JP2015107561A - Curl correction device of veneer sheet and correction method of the same - Google Patents

Curl correction device of veneer sheet and correction method of the same Download PDF

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JP2015107561A
JP2015107561A JP2013250310A JP2013250310A JP2015107561A JP 2015107561 A JP2015107561 A JP 2015107561A JP 2013250310 A JP2013250310 A JP 2013250310A JP 2013250310 A JP2013250310 A JP 2013250310A JP 2015107561 A JP2015107561 A JP 2015107561A
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single plate
pressing
veneer
conveying
curl
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JP6292850B2 (en
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成人 金原
Shigeto Kanehara
成人 金原
英貴 山田
Hidetaka Yamada
英貴 山田
勲 川村
Isao Kawamura
勲 川村
貴史 岡内
Takashi Okauchi
貴史 岡内
朋也 三鬼
Tomoya Miki
朋也 三鬼
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Meinan Machinery Works Inc
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Meinan Machinery Works Inc
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  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Veneer Processing And Manufacture Of Plywood (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a curl correction device capable of conveying a veneer sheet smoothly without clogging the veneer sheet, and correcting a curl of the veneer sheet in a flat shape even if the veneer sheet has a small curvature radius and a strong curl.SOLUTION: A veneer sheet 100 conveyed to a first piercing roll 30 by a transport conveyor 10 is driven by the first piercing roll 30 in a state of being pressed by a first veneer sheet pressing part 60a of a roller 60 and being pierced and attached to a piercing body 30a. When the veneer sheet 100 is received by a second piercing roll 40, the veneer sheet 100 is bent in a valley shape by changing the conveyance direction to the opposite direction to the direction of a curl, a rear crack on the undersurface of the veneer sheet is facilitated and at the same time, a large number of new fine cracks are generated, and thus the curl of the veneer sheet is corrected in a flat shape. The veneer sheet 100 is driven by the second piercing roll 40 in a state of being pressed by a second veneer sheet pressing part 60c and being pierced and attached to a piercing body 40a, and discharged through a discharge conveyor 20.

Description

本発明は、円筒状にカールしたベニヤ単板を平坦に矯正する装置及びその矯正方法に関するものである。   The present invention relates to an apparatus for flatly correcting a veneer veneer curled into a cylindrical shape and a correction method therefor.

合板製造の過程において、ベニヤレースなどの単板切削機によって原木から単板を切削した場合、単板がカールする現象が生ずる場合がある。このようなカールが発生する要因の一つは、図21に示されるように、原木101が回転し切削刃物102によって単板100が切削される際、切削刃物102が当たったところから単板100の繊維方向に裏割れ100aが発生することにあり、この場合、繊維方向に直交して曲率半径の大きい比較的緩やかなカールが発生する。また、カールが発生する別の要因としては、原木101の切削が中心部101aへと進むにつれ、もともとの原木の形状に倣ってカールが発生することにあり、この場合、図22に示されるように、中心部101aに近づくにつれ、繊維方向に直交して単板の反裏割れ側を凸面とする曲率半径の小さい比較的強いカールが発生する。   In the process of manufacturing plywood, when a veneer is cut from a raw wood by a veneer cutting machine such as a veneer, a phenomenon that the veneer curls may occur. As shown in FIG. 21, one of the factors that cause such curling is that the veneer 100 rotates from where the cutting blade 102 hits when the log 101 is rotated and the veneer 100 is cut by the cutting blade 102. The back crack 100a occurs in the fiber direction. In this case, a relatively gentle curl having a large curvature radius perpendicular to the fiber direction is generated. Another factor that causes curling is that curling occurs following the shape of the original log as the cutting of the log 101 proceeds to the central portion 101a. In this case, as shown in FIG. In addition, as the center portion 101a is approached, a relatively strong curl having a small radius of curvature with a convex surface on the opposite side of the single plate perpendicular to the fiber direction is generated.

このような切削時の裏割れに起因して生じた単板のカールを平坦に矯正する装置については、特許文献1或いは2などに開示されている。
特許文献1には、図19に示すように、大径軟質の駆動ローラ201と、一対の小径硬質の従動ローラ202a、202bとによって構成される装置が開示されており、この装置は、駆動ローラ201と従動ローラ202a、202bとの間に単板を屈曲させるための屈曲部215が形成されている。本装置によれば、カールの凸面を下側にして載置された単板100が両ローラの間を通過する際、屈曲部215において単板100がカールの方向と反対の向き(山折り)に曲げられるため、単板の反裏割れ側に微細な割れが発生し、裏割れ側と反裏割れ側の応力が釣り合うことによって単板100のカールが矯正される。
An apparatus for flatly correcting the curl of a single plate caused by such a back crack at the time of cutting is disclosed in Patent Document 1 or 2 or the like.
As shown in FIG. 19, Patent Document 1 discloses an apparatus including a large-diameter soft driving roller 201 and a pair of small-diameter hard driven rollers 202a and 202b. A bent portion 215 for bending a single plate is formed between 201 and driven rollers 202a and 202b. According to this apparatus, when the single plate 100 placed with the convex surface of the curl on the lower side passes between both rollers, the single plate 100 is in the direction opposite to the curl direction (mountain fold) at the bent portion 215. Therefore, a fine crack is generated on the anti-back crack side of the single plate, and the curl of the single plate 100 is corrected by balancing the stress on the back crack side and the anti-back crack side.

一方、特許文献2には、図20に示すように、植針チェーン301、抜針部材302、水平支持部材303、及び一対の押圧ローラ304a、304bによって構成される装置が開示されており、この装置は、水平支持部材303の先端において抜針部材302との間で屈曲部315が形成されている。本装置によれば、カールの凸面を下側にして載置された単板100が下流側に搬送されると押圧ローラ304aと304bとに挟まれることによって植針チェーン301に刺着され、更に下流側に搬送されると前記屈曲部315において単板100がカールの方向と反対の向き(山折り)に曲げられる。そのため、単板の反裏割れ側に微細な割れが発生し、裏割れ側と反裏割れ側の応力が釣り合うことによって単板100のカールが矯正される。   On the other hand, as shown in FIG. 20, Patent Document 2 discloses an apparatus including a needle-planting chain 301, a needle-extracting member 302, a horizontal support member 303, and a pair of pressing rollers 304a and 304b. In the apparatus, a bent portion 315 is formed between the tip of the horizontal support member 303 and the needle extraction member 302. According to this apparatus, when the veneer 100 placed with the convex surface of the curl on the lower side is conveyed downstream, it is stuck to the needle chain 301 by being sandwiched between the pressing rollers 304a and 304b. When conveyed downstream, the single plate 100 is bent in the direction opposite to the curl direction (mountain fold) at the bent portion 315. Therefore, a fine crack is generated on the anti-back crack side of the single plate, and the curl of the single plate 100 is corrected by balancing the stress on the back crack side and the anti-back crack side.

特開昭60−214901号公報JP-A-60-214901 特公昭62−47682号公報Japanese Examined Patent Publication No. 62-47682

これらの特許文献1及び2に開示される装置によれば、切削時の裏割れに起因して生ずる曲率半径の大きい緩やかなカールであればある程度矯正することが可能である。
しかしながら、特許文献1の装置は、駆動ローラ201と単板100との摩擦力を利用して単板100を駆動させるものであるため、単板100のカールの曲率半径が小さくカールが強い場合は、摩擦力が足りずに駆動ローラ201が空転してしまい、駆動力不足となって単板100が両ローラの間で詰まってしまうおそれがあった。
また、特許文献2の装置は、植針チェーン301によるせん断力を利用して単板100を搬送するため上述のような空転の問題は生じ難いが、単板の抵抗力が最も大きくなる屈曲部315付近に駆動力がないため、単板100のカールが強いと抵抗に負けて単板100が詰まってしまうおそれがあった。
According to the devices disclosed in these Patent Documents 1 and 2, a moderate curl having a large curvature radius caused by a back crack at the time of cutting can be corrected to some extent.
However, since the apparatus of Patent Document 1 drives the single plate 100 using the frictional force between the driving roller 201 and the single plate 100, the curl radius of curvature of the single plate 100 is small and the curl is strong. The driving roller 201 is idled due to insufficient frictional force, and the driving force is insufficient, and the single plate 100 may be clogged between the two rollers.
In addition, since the apparatus of Patent Document 2 conveys the veneer 100 using the shearing force generated by the needle chain 301, the above-described problem of idling is unlikely to occur, but the bent portion where the resistance force of the veneer is the largest. Since there is no driving force in the vicinity of 315, if the curl of the single plate 100 is strong, the single plate 100 may be clogged due to resistance.

本発明は、以上の問題点を解決するためになされたものであり、曲率半径が小さく強いカールの単板であっても、単板を詰まらせることなくスムーズにカールを矯正する装置を提供することを課題とする。   The present invention has been made to solve the above-described problems, and provides an apparatus for smoothly correcting a curl without clogging a single plate even when the curl has a small radius of curvature and is strong. This is the issue.

上記課題を解決するために、本願発明者は、以下のような単板のカール矯正装置を提供する。   In order to solve the above-described problems, the present inventor provides a single-plate curl correction apparatus as described below.

