Coreless linear motor rotor

Abstract

The utility model provides a coreless linear motor mover, which comprises a cooling assembly and a plurality of coils, the cooling assembly comprises a cooling pipe group, a first cooling head and a second cooling head, the first cooling head and the second cooling head are respectively arranged at two ends of the cooling pipe group, the first cooling head is provided with a liquid inlet hole, the second cooling head is provided with a liquid outlet hole, and the liquid inlet hole is communicated with the liquid outlet hole. The liquid inlet hole and the liquid outlet hole are respectively communicated with two ends of the cooling pipe group; the plurality of coils are respectively clamped on two sides of the cooling pipe group so as to increase the contact area between the cooling pipe group and the coils and improve the heat dissipation efficiency, the upper end and the lower end of each coil are respectively provided with a bending part, so that the coils are arranged in a C-shaped structure of which the opening is deviated from the cooling pipe group, the electromagnetic induction effect is enhanced, and the motor efficiency is improved; wherein the cooling pipe set comprises a plurality of sub-pipelines, the sub-pipelines are arranged in parallel, the pipeline structure is optimized, the circulation speed of cooling liquid is higher, and the heat dissipation effect is better.

Description

TECHNICAL FIELD

[0001] The utility model belongs to motor technical field, concretely relates to a no iron core linear motor moving part. BACKGROUND

[0002] In actual production, linear motor is widely applied in small machine tool, laser cutting, even industrial automation, medical equipment, logistics transportation and aerospace and many other fields because of its high efficiency and high precision.

[0003] At present, commonly used linear motor is divided into iron core linear motor and no iron core linear motor, iron core linear motor has the characteristics of low cost, good heat dissipation, big thrust and high rigidity, but is influenced by the cogging effect, and the cogging force and thrust fluctuation are big, and the dynamic response is poor, so that higher motion precision cannot be realized, no iron core linear motor is not influenced by the cogging effect, but the existing no iron core linear motor relies on the heat dissipation capacity of motor body, and it is difficult to achieve good cooling effect, so that higher motor power cannot be obtained, and high load application occasions cannot be met.Although the heat dissipation pipe is added in the heat dissipation framework in the prior art, the cooling liquid is used to further improve the heat dissipation effect, but the heat dissipation effect of the heat dissipation pipe structure is different, so the structure of the liquid cooling heat dissipation still needs to be improved. SUMMARY

[0004] (1) Technical problem to be solved

[0005] The utility model provides a no iron core linear motor moving part, aims at solving the problem of poor heat dissipation effect of no iron core linear motor moving part in the prior art.

[0006] (2) Technical scheme

[0007] The utility model provides a no iron core linear motor moving part, including cooling assembly and a plurality of coils, the cooling assembly includes cooling pipe group and first cooling head and second cooling head who sets respectively at the both ends of cooling pipe group, be equipped with liquid inlet hole on the first cooling head, be equipped with liquid outlet hole on the second cooling head, the liquid inlet hole with the liquid outlet hole are communicated with the both ends of cooling pipe group respectively,

[0008] A plurality of coils are clamped and set on the both sides of cooling pipe group, and the upper and lower ends of the coil are provided with bending parts, so that the coil is provided with a "C" shape structure with the opening away from the cooling pipe group.

[0009] Among them, the cooling pipe group includes a plurality of sub-pipes, and each sub-pipe is arranged in parallel with each other.

[0010] Further, the first cooling head is provided with a first cavity communicated with the liquid inlet hole, and the second cooling head is provided with a second cavity communicated with the liquid outlet hole.

[0011] Furthermore, one end of the sub-pipe is provided with a water inlet and the other end is provided with a water outlet. Each water inlet is connected to the first cavity, and each water outlet is connected to the second cavity.

[0012] Furthermore, the cooling assembly also includes a connecting pipe, and the first cooling head is also provided with an auxiliary hole. One end of the connecting pipe is connected to the liquid outlet hole, and the other end is connected to the auxiliary hole.

[0013] Furthermore, adjacent sub-pipes are spaced at equal intervals or are fitted together.

[0014] Furthermore, the height of the coil is greater than or equal to the sum of the heights of the sub-channels.

[0015] Furthermore, the first cavity includes a first transverse portion and a first longitudinal portion that are interconnected, the water inlet is connected to the first longitudinal portion, and the liquid inlet is connected to the first transverse portion.

[0016] Furthermore, the second cavity includes a second transverse portion and a second longitudinal portion that are interconnected, the water outlet is connected to the second longitudinal portion, and the liquid outlet is connected to the second transverse portion.

[0017] Furthermore, it also includes a housing, within which both the cooling assembly and the coil are encapsulated.

