CN102248570B - Internal and external molded wood-bamboo hollow plate and manufacturing method thereof - Google Patents
Internal and external molded wood-bamboo hollow plate and manufacturing method thereof Download PDFInfo
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- CN102248570B CN102248570B CN 201110193316 CN201110193316A CN102248570B CN 102248570 B CN102248570 B CN 102248570B CN 201110193316 CN201110193316 CN 201110193316 CN 201110193316 A CN201110193316 A CN 201110193316A CN 102248570 B CN102248570 B CN 102248570B
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Abstract
The invention relates to an internal and external molded wood-bamboo hollow plate with the characteristics of high strength, remarkably improved swelling rate of water absorption, good sound isolation and heat insulation effect, and high decorating effect of arc molding on the surface. According to the technical scheme of the invention, the internal and external molded wood-bamboo hollow plate comprises a hollow plate body, wherein the hollow plate body is formed by overlapping and bonding a plurality of chip units, each chip unit is formed by extruding and bonding wood-bamboo chips and an adhesive; the length and height of each chip unit are identical to the width and thickness of the hollow plate respectively; and a plurality of holes are formed in the hollow plate body. The hollow plate is characterized in that at least one row of notches and bumps are staggered on each chip unit, and all notches and bumps between two adjacent chip units are embedded one another and bonded to form the molded hollow plate. The method for manufacturing the internal and external molded wood-bamboo hollow plate comprises the following steps: 1) preparing materials; 2) drying; 3) screening; 4) applying the adhesive; and 5) extruding and molding.
Description
Technical field
The present invention relates to a kind of wood-based plate and manufacture method thereof; Especially a kind of timber of inside and outside moulding or the cored slab and the manufacture method of bamboo wood material.
Background technology
Wood bamboo matter moulding cored slab (containing artificial hollow chipboard) be with timber and bamboo wood at the branch of felling, the processing and utilization process produces, butt, slab, wooden bamboo bits, wood shavings the like waste and undersized log bamboo wood, useless time wooden bamboo wood as raw material, can suitably add agricultural wastes such as wheat straw or crushed aggregates of straw, through chip, screen, the hollow plate of oven dry, applying glue, the technological process of production such as continuously extruded hot briquetting is made in special mould machinery inside and outside moulding.
The manufacturing and the production of wood bamboo matter moulding cored slab can be with changing rejected material to useful resource, and then obtain the artificial board product of superior performance.This series products has that stable performance, density are low, insulation, heat insulation, insulate against sound, save material, after the Wood veneer surfaced processing of bamboo, have stable performance, intensity height, shock-resistant, advantage such as compressive property is good, be widely used in door panel, fields such as inner wall of building, floor, furniture manufacturing.Therefore, this series products has reproducible utilization, biodegradable characteristic, to making up environmentally friendly, the recycling novel industry pattern of resources conservation, promotes traditional wood-based panel industry upgrading, has great economic worth and social benefit.
Existing artificial hollow chipboard is to be a kind of common moulding cored slab that raw material is produced with the wooden shavings, the major defect that exists is, vertical MOR of sheet material is lower, generally has only 10～20% of horizontal MOR, and sheet material is cross section fracture along the longitudinal easily; The expansion rate of water absorption of the length direction of sheet material is higher, does not reach 15% standard value of national forestry industry standard " extrusion hollow chipboard " (LY/T 1856-2009) regulation substantially.In addition, the mould easy deformation in the production process.
CN200610085849.9 discloses the patented technology through " artificial hollow chipboard " of Piao, Wang Qiliang, Zhang Hongdan, Shang Yanwei etc.This invention technology has proposed a kind of wood wool through artificial boards that the operation manufacturing forms and the center has hollow bore such as fragmentation, drying, screening, applying glue and extrusion modlings.
CN200610040847.8 discloses " agricultural crop straw hollow chipboard " patented technology through Piao, Wang Qiliang, Zhang Hongdan, Shang Yanwei etc.This technology is on the invention technical foundation of CN200610085849.9 " artificial hollow chipboard ", and having proposed a kind of utilization is material with wood wool and agricultural crop straw, and the extrusion modling manufacturing forms and the center has the artificial hollow chipboard of hollow hole.
Though more than two technology adopt the artificial hollow chipboard of the method manufacturing of extrusion modlings to have hollow hole, only relate to the interior molding structure of circular hole, sound insulation and effect of heat insulation are limited.The surface of sheet material still is the common planar form.Vertical MOR of sheet material is lower, has only laterally to show 10～20% of Qu Qiangdu; Sheet material pushes the major defect of cross section fracture easily along the longitudinal still not to be improved.The thickness expansion rate of water absorption of sheet material is better, but the length direction expansion rate of water absorption does not reach 15% requirement of national forestry industry standard regulation.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned background technology, a kind of wooden bamboo matter cored slab of inside and outside moulding is provided, this cored slab should have that vertical MOR obviously improves, the length direction expansion rate of water absorption obviously improves, acoustical and thermal is effective, rule of surface or irregular arc moulding have the characteristics of indoor wall and furniture decoration effect preferably, and save material.
