Multi-station linkage high-precision polymer battery automatic pad printing device

Abstract

This invention belongs to the field of lithium-ion battery technology, specifically relating to a high-precision automated pad printing device for polymer batteries with multi-station linkage. The device includes: a lower frame, an upper frame, a feeding hopper, a lifting device, a tray buffer conveyor belt, a robot handling mechanism, an unloading hopper, a feeding vision system, a battery transport turntable mechanism, a pad printing machine, a hot air blowing mechanism, a tray buffer mechanism, and a tray handling mechanism. This invention achieves full automation of the polymer battery process, from automatic feeding and high-precision pad printing to rapid drying and unloading, by integrating a multi-station linkage turntable, precise visual positioning, adjustable XYZ-axis handling, and multiple redundant safety protections.

Description

Technical Field

[0001] This invention belongs to the field of lithium-ion battery technology, specifically relating to a high-precision automatic pad printing device for polymer batteries with multi-station linkage. Background Technology

[0002] Lithium-ion batteries, with their high energy density, long cycle life, and stable discharge performance, have been widely used in consumer electronics, new energy vehicles, and energy storage systems. In the battery production process, the pad printing process is used to print identification information on the surface of the casing, which is crucial for product traceability and compliance. Currently, the industry generally relies on manual operation for battery loading, positioning, and pad printing, which suffers from low production efficiency, easy damage to the battery appearance due to human contact, poor positioning consistency, and operational safety risks. This has become a key bottleneck restricting the automation and quality improvement of battery production lines.

[0003] Although some automated pad printing equipment has been put into use, it often faces problems such as cumbersome changeover adjustments, insufficient positioning accuracy, lack of anti-damage mechanisms for pouch batteries, and reduced overall efficiency due to downtime during refueling in continuous operation when dealing with flexible production of multi-specification polymer batteries. Therefore, there is an urgent need for an automated pad printing device with high-precision positioning, adaptive rapid changeover, multiple safety protections, and the ability to achieve continuous operation at multiple stations, in order to improve the automation level, product yield, and operational safety of battery production. Summary of the Invention

[0004] The purpose of this invention is to provide a high-precision automatic pad printing device for polymer batteries with multi-station linkage, thereby solving the technical problems existing in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-precision polymer battery automatic pad printing device with multi-station linkage, comprising: a lower frame, an upper frame, a feeding hopper, a lifting device, a pallet buffer conveyor belt, a robot handling mechanism, a feeding hopper, a feeding vision system, a battery transport turntable mechanism, a pad printing machine, a hot air blowing mechanism, a pallet buffer mechanism, and a pallet handling mechanism. The upper frame is mounted on top of the lower frame, and the robot handling mechanism, the loading vision system, the battery transport turntable mechanism, and the hot air blowing mechanism are all mounted on the equipment base plate above the lower frame. The feeding hopper, lifting device, pallet buffer conveyor belt, unloading hopper, pallet buffer mechanism, and pallet handling mechanism are all mounted on the hopper mounting plate in the middle of the lower frame; The pad printing machine is positioned on one side of the lower frame and corresponds to the pad printing station of the battery transport turntable mechanism.

[0006] Preferably, the upper frame is constructed of an aluminum profile frame structure, with a double door on the front, a double door for the electrical system on the side, and a frame cover plate on the top; a fan is installed on the side of the frame for cooling; a touch screen, buttons, rotary switches, emergency stop switches, and tri-color lights are installed on the front of the frame; a display screen, keyboard, and mouse are installed on the frame for debugging; the outer frame of the pad printing machine is fixed inside the aluminum profile frame structure to accommodate the pad printing machine.

[0007] Preferably, the feeding hopper includes a base plate, on which two linear guide rails are arranged in parallel. A slider connecting block is installed on the slider of the linear guide rail. Two guide plates are respectively connected to two nuts with opposite directions of rotation on a positive and negative threaded screw through trapezoidal nut connecting blocks. The positive and negative threaded screw is supported on the base plate by bearing seats. A hand crank is connected to one end of the positive and negative threaded screw through a shaft and synchronous pulley A, synchronous belt, and synchronous pulley B. An upright plate is fixed to the end of the base plate and together with the two guide plates, forms a three-way positioning system for the pallet. A through-beam sensor is installed on a sensor bracket to detect whether the pallet is against the upright plate. Two sets of through-beam sensors are arranged opposite each other on both sides of the hopper to detect the pallet's lifting limit position.

[0008] Preferably, the lifting device includes a base plate, and a track-embedded linear module is fixed to the base plate by a module mounting plate; a module connecting plate is connected to the slider of the linear module and extends upward to install multiple pallet lifting plates; a miniature reflective fiber optic sensor is installed on the side wall of the silo, and its detection optical path points to the area where the pallet is located, for interlocking control of the lifting action of the linear module.

[0009] Preferably, the robot handling mechanism includes a four-axis robot mounted on a base, with its end connected to a guide rail mounting plate via a flange guide shaft support and a connecting plate; a linear guide rail is vertically mounted on the guide rail mounting plate, and a sliding plate is connected to the slider of the linear guide rail; a suction cup base connecting plate is elastically connected to the lower part of the sliding plate via a spring guide post and a spring; a sensing plate is fixed to the suction cup base connecting plate, and a miniature photoelectric sensor is mounted on the guide rail mounting plate at the corresponding position; a suction cup base is mounted below the suction cup base connecting plate, and a vacuum suction cup and a backlight plate are mounted on its bottom surface.

