Tray With Segmented Guide Surfaces For Roll Width Positioning
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Solution Overview
Problem
Existing sheet feed cassettes struggle to securely position roll sheets with small widths, leading to significant movement in the width direction, unlike roll sheets with larger widths.
Innovation Solution
A tray with a first and second accommodating part, each equipped with guide surfaces to stabilize rolls of different widths, ensuring proper positioning in the width direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single accommodating part with fixed guide surfaces is used, then the structure is simple, but rolls with small widths cannot be positioned stably
Solution Approach 1:
The accommodating part is divided into multiple sections: a first accommodating part with first guide surfaces for wide rolls, and a second accommodating part with second guide surfaces for narrow rolls. This segmentation allows each section to be optimized for specific roll widths, improving positioning stability without requiring complete redesign of the entire structure.
Solution Approach 2:
Different guide surfaces are provided at different locations within the accommodating part. The first guide surfaces are positioned for wide rolls while the second guide surfaces are positioned for narrow rolls. This local differentiation ensures that each roll type receives appropriate positioning support tailored to its specific width characteristics.
2Manufacturing precision
If guide surfaces are positioned for wide rolls, then wide rolls are positioned well, but narrow rolls move significantly in the width direction
Solution Approach 1:
The guide surface system is segmented into at least a first guide surface for wide rolls and a second guide surface for narrow rolls. Each guide surface is specifically positioned and dimensioned to provide optimal positioning for its target roll width, ensuring that both wide and narrow rolls achieve precise positioning without interference from the other.
Solution Approach 2:
Different regions of the accommodating part have different guide surface configurations. The first guide surfaces are located and dimensioned for wide roll contact, while the second guide surfaces are located and dimensioned for narrow roll contact. This local quality differentiation ensures that each roll type interacts with the appropriately sized guide surfaces for stable positioning.
Data Source
AI summary
A tray includes: a first accommodating part accommodating a first roll having a first sheet wound thereon in a roll shape; and a second accommodating part accommodating a second roll having second sheet, of which width is smaller than a width of the first sheet, wound thereon in a roll shape, a width of the second roll being smaller than a width of the first roll. The first accommodating part has a pair of first guide surfaces facing, respectively, end surfaces in a width direction of the first roll accommodated in the first accommodating part. The second accommodating part has a pair of second guide surfaces facing, respectively, end surfaces in the width direction of the second roll accommodated in the second accommodating part. The pair of second guide surfaces are disposed on an inner side in the width direction with respect to the pair of first guide surfaces.