A double-station lithium battery winding machine

Abstract

The present invention discloses a double-station lithium battery winding machine, which includes a frame panel. On the frame panel, there are provided: a diaphragm unwinding mechanism, including two diaphragm unwinding components, which are used to correct the deviation of the two diaphragms of the lithium battery and send them to the winding mechanism; a pole piece unwinding mechanism, including two pole piece deviation-correcting unwinding components, which are used to unwind, measure the length, brush powder to remove iron, correct the deviation of the positive and negative pole pieces of the lithium battery, and feed the materials to the pole piece feeding and cutting mechanism; a pole piece feeding and cutting mechanism, including two feeding and cutting components, which are used to feed the unwound positive / negative pole piece to the winding mechanism, and cut off the positive / negative pole piece after the winding mechanism winds the positive / negative pole piece to a set length; a winding mechanism, including two plug-in winding components, which cooperate with the diaphragm pressing component, welding and cutting component, diaphragm threading component and residual coil finishing component arranged beside the winding mechanism to complete the pre-winding, inserting, welding and cutting and finishing of the lithium battery to complete the winding; an adhesive pasting mechanism, which is used for pasting adhesive at the tail of the lithium battery for finishing; and a blanking mechanism, which is used for detecting and blanking the lithium battery.

Description

Technical Field

[0001] The present invention relates to the technical field of battery equipment, and in particular to a double-station lithium battery winding machine. Background Art

[0002] In current lithium battery equipment, wound-type battery cores are widely used by lithium battery manufacturing enterprises in lithium batteries due to their advantages such as stable battery performance and high manufacturing efficiency, and they account for a large proportion of the market. Therefore, the demand for corresponding battery winding machines is also large.

[0003] However, in the winding machines for square lithium batteries on the existing market, due to the increasingly small volume of square lithium batteries and the increasingly high process precision requirements, the manufacturing of square lithium batteries is difficult, the equipment cost is high, and the yield rate is low. At the same time, the existing adapted winding machines have problems such as complex structure, complex operation, unstable production of lithium battery cores, and low yield rate.

[0004] Therefore, there is an urgent need in the market for a double-station lithium battery winding machine with low manufacturing cost, simple production operation, simple equipment maintenance, and reduced deformation of lithium batteries. Summary of the Invention

[0005] The technical problem solved by the present invention is to provide a double-station lithium battery winding machine for the problems in the above-mentioned prior art. This winding machine has low equipment cost, simple production operation, simple equipment maintenance, high processing efficiency of wound battery cores, and good quality of battery cores.

[0006] To solve the above technical problems, a technical solution adopted by the present invention is as follows: A double-station lithium battery winding machine includes a frame panel, and a diaphragm unwinding mechanism, a pole piece unwinding mechanism, a pole piece feeding and cutting mechanism, a winding mechanism, a tape sticking mechanism, and a blanking and detection mechanism are arranged on the frame panel; wherein,

[0007] The diaphragm unwinding mechanism includes two diaphragm unwinding components, which are used to correct the deviation and distribute the two diaphragms of the lithium battery to the winding mechanism.

[0008] The pole piece unwinding mechanism includes two pole piece deviation-correcting unwinding components, which are symmetrically arranged on both sides of one of the two diaphragm unwinding components, and are used to unwind, measure the length, brush powder to remove iron, correct the deviation of the positive and negative pole pieces of the lithium battery in sequence, and feed the materials to the pole piece feeding and cutting mechanism.

[0009] The pole piece feeding and cutting mechanism includes two feeding and cutting components, and the two feeding and cutting components are respectively docked with the matching pole piece deviation-correcting unwinding components, and are used to feed the positive pole piece / negative pole piece unwound by the matching pole piece deviation-correcting unwinding component to the winding mechanism, and cut off the positive pole piece / negative pole piece after the winding mechanism winds it to a set length.

[0010] The winding mechanism includes two plug-in winding assemblies, which rotate alternately between the feeding position and the unloading position of the separator, the positive electrode sheet and the negative electrode sheet, and cooperate with the separator pressing assembly, the welding and cutting assembly, the separator threading assembly and the residual winding finishing assembly installed beside the winding mechanism to complete the lithium battery pre-winding, sheet insertion, welding and cutting and finishing to complete the winding;

[0011] The gluing mechanism is installed beside the winding mechanism and is used to glue the tail of the lithium battery that has rotated to the unloading position and completed winding;

[0012] The unloading mechanism is connected with the winding mechanism and the gluing mechanism at the unloading position, and unloads the material after judging the winding failure and performing the short circuit test on the lithium battery.

[0013] As a further elaboration of the above technical solution:

[0014] In the above technical scheme, each diaphragm unwinding assembly includes a base fixedly mounted on the frame panel, a guide rail extending vertically along the frame panel is disposed on the base, a slide is disposed on the guide rail, the slide is fixedly connected to a linkage plate, the linkage plate is connected to the base through a ball screw and a linear guide sleeve assembly, the ball screw is also connected to a deviation correction motor disposed on the linkage plate through a coupling, the deviation correction motor can drive the linkage plate to drive the slide to slide along the guide rail, and a diaphragm unwinding expansion shaft that is movable and passes through the frame panel is nested on the slide. The diaphragm unwinding expansion shaft is connected to the expansion shaft cylinder on the linkage plate through an expansion shaft connector, and the diaphragm unwinding expansion shaft is also connected to the unwinding drive motor on the linkage plate through a synchronous wheel transmission pair; the linkage plate is also connected to the roller support plate through a sliding rod that movably penetrates the frame panel, and the roller support plate is equipped with a plurality of diaphragm rollers arranged in sequence along the diaphragm feeding direction and a diaphragm electrostatic rod installed through a bracket through bearings, and the roller support plate is also provided with a diaphragm tension roller that is connected to the drive cylinder through a pivoting swing arm and is used to tension the diaphragm.

[0015] In the above technical scheme, the two pole piece deviation correction and unwinding assemblies include a deviation correction and unwinding assembly, a position deviation correction assembly, a color mark detection assembly, a tension assembly, at least one powder brushing device, at least one iron removal device, a length measurement assembly and a process deviation correction assembly which are arranged in sequence along the pole piece feeding direction; wherein, the deviation correction and unwinding assembly includes a first base arranged on a frame panel, a first guide rail extending in a direction perpendicular to the frame panel is arranged on the first base, a first slide is arranged on the first guide rail, the first slide is fixedly connected to a follower plate, the follower plate is connected to the first base through a first ball screw and a first linear guide sleeve assembly, the first ball screw is also connected to a first deviation correction motor arranged on the follower plate through a first coupling, and the first The correction motor can drive the follower plate to drive the first slide to slide along the first guide rail, and a pole piece unwinding shaft that movably passes through the frame panel is embedded in the first slide. One end of the pole piece unwinding shaft is connected to the first unwinding motor arranged on the follower plate through a synchronous belt drive pair, and the other end is connected to the expansion shaft body that carries the pole piece coil. The first unwinding motor can drive the pole piece unwinding shaft to drive the expansion shaft body to rotate for matching unwinding; a tensioning cylinder is arranged at one axial end of the pole piece unwinding shaft, and the tensioning cylinder can drive the tensioning mandrel that passes through the pole piece unwinding shaft and movably docked with the expansion shaft body to insert / exit the expansion shaft body, so that the expansion shaft body tightens the pole piece coil, and the follower plate is also connected to a roller bracket with a pole piece roller through a first slide rod that movably passes through the frame panel.

[0016] In the above technical solution, the position deviation rectifying assembly includes a deviation rectifying frame installed vertically on the rack panel. Two deviation rectifying adjusting guide rods are fixedly arranged at the end of the deviation rectifying frame far from the rack panel. A deviation rectifying adjusting slider is arranged on the deviation rectifying adjusting guide rod. An installation plate for installing a deviation rectifying sensor is fixedly connected to the deviation rectifying adjusting slider. The deviation rectifying adjusting slider can also be driven by a differential head arranged on a deviation rectifying front positioning block to drive the deviation rectifying adjusting slider to slide along the deviation rectifying adjusting guide rod, so as to match and correct the position of the pole piece. The color mark detection assembly includes a detection bracket installed vertically on the rack panel. Two optical axes are fixedly arranged at the end of the detection bracket far from the rack panel. A detection mounting seat driven to slide by an adjusting screw arranged between the two optical axes is movably arranged on the optical axes. A color mark sensor is fixedly arranged on the detection mounting seat. The tension assembly includes a tension idler roller fixedly arranged on a roller passing frame. The roller passing frame is connected to a first driving cylinder fixedly arranged on the rack panel through a nested tension swing arm shaft and is in transmission connection. The first driving cylinder can drive the roller passing frame through the tension swing arm shaft to drive the tension idler roller to swing, so as to adjust the tension of the traction pole piece. Each of the brush powder devices includes a pole piece brush powder roller installed in a powder suction box and driven to rotate by a driving motor. The powder suction box is fixedly connected to the rack panel through a powder suction box bracket. A pressure roller is arranged on the rack panel at a position matching each powder suction box. The pressure roller presses the pole piece against the matching pole piece brush powder roller to perform brush powder and dust removal. Each of the iron removing devices includes a magnet installed in an iron removing seat. The iron removing seat is fixedly connected to the rack panel through a fixing column and a T-shaped mounting seat. The length measuring assembly includes a length measuring angle seat fixedly connected to the rack panel. The length measuring angle seat is connected to a pressure wheel seat for installing a length measuring pressure roller through a linear guide rod. The pressure wheel seat is also in transmission connection with a second driving cylinder fixedly arranged on the length measuring angle seat. A length measuring roller is also movably connected to the length measuring angle seat through a bearing at a position matching and facing the length measuring pressure roller. The length measuring roller is also connected to an encoder arranged at one axial end of it and used for measuring the unwinding length of the pole piece through a coupling. The process deviation rectifying assembly includes a deviation rectifying base fixedly arranged on the rack panel. The deviation rectifying base is connected to a deviation rectifying roller mounting seat for installing a process deviation rectifying roller through a deviation rectifying swing angle bearing. A rotating shaft is also arranged on the deviation rectifying base. A support is fixedly arranged on the rotating shaft. An electric ball screw transmission pair is arranged on the support and is in transmission connection with the deviation rectifying roller mounting seat through a screw connection head and a support shaft. The deviation rectifying roller mounting seat is also movably connected to the deviation rectifying base through a support plate, a cam bearing and a chute seat.

