A welding device for automotive air conditioning evaporators

Abstract

This invention discloses a welding device for automotive air conditioning evaporators, relating to the field of automotive parts processing technology. It includes a processing mechanism with a fixing mechanism fixedly mounted on its top. In use, after welding the automotive air conditioning evaporator, the second motor and reciprocating lead screw drive a slider to move within a movable frame, thereby causing the nozzle to move back and forth. Simultaneously, a delivery pump draws external air into the cooling box. The air is cooled by a cooling device, cooling pipes, and a circulating pump, and then sprayed from the nozzle through the delivery pipe to cool the welded evaporator. This allows workers to easily remove the evaporator without the risk of burns, significantly improving the production efficiency of automotive air conditioning evaporators.

Description

Technical Field

[0001] This invention relates to the field of automotive parts processing technology, specifically to a welding device for automotive air conditioning evaporators. Background Technology

[0002] In the modern automotive industry, the automotive air conditioning system is an important component for improving driving comfort, and its performance directly affects the overall quality of the car. As one of the core components of the system, the automotive air conditioning evaporator's main function is to evaporate the refrigerant into a gaseous state, thereby achieving heat exchange and regulating the temperature inside the vehicle. Therefore, the manufacturing process and welding technology of this component are particularly important.

[0003] In the existing technology, when welding automotive air conditioning evaporators using welding equipment, the surface temperature of the evaporator becomes very high due to the welding process. Furthermore, there is no device for rapidly cooling the welded evaporator surface, making it difficult for workers to quickly remove the welded evaporator. This severely impacts the production efficiency of automotive air conditioning evaporators and also poses a risk of burns during the removal process. Summary of the Invention

[0004] The purpose of this invention is to provide a welding device for automotive air conditioning evaporators, in order to solve the problem mentioned in the background that the surface temperature of the air conditioning evaporator is too high during conventional welding, making it impossible to remove it quickly, thus affecting the production efficiency of automotive air conditioning evaporators.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a welding device for automotive air conditioning evaporators, comprising a processing mechanism, a fixing mechanism fixedly installed on the top of the processing mechanism, and a welding mechanism fixedly installed on the top of the processing mechanism;

[0006] The processing mechanism includes a workbench, with two mounting boxes fixedly installed on the top of the workbench. A first telescopic rod is fixedly installed on the bottom inner wall of each of the two mounting boxes. Movable frames are movably embedded in the inner surface of each of the two mounting boxes, and the bottom of the movable frames is fixedly connected to the telescopic end of the first telescopic rod. A second motor is fixedly installed on one side of the outer wall of each of the two movable frames. A slider is movably embedded in the inner surface of each of the two movable frames. A reciprocating screw is movably inserted into the inner surface of each of the two sliders, and the outer surface of the reciprocating screw is fixedly connected to the output end of the second motor. A nozzle is fixedly installed at the bottom of one of the two sliders. A cooling box is fixedly installed on the outer surface of the workbench. A cooling pipe is installed inside the cooling box. A cooling device is fixedly installed on the top of the cooling box, and the outer surface of the cooling device is fixedly connected to the outer surface of the cooling pipe.

[0007] Preferably, a circulation pump is fixedly installed on the top of the cooling box, and the outer wall of the circulation pump is fixedly connected to the outer wall of the cooling pipe. A delivery pump is fixedly installed on the top of the cooling box, and a delivery pipe is fixedly connected to the top of the cooling box. The outer wall of the delivery pipe is fixedly connected to the outer wall of the nozzle, and the outer wall of the delivery pipe is fixedly connected to the outer wall of the delivery pump.

[0008] Preferably, a high-pressure nozzle is fixedly installed at the bottom of one of the two sliders, a heating box is fixedly installed on the outer wall of the worktable, a heating tube is provided inside the heating box, a power supply is fixedly installed on the top of the heating box, and the outer wall of the power supply is fixedly connected to the outer wall of the heating tube.

[0009] Preferably, a high-pressure pump is fixedly installed on the top of the heating box, a gas supply pipe is fixedly connected to the top of the heating box, and the outer wall of the gas supply pipe is fixedly connected to the outer wall of the high-pressure nozzle. The outer wall of the high-pressure pump is fixedly connected to the outer wall of the gas supply pipe, and an installation groove is provided on the top of the workbench.

