Argon arc welding equipment and methods for complex sheet metal parts

Abstract

This application belongs to the field of welding equipment and discloses an argon arc welding device and method for complex sheet metal parts. The device includes a base, a welding guide rail, a support assembly, a welding assembly, and a welding control assembly. One end of the welding guide rail is connected to the base, and the top is supported by the support assembly mounted on the base. The welding assembly includes a sliding seat, a drive assembly, a welding head, and two lateral force detection heads. The sliding seat is slidably fitted onto the welding guide rail, and the guide rail guides the sliding seat along the seam to be welded. The welding head is mounted on the sliding seat for welding. The two lateral force detection heads are located on both sides of the welding head, with their ends abutting against the workpiece surfaces on both sides of the seam to be welded, and can detect the corresponding contact pressure. The welding head and the drive assembly are electrically connected to the welding control assembly. The control assembly uses the pressure difference between the two lateral force detection heads as the surface tracking deviation value. When this value is greater than or equal to a preset threshold, the drive assembly stops moving, and the welding head stops welding, which can improve the welding efficiency of complex sheet metal parts.

Description

Technical Field

[0001] This application relates to the field of welding equipment technology, and more specifically, to an argon arc welding device and an argon arc welding method for complex sheet metal parts. Background Technology

[0002] In the field of sheet metal parts processing technology, manual welding is now widely used for welding of sheet metal parts with complex structures. Operators need to complete a series of operations according to the preset welding process requirements, such as part positioning, weld identification, welding parameter adjustment, and welding segment by segment. During the process, the operator's experience is required to control the welding accuracy and adjust to the welding difficulties caused by differences in the part structure. This operation method is widely used in the welding of small batches of non-standard complex sheet metal parts. It is suitable for flexible production needs of multiple varieties and small batches. It does not require investment in dedicated automated welding tooling equipment, and the initial production line deployment cost is low. The operation process can be flexibly adjusted according to the structural characteristics of the parts and welding requirements.

[0003] When welding complex sheet metal parts manually, operators must perform operations such as part alignment, weld position confirmation, and welding posture adjustment one by one. The welding cycle for a single part is long, and the number of parts that can be welded per unit time is limited, resulting in low overall efficiency and making it difficult to meet the production capacity requirements of large-scale mass production. Furthermore, the operator's working condition is greatly affected by factors such as fatigue and experience, leading to unstable welding speed and poor weld uniformity. This necessitates significant additional investment in subsequent inspection and rework costs, further reducing overall production efficiency. In addition, welds on complex sheet metal parts are often located on irregular curved surfaces and in narrow angles, requiring operators to frequently adjust their working posture, resulting in a high workload and further limiting the stability of continuous operation efficiency, making it impossible to guarantee consistent production rhythm. Summary of the Invention

[0004] The purpose of this application is to provide an argon arc welding device and an argon arc welding method for complex sheet metal parts, which solves the technical problem of low efficiency when welding complex sheet metal parts manually, and achieves the technical effect of improving the efficiency of welding complex sheet metal parts.

[0005] In a first aspect, embodiments of this application provide an argon arc welding device for complex sheet metal parts, including a base, a welding guide rail, a support assembly, a welding assembly, and a welding control assembly. One end of the welding guide rail is connected to the base, and the support assembly is disposed on the base, with its top supporting the welding guide rail. The welding assembly includes a sliding seat, a drive assembly, a welding head, and two lateral force detection heads. The sliding seat is slidably connected to the welding guide rail. The drive assembly is disposed on the sliding seat and is used to drive the sliding seat to move along the welding guide rail. The welding guide rail guides the sliding seat to move along the seam to be welded. The welding head is disposed on the sliding seat and is used to weld the seam to be welded. Two lateral force detection heads are respectively located on both sides of the welding head on the sliding seat. The ends of the two lateral force detection heads abut against the workpiece surfaces on both sides of the weld seam. The two lateral force detection heads are used to detect the pressure between the lateral force detection heads and the workpiece surfaces on both sides of the weld seam. The welding head, drive assembly, and welding control assembly are electrically connected. The welding control assembly is used to determine the difference in pressure detected by the two lateral force detection heads as the surface tracking deviation value. When the surface tracking deviation value is greater than or equal to the preset surface tracking deviation value, the welding control assembly controls the drive assembly to stop moving and controls the welding head to stop welding.

[0006] In one possible implementation, the sliding seat has a detection head mounting hole, and a limiting bolt is provided at the opening of the detection head mounting hole; the lateral force detection head includes a support rod, a limiting block, a roller, a return spring, and a pressure sensor. The roller is located at one end of the support rod and is used to roll and connect with the workpiece surfaces on both sides of the weld seam. The limiting block is located in the middle of the support rod, and the other end of the support rod is located in the detection head mounting hole. The limiting bolt limits the limiting block to prevent the support rod from coming out of the detection head mounting hole. The return spring is located in the detection head mounting hole and is used to push the support rod back to its original position. The pressure sensor is located between the return spring and the bottom of the detection head mounting hole. The pressure sensor is used to detect the pressure between the roller and the workpiece surfaces on both sides of the weld seam. The pressure sensor is electrically connected to the welding control assembly.

[0007] In another possible implementation, the support rod includes a first support section and a second support section. A roller is provided on the first support section, and a limiting block is provided on the second support section. The first support section has multiple positioning holes along its length, and the second support section has a telescopic sleeve. A first positioning bolt passes through the telescopic sleeve. The first positioning bolt adjusts the positioning position of the multiple positioning holes to adjust the support height of the first support section on both sides of the weld seam on the surface of the workpiece with different shapes.

[0008] In another possible implementation, the welding guide rail has an I-shaped cross-section, and the drive assembly includes two sets of rollers and a reduction drive unit. The two sets of rollers are respectively rolled on both sides of the welding guide rail, and the shafts of the two sets of rollers are connected by gear transmission to drive the two sets of rollers to rotate in opposite directions. The shaft of one set of rollers is driven to rotate by the reduction drive unit.

[0009] In another possible implementation, the deceleration drive unit is located in the first region of the slide block, and the welding head and two lateral force detection heads are located in the second region of the slide block. The first and second regions are symmetrically distributed on the top of the slide block to improve the smoothness of the slide block's movement.

[0010] In another possible implementation, the base is provided with a T-shaped groove and a second positioning bolt. The support assembly includes a support seat, a support block and a third positioning bolt. The support seat is slidably disposed in the T-shaped groove. The second positioning bolt is used to position the support seat in the T-shaped groove. The support block is provided with a long strip-shaped groove. The third positioning bolt passes through the support seat and can slide along the groove. The third positioning bolt can slide along the groove to adjust the vertical height of the support block.

[0011] In another possible implementation, the bottom of the sliding seat has an opening that allows the support block to pass through. A first photoelectric sensor is installed inside the opening to detect the state of the support block passing through the opening. The first photoelectric sensor is electrically connected to the welding control component. The welding control component is also used to acquire a first time period from the start of welding to the support block passing through the opening. When the first time period is greater than or equal to a preset first time period, the welding control component controls the drive component to stop moving, controls the welding head to stop welding, and issues a prompt message to inspect the welding component.

[0012] In another possible implementation, the welding guide rail is provided with an end plug at its end. The end plug is provided with a second photoelectric sensor for detecting the proximity of the sliding seat and the end plug. The second photoelectric sensor is electrically connected to the welding control component. The welding control component is also used to acquire a second time period from the start of welding to the sliding seat approaching the end plug. When the second time period is greater than or equal to a preset second time period, the welding control component controls the drive component to stop moving, controls the welding head to stop welding, and issues a prompt message to inspect the welding component.

[0013] In another possible implementation, the welding control component is also used to determine the difference between the second time period and the first time period as a third time period. When the third time period is greater than or equal to a preset third time period, the welding control component controls the drive component to stop moving, controls the welding head to stop welding, and issues a prompt message to inspect the welding component.

[0014] Secondly, embodiments of this application provide an argon arc welding method using the aforementioned argon arc welding equipment for complex sheet metal parts. The method includes: starting the welding assembly to move along the welding guide rail to begin welding; detecting the pressure on the workpiece surfaces on both sides of the weld seam using two lateral force detection heads; determining the difference between the pressures detected by the two lateral force detection heads as a surface tracking deviation value; and controlling the welding head to stop welding when the surface tracking deviation value is greater than or equal to a preset surface tracking deviation value.

