TWM582426U - Glue filler for magnetic steel tank of motor rotor iron core - Google Patents

Abstract

The invention relates to a motor rotor core magnetic steel groove filling device, which is used for filling glue between a rotor core magnetic steel slot of a motor and a magnetic steel gap; the motor rotor core magnetic steel groove filling device comprises a plurality of injection molding units Each injection unit corresponds to one or two sets of magnetic steel grooves, and each injection unit is arranged corresponding to the magnetic steel groove along the circumferential direction of the motor rotor; the injection unit is arranged outside the magnetic steel groove and close to the position of the magnetic steel groove Or in the projection direction of the magnetic steel trough, the injection opening of each injection unit is disposed below the corresponding magnetic steel trough. The author has simple structure, ingenious design, good reliability and strong material-saving ability, which can realize reliable, effective and economical automatic magnetic steel tank filling.

Description

Motor rotor core magnetic steel tank filling device

The invention belongs to the field of glue injection equipment, and relates to a rotor core magnet steel tank filling device of a motor rotor, which is mainly used for injecting glue into a gap between a rotor core of a motor and a magnetic steel, thereby firmly and stably magnetizing the magnetic steel. It is fixed in the magnetic steel groove reserved by the rotor core.

It is well known that a plurality of magnetic steels are evenly arranged on the inner circumferential surface of the permanent magnet rotor of the motor, and a fixed gap is left between the magnetic steel and the slot of the rotor core. During assembly, the magnetic steel is inserted into the slot of the rotor core. Fix it. In order to prevent the rotor from being loosened during high-speed operation, the magnetic steel is loose, which poses a safety hazard and the vibration of the magnetic steel in the slot generates noise. Therefore, it is necessary to fill the gap of the magnetic steel with a thermosetting resin colloid to fix the magnetic steel. . Among them, the thermosetting resin refers to a resin which undergoes chemical change after heating, is gradually hardened, and is not softened by heat, and is insoluble.

At present, the existing injection molding methods are roughly divided into two types: the first injection molding method uses manual injection molding, and the manual participation of the manual injection molding is high, and automation cannot be achieved, and not only the injection efficiency is low, but also the injection position is easily caused. Inaccurate, uniformity is not high; the second injection method uses the existing injection molding device for injection, but the injection molding flow of the existing injection molding device is too long, and the use of a large piece of rubber particles is not only easy to cause colloid waste It is also easy to cause uneven heating of the colloid, or even premature curing due to the flow of the colloid and the reaction time is too long, and finally the gap of the magnetic steel cannot be filled. In addition, the prior art usually fills the colloid from top to bottom, which easily leads to air. Residual inside the gap of the magnetic steel trough, resulting in uneven filling of the colloid and not tight.

Therefore, how to solve the shortcomings of the above prior art is the main research topic of this creation.

The present invention provides a motor rotor core magnetic steel tank filling device, the purpose of which is to solve the prior art that manual injection can not achieve automation, not only the injection efficiency is low, but also the injection position is not accurate and the uniformity is not high. The problem, as well as solving the problem of using the existing glue injection device, is that the fluid is too long, the colloid is wasted, the colloid is heated unevenly, and even solidified in advance, eventually leading to the problem that the magnetic steel gap cannot be filled.

In order to achieve the above objectives, the technical means adopted in this creation is: a motor rotor core magnetic steel groove filling device for potting between the rotor core of the motor and the gap between the magnetic steel; the rotor core of the motor The tank filling device comprises a plurality of glue injection units, each of which corresponds to one or two sets of magnetic steel grooves, and each glue injection unit is arranged corresponding to the magnetic steel groove in the circumferential direction of the motor rotor; the injection unit is arranged on the magnetic The outer side of the steel trough is close to the position of the magnetic steel trough, or in the projection direction of the magnetic steel trough, and the injection opening of each injection unit is disposed below the corresponding magnetic steel trough.

The relevant content in the above technical means is explained as follows:

In the above method, the glue injection unit comprises a glue injection flow path, a glue injection head, a plunger barrel and a plunger; the glue injection flow path is located above the glue injection head and communicates with the glue injection head, the glue injection The head is located at the top end of the plunger barrel and is in communication with the interior of the plunger barrel; the plunger is disposed within the plunger barrel and is slidable up and down relative to the plunger barrel.

2. In the above method, the glue injection unit further comprises a flow channel plate, wherein the glue injection flow channel is a channel uniformly distributed along the circumference of the magnetic steel groove corresponding to the rotor core of the motor on the flow channel plate.

In the above method, the glue injection unit further comprises a glue injection plate, wherein the glue injection port is disposed on the glue injection plate, and the glue injection port is a vertically arranged taper drainage channel for the flow. The colloid in the injection flow passage of the road plate is drained into the magnetic steel groove through the drainage passage, and in the assembled state, the rubber injection plate is stacked above the flow passage plate.

