A method and system for optimizing screen wiping cycle of a screen printing machine

Abstract

The present invention proposes a method and system for optimizing the screen-wiping cycle of a screen printer. The system for optimizing the screen-wiping cycle of a screen printer comprises: a data acquisition module (100) for collecting SPI printing quality data of the screen printer; a data storage module (200) for storing the SPI printing quality data collected by the data acquisition module (100); a data preprocessing module (300) for screening out key pad volume data obtained by the screen printer during each screen-wiping cycle of printing a printed circuit board from the SPI printing quality data of the screen printer; and a data analysis module (400) for establishing a key pad volume prediction model based on the key pad volume data obtained by the data preprocessing module (300). The system and method for optimizing the screen-wiping cycle of a screen printer of the present invention are novel in design and highly practical.

Description

Technical Field

[0001] The invention relates to the field of electronic product manufacturing, and in particular to a method and system for optimizing a screen-wiping cycle of a screen printer. Background Art

[0002] In the process of printing solder paste on printed circuit boards, after the parameter combination is basically stable, the most important parameter affecting production efficiency is the steel mesh cleaning cycle (grinding cycle). Properly increasing the grinding cycle can significantly improve the efficiency of solder paste printing. At present, the main way to optimize the grinding cycle is for engineers to optimize it on site based on their experience. However, this method requires actual printing for a period of time after adjusting the parameters, and requires taking certain quality risks to achieve the optimized effect. Summary of the invention

[0003] In view of the above problems, the present invention proposes a method and system for optimizing the screen wiping cycle of a screen printing machine.

[0004] The technical solution proposed by the present invention is as follows:

[0005] The present invention proposes an optimization system for a screen-wiping cycle of a screen printing machine, comprising:

[0006] Data acquisition module, used to collect SPI printing quality data of screen printer;

[0007] A data storage module, used for storing the SPI printing quality data collected by the data acquisition module;

[0008] A data preprocessing module is used to filter out key pad volume data obtained by the screen printer during each screen-wiping cycle when printing printed circuit boards from the SPI printing quality data of the screen printer;

[0009] A data analysis module, used to establish a key pad volume prediction model based on the key pad volume data obtained by the data preprocessing module;

[0010] The application module is used to use the key pad volume prediction model to analyze the key pad volume data obtained by the current printing times in the current screen wiping cycle of the screen printer in real time, predict the key pad volume data obtained by the next printing times in the current screen wiping cycle of the screen printer, and determine whether it is lower than the preset volume lower limit. If so, a screen wiping prompt is given.

[0011] In the above-mentioned optimization system of the screen-wiping cycle of the screen printer of the present invention, the data preprocessing module is also used to obtain the printing volume data of each pad on the n printed circuit boards of the same type printed by the screen printer within a preset time period according to the SPI printing quality data of the screen printer, and thereby calculate the safety distance of the kth pad of the printed circuit board, wherein the counting order of the pads on different printed circuit boards is consistent;

[0012]

[0013] Where n represents the number of printed circuit boards;

[0014] d k Indicates the safe distance of the kth pad on the printed circuit board;

[0015] s i represents the printing volume data of the kth pad on the i-th printed circuit board;

[0016] l lower Indicates the lower limit of the printing volume data of the kth pad in n printed circuit boards;

[0017] l upper Indicates the upper limit of the printing volume data of the kth pad in n printed circuit boards;

[0018] Arrange the safety distances of all pads on the printed circuit board from largest to smallest, and the pads corresponding to the last 5% of the safety distances are recorded as key pads;

[0019] The screen wiping cycle is set to m blocks; judging whether the printing volume data of the key pads of the printed circuit boards from the a+jth block to the a+mth block printed by the screen printer continuously decreases;

[0020] If so, the printed circuit boards from the a+1th to the a+mth printed circuit boards printed by the screen printer are recorded as a screen wiping cycle, and the printing volume data of the key pads of all printed circuit boards printed in the screen wiping cycle are saved, and then it is determined whether the printing volume data of the key pads of the printed circuit boards from the a+j+mth to the a+m+mth printed circuit boards printed by the screen printer continuously decrease;

