A motor coil terminal wire twisting device

Abstract

This invention relates to a motor coil terminal twisting device, comprising a machine body, a clamping mechanism, a conveyor belt, a wire guide, and a controller. The clamping mechanism is connected to the machine body and is used to clamp and twist the coil end wires. The wire guide is connected to the conveyor belt and is used to separate and guide the coil end wires. The controller is used to control the clamping mechanism to clamp and twist the coil end wires on the wire guide. When using the motor coil terminal twisting device of this invention to twist motor coil terminals, the unique circumferential linkage adjustable three-jaw clamping scheme allows the device to effectively process motor coil terminals of different wire diameters and wire harness specifications without changing any clamps. This greatly enhances the flexible production capacity of the equipment, enabling it to adapt to the needs of modern production of multiple varieties and small batches.

Description

Technical Field

[0001] This invention relates to the field of motor manufacturing technology, and more specifically to a motor coil terminal twisting device. Background Technology

[0002] In the field of motor manufacturing, the screwing of coil terminals is a critical assembly process, and its quality directly affects the reliability of the motor's electrical connection. Currently, equipment for automatically screwing coil terminals generally suffers from insufficient adaptability. Specifically, when the specifications of the coil end wires (such as wire diameter and number of wire bundles) change, it is often necessary to replace or adjust the clamping fixtures; otherwise, effective and reliable clamping and screwing cannot be achieved. This limitation leads to cumbersome production line changeovers, reduces equipment flexibility, and increases the overall cost of producing small batches of multi-specification products. Therefore, developing an automated screwing device that can adaptively clamp coil terminals of different specifications and reduce or even eliminate fixture replacements is of great significance for improving the automation level and production efficiency of motor manufacturing. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a motor coil terminal twisting device to solve the problems of narrow applicability of clamping tools in the prior art, the need to frequently change clamps for different specifications of coil end wires, resulting in poor equipment versatility and low production efficiency.

[0004] This invention is achieved through the following technical solution: A motor coil terminal twisting device includes a machine body, a clamping mechanism, a conveyor belt, a wire guide, and a controller. The clamping mechanism is connected to the machine body and is used to clamp and twist the coil end wires. The wire guide is connected to the conveyor belt and is used to separate and guide the coil end wires. The controller is used to control the clamping mechanism to clamp and twist the coil end wires on the wire guide. The device is characterized by: The clamping mechanism includes a support plate and three clamping claws arranged in a ring around the center line of the support plate. The three clamping claws are all arc-shaped and their inner arc surfaces surround each other to form a clamping opening. One end of any clamping claw can slide along the arc length of its adjacent clamping claw to connect to the inner arc surface of the adjacent clamping claw. All three clamping claws can slide to connect to the support plate. The support plate can slide to connect to the machine body in a direction toward or away from the conveyor belt. The controller includes an alignment module, a drive module, and a twisting module. The alignment module is electrically connected to the support plate and the cable guide. The alignment module controls the movement of the support plate to align the clamping port with the coil end wire of the cable guide, and sends an electrical signal to the drive module after the clamping port and the coil end wire of the cable guide are aligned. The drive module is electrically connected to the clamping claws. After receiving the electrical signal from the alignment module, the drive module drives one end of each of the three clamping claws to slide along the arc length direction of its corresponding clamping claw. The twisting module controls the three clamping claws to rotate around the center line of the three clamping claws after clamping the coil end wire.

[0005] Furthermore, the alignment module includes a support rod, a displacement sensing unit, and a conversion unit; the support rod is arranged perpendicular to the conveyor belt direction and can be slidably connected to the machine body in the direction toward or away from the conveyor belt; the end of the support rod away from the conveyor belt is elastically connected to the machine body; the end face of the support rod near the conveyor belt is inclined along the conveying direction of the conveyor belt to form an inclined surface, and the inclined surface supports the cable guide. The displacement sensing unit is connected to the abutment rod and senses the duration of displacement of the abutment rod along its length. After the displacement is sensed, it controls the conveyor belt to stop conveying and sends the duration data to the conversion module. The conversion unit stores conveyor belt speed data and cable guide specification data. After receiving the duration data sent by the displacement sensing unit, it calculates the length of the cable guide using the conveyor belt speed data and duration data, determines the cable guide specification information based on the length of the cable guide, and sends it to the execution unit. The execution unit receives the specifications of the wire guide to determine the wire guide position at the end of the coil, controls the support plate to move so that the clamping port is aligned with the wire guide at the end of the coil, and sends an electrical signal to the drive module.

