A production test monitoring system for power transformers

Abstract

The present invention discloses a production test monitoring system for a power transformer, including a quality inspection line. A coding mechanism is provided at the inlet end of the quality inspection line for coding the power transformers flowing into the quality inspection line. A number of detection devices are sequentially arranged on the quality inspection line from the inlet end to the outlet end. A coding recognition device is provided in each group of detection devices to record the coding information on the power transformers flowing into / out of the detection device. The coding recognition device is a CCD camera. Each group of coding recognition devices is connected to the monitoring system. Therefore, the monitoring system can accurately read the detection and factory information of each group of qualified power transformers and the specific detection process in which the defective products are detected. It is convenient for manufacturers to directly obtain the detection results, with high detection efficiency, providing data support for subsequent equipment and process improvements and industrial big data, and reducing labor input.

Description

Technical Field

[0001] The present invention belongs to the technical field of power transformer production, and particularly relates to a production test monitoring system for power transformers. Background Art

[0002] A power transformer is a soft magnetic electromagnetic component, whose functions are power transmission, voltage transformation, and insulation isolation, and it is widely used in power technology and power electronics technology.

[0003] Power transformers are mass-produced using an assembly line. After production, quality inspection and testing are required for the finished products to eliminate unqualified products. A single power transformer produced needs to go through multiple processes such as high-voltage testing and common-mode testing. Currently, there is no comprehensive set of testing equipment for the above-mentioned testing processes in the industry. Each testing process is carried out separately, and the test results of each testing process are independent of each other (such as the defective rate of each test). Therefore, the final manufacturer can only obtain the overall qualification rate of each testing link. Since a single power transformer product cannot be individually identified and marked, it is impossible to know which testing link a specific power transformer is detected as defective in the end. The manufacturer cannot effectively monitor the factory information of each product, which is not conducive to improving the process and equipment in the production link. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the background art and provide an automated power transformer production test monitoring system to improve the quality and efficiency of power transformer testing.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] A power transformer production test monitoring system includes a quality inspection line. At the inlet end of the quality inspection line, there is a coding mechanism for coding the power transformers flowing into the quality inspection line. From the inlet end to the outlet end of the quality inspection line, there are several detection devices in sequence. In each group of detection devices, there is coding identification equipment to record the coding information on the power transformers flowing into / out of the detection device. The coding identification equipment is a CCD camera.

[0007] The quality inspection line includes: a coding detection device for detecting whether the coding of the power transformer is normal; a common-mode detection device for detecting the common-mode noise of the power transformer, a fitting detection device for fitting and testing the pins of the power transformer, a high-voltage detection device for performing high-voltage withstand testing on the power transformer, a pin cutting detection device for cutting and testing the pins of the power transformer, and a comprehensive testing device for detecting the electrical performance of the power transformer.

[0008] The inkjet detection device includes: an inkjet circulation conveying mechanism for conveying the power transformer to be detected; a vision detection system for detecting the inkjet of the power transformer, which is arranged above the inkjet circulation conveying mechanism; a sorting handling mechanism for handling the power transformer after the detection is completed. The inkjet handling mechanism is connected to a PLC controller, and the PLC controller is connected to the vision detection system. The inkjet handling mechanism includes a second handling manipulator and a synchronous belt module. The synchronous belt module includes a linear guide rail and a second conveying line parallel to the linear guide rail; the second handling manipulator is connected to the second conveying line and is slidably matched with the linear guide rail, so that the second handling manipulator can slide along the linear guide rail under the drive of the second conveying line; a defective product recycling mechanism. Both the defective product recycling mechanism and the circulation conveying mechanism are arranged within the sliding stroke range of the second handling manipulator on the linear guide rail, so that the second handling manipulator can sort the power transformer with abnormal inkjet on the circulation conveying mechanism onto the defective product recycling mechanism.

[0009] The common-mode detection device includes: a base, on which a placement fixture and a pneumatic component are provided. The placement fixture is used to carry the power transformer; a detection probe is arranged on the pneumatic component, and the detection probe is located on both sides of the placement fixture. The pneumatic component can drive the detection probe to detect the power transformer on the placement fixture; and the placement fixture and the pneumatic component can slide relative to each other along the height direction of the placement fixture.

[0010] The fitting detection device includes: a fitting detection probe; a guiding template, which is provided with a receiving cavity for placing the power transformer. The bottom of the receiving cavity is provided with pin through holes, and the pins of the power transformer can pass through the pin through holes to be docked with the fitting detection probe; the fitting detection device further includes: a push-pull rod, and a first pull rod through hole is further provided at the bottom of the receiving cavity. The push rod is placed in the first pull rod through hole; a push-pull rod moving mechanism, the first end of the push-pull rod is connected to the push-pull rod moving mechanism, and a magnetic adsorbing component for adsorbing the power transformer placed in the receiving cavity is arranged at the second end of the push-pull rod.

[0011] The high-voltage detection device includes: a high-voltage detection machine platform, on which a circular track, a high-voltage detection conveying mechanism, a high-voltage detection mechanism and a high-voltage detection clamping mechanism are provided; a plurality of clamping toolings sliding along the circular track are arranged on the circular track, and a loading position and an unloading position are respectively arranged on the circular track; the high-voltage detection conveying mechanism is used to drive the plurality of clamping toolings to slide along the circular track; the high-voltage detection mechanism is used to detect the power transformer on the clamping tooling between the loading position and the unloading position; the high-voltage detection clamping mechanism is used to clamp the power transformer to be detected to the loading position, or clamp the power transformer at the unloading position for unloading.

[0012] The pin-cutting detection device includes a pin-cutting detection machine table, on which a pin-cutting detection clamping mechanism, a pin-cutting mechanism and a pin-cutting detection mechanism are arranged; the pin-cutting detection clamping mechanism is used to clamp the power transformer and sequentially pass it through the pin-cutting mechanism and the pin-cutting detection mechanism and then discharge it. The pin-cutting mechanism includes a pin-cutting table and a cutting component. The pin-cutting table is provided with a first placement groove, and the bottom of the first placement groove is provided with a pin-cutting hollow channel for passing through the pins to be cut. And the air cutting part of the cutting component is correspondingly arranged below the pin-cutting hollow channel, and the lower end surface of the pin-cutting hollow channel is the cutting surface.

[0013] Due to the adoption of the above technical solution, the beneficial effect of the present invention is:

[0014] The power transformer production test monitoring system of the present invention includes an inspection assembly line for inspecting and testing the produced power transformers. A coding detection device is provided at the initial end of the inspection assembly line to perform coding marking on each power transformer entering the inspection assembly line, and coding recognition devices are provided in each subsequent inspection link to read the coding on the power transformer entering this link. Each group of coding recognition devices is connected to the monitoring system. Therefore, the monitoring system can accurately read the inspection and factory information of each group of qualified power transformers and the specific inspection process in which the defective products are detected as defective, which is convenient for the manufacturer to directly obtain the inspection results, with high inspection efficiency, providing data support for subsequent equipment and process improvements and industrial big data, and reducing labor input. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the power transformer production test monitoring system of the present invention;

[0016] Figure 2 is a perspective view of the coding detection device of the present invention;

[0017] Figure 3 is Figure 2 an enlarged view of part A of

[0018] Figure 4 is Figure 2 an enlarged view of part B of

[0019] Figure 5 is Figure 4 an enlarged view of part C of

[0020] Figure 6 is Figure 3 an enlarged view of part D of

[0021] Figure 7 is a schematic diagram of the structure of the common mode detection device of the present invention;

[0022] Figure 8 is Figure 7 an enlarged view of part A in

[0023] Figure 9 is Figure 7 an enlarged view of part B in ;

[0024] Figure 10 is Figure 7 an enlarged view of part C in ;

[0025] Figure 11 a schematic structural view of the common - mode detection mechanism of the present invention;

[0026] Figure 12 a front view of the common - mode detection device of the present invention;

[0027] Figure 13 a top view of the common - mode detection device of the present invention;

[0028] Figure 14 a side view of the common - mode detection device of the present invention;

