CN106584629B - A kind of manufacturing process of Recombined bamboo - Google Patents
A kind of manufacturing process of Recombined bamboo Download PDFInfo
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- CN106584629B CN106584629B CN201611138488.XA CN201611138488A CN106584629B CN 106584629 B CN106584629 B CN 106584629B CN 201611138488 A CN201611138488 A CN 201611138488A CN 106584629 B CN106584629 B CN 106584629B
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- former material
- temperature
- manufacturing process
- recombined bamboo
- bamboo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27J—MECHANICAL WORKING OF CANE, CORK, OR SIMILAR MATERIALS
- B27J7/00—Mechanical working of tree or plant materials not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
- B27M1/02—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by compressing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
- B27M1/08—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by multi-step processes
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Forests & Forestry (AREA)
- Wood Science & Technology (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention discloses a kind of manufacturing process of Recombined bamboo, and former material is assembled into pile, include the following steps: that A. former material is dry, and former material is placed under negative pressure and is dried to moisture content lower than 15%；B. high temperature pyrolysis is warming up to 170 ~ 240 DEG C, is pyrolyzed the uprush for being 2 ~ 10m/s with formation wind speed in kiln, and is discharged by gas to keep isobaric inside and outside pyrolysis kiln, naturally isobaric inside and outside pyrolysis kiln；C. it impregnates；Former material is placed under negative pressure and dries to moisture content 7 ~ 15% by D. impregnation drying；E. it arranges, former material is arranged into bunchy, bear perpendicular to machine direction, when force direction is identical and size identical pressure, the difference of the thickness on single Shu Yuancai at each point of application is less than 5%；F. press curing.Have the characteristics that big former material utilization rate height, obtained Recombined bamboo square stock mechanical strength, high production efficiency, a yield are big.
Description
Technical field
The present invention relates to a kind of technical fields of the manufacturing process of wood-based product, and in particular to a kind of manufacture work of Recombined bamboo
Skill.
Background technique
Recombining bamboo is the artificial recombinant material to comb Xie Zhusi or bamboo sheet as raw material, will be obtained after bamboo wood peeling, comb solution
After the bamboo silk or bamboo sheet dipping adhesive that arrive, it is placed in mold, by pressure compression moulding, final high temperature consolidates adhesive system
At final square stock.The density of gained Recombined bamboo square stock is 1.5 ~ 1.8 times of common bamboo wood product, and mechanical strength is big, is suitable for
Manufacture, the processing of multiple product.Past Recombined bamboo production technology is a kind of heavy as disclosed in Chinese patent 20131058509.4
Prescription material manufacturing technique, comprising: dry bamboo sheet → impregnation → drying → cold moudling → solidification → demoulding → tack → forming material,
The forming material moisture content is 5-10%.However the recombination square stock stability that will be suppressed after the bamboo obtained after drying silk directly impregnation
It is bad, open air can not be suitable for, while impregnation resin content is lower, MOR the and SH(water absorption rate of product) poor.To solve this problem, specially
A kind of manufacture craft of heavy bamboo carbonized floor disclosed in benefit 201410278759.6, comprising the following steps: (1) choosing label: choose length
Degree, width, consistency of thickness bamboo stick；(2) it carbonizes: the bamboo stick level of selection being sent into hot press and carries out charing process；(3) it does
It is dry: the bamboo stick after charing to be dried, until average moisture content is down to 8% or less；(4) impregnation: by the bamboo stick after drying
It is taken out after being sent into the abundant impregnation of Jiao Chi；(5) dry, until the average moisture content of bamboo stick is down to 12%-18%；(6) it forges and presses；(7)
Cutting, fragment: one piece big floor is cut to conform to the small floor of size needs；(8) balance is stood: finished product floor being balanced quiet
It sets 7-10 days.By the way that bamboo silk is carried out charing process, the nutriment in bamboo silk decomposes volatilization, hydrophilic radical degradation, thus by
The stability of heavy bamboo square stock made of bamboo silk after charing process is improved, and is applicable to outdoor flooring, outdoor furniture
Production.Hot pressing charing is mainly used to the charing process of bamboo silk, the Temperature Treatment that 120 ~ 200 DEG C for the treatment of temperature 60 ~ 120 minutes,
Also have to tie up bamboo silk and pyrolysis processing is carried out by carbonization tank or carbonizing kiln after bunchy, two kinds of charing modes are each advantageous.However
In above-mentioned technical proposal bamboo silk or bamboo sheet loss is big, utilization rate is low.
