CN100413662C - Air Knife Linear Slides - Google Patents

Abstract

The invention relates to an air knife type linear slide rail, in particular to the improvement of a dust prevention technology of the linear slide rail, wherein the dust prevention is a dust prevention mode of passively preventing sundries from entering a slide block, but is a dust removal mode of actively removing the sundries. The invention improves the dust-proof mode of the linear slide rail into the dust-removing mode, greatly improves the dust-proof effect of the linear slide rail, prolongs the service life of the linear slide rail, and can be applied to the working environment with serious pollution because the periphery of the sliding block combination has the air-spraying dust-removing effect, so that the application range of the linear slide rail is wider, and the competitiveness of the product is greatly improved.

Description

Air Knife Linear Slides

technical field

The invention relates to an air-knife linear slide rail, in particular to the improvement of the dust-proof technology of a linear slide rail, which becomes a linear slide rail that can actively remove sundries and is especially suitable for woodworking machinery, stone materials, etc. Linear slides in high dust environments such as cutting and textile industries.

Background technique

The traditional linear slide rail is shown in Figure 7, which includes a slide rail 10, a slider 20, an end cover 30, a cover body 7b, a rolling element 5b and an oil scraper 40, and the end cover 30 and the cover body 7b are connected by screws 6b. and the oil wiper 40 is locked on the slider 20, there are bead grooves on both the slide rail 10 and the slider 20, and the rolling element 5b is placed between the bead groove of the slider 20 and the bead groove of the slide rail 10 for circular rolling, so that the slider The frictional resistance generated when the block 20 moves relatively on the slide rail 10 is relatively small. There is an end cover 30 on both sides of the slider 20 to turn the rolling body 5b. When the slider 20 moves on the slide rail 10, the rolling body 5b enters through the end cover 30 between the slider 20 and the bead groove of the slide rail 10. The return hole (not marked) of the slider 20 enters the end cover 30 at the other end through the return hole and returns to the bead groove of the slider 20 and the slide rail 10, so that the rolling body 5b can perform infinite circular motion. Since the circulation path of the rolling element 5b will be polluted or damaged due to the entry of impurities, an oil scraper 40 is arranged on the slider 2

0 The outer sides of the end covers 30 on both sides prevent the debris on the slide rail 10 from entering the circulation path of the rolling elements 5b of the slide rail 10 and the slider 20, so as to achieve the effect of dust prevention.

At present, linear slide rails have been widely used in precision machinery and general industrial machinery, so the requirements for dust-proof linear slide rails are getting higher and higher. However, the current anti-dust technology of linear slide rails is still at the stage of preventing debris from entering the interior of the slider, that is, oil scrapers are used to prevent debris on the surface of the slide rail from entering the interior of the slider. The dust-proof efficiency of this method depends entirely on the tightness of the oil scraper and the outline of the slide rail. If the oil scraper and the slide rail are too tightly fitted, it may affect the preload of the linear slide rail, and the oil scraper may be damaged due to rapid Wear and tear will soon lose the function of preventing debris from entering the slider; on the other hand, if the oil scraper and the slide rail are not tightly fitted, it can only block the larger debris on the surface of the slide rail, making the larger The debris does not enter the inside of the slider, but it does not have a dust-proof effect for smaller impurities or even dust, so the impurities and dust still enter the inside of the slider to pollute or even destroy the circulation path of the rolling elements, and reduce the linear slideway. Therefore, the application range of linear slide rails is greatly limited.

To sum up, it is necessary to improve the above-mentioned known technologies.

Contents of the invention

The purpose of the present invention is to provide an air-knife linear slide rail, which improves the dust-proof technology of the linear slide rail from the dust-proof method to the dust-removal method, so that the applicable range of the linear slide rail is wider and the linear slide rail can be extended. The service life of the slide rail and enhance the competitiveness of the linear slide rail.