[0015] The beneficial effects of the embodiments in this application compared with the prior art are: This application provides an argon arc welding device for complex sheet metal parts, including a base, a welding guide rail, a support assembly, a welding assembly, and a welding control assembly. One end of the welding guide rail is connected to the base, and the support assembly is disposed on the base, with its top supporting the welding guide rail. The welding assembly includes a sliding seat, a drive assembly, a welding head, and two lateral force detection heads. The sliding seat is slidably connected to the welding guide rail, and the drive assembly is disposed on the sliding seat. The drive assembly drives the sliding seat to move along the welding guide rail, and the welding guide rail guides the sliding seat to move along the seam to be welded. The welding head is disposed on the sliding seat and is used to weld the seam to be welded. The two lateral force detection heads are respectively disposed on both sides of the welding head on the sliding seat, and the ends of the two lateral force detection heads abut against the workpiece surfaces on both sides of the seam to be welded. Two lateral force detection heads are used to detect the pressure on the workpiece surfaces on both sides of the weld seam. The welding head, drive assembly, and welding control assembly are electrically connected. The welding control assembly determines the difference between the pressures detected by the two lateral force detection heads as the surface tracking deviation value. When the surface tracking deviation value is greater than or equal to the preset surface tracking deviation value, the welding control assembly controls the drive assembly to stop moving and controls the welding head to stop welding. The sliding seat moves along the welding guide rail under the drive assembly. The welding guide rail can be pre-laid according to the weld seam direction of complex sheet metal parts, guiding the welding head to move stably along the weld seam. There is no need for manual operation of the welding head. The lateral force detection heads collect the pressure on the workpiece surfaces on both sides of the weld seam in real time. The welding control assembly calculates the difference between the two as the surface tracking deviation value. When the surface tracking deviation value reaches the preset threshold, the shutdown mechanism is triggered immediately. This can stop the operation immediately when abnormalities such as weld seam deviation or workpiece surface deformation occur, avoiding unqualified welding such as off-center welding or incomplete welding, and effectively reducing the welding defect rate of complex sheet metal parts. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A front view structural schematic diagram of an argon arc welding equipment for complex sheet metal parts provided in this application embodiment; Figure 2 A schematic diagram of the structure of a welding assembly in an argon arc welding device for complex sheet metal parts, provided in an embodiment of this application; Figure 3 A partial structural schematic diagram of a lateral force detection head in a welding assembly provided in an embodiment of this application; Figure 4 A schematic diagram of the control structure of an argon arc welding device for complex sheet metal parts provided in an embodiment of this application; Figure 5 This is a schematic flowchart of an argon arc welding method provided in an embodiment of this application. Detailed Implementation

[0018] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0019] It should be noted that when a component or structure is referred to as being "fixed to" or "set on" another component or structure, it can be directly on or indirectly on the other component or structure. When a component or structure is referred to as being "connected to" another component or structure, it can be directly connected to or indirectly connected to the other component or structure.

[0020] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device, component, or structure referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] When welding complex sheet metal parts manually, the number of parts that can be welded per unit time is limited, resulting in low overall work efficiency and making it difficult to meet the production capacity requirements of large-scale mass production scenarios.

[0023] Based on the above reasons, this application provides an argon arc welding device for complex sheet metal parts, including a base, a welding guide rail, a support assembly, a welding assembly, and a welding control assembly. One end of the welding guide rail is connected to the base, and the support assembly is disposed on the base, with the top of the support assembly supporting the welding guide rail. The welding assembly includes a sliding seat, a drive assembly, a welding head, and two lateral force detection heads. The sliding seat is slidably connected to the welding guide rail, and the drive assembly is disposed on the sliding seat. The drive assembly is used to drive the sliding seat to move along the welding guide rail, and the welding guide rail is used to guide the sliding seat to move along the seam to be welded. The welding head is disposed on the sliding seat and is used to weld the seam to be welded. The two lateral force detection heads are respectively disposed on both sides of the welding head on the sliding seat, and the ends of the two lateral force detection heads abut against the workpiece surfaces on both sides of the seam to be welded. Two lateral force detection heads are used to detect the pressure on the workpiece surfaces on both sides of the weld seam. The welding head, drive assembly, and welding control assembly are electrically connected. The welding control assembly determines the difference between the pressures detected by the two lateral force detection heads as the surface tracking deviation value. When the surface tracking deviation value is greater than or equal to a preset surface tracking deviation value, the welding control assembly controls the drive assembly to stop moving and controls the welding head to stop welding. In this embodiment, the sliding seat moves along the welding guide rail under the drive assembly. The welding guide rail can be pre-laid according to the weld seam direction of complex sheet metal parts, guiding the welding head to move stably along the weld seam. There is no need for manual operation of the welding head. The lateral force detection heads collect the pressure on the workpiece surfaces on both sides of the weld seam in real time. The welding control assembly calculates the difference between the two as the surface tracking deviation value. When the surface tracking deviation value reaches a preset threshold, the shutdown mechanism is triggered immediately. This allows the operation to stop immediately when abnormalities such as weld seam deviation or workpiece surface deformation occur, avoiding unqualified welding conditions such as off-center welding or incomplete welding, and effectively reducing the welding defect rate of complex sheet metal parts.

[0024] In some scenarios, the argon arc welding equipment for complex sheet metal parts according to the embodiments of this application can be applied to the welding operation of body panels in the automotive manufacturing field, adapting to the precise welding of curved and irregular sheet metal splices, and reducing welding deviation and missed welding problems.

[0025] In other scenarios, the argon arc welding equipment for complex sheet metal parts according to the embodiments of this application can also be applied to the sheet metal welding of irregularly shaped housings of electronic devices, automatically correcting and warning of complex welds with high precision requirements, and ensuring welding reliability.

[0026] The following is a detailed description of an argon arc welding device for complex sheet metal parts provided in the embodiments of this application, using specific examples.

[0027] Figure 1 This is a front view schematic diagram of an argon arc welding device for complex sheet metal parts, provided in an embodiment of this application. Figure 2 This is a schematic diagram of the structure of a welding assembly in an argon arc welding device for complex sheet metal parts, provided in an embodiment of this application. Figure 3 This is a partial structural diagram of a lateral force detection head in a welding assembly provided in an embodiment of this application. Figure 4 This application provides a schematic diagram of the control structure of an argon arc welding device for complex sheet metal parts, as shown in the embodiment of the present application. Figures 1 to 4 As shown in the figure, this application provides an argon arc welding device for complex sheet metal parts, which will be described in detail below.

[0028] In some implementations, the assembly includes a base 1, a welding guide rail 2, a support component 3, a welding component 4, and a welding control component 5. One end of the welding guide rail 2 is connected to the base 1, and the support component 3 is mounted on the base 1, with its top supporting the welding guide rail 2. The welding component 4 includes a sliding seat 41, a drive component 42, a welding head 43, and two lateral force detection heads 44. The sliding seat 41 is slidably connected to the welding guide rail 2. The drive component 42 is mounted on the sliding seat 41 and is used to drive the sliding seat 41 to move along the welding guide rail 2. The welding guide rail 2 guides the sliding seat 41 to move along the seam to be welded. The welding head 43 is mounted on the sliding seat 41 and is used to weld the seam to be welded. The two lateral force detection heads 44 are respectively mounted on both sides of the welding head 43 on the sliding seat 41, with their ends abutting against the workpiece surfaces on both sides of the seam to be welded.

[0029] In this implementation, the complete welding device includes a base 1, a welding guide rail 2, a support component 3, a welding component 4, and a welding control component 5. One end of the welding guide rail 2 is connected and fixed to the base 1. The support component 3 is located above the base 1, and the top of the support component 3 can provide support and stability for the end of the welding guide rail 2 away from the base 1.

[0030] For example, the bottom end of the welding guide rail 2 can be locked and fixed to the base 1 with bolts. The support component 3 adopts a telescopic support column structure. The bottom end of the support column is fixed to the base 1, and the top end supports the lower side wall of the welding guide rail 2, keeping the welding guide rail 2 in a stable installation state.

[0031] In this implementation, the welding assembly 4 includes a sliding seat 41, a driving assembly 42, a welding head 43, and two lateral force detection heads 44. The sliding seat 41 can be connected to the welding guide rail 2 by a sliding sleeve. The sliding seat 41 can slide and move along the extension direction of the welding guide rail 2. The driving assembly 42 can be installed on the sliding seat 41. The driving assembly 42 can drive the sliding seat 41 to complete the displacement action along the welding guide rail 2. The welding guide rail 2 can guide the sliding seat 41 to move along the extension direction of the seam to be welded.

[0032] For example, the welding guide rail 2 can be set as an I-shaped cross section guide rail, and the sliding seat 41 is provided with a through sleeve groove that matches the I-shaped cross section. The upper and lower inner walls of the sleeve groove are respectively attached to the outer sides of the upper and lower flanges of the welding guide rail 2, and the inner side of the middle part of the sleeve groove is attached to the outer side of the web of the welding guide rail 2, so that the sliding seat 41 can slide stably along the welding guide rail 2.

[0033] For example, multiple polytetrafluoroethylene wear-resistant sliders can be embedded in the upper and lower inner walls of the sleeve groove of the sliding seat 41. The upper and lower outer sides of the welding guide rail 2 are provided with limiting grooves extending along the length direction. The wear-resistant sliders are correspondingly inserted into the limiting grooves. When sliding, the wear-resistant sliders slide along the limiting grooves, which can both restrict the sliding seat 41 from disengaging from the welding guide rail 2 and reduce the friction during the sliding process, thus maintaining the stability of the sliding.

[0034] In this implementation, the welding head 43 can be installed and fixed on the sliding seat 41. The welding head 43 can be aligned with the seam to be welded to complete the welding operation. The two lateral force detection heads 44 can be installed on the sliding seat 41 and on the left and right sides of the welding head 43, respectively. The ends of the two lateral force detection heads 44 can be in contact with the workpiece surfaces on both sides of the seam to be welded.

[0035] For example, two lateral force detection heads 44 can be connected to the sliding seat 41 through a mounting base with a pre-tightening spring. The pre-tightening spring can keep the end of the lateral force detection head 44 pressed against the workpiece surface. When the sliding seat 41 moves along the welding guide rail 2, the lateral force detection head 44 can move synchronously with the sliding seat 41 to detect the lateral offset force on the sliding seat 41 in real time.

