JP4279943B2

JP4279943B2 - Veneer lace

Info

Publication number: JP4279943B2
Application number: JP13506899A
Authority: JP
Inventors: 勇治荒木
Original assignee: Meinan Machinery Works Inc
Current assignee: Meinan Machinery Works Inc
Priority date: 1999-05-17
Filing date: 1999-05-17
Publication date: 2009-06-17
Anticipated expiration: 2019-05-17
Also published as: JP2000317916A

Description

【０００１】
【発明が属する技術分野】
本発明は、原木から単板を旋削する際、旋削に要する動力を複数の駆動源から原木に供給するベニヤレースに関するものである。
【０００２】
【従来の技術】
図１は原木１０１より単板を旋削するのに要する動力を一対のスピンドル１０３の少なくとも一方と原木１０１の外周から、とにより供給するベニヤレースであり、スピンドル１０３は軸芯方向に進退自在且つ回転自在に構成されている。１０５はスピンドル１０３を回転駆動させるサーボモータ等によるスピンドル用モータであり、１０７はスピンドル１０３の回転数を検出するロータリーエンコーダ等によるスピンドル回転数検出器である。
１０９は鉋台であり、刃物１１１の刃先が原木１０１の回転中心の水平線より若干下に位置するように配備されている。
１１３は回転自在に鉋台１０９に配備されている外周駆動ロールであり、円板状の外周に多数の突刺体１１５を有する適数個の回転部材１１７が駆動軸１１９の軸芯方向に適宜間隔毎に具備されている。更に外周駆動ロール１１３を回転駆動させる一定回転の交流電動機等による外周駆動モータ１２１が鉋台１０９に配備されている。
１２３は、回転部材１１７の適宜間隔内に配備されたプレッシャーバであり、その下端は刃物１１１より単板が旋削される方向の上手の位置にあり、原木１０１と単板との境界付近の原木１０１の表面を押圧している。
１２５は、鉋台１０９を矢印で示す水平方向に移動させるためのボールねじ等による鉋台送りねじであり、鉋台１０９に螺合されている。１２７は、鉋台送りねじ１２５を回転駆動させるサーボモータ等による鉋台送りねじ用モータであり、１２９は一対のスピンドル１０３の軸芯と鉋台１０９に配備されている刃物１１１の刃先との間の距離を検出するロータリーエンコーダ等による鉋台位置検出器である。
【０００３】
１３１は制御器であり、前述の如く構成されているベニヤレースを後述の如く制御する。
まず制御器１３１には、旋削する単板の厚みが入力されていて、また通常の原木を旋削している時の外周駆動モータ１２１の回転数を通常回転数と定めて、該通常回転数のときの回転部材１１７の外周の速さを一定の速さＶ１として決定し、入力されている。
次に制御器は、鉋台位置検出器１２９からの信号で、原木１０１の直径を随時演算すると共に、
該随時演算した原木１０１の直径の時の該原木１０１の外周の速さが、前記一定の速さＶ１と、同一速さになるスピンドル１０３の回転数を随時演算し、スピンドル用モータ１０５で該スピンドル１０３を前記随時演算した回転数で回転させて、スピンドル１０３及び回転部材１１７から原木１０１へ回転力を与える。
同時に、スピンドル回転数検出器１０７からの信号により随時判断したスピンドル１０３の回転数、の１回転当たりに前記単板の厚みに相当する距離だけ、鉋台送りねじ用モータ１２７で鉋台１０９を矢印方向に移動させることにより、刃物１１１の刃先をスピンドル１０３の軸芯に向かって移動させ、原木１０１から設定された厚みの単板を旋削する。
【０００４】
また原木１０１より単板をほぼ一定な速さで旋削させるため、外周駆動ロール１１３を回転駆動させる外周駆動モータ１２１としては、構造が簡単、堅牢、安価で保守が簡単な、一般産業用の動力として広く使われている一定回転の交流電動機が使用されている。
また原木１０１より単板が旋削されると、原木１０１の直径が順次減少していくので、制御器１３１に従って、前記直径の減少に素早く同期してスピンドル１０３の回転数を増加させねばならないので、スピンドル用モータ１０５としては、動力もさることながら、与えられた命令に忠実に、且つできるだけ素早く動けるように工夫されているサーボモータが使用されている。
また、随時変化するスピンドル１０３の回転数の１回転当たりに、素早く同期して、旋削する単板の厚みに相当する距離だけ、鉋台１０９をスピンドル１０３の軸芯に向かって移動させなければならないので、鉋台送りねじ用モータ１２７としては、動力もさることながら、与えられた命令に忠実に、且つできるだけ素早く動けるように工夫されているサーボモータが使用されている。
従来装置では前述のごとく、通常の原木を旋削している時の外周駆動モータ１２１の回転数を通常回転数と定めて、該通常回転数のときの回転部材１１７の外周の速さを一定の速さＶ１と決定し、そして原木１０１の外周の速さが、前記一定の速さＶ１と、同一速さになる様にスピンドル１０３の回転数を制御器１３１で制御していた。
【０００５】
【発明が解決しようとする課題】
しかし、最近は原木の質が低下し、同じ原木１０１に、通常より柔らかい部分、通常より硬い部分、通常の部分、多数の節の部分が混在している。
そして、通常より柔らかい部分は旋削抵抗が軽負荷、通常の部分は旋削抵抗が中負荷、通常より硬い部分又は多数の節の部分は旋削抵抗が重負荷となる。
その結果、図２に示す様に、外周駆動モータ１２１は負荷の度合いによって回転数が変動するのである。例えば、無負荷又は軽負荷の時は略１８００ＲＰＭの定格回転数とすると、中負荷時の回転数は略１７５０ＲＰＭに下がり、重負荷時の回転数は略１７００ＲＰＭに下がるという欠点があった。
【０００６】
従来装置では、単板を旋削しているときの原木１０１の外周の速さは制御器１３１により絶えず一定の速さＶ１になる様にスピンドル用モータ１０５が制御されているので、図１の刃物１１１の刃先部分の拡大図である図３に示す様に、原木１０１の通常の部分を旋削している時は、回転部材１１７の外周の速さは一定の速さＶ１となるので、原木１０１の外周の速さＶ１と同じになり、原木１０１には突刺体１１５の刺さった跡が残る程度である。
ところが、図４に示す様に、通常より硬い部分を旋削し終わり、通常の部分を旋削し始めるとき、外周駆動モータ１２１の立ち上がりがスピンドル用モータ１０５より遅いので、回転部材１１７の外周の速さＶ３は原木１０１の外周の速さＶ１より遅くなり、原木１０１には突刺体１１５の刺さった跡が広げられ、大きなキズＫが残る。
また図５に示す様に、原木１０１の通常より柔らかい部分を旋削している時は、回転部材１１７の外周の速さは一定の速さＶ１より早い速さＶ４となるので、原木１０１の外周の速さＶ１より早くなり、原木１０１には突刺体１１５の刺さった跡が広げられ、大きなキズＫが残る。
前記大きなキズＫが残った単板で合板を製造すると、前記大きなキズにより合板の品質が低下するという問題が発生する。
【０００７】
【課題を解決するための手段】
本発明は、周囲に突刺体を備え、原木の外周に当接され駆動源より回転駆動される突刺回転体と、他の駆動源より回転駆動され原木に当接される少なくとも１個の回転体とにより、
原木を回転させて刃物で単板を旋削するベニヤレースに於いて、
突刺回転体又は少なくとも１個の回転体の前記駆動源の中で最も応答性の遅い駆動源の回転数を検出する回転数検出器と、
原木回転中心より刃物の刃先までの距離を検出する変位検出器と、
前記回転数検出器及び変位検出器からの各信号に基づいて、該原木の回転数を演算させると同時に、
演算結果の回転数で前記原木が回転するように前記最も応答性の遅い駆動源以外の駆動源の回転数を制御する制御器と、
