Process equipment for glue injection of motor stator and glue injection system

Abstract

The utility model belongs to the field of motor manufacturing, and particularly relates to technological equipment for glue injection of a motor stator and a glue injection system. The process equipment comprises a base plate (1), a core rod ring (2), an outer ring cover (3) and an inner gland (4). Wherein the core rod ring (2) and the motor stator (6) can be well fixed by the inner gland (4) and the base plate (1) in the axial direction, and the motor stator (6) can be fixed by the core rod ring (2) and the outer ring cover (3) in the radial direction, so that the motor stator (6) does not deviate in the glue injection process. In addition, due to the fact that the determined glue injection space is formed between the core rod ring (2) and the outer ring cover (3), it can be guaranteed that the glue injection position is accurate. Therefore, the quality requirement of the motor stator (6) on the glue injection process can be well met.

Description

Technical Field

[0001] This utility model belongs to the field of motor manufacturing, specifically relating to the process equipment and glue injection system for motor stator glue injection. Background Technology

[0002] Frameless torque motors are one of the mainstream motors for humanoid robot joints. They consist of a stator and a rotor, eliminating the traditional motor housing and bearings. This compact design and efficient transmission are achieved by embedding the motor within the device. The rotor is typically an internal component, consisting of a rotating steel ring assembly with permanent magnets, directly mounted on the machine shaft. The stator is an external component, featuring steel laminations and copper windings, which generates electromagnetic force.

[0003] The motor stator has coil windings. Stator glue application is mainly used for stator insulation, fixation, heat dissipation, and moisture protection, ensuring reliable motor operation. To ensure the glue application process for the motor stator meets quality requirements, there is an urgent need for specialized equipment for this process. Utility Model Content

[0004] In view of this, this utility model proposes a process equipment and a glue injection system for motor stator glue injection, aiming to meet the quality requirements of motor stator for glue injection process.

[0005] In a first aspect, the process equipment for gluing a motor stator provided by this utility model includes a coil winding and a base plate, a mandrel ring, an inner pressure cover, and an outer ring cover. The mounting surface of the base plate has, from the center outwards, a circular platform, a first-order annular step, a second-order annular step, and an annular end face, with the heights of the circular platform, the first-order annular step, and the second-order annular step decreasing sequentially. The annular end face is higher than the first-order annular step, and the second-order annular step supports the motor stator. The mandrel ring is supported on the first-order annular step and is axially higher than the motor stator. After expansion and heating, its outer circumferential wall is tightly attached to the inner wall of the motor stator. The outer diameter of the inner pressure cover is between the inner and outer diameters of the mandrel ring and is pressed against the end face of the mandrel ring before being connected to the base plate. The inner pressure cover has at least one vent hole. The outer ring cover is connected to the annular end face, and its axial height is higher than the motor stator. An injection space is formed between the outer circumferential wall of the mandrel ring and the inner circumferential wall of the outer ring cover.

[0006] In this embodiment, the inner pressure cover and base plate effectively fix the mandrel ring and motor stator axially, while the mandrel ring and outer ring cover fix the motor stator radially, thus preventing positional displacement of the motor stator during the glue injection process. Furthermore, the defined glue injection space formed between the mandrel ring and outer ring cover ensures accurate glue injection positioning. Therefore, the quality requirements of the motor stator for the glue injection process can be well met.

[0007] In a preferred embodiment of the process equipment of this utility model, the top surfaces of the inner pressure cover and the base plate are provided with connecting holes, and bolts pass through the connecting holes of the inner pressure cover and connect to the connecting holes of the base plate.

[0008] In a preferred embodiment of the process equipment of this utility model, a connecting column is provided on the base plate, and a connecting hole is provided on the inner pressure cover. The connecting column passes through the connecting hole, and a bolt is connected to the threaded part of the connecting column to fasten the inner pressure cover.

[0009] In a preferred embodiment of the process equipment of this utility model, the inner wall of the mandrel ring is constructed as an open inclined surface at both axial ends, the inner pressure cover is formed with a protrusion that can extend into the interior of the mandrel ring, the protrusion is formed with a first inclined surface that cooperates with the inclined surface of the mandrel ring, and the circular platform of the base plate is formed with a second inclined surface that cooperates with the inclined surface of the mandrel ring.

