CN103413541B - A kind of carbon fibre reinforced composite makes the method for guitar - Google Patents
A kind of carbon fibre reinforced composite makes the method for guitar Download PDFInfo
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- CN103413541B CN103413541B CN201310387616.4A CN201310387616A CN103413541B CN 103413541 B CN103413541 B CN 103413541B CN 201310387616 A CN201310387616 A CN 201310387616A CN 103413541 B CN103413541 B CN 103413541B
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Abstract
Carbon fibre reinforced composite makes the method for guitar, utilize that carbon fibre composite intensity is large, modulus is high, quality gently, not yielding, designability and the good advantage of processability, the Principles of Acoustics of simultaneously imitating timber make carbon fiber guitar.This carbon fiber guitar body selects domestic carbon fibre and a small amount of glass to carry out compound, is characterized in being no lack of flexibility on firm basis, allows carbon fiber guitar produce melodious beautiful tonequality; Timber Principles of Acoustics copied by the panel of guitar and backboard, adopt different structural designs, and carry out reinforcement solutions for bottom neck and qin case, have tone color grace, indeformable, do not make moist, the feature such as do not ftracture, to thoroughly overturn traditional instrument industry, guitar is shone new brilliance, opens a new road to the making of musical instrument.
Description
Technical field
The present invention relates to a kind of method for making of guitar, particularly a kind of method of carbon fiber and glass produced with combination guitar.
Background technology
In guitar family, the classical guitar of " noble " and violin, piano are listed as world-renowned three large musical instruments.Guitar is used to multiple music style, as pop music, rock music, Blues, folk song, Fu Lamenge etc.Guitar mainly contains two large classes: one is wooden guitar that is with a long history, that amplify with wooden resonant tank; Two is electric guitars that twentieth century is invented, amplified with bullhorn.Wood guitar is normally used for classical music, folk music and pop music.Electric guitar is then normally used for rock music, Blues and pop music.The material mainly famous and precious timber of high-quality of traditional fabrication guitar, as Ying Geman " kahikatea " (panel), Brazil and " rose wood " (backboard) of India, ebony (fingerboard), mahogany and Spain Korean pine (neck) etc.The material require of high-grade guitar is selected under Different climate condition, in the different timber of different regions growth, some name qin materials to be placed in after selected ventilate bright cool place's natural drying many decades so that on century-old, water content requirement is completely lower than 3%.High-grade guitar is all through quite fastidious Design and material retrofit, therefore especially easily injured, so will meticulously maintain, can not make moist, is out of shape, ftractures, otherwise will affect the serviceable life of guitar, the serious tonequality also affecting guitar and audio.Along with people's quality of life and living standard more and more higher, consumption and the class of guitar also rise thereupon, the environmental consciousness of adding people strengthens, and high-grade timber picture Brazil " rose wood " and mahogany are listed in endangered species, and high-grade timber is more and more deficienter as can be seen here.
Summary of the invention
The technical problem to be solved in the present invention is for the deficiencies in the prior art, proposes a kind of method that carbon fibre reinforced composite makes guitar.There is sound grace, environmental protection, indeformable, resistance toly to go mouldy, indehiscent feature.
The technical problem to be solved in the present invention is achieved through the following technical solutions, and a kind of carbon fibre reinforced composite makes the method for guitar, is characterized in:
Mould is selected.Select pyroceram steel mold, quality is light, and efficiency is high, labor strength is low.Mould must meet the following conditions:
1. mould must meet intensity high, be out of shape the requirements such as little, size is accurate;
2. mould must meet lightweight, and operative is convenient, and practicality is high.
Mould prepares: the first step, dabs off dust and the oil stain of die surface with the cloth of soft material; Second step, waxes to whole mould, and waxing is wanted evenly, and at least 2-4 limit (being convenient to the demoulding); 3rd step, uniform spray one deck epoxy resin on the mould accomplishing fluently wax, natural air drying (observe at any time and can not parch), keeps for subsequent use.
Material selection
1. reinforcing material: select shock resistance, wellability is good, fiber cloth, continuous felt, knittingly shortly cuts felt, composite felt etc.We select 3K carbon fiber twill weave cloth, 12K carbon fiber one-way and plain weave woven cloth, CW140 glass plain weave cloth and sandwich material (PVC foam core, cork wood sandwich, composite felt etc.); Its specification is 100-400g/m2;
2. injecting glue resin: select the resin that low viscosity, lower shrinkage, wellability are good.The present invention selects the epoxy resin-bisphenol A type epoxy resin (or normal temperature resin) of good fluidity; Its viscosity is between 200-600mPa.S; The epoxide number of epoxy resin, at 0.3-0.5, is characterized in existing necessarily pliable and tough, has again good rigidity.
Moulding process is selected: vacuum aided injection molding technique or RTM (ResinTransferMolding) injection molding technique.
