A linear motor structure

Abstract

The utility model provides a kind of linear motor structure, it is related to linear motor technical field, comprising: stator module, multiple stator modules head-tail series connection, form stator unit;Each stator module includes stator mounting bracket and multiple stators, multiple stators are arranged on stator mounting bracket along the circumferential direction of stator mounting bracket;Mover module, mover module includes mover mounting bracket and multiple movers;Mover mounting bracket is sleeved on stator mounting bracket, and both are slidably connected;Multiple movers are arranged on the mover mounting bracket along the circumferential direction of mover mounting bracket, and multiple movers and multiple stators are set one by one, to promote the mover module to slide along the stator unit.The utility model is connected in series by multiple stator modules, and each stator module includes multiple stators, to realize the significant enhancement of thrust.

Description

Technical Field

[0001] This utility model relates to the field of linear motor technology, and more specifically, to a linear motor structure. Background Technology

[0002] A linear motor is a device that directly converts electrical energy into linear motion mechanical energy. It boasts advantages such as simple structure, fast response speed, and high precision, and is widely used in industrial automation, CNC machine tools, robotics, aerospace, and other fields. However, traditional linear motors have certain limitations in terms of thrust and speed, especially in high-load, high-speed applications, where their performance often falls short of requirements.

[0003] Technical defects of existing linear motors: Existing single-drive linear motors are limited by a single magnetic circuit coupling architecture. In order to increase thrust, the size or current of the mover coil must be increased, which leads to a surge in inductance and response delay. Dynamic performance is sacrificed in exchange for thrust, forming a vicious cycle of "thrust-speed-accuracy" that cannot be achieved simultaneously. Utility Model Content

[0004] The main objective of this invention is to provide a linear motor structure and winding method to solve the technical problem in the prior art where increasing the thrust of a linear motor affects its dynamic performance.

[0005] To achieve the above objectives, according to one aspect of the present invention, a linear motor structure is provided, comprising:

[0006] Multiple stator modules are sequentially connected along a preset direction to form a stator unit; each stator module includes a stator mounting bracket and multiple stators, which are arranged circumferentially on the stator mounting bracket.

[0007] The moving part module includes a moving part mounting bracket and a plurality of moving parts; the moving part mounting bracket is sleeved on the stator mounting bracket and slidably disposed on the stator mounting bracket; the plurality of moving parts are arranged circumferentially on the moving part mounting bracket, and the plurality of moving parts are arranged one-to-one with the plurality of stators to push the moving part module to slide in the stator unit along the preset direction.

[0008] Applying this technical solution, the linear motor structure includes a stator unit and a mover module. The stator unit is formed by multiple stator modules connected in series. Each stator module is provided with a stator mounting bracket and multiple stators arranged circumferentially. The mover module includes a mover mounting bracket and multiple movers. The mover mounting bracket is sleeved and slidably connected to the stator mounting bracket. Each mover is set in a one-to-one correspondence with the stator and works together to generate thrust.

[0009] The linear motor structure of this utility model utilizes a series design of multiple stator modules and a structure in which multiple stators are arranged circumferentially in each stator module. The moving module is fitted onto the stator module, with each stator module serving as a driving unit. Multiple driving units are connected in series, resulting in a significant increase in thrust. This design resolves the contradiction between thrust and dynamic performance in traditional linear motors. Through the collaborative work of multiple driving units, a significant increase in thrust is achieved, along with a simultaneous improvement in dynamic response speed and positioning accuracy.

[0010] In some embodiments, the linear motor structure includes:

[0011] Isolator: An isolator is provided between two adjacent stator modules. The isolator is made of magnetic shielding material.

[0012] In this embodiment, an isolator is introduced into the linear motor structure, located between two adjacent stator modules and made of magnetically shielding material. The key to this design is that the isolator, made of magnetically shielding material, effectively isolates magnetic field interference between stator modules, ensuring the independence and operational stability of the stator within each module. The isolator not only physically separates the stators within each module but also optimizes the magnetic field distribution within the linear motor. This prevents cross-interference of magnetic lines of force when multiple stator modules work collaboratively, ensuring that each stator module provides high thrust while maintaining dynamic response speed and operational accuracy. This separation strategy is particularly important for multi-drive linear motors, as it not only improves the overall thrust output but also achieves longer service life and higher operational accuracy by preventing magnetic field interference. In other embodiments not shown in the figures, the shape and size of the isolator can be adjusted according to actual needs to adapt to different application environments.

[0013] In some embodiments, limit baffles are provided at both ends of the stator unit, and the edges of the limit baffles extend toward the side of the moving sub-module away from the stator unit to block the moving sub-module.

