CN1608815A - Method for the manufacture of long chips or long shavings with defined dimensions - Google Patents

Method for the manufacture of long chips or long shavings with defined dimensions Download PDF

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Publication number
CN1608815A
CN1608815A CNA2004100882906A CN200410088290A CN1608815A CN 1608815 A CN1608815 A CN 1608815A CN A2004100882906 A CNA2004100882906 A CN A2004100882906A CN 200410088290 A CN200410088290 A CN 200410088290A CN 1608815 A CN1608815 A CN 1608815A
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CN
China
Prior art keywords
cutting blade
long cutting
glued board
long
width
Prior art date
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Pending
Application number
CNA2004100882906A
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Chinese (zh)
Inventor
G·美尔策
G·V·哈斯
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Dieffenbacher GmbH and Co KG
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Dieffenbacher GmbH and Co KG
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Publication of CN1608815A publication Critical patent/CN1608815A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27LREMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L11/00Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/02Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood shavings or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27LREMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L5/00Manufacture of veneer ; Preparatory processing therefor
    • B27L5/02Cutting strips from a rotating trunk or piece; Veneer lathes

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Wood Veneers (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)

Abstract

Production of long chippings or shreddings from wood with exactly defined dimensions comprises stripping or cutting a sheet of veneer with exact thickness from a round timber or a tree trunk. The sheet of veneer is cut perpendicular to the fiber direction using an axe or a similar device to form strips of exact length. The strips are separated to an exact width using a flake splitter or a similar device.

