WO2005065903A1 - Procede pour ameliorer le fonctionnement d'un ensemble de cylindres d'ecorçage, ainsi que rouleau de prelevement devant etre inclus dans un ensemble de cylindres d'ecorçage - Google Patents

Procede pour ameliorer le fonctionnement d'un ensemble de cylindres d'ecorçage, ainsi que rouleau de prelevement devant etre inclus dans un ensemble de cylindres d'ecorçage Download PDF

Info

Publication number
WO2005065903A1
WO2005065903A1 PCT/FI2005/050002 FI2005050002W WO2005065903A1 WO 2005065903 A1 WO2005065903 A1 WO 2005065903A1 FI 2005050002 W FI2005050002 W FI 2005050002W WO 2005065903 A1 WO2005065903 A1 WO 2005065903A1
Authority
WO
WIPO (PCT)
Prior art keywords
roller assembly
roll
trees
pick
debarking
Prior art date
Application number
PCT/FI2005/050002
Other languages
English (en)
Inventor
Pentti Huhta
Keijo Ventola
Original Assignee
Andritz Oy
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Andritz Oy filed Critical Andritz Oy
Priority to BRPI0506711-1A priority Critical patent/BRPI0506711B1/pt
Priority to AU2005203897A priority patent/AU2005203897B2/en
Publication of WO2005065903A1 publication Critical patent/WO2005065903A1/fr
Priority to SE0501966A priority patent/SE529958C2/sv

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L1/00—Debarking or removing vestiges of branches from trees or logs; Machines therefor
    • B27L1/02—Debarking or removing vestiges of branches from trees or logs; Machines therefor by rubbing the trunks against each other; Equipment for wet practice
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L1/00—Debarking or removing vestiges of branches from trees or logs; Machines therefor
    • B27L1/10—Debarking or removing vestiges of branches from trees or logs; Machines therefor using rotatable tools

