Coreless linear motor employing heat radiation fins for heat radiation
By using the design of heat dissipation fins and thermal conduction plates in the iron-free linear motor, the problems of heat dissipation and wear resistance are solved, efficient heat dissipation and extended service life are achieved, and the performance requirements of high-precision equipment are met.
Patent Information
- Application Number
- CN202422215849.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-09-10
AI Technical Summary
The existing iron-free linear motors have poor heat dissipation functions, poor wear resistance and easy corrosion, which affects their application in high-precision equipment.
The heat dissipation fins are used for heat dissipation. By setting a heat dissipation plate and a heat conduction plate on the back iron of the stator, the nickel layer is combined to increase wear resistance and corrosion resistance, and improve heat conduction and heat dissipation efficiency.
It effectively improves the heat dissipation efficiency and life of iron-free linear motors, ensuring high positioning accuracy and high output power in high precision equipment.
Smart Images
Figure CN223218959U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coreless linear motors, in particular to an ironless linear motor which adopts heat dissipation fins for heat dissipation. Background Art
[0002] Ironless linear motors are widely used in high-precision equipment due to their advantages such as high positioning accuracy and low thrust fluctuation. Taking the working requirements of the scanning axis of wafer inspection equipment as an example, the entire working process is divided into acceleration, scanning and deceleration sections. In the scanning section, the ironless linear motor works in a no-load or light-load state, requiring small speed fluctuation, fast speed and high positioning accuracy; in the acceleration and deceleration sections, the ironless linear motor works in a high overload state, requiring the motor peak thrust to be large enough to achieve greater acceleration and improve work efficiency. In the whole process, the temperature rise of the ironless linear motor is required to be low, so, The ability to simultaneously meet multiple extreme performance indicators such as high thrust density, low thrust fluctuation, and low temperature rise is a major demand for coreless linear motors used in high-precision equipment; however, existing traditional coreless linear motors have problems with poor heat loss conduction of the coils and low heat dissipation efficiency. On the other hand, the coreless linear motors in the prior art have the problem of poor wear resistance, which greatly reduces the life of the motor. On the other hand, the shell of the coreless linear motors in the prior art is often corroded during use; therefore, there is an urgent need for an ironless linear motor that uses heat dissipation fins for heat dissipation to solve the current problem. Utility Model Content
[0003] In order to solve the above problems, the utility model proposes an ironless linear motor that uses cooling fins for heat dissipation, which effectively solves the problems of poor heat dissipation function, poor wear resistance and corrosion of ironless linear motors in the prior art, and effectively improves the heat dissipation efficiency and life of the ironless linear motor.
[0004] To achieve the above-mentioned purpose, the utility model proposes the following technical solutions: a coreless linear motor that uses heat dissipation fins for heat dissipation, comprising a stator back iron and a mover group that moves relative to the stator back iron; a pair of stator magnets that cooperate with the mover group are provided on the inner surface of the stator back iron, and the stator magnets are symmetrically arranged on both sides of the mover group; the stator magnets are composed of a plurality of N-pole magnets and S-pole magnets alternating arrays; the mover group comprises a mover housing and a plurality of mover coils; a plurality of winding grooves that cooperate with the mover coils are provided on the mover housing; the mover coils are all wound on the winding grooves of the mover housing; a pair of heat dissipation groups are provided on the stator back iron, and the heat dissipation groups are symmetrically arranged on the upper and lower sides of the stator back iron; the heat dissipation group is composed of a plurality of heat dissipation plate arrays; the heat dissipation plate comprises a heat dissipation fin and a heat conducting plate; the heat conducting plate is located between the stator back iron and the stator magnet; one end of the heat dissipation fin is fixed to the heat conducting plate; the other end of the heat dissipation fin is exposed on the outside of the stator back iron.
[0005] Furthermore, the heat conducting plate is a solid plate; the heat dissipation fin exposed on the outer side of the stator back iron is provided with a heat dissipation through hole.
[0006] Furthermore, there are at least three mover coils on the mover housing.
[0007] Furthermore, the upper and lower end surfaces of the heat conducting plate are in contact with the stator back iron and the stator magnet respectively.
