TWI870891B - Linear guide rail with dust-proof structure - Google Patents

Abstract

A linear guide rail with a dust-proof structure is disclosed. A slider is movably disposed on a slide rail. An end cap is combined on the slider. A dust cover covers the end cap and forms an installation space and a dust removal orifice. A dust removal plate set is disposed in the installation space and includes an outer dust removal plate and an inner dust removal plate that are covered with each other. The outer dust removal plate and the inner dust removal plate together form a dust removal channel and a slot. The dust removal channel includes an inner port connected to the slot and an outer port connected to the dust removal orifice. A wiper plate is arranged in the installation space and abuts against the outer dust removal plate, and at least a part of the wiper plate protrudes out of the dust cover to contact the slide rail. Therefore, the linear guide rail with a dust-proof structure is provided to reduce dust accumulation to avoid of replacement or maintenance.

Description

Linear slide with dust-proof structure

The present invention relates to a linear slide rail, and in particular to a linear slide rail with a dustproof structure.

Linear slides are usually used in mechanical equipment, mainly to install the slider on the track for linear repetitive movement. However, due to the influence of the external environment, such as dust and debris, linear slides often fail and wear, and even affect the operating performance and life of the mechanical equipment. Therefore, the design of dust-proof structure is very important to improve the life and stability of linear slides.

At present, there are roughly two ways to set up the dustproof structure of the linear slide. One is to install a dust cover on the outside of the slide, and the other is to install a scraper on the slider. However, the dust cover usually needs to be maintained and replaced, otherwise a large amount of dust and debris may accumulate in the cover, thereby affecting the operation of the linear slide; in addition, the dust cover may also increase the load and resistance of the slide, thereby reducing the operating efficiency of the equipment. Furthermore, the scraper cannot completely prevent dust and debris from entering the linear slide, and the scraper is also easy to wear and need to be replaced, so there is still a risk of affecting the movement trajectory and speed of the slider.

In view of this, the inventor has conducted intensive research on the above-mentioned existing technologies and applied theories to try his best to solve the above-mentioned problems, which has become the goal of the inventor's improvement.

One of the purposes of the present invention is to provide a linear slide rail with a dustproof structure to reduce the accumulation of dust and debris and avoid frequent replacement or maintenance procedures.

In order to achieve the above-mentioned purpose, the present invention is a linear slide rail with a dust-proof structure, including a slide rail, a slider, an end cover, a dust-proof cover, a dust-removing sheet set and a scraping brush sheet. The slider is movably arranged on the slide rail. The end cover is coupled to an end surface of the slider. The dust-proof cover covers an outer side surface of the end cover. The dust-proof cover is formed with an installation space and a dust-removing port connected to the installation space. The dust-removing sheet set is arranged in the installation space. The dust-removing sheet set includes an outer dust-removing sheet and an inner dust-removing sheet that cover each other. The outer dust-removing sheet and the inner dust-removing sheet together form a dust-removing channel and a slot that can penetrate the slide rail. The dust removal channel includes an inner opening connected to the slot and an outer opening connected to the dust removal port. The scraper blade is arranged in the installation space and abuts against the outer dust removal blade. At least a portion of the scraper blade protrudes out of the dust cover and contacts the slide rail.

Compared with the prior art, the linear slide rail of the present invention has an end cover disposed on one side of the slide block, and a dust removal sheet set and a scraper sheet installed in the dust cover, thereby forming a linear slide rail with a dust-proof structure; in addition, the dust removal sheet set of the present invention is provided with a dust removal channel, and external liquid can enter the dust removal channel to flush the slide rail and remove foreign objects such as fine powder or dust that fall on the slide rail, or foreign objects such as fine powder or dust that fall on the slide rail can be extracted by air extraction, thereby reducing the accumulation of dust and debris, and can avoid frequent replacement or maintenance procedures, thereby increasing the practicality of the present invention.

The detailed description and technical contents of the present invention are described below with accompanying drawings. However, the attached drawings are only for reference and explanation and are not used to limit the present invention.

