Winding Device With Pivotable Arm for Stable Pressing
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Solution Overview
Problem
Winding devices face issues with air entering between layers of the medium due to reduced frictional force, leading to slippage, and maintaining a constant pressing load is challenging due to changes in tension and roll diameter during winding.
Innovation Solution
A winding device with a pivotable arm supporting a pressing member that maintains a constant pressing load by ensuring a consistent angle between the arm and the medium transport direction, despite changes in roll diameter, using a guide shaft member and a pivotable arm configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressing section presses the medium to be wound against the winding roller to suppress air entry and winding slippage, then winding reliability is improved, but the pressing load changes as winding progresses and roll diameter changes, making it difficult to maintain constant pressing load
Solution Approach 1:
The pressing member is made movable along the guide shaft member to dynamically adjust its position. As the roll diameter increases during winding, the pressing member automatically moves to maintain the correct pressing distance and constant pressing load, resolving the contradiction between maintaining reliable pressing and adapting to changing roll dimensions
Solution Approach 2:
The system provides automatic feedback adjustment through the movable pressing member mechanism. The change in roll diameter naturally causes the pressing member to move along the guide shaft, creating a self-regulating system that maintains constant pressing load without external intervention, thus stabilizing the pressing condition throughout the winding process
2Reliability
If the pressing load is increased to prevent winding slippage, then winding reliability is improved, but the medium may be wrinkled due to excessive pressing force
Solution Approach 1:
The pressing load parameter is kept constant throughout the winding process by allowing the pressing member to move along the guide shaft as roll diameter changes. This maintains optimal pressing force that is sufficient to prevent slippage but not excessive to cause wrinkling, resolving the contradiction between reliability and surface quality
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 solution effectively suppresses air entry between medium layers and maintains a consistent pressing load, preventing slippage and wrinkling by stabilizing the tension component, even as the roll diameter changes.
Implementation Method 1
an arm that extends in a direction intersecting an extension direction of the pressing member and that is configured to support the pressing member, wherein the arm is configured to pivot about a shaft coaxial with a shaft of the guide shaft member
Implementation Method 2
when the medium is wound around the winding roller, air enters between layers of the medium, and frictional force between the layers decreases, so that there is a possibility of occurrence of winding slippage
Data Source
AI summary
A winding unit includes a winding roller configured to wind up an elongated medium M that was transported, a cylindrical pressing member that extends along a rotation shaft of the winding roller and that is configured to press the medium M toward the winding roller at a position where the medium M is wound by the winding roller, a cylindrical winding guide member that extends along the rotation shaft of the winding roller, that has a fixed position with respect to the winding roller, and that is configured to guide the medium M to the winding roller before the medium is wound up by the winding roller, and arms that extend in a direction intersecting an extension direction of the pressing member and that are configured to support the pressing member, wherein the arms are configured to pivot about a central shaft of the winding guide member.