CN112099106A - Method and device for detecting welding - Google Patents
Method and device for detecting welding Download PDFInfo
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- CN112099106A CN112099106A CN202010739428.3A CN202010739428A CN112099106A CN 112099106 A CN112099106 A CN 112099106A CN 202010739428 A CN202010739428 A CN 202010739428A CN 112099106 A CN112099106 A CN 112099106A
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
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Abstract
The present disclosure relates to a method and apparatus for detecting welding, the method comprising: receiving welding signals and parameter change signals sent by a spot welder, sending the welding signals when the spot welder performs welding, sending the parameter change signals when the spot welder switches welding parameters, determining a first number of the received welding signals after the spot welder completes a current welding task, and a second number of the received parameter change signals, if the first number is different from a target number of welding spots contained in a preset target welding mode, sending first prompt information, wherein the first prompt information is used for indicating that the spot welder generates missing welding or multi-welding, and if the second number is not matched with a welding parameter group contained in the target welding mode, sending second prompt information, and the second prompt information is used for indicating that the spot welder generates wrong welding. This openly can be when whether take place to leak welding or weld more at the check point welding machine, whether take place the wrong welding at the check point welding machine, improved welded detection efficiency.
Description
Technical Field
The disclosure relates to the field of welding, in particular to a welding detection method and device.
Background
The correct welding of the objects to be welded is a critical step in the industrial process, and therefore the accuracy of the welding of the objects to be welded is of paramount importance. In the actual welding process, wrong welding and missing welding often occur, and particularly in the manual welding process, if welding is not performed according to specified welding parameters (such as current, pressure, time and the like), wrong welding occurs, which easily causes the problems that the welding strength of a welding spot is not up to standard or the welding spot is penetrated. If welding is not performed at a predetermined position, that is, missing welding occurs, it is likely that the subsequent processing step cannot be continuously performed. Therefore, after the welding task is completed, it is necessary to detect whether or not the wrong welding and the missing welding have occurred during the welding process. Under the general condition, whether welding missing occurs is detected by judging whether the number of welding spots is consistent with the number of specified welding spots when the welding task is completed, and then whether welding missing occurs in the welding process is detected in sequence, so that the welding detection efficiency is low.
Disclosure of Invention
The purpose of the present disclosure is to provide a welding detection method and device, which are used for solving the problem of low welding detection efficiency in the prior art.
In order to achieve the above object, according to a first aspect of embodiments of the present disclosure, there is provided a detection method of welding, the method including:
receiving a welding signal and a parameter change signal sent by a spot welding machine, wherein the welding signal is sent when the spot welding machine performs welding, and the parameter change signal is sent when the spot welding machine switches welding parameters;
determining a first number of the received welding signals and a second number of the received parameter change signals after determining that the spot welder completes a current welding task;
if the first number is different from the target number of the welding spots contained in the preset target welding mode, sending first prompt information, wherein the first prompt information is used for indicating that the spot welding machine generates welding missing or welding exceeding;
and if the second quantity is not matched with the welding parameter group contained in the target welding mode, sending second prompt information, wherein the second prompt information is used for indicating that the spot welding machine has wrong welding.
Optionally, the welding parameter group includes a welding parameter of each welding point;
if the second quantity does not match the welding parameter set contained in the target welding mode, sending a second prompt message, including:
determining the number of changes of the welding parameters in the welding parameter group;
and if the second quantity is not the same as the change times, determining that the second quantity is not matched with the welding parameter group, and sending out second prompt information.
Optionally, the method further comprises:
receiving a parameter signal corresponding to the welding signal sent by the spot welding machine, wherein the parameter signal is sent out when the spot welding machine performs welding and is used for indicating the spot welding machine to perform welding;
determining a target welding point corresponding to the welding signal according to the receiving sequence of the welding signal, and determining a target welding parameter corresponding to the target welding point in the welding parameter group;
and if the parameter signal corresponding to the welding signal is not matched with the target welding parameter, sending third prompt information, wherein the third prompt information is used for indicating that the target welding spot is welded incorrectly.
Optionally, the method further comprises:
acquiring indication information of an object to be welded, wherein the indication information comprises: parameters of the object to be welded, and/or an image of the object to be welded;
and determining the target welding mode according to the indication information.
Optionally, after the determining the target welding mode according to the indication information, the method further includes:
and sending the target welding mode to the spot welder so that the spot welder performs welding according to the target welding mode.
