Measuring system for automatically measuring impedance after part welding

Abstract

A measuring system for automatic impedance measurement after welding of parts, where each part (1) has a coil, a first weld leg (11) and a second weld leg (12), where both ends of the coil are welded to the first weld leg and the second weld leg, respectively, the measuring system comprising a first probe (3), the first end (31) of each first probe (3) is in electrical contact with the first welding pin (11) of the corresponding part, and the second end of each first probe (3) is connected to an impedance measuring instrument; and a second probe (4), a first end (41) of each second probe (4) being in electrical contact with a second weld leg (12) of the respective each part, a second end of each second probe being connected to an impedance meter, where the measurement system is configured to form a circuit loop when both ends of the coil of each part are welded to the first and second weld legs, respectively, and the impedance meter is configured to measure the impedance of the coil of each part. Therefore, the impedance measuring instrument can automatically measure impedance.

Description

Technical Field

[0001] The utility model relates to a measuring system for automatically measuring impedance after parts are welded, and particularly to a measuring system for automatically measuring impedance after the voice coil wire of a microphone is welded. Background Art

[0002] In the assembly process of a microphone, the voice coil wire, welding piece and welding leg of a product to be processed (hereinafter referred to as parts) need to be welded together. Figure 1 FIG. 10 is a schematic diagram of a traditional part 1 to be welded and a welding carrier 2. In the traditional part welding technical solution, after the automatic welding of the voice coil wire, welding piece and welding leg is completed, it is necessary to manually measure the overall impedance of the voice coil wire of each product to be processed after welding by using a general multimeter.

[0003] However, there are the following problems in using a general multimeter to measure the overall impedance: the working efficiency of manually lapping and measuring the impedance of the voice coil wire after welding is low, usually taking 3 - 5 seconds; the welding quality condition is judged manually, and the actual measurement data cannot be effectively traced, and the process control ability is poor; in addition, there is a risk of missing product testing during manual measurement; and the labor intensity of employees is high, and more than 1200 measurements are required per shift per day.

[0004] Therefore, a measuring system capable of automatically measuring impedance after the voice coil wire is welded is needed. Summary of the Utility Model

[0005] The present utility model is made in view of the problems of the above-mentioned prior art, and the purpose of the present utility model is to provide a measuring system for automatically measuring impedance after parts are welded.

[0006] The present utility model mainly realizes the automatic measurement of impedance by arranging two metal probes on each insulating fixing table of a welding carrier for automatic welding of parts, electrically contacting the two metal probes with two welding legs respectively, and externally connecting an impedance measuring instrument to form a circuit loop after welding is completed. Therefore, the operation is convenient and the working efficiency is high.

[0007] The object of the present utility model is achieved by providing a measurement system for automatically performing impedance measurement after parts are welded. Each part has a coil, a first welding pin, and a second welding pin. The two ends of the coil are respectively welded to the first welding pin via a first welding portion and to the second welding pin via a second welding portion. The measurement system includes at least one first metal probe, wherein the first end of each first metal probe is configured to be in electrical contact with the first welding pin of each corresponding part, and the second end of each first metal probe is configured to be connected to a first measurement portion of a corresponding measurement channel of an impedance measuring instrument; and at least one second metal probe, wherein the first end of each second metal probe is configured to be in electrical contact with the second welding pin of each corresponding part, and the second end of each second metal probe is configured to be connected to a second measurement portion of a corresponding measurement channel of the impedance measuring instrument. The measurement system is configured to form a circuit loop consisting of the coil, the first welding portion, the first welding pin, the first metal probe, the impedance measuring instrument, the second metal probe, the second welding pin, and the second welding portion when the two ends of the coil of each part are respectively welded to the first welding portion and the second welding portion, so that the impedance measuring instrument can automatically measure the impedance of the circuit loop.

[0008] In a preferred embodiment of the present utility model, the coil is the voice coil wire of a microphone.

[0009] In a preferred embodiment of the present utility model, the first welding pin includes a horizontally arranged first welding piece and a vertically arranged first pin.

