Multifunctional test equipment and test process for testing electromagnetic switching device

Abstract

The invention relates to the technical field of test equipment of electromagnetic switching devices, in particular to multifunctional test equipment and a test process for testing an electromagnetic switching device. The testing equipment sequentially comprises a feeding channel, an automatic code scanning tool, an insulation and voltage resistance testing tool, an air tightness testing tool, an electric cleaning tool, a resistance testing tool, a comprehensive parameter testing tool, a mechanical aging testing tool and a discharging channel. Performance data and process data of the product can be obtained through one device, the working efficiency is improved, and the obtained data is more comprehensive. The loading tool can simultaneously bear a plurality of workpieces for testing, so that the testing efficiency is improved. The servo equidistant sliding table synchronous variable pitch module on the resistance test tool flexibly adjusts the distance between the upper probes, and ensures that the upper probes can adapt to and be compatible with to-be-tested products of different models. And the test process is adjusted, so that the method is more scientific.

Description

Technical Field

[0001] The present application relates to the technical field of electromagnetic switch electrical appliance detection, and specifically to a multifunctional testing device and a testing process for testing electromagnetic switch electrical appliances. Background Art

[0002] Electromagnetic switching devices, as the name implies, are switching devices that use electromagnets for control, that is, a combination of electromagnets and switches. This type of device includes contactors and relays. In the process of producing electromagnetic switching devices, multiple performance tests must be performed to ensure their reliability. The main test items include: insulation resistance test, withstand voltage test, coil resistance test, pull-in voltage test, release voltage test, pull-in time test, and release time test.

[0003] The first generation product of the applicant, a Chinese patent with publication number CN114428210A, discloses an efficient DC contactor comprehensive test equipment, which includes a test platform, a turntable rotated on the test platform and at least two groups of test fixtures. Each test fixture is arranged in sequence around the rotation direction of the turntable; the test fixture includes a base, a contact block and a transfer block, the base is arranged on the turntable, the contactor is arranged on the base and its static contact faces upward; a column is arranged on the base, the contact block slides up and down along the column, the first elastic member resets the contact block, the transfer block is arranged above the contact block and is driven by the first driving mechanism to move downward toward the contact block or upward away from the contact block; the contact block is provided with a first contact, a second contact, a third contact and a first probe group, the second contact is electrically connected to the first probe group, the first probe group is arranged opposite to the static contact, the third contact is electrically connected to the coil of the contactor through the first transfer clamp, and the transfer block is provided with a main probe group opposite to the first contact, a second probe group opposite to the second contact and a third probe group opposite to the third contact. Every time the turntable of this patent pauses at a station, the loading and unloading station, code scanning station, insulation and voltage withstand test station, coil resistance test station, contact resistance test station and comprehensive test station operate simultaneously. The insulation and voltage withstand test station, coil resistance test station, contact resistance test station and comprehensive test station test four contactors at the same time, thereby improving the test efficiency.

[0004] The problems faced by the above technologies are: 1. The test equipment described in the patent can only test one contactor at each testing station, and is limited to testing the same type of contactors. If different types of contactors need to be tested, the distance of the main probe group must be manually adjusted.

[0005] 2. The test equipment described in the patent is limited to collecting product performance data, and no special process treatment is performed on the product before testing. If it is necessary to add process treatments such as air tightness testing, electrical cleaning and mechanical aging, and collect process data, designing an efficient testing process becomes a new challenge that needs to be solved urgently. Summary of the invention

[0006] The purpose of the present application is to provide a multifunctional testing device and a testing process for testing electromagnetic switching electrical appliances, so as to solve the problems existing in the prior art.

[0007] In order to solve the above-mentioned technical problems, the present application provides the following technical solutions: a multifunctional testing device for testing electromagnetic switching electrical appliances, comprising an equipment platform, on which a rotary conveying module is configured, and a plurality of loading fixtures are provided on the rotary conveying module. A testing fixture is arranged next to the rotary conveying module, and each of the loading fixtures is provided with more than one product, and each of the testing fixtures is suitable for testing more than one product at the same time.

[0008] Through the above technical solution, the loading fixture can carry multiple products and transport them to the corresponding test fixture through the rotary conveyor module, so that the test fixture can perform performance tests on multiple products at the same time. For example, insulation resistance tests can be performed on four products at the same time. This detection method significantly improves work efficiency.

[0009] Furthermore, the loading tooling includes a turntable moving plate, a workpiece pallet, and a plurality of transfer units. The workpiece pallet is fixed on one side above the turntable moving plate, and a plurality of transfer units are fixed on the other side above the turntable. A plurality of products are fixed on the workpiece pallet, and the positions and quantities of the transfer units correspond to the positions and quantities of the products.

