Stator assembly production line and stator assembly method

Abstract

The present invention relates to a stator assembly production line and a stator assembly method. The stator assembly production line comprises: a frame; a loading structure, wherein the loading structure comprises a loading turntable rotatably arranged at the top of the frame, support assemblies annularly arranged at the top of the feeding turntable, an agent impregnation disc fixed at the top of the frame and located on one side of the loading turntable, and a loading assembly arranged at the tops of the support assemblies and the top of the agent impregnation disc; and an adhesive applying structure, wherein the adhesive applying structure comprises an adhesive applying turntable rotatably arranged at the top of the frame, adhesive applying discs annularly arranged at the top of the adhesive applying turntable, and an adhesive applying assembly arranged on an outer side of the adhesive applying turntable. The loading assembly sucks stator discs from the agent impregnation disc and places same on the adhesive applying discs, and the adhesive applying assembly applies an adhesive to the upper surfaces of the stator discs. The stator assembly production line of the present invention has stronger versatility, improves the transfer, bonding and press-mounting efficiency of the stator discs, and prevents insufficient press-mounting or excessive press-mounting, thereby increasing the pass rate of finished stators.

Description

Stator assembly production line and assembly method TECHNICAL FIELD

[0001] The present application belongs to the technical field of stator assembly, and particularly relates to a stator assembly production line and an assembly method. BACKGROUND

[0002] The stator is the stationary part of the motor. The stator is composed of a stator core, a stator winding and a base. The main function of the stator is to generate a rotating magnetic field, and the main function of the rotor is to be cut by the magnetic lines of force in the rotating magnetic field to generate (output) current. In the processing and production of the stator, a single stator sheet is usually punched out on a silicon steel sheet by stamping process, and then the stator sheets are stacked and bonded together by welding or gluing to form a stator. In the existing stator assembly process, the transfer, handling and pressing of the stator sheets still need the intervention of workers, which not only affects the assembly efficiency of the stator, but also affects the assembly accuracy of the stator sheets. TECHNICAL PROBLEM

[0003] The present application provides a stator assembly production line and an assembly method, which solves the defects that the assembly efficiency of the stator and the qualified rate of the finished product are affected due to the manual intervention in the stator assembly process in the prior art. TECHNICAL SOLUTION

[0004] To achieve the above object, the technical scheme adopted by the present application is: a stator assembling production line, comprising: a rack; a feeding structure, the feeding structure comprising a feeding turntable rotatably arranged on the top of the rack, a supporting assembly annularly arranged on the top of the feeding turntable, a dip agent disc fixed on the top of the rack and located on one side of the feeding turntable, and a feeding assembly arranged on the top of the supporting assembly and the dip agent disc; the stator sheets are stacked on the supporting assembly, the feeding assembly sucks the single stator sheet on the uppermost layer of the supporting assembly and places it in the dip agent disc; a glue applying structure, the glue applying structure comprising a glue applying turntable rotatably arranged on the top of the rack, a glue applying disc annularly arranged on the top of the glue applying turntable, and a glue applying assembly arranged on the outer side of the glue applying turntable; the feeding assembly sucks the stator sheet in the dip agent disc and places it on the glue applying disc, and the glue applying assembly applies glue to the upper surface of the stator sheet; an adjusting structure, the adjusting structure comprising an angle adjusting assembly and a turnover assembly fixed on the top of the rack, a carrying assembly arranged above the glue applying disc and the angle adjusting assembly, and a transfer assembly arranged below the turnover assembly; the carrying assembly sucks the stator sheet in the glue applying disc and places it on the angle adjusting assembly, or sucks the stator sheet on the angle adjusting assembly and places it on the turnover assembly; the adjusting angle of the angle adjusting assembly is in an arithmetic progression; the turnover assembly turns over the stator sheet so that the glue applying surface faces downward and the dip agent surface faces upward, and places it on the transfer assembly; a pressing structure, the pressing structure comprising a bearing assembly and a pressing assembly; the bearing assembly comprises a bearing rack, an inner gauge fixed on the top of the bearing rack, a tray telescopically arranged on the inner gauge, and a second inserting rod annularly arranged on the top of the bearing rack and penetrating through the tray; the carrying assembly sucks the stator sheet on the transfer assembly and places it on the tray; the inner gauge is used for limiting the inner side wall of the stator sheet; the pressing assembly comprises a pressing rack arranged above the bearing rack, a pressing frame telescopically arranged on the bottom of the pressing rack, a pressing plate fixed on the bottom of the pressing frame, an outer gauge fixed on the bottom of the pressing plate, an elastic pressing block arranged on the bottom of the pressing plate and abutting against the inner side wall of the outer gauge, and an inserting slot annularly arranged on the bottom of the pressing block; when the pressing frame descends, the pressing block abuts against the upper surface of the stator sheet, the inserting slot is used for limiting the second inserting rod, and the outer gauge is used for limiting the outer side wall of the stator sheet.

[0005] Optimally, the supporting assembly comprises an outer fixed disc fixed on the top of the feeding turntable, a first inserting rod annularly arranged on the top of the outer fixed disc, a first guide portion obliquely arranged on the top of the first inserting rod, and an inner lifting disc telescopically arranged on the first inserting rod; the stator sheet is inserted on the first inserting rod.

[0006] Optimally, the feeding assembly comprises a feeding frame, a feeding plate movably arranged at one side of the feeding frame, a first lifting plate liftably arranged at one side of the feeding plate, an air plate fixed at the bottom of the first lifting plate, a leveling plate fixed at the bottom of the air plate, a suction nozzle annularly arranged at the top of the air plate, and air holes and avoiding holes penetrating through the leveling plate, the suction nozzle penetrating through the air holes and used for sucking the single stator sheet on the top layer of the inner lifting disc.

[0007] Optimally, the feeding structure further comprises a second lifting plate liftably arranged at the bottom of the feeding frame, a partition disc fixed at the bottom of the second lifting plate, a partition air block annularly arranged at the inner side wall of the partition disc, and air grooves opened at the inner side of the partition air block, the partition air block used for partitioning the first layer of stator sheets and the second layer of stator sheets on the top of the inner lifting disc.

[0008] Optimally, the angle adjusting assembly comprises an adjusting frame fixed at the top of the rack, a receiving disc rotatably installed at the top of the adjusting frame, a first positioning block annularly arranged at the top of the receiving disc, and a first positioning portion obliquely opened at the top of the first positioning block, the carrying assembly sucking the stator sheet in the glue applying disc and placing it on the receiving disc.

[0009] Optimally, the turnover assembly comprises a turnover frame fixed at the top of the rack, a third lifting plate liftably arranged at one side of the turnover frame, a turnover plate rotatably installed at the side of the third lifting plate away from the turnover frame, an adjusting plate adjustably arranged at one side of the turnover plate, and suction mechanisms fixed at both sides of the adjusting plate, the carrying assembly sucking the stator sheet in the receiving disc and placing it on the suction mechanism, the turnover assembly turning over the stator sheet so that the glue applying surface faces downward and the immersion agent surface faces upward.

[0010] Optimally, the transfer assembly comprises a transfer frame fixed at the top of the rack, a transfer plate rotatably installed at the top of the transfer frame, transfer discs fixed at intervals at the top of the transfer plate, and placing grooves opened at the top of the transfer discs, the inner diameter of the placing grooves being larger than the inner diameter of the stator sheet, and the outer diameter of the placing grooves being smaller than the outer diameter of the stator sheet, the turnover assembly placing the turned over stator sheet on the transfer disc.

