A high-speed flexible sheet material attaching device applied to 3C lithium batteries

Abstract

The utility model relates to 3C lithium electricity production equipment technical field, and disclose a kind of high-speed flexible sheet material attaching equipment applied to 3C lithium electricity, including rack and integrated on rack's feeding module, material taking positioning module, attaching module, transfer module, discharging module, rolling module, waste treatment module and control system, control system and each module electric connection realizes automation control.Four independent material bin feeding is supported by feeding module and supports non-stop feeding;Material taking positioning module completes material grabbing, accurate positioning and release paper stripping;Attaching module alternately works with double four-axis robot, and high-precision flat paste is realized in combination with variable distance vision module and static bar removal;Transfer module drives carrier to move battery;Rolling module guarantees attaching flatness;Waste treatment module automatically collects and cleans waste;Equipment also supports quick die changing.It realizes full-process automation, improves operation efficiency and attaching precision, and adapts to multi-specification production demand.

Description

Technical Field

[0001] This utility model belongs to the technical field of 3C lithium battery production equipment, specifically relating to a high-speed flexible sheet bonding equipment for 3C lithium batteries. Background Technology

[0002] Against the backdrop of the rapid development of the 3C lithium battery industry, lithium batteries, as core energy storage components, require labeling, protection, and performance optimization through the application of labels or functional films (such as KP and PET materials) during their production process. The precision and efficiency of this labeling process directly affect the quality and production capacity of lithium battery products.

[0003] Currently, there are two main implementation methods for lithium battery flat bonding operations: First, some small and medium-sized enterprises still rely on manual operation, manually grabbing the bonding material, positioning the battery, and then manually bonding it. This not only makes it difficult to guarantee bonding repeatability (manual operation accuracy is usually only ±0.2mm or more), but also only one battery can be processed at a time, with UPH (upper capacity per hour) generally below 200 sets, which cannot meet the needs of large-scale mass production. Second, some enterprises have introduced simple automated equipment, but the equipment mostly adopts a single-module independent operation design. The connection between processes such as feeding, picking, and bonding depends on manual assistance, and there is a lack of flexible mold changing structure. When it is necessary to switch to different specifications of batteries or bonding materials, the changeover time is as long as 30 minutes or more, which is difficult to adapt to the production scenario of multiple varieties and small batches.

[0004] Existing automated flat-laying equipment has significant deficiencies in its core functions: First, it lacks sufficient control over the bonding precision. Most equipment is not equipped with high-precision visual positioning and static elimination systems, relying solely on mechanical positioning structures. This makes it susceptible to factors such as electrostatic adsorption of the bonding material and mechanical gaps, leading to frequent bonding misalignment, wrinkles, or bubbles. The CPK (process capability index) is often below 1.33, failing to meet the precision manufacturing requirements of the 3C lithium battery industry. Second, the automation level of material supply and waste disposal is low. The feeding module is mostly designed with a single material bin, requiring a shutdown for replenishment after material depletion, interrupting the production process. Furthermore, the release paper waste after peeling requires manual cleaning inside the equipment, increasing operational risks and wasting time. Third, the equipment coordination is poor. The transfer module mostly uses fixed tracks and a single drive structure, failing to achieve continuous and precise transfer of batteries between multiple workstations. Moreover, there is a delay in the connection between the transfer module and the bonding module, further reducing production efficiency. Utility Model Content

[0005] The present invention aims to solve the technical problem in the prior art that battery flat-mounting operations rely on manual labor or simple automated equipment, resulting in low production efficiency, poor mounting accuracy, and difficulty in adapting to the production of multi-specification products.

[0006] At the same time, it solves the technical problems of disjointed process connections in existing equipment, cumbersome waste disposal and mold changing operations, and lack of effective quality control methods, which cannot meet the technical needs of precision and large-scale production of 3C lithium batteries.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A high-speed flexible sheet bonding equipment for 3C lithium batteries includes a frame and a feeding module, a material picking and positioning module, a bonding module, a transfer module, a unloading module, a rolling module, a waste material handling module and a control system integrated on the frame.

[0009] The feeding module stores and supplies KP or PET bonding materials of different specifications through four independent hoppers that can move left and right;

[0010] The material picking and positioning module uses a material picking and attaching mechanism to grab the attaching material from the hopper and transfer it to a secondary positioning mechanism for precise fixing. Then, the release paper is peeled off by a release paper peeling mechanism.

[0011] The bonding module uses two four-axis robots to work alternately, combined with a variable distance vision module to complete the photographing and positioning of the bonding material and the static electricity removal process, so as to achieve high-precision flat bonding operation.

[0012] The transfer module drives the carrier through the linear module V, which sequentially transfers the battery products to the loading, attaching, rolling and unloading stations. When changing models, the upper CCD module is used to calibrate the carrier coordinates.

[0013] The unloading module consists of a four-axis robot that picks up and unloads the attached battery products after the carrier moves to the unloading position;

[0014] The rolling module drives the pressure roller through the pressure roller cylinder to roll the attached product, avoiding hard contact while ensuring flatness of the attachment.