[0010] With the above technical solution, the rotary line moving plate is used to connect with the rotary assembly so that it can move with it; the workpiece pallet is used to install and carry the product, which can be placed directly or fastened by a bolt. The pins of the product will pass through the adapter unit and be fixed by the adapter unit. For example, the products can be placed side by side on one side of the workpiece pallet, and four adapter units are set on the other side of the workpiece pallet to dock with the pins of each product. This design enables a single workpiece pallet to carry multiple products while keeping the line neat and tidy, effectively avoiding the situation of test data errors.

[0011] Furthermore, the adapter unit includes an adapter base and a fixed module, the adapter base is fixed on the turntable movable plate, and the fixed module is arranged on the adapter base; the fixed module at least includes a fixed block, the fixed block is provided with a threaded hole one, the wall surface of the adapter base facing the threaded hole one is provided with a through hole two, and each of the fixed blocks is provided with a fixing column; the adapter base is provided with a plurality of horizontally arranged through grooves, and the through grooves are perpendicular to the through hole two; a slot for the fixing column is provided in the through groove; the fixing column is suitable for passing through the threaded hole one and the through hole two, and the end of the fixing column is suitable for being inserted into the slot.

[0012] Through the above technical solution, the pins of the product to be tested can be manually inserted into the through slots, and then pressed by the fixing column above to ensure that the pins are firmly positioned, which is convenient for the test fixture to test. This not only improves the accuracy and efficiency of the test. In addition, even for different models of products, the adapter unit can ensure that the detection position of the lower pin remains consistent. When testing different types of products at the same time, it shows excellent versatility.

[0013] Furthermore, the test tooling is applied as a variety of insulation and voltage resistance test tooling, air tightness test tooling, resistance test tooling, comprehensive parameter test tooling or mechanical aging test tooling; it is suitable for arranging a loading channel, an automatic code scanning tooling, an insulation and voltage resistance test tooling, an air tightness test tooling, an electric cleaning tooling, a resistance test tooling, a comprehensive parameter test tooling, a mechanical aging test tooling and a unloading channel in sequence along the direction of the rotary conveying module on the equipment platform.

[0014] Through the above technical solutions, the test fixtures can be diversified. The above provides a multifunctional test equipment that can perform a variety of test items including insulation withstand voltage, air tightness, resistance, comprehensive parameters, mechanical aging, etc. Through these test fixtures, performance data and process data can be obtained, and one device can meet all test needs. In addition, each test fixture is designed as a multi-station test fixture, so that one fixture can test multiple electromagnetic switching electrical appliances at the same time. The comprehensiveness of the detection process and the doubling of the number of tests have significantly improved the efficiency of the tooling.

[0015] Furthermore, the resistance testing tooling includes a tooling base arranged perpendicular to the rotating assembly, a servo variable distance mechanism and an upper probe module are arranged above the tooling base, and a lower probe module is arranged below the tooling base; a plurality of groups of upper probe modules are arranged on the servo variable distance mechanism, and the servo variable distance mechanism is suitable for driving a plurality of groups of upper probe modules to move and forming the same or different sizes of spacing between the upper probe modules.

[0016] Through the above technical solution, the lower part of the probe module contacts the lower pin of the product to keep the circuit normal, while the upper probe module contacts the top center detection area of ​​the product to perform performance detection.

[0017] Since different types of relays or contactors have their own width dimensions, the spacing between the top center detection areas of adjacent relays or contactors will also be different. Therefore, the upper probe module with adjusted spacing can adapt to the needs of the top center detection area of ​​various types of relays or contactors. Usually, the four relays on the same workpiece pallet are of the same type, which is convenient for data detection and statistical analysis. When it is necessary to test another batch of relays of different types, the servo variable pitch mechanism can be used to adjust the spacing of the upper probe module.

[0018] Further, the servo pitch-changing mechanism includes a vertical lifting module and a horizontal moving module. The vertical lifting module is arranged on the tooling base, the horizontal moving module is arranged above the vertical lifting module, and the upper probe module is arranged on the horizontal moving module.

[0019] Through the above technical solution, the vertical lifting module is designed to adjust the height to meet the height requirements of different products and ensure that the upper probe module accurately contacts the middle detection area. After the height calibration is completed, the next step is to calibrate the distance of the upper probe module of the horizontal moving module. If there is any error, intelligent fine-tuning is performed. In addition, the position data of the same type of products can be stored and memorized.

