Method for generating a pool of candidate configurations of a non-standard modular assembly line logistics

Abstract

The application discloses a kind of non-standard modular assembly production line logistics configuration candidate pool generation method, belong to non-standard automation assembly production line design field.This method includes: the work-in-process transfer requirement of solidification station is converted into the logistics requirement triplets containing kinematics requirement, physical interface constraint and inlet / outlet material direction constraint;All logistics stations are uniformly converted into kinematics characteristics containing station type, degree of freedom, loading / unloading direction and buffer identification, and first connection rule of solidification station and logistics station and second connection rule between logistics stations are established;Topology mode set describing the serial and / or parallel connection skeleton of transfer station and buffer station is defined.The application realizes the end-to-end automation generation from logistics requirement to kinematically feasible, interface compatible logistics configuration candidate pool, breaks through the limitation of experience-driven design, and significantly improves the diversity and completeness of configuration scheme.

Description

Technical Field

[0001] This invention relates to the field of planning and design technology for non-standard automated assembly lines, and specifically to a method for generating a candidate pool of logistics configurations in a non-standard modular assembly line. Background Technology

[0002] In non-standard modular assembly lines, workstations are the basic production units, typically categorized as processing workstations, inspection workstations, transfer workstations, and buffer workstations. Processing and inspection workstations are constrained by mature process chains, resulting in relatively fixed structures, often referred to as fixed workstations. Transfer and buffer workstations, on the other hand, handle the transport and temporary storage of work-in-process, exhibiting highly diverse structures; their combination is known as the logistics configuration. The design of the logistics configuration is a key variable in the overall design of a non-standard production line, directly determining its flexibility and operational efficiency.

[0003] Currently, logistics configuration design relies heavily on the experience and intuition of senior engineers, which has significant shortcomings. On the one hand, design requirements lack formal representation, and the needs for transporting work-in-process cannot be standardized, making it difficult to support the automation and standardization of the design. On the other hand, there is a lack of a systematic configuration generation mechanism. Experience-driven designs often focus only on functional component selection or interface matching, failing to effectively incorporate rigid body motion constraints in the spatial transport of work-in-process. This can lead to early-generation logistics configurations that may have kinematic infeasibility or mechanical interface incompatibility issues. Furthermore, influenced by design inertia, manual conceptualization cannot exhaustively list all feasible configurations, resulting in insufficient diversity and objectivity in the solutions.

[0004] Therefore, there is an urgent need for a method that can automatically generate a pool of candidate logistics configurations that meet the requirements of kinematic feasibility and interface compatibility based on logistics needs, in order to solve the above-mentioned problems in the existing technology. Summary of the Invention

[0005] The purpose of this invention is to provide a method for generating a candidate pool of logistics configurations for non-standard modular assembly production lines. By establishing formal representations of design requirements and logistics workstations, defining basic configuration topology patterns, and automatically synthesizing configuration instances based on rules and constraints, the method achieves standardized, objective, and complete generation of the configuration candidate pool.

[0006] To achieve the above objectives, the present invention provides a method for generating a candidate pool of logistics configurations for non-standard modular assembly production lines, the method comprising the following steps: S1. Convert the transfer requirements of work-in-process at the solidified workstation into a logistics requirement triplet, wherein the logistics requirement triplet includes kinematic requirements, physical interface constraints, and material in / out direction constraints. S2. Convert all logistics workstations into corresponding kinematic features, including workstation type, degrees of freedom, loading and unloading direction, and buffer identifier; at the same time, establish the first workstation connection rules between the fixed workstations and the logistics workstations, as well as the second workstation connection rules for the logistics workstations within the logistics configuration. S3. Define a set of topology patterns for the logistics configuration, wherein the set of topology patterns is used to describe the serial and / or parallel connection skeleton of the transfer station and the buffer station in the logistics configuration. S4. Obtain logistics design requirements. Based on the logistics design requirements, automatically traverse and generate all compliant logistics configurations according to the logistics requirement triplet, the first workstation connection rule, the second workstation connection rule, and the topology pattern set, and summarize them to obtain a logistics configuration candidate pool.

[0007] Preferably, the kinematic requirements satisfy the following conditions: ; in, This indicates the kinematic requirements. Indicates the first i A spatial vector of work-in-process, d represents the position vector.

[0008] Preferably, the physical interface constraints satisfy the following conditions:

[0009] in, This indicates the physical interface constraints. Indicates the front end of the logistics configuration Output interface type of each curing station Indicates the back end of the logistics configuration Input interface type for each solidified workstation; Indicates the power source. This indicates that there is no power source.

