Relay magnetic circuit installation equipment

Abstract

The invention provides relay magnetic circuit installation equipment, and belongs to the technical field of relay manufacturing. The yoke mounting structure, the coil mounting structure, the iron core mounting structure and the iron core riveting structure are sequentially arranged in the conveying direction of the conveying belt, and the assembly seats with the assembly stations are sequentially conveyed to the yoke mounting structure, the coil mounting structure, the iron core mounting structure and the iron core riveting structure through the conveying belt; in this way, automatic feeding of the yoke, the coil assembly and the iron core in sequence in the assembly station is achieved, the small head end of the iron core is riveted through the iron core riveting structure after feeding is completed, the coil assembly can be stably limited to the yoke through the iron core, automatic assembly of the relay magnetic circuit is achieved, manual participation is not needed, the labor cost is lower, and the production efficiency is improved. The assembling efficiency is higher, the problem of misoperation easily caused by manual assembling is also avoided, the product quality is ensured, and large-scale application of relays is facilitated.

Description

Technical Field

[0001] This invention relates to the field of relay manufacturing technology, specifically to a relay magnetic circuit mounting device. Background Technology

[0002] Relays, as commonly used electronic components in circuit control systems, can utilize their internal low-voltage circuits to achieve the contact or separation of moving and stationary contacts, thereby enabling control of external circuits. This not only improves control safety but also meets the needs of remote control, making them widely used in circuit control systems.

[0003] Currently, commercially available relays typically include a small electromagnetic relay disclosed in patent CN105448600B, which comprises a magnetic circuit system and a base. The base includes a mounting section for the relay's magnetic circuit system. The magnetic circuit system includes an electromagnetic system and an armature. The electromagnetic system includes an iron core and a yoke. The iron core is inserted into the coil assembly. The yoke is arranged in an L-shape, with a mounting hole at one end. The iron core has a T-shaped structure. When the iron core is inserted into the coil assembly, the larger end of the iron core abuts against one end of the coil assembly's frame. The smaller end of the iron core passes through the coil assembly and is inserted into the mounting hole. The end of the smaller end inserted into the mounting hole extends beyond the mounting hole of the yoke and is then pressed to form a second larger end. In other words, the coil assembly is assembled onto the yoke using the iron core. Therefore, when manufacturing the magnetic circuit of a relay, the yoke, coil assembly, and iron core need to be assembled together and then fixed by riveting. The current assembly of the aforementioned magnetic circuit typically relies on manual labor. The machined yoke, coil assembly, and core are placed on a workbench, and a press with an upward pusher is placed on the workbench. Due to the small size of the relay, the operator uses tweezers to pick up the yoke and place it in the placement station. Then, the coil assembly is picked up and placed on the yoke, followed by the core being picked up and inserted into the coil assembly. A pad is used to hold the top of the core in place, and then the press is activated to lift it up. The upward pusher of the press rivets the small end of the core to assemble the magnetic circuit. After assembly, the pad is removed, and the assembled magnetic circuit is taken out of the placement station using tweezers. Although this method can meet the assembly requirements of the magnetic circuit, it requires a large amount of manual labor, which is not only inefficient and wasteful of manpower but also prone to errors, affecting product quality. Summary of the Invention

[0004] To address the aforementioned problems in the existing technology, this invention aims to provide a relay magnetic circuit installation device. This device comprises a yoke mounting structure, a coil mounting structure, an iron core mounting structure, and a core riveting structure arranged sequentially along a conveyor belt. As the relay base passes through these structures on the conveyor belt, the yoke, coil assembly, and iron core are sequentially installed onto the base. The core riveting structure then rivets the small end of the iron core, achieving automated assembly of the relay magnetic circuit without manual intervention. This improves assembly efficiency, eliminates labor costs, avoids operational errors, and ensures product quality.

[0005] The specific technical solution is as follows: A relay magnetic circuit mounting device, characterized by the following features: The transmission structure has a transmission belt arranged in one direction, and a number of assembly seats are provided on the transmission belt, and each assembly seat is provided with an assembly station. The yoke loading structure is located on one side of the conveyor belt. The yoke loading structure includes a yoke feeding tray, a yoke transfer assembly, a yoke distribution assembly, and a yoke feeding assembly. The yoke feeding tray is a vibrating feeding tray. The yoke transfer assembly is located at the outlet of the yoke feeding tray. At the same time, the yoke distribution assembly is installed in the extension direction of the outlet of the yoke feeding tray. The yoke transfer assembly is located between the outlet of the yoke feeding tray and the yoke distribution assembly. The yoke feeding assembly is located between the yoke distribution assembly and the conveyor belt. The coil mounting structure is located on one side of the conveyor belt and behind the yoke structure along the conveying direction of the conveyor belt. The coil mounting structure includes a material tray rotating assembly, a first coil transfer assembly, a coil moving assembly, a second coil transfer assembly, and a coil distributing assembly. The material tray rotating assembly is spaced apart on the side of the conveyor belt along the conveying direction of the conveyor belt. A coil moving assembly is located between the material tray rotating assembly and the conveyor belt. A sliding table is provided on the coil moving assembly, and several material storage stations are provided on the sliding table. The first coil transfer assembly is located between the coil moving assembly and the material tray rotating assembly. The coil distributing assembly is located between the coil moving assembly and the conveyor belt. The second coil transfer assembly is located between the coil moving assembly and the conveyor belt. The iron core mounting structure is located on one side of the conveyor belt and along the conveying direction of the conveyor belt. The iron core mounting structure is located behind the coil mounting structure. The iron core mounting structure includes an iron core feeding tray, a guide tube, and an iron core feeding assembly. The iron core feeding tray is located on the side of the conveyor belt. A guide tube is provided at the outlet of the iron core feeding tray. An iron core feeding assembly is provided between the guide tube and the conveyor belt, and the feeding nozzle of the iron core feeding assembly is located above the conveyor belt. The riveted core structure is located behind the core assembly along the conveyor belt's transmission direction. The riveted core structure includes an upper abutment component and a lower pushing component. The upper abutment component and the lower pushing component are arranged opposite each other in the vertical direction and both move up and down. The upper abutment component has a pressure block, and the lower pushing component has a pressing head. In use, the pressure block moves down to press against the large end of the core, and the pressing head moves up to rivet the small end of the core.

[0006] The aforementioned relay magnetic circuit installation device includes a yoke transfer assembly, a yoke feeding assembly, a first coil transfer assembly, and a second coil transfer assembly, each comprising a carriage, a guide rail, a slide block, a transfer drive, a transfer lifting drive, and grippers. The carriage is arranged horizontally in one direction. The carriage of the yoke transfer assembly is positioned above the yoke feeding assembly, the carriage of the yoke feeding assembly is positioned above the conveyor belt, the carriage of the first coil transfer assembly is positioned above the material tray rotation assembly, and the carriage of the second coil transfer assembly is positioned above the conveyor belt. The guide rail is mounted on the carriage, and the slide block is slidably mounted on the guide rail. The carriage is equipped with a transfer drive and connected to the slide block. The slide block is vertically mounted with a transfer lifting drive, and the drive unit of the transfer lifting drive is equipped with grippers.

