JP5613003B2 - Supplying raw wood to veneer lace - Google Patents

Supplying raw wood to veneer lace Download PDF

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JP5613003B2
JP5613003B2 JP2010231384A JP2010231384A JP5613003B2 JP 5613003 B2 JP5613003 B2 JP 5613003B2 JP 2010231384 A JP2010231384 A JP 2010231384A JP 2010231384 A JP2010231384 A JP 2010231384A JP 5613003 B2 JP5613003 B2 JP 5613003B2
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gripping
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JP2012081688A (en
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一 矢吹
一 矢吹
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Meinan Machinery Works Inc
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Description

本発明は、ベニヤレースへ原木を供給する方法の改良に関するものである。   The present invention relates to an improvement in a method for supplying raw wood to a veneer lace.

従来、ベニヤレースへ原木を供給するに際し、ベニヤレースの前位に、適宜の構成で成る原木芯出し装置と原木供給装置を配設し、各原木の性状に応じて、所望の回転芯（回転中心軸）を個別に定めると共に、該所望の回転芯とベニヤレースのスピンドルの中心軸とを一致させるよう、個々の原木の姿勢（三次元的な位置）を調整して供給することは一般的に行われており、実用に供されている原木芯出し装置の形式は様々であるが、本発明に於ては、例えば引用文献１・引用文献２に開示される如く、仮に定めた原木の仮軸芯を、左右一対の仮芯用のスピンドルの中心軸に合わせるようにして原木を挟持し、前記仮軸芯を中心として、原木を少なくとも一回転させると共に、適宜の外周検知機構を用いて、原木の外周形状を検知し、次いで、検知した外周形状を、所望の回転芯を求める際の主要な条件として採用して、所望の回転芯を算定し、更に、該算定した原木の回転芯が、原木供給装置の原木把持機構を構成する部材である、左右一対の把持部材の伸縮方向に対して平行状となる状態に至るまで、挟持した原木を追加的に回転させてから、回転を停止させることによって、原木供給装置による原木の供給を可能化する形式の原木芯出し装置を対象とする。   Conventionally, when supplying raw wood to a veneer lace, a raw wood centering device and a raw wood supply device having an appropriate configuration are arranged in front of the veneer lace, and a desired rotation core (rotation) is provided according to the properties of each raw wood. It is common to adjust the posture (three-dimensional position) of each individual wood so that the desired center of rotation and the center axis of the veneer spindle are aligned with each other. There are various types of log centering devices that are put to practical use, but in the present invention, as disclosed in, for example, Cited Document 1 and Cited Document 2, temporarily defined log wood is used. Hold the log so that the temporary axis is aligned with the central axis of the pair of left and right temporary core spindles, rotate the log at least once around the temporary axis, and use an appropriate outer periphery detection mechanism. Detect the outer shape of the log, then The detected outer periphery shape is adopted as a main condition for obtaining a desired rotational core, and the desired rotational core is calculated. Further, the calculated rotational core of the raw wood constitutes the raw wood gripping mechanism of the raw wood supply device By further rotating the sandwiched raw wood until it reaches a state parallel to the expansion / contraction direction of the pair of left and right gripping members, which is a member to The target is a log centering device of a type that enables supply.

而して、斯様な形式の原木芯出し装置を用いて、算定した原木の回転芯が、原木供給装置の原木把持機構を構成する左右一対の把持部材の伸縮方向に対して平行状となる状態に至るまで、挟持した原木を追加的に回転させてから、回転を停止させれば、その後は、前記原木把持機構の左右一対の把持部材を、必要に応じて、算定した原木の回転芯に適応する位置へ変位させてから、相互に接近させるよう作動させ、各把持部材の先端部に付設した把持爪によって原木を把持し直すと共に、仮芯用のスピンドルによる原木の挟持を開放し、更に、把持した原木をベニヤレースのスピンドルに対応する位置へ移送する途上に於て、各把持部材の長さ（原木把持機構を構成する他の部材に対する相対的な長さ）を、左右各別に適宜寸法だけ伸長又は縮小させることによって、原木の回転芯を、ベニヤレースのスピンドルの回転中心に一致させるように供給することができるが、原木の姿勢を調整する工程の一部を、移送途上に於て実施することから、総じて、能率的な原木供給が行い得るので有益であり、既に、多数の装置が実用に供されている。   Thus, by using such a type of log centering device, the calculated rotation center of the log is parallel to the expansion and contraction direction of the pair of left and right gripping members constituting the log gripping mechanism of the log supply device. If the rotation of the sandwiched log is additionally stopped until the state is reached, then the pair of left and right gripping members of the log gripping mechanism is replaced with the calculated rotation center of the log as necessary. Are moved to a position that adapts to each other, and are operated so as to approach each other, and the gripping claws attached to the tip of each gripping member are gripped again, and the holding of the logs by the spindle for the temporary core is released, Further, in the course of transferring the grasped log to the position corresponding to the spindle of the veneer lace, the length of each grip member (the relative length with respect to the other members constituting the log gripping mechanism) Elongate as appropriate or By reducing the size, the rotation center of the raw wood can be supplied so as to coincide with the center of rotation of the spindle of the veneer race. However, a part of the process of adjusting the posture of the raw wood is carried out during the transfer. Therefore, in general, it is beneficial because an efficient log supply can be performed, and many devices have already been put into practical use.

ところで、述上の如く各把持部材の先端部に付設した把持爪によって、原木を把持した場合には、把持した原木を、仮芯用のスピンドルに対応する位置から移送し始める際と、ベニヤレースのスピンドルに対応する位置へ移送し終えて、移送を停止する際とに、原木の自重に起因する慣性力が、把持爪が介入する原木の局部へ集中的に作用するので、原木の把持姿勢が歪んで供給位置の精度を悪化させる虞があり、而も、原木の木口面側（端面側）から見た場合に、原木の重心の所在位置と、把持爪が介入する原木の局部との間に隔たりがあると、前記慣性力に、更にモーメントの作用が加わって、原木の把持姿勢の歪を拡大させ、供給位置の精度を一段と悪化させる虞が生じることになる。   By the way, when the log is gripped by the gripping claws attached to the tip of each gripping member as described above, when the gripped log starts to be transferred from the position corresponding to the temporary spindle, the veneer race When the transfer is stopped after the transfer to the position corresponding to the spindle, the inertial force due to the weight of the raw wood acts intensively on the local part of the raw wood where the gripping claws intervene. May be distorted and deteriorate the accuracy of the supply position. When viewed from the wood mouth side (end face side) of the raw wood, the location of the center of gravity of the raw wood and the local part of the raw wood where the gripping claws intervene If there is a gap, a moment effect is further added to the inertial force, and the distortion of the gripping posture of the raw wood may be enlarged to further deteriorate the accuracy of the supply position.

従って、机上論的には、原木の木口面側から見た場合の重心の所在位置を、把持部材の把持爪によって把持するのが良策であると言え、不定形（不均質）な原木の重心の所在位置を、正確に算出することは、技術的に極めて困難であるものの、通常、原木の重心は、前記回転芯の長さ方向の中央部近辺に在ることが実験的にも確認されているから、原木の両木口面に於ける前記回転芯の左右の末端部乃至は該末端部近辺の部位に、各把持部材の把持爪を介入させて、原木を把持することができれば望ましいことになるが、あいにく、原木の回転芯を、ベニヤレースのスピンドルに一致させて把持する場合に、該スピンドルと把持部材の先端部との衝突を回避する条件は、必要不可欠な絶対条件であるから、原木の木口面側から見た場合の重心の所在位置乃至は重心の所在位置の近辺を、把持爪によって把持することは事実上不可能である。   Therefore, from a theoretical point of view, it can be said that it is a good idea to grasp the position of the center of gravity when viewed from the wood mouth side of the raw wood with the gripping claws of the grasping member, and the center of gravity of the irregular shaped (non-uniform) raw wood Although it is extremely difficult technically to calculate the location of the center of the log, it has been experimentally confirmed that the center of gravity of the log is usually near the center of the length of the rotating core. Therefore, it is desirable that the grasping claw of each grasping member can intervene at the left and right end portions of the rotary core on the both ends of the log or the portions near the end portions to grasp the log. Unfortunately, the condition to avoid collision between the spindle and the tip of the gripping member is an indispensable absolute condition when gripping the rotating core of the log with the veneer spindle. , Center of gravity when viewed from the front side of the log The vicinity of the location to the location of the center of gravity, it is virtually impossible for gripping by the gripping claws.

そこで、本出願人は、先に一案として「ベニヤレースへの原木の供給方法」（特願２０１０−２０６３７３）に開示する如く、ベニヤレースの前位に、仮芯用のスピンドルを備えた原木芯出し装置と、先端部に把持爪を具備した伸縮自在な把持部材を有する原木把持機構を備えた原木供給装置とを配設し、予め原木の所望の回転芯を個別に定めると共に、該所望の回転芯とベニヤレースのスピンドルの中心軸とを一致させるよう、個々の原木の姿勢を調整して供給するに際し、少なくとも垂直方向乃至は垂直方向の成分を含む上下方向の調整については、前記仮芯用のスピンドルで挟持した原木を、前記把持部材で把持し直してから、ベニヤレースのスピンドルの位置へ供給するまでの間の適当な時期に、前記把持部材を適宜伸縮させて姿勢を調整する原木の供給方法であって、仮芯用のスピンドルで挟持した原木を、把持部材で把持し直す際には、各原木の両端面に於ける所望の回転芯の末端部から、ベニヤレースのスピンドルの半径に最少安全保障間隔を加算して算出される、所定距離だけ離れた部位に把持爪を介入させて把持し、供給することを特徴とするベニヤレースへの原木の供給方法を提案し、供給位置の精度の悪化防止を図った。   Therefore, as disclosed in the “Method of supplying raw wood to veneer lace” (Japanese Patent Application No. 2010-206373), the present applicant previously proposed a raw wood provided with a spindle for temporary lead at the front of the veneer lace. A centering device and a log supply device having a log gripping mechanism having a telescopic gripping member having a gripping claw at a tip end portion thereof are arranged, and a desired rotation core of the log is determined individually in advance and the desired When adjusting and supplying the position of each individual log so that the rotation center of the veneer and the center axis of the spindle of the veneer race coincide with each other, the provisional adjustment for at least the vertical direction or the vertical direction including the vertical component is performed. The gripping member is appropriately extended and contracted at an appropriate time from when the raw wood sandwiched by the core spindle is gripped again by the gripping member to when it is supplied to the position of the veneer spindle. A method for supplying raw wood to be adjusted, and when a raw wood sandwiched by a spindle for a temporary core is re-gripped by a gripping member, a veneer lace is formed from the end of a desired rotary core on each end face of each raw wood. A method for supplying raw wood to a veneer race, characterized in that it is calculated by adding the minimum security interval to the spindle radius and gripping and supplying gripping claws at a site separated by a predetermined distance. Therefore, the deterioration of the accuracy of the supply position was prevented.

特許第３６７６５４６号公報Japanese Patent No. 3676546 特許第４２８２０３９号公報Japanese Patent No. 4282039

前記本出願人が提案した発明よれば、ベニヤレースのスピンドルと把持部材の先端部との衝突を確実に回避する制約条件下に於て、原木の自重の慣性力に伴うモーメントの作用が、比較的少なくなる部位に、把持爪を介入させて原木を把持するので、把持姿勢の歪の発生を抑止するのに有効であり、相応の成果を挙げることができたが、先述の如く、算定した原木の回転芯が、原木供給装置の原木把持機構を構成する左右一対の把持部材の伸縮方向に対して平行状となる状態に至るまで、単純に挟持した原木を追加的に回転させてから、回転を停止させ、各把持部材の先端部に付設した把持爪によって原木を把持し直す把持態様を採るだけでは、常に適切な態様を採り得るとは限らず、更に一段と改良を施す余地のあることが、本発明の開発過程に於て判明した。   According to the invention proposed by the present applicant, the effect of the moment due to the inertial force of the weight of the raw wood is compared under the constraint condition that reliably avoids the collision between the spindle of the veneer race and the tip of the gripping member. Grasping the log with the gripping nails intervened in the area that is less likely to be effective, it was effective in suppressing the occurrence of distortion in the gripping posture, and was able to produce corresponding results, but as calculated above, it was calculated Until the rotation core of the raw wood is in a state parallel to the expansion / contraction direction of the pair of left and right gripping members constituting the raw wood gripping mechanism of the raw wood supply device, after additionally rotating the raw wood sandwiched, Just taking a gripping mode that stops rotation and re-grips the log with a gripping claw attached to the tip of each gripping member does not always take an appropriate mode, and there is room for further improvement. However, the development of the present invention It was found At a degree.

即ち、後に改めて詳述するが、例えば図６に例示する如く、原木芯出し装置Ａの一部を構成する左右一対の仮芯用のスピンドル３・３ａによって挟持した原木Ｇ１を図示矢印方向に一回転させ、一方（右側）の木口面に於ける末端部がｎ１であり、他方（左側）の木口面に於ける末端部がｎ２である、回転芯Ｎ１を算定した場合に、該回転芯Ｎ１が、原木供給装置の原木把持機構ｂ１を構成する左右一対の把持部材１２の伸縮方向に対して平行状となる状態は、図７及び図８に例示する如く、原木Ｇ１の仮軸芯Ｍ１（及び仮芯用のスピンドルの中心軸ｊ）を中心（定点）として対称状を成す、都合ニつの状態が実在し得るが、追加的な回転が少なくて済み、能率的であるのは、図７の状態であるから、従前に於ては（先記引用文献１・引用文献２の発明の如く、把持爪を介入させる部位を特定しない場合と、前記本出願人が提案した発明の如く、把持爪を介入させる部位を特定する場合との双方共に）、優先的に図７の状態を選択するのが通例であった。   That is, as will be described in detail later, for example, as illustrated in FIG. 6, a log G1 sandwiched between a pair of left and right temporary core spindles 3 and 3a constituting a part of the log centering device A is shown in the direction of the arrow in the figure. Rotation core N1 is calculated by rotating the rotation core N1 and rotating the rotation core N1 with the end portion on one (right side) of the mouth end being n1 and the end portion on the other (left side) of the mouth end being n2. However, the state in which the pair of left and right gripping members 12 constituting the log gripping mechanism b1 of the log supply device is parallel to the expansion / contraction direction is, as illustrated in FIGS. 7 and 8, a temporary axis M1 ( 7 and the center axis j) of the spindle for the temporary core are symmetrical (centered), there are two convenient states, but the additional rotation is small and efficient. In the past, in the past (reference cited document 1 / quoted text) 7 both in the case of not specifying the part where the gripping nail is intervened as in the invention of No. 2 and in the case of specifying the part where the gripping nail is intervened as in the invention proposed by the applicant). It was customary to select the state.