[0010] Preferably, the feed / discharge direction constraint satisfies the following conditions:

[0011] in, This indicates the constraint on the feed / outfeed direction. It represents the set of six principal directions in the world coordinate system.

[0012] Preferably, the workstation type includes invasive type, active-assisted type and passive-assisted type; the invasive type is used to actively and independently handle the loading and unloading of the work-in-process, the active-assisted type is used to provide power to assist upstream and downstream workstations in completing the loading and unloading of the work-in-process, and the passive-assisted type is used as a carrier of the work-in-process, whose loading and unloading is entirely dependent on upstream and downstream workstations.

[0013] Preferably, the first workstation connection rules include: When the interface of the solidification station is a power source type, the logistics station directly connected to it is either an intrusive type or an active-assisted type. When the interface of the solidification station is of the non-power source type, the logistics station directly connected to it is of the intrusive type. The solidification station is not directly connected to the passive auxiliary type logistics station.

[0014] Preferably, the connection rule for the second workstation is as follows: The downstream of the invasive logistics workstation can be either the active-assisted or the passive-assisted logistics workstation. The downstream of the active-assisted logistics workstation can be either the intrusive or the active-assisted logistics workstation. The downstream of the passive auxiliary type logistics workstation can only be the intrusive type logistics workstation.

[0015] Preferably, the topology pattern set includes head cache type, tail cache type, middle cache type, and selection cache type; the logistics workstation includes cache workstation and transfer workstation; The head buffer type belongs to a serial buffer structure. Its topology features a buffer station connected in series with a group of transfer stations. It is only compatible with an upstream solidification station having a power source type interface and a downstream solidification station having a power source type interface or a non-power source type interface. The tail buffer type belongs to a serial buffer structure, and its topology features a group of transfer stations connected in series with a buffer station; it is only compatible with the upstream solidification station having a power source type interface or a non-power source type interface, and the downstream solidification station having a power source type interface. The intermediate buffer type belongs to the serial buffer structure, and its topology features a set of transfer stations connected in series with a buffer station and then a set of transfer stations connected in series; it adapts to any combination of interfaces with or without power source type for the upstream solidification station and the downstream solidification station. The selected cache type belongs to the parallel cache structure. Its topological feature is that a group of transfer stations are connected in parallel to a cache station. The cache station only participates in workpiece temporary storage when the station is blocked. It can adapt the upstream solidification station and the downstream solidification station to any combination of interfaces with or without power source type.

[0016] Preferably, step S4 includes the following sub-steps: S41. Extract the corresponding logistics requirement triplet based on the logistics design requirements; S42. Parse the logistics demand triplet and extract the output interface type, input interface type, upstream discharge direction constraint, and downstream infeed direction constraint; S43. Separate the coincident motion axis and heterogeneous motion axis from the kinematic requirements of the logistics demand triplet; S44. Combining the output interface type, the input interface type, the cache identifier, the first workstation connection rule, and the second workstation connection rule, filter the set of legal logistics configuration topology patterns that are compatible with the current logistics design requirements; S45. Traverse each topology template in the set of legal logistics configuration topology patterns until the maximum station length of the preset logistics configuration is reached. Then, retrieve the logistics component library and generate all logistics configuration instances that meet the station connection rules. S46. Summarize all the logistics configuration instances to form and output the logistics configuration candidate pool.

[0017] Compared with existing technologies, this invention transforms the work-in-process transfer requirements of the solidification station into a logistics requirement triplet that includes kinematic requirements, physical interface constraints, and material in / out direction constraints. This achieves a formal representation of design requirements and transforms the fuzzy requirements that originally relied on human experience for interpretation into a standardized data structure that can be directly processed by algorithms, laying the foundation for automated configuration generation.

[0018] By uniformly converting all logistics workstations into kinematic features that include workstation type, degree of freedom, loading and unloading direction, and buffer identifier, and establishing fixed first-station connection rules between fixed workstations and logistics workstations, as well as second-station connection rules between logistics workstations, the mechanical compatibility of component interfaces during the generation process is ensured, and unreasonable workstation combinations are eliminated from the rule level.

[0019] By defining a set of topology patterns including head cache, tail cache, middle cache, and select cache, common serial and parallel cache structures are summarized and abstracted, giving the configuration generation process clear skeletal constraints and covering various production line layout requirements while ensuring structural rationality.

