A welding anomaly product screening apparatus and a flow carrier of a circuit breaker electromagnetic system

Abstract

The utility model provides a kind of welding abnormal product screening equipment and the flow carrier of circuit breaker electromagnetic system. Welding abnormal product screening equipment includes liftable detection pedestal, fixed frame fixed in detection pedestal and probe mechanism, probe mechanism includes detection probe being movably installed in detection pedestal, elastic component being arranged between fixed frame and detection probe and detection sensor being fixed to detection pedestal, the lower end of detection probe is equipped with probe contact part that protrudes downward from detection pedestal, probe contact part can be contacted with the welding point of welding abnormal product, so that detection sensor is triggered. The flow carrier of circuit breaker electromagnetic system includes lifting mechanism, jaw mechanism and the above-mentioned welding abnormal product screening equipment. The detection mode of the present application is simple, reliable and effective, with low risk of misjudgment. The overall structure is simple, with low cost. It is highly adaptable and can be used for detecting the welding quality of various welded products.

Description

Technical Field

[0001] This utility model relates to the field of mass automated production technology of electromagnetic systems for miniature circuit breakers, and in particular to a welding defect product screening device and a transfer device for circuit breaker electromagnetic systems equipped with the welding defect product screening device. Background Technology

[0002] Miniature circuit breakers are low-voltage electrical devices primarily used in low-voltage circuits. They are characterized by their simple structure, convenient operation, and reliable protection performance, and are widely used in power distribution systems in homes, commercial facilities, and industrial settings. The electromagnetic system of a miniature circuit breaker is one of its core components, mainly used to provide overload and short-circuit protection for the circuit.

[0003] Currently, electromagnetic systems for miniature circuit breakers are mass-produced automatically on automated welding production lines. However, during the welding process on these lines, various abnormal conditions can occur, such as repeated shutdowns of the welding equipment, abnormal fluctuations in the external power grid, and fluctuations in welding output power, severely impacting the welding results. This leads to abnormal welding quality in the electromagnetic system products, resulting in issues like incomplete welding, poor welding with low current, and solder detachment. Due to the malfunctions of the welding equipment and the relatively small number of defective electromagnetic systems, identifying these defective products is challenging.

[0004] Furthermore, existing automated welding production lines for miniature circuit breaker electromagnetic systems are largely standardized, leaving insufficient space for installing visual inspection equipment. This makes it impossible to perform full inspection of electromagnetic system products flowing through the automated welding production line. Moreover, visual inspection equipment requires optical cameras, but automated welding production lines for miniature circuit breaker electromagnetic systems suffer from mechanical vibrations and harsh working environments. Even if visual inspection equipment is installed on these production lines, limitations in product placement and shooting angles still result in low inspection accuracy and a high risk of misjudgment. Additionally, visual recognition systems based on visual inspection equipment are generally quite expensive. Utility Model Content

[0005] The purpose of this invention is to provide a screening device for welding defects and a transfer device for the electromagnetic system of a circuit breaker, which can reliably detect and screen welding defects, thereby solving the problem of difficulty in identifying defective products in the existing electromagnetic system.

[0006] To achieve this objective, the present invention adopts the following technical solution.

[0007] In a first aspect, this utility model provides a screening device for welding defects, used to detect whether the weld points on the welded parts are qualified. The screening device for welding defects includes a liftable detection base, a fixed frame fixed to the detection base, and a probe mechanism. The probe mechanism includes a detection probe that can be moved up and down in the detection base, an elastic component disposed between the fixed frame and the detection probe, and a detection sensor fixed to the detection base. The lower end of the detection probe is provided with a probe contact head that extends downward from the detection base.

[0008] When the weld point on the welded part is qualified, the probe contact head is offset from the weld point in the thickness direction of the weld point;

[0009] When the weld point on the welded part is unqualified, the probe head and the weld point overlap at least partially in the thickness direction of the weld point, and the probe head can contact the weld point and trigger the detection sensor.

[0010] As an optional solution for the welding defect product screening equipment, the detection sensor is a displacement photoelectric sensor and is arranged horizontally opposite to the detection probe. The end face of the detection probe facing the displacement photoelectric sensor is provided with an arc surface and a vertical plane connected vertically.

[0011] When the detection probe is in its initial position, the arcuate surface faces the displacement photoelectric sensor.

[0012] After the detection probe moves upward, the vertical plane is directly opposite the displacement photoelectric sensor.

[0013] As an optional solution for the welding defect product screening device, the detection sensor is a linear Hall sensor, and the probe mechanism further includes a magnet fixed to the detection probe, and the linear Hall sensor can sense the magnet.

[0014] As an optional solution for the welding defect product screening device, the fixed frame includes a crossbeam and support legs connected to both ends of the crossbeam. The support legs are fixedly connected to the detection base. The crossbeam is located above the detection base and has a first hole. The upper part of the detection probe has a second hole. The upper and lower ends of the elastic member are respectively accommodated in the first hole and the second hole.

