Linear motor module

Abstract

The utility model provides a linear motor module, and relates to the technical field of linear modules. The linear motor module comprises a module body, a sliding table, a linear motor and a controller, the sliding table is slidably connected with the module body, and a first mounting groove is formed in the sliding table; the linear motor comprises a stator and a rotor which are oppositely arranged, the stator is arranged on the module body, the rotor is connected with the sliding table, and the rotor is used for moving relative to the stator in the preset direction so as to drive the sliding table to slide relative to the module body in the preset direction; the controller is arranged on the sliding table and located in the first mounting groove, and the controller is electrically connected with the rotor. According to the linear motor module provided by the invention, driving and control integration is realized, so that cables between the controller and the linear motor can be shortened and reduced, the influence of electromagnetic interference in an external environment is effectively reduced, and the operation stability of the linear motor module is improved.

Description

Technical Field

[0001] This application relates to the field of linear module technology, and more particularly to a linear motor module. Background Technology

[0002] The information disclosed in this background section is intended only to enhance the understanding of the general background of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art.

[0003] A linear motor module is a transmission device that can drive a load to perform linear motion. In existing linear motor modules, the linear motor acts as the driver for sliding a slide, and is usually controlled by a controller. However, the controller is independent of the linear motor module, and the controller and the linear motor are connected by complex cables. This makes the control signal susceptible to electromagnetic interference from the external environment during transmission, thus affecting the operational stability of the linear motor module. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a linear motor module that aims to solve the technical problem that the control signals sent by the controller to the linear motor are easily affected by electromagnetic interference from the external environment.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] Embodiments of this application provide a linear motor module, including:

[0007] Module body;

[0008] A slide table is slidably connected to the module body, and a first mounting groove is provided on the slide table;

[0009] A linear motor includes a stator and a mover arranged opposite to each other. The stator is disposed on the module body, and the mover is connected to the slide table. The mover is used to move relative to the stator in a preset direction to drive the slide table to slide relative to the module body in the preset direction.

[0010] The controller is mounted on the slide and located in the first mounting slot, and the controller is electrically connected to the actuator.

[0011] In one embodiment, the linear motor module further includes a first sealant layer connected to the slide to seal the first mounting groove.

[0012] In one embodiment, the linear motor module further includes a magnetic grating ruler and a magnetic grating reading head disposed opposite to each other. The magnetic grating ruler is disposed on the module body, a second mounting groove is provided on the slide, and the magnetic grating reading head is disposed on the slide and located in the second mounting groove. The magnetic grating reading head is electrically connected to the controller.

[0013] In one embodiment, the linear motor module further includes a second sealant layer connected to the slide to seal the second mounting groove.

[0014] In one embodiment, the preset direction is vertical, and the linear motor module further includes an elastic element disposed on the module body and connected to the slide. The elastic element is used to apply a force to the slide, and the direction of the force is opposite to the direction of the gravity acting on the slide.

[0015] In one embodiment, the elastic element is a magnetic spring, which includes a magnetic shaft and a magnetic sleeve. The magnetic shaft is slidably disposed through the magnetic sleeve and connected to the module body, and the magnetic sleeve is connected to the slide table.

[0016] In one embodiment, the module body includes a base, a first end plate, and a second end plate. The slide is slidably connected to the base, and the stator is disposed on the base. The first end plate is connected to one end of the base along the preset direction, and the second end plate is connected to the other end of the base along the preset direction. The magnetic shaft is connected between the first end plate and the second end plate.

[0017] In one embodiment, the slide is provided with a first clearance groove, and a portion of the magnetic sleeve is located within the first clearance groove.

[0018] In one embodiment, the slide is provided with a second clearance groove that communicates with the first clearance groove, and the magnetic shaft is slidably disposed in the second clearance groove, with a portion of the magnetic shaft located within the second clearance groove.