[0020] By splitting coincident and heterogeneous motion axes from kinematic requirements during the configuration generation process, and filtering legal topology patterns based on output interface type, input interface type, cache identifier, and workstation connection rules, all compliant logistics configuration instances are generated through traversal. This ensures that each configuration in the generated candidate pool meets the rigid body motion constraints of in-process space transportation, fundamentally solving the problem of missing kinematic feasibility assessment in traditional experience-driven design.

[0021] By automatically traversing all compliant logistics configurations and aggregating them into a candidate pool, the limitations of insufficient diversity caused by the inertia of manual design are overcome. It can systematically generate all potential configuration solutions that meet the constraints, providing an objective and complete option space for subsequent solution selection.

[0022] In summary, this invention achieves end-to-end automated generation from logistics requirements to configuration instances. All configurations in the generated candidate pool meet the conditions of kinematic feasibility and mechanical interface compatibility, significantly improving the efficiency and quality of non-standard modular assembly line design. Attached Figure Description

[0023] The present invention will now be described in detail with reference to the accompanying drawings. The above and other aspects of the present invention will become clearer and more readily understood through the detailed description following the accompanying drawings. In the drawings: Figure 1 This is a flowchart of the method for generating a candidate pool of non-standard modular assembly line logistics configurations provided in this embodiment of the invention. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0025] Please refer to Figure 1 This invention provides a method for generating a candidate pool of logistics configurations for non-standard modular assembly production lines, the method comprising the following steps: S1. Convert the transfer requirements of work-in-process at the solidified workstation into a logistics requirement triplet, wherein the logistics requirement triplet includes kinematic requirements, physical interface constraints, and material in / out direction constraints.

[0026] In this embodiment of the invention, the premise for generating a candidate pool of logistics configurations is to use a unified semantic representation to represent design requirements and candidate components, thereby achieving matching and further combining them into logistics configurations. This step focuses on kinematic features and physical interfaces to formally represent logistics requirements.

[0027] The posture of the workpiece is defined as:

[0028] in yes The rotation matrix satisfies and ; It is a position vector.

[0029] make and These represent the work-in-process poses at the starting and target positions, respectively, according to the logistics configuration design requirements. The kinematic requirements between these two positions are represented by relative transformations.

[0030] The relative transformation from the starting position to the target position is defined as:

[0031] matrix It captures the complete rigid body motion that the logistics configuration must perform to move the workpiece from one position to the next.

[0032] To obtain a vector value representation suitable for sports type classification, matrix logarithm is used to... Mapping to Lie algebra and through The operator extracts the spinor coordinates. An operator is an inverse mapping operation that reduces the elements of a Lie algebra in matrix form (such as an antisymmetric matrix) to their corresponding Euclidean vectors.

[0033]

[0034] in It is a rotational component. It is a translation component. In practice, the WIP pose transformation in non-standard assembly systems is physically aligned with the standard coordinate system orientation; therefore, the rotation component is constrained to... The discrete values ​​in.

[0035]

[0036] In actual manufacturing systems, the fixed workstations at both ends (front and back) of a logistics configuration do not always follow a one-to-one pattern. Many-to-one (such as parallel workstations or aggregated processes) and one-to-many (such as sorting processes) scenarios are also very common. Therefore, for a set of adjacent fixed workstations, The definition is as follows:

[0037] in, This indicates the kinematic requirements. Indicates the first iA spatial vector of work-in-process, d represents the position vector. This represents the sum of the number of curing stations at both ends minus 1. When hour, .

[0038] The work-in / output interfaces at the curing station can be categorized into two types: those with a power source (providing power for the input / output of work-in-process, denoted as A) and those without a power source (denoted as P). Different interface types have varying compatibility with logistics stations. Therefore, for a set of adjacent curing stations, Defined as:

[0039] in Indicates the front end of the logistics configuration Output interface type of the curing station Indicates the back end of the logistics configuration Input interface type for the solidification station.

[0040] Typically, the input / output interfaces of a curing station impose directional constraints on the entry and exit of work-in-process. Therefore, for a set of adjacent curing stations, Defined as:

[0041] make This represents the set of six principal directions in the world coordinate system. Where, if The first in If the direction is permitted, then Assign a value of 1, otherwise assign a value of 0.

