Two-stage scheduling optimization method and system applied to cigarette factory production scheduling
A technology of production scheduling and stages, applied in data processing applications, manufacturing computing systems, forecasting, etc., can solve problems such as low production efficiency, unsmooth connection between silk making and wrapping, and achieve strong timeliness and reduce card changes. time, effects that guarantee continuity and fluidity
Active Publication Date: 2022-04-29
HUAZHONG UNIV OF SCI & TECH
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[0005] Aiming at the defects and improvement needs of the prior art, the present invention provides a two-stage scheduling optimization method and system applied to the production scheduling of cigarette factories. Production Scheduling Applied to Continuous-Discrete Mixed Mode
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[0066] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0067] The present invention designs a two-stage production scheduling optimization method for the mixed production mode of the cigarette factory, in which the technological process of the wrapping stage is abstracted into a mathematical model, and the objective function is to minimize the wire feeding time and the brand changing time. Solving; in the silk-making stage, the silk-making proces...
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The invention discloses a two-stage scheduling optimization method and system applied to the production scheduling of a cigarette factory, and belongs to the technical field of production scheduling. Including: initializing the wrapping stage parameters and silk making stage parameters; assuming that the silk making stage has unlimited capacity, solving the production scheduling model of the wrapping stage, and obtaining the monthly operation plan of the wrapping stage; inputting the obtained monthly operation plan of the wrapping stage into the system The production scheduling model of the silk stage reverses the production schedule of the silk making stage and determines the daily operation plan of the silk making stage. The present invention establishes a mathematical model for the discrete wrapping stage, and expresses the connection between the silk making stage and the wrapping stage through the constraints of the corresponding relationship between the cigarette brand and the wire feeding machine, and the rule that each brand of shredded tobacco must be aged in the corresponding silk storage cabinet. The monthly subscription operation plan reverses the scheduling of the silk-making stage to ensure the continuous production of the wrapping workshop as planned. The combination of the two obtains the optimal production scheduling scheme of the mixed manufacturing mode, which is more efficient than the current production scheduling method commonly used by cigarette companies.
Description
technical field [0001] The invention belongs to the technical field of production scheduling, and more specifically relates to a two-stage scheduling optimization method and system applied to the production scheduling of cigarette factories. Background technique [0002] The cigarette production process is generally composed of flow-type silk-making process and discrete package production, which is a typical mixed manufacturing mode. The tobacco processing process is different from the general product processing process. Due to its special process requirements, there are many rules and constraints in the production process. As the key link between the silk making stage and the wrapping stage, the silk storage cabinet has the constraint that the next batch of tobacco can only be entered after the tobacco in the cabinet is completely emptied. In the production process, there is a corresponding relationship between the grade of cut tobacco and the wire making line, wire feedin...
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IPC IPC(8): G06Q10/04G06Q10/06G06Q50/04
CPCG06Q10/04G06Q10/06311G06Q50/04Y02P90/30
Inventor 沈倩管在林张正敏王创剑岳磊房伟康
Owner HUAZHONG UNIV OF SCI & TECH