CN218670212U

CN218670212U - Anti-leakage sliding block and guide rail

Info

Publication number: CN218670212U
Application number: CN202222865255.7U
Authority: CN
Inventors: 陈险生; 扶坤旭
Original assignee: Huizhou Shenkeda Intelligent Equipment Co ltd
Current assignee: Huizhou Shenkeda Intelligent Equipment Co ltd
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-03-21
Anticipated expiration: 2032-10-27

Abstract

The application provides a prevent slider and guide rail of leakage. The slider includes slider body, end cover and sealing member, and the slider body is equipped with sharp passageway, and the end cover is equipped with the passageway that turns to of intercommunication sharp passageway, and the sealing member is located between slider body and the end cover. The sealing member includes a sealing plate and an adsorption sheet. The sealing plate is provided with a through hole which is communicated with the linear channel and the steering channel. The absorption sheet is arranged on the sealing plate and surrounds the through hole. The side wall of slider body and the lateral wall of end cover are pasted to the adsorption plate. Through setting up the closing plate that is equipped with the absorption piece between end cover and slider body for the absorption piece can seal the junction between direct line passageway and the turning to the passageway through hugging closely the lateral wall of slider body and the lateral wall of end cover. Simultaneously, when the compactness because of adsorbing the piece and slider body and end cover laminating is not enough and leads to lubricating oil to flow, adsorb the piece and expand through adsorbing lubricating oil to make the piece of adsorbing closely laminate with slider body and end cover.

Description

Anti-leakage sliding block and guide rail

Technical Field

The application relates to the technical field of guide rails, in particular to a leakage-proof sliding block and a guide rail.

Background

The linear guide rail is also called a linear rail, a slide rail, a linear guide rail or a linear slide rail, is used as a moving part for supporting and guiding, and is widely applied to various precise linear transmission devices. When the linear guide rail works, the linear guide rail does reciprocating linear motion along a given direction, and high-precision linear motion can be realized under the condition of high load. However, the balls are lubricated by the lubricating oil during the operation of the linear guide rail, so that the normal operation of the linear guide rail is ensured, and the service life of the linear guide rail is prolonged.

The slider in the linear guide rail generally includes a slider body and an end cap, and by mounting the end cap on the slider body, it is possible to encapsulate the ball in a roller circuit in the slider body, and to reduce friction between the ball and the slider body by adding lubricating oil in the roller circuit. However, in practical applications, a small gap may be generated between the end cap and the slider body due to installation or manufacturing errors, so that the lubricant in the roller circuit flows out along the small gap between the end cap and the slider body, thereby causing a problem of leakage of the lubricant.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a sliding block and a guide rail with leakage prevention, which are aimed at preventing the leakage of the lubricant in the sliding block.

An embodiment of the present application provides a leakage-proof slider. The slider includes a slider body, an end cap, and a seal. The slider body is provided with a linear channel. The end cover is provided with a steering channel communicated with the linear channel. The seal is disposed between the slider body and the end cap. The sealing member includes a sealing plate and an adsorption sheet. The sealing plate is provided with a through hole. The through hole is communicated with the linear channel and the steering channel. The adsorption piece is arranged on the sealing plate and surrounds the through hole, the adsorption piece is attached to the side wall of the sliding block body and the side wall of the end cover, and the adsorption piece can expand after adsorbing lubricating oil.

In the above embodiment, the adsorption sheet is disposed around the through hole of the sealing plate, and then the sealing plate with the adsorption sheet is disposed between the end cover and the slider body, so that the adsorption sheet can seal the joint between the linear channel and the steering channel by closely adhering to the side wall of the slider body and the side wall of the end cover, thereby preventing the leakage of the lubricating oil. Simultaneously, when the compactness because of adsorbing the piece and slider body and end cover laminating is not enough and leads to lubricating oil to flow, adsorb the piece and expand through adsorbing lubricating oil to make the piece of adsorbing closely laminate with slider body and end cover, thereby further prevent that lubricating oil from leaking.

