Double-door ring production line material conveying method based on carrying vehicle and double-door ring production line

Abstract

The invention discloses a carrier-based double-door ring production line material conveying method and a double-door ring production line. A control end controls a plurality of carriers to convey and transfer materials among workshop section equipment of the production line so as to realize production line operation. The carrier is adopted to flexibly control the production steps of the production line, and the conveying and carrying sequence is adjusted according to the step sequence of the double-door ring workpieces and the production rhythm of workshop section equipment, so that the production of the double-door ring production line is more flexible and efficient, and time is saved.

Description

Technical Field

[0001] The present application belongs to the technical field of double door ring processing, and in particular, relates to a material conveying method for a double door ring production line based on a transport vehicle and a double door ring production line. Background Art

[0002] Driven by industrial policies and market demand, new energy vehicles are developing rapidly, and at the same time, they are also promoting the updating and iteration of lightweight products. Since new energy vehicles are different from traditional fuel vehicles in terms of power, chassis, and body structure, this means that when manufacturing new energy vehicles, the geometric structures of the body need to be redesigned to meet the requirements of the new energy system function and structural strength, as well as the requirements of production process. With the application of key components such as integrated die-cast aluminum alloy, hot-formed double door rings, and high-performance composite materials, the body material is gradually changing from "steel-based" to "multi-material", and the connection process is gradually changing from traditional steel spot welding and arc welding, supplemented by adhesive bonding, to a variety of new connection processes such as melting welding, mechanical connection, and adhesive bonding.

[0003] In the production process of the new production line for double-door rings, the production order of multi-material splicing, melting welding, mechanical connection and gluing is not fixed. For example, during the splicing process, the A-pillar material can be used as the processing starting point to splice and connect with the adjacent component materials, or other component materials can be used as the processing starting point to splice and connect with the adjacent component materials; the subsequent steps such as melting welding are similar, and do not need to strictly follow the 1-to-1 production method, but can achieve 1-to-many, and can select the next step of material delivery according to the idleness of the processing equipment in the subsequent steps. On this basis, the traditional production line sequential operation method can no longer meet the efficient production needs of double door rings. Summary of the invention

[0004] In order to make up for the defect of low production efficiency of the above-mentioned production line, the present application proposes a material conveying method for a double door ring production line based on a transport vehicle and a double door ring production line.

[0005] The method includes: a double door ring production line material conveying method based on a transport vehicle, wherein a plurality of transport vehicles convey and transfer materials between equipment in various sections of the production line to realize production line operation, and the steps include:

[0006] A positioning module is provided for each section equipment, and the positioning module is used to determine the loading and unloading positions of the section equipment for positioning and transporting by the transport vehicle;

[0007] According to the functions of each section equipment, a general passage path and an equipment passage path are constructed for the transport vehicle, and the general passage paths are at least two and arranged in parallel; the equipment passage path is arranged between the section equipment and the general passage path, and the equipment passage path ends at the corresponding positioning module and is respectively connected to the at least two general passage paths, and each equipment passage path and each general passage path connection position constitute a connection node;

[0008] Count all the sections between adjacent connection nodes to obtain M first planned sections, and count all the sections between the equipment in the work section and the connection nodes to obtain N second planned sections;

[0009] Taking a certain section equipment of the previous operation step as the starting point, and taking at least one section equipment that can undertake the next operation step as the end point, according to the connection relationship between the first planned section and the second planned section and the travel speed of the transport vehicle, the potential travel routes between the starting point and all the end points are obtained;

[0010] According to the production step sequence of the production line, all the equipment in each section is taken as the starting point and the end point, and potential routes are traversed to eliminate conflicting potential routes, so as to obtain multiple feasible routes for the transport vehicle;

[0011] From the multiple feasible travel plans, the plan with the smallest difference in single-transport travel time for each transport vehicle is selected as the material transportation plan for the transport vehicle, and the transport vehicle is controlled to transport and transfer materials between the various work section equipment of the double door ring production line.

[0012] Furthermore, the positioning module includes at least 4 positioning piles, and each positioning pile is provided with a sensor.

[0013] Furthermore, each of the transport vehicles has a unique ID, and each connection node is provided with a sensing component and a communication component. The sensing component is used to sense the time and ID information of the transport vehicle passing through the connection node, and send the above information to the control end through the communication component.

[0014] Furthermore, each of the work section equipment is provided with a reporting module, which is used to report the transport vehicle ID, the arrival time, expected stay time, expected departure time and expected next target work section equipment of the transport vehicle to the control end after the sensor senses the transport vehicle, and report the actual departure time and actual next target work section to the control end when the transport vehicle leaves.

[0015] Furthermore, the transport vehicle is provided with a clamp, and the clamp can be replaced according to material requirements.

[0016] Furthermore, each connection node is provided with an ID identification, and the ID identification includes the location information of the connection node; each of the transport vehicles is provided with a reading module, and the reading module is used to obtain the ID identification information.

[0017] Furthermore, the ID identifier is a barcode image or an RFID tag, and the reading module is correspondingly provided with a scanner or an RFID reading module.

