PCB stacking method based on weight measurement

Abstract

The invention relates to the technical field of circuit board manufacturing, in particular to a PCB stacking method based on weight measurement, which comprises the following steps of: presetting a stacking sequence of each raw material board according to a PCB, sequentially weighing each layer of raw material board to obtain a weight value corresponding to each layer of raw material board, and then according to the weight value of each type of raw material board, carrying out weight measurement on the raw material board according to the weight value of each type of raw material board. Setting a total weight range value after each layer of raw material plates are sequentially added on the controller, sequentially generating weight range intervals, reading numerical values on the weighing instrument by the controller when the raw material plates are stacked each time, sequentially obtaining weight values, judging whether the weight values are in the weight range intervals of the corresponding times by the controller, and if yes, judging whether the weight values are in the weight range intervals of the corresponding times; therefore, whether the models and the number of the raw material boards stacked each time are correct or not can be detected, so that the type and the stacking sequence of each raw material board are correct, the situations of excessive placement, insufficient placement and wrong placement of the raw material types of the raw material boards in the board stacking process are prevented, and the qualified rate of processing and forming of the multi-layer PCB is ensured.

Description

technical field [0001] The invention relates to the technical field of circuit board fabrication, in particular to a method for stacking PCB boards based on weight measurement. Background technique [0002] The circuit board substrate usually includes a core board, a prepreg and other multi-layer raw material board structures, and there are different models of the core board and the prepreg. The weight of each type of core board and prepreg is different. In the combined production process of the circuit board , it is usually necessary to stack multiple raw material boards and complete the pressing process. During the stacking process, the circuit board stacks need to be stacked in the set order to form the required circuit board structure. Therefore, in the stacking process of the raw material boards There can be no sequence errors in the process. However, in actual production, there are many types of core boards and prepregs, and mistakes are often made in the process of s...

AI Technical Summary

Problems solved by technology

However, in actual production, there are many types of core boards and prepregs, and it is often easy to make mistakes in the process of stacking boards. There are situations where more or less raw material boards are placed, and raw material types are misplaced, resulting in the scrapping of circuit board production and increasing production costs.

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