[0014] Preferably, since the moving part mounting bracket is sleeved outside the moving part mounting bracket, the edge of the limiting baffle extends toward the side of the moving part module away from the stator unit, and the side is the circumferential side of the stator unit. This can improve the limiting effect of the limiting baffle on the moving part module and prevent the moving part module from flying out from both ends of the stator unit.

[0015] In this embodiment, limiting baffles are configured at both ends of the stator unit. The edges of these limiting baffles extend outward beyond the sides of the moving submodule, thereby physically restricting the movement range of the moving submodule. The design of the limiting baffles ensures the safety of the linear motor during operation, preventing "runaway" phenomena caused by loss of control, i.e., the moving submodule continuing to move beyond the predetermined stroke range. In this way, not only is the internal structure of the moving submodule protected from damage, but the safety of the working area is also maintained. In actual operation, when the moving submodule approaches the ends of its stroke, the limiting baffles will act as a stop, immediately preventing further movement of the moving submodule and ensuring the stability and reliability of the entire system under high speed and high load. In addition, the precise installation of the limiting baffles also has a positive impact on the overall accuracy of the motor, making the motion more controllable and improving the applicability of the linear motor in precision mechanical applications.

[0016] In some embodiments, a plurality of moving and stator receiving cavities are provided between the moving part mounting bracket and the stator mounting bracket. The moving and stator receiving cavities are not interconnected and are arranged along the circumference of the moving part mounting bracket and the circumference of the stator mounting bracket. Each moving and stator receiving cavity contains a stator and a moving part.

[0017] This embodiment achieves a significant increase in motor thrust by setting the stator and mover in each independent moving-stator housing cavity, ensuring the efficient and stable operation of the linear motor; the moving-stator housing cavities are not interconnected, avoiding magnetic field interference between each group of moving-stator.

[0018] In some embodiments, the sidewall of the stator mounting bracket is recessed in the direction away from the mover mounting bracket to form at least a portion of the mover receiving cavity;

[0019] And / or, the sidewall of the mover mounting bracket protrudes in a direction away from the stator mounting bracket to form at least a portion of the mover-stator receiving cavity.

[0020] In this embodiment, the sidewall of the stator mounting bracket is recessed away from the mover mounting bracket to form a moving-stator receiving cavity, and the stator mounting bracket independently forms the moving-stator receiving cavity. The design of the stator mounting bracket sinking to form an independent space for the moving-stator receiving cavity reduces the space occupied by the moving-stator receiving space, and also saves the material of the mover mounting bracket, thus reducing costs.

[0021] The sidewall of the mover mounting bracket protrudes away from the stator mounting bracket, forming independent moving and stator receiving cavities. This structural design reduces the manufacturing difficulty of the stator mounting bracket.

[0022] The sidewall of the stator mounting bracket is recessed in the direction away from the mover mounting bracket, forming part of the moving-stator receiving cavity; the sidewall of the mover mounting bracket protrudes in the direction away from the stator mounting bracket, forming the remaining part of the moving-stator receiving cavity. The moving-stator receiving space is formed by the stator mounting bracket and the mover mounting bracket together, thus ensuring the strength and stability of both the stator mounting bracket and the mover mounting bracket.

[0023] In some embodiments, the moving stator receiving cavity includes a pair of first receiving cavities, each pair of first receiving cavities being symmetrically arranged relative to a first symmetrical face of the stator mounting bracket; and / or,

[0024] The moving stator receiving cavity includes a pair of second receiving cavities, each pair of second receiving cavities being symmetrically arranged relative to the second symmetrical face of the stator mounting bracket.

[0025] Preferably, the first symmetry plane is either a horizontal plane or a vertical plane, and the second symmetry plane is either a horizontal plane or a vertical plane. This structural design makes the movement of the moving module smoother and ensures the stability of the entire linear motor.

[0026] The stator and moving stator housings are designed with a pair of first and second housings, which are symmetrically arranged with respect to the first and second symmetry planes of the stator mounting bracket, respectively. This structural layout not only ensures the overall balance and symmetry of the linear motor, but also optimizes the force distribution, making the force on the motor more uniform during operation, thereby improving operating efficiency and stability.

[0027] In some embodiments, the plurality of stators include a first stator and a second stator, and the plurality of movers include a first mover and a second mover; each first receiving cavity is provided with a first stator and a first mover; each second receiving cavity is provided with a second stator and a second mover; the width of the first stator is greater than the width of the second stator; the width of the first mover is greater than the width of the second mover;

[0028] And / or,

[0029] Each pair of first receiving cavities is respectively located above and below the stator mounting bracket; each pair of second receiving cavities is respectively located on the left and right sides of the stator mounting bracket.

[0030] The first stator and the first mover are arranged along the long side of the stator mounting bracket, while the second stator and the second mover are arranged along the wide side of the stator mounting bracket. This configuration optimizes the force distribution and helps to ensure high thrust output while making the operation of the mover module more stable.

