Elastic Laminate Guide Member Drive Mechanism
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Solution Overview
Problem
Existing manufacturing devices for elastic laminates face instability in positioning the elastic member between sheets due to unregulated movement of the guide member relative to the nip rolls, leading to inconsistent positioning of the elastic member.
Innovation Solution
A device with a drive mechanism that includes a belt, pulleys, and a regulating mechanism to permit movement along the travel path while preventing movement orthogonal to it, ensuring stable positioning of the elastic member between the sheets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the guide member is fixed only to an intermediate part of the belt in the drive mechanism, then the configuration of the manufacturing device can be simplified, but the guide member may move in a direction orthogonal to the travel path when the belt moves, causing unstable positioning of the elastic member between the sheets
Solution Approach 1:
The guide member is divided into multiple fixing positions along the belt, with fixing parts provided at both the intermediate part and the end part of the belt. This segmentation of the fixing structure prevents the guide member from moving orthogonally to the travel path while maintaining a relatively simple overall configuration.
Solution Approach 2:
The guide member is preliminarily secured to multiple positions on the belt before operation begins. By pre-fixing the guide member at both the intermediate and end portions of the belt, the design prevents potential orthogonal movement during operation, ensuring stable positioning of the elastic member without requiring complex real-time control mechanisms.
2Ease of operation
If the guide member is allowed to move freely with the belt, then the drive mechanism operation is simple, but the position of the guide member with respect to the nip rolls changes, causing unstable positioning of the elastic member
Solution Approach 1:
The belt is divided into multiple fixing positions (intermediate part and end part), and the guide member is fixed at these segmented locations. This allows the belt to operate freely for reciprocating motion while preventing orthogonal drift that would compromise positioning accuracy.
Solution Approach 2:
The fixing parts act as intermediaries between the guide member and the belt, selectively allowing movement in the travel path direction while restraining movement in the orthogonal direction. This mediator structure maintains both operational simplicity and positioning stability.
Data Source
AI summary
It is aimed to provide a device for manufacturing an elastic laminate which device can stably position an elastic member with respect to both sheets. A drive mechanism includes a timing belt having a guide plate fixed thereto, a plurality of timing pulleys configured such that the timing belt is provided thereon along an annular path including a travel path, a motor configured to drive the timing pulleys to be successively rotated in forward and reverse directions to reciprocate the guide plate along the travel path, and a slider and a rail configured to permit a movement of the guide plate relative to both nip rolls along the travel path and regulate a movement of the guide plate relative to the both nip rolls in a direction orthogonal to the travel path.