[0042] Logistics requires comprehensive consideration , and The complete logistics demand is defined as a triple. :

[0043] S2. Convert all logistics workstations into corresponding kinematic features, including workstation type, degree of freedom, loading and unloading direction, and buffer identifier; at the same time, establish the first workstation connection rules between the fixed workstation and the logistics workstation, as well as the second workstation connection rules between the logistics workstations within the logistics configuration.

[0044] In this embodiment of the invention, in order to facilitate the use of logistics demand triples To achieve logistics workstation matching and logistics configuration generation, the kinematic characteristic information of the logistics workstations is defined as follows:

[0045] The kinematic characteristics of a logistics workstation are represented by four attributes: workstation type, degrees of freedom, loading / unloading direction, and buffer identifier. See Table 1 for details of each attribute.

[0046] Table 1: List of Logistics Workstation Attributes

[0047] The workstation types include invasive, active-assisted, and passive-assisted types; the invasive type is used to actively and independently handle the loading and unloading of the work-in-process, the active-assisted type is used to provide power to assist upstream and downstream workstations in completing the loading and unloading of the work-in-process, and the passive-assisted type is used as a carrier of the work-in-process, whose loading and unloading is entirely dependent on upstream and downstream workstations.

[0048] In this embodiment of the invention, the first workstation connection rule includes: When the interface of the solidification station is a power source type, the logistics station directly connected to it is either an intrusive type or an active-assisted type. When the interface of the solidification station is of the non-power source type, the logistics station directly connected to it is of the intrusive type. The solidification station is not directly connected to the passive auxiliary type logistics station.

[0049] The connection rules for the second workstation are as follows: The downstream of the invasive logistics workstation can be either the active-assisted or the passive-assisted logistics workstation. The downstream of the active-assisted logistics workstation can be either the intrusive or the active-assisted logistics workstation. The downstream of the passive auxiliary type logistics workstation can only be the intrusive type logistics workstation.

[0050] S3. Define a set of topology patterns for the logistics configuration, which describes the serial and / or parallel connection skeleton of transfer stations and buffer stations in the logistics configuration.

[0051] In this embodiment of the invention, the common topology patterns for caching in the production line are serial and parallel. Serial caching is characterized by the caching station being a necessary path for WIP (Work In-Process) transport. Parallel caching involves WIP entering the caching station only when downstream is blocked, and leaving the caching station when upstream is blocked. The combination of output and input interface types between two fixed stations generates four logistics demand patterns. Based on the station connection rules, four corresponding logistics configuration topology patterns are generated, where a single demand pattern may map to multiple topology patterns, which is directly determined by the station connection rules. The four logistics configuration topology patterns are head caching, tail caching, intermediate caching, and selective caching, detailed as follows: Head buffer type: The head buffer type is a serial buffer. The topology feature is that a buffer station is connected in series with a group of transfer stations. Since the buffer station is AR type (active auxiliary type), the transfer station may be I type (intrusive type) or AR type. Therefore, the head buffer type is only suitable for the case where the output interface of the upstream solidification station is A type and the input interface of the downstream solidification station is A type or P type. Tail buffer type: Tail buffer type belongs to serial buffer. Its topology is that a group of transfer stations are connected in series with a buffer station. Therefore, tail buffer type is only suitable for the case where the output interface of the upstream solidification station is type A (with input source type) or type P (without input source type), and the input interface of the downstream solidification station is type A. Intermediate buffer type: The intermediate buffer type also belongs to serial buffer. Its topology is that a set of transfer stations are connected in series with a buffer station and then connected in series with another set of transfer stations. Therefore, the intermediate buffer type is suitable for situations where the output interface of the upstream solidification station is type A or type P and the input interface of the downstream solidification station is type A or type P. Selective caching: Selective caching is a type of parallel caching. Its topology is characterized by a group of transport stations connected in parallel to a single cache station. The cache station only participates in operation when there is a blockage upstream or downstream. Under normal circumstances, only the transport station group participates in the transfer of WIP. Therefore, selective caching is suitable for situations where the output interface of the upstream solidification station is type A or type P, and the input interface of the downstream solidification station is type A or type P.

[0052] It is worth noting that when there is no buffer station, all four topology modes degenerate into the simplest topology mode, which is only one set of transfer stations. This is suitable for situations where the output interface of the upstream solidification station is type A or type P, and the input interface of the downstream solidification station is type A or type P.

[0053] S4. Obtain logistics design requirements. Based on the logistics design requirements, automatically traverse and generate all compliant logistics configurations according to the logistics requirement triplet, the first workstation connection rule, the second workstation connection rule, and the topology pattern set, and summarize them to obtain a logistics configuration candidate pool.