According to a second aspect of embodiments of the present disclosure, there is provided a detection apparatus of welding, the apparatus comprising:
the transmission unit is used for receiving a welding signal and a parameter change signal sent by a spot welding machine, wherein the welding signal is sent when the spot welding machine performs welding, and the parameter change signal is sent when the spot welding machine switches welding parameters;
the processing unit is used for determining a first number of the received welding signals and a second number of the received parameter change signals after the spot welding machine is determined to complete the current welding task;
the prompting unit is used for sending first prompting information if the first quantity is different from the target quantity of the welding spots contained in a preset target welding mode, and the first prompting information is used for indicating that the spot welding machine generates welding missing or welding exceeding;
and the prompting unit is further used for sending second prompting information if the second quantity is not matched with the welding parameter group contained in the target welding mode, wherein the second prompting information is used for indicating that the spot welding machine has wrong welding.
Optionally, the welding parameter group includes a welding parameter of each welding point;
the processing unit is further to: determining the number of changes of the welding parameters in the welding parameter group;
and the prompting unit is used for determining that the second quantity is not matched with the welding parameter group and sending out second prompting information if the second quantity is not the same as the change times.
Optionally, the transmission unit is further configured to:
receiving a parameter signal corresponding to the welding signal sent by the spot welding machine, wherein the parameter signal is sent out when the spot welding machine performs welding and is used for indicating the spot welding machine to perform welding;
the processing unit is further configured to determine a target welding point corresponding to the welding signal according to the receiving sequence of the welding signal, and determine a target welding parameter corresponding to the target welding point in the welding parameter set;
the prompt unit is further configured to send third prompt information if the parameter signal corresponding to the welding signal is not matched with the target welding parameter, where the third prompt information is used to indicate that the target welding spot is welded incorrectly.
Optionally, the apparatus further comprises:
an input unit for acquiring indication information of an object to be welded, the indication information including: parameters of the object to be welded, and/or an image of the object to be welded;
the processing unit is further configured to determine the target welding mode according to the indication information.
Optionally, the transmission unit is further configured to:
after the target welding mode is determined according to the indication information, the target welding mode is sent to the spot welding machine, so that the spot welding machine performs welding according to the target welding mode.
According to the technical scheme, the welding signal and the parameter change signal sent by the spot welding machine are received firstly in the disclosure, wherein the welding signal is sent when the spot welding machine performs welding, the parameter change signal is sent when the spot welding machine switches welding parameters, then after the spot welding machine is determined to complete the current welding task, the first number of the received welding signal and the second number of the received parameter change signal are determined, then the first number and the second number are judged, if the first number is different from the target number of welding spots contained in the preset target welding mode, first prompt information used for indicating that the spot welding machine generates missing welding or excessive welding mismatching is sent, and if the second number is different from the welding parameter group contained in the target welding mode, second prompt information used for indicating that the spot welding machine generates wrong welding is sent. The method and the device can be used for detecting whether the spot welding machine is welded in a missing mode or in a multi-welding mode, and meanwhile, whether the spot welding machine is welded in a wrong mode or not is expanded, and the welding detection efficiency is improved.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a schematic diagram illustrating a detection scenario in accordance with an exemplary embodiment;
FIG. 2 is a flow chart illustrating a method of detection of a weld in accordance with an exemplary embodiment;
FIG. 3 is a flow chart illustrating another method of detecting a weld in accordance with an exemplary embodiment;
FIG. 4 is a flow chart illustrating another method of detecting a weld in accordance with an exemplary embodiment;
FIG. 5 is a flow chart illustrating another method of detecting a weld in accordance with an exemplary embodiment;
FIG. 6 is a flow chart illustrating another method of detecting a weld in accordance with an exemplary embodiment;
FIG. 7 is a block diagram illustrating a detection device for welding in accordance with an exemplary embodiment;
FIG. 8 is a block diagram illustrating another welded detection device in accordance with an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of methods and apparatus consistent with certain aspects of the present disclosure, as detailed in the appended claims.
Before describing the detection method and apparatus for welding provided by the present disclosure, an application scenario related to various embodiments of the present disclosure is first described. The application scenario may include a spot welder 300 and a welded detection device 200, and the detection device 200 may include: the transmission unit 201, the processing unit 202 and the prompting unit 203, and a schematic diagram of a detection scene may be as shown in fig. 1. Data transmission can be performed between the spot welder 300 and the processing unit 202 through the transmission unit 201, wherein the transmission unit 201 may be a remote I/O module, or may be a WLAN (Wireless Local Area Network, chinese), a bluetooth module, a ZigBee (chinese: ZigBee protocol), or the like. The processing unit 202 may be a PLC (Programmable Logic Controller, Chinese), a DCS (Distributed control System, Chinese), an FCS (FieldBus control System, Chinese), or the like. The spot welder 300 may include, but is not limited to, an ac spot welder, a medium frequency spot welder, or an energy storage spot welder, among other types of spot welders.
