Automatic assembly line for circuit breaker with leakage protection function

Abstract

The present application relates to the technical field of assembly production line, and more particularly to a circuit breaker automatic assembly production line with leakage protection function. Specifically comprising a conveying device, a circuit breaker body production line and a release production line, the circuit breaker body production line is used for splitting the circuit breaker shell into an upper cover, a large partition plate and a bottom cover, and assembling a magnetic system, a thermal system, a circuit breaker wiring frame, an adjusting screw, a handle operating mechanism and the large partition plate on the bottom cover to form a bottom shell semi-finished product. The release production line comprises an upper contact support device, an indicating element coil device, a magnetic ring connecting plate device, a semi-finished product overlay welding device, a circuit board welding device, a semi-finished product welding device and a finished product cover combining device. The conveying device is used for transferring the bottom cover to each work station in turn, transferring the large partition plate to the work station for assembling the handle operating mechanism, and transferring the upper cover to the work station of the finished product cover combining device. The feeding, assembling and welding of the circuit breaker are automatically completed, and the production efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of assembly line technology, and in particular to an automatic assembly line for circuit breakers with leakage protection function. Background Technology

[0002] Circuit breakers (air switches) are indispensable safety protection devices in low-voltage power distribution systems, especially circuit breakers with leakage protection (RCBO, i.e. miniature circuit breakers with leakage protection). Their internal structure is complex, including multiple precision components such as electromagnetic systems, thermal tripping systems, arc extinguishing systems, and leakage detection modules.

[0003] Currently, some automated equipment exists in the assembly of miniature circuit breakers. However, most of this equipment is modular stand-alone or specialized for specific processes (such as welding or assembly only), for example, equipment using a rotary table structure to weld electromagnetic trip components. However, when multi-process flow, assembly of irregularly shaped parts, and complex welding processes (such as connecting leakage protection modules or welding bimetallic strips) are involved, significant manual intervention is still required for loading and unloading, inter-process transfers, and posture adjustments, resulting in a high reliance on manual assistance. This is especially true for certain compact circuit breakers with complex internal layouts (such as those integrating leakage protection modules), which cannot be fully automated in a single production line, increasing the degree of manual involvement and reducing production efficiency and product quality. Summary of the Invention

[0004] The purpose of this invention is to provide an automated assembly line for circuit breakers with leakage protection function, so as to automatically complete the production process of circuit breaker feeding, assembly and welding, thereby improving the production efficiency and product quality of circuit breakers.

[0005] To achieve this objective, the technical solution adopted by the present invention is as follows: An automatic assembly line for circuit breakers with leakage protection includes a conveying device, a circuit breaker body production line, and a trip unit production line. The circuit breaker body production line is used to disassemble the circuit breaker housing into a top cover, a large partition, and a bottom cover, and to assemble a magnetic system, a thermal system, a circuit breaker wiring frame, adjusting screws, a handle operating mechanism, and the large partition on the bottom cover to form a bottom shell semi-finished product. The trip unit production line includes, in sequence, an upper contact support device, an indicator coil device, a magnetic ring connecting plate device, a semi-finished product welding device, a circuit board welding device, a semi-finished product welding device, and a finished product closing device. The upper contact support device assembles the upper contact support assembly onto the bottom shell semi-finished product. The indicator coil device assembles the indicator coil assembly onto the bottom shell semi-finished product. The magnetic ring connecting plate device assembles the magnetic ring, magnetic ring connecting plate, and trip unit wiring frame onto the bottom shell semi-finished product. The semi-finished product welding device welds the magnetic ring to the magnetic ring connecting plate and the magnetic ring connecting plate to the trip unit wiring frame. The circuit board welding device welds the circuit board to the enameled wire and assembles the welded circuit board onto the bottom shell semi-finished product. The semi-finished product welding device solders the parts to be welded inside the bottom shell semi-finished product. The finished product closing device assembles the top cover onto the large partition to form the finished product. The conveying device is used to sequentially transfer the bottom cover to each station of the circuit breaker body production line and the trip unit production line, transfer the large partition to the station of assembling the handle operating mechanism in the circuit breaker body production line, and transfer the top cover to the station where the finished product closing device is located.

[0006] As an optional solution for an automated assembly line for circuit breakers with leakage protection, the upper contact support device includes: A contact support transfer mechanism includes a contact support conveyor belt assembly and a contact support carrier. The contact support conveyor belt assembly drives the contact support carrier to move between multiple contact support assembly stations. The contact support carrier is used to carry the bottom shell semi-finished product and the contact support assembly. Some of the contact support assembly stations are equipped with contact support feeding mechanisms. Each contact support feeding mechanism feeds the corresponding long shaft, short shaft, contact plate and cover plate of the contact support assembly and assembles them into the bottom shell semi-finished product in the contact support carrier. Another part of the contact support assembly station is equipped with a contact support pre-assembly mechanism to feed the upper connecting rod, tension spring and contact support body of the contact support assembly into the contact support carrier and assemble them into a contact support assembly, and then assemble the contact support assembly into the bottom shell semi-finished product.

[0007] As an optional solution for an automated assembly line for circuit breakers with leakage protection, the contact support carrier is provided with a first positioning groove and a second positioning groove. The bottom shell semi-finished product is positioned in the first positioning groove, and the upper connecting rod is positioned in the second positioning groove. The contact support body is assembled to the upper connecting rod through a corresponding contact support pre-assembly mechanism, and the tension spring is assembled to the contact support body through a corresponding contact support pre-assembly mechanism, so as to assemble the upper connecting rod, the contact support body, and the tension spring into a contact support assembly. The contact support assembly is then assembled to the bottom shell semi-finished product through the corresponding contact support pre-assembly mechanism.

[0008] As an optional solution for an automated assembly line for circuit breakers with leakage current protection, the indicator coil device includes: An indicator coil transfer mechanism includes an indicator coil conveyor belt assembly and an indicator coil carrier. The indicator coil conveyor belt assembly drives the indicator coil carrier to move between multiple indicator coil assembly stations. The indicator coil carrier is used to carry the bottom shell semi-finished product and the indicator coil assembly. Some indicator coil assembly stations are equipped with indicator coil feeding mechanisms. Multiple indicator coil feeding mechanisms respectively feed and assemble the corresponding push rods, indicators, integrated coils, connecting pieces and springs in the indicator coil assembly into the bottom shell semi-finished product in the indicator coil carrier. Another part of the indicator coil assembly station is equipped with an indicator coil pre-assembly mechanism to load the indicator, indicator spring, button and button spring in the indicator coil assembly into the indicator coil carrier, and to pre-assemble the indicator and indicator spring, the button and button spring into the bottom shell semi-finished product.

[0009] As an optional solution for an automated assembly line for circuit breakers with leakage protection, a secondary pressing station is provided after the indicator coil assembly station where the button is assembled to the bottom shell semi-finished product, along the transport direction of the indicator coil carrier. The indicator coil device further includes a pressing mechanism, which is located at the secondary pressing station to perform secondary pressing and positioning of the connecting piece and the spring piece assembled to the bottom shell semi-finished product.

