A plate-fin heat sink welding quality detection device

Abstract

The present invention discloses a welding quality detection device for a plate-fin radiator, belonging to the field of welding quality detection devices. It includes an inclined foundation pit and a radiator body containing partitions and fins. A detection box is arranged in the foundation pit. Solenoid valves and semi-circular flow guiding plates are arranged at both ends of the detection box. A central column, a circulating water impact assembly, a turbulence simulation assembly, a bending assembly, and a detection tower are arranged in the detection box. By setting the circulating water impact assembly and the turbulence simulation assembly, self-circulation of water flow is realized. The radiator body is driven to swing horizontally and longitudinally by multiple sets of reciprocating mechanisms to simulate the wading condition. By setting the bending assembly, when the screw drives the synchronous actuating plate to act, the same thrust is applied to the partition by the synchronous spring and two bending operations in the positive and negative directions are carried out. By setting the detection tower, using a low-sensitivity reflective laser sensor, interference from the fins can be filtered and defect positioning for abnormal deformation of the partition can be achieved, realizing efficient screening and precise positioning of welding defects.

Description

Technical Field

[0001] The present invention relates to the technical field of welding quality detection equipment, and particularly relates to a welding quality detection equipment for plate-fin heat exchangers. Background Art

[0002] A plate-fin heat exchanger is composed of partition plates, fins, gaskets, and flow guide plates after being processed by a welding process. When used for heat dissipation, it is also called a plate-fin heat exchanger. When a plate-fin heat exchanger is used as an automotive intercooler, a welding quality detection equipment is required to detect its welds to ensure the quality of the plate-fin heat exchanger;

[0003] According to the conclusion in the article "Research on the Local Vibration Characteristics of Complex Structures in Water" (Yang Yiren and Zhang Jiye, 1997, Journal of Southwest Jiaotong University, pp. 98-103), it can be obtained that when a plate-like component vibrates in still water, the additional mass and damping of water have a greater impact on the local vibration of the structure than on the overall vibration;

[0004] Based on the above principle, when an automobile is driving on a wading section, if the welding quality of the joints between the partition plates and the fins of the plate-fin heat exchanger is poor under the action of accumulated water turbulence, fractures are likely to occur. Among them, the fracture of the solder joints at the partition plates belongs to the fracture of the main structure, which will cause the plate-fin heat exchanger to be unusable;

[0005] The existing welding quality detection equipment for plate-fin heat exchangers can only detect in the air. However, the vibration characteristics of the plate-fin heat exchanger in the air are sensitive to boundary conditions, that is, the vibration effects on the four sides of the plate-fin heat exchanger are greater than those on each partition plate, which is different from the stress distribution in water. Therefore, the existing welding quality detection equipment for plate-fin heat exchangers cannot detect the potential hazards that may cause this type of fracture;

[0006] For this reason, a welding quality detection equipment for plate-fin heat exchangers is proposed, which detects the welding quality of the plate-fin heat exchanger after wading use through a destructive detection method. Summary of the Invention

[0007] The purpose of the present invention is to solve the x problem of the welding quality detection equipment in the prior art, and to propose a welding quality detection equipment for plate-fin heat exchangers.

[0008] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0009] A welding quality detection device for a plate-fin radiator, comprising an inclined foundation pit and a radiator body containing partitions and fins. A detection box is arranged in the foundation pit. Solenoid valves and semi-circular flow deflectors are arranged at both ends of the detection box. A central column is arranged in the center of the detection box. Two circulating water impact components are oppositely arranged between the outer side wall of the central column and the inner side wall of the detection box. The output end of the circulating water impact component is provided with a turbulence simulation component. Two bending components are arranged inside the turbulence simulation component. A detection tower is arranged on the side of the radiator body away from the turbulence simulation component.

[0010] The turbulence simulation component includes four reciprocating mechanisms in two groups. The reciprocating mechanisms are arranged inside the detection box and the central column. The output end of the reciprocating mechanism is provided with a universal joint. The radiator body is located between the universal joints.