[0019] In one embodiment, the linear motor module further includes a fixing member, which includes an arc-shaped portion and a connecting portion connected to each other. The connecting portion is connected to the slide table, and the arc-shaped portion abuts against the outer periphery of the magnetic sleeve.

[0020] The beneficial effects of this application are as follows:

[0021] The linear motor module provided in this application includes a module body, a slide table, a linear motor, and a controller. By placing the controller, which is electrically connected to the mover of the linear motor, on the slide table and located in the first mounting slot of the slide table, the controller is integrated into the linear motor module, thereby realizing integrated drive and control. This can shorten and reduce the cable between the controller and the linear motor, effectively reduce the influence of electromagnetic interference in the external environment, and improve the operational stability of the linear motor module.

[0022] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This paper shows a schematic diagram of the linear motor module from one perspective in one embodiment of the present application.

[0025] Figure 2 This paper shows a schematic diagram of the linear motor module from another perspective in one embodiment of the present application;

[0026] Figure 3 An exploded view of a linear motor module in one embodiment of this application is shown. Figure 1 ;

[0027] Figure 4 An exploded view of a linear motor module in one embodiment of this application is shown. Figure 2 .

[0028] Explanation of key component symbols:

[0029] 100 - Linear motor module; 110 - Module body; 111 - Base; 112 - First end plate; 113 - Second end plate; 120 - Slide table; 121 - First mounting slot; 122 - Second mounting slot; 123 - First clearance slot; 124 - Second clearance slot; 130 - Linear motor; 131 - Stator; 132 - Mover; 140 - Controller; 150 - Magnetic scale; 160 - Magnetic scale reading head; 170 - Elastic element; 171 - Magnetic shaft; 172 - Magnetic sleeve; 180 - Fixing element; 181 - Arc-shaped part; 182 - Connecting part; X - Preset direction. Detailed Implementation

[0030] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0031] In the description of this application, the terms "center", "longitudinal", "lateral", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0032] Furthermore, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Moreover, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this application, the terms "first," "second," etc., are used to distinguish different objects and should not be construed as indicating or implying a specific order or hierarchy, or implicitly specifying the number of technical features indicated. Therefore, a feature marked "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0034] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] In the description of this application, the term "and / or" indicates that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Additionally, the character " / " generally indicates that the preceding and following objects have an "or" relationship.

[0036] In the description of this application, "parallel" includes not only the case of absolute parallelism, but also the case of approximate parallelism as commonly understood in engineering; similarly, "perpendicular" also includes not only the case of absolute perpendicularity, but also the case of approximate perpendicularity as commonly understood in engineering. For example, if the angle between two directions is 80° to 90°, the two directions can be considered perpendicular; if the angle between two directions is 0° to 10°, the two directions can be considered parallel.

[0037] A linear motor module is a transmission device capable of driving a load to perform linear motion. In existing linear motor modules, the linear motor acts as the actuator that drives a slide table, and is typically controlled by a controller. However, the controller is independent of the linear motor module, and the connection between the controller and the linear motor is via complex cabling. This makes the control signal susceptible to electromagnetic interference from the external environment during transmission, thus affecting the operational stability of the linear motor module. Furthermore, when the linear motor module is applied to vertical motion scenarios, the direction of the driving force of the linear motor is parallel to the direction of gravity acting on the slide table and the load. During operation, the linear motor needs to overcome the gravity acting on the slide table and the load, thereby affecting the response speed and motion accuracy of the linear motor module.

[0038] To address the aforementioned technical problems, embodiments of this application provide a linear motor module, relating to the field of linear module technology, primarily used for outputting linear motion.

[0039] like Figures 1 to 3 As shown, the linear motor module 100 provided in this embodiment includes: module body 110, slide table 120, linear motor 130 and controller 140.

