A monostable electromagnetic relay high-speed detection system

Abstract

The utility model provides a kind of monostable electromagnetic relay high-speed detection system, including base and integratedly arranged on the base sorting machine, test grading unit, marking unit;The sorting machine includes feeding unit, suction and drop unit, receiving unit and safety protection unit;The feeding unit is used to load the relay to be detected;The suction and drop unit includes vision module, mechanical arm, suction nozzle module, servo motor and suction nozzle cylinder;The test grading unit includes test instrument and test tooling, the test instrument is configured grading interface, the grading interface and the electric control cabinet communication interface of the sorting machine line connection correspond;The input end of the marking unit is connected with the sorting machine, and the output end is fixed on base.The utility model can ensure grading accurate, test tooling quickly replace reduce downtime, greatly improve detection efficiency and maintainability, ensure that large production process efficient operation.

Description

Technical Field

[0001] This utility model belongs to the field of relay testing technology, and in particular relates to a high-speed testing system for monostable electromagnetic relays. Background Technology

[0002] Monostable electromagnetic relays are one of the key components of power control and protection equipment, and their stable operation directly affects the reliability and sensitivity of the protection device. Currently, this type of relay commonly uses a blister pack as a carrier to test and classify the pull-in voltage, with up to four levels. As users compress product delivery cycles and enterprise control process turnover costs, the industry is vigorously promoting automation and digital transformation strategies.

[0003] To adapt to the new situation and changes, more and more companies are introducing advanced intelligent manufacturing planning and scheduling systems to solve production scheduling and production dispatching collaboration problems, which has led to the need to purchase multiple traditional automatic detection systems to increase the detection volume and meet production needs. Traditional automatic detection systems, such as the dual-coil monostable relay described in patent application CN202410591268.0, include contacts, a return spring, and a coil. The coil is used to selectively energize and de-energize the contacts to control their engagement or disengagement. The coil includes an engagement coil and a disengagement coil. The engagement coil, when energized, overcomes the spring force of the return spring to drive the contacts to engage and maintain energization, keeping the contacts engaged. The disengagement coil, when energized, works in conjunction with the return spring to drive the contacts to disengage, enabling the relay to operate in a monostable state and preventing contact sticking. By incorporating a disengagement coil, the disengagement coil and the return spring work together to drive the contacts to disengage when the monostable relay disengages, resulting in a greater driving force for contact disengagement. This prevents contact sticking, reduces safety accidents caused by contact sticking, and improves the reliability and safety of the relay. A relay contact life testing system and method, patent application number CN202010522945.5, includes a monitoring and control device, an I / O expansion board, a contactor device, and a load assembly. The system is compatible with life testing of both monostable and bistable relay contacts. It features a user-friendly touchscreen interface for selecting test items, setting contact opening / closing control time and the number of tests, and displaying the current number of completed tests. The system can automatically switch between different loads, significantly reducing control costs and minimizing controller size. The testing method is also compatible with life testing of both monostable and bistable relay contacts. Furthermore, the method monitors the state of the tested contact K0 in real time, automatically stopping testing when an abnormal state of K0 is detected.

[0004] However, traditional systems suffer from several drawbacks. They fail to fully utilize the principle of time overlap to achieve seamless integration between units. This means that while some units are running, others are in a standby state, resulting in unnecessary waste. Furthermore, the maintenance costs of regularly replacing inkjet printing consumables and cleaning printheads are high, and there are issues such as the inability to quickly locate and troubleshoot faults when equipment stops unexpectedly. These problems directly lead to the detection efficiency not keeping up with the pace of large-scale production, further exacerbating the contradiction that the detection output cannot meet production needs, and thus reducing the competitiveness of enterprises. Utility Model Content

[0005] The purpose of this invention is to provide a high-speed detection system for monostable electromagnetic relays. This invention can ensure accurate grading, and the test fixtures can be quickly changed to reduce downtime, greatly improving detection efficiency and maintainability, and ensuring the efficient operation of large-scale production processes.