[0021] If not, then determine whether the printing volume data of the key pads of the a+j+1th to a+m+1th printed circuit boards printed by the screen printer continuously decreases; if so, then record the a+2th to a+m+1th printed circuit boards printed by the screen printer as one screen wiping cycle, and save the printing volume data of the key pads of all printed circuit boards printed in the screen wiping cycle, and then determine whether the printing volume data of the key pads of the a+j+m+1th to a+m+m+mth printed circuit boards printed by the screen printer continuously decreases;

[0022] Where a is a natural number; j is a positive integer; when m is an odd number, j = (m + 1) / 2; when m is an even number, j = m / 2;

[0023] The above judgment is repeatedly executed until the printing volume data of the key pads of all printed circuit boards printed by the screen printer are traversed;

[0024] The printing volume data of the key pads of all printed printed circuit boards that are saved are summarized, so as to obtain the key pad volume data obtained by the screen printer during printing of the printed circuit board in each screen wiping cycle.

[0025] In the above-mentioned optimization system of the screen-wiping cycle of the screen printer of the present invention, the data analysis module is used to establish a key pad volume prediction model for predicting the key pad volume data obtained by the screen printer for the next printing number in each screen-wiping cycle according to the key pad volume data obtained by the data preprocessing module through multivariate linear regression analysis.

[0026] In the above-mentioned optimization system of the screen-wiping cycle of the screen printer of the present invention, the key pad volume prediction model is also used to predict the key pad volume data obtained by the screen printer at the next printing number in the screen-wiping cycle according to the key pad volume data obtained at any printing number in each screen-wiping cycle of the screen printer, and then calculate the cumulative data number of the predicted key pad volume data below the preset volume lower limit value; and calculate the proportion of the cumulative data number exceeding the lower limit in the total predicted data number;

[0027] The application module is also used to predict the risk of increasing the screen-wiping cycle based on the proportion exceeding the lower limit.

[0028] In the above-mentioned screen-wiping cycle optimization system of the screen printer of the present invention, the application module is also used to prompt to increase the screen-wiping frequency if the over-lower limit ratio is greater than a preset over-lower limit ratio threshold.

[0029] The present invention also proposes a method for optimizing the screen wiping cycle of a screen printing machine, comprising the following steps:

[0030] Step S1, collecting SPI printing quality data of the screen printer;

[0031] Step S2, filtering out key pad volume data obtained by printing a printed circuit board by the screen printer in each screen-wiping cycle from the SPI printing quality data of the screen printer;

[0032] Step S3, establishing a key pad volume prediction model according to the key pad volume data obtained in step S2;

[0033] Step S4, using the key pad volume prediction model, real-time analysis of the key pad volume data obtained from the current printing times in the current screen wiping cycle of the screen printer, predicting the key pad volume data obtained from the next printing times in the current screen wiping cycle of the screen printer, and determining whether it is lower than the preset volume lower limit. If so, prompting screen wiping.

[0034] In the above-mentioned method for optimizing the screen-wiping cycle of a screen printer of the present invention, step S2 comprises the following steps:

[0035] Step S2.1, according to the SPI printing quality data of the screen printer, obtaining the printing volume data of each pad on n printed circuit boards of the same type printed by the screen printer within a preset time period, and calculating the safety distance of the kth pad of the printed circuit board, wherein the counting order of the pads on different printed circuit boards is consistent;

[0036]

[0037] Where n represents the number of printed circuit boards;

[0038] d k Indicates the safe distance of the kth pad on the printed circuit board;

[0039] s i represents the printing volume data of the kth pad on the i-th printed circuit board;

[0040] l lower Indicates the lower limit of the printing volume data of the kth pad in n printed circuit boards;

[0041] l upper Indicates the upper limit of the printing volume data of the kth pad in n printed circuit boards;