[0007] In the aforementioned relay magnetic circuit installation device, two sets of grippers are spaced apart on the slide of the second coil transfer assembly. When one set of grippers moves above the sliding table of the coil transfer assembly, the other set of grippers is located above the coil distribution assembly, or when one set of grippers moves above the coil distribution assembly, the other set of grippers is located above the conveyor belt.

[0008] In the aforementioned relay magnetic circuit installation device, the grippers of the first coil transfer assembly further include two clamping plates and coil positioning posts. Both ends of the drive unit of the transfer lifting driver of the first coil transfer assembly are provided with grippers. Several coil positioning posts are arranged at intervals at the bottom of the drive unit of the transfer lifting driver located between the two grippers. Clamping plates are provided between the gripping fingers on the same side of the two grippers.

[0009] The aforementioned relay magnetic circuit installation device includes a yoke distribution assembly and a coil distribution assembly, each comprising a distribution frame, a distribution track, a distribution driver, several distribution seats, and several connecting rods. The distribution frame has a distribution track along one direction, and several distribution seats are slidably arranged along the length of the distribution track. Each distribution seat has a distribution station where the transferred yoke or coil assembly can be placed. A connecting rod is provided between two adjacent distribution seats, and both ends of the connecting rod are provided with limit heads. The limit heads are located on opposite sides of the distribution seats. A distribution driver is installed on the distribution frame. Furthermore, one of the two outermost distribution seats is fixedly connected to the distribution track or distribution frame, while the other distribution seat is connected to the distribution driver.

[0010] The aforementioned relay magnetic circuit installation device includes a material tray rotating assembly comprising a rotating frame, a conveyor belt, a conveyor driver, a limit support seat, and a top material cylinder. The rotating frame is arranged horizontally in one direction, and conveyor belts are provided on both sides of the rotating frame. The conveyor driver is mounted on the rotating frame and is poweredly connected to the conveyor belts. Two sets of spaced limit support seats are provided at both ends of the rotating frame. The distance between the two limit support seats in the same set is consistent with the width or length of the material tray. A top material cylinder for lifting and lowering is provided at both ends of the rotating frame and between the two conveyor belts. The top material cylinder is located between the two limit support seats in the same set.

[0011] The aforementioned relay magnetic circuit installation device further includes a tray limiting part, which is located in the middle of the rotating frame. The tray limiting part includes a limiting frame, a telescopic limiting part, and a tilting limiting part. Two limiting frames are spaced apart in the middle of the rotating frame along the conveying direction of the conveyor belt. The telescopic limiting part and the tilting limiting part are respectively set on the two limiting frames. The distance between the telescopic limiting part and the tilting limiting part is consistent with the length or width of the tray. The telescopic limiting part is a telescopic cylinder arranged in the vertical direction. The tilting limiting part includes a tilting push rod, a tilting seat, and a tilting block. The tilting seat is installed on the corresponding limiting frame. The middle part of the tilting block is hinged to the tilting seat. The other end of the tilting seat is hinged to the tilting push rod. The other end of the tilting push rod is hinged to the limiting frame.

[0012] The aforementioned relay magnetic circuit installation equipment includes a core feeding assembly comprising a mounting plate, a core slide rail, a core carriage, a core feeding driver, core clamps, clamps, and a core pushing cylinder. The mounting plate is horizontally arranged, with a core slide rail mounted on the bottom of the mounting plate along one direction. A core carriage is slidably mounted on the core slide rail. Several core clamps are spaced apart on the core carriage, with the spacing between the clamps matching the spacing between assembly stations on adjacent assembly seats. When the core carriage slides on the core slide rail, it selectively moves above the conveyor belt. The core feeding driver is mounted on the mounting plate and poweredly connected to the core carriage. An clearance notch is provided at the end of the mounting plate closest to the conveyor belt. Above the clearance notch are several core pushing rods corresponding to the core clamping blocks. On the mounting plate, next to the clearance notch, are several core feeding ports corresponding to the core clamping blocks. Each core feeding port is connected to a guide tube. Each core clamping block has a storage hole arranged vertically in the middle. Each core clamping block has fingers hinged on both sides, with the non-hinged ends of the two fingers protruding towards the storage hole. Each finger has a semi-circular guide notch corresponding to the storage hole on its protruding part. When the two fingers are close together, the guide notches on the two fingers combine to form a circular guide hole. The diameter of the guide hole is smaller than the diameter of the large end of the core. The upper ends of the guide holes formed by the two fingers are flared.

[0013] The aforementioned relay magnetic circuit installation device further includes a core feeding assembly in its core mounting structure. This assembly comprises a support platform, a baffle, a movable block, a guide plate, a sliding stop, a sliding wheel, and a push drive. The support platform is positioned at the outlet of the core loading tray. A baffle is mounted on the support platform, and the outlet of the core loading tray passes through the baffle. A movable block is slidably mounted on the support platform, with one side of the movable block abutting against the baffle. Several material-retrieving notches are spaced apart on the side of the movable block closest to the baffle. As the movable block moves, different material-retrieving notches selectively connect to the outlet of the core loading tray. A material-retrieving notch is provided on the movable block, on the side of each material-retrieving notch facing away from the baffle. The device features a strip-shaped sliding hole, with a sliding stop block slidably installed within each hole. One end of the sliding stop block extends to the corresponding material picking notch. A guide plate, parallel to the support platform, is mounted on the baffle. Several inclined guide grooves are provided on the guide plate. A sliding wheel is installed on each sliding stop block, and one sliding wheel extends into an inclined guide groove. Several connecting holes are provided on the side of the support platform near the baffle. Each connecting hole is connected to a guide pipe. When the moving block moves, the material picking notch selectively aligns with the connecting hole. A push drive is mounted on the support platform and is powered by the moving block. Two sets of inclined guide grooves are provided, with the inclination directions of each set of inclined guide grooves being exactly opposite.

[0014] The aforementioned relay magnetic circuit installation device further includes a lower pushing assembly, which is arranged vertically upwards. A vertically upward extrusion head is mounted on the drive shaft of the press, and the top of the extrusion head is provided with several blades.