Definitions

  • the invention relates to a method according to the preamble of claim 1 for enhancing operation of a debarking roller assembly.
  • the invention relates additionally to a pick-up roll according to the preamble of claim 2 to be included in a debarking roller assembly for enhancing operation of the roller assembly.
  • bark balls refer in this context to a heap consisting of more or less intertwined barks and possibly containing also pieces of wood, slivers or the like
  • Partial debarking can be performed by means of a special purpose-built roller assembly.
  • the Applicant's earlier Finnish patent application 103717 discloses an apparatus suitable for removing various barks, especially long barks and bark balls, from a wood- and bark-containing flow of timber, said apparatus being at the same time capable of preventing unnecessary removal of wood material along with barks.
  • the discussed apparatus comprises at least one shaking roller as part of a timber-flow carrying conveyor, and a number of rotatable rollers disposed downstream thereof, below a plane of movement defined by said conveyor, transversely to the traveling direction of the flow of timber, for providing a recessed section in the conveyor.
  • the shaking roller applies a vibration action to the timber, the barks and bark balls entangled within the timber falling either directly between the rollers and thence further onto a lower-level conveyor or the like or ending up in the recessed section included in the inventive apparatus and thence through between the rollers as a result of the relative movement thereof onto a bark conveyor or the like.
  • Such a shaking roller delivering vertical impacts from below to trees presently in the process, has proved efficient in most cases intended for dropping the barks from top of the trees onto a roller assembly and further therethrough onto a bark conveyor.
  • a roller assembly it is not possible to remove all barks by means of such a roller assembly as some of the barks are at least partially entangled around the trees and wedged between the trees or between the trees and the roller assembly, the roller assembly not being able to pull such barks through itself onto a bark conveyor below.
  • the lifting motion included in the method refers to an action of lifting a tree in such a way that, at a pick-up point, the tree shall momentarily reach the height of 100- 500 mm above the conveying level.
  • the method differs essentially from prior art shaking or vibration, in which a tree is raised in practice by no more than a few centimeters.
  • a combined lifting motion, lateral movement and roiling action in a method of the invention is preferably effected by a pick-up roll of the invention.
  • the lifting motion is performed by means of the increasing height section of a lifting blade, which simultaneously rolls the tree around.
  • the lateral movement is effected by means of a helical line produced by the top surface of the lifting blade's increasing height section as the pick-up roll rotates.
  • the lifting motion is implemented not only by means of a forced motion produced by the increasing height section of a lifting blade but also by means of an ejection motion produced by the rotation of a lifting blade.
  • the lifting blade is made adjustable in terms of its rotation speed for readily controlling the ejection motion in terms of its force. Consequently, the presently treated timber and barks are momentarily as disengaged as possible from each other, the debarking roller assembly being capable of delivering the barks as easily and efficiently as possible onto a conveyor set below the roller assembly.
  • the rolling action occurring around the longitudinal axis of a tree is most effectively produced in such a way that the increasing height section of a lifting blade's top surface is configured at least for the most part as an Archimedean spiral.
  • the rolling action contributes effectively to the falling of barks from top of the trees.
  • the lifting blades located in the mid-section of a pick-up roll have the handedness of their helical lines selected preferably in view of having the lifting blades convey trees from the pick-up roll's mid-section towards the pick-up roll's ends.
  • the lifting blades located at the ends of a pick-up roll have the handedness of their helical lines selected preferably in view of having the lifting blades convey trees from the pick-up roll's ends towards the pick-up roll's mid- section.
  • the relative distance between adjacent trees can be momentarily increased for allowing the barks to readily fall onto a roller assembly.
  • the distance between two successive pick-up rolls is preferably greater than the average length of presently handled trees. This reduces stresses applied to the pickup rolls, as it therefore unlikely that timber should ever fall with its entire weight against a single pick-up roll but, instead, the weight-inflicted load shall be distributed at least between the pick-up roll and a given roller in the roller assembly.
  • the debarking roller assembly is preferably provided with a return motion. By virtue of this, trees can be worked on the roller assembly back and forth for removing even the most troublesome barks.
  • the debarking roller assembly has its width selected preferably in view of providing enough space for currently handled trees to advance essentially in a single tier. This facilitates measures to provide openings between trees for barks to fall therethrough onto a roller assembly.
  • Fig. 1 shows a pick-up roll of the invention.
  • Fig. 2 shows schematically in a plan view a debarking roller assembly provided with pick-up rolls of the invention.
  • Fig. 3 shows a section along a line III-III in fig. 2.
  • Figs. 2 and 3 show a debarking roller assembly designated generally by reference numeral 1, and fig. 1 shows a pick-up roll designated by reference numeral 6 for enhancing operation of such a debarking roller assembly 1.
  • What is explicitly essential in terms of the invention is that a per se known type of debarking roller assembly has been provided with one or more pick-up rolls shown in fig. 1.
  • the debarking roller assembly 1 is intended for removing barks 2 from a flow of timber proceeding therealong in the direction of an arrow A transversely to the roller assembly's rollers 3 and containing trees 5 and bark 2 stripped off the trees. Said flow of timber proceeds carried by the rollers 3 in a channel whose floor is constituted by said rollers.
  • Each roller 3 is bearing-mounted for rotation around a rotation axis 4 and provided with drive means (not shown).
  • the rollers 3 have a relative distance in the roller assembly's advancing direction (direction of the arrow A) selected in view of allowing the barks 2 to fall through between the rollers.
  • the roller assembly may include various types of rollers (not shown) for encouraging the barks 2 to wind up between the rollers and, thus, the barks to fall onto a conveyor below (not shown).
  • the presently discussed debarking roller assembly 1, which thus includes at least one pick-up roll 6, is intended particularly for the handling of difficult barks 2. These include, for example, barks of some eucalyptus trees coming off in long strips. A problem here is that the barks 2 are at least partially entangled around the trees 5 and wedged between trees or between trees and the roller assembly. In this case, a conventional debarking roller assembly is not always capable of directing and pulling barks through between the roller assembly's rollers onto a conveyor below.
  • the trees 5 are subjected at least in one spot of the debarking roller assembly 1 to a combined lifting motion, lateral movement, and a rolling action effected around the longitudinal axis of trees 5 for disengaging the trees, presently in said at least one spot, at least temporarily and at least partially away from the debarking roller assembly 1 and other trees 5 presently at the roller assembly.
  • the pick-up roll 6 is provided with its own drive means for rotating the pick-up roll in the direction of an arrow C. In other words, the pick-up roll 6 can be controlled in operation regardless of the rollers' 3 rotation speed.
  • the pick-up roll 6 comprises a rotatable core member 7, having its jacket surface provided with at least one lifting blade 8.
  • the lifting blade 8 has its top surface 9 configured as a helical line and provided with an increasing height section 10 and a decreasing height section 11 (fig. 3).
  • the increasing height section 10 is adapted to commence from the debarking roller assembly's 1 conveying level 12 or from therebelow and the decreasing height section 11 is adapted to extend to the debarking roller assembly's conveying level or therebelow.
  • the pick-up roll 6 is fitted in the debarking roller assembly 1 as a sort of replacement for one of the rollers 3.
  • the core member 7 has its highest point not higher than coplanar with the conveying level 12 established by the rollers 3.
  • a tree 5 is adapted to be lifted by the action of the lifting blade 8 to the height of 100-500 mm above the conveying level 12. This can be effected by means of a forced motion produced by the increasing height section 10 of the lifting blade 8. In terms of operation of the debarking roller assembly 1, however, it is more preferred to implement this by means of a combination of forced motion produced by the increasing height section 10 of the lifting blade 8 the and ejection motion .produced by rotation of the lifting blade 8.
  • the pick-up roll 6 is adapted to be adjustable regarding its rotation speed.
  • the increasing height section 10 of the lifting blade's 8 top surface 9 is configured at least for the most part as an Archimedean spiral for providing a tree effectively with a concurrent rolling and ejection action.
  • the Archimedean spiral is a curve produced by a spot moving at a consistent speed along a radius rotating at a constant speed.
  • the lifting blades 8 present in the mid-section of the pick-up roll 6 have the helical lines thereof selected for such a handedness that, as the pick-up roll 6 is rotating, trees 5 become conveyed by the lifting blades 8 from the pick-up roll's 6 mid- section towards its ends.
  • the lifting blades 8 present at the ends of the pick-up roll 6 have the helical lines thereof selected for such a handedness that, as the pick-up roll 6 is rotating, trees 5 become conveyed by the lifting blades 8 from the pick-up roll's 6 ends towards the pick-up roll's mid-section.
  • the distance between two successive pick-up rolls 6 is greater than the average length of presently handled trees 5.
  • the debarking roller assembly 1 is provided with a return motion, in other words the rollers 3 can be rotated both in the direction of an arrow D for an actual feeding motion and in the reversed direction, the roller assembly being capable of working the trees back and forth until the removal of barks is complete.
  • the debarking roller assembly 1 has its width B selected such that presently handled trees 5 have enough space to advance in a single tier.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)
  • Catching Or Destruction (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Road Paving Structures (AREA)