[0042] Arrange the safety distances of all pads on the printed circuit board from largest to smallest, and the pads corresponding to the last 5% of the safety distances are recorded as key pads;

[0043] Step S2.2, the screen wiping cycle is set to m blocks; determine whether the printing volume data of the key pads of the printed circuit boards from the a+jth block to the a+mth block printed by the screen printer continuously decreases;

[0044] If so, the printed circuit boards from the a+1th to the a+mth printed circuit boards printed by the screen printer are recorded as a screen wiping cycle, and the printing volume data of the key pads of all printed circuit boards printed in the screen wiping cycle are saved, and then it is determined whether the printing volume data of the key pads of the printed circuit boards from the a+j+mth to the a+m+mth printed circuit boards printed by the screen printer continuously decrease;

[0045] If not, then determine whether the printing volume data of the key pads of the a+j+1th to a+m+1th printed circuit boards printed by the screen printer continuously decreases; if so, then record the a+2th to a+m+1th printed circuit boards printed by the screen printer as one screen wiping cycle, and save the printing volume data of the key pads of all printed circuit boards printed in the screen wiping cycle, and then determine whether the printing volume data of the key pads of the a+j+m+1th to a+m+m+mth printed circuit boards printed by the screen printer continuously decreases;

[0046] Where a is a natural number; j is a positive integer; when m is an odd number, j = (m + 1) / 2; when m is an even number, j = m / 2;

[0047] The above judgment is repeatedly executed until the printing volume data of the key pads of all printed circuit boards printed by the screen printer are traversed;

[0048] Step S2.3, summarizing and saving the printing volume data of the key pads of all printed printed circuit boards, thereby obtaining the key pad volume data obtained by the screen printer during each screen wiping cycle when printing the printed circuit board.

[0049] In the above-mentioned method for optimizing the screen-wiping cycle of a silk screen printer of the present invention, step S3 includes: based on the key pad volume data obtained in step S2, through multivariate linear regression analysis, establishing a key pad volume prediction model for predicting the key pad volume data obtained by the silk screen printer for the next printing number in each screen-wiping cycle based on the key pad volume data obtained at any number of printing times in each screen-wiping cycle of the silk screen printer.

[0050] In the above-mentioned method for optimizing the screen-wiping cycle of the screen printer of the present invention, the key pad volume prediction model is also used to predict the key pad volume data obtained by the screen printer at the next printing number in the screen-wiping cycle according to the key pad volume data obtained at any printing number in each screen-wiping cycle of the screen printer, and then calculate the cumulative data quantity of the predicted key pad volume data that is lower than the preset volume lower limit value; and calculate the proportion of the cumulative data quantity exceeding the lower limit in the total predicted data quantity;

[0051] Step S4 also includes: predicting the risk of increasing the net-wiping cycle according to the ratio exceeding the lower limit.

[0052] In the above-mentioned method for optimizing the screen-wiping cycle of a screen printer of the present invention, step S4 further comprises: if the excess lower limit ratio is greater than a preset excess lower limit ratio threshold, prompting to increase the screen-wiping frequency.

[0053] The screen-wiping cycle optimization system and method of the present invention realizes the periodic data screening of screen-wiping before data mining; according to the solder paste printing quality data, the machine learning algorithm is used to predict the key pad volume data of the next printing times, and the screen-wiping is prompted accordingly. The screen-wiping cycle optimization system and method of the present invention are novel in design and highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0055] Figure 1 A schematic diagram of functional modules of a screen printing machine screen wiping cycle optimization system according to a preferred embodiment of the present invention is shown. DETAILED DESCRIPTION

[0056] The technical problem to be solved by the present invention is: At present, the main optimization method for the screen wiping cycle is for engineers to optimize it on site based on their experience, but this method requires adjusting the parameters and then actually printing for a period of time, and requires taking certain quality risks to obtain the optimized effect. The technical idea proposed by the present invention to solve this technical problem is to construct a method and system for optimizing the screen wiping cycle of a screen printer, establish a screen wiping cycle optimization prediction model, and improve the efficiency of solder paste printing by analyzing real-time big data through data analysis.

