An electric steel sheet winding device for a new energy vehicle motor core

Abstract

The utility model relates to motor manufacturing equipment technical field discloses a new energy automobile motor iron core is with electrical steel sheet winding device, including fixed frame, carousel and drive its rotation's second motor, the carousel is inwards from the outside nested setting several diameters decrement's winding reel, the innermost winding reel is connected with inner holder, is equipped with the drive rod that two -way cylinder and by its drive are established on the inner holder, drive rod is along the axial penetration and selectively locks several winding reels, carousel side is equipped with first motor and two -way screw rod, is equipped with linkage transmission mechanism between two -way screw rod and inner holder, rotates through first motor drive screw rod, utilizes linkage mechanism to push the inner holder and the selected winding reel relative to the unselected level axial extension, the utility model realized the automation quick regulation of winding mould diameter, solved the problem that the production efficiency was low and the commonality was poor because of the manual replacement mould of prior art, significantly promoted the equipment flexible production capacity.

Description

Technical Field

[0001] This utility model relates to the field of motor manufacturing equipment technology, and in particular to a winding device for electrical steel sheets for the core of a new energy vehicle motor. Background Technology

[0002] As a core component, the drive motor of new energy vehicles directly affects the vehicle's power performance and range. The motor core, as a crucial carrier of the magnetic circuit, is typically made of wound electrical steel sheets, and its winding quality and dimensional accuracy are paramount. In actual production, different models or power motors often require cores of different diameters, necessitating that the winding equipment possess corresponding adaptability.

[0003] However, existing electrical steel sheet winding devices typically use winding dies or drums of fixed diameter. When the production line needs to switch to producing iron cores of different diameters, operators often have to stop the equipment, manually disassemble the original winding die using tools, find and install the corresponding new die, and then perform repeated adjustments and alignment. This traditional die-changing method is not only cumbersome and labor-intensive, but also results in excessive downtime, severely restricting the continuous operation capability and production efficiency of the production line, making it difficult to meet the growing demand for diversified and flexible production of new energy vehicle motors.

[0004] Therefore, this utility model proposes an electrical steel sheet winding device for the iron core of a new energy vehicle motor to overcome the shortcomings of the prior art. Utility Model Content

[0005] In view of the problems in the existing technology, motor core winding equipment generally uses fixed specification molds, which requires manual shutdown to change the mold when facing the production needs of iron cores of different diameters. The mold changing process is cumbersome and time-consuming, resulting in low production efficiency and poor adaptability of the equipment to multiple specifications of products. The present invention aims to provide a new energy vehicle motor iron core iron core electrical steel sheet winding device with improved structure that can effectively solve the above problems.

[0006] This utility model provides a winding device for electrical steel sheets for the core of a new energy vehicle motor, comprising: a fixed frame, a turntable rotatably connected to the front side of the fixed frame, and a second motor for driving the turntable to rotate; the turntable has a plurality of winding discs with decreasing diameters nested inside from the outside to the inside.

[0007] The innermost winding reel is connected to an inner frame, which is equipped with a bidirectional cylinder and a drive rod driven by it. The drive rod passes through several winding reels axially. The turntable is equipped with a first motor and a bidirectional lead screw on its side. A linkage transmission mechanism that converts rotational motion into axial thrust is provided between the bidirectional lead screw and the inner frame.

[0008] Furthermore, the first motor drives the bidirectional lead screw to rotate, and uses the linkage transmission mechanism to push the inner frame to move. In conjunction with the bidirectional cylinder driving the drive rod to perform layer locking selection, the selected winding reel can move axially and telescopically relative to the unselected winding reel, thereby realizing automatic adjustment of the winding diameter.

[0009] Preferably, an outer frame is fixed to one side of the turntable, and a drive frame is fixed to one side of the outer frame. The bidirectional lead screw is rotatably connected to the inside of the drive frame. The first motor is fixed to the top of the drive frame and connected to one end of the bidirectional lead screw. The specific structure of the linkage transmission mechanism includes two second rotating seats threaded to the outer wall of the bidirectional lead screw, two first rotating seats fixed to one side of the inner frame, and a linkage plate rotatably connected between the first rotating seats and the second rotating seats. By changing the distance between the two second rotating seats, the linkage plate is used to push the inner frame forward and backward.

[0010] Preferably, a second connecting groove is provided on both sides of the inner wall of the winding reel, and a first connecting groove is provided on the turntable at the position corresponding to the second connecting groove. A linkage rod is slidably arranged inside the first connecting groove, and a spring is installed between the linkage rod and the inner wall of the first connecting groove. The cooperation between the first connecting groove and the second connecting groove provides installation and movement space for the internal locking component.

