JPH03248801A - Method for pressing log holding roll of veneer lathe - Google Patents
Method for pressing log holding roll of veneer latheInfo
- Publication number
- JPH03248801A JPH03248801A JP4851690A JP4851690A JPH03248801A JP H03248801 A JPH03248801 A JP H03248801A JP 4851690 A JP4851690 A JP 4851690A JP 4851690 A JP4851690 A JP 4851690A JP H03248801 A JPH03248801 A JP H03248801A
- Authority
- JP
- Japan
- Prior art keywords
- log
- hardness
- roll
- detection
- support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003825 pressing Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000001514 detection method Methods 0.000 claims abstract description 52
- 230000007246 mechanism Effects 0.000 claims description 21
- 239000002023 wood Substances 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 abstract description 11
- 238000012546 transfer Methods 0.000 abstract description 6
- 238000005192 partition Methods 0.000 abstract 2
- 235000019589 hardness Nutrition 0.000 description 25
- 230000001629 suppression Effects 0.000 description 7
- 229910000004 White lead Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000003325 tomography Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Manufacture Of Wood Veneers (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、ベニヤレースの原木支持ロールの押圧力法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pressing force method for log support rolls for veneer lace.
従来より、ベニヤレースに於て、原木の全長と概ね同等
の長さを有する原木支持ロールを、原木外周へ押圧可能
に備え、適時原木を外周がら支持することにより、単板
切削用刃物の切削抵抗、プレッシャバーの加圧抵抗等、
刃口部に於ける各種抗力の作用に起因する原木の撓みを
防止或は低減せんとする試みが成されており、その押圧
力法としては、所望時に一定の押圧力を以って原木支持
ロールを原木に押圧する、所謂定圧式の押圧力法と、所
望時に一定の量（深さ）だけ原木支持ロールを原木の外
周面へ減込ませる、所謂定位置式の押圧力法との、二つ
に大別されるが、いずれも、性状が異る雑多な原木を良
好に支持するには不向きであった。Conventionally, in veneer lace, a log supporting roll having a length approximately equal to the total length of the log is provided so that it can be pressed against the outer circumference of the log, and by supporting the log from the outer periphery at the appropriate time, cutting with a blade for cutting veneer is possible. Resistance, pressure resistance of pressure bar, etc.
Attempts have been made to prevent or reduce the bending of logs caused by the effects of various drag forces at the cutting edge. There are two methods: a so-called constant pressure type pressing force method in which a roll is pressed against the log, and a so-called fixed position type pressing force method in which the log support roll is reduced by a certain amount (depth) to the outer circumferential surface of the log at a desired time. They are broadly divided into two types, but all of them are unsuitable for supporting a variety of logs with different properties.
即ち、刃口部に於ける各種抗力の大きさは、原木の硬さ
に応じて増減するものであるから、原木の硬さに拘りな
く定数的に抑圧度合を定める前記いずれの押圧力法によ
っても、原木の支持力に過不足が生じるのは当然であり
、仮に作業者が原木全体の硬さを目測等で推定して、原
木支持ロールの押圧力又は位置を調節するとしても、例
えば定圧式の支持方法に於ては、原木の節等の硬質部分
が刃口部を通過する際に、支打力が不足する傾向が著し
く、或は定位置式の支持方法にあっては、原木の硬質部
分が原木支持ロールの位置を通過する際に、支持力が過
剰となる傾向が著しいなど、特に原木の局部的な硬さの
違いに適確に対応しつつ、原木を良好に支持するには甚
だ不向きであった。In other words, since the magnitude of the various drag forces at the cutting edge increases or decreases depending on the hardness of the raw wood, by any of the above pressing force methods that determine the degree of suppression constant regardless of the hardness of the raw wood, However, it is natural that there will be excess or deficiency in the supporting capacity of the log, and even if the worker estimates the hardness of the entire log by visual measurement and adjusts the pressing force or position of the log support roll, for example, In pressure-type support methods, there is a marked tendency for the support force to be insufficient when hard parts such as knots of the log pass through the cutting edge, or in fixed-position support methods, When the hard part passes through the position of the log support roll, there is a marked tendency for the supporting force to become excessive, so it is difficult to properly support the log while accurately responding to local differences in hardness of the log. was extremely unsuitable.
