Adhesive Application Device with Viscosity-Based Correction
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Solution Overview
Problem
Existing adhesive application methods struggle to maintain a high degree of accuracy in application quantity, particularly for ultramicro applications like the co-located actuator type, due to changes in adhesive viscosity over time and variations in production processes.
Innovation Solution
An application method and device that apply adhesive to a non-specified part, calculate the application quantity, make corrections to the application condition based on past corrections and intervals, and then apply the adhesive to the specified part with the corrected conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If adhesive application pressure is set according to usage elapsed time, then application quantity can be managed, but it becomes difficult to meet high accuracy requirements due to viscosity changes and production variations
Solution Approach 1:
The system performs preliminary measurement of adhesive viscosity before application and pre-calculates the correction coefficient. This advance preparation allows the system to account for viscosity variations before they affect application quantity, enabling high-precision control despite changes in adhesive properties over time or between production lots.
Solution Approach 2:
The system implements a feedback mechanism where the actual adhesive viscosity is measured, compared against target values, and used to dynamically adjust the application pressure through correction coefficients. This closed-loop control continuously compensates for viscosity variations, maintaining consistent application quantity across different production conditions and time periods.
2Productivity
If simple fixed coefficient correction is applied, then correction can be made quickly, but accurate correction of actual application quantity cannot be achieved
Solution Approach 1:
The system dynamically changes the correction coefficient based on measured adhesive viscosity parameters. Instead of using a fixed coefficient, the system calculates correction values based on actual viscosity measurements, enabling accurate adaptation to different adhesive batches and conditions while maintaining quick correction response through automated calculations.
3Measurement precision
If repeated correction is performed to achieve accurate application quantity, then precision can be improved, but takt time deteriorates
Solution Approach 1:
The system performs viscosity measurement and correction coefficient calculation before the actual adhesive application. This preliminary action ensures that the correct correction parameters are ready in advance, allowing single-pass accurate application without the need for repeated corrections and waiting time, thereby maintaining fast takt time while achieving high precision.
Solution Approach 2:
The system replaces manual iterative correction processes with automated viscosity measurement and calculation systems. This substitution enables rapid, accurate determination of correction coefficients through electronic measurement and computation, eliminating the time-consuming nature of manual repeated adjustments while maintaining or improving application accuracy.
Data Source
AI summary
An application method for applying an adhesive to an object includes applying, prior to applying the adhesive to a specified part of the object, the adhesive to a part different from the specified part, calculating an application quantity of the adhesive applied to the part different from the specified part, making a first correction configured to correct an application condition of the adhesive based on basis of a result of the calculation, and applying the adhesive to the specified part using the application condition corrected in the first correction.