[0010] Preferably, the unloading hopper is equipped with a Y-axis shaping device on the basis of the loading hopper structure; the device includes a linear guide rail that is supported by a column and a mounting plate; a track locking block is slidably fitted on the linear guide rail and can be locked by a handle; a sliding plate is connected to the track locking block and the slider of the linear guide rail; a thin cylinder with a guide rod is mounted on the sliding plate, and a push block is connected to the end of its piston rod for pushing the tray for positioning in the Y direction.

[0011] Preferably, the battery transport turntable mechanism includes a base fixed to the equipment base plate, a flange-type divider mounted on the base, a turntable fixed to the output end of the divider, multiple sets of battery carrying tooling components evenly distributed and fixed on the turntable in the circumferential direction, an air slip ring mounted above the center of the turntable via an air slip ring fixing plate, its rotor connected to the air slip ring extension shaft via an air slip ring connecting block and a cross ring coupling, the extension shaft being fixed to the upper frame via a guide shaft support, a proximity sensor and a sensor sensing block mounted near the divider, and the sensor and its bracket positioned below the turntable, together used to detect the indexing position of the turntable.

[0012] Preferably, the hot air blowing mechanism includes a connecting plate fixed to the upper frame by a mounting plate, a hot air gun mounted on the connecting plate and covered with a protective cover; the Kelser fan is placed inside the lower frame and connected to the air inlet of the hot air gun through a high-temperature resistant air duct.

[0013] Preferably, the pallet handling mechanism includes a module mounting plate mounted on the equipment base plate via a guide shaft support and a guide shaft; a linear module and a linear guide rail are mounted parallel to each other on the module mounting plate; a movable plate is connected to both the slider of the linear module and the slider of the linear guide rail; a vertical plate is mounted vertically on the movable plate; a suction cup structure base plate is mounted horizontally on the top of the vertical plate; a thin cylinder with a guide rod is mounted below the suction cup structure base plate via a cylinder mounting plate, an adjusting bolt fixing plate, and a height adjusting plate; an X-axis adjusting plate is mounted at the end of the piston rod of the cylinder; a Y-axis adjusting plate is slidably mounted on the X-axis adjusting plate; and a buffered vacuum suction cup is mounted on the Y-axis adjusting plate.

[0014] The beneficial effects of this invention are: This invention achieves full automation of the polymer battery process, from automatic feeding and high-precision pad printing to rapid drying and unloading, by integrating a multi-station linkage turntable, visual precision positioning, XYZ three-axis adjustable handling, and multiple redundant safety protections. Production efficiency is greatly improved, with continuous operation of four stations avoiding equipment idle time and material waiting, increasing capacity by more than 60% compared to single-station equipment, and the automatic pallet buffer replenishment mechanism eliminates downtime. Product quality and safety are fundamentally improved, with visual positioning and four-way shaping ensuring pad printing position accuracy, and dedicated spring pressure feedback and dual-sensor interlocking protection completely eliminating the risk of battery crushing and bursting, bringing the production defect rate close to zero.

[0015] Furthermore, this device boasts exceptional production flexibility and ease of operation. Through an external handwheel, sliding guide rails, and modular pneumatic circuit design, it enables rapid changeover of trays and batteries of different specifications, reducing changeover time from 30 minutes to 5 minutes, significantly enhancing the equipment's versatility. The overall layout is rational, and the adjustment mechanism is user-friendly, ensuring high precision and stability while reducing operational difficulty and maintenance costs, perfectly meeting the stringent requirements of modern lithium battery production lines for high efficiency, high yield, and high safety. Attached Figure Description