[0011] Optimally, the bearing assembly further comprises a main sliding plate slidingly connected to the bearing frame, a first inclined pin surface obliquely opened at the top of the main sliding plate, a secondary sliding plate arranged at the top of the main sliding plate, a second inclined pin surface obliquely opened at the bottom of the secondary sliding plate and matched with the first inclined pin surface, a top disc fixed at the top of the secondary sliding plate, and a top column annularly arranged at the top of the top disc and fixed with the tray.

[0012] Optimally, the press assembly further comprises a transition block fixed on the top of the press frame, a transition groove opened on the bottom of the transition block, a through hole coaxially penetrating through the transition block and communicating with the transition groove, a pressure sensor fixed on the top of the press frame and located in the transition groove, a connecting rod which can be lifted and penetrate through the through hole, and a contact block fixed on the bottom of the connecting rod and matched with the pressure sensor, the diameter of the contact block being larger than that of the through hole.

[0013] The application also provides another technical solution: a stator assembling method, comprising the following steps: S1, laminating the stator sheets on the support assembly; S2, the feeding assembly absorbs the single stator sheet on the uppermost layer of the support assembly each time, and performs the immersion activator treatment on the bottom surface of the stator sheet; S3, the gluing structure performs the top surface gluing treatment on the stator sheet in S2; S4, the angle adjusting assembly performs the angle adjustment on the stator sheet in S3, and the adjustment angle of the angle adjusting assembly is in equal difference distribution; S5, the turnover assembly performs the turnover on the stator sheet in S4, so that the gluing surface of the stator sheet faces downward and the immersion activator surface faces upward; S6, the stator sheet after the turnover in S5 is placed on the bearing assembly in sequence; and S7, the press assembly press-assembles the stator sheet on the bearing assembly in sequence, thereby forming the stator.

[0014] Due to the use of the above technical solution, the stator assembling production line of the application has the following advantages compared with the prior art: after the bottom surface of the stator sheet is treated by the immersion activator by the feeding structure, the top surface of the stator sheet is treated by the gluing structure, and then is transferred to the adjusting structure, each stator sheet placed here is adjusted in angle and turned over by the adjusting structure, thereby improving the stability of the structure of the stator formed subsequently, the stator sheet after the adjustment by the adjusting structure is transferred to the press structure, the press structure press-assembles the stator sheet placed here in sequence, so that the activator layer and the gluing layer of the adjacent two layers of stator sheets are fully contacted, thereby forming the finished stator, the whole process has high automation degree, no operator is needed in the whole operation process, the influence of human factors is excluded, the transfer, bonding and press-assembly efficiency of the stator sheet are improved, and the situation of press-assembly not in place or over-press-assembly does not occur, thereby improving the qualified rate of the finished stator. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 is a structural schematic diagram of the stator sheet of the present application; Fig. 2 is a structural schematic diagram of the present application; Fig. 3 is a partial structural schematic diagram of the loading structure of the present application; Fig. 4 is a partial structural schematic diagram of the loading structure of the present application; Fig. 5 is a structural schematic diagram of the leveling plate in the loading structure of the present application; Fig. 6 is a structural schematic diagram of the adjusting structure of the present application; Fig. 7 is a structural schematic diagram of the turnover assembly in the adjusting structure of the present application; Fig. 8 is a structural schematic diagram of the transfer assembly in the adjusting structure of the present application; Fig. 9 is a structural schematic diagram of the receiving disc in the adjusting structure of the present application; Fig. 10 is a structural schematic diagram of the bearing assembly in the pressing structure of the present application; Fig. 11 is a partial structural schematic diagram of the bearing assembly in the pressing structure of the present application; Fig. 12 is a sectional view of the pressing assembly in the pressing structure of the present application; Fig. 13 is a partial sectional view of the pressing assembly in the pressing structure of the present application; Fig. 14 is a structural schematic diagram of the bottom of the pressing assembly in the pressing structure of the present application; and Fig. 15 is a structural schematic diagram of the carrying assembly in the pressing structure of the present application. Embodiment of the present application

[0016] The present application will be further described below in connection with the embodiments shown in the accompanying drawings.

[0017] As shown in Fig. 1, it is a structural schematic diagram of the stator sheet 6 of the present application, and the stator sheets 6 are laminated and bonded together to form a stator structure. As shown in Fig. 2, it is a structural schematic diagram of the present application, which is used for loading, transferring and bonding the stator sheets 6 in Fig. 1 to form a stator structure. The assembly production line comprises a rack 1, a loading structure 2, a glue coating structure 3, an adjusting structure 4 and a pressing structure 5. The rack 1 is welded from aluminum profiles, and the loading structure 2, the glue coating structure 3, the adjusting structure 4 and the pressing structure 5 are all fixed on the rack 1 and arranged in sequence along the flow sequence of the stator sheets 6. The production steps are as follows: an operator inserts the stator sheets 6 into the loading structure 2, the loading structure 2 clamps the uppermost stator sheet 6 and performs immersion activator treatment on the bottom surface of the stator sheet 6, and then transfers the stator sheet 6 to the glue coating structure 3; the glue coating structure 3 performs top surface glue coating treatment on the stator sheet 6 after the bottom surface is immersed in the activator, and then transfers the stator sheet 6 to the adjusting structure 4; the adjusting structure 4 performs angle adjustment and turnover treatment on each stator sheet 6 placed thereon. The angle adjustment treatment is to make each layer of stator sheets 6 be arranged at an equal angle offset during the bonding process to form a stator, so that the insertion positions of adjacent two layers of stator sheets 6 are offset from each other to be engaged together, thereby avoiding the finished stator to be disassembled at the insertion position and improving the stability of the subsequent stator structure (mainly for the spliced stator sheet). The turnover treatment is to vertically turn the stator sheet 6 by 180°, so that the glue coating surface of the stator sheet 6 faces downward and the immersion activator surface faces upward, which facilitates the subsequent pressing. After the adjusting structure 4 adjusts the stator sheet 6, the stator sheet 6 is transferred to the pressing structure 5, and the pressing structure 5 sequentially presses the stator sheets 6 placed thereon, so that the activator layers and the glue coating layers of adjacent two layers of stator sheets 6 are fully contacted to form a finished stator, which is then transferred to the subsequent process.

[0018] The stator assembly production line shown in FIG. 2 can realize multi-specification compatibility, and the stator is formed by gluing outside the mold, which is lower in cost than in-mold forming. At the same time, the device is more versatile and can realize the forming and bonding of whole stator sheets, and also meet the forming and bonding of scattered stator sheets. As shown in FIG. 1, the structure of the whole stator sheet is annular, and the inner side of the stator sheet 6 is provided with a wire slot. The stator sheets 6 are stacked and bonded to form a stator. The structure of the scattered stator sheet is not annular, but fan-shaped. The fan-shaped scattered stator sheets are spliced to form an annular stator sheet 6, and then the annular stator sheet 6 formed by splicing is bonded to form a stator. In this way, the utilization rate of silicon steel sheets is higher and the cost is lower in the process of forming scattered stator sheets in the early stage of stamping. The processing process of splicing fan-shaped scattered stator sheets to form an annular stator sheet is more demanding, because the stator sheet is not a whole at this time, and the height deviation of adjacent two fan-shaped scattered stator sheets is easy to occur during transfer and bonding, which will directly affect the qualified rate of the finished stator. The stator assembly production line shown in FIG. 2 can be adapted to the transfer and bonding of fan-shaped scattered stator sheets, thereby forming a stator, and is more versatile. As shown in FIGS. 3 and 4, the structure of the feeding structure 2 is shown. The operator inserts the stator sheet 6 into the feeding structure 2, and the uppermost stator sheet 6 is clamped by the feeding structure 2 and treated with a bottom surface of the stator sheet 6, and then transferred to the glue coating structure 3. The feeding structure 2 includes a feeding turntable 21, a supporting assembly, a feeding assembly, and an immersion activator assembly, etc. The feeding turntable 21 is installed on the rack 1 by a servo motor, and the feeding turntable 21 is driven to rotate by the servo motor, thereby facilitating the operator to insert the stator sheet 6 into the supporting assembly (the stator sheet here can be an annular whole stator sheet shown in FIG. 1, or a stator sheet spliced by fan-shaped scattered stator sheets).