[0010] As an optional solution for an automated assembly line for circuit breakers with leakage protection, the magnetic ring connecting plate device includes: A magnetic ring connecting plate transfer mechanism includes a magnetic ring connecting plate conveyor belt assembly and a magnetic ring connecting plate carrier. The magnetic ring connecting plate conveyor belt assembly drives the magnetic ring connecting plate carrier to move between multiple magnetic ring connecting plate assembly stations. The magnetic ring connecting plate carrier is used to carry the bottom shell semi-finished product. Multiple magnetic ring connecting plate loading mechanisms are provided at intervals along the transport direction of the magnetic ring connecting plate carrier. The multiple magnetic ring connecting plate loading mechanisms respectively load the corresponding magnetic ring, magnetic ring connecting plate and trip unit wiring frame into the magnetic ring connecting plate carrier. Each of the magnetic ring connecting plate assembly stations is equipped with a magnetic ring connecting plate assembly mechanism to assemble the corresponding magnetic ring, the magnetic ring connecting plate and the trip unit wiring frame into the bottom shell semi-finished product in the magnetic ring connecting plate carrier.

[0011] As an optional solution for an automated assembly line for circuit breakers with leakage protection, the semi-finished product welding device includes: A welding transfer mechanism includes a welding conveyor belt assembly and a welding carrier. The welding conveyor belt assembly drives the welding carrier to move between multiple welding stations. The welding carrier is used to carry the bottom shell semi-finished product. At least two welding mechanisms are spaced apart along the transport direction of the welding carrier to weld the magnetic ring to the magnetic ring connecting plate and the magnetic ring connecting plate to the trip unit wiring frame, respectively.

[0012] As an optional solution for an automated assembly line for circuit breakers with leakage current protection, the circuit board welding device includes: A circuit board transfer mechanism includes a circuit board conveyor belt assembly and a circuit board carrier. The circuit board conveyor belt assembly drives the circuit board carrier to move between multiple circuit board soldering stations. The circuit board carrier is used to carry circuit boards. Along the transport direction of the circuit board carrier, there are circuit board loading mechanism, enameled wire loading mechanism, enameled wire pre-assembly mechanism, circuit board welding mechanism, and circuit board unloading mechanism arranged at intervals. The circuit board loading mechanism is used to load the circuit board onto the circuit board carrier. The enameled wire loading mechanism is used to load the enameled wire onto the circuit board carrier. The enameled wire pre-assembly mechanism is used to pre-assemble the enameled wire in the circuit board carrier onto the circuit board. The circuit board welding mechanism is used to weld the pre-assembled enameled wire to the circuit board. The circuit board unloading mechanism is used to assemble the circuit board with the welded enameled wire onto the bottom shell semi-finished product located in the conveying device.

[0013] As an optional solution for an automated assembly line for circuit breakers with leakage protection, the circuit board carrier is equipped with an auxiliary clamping mechanism. The auxiliary clamping mechanism is used to clamp and position the enameled wire fed onto the circuit board carrier so that the enameled wire is pre-installed at the soldering position of the circuit board.

[0014] As an optional solution for an automated assembly line for circuit breakers with leakage current protection, the conveying device includes: A ground conveying device is used to sequentially transfer the bottom cover to each workstation of the circuit breaker body production line and the trip unit production line. An overhead conveyor is used to transfer the large partition to the station where the handle operating mechanism is assembled and to transfer the top cover to the station where the finished product closing device is located.

[0015] The beneficial effects of this invention are as follows: The automatic assembly line for circuit breakers with leakage current protection proposed in this invention includes a conveying device, a circuit breaker body production line, and a trip unit production line. The circuit breaker body production line disassembles the circuit breaker housing into a top cover, a large partition, and a bottom cover. A magnetic system, a thermal system, a circuit breaker terminal block, adjusting screws, a handle operating mechanism, and the large partition are assembled on the bottom cover to form a semi-finished bottom shell, i.e., the circuit breaker body. The trip unit production line includes, in sequence, an upper contact support device, an indicator coil device, a magnetic ring connecting plate device, a semi-finished product welding device, a circuit board welding device, a semi-finished product welding device, and a finished product closing device. By assembling the trip unit and the top cover on the bottom shell semi-finished product, the bottom shell semi-finished product, the trip unit, and the top cover are assembled into the finished product. The automatic assembly line for circuit breakers with leakage current protection, through the coordinated operation of the conveying device, the circuit breaker body production line, and the trip unit production line, automatically completes the production process of circuit breaker feeding, assembly, and welding without manual intervention, improving the production efficiency and product quality of the circuit breakers. Attached Figure Description

[0016] Figure 1 This is a layout diagram of an automated assembly line for circuit breakers with leakage protection provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of the upper contact support device provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the indicator coil device provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the magnetic ring connecting plate device provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the semi-finished product overlay welding device provided in an embodiment of the present invention; Figure 6This is a schematic diagram of the circuit board welding device provided in an embodiment of the present invention.

[0017] The component names and labels in the diagram are as follows: 1. Shell disassembly device; 2. Arc extinguishing chamber and magnetic system device; 3. Thermal system and junction box device; 4. Adjusting screw device; 5. Bimetallic pre-adjustment device; 6. Handle operating mechanism device; 7. Upper contact support device; 71. Contact support conveyor belt assembly; 72. Contact support carrier; 73. Contact support pre-loading mechanism; 741. Upper connecting rod feeding mechanism; 742. Long shaft feeding mechanism; 743. Short shaft feeding mechanism; 744. Tension spring feeding mechanism; 745. Contact support body feeding mechanism; 746. Contact plate feeding mechanism; 747. Cover plate feeding mechanism; 8. Indicator coil device; 81. Indicator coil conveyor belt assembly; 82. Indicator coil carrier; 83. Indicator coil pre-loading mechanism; 84. Pressing mechanism; 851. Push rod feeding mechanism; 852. Indicator feeding mechanism; 853. Integrated coil feeding mechanism; 854. Indicator spring feeding mechanism; 855. Button feeding mechanism; 856. Connecting piece feeding mechanism; 857. Button spring feeding mechanism; 858. Spring piece feeding mechanism; 9. Magnetic ring connecting plate device; 91. Magnetic ring connecting plate conveyor belt assembly; 92. Magnetic ring connecting plate carrier; 93. Magnetic ring connecting plate assembly mechanism; 94. Magnetic ring feeding mechanism; 95. Connecting plate feeding mechanism; 96. Trip unit wiring frame feeding mechanism; 10. Semi-finished product overlay welding device; 101. Overlay welding conveyor belt assembly; 102. Overlay welding carrier; 103. Overlay welding mechanism; 11. Circuit board soldering device; 111. Circuit board conveyor belt assembly; 112. Circuit board carrier; 113. Circuit board loading mechanism; 114. Enamelled wire loading mechanism; 115. Circuit board soldering mechanism; 116. Circuit board unloading mechanism; 118. Enamelled wire pre-assembly mechanism; 12. Semi-finished product welding device; 13. Finished product capping device; 14. Ground conveying device; 15. Overhead conveying device; 20. CCD inspection mechanism; 30. NG conveying mechanism. Detailed Implementation

[0018] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. Furthermore, it should be noted that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings, not all of them.

[0019] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0022] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] Currently, some automated equipment exists in the assembly of miniature circuit breakers. However, most of this equipment is modular stand-alone or specialized for specific processes (such as welding or assembly only), for example, equipment using a rotary table structure to weld electromagnetic trip components. However, when multi-process flow, assembly of irregularly shaped parts, and complex welding processes (such as connecting leakage protection modules or welding bimetallic strips) are involved, significant manual intervention is still required for loading and unloading, inter-process transfers, and posture adjustments, resulting in a high reliance on manual assistance. This is especially true for certain compact circuit breakers with complex internal layouts (such as those integrating leakage protection modules), which cannot be fully automated in a single production line, increasing the degree of manual involvement and reducing production efficiency and product quality.

