Circular Doctor Blade Holder Reduces Assembly Complexity
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Solution Overview
Problem
Existing doctor blade holders in manufacturing systems, such as papermaking and textile processing, are complex and costly due to their multi-component designs, requiring substantial assembly time and increasing the risk of errors, while also being cumbersome and heavy.
Innovation Solution
A simplified doctor blade holder system with a circular cross-sectional area, integrating the doctor blade holder and doctorback into a single element, using extrusion to form a hollow core with internal features for reduced weight and complexity, and incorporating a two-tube blade loading system, vacuum debris removal, and external loading mechanisms without welding, to reduce assembly parts and facilitate easy access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a multi-component design is used for the doctor blade holder, then the strength and rigidity can be maintained, but the assembly time increases and manufacturing cost increases
Solution Approach 1:
The patent combines multiple discrete components (top plate, bottom plate, mounting assembly, adjustment mechanisms) into a single integrally formed holder body made from a hollow circular extrusion. This merging eliminates the need for assembly between multiple parts while maintaining the structural strength and rigidity through the extruded design's inherent load-bearing capabilities.
Solution Approach 2:
The hollow circular extrusion serves multiple functions simultaneously: it provides structural support, acts as the mounting surface for the doctor blade, incorporates adjustment mechanisms, and integrates debris collection features. This multi-functionality reduces the need for separate components while maintaining all necessary capabilities.
2Strength
If a multi-component design is used for the doctor blade holder, then the strength and rigidity can be maintained, but the manufacturing cost increases
Solution Approach 1:
The patent combines multiple discrete components (top plate, bottom plate, mounting assembly, adjustment mechanisms) into a single integrally formed holder body made from a hollow circular extrusion. This merging eliminates the need for assembly between multiple parts while maintaining the structural strength and rigidity through the extruded design's inherent load-bearing capabilities.
3Adaptability or versatility
If multiple repeating components are used in the holder assembly, then the holder can be customized to match paper machines, but the assembly complexity increases
Solution Approach 1:
The hollow circular extrusion incorporates locally differentiated features along its length, including integrated mounting surfaces, adjustment mechanisms, and debris collection areas. This allows customization and adaptation to different paper machine configurations while maintaining a simple single-piece construction that reduces overall assembly complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution significantly reduces manufacturing costs, assembly time, and weight while maintaining strength and rigidity, enabling efficient and safe operation in compact spaces with integrated debris collection and vacuum assistance.
Implementation Method 1
integrated debris collection and vacuum systems
Data Source
AI summary
A doctor blade holder system is disclosed that includes a doctor blade holder that includes a doctor blade receiving region for receiving a doctor blade, and an actuation system for causing the doctor blade receiving region to be selectively moved toward or away from a roll surface by rotating the doctor blade holder about a first axis, wherein the doctor blade holder system is generally circular shaped in cross-sectional area and wherein the first axis is generally centrally locate with the generally circular cross-sectional area.