[0017] In the above technical solution, each of the two sheet feeding and cutting assemblies includes a sheet feeding base installed on the panel of the frame. A ball screw slide is provided on the sheet feeding base, and the ball screw slide is drivingly connected to a slide plate. A first ball screw slide is fixedly provided on the slide plate. The slide plate is further connected to a pole piece cutting assembly through a cutter connecting block. The first ball screw slide is connected to a sheet feeding clamp assembly that is movably docked with the pole piece cutting assembly through a sheet feeding connecting block. The ball screw slide drives the slide plate to drive the pole piece cutting assembly and the first ball screw slide to move, so that the pole piece cutting assembly, the sheet feeding clamp assembly, and the pole piece clamped by the sheet feeding clamp assembly move towards the feeding position of the winding mechanism. In cooperation with the first ball screw slide driving the sheet feeding clamp assembly to move, it is matched to make the sheet feeding clamp assembly clamp the positive / negative pole piece and move towards the corresponding pole piece cutting assembly to complete sheet feeding, and / or to make the pole piece cutting assembly cut off the positive / negative pole piece after the winding mechanism winds the positive / negative pole piece to a set length.

[0018] In the above technical solution, the sheet feeding clamp assembly includes a sheet feeding support plate connected to the sheet feeding connecting block. A fixed pressing block is fixedly provided on one side of the sheet feeding support plate in the width direction. The fixed pressing block is fixedly connected to a fixed sheet feeding clamp, and a pressing roller is installed through a support seat. A support block is fixedly provided on the other side of the sheet feeding support plate in the width direction. The support block is movably connected to a moving roller seat through a guide rod. A sheet feeding pressure roller that is directly opposite to the pressing roller in position and a moving sheet feeding clamp that is directly opposite to the fixed sheet feeding clamp in position are provided on the moving roller seat. The moving roller seat is also drivingly connected to a third driving cylinder provided on the sheet feeding support plate. The pole piece cutting assembly includes a cutter seat fixedly connected to the cutter connecting block. A fixed cutter seat for installing a fixed cutter is fixedly provided on the cutter seat. A fourth driving cylinder is provided at the end of the cutter seat facing away from the fixed cutter seat. The fourth driving cylinder is connected to a moving cutter seat through a linkage block in cooperation with two guide columns that penetrate through the cutter seat and extend to the side where the fixed cutter seat is provided. The moving cutter seat is movably connected to a cutter pressing plate that is directly opposite to the fixed cutter through a first guide rod in cooperation with a spring.

[0019] In the above technical scheme, the winding mechanism is matched with a triangular sheet feeder at the feeding position for introducing the positive electrode sheet, the negative electrode sheet and the diaphragm into the plug-in winding assembly. The two plug-in winding assemblies of the winding mechanism are installed on the revolution assembly. The revolution assembly includes a base seat fixed on the winding base, and a base turntable is assembled on the base seat through a bearing. The base turntable rotates through the meshing transmission of a transmission gear installed at one axial end thereof and a driving gear installed on the driving shaft of the revolution motor, and can drive the two plug-in winding assemblies nested on the base turntable to alternately move between the feeding position and the unloading position for receiving the diaphragm, the positive electrode sheet and the negative electrode sheet. The cam shaft is connected to the drive shaft by a first gear and a second gear is engaged with the first gear of the drive shaft by a first gear train, and the cam shaft is connected to the first gear of the drive shaft by a first gear train. The end of the ejector pin extending out of the winding needle shaft is connected to the shaft tail paddle wheel; the two transmission shafts are driven to rotate by the matching winding drive motor and drive the two plug-in winding assemblies to rotate relative to the base turntable; the base seat is provided with two pulling-out devices that are movably docked with the pulling-out block, and the pulling-out device includes a mounting plate fixedly mounted on the base seat and extending along the axial direction of the base turntable, and two first linear guide rails extending along the axial direction of the base turntable are provided on both sides of the width direction of the mounting plate, and a sliding plate is installed on the first linear guide rail, and a push-in cylinder is installed on the sliding plate perpendicular to the sliding plate, and the push-in cylinder is connected to the card seat through transmission, and the sliding plate is also connected to a mounting plate provided on The cam is connected to the drive mechanism of the second cam by the second guide rod, and the cam is connected to the drive mechanism by the second guide rod. The cam is connected to the drive mechanism by the second guide rod. The cam is connected to the drive mechanism by the second guide rod. The cam is connected to the drive mechanism by the second guide rod. The cam is connected to the drive mechanism by the second guide rod. The cam is connected to the drive mechanism by the second guide rod.The winding base is also provided with two winding needle pulling devices that are movably connected to the shaft tail dial wheel. The winding needle pulling device includes a first support frame fixed on the winding base, a second linear guide rail extending along the axial direction of the base turntable is provided on the first support frame, and a toggle block drivingly connected to a second pulling cylinder fixed on the first support frame is provided on the second linear guide rail. The toggle block is connected to a plug-in joint through a second guide rod. The plug-in joint is also provided with a plug-in push-pull plate for clamping with the shaft tail dial wheel, and the plug-in joint is also drivingly connected to the ejector cylinder fixed on the toggle block. ;

[0020] The diaphragm pressing assembly comprises a first diaphragm pressing assembly and a second diaphragm pressing assembly symmetrically arranged at the feeding position to match the two sides of the triangular sheet feeder, and the welding and cutting assembly, the diaphragm penetrating assembly and the residual roll finishing assembly are arranged in sequence around the outer periphery of the base seat; wherein the first diaphragm pressing assembly comprises a slide group seat fixedly connected to the frame panel, and at least one movable frame is movably penetrated on the slide group seat, and each movable frame is provided with a diaphragm pressing roller at one end matching its moving direction, and the other end is transmission-connected to the first cylinder fixed on the slide group seat; the second diaphragm pressing assembly comprises a pressure wheel support seat fixedly connected to the frame panel, and the pressure wheel support seat is movably connected to the slide group support block through a second linear guide rail, and the slide group support block is fixedly provided with a pressure diaphragm wheel at the end connected to the second linear guide rail and is connected to the pressure diaphragm roller through the first movable frame, and the slide group support block and the first movable frame are respectively connected to the pressure wheel support seat and the slide group support seat The second cylinder on the support block is connected in transmission; the welding and cutting assembly is used to cooperate with the winding of the plug-in winding assembly to fuse and weld the two layers of diaphragms pressed against the electrode sheets, the diaphragm penetration assembly is used to position the diaphragm in the winding needle, and cooperate with the plug-in winding assembly to complete the pre-winding of the lithium battery, and the residual winding finishing assembly is used to compress the diaphragm and the ends of the positive and negative electrode sheets of the wound lithium battery to complete the finishing of the lithium battery; the diaphragm penetration assembly, the welding and cutting assembly and the residual winding finishing assembly all include a supporting base fixed to the frame panel, the supporting base is movably connected to the mounting seat through a third linear guide rail, and the mounting seat is fixed with a diaphragm pressure roller / welding knife / finishing roller at the end away from the third linear guide rail, and the mounting seat is also connected in transmission with the third cylinder arranged on the supporting base and can be driven by it to slide along the third linear guide rail, so that the diaphragm pressure roller / welding knife / finishing roller moves toward the plug-in winding assembly to complete the pre-winding, welding and cutting and finishing.

[0021] In the above technical solution, the tape pasting mechanism includes an upper glue bottom plate fixedly connected to the frame panel. A tape pasting base is provided on the upper glue bottom plate. On one side in the length direction of the tape pasting base, a vertical plate extending along the direction perpendicular to the frame panel is fixedly provided. On one side wall of the vertical plate, a tape reel, a pre-tensioned tape assembly, a tape cutting assembly, and a tape pulling assembly are sequentially arranged along its extending direction. The tape cutting assembly can cut off a set length of tape pulled from the tape reel by the cooperation of the pre-tensioned tape assembly and the tape pulling assembly, and the tape is sent to the tail of the lithium battery that has been wound and rotated to the blanking position by an upper tape assembly arranged on the tape pasting base and matching the tape cutting assembly in the setting position for pasting; among them, the pre-tensioned tape assembly includes a plurality of tape passing rollers arranged perpendicular to the vertical plate. The plurality of tape passing rollers are arranged at intervals along the extending direction of the vertical plate. A pre-tensioning roller arranged on a pre-tensioning slider is also provided between two of the plurality of tape passing rollers. The pre-tensioning slider is sleeved on a vertically arranged guiding shaft and is in transmission connection with a pre-tensioning cylinder fixedly arranged on the vertical plate; the tape pulling assembly includes a first ball screw transmission pair fixedly arranged on the vertical plate. The first ball screw transmission pair is connected to a tape pulling seat through a screw connecting block. A pressing rubber roller is arranged at the end of the tape pulling seat close to the tape cutting assembly. A rubber clamping block in transmission connection with a rubber clamping cylinder is also movably arranged on the tape pulling seat; the tape cutting assembly includes a pressing rubber cylinder and a cutting rubber cylinder vertically fixedly arranged on the vertical plate. The pressing rubber cylinder can drive the tape pressing block to move vertically and cooperate with a tape blocking block arranged directly above it to press the pre-pulled tape. The cutting rubber cylinder can drive the cutting knife to move vertically and cut off the tape pressed by the tape pressing block and straightened by the tape pulling assembly; the upper tape assembly includes a fourth cylinder arranged at the other end in the length direction of the tape pasting base. The fourth cylinder is in transmission connection with a first mounting seat for installing a rotating arm cylinder. The rotating arm cylinder is pivotally connected to a tape pasting rotating block arranged on a U-shaped bracket through a joint bearing and a tape pasting rotating arm. The rotating arm cylinder can drive the tape pasting rotating block to swing relative to the U-shaped bracket and drive a glue sucking and pasting assembly arranged on it to suck the tape cut by the tape cutting assembly and send it to the tail of the lithium battery for pasting. The glue sucking and pasting assembly includes a tape pasting roller mounting seat fixedly arranged on the tape pasting rotating block. A vacuum adsorption tape pasting roller is assembled on the tape pasting roller mounting seat through a bearing. The vacuum adsorption tape pasting roller is also in transmission connection with a driving motor fixedly arranged on the U-shaped bracket through a second synchronous belt transmission pair and is driven by it to rotate for pasting.

