CN214480219U

CN214480219U - Closed linear motor module with simple structure

Info

Publication number: CN214480219U
Application number: CN202120478408.5U
Authority: CN
Inventors: 戴健飞; 柯玉理; 李庆光; 戴帝水; 王健; 彭渝峰
Original assignee: Shenzhen Dynamikwell Technology Co ltd
Current assignee: Shenzhen Dynamikwell Technology Co ltd
Priority date: 2021-03-05
Filing date: 2021-03-05
Publication date: 2021-10-22
Anticipated expiration: 2031-03-05

Abstract

The utility model discloses a simple structure's closed linear electric motor module relates to linear electric motor module field, including the linear electric motor main part, sliding structure, a pedestal, the linear electric motor main part includes the slider, the base includes the bottom plate, the slider includes slip platen and sliding shoe, slip platen and sliding shoe fixed connection, the sliding shoe passes through sliding structure and base sliding connection, still include the end plate, dustproof curb plate, the steel band, dustproof curb plate and bottom plate left and right sides fixed connection, end plate and bottom plate, both ends fixed connection around the dustproof curb plate, both ends and end plate fixed connection around the steel band, dustproof curb plate, the bottom plate, the end plate, the steel band encloses to close and forms dustproof cavity, the sliding shoe, sliding structure is located inside dustproof cavity. The dustproof cavity plays the guard action to the junction of sliding structure, smooth foot and base, can prevent debris such as external dust from getting into the inside linear electric motor module operation that influences of linear electric motor module, can prevent again that the greasy dirt of linear electric motor module from splashing and polluting the external environment.

Description

Closed linear motor module with simple structure

Technical Field

The utility model belongs to linear electric motor module structure field, in particular to simple structure's closed linear electric motor module.

Background

The linear motor module is a transmission device which directly converts electric energy into linear motion mechanical energy without any intermediate conversion mechanism, and is a supporting and guiding mechanism for supporting and guiding a component in a sliding direction to reciprocate in a given direction. The action principle of the linear guide can be understood as a rolling guide, and the rolling body is infinitely rolled and circulated between the sliding block and the guide rail, so that the load platform linearly moves along the guide rail, the friction coefficient is reduced to 2% of that of the traditional sliding guide, and high mechanical precision can be easily achieved. In the field of linear motor module platforms, a linear motor is mainly used for carrying closed-loop gratings to realize position feedback and is applied to a linear motion system with high precision, high acceleration and high rigidity. The traditional rolling linear guide rail is widely applied to motion systems of various types of equipment at present, the internal structures of linear motors of various brands are different, and the installation size is standardized. However, with the continuous updating of the equipment, the time benefit, the space benefit and the product precision are more and more emphasized.

The existing linear motor module generally has no good dustproof structure, the sealing performance is not good, and more dust can be accumulated in a cavity of the linear motor module after the linear motor module is used for a period of time. And too much dust can affect the working precision and the working efficiency of the linear motor module. If the linear motor module is applied to a clean room environment, when the linear motor module with poor sealing performance is in operation, oil stains inside the module may be splashed out to affect the clean environment, so that the general linear motor module is not suitable for occasions with high requirements on dust-free degree.

The prior patent 'a full-sealed linear motor module' discloses a full-sealed linear motor module, which separates a motor module from an external space by forming a sealed space through matching an end plate, a side cover plate and a flexible steel belt, and comprehensively and effectively prevents air dust from falling; the flexible steel belt is matched with the magnetic pastes of the side cover plates, the dynamic motion state of the material carrying platform is adapted, the flexible steel belt and the side cover plates can be easily separated under the action of external force without interfering the motion of the material carrying platform, and meanwhile, the flexible steel belt is attached to the side cover plates again at the moment when the external force disappears under the action of the magnetic force, so that the area and the existence time of gaps are reduced; the dust cover that the cooperation was carried material platform top to set up realizes totally enclosed, and sealed dustproof effect is better. However, the fully-sealed linear motor module with a good sealing and dustproof effect in the patent has more structural parts, so that the production steps are more, the assembly structure is complex, and the production cost is high.

