Circuit breaker electromagnetic assembly detection method, circuit breaker production line, storage medium and electronic equipment
By simulating short-circuit current detection of electromagnetic components and judging their actuation performance and speed, the problem of failing to identify false welding in the existing technology is solved, early identification and elimination of unqualified components is achieved, and the efficiency and quality of circuit breaker production is improved. .
Patent Information
- Application Number
- CN202411246244.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2024-12-13
AI Technical Summary
The existing small circuit breaker production lines cannot effectively identify the false welding problem of electromagnetic components, resulting in unqualified batch products, resulting in waste of resources and increased time costs.
By passing the electromagnetic component to simulate short circuit current, determine whether the actuation of the pin has reached the reference position, and calculate the true speed. If it fails, a removal command will be issued to prevent the unqualified components from entering the subsequent assembly process.
Identify and eliminate unqualified electromagnetic components in advance, avoid resource waste, improve the standardization, digitalization and intelligence of the production line, and reduce the generation of unqualified products.
Smart Images
Figure CN119114469A_ABST
Abstract
Description
Technical Field
[0001] The invention patent relates to the field of circuit breaker production equipment, and in particular to a detection method, equipment and storage medium for a circuit breaker electromagnetic component. Background Art
[0002] A miniature circuit breaker, also known as an air switch, is a common terminal protection switch with functions such as short circuit protection and overload protection. Its short circuit protection function (also called instantaneous tripping performance) is achieved by actuating the internal electromagnetic release when a short circuit occurs in the circuit to be protected.
[0003] For existing small circuit breakers, it has basically achieved fully automated production. In the fully automated production process, its electromagnetic release, terminal board, and static contact will be welded to form a whole (also called electromagnetic assembly, such as Figure 1 As shown, it includes a coil frame 1 and a coil 2. The coil frame 1 has a moving iron core, a static iron core, a spring, a push rod, etc. One end of the coil 2 is welded to the static contact 3, and the other end of the coil 3 is welded to the terminal board. ), and then the electromagnetic assembly is loaded onto the carrier, transported to the rear assembly process by the carrier, and installed on the housing. After all components are installed, the entire product is riveted to form a complete product, and then the instantaneous protection function (to determine whether the electromagnetic release meets the standard) and overload protection function of the whole machine are tested.
[0004] The electromagnetic components here are Figure 1 As shown in the figure, for the electromagnetic release, the two ends of the coil are welded to the static contact and the terminal board by welding technology during the manufacturing process. As far as the welding process is concerned, it cannot be guaranteed that the welding is perfect every time, and there is a possibility of cold welding. For cold welding, unless the welding gap exposed on the surface is too large, it can be identified by visual inspection or naked eyes, and the cold welding inside will be very difficult to detect. Once the cold welding occurs, it will undoubtedly affect the instantaneous tripping performance of the product and reduce the qualified rate of the product. At present, the existing production line cannot effectively identify the cold welding problem of electromagnetic components. It can only rely on the complete assembly of the whole machine to detect whether the instantaneous tripping performance meets the standard.
[0005] This is extremely disadvantageous for identification after the whole machine is assembled and riveted. If it is just an accidental cold weld, it may be caused by a problem in the welding process of a certain electromagnetic component. The subsequent electromagnetic components may still meet the standards and will not cause too much waste of resources. However, if it is a non-accidental cold weld (non-accidental cold weld includes many situations, such as cold welds caused by wear of the electrodes required for welding, cold welds caused by wear of the coil winding equipment and bending equipment due to coil structure deviation), it will cause a batch of electromagnetic components to fail to meet the standards and a batch of whole machines to fail. If it is detected after the whole machine is assembled, it will undoubtedly cause a lot of material waste (it is very likely that all parts except the electromagnetic component are intact, but because the whole machine has been riveted, it can only be scrapped), and it will also cause a lot of "waste processes" (the waste process here means that it is meaningless to complete all the production and assembly processes of the defective electromagnetic component), resulting in a waste of time and resource costs.
