Radiating device of linear motor

Abstract

The utility model provides a linear motor heat radiation device, which comprises a motor rotor slidably arranged on a motor stator, the motor rotor comprises a rotor shell and a rotor cover plate, the rotor shell and the rotor cover plate form a closed space capable of accommodating a silicon steel sheet, the rotor cover plate is provided with an air inlet and an air outlet, and the air inlet is communicated with the air outlet. A main heat dissipation groove is formed in the periphery of the silicon steel sheet, a silicon steel sheet heat dissipation groove is formed in the silicon steel sheet, and the silicon steel sheet heat dissipation groove is communicated with the main heat dissipation groove, so that cold air is input from the air inlet, heated hot air is output from the air outlet, and an air cooling air circulation air path is formed. According to the technical scheme provided by the utility model, the heat dissipation structure of the traditional linear motor is greatly simplified by only arranging the heat dissipation structure on the indispensable silicon steel sheet, the use of other heat dissipation parts is reduced on the basis of improving the heat dissipation efficiency, the manufacturing cost is reduced, and the service life of the linear motor is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to linear motor technical field especially relates to a linear motor heat dissipation structure of high heat dissipation efficiency. BACKGROUND

[0002] Many precision machining equipment use linear motor, and the requirement of linear motor's thrust, speed and other performances is increasing, which needs larger current drive, so that the heat generation of linear motor increases sharply in the working process, which directly leads to demagnetization of permanent magnet, and the motor efficiency decreases with time, and the motor will also cause temperature jump and other unstable conditions due to the sudden increase of coil winding temperature.

[0003] There are many technical solutions to improve the heat dissipation effect of linear motor in the prior art, such as the Chinese invention patent with the application publication number CN116455146A, the name of which is "a linear motor heat dissipation structure based on a uniform temperature plate". In order to improve the heat dissipation efficiency of linear motor, the heat dissipation structure provided by the patent is arranged on the moving part 6 of linear motor, which includes heat dissipation fins 1, a uniform temperature plate 2 (or a phase change uniform temperature plate 2), a silicon steel sheet 3, an epoxy resin 4, a heat conduction gasket 5, a coil winding 8, an iron core 9 and a fixing screw 10, wherein the silicon steel sheet 3 is provided with a square groove 15, and the uniform temperature plate 2 is embedded in the groove 15; the epoxy resin 4 and the heat conduction gasket 5 are respectively arranged at the evaporation end 11 and the condensation end 12 of the uniform temperature plate, wherein the heat dissipation fins 1 are locked on the silicon steel sheet 3 by the fixing screw 10, and in some embodiments, a heat conduction layer is arranged between the evaporation end 11 and the silicon steel sheet 3, and between the condensation end 12 and the heat dissipation fins 1, the heat dissipation fins are preferably copper, copper alloy and other materials, and the uniform temperature plate 2 is a copper-based uniform temperature plate. As can be seen, the heat dissipation structure of the above-mentioned linear motor in the prior art is complex in structure, has many parts, and the consumables are relatively expensive metals, the heat dissipation structure can improve the heat dissipation performance, but the manufacturing cost is very high, and because the heat dissipation is through heat transfer of multiple media or intermediate parts, the improvement of the heat dissipation performance is still limited.

[0004] For example, the Chinese utility model patent with the application publication number CN 219833931 U, entitled "Linear motor heat dissipation structure based on heat pipe". In order to improve the heat dissipation efficiency of the linear motor, the heat dissipation structure provided by the patent is arranged on the mover 6, which includes heat dissipation fins 1, heat pipes 2 (or phase change heat pipes 2), silicon steel sheets 3, epoxy resin 4, heat-conducting gaskets 5, coil windings 8, iron cores 9 and fixing screws 10. Among them, the motor silicon steel sheet 3 is provided with a square groove 13, and a plurality of heat pipes 2 are embedded in the groove 13; the groove 13 and the heat pipe 2 are filled with heat-conducting interface material, and the heat dissipation fins 1 and the heat pipe 2 are placed between the heat-conducting gaskets 5, wherein the heat dissipation fins 1 are locked on the silicon steel sheet 3 by the fixing screws 10. In some embodiments, the heat pipe 2 is a copper-based heat pipe, and the linear motor heat dissipation structure disclosed by the patent still has the same technical weaknesses or structural defects.

[0005] Therefore, designing a low-cost linear motor heat dissipation structure with simple structure and high heat dissipation performance is the expectation of the current market. Utility model content

[0006] In view of the deficiencies in solving the heat dissipation problem of linear motor in the prior art and the market expectation, the main purpose of the utility model is to provide a linear motor heat dissipation device, trying to simplify the heat dissipation structure to improve the heat dissipation efficiency, and also reduce the manufacturing cost of the linear motor heat dissipation structure.