[0057] In order to make the technical purpose, technical scheme and technical effect of the present invention clearer and to facilitate those skilled in the art to understand and implement the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0058] like Figure 1 As shown, Figure 1 The functional module schematic diagram of the screen-wiping cycle optimization system of the screen printing machine according to the preferred embodiment of the present invention is shown; specifically, the screen-wiping cycle optimization system of the screen printing machine includes:

[0059] The data acquisition module 100 is used to collect SPI printing quality data of the screen printer;

[0060] The data storage module 200 is used to store the SPI printing quality data collected by the data acquisition module 100;

[0061] The data preprocessing module 300 is used to filter out the key pad volume data obtained by the screen printer during each screen-wiping cycle when printing on the printed circuit board from the SPI printing quality data of the screen printer;

[0062] Here, the data preprocessing module 300 realizes its function by collecting the screen-wiping cycle of the screen printer, the number of printing times of the screen printer within the screen-wiping cycle, and the key pad volume data obtained by the screen printer when printing the printed circuit board, and performing data fusion and feature data screening.

[0063] In a specific embodiment, the key pad volume data refers to the key pad solder paste printing volume; the data set processed by the data preprocessing module 300 is shown in Table 1:

[0064] Table 1 Key pad volume data obtained by screen printer during each screen wiping cycle

[0065]

[0066] The data preprocessing module 300 is also used to obtain the printing volume data of each pad on n printed circuit boards of the same type printed by the screen printer within a preset time period according to the SPI printing quality data of the screen printer, and thereby calculate the safety distance of the kth pad of the printed circuit board, wherein the counting order of the pads on different printed circuit boards is consistent;

[0067]

[0068] Where n represents the number of printed circuit boards;

[0069] d k Indicates the safe distance of the kth pad on the printed circuit board;

[0070] s i represents the printing volume data of the kth pad on the i-th printed circuit board;

[0071] l lower Indicates the lower limit of the printing volume data of the kth pad in n printed circuit boards;

[0072] l upper Indicates the upper limit of the printing volume data of the kth pad in n printed circuit boards;

[0073] Arrange the safety distances of all pads on the printed circuit board from largest to smallest, and the pads corresponding to the last 5% of the safety distances are recorded as key pads;

[0074] The screen wiping cycle is set to m blocks; judging whether the printing volume data of the key pads of the printed circuit boards from the a+jth block to the a+mth block printed by the screen printer continuously decreases;

[0075] If so, the printed circuit boards from the a+1th to the a+mth printed circuit boards printed by the screen printer are recorded as a screen wiping cycle, and the printing volume data of the key pads of all printed circuit boards printed in the screen wiping cycle are saved, and then it is determined whether the printing volume data of the key pads of the printed circuit boards from the a+j+mth to the a+m+mth printed circuit boards printed by the screen printer continuously decrease;

[0076] If not, then determine whether the printing volume data of the key pads of the a+j+1th to a+m+1th printed circuit boards printed by the screen printer continuously decreases; if so, then record the a+2th to a+m+1th printed circuit boards printed by the screen printer as one screen wiping cycle, and save the printing volume data of the key pads of all printed circuit boards printed in the screen wiping cycle, and then determine whether the printing volume data of the key pads of the a+j+m+1th to a+m+m+mth printed circuit boards printed by the screen printer continuously decreases;

[0077] Where a is a natural number; j is a positive integer; when m is an odd number, j = (m + 1) / 2; when m is an even number, j = m / 2;

[0078] The above judgment is repeatedly executed until the printing volume data of the key pads of all printed circuit boards printed by the screen printer are traversed;

[0079] The printing volume data of the key pads of all printed printed circuit boards that are saved are summarized, so as to obtain the key pad volume data obtained by the screen printer during printing of the printed circuit board in each screen wiping cycle.

