JPH0251723B2 - - Google Patents
Info
- Publication number
- JPH0251723B2 JPH0251723B2 JP54159423A JP15942379A JPH0251723B2 JP H0251723 B2 JPH0251723 B2 JP H0251723B2 JP 54159423 A JP54159423 A JP 54159423A JP 15942379 A JP15942379 A JP 15942379A JP H0251723 B2 JPH0251723 B2 JP H0251723B2
- Authority
- JP
- Japan
- Prior art keywords
- veneer
- elongated member
- roller
- small
- pressure
- 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.)
- Expired - Lifetime
Links
- 238000005452 bending Methods 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 5
- 239000013013 elastic material Substances 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 239000000835 fiber Substances 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000011120 plywood Substances 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Landscapes
- Veneer Processing And Manufacture Of Plywood (AREA)
Description
【発明の詳細な説明】
本発明はベニヤ単板のテンダーライジング装置
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a veneer veneer tenderizing device.
従来から、ベニヤ単板（以下単に単板と称す）
に柔軟性を付与せしめる為に、該単板に多数の小
割れを形成する装置、所謂テンダーライジング装
置として実用されている装置としては、以下に述
べる三つの型式のものに大別されるが、いずれも
種々の欠点を有し、特定条件下でしか実用できな
い難点があつた。 Conventionally, veneer veneer (hereinafter simply referred to as veneer)
Equipment that forms a large number of small cracks in the veneer in order to impart flexibility to the veneer, a so-called tenderizing equipment, is roughly divided into the following three types: All of them had various drawbacks and could only be put into practical use under specific conditions.
即ち、大径ゴムローラと小径鉄ローラとの間に
単板を挿入し、該単板を折り曲げることによつて
小割れを形成する型式のもの（例えば実公昭50−
32543号）においては、折り曲げにより小割れを
形成する為に、単板の材質、特に剛性によつて小
割れの形成状態が著しく変化し、単板の柔軟性或
いは伸長（のび）の度合が極めて不揃となる。又
前記小径鉄ローラの細径化には限度があるので、
単板厚さが２mm以下のものには小割れが形成しに
くく、薄単板用には不向であり、又前記小径鉄ロ
ーラの駆動或いは回転潤滑の高速対応性にも限度
があるので、高速加工用にも不向である。更に致
命的な欠点は、小割れが単板のいずれか一方の面
にしか形成できない事によつて、例えば挿入時に
単板の裏割れ側を小径鉄ローラ側に選択する必要
があつたり、或いは上下一対の装置が必要となつ
たりして、工程が複数化する事である。 That is, a type in which a veneer is inserted between a large-diameter rubber roller and a small-diameter iron roller, and small cracks are formed by bending the veneer (for example, in
32543), since small cracks are formed by bending, the state of formation of small cracks changes significantly depending on the material of the veneer, especially its rigidity, and the degree of flexibility or elongation of the veneer is extremely high. It will be uneven. Also, there is a limit to how small the diameter of the small diameter iron roller can be made.
Small cracks are difficult to form in veneers with a thickness of 2 mm or less, making them unsuitable for thin veneers, and there is also a limit to the high-speed compatibility of the drive or rotational lubrication of the small diameter iron rollers. It is also unsuitable for high-speed machining. An even more fatal drawback is that small cracks can only be formed on one side of the veneer; for example, when inserting the veneer, it is necessary to select the back crack side of the veneer to be the side of the small diameter iron roller, or A pair of upper and lower devices may be required, resulting in multiple processes.
次に、一対の大径ゴムローラ間に単板を挿入
し、該単板を引延すことによつて小割れを形成す
る型式のもの（例えば特公昭49−32929号）にお
いては、前記大径ゴムローラの変形による部分的
速度変化に伴つて発生する引延し力によつて、単
板を引延すものであるから、単板の材質、特に引
張り強度によつて小割れの形成状態が著しく変化
し、単板の柔軟性或いは伸長の度合が極めて不揃
となる。又ゴムローラの変形による部分的速度変
化に伴つて発生する引延し力の大きさには限度が
あるので、逆に厚目の単板には小割れが形成しに
くく、厚単板用には不向きである。 Next, in a type (for example, Japanese Patent Publication No. 49-32929) in which a veneer is inserted between a pair of large-diameter rubber rollers and a small crack is formed by stretching the veneer, the large-diameter Since the veneer is stretched by the stretching force generated as a result of local speed changes due to the deformation of the rubber roller, the formation of small cracks can be significant depending on the material of the veneer, especially its tensile strength. This results in extremely uneven flexibility or elongation of the veneer. In addition, there is a limit to the amount of stretching force that occurs due to local speed changes due to deformation of the rubber roller, so small cracks are less likely to form on thick veneers; Not suitable.
