Electromagnetically-driven cooling type linear motor

Abstract

The utility model discloses an electromagnetically driven cooling type linear motor, which comprises a box body, a cover plate and a motor main body, the cover plate is connected with the box body, the motor main body is arranged in the box body, two ends of the box body are provided with heat dissipation plates, the heat dissipation plates are provided with a plurality of fixing holes, the heat dissipation plates are provided with a first heat dissipation fan, and the first heat dissipation fan is provided with a second heat dissipation fan. The first cooling fan is installed on the hole wall of the fixing hole. The cover plate is provided with a heat dissipation mechanism, and the heat dissipation mechanism is used for the heat dissipation of the motor body. The heat dissipation plate is provided with a mounting assembly, and the mounting assembly is used for fixing the heat dissipation plate; during heat dissipation, a plurality of fixing holes are formed in the heat dissipation plates arranged at the two ends of the box body, a first heat dissipation fan is installed, the first heat dissipation fan operates to generate forced air flow, and heat generated by the motor main body due to the electromagnetic effect and current passing through the coil in the operation process is rapidly taken away and discharged out of the box body; and the heat dissipation mechanism arranged on the cover plate further enhances the heat dissipation capability.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to an electromagnetically driven cooled linear motor. Background Technology

[0002] An electromagnetically driven linear motor is a type of motor that directly converts electrical energy into linear motion using electromagnetic principles. Its structure mainly consists of a stator (usually a magnetic track) and a mover (usually a coil or permanent magnet). Thrust is generated through the electromagnetic interaction between the two, eliminating the need for traditional mechanical transmission devices such as ball screws or gears. This enables efficient and precise linear motion, making it widely used in high-speed, high-precision industrial applications.

[0003] A search revealed that CN205647229U discloses a coreless linear motor, including a motor stator with a U-shaped cross-section. Magnet groups are respectively provided on two opposite side walls inside the opening of the motor stator. A motor mover is inserted into the corresponding opening of the motor stator between the two magnet groups. The motor mover is provided with a coil group that can drive it to slide along the axial direction of the motor stator. The coil group includes inner and outer U-shaped coil groups arranged along the axial direction of the motor stator. The opening ends of the inner and outer U-shaped coil groups are opposite to each other and staggered. The two ends of the outer U-shaped coil group extend into the opening of the corresponding inner U-shaped coil group, and the two ends of the inner U-shaped coil group extend into the opening of the corresponding outer U-shaped coil group.

[0004] However, the above technical solution has the following problems: When the linear motor is working, its high efficiency makes it easy to generate a lot of heat, which leads to an increase in the internal temperature of the motor, and thus the motor is prone to damage after long-term use. Utility Model Content

[0005] This invention provides an electromagnetically driven, cooled linear motor, which solves the problem that existing linear motors, due to their high efficiency, easily generate a lot of heat during operation, leading to an increase in the internal temperature of the motor and subsequent damage after prolonged use.

[0006] This utility model provides the following technical solution:

[0007] An electromagnetically driven cooled linear motor includes a housing, a cover plate, and a motor body. The cover plate is connected to the housing, and the motor body is located inside the housing. Heat sinks are provided at both ends of the housing, and each heat sink has several fixing holes. A cooling fan is installed on the heat sink and mounted on the wall of each fixing hole. A heat dissipation mechanism is provided on the cover plate for dissipating heat from the motor body. A mounting assembly is provided on the heat sink for fixing the heat sink.

[0008] In a further technical solution, the heat dissipation mechanism includes heat dissipation fins, a second heat dissipation fan, and a mounting bracket. The mounting bracket is bolted to the heat dissipation plate, and the bottom surface of the mounting bracket abuts against the cover plate. The heat dissipation fins are mounted on the mounting bracket, and the second heat dissipation fan is mounted on the mounting bracket and located on the heat dissipation fins.

[0009] In a further technical solution, the two heat sinks are fixedly connected by a horizontal column, and the heat sink extends inward to form a support plate, which is used to support the housing.

[0010] In a further technical solution, the mounting assembly includes a vertical plate and a horizontal plate. The vertical plate is fixedly connected to the support plate, and the horizontal plate is fixedly connected to the vertical plate. The horizontal plate is provided with a plurality of spiral holes, which can be used to connect to external devices.

