Roller Axial Force Detection for Meandering Correction
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Solution Overview
Problem
Conventional base material processing apparatuses face challenges in consistently correcting meandering of elongated strip-shaped materials during transport, especially when processing parts are closely spaced, leading to potential re-meandering and difficulties in integrating additional correction mechanisms.
Innovation Solution
Incorporating a sensing mechanism using existing transport rollers to detect axial forces, predict meandering, and adjust the base material's widthwise position through a correction system, allowing for real-time correction without the need for additional space or separate correction apparatuses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a meandering correction apparatus is added upstream of the processing part, then the meandering of the base material can be corrected earlier, but the space required for the apparatus increases and it becomes difficult to integrate near existing processing parts
Solution Approach 1:
The patent applies multi-functionality by enabling existing transport rollers to serve dual purposes: their original transport function plus a new meandering detection and correction function. Force sensors are integrated into the rollers to detect axial forces indicating meandering, and the rollers themselves act as correction elements by adjusting their position or force application to counteract meandering, eliminating the need for separate correction apparatus and saving space.
Solution Approach 2:
The patent merges the meandering correction function with the existing transport mechanism. The force detection part is integrated into the transport rollers, and the correction action is performed through the same rollers that transport the material. This consolidation combines multiple functions into a single integrated system, reducing the overall space requirement while maintaining correction effectiveness.
2Manufacturing precision
If a meandering correction is made upstream of the processing part, then the initial meandering can be addressed, but the base material may meander again before reaching the processing part
Solution Approach 1:
The patent implements feedback control by continuously detecting the axial force on the sensing roller, which reflects the current meandering state of the base material. The meandering prediction part processes this force information to predict future meandering behavior, and the meandering correction part continuously adjusts the base material position based on these predictions. This closed-loop feedback system ensures consistent alignment throughout the transport process, preventing re-meandering.
Solution Approach 2:
The patent applies preliminary action by using the force detection and prediction mechanisms to anticipate meandering before it significantly affects processing quality. The system predicts future meandering based on current force measurements and takes corrective action in advance, adjusting the base material position proactively to prevent meandering from occurring during transport to the processing part.
3Productivity
If multiple processing heads are arranged in the transport direction, then processing efficiency increases, but the meandering state changes further as the material passes through each head
Solution Approach 1:
The patent uses continuous feedback from the force detection part positioned near the processing heads to monitor meandering as it occurs during processing. The system detects axial forces on the sensing roller that result from meandering induced by multiple processing heads, predicts the meandering state, and applies real-time correction to maintain consistent alignment throughout the processing sequence, ensuring quality despite high throughput.
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 approach effectively senses and corrects meandering in real-time, improving processing quality by utilizing existing rollers to maintain the base material's alignment, preventing re-meandering and ensuring consistent processing near processing parts.
Implementation Method 1
a force detection part for detecting a force applied in an axial direction of a rotation shaft of a sensing roller
Data Source
AI summary
A base material processing apparatus includes a transport mechanism, a force detection part, a meandering prediction part, a processing part, and a controller. The transport mechanism transports an elongated strip-shaped base material in a longitudinal direction thereof along a transport path aimed by a plurality of rollers of the transport mechanism. The force detection part detects a force applied to a sensing roller in an axial direction of a rotation shaft thereof, the sensing roller being at least one of the plurality of rollers. The controller predicts the meandering state of the base material to output meandering prediction information, based on the force applied to the sensing roller in the axial direction of the rotation shaft thereof. The meandering prediction part corrects the widthwise position of the base material relative to the processing part, based on the meandering prediction information. Thus, the base material processing apparatus is capable of sensing the meandering state of the base material through the use of the existing rollers of the transport mechanism in the processing part, and is capable of correcting the widthwise position of the base material relative to the processing part.