Automatic wire drawing machine for motor stator lead

Abstract

The application relates to the technical field of motor manufacturing equipment, in particular to a motor stator lead automatic pulling machine which comprises a base, a tension adjusting assembly, a synchronous pulling assembly and a positioning and clamping assembly. The base is provided with sliding rails, the two ends of the sliding rails are respectively provided with first and second support frames, the inner side of the first support frame is connected with a driving module, the driving module is in transmission connection with the synchronous pulling assembly, the synchronous pulling assembly is matched with the sliding rails through sliding blocks, the inner side of the second support frame is provided with the tension adjusting assembly, the two are connected through a flexible traction member, and the positioning and clamping assembly is arranged in the middle of the base. The dynamic tension control is realized through the tension adjusting assembly, the synchronous pulling assembly is designed in a multi-shaft linkage mode to improve the efficiency, and the positioning and clamping assembly ensures the stability of the leads. The application can efficiently and accurately complete the synchronous pulling operation of multiple leads, is high in adaptability, and has significant technical advantages and application value.

Description

Technical Field

[0001] This utility model belongs to the technical field of motor manufacturing and automation equipment, specifically an automatic stator lead wire pulling machine for motors. Background Technology

[0002] With the development of motor manufacturing technology, the stator lead drawing process is gradually moving towards automation. However, in actual production, existing lead drawing equipment still has some problems. For example, many machines rely on manual intervention during operation, resulting in low efficiency and insufficient precision. In addition, although some machines have achieved automation, their complex structure and high maintenance costs make it difficult to meet the demands of efficient and stable production.

[0003] A search revealed a submersible motor winding wire pulling mechanism with publication number CN112653305B, published on November 2, 2021. This design achieves the wire pulling function through the cooperation of a fixed wheel assembly and a transmission wheel assembly, and uses a variable frequency motor to drive the transmission wheel rotation, solving the problems of high labor intensity and low efficiency associated with traditional wire threading methods. However, this design is primarily aimed at the application scenario of submersible motor winding wires, and its wire pulling mechanism design does not fully consider the special requirements of motor stator leads, such as precise control of lead tension and the function of synchronously pulling multiple leads. Furthermore, the transmission system of this equipment is relatively complex, involving multiple gear meshing, increasing the manufacturing difficulty and the risk of malfunctions during operation, making it difficult to meet the needs of large-volume, high-precision motor stator lead pulling operations.

[0004] A search revealed a motor winding assembly pulling device with publication number CN110417212B, published on March 26, 2024. This design includes a support mechanism, a pulling structure, and a conveying mechanism, capable of pulling down and precisely positioning the winding assembly inserted in the stator slots, thereby improving the quality and aesthetics of the winding assembly. However, the main function of this device is focused on the pulling down operation of the winding assembly, lacking a specific design for the pulling process of the motor stator leads. Specifically, the device does not provide a dynamic adjustment function for the lead tension, which may lead to uneven stress or breakage of the lead during the pulling process. Furthermore, its pulling structure lacks flexibility, making it difficult to adapt to the diverse needs of different specifications of motor stator leads, thus limiting its widespread application in actual production.

[0005] The aforementioned problems indicate that current wire pulling equipment on the market, when applied to motor stator leads, generally suffers from limited functionality, insufficient tension control, and poor adaptability. Therefore, this invention provides an automatic motor stator lead pulling machine to overcome these shortcomings and offer a more efficient, precise, and adaptable solution. Utility Model Content

[0006] This utility model discloses an automatic stator lead wire pulling machine for motors, relating to the technical field of motor manufacturing equipment. It includes a base, a tension adjustment component, a synchronous wire pulling component, and a positioning clamping component. The upper surface of the base is provided with a slide rail, and a first support frame and a second support frame are respectively installed at both ends of the slide rail. A drive module is fixedly connected to the inner side of the first support frame, and the output end of the drive module is drively connected to the synchronous wire pulling component. The synchronous wire pulling component slides along the slide rail via a slider. A tension adjustment component is provided on the inner side of the second support frame, and the tension adjustment component is connected to the synchronous wire pulling component via a flexible traction member. The positioning clamping component is installed in the middle of the base and cooperates with the synchronous wire pulling component.

