CN110880844B - Stator coil tightening device and method for tightening coils - Google Patents
Stator coil tightening device and method for tightening coils Download PDFInfo
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- CN110880844B CN110880844B CN201911147184.3A CN201911147184A CN110880844B CN 110880844 B CN110880844 B CN 110880844B CN 201911147184 A CN201911147184 A CN 201911147184A CN 110880844 B CN110880844 B CN 110880844B
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000004804 winding Methods 0.000 claims description 10
- 238000012546 transfer Methods 0.000 claims description 6
- 239000010410 layer Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/04—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines
- H02K15/0414—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines the windings consisting of separate elements, e.g. bars, segments or half coils
- H02K15/0421—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines the windings consisting of separate elements, e.g. bars, segments or half coils and consisting of single conductors, e.g. hairpins
- H02K15/0428—Processes or apparatus for simultaneously twisting two or more hairpins
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention provides a stator coil tightening device and a method for tightening coils, wherein a plurality of U-shaped coils with rectangular cross sections are mutually combined and sleeved into a cylindrical coil barrel, and the stator coil tightening device comprises: the upper surface of the cylindrical rotating sleeve is provided with a rectangular groove for inserting a first foot of the U-shaped coil and matching with the cross section of the U-shaped coil, the lower part of the cylindrical rotating sleeve is provided with a section of pinion, the guide disc is in a circular ring or a disc shape, the guide disc is horizontally arranged, the inner ring of the cylindrical rotating sleeve is provided with a circle of rotating sleeve, the guide disc is provided with a plurality of guide sliding grooves which are the same as the rotating sleeve in number and matched with the rotating sleeve and extend outwards, and the second foot of the U-shaped coil is respectively inserted into each guide sliding groove; A driving mechanism is arranged below the guide disc and is meshed with a pinion at the lower part of the rotary sleeve. The invention adopts a mechanized mode to tighten the coil cylinder, greatly improves the tightening efficiency, and simultaneously avoids the problem that the coil is easy to deform due to manual tightening.
Description
Technical Field
The invention relates to stator winding processing of a hairpin motor, in particular to a stator coil tightening device and a method for tightening coils.
Background
The stator core of the existing hairpin motor is of a hollow structure, a plurality of layers of annular coil units formed by U-shaped hairpin coils are inserted into the stator core, and fig. 1 is a current common U-shaped hairpin coil. At present, the domestic mode is that a hairpin coil is manually inserted into a ring shape and then transferred into a stator core. During this operation we found a number of problems:
(1) When each hairpin coil is inserted and a circle of annular coil units is about to be completed, the last hairpin coils are difficult to insert due to mutual extrusion among coils, so that workers need to consume great effort and physical power to insert the last hairpin coils in place;
(2) Because the last hairpin coils are difficult to insert in place, the hairpin coils are likely to be bent by improper force applied by workers in operation, so that the product quality is affected;
(3) The manual operation mode is inefficient and the quality of the product is not guaranteed.
Disclosure of Invention
Aiming at the background that the current manual coil inserting efficiency is low and the problem is easy to occur, the invention provides the stator coil tightening device, which tightens the U-shaped coil in the stator winding in a mechanized mode, and greatly improves the production efficiency. The specific scheme is as follows:
a stator coil tightening device, a plurality of U-shaped coils that the cross-section is rectangle make up each other and overlap and put into the coil section of a cylinder, U-shaped coil is provided with two footings, stator coil tightening device includes:
The cylindrical rotating sleeve is vertically arranged and has the same number as the U-shaped coils, the upper surface is provided with a rectangular groove for inserting the first foot of the U-shaped coil and matching the cross section shape of the U-shaped coil, the lower part is provided with a section of pinion,
The guide disc is horizontally configured, a circle of rotating sleeves is arranged on the inner ring, a plurality of guide sliding grooves which are the same as the rotating sleeves in number and matched with the rotating sleeves and extend outwards are formed in the guide disc, and second feet of the U-shaped coil are respectively inserted into the guide sliding grooves;
A drive mechanism is disposed below the guide plate, and is engaged with a pinion gear at the lower portion of the rotary sleeve.
Further, the guiding chute comprises the following structures:
A radial linear chute, the width of which can be used for the second foot to slide in, and the radial direction is direct radial or the same direction as the rotation of the pinion;
A radial arc chute, the width of which can be used for the second foot to slide in, and the arc direction is the same as the rotation direction of the pinion;
is in a horn mouth shape with an outward opening.
