CN101125316B

CN101125316B - Painting method

Info

Publication number: CN101125316B
Application number: CN2007101423268A
Authority: CN
Inventors: 上野信
Original assignee: Individual
Current assignee: Shang Yexin
Priority date: 2006-08-14
Filing date: 2007-08-13
Publication date: 2012-06-06
Anticipated expiration: 2027-08-13
Also published as: CN101125316A; JP2008043870A; KR20080015369A; KR101155052B1

Abstract

A coating device is provided to repair. When a spray gun (1)is at trip gear (34) and at pripping part side (8), a valve part (16) is apart from a valve seat part (15) and then start to open. The valve part (16) is mounted with an air restriction part (18) and properly decompresses the pressure even though the valve part (16) discharges bigger air pressure, thus the valve part (16) is very good for the painting dressing at half-on off state. In step of drying, a heating tube is set apart form the coating film of water system coatings at preset distance, the heating tube for emitting heat of preset wavelength field is subjected to heating of preset time and then at the state of keeping heating, the blower is used to blow in preset time. Even though the water system coatings of high viscosity are used, the thickness of painting dressing is gradually formed from the center to shading part. Without large equipment and high cost, the drying of coating film can be performed at high efficiency, even though the user is defective of experience, the painting dressing of high quality can be performed in short time.

Description

Coating process

Technical field

The present invention relates to the coating process that is used to repair, in more detail, for example relate to after utilizing sheet metal and putty that the damage location of car body etc. is repaired, especially repair the coating process of usefulness with aqueous coating.

Background technology

In recent years, among worldwide earth environment protection activity was surging, reducing the carrying capacity of environment material was important problem.In the painting dressing automobiles line, give off the VOC that becomes the atmosphere pollution reason contained in the coating (Volatile Organic Compounds: become the CO of greenhouse effects of the earth reason because of energy consumption VOC) and in the application drying oven etc. morely ₂

Up to now; Generally at home, in the repair procedure of painting dressing automobiles, coating is in fact with an organic solvent repaired pars affecta; As stated; From the above-mentioned VOC countermeasure of worldwide environmental problem, PRTR method (Pollutant Release and Transrer Register: chemical substance emission control management propelling method), viewpoint such as fire service law, not only to the production line of auto vendor, for repairing that industry also must take some countermeasures and very urgent.

From this background, materials used also changes.In repairing industry, should reduce appointment xylenes. the solvent of the particular chemical medicine that toluene is such, the coating of the ecotype (eco-type) that the solvent utilization rate that replaces is low is put on market.

In addition, from the problem of deodorization problem, low solvent, above-mentioned PRTR method problem and VOC countermeasure problem etc., water paint begins to put on market.Therefore, be the coating user for repairing industry, also must follow the variation of above-mentioned material and re-recognize operation technique and operating environment.

Tackle above-mentioned environmental problem; Replace organic solvent diluting type coating (below abbreviate " organic solvent type coating " as) in the past and make water dilution type coating (below abbreviate " aqueous coating " or " water paint " as), can expect to improve the painting operation environment and reduce the wastewater treatment load.

But, use aqueous coating that variety of issue is arranged.

The 1st problem of aqueous coating is that viscosity causes.When spraying with spray gun, the viscosity of employed coating is when being 20～50 seconds/Fc when method is represented with Ford cup (Ford Cup), and the viscosity of organic solvent type coating in the past is 10～18 seconds/Fc when using the Ford agar diffusion method to represent.Can know that from this situation the high viscosity type of aqueous coating is a main flow.Therefore, in normally used spray gun, be difficult to the atomize from spray gun is made evenly, on application face, become the such surface of orange skin, cause the problem on the quality easily.

Especially in whole application; Even without the problems referred to above; Surface state on carrying out operation during requisite deep or light gradual change application (gradation) operation is variation also, does not play the function of deep or light gradual change application, and the non-repairing face of mobile repair shop becomes eye-catching with the difference of the face of repairing.

