Welding device for new energy automobile radiator fin machining

Abstract

The invention discloses a welding device for new energy automobile radiator fin machining, which is applied to the field of welding devices and comprises a mechanical arm, a comprehensive seat driven by a rotating motor and a top circular truncated cone, and a welding arm, a detection arm and a reinspection arm which surround a clamping plug are integrated on the circular truncated cone. Multi-arm cooperative or independent angle adjustment is achieved through rack-gear ring meshing transmission and an electric plug pin capable of achieving rack connection and disconnection, diversified machining requirements are met, a clamping plug is provided with a conical plug and a top end detection probe, a circular truncated cone and a heat exchanger pipe are coaxially aligned in the auxiliary welding process, accurate positioning of the welding end and the detection end is guaranteed, and the welding efficiency is improved. The welding arm is provided with a welding gun body and a gas tank, the detection arm carries a non-contact detection unit, and the reinspection arm is provided with a contact type detection unit, so that multi-arm integration, accurate positioning and closed-loop detection are achieved, the welding efficiency and quality are effectively improved, the welding and synchronous detection requirements of heat exchanger pipes in different shapes are met, and the flexibility of the device is improved.

Description

Technical Field

[0001] This invention relates to the field of welding equipment, and in particular to a welding equipment for processing radiator fins of new energy vehicles. Background Technology

[0002] Existing welding equipment for processing radiator fins in new energy vehicles possesses basic welding functions. It can effectively connect fins to related radiator components, ensuring welding stability. Some equipment employs automated control, allowing for precise setting of welding parameters and improving welding efficiency and quality. However, some equipment lacks flexibility when dealing with complex fin shapes and has room for improvement in heat dissipation performance optimization, requiring further improvements to better meet the diverse processing needs of radiator fins in new energy vehicles.

[0003] Chinese invention CN117300499B discloses a heat exchanger welding device. This device uses multiple clamping rods to clamp the heat exchanger plates together. By utilizing the arrangement of multiple plates on the heat exchanger and the clamping rods, the stability of the heat exchanger is increased. The gears and toothed joints mesh to pull the fixing ring. During the pulling process, the inner ring of the fixing ring tightens, which in turn squeezes the clamping rods, thus fixing the heat exchanger. By using the distributed arrangement of the clamping rods, heat exchangers of different sizes can be fixed.

[0004] Chinese invention CN114029648B discloses a heat exchanger tube head welding device. The guide wheel of this invention is set on the inner side of the I-shaped ring, which is beneficial to allow the U-shaped plate to rotate flexibly from the outside of the I-shaped ring during use, thereby enabling flexible adjustment of the position of the welding device.

[0005] Existing welding devices lack flexibility when automatically welding heat exchanger tubes of different shapes, making it inconvenient to perform synchronous adaptive testing of the weld during welding, and the accuracy of welding quality testing is low. Summary of the Invention

[0006] 1. Technical problems to be solved

[0007] The core of this invention lies in solving the problems of insufficient flexibility and low quality detection accuracy in welding complex fins in the prior art through multi-arm integrated collaborative control, precise positioning calibration, and closed-loop detection of welding quality. At the same time, the detection probe at the top of the plug helps to align the plug with the heat exchanger tube coaxially, ensuring that the welding and detection ends are accurately aligned with the weld.

[0008] 2. Technical Solution

[0009] To solve the above problems, the present invention adopts the following technical solution.

[0010] A welding device for processing radiator fins of new energy vehicles includes a robotic arm, a rotary motor connected to the movable end of the robotic arm, a rotatable base connected to the power output end of the rotary motor, a frustum connected to the top of the frustum, and a detachable plug connected to the top of the frustum; a welding arm, a testing arm, and a re-inspection arm are arranged around the plug on the frustum.

[0011] The welding arm includes a welding torch body, an auxiliary box connected to the side of the assembly seat, an air tank that matches the welding torch body can be detachably installed in the auxiliary box, and a main gear ring that is rotatably connected to the welding torch body is fixedly connected to the welding torch body.

[0012] The detection arm includes a main support, and a non-contact detection unit is rotatably connected to the detection end of the main support. An infrared temperature sensor and an image acquisition device are connected to the non-contact detection unit.

[0013] The re-inspection arm includes a secondary support, on which an electric push rod is mounted. A contact detection unit is mounted on the movable end of the electric push rod. Both the main support and the secondary support are connected to a secondary toothed ring at the end near the integrated base.

