Cap Fitting Force Checking for Reliable Closure Assembly
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Solution Overview
Problem
Existing fitting-together systems for caps and bodies in closures do not provide a means to ensure that the cap is correctly fitted on the body.
Innovation Solution
A fitting-together system comprising a thumbwheel, lever arms, and force sensors that measure deformation when the thumbwheel rests on the second part, with a control unit to compare electrical values and ensure proper fitting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional fitting-together system with guide rails and carriages is used, then the fitting operation can be performed, but there is no means to check or ensure correct fitting of the cap on the body
Solution Approach 1:
The patent implements feedback by using force sensors to detect the actual fitting force between the cap and body, comparing this measured value with a predetermined acceptable range, and providing control signals to indicate whether the fitting is correct. This closed-loop feedback mechanism ensures reliable verification of fitting quality without requiring complex additional checking equipment.
Solution Approach 2:
The patent replaces complex mechanical checking mechanisms with a sensing and control system. Instead of using elaborate mechanical gauges or fixtures to verify fitting, the invention uses force sensors to electronically detect and evaluate the fitting force, substituting mechanical verification with an electronic sensing and control approach.
2Manufacturing precision
If force sensors are added to the fitting-together system to monitor deformation, then fitting correctness can be verified, but the device complexity increases
Solution Approach 1:
The patent introduces force sensors as intermediary elements between the fitting-together mechanism and the control system. These sensors act as mediators that convert mechanical fitting forces into electrical signals that can be processed and evaluated by the control unit, enabling precise measurement of fitting accuracy through an intermediate sensing layer.
Solution Approach 2:
The patent replaces complex mechanical measurement and verification mechanisms with electronic force sensors and control systems. Instead of using elaborate mechanical gauges, dial indicators, or fixture-based verification, the invention uses electronic sensing to detect and evaluate fitting forces, achieving high manufacturing precision through electronic rather than mechanical means.
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
Automatically monitors and ensures correct fitting of caps on bodies by detecting deviations through electrical signals, facilitating adjustments if necessary.
Implementation Method 1
at least one force sensor secured to an element of the fitting-together system and arranged to emit an electrical value proportional to the deformation suffered when said at least one thumbwheel rests on the second part
Data Source
AI summary
A fitting-together system for fitting together two parts and includes a thumbwheel having an axis of revolution and coming into abutment on the second part to fitted on the first part, two lever arms able to rotate about a rotation axis offset with respect to said axis of revolution, at least one force sensor secured to an element of the fitting-together system and arranged to emit an electrical value proportional to the deformation suffered when said thumbwheel rests on the second part, and a control unit connected to said at least one force sensor and arranged to compare the electrical value with a predefined interval of values.