[0010] In a preferred embodiment of the process equipment of this utility model, at least one graduated groove is provided on the upper part of the inner wall of one side of the corresponding glue injection space of the outer ring cover.

[0011] In a preferred embodiment of the process equipment of this utility model, the annular end face of the base plate and the outer ring cover are provided with a plurality of connecting holes, and bolts are passed through the connecting holes to connect the outer ring cover to the base plate.

[0012] In a preferred embodiment of the process equipment of this utility model, the process equipment further includes a push rod attachment. One axial end of the push rod attachment has a protruding post and an annular top abutment formed sequentially from the center outward. The protruding post is higher than the annular top abutment in the axial direction. The protruding post is adapted to extend into the mandrel ring. The annular top abutment is adapted to abut against the outer axial end of the mandrel ring.

[0013] Secondly, in the glue-applying system for motor stator provided by this utility model, the glue-applying system includes the process equipment described in any embodiment of the first aspect, as well as a constant temperature chamber and a glue-applying machine. The constant temperature chamber is structured to accommodate the process equipment, and the glue-applying machine is configured to supply glue to the glue-applying space of the process equipment. Attached Figure Description

[0014] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can more clearly understand the above and other features and advantages of the present invention, in which:

[0015] Figure 1 This is a schematic diagram of the external structure of the process equipment used for gluing the motor stator in this embodiment.

[0016] Figure 2 This is a cross-sectional view of the process equipment used for gluing the motor stator in this embodiment.

[0017] Figure 3 This is an exploded view of the motor stator used for gluing in this embodiment.

[0018] Figure 4 This is a diagram showing the usage state of the push rod accessory in this embodiment.

[0019] Figure 5 This is an exploded view showing the positional relationship between the push rod accessory, the mandrel ring, and the motor stator in this embodiment.

[0020] The accompanying figure is labeled as follows:

[0021] 1-Base plate; 11-Circular platform; 111-Second inclined surface; 12-First-level annular step; 13-Second-level annular step; 14-Annular end face;

[0022] 2-Mandrel ring; 21-Inclined surface;

[0023] 3-Outer ring cap; 31-Scale groove;

[0024] 4-Inner pressure cap; 41-Protrusion;

[0025] 5-Push rod accessory; 51-Protruding post; 52-Annular top abutment;

[0026] 6-Motor stator. Detailed Implementation

[0027] To make the objectives, technical solutions and advantages of this utility model clearer, the following embodiments are provided to further illustrate this utility model in detail.

[0028] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0029] This embodiment provides a process equipment and system for applying adhesive to a motor stator 6, primarily targeting the stator 6 of a frameless torque motor, which has coil windings. The adhesive material for the motor stator 6 can be epoxy resin.

[0030] In this embodiment, the dispensing system includes process equipment, a constant temperature chamber, and a dispensing machine. The constant temperature chamber is structured to accommodate the process equipment, and the dispensing machine is configured to supply adhesive to the dispensing space of the process equipment. The constant temperature chamber is used to dry the adhesive after dispensing is completed.

[0031] Reference Figures 1 to 3 The process equipment for gluing the motor stator 6 provided in this embodiment includes a base plate 1, a mandrel ring 2, an outer ring cover 3, and an inner pressure cover 4. (Refer to...) Figure 3 The mounting surface of the base plate 1 is provided with a circular platform 11, a first-level annular step 12, a second-level annular step 13 and an annular end face 14 in sequence from the center outwards. The height of the circular platform 11, the first-level annular step 12 and the second-level annular step 13 decreases in sequence. The annular end face 14 is higher than the first-level annular step 12. The second-level annular step 13 is used to support the motor stator 6.

[0032] Combination Figure 2 The mandrel ring 2 is supported on the first-stage annular step 12 and is axially higher than the motor stator 6. After expansion and heating, its outer circumferential wall is tightly attached to the inner wall of the motor stator 6. The mandrel ring 2 can be made of Teflon (PTFE) material. After being heated in a constant temperature chamber, the mandrel ring 2 expands and can tightly adhere to the inner wall of the motor stator 6.

[0033] The process equipment also includes an inner pressure cover 4. The outer diameter of the inner pressure cover 4 is between the inner diameter and the outer diameter of the mandrel ring 2. After being pressed against the end face of the mandrel ring 2, it is connected to the base plate 1. The inner pressure cover 4 is provided with at least one vent hole. During the glue injection process, after the glue enters the motor stator 6, the squeezed gas can be discharged from the vent hole of the inner pressure cover 4.

