A method for optimizing a global cycle of a multi-mechanism device

Abstract

The present application relates to production line optimization, in particular to a kind of whole line beat optimization method of multi-mechanism equipment, unified equipment state classification and mechanism naming specification, provide uniform standard for subsequent multi-mechanism joint determination;Based on multi-mechanism joint determination rule, respectively, the upstream waiting time of single equipment, downstream waiting time, abnormal stop time are counted;Based on the time calculated by statistics, the time of single equipment and whole line is driven and the real beat time;By comparing the real beat time of each equipment, the production bottleneck equipment of whole line is identified, and the whole line beat optimization direction is determined;The technical scheme provided by the present application can effectively overcome the defects that the whole line beat of multi-mechanism equipment cannot be reasonably optimized in prior art.

Description

Technical Field

[0001] This invention relates to production line optimization, specifically to a method for optimizing the cycle time of a multi-mechanism equipment production line. Background Technology

[0002] In production lines with multiple machines, accurately determining the cycle time of equipment and identifying bottleneck units presents numerous challenges. When the cycle times of multiple machines are not significantly different, determining the speed requires considerable time, effort, and cost. For example, it necessitates assigning personnel to record any abnormalities on each machine and using stopwatches to measure the time of each machine's actions for extended periods, lacking accurate and convenient methods for assessment.

[0003] In actual production, if two machines have similar cycle times, such as machine A having a cycle time of 5 seconds and machine B having a cycle time of 5.1 seconds, it is difficult to detect the difference between them in a short period of time. If we also consider the impact of factors such as the stability of equipment image alignment, material picking success rate, and tray replacement, it becomes even more difficult to distinguish the cycle time of the equipment in the production process, and thus it is difficult to formulate effective countermeasures to improve the overall cycle time of multi-mechanism equipment lines.

[0004] Furthermore, existing methods for calculating upstream and downstream settings have flaws, failing to accurately measure the time equipment spends waiting for upstream and downstream components. Current calculations only count the waiting time of the last mechanism on the equipment. However, in most cases, the cycle time of a single mechanism is much faster than that of the entire production line. Calculating using this method leads to inaccurate time statistics, hindering the optimization of the cycle time of multi-mechanism production lines. Summary of the Invention

[0005] (a) Technical problems to be solved In view of the above-mentioned shortcomings of the existing technology, the present invention provides a method for optimizing the cycle time of a multi-mechanism equipment production line, which can effectively overcome the shortcomings of the existing technology in that it is difficult to reasonably optimize the cycle time of a multi-mechanism equipment production line.

[0006] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: A method for optimizing the cycle time of a multi-mechanism equipment production line includes the following steps: S1. Standardize equipment status classification and organization naming conventions to provide a unified standard for subsequent joint judgment by multiple organizations; S2. Based on the joint judgment rules of multiple institutions, the upstream waiting time, downstream waiting time, and abnormal stop time of a single device are calculated separately. S3. Calculate the time utilization rate and actual cycle time of a single device and the entire line based on statistical time calculations; S4. By comparing the actual cycle time of each device, identify the bottleneck device of the entire production line and determine the direction for optimizing the cycle time of the entire line.

[0007] Preferably, the unified equipment status classification and organization naming convention in S1 provides a unified standard for subsequent joint determination by multiple organizations, including: Establish a correct statistical logic for upstream and downstream waiting times: Equipment status classification: A single piece of equipment is divided into four statuses, including waiting for upstream: 1, waiting for downstream: 2, abnormal stop: 3, normal operation: 4; Organization naming convention: Number the organizations within a single piece of equipment. For the organizations within machine A, they are sequentially named A1, A2, ..., An, where n is the number of organizations. A1 is the organization closest to the upstream side, and An is the organization closest to the downstream side.

[0008] Preferably, in S2, based on the multi-agency joint judgment rule, the upstream waiting time, downstream waiting time, and abnormal stop time of a single device are calculated separately, including: A joint decision-making rule for multiple mechanisms is established based on the joint triggering timing logic of multiple mechanisms. For machine A: 1) The upstream waiting time T1 of machine A is only started when the two mechanisms inside machine A that are closest to the upstream side are simultaneously in the waiting state, i.e., A1&&A2=1. 2) The downstream waiting time T2 of machine A is only started when the two mechanisms inside machine A that are closest to the downstream side are simultaneously in the waiting state, i.e., A(n-1)&&An=2. 3) The abnormal stop time T3 of machine A is only counted when all mechanisms inside machine A are simultaneously in an abnormal stop state, i.e., A1&&A2&&…&&An=3.

