CN111756196A

CN111756196A - Stator core assembly system and stator core assembly method

Info

Publication number: CN111756196A
Application number: CN202010511823.6A
Authority: CN
Inventors: 王宏; 周剑勇; 方天兵
Original assignee: Hitachi Elevator Motor Guangzhou Co Ltd
Current assignee: Hitachi Elevator China Co Ltd; Hitachi Elevator Motor Guangzhou Co Ltd
Priority date: 2020-06-08
Filing date: 2020-06-08
Publication date: 2020-10-09
Anticipated expiration: 2040-06-08
Also published as: CN111756196B

Abstract

The invention discloses a stator core assembly system and a stator core assembly method, which are used for assembling at least two core assembly blocks to form a stator core, and the stator core assembly system comprises: the tooling plate is used for loading the stator core; the device comprises a conveying line, an auxiliary mounting device, a forming and press-fitting device, a forming and shaping device, a welding device and a discharging device. The stator core assembling system disclosed by the invention realizes the automation of stator core assembling, improves the working efficiency, reduces the labor intensity of workers, reduces the labor cost, avoids the phenomena of out-of-roundness, warping deformation, deflection and the like of the iron core of a product, improves the yield of the product, and enables the stator core assembling to be more scientific and efficient.

Description

Stator core assembly system and stator core assembly method

Technical Field

The invention relates to the field of motors, in particular to a stator core assembling system and a stator core assembling method.

Background

The stator core structure of the permanent magnet synchronous motor is formed by splicing a plurality of spliced type punching sheet structures, and is combined into a whole through a reliable fixing structure, so that the utilization rate of punching sheet materials can be greatly improved, and automatic winding and efficient assembly can be realized. Because the iron core is a block type, the iron core needs to be assembled. The traditional stator core assembling process is mainly manual assembling, not only is the efficiency low, the labor intensity is large, but also the assembling precision is poor, the phenomena of out-of-roundness, warping deformation of the core, deflection and the like can occur to the product, and the product yield is not high.

Disclosure of Invention

Based on the technical scheme, the invention provides the stator core assembly system and the stator core assembly method, aiming at overcoming the defects that the prior art is low in efficiency, high in labor intensity and poor in assembly precision, products are possibly out of roundness, warped, deformed and inclined, and the like, and the product yield is not high.

The technical scheme is as follows:

a stator core assembly system for assembling at least two core segments to form a stator core, comprising:

the tooling plate is used for loading the stator core;

the conveying line is used for conveying the tooling plate;

the auxiliary mounting device is mounted in parallel with the conveying line and used for positioning the tooling plate and assembling the iron core assembling blocks into a round stator iron core;

the forming press-fitting device is arranged in parallel with the conveying line and positioned on one side of the auxiliary mounting device, and is used for positioning the tooling plate and press-fitting the stator iron cores to the same height;

the forming and shaping device is arranged in parallel with the conveying line and is positioned on one side of the forming and press-mounting device, and the forming and shaping device is used for positioning the tooling plate, shaping the stator core and adjusting the roundness of the stator core;

the welding device is arranged in parallel with the conveying line and positioned on one side of the forming and press-fitting device, and is used for positioning the tooling plate and welding the stator core;

and the blanking device is arranged on one side of the conveying line and used for positioning the tooling plate and taking the stator core down from the tooling plate.

The stator core assembly system of the technical scheme realizes automation of stator core assembly, improves work efficiency, reduces labor intensity, reduces labor cost, avoids the phenomena of out-of-roundness, warping deformation and deflection of the iron core and the like of a product, improves product yield, and enables stator core assembly to be more scientific and efficient.

Specifically, when the stator core assembling system adopting the technical scheme is used, the auxiliary mounting device, the forming press-fitting device, the forming shaping device, the welding device and the blanking device are mounted in parallel along with the conveying line to form corresponding stations, the tooling plates are placed on the conveying line, and the tooling plates are transferred to each station along with the conveying line to perform corresponding processes.

When the tooling plate flows into a station where the auxiliary mounting device is located, the auxiliary mounting device positions the tooling plate, the tooling plate is utilized to assemble the iron core assembling blocks into a round stator iron core, and the stator iron core is loaded; after the iron core assembling blocks are assembled into a round stator iron core, the auxiliary mounting device removes the positioning of the tooling plate, and the tooling plate continues to run along with the conveying line.

When the tooling plate flows into a station where the molding press-fitting device is located, the molding press-fitting device positions the tooling plate and presses the stator cores to the same height; and after the press fitting is qualified, the molding press fitting device removes the positioning of the tooling plate, and the tooling plate continues to operate along with the conveying line.

When the tooling plate flows into a station where the forming and shaping device is located, the forming and shaping device positions the tooling plate, shapes the stator core and adjusts the roundness of the stator core; and after the shaping is finished, the shaping and shaping device removes the positioning of the tooling plate, and the tooling plate continues to run along with the conveying line.

When the tooling plate flows into a station where a welding device is located, the welding device positions the tooling plate and welds the stator core; and after the welding is finished, the welding device removes the positioning of the tooling plate, and the tooling plate continues to run along with the conveying line.

When the tooling plate flows into the station where the blanking device is located, the blanking device takes down the stator core from the tooling plate to other production lines or stores the stator core, and the tooling plate is recycled.

In one embodiment, the conveyor line comprises an operation line for conveying the tool plates to different stations, and a return line for conveying the tool plates back to the operation line; the auxiliary mounting device, the forming and press-fitting device, the forming and shaping device, the welding device and the blanking device are mounted along the operating line in parallel, and the auxiliary mounting device, the forming and press-fitting device, the forming and shaping device, the welding device and the blanking device are sequentially mounted along the conveying direction of the operating line.

In one embodiment, the operation lines and the return lines are distributed in an upper layer and a lower layer, the operation lines are positioned on the upper layer of the return lines, and the conveying direction of the operation lines is opposite to the conveying direction of the return lines.

In one embodiment, the stator core assembling system further comprises a wire head lifting platform arranged at the first end of the conveying wire and a wire end lifting platform arranged at the second end of the conveying wire, wherein the second end of the conveying wire is the end opposite to the first end of the conveying wire.

In one embodiment, the tooling plate comprises a bottom plate and at least two groups of positioning components movably arranged on a first side of the bottom plate; the positioning assemblies are arranged at intervals in the circumferential direction, and the positioning assemblies comprise a first position and a second position; when the positioning assemblies are positioned at the first position, the diameter of a first circumference defined by at least two groups of positioning assemblies is a first diameter; when the positioning assemblies are positioned at the second position, the diameter of a second circumference defined by at least two groups of the positioning assemblies is a second diameter; the first diameter is smaller than the second diameter.

In one embodiment, the molding press-fitting device comprises a press-fitting tool which is in contact with the stator core and presses down the stator core, a servo module which drives the press-fitting tool to lift, and a sensor assembly which is arranged in the press-fitting tool and is electrically connected with the servo module.

In one embodiment, the shaping and shaping device comprises a shaping mechanism and a limiting mechanism matched with the shaping mechanism, and a stator core is positioned between the shaping mechanism and the limiting mechanism; the shaping mechanism comprises a first state and a second state, and when the shaping mechanism is in the first state, the shaping mechanism applies pressure to the stator iron core to shape the stator iron core; and when the stator core is in the second state, no acting force exists between the shaping mechanism and the stator core.

In one embodiment, the welding device comprises a welding mechanism, the welding mechanism comprises a welding support, a welding gun assembly connected with the welding support, and a lifting assembly arranged on the welding support, and the welding gun assembly is connected with the welding support through the lifting assembly.

In one embodiment, the blanking device comprises a six-axis robot arranged on one side of the conveying line and a clamping jaw assembly connected with the six-axis robot and used for clamping the stator core.

The technical scheme also provides a stator core assembling method, which comprises the following steps:

placing the tooling plate on a conveying line;

when the tooling plate flows into a station where the auxiliary mounting device is located, the auxiliary mounting device positions the tooling plate, the tooling plate is utilized to assemble the iron core assembling blocks into a round stator iron core, and the stator iron core is loaded;

after the iron core assembling blocks are assembled into a round stator iron core, the auxiliary mounting device removes the positioning of the tooling plate, and the tooling plate continues to run along with the conveying line;

when the tooling plate flows into a station where the molding press-fitting device is located, the molding press-fitting device positions the tooling plate and presses the stator cores to the same height;

after the press fitting is qualified, the molding press fitting device removes the positioning of the tooling plate, and the tooling plate continues to operate along with the conveying line;

when the tooling plate flows into a station where the forming and shaping device is located, the forming and shaping device positions the tooling plate, shapes the stator core and adjusts the roundness of the stator core;

after the shaping is finished, the shaping and shaping device removes the positioning of the tooling plate, and the tooling plate continues to run along with the conveying line;

when the tooling plate flows into a station where a welding device is located, the welding device positions the tooling plate and welds the stator core;

when all the assembling seams of the stator core are welded, the welding device removes the positioning of the tooling plate, and the tooling plate continues to operate along with the conveying line;

when the tooling plate flows into a station where the blanking device is located, the blanking device takes down the stator core on the tooling plate.

According to the technical scheme, the stator core assembling method achieves automation of stator core assembling, improves work efficiency, reduces labor intensity, reduces labor cost, avoids the phenomena of out-of-roundness, warping deformation and deflection of the iron core and the like of a product, improves product yield, and enables stator core assembling to be more scientific and efficient.