[0054] In this embodiment of the invention, step S4 includes the following sub-steps: S41. Extract the corresponding logistics requirement triplet based on the logistics design requirements; S42. Parse the logistics demand triplet and extract the output interface type, input interface type, upstream discharge direction constraint, and downstream infeed direction constraint; S43. Separate the coincident motion axis and heterogeneous motion axis from the kinematic requirements of the logistics demand triplet; S44. Combining the output interface type, the input interface type, the cache identifier, the first workstation connection rule, and the second workstation connection rule, filter the set of legal logistics configuration topology patterns that are compatible with the current logistics design requirements; S45. Traverse each topology template in the set of legal logistics configuration topology patterns until the maximum station length of the preset logistics configuration is reached. Then, retrieve the logistics component library and generate all logistics configuration instances that meet the station connection rules. S46. Summarize all the logistics configuration instances to form and output the logistics configuration candidate pool.

[0055] Compared with existing technologies, this invention transforms the work-in-process transfer requirements of the solidification station into a logistics requirement triplet that includes kinematic requirements, physical interface constraints, and material in / out direction constraints. This achieves a formal representation of design requirements and transforms the fuzzy requirements that originally relied on human experience for interpretation into a standardized data structure that can be directly processed by algorithms, laying the foundation for automated configuration generation.

[0056] By uniformly converting all logistics workstations into kinematic features that include workstation type, degree of freedom, loading and unloading direction, and buffer identifier, and establishing fixed first-station connection rules between fixed workstations and logistics workstations, as well as second-station connection rules between logistics workstations, the mechanical compatibility of component interfaces during the generation process is ensured, and unreasonable workstation combinations are eliminated from the rule level.

[0057] By defining a set of topology patterns including head cache, tail cache, middle cache, and select cache, common serial and parallel cache structures are summarized and abstracted, giving the configuration generation process clear skeletal constraints and covering various production line layout requirements while ensuring structural rationality.

[0058] By splitting coincident and heterogeneous motion axes from kinematic requirements during the configuration generation process, and filtering legal topology patterns based on output interface type, input interface type, cache identifier, and workstation connection rules, all compliant logistics configuration instances are generated through traversal. This ensures that each configuration in the generated candidate pool meets the rigid body motion constraints of in-process space transportation, fundamentally solving the problem of missing kinematic feasibility assessment in traditional experience-driven design.

[0059] By automatically traversing all compliant logistics configurations and aggregating them into a candidate pool, the limitations of insufficient diversity caused by the inertia of manual design are overcome. It can systematically generate all potential configuration solutions that meet the constraints, providing an objective and complete option space for subsequent solution selection.

[0060] In summary, this invention achieves end-to-end automated generation from logistics requirements to configuration instances. All configurations in the generated candidate pool meet the conditions of kinematic feasibility and mechanical interface compatibility, significantly improving the efficiency and quality of non-standard modular assembly line design.

[0061] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0062] The embodiments of the present invention have been described above with reference to the accompanying drawings. The disclosed embodiments are merely preferred embodiments of the present invention. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many equivalent changes in form without departing from the spirit and scope of the claims of the present invention, and all such changes are within the protection scope of the present invention.

Claims

1. A method for generating a candidate pool of logistics configurations for a non-standard modular assembly production line, characterized in that, The generation method includes the following steps: S1. Convert the transfer requirements of work-in-process at the solidified workstation into a logistics requirement triplet, wherein the logistics requirement triplet includes kinematic requirements, physical interface constraints, and material in / out direction constraints. S2. Convert all logistics workstations into corresponding kinematic features, including workstation type, degrees of freedom, loading and unloading direction, and buffer identifier; at the same time, establish the first workstation connection rules between the fixed workstations and the logistics workstations, as well as the second workstation connection rules for the logistics workstations within the logistics configuration. S3. Define a set of topology patterns for the logistics configuration, wherein the set of topology patterns is used to describe the serial and / or parallel connection skeleton of the transfer station and the buffer station in the logistics configuration. S4. Obtain logistics design requirements. Based on the logistics design requirements, automatically traverse and generate all compliant logistics configurations according to the logistics requirement triplet, the first workstation connection rule, the second workstation connection rule, and the topology pattern set, and summarize them to obtain a logistics configuration candidate pool.