[0024] To solve the above problems, such as Figure 1As shown, this embodiment proposes an automated assembly line for circuit breakers with leakage current protection. The automated assembly line includes a conveying device, a circuit breaker body production line, and a trip unit production line. The circuit breaker body production line is used to disassemble the circuit breaker housing into an upper cover, a large partition, and a bottom cover. A magnetic system, a thermal system, a circuit breaker terminal block, adjusting screws, a handle operating mechanism, and the large partition are assembled on the bottom cover to form a bottom shell semi-finished product. The trip unit production line includes an upper contact support device 7, an indicator coil device 8, a magnetic ring connecting plate device 9, a semi-finished product welding device 10, a circuit board welding device 11, a semi-finished product welding device 12, and a finished product closing device 13, arranged sequentially at intervals. The upper contact support device 7 is used to assemble the upper contact support assembly onto the bottom shell semi-finished product. The indicator coil device 8 is used to assemble the indicator coil assembly onto the bottom shell semi-finished product. The magnetic ring connecting plate device 9 is used to assemble the magnetic ring, the magnetic ring connecting plate, and the trip unit terminal block onto the bottom shell semi-finished product. The semi-finished product welding device 10 is used to weld the magnetic ring to the magnetic ring connecting plate and the magnetic ring connecting plate to the trip unit wiring frame. The circuit board welding device 11 is used to weld the circuit board to the enameled wire and assemble the welded circuit board onto the bottom shell semi-finished product. The semi-finished product welding device 12 is used to solder the parts to be welded inside the bottom shell semi-finished product. The finished product cover assembly device 13 is used to assemble the top cover onto the large partition to assemble the finished product. The conveying device is used to sequentially transfer the bottom cover to each station of the circuit breaker body production line and the trip unit production line, transfer the large partition to the station for assembling the handle operating mechanism in the circuit breaker body production line, and transfer the top cover to the station where the finished product cover assembly device 13 is located.

[0025] The circuit breaker body production line is used to disassemble the circuit breaker housing into a top cover, a large partition, and a bottom cover. The magnetic system, thermal system, circuit breaker terminal frame, adjusting screws, handle operating mechanism, and large partition are then assembled on the bottom cover to form a semi-finished bottom cover, i.e., the circuit breaker body. The trip unit production line includes, in sequence, an upper contact support device 7, an indicator coil device 8, a magnetic ring connecting plate device 9, a semi-finished product welding device 10, a circuit board welding device 11, a semi-finished product welding device 12, and a finished product cover assembly device 13. By assembling the trip unit and top cover on the bottom cover semi-finished product, the bottom cover semi-finished product, the trip unit, and the top cover are assembled into the finished product. The automatic assembly production line for circuit breakers with leakage protection function, through the coordinated operation of the conveyor device, the circuit breaker body production line, and the trip unit production line, automatically completes the production process of circuit breaker feeding, assembly, and welding without manual intervention, improving the production efficiency and product quality of circuit breakers.

[0026] It should be noted that the automated assembly line for circuit breakers with leakage current protection in this embodiment is mainly applied to small-volume leakage current products, especially miniature circuit breakers with leakage current protection. A miniature circuit breaker with leakage current protection includes a circuit breaker body and a trip unit. The circuit breaker body includes a base, arc guide plate, partition plate, thermal system (operating mechanism), magnetic system, arc-extinguishing chamber, adjusting screw, large U-shaped element, small U-shaped element, connecting rod, handle, handle torsion spring, rocker arm, circuit breaker wiring frame, and large partition plate. The trip unit includes an integrated coil, push rod, indicator, indicator spring, button, button spring, PCB board, trip unit wiring frame, magnetic ring connecting plate, spring, connecting piece, magnetic ring, enameled wire, contact support, long shaft, short shaft, upper connecting rod, tension spring, and cover plate. The finished circuit breaker is formed by riveting the circuit breaker body, trip unit, and top cover together.

[0027] like Figure 1 As shown, the conveying device includes a ground conveying device 14 and an overhead conveying device 15. The ground conveying device 14 is used to sequentially transfer the bottom cover to each station of the circuit breaker body production line and the trip unit production line. The overhead conveying device 15 is used to transfer the large partition to the station for assembling the handle operating mechanism and to transfer the top cover to the station where the finished product cover assembly device 13 is located. The ground conveying device 14 realizes the transfer of the bottom cover to each station of the entire automatic assembly production line for circuit breakers with leakage protection function. Using the bottom cover as the installation base, the automatic assembly of the bottom cover, bottom shell semi-finished product, and finished product is realized. The overhead conveying device 15 transfers the large partition to the circuit breaker body production line and the top cover to the trip unit production line, realizing the independent transfer of the large partition and the top cover, improving the transfer efficiency.

[0028] Specifically, the ground conveyor 14 uses a conveyor belt and / or chain plate conveying method to transfer the bottom cover (or bottom shell semi-finished product, finished product) between various workstations. The overhead conveyor 15 is set above the ground conveyor 14. This overhead arrangement avoids affecting the layout of various feeding devices, assembly devices, etc., in the automatic assembly production line for circuit breakers with leakage protection, making the layout of the automatic assembly production line for circuit breakers with leakage protection more reasonable and compact, thus optimizing the overall layout. The overhead conveyor 15 can also use a conveyor belt and / or chain plate conveying method. The overhead conveyor 15 also includes a buffer conveyor belt and a tilting mechanism to buffer the large partition and tilt the large partition and the top cover, thereby adjusting the feeding posture of the large partition and the top cover. Since the buffer conveyor belt and the tilting mechanism are existing technologies, their structure and working process will not be described in detail.

[0029] like Figure 1As shown, the circuit breaker body production line includes a shell-removing device 1, an arc-extinguishing chamber and magnetic system device 2, a thermal system and terminal block device 3, an adjusting screw device 4, a bimetallic pre-adjustment device 5, and a handle operating mechanism device 6, arranged sequentially at intervals. The casing is fed to the shell-removing device 1 via a conveyor belt, and its feeding posture is adjusted so that the shell is disassembled into a top cover, a large partition, and a bottom cover. Then, the top cover, large partition, and bottom cover are all assembled with magnetic guide plates and arc-extinguishing wall assemblies. Finally, the bottom cover, after assembling the magnetic guide plates and arc-extinguishing wall assemblies, forms a bottom shell semi-finished product, which is transferred to the next station, the arc-extinguishing chamber and magnetic system device 2, via a ground conveyor device 14. The arc-extinguishing chamber and magnetic system device 2 is used to sequentially assemble the arc-extinguishing chamber and magnetic system onto the bottom shell. The thermal system and circuit breaker terminal block device is used to sequentially assemble the thermal system and circuit breaker terminal block onto the bottom shell semi-finished product. The adjusting screw device 4 is used to assemble screws and nuts into a combination, and then assemble the combination onto the bottom shell semi-finished product. The bimetallic pre-adjustment device 5 is used to adjust the installation angle of the bimetallic strip in the thermal system relative to the bottom shell. The handle operating mechanism device 6 is used to assemble the handle operating mechanism and the large partition plate to the bottom shell semi-finished product. The equipment used in the feeding and assembly processes of each component in the circuit breaker body production line can refer to existing circuit breaker body production lines.

