LiB

Calendering Machine

Product Overview

The calendering machine continuously compacts the coated electrodes using large-diameter rollers, tightly bonding the active material to the foil and compacting them to the targeted thickness and density.

Features

Automatic roll change and splicing; Automatic centering for unwinding

Closed-loop control of thickness. Thickness accuracy of calendered electrode reaches ±1μm.

The non-metallic scraper minimizes the roller surface damage.

An optimized roller disassembly design reduces replacement time to 12 hours or less.

Roller cleaned by non-woven fabric dipped in silicone oil. Cleaning speed reaches 120m/min.

Standard Configuration

Unwinding unit: Dual-shaft automatic roll change and splicing, pneumatic V-block, automatic A/B shaft centering, end material detection;

Front flattening unit: Main drive rollers, tension isolation, tension detection;

Calendering unit: Roller unit, bending cylinder correction component, hydraulic component, and roller gap control component;

Slitting unit: Correction component, slitter holder;

Rewinding unit: Differential shaft.

Optional Configuration

Servo-controlled cylinder: positioning repeatability at ±1μm. Switchable position/pressure control and real-time calendering force monitoring;

IHA tab heating;

Infrared heating;

Turret-type automatic roll change / single roll unwinding;

Calendering module: single roller hot calendering / single roller RT calendering / tandem roller

RT calendering, etc;

Tab flattening unit;

Roller surface ultrasonic cleaning;

Roller surface laser cleaning.

Technical Parameters

Product Parameter

Item
Parameter
Speed

Max 140m/min (continuous coating)

Incoming electrode width

200-1400mm

Unwinding/rewinding roll diameter

Max 1200mm

Linear pressure

Max 6.5t/cm

Roller gap adjustment accuracy

1μm

Tension control range

30-500N

Tension fluctuation

±1N

Stretching tension range

30-1200N

Tension fluctuation

±3N