The utility model content
The utility model provides a kind of system that adopts photosensitive paint to wooden guitar electrostatic spraying in order to overcome the deficiency that above prior art exists, and the native system cost is low, environmental protection, production efficiency height.
The purpose of this utility model realizes by following technical scheme: this employing photosensitive paint is to the system of wooden guitar electrostatic spraying, it is characterized in that: described paint finishing is in the enclosure space, paint finishing comprises the conveying track of circulation and the automatic electrostatic dust collection device that is arranged in order along conveying track, hand is mended the paint spray booth, electrostatic painting chamber and curing room, enclosure space is provided with the inlet that blows wet wind, the indoor butterfly shower nozzle that is provided with of electrostatic painting, the butterfly shower nozzle connects the photosensitive paint pipe, the photosensitive paint pipe connects the pressure pot that photosensitive paint is housed, three sidewalls of electrostatic painting chamber are provided with cascade, cascade connects water inlet pipe and drainpipe, be provided with the intensive ultraviolet emitter in the curing room, wooden guitar workpiece hangs on the conveying track.
Described conveying track comprises rail, chain and a plurality of hanger, and each workpiece hangs on the hanger, and hanger is located at below the chain, and chain is located in the rail.
Described conveying track is provided with driving device and stretcher, and driving device drives that chain is circulating to move ahead, stretcher tension chain.Because variations in temperature, chain can expand with heat and contract with cold, and stretcher has guaranteed that chain is in the state of tensioning always.
In order to guarantee the wooden guitar deposition effect that sprays paint, the dustless rank of described enclosure space is 10,000 grades, the temperature of enclosure space is 25 ± 3 ℃, the humidity of enclosure space<75%, the air output of enclosure space is bigger by 20% than exhausting amount, air-flow through water filter paper, slightly imitate filter screen, medium air filtration and remove the inlet that blows wet wind that enters enclosure space behind bag, high efficiency particulate air filter, the high efficiency filter cotton, guaranteed that air-flow becomes dustless wet wind.
The area of described electrostatic painting chamber is 4-10m
2, three sidewalls of electrostatic painting chamber are the stainless steel wall, the stainless steel wall is convenient to scrub and clean more.The length of curing room is 3m.
In order to make workpiece have the best deposition effect that sprays paint, the humidity of described wooden guitar workpiece is 8%~10%, and the preceding line speed of conveying track is stepless speed regulation 1~6m/min, and the range that the butterfly shower nozzle moves up and down is 1000mm.
Above-mentioned employing photosensitive paint may further comprise the steps the spraying method of the system of wooden guitar electrostatic spraying:
(1), preliminary treatment, the wooden guitar workpiece with certain humidity is suspended to conveying track;
(2), the starting conveying track, conveying track begins circulating moving ahead;
(3), conveying track transports wooden guitar workpiece and enters the automatic electrostatic dust collection device, the automatic electrostatic dust collection device blows out the air-flow that has negative electricity, the dust of wood guitar workpiece is also electronegative, and by the repulsive interaction of negative electricity and negative electricity, dust breaks away from wooden guitar workpiece and blown away by air-flow;
(4), conveying track transports wooden guitar workpiece and enters hand and mend the paint spray booth, mend the paint spray booth at hand and the hand spray photosensitive paint carried out at the dead angle (hook position, interface position) of wooden guitar workpiece by the workman;
(5), conveying track transports wooden guitar workpiece and enters the electrostatic painting chamber, the dish-shaped shower nozzle and the photosensitive paint of electrostatic painting chamber connect high voltage source, wood guitar workpiece grounding, the rotation of butterfly shower nozzle also moves up and down simultaneously, photosensitive paint produces under the action of centrifugal force in the revolution of butterfly shower nozzle and is thrown out of the formation atomizing particle, the rotation simultaneously of wood guitar workpiece, under the action of high voltage of high voltage source, form an electrostatic field between butterfly shower nozzle and the wooden guitar workpiece, electronegative photosensitive paint atomizing particle is under electrostatic field, to the motion of wooden guitar surface of the work, and be deposited on to form on the wooden guitar surface of the work and film uniformly;
Be not deposited on the photosensitive paint atomizing particle of wooden guitar surface of the work, enter in the indoor cascade of electrostatic painting, add paint remover in the cascade, make the paint that enters in the water lose viscosity and the floating water surface formation lacquer slag of going up;
(6), wooden guitar Workpiece painting finishes, conveying track transports wooden guitar workpiece and enters curing room, the intensive ultraviolet emitter in the curing room sends strong ultraviolet radiation wood guitar workpiece, photosensitive paint solidifies rapidly under the ultraviolet irradiation effect;
(7), conveying track transports wooden guitar workpiece and goes out curing room, the wooden guitar workpiece completion of processing of spraying paint.
The coating thickness that described step (5) is deposited on the wooden guitar surface of the work is 0.03~0.04mm.This thickness had both reached appearance looks elegant, can not come off, the coating thickness effect of uniform, also saved paint simultaneously, reduced cost.
The preliminary treatment of described step (1) may further comprise the steps:
1., the input track in circulation hangs up wooden guitar workpiece;
2., the input track transports wooden guitar workpiece and enters manual compression air cleaning chamber, manually by the electrostatic precipitation rifle wooden guitar workpiece carried out dedusting;
3., the input track transports wooden guitar workpiece and enters the automatic compressed air dirt pocket, compressed air carries out dedusting to wooden guitar workpiece automatically;
4., manually take off wooden guitar workpiece, manually by the electrostatic precipitation rifle wooden guitar workpiece is carried out dedusting once more, at last the wooden guitar workpiece with certain humidity is suspended to conveying track.
Described step (7), conveying track are transported wooden guitar workpiece and are gone out curing room, and wooden guitar workpiece sprays paint after the completion of processing, and wooden guitar workpiece is changed the output track that is suspended to circulation, transport out enclosure space by the output track.Change the operation that extension transports by this, avoid too many workman to enter enclosure space, reduced dust.
The utility model has following advantage with respect to prior art:
One, from the position of cost management:
1, in system's spraying process of this employing photosensitive paint to wooden guitar electrostatic spraying, electronegative paint atomizing particle to surface of the work motion, and is deposited on to form on the surface of the work and films uniformly under electrostatic field.The voltage of the suffered electric field force of paint atomizing particle and electrostatic field and the carried charge that paints atomizing particle are directly proportional, and and the distance between butterfly shower nozzle and workpiece be inversely proportional to.Owing to adopt electrostatic spraying, reduce unnecessary coating cloud or knock-on significantly, significantly save paint, cut the waste, reduce cost about 100 kilograms/month of the refuse that electrostatic spraying UV lacquer produced in every month, about 600 kilograms/month of the refuse that hand spray PU finish paint produced in every month.The minimizing of coating cloud also can help the cleaning in the paint spray booth, though be indirect effect, also can reduce in order to safeguard, clean required expense and time.
2, the material of paint cost of equal number product: 49275 yuan/month of the utility model photosensitive paints (photosensitive paint is called UV lacquer or UV finish paint), 104700 yuan/month in existing PU lacquer, material cost can be saved 55425 yuan/month in every month.
3, spraying method of the present utility model need not to polish venue cost, and existing P U lacquer spraying needs the polishing venue cost, about 0.8 yuan of the material that polishing consumes/.
4, cost of labor: the utility model production line needs artificial 12 people, and existing production line hand spray PU finish paint, polishing, polishing need artificial 20 people, can save 8 people * 1500 yuan/people=12000 yuan/month in artificial every month.
5, the qualification rate aspect expense of being saved: electrostatic spraying UV finish paint first-time qualification rate can reach about 95%, and hand spray PU finish paint first-time qualification rate reaches 70% at most, the utility model has reduced material, the labour cost of doing over again, and the production cycle is shortened in the production that also is wooden guitar virtually, has created condition for improving production capacity.
Two, from the position of environmental protection:
Cascade of the present utility model makes the UV lacquer be easy to more handle, be not deposited on the photosensitive paint atomizing particle (about 20%) of wooden guitar surface of the work, enter in the indoor cascade of electrostatic painting, add paint remover in the cascade, make the paint that enters in the water lose viscosity and the floating water surface formation lacquer slag of going up, can conveniently pick up, come into operation again after more can handling the UV lacquer, and sewage just can discharge through simple process.
The coating cloud waste gas that existing hand spray PU lacquer then produces is many, and between the utilization rate of paint general 20% to 25%, and coating cloud is very most of directly enters in the air.
Three, with regard to production efficiency:
The utility model spraying rate is fast, produces and stablizes, and is easy to management.The utility model UV electrostatic painting process: first day spray seal coat, repaiied look in second day, the 3rd day spray PE priming paint, the 4th day spray UV finish paint just can finish wooden guitar product processing in four days, and prior art needs the Ninth Heaven.
250/hours of an electrostatic spraying production line of the utility model production capacity, and present hand spray is owing to be subjected to the restriction of conditions such as place, personnel, environment, 120/hours of production capacity.
Four, with regard to spraying effect:
1, this spray processing technique, the UV coating cloud particle of electrostatic spraying, because of particle all is electronegative, so it is mutually exclusive, this repulsive interaction brings particle more to be tending towards even in the distribution of surface of the work, can significantly improve the homogeneity and the plumpness of coating thickness, the glossiness of filming, scratch-resistant performance etc. are greatly improved;
2, positions such as workpiece corner, depression are easy to japanning, it is more even to film, and can not cause Lou spray.
3, good levelability, because smooth coating, evenly, under suitable conditions such as temperature humidity, filming is easy to levelling, no tangerine peel phenomenon has directly improved the clarity of filming.
4, good luster, for difficult japanning positions such as inner surface, corners, gloss improves more obvious.
Five, UV-curing technology is called for short the UV curing technology, is the brand-new process for treating surface that rises in the world sixties end in last century, adopts the coating of UV curing technology to be called for short the UV lacquer.Its basic composition is photo curable extraordinary synthetic resin, photo curable extraordinary diluent and light trigger.Its film-forming mechanism is, light trigger resolves into active group rapidly under UV-irradiation, and active group causes extraordinary synthetic resin and the diluent instaneous polymerization reticulates big molecular film, is dried to fine and close paint film at normal temperatures rapidly thereby reach.This technology has the following advantages:
1, curing rate is fast, under given conditions, only needs the several seconds fully hardening time, can improve spray efficiency greatly.
2, UV lacquer itself does not contain volatile solvent, can reach 100% solid content in theory, can realize " zero-emission " of application, meets modern to environmental protection requirement.
3, compare with other paint, the UV lacquer has very excellent film performance, as high gloss, high rigidity, and extraordinary resistance to chemical corrosion and good weather resisteant energy.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Employing photosensitive paint as shown in Figure 1 is to the system of wooden guitar electrostatic spraying, paint finishing is in the enclosure space, paint finishing comprises the conveying track 1 of circulation and the automatic electrostatic dust collection device 2 that is arranged in order along conveying track, hand is mended paint spray booth 3, electrostatic painting chamber 4 and curing room 5, enclosure space is provided with the inlet that blows wet wind, the indoor butterfly shower nozzle 6 that is provided with of electrostatic painting, the butterfly shower nozzle connects the photosensitive paint pipe, the photosensitive paint pipe connects the pressure pot that photosensitive paint is housed, three sidewalls of electrostatic painting chamber are provided with cascade, cascade connects water inlet pipe and drainpipe, be provided with the intensive ultraviolet emitter in the curing room, wooden guitar workpiece hangs on the conveying track.
Conveying track comprises rail, chain and a plurality of hanger, and each workpiece hangs on the hanger, and hanger is located at below the chain, and chain is located in the rail.
Conveying track is provided with driving device 7 and stretcher 8, and driving device drives that chain is circulating to move ahead, stretcher tension chain.Because variations in temperature, chain can expand with heat and contract with cold, and stretcher has guaranteed that chain is in the state of tensioning always.
In order to guarantee the wooden guitar deposition effect that sprays paint, the dustless rank of enclosure space is 10,000 grades, the temperature of enclosure space is 25 ℃, the humidity of enclosure space is 70%, the air output of enclosure space is bigger by 20% than exhausting amount, air-flow through water filter paper, slightly imitate filter screen, medium air filtration and remove the inlet that blows wet wind that enters enclosure space behind bag, high efficiency particulate air filter, the high efficiency filter cotton, guaranteed that air-flow becomes dustless wet wind.
