Magnetic core testing machine

Abstract

The present invention relates to the technical field of testing devices, and discloses a magnetic core testing machine, comprising a loading mechanism, a testing mechanism, a transfer mechanism and a unloading mechanism, wherein the loading mechanism comprises a first material plate, a second material plate, a transfer frame and a loading moving device, the transfer frame is provided with a first material trough and a second material trough, the loading moving device is connected with a loading suction nozzle, and the loading moving device can drive the loading suction nozzle to move; the testing mechanism comprises a test fixture, an upper test head and a lower test head, the upper test head can move downward toward or away from the test fixture upward, and the lower test head can move upward toward or away from the lower test head downward; the transfer mechanism comprises a first clamp and a second clamp; the unloading mechanism comprises an unloading frame, a third clamp and a fourth clamp, and the unloading frame is provided with a first fixture and a second fixture. The present invention can automatically load a magnetic core into the test fixture for power-on testing, thereby greatly improving the efficiency and safety of inductance testing of the magnetic core.

Description

Technical Field

[0001] The 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 which the inductance value of the magnetic core needs to be tested before assembling the magnetic core. After the previous production process is completed, the magnetic core is usually arranged on a material board. The current testing method usually involves manually removing the magnetic core from the material board and placing it on the upper and lower sides of the test fixture, and then moving the test head to the magnetic core to conduct a power-on test on the magnetic core. This method has low operating efficiency, and there is a risk of leakage when manually moving the test head to the magnetic core to energize it. Therefore, there is an urgent need for a device that can improve the efficiency and safety of magnetic core testing. Summary of the invention

[0003] The object 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 problem is: The magnetic core testing machine comprises: a feeding mechanism, including 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 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 trough and the second material trough; 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, wherein the upper testing head can move downward toward or upward away from the testing fixture, and the lower testing head can move upward toward or away from the testing fixture. The test head can move upward toward or downward away from the lower test head; the transfer mechanism includes a first clamp and a second clamp, the first clamp can move between the first material trough and the top side of the test fixture, and the second clamp can move between the second material trough and the bottom side of the test fixture; the unloading mechanism includes a 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.

[0005] This technical solution has at least the following beneficial effects: a plurality of magnetic cores to be tested are placed on the first material plate and the second material plate of the feeding mechanism, respectively. When the inductance value of the magnetic core needs to be tested, the feeding moving device drives the feeding nozzle to move to the first material plate, and the feeding nozzle adsorbs the magnetic core on the first material plate, and then moves to the first material slot of the transfer rack. The feeding nozzle releases the adsorption force on the magnetic core and places the magnetic core into the first material slot. In this way, the feeding moving device drives the feeding nozzle to move between the second material plate and the second material slot, and places the magnetic core from the second material plate into the second material slot. Then the first clamp and the second clamp of the transfer mechanism move to the first material slot and the second material slot, respectively, and clamp and take out the magnetic core from the first material slot and the second material slot, respectively. The first clamp places the magnetic core on the top side of the test fixture, and the second clamp places the magnetic core On the top side of the test jig, the lower test head moves upwards towards the test jig and holds the magnetic core located below to keep it in the test jig. At this time, the first clamp and the second clamp can return to reset to prepare for loading the magnetic core again. The upper test head moves downwards towards the test jig and presses down the magnetic core located above so that the upper and lower magnetic cores are in close contact and power-on test is performed on the upper and lower magnetic cores. After the test is completed, the third clamp and the fourth clamp are respectively moved to the upper and lower sides of the test jig, and the upper and lower magnetic cores are taken out of the test jig and moved to the first jig and the second jig to be placed in preparation for the next step. In this way, the magnetic core can be automatically loaded into the test jig for power-on test. After completion, it can be automatically unloaded, which greatly improves the efficiency and safety of inductance testing of the magnetic core, thereby improving production efficiency.

[0006] As a further improvement of the above technical solution, the present invention also includes a cleaning mechanism, which 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. 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. The first clamp and the second clamp pass through the top side of the support plate when they move toward the test fixture. A cleaning mechanism for wiping and cleaning the magnetic cores is also provided 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, and is connected to the winding roller after passing through the top side of the support plate. When the first clamp and the second clamp respectively take out the magnetic cores from the first material trough and the second material trough, they move toward the testing 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 dust on the end faces of the two magnetic cores. In this process, the support plate can support the paper tape to ensure that the paper tape is in stable contact with the two magnetic cores. After the wiping and cleaning is completed, the first clamp and the second clamp respectively drive the two paper tapes to move to the testing fixture, and the winding motor winds up the paper tape, recycles 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, thereby improving the accuracy of the inductance test of the magnetic core.

[0007] 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 be elastically deformed in the up and down directions. The plurality of first spring rods can provide elastic support for the support plate, and when the first clamp and the second clamp drive the 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 exert downward pressure on the support plate, and at this time, the plurality of first spring rods can be elastically compressed to prevent the magnetic cores from being damaged due to excessive pressure, thereby ensuring the cleaning effect of the magnetic cores.

