Welding robot system based on RFID

Abstract

The utility model provides a welding robot system based on radio frequency identification (RFID), which relates to the technical field of welding equipment, and comprises a workbench, a welding robot, a control system and a control system, the RFID tag is arranged on the workpiece, and the RFID tag carries model information corresponding to the workpiece; the RFID reader-writer is arranged on the workbench and used for reading the model information carried by the RFID tag; the process parameter system is connected with the RFID reader-writer and can receive the model information read by the RFID reader-writer and determine welding parameters corresponding to each workpiece according to the model information; and the welding robot assembly is connected with the technological parameter system and used for obtaining the welding parameters of each workpiece from the technological parameter system so as to weld the workpieces. The welding robot system automatically completes adjustment of the welding parameters so as to cope with different types of workpieces, the situation that the welding parameters of the welding robot assembly are adjusted through manual cooperation is avoided, full-automatic control over the welding robot assembly is achieved, and the working efficiency of the welding robot system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, and in particular to a welding robot system based on RFID. Background Art

[0002] In the heavy industry, the bracket welding process is a very critical production step. The bracket welding production line mainly includes top beams, shield beams, bases, connecting rods, main bars, push rods and other structural parts. The welding hours exceed 24 hours. Currently, the welding robot welding mode is used for automatic welding. When some insertion orders and temporary orders appear in the production workshop and the welding workpiece model needs to be changed, manual cooperation is still required. The staff needs to adjust the parameters of the welding robot, and full automation cannot be achieved. At the same time, manual adjustment of the parameters of the welding robot will also consume time, resulting in reduced welding efficiency.

[0003] Therefore, how to propose a welding robot system based on RFID (Radio Frequency Identification) to reduce the time for adjusting the welding robot parameters has become a problem that needs to be solved urgently. Utility Model Content

[0004] The present application proposes an RFID-based welding robot system, which solves the problem of reduced welding efficiency due to changing the workpiece type in the related art.

[0005] To this end, the first object of the utility model is to provide a welding robot system based on RFID.

[0006] In view of this, the technical solution of the first aspect of the utility model provides an RFID-based welding robot system, including: a workbench for placing workpieces; an RFID tag, which is arranged on the workpiece, and the RFID tag carries model information corresponding to the workpiece; an RFID reader / writer, which is arranged on the workbench and is used to read the model information carried by the RFID tag; a process parameter system, which is connected to the RFID reader / writer and can receive the model information read by the RFID reader / writer, and determine the welding parameters corresponding to each workpiece according to the model information; a welding robot assembly, which is connected to the process parameter system and is used to obtain the welding parameters of each workpiece from the process parameter system to weld the workpieces.

[0007] According to the RFID-based welding robot system provided by the utility model, it includes: a workbench, an RFID tag, an RFID reader / writer, a process parameter system and a welding robot assembly. Among them, the workbench is used to hold the workpiece, the RFID tag is set on the workpiece, the RFID tag carries the model information corresponding to the workpiece, and the RFID reader / writer is set on the workbench, and is used to read the model information carried by the RFID tag. In other words, the RFID tag is attached to the workpiece, the RFID tag carries the model information corresponding to the workpiece, and the RFID reader / writer can read the model information on the RFID tag, thereby obtaining the model information of the workpiece. The process parameter system is connected to the RFID reader / writer, and can receive the model information read by the RFID reader / writer, and determine the welding parameters corresponding to the workpiece according to the model information. The welding robot assembly is connected to the process parameter system, and the process parameter system can send the model information of the workpiece to the welding robot assembly. The welding robot assembly automatically adjusts the welding parameters according to the obtained welding parameters, thereby completing the welding of the workpiece. It can be seen that the welding robot system automatically adjusts the welding parameters through the mutual cooperation between RFID tags, RFID readers, process parameter systems and welding robot components to cope with different types of workpieces, such as top beams, cover beams, bases, connecting rods, main reinforcements, push rods and other structural parts, avoiding manual adjustment of the welding parameters of the welding robot components, reducing the time spent on changing the workpiece model on the production line, realizing fully automatic control of the welding robot components, and improving the working efficiency of the welding robot system.

[0008] In some technical solutions, optionally, the welding robot system also includes: a sensor, which is arranged on the workbench and connected to the RFID reader; wherein, when the sensor detects that there is a workpiece on the workbench, it sends a trigger signal to the RFID reader, so that the RFID reader is converted from a closed state to an activated state.