Another object of the present invention provides the manufacture method of above-mentioned cored slab, and this method should have the characteristics of production efficiency height, product structure novelty, function admirable, and mould is not yielding, long service life.
Technical scheme provided by the invention is: a kind of wooden bamboo matter cored slab of inside and outside moulding, comprise the cored slab body, this body is pressed the particle unit of a plurality of sheets that form to arrange superimposed and bond along the length direction of cored slab and is formed by continuous impact extrusion, each particle unit forms by the wooden bamboo matter particle and the adhesive extruding bonding of irregular distribution; The length of particle unit is with width and the thickness with cored slab is identical highly respectively; And be shaped on several holes that alongst are arranged in parallel in the body, it is characterized in that a plurality of recessed and outstanding of at least one rows of mutually staggered arrangement that also distributing on the described particle unit, recessed and the outstanding chimeric mutually and described moulding cored slab of bonding back formation of all between the adjacent in twos particle unit.
Transversely arranged a plurality of recessed and outstanding of the two or more rows that distributing on the described particle unit; Recessed and the outstanding interlaced arrangement of several of same row, and between adjacent two rows each position by interlaced arrangement about recessed and outstanding.
The described recessed and outstanding projection perpendicular to the cored slab upper surface is trapezoidal or arc.
Described hole is circular hole or rectangular opening or polygonal hole.
Also be shaped on some the grooves parallel on the hole wall of described hole with the hole axis.
Described groove is square-section groove or arc section groove.
In two outer surfaces up and down of described wooden bamboo matter cored slab, have at least an outer surface to make laterally rolling corrugated surface.
Another technical scheme provided by the invention is: a kind of manufacture method of wooden bamboo matter cored slab of inside and outside moulding, carry out according to following steps:
1) get the raw materials ready: the wooden bamboo material that specification is bigger is machined to the wood shavings fragment by chipper drum, and its thickness is less than 3mm, and length is less than 30mm, and width is less than 10mm;
2) drying: above-mentioned raw materials is dried to moisture content 3～8%;
3) screening: dried raw material enters the vibratory sieve screening, reaches thickness 1～3mm, length 5～30mm, and the acceptable material of width 1～10mm is sent into the cored slab form wire;
4) applying glue: qualified raw material is carried out even applying glue, and resin added is 6～12% of a raw material weight;
5) extrusion modling: adopt vertical or horizontal extruder, the extruding heating-up temperature is 140～180 ℃, produces cored slab with the speed of 0.4～0.7m/min; Dispose a pair of hard-wired moulded board on the extruder, go back the stem stem that parallel arrangement has a plurality of cylindricalitys that the moulding of cored slab hole uses in the mold pressing gap between two moulded boards; Other has an extrusion head that matches with the mold pressing gap;
It is characterized in that being shaped on the extrusion head end face of described extruder a plurality of indents and the evagination that at least one rows of mutually staggered is arranged; Also be shaped on a plurality of slide openings that are arranged in parallel and are slidingly matched one by one with each stem stem respectively in the extrusion head; The projection perpendicular to the extrusion head upper surface of described indent and evagination is trapezoidal or arc.
Indent and evagination that the two or more rows that distributing on the end face of described extrusion head is transversely arranged; Same row's several indents and the interlaced arrangement of evagination, and each corresponding up and down position is respectively indent and evagination between adjacent two rows.
The protrusion of uniform several and stem shaft line parallel on the peripheral surface of described stem stem; The wall portion of the slide opening in the described extrusion head is shaped on several elongated slots parallel with the slide opening axis and that slidably cooperate with described protrusion.
The cross-sectional profiles line of described protrusion and elongated slot is rectangle or arc.
In the upper surface and lower surface of described extrusion head, have at least a surface to make laterally rolling corrugated surface; The moulded board inboard is fixed with and the upper surface of extrusion head and the lower surface mould of wedging mutually.
The invention has the beneficial effects as follows:
1, the wooden bamboo matter cored slab that is provided, because chimeric mutually and add hot gluing in recessed and outstanding mode between the faying face of adjacent particle unit in twos, this just feasible connection fastness greatly increases; And, the same particle unit above faying face of two rows that also distributing, above the mutually corresponding position of a row and a following row also respectively by recessed and give prominence to interlaced arrangement bond and form (between the two rows of thickness direction glue together form by opposite form wire), vertical MOR of cored slab is improved exponentially, disconnected plate phenomenon when having eliminated carrying, sheet material easily along the longitudinal the problem of cross section fracture also obtain the solution of essence.