[0008] As a further improvement of the above technical solution, a guide slope is provided on the top side of the support plate, and the guide slope extends downwardly to one side of the support plate in a direction close to the transfer rack. Since the top side of the support plate has a guide slope, when the first clamp and the second clamp drive the two magnetic cores to pass through the paper tape, they can smoothly move from the bottom side of the guide slope to the top side of the support plate. As the first clamp and the second clamp continue to drive the two magnetic cores to translate, the two magnetic cores gradually press down on the guide slope extending upward, so that the magnetic cores are in close contact with the paper tape, ensuring the cleaning effect of the magnetic cores.

[0009] 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, 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 fixed block is connected to the lifting plate, the lifting plate is located below the fixed block and is slidably connected to a first slide and a second slide in sequence, a second spring rod is connected to the fixed block, 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, a push rod is connected to the top side of the second slide, 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. When the first clamp places the magnetic core into the top side of the test fixture, the first lifting drive drives the lifting plate to move downward, so that the upper test head on the bottom side of the second slide presses the magnetic core downward. As the lifting plate gradually moves downward, the second slide moves upward and presses the pressure sensor on the bottom side of the first slide upward through the push rod. At this time, the pressure sensor can read the pressure value on the magnetic core, which is conducive to better control of the downward pressure and prevent damage to the magnetic core caused by excessive pressure. After the first slide is subjected to the upward push pressure, the second spring rod will also be elastically compressed, thereby providing space for the second slide to move upward. In this way, when the two magnetic cores are pressed up and down for inductance testing, the effect of pressing down and positioning the magnetic core can be improved, and the magnetic core can be protected from overpressure.

[0010] As a further improvement of the above technical solution, the test stand is connected with 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. A second lifting drive is provided on the test stand, which can provide a driving force for the lower test head to move in the up and down directions. When the second clamp moves the magnetic core to the bottom side of the test fixture, the second lifting drive drives the lower test head to move upward toward the test fixture to provide support for the magnetic core. After completing the test of the magnetic core, the second clamp re-grips the magnetic core. At this time, the second lifting drive drives the lower test head downward away from the test fixture to provide the second clamp with space to take the magnetic core out of the test fixture downward.

[0011] As a further improvement of the above technical solution, two positioning motors are provided on the unloading rack, and the two positioning motors are respectively driven to connect the first jig and the second jig, and the two positioning motors can respectively drive the first jig and the second jig to rotate along the vertical axis. The third clamp and the fourth clamp place the tested magnetic core into the first jig and the second jig respectively, and then the two positioning motors respectively drive the first jig and the second jig to rotate, and adjust the placement of the two magnetic cores to facilitate the next step.

[0012] As a further improvement of the above technical solution, 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 in and out of 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. A first cavity for loading a first material plate is formed in the loading bin, with two first brackets located on the same horizontal plane as a supporting group, and multiple first brackets are respectively inserted into the multiple supporting groups, and multiple first material plates are respectively arranged and positioned in the up and down directions. Multiple first material plates can be loaded with magnetic cores to be tested respectively. When it is necessary to take out the magnetic cores on the first material plate for testing, the loading lifting drive drives the loading bin to adjust the height up and down so that the first material plate is opposite to the loading rack, and then the loading translation drive drives the loading clamp to approach the loading rack, and after the first material plate is clamped by the loading clamp, the first material plate is pulled out of the first cavity and moved to the loading rack. After the removal and detection of all the magnetic cores of the first material plate are completed, the loading translation drive drives the loading clamp to push the first material plate into the first cavity, and the loading lifting drive drives the loading bin to move up and down, so that the loading clamp can take out the first material plate at other positions. In this way, automatic loading and unloading of the first material plate can be realized, thereby further improving the overall processing efficiency.

[0013] As a further improvement of the above technical solution, the present invention 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. When it is necessary to store the magnetic core that has completed the inspection, the material storage moving device drives the material storage nozzle to move to the first fixture, and the material storage nozzle adsorbs the magnetic core in the first fixture, and then moves to the third material plate, and the material storage nozzle releases the adsorption force on the magnetic core, and puts the magnetic core on the third material plate. Similarly, the material storage moving device drives the material storage nozzle to move between the second fixture and the fourth material plate, and the magnetic core is taken out of the second fixture and placed on the fourth material plate for arrangement.

[0014] 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 clamp; the first material storage bin is arranged on the material storage lifting drive; 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; 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; the material storage clamp is arranged on the material storage translation drive; the material storage translation drive can drive the third material plate in and out of 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. When the fourth material plate is filled with magnetic cores, the material storage translation drive drives the material storage clamp 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, so that the material storage clamp can take out the fourth material plate at other positions. In this way, automatic loading and unloading of the third material plate can be realized, thereby further improving the overall processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0016] Figure 1 It is an overall stereogram of the present invention.

