CN219124073U - Stator core manufacturing tool - Google Patents

Abstract

The utility model provides a stator core manufacturing tool, and relates to the field of motor stator core manufacturing technology; the stator core manufacturing tool comprises a laminating device, wherein the laminating device comprises a bottom plate, a top plate and a laminating body positioned between the bottom plate and the top plate, the bottom of the laminating body is provided with a bottom limiting structure for radially limiting the bottom of the laminating body and the bottom of the bottom plate, and the top of the laminating body is provided with a top limiting structure for radially limiting the top of the laminating body and the top of the top plate; the utility model has the advantages of avoiding radial deformation caused by hoisting, turning over and transferring among working procedures in the manufacturing process of the stator core of the large motor, ensuring the manufacturing quality of the motor and improving the manufacturing qualification rate of the large motor.

Description

Stator core manufacturing tool

Technical Field

The utility model relates to the technical field of motor stator core manufacturing, in particular to a stator core manufacturing tool.

Background

The stator core is a component part of a stator of the motor for providing a magnetic circuit for the motor. The stator core generally includes a lower clamping ring, a lower tooth clamping plate, a stator punching sheet, an upper tooth clamping plate, and an upper clamping ring. When the stator core is manufactured, the components are sequentially stacked one by one outside the stator core manufacturing tool, and are fixed by using a tension bolt or welding.

The existing lamination tool for the stator core comprises a bottom plate, a lamination body and a top plate. The bottom of the lamination body is fixedly connected with the bottom plate through a bolt, and the top of the lamination body is fixedly connected with the top plate through a bolt. When the lamination tool is used for manufacturing the stator core, the lamination tool is placed below the hydraulic machine, the lower pressing ring, the lower tooth pressing plate, the plurality of stator punching sheets, the upper tooth pressing plate and the upper pressing ring are sequentially stacked outside the lamination body, and the hydraulic machine is started to laminate the stator core.

The stator core of the large motor is extremely easy to generate radial deformation in the horizontal wire inserting and paint dipping processes of tire withdrawal, hoisting and turning after lamination pressing due to the structural characteristics of large diameter, heavy weight and strict radial size requirement of the iron core, and the circumferential air gap uniformity of the stator and the rotor after motor assembly is affected, so that the electrical performance of the motor is affected.

Disclosure of Invention

The utility model aims to overcome the defect that a stator core is easy to deform when the stator core is manufactured in the prior art, and provides a stator core manufacturing tool.

The utility model solves the technical problems by the following technical scheme:

the stator core manufacturing tool comprises a laminating device, wherein the laminating device comprises a bottom plate, a top plate and a laminating body positioned between the bottom plate and the top plate, the periphery side of the laminating body is cylindrical, the top of the laminating body is fixedly connected with the top plate, the bottom of the laminating body is fixedly connected with the bottom plate,

The laminating device further comprises a bottom limiting structure, wherein the bottom limiting structure is used for limiting the bottom of the laminating body and the bottom plate along the radial direction of the laminating body, the bottom limiting structure comprises a first limiting concave part and a first limiting convex part which are oppositely arranged, one of the first limiting concave part and the first limiting convex part is arranged on the bottom plate, the other is positioned at the bottom of the laminating body, and the first limiting concave part is matched with the first limiting convex part;

the laminating device further comprises a top limiting structure, the top limiting structure is used for limiting the top of the laminating body and the top plate in the radial direction of the laminating body, the top limiting structure comprises a second limiting concave part and a second limiting convex part which are oppositely arranged, one of the second limiting concave part and the second limiting convex part is arranged on the top plate, the other is positioned at the top of the laminating body, and the second limiting concave part is matched with the second limiting convex part.

In the scheme, the lamination device is used for supporting the stator core when the stator core is pressed and assembled; when the stator iron core is pressed, the lower pressing ring, the lower tooth pressing plate, the plurality of stator punching sheets, the upper tooth pressing plate and the upper pressing ring are sequentially stacked on the bottom plate and sleeved outside the cylindrical stacked body, and the stacked body supports the stator iron core in the radial direction of the stacked body so as to press the stator iron core by the hydraulic press. The bottom limiting structure is used for limiting radial movement of the bottom of the laminated body relative to the bottom plate, and the top limiting structure is used for limiting radial movement of the top of the laminated body relative to the top plate.

In the bottom limiting structure, the first limiting concave part can be arranged on one of the upper side of the bottom plate and the bottom of the laminated body, the first limiting convex part can be arranged on the other of the bottom of the laminated body and the upper side of the bottom plate, and the first limiting concave part is matched with the first limiting convex part, namely, the first limiting convex part can be inserted into the first limiting concave part and is abutted with the side wall of the first limiting concave part, so that the first limiting convex part is limited in the first limiting concave part, and radial limiting of the bottom plate and the laminated body is realized.

In the top limit structure, the second limit concave portion may be provided on one of the lower side of the top plate and the upper portion of the stacked body, and the second limit convex portion may be provided on one of the top of the stacked body and the lower side of the top plate, in which no second limit concave portion is provided; the second limiting concave part is matched with the second limiting convex part, namely the second limiting convex part can be inserted into the second limiting concave part and is abutted against the side wall of the second limiting concave part, so that the second limiting convex part is limited in the second limiting concave part, and the radial limiting of the top plate and the laminated body is realized.

Therefore, the laminated body is limited by the bottom plate and the top plate in the radial direction, and is not easy to deform due to the radial acting force when the stator core is pressed, so that the stator core is not easy to deform in the radial direction when the stator core is pressed, and the machining precision and the yield of stator core manufacturing are improved.

Preferably, the first limiting concave part comprises a first spigot arranged on one side of the bottom plate facing the laminated body, the end part of one end of the laminated body facing the bottom plate forms a first limiting convex part, and the first spigot is matched with the outer peripheral side of the first limiting convex part.

In this scheme, the tip that the one end towards the bottom plate of the lamination body forms first spacing convex part, and first tang and first spacing convex part looks adaptation, the one end tip that the one end towards the bottom plate of the lamination body promptly can insert in the first tang, and the periphery side of the bottom of the lamination body offsets with the lateral wall of first tang to the lateral wall of first tang is spacing the lamination body in the radial of lamination body, makes the bottom of lamination body be difficult for along its radial outside removal.