And since in twos between the faying face of adjacent particle unit with the mutual chimeric gummed of recessed and outstanding mode, not only increased the gummed area of glue-line greatly, and increased the power that involves mutually between fiber at length direction, thereby obviously improved the expansion rate of water absorption of length direction, the hollow chipboard that has changed existing explained hereafter is difficult to reach the length direction expansion rate of water absorption index of national forestry industry standard regulation, the situation that application is restricted.
2, the surface of cored slab is that corrugated surface, center are run through by the hole of several flat rafts; This structure can guarantee the bridge opening mechanics of sheet material effectively, also significantly saves material; Simultaneously the corrugated surface of sheet material makes the plate face have more third dimension and decorative effect, and makes between plate face and hole inwall the thick change of the thinnest part cheek big, and intensity is improved.In addition, the applied acoustics principle is set up groove at the hole inwall, can increase substantially the sound absorbing capabilities of endoporus, has improved the defening effect of sheet material effectively, also has heat insulation effect.
The manufacture method that is provided, because to critical component---the end surface shape and the slide opening structure of staking punch have been done brand-new design, not only make formed particle unit become curved surface by a plurality of recessed and outstanding combinations, glued together again so that recessed and outstanding mode is chimeric mutually between the faying face of adjacent in twos particle unit, gummed area and the power that involves that has increased the cemented surface fiber have been increased considerably, and then make that connecting fastness greatly increases, and has significantly improved vertical MOR of sheet material; But also the wooden bamboo fibre direction in each particle unit can crisscrossly be interweaved, and fiber is arranged towards sheet material length and width; Between the thin-walled between particularly can extrded material cored slab two holes, its bonding strength is promoted greatly; This has just greatly improved sheet material laterally and the otherness between the longitudinal strength, has improved the expansion rate of water absorption of length direction, has enlarged its range of application, thereby can push expeditiously and produce above-mentioned high-quality cored slab; And effectively reduced influence, improved the service life of mould moulded board.
Description of drawings
Fig. 1 is the perspective view of existing artificial hollow chipboard.
Fig. 2 is the stereochemical structure decomposing schematic representation of existing artificial hollow chipboard.
Fig. 3 is the main TV structure schematic diagram (i.e. the figure of the forward projection of this cored slab end face 1-10) of the particle unit of existing artificial hollow chipboard.
Fig. 4 is the stereochemical structure decomposing schematic representation of wooden bamboo matter moulding cored slab of the present invention.
Fig. 5 is the engomphosis relation schematic diagram of each particle unit when overlooking state among the present invention.
Fig. 6 is the perspective view of one of embodiments of the invention.
Fig. 7 is the end face structure schematic diagram of Fig. 6 embodiment.
Fig. 8 is two an end face structure schematic diagram of embodiments of the invention.
Fig. 9 is three an end face structure schematic diagram of embodiments of the invention.
Figure 10 is four an end face structure schematic diagram of embodiments of the invention.
Figure 11 is five an end face structure schematic diagram of embodiments of the invention.
Figure 12 is six an end face structure schematic diagram of embodiments of the invention.
Figure 13 is seven an end face structure schematic diagram of embodiments of the invention.
Figure 14 is eight an end face structure schematic diagram of embodiments of the invention.
Figure 15 is nine a stereochemical structure decomposing schematic representation of embodiments of the invention.
Figure 16 is the perspective view of the single particle unit in embodiment illustrated in fig. 15.
Figure 17 be embodiments of the invention ten in the main TV structure schematic diagram of particle unit.
Figure 18 be embodiments of the invention ten in the plan structure schematic diagram of particle unit.
Figure 19 is the schematic perspective view of one of end face structure of the staking punch that adopts of the present invention.
Figure 20 is two a schematic perspective view of the end face structure of the staking punch that adopts of the present invention.
Figure 21 is three a schematic perspective view of the end face structure of the staking punch that adopts of the present invention.
Figure 22 is four a schematic perspective view of the end face structure of the staking punch that adopts of the present invention.
Figure 23 is the main TV structure schematic diagram (front view of end face direction) of staking punch shown in Figure 20.
Figure 24 is the cross section structure for amplifying schematic diagram of stem stem.
Figure 25 is the operation principle schematic diagram of cored slab extrusion forming device.
Figure 26 is the matching relationship schematic diagram (being the cross-sectional structure schematic diagram) of staking punch and moulded board.
The specific embodiment
Below by embodiment, technical scheme of the present invention is described in further detail.
As shown in Figure 1 and Figure 2, existing artificial hollow chipboard comprises cored slab body 1, and this body is formed along the superimposed bonding of the length direction of cored slab by the particle unit 1-2 of a plurality of sheets, and irregular woody debris is distributing in each particle unit; Width S and the thickness H with cored slab is identical respectively with height H 1 for the length S1 of particle unit; And be shaped on several holes 2 that alongst stretch and be arranged parallel to each other in the body; Obviously, the gummed power (being weak link) that relies on adhesive to produce between the particle unit 1-2 fully.When two adhesive surfaces of particle unit are the plane, vertically apply power for sheet material perpendicular to the plate face, the changing of the relative positions easily takes place to shear between adjacent particle unit, sheet material along the longitudinal cross section (promptly the faying face between the particle unit 1-2) in twos fracture easily, the general plane of disruption is adhesive surface.This is the existing lower basic reason of the vertical MOR of artificial hollow chipboard.
