Linear motor module

Abstract

The utility model belongs to the technical field of linear transmission, and discloses a linear motor module which comprises a magnet frame, a coil assembly and a monitoring assembly. The magnet frame is provided with a containing cavity penetrating in the first direction, the coil assembly is arranged in the containing cavity in a sliding mode, two sets of magnetic blocks are arranged on the inner wall of the containing cavity at intervals in the second direction, the coil assembly is arranged between the two sets of magnetic blocks, each set of magnetic blocks are provided with a plurality of magnetic blocks at intervals in the first direction, and the second direction is perpendicular to the first direction. The monitoring assembly is connected between the magnet frame and the coil assembly. The monitoring assembly is configured to monitor the relative distance between the coil assembly and the magnet frame in the first direction. No shell design is adopted, the magnet frame can play a role in bearing and packaging, the coil assembly can be driven, the structure is compact, the integration degree is high, the installation size is small, and assembling is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of linear transmission, in particular to a linear motor module. Background Art

[0002] The linear motor module is a transmission platform. It is a new type of motor that can directly convert electrical energy into mechanical energy of linear motion without any conversion device. It has the advantages of simple structure, less wear, low noise, strong applicability and easy maintenance. Therefore, it is used on a large scale.

[0003] The linear motor module in the prior art is mainly composed of three parts: a motor component, a monitoring component and a housing. The motor component and the monitoring component are encapsulated inside the housing, with low integration. There is a large amount of space waste in the housing, which causes problems such as excessive installation size and inconvenient assembly. Utility Model Content

[0004] The utility model aims to provide a linear motor module with high integration, small installation size and convenient assembly.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] Linear motor module, including:

[0007] The magnet frame is provided with a receiving cavity extending through the magnet frame in a first direction;

[0008] A coil assembly is slidably disposed inside the accommodating cavity, an output end of the coil assembly can extend out of the opening of the accommodating cavity, a magnetic block is disposed on the inner wall of the accommodating cavity, two groups of the magnetic blocks are spaced apart along the second direction, each group of the magnetic blocks includes a plurality of magnetic blocks spaced apart along the first direction, the coil assembly is disposed between the two groups of the magnetic blocks, and the second direction is perpendicular to the first direction;

[0009] A monitoring component is connected between the magnet frame and the coil component, and is configured to monitor the relative distance between the coil component and the magnet frame in the first direction.

[0010] Preferably, the magnet frame comprises a guide rail, the guide rail is connected to the inner wall of the accommodating cavity, and the coil assembly abuts against the guide rail.

[0011] Preferably, the coil assembly comprises:

[0012] Coil body;

[0013] The coil shell is sleeved on the outside of the coil shell, and the surface of the coil shell is provided with an insulating coating.

[0014] Preferably, two limiting posts are arranged on the inner wall of the accommodating cavity, and the two limiting posts are arranged at intervals along the first direction. The coil assembly further comprises a limiting member, and the limiting member can be pressed against the limiting posts.

[0015] Preferably, the material of the limiting member and / or the limiting column is elastic.

[0016] Preferably, the coil assembly is provided with avoidance grooves on both sides facing the magnetic block, and the magnetic block can extend into the avoidance grooves.

[0017] Preferably, the monitoring component comprises:

[0018] A reading head is arranged on the magnet frame;

[0019] A grating ruler is connected to the coil assembly, the grating ruler extends along the first direction, and the reading head is configured to monitor the relative distance between itself and the grating ruler in the first direction.

[0020] Preferably, a mounting hole is provided on the magnet frame, the mounting hole is connected to the accommodating cavity, the monitoring component also includes a fixing frame, the fixing frame is connected to the inner wall of the mounting hole, and the reader is connected to the fixing frame.

[0021] Preferably, the fixing frame is provided with two fixing forks at intervals, and two ends of the reading head are fixedly connected to the two fixing forks respectively.

[0022] Preferably, two accommodating chambers are arranged at intervals along the second direction, and each accommodating chamber is configured with one coil assembly and one monitoring assembly.

[0023] Beneficial effects of the utility model:

[0024] The magnet frame is provided with a accommodating cavity, the coil assembly is arranged inside the accommodating cavity, two groups of magnetic blocks are arranged inside the accommodating cavity, the coil assembly is arranged between the two groups of magnetic blocks, and the monitoring assembly is connected between the magnet frame and the coil assembly. It has a shell-free design, and the magnet frame can not only play a bearing and packaging role, but also drive the coil assembly. It has a compact structure, high integration, small installation size, and is easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of one aspect of the linear motor module of the utility model;

[0026] Figure 2 It is a structural schematic diagram of the linear motor module of the utility model with some structures omitted;

[0027] Figure 3It is a structural schematic diagram of another aspect of the linear motor module of the utility model;

[0028] Figure 4 This is the right view of the linear motor module of the utility model. Figure 1 ;

[0029] Figure 5 This is a right view of the linear motor module of the utility model with some structures omitted. Figure 2 ;

[0030] Figure 6 This is a right view of the linear motor module of the utility model with some structures omitted. Figure 3 .