[0029] Figure 15 is a schematic structural view of the fitting detection device of the present invention;

[0030] Figure 16 is a schematic structural view of the power transformer moving mechanism of the present invention;

[0031] Figure 17 is a front view of the fitting detection device of the present invention;

[0032] Figure 18 is a left - hand sectional view of the fitting detection device of the present invention;

[0033] Figure 19 is the usage state under the left - hand sectional view of the fitting detection device of the present invention;

[0034] Figure 20 is a front view of the high - voltage detection device of the present invention;

[0035] Figure 21 is Figure 20 an enlarged view of part A in ;

[0036] Figure 22 is Figure 20 an enlarged view of part B in ;

[0037] Figure 23 is an isometric view of the high - voltage detection device of the present invention;

[0038] Figure 24 is Figure 23 an enlarged view of part C in ;

[0039] Figure 25 is Figure 23 an enlarged view of part D in ;

[0040] Figure 26 is the top view of the high-voltage detection device of the present invention;

[0041] Figure 27 is Figure 26 the enlarged view of part E in

[0042] Figure 28 is Figure 26 the enlarged view of part F in

[0043] Figure 29 is the front view of the lead-trimming detection device of the present invention;

[0044] Figure 30 is Figure 29 the enlarged view of part A in

[0045] Figure 31 is the structural schematic diagram of the lead-trimming table and the foot-measuring table cooperating to adjust the bottom plate of the present invention;

[0046] Figure 32 is the side sectional view of the lead-trimming table;

[0047] Figure 33 is the top view of the lead-trimming detection device of the present invention;

[0048] Figure 34 is the isometric view of the lead-trimming detection device of the present invention; Detailed implementation manners

[0049] A power transformer production test and monitoring system is used for the comprehensive detection, testing and monitoring of the quality of the produced power transformer products. According to the detection process requirements, it includes 6 processes: inkjet coding and inkjet coding detection, common mode detection, pin fitting detection, high-voltage detection, lead trimming detection and comprehensive testing. It should be noted that: the use sequence of the 6 detection processes disclosed in the following specific embodiments and the detection devices used for each corresponding detection process belongs to the preferred embodiments of the present invention. Under the technical inspiration brought by the present invention solution, various adjustments and transformations made by those skilled in the art to the use sequence of the above 6 detection processes and the corresponding detection equipment should fall within the protection scope of the present invention.

[0050] Such as Figure 1As shown, the power transformer production test and monitoring system includes a quality inspection line and a coding and identification device 7. The quality inspection line includes a total of six inspection devices, namely, a coding inspection device 1, a high-voltage inspection device 4, a lead trimming inspection device 5, a comprehensive test device 6, a common-mode inspection device 2, and a pin fitting inspection device 3000, which are arranged in sequence from the inlet end to the outlet end. Among them, a coding mechanism 130 is provided at the inlet end of the quality inspection line for coding the power transformer, and coding and identification devices 7 are installed on the subsequent five inspection devices arranged in sequence for recording the coding information of the qualified power transformers flowing into / out of the inspection device. Specifically as follows:

[0051] As Figure 2 As shown, the coding inspection device 1 is used to detect whether the coding of the power transformer 1a coded on the coding production line is normal and pick out the power transformers 1a with abnormal coding. It includes a vibration feeding mechanism 100, a cylinder handling mechanism 110, a coding circulating conveying mechanism 120, a coding mechanism 130, a vision inspection system 140, a coding handling mechanism 150, a defective product recycling mechanism 160, a finished product output mechanism 170, and an inspection platform 180.

[0052] As Figure 3 As shown, the vibration feeding mechanism 100 is installed above the inspection platform 180. The vibration feeding mechanism 100 adopts the existing technology and is connected with a digital leveling vibration feeding controller (not shown in the figure). Structurally, the vibration feeding mechanism 100 includes a long strip-shaped feeding plate 1001 for conveying the power transformer 1a. A feeding groove is opened on the feeding plate 1001 along the long strip extension direction. Several power transformers 1a are placed in the feeding groove. A vibration generator 1002 is provided below the feeding plate 1001 to drive the feeding plate 1001 to vibrate and feed. A shock absorber 1003 is also provided at the lower end of the vibration feeding mechanism 100. An end support mechanism 1005 of the feeding plate is vertically established on the inspection platform 180, and the upper end of the end support mechanism 1005 of the feeding plate is connected to the end of the feeding plate 1001 in the conveying direction.

[0053] The cylinder handling mechanism 110 is disposed on one side of the inspection platform 180 close to the end support mechanism 1005 of the feeding plate. The cylinder handling mechanism 110 includes a first handling manipulator 1101, a handling cylinder 1102, and a handling mechanism support 1103. The handling mechanism support 1103 is vertically installed on the inspection platform 180. The handling cylinder 1102 adopts a rodless cylinder structure and is horizontally installed on the handling mechanism support 1103, that is, the reciprocating movement direction of the piston in the handling cylinder 1102 is parallel to the plane of the inspection platform 180 and parallel to the conveying direction of the power transformer 1a in the vibrating feeding mechanism 100. The piston in the handling cylinder 1102 is drivingly connected to the first handling manipulator 1101, that is, the first handling manipulator 1101 can move back and forth along the reciprocating movement direction of the piston under the drive of the handling cylinder 110.

[0054] Such as Figure 3 , Figure 4 And Figure 6As shown in the figure, the cyclic conveying mechanism 120 includes a first conveyor belt 1201, product placement stations 1202, guide bars 1203, a counterweight 1204, a guide groove 1205, a wedge-shaped transition surface 1206, and an inkjet cyclic drive motor 1207. The inkjet cyclic drive motor 1207 is connected to the first conveyor belt 1201 as a driving mechanism, and the first conveyor belt 1201 is collinear with the axis where the material conveying plate 1001 is located. The cylinder handling mechanism 110 is arranged between the vibrating feeding mechanism 100 and the cyclic conveying mechanism 120; the cylinder handling mechanism 110 is connected to the PLC control system, and a position and light sensor is provided at the end of the material conveying plate 1001. The first handling robot 1101 moves to the end of the material conveying plate 1001 driven by the handling cylinder 1102, and the first handling robot 1101 grabs the power transformer 1a conveyed to the end of the material conveying plate 1001 and moves it onto the first conveyor belt 1201. A number of product placement stations 1202 for fixing the power transformer 1a are provided on the first conveyor line 1201. Each group of product placement stations 1202 is provided with a group of grooves that match the contour of the power transformer 1a, and magnets are provided in the grooves to adsorb the power transformer 1a, so that the power transformer 1a will not fall off the first conveyor line 1201 under the action of gravity during the process of moving from the first end close to the cyclic conveying mechanism 120 to the second end along the upper surface of the first conveyor line 1201 and then turning back along the lower surface (i.e., moving from the second end to the first end along the lower surface of the first conveyor line 1201); two groups of guide bars 1203 are also provided on the inkjet cyclic mechanism 120. The two groups of guide bars 1203 are arranged on both sides of the belt surface of the first conveyor line 1201, and a number of product placement stations 1202 are all located between the two groups of guide bars 1203. Wedge-shaped transition surfaces 1206 are provided on the surfaces of the two groups of guide bars 1203 on both sides of the first end of the first conveyor line 1201, so that the belt surface width of the first end of the first conveyor line 1201 gradually decreases from the end to the inside. The power transformer 1a is limited by the two groups of guide bars 1203 during the conveying process on the first conveyor line 1201 and will not sway left and right; the wedge-shaped transition surface 1206 is actually a group of guide block structures protruding from the guide bar 1203. The guide blocks extend along the conveying direction of the first conveyor line 1201, and the side of the guide block close to the first end is a wedge-shaped structure; a counterweight 1204 is installed at the lower end of the product placement station 1202. The counterweight 1204 is fixed on the first conveyor line 1201, and a guide groove 1205 that matches the guide block is provided on the side surface of the counterweight 1204.

