Abrading – Machine – Endless band tool
Reexamination Certificate
2000-08-14
2002-10-22
Nguyen, George (Department: 3723)
Abrading
Machine
Endless band tool
C451S139000, C451S174000, C451S236000
Reexamination Certificate
active
06468140
ABSTRACT:
BACKGROUND OF THE INVENTION
(a) Technical Field of the Invention
The present invention relates to technology of sanding device, and in particular, to a swinging device mounting on the driving roller of the sanding module of the sanding device.
(b) Description of the Prior Art
Sanding machine is a device used in sanding the surface of wood material. Referring to
FIG. 1
, there is shown a conventional sanding machine having a machine body
10
mounted with a working platform
15
on the top thereof. One side of the platform
15
is provided with a sanding module
20
for the sanding of the surface of wood material. The sanding module
20
comprises a support frame
21
with two ends respectively mounted with a driving roller
22
and a driven roller
23
. The driving roller
22
is connected to a motor
24
to drive a sanding belt
25
mounted around the driving roller
22
and the driven roller
23
. The rotation of the sanding belt
25
polishes the material located on the working platform
15
.
However, the sanding belt
25
of this conventional sanding machine provides a linear rotation, i.e., the position A on the sanding belt
25
moves horizontally to the point A. Thus, the material thereon is polished in a linear manner. As the particles of the sanding belt
25
contain very tiny gaps, the entire surface of the material cannot be polished. In other words, capillary holes on the surface of the material cannot be effectively removed. Additionally, the size of the material and the exertion force of the sanding belt
25
on the material are not always constant, and the exhaustion of particles of the sanding belt
25
is not uniform. Thus, the surface of the sanding belt
25
is irregular and the polished surface of the material will have similar irregularities, and the quality of the entire surface of the polished material is reduced. Therefore, it is an object of the present invention to provide a swinging device for a sanding machine, which can mitigate the drawbacks of the conventional sanding machine.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention is to provide a swinging device for a sanding device, wherein the swinging device has a swinging element, having mounted with a bi-axle motor, mounted to the sanding module, and the bi-axle motor synchronously drives a driving structure mounted to the swinging element, and the driving structure is provided with a shaft rod having an eccentric post, and the eccentric post is mounted to a limiting rod of the sanding module for limiting purpose. Thus, when the bi-axle motor is initiated, the shaft rod is synchronously driven, and the eccentric post is used for limiting purpose. The entire swinging device causes the sanding module to produce a reciprocating swinging, and the sanding belt produces a tangential sanding effect.
Yet another object of the present invention is to provide swinging device for a sanding machine, wherein the drawbacks of rough and uneven surface of the material are overcome, and the quality of sanding effect is improved.
Other objects and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawing.
REFERENCES:
patent: 1212214 (1917-01-01), Halterbeck
patent: 4267671 (1981-05-01), Rettew
patent: 4742650 (1988-05-01), Sauder et al.
patent: 5224300 (1993-07-01), Pineau
patent: 5512009 (1996-04-01), Earl
patent: 5702287 (1997-12-01), Haney
patent: 6102787 (2000-08-01), Schroeder et al.
patent: 6299512 (2001-10-01), Costa et al.
Lei Leong C.
Nguyen George
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