Pole piece rolling composite production line and process

Abstract

The invention relates to the technical field of pole piece production equipment, in particular to a pole piece rolling composite production line and process, and the pole piece rolling composite production line comprises an extrusion rolling device, a thinning composite device, a drying device and a winding device which are arranged in sequence. The extrusion rolling device comprises an extrusion mechanism, a rolling mechanism and a tension trimming mechanism, the roller spacing of the rolling mechanism is adjustable, and the tension trimming mechanism can adjust tension and trim; the thinning compounding device comprises a thinning mechanism, a thinning compounding mechanism and a metal foil unwinding mechanism, the thinning uniformity of the thinning mechanism is improved through a gap eliminating device, the rigidity of the thinning compounding mechanism is enhanced through a supporting roller, the compounding position and pressure are accurately controlled through an oil cylinder and a bending cylinder, and secondary thinning of materials and compounding of the materials and the metal foil are achieved; the drying device adopts a U-shaped structure so as to save space; according to the invention, a plurality of procedures are integrated, continuous production of pole pieces from extrusion, rolling, thinning and compounding to drying and winding is realized, and the continuous pole piece production line has the advantages of small occupied area, convenience in adjustment, stable operation, good product quality consistency and the like.

Description

Technical Field

[0001] This invention relates to the field of electrode production equipment technology, and in particular to an electrode roll forming composite production line and process. Background Technology

[0002] In the continuous production of functional films such as battery electrodes, traditional production lines typically use multiple independent machines to complete processes such as extrusion, rolling, thinning, lamination, drying, and winding in sections. This discrete layout results in long lines with large floor space requirements. Material transfer between processes requires repeated feeding and docking, which is not only cumbersome but also highly susceptible to tension fluctuations that can cause electrode stretching deformation or wrinkling. Furthermore, the independent control systems of each machine make it difficult to achieve coordinated control and precise matching of process parameters, severely impacting electrode quality and production efficiency. In addition, traditional equipment has shortcomings in roller structure, transmission synchronization, and thermal management, further limiting the consistency of electrode performance. Summary of the Invention

[0003] Based on this, the purpose of the present invention is to provide an electrode roll forming composite production line and process.

[0004] The present invention adopts the following technical solution:

[0005] An electrode roll forming composite production line includes: An extrusion rolling device includes an extrusion mechanism, a rolling mechanism, and a tension trimming mechanism arranged sequentially. The extrusion mechanism is used to heat and plasticize the material and extrude it into shape. The rolling mechanism is used to roll the extruded material into shape. The tension trimming mechanism includes a tension control component for adjusting the tension of the material and a cutter component for cutting the edge of the material. A thinning and laminating device includes a thinning mechanism, a thinning and laminating mechanism, and a metal foil unwinding mechanism. The thinning mechanism includes two thinning rollers symmetrically arranged vertically, which are used to perform initial thinning on the material after roll forming. The thinning and laminating mechanism includes a first thinning and laminating roller, a transfer laminating roller, and a second thinning and laminating roller arranged sequentially along the material conveying direction. The discharge end of the metal foil unwinding mechanism is positioned towards the transfer laminating roller and the second thinning and laminating roller. The first thinning and laminating roller and the transfer laminating roller are used to perform secondary thinning on the material after the initial thinning, and the transfer laminating roller and the second thinning and laminating roller are used to laminate metal foil onto the surface of the material after the secondary thinning. A drying device, wherein the drying device has a U-shaped box structure, and the feed end of the drying device is connected to the thinning and composite mechanism; and A winding device is connected to the discharge end of the drying device to wind up the dried material.

[0006] Preferably, the roller pressing mechanism includes a first frame, an upper roller pressing assembly, and a lower roller pressing assembly; the upper roller pressing assembly and the lower roller pressing assembly are vertically aligned on the first frame; the upper roller pressing assembly and the lower roller pressing assembly have the same structure, each including a pressure roller, mounting seats at both ends of the pressure roller, and a roller pressing drive motor connected to the pressure roller; the first frame is provided with a vertically extending movable groove, and the mounting seats are movably disposed in the movable groove; the bottom inner side of the first frame is provided with a pushing component for pushing the lower roller pressing assembly upward.

[0007] Preferably, the tension trimming mechanism further includes a second frame and an active roller assembly; the second frame is connected to the side of the first frame; the active roller assembly includes an active roller rotatably connected to the second frame; the tension control assembly includes a swing drive motor mounted on the second frame, a swing frame rotatably connected to the swing drive motor, and a tension swing roller rotatably connected to the swing frame; the cutter assembly includes an adjusting slide rail connected to the second frame and two trimming units slidably connected to the adjusting slide rail; each trimming unit includes a sliding seat slidably connected to the adjusting slide rail, a cutting drive module mounted on the sliding seat, and a blade rotatably connected to the cutting drive module; a ramp is provided at the connection between the sliding seat and the cutting drive module, and the cutting drive module is mounted on the ramp.