[0055] On both sides of the first end of the first conveyor line 1201 of the cyclic conveyor mechanism 120, a plurality of groups of light sensors are provided. The light sensors are connected to the PLC control system. The distance between adjacent two product placement stations 1202 is equal to the distance between adjacent two groups of light sensors on the same side of the first conveyor line 1201. When the first handling manipulator 1101 transports the power transformer 1a to the product placement station 1202, all the product placement stations 1202 can be aligned with the light sensors. After the placement at the previous product placement station 1202 is completed, the next product placement station 1202 automatically moves and aligns.

[0056] As Figure 2 and Figure 4 shown, the inkjet coding mechanism 130 is used to inkjet code the power transformer 1a. Using the prior art, the inkjet coding mechanism 130 is arranged above the first conveyor belt 1201 and is supported on the detection platform by the first support member 1801; the vision detection system 140 is arranged above the inkjet coding cyclic conveyor mechanism 120 and is connected to the PLC control system. The vision detection system 140 is supported on the detection platform 180 by the first support member 1801. The vision detection system 140 is used to detect the inkjet coding information on the power transformer 1a. The vision detection system 140 includes a graphics processing unit and an image acquisition unit which are connected to each other; the image acquisition unit, in this example, is an industrial network port camera produced by Medvision. The vision detection system 140 is used to detect and judge the inkjet coding abnormality on the power transformer 1a.

[0057] As Figure 2 and Figure 5As shown, the inkjet handling mechanism 150 is supported on the detection platform 180 by the second support member 1802. The inkjet handling mechanism 150 is connected to the PLC controller, and the PLC controller is connected to the vision detection system 140. The inkjet handling mechanism 150 is used for the power transformer 1a after detection. The inkjet handling mechanism 150 includes a second handling manipulator 1501 and a synchronous belt module 1505. The synchronous belt module 1505 includes a linear guide 1503 and a second conveyor line 1504 parallel to the linear guide 1503. The second conveyor line 1504 is connected to an inkjet handling drive motor 1502. The second handling manipulator 1501 is connected to the second conveyor line 1504 and is slidably engaged with the linear guide 1503. That is, the second handling manipulator 1501 is provided with a manipulator sliding part 1501b slidably engaged with the linear guide 1503 and a manipulator fixing part 1501a fixedly connected to the conveyor belt surface of the second conveyor line 1504. The two ends of the second conveyor line 1504 are respectively a first pulley 1504a and a second pulley 1504b. The output shaft of the inkjet handling drive motor 1502 is connected to the first pulley 1504a, and a drag chain 1506 for fixing wires is also provided thereon. The second handling manipulator 1501 can slide along the linear guide 1503 driven by the second conveyor line 1504. When the power transformer 1a is conveyed to the second end of the first conveyor line 201, the second handling manipulator 1501 sorts the power transformer 1a detected by the vision detection system 140 into the defective product recycling mechanism 160 or the finished product output mechanism 170 according to whether the inkjet is abnormal under the control of the PLC system.

[0058] As Figure 4 As shown, the defective product recycling mechanism 160. The defective product recycling mechanism 160 and the circulating conveyor mechanism 120 are both arranged within the sliding stroke range of the second handling manipulator 1501 on the linear guide 1503. The finished product output mechanism 170 is arranged on the extension line of the axis where the second end of the first conveyor line 1201 is located. The defective product recycling mechanism 160 includes a third conveyor belt 1601 and a defective product conveying drive mechanism 1602 for driving the third conveyor belt 1601. In the top view direction, the third conveyor belt 1601 is perpendicular to the finished product output mechanism 170. In practice, the third conveyor belt 1601 is higher than the plane where the finished product output mechanism 170 is located. The inkjet handling mechanism 150 is arranged between the finished product output mechanism 170 and the second end of the first conveyor line 1201. The power transformer 1a with abnormal inkjet after detection is sorted by the second handling manipulator 1501 onto the defective product recycling mechanism 160, and the power transformer 1a with normal inkjet is sorted onto the finished product output mechanism 170. The power transformer 1a conveyed onto the defective product recycling mechanism 160 is recycled. The finished product output mechanism 170 is connected to the high-voltage detection conveyor mechanism 44 of the high-voltage detection device 4 to perform high-voltage detection on the power transformer 1a after inkjet detection.

[0059] As Figures 20 - 28 shown, the high-voltage detection device 4 is arranged behind the inkjet detection device 1 and includes a high-voltage detection machine platform 41. A circular guide rail 42, a high-voltage detection conveying mechanism 44, a high-voltage detection mechanism 45, and a high-voltage detection clamping mechanism 46 are arranged on the high-voltage detection machine platform 41. A plurality of high-voltage detection clamping jigs 43 for placing the power transformer 1a can be slidably arranged on the circular guide rail 42. The high-voltage detection conveying mechanism 44 drives a plurality of high-voltage detection clamping jigs 43 to slide along the circular guide rail 42. Loading positions and unloading positions are respectively arranged on two opposite tracks of the circular guide rail 42. At the same time, the high-voltage detection mechanism 45 is located between the loading position and the unloading position, and the high-voltage detection mechanism 45 is used to detect the power transformer 1a to obtain qualified products and unqualified products. When the high-voltage detection mechanism 45 performs a withstand voltage test on the power transformer 1a, the high-voltage detection clamping mechanism 46 clamps the power transformer 1a to be tested for loading at the loading position and clamps the power transformer 1a at the unloading position for unloading.

[0060] In the traditional method, the power transformers 1a are manually placed on the corresponding detection devices one by one for testing, and after the testing is completed, the power transformers 1a are placed on the corresponding strips for storage, resulting in relatively low production efficiency. In this solution, the high-voltage detection conveying mechanism 44 drives a plurality of clamping jigs 43 to slide along the circular guide rail 42, enabling the clamping jigs 43 to be reused, and realizing the loading, detection, and unloading of the power transformers 1a on the clamping jigs 43 during the circular movement of the clamping jigs 43, shortening the process time and improving the production efficiency.

[0061] In this solution, the circular guide rail 42 includes a plurality of straight pipe segments 4201. Two adjacent straight pipe segments 4201 are perpendicular to each other and are connected end to end to form a circular structure. In this embodiment, the number of straight pipe segments 4201 is four, and the number of sliding cylinders 401 is also four. However, it is easy to understand that it can also be three, five, or more than five. And two adjacent clamping jigs 43 in each straight pipe segment 4201 are connected end to end.

[0062] In order to enable the high-voltage detection and conveying mechanism 44 to drive a number of clamping tooling 43 to move in a circular motion along the annular guide rail 42, a displacement gap is left between the clamping tooling 43 at the head end and the clamping tooling 43 at the tail end. The high-voltage detection and conveying mechanism 44 includes a plurality of push cylinders 4504. A sliding cylinder 401 is provided at the bottom end of each straight pipe section 4201, and a through groove is provided at the bottom end of each straight pipe section 4201 along the length direction of the straight pipe section 4201. A sliding block 4202 is slidably arranged in the through groove, and the sliding block 4202 is connected to the sliding cylinder 401. The sliding cylinder 401 pushes the sliding block 4202 to slide in the through groove. During the sliding process of the sliding block 4202, the clamping tooling 43 located in the corresponding straight pipe section 4201 is pushed to displace to the next straight pipe section 4201, thereby realizing that the high-voltage detection and conveying mechanism 44 drives a number of clamping tooling 43 to move in a circular motion along the annular guide rail 42. Specifically, the annular track 42 in this solution is a rectangular track, and a groove is provided along the length direction of each straight pipe section 4201. The through groove is arranged at the bottom of the groove, a stroke groove is provided on the groove wall at one end of the groove, and the starting point of the stroke of the sliding block is located in the stroke groove. In this solution, the displacement gap left between the clamping tooling 43 at the head end and the clamping tooling 43 at the tail end is the width of one clamping tooling 43. However, it is easy to understand that without restricting the size of the displacement gap, as long as the sliding block can push the clamping tooling to slide, it can also be the width of two clamping tooling 43.