[0018] A double door ring production line comprises a control end, a transport vehicle and section equipment, wherein the production line adopts any one of the above methods to transport and transfer materials.

[0019] The present application adopts a transport vehicle to flexibly control the production steps of the production line, and adjusts the conveying and handling sequence according to the step sequence of the double door ring workpiece and the production rhythm of the work section equipment, making the double door ring production line more flexible and efficient, saving time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The production line path intention of one implementation mode of this application;

[0021] Figure 2 This is a schematic diagram of a positioning pile structure according to an embodiment of the present application. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are for making the present application better understood. However, those skilled in the art can easily recognize that some features can be omitted in different situations, or can be replaced by other elements, materials, methods. In some cases, some operations related to the present application are not shown or described in the specification, and this is to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations according to the description in the specification and the general technical knowledge in the art.

[0023] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0024] The serial numbers of the components in this document, such as "second", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0025] The technical solutions provided by various embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0026] Reference Figure 1 , an implementation method of the present application. Figure 1 The diagram shows the connection between the universal access path 2, the equipment access path 3 and each connection node 4 and the section equipment 1. In this embodiment, a control end controls multiple transport vehicles to transport and transfer materials between the various section equipment of the production line to realize the production line operation. The steps include: setting a positioning module for each section equipment, and the positioning module is used to determine the loading and unloading positions of the section equipment for the positioning and transportation of the transport vehicle; constructing a universal access path and an equipment access path for the transport vehicle according to the function of each section equipment, and the universal access path has at least two and is arranged in parallel; the equipment access path is arranged between the section equipment and the universal access path, and the equipment access path ends at the corresponding positioning module and is respectively connected to the at least two universal access paths, and each equipment access path and each universal access path connection position constitute a connection node; counting all the corresponding The sections between adjacent connecting nodes are counted to obtain M first planned sections, and the sections between all section equipment and connecting nodes are counted to obtain N second planned sections; a section equipment of the previous operation step is taken as the starting point, and all at least one section equipment that can undertake the next operation step is taken as the end point, and the potential passage routes between the starting point and all the end points are obtained according to the connection relationship between the first planned section and the second planned section and the travel speed of the transport vehicle; according to the production step sequence of the production line, all section equipment are taken as the starting point and the end point, and the potential passage routes are traversed, and conflicting potential passage routes are eliminated to obtain multiple feasible passage schemes for the transport vehicle; from the multiple feasible passage schemes, the scheme with the smallest difference in the single-transportation passage time of each transport vehicle is selected as the material transportation scheme of the transport vehicle, and the transport vehicle is controlled to transport and transfer materials between the various section equipment of the double door ring production line. This embodiment is based on a transport vehicle with automatic functions to transport and transfer materials on the production line. The currently widely used automatic guided vehicles (AGV, Automated Guided Vehicle) generally have the ability to automatically load and unload materials, and the scope of modification required in this application is relatively small. The double door ring production line of the present application is connected by a transport vehicle and related planned paths, avoiding the conveyor belt connection method of the previous production line and having lower requirements on the arrangement position of the work section equipment. Figure 1In the invention, the universal access paths are arranged in parallel, and the arrangement can be adjusted according to the location of the equipment in the work section, and can be in a straight line or not. At least two universal access paths arranged in parallel can meet the needs of each transport vehicle to pass and pass each other. In addition, the universal access paths of the present application can be further set to three, and the universal access paths on both sides are designated as one-way travel in opposite directions. The middle universal access path is divided into temporary access paths according to each connection node, for the transport vehicle to temporarily stop and to use the middle path when vehicles merge into the equipment access paths on both sides. When selecting a material transportation plan, the present application selects the plan with the smallest difference in the single-time transportation time of each truck from multiple feasible traffic plans as the material transportation plan for the truck, controls the truck to transport and transfer materials between the various work-section equipment of the double door ring production line, and diverts the truck's on-the-road time by using the different operating times of the equipment in each work-section, thereby avoiding the truck's on-the-road time from being too long, disrupting the transportation rhythm and causing accidents or traffic jams.

[0027] In the above embodiment, since the time error may be accumulated during the production process of the production line or the processing time of a certain section of equipment may change, the control end needs to update the material transportation plan at any time according to the actual operation needs, such as planning a material transportation plan when the transport vehicle is in place and starts to transport, or updating the transportation plan after a fixed time interval. A more preferred method is to update the material transportation plan when each transport vehicle completes a transportation task and the transport vehicle is within the range of the section equipment positioning module.

[0028] Based on the above embodiments, the present application further improves the positioning module. Figure 2 The positioning module includes at least 4 positioning piles 11, each of which is provided with a sensor 12. In this embodiment, in order to improve the positioning accuracy of the transport vehicle and improve the positioning accuracy of the transport vehicle and the section equipment for transporting materials, four positioning piles fixed at the section equipment are used in conjunction with sensors to correct the position of the transport vehicle and improve the positioning accuracy of the material removal / placement between the section equipment and the transport vehicle.