[0034] For example, in the connection method between the inner pressure cover 4 and the base plate 1, the top surfaces of the inner pressure cover 4 and the base plate 1 are provided with connection holes, and bolts pass through the connection holes of the inner pressure cover 4 and connect with the connection holes of the base plate 1; or, a connecting post is provided on the base plate 1, and a connection hole is provided on the inner pressure cover 4, the connecting post passes through the connection hole, and a bolt is connected to the threaded part of the connecting post to fasten the inner pressure cover 4.

[0035] Reference Figure 2The outer ring cover 3 is connected to the annular end face 14, and its axial height is higher than that of the motor stator 6. An injection space is formed between the outer circumferential wall of the mandrel ring 2 and the inner circumferential wall of the outer ring cover 3. For example, multiple connecting holes can be provided on the annular end face 14 of the base plate 1 and the outer ring cover 3, and bolts can pass through these connecting holes to connect the outer ring cover 3 to the base plate 1.

[0036] In this embodiment, the inner pressure cover 4 and the base plate 1 can effectively fix the mandrel ring 2 and the motor stator 6 axially, and the mandrel ring 2 and the outer ring cover 3 can fix the motor stator 6 radially, thereby preventing the motor stator 6 from shifting position during the glue injection process. Furthermore, since a defined glue injection space is formed between the mandrel ring 2 and the outer ring cover 3, accurate glue injection positioning is ensured. Thus, the quality requirements of the glue injection process for the motor stator 6 can be well met.

[0037] In a preferred embodiment of the process equipment in this example, referring to... Figure 3 The inner wall of the mandrel ring 2 is constructed with outwardly open inclined surfaces 21 at both axial ends. The inner pressure cover 4 has a protrusion 41 that can extend into the mandrel ring 2. The protrusion 41 has a first inclined surface that mates with the inclined surfaces 21 of the mandrel ring 2. Thus, the inner pressure cover 4 can not only press the mandrel ring 2 axially, but also mate well with the mandrel ring 2 radially. Furthermore, the circular platform 11 of the base plate 1 has a second inclined surface 111 that mates with the inclined surfaces 21 of the mandrel ring 2, also mates well with the mandrel ring 2 radially. This further improves the positioning effect of the process equipment on the motor stator 6 and ensures the quality of glue application.

[0038] In a preferred embodiment of the process equipment in this example, referring to... Figure 1 At least one graduated groove 31 is provided on the upper part of the inner wall of the corresponding glue injection space of the outer ring cover 3. In this embodiment, the amount of glue injected is fixed for a certain specification of motor stator 6. By setting the graduated groove 31, the accuracy of the glue injection amount can be ensured.

[0039] In a preferred embodiment of the process equipment in this example, referring to... Figure 4 and Figure 5 The process equipment also includes a push rod attachment 5. One axial end of the push rod attachment 5 has a protrusion 51 and an annular abutment 52 formed sequentially from the center outwards. The protrusion 51 is axially higher than the annular abutment 52. The protrusion 51 is adapted to extend into the mandrel ring 2, and the annular abutment 52 is adapted to abut against the outer axial end of the mandrel ring 2. Thus, after the glue injection is completed and the mandrel ring 2 has cooled, the push rod attachment 5 can be used to push the mandrel ring 2 out of the motor stator 6, allowing the motor stator 6 to detach from the mandrel ring 2 intact.

[0040] The usage process of the glue injection system and process equipment for glue injection of the motor stator in this embodiment is as follows:

[0041] Step 1: Install the mandrel ring 2, motor stator 6, outer ring cover 3 and inner pressure cover 4 on the base plate 1.

[0042] The second step is to heat the process equipment and the motor stator 6 together using the first temperature range of the constant temperature chamber, so that the mandrel ring 2 expands and sticks tightly to the inner ring of the motor stator 6.

[0043] The third step is to use a glue injection machine to inject glue into the glue injection space between the outer circumferential wall of the mandrel ring 2 and the inner circumferential wall of the outer ring cover 3, and the injected glue does not exceed the scale groove 31 of the outer ring cover 3.

