JP2913389B2 - Tatami table fold forming apparatus and fold forming method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for forming a fold on a tatami table, which are generally used for tatami mats and thin tatami mats.

[0002]

2. Description of the Related Art These tatami tables are shown in FIGS. 6A and 6B.
As shown in the figure, the warp a has a certain length of natural rush,
For example, it is obtained by molding a plastic such as polypropylene into a thin tube and weaving it as a weft.
As shown in FIG. 6 (B), the reason for using a thin hollow plastic is to improve the elasticity and reduce the weight of the tatami mat.

As shown in FIG. 6 (C), the four sides of the tatami mat are bent and attached to a tatami mat floor c made of coconut fiber with an adhesive tape d to form a tatami mat or a thin tatami mat. Note that FIG. 6C shows the front side of the tatami cut away.

[0004] When bending such a tatami facing is bending the fold forming portion reserved a ₁ of the tatami facing so as to fold the warp a is easy, rushes and slender tubular plastics b are also folded they elastic strongly Since it rebounds and returns to its original position, it is difficult to bend the folds b ₁ , b ₁ of the tatami surface by folding the rush or the thin tubular plastic b.

Conventionally, when a fold portion of a tatami table is bent in such a manner that a thin tubular plastic is folded, a hot air generator such as a drier is used, and a fold forming portion of the tatami table is formed by hot air from the hot air generator. was heated from the outside, they wore in fold eye.

However, the hot air blown by the hot-air generator hits the tatami wide and does not concentrate on the linear folds, and is not effective in bending the tatami.

Further, when the thin tubular plastic is heated from the outside by the hot air sent by the hot air generator, it takes a long time to heat and the productivity is deteriorated, and the surface of the thin tubular plastic is easily damaged. Further, the apparatus using the hot air generator is increased in size, and a large current is applied to a heater or the like used therein for a long time.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to provide a low-cost tatami table fold forming apparatus which can be linearly bent without increasing the size, with good productivity, and without damaging the surface of the tatami table. Another object of the present invention is to provide a low-cost method of forming a fold of a tatami mat which has good productivity and can be bent linearly without damaging the surface of the tatami mat.

[0009]

Means for Solving the Problems The present invention has been made to solve the above-mentioned problems, and its means is to provide an ultrasonic generator equipped with a horizontally long tool horn as a pedestal. A tool having at least one straight V-shaped cross-section ridge is provided below the ultrasonic generator, and a fold is formed on the tatami mat carried on the tool. Applying a vibration of an ultrasonic wave oscillated by an ultrasonic generator through the tool horn to the portion and pressing the tatami table by the tool horn to form a V-groove fold in the tatami table; It is a forming device.

[0010] Place the tatami mat on sectional inverted V-shaped linear projection, through the tool horn to fold the portion reserved for formation of the tatami table vibration of the ultrasonic wave oscillated by the ultrasonic generator in addition, the <br / > The fold forming section is heated to a temperature at which the fold can be bent by internal friction, and the tool horn presses the tatami table to form a V groove at the fold of the tatami table to bend the tatami table.

According to another aspect of the present invention, there is provided a tool having at least one straight V-shaped cross section provided below an ultrasonic generator equipped with a horizontally long tool horn. carries the tatami mat above, positioning the tatami mat so that the folds of tatami mat comes on top of the projecting Article, the crease formation planned part
The ultrasonic oscillating device oscillates by applying an ultrasonic wave generated by an ultrasonic generator through a tool horn to vibrate, and presses the tatami mat by the tool horn to form a V-groove fold in the tatami mat. Is a method for forming a fold.

[0012] tatami facing creasing method of the present invention, using ultrasound, since heating to a temperature capable of bending the internal friction of the crease formation area of the tatami facing, is in fold eye to be formed <br/> part the The time to reach the temperature is shortened, and the productivity of folding the tatami mat is improved.

According to a third aspect of the present invention, in the method for forming a fold of a tatami mat according to the second aspect, after removing the mud dyeing dye from the natural rush of the tatami mat, the surface of the tatami mat contains water. A method of forming folds on a tatami table, which comprises carrying the tatami table onto a tool having a straight ridge having an inverted V-shaped cross section.

In particular, when bending a tatami table using natural rush, when muddy dye remains in the natural rush, if ultrasonic vibration is applied to a fold forming portion of the tatami table, the dye scatters. Therefore, if the mud dye is removed from the natural rush, and then the surface of the tatami surface is moistened with water and ultrasonic vibration is applied, the tatami surface can be bent without breaking the natural rush.