[0006] To sum up, how to optimize the existing production process of small circuit breakers is an integral part of achieving standardization, digitization, informatization and intelligence in circuit breaker production and manufacturing. Summary of the invention
[0007] In view of the problems existing in the prior art, the present invention aims to provide a detection method for the electromagnetic component of a circuit breaker, a production line of a circuit breaker, a storage medium and an electronic device, which can timely detect whether the electromagnetic component is qualified, avoid waste of resources, and provide a certain foundation for the standardization, digitization, informatization and intelligence of circuit breaker production and manufacturing.
[0008] To achieve the above object, the present invention discloses a method for detecting an electromagnetic component of a circuit breaker, the method comprising: Passing a simulated short-circuit current through the electromagnetic component to be tested in the vehicle; Receiving visual inspection information of the electromagnetic component and its carrier through which a simulated short-circuit current is passed; It is determined whether the ejector pin of the electromagnetic component to be tested reaches the reference position on the carrier when it is actuated. If it does not reach the reference position, it is identified as an unqualified component and a rejection instruction is issued to reject it.
[0009] Furthermore, the reference object on the carrier is a mechanical trigger switch or a structural feature mark or a color mark or a pattern mark, and the corresponding reference positions are the position where the mechanical trigger switch is triggered or the position of the structural feature mark or the position of the color mark or the position of the pattern mark.
[0010] Furthermore, it also includes calculating the actual speed Vt of the push rod of the electromagnetic component to be tested when it is actuated, and judging whether the actual speed Vt is greater than the speed threshold Vs. If it is not greater than the speed threshold Vs, it is determined to be an unqualified component and a rejection instruction is issued to reject it.
[0011] Furthermore, the reference object on the vehicle is a mechanical trigger switch, and the corresponding reference positions are the positions at which the mechanical trigger switch is triggered; with the help of the mechanical trigger switch, the effective trigger time ∆T is calculated, ∆T=(Tn-Tm)-Ts, where Tm is the initial time point Tm when the simulated short-circuit current is passed through the electromagnetic component to be tested, Tn is the time point when the mechanical trigger switch sends a signal, and Ts is the inherent trigger time of the mechanical trigger switch; the distance Ln is calculated through visual detection information, where Ln is the distance from the push rod to the corresponding mechanical trigger switch when not actuated; through the above parameters, the speed threshold Vs=10Ln is calculated, and the true speed Vt=Ln / ((Tn-Tm)-Ts) is calculated.
[0012] Furthermore, when a first situation is met, an alarm instruction is issued or a pause instruction is issued to the production equipment of the electromagnetic components. The first situation is the situation where unqualified components appear twice in succession.
[0013] Furthermore, when the second situation is met, an alarm instruction is issued or a pause instruction is issued to the production equipment of the electromagnetic components. The second situation is that two unqualified components appear and the interval between the two times is less than 10.
[0014] The present application also discloses a production line of a circuit breaker, wherein: A carrier, used for carrying the electromagnetic component to be tested, with a reference object on the carrier, and the reference object is located in the actuation direction of the ejector rod of the electromagnetic component; CCD visual inspection device, which takes pictures of the vehicle and electromagnetic components to generate visual inspection information and feed it back to the console; A short-circuit current simulation device, the ejector pins of which are respectively connected to the static contact of the electromagnetic component to be tested and the terminal board to form a loop, and generates a simulated short-circuit current after receiving a test instruction; A reject device, which rejects a carrier equipped with a defective electromagnetic component upon receiving a reject instruction; The main control console is used to control the CCD visual inspection device, the short-circuit current simulation device and the rejection device; after the main control console issues a test instruction to the short-circuit current simulation device, it receives the visual inspection information from the CCD visual inspection device to determine whether the ejector pin of the electromagnetic component to be tested reaches the reference position where the reference object on the carrier is located. If it does not reach the reference position, it is identified as an unqualified component and a rejection instruction is issued.
[0015] Furthermore, the reference object on the carrier is a mechanical trigger switch, which feeds back a trigger signal to the main console when triggered; the main console calculates the effective trigger time ∆T, ∆T=(Tn-Tm)-Ts, where Tm is the initial time point Tm when the simulated short-circuit current is passed through the electromagnetic component to be tested, Tn is the time point when the mechanical trigger switch sends a signal, and Ts is the inherent trigger time of the mechanical trigger switch; the main console calculates the distance Ln through the visual detection information captured by the CCD visual detection device, and Ln is the distance from the push rod to the corresponding mechanical trigger switch when not actuated; the main console calculates the speed threshold Vs=10Ln, calculates the actual speed Vt=Ln / ((Tn-Tm)-Ts), and determines whether the actual speed Vt is greater than the speed threshold Vs. If not, it is determined to be an unqualified component and a rejection instruction is issued.
