PCB Equipping Buffer Zone for Short Boards
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Solution Overview
Problem
Conventional equipping machines face increased changeover times and reduced production capacity when handling printed circuit boards of lengths less than half the maximum length, due to lengthy transport paths and high investment costs associated with implementing complex sensor systems for managing differing board lengths.
Innovation Solution
A method that involves transporting and buffering printed circuit boards of shorter lengths within an equipping machine, allowing for simultaneous processing and minimizing changeover time by positioning a second board next to the equipping post, thereby reducing the distance it needs to travel, and using a buffer region to manage multiple boards without the need for elaborate sensor systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If printed circuit boards of first length (less than half of maximum length) are transported from input section to equipping post on conventional equipping machines, then the boards can be equipped, but the changeover time increases significantly due to the long transport path
Solution Approach 1:
The method transports a second printed circuit board into the buffer region in advance, before the first board completes its equipping cycle. This preliminary positioning of the second board in the buffer region allows it to be quickly transferred to the equipping post after the first board is removed, significantly reducing the changeover time and improving production capacity
Solution Approach 2:
A buffer region is introduced as an intermediary zone between the input section and the equipping post. This buffer region temporarily holds the second printed circuit board, acting as a mediator that decouples the transport cycle from the equipping cycle, thereby eliminating the need for the equipping post to remain idle during board changes
2Loss of time
If a transport system with storage means is implemented to handle shorter boards, then changeover time can be reduced, but large investment costs are required
Solution Approach 1:
The buffer region is designed to serve multiple functions: it acts as a temporary storage zone for shorter printed circuit boards, a transfer station for quick board changes, and a positioning area for aligning boards. This multi-functionality eliminates the need for separate dedicated storage systems, reducing investment costs while still achieving reduced changeover times
Solution Approach 2:
The method changes the operational parameters of the existing equipping machine by introducing a buffer region and modifying the transport sequence. Instead of requiring a complete new transport system with complex storage means, the solution adjusts how the existing machine operates - transporting boards into a buffer zone first, then transferring them to the equipping post, thereby reducing changeover time with minimal investment
3Adaptability or versatility
If the equipping machine is designed for maximum length boards, then it can handle the largest boards, but shorter boards experience inefficient utilization of the transport path
Solution Approach 1:
The transport path is segmented into distinct functional zones: the input section, the buffer region, and the equipping post. By dividing the continuous transport path into segments, the system can optimize the position and function of each zone based on the specific board length being processed, allowing efficient handling of both long and short boards while maintaining high production capacity
Data Source
AI summary
A method for equipping printed circuit boards on an equipping machine, the printed circuit boards being of a first length, and the equipping machine being realized to equip printed circuit boards of a second length, the second length being more than twice as great as the first length. The equipping machine has an input section (1) and an equipping section (2), the equipping section (2) being disposed after the input section (1) in a direction of conveyance (F) of the printed circuit boards, disposed after the input section (1) in a direction of conveyance of the printed circuit boards, the printed circuit boards of the first length and the printed circuit boards of the second length being transportable, in their longitudinal direction, from the input section (1) into the equipping station (2).