CN114799713B

CN114799713B - Stator core welding machine

Info

Publication number: CN114799713B
Application number: CN202210509339.9A
Authority: CN
Inventors: 彭学舟; 王奇丰; 陈兆春
Original assignee: Zhejiang Innovation Laser Equipment Co ltd
Current assignee: Zhejiang Innovation Laser Equipment Co ltd
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2023-07-28
Anticipated expiration: 2042-05-11
Also published as: CN114799713A

Abstract

The application relates to a stator core welding machine, including the frame and set up fixing device in the frame, conveyor, initial positioner, welding set and welding positioner, be equipped with the pan feeding mouth in the frame, fixing device is used for fixed stator work piece, conveyor is used for sending into the welding station with fixing device who is fixed with stator work piece from the pan feeding mouth, initial positioner is used for driving stator work piece rotation on the welding station and makes welding set aim at first welding seam, welding positioner is used for driving stator work piece rotation after welding a welding seam and makes welding set aim at next welding seam, welding set is used for welding stator work piece. The stator core welding device can smoothly weld adjacent stator cores on the stator cores, improves the structural strength of the stator cores, and is reasonable in welding material, positioning, welding, discharging procedures and processes and good in welding effect.

Description

Stator core welding machine

Technical Field

The application relates to the field of laser welding technology, in particular to a stator core welding machine.

Background

The motor implements electric energy or an electromagnetic device according to law. Generally consists of a stator, a rotor, a base and an end cover.

The structure of the motor stator in the related art comprises an annular retainer, wherein windings distributed along the circumferential direction of the retainer are arranged on the inner side of the retainer, iron core slots penetrating through the retainer along the axial direction of the retainer are formed in the end face of the retainer, the iron core slots are uniformly distributed along the axial direction of the retainer, and stator iron core sheets are inserted into the iron core slots.

If the adjacent stator core sheets are fixed by being inserted into the core slots, the structural strength of the adjacent stator core sheets is unstable, and at the moment, the integral structural strength can be enhanced by welding and fixing the adjacent stator core sheets. Further, it is necessary to design an apparatus capable of welding the stator core sheets.

Disclosure of Invention

In order to weld a stator core to enhance structural strength of the stator core, the present application provides a stator core welding machine.

The application provides a stator core welding machine adopts following technical scheme:

the utility model provides a stator core welding machine, including the frame and set up fixing device in the frame, conveyor, initial positioning device, welding set and welding positioning device, be equipped with the pan feeding mouth in the frame, fixing device is used for fixed stator work piece, conveyor is used for sending into the welding station with fixing device who is fixed with stator work piece from the pan feeding mouth, initial positioning device is used for driving the stator work piece rotation on the welding station and makes welding set aim at first welding seam, welding positioning device is used for driving stator work piece rotation after welding a welding seam and makes welding set aim at next welding seam, welding set is used for welding stator work piece.

Through adopting above-mentioned technical scheme, when using, firstly fix stator core on fixing device, then carry to welding station through conveyor from the pan feeding mouth, then adjust work piece turned angle through initial positioner, thereby the position of location stator work piece, make first welded position aim at welding set, then utilize welding set to weld first welded position, then welding positioner drives work piece rotation certain angle and makes second welded position rotate to aim at welding set's state, then utilize welding set to weld second welded position, so circulation, after the last welded position accomplishes the welding, conveyor drives the work piece ejection of compact, thereby can weld adjacent stator core on the stator core smoothly, promote stator core structural strength, and the welding pan feeding, the location, welding, ejection of compact process and process are more reasonable, the welding effect is good.

Optionally, fixing device includes the pressure head, pushes down the subassembly and pushes down the actuating assembly, push down the actuating assembly including pushing down the guide post, pushing down the slide, pushing down the lead screw, pushing down the motor, push down at least two and vertical setting in the frame of guide post, push down the slide and set up on pushing down the guide post, the push down the motor setting in the frame and be used for driving to push down the lead screw rotation with pushing down the lead screw connection, push down the subassembly set up in push down on the slide and be used for pushing down stator work piece top, the pressure head sets up on conveyor, the constant head tank that supplies stator work piece to put into has been seted up on the top of pressure head.

Through adopting above-mentioned technical scheme, stator work piece is put in the constant head tank, then pushes down the lead screw rotation under the motor drive to drive pushing down the slide and move down, make the upper end of pushing down the subassembly and pressing at stator work piece, thereby compress tightly stator work piece on pressing the head, stator work piece is fixed smooth reasonable, and is fixed effectual.

