Magnetic Core Testing Machine

Abstract

The present invention relates to the technical field of testing devices, and discloses a magnetic core testing machine, which includes a feeding mechanism, a testing mechanism, a transfer mechanism and a discharging mechanism. The feeding mechanism includes a first material plate, a second material plate, a transfer rack and a feeding moving device. The transfer rack is provided with a first material slot and a second material slot. The feeding moving device is connected with a feeding suction nozzle, and the feeding moving device can drive the feeding suction nozzle to move. The testing mechanism includes a testing fixture, an upper testing head and a lower testing head. The upper testing head can move downward close to or upward away from the testing fixture, and the lower testing head can move upward close to or downward away from the lower testing head. The transfer mechanism includes a first clamping jaw and a second clamping jaw. The discharging mechanism includes a discharging rack, a third clamping jaw and a fourth clamping jaw. The discharging rack is provided with a first fixture and a second fixture. The present invention can automatically feed the magnetic core into the testing fixture for power-on testing, greatly improving the efficiency and safety of inductance testing of the magnetic core.

Description

Technical Field

[0001] The present invention relates to the technical field of measuring devices, and in particular to a magnetic core testing machine. Background Art

[0002] The production of inductors includes multiple processes. Among them, before assembling the magnetic core, it is necessary to first test the inductance value of the magnetic core. After the magnetic core is produced in the previous process, it is usually arranged on the material plate. The current testing method usually requires manual workers to take the magnetic core from the material plate and place it on both the upper and lower sides of the testing fixture, and then move the testing head to the position of the magnetic core to conduct a power-on test on the magnetic core. This method has low operation efficiency, and there is a risk of electric leakage when manually moving the testing head to the magnetic core for power-on. Therefore, there is an urgent need for a device that can improve the testing efficiency and safety of magnetic cores. Summary of the Invention

[0003] The purpose of the present invention is to provide a magnetic core testing machine to solve one or more technical problems existing in the prior art, and at least provide a beneficial choice or create conditions.

[0004] The solution of the present invention to solve its technical problems is as follows:

[0005] A magnetic core testing machine, comprising: a feeding mechanism, including a first material plate, a second material plate, a transfer rack and a feeding moving device. The transfer rack is provided with a first material groove and a second material groove. The feeding moving device is connected with a feeding suction nozzle, and the feeding moving device can drive the feeding suction nozzle to move between the first material plate, the second material plate, the first material groove and the second material groove; a testing mechanism, including a testing fixture, an upper testing head located above the testing fixture, and a lower testing head located below the testing fixture. The upper testing head can move downward close to or upward away from the testing fixture, and the lower testing head can move upward close to or downward away from the lower testing head; a transfer mechanism, including a first clamping jaw and a second clamping jaw. The first clamping jaw can move between the first material groove and the top side of the testing fixture, and the second clamping jaw can move between the second material groove and the bottom side of the testing fixture; a discharging mechanism, including a discharging rack, a third clamping jaw and a fourth clamping jaw. The discharging rack is provided with a first fixture and a second fixture. The third clamping jaw can move between the top side of the testing fixture and the first fixture, and the fourth clamping jaw can move between the bottom side of the testing fixture and the second fixture.

[0006] The technical solution has at least the following beneficial effects: A plurality of cores to be detected are respectively placed on the first material plate and the second material plate of the feeding mechanism. When the inductance value of the core needs to be tested, the feeding moving device drives the feeding suction nozzle to move to the position of the first material plate, and the feeding suction nozzle adsorbs the core located on the first material plate, and then moves to the first material groove of the transfer rack. The feeding suction nozzle releases the adsorption force on the core and puts the core into the first material groove. In this way, the feeding moving device drives the feeding suction nozzle to move between the second material plate and the second material groove, and puts the core from the second material plate into the second material groove. Then, the first jaw and the second jaw of the transfer mechanism respectively move to the positions of the first material groove and the second material groove, and clamp out the cores from the first material groove and the second material groove respectively. The first jaw puts the core on the top side of the test fixture, and the second jaw places the core on the top side of the test fixture. The lower test head moves upward close to the test fixture and holds the core located below to keep it inside the test fixture. At this time, the first jaw and the second jaw can return to their original positions to prepare for feeding the core again. The upper test head moves downward close to the test fixture and presses down the core located above, so that the upper and lower cores are in close contact, and the upper and lower cores are energized and tested. After the test is completed, the third jaw and the fourth jaw respectively move to the upper and lower sides of the test fixture, take out the upper and lower cores from the test fixture, and move them into the first fixture and the second fixture to prepare for the next process. In this way, the core can be automatically fed into the test fixture for power-on testing, and after completion, it can be automatically unloaded, greatly improving the efficiency and safety of the inductance test of the core, thereby improving the production efficiency.

[0007] As a further improvement of the above technical solution, the present invention further includes a cleaning mechanism, which is located between the transfer rack and the testing mechanism. The cleaning mechanism includes a base frame, an unwinding roller, a winding roller, a winding motor and a support plate. The support plate is arranged on the base frame. The unwinding roller and the winding roller are respectively rotatably connected to the base frame. The unwinding roller and the winding roller are respectively located on both sides of the support plate. The unwinding roller can unwind and pass through the top side of the support plate and be connected to the winding roller. The winding motor is connected to the base frame, and the winding motor is drivingly connected to the winding roller. When the first jaw and the second jaw move towards the test fixture, they pass through the top side of the support plate. A cleaning mechanism for wiping and cleaning the magnetic core is also arranged between the transfer rack and the testing mechanism. Specifically, a paper tape for wiping and cleaning is loaded on the unwinding roller. The paper tape is unwound from the unwinding roller, passes through the top side of the support plate and is then connected to the winding roller. When the first jaw and the second jaw respectively take out the magnetic cores in the first material groove and the second material groove and move towards the test fixture, at this time, the two magnetic cores pass through the surface of the paper tape, and the bottom ends of the two magnetic cores are wiped and cleaned by the surface of the paper tape to remove the dust on the end faces of the two magnetic cores. During this process, the support plate can support the paper tape to ensure stable contact between the paper tape and the two magnetic cores. After the wiping and cleaning is completed, the first jaw and the second jaw respectively drive the two paper tapes to move to the test fixture, and the winding motor winds up the paper tape, recovers the used paper tape, and releases a new paper tape onto the support plate. In this way, the magnetic core can be cleaned before testing the inductance of the magnetic core, improving the accuracy of the inductance test of the magnetic core.

