A brazing process for an intercooler core in an automobile

Abstract

The application discloses a brazing process for a middle-cooler core in an automobile and relates to the technical field of brazing furnace equipment manufacturing. The application comprises a bottom plate, the upper end surface of the bottom plate is fixedly connected with a protection structure, the inner cavity of the protection structure is symmetrically and rotationally connected with an adjusting structure along a center line, the middle part of the upper end surface of the bottom plate is symmetrically provided with a shock absorption structure along the center line, the inner cavity of the protection structure is provided with a fixing structure on both sides along the center line, the inner cavity of one side adjacent to each of the two fixing structures is provided with a fixing clamp, the protection structure on the upper end surface of the bottom plate is convenient for installing the adjusting structure during use, the transmission structure is convenient for driving and adjusting the adjusting structure during use, the shock absorption structure on the upper end surface of the bottom plate is convenient for installing and placing the connecting structure during use, the sliding pipe and the spring are convenient for absorbing and storing the pressure of the connecting structure during work, the middle-cooler core is placed during use, and the middle-cooler core is conveniently protected and fixed during use.

Description

Technical Field

[0001] This invention relates to the field of brazing furnace equipment manufacturing technology, and in particular to a brazing process for an automotive intercooler core. Background Technology

[0002] The automotive intercooler is a new type of environmentally friendly and energy-saving product. It is used in conjunction with the car engine and turbocharger. Its working principle is to cool the high-temperature, high-pressure air output by the turbocharger through air-to-air heat exchange, ensuring complete combustion of engine fuel, increasing power, and reducing emissions of gaseous waste and particulate matter, thus meeting certain emission standards.

[0003] Existing brazing equipment places the intercooler core flat, causing liquid to drain from the inner cavity of the equipment during brazing, which affects brazing efficiency. Furthermore, the simple structure of the equipment makes it inconvenient to adjust the brazing angle of the intercooler core, increasing the labor intensity of personnel and affecting work efficiency.

[0004] Therefore, the existing brazing process for automotive intercooler cores cannot meet the needs of actual use, so there is an urgent need for improved technologies to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a brazing process for automotive intercooler core components, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0007] This invention relates to a brazing process for an automotive intercooler core, comprising a base plate, a protective structure fixedly connected to the upper surface of the base plate, an adjustment structure symmetrically rotatably connected to the inner cavity of the protective structure along the center line, a shock-absorbing structure symmetrically arranged in the middle of the upper surface of the base plate along the center line, a connecting structure at the upper end of the shock-absorbing structure, and a fixing structure arranged on both sides of the inner cavity of the protective structure along the center line, with a fixing clamp provided on the upper part of the inner cavity of each adjacent side of the two fixing structures.

[0008] Preferably, the protective structure includes a protective frame fixedly connected to the upper surface of the base plate, a protective motor is provided at the front of the left end face of the protective frame, and a transmission structure is provided at the right end face of the protective frame. The transmission structure includes a pulley symmetrically rotatably connected to the right end face of the protective frame, and a belt is drivingly connected to the outer surfaces of the two pulleys.

[0009] Preferably, the adjusting structure includes two rotating rods two symmetrically rotatingly connected in the front and back inner cavities of the protective frame along the center line of the upper end face of the bottom plate, two outer surfaces of the two rotating rods two are fixedly connected with threaded pipes, the rotating rods two penetrate the shock-absorbing structure, the threaded pipes are oppositely threaded on the outer surfaces, the output end of the protection motor is fixedly connected with the left end face of the rotating rod two in the front via a rotating shaft penetrating the protective frame, and the rotating shafts of the right end faces of the two rotating rods two penetrate the protective frame and are fixedly connected with the left end faces of the two belt pulleys, respectively.

[0010] Preferably, the shock-absorbing structure includes mounting blocks fixedly connected symmetrically along the center line of the upper end face of the bottom plate, the rotating rods two penetrate the mounting blocks and are rotatingly connected, the inner cavities of the two adjacent sides of the mounting blocks are fixedly connected with sliding pipes, the rotating rods two penetrate the sliding pipes and are movably connected, and springs are slidingly sleeved on the middle portions of the outer surfaces of the sliding pipes.