[0006] Furthermore, the upper end face of the cable guide is recessed to form multiple slots perpendicular to the conveyor belt, and each slot is connected to the two side walls of the cable guide facing and away from the support plate. Rotating rods are connected to the opposite side walls of each slot in a direction perpendicular to the side walls. Multiple cable clamps are also included, each corresponding to one of the slots. The two sides of each cable clamp are connected to the rotating rods connected to the corresponding side walls of the slot. A first pole piece is provided on the side of the abutment rod opposite to the inclined surface, and a second pole piece is connected to the side of the cable guide away from the conveyor belt's moving direction. The first and second pole pieces are connected to allow the rotating rod to be electrically connected to the execution unit. The execution unit controls the rotation of the rotating rod when the support plate does not correspond to the slot.

[0007] Furthermore, the inner arc surfaces of the three gripping claws are all recessed inward to form sliding grooves, and the ends of the adjacent gripping claws of the three gripping claws can be slidably connected to the sliding grooves; the side of the three gripping claws facing the support plate is recessed inward to form grooves, and the support plate is connected to three sliding rods in a direction perpendicular to the support plate, and the three sliding rods correspond one-to-one with the grooves of the three gripping claws. The groove sidewalls of the three gripping claws are all provided with teeth. The drive module includes gears and a drive unit. There are three gears, which are connected one-to-one to the sliding rods of the three gripping claws, and each gear meshes with one-to-one with the three teeth. The drive unit is used to drive the gears to rotate.

[0008] Furthermore, it also includes an internal gear ring, which is coaxially arranged with the support disk and slidably connected to the support disk. The internal gear ring meshes with the gears of the three clamping claws. It also includes a motor, which is connected to the support disk, and the output end of the motor is connected to any one of the three gears.

[0009] Furthermore, the inner surfaces of the three gripping claws are provided with teeth, and the spacing and depth of the teeth gradually increase from one end of the three gripping claws to the other end.

[0010] Furthermore, the driving module includes a control unit, a sensing module, a code disk, and a comparison unit; The control unit is used to receive electrical signals from the execution unit and control the start and stop of the motor; The sensing module includes a torque sensor and a data transmission unit. The torque sensor is connected to the sliding rod, and the data transmission unit is used to receive the torque data from the torque sensor and then send the data signal to the comparison module. The encoder disk stores corresponding data information of the number of rotations and the torque applied. The encoder disk is connected to the sliding rod. During the rotation of the sliding rod, the encoder disk senses the number of rotations of the sliding rod, determines the torque data based on the number of rotations, and sends it to the comparison module. The comparison module compares the torque signal from the sensing module with the torque data converted by the encoder. It presets a threshold for the difference between the two values ​​and controls the motor to stop rotating when the two values ​​reach the threshold.

[0011] The beneficial effects of this invention are as follows: This motor coil terminal twisting device employs a unique circumferentially linked adjustable three-jaw clamping scheme, enabling it to effectively process motor coil terminals of different wire diameters and wire harness specifications without changing any clamps. This significantly enhances the device's flexible production capabilities, allowing it to adapt to the demands of modern production processes that require diverse product types and small batches.

[0012] This motor coil terminal twisting device features an integrated control system that enables fully automated closed-loop control of the entire process, from wire positioning and adaptive clamping to standard torque / turns twisting, reducing quality fluctuations caused by human intervention. Adaptive force control and an anti-slip tooth structure further enhance clamping reliability and twisting consistency.

[0013] This type of motor coil terminal twisting equipment automates the process, eliminating downtime for fixture changes or adjustments and enabling efficient continuous operation. Precise positioning and rapid operation cycles significantly shorten the processing cycle for individual products, improving the overall capacity and output quality of the production line.