[0014] The truncated cone has three racks that mesh with the main gear ring and two auxiliary gear rings respectively. The integrated seat is equipped with an electric extension rod for driving the racks to reciprocate. The power output end of the electric extension rod is connected to three extension beams, and an electric pin is fixedly connected to the extension beam for engaging with the bottom locking hole of the rack.

[0015] Furthermore, the plug includes a retaining post, on which a conical plug for inserting the heat exchange fin tube is detachably connected, and a pressure sensor is connected between the conical plug and the retaining post.

[0016] Optionally, a detection probe is connected to the top of the conical plug, and a pair of laser sensors are fixedly connected to the detection probe; a buffer sleeve is laid on the top of the clamping post, and pressure sensors are evenly arranged on the buffer sleeve.

[0017] Furthermore, a servo motor is installed on the re-inspection arm to drive the rotation of the contact detection unit. The contact detection unit is rotatably connected to the top of the movable end of the electric push rod through a rotating shaft. The top of the movable end of the electric push rod is provided with a receiving groove that matches the contact detection unit. A transmission belt is connected between the power output end of the servo motor and the rotating shaft.

[0018] Optionally, an air outlet fixed on a circular platform is provided between the inspection arm and the re-inspection arm and the welding arm, and an air duct matching the air outlet is opened in the integrated base, and a fan for inputting airflow into the air duct is installed in the auxiliary box.

[0019] Optionally, a marking nozzle is installed in the middle of the movable end of the electric push rod, and an ink tank for supplying ink to the marking nozzle is detachably installed on the inspection arm 7.

[0020] Furthermore, a data cable connects the welding arm to the auxiliary box, and cables connected to the data cable on the welding arm are laid inside the truncated cone. Both the inspection arm and the re-inspection arm are connected to the data cable signal via cables.

[0021] Furthermore, a damping groove matching the rack is provided on the circular platform. A movable groove is provided at the bottom of the damping groove. A magnetic pin matching the locking hole on the rack is slidably connected in the movable groove. An electromagnet matching the magnetic pin is fixedly connected to the movable end of the electric pin. When the rack is at the bottom of the damping groove, it can switch between disconnecting and connecting with the electric pin.

[0022] 3. Beneficial Effects

[0023] Compared with the prior art, the advantages of this invention are:

[0024] (1) This scheme is equipped with a welding arm, an inspection arm and a re-inspection arm. The multi-arm coordinated or independent angle adjustment is achieved through rack-and-gear meshing transmission. The electric extension rod in the integrated seat drives the extension beam. The electric pin on the extension beam is engaged with the damped sliding rack in the truncated cone. The rack meshes with the main gear ring of the welding arm and the auxiliary gear rings of the inspection arm and the re-inspection arm respectively. The rotation angle of the three arms can be controlled synchronously or independently to adapt to the welding and synchronous or independent inspection needs of heat exchanger tubes of different shapes and improve the flexibility of the device.

[0025] (2) This scheme can be equipped with a plug with a detection probe. After the plug is inserted into the heat exchanger tube, the pressure sensor triggers the laser to detect the inner diameter of the pipe. Combined with the adjustment of the integrated seat displacement of the robotic arm, the plug and the heat exchanger tube are aligned coaxially to ensure that the welding and detection ends are accurately aligned with the weld. Attached Figure Description

[0026] Figure 1 This is a perspective view of the present invention;

[0027] Figure 2 for Figure 1 Schematic diagram of the structure at point A;

[0028] Figure 3 This is a top cross-sectional view of the welding process during the present invention.

[0029] Figure 4 for Figure 3 Schematic diagram of the structure at point B;

[0030] Figure 5 for Figure 3 Schematic diagram of the structure at point C;

[0031] Figure 6 This is a side view of the welding process according to the present invention;

[0032] Figure 7 This is a cross-sectional view of the frustum of the present invention;

[0033] Figure 8 The front view of the frustum of the present invention with an air outlet.

[0034] Explanation of the labels in the diagram:

[0035] 1. Robotic arm; 2. Rotary motor; 3. Integrated base; 31. Frustum; 311. Magnetic pin; 32. Electric extension rod; 321. Extension beam; 322. Electric pin; 33. Rack; 34. Air outlet; 4. Plug; 41. Plug post; 42. Conical plug; 43. Detection probe; 5. Welding arm; 51. Welding torch body; 52. Main gear ring; 6. Detection arm; 61. Main support; 62. Non-contact detection unit; 7. Re-inspection arm; 71. Sub-support; 72. Contact detection unit; 73. Servo motor; 8. Auxiliary box. Detailed Implementation

[0036] The technical solutions will now be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention.