[0020] Further, the horizontal moving module includes a horizontal moving module base, a servo equidistant slide table synchronous pitch-changing module, and an upper probe module. The servo equidistant slide table synchronous pitch-changing module is installed on the horizontal moving module base. The servo equidistant slide table synchronous pitch-changing module includes a plurality of sliders. The upper probe module includes a plurality of upper probe mounting seats and a plurality of groups of upper probes. The upper probe mounting seats are arranged on the respective sliders of the servo equidistant slide table synchronous pitch-changing module, and a group of upper probes is provided on each upper probe mounting seat; the servo equidistant slide table synchronous pitch-changing module is adapted to drive the plurality of groups of upper probes to synchronously adjust the distance; the upper probes face the top of the product, and the lower probes of the lower probe module face the pins at the bottom of the product.

[0021] Through the above technical solution, the servo equidistant slide table synchronous pitch-changing module can achieve a high-precision numerical control pitch-changing function; the design of the slider and the upper probe mounting seat ensures the stable installation of the upper probe and has a follow-up characteristic. This structure is both simple and convenient for maintenance.

[0022] Further, the airtightness test tooling includes a support mounting plate. On one side of the support mounting plate facing the rotary conveying module, there are an electrode lifting module and a lower probe module; the electrode lifting module includes a lifting module and an electrode mounting group. The electrode mounting group is arranged on the lifting module. The electrode mounting group includes a fixing plate and an electrode mounting block. A plurality of fixing grooves are provided on the fixing plate, and the electrode mounting block is installed in the fixing groove. Two electrode columns are provided on each electrode mounting block, and a metal spring is sleeved on each electrode column.

[0023] Through the above technical solutions, the electrode lifting module can accurately detect various performances of the product. The lower probe module ensures unobstructed circuits of the product. On a fixed plate, multiple electrode mounting blocks are equipped to synchronously test multiple products. In addition, when it is necessary to replace different types of products, the lifting module can automatically adjust the height to ensure that the electrode columns can reasonably contact the products. The design of the metal spring is used to protect the electrode columns, and it has the characteristic of timely rebound, effectively avoiding the damage to the electrode columns that may be caused by rigid contact.

[0024] Based on the above technical problems, the present application also provides a second technical solution: a test process for testing electromagnetic switch appliances, using the described test equipment, including product performance test processes: insulation withstand voltage test, airtightness test, resistance test, and comprehensive parameter test; and process test processes: electrical cleaning, mechanical aging test; The overall test process is as follows: First, place the product into the feeding channel of the test equipment, start the automatic barcode scanning tooling of the equipment and perform automatic barcode scanning. If the barcode scanning fails, the product needs to be re-placed; after successful barcode scanning, continue to the next process; Next, the insulation withstand voltage test tooling performs an insulation withstand voltage test on the product. If the test is unqualified, record or send an alarm signal; if it is qualified, enter the next process; Then, the airtightness test tooling conducts an airtightness test. If it is unqualified, record or alarm in the same way, and if it is qualified, continue; After that, the electrical cleaning tooling conducts electrical cleaning on the product; After electrical cleaning, the resistance test tooling conducts a resistance test on the product. If it is unqualified, record or alarm, and if it is qualified, enter the next process; The comprehensive parameter test tooling then conducts a comprehensive parameter test. If it is unqualified, record or alarm, and if it is qualified, continue; Finally, the mechanical aging test tooling performs a mechanical aging test on the product and records relevant data, and then enters the next process; Judge the test results. Unqualified products will be recorded or alarmed and enter the defective product discharging channel of the discharging channel; if the test is qualified, the qualified products will enter the good product discharging channel of the discharging channel.

[0025] Through the above technical solutions, the product testing process has been optimized and adjusted. The original testing sequence: insulation withstand voltage test - resistance test - comprehensive parameter test has been changed to: insulation withstand voltage test - airtightness test - electric cleaning - resistance test - comprehensive parameter test - mechanical aging test. Adding the airtightness test before the electric cleaning process can more accurately evaluate the sealing performance of the product cavity and reduce the interference of pressure changes during subsequent cleaning on the test results. Placing the electric cleaning step after the resistance test helps to remove the oxide layer on the product surface, thereby obtaining more accurate contact resistance data. Arranging the mechanical aging test at the end of the process reduces its potential impact on the results of the resistance test and comprehensive parameter test.

[0026] Compared with the prior art, the beneficial effects achieved by this application are as follows: 1. This application uses a loading tooling and a testing tooling, which can carry multiple products simultaneously for performance testing. Compared with the past, it originally took 50 seconds to test 1 product, but now it can complete the testing of 4 products in about 40 seconds, significantly improving the testing efficiency of online production and achieving a 4-fold time saving.

