WO2021134954A1 - 一种可拆卸式灌封工装 - Google Patents

一种可拆卸式灌封工装 Download PDF

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Publication number
WO2021134954A1
WO2021134954A1 PCT/CN2020/082522 CN2020082522W WO2021134954A1 WO 2021134954 A1 WO2021134954 A1 WO 2021134954A1 CN 2020082522 W CN2020082522 W CN 2020082522W WO 2021134954 A1 WO2021134954 A1 WO 2021134954A1
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Prior art keywords
potting
filling
sealing
inner cavity
cover plate
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PCT/CN2020/082522
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English (en)
French (fr)
Inventor
任志刚
林英哲
吴立华
董继勇
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南京磁谷科技股份有限公司
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Publication of WO2021134954A1 publication Critical patent/WO2021134954A1/zh

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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
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • 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

Definitions

  • the utility model relates to the technical field of motor stators, in particular to a detachable potting tooling.
  • the potting technology in the motor shell is widely used.
  • the so-called potting in the shell means that two main conditions are met at the same time. One is that the housing has been completely completed, and the other is that the stator has been offline; if the potting process is to be carried out, The two are indispensable. In actual production, it is often difficult to control the production schedule of the two to be exactly the same. The deviation of 10 to 15 days is completely possible. In this way, even if the stator is completed without a casing, it is still unable to enter the next potting process.
  • the existing outer shell potting is all integral mold potting, but there is a problem of difficult demolding after the potting is completed. Due to the certain bonding performance of the general potting glue, it is necessary to demold the stator from the axial direction.
  • the potting tool and the stator can only be separated by axial extrusion or strong pulling of the potting tool or stator.
  • release agent will be applied before potting, but the improvement effect is not large, and it will greatly increase the complexity of the process
  • the adhesion between the stator and the casing is stronger, plus the weight of the stator itself, and it is extremely easy to separate the stator from the potting tooling. Damage to the stator affects the quality, low production efficiency and low production qualification rate.
  • the utility model discloses a detachable potting tool to realize the vertical potting of the motor stator shell. Sealing, easy to disassemble the tooling after potting.
  • the utility model discloses a detachable potting tooling, which includes a pair of potting half cylinders, an inner cavity, a bottom cover plate and a core tube.
  • the bottom of the potting half cylinder is fixedly connected with the bottom cover plate, and the potting half is fixedly connected to the bottom cover plate.
  • the inside of the cylinder is coaxially provided with an inner cavity, there is a gap between the bottom end of the inner cavity and the bottom cover plate, and the inner cavity is coaxially provided with a core tube, and a cylindrical potting cavity is formed between the potting half cylinder and the inner cavity.
  • the bottom end of the tube passes through the gap at the bottom end of the inner cavity to communicate with the potting cavity; the potting cavity is provided with a stator to be potted. There is a transitional fit between the stator and the potting half cylinder, and the iron core end surface of the stator is connected to the potting cavity. The spigot surface of the half tube fits.
  • the core pipe is an inverted T-shaped pipe, and the pipes at both ends of the bottom are communicated with the potting cavity through the gap between the bottom end of the inner cavity and the bottom cover plate.
  • the device further includes a sealing gasket, and the sealing gasket for sealing the bottom of the potting tube is arranged at the connection between the bottom cover plate and the potting half cylinder.
  • the sealing gasket and the bottom cover plate are fixedly connected by a nut.
  • the potting half-cylinder has a semi-arc structure, the ends of the arcs all extend outward to form a platform-shaped connecting boss, and the connecting bosses of a pair of potting half-cylinders are locked and fixed by bolts.
  • the potting method of the present invention is a vertical potting outside the shell, which solves the problems of high process time cost and low productivity caused by potting inside the shell;
  • the potting glue is filled from bottom to top through the core tube, which can better eliminate the air in the winding and obtain a better potting effect;
  • Figure 1 is a schematic diagram of the general structure of the utility model
  • 1 is the potting half cylinder
  • 11 is the bolt
  • 12 is the end surface
  • 2 is the stator
  • 3 is the inner cavity
  • 4 is the gasket
  • 5 is the bottom cover
  • 6 is the nut
  • 7 is the core tube
  • 8 is the potting Cavity
  • Figure 2 is a front view of Figure 1;
  • Fig. 3 is an enlarged view of the stator in Fig. 1 and the stop surface of the potting half cylinder.
  • a detachable potting tool is characterized in that it includes a pair of potting half cylinders 1, an inner cavity 3, a bottom cover plate 5 and a core tube 7, and the bottom and bottom of the potting half cylinder 1
  • the cover plate 5 is fixedly connected, the potting half cylinder 1 is provided with an inner cavity 3 coaxially, and there is a gap between the bottom end of the inner cavity 3 and the bottom cover plate 5; the inner cavity 3 is coaxially provided with a core tube 7 for the potting half cylinder
  • a cylindrical potting cavity 8 is formed between 1 and the inner cavity 3.
  • the bottom end of the core tube 7 passes through the gap at the bottom of the inner cavity 3 to communicate with the potting cavity 8; wherein the core tube 7 is an inverted T-shaped pipe , The pipes at both ends of the bottom communicate with the potting cavity 8 through the gap between the bottom end of the inner cavity 3 and the bottom cover plate 5.
  • the potting cavity 8 is provided with a stator 2 to be potted.
  • the stator 2 and the potting half cylinder 1 are in transitional fit, and the iron core end surface of the stator 2 is attached to the stop surface 12 of the potting half cylinder 1.
  • the solution also includes a gasket 4, which is arranged at the connection of the bottom cover plate 5 and the potting half cylinder 1, the gasket 4 and the bottom cover plate 5 are fixedly connected by a nut 6, and the gasket 4 is used to seal the bottom of the potting tube .
  • the potting half cylinder 1 has a semi-arc structure, and the ends of the arcs extend outward to form a platform-shaped connecting boss.
  • the connecting bosses of a pair of potting half cylinders 1 pass through bolts 11 Lock and fix.
  • This solution is a vertical potting outside the shell, which avoids the high process time cost and low productivity caused by the potting inside the shell; at the same time, the connecting bosses of the potting half cylinder 1 are locked and fixed by bolts 11, and the potting is finished After the bolt 11 is removed, the tooling can be disassembled, which solves the problem of difficulty in potting and demolding outside the shell.
  • a detachable potting tooling of the utility model works as follows: first lay one of a pair of potting half cylinders 1 flat, and press the stator 2 and the inner cavity 3 and the core tube 7 to be potted. It is required to be put into the potting half cylinder 1; then another potting half cylinder 1 smeared with sealant is covered, in which the iron core end surface of the stator 2 is attached to the stop surface 12 of a pair of potting half cylinders 1. The connecting bosses of a pair of potting half cylinders 1 are locked and fixed by bolts 11. Then install the gasket 4 and the bottom cover 5, and erect the entire potting tooling.
  • the bottom end of the core tube 7 is connected to the potting tube, and the potting glue is injected into the core tube 7, and the potting glue passes through the core tube 7 Filling from bottom to top can better eliminate the air in the stator 2 windings and get a better potting effect.
  • the whole is put into a vacuum device for vacuum degassing treatment. After the potting glue is completely cured, the demolding process only needs to remove the bolt 11 and the shell can be separated.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

