Feeder Position Optimization for SMD Mounting Head Collisions
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Solution Overview
Problem
In electronic component mounting machines, collisions occur between nozzle holding units and electronic components conveyed by other conveyance devices due to varying nozzle heights, necessitating optimized feeder installation positions to prevent such collisions and streamline the mounting process.
Innovation Solution
The installation position optimization program allocates feeders with specific nozzle heights to different component supply devices, ensuring that feeders with higher nozzle heights are positioned closer to one conveyance device and those with lower nozzle heights are positioned farther away, thereby preventing collisions and optimizing the mounting head's movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If feeders are installed on component supply devices to supply electronic components, then mounting operation can be performed efficiently, but collisions may occur between nozzle holding units and electronic components on other conveyance devices due to varying nozzle heights
Solution Approach 1:
The system performs preliminary analysis of nozzle heights for all required nozzle holding units before mounting operations begin. Based on this pre-acquired information, the controller strategically assigns feeders to component supply devices and determines optimal component supply sequences, ensuring that collisions are prevented before they can occur during the mounting process
Solution Approach 2:
The system dynamically adjusts the mounting process by selecting different component supply sequences based on the specific combination of nozzle holding units and their heights. The controller can change the supply sequence adaptively depending on which nozzle holding units are mounted and what electronic components need to be supplied, optimizing both safety and efficiency for each specific operation scenario
2Adaptability or versatility
If the mounting head moves across conveyance devices to access feeders, then all feeders can be utilized, but the mounting head may collide with electronic components on other conveyance devices
Solution Approach 1:
The controller pre-analyzes the nozzle heights of all required nozzle holding units before mounting operations begin. Based on this pre-acquired information, the system strategically assigns feeders to component supply devices and determines optimal component supply sequences, ensuring that the mounting head can access required feeders without moving across conveyance devices in a way that would cause collisions
Solution Approach 2:
The controller acts as an intermediary that coordinates between the mounting head, nozzle holding units, and component supply devices. It uses the pre-acquired nozzle height information to make intelligent decisions about component supply sequences and feeder assignments, mediating the interaction to prevent collisions while maintaining efficient mounting operations
3Device complexity
If feeder installation positions are fixed, then device complexity is reduced, but the mounting head must move longer distances to access all feeders
Solution Approach 1:
While feeder installation positions remain physically fixed, the system dynamically optimizes the mounting process by selecting different component supply sequences based on nozzle holding unit configurations. The controller adaptively determines the most efficient supply sequence for each specific scenario, effectively reducing the mounting head's movement distance and time without requiring physical reconfiguration of feeders
Solution Approach 2:
The system changes operational parameters (component supply sequences and feeder assignments) based on the specific combination of mounted nozzle holding units and their nozzle heights. By adjusting these software-controlled parameters rather than physical positions, the system optimizes mounting head movement efficiency while maintaining simple fixed feeder installation positions
Data Source
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AI summary
A mounting head is formed of a main body section and a plurality of nozzle holding units, and each of the plurality of nozzle holding units is mounted to the main body section in an exchangeable manner. The height of a suction nozzle when the mounting head is moving over a circuit board is different for each of the plurality of nozzle holding units. In a mounting machine using such a mounting head, due to an installation position optimization program being executed, an installation position of a tape feeder in which electronic components which are scheduled to be mounted to the circuit board which is conveyed by one of a pair of conveyance devices are stored is set to a tape feeder installation table of a supply device of a side close to the one conveyance device of the pair of supply devices.