Optionally, the pressing assembly comprises a pressing seat, a coaxial pressing sleeve, a pressing cover and a pressing sleeve, wherein the pressing sleeve is used for being sleeved outside the top end of the stator workpiece and propped against the top end of the silicon steel sheet of the stator workpiece, the pressing cover is sleeved on the top end of the pressing sleeve and is propped against the pressing sleeve downwards, the pressing sleeve is sleeved outside the pressing flat cover and downwards abuts against the pressing flat cover, the pressing sleeve is connected with the pressing seat in a horizontal plane in a rotating mode, and the pressing seat is arranged on the pressing guide post in a sliding mode and is connected with the pressing screw rod in a threaded mode.

By adopting the technical scheme, when the stator workpiece is fixed, the stator workpiece is firstly placed in the positioning groove, and then the pressing driving assembly is pressed down to drive the pressing seat to move downwards, so that the pressing cover and the pressing sleeve are pressed at the top end of the stator workpiece, wherein the pressing sleeve is pressed at the top end of the silicon steel sheet and the pressing cover presses the pressing sleeve on one hand, and the shaft center part of the pressing cover presses the inside of the top end of the stator workpiece on the other hand, so that the stator workpiece is well pressed; the stator workpiece can rotate along with the rotating table during welding by rotating the pressing sleeve and the pressing base in the horizontal plane.

Optionally, the fixing device comprises a die sleeve, and the side wall of the die sleeve is provided with a plurality of communication grooves which are distributed along the circumferential direction of the die sleeve and extend axially, wherein the communication grooves are used for the welding device to extend into for welding; the die sleeve is located between the pressure receiving head and the pressing component, the bottom end of the die sleeve is inserted into the positioning groove, a supporting ring used for supporting the bottom end of the stator workpiece is arranged on the inner side wall of the die sleeve in a protruding mode, a first groove and a second groove which extend along the axial direction of the die sleeve and penetrate through the side wall of the die sleeve along the radial direction of the die sleeve are formed in the side wall of the die sleeve, the first groove penetrates through the bottom end of the die sleeve downwards, and the second groove penetrates through the top end of the die sleeve upwards.

By adopting the technical scheme, the communicating groove is used for enabling the welding device to be in contact with the welding position, so that the welding is smooth, the first groove and the second groove are used for increasing the applicability of the die sleeve, when the size of the stator workpiece is slightly deviated from that of the die sleeve, the stator workpiece and the die sleeve can be well matched and installed, and the die sleeve material can be made of a metal material with certain elasticity, so that the installation process of the die sleeve and the stator workpiece is smoother, and the combination stability of the die sleeve and the stator workpiece can be ensured; the die sleeve is sleeved outside the stator workpiece, then the die sleeve is placed in the positioning groove, and the stator workpiece is fixed by fixing the die sleeve; on one hand, different stator workpieces can be adapted through the dimensional parameters of the cover surface die sleeve, the sizes and the dimensions of other parts of the fixing device are not required to be changed, and the applicability is better; on the other hand, the fixed mounting process of the stator workpiece is facilitated, an operator firstly installs the die sleeve and the stator workpiece outside the discharge hole, then the die sleeve is placed into the positioning groove, and then the fixing is completed, so that the operation is more convenient and safer.

Optionally, the intercommunication groove includes bar section and sets up in the semicircular end at bar section both ends, the support ring upper surface is located the semicircular end altitude range of intercommunication groove bottom, semicircular end is radially run through along the die sleeve the support ring.

By adopting the technical scheme, the upper surface of the support ring is positioned in the height range of the semicircular end at the bottom end of the communication groove, and after the semicircular end radially penetrates through the support ring along the die sleeve, a recess is formed on the support ring, and when a stator workpiece is placed on the support ring, scraps and the like formed by welding can be discharged through the recess; in addition, the communication groove penetrates through the support ring, so that the processing of the communication groove is facilitated.

Optionally, be provided with ejecting device in the frame, ejecting device includes kicking block and ejecting driving piece, ejecting driving piece sets up in the frame and is connected with the kicking block and is used for driving the kicking block and rises, the kicking block is located the pressure head below, the through groove that supplies the kicking block upwards to support tight die sleeve bottom is seted up to the pressure head end face.

Through adopting above-mentioned technical scheme, drive the kicking block through ejecting driving piece and rise, push up the bottom of die sleeve through penetrating groove to it is ejecting together from the constant head tank with die sleeve and stator work piece, make things convenient for the unloading.