Specifically, when the stator core assembling method of the technical scheme is used, the auxiliary mounting device, the forming press-fitting device, the forming shaping device, the welding device and the blanking device are mounted in parallel along with the conveying line to form corresponding stations, the tooling plates are placed on the conveying line and are transferred to each station along with the conveying line to perform corresponding processes.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a stator core assembly system according to an embodiment of the present invention;

FIG. 2 is a schematic view of the tooling plate of FIG. 1;

FIG. 3 is a schematic view of the tooling plate of FIG. 2 in use;

FIG. 4 is a schematic illustration of the conveyor line of FIG. 1;

FIG. 5 is a schematic view of the positioning mechanism and the driving mechanism of FIG. 1;

FIG. 6 is a schematic diagram of the forming press-fitting apparatus of FIG. 1;

FIG. 7 is a schematic structural diagram of a shaping device in the first embodiment of FIG. 1;

FIG. 8 is a schematic view of a portion of the structure of FIG. 7;

FIG. 9 is a schematic structural view of the center slider of FIG. 7;

FIG. 10 is a schematic view of a portion of the structure of FIG. 8;

FIG. 11 is a schematic view of the welding apparatus of FIG. 1;

FIG. 12 is a schematic view of a portion of the structure of FIG. 11;

FIG. 13 is a schematic view of the rotation detecting member shown in FIG. 1;

FIG. 14 is an enlarged view of a portion of FIG. 13;

FIG. 15 is a schematic view of the jaw assembly of FIG. 1 in use;

FIG. 16 is a schematic structural diagram of the shaping device in the second embodiment of FIG. 1;

FIG. 17 is a first view of the first partial structure of FIG. 16;

fig. 18 is a partial schematic structural diagram of fig. 16.

Description of reference numerals:

10. assembling a plate; 11. a base plate; 12. a positioning assembly; 121. a first positioning pin; 122. a second positioning pin; 13. A first positioning portion; 20. a stator core; 21. a first iron core assembling block; 22. a second iron core assembling block; 30. an auxiliary mounting device; 40. a molding press-fitting device; 41. a press-fitting mechanism; 411. pressing and mounting a tool; 4111. a first press-fit plate; 4112. a second press-fit plate; 412. a servo module; 42. a human-computer interaction terminal; 43. a first measuring instrument; 50. a shaping and shaping device; 51. a shaping mechanism; 511. a shaping component; 5111. a shaping substrate; 5112. a central slider; 5113. Shaping the sliding block; 512. a shaping driving member; 513. a shaping reset piece; 5131. a first limiting part; 5132. a second limiting part; 514. a first shaping member; 5141. a first guide groove; 515. a second shaping member; 5151. a second guide groove; 516. a first guide bar; 517. a second guide bar; 518. a second shaping drive; 5191. a first elastic member; 5192. a second elastic member; 52. a limiting mechanism; 53. a central locating piece; 54. a steering mechanism; 541. a gear; 542. a steering drive member; 543. a support shaft; 55. a second measuring instrument; 60. a welding device; 61. a welding mechanism; 611. welding a bracket; 612. a welding gun assembly; 6121. a welding gun substrate; 6122. a welding gun body; 613. a lifting assembly; 62. a rotation mechanism; 621. a rotary drive member; 63. rotating the detecting member; 64. an adjustment member; 641. a strip-shaped slide rail; 642. pushing the driving member; 643. connecting blocks; 65. a third measuring instrument; 70. a blanking device; 71. a six-axis robot; 72. a jaw assembly; 80. a conveying line; 81. an operating line; 82. a return line; 90. a thread head lifting platform; 100. A wire end lifting platform; 110. a positioning mechanism; 111. positioning a plate; 112. a lifting plate; 113. a second positioning portion; 114. A positioning post assembly; 120. a drive mechanism; 130. a sensing member.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Example one

A stator core assembly system, as shown in fig. 1-3, for assembling at least two core segments to form a stator core 20, comprising:

a tooling plate 10 for loading the stator core 20;

a conveyor line 80 for conveying the tooling plate 10;

the auxiliary mounting device 30 is mounted in parallel with the conveying line 80, and the auxiliary mounting device 30 is used for positioning the tooling plates 10 and assembling the iron core assembling blocks into a round stator iron core 20;

the molding press-fitting device 40 is installed in parallel with the conveying line 80 and is positioned on one side of the auxiliary installation device 30, and the molding press-fitting device 40 is used for positioning the tooling plate 10 and press-fitting the stator cores 20 to the same height;

the forming and shaping device 50 is installed in parallel with the conveying line 80 and is positioned on one side of the forming and press-fitting device 40, and the forming and shaping device 50 is used for positioning the tooling plate 10, shaping the stator core 20 and adjusting the roundness of the stator core 20;

the welding device 60 is installed in parallel with the conveying line 80 and located on one side of the forming and press-fitting device 40, and the welding device 60 is used for positioning the tooling plate 10 and welding the stator core 20;

and the blanking device 70 is arranged on one side of the conveying line 80, and the blanking device 70 is used for positioning the tooling plate 10 and taking the stator core 20 off the tooling plate 10.

The stator core assembly system of the embodiment realizes automation of assembly of the stator core 20, improves work efficiency, reduces labor intensity, reduces labor cost, avoids the phenomena of out-of-roundness, warping deformation and deflection of the core and the like of a product, improves product yield, and enables assembly of the stator core 20 to be more scientific and efficient.

Specifically, when the stator core assembling system according to the present embodiment is used, the auxiliary mounting device 30, the molding press-fitting device 40, the molding shaping device 50, the welding device 60, and the blanking device 70 are mounted in parallel with the conveyor line 80 to form corresponding stations, and the tooling plate 10 is placed on the conveyor line 80 and transferred to each station along with the conveyor line 80 to perform a corresponding process.

When the tooling plate 10 flows into a station where the auxiliary mounting device 30 is located, the auxiliary mounting device 30 positions the tooling plate 10, assembles the core assembling blocks into a round stator core 20 by using the tooling plate 10, and loads the stator core 20; after the core assembling blocks are assembled into the round stator core 20, the auxiliary mounting device 30 removes the positioning of the tooling plate 10, and the tooling plate 10 continues to run along with the conveyor line 80.

When the tooling plate 10 flows into a station where the molding press-fitting device 40 is located, the molding press-fitting device 40 positions the tooling plate 10 and presses the stator cores 20 to the same height; after the press fitting is qualified, the forming press fitting device 40 removes the positioning of the tooling plate 10, and the tooling plate 10 continues to operate along with the conveying line 80.

When the tooling plate 10 flows into a station where a forming and shaping device 50 is located, the forming and shaping device 50 positions the tooling plate 10, shapes the stator core 20 and adjusts the roundness of the stator core 20; after the shaping is completed, the shaping and shaping device 50 removes the positioning of the tooling plate 10, and the tooling plate 10 continues to run along with the conveying line 80.

When the tooling plate 10 flows into the station where the welding device 60 is located, the welding device 60 positions the tooling plate 10 and welds the stator core 20; when the welding is completed, the welding device 60 removes the positioning of the tooling plate 10, and the tooling plate 10 continues to run along with the conveyor line 80.

When the tooling plate 10 flows into the station where the blanking device 70 is located, the blanking device 70 takes down the stator core 20 from the tooling plate 10 to other production lines or stores the stator core, and the tooling plate 10 is recovered.

As shown in fig. 1 and fig. 4, in order to facilitate the recycling of the tooling plate 10 after use and achieve the effect of automatic recycling of the tooling plate 10, the conveyor line 80 according to the present embodiment includes an operation line 81 for conveying the tooling plate 10 to different stations, and a return line 82 for returning the tooling plate 10 to the operation line 81; the auxiliary installation device 30, the forming and press-fitting device 40, the forming and shaping device 50, the welding device 60 and the blanking device 70 are installed in parallel along the operation line 81, and the auxiliary installation device 30, the forming and press-fitting device 40, the forming and shaping device 50, the welding device 60 and the blanking device 70 are installed in sequence along the conveying direction of the operation line 81, that is, the stations are arranged in an upstream-downstream relationship in sequence. That is, when the tooling plate 10 is placed on the operation line 81 and conveyed along the operation line 81, the corresponding process is performed through the above-described stations. After the stator core 20 is assembled, the used tooling plate 10 is placed on the return line 82 and conveyed along the return line 82, and the tooling plate 10 is conveyed back to the starting point of the operation line 81, so that the tooling plate 10 is reused.

Specifically, the operation line 81 and the return line 82 are distributed in an upper layer and a lower layer, the operation line 81 is located on the upper layer of the return line 82, so that corresponding processes can be conveniently carried out on each station, and the conveying direction of the operation line 81 is opposite to the conveying direction of the return line 82. In the present embodiment, the operation wire 81 and the return wire 82 are disposed in parallel, and both ends of the operation wire 81 and both ends of the return wire 82 are located on the same plane; i.e. the head end of the handling line 81 is flush with the tail end of the return line 82 and the tail end of the handling line 81 is flush with the head end of the return line 82, so that after the tooling plate 10 has been transported along the handling line 81 to the tail end of the handling line 81, it can be transported back to the head end of the handling line 81 via the return line 82.

