A segmented stator circle welding device and a circle welding method

Abstract

The application discloses a kind of block type stator circle welding equipment and circle welding method, including workbench, for stator block core transfer transfer device on workbench, for stator block core circle fastening pressure fastening rotation ejection integrated device, for the welding laser welding device of stator block core for circle fastening.The pressure fastening rotation ejection integrated device of this scheme design, realize the transfer device of the block core through the pre-circle of block core, transfer device fast pre-circle of split core is quickly placed into cage circle fastening seat, then press fastening cover body, very fast and high synchronism to each block core realizes circle and compaction.The pressure of needle disc is pressed, the whole body and up and down of the stator core of circle are realized, then the welding of laser welding device is realized under the condition of whole body and up and down pressure, so that the yield of the product of the block type stator circle welding is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of motor stator processing, in particular to a block type stator circle splicing welding equipment and a circle splicing welding method. BACKGROUND

[0002] The block type stator is a kind of motor design, in which the stator is divided into multiple parts or blocks. This design allows more flexible configuration and maintenance, while also helping to improve the performance of the motor. When multiple stator cores are assembled into a whole, circle splicing and welding are required, and special tooling equipment needs to be used during circle splicing and welding. For example, the utility model authorized announcement No. CN219358268U discloses a stator laser welding machine. Before the stator core blocks are welded, they are in a loose state, and each stator core block needs to be circle spliced, pressed and fixed. The mechanism for realizing circle splicing and pressing in the patent includes a pressing assembly for pressing the upper surface of the stator, an inner support assembly for supporting the inner side wall of the stator, and a tight assembly for abutting the outer side wall of the stator. The pressing assembly includes a downward driving cylinder and a pressing head, and the pressing head is installed on the shaft end of the downward driving cylinder and can be lowered to abut the upper surface of the stator. The inner support assembly includes a lifting driving cylinder and an inner support block, and the inner support block is installed on the shaft end of the lifting driving cylinder and can be lifted into the inner side wall of the stator. The tight assembly includes a tight driving motor, a screw rod and a tight block, and the screw rod is installed on the shaft end of the tight driving motor and rotates with the tight block. The tight block can be moved to abut the outer side wall of the stator. In this technical solution, the tight block of each stator core block is driven by a tight driving motor and a screw rod. Therefore, the more stator core blocks, the more tight driving motors, screw rods and tight blocks are needed. For example, if there are twelve blocks in a stator, twelve tight driving motors, screw rods and tight blocks are needed. The installation and wiring of twelve tight driving motors are complex and costly. On the other hand, to realize the standardization of circle splicing, twelve tight driving motors need to be adjusted to work synchronously, which requires high precision and increases the difficulty of equipment installation and adjustment. Therefore, further research and innovation are needed for the circle splicing and welding of the existing block type stator to solve the above problems. SUMMARY

[0003] The present application aims to provide a block type stator circle splicing welding equipment and a circle splicing welding method, which solves the problems of complex mechanism design, difficult installation and adjustment, and high cost of existing circle splicing and welding.

[0004] To achieve the above object, the technical scheme disclosed by the application is a block type stator circle welding equipment, which comprises a workbench, a transfer device arranged on the workbench for transferring stator block cores, a pressing and fastening rotary ejection integrated device for fastening and ejection of the stator block cores, and a laser welding device for welding the stator block cores. The pressing and fastening rotary ejection integrated device comprises a cage type fastening seat, a fastening cover sleeved on the cage type fastening seat, and a lifting mechanism for driving the fastening cover to press down. The cage type fastening seat is provided with a stator block core circle containing cavity and a plurality of first abutting blocks abutting against the outer sides of each block core. The fastening cover is provided with a plurality of second abutting blocks for driving the plurality of first abutting blocks to fold towards the center. The bottom of the cage type fastening seat is provided with a rotating mechanism for driving the cage type fastening seat to rotate and an ejection mechanism. The fastening cover is provided with an up-down driving mechanism for driving the fastening cover to move up and down.

[0005] Further, the cage type fastening seat comprises a hollow cylindrical body, a fastening seat bottom plate arranged at the lower end of the hollow cylindrical body, a plurality of vertical first through hole positions and second through hole positions uniformly arranged along the circumference of the sidewall of the hollow cylindrical body, the first through hole positions and the second through hole positions being arranged alternately, the first through hole positions being mounting through holes for mounting the first abutting blocks, the first abutting blocks being provided with a transversely penetrating notch, the notch being provided with an abutting compression spring at the rear side, the front side of the abutting compression spring being provided with a reset abutting block, the sidewall of the first through hole position being provided with a first guide groove for the front and back movement of the reset abutting block, and the circumference of the fastening cover being provided with a third through hole position opposite to the second through hole position.

