Wireless wire feeding method and system suitable for laser welding

Abstract

The present invention relates to the technical field of automatic welding wire feeding, a wireless wire feeding method and system suitable for laser welding, comprising: constructing a wireless wire feeding unit, confirming a welding point in a laser welding host, using the wireless wire feeding unit to feed the welding wire to the welding point, if it is confirmed that the welding wire has reached the welding point, using the laser welding host to weld the welding wire, obtaining welding parameters during the welding process, and counting the welding wire parameters in the wireless wire feeding unit, based on the welding parameters and the welding wire parameters, obtaining a predicted welding speed, performing a wire feeding speed comparison according to the predicted welding speed, obtaining a speed difference value, when the speed difference value is greater than a standard speed difference value, performing speed adjustment based on the predicted welding speed, obtaining an adjustment wire feeding unit, and when it is not greater than, recording the wireless wire feeding unit as an adjustment wire feeding unit. The present invention can improve the stability and efficiency of wire feeding during laser welding.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic welding wire feeding, and in particular to a wireless wire feeding method and system suitable for laser welding. Background Art

[0002] With the continuous development of industrial manufacturing technology, laser welding has been widely used in aerospace, automobile manufacturing, electronic equipment, mechanical processing and other fields due to its advantages such as high energy density, fast welding speed, small heat-affected zone and the ability to achieve complex shape welding. In the laser welding process, it is extremely important to maintain timely and stable delivery of the welding wire.

[0003] At present, the wire feeding in the laser welding process is mainly achieved by transporting the welding wire through a wire feeding device. This method requires a large number of transmission wire connections, which makes the wire feeding process less efficient. At the same time, a large number of wires will make the wire contact and wire breakage problems more obvious, thereby reducing the stability of the wire feeding. Summary of the invention

[0004] The present invention provides a wireless wire feeding method and system suitable for laser welding, the main purpose of which is to improve the stability and efficiency of welding wire feeding during laser welding.

[0005] To achieve the above object, the present invention provides a wireless wire feeding method suitable for laser welding, comprising:

[0006] Receive a laser welding instruction, and construct a wireless wire feeding unit based on the laser welding instruction, wherein the wireless wire feeding unit includes a plurality of wireless wire feeding devices, and the wireless wire feeding devices include: a driving board power supply, a wire feeding motor and a wireless device, and adjacent wireless wire feeding devices among the plurality of wireless wire feeding devices are connected via a synchronization line;

[0007] Identify a welding point in a pre-built laser welding host, and use a wireless wire feeding unit to deliver a pre-acquired welding wire to the welding point;

[0008] If it is confirmed that the welding wire reaches the welding point, the welding wire is welded by using a laser welding host, and welding parameters in the welding process are obtained, and welding wire parameters in the wireless wire feeding unit are counted, wherein the welding parameters include: laser power, welding temperature and ambient temperature, and the welding wire parameters include: welding wire diameter, welding wire specific heat capacity and welding wire density;

[0009] Predicting the welding speed based on the welding parameters and the welding wire parameters to obtain the predicted welding speed;

[0010] According to the predicted welding speed, the wire feeding speed is compared to obtain the speed difference value;

[0011] When the speed difference value is greater than a preset standard speed difference value, the speed of the wireless wire feeding unit is adjusted based on the predicted welding speed to obtain an adjusted wire feeding unit;

[0012] When the speed difference value is not greater than the standard speed difference value, the wireless wire feeding unit is recorded as an adjustable wire feeding unit;

[0013] Based on the adjustment of the wire feeding unit, wireless wire feeding suitable for laser welding is completed.

[0014] Optionally, the construction of the wireless wire feeding unit includes:

[0015] Identifying a wire feeding distance between the welding point and a preset wire feeder, and determining the number of wire feeding devices based on the wire feeding distance;

[0016] Acquire multiple wireless wire feeding devices according to the number of wire feeding devices, wherein the number of wireless wire feeding devices in the multiple wireless wire feeding devices is the same as the number of wire feeding devices, and in the wireless wire feeding devices, the wireless devices and the wire feeding motors are both connected to the driving board power supply;

[0017] Using the synchronization line to connect multiple wireless devices in the multiple wireless wire feeding devices to obtain a wireless wire feeding device cluster, wherein the synchronization line is a two-core wire;

[0018] The construction of a wireless wire feeding unit is completed based on the wireless wire feeding device cluster.

[0019] Optionally, the using a wireless wire feeding unit to deliver the pre-acquired welding wire to the welding point comprises:

[0020] Starting the wireless wire feeding unit;

[0021] Determine an initial wire feeding speed according to the wire feeding distance, generate an initial speed control instruction based on the initial wire feeding speed, and send the initial speed control instruction to the started wireless wire feeding unit;

[0022] When the wireless wire feeding unit receives the initial speed control instruction after being started, the motor speed of the wireless wire feeding unit is synchronized to obtain a synchronous wire feeding unit;

[0023] The welding wire is fed to the welding point by a synchronous wire feeding unit.

[0024] Optionally, starting the wireless wire feeding unit includes:

[0025] Sending preset device startup instructions to multiple wireless devices in the wireless wire feeding unit respectively, and identifying a first wireless device that first responds to the device startup instruction among the multiple wireless devices;

[0026] Determine in the wireless wire feeding unit a first wire feeding device corresponding to the first wireless device, and start a first driving board power supply of the first wire feeding device;

[0027] Identify the unresponsive device set of the wireless wire feeder unit;

[0028] Based on the first wire feeding device and the synchronization line, the device startup instruction is transmitted to each unresponsive device in the unresponsive device set respectively;

[0029] If it is confirmed that the unresponsive device in the unresponsive device set has received the device startup instruction, the unresponsive power supply corresponding to the unresponsive device is started. When the unresponsive power supplies corresponding to all the unresponsive devices in the unresponsive device set and the first drive board power supply are started, the startup of the wireless wire feeding unit is completed.

[0030] Optionally, synchronizing the motor speed of the wireless wire feeding unit to obtain a synchronous wire feeding unit includes:

[0031] Sequentially extracting wireless wire feeding devices from the wireless wire feeding unit, and detecting the actual motor speed of the wire feeding motor in the wireless wire feeding device;

[0032] Obtaining a transmission radius of the wireless wire feeding device;

[0033] The initial motor speed is calculated according to the transmission radius and the initial wire feeding speed, wherein the initial motor speed is expressed as:

[0034] ;

[0035] in, Indicates the initial motor speed, Indicates the initial wire feeding speed, represents pi, Represents the transmission radius, Indicates the preset friction factor;

[0036] Summarizing the actual motor speed and the initial motor speed respectively to obtain an actual motor speed set and an initial motor speed set;

[0037] Calculating the synchronous motor speed based on the actual motor speed set and the initial motor speed set;

[0038] The rotation speeds of the multiple wireless wire feeding devices in the synchronous wire feeding unit are synchronized according to the rotation speed of the synchronous motor to obtain a synchronous wire feeding unit.

