Method and system for evaluating quality in process of manufacturing cigarette
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A manufacturing process and quality evaluation technology, which is applied in the field of comprehensive quality evaluation of tobacco batch production process, can solve problems such as no improvement in the process, inability to truly reflect the level of processing quality, and difficulty in obtaining results, etc.
Inactive Publication Date: 2012-06-20
CHINA TOBACCO HEBEI INDUSTRIAL CO LTD
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[0004] (2) This method only performs a simple sorting of the calculated results to determine the improvement of the process with poor process quality. It is only the result of the relative comparison of several processes, and sometimes it cannot truly reflect the actual processing quality of the process. When the process capability index Cpk ≥ 1.67 of several processes, the process quality is at a relatively high level, and there is no improvement for relatively poor processes
[0005] (3) Gray relational analysis refers to the quantitative description and comparison of the development and change of a system. Its basic idea is to judge whether the connection is close by determining the geometric similarity between the reference data column and several comparative data columns. It reflects the correlation degree between the curves, but the correlation degree can be divided into absolute correlation degree and relative correlation degree. The absolute correlation degree is initialized by initial point zeroing method. Inconsistent dimensions often affect the analysis and make it difficult to obtain reasonable results
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Embodiment 1
[0072] Embodiment 1 (method for evaluating quality of cigarette manufacturing process):
[0073] Just operate according to the technical solution one in the summary of the invention above.
[0074] Below in conjunction with the manufacturing process quality evaluation example of the loose moisture regaining process in the silk making workshop section further illustrate this method:
[0075] 50 data are collected for each of the five quality characteristics of the loose moisture regain process as shown in Table 1.
[0076] Table 1 Quality characteristics monitoring table of loose moisture regain process
[0077]
[0078] The specification requirements for various quality characteristics of this process are: moisture content (19.0±1.0)%, temperature (53.0±3.0) ℃, flow rate (6000.0±100.0) Kg / h, hot air temperature (70.0±3.0) ℃, steam injection Amount (1000.0±50.0) Kg / h.
[0079] The data in Table 1 are subjected to the standardization process, and the standardized data are ...
Embodiment 2
[0098] Embodiment 2 (cigarette manufacturing process quality evaluation system):
[0099] It can be implemented according to the second technical solution in the above summary of the invention.
[0100] Operation steps of the present invention are as follows:
[0101] (1) The user enters the user name and password, and the authority management module 1 looks up the user authority according to the data in the authority database 8 . If the conditions are met, the user is allowed to operate and use, and is responsible for forcing the user to log out of the system;
[0102] (2) The user imports the data in the quality characteristic value database 9 into the system through the data import module 2;
[0103] (3) The user selects the process category to be evaluated from the process category database 10 through the process category selection module 4, and sends the data to the data selection and preprocessing module 3;
[0104] (4) Data selection and preprocessing module 3 prepro...
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Abstract
The invention discloses a method and system for evaluating quality in the process of manufacturing batch cigarette products. The method and system are characterized in that on the basis of evaluating the process quality of certain procedure single quality characteristic value, process performance indexes of a multivariable procedure are calculated by a principal component analysis method to obtain the weights of all principal components according to the respective characteristics of the procedures of shredding, wrapping, molding and the like, and the process performance indexes of the procedure are acquired through arithmetic weighted average, so that the quality in the process of manufacturing the cigarette is evaluated. Compared with other evaluation methods, the evaluation method disclosed by the invention has the advantages that: the selection of evaluation indexes more conforms to actual production demands, and the actual application range is wider; the establishment of evaluation standards fully refers to the conventional research results and is more scientific and objective; the quality control conditions of all production procedures of the cigarette can be better known through the evaluation; and more adequate data support is provided for continuously improving the quality in the process of manufacturing the cigarette and the final quality.
Description
technical field [0001] The invention discloses a method for evaluating the quality of a cigarette manufacturing process and a system thereof, and belongs to the technical field of comprehensive quality evaluation of the tobacco batch production process. Background technique [0002] A Chinese patent discloses a "Comprehensive Evaluation System and Method for Cigarette Process Quality Based on Gray Relational Analysis" (Patent No. 200810237698.3). The technical points of the above patent are: the system and method described are single-process quality evaluation and gray relational analysis methods The combination of the process capability index of each process parameter is calculated first, and then the Cpk value is comprehensively evaluated by the gray correlation method. The final comprehensive evaluation result is the ranking of the process quality of each evaluation object. Analyze the ranking results of Cpk and process quality. The shortcoming of above-mentioned patent ...
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