[0011] Preferably, the connecting structure includes sliding blocks symmetrically slidingly connected on the outer surfaces of the sliding pipes, the two ends of one side of the sliding blocks are fixedly connected with the two ends of the springs, the upper end faces of the sliding blocks are fixedly connected with rotating frames, one end of a rotating rod one is rotatingly connected in the inner cavities of the rotating frames, the other end of the rotating rod one is rotatingly connected with the other rotating frame, and the upper end faces of the two adjacent rotating frames are fixedly connected with connecting plates.

[0012] Preferably, the fixing structure includes adjusting plates slidingly connected in the left and right inner cavities of the protective frame along the center line of the bottom plate, the threaded pipes penetrate the adjusting plates and are screw-connected, the upper end faces of the adjusting plates are placed with clamping plates, and the left and right end faces of the adjusting plates are fixedly connected with one end of the lifting structures, and the other end of the lifting structures is fixedly connected with the left and right end faces of the clamping plates.

[0013] Preferably, the lifting structure includes lower mounting blocks fixedly connected on the left and right sides of the adjusting plates, electric telescopic rods fixedly connected with the upper end faces of the lower mounting blocks, and upper mounting blocks fixedly connected with the upper end faces of the electric telescopic rods and the left and right end faces of the clamping plates.

[0014] Preferably, the fixing clamp includes connecting columns fixedly connected in the middle portions of the two ends of one side of the clamping plates, fixing discs rotatingly connected with the ends, away from the clamping plates, of the connecting columns, adjusting holes uniformly arranged on the outer circumferential faces of the fixing discs, protective pads fixedly connected with the ends, away from the connecting columns, of the fixing discs, and anti-skid lines arranged on the ends, away from the fixing discs, of the protective pads.

[0015] A brazing process for an intercooler core of an automobile, characterized in that it comprises the following steps:

[0016] S1: the middle cooler core is placed on the upper part of the connecting structure, at this time, the connecting plate height is reduced due to the large mass of the middle cooler core, at this time, the rotating rod in the rotating cavity of the frame rotates, so that the two sliders are away from each other, so the spring is elongated, the middle cooler core is lowered to absorb the pressure and support the middle cooler core;

[0017] S2: the middle cooler core is fixed, the protection motor is started, the output end of the protection motor rotates, so the rotating rod II rotates, and the threaded pipe rotates, so the two adjusting plates are close to each other, and the two side fixing clamps are fixed to the two side surfaces of the middle cooler core.

[0018] S3: the middle cooler core is brazed, at this time, the middle cooler core is placed in the air, so that the liquid in the core cavity and the residual brazing agent are discharged in time;

[0019] S4: the height of the middle cooler core is adjusted, the lifting structure is started, the electric telescopic rod is elongated, so the height of the upper mounting block is raised, the clamping plate is raised, and the height of the fixing clamp is raised, at this time, the height of the middle cooler core is raised due to the close contact between the two side end faces of the middle cooler core and the protection pad.

[0020] S5: the brazing angle of the middle cooler core is adjusted, the steel pipe is inserted into the adjusting hole in the outer periphery of the fixing disc, at this time, the steel pipe is pushed, so that the fixing disc rotates, when the angle is adjusted to the appropriate angle, the electric telescopic rod is retracted, so that the height of the upper mounting block is reduced, the height of the clamping plate is reduced, and the middle cooler core with the adjusted angle is placed on the upper end of the connecting structure, so that the middle cooler core rotates, and the personnel brazes the middle cooler core.

[0021] The present application has the following advantages:

[0022] 1. The protection structure provided on the upper end face of the bottom plate is convenient to install the adjusting structure in use, and the adjusting structure in the protection structure cavity is convenient to drive and control the displacement of the fixing structure in use, so that the fixing structure is in close contact with the left and right side end faces of the middle cooler core, and the shock absorbing structure on the upper end face of the bottom plate is convenient to install and place the connecting structure in use, and the spring absorbs and stores the pressure in the working of the connecting structure through the sliding pipe, which places the middle cooler core in use and is convenient to protect and fix the middle cooler core in use.