[0027] 2. This application can adjust the distance between the upper probes through the servo equidistant sliding table synchronous variable pitch module on the testing tooling, enabling the upper probes to adapt to and be compatible with different models of electromagnetic switch appliances in contact, so as to meet various testing requirements.

[0028] 3. The testing tooling of this application has wide applicability and can be applied to various functional testing projects; compared with the previous multi-functional testing process that required four personnel to supervise, this application only requires one person for mobile monitoring and loading operations, thus significantly reducing the personnel cost.

[0029] 4. This application has added an airtightness testing tooling and testing process. Given that the cavity of the electromagnetic switch appliance must be sealed and any leakage will cause a decline in product performance, the airtightness testing tooling and process can detect the airtightness of the product, ensure product quality, and thus stabilize product quality.

[0030] 5. Based on the original insulation withstand voltage test, electric cleaning, resistance test, and comprehensive parameter test, this application has added an airtightness test and a mechanical aging test. Through one device, the performance data and process data of the product can be obtained, which not only improves work efficiency but also obtains more comprehensive data.

[0031] 6. The test process of the product in this application has been optimized and adjusted. The original test sequence: insulation withstand voltage test - resistance test - comprehensive parameter test has been changed to: insulation withstand voltage test - airtightness test - electric cleaning - resistance test - comprehensive parameter test - mechanical aging test. By adding an airtightness test before the electric cleaning process, the sealing performance of the product cavity can be evaluated more accurately, and the interference of pressure changes during subsequent cleaning on test results can be reduced. In addition, placing the electric cleaning step after the resistance test helps to remove the oxide layer on the product surface, thereby obtaining more accurate contact resistance data. Finally, arranging the mechanical aging test at the end of the process can reduce its potential impact on the results of the resistance test and comprehensive parameter test. Description of the Drawings

[0032] The drawings are used to provide further understanding of this application, and constitute a part of the specification. Together with the embodiments of this application, they are used to explain this application, and do not constitute a limitation to this application. In the drawings: Figure 1 is the overall structure diagram of the test equipment; Figure 2 is the top view of the test equipment; Figure 3 is the structural schematic diagram of the loading tooling; Figure 4 is the three-dimensional Figure 1 ; Figure 5 is the three-dimensional Figure 2 ; Figure 6 is the three-dimensional Figure 3 display; Figure 7 is the structural schematic diagram of the airtightness test tooling; Figure 8 is the structural schematic diagram of the electrode installation group; Figure 9 is the flow chart of the test process.

[0033] Among them, 1. Equipment platform; 2. Rotary conveying module; 21. Rotary line; 3. Loading tooling; 31. Rotary line moving plate; 32. Workpiece pallet; 33. Transfer unit; 331. Transfer base; 3311. Through slot; 3312. Slot; 332. Fixed module; 333. Fixed block; 3331. Vertical block; 3332. Horizontal block; 334. Fixed column; 335. Press plate; 34. Rotary line fixed block; 35. Loading tray precision positioning part; 36. Roller; 4. Feeding channel; 5. Automatic code scanning tooling; 6. Insulation withstand voltage test tooling; 7. Resistance test tooling; 71. Servo variable pitch mechanism; 711. Vertical lifting module; 712. Horizontal moving module; 713. Horizontal moving Moving module base; 714, servo equidistant slide synchronous variable pitch module; 72, upper probe module; 721, upper probe mounting seat; 722, upper probe; 73, lower probe module; 74, tooling base; 8, airtightness test tooling; 81, support mounting plate; 82, electrode lifting module; 821, lifting module; 822, electrode mounting group; 8221, fixing plate; 8222, electrode mounting block; 8223, electrode column; 8224, metal spring; 8225, inner sleeve; 9, electric cleaning tooling; 10, comprehensive parameter test tooling; 11, mechanical aging test tooling; 12, unloading channel; 121, good product unloading channel; 122, defective product unloading channel; 13, workpiece. DETAILED DESCRIPTION

[0034] The following will be combined with the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] Example like Figure 1-2 As shown, this embodiment discloses a test device for testing electromagnetic switch electrical appliances, which includes an equipment platform 1. On the equipment platform 1, a rotary conveying module 2 and a loading tool 3 are installed in sequence. Along the direction of the rotary conveying module 2, the equipment platform 1 is provided with a loading channel 4, an automatic code scanning tool 5, an insulation withstand voltage test tool 6, an air tightness test tool 8, an electric cleaning tool 9, a resistance test tool 7, a comprehensive parameter test tool 10, a mechanical aging test tool 11 and a unloading channel 12 in sequence.

