Back iron positioning mechanism and rotor assembling device

Abstract

The utility model belongs to the technical field of motor rotor manufacturing, and discloses a back iron positioning mechanism and a rotor assembling device. The back iron positioning mechanism comprises a back iron tool, the back iron tool comprises a carrier and a plurality of positioning assemblies, the carrier is used for bearing back iron, the multiple positioning assemblies are arranged at intervals in the circumferential direction of the carrier, each positioning assembly comprises a positioning driving part and a holding claw, and the holding claws are connected to the output ends of the positioning driving parts and located on the peripheral side of the back iron. Each positioning driving piece can drive the corresponding holding claw to move in the direction close to the back iron so that the multiple holding claws can hold the back iron together. The back iron positioning mechanism can position the position of the back iron, ensures that the position of the back iron is accurate and has no deviation, and prevents the back iron from deviating in the process that the magnetic steel is put into the back iron, so that the magnetic steel can be accurately put into the back iron at one time, and the assembly efficiency is further ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of motor rotor manufacturing, in particular to a back iron positioning mechanism and a rotor assembly device. Background Technique

[0002] Axial magnetic field motors, also known as disc motors, have the advantages of small axial dimensions, high torque density, high power density, and high efficiency, and are widely used in fields such as electric vehicles, general industry, and household appliances.

[0003] As Figure 1 shown, from the perspective of the current structure of the disc motor rotor, the rotor 100 includes a back iron 101, a magnet 102, and a pressing plate 103. The magnets 102 and the pressing plates 103 are alternately arranged on the back iron 101 to form an annular structure. The pressing plate 103 is fixed to the back iron 101 by screws to fix the magnet 102 on the back iron 101, ensuring the accurate positioning and stability of the magnet 101.

[0004] In the prior art, when the magnet 101 is inserted into the back iron 101, the back iron 101 is placed on a carrier for support, and a plurality of assembled ring-shaped magnets 102 are placed at corresponding positions on the back iron 101 through a magnet transfer mechanism. However, the carrier in the prior art lacks a positioning structure, and the back iron 101 is prone to position deviation on the carrier, resulting in a deviation in the positions of the magnet 102 and the back iron 101, so that the magnet 101 cannot be accurately placed into the back iron 101 at one time, thus affecting the assembly efficiency.

[0005] Therefore, there is an urgent need to provide a back iron positioning mechanism and a rotor assembly device to solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide a back iron positioning mechanism, which can accurately position the back iron, so as to ensure that the magnet can be accurately placed into the back iron.

[0007] Another purpose of the utility model is to provide a rotor assembly device, which can accurately position the back iron, so as to ensure that the magnet can be accurately placed into the back iron.

[0008] To achieve this purpose, the utility model adopts the following technical solutions:

[0009] The back iron positioning mechanism includes a back iron tooling, and the back iron tooling includes:

[0010] A carrier for carrying the back iron;

[0011] A plurality of positioning components are arranged at intervals along the circumference of the vehicle. Each positioning component includes a positioning driving member and a clamping jaw. The clamping jaw is connected to the output end of the positioning driving member and is located on the outer peripheral side of the back iron. Each positioning driving member can drive the corresponding clamping jaw to move towards the back iron, so that the plurality of clamping jaws jointly clamp the back iron tightly.

[0012] As an alternative solution, the clamping jaw includes a vertical limiting portion and a horizontal convex edge. The vertical limiting portion is connected to the output end of the positioning driving member. The horizontal convex edge is perpendicularly connected to the top end of the vertical limiting portion. The vertical limiting portion abuts against the outer peripheral side of the back iron, and the horizontal convex edge can abut against the upper side of the outer edge of the back iron.

[0013] As an alternative solution, the back iron positioning mechanism further includes a workbench and a turntable. The turntable is rotatably arranged on the workbench. At least two back iron toolings are arranged on the turntable at intervals along its circumference. The turntable can drive the back iron toolings thereon to rotate intermittently, so that each back iron tooling can be switched between the back iron loading and unloading position and the magnet entering the back iron position in sequence.