[0023] 2, The present application is provided with the connecting structure on the upper end of the buffer structure, the pressure of the intercooler core is transmitted when the intercooler core is placed, and the intercooler core is supported, so that the intercooler core is hung and placed, the distance between the fixing clamp and the intercooler core is adjusted in use through the fixing structure in the cavity of the protection structure, so that the intercooler core is clamped conveniently, the relative height of the intercooler core is adjusted conveniently through the clamping plate of the lifting structure on the front and back faces of the fixing structure, the intercooler core is clamped in use through the fixing clamp in the cavity of the fixing structure, and the intercooler core is prevented from being damaged due to gravity sliding when the height of the intercooler core is adjusted through the protection pad, so that the personnel use is facilitated and the work efficiency is improved in use.

[0024] Of course, implementing any product of the present application does not necessarily require achieving all the advantages described above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed for the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0026] Figure 1 It is a front view of the structure of the present application.

[0027] Figure 2 It is a right side view of the structure of the present application.

[0028] Figure 3 It is an installation structure diagram of the adjusting structure of the present application.

[0029] Figure 4 It is a half-section structure diagram of the present application.

[0030] Figure 5 It is a structure diagram of the present application Figure 1 in the A area.

[0031] Figure 6 It is a structure diagram of the present application Figure 2 in the B area.

[0032] In the drawings, the components represented by each number are listed as follows:

[0033] 1-base plate, 2-protection structure, 21-protection frame, 22-protection motor, 23-transmission structure, 231-pulley, 232-belt, 3-adjusting structure, 31-rotating rod two, 32-threaded tube, 4-cushioning structure, 41-mounting block, 42-sliding tube, 43-spring, 5-connection structure, 51-sliding block, 52-rotating rod one, 53-rotating frame, 54-connection plate, 6-fixing structure, 61-adjusting plate, 62-lifting structure, 621-lower mounting block, 622-electric telescopic rod, 623-upper mounting block, 63-clamping plate, 7-fixing clamp, 71-connection column, 72-fixing disc, 73-adjusting hole, 74-protection pad. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

[0035] Please refer to Figures 1-6 As shown in the drawings, the embodiment is a brazing process for an automobile intercooler core, which comprises a base plate 1, a protection structure 2 fixedly connected to the upper end surface of the base plate 1, an adjusting structure 3 symmetrically and rotatably connected to the inner cavity of the protection structure 2 along the center line, a cushioning structure 4 symmetrically arranged on the upper end surface of the base plate 1 along the center line, a connection structure 5 arranged on the upper end of the cushioning structure 4, a fixing structure 6 arranged in the inner cavity of the protection structure 2 along the two sides of the center line, and a fixing clamp 7 arranged in the inner cavity of the adjacent side of the two fixing structures 6.

[0036] Preferably, the protection structure 2 comprises a protection frame 21 fixedly connected to the upper end surface of the base plate 1, a protection motor 22 arranged on the left end surface of the front part of the protection frame 21, and a transmission structure 23 arranged on the right end surface of the protection frame 21, wherein the transmission structure 23 comprises pulleys 231 symmetrically and rotatably connected to the right end surface of the protection frame 21, and belts 232 drivingly connected to the outer surfaces of the two pulleys 231.

[0037] Preferably, the adjusting structure 3 comprises two rotating rods 31 symmetrically connected to the front and rear sides of the inner cavity of the protection frame 21 along the center line of the upper end surface of the bottom plate 1, the outer surfaces of the two rotating rods 31 are fixedly connected with threaded pipes 32 in a symmetrical manner, the rotating rods 31 penetrate the shock absorption structure 4, the threaded pipes 32 are threadedly connected in opposite directions, the output end of the protection motor 22 is fixedly connected with the left end surface of the front rotating rod 31 through a rotating shaft penetrating the protection frame 21, and the right end surfaces of the two rotating rods 31 are fixedly connected with the left end surfaces of the two belt pulleys 231 through rotating shafts penetrating the protection frame 21. Through the adjusting structure 3 in the inner cavity of the protection structure 2, the displacement of the fixing structure 6 is driven and controlled in use, so that the fixing structure 6 is attached to the left and right side end surfaces of the intercooler core body, and the intercooler core body is conveniently protected and fixed in use.

