Magnetic steel expanding device

Abstract

The utility model discloses a magnetic steel expanding device, and belongs to the technical field of magnetic steel. The magnetic steel expanding device comprises a mounting base, a rotating piece and a magnetic steel expanding assembly. Wherein the mounting seat is positioned above the back iron, and magnetic steel is arranged in the back iron; the rotating part is rotationally connected to the mounting seat around the Z axis; the radial direction of the rotating part is parallel to that of the back iron; the magnetic expansion assembly comprises a pushing and pressing piece, the pushing and pressing piece is slidably connected to the rotating piece in the radial direction of the rotating piece, and the pushing and pressing piece is used for pushing the magnetic steel outwards in the radial direction of the rotating piece so that the outer wall face of the magnetic steel can abut against the inner wall face of the back iron. According to the magnetic steel expanding device, a large number of magnetic steel in the back iron can be pushed by utilizing the number of the pushing and pressing pieces arranged in the limited installation space, the number of the pushing and pressing pieces does not need to be additionally increased in the limited space, the cost is low, and the practicability of the whole magnetic steel expanding device is good.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic steel, in particular to a magnetic steel expansion device. Background Art

[0002] At present, in the assembly process of the rotor of the motor, it is necessary to first install the magnet in the back iron and then perform magnet expansion operation on the magnet; wherein, the magnet expansion operation specifically refers to pushing the magnet radially outward along the back iron through the pushing piece in the magnet expansion device, so that the outer wall surface of the magnet abuts against the inner wall surface of the back iron, so as to eliminate the gap between the outer wall surface of the magnet and the inner wall surface of the back iron, thereby avoiding mutual collision between the magnet and the back iron when the back iron rotates at high speed, and thus better protecting the magnet and the back iron.

[0003] However, it is difficult to install a large number of push pieces in a magnetic steel device within a limited installation space, resulting in the inability to push a large number of magnetic steels through a magnetic steel device, making the practicality of the entire magnetic steel device poor. Utility Model Content

[0004] The purpose of the utility model is to propose a magnetic steel expansion device, which can utilize the number of pushing pieces arranged in a limited installation space to push a larger number of magnetic steels in the back iron, without adding an additional number of pushing pieces in the limited space. The cost is low and the practicality of the entire magnetic steel expansion device is good.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A magnetic steel expansion device, comprising:

[0007] A mounting seat, located above the back iron, wherein a magnetic steel is arranged inside the back iron;

[0008] A rotating member is connected to the mounting seat and rotates around the Z axis, wherein the radial direction of the rotating member is parallel to the radial direction of the back iron;

[0009] The magnetic expansion component includes a push piece, which is connected to the rotating member in a radial sliding manner along the rotating member, and is used to push the magnetic steel outward in the radial direction of the rotating member so that the outer wall surface of the magnetic steel abuts against the inner wall surface of the back iron.

[0010] As an optional solution, the magnetic steel expansion device further includes:

[0011] A reversing drive component, a fixed end of which is arranged on the mounting seat, and a driving end of the reversing drive component is connected to the rotating member to drive the rotating member and the pushing member to rotate around the Z axis.

[0012] As an optional solution, the reversing drive assembly includes:

[0013] A reversing drive member, a fixed end of which is disposed on the mounting seat;

[0014] The sliding member includes a sliding rod and an arc-shaped sliding groove that match each other. One end of the sliding rod is movably connected to the output rod of the reversing drive member, and the other end of the sliding rod passes through the arc-shaped sliding groove and is connected to the rotating member. The sliding rod can slide in the arc-shaped sliding groove to drive the rotating member to rotate around the Z axis relative to the mounting seat.

[0015] As an optional solution, the sliding member further includes:

[0016] A limit block is provided on the sliding path of the sliding rod at the opposite ends of the arc-shaped sliding groove, and the limit block is fixedly connected to the mounting seat. The sliding rod can slide along the arc-shaped sliding groove until it abuts against the limit block.

[0017] As an optional solution, the pushing member includes:

[0018] A mounting plate, one end of which is used to be slidably mounted on the rotating member along the radial direction of the rotating member;

[0019] A push plate is vertically connected to the other end of the mounting plate, the push plate is arranged toward the outer periphery of the rotating member, and the push plate is used to contact and push the magnetic steel.

[0020] As an optional solution, a guide block is provided on one of the mounting plate and the rotating member, and a guide rail is provided on the other one, wherein the guide rail extends in a radial direction of the rotating member, and the guide block can slide along the guide rail.