[0011] The bending component includes a fixed frame aligned with both ends of the partition. A support column is arranged at the bottom of the fixed frame. A drag reduction shell is arranged outside the fixed frame. A detection push plate is arranged on the side of the fixed frame close to the detection tower.

[0012] Preferably, the circulating water impact component includes a mounting wall. Both ends of the mounting wall are fixedly connected to the central column and the detection box respectively. A tubular turbine is fixedly installed on one side of the mounting wall. A confluence pipeline is opened on the other side of the mounting wall. The output end of the confluence pipeline matches the inner diameter of the tubular turbine to improve the working efficiency of the tubular turbine.

[0013] Preferably, the reciprocating mechanism includes a fixed plate. A reciprocating motor is fixedly connected to one side of the fixed plate. A turntable is rotatably connected to the other side of the fixed plate. The back of the turntable is fixedly connected to the reciprocating motor. A connecting rod is fixedly connected to the surface of the turntable. One end of the connecting rod away from the turntable is movably connected to a telescopic rod. One end of the telescopic rod away from the connecting rod is fixedly connected to a small rotating seat.

[0014] Preferably, a universal joint is rotatably connected to the surface of the small rotating seat. One end of the universal joint close to the radiator body is fixedly connected to a connecting ear. The connecting ear is fixedly connected to the radiator body.

[0015] Preferably, a waterproof push rod is fixedly installed inside the fixed frame. A plurality of sliding holes are opened on the side of the fixed frame facing the radiator body. Limit sliding rods are slidably connected in the sliding holes.

[0016] Preferably, one side of the detection push plate facing the fixed frame is fixedly connected to the output end of the waterproof push rod and the limit sliding rod. A bending motor protected by a housing is fixedly installed at the top end of the detection push plate. A lead screw, a strip-shaped slider, and four limit vertical rods in two groups are arranged on the side of the detection push plate away from the fixed frame. Both ends of the limit vertical rod are fixedly connected to the upper and lower ends of the detection push plate. The lead screw is located at the center of a group of limit vertical rods close to the detection push plate. The top end of the lead screw passes through the top end of the detection push plate and is fixedly connected to the bending motor, and the bottom end of the lead screw is rotatably connected to the bottom of the detection push plate.

[0017] Preferably, the center of the strip-shaped slider is threadedly connected to the lead screw. The strip-shaped slider is slidably connected to a group of limit vertical rods close to the detection push plate. A plurality of synchronous actuating plates are fixedly connected to the side of the strip-shaped slider away from the detection push plate. The synchronous actuating plates are slidably connected to a group of limit vertical rods away from the detection push plate. A synchronous spring is arranged between the synchronous actuating plates, and a plurality of bending blocks are arranged between the synchronous springs.

[0018] Preferably, a plurality of synchronous springs are provided, respectively located below the top synchronous actuating plate, above the bottom synchronous actuating plate, and on the upper and lower sides of other synchronous actuating plates, for providing the same driving force to the bending blocks.

[0019] Preferably, the upper and lower ends of the bending block are in contact with the synchronous spring. One end of the bending rod away from the detection push plate is fixedly connected to a puncture cone for piercing the fins, so that the bending rod can smoothly enter between the partitions.

[0020] Preferably, the detection tower is aligned with the center of the radiator body. A plurality of detection grooves corresponding one by one to the abnormal bending of the partitions are opened inside the detection tower. An arc-shaped glass plate is fixedly installed on the side of the detection groove facing the radiator body, and a reflective laser sensor is fixedly installed in the detection groove.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. By setting a circulating water impact component and a turbulence simulation component, while realizing the self-circulation of water flow through a counter-flow water turbine arranged in reverse and impacting the radiator body through the water flow, through the alternating actions of multiple groups of reciprocating mechanisms, the radiator body can be driven to swing longitudinally and horizontally, simulating the complex fluid environment encountered during actual wading, enabling the radiator body to withstand alternating impact loads, and fully exposing the fatigue defects at the welded parts of the partitions.

