Calender for producing very high line forces, and method for operating a calender

The calander system addresses the challenge of maintaining precise rolling gap height control by using adjustable rollers and an entanglement mechanism, achieving high accuracy and efficiency in electrode production even at high line forces and large rail widths.

WO2025078037A1 Publication Date: 2025-04-17ANDRITZ KUESTERS GMBH & CO KG
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Patent Information

Application Number
PCT/EP2024/053885
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-10-10
Filing Date
2024-02-15
Publication Date
2025-04-17

AI Technical Summary

Technical Problem

Existing calanders face challenges in maintaining precise control over the rolling gap height, especially at high line forces and large rail widths, due to roller deformation, temperature inhomogeneities, and shear stresses, which affect the accuracy and efficiency of electrode production.

Method used

The calander system incorporates a first and second roller with adjustable axial directions and an entanglement mechanism that allows for precise adjustment of the rolling gap height across the width of the rolling gap, using profiles with specific shapes and polynomial courses to compensate for deflections and temperature-related deformations.

Benefits of technology

This solution enables highly accurate and uniform adjustment of the rolling gap height, even at high line forces and large rail widths, thereby improving the precision and efficiency of the calandering process, particularly in the production of electrodes.

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Abstract

The invention relates to a calender (100) for calendering flat structures (10), preferably in order to produce electrodes, having a first roller (1) and a second roller (2). The rollers (1, 2) can be moved relative to each other along a first axial direction (A1) of the first roller (1) and / or a second axial direction (A2) of the second roller (2). The first roller (1) has a first profile (P1), and the second roller (2) has a second profile (P2). The calender (100) has a tilting means (7) for tilting the first roller (1) and the second roller (2) about a tilt axis (V), said tilt axis (V) being perpendicular to the first axial direction (A1) and the second axial direction (A2). The invention additionally relates to a method for operating a calender (100).
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