Linear motor with plunger tube

Abstract

The utility model relates to the field of motors, and discloses a linear motor with a plunger tube, which comprises a linear motor protection cover and end protection sleeves fixedly connected with two ends of the linear motor protection cover, a stator is fixedly mounted in the linear motor protection cover, an output shaft extending outwards is rotatably mounted on the inner wall of one group of end protection sleeves, and an output shaft is rotatably mounted on the inner wall of the other group of end protection sleeves. One end protection sleeve is provided with an inlet groove, the other end protection sleeve is provided with an outlet groove, the end, corresponding to the interior of the linear motor protection cover, of the output shaft is fixedly connected with a rotor arranged in the stator, and a magnetic isolation pipe is arranged between the stator and the rotor in the linear motor protection cover. A user can simply, conveniently and quickly disassemble and assemble the plunger tube without complicated tools or steps, so that the working efficiency and the maintenance convenience are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of motors, specifically a linear motor with a magnetic shielding tube. Background Technology

[0002] In the field of motor design and manufacturing, magnetic shielding tubes are a key component, primarily used to separate the rotor and stator of a motor to prevent direct contact and wear, prevent magnetic flux leakage, improve motor efficiency, and reduce power loss. Traditionally, magnetic shielding tubes are typically made of high-strength non-magnetic materials such as stainless steel and fixed in specific locations within the motor to ensure their magnetic shielding effect.

[0003] In the prior art, CN201975975U discloses a linear motor with a magnetic shielding tube. The motor includes a stator, a magnetic shielding tube, a mover, and a mover shaft. The mover is mounted on the mover shaft, the stator is sleeved around the mover, and the magnetic shielding tube is positioned between the stator and the mover. In this invention, the magnetic shielding tube is a thin-walled tube made of high-strength, non-magnetic stainless steel, which reduces the air gap in the motor, thereby decreasing the leakage flux coefficient and allowing for better utilization of the high-grade magnets in the stator. Furthermore, by strictly limiting the inner and outer diameter tolerances of the steel tube, the straightness of the entire motor is ensured. Strict requirements on the elliptic accuracy of the magnetic shielding tube ensure the concentricity of the stator laminations, resulting in more precise control over the outer diameter of the entire motor. Although the above device has many beneficial effects, the magnetic shielding tube may need to be replaced due to wear, aging, or damage during long-term operation. The traditional fixing method is to directly weld or rivet the magnetic shielding tube to the corresponding position on the motor. While this fixing method is secure, it often requires destructive methods such as cutting or hammering when the magnetic shielding tube needs to be disassembled or replaced. This is not only time-consuming and laborious, but may also damage other components of the motor. Therefore, we propose a linear motor with a magnetic shielding tube. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a linear motor with a magnetic shielding tube, which solves the above-mentioned problems.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a linear motor with a magnetic shielding tube, comprising a linear motor protective cover and end protective sleeves fixedly connected to both ends of the linear motor protective cover, a stator fixedly installed inside the linear motor protective cover, an outwardly extending output shaft rotatably mounted on the inner wall of one set of end protective sleeves, an outlet groove opened on the other set of end protective sleeves, a mover disposed inside the stator fixedly connected to the end of the output shaft corresponding to the end inside the linear motor protective cover, a magnetic shielding tube disposed between the stator and the mover inside the linear motor protective cover, and further comprising:

[0006] The quick-release assembly, located inside the magnetic shielding tube, is used for the quick disassembly and installation of the magnetic shielding tube.

[0007] Preferably, the magnetic shielding tube is installed inside the stator and located on the outer wall of the mover, with the outer wall of the magnetic shielding tube completely fitting the inner wall of the outlet groove.

[0008] Preferably, the top inner wall and bottom inner wall of the linear motor protective cover are both fixedly connected to connecting rods, and a ring-shaped sleeve is fixedly connected between the two sets of connecting rods, with the magnetic shielding tube slidably connected to the inner wall of the ring.

[0009] Preferably, the inner walls on both sides of the magnetic shielding tube are provided with horizontal grooves near the end, and sliders are slidably connected in both grooves.

[0010] Preferably, the quick-release assembly includes a connecting rod, a linkage plate, and an extension rod. The two sets of sliders are fixedly connected by a connecting rod, and the outer wall of the connecting rod is rotatably fitted with a linkage plate. An extension rod is fixedly connected to one side of the linkage plate near both ends.