[0037] Example 1:

[0038] Please see Figures 1-7 A welding device for processing radiator fins of new energy vehicles includes a robotic arm 1. The movable end of the robotic arm 1 is connected to a support, and the top of the support is connected to a rotary motor 2. The power output end of the rotary motor 2 is rotatably connected to a composite base 3. The top of the composite base 3 is connected to a frustum 31, and a stopper 4 is detachably connected to the top of the frustum 31. A welding arm 5, a detection arm 6, and a re-inspection arm 7 are arranged around the stopper 4 on the frustum 31.

[0039] The stopper 4 includes a stopper 41, on which a conical plug 42 for inserting heat exchanger tubes is detachably connected. A pressure sensor is connected between the conical plug 42 and the stopper 41. The pressure sensor is used to detect whether the heat exchanger tubes are in contact with the stopper 4.

[0040] The welding arm 5 includes a welding torch body 51, and an auxiliary box 8 is connected to the side of the integrated seat 3. An air tank that matches the welding torch body 51 is detachably installed in the auxiliary box 8. A main gear ring 52 that is rotatably connected to the frustum 31 is fixedly connected to the welding torch body 51.

[0041] The detection arm 6 includes a main support 61, and a non-contact detection unit 62 is rotatably connected to the detection end of the main support 61. An infrared temperature sensor and an image acquisition device are connected to the non-contact detection unit 62.

[0042] The re-inspection arm 7 includes a secondary support 71, on which an electric push rod is mounted. A contact detection unit 72 is mounted on the movable end of the electric push rod. A contact temperature sensor is connected to the contact detection unit 72. A secondary toothed ring is connected to the end of the main support 61 and the secondary support 71 near the integrated base 3.

[0043] The truncated cone 31 has three racks 33 that mesh with the main gear ring 52 and two auxiliary gear rings respectively. The truncated cone 31 has damping grooves that match the racks 33. The auxiliary gear rings and the main gear ring 52 are rotatably connected to one of the damping grooves. Those skilled in the art can install dust covers at the openings of the damping grooves for protection (not shown in the figure). Those skilled in the art can select dust covers of suitable shape in the prior art that do not affect the movement of the welding arm 5, the detection arm 6 and the re-inspection arm 7 for installation.

[0044] The integrated base 3 is equipped with an electric extension rod 32 for driving the rack 33 to reciprocate; the power output end of the electric extension rod 32 is connected to three extension beams 321, and an electric pin 322 for engaging with the bottom locking hole of the rack 33 is fixedly connected to the extension beams 321. When the movable end of the electric pin 322 retracts to separate from the locking hole at the bottom of the rack 33, the rack 33 no longer moves with the electric extension rod 32.

[0045] The truncated cone 31 has a damping groove that matches the rack 33. The bottom end of the damping groove has a movable groove. A magnetic pin 311 that matches the locking hole on the rack 33 is slidably connected in the movable groove. An electromagnet that matches the magnetic pin 311 is fixedly connected to the movable end of the electric pin 322. When the rack 33 is at the bottom of the damping groove, it can switch between disconnecting and connecting with the electric pin 322.

[0046] When adjusting the connection or disconnection of rack 33, first control the electric extension rod 32 to move the extension beam 321 to the bottom of the damping groove. At this time, the telescopic end of the electric pin 322 is opposite to the position of the magnetic pin 311. Then control the electric pin 322 to retract and open the electromagnet on it to attract the magnetic pin 311. During the process of the movable end of the electric pin 322 being pulled out of the locking hole, the magnetic pin 311 is inserted into the locking hole. After the movable end of the electric pin 322 is separated from the rack 33, the rack 33 is fixed.

[0047] When the electric pin 322 is adjusted to be connected to the rack 33, the extension beam 321 moves to the bottom of the damping groove, the movable end of the electric pin 322 extends, and then pushes the magnetic pin 311 back into the movable groove, so that the magnetic pin 311 is separated from the rack 33, and the movable end of the electric pin 322 is fixed to the rack 33. At this time, the rack 33 moves with the electric extension rod 32.

[0048] The electric pin 322 can be used to disconnect or connect the rack, enabling independent control of the welding arm 5, the inspection arm 6, and the re-inspection arm 7, so that one or more combinations of the welding arm 5, the inspection arm 6, and the re-inspection arm 7 can be adjusted to work simultaneously as needed.

