CN102717412A - Equal-negative-pressure veneering and forming method for bamboo and wood products - Google Patents
Equal-negative-pressure veneering and forming method for bamboo and wood products Download PDFInfo
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- CN102717412A CN102717412A CN2012102395887A CN201210239588A CN102717412A CN 102717412 A CN102717412 A CN 102717412A CN 2012102395887 A CN2012102395887 A CN 2012102395887A CN 201210239588 A CN201210239588 A CN 201210239588A CN 102717412 A CN102717412 A CN 102717412A
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Abstract
The invention discloses an equal-negative-pressure veneering and forming method for bamboo and wood products. The technical scheme is as follows: the equal-negative-pressure veneering and forming method comprises the following steps of: placing a product in a vacuum compression bag, tensioning a sealing port, and pumping air in the vacuum compression bag by a vacuumizer to generate negative pressure; then, standing and maintaining the pressure; and drying an adhesive, curing and forming. The concrete process flow comprises blanking, gluing, veneering, curing, pressure releasing and detecting. In addition, a semi-finished product can be vacuumized in the vacuum compression bag and then placed in a pressure container for pressurization, so that the six surfaces of the semi-finished product can be pressurized to ensure that the fastening stress is more uniform. Bamboo and wood technical products produced by using the method are not influenced along with the change of the temperature and the humidity of the external environment and cannot deform due to dampness or cause shrinkage cracking. By using the method, phenomena, such as degluing, gaps and malposition, caused by nonuniformity in stress and temperature and humidity change generated by using the traditional method in the veneering and fastening processes of the bamboo and wood technical products can be avoided, the finished product rate of the products can be increased, the processing time can be shortened, the energy source can be saved, and the economic benefits of enterprises can be increased.
Description
Technical field
The present invention relates to manufacture the handicraft fastening glue synthesis type process of timber, bamboo wood, plastics sheet material, specifically refer to a kind of bamboo and wood products etc. the negative pressure glue molding method.
Background technology
At present, the chamber class handicraft product forming technique of materials such as known timber, bamboo wood, plastic cement, mostly be through carpenter's cutting processing, the assembling gluing adhesion-molded after fastening forming.In the gummed process, adopt traditional fastener meanses such as mechanical presses, high frequency heat seal and winding rubber band usually.Adopt not only time-consuming, the effort of these traditional fastening methods, and product when fastening because each face is stressed irregular, as easy as rolling off a logly cause phenomenons such as gummed place dislocation, bonding seam be not tight.And since when gummed assembling glue curing need certain hour, product solidifies under normal conditions and leaves standstill pressurize and can change and be out of shape along with temperature, the humidity of surrounding air again.Such as reaching 65% when air humidity when above, timber, bamboo wood can the moisture absorption expand, thereby can impel its distortion; And when air humidity 45% when following, timber, bamboo wood again can be therefore and drying shrinkage not only can produce the slit in the bonding place, and therefore product is scrapped when serious.To above-mentioned various reasons; The applicant is through test of many times; Worked out a kind of novel vacuum compression fastening method, thereby solved the bamboo wood board handicraft product because stressed irregular, temperature, humidity change and coming unstuck of producing, slit, dislocation, a difficult problem such as dry and cracked.
Summary of the invention
The objective of the invention is: can be in the fastening process of gummed to timber, bamboo wood class handicraft product because of stressed irregular for overcoming traditional diamond-making technique; Temperature, humidity change and phenomenons such as coming unstuck of producing, slit, dislocation; Pay attention to improve the product qualified rate of timber, bamboo wood class handicraft product simultaneously and shorten process time, energy savings and increasing economic efficiency.
The technical scheme that the inventive method adopted is: a kind of bamboo and wood products etc. the negative pressure glue molding method; Be that the semi-finished product that will assemble after gluing together are put into vacuum compression bag; The tension seal; Utilize vavuum pump that the air in the compressed bag is pumped and produce negative pressure, leave standstill the forming method that pressurize impels the adhesive dry solidification then.Its concrete technical process is following:
Blanking: according to the product design size, choose the sheet material of suitable thickness, and become each plate according to product required form cutting;
Gluing; The surperficial coated with adhesive at the gummed place of cutting plate, gluing wants thickness even;
Gummed: the coated face of corresponding plate is closed up moulding relatively, and around tie up with rubber band or adhesive tape or cotton rope;
Solidify: the semi-finished product after above-mentioned the tying up are put into special-purpose vacuum compression bag; Behind the tension seal vavuum pump suction pipe is inserted the valve port of holding one's breath; The open vacuum pump is bled from vacuum compression bag outward; Stop to bleed after air pumps in bag, left standstill then 30～120 minutes, treat its air dry, curing;
Pressure release: open gas check valve and discharge vacuum,, open vacuum bag then product is taken out until internal and external pressure balance;
Check: remove rubber band or adhesive tape or the cotton rope of tying up earlier, watch the product appearance state simultaneously and test.
