Direct Drive Transfer System

Abstract

The present invention provides a direct drive transport system that includes a primary assembly and a secondary assembly. [Solution] The primary assembly includes a connection unit, a first primary unit, and a second primary unit, and the secondary assembly includes a first secondary unit and a second secondary unit, the connection unit includes opposing first and second ends, a plurality of first primary units are sequentially distributed at the first end of the connection unit, and a plurality of second primary units are sequentially distributed at the second end of the connection unit, the secondary assembly is movable relative to the primary assembly, the first primary unit faces toward the first secondary unit and the second primary unit faces toward the second secondary unit, a first magnetic field loop is formed between the first primary unit and the first secondary unit, and a second magnetic field loop is formed between the second primary unit and the second secondary unit.

Description

[Technical field]

[0001] The present invention relates to the technical field of motor drives, and more particularly to direct drive transport systems. [Background technology]

[0002] Direct drive refers to a new type of motor that is directly connected to the motion executing part, that is, the motor directly drives the machine operation, without any intermediate mechanical transmission part. The application of direct drive includes linear motion members with linear motors as the core driving element, and rotary motion elements with torque motors as the core driving element.

[0003] Current direct drive systems have the following advantages:

[0004] (1) In terms of equipment life, the direct drive system reduces mechanical transmission parts, reduces wear, improves equipment life, and saves energy.

[0005] (2) The direct drive system cancels mechanical transmission, thereby reducing failure rates, saving parts and manufacturing costs, and further reducing the overall cost of the equipment.

[0006] (3) The direct drive system greatly improves the processing efficiency of the equipment and effectively improves the processing accuracy.

[0007] However, current direct drive systems also have the following drawbacks:

[0008] In order to form a magnetic field loop between the primary assembly fixed to the stator and the secondary assembly fixed to the mover, the current-carrying coil of the primary assembly interacts with the magnetic field loop to drive the mover to move along a predetermined trajectory, it is necessary to pot and fix the coil and the iron core of the primary assembly with mounting parts, and then fix the primary assembly to the stator, which makes the fixing method of the primary assembly complicated and inconvenient to assemble. Summary of the Invention [Problem to be solved by the invention]

[0009] The present invention aims to solve at least one of the technical problems existing in the prior art, and to provide a new technical solution for a direct drive transport system. [Means for solving the problem]

[0010] According to one aspect of the present invention, there is provided a direct drive transport system, the direct drive transport system including a primary assembly and a secondary assembly, the primary assembly including a connection unit, a first primary unit, and a second primary unit, the secondary assembly including a first secondary unit and a second secondary unit; the connection unit includes a first end and a second end opposite to each other, a plurality of the first primary units are sequentially distributed on the first end of the connection unit, a plurality of the second primary units are sequentially distributed on the first end of the connection unit, the connection unit is used to fix the primary assembly; The secondary assembly is movable relative to the primary assembly, the first primary unit moves toward the first secondary unit and the second primary unit moves toward the second secondary unit, a first magnetic field loop is formed between the first primary unit and the second secondary unit, and a second magnetic field loop is formed between the second primary unit and the second secondary unit.

[0011] Preferably, each of the first primary units includes a first iron core and a first coil, One end of the first iron core is fixed to a first end of the connection unit, and the first coil is fitted onto the other end of the first iron core, and / or each of the second primary units includes a second core and a second coil; One end of the second iron core is fixed to the second end of the connection unit, and the second coil is fitted onto the other end of the second iron core.

[0012] Preferably, the first iron core, the connection unit and the second iron core are integrally formed.

[0013] Preferably, the first secondary unit includes a first magnetic yoke and a first magnetic steel, an even number of the first magnetic steels are provided on the first magnetic yoke, and the polarities of the adjacent first magnetic steels are different, and the first magnetic steels face the first iron core; The second secondary unit includes a second magnetic yoke and a second magnetic steel, an even number of second magnetic steel pieces are provided on the second magnetic yoke, and adjacent second magnetic steel pieces have different polarities, and the second magnetic steel pieces face toward the second iron core.

