JPS6124163B2 - - Google Patents

Description

【発明の詳細な説明】 本発明はベニヤレースに関するものであり、更
に詳細には切削に要する動力の少なくとも一部
を、切削用刃物の刃先に近いプレツシヤーバー側
の位置に備えた駆動ロールを介して、切削直前の
原木外周部へ有効に供給し得るよう改良したベニ
ヤレースに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a veneer lace, and more specifically, at least part of the power required for cutting is transmitted via a drive roll provided on the pressure bar side near the cutting edge of a cutting tool. This invention relates to a veneer lace that has been improved so that it can be effectively supplied to the outer periphery of logs just before cutting.

従来のベニヤレースは、刃物と固定バーで切削
部が構成され、一部では固定バーがロールバーに
置き換えられるが、いずれにせよ、動力は専ら原
木を保持するスピンドルを介して切削部へ伝達さ
れており、斯様な従来のベニヤレースに於ける問
題点を指摘すれば次の通りである。 In conventional veneer lace, the cutting part consists of a cutter and a fixed bar, and in some cases the fixed bar is replaced with a roll bar, but in any case, the power is exclusively transmitted to the cutting part via the spindle that holds the raw wood. The problems with such conventional veneer lace are as follows.

第１に指摘すべきは、硬い原木、中心部の軟ら
かい原木及び割れを含む原木の切削に不適当であ
り、チヤツク部が損壊して動力供給が不能化した
り、原木が破壊して切削が不能化したりする点で
ある。これは高い切削抵抗と、それに対する動力
供給が原木両端中心部から切削部までの長い距離
の原木内部を媒体として行われている為であり、
材料歩留りを著しく低下させている。第２は刃詰
まりによるトラブル発生であり、割れ又は腐れを
含む原木に多く発生し、装置の嫁動率及び材料歩
留りを低下させている。 The first thing to point out is that it is unsuitable for cutting hard logs, soft logs in the center, and logs with cracks, which may damage the chuck and make power supply impossible, or destroy the log and make cutting impossible. This is a point where it becomes This is due to the high cutting resistance and the fact that the power is supplied to it through the inside of the log over a long distance from the center of both ends of the log to the cutting part.
Material yield is significantly reduced. The second problem is the occurrence of troubles due to blade clogging, which often occurs with logs that are cracked or rotten, reducing the conversion rate of the device and the material yield.

斯様な問題点は確かに原木の品質を関連し、従
つて従来のベニヤレースで切削することの困難な
原木等を除外する為に合板適用材と不適材という
名称で選別的に入荷されてきた。ところが原木事
情は大きく変化し、かなり低質の原木の混入をも
容認せざるを得ない状況になりつつある。原木を
適用材と不適材に容易に選別できる時代に於ける
ベニヤレースは、殊ど完成し切つた装置の印象で
あつた。現在でもなお不適材が多少混入していよ
うとも、経験的な逸速い判断によつて不適材は製
材等の他用途へ向けられる為に、ベニヤレースと
しての問題点はあまり存在しない印象すらある。
しかしながら、客観的実情は莫大な損失であり、
前記の問題点は従来のベニヤレースが根本的に有
する重大な欠点として指摘せざるを得ない。 Such problems are certainly related to the quality of raw wood, and therefore, in order to exclude raw wood that is difficult to cut with conventional veneer laces, raw materials are selectively received under the names of materials suitable for plywood and materials unsuitable for plywood. Ta. However, the raw wood situation has changed dramatically, and we are now forced to accept the inclusion of considerably low-quality raw wood. In an era when logs could be easily sorted into suitable and unsuitable wood, veneer lace gave the impression of a particularly perfected device. Even today, even if some unsuitable materials are mixed in, the unsuitable materials are used for other uses such as lumber, based on quick empirical judgment, so it seems that there are not many problems with veneer lace.
However, the objective reality is that it is a huge loss,
The above problem cannot but be pointed out as a fundamental and serious drawback of conventional veneer lace.

また敢えて言及すれば、一部にはロールバーに
動力を供給して回転させる試みも成されている
が、実用化されているものは、プレツシヤーバー
としての目的を達成すべく、原木の全長以上の長
さを有する一本状で直径が著しく細い為に、ころ
がり軸受による支持は不可能で、すべり軸受によ
る支持が避けられず、その直径に対応して供給し
得る動力の殆どが、すべり軸受との摩擦抵抗によ
つて消費される結果、該ロールバーが原木切削の
抵抗とはならないまでも、原木に動力を供給する
用は殆ど成してしないのが実状であり、而も原木
をラジアル方向に押圧する押圧力が過大に増大し
て該原木を破壊する傾向もあつて、その実用的価
値は極めて低い。 I would also like to mention that some attempts have been made to supply power to the roll bar and rotate it, but the ones that have been put into practical use are designed to exceed the full length of the raw wood in order to achieve the purpose of a pressure bar. Because it is a long, single piece with an extremely narrow diameter, it is impossible to support it with rolling bearings, and support with sliding bearings is unavoidable, and most of the power that can be supplied according to the diameter As a result of the frictional resistance of the roll bar, the actual situation is that although the roll bar does not provide any resistance to cutting the log, it does little to supply power to the log. There is also a tendency for the pressing force applied to the log to increase excessively and destroy the log, and its practical value is extremely low.

第３に指摘すべきは、切削されるベニヤ単板の
殆ど総てがカールした状態で吐出される点であつ
て、ベニヤレース以降に於けるベニヤ単板の処理
工程の合理化を著しく阻害する最大の要因となつ
ている。 Thirdly, it should be pointed out that almost all of the cut veneer veneers are delivered in a curled state, which is a major obstacle to streamlining the veneer veneer processing process after veneer lace. This is a contributing factor.

本発明は、従来の諸問題を解決し、従来のベニ
ヤレースで切削が困難であつた硬い原木、中心部
の軟らかい原木及び割れを含む原木等の円滑な切
削を可能化すること、及びカールを低減したベニ
ヤ単板を切削し得る改良型ベニヤレースを提供す
ることを等を目的とするもので、その詳細は次に
述べる通りである。 The present invention solves the conventional problems, and enables smooth cutting of hard logs, soft logs in the center, logs with cracks, etc., which were difficult to cut with conventional veneer laces, and prevents curling. The purpose of this invention is to provide an improved veneer lace that can cut a reduced amount of veneer veneer, the details of which are as follows.