[0031] In the figure:

[0032] 1. Magnet frame; 11. Magnetic block; 12. Guide rail; 13. Limiting column; 14. Tank body; 15. Cover plate;

[0033] 2. Coil assembly; 21. Coil body; 22. Coil housing; 221. Connecting part; 222. Input port; 23. Positioning member;

[0034] 3. Monitoring component; 31. Reading head; 32. Grating scale; 33. Fixing bracket; 331. Fixing fork. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0036] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, it can be a mechanical connection or an electrical connection, it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the description of the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0039] like Figure 1-Figure 5 As shown, the utility model provides a linear motor module for linear drive.

[0040] The linear motor module includes a magnet frame 1, a coil assembly 2 and a monitoring assembly 3. The magnet frame 1 is provided with a receiving cavity which is through in a first direction; the coil assembly 2 is slidably arranged inside the receiving cavity, and the output end of the coil assembly 2 can extend out of the opening of the receiving cavity; a magnetic block 11 is arranged on the inner wall of the receiving cavity, and two groups of magnetic blocks 11 are arranged at intervals along the second direction, and each group of magnetic blocks 11 includes a plurality of magnetic blocks arranged at intervals along the first direction, and the coil assembly 2 is arranged between the two groups of magnetic blocks 11, and the second direction is perpendicular to the first direction; the monitoring assembly 3 is connected between the magnet frame 1 and the coil assembly 2, and the monitoring assembly 3 is configured to monitor the relative distance between the coil assembly 2 and the magnet frame 1 in the first direction.

[0041] The magnet frame 1 is provided with a accommodating cavity, the coil assembly 2 is arranged inside the accommodating cavity, two groups of magnetic blocks 11 are arranged inside the accommodating cavity, the coil assembly 2 is arranged between the two groups of magnetic blocks 11, and the monitoring assembly 3 is connected between the magnet frame 1 and the coil assembly 2. There is no shell design. The magnet frame 1 can not only play a bearing and packaging role, but also drive the coil assembly 2. It has a compact structure, high integration, small installation size, and is easy to assemble.

[0042] Specifically, the magnet frame 1 includes a guide rail 12, which is connected to the inner wall of the accommodating cavity, and the coil assembly 2 abuts against the guide rail 12. The arrangement of the guide rail 12 makes the coil assembly 2 slide more smoothly in the accommodating cavity.

[0043] In this embodiment, two guide rails 12 are arranged at intervals along the vertical direction, which are limited to stainless steel, have stronger corrosion resistance and high flatness, and the vertical direction is perpendicular to the first direction and the second direction.

[0044] Specifically, the magnet frame 1 includes a slot body 14 and a cover plate 15, the cover plate 15 is detachably connected to the slot body 14, and the slot body 14 and the cover plate 15 are arranged to form a receiving cavity. The above arrangement facilitates the installation and removal of the coil assembly 2.

[0045] Specifically, refer to Figure 6 The coil assembly 2 includes a coil body 21 and a coil housing 22. The coil housing 22 is sleeved outside the coil body 21, and an insulating coating is provided on the surface of the coil housing 22. The above arrangement can prevent the coil assembly 2 from leaking electricity and improve the safety of the device.

[0046] In this embodiment, the material of the coil housing 22 is aluminum. In other embodiments, the coil housing 22 may also be made of other materials, which are not limited here.

[0047] Specifically, the coil housing 22 is provided with a connecting portion 221, which can extend out of the accommodating cavity and has a plurality of connecting holes. The arrangement of the connecting portion 221 enables other devices driven by the linear motor module to be more conveniently connected to the output end of the coil assembly 2.

[0048] In this embodiment, an input port 222 is provided at one end of the coil housing 22 facing away from the output end, and an external power supply cable can pass through the input port 222 to connect with the coil body 21 to realize the power supply of the linear motor module. In other embodiments, the input port 222 can also be provided at other positions of the coil housing 22, which is not limited here.

[0049] Specifically, two limiting posts 13 are arranged on the inner wall of the accommodating cavity, and the two limiting posts 13 are arranged at intervals along the first direction. The coil assembly 2 also includes a limiting member 23, and the limiting member 23 can be pressed against the limiting posts 13. The above arrangement can limit the movement range of the coil assembly 2 in the accommodating cavity and improve the stability of the linear motor module in the working state.

[0050] More specifically, the material of the stopper 23 and / or the stopper column 13 is elastic. The above arrangement reduces the vibration of the linear motor module in the working state due to the interaction between the stopper 23 and the stopper column 13. In this embodiment, the stopper 23 is a high-strength rubber.

[0051] Specifically, the coil assembly 2 is provided with avoidance grooves on both sides facing the magnetic block 11, and the magnetic block 11 can extend into the avoidance grooves. The setting of the avoidance grooves makes the internal space utilization of the accommodating cavity higher, improves the integration, and is conducive to reducing the volume of the linear motor module.

