CN219357663U

CN219357663U - Novel stator inner hole forming equipment

Info

Publication number: CN219357663U
Application number: CN202320797620.7U
Authority: CN
Inventors: 王晛; 王永东; 杨涛
Original assignee: GP Enterprises Co Ltd
Current assignee: GP Enterprises Co Ltd
Priority date: 2023-04-12
Filing date: 2023-04-12
Publication date: 2023-07-18
Anticipated expiration: 2033-04-12

Abstract

The utility model discloses novel stator inner hole forming equipment, which comprises the following components: the device comprises a device frame, a hydraulic cylinder, an upward core, a transfer mechanism, a core die lower plate, a core die upper plate, a downward core and a block expansion die, wherein the core die upper plate, the downward core and the block expansion die are arranged above the core die lower plate and are connected with the core die lower plate through elastic members, the upward core has the same structure as the downward core and is of a four-sided cone structure with a small upper part and a large lower part, the tops of the upward core and the downward core are square planes, the expansion block die consists of four expansion blocks which are uniformly distributed along the circumference of the expansion block die in the radial direction, two end surfaces of each expansion block are processed into two groups of symmetrical four-sided cones up and down along the shaft center line, the four expansion blocks surround to form an upper group of four-sided cone cavities and a lower group of four-sided cone cavities, the four expansion block die is provided with a beveling plane which is matched and contacted with an upward expansion core or a downward expansion core, and an external sleeve of the expansion block die is provided with a telescopic expansion block die sleeve. The inner hole forming equipment for the electronic iron core can ensure that the shielding sleeve is tightly attached to the inner hole of the stator iron core, and the shielding sleeve cannot be broken.

Description

Novel stator inner hole forming equipment

Technical Field

The utility model relates to the field of water pump motor production equipment, in particular to novel stator inner hole forming equipment.

Background

One difficulty in the production and manufacture of the canned motor pump is how to ensure that the thickness of the canned motor pump is only about 0.15mm and the tight fit of the inner hole of the stator core does not crush the canned motor pump, and also ensure that the extrusion shaping of the canned motor pump at the coil parts at the two ends of the stator core is in place.

The common manufacturing method is that the traditional conical expansion core and the expansion block are used for directly expanding and pressing the stator core, but the conical expansion core and the stress surface of the expansion block are in a line, so that the problems that the shielding sleeve and the core are not tightly expanded and pressed or the shielding sleeve on one side is crushed due to uneven stress exist; the two ends of the iron core are not fully pressed, the inner diameter of the shielding sleeve is not fully larger than the inner hole of the iron core, and the rotor is difficult to assemble into the stator.

Disclosure of Invention

The utility model mainly solves the technical problem of providing novel stator inner hole forming equipment, which can ensure that a shielding sleeve is tightly attached to an inner hole of a stator core, does not hurt wires, does not crush the shielding sleeve, ensures that the expanding inner diameter is larger than the inner hole of the core, does not cause collision interference when a rotor is assembled, and improves the yield.

In order to solve the technical problems, the utility model adopts the following technical scheme: provided is a novel stator inner hole forming device, comprising: the device comprises a device frame, a hydraulic cylinder arranged at the top of the frame, an ascending core driven by the hydraulic cylinder to move up and down, a transfer mechanism arranged on the device frame, a core die lower plate arranged on the transfer mechanism, a core die upper plate arranged above the core die lower plate and connected with the core die lower plate through an elastic piece, a lower ascending core arranged on the core die upper plate and an expanding block die, wherein the ascending core and the lower ascending core have the same structure and are of a four-sided cone structure with the small upper part and the large lower part, the tops of the ascending core and the lower ascending core are square planes, the expanding block die consists of four expanding blocks uniformly distributed along the circumference of the four expanding blocks in the radial direction, two end faces of each expanding block are processed into two groups of symmetrical four-sided cones up and down along the central line of a shaft, the four blocks surround to form an upper four-sided cone cavity and a lower four-sided cone cavity, the connecting parts of the two groups of four-sided cone cavities are matched with the tops of the ascending core or the lower expanding core, and the outer sleeve of the expanding block die is provided with an expanding block die with expansion.

In a preferred embodiment of the present utility model, the expansion block mold jacket is made of rubber and has a hollow structure with a smooth cylindrical surface.

In a preferred embodiment of the present utility model, the equipment rack includes a support frame, a rack upper plate, a rack lower plate, and a guide post, wherein the rack upper plate and the rack lower plate are arranged on the support frame, the guide post is sleeved with a rack middle plate, the rack middle plate is connected with an input end of a hydraulic cylinder, and the rising core is installed on the rack middle plate and can move up and down under the driving of the contraction of the hydraulic cylinder.