[0014] This motor coil terminal twisting device features a modular controller design and a mechanical linkage mechanism that is relatively durable and easy to maintain. Clearly defined functional zones (alignment, drive, twisting) and parametric programming facilitate rapid program debugging or upgrades based on new production tasks, resulting in lower long-term operating costs.

[0015] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention without the body; Figure 3 For the present invention Figure 2 A magnified view of part A in the image; Figure 4 This is a schematic diagram showing the assembly of the clamping claw, gear, and support disk of the present invention; Figure 5 This is a schematic diagram of the clamping claw of the present invention.

[0017] In the diagram: 1. Body; 2. Clamping mechanism; 21. Support plate; 22. Clamping claw; 221. Sliding groove; 222. Groove; 23. Sliding rod; 24. Tooth; 25. Gear; 26. Internal gear ring; 27. Motor; 3. Conveyor belt; 4. Cable guide; 41. Slot; 42. Cable clamp; 43. Rotating rod; 5. Supporting rod; 6. Controller; 7. Coil end wire. Detailed Implementation

[0018] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0019] Please see Figure 1-5 This invention provides a technical solution for a motor coil terminal twisting device: a motor coil terminal twisting device, comprising a machine body 1, a clamping mechanism 2, a conveyor belt 3, a wire guide 4, and a controller 6. The clamping mechanism 2 is connected to the machine body 1 and is used to clamp and twist the coil end wire 7. The wire guide 4 is connected to the conveyor belt 3 and is used for separating and guiding the coil end wire 7. The controller 6 is used to control the clamping mechanism 2 to clamp and twist the coil end wire 7 on the wire guide 4. The device is characterized by: The clamping mechanism 2 includes a support plate 21 and three clamping claws 22 arranged in a ring around the center line of the support plate 21. The three clamping claws 22 are all arc-shaped and their inner arc surfaces surround each other to form a clamping opening. One end of any clamping claw 22 can slide along the arc length of its adjacent clamping claw 22 to connect to the inner arc surface of the adjacent clamping claw 22. All three clamping claws 22 can slide to connect to the support plate 21. The support plate 21 can slide to connect to the machine body 1 in a direction toward or away from the conveyor belt 3. The controller 6 includes an alignment module, a drive module, and a twisting module. The alignment module is electrically connected to the support plate 21 and the wire guide 4. The alignment module controls the movement of the support plate 21 to align the clamping port with the coil end wire 7 of the wire guide 4, and sends an electrical signal to the drive module after the clamping port and the coil end wire 7 of the wire guide 4 are aligned. The drive module is electrically connected to the clamping claws 22. After receiving the electrical signal from the alignment module, the drive module drives one end of each of the three clamping claws 22 to slide along the arc length direction of its corresponding clamping claw 22. The twisting module controls the three clamping claws 22 to rotate around the center line of the three clamping claws 22 after clamping the coil end wire 7.

[0020] When using the motor 27 coil terminal twisting device of the present invention to twist the motor 27 coil terminal, the coil is first fixed on the conveyor belt 3 and the end wire 7 of the coil is sorted and passed through the wire guide 4. The multiple terminals of the coil are sorted and separated by the wire guide 4. Then, the coil terminals are conveyed to the corresponding position of the clamping mechanism 2 by the conveyor belt 3, so that the alignment module of the controller 6 aligns the clamping mechanism 2 and the end wire 7 of the coil.

[0021] Since the clamping mechanism 2 includes a support disk 21 and three clamping claws 22 arranged in a ring around the center line of the support disk 21, and the three clamping claws 22 are all arc-shaped with their inner arc surfaces surrounding each other to form a clamping opening, the alignment mechanism can complete the alignment by aligning the clamping opening with the position of the coil end wire 7. Since one end of any clamping claw 22 can slide along the arc length direction of its adjacent clamping claw 22 to connect with the inner arc surface of the adjacent clamping claw 22, that is, any clamping claw 22 can slide along the inner arc surface of its adjacent clamping claw 22. During the sliding process of the clamping claw 22 along the inner arc surface of its adjacent clamping claw 22, the clamping opening can be enlarged or reduced. When the clamping opening is reduced to be able to combine the wire bundle into one strand, the clamping opening can be further reduced to clamp the wire bundle. In this way, the clamping opening can clamp the coil end wire 7 within a certain diameter range, thereby expanding the scope of application of the present invention.

