Roller type linear motor

Abstract

The utility model relates to a roller-type linear motor, and the motor comprises a mover assembly which comprises a pedestal, a coil carrying plate, and a limiting plate. The base comprises a bottom plate and side plates; the stator assembly is in sliding connection with the rotor assembly; the stator assembly comprises a stator, a roller support, a plurality of lower rollers, a plurality of upper rollers and a plurality of side rollers; the stator is located between the two limiting plates. The lower roller is used for abutting against the bottom plate, the upper roller is used for abutting against the limiting plate, the side roller is used for abutting against the side plate of the base, and the stator and the coil carrier plate are in non-contact fit. The roller type linear motor is simple in structure and convenient to use, through the roller design of the lower roller, the upper roller and the side rollers, relative sliding connection between the stator and the base and between the stator and the coil carrier plate is achieved, the contact area is reduced, mechanical friction is greatly reduced, linear motion is more stable and smoother, vibration and noise are effectively reduced, and the service life of the motor is prolonged. The service life is effectively prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to linear motor technical field, in particular to a kind of roller type linear motor. BACKGROUND

[0002] Linear motor is an important branch of motor technology, it can directly convert electrical energy into linear motion mechanical energy, without intermediate transmission mechanism, such as gear, screw rod etc. Linear motor is composed of stator and rotor, stator generates magnetic field, rotor interacts with magnetic field by current, thereby generating linear motion. This direct motion conversion mode not only simplifies mechanical structure, but also improves the efficiency of energy conversion.

[0003] However, linear motor often generates larger noise in working process, and lubrication is not convenient, leading to life reduction, once damaged due to abrasion, disassembly and maintenance are more difficult, increase maintenance cost. UTILITY MODEL CONTENT

[0004] Based on this, the utility model provides a kind of roller type linear motor, simple structure, convenient to use, through the roller design of lower roller, upper roller and side roller, the relative sliding connection between stator and base, coil carrier plate is realized, the contact area is reduced, mechanical friction is greatly reduced, so that linear motion is more stable and smooth, effectively reduce the generation of vibration and noise, effectively prolong service life.

[0005] In order to realize the purpose of the utility model, the utility model adopts the following technical solutions:

[0006] A kind of roller type linear motor, comprising:

[0007] Rotor assembly, including base, coil carrier plate installed in the middle part of base, and limiting plate respectively installed in the top of opposite two sides of base;Base includes bottom plate, and side plate vertically connected to opposite two sides of bottom plate;And

[0008] Stator assembly slidingly connected with rotor assembly;Stator assembly includes stator slidingly connected with base, roller support installed in opposite two sides of stator, multiple lower rollers evenly spaced installed in the bottom of each roller support, multiple upper rollers evenly spaced installed in the top of each roller support, and multiple side rollers respectively installed in the bottom and top of roller support;Stator is located between two limiting plates;Lower roller is used for abutting bottom plate, upper roller is used for abutting limiting plate, side roller is used for abutting the side plate of base, and stator and coil carrier plate are non-contact type cooperation.

[0009] The aforementioned roller-type linear motor has a simple structure and is easy to use. Through the roller design of the lower roller, upper roller, and side roller, a relative sliding connection is achieved between the stator and the base and coil carrier plate, which reduces the contact area, greatly reduces mechanical friction, makes the linear motion more stable and smooth, effectively reduces the generation of vibration and noise, and effectively extends the service life.

[0010] In one embodiment, an air gap is provided at the bottom of the stator along the length of the stator, and the air gap is used to accommodate the coil carrier plate.

[0011] In one embodiment, a plurality of coil windings are evenly spaced inside the coil carrier plate; a plurality of magnets are also evenly spaced on the inner wall of the stator corresponding to each air gap, with the magnets distributed on opposite sides of the coil windings.

[0012] In one embodiment, the lower roller and the upper roller are staggered; the side roller located at the bottom of the roller support is staggered with the lower roller, and the side roller located at the top of the roller support is staggered with the upper roller.

[0013] In one embodiment, the axis of the lower roller is parallel to the axis of the upper roller; the axis of the side roller is perpendicular to the axis of the lower roller.

[0014] In one embodiment, the mover assembly further includes a linear encoder mounted on one side of the coil carrier plate.

[0015] In one embodiment, the length direction of the coil carrier plate is consistent with the length direction of the base. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of a roller linear motor according to one embodiment of the present invention.

[0017] Figure 2 for Figure 1 An exploded view of a roller linear motor is shown.

[0018] Figure 3 for Figure 2 The diagram shows the assembly of the base, coil carrier plate, and linear encoder in the roller linear motor.

[0019] Figure 4 for Figure 2 A three-dimensional schematic diagram of the stator assembly in a roller linear motor is shown.

[0020] Figure 5 for Figure 1 The side view of the roller linear motor shown;

[0021] Figure 6 for Figure 5The enlarged view at the circle A shown.

[0022] BRIEF DESCRIPTION OF DRAWINGS

[0023] 10-mover assembly, 11-base, 111-bottom plate, 112-side plate, 12-coil carrier plate, 13-linear encoder, 14-limiting plate;

[0024] 20-stator assembly, 21-stator, 210-air gap, 22-roller support, 23-lower roller, 24-upper roller, 25-side roller, 26-magnet. DETAILED DESCRIPTION

[0025] For the purpose of facilitating the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application.

[0028] Please refer to Figures 1 to 6 , the mover assembly 10 of an embodiment of the present application, and the stator assembly 20 connected to the mover assembly 10.

