Direct-current brushless rotor spinning rotor motor

Abstract

The utility model discloses a DC brushless rotor spinning rotor motor, which comprises a casing, a motor main shaft and a rotor, a stator assembly and a rotor assembly which are oppositely arranged inside and outside are installed inside the casing, the motor main shaft is arranged on the inner side of the casing, and the output end of the motor main shaft is coaxially connected with the rotor and used for driving the rotor to rotate. A supporting seat is arranged at the head of the machine shell, a cover seat is arranged on the supporting seat, a shaft of the direct-current brushless motor is connected with the rotor spinning rotor assembly, rotating power generated by the motor is transmitted to a rotor, the motor can accurately control the rotating speed by changing input voltage or current, and the requirements of different spinning technologies are met. And the device has the characteristics of high efficiency, quick response and high stability.

Description

Technical Field

[0001] The utility model relates to the technical field of spinning equipment, in particular to a DC brushless air spinning rotor motor. Background Art

[0002] Open-end spinning, also known as rotor spinning, is a spinning technology that uses airflow to draw, condense, and twist fiber slivers into yarn. Unlike traditional ring spinning, it does not require a spindle. Instead, the spinning process is accomplished through components such as a combing roller, a spinning rotor, and a false twist device. During open-end spinning, the combing roller grabs and combs the incoming sliver fibers, and the centrifugal force generated by its high-speed rotation ejects the fibers. The spinning rotor is a key component. The centrifugal force generated within the rotor expels air, and based on the principle of fluid pressure, the cotton fibers enter the airflow cup, forming a fiber stream that continuously moves along the inner wall of the cup. Characteristics of open-end spinning include high spinning speeds, large yarn reels, wide adaptability, and a simple mechanism. Because it does not require a spindle, ring, or traveler, it can significantly increase spun yarn production. The yarn structure of open-end spinning is fluffier than ring-spun yarn, making it more wear-resistant, uniform, and brightly colored, but it is relatively weaker. This type of yarn is primarily used in woven fabrics such as plain cloth, flannel, and knitwear.

[0003] In the open-end spinning process, the performance of the rotor drive plays a crucial role in spinning quality and efficiency. Traditional rotor drive structures have numerous drawbacks, such as high energy consumption, poor speed stability, high maintenance costs, and poor adaptability to different fibers. With the continuous advancement of textile technology, higher requirements are being placed on the rotor drive structure in open-end spinning components. These structures must feature high energy efficiency, precise speed regulation, stable operation, and easy maintenance to meet increasingly stringent production demands and quality standards. Utility Model Content

[0004] To solve the above technical problems, the present invention relates to a DC brushless air spinning rotor motor, which has a simple and reliable structure, effectively solves the above technical problems, and is suitable for popularization and use. To achieve the above purpose, the present invention is implemented through the following technical solutions:

[0005] A DC brushless air-spinning rotor motor comprises a housing, a motor main shaft, and a rotor. A stator assembly and a rotor, which are arranged oppositely inside and outside the housing, are mounted inside the housing. The motor main shaft is disposed inside the housing. The output end of the motor main shaft is coaxially connected to the rotor and is used to drive the rotor to rotate. A support seat is disposed at the head of the housing. A cover seat is disposed on the support seat. The stator assembly comprises an iron core and a winding. The iron core is formed by stacking silicon steel sheets. The rotor is cylindrical and made of permanent magnetic material. Multi-pole permanent magnets are evenly distributed on the rotor. The motor main shaft is made of alloy steel.

[0006] On the basis of the above scheme and as a preferred scheme of the above scheme: the rotor cup includes a cylindrical support part, a conical support part, a chassis, and a cup shell arranged in sequence from bottom to top, and the conical support part of the rotor cup is provided with a plurality of exhaust holes evenly spaced along the circumferential direction, and the exhaust holes are arranged obliquely downward and connect the inner cavity of the rotor cup with the outside.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: four bolt mounting columns are provided on the outside of the support seat, the inner holes of the bolt mounting columns are threaded holes, the cover seat is provided with bolt positioning sockets corresponding to the bolt mounting columns, the cover seat and the support seat are connected by bolts, a cavity is formed between the cover seat and the support seat, the cavity is connected to the exhaust hole, and a gap is left between the cover seat and the cup shell of the rotating cup.

[0008] On the basis of the above solution and as a preferred solution of the above solution: a bearing is provided inside the housing, and the motor main shaft and the bearing are coaxially matched for internal and external rotation.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: a cover plate is provided at the rear end of the casing, the cover plate is provided with three bolt mounting holes evenly spaced around the circumference, and the cover plate is connected to the casing by bolt connection.

