CN218510106U

CN218510106U - Dustproof screw rod

Info

Publication number: CN218510106U
Application number: CN202222586890.1U
Authority: CN
Inventors: 沈旭辉; 赖书平
Original assignee: Dongguan Zhongmai Machinery Co ltd
Current assignee: Dongguan Zhongmai Machinery Co ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-02-21
Anticipated expiration: 2032-09-28

Abstract

The utility model belongs to the technical field of rotating devices, in particular to a dustproof screw rod, which comprises a screw rod and a nut; the screw comprises a main body, a first connecting part and a second connecting part, wherein the first connecting part and the second connecting part are arranged at two ends of the main body; the outer wall of the main body is provided with an outer spiral groove, an inner cavity is arranged in the nut, an inner spiral groove is arranged in the inner cavity, the nut is nested outside the outer spiral groove, and the inner spiral groove and the outer spiral groove are matched with each other through balls; nut one side is equipped with the dust removal ring, and a plurality of brushes have been laid to the annular on the inner wall of the annular ring of dust removal ring, the brush hair butt external spiral groove of brush, and the outer wall of dust removal ring runs through a plurality of dust absorption holes that are equipped with the intercommunication annular ring. And the dust on the screw rod is removed, so that the friction force between the nut and the screw rod is reduced, the stability of the nut and the screw rod is improved, and the service life is prolonged.

Description

Dustproof screw rod

Technical Field

The utility model belongs to the technical field of rotating device, especially, relate to a dustproof lead screw.

Background

The feed screw nut is an ideal product for converting rotary motion into linear motion or converting linear motion into rotary motion.

The utility model with the application number of CN201220348021.9 discloses a ball screw, which comprises a screw shaft, a screw cap, a reverser and two wipers; a plurality of balls which are arranged in sequence are arranged between the screw cap and the groove arranged on the screw shaft; the two scrapers are made of polyethylene materials and are respectively arranged in the two ports of the screw cap; therefore, the two scrapers are utilized to form the sealing rings between the two ends of the screw cap and the screw shaft, so that oil leakage is effectively prevented, dust and rust are prevented from entering, the stability and the reliability of transmission of the utility model are ensured, the use performance of the product is improved, convenience is brought to the use of a user, meanwhile, the scrapers made of polyethylene materials have the advantages of wear resistance, oil resistance, no deformation and the like, and the service life of the product is prolonged; the utility model is suitable for an in the machine tool machines such as spark machine, pore machine, lathe, milling machine, machining center machinery, carton equipment, general machinery, special machinery, use extensively.

Above-mentioned utility model discloses an in the use of screw-nut, have the dust in the air and fall on the screw rod, when the nut reciprocating motion on the screw rod, dust on the screw rod can get into between nut and the screw rod, leads to the nut to rotate not smooth, influences normal use. Meanwhile, dust can cause slight shaking in use, the stability is poor, and the service life is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a dustproof lead screw aims at solving the technical problem that can not be dirt-proof among the prior art.

In order to achieve the above object, an embodiment of the present invention provides a dustproof screw rod, which includes a screw rod and a nut; the screw comprises a main body, a first connecting part and a second connecting part, wherein the first connecting part and the second connecting part are arranged at two ends of the main body; the outer wall of the main body is provided with an outer spiral groove, an inner cavity is formed in the nut, an inner spiral groove is formed in the inner cavity, the nut is nested outside the outer spiral groove, and the inner spiral groove and the outer spiral groove are matched with each other through balls; the nut one side is equipped with the dust ring, a plurality of brushes have been laid to the annular on the inner wall of the annular ring of dust ring, the brush hair butt of brush outer spiral groove, the outer wall of dust ring runs through and is equipped with the intercommunication a plurality of dust absorption holes of annular hole.

Optionally, two sides of each brush are provided with one dust suction hole.

Optionally, the dust suction holes are uniformly distributed on the dust removal ring, and the dust suction holes are connected with an air pump through an air pipe.

Optionally, one end of the first connecting part, which is far away from the main body, is provided with a groove surrounding the screw rod.

Optionally, the second connecting portion comprises a spiral groove and a connecting rod; one end of the spiral groove is connected with the main body, and the other end of the spiral groove is connected with the connecting rod.

Optionally, the surface of the nut is provided with a first protective layer.

Optionally, the surface of the screw is provided with a second protective layer.

