Linear motor mover and linear motor

Abstract

The present invention provides a linear motor mover and a linear motor. The linear motor mover comprises a mover core (1), a coil winding (2) and an annular cooling jacket (3), wherein the cooling jacket (3) is sleeved outside the mover core (1) and located between the coil winding (2) and the mover core (1) to separate the mover core (1) and the coil winding (2). The linear motor mover according to the present invention can effectively improve the heat dissipation performance of the motor and prevent the motor from overheating.

Description

Technical Field

[0001] The invention belongs to the technical field of motors, and in particular relates to a linear motor mover and a linear motor. Background Art

[0002] Linear servo motors are generally used in high-precision motion workplaces. They have the characteristics of high precision, high acceleration, high responsiveness, and high thrust. Therefore, the coil windings of linear motors will generate a lot of heat in a short period of time when they are working. On the one hand, excessive temperature rise may cause the wire to exceed its temperature resistance limit, resulting in damage to its insulation layer; on the other hand, the heat will be transferred to the working platform along with the mover core, which will cause slight thermal deformation of the moving workbench, resulting in reduced motion accuracy. If the heat can be reduced from the source of the heat generated by the motor windings and the heat transfer to the core can be blocked, it will effectively improve the serious heating problem inside the motor, and at the same time, it will effectively improve the working environment temperature, so that high-precision moving parts can move at a stable temperature and maintain high motion accuracy.

[0003] In the prior art, in order to dissipate heat from the motor winding, open slots are arranged at the bottom and sides of the winding slots, and the cooling tube is flattened into a snake shape and embedded in the middle of the slot. Since this solution sets open slots at the bottom and sides of the core slots, and the motor magnetic circuit flows in the core, the slots will have a greater impact on the magnetic circuit and reduce the motor efficiency; and since the cooling slots are only set at the bottom of the slot, the main heat source of the motor - the coil winding - cannot be isolated from the core, and the coil heat will be transferred to other parts such as the teeth, causing the motor temperature to rise too high and poor heat dissipation. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to provide a linear motor mover and a linear motor, which can effectively improve the heat dissipation performance of the motor and avoid excessive temperature rise of the motor.

[0005] In order to solve the above problems, the present invention provides a linear motor mover, including a mover core, a coil winding and an annular cooling jacket, wherein the cooling jacket is arranged outside the mover core and between the coil winding and the mover core to separate the mover core and the coil winding.

[0006] Preferably, the linear motor mover further comprises a connecting piece, and the connecting piece connects two adjacent cooling jackets.

[0007] Preferably, the cooling jackets are connected via connecting pieces to form cooling channels in series.

[0008] Preferably, there are multiple connecting pieces, the connecting pieces located on the first side are arranged at intervals and connect the two adjacent cooling jackets on this side, and the cooling jackets connected by each connecting piece are different; the connecting pieces located on the second side are arranged at intervals and connect the two adjacent cooling jackets on this side, and the cooling jackets connected by each connecting piece are different; the cooling jackets connected by the connecting piece located on the first side and the cooling jackets connected by the connecting piece located on the second side are connected in series in an S shape through the connecting piece.

[0009] Preferably, there are two connecting pieces, each connecting piece includes a plurality of connecting channels arranged at intervals, each connecting channel is connected to a different cooling jacket, one connecting piece is connected to the first side of the cooling jacket, and the other connecting piece is connected to the second side of the cooling jacket, and the cooling jacket forms an S-shaped cooling channel in series through the two connecting pieces.

[0010] Preferably, the cooling jacket is hollow to form an annular coolant channel.

[0011] Preferably, the connecting piece is connected to the cooling jacket by plug-fitting.

[0012] Preferably, the connecting piece includes two adapters, and an adapter port communicating with the coolant channel is respectively provided on both sides of the cooling jacket, and the adapter port is plugged into the adapter port.

[0013] Preferably, the connecting piece and the cooling jacket are sealed at the plug-in position by welding or waterproof glue.

[0014] Preferably, the adapter is rectangular, circular or elliptical, and the shape of the adapter matches the shape of the adapter.

[0015] Preferably, the height of the cooling jacket is less than or equal to the tooth length of the mover core.

[0016] Preferably, the connecting piece and the cooling jacket are made of hard aluminum alloy AL7075.

[0017] Preferably, the connecting piece is attached to the yoke of the mover core.