[0014] Preferably, the direct drive transport system further includes a mover, the mover is provided with a groove, the groove includes a first inner side surface and a second inner side surface facing each other, the first secondary unit is provided on the first inner side surface, and the second secondary unit is provided on the second inner side surface; At least a portion of the primary assembly is fitted into the recess.

[0015] Preferably, the device further includes a base and a support, the support being fixed to the base, and the connection unit being fixed to the support.

[0016] Preferably, the connection unit is provided with a plurality of spaced apart mounting holes through which bolts pass to secure the primary assembly to the support.

[0017] Preferably, the direct drive transport system further includes a position control assembly, the position control assembly including a slider and a guide rail; The guide rail is fixed to the base, the first primary unit or the second primary unit is either distributed along a first direction, the guide rail extends along the first direction, the slider is fixed to the mover, the slider is attached to the guide rail and is movable along the direction in which the guide rail extends.

[0018] Preferably, at least a portion of the first direction is a linear direction.

[0019] Preferably, the slider includes a first slide groove and a second slide groove facing each other, and the guide rail includes a first protrusion and a second protrusion extending in opposite directions, The first protrusion is fitted into the first slide groove, and the second protrusion is fitted into the second slide groove. Effect of the Invention

[0020] One technical effect of the present invention is as follows:

[0021] In the direct drive conveying system of the present invention, the primary assembly includes a connection unit, a first primary unit, and a second primary unit, and the secondary assembly includes a first secondary unit and a second secondary unit. The connection unit can firmly fix the primary assembly to a target structure, such as a stator or a support, which not only has a simple fixing method and is convenient to assemble, but also contributes to ensuring the fixing stability of the primary unit and improving the overall structural strength of the direct drive conveying system.

[0022] Furthermore, the connection unit includes a first end and a second end facing each other, the first primary units are sequentially distributed on the first end of the connection unit, the second primary units are sequentially distributed on the first end of the connection unit, the first primary units face the first secondary units, the second primary units face the second secondary units, a first magnetic field loop is formed between the first primary units and the second secondary units, and a second magnetic field loop is formed between the second primary units and the second secondary units. Since the first magnetic field loop and the second magnetic field loop are formed between the primary assembly and the secondary assembly, the electromagnetic thrust received by the secondary assembly can be greatly improved, and the dynamic performance is excellent. [Brief description of the drawings]

[0023] [Figure 1] 1 is a structural schematic diagram of a direct drive transport system according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a side view of the direct drive transport system according to the embodiment of the present invention. [Diagram 3] FIG. 2 is a schematic diagram showing the positional relationship between a primary assembly and a secondary assembly of the direct drive transport system according to the embodiment of the present invention. [Figure 4] FIG. 4 is a detailed enlarged view of a portion A in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Various exemplary embodiments of the present application will be described in detail below with reference to the drawings. It should be noted that, unless otherwise specified, the relative arrangement of the components and steps described in these embodiments, numerical expressions and values ​​do not limit the scope of the present application.

[0025] Hereinafter, the embodiments of the present application will be described in detail, and examples of the embodiments are illustrated in the drawings, in which the same or similar reference numerals throughout refer to the same or similar elements or elements having the same or similar functions. It should be understood that the embodiments described below with reference to the drawings are illustrative and are only for the purpose of explaining the present application, and do not limit the present application. Any other embodiments that a person skilled in the art can come up with based on the embodiments in the present application without requiring creative efforts shall fall within the scope of protection of the present application.

[0026] The terms "first" and "second" features in the present specification and claims may explicitly or implicitly include one or more of those features. In the present description, unless otherwise specified, "plurality" means two or more than two. Also, in the specification and claims, "and / or" refers to at least one of the connected objects, and the character " / " generally indicates that the related objects before and after are in an "or" relationship.

[0027] In the description of the present application, the orientations or positional relationships indicated by the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial direction," "radial direction," "circumferential direction," and the like are orientations or positional relationships shown based on the drawings, and are merely for the convenience of explaining and simplifying the description of the present application, and are not intended to indicate or imply that the indicated devices or elements have a specific orientation or are required to be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present application.