[0008] Preferably, the thinning mechanism further includes a first integral archway, a first driving device, and a gap elimination device; two first integral archways are provided, and the first driving device and the gap elimination device are respectively provided corresponding to the thinning rollers; the two first integral archways are symmetrically arranged at both ends of the two thinning rollers; two sets of first driving devices are respectively connected to the two thinning rollers for transmission; the gap elimination device is correspondingly connected to both ends of the two thinning rollers to eliminate the gap between the two thinning rollers; the gap elimination device includes a clearance mounting seat, an adjusting bend cylinder, and a mounting lug; the clearance mounting seat is rotatably engaged with the thinning roller; one end of the adjusting bend cylinder is hinged to the end of the clearance mounting seat, and the adjusting bend cylinder is... The other end of the bending cylinder is hinged to the mounting lug; the mounting lug is fixedly connected to the first integral archway; the first driving device includes a first connecting plate, a first driving motor, a first motor anti-rotation plate, a first slider, and a first linear guide rail; the first connecting plate is fixedly connected to the first driving motor, and the first linear guide rail is assembled and connected to the side of the first connecting plate facing the first integral archway; the output end of the first driving motor passes through the first connecting plate and is correspondingly connected to the thinning roller; one end of the first motor anti-rotation plate is connected to a first expansion sleeve; the first slider is connected to the end of the first expansion sleeve away from the first motor anti-rotation plate; the first linear guide rail and the first slider are in sliding cooperation.

[0009] Preferably, the thinning composite mechanism further includes two second integral arches and several second driving devices; the two second integral arches are symmetrically arranged on both sides of the first thinning composite roller and the transfer composite roller; the first thinning composite roller, the transfer composite roller, and the second thinning composite roller are all connected to the second driving devices to realize the rotation of the first thinning composite roller, the transfer composite roller, and the second thinning composite roller; the second driving device includes a second connecting plate, a second driving motor, a second motor anti-rotation plate, a second slider, and a second linear guide rail; one end face of the second connecting plate is fixedly connected to the second driving motor, and the other end is assembled and connected to the second linear guide rail; the output end of the second driving motor passes through the second connecting plate and is correspondingly driven and connected to the first thinning composite roller, the transfer composite roller, or the second thinning composite roller; one end of the second motor anti-rotation plate is connected to a second expansion sleeve; the second slider is connected to the end of the second expansion sleeve away from the second motor anti-rotation plate; the second linear guide rail and the second slider are slidably engaged.

[0010] Preferably, the two ends of the first thinning composite roller are respectively connected to the first bearing seat by bearings, and the outer side of the first bearing seat is provided with a first thin-type oil cylinder, and the piston rod of the first thin-type oil cylinder is drivenly connected to the first bearing seat.

[0011] Preferably, the thinning composite mechanism further includes a support bearing seat, a first support roller, and a second support roller; the first support roller and the second support roller are rotatably connected to the support bearing seat via bearings; the first support roller and the second support roller are arranged symmetrically from top to bottom and both abut against the first thinning composite roller to provide support force; the thinning composite mechanism further includes a second pressure cylinder and two second thin cylinders; the second pressure cylinder is driven and connected to the rear side of the support bearing seat; the two second thin cylinders are driven and connected to the rear side of the support bearing seat and are symmetrically arranged on the upper and lower sides of the second pressure cylinder.

[0012] Preferably, the two ends of the transfer composite roller are respectively connected to the second bearing seat via bearings; both ends of the transfer composite roller are connected to the transfer bending cylinder seat, the transfer bending cylinder seat is located on the outside of the second bearing seat; the two ends of the side of the transfer bending cylinder seat are respectively hinged to the first bending cylinder, the cylinder body of the first bending cylinder is hinged to the first lifting lug, and the first lifting lug is fixed to the second integral archway.

[0013] Preferably, both ends of the second thinning composite roller are respectively connected to a third bearing seat via bearings, and a third pressure cylinder for applying pressure to the third bearing seat is connected to the outside of the third bearing seat; both ends of the second thinning composite roller are connected to a composite bending cylinder seat, and the composite bending cylinder seat is located on the outside of the third bearing seat. The two ends of the side of the composite bending cylinder seat are respectively hinged to a second bending cylinder, and the cylinder body of the second bending cylinder is hinged to a second lifting lug, which is fixed to the second integral archway.

[0014] An electrode roll forming composite process, based on the above-mentioned electrode roll forming composite production line, includes the following steps: S1. Material extrusion and rolling: The material is heated and plasticized by the extrusion mechanism and then extruded into shape. Subsequently, the extruded material is rolled into shape by the rolling mechanism. S2. Tension control and edge trimming: The tension of the rolled material is adjusted by the tension trimming mechanism, and the edge of the material is trimmed simultaneously. S3, Initial thinning: The material with the cut edges is introduced into the thinning mechanism and subjected to initial thinning by two thinning rollers arranged symmetrically above and below; S4. Secondary thinning: The material after the initial thinning is introduced into the thinning composite mechanism, and the material is thinned a second time through the first thinning composite roller and the transfer composite roller. S5. Composite: Metal foil is supplied between the transfer composite roller and the second thinning composite roller through the metal foil unwinding mechanism; the metal foil is composited onto the surface of the material after secondary thinning under the action of the transfer composite roller and the second thinning composite roller. S6. Drying: The compounded material is sent into the drying device for drying treatment; S7. Winding: The dried material is wound up through the winding device to obtain the finished electrode sheet.

