Plate-fin radiator welding quality detection equipment

Abstract

The invention discloses plate-fin radiator welding quality detection equipment, and belongs to the field of welding quality detection equipment.The plate-fin radiator welding quality detection equipment comprises an obliquely-arranged foundation pit and a radiator body with partition plates and fins, a detection box is arranged in the foundation pit, and the two ends of the detection box are provided with electromagnetic valves and semi-arc-shaped flow guide plates; 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. According to the wading simulation device, the circulating water impact assembly and the turbulence simulation assembly are arranged, so that water flow self-circulation is achieved, the radiator body is driven to swing transversely and longitudinally through multiple sets of reciprocating mechanisms, and the wading working condition is simulated; the same pushing force is applied to the partition plate through the synchronous spring, the partition plate is bent twice in the forward direction and the reverse direction, fin interference can be filtered out by arranging the detection tower and utilizing the low-sensitivity reflective laser sensor, defect positioning can be achieved for abnormal deformation of the partition plate, and efficient screening and accurate positioning of welding defects are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of welding quality detection equipment, and particularly 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, seals, and flow guiding sheets after being processed by a welding process. When used for heat dissipation, it is also called a plate-fin radiator. When the plate-fin radiator 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 radiator. 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. Based on the above principle, when an automobile travels on a wading section, if the welding quality of the joints between the partition plates and the fins of the plate-fin radiator is poor under the action of accumulated water turbulence, the joints are prone to fracture. 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 radiator to be unusable. The existing welding quality detection equipment for plate-fin radiators can only detect in the air. However, the vibration characteristics of the plate-fin radiator in the air are sensitive to boundary conditions, that is, the vibration effects on the four sides of the plate-fin radiator are greater than those on the partition plates, which is different from the stress distribution in water. Therefore, the existing welding quality detection equipment for plate-fin radiators cannot detect the potential hazards that may cause this type of fracture. For this reason, a welding quality detection equipment for plate-fin radiators is proposed, which detects the welding quality of the plate-fin radiator after wading use through a destructive detection method. Summary of the Invention

[0003] The purpose of the present invention is to solve the x problem of the existing welding quality detection equipment, and to propose a welding quality detection equipment for plate-fin radiators.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions: A welding quality detection equipment for plate-fin radiators, including an inclined foundation pit and a radiator body containing partition plates 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 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 on the side of the turbulence simulation component close to the circulating water impact component. A detection tower is arranged on the other side of the turbulence simulation component. The turbulence simulation component includes four reciprocating mechanisms in pairs. The reciprocating mechanisms are arranged inside the detection box and the central column. A universal joint is provided at the output end of the reciprocating mechanism, and the radiator body is located between the universal joints. The bending component includes a fixed frame aligned with both ends of the partition. A support column is provided at the bottom of the fixed frame. A drag reduction shell is provided on one side of the fixed frame, and a detection push plate is provided on the other side of the fixed frame.

[0005] Preferably, the circulating water impact component includes an installation wall. Both ends of the installation wall are fixedly connected to the central column and the detection box respectively. A tubular turbine is fixedly installed on one side of the installation wall. A confluence pipeline is provided on the other side of the installation 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.

[0006] 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, and one end of the telescopic rod away from the connecting rod is fixedly connected to a small rotating seat.

[0007] 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, and the connecting ear is fixedly connected to the radiator body.

[0008] Preferably, a waterproof push rod is fixedly installed inside the fixed frame. A plurality of sliding holes are provided on the side of the fixed frame facing the radiator body, and limiting sliding rods are slidably connected inside the sliding holes.

[0009] Preferably, the side of the detection push plate facing the fixed frame is fixedly connected to the output end of the waterproof push rod and the limiting sliding rod. A bending motor protected by a housing is fixedly installed at the top of the detection push plate. A lead screw, a strip-shaped slider, and four limiting vertical rods in pairs are provided on the side of the detection push plate away from the fixed frame. Both ends of the limiting vertical rods are fixedly connected to the upper and lower ends of the fixed frame. The lead screw is located at the center of a group of limiting vertical rods close to the detection push plate. The top of the lead screw passes through the top of the detection push plate and is fixedly connected to the bending motor, and the bottom of the lead screw is rotatably connected to the bottom of the detection push plate.

[0010] 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 limiting vertical rods close to the detection push plate. A plurality of synchronous actuating plates are fixedly connected to one side of the strip-shaped slider away from the detection push plate. The synchronous actuating plates are slidably connected to a group of limiting vertical rods away from the detection push plate. Synchronous springs are arranged between the synchronous actuating plates, and a plurality of bending blocks are arranged between the synchronous springs.

