KR20230153958A - Welding machine - Google Patents

Abstract

The invention relates to a welding machine (1) of at least two parts (2) to be welded, which is configured to move along at least two parts (2) to be welded, the welding machine (1) comprising at least one mobile assembly (10). and the mobile assembly (10) comprises a pair of drive wheels (12) intended to move the welding machine (1) relative to the part (2) to be welded and at least two welding wheels (16). comprising at least one welding head (14), wherein the at least two welding wheels (16) are capable of welding the component (2) to be welded by rolling the welding wheel (16) relative to the component (2) to be welded, The welding machine 1 includes a control unit 30 of the welding head 14 , which control unit 30 can control the parameters of the welding machine 1 .

Description

welding machine{WELDING MACHINE}

The invention relates to a welding device comprising electrodes in the form of a welding wheel, which makes it possible to weld together the parts to be welded.

Current welding machines include not only a drive wheel that allows welding the parts to be welded, but also a drive member that can drive at least the drive wheel rotationally along the parts to be welded. The welding wheel is supplied with electric current while the welding machine is moving by means of a current unit to ensure welding of the parts to be welded. Current welding machines can follow welding instructions entered by an operator prior to implementing the welding method by the welding machine.

However, a problem with current welding machines is that the welding instructions cannot be continuously monitored during the welding process, so there are no control means by which the parameters of the welding machine can be controlled. Additionally, current welding machines do not provide modification means to directly modify the parameters of the welding machine during the welding process, requiring the welding machine to be stopped whenever modifications are required during the welding process.

Therefore, the object of the present invention is to propose a welding machine that can continuously control the parameters of the welding machine during the welding process and ensure at least partial automatic correction of the parameters of the welding machine directly during the welding of the parts to be welded. . Therefore, the present invention proposes a welding machine that is at least partially autonomous in the monitoring and control of the welding process.

Therefore, the present invention relates to a machine for welding at least two parts to be welded, the welding machine comprising at least one mobile assembly, the mobile assembly being at least intended to move the mobile assembly relative to the parts to be welded. a welding head comprising a pair of drive wheels and at least one welding head comprising at least two welding wheels, wherein the at least two welding wheels are intended to secure parts to be welded by rolling the welding wheels relative to the parts to be welded. The welding machine may include a control unit for controlling the welding head, the control unit being configured to control the contact pressure of the welding wheel with respect to the part to be welded and/or the speed of movement of the movable assembly along the part to be welded and/or the welding machine. Parameters of the welding machine can be controlled selected from the intensity of the current passing through the wheel and/or the duration of the pulse of current passing through the welding wheel and/or the position of the mobile assembly relative to the part to be welded.

The welding machine according to the invention, for example, welds together two protruding edges and/or fixed vanes of a sealing membrane forming the wall of a tank for storing and/or transporting cryogenic products such as liquefied natural gas. Can be used to weld two protruding edges.

For this purpose, the welding machine comprises at least one pair of drive wheels which provide, by means of a driving member, movement of the mobile assembly along the parts to be welded in a straight welding direction (also called the direction of travel of the welding machine). The drive member may be, for example, electrical, hydraulic, pneumatic or mechanical. Preferably, the drive member in the context of the invention is an electric motor.

The welding wheel allows the creation of a weld by contacting at least one of the parts to be welded (which may be at least one of a raised edge or a fixed flange). More specifically, according to a non-limiting example of the present invention, when welding the parts to be welded, the movement of the welding machine relative to the parts to be welded causes the welding wheel to rotate relative to the parts to be welded, supplied by the electricity supply unit. The current passing through the welding wheel enables the formation of a weld bead on the part to be welded. The pressure of the welding wheel on the part to be welded can be ensured by a pressurizing device controlled by a control unit. The pressurizing device may be, for example, a hydraulic cylinder.

Furthermore, the intensity of the current passing through the welding wheel is managed by a current transducer, which can be controlled by a control unit. The pulse time of the current is controlled by a control unit together with the transformer.

The position of the mobile assembly relative to the part to be welded can be ensured by a positioning element controlled by a control unit.