本発明に係るベニヤレースの基礎は、原木切削
に要する動力の少なくとも一部を、切削用刃物の
刃先の幾分上手の切削直前の原木外周へ供給し得
る構造にある。その動力供給の媒体は、外周に多
数の突刺体を有する駆動部材を軸方向に適宜の間
隔を隔てて複数個配設して成る駆動ロールであ
り、従来の考え方のロールバーに比べれば幾分大
径であり、その取り付け位置は、切削用刃物の刃
先より幾分上手の、少なくとも原木の表面に接触
する位置であつて、適宜の駆動機構により常態に
於て略一定の周速で駆動され、積極的に原木に動
力を供給する。 The basis of the veneer lace according to the present invention is a structure that allows at least part of the power required for cutting the log to be supplied to the outer periphery of the log just before cutting, slightly above the cutting edge of the cutting blade. The medium for power supply is a drive roll, which is made up of a plurality of drive members having a large number of protrusions on the outer periphery, arranged at appropriate intervals in the axial direction, and is somewhat smaller than the conventional roll bar. It has a large diameter, and is mounted at a position slightly higher than the cutting edge of the cutting tool, at least in contact with the surface of the raw wood, and is normally driven at a substantially constant peripheral speed by an appropriate drive mechanism. , actively powering logs.

切削直前の原木外周に動力を供給するようにし
た効果は、先ず動力伝達の原木部分の経路が極端
に短いことであり、切削部と駆動部は原木のほぼ
同一円周上にあるため、その二つの部分及びその
中間の材質の違いが少なく、また駆動部に従来の
ような大きな力のモーメントが生じることはな
く、従つて駆動の不能化及び原木の破壊が大幅に
改善され得ることである。 The effect of supplying power to the outer circumference of the log just before cutting is that the power transmission path through the log is extremely short, and since the cutting section and the drive section are on almost the same circumference of the log, There is little difference in the materials between the two parts and the material between them, and there is no large moment of force generated in the drive part as in the conventional case, so the possibility of disabling the drive and destroying the log can be greatly improved. .

また前記駆動ロールは各駆動部材を軸方向に適
宜の間隔を隔てて複数個配設したものであるか
ら、原木に対するラジアル方向の押圧力が過大に
増大して該原木を破壊する虞が極めて少ないのは
勿論のこと、駆動の関係上従来のロールバーに比
べて幾分大径化する必要があり、而も積極的に駆
動する構造である為、刃物と駆動ロールの間に形
成されるベニヤ単板の吐出口の流れは著しく円滑
化され、従つて応力割れ・乾燥割れ等に起因して
多く発生する原木の欠片が、切削部に詰まる虞は
殆んどなく、所謂刃詰まりの生ずる確率は従来に
比べて著しく少なくなる。 Furthermore, since the drive roll has a plurality of drive members arranged at appropriate intervals in the axial direction, there is extremely little possibility that the pressing force in the radial direction against the log will increase excessively and destroy the log. Needless to say, the diameter of the roll bar needs to be somewhat larger than that of conventional roll bars due to the drive, and since it is an actively driven structure, the veneer formed between the cutter and the drive roll is The flow at the outlet of the veneer is significantly smoother, so there is almost no chance that wood fragments, which often occur due to stress cracking, drying cracks, etc., will get stuck in the cutting area, reducing the probability of so-called blade jamming. is significantly smaller than before.

従つてベニヤレースにより円滑にベニヤ単板化
し得る適用原木の範囲は一挙に拡大され、材料歩
留りの向上及び資源の有効利用更には装置の嫁動
率の向上等を図り得るものである。 Therefore, the range of applicable logs that can be smoothly made into veneers by veneer lace is expanded all at once, and it is possible to improve the material yield, the effective use of resources, and the efficiency of the device.

また更に本発明に係るベニヤレースは、前記駆
動ロールの各駆動部材の間の適宜複数の空間に、
固定バー又はロールバー等のプレツシヤバーを配
設して、原木とベニヤ単板との境界付近の押圧を
可能化したものであるから、切削されるベニヤ単
板の切削肌が従来に比べて悪化する虞はなく、む
しろプレツシヤバーを弾性的に備えた場合は、よ
り均一な押圧が可能となつて、ベニヤ単板の切削
肌が従来に比べて良化する傾向にあり、而も駆動
ロールの駆動部材の突刺体によつてベニヤ単板の
表面に突刺傷又は割れが形成されるので、該ベニ
ヤ単板のカールが低減されることなり、ベニヤレ
ース以降に於けるベニヤ単板の処理工程が著しく
簡略化し得る。 Furthermore, the veneer lace according to the present invention is provided in a plurality of spaces between each drive member of the drive roll, as appropriate.
Since a pressure bar such as a fixed bar or roll bar is installed to enable pressure near the boundary between the raw wood and the veneer veneer, the cutting surface of the veneer veneer being cut is worse than before. There is no risk; in fact, if the pressure bar is elastically provided, more uniform pressure is possible, and the cutting surface of the veneer veneer tends to be better than before, and the drive member of the drive roll is Since puncture wounds or cracks are formed on the surface of the veneer veneer by the pierced body, curling of the veneer veneer is reduced, and the processing process of the veneer veneer after veneer lace is significantly simplified. can be converted into

以下本発明に係るベニヤレースを好ましい実施
例と共に詳述すれば次の通りであるが、図面及び
説明は比較的要所のみを記載するに留め、公知技
術により容易に実施し得る部分は、煩雑化を避け
る為にできるだけ省略する。 The veneer lace according to the present invention will be described in detail below along with preferred embodiments, but the drawings and explanations will only show relatively important parts, and the parts that can be easily implemented using known techniques will be explained in detail. omitted as much as possible to avoid confusion.