[0030] Each assembly station on the circuit breaker production line includes a CCD inspection mechanism 20 and an NG transmission mechanism. The CCD inspection mechanism 20 detects whether the components installed at each station are properly installed and whether there are any quality problems such as missing or incorrect installations, thus ensuring assembly accuracy and quality. The NG transmission mechanism 30 separates unqualified bottom shell semi-finished products from the conveyor belt of the ground conveyor device 14. Since both the CCD inspection mechanism 20 and the NG transmission mechanism 30 are existing technologies, they will not be described in detail here.

[0031] like Figure 2 As shown, the upper contact support device 7 includes a contact support transfer mechanism, a contact support feeding mechanism, and a contact support pre-assembly mechanism 73. The contact support transfer mechanism includes a contact support conveyor belt assembly 71 and a contact support carrier 72. The contact support conveyor belt assembly 71 drives the contact support carrier 72 to move between multiple contact support assembly stations. The contact support carrier 72 is used to carry the bottom shell semi-finished product and the contact support assembly. Some contact support assembly stations are equipped with contact support feeding mechanisms, each of which feeds the corresponding long shaft, short shaft, contact plate, and cover plate from the contact support assembly and assembles them into the bottom shell semi-finished product in the contact support carrier 72. Other contact support assembly stations are equipped with contact support pre-assembly mechanisms 73, which feed the upper connecting rod, tension spring, and contact support body from the contact support assembly into the contact support carrier 72 and assemble them into contact support assemblies, and then assemble the contact support assemblies into the bottom shell semi-finished product.

[0032] The contact support conveyor assembly 71 includes a drive component and an annular chain plate. The drive component drives the annular chain plate to rotate. Multiple contact support carriers 72 are arranged in the annular chain plate so that each contact support carrier 72 moves between multiple contact support assembly stations (the annular chain plate rotates clockwise, with a total of thirty-two stations). A handling robot is installed at the upper contact support device 7. The handling robot grabs two bottom shell semi-finished products that have passed through the handle operating mechanism device 6 and places them into the contact support carriers 72 of the annular chain plate. Multiple contact support feeding mechanisms are arranged at intervals around the annular chain plate and include an upper connecting rod feeding mechanism 741, a long shaft feeding mechanism 742, a short shaft feeding mechanism 743, a tension spring feeding mechanism 744, a contact support body feeding mechanism 745, a contact plate feeding mechanism 746, and a cover plate feeding mechanism 747, to feed the corresponding upper connecting rod, long shaft, short shaft, tension spring, contact support body, contact plate, and cover plate into the contact support carrier 72 at their respective workstations. Among them, the long shaft feeding mechanism 742, the short shaft feeding mechanism 743, the contact plate feeding mechanism 746, and the cover plate feeding mechanism 747 directly assemble the corresponding long shaft, short shaft, contact plate, and cover plate into the bottom shell semi-finished product inside the contact support carrier 72. The upper connecting rod feeding mechanism 741, the tension spring feeding mechanism 744, and the contact support body feeding mechanism 745 respectively feed the upper connecting rod, the tension spring, and the contact support body into the contact support carrier 72. The contact support pre-assembly mechanism 73 can be an assembly robot, which pre-assembles the upper connecting rod, the tension spring, and the contact support body in the contact support carrier 72, and then assembles the pre-assembled parts into the bottom shell semi-finished product in the contact support carrier 72.

[0033] The working process of the upper contact support device 7 is as follows: After the bottom shell semi-finished product is transferred to the semi-finished product loading position at the upper contact support device 7 via the ground conveyor device 14, two bottom shell semi-finished products are picked up by the handling robot and placed on the contact support carrier 72 at one station of the circular chain plate line. At station six, the contact support body is automatically loaded by a palletizer. The contact support body is placed in the contact support carrier 72. The contact support body is fed by a pallet. The pallet is provided to the picking position by a palletizing and disassembling method. The loading robot picks up the contact support body from the pallet and puts it into the corresponding contact support carrier 72. The empty pallet is transferred to the return conveyor belt of the contact support body loading mechanism 745 so as to carry the contact support body again, realizing the cyclic loading. At station seven, the upper connecting rod is automatically assembled (the connecting rod is automatically fed by a vibratory feeder), that is, the connecting rod is assembled into the contact support carrier 72 located at station seven. At station eight, the long shaft is automatically assembled (the long shaft is automatically fed by a vibratory feeder), that is, the long shaft is assembled into the bottom shell semi-finished product located in the contact support carrier 72 at station eight. At station nine, the contact support body, which has been transferred to the contact support carrier 72 at station nine, is pre-installed onto the upper connecting rod. At station ten, the short shaft is automatically assembled (the short shaft is automatically fed by a vibratory feeder), that is, the short shaft is assembled into the bottom shell semi-finished product located in the contact support carrier 72 at station ten. At stations eleven and twelve, the tension spring is automatically assembled (the tension spring is automatically fed by a vibratory feeder), and the tension spring is assembled into the contact support carrier 72 located at station ten; at stations sixteen and eighteen, the upper connecting rod, contact support, and tension spring are assembled into a contact support assembly, and the contact support assembly is installed into the bottom shell assembly. At station 19, the contact plate is automatically assembled (the contact plate is fed by a vibratory feeder), that is, the contact plate is assembled into the bottom shell semi-finished product in the contact support carrier 72 located at station 19. At station 20, the assembled bottom shell semi-finished product is visually inspected by the CCD detection mechanism 20. At station 21, the cover plate is automatically assembled (the cover plate is automatically fed by a vibratory feeder), that is, the cover plate is assembled into the bottom shell semi-finished product in the contact support carrier 72 located at station 21. At station 24, the bottom shell semi-finished product is inspected by the CCD detection mechanism 20 to determine if it is qualified; at station 26, the handling robot grabs the bottom shell semi-finished product and returns it to the transmission belt of the ground conveyor 14. If there is any unqualified bottom shell semi-finished product, it is grabbed by the handling robot and placed on the conveyor belt of the NG conveyor mechanism 30. The above-mentioned stations refer to the stations surrounding the annular chain plate in the contact support conveyor belt assembly 71.

[0034] In this embodiment, the contact support carrier 72 is provided with a first positioning groove and a second positioning groove. The bottom shell semi-finished product is positioned in the first positioning groove, and the upper connecting rod is positioned in the second positioning groove. The contact support body is assembled to the upper connecting rod through a corresponding contact support pre-assembly mechanism 73, and the tension spring is assembled to the contact support body through the corresponding contact support pre-assembly mechanism 73, so as to assemble the upper connecting rod, the contact support body, and the tension spring into a contact support assembly. The contact support assembly is then assembled to the bottom shell semi-finished product through the corresponding contact support pre-assembly mechanism 73. By providing the first positioning groove in the contact support carrier 72 to limit the bottom shell semi-finished product, the various components of the contact support assembly are accurately assembled onto the bottom shell semi-finished product, thereby improving the assembly accuracy and assembly quality. By providing the second positioning groove to accurately pre-position the upper connecting rod, the contact support body, and the tension spring, the pre-assembly accuracy and pre-assembly quality of the pre-assembled contact support assembly are improved.