Further, the driving mechanism is a driving large gear meshed with the small gear at the lower part of the rotary sleeve at the same time, or
The driving mechanism is a plurality of driving pinions respectively meshed with the pinions at the lower part of the rotary sleeves.
Further, at least one coaxial guide plate is arranged above the guide plate, a plurality of limit grooves corresponding to the positions of the guide sliding grooves are arranged on the guide plate, and at least one part of each limit groove is overlapped with each guide sliding groove in the axial direction.
Further, the device also comprises a transfer mechanism, wherein the transfer mechanism is used for driving the rotary sleeve and the guide disc to move away from the U-shaped coil in the axial direction or driving the tightened coil barrel to move away from the guide disc in the axial direction.
Further, the guide plate is provided with a plurality of through holes which are overlapped with the rotating sleeves in the axial direction.
Further, at least one guide chute is close to the end part of the rotary sleeve and the rotary sleeves with the same number are sequentially distributed at intervals in the circumferential direction.
Further, the end of each guide chute, which is close to the rotary sleeve, is positioned in or around the circular area surrounded by the rotary sleeve.
The invention also provides a method for tightening the U-shaped coil in the stator winding by adopting the stator coil tightening device, which comprises the following steps:
respectively inserting first feet of each U-shaped coil in the stator winding into each rotary sleeve, and respectively abutting the second feet at one end of each guide chute, which is far away from the rotary sleeve;
The rotating sleeve drives the first bottom feet to rotate, so that each U-shaped coil rotates around the first bottom feet, and the second bottom feet in the guide sliding grooves rotate from one end far away from the rotating sleeve to the other end.
The invention has the advantages that:
(1) The coil cylinder is tightened in a mechanized mode, so that the problem that the coil is easy to deform due to manual tightening is avoided;
(2) The device performs synchronous tightening treatment on each U-shaped coil in the coil cylinder, so that the tightening efficiency is greatly improved, and meanwhile, the stress in each direction of the coil in the tightening process is uniform, so that the coil deformation is avoided;
(3) The structure is simple, and the structure can be separated from the coil bobbin by the aid of the transfer mechanism after tightening is completed, so that the coil bobbin after tightening is convenient for the next working procedure;
(4) The tightening operation of the single-layer coil cylinder or the double-layer coil cylinder can be performed, and the processing requirements of stator coils with various specifications are met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a prior U-shaped hairpin;
fig. 2 is a schematic diagram of a main structure of a stator coil tightening device (single-layer coil tightening) according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a driving mechanism according to an embodiment of the present invention;
FIG. 4 is a schematic view of a guide plate added to the device of FIG. 2 according to an embodiment;
FIG. 5 is a plan view of a guide plate in one embodiment;
FIG. 6 is a perspective view of a rotating sleeve according to one embodiment;
FIG. 7 is a schematic view of a stator coil tightening device with guide plates added thereto (double layer coil tightening) in another embodiment;
FIG. 8 is a schematic view of the guide disc and rotating sleeve corresponding to FIG. 7;
Fig. 9 is a schematic view corresponding to the guide plate of fig. 7.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the invention.
In order to provide a thorough understanding of the present invention, detailed steps and detailed structures will be presented in the following description in order to explain the technical solution of the present invention. Preferred embodiments of the present invention are described in detail below, however, the present invention may have other embodiments in addition to these detailed descriptions.
The invention provides a stator coil tightening device 100 for tightening a coil bobbin. As shown in fig. 1, a plurality of U-shaped coils 1 with rectangular cross sections are mutually combined and sleeved into a cylindrical coil barrel, one end part of each U-shaped coil 1 is provided with a first foot 11, and the other end part is provided with a second foot 12. As shown in fig. 2, the stator coil tightening device 100 includes the following structure:
A cylindrical rotating sleeve 3, the rotating sleeve 3 is vertically arranged and is the same as the U-shaped coil 1 in number, a rectangular groove 31 for inserting the first foot 11 and matching the U-shaped coil in section is arranged on the upper surface, a section of pinion 30 is arranged on the lower part,
The guide plate 2 is in a circular ring or disc shape, the guide plate 2 is horizontally arranged, a circle of rotating sleeves 3 are arranged on the inner ring, a plurality of guide sliding grooves 4 which are the same as the rotating sleeves 3 in number and matched with each other and extend outwards are formed in the guide plate 2, and second feet 12 are respectively inserted into the guide sliding grooves 4;
A drive mechanism is arranged below the guide disc 2, and the drive mechanism is engaged with a pinion 30 at the lower part of the rotary sleeve 3.