This embodiment the stator core assembly system further includes a first lifting platform 90 disposed at the first end of the conveyor line 80 and a last lifting platform 100 disposed at the second end of the conveyor line 80, where the second end of the conveyor line 80 is the end opposite to the first end of the conveyor line 80. That is, when the tool board 10 is transported to the end of the handling line 81 along with the handling line 81, the end-of-line elevating table 100 is at the same height as the handling line 81, receives the tool board 10 from the handling line 81, descends along with the end-of-line elevating table 100, transfers the tool board 10 to the return line 82 located at the lower stage, transports the tool board 10 to the end of the return line 82 along with the return line 82, receives the tool board 10 via the end-of-line elevating table 90, and lifts the tool board 10 up to the handling line 81 for reuse.

As shown in fig. 5, each of the auxiliary mounting device 30, the molding press-fitting device 40, the molding shaping device 50, the welding device 60, and the blanking device 70 of the present embodiment includes a positioning mechanism 110 for positioning the tooling plate 10, and a driving mechanism 120 for driving the positioning mechanism 110 to move up and down; the positioning mechanism 110 is initially located below the operating line 81, and the lifting direction of the positioning mechanism 110 is perpendicular to the plane of the tooling plate 10. The bottom plate 11 of the tooling plate 10 is provided with a first positioning portion 13, and the positioning mechanism 110 includes a positioning plate 111 provided with a second positioning portion 113 and a lifting plate 112 connected to a driving mechanism 120; the lifting plate 112 is connected with the positioning plate 111 to drive the positioning plate 111 to lift.

The driving mechanism 120 according to the present embodiment is an air cylinder, and may be a hydraulic cylinder or an electric cylinder in other embodiments. And the number of the driving mechanisms 120 may be set to at least two.

And the auxiliary mounting device 30, the molding press-fitting device 40, the molding shaping device 50, the welding device 60, and the blanking device 70 each include a sensing member 130 for sensing whether the tooling plate 10 is in place. The sensing member 130 is disposed on the positioning mechanism 110 of the corresponding device, or the sensing member 130 is disposed on one side of the positioning mechanism 110. When the tooling plate 10 flows into the present station along with the conveying line 80, and the sensing element 130 senses that the tooling plate 10 is in place, the driving mechanism 120 drives the positioning mechanism 110 to ascend, and the tooling plate 10 is lifted and positioned by the positioning mechanism 110. The sensing element 130 is a proximity switch, and may be disposed on the positioning mechanism 110 or a frame for carrying the positioning mechanism 110 and the conveying line 80. In this embodiment, the sensor 130 is disposed on the positioning mechanism 110.

In this embodiment, the first positioning portion 13 is a positioning hole formed in the tooling plate 10, and the second positioning portion 113 is a pin shaft inserted into and engaged with the positioning hole. After the positioning mechanism 110 is jacked, the pin shaft is in inserting fit with the positioning hole, so that the positioning mechanism 110 positions the tooling plate 10; on the contrary, the positioning mechanism 110 is lowered to drop the tooling plate 10 onto the operation line 81, and the pin shaft is separated from the positioning hole, so that the tooling plate 10 flows into the operation line 81. In order to enhance the positioning effect, in this embodiment, the number of the positioning holes is two, the two positioning holes are symmetrically arranged along the symmetry axis of the tooling plate 10, and the pin shafts correspond to the positioning holes one to one. In other embodiments, the number of the positioning holes may be increased or decreased as appropriate, or in other embodiments, the engagement of the first positioning portion 13 and the second positioning portion 113 may be achieved by means of insert, snap, or the like.

In this embodiment, the operation line 81 is an example of a double-speed chain conveying line, and includes two conveying chains arranged in parallel at intervals, and the positioning mechanism 110 is driven by the driving mechanism 120 to pass through an interval space between the two conveying chains arranged in parallel at intervals to lift up the tooling plate 10 on the conveying chains. That is, "parallel installation" in this embodiment means that the devices at each station are disposed in the space between the two conveyor chains.

When the tooling plate 10 flows into each station of the present embodiment along with the conveying line 80, the driving mechanism 120 drives the positioning mechanism 110 to ascend, and the second positioning portion 113 is engaged with the first positioning portion 13, so as to position the tooling plate 10 by the positioning mechanism 110; at this point the tooling plate 10 is clear of the conveyor line 80 and above the conveyor line 80. After the corresponding process is completed, the driving mechanism 120 drives the positioning mechanism 110 to descend, so that the second positioning portion 113 is disengaged from the first positioning portion 13, and the tooling plate 10 falls onto the operation line 81 and flows into the next station.

When the tooling plate 10 flows into the station where the auxiliary installation device 30 is located, the positioning mechanism 110 of the auxiliary installation device 30 positions the tooling plate 10, and the iron core assembling blocks are assembled by using the tooling plate 10.

As shown in fig. 2, the tooling plate 10 of the present embodiment includes a bottom plate 11, and at least two sets of positioning assemblies 12 movably disposed on a first side of the bottom plate 11; at least two groups of positioning assemblies 12 are arranged at intervals in the circumferential direction, and the at least two groups of positioning assemblies 12 comprise a first position and a second position; when the positioning assemblies are located at the first position, the diameter of a first circumference defined by at least two groups of the positioning assemblies 12 is a first diameter; when in the second position, the diameter of a second circumference enclosed by at least two groups of the positioning components 12 is a second diameter; the first diameter is smaller than the second diameter. In other embodiments, a third position, a fourth position, etc. may be included, i.e., by providing different positions of the positioning assembly 12, the adaptation of stator cores 20 of different diameters is achieved.

The tooling plate 10 of the embodiment can improve the assembly efficiency and the assembly yield of the stator core 20, avoid the problem that the iron core assembly blocks cannot be embedded, can be suitable for assembling the stator cores 20 with different diameters, and has strong universality.

If the stator core 20 is assembled by using the tooling plate 10 of the present embodiment, when the stator core 20 with the first diameter needs to be assembled, the positioning assembly 12 on the bottom plate 11 is adjusted to the first position; taking the first iron core assembling blocks 21 with the same number as the positioning assemblies 12, and installing the first iron core assembling blocks 21 on the positioning assemblies 12 in a one-to-one correspondence manner; and embedding a second iron core assembling block 22 at the interval part between two adjacent first iron core assembling blocks 21, so that the first iron core assembling block 21 and the second iron core assembling block 22 enclose a whole circle type stator iron core 20, and the assembling process of the auxiliary mounting device 30 station is completed. When the stator core 20 with the second diameter needs to be assembled, the positioning assembly 12 is adjusted to the second position, the first core assembling block 21 and the second core assembling block 22 are replaced by a third core assembling block and a fourth core assembling block with larger diameters, and then the steps are repeated. In the embodiment, the positioning assemblies 12 are movably arranged, so that the circumferences surrounded by at least two groups of positioning assemblies 12 are matched with the stator cores 20 with different diameters, and the assembly of the stator cores 20 with different diameters is realized.

Taking the stator core 20 with the first diameter as an example, since the tooling plate 10 of the present embodiment employs the positioning assemblies 12 arranged at intervals, when the core assembling blocks are assembled, the first core assembling blocks 21 and the positioning assemblies 12 can be firstly positioned and matched, the first core assembling blocks 21 are assembled at intervals, then the second core assembling blocks 22 are embedded between two adjacent first core assembling blocks 21, and when no pressure is applied, the embedding depth of the second core assembling blocks 22 is more than 5mm, so as to ensure that the second core assembling blocks 22 can be completely embedded into the space between two adjacent first core assembling blocks 21 under the action of pressure after the pressure is applied to the round stator core 20. The embodiment avoids the problem that the last iron core block cannot be embedded or is unbalanced in pressure, improves the assembling efficiency and reduces the assembling difficulty.

In this embodiment, the first circumference and the second circumference are concentrically arranged, the bottom plate 11 is provided with a positioning column assembly 114 in inserting connection with the positioning assembly 12, the positioning column assembly 114 includes a first positioning column and a second positioning column which are arranged at an interval, and an extension line of a connection line of the first positioning column and the second positioning column passes through a circle center of the first circumference enclosed by the positioning assembly 12. That is, in the present embodiment, the positioning column assembly 114 is movably engaged with the positioning assembly 12, so as to realize the transition between the first position and the second position of the positioning assembly 12, and the positioning core tooling plate 10 of the present embodiment can be adapted to assemble two positioning cores with different diameters. Specifically, in this embodiment, the first and second positioning columns are arranged at intervals along the radial line direction of the first or second circumference, so as to realize the first and second positions of the positioning assembly 12, and in other embodiments, the number of the positioning columns may be increased, for example, the third positioning columns may be arranged along the radial line direction, so that the positioning assembly 12 realizes the positioning of three positions, and thus the positioning assembly can be adapted to the assembly of positioning iron cores with three different diameters. Similarly, a fourth positioning column, a fifth positioning column and the like can be arranged.

Meanwhile, in other embodiments, different positions of the positioning assembly 12 may be implemented in other manners, for example, a sliding groove matched with the positioning assembly 12 and a fixing member for fixing the positioning assembly 12 may be disposed on the bottom plate 11, and different positions of the positioning assembly 12 are implemented by sliding and fixing the positioning assembly 12 in the sliding groove, so as to meet the assembly requirements of stator cores 20 with different diameters.

