Glue pouring tool for magnetic suspension motor

Abstract

The utility model relates to the technical field of molecular pumps, in particular to a glue pouring tool for a magnetic suspension motor. The utility model provides a glue pouring tool for a magnetic suspension motor, the magnetic suspension motor comprises a shell and a pump core assembly, the shell is provided with a containing cavity, the shell comprises a first end and a second end in the axial direction of the shell, the pump core assembly is arranged in the containing cavity, a first hole is defined by the pump core assembly, and the glue pouring tool comprises a mandrel and a gland; the core shaft comprises a core shaft body and a core shaft cover plate, the core shaft body is arranged in the first hole, the core shaft cover plate is arranged at one end of the core shaft body in the axial direction of the core shaft body, and the core shaft cover plate is fixed to the first end; the gland is fixed to the second end, the gland is suitable for abutting against the pump core assembly, and a second hole communicated with the containing cavity is formed in the gland. The technical problem that the glue filling condition cannot be observed in the glue filling process is solved, the purpose that the glue filling liquid level can be observed is achieved, and meanwhile the probability that glue overflows is reduced.

Description

Technical Field

[0001] This application relates to the field of molecular pump technology, and more particularly to a potting fixture for a magnetic levitation motor. Background Technology

[0002] The pump core of the magnetic levitation molecular pump consists of a radial magnetic A assembly, a motor stator assembly, a radial magnetic B assembly, a radial transmission assembly, and a housing. The radial magnetic A assembly, motor stator assembly, radial magnetic B assembly, and radial transmission assembly are installed into the housing, followed by epoxy resin encapsulation. Epoxy resin is used to encapsulate the radial magnetic A assembly, motor stator assembly, radial magnetic B assembly, and radial transmission assembly into a single structure. The epoxy resin encapsulation process requires pressing these components together, which necessitates the use of a tooling epoxy resin cap and an epoxy resin mandrel. However, during epoxy resin encapsulation, because the epoxy resin is black and the liquid level increases from bottom to top, it is impossible to observe whether the epoxy resin level has reached the required position. Utility Model Content

[0003] This application provides a glue-pouring fixture for magnetic levitation motors, which solves the technical problem of not being able to observe the glue-pouring process, achieves the purpose of being able to observe the glue level, and reduces the probability of glue overflow.

[0004] To achieve the above objectives, the main technical solutions adopted in this application include:

[0005] This application provides a potting fixture for a magnetic levitation motor. The magnetic levitation motor includes a housing and a pump core assembly. The housing has a receiving cavity. Along the axial direction of the housing, the housing includes a first end and a second end. The pump core assembly is disposed in the receiving cavity and surrounds a first hole. The potting fixture includes a mandrel and a pressure cap. The mandrel includes a mandrel body and a mandrel cover plate. The mandrel body is disposed in the first hole. Along the axial direction of the mandrel body, the mandrel cover plate is disposed at one end of the mandrel body and is fixed to the first end. The pressure cap is fixed to the second end and is adapted to press against the pump core assembly. The pressure cap has a second hole communicating with the receiving cavity.

[0006] The dispensing fixture proposed in this application has a mandrel body disposed in a first hole defined by the pump core assembly, and a mandrel cover plate fixed to the first end of the housing for pressing and sealing the pump core assembly at the first end; a pressure cap is fixed to the second end and presses against the pump core assembly. The pressure cap has a second hole communicating with the receiving cavity, through which the position of the dispensing liquid level can be observed during the dispensing process, reducing glue overflow.

[0007] Optionally, along the axial direction of the mandrel body, the gland has a first side and a second side disposed opposite to each other, and the second hole passes through the first side and the second side.

[0008] Optionally, there are multiple second holes, which are spaced apart along the circumference of the mandrel body.

[0009] Optionally, along the axial direction of the mandrel body, the projection of the second hole does not overlap with the projection of the mandrel body.