[0009] Preferably, S3 involves calculating the time utilization rate and actual cycle time of a single device and the entire production line based on statistical time calculations, including: Using the upstream waiting time T1, downstream waiting time T2, and abnormal stop time T3 of machine A obtained through statistics, and after eliminating invalid waiting and abnormal time consumption, the time utilization rate of machine A per hour is calculated using the following formula. : ; The time utilization rate of the entire line per hour is calculated using the following formula. : ; in, , , These are the total upstream waiting time, total downstream waiting time, and total abnormal stop time for all machines in the entire line, respectively. The actual cycle time TT of machine A is calculated using the following formula. A : ; in, This represents the hourly production capacity of machine A. The actual cycle time TT of the entire line is calculated using the following formula. total : ; in, This represents the hourly production capacity of the entire production line.

[0010] Preferably, in step S4, by comparing the actual cycle times of each device, the bottleneck device of the entire production line is identified, and the direction for optimizing the cycle time of the entire line is determined, including: A horizontal comparison of the actual cycle times of each piece of equipment was conducted, and the equipment with the longest actual cycle time was identified as the bottleneck equipment of the entire production line. This equipment is the core link that restricts the overall production capacity of the line. By combining the upstream and downstream waiting times of each piece of equipment, we can further analyze the reasons for production bottlenecks, such as insufficient upstream supply or downstream blockage, determine the direction for optimizing the overall production line cycle time, and formulate an overall production line cycle time optimization strategy.

[0011] (III) Beneficial Effects Compared with existing technologies, the method for optimizing the cycle time of a multi-mechanism equipment line provided by this invention can accurately count the upstream waiting time, downstream waiting time, and abnormal stop time of each equipment based on the joint judgment rules of multiple mechanisms. By comparing the calculated actual cycle time of each equipment, the bottleneck equipment of the entire production line can be directly identified (the bottleneck equipment can be identified by comparing and determining it every day, because the bottleneck equipment is not fixed, and improving one bottleneck equipment may make other equipment the new bottleneck equipment). This allows resources and manpower to be concentrated for improvement, and can better optimize the cycle time of the multi-mechanism equipment line compared with traditional methods. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0013] Figure 1 This is a schematic diagram of the process of the present invention. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0015] The following describes the specific process of the line cycle optimization method for multi-mechanism equipment provided by this invention, using a concrete example (e.g.) Figure 1 (as shown) and technical effects.

[0016] S1. Standardize equipment status classification and organization naming conventions to provide a unified standard for subsequent joint determinations by multiple organizations, including: Establish a correct statistical logic for upstream and downstream waiting times: Equipment status classification: A single piece of equipment is divided into four statuses, including waiting for upstream: 1, waiting for downstream: 2, abnormal stop: 3, normal operation: 4; Mechanism naming convention: Number the mechanisms inside a single machine (such as image alignment mechanism, material handling mechanism, tray changing and holding mechanism, etc.). For the mechanisms inside machine A, they are numbered A1, A2, ..., An, where n is the number of mechanisms, A1 is the mechanism closer to the upstream side, and An is the mechanism closer to the downstream side.

[0017] S2. Based on the joint judgment rules of multiple institutions, calculate the upstream waiting time, downstream waiting time, and abnormal stop time of a single device, including: A joint decision-making rule for multiple mechanisms is established based on the joint triggering timing logic of multiple mechanisms. For machine A: 1) The upstream waiting time T1 of machine A is only started when the two mechanisms inside machine A that are closest to the upstream side are simultaneously in the waiting state, i.e., A1&&A2=1. 2) The downstream waiting time T2 of machine A is only started when the two mechanisms inside machine A that are closest to the downstream side are simultaneously in the waiting state, i.e., A(n-1)&&An=2. 3) The abnormal stop time T3 of machine A is only counted when all mechanisms inside machine A are simultaneously in an abnormal stop state, i.e., A1&&A2&&…&&An=3.

[0018] S3. Calculate the time utilization rate and actual cycle time of a single device and the entire production line based on statistical time calculations, including: Using the upstream waiting time T1, downstream waiting time T2, and abnormal stop time T3 of machine A obtained through statistics, and after eliminating invalid waiting and abnormal time consumption, the time utilization rate of machine A per hour is calculated using the following formula. : ; The time utilization rate of the entire line per hour is calculated using the following formula. : ; in, , , These are the total upstream waiting time, total downstream waiting time, and total abnormal stop time for all machines in the entire line, respectively. The actual cycle time TT of machine A is calculated using the following formula. A : ; in, This represents the hourly production capacity of machine A. The actual cycle time TT of the entire line is calculated using the following formula. total : ; in, This represents the hourly production capacity of the entire production line.

