Ultrasonic detection mechanism

Abstract

The utility model relates to the technical field of radiator detection, and particularly discloses an ultrasonic detection mechanism which comprises an inlet conveying section and a water immersion detection section which are sequentially connected, the inlet conveying section comprises a feeding guide rail, a feeding mechanical arm is arranged between the tail end of the feeding guide rail and the front end of the water immersion detection section, and the water immersion detection section comprises a water immersion tank and a conveying guide rail. A first ultrasonic detection probe, a turnover mechanism and a second ultrasonic detection probe are sequentially arranged along the conveying guide rail, the first ultrasonic detection probe is used for detecting one side of the to-be-detected workpiece, the turnover mechanism is used for horizontally turning over the to-be-detected workpiece by 180 degrees, and the second ultrasonic detection probe is used for detecting the other side of the to-be-detected workpiece; the first ultrasonic detection probe, the turnover mechanism and the second ultrasonic detection probe can move up and down in the vertical direction and horizontally move in the direction perpendicular to the conveying guide rail. According to the scheme, the problems that the detection rhythm is slow, the efficiency is low and the large-batch production requirement cannot be met due to the fact that three different detection stations are needed when ultrasonic detection is carried out on the three welding seams on the water-cooling heat dissipation plate can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of radiator detection, in particular to an ultrasonic detection mechanism. Background Art

[0002] With the development of modern electronic technology, the heat loss of various electrical components is increasing. Water-cooled heat dissipation plates have been widely used in the fields of electronic appliances and new energy vehicles. With the improvement of the power and performance of various electrical components, the welding requirements for water-cooled heat dissipation plates have also increased. Water-cooled heat dissipation plates are mainly used in the field of battery cooling, so the welding requirements for products are relatively high. At present, the welding qualification rate detection of water-cooled heat dissipation plates mainly adopts water immersion ultrasonic detection. Therefore, this process requires mass production and improvement of product production efficiency.

[0003] The water-cooled heat dissipation plates produced by our company are as Figure 1 shown. When detecting the welding qualification rate of the water-cooled heat dissipation plate after brazing, the detection positions include nozzle welds, circumferential welds of the product, and seal seat welds. Originally, three different detection stations were required to perform ultrasonic water immersion detection on the three weld positions respectively, and the detection cycle was 3 min / piece, with low efficiency and unable to meet the mass production requirements. Therefore, it is urgent to optimize the ultrasonic detection structure and detection process. Summary of the Utility Model

[0004] The utility model aims to provide an ultrasonic detection mechanism to solve the problem that when performing ultrasonic detection on three welds on a water-cooled heat dissipation plate, three different detection stations are required, resulting in a slow detection cycle, low efficiency, and inability to meet the mass production requirements.

[0005] To solve the above problems, the technical solution adopted by the utility model is as follows: An ultrasonic detection mechanism includes an inlet conveying section and a water immersion detection section connected in sequence. The inlet conveying section includes a feeding guide rail arranged horizontally. There is a feeding manipulator between the tail end of the feeding guide rail and the front end of the water immersion detection section. The feeding manipulator can transfer the workpiece to be tested into the water immersion detection section. The water immersion detection section includes a water immersion tank and a transportation guide rail arranged horizontally in the water immersion tank. Along the transportation guide rail, a first ultrasonic detection probe, a flipping mechanism, and a second ultrasonic detection probe are arranged in sequence. The transportation guide rail can transport the workpiece to be tested to the tail end of the water immersion tank. The first ultrasonic detection probe is used to detect one side of the workpiece to be tested, the flipping mechanism is used to horizontally flip the workpiece to be tested by 180°, and the second ultrasonic detection probe is used to detect the other side of the workpiece to be tested; the flipping mechanism can move up and down in the vertical direction and horizontally move in the direction perpendicular to the transportation guide rail; the first and second ultrasonic detection probes can move in three dimensions of up and down, left and right, and front and back and rotate around the central axis.

[0006] The basic principle of this solution is as follows: The workpiece to be tested is fed into the water immersion detection end in a flowing manner through the loading guide rail. The workpiece to be tested is successively conveyed on the transport guide rail of the water immersion detection end. First, the weld on one side of the reference surface of the workpiece to be tested is completed by the first ultrasonic detection probe. Then, the workpiece to be tested is flipped 180 degrees by the flipping mechanism, and the weld on the other side of the reference surface of the workpiece to be tested is completed by the second ultrasonic detection probe, so as to complete the batch ultrasonic detection of the workpiece to be tested.