[0035] like Figure 3 As shown, the indicator coil device 8 includes an indicator coil transfer mechanism, an indicator coil loading mechanism, and an indicator coil pre-assembly mechanism 83. The indicator coil transfer mechanism includes an indicator coil conveyor belt assembly 81 and an indicator coil carrier 82. The indicator coil conveyor belt assembly 81 drives the indicator coil carrier 82 to move between multiple indicator coil assembly stations. The indicator coil carrier 82 is used to carry the bottom shell semi-finished product and the indicator coil assembly. Some indicator coil assembly stations are equipped with indicator coil loading mechanisms. The multiple indicator coil loading mechanisms respectively load and assemble the corresponding push rods, indicators, integrated coils, connecting pieces, and springs from the indicator coil assembly into the bottom shell semi-finished product in the indicator coil carrier 82. Another part of the indicator coil assembly station is equipped with an indicator coil pre-assembly mechanism 83, which loads the indicator, indicator spring, button and button spring in the indicator coil assembly into the indicator coil carrier 82, and pre-assembles the indicator and indicator spring, the button and button spring into the bottom shell semi-finished product.

[0036] The indicator coil conveyor belt assembly 81 includes a drive component and an annular chain plate. The drive component drives the annular chain plate to rotate. Multiple indicator coil carriers 82 are arranged in the annular chain plate so that each indicator coil carrier 82 flows between multiple indicator coil assembly stations (the annular chain plate rotates counterclockwise, with a total of twenty-six stations). A handling robot is provided at the indicator coil device 8. The handling robot picks up two bottom shell semi-finished products that have passed through the upper contact support device 7 and places them into the indicator coil carriers 82 on the annular chain plate. Multiple indicator coil feeding mechanisms are arranged at intervals around the annular chain plate and include a push rod feeding mechanism 851, an indicator feeding mechanism 852, an integrated coil feeding mechanism 853, an indicator spring feeding mechanism 854, a button feeding mechanism 855, a connecting piece feeding mechanism 856, a button spring feeding mechanism 857, and a spring feeding mechanism 858, to feed the corresponding push rod, indicator, integrated coil, indicator spring, button, connecting piece, button spring, and spring to the indicator coil carrier 82 at their respective workstations. Among them, the push rod feeding mechanism 851, the integrated coil feeding mechanism 853, the connecting piece feeding mechanism 856, and the spring feeding mechanism 858 directly assemble the corresponding push rod, integrated coil, connecting piece, and spring into the bottom shell semi-finished product inside the indicator coil carrier 82. The indicator coil pre-assembly mechanism 83 can be an assembly robot, which can pre-assemble the indicator, indicator spring, button, and button spring in the indicator coil carrier 82, and then assemble the pre-assembled parts into the bottom shell semi-finished product in the indicator coil carrier 82.

[0037] The working process of the indicator coil device 8 is as follows: After the bottom shell semi-finished product is transferred to the semi-finished product loading position of the indicator coil device 8 via the ground conveyor device 14, two bottom shell semi-finished products are picked up by the handling robot and placed on the indicator coil carrier 82 at station one of the circular chain conveyor lines. Automatic assembly of the push rod (fed via a vibratory feeder) is achieved at station two, that is, the push rod is assembled into the bottom shell semi-finished product in the indicator coil carrier 82 at station two. Automatic assembly of the indicator (fed via a vibratory feeder) is achieved at station five, that is, the indicator is assembled into the indicator coil carrier 82 at station five. Automatic assembly of the integrated coil (fed via a pallet) is achieved at station eight, that is, the integrated coil is assembled into the bottom shell semi-finished product in the indicator coil carrier 82 at station eight. At station ten, the automatic assembly of the indicator spring (fed via a vibratory feeder) is performed, assembling the indicator spring into the indicator coil carrier 82 located at station ten. The pre-assembled indicator and indicator spring are then assembled into the bottom shell semi-finished product within the indicator coil carrier 82. At station twelve, the automatic assembly of the button (fed via a vibratory feeder) is performed, assembling the button into the indicator coil carrier 82 located at station twelve. At station fourteen, the automatic assembly of the connecting piece (fed via a vibratory feeder) is performed, assembling the connecting piece into the bottom shell semi-finished product within the indicator coil carrier 82 located at station fourteen. At station fifteen, the automatic assembly of the button spring (fed via a vibratory feeder) is performed, assembling the button spring into the button within the indicator coil carrier 82 located at station fifteen. At station eighteen, the automatic assembly of the spring piece is performed, assembling the spring piece into the bottom shell semi-finished product within the indicator coil carrier 82 located at station eighteen. At station 20, the pre-assembled button and button spring are reassembled into the semi-finished base shell within the indicator coil carrier 82. At station 21, the connecting piece and spring are re-pressed into place. At station 22, the CCD detection mechanism 20 checks for missing parts or improper installation. At station 24, a handling robot picks up the semi-finished base shell and places it onto the conveyor belt of the ground conveyor device 14; if there are any defective products, they are picked up by the handling robot and placed onto the conveyor belt of the NG conveyor mechanism 30. The aforementioned stations refer to the stations surrounding the annular chain plate in the indicator coil conveyor belt assembly 81.

[0038] In this embodiment, a secondary pressing station is provided along the transport direction of the indicator coil carrier 82, after the indicator coil assembly station where the button is assembled to the bottom shell semi-finished product. The indicator coil device 8 also includes a pressing mechanism 84, which is located at the secondary pressing station to perform secondary pressing and positioning of the connecting piece and the spring piece assembled to the bottom shell semi-finished product. The secondary pressing mechanism 84 is provided at the secondary pressing station (i.e., the aforementioned station twenty-one). By performing secondary pressing and positioning of the connecting piece and the spring piece through the secondary pressing mechanism 84, the assembly of the connecting piece and the spring piece is ensured to be in place, thereby improving the assembly quality.

[0039] Specifically, the secondary pressing mechanism 84 can be a cylinder and a pressure plate. The output end of the cylinder is connected to the pressure plate so that the connecting piece and the spring piece can be pressed and positioned secondary by the pressure plate.

[0040] like Figure 4 As shown, the magnetic ring connecting plate device 9 includes a magnetic ring connecting plate transfer mechanism, a magnetic ring connecting plate loading mechanism, and a magnetic ring connecting plate assembly mechanism 93. The magnetic ring connecting plate transfer mechanism includes a magnetic ring connecting plate conveyor belt assembly 91 and a magnetic ring connecting plate carrier 92. The magnetic ring connecting plate conveyor belt assembly 91 drives the magnetic ring connecting plate carrier 92 to move between multiple magnetic ring connecting plate assembly stations. The magnetic ring connecting plate carrier 92 is used to carry the bottom shell semi-finished product. Multiple magnetic ring connecting plate loading mechanisms are arranged at intervals along the transfer direction of the magnetic ring connecting plate carrier 92. The multiple magnetic ring connecting plate loading mechanisms respectively load the corresponding magnetic ring, magnetic ring connecting plate, and trip unit wiring frame into the magnetic ring connecting plate carrier 92. Each magnetic ring connecting plate assembly station is provided with a magnetic ring connecting plate assembly mechanism 93 to assemble the corresponding magnetic ring, magnetic ring connecting plate, and trip unit wiring frame into the bottom shell semi-finished product in the magnetic ring connecting plate carrier 92.