[0036] The outside of the equipment is equipped with a dustproof frame, and the internal equipment platform 1 is composed of marble and metal frames to ensure stable support. The rotary conveyor module 2 is driven by a motor and includes components such as main and auxiliary gears, long sprockets and ring guides. It has a strong conveying capacity and can achieve smooth and stable operation. The loading channel 4 is composed of a group of tray assemblies, which can carry multiple products at the same time and can rotate synchronously with the rotary conveyor module 2. The loading method is flexible and supports manual loading or automatic loading by a robot. The unloading channel 12 connects two sets of conveyor belts, which serve as a good product unloading channel 121 and a defective product unloading channel 122 respectively. The unloading method is also flexible, and manual unloading or automatic sorting unloading can be selected. In addition, the equipment platform 1 reserves space to temporarily store products that have not been inspected when the equipment fails and needs temporary maintenance.

[0037] like Figure 3 As shown, each loading fixture 3 is equipped with one or more products, and each test fixture can test one or more products at the same time. In this embodiment, the product refers to a high-voltage relay. However, it is not limited and can be other electromagnetic switching electrical appliances, such as relays.

[0038] The loading fixture 3 is composed of a rotary line moving plate 31 , a workpiece pallet 32 ​​, a plurality of transfer units 33 , a rotary line fixing block 34 , a carrier plate precision positioning member 35 , and a plurality of rollers 36 .

[0039] A workpiece pallet 32 ​​is fixed on one side of the rotary line moving plate 31, and a plurality of transfer units 33 are fixed on the other side. A plurality of products are fixed in a queue on the workpiece pallet 32. The position and number of the transfer units 33 correspond to the position and number of the queue of the products.

[0040] The transfer unit 33 is composed of a transfer base 331 and a fixed module 332: the transfer base 331 is fixed on the rotary line moving plate 31, and the fixed module 332 is installed above the transfer base 331. The fixed module 332 is composed of a fixed block 333, a fixed column 334 and a pressing plate 335: the fixed block 333 includes a vertical vertical block 3331 and a horizontal horizontal block 3332. On the vertical block 3331 of the fixed block 333, a pressing plate 335 and a spring not shown in the figure are installed. A threaded hole is provided on the horizontal block 3332, and a through hole 2 corresponding to the threaded hole is provided on the corresponding wall surface of the transfer base 331. The fixed column 334 is designed to be able to pass through the threaded hole and the through hole 2. The pressing plate 335 is directly opposite to the top of the fixed column 334. A plurality of horizontal through slots 3311 are provided inside the adapter base 331, and these through slots 3311 are perpendicular to the second through hole; a slot 3312 for a fixing column 334 is provided inside the through slot 3311, and the end of the fixing column 334 is inserted into the slot 3312 so as to be firmly fixed after the pin of the high-voltage relay is reversed.

[0041] In this embodiment, four product installation positions are provided, corresponding to four adapter bases 331 and fixing modules 332. Each adapter base 331 is provided with four through slots 3311 and slots 3312. Each fixing module 332 is provided with four fixing blocks 333, four fixing columns 334, and four pressing plates 335. The positions of the fixing columns 334, the first threaded holes, the second through holes, and the slots 3312 correspond to each other and are located on the same vertical central axis, so that the fixing columns 334 can accurately guide the slots 3312.

[0042] As Figure 4 shown, a rotary line fixing block 34 is installed below the rotary line moving plate 31. One side of the rotary line fixing block 34 is fixedly connected to the rotary line 21 of the rotary assembly, and the other side is connected to the carrier plate precise positioning member 35. The carrier plate precise positioning member 35 is located on the side of the rotary line fixing block 34 facing the test tooling. This positioning member is a commercially purchased product, and its function is to ensure that the rotary line moving plate 31 can accurately rotate to the required position.

[0043] Rollers 36, a total of 3 - 4, are arranged below the rotary line moving plate 31. They are in contact with the rotary line 21 of the rotary assembly to assist the movement of the rotary line moving plate 31 and reduce metal wear at the same time.

[0044] The structure and function of the automatic code scanning tooling 4 in this embodiment are similar to those of the patent CN114428210A held by the applicant, so they will not be described in detail. The equipment in this embodiment improves the processing efficiency of test products. It has been improved from scanning each single product one by one originally to being able to scan four products at a time, and at the same time significantly reduces the possibility of recognition errors.

[0045] As Figures 4-6 shown, the resistance test tooling in this embodiment is composed of a tooling base 74 perpendicular to the rotary assembly. A servo variable pitch mechanism 71 and an upper probe module 72 are arranged above it, and a lower probe module 73 is arranged below it. The servo variable pitch mechanism 71 is equipped with a plurality of upper probe modules 72, which can drive these upper probe modules 72 to move and can adjust the distance between the upper probe modules 72 to be the same or different.