[0011] In a further technical solution, the motor body includes a slide rail assembly, which is installed inside the housing. The housing contains a magnetic rail and a mover slidably connected to the magnetic rail. The slide rail assembly is slidably connected to a slide table, which is fixedly connected to the mover. A shaft is provided at one end of the slide table, and the slide table and the shaft are detachably connected. The housing has a clearance hole through which the shaft passes, and the shaft is slidably connected to the wall of the clearance hole. The shaft is used to drive the workpiece to move.

[0012] A further technical solution includes a circuit board on the housing, an absolute reading head on the circuit board, an absolute grating ruler above the absolute reading head, a mounting plate on the slide, the absolute grating ruler mounted on the mounting plate, and the absolute reading head used to read the value of the absolute grating ruler.

[0013] In a further technical solution, the wall of the clearance hole is coated with a lubricating coating.

[0014] In a further technical solution, a magnetic spring clamping block and a constant force spring are provided at one end of the box body. One end of the constant force spring is fixedly connected to the slide table, and the other end of the constant force spring is connected to the magnetic spring clamp.

[0015] In a further technical solution, a guide cylinder is provided on the slide, the magnetic spring is fixedly connected to the guide cylinder, and the guide cylinder is fixedly connected to the slide.

[0016] In a further technical solution, the slide rail assembly includes a guide rail and a slider, and an anti-collision post is provided on one side of the guide rail, wherein the anti-collision post is a flexible cylinder.

[0017] In this invention, during heat dissipation, several fixing holes are provided on the heat dissipation plates at both ends of the housing, and a cooling fan is installed thereon. When the cooling fan operates, it generates forced airflow, which quickly removes the heat generated by the electromagnetic effect and the current passing through the coil during the operation of the motor body and exhausts it to the outside of the housing. At the same time, the heat dissipation mechanism on the cover plate further enhances the heat dissipation capacity. The cooling fan and the heat dissipation mechanism dissipate heat from the side and top simultaneously, ensuring that heat does not accumulate inside the housing and avoiding performance degradation or component damage due to overheating. Through the synergistic effect of the cooling fan and the heat dissipation mechanism, the operating temperature of the motor body can be effectively controlled within a safe range, greatly improving heat dissipation efficiency, preventing electromagnetic performance degradation or insulation material aging caused by high temperature, significantly extending the service life of the linear motor, and reducing the possibility of mechanical fatigue or electrical failure caused by thermal stress. This makes it particularly suitable for industrial scenarios that require long-term continuous operation or high-load work. Attached Figure Description

[0018] Figure 1 : A three-dimensional structural diagram of this utility model.

[0019] Figure 2 The present utility model Figure 1 Enlarged view of part A.

[0020] Figure 3 : Structural diagram of the box body, cover plate and motor body of this utility model.

[0021] Figure 4 : A three-dimensional structural diagram of the box body and the motor body of this utility model.

[0022] Figure 5 Partial structural diagram of this utility model.

[0023] Figure 6 This utility model Figure 5 Enlarged view of part B.

[0024] Reference numerals: 1. Box body; 2. Slide rail assembly; 201. Guide rail; 202. Slider; 3. Magnetic rail; 4. Mover; 5. Slide table; 6. Shaft bar; 7. Alternating hole; 8. Circuit board; 10. Absolute grating ruler; 11. Mounting plate; 12. Magnetic spring clamping block; 13. Constant force spring; 14. Guide cylinder; 16. Anti-collision post one; 17. Cooling fan one; 19. Cover plate; 20. Heat sink plate; 21. Fixing hole; 22. Heat dissipation mechanism; 221. Heat dissipation fin; 222. Cooling fan two; 223. Mounting bracket; 23. Mounting assembly; 231. Vertical plate; 232. Horizontal plate; 233. Spiral hole; 24. Horizontal column; 25. Support plate; Detailed Implementation

[0025] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0026] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0027] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0028] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0029] References to "one embodiment" or "some embodiments" as used in this specification mean that one or more embodiments of the present invention include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0030] Example 1

