CN214707482U

CN214707482U - Linear motor module

Info

Publication number: CN214707482U
Application number: CN202121211809.0U
Authority: CN
Inventors: 茅爱峰; 黄树; 岳军齐
Original assignee: Kunshan No1 Precision Industry Technology Co ltd
Current assignee: Kunshan No1 Precision Industry Technology Co ltd
Priority date: 2021-06-01
Filing date: 2021-06-01
Publication date: 2021-11-12
Anticipated expiration: 2031-06-01

Abstract

The embodiment of the application provides a linear motor module, and belongs to the technical field of linear motor modules. The linear motor module comprises a base, a stator and a rotor, wherein the stator is arranged in the base and is used for forming a magnetic field. The rotor is movably arranged on the base and comprises a coil winding, the coil winding is used for being matched with the stator to generate magnetic field force under the condition that the coil winding is electrified, and the magnetic field force is used for driving the rotor to move on the base along the length direction of the base. The linear motor module with the structure can improve the problem of poor stability.

Description

Linear motor module

Technical Field

The application relates to the technical field of linear motor modules, in particular to a linear motor module.

Background

The linear motor module is a moving unit which can directly perform linear motion without any conversion process, and the fixed unit and the moving unit are precisely matched through steel balls to realize high-speed and high-precision linear motion. The traditional linear motor module usually adopts the matching of a servo motor and a ball screw to realize linear motion, and has the problem of poor stability.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a linear motor module to improve the relatively poor problem of stability.

The embodiment of the application provides a linear motor module, and the linear motor module includes base, stator and active cell, and in the base was located to the stator, the stator was used for forming the magnetic field. The rotor is movably arranged on the base and comprises a coil winding, the coil winding is used for being matched with the stator to generate magnetic field force under the condition that the coil winding is electrified, and the magnetic field force is used for driving the rotor to move on the base along the length direction of the base.

Among the above-mentioned technical scheme, coil winding circular telegram back, because the stator can produce magnetic field, so coil winding after the circular telegram can receive the effect of magnetic field power in the magnetic field that the stator produced, under the effect of magnetic field power, linear motion can be realized to the length direction of base can be followed to the active cell, the active cell moves through the effect of magnetic field power with the stator, compare in traditional ball screw and hold-in range, it need not the switching and can directly be linear motion, still has fastly, the precision is high, the acceleration is big, the advantage that stability is good, and its compact structure, small, and space utilization is high.

In some embodiments, the stator includes a plurality of permanent magnets that are distributed continuously within the base along a length of the base.

In the technical scheme, the stator forms a magnetic field through the permanent magnets, and can be matched with the permanent magnets through the control of the coil winding, so that the rotor is driven to move.

In some embodiments, the mover further includes a slider and a core, the slider being slidably engaged with the base. The iron core is arranged on the sliding block and used for the coil winding to penetrate through and limit the coil winding.

Among the above-mentioned technical scheme, the active cell passes through slider and base realization sliding fit, and coil winding wears to establish on the iron core, and the iron core can play limiting displacement to coil winding, and coil winding's stability is higher like this, and coil winding can not be in the motion process because of inertia dislocation.

In some embodiments, the slider is in sliding engagement with the base via a ball bearing.

Among the above-mentioned technical scheme, realize slider and base slip between them through the rolling mode of ball, the rolling of steel ball can be great reduce the frictional force that removes between slider and the base, and the noise is little, and the energy loss of the motion process of slider is also littleer, has improved transmission efficiency.

In some embodiments, the base is provided with a first guide groove, the slider is provided with a second guide groove, the first guide groove and the second guide groove are both arranged to extend along the length direction of the base, and the first guide groove and the second guide groove jointly define a ball guide groove for rolling balls.

Among the above-mentioned technical scheme, the ball guide slot is formed by base and slider jointly, and ball and slider and base homoenergetic contact like this to make the slip process between slider and ball more smooth and easy, base and slider both carry on spacingly to the ball jointly moreover, and the rolling stability of ball is higher.

In some embodiments, the second guide grooves are formed on both sides of the length direction of the slider.

Among the above-mentioned technical scheme, all be equipped with this second guide slot through the both sides at the slider for through ball sliding fit between the both sides of slider and the lateral wall of base, slider gliding stability on the base is higher like this.