Concrete method for making is as follows:
(1) panel and the scroll head cover plate of guitar is first manufactured:
1) laying
1. prepare before laying: the first step, dabs off dust and the oil stain of die surface with the cloth of soft material; Second step, waxes to whole mould, and waxing is wanted evenly, and at least 2-4 time; 3rd step, uniform spray one deck epoxy resin on the mould accomplishing fluently wax, natural air drying; Start when epoxy resin is just tack-free to carry out laying;
2. first on panel mold along guitar qin case direction, paving shape is the same with panel-shaped, then prolongs the carbon fiber twill weave cloth of limit amplification 20-50mm width; This layer material thickness 0.20mm;
3. spread second and third layer: spreading on ground floor cloth, spray one deck glue, then the same with panel-shaped along guitar qin case direction paving shape, amplify the carbon fiber one-way woven cloth of 20-50mm width with time delay limit; Continuous paving is two-layer, and glue spraying water is bonding between layers; This is two-layer is 0 ° of direction, and namely carbon filament direction is identical with qin case direction; This materials at two layers thickness 0.4mm;
4. spread the 4th layer: spreading on third layer cloth, spray one deck glue, then the same with panel-shaped along guitar qin case direction paving shape, reduce the glass plain weave cloth of 20mm width with time delay limit, this layer material thickness 0.15mm;
5. spreading layer 5: having spread on the 4th layer of cloth, spray one deck glue, then the same with panel-shaped along guitar qin case direction paving shape, reducing the glass plain weave cloth of 40mm width with time delay limit, this layer material thickness 0.15mm;
6. spread layer 6: spreading on layer 5 cloth, spraying one deck glue, then the same with panel-shaped along guitar qin case direction paving shape, amplify the carbon fiber one-way woven cloth of 20-50mm width with time delay limit; This laying is 0 degree of direction, and namely carbon filament direction is identical with qin case direction; This layer material thickness 0.2mm;
7. scroll head cover plate place spreads five layers of carbon fiber twill weave cloth along scroll head direction, and glue spraying water is bonding between layers, and its shape is the same with scroll head cover plate shape, amplifies 20-50mm width with time delay limit; Scroll head cover plate materials gross thickness is 0.8-1.0mm;
8. above often spread one deck all with instrument by cloth compacting, buildup of resin when preventing injecting glue, affects density and intensity;
2) seal: at panel and scroll head cover plate upper berth release cloth before sealing; And then spread flow-guiding screen; Mozzle is distributed on flow-guiding screen; Install mozzle and start sealing; During sealing, adhesive tape is bonded at around the mouth of panel mold limit, then plastic foil is attached on adhesive tape and carries out sealing sealing, seal mouth and check that whether the sealing of plastic foil periphery is good afterwards, can not leak gas;
3) vacuumize: before vacuumizing, check whether plastic foil leaks gas, otherwise impact effect, then start to vacuumize; The pressure of vacuum pump is between 0-1MPa; Flow-guiding screen and plastic foil to be put in order uniformly when vacuumizing, packing phenomenon not occur, to ensure the homogeneity of product.
4) injecting glue:
1. do gel test before injecting glue, control gel time at 10-30 minute, in ensureing that product at this moment, all soak into rear beginning gel;
2. reexamine plastic foil before injecting glue and whether have gas leak phenomenon, guarantee that good seal starts to prepare injecting glue; With the epoxy resin that pump will be stirred, inject panel by gum-injecting port and mozzle; During injecting glue, the pressure of vacuum pump is between 0-1MPa; Resin will be distributed to each corner of panel laying, to ensure the density of product; Epoxy resin content is between 40-45%;
5) demoulding, polishing, finishing: after injecting glue, peel off release cloth after solidification, then polishes, repairs;
6) glue together: glue together bass bar by inside the panel trimmed; Scroll head cover plate trims for subsequent use;
(2) scroll head of guitar, neck, side plate and backboard, is manufactured
The scroll head of guitar, neck, side plate and these four parts of backboard realize with the body die of guitar,
1) laying
1. prepare before laying: the first step, dabs off dust and the oil stain of die surface with the cloth of soft material; Second step, waxes to whole mould, and waxing is wanted evenly, and at least 2-4 time; 3rd step, uniform spray one deck epoxy resin on the mould accomplishing fluently wax, natural air drying; Start when epoxy resin is just tack-free to carry out laying;
2. first at the tergal position of unitary mould, along guitar scroll head direction, the carbon fiber twill weave cloth that paving one deck shape is the same with backboard with size, this layer material thickness 0.2mm; Spray one deck glue after completing, repave shape the same with backboard, size prolongs the carbon fiber one-way woven cloth that limit reduces 20mm, and this laying is 0 degree of direction, and namely carbon filament direction is identical with scroll head direction, this layer material thickness 0.2mm; Spray one deck glue after completing, repave two-layer shape the same with backboard, size prolongs the carbon fiber plain weave cloth that limit reduces 40mm, and glue spraying water is bonding between layers, this materials at two layers thickness 0.4mm; Paving layer 5: the carbon fiber one-way woven cloth that paving shape is the same with backboard with size;
Below often spread one deck all with instrument by cloth compacting, buildup of resin when preventing injecting glue, affects density and intensity, also can affect attractive in appearance.
