An automobile radiator brazing quality detection device

Abstract

The present invention discloses a brazing quality detection device for an automotive radiator, belonging to the technical field of brazing detection of automotive radiators. The device includes a detection table, on which a welding test mechanism is provided for simulating the detection environment of the automotive radiator. An overall detection unit is also provided on the detection table for detecting the welding integrity of the heat dissipation fins and the coverage rate of the brazing surface. By means of the detection table equipped with an infrared opposed detector and in cooperation with a detection rod, the present invention can determine whether the infrared receiving end can normally receive the infrared signal emitted by the infrared transmitting end when the heat dissipation fins perform vertical lifting after brazing, and use this as the detection standard for the brazing quality of the heat dissipation fins, so as to know whether there is a situation where the brazing joint is not firmly welded and the brazing part is fractured, achieving the effect of efficient detection. And according to the setting position of the infrared receiving end that cannot receive the infrared signal, the approximate position where the heat dissipation fins are not qualified in welding can be known, shortening the troubleshooting time of quality inspection personnel.

Description

Technical Field

[0001] The present invention relates to the technical field of brazing detection of automobile radiators, and particularly relates to a device for detecting the brazing quality of automobile radiators. Background Art

[0002] An automobile radiator is an important component for cooling an automobile engine during operation. It includes a radiator core and a rectangular frame surrounding the radiator core. Fixed seats with connection holes are provided on both sides of the rectangular frame. To improve the cooling capacity, corrugated cooling fins are used at the radiator core to disrupt the boundary layer of the air flow on the surface of the cooling fins, increase the contact area between the radiator core and the air, and thus improve the cooling capacity.

[0003] In the existing brazing of automobile radiators, the radiator core is inserted into the rectangular frame and then welded. During processing, a low-concentration flux is sprayed on the surface of the radiator, and then brazing is performed through a continuous brazing furnace.

[0004] Currently, the detection method for the welding quality of brazed automobile radiators mainly involves visual inspection and knocking by quality inspectors. Although such a detection method can detect un-brazed points, it cannot determine the welding strength and welding coverage rate within the knocked area, making it impossible to ensure the quality of the automobile radiator during use and posing a potential risk of engine damage due to overheating. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem that the current detection method for the welding quality of brazed automobile radiators mainly involves visual inspection and knocking by quality inspectors. Although such a detection method can detect un-brazed points, it cannot determine the welding strength and welding coverage rate within the knocked area, making it impossible to ensure the quality of the automobile radiator during use and posing a potential risk of engine damage due to overheating. Therefore, a device for detecting the brazing quality of automobile radiators is proposed.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A device for detecting the brazing quality of automobile radiators includes a detection table for detecting the brazing of automobile radiators. A welding test mechanism is provided on the detection table to simulate the detection environment of the automobile radiator. An overall detection unit is provided on the detection table to detect the welding integrity of the cooling fins and the coverage rate of the brazed surface. The overall detection unit is composed of a cooling fin detection mechanism and a brazing coverage rate detection mechanism;

[0008] The welding test mechanism includes driving brackets fixedly installed on both sides of the detection table. The driving brackets are sleeved with driving gears through driving rotating shafts. The driving gears are engaged with a selection bracket. An electric hydraulic cylinder is arranged on one side of the selection bracket away from the detection table. The electric hydraulic cylinder is connected to the selection bracket through a hydraulic connecting rod. And a lifting driving module is arranged outside the driving rotating shaft. A lifting servo motor is arranged on the lifting driving module. A transmission lead screw is fixed to the output shaft of the lifting servo motor. A lifting seat is drivingly connected to the outer surface of the transmission lead screw.

[0009] The heat dissipation belt detection mechanism includes an installation sleeve arranged on the top of the detection table. The installation sleeve is slidably connected with a detection rod through a tension spring. Detection holes are formed in the inner wall of the detection rod. An infrared pair detector is arranged on the top of the detection table.

[0010] The brazing coverage rate detection mechanism includes a pressure sensor arranged inside the detection table.

