Magnetic steel pushing device

Abstract

The utility model discloses a magnetic steel pushing device, and belongs to the technical field of magnetic steel. The magnetic steel pushing device comprises a magnetic steel pushing mechanism, and the magnetic steel pushing mechanism comprises a supporting stand, a magnetic steel pushing air cylinder and a pushing and pressing piece. The supporting stand is located on one side of the profiling back iron, a plurality of magnetic steel pressing plates are annularly installed in the profiling back iron at intervals in a positioned mode, magnetic steel is placed between every two adjacent magnetic steel pressing plates, and the magnetic steel is magnetically attracted into the profiling back iron; the fixed end of the magnet pushing air cylinder is used for being connected to the supporting stand, and the air supply pressure of the magnet pushing air cylinder can be adjusted. One end of the pushing and pressing piece is connected with an output shaft of the magnet pushing air cylinder to drive the pushing and pressing piece to move in the radial direction of the profiling back iron, so that the other end of the pushing and pressing piece abuts against the magnetic steel towards the center close to the profiling back iron, and the magnetic steel is tightly attached to the magnetic steel pressing plate in a wedge shape. The magnetic steel pushing device can flexibly push and press the magnetic steel, so that the magnetic steel can be well protected in the process of pushing the magnetic steel.

Description

Technical Field

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

[0002] During the assembly process of the motor's rotor, a plurality of magnetic steel pressure plates are first installed at annular intervals inside the contoured back iron, and magnets are placed between two adjacent magnetic steel pressure plates by magnetic attraction. Then, the magnetic push cylinder drives the pushing piece to move radially along the contoured back iron until it abuts against and pushes the magnets, so that the magnets move inside the contoured back iron toward the center of the contoured back iron, thereby achieving wedge-shaped adhesion between the magnets and the magnetic steel pressure plates.

[0003] However, since the pushing force applied by the magnetic cylinder to the pushing member is fixed, the problem of excessive pushing force of the magnetic steel by the pushing member and damaging the magnetic steel may occur easily. Utility Model Content

[0004] The utility model aims to provide a magnetic steel pushing device, which can realize flexible pushing of the magnetic steel, so as to better protect the magnetic steel in the process of pushing the magnetic steel.

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

[0006] A magnetic steel pushing device includes a magnetic steel pushing mechanism, wherein the magnetic steel pushing mechanism includes:

[0007] The support frame is located on one side of the profiling back iron, and a plurality of magnetic steel pressing plates are installed in the profiling back iron in an annular manner and positioned therein, and a magnetic steel is placed between two adjacent magnetic steel pressing plates, and the magnetic steel is magnetically adsorbed in the profiling back iron;

[0008] A magnetic push cylinder, the fixed end of which is used to be connected to the support frame, and the air supply pressure of the magnetic push cylinder can be adjusted;

[0009] A pushing piece, one end of which is connected to the output shaft of the pushing magnetic cylinder to drive the pushing piece to move radially along the contoured back iron, so that the other end of the pushing piece pushes the magnetic steel toward the center of the contoured back iron, so that the magnetic steel is wedge-shaped and tightly attached to the magnetic steel pressure plate.

[0010] As an optional solution, the magnetic steel pushing device includes at least two magnetic steel pushing mechanisms, and the two magnetic steel pushing mechanisms are symmetrically arranged along the radial direction of the contoured back iron.

[0011] As an optional solution, the pushing member includes:

[0012] A first connecting plate, fixedly connected to the output shaft of the magnetic pushing cylinder;

[0013] A push plate is vertically connected to the first connecting plate, the push plate matches the magnetic steel, and the push plate is used to push the magnetic steel.

[0014] As an optional solution, the bottom end surface of the push plate is provided with a step surface, and the step surface is used to abut against the magnetic steel so that the push plate is pressed against the magnetic steel.

[0015] As an optional solution, the push plate is made of a non-magnetic flexible material.

[0016] As an optional solution, the magnetic steel pushing device further includes:

[0017] A driving component, whose fixed end is arranged on the supporting frame, and a driving end of the driving component is connected to the pushing magnetic cylinder to drive the pushing magnetic cylinder and the pushing member to move along the Z axis or the radial direction of the contoured back iron.