[0018] Furthermore, the outer casing has an overall "I"-shaped structure and extends along the length of the cooling pipe assembly.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] The coreless linear motor actuator is configured with a double-coil structure, and the cooling tube assembly is located between the two coils, so that the coils clamp the cooling tube assembly respectively, thereby increasing the contact area between the cooling tube assembly and the coil and improving the heat dissipation efficiency. The cooling tube assembly also includes several sub-pipes, which are connected in parallel to optimize the pipe structure, making the coolant circulate faster and the heat dissipation effect better. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the cooling component and coil of this utility model.

[0023] Figure 3 This is an exploded view of the cooling assembly and coil of this utility model.

[0024] Figure 4 is a sectional view of the utility model combined with a stator.

[0025] Figure 5 is a perspective view of the coil of the utility model.

[0026] Figure 6 is a structural sectional view of the cooling assembly and the coil of the utility model.

[0027] Figure 7 is a schematic view of the overall structure of the second embodiment of the utility model.

[0028] Figure 8 is a structural schematic view of the cooling assembly and the coil of the second embodiment of the utility model.

[0029] Figure 9 is an exploded view of the cooling assembly and the coil of the second embodiment of the utility model.

[0030] Figure 10 is a sectional view of the first cooling head of the utility model.

[0031] Figure 11 is a sectional view of the second cooling head of the utility model.

[0032] Figure 12 is a sectional view of the overall structure of the utility model.

[0033] Reference signs: 1-cooling assembly, 11-cooling pipe group, 111-sub-pipe, 112-inlet hole, 113-outlet hole, 2-coil, 21-bent part, 12-first cooling head, 121-liquid inlet hole, 122-first cavity, 1221-first transverse part, 1222-first longitudinal part, 123-assistant hole, 13-second cooling head, 131-liquid outlet hole, 132-second cavity, 1321-second transverse part, 1322-second longitudinal part, 3-connection pipe, 4-outer shell. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0035] Reference Figures 1-12 .

[0036] As Figures 1-3The utility model provides a kind of coreless linear motor rotor shown, including cooling component 1 and several coils 2, the cooling component 1 includes cooling pipe group 11 and the first cooling head 12 and the second cooling head 13 respectively arranged at the both ends of the cooling pipe group 11, the first cooling head 12 is equipped with liquid inlet hole 121, the second cooling head 13 is equipped with liquid outlet hole 131, the liquid inlet hole 121 and the liquid outlet hole 131 are communicated with the both ends of the cooling pipe group 11 respectively, cooling liquid is injected from the liquid inlet hole 121 and flows into the cooling pipe group 11 to absorb the heat generated in the process of rotor movement, and cooling liquid absorbs heat and then flows out from the liquid outlet hole 131 to take away heat, to realize the effect of heat dissipation.Several coils 2 are clamped and arranged at the both sides of the cooling pipe group 11, so that the coil 2 is in close contact with the cooling pipe group 11, the heat transfer is accelerated, the heat dissipation efficiency is improved, and one side of each coil 2 is attached to the cooling pipe group 11, which not only has large contact area, short distance and high heat dissipation effect, but also can ensure uniform heat dissipation of each coil 2, which is beneficial to the stability and high precision of motor movement.

[0037] Specifically, as Figures 4-5 shown, the upper and lower ends of the coil 2 are provided with bending parts 21, so that the coil 2 is arranged in a "C" shape structure with the opening away from the cooling pipe group 11. Since the linear motor under the utility model is a coreless linear motor, the coil 2 is formed by solid winding, and the bending part 21 is formed by bending the two ends of the coil 2 to the same side by a certain radian. According to common sense, the rotor of the utility model is used in combination with the stator, the stator is provided with a movable groove, and the groove wall of the movable groove is provided with a plurality of magnets in sequence and side by side. The magnetism of adjacent magnets is opposite. The rotor is arranged in the movable groove. When the coil 2 is electrified, the coil 2 located on both sides of the cooling pipe group 11 will generate a changing magnetic field. The way of driving the rotor to move according to the magnetic action is well known to those skilled in the art, and will not be described in detail in this embodiment. However, the strength of the magnetic field generated by the coil 2 after electrification has a certain influence on the efficiency and accuracy of motor movement. Therefore, the bending part 21 of the coil 2 of the utility model can make the coil 2 interact with the magnetic field better, enhance the electromagnetic induction effect, and the curved coil structure can change the current path to reduce the generation of eddy current, thereby improving the motor efficiency. At the same time, the space layout can be optimized, the loss can be reduced, the manufacturing and installation are facilitated, and the structural stability is enhanced.