In some embodiments, the linear motor module comprises a positioning assembly, the positioning assembly comprises a magnetic grid ruler and a magnetic grid head, the magnetic grid ruler is arranged on the base, and the magnetic grid ruler extends along the length direction of the base. The magnetic grid head is arranged on the rotor and is used for being matched with the magnetic grid ruler when the rotor moves on the base so as to monitor and position the real-time position of the rotor on the base.

Among the above-mentioned technical scheme, can monitor the location to the position of active cell on the base in real time through setting up locating component, improved the control accuracy to the active cell. Specifically, the magnetic grid ruler extends along the length direction of the base, the magnetic grid head is arranged on the rotor, and the magnetic grid head can be matched with the magnetic grid ruler to monitor the position of the rotor in real time.

In some embodiments, the linear motor module further comprises a limiting assembly, the limiting assembly comprises a mounting bar, a photoelectric switch and a light shielding sheet, and the mounting bar is arranged on the base. The photoelectric switch is arranged on the mounting bar. The shading sheet is arranged on the rotor and used for enabling the coil winding to be powered off when the rotor moves to the position where the shading sheet is overlapped with the photoelectric switch.

Among the above-mentioned technical scheme, can surpass the condition of stroke through spacing subassembly at the active cell, photoelectric switch and anti-dazzling screen cooperation for the coil winding outage, thereby the stroke of restriction active cell.

In some embodiments, the linear motor module further includes an end cover, the end cover is connected to the end portion of the base in the length direction, a buffer pad is further disposed on one side of the end cover, which is close to the base, and the buffer pad is used for supporting the rotor when the rotor moves to the end cover.

Among the above-mentioned technical scheme, the tip through the length direction at the base sets up the end cover, and the end cover can block the both ends of active cell stroke, simultaneously through being close to the blotter that base one side set up at the end cover, can avoid providing cushioning effect to the active cell under the condition after the active cell motion surpasss the stroke, avoids taking place rigid collision between active cell and the end cover.

In some embodiments, the base is provided with a cover plate for covering the upper side of the base.

Among the above-mentioned technical scheme, through being provided with the apron above the base, the apron can carry out the closing cap to active cell and stator on the base, has improved the inside seal performance of base, can also prevent external dust to get into the base simultaneously by a wide margin in, has guaranteed the normal operating of active cell and stator.

Additional features and advantages of the present application will be described in detail in the detailed description which follows.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a linear motor module according to some embodiments of the present disclosure;

fig. 2 is a schematic structural view of another angle of a linear motor module according to some embodiments of the present disclosure;

fig. 3 is an exploded view of a linear motor module according to some embodiments of the present disclosure;

fig. 4 is a schematic structural diagram of a base and a stator of a linear motor module according to some embodiments of the present disclosure;

fig. 5 is a schematic structural diagram of a base and a mover of a linear motor module according to some embodiments of the present disclosure;

fig. 6 is a schematic structural diagram of a mover in a linear motor module according to some embodiments of the present disclosure;

fig. 7 is an exploded view of a mover in a linear motor module according to some embodiments of the present disclosure;

fig. 8 is a schematic structural diagram of a positioning assembly in a linear motor module according to some embodiments of the present disclosure;

fig. 9 is a schematic structural diagram of a limiting assembly in a linear motor module according to some embodiments of the present disclosure.

Icon: 10-a base; 11-a first mounting groove; 12-a first guide groove; 20-end cap; 21-a cushion pad; 30-a cover plate; 40-a stator; 50-a mover; 51-a slider; 510-a second mounting groove; 511-a second guide slot; 512-second circulation vias; 52-iron core; 53-coil winding; 54-epoxy resin glue layer; 55-steel ball circulator; 550-a first circulation via; 56-a ball bearing; 60-an adapter; 70-a positioning assembly; 71-a magnetic grid head; 72-magnetic grid head support; 73-magnetic scale; 80-a spacing assembly; 81-shading sheet; 82-mounting bars; 83-photoelectric switch; 100-linear motor module.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it should be noted that the indication of the orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Examples

An embodiment of the present application provides a linear motor module, please refer to fig. 1 and fig. 2, the linear motor module 100 includes a base 10, a stator 40 and a mover 50, the stator 40 is disposed in the base 10, and the stator 40 is used for forming a magnetic field. The mover 50 is movably provided to the base 10, and the mover 50 includes a coil winding 53 (not shown in fig. 1 and 2), the coil winding 53 being configured to generate a magnetic force in cooperation with the stator 40 when the coil winding 53 is energized, the magnetic force being configured to drive the mover 50 to move on the base 10 along a length direction of the base 10.