[0046] Based on the foregoing, the servo variable pitch mechanism 71 is composed of a vertical lifting module 711 and a horizontal moving module 712. The upper probe module 72 is installed on the horizontal moving module 712.

[0047] In practical applications, the vertical lifting module 711 is installed on the tooling base 74. This module is a common lifting tooling, mainly composed of key components such as vertical slide rails, servo motor 1, and auxiliary slide rails. The horizontal movement module 712 is located above the vertical lifting module 711. It includes the base of the horizontal movement module 712 and the servo equal-distance slide table synchronous variable-distance module 714, and the latter is installed on the base of the horizontal movement module 712. The servo equal-distance slide table synchronous variable-distance module 714 is composed of multiple sliders. The upper probe module 72 is composed of several upper probe mounting seats 721 and corresponding upper probes 722. These upper probe mounting seats 721 are arranged on the sliders of the servo equal-distance slide table synchronous variable-distance module 714. Each upper probe mounting seat 721 is equipped with a set of upper probes 722, which are controlled by the servo equal-distance slide table synchronous variable-distance module 714 to achieve synchronous distance adjustment of the upper probes 722.

[0048] On the side of the upper probe 722 facing the product, the lower probe of the lower probe module 73 faces the other side of the product. The upper probe 722 is used to test whether the inside of the high-voltage relay is closed or to test other performances, and the lower probe tests the circuit of the high-voltage relay.

[0049] The execution steps of the resistance test tooling are as follows: During the installation process, first place four high-voltage relays side by side on the workpiece tray 32, and then pass the pins of the high-voltage relays through the through slots 3311 of the adapter base 331 and fix them by the fixing posts 334 of the fixing module 332. The servo variable-distance mechanism 71 will adjust the height of the upper probe 722 group and the distance between the upper probe 722 groups according to the model of the high-voltage relay. When the high-voltage relay is transported to the detection station on the rotation line 21 of the rotating assembly, the upper probe 722 will contact the contact point at the top of the high-voltage relay, and the lower probe will contact the pins led out from the adapter base 331. The upper probe 722, the high-voltage relay, and the lower probe together form a test circuit to perform performance detection.

[0050] In this embodiment, the structures and functions of the insulation withstand voltage test tooling 6 and the comprehensive parameter test tooling 10 are similar to those of the patent CN114428210A owned by the applicant, so they will not be described in detail. The difference is that the equipment in this embodiment improves the test efficiency and realizes batch testing. The original single-product single-test mode has been improved. Now four products can be tested simultaneously, and the possibility of operation errors is greatly reduced.

[0051] Such as Figures 7-8As shown in the figure, the airtightness test tooling 8 of this embodiment includes a support mounting plate 81, and an electrode lifting module 82 and a lower probe module 73 are provided on one side facing the rotary conveying module 2. The electrode lifting module 82 includes a lifting module 821 and an electrode mounting group 822. The lifting module 821 is composed of standard lifting machinery and includes components such as a motor, a belt, and a slide rail. The electrode mounting group 822 is installed on the lifting module 821 and is composed of a fixing plate 8221 and an electrode mounting block 8222. A plurality of fixing grooves are provided on the fixing plate 8221, and the electrode mounting blocks 8222 are installed in these grooves. Each electrode mounting block 8222 is provided with two electrode posts 8223, and these electrode posts 8223 face the electromagnetic switch electrical appliance to be tested and are used to test the same product simultaneously. The electrode posts 8223 are made of copper column materials, and a metal spring 8224 is sleeved on each electrode post 8223 to ensure timely rebound during the test, prevent direct rigid contact between the copper column and the product, and avoid possible damage. During installation, mounting grooves are formed on the electrode mounting blocks 8222. First, the inner lining sleeve 8225 is inserted, and then the motor column sleeved with the metal spring 8224 is inserted into the inner lining sleeve 8225.

[0052] In this embodiment, the lifting module 821 is adopted, which can flexibly adjust the height of the electrode posts 8223 to meet the specific requirements of different product heights. In addition, a horizontal servo variable pitch adjustment module can be equipped on the upper layer of the lifting module 821 to meet the diverse requirements of different product spacings. Of course, by adjusting the shape or position of the fixing grooves on the fixing plate 8221, the position of the electrode mounting group 822 can also be adjusted to meet the spacing requirements of different products. There are various horizontal adjustment methods and will not be elaborated here.

[0053] The structure of the mechanical aging test tooling 11 in this embodiment is the same as that of the airtightness test tooling, and the only difference lies in the circuit design and parameter control.

