Expansion and contraction detecting method for multi-layer plate

A detection method and multi-layer board technology, which is applied in the manufacture of printed circuits, electrical components, printed circuits, etc., can solve the problems of inability to monitor the expansion and contraction of the four sides of the board in an all-round way, long production links, low efficiency, etc., and achieve convenient quality monitoring , Improve production cost and facilitate operation

Inactive Publication Date: 2019-03-29
HUIZHOU ZHONGJING ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the production and processing of multi-layer circuit boards in the prior art, it is necessary to inspect and monitor the expansion and contraction of the board during the production process of the circuit board, and provide expansion and contraction data and hole deviation quality confirmation for the drilling process; special equipment is required for measurement in the early production process The expansion and contraction data after the plate is pressed, if there is any expansion and contraction, the engineering modification and adjustment of the drill belt data are required. The production process is too long and the efficiency is low. In addition, the modified drill belt data cannot monitor the expansion and contraction of the four sides of the plate in an all-round way.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A method for detecting the expansion and contraction of a multi-layer board is characterized in that it includes the following steps: determining the expansion and contraction coefficient of the production board after pre-pressing, modifying the expansion and contraction drill tape through the expansion and contraction coefficient, and adjusting the corresponding production board according to the expansion and contraction drill tape Drilling treatment.

[0015] Further, the method for determining the expansion and contraction coefficient includes: designing a circle on the edge of the inner layer film, the PAD is a circle, the size of the PAD is set to 1.2mm, 8 in a single group, one group at each of the four corners of the PNL, and a design in the middle of the PAD 0.6mm drilling diameter.

[0016] Further, through the combination of drilling holes and slicing holes on the edge of the board, the copper removal process is designed from the hole to the circle in a single...

Embodiment 2

[0023] A method for detecting the expansion and contraction of a multi-layer board is characterized in that it includes the following steps: determining the expansion and contraction coefficient of the production board after pre-pressing, modifying the expansion and contraction drill tape through the expansion and contraction coefficient, and adjusting the corresponding production board according to the expansion and contraction drill tape Drilling treatment.

[0024] Further, the method for determining the coefficient of expansion and contraction includes: designing a circle on the edge of the inner layer of the film, the PAD is a circle, the size of the PAD is set to 0.8mm, 6 in a single group, one group for each of the four corners of the PNL, and a design in the middle of the PAD 0.5mm drilling diameter.

[0025] Further, through the combination of drilling holes and slicing holes on the edge of the board, the copper removal process is designed from the hole to the circle ...

Embodiment 3

[0031] A method for detecting the expansion and contraction of a multi-layer board is characterized in that it includes the following steps: determining the expansion and contraction coefficient of the production board after pre-pressing, modifying the expansion and contraction drill tape through the expansion and contraction coefficient, and adjusting the corresponding production board according to the expansion and contraction drill tape Drilling treatment.

[0032] Further, the method for determining the coefficient of expansion and contraction includes: designing a circle on the edge of the inner layer film, the PAD is a circle, the size of the PAD is set to 1.6mm, 10 in a single group, one group at each of the four corners of the PNL, and a design in the middle of the PAD 0.9mm drilling diameter.

[0033] Further, by combining the drilled hole with the slicing hole on the edge of the board, the copper removal process is designed from the hole to the circle in a single gro...

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PUM

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Abstract

The invention provides an expansion and contraction detecting method for a multi-layer plate. The method comprises: determining an expansion-contraction coefficient by a production plate after early-stage pressing; modifying an expansion-contraction drilling belt based on the expansion-contraction coefficient; and carrying out drilling processing on the corresponding production plate according tothe expansion-contraction drilling belt. Therefore, the expansion and contraction measuring flow of a pressing plate can be simplified effectively; the drilling production efficiency can be enhanced;quick transferring to a next procedure for production is realized; the expansion and contraction of the plate can be monitored through a peripheral auxiliary hole during drilling; and production is carried out by direct setting the expansion and contraction data by a drilling bench, so that the efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of circuit board processing, and in particular relates to a multilayer board expansion and contraction detection method. Background technique [0002] In the production and processing of multi-layer circuit boards in the prior art, it is necessary to inspect and monitor the expansion and contraction of the board during the production process of the circuit board, and provide expansion and contraction data and hole deviation quality confirmation for the drilling process; special equipment is required for measurement in the early production process The expansion and contraction data after the plate is pressed, if there is expansion and contraction, the drill belt data needs to be revised and adjusted by the engineer. The production process is too long and the efficiency is low. In addition, the modified drill belt data cannot monitor the expansion and contraction of the four sides of the plate in an all-round...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K3/00
CPCH05K3/0047H05K2203/0214H05K2203/163
Inventor 沈文斌李小海黄波
Owner HUIZHOU ZHONGJING ELECTRONICS TECH CO LTD
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