The working mechanism of the invention is that the driving mechanism drives each rotary sleeve 3 to rotate. Since the first foot 11 of the U-shaped coil 10 is inserted into each rotating sleeve 3, the rotating sleeve 3 drives each U-shaped coil 10 to rotate around the first foot 11, so that the second foot 12 slides from outside to inside in the guiding chute 4, and when all the second feet 12 of all the U-shaped coils 10 slide to one end of the guiding chute 4 close to the axis, the tightening work of the stator winding coil tube is completed.
In the present invention, the number of the rotating sleeves 3 is the same as the number of the guide runners 4. Optionally, the guiding chute 4 specifically comprises a first structure and a radial linear chute, wherein the chute width can be used for the second foot of the U-shaped coil 1 to slide in, the radial direction is a direct radial direction or the same direction as the rotation of the pinion 30, a second structure and a radial arc chute, the chute width can be used for the second foot of the U-shaped coil 1 to slide in, the arc direction is the same direction as the rotation of the pinion 30, and the third structure is in a horn mouth shape with an outward opening. The direct radial direction means that the guide sliding groove smoothly transits from the outer ring to the inner ring, as shown in fig. 2, the rotating direction of the rotating sleeve 3 is clockwise in the tightening operation, and the arc-shaped guide sliding grooves 4 are distributed on the guide disc 2 in the anticlockwise direction. The track of each guide chute 4 is preferably one of the arc grooves of the path of drawing a circle with the center of each rotating sleeve 3 and the distance between the feet of the two ends of the U-shaped coil 10 as the radius.
Fig. 6 shows a schematic view of an alternative embodiment of the rotating sleeve 3, provided with a rectangular recess 31 at one end for inserting the first foot 11, a pinion 30 being provided at a section of the rotating sleeve 3. The inner contour of the rectangular recess 31 matches the shape of the first foot 11, i.e. the rectangular recess 31 has a rectangular cross section. When the first leg 11 of the U-shaped coil 10 is inserted into the rectangular groove 31, the first leg 11 of the U-shaped coil 10 is rotated synchronously with the rotating sleeve 3 by the rectangular groove 31.
In an alternative embodiment, as shown in fig. 2-3, the drive mechanism is a drive gearwheel 5 arranged in the area enclosed by each rotating sleeve 3, the drive gearwheel 5 engaging with teeth on each rotating sleeve 3. When the external driving force drives the driving large gear 5 to rotate, the rotation of the driving large gear 5 can simultaneously drive each rotary sleeve 3 to synchronously rotate in the same direction. In yet another alternative embodiment, the drive mechanism is a plurality of drive pinions respectively engaged with teeth on each rotating sleeve 3, and each rotating sleeve 3 is driven by the plurality of pinions to rotate synchronously and in the same direction. It should be noted that, the gear driving is only a transmission mode, and in practical application, we can also use a belt driving or chain driving mode to drive each rotating sleeve 3 to rotate.
The guide disc 2 is horizontally fixed by a plurality of brackets 6 arranged at the edge.
In an alternative embodiment, a plurality of guide sliding grooves 4 are annularly distributed on a guide disc 2, and a plurality of guide plates 7 are axially arranged on one side of the guide disc 2. Two adjacent guide plates 7 and the guide plate 2 are connected together through support columns 72. Wherein, a plurality of limit grooves 70 corresponding to the positions of the guide sliding grooves 4 are arranged on the guide plate 7, and at least one part of the limit grooves 70 is overlapped with the guide sliding grooves 4 in the axial direction. The first leg 11 of the U-shaped coil 10 passes through each through hole 71 in turn in the axial direction to be inserted into the rotating sleeve 3, and the second leg 12 passes through each limit groove 70 to slide in the guide chute 4 and the limit groove 70, as shown in fig. 4 to 5.
In an alternative embodiment, at least one guiding chute 4 is close to the end of the rotating sleeve 3 and is sequentially and circumferentially spaced from the same number of rotating sleeves 3, as shown in fig. 2 and 5, each set of two guiding chutes 4 and each set of two rotating sleeves 3 are sequentially and circumferentially spaced, and the end of the guiding chute 4 close to the rotating sleeve 3 and the rotating sleeve 3 enclose a circle, so that after the stator coil tightening device 100 of the design is adopted to tighten coils, two feet of each U-shaped coil 10 of the tightened coil units are all located on the same diameter circle, i.e. the invention can be used for tightening single-layer coil units.