[0011] Preferably, the lifting seat is rotationally connected to the driving rotating shaft, and the driving rotating shaft is clamped with the driving gear through a driving strip.

[0012] Preferably, the selection bracket is slidably connected with the driving rotating shaft through a rotating shaft chute. A rack engaged with the driving gear is arranged inside the selection bracket. Gear limit chutes are formed on the selection bracket to limit the distance of the driving gear relative to the detection table.

[0013] Preferably, a limit card is arranged on the detection rod towards the inner side of the detection table to stably limit the automotive radiator installed in the detection table. And sliding limit strips slidably connected with the installation sleeve are arranged on the outer surface of the detection rod.

[0014] Preferably, the infrared pair detector sends an infrared signal from an infrared emission end to an infrared receiving end. And the infrared signal passes through the detection hole. After the detection rod blocks the infrared signal, the infrared receiving end loses the infrared signal.

[0015] Preferably, a heat dissipation support table is arranged inside the detection table. The pressure sensor is arranged on the top of the heat dissipation support table and touches the bottom of the automotive radiator.

[0016] Preferably, a heat dissipation core detection mechanism is further arranged on the detection table to detect the brazing strength of the heat dissipation core under turbulent flow. A detection box is arranged below the detection table. The detection box is communicated with a detection liquid pipe. The heat dissipation core detection mechanism includes a brazing firmness detection bracket fixedly installed on the top of the detection table. The brazing firmness detection bracket is composed of a plurality of cutting detection arms. A hydraulic detection cavity is arranged inside the cutting detection arm. A cutting detection strip hermetically and slidably connected with the cutting detection arm is arranged inside the hydraulic detection cavity. Adjacent two cutting detection arms are communicated through a detection connecting pipe.

[0017] Preferably, a detection sliding plug is slidably connected to the inner wall of the detection connecting pipe, and the sliding driving force of the detection sliding plug is provided by the hydraulic pressure difference between two adjacent hydraulic detection cavities.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. By means of the detection table equipped with an infrared pair detector and the detection rod, it is possible to know whether the infrared receiving end can normally receive the infrared signal emitted by the infrared transmitting end when the heat dissipation belt performs vertical lifting after brazing, and use this as the detection standard for the brazing quality of the heat dissipation belt, so as to know whether there is a situation where the brazing joint is not firmly welded and the brazing part is broken, achieving the effect of efficient detection. And according to the setting position of the infrared receiving end that cannot receive the infrared signal, it is possible to know the approximate position where the heat dissipation belt is unqualified in welding, shortening the troubleshooting time of quality inspection personnel.

[0020] 2. By means of the detection table equipped with a pressure sensor and the automotive radiator after injecting the heat dissipation liquid, it is possible to detect the downward pressure, that is, the gravity, of the automotive radiator at the beginning and end of the vertical lifting of the detection table through the pressure sensor, so that it is possible to directly reflect whether the overall brazing strength meets the requirements through the change in the gravity of the entire automotive radiator before and after the overall test, quickly know whether there is a brazing weak point, that is, a place where the brazing coverage rate is insufficient, and accelerate the brazing detection speed.

[0021] 3. By means of the detection table equipped with a driving rotating shaft and the selection bracket, it is possible to simulate the test environment of the automotive radiator, improve the authenticity and accuracy of the detection data of the overall detection unit and the heat dissipation core detection mechanism for the automotive radiator, and achieve the effect of reducing the detection cost by simplifying the simulation driving mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of a brazing quality detection device for an automotive radiator proposed by the present invention;

[0023] Figure 2 It is a schematic diagram of the internal structure of the detection box in a brazing quality detection device for an automotive radiator proposed by the present invention;

[0024] Figure 3 It is an exploded view of the internal structure of the detection box in a brazing quality detection device for an automotive radiator proposed by the present invention;

[0025] Figure 4 It is a sectional view of the structure of the selection bracket, driving rotating shaft and driving gear in a brazing quality detection device for an automotive radiator proposed by the present invention;

[0026] Figure 5Cross-sectional schematic diagram of the internal structure of the insertion detection arm in a brazing quality detection device for an automotive radiator proposed by the present invention;

[0027] Figure 6 Longitudinal sectional schematic diagram of the internal structure of the brazing firmness detection bracket of a brazing quality detection device for an automotive radiator proposed by the present invention.

