Roller linear guide rail

Abstract

The invention relates to the technical field of roller guide rails, and discloses a roller linear guide rail which comprises a sliding rail, a sliding base, two lubricating structures, an air injection structure and two air supply structures. Wherein the sliding seat is assembled on the sliding rail in a sliding mode, two first open grooves, a second open groove and two third open grooves are formed in the sliding seat, and two air exhaust grooves are formed in the groove walls of the two third open grooves; the two lubricating structures are arranged in the two first open grooves correspondingly. The air injection structure is arranged in the second open groove, and the air injection structure is located between the two lubricating structures. Through the two lubricating structures arranged on the sliding seat, automatic lubrication of the sliding seat and the sliding rail in the moving process is achieved, friction and abrasion are remarkably reduced, and therefore the service life of the sliding rail and the sliding seat is prolonged, and the requirement for manual maintenance is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of roller guide rails, and in particular to a roller linear guide rail. Background Art

[0002] Roller linear guide is a high-precision transmission component, which is widely used in heavy machine tools and precision instrument industries. It is specially developed for machine tools and industrial robots. It is mainly composed of four parts: slider, guide rail, roller and return device. The axial guide of the roller support of the roller linear guide is divided into different accuracy levels, and has extremely high load-bearing capacity and high rigidity.

[0003] After searching, the Chinese patent with the announcement number CN117189777A discloses a precision roller linear guide rail, which includes a guide rail and a slider assembly. The slider assembly is slidably arranged on the guide rail along the length direction of the guide rail; a circulating walkway is formed between the slider assembly and the guide rail, and rollers are arranged in the circulating walkway; wherein, an anti-slip mechanism is provided at a position of the circulating walkway close to the guide rail to prevent the rollers from falling off. The above scheme improves the stability of the rollers in the slider assembly by leaving anti-slip mechanisms at both the upper and lower ends of the walkway, improves the convenience of installing the slider assembly and the smoothness of the operation of the linear guide rail, but the above scheme still has the following shortcomings when actually used:

[0004] The roller guide rail proposed in the above scheme does not have the function of self-lubrication. The staff needs to remove the slide from the guide rail regularly. This step is not only cumbersome and time-consuming, increasing the maintenance workload, but may also affect the accuracy of the guide rail and the slide due to frequent disassembly and assembly, which may lead to a decline in the overall performance of the equipment in the long run. More importantly, the lubrication of the rollers in the slide requires the staff to have high professional skills and carefulness to ensure the uniformity and sufficiency of lubrication. Once the lubrication is improper, it will not only accelerate the wear of the rollers and guide rails and shorten the service life of the equipment, but may also cause problems such as increased operating noise and unstable movement. In severe cases, it may even cause equipment failure, affecting production efficiency and safety.

[0005] Therefore, it is necessary to design a roller linear guide to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a roller linear guide.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A roller linear guide rail comprises a slide rail, a slide seat, two lubrication structures, an air injection structure and two air supply structures;

[0009] The slide seat is slidably mounted on the slide rail, and the slide seat is provided with two first slots, one second slot and two third slots, and the slot walls of the two third slots are each provided with two air extraction slots;

[0010] Wherein, the two lubrication structures are respectively arranged in the two first slots;

[0011] Wherein, the jet structure is arranged in the second slot, and the jet structure is located between the two lubrication structures;

[0012] Wherein, the two air supply structures are respectively arranged in the two third slots.

[0013] As a preferred technical solution of the present invention, the lubrication structure includes a movable seat, a self-lubricating block and a plurality of booster springs. The movable seat is slidably arranged in the first slot, the side surface of the movable seat and the slot wall of the first slot are in contact with each other, the self-lubricating block is placed inside the movable seat, one end of each of the booster springs is connected to the bottom of the first slot, and the other end of each of the booster springs is connected to the movable seat.

[0014] As a preferred technical solution of the present invention, the shape of the self-lubricating block is matched with the movable seat, and the self-lubricating block is made of graphite material.

[0015] As a preferred technical solution of the present invention, the jet structure includes an jet pipe and a plurality of jet holes, the jet pipe is fixed in the second slot, the plurality of jet holes are opened on the jet pipe, the plurality of jet holes are divided into two rows, and the number of the jet holes in the two rows is the same, and the two rows of jet holes are respectively arranged in the direction of two self-lubricating blocks.