[0031] Each pair of first receiving cavities is located above and below the stator mounting bracket, while each pair of second receiving cavities is located on the left and right sides of the stator mounting bracket. In this way, the internal structural layout of the motor is optimized, and the thrust is evenly distributed, thus improving the overall performance of the linear motor.

[0032] In some embodiments, each stator mounting bracket is provided with a through groove, and a coolant pipe is provided in the through groove. The coolant pipes of adjacent stator mounting brackets are connected to form a cooling pipeline. The two ends of the cooling pipeline are respectively connected to a coolant inlet and a coolant outlet.

[0033] Each stator mounting bracket has a through slot containing coolant pipes. The coolant pipes between adjacent stator mounting brackets are interconnected, forming a continuous cooling pipeline. The beginning and end of the cooling pipeline are connected to the coolant inlet and outlet, respectively, forming a closed-loop cooling system. This design achieves active heat dissipation management for the linear motor. Through continuous coolant circulation, it effectively removes the large amount of heat generated during motor operation, preventing overheating and ensuring long-term stable operation. It also improves the overall efficiency and service life of the motor. Even under prolonged high-speed operation, it effectively disperses heat and avoids overheating, providing a more reliable and high-performance power solution for equipment in industrial automation, CNC machine tools, and robotics. In other embodiments not shown, the layout and shape of the coolant pipes can be adjusted according to the specific stator design and cooling requirements to optimize the cooling effect, ensuring that each local area is adequately cooled, further enhancing the system's heat dissipation capacity and reliability. In summary, by constructing an integrated cooling pipeline, this embodiment significantly improves the heat dissipation efficiency of the linear motor, overcomes the heat dissipation bottleneck caused by a single cooling method in traditional motors, and provides key technical support for achieving high performance and high efficiency of linear motors.

[0034] In some embodiments, the coolant pipes of two adjacent stator mounting brackets are connected by a sleeve; and / or,

[0035] Both the stator and the mover are arranged around the periphery of the through slot.

[0036] The coolant pipes of two adjacent stator mounting brackets are sealed and connected by sleeves, forming a continuous coolant circulation path. This ensures that the coolant flows evenly throughout the entire motor structure, effectively removing the heat generated during operation and maintaining the motor's temperature stability under high load conditions, preventing performance degradation or damage due to overheating. Furthermore, both the stator and mover are arranged around the periphery of the through slot. This structural arrangement allows for uniform heat dissipation from multiple stators and movers, improving the overall heat dissipation performance. This design overcomes the bottleneck of low cooling efficiency in traditional linear motors, enhancing the competitiveness and reliability of linear motors in demanding applications.

[0037] In some embodiments, one of the stator mounting bracket and the mover mounting bracket is provided with a slide rail, and the other of the stator mounting bracket and the mover mounting bracket is provided with a protrusion, which is slidably connected to the slide rail.

[0038] A precise sliding connection is achieved between the stator mounting bracket and the mover mounting bracket through a combination of slide rails and protrusions. Specifically, the stator mounting bracket has slide rails, while the mover mounting bracket has protrusions that match the slide rails. The protrusions slide within the slide rails, ensuring smooth movement and precise positioning between the mover and stator modules. This connection method not only simplifies the assembly process and improves assembly efficiency but also ensures the stability and reliability of the linear motor under high-speed operation. In an alternative embodiment, the positions of the slide rails and protrusions can be interchanged; that is, the mover mounting bracket has slide rails, while the stator mounting bracket has protrusions, still achieving a precise sliding connection between the mover and stator. Regardless of the connection scheme adopted, the smoothness and symmetry of the linear motor during operation are ensured, effectively avoiding thrust reduction and accuracy loss caused by improper assembly or unstable movement, providing a solid structural foundation for the high-performance operation of the linear motor. In addition, this design facilitates the maintenance and repair of the linear motor. The combination of the protrusion and the slide ensures that the mover and stator do not interfere with each other during disassembly and assembly, while maintaining the overall performance of the system and improving the service life and operating accuracy of the linear motor.

[0039] The beneficial effects of the linear motor structure provided by this utility model are as follows:

[0040] This utility model's linear motor structure, through the series design of multiple stator modules and the circumferential arrangement of multiple stators within each stator module, with a moving module externally mounted on top of each stator module, achieves a significant enhancement in thrust while maintaining excellent dynamic response performance, resolving the contradiction between thrust, speed, and accuracy in traditional linear motors. Furthermore, by adding coolant pipes within the stator mounting bracket, a highly efficient cooling system is formed, effectively preventing overheating during high-speed operation and significantly improving the motor's operational stability and service life. Isolators made of magnetically shielding material are placed between adjacent stator modules, ensuring electromagnetic independence between each drive unit, avoiding magnetic field interference, and improving the overall system performance. The design of the limit baffle effectively prevents the linear motor from "runaway" during operation, enhancing safety. The symmetrical design of the moving and stator housing cavities results in more uniform force distribution and better balance performance, further improving the motor's operating accuracy. This utility model's modular stator unit design allows for the assembly and stacking of the appropriate number of stator modules according to actual needs, facilitating easy assembly and disassembly with high precision. Overall, the linear motor structure of this invention has significant improvements in thrust, heat dissipation, precision, and safety. It is suitable for high-load, high-speed, and high-precision applications, such as industrial automation, precision equipment, and aerospace, and has broad market prospects and application value. Attached Figure Description