[0009] In this technical solution, the welding robot system also includes a sensor, which is arranged on the workbench and connected to the RFID reader / writer. The sensor can send a trigger signal to the RFID reader / writer to activate or shut down the RFID reader / writer. The trigger signal can be an IO (input / output) signal, that is, a switch signal. In other words, the sensor can detect whether there is a workpiece on the workbench. When there is a workpiece on the workbench, the sensor sends a trigger signal to the RFID reader / writer to convert the RFID reader / writer from a closed state to an activated state; when there is no workpiece on the workbench, the RFID reader / writer is in a closed state. It can be seen that this solution can not only ensure that the RFID reader / writer automatically reads the model information of the workpiece, but also enable the RFID reader / writer to work intermittently. When the workpiece is not detected, the RFID reader / writer is turned off, thereby reducing the use time of the RFID reader / writer, increasing the service life of the RFID reader / writer, and greatly reducing the maintenance cost of the RFID reader / writer.

[0010] In some technical solutions, optionally, the sensor includes at least one of a position sensor, a light sensor, and a weight sensor.

[0011] In this technical solution, the sensor includes at least one of a position sensor, a light sensing sensor and a weight sensor. Among them, the position sensor can detect the position of the workpiece, and when the distance between the workpiece and the position sensor reaches a threshold, the position sensor sends a trigger signal. The light sensing sensor can sense changes in light, and by sensing changes in light, detect whether there is a workpiece on the workbench. The weight sensor is set on the workbench, and when a workpiece is placed on the workbench, the weight sensor will detect the weight change and send a trigger signal. This solution can use at least one of the position sensor, the light sensing sensor and the weight sensor to detect whether there is a workpiece on the workbench, so as to determine whether to send a trigger signal to start the RFID reader.

[0012] In some technical solutions, optionally, the welding robot system includes at least two RFID readers.

[0013] In this technical solution, the welding robot system includes at least two RFID readers. In actual scenarios, the RFID reader may crash or fail to work due to its own reasons or environmental reasons. Setting multiple RFID readers to simultaneously read and send model information can improve the fault tolerance of the welding robot system. Even if one of the RFID readers is damaged, the RFID tag information can still be read, thereby improving the working reliability of the welding robot system.

[0014] In some technical solutions, optionally, the welding robot system also includes: a host, connected to at least two RFID readers and a process parameter system; wherein the host is used to receive the model information read by the RFID reader and send the model information to the process parameter system.

[0015] In this technical solution, the welding robot system also includes a host, which is connected to at least two RFID readers and a process parameter system. In other words, the host is connected to multiple RFID readers at the same time, and any RFID reader can send the model information of the identified workpiece to the host. After the host receives the model information, it sends the model information to the process parameter system. In other words, the host plays the role of information integration, ensuring that the model information can be stably sent to the process parameter system, thereby improving the working reliability of the welding robot system.

[0016] In addition, it should be noted that there are differences in the reading function and information transmission function of multiple RFID readers. After receiving the trigger signal, multiple RFID readers are turned on at the same time to obtain the model information on the RFID tag. However, since the time when multiple RFID readers are sent to the host is different, after the host receives the model information obtained by one of the RFID readers, it does not process the model information obtained by another RFID reader, thereby efficiently completing the information integration and information transmission work and improving the work efficiency of the welding robot system.

[0017] In some technical solutions, optionally, the process parameter system includes: a database storing model information and welding parameters of the workpiece; a matching module for matching the welding parameters corresponding to the model information according to the database and outputting the welding parameters.

[0018] In this technical solution, the process parameter system includes a database and a matching module, wherein the database stores the model information and welding parameters of the workpiece, and the model information of the workpiece has a corresponding relationship with the welding parameters, and the matching module can match the welding parameters corresponding to the model information according to the database and output the welding parameters. That is, after receiving the model information, the process parameter system matches the welding parameters corresponding to the model information in the database through the matching module, and sends the obtained welding parameters to the welding robot component. The process parameter system can complete the conversion of model information and welding parameters, and realize the all-round automatic control of the welding robot system.