[0021] As an optional solution, the magnetic expansion component also includes:

[0022] A first driving member, a fixed end of which is disposed on the rotating member;

[0023] A connecting plate, a driving end of the first driving member is connected to the connecting plate to drive the connecting plate to slide radially along the rotating member, and the connecting plate is connected to the mounting plate.

[0024] As an optional solution, the rotating member includes:

[0025] A connecting rod and two rotating rings, the two rotating rings are parallel and spaced apart, the connecting rod is connected between the two rotating rings, the rotating ring located on the upper layer is slidably connected to the mounting seat around the Z axis, the first driving member is located on the rotating ring of the lower layer, and the connecting plate passes through the rotating ring of the lower layer downward along the Z axis and is connected to the mounting plate.

[0026] As an optional solution, a plurality of the magnetic expansion components are provided, and the pushing members of the plurality of magnetic expansion components are arranged in a ring shape along the circumference of the rotating member.

[0027] As an optional solution, the magnetic steel expansion device further includes:

[0028] Pedestal;

[0029] The slide is slidably connected to the base along the X-axis, the slide is connected to a transfer frame, and the mounting seat is slidably connected to the transfer frame along the Z-axis.

[0030] The beneficial effects of the utility model are:

[0031] By making the rotating member rotate around the Z axis and connected to the mounting seat, and making the radial direction of the rotating member parallel to the radial direction of the back iron, the pushing member in the magnetization expansion assembly is slidably connected to the rotating member along the radial direction of the rotating member, so that the pushing member can push the magnetic steel in the back iron outward along the radial direction of the rotating member, so that the outer wall surface of the magnetic steel abuts against the inner wall surface of the back iron, thereby realizing the magnetization expansion operation on the magnetic steel in the back iron, thereby eliminating the gap between the outer wall surface of the magnetic steel and the inner wall surface of the back iron, and avoiding the mutual collision between the magnetic steel and the back iron when the back iron rotates at a high speed, thereby better protecting the magnetic steel and the back iron; and, making the rotating member rotate around the Z axis and connected to the mounting seat, when the pushing member pushes the magnetic steel in the back iron, the pushing member can push the magnetic steel in the back iron outward along the radial direction of the rotating member, so that the outer wall surface of the magnetic steel abuts against the inner wall surface of the back iron, thereby realizing the magnetization expansion operation on the magnetic steel in the back iron, thereby eliminating the gap between the outer wall surface of the magnetic steel and the inner wall surface of the back iron, and avoiding the mutual collision between the magnetic steel and the back iron when the back iron rotates at a high speed, thereby better protecting the magnetic steel and the back iron; After the outer wall surface of the magnet in the position abuts against the inner wall surface of the back iron, the rotating part is rotated at an angle around the Z axis relative to the mounting seat, so that the pushing part on the rotating part can also rotate synchronously at an angle, so that the pushing part can push the outer wall surface of the magnet set to match the angle to abut against the inner wall surface of the back iron, thereby making it possible to utilize the number of pushing parts set in a limited installation space to achieve the pushing of a larger number of magnets in the back iron, that is, a larger number of magnets are pushed by a limited number of pushing parts in a magnet expansion device, and there is no need to increase the number of pushing parts in a limited space, so that the practicality of the entire magnet expansion device is better.

[0032] By providing the limit block, the sliding rod can abut against the limit block when sliding along the arc-shaped sliding groove, so that the limit block can limit the sliding stroke of the sliding rod in the arc-shaped sliding groove.

[0033] By setting up multiple magnetic expansion components, and making each magnetic expansion component include a first driving member, a connecting plate and a pushing member, each magnetic expansion component can perform magnetic expansion operations on the magnetic steel completely independently, so that the magnetic expansion operations of each magnetic steel performed by each magnetic expansion component do not interfere with each other, thereby ensuring that the independence of the magnetic expansion of each magnetic steel is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of the magnetic expansion steel device provided by the utility model;

[0035] Figure 2 This is a schematic diagram of the assembly structure of the reversing drive assembly provided by the utility model on the mounting seat Figure 1 ;

[0036] Figure 3 This is a schematic diagram of the assembly structure of the reversing drive assembly provided by the utility model on the mounting seat Figure 2 ;

[0037] Figure 4 It is a schematic diagram of the assembly structure between the mounting seat, the rotating member and the magnetic expansion component provided by the utility model;

[0038] Figure 5 It is a schematic diagram of the assembly structure between the lower rotating ring and the magnetic expansion component provided by the utility model.