一种可拆卸式灌封工装，包括一对灌封半筒(1)、内腔(3)、底盖板(5)和心管(7)，所述灌封半筒(1)底部与底盖板(5)固定连接，灌封半筒(1)内部同轴设有内腔(3)，内腔(3)底端和底盖板(5)之间有间隙，内腔(3)内部同轴设有心管(7)，灌封半筒(1)和内腔(3)之间组成一圆柱形灌封空腔(8)，心管(7)的底端穿过内腔(3)底端的间隙与灌封空腔(8)连通；所述灌封空腔(8)内设有待灌封的定子(2)，定子(2)与灌封半筒(1)之间为过渡配合，定子(2)的铁芯端面与灌封半筒(1)的止口面(12)贴合。采用电机定子壳外立式灌封，避免了壳内灌封造成的工艺时间成本高、生产率低下的现象；同时灌封半筒的连接凸台之间通过螺栓锁紧固定，灌封结束后拆下螺栓即可拆卸工装，解决了壳外灌封脱模困难的问题。

Description

一种可拆卸式灌封工装 技术领域
本实用新型涉及电机定子技术领域，尤其涉及一种可拆卸式灌封工装。
背景技术
目前，为了保证电机良好的性能，需要对电机绕组进行灌封，来提高环境适应性。当前普遍使用电机壳内灌封技术，所谓壳内灌封，意味着同时具备两大主要条件，一是机壳已经完全做好，二是定子已经完成下线；要想进行灌封工序，二者缺一不可，实际生产中，往往很难控制二者的生产进度完全一致，偏差10到15天完全有可能，如此一来即使完成了定子没有机壳，依旧无法进入下一道灌封工序，因此必须等待机壳的生产结束，因此壳内灌封不利于生产进度的推进与生产效率的提高；同时壳内灌封的普遍适用性差，不利于批量化生产时的工序分工，有所降低生产效率，且无法满足空压机和磁悬浮电机壳体结构的灌封要求。
现有的壳外灌封均为整体模具灌封，但存在一个灌封结束后的脱模困难问题，由于一般的灌封胶存在一定的粘接性能，要想从轴向将定子脱模，只能是通过轴向挤压或者强力拉拽灌封工装或者定子的方式分离灌封工装与定子，一般会在灌封之前涂抹脱模剂，但改善效果不大，而且会极大地增加工艺复杂度与生产工时，倘若是铁芯较长，直径较大的定子，定子与机壳的粘接力更强，再加上定子本身的重量，而且在分离定子与灌封工装的过程中极容易损伤定子，影响到质量，生产效率低下与生产合格率低。
实用新型内容
技术目的：针对现有技术中壳外灌封时脱模困难造成生产效率低下与生产合格率低的缺陷，本实用新型公开了一种可拆卸式灌封工装，实现电机定子壳外立式灌封，便于灌封结束后拆卸工装。
技术方案：本实用新型公开了一种可拆卸式灌封工装，包括一对灌封半筒、内腔、底盖板和心管，灌封半筒底部与底盖板固定连接，灌封半筒内部同轴设有内腔，内腔底端和底盖板之间有间隙，内腔内部同轴设有心管，灌封半筒和内腔之间组成一圆柱形灌封空腔，心管的底端穿过内腔底端的间隙与灌封空腔连通；灌封空腔内设有待灌封的定子，定子与灌封半筒之间为过渡配合，定子的铁芯端面与灌封半筒的止口面贴合。
优选地，所述心管为一倒置T形管道，底部两端管道通过内腔底端与底盖板之间的 间隙与灌封空腔连通。
优选地，所述装置还包括密封垫，用于密封灌封管底部的密封垫设置于底盖板和灌封半筒连接处。
优选地，所述密封垫与底盖板通过螺母固定连接。