The 2nd problem of aqueous coating is that preheating causes.Aqueous coating is owing to be high viscosity, so generation is coated with the problem of loading onto, in order to be that coating reduces viscosity and improves painting operation property with this aqueous coating and organic solvent identically, under the state behind the dilute with water, tries to be used as coating.But; System compares with organic solvent; Because solvent is that evaporation of water speed is slow, so on the production line of auto vendor, produced the regional space of the preheating of the usefulness of between paint booth and drying oven for coating, must guaranteeing to evaporate the water, the such other problem of its equipment must be set.The space in this preheating zone is difficult to repairing on-the-spot the setting, for auto vendor, owing to consume more energy, so the problem that can not introduce water paint is arranged.

From above-mentioned situation; Patent documentation 1 (TOHKEMY 2003-251250 communique) has proposed a kind of like this coating process and painting device of aqueous coating: the air-conditioning allowed band during with the application of aqueous coating enlarges, and can reduce preheating procedure after this significantly.

The coating process of this patent documentation 1; Be water paint to be coated with the method that is contained in by on the application face with spray gun; From before the application of this water paint when application finishes, to coated article and be coated with the spray coatings particle-irradiation hot line that is contained on this coated article, the solid formation component of coating process is controlled.

And, have in the application zone that the painting device of said patent documentation 1 is provided with on by the carrying channel of the coated article of conveyance: the heater that before the application coated article is heated; Has coating machine to the spray gun of coated article spraying water paint; And to being coated with the hot line heater of the spray coatings particle-irradiation hot line that is contained on the coated article face; Especially; Said coating machine is the coating machine that is provided with the horizontal part of a plurality of spray guns and the door shape that the vertical component effect application is used, front and back setting in abutting connection with ground of hot line heater and this shape coating machine.

So, as long as before application, during application, application finishes the Continuous irradiation hot line, the moisture in filming can be in the volatilization of application zone 50% or more, so can the zone of the preheating after the application be shortened in the past below technological half.In addition, owing in application, also shine hot line, therefore, even the solid formation component of coating process particle is risen.Therefore, the air-conditioning of paint booth is enlarged, the result can reduce the required energy use amount of paint booth air-conditioning.

But the coating process and the painting device of above-mentioned patent documentation 1 are what to be used for to the paint line of auto vendor, are difficult to use for repairing industry.

That is, the device of patent documentation 1 is provided in a side of on the paint line of factory, but when having added heater on the application rifle of repairing usefulness, it is heavy that weight becomes, and can't be used for painting operation.And, will be radiated on the coated article from the emittance that infrared lamp, far infrared, middle infrared (Mid-IR) lamp, Halogen lamp LED of being heated to 250 ℃～800 ℃ etc. sends.Therefore, the weld job person in fact can not carry out painting operation by pistol, even maybe, the also inevitable very severe of its operating environment.

In addition, even suppose hand-holdable said spray gun, can carry out whole application to a certain extent, but be very difficult technology to the deep or light gradual change painting operation that constitutes curvature portion.

Patent documentation 1: TOHKEMY 2003-251250 communique

Summary of the invention

In view of the above problems; The 1st purpose of the present invention is; A kind of coating process is provided; Even use the high aqueous coating of viscosity also can atomize be made evenly, especially easy drying regime with whole portion and deep or light gradual change portion makes identical, forms the application thickness gradually and smoothly to deep or light gradual change portion from central division.

The 2nd purpose is, a kind of coating process is provided, and does not spend bigger equipment cost, and does not consume big electric power and just can carry out dried coating film quickly and efficiently.

The 3rd purpose is, a kind of coating process that can help to solve the problem of environmental disruption effectively is provided.

The 4th purpose is, a kind of such coating process is provided: high-quality through technological difficulty is oversimplified or standardization as far as possible even the operator that experience lacks also can obtain, and can shorten and be coated with ETL estimated time of loading.