[0016] Furthermore, the main control console records the occurrence of unqualified components, and when a first situation is met, issues an alarm command or a pause command to the production equipment of the electromagnetic components, the first situation being the occurrence of two unqualified components in succession.
[0017] Furthermore, the main control console records the occurrence of unqualified components, and when a second situation is met, issues an alarm command or a pause command to the production equipment of the electromagnetic components. The second situation is that two unqualified components appear and the interval between the two unqualified components is less than 10.
[0018] The present application also discloses a computer-readable storage medium, wherein the storage medium stores a computer program, and when the computer program is executed by a processor, any of the above-mentioned methods is implemented.
[0019] The present application also discloses an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements any of the above-described methods when executing the program.
[0020] The beneficial effects of the present invention include: The detection method of the electromagnetic assembly of the circuit breaker proposed by the present invention, firstly, uses the simulated short-circuit current to pass through the electromagnetic assembly to determine whether the top rod reaches the reference position after the actuation, and then determines whether the instantaneous tripping performance of the electromagnetic assembly is qualified. It can identify unqualified electromagnetic assemblies (for example, due to cold welding) in advance, and eliminate some unqualified electromagnetic assemblies as soon as possible, so as to avoid the waste of unqualified electromagnetic assemblies on subsequent assembly processes and other circuit breaker components. Secondly, by identifying unqualified electromagnetic assemblies, the person in charge of the production line can determine whether there is a problem with the production line as early as possible, and intervene in maintenance work as soon as possible if a problem occurs, so as to avoid the occurrence of large quantities of unqualified products. Finally, by detecting the electromagnetic assembly, the corresponding test can be started from the assembly aspect, which provides a certain foundation for realizing more standardized, digital, information-based, and intelligent production and manufacturing of circuit breakers. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The present invention will be further described below in conjunction with the accompanying drawings.
[0022] Figure 1 It is a structural schematic diagram of an electromagnetic component in the prior art; Figure 2 It is a flow chart of the electromagnetic component detection of the present invention; Figure 3 A flow chart of the electromagnetic component detection (increasing the ejector speed) of the present invention; Figure 4 is a schematic diagram of a carrier equipped with an electromagnetic component according to the present invention; Figure 5 It is a schematic diagram of a carrier equipped with an electromagnetic component (when the mechanical trigger switch is triggered) and a main control console of the present invention; Figure 6 It is a schematic diagram of a production line of a circuit breaker of the present invention. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the present invention are described clearly below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0024] An embodiment of the present invention provides a method for detecting an electromagnetic component of a circuit breaker, such as Figure 2 As shown, including: S100. Applying a simulated short-circuit current to the electromagnetic component M1 to be tested in the carrier 100; S102. Receive visual inspection information of the electromagnetic component M1 and its carrier 100 into which a simulated short-circuit current is passed; S104. Determine whether the push rod M100 of the electromagnetic component M1 to be tested reaches the reference position on the carrier 100 when it is actuated. If it does not reach the reference position, it is identified as an unqualified component and a rejection instruction is issued to reject it.
[0025] This detection method can be added to the existing circuit breaker production line, that is, after the electromagnetic component M1 is installed on the carrier 100, before it is transported to the process of being assembled into the shell, an inspection process for the electromagnetic component M1 is added.
[0026] In this case, by passing a simulated short-circuit current through the electromagnetic component M1, it is determined whether the push rod M100 reaches the reference position after actuation, and further whether the instantaneous tripping performance of the electromagnetic component M1 is qualified. In this way, unqualified electromagnetic components M1 (for example, due to poor soldering) can be identified early, and some unqualified electromagnetic components M1 can be eliminated as soon as possible to avoid subsequent waste.