[0041] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0042] Figure 1 A schematic diagram of the overall structure of an embodiment of a linear motor structure according to the present invention is shown;

[0043] Figure 2 A schematic cross-sectional view of an embodiment of a linear motor structure according to the present invention is shown. Figure 1 ;

[0044] Figure 3 A longitudinal cross-sectional schematic diagram of an embodiment of a linear motor structure according to the present invention is shown.

[0045] The above figures include the following reference numerals:

[0046] 100. Stator module; 110. Stator; 111. First stator; 112. Second stator; 130. Stator mounting bracket; 131. Through slot; 132. Coolant pipe; 133. Slide rail; 134. Coolant inlet; 135. Coolant outlet; 200. Stator unit; 210. Limiting baffle; 300. Mover module; 310. Mover; 311. First mover; 312. Second mover; 320. Mover mounting bracket; 321. Protrusion; 400. Moving-stator receiving cavity; 410. First receiving cavity; 420. Second receiving cavity. Detailed Implementation

[0047] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0048] Please refer to Figures 1 to 3 The first embodiment of this utility model provides a linear motor structure, comprising multiple stator modules 100, which are sequentially connected along a preset direction to form a stator unit 200; each stator module 100 includes a stator mounting bracket 130 and multiple stators 110, which are arranged circumferentially on the stator mounting bracket 130.

[0049] The mover module 300 includes a mover mounting bracket 320 and a plurality of movers 310. The mover mounting bracket 320 is sleeved on the stator mounting bracket 130 and slidably disposed on the stator mounting bracket 130. The plurality of movers 310 are arranged circumferentially on the mover mounting bracket 320, and the plurality of movers 310 are correspondingly disposed one-to-one with the plurality of stators 110, so as to push the mover module 300 to slide in the stator unit 200 along the preset direction.

[0050] Using the technical solution of this embodiment, the linear motor structure includes a stator unit 200 and a mover module 300. The stator unit 200 is formed by multiple stator modules 100 connected in series. Each stator module 100 is provided with a stator mounting bracket 130 and multiple stators 110 arranged circumferentially. The mover module 300 includes a mover mounting bracket 320 and multiple movers 310. The mover mounting bracket 320 is sleeved and slidably connected to the stator mounting bracket 130. Each mover 310 is arranged in a one-to-one correspondence with a stator 110, and they work together to generate thrust.

[0051] The linear motor structure of this utility model utilizes a series design of multiple stator modules 100 and a structure in which multiple stators 110 are arranged circumferentially in each stator module 100. The moving module 300 is fitted onto the stator module 100, with each stator module 100 serving as a driving unit. The multiple driving units are connected in series, resulting in a significant enhancement of thrust. This design resolves the contradiction between thrust and dynamic performance in traditional linear motors. Through the collaborative work of multiple driving units, a significant enhancement of thrust is achieved, along with a simultaneous improvement in dynamic response speed and positioning accuracy.

[0052] Furthermore, in this embodiment, the linear motor structure includes: an isolator, wherein an isolator is provided between two adjacent stator modules 100, and the isolator is made of a magnetic shielding material.

[0053] In this embodiment, an isolator is introduced into the linear motor structure, located between two adjacent stator modules 100, and made of magnetically shielding material. The key to this design is that the isolator, made of magnetically shielding material, effectively isolates magnetic field interference between stator modules, ensuring the independence and operational stability of the stator 110 within each stator module 100. The isolator not only achieves physical separation of the stator 110 within each stator module 100 in its structure, but also optimizes the magnetic field distribution inside the linear motor. This allows multiple stator modules 100 to avoid cross-interference of magnetic lines of force when working collaboratively, thus ensuring that each stator module 100 provides high thrust while maintaining dynamic response speed and operational accuracy. This separation strategy is particularly important for multi-drive linear motors, as it not only improves the overall thrust output of the linear motor but also achieves longer service life and higher operational accuracy by preventing magnetic field interference. In other embodiments not shown in the figures, the shape and size of the isolator can be adjusted according to actual needs to adapt to different application environment requirements.

