Welding device for aluminum alloy radiator of new energy automobile

Abstract

The invention relates to the technical field of welding equipment, in particular to a new energy automobile aluminum alloy radiator welding device which comprises a rack, a belt conveyor used for conveying a radiator is installed at the bottom of the inner side of the rack, XZ-axis moving platforms are installed on the inner walls of the two sides of the rack, and stepping motors are installed on the XZ-axis moving platforms; an eccentric disc is connected to an output shaft of the stepping motor, the eccentric position of the eccentric disc is installed on the output shaft of the stepping motor, an installation plate is connected to the eccentric position of the eccentric disc, a laser welding head is installed on the installation plate, and a covering mechanism is arranged on the upper portion of the rack and used for covering and protecting heat dissipation holes in the core. The cover plate is driven by the electric push rod to cover the core body, so that the heat dissipation holes can be effectively covered and protected, welding slag is prevented from entering the heat dissipation holes in the welding process and the welding slag cleaning process, and the heat dissipation holes are effectively protected.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, and in particular, to a welding device for aluminum alloy radiators of new energy vehicles. Background Art

[0002] With the rapid development of the new energy vehicle industry, an efficient and reliable thermal management system has become one of the key factors to improve its performance. As one of the core components of the thermal management system, aluminum alloy radiators have been widely used in new energy vehicles due to their light weight, high thermal conductivity, and good corrosion resistance. To meet the requirements of higher heat dissipation efficiency, modern aluminum alloy radiators are usually designed with a complex structure having a large number of small heat dissipation holes. These heat dissipation holes can significantly increase the heat dissipation area, thereby improving the overall heat dissipation performance.

[0003] Specifically, an aluminum alloy radiator of a new energy vehicle usually consists of multiple parts, including heat dissipation fins, a water tank (or called a core), and caps at both ends. During the manufacturing process, the core and the caps at both ends need to be precisely fixed by laser welding technology to ensure that the radiator can work properly and dissipate heat effectively during vehicle operation. As an advanced connection technology, laser welding has the advantages of concentrated energy, fast welding speed, and small heat affected zone, and is particularly suitable for the fine processing of aluminum alloy materials.

[0004] Although existing laser welding equipment can effectively perform laser welding on the core and the caps at both ends, the existing laser welding equipment lacks an effective mechanism for covering and protecting the heat dissipation holes on the core. During the laser welding process of an aluminum alloy radiator, a certain amount of metal oxides or incompletely fused residual substances, namely the so-called "welding slag", may be generated after the high-temperature molten metal cools and solidifies. Since there are a large number of heat dissipation holes distributed on the core, and these heat dissipation holes are often small in diameter and densely arranged, during the welding process, the welding slag is likely to enter the interior of the heat dissipation holes, resulting in the following problems: 1. Decrease in heat dissipation performance: The blockage of the heat dissipation holes by welding slag reduces the effective heat dissipation area, hinders air circulation, and lowers the overall heat dissipation efficiency.

[0005] 2. Impairment of structural strength: The presence of welding slag may change the internal stress distribution of the radiator, resulting in a decrease in the local structural strength and increasing the risk of cracking or failure during long-term use.

[0006] 3. Difficulty in assembly: During the subsequent assembly process, the welding slag in the heat dissipation holes may interfere with other components, affecting the assembly accuracy and efficiency. Summary of the Invention

[0007] The purpose of the present invention is to provide a welding device for aluminum alloy radiators of new energy vehicles that can effectively cover and protect the heat dissipation holes during the welding process in order to solve the above problems.

[0008] To achieve the above object, the present invention provides the following technical solution: An aluminum alloy radiator welding device for new energy vehicles, comprising a frame. At the inner bottom of the frame, a belt conveyor for conveying the radiator is installed. On both inner side walls of the frame, XZ-axis moving platforms are installed. On the XZ-axis moving platforms, stepping motors are installed. On the output shafts of the stepping motors, eccentric discs are connected. The eccentric positions of the eccentric discs are installed on the output shafts of the stepping motors. At the eccentric positions of the eccentric discs, mounting plates are connected. On the mounting plates, laser welding heads are installed. At the upper part of the frame, a covering mechanism is provided. The covering mechanism is used to cover and protect the heat dissipation holes on the core body. The covering mechanism includes a chain drive device provided at the upper part of the frame. On the chain of the chain drive device, connecting plates are rotatably connected at intervals along its movement track. On the connecting plates, cover plates are connected through the first telescopic rods. The cover plates are used to cover and protect the heat dissipation holes on the core body. On the connecting plates, electric push rods for driving the cover plates to lift and lower are installed.