[0018] As an optional solution, the driving component includes:

[0019] A driving member, a fixed end of which is connected to the supporting frame;

[0020] The mounting seat is located on the top surface of the support frame, and the driving end of the driving member is connected to the mounting seat to drive the mounting seat to move along the Z axis. The mounting seat is used to drive the push magnetic cylinder and the pushing member to move along the Z axis.

[0021] As an optional solution, the drive assembly further includes:

[0022] A movable plate, located below the mounting seat;

[0023] A guide column, one end of which is connected to the movable plate, and the other end of which passes through the support frame and is connected to the mounting seat;

[0024] The guide sleeve is fixedly connected to the support frame, the guide sleeve extends along the Z axis, and the guide column is slidably inserted into the guide sleeve along the Z axis.

[0025] As an optional solution, the drive assembly further includes:

[0026] A transversely movable module, a fixed end of which is connected to the mounting seat;

[0027] A second connecting plate, the fixed end of the push-magnetic cylinder is arranged on the second connecting plate, and the second connecting plate is connected to the driving end of the lateral moving module to drive the second connecting plate to move radially along the contoured back iron.

[0028] As an optional solution, one of the mounting seat and the second connecting plate is provided with a guide block, and the other is provided with a guide rail, the guide rail extends radially along the contoured back iron, and the guide block can slide on the guide rail.

[0029] The beneficial effects of the utility model are:

[0030] By arranging the support frame on one side of the profiling back iron, installing multiple magnetic steel pressure plates at annular intervals inside the profiling back iron, and placing magnetic steel between two adjacent magnetic steel pressure plates, and then making the pushing magnetic cylinder drive the pushing piece, so that the pushing piece moves along the radial direction of the profiling back iron to abut and push the magnetic steel, so that the magnetic steel moves in the profiling back iron toward the center of the profiling back iron, so that the wedge-shaped contact between the magnetic steel and the magnetic steel pressure plate can be achieved in the process of abutting and pushing; and, since the magnetic steel is magnetically adsorbed in the profiling back iron, it can be ensured that the magnetic steel will not be separated from the profiling back iron during the process of pushing the magnetic steel, so as to ensure the smoothness of pushing the magnetic steel; at the same time, since the air supply pressure of the pushing magnetic cylinder can be adjusted, the pushing force applied by the pushing magnetic cylinder to the pushing piece can be adjusted, so as to avoid damage to the magnetic steel due to excessive pushing force of the pushing piece pushing the magnetic steel, and then the pushing force on the magnetic steel can be adjusted according to demand, so as to achieve flexible pushing on the magnetic steel, so as to better protect the magnetic steel in the process of pushing the magnetic steel.

[0031] By arranging two magnetic steel pushing mechanisms symmetrically along the radial direction of the profiling back iron to form a group of magnetic steel pushing mechanisms, the pushing parts in the two magnetic steel pushing mechanisms can push the magnetic steel toward the center position of the profiling back iron separately and simultaneously; on the one hand, the pushing efficiency of the magnetic steel can be accelerated to ensure higher working efficiency; on the other hand, the force on the profiling back iron can be more balanced, thereby ensuring the stability and reliability of the profiling back iron in the process of pushing the magnetic steel.

[0032] By setting a step surface on the bottom end surface of the push plate, the step surface is used to abut against the magnet, so that the push plate is pressed against the magnet, thereby ensuring the abutment reliability between the push plate and the magnet, and avoiding the push plate and the magnet from separating from each other during the pushing process.

[0033] By using a non-magnetic flexible material as the material of the pushing plate used to push the magnet; on the one hand, it can avoid magnetic adsorption between the pushing plate and the magnet, which is conducive to the direct separation of the pushing plate and the magnet after the pushing is completed; on the other hand, it can make the pushing plate and the magnet flexibly abut against each other, so as to provide a certain buffering effect for the magnet and better protect the magnet. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of a magnetic steel pushing device (provided with a contoured back iron) provided by the utility model;

[0035] Figure 2It is a structural schematic diagram of the contoured back iron provided by the utility model;

[0036] Figure 3 yes Figure 2 A schematic diagram of the local enlarged structure at B in the middle;

[0037] Figure 4 It is a structural schematic diagram of the magnetic steel pushing mechanism provided by the utility model;

[0038] Figure 5 yes Figure 4 Schematic diagram of the local enlarged structure at point A in the middle.