FIG. 2 is a flow chart illustrating a method of detecting a weld, as shown in FIG. 2, according to an exemplary embodiment, the method comprising:
and 101, receiving a welding signal and a parameter change signal sent by a spot welding machine, wherein the welding signal is sent when the spot welding machine performs welding, and the parameter change signal is sent when the spot welding machine switches welding parameters.
For example, in order to improve the detection efficiency of welding, the spot welder may transmit a welding signal and a parameter variation signal to the processing unit through the transmission unit and then receive the welding signal and the parameter variation signal by the processing unit when welding is performed. The welding signal may be a signal (e.g., a high level signal) generated and emitted by the spot welder when a welding tongs on the spot welder performs welding according to welding parameters corresponding to a welding mode of the spot welder. The parameter change signal may be a signal (e.g., a low level signal) that is generated when the welding parameters are switched when the welding mode of the spot welding machine is changed. If the welding mode of the spot welding machine is not changed, the spot welding machine can generate a welding signal and send the welding signal to the processing unit when the welding tongs perform welding. If the welding mode of the spot welding machine changes, the spot welding machine can firstly switch welding parameters according to the changed welding mode and generate parameter change signals, then when a welding tongs executes welding according to the switched welding parameters, welding signals are generated, and then the welding signals and the parameter change signals are simultaneously sent to the processing unit, so that the processing unit receives the welding signals and the parameter change signals. Wherein each welding mode corresponds to one or more welding parameters. The welding parameters may include welding pressure, for example, different welding pressures may be applied to the to-be-welded objects with different thicknesses, different materials, and different numbers of layers by using a cylinder disposed inside the welding tongs, so as to weld the different to-be-welded objects, and the welding parameters may further include welding current, welding time, and the like, which is not limited in the present disclosure. The welding tongs can be provided with a fault indicator lamp, and when the welding parameters of the welding tongs during welding are inconsistent with the welding parameters corresponding to the welding mode of the spot welding machine (for example, the absolute value of the difference between the welding current during welding and the welding current corresponding to the welding mode is greater than or equal to a preset threshold), the fault indicator lamp flickers to prompt a technician to stop welding.
When manual welding is performed, a technician may first determine the type of the object to be welded, for example, when the object to be welded is a vehicle, the type of the object to be welded may be the model of the vehicle, and the type of the vehicle (e.g., car, truck), configuration (e.g., two or three compartments, with or without a skylight), and the like can be determined according to the model of the vehicle. After determining the type of the objects to be welded, a technician can determine the welding mode of each welding point according to the type of the objects to be welded, and can select the welding mode of the spot welding machine through one or more switches arranged on a welding tongs when welding each welding point so as to enable the welding parameters of each welding point to be welded to meet the standard of industrial production, wherein the welding point can be understood as the welding position of the objects to be welded, a plurality of welding points are usually required to be welded on each object to be welded, and each welding point required to be welded is fixed. For example, the welding tongs can be provided with two switches of a switch A and a switch B, so that 4 welding modes can be respectively switched through the switch A and the switch B, namely, the spot welder can be switched to a welding mode 1 when the switch A is pressed alone, the spot welder can be switched to a welding mode 2 when the switch B is pressed alone, the spot welder can be switched to a welding mode 3 when the switch A and the switch B are pressed simultaneously, and the spot welder can be switched to the welding mode 4 when the switch A and the switch B are kept bouncing up. If the technician does not have a switch during welding, which indicates that the welding mode of the spot welding machine is not changed, the spot welding machine may generate a welding signal and send the welding signal to the processing unit when the welding tongs perform welding, so that the processing unit receives the welding signal. If a technician switches the switch during welding to indicate that the welding mode of the spot welding machine is changed, the spot welding machine can switch welding parameters according to the changed welding mode and generate a parameter change signal, then a welding clamp generates a welding signal when executing welding according to the switched welding parameters, and then simultaneously sends the welding signal and the parameter change signal to the processing unit so that the processing unit receives the welding signal and the parameter change signal.
And 103, if the first quantity is different from the target quantity of the welding spots contained in the preset target welding mode, sending first prompt information, wherein the first prompt information is used for indicating that the spot welding machine generates welding missing or welding exceeding.
