Linear sliding rail with dustproof structure

Abstract

The invention provides a linear sliding rail with a dustproof structure. The sliding block is movably arranged on the sliding rail. The end cover is combined with the sliding block. The dustproof cover covers the end cover and is provided with an installation space and a dust removal opening. The dust removal piece set is arranged in the installation space and comprises an outer dust removal piece and an inner dust removal piece which are covered with each other, and the outer dust removal piece and the inner dust removal piece jointly form a dust removal channel and an open groove. The dust removal channel comprises an inner through opening communicated with the open groove and an outer through opening communicated with the dust removal opening. The scraping and brushing sheet is arranged in the mounting space and clings to the outer dust removal sheet, and at least part of the scraping and brushing sheet protrudes out of the dust cover and contacts with the slide rail. Accordingly, the linear sliding rail with the dustproof structure is provided, dust accumulation is reduced, and the procedure of frequent replacement or maintenance is omitted.

Description

Technical Field

[0001] The invention relates to a linear slide rail, in particular to a linear slide rail with a dustproof structure. Background Art

[0002] Linear guide rails are commonly used in mechanical equipment, mainly to install the slider on the track for linear repetitive motion. However, due to the influence of the external environment, such as dust and debris, linear guide rails often fail and wear, which in turn affects the operating efficiency and life of the mechanical equipment. Therefore, the design of dust-proof structure is very important to improve the life and stability of linear guide rails.

[0003] Furthermore, there are roughly two ways to set up the dustproof structure of the linear slide rail. One is to install a dust cover on the outside of the slide rail, 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, which will affect the operation of the linear slide rail; in addition, the dust cover may also increase the load and resistance of the slide rail, thereby reducing the operating efficiency of the equipment. Furthermore, the scraper cannot completely prevent dust and debris from entering the linear slide rail, 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.

[0004] In view of this, the inventor has devoted himself to studying the above-mentioned prior art and has applied theoretical knowledge to try his best to solve the above-mentioned problems, which has become the goal of the inventor's improvement. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a linear slide rail with a dustproof structure, which overcomes the defects of accumulation of dust and debris and frequent replacement or maintenance procedures.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a linear slide rail with a dustproof structure, including a slide rail, a slider, an end cover, a dust cover, a dust removal sheet group and a scraper sheet. The slider is movably arranged on the slide rail. The end cover is combined with an end surface of the slider. The dust cover covers an outer side surface of the end cover. The dust cover is formed with an installation space and a dust removal port connected to the installation space. The dust removal sheet group is arranged in the installation space. The dust removal sheet group includes an outer dust removal sheet and an inner dust removal sheet that cover each other. The outer dust removal sheet and the inner dust removal sheet together form a dust removal channel and a groove that can pass through the slide rail. The dust removal channel includes an inner opening connected to the groove and an outer opening connected to the dust removal port. The scraper sheet is arranged in the installation space and abuts against the outer dust removal sheet. At least a portion of the scraper sheet protrudes out of the dust cover and contacts the slide rail.

[0007] It can be seen from the above scheme that the beneficial effects of the present invention are: the linear slide rail of the present invention sets the end cover on one side of the slider, and installs the dust removal sheet group and the scraper sheet in the dust cover, thereby forming a linear slide rail with a dust-proof structure; in addition, the dust removal sheet group of the present invention is provided with a dust removal channel, and external liquid can enter the dust removal channel, thereby flushing the slide rail to remove foreign objects such as fine powder or dust that have fallen on the slide rail, or foreign objects such as fine powder or dust that have fallen on the slide rail can be extracted by suction, thereby reducing the accumulation of dust and debris, and can avoid frequent replacement or maintenance procedures, thereby increasing the practicality of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a three-dimensional schematic diagram of the linear slide rail of the present invention;

[0009] Figure 2 and Figure 3 It is a schematic diagram of the three-dimensional appearance of the linear slide rail of the present invention in two side directions after the slide rail is removed;

[0010] Figure 4 and Figure 5 It is a three-dimensional exploded schematic diagram of the dustproof structure of the linear slide rail of the present invention from two sides;

[0011] Figure 6 It is a partial cross-sectional enlarged schematic diagram of the linear slide rail with a dustproof structure of the present invention;

[0012] Figure 7 It is a three-dimensional exploded schematic diagram of the dust removal sheet group of the present invention;

[0013] Figure 8 It is a schematic diagram of the use of the dust removal sheet group of the present invention;

[0014] Fig. 9 is another exploded perspective view of the linear guide rail of the present invention;