[0010] Preferably, four auxiliary wheels are fixedly installed on the bottom of the inner wall of the mounting groove, a rotating platform is provided between the outer walls of the four auxiliary wheels, a first gear is fixedly sleeved on the outer wall of the rotating platform, a first motor is fixedly installed on the bottom of the inner wall of the mounting groove, a second gear is fixedly sleeved on the output end of the first motor, and the outer wall of the second gear meshes with the outer wall of the first gear.

[0011] Preferably, the fixing mechanism includes four fixing boxes, each of the four fixing boxes having multiple ventilation slots on its outer outer wall, each of the four fixing boxes having two fixing plates movably embedded in its inner outer wall, each of the four fixing boxes having two sets of limiting springs on its inner outer wall, and one side of the outer wall of the fixing plate being fixedly connected to one side of the outer wall of the limiting spring.

[0012] Preferably, the welding mechanism includes a cross slide, a movable block is movably embedded in the inner surface of the cross slide, a third motor is fixedly installed on one side of the outer wall of the movable block, a first transmission wheel is fixedly sleeved on the output end of the third motor, and a fixing groove is opened on the top of the movable block.

[0013] Preferably, a bearing is fixedly inserted into the inner wall of the fixing groove, a second telescopic rod is fixedly inserted into the inner wall of the bearing, a second transmission wheel is fixedly sleeved on the outer wall of the second telescopic rod, and the outer wall of the second transmission wheel is meshed with the outer wall of the first transmission wheel. An installation plate is fixedly installed at the telescopic end of the second telescopic rod.

[0014] Preferably, a fourth motor is fixedly installed on the top of the mounting plate, a first meshing wheel is fixedly sleeved on the output end of the fourth motor, a welding device body is movably inserted into the inner surface wall of the mounting plate, a second meshing wheel is fixedly sleeved on the outer surface wall of the welding device body, and the outer surface wall of the second meshing wheel is meshed with the outer surface wall of the first meshing wheel.

[0015] Preferably, the top of the rotary table is fixedly connected to the bottom of the fixed box, and the top of the worktable is fixedly connected to the bottom of the cross slide.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. In use, after the welding of the automotive air conditioning evaporator is completed by the welding device, the second motor and the reciprocating lead screw drive the slider to move inside the movable frame, thereby driving the nozzle to move back and forth. At the same time, under the action of the delivery pump, external air enters the cooling box. Under the action of the cooling device, cooling pipe and circulation pump, the air entering the cooling box can be cooled and sprayed out from the nozzle through the delivery pipe to cool and lower the temperature of the welded air conditioning evaporator. This allows the workers to easily remove the automotive air conditioning evaporator and avoid the risk of burns, greatly improving the production efficiency of automotive air conditioning evaporators.

[0018] 2. In use, when welding is required on the air conditioner evaporator, the components of the air conditioner evaporator are first assembled and placed inside the fixing box. At the same time, under the action of the limiting spring and the fixing plate, the evaporator components can be effectively fixed to prevent displacement during welding. Subsequently, under the action of the first motor, the first gear and other structures, the evaporator components can be moved. Furthermore, under the action of the power supply, heating tube, high-pressure pump and other structures, dust and impurities on the outer wall of the components can be cleaned, improving the cleanliness of the surface of the air conditioner evaporator components, thereby improving the subsequent welding quality and thus improving the production quality of automotive air conditioner evaporators.

[0019] 3. In use, when welding an air conditioner evaporator is required, the position and angle of the main body of the welding device can be adjusted through the cooperation of the cross slide, movable block, third motor, second telescopic rod and other structures, which greatly improves the welding quality of the air conditioner evaporator. Attached Figure Description

[0020] Figure 1 This is a perspective view of a welding device for automotive air conditioning evaporators according to the present invention.

[0021] Figure 2 This is a perspective view of a processing mechanism used in a welding device for automotive air conditioning evaporators according to the present invention.

[0022] Figure 3 This is a cross-sectional view of a processing mechanism used in a welding device for automotive air conditioning evaporators according to the present invention.

[0023] Figure 4 This is an exploded view of a processing mechanism in a welding device for automotive air conditioning evaporators according to the present invention.

[0024] Figure 5 This is a partial exploded view of a processing mechanism in a welding device for automotive air conditioning evaporators according to the present invention.

[0025] Figure 6 This is an exploded view of a fixing mechanism used in a welding device for automotive air conditioning evaporators according to the present invention.

[0026] Figure 7 This is an exploded view of a welding mechanism in a welding device for automotive air conditioning evaporators according to the present invention.

[0027] Figure 8 This is a partial exploded view of the welding mechanism in a welding device for automotive air conditioning evaporators according to the present invention.

