CN106160276B - Stator holder, motor stator and motor stator injection molding method - Google Patents
Stator holder, motor stator and motor stator injection molding method Download PDFInfo
- Publication number
- CN106160276B CN106160276B CN201610539238.0A CN201610539238A CN106160276B CN 106160276 B CN106160276 B CN 106160276B CN 201610539238 A CN201610539238 A CN 201610539238A CN 106160276 B CN106160276 B CN 106160276B
- Authority
- CN
- China
- Prior art keywords
- stator
- ring body
- injection molding
- holder
- stator holder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001746 injection moulding Methods 0.000 title claims abstract description 34
- 238000004804 winding Methods 0.000 claims abstract description 31
- 230000003014 reinforcing effect Effects 0.000 claims description 17
- 230000007704 transition Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 229920002302 Nylon 6,6 Polymers 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000002347 injection Methods 0.000 abstract description 5
- 239000007924 injection Substances 0.000 abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 4
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 229910052802 copper Inorganic materials 0.000 abstract description 4
- 239000010949 copper Substances 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 238000007598 dipping method Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14065—Positioning or centering articles in the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14819—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being completely encapsulated
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/12—Impregnating, heating or drying of windings, stators, rotors or machines
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a stator holder, a motor stator and a motor stator injection molding method. The stator holder includes a ring body that mates with the inner diameter of the windings of the stator to be injection molded. Because the ring body contacts with the inner wall of the winding during injection molding, the injection molding process can prevent the abnormal displacement and deformation of the winding during injection molding, and can avoid the problem of copper exposure of the injection-molded stator, thereby the stator can be assembled in one flow production, and the purposes of reducing labor and improving efficiency are achieved.
Description
Technical Field
The invention relates to the field of stator manufacturing, in particular to a stator retainer, a motor stator and a motor stator injection molding method.
background
The production process of the iron-clad rotor plastic-sealed motor stator in the prior art is complex, comprises wire-inserting stator, stator paint dipping, stator cooling, stator injection molding and the like, needs numerous operators, is long in stator turnover time consumption, and cannot enable the stator to realize one-flow production. In addition, in the process, the stator needs to be dipped in paint, the purpose is to increase the voltage-resistant grade of the stator winding and the hardness of the winding, prevent the winding from being punched and shifted, deformed and the like by a BMC plastic package material in the stator injection molding process, and then perform the stator injection molding.
however, when the stator paint dipping process is adopted, the circle diameter of the stator winding can rebound (namely the inner diameter of the stator becomes smaller) in the paint dipping process of the stator, so that the stator winding is in contact with a mold core for injection molding in the injection molding process, and the winding after injection molding is exposed.
Disclosure of Invention
the embodiment of the invention provides a stator holder, a motor stator and a motor stator injection molding method, and aims to solve the problems that in the prior art, one-flow production of the stator cannot be realized, and copper is exposed in the injection molded stator.
To achieve the above object, an embodiment of the present invention provides a stator holder including a ring body fitted to an inner diameter of a winding of a stator to be injection-molded.
Preferably, a rib is provided to protrude from the inner side of the ring body.
preferably, the reinforcing rib has a columnar shape.
Preferably, one end of the reinforcing rib protrudes outside the ring body.
preferably, one end of the reinforcing bead has a guide portion.
Preferably, the portion of the reinforcing rib protruding from the ring body includes a tail portion and a transition portion, which are sequentially arranged, and the thickness of the transition portion gradually decreases along a direction toward the tail portion.
Preferably, the stator holder is made of nylon 66 material and 30% glass fiber.
Preferably, the ring body comprises an inner ring body and an outer ring body arranged outside the inner ring body, the inner ring body is connected with one side of the outer ring body through a bottom ring, and the inner ring body, the bottom ring and the outer ring body form a U-shaped groove-shaped structure.
the invention also provides a motor stator, which comprises a stator part and the stator retainer, wherein the stator retainer is arranged on the inner wall of the winding of the stator part, and the stator retainer and the stator part are compounded into a whole in an injection molding mode.
The invention also provides a motor stator injection molding method, which comprises the following steps: placing the stator holder at the inner wall of the winding of the stator part which is not varnished and in contact with the winding; the windings of the stator part and the stator holder are completely covered by injection molding.
Because the ring body contacts with the inner wall of the winding during injection molding, the injection molding process can prevent the abnormal displacement and deformation of the winding during injection molding, and can avoid the problem of copper exposure of the injection-molded stator, thereby the stator can be assembled in one flow production, and the purposes of reducing labor and improving efficiency are achieved.
