Patent Application
20080072729
a), 1(b) and 1(c) are schematic perspective views illustrating successive operations of a cutting apparatus according to a preferred embodiment of the present invention; and
The present invention will now be described more specifically with reference to the following embodiments. It is to be noted that the following descriptions of preferred embodiments of this invention are presented herein for purpose of illustration and description only. It is not intended to be exhaustive or to be limited to the precise form disclosed.
Hereinafter, the successive operations of a cutting apparatus according to the present invention will be illustrated in more details with reference to
Please refer to
For facilitating the first lateral plate 111 and the second lateral plate 112 to be stably stood on the cutting platform 11 during the cutting operation, the first lateral plate 111 and the second lateral plate 112 are supported by a first inclined plate 1112 and a second inclined plate 1122, respectively.
The motor 12 is mounted on the cutting platform 11 and behind the cutting member 18. The gear set 13 includes a first gear part and a second gear part. The first gear part 131 is disposed at a first surface of the second lateral plate 112 and rotatably connected to the motor 12, as is shown in
The first end 141 and the second end 142 of the rotating shaft 14 penetrate through the first lateral plate 111 and the second lateral plate 112, so that the rotating shaft 14 is rotatable between the first lateral plate 111 and the second lateral plate 112.
The cutting member 18 movable along the first guiding track 1111 and the second guiding track 1121 in the upward or downward direction. The cutting member 18 has a knife edge 181 for cutting sheet articles such as papers. In this embodiment, the knife edge 181 is made slanted and curved. It is noted that, however, those skilled in the art will readily observe that numerous modifications and alterations of the knife edge 181 may be made while retaining the teachings of the invention. For example, the knife edge 181 having a wavy or saw-toothed structure is feasible for implementing the cutting operation.
In accordance with a feature of the present invention, the eccentric rollers 151 and 152 are sheathed around the rotating shaft 14 and enclosed by the ring-shaped collars 161 and 162, respectively. The rolling surfaces of the eccentric rollers 151 and 152 are sustained against the inner surfaces 1611 and 1621 of the ring-shaped collars 161 and 162, respectively. The coupling member 17 includes two clamping blocks 171 and 172, two first pivotal hole pedestals 1711 and 1721, two second pivotal hole pedestals 173 and 174, and two movable bolts 175 and 176. The upper edge of the cutting member 18 is clamped by the clamping blocks 171 and 172. The first pivotal hole pedestals 1711 and 1721 are extended from the top surfaces of the clamping blocks 171 and 172, respectively. The second pivotal hole pedestals 173 and 174 are extended from the outer surfaces 1612 and 1622 of the ring-shaped collars 161 and 162, respectively. The movable bolt 175 penetrates through the second pivotal hole pedestal 173 and the first pivotal hole pedestal 1711 such that the ring-shaped collar 161 is pivotally coupled to the clamping block 171. Likewise, the movable bolt 176 penetrates through the second pivotal hole pedestal 174 and the first pivotal hole pedestal 1713 such that the ring-shaped collar 162 is pivotally coupled to the clamping block 172.
It is preferred that the first pivotal hole pedestal 1711 and the second pivotal hole pedestal 173 have complementary shapes, and the first pivotal hole pedestal 1721 and the second pivotal hole pedestal 174 have complementary shapes. For example, if the first pivotal hole pedestals 1711 and 1721 are male-shaped, the second pivotal hole pedestals 173 and 174 are female-shaped. Whereas, if the first pivotal hole pedestals 1711 and 1721 are female-shaped, the second pivotal hole pedestals 173 and 174 are male-shaped.
It is noted that, however, those skilled in the art will readily observe that numerous modifications and alterations of the pivotal hole pedestals 1711, 1721, 173 and 174 may be made while retaining the teachings of the invention. For example, the first pivotal hole pedestals 1711 and 1721 are integrally formed on the upper edge of the cutting member 18. Alternatively, the second pivotal hole pedestals 173 and 174 are individual components and fastened to the outer surfaces 1612 and 1622 of the ring-shaped collars 161 and 162, respectively. Accordingly, the above disclosure should be limited only by the bounds of the following claims.
