Coil performance testing machine

Abstract

The invention relates to the technical field of detection, in particular to a coil performance testing machine which comprises a frame assembly, a station bottom plate, a jig installation block, a probe assembly and an airtight assembly, a clamp base is fixedly installed on the jig installation block, L-shaped fixing plates are fixedly installed on the two sides of the clamp base, pneumatic clamps are fixedly installed on the upper sides of the L-shaped fixing plates, and the pneumatic clamps are fixedly installed on the station bottom plate. A flexible clamping plate is fixedly installed at the output end of the pneumatic clamp, and a coil is fixedly installed on the clamp base. According to the invention, the elastic supporting block is adaptive to the sizes of coils of different specifications, the pneumatic clamps on the two sides drive the flexible clamping plates to realize rapid clamping and fixing of the coils, and during testing, the probe assembly is in transmission connection with the probe to be in contact with the plastic-coated electrode in the groove, so that the finished product coil can be directly detected; for a non-finished coil, the positive electrode and the negative electrode of the coil can be connected through the binding post, and the standby electrode is started to complete the test, thereby effectively reducing the replacement frequency of the jig, being capable of quickly adapting to the test requirements of small batches and multiple varieties, and remarkably improving the production efficiency of the coil.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of detection, in particular to a coil performance testing machine. BACKGROUND

[0002] As a core component for realizing energy conversion, signal transmission and electromagnetic control, the coil is widely used in relays, motors, transformers and sensors of key electrical products in the fields of industrial automation control, new energy automobile power system, smart grid power transmission and distribution equipment and precision electronic instruments. The core performance parameters of the coil, such as direct current resistance, inductance, insulation strength and inter-turn short circuit state, directly reflect the electrical conductivity, magnetic field energy storage capacity, safety insulation level and structural integrity of the coil. Therefore, it is crucial to implement comprehensive and accurate performance parameter testing and quality screening on the coil during the production process to ensure the stability of the product in long-term operation.

[0003] The traditional coil performance testing method mainly relies on manual operation of bench instruments (such as LCR bridges, voltage withstand testers, insulation resistance testers, etc.) to complete parameter measurement. The testing process needs to go through multiple steps such as manual coil clamping, manual connection of test circuit, instrument parameter setting and data recording. Due to the differences in winding structure of coils of different models and sizes, matching special test fixtures must be replaced during testing. This process involves complex operations such as old fixture disassembly, new fixture mechanical installation, positioning reference calibration and electrical parameter debugging. The time consumption for single fixture replacement is usually 5-30 minutes. This testing mode relying on manual intervention not only has the problem of low operation efficiency, but also is difficult to meet the flexible production demand of "small batch, multi-variety and short delivery period" of modern manufacturing industry. Especially in the scene of frequent product model change, frequent fixture replacement will lead to long waiting time of production line downtime, which seriously restricts the production capacity improvement and production rhythm optimization.

[0004] Therefore, it is urgent to improve the coil performance testing machine to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a coil performance testing machine. The elastic support block adapts to the size of different specifications of coils. The flexible clamping plate on both sides is driven by pneumatic clamps to realize the rapid clamping and fixing of the coil. During testing, the probe assembly drives the contact probe to contact the plastic-coated electrode in the groove, which can directly detect the finished coil. For unfinished coils, the positive and negative electrodes of the coil can be connected through the terminal post, and the spare electrode can be used to complete the test, effectively reducing the fixture replacement frequency, quickly adapting to the testing demand of small batch and multi-variety, and significantly improving the coil production efficiency.

[0006] In order to achieve the above purpose, the main technical scheme adopted by the present application includes: The utility model provides a coil performance test machine, including frame assembly and the work station base fixedly arranged on frame assembly, the jig mounting block is fixedly installed on work station base, the front end of jig mounting block is fixedly installed with probe assembly, the rear end of jig mounting block is fixedly installed with air -tightness subassembly, the jig mounting block is fixedly installed with fixture base, both sides of fixture base are fixedly installed with L type fixed plate, the upside of L type fixed plate is fixedly installed with pneumatic clamp, the output of pneumatic clamp is fixedly installed with flexible clamp plate, the fixture base is fixedly installed with coil, the flexible clamp plate corresponds with coil, The inner bottom side of the fixture base is vertically slidably provided with an elastic support block, the upper end of the elastic support block is in contact with the bottom side of the coil, the jig mounting block is provided with a groove corresponding to the position of the probe assembly, one end of the coil is fixedly provided with a plastic-coated electrode corresponding to the probe assembly, the plastic-coated electrode corresponds to the groove, two groups of conduction probes are fixedly installed on the probe assembly, the conduction probes correspond to the plastic-coated electrode, an electrode guide groove is formed in the jig mounting block, a spare electrode is fixedly installed in the electrode guide groove, a terminal post is fixedly installed at the root of the spare electrode, and the positive and negative electrodes of the power supply of the coil are electrically connected to the terminal post through wires.