[0007] The beneficial effect of this solution is as follows: When detecting the welding qualification rate of the water-cooled heat sink after brazing, the detection positions include the nozzle weld, the circumferential weld of the product, and the seal seat weld. Originally, three different detection stations were required to perform ultrasonic water immersion detection on the three weld positions respectively, and the detection cycle was 3 min / piece, with low efficiency and unable to meet the requirements of mass production. This solution combines three independent detection devices into one detection device to achieve one-piece flow production, improve the detection efficiency and the stability of detection. After optimization, this detection is realized in the same device, and the detection cycle is 30 S / piece. The efficiency is increased by 5 times.

[0008] Furthermore, the number of the first ultrasonic detection probes is 1, which is used to detect the nozzle weld of the workpiece to be tested. The number of the second ultrasonic detection probes is 2, and each second ultrasonic detection probe is used to detect the circumferential weld of the product and the seal seat weld of the workpiece to be tested. The seal seat and the circumferential part of the water-cooled heat sink are on the same side, and the water nozzle is on the other side. According to the principle of water immersion ultrasonic detection, the height difference between the seal seat and the circumferential part can be included in the detection range. Therefore, the seal seat and the circumferential part can be combined and detected in the same process.

[0009] Furthermore, the loading guide rail is a belt-type conveying guide rail. Axially horizontal rollers are respectively arranged at both ends of the loading guide rail. A belt is connected between the two rollers. A plurality of receiving jigs are arranged at intervals on the surface of the belt along the length of the belt. The receiving jig includes two C-shaped support blocks with upward openings. The two support blocks are connected by a metal bracket. The width of the workpiece to be tested matches the opening of the C-shaped support block. The workpiece to be tested is clamped and lifted by the receiving jig, so that the transportation of the workpiece to be tested is stable.

[0010] Furthermore, an infrared sensor is arranged at the tail end of the loading guide rail. The infrared sensor and the loading manipulator are both electrically connected to an external controller. The detection end of the infrared sensor faces the tail of the loading guide rail. When the workpiece to be tested moves into the detection range of the infrared sensor, the loading manipulator clamps the detection workpiece and places it on the water immersion detection section. The infrared sensor is used to accurately load the workpiece to be tested into the water immersion detection section after detection.

[0011] Further, a number of support sliders are slidably connected above the transport guide rail. The top surface of the support slider is provided with two rows of limit posts, and the distance between the two rows of limit posts matches the width of the workpiece to be measured. This enables the stable transportation of the entire workpiece to be measured between different workstations during water immersion measurement.

[0012] Further, positioning posts are vertically provided below the transport guide rail. The positioning posts match the vertical through holes of the workpiece to be measured. The positioning posts are vertically connected to the output end of an external telescopic cylinder, and the telescopic movement of the telescopic cylinder can drive the positioning posts to move up and down through the through holes. This stably positions the support slider of the entire workpiece to be measured at the detection station and the flipping station. Description of the Drawings

[0013] Figure 1 Schematic diagram of the position to be detected of the water-cooled heat dissipation plate in the embodiment of the present invention;

[0014] Figure 2 Overall schematic diagram of the embodiment of the present invention;

[0015] Figure 3 Schematic diagram of the inlet conveying section in the embodiment of the present invention;

[0016] Figure 4 Schematic diagram of the water immersion detection section in the embodiment of the present invention;

[0017] Figure 5 Schematic diagram of the water immersion detection section in the embodiment of the present invention;

[0018] Figure 6 Schematic diagram of the ultrasonic detection probe in the embodiment of the present invention;

[0019] Figure 7 Schematic diagram of the flipping mechanism in the embodiment of the present invention;

[0020] Figure 8 Schematic diagram of the flipping mechanism in the embodiment of the present invention;

[0021] Figure 9 Schematic diagram of the clamping block on the flipping mechanism in the embodiment of the present invention. Detailed Description of the Embodiment

[0022] The following is a further detailed description through specific embodiments:

[0023] The reference numerals in the drawings of the specification include: workpiece to be measured 1, nozzle weld 101, circumferential weld 102, seal seat weld 103, inlet transfer section 2, immersion testing section 3, loading guide rail 201, receiving fixture 202, infrared sensor 203, loading manipulator 204, immersion tank 301, transport guide rail 302, support slide 303, limit post 304, first ultrasonic testing probe 305, flipping mechanism 306, mounting bracket 3061, second ultrasonic testing probe 307, positioning post 401, rotary cylinder 402, clamping block 403, receiving groove 404, first linear guide rail 405, second linear guide rail 406, vertical rod 501, receiving box 502, panel 503, and detection through-hole 504.