[0011] Preferably, the drive rod passes through several second connecting slots and abuts against one end of the linkage rod. When the bidirectional cylinder drives the drive rod to slide, the linkage rod disengages from the second connecting slots in the corresponding several winding reels. The mechanical locking and releasing of the winding reels at different levels is achieved by using the insertion and extraction action of the drive rod in the second connecting slots.

[0012] Preferably, the spring always applies elastic force to the linkage rod, so that the linkage rod and the drive rod remain in contact, and the drive rod enters the second connecting groove in the corresponding plurality of winding reels when it extends or retracts. This structure ensures that when the drive rod moves to switch levels, the linkage rod can automatically follow and fill the gap or avoid it, ensuring that the mechanism operates smoothly without jamming.

[0013] Preferably, a guide structure is provided between adjacent winding reels. The guide structure includes a limiting groove formed on the outer wall of the winding reel and a limiting protrusion disposed on the inner wall of the winding reel and slidably engaged with the limiting groove. The limiting protrusion slides in the limiting groove to play a guiding role, while restricting the relative rotation between adjacent winding reels and ensuring effective torque transmission.

[0014] Preferably, the drive rod passes through the second connecting slot of the multiple turntables, so that the corresponding number of winding discs can extend to the front side of the fixed frame at the same time, thereby combining winding molds with different outer diameters according to actual needs.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, by setting up multiple layers of winding discs with decreasing diameters and nested distribution, and using a drive rod driven by a bidirectional cylinder for layer selection, and by using a motor screw assembly to drive the inner frame to move axially through a linkage mechanism, the problem of manual machine stoppage for mold replacement for iron cores of different diameters in the prior art is solved, which is cumbersome and has low production efficiency. The technical effect is to achieve rapid and automated switching of winding diameter without disassembling the equipment, significantly improve production efficiency, and meet the flexible production needs of iron cores of various specifications.

[0017] 2. In this utility model, by setting a linkage rod with a spring in the connecting groove of the turntable and the winding reel, the restoring force of the spring is used to keep the linkage rod in contact with the end of the drive rod. This solves the problem that the drive rod is prone to jamming due to gaps or alignment deviations during the reciprocating motion of layer switching, as well as the problem of unstable locking state. It achieves the technical effect that the drive rod can adaptively fill the gap or be pushed open during the extension and retraction process, ensure smooth and reliable layer selection action, and effectively eliminate vibration caused by mechanical gaps. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of an electrical steel sheet winding device for a new energy vehicle motor core proposed in this utility model.

[0019] Figure 2 This is a schematic diagram of the outer frame structure of an electrical steel sheet winding device for a new energy vehicle motor core proposed in this utility model.

[0020] Figure 3 This is a schematic diagram of the turntable structure of a winding device for electrical steel sheets used in the core of a new energy vehicle motor, as proposed in this utility model.

[0021] Figure 4 for Figure 3 A magnified schematic diagram of the partial three-dimensional structure of A.

[0022] Legend:

[0023] 1. Fixed frame; 2. Turntable; 201. Winding reel; 202. First connecting groove; 203. Second connecting groove; 204. Spring; 205. Linkage rod; 206. Drive rod; 3. Two-way cylinder; 301. Inner frame; 302. First rotating seat; 303. Linkage plate; 304. Second rotating seat; 305. Outer frame; 306. Drive frame; 307. Two-way lead screw; 308. First motor; 4. Second motor; 5. Limiting groove; 501. Limiting protrusion. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] Example: Please refer to Figures 1 to 4 This utility model provides a winding device for electrical steel sheets for the core of a new energy vehicle motor, which aims to solve the problems of low production efficiency and poor equipment versatility caused by the need for manual replacement of winding molds of different specifications in the prior art.

[0026] like Figure 1 and Figure 2 As shown, the electrical steel sheet winding device for the core of a new energy vehicle motor includes a fixed frame 1 and a turntable 2 rotatably connected to the front side of the fixed frame 1. The fixed frame 1 serves as the mounting base and support platform for the entire device. The turntable 2 is used to support the winding mold assembly for rotational operation. A second motor 4 is fixedly installed on the rear side of the fixed frame 1 by bolts. The output shaft of the second motor 4 passes through the fixed frame 1 and is keyed to the rear end face of the turntable 2. The second motor 4 is used to provide the main winding power and drive the turntable 2 and the components installed inside the turntable 2 to rotate synchronously.

