CN113224918A - Coil hot-pressing system and process - Google Patents
Coil hot-pressing system and process Download PDFInfo
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- CN113224918A CN113224918A CN202110489697.3A CN202110489697A CN113224918A CN 113224918 A CN113224918 A CN 113224918A CN 202110489697 A CN202110489697 A CN 202110489697A CN 113224918 A CN113224918 A CN 113224918A
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- coil
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- 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
- H02K15/04—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines
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- 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
- H02K15/04—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines
- H02K15/0435—Wound windings
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- 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
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- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- General Induction Heating (AREA)
Abstract
The invention discloses a coil hot-pressing system and a coil hot-pressing process, and relates to the technical field of coil interturn gelatinization. The key points of the technical scheme comprise: a support base; the pressing devices are arranged on the supporting base in a sliding mode; a stencil assembly for carrying coils, the stencil assembly comprising a heating plate; the temperature control unit is used for providing a heat-conducting medium for the heating plate and comprises a heating device and a cooling device which are communicated with each other; the template assembly comprises a plurality of sizes, one template assembly can be matched with one pressing device, or one template assembly can be matched with a plurality of pressing devices, or a plurality of template assemblies can be matched with a plurality of pressing devices after being spliced. The invention adopts a plurality of pressing devices, and can be combined for use according to coils with different sizes, thereby improving the application range of the system and reducing the production cost.
Description
Technical Field
The invention relates to the technical field of coil interturn gelation, in particular to a coil hot-pressing system and a coil hot-pressing process.
Background
For medium and large sized VPI coils (bars), inter-turn gelling is required during the production process.
The prior Chinese patent with the publication number of CN206506423U discloses a device applied to the interturn hot press molding of a motor coil, which comprises an actuating mechanism, a main hydraulic station and a heating plate, wherein the actuating mechanism is used for pressurizing from the vertical direction and the horizontal direction, the main hydraulic station and the heating plate are arranged on two sides and the middle part of the motor coil, steam is introduced into the heating plate, the actuating mechanism comprises a vertical oil cylinder and a vertical pressing plate connected with the vertical oil cylinder, and the actuating mechanism further comprises a horizontal oil cylinder and a horizontal pressing plate connected with the horizontal oil cylinder.
However, the above-mentioned apparatus can only bake and press stator coils of a single size specification, and for stator coils of a plurality of size specifications, a plurality of baking and pressing devices are required, which results in high production cost.
Disclosure of Invention
In view of the shortcomings of the prior art, an object of the present invention is to provide a coil hot-pressing system, which can hot-press coils of a plurality of sizes, thereby reducing the production cost.
In order to achieve the purpose, the invention provides the following technical scheme:
a coil hot pressing system comprising:
a support base;
the pressing devices are arranged on the supporting base in a sliding mode;
a stencil assembly for carrying coils, the stencil assembly comprising a heating plate; and the number of the first and second groups,
the temperature control unit is used for providing a heat-conducting medium for the heating plate and comprises a heating device and a cooling device which are communicated with each other;
the template assembly comprises a plurality of sizes, one template assembly can be matched with one pressing device, or one template assembly can be matched with a plurality of pressing devices, or a plurality of template assemblies can be matched with a plurality of pressing devices after being spliced.
Furthermore, a heat conduction channel is arranged in the heating plate, and the same outer wall of the heating plate is respectively provided with a flow inlet and a flow outlet which are communicated with the heat conduction channel.
Further, the heat transfer medium includes heat transfer oil.
Further, the template assembly comprises at least three heating plates, and a coil separator is arranged between every two adjacent heating plates.
Furthermore, the template component also comprises cushion blocks arranged in the middle of the coil and on the upper side and the lower side of the coil.
Further, a sliding rail assembly is arranged between the pressing device and the supporting base.
Further, the pressing device comprises a horizontal driving mechanism, a horizontal pressing plate, a vertical driving mechanism and a vertical pressing plate; the horizontal driving mechanism and the horizontal pressing plate and the vertical driving mechanism and the vertical pressing plate are arranged in a separated mode, and force transmission is achieved after the horizontal driving mechanism and the horizontal pressing plate and the vertical driving mechanism and the vertical pressing plate are in contact.