In order to ensure the positioning effect, each group of positioning assemblies 12 in this embodiment includes six groups, each group including a first positioning pin 121 and a second positioning pin 122, where the first positioning pin 121 and the second positioning pin 122 are arranged at intervals along the circumferential direction of the six groups of positioning assemblies 12. That is, taking assembling the stator core 20 with the first diameter as an example, each first core assembling block 21 is assisted by the first positioning pin 121 and the second positioning pin 122 for positioning together, and accordingly, in each group of positioning column assemblies 114, the number of the first positioning columns and the number of the second positioning columns are two, so as to ensure the roundness of the assembled stator core 20. In other embodiments, the number of locating pins may be increased or decreased as appropriate.

As shown in fig. 6, the press-fitting apparatus 40 according to the present embodiment includes a press-fitting mechanism 41 that contacts the stator core 20 and presses down the stator core 20, and a first gauge 43 provided on the side of the operating wire 81. The press-fitting mechanism 41 comprises a press-fitting tool 411, a servo module 412 for driving the press-fitting tool 411 to ascend and descend, and a sensor assembly which is arranged in the press-fitting tool 411 and electrically connected with the servo module 412; the first measuring instrument 43 is electrically connected to the servo module 412. That is, the servo module 412 receives the size data of the stator core 20 transmitted by the first measuring instrument 43, and adjusts the displacement parameter, so that the pressure of the press-fitting tool 411 for pressing the stator core 20 is adjustable and controllable, thereby adapting to the stator cores 20 with different sizes and meeting the press-fitting requirements thereof. Specifically, the servo module 412 sets relevant displacement and pressure parameters in the PLC program. The displacement and the pressure of the press-fitting tool 411 are fed back in real time through the sensor assembly, and are combined with the preset press-fitting parameters of the servo module 412, so that the press-fitting precision of the stator core 20 is improved.

The sensor assembly comprises a pressure sensor and a displacement sensor, and double guarantee of press fitting parameter feedback is provided. In other embodiments, any one of a pressure sensor and a displacement sensor may be provided.

In addition, in consideration of the reason that the system may malfunction, the press-fitting mechanism 41 of the present embodiment further includes an alarm, which is electrically connected to the sensor assembly. That is, when data fed back by one or both of the pressure sensor and the displacement sensor and press-fitting parameters initially set by the press-fitting mechanism 41 come in and go out, for example, the press-fitting height of the stator core 20 is not within a specified range value or the pressure is greater than a specified value, the press-fitting mechanism 41 stops working, and the alarm gives an alarm to prompt human intervention.

When the tooling plate 10 loaded with the round stator core 20 flows into the station where the molding press-fitting device 40 of the present embodiment is located along with the conveying line 80, the driving mechanism 120 of the molding press-fitting device 40 drives the positioning mechanism 110 to ascend, the positioning mechanism 110 ascends along with the ascending, the second positioning portion 113 is matched with the first positioning portion 13, and the tooling plate 10 is positioned by the positioning mechanism 110; at this point the tooling plate 10 is clear of the conveyor line 80 and above the conveyor line 80. The first measuring instrument automatically detects the size of the stator core 20, the press-fitting mechanism 41 determines the type and the model of the stator core 20 according to the size data fed back by the first measuring instrument, so that the press-fitting mechanism 41 automatically adjusts corresponding forming press-fitting parameters according to the type of the stator core 20, and the press-fitting mechanism 41 applies pressure to the stator core 20 on the tooling plate 10 according to the forming press-fitting parameters for press-fitting; after the press fitting is in place, the driving mechanism 120 drives the positioning mechanism 110 to descend, so that the second positioning portion 113 is disengaged from the first positioning portion 13; the tooling plate 10 is dropped onto the conveyor line 80 and flows to the next station. The molding press-fitting device 40 of the embodiment does not need to manually frequently take out and return the tooling plate 10 to the conveying line 80 for press-fitting the stator core 20, does not need to press-fit by a hand hammer, only needs to automatically eject the tooling plate 10 through the positioning mechanism 110, press-fit and then fall back, so that the tooling plate 10 comprises a press-fitting state and a transportation state, when the tooling plate 10 is ejected, the tooling plate 10 is static, the press-fitting of the stator core 20 is facilitated, and the stator core is in the press-fitting state; when the tooling plate 10 falls back to the conveying line 80, the tooling plate 10 flows along with the conveying line 80, and the tooling plate 10 is conveyed to the next station and is in a transportation state. This embodiment enables the press-fitting process of stator core 20 to better cooperate with conveyor line 80, improves work efficiency, and reduces manual labor intensity.

The first measuring instrument 43 of the present embodiment is a correlation laser sensor, and thus the correlation laser sensor of the present embodiment is provided on two opposite sides of the operation line 81.

Specifically, the servo module 412 of the present embodiment includes a servo motor electrically connected to the first measuring instrument 43 and a screw-nut pair connected to the servo motor, and a nut seat of the screw-nut pair is connected to the press-fitting tool 411. The screw nut pair is driven to operate by the output power of the servo motor, and the rotary power of the servo motor is converted into the linear motion of the press fitting tool 411.

The molding press-fitting device 40 of the present embodiment further includes a human-computer interaction terminal 42, and the human-computer interaction terminal 42 is electrically connected to the press-fitting mechanism 41. Specifically, the human-computer interaction terminal 42 is electrically connected with the sensor assembly, so that the press-fitting parameters can be displayed in real time through a display on the human-computer interaction terminal 42, and the press-fitting parameters can be manually monitored. When the press-fitting parameters are abnormal and the alarm does not give an alarm, the operation can be suspended for manual inspection through an emergency stop button on the human-computer interaction terminal 42, so that the operation is ensured to be safe.

In addition, the human-computer interaction terminal 42 according to the present embodiment is electrically connected to the first measuring instrument 43, and the specification, the size, and the like of the stator core 20 can be displayed in real time through a display of the human-computer interaction terminal 42.

Because the forming press-fitting device 40 of the present embodiment is compatible with stator cores 20 of different specifications, in order to better apply pressure to stator cores 20 of different specifications, the press-fitting tool 411 of the present embodiment includes a first press-fitting plate 4111 and a second press-fitting plate 4112 which are stacked and connected to each other, the outer diameter of the first press-fitting plate 4111 is larger than the outer diameter of the second press-fitting plate 4112, and the first press-fitting plate 4111 is connected to the servo module 412. That is, the second press-fitting plate 4112 is located at the lower layer of the first press-fitting plate 4111, and when the stator core 20 with a smaller diameter is press-fitted, the second press-fitting plate 4112 is used for contacting and press-fitting the stator core 20, and when the stator core 20 with a larger diameter is press-fitted, the first press-fitting plate 4111 is used for contacting and press-fitting the stator core 20.

As shown in fig. 7, the shaping and shaping device 50 of the present embodiment includes a shaping mechanism 51 and a limiting mechanism 52 engaged with the shaping mechanism 51, and the stator core 20 is located between the shaping mechanism 51 and the limiting mechanism 52; the shaping mechanism 51 comprises a first state and a second state, and when the shaping mechanism 51 is in the first state, the shaping mechanism 51 applies pressure to the stator core 20 to shape; in the second state, no force acts between the shaping mechanism 51 and the stator core 20.

When the tooling plate 10 flows into the station where the forming and shaping device 50 of the present embodiment is located along with the conveying line 80, the driving mechanism 120 of the forming and shaping device 50 drives the positioning mechanism 110 to ascend, and the second positioning portion 113 is engaged with the first positioning portion 13, so that the tooling plate 10 is positioned by the positioning mechanism 110; at this point the tooling plate 10 is clear of the conveyor line 80 and above the conveyor line 80. The shaping mechanism 51 is adjusted to the first state from the second state, pressure is applied to the stator core 20 for shaping, the stator core 20 is located between the limiting mechanism 52 and the shaping mechanism 51, the pressure applied by the shaping mechanism 51 is matched with the limiting mechanism 52, the stator core 20 is shaped, after shaping is completed, the shaping mechanism 51 returns to the second state, the driving mechanism 120 drives the positioning mechanism 110 to descend, the second positioning portion 113 is disengaged from the first positioning portion 13, and the tooling plate 10 falls onto the conveying line 80 and flows into the next station. The shaping process of the stator core 20 can be better matched with the conveying line 80, so that the working efficiency is improved, and the labor intensity of workers is reduced; and the phenomena of out-of-roundness, warping deformation, deflection and the like of the iron core after the stator iron core 20 is assembled are avoided, and the assembling yield of the stator iron core 20 is improved.

The positioning mechanism 110, the driving mechanism 120, the shaping mechanism 51, and the limiting mechanism 52 of the shaping and shaping device 50 according to the present embodiment form two shaping assemblies, and the two shaping assemblies have different specifications and are used for shaping the stator cores 20 having the two different specifications, respectively. In other embodiments, the two shaping assemblies can be set to have the same specification so as to improve the shaping efficiency. Meanwhile, in other embodiments, more than two groups of shaping assemblies can be arranged in parallel.

In addition, the shaping and shaping apparatus 50 of the present embodiment further includes a second measuring instrument 55 installed in parallel with the operation wire 81, and the stator core 20 is transported to a station where the corresponding shaping and assembling body is located for shaping by the size of the stator core 20 measured by the second measuring instrument 55. The second measuring instrument 55 is a correlation laser sensor.

