Device and method for measuring inductance value of printed inductor

Abstract

The invention relates to the technical field of inductor inductance measurement and detection, and particularly discloses a device for measuring the inductance value of a printed inductor, which is used for detecting the inductance value of an inductor body and is characterized in that two pins are symmetrically arranged on the two sides of the inductor body, and the device comprises a workbench and an L-shaped conveying assembly, the inductor bodies are sequentially conveyed on the conveying assembly, the device further comprises a pushing assembly, an abutting and detecting assembly and a waste part box, and the abutting and detecting assembly is installed on the workbench and used for detecting the inductor bodies on the conveying assembly one by one; the pushing assembly is used for pushing away the inductor bodies which do not reach the standard through detection; the waste part box is arranged right opposite to the pushing assembly, and a mounting groove allowing the waste part box to be placed is formed in the workbench. Compared with the manual taking, putting back or discarding action of workers in the prior art, the automatic feeding device is achieved in an automatic mode, and the efficiency is higher.

Description

Technical Field

[0001] The present invention belongs to the technical field of inductor inductance measurement and detection, and particularly relates to a device for measuring the inductance value of a printed inductor and a measurement method thereof. Background Art

[0002] A printed inductor is an inductive component manufactured using a printing process, and usually forms an inductive coil by printing a conductive pattern on an insulating substrate. The working principle of a printed inductor is based on the law of electromagnetic induction. When an electric current passes through the printed conductive pattern, a magnetic field is generated around it. When the electric current changes, the magnetic field also changes accordingly, thereby generating an induced electromotive force in the coil, which is the basic characteristic of inductance.

[0003] The inductance value is an important parameter of an inductor, indicating the ability of the inductor to impede the change of electric current. It reflects the magnitude of the induced electromotive force generated by the inductor under a unit change of electric current, and the unit is henry (H). The larger the inductance value, the stronger the impeding effect of the inductor on the change of electric current.

[0004] After the production of the inductor is completed, it needs to be detected to ensure that it meets the production requirements. Currently, most workers need to manually pick up - connect to the detection device - send the qualified products back to the production line or discard the unqualified products beside the production line. This step is very inefficient and will also cause some defective products to be mixed into the sold products. Summary of the Invention

[0005] The purpose of the present invention is to provide a device for measuring the inductance value of a printed inductor and a measurement method thereof, so as to solve the problem of the very low efficiency of the existing technology for measuring the inductance value of an inductor by the steps of: manually picking up - connecting to the detection device - sending the qualified products back to the production line or discarding the unqualified products.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: A device for measuring the inductance value of a printed inductor is used to detect the inductance value of an inductor body, and two pins are symmetrically arranged on both sides of the inductor body. It includes a workbench and a conveying component with an L-shaped layout. The inductor body is sequentially conveyed on the conveying component, and further includes: A detecting and measuring component, installed on the workbench, for detecting each inductor body on the conveying component one by one; A pushing component, used to push away the inductor bodies that do not meet the detection standards; A waste part box, which is arranged opposite to the pushing component, and an installation groove for placing the waste part box is opened on the workbench.

[0007] Preferably, the contact and measurement assembly includes a lifting member, which includes a mounting base fixed on the workbench and a lifting arm slidably mounted in the mounting base. A cross beam is mounted on the lifting arm. Above the cross beam, there is a detection host, and a cushion support is connected between the detection host and the cross beam. Two wires are connected to the bottom of the detection host. The two wires are respectively connected with test clips, and the two test clips are respectively mounted at both ends of the cross beam. A tightening member is mounted in the middle of the cross beam, and the tightening member is jointly composed of an electric push rod embedded in the middle of the cross beam and a rubber plate fixed on the output end of the electric push rod.

[0008] Preferably, the test clip includes an insulating sleeve and a conductive frame inserted into the insulating sleeve. A contact copper sheet is mounted at one end of the conductive frame away from the wire. A hole for the insulating sleeve to be movably inserted is formed at the top of the cross beam.

[0009] Preferably, the contact and measurement assembly further includes a driving member connected to the two insulating sleeves. The driving member includes two connecting cross bars respectively connected to the two insulating sleeves. A pair of insertion and sliding connection holes are symmetrically formed on the side surface of the cross beam for the two connecting cross bars to be inserted respectively.

[0010] Preferably, the driving member further includes a driving gear and two rack plates. The two rack plates are respectively arranged on both sides of the driving gear and are fixedly connected to the exposed ends of the two connecting cross bars respectively. The driving gear is meshed with the two rack plates. A servo motor is mounted at the middle position of the top of the cross beam. The output end of the servo motor is fixedly connected with a rotating shaft, and the driving gear is fixedly sleeved outside the rotating shaft.