Summary of the invention
Present invention aim to address the deficiencies in the prior art, to provide a kind of former material (bamboo silk or bamboo sheet)
The manufacturing process of the high Recombined bamboo of utilization rate.
Above-mentioned technical purpose of the invention has the technical scheme that a kind of manufacture work of Recombined bamboo
Former material is assembled into pile, included the following steps: by skill
A. the step of arranging；
B. the step of high temperature pyrolysis；
C. the step of impregnating；
D. dry step after impregnating, makes to generate negative pressure in dry place by suction and to be passed through hot wind described to improve
Gas temperature in space is to 50 ~ 80 DEG C, so that the former material in the space is dry to moisture content 7 ~ 15%；
E. the step of press curing.
In existing production process, the loss of non-processing drop of bamboo silk or bamboo sheet etc. is very big, long by inventor
Phase practice discovery produces largely since bamboo silk or bamboo chip material are easily broken, thus in the dismounting pile process of multiple tracks turnover process
Bamboo silk or bamboo sheet waste.In addition, such as in hot pressing charing process, due to being handled under stress, so that bamboo can be brought
A large amount of losses of silk；For another example in order to make pressed heavy bamboo material square stock even density, in selection and arranging process, need to select
Thickness or the uniform bamboo silk of thickness or bamboo sheet, partially thin or partially thin material are not available then；And in drying process, it is
Make the temperature uniformly silk of bamboo caused by the blower air blast of use or bamboo sheet breakage in dry kiln.
In the technical scheme, former material uses negative pressure drying, so that the air-flow in dry working space is by compensate
The hot wind drying working space air pressure and being inhaled into dry working space is formed, and avoids blower air blast to bamboo silk or bamboo sheet
Breakage.The dry working space is set there are two gas passage, and one is suction air flue, secondly being hot gas path, works as suction
When air flue aspirates the gas in the dry working space, negative pressure is generated in the dry working space, so that in hot gas path
Hot gas enter the dry working space in, it is this by suction so that the hot gas in hot gas path is constantly replaced the back tender
Make the gas in space, to form dry hot-air flow, since the air-flow of the hot wind is formed by air blast, thus keeps away
Impact of the air blast to bamboo silk or bamboo sheet is exempted from.Certain hot gas path can be drawn into naturally in dry working space,
It can also assist that hot wind is promoted to enter in dry working space with air blast.On the other hand, the former material of pile will be preferably assembled into
It is placed in the drying working space that soft material surrounds, when suction air flue is sucked and dried the gas in working space, moment is negative
Pressure makes soft material be affixed on former material surface, has further functioned as the protection to former material, reduces former material in the drying process
Material loss.
As a preferred embodiment of the above technical solution, it is aspirated on the top in the space and is passed through heat in the bottom in the space
Wind, or aspirated in the lower part in the space and be passed through hot wind at the top of the space.
Preferably, air flue will be aspirated to be set to hot gas path set on top or the top of the dry working space
Lower part or bottom, at this time when aspirate air flue work when, can in the dry working space the relatively high gas of formation temperature
To the uprush of uplink, hot wind bring thermal energy is made full use of, drying efficiency is improved.
As a preferred embodiment of the above technical solution, the step of arrangement be former material is arranged to bunchy, and bear it is identical
When pressure, the difference of the compacting thickness of each pressure spot is less than 5% on single Shu Yuancai.