[0023] 2. By providing a bending assembly in the present invention, through the combined use of a lead screw, a synchronous actuating plate, and a synchronous spring, the displacement synchronization control of all bending blocks can be achieved. In particular, the hierarchically arranged synchronous springs can ensure that each partition board bears uniform thrust, and the reliability of the welding points in different force directions can be detected through two actions in opposite directions.

[0024] 3. By providing a detection tower in the present invention, taking advantage of the fact that when under the same force, the bending amplitude of a partition board with poor welding is greater than that of a normal partition board, the abnormally deformed partition board is detected by a reflective laser sensor, realizing the precise positioning of the defect location. By providing a reflective laser sensor with low sensitivity, the interference of fins can be effectively avoided, improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 FIG. is a schematic diagram of the overall structure of a plate-fin heat sink welding quality detection device proposed by the present invention;

[0026] Figure 2 FIG. is a cross-sectional view of the internal structure of a detection box in a plate-fin heat sink welding quality detection device proposed by the present invention;

[0027] Figure 3 FIG. is a schematic diagram of the structure of a bending assembly in a plate-fin heat sink welding quality detection device proposed by the present invention in a standby state;

[0028] Figure 4 FIG. is a schematic diagram of the structure of a bending assembly in a plate-fin heat sink welding quality detection device proposed by the present invention when entering the heat sink body;

[0029] Figure 5 FIG. is a structural assembly drawing of a reciprocating mechanism and a universal joint in a plate-fin heat sink welding quality detection device proposed by the present invention;

[0030] Figure 6 FIG. is a structural assembly drawing of a bending assembly in a plate-fin heat sink welding quality detection device proposed by the present invention;

[0031] Figure 7 FIG. is a structural assembly drawing of a detection push plate in a plate-fin heat sink welding quality detection device proposed by the present invention;

[0032] Figure 8 FIG. is a cross-sectional view of the structure of a bending assembly in a plate-fin heat sink welding quality detection device proposed by the present invention when bending downward;

[0033] Figure 9 FIG. is a cross-sectional view of the structure of a bending assembly in a plate-fin heat sink welding quality detection device proposed by the present invention when bending upward;

[0034] Figure 10Internal structure sectional view of the detection tower in a fin - type radiator welding quality detection device proposed by the present invention;

[0035] Figure 11 is Figure 10 the enlarged view of part A in

[0036] In the figure: 1, foundation pit; 2, radiator body; 201, partition board; 202, fin; 3, detection box; 4, solenoid valve; 5, flow - guiding plate; 6, central column; 7, detection tower; 8, universal joint; 9, fixed frame; 10, resistance - reducing shell; 11, detection push - plate; 12, installation wall; 13, tubular turbine; 14, confluence pipeline; 15, fixed plate; 16, reciprocating motor; 17, turntable; 18, connecting rod; 19, telescopic rod; 20, small rotating seat; 21, connecting ear; 22, waterproof push - rod; 23, limiting slide bar; 24, bending motor; 25, limiting vertical rod; 26, lead screw; 27, strip - shaped slider; 28, synchronous actuating plate; 29, synchronous spring; 30, bending block; 31, bending rod; 32, piercing cone; 33, detection groove; 34, arc - shaped glass plate; 35, reflective laser sensor. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and 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, so it cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0040] Example, refer to Figures 1 to 11 , a welding quality detection device for a plate-fin radiator, including an inclined foundation pit 1 and a radiator body 2 containing a partition plate 201 and fins 202. A detection box 3 is arranged in the foundation pit 1. Solenoid valves 4 and semi-circular diversion plates 5 are arranged at both ends of the detection box 3 for supporting water inlet, outlet and water circulation. A strip-shaped central column 6 is arranged at the center of the detection box 3, and a channel for water flow circulation is separated by the central column 6. Two circulating water impact components with opposite output directions are arranged opposite to each other between the outer side wall of the central column 6 and the inner side wall of the detection box 3. The output end of the circulating water impact component is provided with a turbulence simulation component;