本発明は、前記従来の抑圧方法の欠点を解決課題として
開発したものであり、具体的には、原木の全長と概ね同
等の長さを有する原木支持ロールを長さ方向に於て複数
に区画して、各区画毎に押圧力を調整可能に備えると共
に、該原木支持ロールの各区画の位置に準ずる原木の部
分４σの硬さを検知機構によって順次検知し、該検知機
構からの検知信号に基き、刃口部を通過する原木の部分
毎の硬さに対応させて、前記原木支持ロールの各区画毎
に押圧力を順次調整するようにした押圧方法を提案する
。The present invention was developed to solve the problem of the drawbacks of the conventional suppression methods, and specifically, the present invention involves partitioning a log support roll having a length roughly equal to the total length of the log into a plurality of sections in the length direction. The pressing force is adjustable for each section, and a detection mechanism sequentially detects the 4σ hardness of a portion of the log corresponding to the position of each section of the log support roll, and a detection signal from the detection mechanism is used. Based on this, we propose a pressing method in which the pressing force is sequentially adjusted for each section of the log support roll in accordance with the hardness of each portion of the log passing through the cutting edge.
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。Hereinafter, the present invention will be described in more detail with reference to an example of implementation illustrated in the drawings.
第１図は本発明の実施に用いるベニヤレースの側面説明
図であり、第２図は支持機構の部分平面説明図であり、
第３図は検知機構の部分正面説明図である。FIG. 1 is an explanatory side view of the veneer lace used in carrying out the present invention, and FIG. 2 is a partial plan explanatory view of the support mechanism.
FIG. 3 is a partial front explanatory view of the detection mechanism.
図中、Ａは、次に詳述する鉛白１、進退装置３、外周駆
動ロール４、スピンドル６等から成る公知の旋削機構で
あって、原木２５から単板２６を削成する。In the figure, A is a known turning mechanism consisting of a white lead 1, an advancing/retracting device 3, an outer peripheral drive roll 4, a spindle 6, etc., which will be described in detail below, and cuts a veneer 26 from a log 25.
即ち、鉛白１は、複数の分割式のプレッシャバー２ａを
旧設したプレッシャバー台２、外周駆動ロール４、単板
切削用刃物１１等を有し、後記進退装置３の作動に伴い
、随時図示矢印方向へ進退せしめられる。That is, the lead white 1 has a pressure bar stand 2 with a plurality of split pressure bars 2a, an outer circumferential drive roll 4, a blade 11 for cutting veneer, etc. It is moved forward and backward in the direction of the arrow shown in the figure.
進退装置３は、ボールネジ等から成る送りネジ３ａ、サ
ーボモータ等から成る可変速駆動源３ｂ、ロータリエン
コータ等から成る位置検出器３０等を有し、後記制御装
置２４の制御を得て、鉛白１を図示矢印方向に進退させ
る。The advancing/retracting device 3 has a feed screw 3a made of a ball screw or the like, a variable speed drive source 3b made of a servo motor or the like, a position detector 30 made of a rotary encoder, etc., and under the control of a control device 24 described later, Move White 1 forward and backward in the direction of the arrow shown.
外周駆動ロール４は、模状・角錐状等の形状を成す多数
の突刺体４ａを外周部に突設した駆動部相４ｂを軸芯方
向に適宜の間隔を隔てて複数個有し、前記突刺体４ａが
旋削直前の原木外周部を突刺可能な位置に於て、鉛白１
に旧設され、正相誘導電動機等から成る定速駆動源５の
作動を得て、旋削直前の原木外周部へ旋削に要する動力
の大部分を供給する。The outer periphery drive roll 4 has a plurality of drive part phases 4b having a large number of protrusions 4a in the shape of a model, a pyramid, etc. projecting from the outer periphery at appropriate intervals in the axial direction. At a position where the body 4a can pierce the outer periphery of the log just before turning, place the lead white 1
A constant-speed drive source 5, which was previously installed in the same area and consists of a positive-phase induction motor, is operated to supply most of the power required for turning to the outer periphery of the log just before turning.
スピンドル６は、左右一対を成して原木両端側に出入自
在に位置し、直流電動機等から成る可変速駆動源７の作
動を得て、原木２５を図示矢印方向へ回転させる。The spindles 6 are arranged as a left and right pair and are movable in and out from both ends of the log, and rotate the log 25 in the direction of the arrow shown in the figure under the operation of a variable speed drive source 7 consisting of a DC motor or the like.
Ｂは、次に詳述する支持フレーム８、移動装置９、原木
支持ロール１０等から成る支持機構であって、原木２５
を外周から支持する。B is a support mechanism consisting of a support frame 8, a moving device 9, a log support roll 10, etc., which will be described in detail below, and
Support from the outer periphery.
即ち、支持フレーム８は、後記原木支持ロール１０用の
軸受部材１２、ストッパー付のガイドバー１３、ガイド
メタル１４、押圧装置１５等を有し、後記移動装置９の
作動に伴い、適時図示矢印方向へ移動せしめられる。That is, the support frame 8 has a bearing member 12 for the log support roll 10 described later, a guide bar 13 with a stopper, a guide metal 14, a pressing device 15, etc. be moved to.