Disclosure of Invention

In order to solve the problems, an object of the utility model is to provide a simple structure's closed linear electric motor module, dustproof effectual and spare part is few, and the generation step is few, low in production cost.

Another object of the utility model is to provide a simple structure's closed linear electric motor module, not only simple structure, dustproof effectual, and break down easily to maintain, can prevent that the spare part among the sliding construction from falling into the inside inconvenience that causes of base recess.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the utility model provides a closed linear motor module with simple structure, which comprises a linear motor main body, a sliding structure and a base, wherein the linear motor main body comprises a slide block, the base comprises a bottom plate, the slide block comprises a slide bedplate and slide feet, the slide bedplate is fixedly connected with the slide feet, and the slide feet are connected with the base in a sliding way through the sliding structure; the dustproof side plate is fixedly connected with the left side and the right side of the bottom plate, the front end and the rear end of the end plate are fixedly connected with the bottom plate and the dustproof side plate, the front end and the rear end of the steel belt are fixedly connected with the end plate, the dustproof side plate, the bottom plate, the end plate and the steel belt are enclosed to form a dustproof cavity, and the sliding foot and the sliding structure are located inside the dustproof cavity. The dustproof cavity plays the guard action to the junction of sliding structure, smooth foot and base, can prevent debris such as external dust from getting into the inside linear electric motor module operation that influences of linear electric motor module, can prevent again that the greasy dirt of linear electric motor module from splashing and polluting the external environment. The dust-proof effect is good, the number of parts is small, the number of generation steps is small, and the production cost is low.

Further, this linear electric motor module still includes the rubber magnetic stripe, rubber magnetic stripe fixed connection is on the dustproof curb plate top side, the steel band left and right sides is inhaled with the rubber magnetic stripe magnetism and is connected, the dustproof cavity of transversely stretching out between steel band and the rubber magnetic stripe is followed to the slip platen, the position fixedly connected with slip shell that the dustproof cavity was stretched out to the slip platen, the slip shell, the steel band, the setting is stacked gradually to the slip platen, the top surface that the slip platen is located steel band below position is arcuation crooked on vertical, the bottom surface at both ends is parallel with the rubber magnetic stripe around the slip shell. The curved shape in the longitudinal direction means curved shape in the sliding direction of the slide table. The sliding shell is buckled on the sliding bedplate from the upper part, and the steel belt is clamped between the sliding shell and the sliding bedplate, so that the steel belt positioned above the sliding bedplate is bent along with the shape of the top surface of the sliding bedplate, the steel belt and the rubber magnetic strip at the front end of the sliding bedplate are easily opened when the sliding bedplate slides, and the steel belt and the rubber magnetic strip at the rear end of the sliding bedplate are quickly folded. The bottom surface at both ends is parallel with the rubber magnetic stripe around the slip shell, can be nearer with the bottom surface setting at both ends around the slip shell with the rubber magnetic stripe distance, and the steel band that lies in slip shell below is pushed down respectively to the front end of slip shell, the rear end of slip shell makes the steel band be close to the rubber magnetic stripe, and the steel band that lies in slip shell the place ahead, rear adsorbs together with the rubber magnetic stripe rapidly, forms comparatively sealed dustproof cavity.

Furthermore, the top surface of the sliding bedplate, which is positioned below the steel belt, is connected with a smooth friction plate, the smooth friction plate is arranged between the sliding bedplate and the steel belt, and the smooth friction plate is tightly attached to the sliding bedplate. The smooth friction plate is made of smooth and wear-resistant materials, and when the sliding bedplate slides, the steel belt rubs against the smooth friction plate.

Furthermore, a convex column is fixedly connected to the part of the sliding bedplate extending out of the dustproof cavity, a clamping hole is formed in the sliding shell corresponding to the convex column, and the convex column is clamped into the clamping hole. The fixed connection between the sliding shell and the sliding bedplate is realized by adopting a simple structure, the cost is low, the realization is easy, and the sliding shell and the sliding bedplate can be detached, so that the maintenance is convenient.