[0011] 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 surfaces of each other synchronous actuating plate, for providing the same driving force to the bending blocks.

[0012] 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 piercing cone for piercing the fins, so that the bending rod can smoothly enter between the partitions.

[0013] 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 one side of the detection groove facing the radiator body, and a reflective laser sensor is fixedly installed in the detection groove.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By setting the circulating water impact component and the turbulence simulation component, the present invention realizes the self-circulation of water flow through the reverse-set tubular turbine while impacting the radiator body through the water flow. Through the alternating actions of multiple sets of reciprocating mechanisms, the radiator body can be driven to swing longitudinally and horizontally, simulating the complex fluid environment encountered during real wading, enabling the radiator body to bear alternating impact loads, and fully exposing the fatigue defects at the welded parts of the partitions.

[0015] 2. By setting the bending component, through the coordinated use of the lead screw, synchronous actuating plate and synchronous spring, the displacement synchronous control of all bending blocks can be realized. In particular, the layer-by-layer arranged synchronous springs can ensure that each partition bears uniform thrust, and the reliability of the welded joints in different stress directions can be detected through two opposite actions.

[0016] 3. By setting the detection tower, taking advantage of the fact that the bending amplitude of the partition with poor welding is greater than that of the normal partition under the same force, the abnormal deformed partition is detected by the reflective laser sensor, realizing the precise positioning of the defect location. By setting a reflective laser sensor with low sensitivity, the interference of the fins can be effectively avoided, improving the detection accuracy. Description of the Drawings

[0017] Figure 1Schematic diagram of the overall structure of a welding quality detection device for a plate-fin radiator proposed by the present invention; Figure 2 Internal structure cross-sectional view of the detection box in a welding quality detection device for a plate-fin radiator proposed by the present invention; Figure 3 Schematic diagram of the structure of the bending component in a welding quality detection device for a plate-fin radiator proposed by the present invention in the standby state; Figure 4 Schematic diagram of the structure of the bending component in a welding quality detection device for a plate-fin radiator proposed by the present invention when entering the radiator body; Figure 5 Structure assembly drawing of the reciprocating mechanism and the universal joint in a welding quality detection device for a plate-fin radiator proposed by the present invention; Figure 6 Structure assembly drawing of the bending component in a welding quality detection device for a plate-fin radiator proposed by the present invention; Figure 7 Structure assembly drawing of the detection push plate in a welding quality detection device for a plate-fin radiator proposed by the present invention; Figure 8 Internal structure cross-sectional view of the bending component in a welding quality detection device for a plate-fin radiator proposed by the present invention when bending downward; Figure 9 Internal structure cross-sectional view of the bending component in a welding quality detection device for a plate-fin radiator proposed by the present invention when bending upward; Figure 10 Internal structure cross-sectional view of the detection tower in a welding quality detection device for a plate-fin radiator proposed by the present invention; Figure 11 For Figure 10 Enlarged view of part A in

[0018] In the figure: 1, foundation pit; 2, radiator body; 201, partition board; 202, fin; 3, detection box; 4, solenoid valve; 5, deflector; 6, central column; 7, detection tower; 8, universal joint; 9, fixed frame; 10, resistance reduction shell; 11, detection push plate; 12, installation wall; 13, tubular turbine; 14, confluence pipeline; 15, fixing plate; 16, reciprocating motor; 17, turntable; 18, connecting rod; 19, telescopic rod; 20, small rotating seat; 21, connecting ear; 22, waterproof push rod; 23, limit slide bar; 24, bending motor; 25, limit vertical rod; 26, lead screw; 27, strip-shaped slider; 28, synchronous actuating plate; 29, synchronous spring; 30, bending block; 31, bending rod; 32, puncture cone; 33, detection groove; 34, arc-shaped glass plate; 35, reflective laser sensor. Detailed implementation manners

[0019] 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 only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] 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, and thus should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, 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 communication inside 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.

[0022] 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 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 in 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 oppositely between the outer side wall of the central column 6 and the inner side wall of the detection box 3. A turbulence simulation component is arranged at the output end of the circulating water impact component; 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; On one side of the turbulent flow simulation component close to the circulating water impact component, there are two bending components. 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, the bottom of the fixed frame 9 is provided with a support pillar connected to the bottom of the detection box 3, one side of the fixed frame 9 facing the tubular turbine 13 is provided with a drag reduction shell 10, and the other side of the fixed frame 9 is provided with a detection push plate 11; On the side of the turbulent flow simulation component far from the circulating water impact component, there is a detection tower 7 for monitoring the bending degree of the partition plate 201.

