Integrated detection equipment for mutual inductor

Abstract

The invention discloses mutual inductor integrated detection equipment, which comprises a rack and a video detection unit, and is characterized in that the video detection unit comprises an imaging lens and an imaging system; the electrical performance detection unit comprises a detection structure which can be in butt joint with the pins of the mutual inductor, a lifting structure which can be lifted to enable the mutual inductor to be in butt joint with the detection structure, and an electrical performance display system; the material carrying table is rotationally arranged between the mutual inductor conveying unit and the electrical performance detection unit, and the mutual inductor material transferring unit comprises a material clamping mechanical arm and a material transferring movement drive which drives the material clamping mechanical arm to move between the mutual inductor conveying unit and the material carrying table for material transferring. According to the invention, the full-performance detection integration of the mutual inductor is realized, the video detection, the electrical performance detection and the screening of qualified products and unqualified products after detection are carried out on one conveying line, the detection efficiency of product detection on an automatic production line is effectively improved, the detection period is shortened, the detection equipment is optimized, and the equipment cost and the equipment space are saved for enterprises.

Description

Technical Field

[0001] This invention relates to an integrated testing device for instrument transformers, belonging to the field of instrument transformer production and testing technology. Background Technology

[0002] After current instrument transformers are manufactured, they undergo performance testing, which includes inspecting everything from the appearance of the pin windings to the conductivity of each pin. Currently, the industry mostly uses a combined testing approach for instrument transformers, employing different equipment to test different performance characteristics separately, recording and screening the results individually. Multiple performance characteristics require multiple testing devices, making it impossible to achieve automated, full-performance testing on a single machine. Each testing device also requires a corresponding set of equipment for loading and unloading, electrical control systems, etc., resulting in wasted production and testing costs and production space.

[0003] Therefore, there is a need to develop a testing device that can automatically detect the required performance of current transformers in a single device. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an integrated testing device for current transformers that can automatically detect multiple indicators of current transformers.

[0005] This invention is achieved through the following technical solution:

[0006] An integrated testing device for current transformers, characterized in that it includes:

[0007] The rack is used to set up the various unit structures;

[0008] The image detection unit includes an imaging lens and a display system;

[0009] The electrical performance testing unit includes a testing structure that can connect to the pins of a current transformer, a lifting structure that can be raised and lowered to connect the current transformer to the testing structure, and an electrical performance display system.

[0010] The current transformer conveying unit includes a loading track and a unloading track, and the image detection unit and the electrical performance detection unit are located on one side of the loading track;

[0011] A loading platform is rotatably positioned between the current transformer conveying unit and the electrical performance testing unit. The loading platform includes at least two material-accommodating stations for accommodating fixtures for current transformers.

[0012] The current transformer transfer unit includes a clamping robot and a transfer drive that moves the robot between the current transformer transfer sheet and the loading table to transfer materials.

[0013] The integrated testing device for current transformers described above is characterized by having two imaging lenses, which respectively perform visual inspection from the end and side of the current transformer pins, and an imaging light source is provided between each imaging lens and the current transformer being tested.

[0014] The integrated testing device for current transformers as described above is characterized in that the testing structure includes several test contact ends disposed on the testing base, each test contact end is provided with a needle cap that accommodates and conducts current transformer pins, the output end of the lifting structure is provided with a metal strip that can be lifted and lowered through the hole in the current transformer, the testing base is provided with a metal rod that can be extended and retracted to connect and conduct with the metal strip, and the testing structure is connected to a testing power supply.

[0015] The integrated testing equipment for current transformers as described above is characterized in that the lifting structure includes a lifting seat slidably disposed on the testing seat, the lifting seat is provided with a material receiving part that can receive and move the current transformer fixture from below the material receiving station of the material carrying platform, and the lifting seat is provided with a telescopic drive for driving the metal strip to rise and fall.

[0016] The integrated testing equipment for current transformers described above is characterized in that the fixture is provided with a positioning hole, and the material receiving part is provided with a positioning element that matches the positioning hole.

[0017] The integrated testing equipment for current transformers described above is characterized in that the feeding track is a belt conveyor track arranged opposite to each other, the feeding track is provided with a rotating seat that can be raised and lowered and rotated at the visual inspection station, and the inspection station corresponding to the feeding track is provided with lifting and lowering stop components at both the front and rear.

[0018] The integrated testing equipment for current transformers described above is characterized in that the unloading track is a belt conveyor track arranged opposite to each other, and the receiving station of the unloading track is provided with lifting and lowering stop components in the forward and backward movement direction.

