Sealing Profile Application with Integrated Optical Inspection
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Solution Overview
Problem
Existing methods for applying sealing profiles to vehicle bodies require close coordination between manufacturers and users for defect detection and marking, leading to inefficiencies and potential misapplication due to the need for pre-marking and data handling.
Innovation Solution
An automatic optical inspection system within the application apparatus detects defects and discontinuities using image processing, allowing for direct detection and severing of defective portions without pre-marking or data handling, enabling independent operation by the user and integrating adhesive application within the apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If defect detection and marking are performed by the manufacturer before winding the sealing profile onto the roll, then defects can be identified, but close coordination and data handling between manufacturer and user are required, increasing system complexity
Solution Approach 1:
The application apparatus performs its own defect detection using an integrated optical inspection system, eliminating the need for the manufacturer to pre-mark defects. The system inspects the sealing profile in real-time during application and autonomously identifies defects without requiring external coordination or data exchange between manufacturer and user.
Solution Approach 2:
The defect detection function is extracted from the manufacturer's production line and relocated to the user's application apparatus. This transfers the inspection capability to where it is most needed, allowing the application apparatus to independently identify and handle defective portions without relying on pre-marking by the manufacturer.
2Measurement precision
If pre-marking of defects is performed on the sealing profile, then defective portions can be identified, but additional marking equipment and data handling processes are required, increasing device complexity
Solution Approach 1:
The mechanical marking system (ink-jet printers, physical tags) is replaced with an optical detection system. The application apparatus uses cameras and image processing to visually identify and locate defects on the sealing profile in real-time, eliminating the need for physical marking equipment and associated data handling infrastructure.
3Reliability
If the sealing profile is continuously inspected by the manufacturer before winding, then defect detection capability is improved, but production time and costs increase
Solution Approach 1:
The inspection action is performed preliminarily but differently - instead of inspecting every sealing profile before winding, the system performs rapid optical inspection only when a defect is suspected or at critical points during application. This preliminary check approach maintains quality assurance while minimizing production interruptions and time losses.
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 solution eliminates the need for pre-checking and marking of sealing profiles, reduces production costs, and ensures reliable application of non-defective sealing profiles along the application line, enhancing user independence from manufacturers and improving application accuracy.
Implementation Method 1
The optical inspection system uses image processing to detect not just defects of the sealing profile, but also the discontinuities
Implementation Method 2
the sealing profile is drawn off from an unwinding unit and rolled, by way of an adhesive-bonding layer arranged on the sealing profile, on the vehicle body
Data Source
AI summary
A method for fitting sealing profiles on vehicle bodies or the parts thereof includes withdrawing the sealing profile from an unwinding unit and, by way of an adhesive layer arranged on the sealing profile, rolling of the application device the sealing profile on the vehicle body or the part of the vehicle body, along an application line provided for fitting purposes, by a pressure-exerting roller of an application head. Defects and discontinuities in the sealing profile are detected immediately by the arrangement of an automatic optical inspection system within the application device, on the user side, i.e., in particular without there being any need for markings on the wound-up sealing profile or for data handling between the manufacturer of the sealing profile and the user.