[0080] The data analysis module 400 is used to establish a key pad volume prediction model according to the key pad volume data obtained by the data preprocessing module 300;

[0081] Specifically, the data analysis module 400 is used to establish a key pad volume prediction model for predicting the key pad volume data obtained by the screen printer for the next printing number in each screen wiping cycle based on the key pad volume data obtained by any printing number in each screen wiping cycle of the screen printer through multivariate linear regression analysis based on the key pad volume data obtained by the data preprocessing module 300.

[0082] Application module 500 is used to use the key pad volume prediction model to analyze in real time the key pad volume data obtained from the current number of prints in the current screen wiping cycle of the screen printer, predict the key pad volume data obtained from the next number of prints in the current screen wiping cycle of the screen printer, and determine whether it is lower than the preset volume lower limit. If so, a screen wiping prompt is given.

[0083] In the above technical scheme, the optimization system of the screen printing machine screen wiping cycle of the present invention realizes the screening of periodic screen wiping data before data mining; based on the solder paste printing quality data, a machine learning algorithm is used to predict the key pad volume data of the next printing times, and use this to prompt screen wiping.

[0084] The key pad volume prediction model is also used to predict the key pad volume data obtained by the screen printer at the next printing times in each screen wiping cycle according to the key pad volume data obtained at any printing times in each screen wiping cycle, and then calculate the cumulative data quantity of the predicted key pad volume data that is lower than the preset volume lower limit value; and calculate the proportion of the cumulative data quantity exceeding the lower limit in the total predicted data quantity;

[0085] The application module 500 is further used to predict the risk of increasing the screen-wiping cycle according to the ratio exceeding the lower limit.

[0086] In a specific embodiment, the proportion of the cumulative data quantity to the predicted total data quantity exceeding the lower limit can be seen in Table 2.

[0087] Table 2 Calculation model for the proportion of cumulative data to total predicted data exceeding the lower limit

[0088]

[0089] Here, specifically, the application module 500 is further used to prompt to increase the net-wiping frequency if the over-lower-limit ratio is greater than a preset over-lower-limit ratio threshold.

[0090] Furthermore, the present invention also proposes a method for optimizing the screen wiping cycle of a screen printing machine, comprising the following steps:

[0091] Step S1, collecting SPI printing quality data of the screen printer;

[0092] Step S2, filtering out key pad volume data obtained by printing a printed circuit board by the screen printer in each screen-wiping cycle from the SPI printing quality data of the screen printer;

[0093] Furthermore, step S2 realizes its function by collecting the screen-wiping cycle of the screen printer, the number of printing times of the screen printer within the screen-wiping cycle, and the key pad volume data obtained by the screen printer printing the printed circuit board, and performing data fusion and feature data screening.

[0094] Step S2 includes the following steps:

[0095] Step S2.1, according to the SPI printing quality data of the screen printer, obtaining the printing volume data of each pad on n printed circuit boards of the same type printed by the screen printer within a preset time period, and calculating the safety distance of the kth pad of the printed circuit board, wherein the counting order of the pads on different printed circuit boards is consistent;

[0096]

[0097] Where n represents the number of printed circuit boards;

[0098] d k Indicates the safe distance of the kth pad on the printed circuit board;

[0099] s i represents the printing volume data of the kth pad on the i-th printed circuit board;

[0100] l lower Indicates the lower limit of the printing volume data of the kth pad in n printed circuit boards;

[0101] l upper Indicates the upper limit of the printing volume data of the kth pad in n printed circuit boards;

[0102] Arrange the safety distances of all pads on the printed circuit board from largest to smallest, and the pads corresponding to the last 5% of the safety distances are recorded as key pads;

[0103] Step S2.2, the screen wiping cycle is set to m blocks; determine whether the printing volume data of the key pads of the printed circuit boards from the a+jth block to the a+mth block printed by the screen printer continuously decreases;