[0028] In the diagram: 1. Processing mechanism; 11. Workbench; 12. Mounting slot; 121. Auxiliary wheel; 122. Rotary table; 123. First gear; 124. First motor; 125. Second gear; 13. Mounting box; 131. First telescopic rod; 132. Movable frame; 133. Second motor; 134. Slider; 135. Reciprocating screw; 16. High-pressure nozzle; 161. Heating box; 162. Heating tube; 163. Power supply; 164. High-pressure pump; 165. Air supply pipe; 17. Nozzle; 171. Cooling box; 172. Cooling tube; 173. 1. Cooling device; 174. Circulating pump; 175. Delivery pump; 176. Delivery pipe; 2. Fixing mechanism; 21. Fixing box; 211. Ventilation slot; 22. Fixing plate; 23. Limiting spring; 3. Welding mechanism; 31. Cross slide; 32. Movable block; 321. Third motor; 322. First transmission wheel; 323. Fixing slot; 324. Bearing; 325. Second telescopic rod; 326. Second transmission wheel; 33. Mounting plate; 331. Fourth motor; 332. First meshing wheel; 333. Main body of welding device; 334. Second meshing wheel. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1, refer to Figures 1-8 As shown: The present invention provides a welding device for automotive air conditioning evaporators, including a processing mechanism 1, a fixing mechanism 2 fixedly installed on the top of the processing mechanism 1, and a welding mechanism 3 fixedly installed on the top of the processing mechanism 1.

[0031] The processing mechanism 1 includes a workbench 11. Two mounting boxes 13 are fixedly installed on the top of the workbench 11. A first telescopic rod 131 is fixedly installed on the bottom of the inner wall of each of the two mounting boxes 13. A movable frame 132 is movably embedded in the inner surface of each of the two mounting boxes 13, and the bottom of the movable frame 132 is fixedly connected to the telescopic end of the first telescopic rod 131. A second motor 133 is fixedly installed on one side of the outer wall of each of the two movable frames 132. A slider 134 is movably embedded in the inner surface of each of the two movable frames 132. A reciprocating screw 135 is movably inserted into the inner surface of each of the two sliders 134, and the outer surface of the reciprocating screw 135 is fixedly connected to the output end of the second motor 133. The bottom of one of the two sliders 134 is fixedly installed with... The device includes a nozzle 17, a cooling box 171 fixedly installed on the outer wall of the workbench 11, a cooling pipe 172 installed inside the cooling box 171, a cooling device 173 fixedly installed on the top of the cooling box 171, and the outer wall of the cooling device 173 is fixedly connected to the outer wall of the cooling pipe 172. A circulation pump 174 is fixedly installed on the top of the cooling box 171, and the outer wall of the circulation pump 174 is fixedly connected to the outer wall of the cooling pipe 172. A delivery pump 175 is fixedly installed on the top of the cooling box 171, and a delivery pipe 176 is fixedly connected to the top of the cooling box 171, with the outer wall of the delivery pipe 176 fixedly connected to the outer wall of the nozzle 17 and the outer wall of the delivery pipe 176 fixedly connected to the outer wall of the delivery pump 175.

[0032] In this embodiment, after the automotive air conditioning evaporator is welded and transported to the appropriate position, the nozzle 17 is first adjusted to a suitable height by the action of the first telescopic rod 131. Then, by the action of the delivery pump 175, a negative pressure is generated inside the cooling box 171, drawing in external air. Simultaneously, by the action of the circulation pump 174, the coolant inside the cooling pipe 172 circulates, absorbing the heat from the air entering the cooling box 171 and cooling it down. Subsequently, the heat-absorbing coolant is transported to the cooling device 173, where it is cooled by the action of its internal fan or other heat dissipation device. The system can dissipate heat and cool the coolant, allowing it to continuously absorb heat from the air for an extended period. The cooled air is then delivered to the nozzle 17 and sprayed out by the delivery pump 175 and delivery pipe 176. Simultaneously, the second motor 133 drives the reciprocating screw 135 to rotate, thereby causing the slider 134 to reciprocate inside the movable frame 132 and driving the nozzle 17 to reciprocate. This ensures that the cold air sprayed from the nozzle 17 can fully contact the automotive air conditioning evaporator and absorb the heat generated during welding, thus achieving a cooling effect and preventing the risk of burns due to excessive temperature.

