CN101088725A - Process of producing plate with small size timber - Google Patents
Process of producing plate with small size timber Download PDFInfo
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- CN101088725A CN101088725A CN 200610092997 CN200610092997A CN101088725A CN 101088725 A CN101088725 A CN 101088725A CN 200610092997 CN200610092997 CN 200610092997 CN 200610092997 A CN200610092997 A CN 200610092997A CN 101088725 A CN101088725 A CN 101088725A
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Abstract
The process of producing plate with small size timber includes turning and shearing timber section, shaping sheet, gluing sheets, assembling sheets, forming large board, trimming, gluing, hot pressing, cutting edge and other steps. The present invention can produce plate with smooth flat surface and high strength.
Description
(1) technical field
The invention is the method for attachment of whole the change (veneer increases and widens) of the medium and small veneer of single panel type sheet material (glued board, laminated timber etc.) production.It utilize rotary-cut small diameter grade material aborning and the veneer that makes or broken veneer by machining and shaping, change technical finesse for whole, veneer increases to widen and becomes the large format veneer.Big veneer like this can be used for middle plate, central layer or the dash board in particular cases of single panel type sheet material.This method belongs to single panel type sheet material (glued board, laminated timber etc.) production process technology technical field.
(2) background technology
The raw material of glued board: the juggle full-length of glued board is generally 1.27m and 2.54m.
The rotary-cut of veneer: owing to adopted rotary trunk-layer stripping machine without clamper, juggle can be threaded to 2cm to 3cm.
The connected mode of glued board: patent 90102753.7 usefulness yarns connect big method with little jointing of veneer, but poor effect, usability is poor; Patent 97115125.3, the method for little veneer finger spreading, but this method only increases the line contact length between the veneer and improves the veneer stress condition; Wooden plywood's intermediate plate of patent 95121110.2 to splicing method, but assembly is too loaded down with trivial details, influences productivity ratio; Patent 90107378.4, the method for producing glued board with waste single boards, end matching by hand, butt joint must be in slab must be than the position in middle level and spacing greater than 20 centimetres, otherwise can influence intensity; Also have and adopt mitered, but just increase the intensity of veneer junction and do not reach the intensity of veneer itself, so the not employing aborning in a large number of this method; The overlapping mode that adopts artificial assembly in thick central layer is also arranged, but on the thickness direction of its sheet material, be out of shape greatly irregular, intensity instability between ply and the layer; Some connected modes that also have other.
The applying glue mode of veneer: all do not refer to the applying glue mode about the method that veneer connects, yet applying glue mode and resin added and have very big influence to later operation to veneer shape, intensity, the size stability of junction.
The compression ratio of veneer: the method that connects about veneer is not all referred to the compression ratio of veneer, yet compression ratio has very big influence to shape, intensity and the size stability of veneer coupling part.
(3) summary of the invention
The objective of the invention is to make little fullveneer unitization, the veneer intensity height of junction, dimensional stability and planarization are good, eliminate the adverse effect that the folded heart brings; 1 big veneer can connect more than 1 time.
The veneer band that screws out, be cut into certain width on request after, for the ease of the end machining and shaping, the veneer two ends are must the depth of parallelism good.
For the ease of termination, the veneer end can machining and shaping, whether needs process certain shape according to definite ends such as quality of the seeds of veneer, material, density, thickness, quality of connection, comprise: shapes such as inclined-plane, facet-inclined-plane, inclined-plane-plane-inclined-plane, vertical plane-plane-vertical plane, rectangular teeth, stepped tooth, lance tooth, size need concrete and decide.Processing also can be placed on after the Veneer Cutting, before the drying, because this moment, veneer plasticity was good, is easy to machining and shaping.The coupling part of veneer must reach certain length, with the intensity of the coupling part that guarantees veneer.