[0015] The positive effects of the above technical solution are: The aforementioned relay magnetic circuit installation equipment, through the sequential arrangement of a yoke mounting structure, a coil mounting structure, an iron core mounting structure, and an iron core riveting structure along the conveyor belt's transport direction, and the presence of several assembly stations on the conveyor belt, allows the relay base to be placed within the assembly stations. Under the influence of the conveyor belt, the assembly stations sequentially pass through the yoke mounting structure, coil mounting structure, iron core mounting structure, and iron core riveting structure, installing the yoke, coil assembly, and iron core onto the base. After loading, the small end of the iron core is riveted using the iron core riveting structure, ensuring the iron core stably restrains the coil assembly on the yoke and assembling the yoke onto the base. This achieves automated assembly of the relay magnetic circuit, eliminating the need for manual intervention, reducing labor burden, improving assembly efficiency, avoiding operational errors, resulting in better product quality, and facilitating the large-scale application of relays. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the yoke structure of an embodiment of a relay magnetic circuit mounting device according to the present invention; Figure 2This is a structural diagram of the coil mounting structure of an embodiment of the relay magnetic circuit mounting device of the present invention; Figure 3 This is a structural diagram of the core mounting structure of an embodiment of the relay magnetic circuit mounting device of the present invention; Figure 4 This is a structural diagram of the riveted core structure of an embodiment of a relay magnetic circuit mounting device of the present invention; Figure 5 This is a structural diagram of the gripper of the first coil transfer assembly according to a preferred embodiment of the present invention; Figure 6 This is a structural diagram of a coil feeding assembly according to a preferred embodiment of the present invention; Figure 7 This is a structural diagram of a preferred embodiment of the material tray rotation assembly of the present invention; Figure 8 This is a structural diagram of the tray limiting part according to a preferred embodiment of the present invention; Figure 9 This is a structural diagram of a core feeding assembly according to a preferred embodiment of the present invention; Figure 10 This is a structural diagram of a core feeding assembly according to a preferred embodiment of the present invention.

[0017] In the attached diagram: 1. Yoke mounting structure; 11. Yoke loading tray; 12. Yoke transfer assembly; 13. Yoke distribution assembly; 2. Coil mounting structure; 21. Tray rotation assembly; 22. First coil transfer assembly; 23. Coil moving assembly; 24. Second coil transfer assembly; 25. Coil distribution assembly; 211. Rotating frame; 212. Conveyor belt; 213. Conveyor driver; 214. Limiting support seat; 215. Top material cylinder; 216. Tray limiting part; 221. Transfer lifting driver; 222. Clamping plate; 223. Coil positioning column; 251. Distribution frame; 252. Distribution track; 253. Distribution driver; 254. Distribution seat; 255. Connecting rod; 2161. Limiting frame; 2162. Telescopic limiting part; 2163. Tilting limiting part; 21631. Tilting Push rod; 21632, tilting seat; 21633, tilting block; 3, core mounting structure; 31, core feeding tray; 32, guide tube; 33, core feeding assembly; 34, core distributing assembly; 331, mounting plate; 332, core slide rail; 333, core carriage; 334, core feeding driver; 335, core clamping block; 336, finger; 337, core pushing cylinder; 335 1. Material storage hole; 341. Support platform; 342. Baffle; 343. Moving block; 344. Guide plate; 345. Sliding stop; 346. Sliding wheel; 347. Push drive; 3411. Connecting hole; 3431. Strip sliding hole; 3441. Inclined guide groove; 4. Riveted core structure; 41. Upper abutment assembly; 42. Lower pushing assembly; 411. Press block; 421. Press machine. Detailed Implementation

[0018] To make the technical means, creative features, objectives, and effects of this invention easier to understand, the following embodiments are provided in conjunction with the appendix. Figure 1 To be continued Figure 10 The technical solutions provided by this invention are described in detail, but the following content is not intended to limit this invention.

[0019] The relay magnetic circuit installation equipment provided in this embodiment includes: a transmission structure, a yoke mounting structure 1, a coil mounting structure 2, an iron core mounting structure 3, and an iron core riveting structure 4. The transmission structure has a conveyor belt arranged in one direction, providing conditions for the subsequent series connection of the yoke mounting structure 1, coil mounting structure 2, iron core mounting structure 3, and iron core riveting structure 4. Several assembly seats are provided on the conveyor belt, and each assembly seat has an assembly station. The assembly station restricts the subsequent placement of the yoke, coil assembly, and iron core, maintaining assembly stability. This allows the assembly seats with assembly stations to move with the conveyor belt during operation, ensuring that each subsequent assembly station can sequentially move to the yoke mounting structure 1, coil mounting structure 2, iron core mounting structure 3, and iron core riveting structure 4. This solves the problem of manually transferring workpieces to achieve connection between different processes, resulting in a more rational structural design.

