CN111645164A - Novel wood shaving accumulated material for house beam and manufacturing process thereof - Google Patents
Novel wood shaving accumulated material for house beam and manufacturing process thereof Download PDFInfo
- Publication number
- CN111645164A CN111645164A CN202010474036.9A CN202010474036A CN111645164A CN 111645164 A CN111645164 A CN 111645164A CN 202010474036 A CN202010474036 A CN 202010474036A CN 111645164 A CN111645164 A CN 111645164A
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- China
- Prior art keywords
- wood
- shavings
- shaving
- accumulated material
- manufacturing process
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/02—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
- B27L11/02—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood shavings or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
- B27N1/02—Mixing the material with binding agent
- B27N1/0209—Methods, e.g. characterised by the composition of the agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
- B27N3/14—Distributing or orienting the particles or fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/20—Moulding or pressing characterised by using platen-presses
- B27N3/203—Moulding or pressing characterised by using platen-presses with heating or cooling means
Abstract
The invention provides a novel wood shaving accumulated material for house beams and a manufacturing process thereof, wherein the novel wood shaving accumulated material is prepared by producing long wood shavings with the thickness of 150-200 mm by using small diameter wood or branches as raw materials and carrying out processes of screening and winnowing of a series of wood shavings, glue mixing and applying, paving and prepressing, microwave heating, hot pressing and the like, the thickness range of the novel wood shaving accumulated material is 20-80 mm, and the density is 550-85 mm0kg/m3The mechanical property of the material can reach the strength grade standard of 15E-45 f. The invention provides a novel wood shaving accumulated material for a house beam, wherein wood shavings are paved in the same direction, so that the wood shavings have ultrahigh mechanical property in a certain direction, MDI (diphenylmethane diisocyanate) glue is selected in the aspect of selecting glue application, toxic formaldehyde is not contained, the influence on human health can be reduced, meanwhile, an intelligent continuous hot press is adopted, the automatic deviation rectifying capability is strong, each oil cylinder can be independently adjusted, and control software can select an optimal production process scheme according to historical data, so that the stability and the easiness in operation and control of the product quality are ensured.
Description
Technical Field
The invention belongs to the field of wood shaving accumulated material manufacturing, and particularly relates to a novel wood shaving accumulated material for a house beam and a manufacturing process thereof.
Background
A safe and firm house is the first guarantee for ensuring the safety of lives and properties of people, and factors influencing the quality and the shock resistance of the house are various, such as the selection of building places, the quality of building materials, whether the design of building personnel is reasonable and the like.
In the construction industry, a beam is the supporting roof structure, which is the main load-bearing part of the whole building. At present, the wooden house beam has the advantages of wide sources, strong operability and the like and is widely applied to houses for rural buildings to serve as houses for supporting the top. At present, wood beams are generally made of timber piles or laminated veneer lumber of original trees, and scar knots, cracks and the like easily exist in the original timber piles, so that the wood beams do not have the performances of insect prevention, corrosion prevention, water prevention, fire prevention and the like. The laminated veneer lumber, referred to as LVL board, is a board obtained by rotary cutting or slicing raw wood into veneers, drying, gluing and hot extruding, and has the advantages of high strength, high toughness, good stability and the like. However, the LVL plate has a certain limitation in the use of the house beam because the compression and stress of the LVL plate is uniform and there is no too high compression and bending strength in a certain direction. Therefore, the invention provides a long wood shaving accumulated material which can replace LVL plates, and the compression resistance and the bending resistance of the long wood shaving accumulated material can be used as a house beam.
Disclosure of Invention
The invention aims to overcome the technical defects in the prior art and provides a novel wood shaving accumulated material for house beams and a manufacturing process thereof, wherein the wood shaving accumulated material is prepared by taking small-diameter wood or branches as raw materials to produce 150-200 mm long wood shavings and then carrying out processes of screening and winnowing of the wood shavings, glue mixing and applying, paving and prepressing, microwave heating, hot pressing and the like.