[0027] like Figure 1 , Figure 3 and Figure 4As shown, inside the turntable 2, several winding discs 201 with decreasing diameters are nested sequentially from the outside to the inside. The winding discs 201 slide together to form a variable diameter winding mold body. An inner frame 301 is welded and fixed to the end face of the innermost winding disc 201. The inner frame 301 is used to connect the drive source and the mold assembly. A two-way cylinder 3 is installed inside the inner frame 301. Both extension ends of the two-way cylinder 3 are flange-connected and fixed to a drive rod 206. The drive rod 206 extends axially and passes through several winding discs 201. It is used to selectively engage with winding discs 201 of different layers through axial displacement, thereby determining the diameter of the mold participating in the extension winding operation.

[0028] An outer frame 305 is welded and fixed to one side of the turntable 2. The outer frame 305 supports the adjustment drive mechanism. A drive frame 306 is bolted to the side of the outer frame 305. A first motor 308 is fixed to the flange at the top of the drive frame 306. The first motor 308 provides power for the mold extension and retraction adjustment. A double-acting lead screw 307 is rotatably connected to the drive frame 306 through bearings. The output shaft of the first motor 308 is fixedly connected to one end of the double-acting lead screw 307 through a coupling. A linkage transmission is provided between the double-acting lead screw 307 and the inner frame 301 to convert the rotational motion into axial thrust. The linkage transmission mechanism includes two symmetrically distributed second rotating seats 304 threaded to the outer wall of the bidirectional lead screw 307, two first rotating seats 302 fixed to one side of the inner frame 301, and a linkage plate 303 rotatably connected between the first rotating seats 302 and the second rotating seats 304. The first motor 308 drives the bidirectional lead screw 307 to rotate, forcing the two second rotating seats 304 to move relative to each other, and then pushes the inner frame 301 and the winding reel 201 locked by the drive rod 206 to move back and forth along the axial direction through the linkage plate 303, so as to realize the extension and retraction of the winding station.

[0029] To address the aforementioned technical problems of low efficiency and poor equipment adaptability when manually changing molds, the electrical steel sheet winding device for the core of new energy vehicle motors also includes a precision hierarchical locking mechanism. Furthermore, this locking mechanism forms a specific linkage and logical selection relationship with the aforementioned turntable 2, winding disc 201, and drive rod 206.

[0030] Please refer to the following carefully. Figure 3 and Figure 4 In this hierarchical locking mechanism, each winding reel 201 has a second connecting groove 203 with a rectangular cross-section symmetrically opened on both sides of its inner wall. The second connecting groove 203 extends through the axial length of the winding reel 201, providing an insertion channel and locking space for the drive rod 206. The inner wall of the turntable 2 has a first connecting groove 202 at the position corresponding to the second connecting groove 203. The first connecting groove 202 is arranged radially and its internal space can accommodate the reciprocating motion of the locking component.

[0031] A linkage rod 205 is slidably installed inside the first connecting groove 202. The linkage rod 205 is made of high-strength alloy steel. One end of the linkage rod 205 is designed to be a flat or arc-shaped structure that matches the end of the drive rod 206. A compression spring 204 is installed between the linkage rod 205 and the inner wall of the first connecting groove 202. One end of the spring 204 abuts against the bottom of the first connecting groove 202, and the other end abuts against the end of the linkage rod 205. The spring 204 is always in a compressed and energy-storing state, continuously applying a spring force to the linkage rod 205 pointing towards the center of the turntable 2, forcing the linkage rod 205 to maintain an inward movement tendency.

[0032] Meanwhile, the drive rod 206 moves axially and telescopically under the drive of the bidirectional cylinder 3. When the drive rod 206 is not inserted into the second connecting groove 203 of the specific level winding reel 201, the level winding reel 201 is in a free state and does not move axially with the inner frame 301. When the drive rod 206 is inserted into the second connecting groove 203 of the specific level winding reel 201, the side wall of the drive rod 206 fits tightly with the inner wall of the second connecting groove 203 to form a rigid connection, so that the level winding reel 201 is mechanically locked on the drive rod 206.

[0033] During this process, the drive rod 206 passes through several second connecting slots 203 and always maintains abutment with one end of the linkage rod 205. When the bidirectional cylinder 3 drives the drive rod 206 to slide and adjust its position, if the drive rod 206 is pulled out from the second connecting slot 203 of a certain winding reel 201, the spring 204 releases its elastic force to push the linkage rod 205 to follow the drive rod 206. If the drive rod 206 is inserted again, it overcomes the resistance of the spring 204 and pushes the linkage rod 205 away. This adaptive abutment structure formed by the spring 204 and the linkage rod 205 ensures that the drive rod 206 is always subjected to a stable guiding force during frequent and rapid extension and retraction switching, preventing the mechanism from jamming or misalignment. It also eliminates gaps and reduces vibration and wear.