Description

Manufacturing has the method for the long cutting blade of definite size
Technical field
The present invention relates to a kind of long smear metal or long cutting blade (Langschnitzeln) method (OSB) that has certain size with the timber manufacturing.
Background technology
Long cutting blade has the thickness of 0.4mm to 2mm, the width of 5mm to 100mm and the length of 50mm to 300mm usually.The method that the gummed band wood that is formed by the wood gluing of the thickness of the length more than the 1200mm, 100 to 2400mm width and 2-5mm scope adopts general glued board to make is made according to the large scale of gummed lath.This relates to drying, screening, gummed and distribution (Streuung) especially.For example, do not adopt cylindrical drier and the rotary gummed machine of in OSB produces, quoting usually.
The variety of way that the manufacturing of long cutting blade is adopted at present usually is:
A) by means of machining, longitudinally before push away by a cylinder blade and round log (Rundholz), by the long cutting blade of a round log manufacturing,
B) longitudinally before push away by a round log cut growth cutting blade by means of static blade and round log,
C) make plate by means of a cylinder blade or an annular blade cutter by round log, smear metal machining sheet again,
D) by means of annular blade or disc cutter by the long cutting blade of round log manufacturing.
A) by means of a cylinder blade by the long cutting blade of round log manufacturing:
From DE 195 04 030, can recognize a kind of method, utilize this method in an operation, to make the lumps of wood and other long cutting blade from round log.In this operation, be processed into long cutting blade by means of cylinder blade smear metal in the outermost extent of round log of a rotation.This round log is longitudinally before shifted onto on the cylinder blade in this process.This method can not achieve the goal, because the lumps of wood of being produced (Kantholtz) size can not guarantee, and the thickness and the change in size of the long cutting blade of producing are very big.Its reason is that round log can not accurately be fixed in the smear metal process, and this just causes size fluctuation.
B) directly by the long cutting blade of round log cutting:
According to the method for EP 0 914 913 A2, in an operation, round log stretches along an actionless blade, wherein, makes the lumps of wood and long cutting blade in an operation.The problem of this method is the wear life of blade, introduces round log and implement the replacing of blade exactly.The gauge fluctuation of long cutting blade is bigger.This method can not be incorporated in the industrial practice.
C) make plate by round log, process the growth cutting blade by the plate smear metal:
For from certain long cutting blade of sheet material manufacturing, in the method, the growth cutting blade is processed in the sheet material smear metal with endless knife, major axis formula disc cutter (Messerring-, Messerwellen-und Scheibenzerspanern).As the example of this method, visible DE 197 27 127 C1.When long cutting blade not in smear metal processing and operation subsequently when machine direction is cut each other indefinitely, then have a constant width according to the long cutting blade of this method.This uncertain coniferous tree that appears at especially such as pine tree of cutting each other.Produce the long cutting blade of constant width such as the broad leaf tree of willow.However, the thickness of long cutting blade so still has very big dispersiveness, because different with the gummed manufacturing, can not introduce sheet material in entirely accurate ground in the smear metal process, even different with the smear metal processing of round log, the fixing and continuous feed of palette can slightly improve.Shortcoming is that also the operation of plate is complicated, and a large amount of sawdust occur, and the sale proceeds that obtains is also very low.
D) from round log, make long cutting blade with annular blade or disc cutter (Messerring-oder Scheibenzerspanern):
The method of traditional long cutting blade of manufacturing is to come smear metal processing round log with annular blade, major axis formula disc cutter.In the cutting processing process, in order to reach the long cutting blade of unified thickness, have great importance in the introducing of this round log.The width of long cutting blade is not directly confirmable.Reach the uniform incision of long cutting blade by so-called phase blade (Gegenmesser), it has certain limit.The manufacturing of the long cutting blade of this method, the meticulous product of appearance reach 40%, in general, must pass through so meticulous product by this process.Just can be referred to as meticulous product by material less than the width of the screening machine of 6mm.
In view of the constancy of the thickness and the width of long cutting blade, all above-mentioned four kinds of methods all have shortcoming.The variation coefficient of thickness is mostly more than 20%, width in addition surpass 50%.The plate that the long cutting blade of being made by said method forms, the dispersiveness of its long cutting blade thickness is bigger, and the surface of plate has many holes, and has rejected region (porous spot and shrinkage cavity position) at the plate mid portion.In addition, the surface of porous also produces in this wise,, is furnished with a very thin long cutting blade in a very thick long cutting blade that is, and wherein, the long cutting blade that approaches stretches out from thick side along side direction, so formed a breach.Without other method, just can not pass through those holes with the paper coating of the impregnating resin of less weight per unit area.
In addition, also be very impossible by means of above-mentioned four kinds of method productions less than the long cutting blade of the constant thickness of 0.5mm, because in the smear metal process, can not accurately introduce timber, do not have as pressing plate that gummed adopts in making yet.Long cutting blade major part is cut indefinitely by width, and has very different thickness.The long cutting blade of thickness below 0.5mm just produced very, and the plate of smooth surface just needs.
Especially under the thin OSB plate situation below the thickness 6mm, the long cutting blade thickness of fluctuation causes the big distribution of weight per unit area of the OSB pad of distribution.The distribution of pad is achieved by means of the weighing of volume surely (quasivolumetrischen Dosierung), like this, as seen scatters into the long cutting blade of about equal number according to short interval.When one or more blocked up long cutting blades scatter, form local high weight per unit area.This causes local High Voltage in hot pressing, make the plate characteristic produce big change, and make plate surface undulation injustice.
The long cutting blade that is not the obviously width of distribution makes directed better the distribution, because dispersion machine can be implemented the distribution of width best.Fill up uniformly so allow to produce width, the longitudinal axis of its long cutting blade has and is 10 ° attitude drift to the maximum.By the preferable orientation of long cutting blade, can especially improve horizontal resistance to pressure, swell value and flexural property, particularly along the modulus of elasticity in static bending E of orientation direction.The long cutting blade that accurately limits width also causes the elastic modulus E of plate higher.Therefore, be incorporated in the plate, for example, particularly advantageously introduce the cover layer of the long cutting blade of the OSB that is used as beam or plate with necessary high elastic modulus E.These are existing deeply description in DE 100 37 508A1.
According to US 3,164,511 the 5th kind of method described in the literary composition by gummed and made long cutting blade, and it cuts glued board with single blade parallel (cutting (clippen)) in wood-fibred.Thus, limit the width of long cutting blade, learn also that in addition long cutting blade has uniform width.Description is not given in cutting about the length aspect.Yet this method does not have in industrial quarters by wide-scale adoption, because for an OSB manufacturing equipment, the quantity of producible long cutting blade very little.Under the peeling rate of current 200m/min, spacing is the exploitation (Clippen) of 15mm can reach 250 steps of each second in continuous process cycle.