[0006] Further, the first abutting block is provided with a pin shaft at the middle part close to the rear side, the first through hole position is provided with a second guide groove for the front and back movement of the pin shaft, the notch of the first guide groove is provided with a pressing block, and the pressing block is connected to the hollow cylindrical body by a screw to realize the assembly of the first abutting block in the first through hole position.

[0007] Further, the lower end of the fastening seat bottom plate is provided with a hollow support column, the lower end of the hollow support column is connected to a hollow T-shaped shaft, the hollow T-shaped shaft is sleeved with a T-shaped bearing seat, the T-shaped bearing seat is sleeved with a support plate, the T-shaped bearing seat is fixedly connected to the support plate, the bottom of the support plate is provided with a hollow position corresponding to the workbench, the lower end of the hollow T-shaped shaft is provided with a first synchronous wheel, the side of the support plate or the bottom of the workbench is provided with a first servo motor and a second synchronous wheel, the first synchronous wheel and the second synchronous wheel are provided with a synchronous belt, the first servo motor drives the second synchronous wheel to rotate, drives the first synchronous wheel to rotate, and drives the cage type fastening seat to rotate.

[0008] Further, the hollow support column is provided with the ejection mechanism, the ejection mechanism comprises a plurality of ejector rods, an ejector rod fixing plate connected to the lower ends of the plurality of ejector rods, a connecting rod arranged at the lower end of the ejector rod fixing plate, a first air cylinder arranged at the lower end of the hollow T-shaped shaft, the push rod of the first air cylinder is connected to the connecting rod, the connecting rod is arranged in the hollow T-shaped shaft, the upper end of the connecting rod is connected to the ejector rod fixing plate, the fastening seat bottom plate is provided with a plurality of hole positions through which the plurality of ejector rods pass, and the first air cylinder drives the connecting rod to drive the plurality of ejector rods to move up and down.

[0009] Further, the bottom of the support plate is provided with a sliding block on each side, the sliding block is connected with a first guide rail, the first guide rail is fixed on both sides of the hollow position on the workbench, the side edge of the support plate is provided with a second air cylinder for driving the support plate to move back and forth along the first guide rail, and the cage type circle assembling fastening seat is driven by the second air cylinder to move to the lower side of the transfer device.

[0010] Further, the transfer device comprises a first support, a placing platform arranged at the upper end of the first support, and a second support arranged on the placing platform, the second support is provided with a second guide rail vertically downward, a sliding block support and a third air cylinder, the lower end of the sliding block support is provided with a pushing column, the placing platform is provided with a placing through hole, a pre-assembled circle jig containing a pre-assembled stator segment core is placed through the placing through hole, and the third air cylinder drives the sliding block support to drive the pushing column to push the stator segment core in the pre-assembled circle jig downward into the cage type circle assembling fastening seat.

[0011] Further, the lifting mechanism comprises guide shafts vertically arranged on both sides of the hollow position of the workbench respectively, an oil-free bushing is sleeved on the guide shaft, a movable plate is arranged on the oil-free bushing, a hole is arranged at the center of the movable plate, a bearing and a rotating shaft connecting piece are arranged in the hole, a flange connecting part is integrally formed at the lower end of the rotating shaft connecting piece, an upper cover plate is arranged at the top of the fastening cover body, the flange connecting part is connected to the upper cover plate through a shaft rod, a top needle disc for pressing the upper end surface of the stator segment core is arranged in the upper cover plate, a fourth air cylinder for driving the top needle disc to press downward is arranged on the top surface of the upper cover plate, a top mounting plate is arranged at the top of the guide shaft, a servo cylinder is arranged on the top mounting plate, a hole through which a screw rod of the servo cylinder passes is arranged on the top mounting plate, an active joint is connected to the front end of the screw rod of the servo cylinder, a connecting bracket is arranged at a position corresponding to the rotating shaft connecting piece on the movable plate, the connecting bracket is provided with a connecting socket, the active joint is connected in the connecting socket, the servo cylinder drives the movable plate to move up and down, and drives the fastening cover body to move up and down.