The area of electrostatic painting chamber is 9m
2, three sidewalls of electrostatic painting chamber are the stainless steel wall, the stainless steel wall is convenient to scrub and clean more.The length of curing room is 3m.
In order to make workpiece have the best deposition effect that sprays paint, the humidity of wooden guitar workpiece is 8%~10%, and the preceding line speed of conveying track is stepless speed regulation 3.5m/min, and the range that the butterfly shower nozzle moves up and down is 1000mm.
Above-mentioned employing photosensitive paint may further comprise the steps the spraying method of the system of wooden guitar electrostatic spraying:
(1), preliminary treatment, the wooden guitar workpiece with certain humidity is suspended to conveying track;
(2), the starting conveying track, conveying track begins circulating moving ahead;
(3), conveying track transports wooden guitar workpiece and enters the automatic electrostatic dust collection device, the automatic electrostatic dust collection device blows out the air-flow that has negative electricity, the dust of wood guitar workpiece is also electronegative, and by the repulsive interaction of negative electricity and negative electricity, dust breaks away from wooden guitar workpiece and blown away by air-flow;
(4), conveying track transports wooden guitar workpiece and enters hand and mend the paint spray booth, mend the paint spray booth at hand and the hand spray photosensitive paint carried out at the dead angle (hook position, interface position) of wooden guitar workpiece by the workman;
(5), conveying track transports wooden guitar workpiece and enters the electrostatic painting chamber, the dish-shaped shower nozzle and the photosensitive paint of electrostatic painting chamber connect high voltage source, wood guitar workpiece grounding, the rotation of butterfly shower nozzle also moves up and down simultaneously, photosensitive paint produces under the action of centrifugal force in the revolution of butterfly shower nozzle and is thrown out of the formation atomizing particle, the rotation simultaneously of wood guitar workpiece, under the action of high voltage of high voltage source, form an electrostatic field between butterfly shower nozzle and the wooden guitar workpiece, electronegative photosensitive paint atomizing particle is under electrostatic field, to the motion of wooden guitar surface of the work, and be deposited on to form on the wooden guitar surface of the work and film uniformly;
Be not deposited on the photosensitive paint atomizing particle of wooden guitar surface of the work, enter in the indoor cascade of electrostatic painting, add paint remover in the cascade, make the paint that enters in the water lose viscosity and the floating water surface formation lacquer slag of going up;
(6), wooden guitar Workpiece painting finishes, conveying track transports wooden guitar workpiece and enters curing room, the intensive ultraviolet emitter in the curing room sends strong ultraviolet radiation wood guitar workpiece, photosensitive paint solidifies rapidly under the ultraviolet irradiation effect;
(7), conveying track transports wooden guitar workpiece and goes out curing room, the wooden guitar workpiece completion of processing of spraying paint.
The coating thickness that described step (5) is deposited on the wooden guitar surface of the work is 0.04mm.This thickness had both reached appearance looks elegant, can not come off, the coating thickness effect of uniform, also saved paint simultaneously, reduced cost.
Wherein, the preliminary treatment of step (1) may further comprise the steps:
1., the input track 9 in circulation hangs up wooden guitar workpiece;
2., the input track transports wooden guitar workpiece and enters manual compression air cleaning chamber 10, manually by the electrostatic precipitation rifle wooden guitar workpiece carried out dedusting;
3., the input track transports wooden guitar workpiece and enters automatic compressed air dirt pocket 11, compressed air carries out dedusting to wooden guitar workpiece automatically;
4., manually take off wooden guitar workpiece, manually carry out dedusting by 12 pairs of wooden guitar workpiece of electrostatic precipitation rifle once more, at last the wooden guitar workpiece with certain humidity is suspended to conveying track.
Wherein, step (7), conveying track transports wooden guitar workpiece and goes out curing room, and wooden guitar workpiece sprays paint after the completion of processing, and wooden guitar workpiece is changed the output track 13 that is suspended to circulation, transports out enclosure space by the output track.Change the operation that extension transports by this, avoid too many workman to enter enclosure space, reduced dust.
The above-mentioned specific embodiment is a preferred embodiment of the present utility model; can not limit the utility model; other any change that does not deviate from the technical solution of the utility model and made or other equivalent substitute mode are included within the protection domain of the present utility model.