CN214999192U

CN214999192U - Novel accurate dirt-proof ball screw

Info

Publication number: CN214999192U
Application number: CN202121291047.XU
Authority: CN
Inventors: 黄庄杰
Original assignee: Lishui Yuanzhi Metal Co ltd
Current assignee: Lishui Yuanzhi Metal Co ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2021-12-03
Anticipated expiration: 2031-06-09

Abstract

The utility model discloses a novel accurate dirt-proof ball screw, including nut, lead screw, ball, sealing washer and closing plate, the oil filler point has been seted up at the top of nut one end, and the nut has been close to the bottom of oil filler point one end and has been seted up the dust removal chamber, and backflow channel has been seted up to the inside that nut central point put, and sealing washer and closing plate cover are established at the both ends of lead screw, and the sealing washer is kept away from the outside of backflow channel one end and is installed first sealing lip limit. The utility model discloses, use through the cooperation of sealing washer, first spring and closing plate, can realize that the cavity that forms between nut and the lead screw is sealed, can prevent that granule dust and abrasive material piece from getting into the cavity when preventing lubricating oil leakage in the cavity, use through the cooperation of dust removal chamber, scraper blade, baffle and third spring, can clear away the granule dust in the lead screw surface spiral track, avoided granule dust or abrasive material piece to get into and cause the lead screw friction to be heated between nut and the lead screw, thereby the life of lead screw has been increased.

Description

Novel accurate dirt-proof ball screw

Technical Field

The utility model relates to a ball screw technical field specifically is a novel accurate dirt-proof ball screw.

Background

The ball screw is the most commonly used transmission element in tool machinery and precision machinery, and has the main function of converting rotary motion into linear motion or converting torque into axial repeated acting force, and has the characteristics of high precision, reversibility and high efficiency.

Because the surface of lead screw is offered and is used for the rolling helical track of ball, current ball lead screw causes granule dust or abrasive material piece etc. to get into the helical track easily at the operation in-process, leads to producing the clearance between nut and the lead screw easily, can influence the normal operating of ball, and the wearing and tearing of lead screw and nut increase simultaneously causes the lead screw life-span that generates heat to shorten easily.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel accurate dirt-proof ball screw to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a novel precise dustproof ball screw comprises a nut, a screw, balls, a sealing ring and a sealing plate, wherein an oil filling hole is formed in the top of one end of the nut, a dust removing cavity is formed in the bottom of one end, close to the oil filling hole, of the nut, a backflow channel is formed in the center of the nut, the sealing ring and the sealing plate are sleeved at two ends of the screw, a first sealing lip edge is installed on the outer side of one end, away from the backflow channel, of the sealing ring, a second sealing lip edge is installed on the inner side of one end, close to the first sealing lip edge, of the sealing ring, one side, close to the first sealing lip edge and the second sealing lip edge, of the first sealing lip edge and the second sealing lip edge are connected through a first spring, sliding holes are formed in the top and the bottom of the sealing plate, second springs are installed in sliding holes in the bottom and the top of the sealing plate, a movable plate is installed at one end, away from the screw, of the second springs are installed at one ends, extending to the outside of the sealing plate, are provided with a limiting block, the movable plate extends to the other end outside the sealing plate and is provided with a movable block, the inner surface of the dust removal cavity is close to the top of the lead screw and is provided with a scraper blade, two ends, far away from the lead screw, of the dust removal cavity are hinged with a baffle, and a third spring is arranged at the center of the top of the baffle.

Preferably, the outer surface of the screw rod is provided with a spiral track, the mounting position of the ball is located in a cavity formed between the nut and the spiral track on the screw rod, and the shape of the backflow channel is spiral and is opposite to the rotation direction of the spiral track on the outer surface of the screw rod.

Preferably, the inside of nut one end is seted up with the circular draw-in groove that the corresponding and size looks adaptation of sealing washer, first sealing lip limit and second sealing lip limit position, the circular draw-in groove of first sealing lip limit and nut is laminated mutually, the second sealing lip limit is laminated mutually with the outside of lead screw.

Preferably, a clamping groove which corresponds to the position of the limiting block and is matched with the limiting block in size is formed in one end, far away from the oil injection hole, of the nut.

Preferably, one end of the scraper is attached to a spiral track arranged on the outer surface of the screw rod.

Preferably, one end of the third spring, which is far away from the baffle plate, is connected with the inner wall of the dust removal cavity.

Compared with the prior art, the utility model provides a novel accurate dirt-proof ball screw possesses following beneficial effect: through the sealing washer, the cooperation of first spring and closing plate is used, can realize that the cavity that forms between nut and the lead screw is sealed, can prevent that granule dust and abrasive material piece from getting into the cavity when preventing lubricating oil leakage in the cavity, use through the cooperation of dust removal chamber, the scraper blade, baffle and third spring, can clear away the granule dust in the lead screw surface spiral track, avoided granule dust or abrasive material piece to get into and cause the lead screw friction to be heated between nut and the lead screw, thereby the life of lead screw has been increased.