[0039] Description of reference numerals:

[0040] 81-mounting seat; 82-rotating member; 821-rotating ring; 822-connecting rod; 83-magnetic expansion assembly; 831-pushing member; 8311-mounting plate; 8312-pushing plate; 832-first driving member; 833-connecting plate; 834-guide rail; 835-guide block; 84-reversing driving assembly; 841-reversing driving member; 8411-output rod; 8421-sliding rod; 8422-arc sliding groove; 8423-limiting block; 85-base; 86-slide; 87-transfer rack. DETAILED DESCRIPTION

[0041] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0042] Any feature disclosed in this specification, unless otherwise stated, may be replaced by other equivalent or alternative features having similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features. Throughout the specification, the same reference numerals indicate the same elements.

[0043] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clearly, the technical solutions of the present invention are further explained below with reference to the accompanying drawings and through specific implementation methods.

[0044] In this embodiment, a magnetizing steel expansion device is proposed, which is used to perform magnetizing steel expansion operation on the magnet placed in the back iron, that is, the magnetizing steel expansion device can automatically push the magnet placed in the back iron outward along the radial direction of the back iron, so that the outer wall surface of the magnet abuts against the inner wall surface of the back iron, and realize the magnetizing operation on the magnet in the back iron, thereby eliminating the gap between the outer wall surface of the magnet and the inner wall surface of the back iron. Among them, the back iron is a support member that can provide installation support for the magnet, and the back iron is a common back iron structure in the rotor of the motor in the prior art. A plurality of magnets are arranged in a ring shape along the circumference of the back iron, and each magnet needs to be magnetized.

[0045] Specifically, Figure 1 As shown, the magnetizing steel device includes a mounting seat 81, a rotating member 82 and a magnetizing steel component 83; wherein the mounting seat 81 is spaced apart and located above the back iron; the rotating member 82 is connected to the bottom end surface of the mounting seat 81 by rotating around the Z axis, and the radial direction of the rotating member 82 is parallel to the radial direction of the back iron; the magnetizing steel component 83 includes a pushing member 831, which is connected to the rotating member 82 by sliding along the radial direction of the rotating member 82, and the pushing member 831 is used to push the magnet outward along the radial direction of the rotating member 82 so that the outer wall surface of the magnet abuts against the inner wall surface of the back iron to achieve magnetization of the magnet.

[0046] By making the rotating member 82 rotate around the Z axis and connected to the mounting seat 81, and making the radial direction of the rotating member 82 parallel to the radial direction of the back iron, the pushing member 831 in the magnetization expansion assembly 83 is connected to the rotating member 82 by sliding along the radial direction of the rotating member 82, so that the pushing member 831 can push the magnet in the back iron outward along the radial direction of the rotating member 82, so that the outer wall surface of the magnet abuts against the inner wall surface of the back iron, thereby realizing the magnetization expansion operation on the magnet in the back iron, thereby eliminating the gap between the outer wall surface of the magnet and the inner wall surface of the back iron, and avoiding mutual collision between the magnet and the back iron when the back iron rotates at high speed, thereby better protecting the magnet and the back iron.

[0047] Compared with the prior art, the magnetic steel expansion device in this embodiment is additionally provided with a rotating member 82 that can rotate, and the magnetic expansion component 83 is arranged on the rotating member 82; by rotating the rotating member 82 around the Z axis and connecting to the mounting seat 81, after the pushing member 831 pushes the outer wall surface of the magnetic steel at this position to abut against the inner wall surface of the back iron, the rotating member 82 is rotated at an angle around the Z axis relative to the mounting seat 81, so that the pushing member 831 on the rotating member 82 can also be synchronously rotated at an angle, so that the pushing member 831 can push the outer wall surface of the magnetic steel arranged to match the angle to abut against the inner wall surface of the back iron, so that the number of pushing members 831 arranged in a limited installation space can be used to achieve the pushing of a large number of magnetic steels in the back iron, that is, a large number of magnetic steels are pushed by a limited number of pushing members 831 in a magnetic steel expansion device, and there is no need to increase the number of pushing members 831 in a limited space, so that the practicality of the entire magnetic steel expansion device is better.