[0014] As an alternative solution, the back iron positioning mechanism further includes a lifting assembly. The lifting assembly is located at the magnet entering the back iron position. The lifting assembly includes:

[0015] A positioning lifting cylinder;

[0016] A lifting positioning rod, which is connected to the output end of the positioning lifting cylinder. The positioning lifting cylinder can drive the lifting positioning rod to rise and lift the back iron, so that the top surface of the outer edge of the back iron abuts against the clamping jaw.

[0017] As an alternative solution, the lifting assembly further includes:

[0018] A first mounting bracket, which is fixed on the workbench;

[0019] A retracting lifting cylinder, which is fixed on the first mounting bracket, and the direction of the output end thereof is opposite to the direction of the output end of the positioning lifting cylinder;

[0020] A second mounting bracket, which is fixed on the output end of the retracting lifting cylinder. The positioning lifting cylinder is fixed on the second mounting bracket.

[0021] As an alternative solution, the lifting assembly includes at least two retracting lifting cylinders. At least two retracting lifting cylinders are arranged around the circumference of the positioning lifting cylinder. The output ends of at least two retracting lifting cylinders are jointly connected to the second mounting bracket.

[0022] As an alternative solution, the back iron tooling further includes a caliper assembly, and the caliper assembly includes:

[0023] A first connecting plate, which is vertically arranged on the outer peripheral side of the carrier;

[0024] A second connecting plate, which is arranged opposite to and spaced apart from the first connecting plate, and is located on the side of the first connecting plate away from the carrier;

[0025] A pushing cylinder, which is fixed on the side of the second connecting plate away from the first connecting plate, and the output end of the pushing cylinder penetrates through the second connecting plate;

[0026] A wedge block, which is connected to the output end of the pushing cylinder;

[0027] A caliper, which is rotatably arranged on the side of the first connecting plate close to the second connecting plate, and one free end of the caliper abuts against the wedge surface of the wedge block;

[0028] A spring, one end of which is hooked on the top end of the caliper, and the other end is hooked on the top end of the second connecting plate.

[0029] As an alternative solution, a positioning pin protrudes from the first connecting plate.

[0030] As an alternative solution, the back iron tooling further includes a bottom plate, and the carrier, the positioning assembly and the caliper assembly are all arranged on the bottom plate.

[0031] A rotor assembly device includes the above-mentioned back iron positioning mechanism.

[0032] Advantages of the present utility model:

[0033] The present utility model provides a back iron positioning mechanism. After the back iron is placed on the carrier, each positioning driving member simultaneously drives the corresponding clamping claws to move towards the back iron, so that multiple clamping claws jointly clamp the back iron, thereby positioning the position of the back iron, ensuring that the position of the back iron is accurate and without deviation, avoiding the back iron from shifting during the process of inserting the magnetic steel into the back iron, thereby ensuring that the magnetic steel can be accurately inserted into the back iron at one time, and further ensuring the assembly efficiency.

[0034] The present utility model further provides a rotor assembly device. By providing the above-mentioned back iron positioning mechanism, the position of the back iron can be positioned, ensuring that the position of the back iron is accurate and without deviation, avoiding the back iron from shifting during the process of inserting the magnetic steel into the back iron, thereby ensuring that the magnetic steel can be accurately inserted into the back iron at one time, and further ensuring the assembly efficiency. Description of the Drawings

[0035] Figure 1 is a schematic structural diagram of the rotor provided by the present utility model;

[0036] Figure 2 is a schematic structural diagram of the back iron tooling provided by the present utility model;

[0037] Figure 3 is Figure 2 a partial enlarged view of the position A in

[0038] Figure 4 is a schematic structural diagram of the back iron positioning mechanism provided by the present utility model;

[0039] Figure 5 is a cross-sectional view of the back iron positioning mechanism provided by the present utility model.