[0049] This solution adjusts the rotation angles of the welding arm 5, the detection arm 6, and the re-inspection arm 7 by driving the rack 33 to move. The re-inspection arm 7 is used to re-inspect the marked points where the detection arm 6 detected abnormal temperatures. During the re-inspection, the re-inspection arm 7 moves close to the marked point to perform area detection. If the abnormality is still detected, an alarm is triggered.

[0050] When this solution is working, the rotating motor 2 drives the integrated seat 3 to rotate. During the rotation, welding is performed by the welding arm 5. During the rotation, the weld is inspected by the detection arm 6. Temperature anomalies are recorded during the inspection. When the re-inspection arm 7 matches the temperature anomaly, the re-inspection arm 7 extends to perform contact inspection on the weld.

[0051] The re-inspection arm 7 is equipped with a servo motor 73 for driving the contact detection unit 72 to rotate. The contact detection unit 72 is rotatably connected to the top of the movable end of the electric push rod through a rotating shaft. The top of the movable end of the electric push rod is provided with a receiving groove that matches the contact detection unit 72. A transmission belt is connected between the power output end of the servo motor 73 and the rotating shaft. The contact detection unit 72 can rotate to adapt to the inspection of weld seam areas of different widths.

[0052] Optionally, the movable end of the rotary motor 2 is connected to an extension seat, and a stepper motor is connected between the extension seat and the integrated seat 3. The integrated seat 3 can be driven to rotate by the stepper motor. The stepper motor allows the integrated seat 3 to be further rotated and adjusted according to actual needs. For example, when the auxiliary box 8 is being maintained, the stepper motor works with the robotic arm 1, and the auxiliary box 8 is placed horizontally at a lower height position for maintenance.

[0053] A data cable connects the welding arm 5 to the auxiliary box 8. Cables connected to the data cable on the welding arm 5 are laid inside the truncated cone 31. The detection arm 6 and the re-inspection arm 7 are both connected to the data cable signal via cables. The data cable on the welding arm 5 and the cables laid inside the truncated cone 31 ensure stable and reliable signal transmission between the components, providing a strong guarantee for the normal operation of the entire welding device.

[0054] The working process of this scheme is as follows: First, by controlling the movement of the robotic arm 1, the plug 4 is inserted into the open end of the heat exchanger tube to seal the end of the heat exchanger tube.

[0055] Then, adjust the welding arm 5, the inspection arm 6, and the re-inspection arm 7. Specifically, by controlling the electric extension rod 32, the rack 33 moves, which in turn drives the welding arm 5, the inspection arm 6, and the re-inspection arm 7 to rotate until their working ends are all aligned with the connection between the heat exchanger tube and the support. This achieves precise adjustment of the rotation angle of each arm. This design allows the welding, inspection, and re-inspection processes to work closely together, which can easily improve work efficiency and welding quality.

[0056] When performing welding work, the welding torch body 51 is used to weld the connection between the heat exchanger tube and the support. During the welding process, the rotary motor 2 is started to drive the integrated seat 3 to rotate, so that the welding torch body 51 can weld around the heat exchanger tube. During the rotation, the weld seam after being welded by the welding torch body 51 passes through the inspection arm 6 and the re-inspection arm 7 in sequence.

[0057] During the rotary welding process, the detection arm 6 detects the temperature of the weld after welding. If the detection arm 6 detects an abnormal weld temperature, the infrared temperature sensor and image acquisition unit 62 on the non-contact detection unit can quickly capture the temperature information and image data of the weld. Once an abnormal temperature point is found, it is immediately recorded and marked.

[0058] When the integrated seat 3 rotates to match the marked temperature anomaly point position with the re-inspection arm 7, the electric push rod on the re-inspection arm 7 starts to work, quickly pushing the contact detection unit 72 to extend and perform contact re-inspection of the temperature anomaly point; the contact temperature sensor on the contact detection unit 72 can more accurately measure the temperature of the weld in the temperature anomaly point area, thereby judging the quality of the weld; if the re-inspection result is still within the abnormal temperature range, the system will issue an alarm signal to prompt the operator.

[0059] This embodiment enables integrated automated operation of welding, inspection, and re-inspection, improving the efficiency and quality of radiator fin processing for new energy vehicles. The precise positioning of the robotic arm 1 and the sealing effect of the stopper 4 ensure the sealing and stability of the heat exchanger tubes during welding. The coordinated operation of the rotary motor 2 and the stepper motor allows the integrated base 3 to rotate and adjust flexibly to meet different welding requirements.

