An assembly fixture for an evaporator fan rotor assembly

Abstract

A fixture for assembling an evaporator fan rotor assembly, belonging to the technical field of permanent magnet DC brushless evaporator fans, addresses the problem of low efficiency caused by the need for multiple sets of fixtures in the press-fitting of existing internal rotor structure motor rotors. This fixture includes a base, a floating plate, a pressure plate, and a release template. The base is equipped with a top rod, guide post one, and guide post two. The floating plate is fitted onto guide post one, with a core placement assembly on it for pre-installing the core. The pressure plate is fitted onto guide post two, with a magnet pressing head and guide post three on its bottom side. The release template is fitted onto guide post three, with mounting holes on its magnet transfer plate for pre-installing magnets. Each component is elastically buffered by springs, and the core and magnet mounting positions are precisely aligned using a positioning structure. This fixture integrates the core and magnet press-fitting process, reducing the number of fixtures, improving assembly accuracy and production efficiency, and lowering production costs. It is suitable for the efficient assembly of internal rotor structure brushless motor rotors.

Description

Technical Field

[0001] This utility model relates to the field of permanent magnet DC brushless evaporator fans, and in particular to a tooling for assembling evaporator fan rotor components. Background Technology

[0002] With the development of global industrialization, permanent magnet brushless DC motors have been widely used in various fields of economic development. Currently, the number of companies producing permanent magnet brushless DC motors is increasing. To produce permanent magnet brushless DC motors with better cost performance, manufacturers are actively and continuously optimizing their production processes. Currently, brushless DC motors are mainly divided into internal rotor structures and external rotor structures. The rotor of an internal rotor brushless motor mainly consists of a shaft, iron core, and magnets, while the rotor of an external rotor brushless motor mainly consists of an iron core and enameled wire. These two designs are suitable for different technical fields.

[0003] For brushless motors with internal rotor structure, the press-fitting structure of the rotor varies slightly depending on the product. Generally, the press-fitting steps are a series of steps such as pressing the shaft into the iron core and pressing the rotor assembly into the magnet. This requires several sets of tooling and suitable personnel to assemble the rotor, which is costly and inefficient.

[0004] Therefore, in view of the shortcomings of the existing technology, it is necessary to design an assembly tooling for the evaporator fan rotor assembly to solve the above problems. Utility Model Content

[0005] To overcome the shortcomings of the prior art, the present invention aims to provide a tooling for assembling an evaporator fan rotor assembly.

[0006] To achieve the above and other related objectives, the technical solution provided by this utility model is: a tooling for assembling an evaporator fan rotor assembly, comprising:

[0007] The base is provided with a top rod, a guide post one, and a guide post two. The guide post one is arranged around the top rod, and the guide post two is arranged around the guide post one.

[0008] A floating plate is slidably mounted on the first guide post. A spring is mounted on the first guide post. One end of the spring abuts against the base and the other end abuts against the floating plate. A core placement seat assembly is provided on the floating plate. The core placement seat assembly is correspondingly arranged with the top rod and is used for pre-installing the core.

[0009] A pressure plate is slidably mounted on the second guide post. A second spring is mounted on the second guide post. One end of the second spring abuts against the base, and the other end abuts against the pressure plate. A magnetic steel pressure head and a guide sleeve are provided on the bottom side of the pressure plate. The guide sleeve is arranged around the magnetic steel pressure head. A third guide post that can slide up and down is provided in the guide sleeve.

[0010] A demolding template is fixed to the bottom end of the guide post three. A spring three is sleeved on the guide post three. One end of the spring three abuts against the pressure plate, and the other end abuts against the demolding template. The demolding template is provided with a magnet turnover plate that can be inserted from the side. The magnet turnover plate is provided with mounting holes for pre-installed magnets. The demolding template is provided with demolding holes for magnets to pass through. The magnet pressure head, the mounting holes, and the demolding holes are all corresponding to the magnet mounting positions of the iron core installed on the iron core placement seat assembly.

