Component Grasping Control Using Failed-Pick Position Exclusion

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Solution Overview

Problem

Existing component mounting systems face challenges in properly supplying components scattered on a stage, as holding tools often fail to grasp components due to positional errors or design mismatches, leading to inefficiencies and wasted time.

Innovation Solution

A component mounting system that includes a stage for scattering components, a holding tool that moves to hold components, a storage device to record positional information of failed holdings, and a control device that excludes components within stored failure regions from being targeted, ensuring accurate and efficient component supply by preventing repeated attempts at holding difficult-to-grasp components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the holding tool continuously attempts to hold components scattered on the stage, then the component supply process is maintained, but time is wasted due to repeated failures to hold components that are difficult to grasp

Engineering Contradiction:

Improvecomponent supply efficiencyVSAvoidtime wasted in repeated holding attempts

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The system performs preliminary identification of components that are difficult to hold by storing positional information of failed holding attempts. Before the holding tool attempts to grasp a component, the control device checks whether the component's position is recorded in the storage device, allowing prevention of futile attempts in advance

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system uses feedback from previous holding failures to improve future performance. The storage device records positional information of components that failed to be held, and the control device uses this feedback information to exclude these positions from future holding targets, thereby avoiding repeated failures

Inventive Principle:

Principle #23Feedback

2Quantity of substance

If the holding tool attempts to hold all components on the stage, then complete component collection is achieved, but unnecessary attempts are made on components that cannot be held

Engineering Contradiction:

Improvecomponent collection completenessVSAvoidholding operation efficiency

Core Design Contradiction:

Quantity of substanceVSProductivity

Solution Approach 1:

The system extracts and removes from the pool of potential holding targets the components that are known to be difficult to hold. By storing positional information of failed attempts and using this information to exclude specific components from future attempts, the system separates viable holding targets from non-viable ones

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The system changes the selection criteria for holding targets by introducing a filter based on positional information from previous failures. The control device modifies the holding operation parameters by excluding components at positions recorded in the storage device, thereby changing which components are attempted to be held

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS11490553B2Component mounting system and component grasping method

Publication Date: 2022.11.01 FUJI CORP

AI summary

A component mounting system comprising: a stage configured to scatter components; a holding tool configured to move over the stage and hold components from the stage; a storage device configured to store positional information of components on the stage that the holding tool failed to hold; and a control device configured to control the operation of the holding tool so that components are held while excluding components in the positional information stored in the storage device from becoming holding targets.