[0041] The turbulence simulation component includes four reciprocating mechanisms in pairs. The reciprocating mechanisms are arranged inside the detection box 3 and the central column 6. A universal joint 8 is arranged at the output end of the reciprocating mechanism. The radiator body 2 is located between the universal joints 8;

[0042] Two bending components are arranged inside the turbulence simulation component. The bending component includes a fixed frame 9. The fixed frame 9 is aligned with both ends of the partition plate 201 in the radiator body 2. A support column connected to the bottom of the detection box 3 is arranged at the bottom of the fixed frame 9. A resistance reduction shell 10 is arranged outside the fixed frame 9. A detection push plate 11 is arranged on one side of the fixed frame 9 close to the detection tower;

[0043] A detection tower 7 is arranged on one side of the radiator body 2 away from the turbulence simulation component.

[0044] It should be noted that: the solenoid valve 4 at the higher position is the input end, the solenoid valve 4 at the lower position is the output end. The solenoid valve 4 at the higher position needs to be fixedly connected to the water delivery pipeline in the prior art, and the solenoid valve 4 at the lower position needs to be fixedly connected to the drainage pipeline in the prior art.

[0045] Furthermore, the circulating water impact component includes a mounting wall 12. Both ends of the mounting wall 12 are fixedly connected to the central column 6 and the detection box 3 respectively. A tubular turbine 13 is fixedly installed on one side of the mounting wall 12. A confluence pipeline 14 is opened on the other side of the mounting wall 12. The output end of the confluence pipeline 14 matches the inner diameter of the tubular turbine 13 to improve the working efficiency of the tubular turbine 13;

[0046] Further, the reciprocating mechanism includes a fixing plate 15. On one side of the fixing plate 15, a reciprocating motor 16 is fixedly connected. On the other side of the fixing plate 15, a turntable 17 is rotatably connected. The back surface of the turntable 17 is fixedly connected to the reciprocating motor 16. On the surface of the turntable 17, a connecting rod 18 is fixedly connected. One end of the connecting rod 18 away from the turntable 17 is movably connected to a telescopic rod 19. One end of the telescopic rod 19 away from the connecting rod 18 is fixedly connected to a small rotating seat 20. On the surface of the small rotating seat 20, a universal joint 8 is rotatably connected. One end of the universal joint 8 close to the radiator body 2 is fixedly connected to a connecting ear 21. The connecting ear 21 is fixedly connected to the radiator body 2;

[0047] The advantage of the above further arrangement is that the cross-flow water turbine 13 arranged in reverse realizes the self-circulation of water flow. Through the alternating actions of multiple sets of reciprocating mechanisms, the radiator body 2 can be driven to swing longitudinally and horizontally, simulating the complex fluid environment encountered by real wading equipment, enabling the radiator body 2 to bear the alternating impact loads, and fully exposing the fatigue defects at the welded parts of the partition plate 201.

[0048] Further, a waterproof push rod 22 is fixedly installed in the fixing frame 9. On the side of the fixing frame 9 facing the radiator body 2, a plurality of sliding holes are opened. In the sliding holes, a limiting sliding rod 23 is slidably connected;

[0049] Further, on the side of the detection push plate 11 facing the fixing frame 9, it is fixedly connected to the output end of the waterproof push rod 22 and the limiting sliding rod 23. At the top of the detection push plate 11, a bending motor 24 protected by a housing is fixedly installed. On the side of the detection push plate 11 away from the fixing frame 9, there are a lead screw 26, a strip-shaped slider 27, and four limiting vertical rods 25 in two groups. The two ends of the limiting vertical rods 25 are respectively fixedly connected to the upper and lower ends of the detection push plate 11. The lead screw 26 is located at the center of a group of limiting vertical rods 25 close to the detection push plate 11. The top end of the lead screw 26 passes through the top end of the detection push plate 11 and is fixedly connected to the bending motor 24. The bottom end of the lead screw 26 is rotatably connected to the bottom of the detection push plate 11;

