Reciprocating Electroplating Nozzles for PCB Blind Spot Coverage

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Solution Overview

Problem

The conventional jet electroplating method for circuit boards results in blind spots due to fixed nozzles that limit the spraying range, leading to inadequate coverage and compromised electroplating quality.

Innovation Solution

An electroplating tank equipment with ejecting tubes that move back and forth horizontally, featuring misaligned nozzles and a circulation system to ensure comprehensive spraying of the electroplating solution over the circuit board.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If fixed nozzles are used to spray electroplating solution, then the device structure is simple, but the spraying range is limited and blind spots occur on the circuit board

Engineering Contradiction:
Improvedevice structureVSAvoidspraying range
Core Design Contradiction:
Device complexityVSArea of stationary object

Solution Approach 1:

The patent applies the dynamics principle by transforming the fixed nozzles into movable nozzles that can reciprocate horizontally along guide rails. This dynamic configuration allows the nozzles to cover a wider spraying range and eliminate blind spots on the circuit board, while the guide rails and driving mechanisms maintain the overall structural simplicity. The movable nozzles can adjust their positions to ensure comprehensive coverage of the electroplating solution across the entire circuit board surface.

Inventive Principle:
Principle #15Dynamics

2Device complexity

If fixed nozzles are used, then the device structure is simple, but the electroplating quality is compromised due to blind spots

Engineering Contradiction:
Improvedevice structureVSAvoidelectroplating quality
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The dynamics principle resolves this contradiction by enabling nozzles to move reciprocally along guide rails, ensuring that the entire circuit board surface receives uniform electroplating solution coverage. This eliminates blind spots that would otherwise compromise electroplating quality, while the guide rail system and simple driving mechanism preserve structural simplicity. The movable configuration allows precise control of spray coverage across the circuit board surface.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent applies segmentation by dividing the circuit board into multiple spray zones covered by multiple nozzles arranged in arrays. Each nozzle or group of nozzles can be independently controlled to cover specific areas, ensuring comprehensive coverage without gaps. This segmented approach maintains device simplicity while significantly improving electroplating quality by eliminating blind spots through coordinated spray coverage across multiple zones.

Inventive Principle:
Principle #1Segmentation

3Area of stationary object

If nozzles move back and forth to increase spraying range, then the spraying coverage is improved, but the device complexity increases

Engineering Contradiction:
Improvespraying rangeVSAvoiddevice structure
Core Design Contradiction:
Area of stationary objectVSDevice complexity

Solution Approach 1:

The patent implements dynamics with a straightforward reciprocating mechanism where nozzles move back and forth horizontally along guide rails. This simple dynamic system expands the spraying range to cover the entire circuit board while avoiding complex multi-axis motion systems. The guide rails provide constrained linear motion, and the driving mechanism uses basic actuators to achieve the reciprocating motion, thereby increasing coverage without proportionally increasing device complexity.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent merges multiple functions into the movable nozzle assembly: the nozzles serve both as spray delivery devices and as moving components that define the spray coverage area. The guide rails simultaneously provide motion constraints and structural support. This merging of functions reduces the need for separate complex positioning systems, achieving expanded spraying range with minimal increase in overall device complexity.

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

The solution ensures uniform coverage of the electroplating solution, effectively addressing blind spots and enhancing the overall electroplating quality by allowing the nozzles to spray the metal ions uniformly across the circuit board.

Implementation Method 1

jet electroplating method primarily involves directly spraying an electroplating solution containing metal ions from an electroplating tank onto a circuit board such that the circuit board is electroplated

Methodology Applied
Scientific EffectElectroplating: Electroplating

Data Source

PatentUS20260015755A1Electroplating tank equipment and operating method thereof
Publication Date: 2026.01.15 MANZ TAIWAN
  • US20260015755A1 patent drawing
  • US20260015755A1 patent drawing
  • US20260015755A1 patent drawing

AI summary

An electroplating device includes a carrying module, a moving module, a driving module and ejecting tubes. The carrying module has a slide rail. The moving module has a first portion and a second portion. The first portion is movably disposed in the slide rail. The moving module is moved back and forth parallel to a length direction of the slide rail by the driving module. Opposite two ends of the ejecting tubes are respectively disposed on the first portion and the second portion. When the moving module is driven to move back and forth parallel to the length direction, the moving module drives the ejecting tubes to move back and forth as well. Each of the ejecting tubes has nozzles. The nozzles on the ejecting tube are misaligned with the nozzles on the other ejecting tube adjacent to the ejecting tube.