Rotatable Folding Beam for Quick Knife Height Changes in Web Folding
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Solution Overview
Problem
Existing folding devices for material webs require costly and time-consuming knife replacement for changing fold heights, disrupting continuous operation and being prone to errors.
Innovation Solution
A folding device with multiple folding knives fixed to a rotating beam, allowing for quick and inexpensive knife changes by rotating the beam to switch between knives, eliminating the need for disassembly and assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the folding knife is fixed to the folding bar by screws, bolts, or similar fixing elements for specific folding heights, then the folding device can achieve stable and reliable folding at predetermined heights, but changing the fold height requires time-consuming knife replacement which interrupts continuous operation and increases costs
Solution Approach 1:
The folding beam is made rotatable about its longitudinal axis, transforming the static knife positioning system into a dynamic one. The folding knife can be quickly switched between different heights by rotating the folding beam, eliminating the need for time-consuming knife replacement while maintaining stable folding at each height position
Solution Approach 2:
The single folding beam structure is designed to perform multiple functions by accommodating folding knives of different heights. Through rotation, the same folding beam can present different folding knives for different fold height requirements, making the device universally applicable to various folding heights without requiring separate folding beams for each height
2Manufacturing precision
If the folding knife is fixed to the folding bar for specific folding heights, then the folding device can maintain consistent folding quality at predetermined heights, but knife replacement is prone to errors and requires relatively high effort and costs
Solution Approach 1:
The rotatable folding beam allows operators to switch between folding knives by simple rotation rather than disassembly and reassembly. This dynamic switching mechanism maintains precise folding height consistency while dramatically reducing operational effort and eliminating errors associated with knife replacement procedures
Solution Approach 2:
Multiple folding knives for different heights are pre-mounted on the folding beam in specific positions. The beam is designed so that rotation brings the required knife into the working position in advance, eliminating the need for operators to select and install the correct knife manually, thus preventing errors and reducing effort
Data Source
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AI summary
Folding device for planar material webs (1) with a feed table for the continuous feeding of the material web and with at least one folding beam (3, 4) with a first folding knife (5) fixed to it. The folding beam can be moved up and down intermittently so that folds (7) can be introduced into the material web by the folding knife acting on the material web. At least a second folding knife (6) is fixed to the folding beam. By rotating the folding beam about an axis of rotation (R), the second folding knife is available for introducing the folds instead of the first folding knife.