[0015] As an optional solution for the welding defect product screening device, the elastic component is a compression spring.

[0016] As an optional solution for the welding abnormality product screening equipment, the support leg is fixed to the detection base by fastening bolts. The support leg is provided with a first connecting hole that mates with the fastening bolts. The detection base is provided with a second connecting hole that mates with the fastening bolts and a countersunk hole for accommodating the head of the fastening bolts. The diameter of the first connecting hole is smaller than the diameter of the second connecting hole.

[0017] As an optional solution for the welding defect product screening device, the upper end of the detection probe is provided with a limiting step distributed above the detection base, and the limiting step can abut against the top surface of the detection base.

[0018] As an optional solution for the welding defect product screening device, there are multiple probe mechanisms, and the multiple probe mechanisms are arranged in a matrix array.

[0019] As an optional solution for the welding abnormality product screening device, the welding abnormality product screening device also includes a controller and an alarm, and both the detection sensor and the alarm are connected to the controller.

[0020] Secondly, this utility model provides a transfer device for a circuit breaker electromagnetic system, including a lifting mechanism, a gripper mechanism, and a welding abnormality product screening device as described above. The lifting mechanism includes a lifting drive source and a main mounting plate that is pulsatorically connected to the lifting drive source. The gripper mechanism includes an opening and closing drive source mounted on the main mounting plate and a pair of mechanical grippers that are pulsatorically connected to the opening and closing drive source. The pair of mechanical grippers are used to grip the circuit breaker electromagnetic system. The detection base is fixedly connected to the main mounting plate or the opening and closing drive source.

[0021] As an optional solution for the transfer device of the circuit breaker electromagnetic system, the lifting drive source is a cylinder, and the lifting mechanism also includes a lifting connecting block and a vertically extending linear guide mechanism. The lifting connecting block includes a vertical plate and a horizontal plate connected to the lower end of the vertical plate. The linear guide mechanism is connected between the vertical plate and the cylinder body of the lifting drive source. The lower end of the piston rod of the cylinder of the lifting drive source is connected to the horizontal plate, and the horizontal plate is fixed to the top surface of the main mounting plate.

[0022] As an optional solution for the transfer device of the circuit breaker electromagnetic system, the opening and closing drive source is a double piston rod cylinder, and a pair of mechanical grippers are respectively connected to the piston rod of the cylinder of the opening and closing drive source.

[0023] As an optional embodiment of the transfer device for the electromagnetic system of the circuit breaker, the mechanical gripper includes a movable clamping plate, a gripper body, and a gripper liner. The movable clamping plate is connected to the opening and closing drive source. The gripper body is fixed to the lower end of the movable clamping plate, and the gripper liner is fixed to the inner wall of the lower end of the gripper body.

[0024] As described above, the welding abnormality product screening equipment and the transfer device for the circuit breaker electromagnetic system involved in this utility model have the following beneficial effects:

[0025] The welding defect screening equipment disclosed in this application triggers a detection sensor by contacting the weld joint of the defective product with a detection probe, thereby detecting and screening defective products. This detection method is simple, reliable, and effective, with a low risk of false positives. The overall structure is simple and inexpensive. It is also highly applicable to the inspection of welding quality in various welded products. Therefore, this welding defect screening equipment can detect and screen welding defective products in a low-cost, simple, and reliable manner. It is well-suited for full inspection of welded products produced in batches using automated production processes, accurately screening out defective products with abnormal weld joints.

[0026] The transfer device for the circuit breaker electromagnetic system involved in this application is a carrier on the automatic welding production line of the circuit breaker electromagnetic system, used to transfer welded products of the circuit breaker electromagnetic system. This application integrates a defective product screening device into the transfer device of the circuit breaker electromagnetic system, which is less affected by the working environment of the automatic welding production line. When transferring welded products of the circuit breaker electromagnetic system, defective products in the welded products of the circuit breaker electromagnetic system are screened out at the same time, so as to ensure the quality of the circuit breaker electromagnetic system. Attached Figure Description

[0027] Figure 1 and Figure 2 The schematic diagrams of the current transfer device of the circuit breaker electromagnetic system of this utility model are shown from different perspectives.

[0028] Figure 3 for Figure 1 Enlarged view of circle A;

[0029] Figure 4 This is a schematic diagram of the inspection process for welding products of the electromagnetic system of the circuit breaker according to the present invention.

[0030] Figure 5 for Figure 4 A structural schematic diagram of a welded product for an electromagnetic system of a circuit breaker from another perspective;

[0031] Figure 6This is a schematic diagram of the structure of the welding abnormality product screening device of this utility model in its initial state. The diagram only shows a set of probe mechanisms and a circuit breaker electromagnetic system welded product, and the detection base is omitted.

[0032] Figure 7 for Figure 6 A schematic diagram showing that the weld points on the electromagnetic system of the circuit breaker have passed inspection.