Optionally, conveyor includes carries the platform, carries drive assembly, fixing device sets up in carrying the bench, carry the platform to slide along the pan feeding mouth and set up in the frame to welding station direction, carry drive assembly to set up in the frame and be connected with carrying the platform and be used for driving and carry the platform to remove to welding station from the pan feeding mouth.

Through adopting above-mentioned technical scheme, carry drive assembly to drive and carry the platform and follow the pan feeding mouth and remove to welding station direction to carry the stator work piece on the fixing device to welding station on, simple structure carries effectually.

Optionally, the welding positioning device includes a rotating motor and a rotating table, the rotating table is horizontally and rotatably arranged on the conveying table, the pressure-receiving head is arranged on the conveying table, and the rotating motor is arranged on the conveying table and is coaxially connected with the rotating table to drive the rotating table to rotate; the initial positioning device comprises a visual component and a rotation controller, wherein the visual component is electrically connected with the rotation controller and is used for shooting a die sleeve and transmitting formed images to the rotation controller, the rotation controller is electrically connected with a rotation motor, receives and analyzes electric signals of the visual component, and then controls the rotation motor to work so that welding seams are aligned with the welding device.

Through adopting above-mentioned technical scheme, during the use, judge the welding position of the stator work piece of carrying to the welding station through visual component, then rotate the controller control and rotate the motor and rotate the stator work piece that drives on rotating table and the rotating table and rotate together for the welding set is aimed at to the position that will weld.

Optionally, the initial positioning device further comprises a position sensor, a sensing piece and a homing controller, the sensing piece is arranged on the rotating table, the position sensor is arranged on the conveying table and is electrically connected with the homing controller, the initial positioning device is used for sending an electric signal to the homing controller when sensing the sensing piece, and the homing controller is electrically connected with the rotating motor and is used for controlling the rotating motor to stop after receiving the electric signal of the position sensor.

Through adopting above-mentioned technical scheme, through the position of position sensor response induction piece, when the induction piece in the position of being responded to, the explanation rotating table is in the position of predetermineeing for when vision subassembly, rotation controller are to stator work piece initial positioning, at least there is a welding gap to be located the shooting scope of vision subassembly, avoid vision subassembly to shoot welding gap position and can't give rotation controller need control rotating table pivoted turned angle.

Optionally, the vision subassembly includes area array camera, focusing lens and light filling lamp, area array camera, light filling lamp all set up in the frame, the light filling lamp is located between area array camera and the die sleeve, the focusing lens is located between area array camera and the light filling lamp and installs on the area array camera.

Through adopting above-mentioned technical scheme, the light filling lamp carries out the light filling to the area array camera for the shooting effect of area array camera is better, and the focusing lens is also used for guaranteeing the shooting effect of area array camera, and is rational in infrastructure, shoots effectually.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the stator workpiece is fixed on the fixing device, then is sent to the welding station by the conveying device, then the angle of the stator workpiece is positioned by the initial positioning device, finally, the welding device is used for welding, each position is welded, the welding positioning device drives the stator workpiece to rotate by one angle, and then the second position is welded until all the positions are welded, and the welding process is simple and reasonable;

2. the die sleeve is designed, so that the installation process of the electronic workpiece and the fixing device is more convenient, the installation effect is good, and the blanking process of the stator workpiece is also facilitated;

3. the ejector driving piece drives the ejector block to rise, and the bottom end of the die sleeve is propped against the through groove, so that the die sleeve and the stator workpiece are ejected out of the positioning groove together, and blanking is facilitated.

Drawings

Fig. 1 is a schematic structural view of a stator core welding machine according to an embodiment of the present application.

Fig. 2 is a schematic structural view of a stator core welding machine according to an embodiment of the present application, for illustrating the structure and installation position of a welding device.

Fig. 3 is a schematic structural view of an ejector device of a stator core welding machine according to an embodiment of the present application.

Fig. 4 is an exploded view showing a fixing device of a stator core welding machine according to an embodiment of the present application.

Fig. 5 is a schematic structural view of a die sleeve of a stator core welding machine according to an embodiment of the present application.

Fig. 6 is a schematic structural view of a die sleeve of a stator core welding machine according to an embodiment of the present application, for illustrating the structure and position of a support ring.

Fig. 7 shows the structure and mounting relationship of a welding device, a horizontal adjusting device and a lifting adjusting device of a stator core welding machine according to an embodiment of the present application.