を有することを特徴とするベニヤレース（請求項１）と、
周囲に突刺体を備え、原木の外周に当接され駆動源より回転駆動される突刺回転体と、他の駆動源より回転駆動され原木に当接される少なくとも１個の回転体とにより、
原木を回転させて刃物で単板を旋削するベニヤレースに於いて、
突刺回転体又は少なくとも１個の回転体の前記駆動源の中で最も応答性の遅い駆動源の回転数を検出する回転数検出器と、
原木回転中心より刃物の刃先までの距離を検出する変位検出器と、
前記回転数検出器及び変位検出器からの各信号に基づいて、該原木の外周の任意な位置の速さを演算させると同時に、
前記原木の外周の前記任意な位置の速さが演算結果の速さになるように前記最も応答性の遅い駆動源以外の駆動源の回転数を制御する制御器と、
を有することを特徴とするベニヤレース（請求項２）と、
周囲に突刺体を備え、原木の外周に当接され駆動源より回転駆動される突刺回転体と、他の駆動源より回転駆動され原木に当接される少なくとも１個の回転体とにより、
原木を回転させて刃物で単板を旋削するベニヤレースに於いて、
駆動源の内の少なくとも一つは交流電動機であって、
交流電動機の回転数を検出する回転数検出器と、
原木回転中心より刃物の刃先までの距離を検出する変位検出器と、
前記回転数検出器及び変位検出器からの各信号に基づいて、該原木の回転数を演算させると同時に、
演算結果の回転数で前記原木が回転するように交流電動機以外の駆動源の回転数を制御する制御器と、
を有することを特徴とするベニヤレース（請求項３）と、
周囲に突刺体を備え、原木の外周に当接され駆動源より回転駆動される突刺回転体と、他の駆動源より回転駆動され原木に当接される少なくとも１個の回転体とにより、
原木を回転させて刃物で単板を旋削するベニヤレースに於いて、
駆動源の内の少なくとも一つは交流電動機であって、
交流電動機の回転数を検出する回転数検出器と、
原木回転中心より刃物の刃先までの距離を検出する変位検出器と、
前記回転数検出器及び変位検出器からの各信号に基づいて、該原木の外周の任意な位置の速さを演算させると同時に、
前記原木の外周の前記任意な位置の速さが演算結果の速さになるように交流電動機以外の駆動源の回転数を制御する制御器と、
を有することを特徴とするベニヤレース（請求項４）と、
原木を軸芯方向にチャッキングして回転させる一対のスピンドルと、
一対のスピンドルの少なくとも一方を回転させるスピンドル用モータと、
スピンドルの軸芯と直交する方向の成分を含む方向に移動自在で且つ刃物を有する鉋台と、
一対のスピンドルの軸芯と鉋台に備えた刃物の刃先との間の距離を検出する鉋台位置検出器と、
鉋台を移動させるための鉋台移動機構と、
原木の外周に突刺自在な多数の突刺体を有し且つ軸芯方向の適宜間隔毎に鉋台に配備されている適数個の回転部材と、
回転部材を回転駆動させる交流電動機と、
前記交流電動機の回転数を検出する交流電動機回転数検出器と、
原木と単板との境界付近を押圧する先端部を有し且つ回転部材の間隔に介入する位置に夫々配備されているプレッシャーバと、
交流電動機回転数検出器からの信号と鉋台位置検出器からの各信号と旋削する単板の厚みの情報に基づいて、スピンドルの回転数を演算して該スピンドルの回転数を決定する信号をスピンドル用モータに出すと共に、鉋台の移動速度を演算して該鉋台の移動速度を決定する信号を鉋台用モータに出す制御器と、
が配備されているベニヤレース（請求項）と、
原木を軸芯方向にチャッキングして回転させる一対のスピンドルと、
一対のスピンドルの少なくとも一方を回転させるスピンドル用モータと、
スピンドルの回転数を検出するスピンドル回転数検出器と、
スピンドルの軸芯と直交する方向の成分を含む方向に移動自在で且つ刃物を有する鉋台と、
一対のスピンドルの軸芯と鉋台に備えた刃物の刃先との間の距離を検出する鉋台位置検出器と、
鉋台を移動させるための鉋台移動機構と、
原木の外周に突刺自在な多数の突刺体を有し且つ軸芯方向の適宜間隔毎に鉋台に配備されている適数個の回転部材と、
回転部材を回転駆動させる交流電動機と、
前記交流電動機の回転数を検出する交流電動機回転数検出器と、
原木と単板との境界付近を押圧する先端部を有し且つ回転部材の間隔に介入する位置に夫々配備されているプレッシャーバと、
交流電動機回転数検出器からの信号と鉋台位置検出器からの各信号と旋削する単板の厚みの情報に基づいて、スピンドルの回転数を演算して該スピンドルの回転数を決定する信号をスピンドル用モータに出すと共に、スピンドル回転数検出器からの信号に基づいて鉋台の移動速度を演算して該鉋台の移動速度を決定する信号を鉋台用モータに出す制御器と、
が配備されているベニヤレース（請求項６）と、
を提供する。
【０００８】
【発明の実施の形態】
以下、本発明の実施の形態を図６に基づいて説明する。図６は原木１より単板を旋削するのに要する動力を、後述する一対のスピンドル３と原木１の外周から、とにより供給するベニヤレースの概略の一部断面側面図であり、スピンドル３は軸芯方向に進退自在且つ回転自在に構成されている。
５はスピンドル３を回転駆動させるサーボモータ等によるスピンドル用モータであり、７はスピンドル３の回転数を検出するロータリーエンコーダ等によるスピンドル回転数検出器である。
９は鉋台であり、刃物１１の刃先が原木１の回転中心の水平線より若干下に位置するように配備され、そして水平方向であるところの矢印ＡＢ方向に移動自在に構成されている。
１３は回転自在に鉋台９に配備されている外周駆動ロールであり、円板状の外周に多数の突刺体１５を有する適数個の回転部材１７が駆動軸１９の軸芯方向に適宜間隔毎に具備されている。更に外周駆動ロール１３を回転駆動させる一定回転の交流電動機等による外周駆動モータ２１が鉋台９に配備されている。
２２は該外周駆動モータ２１の回転数を検出するロータリーエンコーダ等による外周駆動モータ回転数検出器である。
２３は、回転部材１７の適宜間隔内に配備されたプレッシャーバであり、その下端は刃物１１より単板が旋削される方向の上手の位置にあり、原木１と単板との境界付近の原木１の表面を押圧している。
２５は、鉋台９を矢印ＡＢで示す水平方向に移動させるためのボールねじ等による鉋台送りねじであり、鉋台９に螺合されている。２７は、鉋台送りねじ２５を回転駆動させるサーボモータ等による鉋台送りねじ用モータであり、２９はスピンドル３の軸芯から鉋台９に配備されている刃物１１の刃先までの距離を検出するロータリーエンコーダ等による鉋台位置検出器である。
【０００９】
３１は制御器であり、各検出器７、２２及び２９からの信号により前述の如く構成されているベニヤレースを後述の如く制御する信号を出す。
尚、制御器３１には、旋削する単板の厚みが予め入力されているし、また前記モータ５、２１、及び２７の各々の作動を如何なる時でも、任意に手動制御できる。
【００１０】
まず手動制御でモータ５及び２１を作動させ、原木１を一対のスピンドル３で狭持して空転させる。
続いて手動制御で、鉋台送りねじ用モータ２７を駆動させ、刃物１１が原木外周近辺へ到達するまで鉋台９を高速で矢印A方向へ移動させる。
移動終了後、自動制御に切り換えることにより制御器は以下のように前記モータ５及び２７作動させる。
即ち、制御器３１は、外周駆動モータ回転数検出器２２からの信号により、外周駆動モータ２１の回転数Ｇ１を判断し、回転部材１７の外周の速さＶ１を随時演算すると共に、鉋台位置検出器２９からの信号により、旋削している原木１の直径を随時演算する。
同時に制御器３１は、前記随時演算した原木１の直径の時の該原木１の外周の速さが、前記回転部材１７の外周の速さＶ１と同一速さＶ１になるスピンドル３の回転数Ｓ１を随時演算すると共に、スピンドル用モータ５に該スピンドル３を前記随時演算した回転数Ｓ１で回転させる信号を出す。その結果、スピンドル３及び回転部材１７から原木１へ回転力が与えられる。