In at least one embodiment, the adsorption sheet includes two sealing portions, the two sealing portions are respectively disposed on the side walls of the sealing plate, one of the sealing portions is attached to the side wall of the slider body, and the other sealing portion is attached to the side wall of the end cap.

In the above embodiment, the two sealing portions are respectively disposed on the side walls of the sealing plate, that is, one sealing portion is disposed on each of the two opposite side walls of the sealing plate, so that one sealing portion is tightly attached between the sealing plate and the slider body, and the other sealing portion is tightly attached between the sealing plate and the end cover, so as to seal the joint between the linear channel and the turning channel, thereby preventing the lubricant from leaking.

In at least one embodiment, the seal is made of an oil-swellable material.

In the above embodiment, the sealing portion is made of the oil-absorbing expansion material, so that when the tightness of the sealing portion in contact with the slider body and the end cover is insufficient, the sealing portion can expand through oil absorption, so that the sealing portion is in contact with the slider body and the end cover, and the joint between the linear channel and the steering channel is sealed, thereby further preventing the leakage of the lubricating oil.

In at least one embodiment, the absorbent sheet further comprises an adhesive portion provided on a side wall of the sealing portion, the adhesive portion being configured to connect the sealing portion and the sealing plate.

In the above embodiment, the sealing portion can be adhered to the sealing plate by providing the adhesive portion on the sealing portion, which facilitates and speedily operates the assembly of the sealing portion and the sealing plate.

In at least one embodiment, the suction piece further comprises a connecting portion, the connecting portion penetrates through the inner wall of the through hole, and the end portions of the connecting portion are respectively connected with the two sealing portions.

In the above embodiment, the connecting portion connects the two sealing portions and the sealing plate, so that the sealing portions are provided on the sealing plate.

In at least one embodiment, the material of the connecting portion is the same as the material of the end cap.

In the above embodiment, the connecting portion is made of the same material as the end cover, so that the degree of wear of the ball and the end cover is the same as the degree of wear of the ball and the connecting portion, and the problem that the end cover or the connecting portion first reaches the failure standard to cause waste and parts which do not reach failure is avoided, and the waste of materials can be reduced.

In at least one embodiment, the sealing plate is provided with a mounting groove, the mounting groove is arranged around the through hole, the suction piece further comprises a fixing part, the fixing part is connected with the sealing part, and the fixing part is arranged in the mounting groove.

In the above embodiment, the sealing plate is provided with the mounting groove surrounding the through hole, and the sealing portion is provided with the fixing portion, so that the sealing portion connected with the fixing portion can be fixed on the sealing plate after the fixing portion is arranged in the mounting groove, and the connection stability of the sealing portion and the sealing plate is further improved.

In at least one embodiment, the thickness of the fixing part is greater than the thickness of the mounting groove so as to limit the fixing part in the mounting groove.

In the above-mentioned embodiment, thickness through with the fixed part sets up the thickness that is greater than the mounting groove for be interference fit between mounting groove and the fixed part, install through interference fit between mounting groove and the fixed part, need not to fix the fixed part in the mounting groove through extra fixed structure, for example screw etc..

In at least one embodiment, the material of the fixing portion is the same as the material of the sealing portion.

In the above embodiment, the fixing portion is made of a material for making the sealing portion, and if lubricating oil flows from the sealing portion to the fixing portion, the fixing portion expands after absorbing oil and abuts against the side wall of the slider body and the side wall of the end cover, so that the lubricating oil can be limited to flow out through the fixing portion after the sealing portion fails, and further the lubricating oil is prevented from leaking.

An embodiment of the present application provides a guide rail, including slide rail and the slider in any above-mentioned embodiment, the slider activity is located the slide rail.

In the above embodiment, cooperate with the slide rail through adopting the slider of preventing revealing for can obtain abundant lubrication between ball and slider and the slide rail, in order to reduce the friction between ball and slider and the slide rail, improve the life-span of guide rail.

Drawings

Fig. 1 is a schematic perspective view of a guide rail according to an embodiment of the present application.

Fig. 2 is a schematic perspective view of the slider shown in fig. 1.