[0010] In a preferred embodiment of the present utility model, the first welding piece is in electrical contact with the first end of each corresponding first metal probe, and the first end of each corresponding first metal probe is provided with a thickened portion to enhance the electrical connection with the first welding piece.

[0011] In a preferred embodiment of the present utility model, the second welding pin includes a horizontally arranged second welding piece and a vertically arranged second pin.

[0012] In a preferred embodiment of the present utility model, the second pin is in electrical contact with the first end of each corresponding second metal probe, and the first end of the second metal probe is provided with a claw portion that is in electrical contact with the second pin.

[0013] In a preferred embodiment of the present utility model, the claw portion includes at least two claws that are circumferentially spaced apart from each other, and at least one of the claws can be in electrical contact with the second pin.

[0014] In a preferred embodiment of the present utility model, the measurement system further includes a welding carrier for carrying the parts, and the welding carrier has at least one carrying position for carrying each part.

[0015] In a preferred embodiment of the present utility model, a fixing table made of insulating material is provided above each loading position of the welding carrier. The fixing table is configured to include a flat portion, a protruding portion protruding vertically upward by a first height from a part of the flat portion, and a holding portion extending from a side surface of the flat portion.

[0016] In a preferred embodiment of the present utility model, the flat portion is provided with a first through hole extending towards the first welding leg of the part, and a corresponding first metal probe can pass through the first through hole and be fixed in the first through hole; the protruding portion is provided with a second through hole extending towards the second welding leg of the part, and a corresponding second metal probe can pass through the second through hole and be fixed in the second through hole; and the holding portion is provided with a slit opening towards the second welding leg of the part to hold the vertically arranged second pin of the second welding leg in the slit.

[0017] In a preferred embodiment of the present utility model, the measuring system further includes a visual operation interface, and the impedance measuring instrument is connected to the visual operation interface.

[0018] In a preferred embodiment of the present utility model, the measuring system further includes a production execution system, and the impedance measuring instrument is connected to the production execution system.

[0019] Through the above-mentioned measuring system of the present utility model, the welding impedance can be automatically detected after the automatic welding of the parts, so as to achieve the following technical effects: about 3-5 seconds of time required for manual measurement can be saved for each part, the labor intensity of employees is reduced, and the labor cost is saved; in addition, the measuring system can intelligently judge the quality of the actually measured parts after welding through the impedance range set by the impedance measuring instrument itself, so as to intelligently judge whether it is a good product or not. The production execution system counts the process yield of this process, and the equipment performs 100% impedance measurement without omission; and the manual operation intensity is reduced, and there is no need for manual measurement and manual quality judgment. Description of the Drawings

[0020] Other objects and features of the present utility model will become more easily understood through the following detailed description of the specific embodiments of the present utility model in conjunction with the drawings. In the drawings:

[0021] Figure 1 is a schematic diagram of a traditional part to be welded and a welding carrier;

[0022] Figure 2 is a schematic diagram of a part to be welded and a welding carrier that form a part of the automatic measuring system according to the present utility model; and

[0023] Figure 3 is according to the present utility model Figure 2Partial enlarged view of the welding feet of the parts to be welded placed on the welding carrier in electrical contact with the metal probes. Detailed implementation mode

[0024] The preferred implementation mode of the present utility model will be described in more detail with reference to the accompanying drawings below.

[0025] Figure 2 Schematic diagram of the parts to be welded and the welding carrier that are part of the automatic measurement system according to the present utility model, which shows the welding carrier and one part to be welded placed on the welding carrier (in actual production, multiple parts to be welded can be placed in the welding carrier at the same time for automatic welding, Figure 2 only for illustrative purposes). Two metal probes are provided on each fixing table of the welding carrier, respectively called the first metal probe and the second metal probe, and the two metal probes can be in electrical contact with two welding feet on the corresponding parts respectively. Figure 3 is according to the present utility model Figure 2 Partial enlarged view of the welding feet of the parts to be welded placed on the welding carrier in electrical contact with the metal probes, indicated by the virtual circle A - A, which specifically shows the welding feet of the parts to be welded in electrical contact with the metal probes to form a circuit loop.