[0022] In the above technical scheme, the unloading mechanism includes a cell taking assembly, a cell connecting assembly, a cell moving assembly, a core pressing short circuit testing assembly, a rejection assembly and a good product conveying assembly which are arranged on the frame panel and are sequentially connected along the unloading direction; wherein, the cell taking assembly includes a fourth linear guide rail extending along the unloading direction, and the fourth linear guide rail is connected to a pneumatic material taking clamping finger through a cylinder mounting plate, and a material taking clamp is arranged on the finger of the pneumatic material taking clamping finger, and the cylinder mounting plate is also connected to the sixth cylinder in transmission; the cell connecting assembly also includes a material receiving base, and the material receiving base A turning seat is fixed on the top, and the turning seat is movably connected to the second mounting seat through a turning shaft. A material receiving cylinder connected to the supporting frame is fixed on the second mounting seat, and the second mounting seat is also connected to the turning cylinder through a crank; the battery core moving assembly includes a fifth linear guide extending along the material unloading direction, an adapter plate is arranged on the fifth linear guide, and the adapter plate is connected to the material moving clamping frame through a guide column, and the material moving clamping frame is also connected to the seventh cylinder arranged on the adapter plate, and the adapter plate is also connected to the material moving cylinder arranged on the frame panel; the core pressing short circuit test The test assembly includes a first fixed plate and a second fixed plate connected by a connecting rod, a heating block is fixedly arranged on the first fixed plate, and a pole ear contact block driven by an eighth cylinder to move vertically is arranged next to the heating block, the second fixed plate is connected to a down-pressing heat-insulating seat on which the down-pressing heating block is installed through a down-pressing guide rod, the down-pressing heat-insulating seat is also transmission-connected to a down-pressing cylinder arranged on the second fixed plate, the down-pressing heat-insulating seat is also movably connected to the pole ear down-pressing block through a third guide rod and a spring, the down-pressing heating block is matched and opposite to the heating block in position, and the pole ear down-pressing block is positioned with the pole ear contact The contact blocks are matched and aligned; the rejection assembly includes a rejection hanging plate fixedly connected to the second fixed plate through a connecting plate, and the rejection hanging plate is equipped with a nozzle sliding block that can slide along the vertical unloading direction through a round rod, and the nozzle sliding block is transmission-connected to the ninth cylinder arranged on the rejection hanging plate, and the nozzle sliding block is also connected to the nozzle mounting plate for installing the vacuum nozzle through a telescopic guide rod, and the nozzle mounting plate is also transmission-connected to the material-taking cylinder arranged on the nozzle sliding block; the good product conveying assembly is a conveyor belt docked with the core short-circuit test assembly, and is used to convey good lithium batteries for unloading.

[0023] The beneficial effects of the present invention are: first, the winding machine of the present invention has a reasonable structural layout and is easy to operate; second, the winding mechanism of the winding machine of the present invention adopts a two-winding station structure, which is simple in structure and has a reasonable distribution of station functions compared to the three-winding station structure on the market, effectively reducing processing and manufacturing costs; third, the plug-in winding assembly of the winding machine of the present invention adopts a coaxial double winding needle setting, wherein the first winding needle is a main winding needle with the function of clamping the diaphragm, and the second winding needle is an auxiliary winding needle for the insert, which can be opened or closed according to the production needs of the battery cell process. The introduction of the insert can effectively reduce the "S" deformation of the lithium battery and improve the yield rate of the wound lithium battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a perspective view of the winding machine of the present invention;

[0025] Figure 2 is a front view of the winding machine of the present invention;

[0026] Figure 3 is a perspective view of the diaphragm unwinding mechanism of the winding machine of the present invention;

[0027] Figure 4 is a perspective view of the pole piece unwinding mechanism of the winding machine of the present invention;

[0028] Figure 5 is a perspective view of the deviation rectifying unwinding assembly of the present invention;

[0029] Figure 6 is a perspective view of the process deviation rectifying assembly of the present invention;

[0030] Figure 7 is a perspective view of the pole piece feeding and cutting mechanism of the present invention;

[0031] Figure 8 is a perspective view of the winding mechanism of the present invention;

[0032] Figure 9 is another perspective view of the winding mechanism of the present invention;

[0033] Figure 10 is a partial exploded view of the plug-in winding assembly of the present invention;

[0034] Figure 11 is a perspective view of the thimble insertion and extraction assembly of the present invention;

[0035] Figure 12 is an assembly drawing of the diaphragm pressing assembly, welding and cutting assembly, diaphragm threading assembly and residual roll finishing assembly of the present invention;

[0036] Figure 13 is a perspective view of the adhesive pasting mechanism of the present invention;

[0037] Figure 14 is a perspective view of the blanking mechanism of the present invention. Detailed implementation manners

[0038] The present invention will be further described in detail below with reference to the accompanying drawings.

[0039] Appendix Figures 1-14 Illustrates a specific embodiment of a double-station lithium battery winding machine of the present invention. Refer to the appendix Figures 1-14, a double-station lithium battery winding machine. This winding machine is a panel-type winding machine used for winding the cores of square lithium batteries. The illustrated winding machine can automatically complete a series of actions required for winding the battery cores, such as unwinding, tension control, deviation correction, winding, defect detection and rejection, and blanking, so as to realize the full-automatic winding of lithium battery cores. This winding machine improves the main mechanisms or components such as 'pole piece feeding and cutting', 'winding', and 'core end sticking', reduces the equipment cost, is easy to operate, has stable core production, and a high yield rate.

[0040] Attached Figures 1-14 A double-station lithium battery winding machine shown in the figure includes: a frame panel 100, on which a diaphragm unwinding mechanism 200, a pole piece unwinding mechanism 300, a pole piece feeding and cutting mechanism 400, a winding mechanism 500, a sticking mechanism 600, and a blanking and detection mechanism 700 are provided. On the outer circumference of the winding mechanism 500, a diaphragm pressing component 800, a welding and cutting component 900, a diaphragm threading component 110, and a residual coil end finishing component 120 for assisting winding are also provided; among them,

[0041] The diaphragm unwinding mechanism 200 includes two diaphragm unwinding components 21. In this embodiment, the two diaphragm unwinding components 21 are arranged at a 90° position. That is, the diaphragm unwinding component 21 on the left is horizontally arranged on the frame panel 100, while the diaphragm unwinding component 21 on the right is vertically arranged, and the matching unwinding directions are also horizontal and vertical. The two diaphragm unwinding components 21 cooperate to correct the deviation of the two diaphragms of the lithium battery and send them to the winding mechanism 500.

[0042] The electrode sheet unwinding mechanism 300 includes two electrode sheet deviation rectifying and unwinding assemblies 31, which are symmetrically arranged on both sides of one of the two diaphragm unwinding assemblies 21. In this embodiment, the two electrode sheet deviation rectifying and unwinding assemblies 31 are symmetrically arranged with the diaphragm unwinding assembly 21 on the right, that is, the vertically arranged diaphragm unwinding assembly 21 as the symmetry center. The electrode sheet unwinding assemblies 31 are used to unwind, measure the length, brush powder to remove iron, correct the deviation and feed the positive and negative electrode sheets of the lithium battery to the electrode sheet feeding and cutting mechanism 400 in sequence. In this embodiment, each electrode sheet deviation rectifying and unwinding assembly 31 includes a deviation rectifying and unwinding assembly 32, a position deviation rectifying assembly 33, a color mark detection assembly 34, a tension assembly 35, at least one powder brushing device 36, at least one iron removing device 37, a length measuring assembly 38 and a process deviation rectifying assembly 39 arranged in sequence along the electrode sheet feeding direction. The deviation rectifying and unwinding assembly 32 is used to unwind the electrode sheet roll and stretch it along the position deviation rectifying assembly 33, the color mark detection assembly 34, the tension assembly 35, the powder brushing device 36, the iron removing device 37, the length measuring assembly 38 and the process deviation rectifying assembly 39. The position deviation rectifying assembly 33 is used to correct the position of the electrode sheet unwound from the deviation rectifying and unwinding assembly 32, so as to adjust the position of the electrode sheet during the stretching process. The color mark detection assembly 34 is used for color mark identification to determine the unwinding process, the unwinding position or the electrode sheet identification. The tension assembly 35 is used for tension adjustment during electrode sheet unwinding. The powder brushing device 36 is used for static electricity elimination and dust removal. The iron removing device 37 is used for adsorbing iron filings. The length measuring assembly 38 is used to measure the length of the unwound electrode sheet, so as to cooperate with the subsequent electrode sheet feeding and cutting mechanism 400 to cut off the electrode sheet after feeding the electrode sheet with a set length, and the process deviation rectifying assembly 39 is used to adjust the position during the transmission process before the electrode sheet is transported to the electrode sheet feeding and cutting mechanism 400, so that the electrode sheet can be smoothly fed into the electrode sheet feeding and cutting mechanism 400;

[0043] The electrode sheet feeding and cutting mechanism 400 includes two feeding and cutting assemblies 41, and the two feeding and cutting assemblies 41 are respectively docked with the matching electrode sheet deviation rectifying and unwinding assemblies 31. In practice, they are arranged at the front end of the feeding direction of the matching process deviation rectifying assembly 39, so as to dock with the electrode sheets unwound by the electrode sheet deviation rectifying and unwinding mechanism 400, and are used to feed the positive electrode sheet / negative electrode sheet unwound by the matching electrode sheet deviation rectifying and unwinding assembly 31 to the winding mechanism 500, and cut off the positive electrode sheet / negative electrode sheet after the winding mechanism 500 winds it to a set length, so as to insert the electrode sheet during the lithium battery winding process;

[0044] The winding mechanism 500 includes two pluggable winding components 51. The two pluggable winding components 51 alternately rotate between the feeding position 001 and the discharging position 002 for receiving the separator, the positive electrode sheet and the negative electrode sheet, and cooperate with the separator pressing component 800, the welding and cutting component 900, the separator piercing component 110 and the residual coil finishing component 120 arranged beside the winding mechanism 500 to complete the pre-winding, inserting, welding and cutting and finishing of the lithium battery to complete the winding. In practice, according to the requirements and the setting of the winding process, it can be selected whether to perform inserting. Selecting inserting can solve the "S" deformation problem caused during the core pressing process of the lithium battery;

[0045] The glue pasting mechanism 600 is arranged beside the winding mechanism 500 and is used for pasting glue on the tail of the lithium battery that rotates to the discharging position 002 and has completed winding, that is, pasting a tape on the tail of the wound lithium battery to make the tail in a formed bonding state;

[0046] The discharging mechanism 700 is docked with the winding mechanism 500 and the glue pasting mechanism 600 at the discharging position 002, and discharges the lithium battery after judging the winding defect and performing a short-circuit test on the lithium battery. It should be noted that in practice, the winding defect is judged by checking the appearance of the wound lithium battery, and the short-circuit test is completed by measuring the temperature through a thermostat after short-circuiting the two electrode sheets of the wound battery core.

[0047] The above-mentioned winding machine has a reasonable structure layout and is convenient to operate. The winding mechanism adopts a two-winding station structure, which has a simpler structure, a reasonable distribution of station functions compared with the three-winding station structure on the market, and effectively reduces the processing and manufacturing costs. The pluggable winding component 51 of the winding machine adopts a coaxial double winding needle setting. The first winding needle is the main winding needle with the function of clamping the separator by the winding needle, and the second winding needle is the auxiliary winding needle for inserting. It can be selected to be turned on or off according to the production needs of the battery core process. Introducing inserting can effectively reduce the "S" deformation of the lithium battery and improve the yield rate of the wound lithium battery.