因に、検知した原木の外周形状を、主要な条件として採用して、回転芯を算定する場合であっても、所望の回転芯は、帯状のベニヤ単板の取得率、ベニヤ単板の総取得量等の諸要件を勘案して（必要に応じては、心材部分の所在位置、年輪の芯の所在位置等の要件も適度の割合で加味して）算定することから、外周の局部的な凹凸部分の存在は、軽視或は無視される傾向となるが、原木の重心は、局部的な凹凸部分の存在を含めた全体の外周形状に応じて（正確には、局部毎の比重の分布状態にも応じて）定まるので、前記回転芯の長さ方向の中央部と全く同じ位置にある確率は殆どなく、該中央部の近隣に外れて在るのが一般的であり、例えば図７及び図８の状態に於て、原木Ｇ１の重心Ｑが、夫々図示した点の位置（対称的ではあるが同一位置）にあると仮定すると、図７の状態の原木Ｇ１を、把持部材１２によって把持する場合の一方の木口面側については、図９に例示する如く、回転芯の末端部ｎ１から所定距離Ｚだけ離れた把持部材１２の先端部と原木Ｇの重心Ｑとの間隔はｕ１となり、また、他方の木口面側については、図１０に例示する如く、回転芯の末端部ｎ２から所定距離Ｚだけ離れた把持部材１２の先端部と原木Ｇ１の重心Ｑとの間隔はｕ２となるのに対して、図８の状態の原木Ｇ１を、把持部材１２によって把持する場合の一方の木口面側については、図１１に例示する如く、回転芯の末端部ｎ１から所定距離Ｚだけ離れた把持部材１２の先端部と原木Ｇ１の重心Ｑとの間隔はｈ１となり、また、他方の木口面側については、図１２に例示する如く、回転芯の末端部ｎ２から所定距離Ｚだけ離れた把持部材１２の先端部と原木Ｇの重心Ｑとの間隔はｈ２となる。   Even if the outer circumference of the detected raw wood is adopted as the main condition and the rotation center is calculated, the desired rotation center is the acquisition rate of the belt-like veneer veneer and the total veneer veneer. Since it is calculated by taking into account various requirements such as the amount of acquisition (including the location of the heartwood part and the location of the center of the annual ring, etc., if necessary) However, the center of gravity of the log depends on the overall outer peripheral shape including the presence of local uneven parts (more precisely, the specific gravity of each local part is (Depending on the distribution state), there is almost no probability that it is in the same position as the central portion in the longitudinal direction of the rotating core, and it is generally outside the central portion. 7 and FIG. 8, the center of gravity Q of the log G1 is the position of the point shown in the figure (although symmetrical, the same Assuming that the raw wood G1 in the state of FIG. 7 is gripped by the gripping member 12, the one end surface side when gripping the raw wood G1 in FIG. 7 is a predetermined distance Z from the end n1 of the rotary core as illustrated in FIG. The distance between the tip of the gripping member 12 and the center of gravity Q of the log G is u1, and the other side of the mouth end side is a predetermined distance Z from the end n2 of the rotating core as illustrated in FIG. Whereas the distance between the distal end of the gripping member 12 and the center of gravity Q of the log G1 is u2, on the one end face side when the log G1 in the state of FIG. As illustrated in FIG. 11, the distance between the tip end of the gripping member 12 that is a predetermined distance Z away from the end n1 of the rotating core and the center of gravity Q of the log G1 is h1, As illustrated in FIG. 12, the rotating core Distance between the center of gravity Q of the tip and the timber G of the gripping member 12 away from the distal end n2 by the predetermined distance Z becomes h2.

そこで、夫々の間隔の合計を比較すると、ｕ１＋ｕ２＞ｈ１＋ｈ２の関係が成立するので（但し、あくまで重心Ｑが図示した点の位置に在る実例の場合）、図７の状態の原木Ｇ１を把持部材１２によって把持した場合には、図８の状態の原木Ｇ１を把持部材１２によって把持する場合に比べて、重心から些か離れた部位を把持する結果となり、把持姿勢の歪の発生を抑止する効果が、概して劣る問題点があるにも拘わらず、従前は、斯様な問題点の存在に気づかないで、単に処理の迅速化を図るべく、追加的な回転が少なくて済む図７の状態を優先的に選択するのが通例であったから、供給位置の精度が悪化し易い確率が甚だ高く、一段と改良を施す余地のあることが、本発明の開発過程に於て判明した。   Therefore, when the sum of the intervals is compared, the relationship of u1 + u2> h1 + h2 is established (however, in the case of the actual example in which the center of gravity Q is at the position of the illustrated point), the log G1 in the state of FIG. 8, the result is that a portion slightly separated from the center of gravity is gripped as compared with the case where the raw wood G1 in the state of FIG. However, in spite of the generally inferior problem, the state of FIG. 7 in which the number of additional rotations can be reduced in order to speed up the process simply without noticing the existence of such a problem. Since it was customary to preferentially select, it has been found in the development process of the present invention that there is a high probability that the accuracy of the supply position is likely to deteriorate and there is room for further improvement.

本発明は、前記課題を解決すべく開発したものであって、具体的には、ベニヤレースの前位に、仮に定めた原木の仮軸芯を、左右一対の仮芯用のスピンドルを以って挟持し、前記仮軸芯を中心として、原木を少なくとも一回転させると共に、適宜の外周検知機構を用いて、少なくとも原木の両木口面乃至は両木口面付近の輪郭を含めた、原木の外周形状を検知し、次いで、検知した外周形状を、所望の回転芯を求める際の主要な条件として採用して、原木の回転芯を算定する機能を具備する原木芯出し装置と、前記仮芯用のスピンドルによって挟持された原木を、左右一対の伸縮自在な把持部材によって把持し直す原木把持機構と、該原木把持機構を、前記原木芯出し装置の仮芯用のスピンドルに対応する位置から、ベニヤレースのスピンドルに対応する位置まで、交互に往復作動させる往復作動機構とを具備する原木供給装置とを備えて、ベニヤレースへ原木を供給するに際し、
前記算定した原木の回転芯が、前記原木の一方の木口側から見て、前記把持部材の伸縮方向に対して平行状となり、且つ、原木の長さ方向の中央部に対して略同等の適宜距離だけ離れた少なくとも左右各一箇所の輪郭に適合する仮想重心と、前記回転芯に適応する部位に把持爪を介入させる際の各把持部材の先端部とが、可及的に接近し得る状態に至るまで、挟持した原木を追加的に回転させてから、回転を停止させ、次いで、前記回転芯に適応する部位を、各把持部材の把持爪によって把持し直すことを特徴とするベニヤレースへの原木の供給方法（請求項１）と、原木の両木口面乃至は両木口面付近の輪郭の中心に基づいて、仮想重心を定めて成る請求項１記載のベニヤレースへの原木の供給方法（請求項２）と、原木の両木口面乃至は両木口面付近の輪郭の中心と、原木の長さ方向に於ける中央部の輪郭の中心とに基づいて、仮想重心を定めて成る請求項１記載のベニヤレースへの原木の供給方法（請求項３）と、原木の両木口面乃至は両木口面付近の輪郭の中心と、該二箇所の輪郭の内側に於て、略等間隔毎に位置する二箇所以上の輪郭の中心とに基づいて、仮想重心を定めて成る請求項１記載のベニヤレースへの原木の供給方法（請求項４）と、原木の両木口面に於ける回転芯の末端部から、ベニヤレースのスピンドルの半径に最少安全保障間隔を加算して算出される、所定距離だけ離れた部位を、回転芯に適応する部位とし、該部位に各把持部材の把持爪を介入させて、原木を把持して成る請求項１又は請求項２又は請求項３又は請求項４記載のベニヤレースへの原木の供給方法（請求項５）とを提案する。

The present invention has been developed to solve the above-described problems. Specifically, a temporary shaft core of a tentatively defined raw wood is provided at the front of a veneer race, and a pair of left and right temporary core spindles are provided. The outer circumference of the raw wood, including at least the both wood mouth faces or the contours of both wood mouth faces, using at least one rotation of the raw wood around the temporary axis and using an appropriate outer periphery detection mechanism A wood log centering device having a function of detecting a shape and then adopting the detected outer peripheral shape as a main condition when obtaining a desired rotary core and calculating a rotary core of the raw wood, and the temporary core A log gripping mechanism for gripping the log sandwiched between the spindles of the left and right by a pair of left and right stretchable gripping members, and the log gripping mechanism from a position corresponding to the temporary core spindle of the log centering device. Racing spind Upon to a position corresponding, and a timber feeder for and a reciprocating mechanism for reciprocating alternately supplying timber to the veneer lathe, the
The calculated rotation center of the log is parallel to the stretching direction of the gripping member when viewed from one end of the log , and is approximately equivalent to the central portion in the length direction of the log. A state in which the virtual center of gravity that fits at least one left and right contours that are separated by a distance and the tip of each gripping member when the gripping claw is intervened in a portion that is adapted to the rotating core can be as close as possible To the veneer lace characterized by additionally rotating the sandwiched raw wood and then stopping the rotation, and then re-gripping the portion adapted to the rotating core with the gripping claws of each gripping member 2. A method for supplying raw wood to a veneer lace according to claim 1, wherein a virtual center of gravity is determined based on the center of the contour of the both ends of the raw wood or in the vicinity of both wood fronts. (Claim 2) and the front and bottom of raw wood 2. A method for supplying raw wood to a veneer lace according to claim 1, wherein the virtual center of gravity is determined based on the center of the contour near the mouth end and the center of the contour of the central portion in the length direction of the raw wood. 3), based on the center of the contour of both ends of the raw wood or the vicinity of the surfaces of both ends, and the centers of two or more contours located at almost equal intervals inside the contours of the two locations. 2. A method for supplying a log to a veneer lace according to claim 1, wherein a virtual center of gravity is defined (Claim 4), and a radius of a spindle of the veneer lace from a distal end portion of a rotary core at both ends of the log. 2. A portion calculated by adding a security interval and spaced apart by a predetermined distance is defined as a portion adapted to the rotating core, and a gripping claw of each gripping member is interposed in the portion to grip a log. Or a log to veneer lace according to claim 2 or claim 3 or claim 4 We propose a supply method (claim 5).

本発明の請求項１に係る発明によれば、原木の回転芯が、原木供給装置の原木把持機構を構成する左右一対の把持部材の伸縮方向に対して平行状となる状態であって、且つ、原木の長さ方向の中央部に対して略同等の適宜距離だけ離れた少なくとも左右各一箇所の輪郭に適合する仮想重心と、前記回転芯に適応する部位に把持爪を介入させる際の各把持部材の先端部とが、可及的に接近し得る状態に至るまで、挟持した原木を追加的に回転させてから、回転を停止させ、次いで、前記回転芯に適応する部位を、各把持部材の把持爪によって把持し直すものであるから、従前の無作為の場合とは違って、常に、原木の自重の慣性力に伴うモーメントの作用が、可及的に少なくなる、適切な態様を以って、原木を把持することができ、供給位置の精度の悪化抑止に極めて有効である。   According to the invention according to claim 1 of the present invention, the rotation core of the raw wood is in a state of being parallel to the expansion and contraction direction of the pair of left and right gripping members constituting the raw wood gripping mechanism of the raw wood supply device, and , A virtual center of gravity that fits at least one left and right contours that are separated from each other by a substantially equivalent distance from the central portion of the length direction of the log, and each of the gripping claws that intervene in a portion that is adapted to the rotating core Further rotate the sandwiched raw wood until the tip of the gripping member can reach as close as possible, stop the rotation, and then grip each part that is suitable for the rotating core. Because it is re-gripped by the gripping claws of the member, unlike the conventional random case, an appropriate mode in which the action of the moment accompanying the inertia force of the weight of the raw wood is always reduced as much as possible. Therefore, the log can be gripped and the supply position It is very effective in the deterioration suppression of time.

因に、前記仮想重心は、単に原木の輪郭のみに適合する仮想の重心であって、局部的な比重の差異の要件を除外してあるので、必ずしも正確な重心の位置とは一致しないが、公知の通り、単一の樹種に於ける局部的な比重の差異は、主として含水率の相違に起因するものであり、いわゆる心材と辺材の差異の如く、原木の放射方向（遠芯方向）に対しては比較的顕著であっても、円周方向に於ては、あまり顕著ではないので、正確な重心に対して、実用的に格別支障となるほどの違いは生じない。   Incidentally, the virtual center of gravity is a virtual center of gravity that only fits the contour of the raw wood, and excludes the requirement of local specific gravity difference, so it does not necessarily match the exact position of the center of gravity, As is well known, the difference in local specific gravity in a single tree species is mainly caused by the difference in moisture content, and the radial direction of the raw wood (the far-core direction), such as the difference between so-called heartwood and sapwood. Even if it is relatively conspicuous, it is not so conspicuous in the circumferential direction, so that there is no practical difference between the accurate center of gravity.

尚、比較的通直な短尺原木（２尺〜４尺）を対象とする場合には、請求項２に係る発明の如く、原木の両木口面乃至は両木口面付近の輪郭の中心に基づいて、仮想重心を定めても、正確な重心に対して、実用的に格別支障となるほどの違いは生じないが、弓状に湾曲した短尺原木を対象とする場合には、請求項３に係る発明の如く、原木の両木口面乃至は両木口面付近の輪郭と、原木の長さ方向に於ける中央部の輪郭との都合３箇所の輪郭の中心に基づいて、仮想重心を定めるのが好ましく、更に、例えば二箇所以上で屈曲した長尺原木等の如く、比較的長くて不定形な原木を対象とする場合など、必要に応じては、請求項４に係る発明の如く、原木の両木口面乃至は両木口面付近の輪郭を含む、四箇所以上の輪郭の中心に基づいて、仮想重心を定めるようにしても差支えない。   When a relatively straight short log (2 to 4) is used as a target, as in the invention according to claim 2, it is based on the center of the contour of both ends of the original wood or the vicinity of both ends. Even if the virtual center of gravity is determined, there is no practical difference from the accurate center of gravity. As in the invention, the virtual center of gravity is determined based on the centers of the three contours, namely, the contours of both ends of the raw wood or the vicinity of the front surfaces of the raw wood and the contour of the central portion in the length direction of the raw wood. Preferably, for example, in the case of a relatively long and irregular shaped log such as a long log bent at two or more places, if necessary, as in the invention according to claim 4, Based on the center of four or more contours, including the contours of both ends or the vicinity of both ends, the virtual weight No problem even if to define a.

また、請求項５に係る発明の如く、原木の両木口面に於ける回転芯の末端部から、ベニヤレースのスピンドルの半径に最少安全保障間隔を加算して算出される、所定距離だけ離れた部位を、回転芯に適応する部位として、該部位に、各把持部材の把持爪を介入させる態様によれば、ベニヤレースのスピンドルと把持部材の先端部との衝突を確実に回避する制約条件下に於て、原木の自重の慣性力に伴うモーメントの作用が、最も少なくなるので好ましいが、仮に前記所定距離よりも幾分多い（長い）距離の別の部位に、各把持部材の把持爪を介入させる態様であっても、前記仮想重心と、前記次善の部位に把持爪を介入させる際の各把持部材の先端部とが、可及的に接近し得る状態に至るまで、挟持した原木を追加的に回転させる構成による作用・効果は、相応に奏されるので（対称的な状態に回転を留めた場合と比較すれば、やはり、モーメントの作用が少ない）有効である。   Further, as in the invention according to claim 5, a predetermined distance is calculated by adding the minimum security interval to the radius of the spindle of the veneer race from the terminal ends of the rotary cores at both ends of the raw wood. According to the aspect in which the part is adapted to the rotating core, and the gripping claw of each gripping member is intervened in the part, the constraint condition for reliably avoiding the collision between the spindle of the veneer race and the tip of the gripping member However, it is preferable that the action of the moment due to the inertial force of the own weight of the raw wood is minimized, but it is assumed that the gripping claws of each gripping member are placed at another part slightly longer (longer) than the predetermined distance. Even if it is an aspect to intervene, the virtual wood grabbed until the virtual center of gravity and the distal end portion of each gripping member when the gripping nail is intervened in the suboptimal part reach a state where they can approach as much as possible Depending on the configuration to rotate the Use and effect, so are achieved accordingly (in comparison with the case of fastening a rotary symmetrical state, still less the effect of the moment) is effective.