[0015] The waste disposal module collects the release paper waste after peeling through a waste bin, and can push the waste bin to the door side through the ejection cylinder for easy cleaning by personnel;

[0016] The control system includes a PLC and a touch screen. The control system is electrically connected to the feeding module, material picking and positioning module, attaching module, transfer module, unloading module, rolling module, and waste disposal module to achieve automated control; ensuring the efficiency and accuracy of automated operation, while supporting quick mold change parameter adjustment.

[0017] This high-speed flexible sheet bonding equipment for 3C lithium batteries achieves a fully automated process from material storage, gripping and positioning, high-precision bonding to product unloading and waste disposal through the collaborative work of multiple modules. It not only improves work efficiency and bonding accuracy, but also supports quick mold change to adapt to different production requirements.

[0018] Preferably, the feeding module includes four independent hoppers, which are arranged in an upper and lower layer and slide on a sliding rail set on the frame. The independent hoppers are fixedly connected to the slide seat I of the rodless cylinder fixed on the frame through connecting blocks. The four independent hoppers of the feeding module are arranged in two layers and moved along the sliding rail by the rodless cylinder, which can efficiently store the bonding material and facilitate flexible adjustment of the position to meet the feeding requirements without stopping the machine.

[0019] Preferably, the material picking and positioning module includes a material picking and attaching mechanism, a secondary positioning mechanism, and a release paper tearing mechanism. The material picking and attaching mechanism includes a translation module I fixed on the frame and located above the feeding module, a Z-axis module fixedly connected to a moving seat I on the translation module I, a quick-change plate fixed to the bottom of the lifting seat of the Z-axis module, and a material picking suction cup located at the bottom of the quick-change plate. The material picking and attaching mechanism of the material picking and positioning module can move in multiple directions through the translation module I and the Z-axis module. With the quick-change plate and the material picking suction cup, it can quickly and stably grab the attaching material and transfer it to the subsequent work station, improving the flexibility and efficiency of material picking.

[0020] Preferably, the secondary positioning mechanism is equipped with positioning pins that precisely align with the positioning holes of the adhesive material and establish vacuum adsorption. The release paper tearing mechanism includes a left peeling gripper, a right peeling gripper, and upper and lower cylinders fixed at the center of the frame. The secondary positioning mechanism is located at the piston rod end of the upper and lower cylinders. The left and right peeling grippers are located on both sides of the secondary positioning mechanism and on the movable seat II of the transverse linear module I at the top of the frame. The secondary positioning mechanism ensures accurate positioning of the adhesive material by means of positioning pins and vacuum adsorption. The release paper tearing mechanism can stably clamp and peel the release paper by means of the cooperation between the left and right peeling grippers and the upper and lower cylinders, ensuring the subsequent adhesive quality.

[0021] The left and right peeling jaws are respectively mounted on the rotating seat of the rotary cylinder. The rotary cylinder is fixed on the moving seat II of the horizontal linear module. The release paper is completely peeled off by rotating the left and right peeling jaws in conjunction with the descent of the upper and lower cylinders. The left and right peeling jaws, combined with the rotation of the rotary cylinder and the descent of the upper and lower cylinders, can completely peel off the release paper and avoid release paper residue affecting the bonding effect.

[0022] Preferably, the bonding module includes a left four-axis robot, a right four-axis robot, a variable-distance vision module, and an anti-static bar mounted on the frame. The two left and right four-axis robots alternately perform bonding operations. After picking up the material, they move it to the variable-distance vision module for photo positioning. After taking the photo, the anti-static bar blows ion air to eliminate static electricity before the bonding operation is performed. The bonding module uses two four-axis robots to work alternately to improve efficiency, and the variable-distance vision module achieves precise positioning. Combined with the anti-static bar to eliminate static interference, it effectively ensures the accuracy and stability of the bonding operation.

[0023] As a preferred option, the variable-distance vision module uses two 2D cameras and a linear module with positive and negative threaded rods on the top of the frame to form a variable-torque imaging structure. The two 2D cameras are mounted on two moving seats III on the linear module with positive and negative threaded rods that are relatively close or far apart. The variable-distance vision module drives the two 2D cameras to move relative to each other or in opposite directions through the linear module with positive and negative threaded rods, which can flexibly adapt to the imaging and positioning requirements of different specifications of attached materials and enhance the versatility of the equipment.

[0024] Preferably, the transfer module includes a linear module V and a carrier mounted on a movable seat of the linear module V. After the upstream handling mechanism places 2 PCS battery products into the carrier, the linear module V drives the carrier to move sequentially to the loading position, the left four-axis robot attachment position, the right four-axis robot attachment position, the rolling station, and the unloading position. The frame is also equipped with an upper CCD module. When changing products, the upper CCD module takes pictures and positions the carrier, and uploads the new carrier coordinate data to the robot. During normal production, it is in a silent state. The transfer module drives the carrier to sequentially transfer batteries to each station through the linear module V. The upper CCD module can also calibrate the carrier coordinates when changing products, which not only ensures production continuity but also improves the accuracy of operation after changing products.