３番目に、外周に多数の切刃を突設した切込み
ローラと受けローラとの間、或いは外周に多数の
切刃を突設した一対の切込みローラの間に単板を
挿入し、該単板を切刃によつて切断する事によつ
て小割れ（切目）を形成する型式のもの（例えば
特公昭49−42524号）においては、切刃によつて
単板の繊維を切断するものであるから、必要以上
に単板が軟化する場合が多々有り、単板強度低下
の問題が発生する。又反面、切刃によつて単に単
板の繊維を切断するのみであるから伸長の度合も
極めて少なく、単板のくせ、例えば巻ぐせ、所謂
カールも矯正しにくい。又切刃の間隔の狭小化に
は限度があるので狭い間隔で切目を形成しにく
く、薄単板用には不向きである。更に、例えば切
刃の寿命等保守管理の点においても極めて劣悪で
ある。 Third, a veneer is inserted between a cutting roller and a receiving roller that have a large number of cutting blades protruding from the outer periphery, or between a pair of cutting rollers that have a large number of cutting blades protruding from the outer periphery. In the type (for example, Japanese Patent Publication No. 49-42524) in which small cracks (cuts) are formed by cutting with a cutting blade, the fibers of the veneer are cut with the cutting blade. Therefore, there are many cases where the veneer becomes softer than necessary, resulting in the problem of reduced strength of the veneer. On the other hand, since the cutting blade simply cuts the fibers of the veneer, the degree of elongation is extremely small, and it is difficult to correct the curls of the veneer, such as curls. Furthermore, since there is a limit to the narrowing of the interval between the cutting blades, it is difficult to form cuts at narrow intervals, making it unsuitable for making thin veneers. Furthermore, it is extremely poor in terms of maintenance management, such as the lifespan of the cutting blade.
その他、例えば外周に多数の小さな切刃を突設
した疵付けローラ等を用いて、予め単板に疵（弱
点）を形成し、然る後に前記テンダーライジング
装置に該単板を挿入し、多数の小割れを形成せん
とする試みもあるが、単板の材質等の条件によつ
て疵の大きさ、深さ等にムラが生じた場合に該ム
ラが一層拡大されて、単板強度の低下、単板裂断
等の不具合が発生すことになり未だ実用化には至
つていない。 In addition, for example, a flaw (weak point) is formed in the veneer in advance using a flaw forming roller with a large number of small cutting edges protruding from the outer periphery, and then the veneer is inserted into the tenderizing device. Some attempts have been made to form small cracks in the veneer, but if the size and depth of the flaws are uneven due to conditions such as the material of the veneer, the unevenness will be further amplified and the strength of the veneer will be affected. Problems such as deterioration and veneer tearing occur, so it has not yet been put into practical use.
本発明は、斯る従来装置の諸欠点を解決すべく
開発されたもので、極めて簡単な構成による新し
い原理に基づき、種々の材質或いは厚さの単板に
対しほぼ一様に又は任意に変化をもたせて小割れ
を形成することができ而もその割れの形成を単板
の搬送速度と関係なく行い得るテンダーライジン
グ装置を提供せんとするものである。即ち本発明
は、搬送される単板の板面を圧接する部分が長手
方向に多数連続して形成され、而も該圧接側が凸
状となる屈曲により前記各圧接部分の間隔が拡大
されるところの伸長部材を、単板の搬送方向に延
びるよう複数本並列に而も該単板の搬送と共に移
動できるよう備え、前記伸長部材の圧接側には外
周面が弾性体により被覆されている回転自在な受
けローラを備えて前記伸長部材との間に単板の搬
送路を形成し、更に前記伸長部材の圧接側と反対
の側には該伸長部材を受けローラ側へ押圧する加
圧体を備えた構成を主要部とするもので、かかる
ベニヤ単板のテンダーライジング装置によつて単
板の柔軟化及び伸長の適正化を図り、以つて合板
産業の発展に寄与せんとするものである。 The present invention was developed to solve the various drawbacks of the conventional device, and is based on a new principle with an extremely simple structure, and is capable of changing almost uniformly or arbitrarily to veneers of various materials or thicknesses. It is an object of the present invention to provide a tenderizing device that can form small cracks with a high speed and is capable of forming the cracks regardless of the conveying speed of the veneer. That is, in the present invention, a large number of portions that press against the surface of the veneer being conveyed are formed continuously in the longitudinal direction, and the interval between the respective press-welded portions is expanded by bending the press-welding side into a convex shape. A plurality of elongated members are arranged in parallel so as to extend in the conveying direction of the veneer, and are movable together with the conveyance of the veneer, and the press-contact side of the elongated member is rotatable and has an outer circumferential surface covered with an elastic material. A receiving roller is provided to form a veneer transport path between the elongated member and the elongated member, and a pressure body is provided on a side opposite to the pressure contact side of the elongated member for pressing the elongated member toward the receiving roller. This veneer veneer tenderizing device is intended to make the veneer flexible and to optimize its elongation, thereby contributing to the development of the plywood industry.
ここに伸長部材の長手方向とは、文字通り伸長
部材の長さ方向をいい、結果的には伸長部材の伸
長方向を、又複数本並列後はベニヤ単板の搬送方
向と同一方向をさすことになる。 Here, the longitudinal direction of the elongated member literally refers to the length direction of the elongated member, and as a result, it refers to the elongation direction of the elongated member, and after multiple pieces are arranged in parallel, it refers to the same direction as the conveyance direction of the veneer veneer. Become.
本発明の実施例を図面に従つて説明すれば次の
通りである。 Embodiments of the present invention will be described below with reference to the drawings.
