Automatic Rotary Vacuum Final Sealing Machine for Lithium Pouch Cell

I. Equipment Description

This equipment is suitable for the vacuum sealing process of lithium-ion pouch cells.  

It adopts a rotary dual-fixture alternating structure. The two fixtures take and place cells in turn, alternately entering the vacuum sealing chamber, so that the clamping time does not affect the equipment efficiency.  

After placing the battery into the fixture on the rotary table, press the start button. The turntable rotates 180°, and the battery enters the vacuum sealing area. The vacuum chamber closes, and the vacuum pump starts to work.  

When the vacuum inside the chamber reaches a preset low level, the piercing needle is activated to break the gas bag, preventing the interior of the battery from coming into contact with air.  

When the chamber reaches the ultimate vacuum, the upper sealing bar performs the sealing process.  

Press the start button again, the turntable rotates 180°, the sealed cell exits the vacuum area, and the unsealed cell enters the sealing area — the cyclic operation continues.

II. Process Flow

III. Applicable Cell Specifications

IV. Equipment Parameter Description

V. Main Features

l Dual-station rotary structure, positioning accuracy: ±0.05 mm

l Sealing head working temperature range: ambient to 250°C

l Temperature control accuracy: ±3°C

l Sealing time: 1–99 seconds, adjustable

l Vacuum pressing mechanism uses spring and cylinder, ensuring flatness even during frequent cell model changes

l Electrolyte recovery tray on rotary table, easy to clean

l Vacuum pipeline equipped with electrolyte filter, effectively prevents corrosion of vacuum system

l Upper sealing bar adopts double-linkage pneumatic structure, ensures parallel movement

l Piercing needle is positioned within 10 mm from sealing bar, suitable for various battery sizes

l Time accuracy: ±0.1 second

l Upper and lower copper sealing heads, width: 5 mm

l Max sealable cell size: 350 (L) × 120 (W) × 10 (T) mm

l Auto alignment function for sealing heads; edge distance from pouch edge ≤ 0.5 mm

l Vacuum degree ≥ -95 KPa

l Touchscreen error display function included

l Manual mode available for adjustment convenience

l Aluminum alloy frame, coated with grey-white spray paint; machined parts undergo anti-rust treatment

VI. Reference Images

VII. Main Configuration

VIII. Spare Parts and Consumables

IX. Power and Installation Parameters