Stator press-fitting equipment

Abstract

This invention discloses a stator pressing device, comprising: a base; a first mounting base mounted on the base and having an assembly space, the first mounting base being provided with multiple gripping components and pressing components; and a second mounting base movably mounted on the base, the second mounting base having multiple first mounting positions and second mounting positions, wherein the multiple first mounting positions are respectively used to mount stators, so as to transfer multiple stators to the assembly space via the second mounting base, the gripping components being used to grip the stators on the second mounting base; and the second mounting positions are used to mount housings, so as to transfer the housings to the assembly space via the second mounting base, the pressing components being used to press the stators gripped by the gripping components into the housings. According to the stator pressing device of this invention, multiple stators can be pressed simultaneously using a single set of equipment, reducing the number of pressing devices required, greatly saving the cost of pressing stators, and improving economic efficiency.

Description

Technical Field

[0001] This invention relates to the field of stator tooling technology, and more specifically, to a stator pressing device. Background Technology

[0002] The motor stator is a key unit of the motor system. In related technologies, with the popularization of oil cooling and the demand for lubrication and cooling oil channels, the stator assembly and the motor housing adopt an interference fit, which requires a large pressing force. This makes it difficult to fix with bolts to a large extent. Pressing equipment is needed to press the stator into the housing, but the pressing efficiency of the stator is low and the cost is high. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide a stator pressing device that can perform pressing operations on multiple stators simultaneously, with high pressing efficiency and reduced number of pressing devices required, thereby reducing pressing costs and improving the economic benefits of pressing.

[0004] A stator pressing device according to an embodiment of the present invention includes: a base; a first mounting base, the first mounting base being mounted on the base and having an assembly space, the first mounting base being provided with a plurality of gripping components and pressing components; a second mounting base, the second mounting base being movably mounted on the base, the second mounting base having a plurality of first mounting positions and second mounting positions, wherein the plurality of first mounting positions are respectively used to mount the stator, so as to transfer the plurality of stators to the assembly space via the second mounting base, the gripping components being used to grip the stator on the second mounting base; the second mounting positions are used to mount a housing, so as to transfer the housing to the assembly space via the second mounting base, the pressing components being used to press the stator gripped by the gripping components into the housing.

[0005] According to the stator pressing equipment of the present invention, multiple stators can be pressed simultaneously with one set of stator pressing equipment, which reduces the number of pressing equipment required, shortens the pressing time, greatly saves the cost of pressing stators, improves economic efficiency, and helps to improve the assembly consistency of multiple stators and the housing.

[0006] In addition, the stator press-fitting equipment according to the above embodiments of the present invention may also have the following additional technical features:

[0007] According to some embodiments of the present invention, the second mounting base includes: a support member mounted on the base and defining a second mounting position; and a positioning fixture detachably mounted on the second mounting position, the positioning fixture defining a plurality of first mounting positions.

[0008] According to some embodiments of the present invention, the support member is provided with a first positioning part and a second positioning part, the first positioning part being used for insertion and positioning with the housing, and the second positioning part being used for insertion and positioning with the positioning fixture; and / or, the positioning fixture is provided with a circumferential positioning part, the circumferential positioning part being used for insertion and positioning with the stator.

[0009] According to some embodiments of the present invention, the positioning fixture includes a plurality of cylindrical bodies fixedly connected together, the cylindrical bodies defining the first mounting position.

[0010] According to some embodiments of the present invention, the substrate is provided with a guide rail, a first positioning detector and a second positioning detector, the second mounting base is slidably engaged with the guide rail and movable along the guide rail between a first position and a second position, the first position being located within the assembly space and the second position being located outside the assembly space, the second mounting base triggers the first positioning detector at the first position and triggers the second positioning detector at the second position.

[0011] According to some embodiments of the present invention, the stator pressing device further includes: a plurality of centering components, the centering components being mounted on the first mounting base and having a column that is retractable in the vertical direction, the pressing components being mounted one-to-one with the centering components and having insertion holes, the column being adapted to be inserted into the insertion holes in the extended state, and the gripping components being mounted one-to-one with the pressing components.

[0012] According to some embodiments of the present invention, the press-fit assembly includes a first connecting portion and a second connecting portion. The first connecting portion is mounted on the centering assembly and has the insertion hole. The second connecting portion is mounted on the first connecting portion via a bearing, the axis of which is parallel to the vertical direction. The gripping assembly is mounted on the second connecting portion. The stator press-fitting device further includes a circumferential positioning drive and a circumferential positioning mating component. The circumferential positioning drive is disposed on the first connecting portion or the centering assembly. The circumferential positioning mating component is disposed on the second connecting portion. The circumferential positioning drive and the circumferential positioning mating component are adapted to be inserted to lock the second connecting portion and the first connecting portion in the circumferential direction.

[0013] According to some embodiments of the present invention, the first mounting base includes: a guide post extending in a vertical direction and connected at its lower part to the base; a fixed base mounted on the upper part of the guide post and provided with a longitudinal driving member; and a movable base movably mounted on the guide post in a vertical direction and located below the fixed base, the space below the movable base being the assembly space, the pressing assembly and the gripping assembly mounted on the movable base, and the longitudinal driving member connected to the movable base and used to drive the movable base to move.

[0014] According to some embodiments of the present invention, the movable base is provided with a detachable adapter, and the pressing assembly and the gripping assembly are mounted on the adapter.

[0015] According to some embodiments of the present invention, the longitudinal drive includes an electric cylinder and a balancing cylinder.