[0019] The support assembly is arranged on the top of the feeding turntable 21 and used for supporting the stator sheet 6. The feeding assembly is used for sucking each layer of the stator sheet 6 on the support assembly and transferring to the active agent immersion assembly to complete the active agent immersion treatment on the bottom surface of the stator sheet 6, facilitating the subsequent bonding. The support assembly comprises an outer fixing disc 22, an inner lifting disc 23, a first inserting rod 24 and a first guide part 25. The outer fixing disc 22 is fixed on the top of the feeding turntable 21. The first inserting rod 24 is arranged on the top of the outer fixing disc 22. The cross-sectional size of the first inserting rod 24 is matched with the wire slot size of the inner side wall of the stator sheet 6. The first guide part 25 is arranged on the top of the first inserting rod 24 in an inclined manner. The wire slot in the stator sheet 6 is guided through the first guide part 25, facilitating the insertion of the stator sheet 6. If the stator sheet is in the shape of a fan, the inner side wall of the stator sheet is also provided with a wire slot. The stator sheet is inserted on the first inserting rod through the cooperation of the wire slot, the first guide part 25 and the first inserting rod 24. A plurality of stator sheet fans in the same plane are inserted on the first inserting rod 24 to form a stator sheet 6. The inner lifting disc 23 is arranged in the outer fixing disc 22. The inner lifting disc 23 is provided with a through slot matched with the first inserting rod 24. On the one hand, the position of the first inserting rod 24 is avoided. On the other hand, when the inner lifting disc 23 is lifted to lift the stator sheet 6, the inner lifting disc 23 is limited by the first inserting rod 24, improving the stability of the lifting movement of the inner lifting disc 23 and the accuracy of the lifting position, thereby improving the accuracy of the inner lifting disc 23 in sucking the uppermost stator sheet 6. The stator sheet 6 is inserted on the first inserting rod 24 and abuts against the upper surface of the inner lifting disc 23. The inner lifting disc 23 is used for dragging a plurality of layers of stator sheets 6. The first inserting rod 24 has two functions. One is to guide and limit the inserted stator sheet 6. The other is to limit the lifting movement of the inner lifting disc 23 and the stator sheet 6, avoiding the deviation of the inner lifting disc 23 and the stator sheet 6 during the lifting. The cylinder body of the lifting cylinder is fixed on the rack 1. The piston rod of the lifting cylinder is connected with a lifting block. The lifting block is lifted by the lifting cylinder, and then the inner lifting disc 23 is lifted by the lifting block, and the stator sheet 6 is lifted. The lifting cylinder and the lifting block are not shown in the figure. The feeding assembly sucks one stator sheet 6 on the uppermost layer of the inner lifting disc 23. The lifting cylinder drives the inner lifting disc 23 to lift the height of one stator sheet 6. When the stator sheet 6 is inserted on the first inserting rod 24, the shape of the stator sheet 6 can be flexibly changed according to the requirements of the customer. For example, six outer fixing discs 22 are arranged on the feeding turntable 21. A type stator sheet 6 can be inserted on each outer fixing disc 22. A type stator sheet 6 can be inserted on one outer fixing disc 22, and B type stator sheet 6 can be inserted on another outer fixing disc 22, realizing the diversity of stator assembly.The upper feeding assembly is used for sucking a stator sheet 6 on the uppermost layer of the inner lifting disc 23 and transferring to the active agent immersion assembly. The upper feeding assembly comprises an upper feeding frame 26, an upper feeding plate 27, a first lifting plate 28, a support column 29, an air plate 210, a suction nozzle 211, a leveling plate 212, an air hole 213 and an avoiding hole 218. The upper feeding frame 26 is fixed on the rack 1 by screw fastening and located on one side of the upper feeding turntable 21. A linear slide is fixed on one side of the upper feeding frame 26. The upper feeding plate 27 is connected with the linear slide. The upper feeding plate 27 is moved by the linear slide, thereby completing the transfer work of the stator sheet 6. The lifting cylinder is fixed on the side of the upper feeding plate 27 away from the upper feeding frame 26. The first lifting plate 28 is connected with the lifting cylinder. The first lifting plate 28 is lifted and lowered by the lifting cylinder.

[0020] As shown in FIG. 4, the support column 29 is fixed on the bottom of the first lifting plate 28, providing space for the subsequent installation of the suction nozzle 211. The air plate 210 is fixed on the bottom of the support column 29. A plurality of suction nozzles 211 are arranged on the air plate 210, which are used for sucking a stator sheet 6 on the uppermost layer of the inner lifting disc 23. The leveling plate 212 is fixed on the bottom of the air plate 210. As shown in FIG. 5, the air holes 213 are arranged on the leveling plate 212 and penetrate the leveling plate 212. The suction nozzles 211 on the air plate 210 are arranged in the air holes 213. The avoiding hole 218 penetrates the leveling plate 212 and avoids the first inserting rod 24 below when sucking the stator sheet 6, thereby avoiding interference with the first inserting rod 24. By fixing the leveling plate 212 on the bottom of the air plate 210, when sucking a stator sheet 6 on the uppermost layer of the inner lifting disc 23, the leveling plate 212 is lowered and pressed on the stator sheet 6 on the uppermost layer of the inner lifting disc 23, and then the stator sheet 6 is sucked by the suction nozzle 211 on the air plate 210. The leveling plate 212 can ensure the levelness of the stator sheet 6. If only the suction nozzle 211 is used for sucking, due to the limited sucking position during sucking and transferring, when facing the fan-shaped scattered stator, a height difference is easily generated between the adjacent two scattered stators, which will directly affect the subsequent assembly of the stator sheet 6 (therefore, the leveling plate 212 is arranged, which can meet the transfer of the ring-shaped whole stator sheet shown in FIG. 1 and also meet the transfer of the fan-shaped scattered stator).

[0021] As shown in FIG. 4, the lifting slide is fixed on the upper feeding frame 26 near the side of the upper feeding turntable 21, the second lifting plate 214 is connected with the lifting slide, the separation disc 215 is fixed on the sliding part of the lifting slide, and the separation disc 215 is driven to make lifting movement by the lifting slide. The separation air block 216 is annularly arranged on the inner side wall of the separation disc 215, the nozzle is connected with the separation air block 216 and is connected with the air pump, and the air groove 217 is horizontally arranged on the inner side of the separation air block 216 and is connected with the nozzle. When the suction nozzle 211 sucks the stator sheet 6 on the uppermost layer of the inner lifting disc 23, the stator sheet 6 on the second layer may be taken up due to the contact between the first layer stator sheet 6 and the second layer stator sheet 6, so the air is blown inwards by the annular separation air block 216 to separate the stator sheet 6 on the uppermost layer and the stator sheet 6 on the second layer. As shown in FIG. 4, the immersion agent frame 219 is fixed on the rack 1 by screw fastening, the immersion agent disc 220 is fixed on the top of the immersion agent frame 219, and the immersion agent groove is annularly arranged on the top of the immersion agent disc 220. The immersion agent groove is filled with activator, and the immersion agent sponge 221 is placed in the immersion agent groove to absorb the activator in the immersion agent groove. When the suction nozzle 211 sucks the stator sheet 6 on the uppermost layer of the inner lifting disc 23 and places it on the immersion agent sponge 221, the lower surface of the stator sheet 6 will absorb the activator, which is convenient for subsequent gluing. The height of the immersion agent sponge 221 is equal to the depth of the immersion agent groove, so as to ensure that the lower surface of the stator sheet 6 can absorb enough activator. By arranging the immersion agent sponge 221, the activator can be evenly coated on the bottom of the stator sheet 6, and at the same time, the activator can be prevented from flowing to the upper surface of the stator sheet 6, which can cause waste of the activator or pollution of the upper surface of the stator.