The function of the control unit of the welding machine is to at least partially control some of the parameters of the welding machine. The term "control" means that the control unit ensures, on the one hand, compliance with the expected reference thresholds for these parameters and, on the other hand, adjusts these values so that they converge to the reference thresholds. This means that information received regarding the parameter, such as its value, can be processed. Therefore, the advantage of such a control unit is that it can monitor and adjust welding machine parameters on its own at least in a partially autonomous manner.

It is also understood that the measurement of the pulse of current passing through the welding wheel is performed at the time the current is injected into the welding wheel. Each pulse is defined by two values, a first value corresponding to the maximum current intensity flowing in the welding wheel, and a second value corresponding to the minimum current intensity flowing in the welding wheel. Accordingly, the pulses of current passing through the welding wheel correspond to this alternation of maximum and minimum current strengths. Nevertheless, it should be noted that these pulses produce continuous welding.

The time during which the maximum intensity passes through the welding wheel is called hot time, and the time during which the minimum intensity passes through the welding wheel is called cold time.

The minimum intensity is lower than the maximum intensity. Preferably, the minimum intensity is non-zero.

According to a preferred example, the minimum intensity has a value of 10% of the maximum intensity. This feature allows optimizing the energy required to create a continuous weld.

According to a feature of the invention, the control unit is able to receive values of different parameters of the welding machine and control them.

The control unit is understood to process the values of different parameters of the welding machine and receive them in a way that allows monitoring said parameters of the welding machine.

According to a feature of the invention, the welding machine comprises at least one control interface capable of displaying at least the values of different parameters of the welding machine.

It is understood that the control unit, which receives the values of the parameters of the welding machine, transmits these values to the control interface, allowing the operator to directly monitor the parameters of the welding machine during the welding process.

According to one feature of the invention, the control interface is an input element for reference threshold values of different parameters of the welding machine.

It is understood that the control interface can integrate the reference thresholds entered by the operator and transmit them to the control unit, and the control unit can process the values \u200b\u200bof the parameters received in relation to the respective reference thresholds entered by the operator into the control interface. do.

According to a feature of the invention, the welding machine includes at least one cooling device for cooling the welding head, and the control unit is able to control parameter values of the cooling device.

The welding wheel cooling device includes an internal circuit that circulates the cooling liquid as close as possible to the welding wheel, and this circuit further includes a tank and a pump.

According to one feature of the invention, the parameters of the cooling device comprise at least one parameter from the flow rate of cooling liquid circulating in the welding machine and/or the temperature of said cooling liquid.

According to one feature of the invention, the welding machine has first determining means capable of detecting the value of a parameter related to the contact pressure of the welding wheel with respect to the part to be welded and/or the speed of movement of the mobile assembly along the part to be welded. second determining means capable of detecting the value of the parameter concerned, and/or third determining means capable of detecting the value of the parameter related to the intensity of the current passing through the welding wheel, and/or the mobile assembly for the part to be welded. fourth determining means capable of detecting a value of a parameter related to the position of and/or fifth determining means capable of detecting a value of a parameter related to the duration of the pulse of current passing through the welding wheel.

The determining means may be, for example, a sensor that determines the value of a different parameter, or a device that can determine the value of a parameter from another parameter measured elsewhere. The determining means is understood as making it possible to sequentially detect the values of the parameters and then transmit them to the control unit for processing.

According to one feature of the invention, the welding machine includes a carriage remote from the mobile assembly and connected by a wiring harness, and the control unit is supported by the mobile assembly or carriage.

The carriage of the welding machine is intended to support certain elements of the welding machine, such as tanks of cooling devices or electrical supply units and control interfaces. According to a preferred embodiment of the invention, the control unit is supported by a mobile assembly of the welding machine.

According to a feature of the invention, the mobile assembly comprises at least one electrical transducer. The converter includes, inter alia, a rectifier bridge, a capacitor and an inverter, which in particular converts the 50 Hz alternating current supplied from the power supply unit of the welding machine into 1000 Hz alternating current and converts this 1000 Hz alternating current into a pulse current delivered to the welding wheel. It can be transmitted to the rectifier.

