Segmented Holding Clips for PCB Transport Stability
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Solution Overview
Problem
Thin, flat substrates such as printed circuit boards face challenges in transportation due to lack of stability and sensitivity to etching liquids, often requiring delicate handling to avoid damage during wet-chemical processes, and existing holding mechanisms may not adequately address these issues.
Innovation Solution
The use of holding means with two-part brackets that protrude on both sides of the substrates, providing a positive connection and stability through projections and adjustable locking mechanisms, allowing substrates to be held securely without rollers, and enabling tensioned transport through a transport device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If substrates are placed on rollers or roller conveyors for transport, then transport is enabled, but substrates lack sufficient stability and may be damaged by spraying or lying on rollers
Solution Approach 1:
The holding means are divided into multiple individual clips that connect adjacent circuit boards together in a chain-like structure. Each clip independently secures a substrate, distributing the support function across multiple discrete elements rather than relying on a continuous roller surface.
Solution Approach 2:
The holding means act as an intermediary between the transport device and the substrate. Instead of substrates contacting rollers directly, the holding means provide an intermediate connection that secures substrates while allowing the transport device to move them through the treatment process.
2Reliability
If substrates are connected by holding means for stable transport, then substrate stability improves, but device complexity increases compared to simple roller conveyors
Solution Approach 1:
The holding means are designed to automatically grip and release substrates through their spring-loaded clips. The clips self-adjust to substrate thickness and automatically secure adjacent boards together without requiring complex control systems or manual intervention.
Solution Approach 2:
The holding means use simple, inexpensive clip structures that can be easily manufactured and replaced if needed. The design prioritizes functional simplicity over durability, using basic mechanical elements like springs and clips rather than complex, long-lasting mechanisms.
Data Source
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AI summary
In order to transport printed circuit boards (30) through a processing system (12), printed circuit boards (30) lying one behind another can be connected by means of holding clips (22) to form a type of chain. The outer ends of the holding clips (22) are suspended on two spaced-apart transport chains (16) which provide for transport and mounting. The holding clips are formed in two parts with a lower holding part (22) and an upper holding part (40), between which a printed circuit board (30) is mounted.