[0048] Refer to the appendix Figures 1-3In this embodiment, each diaphragm unwinding component 21 includes a base 22 fixedly mounted on the frame panel 100, and a guide rail 23 extending vertically along the frame panel 100 is provided on the base 22, and a slide 24 is movably mounted on the guide rail 23, and the slide 24 is fixedly connected to a linkage plate 25, and the linkage plate 25 is connected to the base 22 through a ball screw 26 and a linear guide sleeve assembly 27, and the ball screw 26 is also connected to a deviation correction motor 29 provided on the linkage plate 25 through a coupling 28, and the deviation correction motor 29 can drive the linkage plate 25 to drive the slide 24 to slide along the guide rail 23, and a diaphragm unwinding expansion shaft 210 movably penetrating the frame panel 100 is nested on the slide 24, and the ... The expansion shaft 210 is connected to the expansion shaft cylinder 212 (in this embodiment, the expansion shaft cylinder 212 is a thin cylinder) on the linkage plate 25 through the expansion shaft connector 211. The diaphragm unwinding expansion shaft 210 is also connected to the unwinding drive motor 214 on the linkage plate 25 through the synchronous wheel transmission pair 213; the linkage plate 25 is also connected to the roller support plate 217 through a slide bar 216 that movably penetrates the frame panel 100. The roller support plate 217 is equipped with a plurality of diaphragm rollers 218 arranged in sequence along the diaphragm feeding direction and a diaphragm electrostatic rod 220 installed through a bracket 219 through a bearing (not numbered in the figure). The roller support plate 217 is also provided with a drive cylinder 222 that is connected to the drive cylinder 222 through a pivot swing arm 221 and is used for The diaphragm tension roller 223 is used to tension the diaphragm; during the deviation correction and unwinding, the unwinding drive motor 214 drives the diaphragm unwinding expansion shaft 210 to rotate, so that the diaphragm coil tightened on the diaphragm unwinding expansion shaft 210 is unwound along the diaphragm roller 218, the diaphragm electrostatic rod 220 and the diaphragm tension roller 223, and cooperates with the deviation correction motor 29 to drive the linkage plate 25 and the slide seat 24 to move relative to the base 22 for deviation correction, so that the diaphragm unwinding expansion shaft 210 and the roller support plate 217 move for deviation correction, and the diaphragm deviation correction and unwinding are matched to be sent to the winding mechanism 500. It should be noted that the diaphragm unwinding expansion shaft 210 includes a coaxially arranged expansion shaft and a sleeve, and the sleeve is connected to the unwinding drive motor 214 through a synchronous belt drive pair 213, so that The diaphragm unwinding expansion shaft 210 is driven to rotate as a whole, thereby unwinding, and the expanding shaft is connected to the expansion shaft cylinder 212 through the expansion shaft connector 211 provided at one axial end thereof, and can be driven by the expansion shaft cylinder 212 to move axially, and the expansion shaft device provided at the other axial end of the diaphragm unwinding expansion shaft 210 is matched to expand or contract, thereby winding and tightening the diaphragm; and the deflection correction unwinding of the diaphragm is achieved by the deflection correction motor 29 driving the linkage plate 25 and the slide seat 24 to move relative to the base 22, so that the diaphragm roller 218, the diaphragm electrostatic rod 220 and the diaphragm tension roller 223 move in a matched manner to complete the deflection correction; the structure of the diaphragm deflection correction unwinding component 21 can refer to the following structural description of the deflection correction unwinding component 32 and the corresponding drawings.

[0049] Reference appendix Figures 1-2 and appendix Figures 4-6In this embodiment, the deflection correcting unwinding component 32 includes a first base 311 fixedly mounted on the rack panel 100, a first guide rail 312 extending in a direction perpendicular to the rack panel 100 is provided on the first base 311, a first slide 313 is movably mounted on the first guide rail 312, the first slide 313 is fixedly connected to a follower plate 314, the follower plate 314 is connected to the first base 311 through a first ball screw 315 and a first linear guide sleeve assembly 316, the first ball screw 315 is also connected to a first deflection correcting motor 318 provided on the follower plate 314 through a first coupling (not shown in the drawings), the first deflection correcting motor 318 can drive the follower plate 314 to drive the first slide 313 to slide along the first guide rail 312, and a movable through-hole is nested on the first slide 313 The pole piece unwinding shaft 319 of the rack panel 100 has one end connected to the first unwinding motor 3111 arranged on the follower plate 314 through a synchronous belt transmission pair 310, and the other end is connected to the expansion shaft body 3112 that carries the pole piece coil. The first unwinding motor 3111 can drive the pole piece unwinding shaft 319 to drive the expansion shaft body 3112 to rotate for matching unwinding; a tensioning cylinder 3113 is provided at one axial end of the pole piece unwinding shaft 319, and the tensioning cylinder 3113 can drive the tensioning mandrel 3114 that passes through the pole piece unwinding shaft 319 and is movably connected to the expansion shaft body 3112 to insert / exit the expansion shaft body 3112, so that the expansion shaft body 3112 tightens the pole piece coil, and the follower plate 314 is also connected to a roller bracket 3117 provided with a pole piece roller 3116 through a first slide rod 3115 that movably passes through the rack panel 100. The cam 332 is a kind of camshaft that is used to move the load-bearing parts of the machine body 310, and the cam 333 is a kind of camshaft that is used to move the load-bearing parts of the machine body 310, and the cam 333 is a kind of camshaft that is used to move the load-bearing parts of the machine body 310.In this embodiment, the color mark detection component 34 includes a detection bracket 341 installed on the vertical rack panel 100. Two optical axes 342 are fixedly arranged at the end of the detection bracket 341 away from the rack panel 100. A detection mounting seat 344 driven to slide by an adjustment screw 343 arranged between the two optical axes 342 is movably installed on the optical axes 342, and a color mark sensor 345 is fixedly arranged on the detection mounting seat 344; in this embodiment, the tension component 35 includes a tension idler roller 352 fixedly arranged on the idler roller frame 351. The idler roller frame 352 is in transmission connection with a first driving cylinder (not shown in the drawing, actually arranged on the back of the rack panel 100) fixedly arranged on the rack panel 100 through a nested tension swing arm shaft 353 on the rack panel 100. The first driving cylinder can drive the idler roller frame 351 through the tension swing arm shaft 353 to drive the tension idler roller 353 to swing so as to adjust the tension of the drawn pole piece; in this embodiment, each brush powder device 36 includes a pole piece brush powder roller 362 installed in the powder suction box 361 and driven to rotate by a driving motor (not shown in the drawing). The powder suction box 361 is fixedly connected to the rack panel 100 through a powder suction box bracket 363. A pressure roller 364 is arranged at the position of the rack panel 100 corresponding to each powder suction box 361. The pressure roller 364 presses the pole piece against the corresponding pole piece brush powder roller 362 for brush powder dust removal; in this embodiment, each iron removal device 37 includes a magnet (not shown in the drawing) installed in the iron removal seat 371. The iron removal seat 371 is fixedly connected to the rack panel 100 through a fixing column 372 and a T-shaped mounting seat 373; in this embodiment, the length measurement component 38 includes a length measurement angle seat 381 fixedly connected to the rack panel 100. The length measurement angle seat 381 is connected to a pressure wheel seat 384 for installing a length measurement pressure roller 383 through a linear guide rod 382. The pressure wheel seat 384 is also in transmission connection with a second driving cylinder 385 fixedly arranged on the length measurement angle seat 381. A length measurement roller 386 that is in position and matches and faces the length measurement pressure roller 383 is also movably connected to the length measurement angle seat 381 through a bearing (not labeled in the drawing). The length measurement roller 383 is also connected to an encoder 388 arranged at one axial end of it and used for measuring the unwinding length of the pole piece through a coupling 387; the length measurement pressure roller 383 presses the pole piece against the length measurement roller 383 to drive the length measurement roller 383 to rotate, and the encoder 388 measures the number of rotations of the length measurement roller 383 to measure the unwinding length of the pole piece;In this embodiment, the process deviation rectification component 39 includes a deviation rectification base 391 fixed on the frame panel 100. The deviation rectification base 391 is connected to a deviation rectification roller mounting seat 394 for mounting a process deviation rectification roller 393 through a deviation rectification swing angle bearing 392. A rotating shaft 395 is further provided on the deviation rectification base 391. A support 396 is fixed on the rotating shaft 395. An electric ball screw transmission pair 399 is provided on the support 396 and is in transmission connection with the deviation rectification roller mounting seat 394 through a screw connection head 397 and a support shaft 398. The deviation rectification roller mounting seat 394 is also movably connected to the deviation rectification base 391 through a support plate 3910, a cam bearing 3911 and a chute seat 3912. The electric ball screw transmission pair 399 drives the deviation rectification roller mounting seat 394 to swing with the deviation rectification swing angle bearing 3911 as the rotating shaft. With the guidance of the support plate 3910, the cam bearing 3911 and the chute seat 3912, the deviation rectification roller mounting seat 394 drives the two process deviation rectification rollers 393 to swing to perform process deviation rectification on the pole piece.

[0050] Reference attachment Figures 1-2 And attachment Figure 7, in this embodiment, both of the two sheet feeding and cutting assemblies 41 include a sheet feeding base 42 installed on the frame panel 100. A ball screw slide 43 is arranged on the sheet feeding base 42. The ball screw slide 43 is drivingly connected to a slide plate 44. A first ball screw slide 45 is fixedly arranged on the slide plate 44. The slide plate 44 is further connected to a pole piece cutting assembly 47 through a cutter connecting block 46. The first ball screw slide 45 is connected to a sheet feeding clamp assembly 49 that is movably docked with the pole piece cutting assembly 47 through a sheet feeding connecting block 48. The ball screw slide 43 drives the slide plate 44 to drive the pole piece cutting assembly 47 and the first ball screw slide 45 to move, so that the pole piece cutting assembly 47, the sheet feeding clamp assembly 49 and the pole piece clamped by the sheet feeding clamp assembly 49 move towards the feeding position 001 of the winding mechanism 500. In cooperation with the first ball screw slide 45 driving the sheet feeding clamp assembly 49 to move, it is matched to make the sheet feeding clamp assembly 49 clamp the positive / negative pole piece and move towards the corresponding pole piece cutting assembly 47 to complete sheet feeding, and / or make the pole piece cutting assembly 47 cut off the positive / negative pole piece after the winding mechanism 500 winds the positive / negative pole piece to a set length.In this embodiment, the sheet feeding clamp assembly 49 includes a sheet feeding support plate 491 connected to the sheet feeding connection block 48. On one side of the sheet feeding support plate 491 in the width direction, a fixed pressing block 492 is fixedly arranged. The fixed pressing block 492 is fixedly connected to a fixed sheet feeding clamp 493, and a pressing roller 495 is installed through a support seat 494. On the other side of the sheet feeding support plate 491 in the width direction, a support block 496 is fixedly arranged. The support block 496 is movably connected to a moving roller seat 498 through a guide rod 497. On the moving roller seat 498, there are a sheet feeding pressing roller 499 that is opposite to the pressing roller 495 in position and a moving sheet feeding clamp 4910 that is opposite to the fixed sheet feeding clamp 493 in position. The moving roller seat 498 is also in transmission connection with a third driving cylinder 4911 arranged on the sheet feeding support plate 491. The third driving cylinder 4911 drives the moving roller seat 498 to drive the sheet feeding pressing roller 499 and the moving sheet feeding clamp 4910 to move towards the pressing roller 495 and the fixed sheet feeding clamp 493, so as to clamp the imported positive electrode sheet / negative electrode sheet in a matching manner. In this embodiment, the electrode sheet cutting assembly 47 includes a cutter seat 471 fixedly connected to the cutter connecting block 46. On the cutter seat 471, a fixed cutter seat 473 for fixedly installing a fixed cutter 472 is fixedly arranged. At the end of the cutter seat 471 facing away from the fixed cutter seat 473, a fourth driving cylinder 474 is arranged. The fourth driving cylinder 474 is connected to a moving cutter seat 477 through a linkage block 475 and two guide columns 476 that penetrate through the cutter seat 471 and extend to the side where the fixed cutter seat 473 is arranged. The moving cutter seat 477 is movably connected to a cutter pressing plate 479 that is opposite to the fixed cutter 472 in position through a first guide rod 478 and a spring (not labeled in the drawing). The fourth driving cylinder 474 drives the moving cutter seat 477 to drive the cutter pressing plate 479 to move relative to the fixed cutter 472, so as to cut off the positive electrode sheet / negative electrode sheet wound to a set length, and match the electrode sheet feeding and cutting mechanism 400 to cut off the positive electrode sheet / negative electrode sheet after the winding mechanism 500 winds the positive electrode sheet / negative electrode sheet to the set length.

