A core welding device for processing stator coils of single-tooth concentrated windings

Abstract

The present invention relates to the technical field of motor component assembly, and specifically proposes an iron core welding device for processing single-tooth concentrated winding stator wire packages; the device comprises a workbench; a workstation is provided on the workbench for switching between a welding station and an unloading station; two assembling fixtures are provided on the workstation; two internal positioning mechanisms are provided on the workstation through a support frame and are distributed one to one directly above the two assembling fixtures, and a welding mechanism is provided on the workbench; the device provided by the present invention is improved and designed based on the existing device, and is provided with an integrated assembling fixture for iron core assembly and clamping, which replaces the existing pre-assembly fixture and changes the existing iron core assembly operation process of pre-assembling and then clamping. The set assembly fixture adopts a continuous automatic assembly operation of horizontal feeding, flipping and switching, and pushing, clamping and assembling, which optimizes the assembly operation process, reduces the difficulty of assembly positioning, and improves the overall efficiency of the welding operation.

Description

Technical Field

[0001] The invention relates to the technical field of motor component assembly, and particularly proposes an iron core welding device for processing a single-tooth concentrated winding stator wire package. Background Art

[0002] A single-tooth concentrated winding stator is a stator with a coil wound on each tooth of the stator core. This simplifies the manufacturing process, reduces the end length, and improves flexibility. It is commonly used in brushless DC motors, permanent magnet synchronous motors, and other types of motors. Figure 5 The figure shows a multi-lobe structured single-tooth concentrated winding stator composed of multiple single-lobe cores. In some multi-lobe stators, the single-lobe cores are assembled using a high-precision positioning plug-in assembly design and are fixed in series with a pressure ring, while in other stators, the single-lobe cores are directly welded after assembly. Figure 5 The latter type of stator is shown.

[0003] Under the existing technology, Figure 5 The stator shown is basically welded automatically using professional welding equipment, and is designed with an assembly combination fixture for core assembly. Before welding, multiple cores need to be assembled and clamped by the assembly combination fixture, and the existing fixtures of this type are mostly pre-assembly fixtures, and the pre-assembly fixture is usually designed with a positioning structure that cooperates with the core. During assembly, the cores need to be manually inserted into the corresponding positions of the pre-assembly fixture one by one. The above assembly method has problems such as slow insertion and alignment and small assembly operation space. Therefore, the operation is difficult and inconvenient, and the assembly time is long. In addition, after assembly, the pre-assembly fixture needs to be manually placed in the specified position of the welding equipment system. After welding, the pre-assembly fixture needs to be taken out again, which greatly affects the overall efficiency of welding. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides an iron core welding device for processing a single-tooth concentrated winding stator wire package, which is used to solve the problems mentioned in the above background technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: a core welding device for processing a stator coil package of a single-tooth concentrated winding, comprising: a workbench; a workstation equipped on the workbench for switching between a welding station and a unloading station;

[0006] Two assembly fixtures are fixed on the workbench and cooperate with the two workstations; the assembly fixture includes an electric turntable fixed on the workbench table, and a fixture platform for placing the iron core is coaxially fixed on the table of the electric turntable. A plurality of guide bases equal to the number of assembled iron cores are evenly distributed around the center circumference on the fixture platform table, and each guide base is equipped with a clamping assembly for assembling and clamping the iron core; the fixture platform is equipped with a driving mechanism for synchronously driving multiple clamping assemblies, and the iron core can be placed horizontally on the clamping assembly. When driven, under the guidance of the guide base, the clamping assembly drives the iron core to flip from a horizontal state to a vertical state, and gradually completes the assembly and clamping; two internal positioning mechanisms are installed on the workbench through a supporting frame, and are distributed one by one directly above the two assembly fixtures, for positioning the inner side of the assembled iron core; and a welding mechanism is used to perform iron core welding at the welding station. During welding, the clamping assembly can spray cooling gas to the assembly seam on both sides of the iron core.