As shown in fig. 8-9, the shaping mechanism 51 includes a shaping component 511 movably disposed on the positioning plate 111, and a shaping driving component 512 disposed on the lifting plate 112 and used for driving the shaping component 511; after the positioning mechanism 110 is lifted and positions the tooling plate 10, the shaping assembly 511 is inserted into and matched with the hollow part of the stator core 20, and the limiting mechanism 52 is matched with the outer wall of the stator core 20; when the shaping mechanism 51 is in the first state, the shaping component 511 applies pressure to the stator core 20 to shape; when the shaping mechanism 51 is in the second state, no force is applied between the shaping assembly 511 and the stator core 20. The present embodiment further includes a guide post for guiding the elevation of the positioning mechanism 110.

The shaping component 511 comprises a shaping base plate 5111 arranged on the positioning plate 111 and a shaping movable member arranged on the shaping base plate 5111, and the shaping driving member 512 is used for driving the shaping movable member; when the stator core is in the first state, the outer diameter of the shaping moving part is a first outer diameter, and at the moment, the outer wall of the shaping moving part applies pressure to the inner wall of the hollow part of the stator core 20, wherein the pressure direction is a centrifugal direction; when the stator core 20 is in the second state, the outer diameter of the shaping moving member is a second outer diameter, the second outer diameter is smaller than the first outer diameter, and no acting force exists between the outer wall of the shaping moving member and the inner wall of the hollow portion of the stator core 20.

The shaping moving part comprises a central sliding block 5112 arranged on the shaping base plate 5111 and a shaping sliding block 5113 which is arranged around the periphery of the central sliding block 5112 and is in contact fit with the central sliding block 5112; the shaping driving element 512 drives the central sliding block 5112 to lift; the contact surface of the central slider 5112 and the shaping slider 5113 is an inclined surface, and the inclined direction of the inclined surface and the axis of the central slider 5112 form an included angle. The shaping substrate 5111 is a circular substrate, the central slider 5112 is disposed at the center of the shaping substrate 5111, and a through hole is disposed at the center of the shaping substrate 5111, and the inner diameter of the through hole is smaller than the outer diameter of the central slider 5112 near one side of the through hole, so that the central slider 5112 cannot fall off the shaping substrate 5111 due to the through hole. The shaping driving member 512 is a telescopic cylinder with a telescopic rod, and the inner diameter of the through hole is larger than the outer diameter of the telescopic rod of the shaping driving member 512, so that the telescopic rod of the shaping driving member 512 can penetrate through the through hole and jack up the central sliding block 5112.

Since the contact surface between the central slider 5112 and the shaping slider 5113 is an inclined surface and the inclined direction forms an included angle with the axis of the central slider 5112, when the central slider 5112 is jacked up, the contact surface between the central slider 5112 and the shaping slider 5113 changes to push the shaping slider 5113 to move, the shaping slider 5113 applies pressure to the inner wall of the stator core 20, the outer wall of the stator core 20 is provided with the limiting mechanism 52, and shaping of the stator core 20 is realized by the extrusion effect of the limiting mechanism 52 and the shaping slider 5113 on the stator core 20. The inclination direction of the contact surface between the central slider 5112 and the shaping slider 5113 in this embodiment is inclined from the top to the bottom from the inside to the outside; that is, the center block 5112 has a small upper end and a large lower end, so that the truing blocks 5113 are pushed outward when the center block 5112 is raised. Conversely, in other embodiments, the inclination direction of the contact surface between the central slider 5112 and the shaping slider 5113 may be set to be inclined from the top to the bottom; that is, the upper end of the central slider 5112 is a large end and the lower end is a small end, so that the truing slider 5113 is pushed outward when the central slider 5112 descends.

The number of the shaping sliders 5113 is at least two, and at least two shaping sliders 5113 are uniformly arranged at intervals along the circumferential direction of the central slider 5112. The number of the shaping sliders 5113 in this embodiment is eight, so that shaping accuracy is ensured. In other embodiments, the number of the reforming sliders 5113 may be increased or decreased as appropriate.

Specifically, the shaping slider 5113 is a sector, the central slider 5112 is a pyramid or a frustum, and the larger end of the central slider 5112 is an end in contact with the shaping base 5111, so that when the central slider 5112 is lifted, the shaping slider 5113 is displaced in a direction away from the central slider 5112, and is in an outwardly expanded state, and the inner wall of the stator core 20 is pressed to shape.

As shown in fig. 10, in view of the fact that the shaping slider 5113 cannot return and retract when the central slider 5112 loses the driving force of the shaping driving element 512 and falls after being lifted, the shaping assembly 511 according to the present embodiment further includes a shaping returning element 513, wherein the shaping returning element 513 includes a first limiting portion 5131 disposed on the shaping slider 5113 and a second limiting portion 5132 disposed on the shaping base plate 5111 and engaged with the first limiting portion 5131. At least one of the first limiting part 5131 and the second limiting part 5132 is an elastic limiting part; when the shaping driving element 512 drives the central sliding block 5112 to ascend, in a first state, the first limiting portion 5131 and the second limiting portion 5132 are in contact and generate an elastic force therebetween; when the shaping driving member 512 drives the central sliding block 5112 to descend, the first limiting portion 5131 and/or the second limiting portion 5132 are/is reset to return to the second state.

Specifically, the number of the first limiting portions 5131 and the number of the second limiting portions 5132 correspond to the number of the shaping sliders 5113 one to one, an accommodating cavity is formed in the shaping slider 5113, the first limiting portions 5131 are arranged in the accommodating cavity and fixedly connected with the shaping sliders 5113, and the second limiting portions 5132 are fixedly arranged at the peripheral edge of the shaping substrate 5111 and located in the accommodating cavity of the shaping sliders 5113. The second limiting portion 5132 of the present embodiment includes a fixing plate connected to the shaping substrate 5111, and a return spring connected to the fixing plate, and the extending and contracting direction of the return spring is the same as the displacement direction of the shaping slider 5113; the first limit portion 5131 is a limit block. When the central slider 5112 is lifted, the central slider 5112 pushes the shaping slider 5113 to expand outwards to displace, at this time, the return spring is in contact with the limiting block and is compressed, and an elastic force of interaction exists between the return spring and the limiting block; when the central slider 5112 falls back, the shaping slider 5113 connected to the limiting block loses the action of the pushing force of the central slider 5112, so that the return spring is reset to generate a stretching force to push the limiting block to retract, the shaping slider 5113 is driven to retract to the initial position, the outer diameter of the shaping moving part is reduced, and the stator core 20 can be conveniently withdrawn from the hollow part.

In this embodiment, the first and

second stoppers

5131 and 5132 are provided to automatically return the reforming slider 5113 and limit the outward expansion of the reforming slider 5113, thereby preventing the reforming slider 5113 from falling off the reforming substrate 5111 due to the outward movement.

The limiting mechanism 52 of the present embodiment includes a limiting plate, and a hollow limiting portion disposed on the limiting plate, wherein the hollow limiting portion is a circular hollow portion; the inner wall of the hollow limiting part is matched with the outer wall of the stator core 20. Thereby the shaping moving part forms annular well kenozooecium after with the limiting plate cooperation, and annular well kenozooecium is used for holding stator core 20 to through the outside pressure that expands of shaping moving part, make stator core 20's inner wall and outer wall respectively with shaping moving part, limiting plate inner wall contact, realize stator core 20's shaping with the interact power of limiting plate, shaping moving part and stator core 20. The thickness of the limiting plate matches the thickness of the stator core 20.

As shown in fig. 11, the welding device 60 includes a welding mechanism 61, the welding mechanism 61 includes a welding support 611, a welding torch assembly 612 connected to the welding support 611, and a lifting assembly 613 disposed on the welding support 611, and the welding torch assembly 612 is connected to the welding support 611 through the lifting assembly 613. The lifting direction of the lifting assembly 613 is the same as the lifting direction of the positioning mechanism 110.

When the tooling plate 10 flows into the station where the welding device 60 of the present embodiment is located along with the conveyor line 80, the driving mechanism 120 drives the positioning mechanism 110 to ascend, and the positioning mechanism 110 ascends along with the ascending, so that the second positioning portion 113 is engaged with the first positioning portion 13, and the tooling plate 10 is positioned by the positioning mechanism 110; at this point the tooling plate 10 is clear of the conveyor line 80 and above the conveyor line 80. At this time, the welding torch unit 612 of the welding mechanism 61 contacts the inner wall of the stator core 20, and automatically welds the stator core 20. After the welding is completed, the driving mechanism 120 drives the positioning mechanism 110 to descend, so that the second positioning portion 113 is disengaged from the first positioning portion 13, and the tooling plate 10 falls onto the conveying line 80 and flows into the next station. The embodiment enables the welding process of the stator core 20 to be better matched with the conveying line 80, improves the working efficiency and reduces the labor intensity of workers; and the welding consistency is ensured and the welding quality is improved by an automatic welding mode.

Initially, the welding gun assembly 612 is positioned above the tooling plate 10, and when welding is required, the welding gun assembly 612 is driven to descend by the elevating assembly 613, so that the welding gun assembly 612 contacts the stator core 20 to perform welding. In addition, during the welding process, the welding gun assembly 612 can also be driven to ascend and descend by the ascending and descending assembly 613, so that the welding gun assembly 612 can weld along the length direction of the welding seam, and the welding length is matched with the welding seam, not only one point is welded. After the welding is completed, the lifting unit 613 drives the welding gun assembly 612 to ascend, so that the welding gun assembly 612 is separated from the stator core 20, and the welding is completed. In the present embodiment, TIG welding, that is, a non-consumable inert gas arc welding process is used for the welding.