移動装置９は、移動ネジ９ａ、可変速駆動源９ｂ、位置
検出器９０等を有し、後記制御装置２４の制御を得て、
支持フレーム８を図示矢印方向へ移動させる。The moving device 9 has a moving screw 9a, a variable speed drive source 9b, a position detector 90, etc., and is controlled by a control device 24 described later.
The support frame 8 is moved in the direction of the arrow shown in the figure.
原木支持ロール１０は、全体としては、原木２５の全長
と概ね同等の長さを有し、長さ方向に於て複数に区画さ
れた区画毎には、軸受部材１２によって遊転可能に保持
されると共に、ストッパー伺のガイドバー１３及びガイ
ドメタル１４を介して、図示矢印方向へ往復微動可能に
保持され、後記抑圧装置１５の作動に伴い、個別に原木
外周へ押圧される。The log support roll 10 as a whole has approximately the same length as the entire length of the log 25, and each section divided into a plurality of sections in the length direction is rotatably held by a bearing member 12. At the same time, they are held so as to be able to move slightly back and forth in the direction of the arrow in the figure via the guide bar 13 and guide metal 14 located between the stoppers, and are individually pressed against the outer periphery of the log as the suppressing device 15 described later operates.
抑圧装置１５は、支持フレーム８に付設した油圧シリン
ダ等を用いて構成され、後記制御装置２４の制御を得て
、適切に調整された押圧力を以って、各原木支持ロール
１０を原木外周へ抑圧する。The suppression device 15 is configured using a hydraulic cylinder or the like attached to the support frame 8, and is controlled by a control device 24 (described later) to move each log support roll 10 around the outer circumference of the log using appropriately adjusted pressing force. to suppress.
Ｃは、次に詳述する検知フレーム１６、移送装置１７、
検知ロール１８等から成る検知機構であって、前記原木
支持ロール１０の各区画の位置に準ずる原木２５の部分
毎の硬さを間接的に検知する。C includes a detection frame 16, a transfer device 17, which will be described in detail next.
The detection mechanism includes a detection roll 18 and the like, and indirectly detects the hardness of each portion of the log 25 corresponding to the position of each section of the log support roll 10.
即ち、検知フレーム１６は、後記検知ロール１８用の軸
受部材１９、ストッパー付のガイドバー２０、ガイドメ
タル２１、位置検知器２３等を有し、後記移送装置１７
の作動に伴い、適時図示矢印方向へ移送せしめられる。That is, the detection frame 16 includes a bearing member 19 for the detection roll 18 described later, a guide bar 20 with a stopper, a guide metal 21, a position detector 23, etc., and a transfer device 17 described later.
With the operation of , it is moved in the direction of the arrow shown in the figure.
移送装置１７は、移送ネジ１７ａ、可変速駆動源１７ｂ
、位置検出器１７ｃ等を有し、後記制御装置２４の制御
を得て、検知フレーム１６を図示矢印方向へ移送させる
。The transfer device 17 includes a transfer screw 17a and a variable speed drive source 17b.
, a position detector 17c, etc., and moves the detection frame 16 in the direction of the arrow shown in the figure under the control of a control device 24, which will be described later.
検知ロール１８は、前記原木支持ロール１０の各区画の
位置に準ずるよう複数に区画された夫々が、喫状・角錐
状等の形状を成す多数の突刺体１８ａを外周部に突設し
た検知部材１８ｂを軸芯方向に適宜の間隔を隔てて複数
個有し、軸受部材１９によって遊転可能に保持されると
共に、ストッパー付のガイドバー２０及びガイドメタル
２１を介して図示矢印方向へ往復微動可能に保持され、
而もつる巻きバネ等から成る付勢部材２２の付勢に伴い
、常に原木求芯方向へ伺勢される。The detection roll 18 is a detection member having a plurality of protrusions 18a protruding from the outer periphery, each of which is divided into a plurality of sections so as to correspond to the positions of the respective sections of the log support roll 10, each of which has a shape such as a draft shape or a pyramid shape. 18b are provided at appropriate intervals in the axial direction, and are held freely rotatable by a bearing member 19, and can be slightly reciprocated in the direction of the arrow shown in the figure via a guide bar 20 with a stopper and a guide metal 21. is held in
In addition, as a result of the biasing of the biasing member 22 made of a helical spring or the like, the log is always biased in the centripetal direction.
位置検知器２３は、検知フレーム１６に付設したリニア
エンコーダ等を用いて構成され、ガイドバーを兼ねる検
知パー２０ａを介して、検知フレーム１６と各検知ロー
ル１８との相対位置から、前記原木支持ロール１０の各
区画の位置に準ずる原木２５の部分毎の硬さを間接的に
検知し、検知信号を後記制御装置２４へ順次伝達する。The position detector 23 is configured using a linear encoder etc. attached to the detection frame 16, and detects the relative position of the detection frame 16 and each detection roll 18 via a detection par 20a that also serves as a guide bar. The hardness of each part of the log 25 corresponding to the position of each section of 10 is indirectly detected, and the detection signal is sequentially transmitted to the control device 24 described later.