同時に制御器３１は、スピンドル３に設けたスピンドル回転数検出器７から随時得られるスピンドル３の回転数Ｅ１の１回転当たりに前記単板の厚みに相当する距離を演算し、該演算した距離、鉋台９を矢印Ａ方向に移動させる様に、鉋台送りねじ用モータ２７に信号を出す。その結果、刃物１１の刃先をスピンドル３の軸芯に向かって移動させ、原木１から予め入力されている厚みの単板を旋削する。
【００１１】
よってこの様なベニヤレースでは、原木１に存在する通常より柔らかい部分、通常より硬い部分、通常の部分、多数の節の部分により、通常より柔らかい部分は旋削抵抗が軽負荷、通常の部分は旋削抵抗が中負荷、通常より硬い部分又は多数の節の部分は旋削抵抗が重負荷となって、外周駆動モータ２１の回転数が変動して、回転部材１７の外周の速さが例えばＶ２に変動した場合でも、原木１の外周の速さを前記変動したＶ２になるように、制御器３１でスピンドル用モータ５を制御するので、原木１の外周には突刺体１１５の刺さった跡が残る程度であり、該跡を広げて大きなキズにすることはないのである。
【００１２】
尚、前述の実施の形態では、スピンドル回転数検出器７からの信号により、随時判断したスピンドル３の回転数Ｅ１、の１回転当たりに前記単板の厚みに相当する距離だけ、鉋台送りねじ用モータ２７で鉋台９を矢印Ａ方向に移動させているが、演算後の前記回転数Ｓ１の１回転当たりに前記単板の厚みに相当する距離だけ、鉋台送りねじ用モータ２７で鉋台９を矢印Ａ方向に移動させても良い。なぜなら、スピンドル用モータ５が制御器３１の指令に素早く応答していれば、スピンドル回転数検出器７から得られる前記回転数Ｅ１は前記演算後の回転数Ｓ１と同じ値になる。ただしスピンドル３と原木１とがずれない場合に成立する。
【００１３】
尚、前述の実施の形態に於いて一対のスピンドル３の一方にサーボモータ等によるスピンドル用モータを連結して回転駆動させ、そして一対のスピンドル３の他方を従動回転にし、更に回転数を検出するロータリーエンコーダ等によるスピンドル回転数検出器を従動回転側のスピンドルに連結させても良い。従動回転側のスピンドルは原木について周りであるので、原木とずれることは無く、正確な原木の回転数を検出することができる。
【００１４】
図７は第１変更例である。
一対のスピンドル３は共に原木１に従動回転し、且つスピンドル回転数検出器７が連結されている。
４１は原木１の水平方向の撓みを防止し、且つ原木１の外周に当接して回転力を与える水平ロールである。
４３は水平ロール４１を回転駆動させるサーボモータ等による水平ロール用モータであり、４５は水平ロール４３の回転数を検出するロータリーエンコーダ等による水平ロール回転数検出器である。
４７は水平ロール４１を回転自在に支持し、且つ水平方向に移動自在に配備されている水平軸受である。
４９は、水平軸受４７を水平方向に移動させるためのボールねじ等による水平軸受送りねじであり、水平軸受４７に螺合されている。
５１は、水平軸受送りねじ４９を回転駆動させるサーボモータ等による水平軸受送りねじ用モータであり、５３はスピンドル３の軸芯から水平ロール４１の外周までの距離を検出するロータリーエンコーダ等による水平ロール位置検出器である。
鉋台９に関連する構成及び作用は、実施の形態と同じであるので説明は省略する。
制御器３１ａは、外周駆動モータ回転数検出器２２からの信号により、外周駆動モータ２１の回転数Ｇ１を判断し、回転部材１７の外周の速さＶ１を随時演算すると共に、鉋台位置検出器２９からの信号により、旋削している原木１の直径を随時演算する。
同時に制御器３１ａは、前記随時演算した原木１の直径の時の該原木１の外周の速さが、前記回転部材１７の外周の速さＶ１と同一速さＶ１になる水平ロール４１の回転数Ｐ１を随時演算すると共に、水平ロール用モータ４３に水平ロール４１を前記随時演算した回転数Ｐ１で回転させる信号を出す。同時に前記随時演算した原木１の直径に基づいて水平ロール４１の外周が原木１の外周に当接する位置に水平軸受４７が移動するように水平軸受送りねじ用モータ５１に信号を出す。その結果、水平ロール４１及び回転部材１７から原木１へ回転力が与えられる。
【００１５】
図８はスピンドルレスであるところの第２変更例である。
水平ロール４１に関連する構成及び作用は第１変更例と同じであるので説明は省略する。また鉋台９に関連する構成は実施の形態と同じであるので説明は省略する。
６１は原木１の垂直方向の撓みを防止し、且つ原木１の外周に当接して従動回転する垂直ロールである。
６３は垂直ロール６１の回転数を検出するロータリーエンコーダ等による垂直ロール回転数検出器である。
６５は垂直ロール６１を回転自在に支持し、且つ垂直方向に移動自在に配備されている垂直軸受である。
６６は、垂直軸受６５を垂直方向に移動させるためのボールねじ等による垂直軸受送りねじであり、垂直軸受６５に螺合されている。
６７は、垂直軸受送りねじ６６を回転駆動させるサーボモータ等による垂直軸受送りねじ用モータであり、６９は原木１の回転中心から垂直ロール４１の外周までの距離を検出するロータリーエンコーダ等による垂直ロール位置検出器である。
即ち、制御器３１ｂは、外周駆動モータ回転数検出器２２からの信号により、外周駆動モータ２１の回転数Ｇ１を判断し、回転部材１７の外周の速さＶ１を随時演算すると共に、鉋台位置検出器２９からの信号により、旋削している原木１の直径を随時演算する。
同時に制御器３１ｂは、前記随時演算した原木１の直径に基づいて垂直ロール６１の外周が原木１の外周に当接する位置に垂直軸受６５が移動するように垂直軸受送りねじ用モータ６７に信号を出す。
同時に制御器３１ｂは、前記随時演算した原木１の直径と垂直ロール回転数検出器６３からの信号とにより該原木１の回転数を演算すると共に、該回転数の１回転当たりに前記単板の厚みに相当する距離を演算し、該演算した距離、鉋台９を矢印Ａ方向に移動させる様に、鉋台送りねじ用モータ２７に信号を出す。その結果、刃物１１の刃先を原木の回転中心に向かって移動させ、原木１から予め入力されている厚みの単板を旋削する。
【００１６】
尚、実施の形態、第１変更例及び第２変更例では、板状のプレッシャーバ２３が複数配備されているが、図９及び図１０に示す様な構成でも良い。
７１は原木１の軸芯方向に平行に長い丸棒状、且つ回転駆動自在なプレッシャーロールである。７３はプレッシャーロール７１を回転自在に保持する複数のプレッシャーロール受台であり、鉋台９に取り付けられている。
７５は突刺体７７を外周に有する回転部材であり、回転駆動自在である。７９は回転部材７５を回転自在に保持し、且つ回動自在にプレッシャーロール受台７３に取り付けられ、公知の押圧機構により原木１方向に力を受けて回転部材７５が原木１に押圧される。
またプレッシャーロール７１及び回転部材７５は外周駆動モータ２１により回転駆動される。
尚、その他の構成、作用は実施の形態、第１変更例、第２変更例のいずれであっても良い。
【００１７】
尚、第１変更例、第２変更例では外周駆動ロール１３を回転駆動させる外周駆動モータ２１に交流電動機、水平ロール４１を回転駆動させる水平ロール用モータ４３にサーボモータが使用されているが、外周駆動モータ２１にサーボモータ、水平ロール用モータ４３に交流電動機を使用しても良い。
その場合制御器は、鉋台位置検出器２９からの信号により、旋削している原木１の直径を随時演算する。
同時に制御器は、前記随時演算した原木１の直径に基づいて水平ロール４１の外周が原木１の外周に当接する位置に水平軸受４７が移動するように水平軸受送りねじ用モータ５１に信号を出す。
同時に制御器は、水平ロール回転数検出器４５からの信号により、水平ロール用モータ４３の回転数Ｈ１を判断し、水平ロール４１の外周の速さＶ１を随時演算する。
同時に制御器は、前記随時演算した原木１の直径の時の該原木１の外周の速さが、前記水平ロール４１の外周の速さＶ１と同一速さＶ１になる回転部材１７の回転数Ｑ１を随時演算すると共に、外周駆動モータ２１に回転部材１７を前記随時演算した回転数Ｑ１で回転させる信号を出す。
同時に制御器は、原木１の１回転当たりに前記単板の厚みに相当する距離を演算し、該演算した距離、鉋台９を移動させる様に、鉋台送りねじ用モータ２７に信号を出す。
