Rotating Electroplating Bath Variable Gap Side Wall
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Solution Overview
Problem
Existing rotational surface treating devices face inefficiencies in discharging treatment liquids, particularly when dealing with small parts, as the narrow gaps required for plating liquids to be discharged take a long time, hindering treatment efficiency.
Innovation Solution
The device features a side wall with a gap that is smaller on the inner side contacted by the objects to be treated and larger on the outer side, formed by stacking hollow disks or wedge-shaped members, and optionally includes a porous member or recessed portions to enhance liquid discharge, allowing for increased centrifugal force-driven liquid discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the gap is made smaller to retain small parts, then the parts are retained in the treatment bath, but the discharge time of treatment liquid increases significantly
Solution Approach 1:
The gap width is made non-uniform along the radial direction, with the inner side having a smaller gap width for part retention and the outer side having a larger gap width for efficient liquid discharge. This local variation in gap quality resolves the contradiction between retaining small parts and discharging treatment liquid quickly.
Solution Approach 2:
The problem is solved by introducing a radial dimension variation to the gap width, transitioning from a uniform one-dimensional gap to a two-dimensional varying gap structure. This allows simultaneous optimization for both part retention (inner region) and liquid discharge (outer region).
2Productivity
If the gap is made larger to discharge liquid quickly, then the discharge rate increases, but small parts may be discharged along with the liquid
Solution Approach 1:
Different regions of the side wall are assigned different gap widths: the inner side has a smaller gap for part retention while the outer side has a larger gap for high-speed liquid discharge. This local differentiation enables simultaneous achievement of part retention and high productivity.
3Reliability
If a uniform small gap is used throughout the side wall, then parts are retained, but the treatment liquid discharge efficiency is low
Solution Approach 1:
The gap width is optimized locally at different radial positions: smaller gap at the inner side for reliable part retention, and larger gap at the outer side for efficient liquid discharge. This resolves the contradiction between retention reliability and discharge productivity.
Solution Approach 2:
By varying the gap width in the radial direction, the invention transforms a uniform one-dimensional gap structure into a two-dimensional variable gap structure, enabling simultaneous optimization of part retention and liquid discharge efficiency across different regions.
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 configuration significantly increases the discharge rate of the treatment liquid, improving treatment efficiency by ensuring only the liquid is discharged while keeping the objects within the treatment bath, thus speeding up the process.
Implementation Method 1
the treatment bath 2 is rotated, whereby the treatment bath 2 is also rotated... When the treatment bath 2 is rotated, the parts 20 are collectively pressed onto the side wall 6 by a centrifugal force... the treatment liquid 16 is discharged to the outside through the gap 8 by the centrifugal force
Data Source
AI summary
A rotational surface treating device with a high treatment efficiency that allows a treatment liquid to be discharged in a short time is provided. When a treatment bath 2 is rotated, parts 20 contact an electrode 50 to be electroplated. In this event, a plating liquid 16 is used as circulated by a pump P. The plating liquid 16 is discharged to the outside through a gap in a side wall 80 for replacement of the plating liquid 16 or the like. During discharge, the plating liquid 16 is not circulated by the pump P. The gap 8 which is formed in the side wall 80 is formed to be smaller than the minimum dimension of the parts 20 on the inner side. The gap 8 is formed to be wider toward the outer side. Thus, water is discharged immediately.