[0019] The integrated testing equipment for current transformers as described above is characterized in that the frame is provided with a material loading platform drive for driving the material loading platform to rotate, and the material loading platform has at least two ends that connect to the electrical performance testing unit and the current transformer transmission unit, with each end provided with a material receiving station.

[0020] The integrated testing equipment for current transformers described above is characterized in that the material storage station is a hollow limiting frame that limits the displacement of the current transformer.

[0021] The integrated testing equipment for current transformers as described above is characterized in that the fixture has clamping grooves at both ends, and the clamping robot has clamping arms that can open and close to cooperate with the clamping grooves to clamp or lower the fixture.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] This invention integrates full-performance testing of instrument transformers, with a single conveyor line performing visual inspection, electrical performance testing, and screening of qualified and unqualified products. This effectively improves the testing efficiency of products on automated production lines, shortens the testing cycle, optimizes testing equipment, and saves enterprises equipment costs and space. Attached Figure Description

[0024] Figure 1 This is a top view of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the image detection unit and the mutual inductor transmission unit of the present invention;

[0026] Figure 3 This is a schematic diagram of the rotating seat structure of the image inspection station of the present invention;

[0027] Figure 4 This is a partial structural schematic diagram of the present invention;

[0028] Figure 5 This is a schematic diagram of the electrical performance testing unit and the material loading platform of the present invention;

[0029] Figure 6 This is a schematic diagram showing the state of the material receiving part of the electrical performance testing unit of the present invention moving towards the foot electrode after receiving the fixture and the current transformer.

[0030] Figure 7 This is a schematic diagram of the current transformer of the present invention in the conducting state of the electrical performance detection unit. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to specific embodiments.

[0032] like Figure 1-7 As shown, an integrated testing device for current transformers includes:

[0033] Rack 1 is used to set up the structure of each unit;

[0034] The visual inspection unit 2 includes an imaging lens 21 and a display system 22. The imaging lens 21 performs visual inspection on the current transformer 100 at the visual inspection station, and the display system 22 magnifies and displays the image.

[0035] The electrical performance testing unit 3 includes a testing structure 31 that can connect to the pins of the current transformer 100, a lifting structure 32 that can be raised and lowered to connect the current transformer 100 to the testing structure 31, and an electrical performance display system 33. The lifting structure 32 receives the current transformer 100 on the fixture 7 and then sends it to connect to the testing structure 31, so that the pins of the current transformer 100 can conduct power to form a circuit, thereby detecting the current transformer sensitivity, current difference and voltage difference and other electrical performance. The test results are displayed on the electrical performance display system 33.

[0036] The current transformer conveying unit 4 includes a loading track 41 and a unloading track 42, with a visual detection unit 2 and an electrical performance detection unit 3 located on one side of the loading track 41.

[0037] The material loading platform 5 is rotatably positioned between the current transformer conveying unit 4 and the electrical performance testing unit 3. The material loading platform 5 includes at least two material holding stations 51 of the fixtures 7 for accommodating current transformers. The rotation of the material loading platform 5 causes the stations to be exchanged, thereby improving testing efficiency and shortening the testing cycle.

[0038] The current transformer transfer unit 6 includes a clamping robot 61 and a transfer drive 62 that drives the robot to move between the current transformer transfer sheet 4 and the loading table 5 to transfer the current transformer. The current transformer transfer unit 6 clamps the current transformer fixture to be inspected on the loading track 41 and sends it to the loading table 5 or sends the inspected current transformer and fixture to the unloading track 42, shortening the transfer stroke and improving the continuity of automatic inspection.

[0039] The control system 8 is electrically connected to each unit to operate, receives and identifies the detected structure and controls the corresponding actions.

[0040] This invention uses a loading track 41 and a unloading track 42 to achieve continuous multi-station testing, optimizes the working stroke of each unit, improves the automation level and testing efficiency of current transformer quality testing, and achieves cost optimization.

[0041] In a preferred embodiment of the present invention, there are two imaging lenses 21, which perform visual inspection from the end and side of the current transformer pin, respectively. An imaging light source 23 is provided between each imaging lens 21 and the current transformer being inspected. By capturing images of the windings on the current transformer pin from two directions, the operation of movement and repositioning is reduced, and the image clarity and visual inspection speed are improved.