[0054] Furthermore, in this embodiment, limit baffles 210 are provided at both ends of the stator unit 200. The edges of the limit baffles 210 extend toward the side of the moving sub-module 300 away from the stator unit 200 to block the moving sub-module 300. Preferably, since the moving sub-mounting bracket 320 is sleeved on the outside of the moving sub-mounting bracket 320, the edges of the limit baffles 210 extend toward the side of the moving sub-module 300 away from the stator unit 200, which is the circumferential side of the stator unit 200. This can improve the limiting effect of the limit baffles 210 on the moving sub-module 300 and prevent the moving sub-module 300 from flying out from both ends of the stator unit 200.

[0055] In this embodiment, limiting baffles 210 are configured at both ends of the stator unit 200. The edges of these limiting baffles 210 extend outward beyond the sides of the moving submodule 300, thereby physically limiting the movement range of the moving submodule 300. The design of the limiting baffles 210 ensures the safety of the linear motor during operation, preventing "runaway" phenomena caused by loss of control, i.e., the moving submodule 300 continuing to move beyond the predetermined stroke range. In this way, not only is the internal structure of the moving submodule 300 protected from damage, but the safety of the working area is also maintained. In actual operation, when the moving submodule 300 approaches the two ends of its stroke, the limiting baffles 210 will act as a blocking force, immediately stopping the further movement of the moving submodule 300, ensuring the stability and reliability of the entire system under high speed and high load. In addition, the precise installation of the limiting baffles 210 also has a positive impact on the overall accuracy of the motor, making the movement more controllable and improving the applicability of the linear motor in precision mechanical applications.

[0056] Furthermore, in this embodiment, a plurality of moving and stator receiving cavities 400 are provided between the moving part mounting bracket 320 and the stator mounting bracket 130. The moving and stator receiving cavities 400 are not interconnected with each other. The plurality of moving and stator receiving cavities 400 are arranged along the circumference of the moving part mounting bracket 320 and the circumference of the stator mounting bracket 130. Each moving and stator receiving cavity 400 is provided with a stator 110 and a moving part 310.

[0057] In this embodiment, multiple moving-stator receiving cavities 400 are provided between the mover mounting bracket 320 and the stator mounting bracket 130. These cavities are arranged circumferentially along both the mover mounting bracket 320 and the stator mounting bracket 130. Each moving-stator receiving cavity 400 contains a stator 110 and a mover 310. By placing the stator 110 and mover 310 within each independent moving-stator receiving cavity 400, this embodiment achieves a significant increase in motor thrust, ensuring the efficient and stable operation of the linear motor. Furthermore, the moving-stator receiving cavities 400 are not interconnected, avoiding magnetic field interference between each set of moving and stators.

[0058] Furthermore, in this embodiment, the sidewall of the stator mounting bracket 130 is recessed in the direction away from the mover mounting bracket 320 to form at least a portion of the moving stator receiving cavity 400; and / or, the sidewall of the mover mounting bracket 320 protrudes in the direction away from the stator mounting bracket 130 to form at least a portion of the moving stator receiving cavity 400.

[0059] In this embodiment, the sidewall of the stator mounting bracket 130 is recessed away from the mover mounting bracket 320 to form a moving stator receiving cavity 400, which is an independent moving stator receiving cavity 400. The design of the stator mounting bracket 130 sinking to form an independent space moving stator receiving cavity 400 reduces the space occupied by the moving stator receiving cavity 400, and also saves the material of the mover mounting bracket 320, thus reducing costs.

[0060] The sidewall of the mover mounting bracket 320 protrudes away from the stator mounting bracket 130, independently forming a mover-stator receiving cavity 400. This structural design reduces the processing difficulty of the stator mounting bracket 130.

[0061] The sidewall of the stator mounting bracket 130 is recessed in the direction away from the mover mounting bracket 320, forming a part of the moving-stator receiving cavity 400; the sidewall of the mover mounting bracket 320 protrudes in the direction away from the stator mounting bracket 130, forming the remaining part of the moving-stator receiving cavity 400. The moving-stator receiving cavity 400 is formed jointly by the stator mounting bracket 130 and the mover mounting bracket 320, thus ensuring the strength and stability of both the stator mounting bracket 130 and the mover mounting bracket 320.

[0062] Furthermore, in this embodiment, the moving stator receiving cavity 400 includes a pair of first receiving cavities 410, each pair of first receiving cavities 410 being symmetrically arranged relative to a first symmetrical face of the stator mounting bracket 130; and / or, the moving stator receiving cavity 400 includes a pair of second receiving cavities 420, each pair of second receiving cavities 420 being symmetrically arranged relative to a second symmetrical face of the stator mounting bracket 130.

[0063] Preferably, the first symmetry plane is one of a horizontal plane and a vertical plane, and the second symmetry plane is the other of a horizontal plane and a vertical plane. This structural design makes the movement of the moving submodule 300 smoother and ensures the stability of the entire linear motor.