[0033] Figure 8 for Figure 6 A schematic diagram showing a failed solder joint inspection on a welded product of an interruptor electromagnetic system.

[0034] Figure 9 for Figure 8 A schematic diagram showing the interaction between the detection probe and the detection sensor after the probe is moved upwards relative to the sensor.

[0035] Figure 10 This is another embodiment of the detection sensor in this utility model;

[0036] Figure 11 This is a block diagram illustrating the detection principle of the current transfer device in the electromagnetic system of the circuit breaker of this utility model.

[0037] Explanation of component labels in the diagram:

[0038] 10. Solder joints;

[0039] 20. Testing base;

[0040] 21. Second connecting hole; 22. Countersunk hole; 23. Through groove;

[0041] 30. Fixed frame;

[0042] 31. Crossbeam section; 32. Support leg section; 33. First connecting hole;

[0043] 40. Probe mechanism;

[0044] 41. Detection probe; 411. Probe head; 412. Arc surface; 413. Vertical plane; 414. Limiting step; 415. Recess;

[0045] 42. Elastic component; 421. Compression spring;

[0046] 43. Detection sensor; 431. Displacement photoelectric sensor; 432. Linear Hall sensor;

[0047] 44. Magnet;

[0048] 50. Lifting mechanism;

[0049] 51. Lifting drive source; 52. Main mounting plate; 53. Lifting connecting block; 531. Vertical plate section; 532. Horizontal plate section; 54. Linear guide rail mechanism;

[0050] 60. Gripper mechanism;

[0051] 61. Opening and closing drive source; 62. Mechanical gripper; 621. Movable clamping plate; 622. Gripper body; 623. Gripper liner;

[0052] 70. Circuit breaker electromagnetic system;

[0053] 71. Iron core; 72. Coil; 73. Terminal block; 74. Arc-starting plate;

[0054] 80. Pallet. Detailed Implementation

[0055] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0056] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0057] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0058] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0059] This application provides a welding defect product screening device and a transfer device for a circuit breaker electromagnetic system integrating the welding defect product screening device. The welding defect product screening device is used to detect whether the weld points 10 on the welded parts are qualified, and is suitable for various welded parts produced in batches by automated welding production lines. In the following embodiments, the welded parts are used as examples. Figure 6 The circuit breaker electromagnetic system 70 shown is used as an example for explanation. The circuit breaker electromagnetic system 70 can be the electromagnetic system of various miniature circuit breakers.

[0060] like Figure 5 and Figure 6 As shown, the circuit breaker electromagnetic system 70 mainly includes an iron core 71, a coil 72 wound on the iron core 71, a terminal frame 73, and an arc-starting plate 74. One end of the coil 72 is welded and fixed to the terminal frame 73, and the other end of the coil 72 is welded and fixed to the arc-starting plate 74. Therefore, the circuit breaker electromagnetic system 70 has two solder points 10: one between the coil 72 and the terminal frame 73, and the other between the coil 72 and the arc-starting plate 74. These two solder points 10 are the detection points of the circuit breaker electromagnetic system 70. Figure 7 and Figure 8 As shown, weld point 10 has a thickness of 'a' in the horizontal direction and a width of 'b' in the vertical direction. Due to the influence of external current, cold start of the welding machine, and other factors, the welding effect of weld point 10 in the circuit breaker electromagnetic system 70 is directly reflected in the thickness of weld point 10. On qualified products of the electromagnetic system, weld point 10 is thinner and has a smaller thickness, while on defective products of the electromagnetic system, weld point 10 is thicker and has a larger thickness.

[0061] like Figure 1 , Figure 2 and Figure 6As shown, the welding defect screening equipment provided in this application includes a liftable detection base 20, a fixed frame 30 fixed to the top of the detection base 20, and a probe mechanism 40. The probe mechanism 40 includes a detection probe 41 that is movably installed in the detection base 20, an elastic member 42, and a detection sensor 43 fixed to the detection base 20. The elastic member 42 is located between the fixed frame 30 and the detection probe 41 and applies a downward force to the detection probe 41. The lower end of the detection probe 41 is provided with a probe contact head 411, which extends downward from the bottom of the detection base 20.

[0062] Taking the detection part of the circuit breaker electromagnetic system 70 as an example Figure 6 Taking the solder joint 10 between coil 72 and arc-starting plate 74 in the view as an example: In the initial state, the welding abnormality product screening equipment, such as... Figure 1 , Figure 2 and Figure 6 As shown, the detection base 20 is not lowered, and the detection probes 41 are distributed above the weld points 10 in the welded product of the circuit breaker electromagnetic system 70. At the same time, the position of the detection probes 41 in the thickness direction of the weld points 10 should meet the following requirements: when the weld points 10 on the welded part are qualified, the probe head 411 and the weld points 10 are exactly offset in the thickness direction of the weld points 10; when the weld points 10 on the welded part are unqualified, the probe head 411 and the weld points 10 should at least partially overlap in the thickness direction of the weld points 10.