Drawings

Fig. 1 is a front sectional view of the present invention;

fig. 2 is a front view of the internal structure of the sealing ring of the present invention;

FIG. 3 is an enlarged view of the point A of FIG. 1 according to the present invention;

fig. 4 is an enlarged view of fig. 1 at B.

In the figure: 1. a nut; 2. an oil filler hole; 3. a lead screw; 4. a return channel; 5. a ball bearing; 6. a seal ring; 7. a first spring; 8. a first sealing lip; 9. a second sealing lip; 10. a sealing plate; 11. a second spring; 12. a movable plate; 13. a limiting block; 14. a moving block; 15. a dust removal cavity; 16. a squeegee; 17. a baffle plate; 18. and a third spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment: a novel precise dustproof ball screw comprises a nut 1, a screw 3, a ball 5, a sealing ring 6 and a sealing plate 10, wherein an oil filling hole 2 is formed in the top of one end of the nut 1, a dust removing cavity 15 is formed in the bottom of one end, close to the oil filling hole 2, of the nut 1, a backflow channel 4 is formed in the center of the nut 1, the sealing ring 6 and the sealing plate 10 are sleeved at two ends of the screw 3, a first sealing lip edge 8 is installed on the outer side, far away from the backflow channel 4, of the sealing ring 6, a second sealing lip edge 9 is installed on the inner side, close to one end of the first sealing lip edge 6, of the sealing ring 6, one side, close to the first sealing lip edge 8 and one side, close to the second sealing lip edge 9, of the first spring 7 are connected, slide holes are formed in the top and the bottom of the sealing plate 10, second springs 11 are installed in the slide holes in the bottom and the top of the sealing plate 10, and one end, far away from the screw 3, of the second springs 11, are provided with a movable plate 12, the movable plate 12 extends to one end outside the sealing plate 10 and is provided with a limiting block 13, the movable plate 12 extends to the other end outside the sealing plate 10 and is provided with a movable block 14, a scraping plate 16 is arranged on the inner surface of the dust removing cavity 15 close to the top of the screw rod 3, two ends of the dust removing cavity 15, far away from the screw rod 3, are hinged with a baffle plate 17, and a third spring 18 is arranged at the center of the top of the baffle plate 17.

In this embodiment, a spiral track is opened on the outer surface of the screw shaft 3, the ball 5 is installed in a cavity formed between the nut 1 and the spiral track on the screw shaft 3, the backflow channel 4 is spiral and has a rotation direction opposite to the spiral track on the outer surface of the screw shaft 3, and the ball enters the through hole of the backflow channel 4 with opposite threads from the spiral track and can rotate to the spiral track, so that circulation is formed.

In this implementation, the inside of nut 1 one end is seted up with sealing washer 6, first sealing lip 8 and second sealing lip 9 position corresponding and size looks adaptation's circular draw-in groove, first sealing lip 8 is laminated with the circular draw-in groove of nut 1 mutually, second sealing lip 9 is laminated with the outside of lead screw 3 mutually, the elasticity of first spring 7 makes first sealing lip 8 and second sealing lip 9 expand, first sealing lip 8 pastes the inner wall of tight nut 1 and fixes, second sealing lip 9 pastes the external surface of tight lead screw 3 and fixes.

In this implementation, a clamping groove corresponding to the position of the limiting block 13 and adaptive to the size is formed in one end, away from the oil injection hole 2, of the nut 1, when the nut is used, the moving block 14 is tightly pinched, the moving block 14 drives the moving plate 12 to move, the moving plate 12 drives the limiting block 13 to tighten up, the limiting block 13 enters the clamping groove of the nut 1, the moving block 14 is loosened, the moving plate 12 is driven by the elasticity of the second spring 11 to expand, the moving plate 12 drives the limiting block 13 to expand, the limiting block 13 is clamped into the clamping groove of the nut 1 to be fixed, and therefore the sealing plate 10 is fixed.

In this embodiment, one end of the scraper 16 is attached to the spiral track formed on the outer surface of the screw rod 3, and the scraper 16 is attached to the spiral track of the screw rod 3, so that the granular dust on the spiral track on the outer surface of the screw rod 3 can be blocked.

In this embodiment, one end of the third spring 18 away from the baffle 17 is connected to the inner wall of the dust removing chamber 15, the particle dust leaks out through the gap between the baffles 17, and when the baffles 17 are not blocked, the elasticity of the third spring 18 restores the baffles 17.

