An automated assembly line for circuit breakers

Abstract

The application discloses a kind of automatic assembly production lines of circuit breaker, it is related to the technical field of automation equipment, can integrate each assembly link, optimize key process and realize the basic automation assembly solution of carrier circulation transport. Including carrier transport system, shell feeding device, multiple parts assembling device, detection mechanism and unloading device;Shell feeding device transports shell to the carrier on the work station of carrier transport system and makes shell locate in carrier, carrier is transported to corresponding work station by carrier transport system in subsequent each process;Through highly automated assembly process, manual intervention link is reduced, dependence on manpower is reduced, so as to reduce labor cost;At the same time, optimized assembly process and transport system design, reduce the product unqualified rate and equipment maintenance cost caused by assembly error, reduce the production cost of circuit breaker.

Description

Technical Field

[0001] This invention relates to the field of automation equipment technology, and in particular to an automated assembly production line for circuit breakers. Background Technology

[0002] In power systems, circuit breakers, as core devices ensuring the safe operation of circuits, undertake the critical functions of controlling and protecting circuits. Their structure is complex, mainly composed of basic modules such as the housing, operating mechanism, tripping mechanism, terminal block, and arc-extinguishing system. Looking closer, the internal components include numerous parts such as the handle, handle shaft, torsion spring, adjusting screw, trip latch, locking latch, metal plate, and arc-extinguishing chamber, with the number of parts reaching more than ten, or even twenty. Therefore, automating the assembly of a circuit breaker into a complete product using existing technologies presents significant challenges.

[0003] In the circuit breaker manufacturing industry, traditional assembly production methods mainly employ a decentralized workstation model, which has many inherent drawbacks. Existing technologies typically require each component to be loaded and assembled individually, resulting in fragmented production line processes with a lack of effective coordination between stages, making it difficult to form a coherent automated process. This discrete production method is not only inefficient but also prone to cumulative errors in assembly accuracy due to multiple positioning and transfers, especially for components requiring pre-fitting, such as torsion springs and jumper shafts.

[0004] In terms of component assembly, existing technologies often fail to consider the pre-assembly requirements of certain components. For example, metal plates and terminal blocks are interlocking parts; traditional methods use step-by-step material loading and separate installation, which not only increases assembly time but also easily affects product quality due to misalignment. A similar situation occurs in the assembly of adjusting plates and adjusting screws. Existing technologies typically use a method of loading the materials first and then screwing them in, rather than pre-completing the assembly of both. This leads to reduced mainline assembly efficiency and difficulty in coordinating workstation rhythms.

[0005] Furthermore, the assembly process for certain specialized components has not yet been effectively automated. Taking torsion springs as an example, while existing technology can complete the initial material loading, the subsequent tightening process still relies on manual operation, making it difficult to control the preload and tightening angle, which directly affects the operational reliability of the circuit breaker.

[0006] The design of the transportation system also has significant shortcomings. Existing production lines typically use chain-driven or belt-driven conveyor systems to achieve continuous, uniform speed operation. However, this is unsuitable for conveying vehicles that must remain stably stationary at workstations for sufficient time to operate on the semi-finished products on them, as chain-driven or belt-driven vehicles cannot achieve controllable and stable stops at workstations. If pneumatic or electric blocking devices are installed at each workstation requiring operation to forcibly stop the vehicle upon arrival, each workstation would require an additional blocking device and corresponding control unit, which would easily lead to a significant increase in system complexity and cost.

[0007] Overall, existing circuit breaker assembly technologies struggle to achieve efficient automated production due to issues such as fragmented processes, lack of assembly strategies, imperfect processes for special components, and design flaws in transportation systems. Summary of the Invention

[0008] The purpose of this invention is to overcome the shortcomings of the prior art. This invention provides an automated assembly production line for circuit breakers, which can integrate various assembly links, optimize key processes, and realize a basic automated assembly solution for cyclic transportation of carriers, so as to improve production efficiency and product consistency.

[0009] The technical solution of this invention includes a carrier transportation system, a shell loading device, multiple component assembly devices, a testing mechanism, and a unloading device. The carrier transportation system includes a transport vehicle. The shell loading device, multiple component assembly devices, the testing mechanism, and the unloading device are each positioned with a workstation aligned with the carrier transportation system. The shell loading device transports the shell to the corresponding workstation on the carrier transportation system and positions the shell on the carrier. In subsequent processes, the carrier is transported to the corresponding workstation via the carrier transportation system. The multiple component assembly devices include, sequentially arranged along the transport direction of the carrier transportation system, a torsion spring assembly device, a handle spring assembly device, an adjusting plate and adjusting screw assembly device, a manual assembly station, a jump catch and jump catch shaft assembly device, a handle shaft assembly device, a handle assembly device, a U-shaped rod assembly device, a locking shaft assembly device, a locking assembly device, a terminal block and metal sheet assembly device, and an arc-extinguishing chamber assembly device. The torsion spring assembly... The device is used for assembling and tightening torsion springs; the adjusting plate and adjusting screw assembly device is used to assemble the adjusting plate and adjusting screw after screwing them together; the manual assembly station is used by workers to assemble the corresponding parts that need to be installed by workers; the jumper and jumper shaft assembly device is used to install the jumper shaft and jumper into the corresponding positions in sequence; the handle assembly device is used to put the handle on the handle shaft; the U-shaped rod assembly device is used to insert one end of the U-shaped rod into the handle and the other end into the jumper; the locking shaft assembly device and the locking assembly device are used to rotate the locking shaft and locking into the corresponding positions in sequence; the terminal block and metal plate assembly device is used to assemble and fix the terminal block and metal plate and then install them into the corresponding positions; the arc-extinguishing chamber assembly device is installed into the arc-extinguishing chamber into the corresponding position; the detection mechanism is set after each component assembly device to detect the assembly status of the components; the unloading device is used to unload the assembled products and send them to the qualified product storage position or send the unqualified products detected by the detection mechanism to the unqualified product storage position.

[0010] The above technical solution effectively connects the housing loading device, multiple component assembly devices, inspection mechanisms, and unloading devices in a carrier transportation system. These devices are arranged in an orderly manner along the carrier's transport direction, forming a continuous automated assembly process. Compared to the dispersed and disconnected processes in existing technologies, this reduces component transfer and waiting times, avoids efficiency losses due to discontinuous processes, and improves the overall assembly efficiency of the circuit breaker, meeting production requirements. Each component assembly device is equipped with a corresponding inspection mechanism, which performs timely inspection after each component assembly to detect assembly errors. The unloading device collects any defective products. Simultaneously, pre-assembly... The assembly strategy, such as combining the adjusting plate and adjusting screw, and assembling the terminal block and metal plate together, reduces the alignment steps in the assembly process, lowers the risk of errors caused by multiple positioning, and makes the cooperation between components more precise. This improves the assembly accuracy and product quality of the circuit breaker, ensuring the consistency and reliability of product performance. For special components such as torsion springs, a special torsion spring assembly device has been designed to realize the operation of torsion spring feeding and tightening. By controlling the preload and tightening angle, it overcomes the problem of existing technologies relying on manual torsion spring assembly and difficulty in ensuring assembly quality, ensuring the reliability of circuit breaker operation. For other complex assembly links, such as the trip latch and trip latch shaft, U... The assembly of components such as the formwork rod is carried out using specialized assembly equipment and a reasonable assembly sequence, ensuring that these components can be installed accurately and efficiently. The design of the carrier transportation system meets the requirement for the carrier to stay stably at the workstation, avoiding the increased system complexity and cost caused by the additional installation of blocking devices when using traditional chain-driven or belt-driven methods. At the same time, it enables the recycling of carriers, reducing the manpower and time costs required for carrier recycling, cleaning, and reconfiguration, ensuring the continuous and stable operation of the production line and improving production efficiency. Through highly automated assembly processes, manual intervention is reduced, and dependence on manpower is lowered, thereby reducing labor costs. Meanwhile, the optimized assembly process and transportation system design reduce the product defect rate and equipment maintenance costs caused by assembly errors, thus reducing the production cost of circuit breakers.

[0011] In one possible design, the vehicle transport system includes a working conveyor line, a return conveyor line, a shifting fork mechanism, and a line switching mechanism. Multiple movable vehicles are transported on the working and return conveyor lines. The shifting fork mechanism includes multiple actuating elements and a power assembly. The actuating elements are fixed at intervals at the output positions of the power assembly, which drives the actuating elements to perform a U-shaped movement. The U-shaped movement includes a propulsion section, a transposition transition section, a return section, and a reset transition section. During the propulsion section, the actuating elements maintain a linked connection with the vehicles on the working conveyor line to propel the vehicles forward. The actuating component disengages from the carrier on the working conveyor line at the beginning of the transposition transition section and forms a linkage connection with the carrier on the return conveyor line at the end of the transposition transition section. During the return section, the actuating component maintains a linkage connection with the carrier on the return conveyor line and pushes the carrier backward. At the beginning of the reset transition section, the actuating component disengages from the carrier on the return conveyor line and forms a linkage connection with the carrier on the working conveyor line at the end of the reset transition section. The line switching mechanism is located at the connection position at both ends of the working conveyor line and the return conveyor line, and transports the corresponding conveyor line carrier to switch to another conveyor line.

[0012] The above design enables dual-line, closed-loop cyclic transport of the carrier between the working conveyor line and the return conveyor line. The power component in the shifting fork mechanism drives the actuating component to move along a U-shaped path, allowing only one power component to simultaneously drive the carrier movement on both the working and return conveyor lines. This avoids the drawback of traditional transport requiring an independent return drive system, reducing equipment costs and significantly simplifying the complexity of the mechanical structure. Furthermore, in conjunction with the line switching mechanism, reliable and automated switching of the carrier at the connection points of the working and return lines is achieved, ensuring the continuous and reliable operation of the cyclic transport system. In addition, after the actuating component disengages from the carrier on the working conveyor line at the beginning of the transition section, the carrier on the working conveyor line loses external propulsion, allowing the carrier a brief pause to ensure stable stopping at its designated position for processing, assembly, and testing operations. This eliminates the need for additional obstruction devices at the stopping positions, ensuring stable stopping of the carrier at the corresponding positions. This simplifies the system structure, reduces the need for additional obstruction devices, and lowers equipment costs and system complexity.