[0022] As shown in Figure 2, the gluing structure 3 is fixed on the rack 1 and located at one side of the feeding structure 2, the feeding structure 2 sucks the stator sheet 6 after the bottom surface immersion and transfers to the gluing structure 3, the glue is applied on the upper surface of the stator sheet 6 by the gluing structure 3, finally the activator of the adjacent two stator sheets 6 contacts with the glue when the stator sheets 6 are laminated and assembled, the firmness of the stator sheet 6 is improved. The gluing structure 3 comprises a gluing turntable 31, a gluing disc 32 and a gluing assembly, the gluing turntable 31 is installed on the rack 1 by the servo motor, the gluing turntable 31 is driven to rotate by the servo motor, and then cooperates with the action of the feeding structure 2. The gluing disc 32 is annularly arranged on the top of the gluing turntable 31, and is used for receiving the stator sheet 6 after the bottom surface immersion is sucked by the feeding structure 2, the gluing disc 32 has the same structure as the receiving disc 43 in the adjusting structure 4, the stator sheet 6 placed thereon is positioned by the first positioning block 44 and the first positioning part 45 annularly arranged on the top, and the position deviation of the stator sheet 6 is avoided by the glue dispensing. The gluing assembly is fixed on the top of the rack 1 and located at the outer side of the gluing turntable 31, and is used for top gluing of the stator sheet 6 after the bottom surface immersion, the gluing assembly comprises an X-axis linear module 33, a Y-axis linear module 34 and a glue dispensing head 35. The Y-axis linear module 34 is connected with the X-axis linear module 33, the glue dispensing head 35 is on the Y-axis linear module 34, the glue dispensing head 35 is driven to move on the gluing disc 32 by the X-axis linear module 33 and the Y-axis linear module 34, and then the glue is dispensed on the upper surface of the stator sheet 6 by the glue dispensing head 35.

[0023] The adjusting structure 4 is fixed on the top of the frame 1 and located at one side of the gluing structure 3, as shown in FIG. 6, and comprises a carrying assembly 41, an angle adjusting assembly, a turnover assembly and a transfer assembly, wherein the carrying assembly 41 is used to carry the stator sheet 6 after the top surface is glued to the angle adjusting assembly; the angle adjusting assembly adjusts the angle of the stator sheet 6, and the purpose of the angle adjustment is to make each layer of the stator sheet 6 be arranged at an equal angle and be staggered, so that the insertion positions of the adjacent two layers of the stator sheet 6 are staggered and engaged together, thereby avoiding the finished stator to be scattered at the insertion position and improving the stability of the structure after the subsequent stator is assembled. The angle adjusting assembly is mainly arranged for the fan-shaped sheet stator, and therefore the stator sheet is not a whole annular shape but is spliced into an annular shape by the fan-shaped sheet stator. If the angle adjustment is not performed, the splicing lines of the stator after being glued are completely overlapped, and the stator is scattered at the insertion position during use. The carrying assembly 41 transfers the stator sheet 6 after the angle adjustment to the turnover assembly, and the stator sheet 6 is turned over by 180° in the vertical direction by the turnover assembly, so that the gluing surface of the stator sheet 6 faces downward and the activator surface faces upward, thereby facilitating the subsequent press fitting, and the transfer assembly transfers the stator sheet 6 after being turned over. The carrying assembly 41 has the same structure as the feeding assembly in the feeding structure 2, and the leveling plate 212 is fixed on the bottom of the air plate 210. When the stator sheet 6 in the inner gluing disc 32 is sucked, the leveling plate 212 is lowered and pressed on the stator sheet 6 of the gluing disc 32, and then the suction nozzle 211 on the air plate 210 sucks the stator sheet 6. The leveling plate 212 can ensure the levelness of the stator sheet 6, and the avoiding hole 218 can avoid the glue position on the surface of the stator sheet 6 and avoid wiping off the glue. If only the suction nozzle 211 is used for sucking, the height difference between the stator sheets 6 is prone to occur during sucking and transferring due to the limited suction position, which will directly affect the assembly of the subsequent stator sheet 6. The angle adjusting assembly adjusts the angle of the stator sheet 6, and the purpose of the angle adjustment is to make each layer of the stator sheet 6 be arranged at an equal angle and be staggered, so that the insertion positions of the adjacent two layers of the stator sheet 6 are staggered and engaged together, thereby avoiding the finished stator to be scattered at the insertion position and improving the stability of the structure after the subsequent stator is assembled. The angle adjusting assembly comprises an adjusting frame 42, a receiving disc 43, a first positioning block 44 and a first guide portion 25. The adjusting frame 42 is fixed on the machine table and located at one side of the carrying assembly 41. The receiving disc 43 is rotatably connected to the top of the adjusting frame 42 by a servo motor, and the carrying assembly 41 carries the stator sheet 6 after the top surface is glued to the receiving disc 43.

[0024] As shown in Figure 9, it is a schematic view of the structure of the receiving disc 43. The first positioning block 44 is annularly arranged on the top of the receiving disc 43. The handling assembly 41 carries the stator sheet 6 with the top surface coated with glue to the receiving disc 43. At the same time, the wire slot on the inner side of the stator sheet 6 is inserted into the first positioning block 44. The stator sheet 6 is positioned by the first positioning block 44. When the receiving disc 43 rotates, the inertia of the receiving disc 43 can avoid the excessive rotation of the stator sheet 6, which can cause the misalignment of the wire slot on the stator sheet 6. The first positioning part 45 is obliquely arranged on the top of the first positioning block 44. When the stator sheet 6 is inserted, the first positioning part 45 guides the stator sheet 6, which facilitates the insertion of the stator sheet 6. By arranging the rotating receiving disc 43, each stator sheet 6 placed on the receiving disc 43 is rotated by an angle, which ensures that the stator sheets 6 are engaged with each other after being bonded, improves the stability of the structure of the stator sheets 6 after being bonded, and avoids the stator sheets 6 from being separated when being stressed. The rotation angle is x (x is the included angle between two adjacent wire slots of the stator sheet 6, so that the wire slots of each layer of stator sheets 6 are aligned after being rotated by the angle). The first layer of stator sheets 6 does not need to be rotated by the angle, the second layer of stator sheets 6 is rotated by the angle x, the third layer of stator sheets 6 is rotated by the angle 2x, and so on. The rotation angle of each layer of stator sheets 6 is (n-1)x, wherein x is the included angle between two adjacent wire slots of the stator sheet 6, n is the corresponding layer number of the stator sheet 6, and n is a positive integer. Each stator sheet 6 placed on the receiving disc 43 is rotated by an angle, which ensures that the stator sheets 6 are engaged with each other after being bonded, improves the stability of the structure of the stator sheets 6 after being bonded, and avoids the stator sheets 6 from being separated when being stressed.