[0016] As a preferred technical solution of the present invention, the air supply structure includes a first rotating shaft, a driving wheel, a second rotating shaft, an air suction piece, a transmission gear set, an air inlet and an air guide pipe. The first rotating shaft is rotatably installed in the third slot, and the second rotating shaft is rotatably installed in the air extraction slot. The first rotating shaft and the second rotating shaft are connected by a transmission gear set. The driving wheel is fixedly mounted on the first rotating shaft, and part of the driving wheel extends to the outside of the third slot. The air suction piece is fixedly mounted on the second rotating shaft, and the air suction piece is placed inside the air extraction slot. The air inlet is opened on the side of the slide seat, and the air inlet is connected to the air extraction slot. One end of the air guide pipe is connected to the air extraction slot, and the other end is connected to the injection pipe.

[0017] As a preferred technical solution of the present invention, the air suction member includes a sleeve and a plurality of axial flow blades, the sleeve is fixedly mounted on the second rotating shaft, each of the axial flow blades is fixed on the sleeve, and the plurality of axial flow blades are distributed in a circumferential array.

[0018] As a preferred technical solution of the present invention, dust collecting structures are provided on both sides of the slide rail, and each of the dust collecting structures is composed of a collecting member and a pressing member;

[0019] Among them, the collecting piece includes a collecting box, a rotating cover and two arc-shaped spring pieces. The collecting box is arranged on the side of the slide rail, the top of the collecting box is open, the rotating cover is rotatably installed at the top position of the collecting box, and the two arc-shaped spring pieces are respectively fixed at the two ends inside the collecting box, and the two arc-shaped spring pieces both resist the rotating cover.

[0020] As a preferred technical solution of the present invention, the lower pressure piece includes a fixed frame, a through opening and a pressure rod. The fixed frame is fixed at the end position of the collection box, the through opening is opened on the fixed frame, the pressure rod is slidably arranged in the through opening, the bottom end of the pressure rod is arranged opposite to the rotating cover plate, and the top end of the pressure rod is located on the moving path of the slide seat.

[0021] As a preferred technical solution of the present invention, the top end of the pressure rod has a rounded corner.

[0022] As a preferred technical solution of the present invention, the collection box is detachably arranged on the side of the slide rail.

[0023] The present invention has the following beneficial effects:

[0024] 1. The two lubrication structures on the slide seat realize automatic lubrication of the slide seat and the slide rail during movement. The self-lubricating block is made of graphite material and continuously produces carbon powder during the friction with the slide rail. These carbon powders form a protective oxide film after chemical reaction with oxygen, which effectively covers the lubrication surface and significantly reduces friction and wear, thereby extending the service life of the slide rail and the slide seat and greatly reducing the need for manual maintenance. This automatic lubrication mechanism not only improves work efficiency, but also reduces the risk of failure caused by improper manual lubrication.

[0025] 2. By introducing the jet structure and the air supply structure, the lubrication effect between the slide rail and the slide seat is further enhanced. The continuous operation of the jet structure and the air supply structure enables the several jet holes on the jet pipe to continuously eject airflow. These airflows effectively blow the carbon powder generated by the friction of the two self-lubricating blocks to both sides of the slide seat. This design ensures that the carbon powder can be more evenly distributed between the slide rail and the slide seat, avoiding excessive accumulation or loss of carbon powder in certain areas, thereby improving the uniformity and effect of lubrication. Secondly, after being blown by the airflow, the carbon powder can fall on several ball surfaces on the slide seat, effectively reducing the friction and wear between the ball and the slide rail, and improving the operation efficiency and life of the ball.

[0026] 3. The air supply structure drives the rotation of the first rotating shaft through the friction between the driving wheel and the slide rail, and then drives the second rotating shaft and the air suction part thereon to rotate through the transmission gear set. This design cleverly utilizes the power during the movement of the slide seat, does not require an external air source, and reduces the energy consumption and cost of the equipment.

[0027] 4. The dust collection structure effectively solves the problem of carbon powder falling along the surface of the slide rail and possibly scattering everywhere. Through the design of the rotating cover, when the slide seat does not squeeze the pressure rod, the rotating cover is just in a horizontal state, completely covering the top opening of the collection box, thereby preventing the carbon powder from scattering and flying, and maintaining a clean working environment. When the slide seat moves to the end position of the collection box and squeezes the pressure rod, the pressure rod moves downward and applies pressure to the rotating cover, causing the rotating cover to rotate and be in a tilted state. At this time, the carbon powder accumulated on the rotating cover will slide smoothly into the collection box along the tilted rotating cover, realizing automatic collection of carbon powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic structural diagram of a roller linear guide proposed by the present invention;