[0007] Preferably, the clamping assembly includes: a sliding hinge seat, which is installed on the guide base for radial sliding along the electric turntable; a clamping block base, which is hinged on the sliding hinge seat and connected to the driving end of the driving mechanism; an assembled clamping block, which is slidably installed on the clamping block base, and the assembled clamping block and the clamping block base are elastically connected and keep synchronous flipping; when the assembled clamping block is in a horizontal state, the assembled clamping block slides vertically on the clamping block base; the clamping surface of the assembled clamping block matches the profile of the iron core, and the clamping surface of the assembled clamping block is provided with positioning ribs for positioning in cooperation with the iron core, and the clamping surface of the assembled clamping block is also provided with a lower supporting part for supporting the iron core during flipping; cooling gas can be sprayed outward on both sides of the assembled clamping block.

[0008] Preferably, the fixture platform includes: a guide cylinder, which is coaxially arranged and fixed on the table surface of the electric turntable; a platform plate, which is horizontally fixed on the top of the guide cylinder; and a raised material table, which is used to support the iron core and is in a circular shape, and is arranged together with the guide cylinder and fixed on the upper end surface of the platform plate; multiple guide bases are evenly distributed around the raised material table and are all fixed on the upper end surface of the platform plate.

[0009] Preferably, the assembling clamp is an arc plate structure, and an air intake channel with one end open and the other end closed is axially opened on the assembling clamp. The assembling clamp is also provided with a plurality of dispersed channels distributed along the axial direction and all connected to the air intake channel, and the dispersed channels extend along the arc of the assembling clamp to both sides.

[0010] Preferably, the guide base includes: a slide rail base, fixed on the upper end surface of the platform plate; a sliding hinge seat slidably installed on the slide rail base, and sliding radially along the raised material platform; and at least one guide hole plate, fixed on the slide rail base, a track guide hole is opened on the guide hole plate, and the track guide hole includes a quarter arc segment and a horizontal segment horizontally tangent to the arc segment; a movable pin that moves along the track guide hole is horizontally installed on the clamping block base; under the drive of the driving mechanism, when the movable pin moves along the arc segment, the assembled clamping block together with the clamping block base flips from a horizontal state to a vertical state, and when the movable pin moves along the horizontal section, the assembled clamping block and the clamping block base together with the sliding hinge seat in the vertical state further move horizontally toward the center of the raised material platform.

[0011] Preferably, the driving mechanism comprises: a lifting cylinder, which is provided for lifting and driving and is vertically slidably mounted on the guide cylinder;

[0012] Multiple driven vertical rods are vertically fixed on the top of the lifting cylinder and are arranged in a one-to-one correspondence with multiple clamping assemblies; and multiple connecting rods have one end hinged on the top of the multiple driven vertical rods and the other end hinged on the clamping block base of the corresponding clamping assembly.

[0013] Preferably, a plurality of avoidance grooves corresponding to a plurality of clamping components are provided on the outer side wall of the raised material platform, and the avoidance grooves extend axially along the raised material platform. When the assembled clamping blocks approach the center of the raised material platform, the lower supporting part can extend into the avoidance groove, and the supporting surface of the lower supporting part is flush with the upper end surface of the raised material platform.

[0014] Preferably, the support frame is a separation cover that separates the welding station and the unloading station from each other, the separation cover is fixed on the table surface of the workstation, and the internal positioning mechanism is fixed on the top of the separation cover.

[0015] Preferably, the inner positioning mechanism comprises an inner positioning block which is arranged to be lifted and lowered, and the inner positioning block is in a cylindrical structure. A pressure ring is provided on the inner positioning block for synchronously pressing the top ends of the multiple assembled iron cores.

[0016] Preferably, the welding mechanism is arranged in conjunction with the welding station, and the welding mechanism includes: a avoidance base, which is horizontally slidably installed on the table top of the workbench; a lifting frame, which is fixed on the avoidance base; and a welding gun, which is fixedly assembled on the lifting end of the lifting frame.

[0017] The above technical solution has the following advantages or beneficial effects: The present invention provides an iron core welding device for processing single-tooth concentrated winding stator wire packages, which is improved and designed based on the existing equipment, and is provided with an integrated assembly fixture for iron core assembly and clamping, replacing the existing pre-assembly fixture, and changing the existing iron core assembly operation process of pre-assembly and then clamping. The set assembly fixture adopts a continuous automatic assembly operation of horizontal discharge, flipping and positioning, and push-clamping assembly. There is no need to take the split pre-assembly fixture in and out of the welding system, which optimizes the assembly operation process, reduces the difficulty of assembly positioning, and improves the overall efficiency of the welding operation; in addition, a cooling gas channel is provided in the assembly fixture, which can synchronously cool the weld position during the welding process to improve the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention and its features, configurations and advantages will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings, in which like reference numerals indicate like parts throughout the drawings, which are not drawn to scale, with emphasis placed on illustrating the subject matter of the present invention.