[0007] This automatic stator lead wire pulling machine for motors utilizes a dynamic balance structure formed by a flexible traction component between the tension adjustment assembly and the synchronous pulling assembly. This controls the lead wire tension within a preset range, preventing lead wire breakage due to excessive tension or uneven pulling due to insufficient tension. The synchronous pulling assembly employs a multi-axis linkage design, driving multiple pulling units synchronously via a drive module to achieve simultaneous pulling of multiple leads. The positioning and clamping assembly uses adjustable clamps to precisely position the leads, ensuring their stability during the pulling process.

[0008] Specifically, the tension adjustment assembly includes a tension wheel assembly and an elastic buffer mechanism. The tension wheel assembly consists of two parallel guide wheels, each with an annular groove on its outer circumference to accommodate the lead wire and prevent it from shifting. The elastic buffer mechanism includes a spring rod and a limiting sleeve. One end of the spring rod is fixedly connected to the support of the tension wheel assembly, and the other end is embedded inside the limiting sleeve. The inner wall of the limiting sleeve has a damping layer to absorb the rebound force of the spring rod and limit the movement range of the tension wheel assembly. When the lead wire is under tension, the tension wheel assembly moves along the slide rail, and the spring rod extends and retracts accordingly, thereby achieving dynamic adjustment of the lead wire tension.

[0009] The synchronous wire pulling assembly includes a wire pulling frame, a drive gear set, and a wire pulling claw assembly. The wire pulling frame slides along a slide rail via a slider. The drive gear set is mounted on top of the wire pulling frame and meshes with the output shaft of the drive module. The wire pulling claw assembly is located at the bottom of the wire pulling frame and consists of multiple independent wire pulling claws. Each wire pulling claw has an arc-shaped clamping groove at its front end for clamping the lead wire. The rear end of each wire pulling claw is connected to the drive gear set via a connecting rod. When the drive gear set rotates, the connecting rod drives the wire pulling claw to move vertically, thereby achieving the clamping and releasing action of the lead wire.

[0010] The positioning and clamping assembly includes a clamping base, an adjusting screw, and a clamping arm. The clamping base is fixedly installed in the middle of the base. The adjusting screw passes through the clamping base and is threadedly connected to the clamping arm. A rubber pad is provided at the end of the clamping arm to protect the lead wire surface from damage. By rotating the adjusting screw, the position of the clamping arm can be adjusted to accommodate lead wires of different specifications. Limiting baffles are provided on both sides of the clamping base to prevent lateral displacement of the lead wire during the pulling process.

[0011] Furthermore, the flexible traction component is a high-strength fiber rope, with one end fixed to the bracket of the tension adjustment assembly and the other end passing around the guide wheel of the synchronous pull cable assembly and connected to the pull cable frame. The length of the flexible traction component can be adjusted according to actual needs to meet different pull cable distance requirements.

[0012] The working principle of this automatic stator lead wire pulling machine is as follows: First, the lead wire to be pulled is passed through the guide wheel of the tension adjustment component and fixed in the pull claw assembly of the synchronous pull assembly. After the drive module is started, the drive gear set drives the pull claw assembly to move along the slide rail, while the flexible traction component pulls the tension wheel assembly of the tension adjustment component, making it dynamically adjusted according to the actual tension of the lead wire. During this process, the positioning and clamping component precisely positions the lead wire to ensure that it remains straight during the pulling process. After the pulling is completed, the pull claw assembly releases the lead wire, completing one pulling operation.