[0016] According to some embodiments of the present invention, the stator press-fitting device further includes: a control component, the control component being mounted on the base and / or the first mounting seat, the control component being communicatively connected to the base, the gripping component and the longitudinal drive component.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figures 1-2 This is a schematic diagram of the stator press-fitting equipment and the stator according to an embodiment of the present invention;

[0020] Figure 3 This is a front view of the stator press-fitting equipment and the stator according to an embodiment of the present invention;

[0021] Figure 4 yes Figure 3 The center circle shows a magnified view of point A.

[0022] Figure 5 yes Figure 3 The center circle shows a magnified view of a portion at point B.

[0023] Figure 6 yes Figure 3 Top view;

[0024] Figure 7 yes Figure 6 The center circle shows a magnified view of point C.

[0025] Figure 8 yes Figure 6 Partial structural sectional view;

[0026] Figure 9 yes Figure 6 Partial structural diagram;

[0027] Figure 10 yes Figure 3 The right view;

[0028] Figure 11 yes Figure 10 The middle circle shows a magnified view of point D.

[0029] Figure label:

[0030] Stator press-fitting equipment 100;

[0031] 10. Base; 101. Workbench; 102. Foot; 103. Equipment frame; 104. First electrical cabinet; 105. Second electrical cabinet; 11. Guide rail; 12. First position detector; 13. Second position detector; 14. First stop; 15. Second stop; 16. Trackless cylinder; 17. Button; 18. Slider;

[0032] First mounting base 20; Assembly space 21; Gripping assembly 22; Pressing assembly 23; First connecting part 231; Insertion hole 232; Circumferential positioning drive 233; Second connecting part 234; Bearing 235; Circumferential positioning mating part 236; Positioning cylinder 237; Guide column 24; Fixed base 25; Longitudinal drive 26; Electric cylinder 261; Balance cylinder 262; Moving base 27; Adapter 271;

[0033] Second mounting base 30; First mounting position 31; Second mounting position 32; Support member 33; First positioning part 331; Second positioning part 332; Shaft clamp 333; Positioning fixture 34; Cylinder 341; Circumferential positioning part 342;

[0034] Centering component 40; Column 41;

[0035] Control component 70; Industrial computer 71; Human-machine interface 72; PLC electrical system 73; Stator 81. Detailed Implementation

[0036] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0037] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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 invention.

[0038] In the description of this invention, "first feature" and "second feature" may include one or more of the features, "multiple" means two or more, "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them, and "above," "over," and "on top" the second feature may include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0039] The stator press-fitting apparatus 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0040] Reference Figures 1-11 As shown, the stator press-fitting equipment 100 according to an embodiment of the present invention is used to assemble the stator 81 with the housing, such as through interference fit. The stator press-fitting equipment 100 may include: a base 10, a first mounting base 20, and a second mounting base 30.

[0041] Specifically, the base 10 is the main load-bearing component of the stator press-fitting equipment 100, used to install the first mounting base 20 and the second mounting base 30, etc., and to combine the various components of the stator press-fitting equipment 100 to form the stator press-fitting equipment 100.

[0042] The first mounting base 20 is mounted on the base 10 and has an assembly space 21. The first mounting base 20 is equipped with multiple gripping components 22 and pressing components 23. The gripping components 22 are used to grip the stator 81, and the pressing components 23 are used to press the stator 81 gripped by the gripping components 22 into the heated housing. The first mounting base 20 has an assembly space 21, which facilitates the gripping components 22 and pressing components 23 to grip and press the stator 81 within the assembly space 21. Multiple gripping components 22 and pressing components 23 can grip the stator 81 simultaneously, meaning the first mounting base 20 can simultaneously grip multiple stators 81, making it possible for the stator pressing equipment 100 to simultaneously press multiple stators 81.

[0043] The second mounting base 30 is movably mounted on the base 10 and has multiple first mounting positions 31 and second mounting positions 32. The multiple first mounting positions 31 are used to mount stators 81, allowing multiple stators 81 to be transferred to the assembly space 21 via the movable second mounting base 30, facilitating the gripping component 22's gripping of the stators 81 on the second mounting base 30. The second mounting positions 32 are used to mount the housing, allowing the housing to be transferred to the assembly space 21 via the movable second mounting base 30, facilitating the pressing component 23's pressing of the stators 81 gripped by the gripping component 22 into the housing. This enables a single stator pressing device 100 to perform pressing operations on multiple stators 81 at once, improving the working efficiency of the stator pressing device 100.

[0044] Compared to related technologies where a single press-fitting device can only press-fit one stator at a time, the embodiments of this application allow a single stator press-fitting device 100 to press-fit multiple stators 81 simultaneously when a large number of stators 81 need to be pressed. This reduces the number of press-fitting devices required, decreases the pressing time, and significantly reduces the cost of pressing stators 81, resulting in a higher cost-performance ratio and improved economic efficiency. For example, in the case of a dual-stator motor, both stators 81 can be installed in the housing simultaneously.

[0045] Furthermore, both the stator 81 and the housing are transported to the assembly space 21 via the second mounting base 30, and multiple stators 81 can be transported to the assembly space 21 simultaneously via the second mounting base 30. Then, the pressing assembly 23 and the gripping assembly 22 cooperate to achieve pressing, which helps to improve the angular consistency between the stator 81 and the housing, improve the assembly consistency of multiple stators 81, and thus improve the assembly effect.

[0046] It should be noted that, depending on actual needs, multiple first mounting positions 31 can be used simultaneously or individually, and the corresponding multiple gripping components 22 can be used simultaneously or individually, thereby improving the applicability of the stator pressing equipment 100.