[0040] In the figure:

[0041] 100, rotor; 101, back iron; 102, magnet; 103, pressing plate; 104, outer annular wall;

[0042] 30, back iron positioning mechanism; 31, back iron tooling; 311, carrier; 312, positioning component; 3121, positioning driving part; 3122, clamping claw; 31221, vertical limiting part; 31222, horizontal convex edge; 313, caliper component; 3131, first connecting plate; 3132, second connecting plate; 3133, pushing cylinder; 3134, wedge block; 31341, wedge surface; 3135, caliper; 3136, spring; 314, positioning pin; 315, bottom plate; 32, workbench; 33, turntable; 34, back iron loading and unloading position; 35, magnet into back iron position; 36, lifting component; 361, positioning lifting cylinder; 362, lifting positioning rod; 363, first mounting frame; 364, avoiding lifting cylinder; 365, second mounting frame. Specific embodiments

[0043] The following further describes the present utility model in detail with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. Additionally, it should be noted that for the sake of description, only parts related to the present utility model are shown in the drawings, rather than all structures.

[0044] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0045] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0046] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0047] The axial magnetic field motor is also called a disc motor, which has the advantages of small axial dimension, high torque density, high power density and high efficiency, and is widely used in fields such as electric vehicles, general industry and household appliances. As Figure 1 shown, from the perspective of the current structure of the disc motor rotor, the rotor 100 includes a back iron 101, permanent magnets 102 and a pressing plate 103. The permanent magnets 102 and the pressing plate 103 are alternately arranged on the back iron 101 to form an annular structure. The pressing plate 103 is fixed on the back iron 101 by screws to fix the permanent magnets 102 on the back iron 101, ensuring the accurate positioning and stability of the permanent magnets 101. A convex outer annular wall 104 is formed on the outer periphery of the back iron 101 for radially limiting the permanent magnets 102 to provide support for the permanent magnets 102 in the working state of high-speed rotation of the rotor.

[0048] During assembly, it is necessary to first place a plurality of permanent magnets 102 in the corresponding positions on the back iron 101 to ensure that the plurality of permanent magnets 102 are located inside the outer annular wall 104. Then, place a pressing plate 103 between two adjacent permanent magnets 102, and fix each pressing plate 103 on the back iron 101 by screws to form as Figure 1The rotor 100 shown. In the prior art, when the magnet 101 is inserted into the back iron 101, the back iron 101 is placed on a carrier for support, and the multiple magnets 102 assembled into a ring are placed into the corresponding positions of the back iron 101 through the magnet transfer mechanism. However, the carrier in the prior art lacks a positioning structure, and the back iron 101 is very likely to be offset on the carrier, and the position that the magnet transfer mechanism drives the magnet 102 to reach each time is fixed, so it will cause the position of the magnet 102 and the back iron 101 to deviate, so that the magnet 101 cannot be accurately placed in the accurate position of the back iron 101 at one time, thereby affecting the assembly efficiency.

[0049] In order to solve the above problems, Figure 2 As shown, this embodiment provides a back-iron positioning mechanism 30, including a back-iron tooling 31, the back-iron tooling 31 includes a carrier 311 and a plurality of positioning components 312, the carrier 311 is used to carry the back-iron 101, the plurality of positioning components 312 are arranged at intervals along the circumference of the carrier 311, each positioning component 312 includes a positioning drive 3121 and a claw 3122, the claw 3122 is connected to the output end of the positioning drive 3121 and is located on the outer peripheral side of the back-iron 101, each positioning drive 3121 can drive the corresponding claw 3122 to move in a direction close to the back-iron 101, so that the plurality of claws 3122 can jointly clamp the back-iron 101.

