Production device and method of circuit breaker contact

Abstract

The invention belongs to the technical field of circuit breaker part manufacturing, and particularly relates to a production device and method of a circuit breaker contact. Comprising a blanking and stamping device and a bending device. The blanking and stamping device comprises a base plate and a transfer beam frame, the middle of the transfer beam frame is rotationally connected with the base plate, and a plurality of first grabbing units are arranged at the end of the transfer beam frame. A feeding mechanism, a blanking station and a stamping station are arranged at the position, corresponding to the first grabbing unit, of the base plate. The bending device comprises an equipment base body and a rotary table, and the rotary table is rotationally connected with the center of the equipment base body; a plurality of material placing bases are uniformly arranged on the outer edge of the rotary table; a plurality of bending stations and discharging stations are arranged at the positions, corresponding to the material containing bases, of the equipment base body. The material placing base is matched with the first grabbing unit in position; the production efficiency is greatly improved, and meanwhile, the precision deviation caused by manual operation is avoided.

Description

Technical Field

[0001] This invention belongs to the field of circuit breaker component manufacturing technology, and specifically relates to a production apparatus and method for circuit breaker contacts. Background Technology

[0002] Circuit breaker contacts are the core components of a circuit breaker, enabling circuit switching. Their structural precision and molding quality directly affect the conductivity and service life of the circuit breaker. Currently, circuit breaker contact production mostly adopts a decentralized processing mode, requiring multiple independent machines to complete processes such as punching, stamping, and bending. The workpieces need to be manually transferred between processes, which not only results in low production efficiency and high labor costs, but also easily leads to poor consistency in workpiece precision due to human error.

[0003] The invention, with publication number CN222113208U, is titled "A Circuit Breaker Static Contact Forming Device." It includes a stamping base with a mating interface at the upper center and a die punch fixedly mounted at the bottom center. Connecting guide rods are located on both sides of the stamping base, with die assemblies connected to the ends of the guide rods. The die assemblies include a die base connected to the ends of the guide rods, a discharge port on the die base, and a stamping die fixedly mounted on the die base. The stamping die has a cavity and a feed port, with lifting mechanisms at both ends of the feed port. However, this only completes the stamping operation; other processes still require transfer operations.

[0004] In view of the above problems, there is an urgent need for a production device and method for circuit breaker contacts. Summary of the Invention

[0005] To address the above problems, this invention proposes a production apparatus for circuit breaker contacts, comprising a punching and pressing device and a bending device; The blanking and stamping device includes a base plate and a conversion beam frame. The middle part of the conversion beam frame is rotatably connected to the base plate, and the ends of the conversion beam frame are provided with multiple first gripping units. The base plate is provided with a feeding mechanism, a blanking station and a stamping station at positions corresponding to the first gripping units. The bending device includes a base and a turntable, with the turntable rotatably connected to the center of the base; multiple material placement bases are evenly arranged on the outer edge of the turntable; multiple bending stations and discharge stations are arranged on the base corresponding to the material placement bases; the material placement bases are matched with the positions of the first gripping unit.

[0006] Furthermore, the feeding mechanism includes a feeding frame and a conveyor belt; the feeding frame is fixedly mounted on the base plate, and the conveyor belt is mounted on the feeding frame; The blanking station includes a first material placement seat and a blanking upper die; the first material placement seat is installed on the substrate at a position corresponding to the first gripping unit; the blanking upper die is installed on the substrate at a position corresponding to the first material placement seat; The stamping station includes a second material placement seat and a stamping upper die; the second material placement seat is installed on the substrate at a position corresponding to the first gripping unit; the stamping upper die is installed on the substrate at a position corresponding to the second material placement seat.

[0007] Furthermore, a through groove is formed on the substrate at the position corresponding to the first material placement seat, and a rotating component is provided on the substrate at the opening end of the through groove. The driving end of the rotating component is fixedly connected to the first material placement seat; a punching recess is provided on the first material placement seat. The upper stamping die is provided with a stamping block; the second material placement seat is provided with a stamping recess.

[0008] Furthermore, the material placement base has a receiving recess, the bottom of which is a shaped arc surface; side clamping plates are telescopically provided on both sides of the receiving recess; the side clamping plates cooperate with the bending station; A centering positioning block is telescopically provided in the middle of the accommodating recess, and a top rod is telescopically provided at the bottom of the accommodating recess. Both the centering positioning block and the top rod cooperate with the bending station.

[0009] Furthermore, the bending station includes a first bending station, a second bending station, a third bending station, and a fourth bending station; Both the first bending station and the fourth bending station include a machine base, and the machine base has a built-in hydraulic cylinder. The output end of the hydraulic cylinder is connected to a bending punch. The base of the first bending station is equipped with a fourth power source, and the output end of the fourth power source is connected to a first push plate. The first push plate is U-shaped and is adapted to the side clamping plates on both sides. The fifth power source is installed on the base of the fourth bending station, and the output end of the fifth power source is connected to the second push plate; the second push plate is L-shaped and is adapted to the side clamping plate on one side. The second bending station includes a platform, on which a sixth power source is installed, and the output end of the sixth power source is connected to a third push plate; a top plate is provided on the third push plate, and the top plate is adapted to the center positioning pressure block; a lifting cylinder is installed on the platform, and a top column is connected to the lifting cylinder, and the top column is adapted to the top rod. The third bending station includes a first column, on which a seventh power source is installed, and the output end of the seventh power source is connected to a fourth push plate; an eighth power source is installed on the side wall of the fourth push plate, and the output end of the eighth power source is connected to a bending top component.

[0010] Furthermore, a guide plate is provided between the hydraulic cylinder and the bending punch, and a guide slide is installed at one end of the guide plate facing the material placement base; a partition is provided at the bottom of the machine base, and a speed stabilizing unit is provided inside the partition; the guide slide is connected to the interior of the partition, and the guide slide is adapted to the speed stabilizing unit.

[0011] Furthermore, the speed stabilizing unit includes a fixed base, a cylinder is disposed at the center of the fixed base, and a movable plug is slidably connected inside the cylinder; the movable plug has a through hole. A fixed outer cylinder is provided on the fixed base at the outer position of the cylinder, and a movable outer cylinder is slidably provided on the fixed outer cylinder; the rod of the movable plug passes through the cylinder and is connected to the movable outer cylinder; a first buffer spring is sleeved between the outer wall of the cylinder and the inner wall of the movable outer cylinder.

[0012] Furthermore, the rod portion of the movable plug has a through hole, and a movable rod is placed inside the through hole; one end of the movable rod is connected to the movable outer cylinder, and the other end of the movable rod is connected to a linkage component; one end of the linkage component is slidably connected to the movable plug, and the linkage component blocks the through hole.

[0013] Furthermore, the discharge station includes a second column, on which a horizontal sliding rail is installed, a vertical lifting rail is installed on the horizontal sliding rail, and a second gripping unit is installed on the vertical lifting rail. A receiving unit is provided on the device base at the position corresponding to the second gripping unit; the receiving unit includes two feeding channels, and a guide plate is rotatably installed between the two feeding channels.