[0008] As a further improvement of the above technical solution, a plurality of first spring rods are connected between the bottom side of the support plate and the top side of the base frame, and the plurality of first spring rods can elastically deform in the vertical direction. The plurality of first spring rods can provide elastic support for the support plate. When the first jaw and the second jaw drive the two magnetic cores to pass through the paper tape, in order to make the two magnetic cores in close contact with the paper tape, the two magnetic cores will generate a downward pressure on the support plate. At this time, the plurality of first spring rods can be elastically compressed, preventing the phenomenon of magnetic core damage caused by excessive pressure and ensuring the cleaning effect of the magnetic core.

[0009] As a further improvement of the above technical solution, a guiding inclined surface is arranged on the top side of the support plate, and the guiding inclined surface extends obliquely downward towards the direction close to the transfer rack to one side of the support plate. Since there is a guiding inclined surface on the top side of the support plate, when the first jaw and the second jaw drive the two magnetic cores to pass through the paper tape, they can smoothly move from the bottom side position of the guiding inclined surface to the top side of the support plate. As the first jaw and the second jaw continue to drive the two magnetic cores to translate, the two magnetic cores gradually press down on the guiding inclined surface extending obliquely upward, making the magnetic cores in close contact with the paper tape and ensuring the cleaning effect of the magnetic core.

[0010] As a further improvement of the above technical solution, the testing mechanism includes a testing frame, a first lifting drive and a lifting plate. The first lifting drive is connected to the testing frame, and the lifting plate is connected to the first lifting drive. The first lifting drive can drive the lifting plate to move up and down. A fixing block is connected to the lifting plate. A first sliding seat and a second sliding seat are sequentially and slidably connected to the position of the lifting plate below the fixing block. A second spring rod is connected to the fixing block. The second spring rod presses the first sliding seat downward against the second sliding seat. A pressure sensor is connected to the bottom side of the first sliding seat, and a top rod is connected to the top side of the second sliding seat. The top end of the top rod abuts against the pressure sensor. The upper testing head is connected to the bottom side of the second sliding seat. After the first clamping jaw places the magnetic core on the top side of the testing fixture, the first lifting drive drives the lifting plate to move downward, so that the upper testing head on the bottom side of the second sliding seat presses the magnetic core downward. As the lifting plate gradually moves downward, the second sliding seat moves upward and presses the pressure sensor on the bottom side of the first sliding seat upward through the top rod. At this time, the pressure sensor can read out the pressure value on the magnetic core, which is beneficial to better control the downward pressure and prevent damage caused by excessive pressure on the magnetic core. After the first sliding seat receives the upward top pressure, it will also elastically compress the second spring rod, thereby providing a space for the second sliding seat to move upward. In this way, when the two magnetic cores are pressed against each other for inductance testing, the effect of downward pressure positioning on the magnetic core can be improved, and overpressure protection can be provided for the magnetic core.

[0011] As a further improvement of the above technical solution, a second lifting drive is connected to the testing frame, and the lower testing head is connected to the second lifting drive. The second lifting drive drives the lower testing head to move up and down. By providing a second lifting drive on the testing frame, a driving force for the lower testing head to move in the up and down direction can be provided. When the second clamping jaw moves the magnetic core to the bottom side of the testing fixture, the second lifting drive drives the lower testing head to move upward close to the testing fixture to provide support for the magnetic core. When the testing of the magnetic core is completed, the second clamping jaw clamps the magnetic core again. At this time, the second lifting drive drives the lower testing head to move downward away from the testing fixture to provide a space for the second clamping jaw to take out the magnetic core from the testing fixture downward.

[0012] As a further improvement of the above technical solution, two positioning motors are provided on the blanking frame. The two positioning motors are respectively drivingly connected to the first fixture and the second fixture. The two positioning motors can respectively drive the first fixture and the second fixture to rotate along the axis in the up and down direction. The third clamping jaw and the fourth clamping jaw place the tested magnetic cores into the first fixture and the second fixture respectively, and then the two positioning motors drive the first fixture and the second fixture to rotate respectively to adjust the placement postures of the two magnetic cores for the next process.

[0013] As a further improvement of the above technical solution, the loading mechanism includes a first loading bin, a loading lifting drive, a loading rack, a loading translation drive and a loading gripper. The first loading bin is arranged on the loading lifting drive, and the loading lifting drive can drive the first loading bin to move up and down. A first cavity is arranged in the first loading bin, and a plurality of first supporting grooves are respectively arranged on both sides of the first cavity along the up and down direction. The loading rack is located beside the first loading bin and faces the first cavity. The loading translation drive is arranged on the loading rack, and the loading gripper is arranged on the loading translation drive. The loading translation drive can drive the first material plate to enter and exit the first cavity. When the first material plate is located in the first cavity, both sides of the first material plate are respectively located in two mutually facing first supporting grooves. A first cavity for loading the first material plate is formed in the loading bin. Taking two first supporting grooves located on the same horizontal plane as a supporting group, a plurality of first supporting grooves are respectively inserted into a plurality of supporting groups to respectively position a plurality of first material plates arranged along the up and down direction. A plurality of first material plates can respectively load cores to be tested. When it is necessary to take out the cores on the first material plate for detection, the loading lifting drive drives the loading bin to adjust the height up and down so that the first material plate faces the loading rack. Then the loading translation drive drives the loading gripper to approach the loading rack. After the first material plate is clamped by the loading gripper, the first material plate is pulled out of the first cavity and moved onto the loading rack. When the detection of all the cores on the first material plate is completed, the loading translation drive drives the loading gripper to push the first material plate into the first cavity, and then the loading lifting drive drives the loading bin to move up and down so that the loading gripper can take out the first material plates at other positions. In this way, the automatic loading and unloading of the first material plate can be realized, and the overall processing efficiency can be further improved.

