Automobile intercooler core brazing device

Abstract

The invention discloses an automobile intercooler core brazing device, and relates to the technical field of automobile accessory machining. The device comprises a vacuum brazing furnace and a treatment tunnel, two advancing rails are fixedly mounted in the treatment tunnel, a transport vehicle is placed on the two advancing rails, a steering motor is fixedly mounted at the bottom of the transport vehicle, an output shaft of the steering motor extends to the top of the transport vehicle, and a steering shaft is fixedly mounted on the output shaft of the steering motor; and a steering plate is fixedly mounted at the top end of the steering shaft. By arranging the agent spraying mechanism, welding flux is evenly sprayed to a pre-assembled core through the multiple flow dividing spray heads on the two sides, all heat dissipation air pipes, side plates, a main plate and fins in the main plate can make contact with the welding flux along with movement of the transport vehicle, and therefore the wettability of a follow-up welding flux frame after melting is improved, all components are cleaned, the welding efficiency is improved, and the service life of the welding flux frame is prolonged. The spraying uniformity of the welding flux on the pre-assembled core body is improved, meanwhile, the spraying speed of the welding flux is increased, and the waiting time before brazing is shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive parts processing, and particularly relates to a brazing device for an automotive intercooler core body. Background Art

[0002] The charge air cooler is a radiator located between the engine and the turbocharger, abbreviated as the intercooler. It is generally equipped in turbocharged vehicles and is responsible for cooling the high-temperature air after supercharging, reducing the intake air temperature, and improving the charging efficiency and power performance of the engine. During the turbocharging process, the air will be highly compressed and generate a large amount of heat, resulting in a decrease in air expansion density. At the same time, the engine will be damaged due to excessive temperature. The common air-cooled intercooler is generally equipped at the front of the vehicle, so that the high-temperature and high-pressure air output by the supercharger is dispersed into many small pipes, and there is a normal-temperature and high-speed air flow generated during the driving of the vehicle outside the pipes, so that the air is cooled before entering the cylinder.

[0003] The existing air-cooled intercooler cores generally include main boards, air ducts, heat dissipation fins, side plates, etc. When brazing the cores, since there are many core components and the dimensions are fine, a brazing device is often used. At present, the brazing equipment for intercooler cores is generally a vacuum brazing furnace. After the solder is assembled on the core and the flux is sprayed, the cores are stacked and sent into the brazing furnace for welding. However, this welding method will cause the solder before welding to be not firmly assembled with the core, and it is necessary to separately bundle and fix the stacked cores before sending them into the brazing furnace, which will prolong the waiting time before core brazing, resulting in excessive loss of flux on the core and affecting the welding effect. For this reason, a brazing device for an automotive intercooler core body is proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that the current brazing method for intercooler cores will cause the solder before welding to be not firmly assembled with the core, and it is necessary to separately bundle and fix the stacked cores before sending them into the brazing furnace, which will prolong the waiting time before core brazing, resulting in excessive loss of flux on the core and affecting the welding effect. The present invention provides a brazing device for an automotive intercooler core body.

[0005] The present invention specifically adopts the following technical solutions to achieve the above purpose: An automotive intercooler core brazing device includes a vacuum brazing furnace and a processing tunnel. Inside the processing tunnel, two traveling tracks are fixedly installed. A transport vehicle is placed on the two traveling tracks. A steering motor is fixedly installed at the bottom of the transport vehicle. The output shaft of the steering motor extends to the top of the transport vehicle and is fixedly installed with a steering shaft. A steering plate is fixedly installed at the top of the steering shaft. Two clamping slide rails and two clamping electric push rods are fixedly installed on the top of the steering plate. Clamping sliders are slidably installed on the tops of the clamping slide rails. The telescopic ends of the two clamping electric push rods are respectively fixedly connected to the two clamping sliders. Deflection motors are fixedly installed at the tops of the clamping sliders. Clamping plates are fixedly installed on the output shafts of the deflection motors. A pre-assembled core is placed between the two clamping plates. The pre-assembled core includes two main boards. A plurality of heat dissipation air ducts and two side boards are inserted between the two main boards. The heat dissipation air ducts are all located between the two side boards. Two solder racks are arranged on one side of each main board. The four solder racks are respectively located at both ends of the plurality of heat dissipation air ducts.