[0039] Optionally, the calculating the synchronous motor speed based on the actual motor speed set and the initial motor speed set includes:

[0040] Extracting the actual motor speed and the initial motor speed from the actual motor speed set and the initial motor speed set respectively;

[0041] Calculating a speed vector difference between the actual motor speed and the initial motor speed, wherein the speed vector difference is calculated by subtracting the initial motor speed from the actual motor speed;

[0042] Summarizing the speed vector differences to obtain a speed vector difference set;

[0043] The average vector difference of the speed vector difference set and the average motor speed of the initial motor speed set are calculated respectively, and the synchronous motor speed is calculated based on the average vector difference and the average motor speed, wherein the synchronous motor speed is the sum of the average vector difference and the average motor speed.

[0044] Optionally, the obtaining welding parameters in the welding process includes:

[0045] Using a pre-built laser power sensor to measure the laser power of the laser welding host, and using a pre-built temperature sensor to measure the ambient temperature and the welding temperature of the welding port;

[0046] Counting the welding wire set to be welded in the wireless wire feeding unit, and obtaining the welding wire parameter set to be welded of the welding wire set to be welded, wherein the welding wire set to be welded includes one or more welding wires to be welded, the welding wire parameters to be welded correspond to the welding wires to be welded one by one, and the welding wire parameters to be welded include: the diameter of the welding wire to be welded, the specific heat capacity of the welding wire to be welded, and the density of the welding wire to be welded;

[0047] Based on the welding wire parameter set to be welded, the average welding wire diameter, the average welding wire specific heat capacity and the average welding wire density are calculated, and the average welding wire diameter, the average welding wire specific heat capacity and the average welding wire density are recorded as welding wire diameter, welding wire specific heat capacity and welding wire density respectively.

[0048] Optionally, predicting the welding speed based on the welding parameters and the welding wire parameters to obtain the predicted welding speed includes:

[0049] The predicted welding speed is calculated using the following formula:

[0050] ;

[0051] in, represents the predicted welding speed, Indicates the preset welding efficiency, Indicates welding power, Indicates the density of welding wire, Indicates the wire diameter, Indicates the specific heat capacity of welding wire, Indicates the welding temperature, Indicates the ambient temperature.

[0052] Optionally, performing wire feeding speed comparison according to the predicted welding speed to obtain a speed difference value includes:

[0053] Detecting an original welding period during the welding process of the welding wire;

[0054] The original welding time period is divided to obtain a divided welding time period set, the divided welding time periods are sequentially extracted from the divided welding time period set, and the unit welding wire length completed by the wireless wire feeding unit in the divided welding time period is obtained;

[0055] Based on the separated welding time periods and the unit welding wire length, a separated wire feeding speed is calculated, and the separated wire feeding speeds are summarized to obtain a separated wire feeding speed set;

[0056] According to the separated wire feeding speed set and the predicted welding speed, a speed difference value is calculated, wherein the speed difference value is expressed as:

[0057] ;

[0058] in, Indicates the speed difference value, Indicates the number of wire feed speeds in the separation wire feed speed concentration. Indicates the separation wire feed speed concentration Separate wire feed speeds.

[0059] To achieve the above object, the present invention also provides a wireless wire feeding system suitable for laser welding, comprising:

[0060] A wire feeding unit construction module, used for receiving a laser welding instruction, and constructing a wireless wire feeding unit based on the laser welding instruction, wherein the wireless wire feeding unit includes a plurality of wireless wire feeding devices, and the wireless wire feeding devices include: a driving board power supply, a wire feeding motor and a wireless device, and adjacent wireless wire feeding devices among the plurality of wireless wire feeding devices are connected via a synchronization line;

[0061] A welding parameter acquisition module is used to confirm a welding point in a pre-built laser welding host, and use a wireless wire feeding unit to deliver a pre-acquired welding wire to the welding point. If it is confirmed that the welding wire has reached the welding point, the laser welding host is used to weld the welding wire, and the welding parameters in the welding process are obtained, and the welding wire parameters in the wireless wire feeding unit are counted, wherein the welding parameters include: laser power, welding temperature and ambient temperature, and the welding wire parameters include: welding wire diameter, welding wire specific heat capacity and welding wire density;

[0062] A speed difference calculation module is used to predict the welding speed based on the welding parameters and the welding wire parameters to obtain the predicted welding speed, and to compare the wire feeding speed according to the predicted welding speed to obtain the speed difference value;

[0063] The wire feeding speed adjustment module is used to adjust the speed of the wireless wire feeding unit based on the predicted welding speed when the speed difference value is greater than the preset standard speed difference value, so as to obtain an adjusted wire feeding unit; when the speed difference value is not greater than the standard speed difference value, the wireless wire feeding unit is recorded as an adjusted wire feeding unit.

[0064] In order to solve the above problem, the present invention further provides an electronic device, the electronic device comprising:

[0065] A memory storing at least one instruction;

[0066] The processor executes the instructions stored in the memory to implement the wireless wire feeding method suitable for laser welding as described above.

[0067] In order to solve the above problems, the present invention also provides a computer-readable storage medium, in which at least one instruction is stored. The at least one instruction is executed by a processor in an electronic device to implement the above-mentioned wireless wire feeding method suitable for laser welding.

[0068] In order to solve the problems described in the background technology, the present invention first constructs a wireless wire feeding unit. Multiple wireless devices in the wireless wire feeding unit can form a network by themselves, so as to transmit motor operation signals and communicate with the laser welding host, thereby eliminating the wired connection between the traditional wire feeding unit and the laser welding machine host and the wire feeding machine. Since there is no need for a wired connection between the laser welding host and the wireless device, the wireless wire feeding unit can be closer to the welding area, thereby improving the wire feeding efficiency. At the same time, because the wireless wire feeding unit uses a lithium battery as a built-in power source, it can completely get rid of the connection trouble of multiple power transmission lines. In order to overcome the transmission delay between wireless communications, the present invention further The invention introduces a specific method for solving the wireless transmission delay through a synchronization line, that is, the first wireless wire feeding device that receives the wireless command transmits the command through the synchronization line to other wireless wire feeding devices that have not received the command. This method completely overcomes the physical delay problem between wireless transmissions, thereby improving the wire feeding stability of the wireless wire feeding unit. Finally, the invention obtains the predicted welding speed through welding parameters and welding wire parameters, and adjusts the wire feeding speed of the wireless wire feeding unit according to the predicted welding speed to obtain an adjusted wire feeding unit. This adjustment method enables the wireless wire feeding unit to automatically adjust the wire feeding speed according to the actual welding environment, thereby greatly improving the stability and efficiency of wire feeding. Therefore, the invention can improve the stability and efficiency of wire feeding during laser welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] Figure 1 A schematic flow chart of a wireless wire feeding method for laser welding provided in one embodiment of the present invention;

[0070] Figure 2 A functional module diagram of a wireless wire feeding system suitable for laser welding provided by an embodiment of the present invention;

[0071] Figure 3 A schematic structural diagram of an electronic device for implementing the wireless wire feeding method suitable for laser welding provided in one embodiment of the present invention.

[0072] Description of reference numerals:

[0073] 1. Electronic device; 10. Processor; 11. Memory; 12. Bus.

