Intelligent roller pressing and cutting integrated device

Abstract

The application relates to the technical field of new energy battery manufacturing equipment, in particular to an intelligent roller pressing and cutting integrated device, which comprises a machine body; a conveying mechanism arranged on the machine body and used for conveying an untreated pole piece along a feeding direction; an adjustable roller pressing unit arranged on a transmission path of the conveying mechanism and used for roller pressing the untreated pole piece, the adjustable roller pressing unit comprising at least one pair of roller pressing cylinders capable of relatively moving along a vertical direction to adjust a roller gap distance; a dynamic cutting unit integrated on the adjustable roller pressing unit and arranged on roller surfaces of the at least one roller pressing cylinder, the dynamic cutting unit comprising a plurality of arrayed programmable needle arrays; and a cooperative control system in communication connection with the conveying mechanism, the adjustable roller pressing unit and the dynamic cutting unit respectively. The application physically integrates the roller pressing and cutting functions in a single device, eliminates intermediate transfer, winding and unwinding and secondary positioning links, significantly shortens a production process, and improves overall production efficiency and equipment utilization.

Description

Technical Field

[0001] This application relates to the field of new energy battery manufacturing equipment technology, and in particular to an intelligent integrated roll forming and cutting device. Background Technology

[0002] In the manufacturing process of new energy batteries, especially lithium-ion batteries, the quality of the battery electrodes directly determines the battery's capacity, cycle life, and safety. Electrodes typically refer to semi-finished products formed by coating active materials onto a metal foil substrate (such as aluminum or copper foil). To achieve the energy density, power performance, and safety required by battery design, electrodes mostly require two core processes: precise rolling and cutting. The rolling process is used to compact the electrode material, controlling its thickness and porosity. The coated and dried electrode is passed through a pair of rollers, using pressure and friction to compact it to the target thickness, thereby improving the density and bonding of the active material. This process usually relies on the operator's experience to manually adjust the roller gap, making it difficult to adapt to fluctuations in the thickness and material of the incoming material in real time, which can easily lead to poor precision and material waste.

[0003] The cutting process is used to punch continuous electrode sheets into specific shapes. The rolled electrode sheets need to be cut into specific shapes (such as square, round or with tabs) required for battery assembly by a special die-cutting machine or cutting machine.

[0004] In existing technologies, rolling and cutting are mostly sequential processes completed by two independent machines, requiring the electrode sheets to be transferred between machines. This not only increases the floor space required for production equipment but also easily leads to error accumulation due to secondary positioning, reducing final processing accuracy and overall production efficiency. Furthermore, traditional cutting machines mostly use fixed mechanical molds for punching. If the electrode sheet shape needs to be changed, such as from round to square or with tabs, the machine must be stopped to replace the physical mold. Sometimes, multiple cutting machines of different specifications are needed, and a corresponding set of physical molds must be replaced for each product shape change. This results in high equipment investment, long changeover times, and poor production flexibility. It also suffers from accuracy errors introduced by secondary positioning. This separate "rolling-winding-transfer-cutting" model greatly restricts the implementation of cost reduction and efficiency improvement in the battery manufacturing industry. The inherent defects of large equipment footprint, low process connection efficiency, difficulty in guaranteeing overall accuracy, and insufficient flexibility in production have become bottlenecks restricting cost reduction and efficiency improvement in battery manufacturing. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention provides an intelligent integrated rolling and cutting device, which aims to achieve the simultaneous completion of battery electrode rolling and cutting processes, thereby improving the final production efficiency, processing accuracy, and production flexibility of battery manufacturing.