[0012] Preferably, a pressure sensor is arranged on the corresponding connecting support in the connecting socket for acquiring the pressure value of the servo cylinder driving the movable joint to press down; a groove is arranged on the top side of the rotating shaft connector, a fifth cylinder is arranged on the movable plate, the push rod of the fifth cylinder is connected to a positioning push block, the front end of the positioning push block is pushed into the groove for locking when the fastening cover rotates to the original position.

[0013] A stator circle welding method using a block type stator circle welding device, comprising the following steps:

[0014] S1, placing a pre-circular jig containing pre-circular stator block cores in a transfer device;

[0015] S2, moving the cage type circle fastening seat below the transfer device by the second cylinder;

[0016] S3, the third cylinder of the transfer device drives the slide block bracket to push the stator block cores in the pre-circular jig into the cage type circle fastening seat;

[0017] S4, moving the cage type circle fastening seat below the fastening cover by the second cylinder;

[0018] S5, the front end of the positioning push block of the fifth cylinder is pushed into the groove on the top side of the rotating shaft connector connected to the fastening cover to complete the fastening cover at the initial original position;

[0019] S6, the servo cylinder drives the movable plate to move down along the guide shaft, driving the fastening cover to press down on the cage type circle fastening seat, the second abutting block in the fastening cover abutting the first abutting block of the cage type circle fastening seat to gather towards the center, realizing the inside of the first abutting block abutting the outside of each stator block core, at the same time, the fourth cylinder drives the thimble disc to press down and abut the upper end surface of the completed stator core, realizing the stator core realizing circle and abutting tightly up and down;

[0020] S7, the front end of the positioning push block is separated from the groove on the top side of the rotating shaft connector by the fifth cylinder, the cage type circle fastening seat and the fastening cover are rotated to a certain angle by the first servo motor, the gap of the stator block core circle is exposed to the second through hole position, and laser welding is performed on the second through hole position by the laser welding device;

[0021] S8, the servo cylinder drives the fastening cover to move up, the first cylinder of the ejection mechanism drives the connecting rod to drive multiple ejector rods to eject the completed circle welded stator core upwards.

[0022] The beneficial effects of the present application are: the equipment and method for realizing the block type stator core round welding are designed, which mainly realizes that the stator block core does not need to be designed with a resistance driving motor and a screw rod to connect the resistance block for each block core when the block core is assembled and fastened, the structure design is simplified, the cost is reduced, and the difficulty of equipment assembly and debugging is also reduced. The pressing and fastening rotating ejection integrated device is designed, the block core is transferred through the pre-assembled block core transfer device, the pre-assembled block core is quickly placed into the cage type round fastening seat of the pressing and fastening rotating ejection integrated device through the transfer device, then the fastening cover is pressed, each block core is assembled and pressed, the synchronization is high, the stator core is pressed around and up and down, then the laser welding device is used to weld under the condition of pressing around and up and down, so that the yield of the block type stator round welding product is high. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The block type stator round welding equipment of the present application mainly comprises a structure diagram.

[0024] Figure 2 The transfer device structure diagram of the present application.

[0025] Figure 3 The integrated structure diagram of the pressing and fastening rotating ejection integrated device of the present application.

[0026] Figure 4 The cage type round fastening seat and ejection mechanism structure exploded view of the present application.

[0027] Figure 5 The fastening cover structure exploded view of the present application.

[0028] Figure 6 The internal structure diagram of the fastening cover of the present application.

[0029] Figure 7 The laser welding device structure diagram of the present application.

[0030] Label: 1, workbench; 2, transfer device; 3, compression fastening rotary ejection integrated device; 4, laser welding device; 201, first support; 202, placement platform; 2021, placement through hole position; 203, second support; 204, second guide rail; 205, sliding block support; 206, third air cylinder; 207, pushing column; 301, cage type round fastening seat; 3011, hollow cylindrical body; 3012, first through hole position; 3013, second through hole position; 3014, first abutting block; 3015, abutting compression spring; 3016, reset abutting block; 3017, pin shaft; 3018, pressing block; 3019, fastening seat bottom plate; 3020, jacking rod; 3021, jacking rod fixing plate; 3022, first synchronous wheel; 3023, second synchronous wheel; 3024, synchronous belt; 3025, second abutting block; 3026, upper cover plate; 3027, fourth air cylinder; 3028, ejector pin disc; 302, fastening cover body; 30201, third through hole position; 303, hollow support column; 304, hollow T-shaped shaft; 305, T-shaped bearing seat; 306, support plate; 307, sliding block; 308, first guide rail; 309, first servo motor; 310, first air cylinder; 311, guide shaft; 312, oil-free bushing; 313, movable plate; 314, top mounting plate; 315, servo cylinder; 316, movable joint; 317, connecting support; 318, connecting bayonet; 319, fifth air cylinder. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present disclosure.