[0028] Reference numerals: 1, detection table; 11, heat dissipation support table; 12, detection box; 13, detection liquid pipe; 2, drive bracket; 21, drive rotating shaft; 211, drive strip; 22, drive gear; 3, selection bracket; 31, electric hydraulic cylinder; 311, hydraulic connecting rod; 32, rack; 4, lifting drive module; 41, lifting servo motor; 42, transmission lead screw; 43, lifting seat; 5, mounting sleeve; 51, tension spring; 52, detection rod; 521, limit clamp; 6, infrared pair detector; 7, pressure sensor; 8, brazing firmness detection bracket; 81, insertion detection arm; 82, insertion detection strip; 83, detection connecting pipe; 84, detection sliding plug. Detailed implementation manners

[0029] 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.

[0030] 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 accompanying 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 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.

[0031] In the description of the present invention, it should be noted that unless otherwise clearly specified 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 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 circumstances.

[0032] Example, refer to Figures 1 to 6, an automobile radiator brazing quality detection device, including a detection table 1 for brazing detection of automobile radiators. A welding test mechanism is arranged on the detection table 1 to simulate the detection environment of the automobile radiator. An overall detection unit is arranged on the detection table 1 to detect the welding integrity of the heat dissipation fins and the coverage rate of the brazing surface. The overall detection unit is composed of a heat dissipation fin detection mechanism and a brazing coverage rate detection mechanism.

[0033] It should be noted that: the automobile radiator mentioned in the present invention is a copper-aluminum automobile radiator, which is composed of components such as heat dissipation fins, heat dissipation cores, fixing plates and connecting pipes brazed to each other. This is the existing automobile heat dissipation brazing composition technology, and will not be elaborated in the following description of the brazing methods of the components involved in the automobile radiator brazing detection process.

[0034] As Figures 2 to 4 shown, the welding test mechanism includes driving brackets 2 fixedly installed on both sides of the detection table 1. The driving brackets 2 are sleeved with driving gears 22 through driving rotating shafts 21. The driving gears 22 are engaged with a selection bracket 3. An electric hydraulic cylinder 31 is arranged on the side of the selection bracket 3 away from the detection table 1. The electric hydraulic cylinder 31 is connected to the selection bracket 3 through a hydraulic connecting rod 311. A cross bar is fixed outside the hydraulic connecting rod 311 to simultaneously push the upper and lower ends of the selection bracket 3, ensuring that the selection bracket 3 will not tilt when sliding;

[0035] An elevating drive module 4 is arranged outside the driving rotating shaft 21. An elevating servo motor 41 is arranged on the elevating drive module 4. The output shaft of the elevating servo motor 41 is fixed with a transmission lead screw 42. The outer surface of the transmission lead screw 42 is in transmission connection with an elevating seat 43. The elevating seat 43 is rotationally connected to the driving rotating shaft 21, and the driving rotating shaft 21 is clamped with the driving gear 22 through a driving strip 211;

[0036] It should be noted that: when the detection table 1 needs to be lifted, the elevating servo motor 41 is started to drive the transmission lead screw 42 to rotate, so that the elevating seat 43 is lifted and lowered, thereby driving the driving rotating shaft 21 rotationally connected to the elevating seat 43 to be lifted and lowered synchronously;

[0037] Furthermore, the selection bracket 3 is slidably connected to the driving rotating shaft 21 through a rotating shaft chute. A rack 32 engaged with the driving gear 22 is arranged inside the selection bracket 3. A gear limit chute is arranged on the selection bracket 3 to limit the distance of the driving gear 22 relative to the detection table 1;