And 104, if the second quantity is not matched with the welding parameter group contained in the target welding mode, sending second prompt information, wherein the second prompt information is used for indicating that the spot welding machine has wrong welding.
For example, after the processing unit receives the welding signals and/or the parameter variation signals, the number of the welding signals and/or the parameter variation signals may be counted by a counter disposed in the processing unit, and the number of the welding signals and the number of the parameter variation signals may be the same or different. For example, a first counter and a second counter may be respectively disposed in the processing unit, the first counter is used for counting the number of the welding signals, and the second counter is used for counting the number of the parameter change signals. After welding of the object to be welded is completed, the spot welder can send a confirmation signal for determining completion of the current welding task to the processing unit via the transmission unit. For example, when manual welding is performed, the spot welding machine may be controlled to send a confirmation signal to the processing unit by pressing a preset confirmation button, which may be provided on the welding tongs for the technician to operate. After receiving the confirmation signal, the processing unit can determine that the spot welding machine completes the current welding task. At this time, the processing unit may determine the number counted by the first counter at the current time as the first number of the received welding signals, determine the number counted by the second counter at the current time as the second number of the received parameter variation signals, and then respectively determine the first number and the second number according to a preset target welding mode. The preset target welding mode may include a target number of welding spots and a welding parameter set, the welding parameter set may include a welding parameter of each welding spot of the objects to be welded, the target welding mode may be stored in the processing unit in advance, the target welding mode corresponds to the type of the objects to be welded one to one, that is, the target welding mode may be determined after the type of the objects to be welded is determined, that is, the target welding mode is the same as the welding mode on the spot welding machine.
If the first number is different from the target number of the welding spots included in the target welding mode, which indicates that welding missing or welding excessive occurs in the welding process, a first prompt message for indicating that the spot welding machine has welding missing or welding excessive may be sent by the prompt unit to prompt a technician to perform welding missing or welding excessive inspection on the object to be welded, and the first prompt message may be, for example, a message of "welding excessive or welding excessive" displayed on a display screen of the prompt unit while an alarm (e.g., a buzzer or the like) of the prompt unit gives an alarm. The display screen of the prompting unit can be a liquid crystal display screen, an LED (Light Emitting Diode) display screen, etc. If the technician finds that the spot welding machine generates welding missing, welding parameters corresponding to the welding spots of the welding missing in the target welding mode can be selected to perform repair welding on the object to be welded, and if the technician finds that the spot welding machine generates multiple welding, the welding qualification of the object to be welded can be confirmed. If the first number is the same as the target number of the welding points included in the target welding mode, which indicates that no missing welding or excessive welding occurs in the welding process, the first prompt message may not be sent. If the second quantity is not matched with the welding parameter group contained in the target welding mode, which indicates that the wrong welding occurs in the welding process, second prompt information for indicating that the wrong welding occurs in the spot welding machine can be sent through the prompt unit to prompt a technician to carry out wrong welding inspection on the object to be welded, and the second prompt information can be displayed through a display screen of the prompt unit while alarming through an alarm of the prompt unit. The second number not matching the set of welding parameters contained in the target welding pattern may be understood as the second number not being the same as the number of changes in the welding parameters corresponding to the target number of welds arranged in the sequence in the target welding pattern. If the second quantity matches the welding parameter set included in the target welding mode, which indicates that no mis-welding occurs in the welding process, the second prompt message may not be sent.
In another implementation manner, the spot welding machine may send the welding parameters and the welding signals for performing welding by the spot welding machine to the processing unit at the same time when performing welding, so that the processing unit may determine whether the welding parameters of the welding spots are correct according to the sequence of receiving the welding signals. For example, the target welding point in the target welding mode can be determined according to the sequence of the received welding signals, and if the welding parameter is inconsistent with the target welding parameter corresponding to the target welding point, indicating that the spot welding machine performs wrong welding, a third prompt message for indicating that the target welding point performs wrong welding can be sent through the prompt unit. For example, the target welding point where the wrong welding occurs is the 4 th welding point when welding is performed according to the welding sequence of all welding points in the target welding mode, and the third prompt message may be that "4 wrong welding" is displayed through the display screen of the prompt unit while the alarm of the prompt unit is used for giving an alarm. If the welding parameters are consistent with the target welding parameters corresponding to the target welding points, the fact that wrong welding does not occur during welding of the spot welding machine is indicated, and then the received welding parameters can be continuously judged. Furthermore, a reset button can be arranged on a welding clamp of the spot welding machine, the spot welding machine can send a reset signal for indicating the processing unit to count the number of the welding signals and the parameter change signals again to the processing unit through the reset button, and the processing unit can continue to detect the next object to be welded after receiving the reset signal.