[0032] Please refer to Figures 1 to 7An embodiment of the block type stator circle welding equipment provided by the technical scheme, which is used for twelve block type stator circle welding, mainly comprises a workbench 1, a transfer device 2 for stator block core transfer arranged on the workbench 1, a pressing and fastening rotary ejection integrated device 3 for stator block core circle fastening, and a laser welding device 4 for welding the stator block core. The pressing and fastening rotary ejection integrated device 3 comprises a cage type circle fastening seat 301, a fastening cover 302 sleeved on the cage type circle fastening seat 301, and a lifting mechanism for driving the fastening cover 302 to press down. The cage type circle fastening seat 301 is provided with a stator block core circle containing cavity and a plurality of first abutting blocks 3014 abutting against the outer side of each block core. The fastening cover 302 is provided with twelve second abutting blocks 3025 for driving the twelve first abutting blocks 3014 to fold towards the center. The bottom of the cage type circle fastening seat 301 is provided with a rotating mechanism and an ejection mechanism for driving the cage type circle fastening seat 301 to rotate. The fastening cover 302 is provided with an up-down driving mechanism for driving the fastening cover 302 to move up and down.

[0033] Please refer to Figure 3 、 Figure 4 The cage type circle fastening seat 301 comprises a hollow cylindrical body 3011 and a fastening seat bottom plate 3019 arranged at the lower end of the hollow cylindrical body 3011. The sidewall of the hollow cylindrical body 3011 is uniformly provided with twelve vertical first through hole positions 3012 and second through hole positions 3013 around the sidewall. The twelve first through hole positions 3012 and the twelve second through hole positions 3013 are arranged alternately. Each first through hole position 3012 is a mounting through hole for mounting a first abutting block 3014. The first abutting block 3014 is provided with a transversely penetrating notch. The notch is provided with an abutting compression spring 3015 at the rear side. The front side of the abutting compression spring 3015 is provided with a reset abutting block 3016. The sidewall of the fastening cover 302 is provided with a third through hole position 30201 opposite to the second through hole position 3013. The twelve first abutting blocks 3014 are arranged radially. The inner side of the twelve first abutting blocks 3014 forms a placing cavity for placing the stator block core. When the stator block core is placed, the fastening cover 302 is pressed down to realize that the second abutting blocks 3025 press against the rear side of the first abutting blocks 3014, so that the first abutting blocks 3014 are pushed into the stator block core to realize that the first abutting blocks 3014 abut against the rear side of the stator block core to realize the circle of the stator core.

[0034] Further, the first abutting block 3014 is provided with a pin shaft 3017 at the middle part of the rear side, the first through hole position 3012 is provided with a second guide groove for the forward and backward movement of the pin shaft 3017, the slot of the first guide groove is provided with a pressing block 3018, and the pressing block 3018 is connected with the hollow cylindrical body 3011 through a screw, so as to realize the assembly of the first abutting block 3014 in the first through hole position 3012.

[0035] Further, the lower end of the fastening seat bottom plate 3019 is provided with a hollow support column 303, the lower end of the hollow support column 303 is connected with a hollow T-shaped shaft, the hollow T-shaped shaft is provided with a T-shaped bearing seat 305, the T-shaped bearing seat 305 is provided with a support plate 306, the T-shaped bearing seat 305 is fixedly connected with the support plate 306, the bottom of the support plate 306 is provided with a hollow position corresponding to the workbench 1, the lower end of the hollow T-shaped shaft is provided with a first synchronous wheel 3022, the side of the support plate 306 or the bottom of the workbench 1 is provided with a first servo motor 309 and a second synchronous wheel 3023, the first synchronous wheel 3022 and the second synchronous wheel 3023 are provided with a synchronous belt 3024, the first servo motor 309 drives the second synchronous wheel 3023 to rotate, drives the first synchronous wheel 3022 to rotate, and drives the cage type circle-punching fastening seat 301 to rotate.