[0025] Preferably, the rolling module includes two pressure roller cylinders located above the linear module V and pressure rollers A and B respectively installed at the piston rod ends of the two pressure roller cylinders. The two pressure roller cylinders of the rolling module drive pressure rollers A and B respectively, which can perform double rolling on the attached product to further ensure the flatness of the attachment.

[0026] Preferably, the unloading module includes a four-axis unloading robot mounted on the frame. When the carrier moves to the unloading position, the four-axis unloading robot grabs the attached battery product for unloading. Then, the carrier is driven by the linear module V to reset to the loading position to wait for the next round of operation. The unloading module's four-axis unloading robot can quickly grab the finished product for unloading when the carrier arrives at the unloading position. At the same time, the carrier can automatically reset, ensuring a smooth and efficient production process.

[0027] Preferably, the waste disposal module includes a waste bin and an ejection cylinder mounted on the frame. The waste bin is mounted on the moving slide of the ejection cylinder. The waste disposal module can push the waste bin to the door edge by the cylinder drive, which makes it convenient for staff to clean up release paper waste and reduces the difficulty of operation.

[0028] Compared with the prior art, the technical effects and advantages of this utility model are:

[0029] The utility model realizes full automation of the battery flat bonding process. Through the collaborative work of modules such as feeding, material picking and positioning, bonding, transfer, unloading, rolling, and waste disposal with the control system, it can be completed automatically from the storage and supply of bonding materials to the unloading of finished products and the cleaning of waste materials without frequent human intervention. This greatly reduces the number of manual operation links, effectively improves the overall production efficiency, avoids the errors caused by manual operation, and ensures the stability of operation.

[0030] The material picking and positioning module achieves precise fixing of the bonding material through a secondary positioning mechanism. The bonding module, combined with a variable distance vision module and static elimination treatment, works with dual four-axis robots to accurately control the bonding position and reduce problems such as bonding offset and wrinkles. The rolling module further ensures bonding flatness, improves the overall battery bonding quality, and meets the needs of precision production.

[0031] This utility model has good production adaptability and flexibility, supports quick mold change function, and the mold change related components adopt quick-change structure design, which can quickly adapt to different specifications of bonding materials and battery products without complicated disassembly operations; the multi-independent material bin design of the feeding module can be compatible with a variety of bonding materials and specifications, meet the production scenarios of multiple varieties and multiple batches, and reduce the difficulty of equipment switching production tasks.

[0032] The waste disposal module can automatically push the waste bin to the door for easy cleaning by personnel without having to go inside the equipment, thus reducing safety risks. The control system allows for parameter adjustment and equipment monitoring via a touch screen, making operation intuitive and simple. The operating status of each module can be monitored in real time, facilitating timely detection and handling of anomalies and improving the ease of use and operational reliability of the equipment. Attached Figure Description

[0033] Figure 1 This is a first-view diagram of the present invention;

[0034] Figure 2 This is a second-view diagram of the present invention;

[0035] Figure 3 This is a structural schematic diagram of the feeding module and the material picking and attaching mechanism of this utility model;

[0036] Figure 4 This is a schematic diagram of the internal structure of the present invention;

[0037] Figure 5 This is a schematic diagram of the left and right four-axis robots of this utility model after disassembly.

[0038] Figure 6 This is a schematic diagram of the variable-distance vision module and the anti-static bar of this utility model;

[0039] Figure 7 This is a structural schematic diagram of the transfer module, unloading module, rolling module, and upper CCD module of this utility model;

[0040] Figure 8 This is a schematic diagram of the secondary positioning mechanism and the release paper tearing mechanism of this utility model;

[0041] Figure 9 This is a schematic diagram of the waste treatment module of this utility model.

[0042] In the picture:

[0043] 1. Feeding module; 101. Hopper; 102. Sliding rail; 103. Connecting block; 104. Rodless cylinder; 105. Slide I;

[0044] 2. Material Picking and Positioning Module; 201. Material Picking and Attaching Mechanism; 202. Secondary Positioning Mechanism; 203. Release Paper Peeling Mechanism; 204. Translation Module I; 205. Moving Seat I; 206. Z-Axis Module; 207. Lifting Seat; 208. Quick Change Plate; 209. Material Picking Suction Cup; 210. Left Peeling Gripper; 211. Right Peeling Gripper; 212. Lateral Linear Module I; 213. Upper and Lower Cylinders; 214. Moving Seat II; 215. Rotary Cylinder; 216. Positioning Pin;

[0045] 3. Attachment module; 301. Left four-axis robot; 302. Right four-axis robot; 303. Variable distance vision module; 304. Antistatic bar; 305. 2D camera; 306. Positive and negative threaded linear module; 307. Moving base III;

[0046] 4. Transfer module; 401. Linear module V; 402. Vehicle;

[0047] 5. Unloading module; 501. Unloading four-axis robot;

[0048] 6. Rolling module; 601. Pressure roller cylinder; 602. Pressure roller A; 603. Pressure roller B;

[0049] 7. Waste processing module; 701. Waste bin; 702. Exit cylinder; 703. Moving slide;

[0050] 8. Control system; 801. PLC; 802. Touch screen;

[0051] 9. Rack;

[0052] 10. Install the CCD module. Detailed Implementation

[0053] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0054] The following combination Figures 1 to 9 This application will be described in further detail;

[0055] This application discloses a high-speed flexible sheet bonding device for 3C lithium batteries, including a frame 9 and a feeding module 1, a picking and positioning module 2, a bonding module 3, a transfer module 4, a unloading module 5, a rolling module 6, a waste disposal module 7 and a control system 8 integrated on the frame 9. The control system 8 is electrically connected to the feeding module 1, the picking and positioning module 2, the bonding module 3, the transfer module 4, the unloading module 5, the rolling module 6 and the waste disposal module 7 to realize automated control.