Described in CAN2126456 by the cutting or the incision of glued board and make glued board from a sheet material, wherein, the length of plate is corresponding to the length of strand.The width of strand should be adjusted to the clip that surpasses gummed lath (Furnierstreifen) or surpass the phase blade.In shearing, introduce a pressing plate.And produce the size of determining with the method for strand, but the amount that is produced according to the timber operation of complexity very little.Equally, the cost of strand is very high, because at first must produce plate.
Summary of the invention
Task of the present invention is to provide the method that a kind of OSB of being used to manufactures the economy of long cutting blade, utilize the size that this method can be less to scatter the long cutting blade of manufacturing, it preferably is applied to have among the OSB of smooth surface, have the OSB of high elastic modulus E, and be applied to the plate of thickness below 6mm and the manufacturing of beam.
The solution of this task is, according to claim 1, make long cutting blade or have with the timber manufacturing in the method for long cutting blade of exactly determined size one, separate or cut out glued board breadth (Furnierbahn) with a round log or a tree bar with precise thickness, with a chopper or similarly machine perpendicular to the direction of fiber the veneered plywood breadth is divided into the band with precise length, and band is divided into accurate width with a slicer or similar machine.
Therefore, the manufacturing of glued board utilizes conventional veneer boards to make employed stripping machine or cutting machine is realized, thus, uses a press strip and accurately guides timber and cutting.In general, round log length is 1 meter, and the longest is 4 meters.
Can make the glued board of the constant thickness of scope in 0.3 to 2mm by means of said method.In the stripping process of trunk, so-called waste material glued board at first appears, and its length and has diverse width only under 20cm, then, so-called peel ply occurs, and its length is bigger, and maximum reaches half of trunk girth, and has different width.After this, peelable next the annular glued board of ability is not as long as trunk has crackle.If trunk has the crackle that extends towards center position all the time from the outside, then produce so-called plywood parquet (Furnierabschnitt).This glued board breadth has the wide cut (therefore, along the lumber fibre direction) that is about round log length.But they can be narrower in the situation of peel ply or waste material glued board (Abfallfumieren).
The glued board of Sheng Chaning must be separated into the width of rive (Hacker) with cutting machine in the situation of long annular breadth like this.Then, plywood parquet cuts into the lath of the precise length of 30mm to 300mm in the direction of a wide as far as possible cutting machine upper edge fiber.At that time, plywood parquet is transported and is guided into cutting machine along machine direction.Like this, form the lath of precise length and thickness.Then, this accurate width carries out the school accent in one so-called cutting machine.This machine is made up of 2 rotating shafts, and crushing machine is installed on the axle.Glued board is put into from above, and wherein, machine direction is placed to and is parallel to axle, and is transported to static crushing machine from the crushing machine of rotation.Glued board is implemented in being segmented between two crushing machines on the width.Its result can produce the long accurately cutting blade of the thickness with definite length and width.In addition, according to the application that glued board is made, also may make thickness is the thin long cutting blade of 0.5mm.
The other method of long cutting blade manufacturing is to have along machine direction (strand length direction) production of the narrow glued board of measured length really, short glued board breadth is cut into the strand width in the circle of trunk with peeling off (Rundschalen) and batch mode thereafter.The length along machine direction of glued board breadth is carried out the school accent by scraping icking tool or other cutting tool.Just before peeling off, scrape icking tool and be against on the press strip, and scrape to carve and be deep on the round log.According to being the requirement of making a glued board or making tape, can will scrape icking tool or other cutter by last glued board breadth or away from the glued board breadth.If can make a wide annular glued board breadth with requiring, thereby need not scrape the icking tool sheet.By means of this method, the common band that is applicable as high value as the stripping film or the glued board cutting blade of waste material appearance.From normal glued board, transport individually along the glued board breadth that machine direction is short, and cut (transverse to machine direction) division on width with complete.Complete clipper has the width of about round log, its width be about 2 second 6m cycle (peeling rate 200m/min).Blade is placed on complete distance of cutting corresponding to the glued board width.
The method according to this invention especially preferably is used for broad leaf tree, because in common OSB endless knife cutting machine, is difficult to the broad-leaved trunk is cut into the lengthy motion picture of same widths and thickness.Also have economically a reason to be, do not have sawdust to occur, and the residue pole of peeling off can be cut into and be used for the wood chip of riving that papermaking or MDF make, perhaps, cut into the intermediate layer that lengthy motion picture is used for the OSB plate with the endless knife cutting machine.
In addition, the glued board of those very low values that can not be used again in the glued board manufacturing, waste material glued board, stripping film glued board and plywood parquet can be come into operation.The method according to this invention can make up with common glued board manufacturing.The annular continuous glued board that produces can carry out traditional processing unceasingly, and the glued board of low value is convertible into the band of high value.
The advantage of the method according to this invention is especially:
In stripping process and cutting, the thickness of glued board can accurately be adjusted, because round log is accurately fixed when cutting, has used a press strip, and round log can be accurately controlled for the pressure of press strip,
Can make thin long fragment (Langspan), they at first can be applicable to the OSB that approaches and have the OSB of plane surface.Both also can be used as glued board substitute (Sperrholzersatz).
The long fragment that has same size on thickness and the width can be applicable to the long cutting blade of three-dimensional of OSB veneer, or is used for the thin OSB of 2mm to 6mm thickness in the beam manufacturing.Long cutting blade also can scatter by means of vacuum, and the breadth that thin OSB is two-layer separately.Economy is especially, and with the composite timber board that long cutting blade is made, wherein, according to the present invention, composite timber board is made up of the upper and lower veneer of the long cutting blade of three-dimensional, and its weight is 30-250g/m 2, and form by one or more layers of traditional long cutting blade.This plate has a very flat surface, can directly use a 80g/m 2Or less than thin melamine paper coating.The thickness that the long cutting blade of the three-dimensional of this plate preferably has the 0.35-0.45mm scope.
In slicer, the air that rotatablely moves is also drawn downwards from top sucking-off.Therefore, if the air of sucking-off is heated, then this machine also can be used to carry out drying.
In having the large-scale glued board processing factory of many stripping machines and cutting machine, waste material glued board, overburden and plywood parquet usually concentrate on the conveyer belt and are transported to burning place and burn.According to the present invention, these plywood parquets can similarly carry out the length school in splitting broken machine (Hacker) transfers, and then, is directed to slicer.Wherein, also can collect plywood parquet, be processed into lengthy motion picture according to the present invention from a plurality of glued board processing factory.Before lengthy motion picture was made, glued board also can carry out drying in air.To this, glued board is stacking in this wise: almost every block of plate can be flow through by air.But by air drying energy savings.