[0006] This application provides an intelligent roller pressing and cutting integrated device, including: body; A conveying mechanism, mounted on the machine body, is used to transport the electrode sheets to be processed along the feeding direction; An adjustable roller pressing unit is disposed on the transmission path of the conveying mechanism for pressing the electrode sheet to be processed, and includes at least one pair of roller pressing cylinders that can move relative to each other in the vertical direction to adjust the roller gap. A dynamic cutting unit, integrated on the adjustable roller pressing unit, is disposed on the roller surface of at least one of the roller pressing cylinders, including a plurality of programmable ejector pin arrays arranged in an array; The collaborative control system is communicatively connected to the conveying mechanism, the adjustable roller pressing unit, and the dynamic cutting unit, respectively. The collaborative control system can control the programmable ejector array to selectively protrude according to control commands, so as to form a cutting punch on the roller surface of the roller pressing cylinder, and punch the electrode sheet during or after roller pressing.

[0007] Preferably, the adjustable roller pressing unit further includes: A rotary drive mechanism, connected to the roller cylinder drive, is used to drive the roller cylinder to rotate; A displacement adjustment mechanism is connected to at least one of the two rollers and is used to drive the rollers to move in a vertical direction perpendicular to the feeding direction in order to adjust the gap between the two rollers.

[0008] Preferably, it also includes a thickness detection system, the thickness detection system comprising: The pre-detection module, located on the feed side of the adjustable roller pressing unit, is used to detect the initial thickness and material composition of the electrode sheet to be processed. The post-detection module is located on the discharge side of the roller pressing cylinder and is used to detect the actual thickness of the electrode sheet after roller pressing. The collaborative control system can receive detection data from the front detection module, perform feedforward control to set initial rolling parameters, and receive detection data from the rear detection module to perform feedback correction to dynamically adjust the rolling parameters.

[0009] Preferably, the front detection module includes a through-beam laser displacement sensor array and a near-infrared spectrometer, and the rear detection module is at least one ultrasonic thickness gauge.

[0010] Preferably, the programmable ejector pin array is uniformly distributed in a matrix on the roller surface corresponding to the roller cylinder, wherein the spatial resolution of a single ejector pin is no greater than 0.1 mm; The ejector pins in the programmable ejector pin array are electromagnetically driven micro ejector pins, and the base of the ejector pin is a hard alloy with a wear-resistant coating on its end face.

[0011] Preferably, the device further includes a position detection unit for real-time monitoring of the rotation angle or rotation phase of the roller, and transmitting the detection signal to the collaborative control system; The collaborative control system can dynamically calculate and compensate for the triggering timing and pin protrusion position of the dynamic cutting unit based on the detection signal of the position detection unit, the transmission speed of the conveying mechanism, and the rotation speed of the roller pressing cylinder, so as to ensure the accurate physical position of the cutting shape on the electrode sheet.

[0012] Preferably, the device has at least two operating modes: Synchronous cutting mode: The adjustable roller pressing unit contains only a pair of roller pressing cylinders that can move relative to each other in the vertical direction. The adjustable roller pressing unit works synchronously with the dynamic cutting unit, and the roller pressing and cutting are completed in one pass. Step-by-step cutting mode: The adjustable roller pressing unit includes at least two pairs of roller pressing cylinders that can move relative to each other in the vertical direction. Multiple sets of roller pressing cylinders are arranged in a front-to-back array along the feeding direction of the electrode to be processed. Among them, multiple sets of roller pressing cylinders located at the previous station are used to complete the roller pressing work alone, while a set of roller pressing cylinders located at the last station completes the cutting work together with the dynamic cutting unit.

[0013] Preferably, the collaborative control system controls the dynamic cutting unit to perform the cutting operation based on the detection signal from the position detection unit as follows: Before the target cutting area of ​​the electrode to be processed rotates with the roller pressing cylinder to the peak area of ​​the roller gap pressure between the two roller pressing cylinders, the corresponding ejector pins in the programmable ejector pin array are controlled to protrude sequentially to a preset height to form the corresponding punch profile. When the punch contour and the target cutting area of ​​the electrode to be processed enter the peak area of ​​the roll gap pressure as the roller cylinder rotates, the punching is completed with the help of the roll pressure. After the blanking is completed, the corresponding ejector pin is controlled to retract before it contacts the electrode sheet again as the roller rotates.