[0039] Description of reference numerals:

[0040] 40-push magnetic steel mechanism;

[0041] 41-support frame; 42-push-magnetic cylinder; 43-push member; 431-first connecting plate; 432-push plate; 4321-step surface; 44-drive assembly; 441-drive member; 4421-first sub-plate; 4422-second sub-plate; 4423-third sub-plate; 4424-guide rail; 443-movable plate; 444-guide column; 445-guide sleeve; 446-lateral moving module; 447-second connecting plate; 4471-guide block; 45-profiled back iron; 46-magnet; 47-magnetic steel pressure plate; 491-first bearing surface; 492-second bearing surface. DETAILED DESCRIPTION

[0042] 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.

[0043] 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.

[0044] 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.

[0045] This embodiment proposes a magnetic steel pushing device, such as Figure 1 and Figure 2As shown, a plurality of magnetic steel pressure plates 47 are installed in an annular manner and positioned in the profiling back iron 45, a magnetic steel 46 is placed between two adjacent magnetic steel pressure plates 47 in the profiling back iron 45, and the magnetic steel 46 is magnetically adsorbed in the profiling back iron 45, and the magnetic steel pushing device is used to automatically push the magnetic steel 46 along the radial direction of the profiling back iron 45 toward the center position of the profiling back iron 45, so that the magnetic steel 46 and the magnetic steel pressure plate 47 can be closely wedge-fitted; wherein, the profiling back iron 45 is a support member that can provide installation support for the magnetic steel 46 and the magnetic steel pressure plate 47, and the structure of the profiling back iron 45 is similar to the structure of the back iron in the rotor of the motor in the prior art.

[0046] Specifically, Figures 1 to 5 As shown, the magnetic steel pushing device includes a magnetic steel pushing mechanism 40, and the magnetic steel pushing mechanism 40 includes a support frame 41, a magnetic steel pushing cylinder 42 and a pushing piece 43; wherein, the support frame 41 is located on one side of the contoured back iron 45, and the contoured back iron 45 can slide and rotate; the fixed end of the magnetic steel pushing cylinder 42 is used to be connected to the support frame 41, and the air supply pressure of the magnetic steel pushing cylinder 42 can be adjusted; one end of the pushing piece 43 is connected to the output shaft of the magnetic steel pushing cylinder 42 to drive the pushing piece 43 to move along the radial direction of the contoured back iron 45, so that the other end of the pushing piece 43 pushes the magnetic steel 46 toward the center of the contoured back iron 45, so that the magnetic steel 46 is wedge-shaped and tightly attached to the magnetic steel pressure plate 47. The specific pushing direction of the magnetic steel 46 pushed by the pushing piece 43 is as follows: Figure 3 As shown by arrow C in FIG.

[0047] By arranging the support frame 41 on one side of the profiling back iron 45, and installing a plurality of magnetic steel pressure plates 47 at annular intervals inside the profiling back iron 45, and placing the magnetic steel 46 between two adjacent magnetic steel pressure plates 47, and then making the magnetic cylinder 42 drive the pushing piece 43, so that the pushing piece 43 moves along the radial direction of the profiling back iron 45 to abut and push the magnetic steel 46, so that the magnetic steel 46 moves inside the profiling back iron 45 toward the center of the profiling back iron 45, so that the wedge-shaped contact between the magnetic steel 46 and the magnetic steel pressure plate 47 can be achieved during the abutting and pushing process; then the profiling back iron 45 is rotated step by step by an angle, so that the next magnetic steel 46 to be pushed is set corresponding to the pushing piece 43, until all the magnetic steels 46 in the profiling back iron 45 are pushed.