即ち、本発明の第１番目の発明に係るベニヤレ
ースの好ましい第１実施例としては、第１図、第
２図、第３図及び第５図に例示する如く、外周に
多数の突刺体１０を有する駆動部材１６を軸方向
に適宜の間隔を隔てて複数個配設して成る駆動ロ
ール５を、切削用刃物２の刃先に近いプレツシヤ
ーバー台８側の位置に備えると共に、前記駆動ロ
ール５の各駆動部材１６の間の適宜複数の空間９
に、プレツシヤバー３を配設し、更に例えば鎖１
１、鎖車２３、電動機等の駆動源１２等から成
り、鎖車２４を介して前記駆動ロール５を常態に
於て略一定の周速で駆動する駆動機構と、例えば
駆動部材２６、直流電動機等の可変速駆動源２７
等から成り、スピンドル２８を介して原木１を回
転させる変速可能なスピンドル駆動機構とを備
え、而も例えば固定アーム３２、回転符号器等の
速度設定器４０、刃車４１，４２及び揺動アーム
４３等から成り、刃物台４の位置又は移動に基づ
いて、前記スピンドル駆動機構の出力回転数を、
スピンドル２８と切削用刃物２との間隔とは逆比
例的に増減せしめるよう制御する制御機構を備え
て、スピンドル２８による原木回転周速を、駆動
ロール５による原木駆動周速と略同期させ、原木
１を通常において略々一定した周速で回転又は駆
動するよう構成し、更に常法通り例えばギヤーボ
ツクス２９、駆動部材３１等から成り、送りネジ
３０を介して刃物台４、プレツシヤバー台８等を
往復移動させる送り機構を付設する。 That is, as a preferred first embodiment of the veneer lace according to the first aspect of the present invention, as illustrated in FIGS. A drive roll 5 comprising a plurality of drive members 16 arranged at appropriate intervals in the axial direction is provided at a position on the pressure bar stand 8 side near the cutting edge of the cutting blade 2, and A plurality of spaces 9 as appropriate between each drive member 16
, a pressure bar 3 is disposed, and furthermore, for example, a chain 1
1. A drive mechanism consisting of a chain wheel 23, a drive source 12 such as an electric motor, etc., which normally drives the drive roll 5 at a substantially constant circumferential speed via the chain wheel 24, and a drive member 26, for example, a DC motor. Variable speed drive source 27 such as
It is equipped with a variable speed spindle drive mechanism that rotates the log 1 via a spindle 28, and includes, for example, a fixed arm 32, a speed setting device 40 such as a rotation encoder, blade wheels 41, 42, and a swinging arm. 43 etc., and the output rotation speed of the spindle drive mechanism is controlled based on the position or movement of the tool rest 4.
It is equipped with a control mechanism that controls the distance between the spindle 28 and the cutting blade 2 to be increased or decreased in inverse proportion to the rotation speed of the log by the spindle 28, which is approximately synchronized with the peripheral speed of the log driven by the drive roll 5. 1 is normally configured to rotate or drive at a substantially constant circumferential speed, and further comprises a gear box 29, a driving member 31, etc. as usual, and a tool rest 4, a pressure bar rest 8, etc. via a feed screw 30. A feeding mechanism for reciprocating movement is attached.

例えば前記の如き構成で成るベニヤレースによ
れば、原木を切削するに際して、切削に要する動
力の少なくとも一部を、駆動ロールを介して、原
木の外周部へ供給することができ、而も該動力供
給は、切削用刃物の刃先に近い切削直前の原木外
周部へ行うものであるから、従来の如き原木破壊
等の不都合を惹起する虞は少なく、更に前記駆動
ロールは、駆動部材を軸方向に適宜の間隔を隔て
て複数個配設したものであるから、原木のラジア
ル方向への押圧力が過度に増大して該原木を破損
する虞も少なく、極めて効果的に駆動を行なうこ
とができると共に、前記駆動ロールは、駆動の関
係上従来のロールバーに比べて幾分大径化する必
要があり、且つ積極的に駆動する構造であるか
ら、刃物と駆動ロールの間に形成されるベニヤ単
板の吐出口に於ける流れは著しく円滑化され、従
つて応力割れ・乾燥割れ等に起因して多く発生す
る原木の欠片が、切削部に詰まる虞は殆どなく、
所謂刃詰まりの生ずる確率は従来に比べて著しく
少なくなる。そこで結果的に円滑にベニヤ単板化
し得る適用原木の範囲は一挙に拡大され、材料歩
留りの向上及び資源の有効利用更には装置の嫁動
率の向上等を図り得る。 For example, according to the veneer lace having the above configuration, when cutting a log, at least a part of the power required for cutting can be supplied to the outer circumference of the log via the drive roll, and the power Since the supply is carried out to the outer periphery of the log just before cutting, which is close to the cutting edge of the cutting tool, there is less risk of causing problems such as destruction of the log as in the past. Since a plurality of these are arranged at appropriate intervals, there is little risk of the pressing force in the radial direction of the log increasing excessively and damaging the log, and driving can be carried out extremely effectively. , the drive roll needs to have a somewhat larger diameter than a conventional roll bar due to its drive, and has a structure in which it is actively driven, so the veneer unit formed between the blade and the drive roll is The flow at the outlet of the board is significantly smoother, so there is little risk that wood chips, which often occur due to stress cracking, drying cracks, etc., will clog the cutting area.
The probability of so-called blade jamming occurring is significantly lower than in the past. Therefore, as a result, the range of applicable logs that can be smoothly made into veneer veneers is expanded at once, and it is possible to improve the material yield, the effective use of resources, and the improvement of the conversion rate of the equipment.

また前記駆動ロールの各駆動部材の間の適宜複
数の空間には、プレツシヤバーを配設するもので
あるから、従来とほぼ同様に原木とベニヤ単板と
の境界付近を押圧することが可能で、ベニヤ単板
の切削肌が従来に比べて悪化する虞もなく、良好
な切削肌のベニヤ単板を円滑に削成することがで
きるのは勿論のこと、駆動ロールの駆動部材の突
刺体によつてベニヤ単板の表面に突刺傷又は割れ
が形成されるので、該ベニヤ単板のカールが低減
されることなり、ベニヤレース以降に於けるベニ
ヤ単板の処理工程が著しく簡略化し得る。 In addition, since pressure bars are disposed in a plurality of spaces between the respective drive members of the drive roll, it is possible to press the vicinity of the boundary between the raw wood and the veneer veneer in almost the same way as in the past. Not only can the veneer veneer with good cutting surface be smoothly cut without the risk of deterioration of the cutting surface of the veneer veneer compared to the conventional method, but it is also possible to cut the veneer veneer with good cutting surface smoothly. Since puncture wounds or cracks are formed on the surface of the veneer veneer, curling of the veneer veneer is reduced, and the processing steps for the veneer veneer after veneer lace can be significantly simplified.