[0009] Preferably, at the inner bottom of the frame, a cleaning mechanism for cleaning welding slag is provided. The cleaning mechanism includes two fixing plates symmetrically connected to the inner bottom of the frame. At the inner bottom of the frame, two guide rods are symmetrically connected. On both guide rods, lifting plates are provided. On both the fixing plates and the lifting plates, two electric rotating rods are provided. The two electric rotating rods on the fixing plates are arranged vertically. The two electric rotating rods on the lifting plates are arranged horizontally. On the electric rotating rods, cleaning parts for cleaning welding slag are connected. At the inner bottom of the frame, two screw rod motors are symmetrically installed. The screws of the two screw rod motors are respectively threadedly connected to the two lifting plates to drive the lifting plates to lift and lower.

[0010] Preferably, two covers are connected to both the fixing plates and the lifting plates. The covers and the cleaning parts are in one-to-one correspondence. The covers are sleeved outside the corresponding cleaning parts. Exhaust pipes are connected to the covers.

[0011] Preferably, a pressing mechanism is provided on the XZ-axis moving platform. The pressing mechanism is used to press and fix the lid on the core body. The pressing mechanism includes a connecting plate connected to the XZ-axis moving platform. The connecting plate is located below the stepping motor. On the connecting plate, a movable plate is connected through the second telescopic rod. On the movable plate, pressing rollers for pressing and fixing the lid on the core body are provided at intervals. On the connecting plate, a cylinder for driving the movable plate to reciprocate is installed.

[0012] Preferably, positioning plates are connected to both sides of the cover plate. The lower parts of the positioning plates are bent outwards.

[0013] Preferably, two guiding plates are symmetrically connected to the belt conveyor. The sides of the guiding plates far from the belt conveyor are bent outwards. The guiding plates are used to guide the radiator to move centrally onto the belt conveyor.

[0014] Preferably, support rollers located inside the belt are provided at intervals in the belt conveyor.

[0015] Preferably, the cleaning member is a brush roller.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Driving the cover plate to cover the core body by the electric push rod can effectively cover and protect the heat dissipation holes, prevent welding slag from entering the heat dissipation holes during the welding process and the welding slag cleaning process, and achieve effective protection of the heat dissipation holes.

[0017] 2. The welding slag on the top and bottom of the radiator can be cleaned by the rotation of the upper and lower two cleaning members on the fixing plate, and the welding slag on the left and right side walls of the radiator can be cleaned by the lifting and rotation of the two cleaning members on the lifting plate, so as to realize the automatic cleaning of the welding slag on the radiator and improve the cleaning efficiency and effect.

[0018] 3. The exhaust pipe is externally connected to an exhaust device through a hose. Through the cooperation of the hood, the exhaust pipe and the exhaust device, the welding slag cleaned from the radiator can be pumped to a suitable place for collection to prevent the welding slag from spreading everywhere.

[0019] 4. Driving the movable plate to drive the pressure roller to move towards the cover by the cylinder can press and fix the cover on the core body, thereby improving the docking stability between the cover and the core body, preventing the cover from falling off the core body during the welding process, and ensuring the smooth progress of the operation of welding the core body and the cover together. Description of the Drawings

[0020] Figure 1 It is a three-dimensional structure schematic diagram of the present invention.

[0021] Figure 2 It is an installation schematic diagram of the covering mechanism and the cleaning mechanism of the present invention.

[0022] Figure 3 It is a partial three-dimensional structure schematic of the present invention Figure 1 .

[0023] Figure 4 It is a three-dimensional structure schematic diagram of the cleaning mechanism of the present invention.

[0024] Figure 5 It is a three-dimensional structure schematic diagram of the pressing mechanism of the present invention.

[0025] Figure 6 It is an installation schematic diagram of the support roller of the present invention.

[0026] Figure 7 It is a partial three-dimensional structure schematic of the present invention Figure 2 .

[0027] Figure 8 It is a partial three-dimensional structure schematic of the present invention Figure 3 .