[0074] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0075] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0076] The embodiment of the present application provides a wireless wire feeding method suitable for laser welding. The execution subject of the wireless wire feeding method suitable for laser welding includes but is not limited to at least one of the electronic devices such as a server and a terminal that can be configured to execute the method provided in the embodiment of the present application. In other words, the wireless wire feeding method suitable for laser welding can be executed by software or hardware installed in a terminal device or a server device, and the software can be a blockchain platform. The server includes but is not limited to: a single server, a server cluster, a cloud server or a cloud server cluster, etc.

[0077] Reference Figure 1 FIG. 1 is a flow chart of a wireless wire feeding method for laser welding provided by an embodiment of the present invention. In this embodiment, the wireless wire feeding method for laser welding includes:

[0078] S1. Receive laser welding instructions, and construct a wireless wire feeding unit based on the laser welding instructions, wherein the wireless wire feeding unit includes multiple wireless wire feeding devices, and the wireless wire feeding devices include: a driving board power supply, a wire feeding motor and a wireless device, and adjacent wireless wire feeding devices among the multiple wireless wire feeding devices are connected by a synchronization line.

[0079] It is understandable that the laser welding instruction refers to an instruction initiated manually for laser welding, and the wireless wire feeding unit refers to a conveying device that can convey the welding wire from the wire feeder to the welding point. Compared with the traditional wire feeding unit that relies on wired signal transmission, the wireless wire feeding unit is equipped with a wireless communication device, which can greatly reduce the transmission wire, thereby greatly improving the efficiency and simplicity of the wire feeding process. The wireless wire feeding unit includes multiple wireless wire feeding devices, wherein each wireless wire feeding device includes a driving board power supply: it is used to provide power for the wire feeding motor and the wireless device, optionally, a lithium battery is used as the driving board power supply, a wire feeding motor: it can provide mechanical power for the welding wire transportation, a wireless device: it is used to transmit the operation signal of the wire feeding motor, optionally, BLE, Zigbee, LORA and other devices can be selected as the wireless device, and the wireless devices in the multiple wireless wire feeding devices can form a network by themselves and communicate with the laser welding host.

[0080] It can be understood that the synchronization line is a two-core wire, which is used to synchronize signals between multiple wireless wire feeding devices. Since the wireless transmission delay is about 10~50ms, this will cause the multiple wire feeding motors in the multiple wireless wire feeding devices to not start and stop synchronously. In order to solve this problem, a synchronization line can be connected between multiple wireless devices of the multiple wireless wire feeding devices. When a wireless wire feeding device among the multiple wireless wire feeding devices receives a wireless transmission command, the wireless wire feeding device will synchronize the command to other wireless wire feeding devices that have not received the command through the synchronization line. The command transmitted by the synchronization line will be regarded as the highest-level command, that is, when the wireless wire feeding device receives the highest-level command through the synchronization line, it will directly execute the highest-level command, and will ignore the next received wireless transmission command that is the same as the highest-level command.

[0081] In detail, the construction of the wireless wire feeding unit includes:

[0082] Identifying a wire feeding distance between the welding point and a preset wire feeder, and determining the number of wire feeding devices based on the wire feeding distance;

[0083] Acquire multiple wireless wire feeding devices according to the number of wire feeding devices, wherein the number of wireless wire feeding devices in the multiple wireless wire feeding devices is the same as the number of wire feeding devices, and in the wireless wire feeding devices, the wireless devices and the wire feeding motors are both connected to the driving board power supply;

[0084] Using the synchronization line to connect multiple wireless devices in the multiple wireless wire feeding devices to obtain a wireless wire feeding device cluster, wherein the synchronization line is a two-core wire;

[0085] The construction of a wireless wire feeding unit is completed based on the wireless wire feeding device cluster.

[0086] It can be understood that the wire feeder refers to a device used to provide welding wire, and the number of wire feeding devices refers to the number of wireless wire feeding devices among multiple wireless wire feeding devices acquired subsequently. The number of wire feeding devices is determined manually. For example: when the wire feeding distance is a, and the wire feeding distance that each wireless wire feeding device can transmit is b, the wire feeding device at this time can be determined as: a / b.

[0087] It can be understood that the wireless device and the wire feeding motor are both connected to the driving board power supply to emphasize that the driving board power supply can provide power for the wireless device and the wire feeding motor without any limitation on the specific connection method. Similarly, the synchronization line connects multiple wireless devices to emphasize that the synchronization line can transmit information among multiple wireless wire feeding devices. The wireless wire feeding device cluster refers to multiple wireless wire feeding devices connected by a synchronization line. At this time, the wireless wire feeding device cluster is a wireless wire feeding unit.

[0088] S2. Identify a welding point in a pre-built laser welding host, and use a wireless wire feeding unit to deliver a pre-acquired welding wire to the welding point.

[0089] It can be understood that the laser welding host is a device that generates a laser beam for laser welding, the welding point refers to the specific location where laser welding is required, and the welding wire refers to the welding wire that needs to be transported. It should be noted that more than one welding wire can be transported at the same time.

[0090] In detail, the method of using a wireless wire feeding unit to deliver the pre-acquired welding wire to the welding point includes:

[0091] Starting the wireless wire feeding unit;

[0092] Determine an initial wire feeding speed according to the wire feeding distance, generate an initial speed control instruction based on the initial wire feeding speed, and send the initial speed control instruction to the started wireless wire feeding unit;

[0093] When the wireless wire feeding unit receives the initial speed control instruction after being started, the motor speed of the wireless wire feeding unit is synchronized to obtain a synchronous wire feeding unit;

[0094] The welding wire is fed to the welding point by a synchronous wire feeding unit.

[0095] It can be understood that the initial wire feeding speed refers to the speed at which the wireless wire feeding unit runs the welding wire, which is set manually. The specific method of obtaining it is: the running time for transporting the welding wire from the wire feeder to the welding point is manually determined, and then the wire feeding distance is divided by the running time to obtain the initial wire feeding speed. The initial speed control instruction refers to an instruction that can be received by the wireless device in the wireless wire feeding unit. The motor speed synchronization refers to adjusting the wireless motor speeds of multiple wireless wire feeding devices in the wireless wire feeding unit to the same value. The purpose of this step is to ensure the stable operation of the welding wire during operation. The synchronous wire feeding unit refers to the wireless wire feeding unit after motor speed synchronization.

[0096] In detail, starting the wireless wire feeding unit includes:

[0097] Sending preset device startup instructions to multiple wireless devices in the wireless wire feeding unit respectively, and identifying a first wireless device that first responds to the device startup instruction among the multiple wireless devices;

[0098] Determine in the wireless wire feeding unit a first wire feeding device corresponding to the first wireless device, and start a first driving board power supply of the first wire feeding device;

[0099] Identify the unresponsive device set of the wireless wire feeder unit;

[0100] Based on the first wire feeding device and the synchronization line, the device startup instruction is transmitted to each unresponsive device in the unresponsive device set respectively;

[0101] If it is confirmed that the unresponsive device in the unresponsive device set has received the device startup instruction, the unresponsive power supply corresponding to the unresponsive device is started. When the unresponsive power supplies corresponding to all the unresponsive devices in the unresponsive device set and the first drive board power supply are started, the startup of the wireless wire feeding unit is completed.