Fig. 3 is a schematic perspective view of the slider body in fig. 2.

Fig. 4 is a perspective view of a sealing member of fig. 2.

Fig. 5 is a perspective view of another seal of fig. 4.

Fig. 6 is a schematic perspective view of still another sealing member shown in fig. 4.

Fig. 7 is a perspective view of an absorbent sheet of fig. 2.

Description of the main elements

Guide rail 100

Slider 10

Slider body 11

Straight channel 111

End cap 12

Diversion passage 121

Seal 13

Sealing plate 131

Through hole 1311

Mounting groove 1312

The adsorption sheet 132

Sealing part 1321

Connecting part 1322

Fixing part 1323

Slide rail 20

Ball 30

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. The terms "top," "bottom," "upper," "lower," "left," "right," "front," "rear," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

An embodiment of the present application provides a leakage-proof slider. The slider includes a slider body, an end cap, and a seal. The slider body is provided with a linear channel. The end cover is provided with a steering channel communicated with the linear channel. The seal is disposed between the slider body and the end cap. The sealing member includes a sealing plate and an adsorption sheet. The sealing plate is provided with a through hole. The through hole is communicated with the linear channel and the steering channel. The adsorption piece is arranged on the sealing plate and surrounds the through hole, the adsorption piece is attached to the side wall of the slider body and the side wall of the end cover, and the adsorption piece can expand after adsorbing lubricating oil.

In the above embodiment, the adsorption sheet is disposed around the through hole of the sealing plate, and then the sealing plate with the adsorption sheet is disposed between the end cover and the slider body, so that the adsorption sheet can seal the connection between the linear channel and the steering channel by closely adhering to the side wall of the slider body and the side wall of the end cover, thereby preventing the leakage of the lubricating oil. Simultaneously, when the compactness because of adsorbing the piece is not enough with slider body and end cover laminating leads to lubricating oil to flow, adsorb the piece and expand through adsorbing lubricating oil to make and adsorb the piece and carry out inseparable laminating with slider body and end cover, thereby further prevent lubricating oil leakage.

Some embodiments will be described below with reference to the accompanying drawings. The embodiments and features of the embodiments described below can be combined with each other without conflict.

Referring to fig. 1 to 4, an embodiment of the present application provides a guide rail 100. The guide rail 100 includes a slide rail 20 and a leak-proof slider 10. The slider 10 can slide on the slide rail 20 in a reciprocating manner. The slider 10 includes a slider body 11, an end cap 12, and a seal 13. The slider body 11 is provided with a linear channel 111. The linear passage 111 is provided with lubricating oil therein so that friction between the balls 30 and the inner wall of the linear passage 111 is reduced as the balls 30 move in the linear passage 111. The end cap 12 is disposed on an end surface of the slider body 11 for enclosing the ball 30 in the slider body 11. The end cover 12 is provided with a diverting passage 121 communicated with the straight passage 111, and lubricating oil is provided in the diverting passage 121 so that the friction between the balls 30 and the inner wall of the diverting passage 121 is reduced when the balls 30 move in the diverting passage 121. The sealing member 13 is disposed between the slider body 11 and the end cap 12 to seal a junction between the linear passage 111 of the slider body 11 and the turn passage 121 of the end cap 12, preventing leakage at the junction.

The sealing member 13 includes a sealing plate 131 and an adsorption sheet 132. The sealing plate 131 is provided with a through hole 1311. The through hole 1311 communicates the straight passage 111 and the diverting passage 121, and facilitates the ball 30 to enter the diverting passage 121 from the straight passage 111. The opposite side walls of the sealing plate 131 are provided with adsorption pieces 132, respectively. The absorption sheet 132 is disposed around the through hole 1311, and the absorption sheet 132 is attached between the side wall of the slider body 11 and the side wall of the sealing plate 131 and between the side wall of the end cap 12 and the side wall of the sealing plate 131 to seal the connection between the linear channel 111 and the turning channel 121.