[0013] In one possible design, the working conveyor line is located above the return conveyor line, and the two are parallel to each other; both the working conveyor line and the return conveyor line include conveyor rails, and a slider is fixedly installed at the bottom of the carrier, with the slider slidingly engaged with the conveyor rails; the line switching mechanism includes a shifting cylinder and a switching rail that matches the slider, and the carrier can slide onto the switching rail via a toggle element, the switching rail being connected to the output shaft of the shifting cylinder to shift between the working conveyor line and the return conveyor line, the switching rail being adapted to the conveyor rail and switching between the conveyor rails of the working conveyor line and the return conveyor line to connect the ends of the corresponding conveyor rails and receive or send out the corresponding carriers.

[0014] By adopting the above design, the working transport path and return path of the vehicle are set up in layers through the double-layer conveyor line design. Compared with the traditional single-layer transport structure, it reduces the space occupied by empty vehicles during return trips, making the overall layout more compact and orderly, and effectively improving space utilization. The sliding cooperation of the conveyor rails and sliders provides stable guidance and support for the movement of the vehicle, reducing the shaking and deviation of the vehicle during transportation and ensuring the smooth operation of the vehicle. The line switching mechanism can realize the physical parallel connection between the switching rail and the target conveyor line, and in this state, it can naturally and smoothly receive the vehicle from the target line. Thus, through simple rail docking and slider sliding operation, the efficient, smooth and automated transfer of the vehicle between the two conveyor lines is completed, providing a vehicle switching method with a relatively simple structure, reliable operation and accurate positioning.

[0015] In one possible design, the power assembly includes a lateral drive, a transverse plate, a longitudinal drive, and a longitudinal plate. The transverse plate is connected to the output shaft of the lateral drive, the longitudinal drive is fixedly mounted on the transverse plate, the longitudinal plate is connected to the output shaft of the longitudinal drive, and the actuating element is fixedly mounted on the longitudinal plate along its axial direction.

[0016] By employing the above design, the coordinated action of the lateral and longitudinal drive components enables precise control of the actuating components on the longitudinal moving plate along a U-shaped path, ensuring the accuracy and stability of the actuating component's movement. This power assembly structure is rationally designed, allowing for flexible adjustment of the actuating component's motion parameters, such as speed and stroke, according to actual production needs. This adapts to different production rhythms and vehicle transportation requirements, improving the versatility and adaptability of the transportation device. In one possible design, the torsion spring assembly device includes a torsion spring vibrating conveyor, a torsion spring dispensing mechanism, and a torsion spring loading mechanism; the torsion spring vibrating conveyor is used for vibrating conveying of the torsion springs to be assembled; the torsion spring dispensing mechanism includes a torsion spring dispensing seat and a dispensing drive, the torsion spring dispensing seat receiving a torsion spring located at the front of the conveyor queue transported by the torsion spring vibrating conveyor; the torsion spring loading mechanism includes a loading moving module, a picking shaft, an unloading sleeve, and an unloading drive; the picking shaft is connected to the output end of the loading moving module; the unloading sleeve is movably sleeved outside the picking shaft; the unloading drive is connected to... The unloading sleeve is attached to the feeder and is used to drive the unloading sleeve to move axially along the feeder shaft; the feeding moving module is used to drive the feeder shaft to move above the torsion spring distribution seat and lower it, so that the feeder shaft extends to the center of the torsion spring in the torsion spring distribution seat and elastically squeezes into the center of the torsion spring, driving the torsion spring to be sleeved on the bottom of the feeder shaft; and to drive the feeder shaft with the torsion spring sleeved to move above the torsion spring installation position of the target product and lower it for positioning; the unloading drive is used to drive the unloading sleeve to descend after positioning, so that the bottom of the unloading sleeve contacts the torsion spring and pushes the torsion spring down until the torsion spring is disengaged from the feeder shaft, thereby completing the installation of the torsion spring on the target product.

[0017] The above design, through the coordinated operation of the torsion spring vibrating conveyor, torsion spring distribution mechanism, and torsion spring loading mechanism, achieves an automated process for torsion springs from conveying and distribution to installation. The torsion spring vibrating conveyor utilizes vibration to achieve automatic and orderly conveying of torsion springs, providing a stable material supply for subsequent processes. The torsion spring distribution mechanism, through the cooperation of the torsion spring distribution seat and the distribution drive component, ensures that only one torsion spring enters the loading stage at a time, avoiding multiple or disordered materials and improving the accuracy and stability of loading. The torsion spring loading mechanism's picking shaft and unloading sleeve are cleverly coordinated, with the picking shaft using elastic extrusion... The spring is inserted into the center of the torsion spring in a way that avoids damage caused by forced insertion and utilizes the spring's own elastic torque for reliable gripping. The unloading sleeve then smoothly pushes the torsion spring downwards through axial movement, ensuring that the torsion spring disengages from the picking shaft without jamming. This solves the problems of unstable gripping and sticking during release that are common with traditional grippers. The automated process formed by these three components requires no manual intervention, significantly improving the efficiency of torsion spring assembly. It also avoids the problem of unstable assembly quality caused by manual operation, improves product consistency, and eliminates safety hazards such as torsion springs flying out and pinching operators during manual operation.

[0018] In one possible design, the torsion spring assembly device further includes a tightening mechanism, which includes a tightening moving module, a contouring shaft, and a contouring shaft drive. The contouring shaft is connected to the output end of the tightening moving module. The contouring shaft drive is connected to the contouring shaft and is used to drive the contouring shaft to rotate. The tightening moving module is used to move the contouring shaft to the location of the target product where the torsion spring has been installed, and to bring the contouring shaft close to one arm of the torsion spring. The contouring shaft drive drives the contouring shaft to rotate, so that the contouring shaft abuts against one arm of the torsion spring and twists the arm until the arm twists and engages with the corresponding position of the target product, thereby completing the tightening and fixing of the torsion spring.

[0019] The above design incorporates a torsion spring tightening mechanism, enabling the torsion spring assembly device to form a complete torsion spring assembly process. The contour shaft of the tightening mechanism precisely simulates the manual torsion arm action through its rotational movement. The contour shaft drive controls the rotation angle and force, ensuring that the torsion spring arm is precisely engaged in the target position. This allows for the efficient, accurate, and consistent completion of all automated processes from torsion spring loading and installation to final reliable tightening.

[0020] In one possible design, the terminal block and metal sheet assembly device includes a terminal block feeding module, a metal sheet feeding module, an assembly module, and a contour positioning and mounting module. The terminal block feeding module includes a terminal block vibrating feed channel and a terminal block clamping mechanism for vibrating and sorting the terminal blocks and clamping them to predetermined positions. The metal sheet feeding module includes a metal sheet vibrating feed channel and a metal sheet dispensing and pushing mechanism for vibrating, sorting, and pushing the metal sheets to predetermined positions. The assembly module includes a combination fixture, a fixture shifting mechanism, a screw feeding mechanism, and a screw feeding station corresponding to the screw feeding mechanism's operation position. The combination fixture is located at the intersection of the terminal block clamping mechanism and the metal sheet dispensing and pushing mechanism, for receiving and positioning the terminal block placed by the terminal block clamping mechanism and the metal sheet pushed by the metal sheet dispensing and pushing mechanism, so that the metal sheet is inserted into the terminal block. The fixture shifting mechanism drives the combination fixture to move to the screw feeding station. The screw feeding mechanism is located at the screw feeding station and is used for... The screws are fed into the wiring frame on the assembly fixture and tightened, pressing the screws against the metal sheet, thus fixing the metal sheet, wiring frame, and screws into a semi-finished assembly. The assembly transfer module includes a clamping and moving module and grippers on the clamping and moving module, used to clamp and transfer the semi-finished assembly formed on the assembly fixture. The contour positioning and mounting module includes a contour block, a push rod, and a contour moving module. The contour block has a through-hole, the shape of which mimics the specific shape of the mounting position on the target product. The push rod, located above the contour block, presses the semi-finished assembly transferred from the grippers into the contour hole, causing the semi-finished assembly to elastically deform according to the shape of the contour hole. The contour moving module drives the contour block to move above and close to the mounting position of the target product. The push rod continues to press down on the semi-finished assembly, causing it to disengage from the contour hole and be inserted into the mounting position of the target product. The semi-finished assembly is positioned by elastic contact between its elastically deformed portion and the mounting position.

[0021] The above design features automatic sorting and feeding of the wiring frame and metal sheet vibrating feed channels, replacing manual operation and improving feeding efficiency. The wiring frame clamping mechanism and the metal sheet dispensing and pushing mechanism work together in a combined fixture to accurately insert the metal sheet into the wiring frame, avoiding the misalignment and omissions that occur during manual assembly. The metal sheet is inserted into the wiring frame at the combined fixture, and then pre-tightened with screws to form a semi-finished assembly. This eliminates the cumbersome process of on-site assembly of separate parts in existing technologies, significantly improving assembly efficiency and avoiding positioning interference of parts in confined spaces. The assembly transfer module transports the semi-finished assembly as a whole unit, simplifying the positioning difficulty of subsequent processes. The contoured holes accurately mimic the shape of the target installation position, ensuring pre-positioning of the assembly. During the pressing process, the assembly undergoes controllable elastic deformation, allowing its shape to adaptively match the target position. Finally, self-locking positioning is achieved through elastic contact, solving the problem of misalignment and detachment during installation in complex positions, significantly improving installation reliability and yield. In this way, the pre-assembly of the wiring frame, metal sheet, and screws is realized, effectively solving the positioning problem during installation in complex positions, reducing installation interference, and significantly improving assembly quality and production efficiency.

[0022] In one possible design, the terminal block and metal plate assembly device also includes a screw state adjustment module. The screw state adjustment module includes a rotatable tightening tool. After the semi-finished assembly is installed in the target product installation position, the screw state adjustment module inserts the tightening tool to the screw position and reverses the screw so that the screw is no longer pressing against the metal plate.