[0102] It can be understood that the device startup instruction refers to an instruction manually initiated to start the wireless wire feeding device, and the device startup instruction can be received by the wireless device in the wireless wire feeding unit. The first wireless device refers to the first wireless device that responds to the device startup instruction. The first wire feeding device refers to the wireless wire feeding device corresponding to the first wireless device. The first drive board power supply refers to the drive board power supply in the first wire feeding device. The unresponsive device set refers to the wireless wire feeding devices in the wireless wire feeding unit that have not responded to the device startup instruction. The unresponsive power supply refers to the drive board power supply in the unresponsive device.

[0103] In detail, the motor speed synchronization of the wireless wire feeding unit is performed to obtain a synchronous wire feeding unit, including:

[0104] Sequentially extracting wireless wire feeding devices from the wireless wire feeding unit, and detecting the actual motor speed of the wire feeding motor in the wireless wire feeding device;

[0105] Obtaining a transmission radius of the wireless wire feeding device;

[0106] The initial motor speed is calculated according to the transmission radius and the initial wire feeding speed, wherein the initial motor speed is expressed as:

[0107] ;

[0108] in, Indicates the initial motor speed, Indicates the initial wire feeding speed, represents pi, Represents the transmission radius, Indicates the preset friction factor;

[0109] Summarizing the actual motor speed and the initial motor speed respectively to obtain an actual motor speed set and an initial motor speed set;

[0110] Calculating the synchronous motor speed based on the actual motor speed set and the initial motor speed set;

[0111] The rotation speeds of the multiple wireless wire feeding devices in the synchronous wire feeding unit are synchronized according to the rotation speed of the synchronous motor to obtain a synchronous wire feeding unit.

[0112] It can be understood that the actual motor speed refers to the speed of the wire feeding motor in the wireless wire feeding device, and the actual motor speed can be collected by a speed sensor built into the wire feeding motor. The transmission radius refers to half of the longest distance that the wireless wire feeding device can transmit. The initial motor speed refers to the theoretical speed of the wire feeding motor calculated by the transmission radius and the initial wire feeding speed. The friction factor refers to the friction factor that the welding wire is subjected to in the wireless wire feeding unit, and the friction factor is measured in advance by humans. Since the speeds of the wire feeding motors of different wireless wire feeding devices are not exactly the same at the beginning of startup, the speed at which each wireless wire feeding device transmits the welding wire is also different, that is, the wire feeding speeds of different wireless wire feeding devices will not be completely equal to the initial wire feeding speed, because the initial wire feeding speed is the overall wire feeding speed of all wireless wire feeding devices, which results in the initial motor speed calculated based on the initial wire feeding speed not being equal to the actual motor speed. When the actual motor speeds of each wire feeding motor differ for a long time, the overall wire feeding process will be relatively slow, and the transported welding wire will be locally accumulated. Therefore, it is necessary to synchronize the motor speeds of each wire feeding motor so that the wire feeding speeds of each wireless wire feeding device are synchronized.

[0113] It can be understood that the actual motor speed set and the initial motor speed set refer to the set of actual motor speeds and the set of initial motor speeds respectively, the synchronous motor speed refers to the motor speed calculated by the actual motor speed set and the initial motor speed set, and the speed synchronization of multiple wireless wire feeding devices in the synchronous wire feeding unit according to the synchronous motor speed refers to adjusting the speeds of multiple wire feeding motors in the multiple wireless wire feeding devices to the synchronous motor speed.

[0114] In detail, the calculating of the synchronous motor speed based on the actual motor speed set and the initial motor speed set includes:

[0115] Extracting the actual motor speed and the initial motor speed from the actual motor speed set and the initial motor speed set respectively;

[0116] Calculating a speed vector difference between the actual motor speed and the initial motor speed, wherein the speed vector difference is calculated by subtracting the initial motor speed from the actual motor speed;

[0117] Summarizing the speed vector differences to obtain a speed vector difference set;

[0118] The average vector difference of the speed vector difference set and the average motor speed of the initial motor speed set are calculated respectively, and the synchronous motor speed is calculated based on the average vector difference and the average motor speed, wherein the synchronous motor speed is the sum of the average vector difference and the average motor speed.

[0119] It can be understood that the speed vector difference refers to the value obtained by subtracting the initial motor speed from the actual motor speed. When the actual motor speed is less than the initial motor speed, the speed vector difference will be a negative number. The speed vector difference set refers to the set of speed vector differences. The average vector difference refers to the average of all speed vector differences in the speed vector difference set. The average motor speed refers to the average of all initial motor speeds in the initial motor speed set.

[0120] S3. If it is confirmed that the welding wire reaches the welding point, the welding wire is welded using a laser welding host, and welding parameters during the welding process are obtained, and the welding wire parameters in the wireless wire feeding unit are counted, wherein the welding parameters include: laser power, welding temperature and ambient temperature, and the welding wire parameters include: welding wire diameter, welding wire specific heat capacity and welding wire density.

[0121] It can be understood that the laser power refers to the amount of laser energy output by the laser welding host during the welding process, the welding temperature refers to the actual temperature of the welding wire and the surface of the workpiece to be welded during the welding process, the ambient temperature refers to the temperature of the environment in which the welding is performed, the welding wire diameter refers to the diameter of the welding wire in the wireless wire feeding unit. Since there may be more than one type of welding wire in the wireless wire feeding unit, the welding wire diameter needs to be obtained by calculation, the welding wire specific heat capacity and welding wire density respectively refer to the specific heat capacity and density of the welding wire in the wireless wire feeding unit. Similarly, the welding wire specific heat capacity and welding wire density need to be obtained by calculation, and the calculation process of the above-mentioned welding wire diameter, welding wire specific heat capacity and welding wire density will be given in subsequent steps.

[0122] In detail, the obtaining of welding parameters during the welding process includes:

[0123] Using a pre-built laser power sensor to measure the laser power of the laser welding host, and using a pre-built temperature sensor to measure the ambient temperature and the welding temperature of the welding port;

[0124] Counting the welding wire set to be welded in the wireless wire feeding unit, and obtaining the welding wire parameter set to be welded of the welding wire set to be welded, wherein the welding wire set to be welded includes one or more welding wires to be welded, the welding wire parameters to be welded correspond to the welding wires to be welded one by one, and the welding wire parameters to be welded include: the diameter of the welding wire to be welded, the specific heat capacity of the welding wire to be welded, and the density of the welding wire to be welded;

[0125] Based on the welding wire parameter set to be welded, the average welding wire diameter, the average welding wire specific heat capacity and the average welding wire density are calculated, and the average welding wire diameter, the average welding wire specific heat capacity and the average welding wire density are recorded as welding wire diameter, welding wire specific heat capacity and welding wire density respectively.