[0038] Preferably, the shock absorption structure 4 comprises mounting blocks 41 fixedly connected to the center line of the upper end surface of the bottom plate 1 in a symmetrical manner, the rotating rods 31 penetrate the mounting blocks 41 and are connected in a rotatable manner, the inner cavities of the adjacent sides of the two mounting blocks 41 are fixedly connected with sliding pipes 42, the rotating rods 31 penetrate the sliding pipes 42 and are connected in a movable manner, and springs 43 are slidingly sleeved on the outer surfaces of the sliding pipes 42. Through the shock absorption structure 4 on the upper end surface of the bottom plate 1, the connecting structure 5 is placed in use, and the pressure of the connecting structure 5 in operation is absorbed and stored through the sliding pipes 42 and the springs 43.

[0039] Preferably, the connecting structure 5 comprises sliding blocks 51 symmetrically connected to the outer surfaces of the sliding pipes 42, the two sliding blocks 51 are fixedly connected with the two ends of the springs 43, rotating frames 53 are fixedly connected to the upper end surfaces of the sliding blocks 51, one end of a rotating rod 52 is rotatably connected to the inner cavities of the rotating frames 53, the other end of the rotating rod 52 is rotatably connected with the other rotating frame 53, and connecting plates 54 are fixedly connected to the upper end surfaces of the two adjacent rotating frames 53. Through the connecting structure 5 on the upper end of the shock absorption structure 4, the pressure of the intercooler core body is transmitted and the intercooler core body is supported when the intercooler core body is placed, so that the intercooler core body is hung and placed.

[0040] Preferably, the fixing structure 6 comprises adjusting plates 61 symmetrically connected to the left and right sides of the inner cavity of the protection frame 21 along the center line of the bottom plate 1, the threaded pipes 32 penetrate the adjusting plates 61 and are threadedly connected, clamping plates 63 are placed on the upper end surfaces of the adjusting plates 61, one end of a lifting structure 62 is fixedly connected to the front and rear side end surfaces of the adjusting plates 61, and the other end of the lifting structure 62 is fixedly connected with the front and rear end surfaces of the clamping plate 63. Through the fixing structure 6 in the inner cavity of the protection structure 2, the distance between the fixing clamp 7 and the intercooler core body is adjusted in use, so that the intercooler core body is conveniently clamped.

[0041] Preferably, the lifting structure 62 comprises a lower mounting block 621 fixedly connected to the front and rear sides of the adjusting plate 61, the upper end surface of the lower mounting block 621 is fixedly connected with an electric telescopic rod 622, the upper end surface of the electric telescopic rod 622 is fixedly connected with an upper mounting block 623, and the upper mounting block 623 is fixedly connected with the front and rear end surfaces of the clamping plate 63. Through the lifting structure 62 on the front and rear sides of the fixing structure 6, the relative height of the intercooler core body can be conveniently adjusted by the clamping plate 63 in use.

[0042] Preferably, the fixing clamp 7 comprises a connecting column 71 fixedly connected to the middle part of both ends of one side connected with the clamping plate 63, and a fixing disc 72 is rotatably connected to one end of the connecting column 71 away from the clamping plate 63. The outer circumferential surface of the fixing disc 72 is uniformly provided with adjusting holes 73, and the one end of the fixing disc 72 away from the connecting column 71 is fixedly connected with a protective pad 74. The one end of the protective pad 74 away from the fixing disc 72 is provided with anti-skid lines. Through the fixing clamp 7 in the inner cavity of the fixing structure 6, the intercooler core body is clamped in use. At the same time, through the protective pad 74, when the height of the intercooler core body is adjusted, the intercooler core body is prevented from being damaged due to gravity sliding, thereby conveniently improving the work efficiency of personnel in use.