[0064] In this embodiment, the stator housing 400 is designed with a pair of first housing 410 and second housing 420, which are symmetrically arranged with respect to the first and second symmetry planes of the stator mounting bracket 130, respectively. This structural layout not only ensures the overall balance and symmetry of the linear motor, but also optimizes the force distribution, making the force on the motor more uniform during operation, thereby improving operating efficiency and stability. The symmetrically arranged housings can accommodate multiple sets of stators, enabling the collaborative work of multiple stator modules 100, significantly enhancing the thrust of the linear motor, while maintaining dynamic response and accuracy at high speeds, thus resolving the inherent contradiction between thrust, speed, and accuracy in traditional single-drive linear motors.

[0065] Further, in this embodiment, the plurality of stators 110 include a first stator 111 and a second stator 112, and the plurality of movers 310 include a first mover 311 and a second mover 312; each first receiving cavity 410 is provided with a first stator 111 and a first mover 311; each second receiving cavity 420 is provided with a second stator 112 and a second mover 312; the width of the first stator 111 is greater than the width of the second stator 112; the width of the first mover 311 is greater than the width of the second mover 312; and / or, each pair of first receiving cavities 410 is respectively disposed above and below the stator mounting bracket 130; each pair of second receiving cavities 420 is respectively disposed on the left and right sides of the stator mounting bracket 130.

[0066] In this embodiment, multiple stators 110 are divided into first stators 111 and second stators 112, and multiple movers 310 correspondingly include first movers 311 and second movers 312. The first stators 111 and first movers 311 are housed within a first receiving cavity 410, while the second stators 112 and second movers 312 are located within a second receiving cavity 420. Notably, the widths of the first stators 111 and first movers 311 are greater than the widths of the second stators 112 and second movers 312. The first stators 111 and first movers 311 are arranged along the long side of the stator mounting bracket 130, while the second stators 112 and second movers 312 are arranged along the wide side of the stator mounting bracket 130. This configuration optimizes the force distribution, which is beneficial for ensuring high thrust output while maintaining more stable operation of the mover module 300.

[0067] In addition, each pair of first receiving cavities 410 is respectively located above and below the stator mounting bracket 130, and each pair of second receiving cavities 420 is located on the left and right sides of the stator mounting bracket 130. In this way, the internal structural layout of the motor is optimized, and the thrust is evenly distributed, thus improving the overall performance of the linear motor.

[0068] Furthermore, in this embodiment, as Figure 2 and Figure 3 As shown, each stator mounting bracket 130 has a through groove 131, and a coolant pipe 132 is provided in the through groove 131. The coolant pipes 132 of adjacent stator mounting brackets 130 are connected to form a cooling pipeline. The two ends of the cooling pipeline are respectively connected to a coolant inlet 134 and a coolant outlet 135.

[0069] In this embodiment, each stator mounting bracket 130 has a through groove 131, inside which a coolant pipe 132 is arranged. The coolant pipes 132 between adjacent stator mounting brackets 130 are interconnected, forming a continuous cooling pipeline. The beginning and end of the cooling pipeline are connected to the coolant inlet 134 and the coolant outlet 135, respectively, forming a closed-loop cooling system. This design realizes active heat dissipation management of the linear motor. Through continuous circulation of coolant, it effectively removes a large amount of heat generated by the motor during operation, avoiding overheating and ensuring long-term stable operation of the motor, while improving the overall efficiency and service life of the motor. Even under long-term high-speed operation, it can effectively disperse heat and avoid overheating, providing a more reliable and high-performance power solution for equipment in fields such as industrial automation, CNC machine tools, and robotics. In other embodiments not shown, the layout and shape of the coolant pipes 132 can be adjusted according to the specific design of the stator and cooling requirements to optimize the cooling effect, ensure that each local area is adequately cooled, and further enhance the heat dissipation capacity and reliability of the system. In summary, by constructing an integrated cooling pipeline, this embodiment significantly improves the heat dissipation efficiency of the linear motor, overcomes the heat dissipation bottleneck caused by a single cooling method in traditional motors, and provides key technical support for achieving high performance and high efficiency of linear motors.

[0070] Furthermore, in this embodiment, the coolant pipes 132 of two adjacent stator mounting brackets 130 are connected by a sleeve 220; and / or, the stator 110 and the mover 310 are both arranged around the periphery of the through groove 131.

[0071] Preferably, the stator mounting bracket 130 has a quadrilateral cross-section, the through slot 131 is located at the center of the quadrilateral, and multiple stators 110 and multiple movers 310 are arranged along the periphery of the quadrilateral. The width of both stators 110 and movers 310 extends along the side lines of the quadrilateral. This structural arrangement enables the multiple stators 110 and multiple movers 310 to dissipate heat evenly, thereby improving the heat dissipation performance of the entire structure.