3. secondly in the side plate position of unitary mould, paste four layers of carbon fiber twill weave cloth, glue spraying water carries out bonding between layers; The width of twill puts 50-80mm than side plate width more, and side plate carbon fiber twill weave cloth and backboard position overlap 10-15mm, and the part had more stays limit to be convenient to the demoulding; Insert in side plate bottom center and paste two-layer 0 degree of carbon fiber one-way woven cloth, 0 degree of carbon fiber one-way woven cloth refers to that the carbon filament direction of carbon fiber unidirectional cloth is along guitar side plate direction, its width is the same with side plate width, and length is 100-300mm, carries out bonding between layers with glue; Then last one deck of backboard is repaved: at backboard layer 5 surface spray one deck glue, then spread the shape carbon fiber one-way woven cloth the same with backboard with size;
4. neck, scroll head are connected, and all adopt carbon fiber twill weave cloth and carbon fiber one-way woven cloth; Spread four layers of carbon fiber twill weave cloth at neck, scroll head position along scroll head direction, glue spraying water is bonding between layers; Interleave the two-layer 0 degree of carbon fiber one-way woven cloth of paving in four layers, 0 degree of carbon fiber one-way woven cloth refers to that the carbon filament direction of carbon fiber unidirectional cloth is along guitar neck direction, and neck and side plate place overlap 10-30mm;
2) seal: at the unitary mould upper berth release cloth of scroll head, neck, side plate and backboard before sealing; And then spread flow-guiding screen; Mozzle is distributed on flow-guiding screen; Install mozzle and start sealing; During sealing, adhesive tape is bonded at around the mouth of panel mold limit, then plastic foil is attached on adhesive tape and carries out sealing sealing, seal mouth and check that whether the sealing of plastic foil periphery is good afterwards, can not leak gas;
3) vacuumize: before vacuumizing, check whether plastic foil leaks gas, otherwise impact effect, then start to vacuumize; The pressure of vacuum pump is between 0-1MPa; Flow-guiding screen and plastic foil to be put in order uniformly when vacuumizing, packing phenomenon not occur, to ensure the homogeneity of product;
4) injecting glue:
1. to do gel test before injecting glue, control gel time at 10-30 minute, in ensureing that product at this moment, all soak into rear beginning gel;
2. reexamine plastic foil before injecting glue and whether have gas leak phenomenon, guarantee that good seal starts to prepare injecting glue; With the epoxy resin that pump will be stirred, inject panel by gum-injecting port and mozzle; During injecting glue, the pressure of vacuum pump is between 0-1MPa; Resin will be distributed to each corner of panel laying, to ensure the density of product; Epoxy resin content is between 35-40%;
5) demoulding, polishing, finishing: injecting glue is complete, peel off release cloth after solidification, then polishes, repairs.
6) glue together: by the unitary mould tergal position Jiao Shangdiyinliang trimmed; The gap PVC of scroll head is carried out foaming to fill up or fill up, above then scroll head cover plate being glued at glass surface felt; For subsequent use;
(3) with panel and the scroll head cover plate of tool gummed guitar;
(4) mend the surface of mill, application guitar, paint does thin as far as possible, reduces the impact of paint on pronunciation;
(5) glue together fingerboard, Qin Qiao, tie up string block, upper capotasto, lower chord pillow, by the upper lower chord pillow height of specification finishing;
(6) roller bearing string button, string are installed;
The technical problem to be solved in the present invention can also be come to realize further by the following technical programs, gel test will be done before injecting glue, the vessel of dixie cup size are put into by liquid epoxies, then the hardening agent of 1-3% is added according to volume ratio, stir, start the calculated for gel time, gel time controls at 10-30 minute simultaneously, in ensureing that product at this moment, all soak into rear beginning gel.
The present invention compared with prior art, utilize that carbon fibre composite intensity is large, modulus is high, quality gently, not yielding, designability and the good advantage of processability, the Principles of Acoustics of simultaneously imitating timber make carbon fiber guitar.This carbon fiber guitar body selects domestic carbon fibre and a small amount of glass to carry out compound, is characterized in being no lack of flexibility on firm basis, allows carbon fiber guitar produce melodious beautiful tonequality; Timber Principles of Acoustics copied by the panel of guitar and backboard, adopt different structural designs, and carry out reinforcement solutions for bottom neck and qin case, have tone color grace, indeformable, do not make moist, the feature such as do not ftracture, to thoroughly overturn traditional instrument industry, guitar is shone new brilliance, opens a new road to the making of musical instrument.
Embodiment
A kind of method of carbon fiber and glass produced with combination guitar
The scroll head of carbon fiber guitar, neck, side plate and backboard are full carbon fiber, and its panel is that carbon fiber and glass are composited, and fingerboard, Qin Qiao, to tie up the accessories such as string block, upper capotasto, lower chord pillow be wooden.Qin case is the main composition part of guitar, and it is formed by backboard and the gummed such as side plate and panel.Guitar Design of Dies is the open mould of high temperature resistant glass fibre reinforced plastic, and in two sub-sections, one is used to the panel and the scroll head cover plate that make guitar to mould, and second is used to the mould making guitar body, comprises these four parts of scroll head, neck, side plate and backboard.
Carbon fiber guitar utilizes that carbon fibre composite intensity is large, modulus is high, quality gently, not yielding, designability and the good advantage of processability, imitate the Principles of Acoustics of timber simultaneously and make.Carbon fiber guitar structure is designed to the texture structure of timber, and different grain design has very different elastic propertys and pronunciation band characteristic.
