Robot Arm Gripper Stacking Packages with Precise Placement

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Solution Overview

Problem

Existing methods for automatic stacking of packing pieces with different specifications are inefficient due to high complexity, instability of stacks, and challenges in optimizing unloading sequences.

Innovation Solution

A method and device that combine the unloading of loading aids with the placement of packing pieces on the stack, using a gripper on a robot arm to handle packing pieces once and place them at precalculated positions, optimizing movement sequences and ensuring stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If packing pieces are stacked manually to achieve stability and optimize unloading sequences, then stack stability and unloading sequence optimization are improved, but productivity is reduced due to manual intervention

Engineering Contradiction:

Improvestack stabilityVSAvoidstacking speed

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The system changes the parameters of automatic stacking by using a robot arm with gripper to dynamically adjust placement positions, orientations, and stacking sequences based on real-time analysis of packing piece characteristics, thereby achieving both high productivity and stack stability that manual stacking provides

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent replaces manual mechanical stacking operations with an automated robot arm system equipped with a gripper, controlled by a computer program that calculates optimal stacking sequences and positions, eliminating manual intervention while maintaining stack stability through precise automated control

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If multiple separate operations are used for unloading loading aids and placing packing pieces, then ease of operation is improved, but loss of time increases due to multiple movement steps

Engineering Contradiction:

Improveoperational simplicityVSAvoidmovement time

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The patent merges the unloading of loading aids with the placement of packing pieces into a single integrated operation performed by the robot arm with gripper, which removes packing pieces from loading aids and places them on the stack in one continuous motion, eliminating intermediate movement steps and reducing total operation time

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20250162824A1Method and device for automatically stacking packages on a support in multiple layers

Publication Date: 2025.05.22 DEMATIC GMBH

AI summary

A device and method for automatically stacking packages with different dimensions on a support in a specified spatial arrangement includes determining the order and spatial position of packages with different dimensions in the stack to be formed on the support, arranging the packages on loading aids in the necessary order using a conveyor system, and transporting the packages from the conveyor system to the spatial positions which are calculated in advance on the support or on the stack being formed on the support by a handling means of a stacking device for forming the stack, where the handling means of the stacking device are designed to lift each package from the loading aid such that a gripper arranged on a robot arm grips and deposits at least one package at the calculated spatial position on the support or on the stack being formed on the support in one movement.