[0015]

1 to 4 show an apparatus and a method for forming a fold of a tatami mat according to the present invention. 1 is
An ultrasonic generator, in which a pedestal 2 is provided with a rod 3 that moves up and down by hydraulic pressure or the like, and the ultrasonic generator 1 is attached to an upper end of the rod 3. The ultrasonic generator 1
It is a commercial product and generates ultrasonic waves of 15 kHz or more.

In order to apply the ultrasonic vibration oscillated by the ultrasonic generator 1 to the fold of the tatami mat, a horizontally long tool horn 4 is mounted on the ultrasonic generator 1. The tool horn 4
As shown in FIG. 1, the cross section is a horizontally long box made of duralumin having a substantially inverted trapezoidal shape, and its bottom surface 4a is provided with a narrow flat bottom for better transmitting ultrasonic vibration to the tatami table and pressing the tatami table. To

As shown in FIG. 1, the width W of the tool horn 4 is
Desirably matches the width W 'of the tatami mat, but may be smaller. In that case, ultrasonic vibrations need to be applied to the tatami mat by the tool horn 4 multiple times.

Below the ultrasonic generator 1, a tool 5 having a straight ridge 5a having an inverted V-shaped cross section is provided. The tool 5
As shown in FIG. 2, a triangular steel is welded to a flat steel material, or a solid ridge 5a is cut out from a thick steel plate to be integrally formed.

As shown in FIG. 1, the tatami mat 6 is turned in a direction in which a thin tubular plastic is folded, and
And the fold 6a of the tatami table 6 is positioned so as to be on the linear ridge 5a of the tool 5.

Further, as shown in FIG. 3, the rod 3 to which the ultrasonic generator 1 is attached is moved downward, and the tool horn 4 is moved by the bottom surface 4a of the tool horn 4 for 1.5 to 2.5 seconds. At the same time as pressing the fold forming portion 6a of the tatami table 6 placed on the linear ridge 5a with a load of 7.5 to 8.0 kg,
In addition to the fold to be formed <br/> portion 6a ultrasonic vibration from the tool horn 4 is heated to a temperature capable of bending the fold forming portion reserved 6a by internal friction of the fold forming portion reserved 6a of the tatami mat 6 Then, a V-groove-shaped fold is formed in the tatami table 6.

Further, as shown in FIG. 4, the rod 3 is moved upward to separate the bottom surface 4a of the tool horn 4 from the tatami surface 6, and the tatami surface 6 is removed from the tool 5, and the above-mentioned V-groove-shaped The tatami table 6 is bent straight along the fold line.

Another fold form of the tatami table 6 in the same manner as above
A fold is formed on the portion 6b to be formed, and the other fold forming portions 6a 'and 6b' provided on the other end side of the tatami mat are also creased in the same manner.

Then, the tatami table 6 is taken out from the fold forming apparatus, the folds are folded, and the warp yarns are manually folded so that the other fold forming portions 6c and 6d of the tatami table 6 are also formed. Fold, bend the four circumferences of Tatami Table 6.

The tatami mat 6 having the four circumferences folded is placed on the tatami floor and the fold is fixed to the back of the tatami floor with an adhesive tape or the like to form a tatami mat or a thin tatami mat.

The tatami mat used in the fold forming apparatus and the fold forming method described above mainly uses a thin hollow tube made of plastic such as polypropylene, but uses a non-hollow plastic. The method and apparatus of the present invention can also be used for folding a tatami mat using natural rush.

In this case, the mud-dyed dye remains on the natural rush, and if ultrasonic vibration is applied thereto, the dye scatters and the tatami surface becomes dirty. After that, the surface of the tatami mat is moistened with water, ultrasonic vibration is applied to the fold portion of the tatami mat in the same manner as described above, and the load is further lightened, for example, 4
When the tatami mat is pressed by the bottom surface 4a of the tool horn 4 to about 5 kg, the tatami mat can be easily bent without breaking the natural rush.

In the above, the tool 5 has a linear ridge 5
The embodiment in which only one is provided is shown in FIG.
In another embodiment, as shown in Fig. 5, two ridges are spaced apart from each other at a distance equal to the thickness of the tatami floor so that two folds are simultaneously formed on the tatami table 6 at a distance equal to the thickness of the tatami floor. 5 may be provided in parallel. In this case, the width of the bottom surface 4a of the tool horn 4 is made wider than that in the above-described embodiment in order to make two folds on the tatami table 6 at one time. As shown in FIG. 5, a positioning member 7 is provided on the pedestal 2 between the rod 3 and the tool 5, and when the tatami mat 6 is loaded onto the tool 5, a fold forming portion 6 of the tatami mat 6 is formed.
a, 6b are positioned so as to come on the linear ridges 5a, 5b of the tool 5, and when the tatami mat 6 is attached to the tatami mat floor, the portion of the tatami mat attached to the back of the tatami mat with adhesive tape or the like. 6e
To secure.