Further, horizontal drive mechanism and vertical drive mechanism are hydraulic drive mechanism, coil hot pressing system still includes hydraulic pressure station and a plurality of hydraulic pressure valves.
Another objective of the present invention is to provide a hot pressing process using the coil hot pressing system, which includes the following steps: and in the coil prepressing process, the horizontal driving mechanism and the vertical driving mechanism adopt multiple times of alternate pressurization.
Further, in the coil pre-pressing process, the horizontal driving mechanism or the vertical driving mechanism enters a pressure maintaining state after one-time pressure application is completed, and the pressure applying value is defined as K1, and the pressure maintaining value is defined as K2, and then K2 is smaller than K1.
In conclusion, the invention has the following beneficial effects:
1. the coil hot-pressing system has the effects of high heat efficiency, high automation degree and high production efficiency, and is particularly suitable for the production process of medium and large VPI coils (high-voltage motor coils and generator bars) with inter-turn gelatinization and pull-back type;
2. the multiple pressing devices can be combined for use according to coils with different sizes, so that the use range of the system can be enlarged, and the production cost is reduced;
3. the heat conduction oil is adopted for heating and cooling, so that the uniformity of heating the coil can be improved, the cooling speed of the coil can be improved, the production efficiency can be improved, and the operation is convenient;
4. by adopting the process of alternately pressurizing for many times, the wide side and the narrow side of the coil can obtain better pressure, the wide side and the narrow side of the coil are fully ensured to be uniformly stressed, and better inter-turn gelling quality is obtained.
Drawings
Fig. 1 is a schematic structural diagram of a coil thermocompression system in embodiment 1;
fig. 2 is a schematic structural view of a laminating apparatus in embodiment 1;
FIG. 3 is a first schematic diagram illustrating a first operating condition of the coil hot pressing system in embodiment 1;
FIG. 4 is a second schematic diagram of the operating mode of the coil hot pressing system in embodiment 1;
FIG. 5 is a third schematic view of the operating condition of the coil hot pressing system in embodiment 1;
fig. 6 is a fourth schematic operating condition diagram of the coil hot-pressing system in embodiment 1.
In the figure: 1. a cooling device; 2. a heating device; 3. a hydraulic station; 4. a hydraulic valve block; 5. a support base; 51. a slide rail assembly; 6. a pressing device; 61. a rack; 62. a fixing plate; 63. a horizontal driving mechanism; 631. a horizontal pressing plate; 64. a vertical drive mechanism; 641. a vertical pressing plate; 7. a template assembly; 71. heating plates; 711. a heat conducting channel; 72. a base plate; 73. cushion blocks; 74. a coil separator; 8. and a coil.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Example 1:
a coil hot-pressing system, refer to fig. 1 to 3, which includes a supporting base 5, a pressing device 6, a template assembly 7 and a temperature control unit; the pressing devices 6 are slidably disposed on the support base 5, and the number of the pressing devices 6 is plural, specifically, a sliding rail assembly 51 is disposed between the pressing device 6 and the support base 5 in this embodiment, and the sliding rail assembly 51 is adopted to facilitate moving the pressing devices 6; the die plate assembly 7 is used to carry the coil 8 and includes a heating plate 71; the template assembly 7 comprises a plurality of sizes to process coils 8 with different sizes, one template assembly 7 can be matched with one pressing device 6, or one template assembly 7 can be matched with a plurality of pressing devices 6 at the same time, or a plurality of template assemblies 7 can be matched with a plurality of pressing devices 6 at the same time after being spliced.