[0014] This invention proposes a method for manufacturing circuit breaker contacts, applied to the aforementioned circuit breaker contact manufacturing apparatus, specifically comprising: The blank is conveyed to the punching and stamping device via the feeding mechanism; The blanking station blanks to obtain the basic sheet body; The base sheet is transferred to the stamping station, where it is stamped to obtain a preliminary shaped sheet. The pre-formed sheet is transferred to the material placement base; the finished workpiece is obtained by bending it through multiple bending stations in sequence. The finished workpiece is transported to the unloading station, where the unloading operation is completed.

[0015] Furthermore, the finished workpiece is obtained by sequentially performing bending operations at multiple bending stations, including: The turntable drives the material placement base to rotate to the first bending station. The first bending station performs a center pre-bending on the middle part of the initially formed sheet to obtain a pre-bent workpiece. The turntable drives the material placement base to rotate to the second bending station. The second bending station bends one end of the pre-bending workpiece by 90° to obtain the bent workpiece. The turntable drives the material placement base to rotate to the third bending station. The third bending station folds the workpiece to deepen the bending process, resulting in a folded workpiece. The turntable drives the material placement base to rotate to the fourth bending station, where the folded workpiece is shaped to obtain the finished workpiece.

[0016] Beneficial effects The advantages of this invention over the prior art are as follows: 1. This application integrates automated blanking, stamping, forming and bending equipment, and uses a cross-shaped conversion beam frame and a multi-material base turntable to achieve synchronous collaboration of multiple workstations, completely replacing manual transfer, greatly improving production efficiency, and avoiding the accuracy deviation caused by manual operation.

[0017] 2. This application overcomes the problems of workpiece deformation and inconsistent contact protrusion forming in traditional processing by using a bidirectional concave position and telescopic ejector structure in the blanking station, an adaptive pre-pressing and arc surface matching design in the stamping station, a step-by-step bending and precise positioning component in the bending station, and a dynamic buffer adjustment mechanism in the speed stabilization unit, thus ensuring the precision of the contact structure and the forming quality.

[0018] 3. This application further realizes continuous material supply and workpiece classification collection without stopping the equipment by adopting a dual-channel design for the discharge station, thus taking into account both production continuity and subsequent sorting efficiency.

[0019] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention can be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the overall structure in an embodiment of the present invention is shown.

[0022] Figure 2 A top view of the overall embodiment of the present invention is shown.

[0023] Figure 3 A schematic diagram of the production process in an embodiment of the present invention is shown.

[0024] Figure 4A schematic diagram of the punching and stamping device in an embodiment of the present invention is shown.

[0025] Figure 5 A schematic diagram of the feeding mechanism in an embodiment of the present invention is shown.

[0026] Figure 6a A three-dimensional structural schematic diagram of the punching station in an embodiment of the present invention is shown.

[0027] Figure 6b A three-dimensional structural schematic diagram of the stamping station in an embodiment of the present invention is shown.

[0028] Figure 7 A three-dimensional structural schematic diagram of the material placement base in an embodiment of the present invention is shown.

[0029] Figure 8 A cross-sectional schematic diagram of the material placement base in an embodiment of the present invention is shown.

[0030] Figure 9 A cross-sectional view of the material placement base from another angle is shown in an embodiment of the present invention.

[0031] Figure 10a A three-dimensional structural schematic diagram of the first bending station in an embodiment of the present invention is shown.

[0032] Figure 10b A three-dimensional structural schematic diagram of the fourth bending station in an embodiment of the present invention is shown.

[0033] Figure 11 A schematic diagram of the cooperation between the speed stabilizing unit and the guide slide in an embodiment of the present invention is shown.

[0034] Figure 12a A cross-sectional schematic diagram of the speed stabilizing unit in an embodiment of the present invention is shown.

[0035] Figure 12b It shows Figure 12a A magnified view of a portion of point A in the middle.

[0036] Figure 13 A schematic diagram of the cooperation between the guide seat and the baffle in an embodiment of the present invention is shown.

[0037] Figure 14 A three-dimensional structural schematic diagram of the second bending station in an embodiment of the present invention is shown.

[0038] Figure 15 A three-dimensional structural schematic diagram of the third bending station in an embodiment of the present invention is shown.

[0039] Figure 16 A schematic diagram showing the cooperation between the discharge station and the unloading channel in an embodiment of the present invention is shown.

[0040] Figure 17 A schematic diagram of the operation of the guide plate in an embodiment of the present invention is shown.

[0041] Figure 18 A schematic diagram of the structure of the finished circuit breaker contact workpiece in an embodiment of the present invention is shown.

[0042] In the diagram, 1. Blanking and stamping device; 100. Base plate; 101. Support column; 102. First power source; 103. Transfer beam; 104. Transfer arm; 105. First gripping unit; 2. Feeding mechanism; 200. Blanking station; 201. Stamping station; 202. Feeding rack; 203. Conveyor belt; 204. Side limiting plate; 205. Opening; 206. Baffle; 207. First upright; 208. Second power source; 209. Upper blanking die; 210. First material placement seat; 211. Second upright frame; 212. Third power source; 213. Upper stamping die; 214. Second material placement seat; 215. Through slot; 216. Upright plate; 217. Rotating shaft; 218. Blanking recess; 219. Blanking clearance groove; 220. Accommodating hole; 221. Telescopic block; 222. Drive cylinder; 223. Lower support plate; 224. Pre-pressing block; 225. Stamping block; 226. Stamping clearance groove; 227. Stamping recess; 3. Bending device; 300. Equipment base; 301. Turntable; 4. Material placement base; 400. Accommodating recess; 401. Forming module; 402. Forming arc surface; 403. Side clamping plate; 404. Centered positioning block; 405. Push rod; 406. Contact sloping waist; 5. First bending station; 500. Fourth bending station; 501. Machine base; 502. Hydraulic cylinder; 503. Bending punch; 504. Base plate; 505. Fourth power source; 506. First push plate; 507. Fifth power source; 508. Second push plate; 6. Second bending station; 600. Third bending station; 601. Platform; 602. Sixth power source; 603. Third push plate; 604. Top plate; 605. Lifting cylinder; 606. Top column; 607. First column; 608. Fixing plate; 609. Seventh power source; 610. Fourth push plate; 611. Side plate; 612. Eighth power source; 613. Bending top component; 7. Discharge station; 700. Second column; 701. Horizontal slide rail; 702. Vertical lifting slide rail; 703. Second gripping unit; 704. Receiving unit; 705. Housing; 706. Discharge channel; 707. Pivot; 708. Guide plate; 709. Swing block; 710. Power cylinder; 8. Guide plate; 800. Guide slide column; 801. Partition; 802. Speed ​​stabilizing unit; 803. Fixed base; 804. Cylinder; 805. Moving plug; 806. Through hole; 807. Movable outer cylinder; 808. Fixed outer cylinder; 809. First buffer spring; 810. Through hole; 811. Movable rod; 812. Second buffer spring; 813. Guide seat; 814. Baffle; 815. First mating hole; 816. Second mating hole; 817. Movable arm; 9. Finished workpiece. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] This application provides a production apparatus for circuit breaker contacts, including a punching and stamping device 1 and a bending device 3; refer to Figure 1 The blanking and stamping device 1 includes a base plate 100 and a conversion beam 103. The middle part of the conversion beam 103 is rotatably connected to the base plate 100, and a plurality of first gripping units 105 are provided at the ends of the conversion beam 103; Reference Figure 4 The substrate 100 is provided with a feeding mechanism 2, a punching station 200 and a stamping station 201 at positions corresponding to the first gripping unit 105; refer to Figure 2 The bending device 3 includes a base 300 and a turntable 301, with the turntable 301 rotatably connected to the center of the base 300. Multiple material placement bases 4 are evenly distributed along the outer edge of the turntable 301. Multiple bending stations and discharge stations 7 are arranged on the base 300 at positions corresponding to the material placement bases 4. The material placement bases 4 are matched with the positions of the first gripping units 105. A support column 101 is provided on the upper surface of the base plate 100, and a first power source 102 is provided at the top of the support column 101. The output end of the first power source 102 drives the conversion beam frame 103. The conversion beam frame 103 is cross-shaped, forming four shifting arms 104, on which the multiple first gripping units 105 are respectively installed. In use, the integrated automated blanking and stamping device 1 and automated forming bending device 3 achieve full automation of the contact processing from blank to finished workpiece 9, eliminating the need for manual handling and significantly improving production efficiency. The design of the cross-structure conversion beam frame 103 and the six-piece material base 4 turntable 301 enables multi-station synchronous collaborative operation, reducing process waiting time. The step-by-step bending mode of the four independent bending stations ensures the bending accuracy of the contact and avoids workpiece deformation caused by one-time bending. The equipment is equipped with a main control system (such as a PLC controller) to synchronously control the action sequence of each power source, gripping unit, and turntable 301, ensuring the coordinated operation of each process. The first power source 102 uses a servo motor, which, together with the cross-structure conversion beam 103, enables precise coordination of four workstations: feeding, blanking, stamping, and cross-equipment transfer. Compared with the traditional cylinder-driven transfer structure, the success rate of workpiece transfer is improved, while reducing the scrap rate of workpieces caused by positioning deviation. The four independent bending workstations, together with the flexibly adjustable number of material placement bases 4, not only avoid deformation caused by stress concentration in the workpiece through gradual bending, but also adapt to different production capacities according to actual production needs. Compared with traditional equipment with a fixed number of workstations, the equipment compatibility and production adaptability are significantly improved.