For realizing above-mentioned purpose, the invention of the 1st technical scheme has been to use the coating process of the repairing usefulness of aqueous coating, it is characterized in that, has application step and drying steps,

Said application step is: compressed air and full-bodied aqueous coating are mixed, with the paint atomizing, be coated on by on the application face with the air pressure of regulation and the spray volume of regulation with spray gun;

Said drying steps is: from said application step through the setting time of regulation and flash distillation (flash off) after the time; Leave the drying device that the configuration of predetermined distance ground is filmed from the coated surface that is coated with said aqueous coating; This drying device has reflector, be provided in the heater in said reflector the place ahead, be provided in the blowing unit at said heater rear; Said heater with the heat that sends the wavelength domain that contains regulation heats the stipulated time to said coated surface, then, and under the state that the heating with said heater continues; Utilize said blowing unit at the appointed time the wind of regulation air quantity to be carried out drying to said coated surface

Then, with the condition of abideing by above-mentioned condition with application step and drying steps more repeatedly more than 2 times.

For realizing above-mentioned purpose, the invention of technical scheme 2 has been to use the coating process of the repairing usefulness of aqueous coating, it is characterized in that, carries out primary application, after this primary application finishes, application is again carried out more than 2 times repeatedly,

Said primary application has following steps:

The application step is mixed compressed air and full-bodied aqueous coating, with the paint atomizing, is coated on by on the application face with the air pressure of regulation and the spray volume of regulation with spray gun;

Drying steps; After the setting time and flash-off time of said application step through regulation; Leave the drying device that the configuration of predetermined distance ground is filmed from the coated surface that is coated with said aqueous coating; This drying device has reflector, be provided in the heater in said reflector the place ahead, be provided in the blowing unit at said heater rear, with the said heater of the heat that sends the wavelength domain that contains regulation to the said coated surface heating stipulated time, then; Under the state that the heating with said heater continues, utilize said blowing unit at the appointed time the wind of regulation air quantity to be carried out drying to said coated surface;

Said application again has following steps:

Application step again through behind the flash-off time, is suitably adjusted the back to being coated with on the above-mentioned coated surface with the air pressure of air pressure and the relative afore mentioned rules of spray volume and the spray volume of regulation;

Drying steps again; After the setting time and flash-off time of above-mentioned application step again through regulation; At the appointed time to said coated surface heating, under the state that the heating with heater continues, utilize said blowing unit that the wind of regulation air quantity is carried out drying to said coated surface then after above-mentioned distance, wavelength domain and heat suitably adjusted with respect to said predetermined distance and the heat that contains the provision wavelengths territory.

The invention of technical scheme 3 is characterized in that, said application step and said drying steps are applicable to the application of priming paint face, application eventually, varnish coated application and drying.

The invention of technical scheme 4 is characterized in that, said spray gun has:

Painting device body, this painting device body are provided with the coating supply passageway of supplying with compressed-air actuated compressed air supply passageway and supplying with coating;

The coating injection nozzle, this coating injection nozzle is located on the said painting device body, has the jet with paint spray;

The air pressure regulon, this air pressure regulon opens and closes said compressed air supply passageway, regulates compressed air pressure;

The coating regulon, this coating regulon opens and closes said jet, regulates the emitted dose of coating,

Said air pressure regulon comprise can with the sectional area of said compressed air supply passageway from zero vary continuously to ormal weight valve portion, make the sectional area of said compressed air supply passageway reduce the air restrictions of ormal weight and decompression, and constitute and make said coating regulon and said air pressure regulon interlock action.

The invention of technical scheme 5; It is characterized in that; Said coating regulon and said air pressure regulon to said spray gun are set; With in trigger portion being moved to the way, when said air pressure regulon and said coating regulon are made half-open position together, make the pressure coupling of the spray volume and the said compressed air supply passageway of said coating, use can with Ford cup number second be 20～45 seconds be the said spray gun of spray gun of the particle even spraying of full-bodied aqueous coating.