An air-knife linear slide rail according to the present invention is characterized in that it at least includes:

a slide rail, which is a strip of limited length, and the two sides of the slide rail have strip-shaped bead grooves parallel to the slide rail;

A sliding block assembly, which cooperates with the aforementioned slide rail and slides on the sliding rail, and has a bead groove matching with the aforementioned slide rail bead groove, and is provided with a return system for rolling elements; the sliding block assembly includes a sliding block block, two end covers, two oil scrapers, two air guide blocks and two cover plates, wherein there are two fixing holes on both sides of the air guide block, so that the air guide block and the cover plate are tightly combined; and the air guide block There is an air inlet on each side of the air inlet;

Most of the rolling elements are placed between the bead grooves of the aforementioned slide rail and sliding block combination;

An air chamber, which is a space, is located inside the aforementioned sliding block assembly;

Wherein the combination of the slide rail and the sliding block, the rolling element placed between them and an air chamber for guiding the air flow is to introduce air into the air chamber, so that the air flows from the inside of the sliding block assembly along the outside of the slide rail. The outline of the shape is sprayed out to achieve the effect of dust removal.

Wherein said air chamber is arranged in the closed space of the air guide block.

Wherein the cover plate is arranged on the outside of the air guide block.

The cover plate can be made of metal material.

Since linear slide rails are currently widely used in general industrial machinery and precision machinery, some problems must be overcome during application, and dust prevention is one of the main problems.

The air-knife linear slide rail of the present invention changes the dust-proof technology of the linear slide rail from a passive method of preventing impurities and dust from entering the slider body into a positive method of removing impurities and dust on the surface of the slide rail. The present invention uses the principle of air flow to introduce air into the air chamber of the sliding block combination, and uses the wind path to spray the pressure air from the inner side of the sliding block combination along the outline of the slide rail, so that the air spray can remove impurities and dust on the surface of the slide rail in advance , before the sliding block combination passes, the impurities and dust on the surface of the slide rail have been sprayed off by the airflow.

Therefore, the present invention upgrades the known dust-proof method from a lower level of preventing impurities and dust from entering the slider to actively removing impurities and dust on the surface of the slide rail, so that the surface of the slide rail through which the slider assembly passes is free of impurities and dust. At this time, there is no need to consider the problem that impurities and dust will enter the slider body, so that the rolling element circulation system inside the slider will not be polluted or damaged, so as to prolong the service life of the linear slide rail and allow the linear slide rail It is applied in a more polluted environment, which makes the application range of the linear slide rail more extensive, so the competitiveness of the linear slide rail will be greatly improved.

Description of drawings

In order to facilitate a further understanding of the features and technical content of the present invention, please refer to the following preferred embodiments of the present invention and accompanying drawings in detail. However, these embodiments and accompanying drawings are only for illustration and reference, and are not intended to make any contribution to the present invention. limit.

Please refer to the following detailed description of a preferred embodiment of the present invention and the accompanying drawings, will further understand the technical content of the present invention and its purpose effect, wherein:

The accompanying drawings about this embodiment are:

Fig. 1 is the perspective view of embodiment of air knife type linear slide rail of the present invention;

Fig. 2 is a front view of the air guide block of Fig. 1;

Figure 3 is a side view of the air guide block of Figure 2;

Fig. 4 is the A-A sectional view of Fig. 3;

Fig. 5 is the B-B sectional view of Fig. 2;

Fig. 6 is the C-C sectional view of Fig. 2;

Fig. 7 is a partial sectional view of a known linear slide.

Detailed ways

Please refer to Fig. 1, which is a perspective view of an embodiment of the air knife type linear slide of the present invention, the air knife type linear slide of the present invention comprises a slide rail 10 and a sliding block combination (not shown) and is placed between the two Between the rolling elements (not marked) and an air chamber 56 (in Fig. 2) for guiding the air flow, and the sliding block combination can be composed of a sliding block 20, two end covers 30, two oil wipers 40, two air guide blocks 50 And two cover plates 60 are combined, then the air chamber 56 for guiding the airflow is arranged in the air guide block 50 . In the embodiment of the present invention, the air is introduced into the air guide block 50, so that the air is ejected from the inner side of the air guide block 50 along the outline of the slide rail, so as to achieve the effect of dust removal.