Preferably, the laminated body is cylindrical and hollow in the inside, the bottom limiting structure further comprises a first limiting part, the first limiting part is located at the bottom of the laminated body, and the first limiting part is used for radially limiting the bottom of the laminated body at the inner side of the laminated body.

In this scheme, the bottom of the lamination body is restricted along the radial inboard removal of lamination body with respect to the bottom plate by first locating part.

Preferably, the first limiting part comprises an inner supporting plate arranged on the inner side of the bottom of the laminated body, and a third spigot matched with the inner peripheral side of the bottom of the laminated body is arranged on the outer peripheral side of the inner supporting plate.

In this scheme, first locating part sets up the inboard in the bottom of the lamination body, and the week side of the bottom of lamination body and third tang looks adaptation promptly can insert in the third tang and the inner periphery side of the bottom of lamination body offsets with the lateral wall of third tang. The inner stay plate thus supports the stack at the inner side of the stack, restricting movement of the stack in the radial direction thereof.

Preferably, the first limiting part comprises a first positioning pin, and the first positioning pin penetrates through the laminated body and the bottom plate along the side wall direction of the laminated body.

In this scheme, the first locating pin wears to establish in the folded body and bottom plate along folded body's lateral wall direction, and here lateral wall direction refers to the direction that is parallel to folded body's axial. Compared with the matching of the bolt and the bolt hole, when the first positioning pin is used for limiting the laminated body and the bottom plate, the first positioning pin can be attached to the wall of the preset hole arranged on the first positioning pin, when the laminated body is subjected to radial shearing force, the first positioning pin is not easy to deviate along the radial direction of the laminated body relative to the laminated body or the bottom plate, so that the limiting precision is improved, and the laminated body and the stator core are not easy to deform along the radial direction of the laminated body; and meanwhile, the positioning pin is adopted for limiting, the structure is simple, the disassembly and the assembly are convenient, and the cost is low.

Preferably, the first limiting concave part comprises a first groove, the first limiting convex part comprises a first convex rib, one of the first groove and the first convex rib is arranged on the upper side of the bottom plate, the other is arranged at the bottom of the laminated body, and when the first limiting concave part and the first limiting convex part are mutually matched, the first convex rib is embedded in the first groove.

In this aspect, the first groove may be provided on one of the upper side of the bottom plate and the bottom of the laminated body, the first rib may be provided on the other of the bottom of the laminated body and the upper side of the bottom plate, and the first rib is embedded in the first groove so that the first rib is limited in the first groove in the radial direction of the bottom plate, so that the laminated body is not likely to be biased radially inward or radially outward relative to the bottom plate.

Preferably, the laminated body is cylindrical and hollow in the inside, the second limiting concave part comprises a second spigot, the second spigot is arranged on one side of the top plate facing the laminated body, the end part of the laminated body facing one end of the top plate forms a second limiting convex part, and the second spigot is matched with the inner edge of the second limiting convex part.

In this scheme, the tip that the lamination body was towards one end of roof forms the spacing convex part of second, and the spacing convex part looks adaptation of second tang second, the tip that the one end towards the roof of lamination body promptly can insert in the second tang, and the inner periphery side at the top of lamination body offsets with the lateral wall of second tang to the lateral wall of second tang is spacing lamination body in the radial direction of lamination body, makes the top of lamination body be difficult for along its radial inboard removal.

Preferably, the top limiting structure further comprises a second limiting member arranged at the top of the laminated body, and the second limiting member is used for limiting the movement of the top of the laminated body along the radial outer side of the laminated body.

In this scheme, the second locating part restricts the roof of the lamination body and moves towards outside along radial direction relative to the roof.

Preferably, the second limiting concave part comprises a second groove, the second limiting convex part comprises a second convex rib, one of the second groove and the second convex rib is arranged on the lower side of the top plate, the other is arranged on the top of the laminated body, and when the second concave part and the second convex part are mutually matched, the second convex rib is embedded in the second groove.

In this scheme, the second recess can set up on the two of the downside of roof and the top of the stack body, and the second bead can set up on the another of the downside of the top of stack body and roof, and the second bead inlays and establishes in the second recess to the radial limit of second bead along the roof is in the second recess, makes the stack body be difficult for taking place along its radially inwards or outwards skew relatively the roof.

Preferably, the bottom plate is in a circular ring shape, the section of the first convex rib is trapezoid, and the first convex rib is in a continuous ring shape along the circumferential direction of the laminated body or the circumferential direction of the bottom plate;

and/or the top plate is in a circular ring shape, the section of the second convex rib is trapezoid, and the second convex rib is in a continuous ring shape along the circumferential direction of the laminated body or the circumferential direction of the top plate.

In the scheme, the cross section of the first rib is trapezoid and/or the cross section of the second rib is trapezoid, and as the first groove is matched with the first rib and the second groove is matched with the second rib, the cross section of the first groove is trapezoid and/or the cross section of the second groove is trapezoid, so that the first rib is convenient to insert into the first groove and/or the second rib to insert into the second groove, and meanwhile, the radial acting force of the groove wall of the first groove on the first rib can be decomposed into an acting force along the side face of the first rib and an acting force perpendicular to the side face of the first rib, so that the capability of bearing the radial acting force along the bottom plate with the first rib is enhanced; and/or the radial force of the second groove on the second rib can be decomposed into a force along the side surface of the second rib and a force perpendicular to the side surface of the second rib, thereby enhancing the ability of the second rib to withstand the radial force along the top plate; the first rib and/or the second rib are annular, so that the first rib and/or the second rib can be conveniently processed, and meanwhile, acting force between the bottom plate and the laminated body can be dispersed more stably and uniformly, and/or acting force between the top plate and the laminated body can be dispersed more uniformly.

Preferably, the lamination body is provided with a plurality of lightening holes along the radial direction thereof, and the lightening holes are arranged along the circumferential direction of the lamination body.

In this scheme, the lightening hole of seting up on the lamination body can reduce the consumptive material of lamination body, reduces the weight of lamination body, reduces simultaneously and laminates the area of contact of lamination body and stator core to reduce the friction between lamination body and the stator core.

Preferably, the laminated body comprises at least two laminated petals with a fan-shaped horizontal section, the laminated petals are arranged along the circumferential direction of the laminated body, the laminated petals are detachably combined to form the laminated body, and a gap exists between two adjacent laminated petals.

