A method for automatic logistics of in-plant bolts and a logistics process layout method

Abstract

The application discloses a kind of factory bolt automation logistics method and logistics process layout method, belong to factory logistics technical field, including, S1, bolt is classified, divided into A class bolt, B class bolt and C class bolt;S11, the classification evaluation score of bolt is calculated;S12, according to bolt type determination rule is classified;S2, according to the different types of bolt, select corresponding logistics mode;For A class bolt, adopt logistics mode one: pull type logistics mode according to demand;For B class bolt, adopt logistics mode two: replenishment pull type logistics mode, based on replenishment type distribution, according to whether the quantity of line edge bolt surplus reaches safety stock, system automatically triggers distribution task;For C class bolt, adopt logistics mode three: push type logistics mode.The application has the advantages that: adopt push-pull combined logistics mode, solve the problem of warehousing pressure and distribution not timely.

Description

Technical Field

[0001] This invention relates to the field of in-plant logistics technology, specifically to an automated in-plant bolt logistics method and logistics process layout method. Background Technology

[0002] Bolts are a widely used fastening component in factories. On the one hand, the large variety of specifications and models, along with significant differences between different machine types, places high demands on the warehousing and management of materials within the factory. On the other hand, bolts are used at numerous workstations during assembly, with varying usage quantities, requiring timely delivery of materials according to production rhythm requirements. This presents challenges such as high management pressure and cumbersome delivery processes.

[0003] Chinese patent application CN119329964A proposes an intelligent distribution method for standard parts in factories. This method integrates standard parts warehouses, assembly line side shelves, and line-side distribution into an intelligent distribution line that meets production rhythm. Production demand drives warehouse material distribution, achieving batch processing, intelligence, timeliness, and automation. Simultaneously, the work area is concentrated in the standard parts warehouse, resulting in a small activity range, high work efficiency, and improved issues such as misplaced standard parts and untimely delivery on the production floor.

[0004] This technical solution also has shortcomings: 1. It does not track the usage of bolts of various specifications, which can easily lead to high warehousing pressure or insufficient warehousing when materials are retrieved. 2. Using only a pull-based logistics model inevitably results in untimely material delivery. Summary of the Invention

[0005] The present invention aims to solve the technical problems mentioned in the background section above. The first aspect of this application provides an automated logistics method for bolts within a factory, which sets classification rules for bolts, matches logistics modes based on bolt types, and adopts a push-pull combined logistics mode to solve the problems of warehousing pressure and untimely delivery.

[0006] The second aspect of this application provides a logistics process layout method that covers key processes such as inbound, warehousing, outbound sorting, gluing, and distribution. Combined with the logistics method provided in the first aspect, it enables full automation and unmanned operation of the logistics process.

[0007] According to the above-mentioned objectives of the present invention, the technical solution provided by the first aspect of the present invention is: an automated logistics method for bolts within a factory, comprising the following steps:

[0008] S1. Classify bolts into Class A bolts, Class B bolts, and Class C bolts;

[0009] S11. Calculate the classification evaluation score of the bolts;

[0010] S12. Classify according to the bolt type determination rules;

[0011] S2. Select the appropriate logistics mode according to the different types of bolts;

[0012] For Class A bolts, logistics mode one is adopted: the on-demand pull logistics mode, which involves assembling bolts into pallets according to production order requirements and then delivering them to the production line.

[0013] For Class B bolts, logistics mode two is adopted: replenishment pull logistics mode. Based on replenishment distribution, the system automatically triggers the delivery task according to whether the quantity of leftover bolts at the line reaches the safety stock.

[0014] For Class C bolts, logistics mode three is adopted: push logistics mode. A line-side supermarket is set up next to the assembly line, multiple workstations share materials, the system sets the replenishment cycle and automatically triggers the replenishment task.

[0015] Furthermore,

[0016] S11. Calculate the classification evaluation score of the bolts. The calculation method is as follows:

[0017] N, P, L, and D represent the bolt usage quantity, price, length, and diameter at the workstation, respectively. F(N), F(P), F(L), and F(D) represent the scores of the above influencing factors, respectively, and W(N), W(P), W(L), and W(D) represent the weights of each influencing factor.