[0028] Reference numerals in the figure: 1 - frame, 2 - belt conveyor, 21 - guide plate, 22 - support roller, 3 - XZ-axis moving platform, 31 - stepping motor, 4 - eccentric disk, 41 - mounting plate, 5 - laser welding head, 61 - chain drive assembly, 62 - connecting plate, 63 - first telescopic rod, 64 - cover plate, 65 - electric push rod, 66 - drive motor, 67 - positioning plate, 71 - fixing plate, 72 - electric rotating rod, 73 - cleaning part, 74 - guide rod, 75 - lifting plate, 76 - lead screw motor, 81 - cover, 82 - exhaust pipe, 90 - connecting plate, 91 - second telescopic rod, 92 - movable plate, 93 - pressure roller, 94 - cylinder, 10 - core body, 11 - lid. Detailed implementation manners

[0029] The present application will be further described in detail below with reference to the accompanying drawings. It is necessary to point out here that the following specific implementation manners are only used to further illustrate the present application and should not be construed as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0030] See Figures 1-8, a welding device for an aluminum alloy radiator of a new energy vehicle, comprising a frame 1. At the inner bottom of the frame 1, a belt conveyor 2 for conveying the radiator is installed. Two guide plates 21 are symmetrically connected to the front and rear of the left side of the belt conveyor 2. The left side of the guide plate 21 is bent outward. Through the guide plate 21 bent outward on the left side, the radiator can be guided to move centered onto the belt conveyor 2. Inside the belt conveyor 2, support rollers 22 are rotatably connected at equal intervals from left to right. The support rollers 22 are located inside the belt on the belt conveyor 2. Through the support rollers 22, the core body 10 can be effectively supported to avoid the core body 10 from sagging and ensure the stability of the core body 10 during the welding process. On the left sides of the inner walls of the front and rear sides of the frame 1, XZ-axis moving platforms 3 are installed. A stepping motor 31 is installed on the XZ-axis moving platform 3. Through the XZ-axis moving platform 3, the stepping motor 31 can be driven to perform precise left-right and up-down movements. The XZ-axis moving platform 3 is a prior art and will not be elaborated here. An eccentric disc 4 is connected to the output shaft of the stepping motor 31. The eccentric position of the eccentric disc 4 is installed on the output shaft of the stepping motor 31. Mounting plates 41 are connected to the eccentric positions on the opposite sides of the front and rear two eccentric discs 4. A laser welding head 5 is installed on the mounting plate 41. The included angle between the laser welding head 5 and the mounting plate 41 is set to 40 degrees to 50 degrees. A covering mechanism is provided on the upper part of the frame 1. The covering mechanism is used to cover and protect the heat dissipation holes on the core body 10. The covering mechanism includes a chain drive device provided on the upper part of the frame 1. The chain drive device includes a chain drive assembly 61 and a drive motor 66. The chain drive assembly 61 includes a rotating shaft, a sprocket, and a chain. On the upper part of the frame 1, two left and right rotating shafts are rotatably connected. Four sprockets are connected to each of the two rotating shafts, front and rear. Chains are sleeved between the left and right corresponding sprockets. The drive motor 66 is installed on the upper right part of the frame 1. The output shaft of the drive motor 66 is connected to the right rotating shaft. When the drive motor 66 works, it drives the sprocket on the right rotating shaft to rotate, thereby driving the chain to rotate. Four connecting plates 62 are rotatably connected at equal intervals along the movement trajectory between the front and rear two chains. Left and right two telescopic rods one 63 are connected to the connecting plate 62. A cover plate 64 is connected between the two telescopic rods one 63. The cover plate 64 is used to cover and protect the heat dissipation holes on the core body 10. An electric push rod 65 located between the two telescopic rods one 63 is installed on the connecting plate 62. The push rod of the electric push rod 65 is connected to the cover plate 64 to drive the cover plate 64 to lift and lower. Left and right positioning plates 67 are connected to both sides of the cover plate 64. The lower part of the positioning plate 67 is bent outward.