第１図〜第３図は、本発明の一実施例を示すも
ので、蛇腹の如き屈曲性を有するコイルバネから
なる伸長部材１を、受けローラ２の軸心と直交す
る方向に延びるよう複数本並列に配設し、該伸長
部材１と受けローラ２との間に単板５の搬送路を
形成する。該受けローラ２の外周面はゴム等の弾
性体３により被覆されており、又該受けローラ２
の回転駆動によつて単板５の搬送が行われるよう
になつている。前記伸長部材１の背面には、該伸
長部材１を前記受けローラ２側へ押圧する円柱状
の加圧ローラ等の加圧体４が備えられ、単板５の
搬送に伴つて移動する伸長部材１を単板５の板面
に圧接できるよう構成されている。 1 to 3 show an embodiment of the present invention, in which a plurality of elongated members 1 made of coil springs having bellows-like flexibility are arranged so as to extend in a direction perpendicular to the axis of a receiving roller 2. They are arranged in parallel, and a conveyance path for the veneer 5 is formed between the elongated member 1 and the receiving roller 2. The outer peripheral surface of the receiving roller 2 is covered with an elastic body 3 such as rubber, and the receiving roller 2
The veneer 5 is conveyed by the rotational drive of the veneer 5. A pressure body 4 such as a cylindrical pressure roller that presses the elongated member 1 toward the receiving roller 2 is provided on the back side of the elongated member 1, and the elongated member moves as the veneer 5 is conveyed. 1 can be pressed against the surface of the veneer 5.
この装置によれば、加圧体４の押圧によつて伸
長部材１が単板５共々受けローラ２側へ屈曲せし
められ、その屈曲によつて該コイルバネの各コイ
ルの間隔が拡大され、即ち単板５の板面に圧接し
た部分が長手方向に広がり、該単板５に局部的な
引張り力が働いて小割れ６が発生し、前記受けロ
ーラ２の回転に伴つて該小割れ６が順次と形成さ
れるのである。この引張り力の大きさは、コイル
バネの屈曲による各コイルの開き具合によつて定
まるため、単板の厚さ、強度、裏割れの有無、裏
割れの向き、或いは単板の搬送速度等の諸条件に
はほとんど無関係に、単板５に小割れ６を形成す
ることができる。又前記受けローラ２の弾性体３
も、変形による局部的速度変化の発生によつて、
単板５の背面から小割れ６の形成並びに拡大を助
長する作用を行うが、小割れ６の広がりは伸長部
材１によつて規制されるので必要以上に拡大され
る事が無く、而も単板の繊維を切断する事のない
引張りによる割れであるから、単板強度低下の弊
害も発生せず、伸長を含めた極めて有効適切なテ
ンダーライジング効果が発揮されるのである。 According to this device, the elongated member 1 is bent together with the single plate 5 toward the receiving roller 2 by the pressure of the pressurizing body 4, and the bending expands the interval between each coil of the coil spring, that is, the single plate 5 is bent toward the receiving roller 2 side. The portion of the board 5 that is in pressure contact with the plate surface spreads in the longitudinal direction, and a local tensile force acts on the veneer 5, causing small cracks 6. As the receiving roller 2 rotates, the small cracks 6 are formed one after another. It is formed as follows. The magnitude of this tensile force is determined by the degree of opening of each coil due to the bending of the coil spring, so various factors such as the thickness and strength of the veneer, presence or absence of cracks on the back, direction of cracks on the back, and conveyance speed of the veneer are determined. Small cracks 6 can be formed in the veneer 5 almost regardless of the conditions. Further, the elastic body 3 of the receiving roller 2
Also, due to the occurrence of local velocity changes due to deformation,
The effect is to promote the formation and expansion of small cracks 6 from the back side of the veneer 5, but since the spread of small cracks 6 is regulated by the elongated member 1, they will not be enlarged more than necessary; Since the cracking is caused by tension without cutting the fibers of the board, there is no adverse effect of a decrease in the strength of the veneer, and an extremely effective and appropriate tenderizing effect including elongation is exhibited.
このように単板の板面に圧接する伸長部材とし
ては、小割れの細密化、汎用性、或いは保守管理
の容易性等の見地からすれば、前記の如き幅方向
に剛性があり而も屈曲性に富んだコイルバネが最
も好ましいが、例えば第７図に示すように、多数
の圧接ブロツク１ｂを長手方向に密接状、場合に
よつては近接状に配置し、それら多数の圧接ブロ
ツク１ｂの一側を硬質ベルト１ａによつて連結し
た構成としても差支えない。又第８図Ａ，Ｂは該
圧接ブロツク１ｂの断面形状を示すものである
が、第８図Ｃの如く圧接ブロツク１ｂと硬質ベル
ト１ａとを硬質樹脂又は硬質ゴム等により一体に
成形し、櫛歯状とすることも可能である。いずれ
にしても搬送される単板の板面を圧接する部分が
長手方向に連続して形成され、而も該圧接側が凸
状となる屈曲により前記各圧接部分の間隔が拡大
される部材であれば、その構成を問うものではな
く、又前記の如く屈曲による各圧接部分の開き具
合によつて、引張り力或いは小割れの広がりが左
右されるので、各圧接部分の間隔或いは長さ（厚
さ）等は、加圧ロールによる屈曲の度合も考慮し
つつ必要に応じて適宜定めるのが望ましい。又各
伸長部材の間隔も、伸長部材同士の干渉或いは小
割れ同士の干渉等を防止するため、第１図に示す
如く適宜の間隔を設けて配設するとよく、更に各
伸長部材を無端状に形成すれば装置が小型化され
てよりよい構成となるのである。尚前記コイルバ
ネの材質としては通常鉄又は鉄の合金が用いられ
るが、斯る金属は単板の樹液等と反応し単板を褐
色に変色させてしまうため、生単板の状態でテン
ダー処理を行う場合には、コイルバネの伸縮を妨
げない範囲内で外周をゴムで被覆するか、或いは
コイルバネにメツキをするかした方がよい。更に
はコイルバネの材質自体を樹液と反応しないステ
ンレス製としてもよいのである。いずれにしても
テンダー処理する単板の状態又は当該単板の使用
目的等を考慮して前記コイルバネを選択すればよ
り一層の効果があげることができる。 In this way, from the viewpoint of miniaturization of small cracks, versatility, or ease of maintenance management, an elongated member that presses against the surface of a veneer should have rigidity in the width direction as described above, yet be flexible. Although a coil spring with high properties is most preferable, for example, as shown in FIG. A structure in which the sides are connected by a hard belt 1a may also be used. Further, FIGS. 8A and 8B show the cross-sectional shape of the press block 1b, and as shown in FIG. It is also possible to have a tooth shape. In any case, the part that presses against the surface of the veneer to be transported is formed continuously in the longitudinal direction, and the distance between the respective press-contact parts is expanded by bending the press-contact side into a convex shape. For example, the configuration does not matter, and as mentioned above, the tensile force or the spread of small cracks depends on the degree of opening of each pressure-welded part due to bending, so the spacing or length (thickness) of each pressure-welded part ) etc. are preferably determined as necessary, taking into consideration the degree of bending caused by the pressure roll. Furthermore, in order to prevent interference between the elongated members or interference between small cracks, the elongated members should be arranged at appropriate intervals as shown in FIG. If formed, the device can be made smaller and have a better configuration. The coil spring is usually made of iron or an alloy of iron, but since such metals react with the sap of the veneer and turn the veneer brown, it is not recommended to tenderize the veneer in its raw state. If this is the case, it is better to cover the outer periphery with rubber within a range that does not hinder the expansion and contraction of the coil spring, or to plate the coil spring. Furthermore, the material of the coil spring itself may be made of stainless steel, which does not react with tree sap. In any case, if the coil spring is selected in consideration of the condition of the veneer to be tenderized, the purpose of use of the veneer, etc., further effects can be obtained.
次に前記加圧体としては、伸長部材を確実に屈
曲せしめる意味から剛体が望ましく、而も該加圧
体の曲率によつて、前記伸長部材の圧接部分の開
き具合が左右されるので、該加圧体の曲率も必要
に応じて適宜定めるのが好ましい。しかし、円柱
状の加圧ローラの如く一定曲率に限るものではな
く、例えば多角柱状、楕円柱状等の回転自在な加
圧ローラを用いれば、任意に引張り力の強弱或い
は引張り力の作用点を変える事が可能で必要に応
じて任意に変化をもたせた小割れを形成する事が
できる。又斯る回転自在な加圧ローラに代えて、
回転しない加圧部材としてもよい。次に単板５は
前記受けローラ２の回転駆動により搬送されるの
が一般的であるが、該単板５の搬送力を他の部材
で供給する場合には、前記受けローラ２の回転駆
動機構は不要となり、該受けローラ２は遊転自在
に備えられることになる。 Next, the pressurizing body is preferably a rigid body in order to reliably bend the elongated member, and since the curvature of the pressurizing body affects the extent to which the press-contact portion of the elongated member opens. It is preferable that the curvature of the pressurizing body is also determined as appropriate. However, it is not limited to a fixed curvature like a cylindrical pressure roller, but if a rotatable pressure roller such as a polygonal column or an elliptical column is used, the strength of the tensile force or the point of application of the tensile force can be changed at will. It is possible to form small cracks with arbitrary changes as necessary. Also, instead of such a rotatable pressure roller,
It is also possible to use a pressure member that does not rotate. Next, the veneer 5 is generally conveyed by the rotation of the receiving roller 2, but when the conveying force of the veneer 5 is supplied by another member, the rotation of the receiving roller 2 is No mechanism is required, and the receiving roller 2 can be freely rotated.
尚蛇行等による各伸長部材同士の干渉並びに伸
長部材による単板の過剰押圧を防止する為には、
第４図の他の実施例の側面図に例示する如く、伸
長部材の厚みに満たない高さを有し、伸長部材の
案内とストツパーの役目を兼ねた鍔部４ａを前記
加圧体に突設するか、或いは逆に該加圧体に同様
の目的を有する溝を穿設するか（図示省略）して
構成するのが望ましく、更に必要に応じては、押
圧による該加圧体の撓みを防止するバツクアツプ
体（図示省略）を加圧体の背後に設けても差支え
ない。 In addition, in order to prevent interference between each elongated member due to meandering etc. and excessive pressure on the veneer by the elongated member,
As illustrated in the side view of another embodiment in FIG. 4, a flange portion 4a having a height less than the thickness of the elongated member and serving as a guide for the elongated member and a stopper is protruded from the pressurizing body. Alternatively, it is preferable to form a groove (not shown) in the pressurizing body for the same purpose. A backup body (not shown) may be provided behind the pressurizing body to prevent this.
又前記伸長部材が屈曲を解かれて、該伸長部材
の各圧接部分が閉じる場合に、単板の微細な繊維
を挾み込んで、該単板が伸長部材の走行方向に搬
送されるのを防止する為に、例えば第３図により
明らかな如く、加圧体の単板搬送方向下手側にお
いて、単板が確実に伸長部材から離れた後に、該
伸長部材の各圧接部分（コイル）が閉じるように
加圧体及び伸長部材を配設するか、或いは第４図
に例示する如く、加圧体の単板搬送方向下手側に
はがし部材７を設けるのが望ましい。更に単板の
重なり等による異常押圧に対応する為に、前記加
圧体と受けローラとは所定圧力下で接離自在に設
けても差支えない。 Further, when the elongated member is unbent and each press-contact portion of the elongated member closes, fine fibers of the veneer are sandwiched to prevent the veneer from being conveyed in the running direction of the elongated member. In order to prevent this, for example, as shown in FIG. 3, on the lower side of the pressurizing body in the veneer conveyance direction, after the veneer is surely separated from the elongated member, each pressure contact portion (coil) of the elongated member is closed. It is desirable to arrange the pressure body and the elongated member as shown in FIG. 4, or to provide a peeling member 7 on the downstream side of the pressure body in the veneer transport direction, as illustrated in FIG. Furthermore, in order to cope with abnormal pressing caused by overlapping veneers, etc., the pressing body and the receiving roller may be provided so as to be able to come into contact with and separate from each other under a predetermined pressure.
次に本発明の変更例を説明する。第５図或は第
６図に示す実施例は、先に説明した実施例の構成
に加えて、前記加圧体４よりも単板の搬送路上手
に、外周に多数の小突刺体８を有する突刺ローラ
９を前記受けローラ２に対設し、該突刺ローラ９
によつて単板５の板面を押圧突刺するように構成
したものである。 Next, a modification of the present invention will be described. In the embodiment shown in FIG. 5 or 6, in addition to the structure of the embodiment described above, a large number of small protrusions 8 are provided on the outer periphery of the veneer on the conveyance path of the veneer, rather than the pressurizing body 4. A pricking roller 9 having a structure is provided opposite to the receiving roller 2, and the pricking roller 9
It is constructed so that the plate surface of the veneer 5 is pressed and pierced by the veneer.
以上の如く構成した装着によれば、受けローラ
２の回転に伴つて、前記突刺ローラ９の小突刺体
８により単板５に多数の突刺疵（図示省略）が形
成され、次いで加圧体４の押圧によつて伸長部材
１が単板５共々受けローラ２側へ屈曲せしめら
れ、その屈曲によつて該伸長部材１の単板５に圧
接した部分が長手方向に広がり、該単板５に局部
的な引張り力が働くが、該単板５には前述の如く
突刺ローラ９の小突刺体８によつて突刺疵、即ち
弱点が形成されているので、前記引張り力は該突
刺疵に集中し、該突刺疵をきつかけ（起点）とし
て多数の小割れが単板５に順次と形成されるので
ある。 According to the mounting configured as described above, as the receiving roller 2 rotates, a large number of puncture flaws (not shown) are formed on the veneer 5 by the small puncture bodies 8 of the puncture roller 9, and then the pressure body 4 Due to the pressure, the elongated member 1 is bent together with the veneer 5 toward the receiving roller 2, and due to the bending, the portion of the elongated member 1 that is in pressure contact with the veneer 5 expands in the longitudinal direction, and the veneer 5 is A local tensile force acts, but as described above, puncture flaws, that is, weak points, are formed on the veneer 5 by the small punctures 8 of the puncture roller 9, so the tensile force is concentrated at the puncture flaws. However, a large number of small cracks are sequentially formed in the veneer 5 using the puncture flaw as a starting point.
前述の如く、小割れは突刺ローラの小突刺体に
よる突刺疵をきつかけとして形成するものである
から、形成が極めて容易であると共に確実であ
り、又前記突刺疵は伸長部材の屈曲による引張り
力を、局部毎に確実に集中せしめる為に形成する
ものであつて、小割れはあくまで伸長部材の屈曲
による引張り力によつて形成されるものであり、
而も小割れの広がりは伸長部材によつて規制され
るので、所定以上に拡大される事がない。そして
例えば単板の材質等の条件によつて、突刺疵の大
きさ、深さ等にムラが発生したとしても、既存の
テンダーライジング装置に本発明に用いる突刺ロ
ーラ若しくはそれに類似するローラを単に付加し
た場合の如き、前記ムラの一層の拡大による単板
強度低下、単板裂断等の不具合が発生せず、伸長
を含め一層優れたテンダーライジング効果が発揮
されるのである。 As mentioned above, small cracks are formed by puncture flaws caused by the small puncture bodies of the puncture roller, so they are extremely easy and reliable to form, and the puncture flaws are formed by the tensile force caused by the bending of the elongated member. The cracks are formed in order to ensure that they are concentrated in each local area, and small cracks are formed solely by the tensile force caused by the bending of the elongated member.
Moreover, since the spread of the small crack is regulated by the elongated member, it will not be enlarged beyond a predetermined value. Even if the size and depth of puncture flaws are uneven due to conditions such as the material of the veneer, for example, the puncture roller used in the present invention or a roller similar to it can be simply added to the existing tenderizing device. In this case, problems such as a decrease in the strength of the veneer and tearing of the veneer due to further expansion of the unevenness do not occur, and even better tenderizing effects including elongation are exhibited.
又小突刺体の配設位置を適宜定めることによ
り、例えば小突刺体を千鳥状に設けることによつ
て、単板の繊維方向に隣り合う小割れが相互につ
ながり合うことが一層確実に防止できるので、単
板強度底下、単板裂断等の弊害を招くことなく柔
軟性、伸長の度合を一層増加させることが可能と
なる。更に、前記突刺ローラの小突刺体は、単板
に単に突刺疵のみを形成すれば良いものであるか
ら、極めて細密に設けることも可能で、既存のテ
ンダーライジング装置では不可能とされていた原
板等の極薄単板（通常0.5mm〜１mm）にも、極呂
めて有効適切に小割れを形成することが可能とな
る。 In addition, by appropriately determining the placement positions of the small protrusions, for example by providing the small protrusions in a staggered manner, it is possible to more reliably prevent small cracks that are adjacent to each other in the fiber direction of the veneer from being connected to each other. Therefore, it is possible to further increase the degree of flexibility and elongation without causing problems such as lower veneer strength and veneer tearing. Furthermore, since the small puncture bodies of the puncture roller need only form puncture flaws on the veneer, they can be provided in extremely fine detail, which is not possible with existing tenderizing equipment. It is possible to form small cracks in extremely thin veneers (usually 0.5 mm to 1 mm) in an extremely effective and appropriate manner.
尚、前記突刺ローラの小突刺体の形状として
は、針状、円錐状、角錐状、楔状等種々の形状が
挙げられるが、単板の繊維を必要以上に切断せず
確実に突刺疵が形成できる形状であれば差支えな
く、高さ等も必要に応じて適宜定めるのが望まし
い。又単板が突刺ローラに突刺された状態のま
ま、該突刺ローラの外周方向に搬送されるのを防
止する為に、第５図に例示する如く、突刺ローラ
の単板搬送路下手側において、単板を受けローラ
側に案内するように伸長部材を配設するか、若し
くは第６図に例示する如く、突刺ローラの単板搬
送路下手側に、単板を受けローラ側に案内する案
内部材１０を設けるのが望ましい。又第５図に示
する如く、伸長部材を受けローラの外周に幾分長
目沿わせて配設すれば、更に言及すると、加圧体
又は加圧体と突刺ローラとの単板搬送方向上手側
において、伸長部材を受けローラの外周に幾分長
目に沿わせて配設し、単板の搬送路を形成すれ
ば、単板の搬送が極めて正確に行なわれるので、
例えば小割れ或いは突刺疵の形成による単板の蛇
行が予め防止できる効果がある。 The shape of the small puncture body of the puncture roller includes various shapes such as needle, conical, pyramidal, and wedge shapes, but puncture defects are formed reliably without cutting the fibers of the veneer more than necessary. There is no problem as long as the shape is possible, and it is desirable to set the height etc. as appropriate. In addition, in order to prevent the veneer from being transported toward the outer circumference of the pricking roller while being pricked by the pricking roller, on the downstream side of the veneer transport path of the pricking roller, as illustrated in FIG. Either an elongated member is provided to guide the veneer toward the receiving roller, or as illustrated in FIG. 6, a guide member is provided on the downstream side of the veneer conveyance path of the stabbing roller to guide the veneer toward the receiving roller. It is desirable to provide 10. Furthermore, as shown in FIG. 5, if the elongated member is arranged along the outer periphery of the receiving roller, it is possible to move the pressure body or the pressure body and the pricking roller in the veneer conveyance direction. If the elongated member is arranged along the outer periphery of the receiving roller on the side to form a conveying path for the veneer, the veneer can be conveyed very accurately.
For example, there is an effect that meandering of the veneer due to the formation of small cracks or puncture flaws can be prevented in advance.