[0036] For example, when the sliding seat 41 shifts to the left of the welding head 43, the lateral force detection head 44 located on the left side of the weld seam is subjected to a greater compressive force from the workpiece surface, and the corresponding spring is compressed. The lateral force detection head 44 transmits the detected pressure signal to the welding control assembly 5. When the sliding seat 41 shifts to the right, the lateral force detection head 44 located on the right side is subjected to a greater compressive force.

[0037] It should be noted that the welding guide rail 2 can be bent and twisted in three-dimensional space, and can adapt to welds with different spatial structures. When welding is required for welds with different bending and twisting structures, only the welding guide rail 2 needs to be replaced, and the welding component 4 does not need to be replaced, so that welding can be completed for welds with different bending and twisting structures.

[0038] In some implementations, two lateral force detection heads 44 are used to detect the pressure on the workpiece surfaces on both sides of the weld seam. The welding head 43, drive assembly 42, and welding control assembly 5 are electrically connected. The welding control assembly 5 is used to determine the difference in pressure detected by the two lateral force detection heads 44 as a surface tracking deviation value. When the surface tracking deviation value is greater than or equal to a preset surface tracking deviation value, the welding control assembly 5 controls the drive assembly 42 to stop moving and controls the welding head 43 to stop welding.

[0039] In this implementation, the two lateral force detection heads 44 can detect the contact pressure between themselves and the workpiece surfaces on both sides of the weld seam. The welding head 43 and the drive assembly 42 are electrically connected to the welding control assembly 5, which facilitates the transmission of control signals by the welding control assembly 5.

[0040] For example, the lateral force detection head 44 can use a resistive pressure sensor as the detection core. The detection end of the sensor protrudes and abuts against the surface of the workpiece, converting the pressure signal into an electrical signal and transmitting it to the welding control component 5. The drive component 42 and the welding head 43 are connected to the signal output end of the welding control component 5 through cables, respectively.

[0041] For example, the welding control component 5 can sequentially read the real-time pressure analog signals output by the left lateral force detection head 44 and the right lateral force detection head 44 according to a fixed acquisition cycle, convert the analog signals into calculable digital pressure values, and then take the absolute value of the difference between the two digital pressure values ​​to obtain the surface tracking deviation value.

[0042] In this implementation, the welding control component 5 can calculate the surface tracking deviation value, compare the surface tracking deviation value with the preset surface tracking deviation value stored in the pre-stored database, and output the corresponding control command according to the comparison result. When the surface tracking deviation value is greater than or equal to the preset surface tracking deviation value, the welding control component 5 can control the drive component 42 to stop moving the sliding seat 41, and at the same time control the welding head 43 to stop welding operations, so that the operator can adjust the position and troubleshoot the problem.

[0043] For example, when the surface tracking deviation value meets the triggering condition, the welding control component 5 first sends a stop driving level signal to the drive component 42. After receiving the signal, the drive component 42 cuts off the power output, and the sliding seat 41 stops moving along the welding guide rail 2. Then, the welding control component 5 sends a stop welding control signal to the welding head 43, cuts off the welding power supply to the welding head 43, and the welding head 43 stops outputting welding energy.

[0044] In this implementation, the drive component drives the sliding seat to move along the welding guide rail, and the welding head follows the movement of the sliding seat to carry out welding operations on the weld seam of complex sheet metal parts. The welding guide rail can guide the sliding seat to always move along the extension direction of the weld seam, eliminating the need for manual adjustment of the travel path by holding the welding head, reducing the workload of operators, while ensuring the stability of the welding travel path and improving the consistency of weld seam formation of complex sheet metal parts.

[0045] In this implementation, the two lateral force detection heads remain in contact with the workpiece surfaces on both sides of the weld seam as the sliding seat moves, collecting pressure data from both workpiece surfaces in real time. The welding control component calculates the pressure difference between the two lateral force detection heads to obtain the surface tracking deviation value, and senses the changes in the surface morphology of the workpiece on both sides of the weld seam in real time. The welding control component compares the calculated surface tracking deviation value with the preset surface tracking deviation value. When the surface tracking deviation value is greater than or equal to the preset surface tracking deviation value, the drive component is synchronously controlled to stop moving and the welding head stops welding. This allows for immediate termination of the operation when abnormal deformation occurs around the weld seam, preventing the welding head from continuing to operate under offset conditions and generating defective parts, reducing the welding defect rate of complex sheet metal parts, and reducing material waste.

[0046] In some implementations, the sliding seat 41 is provided with a detection head mounting hole 411, and a limit bolt 412 is provided at the opening of the detection head mounting hole 411.

[0047] In this implementation, the sliding seat 41 has a detection head mounting hole 411 corresponding to the installation position of each lateral force detection head 44. The lateral force detection head 44 can pass through the detection head mounting hole 411 and be installed on the sliding seat 41. A limiting bolt 412 is provided at the opening of the detection head mounting hole 411. The limiting bolt 412 can lock the position of the lateral force detection head 44 that extends into the detection head mounting hole 411.

[0048] For example, the detection head mounting hole 411 is opened on the sliding seat 41 in a direction perpendicular to the workpiece surface. The rod of the lateral force detection head 44 can move axially within the detection head mounting hole 411 to adjust the length extending out of the sliding seat 41 and adapt to different installation and detection requirements.

[0049] For example, the opening of the detection head mounting hole 411 is provided with a radially extending internal threaded hole, which is connected to the inner cavity of the detection head mounting hole 411. The limiting bolt 412 can be threaded into the internal threaded hole. When the limiting bolt 412 is tightened, the rod end of the limiting bolt 412 can abut against the outer wall of the rod of the lateral force detection head 44, locking the lateral force detection head 44 in the adjusted position.

[0050] In some implementations, the lateral force detection head 44 includes a support rod 441, a limiting block 442, a roller 443, a return spring 444, and a pressure sensor 445. The roller 443 is located at one end of the support rod 441 and is used to roll and connect with the workpiece surfaces on both sides of the weld seam. The limiting block 442 is located in the middle of the support rod 441, and the other end of the support rod 441 is located in the detection head mounting hole 411. The limiting bolt 412 limits the limiting block 442 to prevent the support rod 441 from coming out of the detection head mounting hole 411. The return spring 444 is located in the detection head mounting hole 411 and is used to support the support rod 441 to return to its original position. The pressure sensor 445 is located between the return spring 444 and the bottom of the detection head mounting hole 411. The pressure sensor 445 is used to detect the pressure between the roller 443 and the workpiece surfaces on both sides of the weld seam. The pressure sensor 445 is electrically connected to the welding control assembly 5.

[0051] In this implementation, the lateral force detection head 44 is composed of a support rod 441, a limiting block 442, a roller 443, a reset spring 444, and a pressure sensor 445. The roller 443 can be set at the end of the support rod 441 facing the workpiece. The roller 443 can roll along the workpiece surface on both sides of the weld seam to be welded, reducing the wear of the workpiece surface and the detection head caused by contact friction.

[0052] For example, the limiting block 442 can adopt an integral molding structure, with an annular protrusion directly machined on the outer side of the middle part of the support rod 441. The outer diameter of the annular protrusion is larger than the outer diameter of the support rod 441, forming a limiting blocking structure.

[0053] In this implementation, the limiting block 442 is located in the middle of the support rod 441. The other end of the support rod 441 away from the roller 443 can extend into the detection head mounting hole 411. The limiting bolt 412 can block and limit the limiting block 442 to prevent the support rod 441 from coming out of the detection head mounting hole 411 under the support of the return spring 444.

[0054] For example, the roller 443 is connected to the end of the support rod 441 by a pin. The end of the support rod 441 is machined with a U-shaped opening. After the roller 443 is placed into the U-shaped opening, the pin passes through the two side walls of the U-shaped opening and the inner ring of the bearing at the center of the roller 443, so that the roller 443 can rotate freely around the pin.

[0055] In this implementation, the reset spring 444 can be set in the internal cavity of the detection head mounting hole 411. The reset spring 444 can apply an outward elastic support force to the support rod 441, so that the roller 443 remains in contact with the workpiece surface. When the support rod 441 is squeezed and moves inward, the reset spring 444 can drive the support rod 441 to reset.

[0056] For example, the outer diameter of the support rod 441 is smaller than the inner diameter of the detection head mounting hole 411, and the support rod 441 can move freely along the axial direction of the detection head mounting hole 411. The outer diameter of the limiting block 442 is smaller than the inner diameter of the detection head mounting hole 411, so that the limiting block 442 can move axially within the detection head mounting hole 411.

[0057] In this implementation, the pressure sensor 445 can be set on the side of the return spring 444 away from the support rod 441, that is, between the bottom of the return spring 444 and the detection head mounting hole 411. The pressure sensor 445 can detect the pressure transmitted by the return spring 445 and indirectly obtain the contact pressure between the roller 443 and the workpiece surface. The pressure sensor 445 can establish an electrical connection with the welding control component 5 and transmit the detected pressure signal to the welding control component 5.

[0058] For example, after the limiting bolt 412 is screwed into the internal threaded hole on the side wall of the opening of the detection head mounting hole 411, the rod end of the limiting bolt 412 extends into the inside of the detection head mounting hole 411 and is located on the side of the limiting block 442 facing the roller 443. When the support rod 441 moves outward, the rod end of the limiting bolt 412 can prevent the limiting block 442 from continuing to move outward, thus completing the limiting of the limiting block 442.