[0015] Wherein: Reference numerals

[0016] 1-Linear slide;

[0017] 10- slide rail;

[0018] 20- Slider;

[0019] 21-bead groove;

[0020] 30-end cover;

[0021] 40- oil scraper;

[0022] 50-dust cover;

[0023] 51- Installation space;

[0024] 511- first protrusion;

[0025] 512 - second protrusion;

[0026] 52-dust removal port;

[0027] 60-dust removal piece set;

[0028] 600- second concave arc surface;

[0029] 601-first half structure;

[0030] 602-second half structure;

[0031] 61- external dust removal sheet;

[0032] 62-internal dust removal sheet;

[0033] 63-dust removal channel;

[0034] 631-Inner port;

[0035] 632-external port;

[0036] 633-Inner Passage;

[0037] 634-External channel;

[0038] 635-Link channel;

[0039] 64- slotted;

[0040] 70-scraping brush;

[0041] 71- first concave arc surface;

[0042] 80-sealing sheet;

[0043] 90-Self-lubricating component group;

[0044] 91-lubrication cover;

[0045] 92-Lubricating sheet. DETAILED DESCRIPTION

[0046] The detailed description and technical contents of the present invention are described as follows with reference to the accompanying drawings. However, the accompanying drawings are only provided for reference and explanation and are not intended to limit the present invention.

[0047] Please refer to Figures 1 to 3, respectively, are a three-dimensional appearance schematic diagram of the linear slide rail of the present invention and a three-dimensional appearance schematic diagram of the two sides after the slide rail is removed. The present invention is a linear slide rail 1 with a dustproof structure, comprising a slide rail 10, a slider 20, an end cover 30, a dust cover 50, a dust removal sheet set 60 and a scraper sheet 70. The end cover 30 is arranged on a side of the slider 20. The dust removal sheet set 60 and the scraper sheet 70 are installed in the dust cover 50, thereby forming a linear slide rail 1 with a dustproof structure.

[0048] It should be noted that this embodiment is described only with reference to the dustproof structure disposed on one side of the slider 2. The other side of the slider 2 is provided with the same dustproof structure, which will not be described in detail.

[0049] 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 from two sides, and a partial cross-sectional enlarged schematic diagram of the linear slide rail with a 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 outer shape of the slide rail 10. In addition, the slider 20 is movably provided on the slide rail 10 through the bead groove 21.

[0050] The end cap 30 is coupled to an end surface of the slider 20 . In actual use, oil such as lubricating oil or butter is injected into the end cap 30 to lubricate the slide rail 10 and the slider 20 .

[0051] 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 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.

[0052] The dust removal sheet set 60 is composed of two sheets made of oil-resistant and wear-resistant elastic body such as NBR, HNBR, FKM, etc., 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 arranged in the installation space 51 of the dust cover 50, and contacts the slide rail 10 in a manner of interfering with the slide rail 10 by 0.06mm, so as to remove foreign objects such as dust that fall on the slide rail 10. The internal structure of the dust removal sheet set 60 will be described in detail later.

[0053] Furthermore, the scraper sheet 70 is a flexible sheet made of modified engineering plastics with low friction coefficient and wear resistance 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 outer dust removal sheet 61. At least a portion of the scraper sheet 70 protrudes out of the dust cover 50 and contacts the slide rail 10 in a completely attached manner (without interference) to scrape off foreign objects such as dust that fall on the slide rail 10.

[0054] In one embodiment of the present invention, the linear guide rail 1 with 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 sheet set 60 and the scraper 70 are combined with an outer side of the oil scraper 40. Moreover, the oil scraper 40 is a sheet 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 guide rail 10 in a manner of interfering with 0.06mm to scrape off overflow or excess lubricating oil.

[0055] In one embodiment of the present invention, the linear guide 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 elastomer such as NBR, HNBR, FKM, etc., and is disposed 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.

[0056] 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 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 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 stepped shape, so as to facilitate more accurate positioning of the scraper sheet 70 and the dust removal sheet set 60.

[0057] Please continue to refer to Figure 7 and Figure 8 , is a three-dimensional exploded schematic diagram of the dust removal sheet set of the present invention and a schematic diagram 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.

[0058] In more detail, the dust removal passage 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.

[0059] 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 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 outer channel 634 are connected and together form the dust removal channel 63.

[0060] In this embodiment, the dust removal passage 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 corresponding to the outer dust removal sheet 61 and the inner dust removal sheet 62. In actual implementation, the dust removal passage 63, the inner opening 631 and the outer opening 632 can also be formed on only one of the dust removal sheets, and then the other dust removal sheet is covered to form the dust removal passage 63.