[0019] In some technical solutions, optionally, the welding robot assembly includes: a robotic arm for picking up and welding workpieces; and a control module for receiving welding parameters and adjusting operating parameters of the robotic arm according to the welding parameters.

[0020] In this technical solution, the welding robot assembly includes a mechanical arm and a control module. The mechanical arm can pick up and weld workpieces. The control module can receive welding parameters and adjust the operating parameters of the mechanical arm according to the welding parameters. That is, after the control module receives the welding parameters, it can control the operating parameters of the mechanical arm according to the welding parameters, that is, automatically adjust the operating parameters of the mechanical arm according to the welding parameters, so as to ensure that the welding robot assembly can weld workpieces of different models and specifications without manual adjustment, thereby enhancing the applicability of the welding robot system.

[0021] In some technical solutions, optionally, the RFID tag includes an RFID nickel-cobalt tag.

[0022] In this technical solution, the RFID tag includes an RFID nickel-cobalt tag, that is, the RFID tag is made of high-temperature resistant nickel-cobalt material. Generally, the temperature in a welding workshop is relatively high, and the RFID tag is attached to the workpiece. The temperature of the workpiece is even higher during the welding process. RFID tags of general materials are easily damaged by high temperatures. Therefore, the use of RFID nickel-cobalt tags can greatly improve the stability of the tags to ensure that the welding robot system can operate automatically.

[0023] In some technical solutions, optionally, the RFID reader / writer includes: a scanning module for scanning the model information carried on the RFID tag; an Ethernet module connected to the scanning module; wherein the Ethernet module controls the start and stop of the scanning module by connecting or disconnecting from the network.

[0024] In this technical solution, the RFID reader includes a scanning module and an Ethernet module, wherein the scanning module can scan the model information carried on the RFID tag, and the Ethernet module is connected to the scanning module. The user can control the operation of the RFID reader by disconnecting or connecting the Ethernet module. For example, in a working scenario, the user controls the RFID reader to connect to the network, thereby controlling the normal operation of the scanning module and then reading the model information on the RFID tag. That is, the user can independently control the operation of the RFID reader, and by reasonably arranging the use time of the RFID reader, the service life of the RFID reader is further improved.

[0025] In some technical solutions, optionally, the RFID tag includes: a base layer and a covering layer, the base layer and the covering layer are arranged opposite to each other; an interlayer, which is arranged between the base layer and the covering layer; and a radio frequency circuit, which is arranged in the interlayer.

[0026] In this technical solution, the RFID tag includes a base layer, a cover layer and an interlayer, wherein the base layer and the cover layer are arranged relative to each other, the interlayer is arranged between the base layer and the cover layer, and the radio frequency circuit is arranged in the interlayer. That is, the RFID tag has a multi-layer structure, and the radio frequency circuit is not exposed outside the RFID tag, but exists inside the RFID tag. On the one hand, the base layer and the cover layer play a role in physical protection of the radio frequency circuit. On the other hand, the radio frequency circuit is arranged in the interlayer, which can also improve the flatness of the RFID tag.

[0027] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0029] Figure 1 This is one of the structural schematic diagrams of an RFID-based welding robot system according to an embodiment of the present utility model;

[0030] Figure 2 This is the second structural schematic diagram of an RFID-based welding robot system according to an embodiment of the present invention;

[0031] Figure 3 It is a structural schematic diagram of an RFID reader-writer according to an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of an RFID tag according to an embodiment of the present invention;

[0033] Figure 5 This is the third structural schematic diagram of an RFID-based welding robot system according to an embodiment of the present invention.

[0034] in, Figures 1 to 5 The corresponding relationship between the reference numerals and component names in the figure is:

[0035] 1 workbench, 2 workpiece, 3 RFID tag, 31 base layer, 32 cover layer, 33 interlayer, 34 radio frequency circuit, 4 RFID reader / writer, 41 scanning module, 42 Ethernet module, 5 process parameter system, 51 database, 52 matching module, 6 welding robot component, 61 robotic arm, 62 control module, 63 electrical interaction module, 7 sensor, 8 host. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] The embodiment of the first aspect of the utility model provides a welding robot system based on RFID, such as Figure 1 As shown, it includes: a workbench 1, used to hold a workpiece 2; an RFID tag 3, which is arranged on the workpiece 2, and the RFID tag 3 carries the model information corresponding to the workpiece 2; an RFID reader 4, which is arranged on the workbench 1, and is used to read the model information carried by the RFID tag 3; a process parameter system 5, which is connected to the RFID reader 4, can receive the model information read by the RFID reader 4, and determine the welding parameters corresponding to each workpiece 2 according to the model information; a welding robot component 6, which is connected to the process parameter system 5, and is used to obtain the welding parameters of each workpiece 2 from the process parameter system 5 to weld the workpiece 2.