[0014] As a further improvement of the above technical solution, the present invention further includes a storage mechanism. The storage mechanism includes a third material plate, a fourth material plate and a storage moving device. The storage moving device is connected with a storage suction nozzle, and the storage moving device can drive the storage suction nozzle to move between the third material plate, the fourth material plate, the first fixture and the second fixture. When it is necessary to store the cores that have completed the detection, the storage moving device drives the storage suction nozzle to move to the first fixture, and the storage suction nozzle adsorbs the cores located in the first fixture, and then moves to the third material plate. The storage suction nozzle releases the adsorption force on the cores and places the cores on the third material plate. Similarly, the storage moving device drives the storage suction nozzle to move between the second fixture and the fourth material plate, takes out the cores from the second fixture and arranges them on the fourth material plate.

[0015] As a further improvement of the above technical solution, the material storage mechanism includes a first material storage bin, a material storage lifting drive, a material storage rack, a material storage translation drive, and a material storage gripper. The first material storage bin is arranged on the material storage lifting drive, and the material storage lifting drive can drive the first material storage bin to move up and down. A second cavity is arranged in the first material storage bin, and a plurality of second support grooves are respectively arranged on both sides of the second cavity along the up and down direction. The material storage rack is located beside the first material storage bin and faces the second cavity. The material storage translation drive is arranged on the material storage rack, and the material storage gripper is arranged on the material storage translation drive. The material storage translation drive can drive the third material plate to enter and exit the second cavity. When the third material plate is located in the second cavity, both sides of the third material plate are respectively located in two mutually facing second support grooves. Similarly, a second cavity for loading the fourth material plate is formed in the material storage bin. Taking two second support grooves on the same horizontal plane as a support group, a plurality of second support grooves are respectively inserted into a plurality of support groups, and a plurality of fourth material plates are respectively positioned in the up and down direction. A plurality of fourth material plates are equipped with tested magnetic cores. When it is necessary to take out the fourth material plate to place the tested magnetic cores, the material storage lifting drive drives the material storage bin to adjust the height up and down, so that the fourth material plate faces the material storage rack. Then the material storage translation drive drives the material storage gripper to approach the material storage rack. After the material storage gripper clamps the fourth material plate, the fourth material plate is pulled out of the second cavity and moved to the material storage rack. When the fourth material plate is filled with magnetic cores, the material storage translation drive drives the material storage gripper to push the fourth material plate into the second cavity, and the material storage lifting drive drives the material storage bin to move up and down again, so that the material storage gripper can take out the fourth material plates at other positions. In this way, automatic loading and unloading of the third material plate can be realized, and the overall processing efficiency can be further improved. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly describe the drawings required for the description of the embodiments. Obviously, the described drawings are only a part of the embodiments of the present invention, rather than all the embodiments. Those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative efforts.

[0017] Figure 1 is the overall three-dimensional view of the present invention.

[0018] Figure 2 is the three-dimensional view of the cleaning mechanism of the present invention.

[0019] Figure 3 is the three-dimensional view of the testing mechanism of the present invention.

[0020] Figure 4 is the three-dimensional view of the transfer mechanism and the blanking mechanism of the present invention.

[0021] Figure 5It is a perspective view of the loading mechanism of the present invention.

[0022] Figure 6 It is a perspective view of the storage mechanism of the present invention.

[0023] In the accompanying drawings: 100 - loading mechanism, 110 - first material plate, 120 - second material plate, 130 - transfer rack, 131 - first material groove, 132 - second material groove, 140 - loading moving device, 141 - loading suction nozzle, 151 - first loading bin, 152 - loading lifting drive, 153 - loading rack, 154 - loading translation drive, 155 - loading gripper, 200 - testing mechanism, 210 - testing fixture, 220 - upper testing head, 230 - lower testing head, 240 - testing rack, 251 - first lifting drive, 252 - lifting plate, 253 - first sliding seat, 254 - second sliding seat, 255 - second spring rod, 256 - pressure sensor, 257 - ejector rod, 260 - second lifting drive, 300 - transfer mechanism, 310 - first gripper, 320 - second gripper, 400 - unloading mechanism, 410 - unloading rack, 411 - first fixture, 413 - second fixture, 414 - position adjustment motor, 420 - third gripper, 430 - fourth gripper, 500 - cleaning mechanism, 510 - base frame, 520 - unwind roller, 530 - winding roller, 540 - winding motor, 550 - support plate, 551 - guiding inclined surface, 560 - first spring rod, 600 - storage mechanism, 610 - third material plate, 620 - fourth material plate, 630 - storage moving device, 631 - storage suction nozzle, 641 - first storage bin, 642 - storage lifting drive, 643 - storage rack, 644 - storage translation drive, 645 - storage gripper. Detailed Embodiment