[0008] Furthermore, the magnetic poles of the stator magnets corresponding to the upper and lower parts of the stator back iron are in opposite directions.
[0009] Furthermore, the surfaces of the stator back iron and the stator magnet are both plated with a nickel layer; the surfaces of the heat dissipation fins and the heat conduction plate are also plated with a nickel layer.
[0010] Furthermore: the stator back iron is U-shaped.
[0011] Compared with the prior art, the gain effects of the present invention are:
[0012] Compared with the existing technology, under the condition of the stator magnet, the arrangement of the mover coil wound on the mover housing utilizes the Lorentz principle to generate power; at the same time, under the premise that the volume of the motor remains unchanged, more mover coils are wound on the mover housing to increase the output power of the motor; thereby ensuring the normal high-speed operation of the motor; on the other hand, the arrangement of the heat sink greatly increases the heat generated during the movement of the mover group; the solid plate heat conduction plate and the heat dissipation fin plate with heat dissipation holes effectively ensure the heat conduction efficiency, and also greatly improve the heat dissipation efficiency; the arrangement of the nickel layer increases the wear resistance and corrosion resistance of the utility model; and greatly extends the service life of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a three-dimensional diagram of the structure of the utility model.
[0014] Figure 2 It is a three-dimensional diagram of the local structure of the utility model.
[0015] Figure 3 This is a partial structural diagram of the utility model.
[0016] Figure 4 It is an enlarged view of the local structure of the utility model.
[0017] In the figure: 1. stator back iron, 2. stator magnet, 3. heat dissipation fin, 5. rotor coil, 6. rotor housing, 7. heat conduction plate. DETAILED DESCRIPTION
[0018] A coreless linear motor that uses cooling fins for heat dissipation is characterized in that it includes a stator back iron 1 and a mover group that moves relative to the stator back iron 1; a pair of stator magnets 2 that cooperate with the mover group are provided on the inner surface of the stator back iron 1, and the stator magnets 2 are symmetrically arranged on both sides of the mover group; the stator magnets 2 are composed of a plurality of alternating arrays of N-pole magnets and S-pole magnets; the mover group includes a mover housing 6 and a plurality of mover coils 5; the mover housing 6 is provided with a plurality of winding grooves that cooperate with the mover coils 5; the mover coils 5 are all wound on the winding grooves of the mover housing 6; a pair of heat dissipation groups are provided on the stator back iron 1, and the heat dissipation groups are symmetrically arranged on the upper and lower sides of the stator back iron 1; the heat dissipation group is composed of a plurality of heat dissipation plate arrays; the heat dissipation plate includes a heat dissipation fin 3 and a heat conducting plate 7; the heat conducting plate 7 is located between the stator back iron 1 and the stator magnet 2; one end of the heat dissipation fin 3 is fixed to the heat conducting plate 7; and the other end of the heat dissipation fin 3 is exposed on the outside of the stator back iron 1.
[0019] like Figure 1 and 3 As shown: when the utility model is working, the mover group slides in the stator back iron 1. During this process, the mover shell 6 drives the multiple mover coils 5 thereon to slide between the stator magnets 2. More mover coils 5 are wound around the mover shell 6, which increases the output power of the motor; the setting of the heat sink greatly improves the heat conduction efficiency and heat dissipation efficiency of the utility model; it effectively solves the problems of poor heat dissipation function, poor wear resistance and corrosion of the coreless linear motor in the prior art, and effectively improves the heat dissipation efficiency and life of the coreless linear motor.
[0020] The heat conducting plate 7 is a solid plate; the heat dissipation fins 3 are exposed on the outer side of the stator back iron 1 and are provided with heat dissipation holes; there are at least three rotor coils 5 on the rotor housing 6; the upper and lower end surfaces of the heat conducting plate 7 are in contact with the stator back iron 1 and the stator magnet 2 respectively; the magnetic poles of the stator magnets 2 corresponding to the upper and lower parts of the stator back iron 1 are in opposite directions; the surfaces of the stator back iron 1 and the stator magnet 2 are both plated with a nickel layer; the surfaces of the heat dissipation fins 3 and the heat conducting plate 7 are also plated with a nickel layer; the stator back iron 1 is U-shaped.