[0044] Fourth step: After the glue is applied, the process equipment and motor stator 6 are heated together using the second temperature range of the constant temperature chamber to dry the glue that wraps the coil windings of the motor stator 6.

[0045] Step 5: Remove the inner pressure cover 4, outer ring cover 3 and base plate 1 in sequence, and take out the core ring 2 and motor stator 6 that are tightly attached together.

[0046] Step 6: Use push rod attachment 5 to push the mandrel ring 2 out of the motor stator 6 to obtain the motor stator 6 after glue injection.

[0047] It should be noted that although the base plate 1, outer ring cover 3 and inner pressure cover 4 in the attached drawings of this embodiment are all circular, their shapes can also be made into square or other shapes in actual implementation.

[0048] It should be understood that although this specification is described according to various embodiments, not every embodiment or implementation method contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0049] The above descriptions are merely illustrative embodiments of this application and are not intended to limit the scope of the embodiments of this application. Any equivalent changes, modifications, and combinations made by those skilled in the art without departing from the concept and principles of the embodiments of this application should fall within the protection scope of the embodiments of this application.

Claims

1. A process equipment for applying glue to a motor stator, wherein the motor stator (6) has coil windings, characterized in that, include: The base plate (1) has a mounting surface with a circular platform (11), a first-level annular step (12), a second-level annular step (13), and an annular end face (14) arranged sequentially from the center outwards. The heights of the circular platform (11), the first-level annular step (12), and the second-level annular step (13) decrease sequentially. The annular end face (14) is higher than the first-level annular step (12). The second-level annular step (13) is used to support the motor stator (6). The mandrel ring (2) is supported on the first-level annular step (12) and is axially higher than the motor stator (6). After expansion and heating, its outer circumferential wall is tightly attached to the inner wall of the motor stator (6). The inner pressure cover (4) has an outer diameter between the inner and outer diameters of the mandrel ring (2) and is pressed against the end face of the mandrel ring (2) and then connected to the base plate (1). The inner pressure cover (4) is provided with at least one exhaust hole. The outer ring cover (3) is connected to the annular end face (14) and its axial height is higher than that of the motor stator (6); An injection space is formed between the outer circumferential wall of the mandrel ring (2) and the inner circumferential wall of the outer ring cover (3).

2. The process equipment according to claim 1, characterized in that, The inner pressure cover (4) and the base plate (1) are provided with connection holes, and bolts are connected to the connection holes of the inner pressure cover (4) and the base plate (1) through the connection holes.

3. The process equipment according to claim 1, characterized in that, A connecting post is provided on the base plate (1), and a connecting hole is provided on the inner pressure cover (4). The connecting post passes through the connecting hole, and a bolt is connected to the threaded part of the connecting post to fasten the inner pressure cover (4).

4. The process equipment according to claim 1, characterized in that, The inner wall of the mandrel ring (2) is constructed as an open inclined surface (21) at both ends of the axial direction. The inner pressure cover (4) is formed with a protrusion (41) that can extend into the interior of the mandrel ring (2). The protrusion (41) is formed with a first inclined surface that cooperates with the inclined surface (21) of the mandrel ring (2). The circular platform (11) of the base plate (1) is formed with a second inclined surface (111) that cooperates with the inclined surface (21) of the mandrel ring (2).

5. The process equipment according to claim 1, characterized in that, At least one graduated groove (31) is provided on the upper part of the inner wall of the corresponding glue injection space of the outer ring cover (3).

6. The process equipment according to claim 1, characterized in that, The annular end face (14) of the base plate (1) and the outer ring cover (3) are provided with multiple connecting holes. Bolts pass through the connecting holes to connect the outer ring cover (3) to the base plate (1).

7. The process equipment according to claim 1, characterized in that, Also includes: The push rod attachment (5) has a protruding post (51) and an annular top abutment (52) formed sequentially from the center outward at one end of its axial direction. The protruding post (51) is higher than the annular top abutment (52) in the axial direction. The protruding post (51) is adapted to extend into the mandrel ring (2). The annular top abutment (52) is adapted to abut against the outer end of the mandrel ring (2) in the axial direction.

8. A glue-applying system for applying glue to an electric motor stator, characterized in that, include: The process equipment as described in any one of claims 1 to 7; A constant temperature chamber, the structure of which is adapted to house the process equipment; A dispensing machine is configured to supply adhesive to the dispensing space of the process equipment.

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