[0010] Compared with the existing technology, the outstanding and beneficial technical effects of the present invention are: the shaft of the brushless DC motor is connected to the air-spinning rotor assembly, and the rotational power generated by the motor is transmitted to the rotor. The motor can accurately control the speed by changing the input voltage or current to meet the needs of different spinning processes, improve production efficiency and yarn quality, and has the characteristics of high efficiency, fast response and high stability. This patent adopts an energy-saving optimization design, including optimizing the electromagnetic design of the motor to improve the magnetic field utilization and energy conversion efficiency, using high-efficiency electronic components to reduce the power loss of the drive system, and having an intelligent speed regulation function to automatically adjust the rotor speed according to the requirements of the spinning process, thereby improving the flexibility and adaptability of the drive. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure;

[0012] Figure 2 It is a schematic diagram of the cross-sectional structure;

[0013] Figure 3 This is a schematic diagram of the rotating cup. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments. However, the specific implementation methods and embodiments described below are only for illustrative purposes and are not intended to limit the present invention.

[0015] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate directions or positional relationships based on the attached text. Figure 1 The directions or positional relationships shown are only for the convenience of describing the present invention, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0016] In the description of this application, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0017] In order to solve the above technical problems, Figure 1-3 As shown, the utility model designs a DC brushless air spinning rotor 3 motor, including a housing 1, a motor shaft 2, and a rotor 3. The housing 1 is internally installed with a stator assembly 4 and a rotor 5 arranged opposite to each other. The motor shaft 2 is arranged inside the housing 1. The stator assembly 4 includes an iron core, which is made of laminated silicon steel sheets. A plurality of windings are arranged on the iron core. In this embodiment, a three-phase symmetrical star connection method is preferably adopted. The rotor is cylindrical and made of permanent magnetic material. The rotor is evenly distributed with multi-pole permanent magnets. The motor shaft is made of alloy steel.

[0018] Based on electromagnetic principles such as the law of electromagnetic induction and Ampere's law, a current-carrying conductor is subject to a force in a magnetic field, and when a conductor moves in a magnetic field, an induced electromotive force is generated. When the stator winding of a brushless DC motor is energized, a rotating magnetic field is generated. The permanent magnets on the rotor are acted upon by this rotating stator magnetic field, generating torque, which in turn causes the rotor to rotate. This optimizes the motor's electromagnetic design, improves magnetic field utilization and energy conversion efficiency, and uses high-efficiency electronic components to reduce power loss in the drive system.

[0019] In addition, the motor is equipped with an advanced brushless DC drive control system. The system uses a microprocessor as the core to achieve precise control of the motor. The system detects the motor's speed, position, current and other parameters in real time through sensors, and adjusts the duty cycle and frequency of the drive signal according to the preset control algorithm to achieve smooth starting, speed regulation and braking of the motor. At the same time, the system has overcurrent, overvoltage, overheating and other protection functions to improve the reliability and safety of the motor. The motor has an intelligent speed regulation function, which automatically adjusts the rotor speed according to the requirements of the spinning process, minimizing energy consumption while ensuring spinning quality.

[0020] The output end of the motor main shaft 2 is coaxially connected to the rotor 3 and is used to drive the rotor 3 to rotate, which is convenient for the installation and disassembly of the rotor and can ensure the concentricity of the rotor and the rotating shaft. The shaft of the DC brushless motor is connected to the air-spinning rotor 3 assembly, and the rotational power generated by the motor is transmitted to the rotor 3, so that the rotor 3 rotates at high speed. The rotation speed of the rotor 3 is crucial to the quality and efficiency of air-spinning. The DC brushless motor can provide a stable and adjustable rotation speed. The rotor 3 in the air-spinning generates centrifugal force through high-speed rotation, so that the fiber forms a cohesive fiber ring in the rotor 3, thereby realizing spinning, simplifying the transmission structure, reducing energy loss, and improving spinning efficiency. The motor can accurately control the rotation speed by changing the input voltage or current to meet the needs of different spinning processes, improve production efficiency and yarn quality, and has the characteristics of high efficiency, fast response, and high stability.

[0021] Specifically, the rotor 3 includes a cylindrical support part 31, a conical support part 32, a chassis 33, and a cup shell 34 arranged in sequence from bottom to top. The conical support part 32 of the rotor cup 3 is provided with a plurality of exhaust holes 35 evenly spaced along the circumferential direction. The exhaust holes 35 are arranged at an angle downward and connect the inner cavity of the rotor cup 3 with the outside. The exhaust hole design of the rotor cup 3 helps to control the airflow inside the rotor cup 3, so that the fibers can flow and condense more smoothly in the rotor cup 3, thereby improving the quality of spinning. The exhaust holes of the rotor cup 3 are arranged at an angle downward, which helps to discharge impurities and short fibers in time, reduce the accumulation of impurities inside the rotor cup 3, and thus improve the cleanliness and quality of the yarn.