[0014] Preferably, the machine body is also provided with a human-machine interface, and the collaborative control system is pre-loaded with various cutting pattern data and material parameter data.

[0015] This application also provides a roll forming method based on any one of the above-described intelligent roll forming and cutting integrated devices, including the following steps: S1: Place the coated and dried strip of electrode sheet onto the conveying mechanism; S2: Set the target thickness and cutting shape through the collaborative control system; S3: Start-up device, conveyor mechanism feeds the electrode sheet into the adjustable roller pressing unit; S4: The electrode sheet is rolled by an adjustable rolling unit. At the same time, under the control of the collaborative control system, the electrode sheet is punched by a dynamic cutting unit during or after the rolling process. S5: Outputs a single electrode sheet with a target thickness and a specific shape.

[0016] The beneficial effects of this application are as follows: The intelligent roller pressing and cutting integrated device of this application physically integrates roller pressing and cutting functions into a single device, eliminating intermediate transfer, unwinding and rewinding, and secondary positioning links, significantly shortening the production process and improving overall production efficiency and equipment utilization. By setting an independently retractable programmable ejector pin array on the roller surface, the roller surface can switch between a "flat roller pressing surface" and a "different shaped cutting mold", thereby eliminating the physical boundary between roller pressing and cutting, and enabling the cutting of electrode sheets to be completed simultaneously with roller pressing.

[0017] Furthermore, by physically integrating the rolling and cutting functions into the same equipment, the investment in a separate cutting machine and the electrode transfer process are eliminated, reducing the equipment footprint. At the same time, it also avoids electrode damage and process connection errors that may occur during the transfer process, reduces error accumulation, and improves the production accuracy and efficiency of the electrode.

[0018] In particular, the programmable ejector pin array, which is modularly combined and set on the roller surface, can control the corresponding ejector pins to bulge out in sequence according to the control command, thereby programming to form the corresponding cutting mold. This allows for rapid switching of cutting molds for round, rectangular and irregularly shaped electrode sheets without changing the physical hardware, which greatly reduces mold cost, reduces changeover time and changeover cost, and improves production efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the intelligent roller pressing and cutting integrated device provided in the embodiments of this application; Figure 2 This is a side view of an integrated device provided in an embodiment of this application; Figure 3 This is a side view of another integrated device provided in an embodiment of this application; Figure 4This is a schematic diagram showing the distribution of the programmable ejector pin array on the roller surface of the roller press (after unfolding) in an embodiment of this application.

[0021] Figure label: 100. Machine body; 200. Conveying mechanism; 300. Adjustable roller pressing unit; 310. Roller pressing cylinder; 400. Dynamic cutting unit; 410. Programmable pin array; 500. Collaborative control system; 600. Thickness detection system; 610. Pre-detection module; 620. Post-detection module; 700. Human-machine interface. Detailed Implementation

[0022] The technical solutions of this application will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] The following is combined with Figure 1-4 This application describes the intelligent roller pressing and cutting integrated device provided in the embodiments of this application.

[0024] Reference Figure 1 As shown, the intelligent roller pressing and cutting integrated device provided in this application embodiment mainly includes a machine body 100, a conveying mechanism 200, an adjustable roller pressing unit 300, a dynamic cutting unit 400, and a collaborative control system 500. The main body of the device is the machine body 100 made of sturdy metal, which is used to provide solid support for the overall mechanism.

[0025] The conveying mechanism 200 is installed on the machine body 100 and is used to transport the continuous strip electrode sheet to be processed along the feeding direction. It is responsible for smoothly and continuously transporting the continuous strip electrode sheet after coating and drying to the subsequent processing area. In this embodiment, the conveying mechanism 200 can be a belt conveyor line or roller conveyor line driven by a servo motor to ensure the stability and accuracy of the electrode sheet transmission speed so as to synchronize with the subsequent rolling and cutting action.