[0104] If so, the printed circuit boards from the a+1th to the a+mth printed circuit boards printed by the screen printer are recorded as a screen wiping cycle, and the printing volume data of the key pads of all printed circuit boards printed in the screen wiping cycle are saved, and then it is determined whether the printing volume data of the key pads of the printed circuit boards from the a+j+mth to the a+m+mth printed circuit boards printed by the screen printer continuously decrease;

[0105] If not, then determine whether the printing volume data of the key pads of the a+j+1th to a+m+1th printed circuit boards printed by the screen printer continuously decreases; if so, then record the a+2th to a+m+1th printed circuit boards printed by the screen printer as one screen wiping cycle, and save the printing volume data of the key pads of all printed circuit boards printed in the screen wiping cycle, and then determine whether the printing volume data of the key pads of the a+j+m+1th to a+m+m+mth printed circuit boards printed by the screen printer continuously decreases;

[0106] Where a is a natural number; j is a positive integer; when m is an odd number, j = (m + 1) / 2; when m is an even number, j = m / 2;

[0107] The above judgment is repeatedly executed until the printing volume data of the key pads of all printed circuit boards printed by the screen printer are traversed;

[0108] Step S2.3, summarizing and saving the printing volume data of the key pads of all printed printed circuit boards, thereby obtaining the key pad volume data obtained by the screen printer during each screen wiping cycle when printing the printed circuit board.

[0109] Step S3, establishing a key pad volume prediction model according to the key pad volume data obtained in step S2;

[0110] Specifically, step S3 includes: based on the key pad volume data obtained in step S2, through multivariate linear regression analysis, establishing a key pad volume prediction model for predicting the key pad volume data obtained by the screen printer for the next printing number in each screen wiping cycle based on the key pad volume data obtained by any printing number in each screen wiping cycle of the screen printer.

[0111] Step S4, using the key pad volume prediction model, real-time analysis of the key pad volume data obtained from the current printing times in the current screen wiping cycle of the screen printer, predicting the key pad volume data obtained from the next printing times in the current screen wiping cycle of the screen printer, and determining whether it is lower than the preset volume lower limit. If so, prompting screen wiping.

[0112] In the above technical scheme, the optimization method of the screen printing machine screen wiping cycle of the present invention realizes the screening of the screen wiping periodic data before data mining; according to the solder paste printing quality data, the machine learning algorithm is used to predict the key pad volume data of the next printing times, and use it to prompt the screen wiping.

[0113] The key pad volume prediction model is also used to predict the key pad volume data obtained by the screen printer at the next printing times in each screen wiping cycle according to the key pad volume data obtained at any printing times in each screen wiping cycle, and then calculate the cumulative data quantity of the predicted key pad volume data that is lower than the preset volume lower limit value; and calculate the proportion of the cumulative data quantity exceeding the lower limit in the total predicted data quantity;

[0114] Step S4 also includes: predicting the risk of increasing the net-wiping cycle according to the ratio exceeding the lower limit.

[0115] Step S4 also includes: if the excess lower limit ratio is greater than a preset excess lower limit ratio threshold, prompting to increase the net cleaning frequency.