[0018] Obtain the usage N of bolt i at the workstation. i Price P i Length L i Diameter D i Total number of bolts used at the workstation (N) num The highest price P for all bolts of this model max Maximum length L max Maximum diameter D max ;

[0019] Calculate the scores for each factor of bolt i:

[0020] F i (N)=N i / N num *100;

[0021] F i (P)=P i / P max *100;

[0022] F i (L)=L i / L max *100;

[0023] F i(D)=D i / D max *100;

[0024] Calculate the total score F for bolt i, F=W i (N)*F i (N)+W i (P)*F i (P)+W i (L)*F i (L)+W i (D)*F i (D), where W i (N), W i (P), W i (L), W i (D) represents the corresponding weight.

[0025] Furthermore,

[0026] S12. Classify according to the bolt type determination rules;

[0027] In the judgment rules, the weight W for bolt usage is... i (N) is 40%, W i (P), W i (L), W i The sum of (D) is 60%, and W i (L)+W i (D) sum ≤ 10%;

[0028] Set the total score threshold F T1 and F T2 Bolts are classified according to their total score F:

[0029] When F≤F T1 The bolt type is A;

[0030] When F T1 <F≤F T2 The bolt type is B;

[0031] When F T2 <F, Bolt type is C.

[0032] The technical solution provided by the second aspect of the present invention is: a logistics process layout method for implementing the in-plant bolt automated logistics method provided by the first aspect, including a storage area, an inbound area, a bolt outbound area, a bolt sorting area, a bolt gluing area, a conveyor line, and an automatic docking area;

[0033] One side of the storage area is divided into an inbound area, a bolt outbound area, and a bolt sorting area;

[0034] One side of the conveyor line has a bolt outbound area, a bolt sorting area, and a bolt gluing area, and the end of the conveyor line has an automatic docking area.

[0035] The receiving area is used to receive and bind the information of bolts that have passed inspection, and the system schedules warehouse robots to transport the bolts into the warehouse;

[0036] The bolt outbound area is used for the automated outbound of Class B and Class C bolts, where warehouse robots transport the boxes to the conveyor line according to system tasks;

[0037] The bolt sorting area is used for the automated sorting and outbound processing of Class A bolts. It includes a first roller conveyor located upstream of the conveyor line and a second roller conveyor located downstream of the conveyor line. The warehouse robot transports the boxes containing Class A bolts to the first roller conveyor line. After the sorting robot grabs the bolts according to the order quantity and puts them into the boxes on the second roller conveyor line, the second roller conveyor line transfers the sorted boxes to the conveyor line.

[0038] The bolt gluing area is used for automated gluing of Class A bolts. At the entrance of the conveyor line into this area, there is a bidirectional roller conveyor and a sensor. The sensor is used to detect the type of bolt in the material box and determine whether gluing is required. When gluing is required, the bidirectional roller conveyor turns the material box to the U-shaped roller conveyor in the gluing area. After the gluing robot completes the gluing, the material box returns to the conveyor line via the U-shaped roller conveyor. Otherwise, the material box passes directly through.

[0039] The automatic docking area is equipped with sensors to detect the material boxes that have reached the end of the conveyor line and trigger a handling task. The system then dispatches automated handling equipment to deliver the material boxes to the designated points on the side of the line.

[0040] Furthermore, in the bolt sorting area, the first roller line adopts a double-layer structure. After sorting, the empty boxes are transferred from the bottom layer of the first roller line to the beginning of the line, where they are transported back to the warehouse by the warehouse robot.

[0041] Furthermore, the glue-applying robot in the bolt glue-applying area automatically matches and executes the corresponding glue-applying process based on the specifications and model of the bolt.

[0042] The advantages of this invention compared to existing technologies are as follows: 1. It designs a bolt classification method and judgment rules, which can effectively guide the classification of bolts in the factory under discrete manufacturing mode, thereby realizing customized design of in-factory logistics operation mode for different types of bolts; 2. It designs different logistics modes for three types of bolts, eliminating the need for warehousing buffer areas between processes, saving warehousing area and labor costs, and enabling fully automated warehousing and distribution, reducing labor intensity; 3. It designs an automated in-factory process layout for bolts covering key processes such as receiving, warehousing, outbound sorting, gluing, and distribution, realizing full automation and unmanned operation of the logistics process.