[0020] Figure 1 This is a structural diagram of the yoke structure of an embodiment of a relay magnetic circuit mounting device according to the present invention. Figure 1 As shown, the yoke loading structure 1 is disposed on one side of the conveyor belt. The yoke loading structure 1 includes a yoke loading tray 11, a yoke transfer assembly 12, a yoke distribution assembly 13, and a yoke loading assembly. The yoke loading tray 11 is a vibrating loading tray. The yoke transfer assembly 12 is disposed at the outlet of the yoke loading tray 11. At the same time, the yoke distribution assembly 13 is installed in the extension direction of the outlet of the yoke loading tray 11, so that the yoke distribution assembly 13 can subsequently receive the yokes sent out from the outlet of the yoke loading tray 11. At this point, the yoke transfer assembly 12 is positioned between the outlet of the yoke loading tray 11 and the yoke distribution assembly 13. This allows the yokes, when fed from the outlet of the yoke loading tray 11, to be transferred through the yoke transfer assembly 12 to the yoke distribution assembly 13. The yoke distribution assembly 13 then distributes multiple yokes at predetermined intervals, adapting to scenarios where there are gaps between assembly stations on different assembly seats, thus providing conditions for transferring the yokes to assembly stations on different assembly seats. Furthermore, the yoke loading assembly is positioned between the yoke distribution assembly 13 and the conveyor belt, allowing the yokes separated by the yoke distribution assembly 13 to be picked up by the yoke loading assembly and transferred to assembly stations on different assembly seats on the conveyor belt, thereby meeting the automatic loading requirements of the yokes. Figure 2This is a structural diagram of the coil mounting structure of an embodiment of a relay magnetic circuit mounting device according to the present invention. Figure 2 As shown, the coil mounting structure 2 is located on one side of the conveyor belt, and along the conveying direction of the conveyor belt, the coil mounting structure 2 is located behind the yoke mounting structure 1. This allows the coil assembly to be placed on the yoke when the conveyor belt moves the assembly seat containing the yoke to the coil mounting structure 2, providing conditions for subsequent connection of the coil assembly to the yoke. At this time, the coil mounting structure 2 also includes a tray rotation assembly 21, a first coil transfer assembly 22, a coil movement assembly 23, a second coil transfer assembly 24, and a coil distribution assembly 25. The tray rotation assembly 21 is spaced apart along the conveyor belt along the conveying direction. The tray rotation assembly 21 transfers the tray containing the coil assembly to the side of the conveyor belt and removes the empty tray to meet the need for continuous conveying of coil assemblies. In addition, a coil moving assembly 23 is provided between the material tray rotation assembly 21 and the conveyor belt. A sliding table is provided on the coil moving assembly 23, and several storage stations are provided on the sliding table. A first coil transfer assembly 22 is located between the coil moving assembly 23 and the material tray rotation assembly 21, transferring coil components from the material tray on the material tray rotation assembly 21 to the storage stations on the sliding table. Furthermore, a coil distribution assembly 25 is located between the coil moving assembly 23 and the conveyor belt, allowing coil components placed in subsequent storage stations to be transferred to the coil distribution assembly 25. The coil distribution assembly 25 separates several coil components by a predetermined distance, thus accommodating situations where there are gaps between assembly stations on different assembly seats on the conveyor belt. Additionally, a second coil transfer assembly 24 is located between the coil moving assembly 23 and the conveyor belt, enabling the transfer of coil components from the sliding table to the coil distribution assembly 25, and also transferring coil components from the coil distribution assembly 25 to the conveyor belt, simultaneously achieving the transfer of coil components in two processes and improving the utilization rate of the structure. Figure 3 This is a structural diagram of the core mounting structure of an embodiment of a relay magnetic circuit mounting device according to the present invention. Figure 3As shown, the core loading structure 3 is located on one side of the conveyor belt, and along the conveying direction of the conveyor belt, it is positioned behind the coil loading structure 2. This allows the core to be inserted into the coil assembly via the core loading structure 3 when the conveyor belt moves the assembly containing the yoke and coil assembly to the core loading structure 3, thus meeting the automatic feeding requirements of the core. The core loading structure 3 includes a core loading tray 31, a guide tube 32, and a core loading assembly 33. The core loading tray 31 is located beside the conveyor belt. Preferably, the core loading tray 31 is a vibrating loading tray, enabling unidirectional feeding of the core. Furthermore, a guide tube 32 is provided at the outlet of the core loading tray 31, allowing the core fed from the outlet of the core loading tray 31 to enter the guide tube 32, thus facilitating the subsequent transfer of the core to the core loading assembly 33 via the guide tube 32. In addition, a core feeding assembly 33 is provided between the guide tube 32 and the conveyor belt, and the feeding nozzle of the core feeding assembly 33 is located above the conveyor belt, so that the feeding nozzle of the core feeding assembly 33 can be aligned vertically with the assembly station on the assembly seat on the conveyor belt, thereby enabling the core fed from the feeding nozzle of the core feeding assembly 33 to be inserted into the center hole of the coil assembly in the assembly station on the assembly seat on the conveyor belt, thus realizing the automatic feeding operation of the core. Figure 4 This is a structural diagram of the riveted core structure of an embodiment of a relay magnetic circuit mounting device according to the present invention. Figure 4 As shown, along the transmission direction of the conveyor belt, the riveting core structure 4 is located behind the core mounting structure 3, allowing the conveyor belt to transfer the assembly containing the yoke, coil assembly, and core to the riveting core structure 4, thus providing conditions for riveting the small end of the core. The riveting core structure 4 includes an upper abutment component 41 and a lower pushing component 42. The upper abutment component 41 and the lower pushing component 42 are arranged opposite each other in the vertical direction and both move up and down. The upper abutment component 41 has a pressure block 411, and the lower pushing component 42 has a pressing head. In use, the pressure block 411 moves down to press against the large end of the core, and the pressing head moves up to rivet the small end of the core, thereby forming a limiting structure at the small end of the core. This allows the limiting structures at the large and small ends of the core to stably connect the coil assembly to the yoke, meeting the automatic assembly requirements of the relay's magnetic circuit structure.

[0021] like Figure 1 and Figure 2As shown, the yoke transfer assembly 12, yoke feeding assembly, first coil transfer assembly 22, and second coil transfer assembly 24 all include a carriage, guide rail, slide block, transfer drive, transfer lifting drive 221, and grippers. The carriage is arranged horizontally in one direction. In this configuration, the carriage of the yoke transfer assembly 12 is positioned above the yoke feeding assembly 13, the carriage of the yoke feeding assembly is positioned above the conveyor belt, the carriage of the first coil transfer assembly 22 is positioned above the material tray rotation assembly 21, and the carriage of the second coil transfer assembly 24 is positioned above the conveyor belt. This ensures the carriage is positioned at a high level, avoiding interference with the operation of other structures. Furthermore, the guide rail is mounted on the carriage, and the slide block is slidably mounted on the guide rail. The guide rail provides guidance for the sliding of the slide block, maintaining its smooth movement. Simultaneously, a transfer drive is mounted on the carriage and connected to the slide block, providing power for the movement of the slide block on the guide rail. In addition, a transfer lifting driver 221 is mounted vertically on the slide, and a gripper is provided on the drive part of the transfer lifting driver 221. The gripper grips the yoke or coil assembly to meet the transfer requirements. It is worth noting that both the transfer drive and the transfer lifting driver 221 can be cylinders, hydraulic cylinders, or other similar structures. They can also be linear actuators composed of commonly available motors, lead screws, and nuts, as long as they meet the requirements of moving the slide on the guide rail and lifting the gripper. Therefore, the specific structure of the transfer drive and the transfer lifting driver 221 will not be described in detail here.

[0022] More specifically, the slide of the second coil transfer assembly 24 is provided with two sets of grippers spaced apart. When one set of grippers moves above the sliding table of the coil transfer assembly 23, the other set of grippers is located above the coil distribution assembly 25. Alternatively, when one set of grippers moves above the coil distribution assembly 25, the other set of grippers is located above the conveyor belt. This allows the coil assembly to be transferred between the coil distribution assembly 25 and the conveyor belt simultaneously when the second coil transfer assembly 24 is working and the coil assembly is transferred between the sliding table and the coil distribution assembly 25. This makes the transfer process more compact, the structure more efficient, and the processing efficiency higher.

[0023] Figure 5 This is a structural diagram of the gripper of the first coil transfer assembly according to a preferred embodiment of the present invention. Figure 2 and Figure 5As shown, the grippers of the first coil transfer assembly 22 also include two clamping plates 222 and coil positioning posts 223. Both ends of the drive unit of the transfer lifting driver 221 of the first coil transfer assembly 22 are equipped with grippers, creating a gap between the two grippers, thus providing conditions for simultaneously gripping multiple coil assemblies. Simultaneously, several spaced coil positioning posts 223 are provided at the bottom of the drive unit of the transfer lifting driver 221 located between the two grippers. This allows the coil assembly to be positioned by inserting the coil positioning posts 223 into the central hole of the coil assembly when gripping it from the tray. Furthermore, clamping plates 222 are provided between the gripping fingers on the same side of the two grippers, allowing the ends of the clamping plates 222 to connect with the gripping fingers on the same side of the two grippers. This ensures that when the two grippers move, the clamping plates 222 can move closer or further apart, thereby simultaneously gripping or releasing all coil assemblies between the two grippers, meeting the requirements for automatic coil transfer.