[0033] Example 2, according to Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5As shown, a high-pressure nozzle 16 is fixedly installed at the bottom of one of the two sliders 134. A heating box 161 is fixedly installed on the outer wall of the worktable 11. A heating tube 162 is installed inside the heating box 161. A power supply 163 is fixedly installed on the top of the heating box 161, and the outer wall of the power supply 163 is fixedly connected to the outer wall of the heating tube 162. A high-pressure pump 164 is fixedly installed on the top of the heating box 161. An air supply pipe 165 is fixedly connected to the top of the heating box 161, and the outer wall of the air supply pipe 165 is fixedly connected to the outer wall of the high-pressure nozzle 16. The outer wall of the high-pressure pump 164 is fixedly connected to the outer wall of the air supply pipe 165. A mounting groove 12 is opened on the top of the worktable 11, and four auxiliary... A rotating platform 122 is provided between the outer walls of the four auxiliary wheels 121. A first gear 123 is fixedly sleeved on the outer wall of the rotating platform 122. A first motor 124 is fixedly installed at the bottom of the inner wall of the mounting groove 12. A second gear 125 is fixedly sleeved on the output end of the first motor 124, and the outer wall of the second gear 125 is meshed with the outer wall of the first gear 123. The fixing mechanism 2 includes four fixing boxes 21. The outer walls of the four fixing boxes 21 are provided with multiple ventilation slots 211. The inner walls of the four fixing boxes 21 are movably embedded with two fixing plates 22. The inner walls of the four fixing boxes 21 are provided with two sets of limiting springs 23, and one side of the outer wall of the fixing plate 22 is fixedly connected to one side of the outer wall of the limiting spring 23.

[0034] In this embodiment, when welding is required on the automotive air conditioning evaporator, the manufactured evaporator components are first assembled under the operation of the worker and placed inside the fixing box 21. Under the action of the limiting spring 23 (a spring with a suitable elastic coefficient is selected), the fixing plate 22 can be moved towards the center, thereby fixing the evaporator components. Then, under the action of the first motor 124, the second gear 125 is driven to rotate, and at the same time, under the action of the first gear 123, the rotating table 122 is driven to rotate. Under the action of the auxiliary wheel 121, the rotating table 122 can be rotated more smoothly. When the rotating table 122 moves the evaporator components to a suitable position... After positioning, a negative pressure is generated inside the heating box 161 by the high-pressure pump 164, drawing in external air. Simultaneously, the air is heated by the power supply 163 and the heating tube 162. The air is then ejected from the high-pressure nozzle 16 through the high-pressure pump 164 and the air supply pipe 165. Under the action of the second motor 133 and the reciprocating screw 135, the slider 134 and the high-pressure nozzle 16 reciprocate inside the movable frame 132, allowing the high-temperature and high-pressure air to fully contact the components of the automotive air conditioning evaporator and remove dust and impurities from their surfaces, greatly improving the subsequent welding quality of the air conditioning evaporator.

[0035] Example 3, according to Figure 7 as well as Figure 8 As shown, the welding mechanism 3 includes a cross slide 31. A movable block 32 is movably embedded in the inner wall of the cross slide 31. A third motor 321 is fixedly installed on one side of the outer wall of the movable block 32. A first transmission wheel 322 is fixedly sleeved on the output end of the third motor 321. A fixing groove 323 is opened on the top of the movable block 32. A bearing 324 is fixedly inserted into the inner wall of the fixing groove 323. A second telescopic rod 325 is fixedly inserted into the inner wall of the bearing 324. A second transmission wheel 326 is fixedly sleeved on the outer wall of the second telescopic rod 325, and the outer wall of the second transmission wheel 326 is flush with the outer wall of the first transmission wheel 322. The second telescopic rod 325 is fixedly mounted with a mounting plate 33 at its telescopic end. A fourth motor 331 is fixedly mounted on the top of the mounting plate 33. A first meshing wheel 332 is fixedly sleeved on the output end of the fourth motor 331. A welding device body 333 is movably inserted into the inner surface wall of the mounting plate 33. A second meshing wheel 334 is fixedly sleeved on the outer surface wall of the welding device body 333, and the outer surface wall of the second meshing wheel 334 is meshed with the outer surface wall of the first meshing wheel 332. The top of the rotary table 122 is fixedly connected to the bottom of the fixed box 21, and the top of the worktable 11 is fixedly connected to the bottom of the cross slide table 31.