[0026] The following combines the present utility model Figure 2 and Figure 3 Specifically describe the specific structure of the measurement system for automatically performing impedance measurement after welding the parts to be welded according to the present utility model.

[0027] In the present utility model, a measurement system for automatically performing impedance measurement after welding parts is provided, as Figure 2 shown, where each part 1 has a coil (not shown), a first welding foot 11 and a second welding foot 12, as Figure 3 more clearly shown. The two ends of the coil are respectively welded to the first welding foot via the first welding part and welded to the second welding foot via the second welding part. The coil is particularly the voice coil wire of a microphone. Of course, according to the actual welding requirements, the coil can also be the coil of other devices to be welded.

[0028] In the present utility model, the measurement system includes at least one first metal probe 3, wherein the first end 31 of each first metal probe 3 is configured to be in electrical contact with the first welding leg 11 of each corresponding part 1, and the second end of each first metal probe 3 is configured to be connected to the first measurement part of a corresponding measurement channel of an impedance measuring instrument having at least one measurement channel. The impedance measuring instrument is preferably a multi-channel impedance measuring instrument having a plurality of measurement channels. Of course, those skilled in the art can conceive of using an impedance measuring instrument having any number of measurement channels according to actual needs. For convenience, Figure 2 and Figure 3 the impedance measuring instrument and the connecting wires connecting the probes to the impedance measuring instrument are not drawn in. The measurement system further includes at least one second metal probe 4, wherein the first end 41 of each second metal probe 4 is configured to be in electrical contact with the second welding leg 12 of each corresponding part 1, and the second end of each second metal probe 4 is configured to be connected to the second measurement part of a corresponding measurement channel of the above-mentioned impedance measuring instrument. That is to say, for each part to be welded, the first metal probe 3 and the second metal probe 4 are used in pairs to respectively make electrical contact with the two welding legs of the part. When there are multiple parts to be welded, each pair of probes in multiple pairs of metal probes is required to respectively make electrical contact with the two welding legs of each corresponding part among the multiple parts 1 to be welded. In the present utility model, the measurement system is configured such that when the two ends of the coil of each part are respectively welded to the first welding part and the second welding part, the coil, the first welding part, the first welding leg 11, the first metal probe 3 (including its connecting wire to the impedance measuring instrument), the impedance measuring instrument, the second metal probe 4 (including its connecting wire to the impedance measuring instrument), the second welding leg 12, and the second welding part form a circuit loop, so that the impedance measuring instrument can automatically measure the impedance of the circuit loop.

[0029] Next, in conjunction with Figure 3 , it will be more specifically described how the coil of the part, the first welding leg and the second welding leg of the part, and the first metal probe and the second metal probe provided on the corresponding fixing table of the welding carrier carrying the part are specifically connected to achieve the above-mentioned circuit loop.

[0030] In the present utility model, in conjunction with Figure 3It can be seen more clearly that, preferably, the first welding pin 11 includes a first welding piece 111 arranged substantially horizontally and a first pin 112 arranged substantially vertically. More preferably, the lower end of the first pin is riveted to the first end of the first welding piece at a first riveting position 113 of the insulating board 13 of the part. Of course, those skilled in the art can also conceive that the first welding piece and the first pin are integrated. Preferably, the first welding part is located at this first riveting position. Among them, preferably, the insulating board 13 is arranged on the stud and fixed with screws so as to be located between the coil below and the welding pin above. The first welding part is located at this first riveting position 113 so that one end of the coil, the first welding piece and the first pin can be electrically connected to each other after welding. Preferably, the first welding piece 111, preferably the second end of the first welding piece 111, is in electrical contact with the first end 31 of each corresponding first metal probe 3. The first end 31 of each corresponding first metal probe 3 is provided with a thickened part to enhance the electrical connection with the second end of the first welding piece. Of course, those skilled in the art can also conceive that the first pin is in electrical contact with the first end of each corresponding first metal probe to achieve electrical connection. Preferably, the second end of the first welding piece 111 is pressed against the first end 31 of each corresponding first metal probe 3, which is convenient for connection and reduces the workload. Of course, those skilled in the art can also conceive of any other electrical connection method between them, as long as good electrical connection can be achieved when the first welding piece or the second end of the first welding piece is in electrical contact with the first end of each corresponding first metal probe.