[0022] Since all three clamping claws 22 are slidably connected to the support plate 21, the positioning of the support plate 21 ensures that the center position of the clamping opening remains unchanged during the enlargement and reduction process. When the conveyor belt 3 transports the coil to the position of the three clamping claws 22, the drive module controls one end of each of the three clamping claws 22 to slide away from each other along the arc length direction of their respective clamping claws 22, thereby enlarging the clamping opening. Since the alignment module is used to control the movement of the support plate 21 to align the clamping opening with the coil end wire 7 of the cable guide 4, the support plate 21 can move up, down, left, and right in the vertical plane to correspond the position of the support plate 21 to the position of the coil end wire 7 combed by the cable guide 4 of different specifications. After aligning the center of the support plate 21 with the position of the coil end wire 7, the alignment module controls the support plate 21 to move towards the coil end wire 7. Since the clamping opening is enlarged at this time, it is convenient to let the loose coil end wire 7 enter the clamping opening. After the clamping opening and the coil end wire 7 of the wire guide 4 are aligned, the alignment module sends an electrical signal to the drive module. The drive module controls one end of the three clamping claws 22 to slide closer to each other along the arc length direction of their corresponding clamping claws 22, so that the clamping opening is reduced, so that the coil terminal can be clamped between the three clamping claws 22, thus completing the clamping. Then, the twisting module controls the three clamping claws 22 to rotate around the center line of the three clamping claws 22 to perform twisting. After the twisting is completed, the drive module controls one end of the three clamping claws 22 to slide away from each other along the arc length direction of their corresponding clamping claws 22, so that the clamping opening is enlarged, thereby detaching the coil end wire 7 and proceeding to the next operation.

[0023] With this structure, when using the motor 27 coil terminal twisting device of this invention to twist the motor 27 coil terminal, the unique circumferential linkage adjustable three-jaw clamping scheme enables the device to effectively process motor 27 coil terminals of different wire diameters and wire harness specifications without changing any clamps. This greatly enhances the flexible production capability of the equipment, enabling it to adapt to the needs of modern production with multiple varieties and small batches.

[0024] In this embodiment: the alignment module includes a support rod 5, a displacement sensing unit and a conversion unit; the support rod 5 is arranged perpendicular to the conveyor belt 3 and can be slidably connected to the machine body 1 in the direction toward or away from the conveyor belt 3; the end of the support rod 5 away from the conveyor belt 3 is elastically connected to the machine body 1; the end face of the support rod 5 near the conveyor belt 3 is inclined along the conveying direction of the conveyor belt 3 to form an inclined surface, and the inclined surface supports the cable guide 4; The displacement sensing unit is connected to the abutment rod 5 and senses the duration of displacement of the abutment rod 5 along its length. After the displacement is sensed, it controls the conveyor belt 3 to stop conveying and sends the duration data to the conversion module. The conversion unit stores the rotation speed data of the conveyor belt 3 and the specification data of the cable guide 4. After receiving the duration data sent by the displacement sensing unit, it calculates the length of the cable guide 4 by using the rotation speed data and duration data of the conveyor belt 3. Based on the length of the cable guide 4, it determines the specification information of the cable guide 4 and sends it to the execution unit. The execution unit receives the specification information of the wire guide 4 to determine the wire guide position of the coil end wire 7, controls the support plate 21 to move so that the clamping port is aligned with the coil end wire 7, and sends an electrical signal to the drive module.

[0025] When the cable guide 4 is conveyed to the position of the support rod 5 by the conveyor belt 3, the cable guide 4 abuts against the inclined surface, thereby pushing the support rod 5 to slide away from the conveyor belt 3. Since the displacement sensing unit is connected to the support rod 5 and senses the duration of displacement of the support rod 5 along its length, after the cable guide 4 has completely passed the support rod 5, the support rod 5 resets and records the duration of passage. By converting the passage duration and the rotation speed of the conveyor belt 3 by the conversion unit, the length of the cable guide 4 can be obtained, and the specifications of the cable guide 4 can be obtained accordingly. In this way, the execution unit obtains the specifications of the cable guide 4, so that it can control the support plate 21 to move and align the clamping port with the end wire 7 of the coil.

