the description indicating the orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0072] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] The overall concept of the present invention is as follows:

[0074] (1) The present invention forms an integral rolling device through an X-axis, Y-axis, and Z-axis servo slide, a clamping portion 4, and a rolling portion 5, wherein the X-axis, Y-axis, and Z-axis servo slides are used for position adjustment and serve as a driving force during rolling. At the same time, the clamping portion 4 and the first rolling portion 5 cooperate to perform the rolling action, ensuring that no other deformation of the tab occurs during rolling, while ensuring the rolling effect and reducing the amount of springback after bending.

[0075] (2) The pressing member 43 and the first movable portion 412 are connected via a floating group 44, so that the pressing member 43 can be fine-tuned to further improve the position accuracy, thereby improving the rolling effect.

[0076] (3) The code scanning device 6 is provided to scan the battery module and read the information, so as to facilitate the retrieval of the flattening processing program of the tabs on different battery modules, thereby meeting the flattening requirements of the tabs of different types of battery modules.

[0077] (4) The present invention is also provided with a contoured flattening member 71, which is compatible with flattening of special-shaped tabs, making the practical scope of the present invention wider.

[0078] See also Figures 1 to 15 shown.

[0079] Embodiment 1:

[0080] A flattening device 100 for bending a tab, comprising:

[0081] The Y-axis servo slide 1 is used to drive the X-axis servo slide 2 to adjust the Y-axis coordinate;

[0082] An X-axis servo slide 2, wherein the X-axis servo slide 2 is slidably connected to the Y-axis servo slide 1; the X-axis servo slide 2 is used to drive the Z-axis servo slide 3 and the clamping part 4 to adjust the X-axis coordinate;

[0083] A supporting base plate 8, wherein the supporting base plate 8 is connected to the X-axis servo slide 2 and is driven by the X-axis servo slide 2 to move along the X-axis;

[0084] A Z-axis servo slide 3, wherein the Z-axis servo slide 3 is fixedly connected to the supporting base plate 8; the Z-axis servo slide 3 is used to drive the first rolling portion 5 to adjust the Z-axis coordinate;

[0085] A clamping part 4, wherein the clamping part 4 is connected to the supporting base plate 8; the supporting base plate 8 is driven by the X-axis servo slide 2, thereby driving the clamping part 4 to move along the X-axis;

[0086] The first rolling part 5 includes a roller 51 and a roller driving device 52; the roller 51 is rotatably connected to the roller driving device 52, and the rotating axis of the roller 51 is arranged along the Y-axis direction; the roller driving device 52 is connected to the Z-axis servo slide 3, and is driven by the Z-axis servo slide 3 to move along the Z-axis.

[0087] Specific usage:

[0088] First, the clamping portion 4 and the first flattening portion 5 are adjusted to a predetermined position by the Y-axis servo slide 1, the X-axis servo slide 2, and the Z-axis servo slide 3. At this time, the clamping portion 4 and the side surface of the pole ear are in a straight line in the X-axis direction.

[0089] During rolling, the X-axis servo slide 2 drives the clamping part 4 to move along the X-axis to press the pole ear 202; then the roller driving device 52 drives the roller 51 along the X-axis, so that the roller 51 is attached to the front of the pole ear 202, and then the Z-axis servo slide 3 drives the first rolling part 5 to move along the Z-axis as a whole, thereby driving the roller 51 to roll up and down along the pole ear 202, rolling the pole ear 202 flat, ensuring the rolling quality of the pole ear 202, and finally reducing the amount of rebound of the pole ear 202 after bending.

[0090] In a specific implementation, a preferred embodiment further comprises a code scanning device 6, and the code scanning device 6 is fixedly connected to the supporting base plate 8. In a specific embodiment, the code scanning device 6 is fixedly connected to the pressing drive mounting plate 42 by connecting sheet metal, and the pressing drive mounting plate 42 is fixedly connected to the supporting base plate 8.