[0116] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. An optimization system for screen printing machine screen wiping cycle, It is characterized in that include: A data acquisition module (100), used for collecting SPI printing quality data of a screen printer; A data storage module (200), used for storing the SPI printing quality data collected by the data acquisition module (100); A data preprocessing module (300) is used to filter out key pad volume data obtained by the screen printer during printing of a printed circuit board in each screen-wiping cycle from the SPI printing quality data of the screen printer; A data analysis module (400) is used to establish a key pad volume prediction model based on the key pad volume data obtained by the data preprocessing module (300); The application module (500) is used to use the key pad volume prediction model to analyze in real time the key pad volume data obtained from the current printing times in the current screen-wiping cycle of the screen printer, predict the key pad volume data obtained from the next printing times in the current screen-wiping cycle of the screen printer, and determine whether it is lower than a preset volume lower limit value, and if so, prompt to wipe the screen; The data preprocessing module (300) is also used to obtain the printing volume data of each pad on n printed circuit boards of the same type printed by the screen printer within a preset time period according to the SPI printing quality data of the screen printer, and thereby calculate the safety distance of the kth pad of the printed circuit board, wherein the counting order of the pads on different printed circuit boards is consistent; Where n represents the number of printed circuit boards; d k Indicates the safe distance of the kth pad on the printed circuit board; s i represents the printing volume data of the kth pad on the i-th printed circuit board; l lower Indicates the lower limit of the printing volume data of the kth pad in n printed circuit boards; l upper Indicates the upper limit of the printing volume data of the kth pad in n printed circuit boards; Arrange the safety distances of all pads on the printed circuit board from largest to smallest, and the pads corresponding to the last 5% of the safety distances are recorded as key pads; The screen wiping cycle is set to m blocks; judging whether the printing volume data of the key pads of the printed circuit boards from the a+jth block to the a+mth block printed by the screen printer continuously decreases; If so, the printed circuit boards from the a+1th to the a+mth printed circuit boards printed by the screen printer are recorded as a screen wiping cycle, and the printing volume data of the key pads of all printed circuit boards printed in the screen wiping cycle are saved, and then it is determined whether the printing volume data of the key pads of the printed circuit boards from the a+j+mth to the a+m+mth printed circuit boards printed by the screen printer continuously decrease; If not, then determine whether the printing volume data of the key pads of the a+j+1th to a+m+1th printed circuit boards printed by the screen printer continuously decreases; if so, then record the a+2th to a+m+1th printed circuit boards printed by the screen printer as one screen wiping cycle, and save the printing volume data of the key pads of all printed circuit boards printed in the screen wiping cycle, and then determine whether the printing volume data of the key pads of the a+j+m+1th to a+m+m+mth printed circuit boards printed by the screen printer continuously decreases; Where a is a natural number; j is a positive integer; when m is an odd number, j = (m + 1) / 2; when m is an even number, j = m / 2; The above judgment is repeatedly executed until the printing volume data of the key pads of all printed circuit boards printed by the screen printer are traversed; The printing volume data of the key pads of all printed printed circuit boards that are saved are summarized, so as to obtain the key pad volume data obtained by the screen printer during printing of the printed circuit board in each screen wiping cycle.

2. The optimization system for screen-wiping cycle of a screen printer according to claim 1, It is characterized in that The data analysis module (400) is used to establish a key pad volume prediction model for predicting the key pad volume data obtained by the screen printer at the next printing number in each screen wiping cycle based on the key pad volume data obtained by the data preprocessing module (300) through multivariate linear regression analysis.

3. The optimization system for screen-wiping cycle of a screen printing machine according to claim 2, It is characterized in that The key pad volume prediction model is also used to predict the key pad volume data obtained by the screen printer at the next printing times in each screen wiping cycle according to the key pad volume data obtained at any printing times in each screen wiping cycle, and then calculate the cumulative data quantity of the predicted key pad volume data that is lower than the preset volume lower limit value; and calculate the proportion of the cumulative data quantity exceeding the lower limit in the total predicted data quantity; The application module (500) is also used to predict the risk of increasing the screen-wiping cycle according to the ratio exceeding the lower limit.

4. The system for optimizing the screen-wiping cycle of a screen printing machine according to claim 3, It is characterized in that The application module (500) is also used to prompt to increase the net cleaning frequency if the excess lower limit ratio is greater than a preset excess lower limit ratio threshold.