Drawings
FIG. 1 is a front view of a stator holder of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1 of an embodiment of the present invention;
Fig. 3 is a perspective view of a stator holder of an embodiment of the present invention;
FIG. 4 is a schematic structural view of a stator portion with a stator holder mounted thereon according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view of FIG. 4 in accordance with an embodiment of the present invention;
FIG. 6 is a perspective view of FIG. 4 in accordance with an embodiment of the present invention;
FIG. 7 is a schematic illustration of a stator portion of an embodiment of the present invention as it is injection molded;
Fig. 8 is a perspective view of a stator holder of another embodiment of the present invention;
FIG. 9 is a front view of the stator holder of FIG. 8;
Fig. 10 is a sectional view of the stator holder shown in fig. 8.
Description of reference numerals: 1. a ring body; 2. reinforcing ribs; 3. a tail portion; 4. a transition section; 5. a stator portion; 6. a stator holder; 7. an inner ring body; 8. an outer ring body; 9. a bottom ring.
Detailed Description
The invention is described in further detail below with reference to the figures and the examples, but without limiting the invention.
Referring to fig. 1 to 7, the present invention provides a stator holder, which includes a ring body 1. The outer diameter of the ring body 1 is matched to the inner diameter of the windings of the stator to be injection moulded so as to contact the inner walls of the windings in use. Preferably, the stator holder of the present invention can use nylon 66 material and 30% glass fiber, which not only increases flexibility, but also has higher rigidity, heat resistance and wear resistance.
before injection molding, the stator retainer is installed in the stator coil, so that the ring body 1 can not only cause abnormal displacement and deformation of the windings during injection molding, but also avoid the problem of copper exposure of the injection-molded stator due to the fact that the windings are contacted with a mold core of an injection mold due to the displacement of the windings.
Further, because the ring body 1 is in contact with the inner wall of the winding, in the injection molding process, the stator is free of soaking, so that the stator can be assembled in a flow production mode, and the purposes of reducing the number of parts and improving the efficiency are achieved.
In a preferred embodiment, the ring body 1 is provided with ribs 2 protruding from the inside, and the strength of the ring body 1 can be increased by the ribs 2, for example, 12 ribs 2 are provided uniformly in the circumferential direction of the ring body 1. Thus, the reinforcing ribs 2 can be used for overcoming the impact force of the BMC in the injection molding process, so that the effect of preventing deformation is further improved. Preferably, the reinforcing bar 2 has a cylindrical shape. In addition, since the entire stator holder after injection molding is completely encapsulated by the BMC material, it is necessary to enhance the bonding force between the BMC molding material and the holder after injection molding by contacting the core with the reinforcing ribs 2.
in the present invention, it is preferable that one end of the reinforcing rib 2 protrudes outside the ring body 1, that is, the height of the reinforcing rib 2 is greater than the thickness of the ring body 1. More preferably, the end of the reinforcing rib 2 protruding out of the ring body 1 is provided with a guide part for injection molding and assembly, and the specific shape of the guide part can be designed according to the height of the product, so as to solve the abnormal situation in the assembly process and the operability in the assembly process of the stator production process and improve the working efficiency.
Preferably, the portion of the reinforcing rib 2 protruding from the ring body 1 includes a tail portion 3 and a transition portion 4 arranged in sequence, and the thickness of the transition portion 4 gradually decreases along the direction toward the tail portion 3. The transition part 4 has a certain inclination, so that a certain guiding effect can be achieved, and the BMC material can flow conveniently in the processes of assembling and injection molding of workers.
Fig. 8 to 10 show another embodiment of the present invention, in which the ring body 1 comprises an inner ring body 7 and an outer ring body 8 disposed outside the inner ring body 7, the inner ring body 7 is connected to one side of the outer ring body 8 by a bottom ring 9, and the inner ring body 7, the bottom ring 9 and the outer ring body 8 form a U-shaped groove-like structure.
The invention also provides a motor stator, which comprises a stator part 5 and the stator retainer 6, wherein the stator retainer 6 is arranged on the inner wall of the winding of the stator part 5, and the stator retainer 6 is compounded with the stator part 5 into a whole in an injection molding mode.
The invention also provides a motor stator injection molding method, which comprises the following steps: the above-mentioned stator holder 6 is placed at the inner wall of the winding of the non-varnished stator part 5 and in contact with the winding; the windings of the stator part 5 and the stator holder 6 are completely encapsulated by means of injection moulding.
of course, the above is a preferred embodiment of the present invention. It should be noted that, for a person skilled in the art, several modifications and refinements can be made without departing from the basic principle of the invention, and these modifications and refinements are also considered to be within the protective scope of the invention.