[0050] The back-iron positioning mechanism 30 provided in this embodiment is such that after the back-iron 101 is placed on the carrier 311, each positioning drive member 3121 simultaneously drives the corresponding claw 3122 to move towards the direction close to the back-iron 101, so that the multiple claws 3122 jointly clamp the back-iron 101, thereby positioning the back-iron 101, ensuring that the position of the back-iron 101 is accurate and without deviation, avoiding the back-iron 101 from shifting during the process of the magnet 102 entering the back-iron 101, thereby ensuring that the magnet 102 can be placed in the accurate position of the back-iron 101 at one time, thereby ensuring assembly efficiency.

[0051] It should be noted that the back-iron positioning mechanism 30 can be used in conjunction with a magnetic steel transfer mechanism, which is located beside the back-iron positioning mechanism 30 and is used to transfer multiple magnetic steels 102 from the previous workstation to the back-iron positioning mechanism 30, and to keep the multiple magnetic steels 102 aligned with the back-iron on the back-iron positioning mechanism 30, and to accurately place the multiple magnetic steels 102 on the back-iron 101 of the carrier 311. Among them, the magnetic steel transfer mechanism can be a magnetic suction cup fixed at the end of a robotic arm, or a magnetic suction cup fixed at the output end of a two-axis moving module. As long as the lifting and lowering movement of the magnetic suction cup and the horizontal movement between different workstations can be realized, the magnetic suction cup can magnetically absorb multiple magnetic steels 102 assembled into a ring at one time. The specific structure of the magnetic steel transfer mechanism is relatively common in the prior art, and does not belong to the improvement point of the present application, so it will not be repeated here.

[0052] Exemplarily, in an alternative embodiment, referring to Figure 2 , the positioning components 312 may be provided in four numbers, and the four positioning components 312 are evenly arranged at intervals along the circumferential direction of the vehicle 311. The four positioning driving members 3121 respectively drive the corresponding grippers 3122 to move towards the direction close to the back iron 101, so that the four grippers 3122 jointly hold the back iron 101 tightly to reliably position the position of the back iron 101. In other embodiments, the number of the positioning components 312 is not limited to the above number, and may also be set to other numbers according to actual needs, and no specific limitation is made here.

[0053] Among them, the positioning driving member 3121 may be selected as a cylinder. The cylinder has a simple structure, requires little space, is easy to install and maintain, has a smooth movement, a fast response speed, and can achieve a smooth pushing effect.

[0054] As Figure 3 shown, the gripper 3122 includes a vertical limiting portion 31221 and a horizontal flange 31222. The vertical limiting portion 31221 is connected to the output end of the positioning driving member 3121. The horizontal flange 31222 is vertically connected to the top end of the vertical limiting portion 31221 and protrudes towards the direction of the back iron 101. The vertical limiting portion 31221 abuts against the outer peripheral side of the back iron 101, and the horizontal flange 31222 can abut against the upper side of the outer edge of the back iron 101. That is to say, the vertical limiting portion 31221 abuts against the circumferential outer side wall of the outer annular wall 104. The vertical limiting portions 31221 of the plurality of grippers 3122 jointly abut tightly, which can limit the radial movement and circumferential rotation of the back iron 101. The horizontal flange 31222 can abut against the upper side surface of the outer annular wall 104. The horizontal flanges 31222 of the plurality of grippers 3122 jointly act to limit the axial movement of the back iron 101. Therefore, by providing the above-mentioned gripper 3122, the position of the back iron 101 can be positioned, ensuring that the position of the back iron 101 is accurate and without deviation, avoiding the deviation of the back iron 101 during the process of the magnet 102 entering the back iron 101, so as to ensure that the magnet 102 can be accurately placed at the accurate position of the back iron 101 at one time, thereby ensuring the assembly efficiency.