Panel is the most important part of guitar.The panel of wood guitar generally selects kahikatea, and its feature is the soft timber of atresia, also has good strength-weight ratio, does thin, be conducive to vibratory sound when proof strength.And the present invention is when making carbon fiber guitar panel, take into full account the feature of kahikatea, two-layer glass cloth has been added in the middle of carbon fiber fabric, when not subtracting its intensity, improve flexibility and the impact resistance (because guitar when playing, often can knock panel improve rhythm and effect) of panel; Simultaneously at the carbon fiber unidirectional cloth increasing by two layers 0 ° (carbon filament direction is along central axis direction) direction near panel second and third layer outermost; Now panel laying direction is 0 ° and accounts for 2/3,90 ° and account for 1/3, meets different grain design and has very different elastic propertys and pronunciation band characteristic; The shape that panel designs of the present invention is thick middle, surrounding is thin, there is 1.2mm in the thickest place, and the thinnest place only has 0.9mm, adds the characteristic of carbon fibre composite good springiness, is just more conducive to the vibration of panel, ejects graceful sound of musical instrument.
The backboard of guitar, side plate are the major parts forming qin case, and the vibration of backboard is air transmitted and producing in qin, and when panel vibration, backboard also vibrates thereupon.The backboard of wood guitar generally selects rose wood, and its feature is that density is large, and hardness is good, and the resistance produced sound is less, and backboard plays a part catoptron to sound, to strengthen the reflecting properties of guitar.Guitar design master, in order to pursue a kind of bright sound with metal-like, often selects Brazilian rosewood to be enhanced.The present invention, when making carbon fiber backboard, all adopts carbon fiber fabric, increases intensity and the hardness of backboard; Also control the resin content (< 40%) of backboard simultaneously, improve the density of backboard; The shape that carbon fiber back plate design is thick middle, surrounding is thin, there is 1.3mm in the thickest place, and the thinnest place only has 1.0mm, and intensity, the thickness of ratio panels are all higher; The feature of backboard of the present invention is density larger (higher than rose wood 35%), intensity higher (matching in excellence or beauty with steel), the resistance produced sound is less, and be conducive to the reflection of sound, carbon fiber guitar can send a kind of bright graceful sound with metal-like.
Mould is selected.Select pyroceram steel mold, quality is light, and efficiency is high, labor strength is low.Mould must meet the following conditions:
1. mould must meet intensity high, be out of shape the requirements such as little, size is accurate;
2. mould must meet lightweight, and operative is convenient, and practicality is high.
Mould prepares: the first step, dabs off dust and the oil stain of die surface with the cloth of soft material; Second step, waxes to whole mould, and waxing is wanted evenly, and at least 2-4 limit (being convenient to the demoulding); 3rd step, uniform spray one deck epoxy resin on the mould accomplishing fluently wax, natural air drying (observe at any time and can not parch), keeps for subsequent use.
Material selection
1. reinforcing material: select shock resistance, wellability is good, fiber cloth, continuous felt, knittingly shortly cuts felt, composite felt etc.We select 3K carbon fiber twill weave cloth, 12K carbon fiber one-way and plain weave woven cloth, CW140 glass plain weave cloth and sandwich material (PVC foam core, cork wood sandwich, composite felt etc.); Its specification is 100-400g/m2;
2. injecting glue resin: select the resin that low viscosity, lower shrinkage, wellability are good.The present invention selects the epoxy resin-bisphenol A type epoxy resin (or normal temperature resin) of good fluidity; Its viscosity is between 200-600mPa.S; The epoxide number of epoxy resin, at 0.3-0.5, is characterized in existing necessarily pliable and tough, has again good rigidity.
Moulding process is selected: vacuum aided injection molding technique or RTM (ResinTransferMolding) injection molding technique.
Concrete method for making is as follows:
(1) panel and the scroll head cover plate of guitar is first manufactured:
According to the feature (flexibility of panel will be got well) of guitar panel, the present invention selects carbon fiber and glass compound to make guitar panel, makes the existing certain intensity of panel, has again certain toughness, improve tonequality and the audio of guitar.Scroll head cover plate and guitar panel are on a mould, and full carbon fiber fabric selected by scroll head cover plate.Its technique is as follows:
1) laying
1. prepare before laying: whether the resin first inspection panel mould sprayed parches (parching carbon cloth sticky loosely), and in like dry not dry (resin can not glue hand), carry out laying, carbon cloth is easily firmly sticky;
2. first on panel mold (along guitar qin case direction), paving shape is the same with panel-shaped, then prolongs the 3K*200g/m that 20-50mm width (being convenient to the demoulding) is amplified on limit
2carbon fiber twill weave cloth; This layer material thickness 0.20mm;
3. second and third layer is spreading on ground floor cloth, spray one deck glue (vaporific), then the same with panel-shaped along guitar qin case direction paving shape, amplifies the 12K*200g/m of 20-50mm width (being convenient to the demoulding) with time delay limit
2carbon fiber one-way woven cloth; Glue spraying water (vaporific) is bonding between layers; This is two-layer is 0 ° of direction, and namely carbon filament direction is identical with qin case direction; This materials at two layers thickness 0.4mm;
4. the 4th layer is spreading on third layer cloth, spray one deck glue (vaporific), then spreads shape the same with panel-shaped (along guitar qin case direction), reduces the 1200*130g/m of 20mm width with time delay limit
2glass plain weave cloth, this layer material thickness 0.15mm;
5. layer 5 is having spread on the 4th layer of cloth, sprays one deck glue (vaporific), then the same with panel-shaped along guitar qin case direction paving shape, reduces the 1200*130g/m of 40mm width with time delay limit
2glass plain weave cloth, this layer material thickness 0.15mm;
6. layer 6 is spreading on layer 5 cloth, sprays one deck glue (vaporific), then the same with panel-shaped along guitar qin case direction paving shape, amplifies the 12K*200g/m of 20-50mm width (being convenient to the demoulding) with time delay limit
2carbon fiber one-way woven cloth; This laying is 0 degree of direction, and namely carbon filament direction is identical with qin case direction; This layer material thickness 0.2mm;
7. scroll head cover plate spreads five layers of 3K*200g/m
2carbon fiber twill weave cloth (along scroll head direction), glue spraying water (vaporific) is bonding between layers, and its shape is the same with scroll head cover plate shape, amplifies 20-50mm width (being convenient to the demoulding) with time delay limit; Scroll head cover plate materials gross thickness is 0.8-1.0mm;
8. above often spread one deck all with instrument by cloth compacting, buildup of resin when preventing injecting glue, affects density and intensity, also can affect attractive in appearance.