The working principle is as follows: when the device is used, a screw rod 3 is placed in an inner cavity of a nut 1, a ball 5 is placed in a cavity formed between a spiral track on the outer surface of the screw rod 3 and the nut 1, a sealing ring 6 and a sealing plate 10 are sleeved at two ends of the screw rod 3, the sealing ring 6 is clamped into a circular clamping groove at one end of the nut 1, the first sealing lip edge 8 and the second sealing lip edge 9 are unfolded by the elasticity of a first spring 7, the first sealing lip edge 8 is fixed by clinging to the inner wall of the nut 1, the second sealing lip edge 9 is fixed by clinging to the outer surface of the screw rod 3, a moving block 14 is pinched, the moving block 14 drives a moving plate 12 to move, the moving plate 12 drives a limiting block 13 to tighten, the limiting block 13 enters the clamping groove of the nut 1, the moving block 14 is loosened at the moment, the moving plate 12 is driven by the elasticity of a second spring 11 to expand, the moving plate 12 drives the limiting block 13 to expand, the limiting block 13 is clamped into the clamping groove of the nut 1 to be fixed, thereby make closing plate 10 fixed, thereby realize that the cavity both ends that form between nut 1 and the lead screw 3 are sealed, inject lubricating oil through oil filler point 2 toward the cavity that forms between nut 1 and the lead screw 3 this moment, lubricating oil can reduce nut 1, the friction between lead screw 3 and the ball 5, the spiral track that the surface was seted up when lead screw 3 rotated probably has granule dust, scraper blade 16 laminates with the spiral track of lead screw 3 mutually this moment, can block the granule dust on the spiral track of lead screw 3 surface, the granule dust of scraping gets into dust removal chamber 15, when collecting up to a certain extent, baffle 17 receives to block the expansion, the granule dust spills through the space between baffle 17, when baffle 17 does not receive to block, the elasticity of third spring 18 makes baffle 17 resume the normal position.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. The utility model provides a novel dustproof ball screw of precision, includes nut (1), lead screw (3), ball (5), sealing washer (6) and closing plate (10), its characterized in that: the oil filler point is characterized in that the top of one end of the nut (1) is provided with an oil filler point (2), the bottom of one end, close to the oil filler point (2), of the nut (1) is provided with a dust removal cavity (15), the inside of the central position of the nut (1) is provided with a backflow channel (4), the two ends of the screw rod (3) are sleeved with a sealing ring (6) and a sealing plate (10), the outer side, far away from one end of the backflow channel (4), of the sealing ring (6) is provided with a first sealing lip edge (8), the inner side, close to one end of the first sealing lip edge (8), of the sealing ring (6) is provided with a second sealing lip edge (9), the mutually close sides of the first sealing lip edge (8) and the second sealing lip edge (9) are connected through a first spring (7), the top and the bottom of the sealing plate (10) are both provided with slide holes, and the bottom and the slide holes at the top of the sealing plate (10) are both provided with second springs (11), the utility model discloses a dust removal device, including lead screw (3), dust removal chamber (15), baffle (17), second spring (11) are kept away from the one end of lead screw (3) and are installed fly leaf (12), stop block (13) are installed to the one end that fly leaf (12) extend to sealing plate (10) outside, fly leaf (12) extend to the other end of sealing plate (10) outside and install movable block (14), scraper blade (16) are installed near the top of lead screw (3) to dust removal chamber (15) internal surface, the inside both ends of keeping away from lead screw (3) of dust removal chamber (15) all articulate there is baffle (17), third spring (18) are installed to the central point at baffle (17) top.

2. The novel precise dustproof ball screw according to claim 1, is characterized in that: the outer surface of the screw rod (3) is provided with a spiral track, the mounting position of the ball (5) is located in a cavity formed between the nut (1) and the spiral track on the screw rod (3), and the shape of the backflow channel (4) is spiral and is opposite to the rotation direction of the spiral track on the outer surface of the screw rod (3).

3. The novel precise dustproof ball screw according to claim 1, is characterized in that: the circular clamping groove corresponding to the positions of the sealing ring (6), the first sealing lip edge (8) and the second sealing lip edge (9) and matched in size is formed in the inner portion of one end of the nut (1), the first sealing lip edge (8) is attached to the circular clamping groove of the nut (1), and the second sealing lip edge (9) is attached to the outer side of the screw rod (3).

4. The novel precise dustproof ball screw according to claim 1, is characterized in that: and a clamping groove which corresponds to the position of the limiting block (13) and is matched with the limiting block in size is formed in one end, far away from the oil injection hole (2), of the nut (1).

5. The novel precise dustproof ball screw according to claim 1, is characterized in that: one end of the scraper (16) is attached to a spiral track arranged on the outer surface of the screw rod (3).

6. The novel precise dustproof ball screw according to claim 1, is characterized in that: one end of the third spring (18) far away from the baffle (17) is connected with the inner wall of the dust removing cavity (15).