[0056] The feeding module 1 stores and supplies different specifications of KP or PET bonding materials through four independent, left-right movable hoppers 101, and uses sensors to achieve material shortage alarms and non-stop feeding. The picking and positioning module 2 uses a picking mechanism to grab the bonding material from the hopper 101 and transfer it to the secondary positioning mechanism 202 for precise fixing. Then, the release paper is peeled off by the release paper peeling mechanism 203, while monitoring the picking status and handling abnormalities. The bonding module 3 uses two four-axis robots to work alternately, combined with a variable distance vision module 303 to complete the photographing and positioning of the bonding material and the static electricity removal treatment, achieving high-precision flat bonding operation. The transfer module 4 uses a linear module V 401 to drive the carrier 402, which sequentially transfers the battery products to the feeding, bonding, rolling and unloading stations. During changeover, the upper CCD module 10 is used to calibrate the coordinates of the carrier 402. The unloading module 5, operated by a four-axis robot 501, picks up and unloads the battery product after the carrier 402 moves to the unloading position, then resets the carrier 402. The rolling module 6, driven by a pressure roller cylinder 601 with a spring buffer mechanism, rolls the attached product, avoiding hard contact and ensuring flatness. The waste disposal module 7 collects the release paper waste in a waste bin 701, which can be pushed to the door by a retraction cylinder 702 for easy cleaning. The control system 8, relying on a specific brand of PLC 801 and touch screen 802, provides unified electrical connection and control for all modules, ensuring automated operation efficiency and accuracy, while also supporting rapid mold change parameter adjustments.

[0057] The entire equipment is automated through multi-module collaboration and a unified control system, realizing full-process automation of material storage, gripping and positioning, high-precision application, product transfer, unloading and waste disposal. It balances work efficiency, application accuracy and quick mold change capability, and adapts to different production needs.

[0058] The external dimensions of the frame 9 are 2100mm long × 1800mm wide × 2200mm high when including the 200mm docking length, and 1900mm long × 1800mm wide × 2200mm high when excluding the docking length. The estimated weight of the equipment is 1600kg. The operating surface of the frame 9 is aligned with the front machine through the transfer module to achieve seamless docking.

[0059] The frame features a flexible 9-size design (with / without adjustable docking length) to suit different workshop layouts; it is stable in weight and structure, and can be seamlessly connected to the front machine via the transfer module, ensuring a continuous production process and reducing material transfer gaps.

[0060] The feeding module 1 includes four independent hoppers 101. The four independent hoppers 101 are arranged in an upper layer and a lower layer and slide on the sliding rail 102 set on the frame 9. The independent hoppers 101 are respectively fixedly connected to the slide seat I 105 of the rodless cylinder 104 fixedly set on the frame 9 through the connecting block 103.

[0061] The material bin 101 has a maximum length of 400mm and a maximum width of 180mm. Each bin 101 can hold 200 pieces of adhesive material, with a total capacity of 800 pieces. The adhesive material size range that bin 101 is compatible with is 171mm to 370mm in length, 40.6mm to 118mm in width, and 0.07mm or 0.1mm in thickness. It is also compatible with rolls or sheets of KP and PET materials. Each bin 101 is equipped with a product presence sensor at the bottom. When the material in a single bin 101 is used up, the equipment issues an empty material alarm for the corresponding location. When all the material is about to be used up, a material shortage warning is issued. At the same time, bin 101 can move left and right to achieve non-stop feeding.

[0062] The four-layer independent hoppers 101 have a large capacity (total 800pcs) and are suitable for various sizes and materials of adhesive materials. The rodless cylinder 104 drives the hoppers 101 to move along the sliding rail 102. With the help of sensors, it realizes material shortage warning and non-stop material feeding, reduces production interruption, and improves the flexibility and continuity of material supply.

[0063] The material picking and positioning module 2 includes a material picking and attaching mechanism 201, a secondary positioning mechanism 202, and a release paper tearing mechanism 203; the material picking and attaching mechanism 201 includes a translation module I 204 fixed on the frame 9 and located above the feeding module 1, a Z-axis module 206 fixedly connected to a movable seat I 205 on the translation module I 204, a quick-change plate 208 fixed at the bottom of the lifting seat 207 of the Z-axis module 206, and a material picking suction cup 209 located at the bottom of the quick-change plate 208;