【００１８】
尚、該ベニヤレースに連結されている次行程の搬送ベルト又はリーリング装置等の速さに関しても、外周駆動モータ２１の変動している回転数に基づいて、速さ制御すれば、旋削した単板が前記行程で重なったり、引き裂かれたりすることはほとんど無い。
【００１９】
【発明の効果】
以上説明したように本発明のベニヤレースでは、突刺体を有する回転部材から原木の外周に回転力を与えるときの原木の外周の速さに対して、スピンドルから回転力を与えるときの原木の外周の速さが同一速さになるようにスピンドルの回転数を制御しているので、原木に刺さった突刺体の跡が広げられることはなく、旋削した単板で合板を製造しても前記跡が大きなキズとなって合板の品質を低下させる様なことはほとんどないのである。
【図面の簡単な説明】
【図１】従来装置の一部断面側面図である。
【図２】交流電動機の回転数の説明図である。
【図３】刃物の刃先部分の拡大断面側面図である。
【図４】刃物の刃先部分の拡大断面側面図である。
【図５】刃物の刃先部分の拡大断面側面図である。
【図６】実施の形態の一部断面側面図である。
【図７】第１変更例の一部断面側面図である。
【図８】第２変更例の一部断面側面図である。
【図９】プレッシャーバ２３の変更例である。
【図１０】図９を原木側より原木が無い状態でプレッシャーロール７１を見た一部断面図である。
【符号の説明】
１原木
３スピンドル
５スピンドル用モータ
１５突刺体
１７回転部材
２１外周駆動モータ
２２外周駆動モータ回転数検出器
３１制御器[0001]
[Technical field to which the invention belongs]
The present invention relates to a veneer lace that supplies power required for turning to a log from a plurality of driving sources when a single plate is turned from the log.
[0002]
[Prior art]
FIG. 1 shows a veneer race that supplies power required to turn a single plate from a raw wood 101 by at least one of a pair of spindles 103 and from the outer periphery of the raw wood 101. The spindle 103 is capable of moving forward and backward in the axial direction and rotating. It is configured freely. Reference numeral 105 denotes a spindle motor such as a servo motor that rotationally drives the spindle 103, and 107 denotes a spindle rotation speed detector such as a rotary encoder that detects the rotation speed of the spindle 103.
Reference numeral 109 denotes a table, which is arranged so that the cutting edge of the blade 111 is located slightly below the horizontal line of the rotation center of the log 101.
Reference numeral 113 denotes an outer peripheral drive roll that is rotatably disposed on the base 109, and an appropriate number of rotating members 117 having a large number of piercing bodies 115 on a disc-shaped outer periphery are arranged at appropriate intervals in the axial direction of the drive shaft 119. It is equipped with. Further, a peripheral drive motor 121 such as a constant-rotation AC motor that rotates the peripheral drive roll 113 is provided on the base 109.
Reference numeral 123 denotes a pressure bar arranged within an appropriate interval of the rotating member 117, the lower end of which is located at an upper position in the direction in which the veneer is turned from the cutter 111, and the log near the boundary between the log 101 and the veneer The surface of 101 is pressed.
Reference numeral 125 denotes a table feed screw such as a ball screw for moving the table 109 in the horizontal direction indicated by an arrow, and is screwed to the table 109. Reference numeral 127 denotes a table feed screw motor using a servo motor or the like that rotationally drives the table feed screw 125. Reference numeral 129 denotes the distance between the axis of the pair of spindles 103 and the cutting edge of the blade 111 provided on the table 109. It is a stand position detector using a rotary encoder or the like for detection.
[0003]
Reference numeral 131 denotes a controller which controls the veneer race constructed as described above.
First, the thickness of the single plate to be turned is input to the controller 131, and the rotation speed of the outer peripheral drive motor 121 when turning a normal log is determined as the normal rotation speed. The speed of the outer periphery of the rotating member 117 is determined and inputted as a constant speed V1.