[0047] The stator 81 can be installed in the first mounting position 31 by means of snap-fit ​​or other connection methods. This invention does not limit the method, as long as it enables the installation of the stator 81 in the first mounting position 31 and facilitates the gripping component 22 to grip the stator 81. The housing can be installed in the second mounting position 32 by one or more of the following connection methods: bolt fixing, snap-fit ​​connection, adhesive bonding, etc. This invention does not limit the method, as long as it enables the installation of the housing in the second mounting position 32 and facilitates the pressing component 23 to press it in.

[0048] According to the stator pressing equipment 100 of the present invention, multiple stators 81 can be pressed simultaneously with one set of stator pressing equipment 100, which reduces the number of pressing equipment required, shortens the pressing time, greatly saves the cost of pressing stators 81, improves economic efficiency, and helps to improve the assembly consistency of multiple stators 81 with the housing.

[0049] In some embodiments of the present invention, such as Figures 1-4As shown, the second mounting base 30 includes a support member 33 and a positioning fixture 34. The support member 33 is movably mounted on the base 10. The mounting method includes, but is not limited to, the cooperation mounting method of the slider 18 and the guide rail 11, etc. The present invention does not limit this, as long as the support member 33 can be movably mounted on the base 10. The support member 33 defines a second mounting position 32 for mounting the housing. The movement of the support member 33 on the base 10 enables the housing to move towards the assembly space 21, thereby facilitating the press-fitting of the stator 81 and the housing.

[0050] In addition, in some embodiments, the second mounting base 30 includes a shaft clamp 333 or a quick clamp, which can clamp and fix the housing to the second mounting position 32 by rotating the shaft clamp 333 or the quick clamp, making the installation of the housing more stable.

[0051] Furthermore, in some embodiments, the positioning fixture 34 is detachably mounted on the second mounting position 32, defining a plurality of first mounting positions 31. When the stator 81 needs to be installed, the positioning fixture 34 is installed on the second mounting position 32, allowing the stator 81 to be installed on the plurality of first mounting positions 31 defined by the positioning fixture 34; when the housing needs to be installed, the positioning fixture 34 is removed from the second mounting position 32, allowing the housing to be installed on the second mounting position 32. The second mounting position 32 is defined by the support member 33, and the plurality of first mounting positions 31 are located on the second mounting position 32, which helps to reduce the lateral space occupied by the support member 33 on the base 10, resulting in a more compact structure for the stator pressing equipment 100. Furthermore, the first mounting position 31 is used to install the stator 81, and the second mounting position 32 is used to install the housing. With multiple first mounting positions 31 located on the second mounting position 32, the positional consistency between the stator 81 and the housing is better, which helps to reduce the pressing deviation between the stator 81 and the housing and improve the pressing accuracy between the stator 81 and the housing.

[0052] The positioning fixture 34 can be installed on the second mounting position 32 by means of bolt connection, snap connection, adhesive bonding, etc. The present invention does not limit this, as long as the positioning fixture 34 can be detachably installed on the second mounting position 32.

[0053] In some embodiments, such as Figure 6 and Figure 9As shown, the support member 33 is provided with a first positioning part 331 and a second positioning part 332. The first positioning part 331 is used for insertion and positioning with the housing, and the second positioning part 332 is used for insertion and positioning with the positioning fixture 34. For example, the first positioning part 331 and the second positioning part 332 can be positioning pins. The first positioning part 331 can be inserted into the housing to achieve direct installation positioning of the housing, and the second positioning part 332 can be inserted into the positioning fixture 34 to achieve installation positioning of the positioning fixture 34, thereby achieving indirect installation positioning of the stator 81 on the positioning fixture 34. The housing and the positioning fixture 34 are less likely to be misaligned or deflected on the support member 33, which helps to further reduce the pressing deviation between the stator 81 and the housing and improve the pressing accuracy between the stator 81 and the housing.

[0054] It should be noted that the first positioning part 331 and the second positioning part 332 can be different positioning parts or the same positioning part, which are all within the protection scope of the present invention.

[0055] In some embodiments, such as Figures 6-7 As shown, the positioning fixture 34 is provided with a circumferential positioning part 342, which is used for insertion and positioning with the stator 81. For example, the circumferential positioning part 342 can be a keyway, and a key is installed in the groove on the outer circumferential surface of the stator 81. Through the installation and cooperation of the key and the keyway, the stator 81 is positioned on the positioning fixture 34, reducing the installation deviation of the stator 81, enhancing the installation reliability of the stator 81, and further improving the pressing accuracy of the stator 81 and the housing. The groove of the stator 81 can be a structure for separately machining the key, or it can be a cooling oil groove of the stator 81 for oil passage to achieve lubrication and cooling functions.

[0056] In some embodiments, such as Figures 1-3 As shown, the positioning fixture 34 includes multiple cylindrical bodies 341 fixedly connected. Each cylindrical body 341 defines a first mounting position 31, that is, the space enclosed by the cylindrical body 341 serves as the first mounting position 31. One stator 81 is mounted at one first mounting position 31. Therefore, multiple cylindrical bodies 341 can mount multiple stators 81, and the cylindrical bodies 341 can adapt to the shape of the stator 81. For example, when the stator 81 is cylindrical, the cylindrical body 341 can be a cylinder, which facilitates the installation, gripping, and angle control of the stator 81.