[0038] It should be noted that when the detection table 1 needs to be flipped and lifted, the electric hydraulic cylinder 31 is started, so that the hydraulic connecting rod 311 pushes the selection bracket 3, and the driving gear 22 is clamped on the outer surface of the driving rotating shaft 21. Thus, when the driving gear 22 meshes with the rack 32, the driving rotating shaft 21 can be driven to rotate synchronously, driving the detection table 1 to perform flipping drive, and then achieving the effect of conveniently simulating the detection environment of the automobile radiator, improving the authenticity and accuracy of the detection data of the overall detection unit and the heat dissipation core detection mechanism for the automobile radiator.

[0039] As Figure 2 and Figure 3 shown, the heat dissipation belt detection mechanism includes an installation sleeve 5 arranged on the top of the detection table 1. The installation sleeve 5 is slidably connected with a detection rod 52 through a tension spring 51. A detection hole is opened in the inner wall of the detection rod 52, and an infrared pair detector 6 is arranged on the top of the detection table 1;

[0040] Furthermore, a limit card 521 is arranged on the detection rod 52 in the direction towards the inner side of the detection table 1 for stably limiting the automobile radiator installed in the detection table 1, and a sliding limit strip slidably connected with the installation sleeve 5 is arranged on the outer surface of the detection rod 52;

[0041] Furthermore, the infrared pair detector 6 sends an infrared signal from the infrared transmitting end to the infrared receiving end, and the infrared signal passes through the detection hole. After the detection rod 52 blocks the infrared signal, the infrared receiving end loses the infrared signal;

[0042] Furthermore, as Figure 3 shown, the brazing coverage rate detection mechanism includes a pressure sensor 7 arranged inside the detection table 1. A heat dissipation support table 11 is arranged inside the detection table 1, and the pressure sensor 7 is arranged on the top of the heat dissipation support table 11 and touches the bottom of the automobile radiator;

[0043] It should be noted that: a wireless communication module is also arranged on the infrared pair detector 6 and the pressure sensor 7, which can send the situation of whether the infrared receiving end normally receives the infrared signal sent by the infrared transmitting end and the reading of the pressure sensor 7 to the control end. Thus, when the automobile radiator is undergoing a simulation test, the heat dissipation core, heat dissipation belt, and overall brazing strength can be known in real time.

[0044] Based on the above, when detecting the welding situation of the heat dissipation belt and the overall brazing strength, first, the automobile radiator after injecting the heat dissipation liquid needs to be sealed through an existing sealing device such as a sealing plug, and the detection processes of the welding situation of the heat dissipation belt and the overall brazing strength are both carried out when the detection table 1 only performs lifting. The detection processes are as follows:

[0045] The detection process of the soldering condition of the heat dissipation belt is as follows: Start the lifting servo motor 41 to drive the transmission lead screw 42 to rotate. When the lifting seat 43 only moves up and down, it will drive the driving rotating shaft 21 to move up and down synchronously, so that the detection table 1 only moves up and down. At this time, the detection rod 52 presses on the surface of the automotive radiator. When the brazing quality of the heat dissipation belt is qualified, multiple detection rods 52 set will move up and down synchronously, so that the infrared receiving end of the infrared pair detector 6 can normally receive the infrared signal emitted by the infrared transmitting end;

[0046] When the brazing quality of the heat dissipation belt is unqualified, during the lifting process of some heat dissipation belts, due to inertia, they will become scattered, resulting in the overall center of gravity of the automotive radiator shifting during the lifting process, causing the multiple detection rods 52 set not to move up and down synchronously, showing an uneven situation, so that the infrared receiving end of the infrared pair detector 6 cannot receive the infrared signal emitted by the infrared transmitting end. Thus, it is possible to use whether the infrared receiving end can normally receive the infrared signal emitted by the infrared transmitting end as the detection standard for the brazing quality of the heat dissipation belt, to know the firmness of the brazing of the heat dissipation belt, and based on the setting position of the infrared receiving end where the infrared signal cannot be received, it is possible to know the approximate position where the soldering of the heat dissipation belt is unqualified, shortening the troubleshooting time of quality inspection personnel;