[0007] Preferably, the upper end of the work station base is fixedly installed with a plurality of work station partitions, and the jig mounting block is fixedly arranged between two of the work station partitions.

[0008] Preferably, the bottom side of the frame assembly is fixedly installed with an insulation withstand voltage tester, and the outer side of the insulation withstand voltage tester is fixedly installed with a protective plate.

[0009] Preferably, the upper side of the frame assembly is fixedly installed with a control panel assembly, the control panel assembly includes a control system and a human-computer interaction system, the control system includes a main control unit, a signal switching system, and a power supply system, the human-computer interaction system includes test process editing software, a human-computer interface, and a data management system, a reflective sensor is fixedly installed on the side of the jig mounting block, and the reflective sensor performs information processing and transmission through an I / O module.

[0010] Preferably, an alarm lamp is fixedly installed above the frame assembly, the alarm lamp is electrically connected to the control panel assembly through wires, two groups of conduction probes are connected in parallel to the positive and negative electrodes of the power supply system through wires, and the pneumatic clamp is electrically connected to the power supply system through wires.

[0011] Preferably, a feeding box is formed in the bottom side of the frame assembly, a storage box is placed in the feeding box, the storage box is used to place coils that fail to pass detection, and a pair of photoelectric sensors are fixedly arranged in the storage box.

[0012] Preferably, two heat dissipation fans are fixedly installed on one side of the frame assembly in an up-down distribution, and two ventilation windows are formed on the side of the frame assembly away from the heat dissipation fans.

[0013] Preferably, a probe mounting block is fixedly installed on the upper end of the probe assembly through bolts, and an installation groove corresponding to the lead-through probe is formed in the probe mounting block, and the lead-through probe is arranged in the installation groove.

[0014] Preferably, a seal limiting plate is fixedly installed on the output end of the limiting pneumatic cylinder, and the seal limiting plate extends to the upper side of the clamp base.

[0015] Preferably, a limit air cylinder is fixedly installed on one side of the airtight assembly, a seal limiting plate is fixedly installed on the output end of the limit air cylinder, the seal limiting plate extends to the upper side of the clamp base, a limiting plate sliding groove is fixedly installed on the corresponding position of the work station bottom plate, and the seal limiting plate is slidingly arranged in the limiting plate sliding groove.

[0016] The present application at least has the following beneficial effects: 1、The elastic supporting block of the present application can adapt to the size of coils of different specifications, the flexible clamping plate is driven by the pneumatic clamp on both sides to realize the quick clamping and fixing of the coil, during testing, the lead-through probe of the probe assembly is in contact with the plastic-coated electrode in the groove, and the finished coil can be directly detected; for non-finished coils, the positive and negative electrodes of the coil can be connected through the connecting post and the standby electrode is enabled to complete the test, thereby effectively reducing the frequency of changing the jig, quickly adapting to the testing demand of small batch and multiple varieties, and significantly improving the coil production efficiency.

[0017] 2、The present application can store test data to a database, generate SPC statistical charts, support data traceability and report export, and the reflective sensor installed on the side of the jig mounting block serves as a position detection element, cooperates with an I / O module to process digital signals, and realizes real-time monitoring of the presence or absence and positioning state of the coil. The two lead-through probes of the present application are connected in parallel to the positive and negative poles of the power supply system through wires, forming a detection loop, when the probe is in poor contact with the coil electrode, abnormal loop current will trigger the alarm light to flash; the pneumatic clamp is connected to the power supply system through independent wires to form a driving loop, ensuring that the clamping action is not affected by the detection circuit, which can check whether the circuit is open or closed and drive the loop to ensure that the flexible clamping plate is clamped tightly, and once the coil power supply is not connected properly, the alarm light will light up to remind the operator, which does not affect the normal work of the clamp and can find the installation problem at the first time. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 The overall elevation view provided for this invention; Figure 2 The structural diagram of the workstation base plate provided by this invention; Figure 3 Provided by the present invention Figure 2 Top view diagram; Figure 4 Provided by the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the probe assembly provided by the present invention; Figure 6 This is an exploded schematic diagram of the coil and pneumatic clamp provided by the present invention; Figure 7 This is a cross-sectional schematic diagram provided for the present invention; Figure 8 This is a schematic diagram of the system J structure provided by the present invention.