This of artificial hollow chipboard kind of structure is determined by extrusion forming process.(with horizontal pressurizing unit is example to related extrusion forming device; Referring to Figure 25) include the moulded board that a pair of horizontal fixed is installed, the profile in the mold pressing gap between upper molded plate 9-1 and the following moulded board 9-2 is corresponding with the cross-sectional profiles of the sheet material of wanting moulding, and level is placed with a plurality of stem stems that are parallel to each other 10 in the mold pressing gap; The place ahead of moulded board is provided with an extrusion head 6, in this extrusion head and arrange be shaped on a plurality of horizontally and be set on the slide opening 6-3 of slide on the stem stem (glide direction as shown by arrow A), extrusion head under actuating unit drives, can reciprocatingly slide along about the stem stem (moving in the mold pressing gap between moulded board simultaneously); The thickness of extrusion head leading portion and width match with the mold pressing gap between the moulded board.During work, discharge a certain amount of wooden bamboo matter particle that is mixed with adhesive by blanking device at every turn, then extrusion head under actuating unit promotes with woody debris's pushing tow (extrusion head end face 6-9 be direct pushing tow exert pressure face) in the mold pressing gap of two moulded boards, make these particles extruding bonding form new particle unit and with the particle unit bonding of last circulation pushing moulding, some distances move forward to make the shaping blank mold pressing gap in (bondd form by several particle unit) simultaneously again; This circulates repeatedly, just forms the semi-finished product of artificial hollow chipboard after a plurality of particles unit stack bonding, and adds thermal finalization by the heater of installing on the moulded board; Artificial hollow chipboard is just constantly produced continuously.Because extrusion head end face 6-9 is the plane in the existing equipment, causes two adhesive surfaces of each the particle unit in the artificial hollow chipboard all to become the plane adhesive structure.
One of improvement of the related product of the present invention is: the particle unit 1-2 of original plane, sheet is changed into curve form, specifically be on the particle unit of each sheet, all to make spaced a plurality of recessed 1-3 of at least one rows of mutually staggered and outstanding 1-5 (shown in Figure 4), form curved surface particle unit 3; The described recessed and outstanding projection perpendicular to the cored slab upper surface (when the cored slab horizontal positioned, this projection is with recessed identical with projection that give prominence on horizontal plane) can be trapezoidal, or arc.Obviously, described recessed and outstanding be two kinds of shapes that a certain position possesses simultaneously in different angles; As a certain position 1-21 among Fig. 5 is downwards outstanding, but this position then is recessed upwards.
Just form the remarkable architectural feature of described moulding cored slab after recessed and the outstanding mutually chimeric and bonding of between the adjacent in twos curved surface particle unit all, bonding curved surface (being the profile that is squeezed into of unit particle) of corresponding chimeric formation has overcome the significant deficiency of (shown in Figure 2) plane bonding frangibility of existing processes formation fully about it, has significantly improved vertical MOR of sheet material.
Because the shape of curved surface particle unit is determined by the end surface shape of extrusion head 6, so only need end face (roof pressure face) shape of extrusion head is processed into and the same shape in curved surface particle unit, just can obtain the particle unit of required form when extrusion process.For example, extrusion head shown in Figure 20 can be processed and obtain particle unit shown in Figure 5.
Further, transversely arranged a plurality of recessed and outstanding of two or more rows that distributing on the described curved surface particle unit; Recessed and the outstanding interlaced arrangement of several of same row, and (as above arranging a certain position is recessed words by recessed and outstanding interlaced arrangement respectively at each corresponding up and down position between adjacent two rows, corresponding position is exactly outstanding among the following row, as Figure 15, shown in Figure 16).Like this, the interlaced interspersed gummed of adhesive surface, significantly increased the gummed area, promoted the power that involves mutually between the cemented surface fiber again, adhesion strength is significantly increased, stress is not easy again to concentrate, and vertical MOR of cored slab is significantly improved, and the length direction expansion rate of water absorption is significantly improved.Obviously, adopt extrusion head shown in Figure 19, the particle unit in the cored slab that extrusion process forms promptly as shown in figure 16.In addition, in the particle unit that Figure 16 shows, its recessed and outstanding projection (perpendicular to the projection of cored slab upper surface) is trapezoidal; And in the particle unit that Figure 18 shows, recessed and outstanding projection (perpendicular to the projection of cored slab upper surface) then is arc (what wherein solid line was represented is the recessed and outstanding outline line of the row of going up, the recessed and outstanding outline line of row under being that dotted line is represented).