[0059] In this implementation, after all components are installed together, they can maintain a detection state that elastically abuts against the surface of the workpiece, and the pressure sensor 445 can stably receive the pressure signal.

[0060] For example, a reset spring 444 is sleeved on one end of the support rod 441 that extends into the detection head mounting hole 411. One end of the reset spring 444 can abut against the end face of the support rod 441, and the other end can abut against the detection end face of the pressure sensor 445 to maintain an elastic support fit.

[0061] In this implementation, the pressure sensor 445 is mounted against the bottom of the detection head mounting hole 411. One end of the return spring 444 acts on the support rod 441, and the other end acts on the detection surface of the pressure sensor 445, thus fixing the position of each component.

[0062] For example, the housing of the pressure sensor 445 can be glued and fixed to the bottom end face of the detection head mounting hole 411. The detection end face of the pressure sensor 445 faces the reset spring 444, and the end of the reset spring 444 directly presses against the detection end face of the pressure sensor 445 to transmit pressure.

[0063] In this implementation, when the workpiece surface exerts a compressive force on the roller 443, the roller 443 can drive the support rod 441 to move towards the bottom of the detection head mounting hole 411. The support rod 441 compresses the return spring 444, and the return spring 444 transmits the compressive force to the pressure sensor 445 to complete the pressure detection. When the compressive force decreases, the return spring 444 can extend and rebound, driving the support rod 441 and the roller 443 to move outward, maintaining the contact between the roller 443 and the workpiece surface, and completing the reset action.

[0064] For example, when the sliding seat 41 moves offset toward the left workpiece surface, the left roller 443 is subjected to greater pressure from the workpiece surface. The roller 443 drives the support rod 441 to move toward the bottom of the detection head mounting hole 411, compressing the reset spring 444. The pressure sensor 445 detects the increase in pressure. When the sliding seat 41 returns to its corrected position, the pressure of the left workpiece on the roller 443 decreases. The reset spring 444 extends and pushes the support rod 441 outward, causing the roller 443 to return to its corrected position.

[0065] With this implementation, the roller of the lateral force detection head rolls into contact with the workpiece surface on both sides of the weld seam as the sliding seat moves. Compared with the sliding contact detection method, this greatly reduces frictional damage to the workpiece surface during the detection process. At the same time, the rolling resistance of the roller is smaller, which will not interfere with the normal movement of the sliding seat along the welding guide rail, ensuring the smoothness of the welding operation.

[0066] In this implementation, the return spring supports the support rod, ensuring that the roller remains in close contact with the workpiece surfaces on both sides of the weld seam. The pressure sensor obtains the pressure data between the roller and the workpiece surface by collecting the force on the return spring. The limit bolt limits the limit block to prevent the support rod from coming out of the detection head mounting hole, ensuring the accuracy and continuity of pressure detection, improving the installation stability of the lateral force detection head, and reducing the probability of failure. The support rod is inserted into the detection head mounting hole, and together with the limit bolt, the lateral force detection head can be detachably installed. When the roller or return spring is worn, the limit bolt can be unscrewed to quickly replace the lateral force detection head without replacing the entire sliding seat or welding assembly, reducing subsequent maintenance costs and shortening equipment downtime.

[0067] In some implementations, the support rod 441 includes a first support section 441a and a second support section 441b. A roller 443 is disposed on the first support section 441a, and a limiting block 442 is disposed on the second support section 441b. The first support section 441a has multiple positioning holes 441c along its length. The second support section 441b has a telescopic sleeve, through which a first positioning bolt 441d passes. The first positioning bolt 441d adjusts the positioning position of the multiple positioning holes 441c to adjust the support height of the first support section 441a on both sides of the weld seam of the workpiece surface of different shapes.

[0068] In this implementation, such as Figures 1 to 4 As shown, the support rod 441 is divided into two parts: a first support section 441a and a second support section 441b. A roller 443 is installed at the end of the first support section 441a away from the second support section 441b. A limiting block 442 is located on the outside of the second support section 441b. The first support section 441a can be extended and retracted relative to the second support section 441b to adjust its length and change the extension position of the roller 443, thus adapting to the inspection requirements of workpiece surfaces with different shapes.

[0069] For example, a plurality of positioning holes 441c are arranged at equal intervals along the length direction of the first support section 441a on the side of the first support section 441a, and the diameter of all positioning holes 441c is consistent.

[0070] In this implementation, multiple positioning holes 441c are opened on the side of the first support section 441a along its own length direction. A telescopic sleeve is provided on the second support section 441b, into which the first support section 441a extends. The first positioning bolt 441d passes through the telescopic sleeve. The first positioning bolt 441d can change the extension length of the first support section 441a by cooperating with different positioning holes 441c, thereby adjusting the support height of the first support section 441a on both sides of the weld seam on the workpiece surface.

[0071] For example, the telescopic sleeve and the second support section 441b are an integral structure. The telescopic sleeve is coaxially arranged at one end of the second support section 441b facing the first support section 441a. The inner diameter of the telescopic sleeve matches the outer diameter of the first support section 441a, which facilitates the extension and retraction of the first support section 441a.

[0072] In this implementation, the first support section 441a can extend into the internal cavity of the telescopic sleeve. The length of the overall support rod 441 can be adjusted by changing the length of the extension. The first positioning bolt 441d can lock the relative position of the first support section 441a and the telescopic sleeve.

[0073] For example, the first support segment 441a extends coaxially into the interior of the telescopic sleeve, and the inner wall of the telescopic sleeve fits against the outer wall of the first support segment 441a, restricting the first support segment 441a from swinging inside the telescopic sleeve and keeping the movement direction of the first support segment 441a stable along the axial direction.

[0074] In this implementation, the first positioning bolt 441d is inserted into the pre-set threaded hole of the telescopic sleeve. The first positioning bolt 441d can be inserted into different positioning holes 441c to lock the position of the first support section 441a.

[0075] For example, when adjusting the support height, first loosen the first positioning bolt 441d outwards so that the rod end of the first positioning bolt 441d exits the currently mating positioning hole 441c, thereby releasing the lock on the first support section 441a. After aligning the first positioning bolt 441d with the positioning hole 441c at the target position, tighten the first positioning bolt 441d inwards so that the rod end engages with the positioning hole 441c to complete the positioning.

[0076] In this implementation, the length of the first support section 441a extending out of the telescopic sleeve can be changed by altering the mating position of the first positioning bolt 441d and the positioning hole 441c, thereby adjusting the support height to suit different workpieces.

[0077] For example, when it is necessary to increase the extension length of the first support section 441a, loosen the first positioning bolt 441d and pull the first support section 441a outward of the telescopic sleeve by the corresponding length, so that the positioning hole 441c at the corresponding position is aligned with the first positioning bolt 441d, and tighten the first positioning bolt 441d to complete the positioning. When it is necessary to reduce the extension length, push the first support section 441a in the opposite direction and lock it.

[0078] It should be noted that in this implementation, by adjusting the mating position of the first positioning bolt 441d and the positioning hole 441c, the length of the first support section 441a extending out of the telescopic sleeve is changed, thereby adjusting the support height to adapt to different workpieces, and making... With this implementation, the first support section can be moved along the telescopic sleeve to adjust its extension length. The first positioning bolt is inserted into the corresponding positioning hole to complete the fixation. The support height of the lateral force detection head can be adjusted according to the height of the weld seam on the surface of workpieces with different shapes, adapting to the detection needs of more types of complex sheet metal parts and expanding the applicable scenarios of the equipment. After adjusting the extension length of the first support section, the first positioning bolt is locked in the positioning hole to complete the fixation. The adjustment process does not require additional disassembly of parts, making the operation simple and efficient. The return spring can still stably support the second support section to transmit pressure, without affecting the detection accuracy of the pressure sensor, ensuring the reliability of the detection data after height adjustment.

[0079] With this implementation, the support rod adopts a splicing structure of the first support section and the second support section. When the first support section or the roller is worn, only the first positioning bolt needs to be removed to replace the corresponding part, without having to replace the entire support rod, which further reduces the wear cost of parts and reduces the waste of spare parts.

[0080] In some implementations, the welding guide rail 2 has an I-shaped cross-section. The drive assembly 42 includes two sets of rollers 421 and a reduction drive unit 422. The two sets of rollers 421 are respectively rolled on both sides of the welding guide rail 2. The shafts of the two sets of rollers 421 are connected by a gear 423 to drive the two sets of rollers 421 to rotate in opposite directions. The shaft of one set of rollers 421 is driven to rotate by the reduction drive unit 422.

[0081] In this implementation, the cross-section of the welding guide rail 2 is set to I-shape to provide limiting guidance for the sliding of the sliding seat 41. The driving component 42 includes two sets of rollers 421 and a reduction drive unit 422. The two sets of rollers 421 can be respectively set at the two side edges of the welding guide rail 2 to form a rolling connection with the welding guide rail 2.

[0082] For example, the welded guide rail 2 with an I-shaped cross section includes three parts: an upper flange plate, a web plate, and a lower flange plate. The upper flange plate and the lower flange plate are arranged in parallel, and the web plate is vertically connected to the middle of the upper flange plate and the lower flange plate. The overall cross-sectional shape is I-shaped, and limiting edges are formed on both sides for the roller 421 to roll and connect.