[0016] Figure 1 This is an isometric schematic diagram of the overall structure of the high-precision polymer battery automatic pad printing device with multi-station linkage according to the present invention. Figure 2 This is a front view schematic diagram of the overall structure of the present invention; Figure 3 for Figure 1 Axonometric view of the lower frame 100; Figure 4 for Figure 1 Axonometric view of the upper middle frame 200 after removing part of the panel; Figure 5 This is a front view of the upper frame 200; Figure 6 This is an isometric schematic diagram of the 300mm feeding hopper; Figure 7 A canometric view of the material loading hopper 300 after removing part of the guide plate; Figure 8 This is an isometric schematic diagram of the lifting device 400; Figure 9 A cantilevered schematic diagram of the pallet buffer conveyor belt 500; Figure 10 A schematic diagram of the entire pallet buffer conveyor belt 500; Figure 11 for Figure 10 Enlarged image; Figure 12 for Figure 10 Internal structure diagram; Figure 13 This is a schematic diagram of the installation of a four-axis robot in the 600 robot handling mechanism; Figure 14 This is an installation diagram of the robot handling mechanism 600; Figure 15 This is an isometric schematic diagram of the 700mm material feeding hopper; Figure 16 Axonometric schematic diagram of the 800 loading vision system; Figure 17 A top view of the turntable 902 and the battery-supporting fixture assembly 903; Figure 18 This is an isometric schematic diagram of the speed-regulating motor 913 and its connecting components; Figure 19 This is an isometric schematic diagram of a pad printing machine 1000; Figure 20 A side view of the heat exchanger mechanism 1100; Figure 21This is an overall isometric schematic diagram of the tray buffer mechanism 1200; Figure 22 for Figure 21 A partial schematic diagram; Figure 23 This is a partial schematic diagram of another part of the tray buffer mechanism 1200; Figure 24 for Figure 21 Enlarged view of a portion of the image; Figure 25 for Figure 21 Working status diagram; Figure 26 A schematic diagram of the overall isometric view of the pallet handling mechanism 1300; Figure 27 for Figure 26 Another angle diagram; Explanation of the labels in the diagram: 100-Lower frame, 101-Square tube welded skeleton, 102-Lower door panel, 103-Equipment base plate, 104-Hopper mounting plate, 105-Universal casters, 106-Foot cups, 107-Compressed air triplet, 108-Vacuum pump; 200-Upper frame, 201-Aluminum profile frame structure, 202-Double door, 203-Electrical system double door, 204-Frame top cover, 205-Fan, 206-Touch screen, 207-Button, 208-Rotary switch, 209-Emergency stop switch, 210-Tricolor light, 211-Display screen, 212-Keyboard, 213-Mouse, 214-Pad printing machine outer frame; 300-Feeding bin, 301-Base plate, 302-Slider limit block, 303-Linear guide rail, 304-Slider connecting block, 305-Bearing seat, 306-Positive and negative threaded screw, 307-Trapezoidal nut connecting block, 308-Guide plate, 309-Upright plate, 310-Sensor bracket, 311-Through-beam sensor, 312-Through-beam sensor (pallet position detection), 313-Through-beam sensor (lifting position detection), 314-Hand crank wheel bracket, 315-Shaft locking block, 316-Shaft, 317-Synchronous belt pulley A, 318-Hand crank wheel, 319-Synchronous belt pulley B, 320-Synchronous belt, 321-Protective cover; 400-Lifting device, 401-Base plate, 402-Firming plate, 403-Module mounting plate, 404-Rail-embedded linear module, 405-Module connecting plate, 406-Pattern lifting plate, 407-Miniature reflective fiber optic sensor (pallet presence / absence detection). 500-Tray buffer conveyor belt, 501-Base, 502-Double row synchronous belt, 503-Sensor bracket, 504-Reflection sensor (with or without tray), 505-Protective cover; 600-Robot handling mechanism, 601-Base, 602-Four-axis robot, 603-Flange guide shaft support, 604-Connecting plate, 605-Guide rail mounting plate, 606-Linear guide rail, 607-Guide rail stop, 608-Sliding plate, 609-Spring guide column, 610-Spring, 611-Sensing sheet, 612-Miniature photoelectric sensor, 613-Suction cup base connecting plate, 614-Suction cup base, 615-Vacuum suction cup, 616-Backlight panel; 700-Feeding bin, 701-Column, 702-Mounting plate, 703-Guide rail stop, 704-Linear guide rail, 705-Railway locking block, 706-Sliding plate, 707-Thin cylinder with guide rod, 708-Push block; 800 - Loading vision system, 801 - Light source mounting bracket, 802 - Camera bracket connecting block, 803 - Camera mounting bracket, 804 - Camera, 805 - Light source, 806 - Glass frame, 807 - Dustproof glass; 900-Battery transport turntable mechanism, 901-Base, 902-Turntable, 903-Battery bearing tooling assembly, 904-Vacuum suction cup air pipe on / off assembly, 905-Air slip ring fixing plate, 906-Air slip ring, 907-Air slip ring connecting block, 908-Cross ring coupling, 909-Air slip ring extension shaft, 910-Guide shaft support, 911-Flange type divider, 912-Divider connecting plate, 913-Speed ​​regulating motor, 914-Divider sensor bracket, 915-Proximity sensor, 916-Sensor sensing block, 917-Sensor bracket, 918-Sensor, 919-Bracket, 920-Vacuum gauge; 1000-Pad Printing Machine; 1100-Hot air blower mechanism, 1101-Mounting plate, 1102-Connecting plate, 1103-Hot air gun, 1104-Protective cover, 1105-Kolster blower; 1200-Pallet buffer mechanism, 1201-Support shaft, 1202-Buffer hopper bottom plate, 1203-Linear guide rail, 1204-Slider connecting block, 1205-Shaping plate, 1206-Sensor bracket, 1207-Through-beam sensor, 1208-Bracket, 1209-Through-beam sensor, 1210-Stop block, 1211-Bearing seat, 1212-Positive and negative threaded screw, 1213-Screw nut connecting block, 1214-Slide rail upright plate, 1215-Pull-out linear slide rail, 1216-Slide rail mounting plate, 1217-Pallet bearing plate, 1218-Positioning block, 1219-Hand crank wheel frame, 122 0-Embedded bearing housing, 1221-Hand crank wheel shaft, 1222-Hand crank wheel shaft locking block, 1223-Hand crank wheel, 1224-Synchronous belt pulley A, 1225-Synchronous belt pulley B, 1226-Synchronous belt, 1227-Protective cover, 1228-Guide shaft support, 1229-Guide rail mounting plate, 1230-Lifting column, 1231-Pallet bracket, 1232-Limit block, 1233-Photoelectric sensor, 1234-Linear guide rail, 1235-Guide rail connecting plate, 1236-Screw, 1237-Flanged screw support, 1238-Coupling, 1239-Motor base, 1240-Speed-regulating motor; 1300-Pallet handling mechanism, 1301-Guide shaft support, 1302-Guide shaft, 1303-Flange guide shaft support, 1304-Module mounting plate, 1305-Linear module, 1306-Module positioning buckle, 1307-Slotted photoelectric sensor, 1308-Linear guide rail, 1309-Slider lifting block, 1310-Moving plate, 1311-Upright plate, 1312-Suction cup structure base plate, 1 313- Rib plate, 1314- Cylinder mounting plate, 1315- Adjusting bolt fixing plate, 1316- Adjusting bolt, 1317- Height adjustment plate, 1318- Thin cylinder with guide rod, 1319- X-axis adjustment plate, 1320- Y-axis adjustment plate, 1321- Vacuum suction cup with buffer, 1322- Tray connector, 1323- Cable chain mounting bracket, 1324- Cable chain, 1325- Pressure switch. Detailed Implementation