次に第９図、第１０図は本発明の他の変更例を
示し、前記加圧ローラと突刺ローラとを一体とし
た加圧突刺ローラ４′が記載されている。即ちこ
の変更例は、伸長部材の加圧と単板への疵付けを
同時に行わんとするもので、前記伸長部材の圧接
側と反対の側に、該伸長部材を受けローラ側へ押
圧すると共に並列に備えられた伸長部材の間から
単板の板面を押圧突刺する加圧突刺ローラを備え
たことを特徴とし、この加圧突刺ローラの形態と
して、外周に多数の小突刺体４′ａを有した鍔部
４′ｂをローラの軸方向に所定の間隔を置いて突
設したもの（第９図参照）、及び該小突刺体４′ａ
をローラの外周に直接植設したもの（第１０図参
照）が示されている。斯る構成の加圧突刺ローラ
は回転自在に備えられており、ロール外周の小突
刺体４′ａは、伸長部材１を屈曲させ小割れを発
生させる以前に単板５の板面に当接するため、前
記変更例の如く、突刺により生じた疵をきつかけ
（起点）として多数の小割れが順次と形成されて
いくのである。従つて前記変更例とほぼ同様の作
用効果が達成できるのであるが、本変更例におい
てはその突刺疵の形成及び小割れの発生を単一の
ロールで行うことができるのであるから、機構が
簡素化されそれに伴う種々の効果が期待できるの
である。尚小突刺体４′ａは、並列に備えられた
伸長部材の間から単板の板面を押圧突刺できるよ
う備えられており、而もその小突刺体４′ａが第
９図、第１０図に示すように剛体である場合に
は、前記鍔部４′ｂ又は小突刺体４′ａ自体による
伸長部材１の蛇行を防止する案内部材の役目も発
揮できるのである。 Next, FIGS. 9 and 10 show another modification of the present invention, in which a pressure pricking roller 4' in which the pressure roller and the pricking roller are integrated is described. In other words, this modification is intended to simultaneously apply pressure to the elongated member and apply flaws to the veneer, and to apply pressure to the elongated member on the side opposite to the pressure contact side, while pressing the elongated member toward the receiving roller side. It is characterized by being equipped with a pressure stab roller that presses and stabs the plate surface of the veneer from between the elongated members provided in parallel, and this pressure stab roller has a large number of small stab bodies 4'a on the outer periphery. (see Fig. 9), and the small pierced body 4'a.
is shown directly planted on the outer periphery of the roller (see FIG. 10). The pressurized prick roller having such a configuration is rotatably provided, and the small prick bodies 4'a on the outer periphery of the roll contact the surface of the veneer 5 before bending the elongated member 1 and causing small cracks. Therefore, as in the above modification, a large number of small cracks are sequentially formed using the flaw caused by the puncture as a starting point. Therefore, almost the same effect as in the above modification can be achieved, but in this modification, the formation of puncture flaws and the generation of small cracks can be performed with a single roll, so the mechanism is simple. , and various effects can be expected. The small pierced body 4'a is provided so as to press and pierce the surface of the veneer from between the elongated members provided in parallel, and the small pierced body 4'a is shown in FIGS. If it is a rigid body as shown in the figure, it can also function as a guide member to prevent the elongated member 1 from meandering due to the flange 4'b or the small pierced body 4'a itself.
本発明は以上の如く、伸長部材を移動可能に備
え、回転自在な受けローラと共に単板の搬送路を
形成し、更に加圧体によつてこの伸長部材を受け
ローラ側へ押圧することにより、伸長部材の各圧
接部の間隔を拡大させ、各圧接部の間の単板に局
部的な引張り力を付与するものであるから、単板
の材質、厚さ、強度、裏割れの有無、裏割れの方
向及び単板の搬速度等に左右されることなく、ほ
ぼ一様の小割れを形成することができるのであ
る。即ち、前記圧接部分の間隔を加圧体の曲率に
よつて規制することができるため、単板の状態に
あつた圧接部分の間隔規制、小割れの形成がで
き、更には、過度な割れの発生を抑制することも
できるのである。 As described above, the present invention includes a movable elongated member, forms a veneer conveyance path together with a rotatable receiving roller, and further presses the elongated member toward the receiving roller with a pressurizing body. Since the distance between the pressure welding parts of the elongated member is expanded and local tensile force is applied to the veneer between the pressure welding parts, the material, thickness, strength, presence or absence of back cracks, and the back side of the veneer are Almost uniform small cracks can be formed without being affected by the direction of the crack or the conveyance speed of the veneer. That is, since the spacing between the pressure-welded parts can be regulated by the curvature of the pressurizing body, it is possible to regulate the spacing of the pressure-welded parts in the state of a veneer, prevent the formation of small cracks, and furthermore prevent excessive cracking. It is also possible to suppress the occurrence.
従つて、単板の伸長を含めたテンダーライジン
グ効果は極めて著しく、合板産業の発展に寄与す
るところ多大である。 Therefore, the tenderizing effect, including the elongation of the veneer, is extremely significant and greatly contributes to the development of the plywood industry.
図面は本発明の実施の一例を示すものであつ
て、第１図は本発明にかかるテンダーライジング
装置の一部切り欠き平面図、第２図は同側面図、
第３図は同側面部分拡大図、第４図は他の実施例
の側面図、第５図・第６図・第９図及び第１０図
は本発明の変更例の側面図、第７図は伸長部材の
変更例を示す側面部分拡大図、第８図Ａ，Ｂ，Ｃ
は第７図におけるＸ−Ｘ断面図である。
１……伸長部材、２……受けローラ、３……弾
性体、４……加圧体、４ａ……鍔部、４′……加
圧突刺ローラ、４′ａ……小突刺体、４′ｂ……鍔
部、５……単板、６……小割れ、７……はがし部
材、８……小突刺体、９……突刺ローラ、１０…
…案内部材。
The drawings show an example of the implementation of the present invention, in which FIG. 1 is a partially cutaway plan view of a tenderizing device according to the present invention, FIG. 2 is a side view of the same,
FIG. 3 is a partially enlarged view of the same side, FIG. 4 is a side view of another embodiment, FIGS. 5, 6, 9, and 10 are side views of modified examples of the present invention, and FIG. Figures 8A, B, and C are partially enlarged side views showing examples of changes to the elongated member.
is a sectional view taken along line XX in FIG. 7. DESCRIPTION OF SYMBOLS 1... Extension member, 2... Reception roller, 3... Elastic body, 4... Pressure body, 4a... Flange part, 4'... Pressure prick roller, 4'a... Small prick body, 4 'b... Flange portion, 5... Single plate, 6... Small crack, 7... Peeling member, 8... Small puncture body, 9... Puncture roller, 10...