[0019] Figure 1 The present invention provides a schematic diagram of the three-dimensional structure of an iron core welding device for processing a single-tooth concentrated winding stator wire package.

[0020] Figure 2 The present invention provides a front view of an iron core welding device for processing a single-tooth concentrated winding stator coil package.

[0021] Figure 3 The figure is a side view of an iron core welding device for processing a single-tooth concentrated winding stator coil package provided by the present invention.

[0022] Figure 4 It is a partial stereoscopic view of an iron core welding device for processing a single-tooth concentrated winding stator wire package provided by the present invention.

[0023] Figure 5 This is a three-dimensional structural diagram of a single-tooth concentrated winding stator.

[0024] Figure 6 It is a three-dimensional diagram of the iron core in the assembled and clamped state in the assembly fixture.

[0025] Figure 7 It is a three-dimensional cross-sectional view of the assembly fixture.

[0026] Figure 8 yes Figure 7 A partial enlarged view of point A in the middle.

[0027] Figure 9 yes Figure 7 A partial enlarged view of point B in the middle.

[0028] In the figure: 1. workbench; 11. workstation.

[0029] 2. Assembling fixture; 21. Electric turntable; 22. Fixture platform; 221. Guide cylinder; 222. Platform plate; 223. Raised material table; 224. Avoidance groove; 23. Guide base; 231. Slide rail base; 232. Guide hole plate; 233. Track guide hole; 24. Clamping assembly; 241. Sliding hinge seat; 242. Clamp block base; 243. Moving pin; 25. Assembling clamp block; 251. Positioning rib; 252. Lower support part; 253. Air intake channel; 254. Dispersion channel; 26. Spring; 27. Driving mechanism; 271. Driving cylinder; 272. Lifting cylinder; 273. Connecting plate; 274. Ear plate; 275. Driven vertical rod; 276. Connecting rod.

[0030] 3. Partition cover; 31. Partition plate; 32. Side plate; 33. Top plate.

[0031] 4. Internal positioning mechanism; 41. Lifting cylinder; 42. Travel seat; 43. Guide column; 44. Internal positioning block; 441. Pressing ring.

[0032] 5. Welding mechanism; 51. Avoidance base; 52. Lifting frame; 53. Welding gun.

[0033] 6. Single-tooth concentrated winding stator; 61. Single-lobe iron core. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] like Figure 1 、 Figure 2 and Figure 5 As shown, a core welding device for processing stator coils of single-tooth concentrated winding is used for Figure 5 The single-lobe iron core 61 shown is assembled and welded to form a multi-lobe structure single-tooth concentrated winding stator 6. The number of single-lobe iron cores 61 of the stator is specifically eight. The stator structure after assembly and welding can be seen in detail. Figure 5As shown, in addition, the single-lobe iron core 61 has been pre-installed with a winding coil before assembly, and the single-lobe iron core 61 will be referred to as the iron core hereinafter; the equipment includes a workbench 1; the workbench 1 is equipped with a workstation 11 for switching between a welding station and an unloading station, and the workstation 11 is a common rotary table for realizing rotational switching between two stations, and the workstation 11 is rotatably installed on the workbench 1 and can be driven by a motor.

[0037] like Figure 2 、 Figure 3 、 Figure 6 and Figure 7 As shown, the work station table 11 is equipped with two assembly fixtures 2 corresponding to the two work stations one by one; the assembly fixture 2 includes an electric turntable 21 fixed to the table top of the work station table 11 by bolts. The electric turntable 21 is an existing common equipment. In this embodiment, the electric turntable 21 rotates one-eighth of a circle intermittently each time; a fixture platform 22 is coaxially fixed on the table top of the electric turntable 21, and the fixture platform 22 includes a guide cylinder 221 fixed to the table top of the electric turntable 21 by screws, a platform plate 222 fixed horizontally to the top of the guide cylinder 221 by screws, and a raised material platform 223 fixed to the upper end face of the platform plate 222 by screws. The guide cylinder 221 is a cylindrical structure, the platform plate 222 is a disc structure, the raised material platform 223 is annular and is used to support the placement of the iron core, and the guide cylinder 221, the platform plate 222 and the raised material platform 223 are coaxially assembled.