[0038] According to the RFID-based welding robot system provided by the utility model, it includes: a workbench 1, an RFID tag 3, an RFID reader / writer 4, a process parameter system 5 and a welding robot assembly 6. Among them, the workbench 1 is used to hold the workpiece 2, the RFID tag 3 is set on the workpiece 2, the RFID tag 3 carries the model information corresponding to the workpiece 2, and the RFID reader / writer 4 is set on the workbench 1, and is used to read the model information carried by the RFID tag 3. In other words, the RFID tag 3 is attached to the workpiece 2, the RFID tag 3 carries the model information corresponding to the workpiece 2, and the RFID reader / writer 4 can read the model information on the RFID tag 3, thereby obtaining the model information of the workpiece 2. The process parameter system 5 is connected to the RFID reader / writer 4, and can receive the model information read by the RFID reader / writer 4, and determine the welding parameters corresponding to the workpiece 2 according to the model information. The welding robot assembly 6 is connected to the process parameter system 5, and the process parameter system 5 can send the model information of the workpiece 2 to the welding robot assembly 6. The welding robot assembly 6 automatically adjusts the welding parameters according to the obtained welding parameters, thereby completing the welding of the workpiece 2. It can be seen that the welding robot system automatically adjusts the welding parameters through the mutual cooperation between the RFID tag 3, the RFID reader 4, the process parameter system 5 and the welding robot assembly 6 to cope with different types of workpieces 2, such as top beams, cover beams, bases, connecting rods, main reinforcements, push rods and other structural parts, thereby avoiding manual adjustment of the welding parameters of the welding robot assembly 6, reducing the time spent on changing the model of the workpiece 2 on the production line, realizing fully automatic control of the welding robot assembly 6, and improving the working efficiency of the welding robot system.

[0039] In some embodiments, optionally, Figure 2 As shown, the welding robot system also includes: a sensor 7, which is arranged on the workbench 1 and connected to the RFID reader 4; wherein, when the sensor 7 detects that there is a workpiece 2 on the workbench 1, it sends a trigger signal to the RFID reader 4, so that the RFID reader 4 is converted from a closed state to an activated state.

[0040] In this embodiment, the welding robot system also includes a sensor 7, which is arranged on the workbench 1 and connected to the RFID reader 4. The sensor 7 can send a trigger signal to the RFID reader 4 to activate or shut down the RFID reader 4. The trigger signal can be an IO signal, that is, a switch signal. In other words, the sensor 7 can detect whether there is a workpiece 2 on the workbench 1. When there is a workpiece 2 on the workbench 1, the sensor 7 sends a trigger signal to the RFID reader 4 to convert the RFID reader 4 from a closed state to an activated state; when there is no workpiece 2 on the workbench 1, the RFID reader 4 is in a closed state. It can be seen that this solution can not only ensure that the RFID reader 4 automatically reads the model information of the workpiece 2, but also enable the RFID reader 4 to work intermittently. When the workpiece 2 is not detected, the RFID reader 4 is shut down, thereby reducing the use time of the RFID reader 4, increasing the service life of the RFID reader 4, and greatly reducing the maintenance cost of the RFID reader 4.

[0041] In some embodiments, optionally, the sensor 7 includes at least one of a position sensor, a light sensor, and a weight sensor.

[0042] In this embodiment, the sensor 7 includes at least one of a position sensor, a light sensing sensor and a weight sensor. Among them, the position sensor can detect the position of the workpiece 2, and when the distance between the workpiece 2 and the position sensor reaches a threshold, the position sensor sends a trigger signal. The light sensing sensor can sense changes in light, and by sensing changes in light, detect whether there is a workpiece 2 on the workbench 1. The weight sensor is set on the workbench 1. When a workpiece 2 is placed on the workbench 1, the weight sensor will detect the weight change and send a trigger signal. This solution can use at least one of a position sensor, a light sensing sensor and a weight sensor to detect whether there is a workpiece 2 on the workbench 1, so as to determine whether to send a trigger signal to start the RFID reader 4.