Among the above-mentioned technical scheme, coil winding 53 circular telegram back, because stator 40 can produce the magnetic field, so coil winding 53 after circular telegram can receive the effect of magnetic field power in the magnetic field that stator 40 produced, under the effect of magnetic field power, mover 50 can realize linear motion along the length direction of base 10, mover 50 moves through the effect of magnetic field power with stator 40, compare in traditional ball 56 lead screw and hold-in range, it need not the switching and can directly be linear motion, still has fastly, the precision is high, acceleration is big, the good advantage of stability, and its compact structure, small, space utilization is high.

In some embodiments, referring to fig. 3, the linear motor module further includes an end cover 20, the end cover 20 is connected to an end portion of the base 10 in the length direction, a buffer 21 is further disposed on a side of the end cover 20 close to the base 10, and the buffer 21 is used for supporting the mover 50 when the mover 50 moves to the end cover 20.

The end covers 20 are arranged at the end parts of the base 10 in the length direction, the end covers 20 can block the two ends of the stroke of the mover 50, and meanwhile, the buffer cushion 21 arranged on one side, close to the base 10, of the end covers 20 can prevent the mover 50 from being buffered when the mover 50 moves beyond the stroke, and therefore rigid collision between the mover 50 and the end covers 20 is avoided.

The end cap 20 is fixedly connected to the base 10, for example, by screwing, plugging, etc. In this embodiment, the end cap 20 is screwed to the base 10.

In some embodiments, the base 10 is provided with a cover plate 30, and the cover plate 30 is used for covering the upper part of the first installation groove 11 on the base 10.

The cover plate 30 is arranged above the base 10, and the cover plate 30 can cover the rotor 50 and the stator 40 on the base 10, so that the sealing performance inside the base 10 is improved, external dust can be greatly prevented from entering the base 10, and the normal operation of the rotor 50 and the stator 40 is ensured.

In the case where the base 10 has the end caps 20 at both ends thereof, both ends of the cover 30 in the longitudinal direction are fixedly connected to the end caps 20, respectively. The top of the end cap 20 and the cover plate 30 are provided with threaded holes, and the cover plate 30 and the end cap 20 can be fixed by screwing.

In some embodiments, referring to fig. 3, the sliding block 51 further has an adapter 60, and the adapter 60 is used for connecting with an external load.

The connection with an external load can be realized through the adapter 60, and under the condition that the coil winding 53 is electrified, the rotor 50 is driven to move so as to drive the adapter 60 to move, so that the external load driving is realized.

The adapter 60 is fixedly connected with the slider 51, and may be screwed, inserted, or welded, for example.

Adapter 60 is the H type, and adapter 60 includes belly, last flange portion and lower flange portion, and adapter 60 passes through belly and slider 51 fixed connection, goes up the flange portion and lies in the both sides of the width direction of base 10 respectively with lower flange portion to respectively the level stretch out outside base 10, goes up flange portion and lower flange portion and has processed the connecting hole, and adapter 60 is connected with external load through this connecting hole.

Referring to fig. 4, the base 10 is provided with a first mounting groove 11, the first mounting groove 11 extends along the length direction of the base 10, and the stator 40 can be mounted in the first mounting groove 11.

In some embodiments, the stator 40 includes a plurality of permanent magnets that are continuously distributed along the length of the susceptor 10 within the susceptor 10.

The stator 40 forms a magnetic field by a plurality of permanent magnets, and may cooperate with the permanent magnets by controlling the coil winding 53, thereby driving the mover 50 to move.

The plurality of permanent magnets are sequentially arranged in the first mounting groove 11 of the base 10 along the length direction of the first mounting groove 11.

In some embodiments, a plurality of permanent magnets are adhesively secured to the base 10.

Like this, a plurality of permanent magnets are direct to be bonded fixedly with base 10, need not recycle the mounting panel and supply the permanent magnet installation to occupy base 10's installation space, consequently adopt the mode of bonding fixed can reduce the whole height of whole linear electric motor module, and is small, and space utilization is high.