そして、制御装置２４は、前記各機器類の作動を個別に
制御することも可能ではあるが、少なくとも所望時には
、関連する機器類の作動を有機的に結びつけて制御する
。Although it is possible for the control device 24 to control the operations of each of the devices individually, at least when desired, the control device 24 organically links and controls the operations of related devices.
即ち、原木支持ロール１０の使用時には、前記各位置検
出器３Ｃ・９Ｃ・１７ｃの検出信号に基き、鉛白１の位
置に対応する位置へ、支持フレーム８及び検知フレーム
１６を迅速に初期移動及び初期移送させ、その後更に鉛
白１の原木求芯方向への進行に正確に追従させて、支持
フレーム８及び検知フレーム１６を継続的に移動及び移
送するよう制御し、而も各位置検知器２３の検知信号に
基き、刃口部を通過する原木２５の部分毎の硬さに対応
させて、各押圧装置１５の押圧力を順次調整するよう制
御する。That is, when the log support roll 10 is used, the support frame 8 and the detection frame 16 are quickly initially moved and moved to the position corresponding to the position of the white lead 1 based on the detection signals of the position detectors 3C, 9C, and 17c. The support frame 8 and the detection frame 16 are controlled to be moved and transferred continuously by initially moving and then further accurately following the progress of the white lead 1 in the log centripetal direction, and each position detector 23 Based on the detection signal, the pressing force of each pressing device 15 is controlled to be adjusted sequentially in accordance with the hardness of each part of the log 25 passing through the cutting edge.
また更に、位置検出器３ｃの検出信号に基く鉛白１の位
置を基準として、時々刻々スピンドル６の所要回転数を
算定し、該算定値に基き、可変速駆動源７を変速作動さ
せて、スピンドル６による原木駆動速度と外周駆動ロー
ル４による原木駆動速度とが同調するよう制御する。Furthermore, the required rotation speed of the spindle 6 is calculated moment by moment based on the position of the lead white 1 based on the detection signal of the position detector 3c, and the variable speed drive source 7 is operated at variable speeds based on the calculated value. Control is performed so that the log driving speed by the spindle 6 and the log driving speed by the outer peripheral drive roll 4 are synchronized.
本発明は、例えば前記の如く構成したベニヤレースを用
いて実施するものであって、所望時に、制御装置２４の
制御に基き、支持フレーム８と検知フレーム１６を鉛白
１の位置に対応する位置へ初期移動及び初期移送させる
と、各検知ロール１８の突刺体１８ａが徐々に原木２５
の外周へ突刺されるが、次第に突刺抵抗が増大して、や
がて突刺が困難になるから、付勢部材２２の付勢に抗し
て、各検知ロール１８が順次検知フレーム１６に接近し
、最終的には、付勢部材２２の付勢と突刺抵抗とが丁度
釣合う位置に於て、検知フレーム１６と各検知ロール１
８との相対位置が定められ、各位置検知器２３から制御
装置２４へ検知信号が伝達されので、該検知信号に基い
て、各押圧装置１５の押圧力が調整されることになる。The present invention is implemented using, for example, a veneer lace configured as described above, and when desired, the support frame 8 and the detection frame 16 are moved to a position corresponding to the position of the lead white 1 under the control of the control device 24. When the initial movement and initial transfer is made to
However, the piercing resistance gradually increases and piercing becomes difficult, so each detection roll 18 approaches the detection frame 16 one after another against the biasing force of the biasing member 22. Specifically, the detection frame 16 and each detection roll 1 are placed at a position where the bias of the bias member 22 and the puncture resistance are exactly balanced.
8 is determined, and a detection signal is transmitted from each position detector 23 to the control device 24, so that the pressing force of each pressing device 15 is adjusted based on the detection signal.
従って、その後鉛白ｌの原木求芯方向への進行に正確に
追従させて、支持フレーム８と検知フレーム１６を継続
的に移動及び移送する過程に於て、仮に原木２５の硬さ
が全体的に一様であれば、各検知ロール１８の突刺体１
８ａの突刺深さも全体的に一様となるので、各位置検知
器２３から制御装置２４へ一様な検知信号が伝達され、
制御装置２４の制御により、例えば各押圧装置１５の押
圧力が一様に調整される。Therefore, in the process of continuously moving and transporting the support frame 8 and the detection frame 16 by accurately following the progress of the white lead l in the centripetal direction of the log, it is assumed that the hardness of the log 25 as a whole is uniformly, the piercing body 1 of each detection roll 18
Since the piercing depth of 8a is also uniform throughout, a uniform detection signal is transmitted from each position detector 23 to the control device 24,
Under the control of the control device 24, for example, the pressing force of each pressing device 15 is adjusted uniformly.