[0013] Through the above structural design, this invention solves the problems of insufficient tension control, difficulty in synchronously pulling multiple leads, and poor adaptability in existing lead pulling equipment during the motor stator lead pulling process. The tension adjustment component achieves precise control of lead tension through an elastic buffer mechanism, the synchronous lead pulling component improves pulling efficiency through a multi-axis linkage design, and the positioning clamping component enhances the flexibility of the equipment through adjustable clamps. These technical means work together to enable this invention to meet the requirements of efficient, precise, and highly adaptable motor stator lead pulling.

[0014] Furthermore, the drive module uses a servo motor as its power source, and its output shaft is connected to the drive gear set via a coupling to ensure smooth and reliable transmission. The control system of the servo motor has a built-in tension feedback module, which can monitor the tension changes of the lead wire in real time and adjust the output power of the drive module according to the monitoring results, thereby realizing closed-loop control.

[0015] In summary, this utility model provides an efficient, precise, and highly adaptable automatic wire pulling solution for motor stator leads through the coordinated operation of the tension adjustment component, the synchronous wire pulling component, and the positioning clamping component, which has significant technical advantages and application value. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the outer structure of the clamping arm.

[0018] Figure 3 This is a schematic diagram of the outer structure of the slide rail.

[0019] Figure 4 This is a schematic diagram of the outer structure of the tension wheel assembly.

[0020] The attached diagram is labeled as follows: 1. Base; 2. Slide rail; 3. First support frame; 4. Second support frame; 5. Drive module; 6. Synchronous cable pulling assembly; 7. Tension adjustment assembly; 8. Positioning and clamping assembly; 9. Flexible traction component; 10. Tension wheel assembly; 11. Elastic buffer mechanism; 12. Cable pulling frame; 13. Drive gear set; 14. Cable pulling claw assembly; 15. Clamping base; 16. Adjusting screw; 17. Clamping arm; 18. Limiting baffle. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Specific implementation examples are given below.

[0023] This utility model provides an automatic stator lead wire pulling machine for motors, the structure of which is as follows: Figures 1 to 4 As shown in the accompanying drawings, the specific embodiments of this utility model will be described in detail below.

[0024] The base 1 is the fundamental component of the entire device. A slide rail 2 is mounted on its upper surface, extending along the length of the base 1 to guide and support other components. A first support frame 3 and a second support frame 4 are respectively installed at both ends of the slide rail 2. The first and second support frames 3 and 4 are fixed to the base 1 with bolts to ensure stable positioning and prevent loosening. A drive module 5 is fixedly connected to the inner side of the first support frame 3. The drive module 5 uses a servo motor as its power source, and its output shaft is connected to the drive gear set 13 in the synchronous wire pulling assembly 6 via a coupling. A tension adjustment assembly 7 is located on the inner side of the second support frame 4. The tension adjustment assembly 7 is connected to the synchronous wire pulling assembly 6 via a flexible traction member 9, forming a dynamic balance structure. A positioning clamping assembly 8 is installed in the middle of the base 1 and cooperates with the synchronous wire pulling assembly 6 for precise positioning of the lead wire.

[0025] The tension adjustment assembly 7 includes a tension wheel assembly 10 and an elastic buffer mechanism 11, such as... Figure 2 As shown. The tension wheel assembly 10 consists of two parallel guide wheels, which are mounted on a bracket via bearings. An annular groove is formed on the outer circumference of each guide wheel to accommodate the lead wire and prevent it from shifting. The elastic buffer mechanism 11 includes a spring rod and a limiting sleeve. One end of the spring rod is fixedly connected to the bracket of the tension wheel assembly 10, and the other end is embedded inside the limiting sleeve. A damping layer is provided on the inner wall of the limiting sleeve to absorb the rebound force of the spring rod and limit the movement range of the tension wheel assembly 10. When the lead wire is under tension, the tension wheel assembly 10 moves along the direction of the slide rail 2, and the spring rod extends and retracts accordingly, thereby achieving dynamic adjustment of the lead wire tension. One end of the flexible traction member 9 is fixed to the bracket of the tension adjustment assembly 7, and the other end passes around the guide wheel of the synchronous pull wire assembly 6 and connects to the pull wire frame 12. The length of the flexible traction member 9 can be adjusted according to actual needs to meet different pull wire distance requirements.