[0048] Compared with the prior art, the magnetic steel pushing device in this embodiment changes the pushing method of the magnetic steel 46; by making the air supply pressure of the magnetic steel pushing cylinder 42 adjustable, the pushing force applied by the magnetic steel pushing cylinder 42 to the pushing member 43 can be adjusted, so as to avoid damaging the magnetic steel 46 due to excessive pushing force of the pushing member 43 pushing the magnetic steel 46, and then the pushing force on the magnetic steel 46 can be adjusted according to demand, so as to achieve flexible pushing of the magnetic steel 46, so as to better protect the magnetic steel 46 in the process of pushing the magnetic steel 46. Here, the specific adjustment size of the air supply pressure of the magnetic steel pushing cylinder 42 is not limited, and needs to be determined according to the actual pushing working condition of the magnetic steel 46.

[0049] It is worth noting that, since there is no limit on the Z-axis of the magnet 46 in the contoured back iron 45, the magnet 46 is magnetically adsorbed in the contoured back iron 45 as mentioned above, so that the magnet 46 will not be separated from the contoured back iron 45 during the pushing process, so as to ensure the smooth pushing of the magnet 46.

[0050] And, if Figure 2 and Figure 3 As shown, since in the rotor structure, the top surface of the magnet 46 needs to be higher than the top surface of the magnet pressure plate 47, on the contrary, in the contoured back iron 45 adapted to the back iron in the rotor structure, it is necessary to make the first bearing surface 491 for placing the magnet 46 lower than the second bearing surface 492 for placing the magnet pressure plate 47, so that there is a height difference between the first bearing surface 491 and the second bearing surface 492; and, because the magnet pressure plate 47 is tightly fixed to the magnet 46 by its own wedge-shaped structure, that is, the magnet 46 and the magnet pressure plate 47 are matched with an inclined surface; therefore, a positioning groove for positioning the magnet 46 can be formed between the two adjacent side surfaces between the first bearing surface 491 and the second bearing surfaces 492 adjacent to each other on both sides.

[0051] By forming a positioning groove between two adjacent second bearing surfaces 492, after the magnet 46 is placed in the contoured back iron 45, when the pushing member 43 pushes the magnet 46 from the outside to the inside along the radial direction of the contoured back iron 45, the positioning groove can accurately position the magnet 46, thereby ensuring the position accuracy of the magnet 46 during the pushing process and preventing the problem of offset.

[0052] It is worth mentioning that, in the present embodiment, the pushing member 43 is driven by the pushing magnetic cylinder 42 so that the pushing member 43 pushes the magnet 46 toward the center position of the contoured back iron 45, which can not only realize the wedge-shaped fit between the magnet 46 and the magnet pressure plate 47 mentioned above and ensure the positioning accuracy between the magnet 46 and the magnet pressure plate 47; it can also make the magnet 46 move away from the outer side surface of the contoured back iron 45, so that in the subsequent process of transferring the magnet 46 and the magnet pressure plate 47 as a whole into the back iron, it can avoid the magnet 46 directly abutting against the groove edge of the back iron due to the excessive protrusion of the outer circle size of the magnet 46, thereby avoiding the magnet 46 from being broken or damaged by excessive mechanical stress when the magnet 46 is subsequently transferred to the groove of the back iron, so as to better protect the magnet 46.

[0053] Furthermore, if Figure 1 As shown, the magnetic steel pushing device includes at least two magnetic steel pushing mechanisms 40, and the two magnetic steel pushing mechanisms 40 are symmetrically arranged along the radial direction of the contoured back iron 45 to form a group of magnetic steel pushing mechanisms 40. In this embodiment, the magnetic steel pushing device includes two magnetic steel pushing mechanisms 40, that is, a group of magnetic steel pushing mechanisms 40 is formed. In other embodiments, two or more groups of magnetic steel pushing mechanisms 40 can also be set, and the number of groups of magnetic steel pushing mechanisms 40 is not limited here.

