Suction Roller Sheet End Detection System
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Solution Overview
Problem
Existing sheet delivery systems face challenges in maintaining detection accuracy of the end section of a sheet without creating additional work, particularly when detecting the end section of a standby original material roll without a mark, and risk declining detection accuracy due to similar color and material of the sheets.
Innovation Solution
A sheet delivery system that includes a roll holding unit, a joining unit, an end section detector, an end section conveying apparatus, and suction rollers to separate and detect the end section of the standby original material roll, allowing for accurate detection and conveyance without additional work, and a method involving a delivery step, rotational driving, detection, conveying, and joining steps to seamlessly transition between original material rolls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If a mark is provided on the standby-side original material roll to detect the end section position, then detection capability is improved, but additional work is created to remove or discard the marked portion
Solution Approach 1:
The suction roller automatically separates the end section of the sheet from the standby-side original material roll through vacuum suction, enabling the system to detect and process the end section without requiring external marks on the sheet or roll. The end section detector then detects the separated end section directly, making the system self-sufficient for detection purposes.
Solution Approach 2:
The end section of the sheet is extracted from the standby-side original material roll by the suction roller before detection. This extraction allows the end section detector to detect the separated end section in a dedicated detection position, eliminating the need for marks on the sheet while maintaining accurate detection capability.
2Ease of manufacture
If no mark is provided on the standby-side original material roll, then additional work is prevented, but detection accuracy of the end section may decline due to similar color and material of sheets
Solution Approach 1:
The sheet is segmented into the main body portion and the end section through vacuum suction by the suction roller. This physical separation creates a distinct detection target (the separated end section) that can be detected with high accuracy by the end section detector, even without marks, because the end section is physically isolated from the rest of the sheet.
Solution Approach 2:
The suction roller acts as an intermediary that separates the end section from the standby-side original material roll. This intermediary action creates a physical gap and isolates the end section, making it a distinct detection target that improves detection accuracy without requiring marks on the sheet material.
3Device complexity
If the end section is detected while still on the standby-side original material roll, then detection setup is simplified, but detection accuracy declines due to the curved surface and winding structure
Solution Approach 1:
The suction roller performs a preliminary action by separating the end section from the standby-side original material roll before detection occurs. This preliminary separation places the end section in an optimal detection position, ensuring high detection accuracy by detecting the end section on a flat, accessible surface rather than on the curved roll surface.
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 system maintains accurate detection of the sheet end section without additional work, ensuring reliable detection and continuous sheet delivery by using suction rollers and an end section detector positioned for optimal detection, thereby preventing additional work and ensuring high detection accuracy.
Implementation Method 1
at least one suction roller which is configured to come into rolling contact with an outer peripheral surface of the standby-side original material roll in accordance with the standby-side original material roll being rotationally driven, and which includes an outer peripheral surface configured to suction the end section of the sheet in order to separate the end section of the sheet from the standby-side original material roll
Data Source
AI summary
A sheet delivery system includes: an end section detector which detects a position of an end section of a sheet; an end section conveying apparatus which holds the end section of the sheet and which conveys the end section of the sheet to a joining unit; a roll driving motor which rotationally drives a standby-side original material roll around a central axis thereof; and a suction roller which is capable of coming into rolling contact with an outer peripheral surface of the standby-side original material roll, and which includes an outer peripheral surface capable of suctioning the end section of the sheet in order to separate the end section of the sheet from the standby-side original material roll. The end section detector is attached at a position which enables detection of the end section of the sheet separated from the standby-side original material roll by the suction roller.