[0054] As Figure 9 shown, this embodiment also discloses a test process for testing electromagnetic switch electrical appliances, which covers product performance test processes, including insulation withstand voltage test, airtightness test, resistance test, and comprehensive parameter test; and process test processes, including electric cleaning and mechanical aging test.

[0055] Among them, the overall test process of the electromagnetic switch electrical appliance is as follows: (1) First, place the product into the feeding channel 4 of the test equipment, start the automatic code scanning tooling 5 and perform automatic code scanning. If the code scanning fails, the product needs to be placed again; after successful code scanning, continue to the next process.

[0056] (2) Next, perform an insulation withstand voltage test on the product. If the test is unqualified, record or send an alarm signal; if it is qualified, enter the next process.

[0057] Specifically, the withstand voltage test of insulation is applicable to evaluating the withstand voltage performance of the product. The specific test conditions are as follows: Use the insulation withstand voltage test tooling 6 to test the main contacts of the electromagnetic switchgear, including the insulation performance between the main contacts and the coil.

[0058] (3) Then conduct the airtightness test. If it is unqualified, record or alarm it. If it is qualified, continue.

[0059] Specifically, the airtightness test is applicable to checking whether there is leakage in the product. Use the airtightness test tooling 8 to inspect the main contacts.

[0060] (4) After that, conduct electric cleaning on the product.

[0061] Specifically, the electric cleaning method is applicable to removing the oxide layer on the surface of the product. Use the electric cleaning tooling 9 to clean it repeatedly for multiple times.

[0062] (5) After electric cleaning, conduct resistance testing on the product. If it is unqualified, record or alarm it. If it is qualified, proceed to the next process.

[0063] Specifically, the resistance test is applicable to testing the contact resistance of the product. Use the resistance test tooling 7 to conduct the test, test the contact resistance data of the main contacts, and conduct power-on repeatedly for multiple times.

[0064] (6) Then conduct comprehensive parameter testing. If it is unqualified, record or alarm it. If it is qualified, continue.

[0065] Specifically, the comprehensive parameter test is applicable to evaluating the performance indicators of the product. The comprehensive parameter test tooling 10 measures the closing time or closing voltage; and the release time or release voltage through the comprehensive parameter test method.

[0066] (7) Finally, perform mechanical aging testing on the product, record the relevant data, and then proceed to the next process.

[0067] Specifically, the mechanical aging test is applicable to evaluating the mechanical durability performance of the product. Use the mechanical aging test tooling 11 to conduct on-off operations, and reciprocate 100 times.

[0068] (8) In summary, judge the test results. The unqualified products will be recorded or alarmed and enter the defective product discharging channel 122; if the test is qualified, the qualified products will enter the non-defective product discharging channel 121.

[0069] It is obvious to those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, and that the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present application is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present application. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A multifunctional testing device for testing electromagnetic switch electrical appliances, comprising an equipment platform, on which a rotary conveying module is arranged, on which a plurality of loading fixtures are arranged, and beside which a testing fixture is arranged, characterized in that: Each of the loading fixtures is provided with more than one product, and each of the testing fixtures is suitable for testing more than one product at the same time.

2. The multifunctional testing device for testing electromagnetic switching devices according to claim 1, characterized in that: The loading tooling includes a turntable moving plate, a workpiece pallet, and several transfer units. The workpiece pallet is fixed on one side above the turntable moving plate, and several transfer units are fixed on the other side above. Several products are fixed on the workpiece pallet, and the positions and quantities of the transfer units correspond to the positions and quantities of the products.

3. The multifunctional testing device for testing electromagnetic switching devices according to claim 2, characterized in that: The adapter unit includes an adapter base and a fixed module, the adapter base is fixed on the turntable moving plate, and the fixed module is arranged on the adapter base; the fixed module at least includes a fixed block, the fixed block is provided with a threaded hole 1, the wall of the adapter base facing the threaded hole 1 is provided with a through hole 2, and each of the fixed blocks is provided with a fixed column; the adapter base is provided with a plurality of horizontally arranged through grooves, and the through grooves are perpendicular to the through hole 2; a slot for the fixing column is provided in the through groove; the fixing column is suitable for passing through the threaded hole 1 and the through hole 2, and the end of the fixing column is suitable for being inserted into the slot.

4. The multifunctional testing device for testing electromagnetic switching devices according to claim 1, characterized in that: The loading tooling also includes a turntable fixing block, a carrier plate precision positioning part, and a plurality of rollers located below the turntable moving plate. The top of the turntable fixing block is connected to the turntable moving plate. One side of the turntable fixing block is fixed to the turntable, and the other side is fixed to the carrier plate precision positioning part. The carrier plate precision positioning part is located on the side of the turntable fixing block facing the test tooling. The rollers are suitable for contacting with the turntable conveying module and assisting the movement of the turntable moving plate.

