Workpiece Positioning on Sticky Gasket Using Release Agent

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Solution Overview

Problem

Sticky gaskets pose challenges in the accurate positioning of workpieces due to their adhesive nature, making it difficult to reposition them without damaging the alignment, especially in environments with multiple static base elements and fastener holes.

Innovation Solution

A method involving a release agent is applied to the sticky surface of the gasket, allowing temporary non-stickiness, enabling precise alignment and repositioning of workpieces with respect to a static base, using a polyurethane gasket tape and an alcohol-based release agent, facilitating the alignment of fastener holes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a sticky gasket is applied to a static base, then the workpiece can be held in position, but it becomes difficult to reposition or re-align the workpiece if initial placement is incorrect

Engineering Contradiction:
Improveworkpiece positioning accuracyVSAvoidworkpiece repositioning ability
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent applies a release agent to the sticky gasket surface before placing the workpiece. This preliminary action temporarily neutralizes the adhesive properties, allowing the workpiece to be positioned and repositioned freely during alignment. Once alignment is achieved, the release agent evaporates or is removed, restoring the gasket's sticky properties to secure the workpiece in place.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The release agent acts as an intermediary substance between the sticky gasket and the workpiece. It temporarily modifies the interaction between these two components, preventing adhesion during the positioning phase. This intermediary allows for easy adjustment and repositioning, and after completion of alignment, the intermediary is removed (through evaporation or wiping), allowing the gasket to perform its intended function.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Manufacturing precision

If a workpiece is placed on a sticky gasket for accurate alignment, then positioning stability is achieved, but any misalignment cannot be corrected without damaging the workpiece or gasket

Engineering Contradiction:
Improvefastener hole alignmentVSAvoidalignment correction capability
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The release agent is applied in advance to the gasket surface before the workpiece is positioned. This creates a temporary non-sticky condition that allows multiple positioning attempts and corrections. The workpiece can be repeatedly placed, adjusted, and repositioned until precise alignment of fastener holes is achieved, without fear of adhesion or damage.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent temporarily changes the adhesive parameter of the gasket by applying the release agent. This parameter change transforms the gasket from a high-adhesion state to a low-adhesion state during the alignment process. After alignment is complete, the parameter reverts to its original high-adhesion state, securing the precisely aligned workpiece.

Inventive Principle:
Principle #35Parameter changes

3Measurement precision

If skill is developed through practice to achieve proper alignment on first placement, then repositioning becomes unnecessary, but this requires extensive training and experience

Engineering Contradiction:
Improvealignment accuracyVSAvoidtraining time and experience requirement
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The release agent serves as a mediator that eliminates the need for skilled judgment in positioning. Instead of relying on trained operators to place the workpiece correctly on the first attempt, the release agent creates a forgiving environment where any placement can be easily corrected. This democratizes the alignment process, making it accessible to unskilled workers without extensive training.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The system provides self-correcting capability through the release agent. Rather than requiring operator skill to achieve proper alignment, the process itself becomes self-serviceable - misaligned workpieces can be easily removed and repositioned by anyone, without needing specialized knowledge or experience. The release agent automatically enables correction capability.

Inventive Principle:
Principle #25Self-service

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 method allows for accurate and easy repositioning of workpieces on sticky gaskets, ensuring proper alignment and reducing misalignment issues, even for unskilled workers, by temporarily rendering the gasket surface non-sticky, allowing sufficient time for alignment and fastener insertion.

Implementation Method 1

spraying the top surface of the gasket with the release agent; manually laying the workpiece on the wetted top surface of the gasket; allowing the release agent to dry

Methodology Applied
Scientific EffectEvaporation: Evaporation

Data Source

PatentUS8691033B1Positioning a workpiece on a sticky gasket
Publication Date: 2014.04.08 PATENT WELL LLC
  • US8691033B1 patent drawing
  • US8691033B1 patent drawing
  • US8691033B1 patent drawing

AI summary

Applicants provide a step in the assembly of a moveable workpiece to a static base, the base bearing a sticky gasket and in which a release agent is sprayed on the sticky upper surface of the sticky gasket, which release agent will render the sticky surface temporarily unsticky.