[0045] This application integrates automated blanking, stamping, forming and bending equipment, and uses a cross-shaped conversion beam frame 103 and a six-piece material base 4 turntable 301 to achieve multi-station synchronous collaboration, completely replacing manual transfer, greatly improving production efficiency, and avoiding the accuracy deviation caused by manual operation.

[0046] In one embodiment of the present invention, reference is made to Figure 5 The feeding mechanism 2 includes a feeding frame 202 and a conveyor belt 203. The feeding frame 202 is fixedly mounted on the base plate 100, and the conveyor belt 203 is mounted on the feeding frame 202. Two side limiting plates 204 are provided on both sides of the top surface of the feeding frame 202, and a transmission interval for workpiece transmission is formed between the two side limiting plates 204. Each side limiting plate 204 has an opening 205 at the expected feeding position for workpiece clamping. A baffle 206 is also provided between the two side limiting plates 204 at the output end of the conveyor belt 203 to limit the output path of the workpiece. refer to Figure 6a The blanking station 200 includes a first material placement seat 210 and a blanking upper die 209; the first material placement seat 210 is installed on the substrate 100 at a position corresponding to the first gripping unit 105; the blanking upper die 209 is installed on the substrate 100 at a position corresponding to the first material placement seat 210. refer to Figure 6bThe stamping station 201 includes a second material holder 214 and a stamping upper die 213; the second material holder 214 is installed on the substrate 100 at a position corresponding to the first gripping unit 105; the stamping upper die 213 is installed on the substrate 100 at a position corresponding to the second material holder 214.

[0047] The blanking station 200 is installed on the first stand 207. The top surface of the first stand 207 is fixedly installed with a second power source 208. The second power source 208 is connected to the upper blanking die 209 and drives the upper blanking die 209 to move. A second stand 211 is installed on the stamping station 201. A third power source 212 is fixedly installed on the top surface of the second stand 211. The third power source 212 is connected to the upper stamping die 213 and drives the upper stamping die 213 to move. During use, the dual conveyor belts 203 and the side limiting plate 204 of the feeding mechanism 2 ensure that the blanks are neatly arranged and conveyed, avoiding blank deviation that could affect processing accuracy; the independent power sources (second and third power sources 212) and the matching mold bases (first and second material placement bases 214) of the blanking station 200 and the stamping station 201 enable precise control of the blanking and stamping processes, respectively ensuring the accuracy of the basic sheet contour and the forming quality of the contact protrusions; The blanking station 200 includes a first stand 207, on the top surface of which a second power source 208 (such as a hydraulic cylinder or pneumatic cylinder) is fixedly mounted. The output shaft of the second power source 208 extends vertically downward through the first stand 207 and is detachably connected to the upper blanking die 209. A first material holder 210, adapted to the upper blanking die 209, is fixedly installed on the upper surface of the substrate 100 at a corresponding position directly below the upper blanking die 209. The stamping station 201 includes a second stand 211, on the top surface of which a third power source 212 (such as a hydraulic cylinder or pneumatic cylinder) is fixedly mounted. The output shaft of the third power source 212 extends vertically downward through the second stand 211 and is detachably connected to the upper stamping die 213. The upper surface of the substrate 100 is located at a corresponding position directly below the upper blanking die 209. A second material holder 214, adapted to the upper stamping die 213, is fixedly installed at the corresponding position directly below the die 213. The blanking and stamping station 201 adopts the design of "independent power source + adapted die holder + detachable die". On the one hand, the independent power source accurately controls the stamping pressure and stroke, ensuring the forming quality of the basic sheet contour (blanking station 200) and the contact protrusion forming quality (stamping station 201) respectively. On the other hand, the detachable die design allows the equipment to be compatible with the processing of 3-5 different specifications of circuit breaker contacts without replacing the entire set of equipment, increasing the equipment utilization rate by 40% (due to the detachable die design, the equipment can be compatible with the processing of 3-5 different specifications of contacts, which reduces the frequency of equipment replacement and idle time compared to traditional single-specification equipment). The core driving component of the feeding rack 202 is the driving unit at the left end, which adopts a conventional and mature structure of "motor + transmission gear set". The motor output torque is synchronously transmitted to the rotating shaft 217 of the two conveyor belts 203 through the transmission gear set to ensure that the two belts rotate at the same speed and avoid workpiece deviation due to belt speed difference. After the workpiece (high elastic steel plate billet) is placed on the top surface of the two conveyor belts 203, it moves along the "transmission interval formed by the two side limit plates 204" under the action of belt friction. During this period, the baffle 206 restricts the lateral displacement of the workpiece by physical blocking to prevent the workpiece from sliding out from the edge of the feeding rack 202. Finally, the workpiece is accurately stopped at the preset feeding position, waiting for the first gripping unit 105 to clamp through the opening 205 of the side limit plate 204 to realize the automation and precision of billet feeding. The baffle 206 is fixed between the two side limit plates 204 along the workpiece conveying direction and is located upstream of the preset feeding position.

[0048] In one embodiment of the present invention, reference is made to Figure 6a The substrate 100 has a through groove 215 at a position corresponding to the first material holder 210. A rotating assembly is provided on the substrate 100 at the opening end of the through groove 215. The driving end of the rotating assembly is fixedly connected to the first material holder 210. A punching recess 218 is provided on the first material holder 210. refer to Figure 6b The upper stamping die 213 is provided with a stamping block 225; the second material holder 214 is provided with a stamping recess 227.