[0063] At the same time, in this solution, the clamping tooling 43 is a rectangular block, and the length of the clamping tooling 43 is greater than the width of the clamping tooling 43. In order to ensure that the clamping tooling 43 can be pushed, two push blocks 4202 are provided on the straight pipe section 4401 that pushes the clamped tooling 43 to move along the length direction of the clamping tooling 43, and one push block 4202 is provided on the straight pipe section that pushes the clamping tooling to move in the width direction. Of course, without restricting the number of push blocks 4202, as long as the clamping tooling 43 can be pushed.

[0064] In this solution, a number of placement slots 4301 for placing the power transformer 1a are provided on each clamping tooling 43, and a number of detection slots 4302 are provided on the opposite side walls of each clamping tooling 43. Each detection slot 4302 communicates with one placement slot 4301. The high-voltage detection mechanism 45 includes a number of feed cylinders 4501, and the number of feed cylinders 4501 are symmetrically distributed on the opposite sides of the track between the loading position and the unloading position. At least one probe detection component 4502 is provided on each feed cylinder 4501. Each probe detection component 4502 is connected to a withstand voltage tester, and a number of probe test parts equal to the number of detection slots 4302 on a single clamping tooling 43 are provided on each probe detection component 4502. The feed cylinder 4501 can push the probe test part into the detection slot 4302 to perform a withstand voltage test on the probes of the power transformer 1a placed in the corresponding placement slot 4301. When the withstand voltage coefficient of one of the power transformers 1a is unqualified, the withstand voltage tester corresponding to the probe detection component 4502 of the probe test part of the power transformer 1a detects and gives an alarm. The high-voltage detection mechanism 45 further includes a support plate 4503. The support plate 4503 is vertically arranged on the table surface of the high-voltage detection machine table 41. A push cylinder 4504 and a pressure plate 4505 are provided on the support plate 4503. The push cylinder 4504 pushes the pressure plate 4505 to move up and down along the height direction of the high-voltage detection machine table 41. At least one lead sleeve detection component 4506 is provided on the pressure plate 505. Each lead sleeve detection component 4506 is connected to a withstand voltage tester, and a number of sleeve test parts for detecting the withstand voltage performance of the lead sleeves of the power transformer 1a are provided on each lead sleeve detection component 4506. When the clamping tooling 43 with the power transformer 1a to be tested is between the loading position and the unloading position, the push cylinder 4504 pushes the sleeve test part to detect the lead sleeves of the power transformer 1a on the corresponding clamping tooling 43. Similarly, when the withstand voltage coefficient of one of the power transformers 1a is unqualified, the withstand voltage tester corresponding to the lead sleeve detection component of the lead sleeve test part of the power transformer 1a detects and gives an alarm. Only for example, the model of the withstand voltage tester in this solution is LK2670AX / 7420 / / 7440 / 9008.

[0065] In this embodiment, the high-voltage detection clamping mechanism 46 includes a support frame 4601, on which two linear motion modules 4602 are arranged, and the two linear motion modules 4602 are respectively provided with a feeding claw 4606 and a discharging claw 4607. As a specific implementation, the linear motion modules 4602 each include a feeding motor 4603, and the output shaft of the feeding motor 4603 is connected to a belt 4604 and drives the belt 4604 to do reciprocating motion. A transmission plate 605 is arranged on the belt 4604, and the feeding claw 4606 and the discharging claw 4607 are respectively arranged on the corresponding transmission plate 4605. A slide rail 4609 is arranged on one side of the belt 604, and a guide block is slidably arranged on the slide rail 4609, and the transmission plate 4605 is connected to the guide block. The feeding claw 4606 and the discharging claw 4607 are driven by the linear motion module 4602 to do lateral feeding motion. At the same time, a lifting cylinder 4608 is provided on the transmission plate 4605, and the lifting cylinder 4608 drives the loading claw 4606 and the unloading claw 4607 to move up and down along the height direction of the high-voltage detection machine 41. In this solution, the loading claw 4606 and the unloading claw 4607 are driven to move synchronously by two linear motion modules 4602, so that the high-voltage detection clamping mechanism 46 can load and unload synchronously, thereby improving production efficiency.

[0066] In a further solution, in order to further speed up the loading speed and improve production efficiency, each clamping fixture 43 is provided with a plurality of placement slots 4301 for placing the power transformer 1a. And in order to meet the same part loading of the power transformer 1a on a clamping fixture 43, the number of loading air claws 4606 and unloading air claws 4607 are both multiple, and the number of loading air claws 4606 and unloading air claws 4607 is the same as the number of placement slots 4301 on each clamping fixture 43 and corresponds one to one. Although the number of placement slots 4301 for each power transformer 1a in this solution is three, the number of loading air claws 4606 and unloading air claws 4607 are both three. However, it is easy to understand that it can also be two, four or more than four.

[0067] At the same time, a limiter is provided at the unloading position of the annular guide rail 42, and the limiter is provided on one side of the unloading position guide rail, and a protrusion is provided on the limiter along the inner side of the guide rail to prevent the clamping tool 43 from being displaced along with the power transformer 1a. Specifically, the limiter includes two Z-shaped blocks 47, and the two Z-shaped blocks 47 are respectively provided on both sides of the unloading position guide rail, and one side plate surface of the two Z-shaped blocks 47 is located above the clamping tool 43. When the unloading air claw 4607 clamps the power transformer 1a at the unloading position to unload the material, the limiter is used to prevent the unloading air claw 4607 from lifting the clamping tool 43 during the unloading process.

[0068] In addition, the present solution further includes a first belt conveyor line 48 for conveying qualified products. The first belt conveyor line 48 is located on one side of the annular guide rail 42, and a second belt conveyor line 49 for conveying unqualified products is provided between the first belt conveyor line 48 and the annular guide rail 42. When the high-voltage detection mechanism 45 detects that the test piece is unqualified, the blanking air gripper 4607 grabs the unqualified product and discharges it onto the second belt conveyor line 49. After the unqualified product is discharged, the loading air gripper 4606 grabs the test piece for loading. When the high-voltage detection mechanism 45 detects that the test piece is qualified, the blanking air gripper 4607 grabs the qualified product and discharges it onto the first belt conveyor line 48. While discharging, the loading air gripper 4606 grabs the next batch of test pieces to the loading position. A manipulator mechanism is provided between the first belt conveyor line 48 and the lead trimming detection device 5 for sorting the qualified products output from the first belt conveyor line 48 onto the lead trimming table 5201 provided on the lead trimming detection device 5.

[0069] As Figures 29 - 34 shown, the lead trimming detection device 5 includes a lead trimming detection machine table 59. A lead trimming detection clamping mechanism 51, a lead trimming mechanism 52, and a lead trimming detection mechanism 53 are provided on the lead trimming detection machine table 59. The lead trimming detection clamping mechanism 51 is used to clamp the power transformer 1a to sequentially pass through the lead trimming mechanism 52 and the lead trimming detection mechanism 53 and then discharge it. Manually placing the power transformer 1a one by one on the corresponding lead trimming equipment for lead trimming, and then placing the power transformer 1a on the corresponding detection equipment for detection after lead trimming, the production efficiency is relatively low. In this solution, the automatic displacement, lead trimming, and detection of the power transformer 1a are realized through the lead trimming detection clamping mechanism 51, improving the work efficiency.

[0070] In this solution, a bottom box 55 is further provided on the leg-cutting detection machine 59, and the leg-cutting mechanism 52 includes a leg-cutting table 5201. The leg-cutting table 5201 is arranged on the upper cover surface of the bottom box 55. Each leg-cutting table 5201 is provided with a first placement groove 5203, and a number of first hollow channels for passing through the pins are arranged at the bottom of the first placement groove 5203. The first hollow channels are divided into leg-cutting hollow channels 5204 and non-leg-cutting hollow channels 5204, and the length of the non-leg-cutting hollow channels 5204 is less than that of the leg-cutting hollow channels 5204. The leg-cutting mechanism 52 further includes a cutting component, and the cutting component includes a pneumatic shear. The cutting component is installed on the bottom box 55. A cavity is arranged inside the bottom box 55, the pneumatic shear is located inside the cavity, and the pneumatic shear part of the cutting component is correspondingly arranged below the leg-cutting hollow channel 5204. The lower end surface of the leg-cutting hollow channel 5204 is the cutting surface 5205. If only the power transformer 1a is clamped by the clamping piece in front of the cutting component for cutting, or conveyed to the front of the cutting component through a conveying mechanism such as a belt. Since the pin lengths of each power transformer 1a are different, the clamping position changes slightly, or the position of the power transformer 1a on the conveying mechanism is different, and the cutting length of the cutting component is the same, resulting in different pin lengths after cutting. If the cut pins are too long or too short, the subsequent detection of the power transformer 1a will be impossible or the detection will be distorted. In this solution, since the power transformer 1a needs to expose the cut pins through the leg-cutting table 5201, the part of the power transformer 1a covered in the leg-cutting hollow channel 5204 is constant, thus avoiding the part remaining after the cutting component cuts the pins being too long or too short.