Please refer to
In
After the motor 12 is started, the first gear part 131 and the first gear 132 and the second gear 133 of the second gear part are driven to rotate and thus the rotating shaft 14 is rotated in a circular motion along either the clockwise direction or the anti-clockwise direction. In this embodiment, since the rotating shaft 14 is rotated in a circular motion along the anti-clockwise direction R, the sustaining parts 1511 and 1521 of the eccentric rollers 151 and 152 are driven to rotate along the anti-clockwise direction R, as is shown in FIG. 1(b). As a consequence, the sustaining parts 1511 and 1521 are moved in ring-shaped trajectories to be respectively sustained against the inner surfaces 1611 and 1621 of the ring-shaped collars 161 and 162. After the sustaining parts 1511 and 1521 of the eccentric rollers 151 and 152 are rotated for about one-fourth turn, the ring-shaped collars 161 and 162 will be switched to swing along the anti-clockwise direction F due to mechanical transmission. Meanwhile, the second pivotal hole pedestals 173 and 174 are respectively sustained against the clamping blocks 171 and 172, so that the cutting member 18 will be moved along the first lateral plate 111 and the second lateral plate 112 in a downward direction D to implement the cutting operation.
Subsequently, the sustaining parts 1511 and 1521 of the eccentric rollers 151 and 152 are rotated along the anti-clockwise direction R for about one-half turn to be respectively sustained against the inner surfaces 1611 and 1621 of the ring-shaped collars 161 and 162. At that moment, the sustaining parts 1511 and 1521 are directly located above the cutting member 18, and the first pivotal hole pedestals 1711 and 1721 are linearly aligned with the second pivotal hole pedestals 173 and 174, respectively.
Continuously, the sustaining parts 1511 and 1521 of the eccentric rollers 151 and 152 are rotated along the anti-clockwise direction R and the ring-shaped collars 161 and 162 are swung along the anti-clockwise direction F, as can be seen in
Afterwards, the sustaining parts 1511 and 1521 of the eccentric rollers 151 and 152 are continuously rotated along the anti-clockwise direction R until the cutting member 18 is moved to the original position as shown in
For illustration, the eccentric rollers 151 and 152, the ring-shaped collars 161 and 162 and the coupling member 17 are cooperatively referred as a rotational direction switching unit. By means of the rotational direction switching unit, the circular motions of the eccentric rollers 151 and 152 are switched to the linear cutting motions of the cutting member 18.
It is noted that, however, those skilled in the art will readily observe that numerous modifications and alterations of the cutting apparatus may be made while retaining the teachings of the invention. For example, the ring-shaped collars 161 and 162 and the coupling member 17 are omitted, but the eccentric rollers 151 and 152 are directly sustained against the upper edge of the cutting member 18. Alternatively, respective resilient elements (not shown) are received in the first guiding track 1111 and the second guiding track 1121. The restoring forces generated from the compressed resilient elements will facilitate close contact between the eccentric rollers 151, 152 and the cutting member 18 so as to be synchronously shifted upwardly or downwardly.
Moreover, the cutting apparatus of the present invention is capable of cutting various sheet articles with different thickness by changing the gear ratio of the gear set 13 or adjusting the sizes of the eccentric rollers 151, 152, the ring-shaped collars 161, 162 and the guiding tracks 1111, 1121. As a result, the cutting apparatus of the present invention is advantageous of having extensible applications and simple configurations.
While the invention has been described in terms of what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention needs not be limited to the disclosed embodiment. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims which are to be accorded with the broadest interpretation so as to encompass all such modifications and similar structures.
| Number | Date | Country | Kind |
|---|---|---|---|
| 095133179 | Sep 2006 | TW | national |