[0029] Figure 2 It is a structural schematic diagram of the slide;

[0030] Figure 3 It is a schematic diagram of the cross-sectional structure of the slide seat;

[0031] Figure 4 It is a structural schematic diagram of the slide from another perspective;

[0032] Figure 5 is a structural schematic diagram of the air supply structure;

[0033] Figure 6 It is a schematic diagram of the structure of the dust collection structure;

[0034] Figure 7 It is a schematic diagram of the cross-sectional structure of the collection box;

[0035] Figure 8 for Figure 3 A magnified view of the structure at A;

[0036] Fig. 9 for Figure 4 Enlarged view of the structure at B.

[0037] In the figure: 1. slide rail; 2. slide seat; 201. first slot; 202. second slot; 203. third slot; 204. air extraction slot; 31. movable seat; 32. self-lubricating block; 33. booster spring; 41. jet pipe; 42. jet hole; 51. first rotating shaft; 52. driving wheel; 53. second rotating shaft; 54. air suction member; 55. transmission gear set; 56. air inlet; 57. air guide tube; 61. collecting box; 62. rotating cover plate; 63. arc-shaped spring piece; 71. fixing frame; 72. through port; 73. pressure rod. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] Reference Figure 1-9 A roller linear guide includes a slide rail 1, a slide seat 2, two lubrication structures, an air jet structure and two air supply structures. The slide seat 2 is slidably assembled on the slide rail 1. The slide seat 2 is provided with two first slots 201, a second slot 202 and two third slots 203. Two exhaust slots 204 are provided on the slot walls of the two third slots 203.

[0040] The two lubrication structures are respectively arranged in the two first slots 201, and the lubrication structures include a movable seat 31, a self-lubricating block 32 and a plurality of booster springs 33. The movable seat 31 is slidably arranged in the first slot 201, and the side surface of the movable seat 31 is in contact with the slot wall of the first slot 201. The self-lubricating block 32 is placed inside the movable seat 31. The shape of the self-lubricating block 32 is adapted to the movable seat 31. The self-lubricating block 32 is made of graphite material, one end of each booster spring 33 is connected to the slot bottom of the first slot 201, and the other end of each booster spring 33 is connected to the movable seat 31. Under the elastic force of the plurality of booster springs 33, the movable seat 31 always has a tendency to approach the slide rail 1, which makes the self-lubricating block 32 always in a state of pressing the top surface of the slide rail 1. Therefore, in the process of following the movement of the slide seat 2, the self-lubricating block 32 will continuously rub against the top surface of the slide rail 1, and the generated carbon powder plays a role of automatic lubrication for the slide rail 1 and the slide seat 2.

[0041] The jet structure is arranged in the second slot 202, and the jet structure is located between the two lubrication structures. The jet structure includes a jet tube 41 and a plurality of jet holes 42. The jet tube 41 is fixed in the second slot 202. The plurality of jet holes 42 are all opened on the jet tube 41. The plurality of jet holes 42 are divided into two rows, and the number of the two rows of jet holes 42 is the same. The two rows of jet holes 42 are respectively arranged in the direction of the two self-lubricating blocks 32. The airflow ejected from the plurality of jet holes 42 can blow the powder generated by the friction of the two self-lubricating blocks 32 to the two sides of the slide 2, so that the carbon powder falls on the surfaces of the plurality of balls on the slide 2, which has a lubricating effect on the rollers, thereby ensuring the lubrication effect between the slide rail 1 and the slide 2.