[0071] In this embodiment, the leg-cutting detection mechanism 53 includes a foot-measuring table 5301, a probe and a circuit connection block. The foot-measuring table 5301 is provided with a second placement groove, and a number of second hollow channels for passing through the pins are arranged at the bottom of the second placement groove. The first hollow channels are divided into detection hollow channels and non-detection hollow channels. The circuit connection block is connected to the detection hollow channels, and a detection circuit is connected to the circuit connection block. The length of the detection hollow channels is the same as that of the leg-cutting hollow channel 5204. The probe is communicated with the non-detection hollow channels. Since the length of the detection hollow channels is the same as that of the leg-cutting hollow channel 5204, the length of the cut pins is exactly the same as the length from the bottom of the second placement groove to the pipe orifice of the wire tube. When the power transformer 1a is placed in the second placement groove, it can be directly detected. If the length of the pins is too short or too long, the detection will be impossible.

[0072] Moreover, an attracting member 54 for adsorbing the power transformer 1a is provided in the first placement groove 5203 of the lead trimming table 5201 of the lead trimming mechanism 52 and in the second placement groove on the angle measuring table of the lead trimming detection mechanism 53. The attracting member 54 is used to limit the position of the power transformer 1a during placement, preventing the power transformer 1a from shaking during pin cutting or detection, which may cause cutting errors or incorrect detection results. As a specific implementation manner, the attracting member 54 in this solution is a magnet. Of course, other attracting members 54 in the prior art can also be used as long as they can keep the power transformer 1a relatively stable with respect to the clamping tooling.

[0073] Meanwhile, the lead trimming detection and clamping mechanism 51 includes a first clamping member 5101, a second clamping member 5102, and a third clamping member 5103. The first clamping member 5101 clamps the power transformer 1a to be trimmed to the lead trimming mechanism 52. The second clamping member 5102 clamps the power transformer 1a to be detected on the lead trimming mechanism 52 to the lead trimming detection mechanism 53. The third clamping member 5103 clamps the power transformer 1a after detection on the lead trimming detection mechanism 53 for blanking. The first clamping member 5101, the second clamping member 5102, and the third clamping member 5103 are displaced synchronously. And the first clamping member 5101, the second clamping member 5102, and the third clamping member 5103 are displaced synchronously. During the feeding process of the lead trimming mechanism 52, the power transformer 1a trimmed by the lead trimming mechanism 52 moves to the lead trimming detection mechanism 53, and the power transformer 1a detected by the lead trimming detection mechanism 53 is also blanked at the same time. The three processes are carried out simultaneously, further shortening the total processing time of a single piece and improving production efficiency.

[0074] To achieve the synchronous displacement of the first clamping member 5101, the second clamping member 5102, and the third clamping member 5103, the lead trimming detection and clamping mechanism 51 further includes a linear motion module 5104. The linear motion module 5104 is connected to a connecting plate. The first clamping member 5101, the second clamping member 5102, and the third clamping member 5103 are arranged in sequence along the length direction of the connecting plate on the plate surface of the connecting plate. The linear motion module 5104 drives the first clamping member 5101, the second clamping member 5102, and the third clamping member 5103 to displace synchronously. Specifically, the linear motion module 5104 includes a feeding motor. The output shaft of the feeding motor is connected to a belt and drives the belt to move reciprocally. The above-mentioned transmission plate is arranged on the belt. The first clamping member 5101, the second clamping member 5102, and the third clamping member 5103 are arranged on the plate surface of the transmission plate. A slide rail is arranged on one side of the belt. A guiding block is slidably arranged on the slide rail. The transmission plate is connected to the guiding block. In this solution, the first clamping member 5101, the second clamping member 5102, and the third clamping member 5103 are all air claws. A lifting cylinder is arranged on the transmission plate. The lifting cylinder drives the air claws to move up and down along the height direction of the lead trimming detection machine table 59.

[0075] In order to keep the distance between the lead trimming table 5201 and the lead measuring table 5301 equal to the distance between the first clamping member 5101 and the second clamping member 5102, an adjusting bottom plate 5501 is provided on the upper end surface of the bottom box 55, and the lead trimming table 5201 and the lead measuring table 5301 are slidably arranged on the adjusting bottom plate 5501. This facilitates the debugging of the lead trimming table 5201 and the lead measuring table 5301. If there is a deviation between the distance between the lead trimming table 5201 and the lead measuring table 5301 and the distance between the first clamping member 5101 and the second clamping member 5102, the lead trimming table 5201 and the lead measuring table 5301 can be slid to make adjustments. As a specific implementation manner, sliders are provided at the bottom ends of both the lead trimming table 5201 and the lead measuring table 5301, and sliding grooves 5502 are arranged on the adjusting bottom plate 5501 along the length direction of the adjusting bottom plate 5501, and the sliders can slide in the sliding grooves 5502.

[0076] Moreover, positioning holes are provided on both the lead trimming table 5201 and the lead measuring table 5301, and fastening bolts are arranged in the positioning holes. When the lead trimming table 5201 and the lead measuring table 5301 slide to a distance equal to the length of the first clamping member 5101 from the second clamping member 5102, the fastening bolts penetrate through the positioning holes to keep the lead trimming table 5201, the lead measuring table 5301 and the adjusting bottom plate 5501 relatively fixed, thereby preventing the lead trimming table 5201 and the lead measuring table 5301 from moving again and causing position deviation after the debugging is completed.

[0077] At the same time, in order to prevent the air shear from touching the adjusting bottom plate 5501 during the lead trimming process, a lead trimming groove 5503 for accommodating the air shear part is provided on the side wall of the lead trimming table 5201.

[0078] In addition, in this embodiment, a first belt conveyor 56 for conveying qualified products is further included. The first belt conveyor 56 is located on one side of the lead trimming and detecting mechanism 53, and a second belt conveyor 57 for conveying unqualified products is arranged between the first belt conveyor 56 and the detecting mechanism. When the lead trimming and detecting mechanism 53 detects that the workpiece to be measured is unqualified, the third clamping member 5103 clamps the unqualified product and discharges it onto the second belt conveyor 57. After the unqualified product is discharged, the first clamping member 5101 clamps the workpiece to be measured and feeds it. When the lead trimming and detecting mechanism 53 detects that the workpiece to be measured is qualified, the third clamping member 5103 clamps the qualified product and discharges it onto the first belt conveyor 56. While discharging, the first clamping member 5101 clamps the next batch of workpieces to be measured to the feeding position. The unqualified products and qualified products are automatically classified and discharged directly after detection, avoiding subsequent manual classification and improving work efficiency. A storage box 58 is further arranged in the cavity of the bottom box 55. The storage box 58 is provided with an opening structure for storing the pins trimmed by the lead trimming mechanism. An outlet is arranged on one side wall of the bottom box, and the storage box 58 can be relatively separated from the bottom box 58 through the outlet.

[0079] The qualified power transformers 1a output by the first belt conveyor line 56 are sent to the comprehensive testing device 6 for comprehensive testing. The comprehensive testing device 6 uses an existing transformer comprehensive testing bench to detect the electrical performance of the power transformers 1a. The power transformers 1a that pass the detection by the comprehensive testing device 6 are sent to the common mode detection device 2 through the qualified product output mechanism, and the unqualified ones are sent to the defective product recycling mechanism.