Can take high frequency heat seal simultaneously in case of necessity; Or the vacuum compression bag of sealed after being vacuumized put into pressure vessel, and and in pressure vessel, charge into compressed air and leave standstill pressurize, make that vacuum compression bag is inside and outside to produce bigger pressure differential; Its effect is better, and is dry, curing rate is faster.
The semi-finished product that the invention has the beneficial effects as follows bamboo wood board class handicraft product can six pressurizeds in the vacuum state of vacuum compression bag, promptly be waits under the condition of negative pressure even stressed fastening, so the distortion that can not misplace.And because product does not receive temperature, the humidity effect of external environment, the distortion of can not making moist, moist cracking is so can produce under any environmental condition.Owing to vacuumize, can impel adhesive solvent or moisture to accelerate volatilization in addition, therefore can shorten hardening time, enhance productivity.
Description of drawings
Fig. 1 is the technical process sketch map of the inventive method;
Fig. 2 is the view that vacuumizes of the inventive method;
Fig. 3 is the used vacuum compression bag reference view of the present invention;
Each several part title and numbering: 1-sealing draws mouth, 2-to draw a mouthful clip, 3-vacuum compression bag, 4-gas check valve, 5-semi-finished product among Fig. 3.
The specific embodiment
The present invention be a kind of bamboo and wood products etc. the negative pressure glue molding method; Promptly be that the semi-finished product 5 behind the assembling gummed are put into vacuum compression bag 3; With drawing the 2 tension sealings of mouthful clip to draw mouth 1, through gas check valve 4 air in the vacuum compression bag 3 is pumped earlier, make and produce negative pressure in the bag with vavuum pump; Leave standstill pressurize then and treat the forming method of adhesive solidification, concrete technical process is following:
Blanking: according to the product design size, choose the sheet material of suitable thickness, become each plate, and plane into plane, gummed place smooth, smooth according to product required form cutting;
Gluing: the surperficial coated with adhesive at the gummed place of plate, gluing are wanted thickness evenly [referring to (a) among Fig. 1];
Gummed: the coated face of corresponding plate is closed up moulding relatively, and around tie up [in referring to Fig. 1 (b)] with rubber band or adhesive tape or cotton rope;
Solidify: the semi-finished product after above-mentioned the tying up are put into special-purpose vacuum compression bag; Behind the tension seal vavuum pump suction pipe is inserted the valve port of holding one's breath; The open vacuum pump is bled from vacuum compression bag outward; After air pumps in the bag, stop to bleed, left standstill then 30～120 minutes, treat its air dry, curing [referring to (c)～(e) and Fig. 3 among Fig. 1];
Pressure release: open vacuum in the gas check valve release bag,, open vacuum compression bag then product is taken out until the bag internal and external pressure balance;
Check: remove being banded in product rubber band or adhesive tape or cotton rope all around earlier, watch the finished product apparent condition simultaneously and test.
Sometimes in order to accelerate curing rate, can in pressurize, impose high frequency heat seal again, or the vacuum compression bag of sealed after being vacuumized is put into pressure vessel, and in pressure vessel, charge into compressed air and leave standstill pressurize.
The inventive method is through repeatedly experiment, and obviously shorten hardening time, and product qualified rate can reach more than 98%.
Claims (2)
- A bamboo and wood products etc. the negative pressure glue molding method; The semi-finished product that it is characterized in that assembling behind the gummed are put into vacuum compression bag; The tension seal; Utilize vavuum pump that the air in the vacuum compression bag is pumped and produce negative pressure, leave standstill the forming method that pressurize impels the adhesive dry solidification then, concrete technical process is following:1) blanking: according to the product design size, choose the sheet material of suitable thickness, and become each plate according to product required form cutting;2) gluing; The surperficial coated with adhesive at the gummed place of plate, gluing wants thickness even;3) gummed: the coated face of corresponding plate is closed up moulding relatively, and around tie up with rubber band or adhesive tape or cotton rope;4) solidify: the semi-finished product after above-mentioned the tying up are put into special-purpose vacuum compression bag; Behind the tension seal vavuum pump suction pipe is inserted the valve port of holding one's breath; The open vacuum pump is bled from vacuum compression bag outward; After air pumps in the bag, stop to bleed, left standstill then 30～120 minutes, treat its air dry, curing;5) pressure release: open gas check valve and discharge vacuum,, open vacuum bag then product is taken out until internal and external pressure balance;6) check: remove rubber band or adhesive tape or the cotton rope of tying up earlier, watch the product appearance state simultaneously and test.
