Novel spraying frame system for PCB etching

By adopting an integrated structure and multi-stage filtration design in the PCB etching spray rack system, the problems of complex structure and nozzle clogging in the spray rack system are solved, achieving convenient installation, improved etching quality and production efficiency.

CN224111389UActive Publication Date: 2026-04-10SHENZHEN JUXIN XIANGRUI MACHINERY EQUIPMENT CO LTD
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Patent Information

Application Number
CN202520854787.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-30
Publication Date
2026-04-10
Estimated Expiration
2035-04-30

AI Technical Summary

Technical Problem

Existing PCB etching spray rack systems are complex in structure, have many components, are difficult to install and debug, and lack an effective filtration mechanism, which makes it easy for impurities in the etching solution to clog the nozzles, affecting etching quality and production efficiency.

Method used

An integrated structure consisting of a nut sleeve, main pipe, and branch pipes was designed, using seamless welding or integral molding for connection. Combined with a multi-stage filtration structure, including an atomizing inner liner, a stage cylinder, and a filter liner, it ensures uniform distribution and fine filtration of the etching solution and prevents nozzle clogging.

Benefits of technology

It simplifies the equipment installation and commissioning process, reduces the failure rate, extends the service life, improves etching quality and production efficiency, and reduces maintenance costs and downtime.

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Abstract

The utility model provides a novel spraying frame system for PCB etching, and belongs to the technical field of machinery. The novel spraying frame system for PCB etching comprises a connecting pipe, a valve and an etching liquid distribution assembly. The outer end of the etching liquid distribution assembly fixedly connected with the other end of the valve is closed, and a spraying part is arranged at the bottom end. The etching liquid distribution assembly is composed of a nut cylinder, a main pipeline and two sets of branch pipelines, all the parts are welded seamlessly or integrally, the structure is simplified, and installation and debugging are convenient. A multi-stage filtering structure is designed in the spraying part and comprises an atomizing inner container, a stage barrel, a filtering container and a gasket, the filtering container comprises a positioning barrel and a plurality of layers of filtering nets, fine filtering of etching liquid is achieved, and a nozzle is prevented from being blocked. And the spraying end of the spraying main body is provided with the spraying holes and the inclined through holes, so that atomization and uniform distribution of the etching liquid are facilitated. The device has the advantages of being compact in structure, convenient to install and maintain, good in filtering effect, even in spraying, long in service life and the like, and the etching quality and the production efficiency of the PCB are effectively improved.
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