[0083] In this implementation, the two sets of rollers 421 are connected by a gear 423. The gear 423 can make the two sets of rollers 421 rotate in opposite directions. The shaft of one set of rollers 421 can be driven to rotate by a speed reduction drive unit 422.

[0084] For example, the circumferential side of the roller 421 is provided with an annular groove that matches the thickness of the flange edge of the welding guide rail 2. The sidewall of the annular groove is in contact with the upper and lower surfaces of the flange of the welding guide rail 2. When the roller 421 rotates, it rolls along the flange edge of the welding guide rail 2 to maintain a stable fit and prevent disengagement.

[0085] In this implementation, two sets of rollers 421 are installed on the sliding seat 41 at the position corresponding to the welding guide rail 2, and respectively achieve rolling clamping engagement from both sides of the welding guide rail 2.

[0086] For example, the sliding seat 41 is sleeved on the welding guide rail 2. The sliding seat 41 has a first set of rollers 421 installed inside the upper flange position of the welding guide rail 2 and a second set of rollers 421 installed inside the lower flange position of the welding guide rail 2. Each set of rollers 421 includes two rollers 421 arranged along the length of the welding guide rail 2 to keep the rolling process smooth.

[0087] In this implementation, gears 423 are respectively installed at the ends of two sets of rollers 421 extending from the rotating shaft, and the two gears 423 mesh with each other to achieve transmission connection.

[0088] For example, a first gear is installed at the end of the shaft of the first set of rollers 421, and a second gear is installed at the end of the shaft of the second set of rollers 421. The first gear and the second gear mesh directly. When the first gear rotates, it drives the second gear to rotate in the opposite direction through the meshing of the tooth surfaces, thereby realizing the reverse rotation transmission of the two sets of rollers 421.

[0089] In this implementation, the speed reduction drive unit 422 is fixedly mounted on the sliding seat 41, and the output end of the speed reduction drive unit 422 is connected to the shaft of a corresponding set of rollers 421 to output power to the rollers 421.

[0090] For example, the reduction drive unit 422 adopts a servo motor with a reduction gearbox. The body of the servo motor is fixed to the side wall of the sliding seat 41 by bolts. The output shaft of the servo motor is coaxially connected to the shaft of a corresponding set of rollers 421 through a coupling, thereby driving the rollers 421 to rotate.

[0091] In this implementation, after the reduction drive unit 422 is started, it outputs rotational power, which drives a set of rollers 421 connected to it to rotate. The shaft of the set of rollers 421 drives the gear 423 installed at the end to rotate synchronously. The gear 423 meshes and drives the gear 423 at the end of the shaft of another set of rollers 421 to rotate. Since the two gears 423 mesh with each other, the other set of rollers 421 obtains rotational power in the opposite direction and rotates synchronously.

[0092] For example, the reduction drive unit 422 drives the upper set of rollers 421 to rotate clockwise, and the gear on the shaft of the upper roller 421 rotates clockwise, meshing with and driving the gear on the shaft of the lower roller 421 to rotate counterclockwise, and the lower roller 421 rotates counterclockwise accordingly, so as to realize the opposite synchronous rotation of the two sets of rollers 421.

[0093] In this implementation, two sets of counter-rotating rollers 421 clamp the two flange edges of the welding guide rail 2. When rotating, the rollers 421 and the flanges of the welding guide rail 2 generate friction. The friction causes the sliding seat 41 to move along the length of the welding guide rail 2, and the welding head 43 to move along the seam to be welded.

[0094] For example, when the two sets of rollers 421 rotate in opposite directions, static friction is generated between the inner wall of the annular groove of the roller 421 and the flange surface of the welding guide rail 2. The static friction pushes the sliding seat 41 to move along the length of the welding guide rail 2. When it is necessary to change the direction of movement, the deceleration drive unit 422 can rotate in the opposite direction to drive the sliding seat 41 to move in the opposite direction.

[0095] In this implementation, two sets of rollers are mounted on each side of the I-shaped welding guide rail. After the reduction drive unit drives one set of rollers to rotate, the two sets of rollers are driven to rotate in opposite directions through gear transmission. This makes the force more balanced when the sliding seat moves along the welding guide rail, avoids the offset and jamming caused by unilateral drive, improves the stability of the sliding seat movement, and ensures the accuracy of the welding head travel path.

[0096] With this implementation, two sets of rollers rotate in opposite directions to clamp the two sides of the I-shaped welding guide rail and move forward. The sliding seat will not wobble laterally, and the positional stability of the welding head is higher during the welding process. This effectively reduces the forming deviation of the weld and improves the welding quality of complex sheet metal parts.

[0097] In some implementations, the deceleration drive unit 422 is located in the first region of the slide seat 41, and the welding head 43 and two lateral force detection heads 44 are located in the second region of the slide seat 41. The first region and the second region are symmetrically distributed on the top of the slide seat 41 to improve the smoothness of the movement of the slide seat 41.

[0098] In this implementation, the deceleration drive unit 422 is installed in the first area divided by the sliding seat 41, and the welding head 43 and two lateral force detection heads 44 are installed in the second area divided by the sliding seat 41. The first and second areas are symmetrically distributed on the top of the sliding seat 41 to balance the weight distribution on the top of the sliding seat 41 and improve the smoothness of the sliding seat 41 moving along the welding guide rail 2.

[0099] For example, the servo motor body of the reduction drive unit 422 is fixed to the mounting boss in the first area of ​​the sliding seat 41 by bolts, the gearbox housing is set against the side wall of the sliding seat 41, and then positioned by positioning pins to ensure that the installation position of the reduction drive unit 422 does not deviate.

[0100] In this implementation, the welding head 43 and two lateral force detection heads 44 are arranged in the second region according to the detection requirements, maintaining the overall weight distribution and matching balance with the deceleration drive unit 422 in the first region.

[0101] For example, the welding head 44 is centrally located in the second region, and the two lateral force detection heads 44 are symmetrically distributed on both sides of the welding head 43 along the length of the welding guide rail 2. The overall weight of all components is similar to that of the deceleration drive unit 422 in the first region.

[0102] In this implementation, the first region and the second region are distributed on both sides of the central vertical line at the top of the sliding seat 41 as the axis of symmetry, forming a symmetrical layout structure.

[0103] For example, the top of the sliding seat 41 is a rectangular structure, with the vertical line along the length of the welding guide rail 2 serving as the axis of symmetry. The first region is distributed on the front side of the axis of symmetry, and the second region is distributed on the rear side of the axis of symmetry. The two regions have the same floor area, and the overall weight distribution is symmetrical.

[0104] In this implementation, the symmetrical layout can balance the center of gravity of the top of the slide seat 41, so that the overall center of gravity of the slide seat 41 falls on the central axis of the welding guide rail 2, avoiding the tilting and shaking of the slide seat 41 caused by the offset of the center of gravity, and improving the stability of the movement of the slide seat 41.

[0105] For example, when the deceleration drive unit 422 is located in the first region, and the welding head 43 and the lateral force detection head 44 are located in the symmetrical second region, the overall center of gravity of the sliding seat 41 is on the central axis of the web of the welding guide rail 2. During the sliding process, the sliding seat 41 will not tilt to one side, the roller 421 is subjected to uniform force, and the sliding seat 41 moves smoothly.

[0106] In this implementation, the deceleration drive unit is set in the first area of ​​the slide block, and the welding head and two lateral force detection heads are set in the second area of ​​the slide block. The two areas are symmetrically distributed on the top of the slide block, so that the overall center of gravity of the slide block is at the central axis position. During the movement, there will be no tilting with one side unbalanced, which further improves the stability of the slide block movement and avoids the welding head shaking.

[0107] This implementation method ensures that the symmetrical layout allows for uniform force distribution on both sides when the two sets of rollers move along the I-shaped welding guide rail, preventing excessive wear on one side of the rollers, extending their service life, and reducing the frequency of routine equipment maintenance. The symmetrical distribution of functional areas facilitates assembly and debugging. During operation, the second area containing the welding head and the lateral force detection head does not interfere with the first area on the drive side, making it convenient to observe the weld condition during welding operations and to perform subsequent maintenance on the deceleration drive unit.

[0108] In some implementations, the base 1 is provided with a T-shaped groove 11 and a second positioning bolt 12. The support assembly 3 includes a support seat 31, a support block 32 and a third positioning bolt 33. The support seat 31 is slidably disposed in the T-shaped groove 11. The second positioning bolt 12 is used to position the support seat 31 in the T-shaped groove 11. The support block 32 is provided with a long strip-shaped sliding groove 321. The third positioning bolt 33 passes through the support seat 31 and can slide along the sliding groove 321. The third positioning bolt 33 can slide along the sliding groove 321 to adjust the vertical height of the support block 32.

[0109] In this implementation, a T-shaped groove 11 is provided on the upper surface of the base 1, and a second positioning bolt 12 is also provided on the base 1. The support assembly 3 consists of a support seat 31, a support block 32 and a third positioning bolt 33. The support seat 31 can be slidably disposed inside the T-shaped groove 11, and the second positioning bolt 12 can lock the position of the support seat 31 after it has slid into place.

[0110] For example, a T-shaped protrusion that matches the T-shaped groove 11 is machined on the bottom of the support base 31. The T-shaped protrusion is inserted into the inner cavity of the T-shaped groove 11. The T-shaped groove 11 restricts the T-shaped protrusion from coming out upward. The support base 31 can slide and adjust its position along the length direction of the T-shaped groove 11.