[0024] Figure 6 This is a structural diagram of a coil feeding assembly according to a preferred embodiment of the present invention. Figure 2 and Figure 6As shown, both the yoke feeding assembly 13 and the coil feeding assembly 25 include a feeding frame 251, a feeding track 252, a feeding driver 253, several feeding seats 254, and several connecting rods 255. The feeding frame 251 has a feeding track 252 arranged along one direction, and several feeding seats 254 are slidably arranged along the length of the feeding track 252. The distance between adjacent feeding seats 254 can be adjusted by moving the feeding seats 254 later. Each feeding seat 254 has a feeding station where the transferred yoke or coil assembly can be placed, thus ensuring that the distance between adjacent yokes or adjacent coil assemblies is adjusted synchronously when the feeding seat 254 moves. A connecting rod 255 is provided between two adjacent material distribution seats 254. Both ends of the connecting rod 255 are equipped with limiting heads. The limiting heads are located on the opposite sides of the material distribution seats 254, so that when the two material distribution seats 254 separate, the final distance between them can be determined by the limiting heads at both ends of the limiting heads, satisfying different material distribution requirements. In addition, a material distribution driver 253 is installed on the material distribution rack 251. One of the two outermost material distribution seats 254 is fixedly connected to the material distribution track 252 or the material distribution rack 251, while the other material distribution seat 254 is connected to the material distribution driver 253. This allows the material distribution seats 254 to be pushed together sequentially when the material distribution driver 253 moves the corresponding material distribution seat 254 towards the other material distribution seat 254, achieving mutual abutment of all material distribution seats 254 and satisfying the requirements of the yoke or coil assembly before material distribution. The feeding requirement is met. After feeding is completed, the corresponding feeding seat 254 can be pulled in the opposite direction by the feeding driver 253 to move away from the other feeding seat 254. The remaining feeding seats 254 are pulled in sequence by the connecting rod 255 to separate the two adjacent feeding seats 254. This achieves the spacing distribution of the yoke or coil assembly placed on the feeding seat 254, so that the spacing between the two adjacent yokes or two adjacent coil assemblies can adapt to the spacing distance between the assembly stations on the two adjacent assembly seats, thus meeting the automatic feeding requirement.

[0025] Figure 7 This is a structural diagram of a preferred embodiment of the material tray rotation assembly of the present invention. Figure 2 and Figure 7As shown, the material tray rotating assembly 21 includes a rotating frame 211, a conveyor belt 212, a conveyor driver 213, a limiting support seat 214, and a top material cylinder 215. The rotating frame 211 is arranged horizontally in one direction, and conveyor belts 212 are provided on both sides of the rotating frame 211. The conveyor driver 213 is mounted on the rotating frame 211 and is poweredly connected to the conveyor belts 212, providing power for the movement of the conveyor belts 212. At this time, two sets of spaced limiting support seats 214 are provided at both ends of the rotating frame 211. The distance between the two limiting support seats 214 in the same set is consistent with the width or length dimension of the material tray. The two limiting support seats 214 in the same set restrict the material tray group, providing conditions for the subsequent interval release of a single material tray. In addition, a top material cylinder 215 for lifting and lowering is provided at both ends of the rotating frame 211 and between the two conveyor belts 212, and the top material cylinder 215 is located between the two limiting support seats 214 in the same set. In use, several trays are stacked on one end of the rotating frame 211, with the bottom tray supported by the top material cylinder 215, allowing the bottom of the tray to leave the conveyor belt 212. When feeding is required, the top material cylinder 215 is lowered, causing the bottom tray to contact the conveyor belt 212 and move with it. At this time, the second to last tray is restricted by the limiting support seat 214 and cannot move with the bottom tray, thus achieving independent conveying of the bottom tray. After the bottom tray is conveyed away, the original second to last tray automatically falls, and the top material cylinder 215 moves upward to hold the falling tray, so that there is a tray moving on the conveyor belt 212. At this time, after stopping the tray, the coil component in the tray can be grabbed and transferred by the first coil transfer component 22. After the coil assembly in the tray is transferred, the tray continues to move with the conveyor belt 212 to the other end of the wheel frame 211. The empty tray is lifted off the conveyor belt 212 by the top material cylinder 215 at that end. After the empty tray rises to a predetermined height, the empty tray is locked by the limiting support seat 214 at that end. Then, the top material cylinder 215 at that end moves down, waiting for the next empty tray to be delivered before continuing to lift the tray. This achieves the sequential stacking of empty trays, satisfying the automatic transfer requirement of the tray.

[0026] Figure 8 This is a structural diagram of the tray limiting part according to a preferred embodiment of the present invention. Figure 2 , Figure 7 as well as Figure 8As shown, a tray limiting part 216 is also provided in the middle of the rotating frame 211. At this time, the tray limiting part 216 includes a limiting frame 2161, a telescopic limiting part 2162, and a flipping limiting part 2163. Two limiting frames 2161 are provided at intervals in the middle of the rotating frame 211 along the conveying direction of the conveyor belt 212. The telescopic limiting part 2162 and the flipping limiting part 2163 are respectively provided on the two limiting frames 2161. The distance between the telescopic limiting part 2162 and the flipping limiting part 2163 is consistent with the length or width of the tray, so that when the subsequent tray moves between the telescopic limiting part 2162 and the flipping limiting part 2163, the tray can be restricted, which makes it easier for the first coil transfer assembly 22 to grab the coil assembly from the tray. At this time, the telescopic limiting part 2162 is a telescopic cylinder arranged in the vertical direction. When the material tray moves past the telescopic limiting part 2162, the telescopic cylinder retracts to allow the material tray to pass. When it is necessary to lock the material tray, the telescopic cylinder can extend and lock one end of the material tray. In addition, the flipping limiting component includes a flipping push rod 21631, a flipping seat 21632, and a flipping block 21633. The flipping seat 21632 is mounted on the corresponding limiting frame 2161. The middle part of the flipping block 21633 is hinged to the flipping seat 21632. The other end of the flipping seat 21632 is hinged to the flipping push rod 21631. The other end of the flipping push rod 21631 is hinged to the limiting frame 2161. This allows the flipping block 21633 to flip on the flipping seat 21632 when the flipping push rod 21631 moves, thereby enabling the other end of the flipping block 21633 to extend or retract, satisfying the usage requirements of locking the other end of the material tray or allowing the material tray to pass through.