[0031] In the present utility model, in combination with Figure 3 It can be seen more clearly that, preferably, the second welding pin 12 also includes a second welding piece 121 arranged substantially horizontally and a second pin 122 arranged substantially vertically. More preferably, the lower end of the second pin 122 is riveted to the first end of the second welding piece at a second riveting position 123 of the insulating board 13 of the part. Of course, those skilled in the art can also conceive that the second welding piece and the second pin are integrated. Preferably, the second welding part is located at this second riveting position. In the present utility model, preferably, the second pin 122 is in electrical contact with the first end 41 of each corresponding second metal probe 4. Preferably, the first end 41 of the second metal probe 4 is provided with a claw part, and the claw part is in electrical contact with the second pin so as to achieve electrical connection between the two. Preferably, the claw part includes at least two claws circumferentially spaced apart from each other, and at least one of the claws can be in electrical contact with the second pin. Of course, those skilled in the art can also conceive of any other electrical connection method between them, as long as good electrical connection between them can be achieved.

[0032] In the present utility model, the measurement system further includes the welding carrier 2 for carrying the parts 1 as described above. The welding carrier 2 has at least one corresponding carrying position 22 for carrying each part 1, as Figure 2 can be clearly seen. Above each carrying position 22 of the welding carrier, a fixing platform 21 made of insulating material is provided. The fixing platform 21 is configured to include a flat portion 211, a protruding portion 212 protruding vertically upward from a part of the flat portion by a first height, and a holding portion 213 extending from the side surface of the flat portion, as Figure 2 , shown in FIG. 3. The first height is not limited as long as the first height can facilitate the setting of a through hole for placing a probe in the protruding portion 212. In addition, the structure of the fixing platform 21 is not limited to the shape and size as described above and in the Figure 2 accompanying drawings. As long as it can achieve its technical purpose, those skilled in the art can conceive of any other shape and size of the fixing platform according to needs.

[0033] In the present utility model, preferably, the flat portion 211 is provided with a first through hole extending toward the first welding leg of the part. The corresponding first metal probe 3 can pass through the first through hole and be fixed in the first through hole; the protruding portion 212 is provided with a second through hole extending toward the second welding leg of the part. The corresponding second metal probe 4 can pass through the second through hole and be fixed in the second through hole; and the holding portion 213 is provided with a slit opening toward the second welding leg of the part to hold the vertically arranged second pin 122 of the second welding leg 12 in the slit. In this way, the fixing and positioning of the second pin can be achieved in a simple manner, so as to achieve precise automatic welding at the expected welding position.

[0034] In the present utility model, preferably, the measurement system further includes a visual operation interface (not shown). The impedance measuring instrument is connected to the visual operation interface to notify the operator of the product process quality.

[0035] In the present utility model, the measurement system further includes a production execution system (not shown). The impedance measuring instrument is connected to the production execution system.

[0036] Through the above measurement system of the present utility model, the welding impedance can be automatically detected, so as to achieve the following technical effects: about 3 - 5 seconds required for manual measurement can be saved for each part, the labor intensity of employees is reduced, and the labor cost is saved; in addition, the measurement system can intelligently judge the quality of the measured parts after welding through the impedance range set by the impedance measuring instrument itself, so as to intelligently judge whether it is a good product. The production execution system counts the process yield of this process, and the equipment performs impedance measurement 100%, without omission; the intensity of manual operation is reduced, and there is no need for manual measurement and manual quality judgment.

[0037] Although the present invention has been described in detail above with reference to the preferred embodiments of the present invention, the present invention is not limited to the above specific embodiments. It should be understood that, without departing from the scope of the present invention, those skilled in the art can make various changes and various equivalents can replace many of the elements. Moreover, the combinations and collocations of the technical features, elements, and / or functions among the various aspects herein are clear and distinct. Therefore, based on the disclosed content, those skilled in the art can understand that the technical features, elements, and / or functions in the embodiments can be combined into another aspect as appropriate, unless otherwise described in the above content. In addition, according to the teachings of the present invention, many changes can be made without departing from the essence of the present invention to adapt to special circumstances or materials. Therefore, the present invention is not limited to the individual specific embodiments illustrated in the drawings and the specific embodiments described in the specification as the best mode currently contemplated for implementing the present invention, and the present invention is intended to include all embodiments falling within the scope of the above specification.