[0031] refer to Figures 1-6This utility model discloses an electromagnetically driven cooled linear motor, comprising: a housing 1, a cover plate 19, and a motor body. The cover plate 19 is connected to the housing 1, specifically, the cover plate 19 and the housing 1 are bolted together. The motor body is located inside the housing 1. Heat dissipation plates 20 are provided at both ends of the housing 1. The heat dissipation plates 20 have several fixing holes 21. A cooling fan 17 is provided on the heat dissipation plates 20 and is installed on the wall of the fixing holes 21. A heat dissipation mechanism 22 is provided on the cover plate 19 for dissipating heat from the motor body. A mounting assembly 23 is provided on the heat dissipation plates 20 for fixing the heat dissipation plates 20.

[0032] Specifically, it should be noted that both the housing 1 and the cover plate 19 are horizontally arranged. In this embodiment, the two heat dissipation plates 20 are connected together by a crossbar 24. During assembly, the housing 1 and the cover plate 19 are first opened, the motor body is placed inside, and then the cover plate 19 is bolted to the housing 1. After that, the housing 1 is inserted between the two heat dissipation plates 20, with both heat dissipation plates 20 abutting against both sides of the housing 1. At this time, the operator can fix the heat dissipation plates 20 using the mounting component 23, thereby fixing the housing 1 and the cover plate 19. Then, the cooling fan 17 and the heat dissipation mechanism 22 are installed, or the cooling fan 17 and the heat dissipation mechanism 22 are installed on the heat dissipation plates 20 in advance. When dissipating heat, the heat dissipation plates 20 at both ends of the housing 1 are provided with several fixing holes 21, and the cooling fan 17 is installed thereon. When the cooling fan 17 runs, it generates forced heat dissipation. The airflow rapidly carries away the heat generated by the electromagnetic action and current passing through the coils during the operation of the motor body, expelling it outside the housing 1. At the same time, the heat dissipation mechanism 22 set on the cover plate 19 further enhances the heat dissipation capacity. The cooling fan 17 and the heat dissipation mechanism 22 dissipate heat from the side and top simultaneously, ensuring that heat does not accumulate inside the housing 1 and avoiding performance degradation or component damage due to overheating. Through the synergistic effect of the cooling fan 17 and the heat dissipation mechanism 22, the operating temperature of the motor body can be effectively controlled within a safe range, greatly improving heat dissipation efficiency, preventing electromagnetic performance degradation or insulation material aging caused by high temperature, significantly extending the service life of the linear motor, and reducing the possibility of mechanical fatigue or electrical failure caused by thermal stress. This makes it particularly suitable for industrial scenarios that require long-term continuous operation or high-load work.

[0033] In this embodiment, the heat dissipation mechanism 22 includes heat dissipation fins 221, a second heat dissipation fan 222, and a mounting bracket 223. The mounting bracket 223 is mounted on the heat dissipation plate 20 by bolts. The bottom surface of the mounting bracket 223 abuts against the cover plate 19. The heat dissipation fins 221 are mounted on the mounting bracket 223. The second heat dissipation fan 222 is mounted on the mounting bracket 223 and is located on the heat dissipation fins 221.

[0034] Specifically, the airflow generated by the operation of the cooling fan 222 quickly removes heat from the heat dissipation fins 221, thereby effectively reducing the temperature of the motor body, ensuring stable performance of the motor body under high load, and extending its service life. At the same time, the sturdy structure of the mounting bracket 223 enhances the overall reliability and ease of maintenance, making it suitable for industrial applications that require efficient heat dissipation.

[0035] In this embodiment, the two heat sinks 20 are fixedly connected by four horizontal columns 24. The heat sinks 20 extend inward to support the support plate 25, which is used to support the box body 1. The support plate 25 and the horizontal columns 24 cooperate to stabilize the position of the box body 1 and the cover plate 19 again.

[0036] In this embodiment, the mounting component 23 includes a vertical plate 231 and a horizontal plate 232. The vertical plate 231 is fixedly connected to the support plate 25, and the horizontal plate 232 is fixedly connected to the vertical plate 231. The horizontal plate 232 is provided with a plurality of spiral holes 233, which can be used to connect to external devices.