[0019] In the diagram, 1. Frame assembly; 2. Station base plate; 3. Fixture mounting block; 301. Groove; 302. Electrode guide groove; 303. Spare electrode; 304. Terminal block; 4. Probe assembly; 401. Conductive probe; 402. Probe mounting block; 403. Mounting groove; 5. Airtight assembly; 6. Fixture base; 601. Elastic support block; 7. L-shaped fixing plate; 8. Pneumatic fixture; 9. Flexible clamping plate; 10. Coil; 11. 12. Plastic-coated electrode; 13. Workstation partition; 14. Insulation withstand voltage tester; 15. Protective plate; 16. Control panel assembly; 17. Reflection sensor; 18. Alarm light; 19. Feeding box; 10. Storage box; 11. Through-beam sensor; 12. Cooling fan; 13. Ventilation window; 14. Stamp drive assembly; 15. Stainless steel stamp; 26. Limit cylinder; 27. Sealing limit plate; 28. Limit plate groove. Detailed Implementation

[0020] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0021] like Figures 1-8As shown, the coil performance testing machine provided in this embodiment includes a frame assembly 1 and a workstation base plate 2 fixedly mounted on the frame assembly 1. The frame assembly 1 serves as the basic structure of the equipment, providing overall rigid support and bearing various functional modules. The workstation base plate 2 is used to realize the mechanical connection between the fixture system and the frame, ensuring the stability of the testing platform. A fixture mounting block 3 is fixedly mounted on the workstation base plate 2, which serves as the core functional carrier integrating probes, fixtures, and electrode systems. A probe assembly 4 is fixedly mounted at the front end, responsible for contact detection of coil electrical parameters. An airtight assembly 5 is fixedly mounted at the rear end, providing sealed protection for the testing environment and pneumatic driving power. A fixture base 6 is fixedly mounted on the fixture mounting block 3. Pneumatic clamps 8 are mounted on both sides of the base via L-shaped fixing plates 7. The flexible clamping plate 9 at the drive output end of the clamps achieves adaptive clamping of the coil 10, avoiding damage to the coil surface through flexible contact. An elastic support block 601 on the inner bottom side of the fixture base 6 compensates for height differences between different coils 10 through vertical sliding, ensuring a uniform positioning reference for the coils 10. A groove 301 is provided on the fixture mounting block 3 corresponding to the probe assembly 4, forming a guiding fit with the plastic-coated electrode 11 at the end of the coil 10. Two sets of conductive electrodes on the probe assembly 4 are connected. The probe 401 can accurately contact the plastic-coated electrode 11 to achieve electrical connection. For the testing needs of non-finished coils, the fixture mounting block 3 has a spare electrode 303 built in through the electrode guide groove 302. The terminal 304 at its root can be directly connected to the positive and negative poles of the coil 10, forming a dual-mode test interface that is compatible with the testing of coils 10 at different production stages. The probe assembly 4 has a probe mounting block 402 fixedly mounted on its upper end by bolts. The probe mounting block 402 has a mounting groove 403 corresponding to the conductive probe 401. The conductive probe 401 is set inside the mounting groove 403. The upper end of the workstation base plate 2 is fixedly equipped with three workstation partitions 12, and the fixture mounting block 3 is fixedly set between two adjacent workstation partitions 12. The two workstations can be tested simultaneously. The elastic support block 601 adapts to the size of coils of different specifications. The pneumatic clamps 8 on both sides drive the flexible clamping plate 9 to quickly clamp and fix the coil 10. During testing, the probe assembly 4 drives the probe 401 to contact the plastic-coated electrode 11 in the groove 301, which can directly test the finished coil 10. For non-finished coils 10, the positive and negative terminals of the coil 10 can be connected through the terminal block 304 and the spare electrode 303 can be used to complete the test. This effectively reduces the frequency of fixture replacement, can quickly adapt to the testing needs of small batches and multiple varieties, and significantly improves the production efficiency of coils 10. At the same time, such as Figures 1-8As shown, an insulation withstand voltage tester 13 is fixedly installed on the bottom side of the frame assembly 1, and a protective plate 131 is added to its outer side to ensure the safety of high-voltage testing. The upper side of the frame assembly 1 integrates a control panel assembly 14, which serves as the "nerve center" and "brain" of the equipment. This assembly includes an electrical measurement and control system and a software human-machine interaction system, which is responsible for executing specific test tasks and intelligent operation. The core of the electrical measurement and control system includes a main control unit, which adopts a high-performance PLC, runs the test software, and coordinates the work of each subsystem. The measuring instrument module integrates an LCR measuring instrument / impedance analyzer, an insulation withstand voltage tester 13, an insulation resistance tester, an inter-turn insulation tester, and a DC resistance tester. The signal switching system realizes the rapid switching between the measuring instrument and the coil terminal through a relay matrix or solid-state switch, which determines the test efficiency and degree of automation. The power supply system is equipped with a switching power supply, a linear power supply, and a noise filter to provide stable power to the control module, sensors, pneumatic components, and the coil under test. The software and human-machine interaction system, as the "soul" of the equipment, includes test process editing software, industrial touch screen human-machine interface and data management system. It can store test data to the database, generate SPC statistical charts, support data traceability and report export. The reflection sensor 141 mounted on the side of the fixture mounting block 3 serves as a position detection element. It works with the I / O module to process digital signals and realize real-time monitoring of the presence and positioning status of the coil. To intuitively monitor the power connection status of the non-finished coil 10 and promptly detect installation problems, the equipment is designed with a visual alarm and intelligent detection circuit system: like Figures 1-8 As shown, a three-color alarm light 15 is installed on the top of the frame component 1. This alarm light is electrically connected to the main control unit of the control panel component 14 via a wire, and can provide real-time feedback on the power connection status. The circuit connection adopts a dual-loop design: two sets of conduction probes 401 are connected in parallel to the positive and negative terminals of the power system via wires to form a detection loop. When the probes have poor contact with the coil electrodes, the abnormal loop current will trigger the alarm light 15 to flash. The pneumatic clamp 8 is connected to the power system via an independent wire to form a drive loop, ensuring that the clamping action is not affected by the detection circuit. It can check whether the circuit is continuous and ensure that the flexible clamp 9 is clamped tightly through the drive loop. Once the coil power is not properly connected, the alarm light 15 will light up to remind the operator, which will not affect the normal operation of the clamp and can detect the installation problem at the first time.