また更にスピンドルによる原木回転周速を、駆
動ロールによる原木駆動周速と略同期させるよう
にした、スピンドル駆動機構が備えられているこ
とにより、切削開始時に於て、原木を回転させつ
つ該原木に刃物台を接近させ得て、駆動ロールに
よる駆動を容易且つ円滑に開始させることがで
き、而もスピンドルよる原木回転周速及び駆動ロ
ールによる原木駆動周速は、常態に於て略一定で
あるから、結果的に切削されるベニヤ単板の吐出
速度も略一定となるので、ベニヤレース以降に於
けるベニヤ単板の処理工程が定速化し得て、処理
の自動化・容易化を図ることが可能となり、無
論、原木の回転に忠実に関連する送り機構が付設
されているので、駆動ロールによる駆動が開始さ
れた後も、均一な厚さを有するベニヤ単板を切削
し得る。 Furthermore, by providing a spindle drive mechanism that synchronizes the circumferential speed of the log rotation by the spindle with the circumferential speed of the log drive by the drive roll, at the start of cutting, the log is rotated and The turret can be brought close to each other, and the driving by the drive roll can be started easily and smoothly, and the circumferential speed of rotation of the log by the spindle and the circumferential speed of driving the log by the drive roll are approximately constant under normal conditions. As a result, the discharge speed of the cut veneer veneer is also approximately constant, so the processing process of the veneer veneer after veneer lace can be made constant, making it possible to automate and simplify the process. Of course, since a feeding mechanism is attached that faithfully relates to the rotation of the log, a veneer veneer having a uniform thickness can be cut even after the driving roll starts.

尚、駆動ロールを切削用刃物の刃先に近いプレ
ツシヤーバー側の位置に備える好例として、第１
図に例示する如く、駆動部材１６の外周の突刺体
１０が、切削用刃物２の刃先より上手の原木外周
部と、切削直前のベニヤ単板６との双方を突刺す
る位置に備えれば、駆動部材１６の突刺体１０に
よつて、ベニヤ単板６の表面から突刺傷が形成さ
れると共に、駆動ロール５が駆動されることによ
つて、切削直後のベニヤ単板６がその吐出方向へ
幾分引つ張られ、規制された率で伸ばされる為
に、一層カールの少ない良好なベニヤ単板６が吐
出路７から吐出されることが実験過程で判明した
が、例えば第４図に例示する如く、駆動部材の突
刺体が切削直前の原木外周部のみを突刺可能な位
置に駆動ロールを備えるようにしても、実用的に
は差支えない。 In addition, as a good example of providing the drive roll at a position on the pressure bar side near the cutting edge of the cutting tool, the first
As illustrated in the figure, if the piercing body 10 on the outer periphery of the driving member 16 is provided at a position where it pierces both the outer periphery of the log above the cutting edge of the cutting knife 2 and the veneer veneer 6 just before cutting, The punctures 10 of the drive member 16 form puncture wounds on the surface of the veneer veneer 6, and the drive roll 5 drives the veneer veneer 6 immediately after cutting in its discharge direction. It has been found in the course of experiments that a good veneer veneer 6 with less curl is discharged from the discharge passage 7 because it is stretched to some extent and at a regulated rate. Thus, it is practically acceptable even if the driving roll is provided at a position where the piercing body of the driving member can pierce only the outer peripheral portion of the raw wood immediately before cutting.

次に本発明の第１番目の発明に係るベニヤレー
スの好ましい第２実施例としては、第１図、第２
図、第３図及び第５図からも明らかな如く、前記
第１番目の発明に係るベニヤレースの説明で述べ
た好ましい実施例の構成に更に加えて、駆動ロー
ル５と切削用刃物２との間に形成されるベニヤ単
板６の通路１４の切削用刃物側に、凸状の単板案
内面１８を有する単板案内部１３を、また一方駆
動ロール側には、適宜形状の単板誘導面２１を有
する単板誘導部材２０をそれぞれ設けることによ
つて、前記ベニヤ単板６の通路１４を屈曲状に形
成するものである。 Next, as a second preferred embodiment of the veneer lace according to the first aspect of the present invention, FIGS.
As is clear from FIGS. 3 and 5, in addition to the structure of the preferred embodiment described in the explanation of the veneer lace according to the first invention, the driving roll 5 and the cutting blade 2 are A veneer guide part 13 having a convex veneer guide surface 18 is provided on the cutting tool side of the passage 14 of the veneer veneer 6 formed between them, and a veneer guide section 13 having an appropriately shaped veneer guide is provided on the drive roll side. By providing each veneer guide member 20 having a surface 21, the passage 14 of the veneer veneer 6 is formed into a curved shape.

図中、１５は駆動ロール５の軸、１９は駆動ロ
ール５の軸受箱、２２刃物押え、２５は罫引刃、
３３は分割状の単板案内部１３を止めるビスであ
る。 In the figure, 15 is the shaft of the drive roll 5, 19 is the bearing box of the drive roll 5, 22 is the cutter holder, 25 is the scoring blade,
33 is a screw for fixing the divided veneer guide portion 13.