By arranging the adsorption sheet 132 around the through hole 1311 of the sealing plate 131 and arranging the sealing plate 131 provided with the adsorption sheet 132 between the end cover 12 and the slider body 11, the adsorption sheet 132 can seal the connection between the linear channel 111 and the turning channel 121 by being closely attached between the side wall of the slider body 11 and the side wall of the sealing plate 131 and between the side wall of the end cover 12 and the side wall of the sealing plate 131, so as to prevent the leakage of the lubricating oil. Simultaneously, can take place the inflation after absorption piece 132 adsorbs lubricating oil, when the inseparable degree of adsorbing piece 132 and slider body 11 and end cover 12 laminating is not enough and lead to lubricating oil to flow, adsorb piece 132 and expand through adsorbing lubricating oil to make absorption piece 132 and slider body 11 and end cover 12 carry out inseparable laminating, further prevent lubricating oil leakage.

The linear channel 111 and the turning channel 121 in the slider 10 are provided with balls 30, the slide rail 20 is provided with a sliding slot, and after the slider 10 is installed on the slide rail 20, the balls 30 are located in the sliding slot of the slide rail 20. When the slider 10 moves on the slide rail 20, the balls 30 circulate in the linear channel 111 and the diverting channel 121, so that the balls 30 roll along the slide grooves of the slide rail 20. However, since the friction between the balls 30 and the inner walls of the linear passage 111 and the turn passage 121 is large, it is necessary to provide a lubricating oil in the linear passage 111 and the turn passage 121 to reduce the friction between the balls 30 and the inner walls of the linear passage 111 and the turn passage 121. If there is a gap between the end cap 12 and the slider body 11 due to installation operation or manufacturing error, that is, there is a gap at the connection between the linear channel 111 and the turning channel 121, the lubricant in the linear channel 111 and the turning channel 121 will flow out along the gap between the linear channel 111 and the turning channel 121, and the leakage of the lubricant will occur.

The lubricant oil in the slider 10 is generally collected in the linear channel 111 and the turning channel 121, and under the influence of gravity, the lubricant oil flows out from the gap with the lowest height in the vertical direction between the linear channel 111 and the turning channel 121, and because a large amount of lubricant oil is not collected in the linear channel 111 and the turning channel 121, it is sufficient to ensure that no gap is generated at the lowest height in the vertical direction between the linear channel 111 and the turning channel 121.

Referring to fig. 4, the suction sheet 132 includes two sealing portions 1321. The sealing portion 1321 is used to seal the connection between the straight passage 111 and the turn passage 121. The two sealing portions 1321 are respectively disposed on two opposite sidewalls of the sealing plate 131, one sealing portion 1321 is attached to the sidewall of the slider body 11, and the other sealing portion 1321 is attached to the sidewall of the end cap 12. By providing two sealing portions 1321 on the side wall of the sealing plate 131, that is, by providing one sealing portion 1321 on each of the two opposite side walls of the sealing plate 131, one sealing portion 1321 is tightly attached between the sealing plate 131 and the slider body 11, and the other sealing portion 1321 is tightly attached between the sealing plate 131 and the end cap 12, so as to seal the joint between the linear passage 111 and the turn passage 121, thereby preventing the leakage of the lubricant.

In other embodiments, the sealing plate 131 is provided with two adsorption sheets 132. Two suction pieces 132 are provided at opposite ends of the sealing plate 131, respectively, to simultaneously seal the junctions between the two linear passages 111 and the turn passages 121.

In one embodiment, the sealing portion 1321 is made of an oil-swelling material. By making the sealing portion 1321 of the oil-absorbing expansion material, when the tightness of the sealing portion 1321 in contact with the slider body 11 and the end cover 12 is insufficient, the sealing portion 1321 is expanded by absorbing oil, so that the sealing portion 1321 is in contact with the slider body 11 and the end cover 12, and the joint between the linear passage 111 and the turning passage 121 is sealed, thereby further preventing the leakage of the lubricating oil. Alternatively, the oil-absorbing expansion material can be oil-absorbing expansion resin, and can also be other materials capable of oil-absorbing expansion, such as expanded graphite.