[0026] An adjustable roller pressing unit 300 is horizontally disposed across the conveying path of the conveying mechanism 200 for rolling the electrode sheet to be processed. The unit includes at least one pair of roller pressing cylinders 310 arranged vertically opposite each other, and at least one of the two roller pressing cylinders 310 can move relative to each other in the vertical direction under the drive of a high-rigidity displacement adjustment mechanism to adjust the gap between the two roller pressing cylinders 310. Specifically, the adjustable roller pressing unit 300 is also equipped with a displacement adjustment mechanism and a rotation drive mechanism. The displacement adjustment mechanism is connected to at least one roller pressing cylinder 310 and drives it to move vertically up and down, thereby adjusting the gap between the two roller surfaces. The rotation drive mechanism is used to drive one or two roller pressing cylinders 310 to rotate. On the other hand, in order to ensure the stable operation of its rolling operation, the adjustable roller pressing unit 300 also includes a pressure sensor disposed in any one of the roller pressing cylinders 310 to detect the actual pressure during the rolling process. The cooperative control system 500 can control the displacement adjustment mechanism to perform closed-loop adjustment of the gap between the rollers based on the preset target thickness and the real-time detection data of the pressure sensor.

[0027] In one specific embodiment, such as Figure 4 As shown, the dynamic cutting unit 400 is integrated into the adjustable roller pressing unit 300. Its core is a programmable ejector pin array 410 distributed in an array on the surface of a corresponding roller pressing cylinder 310. This programmable ejector pin array 410 is embedded in a high-density matrix on the surface of the corresponding roller pressing cylinder 310, forming a modular combined roller surface of the roller pressing cylinder 310. Each ejector pin is an independent electromagnetically driven micro-ejector actuator, its substrate made of hard alloys such as tungsten carbide, and its working end face is coated with a diamond wear-resistant coating to extend its service life and reduce its damage probability. The radial resolution of a single ejector pin is no greater than 0.1 mm, enabling it to combine into more precise and continuous cutting die patterns. Furthermore, for convenient maintenance and replacement, the ejector pins can be installed on the roller using a hot-swappable connection, allowing operators to replace a faulty ejector pin independently without disassembling the roller. Specifically, a plurality of programmable ejector pin arrays 410 are arranged in an array on the surface of a roller pressing cylinder 310. These ejector pins are electromagnetically driven micro ejector pins, with a substrate made of hard alloys such as tungsten carbide and a diamond wear-resistant coating on the end face. The ejector pins are evenly distributed in a matrix on the roller surface, with a spatial resolution of no more than 0.1 mm for a single ejector pin.

[0028] In one specific embodiment, the collaborative control system 500 is communicatively connected to the conveying mechanism 200, the adjustable roller pressing unit 300, and the dynamic cutting unit 400, respectively, and can use a high-performance industrial PC or a multi-core PLC as the core controller. The collaborative control system 500 is communicatively connected to the corresponding sensors and actuators via industrial Ethernet or high-speed fieldbus, and can control the programmable ejector array 410 to selectively protrude according to control commands, so that the roller surface forms a punch in the area that needs to be cut, and remains flat in the area that does not need to be cut. When the electrode passes through the area, it cooperates with another roller pressing cylinder 310 that forms a die or simply serves as a support surface, and completes the rolling and punching actions in one go under the action of the main rolling pressure.

[0029] By modularly combining the programmable ejector pin array 410 on the roller surface, the corresponding ejector pins can be controlled to bulge sequentially according to control commands, thereby programming to form the corresponding cutting mold. This allows for rapid switching of cutting molds corresponding to different electrode shapes such as round, rectangular and irregularly shaped electrodes without changing physical hardware, which greatly reduces mold costs, reduces changeover time and changeover costs, and improves production efficiency.