[0041] The magnetic ring connecting plate conveyor belt assembly 91 includes a drive component and an annular chain plate. The drive component drives the annular chain plate to rotate. Multiple magnetic ring connecting plate carriers 92 are arranged in the annular chain plate so that each magnetic ring connecting plate carrier 92 flows between multiple magnetic ring connecting plate assembly stations (the annular chain plate rotates clockwise, with a total of eight stations). A handling robot is provided at the magnetic ring connecting plate device 9. The handling robot grabs two semi-finished bottom shells that have passed through the indicator coil device 8 and places them into the magnetic ring connecting plate carrier 92 of the annular chain plate. Multiple magnetic ring connecting plate feeding mechanisms are arranged at intervals around the annular chain plate and include a magnetic ring feeding mechanism 94, a connecting plate feeding mechanism 95, and a trip unit wiring frame feeding mechanism 96, so as to transfer the corresponding magnetic ring, magnetic ring connecting plate, and trip unit wiring frame to the feeding position at their respective stations. The magnetic ring connecting plate assembly mechanism 93 can be an assembly robot, which is used to grasp the parts at their respective feeding positions and assemble the parts into the bottom shell semi-finished product inside the magnetic ring connecting plate carrier 92.

[0042] The working process of the magnetic ring connecting plate device 9 is as follows: After the semi-finished bottom shell is transferred to the semi-finished product loading position of the magnetic ring connecting plate device 9 via the ground conveyor 14, two semi-finished bottom shells are picked up by the handling robot and placed on the magnetic ring connecting plate carrier 92 at station one of the circular chain conveyor lines. Automatic assembly of the magnetic rings (fed via a pallet) is achieved at station two, assembling the magnetic rings into the semi-finished bottom shells in the magnetic ring connecting plate carrier 92 at station two. Automatic assembly of the magnetic ring connecting plates (fed via a vibratory feeder) is achieved at station four, assembling the magnetic ring connecting plates into the semi-finished bottom shells in the magnetic ring connecting plate carrier 92 at station four. Automatic assembly of the trip unit wiring frame (fed via a vibratory feeder) is achieved at station six, assembling the trip unit wiring frame into the semi-finished bottom shells in the magnetic ring connecting plate carrier 92 at station six. At station seven, the CCD detection mechanism 20 checks whether the magnetic rings, magnetic ring connecting plates, and trip unit wiring frames are properly installed and whether any parts are missing. At station eight, a handling robot grabs the bottom shell semi-finished product onto the conveyor belt of the ground conveyor device 14; if there are any defective products, they are grabbed by the handling robot onto the conveyor belt of the NG conveyor mechanism 30. The aforementioned stations refer to the stations surrounding the annular chain plate in the magnetic ring connecting plate conveyor belt assembly 91.

[0043] like Figure 5 As shown, the semi-finished product cladding welding device 10 includes a cladding welding transfer mechanism, which includes a cladding welding conveyor belt assembly 101 and a cladding welding carrier 102. The cladding welding conveyor belt assembly 101 drives the cladding welding carrier 102 to move between multiple cladding welding stations. The cladding welding carrier 102 is used to carry the bottom shell semi-finished product. At least two cladding welding mechanisms 103 are spaced apart along the transfer direction of the cladding welding carrier 102 to weld the magnetic ring and the magnetic ring connecting plate, and the magnetic ring connecting plate and the trip unit wiring frame, respectively.

[0044] The welding conveyor assembly 101 includes a drive unit and a turntable. The drive unit drives the turntable to rotate, and multiple welding carriers 102 are arranged in the turntable so that each welding carrier 102 flows between multiple welding assembly stations (the turntable rotates clockwise, with a total of six stations). A handling robot is provided at the welding device. The handling robot grabs two bottom shell semi-finished products that have passed through the handle operating mechanism 6 and places them in the welding carrier 102 of the turntable. At least two welding feeding mechanisms are arranged at intervals around the turntable to weld the magnetic ring and magnetic ring connecting plate, and the magnetic ring connecting plate and trip unit wiring frame at their respective stations. In this embodiment, three welding mechanisms 103 are provided. The first welding mechanism 103 is used to weld the magnetic ring and magnetic ring connecting plate, the second welding mechanism 103 is used to weld the magnetic ring connecting plate and trip unit wiring frame, and the third welding mechanism 103 can be used as a spare for welding operations at welding points in other types of circuit breakers.

[0045] Since the welding carrier 102 in this embodiment contains two semi-finished bottom shells, two semi-finished product welding devices 10 are provided to weld the two semi-finished bottom shells in the same welding carrier 102 respectively. The working process is described using one of the semi-finished product welding devices 10 as an example.

[0046] The working process of the semi-finished product welding device 10 is as follows: The semi-finished bottom shell is moved to the material picking position of the buffer conveyor belt via the ground conveyor device 14. A handling robot grabs two semi-finished bottom shells and places them onto the welding carrier 102 at one station of the turntable of the corresponding semi-finished product welding device 10. Welding is performed at station two for the first welding position, namely welding the magnetic ring and the magnetic ring connecting plate. In this embodiment, the trip unit wiring frame has a split structure, including a left wiring frame and a right wiring frame. Welding is performed at station three for the second welding position, namely welding the magnetic ring connecting plate to the left wiring frame of the trip unit wiring frame. Welding is performed at station four for the third welding position, namely welding the magnetic ring connecting plate to the right wiring frame of the trip unit wiring frame. The welding quality of the semi-finished bottom shell is inspected at station five by the CCD detection mechanism 20. At station six, the handling robot grabs the semi-finished bottom shell onto the conveyor belt of the ground conveyor device 14; if there are any defective products, they are grabbed by the handling robot onto the conveyor belt of the NG conveying mechanism 30.

[0047] like Figure 6 As shown, the circuit board soldering apparatus 11 includes a circuit board transfer mechanism, a circuit board loading mechanism 113, an enameled wire loading mechanism 114, an enameled wire pre-assembly mechanism 118, a circuit board soldering mechanism 115, and a circuit board unloading mechanism 116. The circuit board transfer mechanism includes a circuit board conveyor belt assembly 111 and a circuit board carrier 112. The circuit board conveyor belt assembly 111 drives the circuit board carrier 112 to move between multiple circuit board soldering stations. The circuit board carrier 112 is used to carry circuit boards. The circuit board loading mechanism 113, the enameled wire loading mechanism 114, the enameled wire pre-assembly mechanism 118, the circuit board soldering mechanism 115, and the circuit board unloading mechanism 116 are arranged at intervals along the transfer direction of the circuit board carrier 112. The circuit board loading mechanism 113 is used to load circuit boards onto the circuit board carrier 112, and the enameled wire loading mechanism 114 is used to load enameled wires onto the circuit board carrier 112. The enameled wire pre-assembly mechanism 118 is used to pre-assemble the enameled wires in the circuit board carrier 112 onto the circuit board. The circuit board soldering mechanism 115 is used to solder the pre-assembled enameled wires to the circuit board. The circuit board unloading mechanism 116 is used to assemble the circuit board with soldered enameled wires to the bottom shell semi-finished product located in the conveyor.

[0048] The circuit board conveyor assembly 111 includes a drive unit and an annular chain plate. The drive unit drives the annular chain plate to rotate. Multiple circuit board carriers 112 are arranged in the annular chain plate so that each circuit board carrier 112 moves between multiple circuit board soldering stations. A circuit board loading mechanism 113, an enameled wire loading mechanism 114, an enameled wire pre-assembly mechanism 118, a circuit board soldering mechanism 115, and a circuit board unloading mechanism 116 are arranged at intervals around the annular chain plate. The circuit board loading mechanism 113 and the enameled wire loading mechanism 114 respectively transfer circuit boards and enameled wires to the circuit board carriers 112 on the annular chain plate. The enameled wire pre-assembly mechanism 118 can be an assembly robot, used to grasp the enameled wires in the circuit board carrier 112 and pre-assemble them onto the circuit boards. The circuit board unloading mechanism 116 is a handling robot, which grasps two circuit boards with soldered enameled wires and assembles them onto the corresponding bottom shell semi-finished products located on the conveyor device.