Referring to fig. 1 to 6, in the present embodiment, six pressing devices 6 are disposed on the supporting base 5, and four use conditions are illustrated in the present embodiment; under a first working condition, two laminating devices 6 are combined to form a station, six laminating devices 6 are combined to form three stations, each station can work independently, and the length of each station can be adjusted, namely, under the first working condition, three coils 8 with different sizes and specifications can be processed; under the second working condition, the three pressing devices 6 are combined to form one station, and the six pressing devices 6 form two stations together, namely, the second working condition can process two coils 8 with different dimensions; under the third working condition, two laminating devices 6 are combined to form one station, and the other four laminating devices 6 are combined to form another station, namely, the third working condition can process two coils 8 with different dimensions; under the working condition four, the six pressing devices 6 are combined together to form a station; therefore, the coil pressing devices 6 are combined for use in the embodiment, and the coils 8 with different sizes can be processed, so that the cost can be reduced, the combination and the use are convenient, and the production efficiency is high.
Referring to fig. 1 and 2, the temperature control unit is used for providing a heat transfer medium for the heating plate 71, and includes a heating device 2 and a cooling device 1 which are communicated with each other; specifically, the heat conducting medium in this embodiment is heat conducting oil; the conduction oil is adopted for heating, so that the uniformity of heating the coil 8 can be improved; the heating device 2 and the cooling device 1 are combined, when heating is finished, cooling is automatically switched, the cooled heat conduction oil is used for cooling the coil 8, the cooling speed of the coil 8 can be increased, the production efficiency is improved, and the cooled coil 8 is convenient to disassemble; when cooling down coil 8, the conduction oil that originally provided heat switches into and takes away the heat, can save the cooling to the heat source to can improve cooling speed.
Referring to fig. 1 to 3, a heat conduction channel 711 is disposed in the heating plate 71, and an inlet and an outlet (not shown in the drawings) communicating with the heat conduction channel 711 are respectively disposed on the same outer wall of the heating plate; in the embodiment, the inflow port and the outflow port are arranged on the side wall of the heating plate 71, so that the splicing combination of the two heating plates 71 can be realized, namely, the two template assemblies 7 are spliced and then matched with a plurality of pressing devices 6 to process coils 8 with larger size and specification, so that the mold opening cost can be saved, and the operation is convenient; in other alternative embodiments, the inlet and the outlet may be disposed on the top wall of the heating plate 71, so that three or more heating plates 71 may be assembled, and this is not limited herein; in this embodiment, the heat conducting channel 711 is a heating channel and a cooling channel, which can simplify the structure of the heating plate 71, facilitate the processing and reduce the cost.
Referring to fig. 2 and 3, the mold plate assembly 7 includes at least three heating plates 71, and a coil separator 74 is disposed between adjacent two heating plates 71; specifically, the template assembly 7 in this embodiment includes three heating plates 71, and two coils 8 can be carried between two adjacent heating plates 71, so that the template assembly 7 in this embodiment can simultaneously carry four coils 8 at a time; in other alternative embodiments, the number of the heating plates 71 can be increased or decreased, and the cost performance of the embodiment with three heating plates 71 is higher when the production cost and the processing efficiency are considered together; in the embodiment, the coil 8 is vertically arranged, namely, the middle hole of the coil 8 faces to the horizontal direction, so that the heating area can be increased, and the production efficiency and the quality are improved; under the vertical condition of placing of coil 8, can bear four coils 8 simultaneously in this embodiment, four coils 8 are arranged along the horizontal direction, also can reach the effect that improves production efficiency.
Referring to fig. 2 and 3, the die assembly 7 in this embodiment further includes spacers 73 disposed in the middle of the coil 8 and on the upper and lower sides of the coil 8, and spacers 72 are disposed on both sides of the heating plate 71; for the coil 8, the backing plate 72 and the coil separator 74 are matched for direct pressing in the horizontal direction, and the three cushion blocks 73 are matched for direct pressing in the vertical direction; in this embodiment, the coil separator 74 separates two coils 8 and also separates two adjacent rows of spacers 73.