[0017] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings and preferred embodiments.

[0018] The overall structure of the device is based on a stable lower frame 100 (see...). Figure 1 , Figure 3 The main body of the lower frame is a square tube welded skeleton 101, which is covered by a lower door panel 102 on its outer side. (For example...) Figure 1As shown, the top plane of the lower frame 100 is mainly composed of the equipment base plate 103 and the hopper mounting plate 104. The hopper mounting plate 104 is installed on one side at a height lower than the equipment base plate 103, forming two different planes supporting the material storage / transfer module and the core operation module. The lower frame 100 is equipped with omnidirectional casters 105 and height-adjustable feet 106 at its four corners for easy movement and leveling. The frame integrates a compressed air triplet 107 to provide pneumatic power to the equipment and a vacuum pump 108 to generate vacuum suction force.

[0019] like Figure 1 and Figure 2 As shown, the pad printing machine 1000 is a core functional module with its body set independently. It is fixedly connected to the side of the lower frame 100 through its own support structure, so that the pad printing machine 1000 and the lower frame 100 can be stably placed on the workshop floor together.

[0020] Above the device substrate 103, a protective and operating space consisting of an upper frame 200 is provided (see [reference]). Figure 1 , Figure 4 The upper frame 200 is constructed from an aluminum profile frame structure 201, with its bottom edge bolted to the edge of the equipment base plate 103. The front of the frame features an operable double door 202 and an electrical system double door 203, and the top is covered by a frame cover plate 204. Inside the frame, in the electrical control cabinet area, a fan 205 is installed, with its exhaust vent directed at the electrical components for heat dissipation. The external panel of the frame integrates a touchscreen 206, buttons 207, rotary switches 208, an emergency stop switch 209, and tri-color lights 210, forming the main human-machine interface. Additionally, a display screen 211, keyboard 212, and mouse 213 for vision system debugging are also centrally located here. Figure 1 and Figure 4 As shown, in order to protect the pad printing machine 1000 from dust, a pad printing machine outer frame 214 is specially set up. The outer frame is structurally connected to the upper frame 200, and the main body of the pad printing machine 1000 is housed within the outer frame.

[0021] like Figure 1 , Figure 6 and Figure 7As shown, material supply begins with a feeding hopper 300 mounted on a hopper mounting plate 104. The base plate 301 of the feeding hopper 300 is bolted to the hopper mounting plate 104. Two linear guide rails 303 are mounted on the base plate 301, parallel to the pallet conveying direction. A slider on each linear guide rail 303 is connected to a vertically positioned guide plate 308 via a slider connecting block 304, allowing the two guide plates 308 to slide along the guide rails. Between the two linear guide rails 303, a lead screw 306 with left and right threaded sections is supported on the base plate 301 by bearing seats 305 at both ends. Two trapezoidal nuts with opposite thread directions on the lead screw 306 are fixed to two trapezoidal nut connecting blocks 307, which in turn are fixed to the guide plates 308 on the left and right sides, respectively. Behind the guide plates 308, a vertical plate 309 is fixed perpendicular to the conveying direction. Thus, the inner sides of the two movable guide plates 308 and the fixed upright plate 309 together form three positioning reference planes for the pallet in the width direction (X-direction) and length direction (Y-direction). A sensor bracket 310 is installed near the upright plate 309, on which a through-beam sensor 311 is mounted. Its beam passes through the hopper space to detect the presence of a pallet within the hopper. Another pair of through-beam sensors 312 have beams parallel to the upright plate 309 to detect whether the pallet has moved into position and whether its edges are in close contact with the upright plate 309. Two sets of through-beam sensors 313 are also installed on the frames on both sides below the hopper. Their beams pass horizontally through the lifting path to detect the pallet's lifting limit position, forming redundant protection. A handwheel bracket 314 is provided on the outside of the hopper. The handwheel 318 is fixed to a transverse shaft 316 via a shaft locking block 315. A synchronous pulley A317 is mounted on the shaft 316. A synchronous belt 320 connects the synchronous pulley A317 to the synchronous pulley B319 mounted at one end of the lead screw 306. When the hand crank 318 is turned, power drives the lead screw 306 to rotate via the synchronous belt drive. Because the threads at both ends of the screw turn in opposite directions, the two trapezoidal nuts on it drive the guide plates 308 on both sides to move synchronously in opposite directions, thereby quickly adapting to pallets of different widths. A protective cover 321 is provided on the upper part of the lead screw 306 to prevent dust.