本発明は単板を搬送しながら前記単板のカールを平坦に矯正する、単板のカール矯正装置である。この装置は、前記単板を駆動して搬送するための二つの搬送部材であって、前記単板の搬送方向の上流側に位置する第一搬送部材及び前記単板の搬送方向の下流側に位置する第二搬送部材と、前記単板を前記第一搬送部材に押圧するための第一押圧部材と、前記単板を前記第二搬送部材に押圧するための第二押圧部材と、を有しており、前記第一搬送部材及び前記第二搬送部材はその外縁に多数の突刺体を有しており、前記第一搬送部材の前記多数の突刺体の先端を結んだ第一仮想線の一部と、前記第二搬送部材の前記多数の突刺体の先端を結んだ第二仮想線の一部が、搬送方向において交差する部分を有し、且つ、前記第一搬送部材により搬送されてきた前記単板が前記第二搬送部材に受け渡された際に、前記単板の搬送の向きが前記単板のカールの方向と反対の向きに変わるように配置されており、前記第一押圧部材は、前記第一仮想線と、前記第一押圧部材のうち前記第一仮想線との距離が最も近い部分である第一単板押圧部との間隔が、前記単板の厚みよりも小となる位置に配置されており、前記第二押圧部材は、前記第二仮想線と、前記第二押圧部材のうち前記第二仮想線との距離が最も近い部分である第二単板押圧部との間隔が、前記単板の厚みよりも小となる位置に配置されている。
このような単板のカール矯正装置によれば、第一搬送部材と第一押圧部材との間隔、および第二搬送部材と第二押圧部材との間隔が単板の厚みより狭い部分を有しているので、単板がその部分を通過する際、突刺体に向けて押圧され、単板は突刺体に刺着された状態で搬送される。このため、搬送方向に連続して配置された二つの搬送部材によって上流から下流に亘る広い領域で単板に駆動力を連続的に伝えることができるため、曲率半径が小さく強いカールの単板であっても搬送の過程で単板が詰まることを防止することができる。さらに、第一搬送部材から第二搬送部材へと単板が受け渡された際、単板の搬送の向きがカールの方向と反対の向きに変わって単板が谷折りに屈曲されることにより既存の裏割れが助長され、且つ、新たな微細な割れを多数発生させることによって単板のカールを平坦に矯正することができる。
The present invention is a single-plate curl correcting apparatus that straightens the curl of the single plate while conveying the single plate. The apparatus includes two conveying members for driving and conveying the veneer, the first conveying member located upstream in the conveying direction of the veneer and the downstream in the conveying direction of the veneer. A second conveying member positioned; a first pressing member for pressing the single plate against the first conveying member; and a second pressing member for pressing the single plate against the second conveying member. The first conveying member and the second conveying member have a large number of piercing bodies on their outer edges, and the first imaginary line connecting the tips of the numerous piercing bodies of the first conveying member. A part of the second imaginary line connecting a part and the tips of the plurality of piercing bodies of the second conveying member has a portion intersecting in the conveying direction, and has been conveyed by the first conveying member. When the single plate is transferred to the second conveying member, the direction of conveyance of the single plate is the single plate. The first pressing member is disposed at a portion where the distance between the first imaginary line and the first imaginary line is the closest to the first imaginary line. An interval with a certain first veneer pressing part is arranged at a position smaller than the thickness of the veneer, and the second pressing member is the second imaginary line and the second pressing member. The distance from the second veneer pressing portion, which is the portion closest to the second imaginary line, is arranged at a position that is smaller than the thickness of the veneer.
According to such a single-plate curl correcting device, the distance between the first conveying member and the first pressing member and the distance between the second conveying member and the second pressing member have portions that are narrower than the thickness of the single plate. Therefore, when the veneer passes through the portion, the veneer is pressed toward the piercing body, and the veneer is conveyed in a state of being stuck to the piercing body. For this reason, since the driving force can be continuously transmitted to the single plate in a wide area extending from the upstream to the downstream by the two transfer members arranged continuously in the transfer direction, the single plate of the curl with a small curvature radius is strong. Even if it exists, it is possible to prevent the veneer from being clogged during the conveyance process. Further, when the veneer is transferred from the first conveying member to the second conveying member, the direction of conveyance of the veneer is changed to the direction opposite to the curl direction, and the veneer is bent in a valley fold. Existing back cracks are promoted, and a single plate curl can be corrected flatly by generating many new fine cracks.

上記と同様の目的は、以下の方法によっても達成することができる。
即ち、その外縁に多数の突刺体を有する第一搬送部材及び第二搬送部材と、前記第一搬送部材の前記多数の突刺体の先端を結んだ第一仮想線と、前記第一仮想線との距離が最も近い部分である第一単板押圧部との間隔が、前記単板の厚みよりも小となる位置に配置されている第一押圧部材と、前記第二搬送部材の前記多数の突刺体の先端を結んだ第二仮想線と、前記第二仮想線との距離が最も近い部分である第二単板押圧部との間隔が、前記単板の厚みよりも小となる位置に配置されている第二押圧部材と、を有する単板のカール矯正装置において実行される方法であって、前記単板を前記第一搬送部材により駆動して搬送し、前記第一押圧部材により前記単板を前記第一搬送部材に押圧し、前記第一搬送部材により搬送されてきた前記単板を前記第二搬送部材に受け渡すとともに、前記単板の搬送の向きを前記単板のカールの方向と反対の向きに変化させ、前記単板を前記第二搬送部材に押圧し、前記第二搬送部材により搬送する方法である。
The object similar to the above can also be achieved by the following method.
That is, a first transport member and a second transport member having a large number of piercing bodies on the outer edge thereof, a first imaginary line connecting tips of the multitude of piercing bodies of the first transport member, and the first imaginary line The first pressing member disposed at a position where the distance from the first veneer pressing portion that is the closest portion is smaller than the thickness of the veneer, and the multiple of the second conveying member At a position where the distance between the second imaginary line connecting the tips of the piercing body and the second single plate pressing portion, which is the closest distance between the second imaginary line, is smaller than the thickness of the single plate. And a second pressing member that is disposed in a single-plate curl correcting device, wherein the single plate is driven and transported by the first transport member, and the first pressing member The single plate that has been transported by the first transport member by pressing the single plate against the first transport member While passing to the second conveying member, changing the conveying direction of the single plate to a direction opposite to the curling direction of the single plate, pressing the single plate against the second conveying member, and It is the method of conveying by a member.

また、このような単板のカール矯正装置は、前記第一押圧部材から前記第二押圧部材に向かって前記単板を案内するガイド面を有するガイド部材を更に有しており、前記ガイド部材は、前記第一押圧部材と前記第二押圧部材との間に配置され、前記ガイド部材の前記ガイド面は、前記第一単板押圧部と前記第二単板押圧部とを結んだ第三仮想線から、前記第一仮想線と前記第二仮想線とが交差する点に向かって凸状に形成されていてもよい。
このようなガイド部材を有しない場合、単板が第二搬送部材に受け渡された際、単板の性質によっては、単板が第一搬送部材の突刺体から連鎖的に抜けるおそれがあるが、このようなガイド部材を有する単板のカール矯正装置によれば、単板はガイド部材のガイド面に案内されるため連鎖的に突刺体から抜けることがなくなり、単板の曲率半径を維持しつつ第二押圧部材へと単板を導くことが可能となる。
In addition, such a single-plate curl correction apparatus further includes a guide member having a guide surface for guiding the single plate from the first pressing member toward the second pressing member, The third virtual member is disposed between the first pressing member and the second pressing member, and the guide surface of the guide member connects the first single plate pressing portion and the second single plate pressing portion. From the line, it may be formed in a convex shape toward the point where the first virtual line and the second virtual line intersect.
When such a guide member is not provided, when the veneer is transferred to the second transport member, depending on the properties of the veneer, there is a possibility that the veneer may be chained out from the piercing body of the first transport member. According to the single plate curl correcting apparatus having such a guide member, the single plate is guided by the guide surface of the guide member, so that it does not come off from the piercing body in a chain, and the curvature radius of the single plate is maintained. The single plate can be guided to the second pressing member.

また、このような単板のカール矯正装置においては、前記第一押圧部材と前記第二押圧部材と前記ガイド部材とが一つの部材で構成されていてもよい。
この場合、簡易な構成により単板のカールを矯正することが可能となる。
Moreover, in such a single-plate curl correction apparatus, the first pressing member, the second pressing member, and the guide member may be configured as a single member.
In this case, the curl of the single plate can be corrected with a simple configuration.

前記第一押圧部材と前記第二押圧部材と前記ガイド部材とが一つの部材となる構成として、例えば、前記ガイド面が円弧形状となる構成のものが考えられる。ガイド面を円弧形状とすればガイド面にエッジ部分が無くなるため、安定した単板の搬送が可能となる。
また、前記第一押圧部材と前記第二押圧部材と前記ガイド部材とが一つの回転可能なローラで構成されているものでもよい。このように構成した場合、単板が搬送されるとローラが従動的に回転しながら単板の押圧とガイドを行うことができるため、より摩擦抵抗を低減することができる。
As a configuration in which the first pressing member, the second pressing member, and the guide member become one member, for example, a configuration in which the guide surface has an arc shape can be considered. If the guide surface has an arc shape, the guide surface has no edge portion, so that a stable single plate can be conveyed.
Further, the first pressing member, the second pressing member, and the guide member may be constituted by a single rotatable roller. When comprised in this way, when a single plate is conveyed, since a roller can rotate and follow a single plate and can guide, a frictional resistance can be reduced more.

