JPS581507A - Bending method for wood - Google Patents
Bending method for woodInfo
- Publication number
- JPS581507A JPS581507A JP10012181A JP10012181A JPS581507A JP S581507 A JPS581507 A JP S581507A JP 10012181 A JP10012181 A JP 10012181A JP 10012181 A JP10012181 A JP 10012181A JP S581507 A JPS581507 A JP S581507A
- Authority
- JP
- Japan
- Prior art keywords
- wood
- water
- molded
- moisture content
- bending method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002023 wood Substances 0.000 title claims description 29
- 238000000034 method Methods 0.000 title claims description 10
- 238000005452 bending Methods 0.000 title claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000000748 compression moulding Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 17
- 238000001035 drying Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 239000012778 molding material Substances 0.000 description 2
- 239000003755 preservative agent Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は木材を曲げ加工、特に小さな曲率の曲げ加工を
行うノブ法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a knob method for bending wood, particularly for bending wood with a small curvature.
木材を曲げ加工、特に小さな曲率の曲は加工を行うには
木材にある程度の水分を含有せしめて若干の軟化膨潤状
態にして行わねばならない。このためには半乾燥拐を用
いるか乾燥材に水分を含浸せしめたものを用いるのであ
るが、半乾燥材は所定の水分に調節することは困難であ
シ、また長期の保存が困難であり勿論保存中にも水分含
有鎗は変化してしまう。更に半乾燥材は窓部分が殆んど
の場合脆化しているから曲率の小さな成形には用いるこ
とが出来ず端切れが多数少ずる。そこで長期の保存が容
易で材質のバラツキのない乾燥材を成形時に含水せしめ
る方法が推賞される。上記方法において乾燥材に含水せ
しめるには従来、蒸気養生または水中浸漬が行われてい
る。しか１７これらの方法では含水速度が遅いこと、木
材の含水状態にむらが生ずること、所定の含水率に調節
することが困難であることと言う欠点が存在する。木材
を成形する際に均一に所定の含水率に調節して含水ぜ１
７めることは極め”Ｃ重要である。何となれば含水率が
大きくなる程木材の成形性は良くなるが、含水率が過大
になると成形後の乾燥が困難になり、高温乾燥で乾燥速
度を大とすると乾燥むら、乾燥歪、亀裂等の欠陥が生ず
るからである。In order to bend wood, especially bends with small curvatures, the wood must contain a certain amount of moisture to soften and swell the wood. For this purpose, semi-dry wood is used or dry wood is impregnated with water, but semi-dry wood is difficult to adjust to the desired moisture content and is difficult to store for long periods of time. Of course, the moisture content of the spear changes during storage. Furthermore, since the window portion of semi-dry wood is brittle in most cases, it cannot be used for molding with a small curvature, resulting in a large number of scraps. Therefore, a method is highly recommended in which dry material is easily stored for a long period of time and has a uniform quality, and is hydrated during molding. In the above method, steam curing or immersion in water has conventionally been used to impregnate the desiccant material with water. However, these methods have the disadvantages of slow moisture absorption rate, uneven moisture content of the wood, and difficulty in adjusting the moisture content to a predetermined level. When molding wood, adjust the moisture content uniformly to a predetermined moisture content1.
7.It is extremely important to keep the moisture content high.The higher the moisture content, the better the moldability of the wood will be, but if the moisture content is too high, it will be difficult to dry after molding, and high temperature drying will slow down the drying speed. This is because if the temperature is increased, defects such as uneven drying, drying distortion, and cracks will occur.
本発明は上記従来の欠点を解消して所定量の水分を木材
に均一に含有せしめ、もって曲率の小さな曲げ加工を容
易に行なうことを目的とし、木材に減圧下で水分を含浸
せしめることを骨子とする。The present invention aims to eliminate the above-mentioned conventional drawbacks and uniformly contain a predetermined amount of moisture in wood, thereby facilitating bending with a small curvature.The main objective of the present invention is to impregnate wood with moisture under reduced pressure. shall be.
木材に防腐材、防カビ剤、難燃剤等の薬液を注入する際
に減圧下で行なうことは従来性われている。しかし木材
に曲げ加工を施す際に水分を減圧下で含浸せしめること
は本発明において始めて行われたことであり、か５る新
規な方法において木材を高度に可塑化せしめ、木材加工
上長年未解決の問題であった曲げ加工の際の歩走りを向
上せしめることが始めて実現可能となったのである。It is conventional practice to inject chemical solutions such as preservatives, fungicides, and flame retardants into wood under reduced pressure. However, the present invention is the first to impregnate wood with water under reduced pressure when bending it, and this new method makes wood highly plasticized, which has been an unsolved problem in wood processing for many years. For the first time, it became possible to improve walking speed during bending, which had been a problem in the past.
本発明を以下に詳細に説明する。The present invention will be explained in detail below.
本発明においては乾燥材を用いることは言う迄もないが
、工程１においては木材を所定の形状、例えば板状、角
材状、丸材状に切断、切削してから第１図に示す密閉容
器（１）に入れる。図においてＱｌは木材の被成形材料
である。次いで真空ポンプ（２）を作動して密閉容器（
１）内を減圧にする。この場合密閉容器（１）内の真空
度は真空ポンプ（２）の作動時間によって容易に調節さ
れる。適当な真空度は被成形材料０Ｏの材質によって必
ずしも一様に決捷らないから材質毎に予め決定しておく
必要があるが。It goes without saying that dried wood is used in the present invention, but in step 1, the wood is cut into a predetermined shape, such as a plate, square, or round shape, and then the airtight container shown in FIG. Put it in 1). In the figure, Ql is a wood material to be formed. Next, operate the vacuum pump (2) to open the closed container (
1) Reduce the pressure inside. In this case, the degree of vacuum within the closed container (1) is easily adjusted by the operating time of the vacuum pump (2). Since the appropriate degree of vacuum is not necessarily determined uniformly depending on the material of the material to be molded, it is necessary to determine it in advance for each material.
略５０〜Ｑ ７２２７７１ Ｈｇ程度である。次いで圧
送ポンプ（３）を作動して水（４）を密閉容器（１）内
に圧入する。。It is about 50 to Q722771 Hg. Next, the pressure pump (3) is operated to force water (4) into the closed container (1). .
水（４）には防腐剤、難燃剤等の薬剤を溶解せしめてお
いてもよい。また水（４）はスプレー等によって被成形
材料（１０と接触せしめられてもよい。かくして減圧下
で被成形材料（１）の導管に存在する空気が駆逐された
状態にある所に水と接触することになるから水は瞬時に
して被成形材料Ｏｔ′）の導管内に含浸され、そして被
成形材料θ０の含水率は密閉容器（１）内の真空度によ
って決まるが殆んど１００％近くまで過剰に含水させる
ことが望ましい。工程１における含水速度は従来に比し
て殆んど１０倍にもなる。Agents such as preservatives and flame retardants may be dissolved in the water (4). Further, the water (4) may be brought into contact with the material to be molded (10) by spraying or the like.In this way, the water comes into contact with the material to be molded (1) in a state where the air existing in the conduit of the material to be molded (1) is expelled under reduced pressure. Therefore, water is instantly impregnated into the conduit of the material to be molded Ot'), and the moisture content of the material to be molded θ0 is determined by the degree of vacuum in the closed container (1), but is almost 100%. It is desirable to contain water in excess. The water absorption rate in step 1 is almost 10 times that of the conventional method.
工程２においては工程１において水を所定り含浸せしめ
られた被成形材料００を例えば養生タンクに入れて蒸気
加熱を行なう。このような蒸気加熱によれば工程１にお
いて被成形材料０（〉に含浸せられた水分の蒸発量を規
制して含水率が所定に保たれるのである。そして被成形
材料０１の導管内に含まれる水分が蒸発して逃散する際
に被成形材料０１を高度に可塑化するのである。工程２
において適用される蒸気圧力は０．３〜２ ｋｔｉ／ｄ
であり、被成形材料０１の最終的な含水率は一般的に４
０〜１００重量％である。In step 2, the molding material 00 impregnated with a predetermined amount of water in step 1 is placed in, for example, a curing tank and heated with steam. According to such steam heating, the amount of evaporation of the water impregnated into the material to be molded 0 (>) in step 1 is regulated and the moisture content is maintained at a predetermined level. When the contained moisture evaporates and escapes, the material to be molded 01 is highly plasticized.Step 2
The steam pressure applied at is 0.3-2 kti/d
The final moisture content of the molded material 01 is generally 4.
It is 0 to 100% by weight.
工程３においては工程１，２において所定量の水分を含
有しかつ加熱された被成形材料０１を第２図に示すよう
な上型（５）Ａ、下型（５）Ｂからなる抑圧型（５）に
よって曲げ加工を行なう。この際、被成形材料ＯＩは通
常トーネノト（６）上に載置されるが、本発明の場合は
被成形材料ＯＱが適当な、かつ均一な含水率を有し高度
に可塑化されているから、曲率が可成シ小さな曲げ加工
までトーネット（６）を使用しなくてもよいようになる
。In step 3, the material to be molded 01 that contained a predetermined amount of water and was heated in steps 1 and 2 is put into a suppression mold (5) consisting of an upper mold (5) A and a lower mold (5) B as shown in FIG. 5) Perform the bending process. At this time, the material to be molded OI is usually placed on the tonenote (6), but in the case of the present invention, the material to be molded OQ has an appropriate and uniform moisture content and is highly plasticized. It becomes unnecessary to use the thonet (6) until the bending process has a small curvature.
かくして第３図に示す木材成形品Ｑｌ）を得るが、本発
明によれば従来、不良率が３０〜５０％もあったものが
殆んど不良率Ｏとなり、かくして本発明の効果は絶大な
ものであると言えよう。In this way, the wood molded product Ql) shown in FIG. It can be said that it is a thing.
図は本発明の一実施例を示すものであり、第１図は工程
１を示す模式側断面図、第２図は工程３を示す側面図、
第３図は得られた木材成形品の斜視図である。
図中 （１）・・・・密閉容器、（２）・・・・真空ポ
ンプ、（３）・・・・圧送ポンプ、（４）・・・・水、
（５）・・・・押圧型、α１・・・・被成形材料、０υ
・・・・木材成形品
特許出願人 吉 原 茂The figures show one embodiment of the present invention, in which FIG. 1 is a schematic side sectional view showing step 1, FIG. 2 is a side view showing step 3,
FIG. 3 is a perspective view of the obtained wood molded product. In the diagram: (1)...Airtight container, (2)...Vacuum pump, (3)...Pressure pump, (4)...Water,
(5)...Press mold, α1...Molding material, 0υ
...Wood molded product patent applicant Shigeru Yoshihara
Claims (1)
よって該木材に水を含浸せしめる工程１、 上記水を含浸した木材を蒸気によ−って加熱する工程２
゜ 上記加熱した水制を抑圧成形する工程３゜以上の工程］
、 ２ 、３からなる木材の曲げ加工方法。[Claims] Step 1: impregnating the wood with water by bringing the wood into contact with water under reduced pressure in a closed container; Step 2: heating the water-impregnated wood with steam.
゜Process of compression molding the heated water system 3゜ or more process]
A wood bending method consisting of , 2 and 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10012181A JPS581507A (en) | 1981-06-26 | 1981-06-26 | Bending method for wood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10012181A JPS581507A (en) | 1981-06-26 | 1981-06-26 | Bending method for wood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS581507A true JPS581507A (en) | 1983-01-06 |
| JPH0260481B2 JPH0260481B2 (en) | 1990-12-17 |
Family
ID=14265503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10012181A Granted JPS581507A (en) | 1981-06-26 | 1981-06-26 | Bending method for wood |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS581507A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002321204A (en) * | 2001-04-25 | 2002-11-05 | Eidai Co Ltd | Wood treatment method and floor material or decorative board manufacturing method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3957452B2 (en) * | 2000-11-07 | 2007-08-15 | 成田 え子 | Method for modifying wood |
-
1981
- 1981-06-26 JP JP10012181A patent/JPS581507A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002321204A (en) * | 2001-04-25 | 2002-11-05 | Eidai Co Ltd | Wood treatment method and floor material or decorative board manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0260481B2 (en) | 1990-12-17 |
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