Reference numerals illustrate: 1. a frame; 11. a feed inlet; 12. a welding station; 13. conveying a sliding rail; 2. an ejector device; 21. a top block; 22. ejecting the driving piece; 3. a fixing device; 31. a pressure head; 311. a through groove; 32. pressing down the assembly; 321. pressing down a seat; 322. pressing the sleeve; 323. flattening the cover; 324. flattening the sleeve; 325. a first tightening slope; 33. pressing down the driving assembly; 331. pressing down the guide post; 332. pressing down the sliding plate; 333. pressing down a lead screw; 334. pressing down the motor; 335. a mounting plate; 34. a die sleeve; 341. a support ring; 342. a limiting block; 343. a communication groove; 344. a first groove; 345. a second groove; 346. a strip section; 347. a semicircular end; 348. a second tightening slope; 35. a fixing seat; 38. a reference axis; 39. a positioning groove; 4. a conveying device; 41. a conveying table; 42. a transport drive assembly; 421. conveying a screw rod; 422. a synchronizing wheel; 5. an initial positioning device; 51. a position sensor; 52. an induction piece; 53. a vision component; 531. an area array camera; 532. a focusing lens; 533. a light supplementing lamp; 6. a welding device; 61. a laser generator; 62. a welding gun; 7. welding and positioning device; 71. a rotating motor; 72. a rotating table; 8. a level adjustment device; 81. a lateral adjustment assembly; 82. a longitudinal adjustment assembly; 9. and a lifting adjusting device.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-7.

The embodiment of the application discloses a stator core welding machine. Referring to fig. 1 and 2, the device comprises a frame 1, and an ejector 2, a fixing device 3, a conveying device 4, an initial positioning device 5, a welding device 6 and a welding positioning device 7 which are arranged on the frame 1.

Two feed inlets and two welding stations are arranged on the frame 1. The conveying device 4 and the fixing device 3 are arranged in two and are in one-to-one correspondence with the feeding holes.

The fixing device 3 and the initial positioning device 5 are both arranged on the conveying device 4, the fixing device 3 is used for conveying the fixing device 3 with the stator workpiece mounted at the feed inlet to the welding station, then the initial positioning device 5 is used for driving the fixing device 3 to rotate so as to adjust the angle position of the stator workpiece, the welding positioning device 7 detects the welding seam on the stator workpiece and adjusts the stator workpiece to rotate to a first welding position, the welding device 6 welds the welding position, after one welding position is welded, the welding positioning device 7 drives the stator workpiece to rotate by one welding included angle, and then the welding device 6 continues to weld newly.

The conveying device 4 comprises a conveying table 41 and a conveying driving assembly 42, the rack 1 is provided with a conveying sliding rail 13 which is horizontal and extends to the direction of the welding device 6 along the feeding hole, the conveying table 41 is slidably arranged in the conveying sliding rail 13, and the conveying driving assembly 42 comprises a conveying screw 421, a synchronous belt, two synchronous wheels 422 and a conveying motor.

The conveying motor is arranged on the frame 1 and is connected with one of the synchronizing wheels 422, the conveying screw 421 is parallel to the conveying slide rail 13, the conveying screw 421 is rotatably arranged on one side of the conveying slide rail 13 with the frame 1, and the other synchronizing wheel 422 is fixedly connected with one end of the conveying screw 421, which is close to the feed inlet. The synchronous belt is connected with two synchronous wheels 422, and when the conveying motor works, the conveying motor drives the conveying screw 421 to rotate through the synchronous wheels 422 and the synchronous belt, so that the conveying table 41 is driven to slide in the conveying sliding rail 13.

As shown in fig. 1, the fixture 3 includes a pressure head 31, a pressing member 32, a pressing driving member 33, and a die sleeve 34.

As shown in fig. 3, the welding positioning device 7 includes a rotating motor 71 and a rotating table 72.

The conveying table 41 is fixedly provided with a disc-shaped fixed seat 35 through bolts, the rotating table 72 is coaxially and rotatably arranged on the fixed seat 35, the rotating motor 71 is arranged below the frame 1 and is connected with the frame 1, an output shaft of the rotating motor 71 is vertically upwards arranged and is coaxial with the fixed seat 35, and an output shaft of the rotating motor 71 penetrates through the fixed seat 35 and is coaxially connected with the rotating table 72, so that the rotating table 72 can be driven to rotate.

As shown in fig. 3 and 4, a reference shaft 38 is fixed to the top end of the rotating table 72, the pressure receiving head 31 is fixed to the top end of the reference shaft 38, and a positioning groove 39 is formed in the top end of the pressure receiving head 31.

As shown in fig. 1 and 2, the pressing assembly 32 is connected to the frame 1 by a pressing drive assembly 33, and the pressing assembly 32 is located directly above the pressure head 31 when the conveying table 41 conveys the stator work to the welding station.

