Strip Application Device Stress Control Unit

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Solution Overview

Problem

Existing methods for applying strip materials to substrates often result in wrinkles and loosening over time due to stress issues, particularly compressive and tensile stress, which deteriorate the usability and reliability of the applied strips.

Innovation Solution

A device and method that control the stress level of the strip before application using drive means and a stress control unit with sensors to adjust the strip's tension or compression, ensuring secure adhesion and preventing wrinkles, featuring adjustable pin rollers and belt drive systems for precise strip advancement and application.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the strip is advanced through the applicator head without stress control, then the application process is simple, but wrinkles and loosening occur over time

Engineering Contradiction:
Improvestrip adhesion reliabilityVSAvoidstress control system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The stress control unit adjusts the stress level of the strip in advance before application to the substrate. By controlling the stress state of the strip material prior to bonding, the system prevents wrinkles and loosening from occurring during or after application, thereby improving long-term adhesion reliability without requiring complex post-application corrections

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The stress control unit continuously monitors and adjusts the stress level of the strip during advancement through the applicator head. This feedback mechanism ensures optimal stress control is maintained throughout the application process, preventing defects while keeping the system manageable through automated control

Inventive Principle:
Principle #23Feedback

2Strength

If the strip is applied under high stress to prevent loosening, then adhesion strength improves, but wrinkles and deformation occur

Engineering Contradiction:
Improvestrip adhesion strengthVSAvoidstrip surface smoothness
Core Design Contradiction:
StrengthVSShape

Solution Approach 1:

The stress control unit dynamically adjusts the stress parameter of the strip to an optimal level that provides sufficient adhesion strength without causing excessive stress that would lead to wrinkles or deformation. By precisely controlling the stress parameter within an optimal range, the system achieves strong bonding while maintaining strip surface smoothness

Inventive Principle:
Principle #35Parameter changes

3Manufacturing precision

If manual application methods are used, then equipment complexity is low, but application quality and consistency deteriorate

Engineering Contradiction:
Improveapplication quality consistencyVSAvoidapplication device complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The applicator head incorporates an integrated stress control unit that automatically monitors and adjusts strip stress levels during application. This self-regulating system eliminates the need for manual stress adjustment by operators, ensuring consistent application quality while keeping the device complexity manageable through automated self-control mechanisms

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS8475611B2Method and device for application of a strip material
Publication Date: 2013.07.02 3M INNOVATIVE PROPERTIES CO
  • US8475611B2 patent drawing
  • US8475611B2 patent drawing
  • US8475611B2 patent drawing

AI summary

The present invention relates to a method and a device for the application of a strip material to a substrate. Particularly, the present invention relates to a automatic application of an elongate strip of elastic material to a substrate. The present invention further relates to a device and a method for applying a seal strip such as a weatherstrip seal to a substrate. The elongate strip is advanced by drive means and positioned on a substrate by means of an application unit. The stress of the elongate strip is controlled by a stress control unit which is positioned in the area between the drive means and the application unit.