5. The multifunctional testing device for testing electromagnetic switching devices according to claim 1, characterized in that: The test tooling is applied to various types of insulation withstand voltage test tooling, air tightness test tooling, resistance test tooling, comprehensive parameter test tooling or mechanical aging test tooling; It is suitable for arranging a loading channel, an automatic code scanning tooling, an insulation withstand voltage test tooling, an air tightness test tooling, an electric cleaning tooling, a resistance test tooling, a comprehensive parameter test tooling, a mechanical aging test tooling and a unloading channel in sequence on the equipment platform along the direction of the rotary conveying module.

6. The multifunctional testing device for testing electromagnetic switching devices according to claim 5, characterized in that: The resistance testing tooling includes a tooling base arranged perpendicular to the rotating assembly, a servo variable pitch mechanism and an upper probe module are arranged above the tooling base, and a lower probe module is arranged below the tooling base; a plurality of groups of upper probe modules are arranged on the servo variable pitch mechanism, and the servo variable pitch mechanism is suitable for driving a plurality of groups of upper probe modules to move and forming the same or different sizes of spacing between the upper probe modules.

7. The multifunctional testing device for testing electromagnetic switching devices according to claim 6, characterized in that: The servo variable distance mechanism comprises a vertical lifting module and a horizontal moving module. The vertical lifting module is arranged on the tooling base, the horizontal moving module is arranged above the vertical lifting module, and the upper probe module is arranged on the horizontal moving module.

8. The multifunctional testing device for testing electromagnetic switching devices according to claim 7, characterized in that: The horizontal moving module includes a horizontal moving module base, a servo equidistant slide synchronous pitch variable module and an upper probe module. The servo equidistant slide synchronous pitch variable module is installed on the horizontal moving module base. The servo equidistant slide synchronous pitch variable module includes a plurality of sliders. The upper probe module includes a plurality of upper probe mounting seats and a plurality of groups of upper probes. The upper probe mounting seats are arranged on each slider of the servo equidistant slide synchronous pitch variable module, and each of the upper probe mounting seats is provided with a group of upper probes. The servo equidistant slide synchronous pitch variable module is suitable for driving the plurality of groups of upper probes to synchronously adjust the distance. The upper probe faces the top of the product, and the lower probe of the lower probe module faces the pin at the bottom of the product.

9. The multifunctional testing device for testing electromagnetic switching devices according to claim 5, characterized in that: The air tightness testing tooling includes a supporting mounting plate, and an electrode lifting module and a lower probe module are provided on the side of the supporting mounting plate facing the rotary conveying module; the electrode lifting module includes a lifting module and an electrode mounting group, and the electrode mounting group is arranged on the lifting module, and the electrode mounting group includes a fixed plate and an electrode mounting block, and a plurality of fixed grooves are provided on the fixed plate, and the electrode mounting block is installed in the fixed groove, and each electrode mounting block is provided with two electrode columns, and each electrode column is sleeved with a metal spring.

10. A testing process for testing electromagnetic switching devices, characterized in that: The test equipment described in claims 5 to 10 includes product performance test procedures: insulation withstand voltage test, air tightness test, resistance test and comprehensive parameter test; and process test procedures: electrical cleaning and mechanical aging test; The overall testing process is as follows: First, put the product into the loading channel of the test equipment, start the automatic code scanning tool of the equipment and scan the code automatically. If the code scanning fails, the product needs to be placed again; if the code scanning is successful, continue to the next process; Next, the insulation and voltage withstand test tool performs an insulation and voltage withstand test on the product. If the test fails, it will be recorded or an alarm signal will be issued; if it passes, it will enter the next process; Then the air tightness test tool will perform the air tightness test. If it fails, it will be recorded or alarmed. If it passes, it will continue; Afterwards, the electric cleaning tool performs electric cleaning on the product; After electric cleaning, the resistance test tool will test the resistance of the product. If it fails, it will be recorded or alarmed. If it passes, it will enter the next process. The comprehensive parameter test tooling will conduct comprehensive parameter test again. If it fails, it will be recorded or alarmed. If it passes, it will continue; Finally, the mechanical aging test tool performs a mechanical aging test on the product and records the relevant data before entering the next process; The test results are judged, and unqualified products will be recorded or alarmed, and enter the unloading channel for defective products; If the test is qualified, the qualified products will enter the good product discharge channel of the discharge channel.

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