Optionally, the first protective layer and the second protective layer are both made of metal fluorocarbon paint.

Optionally, a backflow channel is arranged at the top of the inner cavity, balls are connected in the backflow channel, and the nut further comprises a through hole which is communicated with the backflow channel. The nut further comprises a through hole, and the through hole is communicated with the backflow channel.

The embodiment of the utility model provides an above-mentioned one or more technical scheme in the dustproof lead screw have one of following technological effect at least: the utility model provides a pair of dustproof lead screw is at work, and the nut is repetitive motion on the screw rod, when the dust scatters the outer spiral inslot of screw rod, is equipped with the dust absorption hole that brush and run through on the inner wall of dust removal ring, and the brush is responsible for sweeping out the dust of outer spiral inslot, through the dust suction that the dust absorption hole will be swept out, reaches the purpose of a dust removal.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural view of a dustproof screw rod provided by an embodiment of the present invention.

Fig. 2 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A in fig. 1.

Fig. 3 is a partial sectional view taken along line B-B in fig. 1.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended to explain the embodiments of the present invention and are not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, it should be understood that, if directional indications, such as the directions or positional relationships indicated by upper, lower, left, right, front, back, inner, outer, etc., are provided in the embodiments of the present invention, the directions or positional relationships indicated by the drawings are only for convenience of description and simplification of the description, and the indication or suggestion that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" should be broadly construed, and for example, the terms may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In an embodiment of the present invention, as shown in fig. 1 to 3, there is provided a dustproof screw rod, comprising a screw 100 and a nut 200; the screw 100 includes a body 110 and a first connection part 120 and a second connection part 130 provided at both ends of the body 110; an outer spiral groove 111 is formed in the outer wall of the main body 110, an inner cavity 210 is formed in the nut 200, an inner spiral groove 220 is formed in the inner cavity 210, a backflow passage 230 is formed in the top of the inner cavity 210, balls 240 are connected to the backflow passage 230 in an inner mode, the nut 200 is nested in the outer spiral groove 111, and the inner spiral groove 220 and the outer spiral groove 111 are matched with each other through the balls 240 to reciprocate on the main body 110; a dust removing ring 300 is arranged on one side of the nut 200, a plurality of brushes 310 are annularly arranged on the inner wall of the annular hole of the dust removing ring 300, the bristles of the brushes 310 are abutted against the outer spiral groove 111, and a plurality of dust collecting holes 320 communicated with the annular hole are arranged on the outer wall of the dust removing ring 300 in a penetrating mode.

Specifically, during the work of the dustproof screw rod, the nut 200 repeatedly moves on the screw rod 100, when dust falls on the outer spiral groove 111 of the screw rod 100, the inner wall of the dust removal ring 300 is provided with a hairbrush 310 and a through dust removal hole 320, the hairbrush 310 is responsible for sweeping out the dust in the outer spiral groove 111, and the swept out dust is sucked out of the dustproof screw rod through the dust removal hole 320, so that the purpose of dust removal is achieved. Furthermore, the balls 240 can reduce the friction between the nut 200 and the screw 100, so that the nut 200 can move on the screw 100 more quickly, and dust can enter between the nut 200 and the screw 100, which can cause the nut 200 to rotate unsmoothly, thus affecting normal use. Meanwhile, dust can cause slight shaking in use, the stability is poor, and the service life is influenced. The dust on the screw 100 is removed, so that the friction force between the nut 200 and the screw 100 is reduced, the stability of the nut and the screw is improved, and the service life is prolonged.

The dust absorption hole is connected with an air pump through an air pipe. The air pump provides negative pressure for the dust absorption hole, and the brush sweeps out the dust in the outer spiral groove, and the dust is subjected to dust absorption Kong Xizou to achieve the dust removal effect. Among them, air pumps are well established prior art.

It will be appreciated that the inner spiral groove 220 and the outer spiral groove 111 are engaged with each other by the balls 240, and the reciprocating movement on the body 110 is well known in the art.