[0022] Furthermore, such as Figure 7As shown, a feeding box 16 is provided on the bottom side of the frame assembly 1 as a fast processing channel for defective products. Inside the box is a pull-out storage box 161, which is specifically used to classify and store the coils 10 that fail the test. The storage box 161 integrates a through-beam sensor 162, which can monitor the material height inside the box in real time. When the preset capacity is reached, an alarm is automatically triggered to prevent overflow. Two cooling fans 17 are installed on one side of the frame assembly 1, and two ventilation windows 18 are opened on the other side to form a forced convection cooling system. The cooling fans 17 actively draw in external cold air, which flows through the electrical component area and then exhausts hot air through the ventilation windows 18, effectively controlling the internal temperature of the equipment and ensuring the stability and service life of the precision measuring instrument. At the same time, such as Figure 2 and Figure 3 As shown, a stamp driving assembly 19 is fixedly installed on the side of the fixture mounting block 3 away from the reflection sensor 141. As a product marking execution unit, it marks the surface of the qualified coil 10 by pneumatically or electrically driving the stainless steel stamp 191 at the output end, realizing product quality traceability. A limit cylinder 20 is integrated on one side of the airtight assembly 5. It drives the sealing limit plate 201 to slide laterally along the limit plate slide groove 202 on the station base plate 2. When the sealing limit plate 201 extends to the upper side of the fixture base 6, it can cooperate with the airtight assembly 5 to form a closed test chamber, while limiting the displacement of the coil during the air pressure test, ensuring the accuracy of the airtightness test data.

[0023] like Figures 1-8 As shown in the figure, the principle of the coil performance testing machine provided in this embodiment is as follows: In use, two workstations can be tested simultaneously. The elastic support block 601 adapts to the size of coils of different specifications. The pneumatic clamps 8 on both sides drive the flexible clamping plate 9 to quickly clamp and fix the coil 10. During testing, the probe assembly 4 drives the probe 401 to contact the plastic-coated electrode 11 in the groove 301, which can directly test the finished coil 10. For non-finished coils 10, the positive and negative terminals of the coil 10 can be connected through the terminal block 304 and the spare electrode 303 can be used to complete the test. When the probe and the coil electrode have poor contact, the abnormal circuit current will trigger the alarm light 15 to flash. The pneumatic clamp 8 is connected to the power system through an independent wire to form a drive circuit, ensuring that the clamping action is not affected by the detection circuit. Once the coil power supply is not properly connected, the alarm light 15 will light up to remind the operator and can detect the installation problem at the first time.