[0015] The beneficial effects of this invention are as follows: The electrode roll forming composite production line and process involved in this invention integrates multiple processes such as extrusion, roll forming, tension trimming, thinning, composite, drying and winding into a continuous production line, realizing continuous production of materials from extrusion to winding, reducing equipment footprint, simplifying process connections, and avoiding repeated material transfer between equipment.

[0016] The roller pressing mechanism facilitates adjustment of the roller gap through a vertically adjustable roller pressing assembly and a bottom pushing structure; the tension trimming mechanism uses a swingable tension roller to adjust the material tension, and works with an inclined cutting assembly to cut the material edge, which helps to keep the material flat.

[0017] The thinning mechanism fine-tunes the end position of the thinning rollers through a gap elimination device, reducing the gap between rollers and improving the uniformity of thinning. The thinning composite mechanism uses support rollers to enhance the rigidity of the composite rollers, and adjusts the position and pressure of each composite roller through multiple sets of hydraulic cylinders and bending cylinders to adapt to different material thicknesses and composite process requirements.

[0018] The drying device adopts a U-shaped structure layout, which increases the material travel path within a limited length, helps to dry evenly and saves equipment space. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the electrode roll forming composite production line of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of the electrode roll forming composite production line with the drying device hidden behind it; Figure 3 for Figure 2 A schematic diagram of the structure of the electrode roll forming composite production line after the winding device is hidden; Figure 4 This is a schematic diagram of the extrusion roller pressing device in this invention; Figure 5 This is a schematic diagram of the roller pressing mechanism and tension trimming mechanism in this invention; Figure 6 This is a schematic diagram of the tension trimming mechanism in this invention; Figure 7 This is a bottom view of the tension trimming mechanism in this invention; Figure 8 for Figure 7 Sectional view along AA; Figure 9 This is a schematic diagram of the first structure of the thinning mechanism in this invention; Figure 10 for Figure 9 A schematic diagram of the partial structure of circle B in the middle; Figure 11 This is a schematic diagram of the second structure of the thinning mechanism in this invention; Figure 12 This is a schematic diagram of the thinning composite mechanism in this invention; Figure 13 This is a front view of the thinning composite mechanism in this invention; Figure 14 This is a top view of the thinning composite mechanism in this invention; Figure 15 for Figure 14 Sectional view along CC; Figure 16 This is a partial structural diagram of the thinning composite mechanism in this invention; Figure 17 This is a process flow diagram of the roll forming composite process of the present invention.

[0020] Numbering on the map: 10 - Extrusion roller pressing device; 11-Extrusion mechanism; 111-Extruder housing; 112-Drive motor; 113-Screw; 114-Feeding funnel; 115-Extrusion die; 12-Roller pressing mechanism; 121-First frame; 122-Upper roller pressing assembly; 123-Lower roller pressing assembly; 124-Pressure roller; 125-Mounting base; 126-Roller pressing drive motor; 127-Moving groove; 128-Pushing component; 13-Tension trimming mechanism; 14-Second frame; 15-Drive roller assembly; 16-Tension control assembly; 161-Oscillating drive motor; 162-Oscillating frame; 163-Tension swing roller; 164-Counterweight; 17-Cutter assembly; 171-Adjusting slide rail; 172-Trimming unit; 173-Sliding seat; 174-Cutting drive module; 175-Blade; 176-Slant table; 20-Thinning composite device; 21-Thinning mechanism; 211-Thinning roller; 212-First integral archway; 213-First drive device; 214-First connecting plate; 215-First drive motor; 216-First motor anti-rotation plate; 217-First slider; 218-First linear guide rail; 219-First expansion sleeve; 220-Gap elimination device; 221-Clearance mounting seat; 222-Adjusting cylinder; 223-Hanging lug; 22-Thinning composite structure; 23-First thinning composite roller; 231-First bearing housing; 232-First thin-film hydraulic cylinder; 233-Support bearing housing; 234-First support roller; 235-Second support roller; 236-Second pressure hydraulic cylinder; 237-Second thin-film hydraulic cylinder; 24-Transfer composite roller; 241-Second bearing housing; 242-Transfer curved cylinder housing; 243-First curved cylinder; 244-First lifting lug; 25-Second thinning composite roller; 251-Third bearing housing; 252-Third pressure cylinder; 253-Composite bending cylinder housing; 254-Second bending cylinder; 255-Second lifting lug; 26 - Second integrated archway; 27-Second driving device; 271-Second connecting plate; 272-Second drive motor; 273-Second motor anti-rotation plate; 274-Second slider; 275-Second linear guide rail; 276-Second expansion sleeve; 28 - Metal foil unwinding mechanism; 30 - Drying device; 40 - Rewinding device. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] In the description of this invention, it should be noted that the terms "vertical direction," "up," "down," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] like Figures 1 to 15 As shown, the electrode roll forming and laminating production line of the present invention includes an extrusion roll forming device 10, a thinning and laminating device 20, a drying device 30 and a winding device 40; the above devices are arranged in sequence along the material travel direction to realize continuous production from material extrusion, roll forming, thinning and laminating, drying and curing to finished product winding.