For the bigger cored slab of thickness H, transversely arranged recessed and outstanding on the curved surface particle unit, can adopt three rows, four rows or more rows' structure (view omission); Like this, not only in horizontal (horizontal direction) the recessed and outstanding of a plurality of arrangements arranged, and in vertical (vertical direction) the recessed and outstanding of a plurality of arrangements arranged also, this will greatly improve vertical MOR of cored slab.
Two of the improvement of the related product of the present invention is: also can be shaped on several groove 2-1s parallel with the hole axis on the hole wall of described hole, groove quantity can be determined as required.Among Fig. 7, Fig. 8, Fig. 9, each hole all shows 4 uniform grooves.Described groove can be polygonal cross-section groove (hexagonal cross-section groove as shown in figure 10, a square-section groove shown in Figure 11), also can be the arc section groove.Groove can be arranged by transversely arranged one-tenth one, also can be arranged in two rows as shown in figure 12.Described hole also can be circular hole or rectangular opening or polygonal hole, and is selected as required.Owing to adopted poroid bridge opening mechanical structure, not only can economical with materials, improve timber intensity, the design of groove simultaneously can significantly improve the noise elimination effect, reduces capacity of heat transmission, thereby improves the sound insulation property and the heat-insulating property of sheet material.
Three of the improvement of the related product of the present invention is: be in two outer surfaces up and down of described cored slab, have at least an outer surface to make laterally rolling corrugated surface (Fig. 6 is to shown in Figure 12); Wherein Fig. 8, Fig. 9, Figure 10, Figure 11 only on wooden bamboo matter cored slab outer surface make corrugated surface 5-1; Fig. 6, Fig. 7, Figure 12 then are that two outer surfaces are all made corrugated surface up and down.The radian of corrugated surface and distributional pattern can be determined as required; Can be well-regulated corrugated surface (usually, trough is in the middle of adjacent two holes of sheet material, and crest is in directly over the sheet material hole center of circle), also can be irregular wavy surface; Can also process unique mould as required, make its surface have special texture.So can improve its surface three-dimensional sense and decorative effect, can also make the weaker local thickness of cored slab strengthen, further improve its intensity.
In addition, the raw material of described inside and outside moulding cored slab can be timber, bamboo wood, also can be agricultural crop straw etc., can also be above two kinds or more of mixing; The cell size that adopts material can be the wood shavings shape that bamboo timber etc. is processed into, and also can be the industrial wood waste that wood working industry produces, and as the bamboo and wood bits etc., can also be above two kinds or more of mixing.
Described inside and outside moulding cored slab can adopt the horizontal extruder extrusion process to form, and also can adopt the vertical extruder extrusion process to form.
Manufacturing step provided by the invention following (is example with timber):
1. get the raw materials ready: wooden bamboo raw material is carried out sorting, and the raw material that specification is bigger is machined to length less than 30mm with chipper drum, and thickness is less than the wood shavings fragment of 3mm.
2. dry: the porch temperature of drying machine is 180～200 ℃, and the EGT at moisture exhausting port place remains on 120～140 ℃.Dried woody debris moisture content should be controlled at 3～8%.
3. screening: particle is screened, reach thickness 1～3mm, length 5～30mm, the acceptable material of width 1～10mm is sent into the cored slab form wire;
4. applying glue: woody debris is carried out even applying glue; Adhesive is a solid content greater than 52% liquid glue (can making by oneself also, buyable obtains), and resin added is 6～10% of woody debris's weight.
5. extrusion modling: a certain amount of qualified particle is stabilized sends into cored slab make-up machine charging aperture continuously, and under the effect of extrusion head, qualified moulding cored slab is produced in extruding.
6. post-production: the moulding cored slab of producing is cut into the requirement of regulation breadth by the slab slasher saw.
What above-mentioned extrusion modling step adopted is horizontal extruder or vertical extruder (acquisition of extruder buyable), and the extruding heating-up temperature is 140～180 ℃, produces cored slab with the speed of 0.5～0.7m/min; Dispose a pair of hard-wired moulded board on the extruder, other have one with two moulded boards between the extrusion head 6 that matches of mold pressing gap, go back the stem stem that parallel arrangement is useful on a plurality of cylindricalitys of cored slab hole moulding in the mold pressing gap.
One of improvement of the related method of the present invention, be that extrusion head end face structure to extruder changes, make original planar structure into curved surface, indent 6-1 and evagination 6-2 that at least one rows of mutually staggered that distributing on this curved surface is arranged, the projection perpendicular to the extrusion head upper surface of described indent and evagination (when extrusion head was arranged as shown in figure 25, this projection was identical with the projection of evagination on horizontal plane with indent) is trapezoidal or arc (the shape and structure of described indent and evagination and cored slab particle unit recessed and outstanding identical; Purpose is the wooden bamboo matter cored slab particle unit that forms the same structure shape after the extrusion process); Also be shaped on a plurality of slide opening 6-3 that are arranged in parallel and are slidingly matched one by one with each stem stem respectively in the extrusion head.