[0023] With the above design, after the assembly is installed in place, the screw is turned in reverse to prevent it from pressing against the metal plate. This achieves the function of pre-tightening and then loosening the screw, which meets the design requirement of loosening the screw when the product leaves the factory. It avoids the obstruction of subsequent processes caused by tightening the screw and provides convenience for connecting wires to the junction box after leaving the factory.

[0024] In one possible design, the assembly of the adjusting plate and adjusting screw includes a combined material distribution seat, an adjusting plate vibrating channel, a movable transverse material distribution block, a movable longitudinal pushing block, a screw-driving mechanism, and a combined feeding and shifting mechanism. The combined material distribution seat has a first longitudinal groove, a second longitudinal groove, and a transverse groove. The first and second longitudinal grooves are parallel to each other and intersect perpendicularly with the transverse groove. The first longitudinal groove communicates with the outlet of the adjusting plate vibrating channel to receive the adjusting plate conveyed by the channel. The transverse material distribution block slides back and forth within the transverse groove and pushes the first longitudinal material distribution block... The adjusting plate at the intersection of the longitudinal and transverse grooves moves to the intersection of the second longitudinal and transverse grooves; the screw-driving mechanism is located above the intersection of the second longitudinal and transverse grooves to supply adjusting screws and screw them into the adjusting plate at its position; the longitudinal pushing block slides back and forth in the second longitudinal groove and pushes the adjusting plate at the intersection of the second longitudinal and transverse grooves, where the adjusting screws have been screwed in, to the end of the second longitudinal groove; the output shaft of the combined feeding and shifting mechanism is equipped with a combined clamping seat, and the combined feeding and shifting mechanism moves the combined clamping seat from the end of the second longitudinal groove to the target product of the carrier at the corresponding workstation.

[0025] With the above design, the device achieves full automation of the adjustment plate's automatic feeding, distributing, screw tightening, and assembly transfer through the coordinated operation of various components. This reduces manual intervention, lowering labor costs and human error. The vibration channel of the adjustment plate works in conjunction with the combined distributing seat to ensure the orderly conveying and positioning of the adjustment plate. The transverse distributing block and longitudinal pushing block precisely move the adjustment plate, providing a stable foundation for screw tightening and subsequent feeding. The screw-driving mechanism directly completes screw assembly at a specific position, avoiding multiple positioning errors caused by step-by-step operations. The combined feeding and shifting mechanism ensures that the assembly is accurately installed to the target product, improving assembly efficiency and continuity, and ensuring the quality stability and consistency of the adjustment plate and adjustment screw assembly process during circuit breaker assembly.

[0026] In one possible design, the vehicle transport system has two sets, which are located in the front and rear directions of the manual assembly station, respectively. The front and rear positions of the manual assembly station are respectively equipped with transfer mechanisms for transferring the target product.

[0027] By adopting the above design and rationally dividing the assembly process at the manual assembly station, this layout avoids production line stagnation caused by waiting for manual operation in the manual assembly stage of a single carrier transport system, reduces the dwell time of the carrier at the station, and improves the turnover efficiency of the carrier. The two sets of carrier transport systems can operate independently, forming parallel material conveying channels before and after the manual assembly station, making the overall logistics of the production line smoother, effectively mitigating the impact of the manual assembly stage on the automated assembly rhythm, and improving the overall continuity and production efficiency of the production line. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the target product to be assembled according to the present invention; Figure 2 This is a flowchart of the assembly process of the present invention; Figure 3 This is a schematic diagram of the overall structure of the present invention; Figure 4 This is a schematic diagram of the structure of part of the present invention. Figure 1 ; Figure 5 This is a schematic diagram of the structure of part of the present invention. Figure 2 ; Figure 6 This is a schematic diagram of the vehicle transportation system of the present invention; Figure 7 This is a partial structural diagram of the vehicle transportation system of the present invention. Figure 1 ; Figure 8 This is a partial structural diagram of the vehicle transportation system of the present invention. Figure 2 ; Figure 9 This is a partial structural diagram of the vehicle transportation system of the present invention. Figure 3 ; Figure 10 This is a schematic diagram of the torsion spring assembly device of the present invention; Figure 11 This is a partial structural schematic diagram of the torsion spring assembly device of the present invention; Figure 12 This is a schematic diagram of the structure of the torsion spring vibrating material channel and the torsion spring material distribution mechanism of the present invention; Figure 13 This is a schematic diagram of the torsion spring feeding mechanism and the torsion spring dispensing mechanism of the present invention; Figure 14 This is a schematic diagram of the torsion spring feeding mechanism of the present invention during feeding. Figure 15 This is a schematic diagram of the tightening mechanism of the present invention; Figure 16 This is a schematic diagram of the structure of the terminal block and metal sheet assembly device of the present invention. Figure 1 ; Figure 17 This is a schematic diagram of the structure of the terminal block and metal sheet assembly device of the present invention. Figure 2 ; Figure 18 This is a partial structural schematic diagram of the assembly device for the terminal block and metal sheet of the present invention. Figure 19 This is a schematic diagram of the wiring frame feeding module and the metal sheet feeding module of the present invention; Figure 20 This is a schematic diagram of the structure of the wiring frame feeding module, metal sheet feeding module, assembly module, and component transfer module of the present invention. Figure 1 ; Figure 21 This is a schematic diagram of the structure of the wiring frame feeding module, metal sheet feeding module, assembly module, and component transfer module of the present invention. Figure 2 ; Figure 22 This is a schematic diagram showing the state of screw feeding process in the assembly device for the terminal block and metal sheet of the present invention. Figure 23 This is a schematic diagram of the structure of the assembly transfer module and the contour positioning and installation module of the present invention. Figure 1 ; Figure 24 This is a schematic diagram of the structure of the assembly transfer module and the contour positioning and installation module of the present invention. Figure 2 ; Figure 25 This is a schematic diagram of the structure of the assembly device for the adjusting plate and adjusting screw of the present invention; Figure 26 This is a partial structural schematic diagram of the assembly device for the adjusting plate and adjusting screw of the present invention; Figure 27 This is a schematic diagram of the arc-extinguishing chamber assembly device of the present invention; The components include: 1. Shell feeding device; 2. Handle spring assembly device; 3. Adjusting plate and adjusting screw assembly device; 4. Manual assembly station; 5. Jumper buckle and jumper buckle shaft assembly device; 6. Handle shaft assembly device; 7. Handle assembly device; 8. U-shaped rod assembly device; 9. Locking shaft assembly device; 10. Locking assembly device; 11. Arc extinguishing chamber assembly device; 12. Detection mechanism; 13. Unloading device; 14. Transfer mechanism. A0. Carrier transport system; A1. Working conveyor line; A11. Conveyor slide rail; A2. Return conveyor line; A3. Carrier; A31. Slider; A32. Insertion hole; A4. Fork mechanism; A41. Lateral drive component; A42. Lateral transfer plate; A43. Longitudinal drive component; A44. Longitudinal transfer plate; A45. Actuating component; A5. Line switching mechanism; A51. Shift cylinder; A52. Switching slide rail; 1a. Advancement section; 1b. Transition section; 1c. Return section; 1d. Reset transition section; B0, Torsion spring assembly device; B1, Torsion spring vibrating feed channel; B11, Material blocking cylinder; B2, Torsion spring material distribution mechanism; B21, Torsion spring material distribution seat; B22, Material distribution drive component; B3, Torsion spring feeding mechanism; B31, Feeding moving module; B32, Picking shaft; B321, Chamfer; B33, Unloading sleeve; B34, Unloading drive component; B35, Picking rotation drive component; B4. Tightening mechanism; B41. Tightening moving module; B42. Copying shaft; B43. Copying shaft drive component; B44. Mounting base plate; B45. Rocker arm; B46. Stroke limiter; C0. Assembly device for terminal block and metal sheet; C1. Terminal frame feeding module; C11. Terminal frame vibrating feed channel; C12. Terminal frame clamping mechanism; C2, Metal sheet feeding module; C21, Metal sheet vibrating feed channel; C22, Metal sheet dispensing and pushing mechanism; C221, Metal sheet dispensing block; C222, Metal sheet dispensing seat; C223, Metal sheet pushing drive component; C3, Assembly module; C31, Combination fixture; C32, Fixture shifting mechanism; C33, Screw feeding mechanism; C34, Screw feeding station; C35, Positioning component; C36, Limiting component; C4, Assembly transfer module; C41, Gripping and moving module; C42, Gripper; C5, contour positioning and mounting module; C51, contour block; C511, contour hole; C52, push rod; C53, contour moving module; C6, Screw status adjustment module; C61, Tightening tool; 31. Combined material distribution seat; 311. First longitudinal groove; 312. Second longitudinal groove; 313. Transverse groove; 32. Adjustable plate vibrating material channel; 33. Transverse material distribution block; 34. Longitudinal material pushing block; 35. Screw-driving mechanism; 36. Combined feeding and shifting mechanism; 361. Combined clamping seat; 111. Clamping mechanism; 112. Material distribution mechanism; D0, Target Product; D1, Housing; D2, Adjusting Plate; D3, Adjusting Screw; D4, Jumper; D5, Jumper Shaft; D6, Handle Shaft; D7, Handle; D8, U-shaped Rod; D9, Lock Shaft; D10, Lock; D11, Arc Extinguishing Chamber; D12, Torsion Spring; D13, Terminal Block; D14, Metal Sheet. Detailed Implementation

[0029] like Figures 1-5The diagram shows an automated assembly line for circuit breakers. The target product D0 to be assembled is a circuit breaker, which consists of a housing D1, an adjusting plate D2, an adjusting screw D3, a trip latch D4, a trip latch D4 shaft, a handle shaft D6, a handle D7, a U-shaped rod D8, a locking shaft D9, a locking latch D10, an arc-extinguishing chamber D11, a torsion spring D12, a terminal block D13, and a metal sheet D14. The production line of this application consists of a carrier transportation system A0, a housing loading device 1, multiple component assembly devices, a testing mechanism 12, and a unloading device 13. The vehicle transportation system A0 includes a vehicle A3 for transportation. The shell loading device 1, multiple component assembly devices, inspection mechanism 12, and unloading device 13 are respectively set up with workstations that are aligned with the vehicle transportation system A0. The shell loading device 1 transports the shell to the vehicle A3 at the corresponding workstation of the vehicle transportation system A0 and positions the shell on the vehicle A3. Thereafter, the vehicle A3, driven by the vehicle transportation system A0, sequentially moves to the workstations corresponding to the component assembly devices, inspection mechanism 12, and unloading device 13. Multiple component assembly devices include, sequentially arranged along the transport direction A0 of the vehicle transport system: torsion spring assembly device B0, handle spring assembly device 2, adjusting plate and adjusting screw assembly device 3, manual assembly station 4, jumper and jumper shaft assembly device 5, handle shaft assembly device 6, handle assembly device 7, U-shaped rod assembly device 8, locking shaft assembly device 9, locking assembly device 10, terminal block and metal sheet assembly device C0, and arc extinguishing chamber assembly device 11. After each component assembly device has been operated, the inspection mechanism 12 immediately inspects the assembly status. Qualified products are sent to the qualified product storage location by the unloading device 13, while unqualified products are sent to the unqualified product storage location.