[0028] In the description of this application, unless otherwise specified and limited, the terms "attached," "connected," and "coupled" should be understood in a broad sense, and may refer to, for example, a fixed connection, a removable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, or internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0029] 1 to 4, the present invention provides a direct drive conveyance system for realizing a work table fixed to a mover 3 to move along a predetermined trajectory, for example, along a linear trajectory. Naturally, the movement trajectory of the work table can be set according to actual needs, and the movement trajectory may be, but is not limited to, a linear trajectory.

[0030] 1 and 2, the direct drive conveying system includes a primary assembly and a secondary assembly, the primary assembly includes a connection unit 11, a first primary unit 12, and a second primary unit 13, and the secondary assembly includes a first secondary unit 21 and a second secondary unit 22. Here, the connection unit 11 is used to fix the primary assembly to a structure such as a support base 4 or a stator, thereby realizing that the mover 3 and thus the work table are moved by the secondary unit so as to move stably.

[0031] More specifically, the connection unit 11 includes a first end and a second end opposite to each other, a plurality of first primary units 12 are sequentially distributed at the first end of the connection unit 11, a plurality of second primary units 13 are sequentially distributed at the second end of the connection unit 11, and the connection unit 11 is used to fix the primary assembly. On the one hand, the distribution form of the primary assembly is optimized, which is conducive to increasing the distribution area of ​​the primary assembly and forming two magnetic field loops between the primary assembly and the secondary assembly, which is conducive to well improving the electromagnetic thrust of the secondary assembly and improving the dynamic performance of the direct drive conveying system.

[0032] 3 and 4, the secondary assembly can be moved relative to the primary assembly, the first primary unit 12 moves toward the first secondary unit 21, the second primary unit 13 moves toward the second secondary unit 22, a first magnetic field loop 100 is formed between the first primary unit 12 and the first secondary unit 21, and a second magnetic field loop 200 is formed between the second primary unit 13 and the second secondary unit 22. The specific structure of the secondary assembly corresponds to the specific structure of the primary assembly, which can ensure that the secondary assembly receives a strong and stable electromagnetic thrust.

[0033] Therefore, in the direct drive conveying system of the present invention, the primary assembly includes a connection unit 11, a first primary unit 12, and a second primary unit 13, and the secondary assembly includes a first secondary unit 21 and a second secondary unit 22. The connection unit 11 can firmly fix the primary assembly to a target structure, such as a stator or a support 4, which not only simplifies the fixing method and facilitates assembly, but also helps to ensure the fixing stability of the primary units and improves the overall structural strength of the direct drive conveying system.

[0034] Furthermore, the connection unit 11 includes a first end and a second end facing each other, a plurality of first primary units 12 are sequentially distributed at the first end of the connection unit 11, a plurality of second primary units 13 are sequentially distributed at the second end of the connection unit 11, the first primary unit 12 faces the first secondary unit 21, the second primary unit 13 faces the second secondary unit 22, a first magnetic field loop 100 is formed between the first primary unit 12 and the first secondary unit 21, and a second magnetic field loop 200 is formed between the second primary unit 13 and the second secondary unit 22. Since the first magnetic field loop 100 and the second magnetic field loop 200 are formed between the primary assembly and the secondary assembly, the electromagnetic thrust force received by the secondary assembly can be greatly improved, and the dynamic performance is excellent.

[0035] Preferably, each of the first primary units 12 includes a first iron core 121 and a first coil 122, One end of the first iron core 121 is fixed to a first end of the connection unit 11, and the first coil 122 is fitted onto the other end of the first iron core 121. and / or each second primary unit 13 includes a second core 131 and a second coil 132; One end of the second iron core 131 is fixed to the second end of the connection unit 11 , and the second coil 132 is fitted onto the other end of the second iron core 131 .