[0007] The utility model provides a linear motor heat dissipation device, including motor mover who slides in motor stator, motor mover includes mover shell and mover cover, the mover shell with the mover cover forms a closed space who can accommodate silicon steel sheet, be equipped with air inlet and air outlet on the mover cover, be provided with main heat dissipation groove around the silicon steel sheet, the silicon steel sheet is equipped with silicon steel sheet heat dissipation groove, the silicon steel sheet heat dissipation groove is linked together with main heat dissipation groove, so from the air inlet input cold air, from the air outlet output after heating hot air, to form air cooling gas circulation gas path.

[0008] Further, the silicon steel sheet is provided with a silicon steel sheet tooth slot for winding, and the silicon steel sheet heat dissipation groove is arranged on the other side opposite to the silicon steel sheet tooth slot.

[0009] Further, the cross section of the silicon steel sheet heat dissipation groove is rectangular, i.e. designed as a rectangular opening shape.

[0010] Further, the size ratio of the silicon steel sheet heat dissipation groove is set as groove width: groove depth: groove distance = 2:3:2, so as to achieve the highest heat dissipation efficiency by using the silicon steel sheet.

[0011] Preferably, the mover shell is provided with a sealing groove capable of accommodating a sealing gasket, which can ensure the sealing performance between the mover shell and the mover cover plate.

[0012] More preferably, the air inlet and the air outlet are diagonally arranged on the mover cover plate.

[0013] Of course, the air inlet and the air outlet can also be arranged at two ends of the mover cover plate respectively, and are not limited to diagonal design.

[0014] Generally, the motor stator comprises a guide rail and a magnetic steel arranged along the guide rail. In addition, the silicon steel sheet is provided with mounting grooves, and the number of the mounting grooves is 4, and other numbers can also be used according to specific needs.

[0015] The technical scheme provided by the utility model greatly simplifies the heat dissipation structure of the traditional linear motor by arranging the heat dissipation structure only on the indispensable silicon steel sheet, reduces the use of other heat dissipation components on the basis of improving the heat dissipation efficiency, reduces the manufacturing cost, and prolongs the service life of the linear motor. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the embodiment of the utility model;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the embodiment of the utility model after removing the mover cover plate;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the silicon steel sheet in the embodiment of the utility model;

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the silicon steel sheet in the embodiment of the utility model. DETAILED DESCRIPTION

[0020] In order to more clearly set forth the technical scheme of the utility model, the embodiments of the utility model will be briefly described below in combination with the drawings. Obviously, the description of the embodiments and the drawings is only for illustrating the technical scheme of the utility model, and the protection scope of the utility model is not limited to the embodiments and the drawings under the understanding of those skilled in the art.

[0021] As Figures 1-2As shown, it is a linear motor heat dissipation device, including the motor stator 6 on the motor slider 3, the motor slider 3 includes the slider shell 31 and the slider cover plate 32, the slider shell 31 and the slider cover plate 32 form a closed space capable of accommodating silicon steel sheet 1, the slider cover plate 32 is provided with air inlet 321 and air outlet 322, the silicon steel sheet 1 is provided with a main heat dissipation groove 5, the silicon steel sheet 1 is provided with a silicon steel sheet heat dissipation groove 11, the silicon steel sheet heat dissipation groove 11 is communicated with the main heat dissipation groove 5.

[0022] In actual work, the cold air is input from the air inlet 321 and flows through the circulating passage (air path) formed by the main heat dissipation groove 5 and the silicon steel sheet heat dissipation groove 11, and finally discharged from the air outlet 322 of the linear motor, in this process, the heat generated by the linear motor in the working process is taken away, thereby playing a role in dissipating heat of the linear motor.

[0023] The same as the prior art is that the silicon steel sheet 1 is provided with a silicon steel sheet tooth slot 12 for winding, which is different from the prior art that the silicon steel sheet heat dissipation groove 11 is arranged on the other side opposite to the silicon steel sheet tooth slot 12, and the silicon steel sheet mounting groove 13 is generally arranged on this side, and the silicon steel sheet mounting groove 13 can be arranged several according to specific conditions, for example, four in an embodiment.

[0024] Because the silicon steel sheet heat dissipation groove 11 is arranged on the silicon steel sheet 1, the heat dissipation area of the silicon steel sheet 11 is greatly increased, thereby more conducive to conducting the heat generated by the linear motor core directly from the improved silicon steel sheet 1 without other heat dissipation components, that is, the heat dissipation structure is simplified, and the heat dissipation efficiency is improved while the manufacturing cost is reduced.