[0036] In this embodiment, after the cleaned automotive air conditioning evaporator components are transported to a suitable position, the welding device body 333 is moved to the appropriate position by the action of the cross slide 31. Then, under the action of the third motor 321, the first transmission wheel 322 is rotated. At the same time, under the action of the second transmission wheel 326 and the bearing 324, the second telescopic rod 325 is rotated, and the horizontal rotation of the welding device body 333 is adjusted to a suitable angle. Then, under the action of the fourth motor 331, the first meshing wheel 332 is rotated, and under the action of the second meshing wheel 334, the welding device body 333 can be rotated horizontally and longitudinally, thereby completing the position and angle adjustment of the welding device body 333, making it easier to weld the automotive air conditioning evaporator.

[0037] The working principle of the entire mechanism is as follows: When welding is required on the automotive air conditioning evaporator, the completed evaporator components are first assembled under the operation of the staff and placed inside the fixing box 21. Under the action of the limit spring 23, the fixing plate 22 can move towards the center, thereby fixing the evaporator components. Then, under the action of the first motor 124, the second gear 125 is driven to rotate, and at the same time, under the action of the first gear 123, the rotating table 122 is driven to rotate. Under the action of the auxiliary wheel 121, the rotating table 122 can rotate more smoothly. After the rotating table 122 moves the evaporator components to the appropriate position, the high-pressure pump 164 generates negative pressure inside the heating box 161. External air is drawn into the heating chamber 161 and heated by the power supply 163 and heating element 162. The heated air is then expelled from the high-pressure nozzle 16 via the high-pressure pump 164 and air supply pipe 165. The slider 134 and high-pressure nozzle 16 reciprocate within the movable frame 132 under the action of the second motor 133 and reciprocating screw 135. This allows the high-temperature, high-pressure air to fully contact the components of the automotive air conditioning evaporator, removing dust and impurities from their surfaces. After the dust and impurities are removed, the first motor 124, first gear 123, and other mechanisms drive the rotating table 122 to rotate, moving the cleaned evaporator components to a suitable position. Subsequently, under the action of the cross slide 31, the welding device body 333 is moved to a suitable position. Then, under the action of the third motor 321, the first transmission wheel 322 is rotated. At the same time, under the action of the second transmission wheel 326 and the bearing 324, the second telescopic rod 325 is rotated, and the horizontal rotation of the welding device body 333 is adjusted to a suitable angle. Then, under the action of the fourth motor 331, the first meshing wheel 332 is rotated, and under the action of the second meshing wheel 334, the welding device body 333 can be rotated horizontally and longitudinally. This completes the adjustment of the position and angle of the welding device body 333 and performs welding on the evaporator components. After the automotive air conditioning evaporator is welded and transported to a suitable position, the welding device body 333 is then... Under the action of a telescopic rod 131, the nozzle 17 is adjusted to a suitable height. Then, under the action of the delivery pump 175, a negative pressure is generated inside the cooling tank 171, drawing in outside air. Simultaneously, under the action of the circulation pump 174, the coolant inside the cooling pipe 172 circulates, absorbing heat from the air entering the cooling tank 171 and cooling it down. The heat-absorbing coolant is then transported to the cooling device 173, where a fan or other heat dissipation device further cools it, allowing it to continuously absorb heat from the air for an extended period. The cooled air is then transported back to the device by the delivery pump 175 and the delivery pipe 176.The air can be conveyed to the nozzle 17 and sprayed out. Simultaneously, under the action of the second motor 133, the reciprocating screw 135 rotates, thereby causing the slider 134 to reciprocate inside the movable frame 132, and driving the nozzle 17 to reciprocate as well. This ensures that the cold air sprayed from the nozzle 17 can fully contact the automotive air conditioning evaporator, thus achieving heat dissipation and cooling of the evaporator.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welding device for automotive air conditioning evaporators, characterized in that: The system includes a processing mechanism (1), a fixing mechanism (2) fixedly installed on the top of the processing mechanism (1), and a welding mechanism (3) fixedly installed on the top of the processing mechanism (1); the processing mechanism (1) includes a workbench (11), two mounting boxes (13) fixedly installed on the top of the workbench (11), a first telescopic rod (131) fixedly installed on the bottom of the inner wall of each of the two mounting boxes (13), a movable frame (132) movably embedded in the inner surface wall of each of the two mounting boxes (13), and the bottom of the movable frame (132) fixedly connected to the telescopic end of the first telescopic rod (131), and a second motor (133) fixedly installed on one side of the outer wall of each of the two movable frames (132). Each of the movable frames (132) has a slider (134) movably embedded in its inner surface wall. Each of the two sliders (134) has a reciprocating screw (135) movably inserted into its inner surface wall. The outer surface wall of the reciprocating screw (135) is fixedly connected to the output end of the second motor (133). A nozzle (17) is fixedly installed at the bottom of one of the two sliders (134). A cooling box (171) is fixedly installed on the outer surface wall of the workbench (11). A cooling pipe (172) is provided inside the cooling box (171). A cooling device (173) is fixedly installed on the top of the cooling box (171). The outer surface wall of the cooling device (173) is fixedly connected to the outer surface wall of the cooling pipe (172). A circulation pump (174) is fixedly installed on the top of the cooling box (171), and the outer wall of the circulation pump (174) is fixedly connected to the outer wall of the cooling pipe (172). A delivery pump (175) is fixedly installed on the top of the cooling box (171), and a delivery pipe (176) is fixedly connected to the top of the cooling box (171). The outer wall of the delivery pipe (176) is fixedly connected to the outer wall of the nozzle (17), and the outer wall of the delivery pipe (176) is fixedly connected to the outer wall of the delivery pump (175). The welding mechanism (3) includes a cross slide (31), a movable block (32) is movably embedded in the inner surface of the cross slide (31), a third motor (321) is fixedly installed on one side of the outer wall of the movable block (32), a first transmission wheel (322) is fixedly sleeved on the output end of the third motor (321), and a fixed groove (323) is opened on the top of the movable block (32). A bearing (324) is fixedly inserted into the inner wall of the fixed groove (323), a second telescopic rod (325) is fixedly inserted into the inner wall of the bearing (324), a second transmission wheel (326) is fixedly sleeved on the outer wall of the second telescopic rod (325), and the outer wall of the second transmission wheel (326) is meshed with the outer wall of the first transmission wheel (322). An installation plate (33) is fixedly installed at the telescopic end of the second telescopic rod (325). A fourth motor (331) is fixedly installed on the top of the mounting plate (33). A first meshing wheel (332) is fixedly sleeved on the output end of the fourth motor (331). A welding device body (333) is movably inserted into the inner surface wall of the mounting plate (33). A second meshing wheel (334) is fixedly sleeved on the outer surface wall of the welding device body (333), and the outer surface wall of the second meshing wheel (334) meshes with the outer surface wall of the first meshing wheel (332).