[0031] See Figure 2 and Figure 4, a cleaning mechanism for cleaning welding slag is provided at the inner bottom of the frame 1. The cleaning mechanism includes a fixing plate 71, an electric rotating rod 72, a cleaning member 73, a guide rod 74, a lifting plate 75 and a lead screw motor 76. Two fixing plates 71 are symmetrically connected to the front and rear of the right side of the inner bottom of the frame 1 with the belt conveyor 2 as the symmetry center. The fixing plate 71 is U-shaped. Two guide rods 74 are symmetrically connected to the front and rear of the right side of the inner bottom of the frame 1 with the belt conveyor 2 as the symmetry center. The guide rod 74 is inverted U-shaped. A U-shaped lifting plate 75 is slidably provided on both guide rods 74. Both the guide rod 74 and the lifting plate 75 are located on the right side of the fixing plate 71. Two electric rotating rods 72 are provided on both the fixing plate 71 and the lifting plate 75. The two electric rotating rods 72 on the fixing plate 71 are arranged vertically, and the two electric rotating rods 72 on the lifting plate 75 are arranged horizontally. The electric rotating rod 72 is composed of a motor and a rotating rod. A cleaning member 73 for cleaning welding slag is connected to the rotating rod of the electric rotating rod 72. The cleaning member 73 is a brush roller. The brushes on the brush roller can not only form a relatively uniform pressure distribution on the surface of the radiator, which helps to ensure effective cleaning of the entire contact surface, but also enter the welds and corners, so as to more effectively clean the welding slag in difficult-to-reach areas. Two lead screw motors 76 are symmetrically installed on the front and rear of the inner bottom of the frame 1 with the belt conveyor 2 as the symmetry center. The two lead screw motors 76 are respectively located inside the two inverted U-shaped guide rods 74. The lead screws on the two lead screw motors 76 are respectively rotatably connected to the inner tops of the two inverted U-shaped guide rods 74. The lead screws of the two lead screw motors 76 are respectively threadedly connected to the two lifting plates 75 to drive the lifting plate 75 to lift and lower.

[0032] First, butt the core body 10 and the covers 11 at both ends together, and then use the conveying device to convey the butted core body 10 and covers 11 to the right onto the belt conveyor 2. Then, control the belt conveyor 2 to work to convey the core body 10 and covers 11 to the right to the welding station. At the same time, control the driving motor 66 to work to drive the chain transmission assembly 61 to drive the connecting plate 62 to rotate, so as to rotate the cover plate 64 to directly above the core body 10. Then, control the electric push rod 65 to drive the cover plate 64 to move downward to cover the core body 10. The downward movement of the cover plate 64 drives the positioning plate 67 to move downward. Since the lower part of the positioning plate 67 is bent outward, the downward movement of the positioning plate 67 can push the core body 10 to move left and right to be centered, so that the core body 10 is completely aligned with the cover plate 64, and the core body 10 can be positioned by the positioning plate 67 and the cover plate 64 to avoid the displacement of the core body 10 during subsequent welding. And the cover plate 64 covering the core body 10 can effectively cover and protect the heat dissipation holes, avoiding the welding slag from entering the heat dissipation holes during the subsequent welding process and the welding slag cleaning process, and realizing the effective protection of the heat dissipation holes.

[0033] Then, control the XZ-axis moving platform 3 to drive the stepping motor 31 to drive the eccentric disk 4 to move to the right, so as to drive the laser welding head 5 to move to the right along the tops of the core body 10 and the cover 11 through the mounting plate 41, and perform laser welding on the tops of the core body 10 and the cover 11. When the laser welding head 5 moves to the upper right corner of the core body 10 and the cover 11, control the stepping motor 31 to drive the eccentric disk 4 to rotate, so as to drive the laser welding head 5 to rotate along the upper right corner of the core body 10 and the cover 11 through the mounting plate 41, and realize laser welding at the corner of the core body 10 and the cover 11 (see Figure 7 ). Subsequently, control the XZ-axis moving platform 3 to drive the stepping motor 31 to move downward, so as to drive the laser welding head 5 to move downward along the right side of the core body 10 and the cover 11, and perform laser welding on the right side of the core body 10 and the cover 11. When the laser welding head 5 moves downward to the lower right corner of the core body 10 and the cover 11, control the stepping motor 31 to drive the eccentric disk 4 to rotate again, so as to drive the laser welding head 5 to rotate along the lower right corner of the core body 10 and the cover 11, and perform laser welding on the corner. The laser welding head 5 then rotates to the lower side of the core body 10 and the cover 11 (see Figure 8 ). Then, control the XZ-axis moving platform 3 to drive the stepping motor 31 to move to the left, so as to drive the laser welding head 5 to move to the left along the bottom of the core body 10 and the cover 11, and perform laser welding on the bottom of the core body 10 and the cover 11. When the laser welding head 5 moves to the lower left corner of the core body 10 and the cover 11, control the stepping motor 31 to drive the eccentric disk 4 to rotate once again, so as to drive the laser welding head 5 to rotate along the lower left corner of the core body 10 and the cover 11, and perform laser welding on the corner. Subsequently, control the XZ-axis moving platform 3 to drive the stepping motor 31 to move upward, so as to drive the laser welding head 5 to move upward along the left side of the core body 10 and the cover 11, and perform laser welding on the left side of the core body 10 and the cover 11. When the laser welding head 5 moves upward to the upper left corner of the core body 10 and the cover 11, control the stepping motor 31 to drive the eccentric disk 4 to rotate again, so as to drive the laser welding head 5 to rotate along the upper left corner of the core body 10 and the cover 11, and perform laser welding on the corner. After the above operations, the entire radiator is fully welded.