[0017] Figure 2 It is a three-dimensional diagram of the cleaning mechanism of the present invention.

[0018] Figure 3 It is a three-dimensional diagram of the testing mechanism of the present invention.

[0019] Figure 4 It is a stereoscopic diagram of the transfer mechanism and the unloading mechanism of the present invention.

[0020] Figure 5It is a three-dimensional diagram of a feeding mechanism of the present invention.

[0021] Figure 6 It is a three-dimensional diagram of the material storage mechanism of the present invention.

[0022] In the attached drawings: 100-feeding mechanism, 110-first material plate, 120-second material plate, 130-transfer frame, 131-first material trough, 132-second material trough, 140-feeding moving device, 141-feeding suction nozzle, 151-first feeding bin, 152-feeding lifting drive, 153-feeding rack, 154-feeding translation drive, 155-feeding clamp, 200-testing mechanism, 210-testing fixture, 220-upper test head, 230-lower test head, 240-testing rack, 251-first lifting drive, 252-lifting plate, 253-first slide, 254-second slide, 255-second spring rod, 256-pressure sensor, 257-thrust rod, 260-second lifting drive, 300 -transfer mechanism, 310-first clamp, 320-second clamp, 400-unloading mechanism, 410-unloading rack, 411-first fixture, 413-second fixture, 414-positioning motor, 420-third clamp, 430-fourth clamp, 500-cleaning mechanism, 510-base frame, 520-unwinding roller, 530-winding roller, 540-winding motor, 550-support plate, 551-guide slope, 560-first spring rod, 600-material storage mechanism, 610-third material plate, 620-fourth material plate, 630-material storage moving device, 631-material storage nozzle, 641-first material storage bin, 642-material storage lifting drive, 643-material storage rack, 644-material storage translation drive, 645-material storage clamp. DETAILED DESCRIPTION

[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0027] Reference Figure 1 and Figure 4 , a magnetic core testing machine, comprising a feeding mechanism 100, a testing mechanism 200, a transfer mechanism 300 and a feeding mechanism 400, wherein the feeding mechanism 100 comprises a first material plate 110, a second material plate 120, a transfer frame 130 and a feeding moving device 140, the transfer frame 130 is provided with a first material trough 131 and a second material trough 132, the feeding moving device 140 is connected with a feeding nozzle 141, the feeding moving device 140 can drive the feeding nozzle 141 to move The first material plate 110, the second material plate 120, the first material trough 131 and the second material trough 132 move among each other. In practical applications, the loading moving device 140 can be a mechanical arm, and the mechanical arm drives the loading suction nozzle 141 to move in a three-dimensional direction, thereby realizing the movement among the first material plate 110, the second material plate 120, the first material trough 131 and the second material trough 132; the testing mechanism 200 includes a testing fixture 210, an upper A test head 220 and a lower test head 230 located below the test fixture 210, wherein the upper test head 220 can move downward toward or upward away from the test fixture 210, and the lower test head 230 can move upward toward or downward away from the lower test head 230; a transfer mechanism 300 includes a first clamp 310 and a second clamp 320, wherein the first clamp 310 can move between the first material trough 131 and the top side of the test fixture 210, and the second clamp 320 can move between the second material trough 132 and the bottom side of the test fixture 210; a material unloading mechanism 400 includes a material unloading rack 410, a third clamp 420 and a fourth clamp 430, wherein the material unloading rack 410 is provided with a first fixture 411 and a second fixture 413, wherein the third clamp 420 can move between the top side of the test fixture 210 and the first fixture 411, and the fourth clamp 430 can move between the bottom side of the test fixture 210 and the second fixture 413.

[0028] As can be seen from the above, a plurality of magnetic cores to be tested are placed on the first material plate 110 and the second material plate 120 of the feeding mechanism 100, respectively. When the inductance value of the magnetic 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 magnetic core on the first material plate 110, and then moves to the first material slot 131 of the transfer rack 130, and the feeding suction nozzle 141 releases the adsorption force on the magnetic core, and puts the magnetic core into the first material slot. 131, the loading moving device 140 drives the loading suction nozzle 141 to move between the second material plate 120 and the second material trough 132, and puts the magnetic core from the second material plate 120 into the second material trough 132. Then, the first clamping jaw 310 and the second clamping jaw 320 of the transfer mechanism 300 move to the first material trough 131 and the second material trough 132 respectively, and take out the magnetic core from the first material trough 131 and the second material trough 132 respectively. The first clamping jaw 310 puts the magnetic core into the top of the test fixture 210. The second clamping jaw 320 places the magnetic core on the top side of the test fixture 210, and the lower test head 230 moves upwards close to the test fixture 210 and holds the magnetic 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 reset to prepare to load the magnetic core again. The upper test head 220 moves downwards close to the test fixture 210 and presses down the magnetic core located above so that the upper and lower magnetic cores are in close contact, and the upper and lower magnetic cores are energized. After the test is completed, the third clamp 420 and the fourth clamp 430 are moved to the upper and lower sides of the test fixture 210 respectively, and the upper and lower magnetic cores are taken out from the test fixture 210, and moved to the first fixture 411 and the second fixture 413 to be placed in preparation for the next step. In this way, the magnetic core can be automatically loaded into the test fixture 210 for power-on testing. After completion, it is automatically unloaded, which greatly improves the efficiency and safety of inductance testing of the magnetic core, thereby improving production efficiency.