2) seal: at panel and scroll head cover plate upper berth release cloth before sealing; And then spread flow-guiding screen; Mozzle is distributed on flow-guiding screen; Install mozzle and start sealing; During sealing, adhesive tape is bonded at around the mouth of panel mold limit, then plastic foil is attached on adhesive tape and carries out sealing sealing, seal mouth and check that whether the sealing of plastic foil periphery is good afterwards, can not leak gas.
3) vacuumize: before vacuumizing, check whether plastic foil leaks gas, otherwise impact effect, then start to vacuumize; The pressure of vacuum pump is between 0-1MPa (negative pressure); Flow-guiding screen and plastic foil to be put in order uniformly when vacuumizing, packing phenomenon not occur, to ensure the homogeneity of product.
4) injecting glue:
1. gel test will be done before injecting glue, the vessel of dixie cup size are put into by liquid epoxies, then the hardening agent of 1-3% is added according to volume ratio, stir simultaneously, start the calculated for gel time, gel time controls at 10-30 minute, in ensureing that product at this moment, all soaks into rear beginning gel.
2. reexamine plastic foil before injecting glue and whether have gas leak phenomenon, guarantee that good seal starts to prepare injecting glue; Select resin demand according to product size, join in resin by the consumption of the hardening agent determined during gel test and promoter, carry out uniform stirring, immediately with the epoxy resin that pump will be stirred after stirring, inject panel by gum-injecting port and mozzle; During injecting glue, the pressure of vacuum pump is between 0-1MPa (negative pressure); Resin will be distributed to each corner of panel laying, to ensure the density of product; Epoxy resin content is between 40-45%.
5) demoulding, polishing, finishing: after injecting glue, ambient temperature curing (or hot setting); Also the baking oven that panel and scroll head die for cover plate are put into lower than 35 degree can be toasted, to accelerate set time.Peel off release cloth after solidification, then polish, repair.
6) glue together: glue together bass bar by inside the panel trimmed; Scroll head cover plate trims for subsequent use.
(2) scroll head of guitar, neck, side plate and backboard, is manufactured
The scroll head of guitar, neck, side plate and these four parts of backboard realize with the body die of guitar.
1) laying
1. prepare before laying: first check whether the resin that the unitary mould of scroll head, neck, side plate and backboard is sprayed parches (parching carbon cloth sticky loosely), in like dry not dry (resin can not glue hand), carry out laying, carbon cloth is easily firmly sticky.
2. first at the tergal position (along guitar scroll head direction) of unitary mould, the 3K*200g/m that paving one deck shape is the same with backboard with size
2carbon fiber twill weave cloth, this layer material thickness 0.2mm; Spray one deck glue (vaporific) after completing, repave shape the same with backboard, size prolongs the 12K*200g/m that limit reduces 20mm
2carbon fiber one-way woven cloth (this laying is 0 degree of direction, and namely carbon filament direction is identical with scroll head direction), this layer material thickness 0.2mm; Spray one deck glue (vaporific) after completing, repave two-layer shape the same with backboard, size prolongs the 3K*200g/m that limit reduces 40mm
2carbon fiber plain weave cloth, glue spraying water (vaporific) is bonding between layers, this materials at two layers thickness 0.4mm; Five, six layers (layer 6s etc. repave after having spread side plate), the 12K*200g/m that paving shape is the same with backboard with size
2carbon fiber one-way woven cloth, glue spraying water (vaporific) is bonding between layers, this materials at two layers thickness 0.4mm.Below often spread one deck all with instrument by cloth compacting, buildup of resin when preventing injecting glue, affects density and intensity, also can affect attractive in appearance.
3. secondly in the side plate position of unitary mould, four layers of 3K*200g/m are pasted
2carbon fiber twill weave cloth, spray form glue carries out bonding between layers; The width of twill puts 50-80mm than side plate width more, and side plate carbon cloth and backboard position overlap 10-15mm, and the part had more stays limit to be convenient to the demoulding; Insert in side plate bottom center and paste two-layer 0 degree (referring to that the carbon filament direction of carbon fiber unidirectional cloth is along guitar side plate direction) 12K*200g/m
2carbon fiber one-way woven cloth, its width is the same with side plate width, and length is 100-300mm, carries out bonding between layers with vaporific glue; Then last one deck of backboard is repaved.