In one embodiment, the absorbent sheet 132 further includes an adhesive portion (not shown). The adhesive portion is provided on the side wall of the sealing portion 1321. The adhesive portion is used to connect the sealing portion 1321 and the sealing plate 131. By providing the adhesive portion in the sealing portion 1321, the sealing portion 1321 can be adhered to the sealing plate 131 directly by the adhesive portion when the sealing portion 1321 is fixed to the sealing plate 131, and the assembly of the sealing portion 1321 and the sealing plate 131 can be easily and quickly performed. In other embodiments, the oil-absorbing expansive material in a molten state may be coated on the sealing plate 131 by spraying or painting to form the sealing portion 1321 on the sealing plate 131.

Referring to fig. 5, the suction sheet 132 further includes a connecting portion 1322. The connection part 1322 is inserted through the inner wall of the through hole 1311, and the two sealing parts 1321 are connected to the ends of the connection part 1322, respectively. By connecting the connecting portion 1322 to the two sealing portions 1321, after the connecting portion 1322 is inserted into the through hole 1311 of the sealing plate 131, the two sealing portions 1321 are located on both sides of the sealing plate 131, so that the two sealing portions 1321 are fixed to the sealing plate 131. Alternatively, the two sealing parts 1321 may be detachably coupled to the end of the coupling part 1322 by adhesive substances, respectively.

In an embodiment, the thickness of the connecting portion 1322 is the same as that of the sealing plate 131, so that after the sealing plate 131 is installed between the end cover 12 and the slider body 11, two ends of the connecting portion 1322 can respectively abut against the side wall of the end cover 12 and the side wall of the slider body 11, and a gap is prevented from being generated between the connecting portion 1322 and the end cover 12 and the slider body 11.

In one embodiment, connecting portion 1322 is a hollow cylinder. The diameter of the inner ring of the connecting portion 1322 is equal to the diameter of the straight passage 111, so as to prevent the balls 30 from striking the connecting portion 1322 when rolling from the straight passage 111 to the turning passage 121 due to the too small diameter of the inner ring of the connecting portion 1322, and prevent the balls 30 from striking the end cap 12 when rolling from the straight passage 111 to the turning passage 121 due to the too large diameter of the inner ring of the connecting portion 1322, thereby improving the smoothness of rolling of the balls 30.

In one embodiment, the material of connector 1322 is the same as the material of end cap 12. The connecting part 1322 is made of the same material as the end cover 12, so that the abrasion degree of the balls 30 and the end cover 12 is the same as that of the balls 30 and the connecting part 1322, the problem that the end cover 12 or the connecting part 1322 firstly reaches the failure standard to cause waste of parts which do not reach failure is avoided, and the waste of materials can be reduced.

Referring to fig. 6 and 7, the sealing plate 131 is provided with a mounting groove 1312. The mounting groove 1312 is disposed around the through hole 1311 for mounting the sealing portion 1321. The adsorption sheet 132 further includes a fixing portion 1323, and the fixing portion 1323 is provided in the sealing portion 1321. The fixing portion 1323 is disposed in the mounting groove 1312 to fix the sealing portion 1321 to the sealing plate 131. By providing the mounting groove 1312 surrounding the through hole 1311 in the sealing plate 131 and providing the fixing portion 1323 in the sealing portion 1321, the sealing portion 1321 connected to the fixing portion 1323 is fixed to the sealing plate 131 after the fixing portion 1323 is provided in the mounting groove 1312, thereby further improving the stability of the connection between the sealing portion 1321 and the sealing plate 131.

In one embodiment, one side of the sealing plate 131 attached to the slider body 11 and one side of the sealing plate 131 attached to the end cap 12 are respectively provided with a mounting groove 1312, so that the two side surfaces of the sealing plate 131 are respectively provided with the absorption pieces 132.

In one embodiment, the suction sheet 132 further includes a fixing portion 1323. The fixing portions 1323 are disposed at opposite sides of the sealing portion 1321, that is, each sealing portion 1321 connects two fixing portions 1323, and the two fixing portions 1323 are disposed in different mounting grooves 1312 respectively. The sealing portion 1321 is provided on the sealing plate 131 via the two fixing portions 1323, whereby the adsorption sheet 132 can be more favorably attached to the sealing plate 131.