According to a feature of the invention, the electrical converter and the control unit are supported by the same printed circuit board. According to a preferred embodiment, the printed circuit board carrying the transducer and the control unit is understood to be supported by a mobile assembly of the welding machine.

According to a feature of the invention, control of parameters and/or reception of parameter values is carried out continuously between the starting position of the mobile assembly and the arrival position of the mobile assembly.

In other words, parameter control and/or reception of parameter values is carried out continuously during the entire process of welding the parts to be welded.

The invention also relates to a method for controlling the welding of at least two parts to be welded by a welding machine according to any of the above-described features,

- an input step in a reference threshold control interface of at least a first parameter of the welding machine,

- receiving by the control unit at least one measured value of a first parameter of the welding machine,

- comparing by the control unit at least one measured value of the first parameter with a reference threshold value of the first parameter,

- controlling at least one of the parameters of the welding machine by the control unit if there is no convergence between the measured value of the first parameter and the reference threshold value of the first parameter.

Here, according to a first alternative, it is understood that the control unit is able to modify the first parameter so that the next measured value of the first parameter converges to the reference threshold value of the first parameter. Furthermore, according to a second alternative, the control unit may modify a parameter that is different from the first parameter so that the next measured value of the first parameter converges to the reference threshold value of the first parameter.

According to a feature of the invention, the controlling step includes adjusting at least one of the parameters of the welding machine during welding of the part to be welded so that the measured value of the first parameter converges to a reference threshold value of the first parameter. In other words, it is understood that the control unit is capable of autonomously correcting defects in at least one parameter of the welding machine so that the next measured value of the first parameter converges to a reference threshold value of said first parameter.

According to one feature of the invention, the controlling step includes stopping welding of the part to be welded when the at least one measured value of the first parameter deviates by more than 5% to 20% from the reference threshold value of the first parameter. Includes.

It is understood that if the value of the measured parameter deviates too far from the reference threshold, the control unit can stop the welding method, allowing, for example, an operator to provide correction.

According to a feature of the invention, the method is carried out continuously between the starting position of the mobile assembly and the arrival position of the mobile assembly.

According to one feature of the invention, during the receiving phase the control unit records the detected values of the different parameters.

Other features, details and advantages of the invention will appear more clearly by reading the description given below by way of reference to the drawings.
1 is a general perspective view of a tank for storing and/or transporting cryogenic products including at least two parts to be welded that form an airtight membrane of the tank.
Figure 2 is a perspective view of a welding machine according to the invention capable of welding two welded parts of Figure 1;
Figure 3 is a flow chart of the steps of a method for controlling welding of parts to be welded by a welding machine according to the invention.

First, it should be noted that while the drawings are detailed to embody the invention, these drawings, where appropriate, may of course be used to better define the invention. Additionally, it should be noted that these drawings show only exemplary embodiments of the invention. Finally, identical reference numbers designate identical elements in all drawings.

Figure 2 shows a welding machine 1 configured to move along at least two parts 2 to be welded. More specifically, the component to be welded (2) constitutes the sealing membrane (4) of the wall (6) of the tank (8) for storing and/or transporting cryogenic products, for example liquefied natural gas, Figure 1 It is shown in .

The welding machine 1 comprises at least one mobile assembly 10 which has a substantially parallelepiped shape and extends in a main extension direction P parallel to the longitudinal direction L of the welding machine 1 . The mobile assembly 10 of the welding machine 1 is intended to move along the part to be welded 2 and for this purpose includes at least one pair of drives intended to move the welding machine 1 relative to the part to be welded. Includes wheel 12. More specifically, the drive wheel 12 is arranged to be in contact with the component 2 to be welded by means of a pressing device 13, for example a hydraulic cylinder, and the drive member, not shown, is rotationally driven relative to the component to be welded. So that the mobile assembly 10 of the welding machine 1 is moved. The drive member may be, for example, electrical, hydraulic, pneumatic or mechanical. Preferably, the drive member in the context of the invention is an electric motor. According to an illustrative example of the invention, the mobile assembly 10 of the welding machine 1 comprises two pairs of drive wheels 12 arranged opposite each other in the main extension direction P of the mobile assembly 10. .