[0023] 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.

[0024] Furthermore, the circulating water impact component includes an installation wall 12. Both ends of the installation wall 12 are respectively fixedly connected to the central column 6 and the detection box 3. One side of the installation wall 12 is fixedly installed with a tubular turbine 13. The other side of the installation wall 12 is provided with a confluence pipeline 14. The output end of the confluence pipeline 14 matches the inner diameter of the tubular turbine 13, which is used to improve the working efficiency of the tubular turbine 13; Furthermore, the reciprocating mechanism includes a fixed plate 15. One side of the fixed plate 15 is fixedly connected with a reciprocating motor 16. The other side of the fixed plate 15 is rotatably connected with a turntable 17. The back of the turntable 17 is fixedly connected with the reciprocating motor 16. The surface of the turntable 17 is fixedly connected with a connecting rod 18. One end of the connecting rod 18 far from the turntable 17 is movably connected with a telescopic rod 19. One end of the telescopic rod 19 far from the connecting rod 18 is fixedly connected with a small rotating seat 20. The surface of the small rotating seat 20 is rotatably connected with a universal joint 8. One end of the universal joint 8 close to the radiator body 2 is fixedly connected with a connecting ear 21, and the connecting ear 21 is fixedly connected with the radiator body 2; The advantage of the above further improvement is that through the reversely arranged tubular turbine 13, the self-circulation of water flow is realized. Through the alternating actions of multiple groups of reciprocating mechanisms, the radiator body 2 can be driven to swing longitudinally and transversely, simulating the complex fluid environment encountered by real wading equipment, enabling the radiator body 2 to bear alternating impact loads, and fully exposing the fatigue defects at the welded parts of the partition plate 201.

[0025] Furthermore, a waterproof push rod 22 is fixedly installed in the fixed frame 9. One side of the fixed frame 9 facing the radiator body 2 is provided with a plurality of sliding holes, and a limiting sliding rod 23 is slidably connected in the sliding holes; Furthermore, 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 limit slide rod 23. A bending motor 24 protected by a housing is fixedly installed at the top end of the detection push plate 11. A lead screw 26, a strip-shaped slider 27, and four limit vertical rods 25 in two groups are arranged on the side of the detection push plate 11 away from the fixed frame 9. Both ends of the limit vertical rods 25 are fixedly connected to the upper and lower ends of the fixed frame 9 respectively. The lead screw 26 is located at the center of a group of limit 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; Furthermore, 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 limit 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 limit vertical rods 25 away from the detection push plate 11. Synchronous springs 29 are arranged between the synchronous actuating plates 28. There are a plurality of synchronous springs 29, which are 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 springs 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; 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 springs 29, the displacement synchronous control of all the bending blocks 30 can be achieved. In particular, the layer-by-layer 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.

[0026] Furthermore, 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; 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, and the detection accuracy is improved.

[0027] When the present invention is in use, after the tester enters the detection box 3 and closes the air inlets of the two radiator bodies 2, they are respectively installed in the corresponding turbulence simulation components through the connecting ears 21. 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 pipeline 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 the radiator body 2. Then, the industrial control computer turns on all the tubular turbines 13 and reciprocating motors 16 to simulate the water environment. When simulating the water environment, the water flow enters the tubular turbine 13 from the confluence pipeline 14 and is output. The water flow is driven by the oppositely arranged tubular turbines 13 to circulate in the detection box 3, and at the same time, it impacts the radiator body 2. The action of the turbulence simulation component simulates turbulence, causing fatigue to the welded joints of the partition plate 201, thus realizing the function of simulating the water environment. The turbulence simulation component alternately performs the following two groups of actions: Action group one: The two reciprocating motors 16 located 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 tops of the radiator bodies 2 towards the mounting wall 12 from both ends. The working process of the above reciprocating mechanism will not be described in detail below. Then, the two reciprocating motors 16 located at the bottom start, and the radiator bodies 2 are 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 bodies 2 to swing longitudinally. When the radiator bodies 2 swing longitudinally, all the universal joints 8 rotate in the small rotating seats 20 to support this group of actions.

[0028] Action group two: The reciprocating components on one side and the reciprocating components on the other side act alternately, driving the radiator bodies 2 to swing transversely. When the radiator bodies 2 swing transversely, this group of actions is supported by the rotation of the universal joints 8.