[0030] The torsion spring assembly device B0 is used to assemble and tighten the torsion spring; the adjusting plate and adjusting screw combination assembly device 3 is used to assemble the adjusting plate and adjusting screw after screwing them together; the manual assembly station 4 is used by workers to assemble the parts that need to be installed by workers; the jump buckle and jump buckle shaft assembly device 5 is used to install the jump buckle shaft and jump buckle to the corresponding positions in sequence; the handle assembly device 7 is used to put the handle on the handle shaft; the U-shaped rod assembly device 8 is used to insert one end of the U-shaped rod into the handle and the other end into the jump buckle; the locking shaft assembly device 9 and the locking buckle assembly device 10 are used to rotate the locking shaft and locking buckle to the corresponding positions in sequence; the terminal block and metal plate combination assembly device C0 is used to combine and fix the terminal block and metal plate and then install them to the corresponding positions; the arc extinguishing chamber assembly device 11 is installed into the arc extinguishing chamber to the corresponding position; the detection mechanism 12 is set after each component assembly device to detect the assembly status of the components; the unloading device 13 is used to unload the assembled products and send them to the qualified product storage position or send the unqualified products detected by the detection mechanism 12 to the unqualified product storage position.

[0031] like Figures 5-9As shown, the carrier transport system A0 includes a working conveyor line A1, a return conveyor line A2, a fork-pulling mechanism, and a line switching mechanism A5. The working conveyor line A1 and the return conveyor line A2 are arranged in parallel and can be configured with different lengths and directions according to the production line layout requirements. They carry multiple movable carriers A3 for placing products or semi-finished products. The fork-pulling mechanism includes multiple actuating elements A45 and a power assembly. The actuating elements A45 are fixed at intervals at the output positions of the power assembly, and the power assembly drives the actuating elements A45 to perform a zigzag path movement. The U-shaped path includes a forward section 1a, a transposition transition section 1b, a return section 1c, and a reset transition section 1d. In the forward section 1a, the actuating element A45 is linked with the carrier A3 on the working conveyor line A1, pushing the carrier A3 forward along the working conveyor line A1. In the transposition transition section 1b, the actuating element A45 disengages from the carrier A3 on the working conveyor line A1 and forms a linkage connection with the carrier A3 on the return conveyor line A2 at the end of this section. In the return section 1c, the actuating element A45 forms a linkage connection with the carrier A3 on the return conveyor line A2 and pushes the carrier A3 backward. In the reset transition section 1d, the actuating element A45 disengages from the carrier A3 on the return conveyor line A2 and re-links with another carrier A3 on the working conveyor line A1 at the end of this section. The line switching mechanism A5 is located at the connection position at both ends of the working conveyor line A1 and the return conveyor line A2, and transports the corresponding conveyor line carrier A3 to switch to another conveyor line.

[0032] The actuating element A45 is cylindrical, and its cylindrical body is fixed to the output position of the power assembly by bolts. The carrier A3 has a socket A32 adapted to the actuating element A45. The diameter of the socket A32 is slightly larger than the diameter of the actuating element A45. The end of the actuating element A45 is inserted into the socket A32 along the movement direction of the shift transition section 1b or the reset transition section 1d, and the actuating element A45 drives the carrier A3 to move along the movement direction of the push section 1a or the return section 1c. When the actuating element A45 moves to the advancing section 1a or the returning section 1c, the end of the actuating element A45 is inserted into the insertion hole A32 of the carrier A3. The abutting engagement between the actuating element A45 and the wall of the insertion hole A32 causes the carrier A3 to move radially along the insertion hole A32. At the transposition transition section 1b or the reset transition section 1d, the actuating element A45 is withdrawn from the insertion hole A32 along the axial direction and then inserted into the insertion hole A32 of another carrier A3, thereby achieving disengagement or reconnection from the carrier A3. Of course, the actuating element A45 can be replaced with an electromagnet, and the carrier A3 is correspondingly equipped with an iron insert.

[0033] The working conveyor line A1 is located above the return conveyor line A2, and the two are parallel to each other. Working conveyor line A1 is on the upper level, and the return conveyor line A2 is on the lower level, parallel to working conveyor line A1, and of the same length, used for the return of empty vehicle A3. This double-layer parallel layout vertically separates working conveyor line A1 and return conveyor line A2, effectively saving horizontal floor space, while also facilitating operator observation and operation of vehicle A3 on both conveyor lines.

[0034] Both the working conveyor line A1 and the return conveyor line A2 include aluminum alloy conveyor rails A11. The conveyor rails A11 are fixed on the frame of the production line. The bottom of the carrier A3 is fixedly installed with a slider A31. The slider A31 slides with the conveyor rails A11, so that the carrier A3 can move stably along the rails during the conveying process, reducing shaking and deviation.

[0035] The line switching mechanism A5 includes a shifting cylinder A51 and a switching slide rail A52 that matches the slider A31. The carrier A3 can slide onto the switching slide rail A52 via the toggle member A45. The switching slide rail A52 is connected to the output shaft of the shifting cylinder A51 to shift between the working conveyor line A1 and the return conveyor line A2. The switching slide rail A52 is adapted to the conveyor slide rail A11. The switching slide rail A52 is an aluminum alloy slide rail of the same specification as the conveyor slide rail A11 but shorter in length. It switches between the conveyor slide rails A11 of the working conveyor line A1 and the return conveyor line A2 to connect the ends of the corresponding conveyor slide rails A11 in parallel and receive or send out the corresponding carrier A3. When carrier A3 reaches the end of the working conveyor line A1 or the return conveyor line A2, the shift cylinder A51 drives the switching slide rail A52 to move, so that it is connected in parallel with the conveyor slide rail A11 of the corresponding conveyor line. Carrier A3, together with slider A31, is pushed by the actuating element A45 in the pushing section 1a or the return section, and slides along the conveyor slide rail A11 to the switching slide rail A52. Then, the shift cylinder A51 drives the switching slide rail A52 to move, and the carrier A3 and slider A31 are switched to another conveyor line, realizing the stable transfer of carrier A3 between the two conveyor lines.

[0036] The power assembly includes a transverse drive component A41, a transverse plate A42, a longitudinal drive component A43, and a longitudinal plate A44. The transverse plate A42 is connected to the output shaft of the transverse drive component A41. The longitudinal drive component A43 is fixedly mounted on the transverse plate A42. The longitudinal plate A44 is connected to the output shaft of the longitudinal drive component A43. An actuating component A45 is fixedly mounted on the longitudinal plate A44 along its axial direction. The longitudinal drive component A43 is connected to the longitudinal plate A44 using a servo motor and a lead screw module. The transverse drive component A41 is connected to the transverse plate A42 using a cylinder and a cylinder connector. The longitudinal plate A44 and the transverse plate A42 slide via a slide rail slider A31 pair. The actuating element A45 is fixedly mounted on the longitudinal moving plate A44 along the axial direction by bolts. Through the coordinated movement of the transverse driving element A41 and the longitudinal driving element A43, the movement of the actuating element A45 in a zigzag path is precisely controlled. The movement speed and stroke of the actuating element A45 can be flexibly adjusted by adjusting the speed and pulse number of the servo motor or by adjusting the height or position of the actuating element A45.

[0037] The specific working principle of the transportation system in this application is as follows: I. Starting point of the cycle: Propulsion and transportation stage When carrier A3 is on the working conveyor line A1, the actuating element A45 of the shift fork mechanism A4 enters the propulsion section 1a under the drive of the power component. At this time, each actuating element A45 is inserted into the corresponding carrier A3's insertion hole A32 to form a rigid connection. The lateral drive element A41 pushes the actuating element A45 forward horizontally, causing each carrier A3 on the working conveyor line A1 to move a certain distance along the working conveyor line A1 slide rail until it stops.

[0038] II. Switching Vehicle A3: Transition Section 1b The actuating component A45 enters the transposition transition section 1b, where the longitudinal drive component A43 pulls down the actuating component A45 so that it vertically disengages from the insertion hole A32 of the carrier A3. The carrier A3 loses its thrust and naturally stops. At this point, the carrier A3 immediately proceeds to the assembly, inspection, and other workstation operations, thus achieving a stable working window for the workstation operations. The actuating component A45 then continues its movement and descends to the height of the return conveyor line A2, inserting itself into the insertion hole A32 of the corresponding carrier A3 on the return conveyor line A2, preparing for the return stage.

[0039] III. No-load return: Return conveying stage When the actuating element A45 enters the return section 1c, the lateral drive element A41 pulls the actuating element A45 backward horizontally, causing each carrier A3 of the return conveyor line A2 to move a distance along the slide rail towards the starting point. During this process, the empty carrier A3 or the carrier A3 that has completed processing will be intermittently moved back to the starting position.

[0040] IV. Reset by toggle: Reset transition section 1d The actuating element A45 enters the reset transition section 1d, and the longitudinal drive element A43 lifts the actuating element A45 to disengage from the insertion holes A32 of each carrier A3 on the return conveyor line A2, causing the carriers A3 on the return conveyor line A2 to temporarily stop. The actuating element A45 continues to complete its movement and rises to the height of the working conveyor line A1, inserting itself into the insertion hole A32 of the corresponding carrier A3 on the working conveyor line A1, preparing for the next cycle.