[0050] Further, the center of the strip-shaped slider 27 is threadedly connected to the lead screw 26. The strip-shaped slider 27 is slidably connected to a group of limiting vertical rods 25 close to the detection push plate 11. A plurality of synchronous actuating plates 28 are fixedly connected to the side of the strip-shaped slider 27 away from the detection push plate 11. The synchronous actuating plates 28 are slidably connected to a group of limiting vertical rods 25 away from the detection push plate 11. A synchronous spring 29 is arranged between the synchronous actuating plates 28. A plurality of synchronous springs 29 are provided, respectively located below the top synchronous actuating plate 2), above the bottom synchronous actuating plate 28, and on the upper and lower sides of each other synchronous actuating plate 28, for providing the same driving force to the bending block 30. The upper and lower ends of the bending block 30 are in contact with the synchronous spring 29. One end of the bending block 30 away from the detection push plate 11 is fixedly connected to a bending rod 31. One end of the bending rod 31 away from the bending block 30 is fixedly connected to a piercing cone 32 for piercing the fins 202, so that the bending rod 31 can smoothly enter between the partitions 201;

[0051] The advantage of the above further improvement is that through the combined use of the lead screw 26, the synchronous actuating plates 28 and the synchronous spring 29, the displacement synchronous control of all the bending blocks 30 can be realized. In particular, the synchronously arranged synchronous springs 29 can ensure that the partitions 201 bear uniform thrust, and the reliability of the welding points in different force directions can be detected through two opposite actions.

[0052] Further, the detection tower 7 is aligned with the center of the radiator body 2. A plurality of detection slots 33 corresponding one by one to the abnormal bending of the partitions 201 are opened inside the detection tower 7. An arc-shaped glass plate 34 is fixedly installed on the side of the detection slot 33 facing the radiator body 2. A low-sensitivity reflective laser sensor 35 is fixedly installed in the detection slot 33;

[0053] The advantage of the above further improvement is that by using the characteristic that when under the same force, the bending amplitude of the partition 201 with poor welding is greater than that of the normal partition 201, the abnormal deformed partition 201 is detected by the reflective laser sensor 35, realizing the precise positioning of the defect position. By setting the low-sensitivity reflective laser sensor 35, the interference of the fins 202 can be effectively avoided, improving the detection accuracy.

[0054] When the present invention is in use, the tester enters the detection box 3 to close the air inlets of the two radiator bodies 2, and then installs them in the corresponding turbulent flow simulation components through the connecting ears 21 respectively. After the tester evacuates, the industrial control computer in the prior art is operated to regularly open the solenoid valve 4 located at a high position, so that the water flow in the water delivery pipe enters the detection box 3. After the solenoid valve 4 is regularly closed, the water surface height in the detection box 3 is higher than that of the radiator body 2. Then the industrial control computer turns on all the cross-flow water turbines 13 and the reciprocating motors 16 to simulate the water environment;

[0055] When simulating the water-related environment, water flows into the tubular turbine 13 from the confluence pipeline 14 and is output. The tubular turbine 13 drives the water to circulate in the detection box 3 in the reverse setting, and at the same time impacts the radiator body 2. The action of the turbulence simulation component simulates turbulence, causing fatigue at the welded joints of the partition plate 201, thus realizing the function of simulating the water-related environment. The turbulence simulation component alternately performs the following two sets of actions:

[0056] Action group one: The two reciprocating motors 16 at the top drive the corresponding turntables 17 to rotate synchronously. The turntables 17 drive the connecting rods 18 to rotate, pulling the telescopic rods 19 to move horizontally towards the mounting wall 12, and pulling the top of the radiator body 2 from both ends towards the mounting wall 12 horizontally. The working process of the above reciprocating mechanism will not be elaborated below. Then, the two reciprocating motors 16 at the bottom are started, and the radiator body 2 is pulled towards the mounting wall 12 horizontally through the two reciprocating components at the bottom. At the same time, the reciprocating components at the top are reset, thus driving the radiator body 2 to swing longitudinally. When the radiator body 2 swings longitudinally, all the universal joints 8 rotate within the small rotating seats 20 to support this set of actions.