[0027] like Figure 6 As shown in the figure, the production line structure of the circuit breaker that implements this method includes: The production equipment 200 of the electromagnetic assembly M1 includes the process of bending and winding the wire to form a coil, the process of assembling the coil frame, coil, moving iron core, static iron core, spring, push rod M100, etc. to form an electromagnetic release, the process of welding the two ends of the coil to the static contact and the terminal board to form the electromagnetic assembly M1, and the process of placing the electromagnetic assembly M1 into the carrier 100. The specific steps and implementation methods of these processes are conventional means in this field and will not be repeated here.
[0028] The carrier 100 (with the electromagnetic component M1) from the production equipment 200 of the electromagnetic component M1 is transported to the subsequent process through the conveyor belt. Here, the carrier 100 has a reference object 101. There are many types of reference objects 101. It can be a mechanical trigger switch 101' (such as a micro switch), a structural feature mark (such as a protrusion or a groove), a color mark (such as a colored dot or line), a pattern mark (such as a scale line), etc. No matter what kind of reference object 101, as long as it can be clearly determined by image recognition whether the top rod M100 of the electromagnetic release can reach the position where the reference object 101 is located, that is, the reference position.
[0029] The main function of the CCD visual inspection device 300 is to photograph the carrier 100 equipped with the electromagnetic component M1, especially to photograph when the electromagnetic component M1 is subjected to a simulated short circuit test, and to feed back the formed visual inspection information (also called image information) to the main console 600. Here, the CCD visual inspection device 300 is used as a common visual inspection device, and its implementation principle will not be described in detail here.
[0030] The short-circuit current simulation device 400 includes a plurality of test points, each of which can test the electromagnetic component M1 in a carrier 100. Specifically, each test point has a pair of ejector pins, and the pair of ejector pins are respectively connected to the static contact of the electromagnetic component M1 to be tested and the terminal board to form a loop. In this way, the short-circuit current simulation device 400 can apply a simulated short-circuit current to the electromagnetic component M1 to be tested. This type of simulated short-circuit current device is often used to detect the short-circuit protection function of the circuit breaker. The present application applies this existing simulated short-circuit current device to the detection method of the electromagnetic component M1, and does not improve the principle of the short-circuit current simulation device 400 itself. Therefore, the specific implementation principle of the short-circuit current simulation device 400 will not be repeated here.
[0031] The rejecting device 500 rejects the carrier 100 with the unqualified electromagnetic component M1 when receiving the rejecting instruction. The rejecting device 500 here adopts a manipulator, and the rejecting device 500 can reject the carrier 100 with the unqualified electromagnetic component M1 under the control of the main control console 600.
[0032] The conveyor belt 800 is used to transport the carrier 800 to different workstations. The structure and transmission principle of the conveyor belt 800 are conventional technical means in the art, so no further description is given here.
[0033] The main control console 600 can be understood as a host computer, which is used to perform overall control of the production line. Of course, the overall control here does not specifically mean that all processes in the production line are directly controlled by the main control console 600; it also includes indirect control, for example, each sub-process has a sub-controller, and the main control console 600 indirectly controls the processes in the production line by controlling the sub-controller.
[0034] Since the main technical problem solved by the present application is how to realize the instantaneous tripping performance detection of the electromagnetic component M1, the following only introduces the relevant content processes about the main control console 600, and the control of the remaining processes refers to the existing technology and will not be repeated here.
[0035] The main control console 600 here includes the control of the CCD visual inspection device 300, the short-circuit current simulation device 400 and the rejection device 500.
[0036] Specifically, when the carriers 100 equipped with the electromagnetic components M1 to be tested reach the test point of the short-circuit current simulation device 400 through the conveyor belt, the main control console 600 issues a test instruction to the short-circuit current simulation device 400. The short-circuit current simulation device 400 transmits the simulated short-circuit current through the ejector pin, and the CCD visual detection device 300 also starts to capture image information and feeds it back to the main control console 600. The main control console 600 determines whether the ejector M100 of the electromagnetic component M1 reaches the reference position of the reference object 101 on the carrier 100 based on the image information to determine whether it is a qualified product. If it does not reach the reference position, it is considered to be an unqualified product, and a rejection instruction is issued. The rejection device 500 will reject the carrier 100 equipped with the unqualified product. If it is considered to be a qualified product, it can continue to flow into the subsequent workstations of the production line (for example, the assembly station in the shell) through the conveyor belt 800. In this way, some electromagnetic components M1 that are obviously unable to achieve the instantaneous protection function can be clearly excluded. Such electromagnetic components M1 often have serious cold solder joints, resulting in a serious lack of electromagnetic force required for tripping (the current flowing through the coil is too small).