[0041] V. Cross-floor switching: Conveyor line transfer When carrier A3 arrives at the end of working conveyor line A1, the line switching mechanism A5 is activated simultaneously: the shifting cylinder A51 pushes the switching slide rail A52 at the end of working conveyor line A1 upwards and shifts, so that it is precisely aligned with the working line slide rail. Specifically, the last carrier A3 at the end slides along the conveyor slide rail A11 into the switching slide rail A52 under the action of the pusher A45 in the advancing section 1a. Then, the pusher A45 enters the transition section 1b. During the transition section 1b, the shifting cylinder A51 lowers the switching slide rail A52, so that it is separated from working conveyor line A1 and docks with the return conveyor line A2 conveyor slide rail A11, completing the track switching. In this process, as the carrier A3 descends, it moves downwards along the axial direction of the corresponding actuating element A45, from the top to the bottom of the actuating element A45. Then, as the actuating element A45 enters the return section, it carries the carrier A3 to the conveyor rail A11 of the return conveyor line A2. Similarly, when the carrier A3 returns to the end of the return conveyor line A2, it slides into the switching rail A52, then rises to the height of the working conveyor line A1. The carrier A3 then slides into the starting end of the working line to reload material, completing the entire closed-loop cycle.

[0042] like Figures 10-15 As shown, the torsion spring assembly device B0 mainly includes a torsion spring vibrating conveyor B1, a torsion spring dispensing mechanism B2, a torsion spring loading mechanism B3, and a tightening mechanism B4. The torsion spring vibrating conveyor B1 is used to vibrate and transport the torsion springs to be assembled. It generates vibration through a built-in vibration source, causing the torsion springs to move in a set direction within the conveyor. The torsion spring dispensing mechanism B2 consists of a torsion spring dispensing seat B21 and a dispensing drive component B22. The dispensing seat B21 receives a torsion spring located at the front of the conveyor queue transported by the torsion spring vibrating conveyor B1, while the dispensing drive component B22 controls the movement of the dispensing seat B21. The torsion spring loading mechanism B3 includes a loading moving module B31, a picking shaft B32, an unloading sleeve B33, and an unloading drive component B34, realizing the gripping and installation of the torsion springs. The tightening mechanism B4 consists of a tightening moving module B41, a contouring shaft B42, and a contouring shaft B42 drive component, completing the tightening and fixing of the torsion springs.

[0043] The torsion spring vibrating material channel B1 is inclined, and its inclination angle can be selected within the range of 15°-45° according to actual needs. In this embodiment, 30° is preferred. This inclination angle can ensure smooth transportation under the action of torsion spring vibration and effectively maintain the consistency of the torsion spring posture. The torsion spring distribution seat B21 is rotatably mounted on the fixed bracket. Its initial state is inclined, and its receiving inlet is aligned and connected with the outlet of the torsion spring vibrating material channel B1 to ensure that the torsion spring can smoothly enter the torsion spring distribution seat B21. The distribution drive component B22 adopts a single-acting cylinder. The output shaft of the single-acting cylinder is connected to the torsion spring distribution seat B21. Through the extension and retraction action of the single-acting cylinder, the torsion spring distribution seat B21 can be driven to rotate from the inclined state to the horizontal state. The action is simple and reliable.

[0044] A baffle cylinder B11 is installed at the outlet of the torsion spring vibrating material channel B1. The baffle cylinder B11 is installed in a specific position and orientation, and its output shaft can extend into the outlet of the torsion spring vibrating material channel B1. When the material distribution drive component B22 drives the torsion spring distribution seat B21 to rotate to a horizontal state, the output shaft of the baffle cylinder B11 extends out, closing the outlet of the torsion spring vibrating material channel B1, thereby preventing subsequent torsion springs from continuing to enter the torsion spring distribution seat B21, ensuring that only one torsion spring is waiting to be fed in the torsion spring distribution seat B21.

[0045] The loading moving module B31 adopts an XYZ axis moving module structure. Each axis moving component can utilize common linear transmission mechanisms such as linear modules and ball screw pairs, and is driven by a servo motor or stepper motor to achieve precise displacement control. The picking shaft B32 is fixedly connected to the output end of the loading moving module B31. The picking shaft B32 is made of a wear-resistant metal material, and its bottom outer diameter is slightly larger than the inner diameter of the torsion spring's center hole. A guide surface or chamfer B321 is provided at the bottom of the picking shaft B32, which provides good guidance when the picking shaft B32 approaches the torsion spring, helping it to quickly and accurately align with the torsion spring's center. The unloading sleeve B33 is movably sleeved outside the picking shaft B32. A clearance fit is used between the unloading sleeve B33 and the picking shaft B32 to ensure that the unloading sleeve B33 can move freely along the axial direction of the picking shaft B32. The unloading drive component B34 is a cylinder. The cylinder body is fixedly installed at a suitable position on the loading moving module B31. The output shaft of the cylinder is connected to the unloading sleeve B33. The cylinder's extension and retraction action drives the unloading sleeve B33 to move axially along the picking shaft B32. To further improve the success rate of material handling, a material handling rotary drive component B35 is fixedly connected to the output end of the feeding moving module B31. The material handling rotary drive component B35 can be a small rotary cylinder. The material handling shaft B32 is connected to the output shaft of the material handling rotary drive component B35. When the material handling shaft B32 descends and contacts the torsion spring, the material handling rotary drive component B35 drives the material handling shaft B32 to rotate, forming a spiral pressing action. This allows the material handling shaft B32 to more smoothly and elastically squeeze into the center of the torsion spring, reducing the friction and resistance between the material handling shaft B32 and the torsion spring.

[0046] The tightening moving module B41 also adopts an XYZ axis moving module structure to achieve precise movement of the contouring shaft B42 in space. A mounting base plate B44 is fixed to the output end of the tightening moving module B41, providing mounting support for the contouring shaft B42 drive and other components. The contouring shaft B42 drive is oscillatingly mounted on the mounting base plate B44. In this embodiment, the contouring shaft B42 drive is a cylinder, with its cylinder body mounted on the mounting base plate B44 via a hinged seat, allowing it to oscillate. A rocker arm B45 is hinged to the output shaft of the cylinder. The length direction of the rocker arm B45 is fixedly connected to the top end of the contouring shaft B42 and perpendicular to its axial direction. This structure utilizes a cylinder to drive the rocker arm B45, creating a force-reducing and stroke-reducing structure that decreases the output torque of the contouring shaft B42, thus preventing excessive torsion that could damage the torsion spring. An adjustable limiting component C36 is also provided on the mounting base plate B44. The limiting component C36 can be in the form of a combination of bolts and stops. By adjusting the position of the bolts, the limiting position of the limiting component C36 can be changed to adapt to different installation positions of the torsion spring arm. When the rocker arm B45 swings to its limit position under the drive of the contour shaft B42, it abuts against the limiting component C36, thereby ensuring the accuracy of the swing angle of the contour shaft B42 and avoiding excessive torsion that could damage the torsion spring or cause improper assembly. During operation, the torsion spring vibrating feed channel B1 is activated. Under the action of vibration, the torsion springs are screened out from the vibrating plate and move forward along the torsion spring vibrating feed channel B1. The torsion spring distribution seat B21 is in an inclined state, and its receiving inlet is connected to the outlet of the torsion spring vibrating feed channel B1. When the torsion spring at the front of the feed channel reaches the receiving inlet of the torsion spring distribution seat B21, it enters the torsion spring distribution seat B21. Then, the distribution position sensor receives the signal that the torsion spring has reached the position, and the distribution drive component B22 drives the torsion spring distribution seat B21 to rotate to a horizontal state. At the same time, the cylinder at the outlet of the torsion spring vibrating feed channel B1 closes the torsion spring vibrating feed channel B1 to prevent subsequent torsion springs from entering the torsion spring distribution seat B21. At this time, the feeding moving module B31 drives the picking shaft B32 to move above the torsion spring distribution seat B21 and descend. The picking shaft B32 probes down to the center hole of the torsion spring. The picking shaft B32 will rotate under force, ensuring that the elastic spring is squeezed into the center hole of the torsion spring and then drives the torsion spring to be sleeved at the bottom of the picking shaft B32. Subsequently, the loading moving module B31 moves the picking shaft B32, which is fitted with a torsion spring, above the torsion spring mounting position on the target product and lowers it for positioning. The unloading drive unit B34 drives the unloading sleeve B33 to descend, causing the bottom of the unloading sleeve B33 to contact the torsion spring and push it down until the torsion spring disengages from the picking shaft B32, completing the installation of the torsion spring on the target product. The loading moving module B31 then drives the picking shaft B32 and the unloading sleeve B33 to reset and moves on to pick up the next torsion spring. Finally, the target product moves to the torsion spring tightening station. The tightening moving module B41 moves the contouring shaft B42 close to the torsion spring. The contouring shaft B42 drive unit rotates the contouring shaft B42, causing it to press against one arm of the torsion spring and twist the arm until it is engaged in the corresponding position on the target product, completing the tightening and fixing of the torsion spring.

[0047] like Figures 16-24 As shown, terminal block D13 typically consists of an insulated terminal frame and screws for clamping the wires. The terminal block and metal sheet assembly device C0 includes a terminal frame feeding module C1, a metal sheet feeding module C2, an assembly module C3, and a contour positioning and mounting module C5; the overall layout is compact, and the modules work collaboratively. In the terminal frame feeding module C1, the terminal frame vibrating channel C11 uses a vibrating plate, which has an internal spiral track. The shape and size of the track are customized according to the shape of the terminal frame. The terminal frame is placed inside the vibrating plate, and through the resonance generated by electromagnetic vibration, the terminal frame moves upward along the spiral track, automatically sorting itself during the movement. Finally, the terminal frame at the front of the queue moves to the outlet of the terminal frame vibrating channel C11. The terminal frame clamping mechanism C12 uses a pneumatic gripper C42 in conjunction with a linear module. The linear module is fixedly mounted on the frame, and the pneumatic gripper C42 is mounted on the slider A31 of the linear module. When the wiring frame reaches the discharge port, the linear module drives the pneumatic gripper C42 to move above the wiring frame. The pneumatic gripper C42 closes to clamp the wiring frame and moves it to the side of the combined fixture C31 to wait.

