Application of a rework jig for forming ultra-thick circuit boards

A circuit board and fixture technology, applied in the direction of circuit board tool positioning, printed circuit, printed circuit manufacturing, etc., can solve the problems of inability to apply, shift, unstable adsorption, etc., to improve rework yield, simple operation, and reduce rework effect of difficulty

Active Publication Date: 2021-01-12
HUIZHOU KING BROTHER CIRCUIT TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, a circuit board fixture is often used for rework of ultra-thick circuit boards. The circuit board fixture includes a high-temperature suction cup and a pull-down structure. The fixture tray for fixing the circuit board is provided with a plurality of through holes that are compatible with high-temperature silicone suction cups. After the high-temperature silicone suction cup is inserted into the through hole, it is fixedly connected with the pull-down structure. When in use, the air on the upper end of the high-temperature silicone suction cup squeezes out and absorbs the circuit board. The use of this circuit board fixture for ultra-thick circuit boards is prone to unstable adsorption and displacement during the rework process, making it unusable in some processes and has great limitations.

Method used

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  • Application of a rework jig for forming ultra-thick circuit boards

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The production and application of a rework jig for forming an ultra-thick circuit board, the production steps are as follows:

[0025] Step S1, laminating sheet material: design the thickness of the ultra-thick circuit board rework jig according to the thickness of the ultra-thick circuit board, the thickness of the ultra-thick circuit board rework jig is less than 0.2mm of the thickness of the ultra-thick circuit board, and laminate the board according to the designed thickness material, that is, the reworked fixture substrate;

[0026] Step S2, drawing and printing the size of the fixture: according to the size of the ultra-thick circuit board, the size of each side of the ultra-thick circuit board rework fixture is determined to be 0.1mm larger than the size of each side of the ultra-thick circuit board, and the shape of the ultra-thick circuit board rework fixture is the same as The shape of the ultra-thick circuit board is consistent, and the jig design drawing is ...

Embodiment 2

[0032] The production and application of a rework jig for forming an ultra-thick circuit board, the production steps are as follows:

[0033] Step S1, laminating sheet material: design the thickness of the ultra-thick circuit board rework jig according to the thickness of the ultra-thick circuit board, the thickness of the ultra-thick circuit board rework jig is less than 0.5mm of the thickness of the ultra-thick circuit board, and laminate the board according to the designed thickness material, that is, the reworked fixture substrate;

[0034] Step S2, jig size drawing: according to the size of the ultra-thick circuit board, determine the size of each side of the ultra-thick circuit board rework fixture to be 0.2mm larger than the size of each side of the ultra-thick circuit board, and the shape of the ultra-thick circuit board rework jig is the same as The shape of the ultra-thick circuit board is consistent, and the jig design drawing is drawn and printed on the rework jig ...

Embodiment 3

[0040] The production and application of a rework jig for forming an ultra-thick circuit board, the production steps are as follows:

[0041] Step S1, laminating sheet material: design the thickness of the ultra-thick circuit board rework jig according to the thickness of the ultra-thick circuit board, the thickness of the ultra-thick circuit board rework jig is less than 0.8mm of the thickness of the ultra-thick circuit board, and laminate the board according to the designed thickness material, that is, the reworked fixture substrate;

[0042] Step S2, drawing and printing the size of the fixture: according to the size of the ultra-thick circuit board, the size of each side of the ultra-thick circuit board rework fixture is determined to be 0.1mm larger than the size of each side of the ultra-thick circuit board, and the shape of the ultra-thick circuit board rework fixture is the same as The shape of the ultra-thick circuit board is consistent, and the jig design drawing is ...

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Abstract

The invention discloses the manufacture and the application of a rework jig for a molded ultra-thick circuit board. The manufacturing method comprises the following steps of S1, laminating board materials; S2, drawing and printing the size of the jig; S3, manufacturing the jig. The application process of the rework jig for the molded ultra-thick circuit board comprises the following steps of S'1,grinding off a surface circuit; S'2, pasting a film and developing; S'3, carrying out secondary treatment on the ultra-thick circuit board. The invention provides a novel circuit board rework jig. Bymeans of the rework jig, the product scrapping condition caused by incapability of reworking after the ultra-thick circuit board molding process is reduced. The reworking yield of ultra-thick circuitboards is improved, and the operation is simple.

Description

technical field [0001] The invention relates to the technical field of circuit boards, in particular to the application of a molded ultra-thick circuit board rework fixture. Background technique [0002] At present, a circuit board fixture is often used for rework of ultra-thick circuit boards. The circuit board fixture includes a high-temperature suction cup and a pull-down structure. The fixture tray for fixing the circuit board is provided with a plurality of through holes that are compatible with high-temperature silicone suction cups. After the high-temperature silicone suction cup is inserted into the through hole, it is fixedly connected with the pull-down structure. When in use, the air on the upper end of the high-temperature silicone suction cup squeezes out and absorbs the circuit board. The use of this circuit board fixture for ultra-thick circuit boards is prone to unstable adsorption and displacement during the rework process, making it unusable in some process...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K3/00H05K3/22
CPCH05K3/0008H05K3/225
Inventor 白建国陈春刘敏贺超
Owner HUIZHOU KING BROTHER CIRCUIT TECH
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