优选地，所述灌封半筒为半圆弧结构，圆弧末端均向外延伸并形成平台状的连接凸台，一对灌封半筒的连接凸台之间通过螺栓锁紧固定。
有益效果：
1、本实用新型的灌封方式为壳外立式灌封，解决了壳内灌封造成的工艺时间成本高、生产率低下的问题；
2、本实用新型中灌封胶通过心管由下往上填胶，更好的排除绕组中的空气，得到更好的灌封效果；
3、本实用新型中灌封半筒的连接凸台之间通过螺栓锁紧固定，灌封结束后拆下螺栓即可拆卸工装，解决了壳外灌封脱模困难的问题。
附图说明
图1为本实用新型的总结构示意图；
其中1为灌封半筒，11为螺栓，12为止口面，2为定子，3为内腔，4为密封垫，5为底盖板，6为螺母，7为心管，8为灌封空腔；
图2为图1的主视图；
图3为图1中定子与灌封半筒的止口面配合放大图。
具体实施方式
以下结合附图对本方案做进一步的说明。
如附图2所示，一种可拆卸式灌封工装，其特征在于：包括一对灌封半筒1、内腔3、底盖板5和心管7，灌封半筒1底部与底盖板5固定连接，灌封半筒1内部同轴设有内腔3，内腔3底端和底盖板5之间有间隙；内腔3内部同轴设有心管7，灌封半筒1和内腔3之间组成一圆柱形灌封空腔8，心管7的底端穿过内腔3底端的间隙与灌封空腔8连通；其中，心管7为一倒置T形管道，底部两端管道通过内腔3底端与底盖板5之间的间隙与灌封空腔8连通。
灌封空腔8内设有待灌封的定子2，定子2与灌封半筒1之间为过渡配合，定子2的铁芯端面与灌封半筒1的止口面12贴合。本方案还包括密封垫4，密封垫4设置于底 盖板5和灌封半筒1连接处，密封垫4与底盖板5通过螺母6固定连接，密封垫4用于密封灌封管底部。
如附图1所示，灌封半筒1为半圆弧结构，圆弧末端均向外延伸并形成平台状的连接凸台，一对灌封半筒1的连接凸台之间通过螺栓11锁紧固定。
如附图3所示，定子2与灌封半筒1之间为过渡配合，定子2的铁芯端面与灌封半筒1的止口面12贴合。
本方案为壳外立式灌封，避免了壳内灌封造成的工艺时间成本高、生产率低下的现象；同时灌封半筒1的连接凸台之间通过螺栓11锁紧固定，灌封结束后拆下螺栓11即可拆卸工装，解决了壳外灌封脱模困难的问题。
本实用新型的一种可拆卸式灌封工装，工作原理为：先将一对灌封半筒1的其中一个平躺放好，将待灌封的定子2和内腔3、心管7按要求放入灌封半筒1中；再将另一个抹上密封胶的灌封半筒1盖上，其中定子2的铁芯端面与一对灌封半筒1的止口面12贴合，一对灌封半筒1的连接凸台之间通过螺栓11锁紧固定。然后安装密封垫4和底盖板5，将整个灌封工装立起，此时心管7的底端与灌封管连通，向心管7内注入灌封胶，灌封胶通过心管7由下往上填胶，更好的排除定子2绕组中的空气，得到更好的灌封效果。整体放入真空设备中进行真空脱泡处理，灌封胶完全固化之后，脱模工序只需要将螺栓11拆除，壳体即可分离。
以上所述仅是本实用新型的优选实施方式，应当指出：对于本技术领域的普通技术人员来说，在不脱离本实用新型原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本实用新型的保护范围。

