CN103268761A - Rockcase accordion made of short carbon fiber reinforced resin matrix composite materials - Google Patents
Rockcase accordion made of short carbon fiber reinforced resin matrix composite materials Download PDFInfo
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Abstract
The invention belongs to the field of accordion production and particularly relates to a rockcase accordion made of short carbon fiber reinforced resin matrix composite materials. The rockcase accordion comprises a keyboard, an air bellow, a bass and an accordion cover, wherein the keyboard, the air bellow and the bass are sequentially connected, the accordion cover is fixedly installed on the keyboard, and the keyboard is composed of a keyboard voice box, keys and keyboard metaphone devices. The keys and the keyboard metaphone devices are installed on the keyboard voice box, the bass is composed of a bass voice box, bass beans and bass metaphone devices, the bass beans and the bass metaphone devices are installed on the bass voice box, and the rockcase accordion is characterized in that the keyboard voice box is made of the short carbon fiber reinforced resin matrix composite materials in an integrally-formed mode, and the bass voice box is made of the short carbon fiber reinforced resin matrix composite materials in an integrally-formed mode. The rockcase accordion made of the short carbon fiber reinforced resin matrix composite materials has the advantages of being good in tone, light in weight, not easy to damage, easy to manufacture, low in cost and the like, and is highly innovative.
Description
Technical field
The invention belongs to the accordion production field, particularly a kind of short carbon fiber strengthens polymer matrix composites qin case accordion.
Background technology
Accordion belongs to the free spring aerophone, and the dependence air-flow excites reed vibrates and pronounces, and is good (instrumental) ensemble, musical instrument accompaniment, also is the musical instrument commonly used in the music teaching.At present, the qin case of accordion comprises keyboard audio amplifier, bass audio amplifier etc.Keyboard audio amplifier, bass audio amplifier are the housings of accordion, also are the main bodys of accordion framed structure, and keyboard audio amplifier, bass audio amplifier adopt timber such as Korean pine, kahikatea, maple to make base more, the sticking versicolor celluloid of surface bag.In the past, this was that raw material is made the accordion parts with timber, had ten big drawbacks: the one, and the prices of raw and semifnished materials are expensive, and utilization factor is low, causes the cost height.Because used timber requires growth period longer, generally want decades, go up the century-old age of tree, and demand is bigger, so these timber prices are all higher; And domestic wood supply deficiency, need dependence on import, cause cost of manufacture to increase more.The 2nd, weight is big.Arranging spring 120BS accordions with three is example, and every accordion weight is about 10 kilograms, and this feels heavy deeply concerning the especially juvenile fan of many amateurs.The 3rd, production process is many, complex process.Begin to need 30 multiple working procedures to completing from the timber fracture, and the technological requirement of many operations is also very harsh.As the raw material of timber as the qin case, log must be broken into behind the sheet material under not open-air condition air dry and just can use in 2 years, and timber moisture must control below 5%, the moisture height easily makes the qin case deform, and gas leakage influences the quality of accordion.Dried timber neither all can both be suitable for makes the qin case, select the timber that does not all have the scab joint for use, is commonly called as completely without the scab material.The various smallclothes material of processing utilize the mold of different size to be combined into the qin case, carry out bondingly again with white glues, and every kind of smallclothes material can not surpass 1mm to difference, leak gas that to cause product defective otherwise can cause.The 4th, the production cycle is long.Play to complete from fracture and take 90 days.The 5th, the occupation of capital time is long, from advancing timber to completing, the time more than 2 years.The 6th, occupied ground is big.The starting material resting period is long, manufacturing procedure is many, and the flowing water line length all will take up room.The 7th, product is fragile.The 8th, it is many to take personnel, and labour intensity is big.The 9th, to employee quality requirement height.The tenth, production efficiency is low.Above problem, its root all are with timber to be that starting material are made the accordion parts, and seeking a kind of new material, to come replacing wood be extremely urgent.At this difficult problem, the applicant drops into substantial contribution, equipment and technical force, and cooperates with domestic institution of higher learning, is devoted to the research and development of new material.Through experiment and unremitting effort repeatedly in a few years, successfully utilize short carbon fiber to strengthen the polymer matrix composites replacing wood, disposal molding is made accordion qin case, the all drawbacks that exist in the traditional fabrication method have been solved, and research and develop and made a series of short carbon fibers enhancing polymer matrix composites qin case accordions, realized the revolution progress that accordion is manufactured.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide that a kind of functional, weight is light, handling ease, lower-cost short carbon fiber strengthen polymer matrix composites qin case accordion.