In one embodiment, the mounting groove 1312 is a linear groove, the mounting groove 1312 surrounds the outer side of the through hole 1311, and after the fixing portion 1323 is disposed in the mounting groove 1312, the sealing portion 1321 connected to the fixing portion 1323 extends toward the through hole 1311 to surround the through hole 1311.

In one embodiment, the thickness of the fixing portion 1323 is greater than the thickness of the mounting groove 1312 to limit the fixing portion 1323 within the mounting groove 1312. By setting the thickness of the fixing part 1323 to be greater than that of the mounting groove 1312 so that the mounting groove 1312 can restrict the fixing part 1323 by interference fit, the fixing part 1323 can be fixed in the mounting groove 1312 without an additional medium. By setting the thickness of the fixing portion 1323 to be greater than that of the mounting groove 1312 so that the mounting groove 1312 and the fixing portion 1323 are in interference fit with each other, the mounting groove 1312 and the fixing portion 1323 are mounted in interference fit with each other, and the fixing portion 1323 is not fixed in the mounting groove 1312 by an additional fixing structure, such as a screw or the like.

In one embodiment, the material of the fixing portion 1323 is the same as the material of the sealing portion 1321, i.e. the fixing portion 1323 is made of an oil-absorbing expansion material. By forming the fixing portion 1323 of the material for forming the sealing portion 1321, if the lubricant flows from the sealing portion 1321 to the fixing portion 1323, the fixing portion 1323 expands after absorbing the oil and abuts against the side wall of the slider body 11 and the side wall of the end cap 12, so that the lubricant can be restricted from flowing out through the fixing portion 1323 even after the sealing effect of the sealing portion 1321 is insufficient, and the leakage of the lubricant can be further prevented.

In addition, those skilled in the art should realize that the above embodiments are illustrative only and not limiting to the present application, and that suitable changes and modifications to the above embodiments are within the scope of the disclosure of the present application as long as they are within the true spirit and scope of the present application.

Claims

1. The utility model provides a prevent slider of leakage, includes slider body, end cover and sealing member, the slider body is equipped with sharp passageway, the end cover is equipped with the intercommunication the passageway that turns to of sharp passageway, the sealing member is located the slider body with between the end cover, its characterized in that, the sealing member includes:

the sealing plate is provided with a through hole which is communicated with the linear channel and the steering channel;

the adsorption piece is arranged on the sealing plate and surrounds the through hole, the adsorption piece is attached to the side wall of the slider body and the side wall of the end cover, and the adsorption piece can expand after adsorbing lubricating oil.

2. The slider of claim 1 wherein said suction tab includes two sealing portions, said two sealing portions being disposed on respective side walls of said seal plate, one of said sealing portions being attached to a side wall of said slider body and the other of said sealing portions being attached to a side wall of said end cap.

3. The slider of claim 2 wherein said seal is made of an oil-swellable material.

4. The slider of claim 2 wherein said suction patch further comprises an adhesive portion provided on a side wall of said sealing portion, said adhesive portion being adapted to join said sealing portion and said sealing plate.

5. The slider according to claim 2, wherein said adsorption sheet further comprises a connecting portion penetrating an inner wall of said through hole, ends of said connecting portion being connected to two of said sealing portions, respectively.

6. A slider as claimed in claim 5, wherein the material of the connecting portion is the same as the material of the end cap.

7. The slider of claim 2 wherein the sealing plate has a mounting groove surrounding the through hole, the suction piece further comprises a fixing portion connected to the sealing portion, and the fixing portion is disposed in the mounting groove.

8. A slider as claimed in claim 7, wherein the dimensions of the fixing portion are greater than the dimensions of the mounting slot to confine the fixing portion within the mounting slot.

9. The slider of claim 7 wherein the material of the fixed portion is the same as the material of the sealing portion.

10. A guide rail, comprising a slide rail and a slide block according to any one of claims 1 to 9, wherein the slide block is movably disposed on the slide rail.