[0091] The code scanning device 6 is provided to meet the needs of rolling and flattening the tabs 202 of various types of battery modules 200, and realize automatic rolling and flattening. For example, in a specific embodiment, the bending device and the rolling and flattening device 100 described in the present invention can be connected to the existing PLC for unified control, and the bending processing program of the tabs 202 of various types of battery modules 200 is pre-set; when the bending is completed, the battery module 200 and the tabs 202 thereon are conveyed to the predetermined rolling and flattening station corresponding to the rolling and flattening device 100, and the code scanning device 6 scans the barcode or QR code on the battery module 200, collects the model of the battery module 200, and feeds it back to the PLC, and the PLC calls the corresponding processing program, and then performs the rolling and flattening process. The code scanning device 6 is an existing device, for example, an existing code scanner can be used.

[0092] like Figure 6 As shown, it also includes a special-shaped rolling flat portion 7, and the special-shaped rolling flat portion 7 includes a contour flattening member 71; the contour flattening member 71 is connected to the Z-axis servo slide 3, and the contour flattening member 71 is arranged along the X-axis direction.

[0093] The special-shaped rolling portion 7 is provided to meet the needs of rolling special-shaped pole lugs, and the shape of the surface to be rolled of the pole lug 202 is imitated by the profiling flattening member 71. When in use, the special-shaped rolling portion 71 is first adjusted to a predetermined position by the X-, Y-, and Z-axis servo slides, so that the profiling flattening frame 71 and the surface to be rolled of the pole lug 202 are directly opposite to each other, and then, the profiling flattening member 71 is driven to move along the X-axis by the X-axis servo slide 2, so that the profiling flattening member 71 presses and flattens the surface to be rolled of the pole lug 202, thereby flattening the surface to be rolled of the pole lug, achieving a rolling effect, ensuring the rolling quality of the pole lug 202, and reducing the amount of springback after bending.

[0094] like Figure 6 As shown, the special-shaped flattened portion 7 also includes

[0095] An extension plate 72, wherein the extension plate 72 is fixedly connected to the Z-axis servo slide 3 and is driven by the Z-axis servo slide 3 to move up and down along the Z-axis;

[0096] The optical axis 73, one end of the optical axis 73 is fixedly connected to the extension plate 72, and arranged along the X-axis direction;

[0097] A flange plate 74, wherein the flange plate 74 is sleeved on the optical axis 73 and fixedly connected to the extension plate 72;

[0098] A spring 75, wherein the spring 75 is sleeved on the optical axis 73;

[0099] The other end of the optical axis 73 is fixedly connected to the contour flattening member 71 ; the spring 75 presses against the contour flattening member 71 and the flange plate 74 respectively.

[0100] The optical axis 73, the flange plate 74, and the spring 75 form a buffer group, which plays a buffering and shock-absorbing role when the contour flattening member 71 is flattened. When there is only one optical axis 73, flange plate 74, and spring 75, it can be arranged at the center of the extension plate 72 and the contour flattening member 71. In another embodiment, Figure 6 As shown, there are two optical axes 73, springs 75, and flange plates 74, which are arranged symmetrically up and down to make the buffering more stable.

[0101] like Figure 5 As shown, the pressing portion 4 includes

[0102] The clamping drive device 41 includes a first fixed part 411 and a first movable part 412 which are movably connected to each other, and the first movable part 412 moves along the X-axis direction; the clamping drive device 41 is used to drive the clamping member 43 to move along the X-axis to clamp one side of the tab 202 into the mounting groove 202 of the tab 201 on the battery module 200.

[0103] The clamping drive mounting plate 42, the first fixing portion 411 is fixedly connected to the clamping drive mounting plate 42; the clamping drive mounting plate 42 is fixedly connected to the supporting base plate 8; the clamping drive mounting plate 42 plays a role in supporting and transmitting the driving force of the X-axis servo slide 2.

[0104] The pressing member 43 is connected to the first movable portion 412. The pressing member 43 is used to press a side surface of the tab 202 after being bent.

[0105] The pressing portion 4 further includes a floating group 44 . The floating group 44 is connected to the first movable portion 412 and arranged along the Y-axis direction. The pressing member 43 is connected to the floating group 44 .