As shown in fig. 1, the push-down driving assembly 33 includes a push-down guide post 331, a push-down slide plate 332, a push-down screw 333, and a push-down motor 334. The four pushing guide posts 331 are rectangular and distributed around the welding station 12, and the pushing slide plate 332 is horizontally arranged and simultaneously connected to the four pushing guide posts 331 in a sliding manner, so that the pushing guide posts 331 can slide up and down. The top of pushing down guide post 331 is fixed with mounting panel 335, pushes down lead screw 333 rotation and connects on mounting panel 335, and pass down slide 332 downwards, pushes down lead screw 333 and slide 332 threaded connection pushes down, pushes down motor 334 install on mounting panel 335 and lie in one side of pushing down lead screw 333 top, pushes down motor 334 vertical setting and output shaft and pushes down lead screw 333 and be connected with drive down lead screw 333 through synchronizing wheel 422 and hold-in range and rotate, when pushing down lead screw 333 rotates, push down slide 332 upwards or downwardly move.

As shown in fig. 3 and 4, the pressing assembly 32 includes a pressing seat 321, a pressing sleeve 322 coaxial with the pressing seat 321, a pressing cover 323, and a pressing sleeve 324, the pressing seat 321 is fixed on the pressing slide 332, the bottom end of the pressing sleeve extends out of the bottom surface of the pressing slide 332, the pressing sleeve 322 is in a cylinder shape, an opening at the bottom end of the pressing sleeve 322 is arranged, and the top end of the pressing sleeve 322 is fixedly connected with the pressing seat 321 through a bolt.

The horizontal cross section of the flattening sleeve 324 is circular, the top end of the flattening sleeve 324 stretches into the opening of the pressing sleeve 322 and abuts against the inner top surface of the opening of the pressing sleeve 322, the inner diameter of the flattening sleeve 324 is larger than the distance from the inner side wall of the silicon steel sheet to the axis of the stator workpiece and smaller than the distance from the outer side wall of the silicon steel sheet to the axis of the stator workpiece, and the bottom end of the flattening sleeve 324 is lower than the bottom surface of the pressing sleeve 322 and is used for abutting against the top end of the silicon steel sheet of the stator workpiece.

The shape of the flattening cover 323 is annular, the flattening cover 323 is sleeved outside the flattening sleeve 324, the top end of the flattening cover 323 is abutted against the bottom end of the flattening sleeve 322, the bottom end of the flattening cover 323 is lower than the bottom end of the flattening sleeve 324, and an annular first abutting inclined plane 325 is arranged between the bottom surface of the flattening cover 323 and the inner side wall of the flattening cover 323.

As shown in fig. 4 and 5, the die sleeve 34 is sleeved on the stator workpiece, and a plurality of communication grooves 343 which are distributed along the circumferential direction of the die sleeve 34 and extend axially are formed on the side wall of the die sleeve 34, and the communication grooves 343 are used for the welding device 6 to extend into for welding; the bottom end of the die sleeve 34 is inserted into the positioning groove 39 and supported on the bottom of the positioning groove 39, and a supporting ring 341 for supporting the bottom end of the stator workpiece is integrally protruded from the inner side wall of the die sleeve 34.

As shown in fig. 5 and 6, the communication grooves 343 are nine in total, and the first communication groove 343, the second communication groove 343, the third communication groove 343, the fourth communication groove 343, the fifth communication groove 343, the sixth communication groove 343, the seventh communication groove 343, the eighth communication groove 343, and the ninth communication groove 343 are sequentially provided in the clockwise direction. A first groove 344 is formed between the first communication groove 343 and the second communication groove 343, between the fourth communication groove 343 and the fifth communication groove 343, between the seventh communication groove 343 and the eighth communication groove 343, between the ninth communication groove 343 and the first communication groove 343, a second groove 345 is formed between the second communication groove 343 and the third communication groove 343, between the fifth communication groove 343 and the sixth communication groove 343, between the eighth communication groove 343 and the ninth communication groove 343, the first groove 344 downwards penetrates through the bottom end of the die sleeve 34, and the second groove 345 upwards penetrates through the top end of the die sleeve 34; a first recess 344 located between the ninth and first recesses extends upwardly through the top end of the die sleeve 34.

The communication groove 343 includes a bar-shaped section 346 and semicircular ends 347 disposed at both ends of the bar-shaped section 346, and the upper surface of the supporting ring 341 is located within a height range of the semicircular ends 347 at the bottom end of the communication groove 343, and the semicircular ends 347 radially penetrate the supporting ring 341 along the die sleeve 34.

