Cooling mechanism between a linear motor rotor and its combined platform

Abstract

Cooling mechanism (10) between a linear motor rotor and its combined platform, comprising a linear motor (20) having a rotor (21); a platform (30) which has a platform base (31) connected to the runner (21) and is movable with the movement of the runner (21); a cooling section (40) comprising a combination base (41) located between the platform base (31) and the runner (21), a cooling element (42) located between the combination base (41) and the runner (21), and a channel (43) provided in the cooling element (42) and connected to an external pipeline, wherein an external fluid flows into the channel (43) via the external pipeline and then flows outwards; characterized in that that the cooling mechanism (10) comprises a mounting section (50); wherein the mounting section (50) has a first through-hole (52), a second through-hole (53), a combination hole (55) and a combination element (56) arranged coaxially to each other, wherein the first through-hole (52) is provided in and passes through the platform base (31), wherein the second through-hole (53) is provided in and passes through the combination base (41), wherein the combination hole (55) is provided in the runner (21), wherein the combination element (56) is rod-shaped and successively passes through the first through-hole (52) and the second through-hole (53) and is secured in the combination hole (55),wherein the fastening section (50) comprises a spacer base (51) and a third through-hole (54) extending through the spacer base (51) and lying coaxially to the first through-hole (52) and the second through-hole (53), wherein the combination element (56) is inserted through the third through-hole (54); , further characterized by that the cooling section (40) comprises a combination plane (44) located on the side of the cooling element (42) facing the combination base (41) and an insulating layer (45) located between the combination plane (44) and the combination base (41), wherein the combination plane (44), the insulating layer (45) and the combination base (41) are stacked tightly on top of each other, that the cooling element (42) comprises the spacer base (51) located between the runner (21) and the combination base (41), wherein one side of the spacer base (51) lies in the same plane as the combination plane (44), wherein the other side of the spacer base (51) facing away from the combination plane (44) projects from an extruded aluminum strip (421) located between the combination base (41) and the runner (21) and rests against the runner (21) to form a gap between the runner and the extruded aluminum strip (421), and that the insulating layer (45) is viscous to connect the combination plane (44) with the combination base (41) so that the cooling element (42) can adhere to the combination base (41), wherein the insulating layer (45) is a double-sided adhesive tape.

Description

Field of invention

[0001] The present invention relates to motor cooling technology and in particular to a cooling mechanism between a linear motor rotor and its combined platform. State of the art

[0002] To prevent heat from impairing motor performance, a commonly used and conventional motor cooling technique involves dissipating the heat generated by the motor through a continuously flowing fluid. The heat generated by a running motor not only affects motor performance but also the moving parts connected to the motor, such as the motion platform used in precision machining. The motion platform is integrated with the linear motor rotor and moves along with the rotor's motion. As the motor's heat energy is transferred to the motion platform, its accuracy decreases, and the platform can even deform. This ultimately prevents the accuracy requirements of precision machining from being met.

[0003] To eliminate the aforementioned deficiency of reduced accuracy, a prior art technique exists in which a tubular element, through which a fluid flows, is arranged between a rotor and a motion platform to reduce the heat energy transferred from the motor to the motion platform. In this technique, one end of the copper tube is in contact with the combination element located on one side of the motion platform, while the other end of the copper tube is separated from the motor rotor without direct contact. Thus, when the heat energy from the motor rotor is transferred to the copper tube via the air, some of the heat energy is transferred to the motion platform due to the direct contact between the copper tube and the motion platform. This leads to a change in the size of the motion platform and consequently to a deterioration in the displacement accuracy.

[0004] A cooling mechanism for a linear motor with the features of the preamble of claim 1 is known from patent application DE 10 2016 114 742 A1. Another cooling mechanism for a linear motor is described in utility model DE 29718566 U1. Object of the invention

[0005] The main objective of the present invention is to provide a cooling mechanism between the linear motor rotor and its combined platform, which minimizes the impairment of the motion platform caused by the heat of the motor, in order to ensure that the accuracy of the platform is maintained. Technical solution

[0006] To solve the aforementioned problem, the present invention provides a cooling mechanism between a linear motor rotor and its combined platform, which has the features of claim 1. Further embodiments of the cooling mechanism according to the invention are the subject of the dependent claims. In the cooling mechanism according to the invention, the heat transfer occurring between the rotor and the platform is prevented by the cooling section clamped between the rotor and the platform, in order to prevent the heat energy absorbed by the cooling section from being transferred to the platform during heat dissipation, thus ensuring that the accuracy of the platform is maintained.