[0047] Based on the above, further, the detection process of the overall brazing strength is as follows: When the entire automotive radiator only moves vertically up and down, the center of gravity of the automotive radiator will not change due to the heat dissipation liquid filled inside. At this time, the pressure sensor 7 is used to detect the downward pressure of the automotive radiator at the beginning and end of the vertical lifting of the detection table 1 (when the automotive radiator is in a vertical state, its downward pressure on the pressure sensor 7 is equal to its gravity). When its downward pressure does not change (when the brazing part does not rupture, the total amount of heat dissipation liquid in the automotive radiator will not change), it means that the overall brazing strength meets the requirements. Thus, it is possible to use the change in the downward pressure of the automotive radiator detected by the pressure sensor 7 as the detection standard for the overall brazing strength:

[0048] As Figure 5 and Figure 6 shown, a heat dissipation core detection mechanism is also provided on the detection table 1 for detecting the brazing strength of the heat dissipation core under turbulent flow. A detection box 12 is provided below the detection table 1, and the detection box 12 is connected to a detection liquid pipe 13. The heat dissipation core detection mechanism includes a brazing firmness detection bracket 8 fixedly installed on the top of the detection table 1. The brazing firmness detection bracket 8 is composed of multiple insertion detection arms 81. A hydraulic detection cavity is provided inside the insertion detection arm 81, and an insertion detection strip 82 that is hermetically slidably connected to the insertion detection arm 81 is provided in the hydraulic detection cavity. Adjacent two insertion detection arms 81 are connected and communicated through a detection connecting pipe 83;

[0049] Furthermore, a detection sliding plug 84 is slidably connected to the inner wall of the detection connecting pipe 83. The sliding driving force of the detection sliding plug 84 is provided by the hydraulic pressure difference between two adjacent hydraulic detection cavities, and the detection connecting pipe 83 is made of a transparent material;

[0050] It should be noted that: before the brazing quality detection of the radiator core, the radiator core detection mechanism is not installed on the detection table 1, and the radiator cores and radiator fins in the automotive radiator are linearly spaced. When performing the anti-airflow detection on the brazed parts of the radiator core, the detection liquid can be injected into the detection box 12, and the electric hydraulic cylinder 31 is started to drive the selection bracket 3 close to the detection table 1, so that the detection table 1 can be turned and lifted, bringing the automotive radiator into contact with the detection liquid and turning in the disturbed fluid to simulate the anti-airflow environment where the automotive radiator is arranged at the front end of the vehicle and in contact with the airflow. During this period, by observing whether the detection sliding plug 84 between two adjacent brazing firmness detection brackets 8 moves, it serves as the brazing detection standard for the radiator core;

[0051] Based on the above, the cutting detection arm 81 is arranged in the edge area of the automotive radiator core. When the brazing connection of the radiator core is disconnected due to the influence of turbulent flow, that is, when the radiator core is displaced, under the liquid pressure in the hydraulic detection cavity, it can be inserted between the radiator cores and weaken the hydraulic pressure in the corresponding hydraulic detection cavity on this side, causing the detection sliding plug 84 to move towards the side with lower hydraulic pressure. Thus, by observing whether the detection sliding plug 84 moves, the brazing strength of the radiator core can be intuitively judged, which is convenient for quality inspection personnel to detect. And by moving the cutting detection arm 81 corresponding to the detection sliding plug 84 after movement, the unqualified brazing parts of the radiator core can be quickly known, achieving the effect of shortening the inspection speed of quality inspection personnel.

