Segmented Brush Roll Shells for Corrugated Board Cutting
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Solution Overview
Problem
The existing cutting arrangements for corrugated board webs require frequent replacement of brush rolls due to bristle wear, which is time-consuming and costly.
Innovation Solution
A cutting arrangement featuring a cylindrical roll core enveloped by segment-shaped shells with bristles, where the shells are non-rotarily joined to the core, allowing for easy replacement and maintenance without removing the entire roll from its bearings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the brush roll is constructed as a single integrated unit, then the structure is simple, but the entire roll must be replaced when bristles wear, increasing downtime and cost
Solution Approach 1:
The brush roll is divided into a roll core and multiple replaceable shell segments. Each shell contains bristles and can be independently removed and replaced without affecting the roll core or other shells. This segmentation allows partial replacement of worn bristles while maintaining the overall roll structure, significantly reducing replacement time and cost.
2Ease of repair
If the brush roll is divided into replaceable shells, then replacement is easier and faster, but the device structure becomes more complex
Solution Approach 1:
The brush roll is divided into a roll core and multiple replaceable shell segments. Each shell contains bristles and can be independently removed and replaced without affecting the roll core or other shells. This segmentation allows partial replacement of worn bristles while maintaining the overall roll structure, significantly reducing replacement time and cost.
Solution Approach 2:
The shells are designed to envelop the roll core, with each shell nested around the central core structure. This nested arrangement allows the shells to be easily attached to and removed from the roll core, providing a simple assembly-disassembly mechanism that balances ease of replacement with structural integrity.
3Reliability
If the entire brush roll is replaced due to bristle wear, then cutting performance is maintained, but costs and downtime increase
Solution Approach 1:
The brush roll is divided into a roll core and multiple replaceable shell segments. Each shell contains bristles and can be independently removed and replaced without affecting the roll core or other shells. This segmentation allows partial replacement of worn bristles while maintaining the overall roll structure, significantly reducing replacement time and cost.
Solution Approach 2:
The design allows selective replacement of only the worn shell segments while retaining the functional roll core and non-worn shells. This selective replacement approach recovers and reuses the durable components, reducing material waste and overall replacement costs while maintaining cutting performance.
Data Source
AI summary
A cutting arrangement comprises a blade shaft (32) which is mounted for drivable rotation about a blade-shaft axis of rotation (31) and which has at least one circular blade (34); and a brush roll (16) which is disposed opposite the blade shaft (32) and mounted for rotation about a brush-roll axis of rotation (15); the brush roll (16) possessing shells (37) in the cross-sectional shape of a segment of a circle which are disposed on a roll core (17) and which have an outside (39) and an inside (40) that is turned towards the roll core (17), bristles that stand out from the outside (39), torque-transmission components (44, 45, 46) for transmitting torque from the roll core (17) to the shells (37), and fastening components (49, 51) for fixing the shells (37) to the roll core (17).