WO2021134954A1

WO2021134954A1 - Filling and sealing tool capable of being disassembled

Info

Publication number: WO2021134954A1
Application number: PCT/CN2020/082522
Authority: WO
Inventors: 任志刚; 林英哲; 吴立华; 董继勇
Original assignee: 南京磁谷科技股份有限公司
Priority date: 2019-12-30
Filing date: 2020-03-31
Publication date: 2021-07-08
Also published as: CN211018596U

Abstract

Disclosed is a filling and sealing tool capable of being disassembled. The filling and sealing tool capable of being disassembled comprises a pair of filling and sealing half cylinders (1), an inner cavity (3), a bottom cover plate (5) and a core pipe (7), wherein the bottoms of the filling and sealing half cylinders (1) are fixedly connected to the bottom cover plate (5), the inner cavity (3) is coaxially provided in the filling and sealing half cylinders (1), a gap is provided between the bottom end of the inner cavity (3) and the bottom cover plate (5), the core pipe (7) is coaxially arranged inside the inner cavity (3), a cylindrical filling and sealing cavity (8) is provided between the filling and sealing half cylinders (1) and the inner cavity (3), and the bottom end of the core pipe (7) penetrates a gap at the bottom end of the inner cavity (3) to be in communication with the filling and sealing cavity (8); and a stator (2) to be filled and sealed is arranged in the filling and sealing cavity (8), the stator (2) is in transition fit with the filling and sealing half cylinders (1), and an end face of an iron core of the stator (2) is attached to spigot faces (12) of the filling and sealing half cylinders (1). Vertical filling and sealing outside an electric motor stator shell is used, such that the phenomena of a high process time cost and low productivity caused by filling and sealing in a shell are avoided; moreover, connecting bosses of the filling and sealing half cylinders are locked and fixed by means of bolts, and the tool can be disassembled by detaching the bolts after filling and sealing, such that the problem of difficulty in demolding of filling and sealing outside the shell is solved.

Description

A detachable potting tooling

Technical field

The utility model relates to the technical field of motor stators, in particular to a detachable potting tooling.

Background technique

At present, in order to ensure good performance of the motor, it is necessary to potting the motor windings to improve environmental adaptability. At present, 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. Therefore, it is necessary to wait for the end of the production of the casing, so the potting in the shell is not conducive to the advancement of the production schedule and the improvement of production efficiency; at the same time, the general applicability of the potting in the shell is poor, which is not conducive to the division of labor during mass production, which is reduced. Production efficiency, and can not meet the potting requirements of air compressor and magnetic suspension motor shell structure.

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. Generally, release agent will be applied before potting, but the improvement effect is not large, and it will greatly increase the complexity of the process In the case of a stator with a longer iron core and a larger diameter, 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.

Utility model content

Technical purpose: In view of the defects of low production efficiency and low production qualification rate caused by the difficulty of demolding during the outer shell potting in the prior art, 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.

Technical scheme: 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.

Preferably, 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.

Preferably, 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.

Preferably, the sealing gasket and the bottom cover plate are fixedly connected by a nut.

Preferably, 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.

Beneficial effects:

1. 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;

2. In the utility model, 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;

3. In the utility model, the connecting bosses of the potting half-cylinder are locked and fixed by bolts. After potting is completed, the bolts can be removed to disassemble the tooling, which solves the problem of difficulty in potting and demolding outside the shell.

Description of the drawings

Figure 1 is a schematic diagram of the general structure of the utility model;

Among them, 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, and 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.

Detailed ways

This solution will be further explained below in conjunction with the drawings.

As shown in Figure 2, 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 .

As shown in Figure 1, 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.

As shown in FIG. 3, there is a transitional fit between the stator 2 and the potting half cylinder 1, and the iron core end surface of the stator 2 is attached to the stop surface 12 of the potting half cylinder 1.

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. At this time, 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.

The above are only the preferred embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made. These improvements and Retouching should also be regarded as the protection scope of this utility model.

Claims

A detachable potting tooling, which is characterized in that it comprises a pair of potting half-tubes (1), an inner cavity (3), a bottom cover plate (5) and a core tube (7). The potting half-tubes (1), an inner cavity (3), and a core tube (7) are provided. 1) The bottom is fixedly connected with the bottom cover plate (5), the inner cavity (3) is coaxially arranged inside the potting half cylinder (1), 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), and a cylindrical potting cavity (8) is formed between the potting half cylinder (1) and the inner cavity (3). The bottom end of the core tube (7) The gap passing through the bottom end of the inner cavity (3) communicates with the potting cavity (8); the potting cavity (8) is provided with a stator (2) to be potted, the stator (2) and the potting half cylinder ( 1) There is a 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 detachable potting tool according to claim 1, characterized in that: the core tube (7) is an inverted T-shaped pipe, and the two ends of the pipe at the bottom pass through the bottom end of the inner cavity (3) and the bottom cover plate. The gap between (5) is communicated with the potting cavity (8).
The detachable potting tooling according to claim 1, characterized in that it further comprises a gasket (4), and the gasket (4) for sealing the bottom of the potting tube is arranged on the bottom cover plate (5). ) And the potting half-cylinder (1) connection.
The detachable potting tooling according to claim 3, characterized in that: the sealing gasket (4) and the bottom cover plate (5) are fixedly connected by a nut (6).
The detachable potting tooling according to claim 1, characterized in that: the potting half cylinder (1) has a semi-arc structure, and the ends of the arcs all extend outward to form a platform-shaped connecting boss , The connecting bosses of a pair of potting half cylinders (1) are locked and fixed by bolts (11).