[0055] In an alternative embodiment, as Figure 4As shown in the figure, the back iron positioning mechanism 30 further includes a workbench 32 and a turntable 33. The turntable 33 is rotatably arranged on the workbench 32. At least two back iron toolings 31 are arranged on the turntable 33 at intervals along its circumferential direction. The turntable 33 can drive the back iron toolings 31 thereon to rotate intermittently, so that each back iron tooling 31 can be switched between the back iron loading and unloading position 34 and the magnet steel into back iron position 35 in turn. In this embodiment, two back iron toolings 31 are arranged on the turntable 33, and the two back iron toolings 31 are symmetrically arranged. When one of them is at the back iron loading and unloading position 34, the other is at the magnet steel into back iron position 35. The magnet steel into back iron position 35 is located beside the magnet steel transfer mechanism. The magnet steel transfer mechanism puts a plurality of magnet steels 102 onto the back iron 101 carried by the back iron tooling 31 located at the magnet steel into back iron position 35. Then the turntable 33 rotates 180 degrees, so that the back iron tooling 31 originally located at the back iron loading and unloading position 34 rotates to the magnet steel into back iron position 35, and the magnet steel transfer mechanism continues to put a plurality of magnet steels 102 into the back iron 101 at this position; while the back iron tooling 31 originally at the magnet steel into back iron position 35 rotates to the back iron loading and unloading position 34 to take down the back iron 101 filled with magnet steels 102, and an empty back iron 101 is placed on the carrier 311 again. In this way, the cycle is repeated, realizing the rapid loading and unloading of the back iron 101 and improving the production efficiency.

[0056] In other embodiments, three, four or more back iron toolings 31 can also be arranged on the turntable 33, which can be flexibly set according to actual needs and will not be specifically limited here.

[0057] Among them, the turntable 33 can be driven to rotate by a rotation driving part. The rotation driving part can be selected as a motor or a dividing head, etc. Its driving method belongs to the prior art and will not be elaborated here.

[0058] It can be understood that there is a large magnetic attraction force between the back iron 101 and the magnet steel 102, and the clamping jaw 3122 realizes horizontal movement through the drive of the positioning driving part 3121. The horizontal movement of the clamping jaw 3122 necessarily requires a clearance fit between the bottom surface of its horizontal convex edge 31222 and the top surface of the outer annular wall 104. The existence of this clearance will cause the risk that the back iron 101 is magnetically attracted and lifted by the magnet steel 102 during the process of the magnet steel 102 entering the back iron 101, resulting in a slight position change of the back iron 101 during the upward movement, which is not conducive to the accurate entry of the magnet steel 102 into the back iron 101.

[0059] To solve the above problems, in an optional embodiment, as Figure 4 and Figure 5As shown, the back iron positioning mechanism 30 further includes a jacking assembly 36. The jacking assembly 36 is located at the magnet inserting into back iron position 35. The jacking assembly 36 includes a positioning lifting cylinder 361 and a jacking positioning rod 362. The output end of the positioning lifting cylinder 361 faces upward, and the jacking positioning rod 362 is connected to the output end of the positioning lifting cylinder 361. The positioning lifting cylinder 361 can drive the jacking positioning rod 362 to rise and jack the back iron 101, so that the top surface of the outer edge of the back iron 101 abuts against the gripper 3122. When one of the back iron toolings 31 rotates to the magnet inserting into back iron position 35, the output end of the positioning lifting cylinder 361 extends, driving the jacking positioning rod 362 to pass through the turntable 33 and then jack the back iron 101, so that the top surface of the outer annular wall 104 of the back iron 101 abuts tightly against the bottom surface of the horizontal convex edge 31222 of the gripper 3122. Then the magnet transfer mechanism puts the magnet 102 into the back iron 101, avoiding the risk of the back iron 101 moving upward during the process of the magnet 102 inserting into the back iron 101.