In order to solve the technical problems, the invention provides the following technical scheme:
a long wood shaving layer laminated material comprises an upper layer structure and a lower layer structure, wherein shavings are longitudinally arranged, the lower layer shavings are longitudinally arranged from large to small, and the upper layer shavings are longitudinally arranged from small to large to form a three-layer structure with the larger upper layer shavings and the smaller middle layer shavings.
Preferably, the thickness of the novel wood shaving accumulated material ranges from 20 mm to 80mm, and the density is 550-3The mechanical property of the material can reach the strength grade standard of 15E-45 f.
Preferably, the manufacturing process comprises the following steps:
(1) preparation of wood shavings
(2) Drying the shavings
(3) Screening and winnowing method for wood shavings
(4) Mixing and gluing
(5) Paving prepressing
(6) Microwave heating
(7) Hot pressing
Preferably, the wood shavings are produced by a long wood chipper, the raw materials of the wood shavings surface layer, the subsurface layer and the core layer are all selected from small poplar diameter wood, branch wood with low density, and poplar leftover materials, sawdust and wood shavings generated in the production process of nearby plywood, laminated wood boards and particle board plants, the wood shavings are 150-200 mm in length, and the diameter of the raw materials is more than or equal to 30 mm.
Preferably, the screening and winnowing of the wood shavings are to screen the dried long wood shavings into three materials of oversize wood shavings, qualified wood shavings and crushed materials by a disc screen, and the qualified wood shavings are then removed from the oversize wood shavings and the non-wood materials by a winnowing machine.
Still further preferably, the paving pre-pressing comprises: the upper layer material and the lower layer material are longitudinally paved through two paving heads after aldehyde-free MDI glue is applied, wherein the upper layer longitudinally paves the wood shavings from small to large, the lower layer longitudinally paves the wood shavings from large to small to obtain a continuous slab with a three-layer structure, and the slab is subjected to a pre-press to discharge internal air and enable the slab to have certain initial strength.
Advantageous effects
The invention provides a novel wood shaving accumulated material for a house beam, and the accumulated material has ultrahigh mechanical property in a certain direction because wood shavings are paved in the same direction, and is suitable for the house beam and other special purposes.
The invention provides a novel wood shaving accumulated material for house beams, MDI type glue is selected in the aspect of selecting glue application, toxic formaldehyde is not contained, and the influence on the human health can be reduced.
Compared with the house beam material made of other materials, the novel wood shaving accumulated material for the house beam has the advantages of easiness in processing, difficulty in breaking, low cost and the like.
Drawings
Fig. 1 is a side view of the novel wood shaving material in the present embodiment.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, which are provided for illustration only and are not intended to limit the present invention.
Example 1
As shown in fig. 1, a new wood shaving material for house beam and its manufacturing process includes the following steps:
preparing wood shavings: the wood shavings are produced by a long-material chipper, the raw materials of the wood shavings surface layer, the subsurface layer and the core layer are all selected from small poplar diameter wood, brush wood with lower density and poplar leftover materials, sawdust and wood shavings generated in the production process of nearby plywood, laminated wood boards and particle board factories, the wood shavings are 150-200 mm in length, and the raw material diameter is more than or equal to 30 mm.
Drying the wood shavings: the wood shaving drying comprises a single-channel wet flue gas circulating drum dryer and a wet electrostatic dust removal system, the dried low-temperature wet flue gas (the water content is 34 percent and the temperature is 149 ℃) is mixed with the high-temperature hot flue gas (the temperature is 800 ℃) from an energy factory to form 550 ℃ water-containing hot flue gas to dry the wood shavings, the shrinkage and the breakage rate of the wood shavings are greatly reduced,
screening and winnowing of wood shavings: the dried long wood shavings are screened into three materials of oversize shavings, qualified shavings and crushed aggregates by a disc screen, and the qualified shavings are removed of the oversize shavings and the non-wood materials by a winnowing machine.
Mixing and sizing: the shavings were physically bonded by using MDI type glue.