[0043] In some embodiments, optionally, the welding robot system includes at least two RFID readers 4 .

[0044] In this embodiment, the welding robot system includes at least two RFID readers 4. In actual scenarios, the RFID reader 4 may crash or fail to work due to its own reasons or environmental reasons. Setting multiple RFID readers 4 to simultaneously read and send model information can improve the fault tolerance of the welding robot system. Even if one of the RFID readers 4 is damaged, it is still possible to complete the reading of the RFID tag 3 information, thereby improving the working reliability of the welding robot system.

[0045] In some embodiments, optionally, the welding robot system also includes: a host 8, connected to at least two RFID readers 4 and a process parameter system 5; wherein the host 8 is used to receive the model information read by the RFID reader 4, and send the model information to the process parameter system 5.

[0046] In this embodiment, the welding robot system further includes a host 8, and the host 8 is connected to at least two RFID readers 4 and a process parameter system 5. That is, the host 8 is connected to multiple RFID readers 4 at the same time, and any RFID reader 4 can send the model information of the identified workpiece 2 to the host 8. After the host 8 receives the model information, it sends the model information to the process parameter system 5. In other words, the host 8 plays the role of information integration, ensuring that the model information can be stably sent to the process parameter system 5, thereby improving the working reliability of the welding robot system.

[0047] In addition, it should be noted that there are differences between the reading function and the information transmission function of multiple RFID readers 4. After receiving the trigger signal, multiple RFID readers 4 are turned on at the same time to obtain the model information on the RFID tag 3. However, since the time when multiple RFID readers 4 send to the host 8 is different, after the host 8 receives the model information obtained by one of the RFID readers 4, it does not process the model information obtained by another RFID reader 4, thereby efficiently completing the information integration and information transmission work, and improving the working efficiency of the welding robot system.

[0048] In some embodiments, optionally, the process parameter system 5 includes: a database 51 storing model information and welding parameters of the workpiece 2; a matching module 52 for matching welding parameters corresponding to the model information according to the database 51 and outputting the welding parameters.

[0049] In this embodiment, the process parameter system 5 includes a database 51 and a matching module 52, wherein the database 51 stores the model information and welding parameters of the workpiece 2, and the model information of the workpiece 2 has a corresponding relationship with the welding parameters, and the matching module 52 can match the welding parameters corresponding to the model information according to the database 51, and output the welding parameters. That is, after receiving the model information, the process parameter system 5 matches the welding parameters corresponding to the model information in the database 51 through the matching module 52, and sends the obtained welding parameters to the welding robot component 6. The process parameter system 5 can complete the conversion of model information and welding parameters, and realize the all-round automatic control of the welding robot system.

[0050] In some embodiments, optionally, the welding robot assembly 6 includes: a robot arm 61 for picking up and welding the workpiece 2; and a control module 62 for receiving welding parameters and adjusting the operating parameters of the robot arm 61 according to the welding parameters.

[0051] In this embodiment, the welding robot assembly 6 includes a mechanical arm 61 and a control module 62. The mechanical arm 61 can pick up and weld the workpiece 2. The control module 62 can receive welding parameters and adjust the operating parameters of the mechanical arm 61 according to the welding parameters. That is, after the control module 62 receives the welding parameters, it can control the operating parameters of the mechanical arm 61 according to the welding parameters, that is, automatically adjust the operating parameters of the mechanical arm 61 according to the welding parameters, so as to ensure that the welding robot assembly 6 can weld workpieces 2 of different models and specifications without manual adjustment, thereby enhancing the applicability of the welding robot system.

[0052] In some embodiments, optionally, the RFID tag 3 comprises an RFID nickel-cobalt tag.

[0053] In this embodiment, the RFID tag 3 includes an RFID nickel-cobalt tag, that is, the RFID tag 3 is made of high-temperature resistant nickel-cobalt material. Generally, the temperature in a welding workshop is relatively high, and the RFID tag 3 is attached to the workpiece 2. The temperature of the workpiece 2 is even higher during the welding process. The RFID tag 3 of general materials is easily damaged by high temperature. Therefore, the use of RFID nickel-cobalt tags can greatly improve the stability of the tags to ensure that the welding robot system can operate automatically.