[0057] In some embodiments of the present invention, such as Figures 1-3As shown, the base 10 is provided with a guide rail 11, a first positioning detector 12, and a second positioning detector 13. The second mounting base 30 is slidably engaged with the guide rail 11 and is movable along the guide rail 11 between a first position and a second position. The first position is located within the assembly space 21, and the second position is located outside the assembly space 21. The second mounting base 30 triggers the first positioning detector 12 in the first position and triggers the second positioning detector 13 in the second position. This helps to limit the travel of the second mounting base 30 on the guide rail 11, facilitating the gripping operation of the gripping component 22 on the stator 81 and the pressing operation of the pressing component 23 on the stator 81 into the housing when the second mounting base 30 is in the first position, and enabling the disassembly and assembly of the stator 81 and the housing when the second mounting base 30 is in the second position. The first positioning detector 12 and the second positioning detector 13 can be position sensors such as magnetic switches.

[0058] Furthermore, in some embodiments, such as Figures 1-3 As shown, the base 10 also includes a first stop 14, a second stop 15, and a trackless cylinder 16. The trackless cylinder 16 provides driving force for the sliding of the second mounting seat 30 on the guide rail 11, thereby enabling the second mounting seat 30 to move on the base 10. When the first positioning detector 12 and the second positioning detector 13 are triggered, the trackless cylinder 16 stops operating, thereby limiting the stroke of the second mounting seat 30 on the guide rail 11. The first stop 14 blocks the second mounting seat 30 when it moves to the first position, causing the second mounting seat 30 to stop upon reaching the first position. The second stop 15 blocks the second mounting seat 30 when it moves to the second position, causing the second mounting seat 30 to stop upon reaching the second position, thereby limiting the position of the second mounting seat 30 on the guide rail 11.

[0059] In some embodiments of the present invention, such as Figure 3 and Figure 8 As shown, the stator pressing equipment 100 also includes a plurality of centering components 40, which are used to adjust the pressing angle of the stator 81 gripped by the gripping component 22.

[0060] Specifically, the centering component 40 is installed on the first mounting base 20 and has a column 41 that is retractable in the vertical direction. The pressing component 23 is installed on the centering component 40 and has a socket 232. The column 41 can be inserted into the socket 232 when it is extended. The gripping component 22 is installed on the pressing component 23.

[0061] When the column 41 extends and inserts into the socket 232, it reduces the offset of the pressing assembly 23 and the gripping assembly 22 relative to the vertical direction, improves the perpendicularity of the pressing assembly 23 and the gripping assembly 22, and facilitates the subsequent vertical pressing of the stator 81 into the housing by the pressing assembly 23 and the gripping assembly 22, thereby improving the accuracy of pressing the stator 81. When the column 41 retracts and leaves the socket 232, the pressing of the stator 81 by the pressing assembly 23 and the gripping assembly 22 can float automatically with the change of the pressing force on the stator 81, which is beneficial to meet the floating chamfering requirements of the stator 81.

[0062] Furthermore, in some embodiments where the centering assembly 40 includes a centering cylinder, the centering cylinder is capable of driving the column 41 to achieve telescopic movement.

[0063] The column 41 can be a cylinder, prism, or a column with a cone or pyramid shape. In some embodiments where the column 41 is a column with a cone shape, the insertion hole 232 of the press-fit assembly 23 can be a conical hole to accommodate the column 41 in its extended state, thereby improving the matching degree of the insertion fit between the column 41 and the insertion hole 232 and increasing the contact area between the column 41 and the insertion hole 232. This allows the press-fit assembly 23 and the gripping assembly 22 to withstand greater pressure applied by the centering assembly 40, making the locking and positioning of the stator 81 more reliable and the insertion of the column 41 into the insertion hole 232 more accurate.

[0064] In some embodiments, the gripping component 22 is mounted on the pressing component 23, the pressing component 23 is mounted on the centering component 40, and the centering component 40 is mounted on the first mounting base 20. The gripping component 22 and the pressing component 23 can be installed using bolted connections, snap-fit ​​connections, adhesive bonding, or welding, etc. The pressing component 23 and the centering component 40 can be installed using bolted connections, snap-fit ​​connections, adhesive bonding, or welding, etc. The centering component 40 and the first mounting base 20 can be installed using bolted connections, snap-fit ​​connections, adhesive bonding, or welding, etc. This invention does not limit the specific methods used; any method that enables the gripping component 22 to be installed on the pressing component 23, the pressing component 23 to be installed on the centering component 40, and the centering component 40 to be installed on the first mounting base 20 is acceptable.

[0065] In some embodiments, such as Figure 3 , Figure 5 , Figure 8 and Figures 10-11As shown, the press assembly 23 includes a first connecting part 231 and a second connecting part 234. The first connecting part 231 is installed on the centering assembly 40 and has an insertion hole 232. The second connecting part 234 is installed on the first connecting part 231 through a bearing 235. The axis of the bearing 235 is parallel to the vertical direction. The gripping assembly 22 is installed on the second connecting part 234. When the column 41 extends and inserts into the socket 232, the centering assembly 40, through the cooperation between the column 41 and the socket 232, pushes the first connecting part 231 to slide radially or swing, achieving a limit position perpendicular to the axis. Then, the second connecting part 234, through the bearing 235 connected to the first connecting part 231, achieves circumferential rotation relative to the centering assembly 40. That is, the gripping assembly 22 can move circumferentially and radially relative to the centering assembly 40 along with the first connecting part 231 and the second connecting part 234 of the pressing assembly 23, thereby straightening the stator 81 and placing it in a suitable pressing position, facilitating the pressing of the stator 81 to the housing. The bearing 235 can be a ball bearing, etc.