Paving and prepressing: after the materials of the upper layer and the lower layer are glued, the materials are longitudinally paved through two paving heads, wherein the upper layer longitudinally paves the wood shavings from small to large, the lower layer longitudinally paves the wood shavings from large to small to obtain a continuous plate blank with a three-layer structure, and the plate blank discharges the internal air through a prepress and has certain initial strength.
Microwave heating: preheating the pre-pressed and edge-trimmed plate blank
Hot pressing: the ninth generation intelligent continuous hot press produced by Xinbei Kangpu group is adopted for hot pressing, the length of the press is 38.7m, the hot pressing temperature is 230-245 ℃, 220-230 ℃, 210-220 ℃, 200-210 ℃, 170-180 ℃, the hot pressing factor is 8.5-10.5 s/mm, the pressure is 1.6-1.8 MPa, 1.0-1.5 MPa, 0.8-1.0 MPa, 0.1-0.5 MPa and 0.8-1.2 MPa in sequence, hot pressing is carried out in five areas, 5 oil cylinders are arranged on each frame of the press, the pressure of each oil cylinder can be independently adjusted, the transverse density and thickness deviation of the produced product are small, and the quality is more stable.
The long wood shaving laminated material plain plate produced by the press is cut into 2500mm × 7500mm by a cross cutting saw, then is cooled to about 60 ℃ by a plate turnover machine, is stacked and is cured and tempered for about 48 hours by an intermediate storage area, and the cured plate is subjected to surface sanding to obtain a product with a smooth surface, wherein the thickness range of the novel shaving laminated material is 20-80 mm, and the density is 550-3The mechanical property of the material can reach the strength grade standard of 15E-45 f.
The long wood shaving laminated wood produced by the preparation process is detected according to the national standard of 'veneer laminated wood for GB/T36408-2018 Wood Structure', and the detection result is shown in the following table:
although the present invention has been described in detail with reference to the foregoing examples, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A novel wood shaving accumulated material for house beams and a manufacturing process thereof are characterized in that: the long wood shaving laminated material comprises an upper layer structure and a lower layer structure, wherein the shavings are longitudinally arranged, the lower layer shavings are longitudinally arranged from large to small, and the upper layer shavings are longitudinally arranged from small to large, so that a three-layer structure with the larger upper layer shavings and the smaller middle layer shavings is formed.
2. The novel wood shaving accumulated material for house beam as claimed in claim 1, wherein the thickness of the wood shaving accumulated material is in the range of 20-80 mm, and the density is 550-3The mechanical property of the material can reach the strength grade standard of 15E-45 f.
3. The new wood shaving product and the manufacturing process thereof according to claim 1, wherein the manufacturing process comprises the following steps:
(1) preparation of wood shavings
(2) Drying the shavings
(3) Screening and winnowing method for wood shavings
(4) Mixing and gluing
(5) Paving prepressing
(6) Microwave heating
(7) And (5) hot pressing.
4. The novel wood shaving accumulated material for house beams and the manufacturing process thereof as claimed in claim 3, wherein the wood shavings are produced by a long wood chipper, the raw materials of the surface layer, the subsurface layer and the core layer of the wood shavings are small-diameter poplar wood, branch wood, and poplar leftover material, sawdust and wood shavings generated in the production process of nearby plywood, laminated wood boards and particle board factories, wherein the wood shavings have a length of 150-200 mm, and the diameter of the raw materials is more than or equal to 30 mm.
5. The novel wood shaving accumulated material for house beams and the manufacturing process thereof as claimed in claim 3, wherein the wood shaving screening air is used for screening the dried long wood shavings into three materials of oversize shavings, qualified shavings and crushed aggregates by a disc screen, and the qualified shavings are then removed from the oversize shavings and the non-wood materials by a winnowing machine.