[0054] In some embodiments, optionally, Figure 3 As shown, the RFID reader 4 includes: a scanning module 41 for scanning the model information carried on the RFID tag 3; an Ethernet module 42 connected to the scanning module 41; wherein the Ethernet module 42 controls the start and stop of the scanning module 41 by connecting or disconnecting the network.

[0055] In this embodiment, the RFID reader 4 includes a scanning module 41 and an Ethernet module 42, wherein the scanning module 41 can scan the model information carried on the RFID tag 3, and the Ethernet module 42 is connected to the scanning module 41. The user can control the operation of the RFID reader 4 by disconnecting or connecting the Ethernet module 42. For example, in a working scenario, the user controls the RFID reader 4 to connect to the network, thereby controlling the normal operation of the scanning module 41, and then reading the model information on the RFID tag 3. That is, the user can independently control the operation of the RFID reader 4, and by reasonably arranging the use time of the RFID reader 4, the service life of the RFID reader 4 is further improved.

[0056] In some embodiments, optionally, Figure 4 As shown, the RFID tag 3 includes: a base layer 31 and a cover layer 32, the base layer 31 and the cover layer 32 are arranged opposite to each other; an interlayer 33, which is arranged between the base layer 31 and the cover layer 32; and a radio frequency circuit 34, which is arranged in the interlayer 33.

[0057] In this embodiment, the RFID tag 3 includes a base layer 31, a cover layer 32 and an interlayer 33, wherein the base layer 31 and the cover layer 32 are arranged opposite to each other, the interlayer 33 is arranged between the base layer 31 and the cover layer 32, and the radio frequency circuit 34 is arranged in the interlayer 33. That is, the RFID tag 3 is provided with a multi-layer structure, and the radio frequency circuit 34 is not exposed outside the RFID tag 3, but exists inside the RFID tag 3. On the one hand, the base layer 31 and the cover layer 32 play a role in physical protection of the radio frequency circuit 34. On the other hand, the radio frequency circuit 34 is arranged in the interlayer 33, which can also improve the flatness of the RFID tag 3.

[0058] It is understandable that the support welding process in the coal industry is a very critical production step. The support welding production line mainly includes top beams, cover beams, bases, connecting rods, main bars, push rods and other structural parts, and the welding hours exceed 24 hours. At present, the welding robot welding mode is used for automatic welding. Since the hydraulic supports in the coal industry are more designed for one mine, the current welding program programming relies on manual work, and the corresponding process welding parameters are written in the program, and the program is manually copied into the robot for program import. At present, the mode of designing the welding process database is generally adopted, and the process parameter database is configured by binding the process parameters by model. When the project is changed as a whole, the process parameters can be transferred to the robot control module through Ethernet by entering the product model for change production. However, this method has the problems of requiring manual communication, high labor costs, and long operation time. At the same time, when some insertion orders and temporary orders appear in the production workshop, the production mode cannot be effectively adapted, and manual cooperation is still required, and full automation cannot be achieved. In addition, some equipment is always in a state of long-term work, which is not conducive to equipment maintenance and easily leads to reduced system work efficiency.

[0059] To this end, the utility model proposes a welding robot system based on RFID. In a specific application, such as Figure 5 As shown, the welding robot system mainly includes a sensor 7, a first RFID reader / writer, a second RFID reader / writer, a host 8, a process parameter system 5, an electrical interaction module 63, a control module 62, a mechanical arm 61, etc. Among them, the mechanical arm 61, the control module 62, and the electrical interaction module 63 are integrated on the robot.

[0060] Compared with the prior art, the welding robot system of the utility model adopts a mode of replacing the existing manual process parameter entry with the information of the RFID tag 3, and can be dynamically changed according to the actual production. The order model information is written into the RFID tag 3, and the RFID tag 3 is attached to the workpiece 2. When the workpiece 2 is grabbed, the sensor 7 is triggered, and the sensor 7 sends an IO signal (switch signal) to the two RFID readers 4 at the same time, and controls the two RFID readers 4 (the first RFID reader and the second RFID reader) to read the content of the RFID tag 3, and then uploads the read content of the RFID tag 3 to the host 8, which processes the read content of the RFID tag 3 to obtain the model information and transmit the model information to the process parameter system 5. The process parameter system 5 matches the corresponding process parameters according to the model information, and sends it to the electrical interaction module 63. The electrical interaction module 63 receives the process parameters sent by the process parameter system 5 and converts them into a programming language that can be used by the robot, and sends the programming language to the control module 62, so that the control module 62 controls the robot arm 61 to adjust the welding process based on the programming language. The utility model has high reliability and accuracy, can reduce man-hours, increase the service life of components, extend the maintenance cycle and reduce maintenance costs.

