Multi-Gripper Wire Transfer Apparatus for Solar Cell Tabbing
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Solution Overview
Problem
The tabbing process in solar cell module manufacturing, where wires are connected to solar cells, often results in poor bonding, degrading the performance and quality of the solar cell module due to inadequate wire transfer techniques.
Innovation Solution
A wire transfer apparatus comprising a first and second transfer gripper unit, a gripper transfer unit, and a wire movement device, which allows for precise gripping, adjustment, and movement of wires to prevent deformation and ensure stable transfer to desired positions, using gap and distance adjustment mechanisms to maintain wire integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional wire transfer methods are used, then the wire transfer process is simple, but the wire deforms during transfer
Solution Approach 1:
The transfer gripper is divided into multiple independent gripping units (first gripping unit, second gripping unit, third gripping unit) that can grip the wire at different positions simultaneously. This segmentation allows precise control of wire transfer while minimizing deformation through distributed gripping points.
Solution Approach 2:
The wire is gripped at multiple positions before transfer begins, and the gripping units are positioned in advance at specific intervals along the wire. This preliminary multi-point gripping prevents wire deformation during the transfer process by distributing the gripping force evenly.
2Reliability
If single-point wire gripping is used, then the apparatus structure is simple, but the wire transfer stability is poor
Solution Approach 1:
The transfer gripper is segmented into multiple independent gripping units that operate simultaneously. Each gripping unit grips the wire at a different position, providing stable transfer through distributed contact points rather than a single gripping point.
Solution Approach 2:
Multiple gripping units are combined into a single integrated transfer gripper assembly that moves as one unit. This merging of multiple gripping functions into one coordinated mechanism achieves stable wire transfer while maintaining manageable structural complexity.
3Manufacturing precision
If multiple gripping units are used, then wire transfer precision improves, but the adjustment complexity increases
Solution Approach 1:
Multiple gap adjustment mechanisms are merged into an integrated system where the gripping units share common adjustment features. The first, second, and third gripping units can be adjusted relative to each other through coordinated movement, simplifying the operation compared to completely independent adjustment mechanisms.
Solution Approach 2:
The gripping units are designed with dynamic adjustment capabilities that allow the gaps between units to be modified during operation. This dynamic adjustment feature enables precise wire positioning while maintaining ease of operation through movable rather than fixed gap structures.
Data Source
AI summary
Provided is a wire transfer apparatus of a tabbing apparatus. A wire transfer apparatus of a tabbing apparatus according to the present invention includes: a first transfer gripper unit configured to grip a wire; a second transfer gripper unit disposed in parallel to the first transfer gripper unit and configured to grip the wire at a location spaced apart from the first transfer gripper unit together with the first transfer gripper unit; and a gripper transfer unit configured to transfer the wire while moving the first transfer gripper unit and the second transfer gripper unit.