[0025] The turnover assembly is fixed on the machine table and located at one side of the angle adjusting assembly. The handling assembly 41 sucks the stator core 6 after the angle adjustment, and then places it at the turnover assembly. The turnover assembly turns the stator core 6 by 180° in the vertical direction, so that the glue coating surface of the stator core 6 faces downward, and the activation agent surface faces upward, facilitating subsequent press fitting and bonding. As shown in FIG. 7, the turnover assembly includes a turnover frame 46, a third lifting plate 47, a turnover cylinder 48, a turnover plate 49, a first clamping plate 410, a clamping groove 411, an adjusting plate 412, and an adjusting groove 413. The turnover frame 46 is fixed on the machine table by screw fastening. The lifting slide is vertically fixed on one side of the turnover frame 46. The third lifting plate 47 is connected to the sliding part of the lifting slide, and is driven by the lifting slide to perform lifting movement. The turnover cylinder 48 is fixed on the side of the third lifting plate 47 away from the lifting slide. The turnover plate 49 is fixed on the rotating part of the turnover cylinder 48. Through the cooperation of the lifting slide and the turnover cylinder 48, the turnover of the stator core 6 after glue coating is completed. As shown in FIG. 7, the first clamping plate 410 has two blocks, which are fixed at intervals on the side of the turnover plate 49 away from the turnover cylinder 48, and a clamping groove 411 is formed between the two first clamping plates 410 for installing the adjusting plate 412. The thickness of the adjusting plate 412 is equal to the height of the clamping groove 411, so that after the adjusting plate 412 is inserted into the clamping groove 411 between the two first clamping plates 410, the adjusting plate 412 will not shake in the vertical direction under the limiting action of the upper and lower first clamping plates 410. The adjusting groove 413 is a round rectangular shape and penetrates through the first clamping plate 410. The adjusting plate 412 is provided with a fixing hole. In actual fixing, a fastening nut is used to complete the fixing of the adjusting plate 412. By setting the adjusting groove 413, the position of the adjusting plate 412 can be adjusted appropriately, so that the adjusting plate 412 is fine-tuned, and the position accuracy of the stator core 6 suction is improved. The top and bottom of the adjusting plate 412 are fixed with suction mechanisms for receiving the stator core 6 after the angle adjustment transferred by the handling assembly 41, and driving the stator core 6 to turn by 180° in the vertical direction, so that the glue coating surface of the stator core 6 faces downward, facilitating subsequent press fitting and bonding (the suction mechanism is the same as the suction mechanism of the feeding assembly, that is, the suction mechanism is composed of the air plate 210, the suction nozzle 211, the leveling plate 212, the air hole 213, and the avoidance hole 218).

[0026] The transfer assembly is fixed on the machine table and below the turnover assembly, and the stator sheet 6 with the glue-coated surface downward is transferred to the outside, as shown in FIG. 8. The transfer assembly includes a transfer frame 414, a transfer plate 415, a transfer disc 416, a placing groove 417, a second positioning block 418 and a second positioning portion 419. The transfer frame 414 is fixed on the machine table by screw fastening, and the transfer plate 415 is fixed on the top of the transfer frame 414 by a rotary motor. The rotary motor drives the transfer plate 415 to rotate, and then the stator sheet 6 with the glue-coated surface downward is transferred to the outside. The transfer disc 416 has two parts and is fixed on the top of the transfer plate 415. Under the cooperation of the transfer plate 415, the transfer efficiency is improved. The placing groove 417 is annular and is arranged on the top of the transfer disc 416. The turnover assembly places the turned-over stator sheet 6 on the transfer disc 416. The inner diameter of the placing groove 417 is larger than the inner diameter of the stator sheet 6, and the outer diameter of the placing groove 417 is smaller than the outer diameter of the stator sheet 6. Under the premise of meeting the stator sheet 6, contact with the lower surface of the stator sheet 6 is avoided as much as possible. Therefore, the stator sheet 6 is turned over by the turnover assembly, the glue-coated surface is downward, and the middle part is in a suspended state, so that the glue on the lower surface of the stator sheet 6 is not wiped off due to contact. The second positioning block 418 is annularly arranged on the top of the placing groove 417. The turned-over stator sheet 6 is placed on the transfer disc, and the wire slot on the inner side of the stator sheet 6 is inserted into the second positioning block 418. The second positioning block 418 positions the inserted stator sheet 6, so that the position of the stator sheet 6 is not deviated during transfer. The second positioning portion 419 is obliquely arranged on the top of the second positioning block 418. When the stator sheet 6 is inserted, the stator sheet 6 is guided, so that the stator sheet 6 is conveniently inserted.

[0027] The transfer assembly transfers the stator sheet 6 to the outside, and the handling assembly 41 transfers it to the press structure 5. The press structure 5 sequentially presses the stator sheet 6 placed thereon, so that the active agent layer and the glue coating layer of the two adjacent layers of the stator sheet 6 are in full contact, thereby forming a finished stator. The press structure 5 includes a bearing assembly 51, a press assembly 52 and a blanking assembly 53. The bearing assembly 51 is used to receive the stator sheet 6 transferred by the handling assembly 41. The press assembly 52 sequentially presses the stator sheet 6 placed on the bearing assembly 51. When the thickness of the stator sheet 6 reaches the design requirement, the blanking assembly 53 clamps the finished stator and transfers it to the subsequent conveying belt for conveying to the subsequent assembly station. As shown in FIGS. 10 and 11, the bearing assembly 51 is a structural diagram. The bearing assembly 51 is used to receive the stator sheet 6 transferred by the handling assembly 41. The bearing assembly 51 includes a bearing frame 510, a first lifting assembly, a second lifting assembly, a top disc 5113, a fixed disc 5114, a top column 5115, a tray 5116, a boss 5117, a second insertion rod 5118, a second guide portion 5119, an inner gauge 5120 and a first guide surface 5121. The bearing frame 510 is welded from aluminum profiles. The bearing frame 510 is fixed on the assembly table by screw fastening and mainly plays a supporting role.

[0028] The fixed disc 5114 is fixed on the top of the bearing frame 510 by screw fastening, and the inner gauge 5120 is fixed on the top of the fixed disc 5114, which is used for preliminarily positioning each stator sheet 6 clamped thereto, avoiding the deviation of the placement position of the stator sheet 6, affecting the subsequent pressing of the stator sheet 6, and also avoiding the damage of the machine caused by the deviation of the stator sheet 6 (the outer diameter of the inner gauge 5120 is equal to the inner diameter of the stator sheet 6, so the inner gauge 5120 is used for positioning the inner side wall of the stator sheet 6). The first guide surface 5121 is obliquely arranged on the top of the inner gauge 5120, which guides the inner side wall of the stator sheet 6 when the stator sheet 6 is placed, so as to make the stator sheet 6 more easily placed on the inner gauge 5120. The second insertion rod 5118 is fixed on the top of the fixed disc 5114 and annularly arranged on the outer side of the inner gauge 5120, and the second insertion rod 5118 is matched with the wire slot shape of the stator sheet 6. When the stator sheet 6 is inserted and pressed, the inner side wall of the stator sheet 6 is inserted on the inner gauge 5120, and the wire slot of the stator sheet 6 is inserted on the second insertion rod 5118. The second guide part 5119 is obliquely arranged on the top of the second insertion rod 5118, which is used for guiding the wire slot of the stator sheet 6, so as to make the stator sheet 6 more easily inserted on the insertion rod. The tray 5116 is sleeved on the inner gauge 5120, and the top of the tray 5116 is integrally connected with the boss 5117. The tray 5116 and the boss 5117 are annularly provided with grooves matched with the second insertion rod 5118, so as to avoid the position of the second insertion rod 5118. The tray 5116 is not fixedly connected with the inner gauge 5120 inside, and can move up and down along the inner gauge 5120 under the driving of the first and second lifting assemblies at the bottom. Each stator sheet 6 placed on the boss 5117 is lowered by the first lifting assembly by a distance of the thickness of the stator sheet 6, so as to ensure that the pressing distance of the pressing assembly 52 is the same each time, thereby ensuring the consistency of the pressing and bonding effect of each layer of stator sheet 6, and avoiding the situation of excessive pressing or insufficient pressing.