また一方、原木２５の何処かに硬さが異る部分が現出し
、特定箇所の検知ロール１８の突刺体１８ａの突刺深さ
が変化して、当該検知ロール１８と原木２５の間隔が変
化し、検知フレーム１６と各検知ロール１８との相対位
置が変位すれば、該当する位置検知器２３から制御装置
２４へ異る検知信号が伝達され、制御装置２４の制御に
より、硬さが異る部分が刃口部を通過する時期（実施例
は、原木が約１７４回転する時期）に合わせて、該当す
る抑圧装置１５の押圧力が、異る硬さに対応するよう調
整されるので、従来の押圧力法の如く原木２５の支持力
に過不足が生じ難く、結果的に、撓みが少ない原木２５
の旋削が可能となるので有益である。On the other hand, a portion with different hardness appears somewhere on the raw wood 25, the piercing depth of the piercing body 18a of the detection roll 18 at a specific location changes, and the distance between the detection roll 18 and the raw wood 25 changes. , if the relative position between the detection frame 16 and each detection roll 18 is displaced, different detection signals are transmitted from the corresponding position detector 23 to the control device 24, and under the control of the control device 24, parts with different hardness are detected. The pressing force of the corresponding suppression device 15 is adjusted to correspond to different hardnesses according to the time when the log passes through the cutting edge (in the example, the time when the log rotates about 174 times), so it is different from the conventional method. As with the pressing force method, the support force of the log 25 is unlikely to be excessive or insufficient, and as a result, the log 25 has less deflection.
This is advantageous because it allows for turning.
尚、本発明の実施に際しては、前記実施例の如き調整の
設定に限らず、他の有効な調整と組合わせる設定の変更
も可能であり、また実施に用いる機器類としても、前記
実施例で用いた機器類に限らず、種々変更して差支えな
いので、次にそれら変更例等に関して詳述する。In addition, when implementing the present invention, it is possible to change not only the adjustment settings as in the above embodiments, but also settings that are combined with other effective adjustments, and the equipment used for implementation may be the same as in the above embodiments. Since various changes may be made in addition to the equipment used, examples of such changes will be described in detail below.
先ず、前記実施例に於ては、原木の硬さが全体的に一様
である場合に、各原木支持ロールの押圧力が一様になる
よう調整を行う設定としたが、原木の撓みは、原木の硬
さによる要因とは別異に、原木が細径化するにつれて漸
増する傾向があり、また両端側から中央部に向かって拡
大する傾向もあるので、原木の部分毎の硬さに１
対応する押圧力の調整に加えて、原木の細径化と反比例
的に、各原木支持ロールの押圧力を漸増させる調整、或
は原木の両端側に位置する原木支持ロールに比べて、原
木の中央部により近い原木支持ロールはど、原則として
常に一定の割合づつ押圧力を増大させる調整の内の、少
なくともいずれか一方の調整を合せて行うよう設定すれ
ば一層有効である。First, in the above embodiment, when the hardness of the log is uniform throughout, the pressing force of each log support roll is adjusted to be uniform, but the bending of the log is , which is different from the hardness factor of the log, tends to increase gradually as the log becomes thinner, and also tends to expand from both ends toward the center, so the hardness of each part of the log tends to increase. 1 In addition to adjusting the corresponding pressing force, the pressing force of each log support roll is gradually increased in inverse proportion to the diameter reduction of the log, or the log is It is more effective to adjust at least one of the methods of increasing the pressing force at a constant rate at all times for the log support rolls closer to the center of the log.
また、前記実施例に於ては、旋削直前の原木外周部から
旋削に要する動力の大部分を供給する、所謂直前外周駆
動式の旋削機構を有するベニヤレースを用いたので、刃
口部に於ける各種抗力の内の、垂直方向の分力は、外周
駆動ロールの駆動力によって相殺され、結局、原木の撓
みの誘因として残るのは、外周駆動ロールの突刺抵抗の
成分を含めて、殆ど水平方向の分力のみであることから
、原木支持ロールを水平方向に押圧するよう設定したが
、専らスピンドルを介して旋削に要する動力の全部を供
給する。旧来のベニヤレースに適用する場合には、各種
核２
力の合力の向きに対向する斜め方向に押圧するよう設定
するのが適切である。In addition, in the above embodiment, a veneer race having a so-called immediately outer circumferential drive type turning mechanism that supplies most of the power required for turning from the outer circumference of the raw wood immediately before turning is used, The vertical components of the various drag forces are canceled out by the driving force of the outer drive rolls, and in the end, the forces that remain as causes for the deflection of the log are mostly horizontal components, including the component of the piercing resistance of the outer drive rolls. Since only the component force in the direction is applied, the log support roll was set to be pressed in the horizontal direction, but all of the power required for turning is supplied exclusively through the spindle. When applied to conventional veneer lace, it is appropriate to set the pressure in an oblique direction opposite to the direction of the resultant force of the two various nuclear forces.