The mobile assembly 10 further includes a welding head 14 comprising at least two welding wheels 16, which weld by rolling the welding wheels 16 against the parts to be welded. Welds intended to secure parts to be created can be created. In an exemplary embodiment of the invention, the welding head 14 is arranged between two pairs of drive wheels 12 in the main extension direction P of the mobile assembly 10. The welding head 14 further comprises at least one device 15 for pressing the welding wheel 16 against the component 2 to be welded, the pressing device 15 taking the form of a hydraulic cylinder, for example. You can take it.

The welding machine 1 further comprises at least one cooling device 18 intended to cool at least the welding head 14 . More specifically, the cooling device 18 consists of an internal circuit (not shown) that circulates cooling liquid as close as possible to the welding wheel 16, and the cooling device 18 includes a coolant tank 20, a pump and a cooling device. It further includes units (not shown). This cooling device 18 makes it possible to prevent overheating of the welding wheel 16 in particular during operation of the welding machine 1 .

The welding machine 1 also includes a carriage 22 remote from the mobile assembly 10 and connected by a wiring harness 24 . Wiring harness 24 includes, among other things, the electrical and hydraulic connections necessary for operation of mobile assembly 10. The carriage 22 is designed in particular to support elements of the welding machine 1, for example the power supply unit 26 of the welding machine 1 as well as the tank 20, the pump and the cooling unit of the cooling device 18. It is composed.

In particular, the function of the power supply unit 26 is to at least provide the drive wheel drive member 12 to rotate the drive wheel drive member 12 in such a way as to move the mobile assembly 10 of the welding machine 1, and When the current passes through the part to be welded (2), this current is transmitted to the welding wheel 16 so that the welding wheel 16 can weld the part to be welded (2). Additionally, the current from the power supply unit 26 is alternating current. Accordingly, the welding machine 1 comprises an electrical transducer 28 (hereinafter referred to as transducer) arranged in the current path between the power supply unit 26 and the welding wheel 16, the transducer 28 providing the power supply. It is possible to convert the 50 Hz alternating current of the unit 26 into the 1000 Hz alternating current required for the welding wheel 16. The converter includes in particular at least one rectifier bridge, a capacitor and an inverter. The current from the converter output is directed to a transformer/rectifier that converts the 1000 Hz alternating current into a pulsed current that is transmitted to the welding wheel (16).

According to the invention, the welding machine 1 comprises a control unit 30 for the welding head 14, which controls the contact pressure of the welding wheel 16 with respect to the component 2 to be welded and /or the speed of movement of the mobile assembly (10) along the part (2) to be welded and/or the intensity of the current passing through the welding wheel (16) and/or the position of the welding machine (1) with respect to the part (2) to be welded. Parameters of the welding machine 1 selected from can be controlled. The control unit 30 can then control at least the intensity of the current delivered by the power supply unit 26 and/or the device for pressing the welding wheel and/or the drive wheel drive member 12 and , and/or depending on the forward speed of the welding machine 1, it is understood that the position of the welding machine 1 with respect to the part 2 to be welded can be determined.

The term control means that the control unit 30 controls the welding method continuously by the operator between the starting position of the mobile assembly 10 of the welding machine 1 with respect to the part 2 to be welded and the arrival position of the mobile assembly 10. This means that it is possible to process the values of different parameters of the receiving welding machine 1 in a way that allows them to be monitored. The starting position is understood as the position of the movable assembly 10 on the part to be welded 2 at which the welding is desired to begin, and the arrival position is understood as the position of the movable assembly 10 on the part to be welded 2 at which the welding is desired to end. do. This position of the mobile assembly 10 is determined by a positioning member, optionally mounted on the mobile assembly 10 as a component of the welding machine, which is controlled by a control unit 30 .

According to the invention, the control unit 30 is supported by a mobile assembly 10 or a carriage 22 of the welding machine 1 . According to a preferred embodiment of the invention, the control unit (30) is supported by a mobile assembly (10).

Furthermore, according to one example of the invention, the transducer 28 is supported by the mobile assembly 10 of the welding machine 1 . More specifically, transducer 28 and control unit 30 are supported by the same printed circuit board, which is supported by movable assembly 10 .