[0024] The embodiment is basically as shown in the attached Figure 1 to the attached Figure 9 as shown:

[0025] Through the research of the company's technical personnel, a new detection process that can improve the product detection efficiency is proposed. As shown in Figure 1 it can be seen that surface A is the reference surface. Among them, the seal seat weld 103 and the circumferential weld 102 of the product are on the same side of the reference surface. The height difference between the two welds can be included in the immersion detection range of the ultrasonic wave. Therefore, the seal seat weld 103 and the circumferential weld 102 can be combined and detected in the same process, while the nozzle weld 101 is on the other side of the reference surface A, and the nozzle weld 101 is detected separately in one process.

[0026] A ultrasonic detection mechanism suitable for the above detection process is proposed, including an inlet transfer section 2 and an immersion testing section 3 connected in sequence. Among them, the inlet transfer section 2 includes a loading guide rail 201 horizontally arranged on the ground. The loading guide rail 201 is a belt-type transfer guide rail. Axially horizontal rollers are provided at both ends of the loading guide rail 201, and a belt is connected between the two rollers. A number of receiving fixtures 202 are arranged at intervals along the length of the belt on the upper surface of the belt. The receiving fixture 202 includes two C-shaped support blocks with openings upward, and the two support blocks are connected by a metal bracket. The width of the workpiece to be measured 1 matches the opening of the C-shaped support block. The workpiece to be measured 1 can be clamped on the belt of the loading guide rail 201 through the support block, so that the workpiece to be measured 1 moves forward with the belt towards the immersion testing section 3.

[0027] An infrared sensor and a loading manipulator 204 are provided between the loading guide rail 201 and the immersion testing section 3. The detection end of the infrared sensor faces the tail of the loading guide rail 201. When the workpiece to be measured 1 moves and enters the detection range of the infrared sensor, the loading manipulator 204 clamps the workpiece to be measured 1 onto the immersion testing section 3.

[0028] The water immersion detection section 3 is horizontally arranged at the tail of the loading guide rail 201. The water immersion detection section 3 includes a water immersion tank 301 in the shape of a long strip box. A transport guide rail 302 is horizontally arranged at the bottom of the water immersion tank 301. A plurality of support sliders 303 are slidably connected above the transport guide rail 302. The top surface of the support slider 303 can hold the workpiece 1 to be tested. Specifically, four limit posts 304 are arranged on the top surface of the support slider 303, and the limit posts 304 are distributed in a 2*2 matrix. The distance between the two rows of limit posts 304 matches the width of the workpiece 1 to be tested. Thus, when the loading manipulator 204 places the workpiece 1 to be tested on the support slider 303, the two rows of limit posts 304 can clamp the workpiece 1 to be tested.

[0029] A first ultrasonic detection probe 305, a flipping mechanism 306, and a second ultrasonic detection probe 307 are arranged in sequence along the traveling direction of the transport guide rail 302. The number of the first ultrasonic detection probes 305 is one, which is used to detect the nozzle weld 101 on the workpiece 1 to be tested. The number of the second ultrasonic detection probes 307 is two, which are used to detect the circumferential weld 102 and the seal seat weld 103 of the product on the workpiece 1 to be tested. And since the detection speed of the nozzle weld 101 is faster than the detection speed of the circumferential weld 102 plus the seal seat weld 103, by setting two second ultrasonic detection probes 307, the circumferential weld 102 and the seal seat weld 103 of two workpieces can be detected simultaneously. The first and second ultrasonic detection probes can move in three dimensions of up and down, left and right, and front and back and rotate along the central axis.