[0072] In this embodiment, the coolant pipes 132 of two adjacent stator mounting brackets 130 are sealed and connected by sleeves 220, forming a continuous coolant circulation path. This ensures that the coolant can flow evenly throughout the entire motor structure, effectively removing the heat generated during operation and maintaining the motor's temperature stability under high load conditions, thus preventing performance degradation or damage due to overheating. Furthermore, the stator 110 and mover 310 are arranged around the periphery of the through slot 131. This structural arrangement allows for uniform heat dissipation from the multiple stators 110 and multiple movers 310, improving the overall heat dissipation performance. This design overcomes the bottleneck of low cooling efficiency in traditional linear motors, achieving a perfect combination of high thrust, high precision, and efficient heat dissipation, enhancing the competitiveness and reliability of linear motors in demanding applications. Of course, in other embodiments not shown in the figures, the connection method of the coolant pipes 132 can be diversified, such as using flange connections or welding, as long as the smooth flow of coolant and the system's sealing are ensured. This adapts to different working environments and cooling requirements, further expanding the application scope of this invention. Similarly, the specific layout of the stator 110 and the mover 310 can be adjusted according to actual needs, such as by using staggered arrangement or dense distribution, to optimize the thrust density and power efficiency of the motor, and achieve more efficient energy conversion and better dynamic performance.

[0073] Furthermore, in this embodiment, one of the stator mounting bracket 130 and the mover mounting bracket 320 is provided with a slide rail 133, and the other of the stator mounting bracket 130 and the mover mounting bracket 320 is provided with a protrusion 321, the protrusion 321 being slidably connected to the slide rail 133.

[0074] In this embodiment, a precise sliding connection is achieved between the stator mounting bracket 130 and the mover mounting bracket 320 through a combination of a slide rail 133 and a protrusion 321. Specifically, the stator mounting bracket 130 is provided with a slide rail 133, while the mover mounting bracket 320 is provided with a protrusion 321 that matches the slide rail 133. The protrusion 321 slides within the slide rail 133, ensuring smooth movement and precise positioning between the mover module 300 and the stator module 100. This connection method not only simplifies the assembly process and improves assembly efficiency but also ensures the stability and reliability of the linear motor under high-speed operation. In an alternative embodiment, the positions of the slide rail 133 and the protrusion 321 can be interchanged, i.e., the mover mounting bracket 320 is provided with a slide rail 133, while the stator mounting bracket 130 is provided with a protrusion 321, still achieving a precise sliding connection between the mover and the stator. Regardless of the connection scheme adopted, the smoothness and symmetry of the linear motor during operation are ensured, effectively avoiding thrust reduction and accuracy loss caused by improper assembly or unstable movement, thus providing a solid structural foundation for the high-performance operation of the linear motor. Furthermore, this design facilitates the maintenance and repair of the linear motor. The combination of protrusion 321 and slide rail 133 ensures that the mover and stator do not interfere with each other during disassembly and assembly, while maintaining the overall performance of the system and improving the service life and operating accuracy of the linear motor.

[0075] During the installation of the linear motor, firstly, multiple stator modules 100 are connected end-to-end to form a stator unit 200. Each stator module 100 has multiple stators 110 arranged circumferentially along the stator mounting bracket 130. Next, the mover module 300 is fitted onto the stator mounting bracket 130 via a mover mounting bracket 320. The mover mounting bracket 320 and the stator mounting bracket 130 are slidably connected via a slide rail 133 and a protrusion 321 to ensure smooth movement of the mover module 300. Multiple movers 310 are arranged circumferentially along the mover mounting bracket 320, corresponding one-to-one with the multiple stators 110, pushing the mover module 300 to slide along the stator unit 200.

[0076] When the motor is running, the coolant enters from the coolant inlet 134, flows through the coolant pipe 132 in the stator mounting bracket 130, and then forms a continuous cooling pipeline through the connection of the coolant pipes 132 of the adjacent stator mounting brackets 130, and finally flows out from the coolant outlet 135, carrying away the heat generated during the operation of the motor.

[0077] This utility model's linear motor structure, through the series design of multiple stator modules 100 and the circumferential arrangement of multiple stators 110 within each stator module 100, with a moving module 300 externally mounted on each stator module 100, achieves a significant enhancement in thrust while maintaining good dynamic response performance, resolving the contradiction between thrust, speed, and accuracy in traditional linear motors. Furthermore, by adding a coolant pipe 132 within the stator mounting bracket 130, a highly efficient cooling system is formed, effectively preventing overheating during high-speed operation and significantly improving the motor's operational stability and service life. Isolators made of magnetically shielding material are installed between adjacent stator modules 100, ensuring electromagnetic independence between each drive unit. The moving and stator housing cavities 400 are not interconnected, and each pair of moving and stators exists in an independent and relatively enclosed space, avoiding magnetic field interference and improving the overall system performance. The design of the limiting baffle 210 effectively prevents the linear motor from "running away" during operation, enhancing safety. The symmetrical design of the moving and stator housing 400 results in more uniform force distribution and better balance performance, further improving the motor's operating accuracy. The modular stator unit design of this invention allows for the assembly and stacking of a corresponding number of stator modules 100 according to actual needs, facilitating easy assembly and disassembly with high precision. Overall, the linear motor structure of this invention represents a significant improvement in thrust, heat dissipation, accuracy, and safety, making it suitable for high-load, high-speed, and high-precision applications such as industrial automation, precision equipment, and aerospace, with broad market prospects and application value.