[0029] During the production or storage of magnetic cores, dust will inevitably stick to the cores. For high-precision electrical components, dust and other foreign objects will affect the inductance value of the cores. In order to improve the accuracy of the core inductance test, Figure 2As shown, the present invention also includes a cleaning mechanism 500, which is located between the transfer frame 130 and the testing mechanism 200. The cleaning mechanism 500 includes a base frame 510, a reeling roller 520, a reeling roller 530, a reeling motor 540 and a support plate 550. The support plate 550 is arranged on the base frame 510, and the unwinding roller 520 and the reeling roller 530 are respectively rotatably connected to the base frame 510. The unwinding roller 520 and the reeling roller 530 are respectively located on both sides of the support plate 550. The unwinding roller 520 can unwind through the top side of the support plate 550 and be connected to the reeling roller 530. The reeling motor 540 is connected to the base frame 510. The reeling motor 540 drives and connects to the reeling roller 530. The first clamp 310 and the second clamp 320 pass through the top side of the support plate 550 when they move toward the test fixture 210. A cleaning mechanism 500 for wiping and cleaning the magnetic core is also provided between the transfer rack 130 and the test mechanism 200. Specifically, a paper tape for wiping and cleaning is loaded on the unwinding roller 520, and the paper tape is unwound from the unwinding roller 520, and is connected to the winding roller 530 after passing through the top side of the support plate 550. When the first clamp 310 and the second clamp 320 respectively take out the magnetic cores from the first trough 131 and the second trough 132, they move toward the test fixture 210. At this time, the two magnetic cores pass through the surface of the paper tape, and the surface of the paper tape wipes the two magnetic cores. The bottom end of the magnetic core is wiped and cleaned to remove dust on the end surfaces of the two magnetic cores. During this process, the support plate 550 can support the paper tape to ensure that the paper tape is in stable contact with the two magnetic cores. After the wiping and cleaning is completed, the first clamp 310 and the second clamp 320 respectively drive the two paper tapes to move to the test fixture 210, and the winding motor 540 winds up the paper tape, recycles 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, thereby improving the accuracy of the core inductance test.

[0030] The support plate 550 can be directly fixed on the base frame 510. When the magnetic core contacts the paper tape on the top side of the support plate 550, the support plate 550 provides rigid support, which may easily 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 support plate 550 and the top side of the base frame 510. The plurality of first spring rods 560 can be elastically deformed in the up-down direction. For example, there are four first spring rods 560, which are distributed in a rectangular shape and are respectively located at the bottom side of the support plate 550 near the four corners to provide stable support for the support plate 550. The plurality of first spring rods 560 can provide elastic support for the support plate 550. When the first clamping jaw 310 and the second clamping jaw 320 drive the 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 downward pressure on the support plate 550. At this time, the plurality of first spring rods 560 can be elastically compressed to prevent the phenomenon of damage to the magnetic core caused by excessive pressure, thereby ensuring the cleaning effect of the magnetic core.

[0031] The top surface of the support plate 550 can be a horizontal surface. At this time, when the first clamp 310 and the second clamp 320 drive the two magnetic cores to pass through the paper tape, the two magnetic cores need to be further pressed down to ensure that the bottom end surfaces of the magnetic cores are in stable contact with the paper tape. In order to make the magnetic cores contact with the paper tape more stably and avoid overpressure on the magnetic cores, in this embodiment, a guide slope 551 is provided on the top side of the support plate 550, and the guide slope 551 is inclined downward and extends to one side of the support plate 550 in the direction close to the transfer rack 130. Since the top side of the support plate 550 has a guide slope 551, when the first clamp 310 and the second clamp 320 drive the two magnetic cores to pass through the paper tape, they can move smoothly from the bottom side of the guide slope 551 to the top side of the support plate 550. As the first clamp 310 and the second clamp 320 continue to drive the two magnetic cores to translate, the two magnetic cores gradually press down on the guide slope 551 extending obliquely upward, so that the magnetic cores are in close contact with the paper tape, ensuring the cleaning effect of the magnetic cores.