[0006] Further, a spray agent mechanism for spraying a soldering agent is arranged inside the processing tunnel. The spray agent mechanism includes a U-shaped flow dividing pipe arranged inside the processing tunnel. The U-shaped flow dividing pipe corresponds to the position of the pre-assembled core. A welding delivery pipe is fixedly installed on the outer side wall of the processing tunnel. One end of the welding delivery pipe extends into the processing tunnel and is communicated with the U-shaped flow dividing pipe. A plurality of uniformly distributed flow dividing nozzles are fixedly installed on one side where the two bottom ends of the U-shaped flow dividing pipe are close to each other. A liquid storage pool is opened inside the traveling track. The liquid storage pool is located between the two traveling tracks and at the bottom of the U-shaped flow dividing pipe. Cleaning nozzles are fixedly installed at both bottom ends of the U-shaped flow dividing pipe. Two symmetrically arranged baffle inclined plates are fixedly installed on the top of the transport vehicle. The two cleaning nozzles are both inclined and respectively face the two baffle inclined plates.

[0007] Further, a disassembly and assembly mechanism for disassembling and assembling the solder rack is provided inside the processing tunnel. The disassembly and assembly mechanism includes a disassembly box fixedly installed inside the processing tunnel. A plurality of linear guide rails are fixedly installed inside the disassembly box. The plurality of linear guide rails are respectively located on both sides inside the disassembly box. Electric sliders are drivingly installed on the tops of the linear guide rails. The tops of the plurality of electric sliders on the same side are fixedly installed with the same support plate. Two vertical frames are fixedly installed on the top of the support plate. Two symmetrically arranged horizontal frames are fixedly installed on the side walls of the vertical frames. Electric slide rails are fixedly installed at the ends of the plurality of horizontal frames on both sides that are close to each other. Miniature grippers adapted to the solder rack are drivingly installed on one side of each electric slide rail. The two miniature grippers on the same vertical frame are symmetrically arranged. A hot melt fixing unit for hot melt fixing the solder rack is provided on the top of the disassembly box. The hot melt fixing unit includes a receiving groove fixedly installed on the top of the disassembly box. A receiving electric push rod is fixedly installed on the top of the receiving groove. The telescopic end of the receiving electric push rod extends into the receiving groove and the inside of the disassembly box and is fixedly installed with an electric heating clamp. An electric heating machine is fixedly installed on the top of the disassembly box. The electric heating clamp is electrically connected to the electric heating machine. An H-shaped heating rack is clamped on the electric heating clamp. The H-shaped heating rack corresponds to the position of the pre-assembled core body.

[0008] Further, a loading and feeding structure for loading and feeding the pre-assembled core body is provided between the vacuum brazing furnace and the processing tunnel. The loading and feeding structure includes a loading table arranged between the vacuum brazing furnace and the processing tunnel. A plurality of horizontally arranged long conveying rollers and short conveying rollers are rotatably installed on the top of the loading table. The same loading wire mesh frame is placed on the plurality of long conveying rollers and the short conveying rollers. An electric lifting table is arranged inside the loading table. The telescopic end of the electric lifting table extends into the inside of the loading wire mesh frame. The plurality of short conveying rollers are respectively distributed on both sides of the electric lifting table.

[0009] Further, a cooling fan is fixedly installed inside the processing tunnel. The cooling fan is located on the side of the loading table away from the vacuum brazing furnace. The position of the cooling fan corresponds to the position of the pre-assembled core body.