[0034] To maintain the relative position between the inner and outer winding reels 201, a guide limiting structure is provided between adjacent winding reels 201. Specifically, it includes a limiting groove 5 opened on the outer wall of the inner winding reel 201 and extending axially, and a limiting protrusion 501 integrally formed or fixedly set on the inner wall of the outer winding reel 201. The cross-sectional shape of the limiting protrusion 501 matches the limiting groove 5 and slides inside the limiting groove 5. This keyway-type sliding guide fit allows the inner winding reel 201 to move axially relative to the outer winding reel 201, while limiting their relative circumferential rotation. This ensures that when the second motor 4 drives the turntable 2 to rotate at high speed for winding operations, all extended winding reels 201 can maintain synchronous rotation, transmit torque stably and reliably, and effectively prevent the winding core from being deformed or scrapped due to interlayer slippage.

[0035] Based on the above embodiments, the present invention also includes the following preferred technical solutions:

[0036] As a preferred embodiment, in order to optimize the structural layout of the drive adjustment component and improve the transmission accuracy, the drive frame 306 adopts a high-rigidity frame structure, and its top is welded with a flange seat for mounting the first motor 308. The two ends of the bidirectional lead screw 307 are rotatably supported in the crossbeams at the upper and lower ends of the drive frame 306 through deep groove ball bearings. The first motor 308 directly drives the bidirectional lead screw 307 through an elastic coupling, reducing intermediate transmission links and effectively avoiding the influence of return backlash on the mold extension position accuracy.

[0037] As another preferred embodiment, in order to smoothly and efficiently convert the rotational motion into a large-thrust axial motion, the linkage plate 303 is set into two sets, located on both sides of the inner frame 301 respectively. Each set of linkage plates 303 has a rotating shaft hole at both ends, and forms a hinged engagement with the first rotating seat 302 and the second rotating seat 304 through a pin. The two sections of the thread on the bidirectional lead screw 307 with opposite threads are threadedly connected to the two second rotating seats 304 respectively. When the bidirectional lead screw 307 rotates, the two second rotating seats 304 move synchronously towards or away from each other. Through the linkage plate 303 forming a linkage force amplification mechanism, the first rotating seat 302 and the inner frame 301 can be smoothly and powerfully pushed to move axially, ensuring smooth mold expansion and contraction even under heavy load conditions.

[0038] As another preferred embodiment, in order to enhance the overall rigidity and torsional resistance of the multi-layer winding reel 201 after assembly, the limiting groove 5 is opened along the entire axial length of the winding reel 201, and the cross-section is dovetail-shaped or T-shaped. The limiting protrusion 501 is designed accordingly as a dovetail block or T-shaped block to cooperate with it. This cross-section design with self-locking function can not only limit relative rotation, but also limit the radial runout of the inner winding reel 201 to a certain extent, so that the extended multi-layer mold is more stable when it is rotated and wound at high speed, and the dimensional accuracy of the wound iron core is higher.

[0039] As another preferred embodiment, in order to ensure that the spring 204 maintains a stable elastic restoring force during long-term use, the spring 204 is made of fatigue-resistant steel wire, and the inner wall of the first connecting groove 202 is provided with guide posts or guide holes to prevent the spring 204 from buckling and deforming. The contact end face of the linkage rod 205 and the drive rod 206 is hardened by quenching to improve its wear resistance and prevent end face wear caused by frequent friction from affecting the alignment accuracy.

[0040] Working principle: When it is necessary to perform winding operations according to the diameter of the iron core of new energy vehicle motors of different specifications, the control system first starts the bidirectional cylinder 3. The bidirectional cylinder 3 drives the two telescopic ends to extend and retract synchronously, which drives the drive rod 206 connected to it to slide radially. During the sliding process, the end of the drive rod 206 will disengage from the second connecting groove 203 of the outer winding reel 201 that does not need to participate in the extension, or insert into the second connecting groove 203 of the inner winding reel 201 that needs to be driven.

[0041] During this process, the linkage rod 205 remains in close contact with the end of the drive rod 206 under the elastic force of the spring 204. If the drive rod 206 is pulled out, the linkage rod 205 pops out to fill the gap. If the drive rod 206 is inserted, it pushes open the linkage rod 205. This adaptive cooperation ensures that the drive rod 206 can smoothly pass through the multi-layer structure and accurately lock the winding reel 201 of the target layer.