[0057] Action group two: The reciprocating components on one side and the reciprocating components on the other side act alternately, driving the radiator body 2 to swing horizontally. When the radiator body 2 swings horizontally, this set of actions is supported by the rotation of the universal joints 8.

[0058] After the turbulence simulation component works for a certain period of time, it resets and is locked by the self-locking property of the reciprocating motor 16. Then, the waterproof push rod 22 extends, pushing the detection push plate 11 to slide along the limit slide rod 23 towards the radiator body 2 within the fixed frame 9. During the sliding process, the piercing cone 32 pierces and squeezes the fins 202 around, enabling the bending rod 31 to enter between the partition plates 201 to support the welding quality detection;

[0059] When performing the welding quality detection, all the bending motors 24 drive the lead screws 26 to rotate synchronously, driving the strip-shaped sliders 27 and the synchronous actuation plates 28 to slide and rise synchronously along the limit vertical rods 25. During the rising process of the synchronous actuation plates 28, all the bending blocks 30 are simultaneously squeezed from the bottom through the synchronous springs 29, and all the corresponding partition plates 201 are bent simultaneously through the bending rods 31. Then, the detection tower 7 starts to work, and the presence or absence of objects is checked through the reflective laser sensor 35. Since the sensitivity of the reflective laser sensor 35 is low, the detection process will not be interfered by the thin fin-shaped fins 202. At this time, if there are welding quality defects at both ends of the partition plate 201, the degree of bending will be greater than that of the normal partition plate 201, causing the corresponding reflective laser sensor 35 to detect the presence of objects and output signals, so that the position of the welding quality defect can be quickly and accurately detected. After the detection is completed, the detection tower 7 stands by;

[0060] Subsequently, all the bending motors 24 synchronously drive the lead screws 26 to rotate in the reverse direction, causing the strip-shaped sliders 27 to slide downward. The synchronous springs 29 simultaneously squeeze all the bending blocks 30 from the top, and all the partitions 201 are bent in the reverse direction. Then, the detection tower 7 is powered on again for detection, achieving the function of quickly detecting poor welding quality and locating the position where poor welding quality occurs. Furthermore, the welding quality of the radiator body 2 after wading use can be detected;

[0061] After the detection is completed, the valve at the lower position is opened, and the water in the detection box 3 flows along the bottom of the detection box 3 to the valve at the lower position and is discharged from the detection box 3 due to the inclined setting of the foundation pit 1.