In this embodiment, the laminated body includes a plurality of detachable laminated petals having a fan-shaped horizontal cross section, where the horizontal plane refers to a plane perpendicular to the axial direction of the laminated body. Therefore, when the laminated body is dismounted, the laminated petals can be dismounted one by one, and compared with the whole laminated body, the operation space is more abundant when the single laminated petal is dismounted, thereby facilitating the dismounting of the laminated body; gaps exist between two adjacent lamination petals, so that extrusion and collision are difficult to occur between the lamination petals when the lamination petals are disassembled, and meanwhile, when the lamination petals are disassembled, the lamination petals can retract inwards along the radial direction, so that gaps are formed between the lamination petals and the stator core, the lamination petals are difficult to rub and collide with the stator core when the lamination petals are disassembled, and the stator core is prevented from deforming when the lamination body is disassembled.

Preferably, a first hanging ring hole for hanging ring installation is formed in the top plate.

In this scheme, when need hoist and mount other positions with the stator core that the pressure equipment is good, can install rings in first lifting ring hole, the crane effect is simultaneously hoisted stator core and lamination device on the roof during the hoist and mount, has avoided direct hoist and mount stator core to the damage that stator core caused.

Preferably, the stator core manufacturing fixture further comprises an iron core support for supporting the stator core, the iron core support is annular, the inner diameter of the iron core support is larger than the outer diameter of the bottom plate, the inner diameter of the iron core support is smaller than the outer diameter of the stator core, and a second hanging ring hole for hanging ring installation is formed in the iron core support.

In the scheme, the iron core support is used for supporting the stator iron core laminated by the lamination device so as to facilitate the disassembly of the lamination device and the coil inserting of the stator iron core; after the stator core is pressed, the stator core and the lamination device are hoisted to the core support simultaneously. The inner diameter of the iron core support is smaller than the outer diameter of the stator iron core so as to support the stator iron core; the inner diameter of the iron core support is larger than the outer diameter of the bottom plate, so that the bottom plate falls into the iron core support after the lamination device is disassembled, and the bottom plate is convenient to separate from the stator iron core and the iron core support; after the coil inserting is completed, a hanging ring is arranged in the second hanging ring hole, a crane acts on the iron core support to simultaneously hoist the iron core support and the stator iron core to the next station for other processing steps, and the situation that the stator iron core is directly hoisted by the crane to damage the stator iron core is avoided.

The utility model has the positive progress effects that:

the stator core manufacturing tool comprises a laminating device, wherein the bottom of the laminating body is provided with a bottom limiting structure, the top of the laminating body is provided with a top limiting structure, the top limiting structure comprises a first limiting convex part and a first limiting concave part which are mutually matched, the top limiting structure comprises a second limiting convex part and a second limiting concave part which are mutually matched, the bottom of the laminating body is limited to move along the radial direction relative to a bottom plate through the matching of the first limiting convex part and the first limiting concave part, and the movement of the laminating body along the radial direction relative to a top plate is limited through the matching of the second limiting convex part and the second limiting concave part, so that the radial deflection is difficult to occur when the laminating body bears radial acting force, and the stator core is difficult to deform radially, and the manufacturing precision and the finished product qualification rate of the stator core are ensured.

Drawings

Fig. 1 is a schematic perspective view of a stacking device according to embodiment 1 of the present utility model.

Fig. 2 is a schematic vertical sectional view of the stacking device according to embodiment 1 of the present utility model.

Fig. 3 is a schematic horizontal sectional view of the lamination device of embodiment 1 of the present utility model.

Fig. 4 is a schematic vertical sectional structure of a stator core manufacturing tool according to embodiment 1 of the present utility model.

Fig. 5 is a schematic perspective view of the iron core support according to embodiment 1 of the present utility model.

Fig. 6 is an enlarged schematic view at a in fig. 4.

Fig. 7 is a schematic perspective view of a stacking device according to embodiment 2 of the present utility model.

Fig. 8 is a schematic view showing a vertical cross-sectional structure of a lamination device according to embodiment 3 of the present utility model.

Fig. 9 is a schematic perspective view of a core holder according to embodiment 7 of the present utility model.

Fig. 10 is a schematic structural diagram of a core support and a stator core after removing a lamination device according to an embodiment of the present utility model.

Fig. 11 is a schematic structural diagram of a stator core and a core support during wire insertion according to an embodiment of the present utility model.

Reference numerals illustrate:

lamination device 100

Bottom plate 110

Lamination body 120

Mounting edge 121

Lamination flap 122

Lightening holes 123

Top plate 130

First hanging ring hole 131

Bottom limit structure 140

First spigot 141

Inner support plate 142

Third spigot 143

First positioning pin 144

First groove 145

First rib 146

Top limit structure 150

Second spigot 151

Second positioning pin 152

Second groove 153

Second rib 154

Iron core support 200

Chassis 210

Second hanging ring hole 211

Support ring 220

Bolt connection hole 221

Flange 222

Reinforcing plate 230

First buttress 300

Second buttress 400

Stator core 500

Detailed Description

The utility model is further illustrated by means of examples which follow, without thereby restricting the scope of the utility model thereto.

Example 1

The embodiment discloses a stator core manufacturing tool, referring to fig. 1 and 2, a stator core lamination tool includes a lamination device 100. The lamination device 100 is used for supporting a stator core 500 (refer to fig. 5) for press-fitting the stator core 500 by a hydraulic press.

The lamination device 100 includes a bottom plate 110, a lamination body 120, and a top plate 130. The bottom plate 110 is used for vertically supporting the stator core 500; the lamination body 120 is fixedly disposed on the upper side of the base plate 110, and is used for radially supporting the stator core 500; the top plate 130 is fixedly connected to the top of the lamination body 120, and is used for improving the structural strength of the lamination device 100.

In this embodiment, the bottom plate 110 and the stacked body 120, and the top plate 130 and the stacked body 120 are all connected by bolts, so that the bottom plate 110, the stacked body 120 and the top plate 130 are convenient to assemble and disassemble. In other embodiments, the bottom plate 110 and the stacked body 120, and the top plate 130 and the stacked body 120 may be fixed in other suitable removable manners.