A second abutting inclined surface 348 is arranged between the upper surface and the side wall of the die sleeve 34, and the second abutting inclined surface 348 abuts against the first abutting inclined surface 325, so that the die sleeve 34 is abutted against the pressure head 31 through the flat cover 323.

As shown in fig. 3, the ejector device 2 includes an ejector block 21 and an ejector driving member 22, where the ejector driving member 22 is disposed on the frame 1 and connected to the ejector block 21 to drive the ejector block 21 to rise, the ejector block 21 is located below the pressure receiving head 31, and a through slot 311 is formed in the end surface of the pressure receiving head 31 to allow the ejector block 21 to abut against the bottom end of the die sleeve 34.

A limiting block 342 is integrally arranged on the outer wall of the die sleeve 34, the limiting block 342 is located at a position, close to the bottom end of the die sleeve 34, of the outer wall of the die sleeve 34, and the limiting block 342 is located in a position of the through groove 311 and used for limiting the limiting block 342 through the through groove 311 during installation so as to position the installation angle of the die sleeve 34.

As shown in fig. 3 and 4, a rotation motor 71 is provided on the conveying table 41 below the conveying table 41, the rotation motor 71 is provided vertically upward, and an output shaft of the rotation motor 71 penetrates the conveying table 41 upward and is coaxially connected with the rotation table 72. During welding, the rotating motor 71 rotates at intervals, and rotates by a corresponding angle after each welding so that the next welding position of the stator workpiece is aligned with the welding device 6, and the next welding operation is performed.

As shown in fig. 2 and 7, the welding device 6 includes a laser generator 61 and a welding gun 62 mounted on the laser generator 61, and the welding device 6 passes through the level adjustment device 8 and the elevation adjustment device 9.

The horizontal adjusting device 8 comprises a horizontal adjusting assembly 81 and a longitudinal adjusting assembly 82, wherein the horizontal adjusting assembly 81 comprises a horizontal sliding rail, a horizontal sliding seat, a horizontal driving screw rod and a horizontal driving motor.

The transverse slide rail is horizontally arranged on the frame 1, the transverse slide rail is arranged along the connecting line direction of the two welding stations 12, the transverse slide carriage is slidingly connected to the transverse slide rail, the transverse driving screw rod is parallel to the transverse slide rail and is rotatably arranged with the frame 1, the transverse driving motor is arranged on the frame 1 and is positioned at one end of the transverse slide rail, and the output shaft of the transverse driving motor is coaxially connected with one end of the transverse driving screw rod. When the transverse driving motor works, the transverse driving screw rod is driven to rotate, so that the transverse sliding seat is driven to slide between the two welding stations 12 along the transverse sliding rail.

The longitudinal adjustment assembly 82 includes a longitudinal slide rail, a longitudinal slide, a longitudinal drive lead screw, and a longitudinal drive motor.

The longitudinal slide rail is fixed on the transverse slide, the longitudinal slide rail is arranged in parallel with the conveying slide rail 13, the longitudinal driving screw rod is parallel to the longitudinal slide rail and rotatably mounted on the transverse slide, the longitudinal slide rail is slidingly connected on the longitudinal slide rail and in threaded connection with the longitudinal driving screw rod, and the longitudinal driving motor is mounted on the transverse slide seat and in coaxial connection with the longitudinal driving screw rod so as to drive the longitudinal driving screw rod to rotate.

The lifting adjusting device 9 comprises a lifting sliding rail, a lifting sliding seat, a lifting driving screw and a lifting driving motor.

The laser generator 61 is installed on the lift slide, and the lift slide is fixed on vertical slide, and the lift slide slides along vertical direction and installs on the lift slide, and lift drive lead screw is vertical to be set up on the lift slide and rotate with the lift slide and be connected, and lift drive motor installs the top and the vertical downward installation at the lift slide, lift drive motor's output shaft and lift drive lead screw coaxial coupling drive, thereby drive the lift slide and reciprocate through driving lift drive lead screw rotation.

The initial positioning device 5 includes a position sensor 51, a sensing piece 52, and a homing controller, a vision assembly 53, and a rotation controller.

The sensing piece 52 is mounted on the rotating table 72, the position sensor 51 is disposed on the conveying table 41 and electrically connected with the homing controller, the position sensor 51 has a sensing opening for the sensing piece 52 to enter when the rotating table 72 rotates, and the bottom end of the sensing piece 52 extends downwards so that the bottom end of the sensing piece 52 can enter the sensing opening when the rotating table 72 rotates. When the position sensor 51 senses the sensing piece 52, the position sensor 51 sends an electrical signal to the homing controller.