Because the material of veneer, itself compactness, thickness, the character of glue, the technology of applying glue differ, glue on the veneer surface or inner the distribution differ.During fullveneer unitization, if two veneers of junction double spread respectively can not play good fixation to the veneer of junction, the both sides resilience at veneer gummed place just is bigger, can adopt the mode of impregnation.The method of impregnation is a kind of method preferably, and with two veneers of junction impregnation respectively, glue not only can couple together veneer, but also the fixing thickness of veneer junction, but after the impregnation, needs dry or adopts the glue of particularity such as the glue of pure dissolubility.
In order to guarantee bonding strength, double spread or impregnation length must connect the length of gummed part greater than veneer, guaranteeing the bonding strength of junction, and are unlikely to the junction starved and ftracture.
If under desirable situation, the thickness of junction veneer is the thickness of individual layer veneer after the glue laminated.But in actual production, the thickness of junction veneer can be greater than the thickness of individual layer veneer, because during making sheet, veneer is also wanted hot pressing, can also regulate the thickness of its whole sheet material between the veneer automatically, the compression ratio of junction veneer is decided on the thickness of veneer seeds, veneer, the method for attachment of veneer.Veneer junction compacting thickness should be with junction intensity, and be unlikely to conquassation and do not influence with the after dryer sizing operation to be as the criterion.
About the selection of glue, if impregnation, can adopt the low-molecular-weight resin glue of water-soluble or pure dissolubility; If double spread, can adopt the glue of coating technique requirement, also can adopt two kinds of glues to mix and use, the glue of macromolecule plays the connection effect on the veneer surface, and low-molecular-weight glue is distributed in veneer inside and plays fixed dimension.
This method adopts that overlap joint, dislocation mitered, overlap joint dock with overlap joint, rectangular teeth with mitered, mitered, stepped tooth docks and form such as lance tooth butt joint.The dislocation mitered guarantees the intensity of junction veneer so that increase pressure.
Little veneer through repeatedly connect assembly and repeatedly hot pressing become big veneer since the gummed veneer part area little, so can adopt quick hot pressing.Hot pressing connects into big veneer, can adopt the mode of veneer list or two-sided roller coat.If big veneer distortion is big, can adopt the mode of veneer list or double-face spray painting.
Veneer after the machining and shaping, the whole again veneer double spread of veneer junction impregnation, adopt the connection assembly of various ends after, tree lace is connected to become big veneer through punching several times.
Beneficial effect of the present invention: in wood-based plate (glued board, particieboard and medium-density plate), except that the level juggle of the big footpath of glued board palpus, consider that from aspects such as the quality of volume recovery, energy consumption, product and ranges of application single panel type sheet material (glued board and laminated veneer lumber) is the performance best material.
Adopt this technology can make full use of log: but the short or little rotary-cut high-quality log of footpath level; The quick growing species of trees of small diameter grade; The weedtree of small diameter grade in the raw material of production directional structure board (OSB), particieboard, medium density fibre board (MDF) (MDF).Particularly produce directional structure board (OSB), wafer board and flake board abroad, juggle footpath level generally at 10cm between the 20cm, have abundant raw, and the product of this production technology is much better than directional structure board (OSB), wafer board and flake board.
Not only be convenient to veneer by veneer end machining and shaping and connect assembly, and the more important thing is that the compression ratio of control veneer coupling part improves the intensity of veneer coupling part and the dimensionally stable of assurance veneer coupling part.
Adopt double spread or impregnation, purpose is by the glue amount that improves veneer and improves the distribution situation of glue in veneer, improves the intensity and the dimensional stability of veneer junction.After the hot pressing even be higher than the intensity of veneer itself, simultaneously glue plays the size of fixed connection place veneer in veneer inside, and during gluing, the veneer of junction can be because of imbibition once more, and be consistent with the veneer of other parts, can eliminate the folded heart and the air spots that causes.Impregnation is a kind of method that Wooden modifying improves intensity and dimensional stability.
Finishing by the veneer junction is the grinding and the milling of veneer junction, can guarantee the thickness of junction veneer and smooth.