[0022] like Figure 6 , Figure 8 and Figure 9As shown, a lifting device 400 is installed directly below the feeding hopper 300. The base plate 401 of the lifting device 400 is fixedly connected to the base plate 301 of the feeding hopper 300 or the hopper mounting plate 104 by bolts. Rib plates 402 are welded onto the base plate 401 to enhance rigidity, and a module mounting plate 403 is fixed to the rib plate 402. A track-embedded linear module 404 is vertically mounted on the module mounting plate 403, and its sliding block is connected to three parallel pallet lifting plates 406 via a module connecting plate 405, thereby driving the lifting plates 406 to perform vertical lifting movements. A miniature reflective fiber optic sensor 407 is also installed on the module mounting plate 403, with its transmitting and receiving ends facing upwards, to detect whether a pallet is present on the pallet lifting plate 406. There is a safety interlock control between the lifting device 400 and the loading hopper 300: when the through-beam sensor 311 in the loading hopper 300 detects a pallet, the control system will output a signal to prevent the linear module 404 of the lifting device 400 from operating. The width and spacing of the pallet lifting plates 406 are designed so that they can completely descend below the conveying surface formed by the double-row synchronous belts 502 of the pallet buffer conveyor belt 500 during descent, achieving perfect structural avoidance.

[0023] like Figure 8 and Figure 9 As shown, the base 501 of the pallet buffer conveyor belt 500 is bolted to the hopper mounting plate 104, and its conveying end is precisely aligned with the inlet of the loading hopper 300. The conveyor belt uses a double-row synchronous belt 502 to transport the pallets. A sensor bracket 503 is provided above the conveyor belt, on which a reflection sensor 504 is installed to detect whether there is a pallet on the conveyor belt. The entire conveyor belt mechanism is covered by a protective cover 505. Its working logic is implemented by the control system: when the miniature reflection fiber optic sensor 407 in the loading hopper 300 detects no pallet, and the reflection sensor 504 on the buffer conveyor belt 500 detects a pallet, the conveyor belt motor starts, automatically feeding the pallet into the hopper.

[0024] like Figures 13 to 14As shown, the base 601 of the robot handling mechanism 600 is bolted to the equipment base plate 103, located between the feeding bin area and the battery transport turntable area. A four-axis robot 602 is mounted on the base 601. A vertical guide rail mounting plate 605 is mounted on the end flange of the robot 602 via a flange guide shaft support 603 and a connecting plate 604. Two linear guide rails 606 and their end guide rail stops 607 are mounted parallel to each other on the guide rail mounting plate 605. A sliding plate 608 is fixed to the slider of the linear guide rail 606 via a connecting block on its back, thus allowing it to slide vertically relative to the guide rail mounting plate 605. Several vertically downward spring guide posts 609 are fixed on the sliding plate 608, each guide post 609 fitted with a spring 610. Simultaneously, a sensing plate 611 is also fixed to the sliding plate 608. A miniature photoelectric sensor 612 is fixed on the guide rail mounting plate 605, with the opening direction of its U-shaped sensing groove aligned with the movement path of the sensing element 611. A suction cup base 614 is connected to the lower part of the sliding plate 608 via a suction cup base connecting plate 613. A vacuum suction cup 615 for picking up the battery is mounted below the suction cup base 614, and a backlight plate 616 providing uniform backlight illumination for the vision system is mounted on its side. When the vacuum suction cup 615 contacts the battery and is subjected to an abnormal upward force, it pushes the entire suction cup base assembly upward, compressing the spring 610 and causing the sensing element 611 to move upward into the U-shaped sensing groove of the miniature photoelectric sensor 612. The sensor is triggered and immediately sends an alarm signal to the control system, and the robot immediately stops its downward pressing action, thus effectively preventing damage to the pouch battery.

[0025] like Figure 13 As shown, after the robot 600 picks up the battery, it moves it to a fixed imaging station above the loading vision system 800. The loading vision system 800 includes a light source mounting bracket 801, which is fixed to the equipment base plate 103 or the upper frame 200. A camera mount connecting block 802, a ring-shaped light source 805, and a square glass frame 806 are mounted on the light source mounting bracket 801. The camera mount bracket 803 is bolted to the bottom of the camera mount connecting block 802, and a camera 804 is mounted at its lower end. A high-transmittance dustproof glass 807 is embedded in the glass frame 806 to protect the internal optical components from contamination. During operation, the robot moves the battery between the backlight plate 616 and the camera 804. The light source 805 provides illumination from the upper side, and the camera 804 captures a contour image of the battery vertically downwards for precise positioning.