[0063] During testing, the testing base 20 moves down to a set position, and the fixing frame 30 and probe mechanism 40 move down together with the testing base 20. When the circuit breaker electromagnetic system 70 is a qualified product with acceptable solder joint 10, the downward movement distance of the testing base 20 should meet the following requirements: the probe contact head 411 at the lower end of the testing probe 41 should at least move downward past the upper edge of the solder joint 10, preferably moving the probe contact head down to the distance corresponding to the width b of the solder joint 10 below the electromagnetic system welding product; for example, when the width b of the solder joint 10 is 4mm, in the state where the probe contact head 411 is misaligned with the solder joint 10, after the testing base 20 moves down, it can move the probe contact head 411 down to a position 4mm below the upper edge of the solder joint 10; based on this, if Figure 7 As shown, because the solder joint 10 is relatively thin, the probe contact head 411 at the lower end of the detection probe 41 is offset from the solder joint 10 in the thickness direction of the solder joint 10. Therefore, after the detection probe 41 moves downwards with the detection base 20, the probe contact head 411 will not contact the solder joint 10, and no pressure will be generated to push the detection probe 41 upwards. At this time, the relative position between the detection probe 41 and the detection sensor 43 remains unchanged, and the detection sensor 43 will not be triggered. When the circuit breaker electromagnetic system 70 is a defective product with an unqualified solder joint 10, such as... Figure 8As shown, since the solder joint 10 is relatively thick, the probe tip 411 overlaps with the solder joint 10 at least partially in the thickness direction of the solder joint 10. Therefore, after the detection probe 41 moves downwards along with the detection base 20, the lower end of the probe tip 411 contacts the solder joint 10, preventing the detection probe 41 from moving further downwards and generating an upward pressing force. At this time, the detection probe 41 moves upwards relative to the detection base 20, that is, the detection probe 41 moves upwards relative to itself. The relative position between the detection probe 41 and the detection sensor 43 changes, and the detection sensor 43 is triggered. Thus, based on the output of the detection sensor 43, it is possible to accurately detect whether the solder joint 10 is qualified, thereby accurately screening out products with welding defects in the circuit breaker electromagnetic system 70.

[0064] Obviously, the welding defect screening equipment involved in this application detects and screens out welding defective products by contacting the weld point 10 of the welding defective product with the detection probe 41. Its detection method is simple, easy for operators to understand and operate, and has a low risk of misjudgment. The overall structure is simple and the cost is low. It is also highly applicable and can be used for the inspection of welding quality in various welded products. Therefore, the welding defect screening equipment involved in this application can detect and screen out welding defective products in a low-cost, simple, and reliable manner. It is well-suited for full inspection of welded products produced in batches using automated production processes, accurately screening out defective products with abnormal weld points 10 from batches of automated welded products.

[0065] Furthermore, to better adapt the aforementioned welding defect screening equipment to the automated welding production line of the circuit breaker electromagnetic system, this application also provides a transfer device for the circuit breaker electromagnetic system 70. This transfer device is a carrier on the automated welding production line of the circuit breaker electromagnetic system, used for transferring welded products of the circuit breaker electromagnetic system 70. Figure 1 and Figure 2 As shown, the transfer fixture of the circuit breaker electromagnetic system 70 involved in this application includes a lifting mechanism 50, a gripper mechanism 60, and the welding defect product screening device described above. The lifting mechanism 50 includes a lifting drive source 51 and a main mounting plate 52 that is pulsatorically connected to the lifting drive source 51. The gripper mechanism 60 includes an opening and closing drive source 61 mounted on the main mounting plate 52 and a pair of mechanical grippers 62 that are pulsatorically connected to the opening and closing drive source 61. The pair of mechanical grippers 62 are used to grip the circuit breaker electromagnetic system 70. The detection base 20 is fixedly connected to the opening and closing drive source 61. Of course, in other embodiments, the detection base 20 may also be fixedly connected to the main mounting plate 52. In this way, the welding defect product screening device is installed as a whole on the transfer fixture, and the power for lifting the detection base 20 comes from the lifting mechanism 50 of the transfer fixture.

[0066] In the automated mass production of circuit breaker electromagnetic systems 70 on the automatic welding production line, after welding is completed, the transfer fixture moves as a whole to directly above the welded circuit breaker electromagnetic system 70 product, such as... Figure 4 As shown. In the initial state, the main mounting plate 52 of the transfer fixture is not lowered, and a pair of mechanical grippers 62 are in the open state. When transferring the welded products of the circuit breaker electromagnetic system 70, firstly, the lifting drive source 51 is activated, driving the main mounting plate 52 to move down to the set position. Then, the detection base 20, the fixing frame 30, and the probe mechanism 40 move down together. During the downward movement, the automatic detection of whether the weld points 10 on the welded products of the circuit breaker electromagnetic system 70 are qualified is completed, that is, the automatic screening of welded abnormal products in the welded products of the circuit breaker electromagnetic system 70 is completed during the downward movement. Afterward, the opening and closing drive source 61 is activated, driving a pair of mechanical grippers 62 to move towards each other and close, realizing the clamping of the welded products of the circuit breaker electromagnetic system 70 by the transfer fixture and transferring them to the next processing station.