[0106] In the embodiment shown in the drawings, there are two pressing parts 4 which are symmetrically arranged, and two symmetrically arranged pole ears 202 on the battery module 200 can be flattened at the same time.

[0107] The floating group 44 includes

[0108] A push plate 441, wherein a through hole 4411 and a first screw hole 4412 are formed on the push plate 441 along the Y-axis direction; the push plate 441 is fixedly connected to the first movable portion 412, and the push plate 441 is arranged along the X-axis direction;

[0109] A first fixing plate 442, wherein the first fixing plate 442 is vertically fixedly connected to the pushing plate 441, and the first fixing plate 442 is arranged along the Y direction;

[0110] A guide rail 443, wherein the guide rail 443 is laid on the first fixing plate 442 and arranged along the Y-axis direction;

[0111] A slider 444, wherein the slider 444 is fixedly connected to the pressing member 43, and the slider 444 is slidably connected to the guide rail 443;

[0112] The plunger 445 is locked into the first screw hole 4412 and abuts against the pressing member 43; the plunger 445 is an existing one that can be purchased directly on the market, such as model: PJH6-5, which serves as an adjusting knob.

[0113] Spring 446;

[0114] Bolt 447, the clamping member 43 is provided with a second screw hole 431 along the Y-axis direction; the bolt 447 is put on the spring 446 and then passes through the through hole 4411 and is locked into the second screw hole 431; the bolt 447 supports the clamping member 43, and the spring 446 plays the role of buffering and floating adjustment of the position of the clamping member 43, so that the position adjustment of the clamping member 43 is more precise.

[0115] A light shielding sheet 448, wherein the light shielding sheet 448 is fixedly connected to the pressing member 43;

[0116] The photoelectric sensor 449 is fixedly connected to the first fixing plate 442, and the photoelectric sensor 449 is used to detect the position of the light shielding sheet 448. The photoelectric sensor 449 is used to detect the position of the light shielding sheet 448, so as to fine-tune the position of the pressing member 43 and improve the pressing. In a specific embodiment, each light shielding sheet 448 corresponds to two photoelectric sensors 449, and the light shielding sheet 448 is located between the two photoelectric sensors 449, and the three are arranged adjacent to each other.

[0117] The purpose of setting the floating group 44 is to prevent the pressing member 43 from excessively interfering with the front roller 51, that is, to prevent the roller 51 from pressing against the pressing member 43 and being unable to continue pressing down when moving forward along the X-axis direction. Ideal state: the roller 51 just contacts the pressing member 43, the roller 51 can continue to press down, and slide along the surface of the pressing member 43 to the pole ear.

[0118] Adjustment method: When the program of the movement trajectory of the pressing member 43 is preset, it is adjusted to an ideal state, at which time the shading member 448 covers the photoelectric sensor 449 .

[0119] like Fig.10 As shown, when the light shielding sheet 448 is located in front of the photoelectric sensor 449, that is, Fig.10 The photoelectric sensor 449 is on the left side, and the photoelectric sensor 449 is in the on state. At this time, the pressing member 43 needs to be adjusted to Fig.10 The light shielding sheet 448 is moved to the right side of the photoelectric sensor 449, thereby interrupting the light signal and placing the pressing member 43 in an ideal state.

[0120] like Figure 3 As shown, the roller driving device 52 includes

[0121] The second fixed plate 521 is connected to the Z-axis servo slide 3 and is driven by the Z-axis servo slide 3 to move up and down along the Z-axis;

[0122] The actuator 522 includes a second fixed portion 5221 and a second movable portion 5222 that are movably connected to each other; the second fixed portion 5221 is fixedly connected to the second fixed plate 521; in a specific implementation, the actuator 522 can be a cylinder or a hydraulic cylinder, which can be selected according to the on-site use requirements. In a specific embodiment, the actuator 522 is a cylinder.