[0051] Refer to the appendix Figures 1-2 and the appendix Figures 8-11, in this embodiment, a triangular sheet inserter 52 for introducing the positive electrode sheet, negative electrode sheet and separator into the plug-in winding assembly 51 is provided at the feeding position 001 that matches the winding mechanism 500. The two plug-in winding assemblies 51 are arranged perpendicular to the frame panel 100. The two plug-in winding assemblies 51 of the winding mechanism 500 are arranged on the revolution assembly 53. The revolution assembly 53 includes a base seat 532 fixed on the winding base 531. A base turntable 533 is assembled on the base seat 532 through a bearing (not shown in the drawing). The base turntable 533 rotates by meshing and driving with a driving gear (not shown in the drawing) arranged on the driving shaft of the revolution motor 535 through a transmission gear 534 arranged at one axial end thereof, and can drive the two plug-in winding assemblies 51 nested on the base turntable 533 to alternately rotate between the feeding position 001 for receiving the separator, positive electrode sheet and negative electrode sheet and the discharging position 002; Each of the plug-in winding assemblies 51 includes a winding needle 513 connected to the winding needle shaft 511 through a winding needle connector 512, an inserting sheet 514 inserted through the winding needle shaft 511 and butt-connected through the winding needle connector 512, a winding needle core shaft 515 and a thimble 516 movably inserted through the winding needle core shaft 515. The winding needle shaft 511 is movably assembled on the base turntable 533 through a shaft sleeve (not labeled in the drawing). A first transmission gear 5110 is provided on the winding needle shaft 511 of the two plug-in winding assemblies 51. The first transmission gear 5110 is meshed and connected with a driven gear 541 arranged on two coaxially arranged transmission shafts 54. The transmission shaft 541 is also connected to a matching winding driving motor 55 through a first synchronous belt transmission pair 53. In practice, the two driven gears 541 do not interfere with each other during transmission. When the driven gear 541 meshes with the first transmission gear 5110, transmission occurs, causing the winding needle shaft 511 to rotate. The transmission shaft 54 that drives the corresponding driven gear 541 to rotate is also connected to a different winding driving motor 55. In this way, the corresponding plug-in winding assembly 51 can be driven to rotate and wind at both the feeding position 001 and the discharging position 002 through the winding driving motor 55. Of course, at the discharging position, the plug-in winding assembly 51 does not wind the lithium battery, but does not cooperate with other components for subsequent processing of winding the lithium battery, such as: diaphragm welding and cutting, end sticking and gluing, etc.; A draw block 517 is also provided on each winding needle shaft 511. A shaft tail wheel 518 is provided at the end of the winding needle core shaft 515 extending out of the winding needle shaft 511. The end of the thimble 516 extending out of the winding needle shaft 511 is connected to a shaft tail dial 519; The two transmission shafts 54 are driven to rotate by a matching winding driving motor 55 and drive the two plug-in winding assemblies 51 to rotate relative to the base turntable 533.In this embodiment, two extraction devices 56 that are movably docked with the extraction block 517 are provided on the base seat 532. The extraction device 56 includes a mounting plate 561 fixed on the base seat 532 and extending along the axial direction of the base turntable 533. On both sides in the width direction of the mounting plate 561, two first linear guide rails 562 extending along the axial direction of the base turntable 533 are provided. A sliding plate 563 is installed on the first linear guide rails 562. A jacking cylinder 564 is vertically installed on the sliding plate 563. The jacking cylinder 564 is drivingly connected to a clamping seat 565. The sliding plate 563 is also drivingly connected to an extraction cylinder 567 provided on the mounting plate 561. The jacking cylinder 564 drives the clamping seat 565 to move towards the extraction block 517 of the plug-in winding assembly 51 located at the feeding position 001 or the discharging position 002 and is clamped with it. In cooperation with the extraction cylinder 567 driving the sliding plate 563 to drive the jacking cylinder 564 to slide along the two first linear guide rails 562, the winding needles 513 of the plug-in winding assembly 51 rotated and transmitted to the feeding position 001 and the discharging position 002 are inserted into or withdrawn from the front pre-shrinking nozzle shaft assembly 57 located at the feeding position 001 and the discharging position 002. The front pre-shrinking nozzle shaft assembly 57 is used to position the winding needles 513 during winding. In this embodiment, two thimble extraction devices 58 that are movably docked with the shaft tail dial 518 are provided on the winding base 531. Each thimble extraction device 58 includes a support frame 581 fixed on the winding base 531. The support frame 581 is movably connected to a thimble push-pull seat 583 through a push-pull sliding block 582. The thimble push-pull seat 583 is also drivingly connected to a first extraction cylinder 584 fixed on the support frame 581 and drives it to move along the axial direction of the base turntable 533. A thimble rod 585 for clamping the shaft tail dial 518 is movably installed on the thimble push-pull seat 583. The thimble rod 585 is also drivingly connected to a thimble cylinder 587 vertically installed on the thimble push-pull seat 583 and capable of driving it to be clamped with the shaft tail dial 518 through a connecting seat 586. The thimble cylinder 587 drives the thimble rod 585 to be clamped with the shaft tail dial 518. In cooperation with the first extraction cylinder 584 driving the thimble push-pull seat 583 to move along the axial direction of the base turntable 533, the thimble 516 is driven to move along its axial direction to be inserted into or withdrawn from the winding needle 513, and the matching winding needle is opened or clamped.The winding base 531 is also provided with two winding needle pulling devices 59 that are movably connected to the shaft tail dial wheel 519. The winding needle pulling device 59 includes a first support frame 591 fixed on the winding base 531, and a second linear guide rail 592 extending along the axial direction of the base turntable 533 is provided on the first support frame 591. The second linear guide rail 592 is provided with a toggle block 594 that is transmission-connected to a second pulling cylinder 593 fixed on the first support frame 591. The toggle block 594 is connected to a plug-in joint 596 through a second guide rod 595. The plug-in joint The head 596 is also provided with a plug push-pull plate 597 for engaging with the shaft tail dial wheel 519, and the plug connector 596 is also connected to the ejector cylinder 598 fixed on the toggle block 594; the ejector cylinder 598 drives the plug push-pull plate 597 to engage with the shaft tail dial wheel 519, cooperates with the second pull-out cylinder 593 to drive the toggle block 594 to slide along the second linear guide rail 592, and matches to make the plug 514 move along its axial direction and insert the winding needle 513 into the wound lithium battery or pull the plug 514 out of the wound square lithium battery. ;

[0052] Reference Figures 1-2 and attached Figure 12In this embodiment, the diaphragm pressing assembly 800 includes a first diaphragm pressing assembly 81 and a second diaphragm pressing assembly 82 symmetrically arranged at the feeding position 001 to match the two sides of the triangular sheet feeder 52, and the welding and cutting assembly 900, the diaphragm penetration assembly 110 and the residual roll finishing assembly 12 are arranged in sequence around the outer periphery of the base seat 532; wherein, the first diaphragm pressing assembly 81 includes a slide seat 811 fixedly connected to the frame panel 100, and at least one movable frame 812 is movably penetrated on the slide seat 811, and each movable frame 812 is provided with a diaphragm pressing roller 813 at one end matching its moving direction, and the other end is transmission-connected to the first cylinder 814 fixed on the slide seat 811; the second diaphragm pressing assembly 8 2 includes a pressure wheel support seat 821 fixedly connected to the frame panel 100, the pressure wheel support seat 821 is movably connected to the slide block 823 through the second linear guide rail 822, the end of the slide block 823 away from the second linear guide rail 822 is fixedly provided with a top-pressing diaphragm wheel 824 and connected to a top-pressing diaphragm roller 826 through a first movable frame 825, the slide block 823 and the first movable frame 825 are respectively connected to the second cylinder 827 provided on the pressure wheel support seat 821 and the slide block 823; the first cylinder 814 drives the top-pressing diaphragm roller 813 to move toward the triangular film feeder 52, and matches the first diaphragm top-pressing assembly 81 to press the diaphragm delivered by the diaphragm unwinding assembly 21 against the electrode sheet, and the second ... The cylinder 827 drives the slider support block 823 and the first movable frame 825 to move, so that the matching top-pressing diaphragm roller 813 moves toward the triangular sheet feeder 52, and the matching second diaphragm top-pressing component 82 presses the diaphragm delivered by the other diaphragm unwinding component 21 onto the electrode; in this embodiment, the welding and cutting component 900 is used to cooperate with the winding of the plug-in winding component 5151 to melt and weld the two layers of diaphragms pressed against the electrode. In practice, the diaphragm is cut and welded at the same time, and the diaphragms on both sides are carried out separately. When the winding reaches a certain rear end, the welding and cutting component 900 first melts and welds the diaphragm on one side of the lithium battery being wound, and then the plug-in winding component 5151 drives the lithium battery being wound to rotate, so that The end face of the diaphragm to be melted and welded is turned inside, and the end face corresponding to the welding and cutting assembly 900 is melted and welded; the diaphragm-penetrating assembly 110 is used to position the diaphragm in the winding needle 513, and cooperate with the plug-in winding assembly 5151 to complete the pre-winding of the lithium battery. In practice, the pre-winding process is located before the welding and cutting, that is, the diaphragm-penetrating assembly 110 positions and presses the front end of the diaphragm, so that the plug-in winding assembly 51 clamps the diaphragm and the positive and negative electrodes for winding. The so-called pre-winding is to first wind the wound lithium battery to a certain thickness according to the winding requirements, and then choose to insert the electrode; the residual winding tailing assembly 120 is used to press the ends of the diaphragm and the positive and negative electrodes of the wound lithium battery to complete the lithium battery tailing;Referring to the accompanying drawings, the membrane penetration assembly 110, the welding and cutting assembly 900 and the residual roll finishing assembly 120 have substantially the same structure. Specifically, the membrane penetration assembly 110, the welding and cutting assembly 900 and the residual roll finishing assembly 120 all include a support base 91 fixedly connected to the frame panel 100, the support base 91 is movably connected to the mounting seat 93 through the third linear guide rail 92, and the mounting seat 93 is fixedly provided with a membrane pressure roller 11 / welding knife 94 / finishing roller 12 at the end away from the connection with the third linear guide rail 92. The mounting seat 93 is also transmission-connected to the third cylinder 95 provided on the support base 91 and can be driven by the third cylinder 95 to slide along the third linear guide rail 92, so that the membrane pressure roller 11 / welding knife 94 / finishing roller 12 moves toward the plug-in winding assembly 51 to complete pre-rolling, welding and cutting and finishing. ;