[0042] To better facilitate visual inspection, a rotating base 24 capable of lifting and rotating is provided at the visual inspection station of the current transformer transmission unit 4. The rotating base 24 is located at the output end of its rotation drive 25, which in turn is located at the output end of the rotating base lifting drive 26. This allows the fixture and current transformer at this station to be raised within the detection range of the imaging lens 21, enabling better bidirectional coordination and increasing inspection speed. More preferably, the rotating base 24 is provided with a limiting member 241, and the fixture 7 has matching limiting ports 73 at both ends to limit the displacement of the fixture 7 in both horizontal and vertical directions.

[0043] In a preferred embodiment of the present invention, the detection structure 31 includes a plurality of test contact ends 311 disposed on the detection base 34. Each test contact end 311 is provided with a needle cap 312 that accommodates and conducts the current transformer pins. The output end of the lifting structure 32 is provided with a metal strip 313 that can be raised and lowered to pass through the central hole of the current transformer 100. The detection base 34 is provided with a metal rod 314 that can extend and retract to engage and conduct with the metal strip 313. The metal strip 313 and the metal rod 314 are two corresponding contacts. The detection structure 31 is connected to a detection power supply. The current transformer 100 and the test contact ends 311, and the current transformer 100 and the contacting metal strip 313 and metal rod 314 can respectively form a circuit. When the power supply is turned on, the electrical performance of the current transformer 100 can be tested.

[0044] More preferably, the lifting structure 32 includes a lifting seat 321 slidably disposed on the testing seat 34. The lifting seat 321 is provided with a receiving part 3211 capable of receiving and moving the current transformer fixture from below the receiving station 51 of the material carrier 5. Preferably, the receiving part 3211 is provided with a positioning element 3212 that matches the positioning hole of the fixture 7. The lifting seat 321 is provided with a telescopic drive 322 for driving the metal strip 313 to rise and fall. When connecting the test circuit, the lifting seat 321 is driven to move from below the receiving station 51 of the material carrier 5 to receive the fixture 7 at that station and continue to move upward to disengage from the material carrier 5 until the pin of the current transformer 100 on the fixture 7 contacts the pin cap 312 of the test contact end 311. Then, the telescopic drive 322 works to make the metal strip 313 rise through the middle of the current transformer 100 to a position where it can dock with the metal rod 314.

[0045] Furthermore, the frame 1 is equipped with a loading platform drive 52 that drives the loading platform 5 to rotate. The loading platform 5 has at least two ends 53 that connect to the electrical performance testing unit 3 and the current transformer conveying unit 4. Each end 53 is provided with a material receiving station 51. The material receiving station 51 is preferably a hollow limiting frame that limits the displacement of the current transformer, so as to facilitate the jig 7 to be received and lifted. Under the condition of matching the testing speed, more material receiving stations 51 can be set to increase the turnover speed.

[0046] To facilitate faster and more efficient docking of the current transformer 100 with the detection structure 31, the fixture 7 is provided with a positioning hole 71, and the material receiving part 3211 is provided with a positioning element 3212 that matches the positioning hole 71. After receiving the fixture 7, stable and rapid weighing can be performed for detection.

[0047] In a preferred embodiment of the present invention, the loading track 41 is a belt conveyor track arranged opposite to each other. The current transformer 100 is conveyed by belts on both sides via a fixture 7. The rotating seat 24 is located at the visual inspection station corresponding to the loading track 41. The inspection station corresponding to the loading track 41 is equipped with lifting and lowering stoppers 43 at both ends. These stoppers 43 are connected to a drive mechanism. When the current transformer under test enters the inspection station, the stoppers 43 rise to block the subsequent conveying of workpieces, enabling sequential inspection and preventing missed inspections. The unloading track 42 is also a belt conveyor track arranged opposite to each other. The receiving station of the unloading track 42 is also equipped with lifting and lowering stoppers 43 at both ends in the direction of movement, facilitating better workpiece diversion after inspection.

[0048] In this invention, preferably, the fixture 7 has clamping grooves 72 at both ends, and the clamping robot 61 has clamping arms 611 that can open and close to cooperate with the clamping grooves 72 to clamp or place the fixture. Preferably, the material transfer drive 62 is a combination of horizontal and vertical movement drives, which can drive the clamping robot 61 to move and extend between the loading platform end 53 near the loading track 41, the loading track 41 and the unloading track 42 to clamp or place the fixture 7.