[0034] After the welding of the entire radiator is completed, control the belt conveyor 2 to continue conveying the radiator to the right. At the same time, control the driving motor 66 to work, so as to drive the chain transmission assembly 61 to drive the connecting plate 62 to rotate, so that the cover plate 64 moves to the right together with the radiator, maintaining effective protection for the heat dissipation holes and preventing welding slag from entering the heat dissipation holes during the subsequent welding slag cleaning process. During the process of the radiator moving to the right, its top and bottom respectively contact the upper and lower cleaning parts 73 on the fixing plate 71. Control the electric rotating rod 72 on the fixing plate 71 to work, so as to drive the cleaning parts 73 on the fixing plate 71 to rotate. The rotation of the upper and lower cleaning parts 73 on the fixing plate 71 can clean the welding slag on the top and bottom of the radiator. When the radiator moves to the right and aligns with the U-shaped lifting plate 75, control the lead screw motor 76 to work, so as to drive the lifting plate 75 to drive the electric rotating rod 72 and the cleaning parts 73 thereon to move up and down reciprocally. When the left and right cleaning parts 73 on the lifting plate 75 move up and down, they respectively contact the left and right side walls of the radiator. Control the electric rotating rod 72 on the lifting plate 75 to work, so as to drive the cleaning parts 73 on the lifting plate 75 to rotate. The up and down movement and rotation of the left and right cleaning parts 73 on the lifting plate 75 can clean the welding slag on the left and right side walls of the radiator. After the welding slag cleaning is completed, control the electric push rod 65 to drive the cover plate 64 to move up and separate from the radiator.

[0035] See Figure 4 , two covers 81 are connected to both the fixing plate 71 and the lifting plate 75. The covers 81 and the cleaning parts 73 correspond one by one. The cover 81 covers the outside of the corresponding cleaning part 73, and an air extraction pipe 82 is connected to the cover 81.

[0036] Connect the air extraction pipe 82 to an external air extraction device through a hose. Through the cooperation of the cover 81, the air extraction pipe 82 and the air extraction device, the welding slag cleaned from the radiator can be sucked to a suitable location for collection, so as to prevent the welding slag from spreading everywhere.

[0037] See Figure 3 and Figure 5 , a pressing mechanism is provided on the XZ-axis moving platform 3. The pressing mechanism is used to press and fix the lid 11 on the core body 10. The pressing mechanism includes a connecting plate 90 connected to the XZ-axis moving platform 3. The connecting plate 90 is located below the stepping motor 31. Two second telescopic rods 91 are connected to the connecting plate 90. An L-shaped movable plate 92 is connected between the two second telescopic rods 91. Pressing rollers 93 are rotatably connected to the inner bottom surface of the L-shaped movable plate 92 at intervals from left to right. The pressing rollers 93 are used to press and fix the lid 11 on the core body 10. A cylinder 94 is installed on the connecting plate 90 between the two second telescopic rods 91. The piston rod of the cylinder 94 is connected to the movable plate 92 to drive the movable plate 92 to move back and forth.

[0038] When the core body 10 and the lid 11 that need to be laser welded together are conveyed to the welding station to the right, the control cylinder 94 drives the movable plate 92 to drive the pressure roller 93 to move towards the lid 11. The lid 11 can be pressed and fixed on the core body 10 through the pressure roller 93, so as to improve the docking stability between the lid 11 and the core body 10, avoid the lid 11 falling off the core body 10 during the welding process, and ensure the smooth progress of the operation of welding the core body 10 and the lid 11 together. When the XZ-axis moving platform 3 drives the laser welding head 5 to move to the right, it also drives the connecting plate 90, the second telescopic rod 91, the movable plate 92, the pressure roller 93 and the cylinder 94 to move to the right together. The pressure roller 93 moves and rolls to the right along the lid 11 to avoid damaging the lid 11 due to hard friction. Before the top welding of the core body 10 and the lid 11 is completed and the control stepping motor 31 drives the eccentric disk 4 to rotate, first control the cylinder 94 to drive the movable plate 92 to drive the pressure roller 93 to move back to its original position to avoid the eccentric disk 4 and prevent it from hindering the subsequent rotation of the eccentric disk 4.