In summary, in the disclosure, a welding signal and a parameter change signal sent by a spot welder are first received, where the welding signal is sent when the spot welder performs welding, and the parameter change signal is sent when the spot welder switches welding parameters, then after it is determined that the spot welder completes a current welding task, a first number of the received welding signals and a second number of the received parameter change signals are determined, and then the first number and the second number are determined, if the first number is different from a target number of welding spots included in a preset target welding mode, a first prompt message for indicating that the spot welder has missed welding or excessive welding is sent, and if the second number is not matched with a set of welding parameters included in the target welding mode, a second prompt message for indicating that the spot welder has failed welding is sent. The method and the device can be used for detecting whether the spot welding machine is welded in a missing mode or in a multi-welding mode, and meanwhile, whether the spot welding machine is welded in a wrong mode or not is expanded, and the welding detection efficiency is improved.
FIG. 3 is a flow chart illustrating another method of detecting a weld according to an exemplary embodiment, where the set of welding parameters includes a welding parameter for each weld spot, as shown in FIG. 3.
Step 104 comprises:
In step 1042, if the second quantity is different from the change times, it is determined that the second quantity is not matched with the welding parameter set, and a second prompt message is sent.
For example, the set of welding parameters of the target welding mode may comprise the welding parameters of each weld spot of the object to be welded. When determining whether the second number matches the welding parameter group included in the target welding mode, the number of changes of the welding parameters in the welding parameter group may be determined according to the welding sequence of the welding spots, and then the second number and the number of changes may be determined. If the second number is different from the change times, which indicates that the welding parameters switched when the spot welding machine performs welding are wrong, it can be determined that the second number is not matched with the welding parameter group, and a second prompt message is sent. The second prompt message may be, for example, a buzzer of the prompt unit to give an alarm, and a display screen of the prompt unit displays "wrong welding". If the second number is the same as the change times, which indicates that the welding parameters switched when the spot welding machine performs welding are correct, it may be determined that the second number matches the welding parameter set, and the second prompt may not be issued at this time. For example, the target number of welding spots included in the target welding pattern is 5, and the corresponding welding parameters include: (200A, 150kgf), (400A, 200kgf), (200A, 150kgf), (400A, 200kgf), then the number of changes in the welding parameter may be determined to be 3 times. Wherein, (200A, 150kgf) indicates that the welding current is 200A, the welding pressure is 150kgf, and so on for other welding parameters.
FIG. 4 is a flow chart illustrating another method of detecting a weld, as shown in FIG. 4, further comprising:
and 105, receiving a parameter signal corresponding to the welding signal sent by the spot welding machine, wherein the parameter signal is sent when the spot welding machine performs welding and is used for indicating the spot welding machine to perform welding parameters.
And 106, determining target welding points corresponding to the welding signals according to the receiving sequence of the welding signals, and determining target welding parameters corresponding to the target welding points in the welding parameter group.
And 107, if the parameter signal corresponding to the welding signal is not matched with the target welding parameter, sending third prompt information, wherein the third prompt information is used for indicating that the target welding point is welded wrongly.
For example, the spot welder may transmit, through the transmission unit, the welding signal and a parameter signal indicating a welding parameter at which the spot welder performs welding to the processing unit when performing welding, so that the processing unit receives the welding signal and the parameter signal corresponding to the welding signal. After receiving the welding signal and the parameter signal, the processing unit may determine a target welding point corresponding to the welding signal according to a receiving sequence of the welding signal, determine a target welding parameter corresponding to the target welding point in the welding parameter set of the target welding mode, and then determine whether the target welding parameter is matched with the parameter signal corresponding to the welding signal. The target welding parameter is matched with the parameter signal corresponding to the welding signal, the target welding parameter may be the same as the welding parameter corresponding to the parameter signal, or the difference between the target welding parameter and the welding parameter corresponding to the parameter signal is smaller than a preset threshold. If the parameter signal corresponding to the welding signal is not matched with the target welding parameter, which indicates that the spot welding machine is in wrong welding, a third prompt message for indicating that the target welding spot is in wrong welding can be sent out through the prompt unit. For example, the target welding point where the wrong welding occurs is the 4 th welding point when welding is performed in the welding order of all welding points in the target welding mode, and the third prompt message may be, for example, a prompt through an alarm (buzzer or the like) of the prompt unit and display of "4 wrong welding" through a display screen of the prompt unit. If the parameter signal corresponding to the welding signal is matched with the target welding parameter, which indicates that the spot welding machine does not perform wrong welding, the parameter signal corresponding to the received welding signal can be continuously judged.
