Robotic End Effector Magnetic Coupling for Diverse Item Handling

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Robotic manipulators face challenges in efficiently manipulating items with diverse properties, such as different dimensions, shapes, and surface properties, as conventional mechanical and vacuum end effectors often fail to grasp these items effectively, leading to reduced eligibility and reliability in material handling systems.

Innovation Solution

The implementation of magnetic coupling using magnetic patches applied to items, allowing robotic arms with magnetized end effectors to securely manipulate items by magnetically coupling with these patches, either alone or in combination with other manipulation approaches.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional mechanical and vacuum end effectors are used, then the system is simple and easy to operate, but the eligibility and reliability of item manipulation deteriorates when items have diverse properties

Engineering Contradiction:
Improveeligibility and reliability of item manipulationVSAvoidcomplexity of end effector system
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The end effector is designed with multiple manipulation capabilities including magnetic coupling, mechanical pinching, and vacuum suction. This multi-functional design allows a single end effector to handle diverse items with different properties (ferrous, non-ferrous, rough surfaces, small sizes) that would otherwise require multiple specialized grippers, thereby improving eligibility and reliability while managing system complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The end effector employs dynamic selection of manipulation modes based on real-time detection of item properties. The system can switch between magnetic coupling, mechanical pinching, and vacuum suction depending on the detected characteristics of the item, enabling adaptive manipulation that maintains high reliability across diverse item types without requiring a static, overly complex multi-gripper system.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If specialized end effectors are used for specific item classes, then manipulation reliability improves for those items, but the system loses versatility when different objects are encountered

Engineering Contradiction:
Improveversatility in handling diverse itemsVSAvoidmanipulation reliability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The end effector integrates multiple manipulation mechanisms (magnetic, mechanical, vacuum) into a single universal device that can adapt to different item classes. This allows the system to maintain versatility across diverse items while preserving manipulation reliability through appropriate mode selection based on item detection.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system incorporates sensors to detect item properties such as material composition, surface texture, and size. This feedback information is used to automatically select the appropriate manipulation mode (magnetic coupling for ferrous items, vacuum suction for smooth surfaces, mechanical pinching for irregular shapes), ensuring both versatility and reliability in handling diverse objects.

Inventive Principle:
Principle #23Feedback

3Reliability

If magnetic coupling is implemented, then eligibility and reliability of manipulation improves, but the device complexity increases due to additional magnetic components

Engineering Contradiction:
Improvemanipulation reliabilityVSAvoidcomplexity of end effector structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The magnetic coupling mechanism is integrated as one of multiple manipulation capabilities within a single end effector design. Rather than adding a separate magnetic gripper system, the magnetic components are incorporated into the existing end effector structure, allowing it to function as both a magnetic and mechanical/vacuum manipulator, thereby improving reliability without proportionally increasing overall device complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This method significantly enhances the eligibility and reliability of item manipulation by enabling robotic arms to handle a wider range of items, including those with rough or non-uniform surfaces, by utilizing magnetic patches that allow for secure magnetic coupling, thereby improving the efficiency of material handling processes.

Implementation Method 1

magnetic coupling using magnetic patches applied to items, allowing robotic arms with magnetized end effectors to securely manipulate items by magnetically coupling with these patches

Methodology Applied
Scientific EffectMagnetic coupling: Magnetism

Data Source

PatentUS10471599B1Robotic item manipulation using magnetic coupling
Publication Date: 2019.11.12 AMAZON TECH INC
  • US10471599B1 patent drawing
  • US10471599B1 patent drawing
  • US10471599B1 patent drawing

AI summary

Systems and methods for determining item manipulation strategies using magnetic manipulation are described herein. For example, item information describing properties of an item may be accessed. The item information may indicate that the item includes a magnetic patch. Using this item information, a manipulation strategy for manipulating the item may be determined. The manipulation strategy may include a strategy for manipulating the item using one or more end effectors of a robotic manipulator. The manipulation strategy may be provided to the robotic manipulator for manipulation of the item by magnetically coupling an end effector of the one or more end effectors with the magnetic patch connected to the item.