Multi-Chamber Suction Holding for Absorbent Sheet Delivery
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Solution Overview
Problem
In the manufacturing of absorbent articles, such as disposable diapers, the suction force used to hold and deliver sheet-like members can be uneven, leading to decreased holding precision and potential deformation of the first sheet-like member during delivery, which affects the attaching precision to the second sheet-like member.
Innovation Solution
The use of a holding section with at least two suction chambers, where the first suction chamber communicates with holes for the initial section and the second suction chamber communicates with holes for the subsequent section, both partitioned to prevent air from passing through between them, ensuring consistent suction force throughout the delivery process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single suction chamber is used to hold the first sheet-like member, then the device complexity is reduced, but the holding precision deteriorates when delivering timing shifts
Solution Approach 1:
The single suction chamber is divided into multiple suction chambers (first suction chamber and second suction chamber), each responsible for different sections of the sheet-like member. This segmentation ensures that when one section is delivered, the other sections remain under stable suction, preventing deformation and maintaining attaching precision.
2Device complexity
If suction holes are in communication with one suction chamber, then the device complexity is reduced, but the suction force stability deteriorates when parts are delivered at different times
Solution Approach 1:
The suction system is segmented into multiple independent suction chambers, each communicating with specific suction holes. This allows independent control of suction force for different sections, ensuring that delivered sections do not affect the suction stability of remaining sections.
3Productivity
If the first sheet-like member is delivered sequentially from one section to another, then the productivity is improved, but the holding precision deteriorates due to suction resistance changes
Solution Approach 1:
The holding surface is divided into multiple sections, each with its own suction chamber. This allows sequential delivery of different sections without interfering with the suction stability of other sections, maintaining holding precision throughout the delivery process.
Solution Approach 2:
Different sections of the holding surface have independent suction control, allowing localized suction force adjustment. This ensures that each section maintains appropriate holding force according to its delivery status, preventing deformation while enabling efficient sequential delivery.
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 method enhances the attaching precision of the first sheet-like member to the second sheet-like member by maintaining consistent suction force, reducing deformation and improving the overall delivery process.
Implementation Method 1
holding of the first sheet-like member with this holding surface is generally performed using suction force that is generated on the holding surface with suction air from the multiple suction holes
Data Source
AI summary
A method of manufacturing a composite body of a sheet-like member of an absorbent article, the method includes: holding a first sheet-like member on a holding surface of a holding section; and delivering and attaching the first sheet-like member from the holding surface to a second sheet-like member. The first sheet-like member has a section that is to be delivered first, and a section that is to be delivered subsequently during delivery to the second sheet-like member. The first sheet-like member is held on the holding surface with suction air from a plurality of holes that have been formed on the holding surface. The holding section has at least two suction chambers. A first suction chamber is in communication with holes that suck the section that is to be delivered first, and a second suction chamber is in communication with holes that suck the section that is to be delivered subsequently.