Abstract

Cette invention se rapporte à un procédé servant à améliorer le fonctionnement d'un ensemble de cylindres d'écorçage (1), ainsi qu'à un rouleau de prélèvement (6) destiné à être inclus dans cet ensemble de cylindres d'écorçage (1) pour améliorer le fonctionnement de cet ensemble, lequel est conçu pour enlever l'écorce (2) d'un flot de rondins de bois progressant le long de l'ensemble transversalement aux cylindres (3) de l'ensemble et contenant des rondins (5) et de l'écorce (2) enlevée des rondins, les écorces (2) étant au moins partiellement entremêlées autour des rondins (5) et prises entre les rondins ou entre les rondins et l'ensemble des cylindres. Dans ce procédé, au moins en un point de l'ensemble de cylindres d'écorçage (1), les rondins (5) sont soumis à une combinaison de mouvement de levage, de mouvement latéral et de mouvement de roulement autour de l'axe longitudinal d'un rondin (5), pour dégager les rondins, à ce moment au moins dans cette position, au moins momentanément et au moins partiellement hors de l'ensemble de cylindres d'écorçage (1) et loin des autres rondins (5) se trouvant à ce moment au niveau de l'ensemble de cylindres.
PCT/FI2005/050002 2004-01-07 2005-01-04 Procede pour ameliorer le fonctionnement d'un ensemble de cylindres d'ecorçage, ainsi que rouleau de prelevement devant etre inclus dans un ensemble de cylindres d'ecorçage WO2005065903A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BRPI0506711-1A BRPI0506711B1 (pt) 2004-01-07 2005-01-04 Método para intensificar a operação de um conjunto de cilindros descascadores e cilindro de captação para ser incluído nesse conjunto
AU2005203897A AU2005203897B2 (en) 2004-01-07 2005-01-04 Method for enhancing operation of a debarking roller assembly, as well as pick-up roll to be included in a debarking roller assembly
SE0501966A SE529958C2 (sv) 2004-01-07 2005-09-06 Metod för att förbättra driften av en avbarkningsvalsanordning, samt en avtagningsvals innefattad i en avbarkningsvalsanordning

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20045002A FI122577B (fi) 2004-01-07 2004-01-07 Nostotela liitettäväksi kuorenerotusrullastoon
FI20045002 2004-01-07

Publications (1)

Publication Number Publication Date
WO2005065903A1 true WO2005065903A1 (fr) 2005-07-21