本発明の実施に用い得る一連の装置類の概略正面説明図である。It is a schematic front explanatory drawing of a series of apparatuses which can be used for implementation of this invention. 図１に例示した一連の装置類の概略側面説明図である。FIG. 2 is a schematic side view illustrating a series of apparatuses illustrated in FIG. 1. 図１・図２の装置類による仮軸芯の定め方の説明図である。It is explanatory drawing of how to determine the temporary axis by the apparatus of FIG. 1 and FIG. 図１・図２の装置類による原木半径の測り方の説明図である。It is explanatory drawing of how to measure the log radius by the apparatus of FIG. 1 and FIG. 図１・図２の装置類による原木の立体形状の定め方の説明図である。It is explanatory drawing of how to determine the solid shape of the raw wood by the apparatus of FIG. 1 and FIG. 図１・図２の装置類による原木の回転芯の定め方の説明図である。It is explanatory drawing of how to determine the rotation core of the raw wood by the apparatus of FIG. 1 and FIG. 図６に例示した原木の供給姿勢の定め方の説明図である。It is explanatory drawing of how to determine the supply attitude | position of the raw wood illustrated in FIG. 図６に例示した原木の供給姿勢の異なる定め方の説明図である。It is explanatory drawing of the method of determining from which the supply attitude | position of the raw wood illustrated in FIG. 6 differs. 図７に図示した原木の右木口面に於ける把持態様の説明図である。It is explanatory drawing of the holding | grip aspect in the right wooden mouth surface of the raw wood shown in FIG. 図７に図示した原木の左木口面に於ける把持態様の説明図である。It is explanatory drawing of the holding | grip aspect in the left mouth end surface of the raw wood shown in FIG. 図８に図示した原木の右木口面に於ける把持態様の説明図である。It is explanatory drawing of the holding | grip aspect in the right wooden mouth surface of the raw wood shown in FIG. 図８に図示した原木の左木口面に於ける把持態様の説明図である。It is explanatory drawing of the holding | grip aspect in the left mouth end surface of the raw wood shown in FIG. 図１・図２の装置類による原木の移動態様の説明図である。It is explanatory drawing of the movement aspect of a raw tree by the apparatus of FIG. 1, FIG. 比較的通直な原木に於ける仮想重心の定め方の説明図である。It is explanatory drawing of how to determine the virtual center of gravity in a relatively straight log. 湾曲した原木に於ける仮想重心の定め方の説明図である。It is explanatory drawing of the method of determining the virtual gravity center in the curved log. 図１・図２の装置類による別の供給態様の説明図である。It is explanatory drawing of another supply aspect by the apparatuses of FIG. 1, FIG. 図１・図２の装置類による例外的な原木の把持態様の説明図である。It is explanatory drawing of the holding | grip aspect of exceptional raw wood by the apparatuses of FIG. 1 and FIG. 本発明の実施に用い得る別の一連の装置類の正面概略説明図である。It is a front schematic explanatory drawing of another series of apparatuses which can be used for implementation of this invention. 図１８に例示した一連の装置類の側面概略説明図である。FIG. 19 is a schematic side view of a series of apparatuses illustrated in FIG. 18. 図１８・図１９の装置類による原木の供給態様の説明図である。It is explanatory drawing of the supply mode of the raw wood by the apparatus of FIG. 図１８・図１９の装置類による別の供給態様の説明図である。It is explanatory drawing of another supply aspect by the apparatuses of FIG.18 and FIG.19. 図１８・図１９の装置類による例外的な原木の供給態様の説明図である。It is explanatory drawing of the supply aspect of the exceptional raw wood by the apparatus of FIG.

以下、本発明を図面に例示した実施の一例と共に更に詳述するが、図面を見易くする便宜上、木口面側から見た原木については、手前側の木口面の輪郭みのを図示するに留め、奥行方向に有る凹凸部分の外縁、奥側（反対側）の木口面の輪郭、手前側の木口面に現れる年輪等については、図示を省略した。また、各機器類の作動を制御する制御装置、及び該制御装置と各機器類とを接続する制御系統（制御回路）についても、特殊な構成を採る必要はなく、要は所要の制御機能を奏し得るものであれば足りるので、必要な制御の態様を詳述するに留め、図示は省略した。また、図面に例示した一連の装置類の形態は、必要に応じて、適宜設計変更して差支えなく、所要の機能を奏し得る形態であれば足りるが、いずれにしても、本発明の実施には、所要の機能を奏し得る一連の装置類を用いることが必要であるから、先ず、図示した一連の装置類について説明する。尚、既に説明済の実施例とは別の実施例を説明するに際し、既に説明済の実施例と同じ構成で成る装置類、機構類、部材類等については、同一の符号を付して、重複する説明を可及的に省略する。   Hereinafter, the present invention will be described in further detail together with an example of the embodiment illustrated in the drawings, but for the convenience of making the drawings easier to see, for the raw wood viewed from the side of the front end, only the outline of the front end of the front end is shown in the figure, The outer edge of the uneven portion in the depth direction, the outline of the back (opposite) end of the mouth, and the annual rings appearing on the front end of the mouth are not shown. In addition, the control device that controls the operation of each device and the control system (control circuit) that connects the control device and each device do not need to have a special configuration, and the necessary control function is essential. Since it is sufficient if it can be played, only the necessary control mode is described in detail, and the illustration is omitted. The form of the series of devices illustrated in the drawings may be appropriately changed in design as needed, and may be any form that can perform a required function. Since it is necessary to use a series of devices capable of performing a required function, the illustrated series of devices will be described first. In describing an embodiment different from the already described embodiment, devices, mechanisms, members, and the like having the same configuration as the already described embodiment are denoted by the same reference numerals, A duplicate description will be omitted as much as possible.

図１・図２に於て、１は、原木芯出し装置Ａの一部を構成する左右一対の原木支持部材であって、常態に於ては、後述する仮芯用のスピンドル３・３ａの中心軸ｊを通る垂線を前後方向の中心とする、適宜の待機位置に於て待機し、図示しない原木搬入機構を介して間歇的に供給される原木Ｇを、各木口面の近辺に於て支持すると共に、図示しない制御装置の制御に基づく流体シリンダ等から成る昇降作動部材（図示省略）の作動を得て、左右各別に昇降作動し、支持した原木Ｇを後述する位置まで上昇させる。   1 and 2, reference numeral 1 denotes a pair of left and right log support members that constitute a part of the log centering apparatus A. In a normal state, a temporary core spindle 3 or 3a, which will be described later, is provided. Standing at an appropriate standby position with the perpendicular passing through the central axis j as the center in the front-rear direction, the log G that is intermittently supplied via a log loading mechanism (not shown) In addition to being supported, an operation of a lifting operation member (not shown) made up of a fluid cylinder or the like based on the control of a control device (not shown) is obtained, and the lifting operation is performed separately for each of the left and right, and the supported log G is raised to a position described later.

２は、原木芯出し装置Ａの一部を構成する左右一対のカメラであって、前記原木支持部材１によって支持されて上昇する途中の原木Ｇの両木口面を左右各別に撮影し、図示しない制御装置に、画像信号を発信する。而して、制御装置は、各カメラ２からの画像信号に基づいて、原木Ｇの両木口の仮定直径を算定すると共に、算定した各仮定直径に適合する（各仮定直径の半分の位置にある点同士を結ぶ線に相当する）原木Ｇの仮軸芯Ｍを、後述する仮芯用のスピンドル３・３ａの中心軸ｊと同じ高さに合わせるべく、左右各別に上限位置を定めて、前記原木支持部材１の上昇を停止させる。また更に、必要に応じては、各カメラ２の画像信号に基づいて、原木Ｇの両木口面の輪郭に適合する中心を算出すると共に、算出した各中心に適合する仮想重心を算定したり、或は例えば年輪の芯位置を算出したり、更には例えば木口面に現れた心材部分の輪郭を算出したりする。   Reference numeral 2 denotes a pair of left and right cameras that constitute a part of the log centering device A, and photographs both the left and right mouths of the log G that is supported by the log support member 1 and is not shown. An image signal is transmitted to the control device. Thus, the control device calculates the assumed diameter of both ends of the log G based on the image signal from each camera 2, and matches the calculated assumed diameter (at half the position of each assumed diameter). In order to match the temporary axis M of the log G (corresponding to a line connecting the points) to the same height as the central axis j of the spindle 3, 3a, which will be described later, The ascent of the log support member 1 is stopped. Furthermore, if necessary, based on the image signal of each camera 2, the center that matches the contours of the both ends of the log G is calculated, and the virtual center of gravity that matches each calculated center is calculated, Alternatively, for example, the core position of the annual ring is calculated, and further, for example, the contour of the heartwood portion appearing on the end of the tree is calculated.

３・３ａは、原木芯出し装置Ａの一部を構成する左右一対の仮芯用のスピンドルであって、所定の半径ｒを有するベニヤレースＣのスピンドル２２に比べて太さを一段と細してあり、各々が左右一対の基台４に固定された軸受箱５・５ａを介して回転可能に枢支されると共に、いずれか片側（図示例は左側）のスピンドル３ａには、歯付回転部材９の嵌装と図示矢印方向への摺動とを許容するスプライン３ｂが形成されており、歯付ベルト等から成る無端帯８と前記歯付回転部材９とを介して、回転検出器１０ａを具備した減速機付電動機等から成る駆動源１０に接続されている。また更に、当該仮芯用のスピンドル３・３ａは、遊転継手６を介して、流体シリンダ等から成る進退作動部材７にも接続されている。而して、制御装置は、算定した仮定直径に適合する原木Ｇの仮軸芯Ｍが、仮芯用のスピンドル３・３ａの中心軸ｊと同じ高さに至ったら、進退部材７を介して、各スピンドル３・３ａを原木Ｇの端面に向けて進出させることにより、原木Ｇを挟持させると共に、原木Ｇが両スピンドル３・３によって挟持された後は、前記原木支持部材１を当初の待機位置へ下降させ、更に、駆動源１０を介して、原木Ｇを少なくとも一回転させる。   Reference numerals 3.3a and 3a are a pair of left and right temporary core spindles constituting a part of the log centering device A, which is thinner than the spindle 22 of the veneer race C having a predetermined radius r. Each of them is rotatably supported via bearing boxes 5 and 5a fixed to a pair of left and right bases 4, and either one (left side in the illustrated example) spindle 3a has a toothed rotating member. 9 is formed, and a spline 3b that allows sliding in the direction of the arrow shown in the figure is formed. The rotation detector 10a is connected to the endless belt 8 made of a toothed belt and the like and the toothed rotating member 9. It is connected to a drive source 10 composed of a motor equipped with a reduction gear. Furthermore, the temporary spindles 3 and 3a are also connected to an advancing / retracting operation member 7 made of a fluid cylinder or the like via an idler joint 6. Thus, when the temporary shaft core M of the raw wood G matching the calculated assumed diameter reaches the same height as the central axis j of the temporary core spindles 3 and 3a, the control device passes the advance / retreat member 7 through. The spindles 3 and 3a are advanced toward the end faces of the logs G, so that the logs G are clamped. After the logs G are clamped by the spindles 3 and 3, the log support member 1 is kept in the initial standby state. The position is lowered to the position, and the log G is rotated at least once through the drive source 10.

１１は、原木芯出し装置Ａの一部を構成する反射型光電管式の距離計等から成る外形検知器であって、原木Ｇの両木口面付近と中央部とに対向する計三箇所に配設されており、各箇所に於ける原木Ｇの外周に対する距離（間隔）を計測して、図示しない制御装置に計測値を発信する。而して、制御装置は、前記駆動源１０が具備する回転検出器１０ａから発信される回転検出信号と、各外形検知器１１から発信される計測値とから、各箇所に於ける原木Ｇの外郭形状を概算すると共に、各外郭形状を立体的に合成することによって、原木Ｇの立体形状を概算し、該立体形状に適応する所望の軸芯を、所要の回転芯（Ｎ）として定める。また、必要に応じては、例えば外側ニ箇所の外形検知器１１の検知信号に基づいて、原木Ｇの両木口面付近の輪郭に適合する中心を算出すると共に、算出した各中心に適合する仮想重心を算定するか、或は例えば三箇所の外形検知器１１の検知信号に基づいて、原木Ｇの両木口面付近の輪郭の中心と、原木Ｇの長さ方向に於ける中央部の輪郭の中心とを算出すると共に、算出した各中心に適合する仮想重心を定めるか、更には例えば先記カメラ２の画像信号に基づいて、原木Ｇの両木口面の輪郭に適合する中心を、また、中央の外形検知器１１の検知信号に基づいて、原木Ｇの長さ方向に於ける中央部の輪郭の中心を夫々算出すると共に、算出した各中心に適合する仮想重心を定める。そして更に、後に改めて詳述する如く、定めた所要の回転芯（Ｎ）の延在方向が、後述する原木供給装置Ｂの原木把持機構ｂ１に於ける把持部材１２の伸縮方向と平行状を成す状態であって、且つ、前記算定した仮想重心（Ｑ１、Ｑ２）と、前記回転芯（Ｎ）に適応する部位に把持爪１２ａを介入させる際の各把持部材１２の先端部とが、可及的に接近し得る状態に至るまで、原木Ｇを追加的に回転させる。   Reference numeral 11 denotes an external shape detector composed of a reflective photoelectric tube type distance meter, etc., constituting a part of the log centering device A, and is arranged at a total of three locations facing the vicinity of both the mouth ends of the log G and the central part. The distance (interval) with respect to the outer periphery of the log G at each location is measured, and the measured value is transmitted to a control device (not shown). Thus, the control device detects the rotation of the log G at each location from the rotation detection signal transmitted from the rotation detector 10a included in the drive source 10 and the measured value transmitted from each outer shape detector 11. The outline shape is estimated and the outline shapes are three-dimensionally synthesized to estimate the three-dimensional shape of the log G, and a desired shaft core adapted to the three-dimensional shape is determined as a required rotation center (N). Further, if necessary, for example, based on the detection signal of the outer shape detector 11 at the outer two places, a center that matches the contour of the log G in the vicinity of both mouth ends is calculated, and a virtual that matches each calculated center. The center of gravity is calculated, or, for example, based on the detection signals of three contour detectors 11, the center of the contour of the log G in the vicinity of the both mouths and the contour of the central part in the length direction of the log G And calculating a center of gravity that matches each calculated center, or, based on the image signal of the camera 2, for example, a center that matches the contours of both log mouths of the log G, Based on the detection signal of the center outline detector 11, the center of the contour of the central portion in the length direction of the log G is calculated, and the virtual center of gravity that matches each calculated center is determined. Further, as will be described in detail later, the predetermined direction of extension of the rotary core (N) is parallel to the expansion / contraction direction of the gripping member 12 in the log gripping mechanism b1 of the log supply device B described later. And the calculated virtual center of gravity (Q1, Q2) and the tip of each gripping member 12 when the gripping claws 12a are intervened in a portion adapted to the rotating core (N) are possible. The log G is additionally rotated until it is in a state that can be approached.