The present invention solves its technical matters and takes following technical scheme to realize:
A kind of short carbon fiber strengthens polymer matrix composites qin case accordion, comprise keyboard, bellows, bass and Qin Gai, keyboard, bellows and bass connect successively, the qin lid is installed on the keyboard, described keyboard is made up of keyboard audio amplifier, key and the keyboard device of changing voice, and key and the keyboard device of changing voice all is installed on the keyboard audio amplifier; Described bass is made up of bass audio amplifier, bass beans and the bass device of changing voice, and bass beans and the bass device of changing voice all is installed on the bass audio amplifier, and it is characterized in that: it is one-body molded that described keyboard audio amplifier strengthens polymer matrix composites by short carbon fiber; It is one-body molded that described bass audio amplifier strengthens polymer matrix composites by short carbon fiber.
And the bottom of described keyboard audio amplifier is shaped on the audio amplifier frame, and audio amplifier frame is that short carbon fiber strengthens polymer matrix composites on this, and one-body molded with described keyboard audio amplifier.
And the top of described bass audio amplifier is shaped on down the audio amplifier frame, and this time audio amplifier frame is that short carbon fiber strengthens polymer matrix composites, and one-body molded with described bass audio amplifier.
And described short carbon fiber strengthens polymer matrix composites, is that the ABS resin of 80-90%, PC engineering plastics and the cooperation of 2-5% short carbon fiber of 8-15% form by percentage by weight.
Advantage of the present invention and good effect are:
1. short carbon fiber of the present invention strengthens polymer matrix composites qin case accordion, excellent, and tonequality, tamber effect are good.
2. short carbon fiber of the present invention strengthens polymer matrix composites qin case accordion, and weight is lighter.
3. short carbon fiber of the present invention strengthens polymer matrix composites qin case accordion, and is insensitive to humidity, not yielding.
4. short carbon fiber of the present invention strengthens polymer matrix composites qin case accordion, and its qin case is that disposable injection moulding is made, and than wooden qin case 30 multiple working procedures and 2 years multiplex's phases, its operation is simple, makes easily, and the duration is shorter.
5. this short carbon fiber strengthens polymer matrix composites qin case accordion, and its qin case is made for the artificial-synthetic material, and cost is lower.
6. this short carbon fiber strengthens polymer matrix composites qin case accordion, the short carbon fiber that adopts strengthens polymer matrix composites and strengthens polymer matrix composites by described short carbon fiber, be that the PC engineering plastics of ABS resin, 8-15% of 80-90% and 2-5% short carbon fiber cooperate and form by percentage by weight, effectively strengthen injection moulding workpiece tension and flexural strength.
7. this short carbon fiber strengthens polymer matrix composites qin case accordion, and audio amplifier frame is that short carbon fiber strengthens polymer matrix composites on it, and one-body molded with described keyboard audio amplifier; Following audio amplifier frame is that short carbon fiber strengthens polymer matrix composites, and one-body molded with described bass audio amplifier; Adopt short carbon fiber to strengthen polymer matrix composites and replace original wooden acoustic box frame, further reduce operation, reduce cost, it is heavy to alleviate qin.
8. short carbon fiber of the present invention strengthens polymer matrix composites qin case accordion, having advantages such as tone color, tonequality is good, in light weight, not fragile, making is easy, cost is lower, is that a kind of short carbon fiber with high novelty strengthens polymer matrix composites qin case accordion.
Description of drawings
Fig. 1 strengthens polymer matrix composites qin case accordion structure synoptic diagram (not containing auxiliary equipments such as braces) for short carbon fiber of the present invention;
Fig. 2 is Fig. 1 right view.