Please refer to Figures 1 to 3, which are three-dimensional schematic diagrams of the linear slide of the present invention and three-dimensional schematic diagrams of the two sides after the slide is removed. The present invention is a linear slide 1 with a dustproof structure, including a slide 10, a slide block 20, an end cover 30, a dustproof cover 50, a dust removal sheet set 60 and a scraper sheet 70. The end cover 30 is arranged on one side of the slide block 20. The dust removal sheet set 60 and the scraper sheet 70 are installed in the dustproof cover 50, thereby forming a linear slide 1 with a dustproof structure.

It should be noted that this embodiment only describes the dustproof structure provided on one side of the slider 20. The same dustproof structure is provided on the other side of the slider 20, which will not be described in detail here.

Please refer to Figures 4 to 6, which are three-dimensional exploded schematic diagrams of the dustproof structure of the linear slide rail of the present invention in two directions, and partial cross-sectional enlarged schematic diagrams of the linear slide rail with dustproof structure of the present invention. In this embodiment, the slider 20 is a U-shaped block, and a bead groove 21 is provided on the bottom side of the slider 20 corresponding to the shape of the slide rail 10. In addition, the slider 20 is movably arranged on the slide rail 10 through the bead groove 21.

The end cap 30 is coupled to one end surface of the slider 20. In actual use, oil such as lubricating oil or grease is injected into the interior of the end cap 30 to lubricate the slide rail 10 and the slider 20.

The dust cover 50 is a shell made of high-strength engineering plastics such as ABS, PA, POM, PBT, PET, etc. The dust cover 50 covers an outer side surface of the end cover 30. The dust cover 50 is formed with an installation space 51 and a dust removal port 52 connected to the installation space 51.

The dust removal sheet set 60 is composed of two sheets made of oil-resistant and wear-resistant elastic bodies such as NBR, HNBR, and FKM, including an outer dust removal sheet 61 and an inner dust removal sheet 62 that cover each other. The dust removal sheet set 60 is set in the installation space 51 of the dust cover 50, and contacts the slide rail 10 in a manner of interfering with 0.06mm to remove foreign objects such as dust that fall on the slide rail 10. In addition, the internal structure of the dust removal sheet set 60 will be described in detail later.

Furthermore, the scraper sheet 70 is a flexible sheet made of modified low friction coefficient and wear-resistant engineering plastics such as PE, HDPE, UPE, etc. The scraper sheet 70 is arranged in the installation space 51 of the dust cover 50 and abuts against the external dust removal sheet 61. At least a portion of the scraper sheet 70 protrudes from the dust cover 50 and contacts the slide rail 10 in a completely attached manner (without interference) to scrape off dust and other foreign objects that fall on the slide rail 10.

In one embodiment of the present invention, the linear slide rail 1 with a dustproof structure further includes an oil scraper 40. The oil scraper 40 is combined with one side of the end cover 30. In addition, the dust removal blade set 60 and the scraper blade 70 are combined with an outer side of the oil scraper 40. In addition, the oil scraper 40 is a piece made of an oil-resistant and wear-resistant elastic body such as NBR, HNBR, FKM, etc. The oil scraper 40 covers an outer side surface of the end cover 30 away from the slider 20 and contacts the slide rail 10 in a manner of interfering 0.06mm to scrape off overflow or excess lubricating oil.

In one embodiment of the present invention, the linear slide rail 1 with a dustproof structure further includes a sealing sheet 80. The sealing sheet 80 can be made of an oil-resistant and wear-resistant elastic body such as NBR, HNBR, FKM, etc. It is arranged between the dust removal sheet set 60 and the oil scraper sheet 40 to enhance the sealing between the dust removal sheet set 60 and the oil scraper sheet 40 and prevent liquid or fine powder from entering the oil scraper sheet 40.

Specifically, the dust cover 50 of the present invention is formed with a pair of first convex pieces 511 and a pair of second convex pieces 512 in the installation space 51. The scraper sheet 70 is attached to the inner wall surface of the dust cover 50, and is positioned in the installation space 51 by abutting against the pair of first convex pieces 511 through the first concave arc surface 71. In addition, the dust removal sheet set 60 is attached to the inner wall surface of the dust cover 50, and is positioned in the installation space 51 by abutting against the pair of second convex pieces 512 through the second concave arc surface 600. Preferably, the pair of first convex pieces 511 and the pair of second convex pieces 512 are respectively arranged in a step-like manner to facilitate more accurate positioning of the scraper sheet 70 and the dust removal sheet set 60.