2. The method for generating a candidate pool of non-standard modular assembly line logistics configurations as described in claim 1, characterized in that, The kinematic requirements must meet the following conditions: ； in, This indicates the kinematic requirements. Indicates the first i A spatial vector of work-in-process, d represents the position vector.

3. The method for generating a candidate pool of non-standard modular assembly line logistics configurations as described in claim 2, characterized in that, The physical interface constraints satisfy the following conditions: in, This indicates the physical interface constraints. Indicates the front end of the logistics configuration Output interface type of each curing station Indicates the back end of the logistics configuration Input interface type for each solidified workstation; Indicates the power source. This indicates that there is no power source.

4. The method for generating a candidate pool of non-standard modular assembly line logistics configurations as described in claim 3, characterized in that, The infeed / outfeed direction constraint satisfies the following conditions: in, This indicates the constraint on the feed / outfeed direction. It represents the set of six principal directions in the world coordinate system.

5. The method for generating a candidate pool of non-standard modular assembly line logistics configurations as described in claim 1, characterized in that, The workstation types include invasive, active-assisted, and passive-assisted types; the invasive type is used to actively and independently handle the loading and unloading of the work-in-process, the active-assisted type is used to provide power to assist upstream and downstream workstations in completing the loading and unloading of the work-in-process, and the passive-assisted type is used as a carrier of the work-in-process, whose loading and unloading is entirely dependent on upstream and downstream workstations.

6. The method for generating a candidate pool of non-standard modular assembly line logistics configurations as described in claim 5, characterized in that, The connection rules for the first workstation include: When the interface of the solidification station is a power source type, the logistics station directly connected to it is either an intrusive type or an active-assisted type. When the interface of the solidification station is of the non-power source type, the logistics station directly connected to it is of the intrusive type. The solidification station is not directly connected to the passive auxiliary type logistics station.

7. The method for generating a candidate pool of non-standard modular assembly line logistics configurations as described in claim 6, characterized in that, The connection rules for the second workstation are as follows: The downstream of the invasive logistics workstation can be either the active-assisted or the passive-assisted logistics workstation. The downstream of the active-assisted logistics workstation can be either the intrusive or the active-assisted logistics workstation. The downstream of the passive auxiliary type logistics workstation can only be the intrusive type logistics workstation.

8. The method for generating a candidate pool of non-standard modular assembly line logistics configurations as described in claim 1, characterized in that, The topology pattern set includes head cache type, tail cache type, middle cache type, and selection cache type; the logistics workstation includes cache workstation and transfer workstation; The head buffer type belongs to a serial buffer structure. Its topology features a buffer station connected in series with a group of transfer stations. It is only compatible with an upstream solidification station having a power source type interface and a downstream solidification station having a power source type interface or a non-power source type interface. The tail buffer type belongs to a serial buffer structure, and its topology features a group of transfer stations connected in series with a buffer station; it is only compatible with the upstream solidification station having a power source type interface or a non-power source type interface, and the downstream solidification station having a power source type interface. The intermediate buffer type belongs to the serial buffer structure, and its topology features a set of transfer stations connected in series with a buffer station and then a set of transfer stations connected in series; it adapts to any combination of interfaces with or without power source type for the upstream solidification station and the downstream solidification station. The selected cache type belongs to the parallel cache structure. Its topological feature is that a group of transfer stations are connected in parallel to a cache station. The cache station only participates in workpiece temporary storage when the station is blocked. It can adapt the upstream solidification station and the downstream solidification station to any combination of interfaces with or without power source type.

9. The method for generating a candidate pool of non-standard modular assembly line logistics configurations as described in claim 1, characterized in that, Step S4 includes the following sub-steps: S41. Extract the corresponding logistics requirement triplet based on the logistics design requirements; S42. Parse the logistics demand triplet and extract the output interface type, input interface type, upstream discharge direction constraint, and downstream infeed direction constraint; S43. Separate the coincident motion axis and heterogeneous motion axis from the kinematic requirements of the logistics demand triplet; S44. Combining the output interface type, the input interface type, the cache identifier, the first workstation connection rule, and the second workstation connection rule, filter the set of legal logistics configuration topology patterns that are compatible with the current logistics design requirements; S45. Traverse each topology template in the set of legal logistics configuration topology patterns until the maximum station length of the preset logistics configuration is reached. Then, retrieve the logistics component library and generate all logistics configuration instances that meet the station connection rules. S46. Summarize all the logistics configuration instances to form and output the logistics configuration candidate pool.

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