[0032] The test mechanism 200 has a driving source that can drive the upper test head 220 to move up and down. When the upper test head 220 contacts the magnetic core, it will apply downward pressure to the magnetic core, so that the upper and lower magnetic cores are pressed against each other. In order to better control the downward pressure on the magnetic core, in this embodiment, 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 use a driving source such as a cylinder, a screw rod or a hydraulic drive. A fixed block is connected to the lifting plate 252, and the lifting plate 252 is located under the fixed block. The first slide 253 and the second slide 254 are slidably connected in sequence in the square position, and the second spring rod 255 is connected to the fixed block, and the second spring rod 255 presses the first slide 253 downward against the second slide 254, and the bottom side of the first slide 253 is connected to the pressure sensor 256, and the top side of the second slide 254 is connected to the push rod 257, and the top end of the push rod 257 is against the pressure sensor 256, and the upper test head 220 is connected to the bottom side of the second slide 254. When the first clamp 310 places the magnetic core into 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 slide 254 presses the magnetic core downward. As the lifting plate 252 gradually moves downward, the second slide 254 moves upward and presses the pressure sensor 256 on the bottom side of the first slide 253 upward through the push rod 257. At this time, the pressure sensor 256 can read out the pressure value on the magnetic core, which is conducive to better control of the downward pressure and prevent damage to the magnetic core caused by excessive pressure. After the first slide 253 is subjected to the upward push pressure, the second spring rod 255 will also be elastically compressed, thereby providing space for the second slide 254 to move upward. In this way, when the two magnetic cores are pressed up and down for inductance testing, the effect of pressing down and positioning the magnetic core can be improved, and the magnetic core can be protected from overpressure.

[0033] Similarly, the test mechanism 200 has a driving source that can drive the lower test head 230 to move up and down. In this embodiment, the test frame 240 is connected to a second lifting drive 260, and 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 a driving source such as a cylinder, a screw or a hydraulic drive. A second lifting drive 260 is provided on the test frame 240, which can provide a driving force for the lower test head 230 to move in the up and down directions. When the second clamp 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 toward the test fixture 210 to provide support for the magnetic core. After the test of the magnetic core is completed, the second clamp 320 re-grips the magnetic core. At this time, the second lifting drive 260 drives the lower test head 230 downward away from the test fixture 210 to provide the second clamp 320 with space to take the magnetic core out of the test fixture 210 downward.

[0034] The first jig 411 and the second jig 413 are mainly used to place and fix the magnetic core. Slots can be set on the first jig 411 and the second jig 413 to place and position the magnetic core. The first jig 411 and the second jig 413 can be directly installed and fixed on the unloading rack 410. In order to facilitate the grabbing of the magnetic core during the operation of the next station, in this embodiment, two positioning motors 414 are set on the unloading rack 410. The two positioning motors 414 drive and connect the first jig 411 and the second jig 413 respectively. The two positioning motors 414 can respectively drive the first jig 411 and the second jig 413 to rotate along the vertical axis. The third clamp 420 and the fourth clamp 430 put the tested magnetic core into the first jig 411 and the second jig 413 respectively, and then the two positioning motors 414 drive the first jig 411 and the second jig 413 to rotate respectively, and adjust the placement of the two magnetic cores to facilitate the next step.

[0035] The first material plate 110 can be loaded manually or automatically. Specifically, Figure 5As shown, the feeding mechanism 100 includes a first feeding bin 151, a feeding lifting drive 152, a feeding frame 153, a feeding translation drive 154 and a feeding clamp 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 achieve an adjustable range of motion of the feeding lifting drive 152, the feeding lifting drive 152 can use an electric screw. A first cavity is arranged in the first feeding bin 151, and a plurality of first cavities are arranged on both sides of the first cavity in the up and down directions. The loading rack 153 is located beside the first loading bin 151 and opposite to the first cavity. The loading translation drive 154 is arranged on the loading rack 153. The loading clamp 155 is arranged on the loading translation drive 154. The loading translation drive 154 can drive the first material plate 110 in and out of the first cavity. The loading translation drive 154 can adopt a driving source such as a cylinder, a screw or a hydraulic cylinder. When the first material plate 110 is located in the first cavity, the two sides of the first material plate 110 are respectively located in two first brackets opposite to each other. A first cavity for loading the first material plate 110 is formed in the loading bin, and two first brackets located on the same horizontal plane form a supporting group. The multiple first brackets are respectively inserted into the multiple supporting groups, and the multiple first material plates 110 are respectively arranged and positioned in the up and down directions. The multiple first material plates 110 can be respectively loaded with magnetic cores to be tested. When it is necessary to take out the magnetic cores on the first material plate 110 for testing, the loading lifting drive 152 drives the first loading bin 151 to adjust the height up and down so that the first material plate 110 is directly opposite to the loading rack 153, and then the loading translation drive 154 drives the loading clamp 15 5 is close to the loading rack 153, and after the first material plate 110 is clamped by the loading clamping claw 155, the first material plate 110 is pulled out of the first cavity and moved to the loading rack 153. After all the magnetic cores of the first material plate 110 are removed and tested, the loading translation drive 154 drives the loading clamping claw 155 to push the first material plate 110 into the first cavity, and the loading lifting drive 152 drives the first loading bin 151 to move up and down, so that the loading clamping claw 155 can take out the first material plate 110 at other positions, so that the first material plate 110 can be automatically loaded and unloaded, and the overall processing efficiency can be further improved.