[0038] Further, as Figure 3 , Figure 6As shown, the cooling pipe group 11 comprises a plurality of sub-pipes 111, each of which is arranged in sequence along the Z-axis direction. In order to achieve better heat dissipation effect, two adjacent sub-pipes 111 are arranged at equal intervals on the Z-axis or are arranged in close contact with each other, and the height of the coil 2 is greater than or equal to the sum of the heights of each sub-pipe 111, so as to maximize the contact area between the cooling pipe group 11 and the coil 2, so that the heat generated by the coil 2 after being energized can be quickly and uniformly absorbed by the cooling pipe group 11, achieving the purpose of heat dissipation. The path of the sub-pipe 111 includes but is not limited to a straight line or a wavy line.

[0039] Further, as shown in Figure 6 The first cooling head 12 is provided with a first cavity 122 communicating with the liquid inlet hole 121, and the second cooling head 13 is provided with a second cavity 132 communicating with the liquid outlet hole 131. One end of each sub-pipe 111 is provided with a water inlet hole 112, and the other end is provided with a water outlet hole 113. Each water inlet hole 112 communicates with the first cavity 122, and each water outlet hole 113 communicates with the second cavity 132. By providing a common cavity in the first cooling head 12 or the second cooling head 13, the inconvenience of using multiple liquid access heads can be avoided, and the overall structure of the motor is simpler and more practical. Each sub-pipe 111 is arranged in parallel, and the blockage of any sub-pipe 111 will not affect the flow of other sub-pipes 111. The more the number of sub-pipes 111, the smaller the impact on the motor when clogging occurs, which can reduce damage to the motor and improve the service life of the motor. In this embodiment, the liquid inlet and outlet of the cooling assembly 1 are arranged at both ends of the rotor, which can be applied to the case where the space is sufficient, which is beneficial to the rapid discharge of the cooling liquid, improves the circulation speed of the cooling liquid, and further improves the heat dissipation effect.

[0040] Preferably, as shown in Figures 7-9As shown, in another embodiment, the cooling assembly 1 further comprises a connecting pipe 3, and the first cooling head 12 is further provided with an auxiliary hole 123, one end of the connecting pipe 3 is communicated with the liquid outlet hole 131, and the other end is communicated with the auxiliary hole 123. In this embodiment, the liquid outlet hole 131 is arranged on the side of the second cooling head 13 close to the cooling pipe group 11, so as to be connected with the connecting pipe 3. When the cooling liquid is injected into the liquid inlet hole 121, the cooling liquid fills the first cavity 122, and flows into each sub-pipe 111 from each water inlet hole 112 communicated with the first cavity 122, so as to absorb the heat generated by the coil 2. The cooling liquid which has absorbed the heat gradually becomes hot, and is discharged from the water outlet hole 113 to fill the second cavity 132, and then flows out of the auxiliary hole 123 through the liquid outlet hole 131 and the connecting pipe 3 communicated with the liquid outlet hole 131, thereby taking away the heat and achieving the effect of heat dissipation. In this embodiment, the liquid inlet and the liquid outlet of the cooling assembly 1 can be arranged on the same end of the rotor, which can reduce the occupied space, is convenient to use, and is more beautiful as a whole.

[0041] Further, as shown in the drawings, Figures 10-11 The first cavity 122 comprises a first transverse part 1221 and a first longitudinal part 1222 communicated with each other, the water inlet hole 112 is communicated with the first longitudinal part 1222, and the liquid inlet hole 121 is communicated with the first transverse part 1221. By arranging the liquid inlet hole 121 on the first transverse part 1221, the cooling liquid can flow in the first transverse part 1221 to absorb the heat of the first transverse part 1221, and then flow to the first longitudinal part 1222 and the cooling pipe group 11 to absorb the heat generated by the coil 2 and the rotor, so that the heat dissipation effect of the rotor as a whole is uniform, and the reliability of the rotor movement is ensured.

[0042] Similarly, the second cavity 132 comprises a second transverse part 1321 and a second longitudinal part 1322 communicated with each other, the water outlet hole 113 is communicated with the second longitudinal part 1322, and the liquid outlet hole 131 is communicated with the second transverse part 1321, which has the same effect as described above, and will not be described here. It should be noted that when the liquid inlet and the liquid outlet are arranged on the two ends of the rotor respectively, the volume of the first cooling head 12 and the second cooling head 13 is smaller, so the first transverse part 1221 and the second transverse part 1321 can not be arranged, so that the cooling liquid can directly flow from the liquid inlet hole 121 to the liquid outlet hole 131 without turning, so as to speed up the circulation speed of the cooling liquid, and the cooling and heat dissipation effect is better.