[0010] The beneficial effects of the present invention are as follows: 1. By providing a spraying mechanism, the present invention enables the flux to be evenly sprayed on the pre-assembled core body through a plurality of shunt nozzles on both sides. As the transport vehicle moves, each heat dissipation air duct, side plate, main board, and internal fins can come into contact with the flux, thereby improving the wettability after the subsequent melting of the solder rack and cleaning each component, increasing the uniformity of the flux spraying on the pre-assembled core body, while accelerating the speed of spraying the flux and reducing the waiting time before brazing; 2. By providing a disassembly and assembly mechanism, the present invention enables the pre-disassembly and assembly mechanism to automatically disassemble and assemble the solder rack, facilitating the secondary spraying of the flux, reducing the spraying dead angles, increasing the residence time of the flux on the pre-assembled core, and during the disassembly and assembly process of the solder rack, the pre-assembled core is always clamped by the clamping plates on both sides, thus avoiding the problem of easy disassembly of the pre-assembled core during the traditional transportation process; 3. By providing a hot melt fixing unit, during the secondary spraying process, the upper and lower ends of the solder rack are heated and melted and reassembled, and the two ends of the solder rack are bonded to each other to form a complete solder frame, greatly improving the assembly tightness of the solder rack and preventing the pre-assembled core from falling apart during subsequent loading and feeding. At the same time, hot melt fixing is carried out using the gap between the secondary spraying of the flux, further reducing the waiting time before brazing; 4. By providing a feeding structure, during the loading and feeding process, the telescopic end of the electric lifting platform will lift and extend into the interior of the feeding grid, limit the feeding grid, and after the pre-assembled core is placed in the feeding grid, it will be supported by the electric lifting platform. Then the electric lifting platform descends a unit distance to keep the height of each placement of the electric lifting platform consistent, thus facilitating the loading by the staff. When the feeding grid is full, the telescopic end of the electric lifting platform completely withdraws from the feeding grid, enabling the feeding grid to be transported along the long conveying rollers and short conveying rollers. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a three-dimensional structural schematic diagram of the interior of the processing tunnel of the present invention; Figure 3 is a three-dimensional structural schematic diagram of the first perspective of the transport vehicle of the present invention; Figure 4 is a three-dimensional structural schematic diagram of the second perspective of the transport vehicle of the present invention; Figure 5 is a three-dimensional structural schematic diagram of the cooler core of the present invention; Figure 6 is a three-dimensional structural schematic diagram of the solder rack of the present invention; Figure 7 is a three-dimensional structural schematic diagram of the spray agent mechanism of the present invention; Figure 8 is a three-dimensional structural schematic diagram of the disassembly and assembly mechanism of the present invention; Figure 9 is a three-dimensional structural schematic diagram of the hot melt fixing unit of the present invention; Figure 10 is a three-dimensional structural schematic diagram of the feeding mechanism of the present invention; Figure 11 is a three-dimensional structural schematic diagram of the feeding grid of the present invention; Reference numerals: 1, vacuum brazing furnace; 2, processing tunnel; 3, traveling track; 4, transport vehicle; 5, steering motor; 6, steering shaft; 7, steering plate; 8, clamping slide rail; 9, clamping carriage; 10, clamping electric push rod; 11, deflection motor; 12, clamping plate; 13, pre-assembled core; 1301, main board; 1302, heat dissipation air duct; 1303, side plate; 14, solder rack; 15, welding delivery pipe; 16, U-shaped shunt pipe; 17, shunt nozzle; 18, cleaning nozzle; 19, flow blocking inclined plate; 20, disassembly and packing box; 21, linear guide rail; 22, electric slider; 23, support plate; 24, vertical frame; 25, horizontal frame; 26, electric slide rail; 27, micro gripper; 28, accommodation groove; 29, storage electric push rod; 30, electric heating clamp; 31, electric heating machine; 32, H-shaped heating rack; 33, loading platform; 34, long conveying roller; 35, short conveying roller; 36, loading wire mesh rack; 37, electric lifting platform; 38, cooling fan. Detailed implementation manners

[0012] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0013] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents the selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0014] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0015] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer", "upper", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0016] Such as Figures 1 to 11As shown, an automotive intercooler core brazing device includes a vacuum brazing furnace 1 and a processing tunnel 2. As Figure 1 、 Figure 2 shown, two traveling tracks 3 are fixedly installed inside the processing tunnel 2, and a transport vehicle 4 is placed on the two traveling tracks 3. As Figure 3 、 Figure 4 shown, a steering motor 5 is fixedly installed at the bottom of the transport vehicle 4. The output shaft of the steering motor 5 extends to the top of the transport vehicle 4 and is fixedly installed with a steering shaft 6. A steering plate 7 is fixedly installed at the top of the steering shaft 6. Two clamping slide rails 8 and two clamping electric push rods 10 are fixedly installed at the top of the steering plate 7. Clamping sliders 9 are slidably installed at the tops of the clamping slide rails 8. The telescopic ends of the two clamping electric push rods 10 are respectively fixedly connected to the two clamping sliders 9. Deflection motors 11 are fixedly installed at the tops of the clamping sliders 9. Clamping plates 12 are fixedly installed on the output shafts of the deflection motors 11. A pre-assembled core 13 is placed between the two clamping plates 12. As Figure 5 shown, the pre-assembled core 13 includes two main boards 1301. A plurality of heat dissipation air ducts 1302 and two side plates 1303 are inserted between the two main boards 1301. The heat dissipation air ducts 1302 are all located between the two side plates 1303. Two solder racks 14 are arranged on one side of each main board 1301. The four solder racks 14 are respectively located at both ends of the plurality of heat dissipation air ducts 1302.