[0036] Please refer to Figure 4 Further, the hollow support column 303 is provided with the ejection mechanism, the ejection mechanism comprises a plurality of ejector rods 3020, an ejector rod fixing plate 3021 connected with the lower ends of the plurality of ejector rods 3020, a connecting rod arranged at the lower end of the ejector rod fixing plate 3021, a first air cylinder 310 arranged at the lower end of the hollow T-shaped shaft 304, a push rod of the first air cylinder 310 connected with the connecting rod, the connecting rod penetrating into the hollow T-shaped shaft 304, the upper end of the connecting rod connected with the ejector rod fixing plate 3021, and the fastening seat bottom plate 3019 provided with a plurality of hole positions through which the plurality of ejector rods 3020 pass, the first air cylinder 310 drives the connecting rod to drive the plurality of ejector rods 3020 to move up and down. The fastening seat bottom plate 3019 is provided with a plurality of through holes through which the plurality of ejector rods 3020 pass, after the circle-punching welding of the stator block iron core, the stator is lifted up by the plurality of ejector rods 3020, so as to facilitate the blanking.

[0037] The compression fastening and rotary ejection integrated device designed in the scheme realizes the circle-punching fastening of the block type stator iron core, drives the rotation to realize the welding of the circle-punching gap, and is an integrated device, the structure design is novel and unique, realizes the coherence of multiple process actions, and is beneficial to improving the production efficiency of products and the yield of circle-punching welding.

[0038] Please refer to Figures 1 to 3, as preferred, the bottom of the support plate 306 is provided with a sliding block on each side, the sliding block is connected with a first guide rail 308, the first guide rail 308 is fixed on both sides of the hollow position on the workbench 1, the side edge of the support plate 306 is provided with a second air cylinder for driving the support plate 306 to move back and forth along the first guide rail 308, the cage type circle assembling and fastening seat 301 is driven to move to the lower side of the transfer device 2 through the second air cylinder. The cage type circle assembling and fastening seat 301 is driven to move through the second air cylinder and the first guide rail 308, so as to receive the pre-assembled circular segment cores placed on the transfer device 2 above, which is beneficial to improve the flatness and consistency of the segment cores loaded into the cage type circle assembling and fastening seat 301, and is beneficial to improve the qualified rate of the tightly assembled circle realized by the cage type circle assembling and fastening seat 301.

[0039] Please refer to Figure 1 、 Figure 2 , the transfer device 2 comprises a first support 201, a placing platform 202 arranged on the upper end of the first support 201, and a second support 203 arranged on the placing platform 202, wherein the second support 203 is provided with a second guide rail 204 vertically downward, a sliding block support 205 and a third air cylinder 206, the lower end of the sliding block support 205 is provided with a pushing column 207, the placing platform 202 is provided with a placing through hole position 2021, a pre-assembled circle jig containing pre-assembled circular stator segment cores is placed through the placing through hole position 2021, the third air cylinder 206 drives the sliding block support 205 to drive the pushing column 207 to push the stator segment cores in the pre-assembled circle jig downward into the cage type circle assembling and fastening seat 301.

[0040] Please refer to Figure 1 、 Figure 3The lifting mechanism includes guide shafts 311 vertically arranged on both sides of the hollowed-out position of the workbench 1, oil-free bushings 312 are sleeved on the guide shafts 311, movable plates 313 are arranged on the oil-free bushings 312, a hole position is arranged at the center of the movable plate 313, a bearing and a rotating shaft connecting piece are arranged in the hole position, a flange connecting part is integrally formed at the lower end of the rotating shaft connecting piece, an upper cover plate 3026 is arranged at the top of the fastening cover body 302, the flange connecting part is connected with the upper cover plate 3026 through a shaft rod, a top pin disc 3028 for pressing the upper end face of the stator segmented core is arranged in the upper cover plate, a fourth air cylinder 3027 for driving the lower pressing of the top pin disc 3028 is arranged on the top surface of the upper cover plate 3026, a top mounting plate 314 is arranged at the top of the guide shaft 311, a servo cylinder 315 is arranged on the top mounting plate 314, a hole position through which a screw rod of the servo cylinder 315 passes is arranged on the top mounting plate 314, a movable joint 316 is connected to the front end of the screw rod of the servo cylinder 315, a connecting bracket 317 is arranged at the position corresponding to the rotating shaft connecting piece on the movable plate 313, a connecting bayonet 318 is arranged on the connecting bracket 317, the movable joint 316 is connected in the connecting bayonet 318, the servo cylinder 315 drives the movable plate 313 to move up and down, and drives the fastening cover body 302 to move up and down. Through the connection of the connecting bayonet 318 and the movable joint 316, the rotating shaft connecting piece connected with the movable plate 313 can rotate with the connected fastening cover body 302, so that the servo cylinder 315 of the lifting mechanism drives the movable plate 313 and the fastening cover body 302 to move up and down, and at the same time, it can be ensured that the fastening cover body 302 can rotate together when the cage type circular fastening seat rotates in the circumferential direction, so as to realize the design that the laser welding device aligns and welds the third through hole position 30201 corresponding to the circular gap.