[0049] The working process of the circuit board soldering device 11 is as follows: The semi-finished bottom shell is transferred to the lifting and auxiliary pressing position of the circuit board welding device 11 via the ground conveyor 14. On the circular chain plate, circuit boards are fed via pallets. The pallets carrying the circuit boards move to the picking position, where the circuit board loading mechanism 113 (such as a loading robot) grabs the circuit boards from the pallets and places them into the corresponding circuit board carriers 112. Empty pallets are transferred to the return conveyor belt of the circuit board loading mechanism 113 to carry circuit boards again, achieving cyclic loading. Automatic feeding of enameled wire is implemented at station four (enameled wire is fed via a vibratory feeder), assembling the enameled wire into the circuit board carriers 112 located at station four. At stations five, six, and seven, the enameled wire pre-assembly mechanism 118 grabs the enameled wire from the circuit board carriers 112 and pre-assembles it onto the circuit board. At station eight, the CCD detection mechanism 20 detects and identifies whether the enameled wire is pre-assembled correctly. At station ten, the circuit board welding mechanism 115 solders the first position of the enameled wire. At station 12, the second position of the enameled wire is soldered using the circuit board soldering mechanism 115. At station 15, the third position of the enameled wire is soldered using the circuit board soldering mechanism 115. At station 17, the soldering quality of the enameled wire is inspected and identified by the CCD inspection mechanism 20. At station 19, defective circuit board soldering products are rejected and sent to the NG conveyor belt. At station 20, the handling robot grabs the circuit board with soldered enameled wire from the circuit board carrier 112 at station 20 of the annular chain plate and loads it onto the bottom shell semi-finished product. For the bottom shell semi-finished product assembly with the circuit board assembly completed, the CCD inspection mechanism 20 determines whether it is installed correctly. If it is qualified, it is transferred to the next process; if it is not qualified, the defective product is rejected and sent to the NG conveyor belt.

[0050] Furthermore, the circuit board carrier 112 is equipped with an auxiliary clamping mechanism. This mechanism clamps and positions the enameled wire fed onto the circuit board carrier 112, pre-mounting the wire to the soldering position on the circuit board. The auxiliary clamping mechanism can be a cylinder and grippers (or clamping plates). The output end of the cylinder is connected to the grippers (or clamping plates) to drive them to clamp or release the enameled wire, preventing displacement. By providing this auxiliary clamping mechanism, the enameled wire to be soldered can be precisely pre-mounted onto the circuit board, achieving pre-mounting with limited positioning, thus improving the pre-mounting accuracy and soldering quality.

[0051] The semi-finished product welding device 12 is used to solder the parts to be soldered inside the semi-finished bottom shell. The semi-finished product welding device 12 includes a semi-finished product welding transfer mechanism, welding modules, a temperature controller, a fume extractor, and a fume extraction duct. The semi-finished product welding transfer mechanism includes a semi-finished product welding conveyor belt assembly and a semi-finished product welding carrier. The semi-finished product welding conveyor belt assembly drives the semi-finished product welding carrier to move between multiple semi-finished product welding stations. The semi-finished product welding carrier is used to carry the semi-finished bottom shell. Multiple welding modules are spaced apart along the transfer direction of the semi-finished product welding carrier to solder different welding positions on the bottom shell semi-finished product one by one. The temperature controller is used to detect and control the welding temperature. The fume extractor draws the welding fumes into the fume extraction duct and discharges them through the fume extraction duct to ensure the stable and reliable operation of the semi-finished product welding device 12. The welding modules are conventional welding equipment such as welding torches, and are not specifically limited here.

[0052] The working process of the semi-finished product welding device 12 is as follows: After the semi-finished bottom shell is transferred to the semi-finished product loading position at the magnetic ring connecting plate device 9 via the ground conveyor 14, two semi-finished bottom shells are picked up by a handling robot and placed on the magnetic ring connecting plate carrier 92 at one station of the circular chain conveyor line. (The circular chain conveyor line rotates clockwise and has a total of twenty-four stations). At station three, the first welding position of the semi-finished bottom shell is soldered using a welding module. At station five, the second welding position of the semi-finished bottom shell is soldered using a welding module. At station seven, the third welding position of the semi-finished bottom shell is soldered using a welding module. At station nine, the CCD inspection mechanism 20 checks whether the first, second, and third welding positions all meet the welding quality standards. At station eleven, the fourth welding position of the semi-finished bottom shell is soldered using a welding module. At station thirteen, the fifth welding position of the semi-finished bottom shell is soldered using a welding module. At station fifteen, the sixth welding position of the semi-finished bottom shell is soldered using a welding module. At station seventeen, the soldering module completes the soldering of the seventh welding position on the semi-finished bottom shell. At station eighteen, the screw removal function on the semi-finished bottom shell is implemented; at station nineteen, the soldering module completes the soldering of the eighth welding position on the semi-finished bottom shell. At stations twenty-one and twenty-three, the CCD inspection mechanism 20 inspects whether the fourth, fifth, sixth, seventh, and eighth welding positions meet the welding quality standards. At station twenty-three, the handling robot picks up the semi-finished bottom shell and places it onto the conveyor belt of the ground conveyor device 14. If any semi-finished bottom shell is defective, it is picked up by the handling robot and placed onto the conveyor belt of the NG conveyor mechanism 30. The aforementioned stations refer to the stations surrounding the annular chain plate in the semi-finished product welding conveyor belt assembly.

[0053] The finished product lid assembly device 13 is used to assemble the top cover onto the large partition of the bottom shell semi-finished product to form the finished product. Since the finished product lid assembly device is existing technology, the assembly process of the finished product lid assembly device and the top cover will not be described in detail.

[0054] The above embodiments merely illustrate the basic principles and characteristics of the present invention. The present invention is not limited to the above embodiments. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automated assembly line for circuit breakers with leakage current protection, characterized in that, The system includes a conveying device, a circuit breaker body production line, and a trip unit production line. The circuit breaker body production line is used to split the circuit breaker housing into a top cover, a large partition, and a bottom cover, and to assemble a magnetic system, a thermal system, a circuit breaker wiring frame, adjusting screws, a handle operating mechanism, and the large partition on the bottom cover to form a bottom shell semi-finished product. The trip unit production line includes an upper contact support device (7), an indicator coil device (8), a magnetic ring connecting plate device (9), a semi-finished product welding device (10), a circuit board welding device (11), a semi-finished product welding device (12), and a finished product closing device (13) arranged sequentially at intervals. The upper contact support device (7) is used to assemble the upper contact support assembly onto the bottom shell semi-finished product. The indicator coil device (8) is used to assemble the indicator coil assembly onto the bottom shell semi-finished product. The magnetic ring connecting plate device (9) is used to connect magnetic rings. The board and trip unit wiring frame are assembled on the bottom shell semi-finished product; the semi-finished product welding device (10) is used to weld the magnetic ring to the magnetic ring connecting plate and the magnetic ring connecting plate to the trip unit wiring frame; the circuit board welding device (11) is used to weld the circuit board to the enameled wire and assemble the welded circuit board on the bottom shell semi-finished product; the semi-finished product welding device (12) is used to solder the parts to be welded inside the bottom shell semi-finished product; the finished product cover device (13) is used to assemble the top cover on the large partition to assemble it into a finished product; The conveying device is used to sequentially transfer the bottom cover to each station of the circuit breaker body production line and the trip unit production line, transfer the large partition to the station of assembling the handle operating mechanism in the circuit breaker body production line, and transfer the top cover to the station where the finished product closing device (13) is located.