[0066] In some specific embodiments, the stator press-fitting equipment 100 includes a circumferential positioning drive component 233 and a circumferential positioning mating component 236, such as... Figure 5 and Figure 11 As shown, the circumferential positioning drive 233 is located at the first connecting part 231 or the centering assembly 40, and the circumferential positioning mating part 236 is located at the second connecting part 234. The circumferential positioning drive 233 can be a V-shaped block with a positioning cylinder 237, and the circumferential positioning mating part 236 can be a block with a V-groove. The positioning cylinder 237 can drive the circumferential positioning drive 233 to achieve telescopic movement. When the circumferential positioning drive 233 extends, it can insert into the axial positioning mating part 236 to achieve insertion locking, thereby locking the second connecting part 234 and the first connecting part 231 circumferentially. This keeps the stator 81 in a suitable position for press-fitting, further improving the press-fitting accuracy between the stator 81 and the housing, enabling a higher degree of matching between the stator 81 and the housing, reducing the possibility of separation after press-fitting, and improving the reliability of the press-fitting between the stator 81 and the housing.

[0067] The process of inserting the circumferential positioning drive 233 into the circumferential positioning mating part 236 is similar to the process of inserting the column 41 into the socket 232. The cooperation between the circumferential positioning drive 233 and the circumferential positioning mating part 236 makes the centering constraint of the stator 81 more stable.

[0068] In some embodiments of the present invention, such as Figures 1-3 and Figure 10As shown, the first mounting base 20 includes a guide post 24, a fixed base 25, and a movable base 27. Specifically, the guide post 24 extends in the vertical direction and its lower part is connected to the base 10. The connection method between the lower part of the guide post 24 and the base 10 can be bolted, snap-fitted, bonded, or welded, etc. The present invention does not limit this, as long as the connection between the lower part of the guide post 24 and the base 10 can be achieved.

[0069] The fixing seat 25 is installed on the upper part of the guide column 24. The connection between the fixing seat 25 and the upper part of the guide column 24 can be by bolt fixing, snap-fit ​​connection, bonding or welding, etc. The present invention does not limit this, as long as the connection between the fixing seat 25 and the upper part of the guide column 24 can be achieved. The fixing seat 25 is provided with a longitudinal drive member 26. The connection between the fixing seat 25 and the longitudinal drive member 26 can be by bolt fixing, snap-fit ​​connection, bonding or welding, etc. The present invention does not limit this, as long as the longitudinal drive member 26 can be installed on the fixing seat 25. For example, when the longitudinal drive member 26 is fixed to the fixing seat 25 by bolts, the installation of the longitudinal drive member 26 and the fixing seat 25 is relatively stable. When the stator pressing equipment 100 is working, the longitudinal drive member 26 is less likely to shake or even fall off, and the working stability of the stator pressing equipment 100 is high.

[0070] Meanwhile, the movable seat 27 is movably mounted on the guide post 24 in the vertical direction and located below the fixed seat 25. The connection between the movable seat 27 and the guide post 24 can be a bushing connection or the like; this invention is not limited to this, as long as the movable seat 27 can be movably mounted on the guide post 24 and located below the fixed seat 25. With the movable seat 27 located below the fixed seat 25, it can move along the guide post 24 below the fixed seat 25, reducing external interference from above the fixed seat 25 and enhancing the stability of the movable seat 27's movement.

[0071] The space below the movable base 27 is the assembly space 21. The pressing assembly 23 and the gripping assembly 22 are mounted on the movable base 27. The longitudinal drive component 26 is connected to the movable base 27 and is used to drive the movable base 27 to move. When the longitudinal drive component 26 drives the movable base 27 to move up and down, the pressing assembly 23 and the gripping assembly 22 can move up and down with the movable base 27 within the assembly space 21, thereby facilitating the gripping of the stator 81 within the assembly space 21, the pressing of the stator 81 to the housing within the assembly space 21, and the position recovery after the pressing work, completing one pressing work after another. The gripping process and the pressing process are both driven by the same longitudinal drive component 26. The gripping and pressing of multiple stators 81 are also driven by the same longitudinal drive component 26, which helps to reduce the number of drive components required for the stator pressing equipment 100 and greatly reduces production costs.

[0072] The guide post 24 can be one or more. For example, in some embodiments where there are four guide posts 24, the lower parts of the four guide posts 24 are respectively connected to the base 10, the fixed seat 25 is installed on the upper part of the four guide posts 24, and the movable seat 27 is installed on the four guide posts 24 and located below the fixed seat 25. In this way, the installation of the guide posts 24 on the base 10, the fixed seat 25 on the guide posts 24, and the movable seat 27 on the guide posts 24 is more stable and the working reliability is higher.

[0073] In some embodiments, such as Figures 1-3 and Figure 10 As shown, the movable base 27 is equipped with a detachable adapter 271, and the pressing assembly 23 and the gripping assembly 22 are mounted on the adapter 271. By replacing the adapter 271 and the components of different sizes mounted on the adapter 271, it can adapt to stators 81 of different sizes, so as to realize the pressing of more types of stators 81. Moreover, the overall replacement of the adapter 271 and the components mounted on the adapter 271 is relatively convenient, making the stator pressing equipment 100 more adaptable to different types of stators 81, and can overcome the compatibility problem of multiple varieties and structures of stator 81 products to a large extent.