[0030] In order to position the support slider 303 at the above ultrasonic detection probe and the flipping mechanism 306, positioning posts 401 are also arranged below the transport guide rail 302 where the support slider 303 needs to stop at each place. The number of positioning posts 401 at each place is 3. The left and right ends of the workpiece 1 to be tested are provided with vertical nozzle through holes, and at the same time, a vertical through hole is also opened at the center of the support slider 303. The three positioning posts 401 respectively correspond to the nozzle through holes of the workpiece 1 to be tested and the through hole at the center of the support slider 303. The lower ends of the three positioning posts 401 are respectively connected to the output ends of the peripheral telescopic cylinders. Through the expansion and contraction of the output ends of the telescopic cylinders, the positioning posts 401 are driven to move up and down through the through holes to accurately position the workpiece 1 to be tested.

[0031] The first and second ultrasonic detection probes are respectively installed on the driving mechanism. The driving mechanism includes a first linear guide rail 405 and a second linear guide rail 406. The first linear guide rail 405 is perpendicular to the transportation guide rail 302 and is horizontally arranged. The second linear guide rail 406 is vertically arranged on the first linear guide rail 405. The second linear guide rail 406 is connected to the slider of the first linear guide rail 405. The ultrasonic probe is fixed to the slider of the second linear guide rail 406 through a housing. Thus, through the movement of the first linear guide rail 405 and the second linear guide rail 406, the ultrasonic probe can be driven to move freely in the vertical and horizontal directions. The housing of the ultrasonic probe includes a vertical rod 501 and a receiving box 502. The ultrasonic probe is horizontally fixed in the receiving box 502. A detection through hole 504 through which the end of the ultrasonic probe can pass is formed on the side wall of the receiving box 502. And the side wall of the receiving box 502 is a detachable panel 503, which is convenient for disassembling and assembling the ultrasonic probe during maintenance. The upper end of the vertical rod is key-connected to the output shaft of the motor. By driving the motor, the ultrasonic detection probe can rotate along the vertical rod.

[0032] The flipping mechanism 306 includes a mounting frame 3061 that can move up and down. Two rotating cylinders 402 that can move relative to each other are provided at the bottom of the mounting frame 3061. Specifically, the mounting frame 3061 can be installed on a vertical linear guide rail, and the up and down movement of the mounting frame 3061 is driven by the vertical linear guide rail. The two rotating cylinders 402 can be respectively slidably connected to the mounting frame 3061 through horizontal linear guide rails, and the two rotating cylinders 402 can be translated relative to or away from each other through the linear guide rails. The output shafts of the two rotating cylinders 402 are oppositely arranged, and clamping blocks 403 are fixed on the output shafts. Accommodating grooves 404 that do not interfere with the end face of the workpiece 1 to be measured are formed on the opposite faces of the clamping blocks 403. The ultrasonic detection probe, the driving mechanism, and the flipping mechanism 306 are all electrically connected to an external controller, and the start and stop of the probe, the driving mechanism, and the flipping mechanism 306 are controlled by the controller.

[0033] A blanking manipulator is provided at the end of the water immersion detection section 3. The blanking manipulator is used to move the workpiece that has been detected on the support slide 303 out of the water immersion tank 301 and send the workpiece to the subsequent water blowing process, so that the water stains and dust on the surface of the workpiece are blown away to keep the workpiece clean.

[0034] The specific implementation process is as follows:

[0035] The workpiece 1 to be measured is first located on the loading guide rail 201 of the entrance conveying section 2. With the transmission of the belt, the workpiece 1 to be measured moves into the detection range of the infrared sensor 203. The loading manipulator 204 receives the signal and grabs the workpiece 1 to be measured, and transfers the workpiece 1 to be measured to the subsequent water immersion detection section 3.

[0036] The loading manipulator 204 places the workpiece 1 to be measured on the top surface of the support slide 303 on the transportation guide rail 302 in the water immersion tank 301. The transportation guide rail 302 conveys the support slide 303 to the first ultrasonic detection probe. The telescopic cylinder is activated, and the positioning column 401 extends upward through the through holes of the workpiece 1 to be measured and the support slide 303. After positioning, the first linear guide rail 405 and the second linear guide rail 406 are activated, driving the ultrasonic detection probe to move above the workpiece 1 to be measured and then downward below the liquid level of the water immersion tank 301. The controller controls the first linear guide rail 405 and the second linear guide rail 406 to drive the ultrasonic probe to scan the nozzle weld 101 on the workpiece 1 to be measured. After the ultrasonic detection of the nozzle weld 101 is completed, the workpiece 1 to be measured enters below the flipping mechanism 306.