[0049] The rotating assembly includes two upright plates 216, which are respectively installed at both ends of the through groove 215 on the base plate 100. Each upright plate 216 is provided with a rotating shaft 217. The first material placement seat 210 is rotatably connected to the rotating shaft 217, so that the first material placement seat 210 is rotatably connected between the two upright plates 216. The blanking recess 218 has a blanking clearance groove 219 that matches the blanking upper die 209; a receiving hole 220 is also provided at the center of the blanking recess 218, and a telescopic block 221 is built into the receiving hole 220, with the inner end of the telescopic block 221 connected to the receiving hole 220. A spring is provided between the inner bottom wall; two drive cylinders 222 are installed at the bottom of the base plate 100 below the through groove 215, and the output shafts of the two drive cylinders 222 are connected to a lower support plate 223. The lower support plate 223 is used to provide bottom support for the first material holder 210 during blanking; the first material holder 210 is flipped after each blanking to discharge the blanking waste. Two pre-compression blocks 224 are telescopically arranged at the center of the upper stamping die 213. The pre-compression blocks 224 are equipped with springs to achieve adaptive compression. The lower surface of the stamping block 225 has multiple stamping relief grooves 226. The stamping recess 227 is used to accommodate the base sheet. The stamping recess 227 has a stamping fit protrusion formed at the corresponding position of the stamping block 225.

[0050] In use, the bidirectional punching recess 218 and flipping design of the first material holder 210 enable the rapid discharge of punching waste, reducing the impact of waste accumulation on processing; the cooperation between the telescopic block 221 and the spring allows the punched base sheet to be automatically lifted, facilitating gripping by the first gripping unit 105 and improving process connection efficiency; the pre-pressure block 224 of the upper stamping die 213 achieves adaptive clamping through the spring, which can adjust the pre-pressure intensity according to the slight difference in the thickness of the base sheet, avoiding deformation of the workpiece due to excessive clamping force or displacement due to insufficient clamping force; the precise fit between the punching clearance groove 226 and the punching engagement protrusion improves the consistency of contact protrusion forming.

[0051] The limiting groove inside the through groove 215 and the limiting block of the lower support plate 223 form a sliding guide structure, ensuring that the lower support plate 223 can only move in the vertical direction, avoiding uneven force on the first material holder 210 and affecting the punching accuracy due to the offset of the lower support plate 223 during punching; at the same time, the lower support plate 223 forms a linkage control with the cylinder and the first material holder 210. After the first material holder 210 completes one punching, the control system first triggers the cylinder to retract, driving the lower support plate 223 to exit the through groove 215 downward along the limiting groove, making room for the first material holder 210 to flip over; after the first material holder 210 is flipped into place (unused punching recess) With position 218 facing upwards, the control system triggers the cylinder to extend, driving the lower support plate 223 to reset and press against the bottom of the first material placement seat 210, ensuring that the first material placement seat 210 is stable and without displacement during subsequent punching. The entire process requires no manual intervention, realizing the automated connection between punching and waste cleaning. A waste collection cylinder is set directly below the through slot 215 (the waste collection cylinder adopts a drawer-type or hanging detachable structure, which is convenient for regular waste cleaning), which can directly receive the waste discharged when the first material placement seat 210 is flipped, avoiding the accumulation of waste inside the equipment or on the ground, reducing the frequency of manual cleaning, and forming a closed-loop process of "punching-waste discharge-collection".

[0052] refer to Figure 7 The material base 4 has a receiving recess 400, the bottom of which is a shaped arc surface 402; side clamping plates 403 are telescopically provided on both sides of the receiving recess 400; the side clamping plates 403 cooperate with the bending station. refer to Figure 8 The accommodating recess 400 has a centrally located positioning block 404 that extends and retracts in the middle, and a top rod 405 that extends and retracts in the bottom of the accommodating recess 400. Both the centrally located positioning block 404 and the top rod 405 cooperate with the bending station. (Reference) Figure 9 A molding module 401 is provided at the bottom center of the accommodating recess 400, and the molding arc surface 402 is formed on the top of the molding module 401. During use, the forming module 401 and forming arc surface 402 of the material base 4 provide a precise reference for the first bend, ensuring that the bending arc of the middle part of the contact is consistent; the synchronous / single-sided extension mode of the side clamping plate 403 and the synergistic effect of the center positioning pressure block 404 can realize multi-directional positioning of the workpiece according to the needs of different bending processes, avoiding workpiece displacement during bending; the cooperation between the push rod 405 and the second bending station 6 further improves the accuracy of specific bending positions and meets the forming requirements of complex contact structures; The six material placement bases 4 correspond to the 'material receiving position (compatible with the conversion beam 103), first bending position 5, second bending position 6, third bending position 600, fourth bending position 500, and material discharge position 7' ​​respectively. The turntable 301 rotates 60° (360° / 6) to realize the position conversion of the material placement bases 4 between each position.

[0053] refer to Figure 2 The bending station includes a first bending station 5, a second bending station 6, a third bending station 600 and a fourth bending station 500. refer to Figure 10a Both the first bending station 5 and the fourth bending station 500 include a base 501, and the base 501 has a built-in hydraulic cylinder 502. The output end of the hydraulic cylinder 502 is connected to a bending punch 503. The base of the first bending station 5 is equipped with a fourth power source 505, and the output end of the fourth power source 505 is connected to a first push plate 506. The first push plate 506 is U-shaped and is adapted to the side clamping plates 403 on both sides. refer to Figure 10b The fifth power source 507 is installed on the base of the fourth bending station 500. The output end of the fifth power source 507 is connected to the second push plate 508. The second push plate 508 is L-shaped and is adapted to the side clamping plate 403 on one side. refer to Figure 14 The second bending station 6 includes a platform 601, on which a sixth power source 602 is installed. The output end of the sixth power source 602 is connected to a third push plate 603. A top plate 604 is provided on the third push plate 603, and the top plate 604 is adapted to the center positioning pressure block 404. A lifting cylinder 605 is installed on the platform 601, and a top column 606 is connected to the lifting cylinder 605. The top column 606 is adapted to the top rod 405. refer to Figure 15The third bending station 600 includes a first column 607, on which a seventh power source 609 is mounted. The output end of the seventh power source 609 is connected to a fourth push plate 610. An eighth power source 612 is mounted on the side wall of the fourth push plate 610, and the output end of the eighth power source 612 is connected to a bending top piece 613. The outer ends of the two side clamping plates 403 have contact slopes 406 adapted to the first push plate 506. A base plate 504 is fixedly mounted on the inner bottom of the machine base 501 at a position corresponding to the bending punch 503, and the base plate 504 provides support for the material placement base 4. A fixing plate 608 is installed on the first column 607, and the seventh power source 609 is fixedly installed on the top surface of the fixing plate 608; a side plate 611 is installed on one side of the fourth push plate 610, and the eighth power source 612 is fixedly installed on the side plate 611.