According to one example of the invention, the control unit 30 may control parameter values of the cooling device 18 . More specifically, the parameters of the cooling device 18 comprise at least one parameter from the flow rate of cooling liquid circulating in the welding machine 1 and/or the temperature of said cooling liquid.

According to the invention, the control unit 30 can receive values of different parameters from the welding machine 1 that it can control. More specifically, the welding machine 1 has at least first determining means 32a capable of detecting the value of a parameter related to the contact pressure of the welding wheel 16 with respect to the component 2 to be welded, and/or welding Second determining means 32b capable of detecting the value of a parameter related to the speed of movement of the mobile assembly 10 along the part 2 to be used, and/or a parameter related to the intensity of the current passing through the welding wheel 16. third determining means (32c) capable of detecting the value of or fifth determining means 32e capable of detecting the value of a parameter related to the duration of the pulse of current passing through the welding wheel 16.

The determining means 32a, 32b, 32c, 32d, 32e can be determined, for example, by the contact pressure applied by the pressing device 15 of the welding wheel 16, and/or the rotational speed of the drive wheel 12, and/ or one of the following parameters: the intensity of the current circulating in the welding wheel 16, and/or the position of the welding machine 1 relative to the part to be welded, and/or the duration of the current pulse passing through the welding wheel 16. It is a sensor configured to detect the value of the parameter. The determining means 32a, 32b, 32c, 32d, 32e may be devices capable of determining the value of one of the parameters from another parameter measured elsewhere. For example, one of the determining means 32d is determined by one of the sensors and determines the position of the part 2 to be welded as a function of the speed value of the mobile assembly 10 with respect to the starting position of the mobile assembly 10. It may be a device capable of determining the position of the movable assembly 10.

The welding machine 1 also has sixth determining means 32f, which allow detecting a value related to the flow rate of the cooling liquid circulating within the welding machine 1, and/or arranged in the tank 20 to cool the cooling liquid. It may include a seventh determining means (32g) capable of detecting the temperature of the liquid. More specifically, the sixth determining means 32f is meant to determine the rotational speed of the pump.

The determination means 32a, 32b, 32c, 32d, 32e, 32f, 32g then transmit at least one measured value for at least one of the parameters to the control unit 30, thereby We can handle it together. The method of controlling welding by the control device is explained later in the remainder of the detailed description.

According to the invention, the welding machine 1 comprises at least one control interface 34 capable of displaying at least the values of different parameters of the welding machine 1 received by the control unit 30 . More specifically, according to one example of the invention, the control interface 34 is supported by the carriage 22 and allows the operator to follow changes in the parameters of the welding machine 1 during the welding process. The control interface 34 also allows the operator to enter reference threshold values of other parameters of the welding machine 1 for each parameter of the welding machine 1, i.e. predefined values and/or intervals of predefined values. do. “Reference threshold” means the values and/or intervals of values expected by the operator for different parameters of the welding machine 1 during the welding process. According to another example of the invention, not shown, the control interface may be supported by a portable device separate from the carriage.

From the above, the control interface 34 and the control unit 30 can communicate with each other so that the control interface 34 can display values received by the control unit 30 and the control unit 30 can It is understood that the received values may be processed against reference thresholds entered into the control interface 34.

Now, a method of controlling the welding of at least two parts by the welding machine 1 according to the invention is explained with reference to FIGS. 2 and 3 .

The control method includes at least one input step (100) corresponding to the step of the operator inputting into the control interface (34) a reference threshold value for at least one of the parameters of the welding machine (1). According to one example of the invention, the operator enters a set of reference threshold values for all parameters of the welding machine 1. Accordingly, once the reference thresholds are entered, they are communicated to the control device 30 by means of the control interface 34. It is understood that the control unit 30 then uses the reference threshold values entered into the control interface 34 as expected values or intervals of values for each parameter of the welding machine 1 . It is also understood that the control unit 30 and the control interface 34 are configured to communicate with each other.

The control method further provides that, following step 100, the control unit 30 inputs the values of the parameters from the welding machine 1 detected by the determining means 32a, 32b, 32c, 32d, 32e, 32f, 32g. It includes a receiving step (200) of receiving.