[0022] In addition, the head of the casing 1 is provided with a support seat 6, and a cover seat 7 is provided on the support seat 6. Four bolt mounting columns 8 are provided on the outside of the support seat 6. The inner holes of the bolt mounting columns 8 are threaded holes. The cover seat 7 is provided with bolt positioning sockets corresponding to the bolt mounting columns 8. The cover seat 7 and the support seat 6 are connected by bolts. The bolt connection forms a stable structure to ensure the stability and reliability of the rotor cup 3 motor at high speed operation. It is also convenient to disassemble and facilitate later maintenance. A cavity is formed between the cover seat 7 and the support seat 6, and the cavity is connected to the exhaust hole. There is a gap between the seat 7 and the cup shell 34 of the rotor 3. This design optimizes the flow path of the airflow, maintains the working environment of the rotor 3, and helps to form a stable airflow environment, so that the fibers can be guided and condensed more smoothly. It also helps to reduce the chaos and disordered movement of the fibers inside the rotor 3, and improve the efficiency and quality of spinning. In addition, it can reduce the interference of external airflow on the airflow inside the rotor 3 and maintain the stability of the airflow inside the rotor 3. This is very important for improving the uniformity of the yarn and reducing yarn defects. It can also reduce noise and flying flowers to a certain extent, and improve the working environment of the spinning workshop.

[0023] It is further preferred in this embodiment that a bearing 9 is provided inside the housing 1, and the motor main shaft 2 and the bearing 9 are coaxially rotated inward and outward. The presence of the bearing 9 significantly reduces the friction coefficient of the motor main shaft 2 during rotation, thereby reducing energy loss, improving the overall mechanical efficiency, providing stable support, ensuring the precise alignment of the motor main shaft 2 during high-speed operation, and reducing additional load and wear caused by shaft offset or vibration.

[0024] It is further preferred in this embodiment that a cover plate 10 is provided at the tail end of the casing 1, and the cover plate 10 is provided with three bolt mounting holes evenly spaced around the circumferential direction. The cover plate 10 is connected to the casing 1 by bolt connection. The cover plate 10 can protect the stator and rotor inside the motor, prevent dust, moisture and other impurities from entering the interior of the motor, thereby avoiding degradation or damage to the motor performance. By being connected to the casing 1 by bolt connection, the cover plate 10 and the casing 1 form a complete sealing structure, thereby enhancing the structural stability of the entire motor. The provision of the cover plate 10 makes the maintenance and inspection of the motor more convenient, because the cover plate 10 can be directly removed to access the internal components of the motor.

[0025] It is worth noting that the technical features such as the rotor assembly and stator assembly involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control method and spatial layout method of these technical features can be selected by conventional means in the field and should not be regarded as the inventive point of this utility model patent. This utility model patent will not be further elaborated.

[0026] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made by technicians in the relevant technical field based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A brushless DC air spinning rotor motor, characterized by: It includes a casing, a motor main shaft, and a rotor. The inside of the casing is installed with a stator assembly and a rotor arranged opposite to each other. The motor main shaft is arranged on the inner side of the casing. The output end of the motor main shaft is coaxially connected to the rotor and is used to drive the rotor to rotate. The head of the casing is provided with a support seat, and a cover seat is provided on the support seat. The stator assembly includes an iron core and a winding. The iron core is made of laminated silicon steel sheets. The rotor is cylindrical and made of permanent magnetic material. Multi-pole permanent magnets are evenly distributed on the rotor. The motor main shaft is made of alloy steel.

2. A brushless DC air spinning rotor motor according to claim 1, characterized in that: The rotor cup includes a cylindrical support portion, a conical support portion, a chassis, and a cup shell arranged in sequence from bottom to top. The conical support portion of the rotor cup is provided with a plurality of exhaust holes evenly spaced along the circumferential direction. The exhaust holes are arranged obliquely downward and connect the inner cavity of the rotor cup with the outside.

3. The brushless DC air spinning rotor motor according to claim 2, characterized in that: Four bolt mounting columns are provided on the outer side of the support seat, the inner holes of the bolt mounting columns are threaded holes, the cover seat is provided with bolt positioning sockets corresponding to the bolt mounting columns, the cover seat and the support seat are connected by bolts, a cavity is formed between the cover seat and the support seat, the cavity is connected to the exhaust hole, and a gap is left between the cover seat and the cup shell of the rotating cup.

4. The brushless DC air spinning rotor motor according to claim 3, characterized in that: A bearing is provided inside the housing, and the motor main shaft and the bearing are coaxially matched for internal and external rotation.

5. The brushless DC air spinning rotor motor according to claim 4, characterized in that: A cover plate is provided at the rear end of the housing. The cover plate is provided with three bolt mounting holes evenly spaced around the circumference. The cover plate is connected to the housing by means of bolts.

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