6. The new wood shaving accumulated material for house beam and the manufacturing process thereof as claimed in claim 3, wherein the paving pre-pressing comprises: the upper layer material and the lower layer material are longitudinally paved through two paving heads after aldehyde-free MDI glue is applied, wherein the upper layer longitudinally paves the wood shavings from small to large, the lower layer longitudinally paves the wood shavings from large to small to obtain a continuous slab with a three-layer structure, and the slab is subjected to a pre-press to discharge internal air and enable the slab to have certain initial strength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010474036.9A CN111645164A (en) | 2020-05-29 | 2020-05-29 | Novel wood shaving accumulated material for house beam and manufacturing process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010474036.9A CN111645164A (en) | 2020-05-29 | 2020-05-29 | Novel wood shaving accumulated material for house beam and manufacturing process thereof |
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| CN111645164A true CN111645164A (en) | 2020-09-11 |
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| CN202010474036.9A Pending CN111645164A (en) | 2020-05-29 | 2020-05-29 | Novel wood shaving accumulated material for house beam and manufacturing process thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113319962A (en) * | 2021-06-17 | 2021-08-31 | 河南佳诺威木业有限公司 | Control process for preventing large shaving damage of PB plate |
| CN114939916A (en) * | 2022-05-23 | 2022-08-26 | 广西科学院 | Microwave hot pressing method for manufacturing shaving board |
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| CN1785625A (en) * | 2005-10-25 | 2006-06-14 | 南京林业大学 | Manufacturing method of large piece wood shaving laminated material |
| CN101125436A (en) * | 2007-09-21 | 2008-02-20 | 沈阳重型机械集团有限责任公司 | Technology for producing wood wheat straw composite type directional structure board |
| CN103770187A (en) * | 2012-10-19 | 2014-05-07 | 北京泛欧瑞得科技有限公司 | Special type oriented strand board and manufacturing process thereof |
| EP3225370A1 (en) * | 2014-10-24 | 2017-10-04 | Dieffenbacher Machinery Services (Beijing) Co.,Ltd | Method and system for production of oriented structural shaving board |
| CN109262795A (en) * | 2018-11-05 | 2019-01-25 | 嘉木远景（北京）科技有限公司 | A kind of particieboard preparation method using microwave preheating |
| CN109624016A (en) * | 2018-12-20 | 2019-04-16 | 广西丰林木业集团股份有限公司 | A kind of superpower particieboard manufacturing process changing shaving shape structure |
| CN110091409A (en) * | 2019-06-06 | 2019-08-06 | 江苏慧典新材有限公司 | A kind of low-density can facing oriented wood chipboard |
-
2020
- 2020-05-29 CN CN202010474036.9A patent/CN111645164A/en active Pending
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| CN1785625A (en) * | 2005-10-25 | 2006-06-14 | 南京林业大学 | Manufacturing method of large piece wood shaving laminated material |
| CN101125436A (en) * | 2007-09-21 | 2008-02-20 | 沈阳重型机械集团有限责任公司 | Technology for producing wood wheat straw composite type directional structure board |
| CN103770187A (en) * | 2012-10-19 | 2014-05-07 | 北京泛欧瑞得科技有限公司 | Special type oriented strand board and manufacturing process thereof |
| EP3225370A1 (en) * | 2014-10-24 | 2017-10-04 | Dieffenbacher Machinery Services (Beijing) Co.,Ltd | Method and system for production of oriented structural shaving board |
| CN109262795A (en) * | 2018-11-05 | 2019-01-25 | 嘉木远景（北京）科技有限公司 | A kind of particieboard preparation method using microwave preheating |
| CN109624016A (en) * | 2018-12-20 | 2019-04-16 | 广西丰林木业集团股份有限公司 | A kind of superpower particieboard manufacturing process changing shaving shape structure |
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| 赵雨森等: "《林业概率》", 30 September 2004, 东北林业大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113319962A (en) * | 2021-06-17 | 2021-08-31 | 河南佳诺威木业有限公司 | Control process for preventing large shaving damage of PB plate |
| CN114939916A (en) * | 2022-05-23 | 2022-08-26 | 广西科学院 | Microwave hot pressing method for manufacturing shaving board |
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Application publication date: 20200911 |