Integrated Suction-Gripper End Effector for Precise Part Handling

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Solution Overview

Problem

Existing robots lack the capability to simultaneously perform tasks that require both suction and grasping actions on a target object, as their grasping portions cannot hold objects independently.

Innovation Solution

A holding device with a first suction structure and a first grasping structure arranged adjacent to each other in a direction intersecting with a first direction, allowing simultaneous suction and grasping of a main member and an auxiliary member, which can be moved and positioned by robot arms to perform actions on the target object.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a robot uses separate suction and grasping portions for different tasks, then each portion can perform its specialized function, but the robot cannot perform combined suction and grasping actions on the same target object

Engineering Contradiction:
Improvecapability to perform combined suction and grasping actionsVSAvoidstructure having both suction and grasping functions
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines the suction structure and grasping structure into a single integrated holding device. The suction structure includes suction ports for holding the main member, while the grasping structure includes holding ports for holding auxiliary members. Both structures are arranged adjacent to each other and can be controlled simultaneously by the robot arm, enabling the robot to perform both suction and grasping actions on the same target object without requiring separate devices.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The holding device is designed with multi-functionality to perform both suction-based holding and grasping-based holding. The suction structure can hold the main member through suction force, while the grasping structure can hold auxiliary members through mechanical grasping. This universal design allows the same holding device to adapt to different task requirements by activating either suction or grasping or both simultaneously.

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

2Reliability

If the grasping portion alone is used to hold objects, then the structure can be simple, but it cannot securely hold objects that require suction-based holding

Engineering Contradiction:
Improvesecure holding capabilityVSAvoidstructure with both suction and grasping components
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The suction structure and grasping structure are merged into a single integrated system that can be controlled together. The suction structure provides reliable holding for the main member through suction force, while the grasping structure provides reliable holding for auxiliary members through mechanical grasping. By combining both structures, the system achieves high reliability for holding different types of objects that require different holding mechanisms.

Inventive Principle:
Principle #5Merging (Combining)

3Adaptability or versatility

If multiple separate structures are used for different holding tasks, then each structure can be optimized for its specific function, but the overall system becomes more complex and harder to control

Engineering Contradiction:
Improvefunctionality for different holding tasksVSAvoidcontrol coordination
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The suction structure and grasping structure are merged into a single holding device that is controlled by a single robot arm. This integration allows the controller to coordinate both suction and grasping actions simultaneously through a unified control system, simplifying the operation compared to controlling multiple separate structures. The adjacent arrangement of the two structures also facilitates coordinated movement and positioning.

Inventive Principle:
Principle #5Merging (Combining)

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

The holding device enables secure holding and application of actions to a target object by suction and grasping, improving positioning accuracy and ensuring the auxiliary members are placed without dropping, even when changing postures and directions.

Implementation Method 1

a first suction structure that sucks a main member

Methodology Applied
Scientific EffectSuction: Suction

Implementation Method 2

a first grasping structure that is arranged adjacent to the first suction structure in a direction intersecting with a first direction and grasps a first auxiliary member

Methodology Applied
Scientific EffectMechanical Force: Mechanical Force

Data Source

PatentUS12508722B2Holding device, control method, control device, and robot system
Publication Date: 2025.12.30 KAWASAKI JUKOGYO KK
  • US12508722B2 patent drawing
  • US12508722B2 patent drawing
  • US12508722B2 patent drawing

AI summary

A holding device includes: a first suction structure that sucks a main member; and a first grasping structure that is arranged adjacent to the first suction structure in a direction intersecting with a first direction and grasps a first auxiliary member. The first suction structure is directed so as to suck the main member located in the first direction, and the first grasping structure is directed so as to grasp the first auxiliary member located in the first direction.