CN-121998307-A - Multi-process branch line production scheduling method and system

CN121998307ACN 121998307 ACN121998307 ACN 121998307ACN-121998307-A

Abstract

The invention provides a multi-process branch line scheduling method and system, the method comprises the steps of obtaining a vehicle production queue and a bill of materials, determining the type, the vehicle configuration and the variety code of each vehicle according to the bill of materials, defining each process branch line as a process unit, setting an adaptive vehicle type, an adaptive vehicle configuration, an adaptive variety code and a split ratio for each process unit, configuring connection relations, split points and a mixing point of each process unit, determining an adaptive target process unit connected with the split points according to the type, the vehicle configuration and the variety code of the vehicle when the vehicle reaches the split points, distributing the vehicle to each target process unit based on the number of the target process units, the split ratio and the vehicle production queue, and merging the vehicle into a main line of a production line through the mixing point after the vehicle finishes processing in the target process unit. The invention can solve the problems of uneven load distribution of the process branch lines and the like, and improves the production efficiency of the whole production line.

Inventors

XIAO XIAO
LV JUNCHENG
FAN WENJIAN
Liu changye
QIU QUAN
LIU WENMING
LIAO XULIN

Assignees

上汽通用五菱汽车股份有限公司

Dates

Publication Date: 20260508
Application Date: 20251230

Claims (10)

1. A method of scheduling multiple process branches, the method comprising: Acquiring a vehicle production queue and a bill of materials corresponding to vehicles in the vehicle production queue; determining the vehicle type, the vehicle configuration and the variety code of each vehicle in the vehicle production queue according to the bill of materials; defining each process branch line in the production line as a process unit, and setting an adaptive vehicle type, an adaptive vehicle configuration, an adaptive variety code and a vehicle dividing ratio for each process unit; configuring a connection relation, a split point and a confluence point of each process unit according to a preset production line layout, wherein the connection relation comprises a parallel relation and a series relation; when the vehicles in the vehicle production queue reach the split point, determining an adaptive target process unit connected with the split point according to the vehicle type, the vehicle configuration and the variety code of the vehicles; allocating vehicles to each of the target process units based on the target process unit number, the split ratio, and the vehicle production line; And after the vehicle finishes processing in the target process unit, the vehicle is integrated into the main line of the production line through the junction point.
2. The method of claim 1, wherein the obtaining a vehicle production line and a bill of materials for vehicles in the vehicle production line comprises: Receiving vehicle data of a vehicle to be produced, which is issued by a manufacturing execution system, wherein the vehicle data comprises a vehicle assembly serial number, a vehicle tracking password and a vehicle serial number; sorting the vehicles to be produced according to the vehicle assembly serial numbers, and determining the vehicle production queue; and searching a bill of materials corresponding to the vehicles in the vehicle production queue in a manufacturing execution system according to the vehicle tracking password and the vehicle serial number.
3. The method of claim 1, wherein defining each process leg in a production line as a process unit and setting an adapted vehicle type, an adapted vehicle configuration, an adapted category code, and a split ratio for each of the process units comprises: And establishing a process unit attribute table for each process unit, and recording the type, the configuration and the variety code of the adaptive vehicles supported by the process unit and the corresponding preset vehicle dividing ratio of the process unit in the process unit attribute table.
4. The method of claim 1, wherein configuring the connection relationship, split point and merge point of each of the process units according to a predetermined line layout comprises: determining the connection relation of each process branch line according to the production line layout; Numbering the process units corresponding to the process branch lines according to the connection relation, wherein the process units in parallel connection relation are numbered in the form of the same main number and the serial number of the auxiliary number, and the process units in serial connection relation are numbered by the serial number; setting split points at inlets of a plurality of process units in parallel connection; a junction is provided at the outlet of a plurality of process units in series or parallel relationship for re-routing the vehicle to a main line or downstream process unit.
5. The method according to claim 4, wherein the method further comprises: determining a process unit sequence according to the connection relation of each process unit; and pulling the required materials of each process unit in sequence based on the process unit sequence.
6. The method of claim 1, wherein said determining an adapted target process unit associated with said split point based on a vehicle type, vehicle configuration and class code of said vehicle when a vehicle in said vehicle production line reaches said split point comprises: At the split point, matching with the matched vehicle type, the matched vehicle configuration and the matched variety code of each connected process unit according to the vehicle type, the vehicle configuration and the variety code of the vehicle; If both match, the process unit is determined to be the target process unit.
7. The method of claim 6, wherein the method further comprises: If one or more of the vehicle type, the vehicle configuration and the variety code of the vehicle are not matched with the matched vehicle type, the matched vehicle configuration and the matched variety code of each connected process unit, the vehicle is judged to be misplaced in the production line, the vehicle is moved out of the production line, and abnormal information is reported.
8. The method of claim 1, wherein said assigning vehicles to each of said target process units based on said target process unit number, said split ratio, and said vehicle production line comprises: if there is only one of the target process units, assigning a vehicle to the target process unit; If the target process units are a plurality of, vehicles are distributed to each target process unit according to the vehicle dividing proportion and the order of the vehicle production queues.
9. The method of claim 8, wherein if the target process unit is a plurality of, assigning vehicles to each of the target process units in the order of the split ratio and the vehicle production line comprises: And in each wheel distribution period, determining the number of vehicles which each process unit should receive in the wheel distribution period according to the vehicle distribution proportion of each target process unit, and sequentially distributing the vehicles to each target process unit according to the sequence of the vehicles in the vehicle production queue.
10. A multi-process branch line scheduling system is characterized by comprising a manufacturing execution system, a group control system and an intelligent trolley scheduling system, wherein, The manufacturing execution system is used for issuing vehicle data of vehicles to be produced, wherein the vehicle data comprises a vehicle assembly serial number, a vehicle tracking password and a vehicle serial number, and is used for providing a bill of materials corresponding to the vehicles in the vehicle production queue; the group control system is used for generating a vehicle production queue according to the vehicle assembly serial number issued by the manufacturing execution system; the group control system is further used for analyzing the vehicle type, the vehicle configuration and the variety code of each vehicle in the vehicle production queue based on the bill of materials, and configuring the connection relation, the split point and the merging point of the process units according to the preset production line layout; The group control system is further used for distributing each vehicle in the vehicle production queue to a corresponding process unit; and the intelligent trolley dispatching system is used for controlling the intelligent trolley to execute the transfer of the vehicle among the process units according to the distribution result of the group control system.

