Component Mounting Device Tape Switching Accuracy
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Solution Overview
Problem
When switching from a first carrier tape to a second carrier tape in component mounting devices, individual differences can cause positional shifts, leading to reduced pickup accuracy and increased cycle time due to the need for image processing to correct these shifts.
Innovation Solution
Incorporating a detection sensor to trigger imaging and positional correction before picking up the first component from the second carrier tape, ensuring accurate center positioning, and optionally performing intermediate imaging to account for variations in component load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If image processing is performed every time before pickup to correct positional shifts, then pickup accuracy is improved, but cycle time increases and component mounting efficiency decreases
Solution Approach 1:
The patent performs image processing only at the transition point when switching from the first carrier tape to the second carrier tape, rather than before every pickup. This preliminary action at the critical transition moment corrects positional shifts caused by individual differences between tapes, while avoiding the time penalty of continuous image processing throughout operation.
Solution Approach 2:
The patent applies image processing selectively only to the first component after tape switching, rather than uniformly to all components. This localized application addresses the specific problem area (transition between tapes) without incurring the continuous time cost, thereby maintaining both accuracy and efficiency.
2Reliability
If continuous feeding of multiple carrier tapes is implemented to maintain supply, then component supply continuity is improved, but positional shifting between tapes reduces pickup accuracy
Solution Approach 1:
The patent uses image processing to detect actual component positions after tape switching and feeds this information back to correct pickup positioning. This feedback mechanism compensates for individual differences between carrier tapes, maintaining both continuous supply and accurate pickup by adapting to each tape's specific characteristics.
Solution Approach 2:
The patent adjusts pickup position parameters based on image processing results obtained at tape transition. By changing the positioning parameters dynamically according to detected positional shifts, the system maintains accurate pickup across different tapes while preserving continuous supply capability.
Data Source
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AI summary
A component mounting device which improves pickup accuracy of a component without delaying cycle time. Provided is a feeder 21 which is detachably mounted to a base 41 and is capable of continuously feeding a first carrier tape and a second carrier tape to a component supply position 21a without splicing, a moving body 45 capable of moving in an XY plane in relation to the base, a component mounting head 48 which is supported by the moving body and holds a suction nozzle which picks up a component which is supplied to the component supply position, an imaging device 46 which is supported by the moving body and images the component which is supplied to the component supply position, identification means (step S110) for imaging a component which is a first component after switching from the first carrier tape to the second carrier tape using the imaging device and identifying a center position of the component before picking up the component, and correction control means (step S112) for subjecting the moving body to positional correction based on the identification carried out by the identification means such that the suction nozzle picks up the component at the center of the component.