[0030] In one specific embodiment, the device further includes a thickness detection system comprising a pre-detection module 610 and a post-detection module 620. The pre-detection module 610, located on the feed side, consists of at least one pair of through-beam high-precision laser displacement sensors and a near-infrared spectrometer. It is used for non-contact measurement of the real-time thickness and approximate outline of the electrode sheet before it enters the roll gap, and for preliminary determination of the material type of the electrode sheet to be processed through spectral analysis, such as determining whether it is an aluminum foil-based or copper foil-based electrode sheet. The post-detection module 620, located on the discharge side, includes at least one ultrasonic thickness gauge for measuring the overall thickness of the electrode sheet after roll pressing and evaluating the internal compaction quality. The collaborative control system 500 can receive the detection data from the pre-detection module 610 and the post-detection module 620 to perform feedforward setting and feedback correction of the roll pressing parameters of the adjustable roll pressing unit 300.

[0031] Specifically, the collaborative control system 500 can call the material database based on the initial thickness of the electrode to be processed and the material itself, and calculate the rolling parameters in combination with the target thickness required for rolling. The rolling parameters include, but are not limited to, the roller gap between the two roller cylinders 310, the rolling pressure, and the roller surface temperature. During the rolling process, when the same batch of electrode to be processed is rolled and cut, the rolling pressure and roller gap between the two roller cylinders 310 can be dynamically adjusted in real time through the post-measured thickness data or compaction thickness data of the post-detection module 620, thereby reducing subsequent production errors.

[0032] In one specific embodiment, a position detection unit is also included, which is used to monitor the rotation angle and phase of the roller cylinder 310 in real time and transmit the detection signal to the collaborative control system 500; The collaborative control system 500 can dynamically calculate and compensate for the triggering timing of the dynamic cutting unit 400 and the protruding position of the pin array based on the detection signal of the position detection unit, the transmission speed of the conveying mechanism 200 and the rotation speed parameters of the roller 310, so as to ensure the accuracy of the physical position of the cutting shape on the electrode sheet.

[0033] In one specific embodiment, the position detection unit is a high-resolution absolute encoder mounted on the roller cylinder 310 or the rotating shaft of the rotary drive mechanism, with an angular resolution of not less than 17 bits per revolution. Specifically, the position detection unit may be a 23-bit high-resolution absolute rotary encoder, which is directly mounted on the drive shaft of the roller cylinder 310 to provide real-time feedback on the absolute rotation angle and phase of the roller.

[0034] In one specific embodiment, a human-machine interface 700 is also provided on the machine body. The collaborative control system 500 has a variety of cutting pattern data and material parameter data pre-set. The human-machine interface 700 is used to input cutting shape parameters, display equipment operating status and alarm information. Operators can call preset patterns or edit new patterns through the human-machine interface 700 and associate them with specific electrode material types and target thicknesses. The system automatically generates or calls relevant comprehensive processing schemes, including rolling parameters and ejector pin action programs.

[0035] Specifically, the working logic of the collaborative control system 500 is as follows: Feedforward control: After receiving data from the front detection module 610 or the human-machine interface 700, the system calls the built-in material database and, in conjunction with the set target thickness, automatically calculates or calls the initial roll gap, pressure value and roll temperature parameters required between the two rollers 310.

[0036] Closed-loop regulation: During the rolling process, the thickness data of the electrode sheet is fed back in real time through the post-detection module 620. If a thickness deviation or a deviation in the degree of compaction is detected, the system immediately fine-tunes the roller gap through the displacement adjustment mechanism to ensure that the thickness of the final product is consistent, or alarms and stops the continued operation of the device to reduce the generation of subsequent waste products.

[0037] Cutting synchronization: The rotation angle or phase of the roller is monitored in real time by a position detection unit installed on the roller cylinder 310 or the rotating shaft. The cutting trigger timing is precisely set by integrating the signals from the position detection unit of the coordinated control system 500, the speed of the conveying mechanism 200, and the roller speed. The calculation program can be set according to the mature rotary die-cutting technology on the market, which will not be elaborated here and will not affect the specific implementation by relevant personnel.