Next, the controller calculates the diameter of the log 101 from time to time with a signal from the stand position detector 129, and
The rotation speed of the spindle 103 at which the speed of the outer periphery of the log 101 when the diameter of the log 101 is calculated is the same as the constant speed V1, is calculated as needed. The spindle 103 is rotated at the number of rotations calculated as needed, and a rotational force is applied to the log 101 from the spindle 103 and the rotating member 117.
At the same time, the table 109 is moved in the direction of the arrow by the table feed screw motor 127 by a distance corresponding to the thickness of the single plate per rotation of the number of rotations of the spindle 103 determined at any time based on a signal from the spindle rotation number detector 107. By moving, the cutting edge of the blade 111 is moved toward the axis of the spindle 103, and a single plate having a thickness set from the raw wood 101 is turned.
[0004]
Further, since the single plate is turned from the raw wood 101 at a substantially constant speed, the outer peripheral drive motor 121 for rotationally driving the outer peripheral drive roll 113 has a simple structure, is robust, is inexpensive, and is easy to maintain. A constant rotation AC motor that is widely used is used.
Further, when the veneer is turned from the raw wood 101, the diameter of the raw wood 101 is sequentially reduced. Therefore, according to the controller 131, the rotation speed of the spindle 103 must be increased in synchronization with the reduction of the diameter. As the spindle motor 105, a servo motor is used that is devised so that it can move as quickly as possible, faithfully to a given command, as well as power.
Further, since the rotation speed of the spindle 103 that changes from time to time is quickly synchronized, the base 109 must be moved toward the axis of the spindle 103 by a distance corresponding to the thickness of the single plate to be turned. As the table feed screw motor 127, a servo motor is used which is devised so that it can move as fast as possible while faithful to a given command, in addition to power.
In the conventional apparatus, as described above, the rotation speed of the outer peripheral drive motor 121 when turning a normal log is determined as the normal rotation speed, and the outer peripheral speed of the rotating member 117 at the normal rotation speed is constant. The speed V1 is determined, and the rotation speed of the spindle 103 is controlled by the controller 131 so that the outer peripheral speed of the log 101 becomes the same as the constant speed V1.
[0005]
[Problems to be solved by the invention]
Recently, however, the quality of raw wood has deteriorated, and the same raw wood 101 contains a softer portion than usual, a harder portion than usual, a normal portion, and a number of nodes.
The softer part than usual has a light turning resistance, the normal part has a medium turning resistance, and the part harder than usual or a number of nodes has a heavy turning resistance.
As a result, as shown in FIG. 2, the rotational speed of the outer peripheral drive motor 121 varies depending on the degree of load. For example, if the rated rotational speed is approximately 1800 RPM at no load or light load, the rotational speed at medium load decreases to approximately 1750 RPM, and the rotational speed at heavy load decreases to approximately 1700 RPM.
[0006]
In the conventional apparatus, the spindle motor 105 is controlled so that the speed of the outer periphery of the log 101 when turning a single plate is constantly at a constant speed V1 by the controller 131. As shown in FIG. 3, which is an enlarged view of the cutting edge portion 111, when turning a normal portion of the raw wood 101, the speed of the outer periphery of the rotating member 117 is a constant speed V 1. This is the same as the outer peripheral speed V 1, so that the pierced body 115 remains on the log 101.
However, as shown in FIG. 4, when turning the harder part than usual and starting turning the normal part, the outer peripheral drive motor 121 rises slower than the spindle motor 105, so the outer peripheral speed of the rotating member 117 is increased. V3 becomes slower than the speed V1 of the outer periphery of the raw wood 101, and the trace of the piercing body 115 is spread on the raw wood 101, and a large scratch K remains.
Further, as shown in FIG. 5, when turning a softer portion of the raw wood 101 than usual, the speed of the outer periphery of the rotating member 117 is a speed V4 that is faster than a constant speed V1, and therefore the outer periphery of the raw wood 101 This speed is faster than the speed V1, and the pierced body 115 is spread on the log 101, leaving a large scratch K.
When a plywood is manufactured with a single plate in which the large scratches K remain, there arises a problem that the quality of the plywood is deteriorated due to the large scratches.
[0007]
[Means for Solving the Problems]
The present invention includes a piercing rotator that is provided with a piercing body at the periphery, is abutted on the outer periphery of the raw wood and is rotationally driven by a driving source, and at least one rotator that is rotationally driven by another driving source and is abutted on the raw wood And by
In the veneer lace that turns a single board with a blade by rotating a log,
A rotational speed detector for detecting the rotational speed of the drive source having the slowest response among the drive sources of the stab rotational body or at least one rotational body;
A displacement detector that detects the distance from the log rotation center to the cutting edge of the blade,
Based on each signal from the rotation speed detector and displacement detector, the rotation speed of the log is calculated,
A controller for controlling the rotational speed of a drive source other than the drive source having the slowest response so that the log rotates at the rotational speed of the calculation result;
Veneer lace (claim 1) characterized by comprising:
A piercing rotator which is provided with a piercing body around, is rotated by a driving source and is rotated by a driving source, and at least one rotating body which is rotated by another driving source and is brought into contact with the raw wood,
In the veneer lace that turns a single board with a blade by rotating a log,
A rotational speed detector for detecting the rotational speed of the drive source having the slowest response among the drive sources of the stab rotational body or at least one rotational body;
A displacement detector that detects the distance from the log rotation center to the cutting edge of the blade,
Based on the signals from the rotation speed detector and the displacement detector, the speed of an arbitrary position on the outer periphery of the log is calculated,
A controller for controlling the rotational speed of a drive source other than the slowest responsive drive source so that the speed of the arbitrary position on the outer periphery of the log is the speed of the calculation result;
Veneer lace (claim 2) characterized by comprising:
A piercing rotator which is provided with a piercing body around, is rotated by a driving source and is rotated by a driving source, and at least one rotating body which is rotated by another driving source and is brought into contact with the raw wood,
In the veneer lace that turns a single board with a blade by rotating a log,
At least one of the drive sources is an AC motor,
A rotational speed detector for detecting the rotational speed of the AC motor;
A displacement detector that detects the distance from the log rotation center to the cutting edge of the blade,
Based on each signal from the rotation speed detector and displacement detector, the rotation speed of the log is calculated,
A controller that controls the rotational speed of a drive source other than the AC motor so that the log rotates at the rotational speed of the calculation result;
A veneer lace (claim 3) characterized by comprising:
A piercing rotator which is provided with a piercing body around, is rotated by a driving source and is rotated by a driving source, and at least one rotating body which is rotated by another driving source and is brought into contact with the raw wood,
In the veneer lace that turns a single board with a blade by rotating a log,
At least one of the drive sources is an AC motor,
A rotational speed detector for detecting the rotational speed of the AC motor;
A displacement detector that detects the distance from the log rotation center to the cutting edge of the blade,
Based on the signals from the rotation speed detector and the displacement detector, the speed of an arbitrary position on the outer periphery of the log is calculated,
A controller that controls the rotational speed of the drive source other than the AC motor so that the speed of the arbitrary position on the outer periphery of the raw wood is the speed of the calculation result;
A veneer lace characterized by comprising:
A pair of spindles that chuck and rotate the log in the axial direction,
A spindle motor for rotating at least one of the pair of spindles;