In a preferred embodiment of the present utility model, the transfer mechanism includes a linear guide rail disposed on a lower base plate of the frame, a chute slidably connected to the linear guide rail, and a loading and unloading cylinder for pushing the lower core mold plate into or out of the operation station.

In a preferred embodiment of the present utility model, the cross section of the connecting portion of the four-sided cone cavity is square and matched with the top of the rising core or the falling core.

In a preferred embodiment of the present utility model, the upper plate of the core mold is provided with a part base, and the lower expansion core is mounted on the part base.

In a preferred embodiment of the present utility model, the elastic member is two sets of springs.

The beneficial effects of the utility model are as follows: the shielding sleeve can be tightly attached to the inner hole of the stator core, the wire is not damaged, and the shielding sleeve is not broken; the shielding sleeves at the two ends of the stator can be stressed and expanded outwards under the protection of the flexible expansion block die sleeve, and can be tightly attached to the stator coil; the inner diameter of the end shielding sleeve is larger than that of the inner hole of the iron core, so that the end shielding sleeve cannot interfere with the rotor during assembly; automatic feeding and discharging, automatic demoulding of the expansion core, acceleration of forming time and reduction of working time cost.

Drawings

For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

FIG. 1 is a schematic view of the stator bore forming apparatus of the present utility model after assembly of motor stator components;

FIG. 2 is a schematic illustration of the assembly of the stator bore forming apparatus of the present utility model with a stator component of an electric machine;

fig. 3 is a partial enlarged view of fig. 2.

Detailed Description

The following description of the technical solutions in the embodiments of the present utility model will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, an embodiment of the present utility model is a novel stator inner hole forming apparatus, including: the equipment comprises an equipment frame 1, a hydraulic cylinder 2 arranged at the top of the frame, an ascending core 3 driven to move up and down by the hydraulic cylinder, a transfer mechanism arranged on the equipment frame, a core die lower plate 4 arranged on the transfer mechanism, a core die upper plate 6 arranged above the core die lower plate and connected with the core die lower plate through an elastic piece 19, a descending core 7 arranged on the core die upper plate and an expanding block die 8, wherein a part base 9 is arranged on the core die upper plate, the descending core is arranged on the part base, the ascending core and the descending core have the same structure and are of a four-sided cone structure with the upper part being small and the lower part being large, the tops of the ascending core and the descending core are square planes, and the bottoms of the ascending core and the descending core are cylinders, so that the equipment frame is convenient to use for fixed installation.

Specifically, the expansion block mold is composed of four expansion blocks 31 which are uniformly distributed along the circumference of the expansion block mold in the radial direction, two end faces of each expansion block are processed into two groups of symmetrical four-sided cones up and down along the axial center line, the four expansion blocks surround to form an upper group of four-sided cone cavities 32 and a lower group of four-sided cone cavities which are matched with the expansion core and the lower expansion core, the four-sided cone cavities are internally provided with inclined planes 33 which are matched with and contacted with the expansion core or the lower expansion core, the contact of the expansion core, the lower expansion core and the expansion blocks can be ensured to be always in surface contact, the external expansion stress of the expansion blocks is uniform, the situation that one side of the expansion block is stressed excessively and the shielding sleeve in the stator core is damaged is avoided, in addition, the cross section of the connecting parts of the two groups of four-sided cone cavities is square matched with the top of the expansion core or the lower expansion core, and the upper end and the lower end of the expansion block are processed into symmetrical four-sided cones, and the expansion core is extruded in opposite directions, so that the expansion blocks are expanded in a supporting way, and the expansion blocks are ensured to be uniformly stressed.

Specifically, the outer part of the expansion block die is sleeved with the expansion block die jacket 10 with elasticity, and in the embodiment of the utility model, the expansion block die jacket is made of rubber and has a hollow structure with a smooth cylindrical surface, and the shielding sleeve of the stator core is protected by the deformation of the rubber layer, so that the tight fit between the shielding sleeve and the inner hole of the stator core can be ensured, the shielding sleeve cannot be crushed, the shielding sleeve can be pressed into the notch, and the strength of the middle part of the shielding sleeve is also improved.

Specifically, the equipment rack comprises a supporting frame 11, a rack upper plate 12, a rack lower plate 13 and a guide post 14, wherein the rack upper plate is arranged on the supporting frame, the guide post 14 is arranged between the rack upper plate and the rack lower plate, a rack middle plate 15 is sleeved on the guide post through a bearing, the rack middle plate is connected with the input end of a hydraulic cylinder, and an ascending core is arranged on the rack middle plate and can move up and down under the driving of the contraction of the hydraulic cylinder.

Specifically, the transfer mechanism comprises a linear guide rail 16 arranged on a lower bottom plate of the frame and a chute 17 in sliding connection with the linear guide rail, wherein the chute is fixed on the lower core mold plate, and the lower core mold plate can be pushed into or withdrawn from an operation station in the frame of the equipment under the action of an upper and lower feeding air cylinder 18.