[0064] The secondary positioning mechanism 202 is equipped with a positioning pin 216, which precisely overlaps with the positioning hole of the attached material and establishes vacuum adsorption; the release paper tearing mechanism 203 includes a left peeling claw 210, a right peeling claw 211 and an upper and lower cylinder 213 fixed at the center of the frame 9, and the secondary positioning mechanism 202 is located at the piston rod end of the upper and lower cylinder 213; the left peeling claw 210 and the right peeling claw 211 are respectively located on both sides of the secondary positioning mechanism 202 and on the moving seat II 214 of the transverse linear module I 212 at the top of the frame 9;

[0065] The release paper for the adhesive material is designed with a middle cut structure. The release paper gripping position extends at least 6.0 mm beyond the adhesive material. The left peeling claw 210 and the right peeling claw 211 are respectively set on the rotating seat of the rotary cylinder 215. The rotary cylinder 215 is fixed on the moving seat II 214 of the transverse linear module. The release paper is completely peeled off by the rotation peeling of the left peeling claw 210 and the right peeling claw 211 in conjunction with the descent of the upper and lower cylinders 213.

[0066] The material handling mechanism achieves precise multi-directional movement through multiple modules, while the quick-change plate 208 and the material handling suction cup 209 ensure stable material handling. The secondary positioning mechanism 202 ensures accurate positioning of the attached material by using the positioning pin 216 and vacuum adsorption. The release paper tearing mechanism 203 completely peels off the release paper that has been cut in the middle by using the rotation of the grippers and the cooperation of the cylinder, laying the foundation for subsequent high-precision attachment.

[0067] A vacuum pressure gauge is installed near the material suction cup 209 to monitor the vacuum pressure in real time. If the material is picked up again after failure, it can be picked up 3 times. If it fails 3 times, the equipment will stop and alarm. The vacuum pressure gauge monitors the material picking status in real time. Multiple retries after material picking failure can reduce the impact of accidental errors. The shutdown alarm after retry failure can help troubleshoot the fault in time, avoid unqualified picking from causing abnormalities in subsequent processes, and ensure the reliability of material picking.

[0068] The attachment module 3 includes a left four-axis robot 301, a right four-axis robot 302, a variable distance vision module 303, and an anti-static rod 304, all mounted on the frame 9. The two left four-axis robots 301 and right four-axis robots 302 take turns performing attachment operations. After picking up the material, they move to the variable distance vision module 303 to take pictures and position it. After taking pictures, the anti-static rod 304 blows ion air to eliminate static electricity before performing the attachment operation.

[0069] Two four-axis robots work alternately to improve bonding efficiency; the variable distance vision module 303 achieves precise positioning, and the antistatic rod 304 eliminates electrostatic interference, effectively avoiding bonding misalignment and material adsorption problems caused by static electricity, ensuring bonding accuracy and quality.

[0070] The variable-distance vision module 303 uses two 2D cameras 305 and a linear module 306 with positive and negative threaded rods on the top of the frame 9 to form a variable-torque imaging structure. The two 2D cameras 305 are mounted on two moving seats Ⅲ 307 on the linear module 306, which are relatively close or far apart. The installation height of the 2D cameras 305 is 130±5mm, the field of view of a single camera is 50mm, the single pixel accuracy is 0.0092mm, and the membrane guidance accuracy is 0.04mm through 4 to 5 pixel compensation. The CT processing time for a single image is 0.5s; the attachment repeatability reaches ±0.07mm, and CPK>1.67.

[0071] The forward and reverse threaded linear module 306 drives two 2D cameras 305 to flexibly adjust the spacing to adapt to different specifications of bonding materials; the camera installation parameters and pixel compensation design achieve high film guiding accuracy (0.04mm) and fast image processing speed (0.5s), ultimately ensuring bonding repeatability accuracy (±0.02mm) and process capability (CPK>1.67), meeting the requirements of high-precision production.

[0072] The transfer module 4 includes a linear module V401 and a carrier 402 mounted on a movable seat of the linear module V401. The positioning accuracy of the carrier 402 is ±0.02mm. After the upstream handling mechanism places 2 PCS battery products into the carrier 402, the linear module V401 drives the carrier 402 to move sequentially to the loading position, the attachment position of the left four-axis robot 301, the attachment position of the right four-axis robot 302, the rolling station, and the unloading position. The frame 9 is also equipped with an upper CCD module 10. When changing products, the upper CCD module 10 takes pictures of the carrier 402 for positioning and uploads the new coordinate data of the carrier 402 to the robot. During normal production, it is in a silent state.

[0073] The linear module V401 drives the carrier 402 (positioning accuracy ±0.02mm) to orderly move the battery to each workstation, ensuring the continuity of the production process; the upper CCD module 10 calibrates the coordinates of the carrier 402 during the changeover, ensuring the attachment accuracy after the changeover, and the silence during normal production does not affect efficiency, taking into account both continuity and changeover adaptability.

[0074] The rolling module 6 includes two pressure roller cylinders 601 located above the linear module V401 and pressure rollers A602 and B603 correspondingly installed at the piston rod ends of the two pressure roller cylinders 601;

[0075] The two pressure rollers are driven by cylinders, which can perform double rolling on the finished product. Compared with a single pressure roller, it can more comprehensively eliminate the application of air bubbles and wrinkles, and further improve the flatness of the application.