[0024] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0025] In the description of the present invention, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0026] In the description of the present invention, "several" means one or more, "multiple" means more than two, and understandings such as "greater than", "less than", and "exceeding" do not include the corresponding number, while understandings such as "above", "below", and "within" include the corresponding number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as "set", "install", and "connect" should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0028] Refer to Figure 1 And Figure 4 , a magnetic core testing machine, including a feeding mechanism 100, a testing mechanism 200, a transfer mechanism 300 and a discharging mechanism 400. Among them, the feeding mechanism 100 includes a first material plate 110, a second material plate 120, a transfer rack 130 and a feeding moving device 140. The transfer rack 130 is provided with a first material groove 131 and a second material groove 132. The feeding moving device 140 is connected with a feeding suction nozzle 141. The feeding moving device 140 can drive the feeding suction nozzle 141 to move between the first material plate 110, the second material plate 120, the first material groove 131 and the second material groove 132. In actual application, the feeding moving device 140 can adopt a robotic arm, and the robotic arm drives the feeding suction nozzle 141 to move along three-dimensional directions, so as to realize the movement between the first material plate 110, the second material plate 120, the first material groove 131 and the second material groove 132; the testing mechanism 200 includes a testing fixture 210, an upper testing head 220 located above the testing fixture 210, and a lower testing head 230 located below the testing fixture 210. The upper testing head 220 can move downward close to or upward away from the testing fixture 210, and the lower testing head 230 can move upward close to or downward away from the lower testing head 230; the transfer mechanism 300 includes a first clamping jaw 310 and a second clamping jaw 320. The first clamping jaw 310 can move between the first material groove 131 and the top side of the testing fixture 210, and the second clamping jaw 320 can move between the second material groove 132 and the bottom side of the testing fixture 210; the discharging mechanism 400 includes a discharging rack 410, a third clamping jaw 420 and a fourth clamping jaw 430. The discharging rack 410 is provided with a first fixture 411 and a second fixture 413. The third clamping jaw 420 can move between the top side of the testing fixture 210 and the first fixture 411, and the fourth clamping jaw 430 can move between the bottom side of the testing fixture 210 and the second fixture 413.

[0029] As described above, a plurality of cores to be detected are respectively placed on the first material plate 110 and the second material plate 120 of the feeding mechanism 100. When the inductance value of the core needs to be tested, the feeding moving device 140 drives the feeding suction nozzle 141 to move to the first material plate 110, and the feeding suction nozzle 141 adsorbs the core located on the first material plate 110, and then moves to the first material groove 131 of the transfer rack 130. The feeding suction nozzle 141 releases the adsorption force on the core and puts the core into the first material groove 131. In this way, the feeding moving device 140 drives the feeding suction nozzle 141 to move between the second material plate 120 and the second material groove 132, and puts the core from the second material plate 120 into the second material groove 132. Then, the first clamping jaw 310 and the second clamping jaw 320 of the transfer mechanism 300 respectively move to the first material groove 131 and the second material groove 132, and clamp out the cores from the first material groove 131 and the second material groove 132. The first clamping jaw 310 puts the core on the top side of the test fixture 210, and the second clamping jaw 320 places the core on the top side of the test fixture 210. The lower test head 230 moves upward close to the test fixture 210 and holds the core located below to keep it in the test fixture 210. At this time, the first clamping jaw 310 and the second clamping jaw 320 can return to their original positions to prepare for feeding the core again. The upper test head 220 moves downward close to the test fixture 210, presses down the core located above, so that the upper and lower cores are in close contact, and the upper and lower cores are energized and tested. After the test is completed, the third clamping jaw 420 and the fourth clamping jaw 430 respectively move to the upper and lower sides of the test fixture 210, take out the upper and lower cores from the test fixture 210, and move them into the first fixture 411 and the second fixture 413 to prepare for the next process. In this way, the core can be automatically fed into the test fixture 210 for power-on testing, and after completion, it can be automatically unloaded, greatly improving the efficiency and safety of the inductance test of the core, thereby improving the production efficiency.

[0030] During the production or storage of the core, it is inevitable that dust will adhere to the core. For high-precision electrical components, foreign objects such as dust will affect the inductance value of the core. In order to improve the accuracy of the inductance test of the core, such as Figure 2As shown in the figure, the present invention further includes a cleaning mechanism 500, which is located between the transfer rack 130 and the testing mechanism 200. The cleaning mechanism 500 includes a base frame 510, a unwind roller 520, a winding roller 530, a winding motor 540 and a support plate 550. The support plate 550 is arranged on the base frame 510. The unwind roller 520 and the winding roller 530 are respectively rotatably connected to the base frame 510. The unwind roller 520 and the winding roller 530 are respectively located on both sides of the support plate 550. The unwind roller 520 can unwind and pass through the top side of the support plate 550 and be connected to the winding roller 530. The winding motor 540 is connected to the base frame 510, and the winding motor 540 is drivingly connected to the winding roller 530. When the first jaw 310 and the second jaw 320 move towards the test fixture 210, they pass through the top side of the support plate 550. A cleaning mechanism 500 for wiping and cleaning the magnetic core is also provided between the transfer rack 130 and the testing mechanism 200. Specifically, a paper tape for wiping and cleaning is loaded on the unwind roller 520. The paper tape is unwound from the unwind roller 520, passes through the top side of the support plate 550 and then is connected to the winding roller 530. When the first jaw 310 and the second jaw 320 respectively take out the magnetic cores from the first material tank 131 and the second material tank 132 and move towards the test fixture 210, at this time, the two magnetic cores pass through the surface of the paper tape, and the bottom ends of the two magnetic cores are wiped and cleaned by the surface of the paper tape to remove the dust on the end faces of the two magnetic cores. During this process, the support plate 550 can support the paper tape to ensure stable contact between the paper tape and the two magnetic cores. After the wiping and cleaning is completed, the first jaw 310 and the second jaw 320 respectively drive the two paper tapes to move to the test fixture 210, while the winding motor 540 winds up the paper tape, recovers the used paper tape, and releases a new paper tape onto the support plate 550. In this way, the magnetic core can be cleaned before testing the inductance of the magnetic core, improving the accuracy of the inductance test of the magnetic core.