[0026] In this embodiment: the upper end face of the cable guide 4 is recessed to form a plurality of slots 41 arranged perpendicular to the conveyor belt 3. The plurality of slots 41 are all connected to the two side walls of the cable guide 4 facing and away from the support plate 21. The opposite side walls of the slots 41 are connected to rotating rods 43 in a direction perpendicular to the two side walls. The cable guide 42 also includes a plurality of cable clamps 42, which are located one-to-one in the plurality of slots 41. The two sides of the cable clamps 42 are connected to the rotating rods 43 connected to the side walls of the corresponding slots 41. The side of the abutment rod 5 opposite to the inclined surface is provided with a first pole piece. The side of the cable guide 4 away from the moving direction of the conveyor belt 3 is connected with a second pole piece. The first pole piece and the second pole piece are connected to each other so that the rotating rod 43 can be electrically connected to the execution unit. The execution unit is used to control the rotation of the rotating rod 43 when the support plate 21 does not correspond to the slot 41.

[0027] When the support plate 21 corresponds to the position of the wire clamp 42, the wire clamp 42 remains parallel to the support plate 21, so that the coil end wire 7 is directly facing the support plate 21, and the three clamping claws 22 can clamp the coil end wire 7. Since the execution unit is used to control the rotating rod 43 to rotate when the support plate 21 does not correspond to the slot 41, the wire clamp 42 that does not correspond to the support plate 21 tilts relative to the support plate 21, thereby causing the coil end wire 7 to tilt, thereby reducing the possibility of interference between the coil end wire 7 that does not correspond to the slot 41 and the twisting of the coil end wire 7 that corresponds to the slot 41.

[0028] Specifically, the cable guide 4 is detachably connected to the conveyor belt 3.

[0029] In this embodiment: the inner arc surfaces of the three clamping claws 22 are all recessed inward to form sliding grooves 221, and one end of each adjacent clamping claw 22 can be slidably connected to the sliding grooves 221; the side surfaces of the three clamping claws 22 facing the support plate 21 are recessed inward to form grooves 222, and the support plate 21 is connected to three sliding rods 23 in a direction perpendicular to the support plate 21, and the three sliding rods 23 correspond one-to-one with the grooves 222 of the three clamping claws 22; The sidewalls of the grooves 222 of the three gripping claws 22 are all provided with teeth 24. The drive module includes gears 25 and a drive unit. There are three gears 25, which are connected to the sliding rods 23 of the three gripping claws 22 respectively, and the three gears 25 are respectively meshed with the three teeth 24. The drive unit is used to drive the gears 25 to rotate.

[0030] Since the inner arc surfaces of the three clamping claws 22 are all concave inward to form sliding grooves 221, one end of each adjacent clamping claw 22 can be slidably connected to the sliding groove 221. Specifically, the two sides of one end of each of the three clamping claws 22 are concave inward so that one end can fit into the sliding groove 221. One end of any one of the three clamping claws 22 can be slidably connected to the inner arc surface of the adjacent clamping claw 22 along the arc length direction of its adjacent clamping claw 22. Since the side of each of the three clamping claws 22 facing the support plate 21 is concave inward to form grooves 222, three sliding rods 23 are connected to the support plate 21 in a direction perpendicular to the support plate 21. The three sliding rods 23 correspond one-to-one with the three clamping claws. The support plate 21 can be slidably connected by sliding the sliding rod 23 relative to the groove 222 of the 222. Since the sidewalls of the grooves 222 of the three clamping claws 22 are all provided with teeth 24, the drive module includes gears 25 and a drive unit. There are three gears 25, which are respectively connected to the sliding rods 23 of the three clamping claws 22, and each of the three gears 25 meshes with the three teeth 24. When the drive unit pushes the gears 25 corresponding to the three clamping claws 22 to rotate at the same time, the three clamping claws 22 can move along their arc length direction, thereby driving one end of the three clamping claws 22 to slide along the inner arc surface of their adjacent clamping claws 22. With this structure, the clamping opening can be adjusted to enlarge or reduce.