[0011] Preferably, the quick disassembly assembly further includes a convex plate, a pressure plate, and a pull plate. The ends of both sets of extension rods are fitted with convex plates, the top of the convex plates is fixedly connected to a pressure plate, and the outer wall of the extension rod is rotatably sleeved between the linkage plate and the convex plate. The ends of both sets of pull plates extend out of the outlet groove.

[0012] Preferably, both sets of pressure plates are arc-shaped, and the outer arc surface of the two sets of pressure plates is completely in contact with the inner wall of the magnetic tube.

[0013] Compared with the prior art, this utility model provides a linear motor with a magnetic shielding tube, which has the following beneficial effects:

[0014] 1. This linear motor with a magnetic shielding tube allows users to easily and quickly disassemble and install the magnetic shielding tube using a designed quick-disassembly component, without the need for complicated tools or steps, greatly improving work efficiency and ease of maintenance.

[0015] 2. The linear motor with a magnetic shielding tube has the magnetic shielding tube slidably connected to the inner wall of the ring, and its outer wall is completely in contact with the inner wall of the outlet groove. This design ensures the smooth sliding of the magnetic shielding tube during disassembly and installation, and avoids jamming or damage.

[0016] 3. The linear motor with magnetic shielding tube provides additional structural support through the fixed connection of connecting rod and ring sleeve, enhancing its overall strength and durability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the outer surface of the linear motor protective cover of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the linear motor protective cover of this utility model;

[0019] Figure 3 This is a cross-sectional view of the magnetic shielding tube of this utility model;

[0020] Figure 4 This is a schematic diagram of the pressure plate structure of this utility model.

[0021] In the diagram: 1. Linear motor protective cover; 2. End protective sleeve; 3. Stator; 4. Output shaft; 5. Mover; 6. Magnetic shielding tube; 7. Connecting rod; 8. Ring sleeve; 9. Outlet groove; 10. Slide groove; 11. Slider; 12. Connecting rod; 13. Linkage plate; 14. Extension rod; 15. Protruding plate; 16. Pressure plate; 17. Pull plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 A linear motor with a magnetic shielding tube includes a linear motor protective cover 1 and end protective sleeves 2 fixedly connected to both ends of the linear motor protective cover 1. A stator 3 is fixedly installed inside the linear motor protective cover 1. An outwardly extending output shaft 4 is rotatably mounted on the inner wall of one set of end protective sleeves 2, and an outlet groove 9 is opened on the other set of end protective sleeves 2. A mover 5 disposed inside the stator 3 is fixedly connected to the end of the output shaft 4 corresponding to the end inside the linear motor protective cover 1. A magnetic shielding tube 6 is disposed between the stator 3 and the mover 5 inside the linear motor protective cover 1. The motor also includes:

[0024] A quick-release assembly is installed inside the magnetic shielding tube 6 for quick disassembly and installation of the magnetic shielding tube 6.

[0025] The magnetic shielding tube 6 is installed inside the stator 3 and located on the outer wall of the mover 5. The outer wall of the magnetic shielding tube 6 is completely in contact with the inner wall of the outlet groove 9.

[0026] The top and bottom inner walls of the linear motor protective cover 1 are both fixedly connected to connecting rods 7. A ring-shaped sleeve 8 is fixedly connected between the two sets of connecting rods 7. The magnetic shielding tube 6 is slidably connected to the inner wall of the sleeve 8. Due to the tight fit between the pressure plate 16 and the inner wall of the magnetic shielding tube 6, the pulling force of the pull plate 17 will drive the magnetic shielding tube 6 to slide on the inner wall of the sleeve 8. As the magnetic shielding tube 6 gradually slides, its end will gradually detach from the outlet groove 9 and eventually completely detach from the space between the stator 3 and the mover 5, thus completing the disassembly process of the magnetic shielding tube 6. Conversely, when it is necessary to install the magnetic shielding tube 6, simply reverse the above process to stably install the magnetic shielding tube 6 between the stator 3 and the mover 5, and achieve a stable connection through quick disassembly of the components. This design not only simplifies the disassembly and installation process, but also ensures the stability and reliability of the linear motor during operation.

[0027] The inner walls on both sides of the magnetic shielding tube 6 are provided with horizontal grooves 10 near the end. Sliding blocks 11 are slidably connected in both grooves 10. With the design of quick disassembly components, users can easily and quickly disassemble and install the magnetic shielding tube 6 without complicated tools or steps, which greatly improves work efficiency and maintenance convenience.