2. The automatic assembly line for circuit breakers with leakage protection function according to claim 1, characterized in that, The upper contact support device (7) includes: The contact support transfer mechanism includes a contact support conveyor belt assembly (71) and a contact support carrier (72). The contact support conveyor belt assembly (71) drives the contact support carrier (72) to move between multiple contact support assembly stations. The contact support carrier (72) is used to carry the bottom shell semi-finished product and the contact support assembly. Some of the contact support assembly stations are equipped with contact support feeding mechanisms. Each contact support feeding mechanism feeds the corresponding long shaft, short shaft, contact plate and cover plate of the contact support assembly and assembles them into the bottom shell semi-finished product in the contact support carrier (72). Another part of the contact support assembly station is equipped with a contact support pre-assembly mechanism (73) to feed the upper connecting rod, tension spring and contact support body in the contact support assembly into the contact support carrier (72) and assemble them into a contact support assembly, and then assemble the contact support assembly into the bottom shell semi-finished product.

3. The automatic assembly line for circuit breakers with leakage protection function according to claim 2, characterized in that, The contact support carrier (72) is provided with a first positioning groove and a second positioning groove. The bottom shell semi-finished product is placed in the first positioning groove, and the upper connecting rod is placed in the second positioning groove. The contact support body is assembled to the upper connecting rod through the corresponding contact support pre-assembly mechanism (73). The tension spring is assembled to the contact support body through the corresponding contact support pre-assembly mechanism (73) to assemble the upper connecting rod, the contact support body and the tension spring into a contact support assembly. The contact support assembly is assembled to the bottom shell semi-finished product through the corresponding contact support pre-assembly mechanism (73).

4. The automatic assembly line for circuit breakers with leakage protection function according to claim 1, characterized in that, The indicator coil device (8) includes: An indicator coil transfer mechanism includes an indicator coil conveyor belt assembly (81) and an indicator coil carrier (82). The indicator coil conveyor belt assembly (81) drives the indicator coil carrier (82) to move between multiple indicator coil assembly stations. The indicator coil carrier (82) is used to carry the bottom shell semi-finished product and the indicator coil assembly. Some indicator coil assembly stations are equipped with indicator coil feeding mechanisms. The multiple indicator coil feeding mechanisms respectively feed and assemble the corresponding push rods, indicators, integrated coils, connecting pieces and springs in the indicator coil assembly into the bottom shell semi-finished product in the indicator coil carrier (82). Another part of the indicator coil assembly station is equipped with an indicator coil pre-assembly mechanism (83) to load the indicator, indicator spring, button and button spring in the indicator coil assembly into the indicator coil carrier (82), and to pre-assemble the indicator and indicator spring, the button and button spring into the bottom shell semi-finished product.

5. The automatic assembly line for circuit breakers with leakage protection function according to claim 4, characterized in that, Along the transport direction of the indicator coil carrier (82), a secondary pressing station is provided after the indicator coil assembly station where the button is assembled to the bottom shell semi-finished product; The indicator coil device (8) further includes a pressing mechanism (84), which is located at the secondary pressing station to perform secondary pressing and positioning of the connecting piece and the spring piece assembled to the bottom shell semi-finished product.

6. The automatic assembly line for circuit breakers with leakage protection function according to claim 1, characterized in that, The magnetic ring connecting plate device (9) includes: A magnetic ring connecting plate transfer mechanism includes a magnetic ring connecting plate conveyor belt assembly (91) and a magnetic ring connecting plate carrier (92). The magnetic ring connecting plate conveyor belt assembly (91) drives the magnetic ring connecting plate carrier (92) to move between multiple magnetic ring connecting plate assembly stations. The magnetic ring connecting plate carrier (92) is used to carry the bottom shell semi-finished product. Multiple magnetic ring connecting plate feeding mechanisms are provided at intervals along the transfer direction of the magnetic ring connecting plate carrier (92). The multiple magnetic ring connecting plate feeding mechanisms respectively feed the corresponding magnetic ring, magnetic ring connecting plate and trip unit wiring frame into the magnetic ring connecting plate carrier (92). Each of the magnetic ring connecting plate assembly stations is provided with a magnetic ring connecting plate assembly mechanism (93) to assemble the corresponding magnetic ring, the magnetic ring connecting plate and the trip unit wiring frame into the bottom shell semi-finished product in the magnetic ring connecting plate carrier (92).

7. The automatic assembly line for circuit breakers with leakage protection function according to claim 1, characterized in that, The semi-finished product overlay welding device (10) includes: The welding transfer mechanism includes a welding conveyor belt assembly (101) and a welding carrier (102). The welding conveyor belt assembly (101) drives the welding carrier (102) to move between multiple welding stations. The welding carrier (102) is used to carry the bottom shell semi-finished product. At least two welding mechanisms (103) are spaced apart along the transport direction of the welding carrier (102) to weld the magnetic ring to the magnetic ring connecting plate and the magnetic ring connecting plate to the trip unit wiring frame, respectively.

8. The automatic assembly line for circuit breakers with leakage protection function according to claim 1, characterized in that, The circuit board welding device (11) includes: A circuit board transfer mechanism includes a circuit board conveyor belt assembly (111) and a circuit board carrier (112). The circuit board conveyor belt assembly (111) drives the circuit board carrier (112) to move between multiple circuit board soldering stations. The circuit board carrier (112) is used to carry circuit boards. Along the transfer direction of the circuit board carrier (112), there are circuit board loading mechanism (113), enameled wire loading mechanism (114), enameled wire pre-assembly mechanism (118), circuit board welding mechanism (115), and circuit board unloading mechanism (116). The circuit board loading mechanism (113) is used to load the circuit board onto the circuit board carrier (112). The enameled wire loading mechanism (114) is used to load the enameled wire onto the circuit board carrier (112). The enameled wire pre-assembly mechanism (118) is used to pre-assemble the enameled wire in the circuit board carrier (112) onto the circuit board. The circuit board welding mechanism (115) is used to weld the pre-assembled enameled wire to the circuit board. The circuit board unloading mechanism (116) is used to assemble the circuit board with the welded enameled wire onto the bottom shell semi-finished product located in the conveying device.

9. The automatic assembly line for circuit breakers with leakage protection function according to claim 8, characterized in that, The circuit board carrier (112) is provided with an auxiliary clamping mechanism, which is used to clamp and position the enameled wire fed to the circuit board carrier (112) so that the enameled wire is pre-installed at the soldering position of the circuit board.

10. The automatic assembly line for circuit breakers with leakage protection function according to any one of claims 1-9, characterized in that, The conveying device includes: Ground conveying device (14), the ground conveying device (14) is used to transfer the bottom cover to each station of the circuit breaker body production line and the trip unit production line in sequence; An overhead conveyor (15) is used to transfer the large partition to the work station for assembling the handle operating mechanism and to transfer the top cover to the work station where the finished cover closing device (13) is located.

Images