[0007] In relation to the technical content, the cooling mechanism between the linear motor rotor and its combined platform comprises a linear motor, a platform, and a cooling section, wherein the cooling section has a combination base located between the platform base and the rotor, wherein a cooling element is located between the combination base and the rotor, wherein a combination plane is located on the side of the cooling element facing the combination base, wherein an insulating layer is located between the combination plane and the combination base, wherein all three – the combination plane, the insulating layer, and the combination base – are stacked tightly on top of each other, with the insulating layer preventing direct contact between the combination plane and the combination base.

[0008] The insulating layer is viscous in order to provide an adhesive force when bonded to the combination base.

[0009] Furthermore, to simplify manufacturing and assembly, the cooling element comprises the following: two strip-shaped, hollow, extruded aluminum strips produced from aluminum metal by an extrusion process; a curved connecting tube, the two ends of which are each rigidly connected to one end of the longitudinal axis of the respective extruded aluminum strip; and two adapter tubes, each rigidly connected at one end to the other end of the longitudinal axis of the respective extruded aluminum strip. The hollow interior of all extruded aluminum strips, the interior of the connecting tube, and the interiors of all adapter tubes are all interconnected to provide a channel for the supply of an external fluid.

[0010] In this case, the combination plane is located on one side of the longitudinal axis of the respective extruded aluminum strip.

[0011] To further improve the thermal insulation effect, the cooling section can also have insulating discs located between the combination base and the platform base to avoid direct contact between the combination base and the platform base.

[0012] Furthermore, the insulating layer is a double-sided adhesive tape.

[0013] Furthermore, the assembly, in terms of the combination technology of the platform base, the combination base, and the runner, can be a conventional combination assembly. For example, rod-shaped combination elements can be passed through the platform base to connect the combination base to the runner. To ensure a suitable gap between the cooling element and the runner, and thus achieve a thermal insulation effect, the thickness provided between the combination base and the runner can be greater than the thickness of the respective spacer base of the cooling element.

[0014] In this case, the spacer bases can be manufactured in one piece with the respective extruded aluminum strip, with the sides of the spacer bases adjacent to the combination plane being in the same plane as the combination plane. Brief description of the drawings

[0015] The drawings used to illustrate the exemplary embodiment show: Fig. 1 a perspective view of a preferred embodiment according to the present invention; Fig. 2 an exploded view of the preferred embodiment according to the present invention; Fig. 3 a perspective view of an extruded aluminium strip of the preferred embodiment according to the present invention; Fig. 4 a cross-sectional view of the preferred embodiment along section line 4-4 according to Fig. 1; Fig. 5 an enlarged view of area A of the preferred embodiment according to Fig. 4; Fig. 6 a cross-sectional view of the preferred embodiment along the section line 6-6 according to Fig. 1; Fig. 7 a cross-sectional view of the preferred embodiment along section line 7-7 according to Fig. 1; Fig. 8 an enlarged view of area B of the preferred embodiment according to Fig. 7. Detailed description of the preferred embodiment

[0016] Referring to all figures, the cooling mechanism between the linear motor rotor and its combined platform (10) of a preferred embodiment of the present invention primarily comprises a linear motor (20), a platform (30), a cooling section (40) and a mounting section (50).

[0017] The linear motor (20) belongs to conventional motor technology and is not part of the technical content that the present invention aims to improve. Therefore, only the position of the rotor (21) is shown to describe the technical features of the present invention, and the specific details of the linear motor, such as its construction, are not relevant for the realization of the invention.

[0018] The platform (30) is also known from the prior art and can be used as a mobile platform for precision machining machines. Structurally, it comprises a platform base (31) that is movable in accordance with the movement of the runner (21).