[0031] In this embodiment, it also includes an internal gear ring 26, which is coaxially arranged with the support disk 21 and slidably connected to the support disk 21. The internal gear ring 26 meshes with the gears 25 of the three clamping claws 22. It also includes a motor 27, which is connected to the support disk 21. The output end of the motor 27 is connected to any one of the three gears 25.

[0032] When the motor 27 rotates, it drives the gear 25 connected to it to rotate. Since the internal gear ring 26 is engaged with the gears 25 of the three clamping claws 22, the rotation of the gears 25 connected to the motor 27 drives the internal gear ring 26 to rotate. The rotation of the internal gear ring 26 can drive the other two gears 25 to rotate. In this way, the three gears 25 can rotate at the same time, and the clamping opening can be enlarged or reduced without changing the axis.

[0033] In this embodiment, the inner surfaces of the three gripping claws 22 are provided with teeth, and the spacing and depth of the teeth gradually increase from one end of the three gripping claws 22 to the other end.

[0034] Because the spacing and depth of the teeth gradually increase from one end of the three clamping claws 22 to the other, the clamping opening can better match and clamp wires of different specifications, reducing the possibility of stripping due to mismatch between wire specifications and tooth spacing and depth. At the same time, because the controller 6 is used to sense the position of one end of the three clamping claws 22 on the inner arc surface of its adjacent clamping claws 22 and correspondingly control the three clamping claws 22 to apply different forces to the wire terminals, the clamping claws 22 can apply different clamping forces to different specifications of wires, which to a certain extent reduces the possibility of insufficient clamping force to tighten wires of different specifications or damage to wires due to excessive clamping force.

[0035] In this embodiment: the driving module includes a control unit, a sensing module, an encoder, and a comparison unit; The control unit is used to receive electrical signals from the execution unit and control the start and stop of the motor 27. The sensing module includes a torque sensor and a data transmission unit. The torque sensor is connected to the sliding rod 23, and the data transmission unit is used to receive the torque data from the torque sensor and then send the data signal to the comparison module. The encoder disk stores corresponding data information of the number of rotations and the torque applied. The encoder disk is connected to the sliding rod 23. During the rotation of the sliding rod 23, the encoder disk senses the number of rotations of the sliding rod 23, determines the torque data based on the number of rotations, and sends it to the comparison module. The comparison module compares the torque signal from the sensing module with the torque data converted by the encoder, limits the threshold of the difference between the two values, and controls the motor 27 to stop rotating when the two values ​​reach the threshold.

[0036] After the control unit receives the electrical signal from the execution unit, the clamping port and the coil end wire 7 are aligned. At this time, the control unit controls the support plate 21 to move towards the coil end wire 7 so that the coil end wire 7 can enter the clamping port. Then, the control unit controls the motor 27 to start. When the motor 27 starts and rotates forward, the ends of the three clamping claws 22 move closer to each other, so as to clamp the coil end wire 7. When the coil end wire 7 completes the twisting operation, the motor 27 starts and reverses, and the ends of the three clamping claws 22 move away from each other, so that the three clamping claws 22 release the clamping of the coil end wire 7 and return to their original positions, so that the conveyor belt 3 can transport the coil that has been twisted away, so that the twisting mechanism can continue to twist the next coil.

[0037] When one end of the three clamping claws 22 approaches each other, the three clamping claws 22 gradually move closer to the coil end wire 7 and make the coil end wire 7 to be twisted into a single strand. Since the corresponding data information of the number of rotations and the force is stored, the code disk is connected to the sliding rod 23. During the rotation of the sliding rod 23, the code disk senses the number of rotations of the sliding rod 23 and determines the torque data that the torque sensor should receive by the torque sensor through the number of rotations. In this way, the present invention can apply different pressures when twisting wires of different diameter specifications, so that the present invention can be adapted to twisting wires of various specifications. After the end wire 7 of the coil to be twisted is combined into one strand, the three clamping claws 22 continue to move closer to each other to apply pressure to the end wire 7 of the coil, reducing the possibility of the coil becoming loose and stripping during the twisting process. During the application of pressure, since the torque sensor is connected to the sliding rod 23, the reaction force of the end wire 7 of the coil on the clamping claws 22 acts on the sliding rod 23, thereby generating torque on the sliding rod 23. The comparison module dynamically compares the data of the torque sensor and the data signal of the code disk. When the data of the torque sensor and the data signal of the code disk are within the threshold range preset by the comparison module, the clamping is completed. The control unit can then control the motor 27 to stop rotating. Then, the control rotation unit controls the three clamping claws 22 to rotate around the center line of the three clamping claws 22 as the rotation center, thereby completing the twisting operation.