[0025] Please see Figures 1 to 8 The extrusion roller pressing device 10 is set at the beginning of the production line, and includes an extrusion mechanism 11, a roller pressing mechanism 12 and a tension trimming mechanism 13 arranged in sequence.

[0026] Specifically, such as Figure 4 As shown, the extrusion mechanism 11 includes an extruder housing 111, inside which is installed a screw 113 driven by a drive motor 112. A feeding funnel 114 is provided at the top, and an extrusion die 115 is installed at the front end. Material is added through the feeding funnel 114, and after being conveyed, sheared, and heated by the screw 113, it is melted and plasticized and continuously extruded from the extrusion die 115 to form a strip-shaped preform.

[0027] Specifically, the rolling mechanism 12 receives the strip-shaped preform from the extrusion die 115 and rolls it. The rolling mechanism 12 includes a first frame 121 and an upper rolling assembly 122 and a lower rolling assembly 123 mounted on the first frame 121. The upper rolling assembly 122 and the lower rolling assembly 123 have the same structure, both including a pressure roller 124, a mounting base 125, and a rolling drive motor 126 (e.g., ...). Figure 5 (As shown). The first frame 121 has a vertically movable groove 127. The mounting bases 125 of the upper roller pressing assembly 122 and the lower roller pressing assembly 123 can move up and down within the movable groove 127, thereby adjusting the roller pressing gap between the upper roller pressing assembly 122 and the lower roller pressing assembly 123 to ensure the uniformity and consistency of the roller pressing thickness. A pushing component 128 is installed at the bottom of the first frame 121. The pushing component 128 is used to push the lower roller pressing assembly 123 upward to ensure the roller pressing pressure. In this embodiment, the pushing component 128 is a hydraulic cylinder.

[0028] Specifically, such as Figures 6 to 8 As shown, the tension trimming mechanism 13 controls the tension and trims the edges of the rolled material. The tension trimming mechanism 13 includes a second frame 14, a drive roller assembly 15, a tension control assembly 16, and a cutter assembly 17. The tension control assembly 16 includes a swing drive motor 161, a swing frame 162 driven by the swing drive motor 161, and a tension swing roller 163 mounted on the swing frame 162. The material wrap angle is dynamically adjusted by changing the angle of the swing frame 162, thereby maintaining stable tension. Adjustable counterweights 164 are provided on both sides of the swing frame 162. The counterweights 164 make tension adjustment smoother and effectively prevent stretching deformation or wrinkling caused by excessively rapid swinging of the swing frame 162. The cutting assembly 17 includes an adjustment slide rail 171 fixed on the second frame 14 and two edge-cutting units 172 movable along the adjustment slide rail 171. Each edge-cutting unit 172 includes a sliding seat 173 slidably connected to the adjustment slide rail 171, a cutting drive module 174 mounted on the sliding seat 173, and a blade 175 drivenly connected to the cutting drive module 174. Furthermore, a ramp 176 is provided at the connection between the sliding seat 173 and the cutting drive module 174. The cutting drive module 174 is mounted on the ramp 176. The inclined cutting method can reduce cutting resistance and improve edge-cutting quality. At the same time, the design of the adjustment slide rail 171 allows the edge-cutting width to be flexibly adjusted according to product requirements.

[0029] Please see Figures 1 to 3 The thinning and compounding device 20 is located behind the extrusion roller pressing device 10. For example... Figures 9 to 16 As shown, the thinning and composite device 20 includes a thinning mechanism 21, a thinning and composite mechanism 22, and a metal foil unwinding mechanism 28 to complete the primary thinning, secondary thinning, and metal foil composite of the electrode sheet.

[0030] Specifically, such as Figures 9 to 11 As shown, the thinning mechanism 21 includes two symmetrically arranged first integral arches 212, two sets of thinning rollers 211 symmetrically arranged vertically on the first integral arches 212, two sets of first drive devices 213 corresponding to the thinning rollers 211, and two sets of gap elimination devices 220 corresponding to the thinning rollers 211. The two first integral arches 212 are symmetrically arranged at both ends of the two thinning rollers 211, providing high-rigidity support for the thinning rollers 211 and effectively reducing vibration and deformation during equipment operation. The two sets of first drive devices 213 are respectively connected to the two thinning rollers 211 for transmission, realizing independent driving of the two thinning rollers 211. The gap elimination devices 220 are correspondingly connected to both ends of the two thinning rollers 211 to eliminate the assembly gap between the thinning rollers 211 and the dynamic gap generated during operation.