[0006] To achieve the above objectives, the present invention adopts the following technical solution.

[0007] A high-speed detection system for monostable electromagnetic relays includes: a base and a sorting machine, a test grading unit, and a marking unit integrated on the base.

[0008] The input end of the marking unit is connected to the sorting machine, and the output end is fixed to the base. The testing and grading unit includes testing instruments and testing fixtures. The testing instruments are equipped with grading interfaces, and the grading interfaces are connected one-to-one with the communication interfaces of the electrical control cabinet of the sorting machine.

[0009] The aforementioned monostable electromagnetic relay high-speed detection system includes a sorting machine comprising a feeding unit on the left side of the system and a receiving unit on the right side, as well as a suction and release unit connecting the feeding unit and the receiving unit.

[0010] The feeding unit and the suction and lowering unit are both housed within the safety protection unit.

[0011] The aforementioned high-speed detection system for monostable electromagnetic relays includes a feeding unit comprising a feeding moving tray, a feeding limit sensor, and a feeding cylinder. The feeding moving tray is connected to the feeding cylinder, and front and rear feeding limit sensors are provided below the feeding moving tray. The feeding moving tray is used to load the relay to be tested.

[0012] The aforementioned high-speed detection system for monostable electromagnetic relays includes a suction and release unit comprising a robotic arm, a vision module, a suction nozzle module, a servo motor, and a suction nozzle cylinder. The vision module is used to photograph the relays to be inspected, which are mounted on a feeding moving tray. The robotic arm includes a loading robotic arm and a unloading robotic arm.

[0013] The vision module, the suction module, the servo motor, and the suction cylinder are respectively integrated on the loading and unloading robotic arm; the suction module includes grippers.

[0014] The aforementioned high-speed detection system for monostable electromagnetic relays includes a receiving unit comprising a receiving moving tray, a receiving limit sensor, and a receiving cylinder. The receiving moving tray is used to load the relays that have been marked.

[0015] The receiving pallet is assembled with the receiving cylinder in upper and lower layers by bolts and sliders, and is placed in the middle of the receiving unit.

[0016] The aforementioned monostable electromagnetic relay high-speed detection system includes a safety protection unit comprising an emergency stop switch located on the right side of the system operation interface, inductive switches and light curtains on both sides of the inlet and outlet, and a dust cover placed around the support substrate.

[0017] In the aforementioned high-speed detection system for monostable electromagnetic relays, the feeding moving tray and the receiving moving tray are equipped with chamfered limiting frames.

[0018] The aforementioned high-speed detection system for monostable electromagnetic relays includes a vision module comprising a camera and a ring light source, with the ring light source positioned below the camera.

[0019] The aforementioned high-speed detection system for monostable electromagnetic relays includes a suction module comprising grippers; the grippers include a first gripper and a second gripper, the first gripper being a non-rotatable gripper with its active area located in the feeding unit and the test grading unit, and the second gripper being a rotatable gripper with its active area located in the test grading unit, the marking unit, and the receiving unit.

[0020] In the aforementioned monostable electromagnetic relay high-speed detection system, the input end of the marking unit is connected to the sorting machine, and the output end of the marking unit is fixed on the base.

[0021] The marking unit includes a laser head, which is connected to the control box via an optical fiber;

[0022] The laser head has a fixed position to ensure marking effect. The laser beam energy in the laser head is set within a predetermined range, so that the depth of the characters marked on the relay is at the level of several micrometers. The laser head in the marking unit, in addition to the front emission port, is equipped with a metal protective cover that extends beyond the vertical cross-section of the lens. A metal baffle should be provided in front of the marking unit.

[0023] The aforementioned high-speed detection system for monostable electromagnetic relays includes a test grading unit comprising test instruments and test fixtures connected externally through its interface.

[0024] The test fixture includes a test base and an inductive switch located on the left front side of the test fixture, which is fixed on the sorting machine support base plate.