In the technical scheme, the step of arrangement includes following sub-step:
Former material is placed in slot or on the platform with two sides backer by A1. the step of beam splitting, forms list Shu Yuancai；
A2. the step of detecting, by two or more cylinders or oil cylinder from the opening of slot to but Shu Yuancai on two
Or multiple points apply pressure, the amount of force on each point of application is identical, direction is identical, is each perpendicular to machine direction, preferably
Be perpendicular to slot or flat surface, under the compression of active force, the distance of the point of application to slot bottom or flat surface forms force point
The thickness of the single Shu Yuancai set checks the thickness deviation at the thickness and each point of application at each point of application；
A3. it arranges；Adjust the layout of former material；Recycle list Shu Yuancai at sub-step A1 and sub-step A2 to each point of application
The difference of thickness is less than 3 ~ 5%.
The arrangement step being different from the prior art is only to select thickness or the identical or close material of other specifications parameters
Former material is first organized into single beam, to the pressure for imposing the same direction on single Shu Yuancai, applied by material, the arrangement step of the technical program
Power direction perpendicular to but Shu Yuancai machine direction and each point of application on pressure it is identical, at this time on list Shu Yuancai bear pressure at
It is extruded into densification, checks compressed thickness at each receiving pressure at this time, the manufactured recombination if the difference of thickness is less than 5%
Each point density contrast while the density uniformity of Recombined bamboo square stock that ensure that the technical program, is mentioned less than 3% on bamboo square stock
High the bamboo silk of former material or the utilization rate of bamboo sheet, the bamboo silk or bamboo sheet of various specifications can be efficiently used, be avoided
The waste of former material.
As a preferred embodiment of the above technical solution, the step of press curing is to obtain step dry after the dipping
The former material be placed in molding die, room temperature extrusion forming after by with mold former material carry out thermosetting processing.
In the technical scheme, the step of step press curing includes following sub-step,
E1. the list Shu Yuancai arranged in step E is placed in molding die；
E2. room temperature is press-formed；
E3. loading of kiln；
E4. thermosetting is carried out in thermosetting kiln.
The adhesive consolidation technique being different from the prior art, since Recombined bamboo uses Thermosetting adhesive, thus in impregnation
It needing to be placed under hot environment after drying and heat cure is carried out to adhesive, the consolidation technique of the prior art mostly uses forging and stamping to solidify,
Former material after impregnation drying is placed on forging press, forging and forming, the molding and heating of former material carry out simultaneously.This technology side
The press curing of case be first with room temperature compacting single Shu Yuancai is made design specification and density profile, then will molding after
Single Shu Yuancai be fitted into thermosetting kiln together with mold, heat thermosetting kiln in gas temperature, to molding list Shu Yuancai progress high temperature
Solidification.The step of press curing is actually divided into two big stages as a result, i.e., first carries out room temperature pressurization sizing to former material, with
Carry out high-temperature concretion again afterwards, the thermosetting needs carried out in thermosetting kiln carry out under steam protection, thus the Recombined bamboo after consolidation
The intensity of square stock is greater than forging and forming or solidifies the square stock of curing molding in tunnel.In addition, quickly room temperature pressurization, subsequent loading of kiln
Heating consolidation, significantly improves production efficiency.
As a preferred embodiment of the above technical solution, the briquetting pressure of the sub-step F2. room temperature extrusion forming is 2 ~ 6MPa, is protected
The pressure time is 20 ~ 40min.
As a preferred embodiment of the above technical solution, the sub-step F4. thermosetting be 130 ~ 150 DEG C at a temperature of, heat preservation 10 ~
15h, subsequent health obtain square stock.
As a preferred embodiment of the above technical solution, the step of high temperature pyrolysis includes temperature-rise period and insulating process, described
Temperature-rise period is the treatment temperature that temperature is risen to 170 ~ 220 DEG C；The adjoint wind speed that formed is 2 ~ 10m/s's in the temperature-rise period
Uprush；It keeps being in normal pressure state in kiln by being vented naturally in the temperature-rise period and the insulating process, until without row
Terminate the insulating process when gas.