[0038] like Figure 6 、 Figure 7 and Figure 8 As shown, eight guide bases 23 are evenly distributed around the central circumference on the surface of the platform plate 222, and the eight guide bases 23 are distributed on the periphery of the raised material platform 223. Each guide base 23 is equipped with a clamping assembly 24 for assembling and clamping the iron core; the guide base 23 includes a slide rail base 231 welded to the upper end face of the platform plate 222, and two guide hole plates 232 are welded on the slide rail base 231, and the two guide hole plates 232 are arranged relative to each other in a horizontal direction perpendicular to the guiding direction of the slide rail base 231; a track guide hole 233 is opened on the guide hole plate 232, and the track guide hole 233 includes a quarter arc segment and a horizontal segment horizontally tangent to the arc segment.

[0039] like Figure 6 、 Figure 7 、 Figure 8 and Figure 9As shown, the clamping assembly 24 includes a sliding hinge seat 241 mounted on the slide rail base 231 for radial sliding movement along the pad material platform 223, a clamping block base 242 hinged on the sliding hinge seat 241, and an assembling clamping block 25 slidably mounted on the clamping block base 242. A moving pin 243 that moves along the track guide holes 233 on the two guide hole plates 232 is mounted on the clamping block base 242 for horizontal rotation. Two springs 26 are welded between the assembling clamping block 25 and the clamping block base 242. Under the guidance of the arc segment of the track guide hole 233, the assembling clamping block 25 is assembled. The clamping block 25 can be flipped from a horizontal state to a vertical state along with the clamping block base 242; when the assembled clamping block 25 is in a horizontal state, the assembled clamping block 25 slides vertically on the clamping block base 242; the assembled clamping block 25 is an arc plate structure, and in the horizontal state, the clamping surface of the assembled clamping block 25 is vertically upward, and the iron core can be directly placed horizontally on the clamping surface of the assembled clamping block 25, and the clamping surface of the assembled clamping block 25 matches the profile of the iron core. The clamping surface of the assembled clamping block 25 is provided with a positioning rib 251 that cooperates with the placement of the iron core, such as Figure 5 The outer wall of the iron core is provided with a semicircular groove extending in the axial direction. The positioning rib 251 can be positioned and inserted in the semicircular groove to achieve the centering limit of the iron core relative to the assembly clamp 25. The clamping surface of the assembly clamp 25 is also provided with a lower support portion 252 for supporting the iron core when it is turned over. The outer wall of the raised material platform 223 is provided with eight avoidance grooves 224 corresponding to the eight clamping assemblies 24. The avoidance grooves 224 extend axially along the raised material platform 223. The lower support portion 252 can extend into the avoidance grooves 224 at the corresponding position. When the assembly clamp 25 is in a vertical state, the supporting surface of the lower support portion 252 is flush with the upper end surface of the raised material platform 223.

[0040] like Figure 8 and Figure 9 As shown, the assembly block 25 can spray cooling gas toward the assembly seams on both sides of the core. An air inlet channel 253 is axially formed on the assembly block 25, with one end open and the other closed. When the assembly block 25 is in a vertical position, the end of the air inlet channel 253 is located at the top of the assembly block 25. The end of the air inlet channel 253 can be connected to an external air pipe to allow cooling gas to enter. In this embodiment, the cooling gas can be nitrogen. The assembly block 25 is also provided with five dispersion channels 254 evenly distributed along the axial direction and connected to the air inlet channel 253. The dispersion channels 254 extend along the arc of the assembly block 25 to both sides. Nitrogen enters the inner cavity of the assembly block 25 through the air inlet channel 253 and is then discharged outward through the five dispersion channels 254.