The invention of technical scheme 6; It is characterized in that said spray gun is set to, its needle-valve and coating injection nozzle at least shift motion that said trigger portion carries out roughly before half mobile phase; The emitted dose of coating becomes continuously to change; At remaining mobile phase, the roughly the same or minor variations of the emitted dose of coating, said spray gun is suitable for the deep or light gradual change painting operation of the big coating of viscosity.

The invention of technical scheme 7; It is characterized in that; Said drying device makes the heating tube heating that can send far infrared; And this heating tube is provided in by the front reflector of basket and be positioned at the place ahead that body is divided in reflection that a pair of side reflector at these reflector two ends, front constitutes, and heat that this heat-generating pipe is sent out and emission spectrum wavelength illumination are on filming

Beginning irradiation from said heating tube through after the stipulated time, to blow by blowing unit, this temperature of filming is filmed the set point of temperature cooling that reached by said heating roughly about 10 ℃～20 ℃ from said, and this temperature is held in roughly certain state.

The invention of technical scheme 8; It is characterized in that; The heater of said drying device is set under the state of being blown by said blowing unit, and the temperature of coated surface is heated to 60 ℃～70 ℃ front and back, in said drying steps; Said heater and said blowing unit only make the heater action in the second of regulation during the number, during regulation number second, make the action of said heater and said blowing unit after this immediately simultaneously.

The invention of technical scheme 9 is characterized in that, the air output that blows to the blowing unit of said coated surface is that the area of every 1m * 0.7m is 35～50 liters/minute, preferably 40～44 liters/minute.

The invention of technical scheme 10; It is characterized in that; The heater that is used for the drying device of said drying steps is that the solvent that can send said aqueous coating is the heater of the emission spectrum of the wavelength domain that absorbs easily of the solvent of nonionic water or ethanol system; When only said heating is moved, send the emission spectrum in the medium wavelength territory that comprises 2.5 μ m～4.0 μ m.

When making the action of said heater and said blowing unit simultaneously, send the emission spectrum in the long wavelength territory that comprises 5.5 μ m～11 μ m.

The invention of technical scheme 11 is characterized in that, the heater that is used for the drying device of said drying steps is to accommodate nichrome wire, form at the surface coated nickel of said copper pipe at the central part of copper pipe.

Adopt the invention of technical scheme 1,, also can atomize be made evenly even use the high aqueous coating of viscosity that is difficult to application.Very easily carry out with old application face and by the deep or light gradual change application of the obscurity boundary of application face.Especially, can the drying property of deep or light transitional surface be made the degree identical with old application face with granular.In addition, need not spend bigger equipment cost, and not spend the drying that big electric power just can be filmed efficiently.In addition, make through the technological difficulty that will repair as far as possible and to oversimplify or standardization, thereby even provide a kind of operator who is lacking in experience also can obtain high-quality and be coated with the finishing system that ETL estimated time of loading shortens and help suppressing environmental disruption.

Adopt the invention of technical scheme 2,, also can atomize be made evenly even use the high aqueous coating of viscosity that is difficult to application.Very easily carry out with old application face and by the deep or light gradual change application of the obscurity boundary of application face.Especially, can the drying property of deep or light transitional surface be made the degree identical with old application face with granular.In addition, need not spend bigger equipment cost, and not spend big electric power and just can efficiently the drying of filming be carried out more than 2 times repeatedly.In addition, make through the technological difficulty that will repair as far as possible and to oversimplify or standardization, thereby even provide a kind of operator who is lacking in experience also can obtain high-quality and be coated with the finishing system that ETL estimated time of loading shortens and help suppressing environmental disruption.

Adopt the invention of technical scheme 3; In

technical scheme

1 or 2 described inventions; As long as at least the ormal weight in said spray gun and the painting device is suitably adjusted, just can provide a kind of applicable to the priming paint face application of having used aqueous coating, application and the varnish coated application and the finishing system of drying eventually.