The bottom plate 110 and the top plate 130 are annular, and the outer periphery of the laminated body 120 is cylindrical. The bottom plate 110, the stacked body 120, and the top plate 130 are coaxially disposed. The inner diameter of the bottom plate 110 is smaller than the outer diameter of the stacked body 120 to ensure that the stacked body 120 can be fixedly placed on the upper side of the bottom plate 110, and the outer diameter of the top plate 130 is larger than the inner diameter of the stacked body 120 to ensure that the top plate 130 can be fixedly placed on the top of the stacked body 120.

Referring to fig. 1 and 2, the lamination device 100 is provided with a bottom limit structure 140 and a top limit structure 150. The bottom limiting structure 140 is located at the bottom of the stacked body 120 and is used for limiting the bottom of the stacked body 120 to move radially relative to the bottom plate 110; the top limiting structure 150 is located at the top of the stacked body 120, and is used for limiting the movement of the top of the stacked body 120 along the radial direction relative to the top plate 130.

The bottom limit structure 140 includes a first limit concave portion and a first limit convex portion disposed opposite to each other at the bottom of the stacked body 120 and the upper side of the bottom plate 110, respectively. Namely, the first limit concave part can be arranged at the bottom of the laminated body 120 or at the upper side of the bottom plate 110; the first limit protrusion is provided on one of the bottom of the stacked body 120 and the upper side of the bottom plate 110 where the first limit recess is not provided. The opposite arrangement here means that the first limit protrusion faces the opening of the first limit recess.

Specifically, in the present embodiment, the first limiting recess includes a first spigot 141 disposed on the upper side of the base plate 110, and an end of the stacked body 120 near one end of the base plate 110 forms a first limiting protrusion. The first spigot 141 is matched with the outer edge of the bottom of the laminated body 120, that is, the bottom end of the laminated body 120 can be inserted into the first spigot 141, the side wall of the first spigot 141 is located at the outer side of the laminated body 120, and the outer edge of the bottom of the laminated body 120 abuts against the side wall of the first spigot 141. The sidewall of the first spigot 141 thus radially restrains the laminated body 120 so that the bottom of the laminated body 120 is not easily moved radially outward.

The first spigot 141 penetrates through the inner side of the bottom plate 110 along the radial direction of the bottom plate 110, so that the first spigot 141 forms an opening on the inner peripheral side of the bottom plate 110, and the stacked body 120 can slide into the first spigot 141 from the inner side of the bottom plate 110, so that the stacked body 120 is convenient to be matched with the bottom plate 110.

In this embodiment, the first spigot 141 extends 360 ° in the circumferential direction of the base plate 110, so that a stepped portion is formed at the inner edge of the upper side of the base plate 110 to fit the outer edge of the bottom of the laminated body 120. In other embodiments, the first spigot 141 may have other shapes, and may be specifically designed according to the shape of the bottom of the stacked body 120.

Referring to fig. 2, the bottom limiting structure 140 further includes a first limiting member disposed at the bottom of the stacked body 120 for limiting the bottom of the stacked body 120 from deviating radially inward relative to the bottom plate 110, so that the first limiting member radially supports the stacked body 120 inside the bottom of the stacked body 120.

In this embodiment, the first limiting member includes an inner supporting plate 142, and the inner supporting plate 142 abuts against an inner edge of the bottom of the stacked body 120, so as to support the stacked body 120 on an inner side of the bottom of the stacked body 120, and limit the bottom of the stacked body 120 from being biased inward along the radial direction of the stacked body 120.

Specifically, in the present embodiment, the inner supporting plate 142 is an annular member, so as to reduce the material consumption and weight of the inner supporting plate 142 while ensuring uniform support of the inner side of the bottom of the stacked body 120.

Referring to fig. 2 and 3, a ring of mounting edges 121 are formed protruding radially inward from the inner periphery of the bottom of the stacked body 120. The outer periphery of the inner support plate 142 is provided with a circle of third spigot 143, the third spigot 143 penetrates the outer periphery side of the inner support plate 142 along the radial direction of the inner support plate 142, and the third spigot 143 is matched with the inner mounting edge 121 of the bottom of the laminated body 120. The fitting here means that the mounting edge 121 can be inserted into the third spigot 143, and the inner edge of the upper side of the mounting edge 121 abuts against the side wall of the third spigot 143. The inner stay 142 thus supports the stacked body 120 on the inner side of the stacked body 120, and restricts movement of the stacked body 120 toward the inner side in the radial direction thereof.

In this embodiment, the inner supporting plate 142 is fixed on the mounting edge 121 by bolts, so as to realize a fixed connection between the inner supporting plate 142 and the stacked body 120, and the inner supporting plate 142 is placed to move along the axial direction of the stacked body 120, and at the same time, the inner supporting plate 142 is convenient to be detached from the stacked body 120. In addition, in other embodiments, the inner support plate 142 may be fixedly connected to the stacked body 120 in other suitable manners.

Referring to fig. 2, the top limit structure 150 includes a second limit concave portion and a second limit convex portion disposed opposite to each other at the top of the stacked body 120 and the lower side of the top plate 130, respectively. That is, the second limit concave portion may be disposed at the top of the stacked body 120 or may be disposed at the lower side of the top plate 130; the second limit protrusion is provided on one of the top of the stacked body 120 and the underside of the top plate 130 where the second limit recess is not provided. The opposite arrangement here means that the second limit protrusion faces the opening of the second limit recess.

Specifically, in the present embodiment, the second limiting recess includes a second spigot 151 disposed on the lower side of the top plate 130, and an end of the stacked body 120 near one end of the top plate 130 forms a second limiting protrusion, that is, a top end of the stacked body 120. The second spigot 151 is matched with the inner edge of the top of the laminated body 120, that is, the top end of the laminated body 120 can be inserted into the second spigot 151, the side wall of the second spigot 151 is located at the inner side of the laminated body 120, and the inner edge of the top of the laminated body 120 abuts against the side wall of the second spigot 151. The sidewall of the second spigot 151 thus radially restrains the stacked body 120 so that the top of the stacked body 120 is not easily moved radially inward.

The second spigot 151 penetrates the outer side of the top plate 130 along the radial direction of the top plate 130, so that the second spigot 151 forms an opening on the outer peripheral side of the top plate 130, and the stacked body 120 can slide in/out of the second spigot 151 from the outer side of the top plate 130, so that the stacked body 120 can be matched with the top plate 130 conveniently.