[0037] Furthermore, the above method can also include calculation of the true speed Vt of the push rod M100 when the electromagnetic component M1 to be tested is actuated, and determine whether the true speed Vt is greater than the speed threshold Vs. If it is not greater than the speed threshold Vs, it is identified as an unqualified component and a rejection instruction is issued to reject it.
[0038] like Figure 3-5 As shown, to achieve this method, the specific method and the corresponding structure of the production line are as follows: at this time, the reference object 101 on the carrier 100 is a mechanical trigger switch 101', and the corresponding reference positions are respectively positions where the mechanical trigger switch 101' is triggered. In other words, the mechanical trigger switch 101' and the main control console 600 are connected in an electrical signal manner, and when the mechanical trigger switch 101' is triggered, a signal is sent to the main control console 600. Here, the mechanical trigger switch 101' is connected to the main control console 600 through a group of signal pins on the short-circuit current simulation device 400 to achieve electrical signal connection with the main control console 600.
[0039] The main control console 600 calculates the speed threshold Vs and the real speed Vt according to the effective trigger time ∆T and the distance Ln.
[0040] The specific effective trigger time ∆T is calculated as follows: the specific formula is ∆T= (Tn-Tm)-Ts. Tm is the initial time point Tm when the simulated short-circuit current is passed through the electromagnetic component M1 to be tested, that is, the time when the controller sends a test instruction to the short-circuit current simulation device 400. Tn is the time point when the mechanical trigger switch 101' sends a signal, that is, the time from the electromagnetic component M1 being actuated until the top rod M100 triggers the mechanical trigger switch 101', and the mechanical trigger switch 101' sends a signal to the main control console 600. Ts is the inherent trigger time of the mechanical trigger switch 101'. Taking the micro switch as an example, it is the time from the button of the micro switch being pressed until the internal moving and static contact bridges are in contact. The trigger time of the micro switch here is generally a fixed set value, such as 5ms (ms is microseconds). Taking the actual simulation of short-circuit current as an example, the detection time of a certain electromagnetic component M1 is Tm 16:35:28:35 (that is, 16:35:28:35 and 35 microseconds), and Tn is 16:35:29:37 (that is, 16:35:29:37 and 37 microseconds). At this time, ∆T=102ms-5ms=97ms, that is, the effective trigger time is 97ms.
[0041] The specific distance Ln is measured as follows: since the CCD visual inspection device 300 also takes images before inspection, the main console 600 can calculate the distance Ln based on the image information (Ln refers to the distance from the push rod M100 to the corresponding mechanical trigger switch 101' when the electromagnetic component M1 is not actuated).
[0042] The main control console 600 calculates the corresponding speed threshold Vs according to the formula speed threshold Vs=10Ln (the theoretical tripping time needs to be less than 0.1s, that is, less than 0.1 seconds, so the speed threshold Vs=Ln / 0.1). The main control console 600 calculates the corresponding real speed Vt according to the formula real speed Vt=Ln / ((Tn-Tm)-Ts).
[0043] The main control console 600 determines whether the obtained actual speed Vt is greater than the obtained speed threshold Vs. If it is not greater than the speed threshold Vs, it is determined to be an unqualified component and a rejection instruction is issued to reject it.
[0044] This structure, on the basis of judging whether the push rod M100 is in place after actuation (the push rod M100 reaches the reference position), adds the judgment of whether the movement speed of the push rod M100 meets the standard, so that it can more accurately judge whether the electromagnetic component M1 meets the standard; exclude some electromagnetic components M1 that meet the standard in position but do not meet the speed standard. The reason for adding the judgment of speed is that there is a positive correlation between the movement speed and the force (in the circuit breaker, it is the force of the push rod M100 on the lock to unlock it, which can also be called the tripping force). By judging the speed, some electromagnetic components M1 that do not meet the force (tripping force) can also be excluded.