[0019] The cooling section (40) has an inverted U-shaped, plate-shaped combination base (41) located between the combination base (41) and the runner (21), a cooling element (42) located between the combination base (41) and the runner (21), and a channel (43) provided within the cooling element (42) for supplying a fluid, wherein the channel (43) is continuously connected to an external pipeline, wherein a low-temperature fluid is introduced into the channel from the outside and, after absorbing the heat energy, is again discharged to the outside to achieve a heat dissipation effect.

[0020] To prevent the heat energy absorbed by the cooling section (40) from being transferred to the platform (30) and thus impairing the accuracy of the platform (30), in the present embodiment the cooling section (40) further comprises a combination plane (44) located on the side of the cooling element (42) facing the combination base (41), and an insulating layer (45) located between the combination plane (43) and the combination base (41), which prevents direct contact between the cooling element (42) and the combination base (41). After the heat energy of the linear motor (20) has been transferred to the cooling element (42), the blocking function of the insulating layer (45) prevents the heat energy from being transferred back to the combination base (41), thus indirectly preventing the heat energy of the linear motor (20) from being transferred to the platform (30) via the combination base (41).

[0021] Furthermore, the cooling element (42) comprises the following: two strip-shaped, hollow, extruded aluminum strips (421) arranged parallel and spaced apart from each other; a U-shaped, curved connecting tube (422), the two ends of which are each rigidly connected to one end of the longitudinal axis of the respective extruded aluminum strip (421); and two adapter tubes (423), each rigidly connected to the other end of the longitudinal axis of the respective extruded aluminum strip (421). The hollow interior of all extruded aluminum strips (421), the interior of the connecting tube (422), and the interiors of all adapter tubes (423) together form the channel (43), with the combination plane (44) located on one side of the longitudinal axis of the respective extruded aluminum strip (421).

[0022] The fastening section (50) has several block-shaped spacer bases (51) located between the combination base (41) and the runner (21), wherein several first through holes (52) are provided in and extend through the platform base (31), wherein several second through holes (53) are provided in and extend through the combination base (41), wherein several third through holes (54) are provided in the respective spacer base (51), wherein several combination holes (55) are provided in the runner (21), wherein all first through holes (52), all second through holes (53), all third through holes (54) and all combination holes (55) are arranged coaxially with each other, wherein several rod-shaped combination elements (56) extend through the first through holes (52), the second through holes (53) and the third through holes (54), which are arranged coaxially with each other.through which and combined with the combination holes (55) to combine the platform base (31), the combination base (41) and the runner (21).

[0023] The thickness (D1) of the respective spacer base (51) is greater than the thickness (D2) of the respective extruded aluminum strip (421), with one side of the spacer base (51) lying in the same plane as the combination plane (44), causing the other side to protrude from the other side of the respective extruded aluminum strip (421), forming a suitable gap (D3) between the other sides of the extruded aluminum strip (421) and the runner (21) to prevent the cooling section (40) from being in direct contact with the runner (21) and thus reducing the extent of heat transfer.

[0024] To facilitate assembly and processing, all spacer bases (51) are formed in one piece on the opposite side of the longitudinal axis of the respective extruded aluminum strip (421). This structure can be formed and maintained in one piece by extruding the aluminum metal.

[0025] To further improve the thermal insulation effect, the cooling section (40) also includes several ring-shaped insulating discs (46), each encompassing the respective combination element (55) and located between the platform base (31) and the combination base (41) to avoid direct contact between the platform base (31) and the combination base (41) and thus reduce the extent of heat conduction.

[0026] To prevent fluid leakage at the combination sections of the several components through which the channel (43) is formed, in the present embodiment the cooling element (42) has several pipe connectors (424) through which the two ends of the connecting pipe (422) and one end of the respective adaptation pipe (423) are passed, which are each inserted into the respective extruded aluminum strip (421) and each bear against the inner shoulder surface of the respective extruded aluminum strip (421) by means of an O-ring (425) in order to achieve the advantageous effects of alignment and leakage prevention.