[0037] The two rotating cylinders 402 on the flipping mechanism 306 move relative to each other, driving the two clamping blocks 403 on the rotating cylinders 402 to respectively abut against the two end side walls of the workpiece 1 to be measured and clamp the two ends of the workpiece 1 to be measured. The rotating cylinder 402 is activated to flip the workpiece 1 to be measured by 180 degrees, and then the workpiece 1 to be measured is placed back on the support slide 303. After flipping, the workpiece 1 to be measured is sent by the transportation guide rail 302 to the second detection probe. The second detection probe also moves under the action of its first linear guide rail 405 and second linear guide rail 406.

[0038] After the second detection probe completes the detection of the seal seat weld 103 and the circumferential weld 102 of the workpiece 1 to be measured, the unloading manipulator removes the workpiece from the support slide 303 and sends the workpiece into the subsequent water blowing process to blow the water stains on the workpiece surface clean.

[0039] The above are only the embodiments of the present utility model. Common knowledge such as specific structures and characteristics known in the solution is not described in detail here. It should be noted that for those skilled in the art, without departing from the structure of the present utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicability of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to explain the content of the claims.

Claims

1. An ultrasonic detection mechanism, characterized in that: It includes an entrance conveying section and a water immersion detection section connected in sequence, the entrance conveying section includes a horizontally arranged loading guide rail, a loading robot is provided between the tail end of the loading guide rail and the front end of the water immersion detection section, the loading robot can transfer the workpiece to be tested to the water immersion detection section, the water immersion detection section includes a water immersion tank and a transport guide rail horizontally arranged in the water immersion tank, a first ultrasonic detection probe, a flipping mechanism, and a second ultrasonic detection probe are provided in sequence along the transport guide rail, the transport guide rail can be used to transport the workpiece to be tested to the tail end of the water immersion tank, the first ultrasonic detection probe is used to detect one side of the workpiece to be tested, the flipping mechanism is used to flip the workpiece to be tested horizontally by 180°, and the second ultrasonic detection probe is used to detect the other side of the workpiece to be tested; the flipping mechanism can move up and down in the vertical direction and move horizontally in a direction perpendicular to the transport guide rail, the first and second ultrasonic detection probes can move in three dimensions of up and down, left and right, and front and back, and rotate along the central axis.

2. An ultrasonic detection mechanism according to claim 1, characterized in that: The number of the first ultrasonic detection probe is 1, which is used to detect the nozzle weld of the workpiece to be tested. The number of the second ultrasonic detection probes is 2, and each second ultrasonic detection probe is used to detect the circumferential weld and sealing seat weld of the workpiece to be tested.

3. An ultrasonic detection mechanism according to claim 2, characterized in that: The loading guide rail is a belt-type conveyor guide rail, and axially horizontal rollers are respectively provided at both ends of the loading guide rail, a belt is connected between the two rollers, and a plurality of receiving clamps are arranged at intervals on the belt surface along the length of the belt, and the receiving clamps include two C-shaped support blocks with openings facing upward, and the two support blocks are connected by a metal bracket, and the width of the workpiece to be measured matches the opening of the C-shaped support block.

4. An ultrasonic detection mechanism according to claim 3, characterized in that: An infrared sensor is provided at the tail end of the feeding guide rail. The infrared sensor and the feeding robot are electrically connected to the peripheral controller. The detection end of the infrared sensor is facing the tail end of the feeding guide rail. When the workpiece to be tested moves to the detection range of the infrared sensor, the feeding robot clamps the test workpiece to the water immersion detection section.

5. An ultrasonic detection mechanism according to claim 4, characterized in that: A plurality of support slides are slidably connected above the transport guide rails. Two rows of limit columns are arranged on the top surface of the support slides. The distance between the two rows of limit columns matches the width of the workpiece to be measured.

6. An ultrasonic detection mechanism according to claim 5, characterized in that: A positioning column is vertically provided below the transport guide rail, the positioning column matches the vertical through hole of the workpiece to be measured, and the positioning column is vertically connected to the output end of an external telescopic cylinder. The telescopic cylinder can be extended and retracted to drive the positioning column to move up and down through the through hole.

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