[0038] Specifically, the preset threshold range is a dynamic threshold range that varies depending on the specifications of the coil end wire 7.

[0039] Workflow Loading and Preparation: Secure the stator or other coil assembly to be twisted onto the conveyor belt 3. Manually or with auxiliary mechanisms, thread and secure each set of coil end wires 7 to be twisted into its designated slot 41 on the wire guide 4 and clamp them with wire clamps 42. The wire guide 4 ensures these wires are arranged with the correct spacing and position and transports them to the clamping station.

[0040] Automatic identification and positioning: The carrier equipped with the cable guide 4 moves with the conveyor belt 3 to the predetermined sensing area. The alignment module of the controller 6 senses the displacement duration of the holding rod 5 through the displacement sensing module, and calculates the moving distance of the cable guide 4 after contacting the holding rod 5 by converting the displacement duration and the rotation speed of the conveyor belt 3 through the conversion unit. Thus, the model or key dimensions of the current cable guide 4 are determined, and the precise output position of the wire is calculated according to the preset program.

[0041] Adaptive clamping: The alignment module drives the clamping mechanism 2 to move forward to a suitable coordinate. First, the drive module controls the three arc-shaped clamping claws 22 to open synchronously, forming an access space much larger than the diameter of the wire bundle. Next, the support plate 21 moves precisely to cover the wire bundle with the opening. Then, the drive module reverses, causing the three clamping claws 22 to close collaboratively according to the actual outer diameter of the wire, applying a moderate and uniform clamping force to the wire. The magnitude of this force can be controlled by the force sensor integrated in the clamping mechanism 2 or by a preset clamping stroke, avoiding damage to thin wires or failure to clamp thick wires.

[0042] Automatic wire twisting: After confirming that the clamping status is correct, the wire twisting module starts, causing the entire clamping claw 22 assembly (along with the end of the wire clamped in it) to rotate a specified number of times at a set speed and direction of rotation, thus completing the wire twisting.

[0043] Release and Reset: Twisting is complete, and the twisting module stops. The drive module reopens the gripper 22, releasing the formed terminal wire harness. The gripping mechanism 2 returns to its initial position. The conveyor belt 3 starts, transporting the completed component away and delivering the next component to be processed to the workstation, and the cycle begins again.

[0044] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A motor coil terminal twisting device, comprising a machine body, a clamping mechanism, a conveyor belt, a wire guide, and a controller, wherein the clamping mechanism is connected to the machine body and is used to clamp and twist the coil end wires, the wire guide is connected to the conveyor belt and is used for separating and guiding the coil end wires, and the controller is used to control the clamping mechanism to clamp and twist the coil end wires on the wire guide, characterized in that: The clamping mechanism includes a support plate and three clamping claws arranged in a ring around the center line of the support plate. The three clamping claws are all arc-shaped and their inner arc surfaces surround each other to form a clamping opening. One end of any clamping claw can slide along the arc length of its adjacent clamping claw to connect to the inner arc surface of the adjacent clamping claw. All three clamping claws can slide to connect to the support plate. The support plate can slide to connect to the machine body in a direction toward or away from the conveyor belt. The controller includes an alignment module, a drive module, and a twisting module. The alignment module is electrically connected to the support plate and the wire guide. The alignment module is used to control the movement of the support plate so that the clamping port is aligned with the end wire of the coil of the wire guide. After the clamping port is aligned with the end wire of the coil of the wire guide, the alignment module sends an electrical signal to the drive module. The drive module is electrically connected to the clamping claws. After receiving the electrical signal from the alignment module, the drive module drives one end of each of the three clamping claws to slide along the arc length direction of its corresponding clamping claw. The wire twisting module is used to control the three clamping claws to rotate around the center line of the three clamping claws after clamping the end wire of the coil.