[0054] In use, the first bending station 5, designed for bending at the center of the workpiece, precisely matches the contact slope 406 of the U-shaped first push plate 506 with the outer end of the side clamping plate 403. This allows the clamping plates 403 on both sides to extend and clamp both sides of the workpiece simultaneously, ensuring that the workpiece is subjected to balanced force and has no offset during the center bending process, laying a precise positioning foundation for subsequent bending processes. The fourth bending station 500, designed for unilateral bending, uses the second push plate 508 with an L-shaped structure to drive only one side clamping plate 403 to extend and fix one end of the workpiece. This adapts to the "one end fixed, the other end bent" working condition when the workpiece is folded in half, avoiding excessive clamping force that could cause workpiece deformation. When the second bending station 6 is working, the sixth power source 602 drives the L-shaped third push plate 603 to move. The top plate 604 on the inner side of the horizontal part of the push plate simultaneously pushes the centering positioning block 404 into the receiving recess 400 of the material placement base 4 to press the center of the workpiece. The structural dimensions of the centering positioning block 404 are perfectly matched with the gap after the workpiece is folded. While pressing the workpiece, the folding position can be limited. At the same time, the lifting cylinder 605 on the platform 601 drives the top column 606 to lift upward. The top column 606 is precisely connected with the top rod 405 in the material placement base 4, causing the top rod 405 to push the unfixed end of the workpiece upward, bending that end of the workpiece to 90°, realizing precise pre-bending before folding. Once the workpiece is moved to the third bending station 600, the seventh power source 609 drives the fourth push plate 610, which has the same structure as the third push plate 603, to move. Its top plate 604 also pushes the center positioning block 404 to press the workpiece in the center. Then, the eighth power source 612 drives the bending top piece 613 to move, further pressurizing and bending the workpiece end that has been pre-bent to 90° to ensure that the bending angle is accurate and there are no stress cracks at the bending point. It should be further noted that the fourth power source 505, the fifth power source 507, the sixth power source 602, the seventh power source 609, and the eighth power source 612 are all preferably cylinders or hydraulic cylinders. The selection and specific structure of the above power sources (such as the cylinder diameter of the cylinder and the working pressure of the hydraulic cylinder), the transmission and matching method of the U-shaped / L-shaped push plate, and the size adaptation logic of the centering positioning pressure block 404 are all conventional technical means in this field. They can be flexibly adjusted according to actual processing needs, and stable operation can be achieved without the need for additional research and development of new structures.

[0055] In one embodiment of the present invention, reference is made to Figure 11 A guide plate 8 is provided between the hydraulic cylinder 502 and the bending punch 503, and a guide slide column 800 is installed at one end of the guide plate 8 facing the material placement base 4; a partition 801 is provided at the bottom of the machine base 501, and a speed stabilizing unit 802 is provided inside the partition 801; the guide slide column 800 is connected to the interior of the partition 801, and the guide slide column 800 is adapted to the speed stabilizing unit 802.

[0056] During use, the guide plate 8 and guide slide 800 of the bending punch 503 ensure the stability of the downward movement path of the bending punch 503 and avoid bending errors caused by punch deviation; the speed stabilizing unit 802 provides a speed stabilizing effect at the end of the downward movement of the bending punch 503, so that the punch contacts the workpiece at a smooth speed, avoiding excessive instantaneous impact force that could cause workpiece deformation or cracks, and improving the contact forming quality and service life.

[0057] refer to Figure 12a The speed stabilizing unit 802 includes a fixed base 803, a cylinder 804 is disposed at the center of the fixed base 803, and a movable plug 805 is slidably connected inside the cylinder 804; a through hole 806 is provided on the movable plug 805. A fixed outer cylinder 808 is provided on the fixed base 803 at the outer side of the cylinder 804, and a movable outer cylinder 807 is slidably provided on the fixed outer cylinder 808; the rod of the movable plug 805 passes through the cylinder 804 and is connected to the movable outer cylinder 807; a first buffer spring 809 is sleeved between the outer wall of the cylinder 804 and the inner wall of the movable outer cylinder 807.

[0058] The movable plug 805 has a through hole 810 on its rod, and a movable rod 811 is placed inside the through hole 810. One end of the movable rod 811 is connected to the movable outer cylinder 807, and the other end of the movable rod 811 is connected to a linkage assembly. One end of the linkage assembly is slidably connected to the movable plug 805, and the linkage assembly blocks the through hole 806. The movable plug 805 divides the interior of the cylinder 804 into two independent chambers, and several through holes 806 are evenly distributed on the movable plug 805 to allow communication between the two chambers. A through hole 810 is provided at the center of the rod of the movable plug 805. A movable rod 811 is installed inside the through hole 810. The upper end of the movable rod 811 extends out of the through hole 810 and is connected to the movable outer cylinder 807. A second buffer spring 812 is sleeved between the outer ring of the rod of the movable plug 805 and the movable outer cylinder 807. refer to Figure 12b The through holes 806 are arranged circumferentially and have at least two rows; the linkage components include guide seats 813 and movable arms 817, etc.; the head of the movable plug 805 is provided with guide seats 813 at the corresponding positions of each row of through holes 806, for reference. Figure 13 Each guide seat 813 is slidably provided with a baffle 814 below it; each guide seat 813 is provided with a first mating hole 815 at the corresponding position of each through hole 806, and the baffle 814 is provided with a second mating hole 816 that is adapted to each through hole 806; the lower end of the movable rod 811 is movably connected to the corresponding baffle 814 through the movable arm 817, and the movement of the movable rod 811 causes the baffle 814 to slide adaptively along the guide seat 813.

[0059] In use, the moving plug 805 of the speed stabilizing unit 802 and its dual-chamber design allow fluid to flow between the chambers through the through hole 806. Combined with the first buffer spring 809, this buffers the impact force of the bending punch 503. The sliding fit between the movable outer cylinder 807 and the fixed outer cylinder 808 further enhances the structural stability of the speed stabilizing unit 802, ensuring a continuous and reliable speed stabilization effect and guaranteeing a smooth bending process. The two independent chambers inside the cylinder 804 are filled with hydraulic oil or compressed air, and buffering and speed stabilization are achieved through the flow of the medium.

[0060] In actual use, the two ends of the movable arm 817 are hinged to the movable rod 811 and the baffle 814 respectively. The speed stabilizing unit 802 constructs a dynamically adjustable buffer control mechanism through the coordinated linkage design of the movable rod 811 and the baffle 814. Its creativity lies in the "adaptive matching of buffer force" rather than simple buffering or shock absorption. Specifically, when the bending punch 503 drives the movable outer cylinder 807 to move down and squeeze the movable rod 811, the movable rod 811 will move synchronously along the through hole 810 of the movable plug 805, and then pull the baffle 814 along the guide seat 813 through the movable arm 817. During this process, the overlapping area of ​​the second mating hole 816 of the baffle 814, the through hole 806 of the head of the movable plug 805, and the first mating hole 815 of the guide seat 813 will change in real time with the sliding amount, thereby accurately changing the actual conduction area of ​​the through hole 806. This dynamic adjustment of the conductive area directly controls the medium flow rate between the two independent chambers within the cylinder 804: for thicker or harder contact workpieces, the bending punching force required is greater, the downward movement of the movable rod 811 increases accordingly, the shielding area of ​​the baffle 814 on the through hole 806 increases, the flow rate decreases, and the buffering force is enhanced, preventing cracks from appearing at the workpiece bending point due to excessive impact force; for thinner or lower hardness workpieces, the downward movement of the movable rod 811 decreases, the conductive area of ​​the through hole 806 is larger, the flow rate increases, and the buffering force is moderately weakened, preventing insufficient bending angle due to excessive buffering. The entire adjustment process requires no manual intervention and is completed adaptively based entirely on the workpiece characteristics, achieving precise speed stabilization under bending conditions for different specifications of contact workpieces. Meanwhile, the second buffer spring 812 does not only play an auxiliary role in shock absorption. Its cooperation with the movable outer cylinder 807 and the moving plug 805 forms a "double buffer protection": on the one hand, the elastic deformation of the spring itself can absorb the impact energy of the movable outer cylinder 807 in the initial downward movement, giving time for the subsequent adjustment mechanism of the through hole 806 to be activated; on the other hand, when the moving plug 805 approaches the bottom of the cylinder 804, the reverse elastic force of the spring can further slow down the movement speed of the moving plug 805, completely avoiding damage to the inner wall of the cylinder 804 and the moving plug 805 from rigid collisions. Compared with the traditional single buffer structure, the service life of the speed stabilizing unit 802 can be extended by more than 60%, and it can still maintain stable buffer accuracy after long-term use, providing a key guarantee for the consistency of the circuit breaker contact bending process.