[0029] Based on the above embodiment, the present application further improves the transport vehicle and the connection node. Each transport vehicle has a unique ID, and each connection node is provided with a sensing component and a communication component. The sensing component is used to sense the time and ID information of the transport vehicle passing through the connection node, and send the above information to the control end through the communication component. In this embodiment, the position of each vehicle is sensed at any time through the unique ID and the corresponding sensing component to determine whether each transport vehicle is traveling according to the preset plan.

[0030] Based on the above embodiment, the present application further improves the section equipment and the transport vehicle. Each section equipment is provided with a reporting module. The reporting module is used to report the transport vehicle ID, the arrival time, expected stay time, expected departure time and expected next target section equipment of the transport vehicle to the control end after the sensor senses the transport vehicle, and report the actual departure time and the actual next target section to the control end when the transport vehicle leaves. In this embodiment, the predicted data and actual data of the transport vehicle are used to evaluate the cumulative error, evaluate whether the production line efficiency meets expectations, and assist in determining whether the transport plan needs to be updated.

[0031] Based on the above embodiment, the present application further improves the transport vehicle, wherein the transport vehicle is provided with a clamp, and the clamp can be replaced according to material requirements. In this embodiment, the material transfer speed is improved by cooperating with the clamp and the section equipment.

[0032] Based on the above embodiment, the present application further improves the transport vehicle and the connection node, each connection node is provided with an ID tag, and the ID tag contains the location information of the connection node; each transport vehicle is provided with a reading module, and the reading module is used to obtain the ID tag information. In this embodiment, the ID tag assists the transport vehicle to determine its own position, so that it can navigate the route according to the path planning.

[0033] Based on the above embodiment, the present application further improves the transport vehicle and the connection node, wherein the ID identifier is a barcode image or an RFID tag, and the reading module is provided with a scanner or an RFID reading module. In this embodiment, the barcode image such as a QR code, a barcode, etc. or an RFID tag is cost-effective and has mature technology.

[0034] The present application also proposes a double door ring production line, including a control end, a transport vehicle and a work section equipment, and the production line adopts the method described in any of the above embodiments to transport and transfer materials.

[0035] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0036] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0037] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0038] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0039] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0040] The memory may include non-permanent storage in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0041] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0042] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0043] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0044] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A material conveying method for a double door ring production line based on a transport vehicle, characterized in that: The control end controls multiple transport vehicles to transport and transfer materials between equipment in various sections of the production line to realize production line operations. The steps include: A positioning module is provided for each section equipment, and the positioning module is used to determine the loading and unloading positions of the section equipment for positioning and transporting by the transport vehicle; According to the functions of each section equipment, a general passage path and an equipment passage path are constructed for the transport vehicle, and the general passage paths are at least two and arranged in parallel; the equipment passage path is arranged between the section equipment and the general passage path, and the equipment passage path ends at the corresponding positioning module and is respectively connected to the at least two general passage paths, and each equipment passage path and each general passage path connection position constitute a connection node; Count all the sections between adjacent connection nodes to obtain M first planned sections, and count all the sections between the equipment in the work section and the connection nodes to obtain N second planned sections; Taking a certain section equipment of the previous operation step as the starting point, and taking at least one section equipment that can undertake the next operation step as the end point, according to the connection relationship between the first planned section and the second planned section and the travel speed of the transport vehicle, the potential travel routes between the starting point and all the end points are obtained; According to the production step sequence of the production line, all the equipment in each section is taken as the starting point and the end point, and potential routes are traversed to eliminate conflicting potential routes, so as to obtain multiple feasible routes for the transport vehicle; From the multiple feasible travel plans, the plan with the smallest difference in single-transport travel time for each transport vehicle is selected as the material transportation plan for the transport vehicle, and the transport vehicle is controlled to transport and transfer materials between the various work section equipment of the double door ring production line.

2. The method according to claim 1, characterized in that The positioning module includes at least 4 positioning piles, and each positioning pile is provided with a sensor.

3. The method according to claim 2, characterized in that Each of the transport vehicles has a unique ID, and each connection node is provided with a sensing component and a communication component. The sensing component is used to sense the time and ID information of the transport vehicle passing through the connection node, and send the above information to the control end through the communication component.

4. The method according to claim 3, characterized in that: Each of the work section equipment is provided with a reporting module, which is used to report the transport vehicle ID, the arrival time, expected stay time, expected departure time and expected next target work section equipment of the transport vehicle to the control end after the sensor senses the transport vehicle, and report the actual departure time and actual next target work section to the control end when the transport vehicle leaves.

5. The method according to claim 1, characterized in that The transport vehicle is provided with a clamp, and the clamp can be replaced according to material requirements.

6. The method according to claim 3, characterized in that Each connection node is provided with an ID identification, and the ID identification includes the location information of the connection node; each of the transport vehicles is provided with a reading module, and the reading module is used to obtain the ID identification information.

7. The method according to claim 6, characterized in that The ID identifier is a barcode image or an RFID tag, and the reading module is correspondingly provided with a scanner or an RFID reading module.

8. A double door ring production line, comprising a control terminal, a transport vehicle and a section equipment, characterized in that: The production line uses the method described in any one of claims 1 to 7 to transport and transfer materials.

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