Claims

1. A measuring system for automatically measuring impedance after welding of parts, wherein each part (1) has a coil, a first welding leg (11) and a second welding leg (12), wherein both ends of the coil are respectively welded to the first welding leg via a first welding portion and welded to the second welding leg via a second welding portion, characterized in that: The measuring system comprises: at least one first metal probe (3), wherein a first end (31) of each first metal probe (3) is configured to be in electrical contact with a first welding foot (11) of each corresponding part, and a second end of each first metal probe is configured to be connected to a first measuring portion of a corresponding measuring channel of an impedance measuring instrument; and at least one second metal probe (4), wherein the first end (41) of each second metal probe (4) is configured to be in electrical contact with the second welding foot (12) of each corresponding part, and the second end of each second metal probe is configured to be connected to the second measuring portion of a corresponding measuring channel of the impedance measuring instrument, The measurement system is configured such that when the two ends of the coil of each part are respectively welded to the first welding part and the second welding part, a circuit loop consisting of the coil, the first welding part, the first welding foot, the first metal probe, the impedance meter, the second metal probe, the second welding foot and the second welding part is formed, so that the impedance meter can automatically measure the impedance of the circuit loop.

2. The measuring system according to claim 1, characterized in that The coil is a voice coil wire of a microphone.

3. The measuring system according to claim 1, characterized in that The first welding foot (11) comprises a first welding plate (111) arranged horizontally and a first pin (112) arranged vertically.

4. The measuring system according to claim 3, characterized in that The first welding piece (111) is in electrical contact with the first end (31) of each corresponding first metal probe (3), and the first end of each corresponding first metal probe is provided with a thickened portion to enhance the electrical connection with the first welding piece.

5. The measuring system according to any one of claims 1 to 4, characterized in that: The second welding foot (12) comprises a second welding piece (121) arranged horizontally and a second pin (122) arranged vertically.

6. The measuring system according to claim 5, characterized in that The second pin (122) is in electrical contact with the first end (41) of each corresponding second metal probe (4), and the first end (41) of the second metal probe (4) is provided with a claw portion which is in electrical contact with the second pin (122).

7. The measuring system according to claim 6, characterized in that The claw portion includes at least two claws circumferentially spaced apart from each other, wherein at least one claw is capable of electrically contacting the second pin.

8. The measuring system according to claim 5, characterized in that The measuring system further comprises a welding carrier (2) for carrying the parts (1), the welding carrier (2) having at least one carrying position (22) for carrying each part.

9. The measuring system according to claim 8, characterized in that The welding carrier (2) is provided with a fixing platform (21) made of insulating material near each carrying position (22), and the fixing platform is configured to include a flat portion (211), a protruding portion (212) protruding vertically upward from a portion of the flat portion to a first height, and a retaining portion (213) extending from a side surface of the flat portion.

10. The measuring system according to claim 9, characterized in that The flat portion (211) is provided with a first through hole extending toward a first welding foot of the part, and a corresponding first metal probe (3) can pass through the first through hole and be fixed in the first through hole; the protruding portion (212) is provided with a second through hole extending toward a second welding foot of the part, and a corresponding second metal probe (4) can pass through the second through hole and be fixed in the second through hole; and the retaining portion (213) is provided with a gap opening toward the second welding foot of the part so as to retain a vertically arranged second pin (122) of the second welding foot (12) in the gap.

11. The measuring system according to any one of claims 1 to 4, characterized in that: The measurement system further comprises a visual operation interface, and the impedance measuring instrument is connected to the visual operation interface.

12. The measuring system according to any one of claims 1 to 4, characterized in that: The measurement system further comprises a production execution system, to which the impedance measurement instrument is connected.

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