Claims (5)

  1. 一种可拆卸式灌封工装，其特征在于：包括一对灌封半筒(1)、内腔(3)、底盖板(5)和心管(7)，所述灌封半筒(1)底部与底盖板(5)固定连接，灌封半筒(1)内部同轴设有内腔(3)，内腔(3)底端和底盖板(5)之间有间隙，内腔(3)内部同轴设有心管(7)，灌封半筒(1)和内腔(3)之间组成一圆柱形灌封空腔(8)，心管(7)的底端穿过内腔(3)底端的间隙与灌封空腔(8)连通；所述灌封空腔(8)内设有待灌封的定子(2)，定子(2)与灌封半筒(1)之间为过渡配合，定子(2)的铁芯端面与灌封半筒(1)的止口面(12)贴合。
  2. 根据权利要求1所述的一种可拆卸式灌封工装，其特征在于：所述心管(7)为一倒置T形管道，底部两端管道通过内腔(3)底端与底盖板(5)之间的间隙与灌封空腔(8)连通。
  3. 根据权利要求1所述的一种可拆卸式灌封工装，其特征在于：还包括密封垫(4)，所述用于密封灌封管底部的密封垫(4)设置于底盖板(5)和灌封半筒(1)连接处。
  4. 根据权利要求3所述的一种可拆卸式灌封工装，其特征在于：所述密封垫(4)与底盖板(5)通过螺母(6)固定连接。
  5. 根据权利要求1所述的一种可拆卸式灌封工装，其特征在于：所述灌封半筒(1)为半圆弧结构，圆弧末端均向外延伸并形成平台状的连接凸台，一对灌封半筒(1)的连接凸台之间通过螺栓(11)锁紧固定。
PCT/CN2020/082522 2019-12-30 2020-03-31 一种可拆卸式灌封工装 WO2021134954A1 (zh)

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CN113904514A (zh) * 2021-09-27 2022-01-07 北京锐速嘉科技有限公司 一种无框电机分瓣式定子灌封工装及灌封工艺
CN114039433B (zh) * 2021-10-18 2023-05-30 智新科技股份有限公司 一种扁线电机的壳定子总成及其装配方法

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