[0026] Synchronous cable pull assembly 6 includes cable pull frame 12, drive gear set 13, and cable pull claw assembly 14, such as Figure 3 As shown. The pull frame 12 slides along the slide rail 2 via a slider, with the slider embedded in the groove of the slide rail 2 to ensure smooth movement of the pull frame 12 along the slide rail 2. The drive gear set 13 is mounted on top of the pull frame 12 and meshes with the output shaft of the drive module 5. The drive gear set 13 transmits power to the pull claw set 14 through multi-stage gear transmission. The pull claw set 14 is located at the bottom of the pull frame 12 and consists of multiple independent pull claws. Each pull claw has an arc-shaped clamping groove at its front end for clamping the lead wire. The rear end of the pull claw is connected to the drive gear set 13 via a connecting rod. When the drive gear set 13 rotates, the connecting rod drives the pull claw to move vertically, thereby realizing the clamping and releasing action of the lead wire.

[0027] The positioning and clamping assembly 8 includes a clamping base 15, an adjusting screw 16, and a clamping arm 17, such as Figure 4 As shown. The clamping base 15 is bolted to the center of the base 1, and the adjusting screw 16 passes through the clamping base 15 and is threadedly connected to the clamping arm 17. A rubber pad is provided at the end of the clamping arm 17 to protect the lead wire surface from damage. By rotating the adjusting screw 16, the position of the clamping arm 17 can be adjusted to accommodate lead wires of different specifications. Limiting baffles 18 are provided on both sides of the clamping base 15. The limiting baffles 18 are fixed to the clamping base 15 by welding to prevent lateral displacement of the lead wire during the pulling process.

[0028] The working process of the automatic stator lead wire pulling machine is as follows: First, the lead wire to be pulled is passed through the guide wheel of the tension adjustment component 7 and fixed in the pull claw group 14 of the synchronous pull component 6. After the drive module 5 is started, the servo motor drives the drive gear group 13 to rotate through the coupling. The drive gear group 13 transmits power to the pull claw group 14 through multi-stage gear transmission, causing the pull claw group 14 to move along the slide rail 2. During this process, the flexible traction component 9 pulls the tension wheel group 10 of the tension adjustment component 7, so that it dynamically adjusts according to the actual tension of the lead wire. When the lead wire is under tension, the tension wheel group 10 moves along the slide rail 2, and the spring rod extends and retracts accordingly, thereby realizing the dynamic adjustment of the lead wire tension. The positioning clamping component 8 accurately positions the lead wire to ensure that it remains in a straight state during the pulling process. After the pulling is completed, the pull claw group 14 releases the lead wire, completing one pulling operation.

[0029] The control system of drive module 5 has a built-in tension feedback module, which can monitor the tension changes of the lead wire in real time and adjust the output power of the servo motor according to the monitoring results, thereby realizing closed-loop control. Through the above structural design, this utility model solves the problems of insufficient tension control, difficulty in synchronously pulling multiple lead wires, and poor adaptability in the existing wire pulling equipment during the motor stator lead wire pulling process.

[0030] The various components of this invention work together through mechanical connections and transmissions. For example, the drive module 5 is connected to the drive gear set 13 via a coupling, the drive gear set 13 is connected to the cable pull claw assembly 14 via a connecting rod, the cable pull claw assembly 14 clamps the lead wire via a clamping slot, the flexible traction component 9 is connected to the cable pull frame 12 via a tension wheel assembly 10, and the positioning clamping assembly 8 adjusts the position of the clamping arm 17 via an adjusting screw 16. The connections and coordination between these components ensure the overall performance and stability of the equipment.