FIG. 5 is a flow chart illustrating another method of detecting a weld, as shown in FIG. 5, in accordance with an exemplary embodiment, the method further comprising:
And step 109, determining a target welding mode according to the indication information.
For example, the type of the object to be welded may be determined by acquiring indication information of the object to be welded, which may include parameters of the object to be welded, an image of the object to be welded, and the like. If the object to be welded is a vehicle, the parameters of the object to be welded may include the model of the vehicle. For example, the model number of the vehicle may be input through the input unit, or the model number of the vehicle may be determined according to an order plan in an MES (Manufacturing Execution System, chinese), where the order plan may include the model numbers and the order sequence of a plurality of vehicles, and if the 5 th vehicle in the order plan is processed in the order sequence on the production line, the model number of the 5 th vehicle in the order plan may be determined as the model number of the vehicle to be welded. When the object to be welded is a vehicle, the parameters of the object to be welded may also include the structure of the vehicle taken by a jig on the production line. The clamp may be provided with a plurality of pressure sensors, which may be of the ceramic, semiconductor, etc. type. After the clamp clamps the vehicle, the structure of the vehicle (such as a two-compartment structure, a skylight structure and the like) can be obtained according to the pressure detected by the plurality of pressure sensors. The image of the object to be welded can be obtained by scanning and the like, and if the object to be welded is a vehicle, the image of the object to be welded can be judged by an AI (English: Artificial Intelligence) module so as to determine the model, structure and the like of the vehicle. After the indication information of the object to be welded is obtained, the target welding mode can be determined according to the indication information. For example, the correspondence between the indication information and the target welding mode may be stored in a preset database, and the target welding mode may be determined according to the correspondence between the indication information and the target welding mode stored in the database in advance. In the process of actual welding, the types of the objects to be welded are various, the number of welding points corresponding to the objects to be welded and the welding parameters of different types are different, the types of the objects to be welded can be determined according to the indication information of the objects to be welded, the number of the welding points corresponding to the objects to be welded and the welding parameters of the objects to be welded in the target welding mode are determined, the problems that welding confusion caused by the number of the welding points of the objects to be welded which are difficult to determine during manual welding and welding parameters are not switched timely, welding parameter errors of the welding points are caused are solved, welding missing and welding errors can be reduced, and the accuracy of welding is improved.
FIG. 6 is a flow chart illustrating another method of detecting a weld, as shown in FIG. 6, after step 109, the method further comprising:
and step 110, sending the target welding mode to the spot welder so that the spot welder performs welding according to the target welding mode.
For example, after determining the target welding pattern, the processing unit may transmit the target welding pattern to the spot welder through the transmission unit, and receive the target welding pattern by the spot welder. After the spot welding machine receives the target welding mode, the spot welding machine can weld the object to be welded according to the welding parameters of each welding spot included in the welding parameter group in the target welding mode. Therefore, the spot welding machine can automatically switch welding parameters during welding, and the welding accuracy is improved. It should be noted that, in the whole welding process, the sequence of welding each welding spot is the same as the welding sequence of each welding spot in the target welding mode, that is, when the spot welding machine performs welding, the welding is required to be performed sequentially according to the sequence of each welding spot in the target welding mode.
In summary, in the disclosure, a welding signal and a parameter change signal sent by a spot welder are first received, where the welding signal is sent when the spot welder performs welding, and the parameter change signal is sent when the spot welder switches welding parameters, then after it is determined that the spot welder completes a current welding task, a first number of the received welding signals and a second number of the received parameter change signals are determined, and then the first number and the second number are determined, if the first number is different from a target number of welding spots included in a preset target welding mode, a first prompt message for indicating that the spot welder has missed welding or excessive welding is sent, and if the second number is not matched with a set of welding parameters included in the target welding mode, a second prompt message for indicating that the spot welder has failed welding is sent. The method and the device can be used for detecting whether the spot welding machine is welded in a missing mode or in a multi-welding mode, and meanwhile, whether the spot welding machine is welded in a wrong mode or not is expanded, and the welding detection efficiency is improved.