[0037] In this embodiment, the motor body includes a slide rail assembly 2, which is installed inside a housing 1. A magnetic rail 3 and a mover 4 slidably connected to the magnetic rail 3 are disposed inside the housing 1. The magnetic rail 3 inside the housing 1 can generate an electromagnetic field through an energized coil. The generated magnetic force can be controlled by adjusting the magnitude and direction of the current. The mover 4 can slide on the magnetic rail 3. When current passes through the magnetic rail 3, the interaction force between the generated magnetic field and the mover 4 causes the mover 4 to move along the magnetic rail 3. In this embodiment, the magnetic rail 3 includes two magnetic yokes and two left and right plates. The two ends of the magnetic yokes are respectively connected to the left and right plates. The slide rail assembly 2 is equipped with neatly arranged magnets; the slide rail assembly 2 is located on one side of the magnetic yoke, and the slide rail assembly 2 is slidably connected to the slide table 5. Specifically, the slide rail assembly 2 includes a guide rail 201 and a slider 202, the guide rail 201 and the slider 202 are slidably connected, the slider 202 is provided with the slide table 5, the slide table 5 is fixedly connected to the mover 4, so that the movement of the mover 4 directly drives the movement of the slide table 5, one end of the slide table 5 is provided with a shaft 6, the slide table 5 and the shaft 6 are detachably connected, the box body 1 is provided with a clearance hole 7, the shaft 6 passes through the clearance hole 7, the shaft 6 is slidably connected to the hole wall of the clearance hole 7, and the shaft 6 is used to drive the workpiece to move.

[0038] Specifically, the operator generates an inductance line through the magnetic rail 3, and adjusts the magnetic force generated by the magnetic rail 3 by adjusting the current flowing through the magnetic rail 3. Then, the mover 4 moves under the action of the magnetic force, which drives the slide table 5 to move on the slide rail assembly 2. At the same time, the movement of the slide table 5 drives the shaft 6 to move. The shaft 6 is slidably connected to the wall of the clearance hole 7. Through the shaft 6, the movement of the slide table 5 can be directly transmitted to the workpiece, realizing high-precision movement of the workpiece.

[0039] In this embodiment, a circuit board 8 is provided on the housing 1, an absolute value reading head is provided on the circuit board 8, an absolute grating ruler 10 is provided above the absolute value reading head, a mounting plate 11 is provided on the slide 5, the absolute grating ruler 10 is mounted on the mounting plate 11, and the absolute value reading head is used to read the value of the absolute grating ruler 10.

[0040] Specifically, when circuit board 8 is powered on, the light source in the absolute value reading head begins to emit light. The light passes through the transparent and opaque areas of the absolute grating ruler 10, forming an interference pattern. The photodetector in the absolute value reading head receives the light passing through the absolute grating ruler 10 and generates a corresponding electrical signal according to the change in light intensity. The circuit inside the absolute value reading head decodes the received electrical signal and extracts the corresponding absolute position value on the absolute grating ruler 10.

[0041] In this embodiment, the wall of the clearance hole 7 is coated with a lubricating coating, such as a polytetrafluoroethylene (PTFE) coating or a nano-lubricant. The PTFE coating has excellent low friction characteristics and corrosion resistance, while the nano-lubricant can reduce friction and improve lubrication at the microscopic level. The use of the lubricating coating reduces the coefficient of friction between the shaft 6 and the wall of the clearance hole 7, thereby reducing motion resistance and improving sliding efficiency. In high-precision applications, wear can affect the positioning accuracy and service life of the linear module. The use of a lubricating coating can effectively reduce wear and extend the service life of the equipment.

[0042] In this embodiment, a magnetic spring clamping block 12 and a constant force spring 13 are provided at one end of the box body 1. One end of the constant force spring 13 is fixedly connected to the slide table 5, and the other end of the constant force spring 13 is connected to the magnetic spring clamp. Furthermore, in this embodiment, a guide cylinder 14 is provided on the slide table 5. The magnetic spring is fixedly connected to the guide cylinder 14, and the guide cylinder 14 is fixedly connected to the slide table 5.