[0048] In the metal sheet feeding module C2, the vibrating material channel C21 also adopts a vibratory feeder structure. After the metal sheets are sorted in the vibratory feeder, they are conveyed to the metal sheet distribution seat C222. The metal sheet distribution block C221 of the metal sheet distribution and pushing mechanism C22 is driven by a cylinder that acts as a metal sheet pushing drive C223. The metal sheet distribution seat C222 has grooves that match the shape of the metal sheets for receiving and positioning them. When the metal sheet arrives at the distribution seat, the metal sheet pushing drive C223 drives the metal sheet distribution block C221 to move, pushing the individual metal sheet from the distribution seat onto the combined fixture C31, so that the metal sheet is inserted precisely into the wiring frame waiting on one side of the combined fixture C31. The shape of the clamping position of the assembly module C3's combination fixture C31 is adapted to the contour of the wire frame and the metal sheet after they are assembled, enabling accurate positioning of the metal sheet. The fixture shifting mechanism C32 pushes the combination fixture C31 through linear modules in multiple directions. After the metal sheet is inserted into the wire frame, the linear modules drive the combination fixture C31 forward to the screw loading station C34. The screw loading mechanism C33 uses a screw feeder in conjunction with an electric screwdriver. The screw feeder can arrange and deliver the screws sequentially to the picking position of the electric screwdriver. The electric screwdriver is mounted on a vertically movable linear module. When the combination fixture C31 reaches the screw loading station C34, the electric screwdriver moves downward to pick up the screw and tightens it inside the wire frame, pressing the screw against the metal sheet to form a semi-finished assembly. The gripping and moving module C41 of the assembly transfer module C4 consists of a multi-axis robotic arm, and the gripper C42 is a pneumatic finger gripper installed at the end of the robotic arm. The multi-axis robotic arm moves according to a preset program, driving the gripper C42 to shift and grip the semi-finished assembly on the assembly fixture C31, and transfers it to the contour positioning and mounting module C5. The contour block C51 of the contour positioning and mounting module C5 is made of high-strength metal, and the contour hole C511 is precision-machined, its shape being basically consistent with the shape of the position on the target product where the semi-finished part needs to be installed. The push rod C52 is driven by a cylinder, which is fixedly mounted on the contour moving module C53 above the contour block C51. After the gripper C42 transfers the semi-finished assembly above the contour block C51, the cylinder drives the push rod C52 to press down, pressing the semi-finished assembly into the contour hole C511, causing the semi-finished assembly to undergo a slight elastic deformation according to the contour hole C511. The contour moving module C53 is a cylinder-driven linear module, and the contour block C51 is fixed on the slider A31 of the linear module. The linear module drives the contour block C51 to move above and close to the target product installation position. The push rod C52 continues to press down, causing the semi-finished assembly to disengage from the contour hole C511 and be installed in the installation position. The semi-finished assembly achieves stable positioning by elastically contacting the installation position through its elastic deformation part.

[0049] The device in this application also includes a screw state adjustment module C6, which is installed on one side of the contour positioning and mounting module C5. The screw-turning tool C61 uses an electric screwdriver head, which is mounted on a translational and rotatable drive mechanism. The drive mechanism consists of a servo motor and a linear module. When the semi-finished assembly is installed in the target product mounting position, the drive mechanism controls the electric screwdriver head to translate to the screw position. The electric screwdriver head then reverses the screw at a preset angle, so that the screw no longer presses against the metal plate.

[0050] The positioning component C35 of the assembly module C3 has a positioning groove or hole that matches the wiring frame. Positioning component C35 is driven by a cylinder, which is fixedly mounted on the frame. At the screw loading station C34, after the assembly fixture C31 is in place, the cylinder drives positioning component C35 to move towards the wiring frame, clamping and positioning the left and right sides and rear side of the wiring frame on the assembly fixture C31. During screw loading and tightening, this maintains the stability of the wiring frame, allowing only vertical displacement and preventing excessive lateral swaying. The limiting component C36 of the assembly module C3 is located on the opposite side of positioning component C35 relative to the assembly fixture C31, and is also driven by a cylinder to move horizontally. Simultaneously with positioning the wiring frame, the corresponding cylinder drives limiting component C36 to move towards the metal plate. Limiting component C36 presses against the metal plate, keeping the metal plate in its original position relative to the assembly fixture C31. When tightened, the screw rotates and the bottom of the screw presses against the metal plate, thereby causing the wiring frame to rise until the bottom of the wiring frame contacts the bottom surface of the metal plate.

[0051] The metal sheet dispensing and pushing mechanism C22 includes a movable metal sheet dispensing block C221, a fixed metal sheet dispensing seat C222, and a metal sheet pushing drive C223 that drives the metal sheet dispensing block C221 to move. The metal sheet dispensing seat C222 is located at the outlet of the metal sheet vibrating channel C21 to receive the metal sheets sent out by the metal sheet vibrating channel C21. The moving direction of the metal sheet dispensing block C221 is perpendicular to the conveying direction of the metal sheet vibrating channel C21. The metal sheet dispensing block C221 is slidably disposed in the metal sheet dispensing seat C222, and the metal sheet dispensing block C221 pushes the metal sheets in the metal sheet dispensing seat C222 into the combined clamp C31. The metal sheet distribution seat C222 is elongated and has a long groove on its top surface that is the same width as the metal sheet. The metal sheet distribution block C221 is a rectangular block structure that slides in the groove inside the metal sheet distribution seat C222. When the metal sheet distribution seat C222 receives the metal sheet into the groove, the cylinder drives the metal sheet distribution block C221 to move in the groove, pushing the metal sheet in the metal sheet distribution seat C222 into the combined fixture C31.

[0052] The fixture shifting mechanism C32 is a U-shaped motion mechanism that drives the combined fixture C31 to move sequentially between the metal sheet / wire frame assembly position, the screw loading station C34, and the gripper C42 gripping position. The gripping and moving module C41 drives the gripper C42 to move between above the combined fixture C31 of the assembly module C3 and above the contour block C51 of the contour positioning and mounting module C5. The contour moving module C53 drives the contour block C51 to move between the initial position of receiving the semi-finished assembly and above the target product installation position.

[0053] The working process of the terminal block and metal sheet assembly device C0 in this application is as follows: First, the vibrating feeder C11 automatically sorts the messy wire frames and conveys them to the outlet. The wire frame gripping mechanism C12 then operates, gripping the frontmost wire frame in the queue and precisely placing it on one side of the assembly fixture C31 in the assembly module C3, keeping the wire frame in an assembly-ready position. Simultaneously, the vibrating feeder C21 also orderly conveys metal sheets to its outlet. The metal sheet separating and pushing mechanism C22 then starts working, separating the frontmost metal sheet from the queue and horizontally pushing it along a direction perpendicular to the feeder into the pre-placed wire frame on the assembly fixture C31, completing the insertion of the metal sheet. Subsequently, the wire frame gripping mechanism C12 resets, ensuring the metal sheet is inserted into the wire frame.

[0054] Next, driven by the fixture shifting mechanism C32, the combined fixture C31, carrying the wire frame with the inserted metal plate, moves forward from the assembly station to the screw loading station C34. When the combined fixture C31 reaches the screw loading station C34, the positioning component C35 immediately activates, moving from the rear to clamp the wire frame on the combined fixture C31. Simultaneously, the limiting component C36 moves to press down on the metal plate, providing simple positioning for the wire frame and the metal plate. At this point, the screw loading mechanism C33 starts, automatically feeding a screw to the screw hole above the wire frame, driving the screwdriver head to rotate downwards and tighten the screw. After tightening, the end of the screw presses against the metal plate, thus temporarily fixing the metal plate, wire frame, and screw together to form a complete and structurally stable semi-finished assembly.

[0055] Subsequently, the assembly transfer module C4 begins operation. The gripping and moving module C41 drives its end gripper C42 to move above the assembly fixture C31. The gripper C42 accurately grips the formed semi-finished assembly and transfers it as a whole unit to the workstation of the contour positioning and installation module C5. The gripper C42 places the semi-finished assembly above the contour block C51 and aligns it with the vertically penetrating contour hole C511 on the contour block C51. The shape of the contour hole C511 is precisely manufactured to mimic the specific contour of the final installation position on the target product (such as a circuit breaker). The push rod C52 moves downward under the action of its drive cylinder, pressing the semi-finished assembly into the contour hole C511. During the pressing process, the semi-finished assembly, especially its elastic metal parts, is constrained by the shape of the inner wall of the contour hole C511, undergoing a small, controllable elastic deformation, temporarily adapting its shape to the contour of the contour hole C511.

[0056] Next, the contouring module C53 drives the entire contour block C51 to move horizontally, carrying it directly above the predetermined installation position on the target product, and ensuring that the lower surface of the contour block C51 is flush with or very close to the mounting surface of the target product. After positioning, the push rod C52 continues to apply downward pressure, pushing the semi-finished assembly completely out of the contour hole C511. At the moment of separation, the semi-finished assembly relies on its elastically deformed parts (such as the hooks or springs of the metal sheet) to generate elastic contact and interaction force with the inner wall or groove of the target product's installation position, thereby achieving self-locking positioning in the installation position, ensuring that it is firmly embedded in the predetermined position and not easily loosened.

[0057] Finally, the screw condition adjustment module C6 is activated. The target product is transported to the screw condition adjustment module C6, where the module's drive unit inserts a rotatable tightening tool C61 (such as a screwdriver bit) into the screw head of the pre-installed semi-finished assembly. Under program control, the tightening tool C61 rotates in the opposite direction, typically at least five turns, causing the screw to retract a certain distance relative to its initial tightened state. This reverse rotation releases the pressure of the screw tip on the metal plate, so the screw is no longer tightly pressing against the metal plate, but it remains partially inside the screw hole. This step fulfills the need in some product designs to avoid prolonged pressure on the metal plate or to reserve space for subsequent processes, while the semi-finished assembly's fixation on the target product relies entirely on the elastic contact positioning achieved in the previous steps.