[0078] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A linear motor structure, characterized in that, include: Multiple stator modules (100) are sequentially connected along a preset direction to form a stator unit (200); each stator module (100) includes a stator mounting bracket (130) and multiple stators (110), the multiple stators (110) being arranged circumferentially on the stator mounting bracket (130); The mover module (300) includes a mover mounting bracket (320) and a plurality of movers (310); the mover mounting bracket (320) is sleeved on the stator mounting bracket (130) and slidably disposed on the stator mounting bracket (130); Multiple movers (310) are arranged circumferentially along the mover mounting bracket (320), and the multiple movers (310) are correspondingly arranged with the multiple stators (110) to push the mover module (300) to slide along the preset direction in the stator unit (200).

2. The linear motor structure according to claim 1, characterized in that, The linear motor structure includes: An isolator is provided between two adjacent stator modules (100), the isolator being made of a magnetically shielding material.

3. The linear motor structure according to claim 1, characterized in that, Both ends of the stator unit (200) are provided with limit baffles (210), and the edges of the limit baffles (210) extend toward the side of the moving sub-module (300) away from the stator unit (200) to block the moving sub-module (300).

4. The linear motor structure according to claim 1, characterized in that, Multiple moving and stator receiving cavities (400) are provided between the moving part mounting bracket (320) and the stator mounting bracket (130). The moving and stator receiving cavities (400) are not interconnected. The multiple moving and stator receiving cavities (400) are arranged along the circumference of the moving part mounting bracket (320) and the circumference of the stator mounting bracket (130). Each moving and stator receiving cavity (400) is provided with the stator (110) and the moving part (310).

5. The linear motor structure according to claim 4, characterized in that, The sidewall of the stator mounting bracket (130) is recessed in a direction away from the mover mounting bracket (320) to form at least a portion of the moving-stator receiving cavity (400); and / or, The sidewall of the mover mounting bracket (320) protrudes in a direction away from the stator mounting bracket (130) to form at least a portion of the mover-stator receiving cavity (400).

6. The linear motor structure according to claim 4, characterized in that, The moving stator receiving cavity (400) includes a pair of first receiving cavities (410), each pair of first receiving cavities (410) being symmetrically arranged relative to a first symmetrical face of the stator mounting bracket (130); and / or, The moving stator receiving cavity (400) includes a pair of second receiving cavities (420), each pair of second receiving cavities (420) being symmetrically arranged relative to the second symmetrical face of the stator mounting bracket (130).

7. The linear motor structure according to claim 6, characterized in that, The plurality of stators (110) includes a first stator (111) and a second stator (112), and the plurality of movers (310) includes a first mover (311) and a second mover (312); each of the first receiving cavities (410) is provided with the first stator (111) and the first mover (311); each of the second receiving cavities (420) is provided with the second stator (112) and the second mover (312); the width of the first stator (111) is greater than the width of the second stator (112); the width of the first mover (311) is greater than the width of the second mover (312); and / or, Each pair of first receiving cavities (410) is respectively disposed above and below the stator mounting bracket (130); each pair of second receiving cavities (420) is respectively disposed on the left and right sides of the stator mounting bracket (130).

8. The linear motor structure according to claim 1, characterized in that, Each of the stator mounting brackets (130) is provided with a through groove (131), and a coolant pipe (132) is provided in the through groove (131). The coolant pipes (132) of adjacent stator mounting brackets (130) are connected to form a cooling pipeline. The two ends of the cooling pipeline are respectively connected to a coolant inlet (134) and a coolant outlet (135).

9. The linear motor structure according to claim 8, characterized in that, The coolant pipes (132) of two adjacent stator mounting brackets (130) are connected by a sleeve (220); and / or, Both the stator (110) and the mover (310) are arranged around the periphery of the through slot (131).

10. The linear motor structure according to claim 4, characterized in that, One of the stator mounting bracket (130) and the mover mounting bracket (320) is provided with a slide rail (133), and the other of the stator mounting bracket (130) and the mover mounting bracket (320) is provided with a protrusion (321), and the protrusion (321) is slidably connected to the slide rail (133).

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