Working principle: in the concrete implementation, the motor stator part 5 is placed on a part base provided with a lower expansion core, a shielding sleeve 51 is sleeved on an inner hole of a stator core 54, an expansion block die with an outer sleeve is inserted into the lower expansion core, a button is pressed down, an upper discharging cylinder and a lower discharging cylinder return, the stator part 5, the expansion block die and the lower expansion core are driven to move to an operation station of a bottom plate of a frame through the matching of a linear sliding rail and a sliding groove, the alignment with a central line of the upper expansion core is realized, a hydraulic cylinder is started to work, the lower expansion core extends into the inner hole of the stator part 5 and is contacted with four expansion blocks, the four expansion blocks are matched with the lower expansion core to perform centering extrusion, so that the four expansion blocks are outwards spread, the outer sleeve of the expansion block die is uniformly stressed, the whole deformation is outwards expanded, the shielding sleeve 51 sleeved outside the middle part of the expansion block is tightly bonded with the inner hole of the iron core, the outer stress parts of the shielding sleeve are tightly bonded with the two ends of a coil 53, the lower core is driven to downwards move when the lower expansion block is pressed down, the lower core is tightly bonded with the stator coil, the two groups of springs are driven to be deformed downwards, and the upper plate is shortened when the hydraulic cylinder is pressed downwards; after the extrusion is completed in place, the hydraulic cylinder is recovered upwards, the rising core is separated from the rising block die in a proper direction, the spring is not stressed any more, and the rising block die is separated from the lower rising core by rising, so that the automatic demoulding of the rising core rising block is completed; at the moment, the feeding and discharging air cylinder is inflated and ejected, the push-out of the expanding stator part 5 is completed, and after the part taking is completed, the next part processing is waited.

In summary, the novel stator inner hole forming equipment disclosed by the utility model can ensure that the shielding sleeve is tightly attached to the inner hole of the stator core, and the shielding sleeve is not damaged or broken; the shielding sleeves at the two ends of the stator can be stressed and expanded outwards under the protection of the flexible expansion block die sleeve, and can be tightly attached to the stator coil; the inner diameter of the end shielding sleeve is larger than that of the inner hole of the iron core, so that the end shielding sleeve cannot interfere with the rotor during assembly; automatic feeding and discharging, automatic demoulding of the expansion core, acceleration of forming time and reduction of working time cost.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present utility model.

Claims

1. Novel stator hole former, characterized in that includes: the device comprises a device frame, a hydraulic cylinder arranged at the top of the frame, an ascending core driven by the hydraulic cylinder to move up and down, a transfer mechanism arranged on the device frame, a core die lower plate arranged on the transfer mechanism, a core die upper plate arranged above the core die lower plate and connected with the core die lower plate through an elastic piece, a lower ascending core arranged on the core die upper plate and an ascending block die, wherein the ascending core and the lower ascending core have the same structure and are of a four-sided cone structure with the small upper part and the large lower part, the tops of the ascending core and the lower ascending core are square planes, the ascending block die consists of four ascending blocks uniformly distributed along the circumference of the four ascending blocks, two end faces of each of the ascending blocks are processed into two groups of symmetrical four-sided cones up and down along the axial center line, the four ascending blocks surround to form an upper group of four-sided cone cavity and a lower group of four-sided cone cavity, the connecting parts of the two groups of four-sided cone cavities are matched with the tops of the ascending core or the lower ascending core, and the outer sleeve of the four-sided cone die is provided with an outer expansion block die with expansion property.

2. The novel stator bore molding apparatus of claim 1, wherein said tensioning block die housing is rubber and has a hollow structure with a smooth cylindrical surface.

3. The novel stator bore molding apparatus of claim 1, wherein the apparatus frame comprises a support frame, a frame upper plate, a frame lower plate and a guide post arranged between the frame upper plate and the frame lower plate, the guide post is sleeved with a frame middle plate, the frame middle plate is connected with the input end of the hydraulic cylinder, and the rising core is mounted on the frame middle plate and can move up and down under the driving of the contraction of the hydraulic cylinder.

4. The novel stator bore molding apparatus of claim 3, wherein the transfer mechanism comprises a linear guide rail arranged on the lower bottom plate of the frame, a chute slidingly connected with the linear guide rail, and a loading and unloading cylinder for pushing the lower core mold plate into or out of the operating station.

5. The novel stator bore molding apparatus of claim 1 wherein the junction section of the four sided pyramid shaped cavities is square shaped to mate with the top of the rising or falling core.

6. The novel stator bore molding apparatus as claimed in claim 1, wherein the core mold upper plate is provided with a part base, and the lower expansion core is mounted on the part base.

7. The novel stator bore forming apparatus of claim 1, wherein the spring elements are two sets of springs.