[0029] The first lifting assembly comprises a guide plate 511, a first wear plate 512, a second wear plate 513, a main sliding plate 514, a first inclined pin surface 515, a third wear plate 516, a secondary sliding plate 517, a second inclined pin surface 518, and a fourth wear plate 519. One stator sheet 6 is placed on the boss 5117 for each time the carrying assembly 41 is used. The first lifting assembly drives the tray 5116 to lower by a distance of the thickness of one stator sheet 6, ensuring that the distance of the press-fitting structure 5 is lowered each time is the same, thereby ensuring the consistency of the press-fitting and bonding effect of each layer of stator sheets 6, and avoiding the situation of excessive press-fitting or press-fitting not in place. The guide plate 511 has two blocks, which are fixed on the bearing frame 510 at intervals, and the two guide plates 511 arranged at intervals form a guide groove between them, which linearly guides the sliding of the main sliding plate 514, avoids the deviation of the main sliding plate 514 when sliding, and thus affects the lifting movement of the secondary sliding plate 517. The first wear plate 512 is fixed on the bearing frame 510 and located in the guide groove formed by the two guide plates 511. The second wear plate 513 is fixed on the bottom of the main sliding plate 514 and rests on the first wear plate 512. When the main sliding plate 514 is moved by the push cylinder, the main sliding plate 514 will drive the second wear plate 513 at the bottom to move synchronously. The second wear plate 513 is arranged in the guide groove formed by the two guide plates 511, and the width of the second wear plate 513 is equal to the distance between the two guide plates 511. The second wear plate 513 is guided by the guide plate 511, and thus the sliding of the main sliding plate 514 is linearly guided, avoiding the deviation of the main sliding plate 514 when sliding, and thus affecting the lifting movement of the secondary sliding plate 517. By setting the first wear plate 512 and the second wear plate 513 that cooperate with each other, the wear of the main sliding plate 514 caused by frequent friction can be avoided, and the precision of the lifting distance of the secondary sliding plate 517 can be avoided. The main sliding plate 514 is in the shape of a right triangle, the second wear plate 513 is fixed on one of the right-angle sides of the main sliding plate 514, and the inclined surface of the main sliding plate 514 is the first inclined pin surface 515.

[0030] The auxiliary sliding plate 517 is fixed at the bottom of the top plate 5113, and the auxiliary sliding plate 517 is in the shape of a right triangle, one of the right angle edges of the auxiliary sliding plate 517 is fixed at the bottom of the top plate 5113, and the inclined surface of the auxiliary sliding plate 517 is a second inclined pin surface 518, and the second inclined pin surface 518 cooperates with the first inclined pin surface 515, so that when the push cylinder pushes the main sliding plate 514 to move, the main sliding plate 514 pushes the auxiliary sliding plate 517 to move up and down, and in turn drives the top plate 5113 and the tray 5116 above to move up and down. In order to avoid wear and tear at the contact between the main sliding plate 514 and the auxiliary sliding plate 517, a third wear-resistant plate 516 is fixed on the first inclined pin surface 515 of the main sliding plate 514, and a fourth wear-resistant plate 519 is fixed on the second inclined pin surface 518 of the auxiliary sliding plate 517. By setting the main sliding plate 514 and the auxiliary sliding plate 517 cooperating with each other, the linear motion of the push cylinder is converted into lifting motion, so as to avoid the pressing action of the pressing assembly 52. If the jacking cylinder is directly connected with the top plate 5113 to drive the top plate 5113 to move up and down, when the pressing assembly 52 presses the stator sheet 6 downward, the vertical downward pressure will directly act on the jacking cylinder, and frequent pressure will damage the jacking cylinder, resulting in a decrease in precision, and at the same time, the distance of downward pressing cannot be kept consistent, which will also affect the qualified rate of the stator product. By setting the main sliding plate 514 and the auxiliary sliding plate 517 cooperating with each other, the linear motion of the push cylinder is converted into lifting motion, so as to avoid the pressing action of the pressing assembly 52. The vertical pressure of the pressing assembly 52 acts on the main sliding plate 514 and the auxiliary sliding plate 517, and has less effect on the push cylinder on one side. Moreover, the main sliding plate 514 contacts with the bearing frame 510, and the bottom of the stator sheet 6 is rigidly supported during pressing, rather than being elastically supported by the jacking cylinder. The rigid support has a better pressing effect, ensures that the distance of downward pressing of the pressing assembly 52 is the same each time, and in turn ensures the consistency of the pressing and bonding effect of the stator sheets 6 of each layer, avoiding the situation of excessive pressing or insufficient pressing.

[0031] The second jacking mechanism includes a jacking cylinder 5110, a jacking plate 5111 and a connecting plate 5112. The jacking plate 5111 is slidably connected to the inner side of the bearing frame 510 through a slide rail and a sliding block, and abuts against the lower surface of a top disc 5113 (the jacking plate 5111 only abuts against the top disc 5113, rather than being fixedly connected to the top disc 5113). The jacking cylinder 5110 is fixed to the outer side of the bearing frame 510. One side of the connecting plate 5112 is fixed to the bottom of the jacking plate 5111, and the other side of the connecting plate 5112 is connected to the piston rod of the jacking cylinder 5110. The jacking cylinder 5110 drives the connecting plate 5112 and the jacking plate 5111 to move up and down, thereby driving the top disc 5113 to move up and down. When the press-fitting thickness of the stator sheet 6 reaches the design requirement, the second jacking assembly assists the first jacking assembly to jointly jack up the stator, and the blanking assembly 53 clamps the press-fitted finished stator to transfer it to the subsequent conveying belt and convey it to the subsequent assembly station (because the stator usually has several hundred stator sheets 6 stacked and bonded together, and the weight is relatively large, and at this time the pushing cylinder is horizontally arranged, if only the pushing cylinder is used to jack up the stator, it is relatively difficult; moreover, in order to ensure the precision of the pushing cylinder, the ejection speed should not be too high, therefore, the second jacking assembly assists the first jacking assembly to jointly jack up the stator). After the stator is ejected, the second jacking assembly is reset to the original position, and at this time the top disc 5113 is still controlled by the first jacking assembly, so as to avoid the influence of the downward movement of the press-fitting assembly 52 on the second jacking assembly. The press-fitting assembly 52 is arranged above the bearing assembly 51, and is used for press-fitting the stator sheets 6 placed on the bearing assembly 51 in sequence, as shown in FIGS. 12-14. The press-fitting assembly 52 includes a press-fitting frame 520, a press frame 521, a transition block 522, a transition groove 523, a through hole 524, a connecting rod 525, a contact block 526, a pressure sensor 527, a press plate 528, an outer gauge 529, a recess 5210, a second guide surface 5211, a press block 5212, a spring groove 5213, a spring 5214, a clamping groove 5215, a through groove 5216, a clamping plate 5217, a fixing column 5218, a insertion groove 5219, a first avoiding groove 5220 and a second avoiding groove 5221. The press-fitting frame 520 is fixed on the assembly machine table by screw fastening and is located above the bearing assembly 51. The press frame 521 is slidably connected to one side of the press-fitting frame 520 through a slide rail and a sliding block. A downward cylinder (the downward cylinder is a commercially available single-acting cylinder) is fixed to the top of the press-fitting frame 520. The press frame 521 is driven by the downward cylinder to descend, thereby press-fitting the stator sheets 6 placed on the bearing assembly 51 in sequence. As shown in FIG. 12, the transition block 522 is fixed to the top of the press frame 521, and the transition groove 523 is formed in the bottom of the transition block 522, thereby avoiding the pressure sensor 527 on the top of the press frame 521. The through hole 524 penetrates through the transition block 522 and communicates with the transition groove 523, and the through hole 524 is coaxially arranged with the transition block 522.The connecting rod 525 is connected with the piston rod of the pressing cylinder and passes through the through hole 524. The contact block 526 is fixed at the bottom of the connecting rod 525 and is placed in the transition groove 523. The contact block 526 cooperates with the pressure sensor 527 below, so as to ensure that the pressure of each pressing is the same, thereby ensuring the consistency of the pressing and bonding effect of each layer of the stator sheet 6, and avoiding the situation of excessive pressing or insufficient pressing. The diameter of the contact block 526 is greater than the diameter of the through hole 524, so that the contact block 526 is clamped at the bottom of the through hole 524, thereby avoiding the pressing frame 521 from falling. At the same time, the cooperation of the contact block 526 and the pressure sensor 527 can also ensure that the pressure of each pressing is the same, thereby avoiding the situation of excessive pressing or insufficient pressing.