[0010] Optionally, the gland includes a gland body and a mounting portion. Along the axial direction of the spindle body, the gland body is disposed opposite to the pump core assembly. The mounting portion is disposed on the gland body and protrudes from the outer peripheral surface of the gland body. The second hole is disposed on the gland body. The mounting portion is fixedly connected to the housing.

[0011] Optionally, there are multiple mounting portions, which are spaced apart along the circumference of the mandrel body.

[0012] Optionally, the number of mounting portions is the same as the number of second holes, and the mounting portions are arranged opposite to the corresponding second holes along the radial direction of the mandrel body.

[0013] Optionally, the pressure cap is further provided with a third hole, which passes through the pressure cap along the axial direction of the mandrel body, and is disposed opposite to the mandrel body.

[0014] Optionally, a portion of the mandrel body fits into the third hole.

[0015] Optionally, the first end is provided with a first opening communicating with the receiving cavity;

[0016] Along the radial direction of the mandrel body, the mandrel cover plate protrudes from the outer peripheral surface of the mandrel body to block the first opening. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the dispensing fixture used in this application;

[0019] Figure 2 This is a schematic diagram of the structure of the cover in this application.

[0020] [Explanation of Labels in the Attached Image]

[0021] 1: Shell; 10: Receiving cavity; 11: First end; 110: First opening; 12: Second end;

[0022] 2: Pump core assembly; 20: First hole;

[0023] 3: Mandrel; 31: Mandrel body; 32: Mandrel cover plate;

[0024] 4: Pressure cap; 40: Second hole; 41: First side; 42: Second side; 43: Pressure cap body; 44: Mounting part; 45: Third hole. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0027] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0030] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0031] The glue-filling process requires pressing together the radial magnet A assembly, motor stator assembly, radial magnet B assembly, and radial transmission assembly. Pressing these components together requires a glue-filling cap and a glue-filling mandrel. However, during glue-filling, because the epoxy resin is black, the glue level increases from bottom to top. While the glue level can only be observed from above to ensure it reaches the required position, the glue-filling process inside the housing is obstructed by the mandrel and cap, frequently resulting in glue overflow, which is difficult to clean. Therefore, a tooling is needed that allows observation of the glue-filling process inside the housing to reduce glue overflow. The radial magnet A and radial magnet B assemblies can be magnetic levitation bearing assemblies.

[0032] In view of this, refer to Figure 1 and Figure 2 This application provides a potting fixture for a magnetic levitation motor. The magnetic levitation motor includes a housing 1 and a pump core assembly 2. The housing 1 has a receiving cavity 10. Along the axial direction of the housing 1, the housing 1 includes a first end 11 and a second end 12. The pump core assembly 2 is disposed in the receiving cavity 10 and surrounds a first hole 20. The potting fixture includes a mandrel 3 and a pressure cap 4. The mandrel 3 includes a mandrel body 31 and a mandrel cover plate 32. The mandrel body 31 is disposed in the first hole 20. Along the axial direction of the mandrel body 31, the mandrel cover plate 32 is disposed at one end of the mandrel body 31 and is fixed to the first end 11. The pressure cap 4 is fixed to the second end 12 and is adapted to press against the pump core assembly 2. The pressure cap 4 has a second hole 40 communicating with the receiving cavity 10.

[0033] Specifically, the pump core assembly 2 is disposed within the receiving cavity 10 of the housing 1, the mandrel body 31 is disposed in the first hole 20 defined by the pump core assembly 2, and the mandrel cover plate 32 presses against the pump core assembly 2 at the first end 11 of the housing 1 and seals the housing 1 to reduce the outflow of adhesive. The pressure cap 4 presses against the pump core assembly 2 at the second end 12 of the housing 1, wherein the pressure cap 4 is provided with a second hole 40 communicating with the receiving cavity 10, through which the pump core assembly 2 inside the receiving cavity 10 and the liquid level of the adhesive during the dispensing process can be seen.