[0111] In this implementation, the second positioning bolt 12 cooperates with the support seat 31 to complete the positioning and locking, ensuring that the support seat 31 does not shift after its position is adjusted.

[0112] For example, the support base 31 has a vertical through threaded hole, and the second positioning bolt 12 is threaded into the through threaded hole. When the second positioning bolt 12 is tightened, the bottom end of the second positioning bolt 12 abuts against the bottom of the T-shaped groove 11, and the position of the support base 31 is locked by friction.

[0113] In this implementation, the support block 32 has an elongated groove 321, and the third positioning bolt 33 passes through the support base 31. At the same time, the third positioning bolt 33 can slide along the groove 321 to adjust the vertical height of the support block 32 relative to the support base 31, so as to adapt to the height requirements of the welding guide rail 2.

[0114] For example, the groove 321 is arranged vertically on the side of the support block 32 facing the support base 31. The length direction of the groove 321 is consistent with the vertical direction. The width of the groove 321 matches the rod diameter of the third positioning bolt 33. The groove wall is smooth to facilitate the sliding of the third positioning bolt 33.

[0115] In this implementation, when adjusting the vertical height of the support block 32, first loosen the third positioning bolt 33 to release the lock on the support block 32, push the support block 32 to move vertically, and the third positioning bolt 33 slides relative to the support block 32 along the slide groove 321. After adjusting to the target height, tighten the third positioning bolt 33 to lock the vertical height of the support block 32.

[0116] For example, when it is necessary to increase the vertical height of the support block 32, push the support block 32 upward, and after the third positioning bolt 33 slides downward along the slide groove 321 into place, tighten the third positioning bolt 33 to press and fix the support block 32 on the support base 31, thus completing the height adjustment.

[0117] In this implementation, after the support block 32 is adjusted into place, the top can support the lower side wall of the welding guide rail 2, keeping the end of the welding guide rail 2 away from the base 1 stable.

[0118] For example, a support groove matching the lower flange of the welding guide rail 2 is machined on the top of the support block 32. The lower flange of the welding guide rail 2 is inserted into the support groove, and the inner wall of the support groove is attached to the outer wall of the lower flange, thus providing stable support for the welding guide rail 2.

[0119] It should be noted that the welding guide rail 2 can be bent and twisted in three-dimensional space, and can adapt to welds with different spatial structures. When welding welds with different bending and twisting structures is required, only the welding guide rail 2 needs to be replaced, and the lateral position and height of the support block 32 need to be adjusted to support the welding guide rail 2 at different heights. Welding of welds with different bending and twisting structures can be completed without replacing the welding component 4.

[0120] With this implementation, the support base can slide along the T-slot on the base to adjust its horizontal position. After adjustment, it is locked by the second positioning bolt. The support point can be flexibly adjusted according to the actual installation position of the welding guide rail, ensuring that the support force of the support component on the welding guide rail is more evenly distributed, avoiding sagging deformation in the middle of the welding guide rail, and improving the layout stability of the welding guide rail.

[0121] With this implementation, the third positioning bolt can slide along the long strip groove on the support block to adjust the vertical height of the support block, adapting to the support requirements of welding guide rails with different installation heights, ensuring that the top of the support block always fits against the bottom of the welding guide rail to provide stable support; the horizontal position and vertical height of the support component can be flexibly adjusted without the need for additional cutting, welding and modification of the base or support component, adapting to the support requirements of welding guide rails of different lengths and different mounting heights, expanding the adaptability of the equipment to welding scenarios of complex sheet metal parts of different sizes.

[0122] In some implementations, the bottom of the sliding seat 41 is provided with an opening 411, through which the support block 32 can pass. A first photoelectric sensor 412 for detecting the state of the support block 32 passing through the opening 411 is provided inside the opening 411. The first photoelectric sensor 412 is electrically connected to the welding control assembly 5.

[0123] In this implementation, the bottom of the sliding seat 41 has an opening 411, through which the support block 32 can pass. This allows the sliding seat 41 to move along the welding guide rail 2 past the position of the support block 32, thus preventing the support block 32 from blocking the movement of the sliding seat 41.

[0124] For example, the opening 411 is a rectangular through-hole that extends vertically through the bottom of the sliding seat 41. The size of the through-hole is larger than the cross-sectional size of the support block 32, leaving enough gap for the support block 32 to pass through without rubbing against the sliding seat 41.

[0125] In this implementation, the support block 32 passes vertically through the opening 411, and the top of the support block 32 supports the welding guide rail 2. When the sliding seat 41 moves, it can pass through the outside of the support block 32 without being blocked by the support block 32.

[0126] For example, the vertical height of the support block 32 is greater than the distance from the bottom of the sliding seat 41 to the top of the welding guide rail 2. After the support block 32 passes through the opening 411, the top still supports the lower side wall of the welding guide rail 2, without affecting the support function.

[0127] In this implementation, the first photoelectric sensor 412 is disposed on the inner sidewall of the opening 411. The first photoelectric sensor 412 can detect the position state of the support block 32. The first photoelectric sensor 412 establishes an electrical connection with the welding control component 5 and transmits the detection signal to the welding control component 5.

[0128] For example, the first photoelectric sensor 412 is fixed in the mounting groove of one of the inner sidewalls of the opening 411 by bolts. The detection probe of the first photoelectric sensor 412 faces the central area of ​​the opening 411 and does not protrude from the surface of the inner sidewall, so as to avoid being scratched and damaged by the support block 32.

[0129] In this implementation, the first photoelectric sensor 412 emits detection light. When the support block 32 enters the opening 411, it blocks the light emitted by the first photoelectric sensor 412. The first photoelectric sensor 412 outputs a corresponding status signal to the welding control component 5.

[0130] In some implementations, the welding control component 5 is also used to acquire a first time period from the start of welding to the time when the support block 32 passes through the opening 411. When the first time period is greater than or equal to a preset first time period, the welding control component 5 controls the drive component 42 to stop moving, controls the welding head 43 to stop welding, and issues a prompt message to inspect the welding component 4.

[0131] In this implementation, the welding control component 5 can acquire the first time interval from the start of welding until the support block 32 completely passes through the opening 411, and then compare the first time interval with a preset first time interval, outputting corresponding control commands based on the comparison result. When the first time interval is greater than or equal to the preset first time interval, the welding control component 5 controls the drive component 42 to stop moving the sliding seat 41, controls the welding head 43 to stop welding operations, and simultaneously issues a maintenance reminder to remind the operator to inspect the welding component 4.

[0132] For example, when the welding control component 5 receives the welding start command, it records the start timestamp of the internal timer. When the first photoelectric sensor 412 detects that the support block 32 has completely passed through the opening 411 and sends a signal, the welding control component 5 records the current end timestamp and subtracts the start timestamp from the end timestamp to calculate the duration of the first time period.

[0133] In this implementation, when the first time period is greater than or equal to the preset first time period, the welding control component 5 sends a stop control command to the drive component 42 and the welding head 43 respectively, cutting off the power output and welding energy output.

[0134] For example, the welding control component 5 first sends a low-level stop signal to the deceleration drive unit 422 of the drive component 42. After receiving the signal, the deceleration drive unit 422 cuts off the power output, and the roller 421 stops rotating. Then, the welding control component 5 sends a stop power supply command to the welding head 43, and the welding head 43 cuts off the welding power supply and stops outputting welding energy.

[0135] In this implementation, after the welding control component 5 outputs a stop command, it triggers a preset maintenance prompt information sending process to send a prompt information to the output module, reminding the operator to inspect and maintain the welding component 4.

[0136] For example, the welding control component 5 is electrically connected to the audible and visual alarm of the equipment. When the prompt message is triggered, the welding control component 5 sends a trigger signal to the audible and visual alarm, the audible and visual alarm lights up a red warning light and emits a buzzer prompt, and at the same time, the text prompt message "Welding component movement abnormal, please perform maintenance" pops up on the equipment's operation display screen.

[0137] With this implementation, the support block can pass through the opening during the movement of the sliding seat. After the first photoelectric sensor detects the state of the support block passing through, it transmits the signal to the welding control component, which can automatically identify whether the movement of the sliding seat has passed through the preset support point. There is no need for manual monitoring of the sliding seat's movement position, thus improving the accuracy of position recognition.

[0138] Through this implementation, the welding control component calculates the first time interval from the start of welding to the support block passing through the opening. By comparing the first time interval with a preset first time interval, it can promptly identify situations where the sliding seat's movement speed is abnormally slowed down or jammed, eliminating the need for manual inspection to determine the operating status and improving the efficiency of identifying abnormal working conditions. When the first time interval is greater than or equal to the preset first time interval, the welding control component synchronously controls the drive component to stop moving and the welding head to stop welding. At the same time, it issues a prompt message to inspect the welding component, which can promptly stop welding operations in a jammed state, avoid producing unqualified welds, and remind maintenance personnel to troubleshoot in a timely manner, shortening the fault handling time.

[0139] In some implementations, the welding guide rail 2 is provided with an end plug 21 at its end. The end plug 21 is provided with a second photoelectric sensor 21 for detecting the proximity of the sliding seat 41 and the end plug 21. The second photoelectric sensor 21 is electrically connected to the welding control assembly 5.