Furthermore, the base also comprises two base side plates, the base side plates are arranged in the dustproof cavity, and the two base side plates are fixedly connected with the bottom plate to form a base groove; the slider includes two smooth feet, and two smooth feet symmetry respectively set up between the base curb plate of homonymy and dustproof curb plate, and every smooth foot all passes through sliding structure and the lateral wall sliding connection of base curb plate. The sliding foot and the sliding structure are positioned outside the base groove, the inner space of the base groove is not occupied, the sliding block can be designed to be long according to the power structure in the linear motor main body, and the linear motor module is compact in structure and has high bearing capacity and high stability; the maintenance is easily taken place to the trouble, can prevent that the spare part among the sliding construction from falling into the inside inconvenience that causes of base recess, improves the stability of linear electric motor module operation.

Further, the linear motor main body further comprises a magnetic rail and a linear motor rotor, the magnetic rail and the linear motor rotor are arranged in the groove of the base, the linear motor rotor is fixedly connected with the sliding bedplate in the dustproof cavity, and the magnetic rail is installed on the bottom plate and corresponds to the linear motor rotor in position. The linear motor rotor and the magnetic track are always kept with a certain air gap without contact, so that the contact friction resistance between the linear motor rotor and the magnetic track is eliminated, the sensitivity and the follow-up property of the linear motor module are improved, the non-contact transmission force is realized, the mechanical friction loss is almost zero, the faults are few, and the reliability of the linear motor module is improved.

Further, each sliding structure comprises a rolling body, a sliding rail and a return device; the outer sides of the two base side plates are respectively provided with groove channels in an inwards recessed mode, each sliding foot is provided with a sliding groove in an inwards recessed mode at the position corresponding to the groove channels, the sliding rails are arranged in the groove channels and the sliding grooves to form rolling body channels, the backflow device is embedded inside the sliding feet, the backflow device and the rolling body channels form a closed loop, and the rolling bodies roll in the closed loop. The groove channel is internally provided with the slide rail, so that the slide rail and the base are integrated together, the linear motor module is compact in structure, the requirements on small size and high precision are met, the material originally used for guaranteeing the linear strength of the slide rail is omitted, and the material cost is saved. The rolling body, the reflux device and the rolling body channel form a guide body, the linear motor module is guided to realize high-precision linear reciprocating motion, and the linear motor module also plays a role in supporting the sliding block and bearing load. The sliding structure is arranged outside the base groove, so that the rolling bodies can be prevented from falling into the base groove or being adsorbed on the magnetic rail to cause inconvenience.

Furthermore, the lower side of the sliding foot is fixedly connected with a position encoder; the lateral wall of the base lateral plate is connected with an oil receiving boss which is arranged below the rolling body channel and above the position encoder. The position encoder provides position feedback for the motion of the linear motor module. The user usually adds grease to the rolling element passages. The oil receiving boss can receive grease seeped from the rolling body channel, and the grease is prevented from continuously flowing downwards to pollute the position encoder.

Furthermore, the end plate is connected with buffer rubber, and the buffer rubber is arranged in the dustproof cavity. The buffer rubber plays a role in buffering and limiting the linear motor main body.

Furthermore, the rolling body comprises a plurality of balls, the balls on the sliding rail are in two-point contact with the sliding rail in the groove channel and the sliding rail in the sliding groove, and an included angle between the stress direction of the contact point and the horizontal direction is 45 degrees. The arrangement improves the bearing capacity, rigidity and stability of the linear motor module in linear motion.

The utility model has the advantages that: compared with the prior art the utility model discloses in the middle of, dustproof cavity plays the guard action, can prevent that debris such as external dust from getting into the inside linear electric motor module that influences of linear electric motor module operation, can prevent again that the greasy dirt of linear electric motor module from splashing out and polluting external environment. The linear motor module is simple in structure, few in parts, few in generation steps and low in production cost.

Drawings

Fig. 1 is an exploded view of the present invention.