[0036] Similarly, for the second material plate 120, an automatic loading structure may also be provided in 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 clamp. The second loading bin is arranged on the third lifting drive, and the third lifting drive can drive the second loading bin to move up and down. In order to achieve an adjustable range of motion of the third lifting drive, the third lifting drive can adopt an electric screw. A third cavity is provided in the first loading bin, and a plurality of third brackets are respectively provided on both sides of the third cavity in the up and down directions. The first material rack is located beside the first loading bin and directly opposite to the third cavity. The first translation drive is arranged on the first material rack, and the fifth clamp is arranged on the first translation drive. The first translation drive can drive the second material plate 120 in and out of the third cavity. The first translation drive can adopt a driving source such as a cylinder, a screw or a hydraulic cylinder. When the second material plate 120 is located in the third cavity, the two sides of the second material plate 120 are respectively located in two third brackets directly opposite to each other. A third cavity for loading the second material plate 120 is formed in the upper material bin, with two third brackets located on the same horizontal plane as a supporting group, and multiple third brackets are respectively inserted into multiple supporting groups to arrange and position multiple second material plates 120 in the up and down directions respectively. The multiple second material plates 120 can be loaded with magnetic cores to be tested respectively. When it is necessary to take out the magnetic cores on the second material plate 120 for testing, the third lifting drive drives the second upper material bin to adjust the height up and down so that the second material plate 120 is opposite to the first material rack, and then the first translation drive belt Move the fifth clamp close to the first material rack, and after the fifth clamp clamps the second material plate 120, the second material plate 120 is pulled out of the third cavity and moved to the first material rack. After the detection of all the magnetic cores of the second material plate 120 is completed, the first translation drive drives the fifth clamp to push the second material plate 120 into the third cavity, and the third lifting drive drives the second loading bin to move up and down, so that the fifth clamp can take out the second material plate 120 at other positions. In this way, automatic loading and unloading of the second material plate 120 can be realized, further improving the overall processing efficiency.

[0037] The magnetic cores placed on the unloading rack 410 can be directly moved by an external device to the next process for processing, or the magnetic cores can be collected and stored first and then collectively transferred to the next device. Specifically, Figure 6As shown, the present invention also includes a material storage mechanism 600, and 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 to a material storage nozzle 631. The material storage moving device 630 can drive the material storage 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 nozzle 631 to move along a three-dimensional direction, thereby realizing 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 magnetic cores that have completed the inspection, the material storage moving device 630 drives the material storage nozzle 631 to move to the first fixture 411, and the material storage nozzle 631 adsorbs the magnetic core in the first fixture 411, and then moves to the third material plate 610. The material storage nozzle 631 releases the adsorption force on the magnetic core and places the magnetic core on the third material plate 610. Similarly, the material storage moving device 630 drives the material storage nozzle 631 to move between the second fixture 413 and the fourth material plate 620, takes the magnetic core out of the second fixture 413 and places it on the fourth material plate 620 for arrangement.

[0038] The replenishment of the third material plate 610 can be achieved manually or by automatic loading. 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 clamp 645. The first storage bin 641 is arranged on the storage lifting drive 642, and the storage lifting drive 642 can drive the first storage bin 641 to move up and down. In order to achieve flexible adjustment of the upper and lower heights of the first storage bin 641, the storage lifting drive 642 can use an electric screw. The first storage bin 641 is provided with a second cavity. A plurality of second brackets are respectively arranged on both sides of the two cavities in the up and down directions. The material storage rack 643 is located beside the first material storage bin 641 and opposite to the second cavity. The material storage translation drive 644 is arranged on the material storage rack 643. The material storage clamp 645 is arranged on the material storage translation drive 644. The material storage translation drive 644 can drive the third material plate 610 in and out of the second cavity. The material storage translation drive 644 can adopt a driving source such as a cylinder, an electric screw or a hydraulic cylinder. When the third material plate 610 is located in the second cavity, the two sides of the third material plate 610 are respectively located in two second brackets opposite to each other. Similarly, a second cavity for loading the fourth material plate 620 is formed in the material storage bin, with two second brackets located on the same horizontal plane as a supporting group, and multiple second brackets are respectively inserted into multiple supporting groups, and multiple fourth material plates 620 are respectively arranged and positioned in the up and down directions. Multiple fourth material plates 620 are equipped with tested magnetic cores. When it is necessary to take out the fourth material plate 620 to place the tested magnetic core, the material storage lifting drive 642 drives the material storage bin to adjust the height up and down so that the fourth material plate 620 is opposite to the material storage rack 643, and then the material storage translation drive 644 drives the storage bin to move upward and downward. The material clamp 645 is close to the material storage rack 643, and after the fourth material plate 620 is clamped by the material storage clamp 645, the fourth material plate 620 is pulled out of the second cavity and moved to the material storage rack 643. When the fourth material plate 620 is filled with magnetic cores, the material storage translation drive 644 drives the material storage clamp 645 to push the fourth material plate 620 into the second cavity, and the material storage lifting drive 642 drives the material storage bin to move up and down, so that the material storage clamp 645 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 realized, further improving the overall processing efficiency.