Meanwhile the step of drying of former material used by the technical program, arrangement, high temperature pyrolysis, dipping and impregnation drying, exists
It after initial load is at pile, is had enough to meet the need between each process with heap stacking, fills pile without de-stacking and again, avoided when being had enough to meet the need between process
The breakage caused by bamboo silk or bamboo sheet.It is additional, compared to hot pressing charing, bamboo silk and bamboo chip that the pyrolysis of kiln formula preferably avoids
The breakage of material.
In conclusion a kind of manufacturing process of Recombined bamboo of the technical program includes
(1) former material utilization rate is high, reduces former material because of breakage in the turnover, drying process, arrangement step between process
The waste material of generation；
(2) the Recombined bamboo square stock mechanical strength obtained by is big；
(3) high production efficiency, one time yield is big.
Specific embodiment
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Embodiment: a kind of manufacturing process of Recombined bamboo, with raw bamboo peeling, boiling, comb solution after obtain bamboo silk or bamboo sheet be
Recombined bamboo square stock is made by following step in former material:
The impregnation drying of the present embodiment is placed in former material in negative pressure drying room, and the negative pressure drying room is empty as dry work
Between, negative pressure drying room includes the enclosure space that the soft weather screen of roof, substrate and four sides is formed, and is closed using soft weather screen negative
Press drying shed after, offered on roof with suction air flue connection section be rectangle pump orifice, offered in substrate with
The section of hot gas path connection is rectangle hot-air mouth；Pipeline section shape and the area for aspirating air flue are identical as pump orifice, hot gas
The pipeline section shape and area in channel are identical as hot-air mouth；The suction air flue other end is connect with a blower, which is suction
The power source of air flue；The other end of hot gas path is connect with boiler, is passed through in negative pressure drying room with the hot wind for guiding boiler to generate.
Former material is placed in iron frame, former material unit is formed；Former material unit is placed in negative pressure drying room, in the present embodiment, iron
The section of matter frame is consistent with the cross sectional shape on roof and substrate and area is identical, and load it is good after, bamboo silk or bamboo sheet
Fiber is in vertical, i.e. the vertical roof of machine direction or substrate.
In the present embodiment, suction air flue using centrifugal fan as power source, mended using unpowered type by hot gas path
Pressure, the area of pump orifice and hot-air mouth (aspirating the pipeline section of air flue and hot gas path) should meet following formula at this time:
(3375 ~ 5250) * (A/B)=(4.2 ~ 6.6) * 106P
Wherein A- aspirates open area (㎡), B- hot wind open area (㎡), P- power of fan (KW).
Claims (6)
1. a kind of manufacturing process of Recombined bamboo, include the steps that arranging, high temperature pyrolysis the step of, dipping the step of, do after dipping
The step of dry step and press curing；It is characterized by: step dry after the dipping is to make dry sky by suction
Between middle generation negative pressure and be passed through hot wind to improve the gas temperature in the space to 50 ~ 80 DEG C, thus by the space
Former material is dry to moisture content 7 ~ 15%；The step of arrangement is that former material is arranged to bunchy, single and when bearing identical pressure
The difference of the compacting thickness of the upper each pressure spot of Shu Yuancai is less than 5%.
2. a kind of manufacturing process of Recombined bamboo according to claim 1, it is characterised in that: aspirated on the top in the space
And it is passed through hot wind in the bottom in the space, or aspirate in the lower part in the space and be passed through hot wind at the top of the space.
3. a kind of manufacturing process of Recombined bamboo according to claim 1, it is characterised in that: the step of press curing is
The former material that step dry after the dipping obtains is placed in molding die, by the original with mold after room temperature extrusion forming
Material carries out thermosetting processing.