The lifting assembly 613 comprises a lead screw nut pair arranged on the welding bracket 611 and a driving motor for driving the lead screw nut pair; the welding gun assembly 612 is connected with the nut seat of the lead screw nut pair. The welding gun assembly 612 is driven to lift by lifting and lowering the nut seat. In addition, the lifting assembly 613 of the present embodiment further includes a guide rail disposed on the welding bracket 611, a length direction of the guide rail is consistent with a lead screw direction of the lead screw nut pair, and the welding gun assembly 612 is in sliding fit with the guide rail, so as to ensure stability of the welding gun assembly 612 in a lifting process and avoid skewing.

As shown in fig. 12, the welding gun assembly 612 of the present embodiment includes a welding gun substrate 6121 and at least two welding gun bodies 6122 disposed on the welding gun substrate 6121, where the at least two welding gun bodies 6122 are disposed at intervals along a circumferential direction of the welding gun substrate 6121; the welding gun substrate 6121 is connected to the lifting assembly 613. Since the stator core 20 is annular, in order to improve welding efficiency, at least two welding gun bodies 6122 are provided at intervals in the circumferential direction of the welding gun base plate 6121 in the present embodiment, so that at least two welding seams can be welded per welding cycle. For example, when the iron core assembling blocks are single-tooth windings and the number of the iron core assembling blocks is two, the stator iron core 20 has two welding seams, and at the moment, two welding seams can be welded simultaneously only by one round of welding.

Referring to fig. 5, the welding device 60 further includes a rotating mechanism 62, the rotating mechanism 62 includes a rotating shaft and a shaft sleeve which are disposed between the positioning plate 111 and the lifting plate 112 and are matched with each other, one end of the rotating shaft is connected with the positioning plate 111, the shaft sleeve is connected with the lifting plate 112, and the axis of the rotating shaft is parallel to the lifting direction of the positioning mechanism 110. Through the matching of the rotating shaft and the shaft sleeve, the positioning plate 111 can rotate relative to the lifting plate 112, and the connection relationship between the positioning plate 111 and the lifting plate 112 is not affected, so that the positioning plate 111 can still lift along with the lifting plate 112. After one round of welding is completed, the positioning plate 111 can be directly or indirectly shifted to rotate, so that the tooling plate 10 rotates along with the positioning plate 111, the purpose of changing the position of the stator core 20 is achieved, the welding gun body 6122 is aligned to other unwelded welding seams, and the next round of welding is performed on the stator core 20.

The rotating mechanism 62 of this embodiment further includes a rotating driving member 621, and the other end of the rotating shaft is connected to the rotating driving member 621. The positioning plate 111 is automatically driven to rotate through the rotary driving piece 621, manual shifting is not needed, and full-automatic welding is achieved. Specifically, the rotary driving member 621 includes a rotary motor and a speed reducer connected to each other, and the rotary shaft passes through the lifting plate 112 and is connected to an output shaft of the speed reducer. The rotation angle of the positioning plate 111 is controlled by presetting the rotation angle of the rotating motor at each time, so that the purpose that the welding gun body 6122 automatically aligns to the welding line is achieved. The rotation precision of the rotation driving member 621 is ± 10 ", and the theoretical deviation is about ± 0.02mm, so that the position of the first round of welding line can be accurately found, and the tungsten needle on the welding gun body 6122 is ensured to be aligned with the welding line.

In several other stations, rotating mechanisms 62 may also be added as appropriate. For example, when the stator core 20 is assembled at the station where the auxiliary mounting device 30 is located, the rotatable mechanism 62 directly or indirectly drives the tooling plate 10 to rotate, so that the core assembling blocks can be assembled into the complete round stator core 20. The same applies to the shaping device 50. In other embodiments, the rotary driving element 621 may be omitted as appropriate, and the tool plate 10 may be rotated by manual dialing.

The number of the welding gun bodies 6122 can be divided by the number of the assembly seams of the stator core 20, and the welding gun bodies 6122 are uniformly arranged at intervals along the circumferential direction of the welding gun substrate 6121.

Taking this embodiment as an example, the number of the iron core assembling blocks of this embodiment is set, each set of the iron core assembling blocks is a three-tooth winding, that is, each set of the iron core assembling blocks includes two welding seams, so that the number of the welding seams of each stator iron core 20 is a bar. In this embodiment, the number of the welding gun bodies 6122 is six, and the six welding gun bodies 6122 are uniformly arranged at intervals along the circumferential direction of the welding gun substrate 6121. Namely, the welding gun body 6122 can weld six welding lines simultaneously, thereby improving the welding efficiency.

When the tooling plate 10 flows into the station where the welding device 60 is located in the embodiment, the rotary driving piece 621 drives the tooling plate 10 to rotate for a fixed angle according to the product model and the type, so as to find the position of the welding seam of the first round of welding; the welding gun assembly 612 descends and is aligned to a welding line for welding, when the welding gun body 6122 contacts the stator core 20, the power supply is automatically switched on, 6 welding gun bodies 6122 are simultaneously welded, after the welding of the first round of welding line is completed, the welding gun assembly 612 ascends by a certain angle to enable the welding gun bodies 6122 to be separated from the stator core 20, the rotary driving piece 621 drives the tooling plate 10 to rotate by 10 degrees, the welding gun assembly 612 descends to contact the stator core 20 for the next round of welding, and 6 rounds of welding are completed in total, so that the whole stator core 20 is welded. After the welding is completed, the welding gun assembly 612 is raised and automatically reset to wait for the next welding of the stator core 20.

As shown in fig. 13-14, in order to further ensure the welding precision, the welding device 60 further includes a rotation detecting member 63 connected to the frame, the rotation detecting member 63 is disposed outside the stator core 20, and the rotation detecting member 63 contacts with a side edge of one of the core assembling blocks. When the rotary driving piece 621 drives the tooling plate 10 to rotate once, whether the rotary detection piece 63 just contacts with the side edge of any iron core assembling block or not is checked, if so, the welding seam is accurately found, welding is carried out, and if not, the rotating angle of the rotary driving piece 621 needs to be adjusted again until the requirement is met. By rotating the detector 63, the position of each weld is ensured to be accurate. Specifically, in order to ensure that the rotation detecting member 63 can contact with the outer wall of the stator core 20 without affecting the rotation of the stator core 20 with the tooling plate 10, the rotation detecting member 63 according to the present embodiment is an elastic detecting piece, and may be, for example, a thin iron piece, a plastic piece, or the like.

As shown in fig. 12, in order to adapt to stator cores 20 with different dimensions and specifications and improve the general performance, the welding gun assembly 612 of the present embodiment further includes an adjusting member 64 for adjusting the position of the welding gun body 6122, where the adjusting member 64 is arranged in one-to-one correspondence with the welding gun body 6122, the welding gun body 6122 at least includes a first position and a second position, and when the adjusting member 64 adjusts the welding gun body 6122 to the first position, the diameter of a first circumference enclosed by at least two welding gun bodies 6122 is a first diameter; when the adjusting piece 64 adjusts the welding gun body 6122 to the second position, the diameter of a second circumference enclosed by at least two welding gun bodies 6122 is a second diameter; the first diameter is smaller than the second diameter. When the welding gun body 6122 is at the first position, the stator core 20 with a smaller diameter and matched with the diameter of the first circumference can be welded; when the welding gun body 6122 is in the second position, the stator core 20 with a larger diameter and a length matching the diameter of the second circumference can be welded.

In order to facilitate the adjustment of the position of the welding gun body 6122, the first circumference and the second circumference are concentrically arranged, the adjusting part 64 includes a strip-shaped slide rail 641 arranged on the welding gun base plate 6121, and a connecting block 643 which is in sliding fit with the strip-shaped slide rail 641 and is connected with the welding gun body 6122; the length direction of the bar-shaped slide rail 641 is identical to the radial direction of the first circumference. Through the sliding of the connecting block 643 in the bar-shaped slide rail 641, the position adjustment of the welding gun body 6122 is realized. That is, when the stator core 20 with a smaller diameter needs to be welded, the connecting block 643 slides in the bar-shaped slide rail 641 along the direction of the center of the first circumference, so that each welding gun body 6122 forms the first circumference; similarly, when the stator core 20 with a larger diameter needs to be welded, the connecting block 643 slides in the strip-shaped sliding rail 641 towards the direction away from the center of the first circumference, so that each welding gun body 6122 forms a second circumference. That is, both ends of the bar-shaped slide rail 641 are positions of nodes forming a first circumference and a second circumference.

In order to realize automatic adjustment and save labor, the adjusting member 64 of the present embodiment further includes a driving member 642 for driving the connecting block to slide in the bar-shaped sliding rail 641. The position of the connecting block is adjusted by pushing the driving member 642, so that the position of the welding gun body 6122 is indirectly adjusted.