[0029] 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 limiting slide rod 23 towards the radiator body 2 in the fixed frame 9. During the sliding process, the piercing cone 32 pierces and squeezes the fins 202 around, so that the bending rod 31 enters between the partition plates 201 to support the welding quality detection; When performing welding quality inspection, all bending motors 24 synchronously drive the lead screw 26 to rotate, driving the strip-shaped slider 27 and the synchronous actuator plate 28 to slide upward synchronously along the limit vertical rod 25. During the upward movement of the synchronous actuator plate 28, all bending blocks 30 are simultaneously squeezed from the bottom through the synchronous spring 29, and all corresponding partition plates 201 are bent simultaneously through the bending rod 31. Then, the inspection tower 7 starts to work, and the presence or absence of an object is checked through the reflective laser sensor 35. Since the sensitivity of the reflective laser sensor 35 is low, the inspection process will not be interfered by the thin fin 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 an object and output a signal, so that the position of the welding quality defect can be quickly and accurately detected. After the inspection is completed, the inspection tower 7 stands by; Then all bending motors 24 synchronously drive the lead screw 26 to rotate in the reverse direction, causing the strip-shaped slider 27 to slide downward. All bending blocks 30 are simultaneously squeezed from the top through the synchronous spring 29, and all partition plates 201 are bent in the reverse direction. Then, the inspection tower 7 is turned on again for inspection, realizing the function of quickly detecting welding quality defects and positioning the positions where welding quality defects occur, and further detecting the welding quality of the radiator body 2 after wading use; After the inspection is completed, the valve at the lower position is opened, and the water in the inspection box 3 flows along the bottom of the inspection box 3 to the valve at the lower position and is discharged from the inspection box 3 due to the inclined setting of the foundation pit 1.

[0030] 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 and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A welding quality inspection 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 guiding 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). A turbulence simulation component is arranged at the output end of the circulating water impact component. Two bending components are arranged on one side of the turbulence simulation component close to the circulating water impact component. A detection tower (7) is arranged on the other side of the turbulence simulation component; 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); The bending component includes a fixed frame (9) aligned with both ends of the partition plate (201). Struts are arranged at the bottom of the fixed frame (9). A resistance reduction shell (10) is arranged on one side of the fixed frame (9). A detection push plate (11) is arranged on the other side of the fixed frame (9).

2. The welding quality inspection device for a plate-fin radiator according to claim 1, characterized in that, The circulating water impact component includes an installation wall (12). Both ends of the installation 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 installation wall (12). A confluence pipeline (14) is opened 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 inspection device for a plate-fin radiator according to claim 1, characterized in that, The reciprocating mechanism includes a fixed plate (15). A reciprocating motor (16) is fixedly connected to one side of the fixed plate (15). A turntable (17) is rotatably connected to the other side of the fixed 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) far from the turntable (17) is movably connected to a telescopic rod (19). One end of the telescopic rod (19) far from the connecting rod (18) is fixedly connected to a small rotating seat (20).

4. The welding quality inspection device for a plate-fin radiator according to claim 3, characterized in that, 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 inspection device for a plate-fin radiator according to claim 1, characterized in that, A waterproof push rod (22) is fixedly installed in the fixed frame (9). A plurality of sliding holes are opened on one side of the fixed frame (9) facing the radiator body (2). A limiting sliding rod (23) is slidably connected in the sliding holes.

6. The welding quality inspection device for a plate-fin radiator according to claim 1, characterized in that, 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 limit sliding rod (23). A bending motor (24) protected by a housing is fixedly installed at the top end of the detection push plate (11). On the side of the detection push plate (11) away from the fixed frame (9), a lead screw (26), a strip-shaped slider (27), and four limit vertical rods (25) in two groups are provided. Both ends of the limit vertical rod (25) are fixedly connected to the upper and lower ends of the fixed frame (9). The lead screw (26) is located at the center of a group of limit 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).

7. The welding quality inspection device for a plate-fin radiator according to claim 6, characterized in that, 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 limit 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 limit vertical rods (25) away from the detection push plate (11). A synchronous spring (29) is provided between the synchronous actuating plates (28). A plurality of bending blocks (30) are provided between the synchronous springs (29).

8. The welding quality inspection device for a plate-fin radiator according to claim 7, characterized in that, 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 sides of each other synchronous actuating plate (28), for providing the same driving force to the bending blocks (30).

9. The welding quality inspection device for a plate-fin radiator according to claim 7, characterized in that, Both 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 fin (202), so that the bending rod (31) can smoothly enter between the partitions (201).

10. The welding quality inspection device for a plate-fin radiator 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 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 reflective laser sensor (35) is fixedly installed in the detection slot (33).

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