[0039] 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 material storage bin, a fourth lifting drive, a second material rack, a second translation drive and a sixth clamp. The second material storage bin is arranged on the fourth lifting drive, and the fourth lifting drive can drive the second material storage bin to move up and down. In order to achieve flexible adjustment of the upper and lower heights of the second material storage bin, the fourth lifting drive can adopt an electric screw. A fourth cavity is arranged in the second material storage bin, and a plurality of fourth brackets are arranged on both sides of the fourth cavity in the up and down directions respectively. The second material rack is located beside the second material storage bin and is opposite to the fourth cavity. The second translation drive is arranged on the second material rack, and the sixth clamp is arranged on the second translation drive. The second translation drive can drive the third material plate 610 in and out of the fourth cavity. The second translation drive can adopt a driving source such as a cylinder, an electric screw or a hydraulic cylinder. When the third material plate 610 is located in the fourth cavity, the two sides of the third material plate 610 are respectively located in two fourth brackets facing each other. Similarly, a fourth cavity for loading the fourth material plate 620 is formed in the material storage bin, with two fourth brackets located on the same horizontal plane as a supporting group, and multiple fourth brackets are respectively inserted into multiple supporting groups, and multiple fourth material plates 620 are respectively arranged and positioned in the up and down directions. The multiple fourth material plates 620 are equipped with tested magnetic cores. When the fourth material plate 620 needs to be taken out to place the tested magnetic core, the fourth lifting drive drives the material storage bin to adjust the height up and down so that the fourth material plate 620 is opposite to the second material rack, and then the second The translation drive drives the sixth clamp to approach the second material rack, and after the sixth clamp 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 magnetic cores, the second translation drive drives the sixth clamp 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, so that the sixth clamp can take out the fourth material plate 620 from other positions. In this way, automatic loading and unloading of the third material plate 610 can be realized, further improving the overall processing efficiency.

[0040] The unloading mechanism 400 has a driving source that can drive the first clamp 310, the second clamp 320, the third clamp 420 and the fourth clamp 430 to move in a three-dimensional direction. For example, the unloading mechanism 400 includes a left and right translation drive, a unloading lifting drive and a front and rear translation drive. The unloading lifting drive is connected to the left and right translation drive, and the left and right translation drive can drive the unloading lifting drive to move in the left and right directions. The front and rear translation drive is connected to the unloading lifting drive, and the unloading lifting drive can drive the front and rear translation drive to move up and down. A first motor is also provided on the unloading lifting drive, and the unloading lifting drive drives the first motor to move up and down. The first clamp 310 is connected to the first motor, and the first motor drives the first clamp 310 to rotate along the axis of the front and rear direction. In this way, the first clamp 310 can be driven to move in a three-dimensional direction, and the first clamp 310 can rotate when clamping the magnetic core to facilitate the adjustment of the posture of the magnetic core and improve the flexibility of use. The left and right translation drive, the material unloading lifting drive and the front and rear translation drive are used to provide driving force for reciprocating activities in a linear direction, respectively. There are many structural forms, for example, a cylinder, an electric screw or a hydraulic cylinder can be used. Similarly, the second clamping jaw 320, the third clamping jaw 420 and the fourth clamping jaw 430 can also be driven in the same way as the first clamping jaw 310, and the linear drives in three different directions are combined to provide driving force for activities in three-dimensional directions.

[0041] The preferred embodiments of the present invention are described in detail above, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the invention. These equivalent modifications 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 (100) comprises a first material plate (110), a second material plate (120), a transfer frame (130) and a feeding moving device (140), wherein the transfer frame (130) is provided with a first material trough (131) and a second material trough (132), and the feeding moving device (140) is connected with a feeding suction nozzle (141), and 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 trough (131) and the second material trough (132); A testing mechanism (200), comprising 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), wherein the upper testing head (220) can move downward toward or upward away from the testing fixture (210), and the lower testing head (230) can move upward toward or downward away from the lower testing head (230); The transfer mechanism (300) comprises a first clamping jaw (310) and a second clamping jaw (320), wherein the first clamping jaw (310) is movable between the first material trough (131) and the top side of the test fixture (210), and the second clamping jaw (320) is movable between the second material trough (132) and the bottom side of the test fixture (210); The unloading mechanism (400) comprises an unloading frame (410), a third clamping jaw (420) and a fourth clamping jaw (430); the unloading frame (410) is provided with a first fixture (411) and a second fixture (413); the third clamping jaw (420) is movable between the top side of the test fixture (210) and the first fixture (411); and the fourth clamping jaw (430) is movable between the bottom side of the test fixture (210) and the second fixture (413).

