Disposable Diaper Folding Device With Inverted Conveyance
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Solution Overview
Problem
Conventional disposable diaper folding devices face challenges in efficiently packaging diapers due to the waist opening getting stuck when the crease is directed downstream, preventing effective folding and packaging.
Innovation Solution
A method and device where the crease of the disposable diaper is directed downstream, with conveying belts adjusting to separate the front and rear parts, allowing the side portions to be folded inward, and a folding unit that uses impellers to fold the sides between the front and rear parts, ensuring the crease is only attracted in specific regions to facilitate separation and folding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the waist opening is directed to the downstream side in the conveying direction, then the side portions can be folded inward between the front part and the rear part of the main body portion, but the edge portion of the waist opening gets stuck on the opening portion of the packaging bag, preventing efficient packaging
Solution Approach 1:
The patent inverts the conventional conveying direction by directing the crease of the main body portion to the downstream side instead of the waist opening. This inversion allows the folded diaper to be conveyed with the waist opening away from the packaging bag opening, preventing the edge portion from getting stuck and enabling efficient packaging while maintaining the folding function
2Productivity
If the crease of the main body portion is directed to the downstream side, then the disposable diaper can be conveyed in a direction suitable for packaging, but the front part and the rear part of the main body portion are constrained to each other by the crease, preventing separation
Solution Approach 1:
The patent employs dynamic conveying belts that can independently adjust their conveying speeds. The first conveying belt conveys the front part of the main body portion, while the second conveying belt conveys the rear part. By controlling these belts to move at different speeds, the system dynamically separates the front and rear parts despite the constraining crease, enabling both efficient packaging orientation and proper separation for folding
3Ease of operation
If two conveying belts are used to convey the front part and rear part separately, then the front part and rear part can be separated to widen the waist opening, but the edge portion of the waist opening still gets stuck when packaged with the waist opening directed downstream
Solution Approach 1:
The patent inverts the conventional approach by directing the crease to the downstream side rather than the waist opening. Combined with the differential speed control of the two conveying belts, this inversion ensures that when the diaper is folded and conveyed for packaging, the waist opening is positioned away from the packaging bag opening, preventing the edge portion from getting stuck and enabling efficient packaging
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
Enables efficient folding and packaging of disposable diapers by allowing the front and rear parts to separate and the side portions to be folded inward, reducing thickness and improving packaging efficiency.
Implementation Method 1
the front part of the main body portion is attracted by one of the first belt and the second belt and the rear part of the main body portion is attracted by the other of the first belt and the second belt
Data Source
AI summary
The front part and the rear part of a diaper main body are each attracted by a first belt and a second belt arranged so as to separate from each other as the first belt and the second belt move to the downstream side of the conveying path. The diaper main body is attracted by the first belt only in a range other than a non-attracting range thereof covering from a crease to a prescribed position in a longitudinal direction. When the respective belts are moved, the front part and the rear part of the diaper main body are separated from each other in a state in which the diaper main body separates from the first belt in the non-attracting range. Then, respective side panels are folded inward between the front part and the rear part of the diaper main body that separate from each other.