Further, distributing on the end face of described extrusion head two or more rows transversely arranged indent and evagination; The interlaced arrangement of same row's indent and evagination, and each position that adjacent two rows align up and down is respectively indent and evagination.
Because the end surface shape of extrusion head has determined the shape of the particle unit that extruding forms, so above-mentioned improvement can guarantee to obtain the particle unit of identical curved-surface structure.
Two of the improvement of the related method of the present invention is protrusion 6-6 (cross-sectional structure of this stem stem as shown in figure 24) of uniform several and stem shaft line parallel on the peripheral surface of described stem stem; The wall portion of the slide opening in the described extrusion head also be shaped on several parallel with the slide opening axis and with the elongated slot that described protrusion 6-6 slidably cooperates, make the cross-sectional profiles line (view omissions) of slide opening and the cross section outer contour of stem stem match.Like this, just can form groove 2-1 (Fig. 1, shown in Figure 2) through the hole wall portion of pushing the cored slab that obtains.The preferred rectangle of cross-sectional profiles line or the arc of described protrusion and elongated slot.And described slide opening also can be selected circular hole or rectangular opening or polygonal hole for use as required; Stem stem also should be selected the cylindrical or vertical prismatic shape that matches with slide opening (as four prism type, four-prism shape, positive hexagon, positive eight prismatic etc.) for use.
Three of the improvement of the related method of the present invention is that the upper surface 6-8 of described extrusion head 6 is made laterally rolling corrugated surface (outer contour of extrusion head end is consistent with the outer contour of the moulding cored slab cross section that will produce) with at least one surface in the lower surface; Described two moulded board inboards are being fixed and the ripple of the cored slab outer surface mould of wedging (the outer contour fit of the cross section of the inner chamber outline line of mould cross section and extrusion head 6 ends) mutually.Like this, through pushing the upper surface of the cored slab that obtains, perhaps lower surface (two surfaces perhaps) just forms corrugated surface.For example, adopt extrusion head and moulded board (wherein the inner chamber outline line of mould 11 cross sections is a waveform) shown in Figure 26 can obtain moulding cored slab shown in Figure 6.
Embodiment 1:
1. get the raw materials ready: large-sized wood material is processed into the wood shavings particle of thickness at 1～3mm;
2. dry: that the wood shavings particle is dried to moisture content 3～8%.
3. screening: the wood shavings particle is screened, reach thickness 1～3mm, length 5～30mm, the acceptable material of width 1～10mm is sent into the cored slab form wire;
4. applying glue: woody debris is carried out even applying glue, and adhesive is a solid content greater than 52% liquid glue, and resin added is 6～10% of woody debris's weight.
5. extrusion modling: adopt vertical extruder, hot pressing temperature is 140～180 ℃, and producing thickness with the speed of 0.4～0.7m/min is the moulding cored slab of 28mm.The cored slab cross section is selected structure shown in Figure 14 for use, adopts extrusion head extrusion modling shown in Figure 19.
6. post-production: the cored slab of producing is cut into the finished product of regulation breadth by the slab slasher saw.
Embodiment 2:
1. get the raw materials ready: adopt the bamboo wood wood shavings, thickness is at 1-3mm;
2. dry: with the bamboo wood particle drying to moisture content 3～5%.
3. screening: bamboo wood wood shavings particle is screened the qualified cored slab form wire that is admitted to.
4. applying glue: the bamboo wood wood shavings are carried out even applying glue, and adhesive is a solid content greater than 52% liquid glue, and resin added is 8～12% of a bamboo shaving weight.
5. extrusion modling: adopt horizontal extruder, hot pressing temperature is 140～180 ℃, and producing thickness with the speed of 0.4～0.6m/min is the moulding cored slab of 35mm.The cored slab cross section is selected structure shown in Figure 13 for use, adopts extrusion head extrusion modling shown in Figure 21.
6. post-production: the cored slab of producing is cut into the finished product of regulation breadth by the slab slasher saw.
Embodiment 3:
1. get the raw materials ready: adopt wheat straw stalk particle, length is answered≤30mm;
2. dry: that wheat straw stalk particle is dried to moisture content 3～8%.
3. screening: wheat straw stalk particle is screened, reject the long material of length, the qualified cored slab form wire that is admitted to greater than 30mm.
4. applying glue: wheat straw stalk particle is carried out even applying glue, and adhesive is a solid content greater than 52% liquid glue, and resin added is 8～12% of a wheat straw stalk particle weight.
5. extrusion modling: adopt vertical extruder, hot pressing temperature is 140～180 ℃, and producing thickness with the speed of 0.4～0.5m/min is the moulding cored slab of 38mm.The cored slab cross section is selected structure shown in Figure 3 for use, adopts extrusion head extrusion modling shown in Figure 20.
