Rotary Turntable Secondary Vacuum Sealing Machine for Polymer Lithium Battery Pouch Cells

Product Overview

This rotary turntable secondary vacuum sealing machine delivers high-efficiency degassing and final hermetic sealing for pouch-type polymer lithium-ion cells. Engineered with an automated 180-degree rotary indexing mechanism and dual-fixture alternating architecture, the system enables continuous loading and unloading outside the vacuum chamber while simultaneous evacuation, gas-bag piercing, and hot sealing occur inside. This dual-station workflow completely decouples cell handling time from the cycle process, maximizing operational throughput in battery pilot lines and production environments.

Designed specifically for advanced energy storage manufacturing, secondary battery research, and industrial cell assembly, the equipment handles pouch cells up to 350 mm in length and 140 mm in width. It incorporates precision pneumatic clamping with spring-assisted leveling to ensure uniform stack flatness during vacuum extraction. Integrated electrolyte recovery grooves and specialized vacuum-line filtration traps capture volatile solvent mists, safeguarding internal pneumatic components and vacuum pumps against corrosion and extending maintenance intervals.

Built on a rigid aluminum alloy structural framework with corrosion-resistant finishes, this system delivers dependable, repeatable sealing performance under demanding multi-shift production schedules. Featuring automated sealing head alignment, high-accuracy OMRON temperature regulation up to 250°C, and a synchronized piercing blade array, the equipment ensures exact edge margin positioning and gas-tight pouch closure with minimal material loss and high production yield.

Key Features

• Dual-Station Rotary Indexing Table: Automated 180-degree alternating rotary table with ±0.05 mm positioning accuracy allows uninterrupted simultaneous cell loading/unloading and chamber processing, maximizing machine duty cycle.
• Synchronized Pouch Piercing Mechanism: High-density puncture blade array positioned within 10 mm of the sealing strip reliably pierces pouch gas-pockets under moderate vacuum prior to final evacuation, preventing ambient air exposure.
• Precision Dual-Link Sealing Bar Actuation: Upper thermal sealing bar is driven by a balanced dual-link pneumatic cylinder mechanism that ensures absolute parallelism across the full 6 mm standard seal width.
• Spring-Loaded Pneumatic Leveling Plates: Dynamic spring and cylinder clamping plate flattens cell bodies during vacuum pull-down, maintaining pouch geometry and surface flatness across varying cell thicknesses.
• Integrated Electrolyte Management and Filtration: Features a dedicated solvent recovery trough on the turntable and inline vacuum filtration traps to capture volatile electrolyte and prevent vacuum system corrosion.
• Automated Guide Edge-Positioning: Self-centering upper and lower tooling guides deliver strict edge margin alignment with pouch packaging borders maintained to within ≤0.5 mm.
• VFD-Controlled Indexing Speed: Variable frequency drive motor coupled with a high-precision cam indexer permits smooth, vibration-free rotational acceleration and customizable indexing cycle times.
• Industrial PLC and HMI Architecture: Panasonic PLC automation paired with a Weinview color touchscreen provides intuitive parameter programming, real-time cycle diagnostics, and automated error reporting.

Applications

Technical Specifications

Why Choose This Product

• Optimized Throughput Architecture: By utilizing a dual-station rotary indexing table, this system eliminates idle loading intervals, allowing operators to position the next pouch cell while the internal chamber executes degassing, puncture, and heat sealing.
• Superior Seal Integrity and Edge Alignment: Dual-link cylinder mechanics and auto-guiding tooling guarantee uniform thermal transfer and parallel bar pressure across the entire 6 mm copper seal face, maintaining edge distances within 0.5 mm.
• Robust Electrolyte Protection: Engineered specifically for battery chemistry environments, the dedicated recovery trough and inline vapor-liquid filtration units shield sensitive vacuum valves and pumps from corrosive solvent degradation.
• Industrial-Grade Reliability: Built with premier industrial automation components—including Panasonic PLCs, OMRON temperature controllers, and AirTAC pneumatics—ensuring dependable continuous operation and precise recipe repeatability.

Contact our technical engineering team today to request a quotation or discuss customized tooling and sealing head configurations tailored to your pouch cell manufacturing specifications.

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