[0017] In this embodiment, the plurality of heat dissipation air ducts 1302 and the two side plates 1303 are tightly inserted into the main boards 1301 on both sides through interference fit. The material of the solder rack 14 is an alloy with a melting point lower than that of the base material of the pre-assembled core 13. After the pre-assembly of the pre-assembled core 13, the four solder racks 14 are also pre-assembled with the pre-assembled core 13 through interference fit insertion. As Figure 4 shown, the transport vehicle 4 is in an "I" shape. As Figure 6 shown, the solder rack 14 is a wavy mechanism, which fits the shape of the numerous heat dissipation air ducts 1302. The lengths of the upper and lower ends of the solder rack 14 are slightly greater than the width of the side plate 1303 to reduce the influence caused by the melting loss during the hot melt fixation of the solder rack 14.

[0018] More specifically, when the pre-assembled core body 13 brazing device of the vehicle is in use, the transport vehicle 4 moves to the entrance of the processing tunnel 2 away from the vacuum brazing furnace 1, the steering motor 5 drives the steering plate 7 to rotate until it is perpendicular to the traveling direction of the transport vehicle 4. The staff inserts the pre-assembled core body 13 with the solder rack 14 pre-inserted and assembled from top to bottom between the two clamping plates 12. The steering motor 5 drives the steering plate 7 to reset, and the transport vehicle 4 drives the pre-assembled core body 13 to move along the traveling track 3 into the processing tunnel 2. When the transport vehicle 4 travels to the spraying mechanism, it stops. The spraying mechanism sprays the flux on the periphery of the pre-assembled core body 13, so that the main board 1301, the side board 1303, and the heat dissipation air duct 1302 are all wetted with the flux. Then, the transport vehicle 4 sends the pre-assembled core body 13 into the disassembly and assembly box 20 and stops. The disassembly and assembly structures on both sides remove the solder rack 14 from the pre-assembled core body 13. The transport vehicle 4 carries the pre-assembled core body 13 back to the spraying mechanism for secondary spraying, so that the joints between the main board 1301 and the heat dissipation air duct 1302 and the side board 1303 originally covered by the solder rack 14 are also sprayed with the flux. Then, the pre-assembled core body 13 is sent into the disassembly and assembly box 20 again to be reassembled with the solder rack 14 to complete the pre-treatment. Finally, it is sent to the feeding mechanism for batch loading and then collectively sent into the vacuum brazing furnace 1 for heating and brazing, so that the two solder racks 14 melt and penetrate into the joints between the main board 1301 and the heat dissipation air duct 1302 and the side board 1303 to complete the brazing.

[0019] Inside the processing tunnel 2, there is a spraying mechanism for spraying flux, such as Figure 2 , Figure 7 shown. Specifically, the spraying mechanism includes a U-shaped shunt pipe 16 arranged inside the processing tunnel 2. The U-shaped shunt pipe 16 corresponds to the position of the pre-assembled core body 13. A welding delivery pipe 15 is fixedly installed on the outer side wall of the processing tunnel 2. One end of the welding delivery pipe 15 extends into the processing tunnel 2 and is connected to the U-shaped shunt pipe 16. On one side where the two bottom ends of the U-shaped shunt pipe 16 are close to each other, a plurality of uniformly distributed shunt nozzles 17 are fixedly installed.

[0020] In this embodiment, one end of the welding delivery pipe 15 is connected to the flux storage tank, and the flux is transported for welding through an infusion pump.

[0021] More specifically, by setting up the spray mechanism, when the pre-assembled core 13 is transported into the U-shaped shunt pipe 16, the welding delivery pipe 15 transports the flux into the U-shaped shunt pipe 16 and evenly sprays it onto the pre-assembled core 13 through a plurality of shunt nozzles 17 on both sides. As the transport vehicle 4 moves, each heat dissipation air duct 1302, side plate 1303, main board 1301, and the internal fins can come into contact with the flux, thereby improving the wettability after the subsequent solder rack 14 melts, cleaning each component of the pre-assembled core 13, increasing the uniformity of the flux sprayed on the pre-assembled core 13, while accelerating the speed of spraying the flux and reducing the waiting time before brazing.

[0022] As Figure 2 , Figure 7 shown, specifically, a liquid storage pool is provided inside the traveling track 3. The liquid storage pool is located between the two traveling tracks 3 and at the bottom of the U-shaped shunt pipe 16. Two cleaning nozzles 18 are fixedly installed at both bottom ends of the U-shaped shunt pipe 16. As Figure 4 shown, two symmetrically arranged baffle inclined plates 19 are fixedly installed on the top of the transport vehicle 4. Both cleaning nozzles 18 are inclined and respectively face the two baffle inclined plates 19.