In this embodiment, the driving member 642 is a telescopic cylinder, the telescopic cylinder is disposed at a first end of the strip-shaped slide rail 641, and a propelling direction of the telescopic cylinder is consistent with a radial direction of the first circumference; the tip inner wall of the second end of bar slide rail 641 is equipped with the elasticity piece that resets, the flexible direction that the elasticity resets with the radial direction of first circumference is unanimous, the second end of bar slide rail 641 be with the relative one end of first end of bar slide rail 641. In the embodiment, for example, the telescopic cylinder is disposed at one end close to the second circumference, and the elastic restoring member is disposed at one end close to the first circumference, when the welding gun body 6122 is in the initial state of the second circumference, the stator core 20 with a larger diameter can be welded. When the stator core 20 with a smaller diameter needs to be welded, the telescopic rod of the telescopic cylinder extends out to push the connecting block to move in the centripetal direction, so that each welding gun body 6122 forms a second circumference, and the elastic resetting piece is pressed at the moment; when the welding gun body 6122 needs to be restored to the initial state, the telescopic rod of the telescopic rod retracts, the elastic restoring piece restores to generate elastic force, and the welding gun body 6122 is pushed back to the initial position.

Specifically, in this embodiment, the strip-shaped slide rail 641 is a strip-shaped hole, and the connecting block is inserted into and engaged with the strip-shaped hole; the elasticity piece that resets is reset spring, reset spring's one end with the end inner wall in bar hole is connected, and the other end is free end or the other end is connected with the connecting block. In other embodiments, the bar-shaped sliding rail 641 may be a bar-shaped groove, and the elastic restoring member may be an elastic sheet.

In this embodiment, the welding device 60 further includes a third measuring instrument 65 for measuring the size of the stator core 20, the third measuring instrument is disposed on the frame, and the third measuring instrument is located on one side of the positioning mechanism 110. The third measuring instrument is electrically connected to the push driver 642 and the rotary driver 621. That is, after the tooling plate 10 is positioned, the third measuring instrument measures the product size, thereby determining the product type and model, adjusting the welding gun body 6122 to the first position or the second position according to the product category, and simultaneously, the tooling plate 10 rotates by a fixed angle under the driving of the rotary driving member 621, thereby finding the position of the first round of welding seam. In this embodiment, the third measuring instrument is a correlation laser sensor.

This embodiment still includes excircle inspection device, excircle inspection device with the transfer chain 80 is installed in parallel, and is used for with frock board 10 location detects stator core 20's external diameter. The excircle inspection device also comprises a positioning mechanism 110 and a driving mechanism 120, the tooling plate 10 is positioned in the manner described above, and the excircle inspection device also comprises a go-no go gauge, the go-no go gauge is used manually or mechanically to measure whether the outer diameter of the stator core 20 meets the requirement, if so, the next procedure is carried out, and if not, the stator core 20 is taken down.

As shown in fig. 1 and fig. 15, the blanking device 70 of the present embodiment includes a six-axis robot 71 disposed on one side of the conveyor line 80, and a jaw assembly 72 connected to the six-axis robot 71 and configured to grip the stator core 20 and/or the tooling plate 10. The clamping jaw assembly 72 comprises a three-jaw retractable clamping jaw and an identification sensor arranged on the clamping jaw, and when the gripper grabs a workpiece, the identification sensor can identify whether the workpiece and the position are accurately positioned. The three-jaw retractable clamping jaw comprises a retractable rod and a jaw hook connected with the retractable rod, and the three-jaw retractable clamping jaw extends into the hollow part of the stator core 20 to grab; when the claw hook grips the stator core 20, the claw hook is in contact with the flat surface portion of the stator core 20, not with the outer circumferential wall surface of the stator core 20, thereby preventing the claw hook from exerting force in the circumferential direction of the winding to damage the winding.

Example two

The structure and principle of the present embodiment are similar to those of the first embodiment, except that the forming and shaping device 50 of the present embodiment has the following structure:

as shown in fig. 16-18, the shaping and shaping device 50 comprises a shaping mechanism 51, wherein the shaping mechanism 51 comprises a first shaping piece 514 and a second shaping piece 515 which are matched with each other; the shaping mechanism 51 comprises a first state and a second state, wherein in the first state, the first shaping piece 514 and the second shaping piece 515 move towards each other to be pressed towards the stator core 20; in the second state, the first and

second shaping members

514, 515 move away from contact with the stator core 20.

The first shaping piece 514 of the present embodiment includes a first shaping plate and a first shaping groove provided on the first shaping plate; the second shaping piece 515 comprises a second shaping plate and a second shaping groove arranged on the second shaping plate; the notch of the first shaping groove is opposite to the notch of the second shaping groove. First plastic recess and second plastic recess are used for holding stator core 20, and through the setting of recess, have certain limiting displacement to stator core 20 simultaneously, make stator core 20 remain throughout in first plastic recess and second plastic recess at the plastic in-process, avoid taking place to slide.

Specifically, the first reshaping groove and the second reshaping groove are both semi-circular arc grooves. Because stator core 20 is circular, and in order to avoid stator core 20 circularity discrepancy better, so this embodiment for the outer wall of better laminating stator core 20, make the pressure of first plastic piece 514 and second plastic piece 515 transmit to stator core 20 better evenly, this embodiment the first plastic recess and second plastic recess are half-circular arc recess to when first plastic recess and second plastic recess move to stator core 20 extrusion in opposite directions, the two can piece into a complete circular, match with the external diameter of stator core 20 and extrude stator core 20, wrap up stator core 20 completely, further guarantee that stator core 20 can not appear warping deformation bending deformation.

The reforming mechanism 51 further comprises a second reforming drive 518 for driving the first and/or

second shaping members

514, 515 into motion. The drive by the second form drive 518 effects the movement of the first and second shaping members 514,515 toward and away from each other. Specifically, the second shaping driver 518 of the present embodiment simultaneously drives the first shaping member 514 and the second shaping member 515 to move toward and away from each other. In other embodiments, the relative movement of both the first and

second shaping members

514, 515 may be achieved by driving only the first shaping member 514, or only the second shaping member 515.

In this embodiment, the first shaping member 514 and the second shaping member 515 are slidably connected to the frame, so that relative sliding on the frame can be realized, and the first shaping member and the second shaping member may be provided in the form of sliding rails and sliding grooves or slidably connected to each other in a manner of being sleeved on the guide rods. In the present embodiment, a guide rod type sliding connection is adopted, so the shaping mechanism 51 further includes a first guide rod 516 and a second guide rod 517 which are respectively connected with the rack, and the first shaping member 514 is directly or indirectly sleeved on the first guide rod 516; the second shaping member 515 is directly or indirectly sleeved on the second guiding rod 517. The length of the first guide rod 516 and the length of the second guide rod 517 are consistent with the moving directions of the first and

second shaping members

514 and 515, respectively.

The second shaping driving member 518 is a telescopic cylinder provided with a telescopic rod; the telescoping rod is connected to the first and/or

second shaping members

514, 515. By means of the extension and retraction of the telescopic rod, a relative displacement of the first and/or second shaping

member

514, 515 is achieved.

Specifically, the shaping driving member 512 of the present embodiment is a telescopic cylinder provided with a telescopic rod; the telescopic rod is connected to the first shaping member 514 and the telescopic cylinder is connected to the second shaping member 515. Thus, this embodiment enables simultaneous actuation of the first and second shaping members 514,515 by only one shaping drive member 512, and necessarily in opposite directions, toward and away from each other.

The shaping mechanism 51 of this embodiment further includes a first slider and a second slider, the first shaping element 514 is connected to the first slider, the first slider is sleeved on the first guide rod 516, and the first guide rod 516 is sleeved with a first elastic element 5191; the second shaping element 515 is connected to the second slider, and the second slider is sleeved on the second guide rod 517; when the shaping mechanism 51 is in the second state, the first elastic member 5191 is compressed and deformed by the pressure of the first slider, and the second elastic member 5192 is compressed and deformed by the pressure of the second slider; when in the first state, the first elastic member 5191 and the second elastic member 5192 are both extended and reset; that is, the expansion and contraction directions of the first elastic member 5191 and the second elastic member 5192 are consistent with the sliding directions of the first slider and the second slider. Taking an illustration as an example, the first elastic member 5191 and the second elastic member 5192 of the present embodiment are respectively disposed at one end of the first guide rod 516 and the second guide rod 517, which is far away from the central axis of the stator core 20, and the first elastic member 5191 is located between the first slider and the frame, so that when the first slider moves relative to the frame, the first elastic member 5191 is squeezed to different degrees, and the first elastic member 5191 applies an elastic force to the first elastic member 5191. Similarly, the second elastic member 5192 is located between the second slider and the frame, and the second slider is subjected to the elastic force exerted by the second elastic member 5192. The first elastic member 5191 and the second elastic member 5192 have the same specification and are both return springs, so that the first shaping member 514 and the second shaping member 515 are prevented from being locked in the moving process by the floating design of the first elastic member 5191 and the second elastic member 5192, and the displacement of the two parts of the first shaping member 514 and the second shaping member 515 is kept consistent, so that the purpose of synchronous displacement of the first shaping member 514 and the second shaping member 515 is achieved.

The shaping mechanism 51 of the present embodiment further includes a center limiting member 53, the center limiting member 53 is connected to the frame and is disposed between the first shaping member 514 and the second shaping member 515, and an axial extension line of the symmetry axis of the stator core 20 passes through the center limiting member 53. That is, the center limiting member 53 has the function that when the first shaping member 514 and the second shaping member 515 move towards each other, the limit position of the center limiting member 53 to the movement of the two members is limited at the symmetry axis of the stator core 20, so that when the first shaping member 514 and the second shaping member 515 extrude the stator core 20, the stress on the two sides of the stator core 20 is balanced, and the shaping accuracy is ensured.