[0041] Preferably, a pressure sensor is arranged on the connecting bracket 317 corresponding to the connecting bayonet 318 in the connecting bayonet 318, which is used to obtain the pressure value of the servo cylinder driving the movable joint 316 to press down; a groove is arranged on the top side of the rotating shaft connecting piece, a fifth air cylinder 319 is arranged on the movable plate 313, a positioning push block is connected to the push rod of the fifth air cylinder 319, the front end of the positioning push block is pushed into the groove, and is used for locking when the fastening cover body 302 rotates to the original position. Since the fastening cover body 302 needs to be rotated to the initial original position first, the position is the position corresponding to the second abutting block 3025 in the fastening cover body 302 and the first abutting block 3014 of the cage type circular fastening seat 301, so as to realize the pressing abutment. At the same time, the position is also the position corresponding to the third through hole position 30201 and the second through hole position 3013, the third through hole position 30201 and the second through hole position 3013 overlap and communicate, which is the welding window of the laser welding device 4 for welding the stator circular gap.

[0042] The pressure value of the pressing is monitored by the pressure sensor, which is beneficial for realizing digital control. Preferably, a grating ruler is arranged outside the guide shaft 311 to realize control over the lifting movement.

[0043] Preferably, the rear side of the first abutting block 3014 is an inclined surface inclined outward from top to bottom, and the second abutting block 3025 is an inclined surface inclined inward from bottom to top, so as to realize stepwise pressing of the cover 302 downward, and the second abutting block 3025 stepwise abuts the first abutting block 3014 inward to fold and press the stator segment cores.

[0044] For the laser welding device, one group or two groups arranged in a symmetrical position can be arranged. Figure 1 Thus, two circular-segment gaps can be welded simultaneously in one rotation of the cage-type circular-segment fastening seat. The laser welding device adopts existing laser welding technology, and the specific structure is not described herein,

[0045] A stator circular-segment welding method using the stator circular-segment welding device, comprising the following steps:

[0046] S1, placing the pre-circular-segment jig loaded with the stator segment cores pre-assembled into a circular shape on the transfer device 2;

[0047] S2, moving the cage-type circular-segment fastening seat 301 to the lower side of the transfer device 2 by driving the second cylinder;

[0048] S3, driving the sliding block support 205 to push the stator segment cores in the pre-circular-segment jig downward into the cage-type circular-segment fastening seat 301 by the third cylinder 206 of the transfer device 2 and the pushing column 207;

[0049] S4, moving the cage-type circular-segment fastening seat 301 to the lower side of the cover 302 by driving the second cylinder;

[0050] S5, pushing the cover 302 to the groove on the top side of the shaft connecting piece connected to the cover 302 by the positioning pushing block at the front end of the fifth cylinder 319, and completing the cover 302 at the initial origin position;

[0051] S6, driving the movable plate 313 to move downward along the guide shaft 311 by the servo cylinder 315, pushing the cover 302 downward on the cage-type circular-segment fastening seat 301, abutting the first abutting block 3014 of the cage-type circular-segment fastening seat 301 inward by the second abutting block 3025 in the cover 302, realizing abutting of the first abutting block 3014 inward to the outer side of each stator segment core, and driving the thimble disc 3028 to press the upper end surface of the stator core assembled into a circular shape by the fourth cylinder 3027, realizing abutting of the stator core assembled into a circular shape in the whole circumference and up and down;

[0052] S7, the fifth cylinder 319 drives the front end of the positioning push block to be separated from the groove on the top side of the shaft connector, the first servo motor 309 drives the cage type round fastening seat 301 and the fastening cover 302 to rotate to a certain angle, the gap of the stator block core round is exposed to the second through hole 3013, and the laser welding device 4 is aligned with the second through hole 3013 for laser welding;

[0053] S8, the servo cylinder 315 drives the fastening cover 302 to move upwards, and the first cylinder 310 of the ejection mechanism drives the connecting rod to drive a plurality of ejector rods 3020 to eject upwards to complete the round welding of the stator core.