[0042] The two air supply structures are respectively arranged in the two third slots 203, and the air supply structure includes a first rotating shaft 51, a driving wheel 52, a second rotating shaft 53, an air suction member 54, a transmission gear set 55, an air inlet 56 and an air guide pipe 57. The first rotating shaft 51 is rotatably installed in the third slot 203, and the second rotating shaft 53 is rotatably installed in the air extraction slot 204. The first rotating shaft 51 and the second rotating shaft 53 are connected by a transmission gear set 55. The driving wheel 52 is fixedly sleeved on the first rotating shaft 51, and a part of the driving wheel 52 extends to the outside of the third slot 203. The air suction member 54 is fixedly sleeved on the second rotating shaft 53, and the air suction member 54 is placed inside the air extraction slot 204. The air suction member 54 includes a sleeve and a plurality of axial flow blades. The sleeve is fixedly sleeved on the second rotating shaft 53, each axial flow blade is fixed on the sleeve, and the plurality of axial flow blades are distributed in a circumferential array. The air inlet 56 is opened on the side of the slide 2, and the air inlet 56 is connected to the air extraction slot 2 04 are connected, one end of the air guide pipe 57 is connected to the air extraction groove 204, and the other end is connected to the injection pipe 41. The driving wheel 52 is made of rubber material, which makes the driving wheel 52 have a large friction force with the slide rail 1. The driving wheel 52 can rotate under the action of the friction force and drive the first rotating shaft 51 to rotate. When the first rotating shaft 51 rotates, it can drive the second rotating shaft 53 to rotate through the transmission gear set 55, and the suction member 54 arranged on the second rotating shaft 53 will rotate accordingly. For the suction member 54, several axial flow blades therein can perform suction action when rotating, and extract air from the external environment through the air inlet 56, so that the gas enters the interior of the suction groove 204 through the air inlet 56. Further, the gas will enter the interior of the Peng intake pipe through the air guide pipe 57, and finally be ejected through several injection holes 42. The injection action is conducive to a more uniform distribution of carbon powder between the slide rail 1 and the slide seat 2.

[0043] Dust collecting structures are provided on both sides of the slide rail 1, and each dust collecting structure is composed of a collecting member and a pressing member. The collecting member includes a collecting box 61, a rotating cover plate 62 and two arc-shaped spring pieces 63. The collecting box 61 is arranged on the side of the slide rail 1, and the collecting box 61 is detachably arranged on the side of the slide rail 1, so that the staff can uniformly handle the carbon powder collected inside the collecting box 61. The top of the collecting box 61 is open, and the rotating cover plate 62 is rotatably installed at the top position of the collecting box 61. The two arc-shaped spring pieces 63 are respectively fixed at the two ends inside the collecting box 61, and the two arc-shaped spring pieces 63 both resist the rotating cover plate 62. The pressing member includes a fixing frame 71, a through opening 72 and a pressing rod 73. The fixing frame 71 is fixed at the end position of the collecting box 61, and the through opening 72 is opened on the fixing frame 71. The pressing rod 73 is slidably arranged in the through opening 72. The bottom end of the pressing rod 73 is arranged opposite to the rotating cover plate 62, and the top of the pressing rod 73 is The end is located on the moving path of the slide 2, and the top end of the pressure rod 73 has a rounded corner. When the slide 2 does not squeeze the pressure rod 73, under the elastic force of the two arc-shaped spring pieces 63, the rotating cover 62 is just in a horizontal state. At this time, the rotating cover 62 completely blocks the top opening of the collecting box 61, and the powder scattered from between the slide 2 and the slide rail 1 will fall on the rotating cover 62 and temporarily accumulate on the rotating cover 62. When the slide 2 moves to the end position of the collecting box 61, the slide 2 will squeeze the top end of the pressure rod 73. When squeezed, the pressure rod 73 will move downward and apply downward pressure to the rotating cover 62, causing the rotating cover 62 to rotate. When the rotating cover 62 rotates, the rotating cover 62 is in a tilted state. At this time, the carbon powder accumulated on the rotating cover 62 will slide into the interior of the collecting box 61 along the tilted rotating cover 62, thereby realizing automatic collection of the carbon powder.

[0044] The specific working principle of the present invention is as follows:

[0045] The roller linear guide proposed in the present invention has the function of automatic lubrication. Specifically, two lubrication structures are arranged on the slide 2. When the slide 2 moves on the slide rail 1, the two lubrication structures automatically lubricate the slide 2 and the slide rail 1. Since the specific structures of the two lubrication structures are exactly the same, only any one of the lubrication structures is described in detail here: for the lubrication structure, under the elastic force of a plurality of booster springs 33, the movable seat 31 always has a tendency to approach the slide rail 1, which makes the self-lubricating block 32 always in a state of pressing the top surface of the slide rail 1. Therefore, when the self-lubricating block 32 follows the movement of the slide 2, the self-lubricating block 32 will continuously rub against the top surface of the slide rail 1. The self-lubricating block 32 is made of graphite material. Therefore, when the self-lubricating block 32 rubs against the slide rail 1, it will continuously generate carbon powder. The main component of the carbon powder is carbon. As an active element, carbon will chemically react with oxygen when rubbing against the lubricating substance to form an oxide film. This oxide film can cover the lubricating surface to play a protective role, reduce friction and wear, and thus improve the lubrication effect.