１２は、原木供給装置Ｂの原木把持機構ｂ１の一部を構成する左右一対の把持部材であって、各々が後述する左右一対の保持部材１５によって垂直方向へ伸縮可能に保持されると共に、基端部には、回転検出器１４ａを具備したサーボモータ等から成る駆動源１４によって回転する螺子１３が、また、先端部には、原木Ｇの端面を把持する適数個の楔状の把持爪１２ａが夫々具備されている。而して、制御装置は、原木Ｇの端面を把持するに際し、後に改めて詳述する如く、駆動源１４を介して螺子１３を回転させることにより、把持爪１２ａの位置が、原木Ｇの端面の好適位置に至るように、各把持部材１２を適当に伸縮（保持部材１５に対する相対的な伸縮を指す）させる。   Reference numeral 12 denotes a pair of left and right grip members constituting a part of the log gripping mechanism b1 of the log supply device B, each of which is held by a pair of left and right holding members 15 described later so as to be able to expand and contract in the vertical direction. At the end is a screw 13 that is rotated by a drive source 14 comprising a servo motor equipped with a rotation detector 14a, and at the tip is an appropriate number of wedge-shaped gripping claws 12a that grip the end face of the log G. Are provided. Thus, when gripping the end face of the log G, the control device rotates the screw 13 via the drive source 14 so that the position of the grip claw 12a is adjusted to the end face of the log G as described in detail later. Each gripping member 12 is appropriately expanded and contracted (refers to relative expansion and contraction with respect to the holding member 15) so as to reach a suitable position.

１５は、原木供給装置Ｂの原木把持機構ｂ１の一部を構成する左右一対の保持部材であって、各々が後述する移動梁１７に付設されたガイドレール１７ａに沿って移動可能に嵌装されると共に、図示しない制御装置の制御に基づく流体シリンダ等から成る把持作動部材１６の作動を得て、適時、相互に接近・離隔せしめられる。而して、制御装置は、後に改めて詳述する如く、各把持部材１２を適当に伸縮させた後に、把持作動部材１６を介して、各保持部材１５を相互に接近させることによって、各把持部材１２による原木Ｇの把持を実施する。   Reference numeral 15 denotes a pair of left and right holding members that constitute a part of the log holding mechanism b1 of the log supply apparatus B, and each is fitted so as to be movable along a guide rail 17a attached to a moving beam 17 described later. At the same time, the operation of the gripping operation member 16 including a fluid cylinder or the like based on the control of a control device (not shown) is obtained, and can be approached and separated from each other at appropriate times. Thus, as will be described in detail later, the control device appropriately expands and contracts each gripping member 12 and then brings the holding members 15 close to each other via the gripping operation member 16 to thereby each gripping member. 12 to grasp the log G.

１７は、原木供給装置Ｂの原木移動機構ｂ２の一部を構成する移動梁であって、原木供給装置Ｂの原木把持機構ｂ１を案内するガイドレール１７ａを具備すると共に、前記基台４とベニヤレースＣとの間に架設された左右一対の支持枠１８によって、前後方向へ移動可能に支持されている。   Reference numeral 17 denotes a moving beam constituting a part of the log moving mechanism b2 of the log supplying apparatus B, which includes a guide rail 17a for guiding the log holding mechanism b1 of the log supplying apparatus B, and the base 4 and the veneer. A pair of left and right support frames 18 installed between the race C and the race C are supported so as to be movable in the front-rear direction.

１９は、原木供給装置Ｂの原木移動機構ｂ２の一部を構成する左右一対の移動螺子であって、軸受箱２０によって枢支されると共に、前記移動梁１７に螺合されており、図示しない制御装置の制御に基づき、回転検出器２１ａを具備したサーボモータ等から成る駆動源２１の作動を得て、前記移動梁１７を前後方向へ移動させる。而して、制御装置は、適宜の待機位置、例えば原木芯出し装置ＡとベニヤレースＣとの中間位置に、移動梁１７を待機させておくと共に、後に改めて詳述する如く、所要時に、駆動源２１を作動させて、移動梁１７を、前記仮芯用のスピンドル３・３ａの上方近辺へ移動させ、更に、把持作動部材１６を介して、各保持部材１５を相互に接近させることによって、各把持部材１２による原木Ｇの把持を実施した後に、駆動源２１を適宜作動させて、移動梁１７を連続的に（或は間歇的に）移動させ、原木芯出し装置ＡからベニヤレースＣへ直ちに（或はそれらの中間位置等に於て適当な待機期間を設けて）原木Ｇを移動させる。   Reference numeral 19 denotes a pair of left and right moving screws that constitute a part of the log moving mechanism b2 of the log supplying device B. The left and right moving screws 19 are pivotally supported by the bearing box 20 and screwed to the moving beam 17, not shown. Based on the control of the control device, the operation of the drive source 21 including a servo motor equipped with the rotation detector 21a is obtained, and the moving beam 17 is moved in the front-rear direction. Thus, the control device makes the moving beam 17 stand by at an appropriate standby position, for example, an intermediate position between the log centering device A and the veneer race C, and drives it when necessary as described in detail later. By actuating the source 21, the moving beam 17 is moved to the upper vicinity of the temporary spindles 3 and 3a, and the holding members 15 are moved closer to each other via the gripping actuating member 16. After gripping the log G by each gripping member 12, the drive source 21 is operated as appropriate to move the moving beam 17 continuously (or intermittently) from the log centering device A to the veneer race C. Immediately (or with an appropriate waiting period at an intermediate position between them), the log G is moved.

本発明に係る原木の供給方法は、例えば斯様な構成で成る一連の装置類を用いて実施することが可能であって、以下、具体的な供給態様について、図３〜図１５に例示した供給態様に関係する説明図を引用しながら詳述すると、原木芯出し装置Ａに於ては、図示しない原木搬入機構を介して、原木支持部材１に原木Ｇが搬入されると、図示しない制御装置は、図３に例示する如く、原木支持部材１を上昇させる過程に於て、カメラ２を介して原木Ｇの両木口面を左右各別に撮影し、カメラ２からの画像信号に基づいて、原木Ｇの右側木口面の仮定直径Ｄ１と、左側木口面の仮定直径Ｄ２とを算定すると共に、仮芯用のスピンドル３・３ａの中心軸ｊを通る垂線上であって、且つ、各仮定直径Ｄ１・Ｄ２の半径Ｄ１／２・Ｄ２／２に相当する位置に位置する点ｇ１・ｇ２を結ぶ線を、仮軸芯Ｍとして定め、而も、原木Ｇの右側に位置する原木支持部材１については、カメラ２の中心と仮芯用のスピンドル３の中心軸ｊとの間隔Ｓに、カメラ２の中心と前記点ｇ１との間隔ΔＳ１を加算した距離Ｓ１（＝Ｓ＋ΔＳ１）だけ、また、原木Ｇの左側に位置する原木支持部材１については、前記間隔Ｓに、カメラ２の中心と前記点ｇ２との間隔ΔＳ２を加算した距離Ｓ２（＝Ｓ＋ΔＳ２）だけ、夫々継続的に上昇させることによって、前記仮軸芯Ｍを、仮芯用のスピンドル３・３ａの中心軸ｊと同じ高さに合わせる。尚、原木の元口と末口との直径差、撮影時期のズレ等に起因して、カメラ２の中心と前記点ｇ１又は点ｇ２の相対位置が、上下に逆転している際には、逆転している側について、前記間隔Ｓから、実測間隔ΔＳｘを減算した距離Ｓｘ（＝Ｓ−ΔＳｘ）だけ、継続的に上昇させることによって、仮軸芯Ｍを、仮芯用のスピンドル３・３ａの中心軸ｊと同じ高さに合わせる。   The method for supplying raw wood according to the present invention can be implemented using, for example, a series of devices having such a configuration. Hereinafter, specific supply modes are illustrated in FIGS. 3 to 15. In detail, referring to an explanatory diagram related to the supply mode, in the log centering device A, when the log G is loaded into the log support member 1 through a log loading mechanism (not illustrated), a control (not illustrated) is performed. As illustrated in FIG. 3, in the process of raising the log support member 1, the apparatus shoots both the left and right mouth surfaces of the log G via the camera 2, and based on the image signal from the camera 2, The assumed diameter D1 of the right side of the log G and the assumed diameter D2 of the left side of the wood are calculated, and on the perpendicular line passing through the central axis j of the spindles 3 and 3a for temporary cores, and each assumed diameter D1 · D2 radius equivalent to D1 / 2 · D2 / 2 A line connecting the points g1 and g2 positioned at the center is defined as a temporary axis M, and for the log support member 1 positioned on the right side of the log G, the center axis of the camera 2 and the center axis of the spindle 3 for the temporary core j is added to the distance S between the center of the camera 2 and the point g1 and the distance S1 (= S + ΔS1), and the log support member 1 located on the left side of the log G is set to the distance S. The provisional axis M is continuously raised by a distance S2 (= S + ΔS2) obtained by adding the distance ΔS2 between the center of the camera 2 and the point g2 to make the provisional axis M the center of the provisional spindles 3 and 3a. Adjust to the same height as axis j. When the relative position between the center of the camera 2 and the point g1 or the point g2 is reversed up and down due to the difference in diameter between the original mouth and the end of the raw wood, the difference in photographing time, etc., On the reverse side, the temporary shaft core M is continuously raised by a distance Sx (= S−ΔSx) obtained by subtracting the actual measurement interval ΔSx from the interval S, whereby the temporary shaft core M is moved to the temporary core spindles 3 and 3a. To the same height as the central axis j.

また、図示しない制御装置は、必要に応じて、各カメラ２の画像信号に、適宜の画像処理を施して（例えば両木口面の輪郭上に多数の注目点を定めて、両木口面を多角形に見立てると共に、多角形の重心位置を求める為の公知の数式を活用することで、容易に輪郭に適合する中心を算出することができる。また、市販されているＣＡＤ／ＣＡＭにも、多角形の重心位置を求めるソフトウェアが組み込まれている）、原木Ｇの両木口面の輪郭に適合する中心を算出すると共に、算出した各中心に適合する仮想重心を算定する制御も併せて実施するものであり、例えば図１４に例示する如く、原木Ｇ１に於て、一方の木口面の輪郭上に於ける多数の注目点ｖに適合する中心ｑ１と、図示しない他方の木口面の輪郭上に於ける多数の注目点に適合する中心ｑ２とを算出した場合には、各中心の中間位置に、仮想重心Ｑ１を算定する。   In addition, a control device (not shown) performs appropriate image processing on the image signal of each camera 2 as necessary (for example, by setting a number of points of interest on the contours of both ends, It is possible to easily calculate the center that fits the contour by using a known mathematical formula for determining the center of gravity of the polygon while considering it to be a square, and there are many CAD / CAMs available on the market. Software that calculates the position of the center of gravity of the square is built in) and calculates the center that matches the contours of both log mouths of the log G, and also implements the control to calculate the virtual center of gravity that matches each calculated center For example, as illustrated in FIG. 14, in the log G1, a center q1 that matches a number of points of interest v on the contour of one of the end surfaces, and an outline of the other end surface (not shown). Fits many attention points When calculating the center q2 is an intermediate position of the centers, to calculate the virtual center of gravity Q1.

また更に、図示しない制御装置は、必要に応じて、例えば「原木の年輪中心検出装置および方法」（特願２０１０−２１０４６１号）に開示される如く、画像上で各端面の領域内に複数の探査開始点を設定すると共に、画像上に所定サイズの検査フィルタを設定し、更に、検査フィルタ内に写っている年輪の法線方向を検出すると共に、検査フィルタを、前記各探査開始点から年輪中心に向かうように法線方向へ移動させた場合に於ける、検査フィルタの移動軌跡を探査し、探査した各移動軌跡の交点（交点が複数ある場合は、複数の交点の重心）を求める画像処理を施すことによって、該交点（又は複数の交点の重心）を各端面の年輪の芯として検出し、所望の回転芯を定める際に、前記年輪の芯の要件を、適度の割合で加味したり、或は例えば杉原木等に於ける赤身と白太の違いの如く、画像上に於ける色の相違、濃淡等に基づいて、心材と辺材との境界を判別することにより、両木口面に現れた心材部分の輪郭を算出し、所望の回転芯を定める際に、前記心材部分の輪郭の要件を、適度の割合で加味したりする制御も併せて実施する。   Still further, a control device (not shown) may include a plurality of, as necessary, a plurality of rings in each end face region on the image, as disclosed in, for example, “Raw tree annual ring center detection device and method” (Japanese Patent Application No. 2010-210461). A search start point is set, an inspection filter of a predetermined size is set on the image, a normal direction of the annual ring reflected in the inspection filter is detected, and the inspection filter is connected to the annual ring from each of the search start points. An image that searches the movement trajectory of the inspection filter when moving in the normal direction toward the center and finds the intersection (or the center of gravity of multiple intersections if there are multiple intersections) of the searched movement trajectories By performing processing, the intersection (or the center of gravity of a plurality of intersections) is detected as the core of the annual ring at each end face, and when determining the desired rotational core, the requirements for the core of the annual ring are taken into consideration at an appropriate rate. Or For example, the difference between red and white thickness in Sugiharagi, etc., and the difference between the color on the image, the density, etc. When calculating the contour of the core material portion and determining a desired rotational core, control is also performed in consideration of the contour requirements of the core material portion at an appropriate ratio.