[0061] 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 these external ports 632, and finally flow into the slot 64 from these internal ports 631, so as to flush the slide rail 10 set in the slot 64 and remove foreign objects such as fine powder or dust falling on the slide rail 10, especially for dust removal of linear slide rails in an operating environment where fine powder below 10um exists. It is worth noting that the linear slide rail 1 can perform the above-mentioned dust removal action during operation to achieve energy saving effect, but it is not limited to this.

[0062] It should also be noted that the linear guide rail 1 with a dustproof structure of the present invention can also remove dust from 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 cover 50 into the installation space 51 to further perform air extraction on the dust removal channel 63, the slot 64 and the guide rail 10 disposed in the slot 64, and extract foreign objects such as fine powder or dust that fall on the guide rail 10.

[0063] Please refer to Fig. 9 , is another exploded perspective view of the linear guide rail of the present invention. The difference between this embodiment and the previous embodiment is that the linear guide rail 1 further includes a self-lubricating element set 90. The self-lubricating element set 90 includes a lubrication cover 91 and a lubrication sheet 92 disposed in the lubrication cover 91. In addition, the self-lubricating element set 90 is disposed between the end cover 30 and the oil scraper sheet 40 to provide continuous lubrication to the guide rail 10.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the patent scope of the present invention. Other equivalent changes that apply the patent spirit of the present invention should all fall within the patent scope of the present invention.

Claims

1. A linear guide rail with a dustproof structure, characterized in that: include: A slide rail; A slider, movably disposed on the slide rail; an end cover coupled to an end surface of the slider; A dust cover, covering an outer side surface of the end cover, the dust cover is formed with an installation space and a dust removal port connected to the installation space; a dust removal sheet set, arranged in the installation space, the dust removal sheet set comprising an outer dust removal sheet and an inner dust removal sheet covering each other, the outer dust removal sheet and the inner dust removal sheet jointly forming a dust removal channel and a slot capable of passing through the slide rail, the dust removal channel comprising an inner opening connected to the slot and an outer opening connected to the dust removal port; and A scraper blade is arranged in the installation space and abuts against the outer dust removal blade, and at least a portion of the scraper blade protrudes out of the dust cover and contacts the slide rail.

2. The linear guide rail with dustproof structure according to claim 1, characterized in that: It further comprises a sealing sheet and an oil scraping sheet. The oil scraping sheet covers an outer side surface of the end cover away from the sliding block. The sealing sheet is arranged between the dust removal sheet set and the oil scraping sheet.

3. The linear guide rail with dustproof structure according to claim 1, characterized in that: The dust cover is formed with a pair of first protruding pieces in the installation space, and the scraping piece is attached to the inner wall surface of the dust cover and abuts against the pair of first protruding pieces to be positioned in the installation space.

4. The linear guide rail with dustproof structure according to claim 3, characterized in that: The dust cover is formed with a pair of second protruding pieces in the installation space, and the dust removal piece set is attached to the inner wall surface of the dust cover and abuts against the pair of second protruding pieces to be positioned in the installation space.

5. The linear guide rail with dustproof structure according to claim 4, characterized in that: The pair of first protruding pieces and the pair of second protruding pieces are respectively arranged in a step shape.

6. The linear guide rail with dustproof structure according to claim 1, characterized in that: The dust removal passage includes an inner passage extending from the inner opening and an outer passage extending from the outer opening.

7. The linear guide rail with dustproof structure according to claim 6, characterized in that: The dust removal channel includes a plurality of inner openings and a plurality of outer openings, wherein the inner openings are spaced apart on one side of the slot, and the outer openings are symmetrically arranged on the opposite side of the dust removal sheet group; and the dust cover is provided with a plurality of dust removal openings corresponding to the outer openings.

8. The linear guide rail with dustproof structure according to claim 7, characterized in that: The dust removal channel comprises a pair of inner channels, a pair of outer channels and a connecting channel connecting the outer channels, and each inner channel is arranged in a U shape.

9. The linear guide rail with dustproof structure according to claim 2, characterized in that: It further comprises a self-lubricating element group arranged between the end cover and the oil scraper plate, wherein the self-lubricating element group comprises a lubricating cover and a lubricating plate arranged in the lubricating cover.

10. The linear guide rail with dustproof structure according to claim 1, characterized in that: The dust removal passage, the inner opening and the outer opening are respectively composed of a first half structure and a second half structure corresponding to the outer dust removal piece and the inner dust removal piece.

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