CN110768504A

CN110768504A - Linear motor

Info

Publication number: CN110768504A
Application number: CN201910948720.3A
Authority: CN
Inventors: 聂新贤; 蒋国雄
Original assignee: Guangdong Tiangong Automation Technology Co Ltd
Current assignee: Guangdong Tiangong Automation Technology Co Ltd
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-02-07

Abstract

The invention discloses a linear motor, which comprises a guide rail and a movable seat, wherein both sides of the guide rail are provided with magnetic stators; the moving seat is connected with the guide rail in a sliding mode, coils are arranged inside the moving seat and are respectively installed on two sides of the moving seat, and a supporting seat is installed on the upper portion of the moving seat; the stator corresponds to the position of the coil. The stator is installed respectively in the both sides of guide rail, and the coil separates both sides and installs the both sides at the removal seat, and the attraction of in-process stator to the coil at the removal offsets each other because bilateral symmetry, has removed simultaneously and has come from the pulling force of below, can effectively improve the load capacity of module.

Description

Linear motor

Technical Field

The invention relates to the field of linear modules, in particular to a linear motor.

Background

The general linear motor structure is that the stator is installed on the module base, and the rotor is installed on the movable base to form an up-and-down structure, because the stator and the rotor will attract each other, a downward pulling force will be generated, so that the movable base will bear the external load and the attraction force of the stator and the rotor, resulting in the load that the module can bear being reduced.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a linear motor which can improve the bearing capacity.

A linear motor according to an embodiment of a first aspect of the present invention includes:

the guide rail is provided with magnetic stators on two sides;

the moving seat is connected with the guide rail in a sliding mode, coils are arranged inside the moving seat and are respectively installed on two sides of the moving seat, and a supporting seat is installed on the upper portion of the moving seat;

the stator corresponds to the position of the coil.

The linear motor provided by the embodiment of the invention at least has the following beneficial effects: the stator is installed respectively in the both sides of guide rail, and the coil separates both sides and installs the both sides at the removal seat, and the attraction of in-process stator to the coil at the removal offsets each other because bilateral symmetry, has removed simultaneously and has come from the pulling force of below, can effectively improve the load capacity of module.

According to some embodiments of the invention, the guide rail is provided with sliding rails on both sides thereof, and the movable base is provided with protrusions embedded in the sliding rails on both sides thereof. The slide rail cooperates protruding moving direction to moving the seat to retrain, provides the support to moving the seat simultaneously.

According to some embodiments of the present invention, there are several stators on the same side, and the stators on the same side are arranged and distributed along the moving direction of the moving seat.

According to some embodiments of the invention, the protrusion is embedded into one side of the sliding rail in an arc shape, and the shape of the sliding rail is matched with the protrusion. The load applied to the protrusions is averaged out.

According to some embodiments of the invention, the mobile seat is against or isolated from a bottom surface of the guide rail. When moving the seat and offseting with the guide rail, can reduce the bellied load in both sides, improve the life-span, when moving seat and guide rail isolation, can reduce frictional force, make the operation more smooth.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a linear motor according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a guide rail in a linear motor according to an embodiment of the present invention;

fig. 3 is an enlarged view of a portion a in fig. 1.

Reference numerals: a guide rail-10; a movable seat-20; a stator-11; a coil-21; a support base-22; a slide rail-12; a projection-23.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1, a linear motor includes a guide rail 10 and a movable base 20, wherein both sides of the guide rail 10 are provided with magnetic stators 11; the moving seat 20 is slidably connected with the guide rail 10, a coil 21 is arranged inside the moving seat 20, the coils 21 are respectively installed on two sides of the moving seat 20, and a supporting seat 22 is installed on the upper portion of the moving seat 20; the stator 11 corresponds to the position of the coil 21.

The stators 11 are respectively arranged at two sides of the guide rail 10, the coils 21 are respectively arranged at two sides of the movable seat 20, the magnetic field in the coils 21 is constantly changed, the magnetic force generated by the stators 11 to the coils 21 drives the movable seat 20, the attraction of the stators 11 to the coils 21 in the moving process is mutually offset due to bilateral symmetry, meanwhile, the pulling force from the lower part is removed, and the load capacity of the module can be effectively improved.

It should be noted that, the positions of the stator 11 and the coil 21 correspond to each other, and in this embodiment, the center of the stator 11 and the center of the coil 21 are on the same horizontal line, so as to ensure uniform stress.

In some of the embodiments, the guide rail 10 is provided with sliding rails 12 at both sides, and the movable base 20 is provided with protrusions 23 embedded in the sliding rails 12 at both sides. Referring to fig. 3, the guide rail 10 is recessed and inserted into the movable base 20, wherein the guide rail 10 is provided with slide rails 12 on both sides of the inside thereof, and the protrusion 23 of the movable base 20 is inserted into the slide rails 12, so as to restrain the moving direction of the movable base 20 and provide support for the movable base 20.

In some embodiments, referring to fig. 2, a plurality of stators 11 on the same side are provided, and the stators 11 on the same side are arranged and distributed along the moving direction of the moving seat 20. It is emphasized that, in order to allow the mobile seat 20 to move, the polarities of two adjacent stators 11, which are both directed toward the mobile seat 20, are opposite. Thereby allowing the movable base 20 to be continuously moved.

In some embodiments, the protrusion 23 is embedded in the slide rail 12, and the slide rail 12 is curved, and the shape of the protrusion 23 matches with the shape of the slide rail 12. The load applied to the projections 23 tends to be averaged out.

In some of these embodiments, the movable base 20 is abutted against or isolated from the bottom surface of the guide rail 10. When the movable seat 20 is abutted against the guide rail 10, the load of the protrusions 23 at both sides can be reduced, the service life can be prolonged, and when the movable seat 20 is isolated from the guide rail 10, the friction force can be reduced, so that the operation is smoother.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. A linear motor, comprising:

the guide rail is provided with magnetic stators on two sides;

the stator corresponds to the position of the coil.

2. A linear motor according to claim 1, wherein the guide rail is provided with slide rails on both sides thereof, and the movable base is provided with protrusions embedded in the slide rails on both sides thereof.

3. A linear motor according to claim 1 or 2, wherein a plurality of stators are provided on the same side, and the stators on the same side are arranged and distributed along the moving direction of the moving base.

4. The linear motor of claim 2, wherein the protrusion is embedded in the slide rail and has an arc shape, and the slide rail is matched with the protrusion in shape.

5. A linear motor according to claim 1, 2 or 4, wherein the moving body is located against or spaced from the underside of the guide rail.