[0025] The input end of the test fixture is equipped with a plug, which connects to the output interface on the back panel of the test instrument via an adapter on the support base plate. The beneficial effects of this invention are: The monostable electromagnetic relay high-speed detection system provided by this invention achieves high-speed automatic operation of processes such as material handling, testing and grading, marking, and material collection. The entire stroke is rationally designed, with seamless connections between each stage, increasing the detection rate per unit time. Furthermore, the rapid replacement of test fixtures reduces downtime, and the laser marking machine requires no maintenance. Compared to traditional automatic detection systems that require waiting and consumable replacement, this system not only significantly improves detection efficiency but also greatly enhances equipment maintainability, ensuring efficient operation of large-scale production processes. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the high-speed detection system of the monostable electromagnetic relay provided by this utility model in Embodiment 1;

[0027] Figure 2 This is a schematic diagram of the feeding unit of the monostable electromagnetic relay high-speed detection system in Example 1;

[0028] Figure 3 This is a schematic diagram of the pick-up and drop-off unit of the monostable electromagnetic relay high-speed detection system in Example 1;

[0029] Figure 4 This is a schematic diagram of the test grading unit of the high-speed detection system for monostable electromagnetic relays in Example 1;

[0030] Figure 5 This is a schematic diagram of the receiving unit of the monostable electromagnetic relay high-speed detection system in Example 1;

[0031] Figure 6 This is a schematic diagram of the sorting interface distribution of the monostable electromagnetic relay high-speed detection system in Example 2;

[0032] Figure 7 This is a schematic diagram of the electrical control distribution of the receiving unit in the high-speed detection system of the monostable electromagnetic relay in Example 2.

[0033] Explanation of reference numerals in the attached drawings: 101-Base; 102-Sorter; 1021-Feeding unit; 10211-Feeding moving tray; 10212-Feeding limit sensor; 10213-Feeding cylinder; 10214-Feeding button with indicator light; 10215-Metal liner; 1022-Suction and lowering unit; 10221-Robotic arm; 10222-Vision module; 102221-Camera; 102222-Ring light source; 10223-Nose module; 102231-Gripper; 10224-Servo motor; 1 0225-Suction nozzle cylinder; 1023-Collection unit; 10231-Collection moving tray; 10232-Collection limit sensor; 10233-Collection cylinder; 10234-Collection button with light; 1024-Safety protection unit; 10241-Emergency stop switch; 10242-Induction switch one; 10243-Dust cover; 10244-Light curtain; 103-Grading test unit; 1031-Testing instrument; 1032-Testing base; 1033-Induction switch two; 1034-Adapter; 104-Marking unit. Specific Implementation

[0034] The high-speed detection system of the monostable electromagnetic relay of this utility model will now be described in detail with reference to the accompanying drawings.

[0035] Example 1: This example provides a high-speed detection system for a monostable electromagnetic relay, as shown in the attached figure. Figure 1 As shown, it includes: a base 101 and a sorting machine 102, a test and grading unit 103, and a marking unit 104 integrated on the base.

[0036] The sorting machine 102 includes a feeding unit 1021, a suction and release unit 1022, a receiving unit 1023, and a safety protection unit 1024.

[0037] The input end of the marking unit 104 is connected to the sorting machine 102, and the output end is fixed to the base 101. The laser head in the marking unit has a fixed position structure to ensure the marking effect. The marked characters must be clearly identifiable, and the clarity of the characters must remain unchanged after spraying with conformal coating. The laser beam energy in the marking unit should be set within a reasonable range to ensure that the depth of the characters marked on the relay is controlled at the micrometer level, avoiding damage to the relay's airtightness. The laser head in the marking unit should be equipped with a metal protective cover in addition to the front emission port, and should extend beyond the vertical cross-section of the lens to prevent foreign objects from touching it. A metal baffle should be provided in front of the marking unit to prevent the laser from accidentally hitting other areas due to laser machine malfunction. The laser head in the marking unit is connected to the control box via optical fiber, and the bending radius of the optical fiber should not be less than 15 cm to ensure normal signal transmission.

[0038] The safety protection unit 1024 includes an emergency stop switch 10241, a sensor switch 10242, a dust cover 10243, and a light curtain 10244.