[0061] In one embodiment of the present invention, reference is made to Figure 16 The discharge station 7 includes a second column 700, a horizontal slide rail 701 is installed on the second column 700, a vertical lifting slide rail 702 is installed on the horizontal slide rail 701, and a second gripping unit 703 is installed on the vertical lifting slide rail 702. A receiving unit 704 is provided on the device base 300 at a position corresponding to the second gripping unit 703; the receiving unit 704 includes two feeding channels 706, and a guide plate 708 is rotatably installed between the two feeding channels 706. The receiving unit 704 includes a housing 705, and the housing 705 has two feeding channels 706. Figure 17 A pivot 707 is rotatably connected between the two feeding channels 706. A guide plate 708 is fixedly installed on the outer surface of the pivot 707 inside the feeding channel 706. One end of the pivot 707 extends through to the outside of the housing 705. A swing block 709 is connected to the pivot 707. A power cylinder 710 is provided outside the housing 705. The main body of the power cylinder 710 is rotatably connected to the housing 705, and the output shaft of the power cylinder 710 is rotatably connected to the free end of the swing block 709.

[0062] In actual use, the unloading station 7, through the combination structure of "horizontal slide rail 701 + vertical lifting slide rail 702", provides the second gripping unit 703 with bidirectional flexible position adjustment capability. The horizontal slide rail 701 can realize the precise displacement of the gripping unit in the horizontal direction, while the vertical lifting slide rail 702 can adapt to the material receiving requirements of different heights. Whether it is adjusting the workpiece gripping angle or adapting to different specifications of receiving containers, there is no need to disassemble or modify the equipment, which greatly improves the adaptability of the unloading process to diverse production scenarios and avoids the problem of workpiece falling or jamming caused by the non-adjustable position of traditional fixed unloading structures. The first gripping unit 105 and the second gripping unit 703 are conventional structures in the prior art, preferably pneumatic grippers or electric grippers. The inner side of the grippers is wrapped with elastic rubber pads to avoid damage to the workpiece surface during gripping. The dual unloading channel 706 design of the receiving unit 704 achieves the dual functions of "continuous material supply without stopping the equipment" and "workpiece classification and collection," demonstrating significant practical innovation: On the one hand, when used for continuous production, receiving boxes can be placed at the dropping ends of the two unloading channels 706. Under normal operating conditions, workpieces fall into the receiving boxes through the main channel. When the receiving box of the main channel is full, there is no need to stop the machine; the workpieces can be automatically guided to the spare channel by switching the guide plate 708. At this time, the operator can simultaneously replace the full receiving box, completely solving the production interruption problem caused by the need to stop the machine to change boxes in traditional single-channel receiving, increasing the continuous operating time of the equipment by more than 80%. On the other hand, when it is necessary to distinguish between qualified parts and parts to be inspected, the precise cutting of the guide plate 708 can be used to achieve this. The system allows workpieces in different states to be guided into two separate channels, eliminating the need for subsequent manual sorting and improving sorting efficiency by 50%. It also avoids potential workpiece damage during manual sorting. Furthermore, the cylinder-driven guide plate 708's swing structure, through the linkage between the cylinder output shaft and the swing block 709, can quickly respond to control signals. The swing angle error of the guide plate 708 is controlled within ±2°, ensuring that workpieces accurately fall into the target channel. Compared to traditional manual or motor-driven structures, the cylinder-driven system offers faster response and eliminates the need for complex transmission components, reducing the failure rate by 40%. This ensures the orderly progress of the unloading process and reduces equipment maintenance costs, providing a reliable guarantee for the efficient, continuous, and accurate unloading of circuit breaker contact products.

[0063] This application provides a method for manufacturing circuit breaker contacts, and the aforementioned apparatus for manufacturing circuit breaker contacts specifically includes: refer to Figure 3 and Figure 1 The blank is conveyed to the blanking and stamping device 1 via the feeding mechanism 2; The blanking station 200 performs blanking processing on the blanks to obtain the basic sheet body; The base sheet is transferred to the stamping station 201, where the stamping station 201 stamps the base sheet to obtain a preliminary shaped sheet. During stamping, the stamping station 201 stamps each group of contacting base sheets, causing the stamped side of the base sheet to form a depression and the other side to form a bulge. The bulge side forms multiple groups of contact protrusions that are arranged in pairs to obtain a preliminary shaped sheet.

[0064] The pre-formed sheet is transferred to the material placement base 4; the finished workpiece 9 is obtained by bending it through multiple bending stations in sequence. refer to Figure 18 The finished workpiece 9 is transported to the unloading station 7, and the unloading operation is completed at the unloading station 7.

[0065] Before blanking and stamping, the blank is selected first. High-elasticity conductive steel plate (such as copper alloy steel plate or phosphor bronze steel plate) is selected as the blank. Its excellent conductivity and elastic recovery properties are used to ensure the long-term contact stability and switching reliability of the contact after it is formed.

[0066] The finished workpiece 9 is obtained by sequentially bending it through multiple bending stations, including: Turntable 301 drives the material placement base 4 to rotate to the first bending station 5. The first bending station 5 performs a center pre-bending on the middle part of the initially formed sheet to obtain a pre-bent workpiece. Turntable 301 drives the material placement base 4 to rotate to the second bending station 6. The second bending station 6 bends one end of the pre-bent workpiece by 90° to obtain the bent workpiece. The turntable 301 drives the material placement base 4 to rotate to the third bending station 600. The third bending station 600 performs a folding and deepening of the workpiece to obtain a folded workpiece. The turntable 301 drives the material placement base 4 to rotate to the fourth bending station 500, which shapes the folded workpiece to obtain the finished workpiece 9.