Fig. 7 is a block diagram illustrating a welding detection apparatus according to an exemplary embodiment, and as shown in fig. 7, the apparatus 200 includes:
the transmission unit 201 is configured to receive a welding signal and a parameter change signal sent by the spot welding machine, where the welding signal is sent when the spot welding machine performs welding, and the parameter change signal is sent when the spot welding machine switches welding parameters.
The processing unit 202 is configured to determine a first number of received welding signals and a second number of received parameter change signals after determining that the spot welder completes the current welding task.
And the prompting unit 203 is used for sending first prompting information if the first quantity is different from the target quantity of the welding spots contained in the preset target welding mode, wherein the first prompting information is used for indicating that the spot welding machine generates welding missing or welding exceeding.
The prompting unit 203 is further configured to send a second prompting message if the second quantity does not match the welding parameter set included in the target welding mode, where the second prompting message is used to indicate that the spot welding machine has failed to weld.
Optionally, the set of welding parameters includes a welding parameter for each weld point.
The processing unit 202 is further configured to: the number of changes to the welding parameter in the set of welding parameters is determined.
And the prompting unit 203 is configured to determine that the second quantity is not matched with the welding parameter group and send out second prompting information if the second quantity is not the same as the change times.
Optionally, the transmission unit 201 is further configured to:
and receiving a parameter signal corresponding to the welding signal sent by the spot welding machine, wherein the parameter signal is sent when the spot welding machine performs welding and is used for indicating the spot welding machine to perform welding parameters.
The processing unit 202 is further configured to determine a target welding point corresponding to the welding signal according to the receiving sequence of the welding signal, and determine a target welding parameter corresponding to the target welding point in the welding parameter set.
And the prompting unit 203 is further configured to send third prompting information if the parameter signal corresponding to the welding signal is not matched with the target welding parameter, where the third prompting information is used to indicate that the target welding point is welded incorrectly.
Fig. 8 is a block diagram illustrating another welding detection apparatus according to an exemplary embodiment, and as shown in fig. 8, the apparatus 200 further includes:
an input unit 204, configured to obtain indication information of an object to be welded, where the indication information includes: parameters of the object to be welded, and/or an image of the object to be welded.
The processing unit 202 is further configured to determine a target welding mode according to the indication information.
Optionally, the transmission unit 201 is further configured to:
and after determining the target welding mode according to the indication information, sending the target welding mode to the spot welding machine so that the spot welding machine performs welding according to the target welding mode.
With regard to the apparatus in the above-described embodiment, the specific manner in which each part performs the operation has been described in detail in the embodiment related to the method, and will not be described in detail here. The operating voltage of the spot welder and the operating voltage of the processing unit may be the same or different. When the working voltage of the spot welder is different from that of the processing unit, the spot welder and the processing unit can be isolated through the relay so as to ensure the normal work of the spot welder and the processing unit. The relay may be disposed inside the processing unit, or may be disposed inside the transmission unit or the spot welding machine, which is not limited in this disclosure. When the spot welder does not perform welding, the main contact of the relay is closed, the auxiliary contact is opened, and when the spot welder performs welding, the main contact of the relay is opened, the auxiliary contact is closed, so that when the main contact of the relay is opened and the auxiliary contact is closed, the processing unit can receive signals sent by the spot welder, the safety isolation between the processing unit and the spot welder is guaranteed, and the reliability of the device is improved.
In summary, in the disclosure, a welding signal and a parameter change signal sent by a spot welder are first received, where the welding signal is sent when the spot welder performs welding, and the parameter change signal is sent when the spot welder switches welding parameters, then after it is determined that the spot welder completes a current welding task, a first number of the received welding signals and a second number of the received parameter change signals are determined, and then the first number and the second number are determined, if the first number is different from a target number of welding spots included in a preset target welding mode, a first prompt message for indicating that the spot welder has missed welding or excessive welding is sent, and if the second number is not matched with a set of welding parameters included in the target welding mode, a second prompt message for indicating that the spot welder has failed welding is sent. The method and the device can be used for detecting whether the spot welding machine is welded in a missing mode or in a multi-welding mode, and meanwhile, whether the spot welding machine is welded in a wrong mode or not is expanded, and the welding detection efficiency is improved.
Although the preferred embodiments of the present disclosure have been described in detail with reference to the accompanying drawings, the present disclosure is not limited to the specific details of the embodiments, and other embodiments of the present disclosure can be easily conceived by those skilled in the art within the technical spirit of the present disclosure after considering the description and practicing the present disclosure, and all fall within the protection scope of the present disclosure.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable way without contradiction, and in order to avoid unnecessary repetition, the disclosure does not need to be separately described in various possible combinations, and should be considered as the disclosure of the disclosure as long as the concepts of the disclosure are not violated.