[0031] The pallet 550 can be directly fixed to the base frame 510. When the magnetic core contacts the paper tape on the top side of the pallet 550, since the pallet 550 provides rigid support, it is easy to cause damage to the magnetic core. Therefore, in this embodiment, a plurality of first spring rods 560 are connected between the bottom side of the pallet 550 and the top side of the base frame 510. The plurality of first spring rods 560 can elastically deform in the up and down direction. For example, the number of the first spring rods 560 is four, and the four first spring rods 560 are distributed in a rectangle, respectively located at the positions near the four corners on the bottom side of the pallet 550, providing stable support for the pallet 550. The plurality of first spring rods 560 can provide elastic support for the pallet 550. When the first jaw 310 and the second jaw 320 drive two magnetic cores to pass through the paper tape, in order to make the two magnetic cores closely contact the paper tape, the two magnetic cores will generate a downward pressure on the pallet 550. At this time, the plurality of first spring rods 560 can be elastically compressed, preventing the phenomenon of magnetic core damage caused by excessive pressure and ensuring the cleaning effect on the magnetic core.

[0032] The top surface of the pallet 550 can be a horizontal plane. At this time, when the first jaw 310 and the second jaw 320 drive two magnetic cores to pass through the paper tape, it is necessary to further press down the two magnetic cores to ensure stable contact between the bottom end surface of the magnetic core and the paper tape. In order to make the magnetic core and the paper tape contact more stably and avoid overpressing the magnetic core, in this embodiment, a guiding inclined surface 551 is provided on the top side of the pallet 550, and the guiding inclined surface 551 extends obliquely downward toward the direction close to the transfer rack 130 to one side of the pallet 550. Since the guiding inclined surface 551 is provided on the top side of the pallet 550, when the first jaw 310 and the second jaw 320 drive two magnetic cores to pass through the paper tape, they can smoothly move from the bottom side position of the guiding inclined surface 551 to the top side of the pallet 550. As the first jaw 310 and the second jaw 320 continue to drive the two magnetic cores to translate, the two magnetic cores gradually press down the guiding inclined surface 551 extending obliquely upward, making the magnetic core and the paper tape closely contact and ensuring the cleaning effect on the magnetic core.

[0033] There is a driving source in the testing mechanism 200 that can drive the upper testing head 220 to move up and down. After the upper testing head 220 contacts the magnetic core, it will apply a downward pressure to the magnetic core, so that the upper and lower magnetic cores are pressed against each other in contact. In order to better control the downward pressure on the magnetic core, in this embodiment, as Figure 3As shown, the test mechanism 200 includes a test frame 240, a first lifting drive 251 and a lifting plate 252. The first lifting drive 251 is connected to the test frame 240, and the lifting plate 252 is connected to the first lifting drive 251. The first lifting drive 251 can drive the lifting plate 252 to move up and down. The first lifting drive 251 can adopt driving sources such as air cylinders, lead screws or hydraulic drives. A fixed block is connected to the lifting plate 252. A first sliding seat 253 and a second sliding seat 254 are sequentially and slidably connected to the position of the lifting plate 252 below the fixed block. A second spring rod 255 is connected to the fixed block. The second spring rod 255 presses the first sliding seat 253 downward against the second sliding seat 254. A pressure sensor 256 is connected to the bottom side of the first sliding seat 253. A top rod 257 is connected to the top side of the second sliding seat 254. The top end of the top rod 257 abuts against the pressure sensor 256. The upper test head 220 is connected to the bottom side of the second sliding seat 254. After the first jaw 310 places the magnetic core on the top side of the test fixture 210, the first lifting drive 251 drives the lifting plate 252 to move downward, so that the upper test head 220 on the bottom side of the second sliding seat 254 presses the magnetic core downward. As the lifting plate 252 gradually moves downward, the second sliding seat 254 moves upward and presses the pressure sensor 256 on the bottom side of the first sliding seat 253 upward through the top rod 257. At this time, the pressure sensor 256 can read out the pressure value on the magnetic core, which is beneficial to better control the downward pressure and prevent damage caused by excessive pressure on the magnetic core. After the first sliding seat 253 receives the upward pressing force, it will also elastically compress the second spring rod 255, thereby providing a space for the second sliding seat 254 to move upward. In this way, when two magnetic cores are pressed against each other for inductance testing, the effect of downward pressing and positioning of the magnetic core can be improved, and overpressure protection can be provided for the magnetic core.

[0034] Similarly, there is a drive source in the test mechanism 200 that can drive the lower test head 230 to move up and down. In this embodiment, a second lifting drive 260 is connected to the test frame 240. The lower test head 230 is connected to the second lifting drive 260. The second lifting drive 260 drives the lower test head 230 to move up and down. The second lifting drive 260 can adopt driving sources such as air cylinders, lead screws or hydraulic drives. A second lifting drive 260 is provided on the test frame 240 to provide a driving force for the lower test head 230 to move in the up and down directions. When the second jaw 320 moves the magnetic core to the bottom side of the test fixture 210, the second lifting drive 260 drives the lower test head 230 to move upward close to the test fixture 210 to provide support for the magnetic core. When the test of the magnetic core is completed, the second jaw 320 re-clamps the magnetic core. At this time, the second lifting drive 260 drives the lower test head 230 to move downward away from the test fixture 210 to provide a space for the second jaw 320 to take out the magnetic core from the test fixture 210 downward.

[0035] The first fixture 411 and the second fixture 413 are mainly used for placing and fixing the magnetic core. Slot holes can be provided on the first fixture 411 and the second fixture 413 for placing and positioning the magnetic core. The first fixture 411 and the second fixture 413 can be directly installed and fixed on the blanking rack 410. In order to facilitate the grasping of the magnetic core during the operation of the next working station, in this embodiment, two positioning motors 414 are provided on the blanking rack 410. The two positioning motors 414 are respectively drivingly connected to the first fixture 411 and the second fixture 413. The two positioning motors 414 can respectively drive the first fixture 411 and the second fixture 413 to rotate along the vertical axis. The third jaw 420 and the fourth jaw 430 respectively place the tested magnetic cores into the first fixture 411 and the second fixture 413, and then the two positioning motors 414 respectively drive the first fixture 411 and the second fixture 413 to rotate to adjust the placement postures of the two magnetic cores for the next process.

