Fabric Tension Relieving Member for Intermittent Printing Alignment
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Solution Overview
Problem
Conventional fabric printing apparatuses experience tension fluctuations in fabric due to intermittent operation, leading to printing misalignment and difficulty in achieving high-resolution printing on elastic fabrics.
Innovation Solution
A tension fluctuation alleviating device is introduced, featuring a support member and a tension relieving member with an elastically deformable portion and contacting portion, which absorbs and distributes fabric tension uniformly across the width direction, preventing misalignment and ensuring consistent printing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the supply roller is indirectly driven by the take-up roller during intermittent printing, then the printing apparatus can operate intermittently, but the fabric tension fluctuates due to operation delay caused by inertia
Solution Approach 1:
The supply roller is driven in advance before the take-up roller operates, so that the fabric is supplied to the printing mechanism without delay. This preliminary action eliminates the operation delay and inertia-related tension fluctuations that occur when the supply roller is indirectly driven.
Solution Approach 2:
A fabric tensioner is introduced as an intermediary device between the supply roller and the printing mechanism. The tensioner maintains constant fabric tension by applying back pressure, thereby stabilizing the fabric against tension fluctuations caused by intermittent operation and inertia.
2Productivity
If the fabric tension fluctuates repeatedly during intermittent operation, then the take-up roller can pull the fabric intermittently, but the fabric expands and contracts causing printing misalignment
Solution Approach 1:
The fabric tensioner acts as a mediator between the intermittent fabric feeding and the printing mechanism. By maintaining constant tension through back pressure, it prevents fabric expansion and contraction, thereby eliminating printing misalignment while allowing intermittent feeding to continue.
Solution Approach 2:
The fabric tensioner dynamically adjusts the back pressure parameter to maintain constant fabric tension despite intermittent operation. This parameter change compensates for the effects of fabric elasticity, preventing expansion and contraction that lead to printing errors.
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
The device effectively reduces fabric tension fluctuations, preventing printing misalignment and enabling high-resolution printing by absorbing and distributing fabric tension, ensuring consistent printing quality.
Implementation Method 1
a tension relieving member including an elastically deformable elastic portion supported by the support member and extending from the support member toward the fabric
Data Source
AI summary
A tension fluctuation alleviating device, for use in a fabric printing apparatus including a fabric supplying device, a printing mechanism, a guide between the fabric supplying device and the printing mechanism, and a fabric take-up device, the fabric printing apparatus configured to perform printing on the fabric while intermittently sending the fabric to the printing mechanism, includes a support member provided between the fabric supplying device and the guide device and extending across a width direction of the fabric, and a tension relieving member including an elastically deformable elastic portion supported by the support member and extending from the support member toward the fabric, and a contacting portion closer to the fabric than the elastic portion and contacting with the fabric.