The plurality of permanent magnets are fixedly adhered in the first installation groove 11 of the base 10 in a specific arrangement manner.

The plurality of permanent magnets can be fixed in the first mounting groove 11 in a manner that the magnetic poles of the two adjacent permanent magnets are opposite, and understandably, the opposite magnetic poles mean that the S pole of the left permanent magnet is close to the N pole of the right adjacent permanent magnet, and the N pole of the left permanent magnet is close to the S pole of the right adjacent permanent magnet.

In some embodiments, please refer to fig. 5, 6 and 7, the mover 50 further includes a slider 51 and a core 52, and the slider 51 is slidably engaged with the base 10. The iron core 52 is arranged on the sliding block 51, and the iron core 52 is used for the coil winding 53 to penetrate through and limit the coil winding 53.

The rotor 50 is in sliding fit with the base 10 through the slider 51, the coil winding 53 penetrates through the iron core 52, and the iron core 52 can limit the coil winding 53, so that the stability of the coil winding 53 is higher, and the coil winding 53 cannot be dislocated due to inertia in the movement process.

Optionally, referring to fig. 7, a second mounting groove 510 for mounting the coil assembly is formed on the slider 51, the second mounting groove 510 is disposed along the length direction of the slider 51, and the iron core 52 is mounted in the second mounting groove 510.

The iron core 52 may be formed by laminating silicon steel sheets with a specific shape, the coil winding 53 may be formed by preparing copper wires according to a specific shape, the coil winding 53 is sleeved on the iron core 52, and the iron core 52 and the coil winding 53 in the second mounting groove 510 are sealed by the epoxy resin adhesive layer 54, so that the coil winding 53 is integrated in the slider 51.

In some embodiments, the slider 51 is in sliding engagement with the base 10 via a ball 56.

The sliding of the sliding block 51 and the base 10 is realized through the rolling mode of the balls 56, the rolling of the steel balls can greatly reduce the friction force of the sliding block 51 moving with the base 10, the noise is low, the energy loss of the sliding block 51 in the moving process is also low, and the transmission efficiency is improved.

In some embodiments, the base 10 is provided with a first guide groove 12 (shown in fig. 4), the slider 51 is provided with a second guide groove 511 (shown in fig. 7), the first guide groove 12 and the second guide groove 511 are both provided to extend along the length direction of the base 10, and the first guide groove 12 and the second guide groove 511 together define a ball 56 guide groove for the ball 56 to roll.

The ball 56 guide groove is formed by the base 10 and the sliding block 51 together, so that the ball 56 can be contacted with both the sliding block 51 and the base 10, the sliding process between the sliding block 51 and the ball 56 is smoother, the base 10 and the sliding block 51 limit the ball 56 together, and the rolling stability of the ball 56 is higher.

The first guide groove 12 may be located on a groove sidewall of the first mounting groove 11 in the base 10, or may be located at a groove bottom of the first mounting groove 11 in the base 10.

For example, in the case where the first guide groove 12 is located on the groove side wall of the first mounting groove 11 in the base 10, the second guide groove 511 is located on the outer side wall in the length direction of the slider 51.

In some embodiments, the slider 51 is provided with second guide grooves 511 at both sides in the length direction.

By providing the second guide grooves 511 on both sides of the slider 51, both sides of the slider 51 are slidably engaged with the side walls of the base 10 through the balls 56, so that the slider 51 has higher stability in sliding on the base 10.

The balls 56 may be made of various materials, such as steel balls.

In some embodiments, with reference to fig. 7, the two ends of the sliding block 51 may be provided with a steel ball circulator 55, and the steel ball circulator 55 is fixedly connected to the end of the sliding block 51. The steel ball circulator 55 is provided with a first circulating through hole 550, the slide block 51 is correspondingly provided with a second circulating through hole 512 along the length direction of the slide block 51, the first circulating through hole 550 is communicated with the second circulating through hole 512, and the steel ball guide groove, the first circulating through hole 550 of the steel ball circulator 55 and the second circulating through hole 512 in the slide block 51 are matched to form an oval closed circulating channel for rolling the steel balls, so that the steel balls can circularly roll on the slide block 51.

