CN-122022173-A - Method and device for identifying bottleneck of production line, electronic equipment, medium and product

CN122022173ACN 122022173 ACN122022173 ACN 122022173ACN-122022173-A

Abstract

The invention relates to the technical field of production and manufacturing, and discloses a method and a device for identifying bottleneck of a production line, electronic equipment, media and products, wherein the method and the device are characterized in that equipment state data, production beat data and quality loss data of all the equipment are utilized, and analyzing the production cycle times consumed by each device in unit time respectively in different device states and when different types of waste pieces are produced, and obtaining the unit cycle times of each device. And the unit circulation times of all the devices are combined, the production circulation times consumed by the devices and the working procedures in the production line are compared and analyzed, and the bottleneck working procedures and/or bottleneck devices of the production line are dynamically and accurately positioned. And the bottleneck causes of the bottleneck are traced by combining the production cycle times consumed by different equipment states and different waste part types, so that a bottleneck optimization decision basis is provided for a manager.

Inventors

HE XIANGFEI
YAN KANGMIN
TANG XUE
LI DONGWEI
LIN ZHAOFU

Assignees

重庆长安汽车股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260202

Claims (12)

1. A method for identifying a bottleneck of a production line, the production line comprising a plurality of series-connected processes, each process comprising at least one device, each device comprising a plurality of device states, the method comprising: Acquiring production line data of each device, wherein the production line data comprises device state data, production beat data and quality loss data; Obtaining first unit circulation times of each device according to the device state data and the production takt data, wherein the first unit circulation times are used for representing production circulation times consumed by different device states of the device in unit time, and each production circulation time corresponds to the production time of one workpiece; Obtaining a second unit cycle number of each device according to the quality loss data, wherein the second unit cycle number is used for representing the production cycle number consumed by different waste piece types of the device in unit time; And obtaining a bottleneck identification result of the production line based on the first unit circulation times and the second unit circulation times of each device, wherein the bottleneck identification result comprises a bottleneck procedure and/or bottleneck device and/or bottleneck cause.
2. The method for identifying a bottleneck in a production line according to claim 1, wherein said obtaining a first number of cycles per unit of each device based on said device status data and said tact data comprises: determining the planned production time of the production line, and obtaining the total duration of each equipment state of each equipment based on the equipment state data in the planned production time, wherein the equipment states comprise offline, shutdown, scram, abnormal shutdown, tool change, idle running, maintenance, passing mode, non-automatic mode, circulation stop, calibration, material blocking, waiting and production; obtaining, for each device, an occupancy time per unit time for each device state of the device based on the produced time of the device and the total duration of each device state; And obtaining a first unit cycle number of the equipment according to the production takt data and the occupied time of each equipment state of the equipment in unit time for each equipment.
3. The method for identifying a bottleneck in a production line according to claim 2, wherein the obtaining a first number of cycles per unit of the device according to the takt data and the occupied time per unit time of each device state of the device comprises: obtaining the average production takt of the equipment according to the production takt data; And according to the ratio of the occupied time of the equipment state in unit time to the average production takt, obtaining the number of production cycles consumed by the equipment state in unit time for each equipment state of the equipment.
4. The method for identifying a bottleneck in a production line according to claim 2, wherein the obtaining the second number of cycles per unit of each device according to the quality loss data comprises: Obtaining the quantity of waste pieces of different waste piece types produced by each equipment in unit time according to the quality loss data of each equipment in the produced time, wherein the waste piece types comprise repeated line passing workpieces, industrial waste and material waste; And obtaining the production cycle times of repeated line passing workpieces, work wastes and material wastes of each device respectively consumed in unit time according to the number of waste parts of different waste part types produced by each device in unit time.
5. The method for identifying a bottleneck in a production line according to any one of claims 2 to 4, wherein the obtaining the bottleneck identification result in the production line based on the first unit cycle number and the second unit cycle number of each device includes: Calculating a third unit cycle number of each device according to the first unit cycle number and the second unit cycle number of each device, wherein the third unit cycle number is used for representing different device states of the device and the production cycle number consumed by different waste part types in unit time; extracting the production cycle times consumed by the production equipment state of the equipment in unit time based on the third unit cycle times of the equipment aiming at each equipment to obtain the equipment net production capacity index of the equipment, wherein the production equipment state comprises material blocking, material waiting and production; And calculating to obtain the process net capacity index of each process according to the equipment net capacity indexes of all the equipment in each process, and identifying the process with the minimum process net capacity index to obtain the bottleneck process of the production line.
6. The method for identifying a bottleneck in a production line according to claim 5, wherein the obtaining the bottleneck identification result in the production line based on the first unit cycle number and the second unit cycle number of each device further comprises: and identifying the equipment with the minimum net capacity index in the bottleneck process to obtain bottleneck equipment of the production line.
7. The method for identifying a bottleneck in a production line according to claim 6, wherein the obtaining the bottleneck identification result in the production line based on the first unit cycle number and the second unit cycle number of each device further comprises: Identifying a target equipment state and a target waste type, wherein the target equipment state and the target waste type have the largest production cycle number consumed by the bottleneck process and/or bottleneck equipment in unit time, and the target equipment state is an equipment state except a production equipment state; and obtaining the bottleneck reasons of the production line according to the target equipment state and the target waste type.
8. The method for identifying a bottleneck of a production line according to claim 5, characterized in that the method further comprises: And visually displaying the third unit circulation times of each device, the net production capacity index of the device and the net production capacity index of each process.
9. A bottleneck identification device for a production line is characterized by comprising a plurality of series-connected working procedures, wherein each working procedure comprises at least one device, each device comprises a plurality of device states, and the device comprises: The system comprises a first processing module, a second processing module and a third processing module, wherein the first processing module is used for acquiring production line data of each device, and the production line data comprises device state data, production beat data and quality loss data; the second processing module is used for obtaining a first unit cycle number of each device according to the device state data and the production takt data, wherein the first unit cycle number is used for representing the production cycle number consumed by different device states of the device in unit time, and each production cycle number corresponds to the production time of one workpiece; The third processing module is used for obtaining a second unit cycle number of each device according to the quality loss data, wherein the second unit cycle number is used for representing the production cycle number consumed by different waste piece types of the device in unit time; And the fourth processing module is used for obtaining a bottleneck identification result of the production line based on the first unit circulation times and the second unit circulation times of each device, wherein the bottleneck identification result comprises a bottleneck procedure and/or bottleneck device and/or bottleneck cause.
10. An electronic device, comprising: a memory and a processor, the memory and the processor being communicatively connected to each other, the memory having stored therein computer instructions, the processor executing the computer instructions to perform the line bottleneck identification method of any one of claims 1 to 8.
11. A computer-readable storage medium having stored thereon computer instructions for causing a computer to perform the line bottleneck identification method of any one of claims 1 to 8.
12. A computer program product comprising computer instructions for causing a computer to perform the method of line bottleneck identification as claimed in any one of claims 1 to 8.