Family

ID=30129475

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2005/050002 WO2005065903A1 (fr) 2004-01-07 2005-01-04 Procede pour ameliorer le fonctionnement d'un ensemble de cylindres d'ecorçage, ainsi que rouleau de prelevement devant etre inclus dans un ensemble de cylindres d'ecorçage

Country Status (11)

Country Link
CN (1) CN100398279C (fr)
AR (1) AR048142A1 (fr)
AU (1) AU2005203897B2 (fr)
BR (1) BRPI0506711B1 (fr)
ES (1) ES2298086B2 (fr)
FI (1) FI122577B (fr)
MY (1) MY146306A (fr)
PT (1) PT2005065903W (fr)
SE (1) SE529958C2 (fr)
WO (1) WO2005065903A1 (fr)
ZA (1) ZA200605508B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104908134A (zh) * 2015-06-25 2015-09-16 吉首大学 齿筒直桨式桑枝去皮装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107718214A (zh) * 2017-09-20 2018-02-23 重庆市健隆家具有限公司 一种树木剥皮机
CN113183265B (zh) * 2021-05-18 2023-11-03 徐州启峰智能科技有限公司 一种绿化管理装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4582106A (en) * 1983-12-30 1986-04-15 Kone Oy Apparatus for separation of bark from timber
WO1998025743A1 (fr) * 1996-12-10 1998-06-18 Andritz-Patentverwaltungs-Gmbh Appareil pour enlever les ecorces d'un flux de grumes contenant des grumes ou des ecorces
WO1999038662A1 (fr) * 1998-01-29 1999-08-05 Andritz-Patentverwaltungs-Gmbh Dispositif d'enlevement de l'ecorce d'un lot brut contenant du bois et des ecorces
US20020060135A1 (en) * 2000-11-09 2002-05-23 Bruno Lindenblatt Spiral singulator
WO2003016007A1 (fr) * 2001-08-20 2003-02-27 Metso Paper, Inc. Procede et appareil permettant d'enlever des ecorces detachees, et billes
WO2003106125A1 (fr) * 2002-06-12 2003-12-24 Metso Paper, Inc. Procede d'ecorçage dans un tambour et separation de l'ecorce d'un flux de grumes

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87216158U (zh) * 1987-12-05 1988-08-10 黑龙江省林业设计研究院 原木剥皮机
CN2081789U (zh) * 1991-01-09 1991-07-31 刘元福 手提式振动剥皮机
US5630453A (en) * 1996-05-24 1997-05-20 Fuji Kogyo Co., Ltd. Debarking machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4582106A (en) * 1983-12-30 1986-04-15 Kone Oy Apparatus for separation of bark from timber
WO1998025743A1 (fr) * 1996-12-10 1998-06-18 Andritz-Patentverwaltungs-Gmbh Appareil pour enlever les ecorces d'un flux de grumes contenant des grumes ou des ecorces
WO1999038662A1 (fr) * 1998-01-29 1999-08-05 Andritz-Patentverwaltungs-Gmbh Dispositif d'enlevement de l'ecorce d'un lot brut contenant du bois et des ecorces
US20020060135A1 (en) * 2000-11-09 2002-05-23 Bruno Lindenblatt Spiral singulator
WO2003016007A1 (fr) * 2001-08-20 2003-02-27 Metso Paper, Inc. Procede et appareil permettant d'enlever des ecorces detachees, et billes
WO2003106125A1 (fr) * 2002-06-12 2003-12-24 Metso Paper, Inc. Procede d'ecorçage dans un tambour et separation de l'ecorce d'un flux de grumes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104908134A (zh) * 2015-06-25 2015-09-16 吉首大学 齿筒直桨式桑枝去皮装置

Also Published As

Publication number Publication date
SE0501966L (sv) 2005-10-28
AU2005203897A1 (en) 2005-07-21
ZA200605508B (en) 2007-03-28
ES2298086A1 (es) 2008-05-01
AR048142A1 (es) 2006-04-05
CN100398279C (zh) 2008-07-02
FI20045002A (fi) 2005-07-08
FI20045002A0 (fi) 2004-01-07
ES2298086B2 (es) 2008-10-16
BRPI0506711A (pt) 2007-05-15
MY146306A (en) 2012-07-31
CN1910023A (zh) 2007-02-07
PT2005065903W (pt) 2007-02-28
FI122577B (fi) 2012-03-30
SE529958C2 (sv) 2008-01-15
BRPI0506711B1 (pt) 2018-05-29
AU2005203897B2 (en) 2008-03-06

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