[0061] Further, in the actual application scenario, the workpiece 2 is placed on the workbench 1, two RFID reader-writer 4 devices are set on one side of the workbench 1, and the sensor 7 is set at any position on the workbench 1 with a certain distance from the placed workpiece 2 to ensure that the sensor 7 can be used normally. The RFID tag 3 is set on the workpiece 2 to ensure that when the workpiece 2 is placed on the stage, the signal on the RFID tag 3 on the workpiece 2 can be recognized by the two RFID readers 4. It should be noted that the two RFID reader-writer 4 devices are turned on by the sensor 7 at the same time, and the recognized signals are sent to the host 8. However, considering that it is impossible to ensure that the two RFID reader-writer 4 devices send signals to the host 8 at the same time in the actual scenario, the host 8 only applies the signal transmitted by the reader-writer that sends the signal first when processing the signal, and the signal of the other RFID reader-writer 4 is not processed to ensure that the information in the RFID tag 3 can be accurately sent to the host 8 by the RFID reader-writer 4. The application of two RFID reader-writer 4 devices can ensure that the welding robot system can work smoothly, reduce the failure rate, and thus improve the working efficiency of the welding robot system.

[0062] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0063] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0065] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A welding robot system based on RFID, characterized in that: include: A workbench, used to hold workpieces; An RFID tag is disposed on the workpiece, and the RFID tag carries model information corresponding to the workpiece; An RFID reader / writer, arranged on the workbench, is used to read the model information carried by the RFID tag; A process parameter system, connected to the RFID reader / writer, capable of receiving the model information read by the RFID reader / writer, and determining the welding parameters corresponding to each of the workpieces according to the model information; The welding robot component is connected to the process parameter system and is used to obtain the welding parameters of each workpiece from the process parameter system to weld the workpiece.

2. The RFID-based welding robot system according to claim 1, characterized in that: Also includes: A sensor, arranged on the workbench and connected to the RFID reader; When the sensor detects that there is the workpiece on the workbench, it sends a trigger signal to the RFID reader / writer, so that the RFID reader / writer is switched from a closed state to an activated state.

3. The RFID-based welding robot system according to claim 2, characterized in that: The sensor includes at least one of a position sensor, a light sensor and a weight sensor.

4. The RFID-based welding robot system according to claim 2, characterized in that: At least two RFID readers are included.

5. The RFID-based welding robot system according to claim 4, characterized in that: Also includes: A host computer, connected to at least two of the RFID readers and the process parameter system; The host is used to receive the model information read by the RFID reader and send the model information to the process parameter system.

6. The RFID-based welding robot system according to claim 1, characterized in that: The process parameter system includes: A database storing model information and welding parameters of the workpiece; A matching module is used to match the welding parameters corresponding to the model information according to the database and output the welding parameters.

7. The RFID-based welding robot system according to claim 1, characterized in that: The welding robot assembly comprises: A robotic arm for picking up and welding the workpiece; The control module is used to receive the welding parameters and adjust the operating parameters of the robot arm according to the welding parameters.

8. The RFID-based welding robot system according to any one of claims 1 to 7, characterized in that: The RFID tag includes an RFID nickel-cobalt tag.

9. The RFID-based welding robot system according to claim 8, characterized in that: The RFID reader / writer comprises: A scanning module, used for scanning the model information carried on the RFID tag; An Ethernet module, connected to the scanning module; The Ethernet module controls the start and stop of the scanning module by connecting or disconnecting from the network.

10. The RFID-based welding robot system according to any one of claims 1 to 7, characterized in that: RFID tags include: A base layer and a covering layer, wherein the base layer and the covering layer are arranged opposite to each other; An interlayer, disposed between the base layer and the cover layer; The radio frequency circuit is arranged in the interlayer.

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