[0043] Further, as shown in the drawings, Figure 12As shown, the utility model still includes shell 4, cooling assembly 1 and coil 2 are all encapsulated in shell 4, because coil 2 is " C " shape structure, after encapsulation, shell 4 is " G " shape structure as a whole and extends to the length direction of cooling pipe group 11, until cooling assembly 1 is wrapped in, through setting up shell 4, coil 2 and cooling assembly 1 can be firmly fixed together, prevent coil 2 from deforming or shifting in the operation process due to vibration or external force, thereby improve the mechanical stability of motor, simultaneously, shell 4 can effectively isolate coil 2 and external environment, prevent electrical short circuit and the phenomenon of electric leakage, ensure the safe operation of motor. Shell 4 adopts the material (such as epoxy resin) of good heat conduction performance, can effectively conduct the heat generated by coil 2 to the outside to radiate, thereby improve the heat dissipation efficiency of motor.

[0044] The following is a detailed description of the working principle of the utility model:

[0045] When using, by injecting cooling liquid to the liquid inlet hole 121, the cooling liquid flows in the first cavity 122 of the first cooling head 12, and enters the rotor through the water inlet hole 112 of each sub-pipe 111, the heat generated by the rotor and the coil 2 in motion is mostly conducted into the cooling pipe group 11 and absorbed by the cooling liquid, and the cooling liquid that has absorbed heat continues to flow out from the water outlet hole 113 of each sub-pipe 111, and finally is discharged from the liquid outlet hole 131 or through the connecting pipe 3, to achieve the heat dissipation effect.

[0046] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

[0047] It is obvious to those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be considered as limiting the claims involved.

Claims

1. A coreless linear motor actuator, characterized in that, The device includes a cooling assembly (1) and several coils (2). The cooling assembly (1) includes a cooling tube group (11) and a first cooling head (12) and a second cooling head (13) respectively disposed at both ends of the cooling tube group (11). The first cooling head (12) is provided with a liquid inlet hole (121), and the second cooling head (13) is provided with a liquid outlet hole (131). The liquid inlet hole (121) and the liquid outlet hole (131) are respectively connected to both ends of the cooling tube group (11). Several coils (2) are respectively clamped and disposed on both sides of the cooling tube assembly (11). Both the upper and lower ends of the coils (2) are provided with bent portions (21), so that the coils (2) are arranged in a "C" shape with the opening facing away from the cooling tube assembly (11). The cooling pipe assembly (11) includes several sub-pipes (111), and each sub-pipe (111) is connected in parallel.

2. The coreless linear motor actuator according to claim 1, characterized in that, The first cooling head (12) is provided with a first cavity (122) communicating with the liquid inlet (121), and the second cooling head (13) is provided with a second cavity (132) communicating with the liquid outlet (131).

3. The coreless linear motor actuator according to claim 2, characterized in that, One end of the sub-pipe (111) is provided with a water inlet (112) and the other end is provided with a water outlet (113). Each water inlet (112) is connected to the first cavity (122) and each water outlet (113) is connected to the second cavity (132).

4. The coreless linear motor actuator according to claim 3, characterized in that, The cooling assembly (1) also includes a connecting pipe (3), and the first cooling head (12) is also provided with an auxiliary hole (123). One end of the connecting pipe (3) is connected to the liquid outlet (131), and the other end is connected to the auxiliary hole (123).

5. The mover of a coreless linear motor according to claim 1, characterized in that, The adjacent sub-pipes (111) are spaced at equal intervals or are fitted together.

6. The coreless linear motor actuator according to claim 5, characterized in that, The height of the coil (2) is greater than or equal to the sum of the heights of the sub-pipes (111).

7. The coreless linear motor actuator according to claim 3, characterized in that, The first cavity (122) includes a first transverse portion (1221) and a first longitudinal portion (1222) that are interconnected. The water inlet (112) is connected to the first longitudinal portion (1222), and the liquid inlet (121) is connected to the first transverse portion (1221).

8. The coreless linear motor actuator according to claim 7, characterized in that, The second cavity (132) includes a second transverse portion (1321) and a second longitudinal portion (1322) that are interconnected. The water outlet (113) is connected to the second longitudinal portion (1322), and the liquid outlet (131) is connected to the second transverse portion (1321).

9. The mover of a coreless linear motor according to claim 1, characterized in that, It also includes a housing (4), in which the cooling assembly (1) and the coil (2) are both encapsulated.

10. The mover of a coreless linear motor according to claim 9, characterized in that, The outer shell (4) is in the shape of an "I" and extends along the length of the cooling pipe assembly (11).

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