[0080] As Figures 7 - 14 shown, the common mode detection device 2 is used to detect the common mode noise of the power transformers 1a. Of course, it is not limited to the common mode noise detection of the power transformers 1a, and can also be used for the common mode noise detection of other power transformers 1a and electronic components with a DIP package structure of a similar structure. In this solution, the common mode detection device includes a common mode detection loading mechanism 21, a common mode detection clamping mechanism 22, a common mode detection mechanism 23, a qualified product unloading mechanism 24, and a non-qualified product unloading mechanism 2524. The transportation and loading of the power transformers 1a are completed by the common mode detection loading mechanism 21, and then the power transformers 1a at the loading position of the common mode detection loading mechanism 21 are clamped by the common mode detection clamping mechanism 22 and sent to the common mode detection mechanism 23 for detection. After the power transformers 1a are detected, they are classified into qualified products and non-qualified products. The qualified products are clamped by the common mode detection clamping mechanism 22 and unloaded by the qualified product unloading mechanism 24, and the non-qualified products are clamped by the clamping structure and unloaded by the non-qualified product unloading mechanism 2524. In order not to exceed the stroke of the common mode detection clamping mechanism 22, the non-qualified product unloading mechanism 2524 is located between the common mode detection mechanism 23 and the qualified product unloading mechanism 24. And the non-qualified product unloading mechanism 2524 and the qualified product unloading structure are arranged perpendicular to each other, saving lateral space.

[0081] In this embodiment, the common-mode detection loading mechanism 21 includes a linear vibrating conveyor 2101 and a magnet 2102. A loading cylinder 2103 is provided on the side wall of the linear vibrating conveyor 2101. The loading cylinder 2103 can push the magnet 2102 to slide on the loading track of the linear vibrating conveyor 2101 and adsorb the power transformer 1a on the loading track. The end point of the stroke of the magnet 2102 is the loading position of the common-mode detection loading mechanism 21. The conveying speed of the linear vibrating conveyor 2101 is slow and cannot meet the detection speed of the common-mode detection mechanism 23. Moreover, the linear vibrating conveyor 2101 cannot perform directional conveying of the power transformer 1a to the specified position. However, the loading cylinder 2103 can push the magnet 2102 to slide on the loading track of the linear vibrating conveyor 2101. During the sliding process of the magnet 2102, the magnet 2102 can adsorb the power transformer 1a closest to the loading position and quickly bring the power transformer 1a to the loading position, cooperate with the common-mode detection clamping mechanism 22 to complete loading, and then perform the next sliding adsorption, cycling in turn, thereby accelerating the loading speed process and achieving precise positioning of the power transformer 1a and the loading position.

[0082] The common-mode detection clamping mechanism 22 includes a linear motion module 2203. The linear motion module 2203 is connected with a first clamping member 2201 and a second clamping member 2202. The linear motion module 2203 can drive the first clamping member 2201 to move between the common-mode detection loading mechanism 21 and the common-mode detection mechanism 23, and the linear motion module 2203 can drive the second clamping member 2202 to move between the common-mode detection mechanism 23 and the qualified product unloading mechanism 24. The automatic loading and unloading of the power transformer 1a are realized through the common-mode detection clamping mechanism 22, shortening the process time and improving the work efficiency.

[0083] In a further solution, a connecting plate is provided on the linear motion module 2203. The first clamping member 2201 and the second clamping member 2202 are arranged along the length direction of the connecting plate on the plate surface of the connecting plate. The linear motion module 2203 drives the first clamping member 2201 and the second clamping member 2202 on the connecting plate to displace synchronously. Moreover, the distance between the first clamping member 2201 and the second clamping member 2202, the distance between the feeding position of the common-mode detection feeding mechanism 21 and the detection position of the mold detection mechanism, and the distance between the detection position of the common-mode detection mechanism 23 and the discharging position of the qualified product discharging mechanism 24 are equal. During the feeding process of the power transformer 1a by the first clamping member 2201 and the second clamping member, the discharging of the power transformer 1a is carried out synchronously, further shortening the process time and improving the working efficiency. Specifically, the linear motion module 2203 includes a feeding motor. The output shaft of the feeding motor is connected with a belt and drives the belt to make a reciprocating motion. The above-mentioned connecting plate is arranged on the belt. The first clamping member 2201 and the second clamping member 2202 are arranged on the plate surface of the transmission plate. A slide rail is arranged on one side of the belt. A guiding block is slidably arranged on the slide rail. The connecting plate is connected with the guiding block. In this solution, both the first clamping member 2201 and the second clamping member are air claws 2306. A lifting cylinder is arranged on the connecting plate. The lifting cylinder drives the air claws 2306 to make a lifting motion along the height direction of the detection mechanism.

[0084] In this solution, as Figure 11 shown, the common-mode detection mechanism 23 includes a base 2301. A placement fixture 2302 and a pneumatic component 2305 are arranged on the base 2301. Moreover, a surrounding plate is arranged on the periphery of the base 2301 to form a shielding box 2313. The placement fixture 2302 and the pneumatic component 2305 are both placed inside the shielding box 2313. The shielding box 2313 reduces the interference to the detection. Among them, the placement fixture 2302 is used to carry the power transformer 1a. The placement fixture 2302 includes a placement table 2303. A placement groove for placing the power transformer 1a is arranged on the placement table 2303. A hollow part for passing through the pins is arranged at the bottom of the placement groove. And in order to keep the relative fixation between the power transformer 1a and the placement table 2303, an attracting member for keeping the relative fixation between the power transformer 1a and the placement groove is arranged in the placement groove. In this solution, the attracting member is a magnet 2102. At the same time, the pneumatic component 2305 includes an air claw 2306. Probe mounting plates 2307 are arranged on both claw heads of the air claw 2306. And the two claw heads are located on the opposite sides of the placement fixture 2302. The two claw heads drive the corresponding probe mounting plates 2307 to move away from or close to the placement fixture 2302, thereby driving the detection probes 2310 to detect the power transformer 1a on the placement fixture 2302.

[0085] Moreover, power transformers 1a of different models vary in size and the lengths of their pins are also different. In order to enable the common-mode detection mechanism 23 to be used for detecting power transformers 1a of different models, the placement fixture 2302 and the pneumatic component 2305 in this solution can slide relative to each other along the height direction of the placement fixture 2302.

[0086] As a specific implementation manner, the placement fixture 2302 further includes a fixture adjustment plate 2304. A first groove 2312 is provided along the height direction of the side wall of the placement table 2303. A first slider 2311 is provided on the fixture adjustment plate 2304, and the first slider 2311 is slidably arranged in the first groove 2312. Through the sliding cooperation of the first slider 2311 and the first groove 2312, the relative displacement between the placement table 2303 and the fixture adjustment plate 2304 is realized. Before the common-mode detection loading mechanism 21 and the unloading mechanism are installed, according to the model of the power transformer 1a, the distance between the placement table 2303 and the fixture adjustment plate 2304 is adjusted, and then the relative height between the placement table 2303 and the pneumatic component 2305 is adjusted until the pins of the power transformer 1a can touch the detection probe 2310 when the air claw 2306 drives the detection probe 2310 to displace. After the adjustment is completed, a fastening groove is provided along the length direction of the first groove 2312 on the fixture adjustment plate 2304, and a positioning hole is provided on the placement table 2303. The positioning hole slides in the fastening groove as the first slider 2311 and the first groove 2312 slide relative to each other, and a bolt is provided in the fastening groove. When the placement table 2303 and the fixture adjustment plate 2304 slide relative to each other to a specified position, the bolt penetrates through the fastening groove and is inserted into the positioning hole to achieve fixation.