[0040] The slide table 120 is slidably connected to the module body 110, and a first mounting groove 121 is provided on the slide table 120; the linear motor 130 includes a stator 131 and a mover 132 arranged opposite to each other. The stator 131 is disposed on the module body 110, and the mover 132 is connected to the slide table 120. The mover 132 is used to move relative to the stator 131 along a preset direction X, so as to drive the slide table 120 to slide relative to the module body 110 along the preset direction X; the controller 140 is disposed on the slide table 120 and located in the first mounting groove 121, and the controller 140 is electrically connected to the mover 132.

[0041] For example, the controller 140 may be a printed circuit board (PCB) or a flexible printed circuit board (FPC), and no specific limitation is made on the type of controller 140 here.

[0042] It should be noted that the mover 132 of the linear motor 130 includes multiple electromagnetic coils, each of which is electrically connected to the controller 140. The stator 131 of the linear motor 130 includes multiple permanent magnets or multiple electromagnets arranged in a row. When alternating current or pulse current is applied to the electromagnetic coils through the controller 140, the mover 132 can generate a changing magnetic field. The changing magnetic field generated by the mover 132 interacts with the static magnetic field generated by the stator 131. According to electromagnetic induction and magnetic force, the mover 132 can be subjected to a force along the direction of the stator 131, thereby driving the slide table 120 to slide relative to the module body 110 in a preset direction X, thereby driving the load connected to the slide table 120 to perform linear motion.

[0043] It is understood that the linear motor module 100 provided in this embodiment integrates the controller 140, which is electrically connected to the mover 132 of the linear motor 130, into the linear motor module 100 by placing the controller 140 on the slide table 120 and within the first mounting slot 121 of the slide table 120. This achieves integrated drive and control, which can shorten and reduce the cable between the controller 140 and the linear motor 130, effectively reduce the influence of electromagnetic interference in the external environment, and improve the operational stability of the linear motor module 100.

[0044] In one embodiment, the linear motor module 100 further includes a first sealant layer, which is connected to the slide 120 to seal the first mounting groove 121.

[0045] It is understandable that the first mounting groove 121 is sealed by connecting the first sealant layer to the slide table 120. That is, after the controller 140 is assembled into the first mounting groove 121, the first mounting groove 121 is sealed by potting glue to reduce the impact of the external environment on the controller 140.

[0046] like Figure 1 As shown, in one embodiment, the linear motor module 100 further includes a magnetic grating ruler 150 and a magnetic grating reading head 160 disposed opposite to each other. The magnetic grating ruler 150 is disposed on the module body 110, and a second mounting groove 122 is provided on the slide table 120. The magnetic grating reading head 160 is disposed on the slide table 120 and located in the second mounting groove 122. The magnetic grating reading head 160 is electrically connected to the controller 140.

[0047] It should be noted that the magnetic scale 150 is a magnetic ruler with a regular arrangement of magnetic poles (usually alternating N and S poles), which serves as a position reference scale. The magnetic scale reading head 160 can detect changes in the magnetic field on the magnetic scale 150 in real time and convert them into electrical signals. The controller 140 can accurately determine the real-time position of the slide table 120 by decoding the magnetic signal of the magnetic scale 150 through the magnetic scale reading head 160. The controller 140 sends control signals to the linear motor 130, causing the mover 132 to generate a changing magnetic field, thereby producing corresponding motion.

[0048] Understandably, by integrating the controller 140 into the linear motor module 100, the cable between the controller 140 and the magnetic grating reading head 160 can be reduced and shortened, thereby further improving the operational stability of the linear motor module 100.

[0049] Furthermore, the linear motor module 100 also includes a second sealant layer, which is connected to the slide 120 to seal the second mounting groove 122.

[0050] It is understandable that the second mounting groove 122 is sealed by connecting the second sealant layer to the slide table 120. That is, after the magnetic grating reading head 160 is assembled into the first mounting groove 121, the second mounting groove 122 is sealed by potting glue, which can reduce the influence of the external environment on the magnetic grating reading head 160.

