Fastening connection device monitoring system

Abstract

The utility model discloses a fastening connection device monitoring system, a mounting station is provided with a tightening machine, the tightening machine is connected with a PLC host through a wire harness, the PLC host is connected with an equipment integration platform and is accessed to a network through the equipment integration platform to upload the working information of the tightening machine, the mounting station is provided with an RFID reader-writer for reading an RFID vehicle VIN code, and the RFID reader-writer is connected with the PLC host through a wire harness. And the RFID reader-writer is connected with the equipment integration platform, accesses the working parameters of the tightening machine of the whole vehicle with the current VIN code through the equipment integration platform and transmits the working parameters to the PLC host. The mode is an online and offline system network platform mode, and is reliable in installation, convenient to use, real-time in transmission, capable of visualizing parameters, high in inspection speed, in-place in one-time inspection, storable and callable in data and the like. And the working process is standard in specification, the labor intensity of workers is reduced, and the product process quality is monitored in time. The product quality is ensured and the customer satisfaction is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile manufacturing, in particular to a tightening machine used in the whole vehicle manufacturing process. Background Art

[0002] With the sustainable development of automobile products, quality is the core of brand products, and brake safety is the core of automobiles. For example: the connection quality of automobile brake pipes. Traditional operation mode: After employees tighten to the specified torque with a special torque wrench, they do a self-inspection of the paint, and the process inspection is manually checked with the torque wrench effect again.

[0003] At present, tightening equipment generally adopts electric tightening machines. For example, the public document with publication number CN214292863U, publication date 2021-09-28, and patent name "A handheld electric tightening wrench" discloses a handheld electric tightening wrench. The handheld electric tightening wrench includes a wrench body and a handle, and a servo motor is arranged inside the wrench body. The output end of the servo motor is connected to the input end of the planetary reducer through a gear, and the end output mechanism of the planetary reducer is a power output shaft. The end of the wrench body close to the power output shaft is provided with a counter-torque support plate perpendicular to the wrench body, and the end of the counter-torque support plate away from the wrench body is connected to a counter-torque support rod parallel to the wrench body, and the free end of the counter-torque support rod is in the same direction as the free end of the power output shaft; a start button and a forward and reverse switch are provided on the handle.

[0004] However, in the after-sales quality, the brake pipe connection torque attenuation phenomenon occurs, which has a great negative impact on accident analysis and brand quality, and also brings too many doubts and potential risks to customers. The system platform cannot detect, inspect, and identify online to fully monitor the quality of the whole vehicle throughout the whole process. After investigation, it was found that each assembly workshop did not have a standard monitoring mode for automobile brake pipe connections to complete this work. A system is needed that can be detected and identified in place at one time to ensure the quality of automobile product process, ensure production order, and improve the standardization, sustainability, identifiability, and monitoring of vehicle process operations. Summary of the invention

[0005] The utility model aims to solve the problems of torque detection, inspection, monitoring and identification in automobile tightening process, especially in the dynamic pipe connection tightening process, to realize a system which ensures the sustainability of the whole vehicle production line, guarantees the process quality traceability, standardizes the operation and ensures the reliability of the product, and improves customer satisfaction.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a fastening connection device monitoring system, the installation station is provided with a tightening machine, the tightening machine is connected to the PLC host through a wiring harness, the PLC host is connected to the equipment integration platform, and the network is accessed through the equipment integration platform to upload the tightening machine working information, the installation station is provided with an RFID reader / writer for reading the RFID vehicle VIN code, the RFID reader / writer is connected to the equipment integration platform, and the network is accessed through the equipment integration platform to obtain the current VIN code of the tightening machine working parameters of the vehicle and transmit them to the PLC host.

[0007] The equipment integration platform interacts with the MES information through the interface interaction platform. The information stored in the MES includes basic information on the correspondence between the vehicle material number and the vehicle model, basic information on the correspondence between the VIN number and the vehicle material number, basic information on the correspondence between the production line and the vehicle model, and basic information on error prevention of difference parts.

[0008] The equipment integration platform interacts with the production line master control information via the interface interaction platform.

[0009] The device integration platform is connected to a display screen serving as an information display board.

[0010] The PLC host is connected to a touch screen for human-computer interaction, and the touch screen displays the current working parameters of the tightening machine.

[0011] There are multiple installation stations, and the equipment included in each installation station includes a tightening machine, a touch screen, a PLC host and an RFID reader / writer. The equipment in each installation station is connected to the equipment integration platform.

[0012] The installation station is a vehicle brake pipe fastening and connection installation station.