次いで、図示しない制御装置は、進退部材７を介して、各スピンドル３・３ａを原木Ｇの端面に向けて進出させることにより、原木Ｇを挟持させると共に、前記原木支持部材１を当初の待機位置へ下降させ、更に、駆動源１０を介して、原木Ｇを少なくとも一回転させるが、その過程に於て、図４・図５に例示する如く、任意角度θｔ毎に、外形検知器１１と仮芯用のスピンドル３・３ａの中心軸ｊとの間隔Ｒから、外形検知器１１と原木Ｇの外周との間隔Ｒ１を差し引くことによって、原木Ｇの両木口面付近と中央部との都合三箇所に於ける仮軸芯Ｍに対応する外郭寸法Ｒｘ（＝Ｒ−Ｒ１）を次々と計測し、更に、該計測した外郭寸法Ｒｘに基づいて、仮軸芯Ｍを中心とする原木Ｇの立体形状Ｐ１・Ｐ２・Ｐ３を概算し、併せて、各立体形状Ｐ１・Ｐ２・Ｐ３に適応する軸芯、例えば帯状のベニヤ単板を最も大量に取得せんと図る場合であれば、全ての立体形状Ｐ１・Ｐ２・Ｐ３に適合する最大内接円柱（図示省略）の中心軸を、所望の回転芯Ｎとして定める。尚、必要に応じては、先述の如く算出した年輪の芯の要件や、心材部分の輪郭の要件を、適度の割合で加味して、所望の回転芯を定める。尚、述上の如く仮軸芯Ｍに対応する外郭寸法Ｒｘを計測する際の、計測点の位置の情報は、必要に応じて、仮想重心を算定する際の、注目点の位置の情報として併用することが可能である。   Next, the control device (not shown) moves the spindles 3 and 3a toward the end face of the log G through the advance / retreat member 7, thereby holding the log G and holding the log support member 1 at the initial standby position. Further, the log G is rotated at least once through the drive source 10, and in the process, as shown in FIGS. 4 and 5, the outer shape detector 11 and the temporary detector 11 are temporarily set at every arbitrary angle θt. By subtracting the distance R1 between the outer shape detector 11 and the outer periphery of the log G from the distance R between the center axis j of the spindle 3 and 3a for the core, there are three convenient locations between the two log ends of the log G and the central part. The contour dimension Rx (= R−R1) corresponding to the temporary axis M in FIG. 1 is measured one after another, and the three-dimensional shape of the log G centered on the temporary axis M based on the measured outer dimension Rx. Estimate P1, P2, and P3, and combine each solid shape The maximum inscribed cylinder (not shown) that fits all three-dimensional shapes P1, P2, and P3 if you want to acquire the largest amount of shaft cores suitable for P1, P2, and P3. Is defined as a desired rotation center N. If necessary, the desired rotation center is determined by taking into account the annual ring core requirements and the core material contour requirements calculated as described above at an appropriate ratio. As described above, the position information of the measurement point when measuring the outline dimension Rx corresponding to the temporary axis M is the position information of the point of interest when calculating the virtual center of gravity, if necessary. It is possible to use together.

而して、図示しない制御装置は、例えば図６に例示する如く、原木Ｇ１について、仮軸芯Ｍ１を中心に一回転させ、一方の木口面に於ける末端部をｎ１、他方の木口面に於ける末端部をｎ２とする回転芯Ｎ１を定めたら、図７或は図８に例示する如く、前記回転芯Ｎ１が、先記原木把持機構ｂ１の一部を構成する把持部材１２の伸縮方向（垂直方向）に対して平行状を成す状態を予測すると共に、図７の状態の場合については、図９及び図１０に例示する如く、前記回転芯Ｎ１の一方の末端部ｎ１から所定距離Ｚだけ離れた把持部材１２の先端部と原木Ｇ１の仮想重心Ｑ１との間隔ｕ１、及び回転芯Ｎ１の他方の末端部ｎ２から所定距離Ｚだけ離れた把持部材１２の先端部と原木Ｇ１の仮想重心Ｑ１との間隔ｕ２を、また、図８の状態の場合については、図１１及び図１２に例示する如く、回転芯Ｎ１の一方の末端部ｎ１から所定距離Ｚだけ離れた把持部材１２の先端部と原木Ｇ１の仮想重心Ｑ１との間隔ｈ１、及び回転芯Ｎ１の他方の末端部ｎ２から所定距離Ｚだけ離れた把持部材１２の先端部と原木Ｇ１の仮想重心Ｑ１との間隔ｈ２を、夫々予め算出し、更に、図７の状態に於ける前記各間隔の合計値（ｕ１＋ｕ２）と、図８の状態に於ける前記各間隔の合計値（ｈ１＋ｈ２）とを比較して、結果的に、回転芯Ｎ１が、把持部材１２の伸縮方向に対して平行状を成す状態であり、且つ、前記各間隔の合計値が少なくなる状態（図示例の場合は、図８の状態）に至るまで、駆動源１０を介して、原木Ｇ１を追加的に回転させた後に、回転を停止させる。   Thus, for example, as illustrated in FIG. 6, the control device (not shown) rotates the raw wood G1 once around the temporary shaft core M1 so that the end portion at one end is n1 and the other end is at the other end. When the rotary core N1 whose end portion is n2 is determined, as shown in FIG. 7 or FIG. 8, the rotary core N1 is expanded and contracted in the gripping member 12 constituting a part of the wood log gripping mechanism b1. A state parallel to (vertical direction) is predicted, and in the case of the state of FIG. 7, as illustrated in FIGS. 9 and 10, a predetermined distance Z from one end portion n1 of the rotary core N1 is illustrated. The distance u1 between the distal end of the gripping member 12 and the virtual center of gravity Q1 of the log G1 and the virtual center of gravity of the log G1 from the distal end of the gripping member 12 separated from the other end n2 of the rotary core N1 by a predetermined distance Z The interval u2 with Q1 is also in the state of FIG. Accordingly, as illustrated in FIGS. 11 and 12, the distance h1 between the distal end portion of the gripping member 12 that is separated from the one end portion n1 of the rotary core N1 by a predetermined distance Z and the virtual center of gravity Q1 of the log G1, and the rotary core N1. The distance h2 between the tip end portion of the gripping member 12 that is separated from the other end portion n2 by a predetermined distance Z and the virtual center of gravity Q1 of the log G1 is calculated in advance, and each of the intervals in the state of FIG. Comparing the total value (u1 + u2) with the total value (h1 + h2) of the intervals in the state of FIG. 8, as a result, the rotary core N1 is parallel to the expansion / contraction direction of the gripping member 12. After the log G1 is additionally rotated through the drive source 10 until it reaches a state in which the total value of the intervals is reduced (in the illustrated example, the state of FIG. 8). Stop rotation.

尚、図示しない制御装置は、所望の回転芯を定めたら、追加的な回転を停止させる制御と併せて、速やかに、駆動源を介して、保持部材共々移動梁を、適宜の待機位置から、所望の把持実施位置へ移動させるが、具体的な移動態様については、大別して二通りの態様を採り得るので、先に、原木の回転芯に対応する位置に移動させる態様から説明する。   In addition, once the control device (not shown) has determined a desired rotation center, the control beam for stopping the additional rotation is quickly combined with the holding member and the movable beam from the appropriate standby position via the drive source. Although it moves to the desired holding | grip execution position, since it can divide roughly and a 2nd aspect can be taken about a specific movement aspect, it demonstrates from the aspect moved to the position corresponding to the rotation core of a raw wood first.

而して、図示しない制御装置は、所望の回転芯Ｎ１を定めたら、追加的な回転を停止させる制御と併せて、速やかに、駆動源２１を介して、保持部材１５共々移動梁１７を、適宜の待機位置から、所望の把持実施位置、例えば図８に例示する如く、原木Ｇ１の回転芯Ｎ１の真上（保持部材１５が保持する把持部材１２の真ん中が、回転芯Ｎ１の延長線上に位置する位置）に移動させると共に、図１１及び図１２に例示する如く、把持部材１２の下端部と前記回転芯Ｎ１の一方の末端部ｎ１との距離、及び把持部材１２の下端部と回転芯Ｎ１の他方の末端部ｎ２との距離が、夫々ベニヤレースＣのスピンドル２２の半径ｒに最少安全保障間隔α（通常は、数ｍｍ、例えば３ｍｍ程度）を加算して算出される、所定距離Ｚ（＝ｒ＋α）となる状態に至るまで、駆動源１４を介して、左右の把持部材１２を個別に変位（通常は、縮小状態からの伸長）させ、更に、前述する如く、原木Ｇ１の回転芯Ｎ１が、把持部材１２の伸縮方向に対して平行状を成し、且つ、原木Ｇ１の回転が停止した状態に於て、把持作動部材１６を介して、各保持部材１５を相互に接近させることにより、原木Ｇ１の把持を実施すると共に、進退部材７を介して、仮芯用のスピンドル３・３ａを原木Ｇ１の端面から離隔させることにより、原木Ｇ１の挟持を開放する。   Thus, when the control device (not shown) has determined the desired rotation center N1, along with the control to stop the additional rotation, the holding beam 15 and the moving beam 17 are quickly moved via the drive source 21. From an appropriate standby position, a desired gripping execution position, for example, as illustrated in FIG. 8, just above the rotary core N1 of the log G1 (the center of the gripping member 12 held by the holding member 15 is on the extended line of the rotary core N1. 11 and 12, the distance between the lower end of the gripping member 12 and one end n1 of the rotary core N1, and the lower end of the gripping member 12 and the rotary core, as illustrated in FIGS. The distance from the other end portion n2 of N1 is calculated by adding the minimum security interval α (usually about several mm, for example, about 3 mm) to the radius r of the spindle 22 of the veneer race C, respectively. (= R + α) Until then, the left and right gripping members 12 are individually displaced (usually extended from the contracted state) via the drive source 14, and the rotary core N1 of the log G1 is expanded and contracted as described above. Holding the raw wood G1 by bringing the holding members 15 close to each other via the holding operation member 16 in a state parallel to the direction and the rotation of the raw wood G1 is stopped. At the same time, the holding of the raw wood G1 is released by separating the temporary spindles 3 and 3a from the end face of the raw wood G1 via the advance / retreat member 7.

然る後に、図示しない制御装置は、図１３に例示する如く、駆動源２１を介して、保持部材１５共々移動梁１７を、ベニヤレースＣのスピンドル２２に対応する供給位置、つまり、把持部材１２の真ん中が、スピンドル２２の中心軸ｋを通る垂線上に位置する位置へ連続的に（必要に応じては、適宜の供給待機位置に暫時待機させて、間歇的に）移動させるが、把持実施位置から供給位置に至る所要移動距離Ｌｘとしては、仮芯用のスピンドル３・３ａの中心軸ｊとスピンドル２２の中心軸ｋとの間隔をＬ、仮芯用のスピンドル３・３ａの中心軸ｊと回転芯Ｎ１との間隔をΔｘとすると、次の数式、所要移動距離Ｌｘ＝Ｌ−Δｘによって算出することができる（但し、回転芯の位置が、図示例とは対称状となる場合については、所要移動距離Ｌｘ＝Ｌ＋Δｘとなる）。   Thereafter, as illustrated in FIG. 13, the control device (not shown) moves the holding beam 15 together with the moving beam 17 via the driving source 21 to the supply position corresponding to the spindle 22 of the veneer race C, that is, the gripping member 12. The center is continuously moved to a position located on a vertical line passing through the central axis k of the spindle 22 (if necessary, temporarily waiting at an appropriate supply standby position for a while), but holding is performed As the required moving distance Lx from the position to the supply position, the distance between the central axis j of the spindle 3 · 3a for the temporary core and the central axis k of the spindle 22 is L, and the central axis j of the spindle 3 · 3a for the temporary core When the distance between the rotation center N1 and Δx is Δx, it can be calculated by the following formula, the required movement distance Lx = L−Δx (however, the position of the rotation core is symmetrical with the example shown in the figure). , Required travel distance L x = L + Δx).

また更に、図示しない制御装置は、図１３に例示する如く、保持部材１５共々移動梁１７を、前記供給位置へ移動させる過程に於て、一方（右側）の把持部材１２については、回転芯Ｎ１の一方の末端部ｎ１とスピンドル２２の中心軸ｋとの高低差ｙ１だけ、駆動源１４を介して、保持部材１５に対する突出長さを伸長させ、また、他方（左側）の把持部材１２については、回転芯Ｎ１の他方の末端部ｎ２とスピンドル２２の中心軸ｋとの高低差ｙ２だけ、駆動源１４を介して、保持部材１５に対する突出長さを縮小させることにより、最終的に、回転芯Ｎ１の高さをスピンドル２２の中心軸ｋの高さに一致させる。   Furthermore, as illustrated in FIG. 13, the control device (not shown) moves the holding beam 15 together with the holding member 15 to the supply position, and the one of the grip members 12 (on the right side) has a rotating core N1. The protrusion length with respect to the holding member 15 is extended through the drive source 14 by the height difference y1 between one end portion n1 of the spindle 22 and the center axis k of the spindle 22, and the other (left side) gripping member 12 is The projecting length with respect to the holding member 15 is reduced by the height difference y2 between the other end portion n2 of the rotating core N1 and the central axis k of the spindle 22 to finally form the rotating core. The height of N1 is made to coincide with the height of the central axis k of the spindle 22.

尚、前記実施例に於ては、原木の両木口面の中心同士を結ぶ線の中間位置に、仮想重心を定めたが、例えば図１５に例示する如く、原木Ｇ２の両木口面乃至は両木口面付近の輪郭の中心ｑ３・ｑ５と、原木Ｇ２の長さ方向に於ける中央部の輪郭の中心ｑ４とを算出した場合であれば、略式的に、各中心ｑ３・ｑ４・ｑ５を結ぶ三角形の中心に仮想重心Ｑ２を定めるても、実際の重心の位置と大差は生じず、実用的に格別支障はない。また、図示は省略したが、必要に応じて、四箇所以上の輪郭の中心を算出する場合には、各中心を結ぶ多面体の中心に仮想重心を定めれば差支えない。また、所望の回転芯を定める為の輪郭上に於ける外郭寸法の計測箇所数と、仮想重心を定める為の輪郭上に於ける注目点の総数とは、同数である必要はなく、各々の所要精度からすると、仮想重心を定める為の輪郭上に於ける注目点の総数を、所望の回転芯を定める為の輪郭上に於ける外郭寸法の計測箇所よりも多くする方が実用的である（図５・図１４参照）。   In the above-described embodiment, the virtual center of gravity is set at the middle position of the line connecting the centers of both ends of the raw wood. For example, as illustrated in FIG. If the contour centers q3 and q5 in the vicinity of the mouth end surface and the center center q4 of the central portion in the length direction of the log G2 are calculated, the respective centers q3, q4, and q5 are approximately connected. Even if the virtual center of gravity Q2 is determined at the center of the triangle, there is no great difference from the actual position of the center of gravity, and there is practically no problem. Although not shown in the drawings, if the centers of four or more contours are calculated as needed, there is no problem if the virtual center of gravity is determined at the center of the polyhedron connecting the centers. In addition, the number of measurement points of the outer dimension on the contour for determining the desired rotation center and the total number of attention points on the contour for determining the virtual center of gravity need not be the same. From the required accuracy, it is more practical to increase the total number of points of interest on the contour for determining the virtual center of gravity than the measurement points of the outer dimensions on the contour for determining the desired rotation center. (See FIGS. 5 and 14).

述上の如き供給態様によれば、原木の回転芯が、原木供給装置の原木把持機構を構成する左右一対の把持部材の伸縮方向に対して平行状となる状態であって、且つ、原木の長さ方向の中央部に対して略同等の適宜距離だけ離れた少なくとも左右各一箇所の輪郭に適合する仮想重心と、前記回転芯に適応する部位に把持爪を介入させる際の各把持部材の先端部とが、可及的に接近し得る状態に至るまで、挟持した原木を追加的に回転させてから、回転を停止させ、次いで、前記回転芯に適応する部位を、各把持部材の把持爪によって把持し直すものであるから、原木の自重に起因する慣性力が、把持爪が介入する部位に作用する際の、力のモーメントの多寡に拘わる位置ベクトルを、常に最小に留めることができて、当初の原木の把持姿勢がそのまま維持し易く、従前よりも一段と安定的に精度良く原木を供給することが可能となる。   According to the supply mode as described above, the rotation core of the raw wood is in a state parallel to the expansion / contraction direction of the pair of left and right gripping members constituting the raw wood gripping mechanism of the raw wood supply device, and the raw wood A virtual center of gravity that fits at least one left and right contours that are separated from each other by a substantially equivalent distance from the central portion in the length direction, and each gripping member that interposes a gripping claw at a site that is adapted to the rotating core. Further rotate the sandwiched log until the tip is as close as possible to the tip, stop the rotation, and then grip the part that fits the rotating core to the grip of each gripping member Since the gripping force is re-gripped by the nail, the position vector related to the amount of moment of force when the inertial force due to the weight of the log acts on the part where the gripping nail intervenes can always be kept to a minimum. The initial gripping posture of the raw wood Easily maintained, it is possible to supply a more stable and precisely timber than before.