また、本発明の単板のカール矯正装置においては、前記第一押圧部材、前記第二押圧部材または前記ガイド部材の少なくとも一つが回転可能なローラで構成されていてもよい。
かかる構成とした場合、摩擦抵抗を低減しつつ、第一押圧部材、第二押圧部材、ガイド部材ごとに第一搬送部材又は第二搬送部材との間隔をそれぞれ調整することができるため、単板の厚みやカールの状態等に応じてより細やかな位置設定が可能となる。
In the single-plate curl correcting device of the present invention, at least one of the first pressing member, the second pressing member, or the guide member may be constituted by a rotatable roller.
In such a configuration, the distance between the first conveying member or the second conveying member can be adjusted for each of the first pressing member, the second pressing member, and the guide member while reducing the frictional resistance. The position can be set more finely according to the thickness of the sheet and the curl state.

また、このような単板のカール矯正装置においては、前記第一搬送部材または前記第二搬送部材の少なくとも一方が、その外周に多数の突刺体を有する回転部材で構成されていてもよい。
この場合、簡単な構成により単板に駆動力を与えて搬送させることができる。
Further, in such a single-plate curl correction device, at least one of the first transport member or the second transport member may be constituted by a rotating member having a large number of piercing bodies on the outer periphery thereof.
In this case, it is possible to convey the single plate by applying a driving force with a simple configuration.

また、このような単板のカール矯正装置において、前記第二搬送部材の前記単板の搬送方向の下流側に、前記第二搬送部材から前記単板を剥がすための第一抜針部材を設けてもよい。
このような第一抜針部材を有するカール矯正装置によれば、単板を第二搬送部材の突刺体から剥がして下流側の排出コンベアへとスムーズに受け渡すことが可能となる。
Further, in such a single plate curl correcting device, a first needle removing member for peeling the single plate from the second transport member is provided downstream of the second transport member in the single plate transport direction. May be.
According to the curl correcting device having such a first needle removal member, it is possible to peel the veneer from the piercing body of the second conveying member and smoothly deliver it to the downstream discharge conveyor.

更に、上記の単板のカール矯正装置において、前記第一搬送部材の前記単板の搬送方向の下流側に、前記第一搬送部材から前記単板を剥がすための第二抜針部材を設けてもよい。
このような第二抜針部材を有するカール矯正装置によれば、第二抜針部材によって第一搬送部材の突刺体から単板が剥がされるため、すでに突刺体から抜針された単板を第二搬送部材によって搬送することとなる。そのため、第二搬送部材の駆動力を利用して第一搬送部材からの抜針を行うよりも単板に突刺体の傷がつきにくくなる。
Further, in the single plate curl correcting apparatus, a second needle removing member for peeling the single plate from the first transport member is provided downstream of the first transport member in the transport direction of the single plate. Also good.
According to the curl correcting apparatus having such a second needle extraction member, the single plate that has already been extracted from the piercing body is removed from the piercing body of the first conveying member by the second needle extraction member. It will be transported by two transport members. Therefore, the puncture body is less likely to be damaged on the veneer than when the needle is pulled out from the first transport member using the driving force of the second transport member.

また、このような単板のカール矯正装置において、前記第一搬送部材と前記第二搬送部材とを前記単板の搬送方向と直交する方向に所定の間隔を隔てて複数配置してもよい。
このような構成とした場合、駆動力を分散して単板に伝えることができるので、単板を壊すことなく平坦に矯正することが可能となる。
Further, in such a single plate curl correcting device, a plurality of the first transport member and the second transport member may be arranged at a predetermined interval in a direction orthogonal to the transport direction of the single plate.
In such a configuration, since the driving force can be distributed and transmitted to the single plate, the flat plate can be corrected without breaking the single plate.

本発明によれば、単板に駆動力を連続的に伝えながら単板を屈曲させることができるので、曲率半径が小さく強いカールの単板であっても搬送の過程で単板を詰まらせることなくスムーズに単板のカールを矯正することができる。   According to the present invention, since the single plate can be bent while continuously transmitting the driving force to the single plate, the single plate is clogged in the course of conveyance even if the single plate has a small curvature radius and a strong curl. The curl of the veneer can be corrected smoothly.

カール矯正装置の右側面図Right side view of curl correction device カール矯正装置の平面図(ローラ及び支持台を除く。)Plan view of curl correction device (excluding rollers and support base) カール矯正装置の正面図(搬入コンベア、排出コンベア、ハガシを除く。)Front view of curl correction device (excluding carry-in conveyor, discharge conveyor, and peeler) 図1のカール矯正装置の押圧部付近の部分拡大図Partial enlarged view of the vicinity of the pressing portion of the curl correction apparatus of FIG. 図1のカール矯正装置のハガシ付近の部分拡大図Partial enlarged view of the curl correction device of FIG. 単板を図1のカール矯正装置の搬入コンベアに載置した状態を示す図The figure which shows the state which mounted the veneer on the carrying-in conveyor of the curl correction apparatus of FIG. 単板の先端が屈曲部に到達する直前の状態を示す図The figure which shows the state just before the front-end | tip of a single plate reaches | attains a bending part 単板の先端が屈曲部を通過するときの状態を示す図The figure which shows a state when the front-end | tip of a single plate passes a bending part 単板の後端が屈曲部を通過した直後の状態を示す図The figure which shows the state immediately after the rear end of the veneer passes the bending part 単板がハガシによって抜針されたときの状態を示す図The figure which shows a state when a single board is pulled out with a peeler 変更例となるカール矯正装置の押圧部付近の部分拡大図Partial enlarged view of the vicinity of the pressing part of the curl correction device as an example of change 変更例となるカール矯正装置の押圧部付近の部分拡大図Partial enlarged view of the vicinity of the pressing part of the curl correction device as an example of change 変更例となるカール矯正装置の押圧部付近の部分拡大図Partial enlarged view of the vicinity of the pressing part of the curl correction device as an example of change 変更例となるカール矯正装置の押圧部付近の部分拡大図Partial enlarged view of the vicinity of the pressing part of the curl correction device as an example of change 変更例となるカール矯正装置の押圧部付近の部分拡大図Partial enlarged view of the vicinity of the pressing part of the curl correction device as an example of change 変更例となるカール矯正装置の押圧部付近の部分拡大図Partial enlarged view of the vicinity of the pressing part of the curl correction device as an example of change 変更例となるカール矯正装置の押圧前の状態を示す図The figure which shows the state before the press of the curl correction apparatus used as a modification example 変更例となるカール矯正装置の押圧時の状態を示す図The figure which shows the state at the time of the press of the curl correction apparatus used as the example of a change 特許文献1に示す従来のカール矯正装置の側面図Side view of conventional curl correction device shown in Patent Document 1 特許文献2に示す従来のカール矯正装置の側面図Side view of a conventional curl correction device shown in Patent Document 2 原木から単板が切削される状態を示す図The figure which shows the state where the veneer is cut from the log 原木から切削された単板を示す図Figure showing a veneer cut from a log

以下、本発明の単板のカール矯正装置1及びその矯正方法の好ましい実施形態を、図面を参照しながら詳細に説明する。   Hereinafter, preferred embodiments of a single-plate curl correcting apparatus 1 and a correcting method thereof according to the present invention will be described in detail with reference to the drawings.

本実施形態における単板のカール矯正装置は、概略で図1乃至図5に示すように構成される。なお、図1に記載された矢印Iの方向から見た装置を正面として説明する。よって図1、図4及び図5は、右側面図(或いはその部分拡大図)、図2は平面図(説明の便宜上、図2においてはローラ60及び支持台61を省略している。)、図3は正面図(説明の便宜上、図3においては搬入コンベア10及び排出コンベア20を省略している。)となる。また、右側面図において、単板は左から右(矢印Iの方向)へ搬送されるものとし、左側を上流、右側を下流として説明する。   The single-plate curl correction apparatus according to this embodiment is schematically configured as shown in FIGS. In addition, the apparatus seen from the direction of the arrow I described in FIG. 1 is demonstrated as a front. Therefore, FIGS. 1, 4 and 5 are right side views (or partially enlarged views thereof), and FIG. 2 is a plan view (for convenience of explanation, the roller 60 and the support base 61 are omitted in FIG. 2). 3 is a front view (for convenience of explanation, the carry-in conveyor 10 and the discharge conveyor 20 are omitted in FIG. 3). In the right side view, a single plate is assumed to be conveyed from left to right (in the direction of arrow I), and the left side will be described as upstream and the right side as downstream.

これらの図面に示されるように、本実施形態のカール矯正装置1は、搬入コンベア10、排出コンベア20、第一突刺ロール30、第二突刺ロール40、ハガシ50、及びローラ60を備えている。
搬入コンベア10は、単板100を載置して第一突刺ロール30へと搬送するためのコンベアであり、排出コンベア20は、第二突刺ロール40によって搬送された単板100を更に下流へと搬送するためのコンベアである。第一突刺ロール30は、単板100を駆動して搬送するための搬送部材であり、その外周に多数の突刺体30aを有する円盤状の回転部材である。第二突刺ロール40は、単板100を駆動して搬送するための搬送部材であり、その外周に多数の突刺体40aを有する円盤状の回転部材である。ハガシ50は、突刺体40aに刺さった単板100を第二突刺ロール40から剥がすための抜針部材である。ローラ60は、第一突刺ロール30と第二突刺ロール40とに向かって単板100を押圧し、更に、第一突刺ロール30から第二突刺ロール40へと単板100を案内する丸棒状の軸部材である。
As shown in these drawings, the curl correction apparatus 1 of this embodiment includes a carry-in conveyor 10, a discharge conveyor 20, a first piercing roll 30, a second piercing roll 40, a peeler 50, and a roller 60.
The carry-in conveyor 10 is a conveyor for placing the veneer 100 and conveying it to the first piercing roll 30, and the discharge conveyor 20 further moves the veneer 100 conveyed by the second piercing roll 40 further downstream. It is a conveyor for conveying. The first piercing roll 30 is a transport member for driving and transporting the veneer 100, and is a disk-shaped rotating member having a large number of piercing bodies 30a on the outer periphery thereof. The 2nd piercing roll 40 is a conveyance member for driving and conveying the veneer 100, and is a disk-shaped rotation member which has many piercing bodies 40a in the outer periphery. The peeler 50 is a needle extraction member for peeling the veneer 100 stuck in the piercing body 40 a from the second piercing roll 40. The roller 60 presses the veneer 100 toward the first piercing roll 30 and the second piercing roll 40, and further has a round bar shape that guides the veneer 100 from the first piercing roll 30 to the second piercing roll 40. It is a shaft member.

