JPS6119399B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cutter for cutting synthetic resin plates, which is capable of cutting with reduced lateral pressure during cutting, and is capable of realizing a cutting action with almost no generation of chips.

Conventionally, when cutting synthetic resin boards such as synthetic wood, or when cutting relatively soft synthetic resin boards similar to the above synthetic wood or semi-hard synthetic resin boards to the required size, knife saws, chip saws, etc. are all used in the disk shape. However, if the plate to be cut has no escape on either side, it is likely that a large lateral pressure will be applied during cutting. Moreover, since the cutter is circular, the maximum lateral pressure of the cutter is continuously applied in the form of a strip of circumferential length, so the cutting resistance is large and it is difficult to cut, causing many cuts. There was also a lot of cutting loss.

Therefore, in the present invention, it is possible to provide a cutter that can eliminate the drawbacks of the conventional circular cutter described above.The structure of the cutter is such that the outer shape of the cutter is formed into a triangular or octagonal shape, and the outer shape of the cutter is A two-stage cutting part is formed with a square smaller than the square shape, and a blade part is formed on a part or the whole of the outer shape, and a plurality of these pieces are attached at appropriate intervals by changing the installation angle of each piece. The feature is that they can be placed side by side and rotated.

Next, embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 indicates a plurality of cutting cutters, reference numeral 2 indicates a rotating shaft, and reference numeral 3 indicates a mounting member for mounting the cutting cutter 1 on the rotating shaft, with its pin portion 30.
is fitted into the small hole 13 of the cutting cutter 1,
S is a spacer that appropriately determines the interval between the cutting cutters 1, 1, and when a large number of cutting cutters 1 are arranged side by side, the interval can be easily maintained by adjusting the interval with a spacer S of an appropriate thickness. can. In this first figure, every appropriate number of sheets (every other sheet in the figure)
It is equipped with different mounting angles.

The configuration of each cutting cutter 1 is, for example,
It is made of a thin plate-like material made of JIS standard SK-5, etc., and has a rectangular outer shape as shown in the enlarged view of Figure 3, and has a two-stage cutter with a square shape smaller than the outer diameter to facilitate cutter manufacturing. 4 and 5 are formed in advance, and the entire outer shape forms a blade portion 6 which becomes a cutting edge portion.

The cutter 1, which has such a rectangular outer shape, is attached to a part of the rotating shaft 2, and cuts the synthetic resin board such as synthetic wood by rubbing it against the board while rotating, so to speak, pushing it apart and cutting it. This allows cutting to be done with almost no generation of chips. Comparing this kind of cutting with a circular cutter, which is the circumscribed circle of a quadrilateral, if it is a circular cutter, it will contact the synthetic resin plate of the material to be cut as a strip of circumferential length, and if a lateral pressure of about 25 kg is applied, the outer shape of the quadrilateral In implementing this invention, there is much less contact with the material to be cut, and the lateral pressure is only about 5 kg.
The resistance during cutting is much lower than that of a circular cutter, and the cutter's torque is much lower.

Therefore, when many cutters 1 are arranged in parallel to perform cutting, for example, when a kamaboko board made of synthetic wood is to be provided by cutting a large number of cuts, it is necessary to arrange more than 20 cutters 1 in parallel. Since the lateral pressure received during the cutting action on one side of each cutter 1 can be reduced to about 1/5 compared to conventional circular cutters, this leads to a significant reduction in lateral pressure overall.
A very light cutting action can be achieved.
In particular, as shown in Fig. 1 above, since the juxtaposed state is shifted by an appropriate number of sheets, such as every other sheet, the cutter 1 has a blade 6 that is not aligned with the material to be cut in terms of timing. Therefore, the lateral pressure can be further reduced than when they are arranged in parallel in the same state. In addition, since not all of the cutters have changed positions, and there are cutters that are in the same state every predetermined number of sheets, there is no possibility that the cut material will escape during cutting and cause a dimensional error in the cutting position.

In addition, if the blade part 6 becomes unusable due to rotational action in a certain direction at one part 9 of the corner ridge line 8, it is possible to turn the whole thing upside down.
When used in the same rotation direction, the other part 9'
Since the cutter is used for cutting, there is an economical advantage that one cutter can be used for the service life of two cutters.

Furthermore, if the rectangular cutter 1 is shaped with a small corner cut 10 as shown in Figure 6 in consideration of corner settling, corner damage can be avoided from the beginning, and secondary damage can be prevented after the corner has settled. In some cases, it is used after being modified to the shape shown in FIG. 6 above.

In addition, the overall external shape can be a triangle or an octagon (not shown), a pentagon as shown in Fig. 7, or a hexagon as shown in Fig. 8. In these cases, the corners may be omitted as described above. They will also be free to implement it.

As described above, according to the present invention, the outer shape of the cutter is formed into a triangular or octagonal shape, and the two-stage bridging portion is formed with a smaller square shape than the outer shape,
A blade is formed on part or the entire outer shape,
These cutters are installed in such a way that they can be rotated by changing the mounting angle of each cutter and placing them side by side at appropriate intervals, and each cutter is a single piece, but multiple cutters are placed side by side at precise positions. Because of this, even when making multiple cuts, it is possible to cut without misalignment, and since the multiple cutters installed in parallel work together accurately, accurate cuts can be made. Moreover, since each cutter receives far less lateral pressure than a circular cutter, the cutting action is performed by multiple cutters rotating simultaneously, which improves work efficiency and makes it easy to make multiple cuts in parallel. Efficiency can be further improved. Since the cutting is done by rubbing, there is almost no generation of chips, which is suitable for eliminating material loss, and it is possible to easily cut various materials.

The material to be cut with the cutter is preferably a synthetic resin board, such as a synthetic wood such as extruded foamed polystyrene, or a relatively soft synthetic resin board similar to this, or a semi-hard synthetic resin board. .

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the invention, and Fig. 1 is a perspective view, Fig. 2 is a sectional view, Fig. 3 is a front view showing one cutter, and Fig. 4 is a side view of the previous figure. , FIG. 5 is a partially enlarged sectional view taken along the - line in FIG. 3, FIG. 6 is a front view of the implementation with the corners removed, and FIGS. 7 and 8 are front views of the implementation with different external shapes. be. DESCRIPTION OF SYMBOLS 1... Cutter, 2... Rotating shaft, 3... Mounting member, 6... Blade part, 8... Ridge line, 10... Missing part.

Claims (1)

[Scope of Claims] 1 The outer shape of the cutter is formed into a triangular or octagonal shape, and a two-stage cutting part is formed with a square smaller than the outer shape, and a cutting part is formed on a part or the whole of the outer shape, and these A cutter for cutting a synthetic resin plate, characterized in that a plurality of sheets of the above are arranged side by side at appropriate intervals by changing the mounting angle of each sheet and can be rotated. 2. A cutter for cutting a synthetic resin plate according to claim 1, wherein each cutter has a small corner portion cut away.