JPH0310936Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a sheet cutting tool used for cutting tatami covers to match the size of the tatami floor in the tatami manufacturing process.

[Conventional technology]

When cutting a tatami cover placed on a tatami bed to fit the size of the tatami bed, the conventional method is to place a tatami cover 21 on top of a tatami bed 20, as shown in FIG. Place a ruler 22 along the side of the tatami bed 20 on top of the tatami mat 21, and cut off the excess portion of the tatami mat 21 downward from above by placing the cutter 23 along the outer surface of the ruler 22. I have to.

[The problem that the idea attempts to solve]

When cutting off the tatami facing 21 as described above, the cut part of the tatami facing 21 is not supported in any way, so
The force of the cutter 23 during cutting is received at the upper corner of the tatami floor 20. However, the tatami floor 20 is made of straw bundles.
Since it is made of a relatively flexible material such as foamed synthetic resin, the cutting force of the cutter 23 is absorbed by the tatami floor 20, making it difficult to cut.

Furthermore, when cutting along the ruler 22, in order to guide the cutting edge of the cutter 23, a conventional method has been to align the inner surface of the cutting edge of the cutter 23 with the outer surface of the ruler 22.

However, the width (thickness) of the outer surface of the ruler 22 is 1~
Since the distance is about 2 mm, the cutter 23 may come off the ruler 22 due to the force of moving the cutter 23. One solution to this problem is to make the ruler 22 thicker, but this requires a specially designed ruler.

Therefore, this invention was developed to cut sheets that are easy to cut and can be cut accurately using a regular ruler when the object to be cut is not directly supported on a solid stand, such as when cutting tatami mat covers. The technical challenge is to provide the tools.

[Means to solve the problem]

In order to solve the above problems, the present invention is a sheet cutting tool which has a blade attached to the front end of the grip and a guide arm inclined downward at a required angle with respect to the blade at the rear end of the grip. In this configuration, a guide member is attached to the lower end of the guide arm, and the guide member is provided with a stepped portion having a guide surface flush with the surface of the blade, thereby forming an upward blade extending from the tip of the lower side of the blade to the upper side. That is.

[Effect]

When cutting a tatami mat placed on a tatami floor, insert the blade tip into the underside of the tatami mat along a ruler and push the blade forward to scoop up the tatami mat while cutting.

In this case, the horizontal surface of the stepped portion of the guide member rests on the upper surface of the ruler, and the guide surface follows the outer surface of the ruler to guide the movement of the cutting tool in the vertical and horizontal directions.

〔Example〕

As shown in FIG. 1, the sheet cutting tool of the present invention has a blade 4 attached to the front end of a main body 2 protruding from both sides of a gripping part 1 with fixing screws 3, and a fastening screw 3 attached to the rear end of the main body 2. ' Attach the guide arm 5.
The guide arm 5 is tilted downward at a required angle, and the angle is adjusted as appropriate by operating the fastening screw 3'.

A guide roller 6 having an axis perpendicular to the longitudinal direction of the main body 2 is provided at the lower end of the guide arm 5 . The guide roller 6 has a flange 7, and the flange surface 8 is formed to be in the same plane as the surface of the blade body 4.

At the tip of the blade body 4, a blade 9 is formed diagonally upward from the tip of the lower side a to the upper side b. This blade body 4 can be replaced as appropriate by removing the fixing screw 3.

As shown in FIGS. 3 to 5, the sheet cutting tool having the above-described structure has a tatami face 11 placed on a tatami bed 10 and an outer surface 13 of a ruler 12 along the side of the tatami bed 10. The tip of the blade 9 is inserted obliquely into the lower surface of the tatami facing 11 along the outer surface 13 of the ruler 12 (see FIG. 5), and the guide roller 6 is placed on the ruler 12. Also, the brim surface 8 is the outer surface 13 of the ruler 12.
to follow.

From this state, when the ruler 12 is held down and the entire cutting tool is pushed forward, the blade 9 cuts the tatami facing 11 while scooping it up. In this case, the cutting force of the blade 9 is received by the edge of the outer surface 13 of the ruler 12 (see FIG. 6).

Note that instead of the guide roller 6, the guide member may be formed by a stepped slider made of a plastic material such as nylon.

[Effect of idea]

As mentioned above, this invention uses an upward-facing blade to scoop up and cut sheets such as tatami mats from below, so the cutting force of the blade is received by the rigid and flat edge of the ruler. I can do it. Therefore, there is an effect that cutting becomes easier than when cutting downward.

In addition, by aligning the step part of the guide member with the ruler, the overall movement can be guided.In addition to guiding the side of the blade edge with the ruler, the blade is guided at two points, front and back. stable,
Can be cut accurately.

[Brief explanation of drawings]

Figure 1 is a front view of the embodiment, Figure 2 is a plan view of the same as the above, Figure 3 is a longitudinal sectional front view of the same as the above in use, and Figure 4 is a front view of the embodiment.
The figure is a completely cutaway plan view of the same as above, FIG. 5 is an enlarged perspective view showing a part when cut, and FIG. 6 is a sectional view when cut.
FIG. 7 is a sectional view of the conventional example when cut. 1...Gripping part, 2...Body, 3...Fixing screw,
3'...Tightening screw, 4...Blade body, 5...Guide arm, 6...Guide roller, 7...Brim, 8...
Brim surface, 9...blade, 10...tatami floor, 11...tatami surface, 12...ruler, 13...outer surface.

Claims (1)

[Scope of utility model registration request] In a sheet cutting tool, a blade is attached to the front end of the grip, and a guide arm is attached to the rear end of the grip, the guide arm being inclined downward at a required angle with respect to the blade, and the guide member is attached to the lower end of the guide arm. A sheet cutting tool, characterized in that the guide member is provided with a stepped portion having a guide surface flush with the surface of the blade, and an upwardly directed blade is formed from the tip of the lower side of the blade to the upper side.