[0034] The dispensing fixture proposed in this application has a mandrel body 31 disposed in the first hole 20 defined by the pump core assembly 2, and a mandrel cover plate 32 fixed to the first end 11 of the housing 1 for pressing and sealing the pump core assembly 2 at the first end 11; a pressure cap 4 is fixed to the second end 12 and presses against the pump core assembly 2. The pressure cap 4 is provided with a second hole 40 communicating with the receiving cavity 10, through which the position of the dispensing liquid level can be observed during the dispensing process, reducing glue overflow.

[0035] Optionally, along the axial direction of the mandrel body 31, the gland 4 has a first side 41 and a second side 42 disposed opposite to each other, and a second hole 40 penetrates the first side 41 and the second side 42. The second hole 40 penetrates the first side 41 and the second side 42, and the pump core assembly 2 inside the housing 1 can be seen through the second hole 40. During the glue dispensing process, the position of the glue liquid level can be observed through the second hole 40, reducing glue overflow.

[0036] Optionally, there are multiple second holes 40, spaced apart along the circumference of the mandrel body 31. The multiple second holes 40 on the cap 4 allow for clearer observation of the glue level from multiple angles during the glue-pouring process, reducing glue overflow.

[0037] Optionally, the projection of the second hole 40 along the axial direction of the mandrel body 31 does not overlap with the projection of the mandrel body 31. That is, along the axial direction of the mandrel body 31, the second hole 40 does not correspond to the mandrel body 31, the mandrel 3 does not block the second hole 40, and the pump core assembly 2 inside the housing 1 and the situation of the glue level during the glue filling process can be observed through the second hole 40.

[0038] It should be understood that, along the axial direction of the mandrel body 31, the projection of the second hole 40 should fall within the projection of the pump core assembly 2 and should not overlap with the projection of the mandrel body 31.

[0039] Optionally, the gland 4 includes a gland body 43 and a mounting part 44. Along the axial direction of the spindle body 31, the gland body 43 is disposed opposite to the pump core assembly 2. The mounting part 44 is disposed on the gland body 43 and protrudes from the outer peripheral surface of the gland body 43. The second hole 40 is disposed on the gland body 43. The mounting part 44 is fixedly connected to the housing 1.

[0040] Specifically, the pressure cap 4 includes a pressure cap body 43 and a mounting portion 44 protruding from the outer peripheral surface of the pressure cap body 43. The mounting portion 44 is provided with a threaded hole for fixing to the housing 1. The pressure cap 4 is fixedly connected to the housing 1 by fasteners passing through the threaded hole. The pressure cap body 43 is disposed opposite to the pump core assembly 2, and the pressure cap body 43 presses against the pump core assembly 2 to compress the pump core assembly 2.

[0041] Optionally, there are multiple mounting portions 44, which are spaced apart along the circumference of the mandrel body 31. The multiple mounting portions 44 spaced apart along the circumference of the gland body 43 reduce the amount of material used in the mounting portions 44, thereby saving costs.

[0042] Optionally, the number of mounting portions 44 is the same as the number of second holes 40, and the mounting portions 44 are arranged opposite to the corresponding second holes 40 along the radial direction of the spindle body 31. The gland body 43 opposite to the position of the mounting portion 44 is stronger than the gland body 43 without the mounting portion 44. After the second hole 40 is provided at the position corresponding to the mounting portion 44, the damage to the gland 4 caused by the second hole 40 can be reduced, thereby reducing the impact on the clamping force of the pump core assembly 2.

[0043] Optionally, the gland 4 is also provided with a third hole 45, which passes through the gland 4 along the axial direction of the spindle body 31 and is positioned opposite to the spindle body 31. One end of the spindle body 31 has a spindle cover plate 32, and the other end of the spindle body 31 corresponds to the third hole 45, so that the force of the gland 4 can be applied more to the pump core assembly 2, while keeping the spindle 3 axially stable and reducing the impact of spindle 3 misalignment on the pump core assembly 2.