次に、先に説明を保留した、移動梁（及び原木）の別の移動態様について説明すると、先記図１３の例に代えて、図１６に例示する如く、保持部材１５共々移動梁１７を、仮芯用のスピンドル３・３ａの真上（保持部材１５が保持する把持部材１２の真ん中が、仮芯用のスピンドル３・３ａの中心軸ｊを通る垂線上に位置する位置）まで移動させる態様を採ることも可能であり、図からも明らかな如く、斯様な態様を採る場合であっても、保持部材１５共々移動梁１７を移動させる際の、所要移動距離Ｌｘとしては、前記実施例の場合と同じ数式、所要移動距離Ｌｘ＝Ｌ−Δｘ（但し、回転芯の位置が、図示例とは対称状となる場合については、所要移動距離Ｌｘ＝Ｌ＋Δｘ）によって算出することができ、実用的には格別支障なく、把持した原木をベニヤレースに供給することができる。   Next, another movement mode of the moving beam (and log) whose explanation has been suspended will be described. Instead of the example of FIG. 13, the holding beam 15 and the moving beam 17 are moved together as shown in FIG. , To the position just above the temporary spindle 3 · 3a (the position where the middle of the gripping member 12 held by the holding member 15 is on the vertical line passing through the central axis j of the temporary spindle 3 · 3a). As is apparent from the drawing, the required moving distance Lx for moving the moving beam 17 together with the holding member 15 is the above-described implementation. The same mathematical formula as in the example, required travel distance Lx = L−Δx (however, when the position of the rotational core is symmetrical to the illustrated example, the required travel distance Lx = L + Δx) can be calculated, Practically held without any problem Raw wood can be supplied to the veneer lace.

尚、図１１・図１２・図１３・図１６に例示する如く、原木Ｇ１の両木口面に於ける回転芯Ｎ１の末端部ｎ１・ｎ２から、ベニヤレースのスピンドル２２の半径ｒに最少安全保障間隔αを加算して算出される、所定距離Ｚだけ離れた部位を、回転芯Ｎ１に適応する部位として、該部位に、各把持部材１２の把持爪１２ａを介入させる態様によれば、ベニヤレースのスピンドル２２と把持部材１２の先端部との衝突を確実に回避する制約条件下に於て、原木Ｇ１の自重の慣性力に伴うモーメントの作用が、最も少なくなるので好ましいが、仮に前記所定距離よりも幾分多い（長い）距離の別の部位に、各把持部材の把持爪を介入させる態様であっても、前記仮想重心と、前記次善の部位に把持爪を介入させる際の各把持部材の先端部とが、可及的に接近し得る状態に至るまで、挟持した原木を追加的に回転させる構成による作用・効果は、相応に奏されるので（対称的な状態に回転を留めた場合と比較すれば、やはり、モーメントの作用が少ない）有効である。   As shown in FIGS. 11, 12, 13, and 16, the radius r of the spindle 22 of the veneer race is minimized from the end portions n1 and n2 of the rotary core N1 on both ends of the log G1. According to an aspect in which a part calculated by adding the interval α and separated by a predetermined distance Z is a part that is adapted to the rotary core N1, and the gripping claws 12a of each gripping member 12 are intervened in the part. This is preferable because the action of the moment due to the inertia force of the weight of the log G1 is minimized under a constraint condition that reliably avoids a collision between the spindle 22 of the workpiece and the tip of the gripping member 12. Even when the gripping claw of each gripping member is intervened in another part of a slightly longer (longer) distance than the above, each gripping when the gripping claw is intervened in the virtual center of gravity and the second-best part The tip of the member is as much as possible Since the action and effect of the structure that additionally rotates the sandwiched raw wood until the state where it can be approached, the effect is achieved accordingly (compared with the case where the rotation is kept in a symmetric state, the moment is still Is effective).

而して、先述の通り、仮芯用のスピンドルの太さを、ベニヤレースのスピンドルの太さに比べて一段と細くしておけば、所望の回転芯の方向や所在位置が、仮軸芯の方向や所在位置と、相当に異なっていても、前記所定距離だけ離れた部位を、把持部材の把持爪によって把持することが不能化する虞は殆どないが、稀に、図１７（イ）に例示する如く、所望の回転芯Ｎ３、及び重心Ｑ３が図示する状態にある原木Ｇ３に於て、前記回転芯Ｎ３の一方の末端部ｎ３から所定距離Ｚ（＝ｒ＋α）だけ離れた部位に、把持部材１２の把持爪（１２ａ）を介入させんとすると、把持部材１２の先端部が仮芯用のスピンドル３に衝突する虞が生じる場合が有り得るので、この場合に限っては、例外的に、図１７（ロ）に例示する如く、ベニヤレースのスピンドル２２の半径ｒに最少安全保障間隔αよりも幾分広い間隔β（＞α）を加算して算出される、特例距離Ｚｅ（＝ｒ＋β）だけ離れた部位に、把持部材１２の把持爪（１２ａ）を介入させて、原木Ｇ３を把持する必要がある。   Thus, as described above, if the thickness of the spindle for the temporary core is made thinner than the thickness of the spindle of the veneer lace, the desired direction and location of the rotary core can be Even if it is considerably different from the direction and the location, there is almost no possibility that it becomes impossible to grip the part separated by the predetermined distance by the gripping claws of the gripping member. As illustrated, in the log G3 in which the desired rotary core N3 and the center of gravity Q3 are in the state shown in the figure, a grip is held at a site separated by a predetermined distance Z (= r + α) from one end portion n3 of the rotary core N3. If the gripping claws (12a) of the member 12 are to be intervened, there is a possibility that the tip of the gripping member 12 may collide with the spindle 3 for temporary cores. As illustrated in Fig. 17 (b), the veneer race The gripping claw of the gripping member 12 (at a distance of a special distance Ze (= r + β), which is calculated by adding an interval β (> α) somewhat larger than the minimum security interval α to the radius r of the handle 22. 12a) needs to intervene to grasp the log G3.

因に、仮芯用のスピンドルの太さを、ベニヤレースのスピンドルの太さに比べて一段と細くする具体的数値については、ベニヤレースのスピンドルの太さの具体的数値のみならず、仮芯用のスピンドルに最低限度必要な剛性、処理対象となる全ての原木の性状、回転芯の定め方等々の諸条件に対応させて、変えても差支えないので、必ずしも一概には定められないが、ベニヤレースのスピンドルに対して、直径で１０ｍｍ〜４０ｍｍ程度細くするのが一応の目安であり、普遍的には、仮芯用のスピンドルに最低限度必要な剛性に基づいて、所要直径の具体値数値を定めても、単に原木を空転させ得る剛性があれば足りるので、ベニヤレースのスピンドルの太さに比べて一段と細くなるのは当然であり、実用的には格別支障ない。   By the way, as for the concrete numerical value that makes the thickness of the spindle for the temporary core thinner than the spindle thickness of the veneer lace, not only the specific numerical value of the thickness of the spindle of the veneer lace but also for the temporary core It can be changed according to various conditions such as the minimum necessary rigidity of the spindle, the properties of all raw wood to be processed, the method of determining the rotation core, etc. It is a rough guide to reduce the diameter of the race spindle by about 10mm to 40mm. Universally, the specific value of the required diameter is calculated based on the minimum required rigidity of the spindle for the temporary core. Even if it is determined, it is sufficient to have rigidity that can simply spin the log, so it is natural that the thickness of the veneer lace spindle becomes thinner, which is practically no problem.

尚、本発明に係る原木の供給方法の実施に用い得る一連の装置類の構成としては、前記各実施例の構成に限るものではなく、各装置・各機構について、以下に述べる如く、種々の設計変更例が挙げられる。   The configuration of a series of devices that can be used to implement the method for supplying raw wood according to the present invention is not limited to the configuration of each of the above embodiments, and various devices and mechanisms are described as follows. Examples of design changes are given.

即ち、前記図示例は、原木の両木口面に対向する位置に備えた左右一対のカメラによって、原木の両木口面の仮定直径（及び仮想半径）を算定すると共に、算定した各仮定半径の中心同士を結ぶ線に相当する原木の仮軸芯を、仮芯用のスピンドルの中心軸と同じ高さに合わせる構成であるが、その外にも、図示は省略したが、例えば原木支持部材によって支持されて上昇過程にある原木の上部外周部の到来と下部外周部の通過とを検出する前後一対の外周検出器を、原木の両木口面付近に夫々水平状に二対配設して、前記外周検出器による上部外周部の到来信号と下部外周部の通過信号の発信時間差と、原木支持部材の上昇速度とから、原木の両木口面付近の仮想直径（及び仮想半径）を算出すると共に、仮芯用のスピンドルの中心軸と前記外周検出器の間隔と、前記外周検出器による下部外周部の通過信号の発信時期とから、原木の仮軸芯を、仮芯用のスピンドルの中心軸と同じ高さにまで上昇させるに足る、所要の上昇期間を算出し、該所要の上昇期間だけ、追加的に原木支持部材（原木）の上昇を継続させる構成であっても差支えなく、或は例えば仮芯用のスピンドルの中心軸を中心として、相互に同期的に接近・離隔する、上下対称状の原木芯出し部材を、原木の両木口面付近に夫々各一対配設し、該上下対称状の原木芯出し部材によって、原木を上下から挟持する構成であっても差支えなく、要は、原木の仮軸芯を、仮芯用のスピンドルの中心軸と同じ高さに合わせ得る機能を奏し得る構成であれば足りる。   In other words, in the illustrated example, the assumed diameter (and virtual radius) of the both ends of the raw wood is calculated by a pair of left and right cameras provided at positions facing the both ends of the raw wood, and the center of each calculated assumed radius is calculated. The temporary shaft core of the raw wood corresponding to the line connecting them is set to the same height as the central axis of the spindle for the temporary core, but the illustration is omitted, but it is supported by, for example, a raw wood support member A pair of front and rear perimeter detectors for detecting the arrival of the upper perimeter of the raw wood and the passage of the lower perimeter in the ascending process are arranged in two horizontal pairs in the vicinity of both log mouths of the raw wood, While calculating the virtual diameter (and virtual radius) near the two log ends of the log, from the difference between the time of arrival of the incoming signal of the upper peripheral part and the passing signal of the lower peripheral part by the peripheral detector and the rising speed of the log support member, The central axis of the spindle for the temporary lead and the above From the interval of the circumference detector and the transmission timing of the passing signal of the lower outer circumference by the circumference detector, it is sufficient to raise the temporary axis of the raw wood to the same height as the central axis of the spindle for the temporary core. There may be a configuration in which the required rising period is calculated, and the rising of the log support member (raw wood) is continued only during the required rising period, or the center axis of the spindle for the temporary core, for example, is centered. As shown in the figure, a pair of vertically symmetrical log centering members, which are synchronously approaching and separating from each other, are arranged in the vicinity of both log mouths, and the log is vertically moved by the vertically symmetrical log centering members. There is no problem even if it is a configuration sandwiched between the two, and in short, any configuration that can perform the function of adjusting the temporary axis of the raw wood to the same height as the central axis of the spindle for the temporary core is sufficient.

また、前記図示例の原木芯出し方法は、原木の比較的少数箇所（３箇所）の外郭寸法を計測することによって、仮軸芯を中心とする立体形状を概算する態様であるが、その外にも、図示は省略したが、例えば「原木の３次元形状測定装置および方法」（特開２０１０−１１２８１１号公報）に開示される如く、仮軸芯に対して平行状に、且つ、外周撮影用のカメラを中央として対称的に原木の外周面へ照射した二条の線状光線を、原木が適宜角度づつ回転する毎に、前記カメラによって撮影すると共に、撮影した画像に適宜の画像処理、即ち、原木外周部上に於ける前記二条の線状光線の検出位置と仮軸芯の位置とカメラの位置との相対的な位置関係から、仮軸芯から所望の原木外周部までの半径寸法を算出する画像処理を施して、仮軸芯を中心とする立体形状を概算する態様によれば、一段と詳細な原木の立体形状を算定して、所望の回転芯や仮想重心を定めることが可能となる。   Further, the raw wood centering method of the illustrated example is an aspect in which a three-dimensional shape centering on the temporary shaft core is approximated by measuring outline dimensions of relatively few places (three places) of the raw wood. Although not shown, for example, as disclosed in “3D shape measuring apparatus and method of raw wood” (Japanese Patent Laid-Open No. 2010-112811), the outer periphery is photographed parallel to the temporary axis. The two linear rays of light irradiating the outer surface of the log symmetrically with the camera for the center as the center are photographed by the camera each time the log is rotated at an appropriate angle, and the image taken is subjected to appropriate image processing, From the relative positional relationship between the detection position of the two linear light rays on the outer circumference of the log and the position of the temporary axis and the position of the camera, the radius dimension from the temporary axis to the desired log outer circumference is determined. Apply the image processing to calculate, the temporary axis According to an aspect to estimate the three-dimensional shape of the heart, and calculates the three-dimensional shape of the more detailed timber, it is possible to determine the desired rotational core or virtual center of gravity.

また、前記図示例に於ては、原木供給装置の原木把持機構を構成する把持部材を、水平方向に往復移動させる、所謂、水平移動式の原木移動機構を原木供給装置に備えており、該水平移動式の原木把持機構は、総じて、重量級の原木の供給に適するとされる反面、供給の迅速性に欠ける懸念があり、軽量級の原木の迅速な供給には、後述する如く、把持部材を振子状に揺動させる、揺動式の原木移動機構を備えた原木供給装置が適する。   In the illustrated example, the log supply device is provided with a so-called horizontal movement type log moving mechanism that reciprocates the holding member constituting the log holding mechanism of the log supply device in the horizontal direction. Although the horizontal moving type log grasping mechanism is generally suitable for the supply of heavy weight logs, there is a concern that the supply speed is insufficient. A log supply device equipped with a swinging type log moving mechanism that swings the member in a pendulum shape is suitable.