[0049] The workflow of this invention is as follows: The control system 8 is activated, and the current transformer 100 that has completed winding production is conveyed on the loading track 41 of the current transformer conveying unit 4. When it is conveyed to the visual inspection station, the material stop 43 works to position the current transformer 100 at the visual inspection station and block the advancement of subsequent current transformers 100. The rotating seat 24 lifts the current transformer 100 for visual inspection. After rotating and changing direction for inspection, the all-round visual inspection is completed. The current transformer 100 is conveyed to the material transfer station. The qualified current transformer is picked up by the clamping robot 61 and placed in the material receiving station 51 of the rotating loading table 5. The loading table 5 rotates and sends the current transformer 100 to be inspected to the electrical performance inspection unit 3. The lifting structure 32 receives the current transformer in the material receiving station 51 and lifts it to dock with the inspection structure 31 for electrical inspection. The inspection data is displayed on the electrical performance display system 33. After collecting the inspection results, the control system 8 controls the clamping robot 61 to send the inspected current transformer 100 to the unloading track 42 for classified conveying in different directions.

Claims

1. An integrated testing device for instrument transformers, characterized in that... include: The frame (1) is used to set up the structure of each unit; The image detection unit (2) includes an imaging lens (21) and an imaging system (22); The electrical performance testing unit (3) includes a testing structure (31) capable of docking with the pins of the current transformer (100), a lifting structure (32) capable of raising and lowering to dock the current transformer with the testing structure (31), and an electrical performance display system (33). The current transformer transmission unit (4) includes a loading track (41) and a unloading track (42), and the image detection unit (2) and the electrical performance detection unit (3) are located on one side of the loading track (41). The material loading platform (5) is rotatably positioned between the current transformer conveying unit (4) and the electrical performance testing unit (3). The material loading platform (5) includes at least two material holding stations (51) for accommodating the current transformers in the fixtures (7). The current transformer transfer unit (6) includes a clamping robot (61) and a transfer drive (62) that drives it to move between the current transformer transfer sheet (4) and the loading table (5) to transfer materials.

2. The integrated testing equipment for instrument transformers according to claim 1, characterized in that: There are two imaging lenses (21), which perform visual detection from the end and side of the current transformer pin, respectively. An imaging light source (23) is provided between each imaging lens (21) and the current transformer being tested.

3. The integrated testing equipment for instrument transformers according to claim 1, characterized in that: The detection structure (31) includes several test contact ends (311) provided on the detection base (34). Each test contact end (311) is provided with a needle cap (312) that accommodates and conducts the current transformer pin. The output end of the lifting structure (32) is provided with a metal strip (313) that can be lifted and lowered to pass through the hole in the current transformer. The detection base (34) is provided with a metal rod (314) that can be extended and retracted to connect and conduct with the metal strip (313). The detection structure (31) is connected to a detection power supply.

4. The integrated testing equipment for instrument transformers according to claim 1 or 3, characterized in that: The lifting structure (32) includes a lifting seat (321) slidably disposed on the detection seat (34). The lifting seat (321) is provided with a material receiving part (3211) that can receive and move the current transformer fixture from below the material receiving station (51) of the material carrying platform (5). The lifting seat (321) is provided with a telescopic drive (322) that drives the metal strip (313) to rise and fall.

5. The integrated testing equipment for instrument transformers according to claim 4, characterized in that: The fixture (7) is provided with a positioning hole (71), and the material receiving part (3211) is provided with a positioning element (3212) that matches the positioning hole (71).

6. The integrated testing equipment for instrument transformers according to claim 1, characterized in that: The feeding track (41) is a belt conveyor track arranged opposite to each other. The feeding track (41) is equipped with a rotating seat (24) that can be raised and lowered and rotated at the corresponding visual inspection station. The inspection station corresponding to the feeding track (41) is equipped with a material stop (43) that can be raised and lowered at both the front and rear.

7. The integrated testing equipment for instrument transformers according to claim 1, characterized in that: The unloading track (42) is a belt conveyor track arranged opposite to each other, and the receiving station of the unloading track (42) is provided with lifting and lowering stop members (43) in the forward and backward movement direction.

8. The integrated testing equipment for instrument transformers according to claim 1, characterized in that: The frame (1) is provided with a loading platform drive (52) for driving the loading platform (5) to rotate. The loading platform (5) has at least two ends (53) that connect to the electrical performance testing unit (3) and the current transformer transmission unit (4). Each end (53) is provided with a material receiving station (51).

9. The integrated testing equipment for instrument transformers according to claim 1 or 8, characterized in that: The material storage station (51) is a hollow limiting frame that limits the displacement of the current transformer.

10. The integrated testing equipment for instrument transformers according to claim 1, characterized in that: The fixture (7) has clamping grooves (72) at both ends, and the clamping robot (61) is equipped with clamping arms (611) that can open and close to cooperate with the clamping grooves (72) to clamp or lower the fixture.

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