[0011] Preferably, the contact copper sheet is sleeved outside the end of the conductive frame, and the two are detachably connected by a fastening bolt, which is convenient for replacing the contact copper sheet.

[0012] Preferably, the pushing assembly includes a pushing table and a ramming rod. The ramming rod is movably mounted in the central open part of the pushing table.

[0013] Preferably, two mounting gaskets are spacedly mounted on the bottom surface of the pushing table, and the two mounting gaskets are both fixed on the workbench by welding.

[0014] Preferably, cushion feet are evenly mounted at the four corners of the bottom of the workbench. Two sliding grooves are symmetrically formed in the mounting groove for the installation and sliding pull-out of the two tracks at the bottom of the waste part box.

[0015] A method for measuring the inductance value of a printed inductor is carried out by using the above-mentioned measuring device for the inductance value of a printed inductor, and includes the following steps: S1. The inductor body sequentially passes through the crossbeam on the conveying component. Each time the detecting component detects, the conveying component pauses briefly to leave time for detection. The lifting component drives the crossbeam to descend, and the pressing component presses the inductor body directly below. S2. Then the driving component starts, driving the two test clips to move towards the inductor body in the middle. The two contact copper sheets press against the two pins, and cooperate with the detection host. The electrical signal is transmitted between the detection host and the inductor body through the contact copper sheets, the conductive frame, and the wires. S3. The detection host measures the inductance value of the inductor body. Then the driving component intervenes to prompt the two test clips to separate, the pressing component retracts upward, the crossbeam is lifted to its original position, waiting for the next inductor body to arrive. Then repeat the above steps again to carry out the detection activity. S4. The pushing component behind the detecting component can push away the inductor body that fails to meet the standard after being detected by the detection host and store it in the waste bin.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. In the present invention, the pushing component and the detecting component are arranged in sequence. The inductor body is first detected by the detecting component, and then passes through the pushing component. The unqualified inductor body will be pushed away by the pushing component and collected in the waste bin. The qualified inductor body can continue to be conveyed backward along with the conveying component. Compared with the actions of manual picking, putting back or discarding by workers in the prior art, it is realized in an automated way, with higher efficiency, and can also avoid the situation of defective products being mixed into the sold products, thus avoiding affecting the reputation of the enterprise.

[0017] 2. When quickly detecting the inductor body in the present invention, the conveying component needs to cooperate to stop briefly. Compared with the traditional way of clamping and detecting on both sides, considering that the inductor body is relatively light in weight and is prone to skewing and other situations, resulting in the failure of the two test clips to align with the two pins on both sides of the inductor body. Before the two test clips are clamped, a pressing component that can apply pressure on the top of the inductor body is introduced to prevent the inductor body from jumping and shifting after being pressured on both sides, ensuring the accuracy and reliability of the quick clamping and detecting operation.

[0018] 3. In the present invention, the clamping and releasing of the two test clips are realized by introducing a driving component. When the servo motor starts, it can drive the rotating shaft to rotate. The rotation of the rotating shaft can drive the driving gear to rotate. The rotation of the driving gear can engage and drive the two rack plates to translate. Specifically, by switching the forward and reverse states of the rotation of the rotating shaft and the driving gear, the relative movement of the two rack plates can be realized, so as to achieve the purpose of clamping and detecting and releasing the two test clips on both sides of the inductor body. Description of the Drawings

[0019] Figure 1 is the front view of the present invention; Figure 2 Top view of the present invention; Figure 3 Stereogram of the present invention; Figure 4 Schematic diagram of the conveying component and the detecting component of the present invention; Figure 5 Schematic diagram of the connection of the cross beam, the detection host, the pressing member, the test clamp, the padding stand and the wire of the present invention; Figure 6 Schematic diagram of the connection of the cross beam, the detection host, the test clamp, the driving member, the padding stand and the wire of the present invention; Figure 7 Schematic diagram of the connection of the cross beam, the driving member, the test clamp and the wire of the present invention; Figure 8 Insulating sleeve, rotating shaft, driving gear, rack plate and connecting cross bar of the present invention.