[0067] Obviously, the transfer equipment of the circuit breaker electromagnetic system 70 involved in this application integrates a welding defect product screening device, which is less affected by the working environment of the automatic welding production line. When transferring the welding products of the circuit breaker electromagnetic system 70, defective products in the welding products of the circuit breaker electromagnetic system 70 are screened out, thus ensuring the quality of the circuit breaker electromagnetic system 70.

[0068] Furthermore, the preferred structure of the lifting mechanism 50 is as follows: Figure 1 , Figure 2 and Figure 4 As shown, the lifting drive source 51 is a cylinder, and the piston rod of the cylinder can extend and retract vertically. The lifting mechanism 50 also includes a lifting connecting block 53 and a vertically extending linear guide mechanism 54. The lifting connecting block 53 has an L-shaped structure and includes a vertical plate portion 531 and a horizontal plate portion 532 connected to the lower end of the vertical plate portion 531. The linear guide mechanism 54 is connected between the vertical plate portion 531 and the cylinder body of the lifting drive source 51. The lower end of the piston rod of the cylinder of the lifting drive source 51 is connected to the horizontal plate portion 532, and the horizontal plate portion 532 is fixed to the top surface of the main mounting plate 52. When the piston rod of the cylinder of the lifting drive source 51 retracts upward, neither the lifting connecting block 53 nor the main mounting plate 52 moves downward. When the piston rod of the cylinder of the lifting drive source 51 extends downward, the main mounting plate 52 is driven downward through the lifting connecting block 53, and the linear guide mechanism 54 plays its guiding role, so that the lifting connecting block 53 and the main mounting plate 52 move up and down stably.

[0069] Furthermore, the preferred structure of the gripper mechanism 60 is as follows: Figure 1 , Figure 2 and Figure 4As shown, the opening / closing drive source 61 is a double-piston rod cylinder. The piston rod of this double-piston rod cylinder can extend and retract horizontally. A pair of mechanical grippers 62 are respectively connected to the piston rod of the cylinder of the opening / closing drive source 61. Each mechanical gripper 62 includes a movable clamping plate 621, a gripper body 622, and a gripper liner 623. The movable clamping plate 621 is fixedly connected to the piston rod of the cylinder of the opening / closing drive source 61. The gripper body 622 is fixed to the lower end of the movable clamping plate 621. The gripper liner 623 is fixed to the inner wall of the lower end of the gripper body 622 and is used to contact the tray 80 described below. When the piston rod of the cylinder of the opening / closing drive source 61 extends horizontally, the pair of mechanical grippers 62 are in the open state; when the piston rod of the cylinder of the opening / closing drive source 61 retracts horizontally, the pair of mechanical grippers 62 are in the closed state.

[0070] Preferably, the number of gripper mechanisms 60 is configured according to actual needs; in this embodiment, for example... Figure 1 , Figure 2 and Figure 4 As shown, two gripper mechanisms 60 are configured and mounted side-by-side on the bottom of the main mounting plate 52. Furthermore, each gripper mechanism 60 has a pair of mechanical grippers 62 capable of simultaneously gripping multiple circuit breaker electromagnetic system 70 welding products; for example: Figure 5 As shown, the circuit breaker electromagnetic system 70 welding products are arranged in a two-row, multi-column array. Each pair of circuit breaker electromagnetic system 70 welding products is supported on a tray 80. A pair of mechanical grippers 62 can hold the outer sides of adjacent trays 80, enabling the gripping and transfer of the circuit breaker electromagnetic system 70 welding products within the trays 80. In this way, the transfer fixture can simultaneously transfer eight circuit breaker electromagnetic system 70 welding products, improving efficiency.

[0071] Furthermore, the preferred structure of the welding defect product screening equipment is as follows: Figure 1 , Figure 2 and Figure 4 As shown, based on the array arrangement of the welded products of the circuit breaker electromagnetic system 70, there are multiple fixed frames 30 and probe mechanisms 40. The arrangement of the multiple probe mechanisms 40 is the same as the arrangement of the welded products of the circuit breaker electromagnetic system 70, so the multiple probe mechanisms 40 are arranged in a matrix array. The elastic components 42 in two probe mechanisms 40 in the same column abut against the same fixed frame 30, so the multiple fixed frames 30 are spaced apart in the horizontal direction. Preferably, the elastic component 42 is a compression spring 421.

[0072] Furthermore, there are multiple ways for the detection sensor 43 to detect whether the detection probe 41 has moved upwards. Based on different detection methods, the detection sensor 43 can select different types of sensors. Several preferred detection embodiments are provided below.

