Abrading – Machine – Reciprocating tool
Reexamination Certificate
2000-08-14
2002-10-29
Eley, Timothy V. (Department: 3724)
Abrading
Machine
Reciprocating tool
C451S304000, C451S361000
Reexamination Certificate
active
06471568
ABSTRACT:
BACKGROUND OF THE INVENTION
(a) Technical Field of the Invention
The present invention relates to the technology field of sanding machine, and in particular, an eccentric-swinging device mounted onto a shaft rod of a roller of a sanding module.
(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 an eccentric-swinging device for a sanding machine, wherein a driven roller is mounted with an eccentric-swinging device which has the function of swinging, and the eccentric-swinging device comprises a floating frame, a transmission structure, and a flat plate mounted onto the machine body of the device, and the center section of the floating frame is mounted with a shaft seat, and the bottom surface within a support frame is mounted with corresponding bearings such that the shaft seat holds the bearings forming into a rotating support for the floating frame, and in between the floating frame and the flat plate, a spring which can be pulled downward is mounted, and the transmission structure is mounted to the floating frame, corresponding to one lateral side of the flat plate, the transmission structure is synchronously driven by the shaft rod of the driven roller, and the flat plate is mounted with a rotatable shaft center, wherein a free end of the shaft center forms into an eccentric post, and a bearing urging the top face of the flat plate is mounted onto the eccentric post, thereby the sanding belt produces a reciprocating sanding movement.
Yet another object of the present invention is to provide an eccentric-swinging device for a sanding machine, wherein the sanding effect to the polishing material is of high quality.
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: 3416261 (1968-12-01), Sherman et al.
patent: 4939870 (1990-07-01), Wang
patent: 5512009 (1996-04-01), Earl
patent: 6283841 (2001-09-01), Wang
patent: 6299512 (2001-10-01), Costa et al.
Eley Timothy V.
Lei Leong C.
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