[0043] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of a logistics model according to an embodiment of the present invention;

[0045] Figure 2 This is a schematic diagram of the logistics mode two process according to an embodiment of the present invention;

[0046] Figure 3 This is a schematic diagram of the three-process logistics model according to an embodiment of the present invention;

[0047] Figure 4 This is a schematic diagram of the logistics process layout according to an embodiment of the present invention;

[0048] Figure 5 This is a schematic diagram of the bolt sorting area in the logistics process layout of an embodiment of the present invention;

[0049] Figure 6 This is a schematic diagram of the bolt gluing area in the logistics process layout of an embodiment of the present invention. Detailed Implementation

[0050] The present invention will now be described in further detail.

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0052] Firstly,

[0053] This embodiment provides an automated logistics method for bolts within a factory, including bolt sorting and distribution methods, with the following steps:

[0054] S1. Classify the bolts;

[0055] S11. Calculate the classification evaluation score of the bolts;

[0056] N, P, L, and D represent the station usage quantity, price, length, and diameter of bolts, respectively. F(N), F(P), F(L), and F(D) represent the scores of these influencing factors, respectively, and W(N), W(P), W(L), and W(D) represent the weights of each influencing factor. When classifying bolts, the system obtains the station usage quantity N for any bolt i from the PFEP data. i Price P i Length L i and diameter D iIt can also obtain the total number of bolts N used at the workstation. num And the highest price P for all bolts of this model. max Maximum length L max Maximum diameter D max Therefore, the station usage, price, length, and diameter scores for bolt i can be calculated as Fi(N), Fi(P), Fi(L), and Fi(D), respectively, as shown in the following formula:

[0057] F i (N)=N i / N num *100;

[0058] F i (P)=P i / P max *100;

[0059] F i (L)=L i / L max *100;

[0060] F i (D)=D i / D max *100;

[0061] Taking into account the weighting coefficients of each factor, the final total score F for bolt i can be obtained as follows:

[0062] F=W i (N)*F i (N)+W i (P)*F i (P)+W i (L)*F i (L)+W i (D)*F i (D);

[0063] S12. Classify according to the bolt type determination rules;

[0064] When bolts have the same strength grade, their price is directly proportional to their length and diameter; that is, the longer and larger the bolt, the higher its price. Therefore, when assigning weights to these three factors, the weights of bolt length and diameter are set to the smaller values. Furthermore, bolt usage and price are both key factors in determining bolt type, with price having a greater impact. The determination rule proposed in this application uses a weighting of bolt usage W. i (N) is 40%, and the weights of the other three factors are W. i (P), W i (L), W iThe sum of (D) is 60%, and W i (L)+W i The sum of (D) should be ≤10%.

[0065] Based on the above rules, the total score for each type of bolt at all workstations is calculated. The classification of bolt types should comprehensively consider all proposed logistics model types, thereby determining the total score threshold F for bolt type classification. T The size and quantity of.

[0066] When F≤F T1 Bolt type A, using logistics mode one;

[0067] When F T1 <F≤F T2 The bolt type is B, and logistics mode two is adopted;

[0068] When F T2 <F, Bolt type is C, logistics mode three is adopted;

[0069] S2. Select the logistics mode according to the different types of bolts; the logistics mode is as follows: Figure 1 Logistics Model Two Figure 2 As shown, logistics mode three Figure 3 As shown;

[0070] Logistics Model 1: This model primarily targets bolts with a high overall score (F). According to bolt classification rules, these bolts are generally more expensive. Therefore, this model employs a demand-driven, pull-based in-plant logistics approach, assembling bolts according to production orders and then delivering them to the production line.

[0071] Logistics Model Two: For bolts that are low-priced and used in large quantities, a replenishment-driven in-plant logistics model is adopted. This model is based on a replenishment-based delivery method. The system automatically triggers a delivery task and delivers the bolts to the production line based on whether the quantity of leftover bolts at the production line has reached the safety stock level.

[0072] Logistics Mode 3: For bolts with low price and low usage, a push-type logistics mode is adopted. A line supermarket is set up next to the assembly line, and multiple workstations share materials and place them in the supermarket. At the same time, the system sets the replenishment cycle and automatically triggers the replenishment task.