Fig. 2 is a first cross-sectional view of the present invention.

Fig. 3 is a second sectional view of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

referring to fig. 1-3, the utility model provides a closed linear electric motor module of simple structure, including linear electric motor main part 1, sliding construction 2, base 3, end plate 4, dustproof curb plate 5, steel band 6, rubber magnetic stripe 7, smooth friction disc 8, position encoder 9. The base 3 comprises a bottom plate 31 and two base side plates 32, wherein the two base side plates 32 are fixedly connected with the bottom plate 31 to form a base groove 35. Dustproof curb plate 5 and bottom plate 31 left and right sides fixed connection, both ends fixed connection around end plate 4 and bottom plate 31, dustproof curb plate 5, 7 fixed connection of rubber magnetic stripe are in dustproof curb plate 5 top sides, both ends and end plate 4 fixed connection around the steel band 6, and the 6 left and right sides of steel band are inhaled with 7 magnetism of rubber magnetic stripe and are connected, and dustproof curb plate 5, bottom plate 31, end plate 4, 6 encloses to close of steel band and form dustproof cavity 10. The base side plate 32 is disposed in the dustproof cavity 10.

The linear motor main body 1 includes a slider 11, a magnetic track 12, a linear motor mover 13, and a slide housing 14. The slide block 11 comprises a slide bedplate 111 and two slide feet 112, and the two slide feet 112 are fixedly connected to the bottom side of the slide bedplate 111 in a bilateral symmetry manner. The sliding foot 112 and the sliding structure 2 are both located in the dustproof cavity 10. Two sliding feet 112 are respectively and symmetrically arranged between the base side plate 32 and the dust-proof side plate 5 on the same side, and each sliding foot 112 is connected with the outer side wall of the base side plate 32 in a sliding manner through a sliding structure 2. The sliding feet 112 and the sliding structure 2 are both positioned outside the base groove 35, so that the inner space of the base groove 35 is not occupied, and the sliding block 11 can be designed to have a length corresponding to the power structure in the linear motor main body 1, so that the linear motor module has a compact structure and also has a large bearing capacity and high stability; the maintenance is easily taken place to the trouble, can avoid the spare part in the sliding construction 2 to fall into the inside inconvenience that causes of base recess 35, improves the stability of linear electric motor module operation.

Magnetic track 12 and linear motor mover 13 are disposed in base groove 35, linear motor mover 13 and sliding platen 111 are fixedly connected in dustproof cavity 10, and magnetic track 12 is mounted on bottom plate 31 and corresponds to linear motor mover 13 in position. The linear motor rotor 13 and the magnetic track 12 always keep a certain air gap without contact, so that the contact friction resistance between the linear motor rotor 13 and the magnetic track 12 is eliminated, the sensitivity and the follow-up property of the linear motor module are improved, the non-contact transmission force is realized, the mechanical friction loss is almost zero, the failure is few, and the reliability of the linear motor module is improved.