[0036] For the feeding of the first material plate 110, it can be achieved manually or directly by automatic feeding. Specifically, such as Figure 5As shown, the feeding mechanism 100 includes a first feeding bin 151, a feeding lifting drive 152, a feeding rack 153, a feeding translation drive 154 and a feeding gripper 155. The first feeding bin 151 is arranged on the feeding lifting drive 152, and the feeding lifting drive 152 can drive the first feeding bin 151 to move up and down. In order to make the movement range of the feeding lifting drive 152 adjustable, an electric screw rod can be used for the feeding lifting drive 152. A first cavity is arranged in the first feeding bin 151. On both sides of the first cavity, a plurality of first supporting grooves are respectively arranged in the vertical direction. The feeding rack 153 is located beside the first feeding bin 151 and faces the first cavity. The feeding translation drive 154 is arranged on the feeding rack 153, and the feeding gripper 155 is arranged on the feeding translation drive 154. The feeding translation drive 154 can drive the first material plate 110 to enter and exit the first cavity. The feeding translation drive 154 can adopt driving sources such as air cylinders, screw rods or hydraulic cylinders. When the first material plate 110 is located in the first cavity, both sides of the first material plate 110 are respectively located in two mutually facing first supporting grooves. A first cavity for loading the first material plate 110 is formed in the feeding bin. Taking two first supporting grooves on the same horizontal plane as a supporting group, a plurality of first supporting grooves are respectively inserted into a plurality of supporting groups to respectively position a plurality of first material plates 110 in the vertical direction. A plurality of first material plates 110 can respectively load cores to be tested. When it is necessary to take out the cores on the first material plate 110 for detection, the feeding lifting drive 152 drives the first feeding bin 151 to adjust the height up and down, so that the first material plate 110 faces the feeding rack 153. Then the feeding translation drive 154 drives the feeding gripper 155 to approach the feeding rack 153. After the feeding gripper 155 clamps the first material plate 110, the first material plate 110 is pulled out of the first cavity and moved onto the feeding rack 153. When the detection of all the cores on the first material plate 110 is completed, the feeding translation drive 154 drives the feeding gripper 155 to push the first material plate 110 into the first cavity, and then the feeding lifting drive 152 drives the first feeding bin 151 to move up and down, so that the feeding gripper 155 can take out the first material plates 110 at other positions. In this way, the automatic loading and unloading of the first material plate 110 can be realized, and the overall processing efficiency can be further improved.

[0037] Similarly, for the second material plate 120, an automatic loading structure can also be provided within the loading mechanism 100. Specifically, the loading mechanism 100 includes a second loading bin, a third lifting drive, a first material rack, a first translation drive, and a fifth gripper. The second loading bin is disposed on the third lifting drive, and the third lifting drive can drive the second loading bin to move up and down. To enable the adjustable movement range of the third lifting drive, an electric lead screw can be used for the third lifting drive. A third cavity is provided within the first loading bin, and a plurality of third support grooves are respectively arranged along the up and down directions on both sides of the third cavity. The first material rack is located beside the first loading bin and is directly opposite to the third cavity. The first translation drive is disposed on the first material rack, and the fifth gripper is disposed on the first translation drive. The first translation drive can drive the second material plate 120 to enter and exit the third cavity. The first translation drive can adopt driving sources such as air cylinders, lead screws, or hydraulic cylinders. When the second material plate 120 is located within the third cavity, both sides of the second material plate 120 are respectively located within two mutually opposite third support grooves. A third cavity for loading the second material plate 120 is formed within the loading bin. Taking two third support grooves located on the same horizontal plane as a support group, a plurality of third support grooves are respectively inserted into a plurality of support groups to respectively position a plurality of second material plates 120 arranged along the up and down directions. A plurality of cores to be tested can be respectively loaded on the plurality of second material plates 120. When it is necessary to take out the cores on the second material plate 120 for detection, the third lifting drive drives the second loading bin to adjust the height up and down, so that the second material plate 120 is directly opposite to the first material rack. Then, the first translation drive drives the fifth gripper to approach the first material rack. After the fifth gripper clamps the second material plate 120, the second material plate 120 is pulled out of the third cavity and moved onto the first material rack. When the detection of all the cores on the second material plate 120 is completed, the first translation drive drives the fifth gripper to push the second material plate 120 into the third cavity, and the third lifting drive then drives the second loading bin to move up and down, so that the fifth gripper can take out the second material plates 120 at other positions. In this way, the automatic loading and unloading of the second material plate 120 can be realized, further improving the overall processing efficiency.

[0038] The cores placed on the unloading rack 410 can be directly moved by external equipment to the next process for processing, or the cores can be collected and stored first for collective transfer to the next equipment. Specifically, such as Figure 6As shown in the figure, the present invention further includes a material storage mechanism 600. The material storage mechanism 600 includes a third material plate 610, a fourth material plate 620 and a material storage moving device 630. The material storage moving device 630 is connected with a material storage suction nozzle 631. The material storage moving device 630 can drive the material storage suction nozzle 631 to move between the third material plate 610, the fourth material plate 620, the first fixture 411 and the second fixture 413. The material storage moving device 630 can be a robotic arm, and the robotic arm drives the material storage suction nozzle 631 to move in three-dimensional directions, so as to realize the movement between the third material plate 610, the fourth material plate 620, the first fixture 411 and the second fixture 413. When it is necessary to store the detected magnetic cores, the material storage moving device 630 drives the material storage suction nozzle 631 to move to the first fixture 411, and the material storage suction nozzle 631 adsorbs the magnetic cores located in the first fixture 411, and then moves to the third material plate 610. The material storage suction nozzle 631 releases the adsorption force on the magnetic cores and places the magnetic cores on the third material plate 610. Similarly, the material storage moving device 630 drives the material storage suction nozzle 631 to move between the second fixture 413 and the fourth material plate 620, takes out the magnetic cores from the second fixture 413 and arranges them on the fourth material plate 620.