A saddle that is movable in a direction including a component in a direction perpendicular to the spindle axis and has a blade;
A stand position detector for detecting the distance between the axis of the pair of spindles and the cutting edge of the blade provided in the stand;
A platform moving mechanism for moving the platform,
An appropriate number of rotating members that have a large number of piercing bodies that can be pierced on the outer periphery of the raw wood and are arranged on the gantry at appropriate intervals in the axial direction,
An AC motor for rotating the rotating member;
An AC motor speed detector for detecting the speed of the AC motor;
A pressure bar that has a tip portion that presses the vicinity of the boundary between the log and the veneer and is disposed at a position that intervenes in the interval of the rotating member;
Based on the signal from the AC motor rotation speed detector, each signal from the platform position detector, and information on the thickness of the single plate to be turned, a signal for determining the rotation speed of the spindle is calculated by calculating the rotation speed of the spindle. A controller for calculating a moving speed of the table and determining a moving speed of the table to the table motor;
A veneer race where the
A pair of spindles that chuck and rotate the log in the axial direction,
A spindle motor for rotating at least one of the pair of spindles;
A spindle speed detector for detecting the speed of the spindle;
A saddle that is movable in a direction including a component in a direction perpendicular to the spindle axis and has a blade;
A stand position detector for detecting the distance between the axis of the pair of spindles and the cutting edge of the blade provided in the stand;
A platform moving mechanism for moving the platform,
An appropriate number of rotating members that have a large number of piercing bodies that can be pierced on the outer periphery of the raw wood and are arranged on the gantry at appropriate intervals in the axial direction,
An AC motor for rotating the rotating member;
An AC motor speed detector for detecting the speed of the AC motor;
A pressure bar that has a tip portion that presses the vicinity of the boundary between the log and the veneer and is disposed at a position that intervenes in the interval of the rotating member;
Based on the signal from the AC motor rotation speed detector, each signal from the platform position detector, and information on the thickness of the single plate to be turned, a signal for determining the rotation speed of the spindle is calculated by calculating the rotation speed of the spindle. A controller for calculating a moving speed of the table based on a signal from the spindle rotation number detector and outputting a signal for determining the moving speed of the table to the table motor;
A veneer race (claim 6),
I will provide a.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIG. FIG. 6 is a schematic partial cross-sectional side view of a veneer lace for supplying the power required to turn a single plate from the raw wood 1 by a pair of spindles 3 and an outer periphery of the raw wood 1 to be described later. It is configured to be movable back and forth in the axial direction and rotatable.
Reference numeral 5 denotes a spindle motor such as a servo motor that rotationally drives the spindle 3. Reference numeral 7 denotes a spindle rotation speed detector such as a rotary encoder that detects the rotation speed of the spindle 3.
Reference numeral 9 denotes a table, which is arranged so that the cutting edge of the blade 11 is located slightly below the horizontal line of the rotation center of the log 1 and is configured to be movable in the arrow AB direction which is the horizontal direction.
Reference numeral 13 denotes an outer peripheral drive roll that is rotatably disposed on the base 9, and an appropriate number of rotating members 17 having a large number of piercing bodies 15 on a disc-shaped outer periphery are arranged at appropriate intervals in the axial direction of the drive shaft 19. It is equipped with. Further, an outer peripheral drive motor 21 such as a constant-rotation AC motor that rotates the outer peripheral drive roll 13 is provided on the rack 9.
Reference numeral 22 denotes an outer peripheral drive motor rotational speed detector such as a rotary encoder that detects the rotational speed of the outer peripheral drive motor 21.
Reference numeral 23 denotes a pressure bar arranged within an appropriate interval of the rotating member 17, and the lower end thereof is located at an upper position in the direction in which the veneer is turned from the cutter 11, and the log near the boundary between the log 1 and the veneer 1 surface is pressed.
Reference numeral 25 denotes a table feed screw such as a ball screw for moving the table 9 in the horizontal direction indicated by the arrow AB, and is screwed into the table 9. 27 is a motor for a table feed screw by a servo motor or the like for rotating the table feed screw 25, and 29 is a rotary encoder for detecting the distance from the axis of the spindle 3 to the cutting edge of the blade 11 provided on the table 9 It is a stand position detector by the above.
[0009]
Reference numeral 31 denotes a controller which outputs a signal for controlling the veneer race constructed as described above by signals from the detectors 7, 22 and 29 as described later.
Note that the thickness of the single plate to be turned is input to the controller 31 in advance, and the operation of each of the motors 5, 21, and 27 can be arbitrarily manually controlled at any time.
[0010]
First, the motors 5 and 21 are operated by manual control, and the log 1 is held between the pair of spindles 3 to idle.
Subsequently, the table feed screw motor 27 is driven by manual control, and the table 9 is moved in the arrow A direction at high speed until the cutter 11 reaches the vicinity of the outer periphery of the log.
After the movement is completed, the controller operates the motors 5 and 27 as follows by switching to automatic control.
That is, the controller 31 determines the rotational speed G1 of the outer peripheral driving motor 21 from the signal from the outer peripheral driving motor rotational speed detector 22, calculates the outer peripheral speed V1 of the rotating member 17 as needed, and detects the position of the base. Based on the signal from the tool 29, the diameter of the raw log 1 being turned is calculated as needed.
At the same time, the controller 31 rotates the rotational speed S1 of the spindle 3 so that the speed of the outer periphery of the log 1 when the diameter of the log 1 is calculated as needed is the same speed V1 as the speed V1 of the outer periphery of the rotating member 17. And a signal for rotating the spindle 3 at the rotation speed S1 calculated as needed. As a result, a rotational force is applied to the log 1 from the spindle 3 and the rotating member 17.
At the same time, the controller 31 calculates a distance corresponding to the thickness of the single plate per one rotation of the rotation speed E1 of the spindle 3 obtained as needed from the spindle rotation speed detector 7 provided on the spindle 3, and the calculated distance, A signal is output to the table feed screw motor 27 so as to move the table 9 in the direction of arrow A. As a result, the cutting edge of the blade 11 is moved toward the axis of the spindle 3, and a single plate having a thickness inputted in advance from the log 1 is turned.
[0011]
Therefore, in such a veneer lace, the softer part, the harder part than usual, the normal part, and the parts of many nodes existing in the log 1, the softer part is lighter in turning resistance, and the normal part is turned. The resistance is medium load, the part harder than usual or the part of many nodes becomes heavy load of turning resistance, the rotation speed of the outer peripheral drive motor 21 varies, and the outer peripheral speed of the rotating member 17 varies, for example, to V2. Even in such a case, since the spindle motor 5 is controlled by the controller 31 so that the speed of the outer periphery of the log 1 becomes the above-mentioned changed V2, the trace of the piercing body 115 remains on the outer periphery of the log 1 And it doesn't spread the mark and make a big scratch.
[0012]
In the above-described embodiment, a distance corresponding to the thickness of the single plate per one rotation of the rotational speed E1 of the spindle 3 determined at any time based on a signal from the spindle rotational speed detector 7 is used for the table feed screw. The motor 27 is moved in the direction of arrow A by the motor 27, but the table 9 is moved to the arrow by the table feed screw motor 27 by a distance corresponding to the thickness of the single plate per one rotation of the rotation speed S1 after the calculation. It may be moved in the A direction. This is because if the spindle motor 5 quickly responds to the command from the controller 31, the rotation speed E1 obtained from the spindle rotation speed detector 7 becomes the same value as the rotation speed S1 after the calculation. However, it is established when the spindle 3 and the log 1 do not shift.