[0052] Specifically, the monitoring component 3 includes a reader 31 and a grating ruler 32. The reader 31 is arranged on the magnet frame 1; the grating ruler 32 is connected to the coil component 2, and the grating ruler 32 extends along the first direction. The reader 31 is configured to monitor the relative distance between itself and the grating ruler 32 in the first direction. The above arrangement can realize the monitoring of the displacement of the coil component 2 in the first direction by monitoring the relative distance between itself and the grating ruler 32 in the first direction by the reader 31, thereby improving the working accuracy of the linear motor module.

[0053] More specifically, a mounting hole is provided on the magnet frame 1, the mounting hole is connected to the accommodating cavity, the monitoring assembly 3 further includes a fixing frame 33, the fixing frame 33 is connected to the inner wall of the mounting hole, and the reader 31 is connected to the fixing frame 33. In the above arrangement, the reader 31 is arranged in the mounting hole through the fixing frame 33, which ensures the connection strength between the reader 31 and the inner wall of the mounting hole, while improving the integration of the linear motor module.

[0054] In this embodiment, the mounting hole is opened on the cover plate 15, and the reading head 31 is flush with the surface of the cover plate 15, which is convenient for disassembly and makes the linear motor module as a whole present a rectangular parallelepiped shape, which is easy to assemble.

[0055] More specifically, the fixing frame 33 is provided with two fixing forks 331 at intervals, and the two ends of the reading head 31 are respectively fixedly connected to the two fixing forks 331. The arrangement of the fixing forks 331 makes the force on the reading head 31 more uniform, and further improves the stability of the reading head 31.

[0056] Specifically, two accommodating cavities are arranged at intervals along the second direction, and each accommodating cavity is provided with a coil assembly 2 and a monitoring assembly 3. With the above arrangement, the double coil assembly 2 can improve the practicality of the linear motor module and realize multiple uses of one machine. In other embodiments, the number of accommodating cavities, coil assemblies 2 and monitoring assemblies 3 can also be changed according to actual needs, which is not limited here.

[0057] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. 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 claims of the present invention.

Claims

1. A linear motor module, characterized in that: include: The magnet frame (1) is provided with a receiving cavity extending through the magnet frame along a first direction; A coil assembly (2) is slidably arranged inside the accommodating cavity, an output end of the coil assembly (2) can extend out of the opening of the accommodating cavity, a magnetic block (11) is arranged on the inner wall of the accommodating cavity, two groups of the magnetic blocks (11) are arranged at intervals along the second direction, each group of the magnetic blocks (11) includes a plurality of magnetic blocks arranged at intervals along the first direction, the coil assembly (2) is arranged between the two groups of the magnetic blocks (11), and the second direction is perpendicular to the first direction; A monitoring component (3) is connected between the magnet frame (1) and the coil component (2), and the monitoring component (3) is configured to monitor the relative distance between the coil component (2) and the magnet frame (1) in the first direction.

2. The linear motor module according to claim 1, characterized in that: The magnet frame (1) comprises a guide rail (12), the guide rail (12) is connected to the inner wall of the accommodating cavity, and the coil assembly (2) abuts against the guide rail (12).

3. The linear motor module according to claim 1, characterized in that: The coil assembly (2) comprises: Coil body (21); The coil housing (22) is sleeved on the outside of the coil housing (22), and the surface of the coil housing (22) is provided with an insulating coating.

4. The linear motor module according to claim 1, characterized in that: Two limiting columns (13) are arranged on the inner wall of the accommodating cavity, and the two limiting columns (13) are arranged at intervals along the first direction. The coil assembly (2) also includes a limiting member (23), and the limiting member (23) can be pressed against the limiting columns (13).

5. The linear motor module according to claim 4, characterized in that: The material of the limiting member (23) and / or the limiting column (13) is elastic.

6. The linear motor module according to claim 1, characterized in that: The coil assembly (2) is provided with avoidance grooves on both sides facing the magnetic block (11), and the magnetic block (11) can extend into the avoidance grooves.

7. The linear motor module according to claim 1, characterized in that: The monitoring component (3) comprises: A reading head (31) is arranged on the magnet frame (1); A grating ruler (32) is connected to the coil assembly (2), the grating ruler (32) extends along the first direction, and the reading head (31) is configured to monitor the relative distance between itself and the grating ruler (32) in the first direction.

8. The linear motor module according to claim 7, characterized in that: The magnet frame (1) is provided with a mounting hole, the mounting hole being connected to the accommodating cavity, the monitoring component (3) further comprising a fixing frame (33), the fixing frame (33) being connected to the inner wall of the mounting hole, and the reader (31) being connected to the fixing frame (33).

9. The linear motor module according to claim 8, characterized in that: The fixing frame (33) is provided with two fixing forks (331) at intervals, and two ends of the reading head (31) are respectively fixedly connected to the two fixing forks (331).

10. The linear motor module according to any one of claims 1 to 9, characterized in that: Two accommodating chambers are arranged at intervals along the second direction, and each accommodating chamber is provided with a coil component (2) and a monitoring component (3).

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