In the present embodiment, the second spigot 151 extends one full turn in the circumferential direction of the top plate 130, so that a turn of stepped portion is formed at the outer edge of the lower side of the top plate 130 to fit the inner edge of the top of the stacked body 120. In addition, in other embodiments, the second spigot 151 may have other suitable shapes, and may be specifically designed according to the shape of the top of the stacked body 120.

Therefore, the lamination body 120 is limited by the bottom plate 110 and the top plate 130 in the radial direction, and when the stator core 500 is pressed, the lamination body 120 is not easy to deform due to the radial acting force, so that the stator core 500 is not easy to deform in the radial direction during the pressing.

Referring to fig. 1 and 2, the top limiting structure 150 further includes a second limiting member disposed on the top of the stacked body 120, for limiting a radial offset of the top of the stacked body 120 relative to the top plate 130.

In this embodiment, the second limiting member includes a second positioning pin 152, and the second positioning pin 152 is vertically penetrating through the top plate 130 and the top of the stacked body 120 at the same time to bear the radial force of the stacked body 120. When the top of the stacked body 120 receives the radially inward force, the sidewalls of the second positioning pin 152 and the second spigot 151 simultaneously support the top of the stacked body 120; when the top of the stacked body 120 receives a force applied radially outward, the second positioning pin 152 supports the bottom of the stacked body 120, so as to prevent the stacked body 120 from being biased radially outward relative to the top plate 130. And meanwhile, the positioning pin is adopted for limiting, the structure is simple, the disassembly and the assembly are convenient, and the cost is low.

In this embodiment, the second positioning pin 152 is a cone-tail pin, so as to facilitate the installation and the removal of the second positioning pin 152.

Referring to fig. 1 to 3, the lamination body 120 includes at least two lamination flaps 122 in a fan shape arranged along a circumferential direction of the lamination body 120, and the lamination flaps 122 are detachably disposed, so that when the lamination body 120 is disassembled, the lamination flaps 122 can be disassembled one by one, and compared with the whole lamination body 120, an operation space is more abundant when a single lamination flap 122 is disassembled, and the assembly and the disassembly of the lamination body 120 are facilitated.

Each lamination flap 122 is provided with an arc-shaped rib protruding inward in the radial direction of the lamination body 120, and the ribs on each lamination flap 122 are not connected, so that the ribs of the lamination flaps 122 form a mounting edge 121 on the lamination body 120.

In this embodiment, the lamination 120 is specifically shown as including three lamination flaps 122, and the three lamination flaps 122 can be spliced to form the annular lamination 120. In addition, in other embodiments, the number of lamination flaps 122 can be other suitable values.

In this embodiment, two second positioning pins 152 are disposed at intervals at the bottom of each lamination flap 122, so that the second positioning pins 152 are uniformly disposed, and the radial limiting effect of the second positioning pins 152 on the lamination body 120 is more stable. In other embodiments, the second alignment pins 152 may be arranged in other suitable numbers and arrangements.

Wherein, there is the clearance between the one side that two adjacent lamination leaves 122 are close to each other, namely lamination leaves 122 are along lamination body 120's circumference interval arrangement to be difficult for taking place to extrude and collide between lamination leaves 122 when dismouting lamination leaves 122, simultaneously when dismantling lamination leaves 122, lamination leaves 122 can radially inwards give way along lamination body 120, thereby form the clearance between lamination leaves 122 and stator core 500, make lamination leaves 122 difficult for with stator core 500 friction and collision when dismantling.

Referring to fig. 1 to 3, each lamination flap 122 is provided with a plurality of lightening holes 123 in the radial direction of the lamination body 120, and the lightening holes 123 penetrate through the inner and outer sides of the lamination flaps 122. Thereby reducing the consumable material of the lamination body 120, reducing the weight of the lamination body 120, and simultaneously reducing the contact area of the lamination body 120 and the stator core 500, thereby reducing the friction between the lamination body 120 and the stator core 500.

In this embodiment, the number of the lightening holes 123 on each lamination flap 122 is the same and is uniformly arranged, so that the lightening holes 123 are uniformly arranged along the circumferential direction of the lamination body 120, and therefore, the mass distribution of the lamination body 120 is uniform, and the lamination device 100 is more stable when being lifted.

In addition, in the present embodiment, the bolts for connecting the stacked body 120 and the bottom plate 110 are connected to the bottom plate 110 from inside the weight-reducing holes 123 downward through the bottom wall of the weight-reducing holes 123, and the bolts for connecting the stacked body 120 and the top plate 130 are connected to the top plate 130 from inside the weight-reducing holes 123 upward through the top wall of the weight-reducing holes 123. Thus, the provision of the lightening holes 123 also provides an operating space for the installation of bolts, facilitating the connection of the lamination body 120 with the top plate 130 and/or the lamination body 120 with the bottom plate 110.

Referring to fig. 1, a first hanging ring hole 131 is formed in the top plate 130. When the pressed stator core 500 needs to be hoisted to other positions, a hoisting ring can be installed in the first hoisting ring hole 131, and a crane acts on the top plate 130 to hoist the stator core 500 and the laminating device 100 simultaneously during hoisting, so that damage to the stator core 500 caused by directly hoisting the stator core 500 is avoided.

Referring to fig. 4 to 6, the stator core manufacturing tool further includes a core holder 200. The core holder 200 has a ring shape for supporting the stator core 500 in the wire insertion process.

Wherein the core holder 200 includes a chassis 210 and a support ring 220 integrally formed. The chassis 210 and the support ring 220 are both annular. The chassis 210 is coaxially sleeved at the bottom of the outer periphery of the supporting ring 220, so as to increase the bottom area of the core support 200, and make the core support 200 more stable when placed. The support ring 220 serves to support the stator core 500.

Wherein, the inner diameter of the supporting ring 220 is larger than the outer diameter of the bottom plate 110, and the inner diameter of the supporting ring 220 is smaller than the outer diameter of the pressing ring of the stator core 500, so as to support the stator core 500, and meanwhile, after the lamination device 100 is disassembled, the bottom plate 110 falls into the stator supporting ring 220, so that the bottom plate 110 is separated from the stator core 500 and the core support 200.

