Charging Apparatus for Bubble-Free Adhesive Bonding
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Solution Overview
Problem
Conventional bonding apparatuses face challenges in applying adhesives to large-sized plate-shaped members, leading to adhesive scattering, contamination, and air bubble intrusion, with labor-intensive removal of excess adhesive and inefficiencies in spreading adhesives uniformly.
Innovation Solution
A charging apparatus with holding members for plate-shaped members, an emission nozzle for precise adhesive application between them, and a nozzle movement unit to create a preset pattern, preventing air bubbles and ensuring uniform adhesive distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the plate-shaped member is rotated to apply adhesive over the entire surface, then small-sized members can be covered, but large-sized members cannot be effectively bonded and adhesive scatters to the outer rim
Solution Approach 1:
The adhesive application process is segmented into multiple sections along the length of the plate-shaped member. Multiple nozzles are positioned at different locations to apply adhesive to different sections simultaneously or sequentially, enabling effective bonding of large-sized members while maintaining precision by limiting each nozzle's travel distance.
Solution Approach 2:
The invention transitions from a single rotational dimension to a linear dimensional approach where the plate-shaped member moves linearly past stationary or moving nozzles. This dimensional change allows precise adhesive application along the entire surface of large-sized members without the limitations of rotational methods.
2Device complexity
If the nozzle remains fixed during adhesive coating, then the structure is simple, but adhesive accumulates at the outer rim and contaminates the end face
Solution Approach 1:
The nozzle system is made dynamic by enabling it to move along the plate-shaped member during adhesive application. This dynamic positioning allows the nozzle to maintain optimal distance and angle throughout the bonding surface, preventing adhesive from accumulating at the outer rim and contaminating end faces while keeping the overall system relatively simple.
3Area of stationary object
If rotation is used to spread adhesive, then coverage is achieved, but air bubbles may intrude into the adhesive during the process
Solution Approach 1:
The invention introduces a controlled liquid delivery system as an intermediary between the adhesive source and the bonding surface. This intermediary system carefully meters and places adhesive in a controlled manner, preventing air bubble intrusion while ensuring complete coverage of the bonding area, thereby maintaining bonding reliability.
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
Enables efficient adhesive application to both small and large-sized plate-shaped members, preventing air bubbles and ensuring uniform coverage, thus improving the bonding process and reducing labor-intensive cleanup.
Implementation Method 1
a syringe (15) connected to the emission nozzle (10) to emit an adhesive (7)
Data Source
AI summary
A charging apparatus that may be applied to a process of bonding a large-sized plate-shaped member as air bubbles is prevented from mixing. A charging apparatus includes a plurality of holding members (4, 5) for holding a pair of plate-shaped members (2, 3) in a state the major surface of the paired plate-shaped members (2, 3) will face each other, and a movement member (6) that causes the holding members (4, 5) to be moved towards and away from each other. The charging apparatus also includes an emission nozzle (10) adapted to be introduced between the plate-shaped members (2, 3), arranged facing each other, to emit a charging liquid (7) into the gap between the plate-shaped members (2, 3). The charging apparatus also includes a nozzle movement unit (11) for causing movement of the emission nozzle (10) in an in-plane direction of the plate-shaped members (2, 3). The charging apparatus also includes a reservoir (15) in which the charging liquid (7) is to be accumulated, and a thrust unit (13) that causes the charging liquid (7) accumulated in the reservoir (15) to be emitted via the emission nozzle (10). The charging liquid (7), emitted via the emission nozzle (10), is charged into the gap between the plate-shaped members as the liquid is contacted with the plate-shaped members (2, 3) carried in a relation of facing each other.