[0028]

The fold forming device for tatami mats according to the first aspect of the present invention uses a relatively small ultrasonic generating device, so that the entire device does not increase in size, and the ultrasonic generating device is large. Since the current flows for only a very short time, the cost is low.

Moreover, the ultrasonic vibration applied to the fold forming portion of the tatami mat is heated to a temperature at which the fold of the tatami mat can be formed from the internal friction of the fold in a very short time, so that the productivity of folding the tatami mat is improved. It does not damage the surface of rush or thin tubular plastic, in other words, the surface of the tatami mat.

Further, an ultrasonic vibration is applied from a horizontally long tool horn mounted on the ultrasonic generator to a portion where a fold is to be formed on the tatami mat, and at least one of the cross-section inverted V provided on the tool is provided.
By pressing the tatami mat placed on the linear protruding ridge with the tool horn, the tatami mat can be bent straight.

In the method for forming a fold of a tatami table according to the second aspect of the present invention, ultrasonic vibration is applied to a portion where a fold of a tatami table is to be formed in a very short time from a horizontally long tool horn mounted on an ultrasonic generator. Heating due to internal friction of the portion where the fold is to be formed can be performed in a very short time, the productivity of folding the tatami mat is improved, the cost can be reduced, and the surface of the tatami mat is not damaged.

In the method of forming folds on a tatami mat according to the third aspect of the present invention, when natural rush is used for the tatami mat, mud dyeing dyes are completely removed therefrom, and the surface of the natural rush contains moisture. After that, the ultrasonic vibration is applied to the fold forming portion of the tatami table and the tatami table is pressed by the tool horn on at least one straight V-shaped cross-section provided on the tool. In addition, the surface of the tatami table is not damaged without scattering of the dye, the productivity of folding the tatami table is improved, and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a state in which a tatami table is carried into a tatami table fold forming apparatus of the present invention and a fold portion of the tatami table is positioned.

FIG. 2 is a perspective view of the tool of the present invention.

FIG. 3 is a schematic diagram showing a state in which a rod is moved down and a tatami mat is pressed.

FIG. 4 is a schematic diagram showing a state where a tatami table is taken out by moving a rod upward;

FIG. 5 is a schematic view showing another embodiment of the present invention in which a tool is provided with two protrusions.

FIG. 6A is a perspective view of a tatami table. (B) is a partially enlarged view of a tatami table for showing a woven structure of warp and rush.
(C) Schematic which shows the case where the tatami table of (A) is bent and it is attached to a tatami floor.

[Description of Signs] 1 Ultrasonic generator 2 Pedestal 3
Rod 4 Tool horn 5 Tool 5a Straight V-shaped linear ridge 6 Tatami table 6a, 6b Pre- folding
Fixed part

Claims (3)

(57) [Claims] 1. An ultrasonic generator equipped with a horizontally long tool horn is attached to a vertically movable rod provided on a base,
A tool having at least one straight ridge having an inverted V-shaped cross section is provided below the ultrasonic generator, and an ultrasonic wave is generated through the tool horn at a fold forming portion of a tatami mat carried on the tool. An apparatus for forming folds on a tatami mat, wherein a fold of a V-groove is formed on the tatami mat by applying ultrasonic vibrations oscillated by the device and pressing the tatami mat by the tool horn. 2. A tatami mat is loaded on a tool having at least one straight V-shaped cross-section ridge provided under an ultrasonic generator equipped with a horizontally long tool horn, and a fold of the tatami mat is formed.
The tatami mat is positioned so that the portion to be formed is on the ridge, and the vibration of the ultrasonic wave oscillated by the ultrasonic generator is applied to the fold forming portion through the tool horn to vibrate and the tool horn is used. A method of forming a fold of a tatami table, which comprises pressing a tatami table to form a V-groove fold in the tatami table. 3. The method for forming a fold of a tatami mat according to claim 2, wherein the mud dyeing dye is removed from the natural rush of the tatami mat, and then the surface of the tatami mat is moistened with water. A method for forming a fold of a tatami table, comprising loading the tatami table on a tool having a strip.