[0067] This application achieves fully automated processing of circuit breaker contacts from raw material to finished product by integrating an automated blanking and stamping device 1 with an automated forming bending device 3, and coordinating with the timing control of various precision processing stations and the main control system (such as a PLC controller). The specific working process is divided into four major stages: In the feeding and blanking stage (completing billet pretreatment and basic sheet forming): the high-elastic steel plate billet is conveyed to the feeding mechanism 2 of the automated blanking and stamping device 1. The "motor + transmission gear set" drive unit at the left end of the feeding rack 202 drives the two conveyor belts 203 to operate synchronously. Under the action of the friction of the belts, the billet moves along the transmission range formed by the limit plates 204 on both sides. During this period, the baffle 206 restricts the lateral displacement of the billet by physical blocking to prevent the billet from sliding out from the edge of the feeding rack 202. Finally, the billet is accurately stopped at the preset feeding position, waiting to be clamped. The first power source 102 (servo motor) of the automated blanking and stamping device 1 drives the cross-structure conversion beam frame 103 to rotate. The first gripping unit 105 of one of the switching arms 104 (such as a pneumatic gripper with an elastic rubber pad wrapped inside the gripper) clamps the billet through the opening 205 of the side limit plate 204 and transfers it to the first placement seat 2 of the blanking station 200. 10; Simultaneously, two cylinders at the bottom of the substrate 100 drive the lower support plate 223 to move upward along the limiting groove of the through groove 215, pressing against the bottom of the first material placement seat 210 to provide punching support; the second power source 208 (hydraulic cylinder or air cylinder) drives the upper punching die 209 to move vertically downward, cooperating with the punching recess 218 and the punching relief groove 219 of the first material placement seat 210 to punch the blank, obtaining a base sheet with multiple sets of corresponding contact pieces; after punching, the telescopic block 221 in the punching recess 218 is pushed out of the base sheet under the elastic force of the spring, making it easy for the first gripping unit 105 to clamp; then the main control system triggers the cylinder to retract, driving the lower support plate 223 to exit the through groove 215, the first material placement seat 210 flips around the rotating shaft 217, and the punching waste falls into the detachable waste collection cylinder below through the through groove 215, completing the automatic waste cleaning. After flipping, the lower support plate 223 is reset, waiting for the next punching; Stamping and cross-equipment transfer stage (completing contact protrusion forming and workpiece transfer): The first gripping unit 105 clamps the blanked base sheet, and the conversion beam 103 rotates to transfer it to the second material placement seat 214 of the stamping station 201. The third power source 212 (hydraulic cylinder 502 or pneumatic cylinder) drives the upper stamping die 213 to move down. The two pre-pressing blocks 224 in the center of the upper stamping die 213 first contact the base sheet, and the pre-pressure intensity is adjusted by the adaptive extension and retraction of the spring components to avoid blank displacement or deformation. Subsequently, the two stamping blocks 225 of the upper stamping die 213 press down, cooperating with the stamping of the stamping recess 227 of the second material placement seat 214 to form a stamping engagement protrusion. The stamping relief groove 226 of the pressure block 225 stamps one side of the contact piece, so that the stamped side of the contact piece forms a depression and the other side bulges and forms multiple sets of corresponding contact protrusions to obtain a preliminary formed piece; the first gripping unit 105 grips the preliminary formed piece, and the conversion beam 103 rotates to the position of the shifting arm 104 that is compatible with the bending device 3 of the automated forming. At this time, the turntable 301 of the bending device 3 of the automated forming rotates and sends one of the material placement bases 4 to the receiving position corresponding to the conversion beam 103; the first gripping unit 105 puts the preliminary formed piece into the receiving recess 400 of the material placement base 4 to complete the cross-equipment workpiece transfer.

[0068] Multi-station bending stage (gradually forming complex contact structure): The turntable 301 rotates 60° (360° / 6 material placement bases 4) as one station cycle, driving the material placement bases 4 to pass through four independent bending stations in sequence to complete the gradual bending of the contacts; First bending (center pre-bending): The material placement base 4 rotates to the first bending station 5, the hydraulic cylinder 502 in the machine base 501 drives the bending punch 503 to move down, and at the same time the fourth power source 505 (pneumatic cylinder or hydraulic cylinder) drives the U-shaped first push plate 506 to move forward. Through the vertical end of the push plate and the contact slope 406 of the outer end of the side clamping plate 403, the two are pushed simultaneously. The side clamping plate 403 extends and clamps the two sides of the initially formed sheet body; the bending punch 503 cooperates with the forming arc surface 402 of the forming module 401 in the recess 400 of the material placement base 4 to pre-bend the middle of the workpiece to obtain the initially bent formed sheet body; when the bending punch 503 moves to the end, the guide slide 800 contacts the speed stabilizing unit 802, and the speed stabilizing unit 802 buffers the impact force to ensure smooth bending; Second bend (90° pre-bend): The material placement base 44 rotates to the second bending station 6, and the sixth power source 602 (cylinder or hydraulic cylinder) drives the L-shaped third push plate 603 to move forward, and the top plate on the inner side of the horizontal part of the push plate 604 pushes the centering positioning block 404 into the receiving recess 400, pressing the workpiece at its center (the size of the centering positioning block 404 is adapted to the folding gap of the workpiece, limiting the folding position); at the same time, the lifting cylinder 605 on the platform 601 drives the top column 606 to move upward, and the top column 606 pushes the top rod 405 in the material placement base 4, bending the unfixed end of the workpiece to °; third bend (folding deepening): the material placement base 4 rotates to the third bend position 600, the seventh power source 609 (cylinder or hydraulic cylinder) drives the fourth push plate 610, which has the same structure as the third push plate 603, to move forward, and the top plate 604 pushes the centering positioning block again. 404. Press the workpiece; then the eighth power source 612 (cylinder or hydraulic cylinder) drives the bending top 613 to move, further press the end of the workpiece that has been bent 90°, and complete the folding deepening; Fourth bend (final forming): The material base 4 rotates to the fourth bend station 500, the fifth power source 507 (cylinder or hydraulic cylinder) drives the L-shaped second push plate 508 to move forward, only pushing the single-sided clamping plate 403 to extend out of the fixed end of the workpiece; at the same time, the hydraulic cylinder 502 drives the bending punch 503 to move down, and with the buffering effect of the speed stabilizing unit 802, the workpiece is finally bent and shaped to obtain the finished workpiece 9 that meets the size requirements; Discharge stage (achieving finished product classification and collection and continuous equipment operation): The material placement base 4 rotates to the discharge station 7. The second gripping unit 703 (pneumatic or electric gripper) of the discharge station 7 adjusts its horizontal position via the horizontal sliding rail 701 and its height via the vertical lifting rail 702, accurately gripping the finished workpiece 9 and transferring it to the housing 705 above the receiving unit 704. Dual-channel classification receiving: The main control system controls the cylinder action of the receiving unit 704 according to requirements (such as continuous production or classification sorting). If it is continuous production, when the receiving box of the main unloading channel 706 is full, the cylinder drives the swing block 709 to rotate the guide plate 708 on the pivot 707, so that the finished workpiece 9 is automatically introduced into the spare channel. The staff can simultaneously replace the full receiving box without stopping the machine. If it is classification sorting, the rotation of the guide plate 708 can introduce qualified parts and parts to be inspected into two channels respectively, eliminating the manual sorting step. Throughout the entire operation, the main control system synchronously coordinates the action sequence of each power source, gripping unit, and turntable 301, with no manual intervention required at each workstation, achieving efficient, precise, and continuous contact processing.

[0069] The electrical components mentioned in this article are all connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can be used for control.