[0052] Working principle:

[0053] When the present invention performs the brazing quality detection on the automotive radiator, it is divided into three detection processes: the welding integrity of the radiator fins, the overall brazing coverage rate, and the brazing strength of the radiator core. And when detecting the automotive radiator, the detection environment of the automotive radiator can be simulated through the welding test mechanism, and its simulation process is divided into the vertical lifting process and the turning lifting process of the detection table 1;

[0054] Among them, the vertical lifting simulation process of the detection table 1 is: start the lifting servo motor 41 to drive the transmission lead screw 42 to rotate, so that the lifting seat 43 is lifted and lowered, thereby driving the driving rotating shaft 21 rotatably connected to the lifting seat 43 to be lifted and lowered synchronously;

[0055] The flipping and lifting simulation process of the inspection table 1 is as follows: Start the electric hydraulic cylinder 31, so that the hydraulic connecting rod 311 pushes the selection bracket 3, and the driving gear 22 is clamped on the outer surface of the driving rotating shaft 21. Thus, when the driving gear 22 meshes with the rack 32, it can drive the driving rotating shaft 21 to rotate synchronously, drive the inspection table 1 to flip, and then achieve the effect of conveniently simulating the inspection environment of the automotive radiator, improving the authenticity and accuracy of the inspection data of the overall inspection unit and the heat dissipation core inspection mechanism for the automotive radiator;

[0056] The inspection process for the integrity of the heat dissipation strip welding is as follows: When the inspection table 1 only moves up and down, at this time, the inspection rod 52 presses on the surface of the automotive radiator. When the brazing quality of the heat dissipation strip is qualified, multiple set inspection rods 52 will move up and down synchronously, so that the infrared receiving end of the infrared pair detector 6 can normally receive the infrared signal emitted by the infrared transmitting end;

[0057] Based on the above, when the brazing quality of the heat dissipation strip is unqualified, some heat dissipation strips will be scattered due to inertia during the lifting process, resulting in the overall center of gravity of the automotive radiator shifting during the lifting process, causing the multiple set inspection rods 52 not to move up and down synchronously, showing unevenness, so that the infrared receiving end of the infrared pair detector 6 cannot receive the infrared signal emitted by the infrared transmitting end. Thus, whether the infrared receiving end can normally receive the infrared signal emitted by the infrared transmitting end can be used as the inspection standard for the brazing quality of the heat dissipation strip, and the firmness of the brazing of the heat dissipation strip can be known;

[0058] The inspection process for the overall brazing coverage rate is as follows: When the automotive radiator only moves vertically up and down as a whole, the center of gravity of the automotive radiator will not change due to the heat dissipation liquid filled inside. At this time, the pressure sensor 7 is used to detect the downward pressure of the automotive radiator at the beginning and end of the vertical lifting of the inspection table 1 (when the automotive radiator is in a vertical state, its downward pressure on the pressure sensor 7 is equal to its gravity). When its downward pressure does not change (when the brazing part does not break, the total amount of heat dissipation liquid in the automotive radiator will not change), it indicates that the overall brazing strength meets the requirements. Thus, the change in the downward pressure of the automotive radiator detected by the pressure sensor 7 can be used as the inspection standard for the overall brazing strength;

[0059] The detection process of the brazing strength of the heat dissipation core is as follows: Inject the detection liquid into the detection box 12, and start the electric hydraulic cylinder 31 to drive the selection bracket 3 close to the detection table 1, so that the detection table 1 can be turned and lifted. The automotive radiator is brought into contact with the detection liquid and flipped in the disturbed fluid to simulate the anti-airflow environment where the automotive radiator is arranged at the front end of the vehicle and in contact with the airflow. When the brazing of the heat dissipation core is disconnected due to the influence of the turbulent flow, that is, when the heat dissipation core is displaced, under the liquid pressure in the hydraulic detection cavity, a probe is inserted between the heat dissipation cores, and the hydraulic pressure in the corresponding hydraulic detection cavity at this place is weakened, so that the detection sliding plug 84 moves towards the side with lower hydraulic pressure, and thus it can be observed whether the detection sliding plug 84 moves, and the brazing strength of the heat dissipation core can be visually judged, which is convenient for quality inspection personnel to conduct the detection.

[0060] The above is only the preferred specific implementation manner 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 all should be covered within the protection scope of the present invention.