[0073] Example 1 of detection, such as Figure 6As shown, the detection sensor 43 is a displacement photoelectric sensor 431, which is arranged horizontally opposite to the detection probe 41. The end face of the detection probe 41 facing the displacement photoelectric sensor 431 has an arc-shaped surface 412 and a vertical plane 413 connected vertically. When the detection probe 41 is in its initial position, as shown... Figure 6 As shown, the arc surface 412 is directly opposite the displacement photoelectric sensor 431; after the detection probe 41 moves upward relative to it, as... Figure 9 As shown, the vertical plane 413 faces the displacement photoelectric sensor 431. The arc-shaped surface 412 creates a recess 415 on the detection probe 41 at that location. Therefore, the horizontal distance between the arc-shaped surface 412 and the displacement photoelectric sensor 431 is greater than the horizontal distance between the vertical plane 413 and the displacement photoelectric sensor 431. Thus, when picking up a circuit breaker electromagnetic system 70 welding product with acceptable solder joint 10, the detection probe 41 will not move upwards relative to the displacement photoelectric sensor 431; the arc-shaped surface 412 will always face the displacement photoelectric sensor 431, and the output of the displacement photoelectric sensor 431 will remain unchanged. When picking up a circuit breaker electromagnetic system 70 welding product with unacceptable solder joint 10, such as... Figure 8 and Figure 9 As shown, the detection probe 41 moves upward relative to the displacement photoelectric sensor 431 due to contact with the solder joint 10. The vertical plane 413 then faces the displacement photoelectric sensor 431, causing a change in the output of the displacement photoelectric sensor 431. Therefore, by setting an arc surface 412 and a vertical plane 413 on the detection probe 41, the displacement photoelectric sensor 431 determines whether the horizontal distance between itself and the detection probe 41 has changed, thus determining whether the detection probe 41 has moved upward relative to the solder joint 10, and consequently, whether the solder joint 10 is qualified.

[0074] Example 2 of detection Figure 10 As shown, the detection sensor 43 is a linear Hall sensor 432, and the probe mechanism 40 also includes a magnet 44 fixed to the detection probe 41. The linear Hall sensor 432 can sense the magnet 44. Thus, when picking up a circuit breaker electromagnetic system 70 product with a qualified solder joint 10, the detection probe 41 and the magnet 44 will not move upwards relative to each other, so the relative position between the magnet 44 and the linear Hall sensor 432 will not change, and the output of the linear Hall sensor 432 will remain unchanged. When picking up a circuit breaker electromagnetic system 70 product with a defective solder joint 10, the detection probe 41 moves the magnet 44 upwards together, so the relative position between the magnet 44 and the linear Hall sensor 432 changes, and the output of the linear Hall sensor 432 changes. Therefore, by detecting whether the height of the magnet 44 changes through the linear Hall sensor 432, it is determined whether the detection probe 41 has moved upwards relative to the other, thereby determining whether the solder joint 10 is qualified.

[0075] In the third embodiment of the detection method, the detection sensor 43 is a photoelectric sensor, arranged horizontally opposite the detection probe 41. The end face of the detection probe 41 facing the photoelectric sensor has a reflective part and a non-reflective part arranged side-by-side. In its initial position, the reflective part of the detection probe 41 faces the photoelectric sensor. After the detection probe 41 moves upwards, the non-reflective part faces the photoelectric sensor. Thus, when picking up a circuit breaker electromagnetic system 70 product with a qualified solder joint 10, the detection probe 41 will not move upwards; the reflective part will always face the photoelectric sensor, and the output of the photoelectric sensor remains unchanged. When picking up a circuit breaker electromagnetic system 70 product with an unqualified solder joint 10, the detection probe 41 moves upwards, and the non-reflective part faces the photoelectric sensor, causing the output of the photoelectric sensor to change. Therefore, the output of the photoelectric sensor directly determines whether the detection probe 41 has moved upwards, thereby determining whether the solder joint 10 is qualified.

[0076] Furthermore, such as Figure 1 , Figure 2 and Figure 4 As shown, the fixed frame 30 includes a crossbeam 31 and support legs 32 that are connected to both ends of the crossbeam 31 and extend downward. The support legs 32 are fixed to the top surface of the detection base 20 by fastening bolts. The crossbeam 31 is distributed above the detection base 20. The crossbeam 31 has a first hole with its opening facing downward at the part that is directly opposite each detection probe 41. The upper part of the detection probe 41 has a second hole with its opening facing upward. Both the first hole and the second hole are blind holes. The upper and lower ends of the compression spring 421 are respectively housed in the first hole and the second hole, so that the compression spring 421 is more stably abutted between the crossbeam 31 of the fixed frame 30 and the detection probe 41.