[0039] As attached Figure 1 and attached Figure 2 As shown, the feeding unit 1021 includes: a feeding moving tray 10211, a feeding limit sensor 10212, a feeding cylinder 10213, a feeding button with light 10214, and a metal liner 10215. The feeding moving tray 10211 is used to load a relay to be tested. The relay to be tested is delivered to the detection position of the feeding limit sensor 10212 under the action of the feeding cylinder 10213.

[0040] The feeding pallet 10211 shall be equipped with a chamfered limiting frame 10214 to facilitate the operator in placing the material boxes filled with relays one box per pallet. After the material boxes are placed, the material boxes and the relays inside should be placed as flat as possible. Photoelectric switches on both sides of the feeding platform will detect their flatness to ensure smooth image recognition and pickup. If the material boxes are misaligned and fail the detection, the feeding pallet will automatically pop out and prompt the operator to place the relays correctly. The bottom of the feeding pallet 10211 shall be equipped with front and rear limit sensors to ensure that it enters or pops out to the appropriate position. The inner side of the feeding pallet 10211 shall be provided with a semi-circular arc groove to facilitate the photoelectric switches on the feeding platform to detect whether the material box has been replaced. The feeding pallet 10211 shall be extended outward and equipped with a metal backing plate 10215 to support the top cover of the material box after it is opened, so as to avoid interference with the cylinder guide rail and affect normal entry and exit.

[0041] The feeding button 10214 with indicator light is used to control the frequency at which the feeding cylinder 10213 transports the material box full of relays to be inspected.

[0042] As attached Figure 1 and attached Figure 3 As shown, the suction and lowering unit includes a robotic arm 10221, a vision module 10222, a suction nozzle module 10223, a servo motor 10224, and a suction nozzle cylinder 10225. The vision module 10222 includes a camera 102221 and a ring light source 102222. The suction nozzle module 10223 includes two grippers 102231.

[0043] The vision module 10222 takes pictures, identifies, and locates the relay under test mounted on the feeding mobile tray.

[0044] During the testing process, on the one hand, the suction module 10223, under the action of the suction cylinder 10225, picks up the relay to be tested through the gripper 102231 driven by the robotic arm 10221 and the servo motor 10224 via the gripper 102231, and places the relay to be tested into the test grading unit. On the other hand, under the action of the suction cylinder 10225, the suction module 10223, under the action of the suction cylinder 10225, picks up the tested relay through the gripper 102231 driven by the robotic arm 10221 and the servo motor 10224, and puts it into the marking unit for marking. Then, according to the empty material box positioning coordinates given by the vision module 10222, the marked relay is placed into the receiving unit.

[0045] The vision module 10222 uses a high-definition camera for image recognition and positioning. When designing the vision module, issues such as varying color depths, small and dense surface characters, and different pin functions in the relays necessitate the selection of a high-resolution camera with good compatibility and orientation recognition capabilities, along with a ring light source 102222, to identify whether the relays are placed backwards and determine their position coordinates. Considering that relays placed in the box will be close together, the picking up of one relay may cause the adjacent relay to shift. Therefore, during the testing of the previous relay, an image is taken for recognition and positioning before picking up the next relay. During programming, it is important to set appropriate image similarity and position offset in the standard image stored in the computer so that relays with font and position deviations within the specified range are still picked up. The suction nozzle module on the robotic arm corrects the coordinates of the picked-up relays through the three-sided limiting frame at the bottom of the gripper to ensure accurate placement into the integrated test fixture.

[0046] The camera 102221 in the vision module 10222 should be connected by a highly flexible wire harness snap-fit ​​to meet the requirements of reliable image transmission under the high-speed operation of the robotic arm; the light-emitting diodes in the ring light source 102222 of the vision module 10222 are evenly distributed in a circular array and the light intensity is basically consistent.

