CN102275203A - Extrusion head for wood and bamboo hollow board extruder - Google Patents
Extrusion head for wood and bamboo hollow board extruder Download PDFInfo
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- CN102275203A CN102275203A CN2011101932940A CN201110193294A CN102275203A CN 102275203 A CN102275203 A CN 102275203A CN 2011101932940 A CN2011101932940 A CN 2011101932940A CN 201110193294 A CN201110193294 A CN 201110193294A CN 102275203 A CN102275203 A CN 102275203A
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Abstract
The invention relates to an extrusion head for manufacturing a wood and bamboo hollow board formed internally and externally in an extrusion forming mode, and aims to provide an extrusion head for manufacturing a wood and bamboo hollow board which is high in static bending strength, insusceptible to longitudinal cracking and high in the performance of a longitudinal water absorption expansion ratio, and the extrusion head is favorable for prolonging the service life of a die. In the technical scheme, in the extrusion head for the wood and bamboo formed hollow board extruder has a plurality of slide holes which are in sliding fit with a core column in a die pressing gap. The extrusion head is characterized in that: at least one row of recesses and bulges which are arranged mutually in a staggered mode are distributed on the end face of the extrusion head; projections, which are perpendicular to the upper surface of the extrusion head, of the recesses and the bulges are in a trapezoid or an arc shape; two rows or more than two rows of recesses and bulges which are arranged transversely are distributed on the end face of the extrusion head; the same row of recesses and bulges are arranged mutually in a staggered mode, and the recesses and the bulges are formed at positions of aligning from top down between the two adjacent rows; and a plurality of long slots which are parallel to axes of the slide holes are formed on wall parts of the slide holes in the extrusion head.
Description
Technical field
The present invention relates to a kind of hollow artificial board shaping extrusion equipment; Especially a kind of extrusion head that adopts the extrusion modling mode to make the inside and outside moulding cored slab of wooden bamboo matter.
Background technology
The manufacturing and the production of wood bamboo matter moulding cored slab (containing artificial hollow chipboard) 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.
Wood bamboo matter moulding cored slab be with timber and bamboo wood at the wood chip of felling, the processing and utilization process produces, bamboo shaving the like waste as raw material, the sheet forming of the hollow that operations such as drying, applying glue, extrusion modling are made.Its most key technology is the extrusion modling operation, and the core of extrusion modling operation is the morphosis design of moulding extrusion head.
CN200510095335.7 discloses " hollow press for artificial chipboard " patent of invention technology through Piao.This art designs a kind of hollow hollow press for artificial chipboard.This machine has a box blanking bin, and the blanking bin bottom is connected with by two groups of steel plates and seals synthetic plate forming passage face-to-face, and the hollow plate after the moulding after the moulding, is forced out from the bottom in this passage, and the extrusion head end face of employing is the plane.The defective of the artificial chipboard of this technology extrusion modling is that sheet material pushes intermittently that cemented surface is the structure on plane between the forming unit of formation, its vertical MOR is lower, the disconnected plate that produces during carrying is more, loss is big, particularly vertically expansion rate of water absorption is very big, use when using adhesive always to reach national forestry industry standard set quota value, thereby limited the application of this sheet material;
CN200942553 discloses Wang Weidong " the corrugated end face extrusion head of hollow flakeboard extruder " utility model patent technology.This art designs a kind of end face be the extrusion head of corrugated surface, can be one dimension or two-dimentional waveform curved surface, can make the machine direction of raw material no longer be the parallel-plate cross direction or the thickness of slab direction distributes.The hollow shavings board raw material of this technology manufacturing forms according to the wave molding extruding, though made cemented surface between the particle unit into curved surface by the plane during this extrusion head extruding, but when plate surface is applied vertical force, the sheet material particle still can be sheared the changing of the relative positions between the unit, easily along the wave molding fracture, vertically MOR does not improve the sheet material of large format when carrying.Because the cross section of the two-dimentional corrugated end face of extrusion head is semicircle, and when extruding raw material, its thrust direction is 0～90 ° diversity angle, produced a very big side direction extrapolation component simultaneously, caused die deformation impaired mould.This cross section is that the two-dimentional extrusion head of semicircular structure can't be applied in the actual production.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned background technology, a kind of extrusion head of extruder is provided, this extrusion head should be able to make vertical MOR height, is difficult for longitudinal fracture, the vertical good wooden bamboo matter cored slab of expansion rate of water absorption performance; And help prolonging die life.
