Cathode Conductive Roller for Sheet Plating

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Solution Overview

Problem

Existing sheet-type horizontal plating and electrolytic cleaning machines face inefficiencies due to frequent cleaning needs of conductive rollers, which affect the plating process and the roughness of the rollers, leading to reduced productivity and potential metal deposition on the rollers.

Innovation Solution

A novel conductive roller and anode plate device design where the cathode conductive roller is not required to be soaked in the plating solution or electrolyte, allowing for uniform current distribution and preventing metal ion deposition, with a conductive plate below to manage metal ions, and circular filtration of plating solution or electrolyte in soaking tanks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-generated harmful factors

If the conductive roller is arranged outside the soaking area and not soaked in plating solution, then the roller avoids metal deposition and maintains smooth surface, but the plating solution cannot be effectively sprayed to the roller through gaps

Engineering Contradiction:
Improvemetal deposition on conductive rollerVSAvoidroller arrangement structure
Core Design Contradiction:
Object-generated harmful factorsVSDevice complexity

Solution Approach 1:

The patent inverts the traditional arrangement by placing the conductive roller inside the soaking area rather than outside. This inversion allows the roller to be directly soaked in plating solution, ensuring effective metal ion deposition while maintaining a simple structural arrangement without requiring complex spray gap configurations

Inventive Principle:
Principle #13The other way round (Inversion)

2Manufacturing precision

If the conductive roller is directly soaked in plating solution, then metal ions can be effectively deposited on the roller surface, but the roller surface becomes rough and metal deposition occurs

Engineering Contradiction:
Improveplating uniformity on productVSAvoidmetal deposition on roller
Core Design Contradiction:
Manufacturing precisionVSObject-generated harmful factors

Solution Approach 1:

The patent extracts the harmful metal deposition effect from the conductive roller by introducing a separate sacrificial anode plate. The anode plate is positioned to receive metal ion deposition instead of the conductive roller, allowing the roller to maintain its smooth surface while still enabling effective plating on the product through the soaking area

Inventive Principle:
Principle #2Taking out (Extraction)

3Object-generated harmful factors

If the conductive roller is frequently detached for cleaning, then the roller surface roughness is prevented, but the plating efficiency is significantly reduced

Engineering Contradiction:
Improveroller surface roughnessVSAvoidplating efficiency
Core Design Contradiction:
Object-generated harmful factorsVSProductivity

Solution Approach 1:

The patent extracts the cleaning maintenance requirement from the conductive roller system by introducing a sacrificial anode plate that accumulates metal deposition. This allows the conductive roller to remain continuously operational without frequent detachment for cleaning, thereby maintaining high plating efficiency while preventing roller surface roughness through the anode's sacrificial function

Inventive Principle:
Principle #2Taking out (Extraction)

4Reliability

If the anode plate device is arranged in the soaking tank, then metal ions can be uniformly distributed and excess metal ions prevented, but the device structure becomes more complex

Engineering Contradiction:
Improveelectrolyte service lifeVSAvoidanode plate arrangement
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the anode plate device with the existing soaking tank structure, integrating the metal ion distribution function into the already-present soaking area. This combination allows uniform metal ion distribution and extended electrolyte service life while avoiding significant increases in overall device complexity by utilizing the existing tank configuration

Inventive Principle:
Principle #5Merging (Combining)

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 design enhances plating and electrolytic degreasing efficiency by preventing metal ion deposition on the rollers, prolonging electrolyte service life, and ensuring uniform current distribution, thus improving the overall process effectiveness and reducing maintenance needs.

Implementation Method 1

cathode conductive roller 2 (the cathode conductive roller doesn't generate circuit will suffice, no matter being soaked or not soaked in plating solution or electrolyte)

Methodology Applied
Scientific EffectElectrical conduction: Conduction (electrical)

Implementation Method 2

the plating solution sprayed by the surge generator passes through the anode device and enable metal ions in the plating solution to be positively charged

Methodology Applied
Scientific EffectElectrolysis: Electrolysis

Implementation Method 3

soaking tank 1, a cathode conductive roller 2, soaking tank 3... when the product passes through the electrolyte in the soaking tank 1 and get in touch with the cathode conductive roller which is not soaked in plating solution or electrolyte, the product in the plating solution or electrolyte has current reaction and begin plating or electrolytic degreasing

Methodology Applied
Scientific EffectElectroplating: Electroplating

Data Source

PatentUS20240360583A1Novel cathode conductive roller device for sheet-type plating or sheet-type cleaning machine
Publication Date: 2024.10.31 CHEN WENZHONG
  • US20240360583A1 patent drawing
  • US20240360583A1 patent drawing

AI summary

The invention discloses a novel cathode conductive roller device for sheet-type plating or sheet-type cleaning machine wherein a cathode conductive roller device is arranged between the soaking tanks (the cathode conductive roller doesn't generate circuit will suffice, no matter being soaked or not soaked in plating solution or electrolyte); an anode plate device is arranged in the soaking tank; a matched conductive plate tank device is arranged below the cathode conductive roller; compared with the prior art, the invention has following advantages: the whole structure is simple and exquisite, the selection, connection and whole working modes of parts are reasonable and complete, and the current is concentrated and uniformly distributed on semiconductor product or circuit board when the method is used for plating or electrolytic degreasing, achieving better product plating or electrolytic degreasing effect.