Description of reference numerals
1-key, the 2-keyboard device of changing voice, 3-qin lid, 4-keyboard audio amplifier, 5-bellows, 6-bass audio amplifier, the 7-bass device of changing voice, 8-bass beans, audio amplifier frame under the last audio amplifier frame of 9-, the 10-.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described by specific embodiment.Following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
A kind of short carbon fiber strengthens polymer matrix composites qin case accordion, comprises keyboard, bellows 5, bass and qin lid 3.Keyboard, bellows and bass connect successively.The qin lid is installed on the keyboard.Keyboard is made up of keyboard audio amplifier 4, key 1 and the keyboard device 2 of changing voice.Key, the keyboard device of changing voice is installed on the keyboard audio amplifier.Bass is made up of bass audio amplifier 6, bass beans 8 and the bass device 7 of changing voice.Bass beans, the bass device of changing voice is installed on the bass audio amplifier.
The innovation part that this short carbon fiber strengthens polymer matrix composites qin case accordion is: it is one-body molded that the keyboard audio amplifier strengthens polymer matrix composites by short carbon fiber.It is one-body molded that the bass audio amplifier strengthens polymer matrix composites by short carbon fiber.The bottom of keyboard audio amplifier is shaped on audio amplifier frame 9, and audio amplifier frame is that short carbon fiber strengthens polymer matrix composites on this, and one-body molded with described keyboard audio amplifier.The top of bass audio amplifier is shaped on down audio amplifier frame 10, and this time audio amplifier frame is that short carbon fiber strengthens polymer matrix composites, and one-body molded with described bass audio amplifier.Adopt short carbon fiber to strengthen polymer matrix composites and replace original wooden acoustic box frame, further reduce operation, reduce cost, it is heavy to alleviate qin.
Short carbon fiber of the present invention strengthens polymer matrix composites, is that the ABS resin of 80-90%, PC engineering plastics and the cooperation of 2-5% short carbon fiber of 8-15% form by percentage by weight.The ABS resin of the short carbon fiber enhancing polymer matrix composites employing of adopting among the present invention 90% and 9% PC engineering plastics and 1 short carbon fiber constitute.The chopped carbon fiber that short carbon fiber adopts polyacrylonitrile carbon fiber or asphalt-based carbon fiber carbonization to make.
It is as follows that above-mentioned short carbon fiber strengthens its main material performance index of polymer matrix composites:
Density: 1.0-1.7kg/m
3
Tensile strength: more than the 3500MPa.
Tensile modulus: 23000-43000MPa.
Hydroscopicity: insensitive to wet environment.
Absorptivity: extremely low.
Each parts adopts compound behind overheated melting, and adopts mold injection molding.
Short carbon fiber of the present invention strengthens polymer matrix composites qin case accordion, through architecture institute Building Technology Science research institute of the University Of Tianjin accordion syllable frequency characteristic contrast test of doing on March 17 in 2013 (test No.: Y-13-001), protolignin's qin case accordion and short carbon fiber strengthen polymer matrix composites qin case accordion, 12 typical single syllable musical frequency characteristics are almost completely identical, and some aspect short carbon fiber strengthens polymer matrix composites qin case accordion and also is better than wooden qin case accordion.
Attached: " University Of Tianjin's architecture institute Architecural Physics examining report " (test No.: Y-13-001)
The principle of work that this short carbon fiber strengthens polymer matrix composites qin case accordion is:
Short carbon fiber strengthens polymer matrix composites qin case accordion, comprises keyboard qin tank shell and bass qin tank shell, makes because it strengthens the disposable injection moulding of polymer matrix composites by short carbon fiber, so operation is simple, make easily, the duration is shorter, and integrated cost is lower; Because short carbon fiber strengthens polymer matrix composites proportion less than timber, so weight is lighter; To strengthen the polymer matrix composites physical property good because of short carbon fiber, so its tonequality, tamber effect are good; To strengthen polymer matrix composites insensitive to wet environment because of short carbon fiber, so its not yielding, cracking is durable in use.
The short-and-medium carbon fiber enhancement resin base composite material qin of the present invention case is compared with the wooden qin case of tradition, has outstanding advantage:
One, material behavior
Accordion qin case comprises keyboard qin case and bass qin case, is the housing of accordion, also is the main body of framed structure.Effect mainly comprises fixing various parts, protection qin body inner structure and as the resonant of reed pronunciation etc.Therefore, its selection will take into full account the mechanical property of material, simultaneously under the prerequisite that guarantees vocal music effects such as its tonequality, tone color, alleviate the weight of accordion self as far as possible, satisfy accordion fan's demand, reach the attenuating production cost, significantly save the purpose of the timber energy.Data shows after deliberation, makes the look wood that accordion qin case uses at present and requires density generally at 0.8kg/m
3More than, tensile strength parallel to grain is generally about 120MPa.
