A copper plating tank for PCB copper sinking

By employing an upper and lower conductive plate structure and a titanium conductive plate in the copper plating tank of the PCB board, the problem of uneven current distribution was solved, achieving uniform deposition of the copper layer on the circuit board and the stability of the equipment, while reducing rework rate and long-term maintenance costs.

CN224299418UActive Publication Date: 2026-05-29SUZHOU TOP CREATION MACHINES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUZHOU TOP CREATION MACHINES
Filing Date
2025-07-18
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing copper plating baths used for PCB board copper plating suffer from uneven current distribution, resulting in excessively thin copper layers in some areas and a high rework rate.

Method used

Design a copper plating tank for PCB board copper plating, adopting an upper and lower conductive plate structure, with current simultaneously introduced from the upper and lower sides of the circuit board, and using titanium material for the upper and lower conductive plates to ensure uniform current distribution and circuit loop reliability, combined with sealing components and connecting components to ensure current stability and ease of installation.

Benefits of technology

It achieves uniform current distribution on the circuit board surface and inside the holes, reduces the phenomenon of excessively thin copper layers in some areas, lowers the rework rate, and improves the stability and service life of the equipment through the use of titanium conductive plates.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to PCB board production equipment technical field, the technical problem that the utility model solves is uneven current distribution, rework rate is too high. In order to solve the above technical problem, the utility model provides a kind of copper tank for the copper of PCB board immersion copper. The utility model includes: rectifier;Outer tank body is equipped with medicine water and conductive roller;Soaking tank is located in outer tank body;Conveying assembly is located in soaking tank, and conveying assembly includes upper roller piece group and the lower roller piece group corresponding with being equipped in upper roller piece group below;Anode plate assembly is located in soaking tank;Anode plate assembly includes upper conductive plate and the lower conductive plate corresponding with being equipped in upper conductive plate below;Upper conductive plate is located in upper roller piece group;Positive terminal is connected with upper conductive plate, lower conductive plate, and negative terminal is connected with conductive roller;Rectifier, conductive roller, circuit board, upper conductive plate, lower conductive plate and soaking liquid constitute circuit loop. The utility model current distribution is more uniform, and rework is reduced.
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