[0031] The first driving device 213 includes a first connecting plate 214, a first driving motor 215, a first motor anti-rotation plate 216, a first slider 217, and a first linear guide rail 218. The first connecting plate 214 is fixedly connected to the first driving motor 215, and the first linear guide rail 218 is assembled and connected to the side of the first connecting plate 214 facing the first integral archway 212. The output end of the first driving motor 215 passes through the first connecting plate 214 and is correspondingly driven connected to the thinning roller 211. One end of the first motor anti-rotation plate 216 is connected to a first expansion sleeve 219, the first slider 217 is connected to the end of the first expansion sleeve 219 away from the first motor anti-rotation plate 216, and the first linear guide rail 218 is slidably engaged with the first slider 217. In this structure, the cooperation between the first linear guide 218 and the first slider 217 restricts the first drive motor 215 to move only in a straight line, preventing it from twisting or deviating during operation, thus ensuring the coaxiality of the transmission between the first drive motor 215 and the thinning roller 211. Simultaneously, the first expansion sleeve 219 further enhances the anti-rotation effect, ensuring precise and stable power transmission. The first drive device 213 ensures that the thinning roller 211 maintains stable transmission even when its position changes, avoiding uneven thinning caused by unstable transmission.

[0032] The gap elimination device 220 includes a clearance mounting base 221, an adjusting cylinder 222, and a mounting lug 223. The clearance mounting base 221 is rotatably engaged with the thinning roller 211. Two adjusting cylinders 222 are symmetrically arranged on both sides of the clearance mounting base 221. One end of the adjusting cylinder 222 is hinged to the end of the clearance mounting base 221, and the other end is hinged to the mounting lug 223. The mounting lug 223 is fixedly connected to the first integral archway 212. By driving the extension and retraction of the adjusting cylinder 222, the clearance mounting base 221 can be finely adjusted along a preset direction, thereby eliminating the assembly gap between the thinning rollers 211 and the dynamic gap generated during operation. This significantly improves the uniformity of the single-stage thinning and solves the problem of uneven thickness caused by gaps in traditional equipment.

[0033] Please see Figures 12 to 16 Specifically, the thinning and composite mechanism 22 includes a first thinning and composite roller 23, a transfer composite roller 24, a second thinning and composite roller 25, a second integral archway 26, and a second drive device 27. Two second integral archways 26 are symmetrically arranged on both sides of the first thinning and composite roller 23 and the transfer composite roller 24, providing high-rigidity support for them. The first thinning and composite roller 23, the transfer composite roller 24, and the second thinning and composite roller 25 are arranged sequentially along the material conveying direction, forming a continuous thinning and composite path. Each of the first thinning and composite roller 23, the transfer composite roller 24, and the second thinning and composite roller 25 is equipped with an independent second drive device 27, enabling each roller to rotate independently. The second driving device 27 includes a second connecting plate 271, a second driving motor 272, a second motor anti-rotation plate 273, a second slider 274, and a second linear guide rail 275. One end face of the second connecting plate 271 is fixedly connected to the second driving motor 272, and the other end is assembled and connected to the second linear guide rail 275. The output end of the second driving motor 272 passes through the second connecting plate 271 and is correspondingly connected to the first thinning composite roller 23, the transfer composite roller 24, or the second thinning composite roller 25. One end of the second motor anti-rotation plate 273 is connected to a second expansion sleeve 276. The second slider 274 is connected to the end of the second expansion sleeve 276 that is away from the second motor anti-rotation plate 273. The second linear guide rail 275 and the second slider 274 are in sliding engagement.

[0034] The first thinning composite roller 23 has two ends connected to first bearing seats 231 via bearings. A first thin-type hydraulic cylinder 232 is located on the outer side of the first bearing seat 231. The piston rod of the first thin-type hydraulic cylinder 232 is drivenly connected to the first bearing seat 231. The extension and retraction of the first thin-type hydraulic cylinder 232 drives the first bearing seat 231 and the first thinning composite roller 23 to adjust their horizontal positions. The thinning composite mechanism 22 also includes a supporting bearing seat 233, a first supporting roller 234, and a second supporting roller 235. The first supporting roller 234 and the second supporting roller 235 are rotatably connected to the supporting bearing seat 233 via bearings. The first supporting roller 234 and the second supporting roller 235 are arranged symmetrically vertically and both abut against the first thinning composite roller 23 to provide support. A second pressure cylinder 236 and two second thin cylinders 237 are provided on the rear side of the support bearing housing 233. The second pressure cylinder 236 and the two second thin cylinders 237 are all driven and connected to the rear side of the support bearing housing 233. Specifically, the second pressure cylinder 236 is located in the middle position in the vertical direction, while the two second thin cylinders 237 are symmetrically arranged on the upper and lower sides of the second pressure cylinder 236. The second pressure cylinder 236 is used to apply the main pressure to the support bearing housing 233, and the two second thin cylinders 237 are used to apply fine adjustment pressure to the support bearing housing 233 to correct its posture. That is, the second pressure cylinder 236 and the two second thin cylinders 237 apply pressure to the support bearing housing 233 toward the first thinning composite roller 23, so that the first support roller 234 and the second support roller 235 support the first thinning composite roller 23 with constant pressure, thereby improving the working stability of the first thinning composite roller 23 and the strength of the overall system.