[0074] In some embodiments, such as Figures 1-3 and Figure 10 As shown, the longitudinal drive component 26 includes an electric cylinder 261 and a balancing cylinder 262. The electric cylinder 261 exerts a stronger downward driving force, while the balancing cylinder 262 exerts a stronger upward driving force. Therefore, the electric cylinder 261 applies the main downward driving force to the moving seat 27, and the balancing cylinder 262 applies the main upward driving force to the moving seat 27. Furthermore, when the moving seat 27 is balanced, the balancing cylinder 262 adjusts the balance of the moving seat 27, enhancing the stability of the moving seat 27 in its balanced state. The electric cylinder 261 can largely overcome the interference fit force during the press-fitting process of the stator 81, achieving interference fitting of the stator 81.

[0075] In some embodiments, the stator press-fitting apparatus 100 further includes a control component 70, which is mounted on the base 10 or the first mounting base 20 and is communicatively connected to the base 10, the gripping component 22, and the longitudinal drive component 26. For example Figure 1 , Figure 3 and Figure 9 As shown, the control component 70 is installed on the base 10. When the control component 70 needs to be repaired or replaced, it can be removed from the base 10 or the first mounting base 20, instead of removing the control component 70 from the base 10 and the first mounting base 20 respectively. The operation is more convenient and quick, and the practicality is higher.

[0076] In other embodiments, the control component 70 is mounted on the base 10 and the first mounting base 20. The control component 70 can conveniently control the movement of the second mounting base 30 on the base 10, the gripping of the gripping component 22, and the driving of the longitudinal drive component 26, so as to control the relative position and pressing force of the stator 81 and the housing during pressing, thereby improving the controllability of pressing.

[0077] The stator pressing device 100 according to a specific embodiment of the present invention is described in detail below with reference to the accompanying drawings. It should be understood that the following description is merely illustrative and should not be construed as limiting the invention.

[0078] like Figures 1-11 As shown, a stator pressing device 100 according to a specific embodiment of the present invention is used for pressing a stator 81 to a housing. The stator pressing device 100 includes a base 10, a first mounting base 20, a second mounting base 30, two centering components 40 and a control component 70.

[0079] The base 10 is provided with two guide rails 11, a first positioning detector 12, a second positioning detector 13, a first stop 14, a second stop 15, a trackless cylinder 16, a button 17, and a slider 18. The base 10 includes a workbench 101, feet 102, and an equipment profile frame 103. The workbench 101 is provided with a first electrical cabinet 104, and a second electrical cabinet 105 is hung on the equipment profile frame 103. The first mounting base 20 has an assembly space 21. The first mounting base 20 is provided with two gripping components 22 and two pressing components 23. The gripping components 22 include grippers and gripping cylinders. The press-fit assembly 23 includes a first connecting part 231 and a second connecting part 234. The first connecting part 231 is provided with an insertion hole 232 and a circumferential positioning drive 233, which includes a positioning cylinder 237 and a V-shaped block. The second connecting part 234 is mounted to the first connecting part 231 via a bearing 235 and is provided with a circumferential positioning mating part 236, which is a block with a V-shaped groove. The bearing 235 is a ball bearing. The first mounting base 20 includes four guide posts 24, a fixed base 25, and a movable base 27. The fixed base 25 is provided with a longitudinal drive 26, which includes an electric cylinder 261 and two balancing cylinders 262. The movable base 27 is provided with an adapter 271.

[0080] The second mounting base 30 has two first mounting positions 31 and second mounting positions 32. The first mounting positions 31 are used to mount the stator 81, and the second mounting positions 32 are used to mount the housing. The second mounting base 30 includes a support member 33 and a positioning fixture 34. The support member 33 defines the second mounting position 32 and has a first positioning part 331 and a second positioning part 332. The first positioning part 331 and the second positioning part 332 are positioning pins. The support member 33 has a shaft clamp 333, which is fixed to the support member 33 by bolts. The positioning fixture 34 has a circumferential positioning part 342, which is a keyway. The stator 81 has a groove and a key on the groove. The stator 81 can be positioned and installed on the positioning fixture 34 by the key of the stator 81 and the circumferential positioning part 342. The positioning fixture 34 includes two cylindrical bodies 341, which respectively define the first mounting positions 31. The centering assembly 40 has a column 41, which is a columnar body with a cone, and the centering assembly 40 includes a centering cylinder.

[0081] The control component 70 includes an industrial personal computer (IPC) 71, a human machine interface (HMI) 72, and a PLC electrical system 73, where the PLC electrical system 73 is a programmable logic controller (PLC) electrical system. Specifically, the IPC 71 can display the operation of the electric cylinder 261 software, making the operation of the electric cylinder 261 more convenient. The IPC 71 can also store data, making the query and traceability of part quality data faster. The HMI 72 can operate cylinders, such as the trackless cylinder 16, the balancing cylinder 262, the centering cylinder, the positioning cylinder 237, and the gripping cylinder. The HMI 72 can also issue alarm signals, making the operation of the stator pressing equipment 100 safer and more reliable. The PLC electrical system 73 is programmable and can control the logic of cylinder actions, ensuring stroke safety and achieving closed-loop operation. It can realize automatic cycling and action, and can also control the actions of moving parts such as cylinders through the HMI 72.

[0082] The guide rail 11 is mounted on the worktable 101 of the base 10, and the feet 102 support the worktable 101. The guide rail 11 and the trackless cylinder 16 extend in the left-right direction on the base 10, with the first position at the right end of the base 10 and the second position at the left end of the base 10. The first positioning detector 12 and the second positioning detector 13 are magnetic switches, used to detect whether the trackless cylinder 16 controls the second mounting base 30 to reach the first position and whether the trackless cylinder 16 controls the second mounting base 30 to reach the second position, respectively. The bottoms of the four guide posts 24 are fixed to the worktable 101 by threads.