Adopt the invention of technical scheme 4; Because bringing slowly from the scope in valve portion closing state to interstage of standard-sized sheet of air pressure regulon greatly and also than technology in the past, pressure changes; Pretend the corresponding pressure of state that is after so-called half-clutch state, coating regulon capable of using are adjusted to the amount of radiation throttling with coating.Very easily carry out with old application face and by the deep or light gradual change application of the obscurity boundary of application face.Especially, can provide a kind of drying property and granular with deep or light transitional surface to make the finishing system with old application face same degree.

Full-bodied aqueous coating adopts the invention of technical scheme 5, even also can easily make atomize evenly.Can provide a kind of easy formation high-quality filming, for example when deep or light gradual change application, can obtain by the homogenising of application face and old application face, particularly can drying property be made roughly the same finishing system.

Adopt the invention of technical scheme 6, can provide a kind of technology also can carry out the finishing system of the deep or light gradual change application under half-clutch state of difficulty in the past easily even without the study height.

Adopt the invention of technical scheme 7,, also can suppress power consumption and make the quick-drying finishing system of filming even can provide a kind made from making the dry slow aqueous coating of the shortest environment the drying time of filming.

Adopt the invention of technical scheme 8; A kind of like this finishing system can be provided: utilize the heat of heater to film; Behind the molecule activity upsweep that makes moisture, ethanol series solvent; Through blowing out behind the wind of regulation air quantity from heater with blowing unit, thus the moisture in can accelerating to greatest extent to film and the evaporation rate of solvent.

Adopt the invention of technical scheme 9; A kind of like this finishing system can be provided: through the radiant heat of irradiation from heater; And make the molecule activity upsweep of moisture and solvent; Polymerization between the molecule in making coating utilizes blowing unit to blow out the wind of ormal weight after combining rapidization, thereby can accelerate moisture to greatest extent and solvent leaves the evaporation rate of filming.

Adopt the invention of technical scheme 10, a kind of like this finishing system can be provided: utilize that sending films and absorb the drying device of wavelength in wavelength and the long wavelength territory in the good medium wavelength territory of density, can carry out the good drying of efficient with less heat-source energy.

Adopt the invention of technical scheme 11; A kind of like this finishing system can be provided: when heat of high temperature can be sent; The rising that reaches this condition of high temperature is fast; Send branch light emission illumination in addition, the moisture in can accelerating to greatest extent to film and the evaporation rate of solvent to the evaporate effective 2 μ m～10 μ m of moisture.

Description of drawings

Fig. 1 is the positive central longitudinal cutaway view of the 1st example of painting device that constitutes the part of finishing system of the present invention.

Fig. 2 is the amplification longitudinal section of the part of the air pressure regulon in the painting device of load map 1.

Fig. 3 is the front view of the air valve in the expression air pressure regulon, and wherein (a) is the front view of representing the surface structure of air valve in the past, (b) is the front view of the surface structure of expression air valve of the present invention.

Fig. 4 is the amplification longitudinal section of part of front and the injection nozzle of the needle-valve in the painting device of load map 1.

Fig. 5 is with the whole front view that amplifies expression of the needle-valve of Fig. 4.

Fig. 6 is the key diagram of general configuration of the drying device of filming of explanation the present invention the 2nd example.

Fig. 7 is the key diagram of the heating-pipe structure of explanation the 2nd example.

Fig. 8 is that the front view of major part structures such as body and heating tube is divided in basket, the reflection of expression the 2nd example.

Fig. 9 is that the pattern cutaway view of major part structures such as body and heating tube is divided in basket, the reflection of the 2nd example seen from the top.

Figure 10 is that the pattern cutaway view of major part structures such as body and heating tube is divided in basket, the reflection of the 2nd example seen from the side.

Figure 11 is the rearview that expression is installed in the basket of the 2nd example the state on the movable stand.

Figure 12 is the block diagram of the electrical system architecture that drying device had of filming of explanation the 2nd example.

Figure 13 is the performance plot of the infrared absorption spectrum of expression water.