[0041] like Figure 6 、 Figure 7 and Figure 8As shown, the fixture platform 22 is equipped with a driving mechanism 27 for synchronously driving the eight clamping assemblies 24; the driving mechanism 27 includes a lifting cylinder 272 that is vertically slidably mounted on the guide cylinder 221, and the lifting cylinder 272 and the guide cylinder 221 are key-matched. A connecting plate 273 is horizontally welded to the bottom end of the lifting cylinder 272, and a clearance window is opened on the guide cylinder 221. The connecting plate 273 extends into the guide cylinder 221 through the clearance window. A driving cylinder 271 is vertically fixed on the table of the electric turntable 21. The output end of the driving cylinder 271 is fixed to the connecting plate 273 by bolts; eight ear plates 274 are welded to the top of the lifting cylinder 272, which are evenly distributed around the center circumference and extend horizontally to the outside of the cylinder. A driven vertical rod 275 is vertically welded on each ear plate 274, and a connecting rod 276 is hinged to the top of each driven vertical rod 275. The eight connecting rods 276 are arranged in a one-to-one correspondence with the eight clamping assemblies 24, and the other end of the connecting rod 276 is hinged to the clamping block base 242 of the corresponding clamping assembly 24.

[0042] Under the guidance of the guide base 23, the eight clamping assemblies 24 can be synchronously driven by the driving mechanism 27, so that the assembled clamping block 25 can be flipped from the horizontal state to the vertical state, and further approach the center of the padding platform 223 while maintaining the vertical state. Specifically, after the driving cylinder 271 is started, the lifting cylinder 272 is driven to rise along the guide cylinder 221, and the driven vertical rod 275 rises synchronously with the lifting cylinder 272. The driven vertical rod 275 pushes the clamping block base 242 through the connecting rod 276, and the moving pin 243 is moved. It can only move along the arc section of the track guide hole 233 first. At this time, the sliding hinge seat 241 remains stationary, and the assembling clamp 25 together with the clamp base 242 gradually flips from the horizontal state to the vertical state. Then, the moving pin 243 moves along the horizontal section of the track guide hole 233. At this time, the assembling clamp 25 continues to maintain the vertical state. Under the further push of the connecting rod 276, the assembling clamp 25 and the clamp base 242 together with the sliding hinge seat 241 further move horizontally toward the center of the raised material platform 223.

[0043] like Figure 2 and Figure 4As shown, the workbench 11 is equipped with a partition cover 3 that separates the welding station and the unloading station from each other. The partition cover 3 includes a partition plate 31 centrally distributed between the two assembling fixtures 2 and vertically welded to the table top of the workbench 11. The left and right ends of the partition plate 31 are relatively vertically welded with side plates 32, and a top plate 33 is horizontally welded between the partition plate 31 and the top ends of the two side plates 32; the top plate 33 is equipped with two internal positioning mechanisms 4 that are distributed one to one directly above the two assembling fixtures 2, and the internal positioning mechanism 4 includes a lifting cylinder 41 vertically fixed to the top of the top plate 33 by bolts, and a travel seat 42 is welded to the output end of the lifting cylinder 41. The top surface of the travel seat 42 is welded with two guide columns 43 vertically slidably mounted on the top plate 33, and the bottom end surface of the travel seat 42 is welded with an internal positioning block 44 with a cylindrical structure. The internal positioning block 44 is provided with a pressure ring 441 for synchronously pressing the top ends of the multiple assembled iron cores.

[0044] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the workbench 1 is equipped with a welding mechanism 5 for performing iron core welding at the welding station, and the welding mechanism 5 includes a avoidance base 51 horizontally slidably installed on the surface of the workbench 1, a lifting frame 52 welded on the avoidance base 51, and a welding gun 53 fixed to the lifting end of the lifting frame 52 by bolts; it should be noted that the avoidance base 51 can be an existing electric sliding base, and the lifting frame 52 can be driven to rise and fall by a hydraulic cylinder or a motor screw. The driving structure of the avoidance base 51 and the lifting frame 52 is not described in detail here. The welding gun 53 is specifically a laser welding head, that is, in the present invention, laser welding is used for welding the iron core. Here, the welding gun 53 refers to the existing overall equipment for laser welding.

[0045] The welding equipment provided by the present invention is used for Figure 5 The single-petal core 61 shown is assembled and welded. The welding operation process is described below:

[0046] Unloading stage

[0047] The assembly clamps 25 are in a horizontal state, and the eight cores to be assembled can be manually placed on the eight assembly clamps 25 in sequence. The positioning ribs 251 can center and position the cores to complete pre-positioning. It should be added that during the placement of the cores, in order to facilitate placement, the electric turntable 21 can be intermittently rotated. In addition, a corresponding manipulator or automatic feeding equipment can be installed to replace manual feeding, thereby completing the sequential placement of the cores, thereby further improving the automation level of the equipment.