[0025] In an embodiment, in order to facilitate processing or molding and easy maintenance, the cross section of the silicon steel sheet heat dissipation groove 11 is rectangular.

[0026] From the heat dissipation principle of the silicon steel sheet 1, the larger the surface area generated by the heat dissipation groove, the higher the heat dissipation efficiency will be, but in practice, the actual conditions and needs are still considered, and it is proved through tests that when the size ratio groove width: groove depth: groove distance of the silicon steel sheet heat dissipation groove 11 is 2:3:2, the heat dissipation efficiency is the best. That is, in an embodiment, the groove width of the silicon steel sheet heat dissipation groove 11 is 2mm, the groove depth is 3mm, and the distance between the groove edges of adjacent silicon steel sheet heat dissipation grooves 11 is 2mm. Through tests, the silicon steel sheet heat dissipation groove 11 with this proportion setting has better heat dissipation performance than other proportion settings.

[0027] The slider shell 31 is provided with a sealing groove 4 capable of accommodating a sealing gasket, the sealing gasket ensures the sealing performance between the slider shell 31 and the slider cover plate 32, and the sealing gasket can adopt a common silica gel sealing ring.

[0028] In an embodiment, the air inlet 321 and the air outlet 322 are arranged on the mover cover plate 32 in a diagonal manner, so that the cold air for heat dissipation of the linear motor flows through the longest path, and the heat dissipation efficiency is high.

[0029] In another embodiment, the air inlet 321 and the air outlet 322 are arranged at two ends of the mover cover plate 32 according to the actual arrangement position.

[0030] The motor stator 6 includes a guide rail and a magnetic steel arranged along the guide rail, which is the same as in the prior art. In addition, the silicon steel sheet is further provided with mounting grooves, and the number of the mounting grooves is 4, and other numbers can also be used according to specific needs.

[0031] Compared with the prior design scheme, the embodiment scheme of the utility model provides a heat dissipation device which omits a plurality of intermediate heat dissipation components, uses a heat dissipation groove directly arranged on a silicon steel sheet to increase a heat dissipation area, and improves heat dissipation performance, so that the structure of the linear motor is simplified, the manufacturing cost is reduced, and the working life of the linear motor is improved.

[0032] The above embodiment is only used to illustrate the technical scheme of the utility model, and should not be considered as a limitation on the protection scope of the utility model. The utility model is used in the technical field of linear motor related products.

Claims

1. A linear motor cooling device, comprising a motor mover slidingly arranged on a motor stator, the motor mover comprising a mover housing and a mover cover plate, the mover housing and the mover cover plate forming a closed space capable of accommodating silicon steel sheets, characterized in that, The mover cover plate is provided with an air inlet and an air outlet, and a main heat dissipation groove is arranged around the silicon steel sheet.

2. The linear motor heat sink of claim 1, wherein The silicon steel sheet is provided with a silicon steel sheet tooth slot for winding, and the silicon steel sheet heat dissipation groove is arranged on the other side opposite to the silicon steel sheet tooth slot.

3. The linear motor heat sink of claim 2, wherein the plurality of fins are arranged in a plurality of rows, and the plurality of rows are arranged in a plurality of columns. The cross section of the silicon steel sheet heat dissipation groove is rectangular.

4. The linear motor heat sink of claim 3, wherein the plurality of fins are arranged in a plurality of rows, and the plurality of rows are arranged in a plurality of columns. The size ratio of the silicon steel sheet heat dissipation groove is groove width: groove depth: groove distance = 2:3:

2.

5. The linear motor heat sink of claim 1, wherein the plurality of fins are arranged in a plurality of rows, and the plurality of rows are arranged in a plurality of columns. The mover shell is provided with a sealing groove capable of accommodating a sealing washer, and the sealing washer can ensure the sealing performance between the mover shell and the mover cover plate.

6. The linear motor heat sink of claim 5, wherein, The sealing washer is a silica gel sealing washer.

7. The linear motor heat sink of claim 1, wherein, The air inlet and the air outlet are diagonally arranged on the mover cover plate.

8. The linear motor heat sink of claim 1, wherein, The air inlet and the air outlet are respectively arranged at two ends of the mover cover plate.

9. The linear motor heat sink of any one of claims 1-8, wherein, The motor stator comprises a guide rail and a magnetic steel arranged along the direction of the guide rail.

10. The linear motor heat sink of any one of claims 1-8, wherein, The silicon steel sheet is provided with four mounting grooves.

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