[0013] The advantages of the utility model are:

[0014] 1. This mode is easy to operate and fully meets the process assembly and inspection requirements of various models;

[0015] 2. The special tool (tightening machine) uses an adjustable torque wrench with digital display and wireless automatic torque transmission, so as to ensure the collection of the torque parameters of the brake pipe connection of the bicycle;

[0016] 3. At the brake pipe connection and assembly station, an integrated machine is suspended on the line, which can store and display in real time the brake pipe torque state parameters transmitted wirelessly by special tools. Based on the state parameter identification and monitoring, whether the brake pipe connection parameters are qualified or not can be uploaded to the company's quality big data platform database for storage and call, etc.

[0017] 3. The special equipment in this mode can be assembled in one go without adjustment. The process is guaranteed and the success rate can reach 100%, ensuring the normalization of vehicle production.

[0018] 4. Fill the gap in the automobile manufacturing industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following is a brief description of the contents of each figure in the utility model specification:

[0020] Figure 1 This is the principle block diagram of the fastening connection device monitoring system. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the specific implementation methods of the present invention, such as the shapes and structures of the components involved, the relative positions and connection relationships between the components, the functions and working principles of the components, the manufacturing process and the operation and use methods, etc., through the description of the embodiments with reference to the accompanying drawings, so as to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention.

[0022] At present, there is a PLC host connected to the tightening machine at the installation station. The PLC host is connected to a touch screen. The PLC host is used to control the operation of the tightening machine, and the touch screen is an interactive device of the PLC host. The staff can input operating instructions to the PLC host through the touch screen, and it can also be used to display the current working parameters of the tightening machine.

[0023] The PLC host is connected to the equipment integration platform, and accesses the network through the equipment integration platform to upload the tightening machine working information. That is, the equipment integration platform interacts with the MES information through the interface interaction platform, mainly realizing the data integration of the entire platform system with other business systems of the company. The systems involved include: MES, production line master control, etc., and finally realize the unification of basic information, providing real-time production data for the automobile production and manufacturing quality business system. The MES information source and the equipment integration platform information source realize the unification of basic information data, the basic information of the correspondence between the vehicle material number and the model, the basic information of the correspondence between the vi n number and the vehicle material number, the basic information of the correspondence between the production line and the model, the basic information of the error prevention of different parts, and other information data are unified to achieve interchange and sharing. In addition, the equipment integration platform interacts with the production line master control information through the interface interaction platform, and can integrate the work of the tightening machine into the entire production line master control.

[0024] The installation station is equipped with an RFID reader that reads the RFID vehicle VIN code. The RFID reader is connected to the equipment integration platform, and the network is connected to the current VIN code vehicle tightening machine working parameters through the equipment integration platform and transmitted to the PLC host. The correspondence between the VIN code and the workstation during the vehicle circulation process is realized. Through the tracking and positioning of the RFID vehicle VIN code, accurate vehicle information is provided for functions such as tightening program push, material code scanning error prevention, and process assembly guidance. Relying on the code carrier system, according to the vehicle sorting information, the vehicle enters the tightening station, connects to the receiver through wireless radio frequency technology, and automatically pushes the tightening operation parameters and related parameters to the tightening machine controller, which is displayed through the all-in-one machine. The tightening operation is completed in the station, and if it is unqualified, an alternative solution operation is applied.

[0025] The equipment integration platform is connected to a display screen as an information board, which can realize electronic assembly guidance boards, electronic assembly guidance boards for differential parts, and process document browsing, and replace the on-site paper guidance document process with the terminal display screen. Before assembling parts, they are verified by scanning the code and comparing the parts information in the database. Only if they meet the requirements can they be assembled, otherwise the line can be stopped.

[0026] The installation station of this system is an automobile brake pipe fastening and connection installation station. There are multiple installation stations. The equipment included in each installation station includes a tightening machine, a touch screen, a PLC host and an RFID reader. The equipment at each installation station is connected to the equipment integration platform, which can realize the simultaneous operation of multiple installation stations.

[0027] The abnormal problem points are displayed through the integrated machine at the end of the work section, and the abnormal quality warning, tightening results, and component comparison results of assembly error prevention are prompted and handled if there are any abnormalities. Relying on the intranet function of the enterprise network platform, the controller is connected via Ethernet, and the intranet directly accesses the equipment server to achieve remote parameter setting and change the existing parameter setting mode; MES verifies the data validity of VIN and material number, and feeds back to the equipment acquisition platform; the process personnel of the equipment acquisition platform bind the material number and equipment parameters and send them to the equipment acquisition platform.