[0073] Secondly, this embodiment provides a logistics process layout method, such as... Figure 4 As shown, the facility includes a storage area, an inbound area, a bolt outbound area, a bolt sorting area, a bolt gluing area, a conveyor line, and an automatic docking area. The storage area has an inbound area, a bolt outbound area, and a bolt sorting area on one side; the conveyor line has a bolt outbound area, a bolt sorting area, and a bolt gluing area on one side, and an automatic docking area at the end of the conveyor line.

[0074] The operation process is as follows:

[0075] (1) The supplier delivers the bolts to the factory and after they pass the inspection, they are transferred to the warehouse area using automated equipment. After scanning and information binding, the system automatically dispatches the warehouse robot to move the bolts into the warehouse and place them in the designated storage location.

[0076] (2) The bolt outbound area is mainly used for the automated outbound of Class B and Class C bolts. According to the handling task triggered by the system, the warehouse robot will carry the material box out of the warehouse and place it on the conveyor line.

[0077] (3) Bolt sorting area, such as Figure 5 As shown, this system is primarily used for the automated sorting and outbound processing of Class A bolts. The left roller conveyor (upstream of the conveyor line) employs a double-layer structure. Based on bolt delivery requirements, a warehouse robot transports the bolt storage boxes to the left roller conveyor. The boxes are then transferred to the sorting station, automatically triggering the robot's sorting operation. The robot picks bolts from the boxes according to the required sorting quantity and places them in the boxes on the right roller conveyor (downstream of the conveyor line). After sorting, the left roller conveyor transfers the boxes to the bottom layer, where they are then transferred to the beginning of the line by the bottom roller conveyor, triggering the warehouse robot to move the boxes into the warehouse. Simultaneously, after sorting, the right roller conveyor transfers the sorted boxes (containing the sorted bolts) to the conveyor line, thus completing the sorting operation.

[0078] (4) The bolt gluing area is mainly used for automated gluing of Class A bolts. The detailed layout is as follows: Figure 6 As shown, bidirectional roller conveyors are installed at the inlet and outlet of the bolt gluing area. When the material box is transferred to the bidirectional roller conveyor along the conveyor line, the sensor automatically detects the type of bolt in the material box and determines whether the bolt needs to be glued. When gluing is required, the bidirectional roller conveyor automatically turns the material box to the U-shaped roller conveyor in the gluing area; otherwise, the material box continues to move forward with the conveyor line to the automatic docking area.

[0079] (5) When the material box is transferred to the automatic gluing station by the roller conveyor, the robot automatically grabs the bolt and automatically matches the gluing process according to the specifications of the bolt. After the gluing is completed, the bolt is put back into the material box and transferred by the U-shaped roller conveyor, and finally enters the conveyor line.

[0080] (6) The automatic docking zone is used for automatic docking of automated delivery equipment with the conveyor line. When the material box is delivered to the end of the conveyor line, the sensor detects the material box and triggers the handling task. After receiving the task, the system dispatches the automated handling equipment and delivers the material to the corresponding point on the line.

[0081] This embodiment provides a bolt classification method for discrete manufacturing. Addressing the characteristics of discrete manufacturing, such as the variety of bolt types and significant differences in usage, a bolt classification method and judgment rules are designed by comprehensively considering factors such as bolt price, usage, size, and weight. Furthermore, a push-pull logistics model combining different bolt types is employed. Based on bolt type, a replenishment-type push logistics model and a pallet-type pull logistics model are designed. An automated process layout within the bolt factory is also provided. Covering key processes such as receiving, warehousing, outbound sorting, gluing, and distribution, a process layout covering the entire business process is designed based on the principles of automation and unmanned operation.

[0082] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An automated logistics method for bolts within a factory, characterized in that, Includes the following steps: S1. Classify bolts into Class A bolts, Class B bolts, and Class C bolts; S11. Calculate the classification evaluation score of the bolts; S12. Classify according to the bolt type determination rules; S2. Select the appropriate logistics mode according to the different types of bolts; For Class A bolts, logistics mode one is adopted: the on-demand pull logistics mode, which involves assembling bolts into pallets according to production order requirements and then delivering them to the production line. For Class B bolts, logistics mode two is adopted: replenishment pull logistics mode. Based on replenishment delivery, the system automatically triggers delivery tasks according to whether the quantity of leftover bolts at the line reaches the safety stock. For Class C bolts, logistics mode three is adopted: push logistics mode. A line-side supermarket is set up next to the assembly line, multiple workstations share materials, the system sets the replenishment cycle and automatically triggers the replenishment task.