また、前記実施例に於ては、特に制約がないことから、
原木支持ロールの区画数を明記していないが、細区画化
するほど、原木の部分毎の硬さに正確に対応できる利点
がある反面、設備が複雑化して製造コストが高くなる難
点もあるので、過剰な細区画化は不適であり、因に、実
験では、各原木支持ロールの長さを１尺〜２尺に区画し
て、実用的に十分有効であった。In addition, in the above embodiment, since there are no particular restrictions,
Although the number of sections of the log support roll is not specified, the smaller the section, the more accurately the hardness of each section of the log can be handled, but the disadvantage is that the equipment becomes more complex and the manufacturing cost increases. Excessive subdivision is inappropriate; however, in experiments, the length of each log support roll was divided into 1 to 2 shaku, which was sufficiently effective for practical use.
また、前記実施例に於ては、長さ方向に於て複数に区画
した各原木支持ロールとして、区画の全長に近い長さを
有する一木状のものを備えたが、必要に応じては、長さ
方向に於て複数に区画した各原木支持ロールを、更に複
数に分割し、例えば第４図の実施例の如く、小原木支持
ロール１０ａと小原木支持ロール１０ｂとに分割し、複
式軸受部材１２ａによって遊転可能に保持すると共に、
抑圧装置１５の作動により、一体重に原木２５の外周へ
押圧するよう備えても差支えなく、長さ方向に於ける原
木支持ロールの区画数と分割数とは必ずしも一致してい
なくても差支えない。Further, in the above embodiment, each raw wood support roll divided into a plurality of sections in the length direction was provided with a single tree-like roll having a length close to the entire length of the section. Each log support roll divided into a plurality of sections in the length direction is further divided into a plurality of parts, for example, as in the embodiment shown in FIG. While being freely rotatably held by the bearing member 12a,
There is no problem even if the pressure device 15 is actuated to press against the outer periphery of the log 25 with a single weight, and the number of divisions of the log support roll in the length direction does not necessarily have to match the number of divisions. .
また、前記各実施例に於ては、用いる原木支持ロールの
本数を一木としたが、必要に応じては、二本以上の複数
本として、支持の安定化を図っても差支えなく、その抑
圧形態も、例えば後記第５図或は第６図の実施例の如く
、複数本をほぼ同じ向きから一体的に原木の外周へ押圧
する抑圧形態の外に、図示は省略したが、必要に応じて
は、夫々個別に異る向きから押圧する抑圧形態を採るこ
とも可能である。In addition, in each of the above embodiments, the number of log support rolls used was one log, but if necessary, two or more log support rolls may be used to stabilize the support. In addition to the suppression mode in which multiple pieces are pressed integrally against the outer periphery of the raw wood from approximately the same direction, as in the examples shown in FIGS. Depending on the situation, it is also possible to adopt a suppression mode in which each member is pressed from a different direction.
即ち、第５図に例示した実施例は、各々長さ方向に於て
複数に区画した二本の原木支持ロールの一区画に相当す
る、原木支持ロール２７・２８の夫々に、相互に位置を
相違させた適宜幅の円周方向へ連なる溝２７ａ・２８ａ
を複数条形成して、互違い状に入組ませるよう、複列軸
受部材１２ａによって遊転可能に保持し、押圧装置１５
の作動により、一体重に原木２５の外周へ押圧するよう
構成した例であって、原木支持ロール２７・２８の当接
間隔内で、原木２５の撓みの向きが幾分変動しても、安
定的に支持できる長所を有する。That is, in the embodiment illustrated in FIG. 5, the positions of the log support rolls 27 and 28, each corresponding to one section of two log support rolls divided into a plurality of sections in the length direction, are adjusted relative to each other. Grooves 27a and 28a that are continuous in the circumferential direction and have different widths as appropriate.