[0048] Automatic assembly stage

[0049] Under the guidance of the guide base 23, the clamping assembly 24 is driven by the driving mechanism 27. During the flipping process, the iron core flips to a vertical state synchronously with the assembly clamp 25. The iron core slides down along the clamping surface of the assembly clamp 25 and falls on the plane formed by the lower support part 252 and the surface of the raised material platform 223. Then, the iron core moves toward the center of the raised material platform 223 in a vertical state synchronously with the push of the assembly clamp 25. The lower support part 252 extends into the avoidance groove 224, and the adjacent iron core side walls are in contact. As the spring 26 is gradually compressed, the iron cores are automatically assembled and clamped.

[0050] Downward pressure phase

[0051] Start the lifting cylinder 41 at the welding station, drive the inner positioning block 44 down, and extend it into the circular hole surrounded by the eight iron cores. Then the pressure ring 441 is pressed tightly on the top of the eight iron cores to further ensure the stability of the iron core assembly.

[0052] Welding stage

[0053] The assembling clamp 25 is in a ventilated state, the welding gun 53 is aimed at one of the welding assembly seam positions, and the lifting frame 52 drives the welding gun 53 to perform automatic laser welding along the vertical assembly seam. During the welding process, the assembling clamp 25 synchronously sprays out nitrogen for cooling and protection, which cools the weld in time and prevents oxidation of the weld. Driven by the intermittent rotation of the electric turntable 21, the welding of the eight assembly seam positions is gradually completed in sequence.

[0054] Unloading stage

[0055] The avoidance base 51 drives the lifting frame 52 and the welding gun 53 to move to one side to avoid the work station 11 and all structures installed on the work station 11. Then, the work station 11 rotates, and the stator that has been assembled and welded is rotated along with the assembly fixture 2 from the welding station to the unloading station. At the unloading station, the driving mechanism 27 drives the clamping assembly 24 to automatically release the clamping, and then the stator can be taken out.

[0056] The present invention provides an iron core welding device for processing single-tooth concentrated winding stator wire packages. The device is improved and designed based on the existing equipment, and is provided with an integrated assembly fixture for assembling and clamping the iron core, which replaces the existing pre-assembly fixture and changes the existing iron core assembly operation process of pre-assembling and then clamping. The set assembly fixture adopts a continuous automatic assembly operation of horizontal material discharge, flipping and positioning, and pushing, clamping and assembling. There is no need to take the split pre-assembly fixture in and out of the welding system, which optimizes the assembly operation process, reduces the difficulty of assembly positioning, and improves the overall efficiency of the welding operation. In addition, a cooling gas channel is provided in the assembly fixture, which can synchronously cool the weld position during the welding process to improve the welding quality.

[0057] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0058] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0059] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can make many possible changes and modifications without departing from the technical solution of the present invention, or modify them into equivalent embodiments with equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention that do not depart from the content of the technical solution of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A core welding device for processing stator coils of a single-tooth concentrated winding, characterized in that: include: Workbench; the workbench is equipped with a workstation for switching between welding station and unloading station; Two assembly fixtures are fixed on the workstation table and cooperate with the two workstations; the assembly fixture includes an electric turntable fixed on the workstation table, on the table of the electric turntable is coaxially fixedly installed a fixture platform for placing the iron core, and a plurality of guide bases are evenly distributed around the central circumference on the fixture platform surface, which is equal to the number of iron cores to be assembled, and each guide base is correspondingly equipped with a clamping assembly for assembling and clamping the iron core; the clamping platform is equipped with a driving mechanism for synchronously driving multiple clamping assemblies, and the iron core can be placed horizontally on the clamping assembly. When driven, under the guidance of the guide base, the clamping assembly drives the iron core to flip from a horizontal state to a vertical state, and gradually completes the assembly and clamping; Two inner positioning mechanisms are installed on the workbench through the support frame and are distributed one by one directly above the two assembly fixtures to position the inner side of the assembled iron core; and a welding mechanism for performing core welding at the welding station. During welding, the clamping assembly can spray cooling gas toward the assembly seams on both sides of the core; The clamping assembly comprises: A sliding hinge seat is mounted on the guide base for sliding along the radial direction of the electric turntable; The clamping block base is hinged on the sliding hinge seat and connected to the driving end of the driving mechanism; The assembling clamp is slidably installed on the clamp base, and the assembling clamp is elastically connected to the clamp base and keeps synchronous flipping; when the assembling clamp is in a horizontal state, the assembling clamp slides vertically on the clamp base; the clamping surface of the assembling clamp matches the profile of the iron core, and the clamping surface of the assembling clamp is provided with positioning ribs for positioning in coordination with the placement of the iron core, and the clamping surface of the assembling clamp is also provided with a lower supporting part for supporting the iron core when flipping; cooling gas can be sprayed outward on both sides of the assembling clamp.