[0058] like Figures 25-26As shown, the combined material distribution seat 31 of the adjusting plate and adjusting screw assembly device 3 is integrally formed from high-strength metal material to ensure structural stability. Its first longitudinal groove 311 is accurately aligned with the discharge port of the adjusting plate vibrating channel 32. An electromagnetic vibrator is installed at the bottom of the adjusting plate vibrating channel 32. By adjusting the frequency and amplitude of the electromagnetic vibrator, the conveying speed and sorting effect of the adjusting plate can be controlled. The transverse material distribution block 33 is driven by a servo motor through a cylinder and makes reciprocating linear motion in the transverse groove 313. The front end of the transverse material distribution block 33 is provided with a structure that matches the shape of the adjusting plate to ensure that the adjusting plate will not deviate or detach when pushing the adjusting plate. The longitudinal pushing block 34 is also driven by a cylinder and moves in the second longitudinal groove 312. The screw-driving mechanism 35 includes a screw feeder, a screw tightening shaft, and a tightening motor. The screw feeder uses a vibratory feeder to arrange the adjusting screws in an orderly manner within the guide tube and transport them to the picking position below the screw tightening shaft. The screw tightening shaft is driven by a high-precision tightening motor, controlling the tightening torque and rotation angle of the screws. When the adjusting plate is pushed to the intersection of the second longitudinal groove 312 and the transverse groove 313, the screw tightening shaft descends and inserts into the screw hole above the adjusting plate. The tightening motor then drives the screws into the pre-set screw hole on the adjusting plate. The combined feeding and shifting mechanism 36 uses a multi-axis robotic arm (…). Figure 25 The dotted line represents the state after the combined feeding and shifting mechanism 36 has moved. The combined clamping seat 361 on its output shaft grasps and releases the adjustment plate assembly by matching the shape of the adjustment plate. The multi-axis robotic arm is controlled by a motion controller and can quickly and accurately move the combined clamping seat 361 from the end of the second longitudinal groove 312 to the target product of the carrier A3 at the corresponding workstation according to the preset trajectory, thus completing the assembly of the adjustment plate assembly.

[0059] Working principle of other component assembly devices: 1. Handle Spring Assembly Device 2 (a) Vibration feeding: The handle springs are arranged in an orderly manner through the vibrating plate and conveyed to the material channel.

[0060] (ii) Material distribution and positioning: The material distribution mechanism separates a single handle spring from the material channel and positions it at the material picking position.

[0061] (III) Clamping and installation: The clamping mechanism (such as a mechanical claw) grabs the handle spring, moves it to the target installation position on the carrier A3, and accurately installs the handle spring by twisting.

[0062] II. Jumper and Jumper Shaft Assembly Device 5 (I) Assembly of jump buckle shafts: After being sorted by the vibratory feeder, the jump buckle shafts enter the material channel. The material distribution mechanism separates individual jump buckle shafts, and the clamping mechanism grabs them and inserts them into the corresponding shaft holes on the carrier A3 to complete the initial positioning.

[0063] (II) Jumper assembly: The jumper is conveyed to the material channel by the vibratory feeder. The material distribution mechanism separates and positions it. The clamping mechanism grabs the jumper and assembles it with the installed jumper shaft to ensure the fitting accuracy between the jumper and the jumper shaft.

[0064] III. Handle Shaft Assembly Device 6 (a) Vibration conveying: The handle shafts are arranged neatly under the action of the vibrating plate and conveyed to the material channel.

[0065] (ii) Material separation and gripping: The material separation mechanism separates individual handle shafts, and the gripping mechanism grips the handle shafts and adjusts their posture.

[0066] (III) Insertion and installation: The clamping mechanism accurately inserts the handle shaft into the handle shaft mounting hole on the carrier A3, and ensures a secure installation through pressure control.

[0067] IV. Handle Assembly Device 7 (i) Feeding and positioning: After the handle is sorted by the vibrating plate, it enters the material channel, and the material distribution mechanism separates it and positions it to the material picking position.

[0068] (ii) Gripping and assembly: The gripping mechanism grips the handle, aligns it with the installed handle shaft, and assembles the handle and handle shaft together by axial insertion.

[0069] V. U-shaped rod assembly device 8 (I) Vibration sorting: The U-shaped rods are arranged in an orderly manner and conveyed to the material channel through the vibrating plate.

[0070] (ii) Material sorting and part picking: The material sorting mechanism separates out individual U-shaped rods, and the clamping mechanism grabs the U-shaped rods and adjusts their posture.

[0071] (III) Assembly at both ends: The clamping mechanism first inserts one end of the U-shaped rod into the corresponding hole of the handle, and then aligns the other end with the connection position of the jump buckle. Through precise position control and pressure application, the assembly of the U-shaped rod is completed.

[0072] VI. Locking Shaft Assembly Device 9 (I) Shaft feeding: The locking shaft is conveyed to the material channel by the vibrating plate, and the material distribution mechanism separates and positions it.

[0073] (ii) Insertion and installation: The clamping mechanism grabs the locking shaft, aligns it with the locking shaft installation position on carrier A3, and inserts the locking shaft into the corresponding hole through linear motion to ensure the perpendicularity and installation depth of the shaft.

[0074] VII. Locking assembly device 10 (a) Lock feeding: The locks enter the material channel through the vibrating plate, and the material distribution mechanism separates individual locks.

[0075] (ii) Snap-fit ​​installation: The clamping mechanism grabs the buckle and aligns it with the installed buckle shaft to achieve reliable installation of the buckle.

[0076] VII. Arc-extinguishing chamber assembly device 11 (I) Arc-extinguishing chamber feeding: After being sorted by the vibrating plate, the arc-extinguishing chambers are conveyed to the material channel, where the material distribution mechanism 112 separates and positions them (e.g., Figure 27 (As shown).

[0077] (II) Installation: The clamping mechanism 111 grabs the arc-extinguishing chamber, aligns it with the arc-extinguishing chamber installation position on the carrier A3, and adjusts the attitude and position of the arc-extinguishing chamber through multi-axis motion control, so as to smoothly install it into the corresponding area of ​​the circuit breaker housing.

[0078] The vibratory feeder, clamping mechanism, and material distribution mechanism of each of the above assembly devices are parts within their respective assembly devices. Mechanisms with the same name in different assembly devices are not the same mechanism.

[0079] The transport system A0 has two sets, located at the front and rear of the manual assembly station 4, respectively, with transfer mechanisms 14 installed on both sides. The front transport system A0 transports the target product that has not completed the manual assembly process to the front of the station, and the front transfer mechanism 14 transfers the product to the starting end of the manual assembly station 4. After the manual assembly is completed, the rear transfer mechanism 14 transfers the product at the end of the manual assembly station 4 to the rear transport system A0. The two sets of transport systems A0 operate in parallel to ensure smooth logistics and assembly continuity on the production line.

[0080] Inspection mechanisms 12 are installed after each component assembly device. These mechanisms inspect the assembly status of each component, particularly checking whether it is properly installed. If an inspection mechanism 12 detects that a component is not properly installed, it is considered a defective product, and subsequent component assembly devices can be prevented from performing assembly operations. After all assembly devices are assembled, visual inspection mechanisms 12 are installed between the unloading devices 13 to inspect the overall assembly status. If all inspection mechanisms 12 pass the inspection, the unloading device 13 unloads the assembled product and sends it to the qualified product storage location; if one inspection mechanism 12 fails the inspection, the unloading device 13 sends the defective product to the defective product storage location.

Claims

1. An automated assembly production line for circuit breakers, characterized in that: It includes a vehicle transportation system (A0), a shell loading device (1), multiple component assembly devices, a testing mechanism (12), and a unloading device (13). The vehicle transport system (A0) includes a transport vehicle (A3). The shell loading device (1), multiple component assembly devices, inspection mechanism (12), and unloading device (13) are respectively set with workstations aligned with the vehicle transport system (A0). The shell loading device (1) transports the shell to the vehicle (A3) at the corresponding workstation of the vehicle transport system (A0) and positions the shell on the vehicle (A3). In subsequent processes, the vehicle (A3) is transported to the corresponding workstation through the vehicle transport system (A0). Multiple component assembly devices include a torsion spring assembly device (B0), a handle spring assembly device (2), an adjusting plate and adjusting screw combination assembly device (3), a manual assembly station (4), a jump buckle and jump buckle shaft assembly device (5), a handle shaft assembly device (6), a handle assembly device (7), a U-shaped rod assembly device (8), a locking shaft assembly device (9), a locking assembly device (10), a terminal block and metal sheet combination assembly device (C0), and an arc extinguishing chamber assembly device (11), arranged sequentially along the transport direction of the vehicle transport system (A0). The torsion spring assembly device (B0) is used to assemble and tighten the torsion spring; the adjusting plate and adjusting screw combination assembly device (3) is used to assemble the adjusting plate and adjusting screw together; the manual assembly station (4) is used by workers to assemble the parts that need to be installed by workers; the jump buckle and jump buckle shaft assembly device (5) is used to install the jump buckle shaft and jump buckle to the corresponding positions in sequence; the handle assembly device (7) is used to put the handle on the handle shaft; the U-shaped rod assembly device (8) is used to insert one end of the U-shaped rod into the handle and the other end into the jump buckle; the locking shaft assembly device (9) and the locking buckle The assembly device (10) rotates into the locking shaft and locks to the corresponding positions in sequence; the terminal block and metal sheet combination assembly device (C0) is used to fix the terminal block and metal sheet together and then install them into the corresponding positions; the arc-extinguishing chamber assembly device (11) is installed into the arc-extinguishing chamber to the corresponding position; the detection mechanism (12) is set after each component assembly device and is used to detect the assembly status of the components; the unloading device (13) is used to unload the assembled products and send them to the qualified product storage position or send the unqualified products detected by the detection mechanism (12) to the unqualified product storage position. The vehicle transport system (A0) includes a working conveyor line (A1), a return conveyor line (A2), a shifting fork mechanism, and a line switching mechanism (A5). Multiple movable vehicles (A3) are transported on the working conveyor line (A1) and the return conveyor line (A2). The shifting fork mechanism includes multiple actuating elements (A45) and a power assembly. The actuating elements (A45) are fixed at intervals at the output positions of the power assembly. The power assembly drives the actuating elements (A45) to perform a zigzag path movement. The zigzag path includes a propulsion section (1a), a shifting transition section (1b), a return section (1c), and a reset transition section (1d). During the propulsion section (1a), the actuating elements (A45) maintain a linked connection with the vehicles (A3) on the working conveyor line (A1) to push the vehicles (A3) forward. At the beginning of the transposition transition section (1b), the actuating element (A45) disengages from the carrier (A3) on the working conveyor line (A1) and forms a linkage connection with the carrier (A3) on the return conveyor line (A2) at the end of the transposition transition section (1b). During the return section (1c), the actuating element (A45) maintains a linkage connection with the carrier (A3) on the return conveyor line (A2) and pushes the carrier (A3) backward. At the beginning of the reset transition section (1d), the actuating element (A45) disengages from the carrier (A3) on the return conveyor line (A2) and forms a linkage connection with the carrier (A3) on the working conveyor line (A1) at the end of the reset transition section (1d). The line switching mechanism (A5) is located at the connection position at both ends of the working conveyor line (A1) and the return conveyor line (A2) and transports the corresponding conveyor line carrier (A3) to switch to another conveyor line.