In another embodiment of the present invention, as shown in fig. 2, a dust suction hole 320 is formed at both sides of each brush 310. The number of the brushes 310 is several, and the brushes 310 are uniformly distributed on the dust removing ring 300. The number of the dust suction holes 320 is several, and the dust suction holes 320 are formed at both sides of the brush 310 and are uniformly distributed on the dust removing ring 300. Specifically, the brushes 310 and the dust suction holes 320 are uniformly distributed on the dust removing ring, so that dust cleaning and dust absorption effects are good, and the problems that the friction force between the nut 200 and the screw 100 is increased, the stability is reduced, the service life is shortened and the like due to the fact that dust is not cleaned and absorbed in place can be avoided.

In another embodiment of the present invention, as shown in fig. 1, one end of the first connecting portion 120 away from the main body 110 is provided with a groove 121 surrounding the screw rod. The second connection portion 130 includes a spiral groove 131 and a connection rod 132; one end of the spiral groove 131 is connected to the body 110, and the other end is connected to the connection rod 132. Specifically, the first connection part 120 and the second connection part 130 have one end connected to the main body 110 and the other end connected to a working part (not shown) required by the lead screw, and the working part can be more stably connected by the groove 121 of the first connection part 120 and the spiral groove 131 of the second connection part 130, thereby improving the precision of the operation.

In another embodiment of the present invention, as shown in fig. 1-3, the surface of the nut 200 is provided with a first protective layer (not shown). The surface of the screw 100 is provided with a second protective layer (not shown). The thickness of the first protective layer and the second protective layer is 0.05-0.08cm. The first protective layer and the second protective layer are both made of metal fluorocarbon paint. Specifically, the metal fluorocarbon paint has good weather resistance, strong leveling property, good decorative property of a paint film, high brightness and hardness, good chemical resistance and excellent mechanical property. Through the use of the first protective layer and the second protective layer, the wear resistance and the corrosion resistance of the screw 100 and the nut 200 can be effectively improved, and the phenomenon of precision reduction caused by long-term use of the device is avoided.

It is understood that metallic fluorocarbon paints are mature prior art.

In another embodiment of the present invention, as shown in fig. 3, the nut 200 further includes a through hole 250, the through hole 250 is communicated with the return channel 230, and specifically, the ball 240 is disposed in the return channel 230 through the through hole 250, which is simple and fast. It can be understood that, during the use of the screw, the through hole 250 is in a closed state, and the through hole 250 can be blocked by a piston (not shown) or other objects, when a ball needs to be added, the through hole 250 is opened, and after the addition is completed, the through hole 250 is continuously blocked.

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. A dustproof screw rod is characterized by comprising a screw rod and a nut; the screw comprises a main body, a first connecting part and a second connecting part, wherein the first connecting part and the second connecting part are arranged at two ends of the main body; the outer wall of the main body is provided with an outer spiral groove, an inner cavity is formed in the nut, an inner spiral groove is formed in the inner cavity, the nut is nested outside the outer spiral groove, and the inner spiral groove and the outer spiral groove are matched with each other through balls; the nut one side is equipped with the dust ring, a plurality of brushes have been laid to the annular on the inner wall of the annular ring of dust ring, the brush hair butt of brush outer spiral groove, the outer wall of dust ring runs through and is equipped with the intercommunication a plurality of dust absorption holes of annular hole.

2. The dustproof screw rod according to claim 1, wherein the dust suction hole is formed on each of both sides of each of the brushes.

3. The dustproof screw rod according to claim 1, wherein the dust suction holes are uniformly distributed on the dust removal ring, and the dust suction holes are connected with an air pump through an air pipe.

4. The dustproof screw rod according to claim 1, wherein one end of the first connecting part, which is far away from the main body, is provided with a groove surrounding the screw rod.

5. The dust-proof lead screw of claim 1, wherein the second connecting portion comprises a spiral groove and a connecting rod; one end of the spiral groove is connected to the main body, and the other end of the spiral groove is connected to the connecting rod.

6. The dustproof screw according to claim 1, wherein the surface of the nut is provided with a first protective layer.

7. The dustproof screw rod according to claim 6, wherein a second protective layer is arranged on the surface of the screw rod.

8. The dustproof screw rod according to claim 7, wherein the thickness of each of the first protective layer and the second protective layer is 0.05-0.08cm.

9. The dustproof screw rod according to claim 8, wherein the first protective layer and the second protective layer are both made of metal fluorocarbon paint.

10. The dustproof screw rod according to any one of claims 1 to 9, wherein a return passage is provided at the top of the inner cavity, balls are connected in the return passage, and the nut further comprises a through hole which is communicated with the return passage.