[0051] It should be noted that the materials of the first sealant layer and / or the second sealant layer can be epoxy resin, silicone sealant, polyurethane, acrylic sealant, hot melt adhesive, UV curing adhesive, etc., and no specific restrictions are imposed here.

[0052] Furthermore, the first mounting groove 121 and the second mounting groove 122 can be located on different sides of the slide table 120 or on the same side of the slide table 120, without any specific restrictions.

[0053] like Figure 1 and Figure 2 As shown, in one embodiment, the preset direction X is the vertical direction. The linear motor module 100 also includes an elastic element 170, which is disposed on the module body 110 and connected to the slide table 120. The elastic element 170 is used to apply a force to the slide table 120, and the direction of the force is opposite to the direction of the gravity acting on the slide table 120.

[0054] For example, the elastic element 170 can be a magnetic spring, a tension spring, a sheet, etc., without any specific limitations.

[0055] Understandably, by adding an elastic element 170 to apply a force opposite to the direction of gravity to the slide table 120, this force can balance the gravity of the slide table 120 and the load. In this way, during the operation of the linear motor module 100, the linear motor 130 does not need to overcome the gravity of the load and the slide table 120, and can focus more on high-precision position and speed control, thereby improving the response speed and motion accuracy of the linear motor module 100.

[0056] Of course, in other embodiments, the preset direction X can also be a horizontal direction or an inclined direction intersecting the horizontal direction, and no specific limitation is made here.

[0057] like Figure 2 and Figure 3 As shown, the elastic element 170 is a magnetic spring, which includes a magnetic shaft 171 and a magnetic sleeve 172. The magnetic shaft 171 is slidably disposed in the magnetic sleeve 172 and connected to the module body 110. The magnetic sleeve 172 is connected to the slide table 120.

[0058] Understandably, the magnetic shaft 171 of the magnetic spring contains permanent magnets or electromagnets arranged in a specific polarity (e.g., NSNS), and the magnetic sleeve 172 also contains permanent magnets or electromagnets with magnetic poles arranged corresponding to the magnetic shaft 171. The magnets in the magnetic shaft 171 and the magnetic sleeve 172 interact through magnetic fields. When the magnetic shaft 171 moves within the magnetic sleeve 172, the attraction or repulsion between the N and S poles of the magnets generates an almost constant force. Compared to the elastic force of a traditional tension spring, which varies with the amount of tension, the force exerted by the magnetic spring on the slide 120 remains constant, which can better balance the weight of the slide 120 and the load.

[0059] like Figures 2 to 4 As shown, the module body 110 further includes a base 111, a first end plate 112 and a second end plate 113, a slide 120 slidably connected to the base 111, a stator 131 disposed on the base 111, the first end plate 112 connected to one end of the base 111 along a preset direction X, the second end plate 113 connected to the other end of the base 111 along the preset direction X, and a magnetic shaft 171 connected between the first end plate 112 and the second end plate 113.

[0060] It is understandable that by setting the first end plate 112 and the second end plate 113, it is convenient to assemble the magnetic shaft 171 of the magnetic spring, so that the magnetic shaft 171 of the magnetic spring can be stably connected to the module body 110, thereby better balancing the gravity of the slide table 120 and the load.

[0061] like Figures 2 to 4 As shown, further, a first clearance groove 123 is provided on the slide table 120, and a part of the magnetic sleeve 172 is located in the first clearance groove 123.

[0062] It is understandable that by setting the first clearance groove 123, it can restrict the relative movement of the magnetic sleeve 172 and the slide table 120 along the axial direction, and can accommodate a part of the magnetic sleeve 172, thereby improving the structural compactness and facilitating the miniaturization design of the linear motor module 100.

[0063] like Figures 2 to 4 As shown, the slide table 120 is further provided with a second clearance groove 124 that communicates with the first clearance groove 123. The magnetic shaft 171 is slidably disposed in the second clearance groove 124, and a part of the magnetic shaft 171 is located in the second clearance groove 124.