[0039] The above embodiments only represent the preferred embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations, improvements and substitutions can be made, and these all belong to the protection scope of the present invention.

Claims

1. A welding device for aluminum alloy radiators of new energy vehicles, comprising a frame (1), a belt conveyor (2) for conveying radiators is installed at the inner bottom of the frame (1), XZ axis moving platforms (3) are installed on the inner walls of both sides of the frame (1), a stepper motor (31) is installed on the XZ axis moving platform (3), an eccentric disk (4) is connected to the output shaft of the stepper motor (31), the eccentric position of the eccentric disk (4) is installed on the output shaft of the stepper motor (31), a mounting plate (41) is connected to the eccentric position of the eccentric disk (4), and a laser welding head (5) is installed on the mounting plate (41), characterized in that: A covering mechanism is provided on the upper part of the frame (1), and is used to cover the heat dissipation holes on the protective core (10). The covering mechanism comprises a chain transmission device arranged on the upper part of the frame (1), and a connecting plate (62) is rotatably connected to the chain of the chain transmission device at intervals along its motion trajectory. A cover plate (64) is connected to the connecting plate (62) via a telescopic rod (63). The cover plate (64) is used to cover the heat dissipation holes on the protective core (10), and an electric push rod (65) is installed on the connecting plate (62) for driving the cover plate (64) to rise and fall.

2. A welding device for aluminum alloy radiator of new energy vehicle according to claim 1, characterized in that: A cleaning mechanism for cleaning welding slag is provided at the inner bottom of the frame (1), the cleaning mechanism comprising two fixed plates (71) symmetrically connected to the inner bottom of the frame (1), two guide rods (74) symmetrically connected to the inner bottom of the frame (1), a lifting plate (75) being provided on each of the two guide rods (74), two electric rotating rods (72) being provided on each of the fixed plate (71) and the lifting plate (75), the two electric rotating rods (72) on the fixed plate (71) being arranged in a vertical direction, the two electric rotating rods (72) on the lifting plate (75) being arranged in a horizontal direction, a cleaning member (73) for cleaning welding slag being connected to the electric rotating rods (72), and two screw motors (76) being symmetrically installed at the inner bottom of the frame (1), the screws of the two screw motors (76) being respectively threadedly connected to the two lifting plates (75) to drive the lifting plates (75) to move up and down.

3. A welding device for aluminum alloy radiator of new energy vehicle according to claim 2, characterized in that: The fixed plate (71) and the lifting plate (75) are both connected to two covers (81), the covers (81) and the cleaning members (73) correspond one to one, the covers (81) are arranged outside the corresponding cleaning members (73), and the covers (81) are connected to exhaust pipes (82).

4. A welding device for aluminum alloy radiator of new energy vehicle according to claim 3, characterized in that: A pressing mechanism is provided on the XZ axis moving platform (3), and is used to press and fix the cover (11) on the core body (10). The pressing mechanism comprises a connecting plate (90) connected to the XZ axis moving platform (3), and the connecting plate (90) is located at the lower side of the stepping motor (31). A movable plate (92) is connected to the connecting plate (90) via a second telescopic rod (91), and pressure rollers (93) are provided at intervals on the movable plate (92) for pressing and fixing the cover (11) on the core body (10). A cylinder (94) is installed on the connecting plate (90) for driving the movable plate (92) to move back and forth.

5. A welding device for aluminum alloy radiator of new energy vehicle according to claim 4, characterized in that: Positioning plates (67) are connected to both sides of the cover plate (64), and the lower part of the positioning plate (67) is bent outwards.

6. A welding device for aluminum alloy radiator of new energy vehicle according to claim 5, characterized in that: Two guide plates (21) are symmetrically connected to the belt conveyor (2). The guide plates (21) are bent outwardly at a side away from the belt conveyor (2). The guide plates (21) are used to guide the radiator to move centrally onto the belt conveyor (2).

7. A welding device for aluminum alloy radiator of new energy vehicle according to claim 6, characterized in that: Support rollers (22) located on the inner side of the belt are arranged at intervals in the belt conveyor (2).

8. A welding device for aluminum alloy radiator of new energy vehicle according to claim 7, characterized in that: The cleaning member (73) is a brush roller.

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