[0031] In practical applications, this invention can be widely used in the field of motor manufacturing, especially in the automated wire pulling process of motor stator leads. Through the coordinated work of the tension adjustment component 7, the synchronous wire pulling component 6, and the positioning clamping component 8, this invention can meet the requirements of efficient, precise, and highly adaptable motor stator lead pulling. To better enable those skilled in the art to fully understand and implement this invention, the specific implementation principle of this invention is further explained below in conjunction with a specific application scenario.

[0032] In the actual operation of pulling the motor stator leads, the multiple leads to be pulled are first passed sequentially through the guide wheels in the tension adjusting assembly 7, and their ends are fixed in the pull claw group 14 of the synchronous pull assembly 6. Specifically, each lead needs to be embedded in the annular groove of the tension wheel group 10 to ensure that it does not shift during the pulling process. Subsequently, the position of the clamping arm 17 is adjusted by rotating the adjusting screw 16 in the positioning clamping assembly 8 to match the lead specifications. The rubber pad at the end of the clamping arm 17 can effectively protect the lead surface and avoid damage caused by excessive clamping force. At the same time, the presence of the limiting baffle 18 can prevent the lead from shifting laterally during the pulling process, thereby ensuring that the lead always remains in a straight state.

[0033] After the drive module 5 is started, the servo motor drives the drive gear set 13 to rotate through the coupling. The drive gear set 13 transmits power to the wire pull claw set 14 through multi-stage gear transmission. During this process, the wire pull frame 12 moves smoothly along the slide rail 2, and the flexible traction member 9 pulls the tension wheel set 10 of the tension adjustment component 7 accordingly. When the lead wire is under tension, the tension wheel set 10 moves along the slide rail 2, and the spring rod extends and retracts accordingly. The elastic buffer mechanism 11 absorbs the rebound force through the damping layer and limits the movement range of the tension wheel set 10, thereby realizing the dynamic adjustment of the lead wire tension. This design can ensure that the lead wire is always within the preset tension range during the wire pulling process, avoiding problems such as breakage due to excessive tension or uneven wire pulling due to insufficient tension.

[0034] During the wire pulling process, the tension feedback module built into the control system of drive module 5 monitors the tension changes of the lead wire in real time. When the tension exceeds the preset range, the control system automatically adjusts the output power of the servo motor to achieve closed-loop control. For example, if the lead wire tension is too high, the speed of the servo motor will be appropriately reduced; if the tension is insufficient, the speed will be increased to compensate for the tension. This dynamic adjustment mechanism not only improves the stability of the wire pulling process but also significantly enhances the wire pulling accuracy.

[0035] Furthermore, the design of the synchronous wire pulling assembly 6 enables simultaneous wire pulling operations for multiple leads. Specifically, the drive gear set 13 drives multiple independent wire pulling claws to move vertically via connecting rods, and the arc-shaped clamping groove at the front end of each wire pulling claw can firmly clamp the lead. When the drive gear set 13 rotates, the connecting rods move synchronously, ensuring that the movements of all wire pulling claws are consistent, thereby achieving synchronous wire pulling of multiple leads. This multi-axis linkage design significantly improves wire pulling efficiency, making it particularly suitable for mass production scenarios.

[0036] After completing one wire pulling operation, the wire pulling claw assembly 14 releases the lead wire, and the equipment returns to its initial state, ready for the next round of wire pulling. Throughout the process, the positioning and clamping assembly 8 precisely positions the lead wire, ensuring its stability during the wire pulling process. Through the synergistic effect of the above steps and principles, this invention can meet the requirements for efficient, precise, and highly adaptable motor stator lead wire pulling.