[0039] The replenishment of the third material plate 610 can be achieved manually or through automatic feeding. Specifically, the storage mechanism 600 includes a first storage bin 641, a storage lifting drive 642, a storage rack 643, a storage translation drive 644, and a storage gripper 645. The first storage bin 641 is disposed on the storage lifting drive 642, and the storage lifting drive 642 can drive the first storage bin 641 to move up and down. To flexibly adjust the vertical height of the first storage bin 641, the storage lifting drive 642 can adopt an electric lead screw. A second cavity is provided inside the first storage bin 641. On both sides of the second cavity, a plurality of second support grooves are respectively arranged in the vertical direction. The storage rack 643 is located beside the first storage bin 641 and faces the second cavity. The storage translation drive 644 is disposed on the storage rack 643, and the storage gripper 645 is disposed on the storage translation drive 644. The storage translation drive 644 can drive the third material plate 610 to enter and exit the second cavity. The storage translation drive 644 can adopt a driving source such as a cylinder, an electric lead screw, or a hydraulic cylinder. When the third material plate 610 is located in the second cavity, both sides of the third material plate 610 are respectively located in two mutually facing second support grooves. Similarly, a second cavity for loading the fourth material plate 620 is formed inside the storage bin. Taking two second support grooves on the same horizontal plane as a support group, a plurality of second support grooves are respectively inserted into a plurality of support groups to position a plurality of fourth material plates 620 arranged in the vertical direction. A plurality of fourth material plates 620 are loaded with tested magnetic cores. When it is necessary to take out the fourth material plate 620 to place the tested magnetic cores, the storage lifting drive 642 drives the storage bin to adjust the height up and down so that the fourth material plate 620 faces the storage rack 643. Then, the storage translation drive 644 drives the storage gripper 645 to approach the storage rack 643. After the storage gripper 645 clamps the fourth material plate 620, the fourth material plate 620 is pulled out of the second cavity and moved to the storage rack 643. When the fourth material plate 620 is filled with magnetic cores, the storage translation drive 644 drives the storage gripper 645 to push the fourth material plate 620 into the second cavity. Then, the storage lifting drive 642 drives the storage bin to move up and down so that the storage gripper 645 can take out the fourth material plate 620 at other positions. In this way, the automatic loading and unloading of the third material plate 610 can be realized, further improving the overall processing efficiency.

[0040] Similarly, the replenishment of the fourth material plate 620 can also be achieved in an automatic manner. Specifically, the storage mechanism 600 includes a second storage bin, a fourth lifting drive, a second material rack, a second translation drive, and a sixth jaw. The second storage bin is disposed on the fourth lifting drive, and the fourth lifting drive can drive the second storage bin to move up and down. In order to flexibly adjust the vertical height of the second storage bin, the fourth lifting drive can adopt an electric screw rod. A fourth cavity is provided in the second storage bin, and a plurality of fourth support grooves are respectively arranged on both sides of the fourth cavity in the vertical direction. The second material rack is located beside the second storage bin and faces the fourth cavity. The second translation drive is disposed on the second material rack, and the sixth jaw is disposed on the second translation drive. The second translation drive can drive the third material plate 610 to enter and exit the fourth cavity. The second translation drive can adopt a driving source such as a cylinder, an electric screw rod, or a hydraulic cylinder. When the third material plate 610 is located in the fourth cavity, both sides of the third material plate 610 are respectively located in two opposing fourth support grooves. Similarly, a fourth cavity for loading the fourth material plate 620 is formed in the storage bin. Taking two fourth support grooves on the same horizontal plane as a support group, a plurality of fourth support grooves are respectively inserted into a plurality of support groups to position a plurality of fourth material plates 620 arranged in the vertical direction. A plurality of fourth material plates 620 are loaded with cores that have completed testing. When it is necessary to take out the fourth material plate 620 to place the cores that have completed testing, the fourth lifting drive drives the storage bin to adjust the height up and down so that the fourth material plate 620 faces the second material rack. Then, the second translation drive drives the sixth jaw to approach the second material rack. After the sixth jaw clamps the fourth material plate 620, the fourth material plate 620 is pulled out of the fourth cavity and moved to the second material rack. When the fourth material plate 620 is filled with cores, the second translation drive drives the sixth jaw to push the fourth material plate 620 into the fourth cavity, and the fourth lifting drive drives the storage bin to move up and down again so that the sixth jaw can take out the fourth material plate 620 at other positions. In this way, automatic loading and unloading of the third material plate 610 can be achieved, further improving the overall processing efficiency.

[0041] The blanking mechanism 400 is provided with a driving source that can drive the first jaw 310, the second jaw 320, the third jaw 420 and the fourth jaw 430 to move in three-dimensional directions. For example, the blanking mechanism 400 includes a left-right translation drive, a blanking lifting drive and a front-back translation drive. The blanking lifting drive is connected to the left-right translation drive, and the left-right translation drive can drive the blanking lifting drive to move in the left-right direction. The front-back translation drive is connected to the blanking lifting drive, and the blanking lifting drive can drive the front-back translation drive to move up and down. A first motor is further provided on the blanking lifting drive, and the blanking lifting drive drives the first motor to move up and down. The first jaw 310 is connected to the first motor, and the first motor drives the first jaw 310 to rotate along the axis in the front-back direction. In this way, it can be realized to drive the first jaw 310 to move in three-dimensional directions, and the first jaw 310 can rotate when clamping the magnetic core, so as to facilitate adjusting the posture of the magnetic core and improve the use flexibility. The left-right translation drive, the blanking lifting drive and the front-back translation drive are respectively used to provide the driving force for reciprocating movement in a straight line direction, and there are various structural forms. For example, a cylinder, an electric lead screw or a hydraulic cylinder can be used. Similarly, for the driving of the second jaw 320, the third jaw 420 and the fourth jaw 430, the same driving method as that of the first jaw 310 can also be adopted, and the driving forces in three different directions are combined with each other to provide the driving force for moving in three-dimensional directions.