4. a kind of manufacturing process of Recombined bamboo according to claim 3, it is characterised in that: room temperature extrusion forming pressure be
2~6MPa。
5. a kind of manufacturing process of Recombined bamboo according to claim 3, it is characterised in that: thermosetting processing treatment temperature be
130 ~ 150 DEG C, the processing time is 10 ~ 15h, subsequent cooling and demolding.
6. a kind of manufacturing process of Recombined bamboo according to claim 1, it is characterised in that: the step of high temperature pyrolysis wraps
Temperature-rise period and insulating process are included, the temperature-rise period is the treatment temperature that temperature is risen to 170 ~ 220 DEG C；The temperature-rise period
In with formed wind speed be 2 ~ 10m/s uprush；It is protected in the temperature-rise period and the insulating process by being vented naturally
It holds in normal pressure state in kiln, until terminating the insulating process when without exhaust.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611138488.XA CN106584629B (en) | 2016-12-12 | 2016-12-12 | A kind of manufacturing process of Recombined bamboo |
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| CN201611138488.XA CN106584629B (en) | 2016-12-12 | 2016-12-12 | A kind of manufacturing process of Recombined bamboo |
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| CN106584629A CN106584629A (en) | 2017-04-26 |
| CN106584629B true CN106584629B (en) | 2019-01-11 |
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| CN101259631A (en) * | 2008-04-18 | 2008-09-10 | 杭州大庄地板有限公司 | Bamboo recombination sectional material and manufacturing method thereof |
| KR100927170B1 (en) * | 2009-06-18 | 2009-11-18 | 이청재 | Compressed board and its manufacturing method |
| CN102756418A (en) * | 2011-04-27 | 2012-10-31 | 浙江农林大学 | Method for improving stability of recombinant bamboo wood |
| CN103105048A (en) * | 2012-11-15 | 2013-05-15 | 昆山市大金机械设备厂 | Industrial oven |
| CN202984036U (en) * | 2012-12-28 | 2013-06-12 | 胡春江 | Improved baking oven heat exchange device |
| CN203629240U (en) * | 2013-12-16 | 2014-06-04 | 无锡龙派机械科技有限公司 | Conveying belt type drying system |
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2016
- 2016-12-12 CN CN201611138488.XA patent/CN106584629B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2823945Y (en) * | 2005-06-01 | 2006-10-04 | 周晨曦 | Air drying house |
| CN101259631A (en) * | 2008-04-18 | 2008-09-10 | 杭州大庄地板有限公司 | Bamboo recombination sectional material and manufacturing method thereof |
| KR100927170B1 (en) * | 2009-06-18 | 2009-11-18 | 이청재 | Compressed board and its manufacturing method |
| CN102756418A (en) * | 2011-04-27 | 2012-10-31 | 浙江农林大学 | Method for improving stability of recombinant bamboo wood |
| CN103105048A (en) * | 2012-11-15 | 2013-05-15 | 昆山市大金机械设备厂 | Industrial oven |
| CN202984036U (en) * | 2012-12-28 | 2013-06-12 | 胡春江 | Improved baking oven heat exchange device |
| CN203629240U (en) * | 2013-12-16 | 2014-06-04 | 无锡龙派机械科技有限公司 | Conveying belt type drying system |
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| CN106584629A (en) | 2017-04-26 |
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Address after: Tian Huang Ping Zhen Bai Shui Wan Cun, Anji County, Huzhou City, Zhejiang Province 313000 Patentee after: ANJI QICHEN BAMBOO INDUSTRY Co.,Ltd. Patentee after: Changxing Jingwei New Material Co.,Ltd. Address before: 313000 Anji Qichen Bamboo Industry Co., Ltd., baishuiwan village, Tianhuangping Town, Anji County, Huzhou City, Zhejiang Province Patentee before: ANJI QICHEN BAMBOO INDUSTRY Co.,Ltd. Patentee before: CHANGXING JINGWEI BAMBOO PRODUCTS Co.,Ltd. |