例えば前記の如き構成で成るベニヤレースによ
れば、切削されたベニヤ単板は、屈曲状の通路に
於て駆動ロールから切削用刃物側へ屈曲させられ
つつ通過するので、駆動ロールの駆動部材の突刺
体によつて形成された突刺傷又は割れが一段と拡
大・助長される結果、更に一層カールの少ない良
好なベニヤ単板が吐出路から吐出されることにな
り、ベニヤレース以降に於けるベニヤ単板の処理
工程が格別に著しく簡略化し得る。また更に敢て
言及すれば、従来のベニヤレースに於て、前述の
如くベニヤ単板の通路を屈曲状に形成した場合
は、摩擦抵抗等により該ベニヤ単板の通過が困難
となつて、通路内に詰まる虞があるが、前記の如
き構成によれば、駆動ロールの駆動部材の突刺体
によつてベニヤ単板への確実な移送力が確保され
るので、ベニヤ単板が通路内に詰まる虞れもな
く、突刺体による確実な移送と屈曲状の通路との
相乗効果によつて、格段にカールの少ない状態の
ベニヤ単板を極めて円滑に吐出路へ吐出させるこ
とができる。 For example, according to the veneer race having the above-mentioned configuration, the cut veneer veneer passes through the curved path while being bent from the drive roll toward the cutting blade, so that the drive member of the drive roll is As a result of the puncture wounds or cracks formed by the puncture body being further enlarged and promoted, a good veneer veneer with even less curl is discharged from the discharge path, and the veneer veneer after the veneer lace is The processing steps for the board can be particularly significantly simplified. Furthermore, in a conventional veneer lace, when the path of the veneer veneer is formed in a curved shape as described above, it becomes difficult for the veneer veneer to pass through due to frictional resistance etc. However, with the above-described configuration, the pierced body of the drive member of the drive roll ensures a reliable transfer force to the veneer veneer, so that the veneer veneer does not get stuck in the passage. Without any fear, due to the synergistic effect of the reliable transport by the piercing body and the curved path, the veneer veneer with significantly less curl can be discharged into the discharge path extremely smoothly.

尚、前記いずれの発明に係るベニヤレースに於
ても、駆動ロールからの動力供給の割合は、原木
の材質等に応じて適宜設定すれば差支えなく、例
えば駆動ロールによる駆動が開始された後は、ス
ピンドル駆動機構よる回転を断つようにしても、
或は高級台板の表板を切削する場合の如く、ベニ
ヤ単板の表面への突刺体による突刺傷の形成を回
避したい場合等は、例えば駆動ロールを後退させ
る等の手段に用いて、駆動ロールの駆動を断つよ
うにしても差支えないが、いずれにせよ、スピン
ドルによる原木回転周速と、駆動ロールによる原
木駆動周速とは必ずしも厳密に同期させる必要は
なく、一定の周速で駆動される駆動ロールによる
原木回転数は、原木の小径化に伴つて、第７図に
於て曲線３７で示す如く上昇するので、例えばス
ピンドルによる原木回転数を、第７図に於て曲線
３８で示す如く上昇させ、スピンドルによる原木
回転周速を、駆動ロールによる原木駆動周速より
幾分大に設定した場合は、駆動ロールによる動力
供給をスピンドル駆動機構が援助することにな
り、また逆にスピンドルによる原木回転周速を、
駆動ロールによる原木駆動周速よりも幾分小に設
定した場合は、スピンドル駆動機構による原木回
転を、駆動ロールが援助することになるので、い
ずれの場合も実用的に差支えなく、更にスピンド
ルによる原木回転周速を、駆動ロールによる原木
駆動周速より幾分大に設定する場合は、駆動ロー
ルの駆動機構に、オーバーランニング装置を付設
するか、或はそれとは別途に又は更に加えて、第
５図に例示する如く、スピンドル駆動機構に、必
要に応じて調整機構を設けた伝達トルクを制限す
るためのトルクリミター類３９を付設するように
すれば、双方の周速差によつて惹起される虞があ
る弊害を、回避或は軽減することができ、他方ス
ピンドルによる原木回転周速を、駆動ロールによ
原木駆動周速よりも幾分小に設定する場合も、駆
動ロールの駆動機構に、必要に応じて調整機構を
設けた伝達トルクを制限するためのトルクリミタ
ー類を付設するようにすれば、双方の周速差によ
つて惹起される虞がある弊害を、回避或は軽減す
ることができ、又はスピンドル駆動機構に、オー
バーランニング装置を付設すれば、駆動ロールに
よる駆動の開始と同時に、スピンドル駆動機構に
よる回転を自動的に断つたことができ、いずれも
実用上効果的である。 In addition, in the veneer lace according to any of the above inventions, the ratio of power supply from the drive roll can be set as appropriate depending on the material of the raw wood, etc. For example, after the drive by the drive roll has started, , even if the rotation by the spindle drive mechanism is cut off,
Alternatively, when it is desired to avoid the formation of puncture marks on the surface of a veneer veneer, such as when cutting the top plate of a high-grade baseboard, for example, the drive roll can be moved backwards, There is no problem in cutting off the drive of the rolls, but in any case, it is not necessary to strictly synchronize the circumferential speed of log rotation by the spindle and the circumferential speed of log drive by the drive roll, and it is not necessary to strictly synchronize the circumferential speed of log rotation by the spindle and the circumferential speed of logs driven by the drive roll. The number of rotations of logs by the drive roll increases as the diameter of the logs becomes smaller, as shown by curve 37 in FIG. If the circumferential speed of log rotation by the spindle is set to be somewhat higher than the circumferential speed of log drive by the drive roll, the spindle drive mechanism will assist the power supply by the drive roll, and conversely, the rotation speed of the log by the spindle will be increased. Log rotation circumferential speed,
If the circumferential speed is set to be somewhat lower than the circumferential speed at which the log is driven by the drive roll, the drive roll will assist the rotation of the log by the spindle drive mechanism, so there is no practical problem in either case. When the rotational peripheral speed is set to be somewhat higher than the log driving peripheral speed by the drive roll, an overrunning device is attached to the drive mechanism of the drive roll, or separately or in addition, a fifth As illustrated in the figure, if the spindle drive mechanism is provided with a torque limiter 39 for limiting the transmitted torque, which is provided with an adjustment mechanism as necessary, the problem caused by the difference in peripheral speed between the two Possible adverse effects can be avoided or reduced. On the other hand, even when the circumferential speed of log rotation by the spindle is set to be somewhat lower than the circumferential speed of log drive by the drive roll, the drive mechanism of the drive roll may be By attaching a torque limiter to limit the transmitted torque with an adjustment mechanism as necessary, it is possible to avoid or reduce the adverse effects that may be caused by the difference in circumferential speed between the two sides. Alternatively, by attaching an overrunning device to the spindle drive mechanism, the rotation by the spindle drive mechanism can be automatically cut off at the same time as the drive roll starts driving, both of which are practically effective.