[0126] It is understandable that the laser power sensor refers to a sensor for measuring laser power, for example, a photodiode laser power sensor can be selected as the laser power sensor, and the temperature sensor refers to a sensor for measuring temperature, for example, a thermocouple temperature sensor can be selected as the temperature sensor. The set of welding wires to be welded refers to a set of one or more welding wires in the wireless wire feeding unit, the diameter of the welding wires to be welded, the specific heat capacity of the welding wires to be welded and the density of the welding wires to be welded refer to the diameter, specific heat capacity and density of the welding wires to be welded respectively, the average welding wire diameter refers to the average value of the diameters of all welding wires to be welded in the welding wire parameter set, the average welding wire specific heat capacity refers to the average value of the specific heat capacity of all welding wires to be welded in the welding wire parameter set, and the average welding wire density refers to the average value of the densities of all welding wires to be welded in the welding wire parameter set.

[0127] S4. Predict the welding speed based on the welding parameters and the welding wire parameters to obtain a predicted welding speed.

[0128] It should be explained that the predicted welding speed refers to the welding speed obtained through welding parameters and welding wire parameters, wherein the unit of the welding speed is the same as the unit of the wire feeding speed, both of which are meters per second. The welding wire in the wireless wire feeding unit is the welding wire that is about to be welded. In order to ensure that the welding speed of the subsequent laser welding host for laser welding matches the wire feeding speed of the wireless wire feeding unit, it is necessary to predict the welding speed of the subsequent laser welding host, and compare the predicted welding speed with the current wire feeding speed to better provide welding wire for subsequent welding.

[0129] In detail, the prediction of the welding speed based on the welding parameters and the welding wire parameters to obtain the predicted welding speed includes:

[0130] The predicted welding speed is calculated using the following formula:

[0131] ;

[0132] in, represents the predicted welding speed, Indicates the preset welding efficiency, Indicates welding power, Indicates the density of welding wire, Indicates the wire diameter, Indicates the specific heat capacity of welding wire, Indicates the welding temperature, Indicates the ambient temperature.

[0133] It can be understood that the welding efficiency refers to the artificially set welding efficiency of the laser welding host, and the welding efficiency can be queried from the product specifications of the laser welding host.

[0134] S5. Compare the wire feeding speeds according to the predicted welding speeds to obtain a speed difference value.

[0135] It can be understood that the speed difference value refers to the value obtained after the wire feeding speed comparison, which represents the difference between the speed of subsequent welding performed by the laser welding host and the speed of wire feeding performed by the current wireless wire feeding unit. The larger the speed difference value, the greater the difference between the speed of subsequent welding and the current wire feeding speed. The smaller the speed difference value, the smaller the difference between the speed of subsequent welding and the current wire feeding speed. The wire feeding speed comparison refers to the process of comparing the predicted welding speed with the wire feeding speed of the current wireless wire feeding unit to obtain the speed difference value.

[0136] In detail, the wire feeding speed comparison is performed according to the predicted welding speed to obtain the speed difference value, including:

[0137] Detecting an original welding period during the welding process of the welding wire;

[0138] The original welding time period is divided to obtain a divided welding time period set, the divided welding time periods are sequentially extracted from the divided welding time period set, and the unit welding wire length completed by the wireless wire feeding unit in the divided welding time period is obtained;

[0139] Based on the separated welding time periods and the unit welding wire length, a separated wire feeding speed is calculated, and the separated wire feeding speeds are summarized to obtain a separated wire feeding speed set;

[0140] According to the separated wire feeding speed set and the predicted welding speed, a speed difference value is calculated, wherein the speed difference value is expressed as:

[0141] ;

[0142] in, Indicates the speed difference value, Indicates the number of wire feed speeds in the separation wire feed speed concentration. Indicates the separation wire feed speed concentration Separate wire feed speeds.

[0143] It can be understood that the original welding time period refers to the total welding time of welding, for example, the time of a certain welding is: 9:00 to 9:10, then the original welding time period of this welding is 9:00 to 9:10, the separated welding time period set refers to a plurality of time period sets obtained after the original welding time period is separated, and the separation refers to dividing the original welding time period into separated welding time period sets evenly according to a preset number of separations, wherein the number of separations is set manually, the number of separated welding time periods in the separated welding time period set is the same as the number of separations, and the time is continuous in the same separated welding time period, for example, the original welding time period is 9:00 to 9:10, and the number of separations set manually is 2, then the original welding time period is continuously and evenly divided into two separated welding time periods: 9:00 to 9:05 and 9:05 to 9:10.

[0144] It needs to be explained that the unit welding wire length refers to the length of welding wire that has been delivered by the wireless wire feeding unit within the divided welding time period. The unit welding wire length can be obtained in the work log of the wire feeder. The divided wire feeding speed refers to the ratio of the unit welding wire length to the total duration of the divided welding time period. The divided wire feeding speed concentrates on the collection of divided wire feeding speeds.

[0145] S6. When the speed difference value is greater than a preset standard speed difference value, the speed of the wireless wire feeding unit is adjusted based on the predicted welding speed to obtain an adjusted wire feeding unit.

[0146] It can be understood that the standard speed difference value refers to an artificially set speed difference value constant. When the speed difference value is greater than the standard speed difference value, it means that the wire feeding speed of the current wireless wire feeding unit has a large difference from the speed of the subsequent laser welding host during welding. At this time, the wire feeding speed of the wireless wire feeding unit needs to be adjusted. The adjusted wire feeding unit refers to the wireless wire feeding unit after speed adjustment.

[0147] It should be explained that adjusting the speed of the wireless wire feeding unit based on the predicted welding speed means adjusting the rotation speeds of multiple wire feeding motors of multiple wireless wire feeding devices in the wireless wire feeding unit to be the same as the predicted welding speed.

[0148] S7. When the speed difference value is not greater than the standard speed difference value, the wireless wire feeding unit is recorded as an adjusted wire feeding unit.

[0149] It can be understood that when the speed difference value is not greater than the standard speed difference value, it means that the difference between the wire feeding speed of the current wireless wire feeding unit and the speed of the subsequent laser welding host during welding is within a controllable error range. In order to ensure the efficiency of subsequent welding, there is no need to adjust the speed of the current wireless wire feeding unit, that is, the wireless wire feeding unit at this time can be directly recorded as an adjusted wire feeding unit.

[0150] S8. Based on the adjustment of the wire feeding unit, wireless wire feeding suitable for laser welding is completed.

[0151] It should be explained that adjusting the wire feeding unit through speed regulation can ensure that the wire feeding speed is consistent with the subsequent welding speed. Therefore, adjusting the wire feeding unit for wire feeding can improve the welding quality while enhancing the stability and reliability of the welding process.