[0037] All content not described in detail in this specification is prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are prior art and are therefore not shown in the figures, nor will they be described further here.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automatic stator lead wire pulling machine for motors, characterized in that, The system includes a base (1), a slide rail (2), a first support frame (3), a second support frame (4), a drive module (5), a synchronous pull wire assembly (6), a tension adjustment assembly (7), and a positioning clamping assembly (8). The slide rail (2) is located on the upper surface of the base (1). The first support frame (3) and the second support frame (4) are respectively installed at both ends of the slide rail (2). The drive module (5) is fixed inside the first support frame (3). The synchronous pull wire assembly (6) slides with the slide rail (2) through a slider. The tension adjustment assembly (7) is located inside the second support frame (4) and is connected to the synchronous pull wire assembly (6) through a flexible traction member (9). The positioning clamping assembly (8) is installed in the middle of the base (1) and cooperates with the synchronous pull wire assembly (6).

2. The automatic stator lead wire pulling machine for motors according to claim 1, characterized in that, The tension adjustment assembly (7) includes a tension wheel assembly (10) and an elastic buffer mechanism (11). The tension wheel assembly (10) consists of two parallel guide wheels. The outer circumferential surface of the guide wheels is provided with an annular groove. The elastic buffer mechanism (11) includes a spring rod and a limiting sleeve. One end of the spring rod is fixedly connected to the bracket of the tension wheel assembly (10), and the other end is embedded inside the limiting sleeve. The inner wall of the limiting sleeve is provided with a damping layer.

3. The automatic stator lead wire pulling machine for motors according to claim 1, characterized in that, The synchronous pull wire assembly (6) includes a pull wire frame (12), a drive gear set (13), and a pull wire claw set (14). The pull wire frame (12) is slidably engaged with the slide rail (2) via a slider. The drive gear set (13) is installed on the top of the pull wire frame (12) and meshes with the output shaft of the drive module (5). The pull wire claw set (14) is located at the bottom of the pull wire frame (12). The pull wire claw set (14) consists of multiple independent pull wire claws. Each pull wire claw has an arc-shaped clamping groove at its front end and is connected to the drive gear set (13) via a connecting rod at its rear end.

4. The automatic stator lead wire pulling machine for motors according to claim 1, characterized in that, The positioning clamping assembly (8) includes a clamping base (15), an adjusting screw (16), and a clamping arm (17). The clamping base (15) is fixedly installed in the middle of the base (1). The adjusting screw (16) passes through the clamping base (15) and is threadedly connected to the clamping arm (17). A rubber pad is provided at the end of the clamping arm (17). Limiting baffles (18) are provided on both sides of the clamping base (15).

5. The automatic stator lead wire pulling machine for motors according to claim 1, characterized in that, The flexible traction component (9) is a high-strength fiber rope, one end of which is fixed on the bracket of the tension adjustment component (7), and the other end passes around the guide wheel of the synchronous pull wire component (6) and is connected to the pull wire frame (12).

6. The automatic stator lead wire pulling machine for motors according to claim 2, characterized in that, The tension wheel assembly (10) moves along the direction of the slide rail (2), and the spring rod extends and retracts with the movement of the tension wheel assembly (10) to achieve dynamic adjustment of the lead tension.

7. The automatic stator lead wire pulling machine for motors according to claim 3, characterized in that, The drive gear set (13) transmits power to the wire puller set (14) through multi-stage gear transmission. The wire puller set (14) moves in the vertical direction to achieve the clamping and releasing action of the lead wire.

8. The automatic stator lead wire pulling machine for motors according to claim 4, characterized in that, The adjusting screw (16) adjusts the position of the clamping arm (17) by rotation to accommodate lead wires of different specifications.

9. The automatic stator lead wire pulling machine for motors according to claim 1, characterized in that, The drive module (5) uses a servo motor as a power source, and its output shaft is connected to the drive gear set (13) through a coupling.

10. The automatic stator lead wire pulling machine for motors according to claim 9, characterized in that, The control system of the servo motor has a built-in tension feedback module, which is used to monitor the tension changes of the lead wire in real time and adjust the output power of the servo motor according to the monitoring results.

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