Specifically, a bolt connection hole 221 is formed at the top of the support ring 220, and the support ring 220 and the stator core 500 are fixedly connected by bolts passing through the bolt connection hole 221.

The stator core 500 is provided with the second hanging ring hole 211, so that after the coil inserting is completed, hanging rings are installed in the second hanging ring hole 211, and a crane acts on the iron core support 200 to simultaneously hoist the iron core support 200 and the stator core 500 to the next station for other processing steps, so that the stator core 500 is prevented from being damaged by directly hoisting the stator core 500 by the crane. The present embodiment is specifically shown in the form that the second suspension ring hole 211 is provided at the upper side of the chassis 210.

Example 2

Referring to fig. 7, a stator core manufacturing tool of the present embodiment is substantially the same as that of embodiment 1, and is different in that:

in this embodiment, the first limiting member includes a first positioning pin 144. The first positioning pins 144 are located inside the stacked body 120 and vertically penetrate through the mounting edge 121 and the bottom plate 110 of the stacked body 120 at the same time. The vertical direction herein refers to a direction parallel to the axial direction of the stacked body 120. Therefore, when the lamination body 120 receives radial shearing force, the first positioning pin 144 can bear radial load of the lamination body 120, so that the lamination body 120 is not easy to move radially relative to the bottom plate 110; and meanwhile, the positioning pin is adopted for limiting, the structure is simple, the disassembly and the assembly are convenient, and the cost is low.

Specifically, in this embodiment, two first positioning pins 144 are disposed at intervals on the bottom of each lamination flap 122. Thereby, the first positioning pins 144 are uniformly arranged, and the radial limiting effect of the first positioning pins 144 on the laminated body 120 is more stable. In other embodiments, the first alignment pins 144 may be arranged in other suitable numbers and arrangements.

In this embodiment, the first positioning pin 144 is a cone-tail pin, so as to facilitate the installation and the removal of the first positioning pin 144.

Example 3

Referring to fig. 8, a stator core manufacturing tool of the present embodiment is substantially the same as that of embodiment 1, and is different in that:

in this embodiment, the first limiting member and/or the second limiting member need not be provided. The first limiting recess includes a first recess 145 and the first limiting protrusion includes a first rib 146. The first grooves 145 and the first ribs 146 are oppositely disposed at the upper side of the base plate 110 and the bottom of the stack 120, respectively, i.e., the first grooves 145 may be disposed at one of the upper side of the base plate 110 and the bottom of the stack 120, and the first ribs 146 may be disposed at one of the bottom of the stack 120 and the upper side of the base plate 110, where the first grooves 145 are not disposed.

The first rib 146 is matched with the first groove 145, that is, the first rib 146 and the first groove 145 have the same shape and size, and the first rib 146 is embedded in the first groove 145 and abuts against two opposite side groove walls of the first groove 145.

Thus, the first rib 146 is limited in the first groove 145 along the radial direction of the bottom plate 110, so that the stacked body 120 is not easy to deviate radially inwards or outwards relative to the bottom plate 110.

The second limiting recess includes a second groove 153, the second limiting protrusion includes a second protrusion 154, the second groove 153 and the second protrusion 154 are disposed opposite to each other on the lower side of the top plate 130 and the upper side of the stacked body 120, i.e., the second groove 153 may be disposed on one of the lower side of the top plate 130 and the top of the stacked body 120, and the second protrusion 154 may be disposed on one of the top of the stacked body 120 and the lower side of the top plate 130, where the second groove 153 is not disposed.

The second rib 154 is embedded in the second groove 153 and abuts against two opposite sidewalls of the second groove 153. The second rib 154 is thus retained in the second groove 153 in the radial direction of the top plate 130, so that the stacked body 120 is not likely to be biased radially inward or radially outward with respect to the top plate 130.

In this embodiment, the cross section of the first rib 146 is trapezoidal and/or the cross section of the second rib 154 is trapezoidal, the cross section of the first groove 145 is trapezoidal and/or the cross section of the second groove 153 is trapezoidal, so that the first rib 146 is inserted into the first groove 145 and/or the second rib 154 is inserted into the second groove 153. At the same time, the radial force of the groove wall of the first groove 145 on the first rib 146 can be decomposed into a force along the side of the first rib 146 and a force perpendicular to the side of the first rib 146, thereby enhancing the ability of the first rib 146 to withstand the radial force along the bottom plate 110; and/or the radial force of the second groove 153 on the second rib 154 can be decomposed into a force along the side of the second rib 154 and a force perpendicular to the side of the second rib 154, thereby enhancing the ability of the second rib 154 to withstand the radial force along the top plate 130.

Example 4

The stator core manufacturing tooling of the present embodiment is substantially the same as that of embodiment 1, and is different in that:

in this embodiment, the bottom limiting structure 140 is the same as that of embodiment 1, and the top limiting structure 150 is the same as that of embodiment 3.

Example 5

The stator core manufacturing tooling of the present embodiment is substantially the same as that of embodiment 1, and is different in that:

in this embodiment, the bottom limiting structure 140 is the same as that of embodiment 2, and the top limiting structure 150 is the same as that of embodiment 3.

Example 6

The stator core manufacturing tooling of the present embodiment is substantially the same as that of embodiment 1, and is different in that:

in this embodiment, the bottom limiting structure 140 is the same as that of embodiment 3, and the top limiting structure 150 is the same as that of embodiment 1.

Example 7

Referring to fig. 9, a stator core manufacturing tool of the present embodiment is substantially the same as that of embodiment 1, except that:

in this embodiment, a rim 222 is provided on the outer edge of the top of the supporting ring 220, and the rim 222 is located outside the bolt connection hole 221. A spigot is formed between the flange 222 and the top of the support ring 220. Thereby facilitating the positioning and placement of the stator core 500, and simultaneously, the ribs 222 radially limit the stator core 500 at the periphery of the stator core 500, thereby avoiding radial movement of the stator core 500 in the wire embedding process.

In this embodiment, the core support 200 further includes a plurality of reinforcing plates 230, where the reinforcing plates 230 are fixedly connected between the ribs 222 and the chassis 210, and are used to support the tops of the ribs 222 and the supporting rings 220, so as to improve the structural strength of the core support 200.

Example 8

The stator core manufacturing tooling of the present embodiment is substantially the same as that of embodiment 1, and is different in that:

in this embodiment, the lamination device 100 is the same as in embodiment 2, and the core holder 200 is the same as in embodiment 7.