[0087] However, in this solution, the first clamping member 2201 and the second clamping member 2202 are used to clamp synchronously to achieve loading and unloading. In order to ensure that the tabletop of the placement table 2303, the loading surface of the common-mode detection loading mechanism 21, and the unloading surface of the qualified product unloading mechanism 24 are in the same plane, it is difficult to adjust the height of the placement table 2303 after the common-mode detection loading mechanism 21 and the unloading mechanism are installed. Therefore, in this solution, the pneumatic component 2305 further includes a pneumatic claw 2306 adjusting plate. A fixing plate 2308 is provided on one side sidewall of the pneumatic claw 2306. The fixing plate 2308 is provided with a second groove along the height direction of the placement fixture 2302. A second slider is provided on the pneumatic claw 2306 adjusting plate, and the second slider is slidably arranged in the second groove. According to the model of the power transformer 1a, the height distance between the pneumatic claw 2306 and the pneumatic claw 2306 adjusting plate is adjusted, and then the relative height between the placement table 2303 and the pneumatic component 2305 is adjusted until the pins of the power transformer 1a can touch the detection probe 2310 when the detection probe 2310 is displaced by driving the pneumatic claw 2306. After the adjustment is completed, similar to the above-mentioned placement fixture 2302, the pneumatic claw 2306 adjusting plate is provided with a fastening groove along the length direction of the first groove 2312, and the fixing plate 2308 is provided with a positioning hole. The positioning hole slides in the fastening groove as the second slider slides relative to the second groove, and a bolt is provided in the fastening groove. When the pneumatic claw 2306 and the pneumatic claw 2306 adjusting plate slide relative to each other to a specified position, the bolt passes through the fastening groove and inserts into the positioning hole to achieve fixation.

[0088] After the common-mode detection mechanism 23 completes the detection of the power transformer 1a, the power transformer 1a is classified into qualified products and unqualified ones. The clamping member mechanism clamps the qualified products to the qualified product unloading mechanism 24 for unloading. The qualified product unloading mechanism 24 in this solution includes a linear vibrating conveyor 2101 and a pushing member 2401. A blanking cylinder 2402 is provided on the sidewall of the linear vibrating conveyor 2101. The blanking cylinder 2402 can push the pushing member 2401 to slide on the blanking track of the linear vibrating conveyor 2101, and the starting point of the stroke of the pushing member 2401 is the blanking position of the qualified product unloading mechanism 24. Specifically, the pushing member 2401 in this solution is a straight plate, and a convex plate extending along the blanking track direction of the linear vibrating conveyor 2101 is provided on the straight plate. When the cylinder pushes the convex plate to move, the convex plate drives the power transformer 1a located at the blanking position of the unloading mechanism to displace forward by a certain distance, avoiding the subsequent power transformer 1a from touching the front power transformer 1a during unloading.

[0089] Such as Figures 15 - 19As shown, the qualified product blanking mechanism 24 is connected to the loading conveyor mechanism 3100 provided on the foot-matching detection device 3000. The foot-matching detection device 3000 is used to perform foot-matching and testing on the pins of the power transformer 1a. Of course, it is not limited to the foot-matching detection of the power transformer 1a, and can also be used for the foot-matching detection of other power transformers 1a and electronic components with a DIP package structure similar to the structure. The foot-matching detection device 3000 includes a loading conveyor mechanism 3100, a first blanking conveyor mechanism 3500, a second blanking conveyor mechanism 3400, a power transformer 1a moving mechanism 3200, and a foot-matching detection device 3300. The loading conveyor mechanism 3100 completes the pre-loading transportation of the power transformer 1a, and then the power transformer 1a moving mechanism 3200 can move it to the position of the foot-matching detection device 3300. After the foot-matching detection is completed, the qualified products are moved to the first blanking conveyor mechanism 3500 through the power transformer 1a moving mechanism 3200 to complete blanking; the unqualified products are moved to the second blanking conveyor mechanism 3400 through the power transformer 1a moving mechanism 3200 for recycling.

[0090] The loading conveyor mechanism 3100 adopts a linear vibrating conveyor, which can linearly convey the power transformer 1a. An optoelectronic sensor and a positioning device are provided at the end of the loading conveyor mechanism 3100, which can accurately position the power transformer 1a.

[0091] The moving mechanism 3200 of the power transformer 1a includes a linear moving pair 3210, and the linear moving pair 3210 is connected to the first electric The first power transformer 1a clamping assembly 3230 and the second power transformer 1a clamping assembly 3240. The linear moving pair 3210 can drive the first power transformer 1a clamping assembly 3230 to move between the loading conveyor mechanism 3100 and the foot-matching detection device 3300, and the linear moving pair 3210 can drive the second power transformer 1a clamping assembly 3240 to move between the foot-matching detection device 3300 and the first blanking conveyor mechanism 3500.

[0092] Both the first power transformer 1a clamping assembly 3230 and the second power transformer 1a clamping assembly 3240 can move independently on the linear moving pair 3210, and each power transformer 1a clamping assembly is provided with a lifting mechanism to achieve independent lifting. At the same time, the power transformer 1a clamping assembly is also provided with a finger cylinder, which can clamp and fix a single power transformer 1a. When the power transformer 1a is moved to the end position by the loading conveyor mechanism 3100, the first power transformer 1a clamping assembly 3230 can be moved above this position, then lowered to clamp the power transformer 1a, then raised, and then moved to the position of the foot-matching detection device 3300.

[0093] The fitting detection device 3300 includes a fitting detection probe 3320, a guiding template 3310, a push-pull rod 3340, and a push-pull rod moving mechanism 3350. The guiding template 3310 is provided with a receiving cavity 3311 for placing the power transformer 1a. The bottom of the receiving cavity 3311 is provided with pin perforations through which the pins of the power transformer 1a can pass and be docked with the fitting detection probe 3320. The bottom of the receiving cavity 3311 is further provided with a first pull rod perforation, and a push rod is placed in the first pull rod perforation; the first end of the push-pull rod 3340 is connected to the push-pull rod moving mechanism 3350, and the second end of the push-pull rod 3340 is provided with a magnetic attachment 3410 for adsorbing the power transformer 1a placed in the receiving cavity 3311.

[0094] The power transformer 1a is moved above the guiding template 3310 by the first power transformer 1a clamping assembly 3230 and then placed into the receiving cavity 3311. The pins of the power transformer 1a pass through the pin perforations. At the same time, the push-pull moving mechanism drives the push-pull rod 3340 to move downward, and the power transformer 1a is tightly adsorbed by the magnetic attachment 3410 at the end of the push-pull rod 3340, so as to be tightly pulled down and docked with the fitting detection probe 3320 located below the guiding template 3310, thus ensuring good contact between the pins and the fitting detection probe 3320. The fitting detection probe 3320 is connected to a testing instrument, and its electrical performance can be tested through the testing instrument. During the detection, the pin correction operation is also completed.

[0095] Since the receiving cavity 3311 has a certain depth, after the test is completed, if the power transformer 1a is directly clamped, although it can be clamped, the clamping position is relatively high and the clamping is not very stable. In this embodiment, after the fitting detection is completed, the push-pull rod moving mechanism 3350 can drive the push-pull rod 3340 to lift the power transformer 1a, so as to push the power transformer 1a out of the receiving cavity 3311. In this way, the power transformer 1a can be clamped by the second power transformer 1a clamping assembly 3240, then lifted and horizontally moved. If it is a defective product, when it moves to the second blanking conveying mechanism 3400, the power transformer 1a is put down, and it is conveyed and recycled through the second blanking conveying mechanism 3400; if it is a qualified product, it will continue to move. When it moves to the first blanking conveying mechanism 3500, the power transformer 1a is put down, and through the second blanking conveying mechanism 3400, it moves to the next process, thus completing the fitting detection operation.

[0096] Further, the fitting detection device 3300 of the power transformer 1a further includes a probe board 3330 for fixing the A fitting probe, and is set at a position between the guiding template 3310 and the push rod moving mechanism 3350; the probe board 3330 is provided with a second pull rod perforation. The probe board 3330 can fix the fitting detection probe 3320, and setting the second pull rod perforation in the middle of the probe board 3330 can further guide the push rod 3340.

[0097] The fitting detection device 3300 of the power transformer 1a further includes a support 3360, which fixedly connects the wire template and the probe board 3330 to support the guiding template 3310 and the probe board 3330. The pull rod moving mechanism uses a pneumatic slide table, and the pneumatic slide table is also fixedly connected to the support 3360. The telescopic rod part of the pneumatic slide table is connected to the second end of the push rod 3340 to realize the movement of the push rod 3340. The pneumatic slide table itself integrates a cylinder and a guiding track, and has good guiding performance.