Technical scheme provided by the invention is: the extrusion head of wooden bamboo matter moulding cored slab extruder is shaped on the slide opening that several can be slidingly matched with the stem stem in the mold pressing gap in this extrusion head; It is recessed and outstanding that at least one rows of mutually staggered that it is characterized in that distributing on the end face of extrusion head is arranged, and the described recessed and outstanding projection perpendicular to the extrusion head upper surface is trapezoidal or arc.
Transversely arranged recessed and outstanding of the two or more rows that distributing on the described extrusion head end face; Same row's recessed and outstanding interlaced arrangement, and each position that aligns up and down between adjacent two rows is respectively recessed and outstanding.
The wall portion of the slide opening in the described extrusion head is shaped on several elongated slots parallel with the slide opening axis.
The cross-sectional profiles line of described elongated slot is rectangle or arc.
Described slide opening is circular hole or rectangular opening or polygonal hole.
In the upper surface and lower surface of described extrusion head, have at least a surface to make laterally rolling rule or irregular ripple face.
The invention has the beneficial effects as follows: since to wooden bamboo matter moulding cored slab extruder critical component---the end surface shape and the slide opening structure of extrusion head have been done improvement, the particle unit that not only makes extruding form becomes by a plurality of recessed and outstanding curved surfaces that interlock each other, is added hot gluing again so that recessed and outstanding mode is mutual chimeric between the faying face of adjacent particle unit.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, make that not only connecting fastness greatly increases, and obviously improved the water-swelling property of length direction, after particularly the plate face being applied vertical power, can't shear the changing of the relative positions between two adjacent particle unit, thereby improved vertical MOR of sheet material exponentially, disconnected plate phenomenon when having eliminated carrying, (adhesive surface between the particle unit in original sheet material is the plane, only depend on the gummed power of adhesive between two particle unit, apply power perpendicular to the plate face after, the changing of the relative positions easily takes place to shear between adjacent particle unit, so vertically MOR is lower, sheet material ruptures easily); But also make the wooden bamboo fibre direction in each particle unit can carry out crisscross being 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; Greatly improve sheet material laterally and the otherness between the longitudinal strength, enlarged its range of application.Thereby can push expeditiously and produce above-mentioned high-quality cored slab.In addition, when this extrusion head pushed particle, its position, end face both sides of the edge did not produce cross component force to the moulded board on end face both sides, has effectively reduced the influence to moulded board, has improved the service life of mould.
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 perspective view of one of embodiment of extrusion head end face area of the present invention.
Fig. 4 is two the perspective view of the embodiment of extrusion head end face area of the present invention.
Fig. 5 adopts extrusion head shown in Figure 3 to process the main TV structure schematic diagram of the cored slab end face area that obtains.
Fig. 6 is three the perspective view of the embodiment of extrusion head end face area of the present invention.
Fig. 7 is four the perspective view of the embodiment of extrusion head end face area of the present invention.
Fig. 8 is the main TV structure schematic diagram (orthographic projection view of extrusion head end face) of extrusion head shown in Figure 7.
Fig. 9 is the stereochemical structure decomposing schematic representation that adopts the wooden bamboo matter moulding cored slab that the present invention is processed to form.
Figure 10 is the engomphosis relation schematic diagram of each particle unit when overlooking state in the cored slab shown in Figure 9.
Figure 11 is the structure for amplifying schematic diagram of the cross section of stem stem of the present invention.
Figure 12 is the stereochemical structure decomposing schematic representation that extrusion head shown in Figure 6 is processed the cored slab that obtains.
Figure 13 is the perspective view of the particle unit in the cored slab shown in Figure 12.