[0023] More specifically, by setting up the baffle inclined plates 19, the deflection motor 11 drives the two clamping plates 12 to drive the pre-assembled core 13 to deflect left and right, so that the excess flux and the sputtered flux during spraying will be blocked by the baffle inclined plates 19 on both sides and flow into the liquid storage pool through the gap between the transport vehicle 4 and the baffle inclined plates 19, preventing the flux from being sputtered into the interior of the processing tunnel 2 and the traveling track 3. At the same time, a small amount of flux will be sprayed onto the baffle inclined plates 19 through the cleaning nozzles 18 at the bottom end of the U-shaped shunt pipe 16 to clean the baffle inclined plates 19 and the inner wall of the liquid storage pool.

[0024] An assembly and disassembly mechanism for disassembling and assembling the solder rack 14 is provided inside the processing tunnel 2. As Figure 2 , Figure 8 shown, specifically, the assembly and disassembly mechanism includes a disassembly box 20 fixedly installed inside the processing tunnel 2. A plurality of linear guide rails 21 are fixedly installed inside the disassembly box 20. The plurality of linear guide rails 21 are respectively located on both sides inside the disassembly box 20. Electric sliders 22 are drivingly installed on the tops of the linear guide rails 21. The tops of the plurality of electric sliders 22 on the same side are fixedly installed with the same support plate 23. Two vertical frames 24 are fixedly installed on the top of the support plate 23. Two symmetrically arranged horizontal frames 25 are fixedly installed on the side walls of the vertical frames 24. Electric slide rails 26 are fixedly installed at the mutually approaching ends of the plurality of horizontal frames 25 on both sides. Miniature jaws 27 adapted to the solder rack 14 are drivingly installed on one side of the electric slide rails 26. The two miniature jaws 27 on the same vertical frame 24 are symmetrically arranged.

[0025] More specifically, by setting up the disassembly and assembly mechanism, after the pre-assembled core 13 is sent into the disassembly and packing box 20, the electric sliders 22 on both sides move along the linear guide rails 21, and drive the four groups of micro-jaws 27 to move towards the pre-assembled core 13 through the vertical frame 24 and the horizontal frame 25. Then, each electric slide rail 26 drives the micro-jaws 27 to move towards the solder rack 14 and clamp the four solder racks 14 up and down respectively. After that, the electric slider 22 resets, removes the four solder racks 14 from the pre-assembled core 13. At this time, the transport vehicle 4 drives the pre-assembled core 13 to retreat for secondary flux spraying. After the spraying is completed, the disassembly and assembly structure reassembles the solder rack 14 on the pre-assembled core 13 again, thus realizing the automatic disassembly and assembly of the solder rack 14, facilitating the secondary flux spraying, reducing the spraying dead angle, increasing the residence time of the flux on the pre-assembled core 13. During the disassembly and assembly process of the solder rack 14, the pre-assembled core 13 is always clamped by the clamping plates 12 on both sides, thus avoiding the problem that the pre-assembled core 13 is prone to falling apart during the traditional transportation process.

[0026] A hot melt fixing unit for hot melt fixing the solder rack 14 is arranged at the top of the disassembly and packing box 20, such as Figure 2 、 Figure 9 shown. Specifically, the hot melt fixing unit includes a receiving groove 28 fixedly installed at the top of the disassembly and packing box 20. A receiving electric push rod 29 is fixedly installed at the top of the receiving groove 28. The telescopic end of the receiving electric push rod 29 extends into the inside of the receiving groove 28 and the disassembly and packing box 20 and is fixedly installed with an electric heating clamp 30. An electric heating machine 31 is fixedly installed at the top of the disassembly and packing box 20. The electric heating clamp 30 is electrically connected to the electric heating machine 31. An H-shaped heating rack 32 is clamped on the electric heating clamp 30, and the position of the H-shaped heating rack 32 corresponds to that of the pre-assembled core 13.

[0027] More specifically, by setting up the hot melt fixing unit, during the secondary spraying process of the pre-assembled core 13, the receiving electric push rod 29 drives the electric heating clamp 30 inside the receiving groove 28 to drive the H-shaped heating rack 32 to move down until it is located between the solder racks 14 on both sides. At this time, the H-shaped heating rack 32 remains in a high-temperature state under the heating of the electric heating machine 31 and the electric heating clamp 30. The disassembly and assembly mechanisms on both sides send the solder racks 14 to the H-shaped heating rack 32, so that the upper and lower ends of the four solder racks 14 are in contact with the H-shaped heating rack 32 and are slightly melted by heat. Then, the solder rack 14 and the H-shaped heating rack 32 are reset in sequence, and the solder rack 14 is reassembled on the pre-assembled core 13. At this time, the two ends of the two groups of solder racks 14 are bonded to each other, and the solder racks 14 on both sides are combined into a complete solder frame, greatly improving the assembly tightness of the solder rack 14 on the pre-assembled core 13, thus further preventing the pre-assembled core 13 from falling apart during subsequent loading and feeding. At the same time, the hot melt fixing is carried out by using the gap of the secondary flux spraying, further reducing the waiting time before brazing.