[0027] Figure 9 This is a structural diagram of a core feeding assembly according to a preferred embodiment of the present invention. Figure 3 and Figure 9As shown, the iron core feeding assembly 33 includes a mounting plate 331, an iron core slide rail 332, an iron core carriage 333, an iron core feeding driver 334, iron core clamping blocks 335, fingers 336, and an iron core pushing cylinder 337. The mounting plate 331 is arranged horizontally. The iron core slide rail 332 is installed on the bottom of the mounting plate 331 along one direction, and the iron core carriage 333 is slidably installed on the iron core slide rail 332. Several iron core clamping blocks 335 are installed at intervals on the iron core carriage 333, and the interval between the iron core clamping blocks 335 is consistent with the distance between the assembly stations on two adjacent assembly seats. When the iron core carriage 333 slides on the iron core slide rail 332, the iron core carriage 333 selectively moves above the conveyor belt to ensure that the iron core in the subsequent iron core clamping block 335 can correspond to an assembly station to realize automatic iron core feeding. In addition, the core loading driver 334 is mounted on the mounting plate 331 and is poweredly connected to the core carriage 333, meaning that the core loading driver 334 can provide power for the movement of the core carriage 333. A clearance notch is provided at one end of the mounting plate 331 near the conveyor belt. Several core pushing rods, corresponding one-to-one with the core clamping blocks 335, are arranged on the mounting plate 331 above the clearance notch. This allows the core pushing cylinder 337 to act on the corresponding core clamping block 335 when the core carriage 333 moves into the clearance notch, providing conditions for pushing the core out of the core clamping block 335. In addition, the mounting plate 331 has several iron core loading ports that correspond one-to-one with the iron core clamping blocks 335 on the side of the clearance notch. Each iron core loading port is connected to a guide tube 32, so that when the iron core slide 333 moves to the iron core loading port, the iron core in the guide tube 32 will enter the corresponding iron core clamping block 335 through the corresponding iron core loading port, thus meeting the automatic feeding requirements of the iron core. That is, when the iron core slider moves back and forth on the iron core slide rail 332, it can not only feed the iron core into the iron core clamping block 335, but also push the iron core in the iron core clamping block 335 into the assembly seat on the conveyor belt. Two feeding operations are realized through one structure, which has better structural compactness and higher utilization rate. In addition, each iron core clamping block 335 has a storage hole 3351 arranged vertically in the middle. Each iron core clamping block 335 has fingers 336 hinged on both sides, and the non-hinged ends of the two fingers 336 protrude towards the storage hole 3351, so that the fingers 336 can hang down naturally under their own weight and block the storage hole 3351 through the protruding parts, thereby realizing the storage of the iron core during the transfer process.In addition, each finger 336 has a semi-circular guide notch corresponding to the storage hole 3351 on its protruding part. When the two fingers 336 are close together, the guide notches on the two fingers 336 combine to form a circular guide hole. The diameter of the guide hole is smaller than the diameter of the large end of the iron core. At this time, the guide hole is used as a feeding nozzle to ensure that the iron core is confined in the guide hole when the fingers 336 are not moving. When the fingers 336 deflect, the guide hole can be opened to allow the iron core to fall out of the guide hole, so as to realize the automatic feeding of the iron core. Preferably, the upper ends of the guide holes formed by the two fingers 336 are both flared, making the upper end of each guide notch a slope. This allows the drive shaft of the core pushing cylinder 337 to contact the slope at the upper end of the guide notch of each finger 336 when it is inserted into the storage hole 3351 of the corresponding core clamping block 335 and continues to move downward. This pushes the finger 336 to deflect and release the core. Additionally, a tension spring can be installed between the two fingers 336 to bring them closer together, ensuring the reliability of the core transfer within the core clamping block 335 when the core pushing cylinder 337 is not activated. This prevents the core from accidentally falling out, resulting in a more rational structural design. It is worth noting that a lifting structure is also provided between the mounting plate 331 and the frame. The lifting structure includes, but is not limited to, the existing guide rail slider structure on the market, and is driven by an electric push rod or a cylinder. It can meet the usage requirements of lifting the mounting plate 331 on the frame, thus providing conditions for the subsequent assembly station where the clamp is aligned with the assembly seat on the conveyor belt after the clamp is lowered.

[0028] Figure 10 This is a structural diagram of a core feeding assembly according to a preferred embodiment of the present invention. Figure 3 and Figure 10As shown, the core loading structure 3 also includes a core feeding assembly 34. The core feeding assembly 34 enables sequential feeding of cores, preventing core accumulation, and allows for individual feeding of multiple cores. The core feeding assembly 34 includes a support platform 341, a baffle 342, a moving block 343, a guide plate 344, a sliding stop 345, a sliding wheel 346, and a push drive 347. The support platform 341 is located at the outlet of the core loading tray 31. The baffle 342 is mounted on the support platform 341, and the outlet of the core loading tray 31 passes through the baffle 342, allowing the cores fed from the outlet of the core loading tray 31 to pass through the baffle 342 before being fed. The moving block 343 is slidably mounted on the support platform 341, with one side of the moving block 343 abutting against the baffle 342, ensuring that the moving block 343 can open or close the outlet of the core loading tray 31 during subsequent movement. Furthermore, the moving block 343 has several material picking notches spaced apart on the side near the baffle 342. When the moving block 343 moves, different material picking notches selectively connect to the outlet of the iron core loading tray 31, providing conditions for subsequent individual picking of iron cores for individual feeding. In addition, each material picking notch on the moving block 343, on the side opposite to the baffle 342, has a strip-shaped sliding hole 3431. A sliding stop is slidably installed in each strip-shaped sliding hole 3431, and one end of the sliding stop extends to the corresponding material picking notch. This allows the sliding stop to extend into the material picking notch to hold the iron core in the notch or retract from the notch to release the iron core when the sliding stop moves. This provides conditions for subsequently taking the iron core from the outlet of the iron core loading tray 31 and transferring it into the corresponding guide tube 32. Additionally, a guide plate 344, arranged parallel to the support platform 341, is installed on the baffle 342. The guide plate 344 has several inclined guide grooves 3441. These inclined guide grooves cooperate with the moving block 343 to allow the sliding block to move within the strip-shaped sliding hole 3431. Each sliding block 345 is equipped with a sliding wheel 346, and one sliding wheel 346 extends into an inclined guide groove 3441. This allows the sliding block 345 to move within the strip-shaped sliding hole 3431 as the moving block 343 moves relative to the guide plate 344, through the movement of the sliding wheel 346 within the corresponding inclined guide groove 3441. This, in turn, supports or releases the iron core from the material handling gap. In addition, several connecting holes 3411 are provided on the side of the support platform 341 near the baffle 342. Each connecting hole 3411 is connected to a guide tube 32. When the moving block 343 moves, the material picking notch selectively aligns with the connecting hole 3411. That is, when the iron core in the material picking notch is released, the material picking notch is aligned with the connecting hole 3411 to ensure that the released iron core can enter the guide tube 32. When the iron core in the material picking notch is supported, the material picking notch is misaligned with the connecting hole 3411 to ensure that the moving iron core will not accidentally enter the guide tube 32, thus providing conditions for the subsequent individual picking of iron core into the guide tube 32.In addition, the push drive 347 is mounted on the support platform 341 and is poweredly connected to the moving block 343, providing power for the sliding of the moving block 343 on the support platform 341. It is worth noting that there are two sets of inclined guide grooves 3441, and the inclination directions of each set of inclined guide grooves 3441 are exactly opposite. That is, the sliding blocks 345 corresponding to the sliding wheels 346 guided by the two sets of inclined guide grooves 3441 move in opposite directions within the corresponding strip-shaped sliding holes 3431. This ensures that while the iron core in one set of material picking gaps is supported, the iron core in the other set of material picking gaps moves to the connecting hole 3411 to release the iron core. This ensures that the reciprocating motion of the moving block 343 can achieve automatic feeding of some iron cores, improving feeding efficiency.