[0011] The preferred technical solution is as follows: the iron core placement base assembly includes an iron core placement base and an iron core central support guide column. The iron core central support guide column is configured as a cylindrical structure and fixed on the floating plate. The iron core placement base is configured as a cylindrical structure and is located on the outer periphery of the iron core central support guide column. The inner ring of the iron core placement base is provided with multiple sets of triangular support ribs arranged axially. The multiple sets of triangular support ribs are configured to support the iron core.

[0012] The preferred technical solution is that the floating plate is provided with a through hole arranged coaxially with the guide column of the iron core center support, and the through hole is matched with the top rod.

[0013] The preferred technical solution is that the top of the triangular support edge is provided with a positioning pin, and the positioning pin is matched with the positioning hole on the iron core.

[0014] The preferred technical solution is that the peripheral walls of the iron core placement base and the iron core central support guide column are provided with corresponding notches, and the notches are configured to allow the rotating shaft to pass through.

[0015] A preferred technical solution is that an elastic positioning bead is embedded in the inner wall of the mounting hole to fix the magnet pre-installed in the mounting hole.

[0016] A preferred technical solution is that the magnetic steel turnover plate is provided with a handle on its side.

[0017] The preferred technical solution is that a buffer column is fixed on the base, and the buffer column is correspondingly arranged with the floating plate.

[0018] The preferred technical solution is that a limiting post is fixed on the base, and the limiting post is correspondingly arranged with the pressure plate.

[0019] Due to the application of the above technical solution, the beneficial effects of this utility model are as follows:

[0020] Integrated design improves efficiency: Through the multi-level structural design of base, floating plate, pressure plate and release plate, the pre-assembly and pressing process of iron core and magnet is integrated into the same tooling, reducing the number of tooling switching steps and reducing labor and time costs.

[0021] Precise positioning and guidance: The triangular support ridges, positioning pins, and coaxially arranged top rods and through holes of the iron core placement seat assembly ensure the center positioning of the iron core during installation; the elastic positioning beads of the magnet turnover plate cooperate with the demolding holes to achieve precise alignment of the magnets and improve the assembly accuracy of the rotor assembly.

[0022] Elastic buffering and easy demolding: Spring 1, Spring 2 and Spring 3 sleeved on the guide post provide a buffering effect to avoid rigid collisions during pressing; the matching design of the demolding plate and the magnetic steel pressure head facilitates the demolding operation after the magnetic steel is pressed, improving the convenience of tooling use. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the tooling structure involved in this utility model.

[0024] Figure 2 This is a schematic diagram of the tooling involved in this utility model in the state of pre-rotating shaft, iron core and magnet.

[0025] Figure 3 This is a schematic diagram of the rotor assembly in the press-fit state after the tooling involved in this utility model is completed. Detailed Implementation

[0026] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0027] Please see Figures 1-3 It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component 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 utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Example:

[0030] like Figures 1 to 3 As shown, according to a general technical concept of this utility model, an assembly fixture for an evaporator fan rotor assembly is provided, comprising:

[0031] Base 1, with a top rod 2, a guide post 3 and a guide post 4 on the base 1, the guide post 3 surrounding the top rod 2 and the guide post 4 surrounding the guide post 3;

[0032] Floating plate 5 is slidably mounted on guide post 3. Spring 6 is mounted on guide post 3. One end of spring 6 abuts against base 1 and the other end abuts against floating plate 5. Iron core placement seat assembly 7 is provided on floating plate 5. Iron core placement seat assembly 7 is correspondingly set with top rod 2 and is used for pre-installing iron core.

[0033] Pressure plate 8 is slidably mounted on guide post 2 4. Spring 2 9 is mounted on guide post 2 4. One end of spring 2 9 abuts against base 1 and the other end abuts against pressure plate 8. Magnet head 10 and guide sleeve 11 are provided on the bottom side of pressure plate 8. Guide sleeve 11 is arranged around magnet head 10. Guide post 3 12 is provided in guide sleeve 11 that can slide up and down.

[0034] The template 13 is fixed to the bottom end of the guide post 12. The guide post 12 is fitted with a spring 14. One end of the spring 14 abuts against the pressure plate 8 and the other end abuts against the template 13. The template 13 is provided with a magnet turnover plate 15 that can be inserted from the side. The magnet turnover plate 15 is provided with a mounting hole 151 for pre-installed magnets. The template 13 is provided with a demolding hole for the magnets to pass through. The magnet pressure head 10, the mounting hole 151, and the demolding hole are all set to correspond to the magnet installation position of the iron core installed on the iron core placement seat assembly 7.