図2に示すように、第一突刺ロール30は、搬送方向Iと直交方向に伸びる回転軸31上にその長手方向に所定の間隔を置いて複数配置されている。第二突刺ロール40は、回転軸31と平行に設置された回転軸41上にその長手方向に所定の間隔を置いて複数配置されている。このように第一突刺ロールと第二突刺ロールとは、所定の間隔を置いて複数配置されているので駆動力を分散して単板に伝えることができ、単板を壊すことなく平坦に矯正することができる。なお、第一突刺ロール30及び第二突刺ロール40は、それぞれ一つとしてもよいし、複数でもよく、複数とした場合の間隔は一定であってもよいし、一定でなくてもよい。
回転軸31は軸受け32によって、回転軸41は軸受け42によって回転可能にそれぞれ支持されている。回転軸31及び回転軸41は、ローラーチェーン(図示せず)によって連結されており、一つのモータの駆動によって同時に時計回りに回転する構成となっている。
第一突刺ロール30は単板の搬送方向Iの上流側に、第二突刺ロール40はその下流側に設けられている。また、第一突刺ロール30の下流側の外周縁と、第二突刺ロール40の上流側の外周縁とは、図1に示すように、右側面から見たときに搬送方向において交差するように配置されるとともに、図2及び図3に示すように隣接して設けられており、後述するように、単板100が第一突刺ロール30から第二突刺ロール40へと受け渡される際に、単板100の向きがカールの方向と反対の向きに変わるように配置されている。
As shown in FIG. 2, a plurality of first piercing rolls 30 are arranged on a rotating shaft 31 extending in a direction orthogonal to the conveying direction I at a predetermined interval in the longitudinal direction. A plurality of second piercing rolls 40 are arranged on a rotating shaft 41 installed in parallel with the rotating shaft 31 at a predetermined interval in the longitudinal direction. As described above, the first piercing roll and the second piercing roll are arranged at a predetermined interval so that the driving force can be distributed and transmitted to the single plate, and the flat plate is corrected without breaking the single plate. can do. In addition, the 1st piercing roll 30 and the 2nd piercing roll 40 are good also as one, respectively, and multiple may be sufficient, and the space | interval at the time of setting it as multiple may be constant, and does not need to be constant.
The rotary shaft 31 is rotatably supported by a bearing 32 and the rotary shaft 41 is rotatably supported by a bearing 42. The rotating shaft 31 and the rotating shaft 41 are connected by a roller chain (not shown), and are configured to simultaneously rotate clockwise by driving one motor.
The first piercing roll 30 is provided on the upstream side in the conveying direction I of the single plate, and the second piercing roll 40 is provided on the downstream side thereof. Further, as shown in FIG. 1, the outer peripheral edge on the downstream side of the first piercing roll 30 and the outer peripheral edge on the upstream side of the second piercing roll 40 intersect in the transport direction when viewed from the right side. 2 and 3 are arranged adjacent to each other, and when the veneer 100 is transferred from the first piercing roll 30 to the second piercing roll 40 as described later, It arrange | positions so that the direction of the single plate 100 may change to the direction opposite to the direction of a curl.

ローラ60は、図3及び図4に示すように、回転軸31及び回転軸41と平行となる一本の軸部材で構成されており、図4に示すように、第一単板押圧部60a、第二単板押圧部60b、ガイド面60cを有している。この第一単板押圧部60aは、ローラ60の外周において、第一突刺ロール30の複数の突刺体30aの先端を結んだ仮想の外周線(以下、「第一仮想線X」という。)との間隔が最も狭くなる部分である。第二単板押圧部60bは、ローラ60の外周において、第二突刺ロール40の複数の突刺体40aの先端を結んだ仮想の外周線(以下、「第二仮想線Y」という。)との間隔が最も狭くなる部分である。ガイド面60cは、第一単板押圧部60aから第二単板押圧部60bにかけての円弧部分である。このローラ60は、図4に示すように、第一仮想線Xと第二仮想線Yとが交差する略V字状の谷となる地点Pの上方であって、上流側押圧部分の間隔(第一仮想線Xと第一単板押圧部60aとの間隔)及び下流側押圧部分の間隔(第二仮想線Yと第二単板押圧部60bとの間隔)が、いずれも単板100の厚みより小となる(つまり、狭くなる)位置に配置されている。
また、このローラ60のガイド面60cは、第一単板押圧部60aと第二単板押圧部60bとを結んだ第三仮想線Zから、上述の地点Pに向かって凸となる円弧形状を形成している。
このような構成のローラ60は、支持台61によって回転自在に支持されており、ローラ60と支持台61は回転抵抗を低減すべく滑り軸受け(図示せず)によって支持されている。また、支持台61は、鉛直方向及び搬送方向に調整自在にフレーム(図示せず)に固定されている。
As shown in FIGS. 3 and 4, the roller 60 is composed of a single shaft member that is parallel to the rotary shaft 31 and the rotary shaft 41, and as shown in FIG. 4, the first single plate pressing portion 60a. The second single plate pressing portion 60b and the guide surface 60c are provided. The first single plate pressing portion 60 a is a virtual outer peripheral line (hereinafter referred to as “first virtual line X”) connecting the tips of the plurality of piercing bodies 30 a of the first piercing roll 30 on the outer periphery of the roller 60. This is the part where the interval of is the narrowest. The second single plate pressing portion 60 b is a virtual outer peripheral line (hereinafter referred to as “second virtual line Y”) connecting the tips of the plurality of piercing bodies 40 a of the second piercing roll 40 on the outer periphery of the roller 60. This is the part where the interval is the narrowest. The guide surface 60c is an arc portion extending from the first single plate pressing portion 60a to the second single plate pressing portion 60b. As shown in FIG. 4, the roller 60 is located above a point P that is a substantially V-shaped valley where the first imaginary line X and the second imaginary line Y intersect, and the distance between the upstream pressing portions ( The interval between the first imaginary line X and the first single plate pressing portion 60a) and the interval between the downstream pressing portions (the interval between the second imaginary line Y and the second single plate pressing portion 60b) are both of the single plate 100. It is disposed at a position that is smaller (that is, narrower) than the thickness.
Further, the guide surface 60c of the roller 60 has an arc shape that protrudes from the third imaginary line Z connecting the first single plate pressing portion 60a and the second single plate pressing portion 60b toward the point P described above. Forming.
The roller 60 having such a configuration is rotatably supported by a support base 61, and the roller 60 and the support base 61 are supported by a sliding bearing (not shown) in order to reduce rotational resistance. Further, the support base 61 is fixed to a frame (not shown) so as to be adjustable in the vertical direction and the transport direction.

ハガシ50は、図1に示すように上下を逆にした略L字型の形状の抜針部材であり、その下端部は台43に固定されている。このハガシ50の上端部は、単板当接面50aとなっており、この単板当接面50aは、図5に示すように、第二突刺ロール40の下流側において第二仮想線Yと交差する位置に配置される。また、ハガシ50は、図2に示すように、複数配置された第二突刺ロール40の数に応じて複数配置される。なお、本実施形態では、ハガシ50は、その単板当接面50aが接線F−F(第二突刺ロール40と単板当接面50aとが交差する地点における第二仮想線Yの接線)に対しておよそ150度の鈍角となるように設けられている。   As shown in FIG. 1, the peeler 50 is a substantially L-shaped needle pulling member that is turned upside down, and its lower end is fixed to the base 43. The upper end portion of the peeler 50 is a single plate contact surface 50a, and this single plate contact surface 50a is connected to the second virtual line Y on the downstream side of the second piercing roll 40 as shown in FIG. It is arranged at the crossing position. Further, as shown in FIG. 2, a plurality of peelers 50 are arranged according to the number of second piercing rolls 40 arranged. In the present embodiment, the peeler 50 has a single plate contact surface 50a tangent FF (a tangent of the second virtual line Y at a point where the second piercing roll 40 and the single plate contact surface 50a intersect). The obtuse angle is approximately 150 degrees.

搬入コンベア10は、図1に示すように、上流から下流に向かって駆動する搬送ベルト11及びホイール12により構成される。このコンベア10は、図2に示すように、二つの搬入コンベア10が適宜間隔をあけて並列に配置されている。   As shown in FIG. 1, the carry-in conveyor 10 includes a conveyor belt 11 and a wheel 12 that are driven from upstream to downstream. As shown in FIG. 2, the conveyor 10 includes two carry-in conveyors 10 arranged in parallel at an appropriate interval.