[0029] More specifically, the lower pushing assembly 42 also includes a press 421. The press 421 is vertically upward, and a vertically upward extrusion head is mounted on its drive shaft. The top of the extrusion head has several blades, preferably arranged in a cross shape. This allows the blades on the extrusion head to contact the end face of the small end of the iron core after the lower pushing assembly 42 rises to a predetermined height. The extrusion head is then pushed upward, cutting and extruding the end face of the small end of the iron core through the blades, causing the small end of the iron core to expand outward and form a limiting structure. This limiting structure on the small end of the iron core can stably connect the coil assembly to the yoke. It is worth noting that the assembly base has a through hole connecting to the assembly station. When the assembly base moves to the lower pushing assembly 42, the extrusion head can pass through the through hole and enter the assembly station, ensuring that the extrusion head can act on the small end of the iron core in the assembly station. In addition, the upper abutment component 41 and the lower pusher component 42 are provided with support plates. A moving groove is formed on the support plate along one direction. At this time, the conveyor belt is disconnected from the upper abutment component 41 and the lower pusher component 42, meaning there are two conveyor belts before and after the upper abutment component 41 and the lower pusher component 42. The support plate is positioned at the disconnection point of the conveyor belts, allowing both ends of the moving groove to connect to the conveyor belts. The moving groove serves as a transition section at the disconnection point, enabling the assembly seat conveyed by the conveyor belt to move into the moving groove on the support plate. Furthermore, the moving groove on the support plate has clearance holes corresponding to the through holes, allowing the pressing head to pass through the clearance holes during its ascent, satisfying the riveting requirements while preventing damage to the conveyor belt. Additionally, as the conveyor belt feeds the assembly seat into the moving groove on the support plate, the assembly seat can slide within the moving groove through continuous pushing by subsequent assembly seats, ensuring that the assembly seat passes sequentially through the upper abutment component 41 and the lower pusher component 42, satisfying the riveting requirements for the small end of the iron core.

[0030] The relay magnetic circuit installation equipment provided in this embodiment includes a transmission structure, a yoke mounting structure 1, a coil mounting structure 2, an iron core mounting structure 3, and an iron core riveting structure 4. By sequentially arranging the yoke mounting structure 1, coil mounting structure 2, iron core mounting structure 3, and iron core riveting structure 4 along the conveyor belt, and by sequentially conveying the assembly base with assembly stations to the yoke mounting structure 1, coil mounting structure 2, iron core mounting structure 3, and iron core riveting structure 4 via the conveyor belt, the yoke, coil assembly, and iron core are automatically fed into the assembly stations. After feeding, the small end of the iron core is riveted by the iron core riveting structure 4, ensuring that the iron core stably restrains the coil assembly onto the yoke. This achieves automatic assembly of the relay magnetic circuit without manual intervention, resulting in lower labor costs, higher assembly efficiency, and avoidance of errors that are prone to occur during manual assembly. This ensures product quality and facilitates the large-scale application of relays.

[0031] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should recognize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A relay magnetic circuit mounting apparatus characterized by comprising: The utility model relates to a kind of coil assembly machine, including: Transmission structure, the transmission structure has transmission belt arranged in a direction, several assembly seats are provided on the transmission belt, and each assembly seat is provided with assembly station; Yoke iron structure is provided to one side of the transmission belt, the yoke iron structure includes yoke iron feeding disc, yoke iron transfer assembly, yoke iron distribution assembly and yoke iron feeding assembly, the outlet of the yoke iron feeding disc is provided with the yoke iron transfer assembly, while the yoke iron distribution assembly is installed in the extension direction of the outlet of the yoke iron feeding disc, the yoke iron transfer assembly is arranged between the outlet of the yoke iron feeding disc and the yoke iron distribution assembly, the yoke iron feeding assembly is arranged between the yoke iron distribution assembly and the transmission belt; Coil structure is provided to one side of the transmission belt, and along the conveying direction of the transmission belt, the coil structure is located behind the yoke iron structure, the coil structure includes disc wheel rotation assembly, first coil transfer assembly, coil moving assembly, second coil transfer assembly and coil distribution assembly again, the disc wheel rotation assembly is spaced apart and provided to the side of the transmission belt along the conveying direction of the transmission belt, the coil moving assembly is provided between the disc wheel rotation assembly and the transmission belt, the sliding table is provided on the coil moving assembly, a plurality of storage stations are provided on the sliding table, the first coil transfer assembly is arranged between the coil moving assembly and the disc wheel rotation assembly, the coil distribution assembly is arranged between the coil moving assembly and the transmission belt, and the second coil transfer assembly is arranged between the coil moving assembly and the transmission belt; Iron core structure is provided to one side of the transmission belt, and along the conveying direction of the transmission belt, the iron core structure is provided behind the coil structure, the iron core structure includes iron core feeding disc, guide pipe and iron core feeding assembly, the iron core feeding disc is provided to the side of the transmission belt, the guide pipe is provided at the outlet of the iron core feeding disc, the iron core feeding assembly is provided between the guide pipe and the transmission belt, and the feeding nozzle of the iron core feeding assembly is above the transmission belt; Iron core riveting structure is provided behind the iron core structure along the transmission direction of the transmission belt, the iron core riveting structure includes upper abutting assembly and lower pushing and extruding assembly, the upper abutting assembly and the lower pushing and extruding assembly are oppositely arranged in vertical direction and are both lifted and lowered, the upper abutting assembly has a pressing block, the lower pushing and extruding assembly has an extruding head, when using, the pressing block is lowered and abuts on the big end of iron core, the extruding head is lifted and rivets the small end of iron core.