[0044] Optionally, a portion of the mandrel body 31 fits into the third hole 45. One end of the mandrel body 31 has a mandrel cover plate 32, and the other end of the mandrel body 31 fits into the third hole 45, so that the force of the pressure plate 4 can be applied more to the pump core assembly 2, and the mandrel 3 can be better kept axially stable, reducing the impact of mandrel 3 misalignment on the pump core assembly 2.

[0045] Optionally, the first end 11 is provided with a first opening 110 communicating with the receiving cavity; along the radial direction of the mandrel body 31, the mandrel cover plate 32 protrudes from the outer peripheral surface of the mandrel body 31 to seal the first opening 110. The mandrel cover plate 32 protrudes from the outer peripheral surface of the mandrel body 31 and seals the first opening 110, which can reduce glue leakage during the glue pouring process.

[0046] In this application, after the mandrel 3 is installed in the first hole 20 of the pump core assembly 2, the third hole 45 of the pressure cap 4 is fitted with the mandrel 3, and then the pressure cap 4 is pressed tightly against the pump core assembly 2. The parallelism of the pressure cap 4 is ensured by measuring the distance from the upper end face of the pressure cap 4 to the upper end face of the housing, ensuring that the pump core assembly 2 is pressed flat and does not skew. During the glue dispensing process, the glue dispensing is observed and confirmed through the second hole 40 to reduce glue overflow.

[0047] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0048] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0049] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

[0050] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A potting fixture for a magnetic levitation motor, the magnetic levitation motor comprising a housing and a pump core assembly, the housing having a receiving cavity, the housing including a first end and a second end along the axial direction of the housing, the pump core assembly disposed in the receiving cavity, the pump core assembly surrounding a first hole, characterized in that, The dispensing fixture includes: A mandrel includes a mandrel body and a mandrel cover plate. The mandrel body is disposed in the first hole along the axial direction of the mandrel body. The mandrel cover plate is disposed at one end of the mandrel body and is fixed to the first end. A pressure cap is fixed to the second end, the pressure cap being adapted to press against the pump core assembly, and the pressure cap having a second hole communicating with the receiving cavity.

2. The dispensing fixture according to claim 1, characterized in that, Along the axial direction of the mandrel body, the gland has a first side and a second side disposed opposite to each other, and the second hole passes through the first side and the second side.

3. The dispensing fixture according to claim 2, characterized in that, There are multiple second holes, which are spaced apart along the circumference of the mandrel body.

4. The dispensing fixture according to any one of claims 1-3, characterized in that, Along the axial direction of the mandrel body, the projection of the second hole does not overlap with the projection of the mandrel body.

5. The dispensing fixture according to claim 4, characterized in that, The gland includes a gland body and a mounting part. Along the axial direction of the spindle body, the gland body is disposed opposite to the pump core assembly. The mounting part is disposed on the gland body and protrudes from the outer peripheral surface of the gland body. The second hole is disposed on the gland body. The mounting part is fixedly connected to the housing.

6. The dispensing fixture according to claim 5, characterized in that, There are multiple mounting parts, which are spaced apart along the circumference of the mandrel body.

7. The dispensing fixture according to claim 6, characterized in that, The number of mounting portions is the same as the number of second holes, and the mounting portions are arranged opposite to the corresponding second holes along the radial direction of the mandrel body.

8. The dispensing fixture according to claim 1, characterized in that, The pressure cap is also provided with a third hole, which passes through the pressure cap along the axial direction of the mandrel body, and is disposed opposite to the mandrel body.

9. The dispensing fixture according to claim 8, characterized in that, A portion of the mandrel body fits into the third hole.

10. The dispensing fixture according to claim 1, characterized in that, The first end is provided with a first opening communicating with the receiving cavity; Along the radial direction of the mandrel body, the mandrel cover plate protrudes from the outer peripheral surface of the mandrel body to block the first opening.

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