In addition, the present invention can be used for the tightening process of the coil unit of the double-layer coil, and the rotating sleeve 3 and the guide sliding grooves 4 need to be properly adjusted for achieving the purpose, as shown in fig. 7-8, the end of each guide sliding groove 4 near the rotating sleeve 3 is positioned in or at the periphery of the inner ring of the circular area surrounded by the rotating sleeve 3. The following description will be made taking, as an example, that the guide chute 4 is disposed near the end of the rotating sleeve 3 and located at the periphery of the circular area surrounded by the rotating sleeve 3, that after the stator coil tightening device 100 of this design is used to tighten the coils, the circular area surrounded by the second leg of each U-shaped coil 10 of the tightened coil unit is located at the periphery of the circular area surrounded by the first leg, thereby realizing the tightening process for the double-layer coil unit. Meanwhile, with this design, the through hole on the guide plate 7 for passing through the first foot of the U-shaped coil 10 can be eliminated (as shown in fig. 9), and the first foot directly passes through the limit groove 70 on each guide plate 7 and is inserted into the rotating sleeve 3 at the inner end of the guide chute 4. Fig. 8 shows a schematic illustration of the guide disk 2 and the rotating sleeve 3 in the inner ring.
In an alternative embodiment, the device further comprises a transfer mechanism (not shown in the drawings) for driving the rotating sleeve 3 and the guide disc 2 to move away from the U-shaped coil 1 in the axial direction or driving the tightened coil bobbin to move away from the guide disc 2 in the axial direction. The stator coil tightening device 100 is separated from the tightened coil unit by the transfer mechanism, so that the tightened coil bobbin can be conveniently subjected to subsequent processes.
It should be noted that, for illustration, fig. 2, 4, and 7 are more intuitive, only 2U-shaped coils 10 are inserted into the stator coil tightening device 100, and in practical application, we need to insert the first leg of each U-shaped coil in the stator winding into each rotating sleeve 3, and insert the second leg into the corresponding guiding chute 4 and the limiting slot 70 (optional).
The invention also provides a method for tightening the U-shaped coil 10 in the stator winding by adopting the stator coil tightening device 100, which comprises the following steps:
A first foot 11 of each U-shaped coil 10 in the stator winding is respectively inserted into each rotating sleeve 3, and a second foot 12 is respectively abutted against one end of each guide chute 4 far away from the rotating sleeve 3;
the rotating sleeve 3 drives the first foot 11 to rotate, so that each U-shaped coil 10 rotates around the first foot 11, and the second foot 12 in the guide chute 4 rotates from one end far away from the rotating sleeve 3 to the other end until the second foot contracts towards the inner ring to form a cylinder.
The preferred embodiments of the present invention have been described above. It is to be understood that the invention is not limited to the particular embodiments described above, in which the apparatus and structures not described in detail are to be understood as being embodied in a manner commonly understood in the art, and that many possible variations and modifications may be made to the technical solution of the invention by any person skilled in the art using the methods and techniques disclosed above, or modified to equivalent embodiments without departing from the spirit of the invention. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (9)
1. A stator coil tightening device, a plurality of U-shaped coils (1) with rectangular cross sections are mutually combined and sleeved into a cylindrical coil barrel, and the U-shaped coils are provided with two feet, the stator coil tightening device is characterized in that the stator coil tightening device comprises:
The cylindrical rotating sleeve (3) is vertically arranged and has the same number as the U-shaped coils (1), the upper surface is provided with rectangular grooves for inserting first feet (11) of the U-shaped coils (1) and matching the section shape of the U-shaped coils, the lower part is provided with a section of pinion (30),
The guide disc (2) is in a circular ring or disc shape, the guide disc (2) is horizontally arranged, a circle of rotating sleeves (3) is arranged on the inner ring, a plurality of guide sliding grooves (4) which are the same as the rotating sleeves (3) in number and are matched with each other and extend outwards are formed in the guide disc (2), and second feet (12) of the U-shaped coil (1) are respectively inserted into the guide sliding grooves (4);
A drive mechanism is arranged below the guide disk (2), and is meshed with a pinion (30) at the lower part of the rotary sleeve (3).
2. Stator coil tightening device according to claim 1, characterized in that the guide runner (4) comprises the following structures:
a radial linear chute, the width of which allows the second foot to slide therein, the radial direction being either directly radial or in the same direction as the rotation of the pinion (30);
A radial arc chute, the width of which can be used for the second foot to slide in, and the arc direction is the same as the rotation direction of the pinion (30);
is in a horn mouth shape with an outward opening.