[0038] In one specific embodiment, the intelligent roller pressing and cutting integrated device provided in this application has at least the following two working modes: Synchronous cutting mode: The adjustable roller pressing unit 300 contains only a pair of roller pressing cylinders 310 that can move relative to each other in the vertical direction. The adjustable roller pressing unit 300 works synchronously with the dynamic cutting unit, and completes the rolling and cutting in one pass. Step-by-step cutting mode: The adjustable roller pressing unit 300 includes at least two pairs of roller pressing cylinders 310 that can move relative to each other in the vertical direction. Multiple sets of roller pressing cylinders 310 are arranged in a front-to-back array along the feeding direction of the electrode sheet to be processed. Among them, multiple sets of roller pressing cylinders 310 located at the previous station are used to complete the rolling work alone, while a set of roller pressing cylinders 310 located at the last station completes the cutting work together with the dynamic cutting unit.

[0039] In one specific embodiment, the timing control of the collaborative control system 500 when the dynamic cutting unit performs the cutting work in the synchronous cutting mode is as follows: The electrode to be processed enters the roll gap area between the two rollers 310 under the linear conveying of the conveying mechanism 200 to begin rolling. At the same time, the position detection unit continuously reports the precise absolute phase of the upper roller to the collaborative control system 500. When the target cutting area of ​​the electrode to be processed is about to reach a predetermined position before the pressure peak area, which is the line connecting the centers of the two rollers, under the rotational traction of the roller 310, the collaborative control system 500 will call the corresponding die-cutting pattern pre-stored in the system and control the corresponding ejector pins to quickly protrude to the predetermined working height. These ejector pins will protrude to the set height in a short time, forming a stable corresponding punch profile on the roller surface that is consistent with the target shape. Subsequently, as the roller continues to rotate slightly, when the target cutting area enters the pressure peak area, the punch area also enters the high pressure zone of the roller gap as the roller rotates. At this time, the huge main pressure of the roller will act on the electrode through this punch to complete the shearing and punching of the electrode. After the blanking action is completed, just before the punch area moves away from the roll gap with the roller and is about to contact the new electrode sheet again, the collaborative control system 500 instructs the corresponding ejector pin to quickly retract, restoring the roller surface to flatness and preparing for the next cutting cycle. At the same time, the thickness of the rolled and cut area is continuously monitored by a rear-mounted ultrasonic thickness gauge, and the data is fed back to the collaborative control system 500 to perform corresponding dynamic closed-loop adjustments to the roll gap and compensate for process fluctuations.

[0040] Furthermore, in the step-by-step cutting mode, the adjustable roller pressing unit 300 includes two or more pairs of roller pressing cylinders 310 arranged back and forth along the feeding direction. The roller surfaces of the first few pairs of roller pressing cylinders 310 are pure smooth cylindrical surfaces, or the programmable pin arrays therein no longer protrude. Their function is dedicated to rolling the electrode sheet until it reaches the target thickness. The last pair of roller pressing cylinders 310 performs synchronous cutting, integrating a dynamic cutting unit 400 and receiving corresponding control from the collaborative control system 500 to cut the rolled electrode sheet.

[0041] In this mode, the electrode sheet is first compacted to the corresponding thickness by the roller pressing cylinder 310 in the preceding section. After being stabilized by the intermediate section, it enters the final roller pressing cylinder 310. At this time, the collaborative control system 500 confirms the final thickness measurement result and controls the programmable ejector array 410 on the final roller pressing cylinder 310 to perform only the high-precision cutting function. This mode is more suitable for process scenarios where the thickness consistency requirement is high or where rolling and cutting need to be treated as two independent and adjustable processes.

[0042] Specifically, such as Figure 1 and Figure 2 As shown, in one embodiment of this application, the adjustable roller pressing unit 300 includes only a pair of roller pressing cylinders 310 arranged vertically. The conveying mechanism 200 is symmetrically arranged on the front and rear sides of the two roller pressing cylinders 310. The front detection module 610 and the rear detection module 620 are also symmetrically arranged on the front and rear sides of the two roller pressing cylinders 310, respectively. The upper roller pressing cylinder is driven by a high-rigidity displacement adjustment mechanism composed of a servo motor and a ball screw pair or a hydraulic drive system, so that it can be vertically raised and lowered at the micron level in the vertical direction perpendicular to the feeding direction, thereby precisely adjusting the roller gap between it and the corresponding lower roller pressing cylinder. A rotary drive mechanism consisting of a servo motor and a reduction gear drives one or more rollers 310 to rotate actively, and the two rollers 310 rotate in opposite directions. When the rotary drive mechanism drives only one roller 310 to rotate, it can also be connected to the other roller 310 through a corresponding synchronous belt drive assembly to ensure that the upper and lower rollers operate synchronously in opposite directions, forming a rolling traction on the electrode sheet.