即ち、図１８・図１９に例示した一連の装置類は、先記実施例に於ける原木供給装置Ｂに代えて原木供給装置Ｅを配設したものであり、該原木供給装置Ｅは、ガイドレール３７ａを付設した揺動梁３７、先記実施例と同じ原木芯出し装置Ａの基台４とベニヤレースＣとの間に架設されており、左右一対の支持軸３９及び軸受４０を介して、前記揺動梁３７を揺動可能に支持する左右一対の支持枠３８、いずれか片側（図示例は左側）の支持軸３９に嵌装したウォームホィール４１、該ウォームホィール４１と噛合うウォーム（図示省略）を介して、前記揺動梁３７を振子状に揺動させる回転検出器４２ａ付の駆動源４２等から成る原木移動機構ｅ２を、先記実施例に於ける原木供給装置Ｂの原木移動機構ｂ２に代えて備えると共に、先記実施例に於ける原木供給装置Ｂの原木把持機構ｂ１と同様に、把持爪３２ａを有する把持部材３２、回転検出器３４ａを具備した駆動源３４によって回転させられる螺子３３、把持部材３２を保持する保持部材３５、保持部材３５を相互に接近・離隔させる挟持作動部材３６等から成る原木把持機構ｅ１を、前記原木移動機構ｅ２の揺動梁３７に付設して構成したものであり、原木の具体的な供給態様については、先記実施例に於ける原木供給装置Ｂの場合と同様に、大別して二通りあるので、先に、保持部材共々揺動梁を、原木の回転芯に対応する位置に揺動させる態様から説明する。   That is, the series of devices illustrated in FIGS. 18 and 19 are provided with a log supply device E in place of the log supply device B in the previous embodiment, and the log supply device E is a guide. The swinging beam 37 provided with the rail 37a is installed between the base 4 and the veneer race C of the same wood log centering apparatus A as in the previous embodiment, via a pair of left and right support shafts 39 and bearings 40. A pair of left and right support frames 38 that swingably support the swing beam 37, a worm wheel 41 fitted to a support shaft 39 on one side (left side in the illustrated example), and a worm meshing with the worm wheel 41 ( The log moving mechanism e2 including the drive source 42 with the rotation detector 42a that swings the swinging beam 37 in a pendulum shape via the swinging beam 37 is omitted from the log of the log supply apparatus B in the previous embodiment. In place of the moving mechanism b2 In the same manner as the log holding mechanism b1 of the log supply apparatus B in FIG. 2, a holding member 32 having a holding claw 32a, a screw 33 rotated by a drive source 34 having a rotation detector 34a, and a holding member for holding the holding member 32 35, a log gripping mechanism e1 composed of a clamping operation member 36 or the like for moving the holding member 35 closer to or away from each other is attached to the swinging beam 37 of the log moving mechanism e2, The supply mode is roughly divided into two types, as in the case of the log supply device B in the previous embodiment. First, the swinging beam together with the holding member is swung to a position corresponding to the rotation core of the log. It demonstrates from the aspect made to move.

而して、図２０に例示する如く、図示しない制御装置は、図示する位置に仮想重心Ｑ４を有する原木Ｇ４について、先記実施例の態様（図１１乃至図１３参照）に準じて、原木芯出し装置Ａを介して、仮軸芯Ｍ４を中心に一回転させ、一方の末端部ｎ５と他方の末端部ｎ６とが夫々図示する位置に在る回転芯Ｎ４を定めたら、該回転芯Ｎ４の仮想延長線ｆ３上に、原木供給装置Ｅの原木移動機構ｅ２を構成する支持軸３９の中心軸ｔが位置する状態（把持された原木Ｇ４が揺動させられる際に、回転芯Ｎ４の方向が、いずれの位置に於ても常に揺動軌跡の法線と一致する状態、つまり、原木の移動方向と直交方向に向く状態）であり、且つ、仮想重心Ｑ４と、回転芯Ｎ４に適応する部位に把持爪（３２ａ）を介入させる際の各把持部材３２の先端部とが、可及的に接近し得る状態に至るまで、駆動源１０を介して、原木Ｇ４を追加的に回転させた後に、回転を停止させる。   Thus, as illustrated in FIG. 20, the control device (not shown) uses the log core for the log G4 having the virtual center of gravity Q4 at the position shown in accordance with the aspect of the previous embodiment (see FIGS. 11 to 13). When the rotating core N4 is determined by rotating the rotating shaft N4 about the temporary shaft core M4 through the unloading device A so that the one end portion n5 and the other end portion n6 are in the illustrated positions, respectively. A state where the central axis t of the support shaft 39 constituting the log moving mechanism e2 of the log supply device E is positioned on the virtual extension line f3 (when the gripped log G4 is swung, the direction of the rotary core N4 is In any position, the position always coincides with the normal line of the swinging locus, that is, the direction that is orthogonal to the moving direction of the original wood), and the portion that is adapted to the virtual center of gravity Q4 and the rotation center N4 Of each gripping member 32 when the gripping claws (32a) are caused to intervene And end, up to the state can approach as much as possible, via the drive source 10, after additionally rotating the timber G4, to stop the rotation.

また一方、図示しない制御装置は、原木Ｇ４の回転芯Ｎ４を定めたら、追加的な回転を停止させる制御と併せて、速やかに、駆動源４２を介して、保持部材３５共々揺動梁３７を、実線で示した待機位置から、所望の把持実施位置、例えば図２０の左側に点線で示す如く、停止状態にある原木Ｇ４の回転芯Ｎ４の仮想延長線ｆ３上に、保持部材３５が保持する把持部材３２の真ん中が位置する位置に揺動させると共に、一方の把持部材３２の下端部と回転芯Ｎ４の一方の末端部ｎ５との距離、及び他方の把持部材３２の下端部と回転芯Ｎ４の他方の末端部ｎ６との距離が、夫々ベニヤレースＣのスピンドル２２の半径ｒに最少安全保障間隔αを加算して算出される、所定距離Ｚ（＝ｒ＋α）となる状態に至るまで、駆動源３４を介して、左右の把持部材３２を個別に変位させ、更に、挟持作動部材３６を介して、各保持部材３５を相互に接近させることにより、停止状態にある原木Ｇ４の把持を実施すると共に、原木芯出し装置Ａの進退部材７を介して、仮芯用のスピンドル３・３ａを原木Ｇ３の端面から離隔させることにより、原木Ｇ４の挟持を開放する。   On the other hand, when the control unit (not shown) determines the rotation core N4 of the log G4, the control unit quickly stops the swinging beam 37 together with the holding member 35 via the drive source 42 together with the control to stop the additional rotation. From the standby position indicated by the solid line, the holding member 35 holds the desired gripping execution position, for example, on the virtual extension line f3 of the rotation core N4 of the log G4 in the stopped state as indicated by the dotted line on the left side of FIG. While swinging to a position where the middle of the gripping member 32 is located, the distance between the lower end portion of one gripping member 32 and one end portion n5 of the rotary core N4, and the lower end portion of the other gripping member 32 and the rotary core N4. Until the distance from the other end portion n6 of the Vn is a predetermined distance Z (= r + α) calculated by adding the minimum security interval α to the radius r of the spindle 22 of the veneer race C. Left and right through source 34 The holding member 32 is individually displaced, and the holding members 35 are brought close to each other via the clamping operation member 36, thereby holding the log G4 in the stopped state and the log centering device A. The holding of the log G4 is released by separating the spindle 3 · 3a for temporary core from the end surface of the log G3 via the advance / retreat member 7.

然る後に、図示しない制御装置は、駆動源４２を介して、保持部材３５共々揺動梁３７を、ベニヤレースのスピンドル２２に対応する供給位置、即ち、支持軸３９の中心軸ｔとスピンドル２２の中心軸ｋとを結ぶ仮想線ｆ２上に把持部材３２の真ん中が位置する位置へ連続的（又は間歇的）に揺動させるが、この場合の所要揺動角度θｘとしては、支持軸３９の中心軸ｔと仮芯用のスピンドル３・３ａの中心軸ｊとを結ぶ仮想線をｆ１とし、仮想線ｆ１と前記仮想線ｆ２との挟角をθ、仮想線ｆ１と前記仮想延長線ｆ３との挟角をΔθとすると、次の数式、所要揺動角度θｘ＝θ―Δθによって算出することができる（但し、回転芯の位置が、図示例とは対称状となる場合については、所要揺動角度θｘ＝θ＋Δθとなる）。   Thereafter, the control device (not shown) supplies the swinging beam 37 together with the holding member 35 via the drive source 42 to the supply position corresponding to the spindle 22 of the veneer race, that is, the central axis t of the support shaft 39 and the spindle 22. Oscillates continuously (or intermittently) to a position where the center of the gripping member 32 is located on an imaginary line f2 connecting with the central axis k. The required swing angle θx in this case is as follows. An imaginary line connecting the center axis t and the center axis j of the temporary spindles 3 and 3a is defined as f1, the angle between the imaginary line f1 and the imaginary line f2 is θ, the imaginary line f1 and the imaginary extension line f3 Can be calculated by the following formula, required swing angle θx = θ−Δθ (however, if the position of the rotation core is symmetrical to the illustrated example, the required swing angle is (Moving angle θx = θ + Δθ).

また更に、図示しない制御装置は、保持部材３５共々揺動梁３７を、前記供給位置へ揺動させる過程に於て、左右の把持部材３２を個別に所要長さだけ伸長或は縮小させることにより、支持軸３９の中心軸ｔと回転芯Ｎ４の末端部ｎ５との間隔、及び支持軸３９の中心軸ｔと回転芯Ｎ４の末端部ｎ６との間隔が、いずれも、支持軸３９の中心軸ｔとベニヤレースＣのスピンドル２２の中心軸ｋとの間隔と同等になるよう調整し、最終的に、回転芯Ｎ４の高さをスピンドル２２の中心軸ｋの高さに一致させる。   Still further, a control device (not shown) extends or contracts the left and right gripping members 32 individually by a required length in the process of swinging the swinging beam 37 together with the holding member 35 to the supply position. The distance between the center axis t of the support shaft 39 and the end portion n5 of the rotating core N4 and the distance between the center axis t of the support shaft 39 and the end portion n6 of the rotating core N4 are both the center axis of the support shaft 39. Adjustment is made to be equal to the distance between t and the center axis k of the spindle 22 of the veneer race C, and finally the height of the rotary core N4 is made to coincide with the height of the center axis k of the spindle 22.

斯様な揺動式の原木移動機構を用いた供給態様によっても、把持部材の先端部とベニヤレースのスピンドルとの衝突を適確に回避しつつ、原木の自重に起因する慣性力が、把持爪を介入させる部位に作用する際の、力のモーメントの多寡に拘わる位置ベクトルを、常に最小に留めることができて、当初の原木の把持姿勢がそのまま維持し易く、従前よりも一段と安定的に精度良く原木を供給することが可能となる。   Even with such a supply mode using a rocking-type log moving mechanism, the inertial force due to the weight of the log can be grasped while accurately avoiding the collision between the tip of the gripping member and the spindle of the veneer race. The position vector related to the amount of moment of force when acting on the part where the nail is intervened can always be kept to the minimum, it is easy to maintain the gripping posture of the original raw wood as it is, more stable than before It becomes possible to supply logs with high accuracy.

因に、揺動梁の別の揺動態様としては、図２１に例示する如く、保持部材３５共々揺動梁３７を、仮芯用のスピンドル３・３ａに対応する位置、即ち、支持軸３９の中心軸ｔと仮芯用のスピンドル３・３ａの中心軸ｊとを結ぶ仮想線ｆ１上に、保持部材３５が保持する把持部材３２の真ん中が位置する位置まで揺動させる態様を採ることも可能であり、図からも明らかな如く、斯様な態様を採る場合であっても、保持部材３５共々揺動梁３７を揺動させる際の、所要揺動角度θｘとしては、前記実施例の場合と同じ数式、所要揺動角度θｘ＝θ―Δθ（但し、回転芯の位置が、図示例とは対称状となる場合については、所要揺動角度θｘ＝θ＋Δθ）によって算出することができ、実用的には格別支障なく、把持した原木をベニヤレースに供給することができる。但し、斯様な供給態様を採る場合に於ては、供給位置の精度の正確性からして、原木Ｇ４の回転芯Ｎ４の方向を、下方に付加した延長補助線ｆ４で示す如く、先記仮想線ｆ１と平行方向に向けると共に、仮想線ｆ３の方向は、回転芯Ｎ４の線上であって、支持軸３９の中心軸ｔから仮芯用のスピンドル３・３ａの中心軸ｊまでの距離と同等距離にある点と、支持軸３９の中心軸ｔとを結ぶ方向に定めるのが望ましい。   Incidentally, as another swinging mode of the swinging beam, as shown in FIG. 21, the holding member 35 and the swinging beam 37 are placed at positions corresponding to the spindles 3 and 3a for temporary cores, that is, the support shaft 39. It is also possible to adopt a mode of swinging to a position where the center of the gripping member 32 held by the holding member 35 is positioned on an imaginary line f1 connecting the center axis t of the holding core 35 and the center axis j of the spindle 3 for temporary core 3a. As is apparent from the drawing, even when such a mode is adopted, the required swing angle θx for swinging the swing beam 37 together with the holding member 35 is the same as that of the above embodiment. It can be calculated by the same mathematical expression as the case, the required swing angle θx = θ−Δθ (where the rotational center position is symmetrical to the illustrated example, the required swing angle θx = θ + Δθ), Practically, the gripped log is supplied to the veneer lace without any particular hindrance. Door can be. However, in the case of adopting such a supply mode, the direction of the rotation core N4 of the log G4 is indicated by the extension auxiliary line f4 added below in view of the accuracy of the supply position. The direction of the imaginary line f3 is parallel to the imaginary line f1, and the direction of the imaginary line f3 is the distance from the center axis t of the support shaft 39 to the center axis j of the temporary core spindles 3 and 3a. It is desirable to determine in a direction connecting a point at an equal distance and the central axis t of the support shaft 39.

勿論、斯様な揺動式の原木移動機構を用いる場合であっても、例えば図２２に例示する如く、所望の回転芯Ｎ５、及び重心Ｑ５が図示する状態にある原木Ｇ５に於て、前記回転芯Ｎ５の他方の末端部ｎ８から所定距離Ｚ（＝ｒ＋α）だけ離れた部位に、把持部材３２の把持爪（３２ａ）を介入させんとすると、把持部材３２の先端部が仮芯用のスピンドル３ａに衝突する虞が生じる場合が稀には有り得るので、この場合には、やはり、図示する如く、例外的に、ベニヤレースのスピンドル２２の半径ｒに最少安全保障間隔αよりも幾分広い間隔β（＞α）を加算して算出される、特例距離Ｚｅ（＝ｒ＋β）だけ離れた部位に、把持部材３２の把持爪（３２ａ）を介入させて、原木Ｇ５を把持する必要がある。   Of course, even when such a swinging log moving mechanism is used, as shown in FIG. 22, for example, in the log G5 in which the desired rotary core N5 and the center of gravity Q5 are in the state shown in the drawing, If the gripping claw (32a) of the gripping member 32 is intervened at a position away from the other end n8 of the rotary core N5 by a predetermined distance Z (= r + α), the tip of the gripping member 32 is used for the temporary core. In some cases, there is a possibility that the spindle 3a may collide. In this case, as shown in the drawing, the radius r of the spindle 22 of the veneer race is exceptionally wider than the minimum security interval α. It is necessary to grasp the log G5 by intervening the grasping claw (32a) of the grasping member 32 at a part separated by a special distance Ze (= r + β) calculated by adding the interval β (> α).

