Robot Weather Strip Assembly With Vision-Guided Flange Fitting

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Solution Overview

Problem

Conventional manual installation of weather strips on vehicle bodies is time-consuming, inefficient, and prone to uneven quality, leading to musculoskeletal disorders and fatigue among workers.

Innovation Solution

An apparatus comprising a weather strip mounting gripper and a robot, equipped with a vision system, a guide part, and an assembly part, which automates the fitting and quality inspection of weather strips to a vehicle's chassis flange, using a 2D camera and laser vision sensor for precise alignment and a pressure roller for secure attachment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual installation of weather strips is used, then workers can perform the installation, but the work time is long and productivity is low

Engineering Contradiction:
Improveinstallation speedVSAvoidwork time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent replaces the manual mechanical installation process with an automated robot system equipped with a specialized gripper. The robot automatically grasps the weather strip, positions it along the chassis flange, and presses it into place, eliminating manual labor and significantly increasing installation speed while reducing work time.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The weather strip installation system is designed to be self-sufficient through the integrated robot-gripper-vision system. The apparatus autonomously performs detection, positioning, grasping, and installation without requiring human intervention during the process, thereby maximizing productivity and minimizing work time.

Inventive Principle:
Principle #25Self-service

2Manufacturing precision

If manual installation of weather strips is used, then workers can perform the installation, but the work quality is uneven

Engineering Contradiction:
Improveinstallation qualityVSAvoidoperation consistency
Core Design Contradiction:
Manufacturing precisionVSEase of operation

Solution Approach 1:

The patent replaces manual installation operations with an automated robot system that executes precise, repeatable motions. The robot-controlled gripper applies consistent pressing force and maintains uniform positioning along the chassis flange, eliminating the variability and inconsistency inherent in manual installation processes.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The vision system continuously monitors the installation process, detecting the position of the weather strip and the chassis flange geometry in real-time. This feedback information is used by the control system to adjust the gripper's positioning and pressing force dynamically, ensuring consistent high-quality installation throughout the entire process.

Inventive Principle:
Principle #23Feedback

3Ease of manufacture

If manual installation of weather strips is used, then workers can perform the installation, but workers experience musculoskeletal disorders and fatigue

Engineering Contradiction:
Improveworker healthVSAvoidautomation level
Core Design Contradiction:
Ease of manufactureVSExtent of automation

Solution Approach 1:

The patent replaces manual labor with an automated robot system that performs all installation operations. The robot assumes the physically demanding tasks of grasping, positioning, and pressing the weather strip, completely eliminating exposure to musculoskeletal disorders and fatigue while achieving high-level automation.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The installation system is fully automated and self-executing, requiring no human physical involvement during the installation process. The robot-gripper-vision system operates autonomously to complete the entire installation sequence, thereby protecting worker health while maximizing automation extent.

Inventive Principle:
Principle #25Self-service

4Productivity

If a robot system is used for automatic assembly, then productivity is improved, but the device complexity increases

Engineering Contradiction:
Improveinstallation efficiencyVSAvoidsystem complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent integrates the robot, specialized gripper, and vision system into a unified automated installation apparatus. By merging these components into a coordinated system, the patent achieves high productivity through automation while managing complexity through functional integration rather than separate independent systems.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The robot system is designed with multi-functional capabilities, serving as the central platform for detection, positioning, grasping, and installation operations. This universal approach consolidates multiple functions into a single integrated system, improving productivity while controlling overall device complexity through functional consolidation.

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

Data Source

PatentUS12466247B2Apparatus and method for automatic assembly of weather strip
Publication Date: 2025.11.11 HYUNDAI MOTOR CO LTD
  • US12466247B2 patent drawing
  • US12466247B2 patent drawing
  • US12466247B2 patent drawing

AI summary

Proposed are an apparatus and a method for automatic assembly of a weather strip, wherein both the work of fitting a weather strip (20) to a chassis flange (10) constituting a vehicle body and the work of quality inspection for inspecting the fitted state of the weather strip (20) are automated, thereby contributing to work efficiency improvement and quality enhancement.