2. The relay magnetic circuit mounting apparatus according to claim 1, characterized by The yoke transferring assembly, the yoke feeding assembly, the first coil transferring assembly and the second coil transferring assembly each comprise a sliding frame, a guide rail, a sliding base, a transferring drive, a transferring lifting drive and a clamping jaw, the sliding frame is horizontally arranged along a direction, the sliding frame of the yoke transferring assembly is arranged above the yoke distributing assembly, the sliding frame of the yoke feeding assembly is arranged above the conveying belt, the sliding frame of the first coil transferring assembly is arranged above the tray rotating assembly, the sliding frame of the second coil transferring assembly is arranged above the conveying belt, the guide rail is installed on the sliding frame, the sliding base is slidingly arranged on the guide rail, the transferring drive is arranged on the sliding frame and connected with the sliding base, the transferring lifting drive is installed on the sliding base along a vertical direction, and the clamping jaw is arranged on the driving part of the transferring lifting drive.

3. The relay magnetic circuit mounting apparatus according to claim 2, characterized by Two groups of the clamping jaws are arranged on the sliding base of the second coil transferring assembly in a spaced manner, and when one group of the clamping jaws moves to above the sliding table of the coil moving assembly, the other group of the clamping jaws is located above the coil distributing assembly, or when one group of the clamping jaws moves to above the coil distributing assembly, the other group of the clamping jaws is located above the conveying belt.

4. The relay magnetic circuit mounting apparatus according to claim 2, characterized by The clamping jaw of the first coil transferring assembly further comprises two clamping plates and coil positioning columns, the clamping jaw is arranged on both ends of the driving part of the transferring lifting drive of the first coil transferring assembly, the bottom of the part of the driving part of the transferring lifting drive between the two clamping jaws is provided with a plurality of coil positioning columns arranged in a spaced manner, and the clamping plates are arranged between the fingers on the same side of the two clamping jaws.

5. The relay magnetic circuit mounting apparatus according to claim 1, characterized by The yoke distributing assembly and the coil distributing assembly each comprise a distributing frame, a distributing rail, a distributing drive, a plurality of distributing bases and a plurality of connecting rods, the distributing rail is arranged on the distributing frame along a direction, a plurality of the distributing bases are slidingly arranged on the distributing rail along the length direction of the distributing rail, each of the distributing bases is provided with a distributing station, the transferred yoke or coil assembly can be placed in the distributing station, one connecting rod is arranged between two adjacent distributing bases, limit heads are arranged at both ends of the connecting rod, the limit members are located on the side away from each other of the distributing bases, the distributing drive is installed on the distributing frame, one of the two outermost distributing bases is fixedly connected with the distributing rail or the distributing frame, and the other distributing base is connected with the distributing drive.

6. The relay magnetic circuit mounting apparatus according to claim 1, characterized by The tray rotating assembly comprises a rotating frame, a conveying belt, a conveying driver, a limiting support seat and a material lifting cylinder, the rotating frame is horizontally arranged along a direction, the rotating frame is provided with the conveying belt on both sides, the conveying driver is installed on the rotating frame and is in power connection with the conveying belt, both ends of the rotating frame are provided with two groups of limiting support seats arranged at intervals, the interval between the two limiting support seats in the same group is consistent with the width or length of the tray, both ends of the rotating frame and between the two conveying belts are provided with the material lifting cylinder which moves up and down, and the material lifting cylinder is located between the two limiting support seats in the same group.

7. The relay magnetic circuit mounting apparatus according to claim 6, characterized by Further comprising a tray limiting part, the tray limiting part is arranged in the middle of the rotating frame, the tray limiting part comprises a limiting frame, a telescopic limiting part and a turnover limiting part, the middle of the rotating frame is provided with two limiting frames arranged at intervals along the conveying direction of the conveying belt, the telescopic limiting part and the turnover limiting part are arranged on the two limiting frames respectively, the interval between the telescopic limiting part and the turnover limiting part is consistent with the length or width of the tray, the telescopic limiting part is a telescopic cylinder arranged along the vertical direction, the turnover limiting part comprises a turnover push rod, a turnover seat and a turnover block, the turnover seat is installed on the corresponding limiting frame, the middle of the turnover block is hinged to the turnover seat, the other end of the turnover seat is hinged to the turnover push rod, and the other end of the turnover push rod is hinged to the limiting frame.

8. The relay magnetic circuit mounting apparatus according to claim 1, characterized by The iron core feeding assembly comprises a mounting plate, an iron core sliding rail, an iron core sliding frame, an iron core feeding driver, iron core clamping blocks, fingers and an iron core pushing cylinder, the mounting plate is horizontally arranged, the bottom of the mounting plate is provided with the iron core sliding rail in a direction, the iron core sliding frame is slidingly installed on the iron core sliding rail, a plurality of iron core clamping blocks are installed on the iron core sliding frame at intervals, the interval distance between the iron core clamping blocks is consistent with the interval between the assembly stations on two adjacent assembly seats, when the iron core sliding frame slides on the iron core sliding rail, the iron core sliding frame selectively moves above the conveying belt, the iron core feeding driver is installed on the mounting plate and is power-connected with the iron core sliding frame, an avoiding gap is formed in one end of the mounting plate close to the conveying belt, a plurality of iron core pushing cylinders corresponding to the iron core clamping blocks are arranged on the mounting plate above the avoiding gap, a plurality of iron core feeding openings corresponding to the iron core clamping blocks are formed in the mounting plate beside the avoiding gap, each iron core feeding opening is connected with a guide pipe, a storage hole arranged in a vertical direction is formed in the middle of each iron core clamping block, fingers are hingedly connected to the two sides of each iron core clamping block, and the opposite sides of the non-hinged ends of the two fingers protrude towards the storage hole, a semicircular guide gap corresponding to the storage hole is formed in the protruding part of each finger, when the two fingers are close to each other, the guide gaps on the two fingers combine to form a circular guide hole, the diameter of the guide hole is smaller than the diameter of the large end of the iron core, and the upper ends of the guide holes formed by the two fingers are both flared.

9. The relay magnetic circuit mounting apparatus according to claim 1, characterized by The iron core loading structure further comprises an iron core distributing assembly, which comprises a supporting table, a baffle, a moving block, a guide plate, a sliding block, a sliding wheel and a pushing driver.

10. The relay magnetic circuit mounting apparatus according to claim 1, characterized by The lower pushing and extruding assembly further comprises a press machine, which is arranged vertically upward. A vertical upward extruding head is installed on a driving shaft of the press machine. A plurality of blades are arranged at a top end of the extruding head.

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