[0013]
In the above-described embodiment, a spindle motor such as a servo motor is connected to one of the pair of spindles 3 for rotation, and the other of the pair of spindles 3 is driven to rotate to detect the number of rotations. A spindle rotation number detector such as a rotary encoder may be connected to the driven rotation side spindle. Since the spindle on the driven rotation side is around the log, it does not deviate from the log and an accurate rotation number of the log can be detected.
[0014]
FIG. 7 shows a first modification.
The pair of spindles 3 are both driven by the log 1 and are connected to a spindle rotation number detector 7.
Reference numeral 41 denotes a horizontal roll that prevents the raw wood 1 from being bent in the horizontal direction and applies a rotational force by contacting the outer periphery of the raw wood 1.
Reference numeral 43 denotes a horizontal roll motor such as a servo motor that rotationally drives the horizontal roll 41. Reference numeral 45 denotes a horizontal roll rotational speed detector such as a rotary encoder that detects the rotational speed of the horizontal roll 43.
Reference numeral 47 denotes a horizontal bearing that rotatably supports the horizontal roll 41 and is arranged to be movable in the horizontal direction.
Reference numeral 49 denotes a horizontal bearing feed screw such as a ball screw for moving the horizontal bearing 47 in the horizontal direction, and is screwed into the horizontal bearing 47.
Reference numeral 51 denotes a horizontal bearing feed screw motor such as a servo motor that rotationally drives the horizontal bearing feed screw 49. Reference numeral 53 denotes a horizontal roll using a rotary encoder or the like that detects the distance from the axis of the spindle 3 to the outer periphery of the horizontal roll 41. It is a position detector.
Since the configuration and operation related to the rack 9 are the same as those in the embodiment, the description thereof is omitted.
The controller 31a determines the rotational speed G1 of the outer peripheral drive motor 21 based on the signal from the outer peripheral drive motor rotational speed detector 22, calculates the outer peripheral speed V1 of the rotating member 17 as needed, and the stand position detector 29 From the signal from, the diameter of the log 1 that is being turned is calculated as needed.
At the same time, the controller 31a rotates the horizontal roll 41 so that the speed of the outer circumference of the log 1 when the diameter of the log 1 is calculated as needed is the same speed V1 as the speed V1 of the outer circumference of the rotating member 17. While calculating P1 at any time, it outputs a signal to the horizontal roll motor 43 to rotate the horizontal roll 41 at the rotation speed P1 calculated at any time. At the same time, a signal is output to the horizontal bearing feed screw motor 51 so that the horizontal bearing 47 moves to a position where the outer periphery of the horizontal roll 41 contacts the outer periphery of the raw wood 1 based on the diameter of the raw wood 1 calculated as needed. As a result, a rotational force is applied to the log 1 from the horizontal roll 41 and the rotating member 17.
[0015]
FIG. 8 shows a second modification in which the spindle is not used.
Since the configuration and operation related to the horizontal roll 41 are the same as those in the first modified example, description thereof will be omitted. Moreover, since the structure relevant to the stand 9 is the same as that of embodiment, description is abbreviate | omitted.
Reference numeral 61 denotes a vertical roll which prevents the raw wood 1 from being bent in the vertical direction and rotates in contact with the outer periphery of the raw wood 1.
Reference numeral 63 denotes a vertical roll rotation number detector such as a rotary encoder that detects the rotation number of the vertical roll 61.
Reference numeral 65 denotes a vertical bearing that rotatably supports the vertical roll 61 and is arranged to be movable in the vertical direction.
Reference numeral 66 denotes a vertical bearing feed screw such as a ball screw for moving the vertical bearing 65 in the vertical direction, and is screwed into the vertical bearing 65.
67 is a vertical bearing feed screw motor such as a servo motor that rotationally drives the vertical bearing feed screw 66, and 69 is a vertical roll using a rotary encoder or the like that detects the distance from the rotation center of the log 1 to the outer periphery of the vertical roll 41. It is a position detector.
That is, the controller 31b determines the rotational speed G1 of the outer peripheral driving motor 21 from the signal from the outer peripheral driving motor rotational speed detector 22, calculates the outer peripheral speed V1 of the rotating member 17 as needed, and detects the position of the base. Based on the signal from the tool 29, the diameter of the raw log 1 being turned is calculated as needed.
At the same time, the controller 31b sends a signal to the vertical bearing feed screw motor 67 so that the vertical bearing 65 moves to a position where the outer periphery of the vertical roll 61 contacts the outer periphery of the raw wood 1 based on the diameter of the raw wood 1 calculated as needed. put out.
At the same time, the controller 31b calculates the rotation speed of the log 1 based on the diameter of the log 1 calculated from time to time and the signal from the vertical roll rotation speed detector 63, and the rotation of the veneer per rotation of the rotation speed. A distance corresponding to the thickness is calculated, and a signal is output to the table feed screw motor 27 so that the calculated distance, the table 9 is moved in the arrow A direction. As a result, the cutting edge of the blade 11 is moved toward the rotation center of the raw wood, and a single plate having a thickness inputted in advance from the raw wood 1 is turned.
[0016]
In the embodiment, the first modified example, and the second modified example, a plurality of plate-like pressure bars 23 are provided. However, the configuration shown in FIGS. 9 and 10 may be used.
Reference numeral 71 denotes a long round bar-like pressure roll that is parallel to the axial direction of the log 1 and that can be driven to rotate. Reference numeral 73 denotes a plurality of pressure roll holders that rotatably hold the pressure roll 71, and are attached to the base 9.
Reference numeral 75 denotes a rotating member having a piercing body 77 on the outer periphery, and is rotatable. Reference numeral 79 denotes a rotary member 75 that is rotatably held and is rotatably attached to a pressure roll receiving base 73. The rotary member 75 is pressed against the raw wood 1 by receiving a force in the direction of the raw wood 1 by a known pressing mechanism.
The pressure roll 71 and the rotating member 75 are rotationally driven by the outer peripheral drive motor 21.
Other configurations and operations may be any of the embodiment, the first modified example, and the second modified example.
[0017]
In the first modified example and the second modified example, an AC motor is used for the outer peripheral drive motor 21 that rotationally drives the outer peripheral drive roll 13, and a servo motor is used for the horizontal roll motor 43 that rotationally drives the horizontal roll 41. A servo motor may be used for the outer peripheral drive motor 21 and an AC motor may be used for the horizontal roll motor 43.
In that case, the controller calculates the diameter of the log 1 that is being turned as needed from the signal from the stand position detector 29.
At the same time, the controller outputs a signal to the horizontal bearing feed screw motor 51 so that the horizontal bearing 47 moves to a position where the outer periphery of the horizontal roll 41 contacts the outer periphery of the raw wood 1 based on the diameter of the raw wood 1 calculated as needed. .
At the same time, the controller determines the rotational speed H1 of the horizontal roll motor 43 from the signal from the horizontal roll rotational speed detector 45, and calculates the outer peripheral speed V1 of the horizontal roll 41 as needed.