5. In the above method, the glue injection port of each injection unit is disposed directly below the gap between the magnetic steel groove and the magnetic steel.

6. In the above method, the set of magnetic steel troughs comprises an even number of magnetic steel troughs.

The working principle and advantages of this creation are: due to the use of multiple injection units, each injection unit corresponds to one or two sets of magnetic steel slots, and each injection unit is arranged along the circumference of the motor rotor corresponding to the magnetic steel groove. The glue unit is arranged outside the magnetic steel groove and close to the position of the magnetic steel groove, or in the projection direction of the magnetic steel groove, thereby realizing the replacement of the original large piece of rubber into a plurality of smaller rubber particles, and realizing the injection molding. The shortest path of the flow path, and because the injection port of each injection unit is disposed below the corresponding magnetic steel groove, the bottom-up filling method increases the tightness of the colloid filling in the gap of the magnetic steel groove. Sexuality increases the reliability of magnet steel fixation. Therefore, it is effective to avoid colloid waste, uneven heat of colloid, and solve the problem of pre-curing due to colloidal flow and long reaction time. The creation structure is simple, the concept is ingenious, and the reliability is solved. Good, strong material-saving, can achieve reliable, effective, environmentally friendly automatic magnetic steel tank filling.

The creation is further described below in conjunction with the drawings and embodiments:

Embodiment 1: An electric motor rotor core magnetic steel tank filling device.

Referring to FIGS. 1-5 and 8-9, the glue filling device of the present embodiment is used for potting between the rotor core of the motor 1, the gap between the magnetic steel slot 11 and the magnetic steel 12, wherein the rotor core 1 is composed of The four-section core segments 10 are laminated.

The glue filling device comprises a plurality of glue injection units 2, in this embodiment, the glue injection unit 2 is set to eight, and each glue injection unit 2 corresponds to one or two sets of magnetic steel grooves 11, in this embodiment, Each of the glue injection units 2 corresponds to a set of magnetic steel grooves. Generally, one set of magnetic steel grooves includes an even number of magnetic steel grooves 11. In the present embodiment, four magnetic steel grooves 11 are provided, and in fact, two The six equal-numbered magnetic steel grooves 11 are not limited to the number of the present application. Wherein, each of the glue injection units 2 is arranged corresponding to the magnetic steel groove 11 in the circumferential direction of the rotor core 1 of the motor.

The glue injection unit 2 is located in the projection direction of the magnetic steel groove 11 , and the glue injection ports 25 of each injection unit 2 are disposed below the corresponding magnetic steel grooves 11 . In this embodiment, the glue injection unit 2 is disposed in the projection direction of the magnetic steel groove 11, and the glue injection port 25 of each injection unit 2 is disposed directly below the corresponding magnetic steel groove 11, at this time, the waste Most of the three overlap with the magnetic steel groove 11 in the projection direction. In this way, the injection flow path 26 can be greatly shortened, and even the injection flow path 26 can be reduced to zero.

Specifically, the glue injection unit 2 includes a glue injection flow path 26, a glue injection head 22, a plunger barrel 21, and a plunger 20; the glue injection head 22 is located at the top end of the plunger barrel 21, and the glue injection flow path 26 The plunger 20 is disposed inside the plunger barrel 21; the plunger 20 is disposed in the plunger barrel 21 and can slide up and down with respect to the plunger barrel 21; the injection port 25 is located at the top end of the injection head 22, and is coupled with the injection flow path 26 connected. In this embodiment, the driving device is further configured to drive the plunger 20 to move up and down. The driving device of the embodiment adopts a servo motor, and controls the speed segment to drive the plunger 20 by controlling the speed of the servo motor. The plunger barrel 21 moves upward, thereby pressing the thermosetting resin colloid in the plunger barrel 21, and the colloid enters between the magnetic steel groove 11 and the gap of the magnetic steel 12 through the injection flow path 26, and the magnet is solidified to be magnetic. The steel 12 is firmly fixed in the magnetic steel groove 11.

Referring to FIG. 1 and FIG. 8-9, in the embodiment, the glue injection unit further includes a flow channel plate 23 and a glue injection plate 24, and the glue flow channel 26 is formed on the flow channel plate 23 corresponding to the rotor of the motor. The magnetic steel groove 11 of the core 1 is uniformly distributed along the circumference, and the glue injection opening 25 is disposed on the rubberized plate 24, and is a vertically arranged tapered drainage channel (the diameter is gradually reduced from bottom to top) for The colloid in the injection flow path 26 on the flow path plate 23 is drained into the magnetic steel groove 11 through the drainage passage, and is specifically drained into the gap between the magnetic steel groove 11 and the magnetic steel 12. In the assembled state, the rubberized sheet 24 is laminated above the flow path plate 23. In addition, in fact, there is also a means for arranging the glue injection port 25 on the flow path plate 23, and forming a drainage channel protrusion by injection molding on the flow path plate 23, and only for injecting the flow path on the flow path plate 23 The colloid in 26 can be drained into the through hole of the rubber sheet 24, and is not limited to the means of the embodiment.