[0060] Further, as Figure 5 shown, the jacking assembly 36 further includes a first mounting frame 363, a retracting lifting cylinder 364 and a second mounting frame 365. There is a notch on the workbench 32 for the jacking assembly 36 to pass through. The first mounting frame 363 is fixed on the workbench 32 and covers the notch. The jacking positioning rod 362 passes through the first mounting frame 363. The retracting lifting cylinder 364 is fixed on the lower side of the first mounting frame 363, and the orientation of its output end is opposite to that of the output end of the positioning lifting cylinder 361. The second mounting frame 365 is fixed on the output end of the retracting lifting cylinder 364, and the positioning lifting cylinder 361 is fixed on the second mounting frame 365.

[0061] When it is necessary to jack the back iron 101, the output end of the retracting lifting cylinder 364 retracts, driving the second mounting frame 365, the positioning lifting cylinder 361 and the jacking positioning rod 362 thereon to move upward. At the same time, the output end of the positioning lifting cylinder 361 extends, driving the jacking positioning rod 362 to pass through the turntable 33 and then jack the back iron 101. When the turntable 33 needs to switch positions, the output end of the positioning lifting cylinder 361 retracts, driving the jacking positioning rod 362 to move downward. At the same time, the output end of the retracting lifting cylinder 364 extends downward, driving the second mounting frame 365, the positioning lifting cylinder 361 and the jacking positioning rod 362 thereon to move further downward. These two displacements make the jacking positioning rod 362 move below the turntable 33, avoiding interference with the jacking positioning rod 362 when the turntable 33 switches positions.

[0062] Specifically, as Figure 5As shown, the jacking assembly 36 includes two avoidance lifting cylinders 364. The two avoidance lifting cylinders 364 are arranged around the circumferential side of the positioning lifting cylinder 361, that is, symmetrically arranged relative to the positioning lifting cylinder 361. The output ends of the two avoidance lifting cylinders 364 are jointly connected to the second mounting bracket 365. With this setting, it can ensure that the second mounting bracket 365, the positioning lifting cylinder 361, and the jacking positioning rod 362 thereon are evenly stressed and stable during the lifting process. In other embodiments, the number of avoidance lifting cylinders 364 can also be set to three, four or more groups, which can be flexibly set according to actual needs and will not be specifically limited here.

[0063] In an alternative embodiment, as Figure 2 and Figure 5 shown, the back iron tooling 31 further includes a caliper assembly 313. The magnetic steel transfer mechanism is provided with corresponding caliper holes. When the magnetic steel transfer mechanism is docked with the back iron tooling 31 to place the magnetic steel 102, the caliper assembly 313 is clamped in the caliper 3135 hole to prevent the relative position of the magnetic steel transfer mechanism and the back iron tooling 31 from moving due to the instability of the turntable 33.

[0064] Specifically, as Figure 2 and Figure 5 shown, the caliper assembly 313 includes a first connecting plate 3131, a second connecting plate 3132, a pushing cylinder 3133, a wedge block 3134, a caliper 3135 and a spring 3136. The first connecting plate 3131 is erected on the outer peripheral side of the carrier 311. The second connecting plate 3132 is arranged at a relative interval with the first connecting plate 3131 and is located on the side of the first connecting plate 3131 away from the carrier 311. The pushing cylinder 3133 is fixed on the side of the second connecting plate 3132 away from the first connecting plate 3131. The output end of the pushing cylinder 3133 penetrates through the second connecting plate 3132. The wedge block 3134 is connected to the output end of the pushing cylinder 3133. The caliper 3135 is rotatably arranged on the side of the first connecting plate 3131 close to the second connecting plate 3132 through a rotating shaft. One free end of the caliper 3135 abuts against the wedge surface 31341 of the wedge block 3134, and the other free end is clamped in cooperation with the caliper 3135 hole. One end of the spring 3136 is hooked on the top end of the caliper 3135, and the other end is hooked on the top end of the second connecting plate 3132.