[0076] Both pressure roller cylinders 601 are equipped with spring buffer mechanisms. When the linear module V401 moves the carrier 402 to the rolling station, the pressure roller cylinder 601 presses down, and the carrier 402 moves along the stroke to complete the rolling operation. After the operation is completed, the pressure roller cylinder 601 is raised, and the spring buffer avoids hard contact with the product.

[0077] The spring-cushioned design prevents the pressure roller from making hard contact with the battery product, thus preventing damage to the product or the attached material and protecting product quality while ensuring the rolling effect.

[0078] The unloading module 5 includes a four-axis unloading robot 501 mounted on the frame 9. When the carrier 402 moves to the unloading position, the four-axis unloading robot 501 grabs the attached battery product and unloads it. Then, the carrier 402 is driven by the linear module V401 to reset to the loading position to wait for the next round of operation.

[0079] The 501 four-axis unloading robot quickly grabs finished products and unloads them. The carrier 402 automatically resets to the loading position, allowing the next round of work to begin without manual intervention. This reduces manual operation time and improves unloading efficiency and the speed of the production process loop.

[0080] The waste handling module 7 includes a waste bin 701 and a retraction cylinder 702 mounted on the frame 9. The waste bin 701 is mounted on the movable slide 703 of the retraction cylinder (702). The waste bin 701 is used to collect release paper waste after peeling and is expected to be cleaned twice a day. During cleaning, the retraction cylinder 702 is controlled by the operation button to automatically retract the waste bin 701 to the door of the frame 9 for easy access and cleaning by personnel.

[0081] Waste bin 701 collects release paper waste in a centralized manner, reducing waste scattering; the exit cylinder 702 drives the waste bin 701 to move automatically to the door, eliminating the need for personnel to go deep into the equipment for cleaning, reducing the difficulty of operation and safety risks, and only requiring cleaning twice a day, reducing the interference of cleaning on production.

[0082] The equipment supports quick mold change functionality, with all mold change-related components employing a quick-change structure design: the material feeding hopper 101 is positioned by pins, and can be removed for replacement or off-line adjustment by releasing the quick-clamping mechanism, with a changeover time of approximately 1 minute; the material removal adsorption assembly is replaced via a quick-change mechanism in conjunction with electrical quick-plugging, with a changeover time of approximately 2 minutes; the material secondary positioning adsorption assembly uses the same quick-change structure, with a changeover time of approximately 3 minutes; the material removal adsorption assembly can be replaced on both sides in approximately 4 minutes; the carrier 402 has a quick-change time of approximately 3 minutes, and the total changeover time does not exceed 13 minutes.

[0083] All mold changing components adopt a quick-change structure, with short changeover time for each component (total ≤13 minutes). No complicated disassembly is required, and it can quickly adapt to different specifications of bonding materials and battery products, improving the equipment's response speed to multi-variety production and reducing mold changeover downtime.

[0084] The core components of the control system 8 include a PLC 801 and a touch screen 802. The PLC 801 uses Mitsubishi or Inovance brand components, and the touch screen 802 uses Weintek brand components. Among the equipment's drive components, the motors and reducers use JSCC or Liming brand components, and the servo motors use Mitsubishi or Inovance brand components. Low-voltage electrical appliances and various switches use Schneider brand components, sensor switches use Panasonic or OMRON brand components, linear guides / modules use HIWIN, TOYO, or MISUMI brand components, pneumatic / vacuum components use SMC, AirTAC, CHELIC, or PISCO brand components, and other standard parts use MISUMI or Yiheda brand components. The equipment has a UPH (upper capacity per hour) of 550 battery packs to meet production efficiency requirements. The use of well-known brands for core components ensures the stability and durability of the equipment. The 550 battery packs per UPH meet high production capacity requirements, and the control system 8 supports automated control and parameter adjustment, balancing efficiency, stability, and ease of operation.

[0085] The workflow of this high-speed flexible sheet bonding equipment used in 3C lithium batteries is as follows:

[0086] S1. Equipment Start-up and Parameter Initialization: Power on the high-speed flexible sheet bonding equipment for 3C lithium batteries. The control system 8 completes the start-up self-test using PLC 801 and touch screen 802. The operator confirms or adjusts parameters such as bonding accuracy and production rate on the touch screen 802 according to the production task. At the same time, ensure that each module is in the initial working position. If it is a product changeover scenario, complete the mold changeover operation in advance (the total changeover time shall not exceed 13 minutes).

[0087] S2. Material Preparation and Supply: KP or PET adhesive materials (rolls or sheets) are placed into the four independent hoppers 101 of the feeding module 1 according to specifications. The hoppers 101 are flexibly adjusted along the sliding rails 102 by rodless cylinders 104. A product presence sensor at the bottom of each hopper 101 monitors the material level in real time. The equipment sequentially selects hoppers 101 for feeding according to the program, achieving non-stop feeding. When a single hopper 101 is empty or the entire material is about to be used up, the equipment issues a corresponding alarm.

[0088] S3. Battery product loading and transfer start-up: The upstream handling mechanism puts 2 PCS battery products into the carrier 402 of the transfer module 4. The linear module V 401 receives the command from the control system 8 and drives the carrier 402 to carry the battery products to each workstation in sequence, first arriving at the attachment preparation position of the left four-axis robot 301.