The homing controller is electrically connected to the rotary motor 71 and is for controlling the rotary motor 71 to stop after receiving the electric signal of the position sensor 51.

The vision module 53 includes an area camera 531, a focusing lens 532 and a light supplementing lamp 533, the area camera 531, the focusing lens 532 and the light supplementing lamp 533 are mounted on the lifting slide seat, the area camera 531 is aligned to the direction of the die sleeve 34, so that the die sleeve 34 is photographed, the difference between the communication slot 343 and the target position is judged through the processor after the photographed picture is analyzed, and then the rotating motor 71 is controlled to rotate to drive the die sleeve 34 to rotate so that the first welding position is aligned to the welding gun 62.

The implementation principle of the stator core welding machine in the embodiment of the application is as follows: two stations are fed in turn and welded, when one fixing device 3 is located at the feed inlet, the other fixing device is located at the welding station 12 and used for welding, during the machining process of the welding station 12, the feed inlet is used for installing a stator workpiece, and machining efficiency is high.

When stator workpieces are installed, the bottom end of one stator workpiece is placed into a die sleeve 34, the welding position of the one stator workpiece is aligned with one communication groove 343 of the die sleeve 34, then the die sleeve 34 and stator workpiece combination is placed into a pressure receiving head 31, then a flattening cover 323 covers the top end of the die sleeve 34, then the flattening cover 324 is placed into the axle center of the flattening cover 323, then a conveying device 4 is started to convey a conveying table 41 to the position below a pressing assembly 32, and then a pressing driving assembly 33 works so that the height of the pressing assembly 32 is lowered, and accordingly the flattening cover 324 and the flattening cover 323 above the die sleeve 34 are pressed on the top ends of the die sleeve 34 and the stator workpieces.

Then, the rotating motor 71 drives the rotating table 72 to rotate, so that the sensing piece 52 enters the sensing port position, and initial positioning is completed.

Then the vision module 53 photographs and analyzes the positions of the welding gun 62 and the communication groove 343 closest to the welding gun 62, and then controls the rotation of the rotation table 72 again according to the difference value such that the closest welding gun 62 is aligned with the communication groove 343, and then performs welding, once every time the welding, the rotation table 72 rotates by a preset angle such that the next communication groove 343 is rotated to the welding position until all welding work of one workpiece is completed.

During the work welding process of one welding station 12, the conveying table 41 of the other welding station 12 is positioned at the loading position, and the die sleeve 34, the stator work piece and the like are mounted, so that the processing efficiency is improved.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. A stator core welding machine, characterized in that: the welding device comprises a frame (1), a fixing device (3), a conveying device (4), an initial positioning device (5), a welding device (6) and a welding positioning device (7), wherein the fixing device (3), the conveying device (4), the initial positioning device (5), the welding device (6) and the welding positioning device (7) are arranged on the frame (1), a feeding port is formed in the frame (1), the fixing device (3) is used for fixing a stator workpiece, the conveying device (4) is used for conveying the fixing device (3) fixed with the stator workpiece from the feeding port to a welding station, the initial positioning device (5) is used for driving the stator workpiece on the welding station (12) to rotate so that the welding device (6) is aligned with a first welding seam, the welding positioning device (7) is used for driving the stator workpiece to rotate after one welding seam is welded so that the welding device (6) is aligned with a next welding seam, and the welding device (6) is used for welding the stator workpiece; the fixing device (3) comprises a pressure head (31), a pressing component (32) and a pressing driving component (33), the pressing driving component (33) comprises pressing guide posts (331), pressing sliding plates (332), pressing lead screws (333) and pressing motors (334), at least two pressing guide posts (331) are vertically arranged on the frame (1), the pressing sliding plates (332) are slidably arranged on the pressing guide posts (331), the pressing motors (334) are arranged on the frame (1) and are connected with the pressing lead screws (333) to drive the pressing lead screws (333) to rotate, the pressing component (32) is arranged on the pressing sliding plates (332) and is used for pressing the top ends of stator workpieces downwards, the pressing head (31) is arranged on the conveying device (4), and positioning grooves (39) for placing the stator workpieces are formed in the top ends of the pressing head (31); the pressing assembly (32) comprises a pressing seat (321) and a coaxial pressing sleeve (322), a pressing cover (323) and a pressing sleeve (324), wherein the pressing sleeve (324) is used for being sleeved outside the top end of a stator workpiece and propped against the top end of a silicon steel sheet of the stator workpiece, the pressing cover (323) is sleeved outside the pressing sleeve (324) and propped against the pressing sleeve (324) downwards, the pressing sleeve (322) is sleeved outside the pressing cover (323) and propped against the pressing cover (323) downwards, the pressing sleeve (322) is rotationally connected with the pressing seat (321) in a horizontal plane, and the pressing seat (321) is glidingly arranged on a pressing guide post (331) and is in threaded connection with a pressing screw (333); the fixing device (3) comprises a die sleeve (34), a plurality of communication grooves (343) which are distributed along the circumferential direction of the die sleeve (34) and extend axially are formed in the side wall of the die sleeve (34), and the communication grooves (343) are used for enabling the welding device (6) to extend into for welding; the die sleeve (34) is positioned between the pressure receiving head (31) and the pressing component (32), the bottom end of the die sleeve (34) is inserted into the positioning groove (39), a supporting ring (341) for supporting the bottom end of a stator workpiece is arranged on the inner side wall of the die sleeve (34) in a protruding mode, a first groove (344) and a second groove (345) which extend along the axial direction of the die sleeve (34) and radially penetrate through the side wall of the die sleeve (34) along the die sleeve (34) are formed in the side wall of the die sleeve (34), the first groove (344) penetrates through the bottom end of the die sleeve (34) downwards, and the second groove (345) penetrates through the top end of the die sleeve (34) upwards; the communication groove (343) comprises a strip-shaped section (346) and semicircular ends (347) arranged at two ends of the strip-shaped section (346), the upper surface of the supporting ring (341) is positioned in the height range of the semicircular ends (347) at the bottom end of the communication groove (343), and the semicircular ends (347) radially penetrate through the supporting ring (341) along the die sleeve (34).