Description

Method and device for identifying bottleneck of production line, electronic equipment, medium and product Technical Field The invention relates to the technical field of production and manufacturing, in particular to a method and a device for identifying a bottleneck of a production line, electronic equipment, a medium and a product. Background In modern discrete manufacturing industries such as automobiles, aerospace, precision machining and the like, accurate identification of a bottleneck of a production line is a core link for improving the overall efficiency (Overall Equipment Effectiveness, OEE) of the production line and realizing lean production, but the high automation and the intellectualization of the production line enable the dynamic property and the concealment of a bottleneck station to be enhanced. The traditional bottleneck recognition scheme mainly relies on station beats for analysis, and has the limitation that the data dimension is single, and only bottlenecks caused by beat reasons can be recognized. In the prior art, the bottleneck is dynamically identified through multi-index fusion, for example, the bottleneck is judged through calculating the load rate, the utilization rate and the like of equipment, the preliminary crossing from manual experience to data driving is realized, the problem of single data dimension is solved to a certain extent, but the bottleneck identification effect on external factors such as fluctuation of quality of materials is limited, and the cause of the bottleneck cannot be identified. Disclosure of Invention The invention provides a method, a device, electronic equipment, a medium and a product for identifying a bottleneck of a production line, which are used for solving the problem that the bottleneck and the cause of the bottleneck of the production line cannot be accurately identified in the prior art. In a first aspect, the invention provides a method for identifying a bottleneck of a production line, the production line comprising a plurality of series-connected working procedures, each working procedure comprising at least one device, each device comprising a plurality of device states, the method comprising: Acquiring production line data of each device, wherein the production line data comprises device state data, production beat data and quality loss data; Obtaining first unit cycle times of each device according to the device state data and the production takt data, wherein the first unit cycle times are used for representing production cycle times consumed by different device states of the device in unit time, and each production cycle time corresponds to the production time of one workpiece; Obtaining second unit circulation times of each device according to the quality loss data, wherein the second unit circulation times are used for representing the production circulation times consumed by different waste piece types of the device in unit time; And obtaining a bottleneck identification result of the production line based on the first unit circulation times and the second unit circulation times of each device, wherein the bottleneck identification result comprises a bottleneck procedure and/or bottleneck equipment and/or a bottleneck cause. According to the invention, the production cycle times consumed by each device in unit time in different device states and different types of waste parts production are analyzed through the device state data, the production beat data and the quality loss data of each device, so that the unit cycle times of each device are obtained. And the unit circulation times of all the devices are combined, the production circulation times consumed by the devices and the working procedures in the production line are compared and analyzed, and the bottleneck working procedures and/or bottleneck devices of the production line are dynamically and accurately positioned. And the bottleneck causes of the bottleneck are traced by combining the production cycle times consumed by different equipment states and different waste part types, so that a bottleneck optimization decision basis is provided for a manager. In some alternative embodiments, obtaining the first cycle number of each device according to the device status data and the tact data includes: Determining the planned production time of a production line, and obtaining the total duration of each equipment state of each equipment based on the equipment state data in the planned production time, wherein the equipment states comprise offline, shutdown, scram, abnormal shutdown, tool changing, dry running, maintenance, passing mode, non-automatic mode, circulation stop, calibration, material blocking, material waiting and production; obtaining, for each device, an occupation time of each device state of the device within a unit time according to the produced time of the device and the total duration of each device state; And obtaining the first unit cycle times of the equi