Absorbent Sheet Particle Ejection Roller Groove Design
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Solution Overview
Problem
Existing sheet article manufacturing apparatuses for absorbent articles face issues with particle scattering during the ejection and transfer process, leading to waste and increased manufacturing costs due to inefficient particle placement on sheet members.
Innovation Solution
The apparatus incorporates a cylinder part with holes arranged circumferentially, a first sheet conveying roller with annular grooves, and a second sheet conveying roller with an annular groove or absorber to absorb impact and ensure accurate placement of particles on strip-like regions of the sheet article, reducing scattering and enhancing particle fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If particles are ejected from the cylinder part onto the first sheet member, then the particle supply efficiency is improved, but some particles collide with the sheet conveying roller and scatter around causing waste
Solution Approach 1:
A guide member is introduced as an intermediary component between the cylinder part and the sheet conveying roller. The guide member has a guide surface that directs particles from the cylinder part onto the first sheet member, preventing particles from colliding with the sheet conveying roller and scattering. This mediator resolves the contradiction by maintaining efficient particle supply while eliminating particle waste.
2Manufacturing precision
If the second sheet member is placed on the first sheet member immediately after particle ejection, then the particle placement accuracy is improved, but particles may collide with the sheet conveying roller causing scattering
Solution Approach 1:
The guide member serves as a mediator that enables the second sheet member to be placed on the first sheet member immediately after particle ejection without causing particle scattering. The guide surface of the guide member directs particles safely onto the sheet member, allowing the rapid placement process to continue while preventing collisions with the sheet conveying roller.
3Productivity
If the cylinder part rotates at high speed to eject particles, then the manufacturing efficiency is improved, but particle scattering increases due to collision with the sheet conveying roller
Solution Approach 1:
The guide member is introduced as a mediator that allows the cylinder part to rotate at high speed for improved manufacturing efficiency while preventing particle scattering. The guide surface ensures that even at high rotation speeds, particles are directed accurately onto the first sheet member without colliding with the sheet conveying roller, thus maintaining both efficiency and precision.
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
This configuration effectively reduces particle scattering, allows for accurate fixation on the sheet article, and decreases manufacturing costs by minimizing waste and improving the efficiency of the particle placement process.
Implementation Method 1
the second sheet conveying roller having an outer side surface, the outer side surface being rotated around a second central axis parallel to the rotation axis, for conveying a second sheet member along the outer side surface to the vicinity of the lowermost portion to place the second sheet member on the first sheet member which has been supplied with the particles, the second sheet member being continuous sheet; and a sheet bonding part for bonding the second sheet member on the first sheet member; wherein the second sheet conveying roller has a groove or an absorber on the outer side surface
Data Source
Figure 1
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Figure 4~6
AI summary
Concave portions filled with particles of high-absorbent resin are arranged on a side surface of a cylinder part in its circumferential direction. When each concave portion passes about the lowermost portion, the particles are ejected. A first roller conveys a first sheet member so that the first sheet member passes near the above lowermost portion. A second roller is located anterior to the above lowermost portion with respect to a moving direction of the side surface of the cylinder part at the above lowermost portion, and conveys a second sheet member to the vicinity of the above lowermost portion, to place the second sheet member on the first sheet member which has been supplied with particles. In the second roller, annular grooves are formed on the side surface. Therefore, impact on paticles which collide with the second sheet member on the second roller is abosorbed and scattering of particles is reduced.