[0035] The transfer composite roller 24 has two ends connected to second bearing seats 241 via bearings. Both ends of the transfer composite roller 24 are also connected to transfer bending cylinder seats 242, which are located outside the second bearing seats 241. First bending cylinders 243 are hinged to the sides of the transfer bending cylinder seats 242, and the cylinder bodies of the first bending cylinders 243 are hinged to first lifting lugs 244, which are fixed to the second integral archway 26. The horizontal position of the transfer composite roller 24 can be adjusted by extending and retracting the first bending cylinders 243.

[0036] The second thinning composite roller 25 has a third bearing seat 251 connected to both ends of the roller via bearings. A third pressurizing cylinder 252 for applying pressure to the third bearing seat 251 is connected to the outside of the third bearing seat 251. Both ends of the second thinning composite roller 25 are connected to a composite bending cylinder seat 253, which is located on the outside of the third bearing seat 251. A second bending cylinder 254 is hinged to both ends of the side of the composite bending cylinder seat 253. A second lifting lug 255 is hinged to the cylinder body of the second bending cylinder 254 and fixed to the second integral archway 26.

[0037] The metal foil unwinding mechanism 28 is arranged to the side of the thinning and laminating mechanism 22, with its discharge end pointing towards the laminating area between the transfer laminating roller 24 and the second thinning laminating roller 25. The metal foil unwinding mechanism 28 is equipped with a tension controller and a web guiding device to ensure that the metal foil enters the laminating station with constant tension and in a flat state.

[0038] Please see Figure 1 The drying device 30 adopts a U-shaped box structure, which can effectively extend the drying length and significantly save factory space.

[0039] Please see Figure 1 and Figure 2 The winding device 40 is installed at the end of the electrode roll forming and composite production line. The winding device 40 is a fully automatic constant tension winding machine, which ensures that the electrode maintains constant tension during the winding process and avoids problems such as uneven tightness or uneven edges of the roll material caused by tension fluctuations.

[0040] The working principle of the electrode roll forming composite production line involved in this invention is as follows: The material first enters the extrusion roll forming device 10, is heated and plasticized by the extrusion mechanism 11 and extruded into shape, and is then precisely rolled by the roll forming mechanism 12 to form a strip with uniform thickness. The edge is then trimmed by the tension trimming mechanism 13 under constant tension. Subsequently, the strip enters the thinning composite device 20, where it undergoes initial precision thinning by the thinning mechanism 21, and the gap elimination device 220 ensures uniform thinning. The thinned material continues to enter the thinning composite mechanism 22, where it undergoes secondary thinning by the first thinning composite roller 23 and the transfer composite roller 24. At the same time, the metal foil unwinding mechanism 28 accurately feeds the metal foil between the transfer composite roller 24 and the second thinning composite roller 25, achieving a firm composite between the metal foil and the substrate under pressure and temperature. The composite electrode enters the U-shaped drying device 30, where it is fully dried in a confined space through a meandering path. Finally, the dried electrode is neatly wound up by the constant tension winding device 40.

[0041] like Figure 17 The diagram illustrates the roll forming process of the present invention. Based on the aforementioned sheet roll forming production line, it includes the following steps: S1. Material extrusion and rolling: The material is heated and plasticized by the extrusion mechanism 11 and continuously extruded into shape. The extruded strip material immediately enters the rolling mechanism 12, and is rolled and shaped by the opposing rotation and pressure of the upper rolling assembly 122 and the lower rolling assembly 123 in the rolling mechanism 12.

[0042] S2. Tension control and edge trimming: After being rolled and shaped, the material enters the tension trimming mechanism 13. The tension of the material is adjusted by the dynamic swing of the tension swing roller 163 to maintain constant tension. At the same time, the two trimming units 172 cut the two sides of the material synchronously according to the set width to obtain strip with consistent width.

[0043] S3. Initial thinning: The strip after edge trimming enters the thinning mechanism 21 and undergoes initial calendering and thinning between two symmetrically arranged thinning rollers 211. During the process, the gap elimination device 220 eliminates the gap between the rollers in real time to ensure uniform thinning.

[0044] S4. Secondary thinning and lamination: After the initial thinning, the material enters the thinning and lamination mechanism 22. It first undergoes secondary calendering and thinning through the first thinning and lamination roller 23 and the transfer lamination roller 24 to further improve the thickness uniformity and density. During the secondary thinning, the metal foil unwinding mechanism 28 continuously releases the metal foil, which enters the gap between the transfer lamination roller 24 and the second thinning and lamination roller 25 together with the material. Under the action of pressure and temperature, the metal foil is firmly laminated to the surface of the material to form a composite electrode.