[0032] As shown in FIGS. 12-14, the pressing plate 528 is fixed at the bottom of the pressing frame 521, and the outer rule 529 is fixed at the bottom of the pressing plate 528, and the recess 5210 is arranged coaxially on the inner side of the outer rule 529. The inner diameter of the outer rule 529 is equal to the outer diameter of the stator sheet 6, and the stator sheet 6 is repositioned during pressing, avoiding deviation of the placement position of the stator sheet 6, which affects the subsequent pressing of the stator sheet 6, and also avoids the stator sheet 6 being placed askew to cause the machine to be pressed. The inner diameter of the outer rule 529 is equal to the outer diameter of the stator sheet 6, so the outer rule 529 functions to position the outer side wall of the stator sheet 6. The second guide surface 5211 is arranged obliquely on the inner side of the bottom of the outer rule 529, and guides the outer side wall of the stator sheet 6 during downward pressing of the stator sheet 6, ensuring that the stator sheet 6 is more easily guided into the outer rule 529. The pressing block 5212 is elastically arranged at the bottom of the pressing plate 528, and the outer side wall of the pressing block 5212 abuts against the inner side wall of the outer rule 529. When the pressing block 5212 is elastically pressed downward to press the stator sheet 6, the movement of the pressing block 5212 is guided by the outer rule 529, improving the pressing effect of the stator sheet 6. As shown in FIGS. 12 and 13, the thickness of the pressing block 5212 is less than the thickness of the outer rule 529, ensuring that the outer rule 529 simultaneously satisfies the elastic guiding of the pressing block 5212 and the positioning of the outer side wall of the stator sheet 6. The insertion slot 5219 is annularly arranged at the bottom of the pressing block 5212, and is in one-to-one correspondence with the second insertion rod 5118 of the bearing assembly 51. When the pressing block 5212 moves downward to press the stator sheet 6, the second insertion rod 5118 is inserted into the insertion slot 5219, and the cooperation of the second insertion rod 5118 and the insertion slot 5219 can guide the movement of the pressing block 5212 and improve the pressing effect of the stator sheet 6. As shown in FIG. 12, the clamping groove 5215 is arranged at the top of the pressing plate 528, the through groove 5216 is arranged at the bottom of the clamping groove 5215 and penetrates the pressing plate 528, and the diameter of the clamping groove 5215 is greater than the diameter of the through groove 5216, so that the joint of the clamping groove 5215 and the through groove 5216 forms a shoulder structure for clamping the clamping plate 5217. The fixed column 5218 is fixed at the top of the pressing block 5212 and penetrates the through groove 5216, the clamping plate 5217 is fixed at the top of the fixed column 5218 and is arranged in the clamping groove 5215, and the diameter of the clamping plate 5217 is greater than the diameter of the fixed column 5218. Therefore, when not pressing, the clamping plate 5217 abuts against the lower surface of the clamping groove 5215, at this time, the pressing block 5212 leaves a gap with the pressing plate 528, and since the clamping plate 5217 is clamped at the shoulder between the clamping groove 5215 and the through groove 5216, the pressing block 5212 will not fall off. When pressing, the pressing plate 528 moves downward to press the uppermost stator sheet 6, at this time, the pressing block 5212 rises to be flush with the pressing plate 528. The spring groove 5213 is arranged at the bottom of the pressing plate 528, and the spring 5214 is arranged in the spring groove 5213 and abuts against the upper surface of the pressing block 5212.Therefore, when not pressed, the card plate 5217 is against the lower surface of the card slot 5215, at this time the pressing block 5212 and the pressing plate 528 have a gap, because the card plate 5217 is clamped at the shaft shoulder between the card slot 5215 and the through slot 5216, so the pressing block 5212 will not fall off, and the spring 5214 is in an open state; when pressed, the pressing plate 528 moves downward to press the uppermost stator sheet 6, at this time the pressing block 5212 rises to be attached to the pressing plate 528, at this time the spring 5214 is in a compressed state, and the spring 5214 is used to achieve elastic pressing of the pressing block 5212, avoiding rigid pressing damage to the stator sheet 6 (the pressing of the stator sheet 6 is rigidly supported at the bottom and elastically pressed at the top). The spring 5214 here not only can play the role of elastic pressing to avoid rigid pressing damage to the stator sheet 6, but also has a more important role of material discharge: because the pressing block 5212 will be in contact with the uppermost stator sheet 6 when pressed, and the pressing block 5212 will easily take the uppermost stator sheet 6 again when it is reset, so the reset movement of the spring 5214 drives the reset of the pressing block 5212, assisting the material discharge of the uppermost stator sheet 6. The first avoiding slot 5220 penetrates the pressing block 5212, and the second avoiding slot 5221 penetrates the pressing plate 528 and is coaxially matched with the first avoiding slot 5220, avoiding the position of the inner gauge 5120 and avoiding interference when pressing the stator sheet 6. When the pressing thickness of the stator sheet 6 reaches the design requirement, the falling material assembly 53 clamps the pressed finished stator and transfers it to the subsequent conveying belt for conveying to the subsequent assembly station. As shown in FIG. 15, the falling material assembly 53 includes a first moving plate 530, a second moving plate 531, a carrying frame 532, an angle plate 533, and a clamping mechanism. The first moving plate 530 is slidably connected to the top of the assembly machine table through a slide rail and a slide block, and the second moving plate 531 is slidably connected to the top of the first moving plate 530 through a slide rail and a slide block (the first moving plate 530 and the second moving plate 531 are driven by straight-line cylinders, and the moving directions of the first moving plate 530 and the second moving plate 531 are perpendicular). The carrying frame 532 is fixed to the top of the second moving plate 531, the angle plate 533 is slidably connected to one side of the carrying frame 532 close to the bearing frame 510, and the clamping assembly is fixed to the angle plate 533 for clamping the pressed finished stator and transferring it to the subsequent conveying belt for conveying to the subsequent assembly station. As shown in FIG. 15, the clamping mechanism includes a finger cylinder 534, a second clamping plate 535, an avoiding arc 536, and a clamping block 537. The finger cylinder 534 is fixed to the angle plate 533, the second clamping plate 535 has two pieces and is fixed to the finger cylinder 534, and the second clamping plate 535 is driven by the finger cylinder 534 to move inward, thereby completing the clamping work of the finished stator. The clamping block 537 is fixed to the inner side of the second clamping plate 535, and the second clamping plate 535 moves inward to clamp the finished stator on the tray 5116 by the clamping block 537. The material of the clamping block 537 is rubber, which can avoid scratching the side wall of the stator when clamping the stator.The inner side of the clamping block 537 is provided with an avoiding arc 536. Since the finished stator is formed by laminating and bonding a plurality of stator sheets 6, the finished stator has a cylindrical shape. Therefore, the avoiding arc 536 is used to avoid the structure in the diameter direction of the finished stator, so as to facilitate the clamping of the clamping block 537.