[0047] The suction module 10223 includes a first gripper and a second gripper, both made of aluminum with a surface roughness of no more than 0.4 micrometers. Limit sensors are provided at the upper and lower ends of the suction module 10223. The first gripper is non-rotatable, with its movable area located in the feeding unit and the testing and grading unit. The second gripper is rotatable, with the rotation angle controlled between 85° and 95°, with 90° being optimal. Its movable area is located in the testing and grading unit, the marking unit, and the receiving unit.

[0048] The suction cylinder 10225 on the suction module 10223 should have adjustable force and stroke to ensure reliable contact between the relay pins and the test socket. It should also be equipped with a spring buffer to prevent damage to the casing and pins when picking up or lowering the relay. During power-on testing, to avoid interference from the magnetic field generated by iron materials affecting the test results, the suction module should use aluminum grippers with heat treatment to ensure wear resistance. The suction cup in the suction module 10223 should extend 1-2 mm below the top surface of the grippers and be equipped with a throttle valve to adjust the suction force according to the weight of the relay, ensuring stable and reliable relay pickup.

[0049] The slide rail on the robotic arm 10221 or the belt on the servo motor 10224 should run smoothly and without noise, and without slippage, so that the equipment has a low probability of failure during long-term operation.

[0050] As attached Figure 1 and attached Figure 4 As shown, the test grading unit includes a test instrument 1031, a test base 1032, an inductive switch 1033, and an adapter 1034. The test instrument is equipped with a grading interface, which corresponds one-to-one with the communication interface of the electrical control cabinet of the sorting machine, and the connection uses shielded wires to avoid external signal interference.

[0051] The test base 1032 in the test grading unit is made of epoxy resin. The springs in the grooves on both sides of the test base 1032 should be at the same level as the top of the base. A DIP switch should also be provided to select the appropriate grade according to the contact type of the relay under test. The inductive switch 1033 monitors whether there is a relay under test on the test base. The sensing distance and light intensity are adjustable. The Kelvin four-wire method is used to ensure the accuracy of the test.

[0052] During the test segmentation process, insert the spring clip into the groove of the test socket. The clamp should be fixed to the side of the spring clip insulation sleeve. A small gap should be left between the spring clip and the inner wall of the test socket groove and the outer clamp. It is required that the central axis of the spring clips on both sides of the test fixture is in the same plane as the central axis of the relay pin under test. Too tight or too loose will not be conducive to the relay test and will affect the results. The test must use the Kelvin four-wire method to ensure that the contact impedance measurement value reaches the milliohm level. According to the test instrument manual, connect the power supply line and the test line to the spring clip in the test socket accordingly. Do not mix them up to avoid open or short circuits, and fix them with heat shrink tubing.

[0053] The test base 1032 is fixed to the base by positioning pins and fastening bolts. The other side is connected to the output interface of the back panel of the test instrument via a pluggable plug and an adapter 1034. This allows for quick replacement and avoids long-term equipment downtime. The adapter 1034 should preferably use 25 pins to accommodate the number of wires and the required installation space. The pluggable plug should be selected accordingly.

[0054] As attached Figure 1 and attached Figure 5 As shown, the receiving unit includes a receiving moving tray 10231, a receiving limit sensor 10232, a receiving cylinder 10233, and a receiving button with indicator light 10234 (see [reference]). Figure 1 ) and receiving photoelectric switch 10235.

[0055] According to some embodiments, the receiving moving tray 10231 is used to load the marked relay; after the flatness is detected as qualified by the receiving photoelectric switch 10235, the receiving moving tray 10231 is sent out to the sensing position of the receiving limit sensor 10232 under the action of the receiving cylinder 10233; the receiving light button 10234 is used to control the frequency of the receiving cylinder 10233 transporting the marked relay.

[0056] The receiving mobile tray 10231 is equipped with a chamfered limiting frame, photoelectric switches are provided on both sides of the receiving unit for monitoring, and a sensor is also provided at the bottom of the receiving mobile tray to detect whether the material box has been replaced.