[0020] In the figure: 1, workbench; 11, foot pad; 12, installation groove; 2, conveying component; 3, inductor body; 31, pin; 4, pushing component; 41, mounting gasket; 42, pushing table; 43, ram rod; 5, detecting component; 51, lifting member; 511, mounting seat; 512, lifting arm; 52, cross beam; 53, detection host; 54, pressing member; 541, electric push rod; 542, rubber plate; 55, test clamp; 551, insulating sleeve; 552, conductive frame; 553, contact copper sheet; 56, driving member; 561, servo motor; 562, rotating shaft; 563, driving gear; 564, rack plate; 565, connecting cross bar; 57, padding stand; 58, wire; 6, waste bin. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Referring to Figures 1-8 as shown, the present invention provides a measuring device for the inductance value of a printed inductor, which is used to detect the inductance value of the inductor body 3. Two pins 31 are symmetrically arranged on both sides of the inductor body 3. The device includes a workbench 1 and a conveying component 2 with an L-shaped layout. The inductor body 3 is sequentially conveyed on the conveying component 2. Four cushion feet 11 are evenly installed at the four corners of the bottom of the workbench 1. The device further includes: a detecting component 5, installed on the workbench 1, for detecting each inductor body 3 on the conveying component 2 one by one; a pushing component 4, used to push away the inductor body 3 that fails to pass the detection. The pushing component 4 includes a pushing table 42 and a ram 43. The ram 43 is movably installed in the central opening of the pushing table 42. Two mounting gaskets 41 are spacedly installed on the bottom surface of the pushing table 42. After the pushing table 42 receives an instruction, the pushing table 42 drives the ram 43 to quickly pop outwards, and can push the unqualified inductor body 3 detected by the detecting component 5 into the waste bin 6 for storage. Both of the two mounting gaskets 41 are fixed on the workbench 1 by welding; a waste bin 6, which is arranged opposite to the pushing component 4, and an installation groove 12 for placing the waste bin 6 is formed on the workbench 1. Among them, the pushing component 4 and the detecting component 5 are arranged in sequence. The inductor body 3 first passes through the detection of the detecting component 5, and then passes through the pushing component 4. The unqualified inductor body 3 will be pushed away by the pushing component 4 and collected in the waste bin 6, and the qualified inductor body 3 can continue to be conveyed backwards along with the conveying component 2.

[0023] The detection component 5 includes a lifting member 51. The lifting member 51 includes a mounting base 511 fixed on the workbench 1 and a lifting arm 512 slidably mounted within the mounting base 511. The inductor body 3 sequentially passes through the cross beam 52 on the conveying component 2. Each time the detection component 5 performs a detection, the conveying component 2 pauses briefly to leave time for the detection. The lifting member 51 drives the cross beam 52 to descend. The cross beam 52 is mounted on the lifting arm 512. Above the cross beam 52, there is a detection host 53. The core function of the detection host 53 is to measure the inductance value. By applying an alternating current signal and measuring its response, the host can accurately calculate key parameters such as the inductance value (L), quality factor (Q value), and equivalent series resistance (ESR) of the inductor element. These parameters are crucial for evaluating the performance and quality of the inductor body 3. The detection host 53 plays a key role in the inductance value detection process. Its functions are not limited to inductance value measurement, but also include automated testing, data recording, high-precision measurement, and multiple testing modes, etc. These functions together ensure the efficiency and accuracy of the inductor test. There is a cushioning support 57 connected between the detection host 53 and the cross beam 52; at the bottom of the detection host 53, there are two wires 58 connected. The two wires 58 are respectively connected with test clips 55, and the two test clips 55 are respectively mounted at both ends of the cross beam 52. Before the two test clips 55 are clamped together, a tightening member 54 capable of applying pressure to the top of the inductor body 3 is introduced to prevent the inductor body 3 from jumping and shifting after being pressured on both sides, ensuring the accuracy and reliability of the rapid clamping detection operation. Specifically, a tightening member 54 is mounted in the middle of the cross beam 52. The tightening member 54 is jointly composed of an electric push rod 541 embedded in the middle of the cross beam 52 and a rubber plate 542 fixed on the output end of the electric push rod 541; The test clip 55 includes an insulating sleeve 551 and a conductive frame 552 inserted into the insulating sleeve 551. At the end of the conductive frame 552 far from the wire 58, there is a contact copper sheet 553; on the top of the cross beam 52, there is a 521 for the insulating sleeve 551 to be movably inserted. The insulating sleeve 551 can prevent the electrical signal from interfering with the cross beam 52. The test clip 55 needs to have good insulation performance to prevent short circuits during the test. At the same time, the design of the test clip 55 also needs to consider electromagnetic shielding to reduce the influence of external interference on the measurement results; The detection component 5 further includes a driving member 56 connected to the two insulating sleeves 551. The driving member 56 includes two connecting cross bars 565 respectively connected to the two insulating sleeves 551. On the side surface of the cross beam 52, there are symmetrically opened a pair of 522 respectively for the two connecting cross bars 565 to be inserted and slidably connected, providing support and limit capabilities for the two relatively translatable rack plates 564, avoiding the collapse of the two rack plates 564, and maintaining the stability and reliability of the relative movement of the two rack plates 564.

