Multi-Head Mounting Apparatus Collision Avoidance
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Solution Overview
Problem
Existing mounting apparatuses for electronic components face challenges in preventing collisions between mount heads, which can lead to damage and productivity losses due to high-speed operations and limited freedom in component placement on printed boards, especially when multiple heads are used to mount components on both sides of the board.
Innovation Solution
The apparatus features a conveying device with two component supply devices and two mount heads, where the movement of one head is prioritized to ensure the other head can safely enter the overlapped region without collision by adjusting the y-direction movement range based on the positions of the first head's operations, maximizing the moveable range and preventing collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If two mount heads are used to mount components on both sides of the printed board, then the component mounting rate is accelerated, but the risk of collision between mount heads increases
Solution Approach 1:
The system performs preliminary planning of mount head trajectories before actual mounting operations. The control unit calculates and determines the movement paths of both mount heads in advance, identifying potential collision risks and adjusting trajectories to avoid intersections. This preliminary action allows the system to maintain high productivity with two simultaneously operating mount heads while preventing collisions through pre-computed safe paths.
Solution Approach 2:
The system dynamically adjusts the movement ranges and speeds of mount heads based on real-time positions and operational status. When one mount head is performing mounting operations, the control unit dynamically restricts the movement range of the other mount head to prevent collision. This dynamic control enables flexible coordination between multiple heads, maintaining high productivity while ensuring safety through adaptive movement constraints.
2Productivity
If mount heads move at high speed to accelerate component mounting, then productivity is improved, but the damage from collision increases
Solution Approach 1:
The control unit applies preliminary anti-action by pre-calculating and preventing collision scenarios before they can occur. Through trajectory planning and movement range restriction, the system eliminates the possibility of high-speed collisions that would cause damage. This allows mount heads to maintain high operating speeds for productivity while the control system proactively counteracts any potential harmful collision effects.
3Productivity
If component supply devices are disposed at both sides of the printed board, then the mounting efficiency is improved, but the complexity of the apparatus increases
Solution Approach 1:
The control unit serves multiple functions: it controls both mount heads, plans trajectories for both, monitors positions of all components, and coordinates movements to prevent collisions. This centralized multi-functional control simplifies the overall apparatus structure compared to having separate control systems for each mount head and component supply device, while still achieving high mounting efficiency through coordinated operation of all components.
Data Source
AI summary
An electronic component is mounted on a printed board by a first head and a second head collaboratively. The first head is prioritized to the second head for moving operations. The range which allows the second head to move is defined in consideration with all the positions where the electronic components held by the first head are to be mounted on the printed board such that no collision occurs between the first head in operation and the second head.