[0077] Preferably, such as Figure 1 , Figure 3 and Figure 6 As shown, the upper end of the detection probe 41 is provided with a limiting step 414 distributed above the detection base 20. Under the action of the compression spring 421, the limiting step 414 abuts against the top surface of the detection base 20, restricting the detection probe 41 from falling out of the detection base 20, while allowing the detection probe 41 to move upward relative to the detection base 20.

[0078] Furthermore, such as Figure 1 and Figure 2As shown, the support leg 32 has a first connecting hole 33 that mates with the fastening bolt, and the detection base 20 has a second connecting hole 21 that mates with the fastening bolt, and a countersunk hole 22 for accommodating the head of the fastening bolt. The first connecting hole 33, the second connecting hole 21, and the countersunk hole 22 are connected sequentially from top to bottom. The diameter of the first connecting hole 33 is smaller than the diameter of the second connecting hole 21. When using the fastening bolt to fix the support leg 32 and the detection base 20, the fastening bolt is screwed into the countersunk hole 22, the second connecting hole 21, and the first connecting hole 33 sequentially from bottom to top. Since the diameter of the first connecting hole 33 is smaller than the diameter of the second connecting hole 21, if the fastening bolt is not tightened, the position of the fixing frame 30 in the thickness direction of the weld point 10 can be manually fine-tuned. This allows the spring 421 to fine-tune the horizontal position of the detection probe 41 in the thickness direction of the weld point 10, so that the probe contact 411 is exactly offset from the edge of the qualified weld point 10. Therefore, along the thickness direction of the solder joint 10, the width of the through groove 23 in the detection base 20 that accommodates the detection probe 41 should be slightly larger than the width of the detection probe 41, so as to allow the detection probe 41 to be finely adjusted in the through groove 23 in the thickness direction of the solder joint 10.

[0079] Furthermore, such as Figure 11 As shown, the welding defect product screening equipment also includes a controller and an alarm. Both the detection sensor 43 and the alarm are connected to the controller. When the controller detects and screens out welding defective products based on feedback from the detection sensor 43, the controller triggers the alarm to alert operators to manually inspect the production line and troubleshoot the corresponding equipment malfunction. The alarm can be a buzzer, an alarm light, or a display screen, and the alarm method can be audible, flashing light, or text display.

[0080] The following provides specific application examples of this application.

[0081] Inspection object: Weld point 10 of the electromagnetic system 70 welding product of the circuit breaker. The maximum width of weld point 10 is 4mm.

[0082] The detection sensor 43 is a displacement photoelectric sensor 431.

[0083] The transfer device grips the tray 80 to transfer the welded products of the circuit breaker electromagnetic system 70 within the tray 80 to the next process. During the process of the transfer device gripping the tray 80, the lifting drive source 51 drives the detection base 20, the fixing frame 30, and the detection probe 41 to move downwards together. When the weld 10 is qualified, the final stroke of the detection probe 41 is 4mm below the welded product of the circuit breaker electromagnetic system 70. At this time, the alarm is not triggered, and the production line operates normally. When the weld 10 is unqualified, the lower end of the detection probe 41 contacts the weld 10, and with the downward movement of the detection base 20, the detection probe 41 moves upwards relatively, the compression spring 421 is further compressed, and the displacement photoelectric sensor 431 is triggered. At this time, the controller triggers the alarm, and then the welding equipment at the welding station of the production line stops. The operator performs manual inspection and troubleshoots the corresponding equipment fault information.

[0084] Furthermore, the relationship between weld joint thickness and welding quality shear force is shown in the table below.

[0085] Solder joint thickness a Welding quality shear force Test judgment conclusion Remark 4.1mm 100N~400N Unqualified High risk 3.7mm 300N~600N Unqualified Medium risk 3.3mm 600N~900N qualified Low risk 2.9mm 800N~1200N qualified Low risk

[0086] In summary, this application uses a combination of detection probe 41 and displacement photoelectric sensor 431 to detect the thickness of weld point 10 on the welded product of circuit breaker electromagnetic system 70, determine whether weld point 10 is qualified, and thus determine the welding effect at weld point 10.

[0087] In addition, to ensure the pass rate and false judgment rate of the welded products of the circuit breaker electromagnetic system 70, the horizontal position of the detection probe 41 in the thickness direction of the weld point 10 can be manually adjusted according to the product characteristics. For example, although the weld point 10 with a thickness of 3.3mm in the table above is qualified, in order to tighten the inspection, the product can be required to be welded according to the weld point 10 with a thickness of less than 3.2mm.

[0088] In summary, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0089] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A welding anomaly product screening apparatus for detecting whether a weld (10) on a welded article is acceptable, characterized by: The welding defect product screening device includes a liftable detection base (20), a fixed frame (30) fixed to the detection base (20), and a probe mechanism (40). The probe mechanism (40) includes a detection probe (41) that is movable up and down in the detection base (20), an elastic component (42) disposed between the fixed frame (30) and the detection probe (41), and a detection sensor (43) fixed to the detection base (20). The lower end of the detection probe (41) is provided with a probe contact head (411) that extends downward from the detection base (20). When the weld point (10) on the welded part is qualified, the probe contact head (411) and the weld point (10) are offset in the thickness direction of the weld point (10); When the weld point (10) on the welded part is unqualified, the probe head (411) and the weld point (10) overlap at least partially in the thickness direction of the weld point (10), and the probe head (411) can contact the weld point (10) and trigger the detection sensor (43).