[0028] Fixed devices such as all-in-one machines, RFID readers, PLC hosts, etc. are directly connected through network crystal heads; mobile devices such as tightening machines are equipped with network panel modules at the front end of mobile cables, and industrial flexible network cables are used to connect the modules to the tightening machine equipment.

[0029] The above system can realize the following functions:

[0030] 1. Data traceability: Use VIN code as index to quickly query the production data information of all vehicle equipment;

[0031] 2. Data application: business reports generated by data upload (parameters and angles uploaded wirelessly by tightening machine equipment). If there is process rework, exception handling and fault repair, the rework personnel or process personnel must enter the reworked data into the server.

[0032] 3. Report generation and analysis: Generate data reports daily and send them to process personnel to provide timely warning, correction and analysis of abnormal information data. Process personnel can directly access relevant equipment data according to their needs, or export it in ECEXL format for quick screening.

[0033] 4. The use of data algorithms replaces manual statistical analysis, which is conducive to improving quality and efficiency. Optimization of tightening torque and angle upper and lower limits: Through data fluctuations, on-site process parameters can be optimized. Process personnel can further analyze the personnel operations, processes, and incoming parts quality of specific workstations by monitoring the "first pass rate" of production line workstations.

[0034] The specific operation process of the system:

[0035] 1. Turn on the power, and turn on the device and the all-in-one display;

[0036] 2. Connect the left rear and right rear brake hard pipe II to the double two-way connection point;

[0037] 3. Tighten with a special open-end wrench and paint to confirm, tightening torque 18±2Nm;

[0038] 4. Align the left and right rear brake tubes I with the two through holes and pre-tighten them. Tighten them with an open-end wrench on a tightening machine and paint them to confirm. The tightening torque is 18±2Nm.

[0039] 5. When the tightening machine is not pushed or a fault occurs, call the team leader or section chief to swipe the card and switch to manual mode. The employee uses a scanner to scan the VIN number and material number + alternative solution: Use a fixed-value open-end torque wrench to re-tighten the bolts at each point and confirm with paint. The tightening torque is 18±2Nm.

[0040] Notes when operating this system:

[0041] 1. No barbaric behavior such as throwing or smashing should occur, and the equipment should be taken good care of;

[0042] 2. It is used exclusively for assembly, monitoring and inspection during the fastening and connection of brake pipes and shall not be used for other purposes;

[0043] 3. It can be extended to special equipment in after-sales maintenance.

[0044] This model is an online and offline system network platform model, which is reliable to install, easy to use, real-time transmission, intuitive parameters, fast inspection speed, one-time inspection, data storage, callable, etc. It is durable, with standardized operation process, reduces the labor intensity of employees, and timely monitors the quality of product process. It ensures product quality and improves customer satisfaction.

[0045] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A fastening connection device monitoring system, wherein a tightening machine is provided at the installation station, and the tightening machine is connected to a PLC host through a wiring harness, characterized in that: The PLC host is connected to the equipment integration platform, and accesses the network through the equipment integration platform to upload the tightening machine working information. The installation station is provided with an RFID reader / writer for reading the RFID vehicle VIN code. The RFID reader / writer is connected to the equipment integration platform, and accesses the network through the equipment integration platform to obtain the tightening machine working parameters of the vehicle with the current VIN code and transmit them to the PLC host.

2. The fastening connection device monitoring system according to claim 1, characterized in that: The equipment integration platform interacts with the MES information through the interface interaction platform. The information stored in the MES includes basic information on the correspondence between the vehicle material number and the vehicle model, basic information on the correspondence between the VIN number and the vehicle material number, basic information on the correspondence between the production line and the vehicle model, and basic information on error prevention of difference parts.

3. The fastening connection device monitoring system according to claim 1, characterized in that: The equipment integration platform interacts with the production line master control information via the interface interaction platform.

4. The fastening connection device monitoring system according to claim 1, characterized in that: The device integration platform is connected to a display screen serving as an information display board.

5. The fastening connection device monitoring system according to claim 1, 2, 3 or 4, characterized in that: The PLC host is connected to a touch screen for human-computer interaction, and the touch screen displays the current working parameters of the tightening machine.

6. The fastening connection device monitoring system according to claim 5, characterized in that: There are multiple installation stations, and the equipment included in each installation station includes a tightening machine, a touch screen, a PLC host and an RFID reader / writer. The equipment in each installation station is connected to the equipment integration platform.

7. The fastening connection device monitoring system according to claim 6, characterized in that: The installation station is a vehicle brake pipe fastening and connection installation station.

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