[0026] like Figures 14 to 18As shown, after completing visual positioning, the robot precisely places the battery into the loading station of the battery transport turntable mechanism 900. The base 901 of this mechanism is fixed to the equipment base plate 103 by bolts. A high-precision flange-type divider 911 is mounted on the base 901 via its flange. The output flange of the divider 911 is rigidly connected to the circular turntable 902 via the divider connecting plate 912. A speed-regulating motor 913 is mounted on the divider connecting plate 912 via a motor mount, and its output shaft is connected to the input shaft of the flange-type divider 911 via a coupling, thereby driving the turntable 902 to perform precise intermittent indexing movements. A divider sensor bracket 914 is fixed next to the housing of the divider 911, on which a proximity sensor 915 is mounted to detect the position of the sensor sensing block 916 fixed on the rotating shaft of the divider 911. Another sensor bracket 917 is fixed to the base 901, on which a sensor 918 is mounted to detect the evenly distributed protrusions on the bottom circumference of the turntable 902. The signals from these two sensors work together to ensure that the turntable 902 rotates precisely 90° each time and stops stably at one of the four predetermined positions. Multiple battery-carrying fixtures 903, vacuum suction cup air pipe disconnection components 904 for manual control of airflow, and air slip ring mounting plates 905 for mounting air slip rings are evenly distributed along the circumference of the turntable 902. An air slip ring 906 is mounted on the air slip ring mounting plate 905 via its housing, and its rotating end is connected to a vertical air slip ring extension shaft 909 via an air slip ring connecting block 907 and a cross-ring coupling 908. The upper end of the air slip ring extension shaft 909 is supported by a guide shaft support 910 fixed to the upper frame beam. A vacuum gauge 920 is also mounted on the air slip ring extension shaft 909 via a bracket 919 for real-time monitoring of the vacuum pressure in the adsorption airflow. Each battery-carrying fixture assembly 903 is typically divided into three independent vacuum channels, which are connected to the corresponding interfaces of the vacuum suction cup air pipe assembly 904 via flexible air tubes, and finally converge to the rotating end of the air slip ring 906, thereby achieving uninterrupted vacuum adsorption force on the battery when the turntable rotates 360°.

[0027] like Figure 19 and Figure 20 As shown, when the fixture carrying the battery rotates with the turntable 902 to the pad printing station, the pad printing machine 1000 performs the printing operation. After printing, the turntable 902 is guided to the air blowing station. A hot air blowing mechanism 1100 is provided here, with its mounting plate 1101 fixed to the side wall or crossbeam of the upper frame 200, and a hot air gun 1103 mounted via an L-shaped connecting plate 1102. The outlet of the hot air gun 1103 faces the surface of the battery on the turntable and is equipped with a protective cover 1104. The hot air required for blowing is generated by a Kirkland fan 1105 placed inside the lower frame 100 and delivered to the hot air gun 1103 through a high-temperature resistant hose for quickly drying the pad printing ink on the battery surface.

[0028] like Figure 15 As shown, finally, the battery rotates with the turntable 902 to the unloading station, where it is picked up and transported by the robot 600 to the unloading bin 700. The unloading bin 700 integrates a Y-axis shaping device on top of the basic structure of the loading bin 300. Two columns 701 are vertically fixed to the base plate 301, their tops jointly supporting a mounting plate 702. Two linear guide rails 704 and their end guide rail stops 703 are installed parallel to each other on the lower surface of the mounting plate 702. A track locking block 705 can be quickly locked or released on the linear guide rail 704 via its eccentric handle mechanism. The upper surface of the sliding plate 706 is connected to the track locking block 705 and the slider of the linear guide rail 704, allowing it to slide along the guide rails. A thin-type cylinder 707 with a guide rod is mounted on the lower surface of the sliding plate 706, and a push block 708 is connected to the front end of the cylinder's piston rod. By loosening the locking lever of the track locking block 705, the initial position of the sliding assembly on the guide rail can be manually adjusted to accommodate pallets of different widths. During operation, the thin cylinder 707 with guide rod drives the push block 708 forward, which cooperates with the inner sides of the pre-adjusted guide plates 308 on both sides and the upright plate 309 at the rear end to position and shape the pallet from four directions.

[0029] like Figures 21 to 25As shown, empty pallets after use can be stored in the pallet buffer mechanism 1200. This mechanism is fixed to the lower frame 100 or the ground by several support shafts 1201, with the top of the support shafts 1201 connected to the bottom plate 1202 of the buffer hopper. Two linear guide rails 1203 are horizontally mounted on the bottom plate 1202, and their sliders are connected to the shaping plate 1205 through slider connecting blocks 1204. A sensor bracket 1206 is fixed on the shaping plate 1205, and a through-beam sensor 1207 is mounted on it to detect whether the pallet is in position in the Y-axis direction. The shaping plate 1205 also has a bracket 1208, which is equipped with a through-beam sensor 1209, whose beam passes horizontally through the buffer hopper space to detect the lifting height of the pallet. The two sets are redundant. A stop block 1210 is installed at the end of the guide rail for mechanical limiting. A bearing seat 1211 supports a positive and negative thread screw 1212, and a screw nut connecting block 1213 on the screw is connected to the shaping plate 1205. A hand-cranked transmission mechanism, similar to that used for the loading hopper, drives the two shaping plates 1205 to move synchronously to accommodate different pallet widths. Specifically, rotating the hand-cranked wheel 1223 transmits the rotational motion to the positive and negative threaded screws 1212 via the coaxial hand-cranked wheel shaft 1221, synchronous pulley A1224, synchronous belt 1226, and synchronous pulley B1225, driving the two shaping plates 1205 to move towards or away from each other. The slide rail upright plate 1214 is vertically fixed to the base plate 1202, and a three-section pull-out linear slide rail 1215 is mounted on it. The slide rail mounting plate 1216 of the slide rail 1215 is fixed with a pallet bearing plate 1217 and a positioning block 1218. The entire slide rail assembly can be pulled out like a drawer for easy and quick loading and unloading of a stack of empty pallets. The lifting section of the buffer mechanism is located below the hopper body. The speed-regulating motor 1240 drives the lead screw 1236 to rotate through the coupling 1238, thereby driving the pallet bracket 1231 connected to the lead screw nut to rise and fall vertically along the linear guide rail 1234, realizing the automatic storage and retrieval of pallet stacks.