[0062] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A welding quality detection device for a plate-fin radiator, comprising an inclined foundation pit (1) and a radiator body (2) containing partition plates (201) and fins (202), characterized in that, A detection box (3) is arranged in the foundation pit (1). Solenoid valves (4) and semi-circular flow guide plates (5) are arranged at both ends of the detection box (3). A central column (6) is arranged at the center of the detection box (3). Two circulating water impact components are oppositely arranged between the outer side wall of the central column (6) and the inner side wall of the detection box (3). The output end of the circulating water impact component is provided with a turbulence simulation component. Two bending components are arranged inside the turbulence simulation component. A detection tower (7) is arranged on one side of the radiator body (2) away from the turbulence simulation component; The turbulence simulation component includes four reciprocating mechanisms in two groups. The reciprocating mechanisms are arranged inside the detection box (3) and the central column (6). A universal joint (8) is arranged at the output end of the reciprocating mechanism. The radiator body (2) is located between the universal joints (8); The bending component includes a fixed frame (9) aligned with both ends of a partition plate (201). A support column is arranged at the bottom of the fixed frame (9). A drag reduction shell (10) is arranged outside the fixed frame (9). A detection push plate (11) is arranged on one side of the fixed frame (9) close to the detection tower; A waterproof push rod (22) is fixedly installed inside the fixed frame (9). A plurality of sliding holes are formed on one side of the fixed frame (9) facing the radiator body (2). A limiting sliding rod (23) is slidably connected inside the sliding hole; One side of the detection push plate (11) facing the fixed frame (9) is fixedly connected to the output end of the waterproof push rod (22) and the limiting sliding rod (23). A bending motor (24) protected by a housing is fixedly installed at the top of the detection push plate (11). A lead screw (26), a strip-shaped slider (27) and four limiting vertical rods (25) in two groups are arranged on one side of the detection push plate (11) away from the fixed frame (9). Both ends of the limiting vertical rod (25) are fixedly connected to the upper and lower ends of the detection push plate (11). The lead screw (26) is located at the center of a group of limiting vertical rods (25) close to the detection push plate (11). The top of the lead screw (26) passes through the top of the detection push plate (11) and is fixedly connected to the bending motor (24). The bottom of the lead screw (26) is rotatably connected to the bottom of the detection push plate (11); The center of the strip-shaped slider (27) is threadedly connected to the lead screw (26). The strip-shaped slider (27) is slidably connected to a group of limiting vertical rods (25) close to the detection push plate (11). A plurality of synchronous actuating plates (28) are fixedly connected to one side of the strip-shaped slider (27) away from the detection push plate (11). The synchronous actuating plates (28) are slidably connected to a group of limiting vertical rods (25) away from the detection push plate (11). A synchronous spring (29) is arranged between the synchronous actuating plates (28). A plurality of bending blocks (30) are arranged between the synchronous springs (29); The upper and lower ends of the bending block (30) are in contact with the synchronous spring (29). One end of the bending block (30) away from the detection push plate (11) is fixedly connected to a bending rod (31). One end of the bending rod (31) away from the bending block (30) is fixedly connected to a piercing cone (32) for piercing the fins (202), so that the bending rod (31) can smoothly enter between the partitions (201).

2. The welding quality detection device for a plate-fin heat sink according to claim 1, characterized in that, The circulating water impact assembly includes an installation wall (12). The two ends of the installation wall (12) are respectively fixedly connected to the central column (6) and the detection box (3). A tubular turbine (13) is fixedly installed on one side of the installation wall (12). A confluence pipeline (14) is provided on the other side of the installation wall (12). The output end of the confluence pipeline (14) matches the inner diameter of the tubular turbine (13) to improve the working efficiency of the tubular turbine (13).

3. The welding quality detection device for a plate-fin heat sink according to claim 1, wherein, The reciprocating mechanism includes a fixing plate (15). A reciprocating motor (16) is fixedly connected to one side of the fixing plate (15). A turntable (17) is rotatably connected to the other side of the fixing plate (15). The back of the turntable (17) is fixedly connected to the reciprocating motor (16). A connecting rod (18) is fixedly connected to the surface of the turntable (17). One end of the connecting rod (18) away from the turntable (17) is movably connected to a telescopic rod (19). One end of the telescopic rod (19) away from the connecting rod (18) is fixedly connected to a small rotating seat (20).

4. The welding quality detection device for a plate-fin heat sink according to claim 3, wherein A universal joint (8) is rotatably connected to the surface of the small rotating seat (20). One end of the universal joint (8) close to the radiator body (2) is fixedly connected to a connecting ear (21). The connecting ear (21) is fixedly connected to the radiator body (2).

5. The welding quality detection device for a plate-fin radiator according to claim 1, wherein, A plurality of synchronous springs (29) are provided, respectively located below the top synchronous actuating plate (28), above the bottom synchronous actuating plate (28), and on the upper and lower surfaces of each other synchronous actuating plate (28) to provide the same driving force for the bending block (30).

6. The welding quality detection device for a plate-fin heat sink according to claim 1, characterized in that, The detection tower (7) is aligned with the center of the radiator body (2). A plurality of detection grooves (33) corresponding one by one to the abnormal bending of the partitions (201) are provided inside the detection tower (7). An arc-shaped glass plate (34) is fixedly installed on the side of the detection groove (33) facing the radiator body (2). A reflective laser sensor (35) is fixedly installed in the detection groove (33).

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