[0036] In addition, adjacent primary units are distributed with a gap between them. The first primary unit 12 needs to extend along the direction of the predetermined moving trajectory of the mover 3, thereby ensuring the accuracy of the movement of the mover 3, and at the same time, the second primary unit 13 also needs to extend along the direction of the predetermined moving trajectory of the mover 3, thereby ensuring the accuracy of the movement of the mover 3. The extension directions of the first primary unit 12 and the second primary unit 13 are the same, which not only can ensure the electromagnetic thrust of the secondary assembly, but also contribute to ensuring the stability of the movement of the secondary assembly relative to the primary assembly.

[0037] In addition, during the process of the secondary assembly moving relative to the primary assembly, the secondary unit can cooperate well with the primary unit, thereby forming a magnetic field loop between the secondary assembly and the primary assembly to ensure the electromagnetic thrust of the secondary assembly, and allowing the secondary assembly to move more smoothly with the interaction of the magnetic field loop and the primary assembly.

[0038] In the above embodiment, by simplifying the structure of the first primary unit 12 and the second primary unit 13 and optimizing the distribution manner of the first primary unit 12 and the second primary unit 13, the structure of the direct drive conveying system is well optimized, which is conducive to improving the stability of cooperation between the primary assembly and the secondary assembly.

[0039] Preferably, the first iron core 121, the connection unit 11 and the second iron core 131 are integrally formed. On the one hand, this makes the structure of the primary assembly very simple, which contributes to saving the processing cost; on the other hand, it can ensure the stability of the connection between the first primary unit 12 and the second primary unit 13 and the connection unit 11, and ensure the structural strength and reliability of the entire direct drive conveying system. On the third hand, it can help realize that the first coil 122 can be quickly fitted on the outside of the first iron core 121, and the second coil 132 can be quickly fitted on the outside of the second iron core 131, which can improve the assembly speed of the primary assembly and the processing efficiency of the direct drive conveying system.

[0040] Preferably, the first secondary unit 21 includes a first magnetic yoke 211 and a first magnetic steel 212, an even number of the first magnetic steel 212 are provided on the first magnetic yoke 211, and the polarities of the adjacent first magnetic steel 212 are different, and the first magnetic steel 212 faces the first iron core 121, The second secondary unit 22 includes a second magnetic yoke 221 and a second magnetic steel 222, an even number of the second magnetic steels 222 are provided on the second magnetic yoke 221, and adjacent second magnetic steels 222 have different polarities, and the second magnetic steels 222 face toward the second iron core 131.

[0041] The even number of magnetic steel pieces ensures that a stable magnetic field loop is formed between the primary assembly and the secondary assembly during the process of the secondary assembly moving. Meanwhile, the first magnetic steel piece 212 is fixed to the first magnetic yoke 211, and the second magnetic steel piece 222 is fixed to the second magnetic yoke 221, and the fixing method is relatively simple.

[0042] In some embodiments, a predetermined distance is formed between two adjacent first magnetic steels 212 and between two adjacent second magnetic steels 222, respectively, thereby contributing to forming a magnetic field loop between the primary assembly and the secondary assembly.

[0043] Referring to Figures 3 and 4, the magnetic flux passes through the first first magnetic steel 212, the first iron core 121, the adjacent second first magnetic steel 212, and the first magnetic yoke 211 in sequence, before flowing into the first first magnetic steel 212 to form a first magnetic field loop 100; at the same time, the magnetic flux passes through the first second magnetic steel 222, the second iron core 131, the adjacent second second magnetic steel 222, and the second magnetic yoke 221 in sequence, before flowing into the first second magnetic steel 222 to form a second magnetic field loop 200, so that the direct drive conveying system can generate a strong electromagnetic thrust and has better power performance.

[0044] Preferably, the direct drive conveying system further includes a mover 3, the mover 3 is provided with a groove 31, the groove 31 includes a first inner surface and a second inner surface facing each other, the first secondary unit 21 is provided on the first inner surface, and the second secondary unit 22 is provided on the second inner surface. The structural design of the mover 3 is very reasonable, which not only contributes to firmly mounting the secondary assembly on the mover 3, but also simplifies the cooperation structure between the primary assembly and the secondary assembly, and ensures that the magnetic field loop formed between the primary assembly and the secondary assembly has high electromagnetic thrust to well urge the secondary assembly to move along a predetermined trajectory, and also contributes to improving the stability of the secondary assembly during its movement.