2. The motor coil terminal twisting device according to claim 1, characterized in that: The alignment module includes a support rod, a displacement sensing unit, and a conversion unit; the support rod is arranged perpendicular to the conveyor belt and can be slidably connected to the machine body in the direction toward or away from the conveyor belt; the end of the support rod away from the conveyor belt is elastically connected to the machine body; the end face of the support rod near the conveyor belt is inclined along the conveying direction of the conveyor belt to form an inclined surface, and the inclined surface supports the cable guide. The displacement sensing unit is connected to the abutment rod and senses the duration of displacement of the abutment rod along its length. After the displacement is sensed, it controls the conveyor belt to stop conveying and sends the duration data to the conversion module. The conversion unit stores conveyor belt speed data and cable guide specification data. After receiving the duration data sent by the displacement sensing unit, it calculates the length of the cable guide using the conveyor belt speed data and duration data, determines the cable guide specification information based on the length of the cable guide, and sends it to the execution unit. The execution unit receives the specifications of the wire guide to determine the wire guide position at the end of the coil, controls the support plate to move so that the clamping port is aligned with the wire guide at the end of the coil, and sends an electrical signal to the drive module.

3. The motor coil terminal twisting device according to claim 2, characterized in that: The upper end face of the cable guide is recessed to form multiple slots perpendicular to the conveyor belt. Each slot connects to the two side walls of the cable guide facing and away from the support plate. Rotating rods are connected to the opposite side walls of each slot along a direction perpendicular to the side walls. The cable guide also includes multiple cable clamps, each corresponding to one of the slots. The two sides of each cable clamp are connected to the rotating rods connected to the corresponding side walls of the slot. A first pole piece is provided on the side of the abutment rod opposite the inclined surface, and a second pole piece is connected to the side of the cable guide away from the conveyor belt's direction of movement. The first and second pole pieces are connected to allow the rotating rod to be electrically connected to the execution unit. The execution unit controls the rotation of the rotating rod when the support plate does not correspond to the slot.

4. The motor coil terminal twisting device according to claim 2, characterized in that: The inner arc surfaces of the three gripping claws are all concave inward to form sliding grooves, and the ends of the adjacent gripping claws of the three gripping claws can be slidably connected to the sliding grooves; the side of the three gripping claws facing the support plate is concave inward to form grooves, and the support plate is connected to three sliding rods in a direction perpendicular to the support plate, and the three sliding rods correspond one-to-one with the grooves of the three gripping claws. The groove sidewalls of the three gripping claws are all provided with teeth. The drive module includes gears and a drive unit. There are three gears, which are connected one-to-one to the sliding rods of the three gripping claws, and each gear meshes with one-to-one with the three teeth. The drive unit is used to drive the gears to rotate.

5. The motor coil terminal twisting device according to claim 4, characterized in that: It also includes an internal gear ring, which is coaxially arranged with the support disk and slidably connected to the support disk. The internal gear ring meshes with the gears of the three clamping claws. It also includes a motor, which is connected to the support disk. The output end of the motor is connected to any one of the three gears.

6. The motor coil terminal twisting device according to claim 5, characterized in that: The inner surfaces of the three gripping claws are provided with teeth, and the spacing and depth of the teeth gradually increase from one end of the three gripping claws to the other end.

7. A motor coil terminal twisting device according to claim 6, characterized in that: The drive module includes a control unit, a sensing module, a code disk, and a comparison unit; The control unit is used to receive electrical signals from the execution unit and control the start and stop of the motor; The sensing module includes a torque sensor and a data transmission unit. The torque sensor is connected to the sliding rod, and the data transmission unit is used to receive the torque data from the torque sensor and then send the data signal to the comparison module. The encoder disk stores corresponding data information of the number of rotations and the torque applied. The encoder disk is connected to the sliding rod. During the rotation of the sliding rod, the encoder disk senses the number of rotations of the sliding rod, determines the torque data based on the number of rotations, and sends it to the comparison module. The comparison module compares the torque signal from the sensing module with the torque data converted by the encoder. It presets a threshold for the difference between the two values ​​and controls the motor to stop rotating when the two values ​​reach the threshold.

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