[0089] S4. Adhesive Material Grabbing and Pre-processing: The adhesive material grabbing mechanism 201 of the material grabbing and positioning module 2, through the coordinated action of the translation module I 204 and the Z-axis module 206, drives the material grabbing suction cup 209 to grab the adhesive material from the hopper 101, and then transfers it to the secondary positioning mechanism 202. The secondary positioning mechanism 202 precisely aligns the positioning pin 216 with the positioning hole of the adhesive material and establishes vacuum adsorption to achieve fixation. Then, the release paper tearing mechanism 203 is activated. The left and right peeling claws 211, driven by the rotary cylinder 215, clamp the release paper (the clamping position extends no less than 6.0mm beyond the adhesive material). With the lowering action of the upper and lower cylinders 213, the middle-cut release paper is completely peeled off. The peeled release paper is then transferred to the waste processing module 7. The vacuum pressure gauge near the material grabbing suction cup 209 monitors the material grabbing status in real time. If the material grabbing fails, it can be repeated 3 times. If all 3 attempts fail, the equipment will stop and alarm.

[0090] S5. Precise Positioning and Static Elimination: The left four-axis robot 301 moves to the secondary positioning mechanism 202 to pick up the pre-treated bonding material, and then transfers it to the variable-distance vision module 303. This module adjusts the distance between the two 2D cameras 305 through the forward and reverse threaded linear module 306 to photograph and position the bonding material (single photograph processing CT time 0.5s, film guidance accuracy 0.04mm). After the photograph is completed, the static electricity on the material surface is eliminated by blowing ion air through the static elimination rod 304 to avoid static interference with the bonding effect.

[0091] S6. Attachment Operation Execution: The linear module V401 drives the carrier 402 to the attachment position of the left four-axis robot 301. The left four-axis robot 301 attaches the attachment material to the battery product with high precision according to the positioning data (attachment repeatability ±0.07mm, CPK>1.67). At the same time, the right four-axis robot 302 simultaneously executes another set of attachment material gripping, pre-processing, positioning, and static electricity removal processes. When the carrier 402 moves to the attachment position of the right four-axis robot 302, the second set of attachment operations is completed.

[0092] S7. Roller Pressing Reinforcement: After the bonding is completed, the linear module V401 drives the carrier 402 to move to the roller pressing station. The two pressure roller cylinders 601 of the roller pressing module 6 drive the pressure rollers A602 and B603 to press down. The carrier 402 moves along the stroke, and the pressure rollers perform double roller pressing on the bonded material to eliminate air bubbles and wrinkles. The spring buffer mechanism equipped with the pressure roller cylinder 601 avoids hard contact with the product, ensuring product quality. After the roller pressing is completed, the pressure roller cylinder 601 is lifted and reset.

[0093] S8. Finished Product Unloading and Carrier 402 Reset: Linear module V401 drives carrier 402 to the unloading position. The four-axis unloading robot 501 picks up the finished battery product that has been attached and rolled and transfers it to the designated unloading area. Then, linear module V401 drives the empty carrier 402 to reset to the loading position, waiting to receive the next batch of battery products and start a new production cycle.

[0094] S9. Waste Collection and Cleaning: The released paper waste after peeling is transferred to the waste bin 701 of the waste processing module 7 for centralized collection, and is expected to be cleaned twice a day. During cleaning, the operator presses the operation button, and the cylinder 702 drives the waste bin 701 on the moving slide 703 to automatically retreat to the side of the frame 9 for easy access and cleaning. After cleaning, the waste bin 701 resets and continues to collect waste.

[0095] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-speed flexible sheet bonding device for 3C lithium batteries, characterized in that, It includes a frame (9) and an integrated loading module (1), a material picking and positioning module (2), an attaching module (3), a transfer module (4), a unloading module (5), a rolling module (6), a waste material handling module (7), and a control system (8) on the frame (9); The feeding module (1) stores and supplies KP or PET adhesive materials of different specifications through four independent hoppers (101) that can move left and right; The material picking and positioning module (2) uses the material picking and attaching mechanism (201) to pick up the attaching material from the hopper (101) and transfer it to the secondary positioning mechanism (202) for precise fixing, and then uses the release paper peeling mechanism (203) to peel off the release paper; The attaching module (3) uses two four-axis robots to work alternately, and combines the variable distance vision module (303) to complete the photo positioning and static electricity removal of the attaching material, so as to achieve high-precision flat attaching operation; The transfer module (4) drives the carrier (402) through the linear module V (401) to sequentially transfer the battery products to the loading, attaching, rolling and unloading stations. When changing models, the upper CCD module (10) is used to calibrate the coordinates of the carrier (402). The unloading module (5) is operated by a four-axis unloading robot (501) that moves to the unloading position on the carrier (402), grabs the attached battery products and unloads them; The rolling module (6) drives the pressure roller through the pressure roller cylinder (601) to roll the finished product, avoiding hard contact while ensuring the flatness of the application. The waste disposal module (7) collects the release paper waste after peeling through the waste bin (701), and can push the waste bin (701) to the door side through the ejection cylinder (702) for easy cleaning by personnel; The control system (8) includes a PLC (801) and a touch screen (802). The control system (8) is electrically connected to the feeding module (1), the picking and positioning module (2), the attaching module (3), the transfer module (4), the unloading module (5), the rolling module (6), and the waste disposal module (7) to achieve automated control; ensure the efficiency and accuracy of automated operation, and support quick mold change parameter adjustment.