5. A method for optimizing the screen-wiping cycle of a screen printer. It is characterized in that The following steps are involved: Step S1, collecting SPI printing quality data of the screen printer; Step S2, filtering out key pad volume data obtained by printing a printed circuit board by the screen printer in each screen-wiping cycle from the SPI printing quality data of the screen printer; Step S3, establishing a key pad volume prediction model according to the key pad volume data obtained in step S2; Step S4, using the key pad volume prediction model, real-time analysis of the key pad volume data obtained by the current printing times in the current screen-wiping cycle of the screen printer, predicting the key pad volume data obtained by the next printing times in the current screen-wiping cycle of the screen printer, and judging whether it is lower than the preset volume lower limit, if so, prompting to wipe the screen; Step S2 includes the following steps: Step S2.1, according to the SPI printing quality data of the screen printer, obtaining the printing volume data of each pad on n printed circuit boards of the same type printed by the screen printer within a preset time period, and calculating the safety distance of the kth pad of the printed circuit board, wherein the counting order of the pads on different printed circuit boards is consistent; Where n represents the number of printed circuit boards; d k Indicates the safe distance of the kth pad on the printed circuit board; s i represents the printing volume data of the kth pad on the i-th printed circuit board; l lower Indicates the lower limit of the printing volume data of the kth pad in n printed circuit boards; l upper Indicates the upper limit of the printing volume data of the kth pad in n printed circuit boards; Arrange the safety distances of all pads on the printed circuit board from largest to smallest, and the pads corresponding to the last 5% of the safety distances are recorded as key pads; Step S2.2, the screen wiping cycle is set to m blocks; determine whether the printing volume data of the key pads of the printed circuit boards from the a+jth block to the a+mth block printed by the screen printer continuously decreases; If so, the printed circuit boards from the a+1th to the a+mth printed circuit boards printed by the screen printer are recorded as a screen wiping cycle, and the printing volume data of the key pads of all printed circuit boards printed in the screen wiping cycle are saved, and then it is determined whether the printing volume data of the key pads of the printed circuit boards from the a+j+mth to the a+m+mth printed circuit boards printed by the screen printer continuously decrease; If not, then determine whether the printing volume data of the key pads of the a+j+1th to a+m+1th printed circuit boards printed by the screen printer continuously decreases; if so, then record the a+2th to a+m+1th printed circuit boards printed by the screen printer as one screen wiping cycle, and save the printing volume data of the key pads of all printed circuit boards printed in the screen wiping cycle, and then determine whether the printing volume data of the key pads of the a+j+m+1th to a+m+m+mth printed circuit boards printed by the screen printer continuously decreases; Where a is a natural number; j is a positive integer; when m is an odd number, j = (m + 1) / 2; when m is an even number, j = m / 2; The above judgment is repeatedly executed until the printing volume data of the key pads of all printed circuit boards printed by the screen printer are traversed; Step S2.3, summarizing and saving the printing volume data of the key pads of all printed printed circuit boards, thereby obtaining the key pad volume data obtained by the screen printer during each screen wiping cycle when printing the printed circuit board.

6. The method for optimizing the screen-wiping cycle of a screen printing machine according to claim 5, It is characterized in that Step S3 includes: based on the key pad volume data obtained in step S2, through multivariate linear regression analysis, establishing a key pad volume prediction model for predicting the key pad volume data obtained by the screen printer for the next printing number in each screen wiping cycle based on the key pad volume data obtained at any printing number in each screen wiping cycle of the screen printer.

7. The method for optimizing the screen-wiping cycle of a screen printing machine according to claim 6, It is characterized in that The key pad volume prediction model is also used to predict the key pad volume data obtained by the screen printer at the next printing times in each screen wiping cycle according to the key pad volume data obtained at any printing times in each screen wiping cycle, and calculate the cumulative number of data whose predicted key pad volume data is lower than the preset volume lower limit value; And calculate the proportion of the cumulative data quantity exceeding the lower limit of the total predicted data quantity; Step S4 also includes: predicting the risk of increasing the net-wiping cycle according to the ratio exceeding the lower limit.

8. The method for optimizing the screen-wiping cycle of a screen printing machine according to claim 7, It is characterized in that Step S4 also includes: if the excess lower limit ratio is greater than a preset excess lower limit ratio threshold, prompting to increase the net cleaning frequency.

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