The sliding bedplate 111 transversely extends out of the dustproof cavity 10 from the position between the steel strip 6 and the rubber magnetic strip 7, and the part of the sliding bedplate 111 extending out of the dustproof cavity 10 is fixedly connected with the sliding shell 14. The top surface of the sliding bedplate 111 at the lower part of the steel belt 6 is curved in an arc shape in the longitudinal direction, the smooth friction plate 8 is arranged between the sliding bedplate 111 and the steel belt 6, the smooth friction plate 8 is connected with the sliding bedplate 111 and is tightly attached, and the sliding shell 14, the steel belt 6, the smooth friction plate 8 and the sliding bedplate 111 are sequentially stacked. The smooth friction plate 8 is made of a smooth and wear-resistant material, and when the sliding platen 111 slides, the steel belt 6 rubs against the smooth friction plate 8. The arcuate curve in the longitudinal direction means an arcuate curve in the sliding direction of the slide platen 111. The sliding outer shell 14 is buckled on the sliding bedplate 111 from the upper part, the steel belt 6 is clamped between the sliding outer shell 14 and the smooth friction plate 8, so that the steel belt 6 positioned above the sliding bedplate 111 is bent along with the shape of the top surface of the sliding bedplate 111, the steel belt 6 and the rubber magnetic strip 7 at the front end of the sliding bedplate 111 are easily opened when the sliding bedplate 111 slides, and the steel belt 6 and the rubber magnetic strip 7 at the rear end of the sliding bedplate 111 are quickly folded. The bottom surfaces of the front end 142 of the sliding shell 14 and the rear end 143 of the sliding shell 14 are parallel to the rubber magnetic stripe 7 and are closer to the rubber magnetic stripe 7, the front end 142 of the sliding shell 14 and the rear end 143 of the sliding shell 14 respectively press the steel belt 6 positioned below the sliding shell 14 to enable the steel belt 6 to be close to the rubber magnetic stripe 7, and the steel belt 6 positioned in front of and behind the sliding shell 14 and the rubber magnetic stripe 7 are rapidly adsorbed together to form a relatively closed dustproof cavity 10. Dustproof cavity 10 plays the guard action, can prevent that debris such as external dust from getting into the inside linear electric motor module operation that influences of linear electric motor module, can prevent again that the greasy dirt of linear electric motor module from splashing and polluting external environment.

The part of the sliding platen 111 extending out of the dust-proof cavity 10 is fixedly connected with a convex column 113, a clamping hole 141 is formed in the sliding shell 14 corresponding to the convex column 113, and the convex column 113 is clamped in the clamping hole 141. The arrangement realizes the fixed connection of the sliding shell 14 and the sliding bedplate 111 by adopting a simple structure, has low cost and easy realization, and the sliding shell 14 and the sliding bedplate 111 can be detached, thereby facilitating the maintenance.

Each sliding structure 2 comprises a rolling body 21, a sliding rail 22 and a return device 23; the outer sides of the two base side plates 32 are respectively provided with a groove channel 33 in an inward recessed manner, each sliding foot 112 is respectively provided with a sliding groove 114 in an inward recessed manner at a position corresponding to the groove channel 33, the sliding rail 22 is arranged in the groove channel 33 and the sliding groove 114 to form a rolling body channel (not shown), the return device 23 is embedded in the sliding foot 112, the return device 23 and the rolling body channel form a closed loop (not shown), and the rolling body 21 rolls in the closed loop. Set up slide rail 22 in the ditch channel way 33 and make slide rail 22 and base 3 integrate together, ensure that linear electric motor module compact structure satisfies small-size, high accuracy demand, and saves the material that is used for guaranteeing slide rail 22 straight line strength originally, save material cost. The rolling body 21, the return device 23 and the rolling body channel form a guide body, so that the linear motor module is guided to realize high-precision linear reciprocating motion, and the linear motor module also plays a role in supporting the sliding block 11 and bearing load. The sliding structure 2 is disposed outside the seat groove 35 to prevent the rolling elements 21 from falling into the seat groove 35 or being attracted to the magnetic rail 12.

The lower side of the sliding foot 112 is fixedly connected with the position encoder 9, the outer side wall of the base side plate 32 is connected with an oil receiving boss 34, and the oil receiving boss 34 is arranged below the rolling body channel and above the position encoder 9. Position encoder 9 provides position feedback for the linear motor module motion. The user usually adds grease to the rolling element passages. The oil receiving boss 34 can receive grease seeping from the rolling element channel, and the grease is prevented from flowing downwards to pollute the position encoder 9.

The end plate 4 is connected with a buffer rubber 41, and the buffer rubber 41 is arranged in the dustproof cavity 10. The cushion rubber 41 plays a role in buffering and limiting the linear motor body 1.