[0152] In order to solve the problems described in the background technology, the present invention first constructs a wireless wire feeding unit. Multiple wireless devices in the wireless wire feeding unit can form a network by themselves, so as to transmit motor operation signals and communicate with the laser welding host, thereby eliminating the wired connection between the traditional wire feeding unit and the laser welding machine host and the wire feeding machine. Since there is no need for a wired connection between the laser welding host and the wireless device, the wireless wire feeding unit can be closer to the welding area, thereby improving the wire feeding efficiency. At the same time, because the wireless wire feeding unit uses a lithium battery as a built-in power source, it can completely get rid of the connection trouble of multiple power transmission lines. In order to overcome the transmission delay between wireless communications, the present invention further The invention introduces a specific method for solving the wireless transmission delay through a synchronization line, that is, the first wireless wire feeding device that receives the wireless command transmits the command through the synchronization line to other wireless wire feeding devices that have not received the command. This method completely overcomes the physical delay problem between wireless transmissions, thereby improving the wire feeding stability of the wireless wire feeding unit. Finally, the invention obtains the predicted welding speed through welding parameters and welding wire parameters, and adjusts the wire feeding speed of the wireless wire feeding unit according to the predicted welding speed to obtain an adjusted wire feeding unit. This adjustment method enables the wireless wire feeding unit to automatically adjust the wire feeding speed according to the actual welding environment, thereby greatly improving the stability and efficiency of wire feeding. Therefore, the invention can improve the stability and efficiency of wire feeding during laser welding.

[0153] like Figure 2 , which is a functional module diagram of a wireless wire feeding system suitable for laser welding provided in one embodiment of the present invention.

[0154] The wireless wire feeding system 100 for laser welding of the present invention can be installed in an electronic device. According to the functions to be implemented, the wireless wire feeding system 100 for laser welding can include a wire feeding unit construction module 101, a welding parameter acquisition module 102, a speed difference calculation module 103 and a wire feeding speed adjustment module 104. The module of the present invention can also be referred to as a unit, which refers to a series of computer program segments that can be executed by an electronic device processor and can complete fixed functions, which are stored in the memory of the electronic device.

[0155] The wire feeding unit construction module 101 is used to receive a laser welding instruction and construct a wireless wire feeding unit based on the laser welding instruction, wherein the wireless wire feeding unit includes a plurality of wireless wire feeding devices, and the wireless wire feeding devices include: a driving board power supply, a wire feeding motor and a wireless device, and adjacent wireless wire feeding devices among the plurality of wireless wire feeding devices are connected via a synchronization line;

[0156] The welding parameter acquisition module 102 is used to confirm the welding point in the pre-built laser welding host, and use the wireless wire feeding unit to deliver the pre-acquired welding wire to the welding point. If it is confirmed that the welding wire reaches the welding point, the laser welding host is used to weld the welding wire, and the welding parameters in the welding process are obtained, and the welding wire parameters in the wireless wire feeding unit are counted, wherein the welding parameters include: laser power, welding temperature and ambient temperature, and the welding wire parameters include: welding wire diameter, welding wire specific heat capacity and welding wire density;

[0157] The speed difference calculation module 103 is used to predict the welding speed based on the welding parameters and the welding wire parameters to obtain the predicted welding speed, and compare the wire feeding speed according to the predicted welding speed to obtain the speed difference value;

[0158] The wire feeding speed adjustment module 104 is used to adjust the speed of the wireless wire feeding unit based on the predicted welding speed to obtain an adjusted wire feeding unit when the speed difference value is greater than a preset standard speed difference value. When the speed difference value is not greater than the standard speed difference value, the wireless wire feeding unit is recorded as an adjusted wire feeding unit.

[0159] In detail, each module in the wireless wire feeding system 100 for laser welding in the embodiment of the present invention is used in the same manner as described above. Figure 1 The wireless wire feeding method suitable for laser welding described in the invention has the same technical means and can produce the same technical effects, so it will not be repeated here.

[0160] like Figure 3 , which is a schematic diagram of the structure of an electronic device for implementing a wireless wire feeding method suitable for laser welding provided by an embodiment of the present invention.

[0161] The electronic device 1 may include a processor 10, a memory 11 and a bus 12, and may also include a computer program stored in the memory 11 and executable on the processor 10, such as a wireless wire feeding method program suitable for laser welding.

[0162] The memory 11 includes at least one type of readable storage medium, and the readable storage medium includes a flash memory, a mobile hard disk, a multimedia card, a card-type memory (for example, an SD or DX memory, etc.), a magnetic memory, a disk, an optical disk, etc. In some embodiments, the memory 11 may be an internal storage unit of the electronic device 1, such as a mobile hard disk of the electronic device 1. In other embodiments, the memory 11 may also be an external storage device of the electronic device 1, such as a plug-in mobile hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (SecureDigital, SD) card, a flash card (Flash Card), etc. equipped on the electronic device 1. Further, the memory 11 also includes an internal storage unit of the electronic device 1 and an external storage device. The memory 11 can not only be used to store application software and various types of data installed in the electronic device 1, such as the code of the wireless wire feeding method program suitable for laser welding, but also can be used to temporarily store data that has been output or is to be output.

[0163] The processor 10 may be composed of an integrated circuit in some embodiments, for example, a single packaged integrated circuit, or a plurality of packaged integrated circuits with the same or different functions, including one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and combinations of various control chips, etc. The processor 10 is the control core (Control Unit) of the electronic device, and uses various interfaces and lines to connect various components of the entire electronic device, and executes or executes programs or modules (such as wireless wire feeding method programs for laser welding, etc.) stored in the memory 11, and calls data stored in the memory 11 to execute various functions of the electronic device 1 and process data.

[0164] The bus 12 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus 12 may be divided into an address bus, a data bus, a control bus, etc. The bus 12 is configured to realize connection and communication between the memory 11 and at least one processor 10, etc.

[0165] Figure 3 Only an electronic device with components is shown, and those skilled in the art will understand that Figure 3The structure shown does not constitute a limitation on the electronic device 1, and may include fewer or more components than shown in the figure, or combine certain components, or arrange the components differently.

[0166] For example, although not shown, the electronic device 1 may also include a power source (such as a battery) for supplying power to various components. Preferably, the power source may be logically connected to the at least one processor 10 through a power management system, so that the power management system can realize functions such as charging management, discharging management, and power consumption management. The power source may also include any components such as one or more DC or AC power sources, recharging systems, power failure detection circuits, power converters or inverters, and power status indicators. The electronic device 1 may also include a variety of sensors, Bluetooth modules, Wi-Fi modules, etc., which will not be repeated here.

[0167] Furthermore, the electronic device 1 may also include a network interface. Optionally, the network interface may include a wired interface and / or a wireless interface (such as a WI-FI interface, a Bluetooth interface, etc.), which is generally used to establish a communication connection between the electronic device 1 and other electronic devices.

[0168] Optionally, the electronic device 1 may further include a user interface, which may be a display, an input unit (such as a keyboard), or a standard wired interface or a wireless interface. Optionally, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, and an OLED (Organic Light-Emitting Diode) touch device. The display may also be appropriately referred to as a display screen or a display unit, which is used to display information processed in the electronic device 1 and to display a visual user interface.