A plurality of strips are formed and held freely rotatably by a double row bearing member 12a so as to be inserted in a staggered manner, and a pressing device 15
This is an example in which the log 25 is pressed against the outer periphery of the log 25 with a single weight by the operation of It has advantages that can be supported in terms of
また、第６図に例示した実施例は、原木支持ロールの区
画数と同数の揺動アーム３５を、支点部材３３に伺設し
た支点ピン３４を中心として図示矢印方向へ揺動可能に
備えると共に、各揺動アーム３５に伺設した連結ピン３
２を中心として図示矢印方向へ揺動可能に備えた揺動複
列軸受部材３１によって、各々長さ方向に於て複数に区
画した二本の原木支持ロールの一区画に相当する、原木
支持ロール２９・３０を遊転可能に保持し、面も各揺動
アーム３５に夫々付設した抑圧装置３６の作動により、
一体内に原木２５の外周へ押圧するよう構成した例であ
って、前記揺動アーム３５と押圧装置３６は、所望時に
、各原木支持ロール２９・３０を所定位置へ初期移動さ
せる作用も合せて成すよう制御する。Further, the embodiment illustrated in FIG. 6 includes swing arms 35 of the same number as the number of sections of the log support roll, which are swingable in the direction of the arrow in the figure about a fulcrum pin 34 provided on a fulcrum member 33. , a connecting pin 3 installed on each swing arm 35
A log support roll corresponding to one section of two log support rolls each partitioned into a plurality of sections in the length direction by a swinging double row bearing member 31 that is swingable in the direction of the arrow shown in the figure about 2. 29 and 30 are held freely rotatable, and the surfaces are also operated by a suppression device 36 attached to each swing arm 35, respectively.
This is an example configured to press against the outer periphery of the log 25 in one body, and the swing arm 35 and the pressing device 36 also have the function of initially moving each log support roll 29, 30 to a predetermined position when desired. control so that it can be achieved.
５
斯様な構成によっても、−木の原木支持ロールを用いる
場合に比べて安定的に原木を支持することができ、また
必要に応じて、適当な駆動源を用いて各原木支持ロール
を駆動する場合に於て、連結ピンの位置に駆動系統の回
転中心を定めるよう構成すれば、ベルト・チェーン等の
動力伝達部材が、各原木支持ロールの抑圧作用及び揺動
作用に悪影響を及ぼさないので好便であり、各原木支持
ロールに原木駆動機能を兼備させる場合に好都合な支持
形態である。5 With such a configuration, logs can be supported more stably than in the case of using wooden log support rolls, and if necessary, each log support roll can be driven using an appropriate drive source. In this case, if the center of rotation of the drive system is determined at the position of the connecting pin, the power transmission members such as belts and chains will not have a negative effect on the suppressing action and rocking action of each log support roll. This is a convenient support form when each log support roll has a function of driving logs.
また一方、検知機構としては、欠配実施例の如く、突刺
体の原木外周部への突刺深さを基準として、間接的に原
木の部分毎の硬さを検知する方式が簡便であり、突刺体
の配設間隔の設定によって、検知精度の精粗も容易に変
更できるが、その外、例えば適当な形状の変形部材を用
いて、原木外周部を一時的に塑性変形させると共に、そ
の塑性深さを基準として、間接的に原木の部分毎の硬さ
を検知する方式、或は超音波断層装置等による原木全体
の断層撮影の画像対 ６
理に基く、木材組織の密度等を基準として、間接的に原
木の部分毎の硬さを検知する方式等、要は各原木支持ロ
ールの位置に準ずる原木の部分毎の硬さを検知できる機
構であれば、本発明の検知機構に用いて支障ない。On the other hand, as a detection mechanism, it is simple to use a method that indirectly detects the hardness of each part of the log based on the depth of the piercing body into the outer circumference of the log, as in the missing example. The fineness or roughness of the detection accuracy can be easily changed by setting the spacing between the bodies. A method that indirectly detects the hardness of each part of the log based on the hardness, or a tomography image of the entire log using an ultrasonic tomography device, etc. 6. Based on the density of the wood tissue, etc. In short, any mechanism that can detect the hardness of each part of the log according to the position of each log support roll, such as a method that indirectly detects the hardness of each part of the log, can be used in the detection mechanism of the present invention without any problems. do not have.
更に、その検知時期としても、欠配実施例の如き時期に
限らず、押圧力の調整に時限的に支障のない範囲内で、
時期を遅速させて差支えなく、前記断層撮影の方式によ
る場合は、ベニヤレースで旋削する以前の適当な時期に
、例えば原木の芯出し時期後に、予め検知して、検知信
号を一旦記憶装置に記憶させ、所望時に、記憶した検知
信号を再生して、制御装置に順次伝達する構成を採るこ
とが可能である。Furthermore, the timing of detection is not limited to the timing as in the missing delivery example, but within a range that does not impede the adjustment of the pressing force in terms of time.
If the tomography method is used, the timing may be delayed, but if the tomography method is used, the detection signal is detected in advance at an appropriate time before turning with the veneer lace, for example after the centering of the log, and the detection signal is temporarily stored in the storage device. It is possible to adopt a configuration in which the stored detection signals are reproduced and sequentially transmitted to the control device when desired.