The rolling body 21 is composed of a plurality of balls, the balls on the slide rail 22 are in two-point contact with the slide rail 22 in the groove channel 33 and the slide rail 22 in the sliding groove 114, and an included angle between the stress direction of the contact point and the horizontal direction is 45 degrees. The arrangement improves the bearing capacity, rigidity and stability of the linear motor module in linear motion.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a simple structure's closed linear electric motor module, includes linear electric motor main part, sliding structure, base, and the linear electric motor main part includes the slider, and the base includes the bottom plate, and the slider includes slip platen and sliding shoe, slip platen and sliding shoe fixed connection, and the sliding shoe passes through sliding structure and base sliding connection, its characterized in that: the dustproof side plate is fixedly connected with the left side and the right side of the bottom plate, the front end and the rear end of the end plate are fixedly connected with the bottom plate and the dustproof side plate, the front end and the rear end of the steel belt are fixedly connected with the end plate, the dustproof side plate, the bottom plate, the end plate and the steel belt are enclosed to form a dustproof cavity, and the sliding foot and the sliding structure are located inside the dustproof cavity.

2. The closed linear motor module of simple structure as set forth in claim 1, wherein: still include the rubber magnetic stripe, rubber magnetic stripe fixed connection is on dustproof curb plate top side, the steel band left and right sides is inhaled with the rubber magnetic stripe magnetism and is connected, the dustproof cavity is transversely stretched out from between steel band and the rubber magnetic stripe to the slip platen, the position fixedly connected with slip shell that the dustproof cavity was stretched out to the slip platen, the slip shell, the steel band, the setting is stacked gradually to the slip platen, the top surface that the slip platen is located steel band below position is arcuation crooked on vertical, the bottom surface at both ends is parallel with the rubber magnetic stripe around the slip shell.

3. The closed linear motor module of simple structure as set forth in claim 2, wherein: the top surface of the sliding bedplate, which is positioned below the steel belt, is connected with a smooth friction plate, the smooth friction plate is arranged between the sliding bedplate and the steel belt, and the smooth friction plate is tightly attached to the sliding bedplate.

4. The closed linear motor module of simple structure as set forth in claim 3, wherein: the part of the sliding bedplate extending out of the dustproof cavity is fixedly connected with a convex column, the sliding shell is provided with a clamping hole corresponding to the convex column, and the convex column is clamped in the clamping hole.

5. The closed linear motor module of simple structure as set forth in claim 1, wherein: the base also comprises two base side plates, the base side plates are arranged in the dustproof cavity, and the two base side plates are fixedly connected with the bottom plate to form a base groove; the slider includes two smooth feet, and two smooth feet symmetry respectively set up between the base curb plate of homonymy and dustproof curb plate, and every smooth foot all passes through sliding structure and the lateral wall sliding connection of base curb plate.

6. The closed linear motor module of simple structure as set forth in claim 5, wherein: the linear motor main part still includes magnetic track, linear motor active cell, and magnetic track, linear motor active cell arrange in the base recess, and linear motor active cell and slip platen are fixed connection in dustproof cavity, and the magnetic track is installed on the bottom plate and is corresponded with linear motor active cell position.

7. The closed linear motor module of simple structure as set forth in claim 6, wherein: each sliding structure comprises a rolling body, a sliding rail and a reflux device; the outer sides of the two base side plates are respectively provided with groove channels in an inwards recessed mode, each sliding foot is provided with a sliding groove in an inwards recessed mode at the position corresponding to the groove channels, the sliding rails are arranged in the groove channels and the sliding grooves to form rolling body channels, the backflow device is embedded inside the sliding feet, the backflow device and the rolling body channels form a closed loop, and the rolling bodies roll in the closed loop.

8. The closed linear motor module of simple structure as set forth in claim 7, wherein: the lower side of the sliding foot is fixedly connected with a position encoder; the lateral wall of the base lateral plate is connected with an oil receiving boss which is arranged below the rolling body channel and above the position encoder.

9. The closed linear motor module of simple structure as set forth in claim 1, wherein: the end plate is connected with a buffer rubber which is arranged in the dustproof cavity.

10. The closed linear motor module of simple structure as set forth in claim 7, wherein: the rolling body comprises a plurality of balls, the balls on the slide rail are in two-point contact with the slide rail in the groove channel and the slide rail in the sliding groove, and the included angle between the stress direction of the contact point and the horizontal direction is 45 degrees.