[0054] like Figure 1 As shown, by arranging two magnetic steel pushing mechanisms 40 symmetrically along the radial direction of the profiling back iron 45 to form a group of magnetic steel pushing mechanisms 40, the pushing members 43 in the two magnetic steel pushing mechanisms 40 can push the magnetic steel 46 toward the center position of the profiling back iron 45 respectively and simultaneously; on the one hand, the pushing efficiency of the magnetic steel 46 can be accelerated to ensure higher working efficiency; on the other hand, the force on the profiling back iron 45 can be more balanced, thereby ensuring the stability and reliability of the profiling back iron 45 in the process of pushing the magnetic steel 46.

[0055] Furthermore, if Figure 4 and Figure 5 As shown, the pushing member 43 includes a first connecting plate 431 and a pushing plate 432; wherein the first connecting plate 431 is fixedly connected to the output shaft of the pushing magnetic cylinder 42; the pushing plate 432 is vertically connected to the first connecting plate 431, and the shape and size of the pushing plate 432 match the shape and size of the magnetic steel 46, and the pushing plate 432 is used to push the magnetic steel 46; and, the size of the pushing plate 432 needs to ensure that the pushing plate 432 will not interfere with the adjacent magnetic steel pressure plate 47 during the process of pushing the magnetic steel 46.

[0056] Specifically, Figure 5As shown, a step surface 4321 is provided on the bottom end surface of the push plate 432, and the step surface 4321 is used to abut against the magnet 46 so that the push plate 432 is pressed against the magnet 46, so as to ensure the abutment reliability between the push plate 432 and the magnet 46, and avoid the push plate 432 and the magnet 46 from separating from each other during the pushing process.

[0057] Furthermore, the material of the push plate 432 is a non-magnetic flexible material; on the one hand, it can avoid magnetic adsorption between the push plate 432 and the magnet 46, which is beneficial for the direct separation of the push plate 432 and the magnet 46 after the magnetic pushing is completed; on the other hand, it can make the push plate 432 and the magnet 46 flexibly abut against each other, so as to provide a certain buffering effect for the magnet 46 and better protect the magnet 46.

[0058] Specifically, Figure 1 and Figure 4 As shown, the magnetic steel pushing device also includes a driving component 44, the fixed end of the driving component 44 is arranged on the support frame 41, and the driving end of the driving component 44 is connected to the magnetic pushing cylinder 42 to drive the magnetic pushing cylinder 42 and the pushing member 43 to move as a whole along the Z axis or the radial direction of the contoured back iron 45.

[0059] Specifically, if Figure 4 As shown, the driving assembly 44 includes a driving member 441 and a mounting seat; wherein the fixed end of the driving member 441 is connected to the support frame 41; the mounting seat is located on the top surface of the support frame 41, and the driving end of the driving member 441 is connected to the mounting seat to drive the mounting seat to move along the Z axis, so that the magnetic cylinder 42 and the pushing member 43 can be driven to move along the Z axis as a whole through the mounting seat. In this embodiment, the driving member 441 can be specifically a linear cylinder.

[0060] Furthermore, if Figure 4 As shown, the driving assembly 44 also includes a moving plate 443, a guide column 444 and a guide sleeve 445; wherein the moving plate 443 is located below the mounting seat; one end of the guide column 444 is fixedly connected to the moving plate 443, and the other end of the guide column 444 passes through the support frame 41 to be connected to the mounting seat; the guide sleeve 445 is fixedly connected to the support frame 41, and the guide sleeve 445 is located above the moving plate 443, the guide sleeve 445 extends along the Z axis, and the guide column 444 slides along the Z axis and is inserted into the guide sleeve 445.

[0061] By providing the movable plate 443, the guide column 444 and the guide sleeve 445 which are used in conjunction with each other, it is possible to provide a guide for the movement of the mounting seat on the Z axis, thereby ensuring the guidance and stability of the movement of the mounting seat on the Z axis relative to the support frame 41. Figure 4As shown, four guide posts 444 and four guide sleeves 445 are provided respectively, a guide post 444 is inserted into a guide sleeve 445, and one end of the four guide posts 444 is respectively connected to the four corners of the movable plate 443 to ensure a better guiding effect on the mounting seat.