[0045] In the embodiment of the present application, at least a part of the primary assembly is fitted into the groove 31. Of course, the primary assembly may be entirely fitted into the groove 31, so as to better improve the cooperation area between the primary assembly and the secondary assembly and ensure the strength and stability of the electromagnetic thrust received by the secondary assembly.

[0046] Preferably, referring to FIG. 2, the device further includes a base 5 and a support 4 , the support 4 is fixed to the base 5 , and the connection unit 11 is fixed to the support 4 .

[0047] In the above embodiment, the support platform 4 can well fix the primary assembly and ensure the stability of the primary assembly, and the base platform 5 contributes to stably fixing the support platform 4 in a predetermined position, thereby ensuring the stability and reliability of the entire direct drive conveying system.

[0048] The support base 4 corresponds to a stator in this application, and the primary assembly is fixed to the support base 4, providing high stability.

[0049] Preferably, the connection unit 11 is provided with a plurality of mounting holes spaced apart from one another, and the bolts 6 pass through the mounting holes to fasten the primary assembly to the support base 4. This makes it possible to very simply fasten the primary assembly to the support base 4, and at the same time, facilitates rapid assembly between the primary assembly and the support base 4, thereby improving assembly efficiency. Here, the mounting holes are punched into the connection unit 11, and the forming method is simple.

[0050] In other embodiments, the connection unit 11 may be locked to the support base 4 by a locking structure, and it should be understood that the connection unit 11 may also be directly welded to the support base 4, thereby significantly improving the stability and robustness of the connection between the primary assembly and the support base 4.

[0051] Preferably, referring to FIGS. 2 to 4, the direct drive transport system further includes a position control assembly, the position control assembly including a slider 71 and a guide rail 72; The guide rail 72 is fixed to the base 5, the first primary unit 12 or the second primary unit 13 is either distributed along a first direction, the guide rail 72 extends along the first direction, and the slider 71 is fixed to the movable element 3, the slider 71 is attached to the guide rail 72, and can move along the direction in which the guide rail 72 extends.

[0052] In addition, the guide rail 72 moves along the direction in which the first primary unit 12 or the second primary unit 13 is distributed, which contributes to realizing the secondary assembly to move the work table along a predetermined trajectory, and improves the accuracy of the movement of the work table.

[0053] In addition, the guide rail 72 fits into the slider 71, helping to accurately guide the movement direction of the mover 3 and at the same time helping to reduce the movement resistance of the mover 3, thereby enabling the mover 3 to move the work table accurately and stably along a predetermined trajectory.

[0054] Preferably, at least a part of the first direction is a linear direction, so that the mover 3 can move the work table along a linear direction, which meets the demand of the work table processing and is easy to operate.

[0055] In other embodiments, the first direction may further include a portion that is an arc direction, for example, when the work table needs to turn, guide rail 72 segments distributed along a semicircular direction and primary assemblies distributed along a semicircular direction may be provided, which need to be set according to the predetermined trajectory of the work table, so as to better meet the movement demands of the work table and improve the driving efficiency and effectiveness of the direct drive conveying system.

[0056] Preferably, the slider 71 includes a first slide groove 711 and a second slide groove 712 facing each other, and the guide rail 72 includes a first protrusion 721 and a second protrusion 722 extending in opposite directions. The first protrusion 721 is fitted into the first slide groove 711 , and the second protrusion 722 is fitted into the second slide groove 712 .

[0057] In the above embodiment, the first protrusion 721 is fitted into the first slide groove 711, and the second protrusion 722 is fitted into the second slide groove 712, which not only realizes accurate positional control of the movable member 3, but also contributes to ensuring stability during the movement of the movable member 3.

[0058] Therefore, the direct drive conveying system provided by the present invention has a reasonable design, a simple fixing method, high dynamic performance, simple structure, and low cost.