[0053] Reference Figures 1-2 and attached Figure 13, in this embodiment, the tape pasting mechanism 600 includes a glue application bottom plate 61 fixedly connected to the frame panel 100. A tape pasting base 62 is provided on the glue application bottom plate 61. On one side in the length direction of the tape pasting base 62, a vertical plate 63 extending in the direction perpendicular to the frame panel 100 is fixedly provided. On one side wall of the vertical plate 63, a tape reel 64, a pre-tensioned tape assembly 65, a tape cutting assembly 66, and a tape pulling assembly 67 are sequentially arranged along its extending direction. The tape cutting assembly 66 can cut off a set length of tape pulled from the tape reel 64 by the cooperation of the pre-tensioned tape assembly 65 and the tape pulling assembly 67, and the upper tape assembly 68 provided on the tape pasting base 62 and matching the tape cutting assembly 66 in the setting position sends the tape to the tail of the lithium battery that has been wound and rotated to the blanking position 002 for pasting; among them, the pre-tensioned tape assembly 65 includes a plurality of tape passing rollers 651 arranged perpendicular to the vertical plate 63. The plurality of tape passing rollers 651 are arranged at intervals along the extending direction of the vertical plate 63. A pre-tensioned roller 653 provided on a pre-tensioned slider 652 is further arranged between two of the plurality of tape passing rollers 651. The pre-tensioned slider 652 is sleeved on a vertically arranged guide shaft 654 and is in transmission connection with a pre-tensioned cylinder 655 fixedly arranged on the vertical plate 63. The pre-tensioned cylinder 655 drives the pre-tensioned slider 652 to drive the pre-tensioned roller 653 to slide vertically, and cooperates with the traction of the tape passing rollers 651 to pre-pull the tape material roll to a set length; in practice, because the tape of the tape material roll has a certain viscosity, directly pulling out and cutting the tape from the tape material roll will cause the tape to be stretched, and when pasted on the end of the battery cell, it will cause unstable fitting and insufficient tension. During pre-tensioning, the tape is wound around the tape passing rollers 651. The pre-tensioned cylinder 655 drives the pre-tensioned slider 652 to drive the pre-tensioned roller 653 to move vertically downward. The pre-tensioned roller 653 drives the tape to be pulled downward, matching to make the tape material roll unwind and pull out a section of tape. The pulled tape is in a relaxed state, so as to facilitate the tape pulling assembly 67 to clamp the tape, and to avoid the tape being stretched (expanded outward) due to excessive tension during the tape pulling by the tape pulling assembly 67 and the tape cutting by the tape cutting assembly 66. After being pasted on the end of the lithium battery, it will cause incomplete pasting and insufficient adhesive tension; in this embodiment, the tape pulling assembly 67 includes a first ball screw transmission pair 671 fixedly arranged on the vertical plate 63. The first ball screw transmission pair 671 is connected to a tape pulling seat 673 through a screw connecting block 672. A pressure roller 674 is arranged at the end of the tape pulling seat 673 close to the tape cutting assembly 66. A clamping block 676 in transmission connection with a clamping cylinder 675 is also movably arranged on the tape pulling seat 673. The clamping cylinder 675 can drive the clamping block 676 to move towards the pressure roller 674, and cooperate with the first ball screw transmission pair 671 to drive the tape pulling seat 673 to move towards the tape cutting assembly 66, matching to clamp the tape pre-pulled by the pre-tensioned tape assembly 65 from the tape cutting assembly 66 and pull the tape to a set length;In this embodiment, the tape cutting assembly 66 includes a glue pressing cylinder 661 and a glue cutting cylinder 662 vertically fixed on the vertical plate 63. The glue pressing cylinder 661 can drive the tape pressing block 663 to move vertically and cooperate with the tape stop block 664 arranged directly above it to press and stop the pre-pulled tape. The glue cutting cylinder 662 can drive the glue cutting knife 665 to move vertically and cut off the tape straightened by the tape pressing block 663 in cooperation with the tape pulling assembly 67. In this embodiment, the upper tape assembly 68 includes a fourth cylinder 681 arranged at the other end of the glue sticking base 62 in the length direction. The fourth cylinder 681 is drivingly connected to a first mounting seat 683 for mounting a rotary arm cylinder 682. The rotary arm cylinder 682 is pivotally connected to a glue sticking rotary block 687 arranged on a U-shaped bracket 686 through a joint bearing 684 and a glue sticking rotary arm 685. The rotary arm cylinder 682 can drive the glue sticking rotary block 687 to swing relative to the U-shaped bracket 686 and drive the glue sucking and sticking assembly 688 arranged thereon to suck and send the tape cut by the tape cutting assembly 66 to the tail of the lithium battery for sticking. The glue sucking and sticking assembly 688 includes a glue sticking roller mounting seat 689 fixed on the glue sticking rotary block 687. A vacuum adsorption glue sticking roller 6810 is assembled on the glue sticking roller mounting seat 689 through bearings. The vacuum adsorption glue sticking roller 6810 is also drivingly connected to a driving motor 6812 fixed on the U-shaped bracket 686 through a second synchronous belt transmission pair 6811 and is driven by it to rotate for sticking. In practice, the driving motor 6812 drives the vacuum adsorption glue sticking roller 6810 to rotate, so that the vacuum adsorption glue sticking roller 6810 rolls on the end of the wound lithium battery to stick the tape. The swing of the glue sucking and sticking assembly 688 is to complete the operation of taking the tape from the tape cutting assembly 66 to a position matching the tail end of the lithium battery. The vacuum adsorption glue sticking roller 6810 uses a vacuum adsorption method to adsorb the tape and then transfer it.

[0054] Refer to the attached Figures 1-2 and the attached Figure 14In this embodiment, the unloading mechanism 700 includes a cell taking assembly 71, a cell connecting assembly 72, a cell moving assembly 73, a core pressing short circuit test assembly 74, a rejection assembly 75 and a good product conveying assembly 76, which are arranged on the rack panel 100 and are sequentially connected along the unloading direction; wherein, the cell taking assembly 71 includes a fourth linear guide rail 711 extending along the unloading direction, and the fourth linear guide rail 711 is connected to a material taking pneumatic clamping finger 713 through a cylinder mounting plate 712, and a material taking clamp 714 is arranged on the finger of the material taking pneumatic clamping finger 713, and the cylinder mounting plate 712 is also connected to a sixth cylinder 715 transmission connection, the sixth cylinder 715 can drive the material-picking pneumatic clamping finger 713 to move (the moving direction is the material-cutting direction), cooperate with it to drive the material-picking clamp 714 to open or close, match the material-picking from the material-cutting position 002 and transfer it to the supporting rack 721 of the battery cell assembly 72; the battery cell assembly 72 also includes a material-picking base 722, and a flip seat 723 is fixed on the material-picking base 722, and the flip seat 723 is movably connected to a second mounting seat 725 through a flip shaft 724, and a material-picking cylinder 726 that is transmission-connected to the supporting rack 721 is fixed on the second mounting seat 725. The mounting seat 725 is also connected to the flip cylinder 728 through the crank 727. The receiving cylinder 726 can drive the bracket 721 to move vertically, matching the lithium battery carried by the battery cell assembly 71. The flip cylinder 723 can drive the second mounting seat 725 to flip relative to the flip seat 723, and drive the receiving cylinder 726 and the bracket 721 to flip and dump out the poorly wound lithium batteries (the poor winding is detected by the matching visual inspection system set by the winding machine); the battery cell moving assembly 73 includes a fifth linear guide rail 731 extending along the blanking direction. The rail 731 is arranged on the frame panel 100, and the fifth linear guide rail 731 is provided with an adapter plate 732, and the adapter plate 732 is connected to the material moving clamp frame 734 through a guide column 733, and the material moving clamp frame 734 is also connected to the seventh cylinder 735 provided on the adapter plate 732, and the adapter plate 732 is also connected to the material moving cylinder 736 provided on the frame panel 100, and the seventh cylinder 735 drives the material moving clamp frame 734 to move vertically, and cooperates with the material moving cylinder 736 to drive the adapter plate 732 to move, so as to transfer the lithium battery from the bracket 721 to the core short circuit test assembly 74;The core pressing short-circuit test assembly 74 includes a first fixed plate 742 and a second fixed plate 743 connected by a connecting rod 741. A heating block 744 is fixedly arranged on the first fixed plate 742. A tab contact block 746 driven to move vertically by an eighth cylinder 745 is also arranged beside the heating block 744. The second fixed plate 743 is connected to a lower pressing heat insulation seat 749 for installing a lower pressing heating block 748 through a lower pressing guide rod 747. The lower pressing heat insulation seat 749 is also in transmission connection with a lower pressing cylinder 7410 arranged on the second fixed plate 746. The lower pressing heat insulation seat 749 is also movably connected to a tab lower pressing block 7412 through a third guide rod 7411 and a spring (not labeled in the drawing). The lower pressing heating block 748 is positionally matched and aligned with the heating block 744. The tab lower pressing block 7412 is positionally matched and aligned with the tab contact block 746. The lower pressing cylinder 7410 drives the lower pressing heat insulation block 749 to drive the lower pressing heating block 748 and the tab lower pressing block 7412 to move vertically, matching to press the core of the wound lithium battery and conduct a short-circuit test on the connection between the lithium battery and the tab. The rejection assembly 75 includes a rejection hanging plate 752 fixedly connected to the second fixed plate 743 through a connecting piece 751. The rejection hanging plate 752 is assembled with a nozzle sliding block 754 capable of sliding along the vertical blanking direction through a round bar 753. The nozzle sliding block 754 is in transmission connection with a ninth cylinder 755 arranged on the rejection hanging plate 752. The nozzle sliding block 754 is also connected to a nozzle mounting plate 758 for installing a vacuum nozzle 757 through a telescopic guide rod 756. The nozzle mounting plate 758 is also in transmission connection with a material taking cylinder 759 arranged on the nozzle sliding block 754. The material taking cylinder 759 drives the nozzle mounting plate 758 to drive a plurality of vacuum nozzles 757 to move vertically, cooperating with the ninth cylinder 755 to drive the nozzle sliding block 754 to move, matching to suck the defective products that have completed the core pressing and short-circuit test into the rejection box. And the good product conveying assembly 76 is a conveyor belt docked with the core pressing short-circuit test assembly 74 and is used to convey the good lithium batteries for blanking.;