[0033] The working steps of the stator assembly production line are as follows: an operator inserts the stator sheet 6 into the feeding structure 2, the feeding structure 2 clamps the uppermost stator sheet 6 and performs immersion activation agent treatment on the bottom surface of the stator sheet 6, and then transfers to the glue coating structure 3; the glue coating structure 3 performs top surface glue coating treatment on the stator sheet 6 after the bottom surface is immersed in the activation agent, and then transfers to the adjusting structure 4; the adjusting structure 4 performs angle adjustment and overturning treatment on each stator sheet 6 placed thereon. The angle adjustment treatment is to make each layer of stator sheets 6 be arranged at an equal angle during the bonding process of the stator, so that the insertion positions of the adjacent two layers of stator sheets 6 are staggered with each other and are engaged together, thereby avoiding the finished stator to be scattered at the insertion position and improving the stability of the subsequent stator structure. The overturning treatment is to overturn the stator sheet 6 by 180° in the vertical direction, so that the glue coating surface of the stator sheet 6 faces downward and the immersion activation agent surface faces upward, thereby facilitating the subsequent pressing. After the adjusting structure 4 adjusts the stator sheet 6, the stator sheet 6 is transferred to the pressing structure 5, the pressing structure 5 presses the stator sheet 6 placed thereon in sequence, so that the activation agent layer and the glue coating layer of the adjacent two layers of stator sheets 6 are in full contact, thereby forming a finished stator, and finally transferring to the subsequent process.

[0034] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A stator assembly production line in which a stator is assembled by laminating and bonding stator sheets, characterized by , it includes: frame; the feeding structure includes a feeding turntable rotatably arranged on the top of the frame, a support assembly annularly arranged on the top of the feeding turntable, a dip agent disc fixed on the top of the frame and located on one side of the feeding turntable, and a feeding assembly arranged on the top of the support assembly and the dip agent disc, the stator sheets are stacked on the support assembly, the feeding assembly sucks the single stator sheet on the uppermost layer of the support assembly and places it in the dip agent disc; the glue applying structure includes a glue applying turntable rotatably arranged on the top of the frame, a glue applying disc annularly arranged on the top of the glue applying turntable, and a glue applying assembly arranged on the outer side of the glue applying turntable, the feeding assembly sucks the stator sheet in the dip agent disc and places it on the glue applying disc, and the glue applying assembly applies glue to the upper surface of the stator sheet; the adjusting structure includes an angle adjusting assembly and a turnover assembly fixed on the top of the frame, a carrying assembly arranged above the glue applying disc and the angle adjusting assembly, and a transfer assembly arranged below the turnover assembly, the carrying assembly sucks the stator sheet in the glue applying disc and places it on the angle adjusting assembly or sucks the stator sheet on the angle adjusting assembly and places it on the turnover assembly, and the adjusting angle of the angle adjusting assembly is in an arithmetic progression; the pressing structure includes a bearing assembly and a pressing assembly; the bearing assembly includes a bearing frame, an inner gauge fixed on the top of the bearing frame, a tray telescopically arranged on the inner gauge, and a second inserting rod annularly arranged on the top of the bearing frame and penetrating the tray, the carrying assembly sucks the stator sheet on the transfer assembly and places it on the tray, and the inner gauge is used for limiting the inner side wall of the stator sheet; the pressing assembly includes a pressing frame arranged above the bearing frame, a pressing frame telescopically arranged on the bottom of the pressing frame, a pressing plate fixed on the bottom of the pressing frame, an outer gauge fixed on the bottom of the pressing plate, an elastic pressing block arranged on the bottom of the pressing plate and abutting against the inner side wall of the outer gauge, and an inserting slot annularly arranged on the bottom of the pressing block; when the pressing frame descends, the pressing block abuts against the upper surface of the stator sheet, the inserting slot is used for limiting the second inserting rod, and the outer gauge is used for limiting the outer side wall of the stator sheet.

2. The stator assembly production line of claim 1, wherein: the support assembly includes an outer fixed disc fixed on the top of the feeding turntable, a first inserting rod annularly arranged on the top of the outer fixed disc, a first guide portion obliquely arranged on the top of the first inserting rod, and an inner lifting disc telescopically arranged on the first inserting rod, and the stator sheet is inserted on the first inserting rod.

3. A stator assembly production line according to claim 2, wherein: the feeding assembly includes a feeding frame, a feeding plate movably arranged on one side of the feeding frame, a first lifting plate telescopically arranged on one side of the feeding plate, an air plate fixed on the bottom of the first lifting plate, a leveling plate fixed on the bottom of the air plate, a suction nozzle annularly arranged on the top of the air plate, and an air hole and an avoiding hole penetrating the leveling plate, and the suction nozzle is arranged in the air hole and is used for sucking the single stator sheet on the uppermost layer of the inner lifting disc.

4. A stator assembly production line according to claim 3, wherein: The feeding structure further comprises a second lifting plate arranged on the bottom of the feeding frame in a lifting manner, a separation disc fixed on the bottom of the second lifting plate, a separation air block arranged on the inner side wall of the separation disc in a ring shape, and an air groove arranged on the inner side of the separation air block, wherein the separation air block is used for separating the first layer of stator sheets and the second layer of stator sheets on the top of the inner lifting disc.

5. The stator assembly production line of claim 1, wherein: The angle adjusting assembly comprises an adjusting frame fixed on the top of the frame, a receiving disc rotatably arranged on the top of the adjusting frame, a first positioning block arranged on the top of the receiving disc in a ring shape, and a first positioning portion obliquely arranged on the top of the first positioning block, wherein the carrying assembly sucks the stator sheets in the glue applying disc and places the stator sheets on the receiving disc.

6. A stator assembly production line according to claim 5, wherein: The turnover assembly comprises a turnover frame fixed on the top of the frame, a third lifting plate arranged on one side of the turnover frame in a lifting manner, a turnover plate rotatably arranged on the side of the third lifting plate away from the turnover frame, an adjusting plate adjustably arranged on one side of the turnover plate, and suction mechanisms fixed on both sides of the adjusting plate, wherein the carrying assembly sucks the stator sheets in the receiving disc and places the stator sheets on the suction mechanisms, and the turnover assembly turns over the stator sheets so that the glue applying surface faces downward and the immersion agent surface faces upward.

7. The stator assembly production line of claim 1, wherein: The transfer assembly comprises a transfer frame fixed on the top of the frame, a transfer plate rotatably arranged on the top of the transfer frame, transfer discs fixed on the top of the transfer plate at intervals, and placing grooves arranged on the top of the transfer discs, wherein the inner diameter of the placing grooves is greater than the inner diameter of the stator sheets, and the outer diameter of the placing grooves is smaller than the outer diameter of the stator sheets, and the turnover assembly places the turned over stator sheets on the transfer discs.

8. A method of assembling a stator using the stator assembly line according to any one of claims 1 to 9, characterized by, It comprises the following steps: S1, stacking the stator sheets on the supporting assembly; S2, the feeding assembly sucking the single stator sheet on the uppermost layer of the supporting assembly and performing immersion activator treatment on the bottom surface of the stator sheet; S3, the glue applying structure performing top surface glue applying treatment on the stator sheet in S2; S4, the angle adjusting assembly adjusting the angle of the stator sheet in S3, and the adjusting angle of the angle adjusting assembly is in an arithmetic progression; S5, the turnover assembly turning over the stator sheet in S4 so that the glue applying surface of the stator sheet faces downward and the immersion activator surface faces upward; S6, placing the turned over stator sheet in S5 on the carrying assembly in sequence; and S7, the press fitting assembly press fitting the stator sheets on the carrying assembly in sequence, thereby forming the stator.

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