[0064] Understandably, the second clearance slot 124 is designed to accommodate a portion of the magnetic shaft 171, thereby further improving the structural compactness.

[0065] It should be noted that the first clearance groove 123 is formed by deepening the groove wall of the second clearance groove 124, that is, the groove wall of the first clearance groove 123 and the groove wall of the second clearance groove 124 form a stepped structure, which can play a limiting role for the magnetic sleeve 172, thereby restricting the magnetic sleeve 172 from moving axially relative to the slide table 120, so that the magnetic sleeve 172 and the slide table 120 can remain relatively stationary.

[0066] like Figure 2 and Figure 4 As shown, the linear motor module 100 further includes a fixing member 180, which includes an arc-shaped portion 181 and a connecting portion 182 connected to each other. The connecting portion 182 is connected to the slide table 120, and the arc-shaped portion 181 abuts against the outer periphery of the magnetic sleeve 172.

[0067] It is understandable that by abutting the outer periphery of the magnetic sleeve 172 with the arc-shaped part 181, the magnetic sleeve 172 can be stably supported, thereby increasing the stability of the magnetic spring and enabling it to better balance the gravity of the slide table 120 and the load.

[0068] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0069] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A linear motor module, characterized by, include: Module body; A slide table is slidably connected to the module body, and a first mounting groove is provided on the slide table; A linear motor includes a stator and a mover arranged opposite to each other. The stator is disposed on the module body, and the mover is connected to the slide table. The mover is used to move relative to the stator in a preset direction to drive the slide table to slide relative to the module body in the preset direction. The controller is mounted on the slide and located in the first mounting slot, and the controller is electrically connected to the actuator.

2. The linear motor module of claim 1, wherein The linear motor module further includes a first sealant layer, which is connected to the slide to seal the first mounting groove.

3. The linear motor module of claim 1, wherein, The linear motor module also includes a magnetic scale and a magnetic scale reading head arranged opposite to each other. The magnetic scale is disposed on the module body. A second mounting groove is provided on the slide. The magnetic scale reading head is disposed on the slide and located in the second mounting groove. The magnetic scale reading head is electrically connected to the controller.

4. The linear motor module of claim 3, wherein, The linear motor module further includes a second sealant layer, which is connected to the slide to seal the second mounting groove.

5. Linear motor module according to any of claims 1 to 4, characterized in that The preset direction is vertical. The linear motor module also includes an elastic element, which is disposed on the module body and connected to the slide. The elastic element is used to apply a force to the slide, and the direction of the force is opposite to the direction of the gravity acting on the slide.

6. The linear motor module of claim 5, wherein, The elastic element is a magnetic spring, which includes a magnetic shaft and a magnetic sleeve. The magnetic shaft is slidably disposed through the magnetic sleeve and connected to the module body. The magnetic sleeve is connected to the slide table.

7. The linear motor module of claim 6, wherein, The module body includes a base, a first end plate, and a second end plate. The slide is slidably connected to the base. The stator is disposed on the base. The first end plate is connected to one end of the base along the preset direction. The second end plate is connected to the other end of the base along the preset direction. The magnetic shaft is connected between the first end plate and the second end plate.

8. The linear motor module of claim 6, wherein, The slide is provided with a first clearance groove, and a portion of the magnetic sleeve is located within the first clearance groove.

9. The linear motor module of claim 8, wherein, The slide is provided with a second clearance groove that communicates with the first clearance groove. The magnetic shaft is slidably disposed in the second clearance groove, and a portion of the magnetic shaft is located within the second clearance groove.

10. The linear motor module of claim 8, wherein, The linear motor module also includes a fixing component, which includes an arc-shaped part and a connecting part connected to each other. The connecting part is connected to the slide table, and the arc-shaped part abuts against the outer periphery of the magnetic sleeve.

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