[0057] The operation steps of the automatic detection system include: turning on the testing instrument, testing program, and laser scanner; setting the product and time data storage paths, ensuring the data format is strictly in accordance with the instructions to guarantee data acquisition; starting the sorting machine; initializing to ensure all servo motors are at their origin positions; placing the material box filled with relays into the feeding moving tray; pressing the feeding indicator button in sequence; selecting the relay model and detection mode in the control program; entering the work number and batch number; clicking "start run"; the camera taking pictures to identify and locate the coordinates of the relay under test in the feeding unit and the empty material box in the receiving unit, and sending the coordinates to the sorting machine control motherboard and PLC for processing; and then... The first gripper of the suction module on the robotic arm picks up the relay based on the received signal and gently places it into the integrated test holder. The sorting machine receives the feedback output signal and sends it to the testing instrument to indicate that testing can begin. At the same time, the first gripper picks up the next relay. After the previous relay is tested and sends an instruction to the sorting machine, the testing instrument determines the voltage range of the tested relay based on the test results. The second gripper picks up the tested relay and rotates it 90 degrees, moving it to the marking area in a static state for marking. The next relay is then placed into the test holder for testing. The marked relay is then placed into the designated voltage range material box by the second gripper, and so on.

[0058] Example 2: Based on the monostable electromagnetic relay high-speed detection system provided in Example 1, this example provides the distribution of the sorting machine's grading interface and the electrical control distribution of the receiving unit.

[0059] The test grading unit includes a test instrument, a test base, an induction switch, and an adapter. The back of the test instrument is equipped with a grading interface, which is connected one-to-one with the communication interface of the electrical control cabinet of the sorting machine.

[0060] As attached Figure 6 As shown, the testing instrument needs to be equipped with an automatic sorting interface. BIN1 is COM ground, BIN2 to BIN5 are pull-in voltage sorting signals, BIN6 to BIN9 are release voltage sorting signals, BIN10 is the end signal, BIN11 is the start signal, BIN12 is the pass signal, BIN13 is the fail signal, and BIN15 is the common terminal for output signals. The interface sorting signals are output as combined switch signals. According to the actual usage requirements, they are connected one by one to the communication interface of the sorting machine host. The sorting attributes of the storage tray can be set in the control program according to the actual situation.

[0061] The electrical control distribution diagram of the receiving unit is attached. Figure 7 As shown, the suction module can accurately place the tagged relays into the designated empty receiving boxes based on the positioning coordinates of the empty receiving boxes provided by the vision module. The receiving moving tray can be flexibly set with grading attributes and the number of full boxes it can receive according to actual needs. During unloading, the empty boxes must be placed flat so that they can be recognized and positioned by the camera to ensure smooth lowering of the relays. When photoelectric sensors installed on both sides of the receiving area detect misalignment, an alarm is triggered, accompanied by an alarm buzzer.

[0062] Example 3: As a further preferred embodiment of this utility model, in a specific embodiment, an exhaust device can be added to eliminate dust generated during marking. The exhaust port should be equipped with a 0.5 cm mesh metal screen to prevent the relay from falling into the pipe. An ion electrostatic air gun can also be added for daily cleaning of dust on the platform and metal shavings on the test stand, ensuring smooth operation of the robotic arm and stable and reliable relay testing.

[0063] In addition, the detection system frame is equipped with gratings and sensors, and all moving trays, robotic arms and cylinders are equipped with limit sensors. Safety thresholds are also forcibly set in the control program of all moving parts to ensure that the moving parts of the equipment do not endanger personal safety during operation.

[0064] In summary, the monostable electromagnetic relay high-speed detection system of this invention achieves high-speed automatic operation of processes such as material picking, testing and grading, marking, and material collection. The entire stroke is reasonably designed, and each link is seamlessly connected, which increases the detection volume per unit time. The rapid replacement of testing fixtures reduces downtime, and the laser engraving machine is maintenance-free. Compared with traditional automatic detection systems that require waiting and replacement of consumables, it not only significantly improves detection efficiency but also greatly enhances equipment maintainability, ensuring the efficient operation of large-scale production processes and thus reducing enterprise costs.