Claims (5)
1. A stator holder is characterized by comprising a ring body (1), wherein the outer diameter of the ring body (1) is matched with the inner diameter of a winding of a stator to be injection-molded;
The inner side of the ring body (1) is convexly provided with a reinforcing rib (2);
the reinforcing ribs (2) are columnar;
One end of the reinforcing rib (2) protrudes out of the ring body (1);
the one end of the reinforcing rib (2) is provided with a guide part;
the part of the reinforcing rib (2) protruding out of the ring body (1) comprises a tail part (3) and a transition part (4) which are sequentially arranged, and the thickness of the transition part (4) is gradually reduced along the direction towards the tail part (3).
2. The stator holder of claim 1, wherein the stator holder is made of a nylon 66 material and 30 wt% fiberglass.
3. A stator holder according to claim 1, characterized in that the ring body (1) comprises an inner ring body (7) and an outer ring body (8) arranged outside the inner ring body (7), the inner ring body (7) being connected to one side of the outer ring body (8) by a bottom ring (9), the inner ring body (7), the bottom ring (9) and the outer ring body (8) forming a U-shaped groove-like structure.
4. A stator for an electrical machine, comprising a stator part (5) and a stator holder (6) according to any of claims 1 to 3, the stator holder (6) being placed at the inner winding wall of the stator part (5), the stator holder (6) being compounded in one piece with the stator part (5) by means of injection moulding.
5. An injection molding method of a motor stator is characterized by comprising the following steps:
-placing the stator holder (6) according to any of claims 1 to 4 at the inner wall of the windings of a non-varnished stator part (5) and in contact with said windings;
the windings of the stator part (5) and the stator holder (6) are completely encapsulated by means of injection molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610539238.0A CN106160276B (en) | 2016-07-08 | 2016-07-08 | Stator holder, motor stator and motor stator injection molding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610539238.0A CN106160276B (en) | 2016-07-08 | 2016-07-08 | Stator holder, motor stator and motor stator injection molding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106160276A CN106160276A (en) | 2016-11-23 |
| CN106160276B true CN106160276B (en) | 2019-12-13 |
Family
ID=58062535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610539238.0A Active CN106160276B (en) | 2016-07-08 | 2016-07-08 | Stator holder, motor stator and motor stator injection molding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106160276B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108880053A (en) * | 2018-07-11 | 2018-11-23 | 合肥市通得力电气制造有限公司 | A kind of plastic packaging motor stator inner circle bushing |
| CN109599967A (en) * | 2018-12-26 | 2019-04-09 | 沈阳工业大学 | A kind of coil group technology of stator modules Combined motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100848801B1 (en) * | 2007-10-26 | 2008-07-28 | 주식회사 월모스 | Cruelty type from the direct current electric motor fixation volition person to sleep thu injection molding method |
| JP2011067055A (en) * | 2009-09-18 | 2011-03-31 | Mitsuba Corp | Method of manufacturing stator and stator |
| CN202260732U (en) * | 2011-10-25 | 2012-05-30 | 卧龙电气集团股份有限公司 | Coil stator free from lacquer dipping |
| CN103475131A (en) * | 2013-09-27 | 2013-12-25 | 珠海格力电器股份有限公司 | Plastic packaging motor stator and method for preventing injection molding deformation of end portions of coil windings of plastic packaging motor stator |
-
2016
- 2016-07-08 CN CN201610539238.0A patent/CN106160276B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100848801B1 (en) * | 2007-10-26 | 2008-07-28 | 주식회사 월모스 | Cruelty type from the direct current electric motor fixation volition person to sleep thu injection molding method |
| JP2011067055A (en) * | 2009-09-18 | 2011-03-31 | Mitsuba Corp | Method of manufacturing stator and stator |
| CN202260732U (en) * | 2011-10-25 | 2012-05-30 | 卧龙电气集团股份有限公司 | Coil stator free from lacquer dipping |
| CN103475131A (en) * | 2013-09-27 | 2013-12-25 | 珠海格力电器股份有限公司 | Plastic packaging motor stator and method for preventing injection molding deformation of end portions of coil windings of plastic packaging motor stator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106160276A (en) | 2016-11-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 519000 Guangdong city of Zhuhai Province Qianshan Applicant after: GREE ELECTRIC APPLIANCES,Inc.OF ZHUHAI Applicant after: ZHUHAI KAIBANG MOTOR MANUFACTURE Co.,Ltd. Address before: Doumen Longshan Town of Doumen District of Zhuhai city in Guangdong province 519110 two West Road No. six Applicant before: ZHUHAI KAIBANG MOTOR MANUFACTURE Co.,Ltd. Applicant before: GREE ELECTRIC APPLIANCES,Inc.OF ZHUHAI |
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| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |