JP4220773B2 - Bamboo roughing equipment - Google Patents

Bamboo roughing equipment Download PDF

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Publication number
JP4220773B2
JP4220773B2 JP2002373800A JP2002373800A JP4220773B2 JP 4220773 B2 JP4220773 B2 JP 4220773B2 JP 2002373800 A JP2002373800 A JP 2002373800A JP 2002373800 A JP2002373800 A JP 2002373800A JP 4220773 B2 JP4220773 B2 JP 4220773B2
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bamboo
cutting
small
small bamboo
feed
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JP2004202821A5 (en
JP2004202821A (en
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詳一 鈴木
晴一 山本
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株式会社ノダ
株式会社山本鉄工所
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Description

【0001】
【発明の属する技術分野】
本発明は竹の荒削り装置に関する。
【0002】
【従来の技術】
下記特許文献1には、竹の長手方向に沿って2分割された半割竹をその両下端部を基準として長手方向に沿って搬送しつつ、中央切削部および内周側面切削部によって内周面の中央部および木端部寄り部分の節隔壁を自動的に除去し、また、内周面の位置検出に応じて外側面を切削して半割竹の厚みが一定になるよう自動的に加工する長尺竹の切削加工装置が記載されている。
【0003】
【特許文献1】
特公平8−18285号公報
【発明が解決しようとする課題】
ところが、この従来技術装置は竹を長手方向に沿って2分割した略半円形断面形状の半割竹を切削加工することを前提とした構成を有しており、竹を小割りにした小割竹(孟宗竹など直径100〜150mm、肉厚10〜20mm程度の竹をその直径に応じて放射状に4〜8分割し且つその長手方向に切断して得られる断面略扇形のもの)を切削加工するには適していない。また、装置構成が複雑なため高価であり、大型で重量があるため移動が困難である、等の問題があった。
【0004】
【課題を解決するための手段】
上記課題を解決するため、本発明は、小割竹の内側節を除去するとともに竹の表面と裏面を同時に切削することができる新規な構成の装置を提供することを目的とする。
【0005】
また、装置構成が簡単で且つ移動可能な程度まで小型軽量化した小割竹の荒削り装置を提供することを目的とする。
【0006】
これらの目的を達成するため、請求項1にかかる本発明は、その表裏面を略垂直にした姿勢の小割竹に対して、その裏面と噛み合いながら回転することにより該小割竹を所定搬送方向に送り込むとともに内側節を押圧して粉砕除去する歯を備えた回転送り歯車と、回転送り歯車により内側節が除去された小割竹の表裏面を切削して所定の厚み寸法とする厚み調整手段と、該小割竹の上下を切削して所定の幅寸法とする幅調整手段とを有してなることを特徴とする竹の荒削り装置である。
【0007】
請求項2は、請求項1に記載の竹の荒削り装置において、さらに、厚み調整手段により小割竹の表面を切削して得られる表皮切削粉と裏面を切削して得られる内皮切削粉とを分ける分別手段を備えることを特徴としている。
【0008】
【発明の実施の形態】
本発明の一実施形態による小割竹の荒削り装置について、添付の図1ないし図5を参照して説明する。この装置は、孟宗竹など直径100〜150mm、肉厚10〜20mm程度の竹をその直径に応じて放射状に4〜8分割し且つその長手方向に切断して得られる断面略扇形のものである小割竹を、その長手方向に沿った所定方向に搬送しながら、その内側節を除去するとともに所定の厚み寸法および幅寸法に切削するものである。この装置は、たとえば長さ750mm×幅550mm×高さ800mmの略箱体である架台29を有するが、この架台29の下部に図示しないキャスターを設け、装置運転時にはキャスターをロック可能または床から浮かせた状態にできるような構成とすることが好ましく、これにより装置運転時には安定した状態を確保しつつも、必要な場合には移設が可能となる。
【0009】
図1において破線で示される小割竹1は、その外側および内側の湾曲面が略垂直になるようにして、架台29の上面中央に延設されたテーブル30上に載置される。小割竹1の上記姿勢を保持するため、ガイド兼上部押さえ10が架台29上面の小割竹搬入側の端部に設けられている。ガイド兼上部押さえ10は、テーブル30を挟んで後述の回転送り歯車2と対向して配置されており、小割竹1の外側湾曲面を押さえる垂直板17と、コイルバネ19による下方付勢力を受けて小割竹1の上端を押さえる水平板18とを有している。
【0010】
回転送り歯車2は、耐摩耗性金属や樹脂などで製造され、その外周に等ピッチで多数の歯を備えた円盤状の歯車体であって、垂直軸25の上端に固着されており、垂直軸25の下端に固着されたプーリ27aと送りロール7の軸26の下端に固着されたプーリ27b間にVベルト28が巻装されていることから、後述のようにしてギヤードモータ20の出力を受けて所定速度に回転駆動される送りロール7〜9と同一速度で所定方向(小割竹1を図1の矢印方向に搬送する方向)に回転駆動される。
【0011】
回転送り歯車2は、テーブル30に載置された小割竹1の略中央(中心線)に合致した高さ位置において、テーブル30を挟んでガイド兼上部押さえ10と対置され、コイルバネ11でガイド兼上部押さえ10に近接する方向に常時付勢されている。コイルバネ11は、回転送り歯車2の外周歯をテーブル30上の小割竹の内側湾曲面や内側節に押圧してめり込ませることによって下記作用を有効に果たすとともに、内側節を押圧粉砕したときの衝撃を吸収するアブソーバとしての機能を果たす。
【0012】
回転送り歯車2は、テーブル30上の小割竹1をガイド兼上部押さえ10との間に挟み込み、その内側湾曲面(裏面)および内側節と噛み合って捕捉しながら小割竹1を図1矢印方向に送り込むとともに、該内側節を押圧・粉砕・除去する作用を果たす。回転送り歯車2の回転速度は、小割竹1を図1矢印方向に小割竹1を送るときの線速度が、小割竹1の所定の搬送速度(たとえば5〜15m/分)と略同一となるように設定される。
【0013】
回転送り歯車2は一般に直径50〜200mm程度、厚み10〜50mm程度であり、これらの範囲内において適宜選択することができる。外周歯の凹凸寸法については、その底部と頂部との凹凸差が7〜15mm程度の範囲とすることが好ましい。外周歯の凹凸差が7mmにも満たない寸法であると小割竹1の内側節を捕捉できない場合が生じて小割竹1を図1矢印方向に送り込む作用が発揮できず、押圧・粉砕・除去作用も十分に発揮できなくなる恐れがあり、一方、凹凸差が15mmを越えるようになると小割竹1の内側節の突起が外周歯の凹部に収まってしまって押圧・粉砕することなく単に送り込むだけの作用になってしまう状況が発生して、その後工程のルーター3による切削に大きな負担がかかることになるので好ましくない。
【0014】
ルーター3は、回転送り歯車2よりも小割竹1搬送方向下流側においてテーブル30の両側に所定間隔を隔てて対置された一対のルーター3a,3bよりなる。各ルーター3a,3bは耐摩耗性金属や樹脂などで製造され、垂直軸(符号なし)に固着されたドリル状ないしスパイラル状の回転刃であって、これらをテーブル30上の小割竹1の外側および内側湾曲面に押圧させながら、モータ33a,33bにより互いに反対方向に高速回転させることによって、ルーター3a,3b間の間隔に応じた所定厚みの板状に切削加工するとともに、ルーター3a,3bの外周に形成されるスパイラル状の回転刃が小割竹1の表裏面と押圧係合して小割竹1を図1矢印方向に送り込む。ルーター3a,3bの外周に形成されるスパイラル刃数は1条であっても複数条であってもよく、刃数を増やすことによって切削速度が向上する。
【0015】
ルーター3a,3bの外周スパイラル刃におけるねじれ角(中心軸に対する外周スパイラル刃の角度)を調整することによって小割竹1の切削状態を調整することができ、ねじれ角を大きくすると切削抵抗が低下して細かい切削粉が得られ、反対にねじれ角を小さくすると切削抵抗が増大するので厚く長い切削粉が得られる。小割竹1の外皮(外側湾曲面)と内皮(内側湾曲面)とは組織状態が異なっており、外皮は非常に硬く密度が高いためこれを切削するルーター3bにはねじれ角を大きくしたものを用い、比較的柔らかく密度が小さい内皮を切削するルーター3aにはねじれ角の小さいものを用いることが好ましい。ルーター3a,3bのねじれ角を同一とすると、密度の大きい外皮を切削するルーター3bの切削抵抗が大きくなって小割竹1を送り込む力が内皮側よりも大きくなってしまい、小割竹1に外皮側が凸となる反りを生じさせる応力が常にかかり、小割竹1をテーブル30に沿って直線的に搬送することが困難になる。
【0016】
図1ないし図5には示されていないが、ルーター3a,3bの下方には切削粉分別装置12が設けられている(図6)。この切削粉分別装置12は、ルーター3a,3bの中間下方に頂点を持つ2つの傾斜面12a,12bを備え、その下端には切削粉収容槽12c,12dが連結されている。ルーター3aにより切削された小割竹1の内皮切削粉c1は傾斜面12aに沿って落下して収容槽12cに収容され、ルーター3bにより切削された小割竹1の外皮切削粉c2は傾斜面12bに沿って落下して収容槽12dに収容される。
【0017】
送りロールは、ルーター3よりも小割竹1搬送方向下流側においてテーブル30の両側に所定間隔を隔てて対置された複数対の送りロールよりなり、この実施形態では3対の送りロール7(7aおよび7b),8(8aおよび8b),9(9aおよび9b)が配置されている。これら送りロールにより、回転送り歯車2によって内側節を除去され且つルーター3によって所定厚みとされた板状の竹材がテーブル30上を図1矢印方向に搬送される。
【0018】
前述したように送りロール7〜9による小割竹1の搬送速度は毎分5〜15m程度が好ましく、このために、これら送りロール7〜9にモータからの動力を伝達し且つその回転を調整する。この実施形態では、架台29に収容されたギヤードモータ20の出力をウォームギア31により減速して送りロール8の一方(8a)の垂直軸21aに伝達してこの送りロール8aを所定方向に回転するとともに、ギア22a,22bを介して他方の送りロール8bの垂直軸21bに伝達してこの送りロール8bを反対方向に同速回転させ、また、Vベルト24a,24b,24c,24dをそれぞれプーリ23a,23b間、23c,23d間、23e,23f間および23g,23h間に巻装することによって垂直軸21a,21bの回転を他の送りロール軸26a,26bおよび32a,32bに伝達して送りロール7(7aおよび7b),9(9a,9b)を同速回転させている。しかしながら、かかる動力伝達に関する構成はこれに限定されるものではなく、たとえば、送りロール7〜9の少なくとも一部については、その一対の送りロールのうちの一方のみに動力を伝達し、他方はフリー回転として板状竹材の搬送に伴ってその外側面(ルーター3bにより切削された外皮面)に摺接しながら従動的に回転するようにしてもよい。
【0019】
各送りロール7〜9の側面にはローゼット状等の凹凸が設けられており、所定厚みとされた板状竹材の外側面および内側面を押圧しながら回転するときの滑りを防止する。各送りロール7〜9における一対のロール間隔は前述のルーター3a,3b間の間隔と略同一とされているが、搬送方向に沿って片側に設けられている送りロール7b,8b,9bの回転軸26b,21b,32bは固定であるのに対して、反対側の送りロール7a,8a,9aの回転軸26a,21a,32aはコイルバネ14,15,16によりそれぞれ送りロール7b,8b,9bに向けて付勢されており、両側の送りロール間に板状竹材を圧接しながら図1矢印方向に搬送する。各送りロールは耐摩耗性金属または樹脂などで製造され、その直径はたとえば50〜150mm程度である。
【0020】
板状竹材の搬送方向において送りロール8,9間には、上下一対のブレード6,6が所定間隔を隔てて設けられている。ブレード6,6は耐摩耗性金属や樹脂などによるナイフ状の刃を有しており、この間を通過する板状竹材の上下端部を引き裂くように切削して所定幅寸法に調整する。
【0021】
このようにして所定の厚み寸法および幅寸法を有する板状に切削加工された小割竹が送りロール9a,9b間を通過し、回動自在の押さえロール13を経て装置から排出される。押さえロール13は、テーブル30上を搬送される間にルーター3およびブレード刃6により切削加工される小割竹の上下方向の振れを防止する。
【0022】
以上に詳述した構成を有する小割竹の荒削り装置の用法および動作について説明する。装置始動前に、処理すべき小割竹1をテーブル30に載置してその先端部分をガイド兼上部押さえ10で所定位置に位置決めする。これにより小割竹1はその外側および内側の湾曲面が略垂直になった姿勢に保持される。このとき、小割竹1の先端は、ガイド兼上部押さえ10の垂直板17と、コイルバネ11の付勢を受けた回転送り歯車2との間に圧接挟持されている。
【0023】
上記のように小割竹1をセットした後に装置を始動する。これによりギヤードモータ20が駆動され、その回転が垂直軸25に伝達されて回転送り歯車2が図2矢印方向に回転するので、ガイド兼上部押さえ10の垂直板17と回転送り歯車2との間に圧接挟持された小割竹1を図1矢印方向に送り出すとともに、その内側節が回転送り歯車2の外周歯によって圧搾粉砕されて除去される。回転送り歯車2はコイルバネ11により常時はガイド兼上部押さえ10に向けて付勢されているが、小割竹1の内側節を圧搾粉砕する際に過大な負荷がかかったときにはコイルバネ11がショックアブソーバーとして機能してその負荷を吸収する。回転送り歯車2により切削された内側節の切削粉は装置下方に落下する。
【0024】
このようにして内側節を粉砕除去されながら図1矢印方向に搬送される小割竹1の先端がルーター3a,3bに到達すると、それらによって外側および内側の湾曲面が切削されて所定厚みの板状竹材に加工される。ルーター3a,3bによって切削された後の切削粉は切削粉分別装置12によって分別され、すなわち、ルーター3aが小割竹1の内側湾曲面を切削して得られる内皮切削粉は収容槽12cに収容され、ルーター3bが外側湾曲面を切削して得られる外皮切削粉は収容槽12dに収容されるので、必要に応じて再利用することができる。
【0025】
このようにして所定厚みの板状に加工されながら図1矢印方向に搬送される小割竹1の先端が送りロール7a,7b間に到達すると、以降は送りロール8a,8bおよび9a,9bさらには押さえロール13によって円滑に搬送されていく。押さえロール7a,8a,9aはコイルバネ14,15,16で対向する押さえロール7b,8b,9bに向けて付勢されており、また、装置入口付近に設けられたガイド兼上部押さえ10にはコイルバネ19により下向き付勢された水平板18が備えられるとともに装置出口付近には押さえロール13が設けられていることから、これらを通過しながら図1矢印方向に搬送される小割竹は、その外側および内側の湾曲面(ルーター切削加工後は略平面)を略垂直に立てた姿勢を保持しながら円滑な搬送が行われる。
【0026】
所定厚みの板状に加工された小割竹1の先端がブレード6に到達すると、上下のブレード間を通過する際に上端および下端が引き裂かれるようにカットされて所定幅に切削加工される。ブレード6により切削された上端部および下端部はそれぞれ上方および下方に排出される。
【0027】
このようにして、装置にセットされた小割竹1は、図1矢印方向への搬送中に先端から末端に向けて順次に上記切削加工処理が施され、ブレード6による切削加工を終えて所定の厚みおよび幅を有する板状竹材となったものが装置から排出されることになる。
【0028】
以上に本発明の実施形態について添付図面に基づいて詳述したが、本発明はこれらの実施形態に限定されるものではなく、特許請求の範囲に記載された範囲内において種々の変形態様を取り得ることは言うまでもない。
【0029】
【発明の効果】
以上に説明したように、本発明による小割竹の荒削り装置は、その表裏面を略垂直にした姿勢の小割竹に対してその裏面と噛み合いながら回転することにより該小割竹を所定搬送方向に送り込むとともに内側節を押圧して粉砕除去する歯を備えた回転送り歯車と、回転送り歯車により内側節が除去された小割竹の表裏面を切削して所定の厚み寸法とする厚み調整手段と、該小割竹の上下を切削して所定の幅寸法とする幅調整手段とを有して構成されているので、小割竹の内側節を除去するとともに竹の表面と裏面を同時に切削することができる。
【0030】
また、厚み調整手段により小割竹の表面を切削して得られる外皮切削粉と裏面を切削して得られる内皮切削粉とを分ける分別手段をさらに備える本発明の実施形態によれば、硬さや密度の異なる外皮切削粉と内皮切削粉とが分別収集されるので、再利用に便利である。
【図面の簡単な説明】
【図1】本発明の一実施形態による小割竹の荒削り装置の正面図である。
【図2】図1中A−A線による断面図である。
【図3】図1中B−B線による断面図である。
【図4】図1中C−C線による断面図である。
【図5】図1中D−D線による断面図である。
【図6】この装置に備えられる切削粉分別装置の概略構成図である。
【符号の説明】
1 小割竹
2 回転送り歯車
3(3a,3b) ルーター
6 ブレード
7(7a,7b),8(8a,8b),9(9a,9b) 送りロール
10 ガイド兼上部押さえ
11 コイルバネ
12 切削粉分別装置
13 押さえロール
14〜16 コイルバネ
17 垂直板
18 水平板
19 コイルバネ
20 ギヤードモータ
21a,21b 送りロール(8a,8b)の垂直回転軸
22a,22b ギア
23a〜23f プーリ
24a〜24d Vベルト
25 回転送り歯車の垂直回転軸
26a,26b 送りロール(7a,7b)の垂直回転軸
27a,27b プーリ
28 Vベルト
29 架台
30 テーブル
31 ウォームギア
32a,32b 送りロール(9a,9b)の垂直回転軸
33a,33b モータ
c1 小割竹の内皮切削粉
c2 小割竹の外皮切削粉
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a roughing device for bamboo.
[0002]
[Prior art]
In Patent Document 1 below, a half-bamboo bamboo divided into two along the longitudinal direction of the bamboo is conveyed along the longitudinal direction with reference to both lower end portions thereof, while the inner peripheral surface is cut by the central cutting portion and the inner peripheral side surface cutting portion. It automatically removes the partition wall near the center of the surface and the wood edge, and automatically cuts the outer surface according to the position detection of the inner peripheral surface so that the thickness of the half-bamboo is constant A long bamboo cutting device to be processed is described.
[0003]
[Patent Document 1]
Japanese Patent Publication No. 8-18285 [Problems to be Solved by the Invention]
However, this prior art device has a configuration premised on cutting a half-bamboo having a substantially semicircular cross-sectional shape obtained by dividing the bamboo into two along the longitudinal direction. Cutting bamboo (substantial fan-shaped cross section obtained by cutting a bamboo with a diameter of 100 to 150 mm and a thickness of about 10 to 20 mm, such as a bamboo sword bamboo, into 4 to 8 radii according to the diameter and cutting in the longitudinal direction) Not suitable for. In addition, there are problems such that the apparatus configuration is complicated and expensive, and the apparatus is large and heavy, making it difficult to move.
[0004]
[Means for Solving the Problems]
In order to solve the above-described problems, an object of the present invention is to provide an apparatus having a novel configuration capable of removing the inner joint of a small bamboo and simultaneously cutting the front and back surfaces of the bamboo.
[0005]
It is another object of the present invention to provide a rough bamboo roughing device that has a simple device configuration and is small and light enough to move.
[0006]
In order to achieve these objects, the present invention according to claim 1 is configured to convey the small bamboo in a predetermined manner by rotating it while meshing with the back surface of the small bamboo with the front and back surfaces being substantially vertical. Thickness adjustment by cutting the front and back surfaces of the rotary feed gear with teeth that feed in the direction and press the inner joint to crush and remove it, and the small bamboo from which the inner joint has been removed by the rotary feed gear. A roughing device for bamboo, characterized by comprising means and width adjusting means for cutting the upper and lower sides of the small bamboo to obtain a predetermined width dimension.
[0007]
In the bamboo roughing device according to claim 1, further, the skin cutting powder obtained by cutting the surface of the small bamboo by the thickness adjusting means and the endothelial cutting powder obtained by cutting the back surface. It is characterized by having a separating means for dividing.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
A rough bamboo roughing apparatus according to an embodiment of the present invention will be described with reference to FIGS. This device is a small fan having a substantially fan-shaped cross section obtained by dividing a bamboo having a diameter of 100 to 150 mm and a wall thickness of about 10 to 20 mm into 4 to 8 in a radial manner according to the diameter and cutting in the longitudinal direction. While the split bamboo is conveyed in a predetermined direction along the longitudinal direction, the inner joint is removed and the cut bamboo is cut into a predetermined thickness and width. This apparatus has a gantry 29 that is a box having a length of 750 mm, a width of 550 mm, and a height of 800 mm. For example, a caster (not shown) is provided below the gantry 29 so that the caster can be locked or floated from the floor when the apparatus is in operation. It is preferable to adopt a configuration that allows the device to be in a closed state. This ensures a stable state during operation of the apparatus, but enables relocation if necessary.
[0009]
The small bamboo 1 indicated by a broken line in FIG. 1 is placed on a table 30 extended in the center of the upper surface of the gantry 29 so that the curved surfaces on the outer and inner sides thereof are substantially vertical. In order to maintain the posture of the small bamboo 1, the guide / upper presser 10 is provided at the end of the small bamboo carrying side of the upper surface of the gantry 29. The guide / upper presser 10 is disposed opposite to the rotary feed gear 2 (described later) across the table 30, and receives a downward biasing force by the vertical plate 17 that presses the outer curved surface of the small bamboo 1 and the coil spring 19. And a horizontal plate 18 that holds the upper end of the small bamboo 1.
[0010]
The rotary feed gear 2 is a disc-shaped gear body that is made of a wear-resistant metal, resin, or the like and has a large number of teeth at an equal pitch on the outer periphery thereof, and is fixed to the upper end of the vertical shaft 25. Since the V belt 28 is wound between the pulley 27a fixed to the lower end of the shaft 25 and the pulley 27b fixed to the lower end of the shaft 26 of the feed roll 7, the output of the geared motor 20 is output as described later. The feed rolls 7 to 9 that are received and rotated at a predetermined speed are rotated in the predetermined direction (the direction in which the small bamboo 1 is conveyed in the direction of the arrow in FIG. 1) at the same speed.
[0011]
The rotary feed gear 2 is opposed to the guide / upper presser 10 with the table 30 interposed therebetween at a height position that matches the approximate center (center line) of the small bamboo 1 placed on the table 30, and is guided by the coil spring 11. It is always urged in the direction approaching the cum top retainer 10. The coil spring 11 effectively performs the following action by pressing the outer peripheral teeth of the rotary feed gear 2 into the inner curved surface or inner node of the small bamboo on the table 30 and press-pulverizes the inner node. It functions as an absorber that absorbs shocks.
[0012]
The rotary feed gear 2 sandwiches the small bamboo 1 on the table 30 between the guide and upper presser 10 and engages and captures the inner curved surface (back surface) and the inner node to capture the small bamboo 1 in FIG. In addition to feeding in the direction, the inner node is pressed, crushed and removed. The rotational speed of the rotary feed gear 2 is substantially equal to a predetermined conveying speed (for example, 5 to 15 m / min) of the small bamboo 1 when the linear bamboo 1 is fed in the arrow direction in FIG. It is set to be the same.
[0013]
The rotary feed gear 2 generally has a diameter of about 50 to 200 mm and a thickness of about 10 to 50 mm, and can be appropriately selected within these ranges. About the uneven | corrugated dimension of an outer periphery tooth | gear, it is preferable to make the uneven | corrugated difference of the bottom part and a top part into the range of about 7-15 mm. If the unevenness of the outer peripheral teeth is less than 7 mm, the inner node of the small bamboo 1 may not be captured, and the action of feeding the small bamboo 1 in the direction of the arrow in FIG. There is a possibility that the removal action cannot be fully exhibited. On the other hand, if the unevenness difference exceeds 15 mm, the protrusion of the inner node of the small bamboo 1 is caught in the recess of the outer peripheral tooth and is simply fed without being pressed or crushed. This is not preferable because a situation occurs in which only the action occurs, and a large burden is imposed on the subsequent cutting by the router 3.
[0014]
The router 3 is composed of a pair of routers 3a and 3b disposed on both sides of the table 30 with a predetermined interval on the downstream side in the conveying direction of the small bamboo 1 from the rotary feed gear 2. Each router 3a, 3b is made of a wear-resistant metal or resin, and is a drill or spiral rotary blade fixed to a vertical axis (not shown), which is attached to the small bamboo 1 on the table 30. While pressing the outer and inner curved surfaces, the motors 33a and 33b are rotated at high speeds in opposite directions to cut into a plate having a predetermined thickness according to the distance between the routers 3a and 3b, and the routers 3a and 3b. Spiral rotary blades formed on the outer periphery of the bamboo are pressed and engaged with the front and back surfaces of the small bamboo 1 to feed the small bamboo 1 in the direction of the arrow in FIG. The number of spiral blades formed on the outer peripheries of the routers 3a and 3b may be one or plural, and the cutting speed is improved by increasing the number of blades.
[0015]
The cutting state of the small bamboo 1 can be adjusted by adjusting the twist angle (angle of the outer spiral blade with respect to the central axis) of the outer peripheral spiral blades of the routers 3a and 3b. When the twist angle is increased, the cutting resistance decreases. On the contrary, if the helix angle is decreased, the cutting resistance increases, so that a thick and long cutting powder can be obtained. The outer skin (outer curved surface) and inner skin (inner curved surface) of small bamboo 1 have different tissue states, and the outer skin is very hard and dense, so the router 3b that cuts it has a larger twist angle It is preferable to use a router 3a having a small twist angle for cutting a relatively soft and low density endothelium. If the torsion angles of the routers 3a and 3b are the same, the cutting resistance of the router 3b that cuts the outer shell having a high density increases, and the force to feed the small bamboo 1 becomes larger than that on the inner side. Stress that causes warping that the outer skin side becomes convex is always applied, and it becomes difficult to convey the small bamboo 1 linearly along the table 30.
[0016]
Although not shown in FIGS. 1 to 5, a cutting powder sorting device 12 is provided below the routers 3a and 3b (FIG. 6). The cutting powder sorting device 12 includes two inclined surfaces 12a and 12b having apexes in the middle lower part of the routers 3a and 3b, and cutting powder storage tanks 12c and 12d are connected to lower ends thereof. The endothelium cutting powder c1 of the small bamboo 1 cut by the router 3a falls along the inclined surface 12a and is stored in the storage tank 12c, and the outer cutting powder c2 of the small bamboo 1 cut by the router 3b is the inclined surface. It falls along 12b and is accommodated in the storage tank 12d.
[0017]
The feed rolls are composed of a plurality of pairs of feed rolls arranged at a predetermined interval on both sides of the table 30 on the downstream side in the conveying direction of the small bamboo 1 from the router 3, and in this embodiment, three pairs of feed rolls 7 (7a And 7b), 8 (8a and 8b), 9 (9a and 9b). By these feed rolls, a plate-like bamboo material having an inner node removed by the rotary feed gear 2 and a predetermined thickness by the router 3 is conveyed on the table 30 in the direction of the arrow in FIG.
[0018]
As described above, the conveying speed of the small bamboo 1 by the feed rolls 7 to 9 is preferably about 5 to 15 m / min. For this reason, the power from the motor is transmitted to these feed rolls 7 to 9 and the rotation thereof is adjusted. To do. In this embodiment, the output of the geared motor 20 accommodated in the gantry 29 is decelerated by the worm gear 31 and transmitted to one of the vertical shafts 21a of the feed roll 8 (8a) to rotate the feed roll 8a in a predetermined direction. , Is transmitted to the vertical shaft 21b of the other feed roll 8b via the gears 22a and 22b, and this feed roll 8b is rotated at the same speed in the opposite direction, and the V belts 24a, 24b, 24c and 24d are respectively connected to the pulleys 23a, By winding between 23b, 23c, 23d, 23e, 23f and 23g, 23h, the rotation of the vertical shafts 21a, 21b is transmitted to the other feed roll shafts 26a, 26b and 32a, 32b to feed roll 7 (7a and 7b), 9 (9a, 9b) are rotated at the same speed. However, the configuration relating to such power transmission is not limited to this. For example, at least a part of the feed rolls 7 to 9 transmits power to only one of the pair of feed rolls, and the other is free. As the rotation of the plate-like bamboo material, the rotation may be performed while sliding on the outer surface (the outer surface cut by the router 3b) as the plate-like bamboo material is conveyed.
[0019]
The side surfaces of the feed rolls 7 to 9 are provided with irregularities such as a rosette shape, and prevent slipping when rotating while pressing the outer and inner surfaces of the plate-like bamboo material having a predetermined thickness. The distance between the pair of rolls in each of the feed rolls 7 to 9 is substantially the same as the distance between the routers 3a and 3b described above, but the rotation of the feed rolls 7b, 8b and 9b provided on one side along the transport direction. While the shafts 26b, 21b, and 32b are fixed, the rotation shafts 26a, 21a, and 32a of the opposite feed rolls 7a, 8a, and 9a are respectively turned to the feed rolls 7b, 8b, and 9b by the coil springs 14, 15, and 16, respectively. The sheet-shaped bamboo material is conveyed in the direction of the arrow in FIG. 1 while being pressed between the feed rolls on both sides. Each feed roll is made of a wear-resistant metal or resin, and its diameter is, for example, about 50 to 150 mm.
[0020]
A pair of upper and lower blades 6 and 6 are provided at a predetermined interval between the feed rolls 8 and 9 in the conveying direction of the plate bamboo. The blades 6 and 6 have knife-shaped blades made of wear-resistant metal, resin, or the like, and are cut so as to tear the upper and lower ends of the plate-like bamboo material passing between them to adjust to a predetermined width dimension.
[0021]
The small bamboo cut into a plate shape having a predetermined thickness and width in this way passes between the feed rolls 9a and 9b, and is discharged from the apparatus through the rotatable pressing roll 13. The holding roll 13 prevents vertical swing of the small bamboo cut by the router 3 and the blade blade 6 while being conveyed on the table 30.
[0022]
The usage and operation of the rough bamboo roughing apparatus having the configuration detailed above will be described. Before starting the apparatus, the small bamboo 1 to be processed is placed on the table 30 and the tip portion thereof is positioned at a predetermined position by the guide / upper presser 10. Accordingly, the small bamboo 1 is held in a posture in which the curved surfaces on the outer side and the inner side are substantially vertical. At this time, the tip of the small bamboo 1 is pressed and sandwiched between the vertical plate 17 of the guide / upper presser 10 and the rotary feed gear 2 urged by the coil spring 11.
[0023]
After setting the small bamboo 1 as described above, the apparatus is started. As a result, the geared motor 20 is driven, and the rotation is transmitted to the vertical shaft 25 and the rotary feed gear 2 rotates in the direction of the arrow in FIG. 2, so that there is a gap between the vertical plate 17 of the guide and upper presser 10 and the rotary feed gear 2. 1 is sent out in the direction of the arrow in FIG. 1, and its inner node is crushed and removed by the outer peripheral teeth of the rotary feed gear 2. The rotary feed gear 2 is normally biased toward the guide and upper presser 10 by the coil spring 11, but when an excessive load is applied when the inner node of the small bamboo 1 is squeezed and pulverized, the coil spring 11 becomes the shock absorber. As a function of absorbing that load. The cutting powder of the inner node cut by the rotary feed gear 2 falls downward in the apparatus.
[0024]
When the tip of the small bamboo 1 conveyed in the direction of the arrow in FIG. 1 while the inner nodes are crushed and removed in this way reaches the routers 3a and 3b, the outer and inner curved surfaces are cut by them, and a plate having a predetermined thickness is obtained. It is processed into bamboo. The cutting powder after being cut by the routers 3a and 3b is sorted by the cutting powder sorting device 12, that is, the endothelial cutting powder obtained by the router 3a cutting the inner curved surface of the small bamboo 1 is stored in the storage tank 12c. Since the outer cutting powder obtained by the router 3b cutting the outer curved surface is stored in the storage tank 12d, it can be reused as necessary.
[0025]
When the tip of the small bamboo 1 that is processed in the direction of the arrow in FIG. 1 while being processed into a plate having a predetermined thickness in this way reaches between the feed rolls 7a and 7b, the feed rolls 8a and 8b and 9a and 9b are further Is smoothly conveyed by the pressing roll 13. The pressing rolls 7a, 8a and 9a are biased toward the pressing rolls 7b, 8b and 9b opposed by the coil springs 14, 15 and 16, and the guide / upper pressing 10 provided near the apparatus entrance has a coil spring. 19 is provided with a horizontal plate 18 biased downward by 19 and a pressing roll 13 is provided in the vicinity of the apparatus outlet. Therefore, the small bamboo conveyed in the direction of the arrow in FIG. In addition, smooth conveyance is performed while maintaining a posture in which the curved surface on the inside (substantially flat after the router cutting process) is held substantially vertically.
[0026]
When the tip of the small bamboo 1 processed into a plate shape with a predetermined thickness reaches the blade 6, it is cut so that the upper end and the lower end are torn when passing between the upper and lower blades, and is cut to a predetermined width. The upper end and lower end cut by the blade 6 are discharged upward and downward, respectively.
[0027]
In this way, the small bamboo 1 set in the apparatus is sequentially subjected to the cutting process from the tip to the end during conveyance in the direction of the arrow in FIG. A plate-like bamboo material having a thickness and width of 2 mm is discharged from the apparatus.
[0028]
Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to these embodiments, and various modifications can be made within the scope described in the claims. Needless to say you get.
[0029]
【The invention's effect】
As described above, the rough bamboo roughing device according to the present invention conveys the small bamboo by predetermined rotation by rotating it while meshing with the back surface of the small bamboo with the front and back surfaces being substantially vertical. Thickness adjustment by cutting the front and back surfaces of the rotary feed gear with teeth that feed in the direction and press the inner joint to crush and remove it, and the small bamboo from which the inner joint has been removed by the rotary feed gear. And a width adjusting means that cuts the upper and lower sides of the small bamboo to a predetermined width dimension, so that the inner node of the small bamboo is removed and the front and back surfaces of the bamboo are simultaneously removed. Can be cut.
[0030]
Further, according to the embodiment of the present invention, further comprising a separating means for separating the outer cutting powder obtained by cutting the surface of the small bamboo by the thickness adjusting means and the endothelial cutting powder obtained by cutting the back surface, Since skin cutting powder and endothelial cutting powder having different densities are collected separately, it is convenient for reuse.
[Brief description of the drawings]
1 is a front view of a rough bamboo roughing device according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is a cross-sectional view taken along the line BB in FIG.
4 is a cross-sectional view taken along line CC in FIG. 1. FIG.
5 is a cross-sectional view taken along line DD in FIG. 1. FIG.
FIG. 6 is a schematic configuration diagram of a cutting powder sorting device provided in this device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Small split 2 Rotating feed gear 3 (3a, 3b) Router 6 Blade 7 (7a, 7b), 8 (8a, 8b), 9 (9a, 9b) Feed roll 10 Guide and upper holding 11 Coil spring 12 Cutting powder separation Device 13 Holding rolls 14-16 Coil spring 17 Vertical plate 18 Horizontal plate 19 Coil spring 20 Geared motors 21a, 21b Vertical rotation shafts 22a, 22b of feed rolls (8a, 8b) Gears 23a-23f Pulleys 24a-24d V belt 25 Rotation feed gear Vertical rotation shafts 26a, 26b Vertical rotation shafts 27a, 27b of feed rolls (7a, 7b) Pulley 28 V belt 29 Base 30 Table 31 Worm gears 32a, 32b Vertical rotation shafts 33a, 33b of feed rolls (9a, 9b) Motor c1 Small cut bamboo skin cutting powder c2 Small bamboo skin cutting powder

Claims (2)

その表裏面を略垂直にした姿勢の小割竹に対してその裏面と噛み合いながら回転することにより該小割竹を所定搬送方向に送り込むとともに内側節を押圧して粉砕除去する歯を備えた回転送り歯車と、回転送り歯車により内側節が除去された小割竹の表裏面を切削して所定の厚み寸法とする厚み調整手段と、該小割竹の上下を切削して所定の幅寸法とする幅調整手段とを有してなることを特徴とする竹の荒削り装置。Rotation with teeth that feed the small bamboo in a predetermined conveying direction by rotating while engaging the small bamboo in a posture in which the front and back surfaces are substantially vertical, and press the inner node to crush and remove it. A feed gear, a thickness adjusting means for cutting the front and back surfaces of the small bamboo from which the inner joint has been removed by the rotary feed gear to obtain a predetermined thickness dimension, and a predetermined width dimension by cutting the top and bottom of the small bamboo A bamboo roughing device, characterized by comprising a width adjusting means. 厚み調整手段により小割竹の表面を切削して得られる外皮切削粉と裏面を切削して得られる内皮切削粉とを分ける分別手段をさらに備えることを特徴とする、請求項1記載の竹の荒削り装置。The bamboo according to claim 1, further comprising: a separating unit that separates an outer cutting powder obtained by cutting the surface of the small bamboo with a thickness adjusting unit and an inner cutting powder obtained by cutting the back surface. Roughing device.
JP2002373800A 2002-12-25 2002-12-25 Bamboo roughing equipment Expired - Fee Related JP4220773B2 (en)

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