[0018] Preferably, the linear motor mover further comprises a cooling joint, and the cooling joint is connected to the cooling sleeve through a connecting piece.

[0019] Preferably, the cooling joint includes a connected water inlet joint and a transfer groove, the water inlet joint is used to be connected with a water inlet pipe or a water outlet pipe, and the connecting piece is connected with the cooling joint through the transfer groove.

[0020] According to another aspect of the present invention, a linear motor is provided, comprising a linear motor mover, wherein the linear motor mover is the linear motor mover described above.

[0021] The linear motor mover provided by the present invention comprises a mover core, a coil winding and an annular cooling jacket, wherein the cooling jacket is arranged outside the mover core and between the coil winding and the mover core to separate the mover core from the coil winding. The linear motor mover separates the coil winding from the mover core through the annular cooling jacket, and can effectively cool the coil winding and cool the core yoke at the same time, forming an iron core-winding-cooling jacket module, which is easy to wind and assemble, and can effectively improve the heat dissipation performance of the motor and avoid excessive temperature rise of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of a linear motor mover according to an embodiment of the present invention;

[0023] Figure 2 is a schematic cross-sectional structural diagram of a linear motor mover according to an embodiment of the present invention;

[0024] Figure 3 for Figure 2 The enlarged structure diagram at A;

[0025] Figure 4 This is an internal structure diagram of a linear motor mover according to an embodiment of the present invention;

[0026] Figure 5 This is a structural diagram of a cooling assembly of a linear motor mover according to an embodiment of the present invention;

[0027] Figure 6 It is an assembly structure diagram of a linear motor mover according to an embodiment of the present invention;

[0028] Figure 7 A three-dimensional structural diagram of a cooling jacket of a linear motor mover according to an embodiment of the present invention;

[0029] Figure 8 for Figure 7 An enlarged cross-sectional view of the structure at B;

[0030] Fig. 9 A three-dimensional structural diagram of a connecting piece of a linear motor mover according to an embodiment of the present invention;

[0031] Fig.10 This is a three-dimensional structural diagram of a cooling joint of a linear motor mover according to an embodiment of the present invention.

[0032] The reference numerals are:

[0033] 1. Mover core; 2. Coil winding; 3. Cooling jacket; 4. Connecting piece; 5. Coolant channel; 6. Adapter; 7. Adapter interface; 8. Cooling joint; 9. Water inlet joint; 10. Adapter groove. DETAILED DESCRIPTION

[0034] See also Figures 1 to 10As shown, according to an embodiment of the present invention, the linear motor rotor includes a rotor core 1, a coil winding 2 and an annular cooling jacket 3. The cooling jacket 3 is arranged outside the rotor core 1 and is located between the coil winding 2 and the rotor core 1 to separate the rotor core 1 and the coil winding 2.

[0035] The linear motor rotor is separated from the coil winding 2 and the rotor core 1 by an annular cooling sleeve 3, and can effectively cool the coil winding 2 and cool the core yoke at the same time, forming a core-winding-cooling sleeve module. The winding and assembly are simple and easy, which can effectively improve the heat dissipation performance of the motor and avoid excessive temperature rise of the motor.

[0036] The linear motor mover in this embodiment utilizes an annular cooling sleeve 3 to replace the insulating frame in the prior art, so no additional space is required. On the basis of being able to effectively replace the insulating frame, the cooling capacity of the linear motor mover is greatly improved, and the working performance of the linear motor mover is improved.

[0037] The linear motor mover also includes a connecting piece 4, which connects two adjacent cooling jackets 3. The cooling jackets 3 are connected by the connecting piece 4 to form a plurality of connected cooling jackets 3, so that the cooling jackets 3 form an integral structure, and the coil windings 2 and the mover core 1 are cooled as a whole. The connecting piece 4 can be used to further improve the cooling effect, and the transmission of the coolant is more convenient. A flow path of the coolant can be formed between the plurality of cooling jackets, and the area through which the coolant flows can be effectively cooled.

[0038] In this embodiment, each individual cooling jacket 3 is a separate unit, so a split cooling structure can be formed, and these split cooling structures can be connected to form a cooling channel through the connecting piece 4. Since the cooling jacket 3 is a separate unit, the cooling structure can be modularized, thereby simplifying the assembly process of the coil winding 2 and the cooling structure and reducing the difficulty of assembly.

[0039] In this embodiment, the cooling sleeve 3 is connected through the connecting piece 4 to form a series of cooling channels. Therefore, it is only necessary to connect the coolant pipeline at the beginning and the end of the cooling channel connected in series by the cooling sleeve 3 and the connecting piece 4. There is no need for too many coolant joints, the structure is simpler, and the connection is more convenient.

[0040] In this embodiment, there are multiple connecting pieces 4, and the connecting pieces 4 located on the first side are arranged at intervals and connect two adjacent cooling jackets 3 on this side, and the cooling jackets 3 connected by each connecting piece 4 are different; the connecting pieces 4 located on the second side are arranged at intervals and connect two adjacent cooling jackets 3 on this side, and the cooling jackets 3 connected by each connecting piece 4 are different; the cooling jackets 3 connected by the connecting piece 4 located on the first side and the cooling jackets 3 connected by the connecting piece 4 located on the second side are connected in series in an S shape through the connecting piece 4.

[0041] For example, the first connecting piece 4 located on the first side connects the first and second cooling jackets 3, the first connecting piece 4 located on the second side connects the second and third cooling jackets 3, the second connecting piece 4 located on the first side connects the third and fourth cooling jackets 3, the second connecting piece 4 located on the second side connects the fourth and fifth cooling jackets 3, and so on, thereby forming an S-shaped cooling channel. When coolant is introduced into the cooling jacket 3, the coolant flows along the S-shaped cooling channel to fully cool the rotor core 1 and the coil winding 2, thereby effectively improving the internal heat dissipation capacity of the motor and ensuring the normal operation of the motor.

[0042] In another embodiment, there are two connecting pieces 4, each of which includes a plurality of connecting channels arranged at intervals, and each connecting channel is connected to a different cooling jacket 3, wherein one of the connecting pieces 4 is connected to the first side of the cooling jacket 3, and the other connecting piece 4 is connected to the second side of the cooling jacket 3, and the cooling jacket 3 forms a series of S-shaped cooling channels through the two connecting pieces 4. In this embodiment, all the connecting pieces 4 located on the first side are integrated into an integral plate structure, on which a plurality of spaced connecting channels are formed, and each connecting channel is connected to two adjacent cooling jackets 3, thereby forming an S-shaped cooling channel. Since all the connecting channels are integrated on a plate structure, the number of components can be simplified. All the connecting pieces 4 located on the second side can also be integrated into an integral plate structure.

[0043] Preferably, the cooling sleeve 3 is hollow to form an annular coolant channel 5, so that the coolant can fully exchange heat with the coil winding 2 and the rotor core 1 during the flow process, so that the heat of the coil winding 2 and the rotor core 1 can be discharged in time, further improving the heat dissipation capacity of the linear motor rotor.

[0044] Preferably, the connecting piece 4 and the cooling jacket 3 are connected by plug-in fitting, which can simplify the connection structure between the connecting piece 4 and the cooling jacket 3, making it easier to fit the two and achieving a higher assembly effect.

[0045] In this embodiment, the connecting piece 4 includes two adapters 6, and an adapter port 7 communicating with the coolant channel 5 is respectively provided on both sides of the cooling jacket 3, and the adapter 6 is plugged into the adapter port 7. One adapter 6 of the connecting piece 4 is plugged into the adapter port 7 on one side of the cooling jacket 3, and the adapter port 7 is communicated with the coolant channel 5. Therefore, when the connecting piece 4 delivers the coolant to the adapter port 7, it can be delivered to the coolant channel 5 through the adapter port 7, so that the coolant can circulate in the cooling jacket 3.

[0046] Preferably, the connecting piece 4 and the cooling jacket 3 are sealed at the plug-in position by welding or waterproof glue, which can further improve the sealing performance of the connecting piece 4 and the cooling jacket 3 at the plug-in position and prevent the coolant leakage problem.

[0047] The adapter 7 is rectangular, circular or elliptical, and the shape of the adapter 6 matches the shape of the adapter 7, thereby ensuring a good matching relationship between the adapter 6 and the adapter 7.

[0048] The height of the cooling jacket 3 is less than or equal to the tooth length of the mover core 1. Preferably, the height of the cooling jacket 3 is equal to the tooth length of the mover core 1, which can maximize the cooling effect and ensure the uniformity of the winding.