[0028] The quick-release assembly includes a connecting rod 12, a linkage plate 13, and an extension rod 14. The connecting rod 12 is fixedly connected between the two sets of sliders 11. The linkage plate 13 is rotatably sleeved on the outer wall of the connecting rod 12. The extension rod 14 is fixedly connected to one side of the linkage plate 13 near both ends.

[0029] The quick-release assembly also includes a convex plate 15, a pressure plate 16, and a pull plate 17. The ends of both sets of extension rods 14 are fitted with convex plates 15. The top of the convex plate 15 is fixedly connected to the pressure plate 16. The outer wall of the extension rod 14 is rotatably fitted with a pull plate 17 between the linkage plate 13 and the convex plate 15. The ends of both sets of pull plates 17 extend out of the outlet groove 9. When it is necessary to disassemble the magnetic shielding tube 6, one set of pull plates 17 is pushed first, so that the end of the pull plate 17 rotates on the extension rod 14. This action causes the linkage plate 13 to gradually rotate to a vertical state on the connecting rod 12 as the pull plate 17 is pushed.

[0030] Both sets of pressure plates 16 are arc-shaped, and the outer walls of the arc surfaces of the two sets of pressure plates 16 are completely in contact with the inner wall of the magnetic shielding tube 6. As the linkage plate 13 rotates, the pressure plates 16 on the protruding plate 15 gradually become tightly in contact with the inner wall of the magnetic shielding tube 6. When the outer walls of the two sets of pressure plates 16 are tightly in contact with the inner wall of the magnetic shielding tube 6, the two sets of pull plates 17 are pulled outward.

[0031] Structural Description: 1. Linear Motor Protective Cover 1: Serves as the external protective shell for the entire assembly, ensuring the safety and stability of internal components and providing the necessary support structure;

[0032] End protection sleeve 2: Located at both ends of the linear motor protective cover 1, it protects the ends of the output shaft 4 and the magnetic shielding tube 6 from external damage and provides additional sealing.

[0033] Stator 3: Fixed inside the linear motor protective cover 1, it is an important component of the linear motor and together with the mover 5, it generates electromagnetic force to drive the output shaft 4 to move.

[0034] Output shaft 4: One end is rotatably mounted on the end protective sleeve 2, and the other end is connected to the mover 5. It is the power output part of the linear motor.

[0035] Mover 5: Located inside stator 3, connected to output shaft 4, and interacts with stator 3 through electromagnetic force to achieve linear motion;

[0036] Magnetic shielding tube 6: Installed between stator 3 and mover 5, it serves to isolate the magnetic field and protect the internal components. Its outer wall is completely fitted with the inner wall of the outlet groove 9 to ensure stable installation.

[0037] Connecting rod 7 and ring 8: The connecting rod 7 is fixed to the top and bottom inner walls of the linear motor protective cover 1, and the ring 8 is connected between the two sets of connecting rods 7 to form a circular structure for supporting and sliding the magnetic shielding tube 6.

[0038] Slide 10 and slider 11: Slide 10 is opened on both sides of the inner wall of the magnetic shielding tube 6 near the end position, and slider 11 is slidably connected in slide 10, providing stable support and sliding base for quick disassembly of components;

[0039] Link 12: A link 12 is fixed between the two sets of sliders 11. As the main structural part of the quick-disassembly assembly, it connects and supports other components.

[0040] Linkage plate 13 and extension rod 14: Linkage plate 13 is rotatably sleeved on connecting rod 12, and extension rod 14 is fixedly connected to one side of linkage plate 13 near both ends, used to transmit rotational and tensile forces.

[0041] Convex plate 15 and pressure plate 16: Convex plate 15 is sleeved on the end of extension rod 14, and pressure plate 16 is fixed to the top of convex plate 15, is arc-shaped, and is completely in contact with the inner wall of magnetic shielding tube 6, used to generate tensile force and drive magnetic shielding tube 6 to slide.

[0042] Pull plate 17: Pull plate 17 is rotatably sleeved on the outer wall of extension rod 14, corresponding to the linkage plate 13 and the protrusion plate 15. Its end extends out of the outlet groove 9 for the user to operate to disassemble or install magnetic shielding tube 6.