[0140] In this implementation, an end plug 21 is installed at the end of the welding guide rail 2 away from the base 1. The end plug 21 can mechanically limit the sliding seat 41 and prevent the sliding seat 41 from coming off the end of the welding guide rail 2. A second photoelectric sensor 21 is installed on the end plug 21. The second photoelectric sensor 21 can detect the proximity of the sliding seat 41 and the end plug 21. The second photoelectric sensor 21 is electrically connected to the welding control component 5 and can transmit the detection signal to the welding control component 5.

[0141] For example, the end plug 21 is fixed to the end face of the welding guide rail 2 by bolts. The outline dimension of the end plug 21 is larger than the I-shaped cross-sectional outline of the welding guide rail 2. The end plug 21 protrudes outward from the side wall of the welding guide rail 2 to form a mechanical limiting structure that can block the sliding seat 41.

[0142] In this implementation, the second photoelectric sensor 21 is installed on the side of the end plug 21 facing the slide seat 41, and the detection probe is facing the direction in which the slide seat 41 moves, so that the detection area covers the path of the slide seat 41.

[0143] For example, the end plug 21 has a mounting groove on the side facing the sliding seat 41, and the second photoelectric sensor 21 is embedded in the mounting groove and fixed by bolts. The detection probe of the second photoelectric sensor 21 does not protrude from the side of the end plug 21 to avoid being damaged by the sliding seat 41.

[0144] In this implementation, the second photoelectric sensor 21 continuously emits detection light in the direction in which the sliding seat 41 moves. When the sliding seat 41 moves close to the end plug 21, the sliding seat 41 blocks the detection light emitted by the second photoelectric sensor 21. The second photoelectric sensor 21 outputs a corresponding proximity status signal to the welding control component 5. The welding control component 5 recognizes that the sliding seat 41 has approached the end of the welding guide rail 2.

[0145] For example, after the sliding seat 41 completes the welding of the entire weld seam, it moves to the end. When the sliding seat 41 moves to a set distance from the end plug 21, the detection light of the second photoelectric sensor 21 is blocked by the sliding seat 41, and the second photoelectric sensor 21 sends a position signal to the welding control component 5.

[0146] In some implementations, the welding control component 5 is also used to acquire a second time period from the start of welding to the time when the sliding seat 41 approaches the end plug 21. When the second time period is greater than or equal to a preset second time period, the welding control component 5 controls the drive component 42 to stop moving, controls the welding head 43 to stop welding, and issues a prompt message to inspect the welding component 4.

[0147] In this implementation, the welding control component 5 can obtain the second time period from the start of welding to the time when the sliding seat 41 approaches the end plug 21. The second time period is compared with the preset second time period stored in the pre-stored database. When the second time period is greater than or equal to the preset second time period, the welding control component 5 controls the drive component 42 to stop moving the sliding seat 41, controls the welding head 43 to stop welding, and issues a prompt message to inspect the welding component 4.

[0148] For example, when the welding control component 5 receives the welding start command, it records the current timestamp of the internal system timer as the start time. When the second photoelectric sensor 21 detects that the sliding seat 41 is close to the end plug 21 and sends a detection signal, the welding control component 5 records the current timestamp as the end time, subtracts the start timestamp from the end timestamp, and calculates the duration of the second time period.

[0149] In this implementation, after confirming that the second time period meets the triggering conditions, the welding control component 5 sends a stop control command to the drive component 42 and the welding head 43 respectively, terminating the current welding movement operation.

[0150] For example, the welding control component 5 first sends a stop driving level signal to the deceleration drive unit 422 of the drive component 42. The deceleration drive unit 422 cuts off the power output, the roller 421 stops rotating, and the sliding seat 41 stops moving. Then, the welding control component 5 sends a power-off command to the welding head 43. The welding head 43 cuts off the welding power supply and stops outputting welding energy.

[0151] In this implementation, after the stop command is output, the welding control component 5 triggers the preset maintenance prompt process and sends maintenance prompt information through the external prompt output device to remind the operator to perform maintenance on the welding component 4.

[0152] For example, the welding control component 5 is electrically connected to the touch screen of the equipment. When a prompt is triggered, the welding control component 5 sends a prompt command to the touch screen, and the touch screen displays a pop-up window showing the text message "The time taken for the entire movement of the welding component is abnormal, please check it". At the same time, the external sound and light alarm of the equipment is triggered to activate and issue a sound and light warning to remind the operator.

[0153] With this implementation, the second photoelectric sensor on the end plug at the end of the welding guide rail detects the proximity of the sliding seat and the end plug in real time. The signal is transmitted to the welding control component, which can automatically identify whether the sliding seat has moved to the end of the welding guide rail. There is no need for manual supervision to determine whether the welding stroke is completed, thus reducing the cost of manual monitoring.

[0154] Through this implementation, the welding control component calculates the second time period from the start of welding to the sliding seat approaching the end plug. By comparing this second time period with a preset second time period, it can identify whether there is an overall deceleration or jamming in the movement of the sliding seat from the perspective of the entire stroke, which supplements the shortcomings of single-point detection and improves the comprehensiveness of abnormal operation identification. When the second time period is greater than or equal to the preset second time period, the welding control component simultaneously stops the operation of the drive component and the welding head and issues a maintenance prompt. This can promptly detect hidden faults such as insufficient power and guide rail wear throughout the entire stroke, avoid continuous operation of faults that aggravate equipment wear, and extend the service life of the equipment.

[0155] In some implementations, the welding control component 5 is also used to determine the difference between the second time period and the first time period as the third time period. When the third time period is greater than or equal to the preset third time period, the welding control component 5 controls the drive component 42 to stop moving, controls the welding head 43 to stop welding, and issues a prompt message to inspect the welding component 4.

[0156] In this implementation, the welding control component 5 can extract the calculated first time period and second time period, calculate the difference between the second time period and the first time period, use the difference as the third time period, and then compare the third time period with the preset third time period. When the third time period is greater than or equal to the preset third time period, the welding control component 5 controls the drive component 42 to stop moving, controls the welding head 43 to stop welding, and issues a prompt message to inspect the welding component 4.

[0157] In this implementation, after confirming that the third time period is greater than or equal to the preset third time period, the welding control component 5 sends a stop control command to the drive component 42 and the welding head 43 respectively to terminate the current welding operation.

[0158] For example, the welding control component 5 first sends a stop driving control signal to the deceleration drive unit 422 of the drive component 42. After receiving the signal, the deceleration drive unit 422 cuts off the power output, the roller 421 stops rotating, and the sliding seat 41 stops moving along the welding guide rail 2. Then, the welding control component 5 sends a stop welding control signal to the welding head 43, cuts off the welding power supply to the welding head 43, and the welding head 43 stops outputting welding energy.

[0159] In this implementation, after a stop command is sent, the welding control component 5 triggers a preset maintenance prompt process and sends maintenance prompt information through an external prompting device to remind the operator to perform maintenance on the welding component 4.

[0160] Through this implementation, the welding control component uses the difference between the second time period and the first time period as the third time period, which can obtain the travel time of the sliding seat between two adjacent detection points. This enables the monitoring of the operating status of each segment of the welding guide rail, filling the blind spots of single-point and full-stroke detection, and further improving the accuracy of anomaly identification.

[0161] By comparing the third time period with the preset third time period, the abnormal movement speed of the sliding seat in the welding guide rail section can be accurately located. This allows maintenance personnel to quickly find the fault location without having to check the welding guide rail section by section, greatly improving the efficiency of fault diagnosis and shortening equipment downtime for maintenance. When the third time period is greater than or equal to the preset third time period, the welding control component stops operation simultaneously and issues a maintenance prompt. This can promptly detect local faults such as local wear or foreign object jamming in the welding guide rail, preventing local faults from continuously damaging the rollers or welding guide rail. At the same time, it reduces the number of defective welds generated within the abnormal stroke section, reducing material loss.

[0162] Figure 5 This is a schematic flowchart of an argon arc welding method provided in an embodiment of this application, as shown below. Figure 5 As shown in the embodiment of this application, an argon arc welding method is also provided, which uses the argon arc welding equipment for complex sheet metal parts described in any of the above claims. The method further includes steps S110 to S120, which are described in detail below.

[0163] S110. Start welding assembly 4 and move along welding guide rail 2 to begin welding. The pressure of the lateral force detection head 44 and the workpiece surface on both sides of the weld seam is detected by two lateral force detection heads 44.

[0164] In this implementation, after receiving the welding start command, the welding assembly 4 is started to move along the welding guide rail 2 and the welding operation begins simultaneously. During the welding process, two lateral force detection heads 44 operate synchronously to detect the contact pressure between the lateral force detection heads 44 and the workpiece surfaces on both sides of the weld seam, providing data support for subsequent offset judgment.

[0165] For example, after the operator presses the start button of the equipment, the welding control component 5 receives the start signal and sends a start operation command to the drive component 42. After receiving the command, the reduction drive unit 422 of the drive component 42 starts to output power, which drives the corresponding set of rollers 421 to rotate. The rollers 421 drive another set of rollers 421 to rotate in the opposite direction through the gear 423. The two sets of rollers 421 roll along the welding guide rail 2, which drives the sliding seat 41 to move along the welding guide rail 2 towards the end.

[0166] In this implementation, during the welding process, the sliding seat 41 moves along the welding guide rail 2, and the two lateral force detection heads 44 move synchronously with the sliding seat 41 to continuously collect the contact pressure of themselves and the workpiece surfaces on both sides of the weld seam, and transmit the pressure signal to the welding control component 5 in real time.