[0062] Furthermore, if Figure 4 As shown, the driving assembly 44 also includes a transverse moving module 446 and a second connecting plate 447; wherein the fixed end of the transverse moving module 446 is connected to the mounting seat; the fixed end of the push-magnet cylinder 42 is arranged on the second connecting plate 447, and the second connecting plate 447 is connected to the driving end of the transverse moving module 446, so that the transverse moving module 446 drives the second connecting plate 447 to move along the radial direction of the contoured back iron 45, thereby driving the push-magnet cylinder 42 and the pushing member 43 to move along the radial direction of the contoured back iron 45 as a whole. In this embodiment, the transverse moving module 446 adopts an existing motor and screw rod combination structure or other moving module structures, which are not specifically limited here.

[0063] Specifically, Figure 4 As shown, a guide block 4471 is provided on one of the mounting seat and the second connecting plate 447, and a guide rail 4424 is provided on the other. The guide rail 4424 extends in the radial direction of the contoured back iron 45. The guide block 4471 can slide on the guide rail 4424 to provide a guide for the radial movement of the second connecting plate 447 in the contoured back iron 45, thereby ensuring the second connecting plate 447 drives the magnetic cylinder 42 and the pushing member 43 to move as a whole in the contoured back iron 45. The guide block 4471 is provided on the second connecting plate 447, and the guide rail 4424 is provided on the mounting seat.

[0064] Furthermore, if Figure 4 As shown, the mounting base includes a first sub-plate 4421, a second sub-plate 4422 and a third sub-plate 4423 which are connected in sequence, so that the second sub-plate 4422 is connected between the first sub-plate 4421 and the third sub-plate 4423, the second sub-plate 4422 extends along the Z axis, the first sub-plate 4421 is located parallel to the top surface of the support frame 41 and is connected to the driving end of the driving member 441, the third sub-plate 4423 is located parallel to the top of the second connecting plate 447, and the above-mentioned guide rail 4424 is arranged on the third sub-plate 4423.

[0065] The specific working process of the magnetic steel pushing device in this embodiment is as follows:

[0066] First, before pushing the magnet 46, slide the contoured back iron 45 between the two magnet pushing mechanisms 40; then drive the mounting seat 441 to move downward along the Z axis, so as to drive the transverse moving module 446, the second connecting plate 447, the magnet pushing cylinder 42 and the pushing member 43 to move downward along the Z axis as a whole through the mounting seat, so that the pushing plate 432 is aligned with one of the magnets 46, that is, at this time, the pushing plate 432 and the magnet 46 are located on the same horizontal plane.

[0067] Then, the lateral moving module 446 drives the second connecting plate 447 to move radially along the contoured back iron 45, so as to drive the pushing magnetic cylinder 42 and the pushing member 43 to move as a whole along the radial direction of the contoured back iron 45 and close to the center position of the contoured back iron 45, so that the horizontal distance between the pushing plate 432 and the magnetic steel 46 is an appropriate distance, so as to facilitate the subsequent pushing magnetic cylinder 42 and the pushing plate 432 to push the magnetic steel 46.

[0068] Afterwards, the push rod cylinder drives the pushing piece 43 to move the pushing piece 43 in the direction close to the magnetic steel 46, so that the step surface 4321 of the bottom end surface of the pushing plate 432 abuts against the magnetic steel 46, and the pushing plate 432 presses on the magnetic steel 46; then the pushing plate 432 pushes the magnetic steel 46 along the radial direction of the profiling back iron 45 and close to the center position of the profiling back iron 45, so that the magnetic steel 46 moves in the radial direction of the profiling back iron 45 inside the profiling back iron 45, so that the magnetic steel 46 and the adjacent magnetic steel pressure plate 47 are wedge-shaped and tightly attached; then the pushing plate 432 returns to its original position.

[0069] Finally, the contoured back iron 45 is rotated stepwise by an angle so that the new magnet 46 to be pushed rotates to a position corresponding to the magnet pushing mechanism 40; and the above-mentioned action is repeated until all the magnets 46 in the contoured back iron 45 are pushed.