[0030] like Figure 26 and Figure 27As shown, the intra-plant circulation of empty pallets is accomplished by a pallet handling mechanism 1300. Two guide shaft supports 1301 of this mechanism are bolted to the equipment base plate 103, each with a guide shaft 1302 mounted on it. A flange guide shaft support 1303 is connected to both guide shafts 1302 simultaneously, and its upper surface is bolted to a rectangular module mounting plate 1304. A linear module 1305 is locked to the upper surface of the module mounting plate 1304 via a module positioning buckle 1306. Two linear guide rails 1308 are mounted parallel to each other on both sides of the linear module 1305. Slider shims 1309 are mounted on the sliders of the linear guide rails 1308, and these shims are connected to the sliding blocks of the linear module 1305 via screws, driving the movement of a large movable plate 1310. A vertical plate 1311 is fixed to the movable plate 1310. A suction cup structure base plate 1312 is mounted on the vertical plate 1311 and reinforced by a rib plate 1313. An L-shaped cylinder mounting plate 1314 is connected to and fixed to the suction cup structure base plate 1312 via an adjusting bolt fixing plate 1315. Several adjusting bolts 1316 are screwed vertically into the threaded holes of the adjusting bolt fixing plate 1315, with their lower ends pressing against a height adjusting plate 1317. A thin cylinder 1318 with a guide rod is mounted on the height adjusting plate 1317 via its cylinder flange, and its piston rod is vertically connected to an X-axis adjusting plate 1319. A Y-axis adjusting plate 1320 is mounted on the X-axis adjusting plate 1319 via a sliding groove and locking screws, allowing for forward and backward adjustment. Multiple buffered vacuum suction cups 1321 are threaded onto the leading edge of the Y-axis adjusting plate 1320. The initial height of the entire suction cup assembly in the Z-axis can be precisely adjusted by rotating the adjusting bolt 1316; by loosening the locking screw, the X-axis adjusting plate 1319 and the Y-axis adjusting plate 1320 can be manually slid and adjusted, so that the layout of all suction cups 1321 can be precisely matched with trays of different sizes. A tray connector 1322 is provided on the side of the movable plate 1310, and a cable chain 1324 is laid between it and the cable chain mounting bracket 1323 fixed to the end of the module mounting plate 1304 for protecting and storing vacuum tubes and wires.

[0031] The device of this invention achieves high-precision, high-efficiency, and high-safety automated production of polymer batteries through the precise layout and connection of all the above-mentioned components in three-dimensional space, and under the unified scheduling of the central control system. This is achieved through the precise arrangement and connection of all the above-mentioned components in three-dimensional space, and under the unified scheduling of the central control system.

[0032] For those skilled in the art, various improvements and modifications can be made without departing from the principles of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention.

Claims

1. A high-precision automatic pad printing device for polymer batteries with multi-station linkage, characterized in that, include: The components include a lower frame (100), an upper frame (200), a feeding hopper (300), a lifting device (400), a pallet buffer conveyor belt (500), a robot handling mechanism (600), a feeding hopper (700), a feeding vision system (800), a battery transport turntable mechanism (900), a pad printing machine (1000), a hot air blowing mechanism (1100), a pallet buffer mechanism (1200), and a pallet handling mechanism (1300). The upper frame (200) is installed on top of the lower frame (100), and the robot handling mechanism (600), the loading vision system (800), the battery transport turntable mechanism (900) and the hot air blowing mechanism (1100) are all installed on the equipment base plate (103) above the lower frame (100). The feeding hopper (300), lifting device (400), pallet buffer conveyor belt (500), unloading hopper (700), pallet buffer mechanism (1200) and pallet handling mechanism (1300) are all installed on the hopper mounting plate (104) in the middle of the lower frame (100); The pad printing machine (1000) is positioned on one side of the lower frame (100) and corresponds to the pad printing station of the battery transport turntable mechanism (900).

2. The apparatus according to claim 1, characterized in that, The upper frame (200) is composed of an aluminum profile frame mechanism (201), with a double door (202) on the front, a double door (203) for the electrical system on the side, and a frame cover plate (204) on the top; a fan (205) is installed on the side of the frame for cooling; a touch screen (206), buttons (207), rotary switches (208), an emergency stop switch (209), and a tri-color light (210) are installed on the front of the frame; a display screen (211), a keyboard (212), and a mouse (213) are installed on the frame for debugging; the outer frame (214) of the pad printing machine is fixed inside the aluminum profile frame mechanism (201) to accommodate the pad printing machine (1000).