[0043] In this embodiment, a first anti-collision post 16 is provided on one side of the guide rail 201. The first anti-collision post 16 is a flexible cylinder. A second anti-collision post is provided on one side of the mover 4. The second anti-collision post is fixedly connected to the housing 1. In this embodiment, a limit block is provided on one side of the shaft 6. The limit block is located on the side of the shaft 6 away from the avoidance hole 7. The limit block is fixedly connected to the housing 1. The limit block is used to limit the movement position of the shaft 6 away from the avoidance hole 7.

[0044] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. In the absence of conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An electromagnetically driven cooling linear motor, characterized by, The utility model provides a motor cooling device, including box (1), cover (19) and motor main body, cover (19) is connected with box (1), motor main body is located in box (1) inside, box (1) both ends are provided with heat dissipation plate (20), heat dissipation plate (20) is opened with a plurality of fixed hole (21), heat dissipation plate (20) is provided with heat dissipation fan no.

2. An electromagnetically driven cooling linear motor according to claim 1, characterized in that, The heat dissipation mechanism (22) includes a heat dissipation fin (221), a heat dissipation fan (222), and a mounting rack (223). The mounting rack (223) is installed on the heat dissipation plate (20) through bolts. The bottom surface of the mounting rack (223) abuts against the cover (19). The heat dissipation fin (221) is installed on the mounting rack (223). The heat dissipation fan (222) is installed on the mounting rack (223), and the heat dissipation fan (222) is located on the heat dissipation fin (221).

3. An electromagnetically driven cooling linear motor according to claim 1, characterized in that, Two heat dissipation plates (20) are fixedly connected through a cross column (24). The heat dissipation plate (20) extends inwardly to support a support plate (25). The support plate (25) is used to support the box (1).

4. An electromagnetically driven cooling linear motor according to claim 3, characterized in that, The mounting assembly (23) includes a vertical plate (231) and a horizontal plate (232). The vertical plate (231) is fixedly connected with the support plate (25). The horizontal plate (232) is fixedly connected with the vertical plate (231). A plurality of screw holes (233) are arranged on the horizontal plate (232). The screw holes (233) can be used to connect with external devices.

5. An electromagnetically driven cooling linear motor according to claim 1, characterized in that, The motor main body includes a sliding rail assembly (2). The sliding rail assembly (2) is installed in the box (1). The box (1) is provided with a magnetic rail (3) and a mover (4) slidably connected with the magnetic rail (3). The sliding rail assembly (2) is slidably connected with a sliding table (5). The sliding table (5) is fixedly connected with the mover (4). One end of the sliding table (5) is provided with a shaft rod (6). The sliding table (5) is detachably connected with the shaft rod (6). The box (1) is provided with an avoidance hole (7). The shaft rod (6) passes through the avoidance hole (7). The shaft rod (6) is slidably connected with the hole wall of the avoidance hole (7). The shaft rod (6) is used to move a workpiece.

6. An electromagnetically driven cooling linear motor according to claim 5, characterized in that The box (1) is provided with a circuit board (8). An absolute value reading head is arranged on the circuit board (8). An absolute grating ruler (10) is arranged above the absolute value reading head. The sliding table (5) is provided with a mounting plate (11). The absolute grating ruler (10) is installed on the mounting plate (11). The absolute value reading head is used to read the value of the absolute grating ruler (10).

7. An electromagnetically driven cooling linear motor according to claim 5, characterized in that, The hole wall of the avoidance hole (7) is coated with a lubricating coating.

8. An electromagnetically driven cooling linear motor according to claim 5, characterized in that, The box body (1) is provided with a magnetic force spring clamping block (12) and a constant force spring (13) at one end, one end of the constant force spring (13) is fixedly connected with the sliding table (5), and the other end of the constant force spring (13) is connected with the magnetic force spring clamping.

9. An electromagnetically driven refrigerated linear motor according to claim 8, characterized in that The sliding table (5) is provided with a guide cylinder (14), the magnetic force spring is fixedly connected with the guide cylinder (14), and the guide cylinder (14) is fixedly connected with the sliding table (5).

10. An electromagnetically driven cooling linear motor according to claim 5, characterized in that, The sliding rail assembly (2) comprises a guide rail (201) and a sliding block (202), one side of the guide rail (201) is provided with a first anti-collision column (16), and the first anti-collision column (16) is a soft cylinder.

Images