[0123] The adapter block 523 has an axial hole 5231 opened along the Y-axis direction, a bearing 5232 is embedded in the axial hole 5231, and a rotating shaft 5233 is embedded in the inner ring of the bearing 5232; the roller 51 is fixedly sleeved on the rotating shaft 5233; the adapter block 523 is fixedly connected to the second movable part 5222.

[0124] There are two first flattening parts 5 ; there is one special-shaped flattening part 7 ; there are two clamping parts 4 ; the two first flattening parts 5 are symmetrically arranged, and the special-shaped flattening part 7 is located in the middle of the two first flattening parts 5 ; the two clamping parts 4 are symmetrically arranged on the outside of the two first flattening parts 5 .

[0125] The X-axis servo slide 2, the Y-axis servo slide 1, and the Z-axis servo slide 3 are all existing standard parts and can be directly purchased on the market.

[0126] In a specific embodiment, for example, the model is:

[0127] Y-axis servo slide 1: SATA136D-L10-S850-M3-P400W;

[0128] Z-axis servo slide 3: SATA60D-L10-S100-M2-P100W;

[0129] X-axis servo slide 2: SATA100D-L10-S150-M2-P200W;

[0130] The X-axis servo slide 2 includes an X-axis support seat 21, two X-axis slide blocks 22, two X-axis slide rails, an X-axis lead screw, a first nut and a first motor;

[0131] The two X-axis slide rails are parallel and fixedly connected to the X-axis support seat 21;

[0132] The two X-axis slide blocks 22 are slidably connected to the two X-axis slide rails in a one-to-one correspondence;

[0133] The X-axis screw is rotatably connected to the X-axis support seat 21; the X-axis screw is fixedly connected to the output shaft of the first motor; the first motor is fixedly connected to the X-axis support seat 21;

[0134] The first nut is fixedly connected to the two X-axis sliders 22; the first nut is also locked into the X-axis screw rod through a thread;

[0135] The Z-axis servo slide 3 includes a Z-axis support seat 31, two Z-axis slide blocks 32, two Z-axis slide rails, a Z-axis screw rod, a second nut and a second motor;

[0136] The two Z-axis slide rails are parallely and fixedly connected to the Z-axis support seat 31;

[0137] The two Z-axis sliders 32 are slidably connected to the two Z-axis slide rails in a one-to-one correspondence;

[0138] The Z-axis screw is rotatably connected to the Z-axis support seat 31; the Z-axis screw is fixedly connected to the output shaft of the second motor; the second motor is fixedly connected to the Z-axis support seat 31;

[0139] The second nut is fixedly connected to the two Z-axis sliders; the second nut is also locked into the Z-axis screw rod through a thread;

[0140] The Y-axis servo slide 1 comprises a Y-axis support seat, two Y-axis sliders 11, two Y-axis slide rails, a Y-axis lead screw, a third nut and a third motor;

[0141] The two Y-axis slide rails are parallely and fixedly connected to the Y-axis support seat;

[0142] The two Y-axis sliding blocks 11 are slidably connected to the two Y-axis slide rails in a one-to-one correspondence;

[0143] The Y-axis screw is rotatably connected to the Y-axis support seat; the Y-axis screw is fixedly connected to the output shaft of the third motor; the third motor is fixedly connected to the Y-axis support seat;

[0144] The third nut is fixedly connected to the two Y-axis sliders 11; the third nut is also screwed into the Y-axis screw rod;

[0145] Wherein, the two Y-axis sliders 11 are fixedly connected to the X-axis support seat 21;

[0146] The support base plate 8 is fixedly connected to the two X-axis sliders 22;

[0147] The Z-axis support seat 31 is fixedly connected to the support base plate 8;

[0148] The two Z-axis slide blocks 32 are fixedly connected to the roller driving device 52 .

[0149] Embodiment 2: Based on Embodiment 1,

[0150] The second fixing plate 521 is fixedly connected to the two Z-axis sliders 32 .

[0151] The extension plate 72 and the second fixing portions 5221 of the two actuators 522 are symmetrically fixedly connected to the second fixing plate 521 and are fixed by screws respectively. The extension plate 72 is located in the middle.