Figure 14 be in the extrusion head of the present invention recessed and outstanding perpendicular to the extrusion head upper surface be projected as arc the time, the orthographic projection view of the particle unit end face that is obtained.
Figure 15 is the perspective view perpendicular to the cored slab upper surface of the described particle of Figure 14 unit.
Figure 16 is the operation principle schematic diagram of cored slab extrusion forming device.
Figure 17 adopts the present invention to process two schematic perspective view of the cored slab structure of acquisition.
Figure 18 adopts the present invention to process three end face area orthographic projection schematic diagram of the cored slab structure of acquisition.
Figure 19 adopts the present invention to process four end face area orthographic projection schematic diagram of the cored slab structure of acquisition.
Figure 20 adopts the present invention to process five end face area orthographic projection schematic diagram of the cored slab structure of acquisition.
Figure 21 adopts the present invention to process six end face area orthographic projection schematic diagram of the cored slab structure of acquisition.
Figure 22 adopts the present invention to process seven end face area orthographic projection schematic diagram of the cored slab structure of acquisition.
Figure 23 adopts the present invention to process eight end face area orthographic projection schematic diagram of the cored slab structure of acquisition.
Figure 24 adopts the present invention to process nine end face area orthographic projection schematic diagram of the cored slab structure of acquisition.
Figure 25 adopts the present invention to process nine end face area orthographic projection schematic diagram of the cored slab structure of acquisition.
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.
Existing artificial hollow chipboard 1 (as Fig. 1 to shown in Figure 2) is that the particle unit 1-2 by a plurality of sheets forms along the superimposed bonding of the length direction of cored slab; The wooden bamboo matter particle and the fiber of irregular alignment are 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 cored slab; Obviously, the connection between the particle unit 1-2 in twos relies on the gummed power that adhesive produces fully.Because two adhesive surfaces of particle unit are the plane, vertically MOR is lower naturally, sheet material along the longitudinal cross section (being the faying face between the particle unit 1-2) fracture easily, and the general plane of disruption is adhesive surface.
This kind structure of existing artificial hollow chipboard is determined by extrusion forming process.(following be example with horizontal extrusion forming device to related extrusion forming device; Referring to Figure 16) include the moulded board that a pair of horizontal fixed is installed, the mold pressing gap between upper molded plate 9-1 and the following moulded board 9-2 is corresponding with the sheet metal thickness of wanting moulding, level a plurality of columniform stem stems 10 of arranging in the mold pressing gap; The place ahead of moulded board is provided with an extrusion head 6, on this extrusion head and arrange and be shaped on horizontally a plurality of and be set on slide opening 6-3 on the stem stem slidably, extrusion head is slidingly matched by slide opening and stem stem, side-to-side movement in the mold pressing gap (glide direction as shown by arrow A) simultaneously; The thickness of extrusion head leading portion and width are all and the mold pressing gap fit between the moulded board.During work, discharge a certain amount of particle that is mixed with adhesive by blanking device at every turn, then extrusion head under actuating unit promotes with particle pushing tow (extrusion head end face 6-9 be direct pushing tow exert pressure face) in the mold pressing gap between two moulded boards, make the particle unit bonding of these particles and last circulation pushing moulding and form new particle unit, make shaping blank in the mold pressing gap some distances that move forward simultaneously again; This circulates repeatedly, just forms the semi-finished product of wooden bamboo matter moulding cored slab 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.
One of improvement that the present invention did, be recessed 6-2 and the outstanding 6-1 (as shown in Figure 3) of at least one horizontal row that on the extrusion head end face of extruder (horizontal extruder), distributing to interlaced arrangement, the described recessed and outstanding projection perpendicular to extrusion head upper surface 6-8 (or lower surface) (when extrusion head was arranged as shown in figure 16, this projection was with recessed identical with projection that give prominence on horizontal plane) is trapezoidal or arc; Like this, extrusion process by this extrusion head, two cemented surfaces of formed particle unit just (for example become curved surface by original plane, adopt extrusion head shown in Figure 3, just formed the recessed 1-3 and the outstanding 1-5 of horizontal interlaced arrangement on the formed particle unit 3 shown in Figure 5) make the plane gummed between original unit of particle in twos become recessed and outstanding chimeric mutually curved surface gummed; Can significantly improve the gummed area, significantly increase the adhesive strength of cored slab.