[0029] The mover assembly 10 includes a base 11, a coil carrier plate 12 mounted in the middle of the base 11, a linear encoder 13 mounted on one side of the coil carrier plate 12, and limiting plates 14 mounted on the top of the opposite sides of the base 11, respectively; the stator assembly 20 is arranged between the two limiting plates 14.

[0030] In the present embodiment, the base 11 is substantially U-shaped, and includes a bottom plate 111 and side plates 112 connected perpendicularly to the opposite sides of the bottom plate 111; the coil carrier plate 12 is connected to the middle of the bottom plate 111. The length direction of the coil carrier plate 12 is consistent with the length direction of the base 11.

[0031] In the embodiment, the coil carrier plate 12 is internally and uniformly spaced with a plurality of coil windings (not shown).

[0032] The stator assembly 20 comprises a stator 21 slidingly connected to the base 11, roller supports 22 mounted on opposite sides of the stator 21, a plurality of lower rollers 23 uniformly spaced and mounted on the bottom of each roller support 22, a plurality of upper rollers 24 uniformly spaced and mounted on the top of each roller support 22, and a plurality of side rollers 25 respectively mounted on the bottom and top of each roller support 22. The stator 21 is located between the two limiting plates 14, and the bottom of the stator 21 is provided with an air gap 210 along the length direction thereof, which is used to accommodate the coil carrier plate 12.

[0033] As shown in Figure 5 and Figure 6 , the lower rollers 23 are used to abut against the bottom plate 111 of the base 11, the upper rollers 24 are used to abut against the limiting plate 14, and the side rollers 25 are used to abut against the side plate 112 of the base 11, which ensures that the stator 21 and the coil carrier plate 12 are in non-contacting cooperation, and at the same time, the stability of the structure is enhanced through multi-point support, preventing the stator 21 from accidentally separating from the base 11, thereby prolonging the service life. Compared with the traditional slide rail type linear motor, the present application adopts roller design, mainly including the lower rollers 23, the upper rollers 24 and the side rollers 25, realizing the relative sliding connection between the stator 21 and the base 11, and the coil carrier plate 12. Due to the small contact area between each roller and the base 11 and the limiting plate 14, the mechanical friction is greatly reduced, making the linear motion more stable and smooth, effectively reducing the generation of vibration and noise, and effectively prolonging the service life. At the same time, it also helps to reduce energy loss, thereby indirectly improving the energy conversion efficiency.

[0034] Specifically, a plurality of magnets 26 are also uniformly spaced and mounted on the inner wall of the stator 21 corresponding to each air gap 210, and the magnets 26 are correspondingly distributed on opposite sides of the coil windings.

[0035] In the embodiment, the lower rollers 23 and the upper rollers 24 are arranged in a staggered manner; the side rollers 25 located at the bottom of the roller support 22 are arranged in a staggered manner with the lower rollers 23, and the side rollers 25 located at the top of the roller support 22 are arranged in a staggered manner with the upper rollers 24.

[0036] In the embodiment, the axis of the lower roller 23 is parallel to the axis of the upper roller 24; and the axis of the side roller 25 is perpendicular to the axis of the lower roller 23.

[0037] The above-mentioned roller type linear motor has simple structure and is convenient to use, realizes the relative sliding connection between the stator 21 and the base 11 and the coil carrier plate 12 through the roller design of the lower roller 23, the upper roller 24 and the side roller 25, reduces the contact area, greatly reduces the mechanical friction, makes the linear motion more stable and smooth, effectively reduces the generation of vibration and noise, and effectively prolongs the service life.

[0038] The technical features of the above-mentioned embodiments can be combined arbitrarily, and in order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the range disclosed in the specification.

[0039] The above-mentioned embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled in the art, on the premise of not departing from the utility model concept, a number of deformations and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A roller-type linear motor characterized by comprising: The motor assembly comprises a base, a coil carrier plate installed in the middle of the base, and two limit plates installed on the top of the opposite sides of the base; the base comprises a bottom plate and two side plates vertically connected to the opposite sides of the bottom plate; and The stator assembly is slidably connected to the motor assembly; the stator assembly comprises a stator slidably connected to the base, two roller supports installed on the opposite sides of the stator, a plurality of lower rollers evenly spaced and installed on the bottom of each roller support, a plurality of upper rollers evenly spaced and installed on the top of each roller support, and a plurality of side rollers installed on the bottom and top of each roller support, respectively; the stator is located between the two limit plates; the lower rollers are used to abut against the bottom plate, the upper rollers are used to abut against the limit plates, the side rollers are used to abut against the side plates of the base, and the stator and the coil carrier plate are in non-contacting cooperation. The bottom of the stator is provided with an air gap along the length direction of the stator, and the air gap is used to accommodate the coil carrier plate.

2. The roller-type linear motor according to claim 1, characterized by A plurality of coil windings are evenly spaced and installed inside the coil carrier plate; a plurality of magnets are also evenly spaced and installed on the inner wall of the stator corresponding to each air gap, and the magnets are distributed on the opposite sides of the coil windings.

3. The roller-type linear motor according to claim 2, characterized by The lower rollers and the upper rollers are staggered; the side rollers on the bottom of the roller support are staggered with the lower rollers, and the side rollers on the top of the roller support are staggered with the upper rollers.

4. The roller-type linear motor according to claim 1, characterized by The axis of the lower rollers is parallel to the axis of the upper rollers; the axis of the side rollers is perpendicular to the axis of the lower rollers.

5. The roller-type linear motor according to claim 1, characterized by The motor assembly further comprises a linear encoder installed on one side of the coil carrier plate.

6. The roller-type linear motor according to claim 1, characterized by The length direction of the coil carrier plate is consistent with the length direction of the base.

7. The roller-type linear motor according to claim 1, characterized by ​

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