Through repeatedly connect and repair after big veneer, on intensity and dimensional stability, can think from the big veneer of big footpath level juggle back-out, so utilization on the juggle length, the intensity of veneer junction, dimensional stability and planarization, the manufacturability of veneer method of attachment and the production that is suitable for serialization all than before veneer method of attachment have essence to improve.
Description of drawings of the present invention is as follows:
Fig. 1 is a thin veneer; Fig. 6, Fig. 7, Figure 10, Figure 13, Figure 16, Figure 19, Figure 22, Figure 25 are thick veneer, wherein Fig. 7 has been processed into the inclined-plane for thick veneer, Figure 10 is facet-inclined-plane, Figure 13 is inclined-plane-plane-inclined-plane, Figure 16 is vertical plane-plane-vertical plane, and Figure 19 is that rectangular teeth, Figure 22 are that stepped tooth, Figure 25 are lance tooth.
L1 is an impregnating glue of veneer length, and stain is represented the impregnation part of veneer among Fig. 2, Fig. 3, and among Fig. 2, the thick black matrix outline line in the L1 scope is the double spread layer; When L2 is the veneer termination, connect the length of gummed part, Fig. 3 and Fig. 8.
Fig. 3 is overlap joint, Fig. 4 is for after the overlap joint, be connected to become big veneer with tree lace through punching, Fig. 8 is inclined-plane dislocation mitered, and Figure 11 is overlap joint and mitered combination, and Figure 14 is mitered and overlap joint combination, Figure 17 is the combination of termination and overlap joint, Figure 20 is the rectangular teeth butt joint, and Figure 23 is the stepped tooth butt joint, and Figure 26 is the lance tooth butt joint.
Fig. 5, Fig. 9, Figure 12, Figure 15, Figure 18, Figure 21, Figure 24, Figure 27 be after the various connected mode hot pressing in conjunction with situation.
(4) scheme is specifically implemented
The small diameter grade log, but be generally short or the little rotary-cut high-quality log of footpath level; The quick growing species of trees of small diameter grade; Produce in the raw material of directional structure board (OSB), particieboard, medium density fibre board (MDF) (MDF), but the log of rotary-cut small diameter grade etc.
Rotary-cut generally can be adopted small diameter grade rounding machine, as rotary trunk-layer stripping machine without clamper.
Drying can adopt air dry or drying machine drying, and veneer drying is arrived necessarily required moisture content.
Shear, dried veneer can be cut into the certain specification size by its width (laterally).
Machining and shaping, for the ease of termination, the veneer end can machining and shaping, seeds according to veneer, material, density, thickness, whether definite ends such as the quality of quality of connection need to process certain shape: inclined-plane (Fig. 7), facet-inclined-plane (Figure 10), inclined-plane-plane-inclined-plane (Figure 13), vertical plane-plane-vertical plane (Figure 16), rectangular teeth (Figure 19), stepped tooth (Figure 22), lance tooth (Figure 25), size needs concrete and decides, but the thickness (h) at the plane in inclined-plane-plane-inclined-plane (Figure 13) and the vertical plane-plane-vertical plane (Figure 16) place must be greater than the veneer degree over half, to guarantee the intensity of veneer junction.Processing also can be placed on after the Veneer Cutting, before the drying, because this moment, veneer plasticity was good, is easy to machining and shaping.The coupling part of veneer must reach certain length, to guarantee the intensity of veneer coupling part.
Veneer connects applying glue, and during fullveneer unitization, if the veneer double spread of junction can not play fine fixation to the veneer of junction, the both sides resilience at veneer gummed place just is bigger, can adopt the impregnation mode.
In order to guarantee bonding strength, the length of impregnation or double spread (L1) (Fig. 3) must connect the length (L2) of gummed part greater than veneer, and the connection of other shape guaranteeing the bonding strength of junction, and is unlikely to the junction starved and ftractures too.
Drying is if the veneer double spread of junction can reach the gluing technique requirement as long as display a period of time; If adopt the impregnation mode, can adopt the method for heat drying, temperature is generally 90 ℃, and be that the water content requirement that reaches certain is as the criterion drying time, if drying is difficult, can adopt the glue of pure dissolubility.