[0152] The clamping drive mounting plates 42 are locked on the X-axis sliders 22 by screws in a one-to-one correspondence.

[0153] Directions:

[0154] The rolling device 100 is installed on the production line and is located after the process sequence of the bending device 400. The bending device 400 can adopt an existing one or be redesigned.

[0155] A PLC is used as a controller, for example, the model is: 6ES7516-3AN01-0AB0. The bending device 400, the flattening device 100, and the conveying device 500 are all connected to the PLC for unified control.

[0156] The roller drive device 52 and the clamping drive device 41 both use cylinders. Both of them and the third motor, the second motor, and the first motor are existing and directly purchased on the market, and have their own position sensors.

[0157] The roller drive device 52, the photoelectric sensor 449, the clamping drive device 41, the third motor, the second motor, the first motor and the position sensors respectively equipped are all connected to the PLC.

[0158] The individual position sensors are preset, thereby presetting the travel of the individual drive devices.

[0159] Then, the processing stations of the conveying device 500 during bending and flattening are preset.

[0160] The rolling motion trajectory of the rolling device 100 is preset. The rolling processing programs of different battery modules 200 are pre-set and stored on the PLC. When the rolling motion trajectory is preset, the plunger 445 is adjusted as needed to adjust the pressing member 43 to an ideal state.

[0161] During production, the tab 202 is installed on the mounting groove 201 of the battery module 200, and the battery module is placed on the tray 300. The conveying device 500 conveys the tray 300 to a predetermined position, thereby conveying the battery module 200 to a predetermined processing position. Bending is performed first, and after the tab is bent, the conveying device 500 conveys the battery module 200 to a predetermined rolling station for rolling operation.

[0162] Before rolling, the code scanning device 6 first scans the barcode or QR code on the battery module 200, and then feeds the collected information back to the PLC, which calls the corresponding rolling process program.

[0163] During rolling, the PLC controls the first motor, the second motor and the third motor to work, and adjusts the pressing member 43 and the roller 51 to a predetermined position, which is called rough positioning; and the pressing end surface of the pressing member 43 and the bent side surface of the pole ear 202 located in the mounting groove 201 are located in the same plane; the roller 51 and the other bent side surface of the pole ear 202 are opposite to each other and close to the bend root position, that is, the bend angle position;

[0164] Then, the PLC controls the piston rod of the clamping driving device 41 to extend along the X-axis direction to a predetermined position, so that the clamping member 43 clamps the tab 202; this is called precise positioning;

[0165] Next, the PLC controls the piston rod of the roller driving device 52 to extend along the X-axis to a predetermined position, so that the roller 51 presses the other side of the bent tab; this is called fine positioning;

[0166] Next, the PLC controls the second motor 36 of the Z-axis servo slide to operate, driving the first rolling part 5 to move up and down for rolling.

[0167] After completion, each drive device is reset and waits for the next tab to be processed.

[0168] For flattening of special-shaped tabs:

[0169] The processing procedure is also preset before production.

[0170] The PLC controls the first motor, the second motor, and the third motor to work, and adjusts the pressing member 43 and the roller 51 to reach a predetermined position for rough positioning; at this time, the upper and lower surfaces of the front end of the profiling flattening member 71 are directly opposite to the two planes to be pressed of the tab; in a specific implementation, the shape and size of the upper and lower surfaces of the front end of the profiling flattening member 71 are the same as the design size and shape of the two planes to be pressed of the tab;

[0171] Then the PLC controls the first motor of the X-axis servo slide 2 to work, drives the contour flattening member 71 to move along the X-axis direction, reaches a predetermined position, presses the two flat surfaces of the tab 202 to be pressed, holds for a certain period of time, and then resets to complete the processing and flattens the next special-shaped tab.