At the same time, the controller sets the rotation speed Q1 of the rotating member 17 so that the speed of the outer circumference of the log 1 when the diameter of the log 1 is calculated as needed is the same speed V1 as the speed V1 of the outer circumference of the horizontal roll 41. Is calculated at any time, and a signal for rotating the rotating member 17 at the rotation number Q1 calculated at any time is output to the outer peripheral drive motor 21.
At the same time, the controller calculates a distance corresponding to the thickness of the veneer per rotation of the log 1 and outputs a signal to the table feed screw motor 27 so as to move the calculated table by the calculated distance.
[0018]
The speed of the conveyor belt or reeling device in the next stroke connected to the veneer race is also controlled by controlling the speed based on the changing rotational speed of the outer peripheral drive motor 21. The plates rarely overlap or are torn in the process.
[0019]
【The invention's effect】
As described above, in the veneer race of the present invention, the outer periphery of the raw wood when the rotational force is applied from the spindle to the speed of the outer periphery of the raw wood when the rotational force is applied to the outer periphery of the raw wood from the rotating member having the piercing body The number of rotations of the spindle is controlled so that the speeds of the stabs are the same, so the traces of the pierced body stuck in the log will not be widened. There is almost nothing that reduces the quality of plywood as a large scratch.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional side view of a conventional apparatus.
FIG. 2 is an explanatory diagram of the rotational speed of an AC motor.
FIG. 3 is an enlarged cross-sectional side view of a cutting edge portion of a cutter.
FIG. 4 is an enlarged cross-sectional side view of a cutting edge portion of a cutter.
FIG. 5 is an enlarged cross-sectional side view of a cutting edge portion of a cutter.
FIG. 6 is a partial cross-sectional side view of the embodiment.
FIG. 7 is a partial sectional side view of a first modified example.
FIG. 8 is a partial cross-sectional side view of a second modified example.
FIG. 9 is a modified example of the pressure bar 23;
10 is a partial cross-sectional view of the pressure roll 71 in FIG. 9 in a state where there is no log from the log side.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Log 3 Spindle 5 Spindle motor 15 Piercing body 17 Rotating member 21 Peripheral drive motor 22 Peripheral drive motor rotational speed detector 31 Controller

Claims

A piercing rotator which is provided with a piercing body around, is rotated by a driving source and is rotated by a driving source, and at least one rotating body which is rotated by another driving source and is brought into contact with the raw wood,
In the veneer lace that turns a single board with a blade by rotating a log,
A rotational speed detector for detecting the rotational speed of the drive source having the slowest response among the drive sources of the stab rotational body or at least one rotational body;
A displacement detector that detects the distance from the log rotation center to the cutting edge of the blade,
Based on each signal from the rotation speed detector and displacement detector, the rotation speed of the log is calculated,
A controller for controlling the rotational speed of a drive source other than the drive source having the slowest response so that the log rotates at the rotational speed of the calculation result;
A veneer lace characterized by comprising:

A piercing rotator which is provided with a piercing body around, is rotated by a driving source and is rotated by a driving source, and at least one rotating body which is rotated by another driving source and is brought into contact with the raw wood,
In the veneer lace that turns a single board with a blade by rotating a log,
A rotational speed detector for detecting the rotational speed of the drive source having the slowest response among the drive sources of the stab rotational body or at least one rotational body;
A displacement detector that detects the distance from the log rotation center to the cutting edge of the blade,
Based on the signals from the rotation speed detector and the displacement detector, the speed of an arbitrary position on the outer periphery of the log is calculated,
A controller for controlling the rotational speed of a drive source other than the slowest responsive drive source so that the speed of the arbitrary position on the outer periphery of the log is the speed of the calculation result;
A veneer lace characterized by comprising:

A piercing rotator which is provided with a piercing body around, is rotated by a driving source and is rotated by a driving source, and at least one rotating body which is rotated by another driving source and is brought into contact with the raw wood,
In the veneer lace that turns a single board with a blade by rotating a log,
At least one of the drive sources is an AC motor,
A rotational speed detector for detecting the rotational speed of the AC motor;
A displacement detector that detects the distance from the log rotation center to the cutting edge of the blade,
Based on each signal from the rotation speed detector and displacement detector, the rotation speed of the log is calculated,
A controller that controls the rotational speed of a drive source other than the AC motor so that the log rotates at the rotational speed of the calculation result;
A veneer lace characterized by comprising:

A piercing rotator which is provided with a piercing body around, is rotated by a driving source and is rotated by a driving source, and at least one rotating body which is rotated by another driving source and is brought into contact with the raw wood,
In the veneer lace that turns a single board with a blade by rotating a log,
At least one of the drive sources is an AC motor,
A rotational speed detector for detecting the rotational speed of the AC motor;
A displacement detector that detects the distance from the log rotation center to the cutting edge of the blade,
Based on the signals from the rotation speed detector and the displacement detector, the speed of an arbitrary position on the outer periphery of the log is calculated,
A controller that controls the rotational speed of the drive source other than the AC motor so that the speed of the arbitrary position on the outer periphery of the raw wood is the speed of the calculation result;
A veneer lace characterized by comprising:

A pair of spindles that chuck and rotate the log in the axial direction,
A spindle motor for rotating at least one of the pair of spindles;
A saddle that is movable in a direction including a component in a direction perpendicular to the spindle axis and has a blade;
A stand position detector for detecting the distance between the axis of the pair of spindles and the cutting edge of the blade provided in the stand;
A platform moving mechanism for moving the platform,
An appropriate number of rotating members that have a large number of piercing bodies that can be pierced on the outer periphery of the raw wood and are arranged on the gantry at appropriate intervals in the axial direction,
An AC motor for rotating the rotating member;
An AC motor speed detector for detecting the speed of the AC motor;
A pressure bar that has a tip portion that presses the vicinity of the boundary between the log and the veneer and is disposed at a position that intervenes in the interval of the rotating member;
Based on the signal from the AC motor rotation speed detector, each signal from the platform position detector, and information on the thickness of the single plate to be turned, a signal for determining the rotation speed of the spindle is calculated by calculating the rotation speed of the spindle. A controller for calculating a moving speed of the table and determining a moving speed of the table to the table motor;
Is a veneer race.

A pair of spindles that chuck and rotate the log in the axial direction,
A spindle motor for rotating at least one of the pair of spindles;
A spindle speed detector for detecting the speed of the spindle;
A saddle that is movable in a direction including a component in a direction perpendicular to the spindle axis and has a blade;
A stand position detector for detecting the distance between the axis of the pair of spindles and the cutting edge of the blade provided in the stand;
A platform moving mechanism for moving the platform,
An appropriate number of rotating members that have a large number of piercing bodies that can be pierced on the outer periphery of the raw wood and are arranged on the gantry at appropriate intervals in the axial direction,
An AC motor for rotating the rotating member;
An AC motor speed detector for detecting the speed of the AC motor;
A pressure bar that has a tip portion that presses the vicinity of the boundary between the log and the veneer and is disposed at a position that intervenes in the interval of the rotating member;
Based on the signal from the AC motor rotation speed detector, each signal from the platform position detector, and information on the thickness of the single plate to be turned, a signal for determining the rotation speed of the spindle is calculated by calculating the rotation speed of the spindle. A controller for calculating a moving speed of the table based on a signal from the spindle rotation number detector and outputting a signal for determining the moving speed of the table to the table motor;
Is a veneer race.