Embodiment 2: A motor rotor core magnetic steel tank filling device.

Referring to Figures 6-7, the rest is the same as Embodiment 1, except that the glue injection unit 2 is disposed outside the magnetic steel tank 11 and near the position of the magnetic steel tank 11, in this manner, the injection flow path 26 There is a certain small-sized extension channel, that is, an extended glue injection flow path. At this time, the glue injection port 25 is located on the extension channel, and the waste rubber 3 in FIG. 6 and FIG. 7 simultaneously has an extended branch portion. Compared with the first embodiment, the glue is wasteful, but the purpose of the shorter distance injection can also be achieved, so that the reliable injection can be realized more than the prior art, and the colloid can be saved relative to the prior art.

The above embodiments are merely illustrative of the technical concept and features of the present invention. The purpose of the present invention is to enable those skilled in the art to understand the contents of the present invention and implement it according to the present invention, and the scope of protection of the present invention is not limited thereby. Equivalent changes or modifications made in accordance with the spirit of this creation shall be covered by the scope of this creation.

1‧‧‧Rotor core

10‧‧‧core segment

11‧‧‧Magnetic steel trough

12‧‧‧Magnetic steel

2‧‧‧Glue injection unit

20‧‧‧Plunger

21‧‧‧Plunger

22‧‧‧Injection head

23‧‧‧Flow channel board

24‧‧‧Injection sheet

25‧‧‧ injection port

26‧‧‧Injection flow channel

3‧‧‧Waste rubber

1 is a three-dimensional exploded view of the slotting glue filling device with the waste rubber in the glue filling device of the first embodiment;  Figure 2 is a perspective view of the rotor core of the first embodiment;  Figure 3 is a partial perspective view of the tank filling device of the first embodiment of the present invention;  4 is a top plan view showing the positional relationship between the waste rubber and the magnetic steel groove in the first embodiment;  Figure 5 is a bottom view showing the positional relationship between the waste rubber and the magnetic steel groove in the first embodiment;  6 is a plan view showing the positional relationship between the waste rubber and the magnetic steel groove in the second embodiment of the present invention;  Figure 7 is a bottom view of the positional relationship between the waste rubber and the magnetic steel trough in the second embodiment;  Figure 8 is a partial perspective view of the glue filling device of the first embodiment of the present invention;  FIG. 9 is a partial perspective view of the potting device of the first embodiment of the present invention.  

Claims (6)

The utility model relates to a rotor core magnet steel tank filling device for a rotor, which is used for filling a gap between a magnetic steel groove of a rotor core of a motor and a magnetic steel. The rotor core magnetic steel groove filling device of the motor is characterized by:  The utility model comprises a plurality of glue injection units, each glue injection unit corresponding to one or two sets of magnetic steel grooves, and each glue injection unit is arranged corresponding to the magnetic steel groove along the circumferential direction of the motor rotor;  The glue injection unit is disposed outside the magnetic steel groove and close to the position of the magnetic steel groove, or in a projection direction of the magnetic steel groove, and the injection opening of each injection unit is set in the corresponding magnetic steel Below the slot.   The motor rotor core magnetic steel tank filling device according to claim 1, wherein the glue injection unit comprises a glue injection flow path, a glue injection head, a plunger barrel and a plunger; the injection flow path is located at the Above the plastic head and communicating with the glue injection head, the glue injection head is located at a top end of the plunger barrel and communicates with the interior of the plunger barrel; the plunger is disposed in the plunger barrel , can slide up and down with respect to the plunger barrel. The motor rotor core magnetic steel tank filling device according to claim 2, wherein the glue injection unit further comprises a flow channel plate, wherein the glue injection flow channel is formed on the flow channel plate corresponding to the motor rotor iron A channel in which the core of the magnetic steel groove is evenly distributed along the circumference. The motor rotor core magnetic steel tank filling device according to claim 3, wherein the glue injection unit further comprises a rubber injection plate, wherein the glue injection port is disposed on the rubber injection plate and is vertical Having a taper-shaped drainage channel for draining the colloid in the injection flow channel on the flow channel plate into the magnetic steel channel through the drainage channel, in an assembled state, The rubber sheet is laminated above the flow path plate. The motor rotor core magnetic steel tank filling device according to claim 1 or 4, wherein the glue injection port of each injection unit is disposed directly below the gap between the magnetic steel groove and the magnetic steel. The motor rotor core magnetic steel tank filling device according to claim 1, wherein the set of magnetic steel grooves comprises an even number of magnetic steel grooves.