Description

Multi-process branch line production scheduling method and system Technical Field The invention relates to the technical field of intelligent manufacturing and production scheduling, in particular to a multi-process branch line scheduling method and system. Background In an automobile assembly workshop, as the requirements of vehicle type platformization, multi-configuration mixed line production and flexible production are continuously improved, a main line often needs to distribute vehicles with different vehicle types and different configurations to a plurality of downstream process branch lines for processing. The existing production line generally adopts a structure that a plurality of process branch lines are connected in parallel or in series so as to realize different process demands such as spraying, adding, detecting, welding or specific attribute interaction. In order to realize the shunt control of the process branch lines, a manufacturing execution system generally issues a vehicle production queue in the traditional scheme, and a group control or scheduling system guides vehicles into a certain branch line according to the type/configuration rule of the vehicles, for example, when a certain vehicle type can only be processed in a specific branch line, the vehicle type or configuration is uniquely matched and allocated, and when a plurality of branch lines all have the same processing capacity, the allocation is usually completed by adopting the rule of fixing the branch line binding. However, the fixed binding or the distribution according to the vehicle type/configuration rule can meet the process adaptation, but under the scene that the capacities of a plurality of process branch lines are close or partially overlapped, the overall arrangement of the branch line capacity difference, the product stacking and the production takt fluctuation is lacking, so that long-term congestion of some process branch lines and idle of other process branch lines are easily caused, and uneven load of the process branch lines is formed. Therefore, there is a need for a method of scheduling multiple process branches. Disclosure of Invention In order to overcome the shortcomings in the prior art, the present invention provides a method and a system for scheduling multiple process branches. In a first aspect, a method for scheduling multiple process branches is provided, the method comprising: Acquiring a vehicle production queue and a bill of materials corresponding to vehicles in the vehicle production queue; determining the vehicle type, the vehicle configuration and the variety code of each vehicle in the vehicle production queue according to the bill of materials; defining each process branch line in the production line as a process unit, and setting an adaptive vehicle type, an adaptive vehicle configuration, an adaptive variety code and a vehicle dividing ratio for each process unit; configuring a connection relation, a split point and a confluence point of each process unit according to a preset production line layout, wherein the connection relation comprises a parallel relation and a series relation; when the vehicles in the vehicle production queue reach the split point, determining an adaptive target process unit connected with the split point according to the vehicle type, the vehicle configuration and the variety code of the vehicles; allocating vehicles to each of the target process units based on the target process unit number, the split ratio, and the vehicle production line; And after the vehicle finishes processing in the target process unit, the vehicle is integrated into the main line of the production line through the junction point. As an optional implementation manner, the acquiring a vehicle production queue and a bill of materials corresponding to vehicles in the vehicle production queue includes: Receiving vehicle data of a vehicle to be produced, which is issued by a manufacturing execution system, wherein the vehicle data comprises a vehicle assembly serial number, a vehicle tracking password and a vehicle serial number; sorting the vehicles to be produced according to the vehicle assembly serial numbers, and determining the vehicle production queue; and searching a bill of materials corresponding to the vehicles in the vehicle production queue in a manufacturing execution system according to the vehicle tracking password and the vehicle serial number. As an alternative embodiment, the defining each process branch line in the production line as a process unit, and setting an adapted vehicle type, an adapted vehicle configuration, an adapted variety code and a split ratio for each process unit includes: And establishing a process unit attribute table for each process unit, and recording the type, the configuration and the variety code of the adaptive vehicles supported by the process unit and the corresponding preset vehicle dividing ratio of the process unit in the process unit attrib