...Guide member.
Claims (1)
が長手方向に多数連続して形成され、而も該圧接
側が凸状となる屈曲により前記各圧接部分の間隔
が拡大されるところの伸長部材を、ベニヤ単板の
搬送方向に延びるよう複数本並列に而も該ベニヤ
単板の搬送と共に移動できるよう備え、前記伸長
部材の圧接側には外周面が弾性体により被覆され
ている回転自在な受けローラを備えて前記伸長部
材との間にベニヤ単板の搬送路を形成し、更に前
記伸長部材の圧接側と反対の側には該伸長部材を
受けローラ側へ押圧する加圧体を備えたことを特
徴とするベニヤ単板のテンダーライジング装置。 ２ 前記伸長部材をコイルバネとした特許請求の
範囲第１項記載のベニヤ単板のテンダーライジン
グ装置。 ３ 前記伸長部材を、多数の圧接ブロツクを長手
方向に密接又は近接状に配置し、それら多数の圧
接ブロツクの一側を帯状体によつて連結して構成
した特許請求の範囲第１項記載のベニヤ単板のテ
ンダーライジング装置。[Scope of Claims] 1. A large number of parts that press against the surface of the veneer veneer being conveyed are formed continuously in the longitudinal direction, and the interval between the respective press-contact parts is increased by bending the press-contact side into a convex shape. A plurality of elongated members are arranged in parallel so as to extend in the conveying direction of the veneer veneer and are movable together with the conveyance of the veneer veneer, and the outer peripheral surface of the elongated member is covered with an elastic material on the pressure contact side. A rotatable receiving roller is provided to form a conveyance path for the veneer veneer between the elongated member and the elongated member, and a roller is provided on the side opposite to the pressing side of the elongated member to press the elongated member toward the receiving roller. A veneer veneer tenderizing device characterized by being equipped with a pressurizing body. 2. The veneer veneer tenderizing device according to claim 1, wherein the elongated member is a coil spring. 3. The elongated member according to claim 1, wherein the elongated member is constructed by arranging a large number of pressure blocks in close or close proximity to each other in the longitudinal direction, and connecting one side of the large number of pressure blocks with a band-shaped body. Tenderizing equipment for veneer veneer.
Priority Applications (14)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15942379A JPS5682202A (en) | 1979-12-08 | 1979-12-08 | Tender rising device for veneer |
| US06/176,995 US4473099A (en) | 1979-08-20 | 1980-08-11 | Method and apparatus for drying veneer sheet |
| GB8026358A GB2058315B (en) | 1979-08-20 | 1980-08-13 | Method of and apparatus for drying veneer sheet |
| FI802580A FI802580A (en) | 1979-08-20 | 1980-08-15 | FOERFARANDE OCH ANORDNING FOER TORKNING AV EN FANERSKIVA |
| DE3031217A DE3031217C2 (en) | 1979-08-20 | 1980-08-19 | Method and device for drying a veneer sheet |
| FR8018101A FR2463668A1 (en) | 1979-08-20 | 1980-08-19 | METHOD AND APPARATUS FOR DRYING PLASTER SHEET FOR PLATE BACK |
| DE19803050609 DE3050609C2 (en) | 1979-08-20 | 1980-08-19 | Device for drying a veneer sheet |
| SE8005813A SE452721B (en) | 1979-08-20 | 1980-08-19 | SET TO DRY A FANER SHEET |
| IT24214/80A IT1148895B (en) | 1979-08-20 | 1980-08-19 | PROCESS AND EQUIPMENT FOR DRYING VENEER SHEETS |
| CA000358586A CA1146742A (en) | 1979-08-20 | 1980-08-19 | Method and apparatus for drying veneer sheet |
| US06/425,925 US4469154A (en) | 1979-08-20 | 1982-09-28 | Tenderizing device |
| US06/425,924 US4442876A (en) | 1979-08-20 | 1982-09-28 | Apparatus for drying veneer sheet |
| US06/425,926 US4486963A (en) | 1979-08-20 | 1982-09-28 | Method and apparatus for drying veneer sheet |
| CA000415371A CA1153285A (en) | 1979-08-20 | 1982-11-10 | Method and apparatus for drying veneer sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15942379A JPS5682202A (en) | 1979-12-08 | 1979-12-08 | Tender rising device for veneer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5682202A JPS5682202A (en) | 1981-07-04 |
| JPH0251723B2 true JPH0251723B2 (en) | 1990-11-08 |
Family
ID=15693413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15942379A Granted JPS5682202A (en) | 1979-08-20 | 1979-12-08 | Tender rising device for veneer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5682202A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5224094A (en) * | 1975-07-10 | 1977-02-23 | Us Government | Method of generating 14 and 16 micron coherent radiations |
-
1979
- 1979-12-08 JP JP15942379A patent/JPS5682202A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5224094A (en) * | 1975-07-10 | 1977-02-23 | Us Government | Method of generating 14 and 16 micron coherent radiations |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5682202A (en) | 1981-07-04 |
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