[0049] The connecting piece 4 and the cooling jacket 3 are made of hard aluminum alloy AL7075, which not only has good thermal conductivity and high hardness, but also has the advantage of light weight, and can reduce the weight of the entire motor.

[0050] Preferably, the connecting piece 4 is attached to the yoke of the mover core 1 and can cooperate with the cooling sleeve 3 to form a more effective cooling effect on the yoke of the mover core 1 .

[0051] Preferably, the linear motor mover further includes a cooling joint 8 , and the cooling joint 8 is connected to the cooling jacket 3 through a connecting piece 4 .

[0052] In this embodiment, the cooling joint 8 includes a connected water inlet joint 9 and a transition groove 10 , the water inlet joint 9 is used to connect with a water inlet pipe or a water outlet pipe, and the connecting piece 4 is connected with the cooling joint 8 through the transition groove 10 .

[0053] By providing the cooling joint 8, the connection between the water inlet pipe or the water outlet pipe and the connecting piece 4 can be conveniently realized, the connection difficulty is reduced, and the connection efficiency is improved. The cooling joint 8 can be a hollow structure, wherein the hollow cavity is connected to both the water inlet joint 9 and the adapter groove 10, and the adapter 6 of the connecting piece 4 is inserted into the adapter groove 10 to realize the connection with the hollow cavity, and then realize the connection with the water inlet pipe or the water outlet pipe.

[0054] According to an embodiment of the present invention, the linear motor includes a linear motor mover, and the linear motor mover is the linear motor mover mentioned above.

[0055] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0056] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention, and these improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A linear motor mover, characterized in that: The invention comprises a moving core (1), a coil winding (2) and an annular cooling jacket (3), wherein the cooling jacket (3) is sleeved outside the moving core (1) and is located between the coil winding (2) and the moving core (1) so as to separate the moving core (1) and the coil winding (2); The linear motor mover further comprises a connecting piece (4), wherein the connecting piece (4) connects two adjacent cooling sleeves (3); The cooling jackets (3) are connected via the connecting piece (4) to form a series of cooling channels; the cooling jackets (3) are hollow to form an annular coolant channel (5); There are two connecting pieces (4), each connecting piece (4) comprises a plurality of connecting channels arranged at intervals, each connecting channel is connected to a different cooling jacket (3), one connecting piece (4) is connected to a first side of the cooling jacket (3), and the other connecting piece (4) is connected to a second side of the cooling jacket (3), and the cooling jacket (3) forms an S-shaped cooling channel connected in series through the two connecting pieces (4).

2. The linear motor mover according to claim 1, characterized in that: The connecting piece (4) is connected to the cooling sleeve (3) by plug-fitting.

3. The linear motor mover according to claim 2, characterized in that: The connecting piece (4) comprises two adapters (6), and an adapter port (7) communicating with the coolant channel (5) is respectively provided on both sides of the cooling jacket (3), and the adapter (6) is plugged into the adapter port (7).

4. The linear motor mover according to claim 2, characterized in that: The connecting piece (4) and the cooling jacket (3) are sealed at the plug-in position by welding or waterproof glue.

5. The linear motor mover according to claim 3, characterized in that: The adapter (7) is rectangular, circular or elliptical, and the shape of the adapter (6) matches the shape of the adapter (7).

6. The linear motor mover according to claim 1, characterized in that: The height of the cooling jacket (3) is less than or equal to the tooth length of the mover core (1).

7. The linear motor mover according to claim 1, characterized in that: The connecting piece (4) and the cooling jacket (3) are made of hard aluminum alloy AL7075.

8. The linear motor mover according to claim 1, characterized in that: The connecting piece (4) is attached to the yoke of the mover core (1).

9. The linear motor mover according to any one of claims 1 to 8, characterized in that: The linear motor mover also includes a cooling joint (8), and the cooling joint (8) is connected to the cooling sleeve (3) through the connecting piece (4).

10. The linear motor mover according to claim 9, characterized in that: The cooling joint (8) comprises a connected water inlet joint (9) and a transfer groove (10), wherein the water inlet joint (9) is used to be connected to a water inlet pipe or a water outlet pipe, and the connecting piece (4) is connected to the cooling joint (8) via the transfer groove (10).

11. A linear motor, comprising a linear motor mover, characterized in that: The linear motor mover is the linear motor mover according to any one of claims 1 to 10.

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