[0167] For example, when the sliding seat 41 moves, the rollers 443 of the two lateral force detection heads 44 roll along the workpiece surfaces on both sides of the weld seam. The rollers 443 are squeezed by the workpiece surface, which drives the support rod 441 to compress the return spring 444. The return spring 444 transmits the pressure to the pressure sensor 445. The pressure sensor 445 converts the real-time pressure into an electrical signal at a fixed sampling frequency and continuously sends it to the welding control component 5 to complete the real-time acquisition of pressure.

[0168] S120, the welding control component 5 determines the pressure difference detected by the two lateral force detection heads 44 as the surface tracking deviation value. When the surface tracking deviation value is greater than or equal to the preset surface tracking deviation value, the welding control component 5 controls the drive component 42 to stop moving and controls the welding head 43 to stop welding.

[0169] In this implementation, after receiving the real-time pressure signals sent by the two lateral force detection heads 44, the welding control component 5 calculates the difference between the two detection pressures and uses this difference as the surface tracking deviation value. When the surface tracking deviation value is greater than or equal to the preset surface tracking deviation value, the welding control component 5 controls the drive component 42 to stop moving the sliding seat 41 and simultaneously controls the welding head 43 to stop welding operations.

[0170] In this implementation, after the welding control component 5 acquires two synchronous pressure data, it takes the absolute value of the difference between the two data and obtains the surface tracking deviation value.

[0171] For example, the welding control component 5 reads the pressure value of the left lateral force detection head 44 as 10N and the pressure value of the right lateral force detection head 44 as 2N. The difference between 10N and 2N is 8N. The absolute value is then taken to obtain the surface tracking deviation value of 8N, thus completing the calculation of the surface tracking deviation value.

[0172] In this implementation, after confirming that the surface tracking deviation value is greater than or equal to the preset surface tracking deviation value, the welding control component 5 synchronously sends a stop movement command to the drive component 42 and a stop welding command to the welding head 43, thereby terminating the movement and welding operations.

[0173] For example, the welding control component 5 simultaneously sends a stop level signal to the deceleration drive unit 422 of the drive component 42 and a power-off command to the power supply module of the welding head 43 through different signal output ports. After receiving the signal, the deceleration drive unit 422 immediately cuts off the power output, and after receiving the command, the power supply module of the welding head 43 immediately cuts off the welding power supply, thus synchronously completing the actions of stopping movement and stopping welding.

[0174] With this implementation, after welding is started, the welding assembly moves along the welding guide rail. Two lateral force detection heads collect pressure data on the surfaces of the workpieces on both sides of the weld seam in real time. During the welding process, the changes in the shape of the workpieces on both sides of the weld seam can be monitored simultaneously. There is no need to add an extra detection process, which improves the integration of welding operations and simplifies the welding process for complex sheet metal parts.

[0175] This implementation method calculates the pressure difference between two lateral force detection heads to obtain the surface tracking deviation value. By comparing the surface tracking deviation value with the preset surface tracking deviation value, abnormalities such as deformation and positional displacement around the weld seam can be automatically identified. This eliminates the need for manual monitoring of the weld seam in real time, reducing the workload of operators and improving the timeliness of abnormality identification. When the surface tracking deviation value is greater than or equal to the preset surface tracking deviation value, the drive component movement and welding head welding are stopped simultaneously. This allows for immediate termination of the operation when abnormal weld seam conditions occur, avoiding defective parts generated during welding under abnormal conditions, reducing the welding defect rate of complex sheet metal parts, and minimizing material waste.

[0176] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An argon arc welding apparatus for complex sheet metal parts, characterized by, The assembly includes a base, a welding guide rail, a support assembly, a welding assembly, and a welding control assembly. One end of the welding guide rail is connected to the base, and the support assembly is located on the base, with its top supporting the welding guide rail. The welding assembly includes a sliding seat, a drive assembly, a welding head, and two lateral force detection heads. The sliding seat is slidably connected to the welding guide rail. The drive assembly is located on the sliding seat and is used to drive the sliding seat to move along the welding guide rail. The welding guide rail is used to guide the sliding seat to move along the seam to be welded. The welding head is located on the sliding seat and is used to weld the seam to be welded. The two lateral force detection heads are located on both sides of the welding head on the sliding seat, and their ends abut against the workpiece surfaces on both sides of the seam to be welded. Two lateral force detection heads are used to detect the pressure on the workpiece surface on both sides of the weld seam. The welding head, drive assembly, and welding control assembly are electrically connected. The welding control assembly is used to determine the difference in pressure detected by the two lateral force detection heads as the surface tracking deviation value. When the surface tracking deviation value is greater than or equal to the preset surface tracking deviation value, the welding control assembly controls the drive assembly to stop moving and controls the welding head to stop welding.

2. The apparatus for argon arc welding of complex sheet metal parts according to claim 1, characterized in that, The sliding seat is provided with a detection head mounting hole, and a limit bolt is provided at the opening of the detection head mounting hole; The lateral force detection head includes a support rod, a limiting block, a roller, a return spring, and a pressure sensor. The roller is located at one end of the support rod and is used to roll and connect with the workpiece surfaces on both sides of the weld seam. The limiting block is located in the middle of the support rod, and the other end of the support rod is located in the detection head mounting hole. The limiting bolt limits the limiting block to prevent the support rod from coming out of the detection head mounting hole. The return spring is located in the detection head mounting hole and is used to push the support rod back to its original position. The pressure sensor is located between the return spring and the bottom of the detection head mounting hole. The pressure sensor is used to detect the pressure between the roller and the workpiece surfaces on both sides of the weld seam. The pressure sensor is electrically connected to the welding control assembly.

3. The apparatus for argon arc welding of complex sheet metal parts according to claim 2, characterized in that, The support rod includes a first support section and a second support section. Rollers are provided on the first support section, and limiting blocks are provided on the second support section. Multiple positioning holes are provided on the first support section along its length. A telescopic sleeve is provided on the second support section. A first positioning bolt passes through the telescopic sleeve. The first positioning bolt adjusts the positioning position of the multiple positioning holes to adjust the support height of the first support section on both sides of the weld seam on the surface of workpieces of different shapes.

4. The apparatus for argon arc welding of complex sheet metal parts according to claim 3, characterized in that, The welding guide rail has an I-shaped cross section. The drive assembly includes two sets of rollers and a reduction drive unit. The two sets of rollers are respectively rolled and connected to the two sides of the welding guide rail. The shafts of the two sets of rollers are connected by gear transmission to drive the two sets of rollers to rotate in opposite directions. The shaft of one set of rollers is driven to rotate by the reduction drive unit.

5. The apparatus for argon arc welding of complex sheet metal parts according to claim 4, characterized in that, The deceleration drive unit is located in the first area of ​​the slide block, and the welding head and two lateral force detection heads are located in the second area of ​​the slide block. The first and second areas are symmetrically distributed on the top of the slide block to improve the smoothness of the slide block's movement.

6. The apparatus for argon arc welding of complex sheet metal parts according to claim 5, characterized in that, The base is provided with a T-shaped groove and a second positioning bolt. The support assembly includes a support seat, a support block and a third positioning bolt. The support seat is slidably disposed in the T-shaped groove. The second positioning bolt is used to position the support seat in the T-shaped groove. The support block is provided with a long strip-shaped sliding groove. The third positioning bolt passes through the support seat and can slide along the sliding groove. The third positioning bolt can slide along the sliding groove to adjust the vertical height of the support block.

7. The apparatus for argon arc welding of complex sheet metal parts according to claim 6, characterized in that, The bottom of the sliding seat is provided with an opening that allows the support block to pass through. A first photoelectric sensor is provided inside the opening to detect the state of the support block passing through the opening. The first photoelectric sensor is electrically connected to the welding control assembly. The welding control component is also used to acquire the first time period from the start of welding to the support block passing through the opening. When the first time period is greater than or equal to the preset first time period, the welding control component controls the drive component to stop moving, controls the welding head to stop welding, and issues a prompt message to inspect the welding component.

8. The apparatus for argon arc welding of complex sheet metal parts according to claim 7, characterized in that, The welding guide rail is provided with an end plug at the end, and a second photoelectric sensor is provided on the end plug to detect the proximity of the sliding seat and the end plug. The second photoelectric sensor is electrically connected to the welding control assembly. The welding control component is also used to acquire a second time period from the start of welding to when the sliding seat approaches the end plug. When the second time period is greater than or equal to a preset second time period, the welding control component controls the drive component to stop moving, controls the welding head to stop welding, and issues a prompt message to inspect the welding component.

9. The apparatus for argon arc welding of complex sheet metal parts according to claim 8, characterized in that, The welding control component is also used to determine the difference between the second time period and the first time period as the third time period. When the third time period is greater than or equal to the preset third time period, the welding control component controls the drive component to stop moving, controls the welding head to stop welding, and issues a prompt message to inspect the welding component.

10. An argon arc welding method characterized by, The method, employing the argon arc welding equipment for complex sheet metal parts as described in any one of claims 1 to 9, comprises: The welding assembly is started and moves along the welding guide to begin welding. Two lateral force detection heads are used to detect the pressure on the workpiece surfaces on both sides of the weld seam. The welding control component determines the difference in pressure detected by the two lateral force detection heads as the surface tracking deviation value; when the surface tracking deviation value is greater than or equal to the preset surface tracking deviation value, the welding control component controls the drive component to stop moving and controls the welding head to stop welding.

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