Claims (10)
1. A method of detecting a weld, the method comprising:
receiving a welding signal and a parameter change signal sent by a spot welding machine, wherein the welding signal is sent when the spot welding machine performs welding, and the parameter change signal is sent when the spot welding machine switches welding parameters;
determining a first number of the received welding signals and a second number of the received parameter change signals after determining that the spot welder completes a current welding task;
if the first number is different from the target number of the welding spots contained in the preset target welding mode, sending first prompt information, wherein the first prompt information is used for indicating that the spot welding machine generates welding missing or welding exceeding;
and if the second quantity is not matched with the welding parameter group contained in the target welding mode, sending second prompt information, wherein the second prompt information is used for indicating that the spot welding machine has wrong welding.
2. The method of claim 1, wherein the set of welding parameters comprises a welding parameter for each weld spot;
if the second quantity does not match the welding parameter set contained in the target welding mode, sending a second prompt message, including:
determining the number of changes of the welding parameters in the welding parameter group;
and if the second quantity is not the same as the change times, determining that the second quantity is not matched with the welding parameter group, and sending out second prompt information.
3. The method of claim 1, further comprising:
receiving a parameter signal corresponding to the welding signal sent by the spot welding machine, wherein the parameter signal is sent out when the spot welding machine performs welding and is used for indicating the spot welding machine to perform welding;
determining a target welding point corresponding to the welding signal according to the receiving sequence of the welding signal, and determining a target welding parameter corresponding to the target welding point in the welding parameter group;
and if the parameter signal corresponding to the welding signal is not matched with the target welding parameter, sending third prompt information, wherein the third prompt information is used for indicating that the target welding spot is welded incorrectly.
4. The method according to any one of claims 1-3, further comprising:
acquiring indication information of an object to be welded, wherein the indication information comprises: parameters of the object to be welded, and/or an image of the object to be welded;
and determining the target welding mode according to the indication information.
5. The method of claim 4, wherein after said determining said target welding mode based on said indication, said method further comprises:
and sending the target welding mode to the spot welder so that the spot welder performs welding according to the target welding mode.
6. A welded detection device, characterized in that the device comprises:
the transmission unit is used for receiving a welding signal and a parameter change signal sent by a spot welding machine, wherein the welding signal is sent when the spot welding machine performs welding, and the parameter change signal is sent when the spot welding machine switches welding parameters;
the processing unit is used for determining a first number of the received welding signals and a second number of the received parameter change signals after the spot welding machine is determined to complete the current welding task;
the prompting unit is used for sending first prompting information if the first quantity is different from the target quantity of the welding spots contained in a preset target welding mode, and the first prompting information is used for indicating that the spot welding machine generates welding missing or welding exceeding;
and the prompting unit is further used for sending second prompting information if the second quantity is not matched with the welding parameter group contained in the target welding mode, wherein the second prompting information is used for indicating that the spot welding machine has wrong welding.
7. The apparatus of claim 6, wherein the set of welding parameters comprises a welding parameter for each weld spot;
the processing unit is further to: determining the number of changes of the welding parameters in the welding parameter group;
and the prompting unit is used for determining that the second quantity is not matched with the welding parameter group and sending out second prompting information if the second quantity is not the same as the change times.
8. The apparatus of claim 6, wherein the transmission unit is further configured to:
receiving a parameter signal corresponding to the welding signal sent by the spot welding machine, wherein the parameter signal is sent out when the spot welding machine performs welding and is used for indicating the spot welding machine to perform welding;
the processing unit is further configured to determine a target welding point corresponding to the welding signal according to the receiving sequence of the welding signal, and determine a target welding parameter corresponding to the target welding point in the welding parameter set;
the prompt unit is further configured to send third prompt information if the parameter signal corresponding to the welding signal is not matched with the target welding parameter, where the third prompt information is used to indicate that the target welding spot is welded incorrectly.
9. The apparatus according to any one of claims 6-8, further comprising:
an input unit for acquiring indication information of an object to be welded, the indication information including: parameters of the object to be welded, and/or an image of the object to be welded;
the processing unit is further configured to determine the target welding mode according to the indication information.
10. The apparatus of claim 9, wherein the transmission unit is further configured to:
after the target welding mode is determined according to the indication information, the target welding mode is sent to the spot welding machine, so that the spot welding machine performs welding according to the target welding mode.
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