The first shaping piece 514 is provided with a first guide groove 5141 matched with the central limiting piece 53; the second shaping element 515 is provided with a second guide groove 5151 matched with the central limiting element 53. The groove shape of the first guide groove 5141 is matched with the outline of the central limiting member 53, and the first guide groove 5141 and the central limiting member 53 are matched to play a role in guiding and centering the first shaping member 514, so that the position of the first shaping member 514 is ensured to be accurate when the stator core 20 is extruded. Similarly, the second guide groove 5151 and the center stopper 53 cooperate to ensure that the second shaping member 515 is accurately positioned when pressing the stator core 20.

Specifically, the central limiting member 53 is a rectangular parallelepiped with a square cross section, and at least one diagonal line of the square is parallel to or coincident with the symmetry axis of the stator core 20; the first guide groove 5141 and the second guide groove 5151 are both triangular grooves, that is, the first guide groove 5141 and the second guide groove 5151 are both isosceles triangular grooves. The triangular groove is matched with the square limiting part, so that the limiting and guiding effects are better.

In this embodiment, the number of the central limiting members 53 is two, and the two central limiting members 53 are respectively located on two opposite sides of the first shaping groove and/or the second shaping groove, so as to ensure the limiting and guiding centering effects.

In this embodiment, the shaping and shaping device 50 further includes a steering mechanism 54, the steering mechanism 54 includes a supporting shaft 543 connected to the lifting plate 112, a bearing sleeved on the supporting shaft 543, and a gear 541 sleeved outside the bearing, and the gear 541 is connected to the positioning plate 111. Therefore, after the shaping mechanism 51 finishes the first round shaping of the stator core 20, the first shaping piece 514 and the second shaping piece 515 can be driven to move back and forth, at the moment, the stator core 20 can rotate, so that the toggle gear 541 rotates to enable the positioning plate 111 to rotate to drive the stator core 20 on the positioning plate 111 to change the direction, the first shaping piece 514 and the second shaping piece 515 pressurize the stator core 20 to carry out the second round shaping, and can rotate for multiple times as required to realize multidirectional rotation, so that the stator core 20 can be shaped in all directions. After the shaping is completed, the tooling plate 10 descends to the conveying line 80 and flows to the next station.

In this embodiment, the steering mechanism 54 further includes a steering driving member 542, and the steering driving member 542 includes a telescopic cylinder disposed on one side of the gear 541, and a push rod connected to the telescopic cylinder and used for pushing the gear 541 to rotate. Therefore, the gear 541 does not need to be manually shifted, an automatic steering mechanism is adopted, and the automation degree of the device is improved. The telescopic cylinder may be connected to the frame or the lifting plate 112, and when the telescopic cylinder drives the push rod to stretch, the push rod pushes the gear 541 to rotate, thereby indirectly driving the stator core 20 to rotate. In this embodiment, the push rod pushes the gear 541 once, and the gear 541 rotates 90 degrees.

In order to ensure the pushing effect of the push rod, the push rod of the present embodiment is provided with engaging teeth that engage with the gear 541. The gear 541 is engaged with the gear 541 by the engagement teeth, so that the gear 541 is rotated when the push rod is moved telescopically.

In addition, in order to improve the shaping efficiency, two shaping stations are formed by arranging two stator core 20 shaping devices on the same conveying line 80, so that the two stator cores 20 can be shaped simultaneously. Also, the two stator core 20 shaping means may be provided to fit stator cores 20 of different specifications. The size of first plastic recess and second plastic recess can set up to different in two stator core 20 devices promptly to through set up the fourth measuring apparatu in transfer chain 80 one side, specifically adopt laser correlation sensor, measure the product size through laser correlation, thereby judge product type and model, according to product classification, transfer chain 80 sends frock board 10 to corresponding plastic station. In other embodiments the number of shaping stations may be increased or decreased as appropriate.

The embodiment also provides a stator core assembling method, which comprises the following steps:

placing the tooling plate 10 on a conveyor line 80;

when the tooling plate 10 flows into a station where the auxiliary mounting device 30 is located, the auxiliary mounting device 30 positions the tooling plate 10, assembles the core assembling blocks into a round stator core 20 by using the tooling plate 10, and loads the stator core 20;

after the iron core assembling blocks are assembled into the round stator iron core 20, the auxiliary installation device 30 removes the positioning of the tooling plate 10, and the tooling plate 10 continues to operate along with the conveying line 80;

when the tooling plate 10 flows into a station where the molding press-fitting device 40 is located, the molding press-fitting device 40 positions the tooling plate 10 and presses the stator cores 20 to the same height;

after the press fitting is qualified, the forming press fitting device 40 removes the positioning of the tooling plate 10, and the tooling plate 10 continues to operate along with the conveying line 80;

when the tooling plate 10 flows into a station where a forming and shaping device 50 is located, the forming and shaping device 50 positions the tooling plate 10, shapes the stator core 20 and adjusts the roundness of the stator core 20;

after the shaping is completed, the shaping and shaping device 50 removes the positioning of the tooling plate 10, and the tooling plate 10 continues to run along with the conveying line 80;

when the tooling plate 10 flows into a station where a welding device 60 is located, the welding device 60 positions the tooling plate 10 and welds the stator core 20;

when all the assembling seams of the stator core 20 are welded, the welding device 60 removes the positioning of the tooling plate 10, and the tooling plate 10 continues to operate along with the conveying line 80;

when the tooling plate 10 flows into the station where the blanking device 70 is located, the blanking device 70 takes down the stator core 20 on the tooling plate 10.

The stator core assembling method of the embodiment realizes automation of stator core 20 assembling, improves work efficiency, reduces labor intensity, reduces labor cost, avoids the phenomena of out-of-roundness, core warping deformation, skew and the like of products, improves product yield, and enables stator core 20 assembling to be more scientific and efficient.

Specifically, when the stator core assembling method according to the present embodiment is used, the auxiliary mounting device 30, the molding press-fitting device 40, the molding shaping device 50, the welding device 60, and the blanking device 70 are mounted in parallel with the conveyor line 80 to form corresponding stations, and the tooling plate 10 is placed on the conveyor line 80 and transferred to each station along with the conveyor line 80 to perform a corresponding process.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the first feature may be directly connected to the second feature or may be indirectly connected to the second feature through intervening media, and in the present invention, unless otherwise explicitly stated or limited, the first feature may be "on" or "under" the second feature in direct contact with the first or second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims

1. A stator core assembly system for assembling at least two core assembly blocks to form a stator core, comprising:

the tooling plate is used for loading the stator core;

the conveying line is used for conveying the tooling plate;

2. The stator core assembling system according to claim 1, wherein the conveyor line includes an operation line for conveying the tooling plate to different stations, and a return line for conveying the tooling plate back to the operation line; the auxiliary mounting device, the forming and press-fitting device, the forming and shaping device, the welding device and the blanking device are mounted along the operating line in parallel, and the auxiliary mounting device, the forming and press-fitting device, the forming and shaping device, the welding device and the blanking device are sequentially mounted along the conveying direction of the operating line.

3. The stator core assembly system of claim 1, wherein the operating wires and the return wires are arranged in an upper layer and a lower layer, the operating wires are arranged in an upper layer of the return wires, and the conveying direction of the operating wires is opposite to the conveying direction of the return wires.

4. The stator core assembly system of claim 3, further comprising a wire head lifting platform disposed at a first end of the conveyor line and a wire end lifting platform disposed at a second end of the conveyor line, the second end of the conveyor line being an end opposite the first end of the conveyor line.

5. The stator core assembly system of any one of claims 1-4, wherein the tooling plate includes a base plate and at least two sets of positioning members movably disposed on a first side of the base plate; the positioning assemblies are arranged at intervals in the circumferential direction, and the positioning assemblies comprise a first position and a second position; when the positioning assemblies are positioned at the first position, the diameter of a first circumference defined by at least two groups of positioning assemblies is a first diameter; when the positioning assemblies are positioned at the second position, the diameter of a second circumference defined by at least two groups of the positioning assemblies is a second diameter; the first diameter is smaller than the second diameter.

6. The stator core assembling system according to any one of claims 1 to 4, wherein the molding press-fitting device comprises a press-fitting tool which contacts with the stator core and presses down the stator core, a servo module which drives the press-fitting tool to ascend and descend, and a sensor assembly which is arranged in the press-fitting tool and is electrically connected with the servo module.

7. The stator core assembling system according to any one of claims 1 to 4, wherein the shaping and shaping device comprises a shaping mechanism and a limiting mechanism matched with the shaping mechanism, and the stator core is positioned between the shaping mechanism and the limiting mechanism; the shaping mechanism comprises a first state and a second state, and when the shaping mechanism is in the first state, the shaping mechanism applies pressure to the stator iron core to shape the stator iron core; and when the stator core is in the second state, no acting force exists between the shaping mechanism and the stator core.

8. The stator core assembly system according to any one of claims 1 to 4, wherein the welding device comprises a welding mechanism, the welding mechanism comprises a welding bracket, a welding gun assembly connected with the welding bracket, and a lifting assembly arranged on the welding bracket, and the welding gun assembly is connected with the welding bracket through the lifting assembly.

9. The stator core assembling system according to any one of claims 1 to 4, wherein the blanking device comprises a six-axis robot disposed at one side of the conveying line, and a clamping jaw assembly connected to the six-axis robot and used for clamping the stator core.

10. A stator core assembling method is characterized by comprising the following steps:

placing the tooling plate on a conveying line;