[0043] Working principle: When the magnetic shielding tube 6 needs to be disassembled, first push one set of pull plates 17, causing the end of the pull plate 17 to rotate on the extension rod 14. This action causes the linkage plate 13 to gradually rotate on the connecting rod 12 to a vertical state as the pull plate 17 is pushed. At the same time, the pressure plate 16 on the protruding plate 15 gradually comes into close contact with the inner wall of the magnetic shielding tube 6 as the linkage plate 13 rotates. When the outer walls of both sets of pressure plates 16 are tightly attached to the inner wall of the magnetic shielding tube 6, pull the two sets of pull plates 17 outward. Due to the tight contact between the pressure plate 16 and the inner wall of the magnetic shielding tube 6, the pull plates... The pulling force of 17 will cause the magnetic shielding tube 6 to slide on the inner wall of the ring 8. As the magnetic shielding tube 6 gradually slides, its end will gradually separate from the outlet groove 9 and eventually completely separate from the space between the stator 3 and the mover 5, thus completing the disassembly process of the magnetic shielding tube 6. Conversely, when it is necessary to install the magnetic shielding tube 6, simply reverse the above process to stably install the magnetic shielding tube 6 between the stator 3 and the mover 5, and achieve a stable connection through quick disassembly of the components. This design not only simplifies the disassembly and installation process, but also ensures the stability and reliability of the linear motor during operation.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A linear motor with a magnetic isolation tube, comprising a linear motor protective cover (1) and an end protective sleeve (2) fixed at both ends of the linear motor protective cover (1), and a stator (3) fixedly installed inside the linear motor protective cover (1), characterized in that: One group of the inner wall of the end protection sleeve (2) is rotatably installed with an outwardly extending output shaft (4), another group of the end protection sleeve (2) is provided with an outlet slot (9), the output shaft (4) is fixedly connected with a mover (5) arranged in the stator (3) corresponding to the linear motor protection cover (1), a magnetic separation tube (6) is arranged in the linear motor protection cover (1) corresponding to the stator (3) and the mover (5), and the linear motor protection cover (1) further comprises: A quick disassembly assembly is arranged in the magnetic separation tube (6) and used for quickly disassembling and assembling the magnetic separation tube (6).

2. A linear motor with a magnetic barrier tube according to claim 1, characterized in that: The magnetic separation tube (6) is arranged in the stator (3) and located on the outer wall of the mover (5), and the outer wall of the magnetic separation tube (6) is completely attached to the inner wall of the outlet slot (9).

3. A linear motor with a magnetic barrier tube according to claim 2, characterized in that: The top inner wall and the bottom inner wall of the linear motor protection cover (1) are fixedly connected with connecting rods (7), the connecting rods (7) are fixedly connected with a ring-shaped ring (8) between the two groups of connecting rods (7), and the magnetic separation tube (6) is slidingly connected to the inner wall of the ring (8).

4. A linear motor with a magnetic barrier tube according to claim 3, characterized in that: The inner walls of the two sides of the magnetic separation tube (6) are provided with horizontal sliding grooves (10) near the end positions, and the sliding grooves (10) are slidingly connected with sliding blocks (11).

5. A linear motor with a magnetic barrier tube according to claim 4, characterized in that: The quick disassembly assembly comprises connecting rods (12), linkage plates (13) and extension rods (14), the connecting rods (12) are fixedly connected between the two groups of sliding blocks (11), the linkage plates (13) are rotatably sleeved on the outer walls of the connecting rods (12), and the extension rods (14) are fixedly connected to the two sides of the linkage plates (13) near the two end positions.

6. A linear motor with a magnetic barrier tube according to claim 5, characterized in that: The quick disassembly assembly further comprises convex plates (15), pressure plates (16) and pull plates (17), the convex plates (15) are sleeved on the ends of the two groups of extension rods (14), the pressure plates (16) are fixedly connected to the top of the convex plates (15), the pull plates (17) are rotatably sleeved between the linkage plates (13) and the convex plates (15) corresponding to the outer walls of the extension rods (14), and the ends of the two groups of pull plates (17) extend out of the outlet slot (9).

7. A linear motor with a magnetic barrier tube according to claim 6, characterized in that: The two groups of pressure plates (16) are arc-shaped, and the arc-shaped outer walls of the two groups of pressure plates (16) are completely attached to the inner walls of the magnetic separation tube (6).

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