- A kind of bamboo and wood products as claimed in claim 1 etc. the negative pressure glue molding method; It is characterized in that to adopt high frequency heat seal simultaneously in case of necessity; The vacuum compression bag of back sealing of maybe will bleeding is put into pressure vessel, and in pressure vessel, charges into compressed air and leave standstill pressurize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102395887A CN102717412A (en) | 2012-07-06 | 2012-07-06 | Equal-negative-pressure veneering and forming method for bamboo and wood products |
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| CN2012102395887A CN102717412A (en) | 2012-07-06 | 2012-07-06 | Equal-negative-pressure veneering and forming method for bamboo and wood products |
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| CN102717412A true CN102717412A (en) | 2012-10-10 |
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| CN2012102395887A Pending CN102717412A (en) | 2012-07-06 | 2012-07-06 | Equal-negative-pressure veneering and forming method for bamboo and wood products |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103042577A (en) * | 2013-01-04 | 2013-04-17 | 太仓锦阳宝船建造有限公司 | Laminating process for the outermost layer of wood of yacht |
| CN104400869A (en) * | 2014-10-20 | 2015-03-11 | 湖州南浔恒峰家居科技有限公司 | Vacuum modified weedtree composite wooden door and processing method thereof |
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| US3948708A (en) * | 1973-03-26 | 1976-04-06 | Van Dresser Corporation | Method of forming a panel |
| DE4130620A1 (en) * | 1991-09-14 | 1993-03-25 | Eurocopter Deutschland | Bending process for shaping flat honeycomb layer - includes vacuum holding film-covered layer on flat bendable plate and second film covering over first, aids vacuum drawing into curved cavity |
| JPH07186261A (en) * | 1993-12-27 | 1995-07-25 | Sumitomo Bakelite Co Ltd | Fabrication method with roller |
| CN1325793A (en) * | 2000-05-28 | 2001-12-12 | 徐林波 | Technology for filming shaped surface of material |
| CN101446063A (en) * | 2008-12-29 | 2009-06-03 | 南京工业大学 | Bridge faceplate and preparation method thereof |
| CN101885249A (en) * | 2009-05-14 | 2010-11-17 | 北京中铁长龙新型复合材料有限公司 | Novel sandwich composite plate and preparation method thereof |
| CN102380901A (en) * | 2010-08-30 | 2012-03-21 | 珠海先歌游艇制造有限公司 | Vacuum molding process for furniture |
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2012
- 2012-07-06 CN CN2012102395887A patent/CN102717412A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3948708A (en) * | 1973-03-26 | 1976-04-06 | Van Dresser Corporation | Method of forming a panel |
| DE4130620A1 (en) * | 1991-09-14 | 1993-03-25 | Eurocopter Deutschland | Bending process for shaping flat honeycomb layer - includes vacuum holding film-covered layer on flat bendable plate and second film covering over first, aids vacuum drawing into curved cavity |
| JPH07186261A (en) * | 1993-12-27 | 1995-07-25 | Sumitomo Bakelite Co Ltd | Fabrication method with roller |
| CN1325793A (en) * | 2000-05-28 | 2001-12-12 | 徐林波 | Technology for filming shaped surface of material |
| CN101446063A (en) * | 2008-12-29 | 2009-06-03 | 南京工业大学 | Bridge faceplate and preparation method thereof |
| CN101885249A (en) * | 2009-05-14 | 2010-11-17 | 北京中铁长龙新型复合材料有限公司 | Novel sandwich composite plate and preparation method thereof |
| CN102380901A (en) * | 2010-08-30 | 2012-03-21 | 珠海先歌游艇制造有限公司 | Vacuum molding process for furniture |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103042577A (en) * | 2013-01-04 | 2013-04-17 | 太仓锦阳宝船建造有限公司 | Laminating process for the outermost layer of wood of yacht |
| CN104400869A (en) * | 2014-10-20 | 2015-03-11 | 湖州南浔恒峰家居科技有限公司 | Vacuum modified weedtree composite wooden door and processing method thereof |
| CN104400869B (en) * | 2014-10-20 | 2017-02-15 | 湖州南浔恒峰家居科技有限公司 | Vacuum modified weedtree composite wooden door and processing method thereof |
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Application publication date: 20121010 |