[0059] It is understood that the above embodiments are merely exemplary embodiments used to explain the principles of the present invention, and the present invention is not limited thereto. Those skilled in the art can make various modifications and improvements without departing from the technical spirit and substance of the present invention, and these modifications and improvements are also considered to be within the protection scope of the present invention. [Explanation of symbols]

[0060] 100 First magnetic field loop 200 Second magnetic field loop 11 Connection unit 12 First Primary Unit 121 First iron core 122 First coil 13 Second Primary Unit 131 Second iron core 132 Second coil 21 1st Secondary Unit 211 First magnetic yoke 212 1st magnetic steel 22 Secondary Unit 221 Second magnetic yoke 222 2nd magnetic steel 3 Mover 31 Groove 4 Support stand 5 Base 6 Volts 71 Slider 711 First slide groove 712 Second slide groove 72 Guide rail 721 1st protrusion 722 2nd protrusion

Claims

1. A direct drive transport system including a primary assembly, a secondary assembly, a base, and a support platform, the primary assembly includes a connection unit, a first primary unit, and a second primary unit; the secondary assembly includes a first secondary unit and a second secondary unit; The support base is fixed to the base, The connection unit is fixed to the support base, the connection unit includes opposing first and second ends; A plurality of the first primary units are sequentially distributed at a first end of the connection unit; a plurality of said second primary units are sequentially distributed at a second end of said connection unit; the connection unit is used to fasten the primary assembly to the support base; the secondary assembly is movable relative to the primary assembly; the first primary unit faces the first secondary unit; the second primary unit faces the second secondary unit; a first magnetic field loop is formed between the first primary unit and the first secondary unit, and a second magnetic field loop is formed between the second primary unit and the second secondary unit; the first end and the second end of the connection unit face each other in a direction perpendicular to a moving direction of the secondary assembly; The direct drive transport system further includes a position control assembly and a movable element, the position control assembly including a slider and a guide rail, the secondary assembly is provided on the movable element, the guide rail is fixed to the base, the first primary unit or the second primary unit is both distributed along a first direction, the guide rail extends along the first direction, the slider is fixed to the movable element, the slider is attached to the guide rail and is movable along the direction in which the guide rail extends.

2. Each of the first primary units includes a first iron core and a first coil, One end of the first iron core is fixed to a first end of the connection unit, and the first coil is fitted onto the other end of the first iron core, and / or each of the second primary units includes a second core and a second coil; One end of the second iron core is fixed to the second end of the connection unit, The second coil is fitted onto the other end of the second iron core.

2. The direct drive transport system according to claim 1.

3. The first iron core, the connection unit, and the second iron core are integrally formed.

3. The direct drive transport system according to claim 2.

4. the first secondary unit includes a first magnetic yoke and a first magnetic steel; The even number of first magnetic steel pieces are provided on the first magnetic yoke, and the polarities of adjacent first magnetic steel pieces are different, and the first magnetic steel pieces face the first iron core, the second secondary unit includes a second magnetic yoke and a second magnetic steel; The even number of second magnetic steel pieces are provided on the second magnetic yoke, and adjacent second magnetic steel pieces have different polarities; The second magnetic steel faces the second iron core.

3. The direct drive transport system according to claim 2.

5. The movable member is provided with a groove, The groove includes a first inner surface and a second inner surface opposed to each other, The first secondary unit is disposed on the first inner surface, The second secondary unit is disposed on the second inner surface, At least a portion of the primary assembly is fitted into the recessed groove.

5. The direct drive transport system according to claim 4.

6. The connection unit has a plurality of mounting holes spaced apart from one another, Bolts pass through the mounting holes to secure the primary assembly to the support base.

2. The direct drive transport system according to claim 1.

7. At least a portion of the first direction is a linear direction.

2. The direct drive transport system according to claim 1.

8. The slider includes a first slide groove and a second slide groove opposed to each other, The guide rail includes a first protrusion and a second protrusion extending in opposite directions, The first protrusion is fitted into the first slide groove, The second protrusion is fitted into the second slide groove.

2. The direct drive transport system according to claim 1.

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