Claims (10)

1. make long cutting blade or with the method for the exactly determined long cutting blade of timber manufacturing dimension for one kind, wherein,
Separate or cut out glued board breadth with a round log or a tree bar with precise thickness; And
With a chopper or similarly machine and band is divided into accurate width along the glued board breadth being divided into the band of precise length with a slicer or similar machine perpendicular to the direction of fiber.
2. a method of making lengthy motion picture in round log is peeled off is characterized in that,
In stripping process or directly after peeling off, the glued board breadth is divided into plywood parquet, and
Cut by a cover, glued board is cut apart on width.
3. as claim 1 and 2 described methods, it is characterized in that the glued board breadth is cut apart or drying is carried out before or after transferring in the width school in air in length, makes its water content be lower than 30%.
4. the method for claim 1 is characterized in that, long cutting blade is in an electric thermal desiccator or drum dryer, and back drying is handled 1% to 8% water content.
5. as the described method of claim 1 to 4, it is characterized in that long cutting blade sieves, gluing, the directed distribution and hot pressing.
6. as any one described method in the claim 1 to 5, it is characterized in that the guiding hot-air is by slicer, wherein, long cutting blade obtains drying simultaneously.
7. as any one described method in the claim 1 to 6, it is characterized in that the length of the long cutting blade of manufacturing is 100mm to 200mm, width is 15mm to 20mm, and thickness is 0.5mm to 1.1mm.
8. as any one described method in the claim 1 to 7, it is characterized in that the long cutting blade of three-dimensional that is used for veneer obtains to use beam manufacturing, or is pressed into thin packing OSB.
9. as any one described method in the claim 1 to 8, it is characterized in that waste material glued board, stripping film and plywood parquet obtain to use in making long cutting blade.
10. as one or multinomial described method in the claim 1 to 9, it is characterized in that, produce the plate with smooth surface, the veneer of its outside is by 30-200g/m 2The long cutting blade of three-dimensional form.
CNA2004100882906A 2003-10-21 2004-10-21 Method for the manufacture of long chips or long shavings with defined dimensions Pending CN1608815A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10349485.5 2003-10-21
DE2003149485 DE10349485A1 (en) 2003-10-21 2003-10-21 Process for the production of long shavings or long shavings with defined dimensions

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CN1608815A true CN1608815A (en) 2005-04-27

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EP (1) EP1525965A3 (en)
CN (1) CN1608815A (en)
DE (1) DE10349485A1 (en)

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US8734947B2 (en) 2010-04-22 2014-05-27 Forst Concepts, LLC Multipass comminution process to produce precision wood particles of uniform size and shape with disrupted grain structure from wood chips
US8871346B2 (en) 2010-04-22 2014-10-28 Forest Concepts, LLC Precision wood particle feedstocks with retained moisture contents of greater than 30% dry basis
US8034449B1 (en) 2010-04-22 2011-10-11 Forest Concepts, LLC Engineered plant biomass feedstock particles
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US9604387B2 (en) 2010-04-22 2017-03-28 Forest Concepts, LLC Comminution process to produce wood particles of uniform size and shape with disrupted grain structure from veneer
US9440237B2 (en) 2010-04-22 2016-09-13 Forest Concepts, LLC Corn stover biomass feedstocks with uniform particle size distribution profiles at retained field moisture contents
US8497020B2 (en) 2010-04-22 2013-07-30 Forest Concepts, LLC Precision wood particle feedstocks
US8507093B2 (en) 2010-04-22 2013-08-13 Forest Concepts, LLC Comminution process to produce precision wood particles of uniform size and shape with disrupted grain structure from wood chips
US8481160B2 (en) 2010-04-22 2013-07-09 Forest Concepts, LLC Bimodal and multimodal plant biomass particle mixtures
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US9061286B2 (en) 2010-04-22 2015-06-23 Forest Concepts, LLC Comminution process to produce precision wood particles of uniform size and shape with disrupted grain structure from wood chips
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EP1525965A3 (en) 2008-03-12
DE10349485A1 (en) 2005-05-25
EP1525965A2 (en) 2005-04-27

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Application publication date: 20050427