[0045] S5. Drying: The composite electrode enters the U-shaped drying device 30 and is dried and cured at a controlled temperature to ensure that the composite layer is firmly bonded.

[0046] S6. Winding: The dried and cured electrode sheets are neatly wound up by the winding device 40 in a constant tension mode to obtain the finished electrode sheet roll.

[0047] Compared to existing technologies, the electrode roll forming composite production line and process involved in this invention integrates multiple processes such as extrusion, roll forming, tension trimming, thinning, composite, drying, and winding into a continuous production line, realizing continuous production from extrusion to winding, reducing equipment footprint, simplifying process connections, and avoiding repeated material transfer between equipment. The roll forming mechanism 12, with its vertically adjustable roll forming components and bottom push structure, facilitates adjustment of the roll forming gap; the tension trimming mechanism 13 uses a swingable tension roller 163 to adjust the material tension, and, in conjunction with the inclined cutter assembly 17, cuts the material edges, helping to maintain material flatness. The thinning mechanism 21 uses a gap elimination device 220 to fine-tune the end position of the thinning roller 211, reducing the gap between rollers and improving thinning uniformity; the thinning composite mechanism 22 uses a support roller to enhance the rigidity of the composite roller, and uses multiple sets of hydraulic cylinders and bending cylinders to adjust the position and pressure of each composite roller to adapt to different material thicknesses and composite process requirements. The drying device 30 adopts a U-shaped structure layout, which increases the material travel path within a limited length, helps to dry evenly and saves equipment space.

[0048] The above description merely illustrates preferred technical solutions of the present invention, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and the present invention also intends to include these modifications and variations.

Claims

1. A production line for composite electrode rolling, characterized in that, include: An extrusion rolling device includes an extrusion mechanism, a rolling mechanism, and a tension trimming mechanism arranged sequentially. The extrusion mechanism is used to heat and plasticize the material and extrude it into shape. The rolling mechanism is used to roll the extruded material into shape. The tension trimming mechanism includes a tension control component for adjusting the tension of the material and a cutter component for cutting the edge of the material. A thinning and laminating device includes a thinning mechanism, a thinning and laminating mechanism, and a metal foil unwinding mechanism. The thinning mechanism includes two thinning rollers symmetrically arranged vertically, which are used to perform initial thinning on the material after roll forming. The thinning and laminating mechanism includes a first thinning and laminating roller, a transfer laminating roller, and a second thinning and laminating roller arranged sequentially along the material conveying direction. The discharge end of the metal foil unwinding mechanism faces the transfer laminating roller and the second thinning and laminating roller. The first thinning composite roller and the transfer composite roller are used to perform secondary thinning on the material after the initial thinning, and the transfer composite roller and the second thinning composite roller are used to laminate metal foil onto the surface of the material after the secondary thinning. A drying device, wherein the drying device has a U-shaped box structure, and the feed end of the drying device is connected to the thinning and composite mechanism; and A winding device is connected to the discharge end of the drying device to wind up the dried material.

2. The electrode roll forming composite production line according to claim 1, characterized in that, The roller pressing mechanism includes a first frame, an upper roller pressing assembly, and a lower roller pressing assembly; the upper roller pressing assembly and the lower roller pressing assembly are vertically aligned and arranged on the first frame; The upper and lower roller pressing assemblies have the same structure. Both the upper and lower roller pressing assemblies include a pressure roller, mounting seats at both ends of the pressure roller, and a roller pressing drive motor that is connected to the pressure roller. The first frame is provided with a vertically extending movable groove, and the mounting seats are movably disposed in the movable groove. The bottom inner side of the first frame is provided with a pushing component for pushing the lower roller pressing assembly upward.

3. The electrode roll forming composite production line according to claim 2, characterized in that, The tension trimming mechanism also includes a second frame and an active roller assembly; The second frame is connected to the side of the first frame; the active roller assembly includes an active roller rotatably connected to the second frame; the tension control assembly includes a swing drive motor mounted on the second frame, a swing frame rotatably connected to the swing drive motor, and a tension swing roller rotatably connected to the swing frame; the cutter assembly includes an adjustment slide rail connected to the second frame and two cutting units slidably connected to the adjustment slide rail; the cutting unit includes a sliding seat slidably connected to the adjustment slide rail, a cutting drive module mounted on the sliding seat, and a blade rotatably connected to the cutting drive module; a ramp is provided at the connection between the sliding seat and the cutting drive module, and the cutting drive module is mounted on the ramp.