4. neck, scroll head are connected, and all adopt 3K*200g/m
2carbon fiber twill weave cloth and 12K*100 carbon fiber one-way woven cloth; Four layers of (along scroll head direction) 3K*200g/m are spread at neck, scroll head position
2carbon fiber twill weave cloth, glue spraying water (vaporific) is bonding between layers; Interleave paving two-layer 0 degree (referring to that the carbon filament direction of carbon fiber unidirectional cloth is along guitar neck direction) 12K*200 carbon fiber one-way woven cloth in four layers, glue spraying water (vaporific) is bonding between layers; Carbon cloth wide go out the limit of staying of mould 50-80mm be convenient to the demoulding; Neck and side plate place overlap 10-30mm.
2) seal: at the unitary mould upper berth release cloth of scroll head, neck, side plate and backboard before sealing; And then spread flow-guiding screen; Mozzle is distributed on flow-guiding screen; Install mozzle and start sealing; During sealing, adhesive tape is bonded at around the mouth of panel mold limit, then plastic foil is attached on adhesive tape and carries out sealing sealing, seal mouth and check that whether the sealing of plastic foil periphery is good afterwards, can not leak gas.
3) vacuumize: before vacuumizing, check whether plastic foil leaks gas, otherwise impact effect, then start to vacuumize; The pressure of vacuum pump is between 0-1MPa (negative pressure); Flow-guiding screen and plastic foil to be put in order uniformly when vacuumizing, packing phenomenon not occur, to ensure the homogeneity of product.
4) injecting glue:
1. gel test will be done before injecting glue, the vessel of dixie cup size are put into by liquid epoxies, then the hardening agent of 1-3% is added according to volume ratio, stir simultaneously, start the calculated for gel time, gel time controls at 10-30 minute, in ensureing that product at this moment, all soaks into rear beginning gel.
2. reexamine plastic foil before injecting glue and whether have gas leak phenomenon, guarantee that good seal starts to prepare injecting glue; Select resin demand according to product size, join in resin by the consumption of the hardening agent determined during gel test and promoter, carry out uniform stirring, immediately with the epoxy resin that pump will be stirred after stirring, inject panel by gum-injecting port and mozzle; During injecting glue, the pressure of vacuum pump is between 0-1MPa (negative pressure); Resin will be distributed to each corner of panel laying, to ensure the density of product; Epoxy resin content is between 35-40%.
5) demoulding, polishing, finishing: after injecting glue, ambient temperature curing (or hot setting); Also the baking oven that panel and scroll head die for cover plate are put into lower than 35 degree can be toasted, to accelerate set time.Peel off release cloth after solidification, then polish, repair.
6) glue together: by the unitary mould tergal position Jiao Shangdiyinliang trimmed; The gap PVC of scroll head is carried out foaming to fill up or fill up, above then scroll head cover plate being glued at glass surface felt; For subsequent use.
(3) with panel and the scroll head cover plate of tool gummed guitar.
(4) mend the surface of mill, application guitar, paint does thin as far as possible, reduces the impact of paint on pronunciation.
(5) glue together fingerboard, Qin Qiao, tie up string block, upper capotasto, lower chord pillow, by the upper lower chord pillow height of specification finishing.
(6) roller bearing string button, string etc. are installed.
Claims (2)
1. carbon fibre reinforced composite makes a method for guitar, it is characterized in that:
Concrete method for making is as follows:
(1) panel and the scroll head cover plate of guitar is first manufactured:
1) laying
1. prepare before laying: the first step, dabs off dust and the oil stain of die surface with the cloth of soft material; Second step, waxes to whole mould, and waxing is wanted evenly, and at least 2-4 time; 3rd step, uniform spray one deck epoxy resin on the mould accomplishing fluently wax, natural air drying; Start when epoxy resin is just tack-free to carry out laying;
2. first on panel mold along guitar qin case direction, paving shape is the same with panel-shaped, then prolongs the carbon fiber twill weave cloth of limit amplification 20-50mm width; This layer material thickness 0.20mm;
3. spread second and third layer: spreading on ground floor cloth, spray one deck glue, then the same with panel-shaped along guitar qin case direction paving shape, amplify the carbon fiber one-way woven cloth of 20-50mm width with time delay limit; Continuous paving is two-layer, and glue spraying water is bonding between layers; This is two-layer is 0 ° of direction, and namely carbon filament direction is identical with qin case direction; This materials at two layers thickness 0.4mm;
4. spread the 4th layer: spreading on third layer cloth, spray one deck glue, then the same with panel-shaped along guitar qin case direction paving shape, reduce the glass plain weave cloth of 20mm width with time delay limit, this layer material thickness 0.15mm;
5. spreading layer 5: having spread on the 4th layer of cloth, spray one deck glue, then the same with panel-shaped along guitar qin case direction paving shape, reducing the glass plain weave cloth of 40mm width with time delay limit, this layer material thickness 0.15mm;
6. spread layer 6: spreading on layer 5 cloth, spraying one deck glue, then the same with panel-shaped along guitar qin case direction paving shape, amplify the carbon fiber one-way woven cloth of 20-50mm width with time delay limit; This laying is 0 degree of direction, and namely carbon filament direction is identical with qin case direction; This layer material thickness 0.2mm;
7. scroll head cover plate place spreads five layers of carbon fiber twill weave cloth along scroll head direction, and glue spraying water is bonding between layers, and its shape is the same with scroll head cover plate shape, amplifies 20-50mm width with time delay limit; Scroll head cover plate materials gross thickness is 0.8-1.0mm;
8. above often spread one deck all with instrument by cloth compacting, buildup of resin when preventing injecting glue, affects density and intensity;
2) seal: at panel and scroll head cover plate upper berth release cloth before sealing; And then spread flow-guiding screen; Mozzle is distributed on flow-guiding screen; Install mozzle and start sealing; During sealing, adhesive tape is bonded at around the mouth of panel mold limit, then plastic foil is attached on adhesive tape and carries out sealing sealing, seal mouth and check that whether the sealing of plastic foil periphery is good afterwards, can not leak gas;