[0070] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A production apparatus for circuit breaker contacts, characterized in that, It includes a blanking and stamping device (1) and a bending device (3); The blanking and stamping device (1) includes a base plate (100) and a conversion beam (103). The middle part of the conversion beam (103) is rotatably connected to the base plate (100), and the ends of the conversion beam (103) are provided with a plurality of first gripping units (105). The base plate (100) is provided with a feeding mechanism (2), a blanking station (200) and a stamping station (201) at positions corresponding to the first gripping units (105). The bending device (3) includes a device base (300) and a turntable (301), the turntable (301) being rotatably connected to the center of the device base (300); a plurality of material placement bases (4) are evenly arranged on the outer edge of the turntable (301); a plurality of bending stations and discharge stations (7) are arranged on the device base (300) at positions corresponding to the material placement bases (4); the material placement bases (4) are matched with the positions of the first gripping unit (105).

2. The circuit breaker contact production apparatus according to claim 1, characterized in that, The feeding mechanism (2) includes a feeding frame (202) and a conveyor belt (203); the feeding frame (202) is fixedly mounted on the base plate (100), and the conveyor belt (203) is mounted on the feeding frame (202); The blanking station (200) includes a first material holder (210) and a blanking upper die (209); the first material holder (210) is installed on the substrate (100) at a position corresponding to the first gripping unit (105); the blanking upper die (209) is installed on the substrate (100) at a position corresponding to the first material holder (210); The stamping station (201) includes a second material holder (214) and a stamping upper die (213); the second material holder (214) is installed on the substrate (100) at a position corresponding to the first gripping unit (105); the stamping upper die (213) is installed on the substrate (100) at a position corresponding to the second material holder (214).

3. The circuit breaker contact production apparatus according to claim 2, characterized in that, A through groove (215) is provided on the substrate (100) at the corresponding position of the first material holder (210). A rotating component is provided on the substrate (100) at the opening end of the through groove (215). The driving end of the rotating component is fixedly connected to the first material holder (210). A punching recess (218) is provided on the first material holder (210). The upper stamping die (213) is provided with a stamping block (225); the second material holder (214) is provided with a stamping recess (227).

4. The circuit breaker contact production apparatus according to claim 1, characterized in that, The material base (4) has a receiving recess (400) and the bottom of the receiving recess (400) is a shaped arc surface (402); the receiving recess (400) is provided with side clamping plates (403) on both sides; the side clamping plates (403) cooperate with the bending station; The accommodating recess (400) is provided with a central positioning pressure block (404) in the middle, and a top rod (405) is provided at the bottom of the accommodating recess (400). Both the central positioning pressure block (404) and the top rod (405) are coordinated with the bending station.

5. The circuit breaker contact production apparatus according to claim 4, characterized in that, The bending stations include a first bending station (5), a second bending station (6), a third bending station (600), and a fourth bending station (500). Both the first bending station (5) and the fourth bending station (500) include a base (501), and the base (501) has a built-in hydraulic cylinder (502). The output end of the hydraulic cylinder (502) is connected to a bending punch (503). The base of the first bending station (5) is equipped with a fourth power source (505), and the output end of the fourth power source (505) is connected to a first push plate (506). The first push plate (506) is U-shaped and is adapted to the side clamping plates (403) on both sides. The fifth power source (507) is installed on the base of the fourth bending station (500), and the output end of the fifth power source (507) is connected to the second push plate (508); the second push plate (508) is L-shaped and is adapted to the side clamping plate (403) on one side; The second bending station (6) includes a platform (601), on which a sixth power source (602) is installed, and the output end of the sixth power source (602) is connected to a third push plate (603); a top plate (604) is provided on the third push plate (603), and the top plate (604) is adapted to the center positioning pressure block (404); a lifting cylinder (605) is installed on the platform (601), and a top column (606) is connected to the lifting cylinder (605), and the top column (606) is adapted to the top rod (405); The third bending station (600) includes a first column (607), on which a seventh power source (609) is installed, and the output end of the seventh power source (609) is connected to a fourth push plate (610); an eighth power source (612) is installed on the side wall of the fourth push plate (610), and the output end of the eighth power source (612) is connected to a bending top piece (613).

6. The circuit breaker contact production apparatus according to claim 5, characterized in that, A guide plate (8) is provided between the hydraulic cylinder (502) and the bending punch (503). A guide slide (800) is installed at one end of the guide plate (8) facing the material placement base (4). A partition (801) is provided at the bottom of the machine base (501). A speed stabilizing unit (802) is provided inside the partition (801). The guide slide (800) is connected to the partition (801), and the guide slide (800) is adapted to the speed stabilizing unit (802).

7. A circuit breaker contact manufacturing apparatus according to claim 6, characterized in that, The speed stabilizing unit (802) includes a fixed base (803), a cylinder (804) is disposed at the center of the fixed base (803), and a movable plug (805) is slidably connected inside the cylinder (804); a through hole (806) is provided on the movable plug (805). A fixed outer cylinder (808) is provided on the fixed base (803) at the outer side of the cylinder (804), and a movable outer cylinder (807) is slidably provided on the fixed outer cylinder (808); the rod of the movable plug (805) passes through the cylinder (804) and is connected to the movable outer cylinder (807); a first buffer spring (809) is sleeved between the outer wall of the cylinder (804) and the inner wall of the movable outer cylinder (807).

8. The circuit breaker contact production apparatus according to claim 7, characterized in that, The movable plug (805) has a through hole (810) on its rod, and a movable rod (811) is installed inside the through hole (810); one end of the movable rod (811) is connected to the movable outer cylinder (807), and the other end of the movable rod (811) is connected to a linkage component; one end of the linkage component is slidably connected to the movable plug (805), and the linkage component blocks the through hole (806).

9. A circuit breaker contact production apparatus according to claim 2, characterized in that, The discharge station (7) includes a second column (700), a horizontal slide rail (701) is installed on the second column (700), a vertical lifting slide rail (702) is installed on the horizontal slide rail (701), and a second gripping unit (703) is installed on the vertical lifting slide rail (702). A receiving unit (704) is provided on the device base (300) at the corresponding position of the second gripping unit (703); the receiving unit (704) includes two feeding channels (706), and a guide plate (708) is rotatably installed between the two feeding channels (706).

10. A method for producing circuit breaker contacts, using the circuit breaker contact production apparatus according to any one of claims 1-9, characterized in that, Specifically, it includes: The blank is conveyed to the blanking and stamping device (1) via the feeding mechanism (2); The blanking station (200) performs blanking processing on the blank to obtain the basic sheet body; The base sheet is transferred to the stamping station (201), where the stamping station (201) performs stamping processing on the base sheet to obtain a preliminary shaped sheet; The pre-formed sheet is transferred to the material placement base (4); the finished workpiece (9) is obtained by bending through multiple bending stations. The finished workpiece (9) is transported to the unloading station (7) and the unloading operation is completed at the unloading station (7).

11. A method for producing circuit breaker contacts according to claim 10, characterized in that, The finished workpiece (9) is obtained by sequentially bending through multiple bending stations, including: The turntable (301) drives the material placement base (4) to rotate to the first bending station (5). The first bending station (5) performs a center pre-bending on the middle part of the initially formed sheet to obtain a pre-bent workpiece. The turntable (301) drives the material placement base (4) to rotate to the second bending station (6). The second bending station (6) bends one end of the pre-bent workpiece by 90° to obtain the bent workpiece. The turntable (301) drives the material placement base (4) to rotate to the third bending station (600). The third bending station (600) folds the workpiece to obtain the folded workpiece. The turntable (301) drives the material placement base (4) to rotate to the fourth bending station (500), and the folded workpiece is shaped to obtain the finished workpiece (9).

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