[0083] The fixed base 25 is fixed to the four guide posts 24 by nuts, and the longitudinal drive component 26 is fixed to the fixed base 25 by bolts. The movable base 27 is fixed to the extension rod of the electric cylinder 261 and the balance cylinder 262 by bolts. At the same time, the movable base 27 is inlaid with four copper sleeves, and the four copper sleeves are respectively fitted on the four guide posts 24. The movable base 27 and the guide posts 24 can slide relative to each other through the up and down extension and retraction of the electric cylinder 261 and the balance cylinder 262.

[0084] An adapter 271 is detachably mounted on the movable base 27 via bolts. The centering assembly 40, pressing assembly 23, and gripping assembly 22 are fixed to the adapter 271. By replacing the adapter 271 and the centering assembly 40, pressing assembly 23, and gripping assembly 22 on the adapter 271, different sizes of the centering assembly 40, pressing assembly 23, and gripping assembly 22 can be replaced, enabling rapid model changeover to adapt to different models of stators 81. This meets the compatibility requirements of multi-variety, small-batch trial production and allows for the pressing of stators 81 of multiple models.

[0085] The control component 70 is installed on the base 10, and the industrial computer 71 and human-machine interface 72 are fixed on the second electrical cabinet 105. The operator can rotate the second electrical cabinet 105 as needed, making operation convenient. The PLC electrical system 73 is fixed in the first electrical cabinet 104 of the base 10, and contains electrical components such as PLC, circuit breaker, and triplet.

[0086] When pressing the stator 81 using the stator pressing equipment 100, the positioning fixture 34 is first positioned by the second positioning part 332, and then the positioning fixture 34 is installed in the second mounting position 32 by bolts. Then, the two stators 81 are respectively connected by keyways and placed in the two first mounting positions 31 defined by the two cylinders 341 of the positioning fixture 34, thereby achieving angular limiting of the stator 81 installation.

[0087] After the stator 81 is installed, the trackless cylinder 16 is operated through the human-machine interface 72 to move the second mounting seat 30 from the second position into the assembly space 21 to the first position through the cooperation of the guide rail 11 and the slider 18. When the second mounting seat 30 moves to the first position, the first positioning detector 12 is triggered, causing the trackless cylinder 16 to stop working. At the same time, the second mounting seat 30 is blocked by the first stop block 14 in the moving direction and stops moving. At this time, the stator 81 on the second mounting seat 30 is located directly below the gripping component 22.

[0088] After the second mounting base 30 moves to the first position and is in place, press button 17 on the base 10 to drive the electric cylinder 261 downwards, controlled by the PLC electrical system 73, so that the moving base 27, adapter 271, centering assembly 40, pressing assembly 23, and gripping assembly 22 move downwards. When the pressing assembly 23 contacts the upper end face of the stator 81, the gripper of the gripping assembly 22 tightens the stator 81 to the left and right by the gripping cylinder. Then, press button 17 again to drive the balancing cylinder 262 upwards, controlled by the PLC electrical system 73, so that the moving base 27, adapter 271, centering assembly 40, pressing assembly 23, and gripping assembly 22 move upwards, while simultaneously causing the stator 81 to rise.

[0089] After the movable base 27, adapter 271, centering assembly 40, pressing assembly 23, and gripping assembly 22 rise to their previous positions, the centering cylinder drive column 41 of the centering assembly 40 is moved downwards via the human-machine interface 72 to insert into the insertion hole 232 of the pressing assembly 23. This reduces the offset of the pressing assembly 23 and gripping assembly 22 relative to the vertical direction, improves their perpendicularity, and facilitates the vertical pressing of the stator 81 into the housing. Furthermore, the circumferential positioning drive component 233 and the circumferential positioning mating component 236 are engaged to maintain the stator 81 in a suitable pressing position, meeting the centering requirements of the stator 81 and improving the reliability of the pressing of the stator 81 into the housing.

[0090] After locking the stator 81, the trackless cylinder 16 is operated through the human-machine interface 72 to move the second mounting seat 30 from the first position to the assembly space 21 to the second position through the cooperation of the guide rail 11 and the slider 18. When the second mounting seat 30 moves to the second position, the second positioning detector 13 is triggered to stop the trackless cylinder 16. At the same time, the second mounting seat 30 is blocked by the second stop block 15 in the moving direction and stops moving. At this time, the second mounting seat 30 moves to the second position.

[0091] After the second mounting base 30 is moved to the second position, the positioning fixture 34 is removed from the second mounting position 32, and the heated housing is positioned by the first positioning part 331. At the same time, the shaft clamp 333 is rotated to clamp the housing, thereby realizing the installation of the heated housing on the second mounting position 32. After the housing is installed, the trackless cylinder 16 is operated through the human-machine interface 72 to move the second mounting base 30 from the second position to the first position. At this time, the housing on the second mounting base 30 is located directly below the stator 81, which helps to meet the verticality requirement of the two stators 81 being pressed smoothly into the housing at the same time.

[0092] After the housing is moved into place, press button 17 to drive the electric cylinder 261 downwards, which is controlled by the PLC electrical system 73. This causes the moving base 27, adapter 271, centering assembly 40, pressing assembly 23 and gripping assembly 22 to move downwards, and press the stator 81 gripped by the gripping assembly 22 into the cylinder of the housing, thus achieving the pressing of the stator 81 with the housing.