[0028] A loading structure for loading the pre-assembled core 13 is provided between the vacuum brazing furnace 1 and the processing tunnel 2. Figure 2 、 Figure 10 As shown, specifically, the loading structure includes a loading platform 33 arranged between the vacuum brazing furnace 1 and the processing tunnel 2, and a plurality of horizontally arranged long conveying rollers 34 and short conveying rollers 35 are rotatably installed on the top of the loading platform 33, and the same loading grid 36 is placed on the plurality of long conveying rollers 34 and short conveying rollers 35.

[0029] In this embodiment, the long conveying roller 34, the short conveying roller 35 and the loading platform 33 form an unpowered conveyor. The long conveying roller 34 and the short conveying roller 35 support the loading grid 36, so that the loading grid 36 can move toward the vacuum brazing furnace 1 as the long conveying roller 34 and the short conveying roller 35 roll under human push or pull for loading.

[0030] More specifically, by setting up a loading structure, after the pre-processing of the pre-assembled core 13 is completed, the transport vehicle 4 moves to the exit of the processing tunnel 2, and the staff extracts the pre-assembled core 13 from the clamping plate 12 and places it in the loading grid 36. When the loading grid 36 is fully loaded, the insulating door and the airtight door of the vacuum brazing furnace 1 are opened, and the loading grid 36 is pushed into the vacuum brazing furnace 1 along the long conveyor roller 34 and the short conveyor roller 35 for brazing.

[0031] like Figure 10 As shown, specifically, an electric lifting platform 37 is provided inside the loading platform 33 , the telescopic end of the electric lifting platform 37 extends to the inside of the loading grid 36 , and a plurality of short conveying rollers 35 are respectively distributed on both sides of the electric lifting platform 37 .

[0032] In this embodiment, if Figure 11 As shown, the bottom of the loading grid 36 is a plate-like structure for supporting the preassembled cores 13 stacked inside. A clearance hole is provided at the bottom of the loading grid 36 for the telescopic end of the electric lifting platform 37 to pass through, so that the electric lifting platform 37 can extend into the loading grid 36 to support the stacked preassembled cores 13.

[0033] More specifically, by setting up an electric lifting platform 37, during the loading and feeding process, the telescopic end of the electric lifting platform 37 will be lifted and extended to the inside of the feeding grid 36 to limit the feeding grid 36. After the pre-assembled core 13 is placed in the feeding grid 36, it will be supported by the electric lifting platform 37, and then the electric lifting platform 37 will be lowered a unit distance so that the height of the electric lifting platform 37 is kept consistent each time, thereby facilitating the loading of the staff. When the feeding grid 36 is fully loaded, the telescopic end of the electric lifting platform 37 completely withdraws from the feeding grid 36, so that the feeding grid 36 can be transported along the long conveyor roller 34 and the short conveyor roller 35.

[0034] As shown Figure 2 Specifically, an air-cooling fan 38 is fixedly installed inside the processing tunnel 2. The air-cooling fan 38 is located on the side of the loading table 33 away from the vacuum brazing furnace 1, and the position of the air-cooling fan 38 corresponds to the position of the pre-assembled core 13.

[0035] More specifically, by setting the air-cooling fan 38, the pre-assembled core 13 after the pretreatment will pass through the air-cooling fan 38, so that the heat-melt bonding part of the solder rack 14 is cooled, accelerating the curing of the bonding part of the solder rack 14, and at the same time preventing subsequent workers from being scalded during loading.

