Self-Supporting Paper Machine Forming Unit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional papermaking machines have complex and heavy machine frames that require extensive assembly time, space, and resources, leading to increased costs and vibration issues due to the mounting of rolls and save-all trays directly on the frame.
Innovation Solution
A self-supporting pre-assembled compact unit with an integrated save-all tray and pre-mounted rolls, piping, and walkways, which acts as a separate frame element, reducing the need for a large machine frame and minimizing vibrations by supporting the rolls independently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If rolls and save-all tray are mounted directly on the machine frame, then the structure is simple, but the frame becomes heavy and complicated requiring extensive assembly time and space
Solution Approach 1:
The machine frame is segmented into a main frame and a separate self-supporting compact unit. The rolls and save-all tray are mounted on this separate unit rather than directly on the main frame, dividing the structure into functional modules that can be assembled independently and then connected.
Solution Approach 2:
The compact unit is pre-assembled with rolls and save-all tray integrated into it before being mounted onto the main frame. This preliminary assembly reduces on-site assembly time and complexity by having components ready in a pre-configured state.
2Device complexity
If rolls and save-all tray are mounted directly on the machine frame, then the structure is simple, but the machine requires rather big internal space for access to all frame elements
Solution Approach 1:
By segmenting the frame structure into a main frame and a separate compact unit, the overall footprint is reduced. The compact unit integrates multiple functions (roll support, save-all tray) into a smaller space, eliminating the need for a large distributed frame structure.
Solution Approach 2:
Multiple functions (roll support, save-all tray mounting, piping support) are merged into a single integrated compact unit. This consolidation reduces the total space required compared to having separate structures for each function mounted on a large frame.
3Stability of the object's composition
If rolls are mounted on the same frame, then the structure is unified, but vibrations from rotating rolls are transferred through the frame interfering with machine performance
Solution Approach 1:
The rolls and save-all tray are extracted from the main frame structure and placed on a separate self-supporting compact unit. This extraction isolates the vibration-generating components from the main frame, preventing vibration transfer while maintaining structural unity through the connection between the compact unit and frame.
Solution Approach 2:
The self-supporting compact unit acts as an intermediary between the rolls and the main frame. It provides a dedicated mounting structure for vibration-prone components, serving as a buffer that reduces vibration transmission to the overall machine frame.
4Strength
If a heavy and complicated frame construction is used, then structural stability is ensured, but material and labor costs increase
Solution Approach 1:
The frame is segmented into a main frame providing structural stability and a separate compact unit for functional components. This allows the main frame to be simpler and lighter while the compact unit can be optimized for its specific functions, reducing overall material and manufacturing costs.
Solution Approach 2:
Multiple support functions are merged into the self-supporting compact unit, eliminating the need for a heavy distributed frame structure. This consolidation reduces material requirements and manufacturing complexity while maintaining necessary structural stability.
Data Source
Figure 1
Figure 2~3
Figure 4A~4
AI summary
The invention discloses a pre-assembled self-supporting unit (1) for a twine wire forming section. The unit comprises an integrated save-all tray (25) and other integrated elements such as cross walkway (17) , piping beam (10) , connecting arms (8) . The rolls (2) for supporting at least one forming clothing loop (4) and the other elements are mounted onto this separate unit instead of being mounted onto the same machine frame. The unit provides a diminished foot print for the forming section, and it is dimensioned to fit in a standard transport container.