[0054] The above has described the embodiments of the present disclosure, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles, practical application or improvement of the technology in the market of the embodiments, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.

Claims

1. A segmented stator circle welding apparatus, characterized by, The application relates to a stator assembly device, which comprises a workbench, a transfer device arranged on the workbench and used for transferring stator block iron cores, a pressing and fastening rotating and ejecting integrated device used for fastening and rounding the stator block iron cores, and a laser welding device used for welding the stator block iron cores. The pressing and fastening rotating and ejecting integrated device comprises a cage type rounding fastening seat, a fastening cover sleeved on the cage type rounding fastening seat, and a lifting mechanism for driving the fastening cover to press down; the cage type rounding fastening seat is provided with a stator block iron core rounding cavity and a plurality of first abutting blocks abutting against the outer sides of each block iron core; the fastening cover is internally provided with a plurality of second abutting blocks for driving the plurality of first abutting blocks to fold towards the center; the bottom of the cage type rounding fastening seat is provided with a rotating mechanism for driving the cage type rounding fastening seat to rotate and an ejecting mechanism; and the fastening cover is provided with an up-down driving mechanism for driving the fastening cover to move up and down. The cage type rounding fastening seat comprises a hollow cylindrical body, a fastening seat bottom plate arranged at the lower end of the hollow cylindrical body, a plurality of vertical first through hole positions and second through hole positions uniformly arranged along the circumferential wall of the hollow cylindrical body, the first through hole positions and the second through hole positions being arranged alternately, the first through hole positions being mounting through holes for mounting the first abutting blocks, the first abutting blocks being provided with transversely penetrating notches, the notches being internally provided with abutting compression springs, the front sides of the abutting compression springs being provided with reset abutting blocks, the two side hole walls of the first through hole positions being provided with first guide grooves for the front and back movement of the reset abutting blocks, and the circumferential wall of the fastening cover being provided with third through hole positions corresponding to the second through hole positions. The lower end of the fastening seat bottom plate is provided with a hollow support column, the lower end of the hollow support column is connected with a hollow T-shaped shaft, the hollow T-shaped shaft is sleeved with a T-shaped bearing seat, the T-shaped bearing seat is sleeved with a support plate, the T-shaped bearing seat is fixedly connected with the support plate, the bottom of the support plate is provided with a hollow position corresponding to the workbench, the lower end of the hollow T-shaped shaft is provided with a first synchronous wheel, the bottom of the support plate or the workbench is provided with a first servo motor and a second synchronous wheel on the side of the first synchronous wheel, the first synchronous wheel and the second synchronous wheel are provided with a synchronous belt, the first servo motor drives the second synchronous wheel to rotate, drives the first synchronous wheel to rotate, and drives the cage type rounding fastening seat to rotate. The hollow support column is internally provided with the ejecting mechanism, the ejecting mechanism comprises a plurality of ejecting rods, an ejecting rod fixing plate connected with the lower ends of the plurality of ejecting rods, a connecting rod arranged at the lower end of the ejecting rod fixing plate, and a first air cylinder arranged at the lower end of the hollow T-shaped shaft, the push rod of the first air cylinder is connected with the connecting rod, the connecting rod penetrates the hollow T-shaped shaft, the upper end of the connecting rod is connected with the ejecting rod fixing plate, the fastening seat bottom plate is provided with hole positions for the plurality of ejecting rods to penetrate, and the first air cylinder drives the connecting rod to move the plurality of ejecting rods up and down.

2. The segmented stator round build welding apparatus of claim 1, wherein, The middle part of the first abutting block close to the rear side is transversely provided with a pin shaft, the first through hole position is provided with a second guide groove for the front and back movement of the pin shaft, the notch of the first guide groove is provided with a pressing block, and the pressing block and the hollow cylindrical body are connected through screws to realize the assembly of the first abutting block in the first through hole position.

3. The segmented stator round build welding apparatus of claim 1, wherein, The bottom of the support plate is provided with a sliding block on each side, the sliding block is connected with a first guide rail, the first guide rail is fixed on both sides of the hollow position on the workbench, the side edge of the support plate is provided with a second air cylinder for driving the support plate to move forward and backward along the first guide rail, and the cage type circle assembling fastening seat is driven by the second air cylinder to move below the transfer device.