The tensile strength of carbon fiber enhancement resin base composite material of the present invention is more than 3500MPa, and tensile modulus is more than 23000-43000MPa, and density is then generally between 1.0-1.7kg/m
3Between, concrete numerical value depends on the content of carbon fiber.Good physical property has determined carbon fiber enhancement resin base composite material to have better advantage than timber, can not only guarantee to make the intensity of accordion qin case requirement, and thinner than timber quality, make the qin case of making lighter, reached the purpose that reduces the accordion own wt.Simultaneously, the integral body of compound substance forms technology, effectively avoided with timber be in the manufacture craft of raw material owing to seam produces the potential problems of gas leakage, improved the quality of accordion.Carbon fiber enhancement resin base composite material has stronger designability than timber, the actual needs of the accordion of more fitting.
Two, technology is simple, and is with short production cycle
It is complicated and tediously long with timber to be that raw material is made accordion qin case, need through fracture, making, the sticking three process of bag, and the per pass operation also needs several links just can finish.The white stubble qin case of the smallclothes material (totally 18 kinds) of sheet material → disconnected square material → all size in log → break into sheet material → air dry → disconnected → bonding → punch → polish → repair → check → finish → beat putty → polish → soaks (acetone celluloid mixed liquor) → bag glues (celluloid) → drying (15 days) → polishing → first pass (360# emery wheel) → second time (600# emery wheel) → 3 time (pure cotton dolly) → bag glue → to be finished.
Use the production cycle of wooden qin case: the about 30 → day about 7 days → qin of the fracture case of the drying of wood was assembled the sticking about 7 days → dryness finalization of polishing of about 30 days → bag about 15 days.Amount to 90 days.
Make accordion qin case with the tencel resin, simplified traditional working link, one-shot forming, convenient and swift, its technology is: fibre resin → moulding (Die casting machine) → check → finish.
The production cycle of using new material to make the qin case is: injection moulding about 3 days → deburring of finalizing the design was assembled about 4 days.Amount to about 7 days.
Three, the demand manpower is few
Be that raw material is made the qin case with the carbon fiber enhancement resin base composite material, do not have harsh environment and technical requirement, the common laborer, just can easily finish by specialized equipment in the environment of normal temperature by the professional training of short-term, reaches the production demand.Technology is avoided the error in adhesion process by numerous to letter, has improved the qualification rate of product.Because the traditional handicraft operation is many, and mostly is and makes by hand, so it is more to take the workman.Adopting new material is semi-automatic production, takies the workman and only is 1/10 of original workman's number, has liberated the labour of most.
Four, appearance looks elegant is beautiful
Wear-resisting more anti-the bumping of qin case that new material is made is difficult for producing cut, and smooth finish is good, makes qin case outward appearance more beautiful, has promoted the aesthetic feeling of accordion.
Five, the feature of environmental protection is good
Timber is made the qin case and (is amounted to 18 kinds) from log to the smallclothes material that is processed into all size, need carry out repeatedly fracture by electric saw and handle.Processing procedure can produce corresponding waste material----sawdust.According to statistics, used the about 1500m of timber last year altogether comprehensively
3, because it is more harsh to the requirement of wood quality to make accordion, the timber utilization rate generally can only reach about 40%, and 600m is namely arranged
3Timber become waste material and efflux, not only timber is had certain waste, and process also can produce dust and certain noise, cause environmental pollution.In manufacturing process, also to use a kind of chemical substance--acetone.Because acetone and timber all have inflammable physical characteristics, make the environment of producing become company's fire prevention emphasis always, safety in production is the most important thing.
Be that raw material is made the qin case with the carbon fiber enhancement resin base composite material, by special-purpose Die casting machine one-step die casting, smooth surface, and it is residual not have organic molecule, preparation process does not have obvious peculiar smell, do not have dust and noise, purified production environment, simultaneously, the waste material that produces and unacceptable product can be pulverized it and re-use, cut the waste, realized Sustainable utilization of resources, reach this operation " zero-emission ".Adopt new material to make the qin case and do not re-use acetone and timber, reduced the potential safety hazard of plant area, be conducive to safety in production.