[0046] In addition, the microscopic particles in the carbon powder have a tiny size and a special shape. These particles can fill the depressions and uneven parts of the lubrication surface, thereby effectively reducing the friction area of ​​the lubrication surface and further reducing the friction resistance. At the same time, the harder particles in the carbon powder can roll on the contact surface to form a ball effect, which helps to improve the pressure distribution in the contact area and increase the film thickness ratio, thereby further improving the lubrication performance. The carbon powder particles with smaller particle size can penetrate into the cracks to avoid high pressure in the cracks, which also plays a positive role in promoting the lubrication effect. Therefore, these carbon powders have an automatic lubrication effect on the slide rail 1 and the slide seat 2. In addition, the self-lubricating block 32 can always be in a state of pressing the slide rail 1 under the elastic force of several booster springs 33, ensuring the continuous generation of carbon powder. This special design replaces the roller guide structure, and there is no need for staff to manually add lubricant or apply lubricating paste to the slide seat 2.

[0047] In order to make the carbon powder more evenly distributed between the slide rail 1 and the slide seat 2, the present invention designs an injection structure and an air supply structure. When the slide seat 2 moves on the slide rail 1, the injection structure and the air supply structure continue to operate, and the injection action is performed by a plurality of injection holes 42 on the injection pipe 41. Since the injection pipe 41 is arranged between the two self-lubricating blocks 32, the airflow ejected from the plurality of injection holes 42 can blow the powder generated by the friction of the two self-lubricating blocks 32 to both sides of the slide seat 2, so that the carbon powder falls on the surfaces of a plurality of balls on the slide seat 2, which has a lubricating effect on the rollers, thereby ensuring the lubrication effect between the slide rail 1 and the slide seat 2.

[0048] As for the air supply structure, when the slide 2 moves on the slide rail 1, the driving wheel 52 will always be in contact with the slide rail 1. The driving wheel 52 is made of rubber material, which makes the driving wheel 52 and the slide rail 1 have a large friction force. The driving wheel 52 can rotate under the action of the friction force and drive the first rotating shaft 51 to rotate. When the first rotating shaft 51 rotates, it can drive the second rotating shaft 53 to rotate through the transmission gear set 55, and the suction member 54 arranged on the second rotating shaft 53 will rotate accordingly. For the suction member 54, several axial flow blades therein can perform a suction action when rotating, and draw air from the external environment through the air inlet 56, so that the gas enters the interior of the suction groove 204 through the air inlet 56. Further, the gas will enter the interior of the Peng intake pipe through the air guide pipe 57, and finally be ejected through a number of jet holes 42. The jet action is conducive to a more uniform distribution of carbon powder between the slide rail 1 and the slide 2.

[0049] In addition, it should be pointed out that the carbon powder distributed between the slide rail 1 and the slide seat 2 may fall along the surface of the slide rail 1. In order to avoid the phenomenon of carbon powder flying everywhere, two dust collection structures are provided in the present invention for collecting the carbon powder falling from the slide seat 2. For the dust collection structure, when the slide seat 2 does not squeeze the pressure rod 73, under the elastic force of the two arc-shaped spring pieces 63, the rotating cover plate 62 is just in a horizontal state. At this time, the rotating cover plate 62 completely blocks the top opening of the collection box 61. The powder scattered from between the slide seat 2 and the slide rail 1 will fall on the rotating cover plate 62 and temporarily accumulate on the rotating cover plate 62. When the slide seat 2 moves to the end position of the collection box 61, the slide seat 2 will squeeze the top of the pressure rod 73. When the pressure rod 73 is squeezed, it will move downward and apply downward pressure to the rotating cover plate 62, causing the rotating cover plate 62 to rotate. When rotating, the rotating cover 62 is in a tilted state. At this time, the carbon powder accumulated on the rotating cover 62 will slide into the interior of the collection box 61 along the tilted rotating cover 62, thereby realizing automatic collection of the carbon powder. When the slide 2 is separated from the pressure rod 73, the rotating cover 62 will be reset under the elastic force of the two arc-shaped spring pieces 63, and will cover the top opening of the collection box 61 again. Based on the above process, during the movement of the slide 2, the rotating cover 62 will only rotate when the slide 2 moves to the end position of the collection box 61 and squeezes the pressure rod 73. At this time, the carbon powder will slide into the collection box 61. In other cases, the rotating cover 62 is in a position to block the top opening of the collection box 61. This design can prevent the top opening of the collection box 61 from always being in an open state, thereby preventing the carbon powder that has entered the collection box 61 from flying out of the collection box 61 again.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A roller linear guide, characterized in that: It comprises a slide rail (1), a slide seat (2), two lubrication structures, an air injection structure and two air supply structures; The slide seat (2) is slidably mounted on the slide rail (1); the slide seat (2) is provided with two first slots (201), one second slot (202) and two third slots (203); and the slot walls of the two third slots (203) are each provided with two air extraction slots (204); Wherein, the two lubrication structures are respectively arranged in the two first slots (201); Wherein, the jet structure is arranged in the second slot (202), and the jet structure is located between the two lubrication structures; Wherein, the two air supply structures are respectively arranged in the two third slots (203).