Referring to fig. 1 and 2, the press device 6 in the present embodiment includes a stand 61, and a horizontal driving mechanism 63 and a vertical driving mechanism 64 are provided on the stand 61; the pressing device 6 further comprises a horizontal pressing plate 631, a vertical pressing plate 641 and a fixing plate 62; wherein, the fixed plate 62 is fixedly connected with the stand 61, and the horizontal pressure plate 631 is matched for realizing the support in the horizontal direction; in this embodiment, the horizontal driving mechanism 63 and the horizontal pressing plate 631, and the vertical driving mechanism 64 and the vertical pressing plate 641 are separately arranged, and force transmission is realized after contact; horizontal clamp plate 631 and vertical clamp plate 641 adopt the disconnect-type design, and it includes multiple dimensions equally, and when a plurality of compression fittings 6 combined use, sharing horizontal clamp plate 631 and vertical clamp plate 641 can guarantee the uniformity of pressfitting, improve the pressfitting effect.
Referring to fig. 2, in the present embodiment, the horizontal driving mechanism 63 and the vertical driving mechanism 64 are both hydraulic driving mechanisms, and the coil hot-pressing system further includes a hydraulic station 3 and a plurality of hydraulic valve banks 4; in the embodiment, the horizontal driving mechanism 63 is of a direct-pressing type structure, and the vertical driving mechanism 64 is of a lever type structure, so that the hydraulic cylinders of the horizontal driving mechanism 63 and the vertical driving mechanism 64 are conveniently arranged on the same side of the rack 61; in other alternative embodiments, the vertical driving mechanism 64 may also be a direct-pressing type structure, which is not limited herein.
Example 2:
a coil hot pressing process of a coil hot pressing system in application embodiment 1 mainly includes the following steps: to coil pre-compaction, to coil hot pressing and to coil coldly pressing and design, compare in current hot pressing technology, its main difference lies in: in the embodiment, the horizontal driving mechanism and the vertical driving mechanism are alternately pressurized for multiple times in the coil prepressing process; if the target value of horizontal pressure application is K water, the target value of vertical pressure application is K vertical, and 6 times of pressure boosting are executed totally, the 6 times of horizontal pressure application are executed totally, wherein the 6 times of horizontal pressure application comprise sequentially increased K water-1, K water-2, K water-3, K water-4, K water-5 and K water-6, and the 6 times of vertical pressure application comprise sequentially increased K vertical-1, K vertical-2, K vertical-3, K vertical-4, K vertical-5 and K vertical-6; pressurizing alternately for many times, namely, the pressurizing sequence is K water-1, K vertical-1, K water-2, K vertical-2 … … to K water-6 and K vertical-6; in the embodiment, a pressurizing mode of pressurizing alternately for multiple times is adopted, so that the wide side and the narrow side of the coil can obtain better pressure, the wide side and the narrow side of the coil are uniformly stressed, and better inter-turn gelling quality is obtained.
In this embodiment, in the coil pre-pressing process, the horizontal driving mechanism or the vertical driving mechanism enters a pressure maintaining state after one-time pressure application is completed, and a pressure applying value is defined as K1, and a pressure maintaining value is defined as K2, where K2 is smaller than K1; in the single pressure application process, the pressure maintaining pressure value K2 is smaller than the pressure application pressure value K1, namely, incomplete pressure release is carried out after pressure application, and the stroke of the piston is reserved, so that the wide side and the narrow side of the coil can further obtain better pressure, the wide side and the narrow side of the coil are fully ensured to be uniformly stressed, and better inter-turn gelling quality is obtained.
Claims (10)
1. A coil hot pressing system, comprising:
a support base;
the pressing devices are arranged on the supporting base in a sliding mode;
a stencil assembly for carrying coils, the stencil assembly comprising a heating plate; and the number of the first and second groups,
the temperature control unit is used for providing a heat-conducting medium for the heating plate and comprises a heating device and a cooling device which are communicated with each other;
the template assembly comprises a plurality of sizes, one template assembly can be matched with one pressing device, or one template assembly can be matched with a plurality of pressing devices, or a plurality of template assemblies can be matched with a plurality of pressing devices after being spliced.
2. The coil thermocompression system of claim 1, wherein: a heat conduction channel is arranged in the heating plate, and the same outer wall of the heating plate is respectively provided with a flow inlet and a flow outlet communicated with the heat conduction channel.
3. The coil thermocompression system of claim 1, wherein: the heat transfer medium includes heat transfer oil.
4. The coil thermocompression system of claim 1, wherein: the template component comprises at least three heating plates, and a coil partition plate is arranged between every two adjacent heating plates.