[0024] In a further embodiment, refer to Figure 7 And Figure 8, the driving member 56 further includes a driving gear 563 and two rack plates 564. The two rack plates 564 are respectively arranged on both sides of the driving gear 563 and are fixedly connected to the exposed ends of the two connecting cross bars 565. The driving gear 563 is meshed and connected with the two rack plates 564. A servo motor 561 is installed at the central position on the top of the cross beam 52. The output end of the servo motor 561 is fixedly connected with a rotating shaft 562. The driving gear 563 is fixedly sleeved outside the rotating shaft 562. When the servo motor 561 is started, it can drive the rotating shaft 562 to rotate. When the rotating shaft 562 rotates, it can drive the driving gear 563 to rotate. When the driving gear 563 rotates, it can meshingly drive the two rack plates 564 to translate.

[0025] In this embodiment, the clamping and releasing away of the two test clips 55 are realized by introducing the driving member 56. When the servo motor 561 is started, it can drive the rotating shaft 562 to rotate. When the rotating shaft 562 rotates, it can drive the driving gear 563 to rotate. When the driving gear 563 rotates, it can meshingly drive the two rack plates 564 to translate. Specifically, by switching the forward and reverse states of the rotation of the rotating shaft 562 and the driving gear 563, the relative movement of the two rack plates 564 can be realized.

[0026] In a further embodiment, referring to Figure 6 as shown, the contact copper sheet 553 is sleeved outside the end of the conductive frame 552, and the two are detachably connected by a fastening bolt, which is convenient for replacing the contact copper sheet 553.

[0027] In this embodiment, every once in a while, the contact copper sheet 553 sleeved outside the conductive frame 552 can be removed by loosening the fastening bolt, and then a new contact copper sheet 553 can be sleeved on and fixed by tightening the fastening bolt.

[0028] In a further embodiment, referring to Figure 3 as shown, two sliding grooves are symmetrically formed in the installation groove 12 for installing and sliding and pulling out the two tracks at the bottom of the waste part box 6.

[0029] In this embodiment, through the setting of the waste part box 6, after the unqualified products in the waste part box 6 are collected to a certain extent, the labor-saving withdrawal of the waste part box 6 can be realized, reducing the inconvenience of workers' handling, and realizing the convenient transfer purpose by means of the sliding-back characteristic and the forklift in the factory area.

[0030] The present invention also provides a method for measuring the inductance value of a printed inductor, which is performed using the above-mentioned printed inductor inductance value measuring device, and includes the following steps: S1, the inductor body 3 passes through the crossbeam 52 on the conveying component 2 in sequence, and each time the detection component 5 is detected, the conveying component 2 is briefly paused to leave time for detection, and the lifting member 51 drives the crossbeam 52 to descend, and the pressing member 54 presses the inductor body 3 facing below; S2, then the driving member 56 is started, driving the two test clips 55 to press against the middle inductor body 3, and the two contact copper sheets 553 press against the two pins 31, and cooperate with the detection Testing host 53, electrical signals are transmitted between testing host 53 and inductor body 3 by contact copper sheet 553, conductive frame 552 and wire 58; S3, testing host 53 measures the inductance value of inductor body 3, then driving component 56 intervenes, prompting two test clips 55 to withdraw, tightening component 54 to withdraw, beam 52 to lift to original position, waiting for the next inductor body 3 to arrive, then repeating the above steps again, and carrying out testing activities; S4, pushing component 4 at the rear of testing component 5 can push away the inductor body 3 that does not meet the standard after testing by testing host 53, and store it in waste box 6.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for measuring the inductance value of a printed inductor, used for detecting the inductance value of an inductor body (3), wherein two pins (31) are symmetrically arranged on both sides of the inductor body (3), comprising a workbench (1) and an L-shaped conveying component (2), wherein the inductor body (3) is sequentially conveyed on the conveying component (2), characterized in that: Also includes: A detection component (5) is installed on the workbench (1) and is used to detect the inductor bodies (3) on the conveying component (2) one by one; A pushing component (4) is used to push away the inductor body (3) that does not meet the detection standard; The waste box (6) is arranged opposite to the pushing assembly (4), and a mounting groove (12) for placing the waste box (6) is provided on the workbench (1).