2. The automated circuit breaker assembly production line according to claim 1, characterized in that: The working conveyor line (A1) is located above the return conveyor line (A2), and the two are parallel to each other; both the working conveyor line (A1) and the return conveyor line (A2) include a conveyor rail (A11), and a slider (A31) is fixedly installed at the bottom of the carrier (A3), the slider (A31) slidingly engaging with the conveyor rail (A11); the line switching mechanism (A5) includes a shifting cylinder (A51) and a switching rail (A52) that matches the slider (A31), and the carrier (A3) is connected to the conveyor rail (A11). The toggle switch (A45) can slide onto the switching slide rail (A52), which is connected to the output shaft of the shift cylinder (A51) to shift between the working conveyor line (A1) and the return conveyor line (A2). The switching slide rail (A52) is adapted to the conveyor slide rail (A11) and switches between the conveyor slide rails (A11) of both the working conveyor line (A1) and the return conveyor line (A2) to connect the ends of the corresponding conveyor slide rails (A11) and receive or send out the corresponding carrier (A3).

3. The automated circuit breaker assembly production line according to claim 1, characterized in that: The power assembly includes a lateral drive (A41), a transverse plate (A42), a longitudinal drive (A43), and a longitudinal plate (A44). The transverse plate (A42) is connected to the output shaft of the lateral drive (A41), the longitudinal drive (A43) is fixedly mounted on the transverse plate (A42), the longitudinal plate (A44) is connected to the output shaft of the longitudinal drive (A43), and the actuating element (A45) is fixedly mounted on the longitudinal plate (A44) along its axial direction.

4. The automated circuit breaker assembly production line according to claim 1, characterized in that: The torsion spring assembly device (B0) includes a torsion spring vibrating channel (B1), a torsion spring dispensing mechanism (B2), and a torsion spring feeding mechanism (B3). The torsion spring vibrating feed channel (B1) is used for vibrating conveying of torsion springs to be assembled; The torsion spring material distribution mechanism (B2) includes a torsion spring material distribution seat (B21) and a material distribution drive (B22). The torsion spring material distribution seat (B21) receives a torsion spring located at the front end of the material channel queue transported out by the torsion spring vibrating material channel (B1). The torsion spring feeding mechanism (B3) includes a feeding moving module (B31), a picking shaft (B32), an unloading sleeve (B33), and an unloading drive component (B34). The picking shaft (B32) is connected to the output end of the feeding moving module (B31). The unloading sleeve (B33) is movably sleeved outside the picking shaft (B32). The unloading drive component (B34) is connected to the unloading sleeve (B33) and is used to drive the unloading sleeve (B33) to move axially along the picking shaft (B32). The feeding moving module (B31) is used to drive the picking shaft (B32) to move within the torsion spring. The material holder (B21) is positioned above and lowered, causing the material picking shaft (B32) to extend to the center of the torsion spring in the torsion spring distribution seat (B21) and elastically squeeze into the center of the torsion spring, thereby driving the torsion spring to be sleeved at the bottom of the material picking shaft (B32); and driving the material picking shaft (B32) with the torsion spring sleeved to move to the torsion spring mounting position of the target product and lower to position; the unloading drive (B34) is used to drive the unloading sleeve (B33) to descend after positioning, so that the bottom of the unloading sleeve (B33) contacts the torsion spring and pushes the torsion spring down until the torsion spring disengages from the material picking shaft (B32), thereby completing the installation of the torsion spring on the target product.

5. The automated circuit breaker assembly production line according to claim 4, characterized in that: The torsion spring assembly device (B0) further includes a tightening mechanism (B4), which includes a tightening moving module (B41), a contouring shaft (B42), and a contouring shaft (B42) drive. The contouring shaft (B42) is connected to the output end of the tightening moving module (B41). The contouring shaft (B42) drive is connected to the contouring shaft (B42) and is used to drive the contouring shaft (B42) to rotate. The tightening moving module (B41) is used to move the contouring shaft (B42) to the location of the target product where the torsion spring has been installed, and to bring the contouring shaft (B42) close to one arm of the torsion spring. The contouring shaft (B42) drive drives the contouring shaft (B42) to rotate, so that the contouring shaft (B42) abuts against one arm of the torsion spring and twists the arm until the arm is twisted and locked into the corresponding position of the target product, thereby completing the tightening and fixing of the torsion spring.

6. The automated circuit breaker assembly production line according to claim 1, characterized in that: The junction box and metal sheet assembly device (C0) includes a junction box feeding module (C1), a metal sheet feeding module (C2), an assembly module (C3), and a contour positioning and mounting module (C5). The wiring frame feeding module (C1) includes a wiring frame vibration channel (C11) and a wiring frame clamping mechanism (C12), which is used to vibrate and sort the wiring frames and clamp them to a predetermined position; The metal sheet feeding module (C2) includes a metal sheet vibrating feed channel (C21) and a metal sheet dispensing and pushing mechanism (C22), which is used to vibrate, sort, and push the metal sheets to a predetermined position. The assembly module (C3) includes a combination fixture (C31), a fixture shifting mechanism (C32), a screw feeding mechanism (C33), and a screw feeding station (C34) corresponding to the operation position of the screw feeding mechanism (C33). The combination fixture (C31) is located at the intersection of the wire frame clamping mechanism (C12) and the metal sheet dispensing and pushing mechanism (C22), and is used to receive and position the wire frame placed by the wire frame clamping mechanism (C12) and the metal sheet pushed by the metal sheet dispensing and pushing mechanism (C22), so that the metal sheet is inserted into the wire frame. The clamp shifting mechanism (C32) drives the combined clamp (C31) to move to the screw loading station (C34). The screw feeding mechanism (C33) is located at the screw feeding station (C34) and is used to feed screws into the wiring frame located on the combined fixture (C31) and tighten them, so that the screws press against the metal sheet, thereby fixing the metal sheet, the wiring frame and the screws to form a semi-finished assembly. The assembly transfer module (C4) includes a clamping moving module (C41) and a gripper (C42) disposed on the clamping moving module (C41) for clamping the semi-finished assembly formed on the assembly fixture (C31) and transferring it; The contour positioning and mounting module (C5) includes a contour block (C51), a push rod (C52), and a contour moving module (C53). The contour block (C51) has a through-hole (C511) that mimics the specific shape of the mounting position on the target product. The push rod (C52) is located above the contour block (C51) and is used to press the semi-finished assembly transferred by the gripper (C42) into the contour hole (C511), so that the semi-finished assembly undergoes elastic deformation according to the shape of the contour hole (C511). The contouring moving module (C53) drives the contouring block (C51) to move above and close to the target product installation position; The push rod (C52) continues to press down on the semi-finished assembly to disengage it from the contour hole (C511) and insert it into the installation position of the target product. The semi-finished assembly is positioned by elastic contact between the elastically deformed part and the installation position.

7. The automated circuit breaker assembly production line according to claim 6, characterized in that: The terminal block and metal sheet assembly device (C0) also includes a screw state adjustment module (C6), which includes a rotatable tightening tool (C61). After the semi-finished assembly is installed in the target product installation position, the screw state adjustment module (C6) inserts the tightening tool (C61) to the screw position and reverses the screw so that the screw is no longer pressing against the metal sheet.

8. The automated assembly line for circuit breakers according to claim 1, characterized in that: The assembly device (3) for adjusting plate and adjusting screw includes a combined material distribution seat (31), an adjusting plate vibration channel (32), a movable transverse material distribution block (33), a movable longitudinal material pushing block (34), a screw-driving mechanism (35), and a combined feeding and shifting mechanism (36). The combined material distribution seat (31) is provided with a first longitudinal groove (311), a second longitudinal groove (312), and a transverse groove (313). The first longitudinal groove (311) and the second longitudinal groove (312) are parallel to each other and intersect perpendicularly with the transverse groove (313). The first longitudinal groove (311) is connected to the outlet of the adjusting plate vibration channel (32) to receive the adjusting plate conveyed by the adjusting plate vibration channel (32). The transverse material distribution block (33) slides back and forth in the transverse groove (313) and pushes the first longitudinal groove (311) (32) (33) (34). 11) The adjustment plate at the intersection of the transverse groove (313) is moved to the intersection of the second longitudinal groove (312) and the transverse groove (313); the screw-driving mechanism (35) is located above the intersection of the second longitudinal groove (312) and the transverse groove (313) to supply the adjustment screw and screw the adjustment screw into the adjustment plate at the position; the longitudinal pushing block (34) slides back and forth in the second longitudinal groove (312) and pushes the adjustment plate with the adjustment screw screwed into the intersection of the second longitudinal groove (312) and the transverse groove (313) to the end of the second longitudinal groove (312); the output shaft of the combined feeding and shifting mechanism (36) is provided with a combined clamping seat (361), and the combined feeding and shifting mechanism (36) moves the combined clamping seat (361) from the end of the second longitudinal groove (312) to the target product of the carrier (A3) at the corresponding station.

9. The automated circuit breaker assembly production line according to claim 1, characterized in that: The vehicle transport system (A0) has two sets, which are located in the front and rear directions of the manual assembly station (4). The front and rear positions of the manual assembly station (4) are respectively equipped with transfer mechanisms (14) for transferring target products.

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