2. The roller linear guide according to claim 1, characterized in that: The lubrication structure comprises a movable seat (31), a self-lubricating block (32) and a plurality of booster springs (33); the movable seat (31) is slidably arranged in the first slot (201); the side surface of the movable seat (31) and the slot wall of the first slot (201) are in contact with each other; the self-lubricating block (32) is placed inside the movable seat (31); one end of each of the booster springs (33) is connected to the slot bottom of the first slot (201); and the other end of each of the booster springs (33) is connected to the movable seat (31).

3. The roller linear guide according to claim 2, characterized in that: The shape of the self-lubricating block (32) is matched with the movable seat (31), and the self-lubricating block (32) is made of graphite material.

4. The roller linear guide according to claim 3, characterized in that: The jet structure comprises an jet pipe (41) and a plurality of jet holes (42); the jet pipe (41) is fixed in the second slot (202); the plurality of jet holes (42) are all provided on the jet pipe (41); the plurality of jet holes (42) are divided into two rows, and the number of the jet holes (42) in the two rows is the same; the two rows of jet holes (42) are respectively arranged towards the direction of the two self-lubricating blocks (32).

5. The roller linear guide according to claim 4, characterized in that: The air supply structure comprises a first rotating shaft (51), a driving wheel (52), a second rotating shaft (53), an air suction member (54), a transmission gear set (55), an air inlet (56) and an air guide pipe (57); the first rotating shaft (51) is rotatably mounted in the third slot (203); the second rotating shaft (53) is rotatably mounted in the air extraction slot (204); the first rotating shaft (51) and the second rotating shaft (53) are transmission-connected via the transmission gear set (55); the driving wheel (52) is fixedly sleeved with the air inlet (56) and the air suction member (57); On the first rotating shaft (51), a portion of the driving wheel (52) extends to the outside of the third slot (203), the air suction member (54) is fixedly sleeved on the second rotating shaft (53), and the air suction member (54) is placed inside the air extraction slot (204), the air inlet (56) is opened on the side of the sliding seat (2), the air inlet (56) is connected to the air extraction slot (204), one end of the air guide pipe (57) is connected to the air extraction slot (204), and the other end is connected to the air injection pipe (41).

6. The roller linear guide according to claim 5, characterized in that: The air suction member (54) comprises a sleeve and a plurality of axial flow blades. The sleeve is fixedly sleeved on the second rotating shaft (53). Each of the axial flow blades is fixed on the sleeve. The plurality of axial flow blades are distributed in a circumferential array.

7. The roller linear guide according to any one of claims 1 to 6, characterized in that: Dust collecting structures are arranged on both sides of the slide rail (1), and each of the dust collecting structures is composed of a collecting part and a pressing part; The collecting member comprises a collecting box (61), a rotating cover plate (62) and two arc-shaped spring sheets (63); the collecting box (61) is arranged on the side of the slide rail (1); the top of the collecting box (61) is open; the rotating cover plate (62) is rotatably mounted on the top of the collecting box (61); the two arc-shaped spring sheets (63) are respectively fixed at two ends inside the collecting box (61); and the two arc-shaped spring sheets (63) both abut against the rotating cover plate (62).

8. The roller linear guide according to claim 7, characterized in that: The pressing member comprises a fixing frame (71), a through opening (72) and a pressing rod (73); the fixing frame (71) is fixed at the end position of the collecting box (61); the through opening (72) is opened on the fixing frame (71); the pressing rod (73) is slidably arranged in the through opening (72); the bottom end of the pressing rod (73) is arranged opposite to the rotating cover plate (62); and the top end of the pressing rod (73) is located on the moving path of the sliding seat (2).

9. The roller linear guide according to claim 8, characterized in that: The top end of the pressure rod (73) is rounded.

10. The roller linear guide according to claim 7, characterized in that: The collecting box (61) is detachably arranged on the side of the slide rail (1).

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