[0042] After the layer locking is completed, the first motor 308 is started to drive the bidirectional lead screw 307 to rotate. The bidirectional lead screw 307 drives the two second rotating seats 304 to move closer or further apart. Through the lever thrust generated by the two sets of linkage plates 303, the first rotating seat 302 and the inner frame 301 connected to it are pushed to move axially. Since the drive rod 206 has locked the inner frame 301 and all the inner winding reels 201 of the selected layer into one piece, these winding reels 201 will extend towards the front of the fixed frame 1 synchronously with respect to the outer layer winding reels 201 that are not locked, driven by the inner frame 301.

[0043] At this time, the limiting protrusion 501 slides inside the limiting groove 5, playing a precise axial guiding and circumferential torque transmission role, until the selected winding reel 201 is fully extended and forms the mold with the required winding diameter.

[0044] After the mold is in place, the external robot arm fixes one end of the electrical steel sheet to the surface of the outermost winding reel 201. The second motor 4 is started to drive the turntable 2 and all the extended winding reels 201 to rotate at high speed to perform the winding operation. After the winding is completed, the first motor 308 reverses to drive the winding reel 201 to retract and reset, which is convenient for unloading and the next diameter change operation.

Claims

1. A winding device for electrical steel sheets for the core of a new energy vehicle motor, comprising: A fixed frame (1), a turntable (2) rotatably connected to the front side of the fixed frame (1), and a second motor (4) that drives the turntable (2) to rotate; the turntable (2) is provided with a number of winding discs (201) with decreasing diameters nested from the outside to the inside; The feature is that: the innermost winding reel (201) is connected to an inner frame (301), the inner frame (301) is provided with a two-way cylinder (3) and a drive rod (206) driven by it, and the drive rod (206) passes through several winding reels (201) along the axial direction; The turntable (2) is provided with a first motor (308) and a two-way lead screw (307) on its side. A linkage transmission mechanism is provided between the two-way lead screw (307) and the inner frame (301) to convert the rotational motion into axial thrust, which is used to drive the winding reel (201) selected by the drive rod (206) to move axially.

2. The electrical steel sheet winding device for the core of a new energy vehicle motor according to claim 1, characterized in that, An outer frame (305) is fixed on one side of the turntable (2), and a drive frame (306) is fixed on one side of the outer frame (305). The bidirectional lead screw (307) is rotatably connected inside the drive frame (306). The first motor (308) is fixed to the top of the drive frame (306) and connected to one end of the bidirectional lead screw (307).

3. The electrical steel sheet winding device for the core of a new energy vehicle motor according to claim 2, characterized in that, The linkage transmission mechanism includes two second rotating seats (304) threaded to the outer wall of the bidirectional lead screw (307), two first rotating seats (302) fixed to one side of the inner frame (301), and a linkage plate (303) rotatably connected between the first rotating seats (302) and the second rotating seats (304).

4. The electrical steel sheet winding device for the core of a new energy vehicle motor according to claim 1, characterized in that, The inner wall of the winding reel (201) is provided with a second connecting groove (203) on both sides, and the turntable (2) is provided with a first connecting groove (202) at the position corresponding to the second connecting groove (203).

5. The electrical steel sheet winding device for the core of a new energy vehicle motor according to claim 4, characterized in that, A linkage rod (205) is slidably disposed inside the first connecting groove (202), and a spring (204) is installed between the linkage rod (205) and the inner wall of the first connecting groove (202).

6. The electrical steel sheet winding device for the core of a new energy vehicle motor according to claim 5, characterized in that, The drive rod (206) passes through several second connecting grooves (203) and abuts against one end of the linkage rod (205). When the bidirectional cylinder (3) drives the drive rod (206) to slide, the linkage rod (205) disengages from the second connecting grooves (203) in the corresponding several winding discs (201).

7. A winding device for electrical steel sheets for the core of a new energy vehicle motor according to claim 6, characterized in that, The spring (204) always applies elastic force to the linkage rod (205), so that the linkage rod (205) and the drive rod (206) remain in contact, and the drive rod (206) enters the second connecting groove (203) in the corresponding plurality of winding discs (201) when it extends or retracts.

8. The electrical steel sheet winding device for the core of a new energy vehicle motor according to claim 1, characterized in that, A guide structure is provided between adjacent winding reels (201). The guide structure includes a limiting groove (5) formed on the outer wall of the winding reel (201) and a limiting protrusion (501) provided on the inner wall of the winding reel (201) and slidably fitted inside the limiting groove (5).

9. A winding device for electrical steel sheets for the core of a new energy vehicle motor according to claim 1, characterized in that, The drive rod (206) passes through the second connecting slot (203) of the multiple turntables (2), so that the corresponding number of winding discs (201) can extend to the front side of the fixing frame (1) at the same time.

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