[0093] After the stator 81 is press-fitted, the centering cylinder drive column 41 of the centering assembly 40 is moved upward through the human-machine interface 72 to move away from the insertion hole 232, and the gripping assembly 22 is released, thus unlocking the stator 81. Pressing button 17 causes the PLC electrical system 73 to control the balancing cylinder 262 to drive upward, thereby moving the moving seat 27, adapter 271, centering assembly 40, pressing assembly 23, and gripping assembly 22 upward. Then, the trackless cylinder 16 is operated through the human-machine interface 72 to slide the second mounting seat 30 to the second position, realizing the reset of the stator press-fitting equipment 100, and removing the press-fitted stator 81 and the housing. At the same time, the press-fitting quality data is saved to the Manufacturing Execution System (MES) of the industrial control computer 71 to ensure that the assembly number corresponds one-to-one with the quality data of the individual parts. In case of after-sales failure, the quality data of the individual parts can be queried and traced through the assembly number, which is convenient and quick.

[0094] Other configurations and operations of the stator pressing apparatus 100 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0095] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention based on the specific circumstances.

[0096] In the description of this specification, the references to terms such as "embodiment," "specific embodiment," and "example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0097] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A stator press fitting apparatus characterized by, The stator press-fitting device comprises: a base; a first mounting seat mounted on the base and having an assembly space, the first mounting seat being provided with a plurality of grabbing assemblies and press-fitting assemblies; a second mounting seat movably mounted on the base, the second mounting seat having a plurality of first mounting positions and second mounting positions, wherein the first mounting positions are respectively used for mounting the stators so as to transfer the stators to the assembly space through the second mounting seat, the grabbing assemblies being used for grabbing the stators on the second mounting seat; the second mounting positions are used for mounting the casings so as to transfer the casings to the assembly space through the second mounting seat, the press-fitting assemblies being used for pressing the stators grabbed by the grabbing assemblies into the casings; the stator press-fitting device further comprises a plurality of centering assemblies mounted on the first mounting seat and having a column body telescopically extending in the up-down direction, the press-fitting assemblies being correspondingly mounted on the centering assemblies and having a socket, the column body being adapted to be inserted into the socket in the extended state, the grabbing assemblies being correspondingly mounted on the press-fitting assemblies, wherein the press-fitting assemblies comprise a first connecting part mounted on the centering assembly and provided with the socket and a second connecting part mounted on the first connecting part through a bearing, the bearing being a planar thrust bearing, the axis of the bearing being parallel to the up-down direction, the grabbing assemblies being mounted on the second connecting part, the stator press-fitting device further comprising a circumferential positioning driving member and a circumferential positioning cooperating member, the circumferential positioning driving member being arranged on the first connecting part or the centering assembly, the circumferential positioning cooperating member being arranged on the second connecting part, the circumferential positioning driving member and the circumferential positioning cooperating member being adapted to be inserted into each other so as to lock the second connecting part and the first connecting part in the circumferential direction, the column body is a columnar body with a taper, the socket is a tapered hole adapted to the column body in the extended state, when the column body is extended and inserted into the socket, the degree of deviation of the press-fitting assemblies and the grabbing assemblies relative to the vertical direction can be reduced, the perpendicularity of the press-fitting assemblies and the grabbing assemblies can be improved, and the press-fitting assemblies and the grabbing assemblies can facilitate subsequent vertical pressing of the stators into the casings; when the column body is retracted and separated from the socket, the press-fitting of the press-fitting assemblies and the grabbing assemblies on the stators can be automatically floated with the change of the stator press-fitting force, and the second connecting part can be rotated in the circumferential direction relative to the centering assembly through the bearing connected with the first connecting part.

2. The stator press fitting apparatus according to claim 1, characterized by The second mounting seat comprises: a supporting member mounted on the base and defining the second mounting positions; a positioning tool detachably mounted on the second mounting positions, the positioning tool defining the first mounting positions.

3. The stator press-fitting device according to claim 2, wherein The supporting member is provided with a first positioning part and a second positioning part, the first positioning part is used for inserting and positioning with the cabinet, and the second positioning part is used for inserting and positioning with the positioning tool; and / or, The positioning tool is provided with a circumferential positioning part, which is used for inserting and positioning with the stator.

4. The stator press fitting apparatus according to claim 2, characterized by The positioning tool comprises a plurality of cylinders fixedly connected, and the cylinders define the first mounting position.

5. The stator press fitting apparatus according to claim 1, characterized by The base is provided with a guide rail, a first position detector and a second position detector, the second mounting seat is in sliding fit with the guide rail, and the second mounting seat can move along the guide rail between a first position and a second position, the first position is located in the assembly space, and the second position is located out of the assembly space, the second mounting seat triggers the first position detector at the first position and triggers the second position detector at the second position.

6. The stator press fitting apparatus according to claim 1, characterized by The first mounting seat comprises: a guide column extending in the up-down direction and connected with the base at a lower part; a fixing seat installed at an upper part of the guide column, the fixing seat being provided with a longitudinal driving member; a moving seat movably installed on the guide column below the fixing seat in the up-down direction, a space below the moving seat being the assembly space, the press-fitting assembly and the grabbing assembly being installed on the moving seat, the longitudinal driving member being connected with the moving seat and used for driving the moving seat to move.

7. The stator press fitting apparatus according to claim 6, characterized by The moving seat is provided with a detachable adapter, and the press-fitting assembly and the grabbing assembly are installed on the adapter.

8. The stator press fitting apparatus according to claim 6, characterized by The longitudinal driving member comprises an electric cylinder and a balance cylinder.

9. The stator press fitting apparatus according to claim 6, characterized by Further comprising: a control assembly installed on the base and / or the first mounting seat, the control assembly being in communication connection with the base, the grabbing assembly and the longitudinal driving member.

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