[0048] Specifically, since a plurality of magnetic steels are arranged in the back iron, correspondingly, Figure 1 As shown, the magnetic expansion assembly 83 is provided with multiple push pieces 831 of the multiple magnetic expansion assemblies 83 are arranged in a ring shape along the circumference of the rotating member 82, so that multiple magnetic steels can be pushed simultaneously by each push piece 831 to perform magnetic expansion operation, so that the working efficiency of magnetic expansion is higher.

[0049] For example, eight pushing pieces 831 are provided in the magnetic steel expansion device in this embodiment, and sixteen magnetic steels are provided in the back iron. The eight pushing pieces 831 are first used to complete the magnetic expansion operation on the eight magnetic steels; then the rotating piece 82 is used to drive the eight pushing pieces 831 to rotate an angle as a whole, and then the eight pushing pieces 831 after the rotation angle complete the magnetic expansion operation on the remaining eight magnetic steels in the back iron; that is, through the magnetic steel expansion device in this embodiment, a smaller number of pushing pieces 831 can be used to complete the magnetic expansion operation on a larger number of magnetic steels in the back iron, and there is no need to set a larger number of pushing pieces 831, which can make the cost of the entire magnetic steel expansion device lower.

[0050] Furthermore, if Figures 1 to 3 As shown, the magnetic steel device also includes a reversing drive component 84, the fixed end of the reversing drive component 84 is arranged on the mounting seat 81, and the driving end of the reversing drive component 84 is connected to the rotating member 82 to drive the rotating member 82 and the pushing member 831 thereon to rotate around the Z axis.

[0051] Specifically, Figure 2 and Figure 3As shown, the reversing drive assembly 84 includes a reversing drive member 841 and a sliding member; wherein the fixed end of the reversing drive member 841 is arranged on the mounting seat 81; the sliding member includes a sliding rod 8421 and an arc-shaped sliding groove 8422 that match each other, one end of the sliding rod 8421 is movably connected to the output rod 8411 of the reversing drive member 841, the other end of the sliding rod 8421 passes through the arc-shaped sliding groove 8422 and is fixedly connected to the rotating member 82 through a connecting member, and the sliding rod 8421 can slide in an arc in the arc-shaped sliding groove 8422 to drive the rotating member 82 and the pushing member 831 thereon to rotate as a whole relative to the mounting seat 81 around the Z axis. In this embodiment, the reversing drive member 841 can be specifically a linear cylinder, and the connecting member can be specifically a block structure.

[0052] Furthermore, if Figure 2 and Figure 3 As shown, the sliding member also includes a limit block 8423. On the sliding path of the sliding rod 8421, the relative two ends of the arc-shaped sliding groove 8422 are respectively provided with limit blocks 8423, and the limit blocks 8423 are fixedly connected to the mounting seat 81. The sliding rod 8421 can slide along the arc-shaped sliding groove 8422 until it abuts against the limit block 8423, so that the limit block 8423 can limit the sliding stroke of the sliding rod 8421 in the arc-shaped sliding groove 8422.

[0053] Specifically, Figure 4 and Figure 5 As shown, the pushing member 831 includes a mounting plate 8311 and a pushing plate 8312; wherein, one end of the mounting plate 8311 is used to be slidably installed to the rotating member 82 along the radial direction of the rotating member 82; the pushing plate 8312 is vertically connected to the other end of the mounting plate 8311, and the pushing plate 8312 is set toward the outer periphery of the rotating member 82, and the pushing plate 8312 is used to contact and push the magnet.

[0054] It is worth noting that the size and shape of the push plate 8312 match the size and shape of the magnet, and the material of the push plate 8312 is a flexible material, so that the push plate 8312 can flexibly push the magnet to avoid damaging the magnet, thereby better protecting the magnet.

[0055] Furthermore, if Figure 4 and Figure 5 As shown, the rotating member 82 includes a plurality of connecting rods 822 and two coaxially arranged rotating rings 821. The two rotating rings 821 are parallel and spaced apart. A plurality of connecting rods 822 are connected between the two rotating rings 821. The connecting rods 822 extend along the Z axis. The rotating ring 821 located on the upper layer is slidably connected to the bottom end surface of the mounting seat 81 around the Z axis, and the mounting plate 8311 of the push member 831 is slidably connected to the rotating ring 821 located on the lower layer.