2. The magnetic core testing machine according to claim 1, characterized in that: The cleaning mechanism (500) is also included. The cleaning mechanism (500) is located between the intermediate transfer frame (130) and the testing mechanism (200). The cleaning mechanism (500) includes a base frame (510), an unwinding 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 unwinding roller (520) and the winding roller (530) are respectively rotatably connected to the base frame (510). (520) and the winding roller (530) are respectively located on both sides of the support plate (550), the unwinding roller (520) can unwind 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), the winding motor (540) drives the winding roller (530), and the first clamping jaw (310) and the second clamping jaw (320) pass through the top side of the support plate (550) when moving toward the test fixture (210).

3. The magnetic core testing machine according to claim 2, characterized in that: A plurality of first spring rods (560) are connected between the bottom side of the support plate (550) and the top side of the base frame (510), and the plurality of first spring rods (560) can be elastically deformed in an up-and-down direction.

4. The magnetic core testing machine according to claim 3, characterized in that: A guiding inclined surface (551) is provided on the top side of the support plate (550), and the guiding inclined surface (551) extends downwardly in an inclined direction towards the transfer rack (130) to one side of the support plate (550).

5. The magnetic core testing machine according to claim 1, characterized in that: The testing mechanism (200) comprises a testing frame (240), a first lifting drive (251) and a lifting plate (252), wherein the first lifting drive (251) is connected to the testing frame (240), 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 lifting plate (252) is connected to a fixed block, and the lifting plate (252) is slidably connected to a first slide seat (252) at a position below the fixed block. 3) and a second slide (254), the fixed block being connected to a second spring rod (255), the second spring rod (255) pressing the first slide (253) downward against the second slide (254), the bottom side of the first slide (253) being connected to a pressure sensor (256), the top side of the second slide (254) being connected to a push rod (257), the top end of the push rod (257) being pressed against the pressure sensor (256), and the upper test head (220) being connected to the bottom side of the second slide (254).

6. The magnetic core testing machine according to claim 5, characterized in that: The test frame (240) is connected to a second lifting drive (260), the lower test head (230) is connected to the second lifting drive (260), and the second lifting drive (260) drives the lower test head (230) to move up and down.

7. The magnetic core testing machine according to claim 1, characterized in that: The unloading rack (410) is provided with two positioning motors (414), and the two positioning motors (414) respectively drive and connect the first jig (411) and the second jig (413). The two positioning motors (414) can respectively drive the first jig (411) and the second jig (413) to rotate along an axis in an up-and-down direction.

8. The magnetic core testing machine according to claim 1, characterized in that: The feeding mechanism (100) comprises a first feeding bin (151), a feeding lifting drive (152), a feeding frame (153), a feeding translation drive (154) and a feeding clamp (155); the first feeding bin (151) is arranged on the feeding lifting drive (152); the feeding lifting drive (152) can drive the first feeding bin (151) to move up and down; a first cavity is arranged in the first feeding bin (151); a plurality of first brackets are arranged on both sides of the first cavity in the up and down directions; The rack (153) is located beside the first loading bin (151) and directly opposite to the first cavity, the loading translation drive (154) is arranged on the loading rack (153), and the loading clamp (155) is arranged on the loading translation drive (154). The loading translation drive (154) can drive the first material plate (110) to enter and exit the first cavity. When the first material plate (110) is located in the first cavity, the two sides of the first material plate (110) are respectively located in two first brackets directly opposite to each other.

9. The magnetic core testing machine according to claim 1, characterized in that: The invention also includes a material storage mechanism (600), wherein the material storage mechanism (600) includes a third material plate (610), a fourth material plate (620) and a material storage moving device (630), wherein the material storage moving device (630) is connected to a material storage nozzle (631), and the material storage moving device (630) can drive the material storage nozzle (631) to move between the third material plate (610), the fourth material plate (620), the first fixture (411) and the second fixture (413).

10. The magnetic core testing machine according to claim 9, characterized in that: The material storage mechanism (600) comprises a first material storage bin (641), a material storage lifting drive (642), a material storage frame (643), a material storage translation drive (644) and a material storage clamp (645); the first material storage bin (641) is arranged on the material storage lifting drive (642); the material storage lifting drive (642) can drive the first material storage bin (641) to move up and down; a second cavity is arranged in the first material storage bin (641); a plurality of second brackets are arranged on both sides of the second cavity in the up and down directions respectively; The rack (643) is located beside the first material storage bin (641) and directly opposite to the second cavity, the material storage translation drive (644) is arranged on the material storage rack (643), the material storage clamp (645) is arranged on the material storage translation drive (644), and the material storage translation drive (644) can drive the third material plate (610) to enter and exit the second cavity. When the third material plate (610) is located in the second cavity, the two sides of the third material plate (610) are respectively located in two second brackets directly opposite to each other.

Images