Six, production efficiency height
Be raw material with timber, because operation is many, intensity is big, and mostly is and makes by hand, production efficiency is not high, calculates by the skilled worker, from fracture, be adhered to makings, wrap to adhere to and finish, only can make 2 for each person every day, reach the demand of production, only make the qin case and will expend great amount of manpower.Because the home built limitation, because of bonding not tight, size is not inconsistent with timber because the factors such as distortion naturally that the loss of moisture causes also can cause the generation of certain waste product, goes out the rate of giving up and is about 20% in manufacturing process.
Make accordion qin case with carbon fiber enhancement resin base composite material, original numerous and diverse manufacture craft is oversimplified, utilize advanced equipment simultaneously, reach semi-automatic and produce, improved production efficiency widely, the workman of a professional short-term cultivation of process, can operate 3 equipment simultaneously, everyone per hour just can manufacture 9, and production efficiency is original 36 times, fewer workers and several equipment satisfy present turnout, as long as just can be finished.
Seven, good in economic efficiency
Be that base stock is made accordion qin case with timber, because waste material consuming time takies a large amount of manpowers, make every accordion production cost high always, from fracture, be fabricated into and finish, every accordion cost is about 180 yuan/cover.The employing new material not only saves time, laborsaving, material-saving, and disposable finishing, and greatly reduces production cost, by original 180 yuan/cover, be reduced to 70 yuan/cover, be about original 1/3 now, calculate according to producing accordion 30,000 (parts) year, can save production cost surplus in the of 300 ten thousand yuan every year.
Although disclose embodiments of the invention and accompanying drawing for the purpose of illustration, but it will be appreciated by those skilled in the art that: in the spirit and scope that do not break away from the present invention and claims, various replacements, variation and modification all are possible, therefore, scope of the present invention is not limited to embodiment and the disclosed content of accompanying drawing.
Claims (4)
1. a short carbon fiber strengthens polymer matrix composites qin case accordion, comprise keyboard, bellows, bass and Qin Gai, keyboard, bellows and bass connect successively, the qin lid is installed on the keyboard, described keyboard is made up of keyboard audio amplifier, key and the keyboard device of changing voice, and key and the keyboard device of changing voice all is installed on the keyboard audio amplifier; Described bass is made up of bass audio amplifier, bass beans and the bass device of changing voice, and bass beans and the bass device of changing voice all is installed on the bass audio amplifier, and it is characterized in that: it is one-body molded that described keyboard audio amplifier strengthens polymer matrix composites by short carbon fiber; It is one-body molded that described bass audio amplifier strengthens polymer matrix composites by short carbon fiber.
2. short carbon fiber according to claim 1 strengthens polymer matrix composites qin case accordion, it is characterized in that: the bottom of described keyboard audio amplifier is shaped on the audio amplifier frame, should go up the audio amplifier frame is that short carbon fiber strengthens polymer matrix composites, and one-body molded with described keyboard audio amplifier.
3. short carbon fiber according to claim 1 strengthens polymer matrix composites qin case accordion, it is characterized in that: the top of described bass audio amplifier is shaped on down the audio amplifier frame, this time audio amplifier frame is that short carbon fiber strengthens polymer matrix composites, and one-body molded with described bass audio amplifier.
4. short carbon fiber according to claim 1 strengthens polymer matrix composites qin case accordion, it is characterized in that: described short carbon fiber strengthens polymer matrix composites, is that the ABS resin of 80-90%, PC engineering plastics and the cooperation of 2-5% short carbon fiber of 8-15% form by percentage by weight.
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| CN105100973A (en) * | 2014-05-22 | 2015-11-25 | 苏杰 | Pure solid wood sound box |
| CN106652982A (en) * | 2015-10-22 | 2017-05-10 | 尔阿披通·祂内特 | Accordion, electronic accordion, and computer program product |
| CN107955322A (en) * | 2017-12-12 | 2018-04-24 | 金发科技股份有限公司 | It is a kind of to be used to manufacture carbon fibre reinforced composite of musical instrument and preparation method thereof |
| CN107958660A (en) * | 2017-12-12 | 2018-04-24 | 金发科技股份有限公司 | A kind of guitar, lucky allothimorph and preparation method thereof |
| CN107974035A (en) * | 2017-12-12 | 2018-05-01 | 广州市拿火信息科技有限公司 | A kind of guitar, panel tone beam and preparation method thereof |
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