2. The weld anomaly product screening apparatus of claim 1, wherein: The detection sensor (43) is a displacement photoelectric sensor (431) and is arranged horizontally opposite to the detection probe (41). The end face of the detection probe (41) facing the displacement photoelectric sensor (431) is provided with an arc surface (412) and a vertical plane (413) connected vertically. When the detection probe (41) is in its initial position, the arc surface (412) is directly facing the displacement photoelectric sensor (431); after the detection probe (41) moves upward, the vertical plane (413) is directly facing the displacement photoelectric sensor (431).

3. The welding defect product screening equipment according to claim 1, characterized in that: The detection sensor (43) is a linear Hall sensor (432), and the probe mechanism (40) further includes a magnet (44) fixed to the detection probe (41). The linear Hall sensor (432) can sense the magnet (44).

4. The welding defect product screening equipment according to claim 1, characterized in that: The fixed frame (30) includes a crossbeam (31) and support legs (32) connected to both ends of the crossbeam (31). The support legs (32) are fixedly connected to the detection base (20). The crossbeam (31) is distributed above the detection base (20) and has a first hole. The upper part of the detection probe (41) has a second hole. The upper and lower ends of the elastic member (42) are respectively accommodated in the first hole and the second hole.

5. The welding defect product screening equipment according to claim 1 or 4, characterized in that: The elastic component (42) is a compression spring (421).

6. The welding defect product screening equipment according to claim 4, characterized in that: The support leg (32) is fixed to the detection base (20) by fastening bolts. The support leg (32) is provided with a first connecting hole (33) that cooperates with the fastening bolts. The detection base (20) is provided with a second connecting hole (21) that cooperates with the fastening bolts and a countersunk hole (22) for accommodating the head of the fastening bolts. The diameter of the first connecting hole (33) is smaller than the diameter of the second connecting hole (21).

7. The welding defect product screening equipment according to claim 1, characterized in that: The upper end of the detection probe (41) is provided with a limiting step (414) distributed above the detection base (20), and the limiting step (414) can abut against the top surface of the detection base (20).

8. The welding defect product screening equipment according to claim 1, characterized in that: There are multiple probe mechanisms (40), and the multiple probe mechanisms (40) are arranged in a matrix array.

9. The welding defect product screening equipment according to claim 1, characterized in that: It also includes a controller and an alarm, both of which are connected to the controller.

10. A transfer device for a circuit breaker electromagnetic system, comprising a lifting mechanism (50) and a gripper mechanism (60), wherein the lifting mechanism (50) comprises a lifting drive source (51) and a main mounting plate (52) pulsatorically connected to the lifting drive source (51), and the gripper mechanism (60) comprises an opening / closing drive source (61) mounted on the main mounting plate (52) and a pair of mechanical grippers (62) pulsatorically connected to the opening / closing drive source (61), wherein the pair of mechanical grippers (62) are used to grip the circuit breaker electromagnetic system (70), characterized in that: It also includes the welding abnormality product screening device according to any one of claims 1-9, wherein the detection base (20) is fixedly connected to the main mounting plate (52) or the opening and closing drive source (61).

11. The transfer device for the electromagnetic system of a circuit breaker according to claim 10, characterized in that: The lifting drive source (51) is a cylinder. The lifting mechanism (50) also includes a lifting connecting block (53) and a vertically extending linear guide mechanism (54). The lifting connecting block (53) includes a vertical plate portion (531) and a horizontal plate portion (532) connected to the lower end of the vertical plate portion (531). The linear guide mechanism (54) is connected between the vertical plate portion (531) and the cylinder body of the lifting drive source (51). The lower end of the cylinder piston rod of the lifting drive source (51) is connected to the horizontal plate portion (532). The horizontal plate portion (532) is fixed on the top surface of the main mounting plate (52).

12. The transfer device for the electromagnetic system of a circuit breaker according to claim 10, characterized in that: The opening and closing drive source (61) is a double piston rod cylinder, and a pair of mechanical grippers (62) are respectively connected to the cylinder piston rod of the opening and closing drive source (61).

13. The transfer device for the electromagnetic system of a circuit breaker according to claim 10, characterized in that: The mechanical gripper (62) includes a movable clamping plate (621), a gripper body (622), and a gripper liner (623). The movable clamping plate (621) is connected to the opening and closing drive source (61). The gripper body (622) is fixed at the lower end of the movable clamping plate (621), and the gripper liner (623) is fixed on the inner wall at the lower end of the gripper body (622).

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