[0060] The rotation and precise adjustment of welding arm 5, inspection arm 6, and re-inspection arm 7 achieve seamless integration of welding, inspection, and re-inspection, improving work efficiency. The infrared temperature sensor and image acquisition unit 62 of the non-contact inspection unit can capture the temperature and image information of the weld in real time, promptly detecting and recording temperature anomalies. The precise measurement of the contact inspection unit 72 further verifies the quality of the weld, ensuring welding reliability. This solution can synchronously or independently control the rotation angle of the three arms, adapting to the welding and synchronous or independent inspection needs of heat exchanger tubes of different shapes, enhancing the flexibility of the device.

[0061] Example 2

[0062] Please see Figure 3 and Figure 5 Compared to Example 1, the difference in this example is:

[0063] In this embodiment, the following configuration is optional: a detection probe 43 is connected to the top of the conical plug 42, and a pair of laser sensors are fixedly connected to the detection probe 43; a buffer sleeve is laid on the top of the clamping post 41, and pressure sensors are evenly arranged on the buffer sleeve. When the pressure sensor detects pressure, it triggers the laser sensors on the detection probe 43 to perform detection.

[0064] Before starting work, insert the plug 4 into the pipe and use the plug 4 to calibrate the center. Specifically, the inner diameter of the pipe is checked by the detection probe 43 on the plug 4 to determine if it is consistent. Based on the detection results, control the robotic arm 1 to adjust the displacement of the integrated seat 3 to ensure that the plug 4 is coaxially aligned with the heat exchanger tube. This ensures that the welding arm 5, detection arm 6 and re-inspection arm 7 can be adjusted to approach the weld position simultaneously.

[0065] This embodiment enables precise centering of the heat exchanger tubes before welding, effectively avoiding welding quality problems caused by pipe misalignment. Through the cooperation of the retractable detection probe 43 on the stopper 4 and the laser sensor, the consistency of the pipe's inner diameter can be quickly and accurately detected, thereby guiding the robotic arm 1 to make precise displacement adjustments to the assembly seat 3. This design not only improves welding accuracy and efficiency but also significantly reduces the risk of welding defects caused by pipe misalignment. It easily improves the quality and efficiency of automated welding and reduces production costs.

[0066] Example 3

[0067] Please see Figure 8 Compared to Examples 1 and 2, the difference in this example is:

[0068] This embodiment can optionally include: a marking nozzle is installed in the middle of the movable end of the electric push rod; an ink tank for supplying ink to the marking nozzle is detachably installed on the re-inspection arm 7; and contact detection units 72 are arranged on both sides of the output end of the marking nozzle.

[0069] If the temperature at the abnormal point detected by the contact detection unit 72 is still within the abnormal range, the marking nozzle is turned on to mark the abnormal temperature point with ink.

[0070] An air outlet 34 fixed on a frustum 31 is provided between the inspection arm 6 and the re-inspection arm 7 and the welding arm 5. An air duct matching the air outlet 34 is opened in the integrated base 3. Between the air duct and the auxiliary box 8, the weld is cooled slowly by air cooling to avoid the weld temperature being too high and causing damage to the inspection arm 6 and the re-inspection arm 7. When air cooling is performed, a set temperature airflow and flow rate are blown towards the weld to drastically reduce the temperature of the weld area, thereby affecting the weld quality and interfering with the inspection results. The appropriate airflow flow rate and output airflow temperature are set by those skilled in the art to ensure that when the welding point of the welding arm 5 is matched with the position of the inspection arm 6 or the re-inspection arm 7, the temperature reduction of the welding point is within the expected range. In addition, during data analysis, those skilled in the art can infer the temperature range of the welding point after welding by the welding arm 5 based on the real-time welding point temperature detected by the inspection arm 6 or the re-inspection arm 7, thereby assisting in judging the weld quality.

[0071] Furthermore, air cooling can also help inkjet marking dry quickly, and when the air outlet 34 blows air, it can isolate the welding arm 5 from the detection arm 6, reducing the pollution of the smoke and harmful gases generated during the welding process on the detection arm 6, such as the lens of the image acquisition device.

[0072] This embodiment enables operators to be alerted via alarm signals and have an anomaly precisely marked with ink using a marking printhead after a temperature anomaly is detected and confirmed. This innovative design makes subsequent quality inspection and repair work more efficient and intuitive, allowing operators to quickly locate the problem and take targeted action.