[0036] In summary: Flux spraying: The transport vehicle 4 moves to the entrance of the processing tunnel 2 away from the vacuum brazing furnace 1. The steering motor 5 drives the steering plate 7 to rotate perpendicular to the traveling direction of the transport vehicle 4. The worker inserts the pre-assembled core 13 pre-inserted and assembled with the solder rack 14 from top to bottom between the two clamping plates 12. The steering motor 5 drives the steering plate 7 to reset. The transport vehicle 4 drives the pre-assembled core 13 to move inside the processing tunnel 2 along the traveling track 3. When the transport vehicle 4 travels to the spraying mechanism and stops, the welding delivery pipe 15 delivers the flux into the U-shaped shunt pipe 16 and evenly sprays it on the pre-assembled core 13 through a plurality of shunt nozzles 17 on both sides. As the transport vehicle 4 moves, each heat dissipation air duct 1302, side plate 1303, main board 1301, and the internal fins can contact the flux, thereby improving the wettability after the subsequent melting of the solder rack 14 and cleaning each component of the pre-assembled core 13; Secondary spraying: Then the transport vehicle 4 sends the pre-assembled core 13 into the disassembly and packing box 20 and stops. The electric sliders 22 on both sides travel along the linear guide rails 21, driving the four groups of micro grippers 27 to move towards the pre-assembled core 13 through the vertical frame 24 and the horizontal frame 25. Then each electric slide rail 26 drives the micro grippers 27 to move towards the solder rack 14 and respectively clamp the four solder racks 14 up and down. Then the electric slider 22 resets, removes the four solder racks 14 from the pre-assembled core 13. At this time, the transport vehicle 4 drives the pre-assembled core 13 to retreat for secondary flux spraying, so that the joints between the main board 1301 covered by the solder rack 14 and the heat dissipation air duct 1302 and side plate 1303 are also sprayed with flux. After the spraying is completed, the disassembly and assembly structure reassembles the solder rack 14 on the pre-assembled core 13; Hot melt fixation: During the secondary spraying process of the pre-assembled core 13, the receiving electric push rod 29 drives the electric heating clamp 30 inside the receiving groove 28 to drive the H-shaped heating rack 32 to move downward until it is located between the solder racks 14 on both sides. At this time, the H-shaped heating rack 32 maintains a high temperature state under the heating of the electric heating machine 31 and the electric heating clamp 30. The disassembly and assembly mechanisms on both sides send the solder racks 14 to the H-shaped heating rack 32, so that the upper and lower ends of the four solder racks 14 are in contact with the H-shaped heating rack 32 and are slightly melted by heat. Then, the solder racks 14 and the H-shaped heating rack 32 are reset in sequence, and the solder racks 14 are reassembled on the pre-assembled core 13. At this time, the two ends of the two groups of solder racks 14 are bonded to each other, and the solder racks 14 on both sides are combined into a complete solder frame; Loading and brazing: After the pre-assembled core 13 is pretreated, the transport vehicle 4 moves to the exit of the processing tunnel 2. The staff takes out the pre-assembled core 13 from the clamping plate 12 and places it in the loading wire mesh rack 36. When the loading wire mesh rack 36 is full, the heat-insulating door and the airtight door of the vacuum brazing furnace 1 are opened, and the loading wire mesh rack 36 is pushed into the vacuum brazing furnace 1 along the long conveying roller 34 and the short conveying roller 35 for brazing, so that the two groups of solder racks 14 are melted and penetrate into the joints between the main board 1301, the heat dissipation air duct 1302, and the side plate 1303 to complete the brazing.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A brazing device for an automotive intercooler core, characterized in that, It includes a vacuum brazing furnace (1) and a processing tunnel (2). Inside the processing tunnel (2), two traveling tracks (3) are fixedly installed. A transport vehicle (4) is placed on the two traveling tracks (3). A steering motor (5) is fixedly installed at the bottom of the transport vehicle (4). The output shaft of the steering motor (5) extends to the top of the transport vehicle (4) and a steering shaft (6) is fixedly installed. A steering plate (7) is fixedly installed at the top of the steering shaft (6). Two clamping slide rails (8) and two clamping electric push rods (10) are fixedly installed at the top of the steering plate (7). Clamping slide frames (9) are slidably installed at the tops of the clamping slide rails (8). The telescopic ends of the two clamping electric push rods (10) are respectively fixedly connected to the two clamping slide frames (9). Deflection motors (11) are fixedly installed at the tops of the clamping slide frames (9). Clamping plates (12) are fixedly installed on the output shafts of the deflection motors (11). A pre-assembled core (13) is placed between the two clamping plates (12). The pre-assembled core (13) includes two main boards (1301). A plurality of heat dissipation air ducts (1302) and two side boards (1303) are inserted between the two main boards (1301). The heat dissipation air ducts (1302) are all located between the two side boards (1303). Two solder racks (14) are arranged on one side of each main board (1301). The four solder racks (14) are respectively located at both ends of the plurality of heat dissipation air ducts (1302). A spray agent mechanism for spraying flux is arranged inside the processing tunnel (2). A disassembly and assembly mechanism for disassembling and assembling the solder rack (14) is arranged inside the processing tunnel (2). A loading and feeding structure for loading and feeding the pre-assembled core (13) is arranged between the vacuum brazing furnace (1) and the processing tunnel (2).