2. The core welding equipment for processing stator coils of a single-tooth concentrated winding according to claim 1, characterized in that: The fixture platform includes: The guide cylinder is coaxially arranged and fixed on the table of the electric turntable; The platform plate is fixed horizontally on the top of the guide cylinder; And a raised material platform for supporting and placing the iron core, which is in a circular ring shape, is arranged together with the guide cylinder and fixed on the upper end surface of the platform plate; multiple guide bases are evenly distributed around the raised material platform and are all fixed on the upper end surface of the platform plate.

3. The core welding equipment for processing stator coils of a single-tooth concentrated winding according to claim 1, characterized in that: The assembling clamp is in the form of an arc plate structure, and an air intake channel with one end open and the other end closed is axially opened on the assembling clamp. The assembling clamp is also provided with a plurality of dispersed channels distributed along the axial direction and all connected to the air intake channel. The dispersed channels extend along the arc of the assembling clamp to both sides.

4. The core welding equipment for processing stator coils of a single-tooth concentrated winding according to claim 2, characterized in that: The guide base comprises: The slide rail base is fixed on the upper end surface of the platform plate; the sliding hinge seat is slidably installed on the slide rail base and slides along the radial direction of the raised material table; And at least one guide hole plate is fixed on the slide rail base, and a track guide hole is opened on the guide hole plate, and the track guide hole includes a quarter arc segment and a horizontal segment horizontally tangent to the arc segment; a movable pin that moves along the track guide hole is horizontally installed on the clamping block base; under the drive of the driving mechanism, when the movable pin moves along the arc segment, the assembled clamping block together with the clamping block base flips from a horizontal state to a vertical state, and when the movable pin moves along the horizontal segment, the assembled clamping block and the clamping block base move horizontally toward the center of the raised material platform together with the sliding hinge seat in the vertical state.

5. The core welding equipment for processing stator coils of a single-tooth concentrated winding according to claim 2, characterized in that: The driving mechanism comprises: A lifting cylinder is provided with a lifting drive and is vertically slidably mounted on the guide cylinder; A plurality of driven vertical rods are vertically fixed on the top of the lifting cylinder and are arranged in a one-to-one correspondence with the plurality of clamping assemblies; And a plurality of connecting rods, one end of which is hinged to the top end of the plurality of driven vertical rods one by one, and the other end of which is hinged to the clamping block base of the corresponding clamping assembly.

6. The core welding equipment for processing stator coils of a single-tooth concentrated winding according to claim 4, characterized in that: The outer side wall of the raised material platform is provided with a plurality of avoidance grooves corresponding to the plurality of clamping components. The avoidance grooves extend axially along the raised material platform. When the assembled clamping blocks approach the center of the raised material platform, the lower supporting part can extend into the avoidance groove, and the supporting surface of the lower supporting part is flush with the upper end surface of the raised material platform.

7. The core welding equipment for processing stator coils of a single-tooth concentrated winding according to claim 1, characterized in that: The supporting frame is a separation cover that separates the welding station and the unloading station from each other. The separation cover is fixed on the table surface of the workstation, and the internal positioning mechanism is fixed on the top of the separation cover.

8. The core welding equipment for processing stator coils of a single-tooth concentrated winding according to claim 1, characterized in that: The inner positioning mechanism comprises an inner positioning block which is arranged to be lifted and lowered. The inner positioning block is in a cylindrical structure and is provided with a pressure ring for synchronously pressing the top ends of the assembled multiple iron cores.

9. The core welding equipment for processing stator coils of a single-tooth concentrated winding according to claim 1, characterized in that: The welding mechanism is arranged in conjunction with the welding station, and the welding mechanism includes: The avoidance base is installed on the workbench surface with horizontal sliding; The lifting frame is fixed on the avoidance base; and a welding gun, which is fixedly assembled on the lifting end of the lifting frame.

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