排出コンベア20は、図1に示すように、上流から下流に向かって駆動する搬送ベルト21及びホイール22により構成される。この排出コンベアは、図2に示すように、二つの排出コンベア20が適宜間隔をあけて並列に配置されている。また、本実施形態においては、図5に示すように、搬送ベルト21の単板当接面21aは、ハガシ50における単板当接面50aより低い位置となるよう配置される。   As shown in FIG. 1, the discharge conveyor 20 includes a conveyor belt 21 and a wheel 22 that are driven from upstream to downstream. As shown in FIG. 2, the discharge conveyor has two discharge conveyors 20 arranged in parallel at an appropriate interval. Further, in the present embodiment, as shown in FIG. 5, the single plate contact surface 21 a of the conveyor belt 21 is disposed at a position lower than the single plate contact surface 50 a of the peeler 50.

次に、以上のような構成の本実施形態の単板のカール矯正装置1によって一枚のカールした単板が平坦に矯正されるまでの流れについて説明する。
最初に、第一突刺ロール30及び第二突刺ロール40を右側面から見て時計回りの方向に駆動させ、搬入コンベア10及び排出コンベア20を単板の搬送方向である上流から下流へ向けて走行させておく。第一突刺ロール30、第二突刺ロール40、搬入コンベア10及び排出コンベア20による単板の搬送の速さは、手動で単板を載置する場合は1分間に10〜20mとするのが好ましいが、ベニヤレース(原木切削装置)の搬送ラインに直結する場合は、ベニヤレースの切削速度に従って1分間に90m程度としてもよい。
Next, a flow until a single curled single plate is straightened by the single plate curl correcting apparatus 1 of the present embodiment having the above-described configuration will be described.
First, the first piercing roll 30 and the second piercing roll 40 are driven in the clockwise direction when viewed from the right side, and the carry-in conveyor 10 and the discharge conveyor 20 travel from upstream to downstream, which is the conveying direction of the single plate. Let me. The speed of conveyance of the single plate by the first piercing roll 30, the second piercing roll 40, the carry-in conveyor 10 and the discharge conveyor 20 is preferably 10 to 20 m per minute when the single plate is manually placed. However, when directly connected to the conveying line of the veneer lace (log cutting device), it may be about 90 m per minute according to the cutting speed of the veneer lace.

この状態において、図6に示すように、搬入コンベア10の搬送ベルト11の上に単板100を載置する。その際、単板100は、その繊維方向が搬送方向に直交し、且つ、カールの凸側が上面、裏割れ側が下面となるよう載置される。搬送ベルト11の上に載置された単板100は、搬入コンベア10によって下流側へ搬送されると、単板100の下流側先端から第一突刺ロール30へ受け渡され、時計回りに駆動する第一突刺ロール30の突刺体30aに当接しつつ更に下流側へと搬送される。この際、単板100のカールしている凸状の部分が浮いてしまって突刺体30aに当接しない場合は、手作業又は挿入ガイド(図示せず)を用いて単板100に対し突刺体30aの方向に荷重をかけて突刺体30aに当接させるようにしてもよい。   In this state, as shown in FIG. 6, the single plate 100 is placed on the transport belt 11 of the carry-in conveyor 10. At that time, the veneer 100 is placed such that the fiber direction is perpendicular to the conveying direction, the curled convex side is the upper surface, and the back crack side is the lower surface. When the veneer 100 placed on the conveyor belt 11 is conveyed downstream by the carry-in conveyor 10, it is transferred from the downstream end of the veneer 100 to the first piercing roll 30 and driven clockwise. The first piercing roll 30 is conveyed further downstream while contacting the piercing body 30a. At this time, if the curled convex portion of the veneer 100 floats and does not come into contact with the piercing body 30a, the piercing body with respect to the veneer 100 using manual operation or an insertion guide (not shown). You may make it contact | abut to the piercing body 30a by applying a load in the direction of 30a.

上流側押圧部分の間隔は単板100の厚みよりも小となっているため、図7に示すように、ローラ60へと搬送されてきた単板100は、第一単板押圧部60aに徐々に押圧される。この際、第一突刺ロール30の外周縁には多数の突刺体30aがあるので、単板100は搬送されながら順次突刺体30aに刺着され、第一突刺ロール30の外周に沿って下流へと搬送される。そのため、第一突刺ロール30は空転することなく単板100を滞りなく搬送する。また、ローラ60は、単板100の移動に伴って従動的に反時計回りに回転するため、搬送による摩擦抵抗が低減される。   Since the distance between the upstream pressing portions is smaller than the thickness of the single plate 100, as shown in FIG. 7, the single plate 100 conveyed to the roller 60 gradually reaches the first single plate pressing portion 60a. Pressed. At this time, since there are a large number of piercing bodies 30 a on the outer peripheral edge of the first piercing roll 30, the veneer 100 is sequentially stuck to the piercing body 30 a while being transported, and downstream along the outer periphery of the first piercing roll 30. It is conveyed. Therefore, the first piercing roll 30 conveys the veneer 100 without delay without idling. Further, since the roller 60 is rotated counterclockwise in accordance with the movement of the single plate 100, the frictional resistance due to the conveyance is reduced.

第一突刺ロール30の下流側の外周縁と、第二突刺ロール40の上流側の外周縁とは、上述のように、右側面から見て交差するように配置されており、略V字状の搬送経路を形成する。そのため、図8に示すように、単板100が突刺体30aに刺着された状態で第一突刺ロール30の下流側の地点Pへ搬送されると、第二突刺ロール40の上流側外周に進路を妨げられるため、地点Pにおいて単板100の搬送の向きがカールの方向とは反対の向きに変わる。そして、単板100が第二突刺ロール40に受け渡されると、第二突刺ロール40の駆動によって突刺体30aから順次抜針される。本実施形態では、この地点Pの上方にローラ60が配置されており、このローラ60における第一単板押圧部60aから第二単板押圧部60bの間にはガイド面60cが存在するため、単板100は、このガイド面60cに当接することによって、上流側の単板100が突刺体30aから連鎖的に抜けることがないまま第二単板押圧部60bへと案内されていく。
このように、第一突刺ロール30と第二突刺ロール40とによって連続して駆動される単板100は、第一突刺ロール30と第二突刺ロール40の外周に沿って搬送され、搬送の過程において上面が凸にカールしていた単板100が、略V字状の搬送経路の谷の地点Pにおいてカールの方向とは反対の向きに搬送の角度が変わることによって谷折りに屈曲される。その際、図4に示すように、単板100の下面側の既存の裏割れ100aが助長され、且つ、新たに微細な割れ100bを多数発生させて単板のカールが平坦に矯正される。
なお、第一突刺ロール30によって搬送されてきた単板100が、第二突刺ロール40に受け渡される際に変わる単板の搬送の角度は、単板100のカールの方向と反対の向きに変わる角度であればどのような角度でも良い。
As described above, the outer peripheral edge on the downstream side of the first piercing roll 30 and the outer peripheral edge on the upstream side of the second piercing roll 40 are arranged so as to intersect as viewed from the right side surface, and are substantially V-shaped. The conveyance path is formed. Therefore, as shown in FIG. 8, when the veneer 100 is transported to the point P on the downstream side of the first piercing roll 30 in a state where it is stuck to the piercing body 30 a, Since the path is hindered, at the point P, the direction of conveyance of the veneer 100 changes to a direction opposite to the direction of curl. When the veneer 100 is delivered to the second piercing roll 40, the needles are sequentially pulled out from the piercing body 30a by driving the second piercing roll 40. In the present embodiment, the roller 60 is disposed above the point P, and a guide surface 60c exists between the first single plate pressing portion 60a and the second single plate pressing portion 60b in the roller 60. By contacting the guide surface 60c, the single plate 100 is guided to the second single plate pressing portion 60b without the upstream single plate 100 being removed from the piercing body 30a in a chain manner.
Thus, the veneer 100 continuously driven by the first piercing roll 30 and the second piercing roll 40 is transported along the outer peripheries of the first piercing roll 30 and the second piercing roll 40, and the process of transporting The veneer 100 having a convexly curled upper surface is bent into a valley fold by changing the conveyance angle in a direction opposite to the curl direction at a valley point P of the substantially V-shaped conveyance path. At that time, as shown in FIG. 4, the existing back crack 100 a on the lower surface side of the single plate 100 is promoted, and a number of new fine cracks 100 b are newly generated to flatly correct the curl of the single plate.
In addition, the angle of conveyance of the veneer that changes when the veneer 100 conveyed by the first piercing roll 30 is transferred to the second piercing roll 40 changes to the direction opposite to the curl direction of the veneer 100. Any angle can be used.

下流側押圧部分の間隔は単板100の厚みより小となっているため、第二突刺ロール40へと搬送されてきた単板100は、第二単板押圧部60bに徐々に押圧される。この際、第二突刺ロール40の外周縁には多数の突刺体40aがあるので、単板100は搬送されながら順次突刺体40aに刺着され、図9に示すように、第二突刺ロール40の外周に沿って下流へと搬送される。そのため、第二突刺ロール40は空転することなく滞りなく単板100を搬送する。   Since the distance between the downstream pressing portions is smaller than the thickness of the single plate 100, the single plate 100 conveyed to the second piercing roll 40 is gradually pressed by the second single plate pressing portion 60b. At this time, since there are a large number of piercing bodies 40a on the outer peripheral edge of the second piercing roll 40, the veneer 100 is sequentially stuck to the piercing body 40a while being conveyed, and as shown in FIG. It is conveyed downstream along the outer periphery of. Therefore, the second piercing roll 40 conveys the veneer 100 without delay without idling.