4. The electrode roll forming composite production line according to claim 1, characterized in that, The thinning mechanism further includes a first integral archway, a first driving device, and a gap elimination device; two first integral archways are provided, and the first driving device and the gap elimination device are respectively provided corresponding to the thinning roller; Two first integral archways are symmetrically arranged at both ends of two thinning rollers; two sets of first drive devices are respectively connected to the two thinning rollers; the gap elimination device is correspondingly connected to both ends of the two thinning rollers to eliminate the gap between the two thinning rollers. The gap elimination device includes a clearance mounting base, an adjusting cylinder, and a mounting lug; the clearance mounting base is rotatably engaged with the thinning roller; one end of the adjusting cylinder is hinged to the end of the clearance mounting base, and the other end of the adjusting cylinder is hinged to the mounting lug; the mounting lug is fixedly connected to the first integral archway. The first driving device includes a first connecting plate, a first driving motor, a first motor anti-rotation plate, a first slider, and a first linear guide rail; the first connecting plate is fixedly connected to the first driving motor, and the first linear guide rail is assembled and connected to the side of the first connecting plate facing the first integral archway; the output end of the first driving motor passes through the first connecting plate and is correspondingly connected to the thinning roller; one end of the first motor anti-rotation plate is connected to a first expansion sleeve; the first slider is connected to the end of the first expansion sleeve away from the first motor anti-rotation plate; the first linear guide rail and the first slider are slidably engaged.

5. The electrode roll forming composite production line according to claim 1, characterized in that, The thinning composite mechanism also includes two second integral archways and several second drive devices; Two second integral archways are symmetrically arranged on both sides of the first thinning composite roller and the transfer composite roller; the first thinning composite roller, the transfer composite roller, and the second thinning composite roller are all connected to the second driving device to realize the rotation of the first thinning composite roller, the transfer composite roller, and the second thinning composite roller; the second driving device includes a second connecting plate, a second driving motor, a second motor anti-rotation plate, a second slider, and a second linear guide rail; one end face of the second connecting plate is fixedly connected to the second driving motor, and the other end is assembled and connected to the second linear guide rail; the output end of the second driving motor passes through the second connecting plate and is correspondingly driven and connected to the first thinning composite roller, the transfer composite roller, or the second thinning composite roller; one end of the second motor anti-rotation plate is connected to a second expansion sleeve; the second slider is connected to the end of the second expansion sleeve that is away from the second motor anti-rotation plate; the second linear guide rail and the second slider are in sliding engagement.

6. The electrode roll forming composite production line according to claim 5, characterized in that, The first thinning composite roller has a first bearing seat connected to both ends by bearings. A first thin-type oil cylinder is provided on the outside of the first bearing seat, and the piston rod of the first thin-type oil cylinder is drivenly connected to the first bearing seat.

7. The electrode roll forming composite production line according to claim 6, characterized in that, The thinning composite mechanism further includes a support bearing seat, a first support roller, and a second support roller; the first support roller and the second support roller are rotatably connected to the support bearing seat via bearings; the first support roller and the second support roller are arranged symmetrically up and down, and both abut against the first thinning composite roller to provide support force; The thinning composite mechanism further includes a second pressurizing cylinder and two second thin-type cylinders; the second pressurizing cylinder is driven and connected to the rear side of the support bearing seat; the two second thin-type cylinders are driven and connected to the rear side of the support bearing seat and are symmetrically arranged on the upper and lower sides of the second pressurizing cylinder.

8. The electrode roll forming composite production line according to claim 1, characterized in that, The two ends of the transfer composite roller are respectively connected to the second bearing seat through bearings; both ends of the transfer composite roller are connected to the transfer bending cylinder seat, which is located on the outside of the second bearing seat; the two ends of the side of the transfer bending cylinder seat are respectively hinged to the first bending cylinder, and the cylinder body of the first bending cylinder is hinged to the first lifting lug, which is fixed to the second integral archway.

9. The electrode roll forming composite production line according to claim 1, characterized in that, The second thinning composite roller has a third bearing seat connected to both ends of the roller via bearings. A third pressure cylinder for applying pressure to the third bearing seat is connected to the outside of the third bearing seat. Both ends of the second thinning composite roller are connected to composite bending cylinder seats. The composite bending cylinder seats are located on the outside of the third bearing seat. The two ends of the side of the composite bending cylinder seat are respectively hinged to a second bending cylinder. The cylinder body of the second bending cylinder is hinged to a second lifting lug. The second lifting lug is fixed to the second integral archway.

10. An electrode roll forming composite process, based on the electrode roll forming composite production line according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Material extrusion and rolling: The material is heated and plasticized by the extrusion mechanism and then extruded into shape. Subsequently, the extruded material is rolled into shape by the rolling mechanism. S2. Tension control and edge trimming: The tension of the rolled material is adjusted by the tension trimming mechanism, and the edge of the material is trimmed simultaneously. S3, Initial thinning: The material with the cut edges is introduced into the thinning mechanism and subjected to initial thinning by two thinning rollers arranged symmetrically above and below; S4. Secondary thinning: The material after the initial thinning is introduced into the thinning composite mechanism, and the material is thinned a second time through the first thinning composite roller and the transfer composite roller. S5. Composite: Metal foil is supplied between the transfer composite roller and the second thinning composite roller through the metal foil unwinding mechanism; The metal foil is laminated onto the surface of the material after secondary thinning under the action of the transfer composite roller and the second thinning composite roller. S6. Drying: The compounded material is sent into the drying device for drying treatment; S7. Winding: The dried material is wound up through the winding device to obtain the finished electrode sheet.

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