5. The coil thermocompression system of claim 4, wherein: the template component also comprises cushion blocks arranged in the middle of the coil and on the upper side and the lower side of the coil.
6. The coil thermocompression system of claim 1, wherein: and a sliding rail assembly is arranged between the pressing device and the supporting base.
7. The coil thermocompression system of any of claims 1-6, wherein: the pressing device comprises a horizontal driving mechanism, a horizontal pressing plate, a vertical driving mechanism and a vertical pressing plate; the horizontal driving mechanism and the horizontal pressing plate and the vertical driving mechanism and the vertical pressing plate are arranged in a separated mode, and force transmission is achieved after the horizontal driving mechanism and the horizontal pressing plate and the vertical driving mechanism and the vertical pressing plate are in contact.
8. The coil thermocompression system of claim 7, wherein: horizontal drive mechanism and vertical drive mechanism are hydraulic drive mechanism, coil hot pressing system still includes hydraulic pressure station and a plurality of hydraulic pressure valves.
9. A coil hot-pressing process using the coil hot-pressing system according to claim 8, wherein: and in the coil prepressing process, the horizontal driving mechanism and the vertical driving mechanism adopt multiple times of alternate pressurization.
10. The coil hot pressing process according to claim 9, wherein: in the coil prepressing process, the horizontal driving mechanism or the vertical driving mechanism enters a pressure maintaining state after one-time pressure application is finished, the pressure applying pressure value is defined as K1, the pressure maintaining pressure value is defined as K2, and K2 is smaller than K1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110489697.3A CN113224918A (en) | 2021-05-06 | 2021-05-06 | Coil hot-pressing system and process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110489697.3A CN113224918A (en) | 2021-05-06 | 2021-05-06 | Coil hot-pressing system and process |
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| CN113224918A true CN113224918A (en) | 2021-08-06 |
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| CN202110489697.3A Pending CN113224918A (en) | 2021-05-06 | 2021-05-06 | Coil hot-pressing system and process |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1121536A (en) * | 1995-07-13 | 1996-05-01 | 叶均蔚 | Method and device for improving property of alloy material and products thereof |
| CN202221948U (en) * | 2011-09-02 | 2012-05-16 | 上海闵行机械工程技术研究所 | Hot press for stator coil |
| CN106898822A (en) * | 2017-05-05 | 2017-06-27 | 惠州亿纬锂能股份有限公司 | A kind of lithium battery production technology and lithium battery |
| CN206332587U (en) * | 2016-12-26 | 2017-07-14 | 江西江特电机有限公司 | Combined motor coil fusiformis hot press |
| CN206506423U (en) * | 2016-12-23 | 2017-09-19 | 上海上电机电设备工程有限公司 | A kind of device hot-forming applied to motor coil turn-to-turn |
| CN112366903A (en) * | 2020-11-27 | 2021-02-12 | 苏州贯龙电磁线有限公司 | Baking and pressing equipment for stator coil |
-
2021
- 2021-05-06 CN CN202110489697.3A patent/CN113224918A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1121536A (en) * | 1995-07-13 | 1996-05-01 | 叶均蔚 | Method and device for improving property of alloy material and products thereof |
| CN202221948U (en) * | 2011-09-02 | 2012-05-16 | 上海闵行机械工程技术研究所 | Hot press for stator coil |
| CN206506423U (en) * | 2016-12-23 | 2017-09-19 | 上海上电机电设备工程有限公司 | A kind of device hot-forming applied to motor coil turn-to-turn |
| CN206332587U (en) * | 2016-12-26 | 2017-07-14 | 江西江特电机有限公司 | Combined motor coil fusiformis hot press |
| CN106898822A (en) * | 2017-05-05 | 2017-06-27 | 惠州亿纬锂能股份有限公司 | A kind of lithium battery production technology and lithium battery |
| CN112366903A (en) * | 2020-11-27 | 2021-02-12 | 苏州贯龙电磁线有限公司 | Baking and pressing equipment for stator coil |
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Application publication date: 20210806 |
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