Example 9

The stator core manufacturing tooling of the present embodiment is substantially the same as that of embodiment 1, and is different in that:

in this embodiment, the lamination device 100 is the same as in embodiment 3, and the core holder 200 is the same as in embodiment 7.

Example 10

The stator core manufacturing tooling of the present embodiment is substantially the same as that of embodiment 1, and is different in that:

in this embodiment, the lamination device 100 is the same as in embodiment 4, and the core holder 200 is the same as in embodiment 7.

Example 11

The stator core manufacturing tooling of the present embodiment is substantially the same as that of embodiment 1, and is different in that:

in this embodiment, the lamination device 100 is the same as in embodiment 5, and the core holder 200 is the same as in embodiment 7.

Example 12

The stator core manufacturing tooling of the present embodiment is substantially the same as that of embodiment 1, and is different in that:

in this embodiment, the lamination device 100 is the same as in embodiment 6, and the core holder 200 is the same as in embodiment 7.

Example 13

Referring to fig. 1 to 11, this embodiment discloses a method for manufacturing a stator core, which is implemented by using the stator core manufacturing tool in the above embodiment.

Specifically, taking the stator core manufacturing tool in embodiment 1 as an example, the stator core manufacturing method includes the following steps:

s1, laminating and press-fitting a stator core 500;

step S1 comprises the steps of:

step S11, sequentially stacking a lower pressing ring, a lower stator tooth pressing plate, a plurality of stator punching sheets, an upper stator tooth pressing plate and an upper pressing ring on a bottom plate 110;

step S12, compacting the stator core 500 by using a hydraulic press;

step S13, fixedly connecting the stator core 500 by using a connecting piece;

the connecting piece is a rib plate, the length direction of the rib plate is consistent with the axial direction of the stator core 500, and the rib plate is fixed with the stator core 500 through welding. Therefore, the rib plates fix the pressed lower pressing ring, the lower stator tooth pressing plate, the plurality of stator punching sheets, the upper stator tooth pressing plate and the upper pressing ring into a whole. In other embodiments, the connector may be a bolt or other suitable component.

And S14, exiting the hydraulic machine.

When the stator core 500 is pressed, the lower pressing ring, the lower stator tooth pressing plate, the plurality of stator punching sheets, the upper stator tooth pressing plate and the upper pressing ring are sequentially stacked on the bottom plate 110 and sleeved outside the stacked body 120, the stacked device 100 supports the stator core 500 for pressing by a hydraulic machine, the pressed state of the hydraulic machine is kept after the pressing, the stator core 500 is fixed by a connecting piece, the thickness of the stator core 500 is kept when the stator core is pressed, and then the hydraulic machine is withdrawn for the next operation; in this process, the lamination body 120 radially supports the stator core 500, and the top limit structure 150 and the bottom limit structure 140 support the lamination body 120, so that the lamination body 120 can bear a larger radial force, and the stator core 500 is not easy to deviate radially, thereby improving the qualification rate of the stator core 500.

S2, a crane hooks a hanging ring arranged on the top plate 130, and vertically hangs the stator core 500 and the lamination device 100 to a processing machine tool for machining;

step S2 includes the steps of:

s21, a crane hooks a hanging ring arranged on the top plate 130, and simultaneously lifts the lamination device 100 and the stator core 500, transfers the lamination device and the stator core 500 to a machine tool workbench for alignment and clamping;

Step S22, machining the stator core 500 on a machine tool;

step S23, the lamination device 100 and the processed stator core 500 exit the machine tool.

When the stator core 500 is hoisted to a machine tool workbench for machining, a crane acts on the top plate 130 of the laminating device 100, so that the stator core 500 deformation caused by the direct hoisting of the stator core 500 by the crane is avoided.

Step S3, a crane hooks a hanging ring arranged on the top plate 130, and vertically hangs the stator core 500 and the lamination device 100 and is vertically arranged on the core support 200;

step S3 includes the steps of:

step S31, installing hanging rings in the first hanging ring holes 131, hooking the hanging rings installed on the top plate 130 by using a crane, and transferring the vertical lifting lamination device 100 and the stator iron core 500 to the iron core support 200;

step S32, the crane lowers the lamination device 100 and the stator core 500, and the stator core 500 is abutted above the core support 200.

Therefore, when the stator core 500 is hoisted to the core support 200, the crane acts on the top plate 130 of the lamination device 100, and the damage of the stator core 500 caused by the direct hoisting of the stator core 500 by the crane is avoided.

Wherein the core holder 200 is provided at the center thereof with a first abutment 300. When the stator core 500 is placed on the core holder 200, the first buttresses 300 support the lower side of the bottom plate 110, thereby making the stator core 500 less likely to deform under the action of its own weight.

Step S33, fixing the stator core 500 to the support ring 220 using bolts.

Step S4, disassembling the laminating device 100;

step S4 includes the steps of:

step S41, removing bolts between the top plate 130 and the laminated body 120, and taking out the top plate 130;

step S42, detaching bolts between the bottom plate 110 and the laminated body 120; pushing lamination flap 122 inward in the radial direction of lamination body 120, so that lamination flap 122 is separated from the inner wall of stator core 500, so that a gap exists between lamination flap 122 and the inner wall of stator core 500;

step S43, repeating step S42 until all lamination flaps 122 are separated from the inner wall of the stator core 500;

step S44, installing hanging rings in the second hanging ring holes 211, hooking the hanging rings installed on the iron core support 200 by a crane, and hanging the stator iron core 500 and the iron core support 200 away from the first buttress 300 by the vertical hanging iron core support 200 and the stator iron core 500;

thus, after the core support 200 and the stator core 500 leave the first abutment 300, the lamination body 120 and the base plate 110 remain on the first abutment, and separation of the lamination device 100 and the stator core 500 is achieved. In this process, since the lamination flaps 122 are separated from the inner wall of the stator core 500, the stator core 500 is not easily deformed by friction or collision with the lamination flaps 122 when the stator core 500 is lifted.

S5, inserting wires on the stator core 500;

a second abutment 400 is provided at a position where the wire insertion is performed, and the stator core 500 and the core holder 200 are vertically hung on the second abutment 400.

