Process and device for setting up a knife ring of a knife-ring chipper

The device and method automate knife ring sharpening and replacement using an industrial robot, addressing inefficiencies in existing technologies by ensuring quick, precise, and adaptable knife ring maintenance.

EP4640390A1Active Publication Date: 2025-10-29DIEFFENBACHER GMBH MASCH UND ANLAGENBAU +1
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Patent Information

Application Number
EP2025193800
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2021-09-26
Filing Date
2022-09-26
Publication Date
2025-10-29
Estimated Expiration
2042-09-26

AI Technical Summary

Technical Problem

Existing knife ring shredders face long cycle times, wear and tear issues, and require specific setups for different manufacturers, leading to inefficient maintenance and production risks.

Method used

A device and method utilizing an industrial robot with a grinding and sharpening system, including a measuring station, to automate the removal, sharpening, and installation of knife packages, allowing for quick and precise replacement of knives in knife rings, independent of maintenance schedules.

Benefits of technology

Enables high-precision, automated knife replacement with reduced downtime, accommodating various knife ring designs, and maintaining production continuity during maintenance.

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Abstract

The invention relates to a device for equipping a knife ring of a knife ring shredder for shredding materials, comprising a first and third subsection (37, 39) for handling knife packages (4, 5) and / or knives (2, 3), wherein in the first subsection (37) of the device (14) an industrial robot (10) for removing knife packages (4) consisting of a clamping plate (6) and a blunt knife (2) from a knife ring (1) and for inserting other knife packages (5) with a sharp knife (2) into the knife ring (1) as well as a screwing device (12) for the knife packages (5, 6) is arranged, and wherein in a third subsection (39) of the device (14) a grinding device (34) for the blunt knives (2) and for handling the knives (2, 3) an industrial robot (30), preferably with a double gripper (7) for the simultaneous transport of two knives (2, 3) is arranged. 3), is arranged,wherein in the third sub-section (39) a measuring station (32) for measuring the blunt blades (2) is arranged within the operating range of the industrial robot (30), preferably that a camera is arranged in the measuring station (32) for the measurement. The invention further relates to a method for equipping a blade ring of a blade ring shredder for comminuting materials.
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Citation Information

Patent Citations

  • Method and device for sharpening the cutting blades of a knife ring flaker

    DE10117480A1

  • Method and apparatus for grinding the knives and wear plates of a knife ring

    DE102015003520B4

  • Messerring cutter

    DE102015005642A1

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    DE19718681A1

  • device for cleaning the knife ring of a knife ring flaker

    DE19900924A1