[0043] like Figure 3As shown, in another embodiment of this application, the adjustable roller pressing unit 300 includes two sets of roller pressing cylinders 310 arranged vertically opposite each other in a front-to-back array, divided into a front station and a rear station. The conveying mechanism 200 is symmetrically arranged on the front and rear sides of the two sets of roller pressing cylinders 310. The front detection module 610 is located on the front side of one set of roller pressing cylinders 310 at the front station. At least one rear detection module 620 is provided, and multiple rear detection modules 620 are respectively provided on the corresponding rear sides of the two sets of roller pressing cylinders 310. When only one rear detection module 620 is provided, it is located between the two sets of roller pressing cylinders 310 to detect whether the thickness of the electrode sheet meets the standard after roller pressing. The remaining settings can remain unchanged from the previous embodiment.

[0044] This application also provides a roll forming method based on any one of the above-mentioned intelligent roll forming and cutting integrated devices, including: Step S1: Place the coated and dried strip electrode sheet onto the conveying mechanism 200; Step S2: Set the target thickness and cutting shape through the collaborative control system 500; Step S3: Start the device, and the conveying mechanism 200 feeds the electrode sheet into the adjustable roller pressing unit 300; Step S4: The adjustable rolling unit 300 rolls the electrode sheet, and at the same time, the dynamic cutting unit, under the precise timing control of the collaborative control system 500, synchronously completes the punching of the electrode sheet during the rolling process. Step S5: Output a monolithic electrode with the target thickness and specific shape.

[0045] Specifically, the intelligent roller pressing and cutting integrated device provided in this application embodiment can achieve the same technical effect by executing the above-described roller pressing and cutting method, which will not be repeated here.

[0046] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and 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, and therefore should not be construed as a limitation of this application.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0049] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0050] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An intelligent roller pressing and cutting integrated device, characterized in that, include: body; A conveying mechanism, mounted on the machine body, is used to transport the electrode sheets to be processed along the feeding direction; An adjustable roller pressing unit is disposed on the transmission path of the conveying mechanism for pressing the electrode sheet to be processed, and includes at least one pair of roller pressing cylinders that can move relative to each other in the vertical direction to adjust the roller gap. A dynamic cutting unit, integrated on the adjustable roller pressing unit, is disposed on the roller surface of at least one of the roller pressing cylinders, including a plurality of programmable ejector pin arrays arranged in an array; The collaborative control system is communicatively connected to the conveying mechanism, the adjustable roller pressing unit, and the dynamic cutting unit, respectively. The collaborative control system can control the programmable ejector array to selectively protrude according to control commands, so as to form a cutting punch on the roller surface of the roller pressing cylinder, and punch the electrode sheet during or after roller pressing.

2. The intelligent roller pressing and cutting integrated device according to claim 1, characterized in that, The adjustable roller pressing unit further includes: A rotary drive mechanism, connected to the roller cylinder drive, is used to drive the roller cylinder to rotate; A displacement adjustment mechanism is connected to at least one of the two rollers and is used to drive the rollers to move in a vertical direction perpendicular to the feeding direction in order to adjust the gap between the two rollers.