Thereafter, the control unit 30 measures the received value of at least one of the parameters by one of the determining means 32a, 32b, 32c, 32d, 32e, 32f, 32g against a reference threshold value of said value. Comparison step 300 may be performed. In other words, the control unit 30 successively receives the values detected by the different determination means 32a, 32b, 32c, 32d, 32e, 32f, 32g from the welding machine 1 and sets each of these received values to Compare with the reference threshold value entered for the parameter.

Moreover, according to the invention, the values received by the control unit 30 are also transmitted to the control interface 34 in such a way that they can be monitored by the operator. According to one example of the invention, the control interface 34 can record the values received by the control unit 30 in such a way as to form a database of said values of the parameters of the welding machine 1 .

When the comparing step 300 is performed, the control unit 30 determines between the value received by at least one of the determining means 32a, 32b, 32c, 32d, 32e, 32f, 32g and a reference threshold value of said parameter. If there is no convergence, step 400 of controlling at least one of the parameters of the welding machine 1 is optionally implemented. In other words, when the comparing step 300 ends, in the deviation between the value of the parameter received by the control unit 30 and the previously input reference threshold, the control unit 30 performs the controlling step 400 , more specifically, the controlling step 400 implements a step 401 of adjusting, during which step, a parameter and/or at least one other unique parameter is modified so that the next received value of the parameter is the input of said parameter. converges toward the critical value. This controlling step 400 is understood to apply to all parameters of the welding machine 1 .

Moreover, from this adjusting step 401, it should be understood that modification of one of the parameters may include adjustment of another different parameter. If, for example, the intensity of the current passing through the welding wheel needs to be corrected closer to the input threshold, the control unit adjusts the intensity of the current directly at the output of the power supply unit.

In other words, the input threshold value for each parameter is fixed. The tuning step is performed in such a way that there is convergence between the input input threshold and the measurements performed on this parameter. The step of adjusting may relate to one or more parameters of the welding machine.

According to an example of use of the control method, the received value of at least one of the parameters exceeds the reference threshold by, for example, 5% for the duration of the current pulse passing through the welding wheel 16, and/or When the contact pressure of the welding wheel 16 deviates by more than 20%, the control unit 30 implements a step 402 of stopping the controlling step 400, during which the control unit 30 Welding of the parts to be welded by the welding machine 1 is stopped. In other words, if the received value of the parameter deviates too much from the reference threshold to be adjusted during the adjusting step 401, the control unit 30 stops welding the part to be welded, allowing the operator to use one of the welding machines 1. Allows you to manually modify the above parameter(s) or perform control operations on the welding or maintenance machine. For example, maintenance operations can be performed to clean welding and/or drive wheels when they become clogged.

In addition, if it is determined in the comparing step 300 that the received value of the parameter matches the reference threshold value of the parameter, the control unit 30 does not make any modifications to the parameter and performs the receiving step 200. It is understood that the control method is resumed at .

Accordingly, when the controlling step 400 or the comparing step 300 is performed, the control unit 30 controls the control unit 30 from receiving step 200 if the reference threshold value of the parameter of the welding machine 1 has not changed. Repeat the method. If the reference threshold value of the parameter needs to be changed, the method is repeated from the input step 100.

According to one example of the invention, during the adjusting step 401 and the stopping step 402 of the controlling step 400, the control interface 34 signals the implementation of these steps 401, 402, e.g. , indicated to the operator by audible and/or visible signals.

Furthermore, the control method is understood to be carried out continuously between the starting position of the mobile assembly (10) and the arrival position of the mobile assembly (10). The continuity of this control method ensures optimal monitoring of the welding method of the parts 2 to be welded, thereby improving the quality of the weld.

However, the invention just described cannot be limited to the means and arrangements exclusively described and illustrated, but also applies to all equivalent means or arrangements, and to any combination of such means or arrangements.