[0043] A brazing process for an intercooler core of an automobile, comprising the following steps:

[0044] S1: placing the intercooler core, the core is placed on the upper part of the connecting structure 5. At this time, since the intercooler core has a large mass, the height of the connecting plate 54 is lowered. At this time, the inner cavity rotating rod one 52 of the rotating frame 53 is rotated, so that the two sliding blocks 51 are away from each other, and the spring 43 is elongated. The intercooler core is lowered to absorb the pressure and support the intercooler core;

[0045] S2: fixing the intercooler core, starting the protective motor 22, and rotating the output end of the protective motor 22. Therefore, the rotating rod two 31 is rotated, and the threaded pipe 32 is rotated. Therefore, the two adjusting plates 61 are close to each other, and the two fixing clamps 7 on the sides are fixedly connected with the two side surfaces of the intercooler core.

[0046] S3: brazing the intercooler core. At this time, since the intercooler core is placed in suspension, the accumulated liquid in the core cavity and the residual brazing agent are promptly discharged.

[0047] S4: adjusting the height of the intercooler core, starting the lifting structure 62, and elongating the electric telescopic rod 622. Therefore, the height of the upper mounting block 623 is raised, the clamping plate 63 is raised, and the height of the fixing clamp 7 is raised. At this time, since the two side end surfaces of the intercooler core are in contact with the protective pad 74, the height of the intercooler core is raised.

[0048] S5: adjusting the brazing angle of the intercooler core, inserting the steel pipe into the adjusting hole 73 on the outer periphery of the fixing disc 72, at this time, the steel pipe is pushed, so that the fixing disc 72 rotates, when the angle is adjusted to the appropriate angle, the electric telescopic rod 622 is retracted, so that the upper mounting block 623 is lowered in height, so the clamping plate 63 is lowered in height, so that the intercooler core after the angle adjustment is placed on the upper end of the connecting structure 5, so that the intercooler core rotates, and then personnel can conveniently braze the intercooler core.