[0027] By assembling the above-mentioned components, a suitable distance between the cooling section (40) and the runner (21) can be ensured in the cooling mechanism between the linear motor rotor and its combined platform (10) by means of the entirety of the spacer bases (51) in order to achieve a thermal insulation effect, while furthermore preventing the transfer of heat energy to the platform (30) through the insulation layer (45) and the entirety of the insulating discs (46) in order to further improve the thermal insulation effect achieved with the present invention and to ensure that the accuracy of the platform is maintained.Furthermore, the extruded aluminium strips (421) and the spacer bases (51) can be manufactured more conveniently and practically, and the insulation layer (45) is a double-sided adhesive tape and all insulation discs (46) can be objects with adhesive function and thermal insulation effect, such as double-sided adhesive tape, so that the insulation layer (45) and all insulation discs (46) have a thermal insulation effect and can also be used as combination elements, which facilitates manufacturing and assembly. Reference symbol list 10 Cooling mechanism between the linear motor rotor and its combined platform 20 linear motor 21 runners 30 platform 31 Platform base 40 Cooling section 41 combination basis 42 Cooling element 421 extruded aluminum strips 422 Connecting pipe 423 Adaptation tube 424 Pipe connector 425 O-ring Channel 43 44 Combination level 45 Insulation layer 46 insulating discs 50 fastening section 51 spacer base 52 first through hole 53 second through hole 54 third through hole 55 combination hole 56 Combination element D1 thickness D2 thickness D3 gap

Claims

[1] Cooling mechanism (10) between a linear motor rotor and its combined platform, comprising a linear motor (20) having a rotor (21); a platform (30) which has a platform base (31) connected to the runner (21) and is movable with the movement of the runner (21); a cooling section (40) comprising a combination base (41) located between the platform base (31) and the runner (21), a cooling element (42) located between the combination base (41) and the runner (21), and a channel (43) provided in the cooling element (42) and connected to an external pipeline, wherein an external fluid flows into the channel (43) via the external pipeline and then flows outwards; characterized by , that the cooling mechanism (10) comprises a mounting section (50); wherein the mounting section (50) has a first through-hole (52), a second through-hole (53), a combination hole (55) and a combination element (56) arranged coaxially to each other, wherein the first through-hole (52) is provided in and passes through the platform base (31), wherein the second through-hole (53) is provided in and passes through the combination base (41), wherein the combination hole (55) is provided in the runner (21), wherein the combination element (56) is rod-shaped and successively passes through the first through-hole (52) and the second through-hole (53) and is secured in the combination hole (55),wherein the fastening section (50) comprises a spacer base (51) and a third through hole (54) extending through the spacer base (51) and lying coaxially to the first through hole (52) and the second through hole (53), wherein the combination element (56) is inserted through the third through hole (54); further characterized by , that the cooling section (40) comprises a combination plane (44) located on the side of the cooling element (42) facing the combination base (41) and an insulating layer (45) located between the combination plane (44) and the combination base (41), wherein the combination plane (44), the insulating layer (45) and the combination base (41) are stacked tightly on top of each other, that the cooling element (42) comprises the spacer base (51) located between the runner (21) and the combination base (41), wherein one side of the spacer base (51) lies in the same plane as the combination plane (44), wherein the other side of the spacer base (51) facing away from the combination plane (44) projects from an extruded aluminum strip (421) located between the combination base (41) and the runner (21) and rests against the runner (21) to form a gap between the runner and the extruded aluminum strip (421), and that the insulating layer (45) is viscous to connect the combination plane (44) with the combination base (41) so that the cooling element (42) can adhere to the combination base (41), wherein the insulating layer (45) is a double-sided adhesive tape. [2] Cooling mechanism (10) between a linear motor rotor and its combined platform according to claim 1, wherein the cooling section (40) further comprises at least one insulating disk (46) which is clamped between the combination base (41) and the platform base (31). [3] Cooling mechanism (10) between a linear motor rotor and its combined platform according to claim 2, wherein the insulating disk (46) is annular and surrounds the combination element (56).

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