JPS5948103A - Manufacture of plate from bamboo material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing flat plates more easily and without waste than from bamboo materials.

A flat plate such as plywood, which is conventionally used as a building material, is cut into a piece 0.2 to 4 times thicker by placing a knife parallel to the axis of a log that rotates around its center. It was manufactured by cutting or planing with a knife from a cut board such as a square lumber, but whichever method is used, a thin plate with a thickness of about 0.2 to 4 mmr11 is cut from the log or square lumber. The work requires skill accumulated over a long period of time and a great deal of labor, and at the same time, a large amount of waste is generated due to tasks such as stripping the bark and converting logs into square timbers.

In addition, once the logs used as this material are cut down, it takes many years to obtain the next material, and at the same time, the unrestricted cutting of these trees is unstable.

Because of this, there is also a problem from the 1st hot spring of Chisan Jisui.

Bamboo, on the other hand, is cultivated all over Japan, and it takes an incomparably shorter time to grow and become a material compared to ordinary wood, and its strength is also incomparable to that of wood. It's almost like a dog.

This invention proposes a method for manufacturing flat plates using bamboo material, which has such excellent properties, without wasting time and without wasting time. Remove the knots inside the cylindrical bamboo material, make its inner diameter constant, then provide a constant depth of +1 at arbitrary intervals along the inner circumferential wall of the bamboo material, and then cut a part of the hollow cylindrical bamboo material. A flat plate is manufactured by cutting the sheet in the horizontal direction and opening it in the vertical direction of the screen, and filling the wedge-shaped space of the cut formed by opening the screen in the vertical direction with an adhesive.

In this invention, in order to remove knots inside a hollow cylindrical bamboo material, for example, a cylindrical metal rod having a cutting edge at the tip and a diameter slightly smaller than the inner diameter of the bamboo material is inserted into the bamboo material and the knots inside are scraped and penetrated. Bye.

In addition, in order to make the inner diameter of bamboo material constant, as shown in Figure 1, the cutting edge /, /...
Insert the knotted tool with the inner knots into the bamboo material while rotating it as described above, and insert the knotted tool into the bamboo material.
・The inner circumferential wall of the bottom D may be cut.

Next, in order to make cuts with a constant depth at arbitrary intervals on the inner peripheral wall of the bamboo material, as shown in Fig. 2, the cutting edge <z, lI... It is convenient to use a tool that makes the support arms S and 3 protrude in a cross-shaped manner within the cylinder 3.

That is, the hollow cylinder 3 is first inserted from one open end, and the cutting edge 2 is inserted from the other open end. Extrude Il...

In this way, there will be a cutting edge q on the inner peripheral wall of the bamboo material.

7α, 7α...zo]
- formed.

Next, the hollow cylinder 3 is rotated so that the cutting edges u, p... are located between the cuts α, ta..., and contrary to the above, the hollow cylinder 3 is passed through the bamboo material and pulled out. , a cut 7h in the middle position of the cuts 7a, 7a...
7b... is formed.

As described above, when the tool shown in Fig. 2 is used to make reciprocating motion inside the bamboo material, the number of cuts D formed on the inner peripheral wall of the bamboo material becomes a multiple. Therefore, by repeating the reciprocating motion an appropriate number of times, the bamboo material This can be achieved by forming a predetermined number of cuts in the inner circumferential wall.

Note that by providing an appropriate number of cutting edges on the outer circumferential surface of the hollow cylinder 3, a predetermined number of cuts may be formed in -times of operations.

Next, make cuts 7α, 7a..., ? on the inner peripheral wall. A,
7h... is formed by cutting a part α of the inner circumferential wall toward the receiving end, and opening the bamboo into the bamboo cage. And the above-mentioned cut colors 7α, 7α... formed by opening in Chiaki of responsibility.

qh, ? The wedge-shaped space of A... is filled with adhesive to create a flat plate.

In this case, when the bamboo material is opened into a flat plate, the cuts are 7α and 7α.
..., qh, 7h... could be split due to excessive force, so first place the bamboo material on a slightly curved surface and make the cuts 7α, 7α..., 7b, 7h a little longer. In this state, it is filled with adhesive, and then opened into a flat plate shape, completely opened, and filled with adhesive.

Note that the depth of cut is 7α, 7α..., qh, qh...
Since it is particularly susceptible to being eaten by insects, it is preferable to include an insect repellent in the adhesive.

As described above, according to the present invention, a flat plate can be manufactured from bamboo material without waste through a series of manufacturing processes.
It is possible to perform a consistent continuous process for manufacturing flat plates, and at the same time, according to the present invention, there is no loss due to peeling the bark or turning logs into square pieces, unlike when manufacturing flat plates from conventional wood. Inugami production becomes possible.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an example of a tool used to make the inner diameter of bamboo material constant in the present invention. Figure 2 is a plan view showing an example of a worker who is frequently used to make cuts of a certain depth at arbitrary intervals on the inner circumferential wall of bamboo material, and Figure 3 shows a part of the bamboo material with cuts made inside. Figure 3 (α) is a plan view showing the state before the bamboo basket is opened, and Figure 3 (h) is the state in which the bamboo basket is opened. A side view showing the procedural amendment (1. December 8, 1980, Director General of the Patent Office, Mr. Waka Aiwao 1, Indication of the case, Patent Application No. 158804/1982, 2, Title of the invention: Method for manufacturing a flat plate from bamboo material) 3. Relationship with the case of the person making the amendment Applicant Tadashi Shimizu 5, Nikkan of the order for amendment, Month, Day 6, 1939, In the specification of the subject matter of the amendment, Section Content 1 of the detailed description of the invention, In the specification, ``Invention of the invention''"Detailedexplanation" section, "Notches 7a, 7a**,
The sun is formed. ”, and “cut 7b at the intermediate position between the cuts 7a, 7a...
, 7b...ψ. is formed. Another example of making cuts of a certain depth at arbitrary intervals on the inner circumferential wall of bamboo material is to use a tool with a circular saw blade having a slightly smaller diameter than the inner diameter of the bamboo material and a long handle attached to the rotating shaft. The circular saw blade of this tool is inserted into the bamboo material while rotating to form a cut, and then the same operation as above is performed while slightly shifting the insertion angle of the circular saw blade to form the cuts in sequence. can be cut A at arbitrary intervals on the inner circumferential wall of the bamboo material. "The reason for correcting it is j-

Claims (1)

[Claims] The knots inside the hollow cylindrical bamboo material are removed to make the inner diameter constant, and then cuts of a certain depth are made at arbitrary intervals along the inner circumferential surface of the hollow cylindrical bamboo material, and then the hollow cylindrical bamboo material is A flat plate made of bamboo material, characterized in that a part of the bamboo material is cut in the longitudinal direction and opened into a screen shape, and the wedge-shaped spaces of the cuts formed by opening the screen screen shape are filled with an adhesive to form a flat board. How to manufacture.