Further, regular distribution transversely arranged recessed and outstanding of two or more rows on the described extrusion head end face; Same row's recessed and outstanding interlaced arrangement, and each position of aligning up and down is respectively that recessed and outstanding (for example: the row of going up is recessed, and following what arrange correspondence is outstanding between adjacent two rows; Otherwise last row gives prominence to, and what following row was corresponding is recessed).Because the end surface shape of extrusion head has determined the shape (for example, adopt extrusion head shown in Figure 4, the end face structure of formed particle unit 3 just as shown in figure 24) of the particle unit that extruding forms; Obviously, this structure can increase substantially the chimeric surface fiber and involve power, increases vertical MOR of cored slab.
Obviously, can adopt on the described extrusion head end face that three rows, four rows or more rows' is transversely arranged recessed and outstanding; 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 that the present invention did, be the wall portion of the slide opening 6-3 in described extrusion head be shaped on several parallel with the slide opening axis and with protrude the elongated slot (omitting elongated slot among the figure) that 6-6 slidably cooperates, make the cross-sectional profiles line of slide opening and the outer contour of stem stem cross section (shown in Figure 11) match, elongated slot length is through the length of whole slide opening.Accordingly, the protrusion (quantity of elongated slot and protrusion can be determined as required) of also uniform several and stem shaft line parallel on the peripheral surface of described stem stem; The cross-sectional profiles line of described protrusion and elongated slot recommends to adopt rectangle or arc.Adopt the template of this kind structure, the wooden bamboo matter moulding cored slab of extrusion modling, the wall portion of its inner hole has just formed the groove 2-1 (as shown in figure 18) parallel with the hole axis of respective numbers; Can significantly improve the noise elimination effect like this, reduce capacity of heat transmission.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 that the present invention did is in the upper surface 6-8 and lower surface of extrusion head 6, has at least a surface to make laterally rolling rule or irregular corrugated surface; Accordingly, 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; So that in the upper surface and lower surface of the cored slab that processing obtains, at least one surface forms corrugated surface 5.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 17.The radian of corrugated surface and distributional pattern can be determined as required; Can be well-regulated corrugated surface, can also be irregular wavy surface; Also can 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 cored slab increase, further improve its intensity than the thickness of weak part.Figure 17 is to cored slab structure chart shown in Figure 23, and Figure 19, Figure 20, Figure 22 and Figure 23 only make corrugated surface at the upper end face of cored slab, and Figure 17, Figure 18 and Figure 21 then are that corrugated surface is all made on the surface at two ends up and down.
What be also pointed out that is: the position, both sides of the edge up and down of this extrusion head end face and the end face moulded board on both sides up and down are 90 right angles of spending; So have only longitudinal thrust during work, do not produce cross component force, effectively reduced the influence of both sides moulded board up and down, the service life of having improved mould.
The manufacturing process of wooden bamboo matter moulding cored slab of the present invention is:
1) get the raw materials ready: obtain raw material by processing, raw thickness is at 1-3mm;
2) drying: above-mentioned raw materials is dried to moisture content 3～8%;
3) screening: raw material 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: qualified raw material is carried out even applying glue, and adhesive is a solid content greater than 52% liquid glue, and resin added is 6～12% of a raw material weight;
5) extrusion modling: adopt vertical or horizontal extruder and extrusion head of the present invention, the extruding heating-up temperature is 140～180 ℃, with the speed production moulding cored slab of 0.4～0.7m/min;
6) post-production: the moulding cored slab of producing is cut into the finished product that the regulation breadth requires by the slab slasher saw.
Manufacturing process embodiment:
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, the extruding heating-up 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 5 for use, adopts extrusion head extrusion modling shown in Figure 3.