2. The device for measuring the inductance of a printed inductor according to claim 1, characterized in that: The detection component (5) comprises a lifting member (51), the lifting member (51) comprises a mounting seat (511) fixed on the workbench (1) and a lifting arm (512) slidably mounted in the mounting seat (511), a crossbeam (52) is mounted on the lifting arm (512), a detection host (53) is arranged above the crossbeam (52), and a padding frame (57) is connected between the detection host (53) and the crossbeam (52); two wires (58) are connected to the bottom of the detection host (53), the two wires (58) are respectively connected to a test clamp (55), and the two test clamps (55) are respectively mounted at two ends of the crossbeam (52), a fastening member (54) is mounted in the middle of the crossbeam (52), and the fastening member (54) is composed of an electric push rod (541) embedded in the middle of the crossbeam (52) and a rubber plate (542) fixed on the output end of the electric push rod (541).

3. The device for measuring the inductance of a printed inductor according to claim 2, characterized in that: The test clip (55) comprises an insulating sleeve (551) and a conductive frame (552) inserted into the insulating sleeve (551); a contact copper sheet (553) is installed at one end of the conductive frame (552) away from the wire (58); and a portion (521) for movably inserting the insulating sleeve (551) is provided at the top of the crossbeam (52).

4. The device for measuring the inductance of a printed inductor according to claim 3, characterized in that: The detection assembly (5) further comprises a driving member (56) connected to the two insulating sleeves (551), the driving member (56) comprising two connecting cross bars (565) respectively connected to the two insulating sleeves (551), and a pair of connecting cross bars (522) respectively inserted and slidably connected to the two connecting cross bars (565) are symmetrically provided on the side surface of the cross beam (52).

5. The device for measuring the inductance of a printed inductor according to claim 4, characterized in that: The driving member (56) further comprises a driving gear (563) and two rack plates (564). The two rack plates (564) are respectively arranged on both sides of the driving gear (563) and are respectively fixedly connected to the exposed ends of the two connecting cross bars (565). The driving gear (563) is meshingly connected with the two rack plates (564). A servo motor (561) is installed at the center of the top of the cross beam (52). The output end of the servo motor (561) is fixedly connected to the rotating shaft (562). The driving gear (563) is fixedly sleeved outside the rotating shaft (562).

6. The device for measuring the inductance of a printed inductor according to claim 3, characterized in that: The contact copper sheet (553) is sleeved outside the end of the conductive frame (552), and the two are detachably connected by fastening bolts, so that the contact copper sheet (553) can be easily replaced.

7. The device for measuring the inductance of a printed inductor according to claim 1, characterized in that: The pushing assembly (4) comprises a pushing platform (42) and a tamping rod (43), wherein the tamping rod (43) is movably mounted in a middle opening of the pushing platform (42).

8. The device for measuring the inductance of a printed inductor according to claim 7, characterized in that: Two mounting gaskets (41) are installed at intervals on the bottom surface of the pushing platform (42), and the two mounting gaskets (41) are fixed on the workbench (1) by welding.

9. A device for measuring the inductance of a printed inductor according to any one of claims 1 to 8, characterized in that: The four corners of the bottom of the workbench (1) are evenly installed with feet (11), and two sliding grooves are symmetrically opened in the installation groove (12) for the installation and sliding of the two rails at the bottom of the waste box (6).

10. A method for measuring the inductance value of a printed inductor, using the device for measuring the inductance value of a printed inductor according to any one of claims 1 to 9, characterized in that: The steps include: S1, the inductor body (3) passes through the crossbeam (52) on the conveying component (2) in sequence, and each time the detection component (5) detects, the conveying component (2) briefly pauses to leave time for the detection, the lifting component (51) drives the crossbeam (52) to descend, and the pressing component (54) presses the inductor body (3) directly below; S2, the driving member (56) is then started, driving the two test clips (55) to abut against the middle inductor body (3), and the two contact copper sheets (553) are pressed against the two pins (31), and in cooperation with the detection host (53), the electrical signal is transmitted between the detection host (53) and the inductor body (3) through the contact copper sheets (553), the conductive frame (552), and the wire (58); S3, the detection host (53) measures the inductance value of the inductor body (3), and then the driving member (56) intervenes to cause the two test clamps (55) to be withdrawn, the fastening member (54) to be withdrawn, and the crossbeam (52) to be lifted to its original position, waiting for the next inductor body (3) to be in place, and then repeating the above steps to carry out the detection activity; S4, the pushing component (4) behind the detection component (5) can push away the inductor body (3) that does not meet the standards after detection by the detection host (53) and store it in the waste box (6).

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