Suction Belt Conveyor for Strip Substrate Edge Alignment
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Solution Overview
Problem
Existing conveying devices for strip-shaped substrates in lithium ion battery production struggle with maintaining stable substrate conveyance, particularly due to misalignment and sagging at the widthwise ends caused by vibration or weight of the coating film, which affects the formation of uniform coating films on both sides.
Innovation Solution
A conveying device equipped with conveyor units featuring a belt member with suction portions and a traveling direction adjustment unit that adjusts the suction force to correct misalignment and sagging, assisted by end position detection and speed adjustment units to maintain substrate stability during transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the suction conveyor is fixed at a position to prevent defects from contact with wet coating film, then coating film quality is improved, but the ability to adjust substrate widthwise end positions deteriorates
Solution Approach 1:
The suction conveyor is divided into multiple independent suction units arranged along the substrate transport direction. Each suction unit can independently adjust its suction force and position, allowing selective adjustment of substrate widthwise ends without affecting the entire substrate or coating film quality
Solution Approach 2:
The suction conveyor transitions from a fixed configuration to a dynamic one where each suction unit can independently adjust its suction force and position. This dynamic capability allows the system to adapt to substrate misalignment while maintaining coating film quality by adjusting only where needed
2Reliability
If the suction conveyor attracts and holds the substrate to assist transport, then substrate transport stability is improved, but misalignment correction capability deteriorates
Solution Approach 1:
Different regions of the suction conveyor apply different suction forces to different parts of the substrate. The suction units corresponding to widthwise ends apply adjustable suction forces for position correction, while other regions maintain stable transport, achieving both transport stability and position accuracy
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 adjusts the positions of the substrate widthwise ends, reducing sagging and ensuring uniform coating film thickness on both sides by maintaining stable substrate conveyance.
Implementation Method 1
a belt member with a suction portion to which a prescribed surface of the substrate in a vicinity of corresponding one of widthwise ends of the substrate is configured to be attracted by suction force
Data Source
AI summary
A conveying device comprises a conveying section and at least a pair of conveyor units. The conveying section is configured to convey a strip-shaped substrate in a transport direction. The conveyor units are configured to assist transport of the substrate by the conveying section. The conveyor units each include a belt member with a suction portion to which a prescribed surface of the substrate in a vicinity of corresponding one of widthwise ends of the substrate is configured to be attracted by suction force, the belt member being configured to apply a directional force to the substrate in accordance with a traveling direction of the suction portion, and a traveling direction adjustment unit that is configured to adjust the traveling direction of the suction portion.