勿論、本発明を適用できるベニヤレースの形式としても
、欠配実施例の如き形式に限らず、従来公知の他の形式
にも適用可能である。Of course, the type of veneer lace to which the present invention can be applied is not limited to the type with missing laces, but can also be applied to other conventionally known types.
以上明らかな如く、本発明は、長さ方向に於て複数に区
画した各原木支持ロールの位置に準ずる原木の部分毎の
硬さを検知する検知機構からの検知信号に基き、刃口部
を通過する原木の部分毎の硬さに対応させて、原木支持
ロールの各区画毎に押圧力を順次調整する故に、原木の
支持力に過不足が生じ難く、たとえ原木に局部的な硬さ
の違いがあっても、格別支障なく良好に原木を支持する
ことができ、撓みが少ない原木の旋削が可能となるので
有益である。As is clear from the above, the present invention detects the cutting edge portion based on the detection signal from the detection mechanism that detects the hardness of each part of the log corresponding to the position of each log support roll divided into a plurality of sections in the length direction. Since the pressing force is sequentially adjusted for each section of the log support roll in accordance with the hardness of each part of the log passing through, it is difficult for the support force of the log to be over or under, and even if the log has a local hardness. Even if there is a difference, it is advantageous because the log can be supported well without any particular trouble, and the log can be turned with less bending.
図面は本発明を説明する為のものであって、第１図は本
発明の実施に用いるベニヤレースの側面説明図、第２図
は支持機構の部分平面説明図、第３図は検知機構の部分
正面説明図、第４図は支持機構の他の実施例の部分平面
説明図、第５図及び第６図は支持機構の他の実施例の部
分側面説明図である。
Ａ・・・旋削機構、Ｂ＠ ｍ−支持機構、Ｃ・Φ番検知
機構、１・拳−鉛白、２・・・プレッシャパー台、３・
−・進退装置、４・・・外周駆動ロール、６・１１番ス
ピンドル、８・・φ支持フレーム、９・φ・移動装置、
１０ 、２７ 。The drawings are for explaining the present invention, and FIG. 1 is a side view of the veneer lace used to carry out the present invention, FIG. 2 is a partial plan view of the support mechanism, and FIG. 3 is a diagram of the detection mechanism. FIG. 4 is a partial plan view of another embodiment of the support mechanism, and FIGS. 5 and 6 are partial side views of other embodiments of the support mechanism. A... Turning mechanism, B@ m-support mechanism, C. Φ number detection mechanism, 1. Fist - lead white, 2... Pressure par stand, 3.
-Advancing/retracting device, 4...Outer periphery drive roll, 6/11 spindle, 8...φ support frame, 9...φ moving device,
10, 27.
Claims (1)
長さ方向に於て複数に区画して、各区画毎に押圧力を調
整可能に備えると共に、該原木支持ロールの各区画の位
置に準ずる原木の部分毎の硬さを検知機構によって順次
検知し、該検知機構からの検知信号に基き、刃口部を通
過する原木の部分毎の硬さに対応させて、前記原木支持
ロールの各区画毎に押圧力を順次調整することを特徴と
するベニヤレースの原木支持ロールの押圧方法。A log support roll having a length approximately equal to the total length of the log is divided into a plurality of sections in the length direction, and the pressing force is adjustable for each section, and the position of each section of the log support roll is The hardness of each part of the raw wood is sequentially detected by a detection mechanism, and based on the detection signal from the detection mechanism, each part of the raw wood support roll is A method for pressing a log support roll for veneer lace, which is characterized by sequentially adjusting the pressing force for each section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4851690A JP2805167B2 (en) | 1990-02-28 | 1990-02-28 | Pressing method of log supporting roll of veneer lace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4851690A JP2805167B2 (en) | 1990-02-28 | 1990-02-28 | Pressing method of log supporting roll of veneer lace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03248801A true JPH03248801A (en) | 1991-11-06 |
| JP2805167B2 JP2805167B2 (en) | 1998-09-30 |
Family
ID=12805532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4851690A Expired - Fee Related JP2805167B2 (en) | 1990-02-28 | 1990-02-28 | Pressing method of log supporting roll of veneer lace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2805167B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011126265A (en) * | 2009-11-19 | 2011-06-30 | Meinan Mach Works Inc | Method of cutting wood block and veneer lathe |
| CN104802265A (en) * | 2015-05-22 | 2015-07-29 | 许思光 | Single-plate unmanned operation rotary cutter |
-
1990
- 1990-02-28 JP JP4851690A patent/JP2805167B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011126265A (en) * | 2009-11-19 | 2011-06-30 | Meinan Mach Works Inc | Method of cutting wood block and veneer lathe |
| CN104802265A (en) * | 2015-05-22 | 2015-07-29 | 许思光 | Single-plate unmanned operation rotary cutter |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2805167B2 (en) | 1998-09-30 |
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