[0055] The above does not impose any limitation on the technical scope of the present invention. Any modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A double-station lithium battery winding machine, characterized in that , including a frame panel, on which a diaphragm unwinding mechanism, a pole piece unwinding mechanism, a pole piece feeding and cutting mechanism, a winding mechanism, a gluing mechanism and a material unloading detection mechanism are provided; wherein, The diaphragm unwinding mechanism includes two diaphragm unwinding components, which are used to correct the deviation of the two diaphragms of the lithium battery and distribute them to the winding mechanism. Each diaphragm unwinding component includes a base fixed on the frame panel, the base is provided with a guide rail extending along the vertical frame panel, the guide rail is provided with a slide seat, the slide seat is fixedly connected to a linkage plate, the linkage plate is connected to the base through a ball screw and a linear guide sleeve assembly, the ball screw is also connected to the correction motor provided on the linkage plate through a coupling, the correction motor can drive the linkage plate to drive the slide seat to slide along the guide rail, and the slide seat is nested with a movable through A diaphragm unwinding expansion shaft passing through the frame panel is connected to the expansion shaft cylinder on the linkage plate through an expansion shaft connector, and is also connected to the unwinding drive motor on the linkage plate through a synchronous wheel transmission pair; the linkage plate is also connected to the roller support plate through a sliding rod that movably passes through the frame panel, and a plurality of diaphragm rollers arranged in sequence along the diaphragm feeding direction and a diaphragm electrostatic rod installed through a bracket are mounted on the roller support plate through bearings, and a diaphragm tension roller is also provided on the roller support plate, which is connected to the drive cylinder through a pivoting swing arm and is used to tension the diaphragm; The pole piece unwinding mechanism comprises two pole piece deviation correction unwinding assemblies, which are symmetrically arranged on both sides of one of the two diaphragm unwinding assemblies, and are used to sequentially unwind, measure length, brush powder, remove iron, and correct deviation of the positive and negative pole pieces of the lithium battery, and feed them to the pole piece feeding and cutting mechanism. The two pole piece deviation correction unwinding assemblies each comprise a deviation correction unwinding assembly, a position deviation correction assembly, a color mark detection assembly, a tension assembly, at least one powder brushing device, at least one iron removal device, a length measurement assembly, and a process deviation correction assembly, which are sequentially arranged along the pole piece feeding direction; wherein, The deflection correcting unwinding assembly includes a first base arranged on a frame panel, a first guide rail extending in a direction perpendicular to the frame panel is arranged on the first base, a first slide is arranged on the first guide rail, the first slide is fixedly connected to a follower plate, the follower plate is connected to the first base through a first ball screw and a first linear guide sleeve assembly, the first ball screw is also connected to a first deflection correcting motor arranged on the follower plate through a first coupling, the first deflection correcting motor can drive the follower plate to drive the first slide to slide along the first guide rail, and a movable member is nested on the first slide that penetrates the A pole piece unwinding shaft of the rack panel, one end of the pole piece unwinding shaft is connected to a first unwinding motor arranged on a follower plate through a synchronous belt drive pair, and the other end is connected to an expansion shaft body carrying a pole piece coil, and the first unwinding motor can drive the pole piece unwinding shaft to drive the expansion shaft body to rotate, so as to match the unwinding; a tensioning cylinder is arranged at one axial end of the pole piece unwinding shaft, and the tensioning cylinder can drive a tensioning mandrel that penetrates the pole piece unwinding shaft and movably docks with the expansion shaft body to insert / exit the expansion shaft body, so that the expansion shaft body tightens the pole piece coil, and the follower plate is also connected to a roller bracket provided with a pole piece roller through a first sliding rod that movably penetrates the rack panel; The position correction component comprises a correction frame installed vertically on the frame panel, two correction adjustment guide rods are fixedly arranged on the end of the correction frame away from the frame panel, a correction adjustment slider is arranged on the correction adjustment guide rod, a mounting plate on which a correction sensor is fixedly installed is connected to the correction adjustment slider, and the correction adjustment slider can also be driven by a differential head installed on the front positioning block of the correction to drive the correction adjustment slider to slide along the correction adjustment guide rod to match the position correction of the pole piece; The color mark detection assembly comprises a detection bracket installed vertically on the frame panel, two optical axes are fixedly arranged on the end of the detection bracket away from the frame panel, a detection mounting seat driven to slide by an adjustment screw arranged between the two optical axes is movably arranged on the optical axis, and a color mark sensor is fixedly arranged on the detection mounting seat; The tension assembly includes a tension roller fixed on a roller frame, and the roller frame is connected to a first driving cylinder fixed on the frame panel by being nested with a tension swing arm shaft on the frame panel, and the first driving cylinder can drive the tension roller to swing through the tension swing arm shaft to adjust the tension of the pulled pole piece; Each of the powder brushing devices comprises a pole piece powder brushing roller installed in a powder suction box and driven to rotate by a driving motor, the powder suction box is fixedly connected to the frame panel through a powder suction box bracket, and a pressure roller is provided at a position matching each powder suction box on the frame panel, and the pressure roller presses the pole piece against the matching pole piece powder brushing roller to perform powder brushing and dust removal; Each of the iron removal devices comprises a magnet installed in an iron removal seat, and the iron removal seat is fixedly connected to the frame panel through a fixing column and a T-shaped mounting seat; The length measuring assembly comprises a length measuring angle seat fixedly connected to the frame panel, the length measuring angle seat is connected to a pressure roller seat on which a length measuring pressure roller is installed through a linear guide rod, the pressure roller seat is also drivingly connected to a second driving cylinder fixed on the length measuring angle seat, the length measuring angle seat is also movably connected to a length measuring roller that is matched with the length measuring pressure roller in position through a bearing, and the length measuring roller is also connected to an encoder arranged at one axial end thereof through a coupling and used to measure the unwinding length of the pole piece; The process correction component includes a correction base fixedly mounted on the frame panel, the correction base is connected to a correction roller mounting seat for mounting a process correction roller through a correction swing angle bearing, a rotating shaft is also arranged on the correction base, a support is fixedly arranged on the rotating shaft, an electric ball screw transmission pair is arranged on the support, which is transmission-connected to the correction roller mounting seat through a screw connector and a support shaft, and the correction roller mounting seat is also movably connected to the correction base through a support plate, a cam bearing and a slide seat; The electrode sheet feeding and cutting mechanism comprises two feeding and cutting assemblies, which are respectively connected to the matching electrode sheet deviation correction and unwinding assemblies, and are used to feed the positive electrode sheet / negative electrode sheet unwound by the matching electrode sheet deviation correction and unwinding assemblies to the winding mechanism, and cut the positive electrode sheet / negative electrode sheet after the winding mechanism winds the positive electrode sheet / negative electrode sheet to a set length; The winding mechanism includes two plug-in winding assemblies, which rotate alternately between the feeding position and the unloading position of the separator, the positive electrode sheet and the negative electrode sheet, and cooperate with the separator pressing assembly, the welding and cutting assembly, the separator threading assembly and the residual winding finishing assembly installed beside the winding mechanism to complete the lithium battery pre-winding, sheet insertion, welding and cutting and finishing to complete the winding; The gluing mechanism is installed beside the winding mechanism and is used to glue the tail of the lithium battery that has rotated to the unloading position and completed winding; The unloading mechanism is connected with the winding mechanism and the gluing mechanism at the unloading position, and unloads the material after judging the winding failure and short-circuit test of the lithium battery.

2. The double-station lithium battery winding machine according to claim 1, characterized in that , the two sheet feeding and cutting assemblies both include a sheet feeding base mounted on the frame panel, a ball screw slide is arranged on the sheet feeding base, a slide is connected to the slide via a transmission mechanism, a first ball screw slide is fixed on the slide, the slide is also connected to the pole piece cutting assembly via a cutter connecting block, the first ball screw slide is connected to a sheet feeding clamp assembly movably docked with the pole piece cutting assembly via a sheet feeding connecting block; the ball screw slide drives the slide to drive the pole piece cutting assembly and the first ball screw slide to move, so that the pole piece cutting assembly, the sheet feeding clamp assembly and the pole piece clamped by the sheet feeding clamp assembly move toward the feeding position of the winding mechanism, cooperates with the first ball screw slide to drive the sheet feeding clamp assembly to move, matches the sheet feeding clamp assembly to clamp the positive pole piece / negative pole piece and move toward the matching pole piece cutting assembly to complete the sheet feeding, and / or makes the pole piece cutting assembly cut after the winding mechanism winds the positive pole piece / negative pole piece to a set length.

3. The double-station lithium battery winding machine according to claim 2, characterized in that The sheet feeding clamp assembly includes a sheet feeding support plate connected to a sheet feeding connecting block, a fixed pressure block is fixedly arranged on one side of the sheet feeding support plate in the width direction, the fixed pressure block is fixedly connected to the fixed sheet feeding clamp, and a pressure roller is installed through a support seat, a support block is fixedly arranged on the other side of the sheet feeding support plate in the width direction, the support block is movably connected to a movable roller seat through a guide rod, a sheet feeding pressure roller which is opposite to the pressure roller in position and a movable sheet feeding clamp which is opposite to the fixed sheet feeding clamp in position, the movable roller seat is also connected to a sheet feeding roller which is opposite to the fixed sheet feeding clamp in position, and the movable roller seat is connected to a sheet feeding roller which is opposite to the fixed sheet feeding clamp in position. The third driving cylinder on the sheet feeding support plate is transmission connected; the pole sheet cutting assembly includes a cutter seat fixedly connected to the cutter connecting block, a fixed cutter seat for installing a fixed cutter is fixed on the cutter seat, and a fourth driving cylinder is arranged at the end of the cutter seat facing away from the fixed cutter seat, and the fourth driving cylinder is connected to the movable cutter seat through a linkage block in cooperation with two guide columns that penetrate the cutter seat and extend to the side where the fixed cutter seat is arranged, and the movable cutter seat is movably connected to the cutter pressure plate that is opposite to the fixed cutter in position through a first guide rod and a spring.