[0049] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

[0050] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provision", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0051] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A brazing process for an automotive intercooler core, comprising a base plate (1), characterized in that; The upper end face of the base plate (1) is fixedly connected to a protective structure (2). The inner cavity of the protective structure (2) is symmetrically connected to an adjustment structure (3) along the center line. The middle part of the upper end face of the base plate (1) is symmetrically provided with a shock-absorbing structure (4) along the center line. The upper end of the shock-absorbing structure (4) is provided with a connecting structure (5). The inner cavity of the protective structure (2) is provided with a fixing structure (6) on both sides of the center line. The upper part of the inner cavity of the two fixing structures (6) on adjacent sides is provided with a fixing clamp (7). The protective structure (2) includes a protective frame (21) fixedly connected to the upper end face of the base plate (1). The front of the left end face of the protective frame (21) is provided with a protective motor (22). The right end face of the protective frame (21) is provided with a transmission structure (23). Structure (23) includes a pulley (231) symmetrically rotatably connected to the right end of the protective frame (21), and a belt (232) drivingly connected to the outer surfaces of the two pulleys (231). The adjustment structure (3) includes two rotating rods (31) symmetrically rotatably connected to the front and rear sides of the inner cavity of the protective frame (21) along the center line of the upper end face of the base plate (1). Threaded tubes (32) are symmetrically fixedly connected to the outer surfaces of the two rotating rods (31). The rotating rods (31) penetrate the shock-absorbing structure (4). The threads on the outer surfaces of the threaded tubes (32) rotate in opposite directions. The output end of the protective motor (22) is fixedly connected to the rotating shaft penetrating the protective frame (21) on the left end face of the front rotating rods (31). The right end face rotation shaft passes through the protective frame (21) and is fixedly connected to the left end face of the two pulleys (231); the fixed structure (6) includes an adjustment plate (61) that is slidably connected to the left and right sides of the inner cavity of the protective frame (21) along the center line of the base plate (1), a threaded tube (32) passes through the adjustment plate (61) and is threadedly connected, a clamping plate (63) is placed on the upper end face of the adjustment plate (61), and one end of the lifting structure (62) is fixedly connected to the front and rear end faces of the adjustment plate (61), and the other end of the lifting structure (62) is fixedly connected to the front and rear end faces of the clamping plate (63); the lifting structure (62) includes a lower mounting block (621) fixedly connected to the front and rear sides of the adjustment plate (61), and the lower mounting block (621) is fixedly connected to the front and rear sides of the adjustment plate (61). 1) An electric telescopic rod (622) is fixedly connected to the upper end face. An upper mounting block (623) is fixedly connected to the upper end face of the electric telescopic rod (622). The upper mounting block (623) is fixedly connected to the front and rear end faces of the clamping plate (63). The fixing clamp (7) includes a connecting column (71) fixedly connected to the middle of the two ends of the side where the two clamping plates (63) are connected. A fixing plate (72) is rotatably connected to the end of the connecting column (71) away from the clamping plate (63). Adjustment holes (73) are evenly opened on the outer circumference of the fixing plate (72). A protective pad (74) is fixedly connected to the end of the fixing plate (72) away from the connecting column (71). Anti-slip texture is opened on the end of the protective pad (74) away from the fixing plate (72). A brazing process for an automotive intercooler core includes the following steps: S1: Place the intercooler core. The core is placed on the upper part of the connecting structure (5). At this time, because the mass of the intercooler core is large, the height of the connecting plate (54) is reduced. At this time, the inner cavity of the rotating frame (53) rotates (52), which causes the two sliders (51) to move away from each other. Therefore, the spring (43) extends, which absorbs the pressure and supports the intercooler core as it descends. S2: Fix the intercooler core and start the protection motor (22). The output end of the protection motor (22) rotates, so the rotating rod (31) rotates, which in turn causes the threaded tube (32) to rotate. So the two adjusting plates (61) move closer to each other, which in turn causes the two fixing clamps (7) on both sides to fit and fix to the two sides of the intercooler core. S3: Brazing the intercooler core. Since the intercooler core is suspended in the air, the liquid and residual brazing flux in the core cavity are drained in time. S4: Adjust the placement height of the intercooler core and start the lifting structure (62) to extend the electric telescopic rod (622), so the height of the upper mounting block (623) rises, so the clamping plate (63) rises, and then the height of the fixing clamp (7) rises. At this time, since the two end faces of the intercooler core are in contact with the protective pad (74), the height of the intercooler core rises. S5: Adjust the brazing angle of the intercooler core and insert the steel pipe into the adjustment hole (73) on the upper part of the outer periphery of the fixed plate (72). Push the steel pipe to make the fixed plate (72) rotate. When the angle is adjusted to a suitable angle, the electric telescopic rod (622) retracts, so the height of the upper mounting block (623) is reduced, so the height of the clamping plate (63) is reduced, so the intercooler core after the angle adjustment is placed on the upper end of the connecting structure (5), so the intercooler core rotates, which makes it convenient for personnel to braze the intercooler core.

2. The brazing process for an automotive intercooler core according to claim 1, characterized in that, The shock-absorbing structure (4) includes mounting blocks (41) symmetrically fixedly connected along the center line of the upper end face of the base plate (1), a second rotating rod (31) passing through the mounting blocks (41) and rotatably connected, a sliding tube (42) fixedly connected to the inner cavity of the two mounting blocks (41) on adjacent sides, the second rotating rod (31) passing through the sliding tube (42) and movably connected, and a spring (43) slidably sleeved in the middle of the outer surface of the sliding tube (42).

3. The brazing process for an automotive intercooler core according to claim 2, characterized in that, The connection structure (5) includes sliders (51) symmetrically slidably connected to the outer surface of the sliding tube (42). The two ends of the two sliders (51) are fixedly connected to the two ends of the spring (43) on the connected side. A rotating frame (53) is fixedly connected to the upper end of the slider (51). One end of a rotating rod (52) is rotatably connected to the inner cavity of the rotating frame (53). The other end of the rotating rod (52) is rotatably connected to another rotating frame (53). A connecting plate (54) is fixedly connected to the upper end of the two adjacent rotating frames (53).

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