6. post-production: the cored slab of producing is cut into the finished product of regulation breadth by the slab slasher saw.
Embodiment 4:
1. get the raw materials ready: adopt wooden bamboo bits particle industrial wood waste;
2. dry: as wooden bamboo bits to be dried to 5～8%, to send into the cored slab form wire.
3. screening: wooden bamboo bits are screened, reject the aniseed of length, the qualified cored slab form wire that is admitted to greater than 30mmm.
4. applying glue: wooden bamboo bits are carried out even applying glue, and adhesive is a solid content greater than 52% liquid glue, and resin added is 8～12% of a wooden bamboo bits weight.
5. extrusion modling: adopt vertical extruder, hot pressing temperature is 130～170 ℃, and producing thickness with the speed of 0.4～0.6m/min is the moulding cored slab of 40mm.Adopt extrusion head shown in Figure 22, the cored slab cross section of extrusion modling is identical with structure shown in Figure 23.
6. post-production: the cored slab of producing is cut into the finished product of regulation breadth by the slab slasher saw.
The cored slab that embodiment 1～4 produces carries out following Key Quality Indicator and detects:
1) density measurement: 4.2 regulation among the employing GB/T 17657-1999 " Test methods of evaluating the properties of woodbased panels and surface decorated woodbased panels ".
2) the horizontal and vertical MOR of sheet material is measured: 4.9 regulation among the employing GB/T 17657-1999 " Test methods of evaluating the properties of woodbased panels and surface decorated woodbased panels ".
3) mensuration of length direction expansion rate: 4.5 regulation among the employing GB/T 17657-1999 " Test methods of evaluating the properties of woodbased panels and surface decorated woodbased panels "
The cored slab that embodiment 1～4 produces is through detecting, and the detection data of acquisition see Table 1 (the physical and mechanical property list of extrusion head extrusion modling cored slab):
The physical and mechanical property list of table 1 extrusion modling cored slab
The MOR index of regulation is horizontal MOR desired value in the national forestry industry standard " extrusion hollow chipboard " (LY/T 1856-2009), do not stipulate vertical MOR desired value, reason is that fashion of extrusion is equidistant concora crush mode in the existing production technology, adjacent particle unit to be bonded as the plane bonding, its vertical MOR is very low, almost can't vertically lift carrying, thereby can't make stipulations to vertical MOR index when causing formulating standard.From last table test data as can be seen, the artificial hollow chipboard that existing technology is made is except vertical MOR index test value is very low, length direction expansion rate desired value in the actual production also is 15% the desired value that does not reach national forestry industry standard regulation, and the leading indicator value of the performance of product of the present invention all reaches national forestry industry standard " extrusion hollow chipboard " main mechanical performance index requirement (LY/T1856-2009), not only vertical MOR desired value has the raising of several times, eliminated the disconnected plate phenomenon of handling process fully, and length direction makes the length direction expansion rate of water absorption that improve (significantly the reducing) of highly significant also be arranged also because of the concaveconvex structure of particle unit pins down.Effect of the technology of the present invention and economic benefit highly significant.
Claims (7)
1. the wooden bamboo matter cored slab of moulding inside and outside a kind, comprise cored slab body (1), this body is pressed the particle unit (1-2) of a plurality of sheets that form to arrange superimposed and bond along the length direction of cored slab and is formed by continuous impact extrusion, each particle unit forms by the wooden bamboo matter particle and the adhesive extruding bonding of irregular distribution; The length of particle unit is with width and the thickness with cored slab is identical highly respectively; And be shaped on several holes (2) that alongst are arranged in parallel in the body, a plurality of recessed (1-3) that at least one rows of mutually staggered that it is characterized in that also distributing on the described particle unit is arranged and outstanding (1-5), all between the adjacent in twos particle unit recessed and outstanding chimeric mutually and bond after the described cored slab of formation;
Transversely arranged a plurality of recessed and outstanding of the two or more rows that distributing on the described particle unit; Recessed and the outstanding interlaced arrangement of several of same row, and between adjacent two rows corresponding up and down each position respectively by recessed and outstanding interlaced arrangement;
Also be shaped on some the grooves parallel (2-1) on the hole wall of described hole (2) with the hole axis.
2. the wooden bamboo matter cored slab of a kind of inside and outside moulding according to claim 1, it is characterized in that: the described recessed and outstanding projection perpendicular to the cored slab upper surface is trapezoidal or arc; Described hole (2) is circular hole or rectangular opening or polygonal hole; Described groove (2-1) is square-section groove or arc section groove.
3. the wooden bamboo matter cored slab of a kind of inside and outside moulding according to claim 2 is characterized in that: in two outer surfaces up and down of described wooden bamboo matter cored slab, have at least an outer surface to make laterally rolling corrugated surface.
