Work in process control method and work in process control system

Abstract

The invention relates to a work-in-process control method in an automated production and manufacturing environment and a work-in-process control system using the work-in-process control method. The work-in-process control method includes: receiving a removal request for the work-in-process from the first process equipment executing the first process; determining whether the second process corresponding to the removal request is a controlled process; In the case of a controlled process, respond to the removal request to remove the work-in-process; in the case of the second process being a controlled process, determine whether the current quantity of the work-in-process used in the second process exceeds its control a threshold; and when the current quantity of work-in-progress used for the second process exceeds its control threshold, stop responding to the removal request.

Description

technical field [0001] The present invention relates to the field of automatic control, and more specifically, the present invention relates to a work-in-progress control method and a work-in-process control system in an automated manufacturing environment. Background technique [0002] In an automated manufacturing environment, the products being processed in each production process and the semi-finished products ready for further processing are called work-in-process (WIP). In the actual production process, due to the differences in stability and marriage rate between the process equipment of each production process, the production capacity between the preceding and following processes is unbalanced, which leads to the in-process production in its process equipment and related storage equipment (such as , the accumulation in the stocker). The accumulation of a large number of WIP will increase the difficulty of logistics transportation, resulting in uneven distribution of...

AI Technical Summary

Problems solved by technology

In the actual production process, due to the differences in stability and marriage rate between the process equipment of each production process, the production capacity between the preceding and following processes is unbalanced, which leads to the in-process production in its process equipment and related storage equipment (such as , the accumulation in the stocker)

The accumulation of a large number of WIP will increase the difficulty of logistics transportation, resulting in uneven distribution of WIP, and even the current stocker where the process equipment is currently located has no place to store WIP, which will greatly reduce the handling efficiency and affect the production capacity of the factory.

In addition, the accumulation of a large amount of work in progress is also a great waste of production. Too much work in progress stored in the factory will lead to a large reduction in the liquidity of the producer, which will have a certain impact on the operation of the factory and the sensitivity of the market response. influences

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