[0024] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0025] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0026] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A coil performance tester comprising a frame assembly (1) and a station bedplate (2) fixedly arranged on the frame assembly (1), characterized in that: The work position bottom plate (2) is fixedly installed with a jig mounting block (3), the front end of the jig mounting block (3) is fixedly installed with a probe assembly (4), the rear end of the jig mounting block (3) is fixedly installed with an airtight assembly (5), the jig mounting block (3) is fixedly installed with a clamp base (6), the two sides of the clamp base (6) are fixedly installed with L-shaped fixed plates (7), the upper side of the L-shaped fixed plate (7) is fixedly installed with a pneumatic clamp (8), the output end of the pneumatic clamp (8) is fixedly installed with a flexible clamp plate (9), the clamp base (6) is fixedly installed with a coil (10), the flexible clamp plate (9) corresponds to the coil (10); The inner bottom side of the clamp base (6) is vertically slidably provided with an elastic supporting block (601), the upper end of the elastic supporting block (601) is in contact with the bottom side of the coil (10), the jig mounting block (3) is provided with a groove (301) corresponding to the position of the probe assembly (4), one end of the coil (10) is fixedly provided with a plastic-coated electrode (11) corresponding to the probe assembly (4), the plastic-coated electrode (11) corresponds to the groove (301), the probe assembly (4) is fixedly installed with two groups of conductive probes (401), the conductive probes (401) correspond to the plastic-coated electrode (11), the jig mounting block (3) is provided with an electrode guide groove (302), the inside of the electrode guide groove (302) is fixedly installed with a spare electrode (303), the root of the spare electrode (303) is fixedly installed with a terminal post (304), the positive and negative electrodes of the power supply of the coil (10) are electrically connected with the terminal post (304) through wires.

2. The coil performance tester of claim 1, wherein: The upper end of the work position bottom plate (2) is fixedly installed with a plurality of work position partition plates (12), the jig mounting block (3) is fixedly arranged between two work position partition plates (12).

3. The coil performance tester of claim 1, wherein: The bottom side of the frame assembly (1) is fixedly installed with an insulation withstand voltage tester (13), and the outer side of the insulation withstand voltage tester (13) is fixedly installed with a protective plate (131).

4. The coil performance tester of claim 1, wherein: The upper side of the frame assembly (1) is fixedly installed with a control panel assembly (14), the control panel assembly (14) comprises a control system and a man-machine interaction system, the control system comprises a main control unit, a signal switching system and a power supply system, the man-machine interaction system comprises test process editing software, a man-machine interface and a data management system, the side of the jig mounting block (3) is fixedly installed with a reflective sensor (141), and the reflective sensor (141) processes and transmits information through an I / O module.

5. A coil performance tester according to claim 4, wherein: The upper side of the frame assembly (1) is fixedly installed with an alarm lamp (15), the alarm lamp (15) is electrically connected with the control panel assembly (14) through wires, and the two groups of conductive probes (401) are connected in parallel on the positive and negative electrodes of the power supply system through wires, and the pneumatic clamp (8) is electrically connected with the power supply system through wires.

6. The coil performance tester of claim 1, wherein: The bottom side of the frame assembly (1) is provided with a feeding box (16), the inside of the feeding box (16) is placed with a storage box (161), the storage box (161) is used for placing the detection unqualified coil (10), the inside of the storage box (161) is fixedly provided with a pair of photoelectric sensors (162).

7. The coil performance tester of claim 1, wherein: The frame assembly (1) is fixedly installed with two heat dissipation fans (17) distributed above and below on one side, the frame assembly (1) is provided with two ventilation windows (18) away from the heat dissipation fan (17) on one side, and the heat dissipation fan (17) corresponds to the ventilation window (18).

8. The coil performance tester of claim 1, wherein: The probe assembly (4) is fixedly installed with a probe mounting block (402) on the upper end through bolts, the probe mounting block (402) is provided with a mounting groove (403) corresponding to the lead-through probe (401), and the lead-through probe (401) is arranged in the mounting groove (403).

9. The coil performance tester of claim 5, wherein: The jig mounting block (3) is fixedly installed with a seal driving assembly (19) away from the reflection sensor (141) on one side, the output end of the seal driving assembly (19) is fixedly connected with a stainless steel seal (191), and the stainless steel seal (191) corresponds to the coil (10).

10. The coil performance tester of claim 1, wherein: The air-tight assembly (5) is fixedly installed with a limiting air cylinder (20) on one side, the output end of the limiting air cylinder (20) is fixedly installed with a sealing limiting plate (201), the sealing limiting plate (201) extends to the upper side of the clamp base (6), the work station bottom plate (2) is fixedly installed with a limiting plate sliding groove (202) at the corresponding position, and the sealing limiting plate (201) is slidably arranged in the limiting plate sliding groove (202).

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