[0035] like Figures 1 to 3As shown, in an exemplary embodiment of this utility model, the core placement assembly 7 includes a core placement base 71 and a core center support guide column 72. The core center support guide column 72 is configured as a cylindrical structure and fixed on the floating plate 5. The core placement base 71 is configured as a cylindrical structure and is located on the outer periphery of the core center support guide column 72. The inner ring of the core placement base 71 is provided with multiple sets of axially arranged triangular support ribs 711, which are configured to support the core.

[0036] like Figures 1 to 3 As shown, in an exemplary embodiment of this utility model, the floating plate 5 is provided with a through hole arranged coaxially with the iron core center support guide column 72, and the through hole is matched with the top rod 2.

[0037] like Figures 1 to 3 As shown, in an exemplary embodiment of this utility model, the top of the triangular support rib 711 is provided with a positioning pin, which is matched with the positioning hole on the iron core.

[0038] like Figures 1 to 3 As shown, in an exemplary embodiment of this utility model, the peripheral walls of the core placement base 71 and the core center support guide column 72 are provided with corresponding notches, which are configured to allow the rotating shaft to pass through.

[0039] like Figures 1 to 3 As shown, in an exemplary embodiment of this utility model, an elastic positioning bead is embedded in the inner wall of the mounting hole 151 for fixing the magnet pre-installed in the mounting hole 151.

[0040] like Figures 1 to 3 As shown, in an exemplary embodiment of this utility model, the magnetic steel turnover plate 15 is provided with a handle on its side.

[0041] like Figures 1 to 3 As shown, in an exemplary embodiment of this utility model, a buffer column 16 is fixed on the base 1, and the buffer column 16 is correspondingly arranged with the floating plate 5.

[0042] like Figures 1 to 3 As shown, in an exemplary embodiment of this utility model, a limiting post 17 is fixed on the base 1, and the limiting post 17 is correspondingly arranged with the pressure plate 8.

[0043] Start → Fix the tooling onto the press and secure it → Insert the iron core through the top of the shaft onto the shaft → Insert the fixing clip into the slot on the iron core → Align the positioning hole on the iron core with the positioning pin, and place the rotor assembly onto the iron core placement seat assembly 7 → Place the magnet into the corresponding mounting hole 151 of the magnet turnover plate 15 → Insert the magnet turnover plate 15 into the template 13 → Start the press → The pressure plate 8 moves down along the guide post 4 → The template 13 first contacts the end face of the iron core on the iron core placement base 7 → The equipment continuously applies downward pressure through the tooling pressure plate 8 → When spring 314 deforms under stress, and this force is less than the upward counterforce of spring 16, the ejector plate 13 continues to move downward along the guide post. When spring 314 deforms under stress, and this force is greater than the upward counterforce of spring 16, the ejector plate 13 and the floating plate 5 move downward simultaneously. The lower end of the rotating shaft first contacts the top of the push rod on the lower base 1, and the rotating shaft remains stationary. The magnetic steel pressure head 10 on the bottom side of the pressure plate 8 contacts the magnet in the magnetic steel turnover plate 15, and the magnet moves vertically downward along the magnetic steel pressure head 10. The equipment continuously applies downward pressure through the tooling pressure plate 8. When the magnet contacts the end face of the iron core, the rotating shaft remains stationary, and the iron core, magnet, and fixing clip move downward together along the rotating shaft. The equipment continuously applies downward pressure through the pressure plate 8. The magnet and the fixing clip are pressed into the iron core → The equipment continuously applies downward pressure through the pressure plate 8 → The lower end face of the pressure plate 8 contacts the limiting post 17, and the pressure plate 8 stops moving downward → The downward pressure applied to the tooling pressure plate 8 is stopped → The tooling is driven to reset by the rebound force of the spring 2 9, which drives the pressure plate 8 and the release template 13 → The rotor assembly that has been pressed is taken out.