[0045] Furthermore, in the above method, an early warning method for some special situations can be added. The specific method for implementing this method and the corresponding structure of the production line are as follows: When the first situation is met, the main control console 600 will issue an alarm command or a pause command to the production equipment 200 of the electromagnetic component M1. Here, the first situation refers to the situation where two unqualified components appear in succession, for example, the first electromagnetic component M1 is judged to be unqualified, and the second electromagnetic component M1 adjacent to it is also judged to be unqualified. The first situation occurs, most likely because the internal components of the production equipment 200 of the electromagnetic component M1 (such as electrodes for welding, clamps for winding coils, etc.) have been severely worn, so the main control console 600 will issue an alarm command or a pause command to the production equipment 200 of the electromagnetic component M1.
[0046] Here, the alarm instruction is sent to the alarm device 700, and the alarm device 700 will give an alarm after receiving the alarm instruction. There are many alarm modes, such as sound alarm, indicator light alarm, etc. This alarm device 700 is already a relatively mature device on the production line, and its principle will not be described here, and only the source of its alarm instruction will be introduced.
[0047] Here, the pause command means that the main control console 600 controls the production equipment 200 of the electromagnetic component M1 to suspend production and processing to prevent serious wear of the internal components of the electromagnetic component M1 production equipment. The maintenance personnel can identify the information on the production line (alarm or shutdown) and quickly carry out maintenance, thereby ultimately reducing the output of unqualified electromagnetic components M1 and minimizing losses.
[0048] Of course, the main control console 600 will also issue an alarm command or a pause command to the production equipment 200 of the electromagnetic component M1 when the second situation is met. Here, the second situation refers to a situation where two unqualified components appear and the interval between the two times is less than 10. For example, the third electromagnetic component M1 is judged to be unqualified, and the ninth electromagnetic component M1 is also judged to be unqualified. The specific alarm instructions and pause instructions have been introduced above and will not be repeated here. Through the judgment of this second situation, it can be known in advance that the internal components of the production equipment 200 of the electromagnetic component M1 may have worn out. If the wear is further deepened, more unqualified products may appear. Maintenance personnel can identify the information on the production line (alarm or shutdown) and quickly go for maintenance, which will ultimately reduce the output of unqualified electromagnetic components M1 and reduce losses.
[0049] Based on the same technical concept, an embodiment of the present application provides a computer-readable storage medium, wherein the storage medium stores a computer program, and when the computer program is executed by a processor, the detection method of the circuit breaker electromagnetic assembly M1 described in any one of the above items is implemented.
[0050] A person skilled in the art can understand that all or part of the steps in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc.
[0051] Based on the same technical concept, an embodiment of the present application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the detection method of the circuit breaker electromagnetic assembly M1 described in any one of the above items is implemented.
[0052] The electronic device may be a terminal device and / or a server. The specific connection medium between the processor and the memory is not limited in the embodiments of the present application. For example, the processor and the memory are connected via a bus. The bus can be divided into an address bus, a data bus, a control bus, and the like. In this embodiment, the processor may be a general-purpose processor, such as a central processing unit (CPU), a digital signal processor, an application-specific integrated circuit), a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, which may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present application. A general-purpose processor may be a microprocessor or any conventional processor, and the like. The steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor.
[0053] It is worth noting that in the above method and device embodiments, the various step modules included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention.
[0054] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present application and cannot be considered to limit the scope of implementation of the present application. All equivalent changes and improvements made within the scope of the present application should still fall within the scope of the patent coverage of the present application.
Claims
1. A method for detecting an electromagnetic component of a circuit breaker, characterized in that: include: Passing a simulated short-circuit current through the electromagnetic component to be tested in the vehicle; Receiving visual inspection information of the electromagnetic component and its carrier through which a simulated short-circuit current is passed; It is determined whether the ejector pin of the electromagnetic component to be tested reaches the reference position on the carrier when it is actuated. If it does not reach the reference position, it is identified as an unqualified component and a rejection instruction is issued to reject it.
2. A method for detecting a circuit breaker electromagnetic component according to claim 1, characterized in that: The reference object on the carrier is a mechanical trigger switch or a structural feature mark or a color mark or a pattern mark, and the corresponding reference positions are the position where the mechanical trigger switch is triggered or the position of the structural feature mark or the position of the color mark or the position of the pattern mark.
