Fluid sprinkling – spraying – and diffusing – Rigid fluid confining distributor – Having interior filter or guide
Reexamination Certificate
2002-09-06
2004-06-01
Mar, Michael (Department: 3752)
Fluid sprinkling, spraying, and diffusing
Rigid fluid confining distributor
Having interior filter or guide
C384S015000
Reexamination Certificate
active
06742729
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an air jet type linear guide way, and in particular, to a linear guide way equipped with a dust removal air jet chamber capable of excluding foreign materials such as wastes, powder dust or oil deposits remain along the guide track so that the linear guide way of the present invention is well-fitted to use in high dusty workshops such as carpentry, stone cutting, or textiles and dyeing.
2. Description of the Prior Art
FIG. 7
shows a fragmentary cross sectional view of a conventional linear guide way. It comprises a sliding track
10
, a sliding block
20
, and two end covers
30
. Each end cover
30
further contains a cover body
76
, a plurality of rollers
5
b
, and a scrapper
40
. Each end cover
30
together with its cover body
76
and scrapper
40
are tightened to both ends of the sliding block
20
by a tie bolt
6
b
. The sliding track
10
and the sliding block
20
are mounted on their respective rolling grooves. The roller
5
b
is circulating between the two grooves of the sliding block
20
and the sliding track
10
so as to minimize the frictional resistance caused by relative motion of the sliding block
20
with respect to the sliding track
10
. The end covers
30
at both ends of the sliding block
20
serve to turn direction of the moving assembly. When the sliding block
20
moves on the sliding track
10
, the roller
5
b
rolls along the rolling grooves between the sliding block
20
and the sliding track
10
and reaches a circulation hole (not shown) of the sliding block
20
via the end cover
30
, and then rolls from the circulation hole to the other side end cover
30
and returns to the rolling grooves between the sliding block
20
and the sliding track
10
thereby completing one circulation. The scrapper
40
is important for removing those foreign materials such as wastes, powder dust or oil deposits remain along the path of the sliding block
20
so as to keep the sliding track
10
always clean thereby ensuring operation of the linear guide way as smooth as possible.
Particularly, to the linear guide way employed in precision machine, demand of dust-proof effect for the linear guide way becomes more and more urgent that only scraping those foreign materials attached to the linear guide way away passively using the scrapper does not meet with the requirement of present day. The sizes and contours of the sliding track and the scrapper shall be closely matched so as to expect a desired satisfactory dust removal effect. If the matching of the two parts is too snug, powder dust can not be cleared thoroughly. But on the other hand, if the two parts are matched too tight, the scrapper will be badly abraded very soon so that its lifetime will be shortened. A relevant solution compromising between these two opposite factors shall be worked out for the sake of achieving purpose of upgrading dust removal effect the linear guide way.
In view of the foregoing situation, the inventor of the invention herein conducted intensive research based on many years of experience gained through professional engagement in the manufacturing of related products with continuous experimentation and improvement culminating in the development of the ingeniously designed air jet type linear guide way capable of fulfilling aforesaid object.
SUMMARY OF THE INVENTION
Therefore, the main object of the present invention is to provide an air jet type linear guide way which has means capable of removing the foreign materials such as wastes, powder dust or oil deposits remained along the guide track actively and thoroughly instead of only preventing those junks from infringing into the guide track, and by doing so, to make the device well-fitted to working in highly contaminated environments.
For achieving the aforementioned object, the present invention provides an air chamber in the sliding block for injecting pressurized air therefrom along the track way so as to forcibly remove those junks away before passing of the slide block assembly. Certainly, there is no fear of infringement of contaminative foreign materials into the main structure of the linear guide way assembly that causes severe damage to its performance.
REFERENCES:
patent: 4707879 (1987-11-01), Moszkowski
patent: 5494354 (1996-02-01), Tsukada
patent: 5547285 (1996-08-01), Hutzel et al.
patent: 6443619 (2002-09-01), Dutsch
patent: 6572269 (2003-06-01), Yabe et al.
patent: 6581429 (2003-06-01), Takakura et al.
patent: 6592261 (2003-07-01), Mochizuki
Bui Thach H
Hiwin Technologies Corp.
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