[0044] Therefore, this utility model has the following advantages:

[0045] Integrated design improves efficiency: Through the multi-level structural design of base, floating plate, pressure plate and release plate, the pre-assembly and pressing process of iron core and magnet is integrated into the same tooling, reducing the number of tooling switching steps and reducing labor and time costs.

[0046] Precise positioning and guidance: The triangular support ridges, positioning pins, and coaxially arranged top rods and through holes of the iron core placement seat assembly ensure the center positioning of the iron core during installation; the elastic positioning beads of the magnet turnover plate cooperate with the demolding holes to achieve precise alignment of the magnets and improve the assembly accuracy of the rotor assembly.

[0047] Elastic buffering and easy demolding: Spring 1, Spring 2 and Spring 3 sleeved on the guide post provide a buffering effect to avoid rigid collisions during pressing; the matching design of the demolding plate and the magnetic steel pressure head facilitates the demolding operation after the magnetic steel is pressed, improving the convenience of tooling use.

[0048] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An evaporative blower rotor assembly assembly fixture, comprising: include: The base is provided with a top rod, a guide post one, and a guide post two. The guide post one is arranged around the top rod, and the guide post two is arranged around the guide post one. A floating plate is slidably mounted on the first guide post. A spring is mounted on the first guide post. One end of the spring abuts against the base and the other end abuts against the floating plate. A core placement seat assembly is provided on the floating plate. The core placement seat assembly is correspondingly arranged with the top rod and is used for pre-installing the core. A pressure plate is slidably mounted on the second guide post. A second spring is mounted on the second guide post. One end of the second spring abuts against the base, and the other end abuts against the pressure plate. A magnetic steel pressure head and a guide sleeve are provided on the bottom side of the pressure plate. The guide sleeve is arranged around the magnetic steel pressure head. A third guide post that can slide up and down is provided in the guide sleeve. A demolding template is fixed to the bottom end of the guide post three. A spring three is sleeved on the guide post three. One end of the spring three abuts against the pressure plate, and the other end abuts against the demolding template. The demolding template is provided with a magnet turnover plate that can be inserted from the side. The magnet turnover plate is provided with mounting holes for pre-installed magnets. The demolding template is provided with demolding holes for magnets to pass through. The magnet pressure head, the mounting holes, and the demolding holes are all corresponding to the magnet mounting positions of the iron core installed on the iron core placement seat assembly.

2. An evaporative air mover rotor assembly assembly tool according to claim 1, wherein: The core placement assembly includes a core placement base and a core center support guide column. The core center support guide column is configured as a cylindrical structure and fixed on the floating plate. The core placement base is configured as a cylindrical structure and is located on the outer periphery of the core center support guide column. The inner ring of the core placement base is provided with multiple sets of axially arranged triangular support ribs, which are configured to support the core.

3. An evaporative air mover rotor assembly assembly tool according to claim 2, wherein: The floating plate is provided with a through hole arranged coaxially with the central support guide column of the iron core, and the through hole is matched with the top rod.

4. An evaporative air mover rotor assembly assembly tooling fixture according to claim 2, wherein: The top of the triangular support ridge is provided with a positioning pin, which is matched with the positioning hole on the iron core.

5. An evaporative air mover rotor assembly assembly tool according to claim 2, wherein: The iron core placement base and the iron core central support guide column have corresponding notches on their peripheral walls, and the notches are configured to allow the rotating shaft to pass through.

6. An evaporative air mover rotor assembly assembly tooling fixture according to claim 1, wherein: The inner wall of the mounting hole is embedded with an elastic positioning bead for fixing the magnet pre-installed in the mounting hole.

7. An evaporative air mover rotor assembly assembly tooling fixture according to claim 1, wherein: The magnetic steel turnover board has a handle on its side.

8. An evaporative air mover rotor assembly assembly tooling fixture according to claim 1, wherein: A buffer column is fixed on the base, and the buffer column is correspondingly arranged with the floating plate.

9. An evaporative air mover rotor assembly assembly tooling fixture according to claim 1, wherein: A limiting post is fixed on the base, and the limiting post is correspondingly arranged with the pressure plate.

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