[0056] Specifically, Figure 4and Figure 5 As shown, a guide block 835 is provided on one of the mounting plate 8311 and the rotating ring 821 located at the lower layer of the rotating member 82, and a guide rail 834 is provided on the other, the guide rail 834 extends in the radial direction of the rotating ring 821, and the guide block 835 can slide along the guide rail 834 to ensure the guiding property and stability of the push member 831 sliding on the rotating ring 821 along the radial direction of the rotating ring 821. In this embodiment, the guide block 835 is provided on the mounting plate 8311, and the guide rail 834 is provided on the bottom end surface of the rotating ring 821 at the lower layer.

[0057] Furthermore, if Figure 4 and Figure 5 As shown, the magnetic expansion assembly 83 further includes a first driving member 832 and a connecting plate 833; wherein the fixed end of the first driving member 832 is disposed on the rotating ring 821 located at the lower layer in the rotating member 82, the driving end of the first driving member 832 is connected to the connecting plate 833 to drive the connecting plate 833 to slide along the radial direction of the rotating member 82, the connecting plate 833 extends along the Z axis, and the connecting plate 833 passes downward along the Z axis through the rotating ring 821 at the lower layer and is fixedly connected to the mounting plate 8311. In this embodiment, the first driving member 832 can be specifically a linear cylinder.

[0058] It is worth noting that if Figure 4 and Figure 5 As shown, since there are multiple magnetic expansion components 83, and each magnetic expansion component 83 includes a first driving member 832, a connecting plate 833 and a pushing member 831, each magnetic expansion component 83 can perform magnetic expansion operations on the magnetic steel completely independently, that is, the magnetic expansion operations of each magnetic steel performed by each magnetic expansion component 83 do not interfere with each other, so that the independence of the magnetic expansion of each magnetic steel is better.

[0059] Furthermore, if Figure 1 As shown, the magnetic steel expansion device also includes a base 85 and a slide 86; wherein the slide 86 is slidably connected to the base 85 along the X-axis, and a transfer frame 87 is connected to the slide 86, the transfer frame 87 extends along the Z-axis, and the mounting seat 81 is slidably connected to the transfer frame 87 along the Z-axis.

[0060] By setting up the slide 86, the slide 86 can drive the intermediate transfer frame 87 and the mounting seat 81 to slide along the X-axis as a whole, so that the pushing piece 831 on the mounting seat 81 moves to just above the back iron; then the mounting seat 81 is moved downward along the Z-axis relative to the intermediate transfer frame 87 until the pushing plate 8312 of the pushing piece 831 abuts against the magnet in the back iron, so that the pushing plate 8312 can push the magnet radially along the back iron.

[0061] The specific working process of the magnetic steel expansion device in this embodiment is as follows:

[0062] First, the slide 86 is made to slide along the X-axis relative to the base 85 to drive the intermediate frame 87 and the mounting seat 81 to slide along the X-axis as a whole, so that the pushing piece 831 on the mounting seat 81 moves to the top of the back iron. At this time, the pushing plate 8312 of the pushing piece 831 is set corresponding to the magnet in the back iron.

[0063] Afterwards, the mounting seat 81 is moved downward along the Z axis relative to the intermediate frame 87 to drive the rotating member 82 and the magnetic expansion assembly 83 thereon to move downward along the Z axis as a whole, so that the pushing plate 8312 of the pushing member 831 abuts against the magnet in the back iron.

[0064] Then, the first driving member 832 drives the connecting plate 833 to slide radially along the rotating member 82, so as to drive the pushing member 831 to move radially along the rotating member 82, so that the pushing plate 8312 pushes the magnet outward radially along the rotating member 82 until the outer wall surface of the magnet abuts against the inner wall surface of the back iron.

[0065] Finally, the reversing drive member 841 drives the sliding rod 8421 to rotate in the arc-shaped sliding groove 8422, that is, the sliding rod 8421 slides in an arc in the arc-shaped sliding groove 8422, so as to drive the rotating member 82 and each magnetizing component 83 thereon to rotate an angle around the Z axis relative to the mounting seat 81 as a whole, so that each magnetizing component 83 on the rotating member 82 corresponds to each magnet that has not undergone magnetizing operation in the magnet; repeat the above steps, so that the pushing plates 8312 of each magnetizing component 83 can respectively push the magnets in the back iron to perform magnetizing operation, until the outer wall surfaces of all the magnets in the back iron are against the inner wall surfaces of the back iron; so as to complete the entire magnetizing process.