3. A method for detecting a circuit breaker electromagnetic assembly according to claim 1, characterized in that: It also includes calculating the actual speed Vt of the ejector rod when the electromagnetic component to be tested is actuated, and judging whether the actual speed Vt is greater than the speed threshold Vs. If it is not greater than the speed threshold Vs, it is identified as an unqualified component and a rejection instruction is issued to reject it.
4. A method for detecting a circuit breaker electromagnetic assembly according to claim 3, characterized in that: The reference object on the carrier is a mechanical trigger switch, and the corresponding reference position is the position where the mechanical trigger switch is triggered; with the help of the mechanical trigger switch, the effective trigger time ∆T is calculated, ∆T=(Tn-Tm)-Ts, where Tm is the initial time point Tm when the simulated short-circuit current is passed through the electromagnetic component to be tested, Tn is the time point when the mechanical trigger switch sends a signal, and Ts is the inherent trigger time of the mechanical trigger switch; the distance Ln is calculated through visual detection information, where Ln is the distance from the ejector rod to the corresponding mechanical trigger switch when it is not actuated; The speed threshold Vs=10Ln is calculated using the above parameters, and the true speed Vt=Ln / ((Tn-Tm)-Ts) is calculated.
5. A method for detecting a circuit breaker electromagnetic component according to any one of claims 1 to 4, characterized in that: When the first situation is met, an alarm instruction is issued or a suspension instruction is issued to the production equipment of the electromagnetic components. The first situation is the situation where two unqualified components appear consecutively; And / or, when a second situation is met, an alarm instruction is issued or a pause instruction is issued to the production equipment of the electromagnetic components, and the second situation is that two unqualified components appear and the interval between the two times is less than 10.
6. A production line for circuit breakers, characterized in that: A carrier, used for carrying the electromagnetic component to be tested, with a reference object on the carrier, and the reference object is located in the actuation direction of the ejector rod of the electromagnetic component; CCD visual inspection device, which takes pictures of the vehicle and electromagnetic components to generate visual inspection information and feed it back to the console; A short-circuit current simulation device, the ejector pins of which are respectively against the static contact of the electromagnetic component to be tested and the terminal board, and generate a simulated short-circuit current after receiving a test instruction; A reject device, which rejects a carrier equipped with a defective electromagnetic component upon receiving a reject instruction; The main control console is used to control the CCD visual inspection device, the short-circuit current simulation device and the rejection device; after the main control console issues a test instruction to the short-circuit current simulation device, it receives the visual inspection information from the CCD visual inspection device to determine whether the ejector pin of the electromagnetic component to be tested reaches the reference position where the reference object on the carrier is located. If it does not reach the reference position, it is identified as an unqualified component and a rejection instruction is issued.
7. A circuit breaker production line according to claim 6, characterized in that: The reference object on the carrier is a mechanical trigger switch, which feeds back a trigger signal to the main console when triggered; the main console calculates the effective trigger time ∆T, ∆T=(Tn-Tm)-Ts, where Tm is the initial time point Tm when the simulated short-circuit current is passed through the electromagnetic component to be tested, Tn is the time point when the mechanical trigger switch sends a signal, and Ts is the inherent trigger time of the mechanical trigger switch; the main console calculates the distance Ln through the visual detection information captured by the CCD visual detection device, where Ln is the distance from the ejector rod to the corresponding mechanical trigger switch when not actuated; The main control console calculates the speed threshold Vs=10Ln, calculates the actual speed Vt=Ln / ((Tn-Tm)-Ts), and determines whether the actual speed Vt is greater than the speed threshold Vs. If not, it is identified as an unqualified component and a rejection instruction is issued.
8. A circuit breaker production line according to claim 6 or 7, characterized in that: The main control console records the occurrence of unqualified components, and issues an alarm instruction or a pause instruction to the production equipment of the electromagnetic components when a first situation is met, the first situation being the occurrence of two unqualified components in succession; And / or, the main control console records the occurrence of unqualified components, and when a second situation is met, issues an alarm command or a pause command to the production equipment of the electromagnetic components. The second situation is that two unqualified components appear and the interval between the two unqualified components is less than 10.
9. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 6 is implemented.
10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the method according to any one of claims 1 to 6 is implemented.