4. The double-station lithium battery winding machine according to claim 1, characterized in that , a triangular sheet inserter for introducing the positive electrode sheet, negative electrode sheet and separator into the plug-in winding assembly is provided at the position of the winding mechanism corresponding to the feeding position. The two plug-in winding assemblies of the winding mechanism are arranged on the revolution assembly. The revolution assembly includes a base seat fixed on the winding base. A base turntable is assembled on the base seat through a bearing. The base turntable is rotated by meshing transmission with a driving gear arranged on the driving shaft of the revolution motor through a transmission gear arranged at one axial end of the base turntable, and can drive the two plug-in winding assemblies nested on the base turntable to alternately rotate between the feeding position and the discharging position for receiving the separator, positive electrode sheet and negative electrode sheet; Each of the plug-in winding assemblies includes a winding needle connected to the winding needle shaft through a winding needle connector, an inserting sheet penetrating through the winding needle shaft and butt-jointing and penetrating through the winding needle connector, a winding needle core shaft and a thimble movably penetrating through the winding needle core shaft. The winding needle shaft is movably assembled on the base turntable through a shaft sleeve. The winding needle shafts of the two plug-in winding assemblies are provided with first transmission gears. The first transmission gears are meshed and connected with driven gears arranged on two coaxially arranged transmission shafts. The transmission shafts are also in transmission connection with the corresponding winding driving motors through first synchronous belt transmission pairs. Each of the winding needle shafts is further provided with a pulling block. A shaft tail wheel is arranged at the end of the winding needle core shaft extending out of the winding needle shaft. The end of the thimble extending out of the winding needle shaft is connected with a shaft tail dial; The two transmission shafts are driven to rotate by the corresponding winding driving motors and drive the two plug-in winding assemblies to rotate relative to the base turntable; Two pulling devices are provided on the base seat and are in movable butt-joint with the pulling blocks. Each pulling device includes a mounting plate fixed on the base seat and extending along the axial direction of the base turntable. Two first linear guide rails extending along the axial direction of the base turntable are arranged on both sides in the width direction of the mounting plate. A sliding plate is arranged on the first linear guide rails. A jacking cylinder is arranged on the sliding plate perpendicular to the sliding plate. The jacking cylinder is in transmission connection with a clamping seat. The sliding plate is also in transmission connection with a pulling cylinder arranged on the mounting plate;The winding base is provided with two plug-in extraction devices which are movably connected to the shaft tail wheel. The plug-in extraction device includes a first support frame fixedly arranged on the winding base, a second linear guide rail extending along the axial direction of the base turntable is provided on the first support frame, a toggle block which is transmission-connected to a second extraction cylinder fixedly arranged on the first support frame is provided on the second linear guide rail, the toggle block is connected to the plug-in joint through a second guide rod, the plug-in joint is also provided with a plug-in push-pull plate for clamping with the shaft tail wheel, and the plug-in joint is also transmission-connected to the plug-in cylinder fixedly arranged on the toggle block The winding base is also provided with two winding needle pulling devices that are movably connected to the shaft tail dial wheel. The winding needle pulling device includes a first support frame fixed on the winding base, a second linear guide extending along the axial direction of the base turntable is provided on the first support frame, and a toggle block drivingly connected to a second pulling cylinder fixed on the first support frame is provided on the second linear guide. The toggle block is connected to a plug-in joint through a second guide rod, and a plug-in joint is also provided with a plug-in push-pull plate for clamping with the shaft tail dial wheel, and the plug-in joint is also drivingly connected to the ejector cylinder fixed on the toggle block. ; 5. The double-station lithium battery winding machine according to claim 4, characterized in that The diaphragm pressing assembly includes a first diaphragm pressing assembly and a second diaphragm pressing assembly symmetrically arranged at the feeding position to match the two sides of the triangular feeder, and the welding and cutting assembly, the diaphragm penetration assembly and the residual roll finishing assembly are arranged in sequence around the outer periphery of the base seat; wherein, The first diaphragm pressing assembly comprises a slide group seat fixedly connected to the frame panel, at least one movable frame is movably provided on the slide group seat, and one end of each movable frame matching its moving direction is provided with a diaphragm pressing roller, and the other end is transmission connected to the first cylinder fixed on the slide group seat; the second diaphragm pressing assembly comprises a pressure wheel support seat fixedly connected to the frame panel, the pressure wheel support seat is movably connected to the slide group support block through a second linear guide rail, the end of the slide group support block away from the connection with the second linear guide rail is fixed with a diaphragm pressing wheel and is connected to the diaphragm pressing roller through the first movable frame, the slide group support block and the first movable frame are respectively transmission connected to the second cylinder arranged on the pressure wheel support seat and the slide group support block; The welding and cutting assembly is used to cooperate with the winding of the plug-in winding assembly to fuse and weld the two layers of diaphragms pressed against the electrode sheets, the diaphragm penetration assembly is used to position the diaphragm in the winding needle, and cooperate with the plug-in winding assembly to complete the pre-winding of the lithium battery, and the residual winding finishing assembly is used to compress the diaphragm and the ends of the positive and negative electrode sheets of the wound lithium battery to complete the finishing of the lithium battery; the diaphragm penetration assembly, the welding and cutting assembly and the residual winding finishing assembly all include a supporting base fixed to the frame panel, the supporting base is movably connected to the mounting seat through a third linear guide rail, and the mounting seat is fixed with a diaphragm pressure roller / welding knife / finishing roller at the end away from the third linear guide rail, and the mounting seat is also transmission-connected to the third cylinder arranged on the supporting base and can be driven by it to slide along the third linear guide rail, so that the diaphragm pressure roller / welding knife / finishing roller moves toward the plug-in winding assembly to complete the pre-winding, welding and cutting and finishing.

6. The double-station lithium battery winding machine according to claim 1, characterized in that , The tape pasting mechanism includes a glue application bottom plate fixedly connected to the frame panel. A tape pasting base is arranged on the glue application bottom plate. On one side in the length direction of the tape pasting base, a vertical plate extending in the direction perpendicular to the frame panel is fixedly arranged. On one side wall of the vertical plate, a tape reel, a pre-tensioning tape assembly, a tape cutting assembly, and a tape pulling assembly are successively arranged along its extending direction. The tape cutting assembly can cut off a set length of tape pulled from the tape reel by the cooperation of the pre-tensioning tape assembly and the tape pulling assembly, and the tape is sent by an upper tape assembly arranged on the tape pasting base and matching the tape cutting assembly in the setting position to the tail of the lithium battery that has been wound and rotated to the blanking position for pasting; among them, The pre-tensioning tape assembly includes a plurality of tape passing rollers arranged perpendicular to the vertical plate. The plurality of tape passing rollers are arranged at intervals along the extending direction of the vertical plate. A pre-tensioning roller arranged on a pre-tensioning slider is also arranged between two of the plurality of tape passing rollers. The pre-tensioning slider is sleeved on a vertically arranged guiding shaft and is in transmission connection with a pre-tensioning cylinder fixedly arranged on the vertical plate; The tape pulling assembly includes a first ball screw transmission pair fixedly arranged on the vertical plate. The first ball screw transmission pair is connected to a tape pulling seat through a screw connecting block. A pressure rubber roller is arranged at the end of the tape pulling seat close to the tape cutting assembly. A rubber clamping block in transmission connection with a rubber clamping cylinder is also movably arranged on the tape pulling seat; The tape cutting assembly includes a pressure rubber cylinder and a cutting rubber cylinder vertically fixedly arranged on the vertical plate. The pressure rubber cylinder can drive the tape pressing block to move vertically and cooperate with a tape blocking block arranged directly above it to press the pre-pulled tape. The cutting rubber cylinder can drive the cutting rubber knife to move vertically and cut off the tape that is pressed by the tape pressing block and straightened by the cooperation of the tape pulling assembly; The upper tape assembly includes a fourth cylinder arranged at the other end in the length direction of the tape pasting base. The fourth cylinder is in transmission connection with a first mounting seat for installing a rotating arm cylinder. The rotating arm cylinder is pivotally connected to a tape pasting rotating block arranged on a U-shaped bracket through a joint bearing and a tape pasting rotating arm. The rotating arm cylinder can drive the tape pasting rotating block to swing relative to the U-shaped bracket and drive a glue sucking and pasting assembly arranged on it to suck the tape cut by the tape cutting assembly and send it to the tail of the lithium battery for pasting. The glue sucking and pasting assembly includes a tape pasting roller mounting seat fixedly arranged on the tape pasting rotating block. A vacuum adsorption tape pasting roller is assembled on the tape pasting roller mounting seat through a bearing. The vacuum adsorption tape pasting roller is also in transmission connection with a driving motor fixedly arranged on the U-shaped bracket through a second synchronous belt transmission pair and is driven to rotate for pasting; 7. The double-station lithium battery winding machine according to claim 1, characterized in that , The blanking mechanism includes a battery cell taking assembly, a battery cell receiving assembly, a battery cell transferring assembly, a core pressing and short-circuit testing assembly, a rejection assembly, and a good product conveying assembly that are successively arranged in butt joint along the blanking direction on the frame panel; among them, The battery cell taking assembly includes a fourth linear guide rail extending along the blanking direction. A pneumatic finger for taking is connected to the fourth linear guide rail through a cylinder mounting plate. A taking clip is arranged on the finger of the pneumatic finger for taking. The cylinder mounting plate is also in transmission connection with a sixth cylinder; The cell connection assembly comprises a support frame and a receiving base, a flip seat is fixedly arranged on the receiving base, the flip seat is movably connected to a second mounting seat via a flip shaft, a receiving cylinder is fixedly arranged on the second mounting seat which is transmission-connected to the support frame, and the second mounting seat is also connected to the flip cylinder via a crank; The cell material transfer assembly includes a fifth linear guide rail extending in the material feeding direction, an adapter plate is provided on the fifth linear guide rail, the adapter plate is connected to the material transfer clamp frame through a guide column, the material transfer clamp frame is also in driving connection with a seventh cylinder provided on the adapter plate, and the adapter plate is also in driving connection with the material transfer cylinder provided on the frame panel; The pressure core short circuit test assembly comprises a first fixed plate and a second fixed plate connected by a connecting rod, a heating block is fixedly arranged on the first fixed plate, a pole ear contact block driven by an eighth cylinder to move vertically is also arranged beside the heating block, the second fixed plate is connected to a down-pressing heat-insulating seat on which the down-pressing heating block is installed through a down-pressing guide rod, the down-pressing heat-insulating seat is also transmission-connected to a down-pressing cylinder arranged on the second fixed plate, the down-pressing heat-insulating seat is also movably connected to the pole ear down-pressing block through a third guide rod and a spring, the down-pressing heating block is matched and opposite to the heating block in position, and the pole ear down-pressing block is matched and opposite to the pole ear contact block in position; The reject assembly includes a reject hanging plate fixedly connected to the second fixed plate through a connecting piece, the reject hanging plate is equipped with a nozzle sliding block that can slide along the vertical feeding direction through a round rod, the nozzle sliding block is drivingly connected to a ninth cylinder arranged on the reject hanging plate, the nozzle sliding block is also connected to a nozzle mounting plate for mounting a vacuum nozzle through a telescopic guide rod, and the nozzle mounting plate is also drivingly connected to a material taking cylinder arranged on the nozzle sliding block; The good product conveying assembly is a conveyor belt connected to the core short circuit testing assembly and is used to convey the good product lithium batteries.

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