3. Stator coil tightening device according to claim 1, characterized in that the drive mechanism is a drive gearwheel (5) which simultaneously meshes with the lower pinion (30) of the rotating sleeve (3), or
The driving mechanism is a plurality of driving pinions respectively meshed with the pinions (30) at the lower part of the rotary sleeves (3).
4. Stator coil tightening device according to claim 2, characterized in that at least one coaxial guide plate (7) is arranged above the guide disc (2), that a number of limit grooves (70) corresponding to the positions of the guide runners (4) are arranged on the guide plate (7), and that at least a part of each limit groove (70) overlaps each guide runner (4) in the axial direction.
5. The stator coil tightening device according to claim 4, further comprising a transfer mechanism for moving the rotating sleeve (3) and the guide disc (2) axially away from the U-shaped coil (1) or for moving the tightened coil bobbin axially away from the guide disc (2).
6. Stator coil tightening device according to claim 4, characterized in that the guide plate (7) is provided with a number of through holes (71) coinciding with the rotation sleeves (3) in the axial direction.
7. Stator coil tightening device according to claim 6, characterized in that at least one of the guide runners (4) is circumferentially spaced apart from an equal number of rotating sleeves (3) in sequence near the end of the rotating sleeve (3).
8. Stator coil tightening device according to claim 4, characterized in that the end of each guide runner (4) adjacent to the rotating sleeve (3) is located inside or outside the circular area enclosed by the rotating sleeve (3).
9. A method of tightening a U-shaped coil (1) in a stator winding using a stator coil tightening device according to any one of claims 1-8, characterized by the steps of:
a first foot (11) of each U-shaped coil (1) in the stator winding is respectively inserted into each rotary sleeve (3), and a second foot (12) is respectively abutted against one end of each guide chute (4) far away from the rotary sleeve (3);
The rotary sleeve (3) drives the first feet (11) to rotate, so that each U-shaped coil (1) rotates by taking the first feet (11) as the center, and the second feet (12) in the guide chute (4) rotate from one end far away from the rotary sleeve (3) to the other end.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911147184.3A CN110880844B (en) | 2019-11-21 | 2019-11-21 | Stator coil tightening device and method for tightening coils |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911147184.3A CN110880844B (en) | 2019-11-21 | 2019-11-21 | Stator coil tightening device and method for tightening coils |
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| CN110880844A CN110880844A (en) | 2020-03-13 |
| CN110880844B true CN110880844B (en) | 2024-11-29 |
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| CN201911147184.3A Active CN110880844B (en) | 2019-11-21 | 2019-11-21 | Stator coil tightening device and method for tightening coils |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113452218B (en) * | 2020-03-27 | 2024-10-22 | 上海华太智科信息技术有限公司 | Stator coil machining station and stator coil machining method |
| CN113193716A (en) * | 2021-05-10 | 2021-07-30 | 安徽德科电气科技有限公司 | Winding device for generator stator coil |
| CN114899997A (en) * | 2022-04-25 | 2022-08-12 | 常州金康精工机械股份有限公司 | Can adjust conductor wire clearance put dish |
| CN114899998A (en) * | 2022-04-25 | 2022-08-12 | 常州金康精工机械股份有限公司 | Conductive wire placing disc |
| FR3148503B1 (en) * | 2023-05-04 | 2025-03-21 | Valeo Eautomotive Germany Gmbh | Stator winding assembly system |
| CN116780841B (en) * | 2023-08-21 | 2023-11-17 | 苏州百狮腾电气有限公司 | Flaring device for stator coil |
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| CN210839269U (en) * | 2019-11-21 | 2020-06-23 | 上海华太信息技术有限公司 | Stator coil tightening device |
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| JP5635470B2 (en) * | 2011-09-22 | 2014-12-03 | 日立オートモティブシステムズ株式会社 | Rotating electric machine and method of manufacturing rotating electric machine |
| JP6072238B2 (en) * | 2013-05-28 | 2017-02-01 | 三菱電機株式会社 | Manufacturing method of rotating electrical machine |
| JP2015198563A (en) * | 2014-04-03 | 2015-11-09 | 日産自動車株式会社 | Manufacturing method of stator for rotary electric machine, manufacturing device, and stator for rotary electric machine |
| CN208158248U (en) * | 2018-03-23 | 2018-11-27 | 上海大郡动力控制技术有限公司 | Stator applied to new-energy automobile rotating electric machine |
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| CN210839269U (en) * | 2019-11-21 | 2020-06-23 | 上海华太信息技术有限公司 | Stator coil tightening device |
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