また前記の如くスピンドル駆動機構の出力回転
数を、スピンドルと切削用刃物との間隔とは逆比
例的に増減せしめるよう制御する制御機構として
は、第５図に例示する如き構成のものの他に、例
えば第６図に例示する如く、刃物台又はフレーム
等の固定部のいずれか一方に速度設定器４０を、
他方にカム３６をそれぞれ備え、速度設定器４０
の刃車４１と係合する刃車４２に、揺動アーム３
５を付設し、該揺動アーム３５の接触子３４をカ
ム３６に接触させて、刃物台の移動に基づきスピ
ンドル駆動機構の出力回転数を制御するようにし
た制御機構、或は図示は省略したが、適宜位置に
配設した摺動抵抗器の、摺動に伴う抵抗値の変化
を利用して制御するようにしたもの、更には送り
ネジの回転を利用して制御するようにしたもの
等、公知技術を活用して種々の制御機構を構成す
ることが可能である。 Furthermore, as a control mechanism that controls the output rotation speed of the spindle drive mechanism to increase or decrease in inverse proportion to the distance between the spindle and the cutting blade as described above, in addition to the configuration as illustrated in FIG. For example, as illustrated in FIG.
The other side is provided with a cam 36, and a speed setting device 40.
The swinging arm 3 is attached to the blade wheel 42 that engages with the blade wheel 41 of
5, the contactor 34 of the swing arm 35 is brought into contact with the cam 36, and the output rotation speed of the spindle drive mechanism is controlled based on the movement of the tool post, or a control mechanism (not shown) is provided. However, there are those that are controlled by using the change in resistance value caused by sliding of a sliding resistor placed at an appropriate position, and those that are controlled using the rotation of a feed screw, etc. , it is possible to configure various control mechanisms using known techniques.

また本発明に係るベニヤレースの駆動ロール
は、駆動部材の部分を含めて一体構造とした形態
と、適宜部分毎に分けて、例えば駆動部材の部分
と軸の部分とに分けて、それを組合わせるように
した形態との双方の形態で構成することが可能で
あり、図示は省略したが、軸に対して駆動部材を
嵌装すると共に、キー等を用いて駆動部材を軸に
係止する構成にすれば、駆動部材が消耗した場合
の交換等が容易で至便であり、また各駆動部材の
軸方向の間隔は、略等間隔状或は不等間隔状のい
ずれでも差支えなく、而も比較的狭い（例えば40
mm以下）方が好ましいが、いずれにしても、駆動
部材の幅も比較的狭い（例えば10mm以下）方が好
ましく、更に突刺体は、原木への切込傷を少なく
しつつ押圧力を低減する意味から、実施例に例示
するように、軸方向にほぼ平行であるのが好まし
く、必要に応じては回転方向と同方向又は逆方向
に幾分傾むけても差支えないが、そうした形態に
限らず、原木外周へ突刺可能な形態であれば実用
上差支えない。 Furthermore, the veneer lace drive roll according to the present invention can be constructed in one piece, including the drive member, or divided into parts as appropriate, for example, the drive member and the shaft, and assembled together. Although not shown in the drawings, the driving member is fitted onto the shaft and the driving member is locked onto the shaft using a key or the like. With this structure, it is easy and convenient to replace the driving members when they are worn out, and the axial spacing of each driving member can be either approximately equal intervals or unequal intervals; Relatively narrow (e.g. 40
mm or less), but in any case, it is preferable that the width of the driving member is relatively narrow (for example, 10 mm or less), and furthermore, the piercing body reduces the pressing force while reducing the cutting damage to the raw wood. For the sake of meaning, as illustrated in the examples, it is preferable that it be approximately parallel to the axial direction, and if necessary, it may be inclined somewhat in the same direction or in the opposite direction to the rotation direction, but it is limited to such a form. There is no problem in practical use as long as it is in a form that can be penetrated into the outer circumference of the log.

また前記駆動ロールの支持形態としては、両端
付近で支持する一般的な支持形態の他に、必要に
応じては、更に中間部を支持することも、或は複
数に分割してそれぞれ支持することも可能であ
り、更に必要に応じては、該駆動ロールへ直接的
或は間接的に、刃口開口・駆動一時休止等の為の
往復移動機構を付設するようにしても差支えな
く、またその駆動も、軸の少なくともいずれか一
端から或は中間部から鎖・鎖車或は歯車等を介し
て行なうことができるが、いずれにしても、駆動
機構をプレツシヤーバー台に付設すれば、機構が
簡素化できるので好便であり、更に必要に応じて
は、該駆動機構に変速装置を付設して、一時的に
駆動ロールによる原木駆動周速を増減することも
可能であり、この場合にはスピンドルによる原木
回転周速を同調させるようにすると一層効果的で
ある。 Furthermore, as for the support form of the drive roll, in addition to the general support form in which it is supported near both ends, if necessary, it may be further supported in the middle part, or it may be divided into a plurality of parts and supported individually. Furthermore, if necessary, there is no problem in attaching a reciprocating mechanism to the drive roll, directly or indirectly, for opening the blade opening, temporarily stopping the drive, etc. The drive can also be performed from at least one end of the shaft or from the middle part via a chain, chain wheel, gear, etc., but in any case, if the drive mechanism is attached to the pressure bar stand, the mechanism can be simplified. Furthermore, if necessary, it is also possible to attach a transmission to the drive mechanism to temporarily increase or decrease the circumferential speed at which the drive roll drives the logs.In this case, the spindle It is even more effective to synchronize the circumferential speed of log rotation.

また一方、プレツシヤバーは、前記実施例に例
示する如き、固定バー形式の他に、図示は省略し
たが、ロールバー形式も使用可能であり、或は前
記実施例に例示する如き、分割小片状の形状の他
に、例えば第４図に例示する如く、小断面１７で
押圧部分を連接させ、駆動ロールの駆動部材を臨
ませる適数の溝を形成した略櫛状のものでも差支
えなく、更に前記実施例に例示する如く、プレツ
シヤバー台と分離し得る別体構造であれば、摩耗
時に於ける適応性が優れるので効果的であり、更
には該プレツシヤバーを剛体的に備える他に、例
えば前記実施例に例示する如く、プレツシヤバー
台から垂下させる等の取付け構造によつて、弾性
的に備えるようにしても差支えないが、いずれに
せよ、該プレツシヤバーは、各駆動部材の間の総
ての空間に配設する、望ましい形態の他に、適当
に間引きした形態で配設するようにしても、相応
の効果が期待でき、無論、前記駆動ロールと同
様、該プレツシヤバーへ直接的或は間接的に、刃
口開口・押圧力調整等の為の往復移動機構を付設
するようにしても差支えない。 On the other hand, as for the pressure bar, in addition to the fixed bar type as exemplified in the above embodiment, a roll bar type can also be used (not shown), or a divided small piece type as exemplified in the above embodiment. In addition to the shape shown in FIG. 4, for example, it may be a substantially comb-shaped shape in which the pressing portions are connected with each other with a small cross section 17 and an appropriate number of grooves are formed to face the drive member of the drive roll. As exemplified in the above embodiment, a separate structure that can be separated from the pressure bar stand is effective because it has excellent adaptability during wear. As illustrated in the example, the pressure bar may be provided elastically by a mounting structure such as hanging from the pressure bar stand, but in any case, the pressure bar is provided in all the spaces between each driving member. In addition to the preferred form in which the pressure bar is disposed, a corresponding effect can be expected even if it is disposed in an appropriately thinned out form. There is no problem in adding a reciprocating mechanism for adjusting the opening of the blade, pressing force, etc.

また本発明の第１番目の第２実施例に於ては、
屈曲状のベニヤ単板の通路を形成する凸状の単板
案内面を有する単板案内部を、刃物台或は切削用
刃物等とは別体構造として、ビスで止めるように
構成したが、そうした構成に限らず、要は凸状の
単板案内面を形成する構成であれば、分割状・一
体状など如何様な構造であつても良く、また一
方、単板誘導部材の単板誘導面も、前記実施例に
例示する如き形状に限らず、要は駆動ロールの外
周面と共に、屈曲状のベニヤ単板の通路を形成す
る他方の側の誘導面を構成し得る形状であれば足
りるが、いずれにしても、前記単板誘導部材は、
駆動部材の突刺体からベニヤ単板・屑等を円滑に
離脱せしめる作用も合わせて行なうので、それを
目的として、本発明の第１番目の発明に係るベニ
ヤレースに於ける駆動ロールの各駆動部材の適宜
複数の空間に、単独で配置するようにしても差支
えなく、無論、必要に応じては、ベニヤ単板の屈
曲度合を増減させるべく、該単板誘導部材へ直接
的或は間接的に、往復移動機構を付設するように
しても差支えない。 Further, in the first second embodiment of the present invention,
The veneer guide part having a convex veneer guide surface that forms a path for the bent veneer veneer was constructed as a separate structure from the tool rest or the cutting knife, etc., and was fixed with screws. It is not limited to such a structure, but any structure such as a divided structure or an integral structure may be used as long as the structure forms a convex veneer guide surface. The surface is not limited to the shape as exemplified in the above embodiment, but any shape is sufficient as long as it can form the guide surface on the other side that forms the passage of the bent veneer veneer together with the outer peripheral surface of the drive roll. However, in any case, the veneer guiding member is
Since it also functions to smoothly remove the veneer veneer, debris, etc. from the piercing body of the driving member, each driving member of the driving roll in the veneer lace according to the first aspect of the present invention is used for this purpose. There is no problem with placing it alone in multiple spaces as appropriate, and of course, if necessary, in order to increase or decrease the degree of bending of the veneer veneer, it may be placed directly or indirectly on the veneer guiding member. , a reciprocating mechanism may be added.

以上が本発明に係るベニヤレース及びその変更
例についての、いくつかの具体的な構造である
が、いずれにしても、切削中に於ける原木の破壊
及び刃詰まりを解決できる効果は高く、従来に於
て合板不適材とされていた原木等の円滑な切削を
可能化すると共に、将来予想される雑木又は小径
木等の有効な切削をも可能化し得る効果は格別な
ものであり、更に合板製造工程に於ける特に切削
工程を中心とした大幅な生産性向上に貢献するも
のである。 The above are some specific structures of the veneer lace according to the present invention and its modifications, but in any case, they are highly effective in solving the problem of wood destruction and blade clogging during cutting, and In addition to making it possible to smoothly cut logs, etc., which were considered unsuitable materials for plywood, it is also possible to effectively cut miscellaneous trees or small-diameter trees that are expected to be used in the future. This contributes to a significant improvement in productivity in the manufacturing process, especially in the cutting process.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本発明ベニヤレースを説明する為のもの
であつて、第１図及び第４図は切削部を説明する
為の側断面説明図、第２図は第１図の正面図、第
３図は第２図の部分拡大説明図、第５図は全体の
概略説明図、第６図は制御機構の他の実施例の側
面説明図、第７図はスピンドルによる原木回転数
と駆動ロールによる原木回転数との関係を説明す
る為の説明図である。 １…原木、２…切削用刃物、３…プレツシヤバ
ー、４…刃物台、５…駆動ロール、６…ベニヤ単
板、８…プレツシヤバー台、９…駆動部材の空
間、１０…突刺体、１２…駆動源、１３…単板案
内部、１４…ベニヤ単板の通路、１５…軸、１６
…駆動部材、１８…単板案内面、２０…単板誘導
部材、２１…単板誘導面、２７…可変速駆動源、
２８…スピンドル、３０…送りネジ、４０…速度
設定器。 The drawings are for explaining the veneer lace of the present invention, and FIGS. 1 and 4 are side cross-sectional explanatory views for explaining the cutting part, FIG. 2 is a front view of FIG. 1, and FIG. 3 is a front view of FIG. is a partial enlarged explanatory view of Fig. 2, Fig. 5 is a schematic explanatory view of the whole, Fig. 6 is a side explanatory view of another embodiment of the control mechanism, and Fig. 7 is an illustration of the log rotation speed by the spindle and the log by the drive roll. It is an explanatory diagram for explaining the relationship with rotation speed. DESCRIPTION OF SYMBOLS 1... Raw wood, 2... Cutting knife, 3... Pressure bar, 4... Tool post, 5... Drive roll, 6... Plywood veneer, 8... Pressure bar stand, 9... Space for drive member, 10... Pierce body, 12... Drive source, 13... veneer guide section, 14... plywood veneer passage, 15... shaft, 16
... Drive member, 18... Single plate guide surface, 20... Single plate guide member, 21... Single plate guide surface, 27... Variable speed drive source,
28...Spindle, 30...Feed screw, 40...Speed setting device.