4. The segmented stator round build welding apparatus of claim 3, wherein, The transfer device comprises a first support, a placing platform arranged at the upper end of the first support, and a second support arranged on the placing platform, wherein a second guide rail vertically downward is arranged on the second support, a sliding block support and a third air cylinder are arranged on the second support, a pushing column is arranged at the lower end of the sliding block support, a placing through hole is arranged on the placing platform, a pre-assembled circle jig containing a pre-assembled circular stator segment core is placed in the placing through hole, and the third air cylinder drives the sliding block support to drive the pushing column to push the stator segment core in the pre-assembled circle jig downward into the cage type circle assembling fastening seat.

5. The segmented stator round build welding apparatus of claim 4, wherein, The lifting mechanism comprises guide shafts vertically arranged on both sides of the hollow position of the workbench respectively, an oil-free bushing is sleeved on the guide shaft, a movable plate is arranged on the oil-free bushing, a hole is arranged at the center of the movable plate, a bearing and a rotating shaft connecting piece are arranged in the hole, an integrally formed flange connecting part is arranged at the lower end of the rotating shaft connecting piece, an upper cover plate is arranged at the top of the fastening cover body, the flange connecting part is connected with the upper cover plate through a shaft rod, a needle disc for pressing the upper end surface of the stator segment core is arranged in the upper cover plate, a fourth air cylinder for driving the needle disc to press downward is arranged on the top surface of the upper cover plate, a top mounting plate is arranged at the top of the guide shaft, a servo cylinder is arranged on the top mounting plate, a hole through which a screw rod of the servo cylinder passes is arranged on the top mounting plate, a movable joint is connected to the front end of the screw rod of the servo cylinder, a connecting support is arranged at a position corresponding to the rotating shaft connecting piece on the movable plate, the connecting support is provided with a connecting socket, the movable joint is connected in the connecting socket, the servo cylinder drives the movable plate to move up and down, and drives the fastening cover body to move up and down.

6. The segmented stator round build welding apparatus of claim 5, wherein, A pressure sensor is arranged on the connecting support corresponding to the connecting socket in the connecting socket, which is used to obtain the pressure value of the movable joint driven by the servo cylinder to press downward; a groove is arranged at the top side of the rotating shaft connecting piece, a fifth air cylinder is arranged on the movable plate, a positioning push block is connected to the push rod of the fifth air cylinder, and the front end of the positioning push block is pushed into the groove, which is used to lock the fastening cover body when the fastening cover body rotates to the original position.

7. A method for the circular welding of the segmented stator of any one of claims 1 to 6, characterized in that, The method comprises the following steps: S1, placing a pre-assembled circle jig containing a pre-assembled circular stator segment core in the transfer device; S2, driving the cage type circle assembling fastening seat to move below the transfer device by the second air cylinder; S3, driving the sliding block support to drive the pushing column to push the stator segment core in the pre-assembled circle jig downward into the cage type circle assembling fastening seat by the third air cylinder of the transfer device; S4, driving the cage type circle assembling fastening seat to move below the fastening cover body by the second air cylinder; S5, the front end of the positioning push block of the fastening cover body is pushed into the groove at the top side of the rotating shaft connecting piece connected with the fastening cover body, and the fastening cover body is completed at the initial original position. S6, the servo cylinder drives the movable plate to move down along the guide shaft, drives the fastening cover to press down on the cage type circle fastening seat, the second abutting block in the fastening cover abuts and presses the first abutting block of the cage type circle fastening seat to gather to the center, realizes the inside abutting of the first abutting block to each stator sub-core outside, at the same time, the fourth cylinder drives the needle disc to press down on the upper end surface of the completed stator core, realizes the stator core to realize the circle of the whole body and the resistance of up and down; S7, the fifth cylinder drives the front end of the positioning push block to separate from the groove on the top side of the rotating shaft connector, rotates the cage type circle fastening seat and the fastening cover to a certain angle through the first servo motor, the gap of the stator sub-core circle is exposed to the second through hole, and laser welding device is aligned to the second through hole for laser welding; S8, the servo cylinder drives the fastening cover to move up, the first cylinder of the ejection mechanism drives the connecting rod to drive multiple ejector rods to eject upward to complete the circle welding of the stator core.

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