Molten Solder Agitation Path for Faster Dross Decomposition

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Solution Overview

Problem

Existing soldering apparatuses face limitations in effectively decomposing dross, which is an oxide formed during the oxidation of molten solder.

Innovation Solution

A solder process apparatus with an extension part that reciprocates horizontally in the molten solder while changing its vertical position, accompanied by a partition part to block dross movement, enhancing decomposition efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a large number of vanes are installed on a shaft to decompose dross, then dross decomposition is achieved at a certain level, but the device complexity increases and decomposition effectiveness is limited

Engineering Contradiction:
Improvedross decomposition effectivenessVSAvoiddevice complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The extension part is designed to reciprocate horizontally while changing its vertical position, transforming a static structure into a dynamic one. This dynamic movement creates more effective fluid disturbance and dross decomposition compared to static vanes, while using a simpler single moving component instead of multiple vanes on a shaft

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The extension part moves not only horizontally but also changes its vertical position, adding a vertical dimension to the horizontal reciprocating motion. This two-dimensional movement pattern enhances dross decomposition effectiveness by creating more varied fluid disturbance patterns compared to simple horizontal or vertical movements alone

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Productivity

If the extension part reciprocates horizontally in the molten solder, then dross decomposition is accelerated, but dross may reach the supply unit

Engineering Contradiction:
Improvedross decomposition speedVSAvoidsupply unit protection
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The storage tank is divided into two regions by the partition part: a movement region where the extension part reciprocates to decompose dross, and a supply region where the supply unit is located. The partition part acts as a barrier that segments the tank to prevent dross from reaching the supply unit while allowing the extension part to operate effectively in the movement region

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The partition part serves as an intermediary barrier between the dross decomposition zone and the supply unit. It allows the decomposition process to proceed vigorously in the movement region while blocking the path of dross toward the supply unit, thus protecting the supply unit without interfering with the decomposition process

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP4651645A1Solder process apparatus
Publication Date: 2025.11.19 SENJU METAL IND CO LTD
  • EP4651645A1 patent drawingFigure 1
  • EP4651645A1 patent drawingFigure 2
  • EP4651645A1 patent drawingFigure 3

AI summary

A solder process apparatus has a storage tank 110 that stores molten solder; and an extension part 210, wherein a part of the extension part 210 is extended in the molten solder in the storage tank 110, and the extension part 210 reciprocates in a horizontal direction in the molten solder while performing both upward movement and downward movement at least once when moving from one side to the other side in the horizontal direction.