Claims (14)

A machine (1) for welding at least two parts (2) to be welded, comprising:
The welding machine (1) comprises at least one mobile assembly (10), the mobile assembly (10) comprising at least one pair of mobile assemblies (10) configured to move the mobile assembly (10) relative to the component (2) to be welded. comprising a drive wheel (12) and at least one welding head (14) comprising at least two welding wheels (16), the at least two welding wheels (16) being positioned relative to the component (2) to be welded. By rolling a welding wheel (16) it is possible to create a weld configured to secure the part (2) to be welded, the welding machine (1) comprising a control unit (30) of the welding head (14), The control unit 30 controls the contact pressure of the welding wheel 16 with respect to the part 2 to be welded and/or the speed of movement of the mobile assembly 10 along the part 2 to be welded and/or the welding speed. selected from the intensity of the current passing through the wheel 16 and/or the duration of the pulse of current passing through the welding wheel 16 and/or the position of the mobile assembly 10 relative to the component 2 to be welded. can control the parameters of the welding machine 1, and the control unit 30 can receive values of different parameters from the welding machine 1 and control them.
welding machine. According to claim 1,
comprising at least one control interface (34) capable of displaying at least the values of different parameters of the welding machine (1).
welding machine. According to claim 1,
The control interface 34 is an input member for inputting reference threshold values of different parameters of the welding machine 1.
welding machine. The method according to any one of claims 1 to 3,
At least one cooling device (18) of the welding head (14), wherein the control unit (30) is capable of controlling parameter values of the cooling device (18).
welding machine. According to claim 4,
The parameters of the cooling device (18) comprise at least one parameter from the flow rate of the coolant flowing in the welding machine (1) and/or the temperature of the cooling liquid.
welding machine. The method according to any one of claims 1 to 5,
First determining means (32a) capable of detecting the value of a parameter related to the contact pressure of the welding wheel (16) with respect to the component (2) to be welded, and/or the mobile device (32a) along the component (2) to be welded. Second determining means (32b) capable of detecting the value of a parameter related to the speed of movement of the assembly (10), and/or capable of detecting the value of a parameter related to the intensity of the current passing through the welding wheel (16). Third determining means (32c), and/or fourth determining means (32d) capable of detecting the value of a parameter related to the position of the mobile assembly (10) with respect to the part (2) to be welded, and/or comprising fifth determining means (32e) capable of detecting the value of a parameter related to the duration of the pulse of current passing through the welding wheel (16).
welding machine. The method according to any one of claims 1 to 6,
a carriage (22) remote from the mobile assembly and connected to the mobile assembly (10) by a wiring harness (24), wherein the control unit (30) is connected to the mobile assembly (10) or the carriage (22). ) supported by
welding machine. The method according to any one of claims 1 to 7,
The mobile assembly (10) includes at least one electrical transducer (28).
welding machine. According to claim 8,
The electrical converter 28 and the control unit 30 are supported by the same printed circuit board.
welding machine. The method according to any one of claims 1 to 9,
Controlling the parameters and/or receiving the parameter values is performed continuously between the starting position of the mobile assembly (10) and the arrival position of the mobile assembly (10).
welding machine. A method for controlling welding of at least two parts to be welded (2) by means of a welding machine (1) according to any one of claims 1 to 10, comprising:
- inputting (100) a reference threshold value of at least one first parameter of the welding machine (1) into the control interface (34);
- receiving (200) by the control unit (30) at least one measured value of a first parameter of the welding machine (1);
- comparing (300) by said control unit (30) at least one measured value of said first parameter with a reference threshold value of said first parameter;
- controlling at least one of the parameters of the welding machine (1) by the control unit (30) if there is no convergence between the measured value of the first parameter and the reference threshold value of the first parameter (400). ) containing
Welding control method. According to claim 11,
The controlling step 400 controls the parameters of the welding machine 1 when welding the part to be welded 2, so that the measured value of the first parameter converges to a reference threshold value of the first parameter. Comprising a step 401 of adjusting at least one of
Welding control method. The method of claim 11 or 12,
The controlling step (400) includes stopping welding of the component to be welded (2) when at least one measured value of the first parameter deviates by more than 5% to 20% from a reference threshold value of the first parameter. Comprising step 402
Welding control method. The method according to any one of claims 11 to 13,
The method operates continuously between a starting position of the mobile assembly and an arrival position of the mobile assembly (10).
Welding control method.