[0065] In the natural state, the caliper 3135 is held in the unlocked position by the pulling of the spring 3136 (as Figure 2 and Figure 5In the state shown in [Figure], when the magnet transfer mechanism docks with the carrier 311 to place the magnet 102, the output end of the pushing cylinder 3133 extends, driving the wedge block 3134 to move towards the carrier 311. During the sliding process of the wedge block 3134, one free end of the caliper 3135 abuts against the wedge surface 31341 of the wedge block 3134 and slides relative to the wedge surface 31341, causing the caliper 3135 to gradually rotate towards the carrier 311 against the pulling force of the spring 3136 and finally clamping tightly in the caliper hole, preventing the relative position of the magnet transfer mechanism and the back iron tooling 31 from moving. After the operation of inserting the magnet 102 into the back iron 101 is completed, the output end of the pushing cylinder 3133 retracts. Under the pulling force of the spring 3136, it drives the caliper 3135 to reset and complete unlocking, and then the magnet transfer mechanism can be removed.

[0066] In this embodiment, as Figure 2 shown, two sets of caliper assemblies 313 are provided, and the two sets of caliper assemblies 313 are symmetrically arranged with respect to the carrier 311. This setting can prevent the relative position of the magnet transfer mechanism and the back iron tooling 31 from moving, which is stable and reliable.

[0067] Furthermore, a positioning pin 314 protrudes from the first connecting plate 3131, and a positioning pin hole is provided at the corresponding position on the magnet transfer mechanism. The positioning pin 314 can be inserted into the positioning pin hole to ensure that the magnet 102 can be accurately aligned with the back iron 101.

[0068] As Figure 2 shown, the back iron tooling 31 further includes a bottom plate 315. The bottom plate 315 is fixed on the turntable 33, and the carrier 311, the positioning assembly 312, and the caliper assembly 313 are all arranged on the bottom plate 315. This setting makes the overall structure of the back iron tooling 31 compact and has a high degree of integration, facilitating the separate transfer and handling of the back iron tooling 31.

[0069] This embodiment also provides a rotor assembly device, including the above-mentioned back iron positioning mechanism 30 and a magnet transfer mechanism. The magnet transfer mechanism is located beside the back iron positioning mechanism 30 and is used to transfer multiple magnets 102 from the previous station to the back iron positioning mechanism 30, keep the multiple magnets 102 in a aligned state with the back iron on the back iron positioning mechanism 30, and place the multiple magnets 102 on the back iron 101 of the carrier 311. Among them, the magnet transfer mechanism can be a magnetic chuck fixed at the end of a robotic arm, or a magnetic chuck fixed at the output end of a two-axis moving module, as long as it can realize the lifting and moving of the magnetic chuck and the horizontal movement between different stations. The magnetic chuck can magnetically adsorb and assemble multiple magnets 102 into a ring at one time. The specific structure of the magnet transfer mechanism is relatively common in the prior art and will not be elaborated here.

[0070] The rotor assembly device provided in this embodiment can position the back iron 101 by setting the above-mentioned back iron positioning mechanism 30, ensuring the accurate and deviation-free position of the back iron 101, avoiding the deviation of the back iron 101 during the process of the magnet 102 entering the back iron 101, so as to ensure that the magnet 102 can be accurately placed into the back iron 101 at one time, thereby ensuring the assembly efficiency.

[0071] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Back iron positioning mechanism, characterized in that: It comprises a back iron tool (31), and the back iron tool (31) comprises: A carrier (311) for carrying the back iron (101); A plurality of positioning components (312) are arranged at intervals along the circumference of the carrier (311), each of the positioning components (312) comprises a positioning drive (3121) and a clamping claw (3122), the clamping claw (3122) is connected to the output end of the positioning drive (3121) and is located on the outer peripheral side of the back iron (101), and each of the positioning drive (3121) can drive the corresponding clamping claw (3122) to move in a direction close to the back iron (101), so that the plurality of clamping claws (3122) can clamp the back iron (101) together.