Claims

1. A car radiator brazing quality inspection device, comprising a test bench (1) for car radiator brazing inspection, characterized in that: The test bench (1) is provided with a welding test mechanism for simulating the test environment of an automobile radiator. The test bench (1) is provided with an integral test unit for testing the welding integrity of the heat dissipation belt and the coverage of the brazing surface. The integral test unit is composed of a heat dissipation belt test mechanism and a brazing coverage test mechanism. The welding test mechanism comprises a driving bracket (2) fixedly mounted on both sides of the detection platform (1), the driving bracket (2) being sleeved with a driving gear (22) via a driving shaft (21), the driving gear (22) being meshed with a selection bracket (3), an electric hydraulic cylinder (31) being arranged on a side of the selection bracket (3) away from the detection platform (1), the electric hydraulic cylinder (31) being connected to the selection bracket (3) via a hydraulic connecting rod (311), a lifting driving module (4) being arranged outside the driving shaft (21), a lifting servo motor (41) being arranged on the lifting driving module (4), a transmission screw (42) being fixed to an output shaft of the lifting servo motor (41), and a lifting seat (43) being drivingly connected to an outer surface of the transmission screw (42); The heat dissipation belt detection mechanism comprises a mounting sleeve (5) arranged on the top of the detection platform (1), the mounting sleeve (5) being slidably connected to a detection rod (52) via a tension spring (51), a detection hole being provided on the inner wall of the detection rod (52), and an infrared radiation detector (6) being arranged on the top of the detection platform (1); The infrared radiation detector (6) sends an infrared signal to the infrared receiving end through the infrared transmitting end, and the infrared signal passes through the detection hole. After the detection rod (52) blocks the infrared signal, the infrared receiving end loses the infrared signal. The brazing coverage detection mechanism comprises a pressure sensor (7) arranged inside the detection platform (1); The testing platform (1) is also provided with a heat dissipation core testing mechanism for testing the brazing strength of the heat dissipation core under turbulent flow. A testing box (12) is provided below the testing platform (1), and the testing box (12) is connected to a testing liquid pipe (13). The heat dissipation core testing mechanism comprises a brazing firmness testing bracket (8) fixedly mounted on the top of the testing platform (1). The brazing firmness testing bracket (8) is composed of a plurality of cutting testing arms (81). A hydraulic testing cavity is provided inside the cutting testing arm (81). A cutting testing strip (82) is provided in the hydraulic testing cavity and is sealingly and slidably connected to the cutting testing arm (81). Two adjacent cutting testing arms (81) are connected via a testing connecting pipe (83). The inner wall of the detection connecting tube (83) is slidably connected to a detection sliding plug (84), and the sliding driving force of the detection sliding plug (84) is provided by the hydraulic pressure difference in two adjacent hydraulic detection chambers.

2. The automobile radiator brazing quality inspection equipment according to claim 1, characterized in that: The lifting seat (43) is rotationally connected to the driving shaft (21), and the driving shaft (21) is clamped with the driving gear (22) via a driving bar (211).

3. The automobile radiator brazing quality inspection equipment according to claim 1, characterized in that: The selection bracket (3) is slidably connected to the driving shaft (21) via a shaft slot; a rack (32) is provided inside the selection bracket (3) and meshes with the driving gear (22); a gear limiting slot is provided on the selection bracket (3) to limit the distance of the driving gear (22) relative to the detection platform (1).

4. The automobile radiator brazing quality inspection equipment according to claim 1, characterized in that: The detection rod (52) is provided with a limit card (521) facing the inner side of the detection platform (1) for stably limiting the position of the automobile radiator installed in the detection platform (1), and the outer surface of the detection rod (52) is provided with a sliding limit strip slidably connected to the installation sleeve (5).

5. The automobile radiator brazing quality inspection equipment according to claim 1, characterized in that: A heat dissipation support platform (11) is arranged inside the detection platform (1), and the pressure sensor (7) is arranged on the top of the heat dissipation support platform (11) and contacts the bottom of the automobile radiator.

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