Please continue to refer to Figures 7 and 8, which are three-dimensional exploded schematic diagrams of the dust removal sheet set of the present invention and schematic diagrams of its use. The dust removal sheet set 60 of the present invention is composed of an outer dust removal sheet 61 and an inner dust removal sheet 62 that cover each other. The outer dust removal sheet 61 and the inner dust removal sheet 62 together form a dust removal channel 63 and a slot 64 that can penetrate the slide rail 10. The dust removal channel 63 includes an inner opening 631 connected to the slot 64 and an outer opening 632 connected to the dust removal port 52 of the dust cover 50. In addition, the dust removal channel 63 includes an inner channel 633 extending from the inner opening 631 and an outer channel 634 extending from the outer opening 632.

In more detail, the dust removal channel 63 includes a plurality of inner openings 631 and a plurality of outer openings 632. The inner openings 631 are arranged at intervals on one side of the slot 64. The outer openings 632 are symmetrically arranged on the opposite side of the dust removal sheet set 60. In addition, the dust cover 50 is provided with a plurality of dust removal openings 52 corresponding to the outer openings 632. The dust removal openings 52 are located on the opposite side of the dust cover 50.

Specifically, the dust removal channel 63 includes a pair of inner channels 633, a pair of outer channels 634, and a connecting channel 635 connecting the pair of outer channels 634. In this embodiment, each inner channel 633 is arranged in a U shape. In other words, the pair of inner channels 633, the connecting channel 635, and the pair of outer channels 634 are connected to each other and together form the dust removal channel 63.

In this embodiment, the dust removal channel 63, the inner opening 631 and the outer opening 632 are respectively formed by a first half structure 601 and a second half structure 602 on which the outer dust removal sheet 61 and the inner dust removal sheet 62 are respectively disposed. In actual implementation, the dust removal channel 63, the inner opening 631 and the outer opening 632 and other structures can also be disposed on only one of the dust removal sheets, and then the other dust removal sheet is covered to form the dust removal channel 63.

Accordingly, external fluid (such as gas, lubricating oil, oil gas or cutting fluid, etc.) can flow into the installation space 51 from the dust removal ports 52 on both sides of the dust cover 50, and further enter the dust removal channel 63 from the external ports 632, and finally flow into the slot 64 from the internal ports 631, so as to flush the slide 10 arranged in the slot 64, so as to remove foreign objects such as fine powder or dust falling on the slide 10, especially for the linear slide set in the working environment where fine powder below 10um exists. It is worth noting that the linear slide 1 can perform the above-mentioned dust removal action during operation to achieve energy saving effect, but it is not limited to this.

It should also be noted that the linear slide rail 1 with dust-proof structure of the present invention can also perform dust removal on the dust removal channel 63 by means of air extraction. In actual use, an external air extractor can be extended from the dust removal ports 52 on both sides of the dust-proof cover 50 into the installation space 51 to further perform air extraction on the dust removal channel 63, the slot 64 and the slide rail 10 disposed in the slot 64, so as to extract foreign objects such as fine powder or dust that fall on the slide rail 10.

Please refer to Figure 9 again, which is another three-dimensional exploded schematic diagram of the linear slide of the present invention. The difference between this embodiment and the previous embodiment is that the linear slide 1 further includes a self-lubricating element set 90. The self-lubricating element set 90 includes a lubricating cover 91 and a lubricating sheet 92 disposed in the lubricating cover 91. In addition, the self-lubricating element set 90 is disposed between the end cover 30 and the oil scraper 40 to provide continuous lubrication for the slide 10.

The above is only a preferred embodiment of the present invention and is not intended to define the patent scope of the present invention. Other equivalent variations that apply the patent spirit of the present invention should all fall within the patent scope of the present invention.