2. A stator core welding machine as claimed in claim 1 wherein: the novel die is characterized in that an ejector device (2) is arranged on the frame (1), the ejector device (2) comprises an ejector block (21) and an ejector driving piece (22), the ejector driving piece (22) is arranged on the frame (1) and connected with the ejector block (21) to drive the ejector block (21) to ascend, the ejector block (21) is located below the pressure receiving head (31), and a through groove (311) for the ejector block (21) to upwards prop against the bottom end of the die sleeve (34) is formed in the end face of the pressure receiving head (31).

3. A stator core welding machine as claimed in claim 1 wherein: the conveying device (4) comprises a conveying table (41) and a conveying driving assembly (42), the fixing device (3) is arranged on the conveying table (41), the conveying table (41) is arranged on the frame (1) in a sliding mode along the direction from the feeding port to the welding station, and the conveying driving assembly (42) is arranged on the frame (1) and connected with the conveying table (41) to drive the conveying table (41) to move from the feeding port to the welding station (12).

4. A stator core welding machine as claimed in claim 3 wherein: the welding positioning device (7) comprises a rotating motor (71) and a rotating table (72), the rotating table (72) is horizontally and rotatably arranged on the conveying table (41), the pressure receiving head (31) is arranged on the conveying table (41), and the rotating motor (71) is arranged on the conveying table (41) and is coaxially connected with the rotating table (72) to drive the rotating table (72) to rotate; the initial positioning device (5) comprises a visual component (53) and a rotation controller, wherein the visual component (53) is electrically connected with the rotation controller and is used for shooting a die sleeve (34) and transmitting formed images to the rotation controller, the rotation controller is electrically connected with a rotation motor (71), receives and analyzes an electric signal of the visual component (53), and then controls the rotation motor (71) to work so that a welding seam is aligned with the welding device (6).

5. A stator core welding machine as claimed in claim 3 wherein: the initial positioning device (5) further comprises a position sensor (51), a sensing piece (52) and a homing controller, the sensing piece (52) is arranged on the rotating table (72), the position sensor (51) is arranged on the conveying table (41) and is electrically connected with the homing controller, the homing controller is used for sending an electric signal to the homing controller when sensing the sensing piece (52), and the homing controller is electrically connected with the rotating motor (71) and is used for controlling the rotating motor (71) to stop after receiving the electric signal of the position sensor (51).

6. A stator core welding machine as defined in claim 4 wherein: the visual component (53) comprises an area-array camera (531), a focusing lens (532) and a light supplementing lamp (533), wherein the area-array camera (531) and the light supplementing lamp (533) are arranged on the frame (1), the light supplementing lamp (533) is located between the area-array camera (531) and the die sleeve (34), and the focusing lens (532) is located between the area-array camera (531) and the light supplementing lamp (533) and is arranged on the area-array camera (531).