3) vacuumize: before vacuumizing, check whether plastic foil leaks gas, otherwise impact effect, then start to vacuumize; The pressure of vacuum pump is between 0-1MPa; Flow-guiding screen and plastic foil to be put in order uniformly when vacuumizing, packing phenomenon not occur, to ensure the homogeneity of product;
4) injecting glue:
1. do gel test before injecting glue, control gel time at 10-30 minute, in ensureing that product at this moment, all soak into rear beginning gel;
2. reexamine plastic foil before injecting glue and whether have gas leak phenomenon, guarantee that good seal starts to prepare injecting glue; With the epoxy resin that pump will be stirred, inject panel by gum-injecting port and mozzle; During injecting glue, the pressure of vacuum pump is between 0-1MPa; Resin will be distributed to each corner of panel laying, to ensure the density of product; Epoxy resin content is between 40-45%;
5) demoulding, polishing, finishing: after injecting glue, peel off release cloth after solidification, then polishes, repairs;
6) glue together: glue together bass bar by inside the panel trimmed; Scroll head cover plate trims for subsequent use;
(2) scroll head of guitar, neck, side plate and backboard, is manufactured
The scroll head of guitar, neck, side plate and these four parts of backboard realize with the body die of guitar;
1) laying
1. prepare before laying: the first step, dabs off dust and the oil stain of die surface with the cloth of soft material; Second step, waxes to whole mould, and waxing is wanted evenly, and at least 2-4 time; 3rd step, uniform spray one deck epoxy resin on the mould accomplishing fluently wax, natural air drying; Start when epoxy resin is just tack-free to carry out laying;
2. first at the tergal position of unitary mould, along guitar scroll head direction, the carbon fiber twill weave cloth that paving one deck shape is the same with backboard with size, this layer material thickness 0.2mm; Spray one deck glue after completing, repave shape the same with backboard, size prolongs the carbon fiber one-way woven cloth that limit reduces 20mm, and this laying is 0 degree of direction, and namely carbon filament direction is identical with scroll head direction, this layer material thickness 0.2mm; Spray one deck glue after completing, repave two-layer shape the same with backboard, size prolongs the carbon fiber plain weave cloth that limit reduces 40mm, and glue spraying water is bonding between layers, this materials at two layers thickness 0.4mm; Paving layer 5: the carbon fiber one-way woven cloth that paving shape is the same with backboard with size;
Below often spread one deck all with instrument by cloth compacting, buildup of resin when preventing injecting glue, affects density and intensity, also can affect attractive in appearance;
3. secondly in the side plate position of unitary mould, paste four layers of carbon fiber twill weave cloth, glue spraying water carries out bonding between layers; The width of twill puts 50-80mm than side plate width more, and side plate carbon fiber twill weave cloth and backboard position overlap 10-15mm, and the part had more stays limit to be convenient to the demoulding; Insert in side plate bottom center and paste two-layer 0 degree of carbon fiber one-way woven cloth, 0 degree of carbon fiber one-way woven cloth refers to that the carbon filament direction of carbon fiber unidirectional cloth is along guitar side plate direction, its width is the same with side plate width, and length is 100-300mm, carries out bonding between layers with glue; Then last one deck of backboard is repaved: at backboard layer 5 surface spray one deck glue, then spread the shape carbon fiber one-way woven cloth the same with backboard with size;
4. neck, scroll head are connected, and all adopt carbon fiber twill weave cloth and carbon fiber one-way woven cloth; Spread four layers of carbon fiber twill weave cloth at neck, scroll head position along scroll head direction, glue spraying water is bonding between layers; Interleave the two-layer 0 degree of carbon fiber one-way woven cloth of paving in four layers, 0 degree of carbon fiber one-way woven cloth refers to that the carbon filament direction of carbon fiber unidirectional cloth is along guitar neck direction, and neck and side plate place overlap 10-30mm;
2) seal: at the unitary mould upper berth release cloth of scroll head, neck, side plate and backboard before sealing; And then spread flow-guiding screen; Mozzle is distributed on flow-guiding screen; Install mozzle and start sealing; During sealing, adhesive tape is bonded at around the mouth of panel mold limit, then plastic foil is attached on adhesive tape and carries out sealing sealing, seal mouth and check that whether the sealing of plastic foil periphery is good afterwards, can not leak gas;
3) vacuumize: before vacuumizing, check whether plastic foil leaks gas, otherwise impact effect, then start to vacuumize; The pressure of vacuum pump is between 0-1MPa; Flow-guiding screen and plastic foil to be put in order uniformly when vacuumizing, packing phenomenon not occur, to ensure the homogeneity of product;
4) injecting glue:
1. to do gel test before injecting glue, control gel time at 10-30 minute, in ensureing that product at this moment, all soak into rear beginning gel;
2. reexamine plastic foil before injecting glue and whether have gas leak phenomenon, guarantee that good seal starts to prepare injecting glue; With the epoxy resin that pump will be stirred, inject panel by gum-injecting port and mozzle; During injecting glue, the pressure of vacuum pump is between 0-1MPa; Resin will be distributed to each corner of panel laying, to ensure the density of product; Epoxy resin content is between 35-40%;
5) demoulding, polishing, finishing: injecting glue is complete, peel off release cloth after solidification, then polishes, repairs;
6) glue together: by the unitary mould tergal position Jiao Shangdiyinliang trimmed; The gap PVC of scroll head is carried out foaming to fill up or fill up, above then scroll head cover plate being glued at glass surface felt; For subsequent use;
(3) with panel and the scroll head cover plate of tool gummed guitar;
(4) mend the surface of mill, application guitar, paint does thin as far as possible, reduces the impact of paint on pronunciation;
(5) glue together fingerboard, Qin Qiao, tie up string block, upper capotasto, lower chord pillow, by the upper lower chord pillow height of specification finishing;
(6) roller bearing string button, string are installed.