Connect assembly, this method adopts overlap joint (Fig. 3), mitered (Fig. 8), overlap joint to dock (Figure 19), stepped tooth butt joint (Figure 23) and lance tooth butt joint forms such as (Figure 26) with combination (Figure 11), the mitered of mitered with combination (Figure 17), the rectangular teeth of overlap joint with combination (Figure 14), the termination of overlap joint.Chamfered portion dislocation (Fig. 8) to increase pressure, guarantees the intensity of junction veneer.
Hot pressing connects into big veneer, and little veneer is through connecting assembly several times and hot pressing several times becomes big veneer, because the veneer part area of gummed is little, so can adopt quick hot pressing.
Applying glue, hot pressing connect into big veneer, can adopt the mode of veneer list or two-sided roller coat.If big veneer distortion is big, can adopt the mode of veneer list or double-face spray painting.
Drying, the veneer drying after applying glue is to the requirement of moisture content (about 10%).
Assembly carries out assembly according to producing product, if glued board carries out assembly by the glued board form; If LVL carries out assembly by the LVL form.
Hot pressing adopts common production glued board or the heat pressing process of LVL to get final product.
Sheet material after the cutting edge, hot pressing, cutting edge is to specification.
If adopt tree lace to become big veneer in succession, veneer is through machining and shaping, the whole again veneer double spread of veneer junction impregnation, adopt the connection assembly of various ends after, tree lace is connected to become big veneer (Fig. 4), assembly hot pressing again, cutting edge through punching several times.
Embodiment
Whole change method of thick board using poplar board:
About the long 650mm of poplar juggle, be peeled into the thick veneer of 3.6mm, drying;
Rectangular teeth is processed in the end, concrete size such as Figure 19 and Figure 20;
Adopt phenolic resin glue, veneer junction impregnation, impregnation resin content about 20%, under 90 ℃, veneer drying is to moisture content about 10%, and rectangular teeth docks assembly such as Figure 20;
Hot compression parameters, 170 ℃ of hot pressing temperatures, the finger gauge control veneer junction thickness of 3.6mm, compression ratio is 31%, through three connections, the big veneer length of whole change is 2520mm (650 * 4-3 * 30).
Claims (2)
1. small diameter grade material mask-making technology, neat two ends, rotary-cut, shearing, the machining and shaping of veneer end, the veneer that comprises the small diameter grade juggle connects applying glue, veneer and connects assembly, hot pressing and connect into technical process such as finishing that big veneer or tree lace connect into big veneer, veneer junction, applying glue, assembly, hot pressing, cutting edge, and its characteristics are:
A, described small diameter grade material are that length is generally less than the Different Diameter level about 1.27m, the juggle of seeds.
The neat two ends of B, described small diameter grade juggle are to guarantee that limit, juggle two ends is straight and parallel, the machining and shaping of veneer end after being convenient to.
C, described rotary-cut are the rotary-cuts that length is generally less than the juggle of Different Diameter level about 1.27m, seeds.
The machining and shaping of D, described veneer end is situations such as the seeds, material, thickness according to veneer, and different shape shapes is processed in the end: inclined-plane, facet-inclined-plane, inclined-plane-plane-inclined-plane, vertical plane-plane-vertical plane, rectangular teeth, stepped tooth, lance tooth.
It is the mixing of veneer double spread or impregnation or the impregnation and the gluing of junction that E, described veneer connect applying glue, guarantees veneer junction intensity and dimensionally stable.
It is that veneer overlap joint, mitered, dislocation mitered, the overlap joint that connects docks with overlap joint, rectangular teeth with overlap joint, termination with mitered, mitered, stepped tooth docks, the type of attachment of lance tooth butt joint that F, described veneer connect assembly, guarantee veneer junction intensity and dimensionally stable, be unlikely to little cracking is arranged and influence bonding strength and next procedure.