2. The high-speed flexible sheet bonding equipment for 3C lithium batteries according to claim 1, characterized in that: The feeding module (1) includes four independent hoppers (101). The four independent hoppers (101) are arranged in an upper layer and a lower layer and slide on the sliding rail (102) set on the frame (9). The independent hoppers (101) are respectively fixedly connected to the slide block I (105) of the rodless cylinder (104) fixedly set on the frame (9) through the connecting block (103).

3. The high-speed flexible sheet bonding equipment for 3C lithium batteries according to claim 1, characterized in that: The material picking and positioning module (2) includes a material picking and attaching mechanism (201), a secondary positioning mechanism (202), and a release paper tearing mechanism (203); the material picking and attaching mechanism (201) includes a translation module I (204) fixed on the frame (9) and located above the feeding module (1), a Z-axis module (206) fixedly connected to the moving seat I (205) on the translation module I (204), a quick change plate (208) fixed at the bottom of the lifting seat (207) of the Z-axis module (206), and a material picking suction cup (209) located at the bottom of the quick change plate (208).

4. The high-speed flexible sheet bonding equipment for 3C lithium batteries according to claim 3, characterized in that: The secondary positioning mechanism (202) is equipped with a positioning pin (216) to precisely overlap with the positioning hole of the attached material and establish vacuum adsorption; the release paper mechanism (203) includes a left peeling gripper (210), a right peeling gripper (211) and an upper and lower cylinder (213) fixed at the center of the frame (9), and the secondary positioning mechanism (202) is located at the piston rod end of the upper and lower cylinder (213); the left peeling gripper (210) and the right peeling gripper (211) are located on both sides of the secondary positioning mechanism (202) and on the moving seat II (214) of the transverse linear module I (212) at the top of the frame (9); The left peeling gripper (210) and the right peeling gripper (211) are respectively mounted on the rotating seat of the rotary cylinder (215). The rotary cylinder (215) is fixed on the moving seat II (214) of the transverse linear module. The release paper is completely peeled off by rotating the left peeling gripper (210) and the right peeling gripper (211) in conjunction with the descent of the upper and lower cylinders (213).

5. The high-speed flexible sheet bonding equipment for 3C lithium batteries according to claim 1, characterized in that: The attachment module (3) includes a left four-axis robot (301), a right four-axis robot (302), a variable distance vision module (303), and an antistatic bar (304) mounted on the frame (9). The two left four-axis robots (301) and right four-axis robots (302) take turns performing attachment operations. After picking up the material, they move to the variable distance vision module (303) to take pictures and position it. After taking pictures, the antistatic bar (304) blows ion air to eliminate static electricity before the attachment operation is performed.

6. The high-speed flexible sheet bonding equipment for 3C lithium batteries according to claim 5, characterized in that: The variable distance vision module (303) uses two 2D cameras (305) and a positive and negative threaded rod linear module (306) on the top of the frame (9) to form a variable distance imaging structure. The two 2D cameras (305) are mounted on two moving seats III (307) on the positive and negative threaded rod linear module (306) that are relatively close or far apart.

7. The high-speed flexible sheet bonding equipment for 3C lithium batteries according to claim 1, characterized in that: The transfer module (4) includes a linear module V (401) and a carrier (402) mounted on a moving seat of the linear module V (401). After the upstream handling mechanism puts 2 PCS battery products into the carrier (402), the linear module V (401) drives the carrier (402) to move sequentially to the loading position, the attachment position of the left four-axis robot (301), the attachment position of the right four-axis robot (302), the rolling station, and the unloading position. The frame (9) is also equipped with an upper CCD module (10). When the product is changed, the upper CCD module (10) takes pictures of the carrier (402) and positions it, and uploads the coordinate data of the new carrier (402) to the robot. It is in a silent state during normal production.

8. The high-speed flexible sheet bonding equipment for 3C lithium batteries according to claim 1, characterized in that: The rolling module (6) includes two pressure roller cylinders (601) located above the linear module V (401) and pressure rollers A (602) and B (603) respectively installed at the piston rod ends of the two pressure roller cylinders (601).

9. The high-speed flexible sheet bonding equipment for 3C lithium batteries according to claim 1, characterized in that: The unloading module (5) includes a four-axis unloading robot (501) mounted on the frame (9). When the carrier (402) moves to the unloading position, the four-axis unloading robot (501) grabs the attached battery product and unloads it. Then the carrier (402) is driven by the linear module V (401) to reset to the loading position to wait for the next round of operation.

10. A high-speed flexible sheet bonding device for 3C lithium batteries according to claim 1, characterized in that: The waste handling module (7) includes a waste bin (701) and an ejection cylinder (702) mounted on the frame (9). The waste bin (701) is mounted on the movable slide (703) of the ejection cylinder (702).

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