1: Linear slide rail

10: Slide rail

20: Slider

21: Bead groove

30: End cover

40: Oil scraper

50: Dust cover

51: Installation space

511: First convex piece

512: Second protrusion

52: Dust removal port

60: Dust removal sheet set

600: Second concave arc surface

601: The first half of the structure

602: Second half structure

61: External dust removal tablets

62: Internal dust removal sheet

63: Dust removal channel

631: Internal port

632: External port

633: Inner Passage

634: External channel

635: Connecting Channels

64: Slotting

70: Scraping brush

71: First concave arc surface

80: Sealing sheet

90: Self-lubricating component set

91: Lubricating cover

92: Lubricating sheet

Figure 1 is a three-dimensional schematic diagram of the linear slide rail of the present invention.

Figures 2 and 3 show the three-dimensional appearance of the linear slide rail of the present invention from two sides after the slide rail is removed.

Figures 4 and 5 are three-dimensional explosion diagrams of the dust-proof structure of the linear slide rail of the present invention from two sides.

Figure 6 is a partial cross-sectional enlarged schematic diagram of the linear slide rail with dust-proof structure of the present invention.

Figure 7 is a three-dimensional exploded schematic diagram of the dust removal sheet set of the present invention.

Figure 8 is a schematic diagram of the use of the dust removal sheet set of the present invention.

Figure 9 is another three-dimensional exploded schematic diagram of the linear slide rail of the present invention.

20: Sliding block 30: End cover 40: Oil scraper 50: Dust cover 60: Dust removal sheet set 70: Scraper 80: Sealing sheet

Claims (7)

A linear slide with a dustproof structure comprises: a slide; a slider movably arranged on the slide; an end cover coupled to an end surface of the slider; a dustproof cover covering an outer side surface of the end cover, the dustproof cover is formed with an installation space and a dust removal port connected to the installation space; a dust removal sheet set is arranged in the installation space, the dust removal sheet set comprises an outer dust removal sheet and an inner dust removal sheet which cover each other, the outer dust removal sheet and the inner dust removal sheet jointly form a dust removal channel and a slot which can penetrate the slide, the dust removal channel comprises an inner opening connected to the slot and an outer opening connected to the dust removal port; and a scraper A brush sheet is arranged in the installation space and abuts against the outer dust removal sheet, at least a portion of the scraping brush sheet protrudes from the dust cover and contacts the slide rail; wherein the dust removal channel includes an inner channel extending from the inner opening and an outer channel extending from the outer opening, the dust removal channel includes a plurality of inner openings and a plurality of outer openings, the inner openings are arranged at intervals on one side of the slot, and the outer openings are symmetrically arranged on the opposite side of the dust removal sheet set; and the dust cover is provided with a plurality of dust removal ports corresponding to the outer openings, and the dust removal channel includes a pair of inner channels, a pair of outer channels and a connecting channel connecting the pair of outer channels, and each inner channel is arranged in a U shape. The linear slide rail with dust-proof structure as described in claim 1 further includes a sealing sheet and an oil scraper sheet, the oil scraper sheet covers an outer side surface of the end cover away from the slide block, and the sealing sheet is arranged between the dust removal sheet set and the oil scraper sheet. The linear slide rail with dustproof structure as described in claim 1, wherein the dustproof cover is formed with a pair of first protrusions in the installation space, and the scraper is attached to the inner wall surface of the dustproof cover and abuts against the pair of first protrusions to be positioned in the installation space. The linear slide rail with dust-proof structure as described in claim 3, wherein the dust-proof cover is formed with a pair of second protrusions in the installation space, and the dust removal sheet set is attached to the inner wall surface of the dust-proof cover and abuts against the pair of second protrusions to be positioned in the installation space. The linear slide rail with dustproof structure as described in claim 4, wherein the pair of first protrusions and the pair of second protrusions are arranged in a step-like manner corresponding to each other. The linear slide rail with dustproof structure as described in claim 2 further includes a self-lubricating element set disposed between the end cover and the oil scraper, the self-lubricating element set including a lubricating cover and a lubricating sheet disposed in the lubricating cover. The linear slide rail with dust-proof structure as described in claim 1, wherein the dust removal channel, the inner opening and the outer opening are respectively composed of a first half structure and a second half structure in which the outer dust removal sheet and the inner dust removal sheet are respectively arranged.

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