4. the manufacture method of the wooden bamboo matter cored slab of moulding inside and outside a kind, carry out according to following steps:
1) get the raw materials ready: the wooden bamboo material that specification is bigger is machined to the wood shavings fragment by chipper drum, and its thickness is less than 3mm, and length is less than 30mm, and width is less than 10mm;
2) drying: above-mentioned raw materials is dried to moisture content 3～8%;
3) screening: dried raw material enters the vibratory sieve screening, reaches thickness 1～3mm, length 5～30mm, and the acceptable material of width 1～10mm is sent into the cored slab form wire;
4) applying glue: qualified raw material is carried out even applying glue, and resin added is 6～12% of a raw material weight;
5) extrusion modling: adopt horizontal or vertical extruder, the extruding heating-up temperature is 140～180 ℃, produces cored slab with the speed of 0.4～0.7m/min; Dispose a pair of hard-wired moulded board on the extruder, go back the stem stem (10) that parallel arrangement has a plurality of cylindricalitys that the moulding of cored slab hole uses in the mold pressing gap between two moulded boards; Other has an extrusion head that matches with the mold pressing gap;
It is characterized in that being shaped on extrusion head (6) end face of described extruder a plurality of indents (6-2) and the evagination (6-1) that at least one rows of mutually staggered is arranged; Also be shaped on a plurality of slide openings (6-3) that are arranged in parallel and are slidingly matched one by one with each stem stem respectively in the extrusion head; The projection perpendicular to extrusion head upper surface (6-8) of described indent and evagination is trapezoidal or arc;
Indent and evagination that the two or more rows that distributing on the end face of described extrusion head is transversely arranged; Same row's several indents and the interlaced arrangement of evagination, and each corresponding up and down position is respectively indent and evagination between adjacent two rows.
5. the manufacture method of the wooden bamboo matter cored slab of a kind of inside and outside moulding according to claim 4 is characterized in that: the protrusion (6-6) of uniform several and stem shaft line parallel on the peripheral surface of described stem stem; Slide opening wall portion in the described extrusion head is shaped on several elongated slots parallel with the slide opening axis and that slidably cooperate with described protrusion.
6. the manufacture method of the wooden bamboo matter cored slab of a kind of inside and outside moulding according to claim 5, it is characterized in that: the cross-sectional profiles line of described protrusion (6-6) and elongated slot is rectangle or arc.
7. the manufacture method of the wooden bamboo matter cored slab of a kind of inside and outside moulding according to claim 6 is characterized in that: in upper surface of described extrusion head (6-8) and the lower surface, have at least a surface to make laterally rolling corrugated surface (5-1); The moulded board inboard is fixed with and the upper surface of extrusion head and the lower surface mould of wedging mutually.
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| CN103723063B (en) * | 2012-10-15 | 2016-08-17 | 苏州天健竹业科技有限公司 | Bamboo wood bar component manufacturing method in a kind of vehicles railway carriage or compartment |
| CN103264429B (en) * | 2013-04-26 | 2016-05-04 | 南京林业大学 | A kind of method of utilizing two step flat-press processes to produce hollow chipboard |
| WO2019127164A1 (en) * | 2017-12-27 | 2019-07-04 | 深圳信炜科技有限公司 | Preparation method for anti-aliasing imaging element and optical sensor |
| CN110722656B (en) * | 2019-10-25 | 2023-06-13 | 浙江省林业科学研究院 | Continuous molding method and molding device for ultra-thick wood-bamboo hollow molded wallboard |
| CN113400421A (en) * | 2021-07-06 | 2021-09-17 | 江西圣金源科技板材有限公司 | Hexagonal splice plate and processing method thereof |
| CN114012842A (en) * | 2021-10-27 | 2022-02-08 | 北京林业大学 | Heating and punching device, hot pressing system comprising same, ultra-light hollow fiber base material and preparation method thereof |
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| JP2002264108A (en) * | 2001-03-12 | 2002-09-18 | Uchiyama Mfg Corp | Cork floor material and its manufacturing method |
| CN2700078Y (en) * | 2004-06-04 | 2005-05-18 | 黄金杨 | Sound-absorbing slab using European pine sheet |
| CN1958254A (en) * | 2006-03-08 | 2007-05-09 | 冯士祥 | Method for fabricating plates of solid wood, and products |
| CN200942553Y (en) * | 2006-04-12 | 2007-09-05 | 江阴市凯旋木业有限公司 | Corrugated end-face extruding head of hollow shaving board extruding machine |
| FR2924374B1 (en) * | 2007-12-04 | 2014-02-07 | Parquets Marty | PARQUET BLADE AND METHOD OF MANUFACTURE. |
| CN101520124A (en) * | 2009-03-23 | 2009-09-02 | 江苏胜阳实业股份有限公司 | Wood plastic rippling fiber high-strength hollow slab |
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