2. The welding device for automotive air conditioning evaporators according to claim 1, characterized in that: A high-pressure nozzle (16) is fixedly installed at the bottom of one of the two sliders (134). A heating box (161) is fixedly installed on the outer wall of the worktable (11). A heating tube (162) is provided inside the heating box (161). A power supply (163) is fixedly installed on the top of the heating box (161), and the outer wall of the power supply (163) is fixedly connected to the outer wall of the heating tube (162).

3. The welding apparatus for automotive air conditioning evaporators according to claim 2, characterized in that: A high-pressure pump (164) is fixedly installed on the top of the heating box (161). A gas supply pipe (165) is fixedly connected to the top of the heating box (161). The outer wall of the gas supply pipe (165) is fixedly connected to the outer wall of the high-pressure nozzle (16). The outer wall of the high-pressure pump (164) is fixedly connected to the outer wall of the gas supply pipe (165). An installation groove (12) is provided on the top of the workbench (11).

4. The welding apparatus for automotive air conditioning evaporators according to claim 3, characterized in that: Four auxiliary wheels (121) are fixedly installed on the bottom of the inner wall of the mounting groove (12). A rotating platform (122) is provided between the outer walls of the four auxiliary wheels (121). A first gear (123) is fixedly sleeved on the outer wall of the rotating platform (122). A first motor (124) is fixedly installed on the bottom of the inner wall of the mounting groove (12). A second gear (125) is fixedly sleeved on the output end of the first motor (124), and the outer wall of the second gear (125) meshes with the outer wall of the first gear (123).

5. The welding apparatus for automotive air conditioning evaporators according to claim 4, characterized in that: The fixing mechanism (2) includes four fixing boxes (21). The outer walls of the four fixing boxes (21) are provided with multiple ventilation slots (211). The inner walls of the four fixing boxes (21) are movably fitted with two fixing plates (22). The inner walls of the four fixing boxes (21) are provided with two sets of limiting springs (23). One side of the outer wall of the fixing plate (22) is fixedly connected to one side of the outer wall of the limiting spring (23).

6. The welding apparatus for automotive air conditioning evaporators according to claim 5, characterized in that: The top of the rotary table (122) is fixedly connected to the bottom of the fixed box (21), and the top of the worktable (11) is fixedly connected to the bottom of the cross slide (31).

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