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Corrosive liquid corrosion system of chip burr etching machine

A technology of etching solution and etching machine, which is used in metal processing, electrical components, semiconductor/solid-state device manufacturing, etc., can solve the problems of insufficient high-voltage electric pulse processing efficiency and difficult chip workpieces, and achieve good corrosion cutting efficiency and removal. The effect of good effect and high pass rate

Pending Publication Date: 2021-07-02
新恒通(江苏)科技有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The high-voltage electric pulse processing efficiency of the invention is not high enough, and it is difficult for small chip workpieces

Method used

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  • Corrosive liquid corrosion system of chip burr etching machine
  • Corrosive liquid corrosion system of chip burr etching machine
  • Corrosive liquid corrosion system of chip burr etching machine

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Embodiment Construction

[0026] Such as figure 1 In the corrosive liquid etching system of the chip burr etching machine shown, one side of the adapter is connected to the rear end of the circular pipeline conveyed by the corrosive liquid. The other side of the adapter is a rectangular surface, and the rectangular surface has two rows of parallel There are a plurality of small liquid outlet holes, each of which is connected with a nozzle, and the nozzle is a tapered nozzle with a pipe diameter changing from thick to thin.

[0027] A booster pump is connected to the front end of the circular pipeline, a pressure gauge is arranged on the pipeline, and the pressure signal of the pressure gauge is transmitted to the controller, which is connected to control the pressurization state of the electric booster pump.

[0028] The cross-sectional area of ​​the inner cavity of the adapter is larger than the cross-sectional area of ​​the circular pipeline, and the pipe diameter cross-sectional area of ​​the multip...

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PUM

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Abstract

The invention provides a corrosive liquid corrosion system of a chip burr etching machine, which is characterized in that the rear end of a round pipeline for conveying corrosive liquid is connected with one side surface of an adapter, the other side surface of the adapter is a rectangular surface, two rows of small liquid outlet holes which are arranged in parallel are formed in the rectangular surface, and each liquid outlet hole is connected with a conical spray head. According to the invention, the burrs are removed by adopting a combined technology of a chemical corrosion technology and a mechanical cutting technology, the usage amount of chemical agents is small, and the chip burr removing efficiency is high.

Description

technical field [0001] The invention relates to the structural shape and control technology of a liquid spray head. Background technique [0002] After multiple chips are bonded to the same copper lead frame, after plastic packaging and slitting, they become independent electronic components with pins. The pins of these electronic components are prone to burrs during slitting and need to be removed. Generally, the method of mechanical deburring is not suitable for precision chips, while ordinary chemical corrosion uses acidic or alkaline solutions. While removing burrs, it will excessively corrode other parts of electronic components, resulting in a decline in appearance or electrical properties, causing defects. Product rate rises. [0003] Water jet, which uses water as a knife, is originally called high-pressure water jet cutting technology. This technology originated in the United States. For aerospace military industry. It is favored for its cold cutting that does no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L21/48H01L21/67B26F3/00
CPCH01L21/4885H01L21/4896H01L21/6708H01L21/67253B26F3/004
Inventor 王锦敏孙一军周毅锋李超
Owner 新恒通(江苏)科技有限公司
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