2. The automated logistics method for bolts within a factory according to claim 1, characterized in that, S11. Calculate the classification evaluation score of the bolts. The calculation method is as follows: N, P, L, and D represent the bolt usage quantity, price, length, and diameter at the workstation, respectively. F(N), F(P), F(L), and F(D) represent the scores of the above influencing factors, respectively, and W(N), W(P), W(L), and W(D) represent the weights of each influencing factor. Obtain the usage N of bolt i at the workstation. i Price P i Length L i Diameter D i Total number of bolts used at the workstation (N) num The highest price P for all bolts of this model max Maximum length L max Maximum diameter D max ; Calculate the scores for each factor of bolt i: F i (N)=N i / N num *100; F i (P)=P i / P max *100; F i (L)=L i / L max *100; F i (D)=D i / D max *100; Calculate the total score F for bolt i, F=W i (N)*F i (N)+W i (P)*F i (P)+W i (L)*F i (L)+W i (D)*F i (D), where W i (N), W i (P), W i (L), W i (D) represents the corresponding weight.

3. The automated logistics method for bolts within a factory according to claim 1, characterized in that, S12. Classify according to the bolt type determination rules; In the aforementioned judgment rule, the weight W for bolt usage quantity is... i (N) is 40%, W i (P), W i (L), W i The sum of (D) is 60%, and W i (L)+W i (D) sum ≤ 10%; Set the total score threshold F T1 and F T2 Bolts are classified according to their total score F: When F≤F T1 The bolt type is A; When F T1 <F≤F T2 The bolt type is B; When F T2 <F, Bolt type is C.

4. A logistics process layout method for implementing the automated logistics method for bolts within a factory as described in any one of claims 1-3, characterized in that, The layout includes a storage area, an inbound area, a bolt outbound area, a bolt sorting area, a bolt gluing area, a conveyor line, and an automatic docking area; One side of the storage area is provided with the inbound area, the bolt outbound area and the bolt sorting area; One side of the conveyor line is provided with the bolt outbound area, bolt sorting area, and bolt gluing area, and the end of the conveyor line is provided with the automatic docking area; The receiving area is used to receive and bind the information of bolts that have passed inspection, and the system schedules warehouse robots to transport the bolts into the warehouse; The bolt outbound area is used for the automated outbound of Class B and Class C bolts, where warehouse robots transport the boxes to the conveyor line according to system tasks; The bolt sorting area is used for the automated sorting and outbound processing of Class A bolts. It includes a first roller conveyor located upstream of the conveyor line and a second roller conveyor located downstream of the conveyor line. The warehouse robot transports the boxes containing Class A bolts to the first roller conveyor line. After the sorting robot grabs the bolts according to the order quantity and puts them into the boxes on the second roller conveyor line, the second roller conveyor line transfers the sorted boxes to the conveyor line. The bolt gluing area is used for automated gluing of Class A bolts. A bidirectional roller conveyor and a sensor are installed at the entrance of the conveyor line into this area. The sensor is used to detect the type of bolt in the hopper and determine whether gluing is required. When gluing is required, the bidirectional roller conveyor turns the hopper to the U-shaped roller conveyor in the gluing area. After the gluing robot completes the gluing, the hopper returns to the conveyor line via the U-shaped roller conveyor. Otherwise, the hopper passes directly through. The automatic docking area is equipped with sensors to detect the material box that has reached the end of the conveyor line and trigger a handling task. The system then dispatches automated handling equipment to deliver the material box to a designated point on the side of the line.

5. The logistics process layout method according to claim 4, characterized in that, In the bolt sorting area, the first roller line adopts a double-layer structure. After sorting, the empty boxes are transferred to the end of the line via the bottom layer of the first roller line and then transported back to the warehouse by the warehouse robot.

6. The logistics process layout method according to claim 4 or 5, characterized in that, The glue-applying robot in the bolt glue-applying area automatically matches and executes the corresponding glue-applying process according to the specifications and model of the bolt.

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