[0169] The wireless wire feeding method program for laser welding stored in the memory 11 of the electronic device 1 is a combination of multiple instructions. When running in the processor 10, it can achieve:

[0170] Receive a laser welding instruction, and construct a wireless wire feeding unit based on the laser welding instruction, wherein the wireless wire feeding unit includes a plurality of wireless wire feeding devices, and the wireless wire feeding devices include: a driving board power supply, a wire feeding motor and a wireless device, and adjacent wireless wire feeding devices among the plurality of wireless wire feeding devices are connected via a synchronization line;

[0171] Identify a welding point in a pre-built laser welding host, and use a wireless wire feeding unit to deliver a pre-acquired welding wire to the welding point;

[0172] If it is confirmed that the welding wire reaches the welding point, the welding wire is welded by using a laser welding host, and welding parameters in the welding process are obtained, and welding wire parameters in the wireless wire feeding unit are counted, wherein the welding parameters include: laser power, welding temperature and ambient temperature, and the welding wire parameters include: welding wire diameter, welding wire specific heat capacity and welding wire density;

[0173] Predicting the welding speed based on the welding parameters and the welding wire parameters to obtain the predicted welding speed;

[0174] According to the predicted welding speed, the wire feeding speed is compared to obtain the speed difference value;

[0175] When the speed difference value is greater than a preset standard speed difference value, the speed of the wireless wire feeding unit is adjusted based on the predicted welding speed to obtain an adjusted wire feeding unit;

[0176] When the speed difference value is not greater than the standard speed difference value, the wireless wire feeding unit is recorded as an adjustable wire feeding unit;

[0177] Based on the adjustment of the wire feeding unit, wireless wire feeding suitable for laser welding is completed.

[0178] Specifically, the specific implementation method of the processor 10 for the above instructions can refer to Figures 1 to 3 The description of the relevant steps in the corresponding embodiments will not be repeated here.

[0179] Furthermore, if the module / unit integrated in the electronic device 1 is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. The computer-readable storage medium can be volatile or non-volatile. For example, the computer-readable medium can include: any entity or system that can carry the computer program code, a recording medium, a USB flash drive, a mobile hard disk, a magnetic disk, an optical disk, a computer memory, and a read-only memory (ROM).

[0180] The present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor of an electronic device, the computer program can implement:

[0181] Receive a laser welding instruction, and construct a wireless wire feeding unit based on the laser welding instruction, wherein the wireless wire feeding unit includes a plurality of wireless wire feeding devices, and the wireless wire feeding devices include: a driving board power supply, a wire feeding motor and a wireless device, and adjacent wireless wire feeding devices among the plurality of wireless wire feeding devices are connected via a synchronization line;

[0182] Identify a welding point in a pre-built laser welding host, and use a wireless wire feeding unit to deliver a pre-acquired welding wire to the welding point;

[0183] If it is confirmed that the welding wire reaches the welding point, the welding wire is welded by using a laser welding host, and welding parameters in the welding process are obtained, and welding wire parameters in the wireless wire feeding unit are counted, wherein the welding parameters include: laser power, welding temperature and ambient temperature, and the welding wire parameters include: welding wire diameter, welding wire specific heat capacity and welding wire density;

[0184] Predicting the welding speed based on the welding parameters and the welding wire parameters to obtain the predicted welding speed;

[0185] According to the predicted welding speed, the wire feeding speed is compared to obtain the speed difference value;

[0186] When the speed difference value is greater than a preset standard speed difference value, the speed of the wireless wire feeding unit is adjusted based on the predicted welding speed to obtain an adjusted wire feeding unit;

[0187] When the speed difference value is not greater than the standard speed difference value, the wireless wire feeding unit is recorded as an adjustable wire feeding unit;

[0188] Based on the adjustment of the wire feeding unit, wireless wire feeding suitable for laser welding is completed.

[0189] In the several embodiments provided by the present invention, it should be understood that the disclosed devices, systems and methods can be implemented in other ways. For example, the system embodiments described above are only illustrative, and actual implementation may have other division methods.

[0190] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0191] In addition, each functional module in each embodiment of the present invention may be integrated into one processing unit, each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional modules.

[0192] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0193] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A wireless wire feeding method suitable for laser welding, characterized in that: The method comprises: Receive a laser welding instruction, and construct a wireless wire feeding unit based on the laser welding instruction, wherein the wireless wire feeding unit includes a plurality of wireless wire feeding devices, and the wireless wire feeding devices include: a driving board power supply, a wire feeding motor and a wireless device, and adjacent wireless wire feeding devices among the plurality of wireless wire feeding devices are connected via a synchronization line; Identify a welding point in a pre-built laser welding host, and use a wireless wire feeding unit to deliver a pre-acquired welding wire to the welding point; If it is confirmed that the welding wire reaches the welding point, the welding wire is welded by using a laser welding host, and welding parameters in the welding process are obtained, and welding wire parameters in the wireless wire feeding unit are counted, wherein the welding parameters include: laser power, welding temperature and ambient temperature, and the welding wire parameters include: welding wire diameter, welding wire specific heat capacity and welding wire density; Predicting the welding speed based on the welding parameters and the welding wire parameters to obtain the predicted welding speed; The method of predicting the welding speed based on the welding parameters and the welding wire parameters to obtain the predicted welding speed includes: The predicted welding speed is calculated using the following formula: ； in, represents the predicted welding speed, Indicates the preset welding efficiency, Indicates welding power, Indicates the density of welding wire, Indicates the wire diameter, Indicates the specific heat capacity of welding wire, Indicates the welding temperature, Indicates the ambient temperature; According to the predicted welding speed, the wire feeding speed is compared to obtain the speed difference value; The method of comparing the wire feeding speeds according to the predicted welding speed to obtain the speed difference value includes: Detecting an original welding period during the welding process of the welding wire; The original welding time period is divided to obtain a divided welding time period set, the divided welding time periods are sequentially extracted from the divided welding time period set, and the unit welding wire length completed by the wireless wire feeding unit in the divided welding time period is obtained; Based on the separated welding time periods and the unit welding wire length, a separated wire feeding speed is calculated, and the separated wire feeding speeds are summarized to obtain a separated wire feeding speed set; According to the separated wire feeding speed set and the predicted welding speed, a speed difference value is calculated, wherein the speed difference value is expressed as: ； in, Indicates the speed difference value, Indicates the number of wire feed speeds in the separation wire feed speed concentration. Indicates the separation wire feed speed concentration Separate wire feeding speed; When the speed difference value is greater than a preset standard speed difference value, the speed of the wireless wire feeding unit is adjusted based on the predicted welding speed to obtain an adjusted wire feeding unit; When the speed difference value is not greater than the standard speed difference value, the wireless wire feeding unit is recorded as an adjustable wire feeding unit; Based on the adjustment of the wire feeding unit, wireless wire feeding suitable for laser welding is completed.

2. The wireless wire feeding method suitable for laser welding according to claim 1, characterized in that: The wireless wire feeding unit is constructed, comprising: Identifying a wire feeding distance between the welding point and a preset wire feeder, and determining the number of wire feeding devices based on the wire feeding distance; Acquire multiple wireless wire feeding devices according to the number of wire feeding devices, wherein the number of wireless wire feeding devices in the multiple wireless wire feeding devices is the same as the number of wire feeding devices, and in the wireless wire feeding devices, the wireless devices and the wire feeding motors are both connected to the driving board power supply; Using the synchronization line to connect multiple wireless devices in the multiple wireless wire feeding devices to obtain a wireless wire feeding device cluster, wherein the synchronization line is a two-core wire; The construction of a wireless wire feeding unit is completed based on the wireless wire feeding device cluster.