[0066] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A magnetic steel expansion device, characterized in that: include: A mounting seat (81) is located above the back iron, wherein a magnetic steel is arranged inside the back iron; A rotating member (82) is connected to the mounting seat (81) and is rotatable about a Z axis, wherein the radial direction of the rotating member (82) is parallel to the radial direction of the back iron; The magnetic expansion assembly (83) comprises a pushing member (831), wherein the pushing member (831) is connected to the rotating member (82) in a radially sliding manner of the rotating member (82), and the pushing member (831) is used to push the magnetic steel outward in the radial direction of the rotating member (82) so that the outer wall surface of the magnetic steel abuts against the inner wall surface of the back iron.

2. The magnetic expansion steel device according to claim 1, characterized in that: The magnetic steel expansion device also includes: A reversing drive assembly (84) has a fixed end disposed on the mounting seat (81), and a driving end of the reversing drive assembly (84) is connected to the rotating member (82) to drive the rotating member (82) and the pushing member (831) to rotate around the Z axis.

3. The magnetic expansion steel device according to claim 2, characterized in that: The reversing drive assembly (84) comprises: A reversing driving member (841), a fixed end of which is arranged on the mounting seat (81); The sliding member comprises a sliding rod (8421) and an arc-shaped sliding groove (8422) which match each other. One end of the sliding rod (8421) is movably connected to the output rod (8411) of the reversing drive member (841). The other end of the sliding rod (8421) passes through the arc-shaped sliding groove (8422) and is connected to the rotating member (82). The sliding rod (8421) can slide in the arc-shaped sliding groove (8422) to drive the rotating member (82) to rotate around the Z axis relative to the mounting seat (81).

4. The magnetic steel expansion device according to claim 3, characterized in that: The sliding member further comprises: A limit block (8423) is provided on the sliding path of the sliding rod (8421), and the limit blocks (8423) are respectively provided at the opposite two ends of the arc-shaped sliding groove (8422); the limit block (8423) is fixedly connected to the mounting seat (81), and the sliding rod (8421) can slide along the arc-shaped sliding groove (8422) to abut against the limit block (8423).

5. The magnetic expansion steel device according to any one of claims 1 to 4, characterized in that: The pushing member (831) comprises: A mounting plate (8311), one end of which is used to be slidably mounted on the rotating member (82) along the radial direction of the rotating member (82); A push plate (8312), wherein the push plate (8312) is vertically connected to the other end of the mounting plate (8311), and the push plate (8312) is arranged toward the outer periphery of the rotating member (82), and the push plate (8312) is used to contact and push the magnetic steel.

6. The magnetic expansion steel device according to claim 5, characterized in that: A guide block (835) is provided on one of the mounting plate (8311) and the rotating member (82), and a guide rail (834) is provided on the other. The guide rail (834) extends radially along the rotating member (82), and the guide block (835) can slide along the guide rail (834).

7. The magnetic expansion steel device according to claim 5, characterized in that: The magnetic expansion component (83) further comprises: A first driving member (832), a fixed end of which is disposed on the rotating member (82); A connecting plate (833), the driving end of the first driving member (832) is connected to the connecting plate (833) to drive the connecting plate (833) to slide radially along the rotating member (82), and the connecting plate (833) is connected to the mounting plate (8311).

8. The magnetic expansion steel device according to claim 7, characterized in that: The rotating member (82) comprises: A connecting rod (822) and two rotating rings (821), the two rotating rings (821) are parallel and spaced apart, the connecting rod (822) is connected between the two rotating rings (821), the rotating ring (821) located on the upper layer is slidably connected to the mounting seat (81) around the Z axis, the first driving member (832) is located on the rotating ring (821) of the lower layer, and the connecting plate (833) passes through the rotating ring (821) of the lower layer downward along the Z axis and is connected to the mounting plate (8311).

9. The magnetic expansion steel device according to any one of claims 1 to 4, characterized in that: The magnetic expansion components (83) are provided in plurality, and the pushing members (831) of the plurality of magnetic expansion components (83) are arranged in a ring shape along the circumferential direction of the rotating member (82).

10. The magnetic expansion steel device according to any one of claims 1 to 4, characterized in that: The magnetic steel expansion device also includes: Base (85); The slide (86) is slidably connected to the base (85) along the X-axis, the slide (86) is connected to a transfer frame (87), and the mounting seat (81) is slidably connected to the transfer frame (87) along the Z-axis.

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