Claims

1. A high-speed detection system for a monostable electromagnetic relay, characterized in that, include: A base and a sorting machine, a testing and grading unit, and a marking unit integrated on the base; The input end of the marking unit is connected to the sorting machine, and the output end is fixed on the base; The test grading unit includes test instruments and test fixtures. The test instruments are equipped with grading interfaces, and the grading interfaces are connected one-to-one with the communication interfaces of the electrical control cabinet of the sorting machine.

2. The high-speed detection system for a monostable electromagnetic relay according to claim 1, characterized in that, The sorting machine includes a feeding unit on the left side of the system and a receiving unit on the right side, as well as a suction and lowering unit connecting the feeding unit and the receiving unit; the feeding unit and the suction and lowering unit are together housed within a safety protection unit.

3. The high-speed detection system for a monostable electromagnetic relay according to claim 2, characterized in that, The feeding unit includes a feeding moving tray, a feeding limit sensor, and a feeding cylinder. The feeding moving tray is connected to the feeding cylinder. Front and rear feeding limit sensors are provided below the feeding moving tray. The feeding moving tray is used to load the relay to be tested.

4. The high-speed detection system for a monostable electromagnetic relay according to claim 2, characterized in that, The suction and unloading unit includes a robotic arm, a vision module, a suction nozzle module, a servo motor, and a suction nozzle cylinder. The vision module is used to take pictures of the relays to be inspected loaded on the feeding moving tray. The robotic arm includes a loading robotic arm and an unloading robotic arm. The vision module, suction nozzle module, servo motor, and suction nozzle cylinder are respectively integrated on the loading and unloading robotic arms. The suction nozzle module includes grippers.

5. The high-speed detection system for a monostable electromagnetic relay according to claim 2, characterized in that, The receiving unit includes a receiving moving tray, a receiving limit sensor, and a receiving cylinder. The receiving moving tray is used to load the relay that has completed marking. The receiving moving tray is combined with the receiving cylinder in upper and lower layers by bolts and sliders, and is placed in the middle of the receiving unit.

6. The high-speed detection system for a monostable electromagnetic relay according to claim 2, characterized in that, The safety protection unit includes an emergency stop switch located on the right side of the system operation interface, sensor switches and light curtains on both sides of the inlet and outlet, and a dust cover placed around the support substrate.

7. The high-speed detection system for a monostable electromagnetic relay according to claim 2, characterized in that, The feeding and receiving mobile trays are equipped with chamfered limiting frames.

8. The high-speed detection system for a monostable electromagnetic relay according to claim 2, characterized in that, The vision module includes a camera and a ring light source, with the ring light source positioned below the camera.

9. The high-speed detection system for a monostable electromagnetic relay according to claim 2, characterized in that, The suction nozzle module includes grippers; the grippers include a first gripper and a second gripper, the first gripper is a non-rotatable gripper with its active area located in the feeding unit and the testing and grading unit, and the second gripper is a rotatable gripper with its active area located in the testing and grading unit, the marking unit, and the receiving unit.

10. The high-speed detection system for a monostable electromagnetic relay according to claim 1, characterized in that, The input end of the marking unit is connected to the sorting machine, and the output end of the marking unit is fixed on the base; the marking unit includes a laser head, which is connected to the control box via an optical fiber; The laser head has a fixed position structure to ensure the marking effect; the laser beam energy in the laser head is set within a set range so that the depth of the characters marked on the relay is at the level of several micrometers; the laser head in the marking unit is equipped with a metal protective cover in addition to the front emission port, and extends beyond the vertical cross-section of the lens; a metal baffle should be provided in front of the marking unit.

11. The high-speed detection system for a monostable electromagnetic relay according to claim 1, characterized in that, The test grading unit includes test instruments and test fixtures connected to it via its interface; The test fixture includes a test base and an induction switch located on the left front side of the test fixture, which is fixed on the sorting machine support base plate; The input end of the test fixture is equipped with a plug, which is connected to the output interface on the back plate of the test instrument through an adapter on the support base plate.

Images