The stator core 500 adopts a vertical coil inserting mode, namely, the axis of the stator core 500 is vertical relative to the horizontal plane, and the stator core 500 does not need to be laid down in the process of hoisting the stator core 500 relative to the horizontal coil inserting mode (namely, the axial direction of the stator core 500 is parallel to the horizontal direction), so that the probability of deformation of the stator core 500 in the hoisting process is reduced; meanwhile, when the horizontal wire embedding is adopted, the supporting area of the stator core 500 is only provided with one wire on the periphery side; and when the vertical wire embedding is adopted, the supporting area of the stator core 500 is the bottom surface of the stator core 500, so that the supporting area of the stator core 500 is increased, and the probability of deformation of the stator core 500 due to dead weight during wire embedding is reduced.

And S6, hoisting the stator iron core 500 and the iron core support 200 for paint dipping.

Step S6 includes the steps of:

step S61, a crane hooks a hanging ring arranged on the iron core support 200, and vertically lifts the iron core support 200 and the stator iron core 500 and transfers the iron core support and the stator iron core 500 into a paint dipping furnace;

step S62, paint dipping is performed on the stator core 500 and the core support 200 at the same time.

When the stator core 500 is hoisted to be impregnated, the crane acts on the core support 200, and simultaneously the core support 200 and the stator core 500 are hoisted to be impregnated, so that the stator core 500 deformation caused by the fact that the crane directly hoistes the stator core 500 is avoided.

While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the utility model, but such changes and modifications fall within the scope of the utility model.

Claims (14)

1. The stator core manufacturing tool comprises a laminating device, wherein the laminating device comprises a bottom plate, a top plate and a laminating body positioned between the bottom plate and the top plate, the periphery side of the laminating body is cylindrical, the top of the laminating body is fixedly connected with the top plate, the bottom of the laminating body is fixedly connected with the bottom plate,

the laminating device further comprises a bottom limiting structure, wherein the bottom limiting structure is used for limiting the bottom of the laminating body and the bottom plate along the radial direction of the laminating body, the bottom limiting structure comprises a first limiting concave part and a first limiting convex part which are oppositely arranged, one of the first limiting concave part and the first limiting convex part is arranged on the bottom plate, the other is positioned at the bottom of the laminating body, and the first limiting concave part is matched with the first limiting convex part;

The laminating device further comprises a top limiting structure, the top limiting structure is used for limiting the top of the laminating body and the top plate in the radial direction of the laminating body, the top limiting structure comprises a second limiting concave part and a second limiting convex part which are oppositely arranged, one of the second limiting concave part and the second limiting convex part is arranged on the top plate, the other is positioned at the top of the laminating body, and the second limiting concave part is matched with the second limiting convex part.

2. The stator core manufacturing tooling of claim 1, wherein the first limit recess includes a first spigot that is provided on a side of the bottom plate facing the lamination body, the lamination body forms the first limit protrusion toward an end of one end of the bottom plate, and the first spigot is adapted to an outer peripheral side of the first limit protrusion.

3. The stator core manufacturing tooling of claim 2, wherein the lamination body is cylindrical with a hollow interior, the bottom limiting structure further comprises a first limiting member, the first limiting member is located at the bottom of the lamination body, and the first limiting member is used for radially limiting the bottom of the lamination body at the inner side of the lamination body.

4. The stator core manufacturing tool of claim 3, wherein the first limiting member includes an inner stay plate disposed inside the bottom of the laminated body, and a third spigot fitted to an inner peripheral side of the bottom of the laminated body is disposed on an outer peripheral side of the inner stay plate.

5. The stator core manufacturing tool of claim 3, wherein the first limiting member includes a first positioning pin, and the first positioning pin is disposed along a sidewall direction of the lamination body in a penetrating manner and penetrates through the lamination body and the bottom plate.

6. The stator core manufacturing tool of claim 1, wherein the first limiting recess includes a first groove, the first limiting protrusion includes a first rib, one of the first groove and the first rib is disposed on the upper side of the bottom plate, the other is disposed on the bottom of the laminated body, and the first rib is embedded in the first groove when the first limiting recess and the first limiting protrusion are mutually matched.

7. The stator core manufacturing tooling of claim 1, wherein the lamination body is cylindrical with a hollow interior, the second limit concave portion comprises a second spigot, the second spigot is formed on one side of the top plate facing the lamination body, the end of the lamination body facing one end of the top plate forms a second limit convex portion, and the second spigot is matched with an inner edge of the second limit convex portion.

8. The stator core manufacturing tooling of claim 7, wherein the top limit structure further comprises a second limit member disposed at a top of the stack, the second limit member configured to limit movement of the top of the stack radially outward of the stack.

9. The stator core manufacturing tool of claim 1, wherein the second limiting recess includes a second groove, the second limiting protrusion includes a second rib, one of the second groove and the second rib is disposed on the lower side of the top plate, the other is disposed on the top of the laminated body, and when the second limiting recess and the second limiting protrusion are mutually matched, the second rib is embedded in the second groove.

10. The stator core manufacturing tooling of claim 6 or 9, wherein the bottom plate is annular, the first rib has a trapezoid cross section, and the first rib is annular continuous along the circumferential direction of the lamination body or the circumferential direction of the bottom plate;

and/or the top plate is in a circular ring shape, the section of the second convex rib is trapezoid, and the second convex rib is in a continuous ring shape along the circumferential direction of the laminated body or the circumferential direction of the top plate.

11. The stator core manufacturing tooling of claim 1, wherein the lamination body is radially provided with a plurality of lightening holes, the lightening holes being arranged along a circumferential direction of the lamination body.

12. The stator core manufacturing tooling of claim 1, wherein the lamination body comprises at least two lamination flaps with fan-shaped horizontal sections, the lamination flaps are arranged along the circumferential direction of the lamination body, the lamination flaps are detachably combined to form the lamination body, and a gap exists between two adjacent lamination flaps.

13. The stator core manufacturing tool of claim 1, wherein the top plate is provided with a first ring hole for installing a ring.

14. The stator core manufacturing tool of claim 1, further comprising a core support for supporting the stator core, wherein the core support is annular, an inner diameter of the core support is greater than an outer diameter of the bottom plate, an inner diameter of the core support is smaller than the outer diameter of the stator core, and a second hanging ring hole for hanging rings is formed in the core support.

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