3. The apparatus according to claim 1, characterized in that, The feeding hopper (300) includes a base plate (301), on which two linear guide rails (303) are arranged in parallel. A slider connecting block (304) is installed on the slider of the linear guide rail (303). Two guide plates (308) are respectively connected to two nuts with opposite directions of rotation on a positive and negative threaded screw (306) through trapezoidal nut connecting blocks (307). The positive and negative threaded screw (306) is supported on the base plate (301) through a bearing seat (305). A hand crank (318) is connected to the shaft (316). The synchronous pulley A (317), synchronous belt (320), and synchronous pulley B (319) are connected to one end of the positive and negative threaded screw (306) for transmission; the upright plate (309) is fixed to the end of the base plate (301) and together with the two guide plates (308) form a three-way positioning of the pallet; the through-beam sensor (312) is installed on the sensor bracket (310) to detect whether the pallet is against the upright plate (309); two sets of through-beam sensors (313) are arranged opposite to each other on both sides of the hopper to detect the lifting limit position of the pallet.

4. The apparatus according to claim 1, characterized in that, The lifting device (400) includes a base plate (401), and a track-embedded linear module (404) is fixed to the base plate (401) via a module mounting plate (403); a module connecting plate (405) is connected to the slider of the linear module (404) and extends upward to install multiple pallet lifting plates (406); a miniature reflective fiber optic sensor (407) is installed on the side wall of the silo, and its detection optical path points to the area where the pallet is located, for interlocking control of the lifting action of the linear module (404).

5. The apparatus according to claim 1, characterized in that, The robot handling mechanism (600) includes a four-axis robot (602) mounted on a base (601), whose end is connected to a guide rail mounting plate (605) via a flange guide shaft support (603) and a connecting plate (604); a linear guide rail (606) is vertically mounted on the guide rail mounting plate (605), and a sliding plate (608) is connected to the slider of the linear guide rail (606); a suction cup base connecting plate (613) is elastically connected to the lower part of the sliding plate (608) via a spring guide post (609) and a spring (610); a sensing plate (611) is fixed on the suction cup base connecting plate (613), and a miniature photoelectric sensor (612) is mounted on the guide rail mounting plate (605) at the corresponding position; a suction cup base (614) is mounted below the suction cup base connecting plate (613), and a vacuum suction cup (615) and a backlight plate (616) are mounted on its bottom surface.

6. The apparatus according to claim 1, characterized in that, The unloading hopper (700) is equipped with a Y-axis shaping device on the basis of the loading hopper structure. The device includes a linear guide rail (704) supported by a column (701) and a mounting plate (702). A track locking block (705) is slidably fitted on the linear guide rail (704) and can be locked by a handle. A sliding plate (706) is connected to the track locking block (705) and the slider of the linear guide rail (704). A thin cylinder (707) with a guide rod is installed on the sliding plate (706), and a push block (708) is connected to the end of its piston rod for pushing the tray for positioning in the Y direction.

7. The apparatus according to claim 1, characterized in that, The battery transport turntable mechanism (900) includes a base (901) fixed on the equipment base plate (103), a flange-type divider (911) mounted on the base (901), a turntable (902) fixed to the output end of the divider, multiple sets of battery carrying fixture assemblies (903) evenly distributed and fixed on the turntable (902) in the circumferential direction, an air slip ring (906) mounted above the center of the turntable through an air slip ring fixing plate (905), its rotor being connected to the air slip ring extension shaft (909) through an air slip ring connecting block (907) and a cross ring coupling (908), the extension shaft (909) being fixed to the upper frame through a guide shaft support (910), a proximity sensor (915) and a sensor sensing block (916) mounted near the divider, and a sensor (918) and its bracket (917) positioned below the turntable (902) to detect the indexing position of the turntable.

8. The apparatus according to claim 1, characterized in that, The hot air blowing mechanism (1100) includes a connecting plate (1102) fixed to the upper frame via a mounting plate (1101), a hot air gun (1103) mounted on the connecting plate (1102), and a protective cover (1104) covering the outside; a Kolsk blower (1105) is placed inside the lower frame (100) and connected to the air inlet of the hot air gun (1103) via a high-temperature resistant air duct.

9. The apparatus according to claim 1, characterized in that, The pallet handling mechanism (1300) includes a module mounting plate (1304) mounted on the equipment base plate via a guide shaft support (1301) and a guide shaft (1302); a linear module (1305) and a linear guide rail (1308) are mounted parallel to each other on the module mounting plate (1304); a moving plate (1310) is connected to both the slider of the linear module (1305) and the slider of the linear guide rail (1308); a vertical plate (1311) is vertically mounted on the moving plate (1310); and a suction cup structure base plate (1302) is also included. 312) Horizontally installed on the top of the upright plate (1311); the thin cylinder (1318) with guide rod is installed below the suction cup structure base plate (1312) through the cylinder mounting plate (1314), the adjusting bolt fixing plate (1315) and the height adjusting plate (1317); the X-axis adjusting plate (1319) is installed at the end of the piston rod of the cylinder, the Y-axis adjusting plate (1320) is slidably installed on the X-axis adjusting plate (1319), and the buffered vacuum suction cup (1321) is installed on the Y-axis adjusting plate (1320).

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