[0172] Although the specific implementation modes of the present invention are described above, those skilled in the art should understand that the specific implementation modes described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A flattening device for a bent tab, characterized in that: include Y-axis servo slide, An X-axis servo slide, the X-axis servo slide is slidably connected to the Y-axis servo slide; A supporting base plate, the supporting base plate is connected to the X-axis servo slide and is driven by the X-axis servo slide to move along the X-axis; A Z-axis servo slide, the Z-axis servo slide is fixedly connected to the supporting base plate; A pressing portion, the pressing portion being connected to the supporting bottom plate; A first rolling part, wherein the first rolling part comprises a roller and a roller driving device; the roller is rotatably connected to the roller driving device, and the rotating shaft of the roller is arranged along the Y-axis direction; the roller driving device is connected to the Z-axis servo slide and is driven by the Z-axis servo slide to move along the Z-axis; A code scanning device, the code scanning device is fixedly connected to the supporting base plate; A special-shaped flattening portion, wherein the special-shaped flattening portion comprises a profiling flattening member; the profiling flattening member is connected to the Z-axis servo slide, and the profiling flattening member is arranged along the X-axis direction; The special-shaped flattening portion also includes An extension plate, the extension plate is fixedly connected to the Z-axis servo slide and driven by the Z-axis servo slide to move up and down along the Z-axis; An optical axis, one end of the optical axis is fixedly connected to the extension plate and arranged along the X-axis direction; A flange plate, the flange plate is sleeved on the optical axis and fixedly connected to the extension plate; A spring, wherein the spring is sleeved on the optical axis; Wherein, the other end of the optical axis is fixedly connected to the contour flattening member; and the springs respectively press against the contour flattening member and the flange plate.

2. A flattening device for a bent tab as claimed in claim 1, characterized in that: The pressing portion includes A pressing drive device, the pressing drive device comprising a first fixed portion and a first movable portion movably connected to each other, and the first movable portion moves along the X-axis direction; A pressing drive mounting plate, wherein the first fixing portion is fixedly connected to the pressing drive mounting plate; and the pressing drive mounting plate is fixedly connected to the supporting bottom plate; A pressing member connected to the first movable part.

3. A flattening device for a bent tab as claimed in claim 2, characterized in that: The pressing part further includes a floating group, which is connected to the first movable part and arranged along the Y-axis direction; the pressing member is connected to the floating group.

4. A flattening device for a bent tab as claimed in claim 3, characterized in that: The floating group includes A propulsion plate, wherein a through hole and a first screw hole are formed on the propulsion plate along the Y-axis direction; the propulsion plate is fixedly connected to the first movable part, and the propulsion plate is arranged along the X-axis direction; A first fixing plate, wherein the first fixing plate is vertically fixedly connected to the pushing plate, and the first fixing plate is arranged along the Y direction; A guide rail, the guide rail is laid on the first fixed plate and arranged along the Y-axis direction; A slider, the slider is fixedly connected to the pressing member and slidably connected to the guide rail; A plunger, the plunger is locked into the first screw hole and abuts against the pressing member; spring; The bolt is provided with a second screw hole along the Y-axis direction; the bolt is sleeved with the spring and passes through the through hole and then locked into the second screw hole; A shading sheet, the shading sheet is fixedly connected to the pressing member; A photoelectric sensor is fixedly connected to the first fixing plate and is used to detect the position of the light shielding sheet.

5. The device for flattening a tab after bending according to claim 1, characterized in that: The roller driving device comprises A second fixed plate; the second fixed plate is connected to the Z-axis servo slide, and is driven by the Z-axis servo slide to move up and down along the Z-axis; An actuator, the actuator comprising a second fixed portion and a second movable portion movably connected to each other; the second fixed portion is fixedly connected to the second fixed plate; An adapter block is provided with an axial hole along the Y-axis direction, a bearing is embedded in the axial hole, and a rotating shaft is embedded in the inner ring of the bearing; the roller is fixedly sleeved on the rotating shaft; and the adapter block is fixedly connected to the second movable part.

6. The device for flattening a tab after bending according to claim 1, characterized in that: There are two first flattening parts; there is one special-shaped flattening part; there are two clamping parts; the two first flattening parts are symmetrically arranged, and the special-shaped flattening part is located in the middle of the two first flattening parts; the two clamping parts are symmetrically arranged on the outside of the two first flattening parts.

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