For a more detailed description of the embodiment of the present invention, please refer to Figure 2, Figure 3 and Figure 4; Figure 2 is a front view of the air guide block of Figure 1, and Figure 3 is a side view of the air guide block of Figure 2, Figure 4 Then it is the A-A sectional view of Fig. 3; wherein the two sides of the air guide block 50 respectively have two fixing holes 52, so that the air guide block 50 and the cover plate 60 can be closely combined; 51, the air is introduced into the air chamber 56 through the airflow inlets 51 on both sides, and the introduced air is guided by the airflow guide plane 561 above and the airflow guide plane 562 on both sides to flow downward and concentrate inwardly, and Because the air guide block 50 is closely combined with the cover plate 60, the open air chamber 56 becomes a sealed air chamber 56; and FIG. 5 is a B-B sectional view of FIG. 2, and FIG. View; when the air is in the air chamber 56 of the sealed type, the air pressure in the air chamber 56 will be increased due to the influence of the airflow guide slope 563 above the air guide block 50 and the airflow guide slope 564 on both sides , so the air will quickly be ejected from the airflow ejection surfaces 53 and 54 matching the outline of the slide rail 10 out of the slide block assembly, so that impurities such as dust or chips adhering to the surface of the slide rail 10 can be released on the slide block Before the combination passes, it is sprayed out by the air sprayed out, so no impurities can enter the sliding block combination and destroy the rolling element circulation system, so as to achieve a good dust removal effect. In addition, if the aforementioned cover plate 60 closely combined with the air guide block 50 is made of metal, its rigidity will be better.

The above detailed description is a specific description of the feasible embodiment of the present invention. This embodiment is not used to limit the patent scope of the present invention. Any equivalent implementation or change that does not deviate from the technical spirit of the present invention shall be included in the scope of this case. within the scope of the patent.

Features and functions

Firstly, the air-knife linear slide rail of the present invention upgrades the dust-proof technology of the linear slide rail from the dust-proof method to the dust-removal method.

Secondly, the air-knife linear slide rail of the present invention can make the sliding block assembly move on the surface of the slide rail without impurities and dust, so the circulation system inside the sliding block assembly is not polluted or damaged, and the service life of the linear slide rail can be extended .

Furthermore, the air-knife linear slide rail of the present invention has the effect of air jet dust removal around the sliding block combination, so that the linear slide rail can be applied to a more seriously polluted working environment, and the application range of the linear slide rail is wider , and greatly enhance the competitiveness of linear slides.

Claims (4)

1. An air knife type linear slideway, is characterized in that, comprises at least: a slide rail, which is a strip of limited length, and the two sides of the slide rail have strip-shaped bead grooves parallel to the slide rail; A sliding block assembly, which cooperates with the aforementioned slide rail and slides on the sliding rail, and has a bead groove matching with the aforementioned slide rail bead groove, and is provided with a return system for rolling elements; the sliding block assembly includes a sliding block block, two end covers, two oil scrapers, two air guide blocks and two cover plates, wherein there are two fixing holes on both sides of the air guide block, so that the air guide block and the cover plate are tightly combined; and the air guide block There is an air inlet on each side of the air inlet; Most of the rolling elements are placed between the bead grooves of the aforementioned slide rail and sliding block combination; An air chamber, which is a space, is located inside the aforementioned sliding block assembly; Wherein the combination of the slide rail and the sliding block, the rolling element placed between them and an air chamber for guiding the air flow is to introduce air into the air chamber, so that the air flows from the inside of the sliding block assembly along the outside of the slide rail. The outline of the shape is sprayed out to achieve the effect of dust removal. 2. The air knife type linear slide rail according to claim 1, wherein the air chamber is arranged in the closed space of the air guide block. 3. The air knife type linear slide rail according to claim 2, wherein the cover plate is arranged on the outside of the air guide block. 4. The air knife linear slide rail according to claim 3, wherein the cover plate can be made of metal material.

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