[0070] 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 pushing device, characterized in that: It comprises a magnetic steel pushing mechanism (40), wherein the magnetic steel pushing mechanism (40) comprises: A support frame (41) is located on one side of the profiling back iron (45), wherein a plurality of magnetic steel pressing plates (47) are installed in an annular manner and positioned in the profiling back iron (45), and a magnetic steel (46) is placed between two adjacent magnetic steel pressing plates (47), and the magnetic steel (46) is magnetically adsorbed in the profiling back iron (45); A magnetic pushing cylinder (42), the fixed end of which is used to be connected to the support frame (41), and the air supply pressure of the magnetic pushing cylinder (42) can be adjusted; A pushing piece (43), one end of which is connected to the output shaft of the pushing magnetic cylinder (42) to drive the pushing piece (43) to move radially along the contour back iron (45), so that the other end of the pushing piece (43) pushes the magnetic steel (46) toward the center of the contour back iron (45), so that the magnetic steel (46) and the magnetic steel pressure plate (47) are in wedge-shaped contact.

2. The magnetic steel pushing device according to claim 1, characterized in that: The magnetic steel pushing device comprises at least two magnetic steel pushing mechanisms (40), and the two magnetic steel pushing mechanisms (40) are symmetrically arranged along the radial direction of the contoured back iron (45).

3. The magnetic steel pushing device according to claim 1, characterized in that: The pushing member (43) comprises: A first connecting plate (431) fixedly connected to the output shaft of the magnetic pushing cylinder (42); The pushing plate (432) is vertically connected to the first connecting plate (431), the pushing plate (432) matches the magnetic steel (46), and the pushing plate (432) is used to push the magnetic steel (46).

4. The magnetic steel pushing device according to claim 3, characterized in that: The bottom end surface of the push plate (432) is provided with a step surface (4321), and the step surface (4321) is used to abut against the magnetic steel (46) so that the push plate (432) is pressed against the magnetic steel (46).

5. The magnetic steel pushing device according to claim 3, characterized in that: The material of the push plate (432) is a non-magnetic flexible material.

6. The magnetic steel pushing device according to any one of claims 1 to 5, characterized in that: The magnetic steel pushing device also includes: A driving component (44) has a fixed end disposed on the support frame (41), and a driving end of the driving component (44) is connected to the magnetic pushing cylinder (42) to drive the magnetic pushing cylinder (42) and the pushing member (43) to move along the Z axis or in the radial direction of the contoured back iron (45).

7. The magnetic steel pushing device according to claim 6, characterized in that: The drive assembly (44) comprises: A driving member (441), a fixed end of which is connected to the supporting frame (41); The mounting seat is located on the top end surface of the support frame (41), and the driving end of the driving member (441) is connected to the mounting seat to drive the mounting seat to move along the Z axis. The mounting seat is used to drive the pushing magnetic cylinder (42) and the pushing member (43) to move along the Z axis.

8. The magnetic steel pushing device according to claim 7, characterized in that: The drive assembly (44) further comprises: A movable plate (443) is located below the mounting seat; A guide column (444), one end of which is connected to the movable plate (443), and the other end of which passes through the support frame (41) and is connected to the mounting seat; The guide sleeve (445) is fixedly connected to the support frame (41), the guide sleeve (445) extends along the Z axis, and the guide column (444) is slidably arranged in the guide sleeve (445) along the Z axis.

9. The magnetic steel pushing device according to claim 7 or 8, characterized in that: The drive assembly (44) further comprises: A transverse moving module (446), a fixed end of which is connected to the mounting seat; A second connecting plate (447), the fixed end of the push-magnetic cylinder (42) is arranged on the second connecting plate (447), and the second connecting plate (447) is connected to the driving end of the lateral moving module (446) to drive the second connecting plate (447) to move radially along the contoured back iron (45).

10. The magnetic steel pushing device according to claim 9, characterized in that: One of the mounting seat and the second connecting plate (447) is provided with a guide block (4471), and the other is provided with a guide rail (4424). The guide rail (4424) extends radially along the contoured back iron (45), and the guide block (4471) can slide on the guide rail (4424).

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