2. The back iron positioning mechanism according to claim 1, characterized in that: The claw (3122) includes a vertical limiting portion (31221) and a horizontal convex edge (31222), wherein the vertical limiting portion (31221) is connected to the output end of the positioning drive member (3121), and the horizontal convex edge (31222) is vertically connected to the top of the vertical limiting portion (31221), the vertical limiting portion (31221) abuts against the outer peripheral side of the back iron (101), and the horizontal convex edge (31222) can abut against the upper side of the outer edge of the back iron (101).

3. The back iron positioning mechanism according to claim 1, characterized in that: The back-iron positioning mechanism further comprises a workbench (32) and a turntable (33), wherein the turntable (33) is rotatably arranged on the workbench (32), and the turntable (33) is provided with at least two back-iron fixtures (31) arranged at intervals along its circumference, and the turntable (33) can drive the back-iron fixtures (31) thereon to rotate intermittently, so that each back-iron fixture (31) is switched in turn between the back-iron upper and lower material positions (34) and the magnetic steel back-iron entry position (35).

4. The back iron positioning mechanism according to claim 3, characterized in that: The back iron positioning mechanism further comprises a lifting component (36), the lifting component (36) being located at the magnetic steel back iron entry position (35), and the lifting component (36) comprising: Positioning lifting cylinder (361); A lifting and positioning rod (362) is connected to the output end of the positioning and lifting cylinder (361), and the positioning and lifting cylinder (361) can drive the lifting and positioning rod (362) to rise and lift the back iron (101) so that the outer edge top surface of the back iron (101) is against the claw (3122).

5. The back iron positioning mechanism according to claim 4, characterized in that: The lifting assembly (36) further comprises: A first mounting frame (363) is fixed on the workbench (32); An avoidance lifting cylinder (364) is fixed on the first mounting frame (363), and the direction of its output end is opposite to the direction of the output end of the positioning lifting cylinder (361); The second mounting frame (365) is fixed to the output end of the avoidance lifting cylinder (364), and the positioning lifting cylinder (361) is fixed to the second mounting frame (365).

6. The back iron positioning mechanism according to claim 5, characterized in that: The lifting assembly (36) comprises at least two avoidance lifting cylinders (364), and at least two avoidance lifting cylinders (364) are arranged around the circumference of the positioning lifting cylinder (361), and the output ends of at least two avoidance lifting cylinders (364) are commonly connected to the second mounting frame (365).

7. The back iron positioning mechanism according to any one of claims 1 to 6, characterized in that: The back iron tool (31) further comprises a caliper assembly (313), wherein the caliper assembly (313) comprises: A first connecting plate (3131) is vertically arranged on the outer peripheral side of the carrier (311); A second connecting plate (3132) is arranged opposite to the first connecting plate (3131) and spaced apart from the first connecting plate (3131), and is located on a side of the first connecting plate (3131) away from the carrier (311); A push cylinder (3133) is fixed to a side of the second connecting plate (3132) away from the first connecting plate (3131), and an output end of the push cylinder (3133) passes through the second connecting plate (3132); A wedge block (3134) connected to the output end of the push cylinder (3133); A caliper (3135) is rotatably disposed on a side of the first connecting plate (3131) close to the second connecting plate (3132), and a free end of the caliper (3135) is in contact with a wedge surface (31341) of the wedge block (3134); A spring (3136) has one end hooked on the top of the caliper (3135) and the other end hooked on the top of the second connecting plate (3132).

8. The back iron positioning mechanism according to claim 7, characterized in that: A positioning pin (314) is protrudingly provided on the first connecting plate (3131).

9. The back iron positioning mechanism according to claim 7, characterized in that: The back-iron tooling (31) further comprises a bottom plate (315), and the carrier (311), the positioning assembly (312) and the caliper (3135) assembly (313) are all arranged on the bottom plate (315).

10. A rotor assembly device, characterized in that: It comprises a back iron positioning mechanism as described in any one of claims 1-9.

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