[0098] Both the first blanking conveying mechanism 3500 and the second blanking conveying mechanism 3400 can adopt a belt conveyor or a linear vibrating conveyor. The first blanking conveying mechanism 3500, the fitting detection device 3300 and the feeding conveying mechanism 3100 are arranged in a straight line, which is beneficial to the spatial layout of the production line. The second blanking conveying mechanism 3400 is arranged in a direction perpendicular to the above-mentioned straight line, so as to facilitate the recycling of defective products and save space.

[0099] Finally, the qualified power transformer 1a conveyed by the first blanking conveying mechanism 3500 is packaged.

[0100] In the power transformer production test monitoring system of the present invention, the power transformer 1a is spray-coded and spray-code detected in the spray-coding detection device 1, then enters the high-voltage detection device 4 for withstand voltage testing, then enters the lead trimming detection device 5 for lead trimming and lead trimming testing, then enters the comprehensive testing device 6 for electrical comprehensive testing, then enters the common mode detection device 2 for noise common mode detection, and then enters the fitting detection device 3000 for fitting and testing.

[0101] In the above six detection links, there are recovery mechanisms for detecting unqualified products. To effectively monitor the detection information of a single power transformer 1a, a spray-code identification device 7 is provided at the end of the detection equipment corresponding to each detection link. In this embodiment, the spray-code identification device 7 uses an industrial network camera produced by Medvision, and the spray-code identification device 7 is fixed by a spray-code identification device installation base 701.

[0102] The power transformer production test monitoring system of the present invention includes the above-mentioned detection production line for performing various quality inspections and tests on the produced power transformers. The spray-coding mechanism 130 in the spray-coding detection device 1 at the initial end of the detection production line spray-codes and marks each power transformer 1a entering the detection production line, as shown in Figure 1, a coding and identification device 7 is provided on the qualified product output mechanism of each subsequent detection link to read the coding 1a on the power transformer entering the next link. The coding and identification device 7 is a CCD camera. Coding and identification devices 7 are provided on the qualified product output mechanisms of the finished product output mechanism 170, the qualified product blanking mechanism 24, the first blanking conveyor mechanism 3500, the first belt conveyor line 48, the first belt conveyor line 56, and the comprehensive testing device 6. Each group of coding and identification devices 7 is connected to the monitoring system. The storage unit in the monitoring system can record the factory inspection information of each qualified power transformer 1a. For unqualified power transformers 1a, the monitoring system can accurately read in which specific detection process the defective product is detected, facilitating the manufacturer to directly obtain the detection results, with high detection efficiency, providing data support for the improvement of subsequent equipment processes and industrial big data.

Claims

1. A power transformer production test monitoring system, characterized in that, It includes a quality inspection line. At the inlet end of the quality inspection line, there is a coding mechanism for coding the power transformers flowing into the quality inspection line. From the inlet end to the outlet end of the quality inspection line, there are several detection devices in sequence. In each group of detection devices, there is a coding recognition device to record the coding information on the power transformers flowing into / out of the detection device; The quality inspection line includes: A coding detection device for detecting whether the coding of the power transformer is normal; A common mode detection device for detecting the common mode noise of the power transformer; A fitting detection device for fitting and testing the pins of the power transformer; A high voltage detection device for performing a high voltage withstand test on the power transformer; A pin cutting detection device for cutting and testing the pins of the power transformer; An integrated test device for detecting the electrical performance of the power transformer; The fitting detection device includes a fitting detection mechanism, and the fitting detection mechanism includes: Fitting detection probes; A guiding template. The guiding template is provided with a receiving cavity for placing the power transformer. At the bottom of the receiving cavity, there are pin through holes. The pins of the power transformer can pass through the pin through holes to be docked with the fitting detection probes; The fitting detection mechanism further includes: A push-pull rod. At the bottom of the receiving cavity, there is also a first pull rod through hole, and the push-pull rod is placed in the first pull rod through hole; and A push-pull rod moving mechanism. The first end of the push-pull rod is connected to the push-pull rod moving mechanism, and the second end of the push-pull rod is provided with a magnetic adsorbing part for adsorbing the power transformer placed in the receiving cavity; The pin cutting detection device includes: A pin cutting detection machine table. On the pin cutting detection machine table, there are a pin cutting detection clamping mechanism, a pin cutting mechanism, and a pin cutting detection mechanism; The pin cutting detection clamping mechanism is used to clamp the power transformer to pass through the pin cutting mechanism and the pin cutting detection mechanism in sequence and then discharge the material. The pin cutting mechanism includes a pin cutting table and a cutting component. The pin cutting table is provided with a first placement groove. At the bottom of the first placement groove, there is a pin cutting hollow channel for passing through the pins to be cut, and the air cutting part of the cutting component is correspondingly arranged below the pin cutting hollow channel. The lower end surface of the pin cutting hollow channel is the cutting surface; On the pin cutting detection machine table, there is also a bottom box; the pin cutting table is arranged on the upper cover surface of the bottom box; each pin cutting table is provided with a first placement groove. At the bottom of the first placement groove, there are several first hollow channels for passing through the pins. The first hollow channels are divided into pin cutting hollow channels and non-pin cutting hollow channels. The length of the non-pin cutting hollow channels is less than the length of the pin cutting hollow channels; the cutting component includes an air shear. The cutting component is installed in the bottom box; there is a cavity inside the bottom box, the air shear is located in the cavity, and the air cutting part of the cutting component is correspondingly arranged below the pin cutting hollow channel. The lower end surface of the pin cutting hollow channel is the cutting surface.

2. The production test monitoring system of a power transformer according to claim 1, characterized in that: The coding recognition device is a CCD camera.

3. The production test monitoring system of a power transformer according to claim 1, characterized in that: The coding detection device includes: A coding circulating conveying mechanism for conveying the power transformers to be detected; A visual detection system for detecting the coding of the power transformer. The visual detection system is arranged above the coding circulating conveying mechanism; A sorting and handling mechanism for inspected and inkjet-printed components. The inkjet handling mechanism is connected to a PLC controller, which is in turn connected to a vision inspection system. The inkjet handling mechanism includes a second handling robot and a synchronous belt module. The synchronous belt module includes a linear guide rail and a second conveyor line parallel to the linear guide rail. The second handling robot is connected to the second conveyor line and is slidably engaged with the linear guide rail, such that the second handling robot can slide along the linear guide rail under the drive of the second conveyor line. A defective product recovery mechanism. Both the defective product recovery mechanism and the circulating conveyor mechanism are located within the sliding stroke range of the second handling robot along the linear guide rail, so that the second handling robot can sort the power transformers with abnormal inkjet printing on the circulating conveyor mechanism onto the defective product recovery mechanism.

4. A power transformer production test monitoring system according to claim 1, characterized in that: The common mode detection device includes: a base, on which a placement fixture and a pneumatic component are provided. The placement fixture is used to carry the power transformer. The pneumatic component is provided with detection probes, which are located on both sides of the placement fixture. The pneumatic component can drive the detection probes to detect the power transformer on the placement fixture. And the placement fixture and the pneumatic component can slide relative to each other along the height direction of the placement fixture.

5. The production test monitoring system of a power transformer according to claim 1, characterized in that: The high voltage detection device includes: A high voltage detection machine table, on which a circular track, a high voltage detection conveyor mechanism, a high voltage detection mechanism, and a high voltage detection clamping mechanism are provided. A number of clamping fixtures that slide along the circular track are provided on the circular track. The circular track is respectively provided with a loading station and an unloading station. The high voltage detection conveyor mechanism is used to drive the number of clamping fixtures to slide along the circular track. The high voltage detection mechanism is used to detect the power transformers on the clamping fixtures between the loading station and the unloading station. The high voltage detection clamping mechanism is used to clamp the power transformer to be tested to the loading station, or to clamp the power transformer at the unloading station for unloading.

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