2. The brazing device for an automotive intercooler core according to claim 1, wherein, The spray agent mechanism includes a U-shaped shunt pipe (16) arranged inside the processing tunnel (2). The U-shaped shunt pipe (16) corresponds to the position of the pre-assembled core (13). A welding delivery pipe (15) is fixedly installed on the outer side wall of the processing tunnel (2). One end of the welding delivery pipe (15) extends into the processing tunnel (2) and is communicated with the U-shaped shunt pipe (16). A plurality of uniformly distributed shunt nozzles (17) are fixedly installed on one side where the two bottom ends of the U-shaped shunt pipe (16) are close to each other.

3. A brazing device for an automotive intercooler core according to claim 2, characterized in that, A liquid storage pool is formed inside the traveling track (3). The liquid storage pool is located between the two traveling tracks (3) and at the bottom of the U-shaped shunt pipe (16). Cleaning nozzles (18) are fixedly installed at both bottom ends of the U-shaped shunt pipe (16). Two symmetrically arranged flow blocking inclined plates (19) are fixedly installed on the top of the transport vehicle (4). The two cleaning nozzles (18) are both inclined and respectively face the two flow blocking inclined plates (19).

4. A brazing device for an automotive intercooler core according to claim 1, characterized in that The assembly and disassembly mechanism comprises an assembly and disassembly box (20) fixedly mounted inside the processing tunnel (2), a plurality of linear guide rails (21) fixedly mounted inside the assembly and disassembly box (20), the plurality of linear guide rails (21) being respectively located on both sides of the interior of the assembly and disassembly box (20), the tops of the linear guide rails (21) being driven and mounted with electric sliders (22), the tops of the plurality of electric sliders (22) located on the same side being fixedly mounted with a same support plate (23), the tops of the support plates (23) being fixedly mounted with two vertical frames (24), Two symmetrically arranged horizontal frames (25) are fixedly mounted on the side walls of the vertical frame (24); an electric slide rail (26) is fixedly mounted on one end of the horizontal frames (25) on both sides that are close to each other; a micro-grip (27) adapted to the soldering frame (14) is driven and mounted on one side of the electric slide rail (26); the two micro-grips (27) on the same vertical frame (24) are symmetrically arranged; and a hot-melt fixing unit for hot-melt fixing the soldering frame (14) is provided on the top of the disassembly and assembly box (20).

5. A brazing device for an automotive intercooler core according to claim 4, characterized in that, The hot melt fixing unit includes a receiving groove (28) fixedly mounted on the top of the assembly and disassembly box (20), a receiving electric push rod (29) fixedly mounted on the top of the receiving groove (28), a telescopic end of the receiving electric push rod (29) extending to the inside of the receiving groove (28) and the assembly and disassembly box (20) and fixedly mounted with an electric heating clamp (30), an electric heating machine (31) fixedly mounted on the top of the assembly and disassembly box (20), the electric heating clamp (30) being electrically connected to the electric heating machine (31), an H-shaped heating rack (32) being clamped on the electric heating clamp (30), and the H-shaped heating rack (32) corresponding to the position of the pre-assembled core (13).

6. The brazing device for an automotive intercooler core according to claim 1, characterized in that, The feeding structure comprises a feeding platform (33) arranged between the vacuum brazing furnace (1) and the processing tunnel (2), a plurality of horizontally arranged long conveying rollers (34) and short conveying rollers (35) are rotatably mounted on the top of the feeding platform (33), and a same feeding grid (36) is placed on the plurality of long conveying rollers (34) and the short conveying rollers (35).

7. A brazing device for an automotive intercooler core according to claim 6, characterized in that, An electric lifting platform (37) is provided inside the loading platform (33), and the telescopic end of the electric lifting platform (37) extends to the inside of the loading grid (36), and the plurality of short conveying rollers (35) are respectively distributed on both sides of the electric lifting platform (37).

8. A brazing device for an automotive intercooler core according to claim 6, characterized in that, A cooling fan (38) is fixedly installed inside the processing tunnel (2). The cooling fan (38) is located on a side of the loading platform (33) facing away from the vacuum brazing furnace (1). The position of the cooling fan (38) corresponds to the position of the pre-assembled core (13).

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