3. The intelligent roller pressing and cutting integrated device according to claim 2, characterized in that, It also includes a thickness detection system, which comprises: The pre-detection module, located on the feed side of the adjustable roller pressing unit, is used to detect the initial thickness and material composition of the electrode sheet to be processed. The post-detection module is located on the discharge side of the roller pressing cylinder and is used to detect the actual thickness of the electrode sheet after roller pressing. The collaborative control system can receive detection data from the front detection module, perform feedforward control to set initial rolling parameters, and receive detection data from the rear detection module to perform feedback correction to dynamically adjust the rolling parameters.

4. The intelligent roller pressing and cutting integrated device according to claim 3, characterized in that, The front-end detection module includes a through-beam laser displacement sensor array and a near-infrared spectrometer, and the rear-end detection module is at least one ultrasonic thickness gauge.

5. The intelligent roller pressing and cutting integrated device according to claim 4, characterized in that, The programmable ejector pin array is uniformly distributed in a matrix on the roller surface corresponding to the roller cylinder, wherein the spatial resolution of a single ejector pin is no greater than 0.1 mm; The ejector pins in the programmable ejector pin array are electromagnetically driven micro ejector pins, and the base of the ejector pin is a hard alloy with a wear-resistant coating on its end face.

6. The intelligent roller pressing and cutting integrated device according to claim 5, characterized in that, The device also includes a position detection unit for real-time monitoring of the rotation angle or rotation phase of the roller cylinder and transmitting the detection signal to the collaborative control system. The collaborative control system can dynamically calculate and compensate for the triggering timing and pin protrusion position of the dynamic cutting unit based on the detection signal of the position detection unit, the transmission speed of the conveying mechanism, and the rotation speed of the roller pressing cylinder, so as to ensure the accurate physical position of the cutting shape on the electrode sheet.

7. The intelligent roller pressing and cutting integrated device according to claim 6, characterized in that, The device has at least two operating modes: Synchronous cutting mode: The adjustable roller pressing unit contains only a pair of roller pressing cylinders that can move relative to each other in the vertical direction. The adjustable roller pressing unit works synchronously with the dynamic cutting unit, and the roller pressing and cutting are completed in one pass. Step-by-step cutting mode: The adjustable roller pressing unit includes at least two pairs of roller pressing cylinders that can move relative to each other in the vertical direction. Multiple sets of roller pressing cylinders are arranged in a front-to-back array along the feeding direction of the electrode to be processed. Among them, multiple sets of roller pressing cylinders located at the previous station are used to complete the roller pressing work alone, while a set of roller pressing cylinders located at the last station completes the cutting work together with the dynamic cutting unit.

8. The intelligent roller pressing and cutting integrated device according to claim 7, characterized in that, The collaborative control system controls the dynamic cutting unit to perform the following actions when executing the cutting work, based on the detection signal from the position detection unit: Before the target cutting area of ​​the electrode to be processed rotates with the roller pressing cylinder to the peak area of ​​the roller gap pressure between the two roller pressing cylinders, the corresponding ejector pins in the programmable ejector pin array are controlled to protrude sequentially to a preset height to form the corresponding punch profile. When the punch contour and the target cutting area of ​​the electrode to be processed enter the peak area of ​​the roll gap pressure as the roller cylinder rotates, the punching is completed with the help of the roll pressure. After the blanking is completed, the corresponding ejector pin is controlled to retract before it contacts the electrode sheet again as the roller rotates.

9. The intelligent roller pressing and cutting integrated device according to claim 1, characterized in that, The machine body is also equipped with a human-machine interface, and the collaborative control system is pre-loaded with various cutting pattern data and material parameter data.

10. The roll forming method of the intelligent roll forming and cutting integrated device according to any one of claims 1-9, characterized in that, Including the following steps: S1: Place the coated and dried strip of electrode sheet onto the conveying mechanism; S2: Set the target thickness and cutting shape through the collaborative control system; S3: Start-up device, conveyor mechanism feeds the electrode sheet into the adjustable roller pressing unit; S4: The electrode sheet is rolled by an adjustable rolling unit. At the same time, under the control of the collaborative control system, the electrode sheet is punched by a dynamic cutting unit during or after the rolling process. S5: Outputs a single electrode sheet with a target thickness and a specific shape.

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