3. The wireless wire feeding method suitable for laser welding according to claim 2, characterized in that: The method of using a wireless wire feeding unit to deliver the pre-acquired welding wire to the welding point comprises: Starting the wireless wire feeding unit; Determine an initial wire feeding speed according to the wire feeding distance, generate an initial speed control instruction based on the initial wire feeding speed, and send the initial speed control instruction to the started wireless wire feeding unit; When the wireless wire feeding unit receives the initial speed control instruction after being started, the motor speed of the wireless wire feeding unit is synchronized to obtain a synchronous wire feeding unit; The welding wire is fed to the welding point by a synchronous wire feeding unit.

4. The wireless wire feeding method suitable for laser welding according to claim 3, characterized in that: The step of starting the wireless wire feeding unit comprises: Sending preset device startup instructions to multiple wireless devices in the wireless wire feeding unit respectively, and identifying a first wireless device that first responds to the device startup instruction among the multiple wireless devices; Determine in the wireless wire feeding unit a first wire feeding device corresponding to the first wireless device, and start a first driving board power supply of the first wire feeding device; Identify the unresponsive device set of the wireless wire feeder unit; Based on the first wire feeding device and the synchronization line, the device startup instruction is transmitted to each unresponsive device in the unresponsive device set respectively; If it is confirmed that the unresponsive device in the unresponsive device set has received the device startup instruction, the unresponsive power supply corresponding to the unresponsive device is started. When the unresponsive power supplies corresponding to all the unresponsive devices in the unresponsive device set and the first drive board power supply are started, the startup of the wireless wire feeding unit is completed.

5. The wireless wire feeding method suitable for laser welding according to claim 4, characterized in that: The method of synchronizing the motor speed of the wireless wire feeding unit to obtain a synchronous wire feeding unit includes: Sequentially extracting wireless wire feeding devices from the wireless wire feeding unit, and detecting the actual motor speed of the wire feeding motor in the wireless wire feeding device; Obtaining a transmission radius of the wireless wire feeding device; The initial motor speed is calculated according to the transmission radius and the initial wire feeding speed, wherein the initial motor speed is expressed as: ； in, Indicates the initial motor speed, Indicates the initial wire feeding speed, represents pi, Represents the transmission radius, Indicates the preset friction factor; Summarizing the actual motor speed and the initial motor speed respectively to obtain an actual motor speed set and an initial motor speed set; Calculating the synchronous motor speed based on the actual motor speed set and the initial motor speed set; The rotation speeds of the multiple wireless wire feeding devices in the synchronous wire feeding unit are synchronized according to the rotation speed of the synchronous motor to obtain a synchronous wire feeding unit.

6. The wireless wire feeding method suitable for laser welding according to claim 5, characterized in that: The step of calculating the synchronous motor speed based on the actual motor speed set and the initial motor speed set includes: Extracting the actual motor speed and the initial motor speed from the actual motor speed set and the initial motor speed set respectively; Calculating a speed vector difference between the actual motor speed and the initial motor speed, wherein the speed vector difference is calculated by subtracting the initial motor speed from the actual motor speed; Summarizing the speed vector differences to obtain a speed vector difference set; The average vector difference of the speed vector difference set and the average motor speed of the initial motor speed set are calculated respectively, and the synchronous motor speed is calculated based on the average vector difference and the average motor speed, wherein the synchronous motor speed is the sum of the average vector difference and the average motor speed.

7. The wireless wire feeding method suitable for laser welding according to claim 6, characterized in that: The obtaining of welding parameters during the welding process includes: Using a pre-built laser power sensor to measure the laser power of the laser welding host, and using a pre-built temperature sensor to measure the ambient temperature and the welding temperature of the welding port; Counting the welding wire set to be welded in the wireless wire feeding unit, and obtaining the welding wire parameter set to be welded of the welding wire set to be welded, wherein the welding wire set to be welded includes one or more welding wires to be welded, the welding wire parameters to be welded correspond to the welding wires to be welded one by one, and the welding wire parameters to be welded include: the diameter of the welding wire to be welded, the specific heat capacity of the welding wire to be welded, and the density of the welding wire to be welded; Based on the welding wire parameter set to be welded, the average welding wire diameter, the average welding wire specific heat capacity and the average welding wire density are calculated, and the average welding wire diameter, the average welding wire specific heat capacity and the average welding wire density are recorded as welding wire diameter, welding wire specific heat capacity and welding wire density respectively.

8. A wireless wire feeding system suitable for laser welding, characterized in that: The system comprises: A wire feeding unit construction module, used for receiving a laser welding instruction, and constructing a wireless wire feeding unit based on the laser welding instruction, wherein the wireless wire feeding unit includes a plurality of wireless wire feeding devices, and the wireless wire feeding devices include: a driving board power supply, a wire feeding motor and a wireless device, and adjacent wireless wire feeding devices among the plurality of wireless wire feeding devices are connected via a synchronization line; A welding parameter acquisition module is used to confirm a welding point in a pre-built laser welding host, and use a wireless wire feeding unit to deliver a pre-acquired welding wire to the welding point. If it is confirmed that the welding wire has reached the welding point, the laser welding host is used to weld the welding wire, and the welding parameters in the welding process are obtained, and the welding wire parameters in the wireless wire feeding unit are counted, wherein the welding parameters include: laser power, welding temperature and ambient temperature, and the welding wire parameters include: welding wire diameter, welding wire specific heat capacity and welding wire density; A speed difference calculation module is used to predict the welding speed based on the welding parameters and the welding wire parameters to obtain the predicted welding speed, and to compare the wire feeding speed according to the predicted welding speed to obtain the speed difference value; A wire feeding speed adjustment module, for adjusting the speed of the wireless wire feeding unit based on the predicted welding speed to obtain an adjusted wire feeding unit when the speed difference value is greater than a preset standard speed difference value, and for recording the wireless wire feeding unit as an adjusted wire feeding unit when the speed difference value is not greater than the standard speed difference value; The method of predicting the welding speed based on the welding parameters and the welding wire parameters to obtain the predicted welding speed includes: The predicted welding speed is calculated using the following formula: ； in, represents the predicted welding speed, Indicates the preset welding efficiency, Indicates welding power, Indicates the density of welding wire, Indicates the wire diameter, represents the specific heat capacity of welding wire, Indicates the welding temperature, Indicates the ambient temperature; The method of comparing the wire feeding speeds according to the predicted welding speed to obtain the speed difference value includes: Detecting an original welding period during the welding process of the welding wire; The original welding time period is divided to obtain a divided welding time period set, the divided welding time periods are sequentially extracted from the divided welding time period set, and the unit welding wire length completed by the wireless wire feeding unit in the divided welding time period is obtained; Based on the separated welding time periods and the unit welding wire length, a separated wire feeding speed is calculated, and the separated wire feeding speeds are summarized to obtain a separated wire feeding speed set; According to the separated wire feeding speed set and the predicted welding speed, a speed difference value is calculated, wherein the speed difference value is expressed as: ； in, Indicates the speed difference value, Indicates the number of wire feed speeds in the separation wire feed speed concentration. Indicates the separation wire feed speed concentration Separate wire feed speeds.

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