It is that little veneer becomes big veneer through repeatedly connecting assembly and hot pressing that G, described hot pressing connect into big veneer, and the veneer junction more than this method more than 1 is arranged on the ply.
The finishing of H, described veneer junction is that grinding and milling can be carried out in the veneer junction, the thickness of the veneer of assurance junction and smooth.
It is veneer end machining and shaping, veneer junction impregnation and whole veneer double spread that I, described tree lace connect into big veneer, and after veneer connected assembly again, tree lace was connected to become big veneer through punching several times.
2. small diameter grade material mask-making technology according to claim 1, its characteristics are: can be used for veneer and vertically connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610092997 CN101088725A (en) | 2006-06-12 | 2006-06-12 | Process of producing plate with small size timber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610092997 CN101088725A (en) | 2006-06-12 | 2006-06-12 | Process of producing plate with small size timber |
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| CN101088725A true CN101088725A (en) | 2007-12-19 |
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| CN 200610092997 Pending CN101088725A (en) | 2006-06-12 | 2006-06-12 | Process of producing plate with small size timber |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103600382A (en) * | 2013-10-28 | 2014-02-26 | 黄山市永锦工艺品有限公司 | Production process for finger-jointed laminated wood boards |
| WO2014139473A1 (en) * | 2013-03-15 | 2014-09-18 | 江西省贵竹发展有限公司 | Method for manufacturing glue laminated bamboo material |
| CN107253242A (en) * | 2017-08-15 | 2017-10-17 | 李文帝 | A kind of preparation method of reinforced wooden core plate in the same direction |
| CN108326999A (en) * | 2017-12-26 | 2018-07-27 | 浙江凯森板业有限责任公司 | A kind of connector and its joining method of bamboo board |
| CN108621441A (en) * | 2017-03-17 | 2018-10-09 | 昆山艾诺美航天材料有限公司 | A kind of ultra-wide large scale PC plate material manufacture craft |
| CN109551579A (en) * | 2018-12-22 | 2019-04-02 | 南通月星家具制造有限公司 | A kind of wood board splicing structure and its processing technology |
| CN110883878A (en) * | 2019-11-25 | 2020-03-17 | 浙江云峰莫干山装饰建材有限公司 | Preparation method of novel recombined decorative veneer |
| CN114248319A (en) * | 2021-12-22 | 2022-03-29 | 江苏艾科赛特新材料有限公司 | Preparation method of formaldehyde-free thick-core plywood |
-
2006
- 2006-06-12 CN CN 200610092997 patent/CN101088725A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014139473A1 (en) * | 2013-03-15 | 2014-09-18 | 江西省贵竹发展有限公司 | Method for manufacturing glue laminated bamboo material |
| CN103600382A (en) * | 2013-10-28 | 2014-02-26 | 黄山市永锦工艺品有限公司 | Production process for finger-jointed laminated wood boards |
| CN108621441A (en) * | 2017-03-17 | 2018-10-09 | 昆山艾诺美航天材料有限公司 | A kind of ultra-wide large scale PC plate material manufacture craft |
| CN107253242A (en) * | 2017-08-15 | 2017-10-17 | 李文帝 | A kind of preparation method of reinforced wooden core plate in the same direction |
| CN108326999A (en) * | 2017-12-26 | 2018-07-27 | 浙江凯森板业有限责任公司 | A kind of connector and its joining method of bamboo board |
| CN109551579A (en) * | 2018-12-22 | 2019-04-02 | 南通月星家具制造有限公司 | A kind of wood board splicing structure and its processing technology |
| CN110883878A (en) * | 2019-11-25 | 2020-03-17 | 浙江云峰莫干山装饰建材有限公司 | Preparation method of novel recombined decorative veneer |
| CN110883878B (en) * | 2019-11-25 | 2021-08-17 | 浙江云峰莫干山装饰建材有限公司 | Method for preparing recombined decorative veneer |
| CN114248319A (en) * | 2021-12-22 | 2022-03-29 | 江苏艾科赛特新材料有限公司 | Preparation method of formaldehyde-free thick-core plywood |
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