[0073] The above description is merely a preferred embodiment of the present invention; it encompasses all the protection scope of the present invention. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in the present invention, based on the technical solutions and improved concepts of the present invention, should be covered within the protection scope of the present invention.

Claims

1. A welding device for processing radiator fins of new energy vehicles, comprising a robotic arm (1), wherein a rotary motor (2) is connected to the movable end of the robotic arm (1), a combined base (3) is rotatably connected to the power output end of the rotary motor (2), a frustum (31) is connected to the top of the combined base (3), and a retainer (4) is detachably connected to the top of the frustum (31); characterized in that: The truncated cone (31) is provided with a welding arm (5), a testing arm (6) and a re-inspection arm (7) surrounding the plug (4). The welding arm (5) includes a welding torch body (51), and an auxiliary box (8) is connected to the side end of the integrated seat (3). An air tank matching the welding torch body (51) is detachably installed in the auxiliary box (8). A main gear ring (52) that is rotatably connected to the frustum (31) is fixedly connected to the welding torch body (51). The detection arm (6) includes a main support (61), and a non-contact detection unit (62) is rotatably connected to the detection end of the main support (61). An infrared temperature sensor and an image acquisition device are connected to the non-contact detection unit (62). The re-inspection arm (7) includes a secondary support (71), on which an electric push rod is installed. A contact detection unit (72) is installed at the movable end of the electric push rod. A secondary gear ring is connected to the end of the main support (61) and the secondary support (71) near the integrated base (3). Three racks (33) that mesh with the main gear ring (52) and the two secondary gear rings are damped and slidable in the frustum (31). An electric extension rod (32) for driving the racks (33) to reciprocate is installed in the integrated base (3). Three extension beams (321) are connected to the power output end of the electric extension rod (32). An electric pin (322) for engaging with the bottom locking hole of the rack (33) is fixedly connected to the extension beam (321).

2. The welding device for processing radiator fins of new energy vehicles according to claim 1, characterized in that: The plug (4) includes a locking post (41), on which a conical plug (42) for inserting heat exchange fins is detachably connected, and a pressure sensor is connected between the conical plug (42) and the locking post (41).

3. The welding device for processing radiator fins of new energy vehicles according to claim 2, characterized in that: The top of the conical plug (42) is connected to a detection probe (43), and a pair of laser sensors are fixedly connected to the detection probe (43); a buffer sleeve is laid on the top of the pin (41), and pressure sensors are evenly arranged on the buffer sleeve.

4. The welding device for processing radiator fins of new energy vehicles according to claim 1. Its features are: The re-inspection arm (7) is equipped with a servo motor (73) for driving the contact detection unit (72) to rotate. The contact detection unit (72) is rotatably connected to the top of the movable end of the electric push rod through a rotating shaft. The top of the movable end of the electric push rod is provided with a receiving groove that matches the contact detection unit (72). A transmission belt is connected between the power output end of the servo motor (73) and the rotating shaft.

5. The welding device for processing radiator fins of new energy vehicles according to claim 1, characterized in that: An air outlet (34) fixed on a truncated cone (31) is provided between the inspection arm (6) and the re-inspection arm (7) and the welding arm (5). An air duct matching the air outlet (34) is opened in the integrated seat (3). A fan that inputs airflow into the air duct is installed in the auxiliary box (8).

6. The welding device for processing radiator fins of new energy vehicles according to claim 1, characterized in that: The electric push rod has a marking nozzle installed in the middle of its movable end, and the inspection arm (7) has an ink tank for supplying ink to the marking nozzle that can be detachably installed.

7. The welding device for processing radiator fins of new energy vehicles according to claim 1, characterized in that: A data line is connected between the welding arm (5) and the auxiliary box (8). The truncated cone (31) is filled with cables that are connected to the data line on the welding arm (5). The detection arm (6) and the re-inspection arm (7) are both connected to the data line signal via cables.

8. The welding device for processing radiator fins of new energy vehicles according to claim 1, characterized in that: The truncated cone (31) has a damping groove that matches the rack (33). The bottom end of the damping groove has a movable groove. A magnetic pin (311) that matches the locking hole on the rack (33) is slidably connected in the movable groove. An electromagnet that matches the magnetic pin (311) is fixedly connected to the movable end of the electric pin (322). When the rack (33) is at the bottom of the damping groove, it can switch between disconnecting and connecting with the electric pin (322).

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