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, the extruding heating-up temperature is 140～180 ℃, and producing thickness with the speed of 0.4～0.6m/mi n is the moulding cored slab of 35mm.The cored slab cross section is selected structure shown in Figure 24 for use, adopts extrusion head extrusion modling shown in Figure 4.
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, the extruding heating-up 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 8 for use, adopts extrusion head extrusion modling shown in Figure 7.
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 wood chip 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, the extruding heating-up 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 6, the cored slab cross section of extrusion modling is identical with structure shown in Figure 25.
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 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 industry standard regulation, and the leading indicator value of the performance of product of the present invention all reaches the main mechanical performance index requirement of national forestry industry standard " extrusion hollow chipboard " (LY/T 1856-2009), not only vertically the MOR desired value has several times ground to improve, eliminated the disconnected plate phenomenon of handling process fully, and length direction makes length direction expansion rate of water absorption desired value 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 (6)
1. the extrusion head of wooden bamboo matter moulding cored slab extruder is shaped on the slide opening (6-3) that several can be slidingly matched with the stem stem (10) in the mold pressing gap in this extrusion head (6); Recessed (6-2) that at least one rows of mutually staggered that it is characterized in that distributing on the end face of extrusion head is arranged and give prominence to (6-1), the described recessed and outstanding projection perpendicular to extrusion head upper surface (6-8) is trapezoidal or arc.
2. the extrusion head of wooden bamboo matter moulding cored slab extruder according to claim 1 is characterized in that: transversely arranged recessed and outstanding of the two or more rows that distributing on the described extrusion head end face; Same row's recessed and outstanding interlaced arrangement, and each position that aligns up and down between adjacent two rows is respectively recessed and outstanding.
3. the extrusion head of wooden bamboo matter moulding cored slab extruder according to claim 1 and 2 is characterized in that: the wall portion of the slide opening in the described extrusion head is shaped on several elongated slots parallel with the slide opening axis.
4. the extrusion head of wooden bamboo matter moulding cored slab extruder according to claim 3, it is characterized in that: the cross-sectional profiles line of described elongated slot is rectangle or arc.
5. the extrusion head of wooden bamboo matter moulding cored slab extruder according to claim 4 is characterized in that: described slide opening is circular hole or rectangular opening or polygonal hole.
6. the extrusion head of wooden bamboo matter moulding cored slab extruder according to claim 5 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 rule or irregular ripple face.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110193294.0A CN102275203B (en) | 2011-07-10 | 2011-07-10 | Extrusion head for wood and bamboo hollow board extruder |
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| CN201110193294.0A CN102275203B (en) | 2011-07-10 | 2011-07-10 | Extrusion head for wood and bamboo hollow board extruder |
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| CN102275203B CN102275203B (en) | 2014-04-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110722656A (en) * | 2019-10-25 | 2020-01-24 | 浙江省林业科学研究院 | Continuous forming method and forming device for super-thick wood-bamboo hollow formed wallboard |
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| JP4450694B2 (en) * | 2004-08-11 | 2010-04-14 | 日本プロファイル工業株式会社 | Manufacturing method of vertical frame material of door frame |
| CN202155933U (en) * | 2011-07-10 | 2012-03-07 | 浙江省林业科学研究院 | Extruding head of wood and bamboo molding hollow plate extruder |
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|---|---|---|---|---|
| CN1039205A (en) * | 1988-07-13 | 1990-01-31 | 夏崇升 | Make the expansion bush die of cavity plywood |
| WO2002026467A2 (en) * | 2000-09-26 | 2002-04-04 | Huntsman International Llc | Extrusion head |
| WO2002026467A3 (en) * | 2000-09-26 | 2002-06-20 | Huntsman Int Llc | Extrusion head |
| JP4450694B2 (en) * | 2004-08-11 | 2010-04-14 | 日本プロファイル工業株式会社 | Manufacturing method of vertical frame material of door frame |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110722656A (en) * | 2019-10-25 | 2020-01-24 | 浙江省林业科学研究院 | Continuous forming method and forming device for super-thick wood-bamboo hollow formed wallboard |
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| CN102275203B (en) | 2014-04-16 |
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