In some embodiments, referring to fig. 8, the linear motor module 100 further includes a positioning assembly 70, the positioning assembly 70 includes a magnetic scale 73 and a magnetic scale head 71, the magnetic scale 73 is disposed on the base 10, and the magnetic scale 73 extends along a length direction of the base 10. The magnetic grid head 71 is arranged on the mover 50, and the magnetic grid head 71 is used for matching with the magnetic grid ruler 73 when the mover 50 moves on the base 10 so as to monitor and position the real-time position of the mover 50 on the base 10.

The positioning assembly 70 can monitor and position the position of the mover 50 on the base 10 in real time, so that the control precision of the mover 50 is improved. Specifically, the magnetic scale 73 is extended along the length direction of the base 10, and the magnetic head 71 is disposed on the mover 50, and the magnetic head 71 can cooperate with the magnetic scale 73 to monitor the position of the mover 50 in real time.

The magnetic scale 73 is mounted on the base 10, and may be adhered, screwed, and fixed, for example. In addition, the magnetic scale head 71 may be mounted on the adaptor 60 of the mover 50 through the magnetic scale head holder 72.

In some embodiments, referring to fig. 9, the linear motor module 100 further includes a limiting assembly 80, the limiting assembly 80 includes a mounting bar 82, a photoelectric switch 83 and a light shielding sheet 81, and the mounting bar 82 is disposed on the base 10. The photoelectric switch 83 is mounted on the mounting bar 82. The light-shielding sheet 81 is provided on the mover 50, and the light-shielding sheet 81 is used to de-energize the coil winding 53 when the mover 50 moves until the light-shielding sheet 81 overlaps the electro-optical switch 83.

The limit assembly 80 may allow the photoelectric switch 83 to be engaged with the light shielding plate 81 in case the mover 50 exceeds a stroke, so that the coil winding 53 is de-energized, thereby limiting the stroke of the mover 50.

The light shielding sheet 81 may be an iron sheet, a plastic sheet, an aluminum sheet, or the like.

In this embodiment, the light shielding sheet 81 is an aluminum sheet, and the light shielding sheet 81 made of aluminum has a relatively light weight and also has light shielding properties, and can be fitted with the photoelectric switch 83.

It should be noted that the features of the embodiments in the present application may be combined with each other without conflict.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A linear motor module, comprising:

a base;

the stator is arranged in the base and is used for forming a magnetic field;

the rotor is movably arranged on the base and comprises a coil winding, the coil winding is used for being matched with the stator to generate magnetic field force under the condition that the coil winding is electrified, and the magnetic field force is used for driving the rotor to move on the base along the length direction of the base.

2. The linear motor module of claim 1, wherein the stator includes a plurality of permanent magnets that are continuously distributed within the base along the length of the base.

3. The linear motor module of claim 1, wherein the mover further comprises:

the sliding block is in sliding fit with the base;

and the iron core is arranged on the sliding block and used for the coil winding to penetrate and limit.

4. The linear motor module of claim 3, wherein the slide is in sliding engagement with the base via a ball bearing.

5. The linear motor module as claimed in claim 4, wherein the base is provided with a first guide groove, the slider is provided with a second guide groove, the first guide groove and the second guide groove are both extended along a length direction of the base, and the first guide groove and the second guide groove together define a ball guide groove for the balls to roll.

6. The linear motor module according to claim 5, wherein the second guide grooves are formed at both sides of the length direction of the slider.

7. The linear motor module of claim 1, wherein the linear motor module includes a positioning assembly, the positioning assembly comprising:

the magnetic grid ruler is arranged on the base and extends along the length direction of the base;

the magnetic grid head is arranged on the rotor and is used for being matched with the magnetic grid ruler when the rotor moves on the base so as to monitor and position the real-time position of the rotor on the base.

8. The linear motor module of claim 1, further comprising a stop assembly, the stop assembly comprising:

the mounting bar is arranged on the base;

the photoelectric switch is arranged on the mounting bar;

and the shading sheet is arranged on the rotor and used for powering off the coil winding when the rotor moves to the state that the shading sheet is superposed with the photoelectric switch.

9. The linear motor module of claim 1, further comprising:

the end cover is connected with the end part of the base in the length direction, a cushion pad is further arranged on one side, close to the base, of the end cover, and the cushion pad is used for enabling the rotor to abut against when the rotor moves to the end cover.

10. The linear motor module as recited in claim 1, wherein the base is provided with a cover for covering an upper portion of the base.