尚、前記各実施例に於ては、把持部材を介して把持した原木をベニヤレースへ供給する際に、各原木の回転芯の高さを、単にスピンドルの中心軸の高さに一致させるよう、保持部材に対する把持部材の突出長さを、所要長さだけ左右各別に伸長若しくは縮小させる態様としたが、例えば先記特許文献３の図２３〜図２７等に開示される如く、原木芯出し装置とベニヤレースのスピンドルとの間に、バックアップロール等の如き原木供給の障害となる部材が存在する場合など、原木と他の部材との衝突を回避する必要がある場合には、図示は省略したが、把持した原木をベニヤレースへ供給する過程に於て、一時的に、障害となる部材との衝突を回避し得る位置まで、把持した原木を過剰に変位（上昇）させるよう、保持部材に対する把持部材の突出長さを、暫時余分に縮小させると共に、衝突が回避可能な位置を過ぎた以降に、各原木の回転芯の高さを、スピンドルの中心軸の高さに一致させるよう、保持部材に対する把持部材の突出長さを、所要長さだけ左右各別に伸長させる態様を採ることも可能である。   In each of the above embodiments, when the raw wood grasped via the grasping member is supplied to the veneer race, the height of the rotation core of each raw wood is simply made to coincide with the height of the center axis of the spindle. The protruding length of the gripping member with respect to the holding member is extended or reduced by the required length separately for each of the left and right. For example, as disclosed in FIG. 23 to FIG. The illustration is omitted when it is necessary to avoid the collision between the log and other members, such as when there is a member that interferes with the supply of log, such as a backup roll, between the machine and the veneer spindle. However, in the process of supplying the grasped raw wood to the veneer race, the holding member is temporarily displaced (raised) to a position where the collision with the obstacle member can be avoided temporarily. Gripping member against Holding the holding member so that the projecting length is excessively reduced for a while and the height of the rotation core of each log is matched with the height of the center axis of the spindle after the position where the collision can be avoided. It is also possible to adopt a mode in which the protruding length of the member is extended to the left and right by the required length.

また、前記各実施例からも明らかな如く、原木の回転芯の向きを、原木の移動方向と直交方向に向けた状態として、原木を把持するようにすれば、原木の把持態様の如何に拘わらず、原木の所要移動距離（所要揺動角度）は、前記各数式によって求められる値に定まるので、前記各実施例に於ける各二通りの把持態様とは異なる態様（例えば仮芯用のスピンドルと原木の回転芯との中間部の上方を把持する態様）を採ることも可能ではあるが、把持位置及び把持開放位置の算定を含めた、位置制御の容易性からすると、前記各実施例に於ける各二通りの把持態様を採るのが実用的である。   Further, as is clear from each of the above-described embodiments, if the raw wood is gripped with the orientation of the rotation core of the raw wood oriented in a direction orthogonal to the moving direction of the raw wood, regardless of how the raw wood is held. First, since the required travel distance (required swing angle) of the raw wood is determined by the values obtained by the above-described formulas, a mode (for example, a spindle for a temporary core) different from each of the two grip modes in each of the above embodiments. It is also possible to adopt a mode in which the upper part of the middle part of the raw wood and the rotation core of the raw wood is gripped. However, from the viewpoint of ease of position control including calculation of the gripping position and the gripping release position, It is practical to adopt each of the two gripping modes.

また、前記各実施例に例示する如く、適数個の楔状の把持爪を先端部に有する把持部材を用いれば、原木の重心に比較的近い位置を重点的に把持し得るので、供給姿勢の安定化に有益であるが、把持爪の形状としては、斯様な楔状に限るものではなく、図示は省略したが、例えば円錐状、先端部を円錐状とした円柱状、角錐状、円周方向に於て２分割〜４分割した穴抜きポンチ状等々、従来公知の種々の形状が適用可能であり、また、必要に応じては、把持部材の先端部に付設した把持爪と同形状又は別形状の把持爪を、先端部以外の部分へ追加的に付設して成る把持部材を用いても差支えない。   In addition, as illustrated in each of the above embodiments, if a gripping member having an appropriate number of wedge-shaped gripping claws at the tip portion is used, a position relatively close to the center of gravity of the raw wood can be gripped, so the supply posture Although it is useful for stabilization, the shape of the gripping claw is not limited to such a wedge shape and is not shown in the figure, but for example, a conical shape, a cylindrical shape with a conical tip, a pyramid shape, a circumferential shape, etc. Various known shapes such as a punched punch shape divided into two to four in the direction can be applied, and if necessary, the same shape as the gripping claw attached to the tip of the gripping member or A gripping member formed by additionally attaching a gripping claw having a different shape to a portion other than the tip portion may be used.

また、図１８・図１９の実施例は、原木芯出し装置ＡとベニヤレースＣとの中間上方に於て、原木移動機構ｅ２の揺動梁３９を枢支し、保持部材３５を吊り下げて揺動させる形態であって、全体構造の簡易性、屑処理の容易性、不良原木を排除する利便性、バックアップロール等の如き原木供給の障害となる部材が付設されいるベニヤレースへの原木供給の容易性等に優れるが、原木供給の障害となる部材が付設されていないベニヤレースへ原木を供給する場合であれば、図示は省略したが、原木芯出し装置とベニヤレースとの中間下方に於て、原木移動機構の揺動梁を枢支し、保持部材を上向きに付設して揺動させる形態に変更することも、然程困難ではない。   Further, in the embodiment of FIGS. 18 and 19, the rocking beam 39 of the log moving mechanism e2 is pivotally supported and the holding member 35 is suspended at an intermediate upper position between the log centering device A and the veneer race C. Supply of logs to veneer laces that are rocked and that are easy to handle the whole structure, easy to dispose of scraps, convenient to eliminate defective logs, and are equipped with members that obstruct the supply of logs such as backup rolls Although not shown in the case of supplying raw wood to a veneer lace that is not provided with a member that obstructs the supply of raw wood, the illustration is omitted, but in the middle lower part between the raw wood centering device and the veneer lace. However, it is not so difficult to change the configuration in which the swinging beam of the log moving mechanism is pivotally supported and the holding member is attached upward to swing.

また、ベニヤレースのスピンドルは、少なくとも当初に供給された原木を挟持することができれば足り、必要に応じて、旋削終期に於てスピンドルによる原木の挟持を暫時開放する、所謂、スピンドルレス切削が可能な形式のベニヤレースにも、本発明に係る原木の供給方法を適用することができる。   In addition, the spindle of the veneer lace is sufficient if it can hold at least the raw wood supplied at the beginning, and if necessary, so-called spindleless cutting is possible in which the holding of the raw wood by the spindle is temporarily released at the end of turning. The method for supplying raw wood according to the present invention can also be applied to various types of veneer laces.

以上明らかな如く、本発明に係る原木の供給方法によれば、従前の原木の供給方法に比べて、一層精度良く原木を供給することが可能となると共に、供給動作の起動時及び停止時の加速度を、従来よりも大きくして、供給能率の向上を図り得る可能性も有しており、斯界に於ける本発明の実施効果は著大である。   As is apparent from the above, according to the method for supplying raw wood according to the present invention, it is possible to supply raw wood with higher accuracy than the conventional method for supplying raw wood, and at the time of starting and stopping the supply operation. There is a possibility that the acceleration can be made larger than before and the supply efficiency can be improved, and the effect of implementing the present invention in this field is remarkable.

Ａ ：原木芯出し装置
Ｂ、Ｅ ：原木供給装置
Ｃ ：ベニヤレース
Ｇ、Ｇ１、Ｇ２、Ｇ３、Ｇ４、Ｇ５ ：原木
Ｍ、Ｍ１ ：原木の仮軸芯
Ｎ、Ｎ１、Ｎ２、Ｎ３、Ｎ４、Ｎ５ ：原木の回転芯
Ｑ ：重心
Ｑ１、Ｑ２、Ｑ３、Ｑ４、Ｑ５ ：仮想重心
１ ：左右一対の原木支持部材
２ ：カメラ
３、３ａ ：仮芯用のスピンドル
７ ：仮芯用のスピンドルの進退作動部材
１０ ：仮芯用のスピンドルの駆動源
１１ ：外形検知器
１２、３２ ：左右一対の把持部材
１２ａ、３２ａ ：把持爪
１４、３４ ：把持部材用の螺子の駆動源
１５、３５ ：左右一対の保持部材
１６、３６ ：保持部材用の挟持作動部材
１７ ：移動梁
１８、３８ ：左右一対の支持枠
２１ ：移動梁用の螺子の駆動源
２２ ：ベニヤレースのスピンドル
３７ ：揺動梁
３９ ：左右一対の支持軸
４２ ：揺動梁用の支持軸の駆動源 A: Log centering device B, E: Log feeding device C: Veneer race G, G1, G2, G3, G4, G5: Log M, M1: Temporary shaft cores N, N1, N2, N3, N4, N5 of log : Rotation core Q of raw wood: Center of gravity Q1, Q2, Q3, Q4, Q5: Virtual center of gravity 1: A pair of left and right raw wood support members 2: Camera 3, 3a: Spindle 7 for temporary core: Advance and retreat operation of spindle for temporary core Member 10: Spindle drive source 11 for temporary core 11: Outline detectors 12 and 32: A pair of left and right grip members 12 a and 32 a: Grip claws 14 and 34: Screw drive sources 15 and 35 for a grip member Holding members 16, 36: Holding member 17 for holding member: Moving beams 18, 38: A pair of left and right support frames 21: Screw drive source 22 for moving beams: Spindle 37 of veneer race: Oscillating beam 39: Left and right A pair of support shafts 42: rocking A driving source of the support shaft for beams

Claims (5)

ベニヤレースの前位に、仮に定めた原木の仮軸芯を、左右一対の仮芯用のスピンドルを以って挟持し、前記仮軸芯を中心として、原木を少なくとも一回転させると共に、適宜の外周検知機構を用いて、少なくとも原木の両木口面乃至は両木口面付近の輪郭を含めた、原木の外周形状を検知し、次いで、検知した外周形状を、所望の回転芯を求める際の主要な条件として採用して、原木の回転芯を算定する機能を具備する原木芯出し装置と、前記仮芯用のスピンドルによって挟持された原木を、左右一対の伸縮自在な把持部材によって把持し直す原木把持機構と、該原木把持機構を、前記原木芯出し装置の仮芯用のスピンドルに対応する位置から、ベニヤレースのスピンドルに対応する位置まで、交互に往復作動させる往復作動機構とを具備する原木供給装置とを備えて、ベニヤレースへ原木を供給するに際し、前記算定した原木の回転芯が、前記原木の一方の木口側から見て、前記把持部材の伸縮方向に対して平行状となる状態で、且つ、原木の長さ方向の中央部に対して略同等の適宜距離だけ離れた少なくとも左右各一箇所の輪郭に適合する仮想重心と、前記回転芯に適応する部位に把持爪を介入させる際の各把持部材の先端部とが、可及的に接近し得る状態に至るまで、挟持した原木を追加的に回転させてから、回転を停止させ、次いで、前記回転芯に適応する部位を、各把持部材の把持爪によって把持し直すことを特徴とするベニヤレースへの原木の供給方法。 At the front of the veneer race, a temporary shaft core temporarily determined is sandwiched between a pair of left and right temporary core spindles, and the raw wood is rotated at least once around the temporary shaft core. The outer periphery detection mechanism is used to detect the outer shape of the raw wood, including at least the two wood front faces or the contours near the front surfaces of the raw wood, and then use the detected outer peripheral shape to obtain a desired rotational core. The raw wood centering device having the function of calculating the rotational core of the raw wood and the raw wood sandwiched by the temporary core spindle is re-gripped by a pair of left and right extendable gripping members. A gripping mechanism; and a reciprocating operation mechanism for alternately reciprocating the log gripping mechanism from a position corresponding to the temporary core spindle of the log centering device to a position corresponding to the spindle of the veneer race. And a timber supply device, when supplying the timber to the veneer lathe, the rotation center of the calculated the timber is, when viewed from one butt end of said timber, a parallel manner with respect to expansion and contraction direction of the gripping member A virtual center of gravity that fits the contour of at least one of the left and right sides separated by an appropriate distance approximately equal to the central portion in the length direction of the raw wood , and a grasping nail that intervenes in the part that adapts to the rotating core The rotation of the sandwiched raw wood is further stopped until the tip of each gripping member can be as close as possible, and then the rotation is stopped. Is regripped by the gripping claws of each gripping member. 原木の両木口面乃至は両木口面付近の輪郭の中心に基づいて、仮想重心を定めて成る請求項１記載のベニヤレースへの原木の供給方法。   2. The method of supplying raw wood to a veneer race according to claim 1, wherein a virtual center of gravity is determined based on a center of the contour of the raw wood. 原木の両木口面乃至は両木口面付近の輪郭の中心と、原木の長さ方向に於ける中央部の輪郭の中心とに基づいて、仮想重心を定めて成る請求項１記載のベニヤレースへの原木の供給方法。   2. The veneer lace according to claim 1, wherein a virtual center of gravity is determined based on a center of the contour of the log at both ends of the log or in the vicinity of the log of the log and a center of the profile at the center in the length direction of the log. How to supply raw wood. 原木の両木口面乃至は両木口面付近の輪郭の中心と、該二箇所の輪郭の内側に於て、略等間隔毎に位置する二箇所以上の輪郭の中心とに基づいて、仮想重心を定めて成る請求項１記載のベニヤレースへの原木の供給方法。   The virtual center of gravity is calculated based on the center of the contours of both the front ends of the raw wood or the vicinity of both front ends and the centers of two or more contours located approximately at equal intervals inside the two contours. 2. A method for supplying raw wood to a veneer lace according to claim 1. 原木の両木口面に於ける回転芯の末端部から、ベニヤレースのスピンドルの半径に最少安全保障間隔を加算して算出される、所定距離だけ離れた部位を、回転芯に適応する部位とし、該部位に各把持部材の把持爪を介入させて、原木を把持して成る請求項１又は請求項２又は請求項３又は請求項４記載のベニヤレースへの原木の供給方法。   The part which is calculated by adding the minimum security interval to the radius of the spindle of the veneer lace from the end part of the rotary core on the both ends of the raw wood is defined as the part adapted to the rotary core. The method for supplying raw wood to the veneer lace according to claim 1, claim 2, claim 3, or claim 4, wherein the raw wood is grasped by interposing a grasping claw of each grasping member at the site.
JP2010231384A 2010-10-14 2010-10-14 Supplying raw wood to veneer lace Active JP5613003B2 (en)

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JPS5751404A (en) * 1980-09-13 1982-03-26 Taihei Seisakusho Kk Method of centering material wood
JPS6017682B2 (en) * 1980-10-06 1985-05-04 株式会社ウロコ製作所 Centering method and charger in veneer lace
JPS61217207A (en) * 1985-03-23 1986-09-26 株式会社　太平製作所 Method and device for centering log
JPS61220802A (en) * 1985-03-28 1986-10-01 株式会社　太平製作所 Method and device for centering and supplying log
JP3569304B2 (en) * 1992-12-22 2004-09-22 株式会社太平製作所 Centering method, centering supply method and apparatus for raw wood
JP4282039B2 (en) * 1998-06-26 2009-06-17 株式会社名南製作所 Log centering and supplying apparatus and log centering and supplying method
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