[0042] The above has specifically described the preferred embodiments of the present invention, but the present invention is not limited to the described embodiments. Those skilled in the art can also make various equivalent variations or substitutions without departing from the spirit of the present invention, and these equivalent variations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. Magnetic core testing machine, characterized by: include: The feeding mechanism comprises a first material plate, a second material plate, a transfer frame and a feeding moving device, wherein the transfer frame is provided with a first material trough and a second material trough, and the feeding moving device is connected with a feeding nozzle, and the feeding moving device can drive the feeding nozzle to move between the first material plate, the second material plate, the first material trough and the second material trough; The test mechanism comprises a test fixture, an upper test head located above the test fixture, and a lower test head located below the test fixture, wherein the upper test head can move downward toward or upward away from the test fixture, and the lower test head can move upward toward or downward away from the lower test head, and the test mechanism also comprises a test frame, a first lifting drive and a lifting plate, wherein the first lifting drive is connected to the test frame, and the lifting plate is connected to the first lifting drive, and the first lifting drive can drive the lifting plate to move up and down, a fixed block is connected to the lifting plate, and a first slide and a second slide are slidably connected in sequence at a position of the lifting plate below the fixed block, a second spring rod is connected to the fixed block, and the second spring rod presses the first slide downward against the second slide, a pressure sensor is connected to the bottom side of the first slide, and a push rod is connected to the top side of the second slide, and the top end of the push rod is against the pressure sensor, and the upper test head is connected to the bottom side of the second slide; The transfer mechanism includes a first clamping jaw and a second clamping jaw, wherein the first clamping jaw can move between the first material trough and the top side of the test fixture, and the second clamping jaw can move between the second material trough and the bottom side of the test fixture; The unloading mechanism includes an unloading rack, a third clamp and a fourth clamp. The unloading rack is provided with a first fixture and a second fixture. The third clamp can move between the top side of the test fixture and the first fixture, and the fourth clamp can move between the bottom side of the test fixture and the second fixture.

2. The magnetic core testing machine according to claim 1, characterized in that: The cleaning mechanism is also included, and the cleaning mechanism is located between the transfer frame and the testing mechanism. The cleaning mechanism includes a base frame, a unwinding roller, a winding roller, a winding motor and a support plate. The support plate is arranged on the base frame, and the unwinding roller and the winding roller are respectively rotatably connected to the base frame, and the unwinding roller and the winding roller are respectively located on both sides of the support plate. The unwinding roller can unwind through the top side of the support plate and be connected to the winding roller, the winding motor is connected to the base frame, and the winding motor drives the winding roller, and the first clamp and the second clamp pass through the top side of the support plate when moving toward the test fixture.

3. The magnetic core testing machine according to claim 2, characterized in that: A plurality of first spring rods are connected between the bottom side of the support plate and the top side of the base frame, and the plurality of first spring rods can be elastically deformed in the up-down direction.

4. The magnetic core testing machine according to claim 3, characterized in that: A guiding slope is arranged on the top side of the support plate, and the guiding slope is inclined downwardly and extends to one side of the support plate in a direction close to the transfer rack.

5. The magnetic core testing machine according to claim 1, characterized in that: The test stand is connected to a second lifting drive, the lower test head is connected to the second lifting drive, and the second lifting drive drives the lower test head to move up and down.

6. The magnetic core testing machine according to claim 1, characterized in that: The unloading rack is provided with two positioning motors, which respectively drive and connect the first fixture and the second fixture. The two positioning motors can respectively drive the first fixture and the second fixture to rotate along the axis in the up-and-down direction.

7. The magnetic core testing machine according to claim 1, characterized in that: The feeding mechanism includes a first feeding bin, a feeding lifting drive, a feeding rack, a feeding translation drive and a feeding clamp. The first feeding bin is arranged on the feeding lifting drive, and the feeding lifting drive can drive the first feeding bin to move up and down. A first cavity is arranged in the first feeding bin, and a plurality of first brackets are respectively arranged on both sides of the first cavity in the up and down directions. The feeding rack is located beside the first feeding bin and opposite to the first cavity. The feeding translation drive is arranged on the feeding rack, and the feeding clamp is arranged on the feeding translation drive. The feeding translation drive can drive the first material plate to enter and exit the first cavity. When the first material plate is located in the first cavity, the two sides of the first material plate are respectively located in two first brackets opposite to each other.

8. The magnetic core testing machine according to claim 1, characterized in that: It also includes a material storage mechanism, which includes a third material plate, a fourth material plate and a material storage moving device, and the material storage moving device is connected to a material storage nozzle, and the material storage moving device can drive the material storage nozzle to move between the third material plate, the fourth material plate, the first fixture and the second fixture.

9. The magnetic core testing machine according to claim 8, characterized in that: The material storage mechanism includes a first material storage bin, a material storage lifting drive, a material storage rack, a material storage translation drive and a material storage clamp. The first material storage bin is arranged on the material storage lifting drive, and the material storage lifting drive can drive the first material storage bin to move up and down. A second cavity is arranged in the first material storage bin, and a plurality of second brackets are respectively arranged on both sides of the second cavity in the up and down directions. The material storage rack is located beside the first material storage bin and opposite to the second cavity. The material storage translation drive is arranged on the material storage rack, and the material storage clamp is arranged on the material storage translation drive. The material storage translation drive can drive the third material plate to enter and exit the second cavity. When the third material plate is located in the second cavity, the two sides of the third material plate are respectively located in two second brackets opposite to each other.

Images