[0019] S4. By comparing the actual cycle times of each device, identify the bottleneck devices in the entire production line and determine the direction for optimizing the overall cycle time, including: A horizontal comparison of the actual cycle times of each piece of equipment was conducted, and the equipment with the longest actual cycle time was identified as the bottleneck equipment of the entire production line. This equipment is the core link that restricts the overall production capacity of the line. By combining the upstream and downstream waiting times of each piece of equipment, we can further analyze the reasons for production bottlenecks, such as insufficient upstream supply or downstream blockage, determine the direction for optimizing the overall production line cycle time, and formulate an overall production line cycle time optimization strategy.

[0020] In the technical solution of this application, for machine A, the upstream waiting time T1, downstream waiting time T2, abnormal stop time T3, and hourly production capacity are statistically analyzed. And the calculated actual beat time TT A This can be recorded in Table 1: Table 1 Equipment Data Recording Table

[0021] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for optimizing the cycle time of a multi-mechanism equipment production line, characterized in that: Includes the following steps: S1. Standardize equipment status classification and organization naming conventions to provide a unified standard for subsequent joint judgment by multiple organizations; S2. Based on the joint judgment rules of multiple institutions, the upstream waiting time, downstream waiting time, and abnormal stop time of a single device are calculated separately. S3. Calculate the time utilization rate and actual cycle time of a single device and the entire line based on statistical time calculations; S4. By comparing the actual cycle time of each device, identify the bottleneck device of the entire production line and determine the direction for optimizing the cycle time of the entire line.

2. The method for optimizing the cycle time of a multi-mechanism equipment production line according to claim 1, characterized in that: The unified equipment status classification and organization naming conventions in S1 provide a unified standard for subsequent joint determinations by multiple organizations, including: Establish a correct statistical logic for upstream and downstream waiting times: Equipment status classification: A single piece of equipment is divided into four statuses, including waiting for upstream: 1, waiting for downstream: 2, abnormal stop: 3, normal operation: 4; Organization naming convention: Number the organizations within a single piece of equipment. For the organizations within machine A, they are sequentially named A1, A2, ..., An, where n is the number of organizations. A1 is the organization closest to the upstream side, and An is the organization closest to the downstream side.

3. The method for optimizing the cycle time of a multi-mechanism equipment production line according to claim 2, characterized in that: S2 uses a multi-agency joint judgment rule to separately calculate the upstream waiting time, downstream waiting time, and abnormal stop time of a single device, including: A joint decision-making rule for multiple mechanisms is established based on the joint triggering timing logic of multiple mechanisms. For machine A: 1) The upstream waiting time T1 of machine A is only started when the two mechanisms inside machine A that are closest to the upstream side are simultaneously in the waiting state, i.e., A1&&A2=1. 2) The downstream waiting time T2 of machine A is only started when the two mechanisms inside machine A that are closest to the downstream side are simultaneously in the waiting state, i.e., A(n-1)&&An=2. 3) The abnormal stop time T3 of machine A is only counted when all mechanisms inside machine A are simultaneously in an abnormal stop state, i.e., A1&&A2&&…&&An=3.

4. The method for optimizing the cycle time of a multi-mechanism equipment line according to claim 3, characterized in that: S3 uses statistical time calculations to determine the time utilization rate and actual cycle time of individual devices and the entire production line, including: Using the upstream waiting time T1, downstream waiting time T2, and abnormal stop time T3 of machine A obtained through statistics, and after eliminating invalid waiting and abnormal time consumption, the time utilization rate of machine A per hour is calculated using the following formula. : ； The time utilization rate of the entire line per hour is calculated using the following formula. : ； in, , , These are the total upstream waiting time, total downstream waiting time, and total abnormal stop time for all machines in the entire line, respectively. The actual cycle time TT of machine A is calculated using the following formula. A : ； in, This represents the hourly production capacity of machine A. The actual cycle time TT of the entire line is calculated using the following formula. total : ； in, This represents the hourly production capacity of the entire production line.

5. The method for optimizing the cycle time of a multi-mechanism equipment line according to claim 4, characterized in that: In S4, by comparing the actual cycle times of each device, the bottleneck devices of the entire production line are identified, and the direction for optimizing the cycle time of the entire line is determined, including: A horizontal comparison of the actual cycle times of each piece of equipment was conducted, and the equipment with the longest actual cycle time was identified as the bottleneck equipment of the entire production line. This equipment is the core link that restricts the overall production capacity of the line. By combining the upstream and downstream waiting times of each piece of equipment, we can further analyze the reasons for production bottlenecks, such as insufficient upstream supply or downstream blockage, determine the direction for optimizing the overall production line cycle time, and formulate an overall production line cycle time optimization strategy.

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