突刺体40aに刺着された状態で第二突刺ロール40の外周に沿って搬送されてきた単板100は、ハガシ50によって再び進路が妨害され、図10に示すように、ハガシ50の単板当接面50aと当接することによって突刺体40aから抜針される。本実施形態では、上述のように、第二仮想線Yの接線F−Fと単板当接面50aとのなす角Qがおよそ150度の鈍角となるよう構成されているため(図5)、単板100を壊すことなく突刺体40aより剥がすことができる。ハガシ50によって突刺体40aより抜針された単板100は、排出コンベア20によって下流方向へと搬送される。   The veneer 100 transported along the outer periphery of the second piercing roll 40 while being stuck to the piercing body 40a is obstructed again by the peeler 50, and as shown in FIG. The needle is removed from the piercing body 40a by coming into contact with the contact surface 50a. In the present embodiment, as described above, the angle Q formed by the tangent line FF of the second virtual line Y and the single plate contact surface 50a is configured to be an obtuse angle of about 150 degrees (FIG. 5). The veneer 40a can be peeled off without breaking the veneer 100. The veneer 100 withdrawn from the piercing body 40 a by the peeler 50 is conveyed downstream by the discharge conveyor 20.

このように、本実施形態の単板のカール矯正装置1によれば、単板100は、ローラ60の第一単板押圧部60aに押圧されて第一突刺ロール30の突刺体30aに刺着され、第一突刺ロール30の駆動によって第二突刺ロール40へと受け渡されるが、その際、単板100の搬送の向きがカールの方向と反対の向きに変わることによって谷折りに屈曲される。そして、単板100は、第二単板押圧部60bに押圧されて第二突刺ロール40の突刺体40aに刺着され、第二突刺ロール40の駆動によって排出コンベア20へ向かって搬送される。そのため、単板100への駆動力を余すことなく二つの突刺ロールによって連続して伝えることができるため、曲率半径が小さく強いカールの単板であっても搬送の過程で単板が詰まることを防止することができる。さらに、単板を谷折りに屈曲させることによって既存の裏割れが助長され、且つ、新たな微細な割れを多数発生させることによって単板のカールを平坦に矯正することができる。   Thus, according to the single plate curl correcting apparatus 1 of the present embodiment, the single plate 100 is pressed by the first single plate pressing portion 60 a of the roller 60 and stuck to the piercing body 30 a of the first piercing roll 30. Then, the first piercing roll 30 is driven and transferred to the second piercing roll 40. At that time, the direction of conveyance of the veneer 100 is changed to the direction opposite to the curling direction, and the first piercing roll 30 is bent into a valley fold. . Then, the veneer 100 is pressed by the second veneer pressing portion 60 b and is stuck to the piercing body 40 a of the second piercing roll 40, and is conveyed toward the discharge conveyor 20 by driving the second piercing roll 40. Therefore, since it can be continuously transmitted by two piercing rolls without leaving a driving force to the veneer 100, even if it is a veneer with a small curvature radius and strong curl, the veneer is clogged in the process of conveyance. Can be prevented. Furthermore, the existing back crack is promoted by bending the veneer into a valley fold, and the curl of the veneer can be corrected flat by generating many new fine cracks.

また、本実施形態のカール矯正装置1は、ガイド面60cを有するので、単板100は、このガイド面60cに当接することによって、上流側の単板100が突刺体30aから連鎖的に抜けることがないまま第二単板押圧部60bへと案内される。そのため、突刺体30aに刺さった状態が地点Pの近くまで維持されることとなり、屈曲部分の曲率半径が大きくなることを防止できる。   Moreover, since the curl correction apparatus 1 according to the present embodiment has the guide surface 60c, the single plate 100 comes into contact with the guide surface 60c, so that the upstream single plate 100 is removed from the piercing body 30a in a chain manner. It is guided to the second veneer pressing part 60b without being present. Therefore, the state stuck in the piercing body 30a is maintained up to the vicinity of the point P, and it is possible to prevent the curvature radius of the bent portion from increasing.

また、本実施形態のカール矯正装置1はハガシ50を有し、第二突刺ロール40によって搬送されてきた単板100は、その下流側でハガシ50の単板当接面50aに当接することによって突刺体40aから抜針される。これにより、単板100をスムーズに排出コンベア20へと搬送することが可能となる。   Moreover, the curl correction apparatus 1 of this embodiment has the peeler 50, and the veneer 100 conveyed by the second piercing roll 40 comes into contact with the veneer contact surface 50a of the peeler 50 on the downstream side. The needle is extracted from the piercing body 40a. Thereby, it becomes possible to convey the veneer 100 smoothly to the discharge conveyor 20.

なお、以上の本実施形態においては、回転軸31及び回転軸41は、ローラーチェーン(図示せず)によって連結されており、一つのモータ(図示せず)の駆動によって二つの回転軸が同時に時計回りに回転する構成となっているが、二つのモータによって回転軸31及び回転軸41を各々駆動させてもよい(図示せず)。このように構成すれば、二つの回転軸の回転速度に速度差を設けることができるため、単板に応じたより細やかな搬送速度の調整が可能となる。   In the above-described embodiment, the rotating shaft 31 and the rotating shaft 41 are connected by a roller chain (not shown), and the two rotating shafts are simultaneously operated by a single motor (not shown). The rotating shaft 31 and the rotating shaft 41 may be driven by two motors (not shown). If comprised in this way, since a speed difference can be provided in the rotational speed of two rotating shafts, it becomes possible to adjust the conveyance speed more finely according to a single plate.

また、第一押圧部材及び第二押圧部材、更にはガイド部材を一つの部材で構成するものの一例として、本実施形態では、搬送方向と直交方向に伸びる一本の軸部材であるローラ60を用いているが、必ずしもローラを用いる必要はなく、例えば、図11に示すように、第一単板押圧部62aから第二単板押圧部62bにかけてのガイド面62cが円弧形状となっている円弧部材62を用いるものであってもよい。
このように、第一押圧部材と第二押圧部材とガイド部材とを一つの部材で構成させれば、簡易な構成によって単板のカールの矯正を実現することができる。また、ガイド面を円弧形状とすればガイド面にエッジ部分が無くなるため安定した単板の搬送が可能となり、さらに、回転可能なローラを用いれば、単板との摩擦をより軽減することができる。
In addition, as an example of the first pressing member, the second pressing member, and the guide member configured as a single member, in the present embodiment, a roller 60 that is a single shaft member extending in a direction orthogonal to the transport direction is used. However, it is not always necessary to use a roller. For example, as shown in FIG. 11, an arc member in which a guide surface 62c from the first single plate pressing portion 62a to the second single plate pressing portion 62b has an arc shape. 62 may be used.
As described above, when the first pressing member, the second pressing member, and the guide member are formed of a single member, it is possible to realize correction of curling of a single plate with a simple configuration. Further, if the guide surface has an arc shape, the edge portion of the guide surface is eliminated, so that a stable single plate can be conveyed. Further, if a rotatable roller is used, friction with the single plate can be further reduced. .

また、本実施形態では、第一押圧部材及び第二押圧部材、更にはガイド部材を一つの部材で構成しているが、それぞれの部材を別に設けてもよい。例えば、図12に示すように、回転自在に支持台66に支持された一本の第一押圧ローラ63を第一突刺ロール30側に配置し、回転自在に支持台66に支持された一本の第二押圧ローラ64を第二突刺ロール40側に配置し、回転自在に支持台66に支持された一本のガイドローラ65を第一押圧ローラ63と第二押圧ローラ64との間に設ける構成としてもよい。かかる構成によれば、上流側押圧部分の間隔、下流側押圧部分の間隔、地点Pとガイド部材との間隔をそれぞれ別に調整することが可能となるため、単板に応じたより細やかな設定が可能となる。   Moreover, in this embodiment, although the 1st press member, the 2nd press member, and also the guide member are comprised by one member, you may provide each member separately. For example, as shown in FIG. 12, one first pressing roller 63 that is rotatably supported by a support base 66 is disposed on the first piercing roll 30 side, and one that is rotatably supported by the support base 66. The second pressing roller 64 is disposed on the second piercing roll 40 side, and a single guide roller 65 rotatably supported by the support base 66 is provided between the first pressing roller 63 and the second pressing roller 64. It is good also as a structure. According to such a configuration, it is possible to adjust the interval between the upstream pressing portion, the interval between the downstream pressing portion, and the interval between the point P and the guide member separately, so that more detailed setting according to the single plate is possible. It becomes.

また、本実施形態では、第一搬送部材として第一突刺ロール30を、第二搬送部材として第二突刺ロール40を用いており、第一突刺ロール30の下流側の外周縁と、第二突刺ロール40上流側の外周縁とは、搬送方向において交差する部分を有するように配置されており、第一突刺ロール30と第二突刺ロール40とによって単板を連続的に搬送する連続搬送部を構成しているが、このような連続搬送部となるような構成であれば必ずしも突刺ロールを用いた構成でなくともよく、いずれか一方、若しくは両方が、外縁に多数の突刺体を有する植え針チェーンなどの搬送部材であってもよい。すなわち、図13に示すように、第二突刺ロール40に代えて、多数の突刺体45aを有する植え針チェーン45を用いた構成、または、図14に示すように、第一突刺ロール30に代えて、多数の突刺体35aを有する植え針チェーン35を用いた構成、更には、図15に示すように、第一突刺ロール30に代えて植え針チェーン35を用いると共に、第二突刺ロール40に代えて植え針チェーン45を用いた構成でも実施可能である。   In the present embodiment, the first piercing roll 30 is used as the first conveying member, and the second piercing roll 40 is used as the second conveying member. The outer peripheral edge on the upstream side of the roll 40 is disposed so as to have a portion that intersects in the transport direction, and a continuous transport unit that transports a single plate continuously by the first piercing roll 30 and the second piercing roll 40. Although it is configured, it is not always necessary to use a piercing roll as long as it is such a continuous conveyance unit, either one or both of which have a large number of piercing bodies on the outer edge It may be a conveying member such as a chain. That is, as shown in FIG. 13, instead of the second piercing roll 40, a configuration using a planting needle chain 45 having a large number of piercing bodies 45a, or as shown in FIG. 14, instead of the first piercing roll 30 In addition, a configuration using a planting needle chain 35 having a large number of piercing bodies 35a, and further using a planting needle chain 35 in place of the first piercing roll 30 as shown in FIG. Instead, a configuration using the planting needle chain 45 can also be implemented.

また、図16に示すように、第一突刺ロール30の単板搬送方向の下流側の位置に抜針部材としてハガシ51を設置してもよい。このような構成とした場合、突刺体30aに刺着された状態で第一突刺ロール30の外周に沿って搬送されてきた単板100は、ハガシ51によって進路を妨げられることとなるため、ハガシ51の単板当接面51aと当接することよって突刺体30aから剥がされた後に、第二突刺ロール40へと搬送される。このように、単板100を突刺体30aから剥がす作業を第二突刺ロール40に行わせることなくハガシ51に行わせる構成とすれば、突刺体30aから単板を抜針する工程を第二突刺ロール40による搬送の工程から切り離すこととなるため、より小さな駆動力でスムーズに単板のカールを矯正することが可能となる。   Moreover, as shown in FIG. 16, you may install the peeler 51 as a needle extraction member in the downstream position of the 1st stab roll 30 in the single plate conveyance direction. In such a configuration, the veneer 100 that has been transported along the outer periphery of the first piercing roll 30 while being stuck to the piercing body 30a is obstructed by the peeler 51. After being peeled from the piercing body 30a by abutting on the single plate abutting surface 51a of 51, it is conveyed to the second piercing roll 40. Thus, if it is set as the structure which makes the peeler 51 perform the operation | work which peels the single plate 100 from the piercing body 30a, without making the 2nd piercing roll 40 perform, the process of extracting a single plate from the piercing body 30a will be carried out. Since it is separated from the transporting process by the roll 40, it becomes possible to correct the curl of the single plate smoothly with a smaller driving force.

また、支持台61はフレーム(図示せず)に調整自在に固定されているが、支持台61を流体シリンダ62を介してフレーム(図示せず)に取付け、ローラ60の上下動が自在となる構成としてもよい。ベニヤレース(原木切削装置)によって単板を切削する場合、切削が進んで原木の中心に近づくにつれて原木の直径は小さくなるため、切削された単板は、原木の中心部に近い部分ほど曲率半径も小さく強いカールとなる。そのため、このような構成とすれば、曲率半径が大きい緩やかなカール部分が搬送されている間は、図17に示すように、流体シリンダ62によって支持台61を上昇位置に待機させておき、曲率半径が小さい強いカール部分が搬送されてきたときのみ、図18に示すように、流体シリンダ62によって支持台61を所定の下降位置まで下降させて単板を屈曲させることができる。そのため、カールの矯正が必要である部分のみを効率よく矯正することができ、第一突刺ロール30、第二突刺ロール40、ローラ60などの部品の摩耗を軽減することができる。   The support base 61 is fixed to a frame (not shown) in an adjustable manner. However, the support base 61 is attached to the frame (not shown) via a fluid cylinder 62 so that the roller 60 can be moved up and down. It is good also as a structure. When cutting a veneer with a veneer lace (raw wood cutting device), the diameter of the raw wood decreases as the cutting progresses and approaches the center of the wood, so the cut radius of the cut veneer is closer to the center of the wood Is also a small and strong curl. Therefore, with such a configuration, while a gentle curled portion having a large curvature radius is being conveyed, as shown in FIG. Only when a strong curl portion having a small radius has been conveyed, the single plate can be bent by lowering the support base 61 to a predetermined lowered position by the fluid cylinder 62, as shown in FIG. Therefore, it is possible to efficiently correct only a portion where curl correction is necessary, and to reduce wear of components such as the first piercing roll 30, the second piercing roll 40, and the roller 60.

なお、本実施形態では、第一突刺ロール30の下流側の外周縁と、第二突刺ロール40の上流側の外周縁とが、右側面から見た場合、搬送方向において交差するように配置されているものとして説明したが、第一仮想線Xと第二仮想線Yとが搬送方向において交差するように配置されているものであれば、互いの外周縁同士が交差するものでなくてもよい。   In this embodiment, the outer peripheral edge on the downstream side of the first piercing roll 30 and the outer peripheral edge on the upstream side of the second piercing roll 40 are arranged so as to intersect in the transport direction when viewed from the right side. As long as the first imaginary line X and the second imaginary line Y are arranged so as to intersect with each other in the transport direction, the outer peripheral edges may not intersect with each other. Good.

また、本実施形態では、単板のカール矯正装置がガイド部材を有するものとして説明したが、このようなガイド部材を有しないものであってもよい。   In the present embodiment, the single-plate curl correction apparatus has been described as having a guide member. However, the single-plate curl correction apparatus may not have such a guide member.

また、本実施形態では、第二仮想線Yの接線F−Fと単板当接面50aとのなす角Qは150度に設定しているが、突刺体40から単板100を剥がすことができる角度であれば異なる角度でもよい。ただし、単板100を壊すことなく突刺体40aから剥がすためには120度から170度の鈍角とすることが好ましい。   In this embodiment, the angle Q formed between the tangent line FF of the second virtual line Y and the single plate contact surface 50a is set to 150 degrees, but the single plate 100 can be peeled off from the piercing body 40. Different angles may be used as long as they are possible. However, in order to peel off the veneer 40a without breaking the veneer 100, an obtuse angle of 120 to 170 degrees is preferable.

また、本実施形態では、二つの搬入コンベア10が適宜間隔をあけて並列に配置されているものとして説明したが、これに限られるものではなく、一つの搬入コンベアでもよく、または三つ以上の搬入コンベアを配置してもよい。   Moreover, in this embodiment, although demonstrated that the two carrying-in conveyors 10 were arrange | positioned in parallel at appropriate intervals, it is not restricted to this, One carrying-in conveyor may be sufficient, or three or more A carry-in conveyor may be arranged.

さらに、本実施形態では、二つの排出コンベア20が適宜間隔をあけて並列に配置されているものとして説明したが、これに限られるものではなく、一つの排出コンベアでもよく、または三つ以上の排出コンベアを配置してもよい。   Further, in the present embodiment, the two discharge conveyors 20 have been described as being arranged in parallel at an appropriate interval. However, the present invention is not limited to this, and one discharge conveyor or three or more discharge conveyors may be used. A discharge conveyor may be arranged.

1,200,300・・単板のカール矯正装置、10・・搬入コンベア、11,21・・搬送ベルト、12,22・・ホイール、20・・排出コンベア、30・・第一突刺ロール(第一搬送部材)、30a,35a,40a,45a・・突刺体、31,41・・回転軸、32,42・・軸受け、40・・第二突刺ロール(第二搬送部材)、43・・台、50・・ハガシ(第一抜針部材)、50a,51a・・単板当接面、51・・ハガシ(第二抜針部材)、60・・ローラ(第一押圧部材、第二押圧部材、ガイド部材)、60a,62a・・第一単板押圧部(第一押圧部材)、60b,62b・・第二単板押圧部(第二押圧部材)、60c,62c・・ガイド面(ガイド部材)、61・・支持台、62・・円弧部材、63・・第一押圧ローラ(第一押圧部材)、64・・第二押圧ローラ(第二押圧部材)、65・・ガイドローラ(ガイド部材)、100・・単板、101・・原木、102・・切削刃物、201・・駆動ローラ、 202a,202b・・従動ローラ、215,315・・屈曲部、301・・植針チェーン、302・・抜針部材、303・・水平支持部材、304a,304b・・押圧ローラ。   1,200,300 ··· Single-plate curl straightening device, ··· 10-in conveyor, 11, 21 ·· conveyor belt, 12, 22 ·· wheel, 20 ·· discharge conveyor, 30 ·· first piercing roll 1 conveying member), 30a, 35a, 40a, 45a, ... piercing body, 31, 41, rotation shaft, 32, 42, bearing, 40, second piercing roll (second conveying member), 43, base , 50 ··· Stripe (first pulling member), 50a, 51a ·· Single plate contact surface, 51 ·· Stripe (second pulling member), 60 · · Roller (first pressing member, second pressing member) , Guide member), 60a, 62a,... First single plate pressing portion (first pressing member), 60b, 62b,. Second single plate pressing portion (second pressing member), 60c, 62c,. Member), 61 .. support base, 62 .. arc member, 63 .. first pressing roller First pressing member), 64 ··· Second pressing roller (second pressing member), 65 ·· Guide roller (guide member), 100 · · Single plate, 101 · · Raw wood, 102 · · Cutting blade, 201 · · · Drive roller 202a, 202b ... driven roller, 215, 315 ... bent portion 301 ... needle chain, 302 ... withdrawal member, 303 ... horizontal support member, 304a, 304b ... pressure roller.

Claims (11)

単板を搬送しながら前記単板のカールを平坦に矯正する装置であって、
前記単板を駆動して搬送するための二つの搬送部材であって、前記単板の搬送方向の上流側に位置する第一搬送部材及び前記単板の搬送方向の下流側に位置する第二搬送部材と、
前記単板を前記第一搬送部材に押圧するための第一押圧部材と、
前記単板を前記第二搬送部材に押圧するための第二押圧部材と、を有しており、
前記第一搬送部材及び前記第二搬送部材はその外縁に多数の突刺体を有しており、前記第一搬送部材の前記多数の突刺体の先端を結んだ第一仮想線の一部と、前記第二搬送部材の前記多数の突刺体の先端を結んだ第二仮想線の一部が、搬送方向において交差する部分を有し、且つ、前記第一搬送部材により搬送されてきた前記単板が前記第二搬送部材に受け渡された際に、前記単板の搬送の向きが前記単板のカールの方向と反対の向きに変わるように配置されており、
前記第一押圧部材は、前記第一仮想線と、前記第一押圧部材のうち前記第一仮想線との距離が最も近い部分である第一単板押圧部との間隔が、前記単板の厚みよりも小となる位置に配置されており、
前記第二押圧部材は、前記第二仮想線と、前記第二押圧部材のうち前記第二仮想線との距離が最も近い部分である第二単板押圧部との間隔が、前記単板の厚みよりも小となる位置に配置されている、
単板のカール矯正装置。
A device for flatly correcting the curl of the single plate while conveying the single plate,
Two conveying members for driving and conveying the veneer, a first conveying member located upstream in the conveying direction of the veneer and a second located downstream in the conveying direction of the veneer A conveying member;
A first pressing member for pressing the single plate against the first conveying member;
A second pressing member for pressing the veneer against the second conveying member,
The first transport member and the second transport member have a large number of piercing bodies on the outer edge thereof, and a part of a first imaginary line that connects tips of the numerous piercing bodies of the first transport member; A part of the second imaginary line connecting the tips of the plurality of piercing bodies of the second conveying member has a portion intersecting in the conveying direction, and the single plate has been conveyed by the first conveying member Is disposed so that the direction of conveyance of the veneer changes to the direction opposite to the direction of curl of the veneer when being transferred to the second conveyance member,
The first pressing member has an interval between the first imaginary line and the first single plate pressing portion that is the portion of the first pressing member that is the closest to the first imaginary line. It is placed at a position that is smaller than the thickness,
The second pressing member has an interval between the second imaginary line and a second single plate pressing portion that is the closest part of the second pressing member to the second imaginary line. It is arranged at a position that is smaller than the thickness,
Single plate curl correction device.
前記第一押圧部材から前記第二押圧部材に向かって前記単板を案内するガイド面を有するガイド部材を更に有しており、
前記ガイド部材は、前記第一押圧部材と前記第二押圧部材との間に配置され、前記ガイド部材の前記ガイド面は、前記第一単板押圧部と前記第二単板押圧部とを結んだ第三仮想線から、前記第一仮想線と前記第二仮想線とが交差する点に向かって凸状に形成されている、
請求項1記載のカール矯正装置。
A guide member having a guide surface for guiding the single plate from the first pressing member toward the second pressing member;
The guide member is disposed between the first pressing member and the second pressing member, and the guide surface of the guide member connects the first single plate pressing portion and the second single plate pressing portion. From the third imaginary line, it is formed in a convex shape toward the point where the first imaginary line and the second imaginary line intersect,
The curl correction apparatus according to claim 1.
前記第一押圧部材と前記第二押圧部材と前記ガイド部材とが一つの部材で構成されている、
請求項2記載の単板のカール矯正装置。
The first pressing member, the second pressing member, and the guide member are composed of one member.
The single plate curl correction apparatus according to claim 2.
前記ガイド面が円弧形状となっている、
請求項2または3記載の単板のカール矯正装置。
The guide surface has an arc shape,
The single-plate curl correction apparatus according to claim 2 or 3.
前記第一押圧部材と前記第二押圧部材と前記ガイド部材とが一つの回転可能なローラで構成されている、
請求項3記載の単板のカール矯正装置。
The first pressing member, the second pressing member, and the guide member are composed of one rotatable roller.
The single-plate curl correction apparatus according to claim 3.
前記第一押圧部材、前記第二押圧部材または前記ガイド部材の少なくとも一つが回転可能なローラで構成されている、
請求項2記載の単板のカール矯正装置。
At least one of the first pressing member, the second pressing member or the guide member is constituted by a rotatable roller.
The single plate curl correction apparatus according to claim 2.
前記第一搬送部材または前記第二搬送部材の少なくとも一方が、その外周に多数の突刺体を有する回転部材で構成されている、
請求項1乃至6のいずれかの項記載の単板のカール矯正装置。
At least one of the first transport member or the second transport member is composed of a rotating member having a large number of piercing bodies on its outer periphery.
The single-plate curl correction apparatus according to any one of claims 1 to 6.
前記第二搬送部材から前記単板を剥がすための第一抜針部材を更に有しており、
前記第一抜針部材は、前記第二搬送部材の前記単板の搬送方向の下流側に設けられている、
請求項1乃至7のいずれかの項記載の単板のカール矯正装置。
A first needle removing member for peeling the veneer from the second conveying member;
The first needle removal member is provided on the downstream side of the transport direction of the single plate of the second transport member,
The single-plate curl correcting apparatus according to any one of claims 1 to 7.
前記第一搬送部材から前記単板を剥がすための第二抜針部材を更に有しており、
前記第二抜針部材は、前記第一搬送部材の前記単板の搬送方向の下流側に設けられている、
請求項8記載の単板のカール矯正装置。
A second needle-extracting member for peeling the veneer from the first conveying member;
The second needle withdrawal member is provided on the downstream side of the first conveying member in the conveying direction of the single plate,
The single-plate curl correction apparatus according to claim 8.
前記第一搬送部材と前記第二搬送部材とが、前記単板の搬送方向と直交する方向に所定の間隔を隔てて複数配置されている、
請求項1乃至9のいずれかの項記載の単板のカール矯正装置。
A plurality of the first transport member and the second transport member are arranged at a predetermined interval in a direction orthogonal to the transport direction of the single plate.
The single-plate curl correction apparatus according to any one of claims 1 to 9.
その外縁に多数の突刺体を有する第一搬送部材及び第二搬送部材と、
前記第一搬送部材の前記多数の突刺体の先端を結んだ第一仮想線と、前記第一仮想線との距離が最も近い部分である第一単板押圧部との間隔が、前記単板の厚みよりも小となる位置に配置されている第一押圧部材と、
前記第二搬送部材の前記多数の突刺体の先端を結んだ第二仮想線と、前記第二仮想線との距離が最も近い部分である第二単板押圧部との間隔が、前記単板の厚みよりも小となる位置に配置されている第二押圧部材と、
を有する単板のカール矯正装置において実行される方法であって、
前記単板を前記第一搬送部材により駆動して搬送し、
前記第一押圧部材により、前記単板を前記第一搬送部材に押圧し、
前記第一搬送部材により搬送されてきた前記単板を前記第二搬送部材に受け渡すとともに、前記単板の搬送の向きを前記単板のカールの方向と反対の向きに変化させ、
前記単板を前記第二搬送部材に押圧し、前記第二搬送部材により搬送する、
単板のカール矯正方法。
A first transport member and a second transport member having a number of piercing bodies on the outer edge;
The distance between the first imaginary line connecting the tips of the plurality of piercing bodies of the first conveying member and the first single plate pressing portion which is the closest portion to the first imaginary line is the single plate. A first pressing member disposed at a position smaller than the thickness of
The interval between the second imaginary line connecting the tips of the plurality of piercing bodies of the second conveying member and the second veneer pressing portion which is the closest distance between the second imaginary line is the single plate. A second pressing member arranged at a position smaller than the thickness of
A method performed in a single-plate curl straightening device having:
The single plate is driven and transported by the first transport member,
The first pressing member presses the single plate against the first conveying member,
While passing the single plate that has been transported by the first transport member to the second transport member, changing the direction of transport of the single plate to a direction opposite to the direction of curl of the single plate,
The single plate is pressed against the second transport member and transported by the second transport member.
Single plate curl correction method.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4219060A (en) * 1978-07-14 1980-08-26 Meinan Machinery Works, Inc. Method of and apparatus for tenderizing veneer
JPS57178702A (en) * 1981-04-27 1982-11-04 Meinan Machinery Works Device for treating veneer
JPS61120702A (en) * 1984-11-15 1986-06-07 武藤 弘己 Tender rising method and tender riser for veneer for veneer flitch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4219060A (en) * 1978-07-14 1980-08-26 Meinan Machinery Works, Inc. Method of and apparatus for tenderizing veneer
JPS57178702A (en) * 1981-04-27 1982-11-04 Meinan Machinery Works Device for treating veneer
JPS61120702A (en) * 1984-11-15 1986-06-07 武藤 弘己 Tender rising method and tender riser for veneer for veneer flitch

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