[0021] like Figure 2 、 3 As shown in FIG4 : the setting of the heat conducting plate 7 as a solid plate ensures its heat conduction efficiency; the setting of the heat dissipation through-holes greatly improves the heat dissipation efficiency; the setting of the nickel layer increases the wear resistance and corrosion resistance of the utility model; and greatly extends the service life of the utility model.
[0022] The working process of this utility model is:
[0023] like Figure 1 、 2, 3 and 4: When the utility model is working, the mover group slides in the stator back iron 1. During this process, the mover shell 6 drives the multiple mover coils 5 thereon to slide between the stator magnets 2. More mover coils 5 are wound around the mover shell 6, which increases the output power of the motor; the setting of the heat sink greatly improves the heat conduction efficiency and heat dissipation efficiency of the utility model; the setting of the heat conducting plate 7 as a solid plate ensures its heat conduction efficiency; the setting of the heat dissipation through-hole greatly improves the heat dissipation efficiency; the setting of the nickel layer increases the wear resistance and corrosion resistance of the utility model; it effectively solves the problems of poor heat dissipation function, poor wear resistance and corrosion of the coreless linear motor in the prior art, and effectively improves the heat dissipation efficiency and life of the coreless linear motor.
[0024] Finally, it should be noted that terms such as "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate positions or relationships based on the positions or relationships shown in the accompanying drawings. These terms are intended solely to facilitate and simplify the description of the present invention and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0025] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.
Claims
1. An ironless linear motor using heat dissipation fins, characterized in that: The invention comprises a stator back iron (1) and a mover group moving relative to the stator back iron (1); a pair of stator magnets (2) matching with the mover group are provided on the inner surface of the stator back iron (1); the stator magnets (2) are symmetrically arranged on both sides of the mover group; the stator magnets (2) are composed of a plurality of N-pole magnets and S-pole magnets in an alternating array; the mover group comprises a mover housing (6) and a plurality of mover coils (5); a plurality of winding slots matching with the mover coils (5) are provided on the mover housing (6); the mover coils (5) ) are all wound on the winding groove of the rotor housing (6); a pair of heat dissipation groups are provided on the stator back iron (1), and the heat dissipation groups are respectively located on the upper and lower sides of the stator back iron (1) and are symmetrically arranged; the heat dissipation group is composed of a plurality of heat dissipation plate arrays; the heat dissipation plate includes a heat dissipation fin (3) and a heat conduction plate (7); the heat conduction plate (7) is located between the stator back iron (1) and the stator magnet (2); one end of the heat dissipation fin (3) is fixedly connected to the heat conduction plate (7); the other end of the heat dissipation fin (3) is exposed on the outside of the stator back iron (1).
2. The coreless linear motor using heat dissipation fins for heat dissipation according to claim 1, characterized in that: The heat conducting plate (7) is a solid plate; the heat dissipation fins (3) exposed on the outer side of the stator back iron (1) are all provided with heat dissipation holes.
3. The coreless linear motor using heat dissipation fins for heat dissipation according to claim 1, characterized in that: At least three mover coils (5) are arranged on the mover housing (6).
4. The coreless linear motor using heat dissipation fins for heat dissipation according to claim 1, characterized in that: The upper and lower end surfaces of the heat conducting plate (7) are in contact with the stator back iron (1) and the stator magnet (2) respectively.
5. The coreless linear motor using heat dissipation fins for heat dissipation according to claim 1, characterized in that: The magnetic poles of the stator magnets (2) corresponding to the upper and lower parts of the stator back iron (1) are in opposite directions.
6. The coreless linear motor using heat dissipation fins for heat dissipation according to claim 1, characterized in that: The surfaces of the stator back iron (1) and the stator magnet (2) are both plated with a nickel layer; the surfaces of the heat dissipation fin (3) and the heat conducting plate (7) are also plated with a nickel layer.
7. The coreless linear motor using heat dissipation fins for heat dissipation according to claim 1, characterized in that: The stator back iron (1) is U-shaped.