Bobbin Replacement Method Using Marking Sticker for Electrode Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The process of attaching an electrode sheet to a bobbin is inefficient due to the use of transparent double-sided tape, which is not recognized by visual sensors, leading to delays and the need for human intervention.
Innovation Solution
A method involving a control part to automatically attach the electrode sheet to a new bobbin using a second bobbin with a marking sticker and double-sided tape, where the control part recognizes the sticker position with a color sensor to align the tape with the sheet and cut the sheet accurately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If transparent double-sided tape is used to attach the electrode sheet to the base film, then the attachment is secure and invisible, but the visual sensor cannot recognize the tape position causing process delays and requiring human intervention
Solution Approach 1:
A marking sticker is introduced as an intermediary element between the transparent double-sided tape and the visual sensor. The marking sticker serves as a visible mediator that enables the sensor to detect the tape position indirectly, while the transparent tape itself remains invisible and maintains its attachment function. This resolves the contradiction by adding an auxiliary component that bridges the gap between the invisible tape and the sensor's detection capability.
Solution Approach 2:
The marking sticker introduces color contrast to the otherwise transparent and invisible components. By applying a colored marking sticker at the tape position, the system creates a detectable visual signal for the sensor without compromising the transparency and aesthetic quality of the actual attachment tape. This allows the sensor to recognize positions based on color differences while the functional tape remains transparent.
2Extent of automation
If a marking sticker is added to the second bobbin to enable sensor recognition, then automation is achieved, but the device complexity increases
Solution Approach 1:
The marking sticker and the double-sided tape are combined into a single integrated component attached to the second bobbin. Rather than being separate elements requiring independent handling, they form a unified attachment assembly that simplifies the overall system. The marking sticker serves dual purposes: enabling sensor detection and indicating the correct attachment position, while the transparent tape provides the actual bonding function.
3Device complexity
If the electrode sheet is immediately wound on the bobbin, then the process is simplified, but the wound electrode portion becomes a usable loss
Solution Approach 1:
A base film is pre-wound onto the bobbin before the electrode sheet is attached. This preliminary base film layer serves as an intermediary that prevents the electrode sheet from being directly wound onto the bobbin, thereby eliminating the loss of the initial wound portion. The base film acts as a sacrificial layer that absorbs the waste that would otherwise occur during the winding initiation phase.
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
Automates the attachment process, improving efficiency and reducing waste by ensuring precise alignment and cutting of the electrode sheet.
Implementation Method 1
the control part recognizes the sticker position with a color sensor
Implementation Method 2
a second bobbin with double-sided tape and a marking sticker attached to same side
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Disclosed herein relates to a bobbin replacement method for automatically connecting an electrode sheet to a new bobbin via a control part. Specifically, the bobbin replacement method of the present disclosure includes: a first winding step of winding an electrode sheet onto a first bobbin; a step of preparing a second bobbin with double-sided tape and a marking sticker attached to one side, and disposed to be spaced apart from the electrode sheet by a predetermined distance; a positioning step for adjusting the stop position of the second bobbin by rotating the second bobbin; an attachment step of moving the second bobbin so that the double-sided tape is attached to the electrode sheet; a cutting step of cutting an electrode sheet extending between the first bobbin on which the electrode sheet is wound and the second bobbin; and a second winding step of rotating the second bobbin to wind the electrode sheet onto the second bobbin, wherein in the positioning step, the control part controls a stop position of the second bobbin based on a position of the marking sticker.