2. carbon fibre reinforced composite according to claim 1 makes the method for guitar, it is characterized in that: before injecting glue, will gel test be done, the vessel of dixie cup size are put into by liquid epoxies, then the hardening agent of 1-3% is added by volume, stir, start the calculated for gel time, gel time controls at 10-30 minute simultaneously, in ensureing that product at this moment, all soak into rear beginning gel.
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| CN104681009A (en) * | 2013-11-29 | 2015-06-03 | 北京怡生飞扬科技发展有限公司 | Acoustic guitar |
| CN106328100B (en) * | 2016-09-21 | 2019-07-05 | 刘希曦 | A kind of manufacture craft of matouqin qin case |
| CN106328102A (en) * | 2016-10-27 | 2017-01-11 | 李焕强 | Carbon fiber guitar and making method thereof |
| CN107369432A (en) | 2017-08-11 | 2017-11-21 | 广州市拿火科技有限公司 | A kind of guitar and preparation method thereof |
| CN107672240A (en) * | 2017-10-17 | 2018-02-09 | 深圳市零壹创新科技有限公司 | A kind of carbon fiber sheet and its manufacture method |
| CN108297237B (en) * | 2018-01-19 | 2020-07-14 | 中航复材（北京）科技有限公司 | Novel composite material violin and manufacturing method thereof |
| CN110256782A (en) * | 2019-07-09 | 2019-09-20 | 贵州谦梦乐器制造有限公司 | A kind of guitar qin case and its production technology |
| CN112397041A (en) * | 2019-08-01 | 2021-02-23 | 张晓立 | Fingerboard for manufacturing fixed-position musical instrument fingerboard by using all-carbon fibers and manufacturing method thereof |
| CN110454491B (en) * | 2019-09-10 | 2023-06-16 | 洛阳北玻三元流风机技术有限公司 | Forming method of carbon fiber hollow transmission shaft with spline |
| CN113059867B (en) * | 2021-03-26 | 2023-05-23 | 威海和利源碳纤维科技有限公司 | Carbon fiber structural member and preparation method thereof |
| CN114736499B (en) * | 2022-03-07 | 2023-05-23 | 金发科技股份有限公司 | PC composite material and preparation method and application thereof |
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| EP1630786B1 (en) * | 2004-08-24 | 2007-03-07 | Martin Schleske | Sound board with fibre reinforced composite material for stringed instruments |
| CN201266479Y (en) * | 2008-06-26 | 2009-07-01 | 李宗盛 | Guitar sound board and support frame structure thereof |
| CN101615388A (en) * | 2008-06-26 | 2009-12-30 | 李宗盛 | The support frame structure of guitar soundboard and soundboard |
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| US6538183B2 (en) * | 2000-02-08 | 2003-03-25 | Frederick J. Verd | Composite stringed musical instrument, and method of making the same |
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| EP1630786B1 (en) * | 2004-08-24 | 2007-03-07 | Martin Schleske | Sound board with fibre reinforced composite material for stringed instruments |
| CN201266479Y (en) * | 2008-06-26 | 2009-07-01 | 李宗盛 | Guitar sound board and support frame structure thereof |
| CN101615388A (en) * | 2008-06-26 | 2009-12-30 | 李宗盛 | The support frame structure of guitar soundboard and soundboard |
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Address after: 222000 Jiangsu province Lianyungang Dapu industrial zone of Lianyungang economic and Technological Development Zone Cloud Road No. 6 Patentee after: Lianyungang Shenying carbon fiber bicycle Limited by Share Ltd Address before: 222000 Zhenxing Road, Haizhou Development Zone, Jiangsu, Lianyungang, China, No. 1 Patentee before: Lianyungang Shenying Carbon Bike Co., Ltd. |