Claims (1)

【特許請求の範囲】 １ 外周に多数の突刺体を有する駆動部材を軸方
向に適宜の間隔を隔てて複数個配設して成る駆動
ロールを、前記駆動部材の突刺体が切削直前の原
木外周部と切削直後のベニヤ単板との両方を突刺
可能な切削用刃物の刃先に近いプレツシヤーバー
台側の位置に備えると共に、該駆動ロールの各駆
動部材の適宜複数の空間に、固定バー又はロール
バー等のプレツシヤーバーを配置し、更に前記駆
動ロールを常態に於て略一定の周速で駆動する駆
動機構と、スピンドルを介して原木を回転させる
変速可能なスピンドル駆動機構とを備え、而も刃
物台の位置又は移動に基づき、前記スピンドル駆
動機構の出力回転数を、スピンドルと切削用刃物
との間隔とは逆比例的に増減せしめるよう制御す
る制御機構を備えて、スピンドルによる原木回転
周速を、駆動ロールによる原木駆動周速と同期さ
せ、更に前記駆動ロールと切削用刃物との間に形
成されるベニヤ単板の通路の切削用刃物側に、凸
状の単板案内面を有する単板案内部を、また一方
駆動ロール側には、適宜形状の単板誘導面を有す
る単板誘導部材をそれぞれ設けることによつて、
前記ベニヤ単板の通路を屈曲状に形成して成り、
原木を通路において略々一定した周速で回転又は
駆動すると共に、前記屈曲状の通路に於て切削し
たベニヤ単板を駆動ロール側から切削用刃物側へ
屈曲させて、駆動ロールの駆動部材の突刺体によ
つて形成された突刺傷又は割れを助長させるよう
構成したことを特徴とするベニヤレース。 ２ スピンドルによる原木回転周速を、駆動ロー
ルによる原木駆動周速より大にした特許請求の範
囲第１項に記載のベニヤレース。 ３ スピンドルによる原木回転周速を、駆動ロー
ルによる原木駆動周速より小にした特許請求の範
囲第１項に記載のベニヤレース。 ４ オーバーランニング装置を含む駆動ロールの
駆動機構から成る特許請求の範囲第２項に記載の
ベニヤレース。 ５ オーバーランニング装置を含むスピンドル駆
動機構から成る特許請求の範囲第３項に記載のベ
ニヤレース。 ６ 伝達トルクを制限するためのトルクリミター
類を含む駆動ロールの駆動機構から成る特許請求
の範囲第３項に記載のベニヤレース。 ７ 伝達トルクを制限するためのトルクリミター
類を含むスピンドル駆動機構から成る特許請求の
範囲第２項又は第４項に記載のベニヤレース。 ８ 伝達トルクの調整機構を設けたトルクリミタ
ー類から成る特許請求の範囲第６項又は第７項に
記載のベニヤレース。 ９ 刃物台又はフレーム等の固定部のいずれか一
方に備えられ、刃物台の移動に基づいて作動せし
めらる速度設定器を含む制御機構から成る特許請
求の範囲第１項〜第８項のいずれか一つの項に記
載のベニヤレース。[Scope of Claims] 1. A drive roll comprising a plurality of drive members each having a large number of protrusions on the outer periphery arranged at appropriate intervals in the axial direction, the protrusions of the drive member being attached to the outer periphery of the raw wood just before cutting. At the same time, a fixed bar or a roll bar is provided in a plurality of spaces of each drive member of the drive roll as appropriate. and a drive mechanism for driving the drive roll at a substantially constant circumferential speed under normal conditions, and a variable-speed spindle drive mechanism for rotating the raw wood via a spindle, and a tool rest. a control mechanism that controls the output rotational speed of the spindle drive mechanism to increase or decrease in inverse proportion to the distance between the spindle and the cutting blade based on the position or movement of the log; A veneer guide that is synchronized with the circumferential speed of driving the raw wood by the drive roll, and further has a convex veneer guide surface on the cutting blade side of the veneer veneer passage formed between the drive roll and the cutting blade. By providing a veneer guiding member having an appropriately shaped veneer guiding surface on the drive roll side,
The passage of the veneer veneer is formed into a bent shape,
The raw wood is rotated or driven at a substantially constant circumferential speed in the passage, and the cut veneer veneer is bent from the drive roll side to the cutting blade side in the curved passage, and the drive member of the drive roll is rotated or driven. A veneer lace characterized by being configured to promote puncture wounds or cracks formed by the puncture bodies. 2. The veneer lace according to claim 1, wherein the peripheral speed of rotation of the log by the spindle is higher than the peripheral speed of driving the log by the drive roll. 3. The veneer lace according to claim 1, wherein the circumferential speed of log rotation by the spindle is smaller than the circumferential speed of log drive by the drive roll. 4. The veneer lace according to claim 2, comprising a drive mechanism for a drive roll including an overrunning device. 5. A veneer lace according to claim 3, comprising a spindle drive mechanism including an overrunning device. 6. The veneer lace according to claim 3, comprising a drive roll drive mechanism including torque limiters for limiting the transmitted torque. 7. The veneer race according to claim 2 or 4, comprising a spindle drive mechanism including torque limiters for limiting transmitted torque. 8. The veneer lace according to claim 6 or 7, which comprises a torque limiter equipped with a transmission torque adjustment mechanism. 9. Any one of claims 1 to 8 comprising a control mechanism including a speed setter that is provided on either the turret or a fixed part such as a frame and is activated based on movement of the turret. or veneer lace as described in one of the sections.