Figure 14 is the performance plot of the infrared absorption spectrum of expression xylenes.

Figure 15 is the performance plot of the infrared absorption spectrum of expression toluene.

Figure 16 is the front view of the major part structure of drying device such as the basket, heating tube of expression the present invention the 3rd example.

Figure 17 is expression as being suitable for the heating tube of drying device of the present invention, is proposed and the branch light emission illumination characteristic figure of the branch light emission illumination of 3.0 μ m～8.0 mu m ranges of the heating tube (examination item number No.3) of the standard of trial-production by the present inventor.

Figure 18 is to use the infra-red drying of the examination item number No.3 of standard to use heater, makes to apply electric power to drop to specified 80% be the performance plot of the radiation illumination relative value (during rated value as 1.00) of 650W and the specified 60% branch light emission illumination that is the branch light emission illumination of 500W when lighting a lamp when lighting a lamp with the electric power of specified output (200V, 800W).

Figure 19 is the beam split radioactive nature figure that the result after leaving when heating tube being implemented heating tube (No.1, No.2, No.4, No.5) that various coatings form and using rated electrical that standard test portion No.3 is lit a lamp compares apart from the branch light emission illumination as the position of 600mm gives curveization.

Figure 20 is the water evaporates rate comparative characteristic figure of different graphic.

Figure 21 is the curve map that the surface temperature of useless cloth is passed.

Figure 22 representes only to drive heater, is radiated at state (a) on the useless cloth cloth that will give up from heat and peels off the key diagram of the state (b) that exposes a surface.

To be expression peel off and expose the key diagram of the state (b) on a surface from the state (a) that is carried out 45 seconds aft-fans of thermal exposure by heater and the blow cloth that will give up Figure 23.

Figure 24 is the partial sectional view of sectional structure of the car repair part of the expression operation that is used to explain finishing system of the present invention.

The specific embodiment

The finishing system of the repairing usefulness of example of the present invention is described with reference to the accompanying drawings.

Below, according to the painting device of example with reference to the part of accompanying drawing detailed description formation finishing system of the present invention.

Fig. 1 is the positive central longitudinal cutaway view of part of the painting device of the present invention's the 1st example; Fig. 2 is the amplification longitudinal section of the part of the air pressure regulon in the painting device of load map 1; Fig. 3 is the front view of the air valve in the expression air pressure regulon; Wherein (a) is air valve in the past; (b) be air valve of the present invention, Fig. 4 is the amplification longitudinal section of part of front and the injection nozzle of the needle-valve in the painting device of load map 1, and Fig. 5 is with the whole front view that amplifies expression of the needle-valve of Fig. 4.

Below, specify the 1st example of the present invention according to Fig. 1～Fig. 5.Painting device of the present invention is an example, for example have with the present invention and the automatic low-pressure spray gun body combination of carrying out Long-distance Control or with manual various forms such as spray gun combination, but in this example, painting device is described as spray gun.Therefore, below painting device of the present invention is called spray gun.

The structure of the spray gun of the 1st example at first, is described.Spray gun 1 of the present invention is to mix, utilize compressed air that the paint atomizing is coated on by the device on the application face compressed air and coating.

And the spray gun 1 of the 1st example has: be provided with the spray gun body 4 of supplying with compressed-air actuated compressed air supply passageway 2 and supplying with the coating supply passageway 3 of coating; Be located on this spray gun body 4, have a coating injection nozzle 6 of the jet 5 of spray paint; Jet 5 is opened and closed, regulates the needle-valve 7 of coating emitted dose.

Existing further explain.The spray gun 1 that forms small-sized pistol shape is formed with: the handle part 8 of controlling spray gun 1; The gun body part 9 of spray paint and compressed-air actuated jet 5 is set and has with handle part 8 continuously.

In addition, be provided with in spray gun body 4 inside from bottom to the jet of handle part 85 through compressed-air actuated compressed air supply passageway 2.

And, be provided with the pneumatic fitting 10 that is connected with compressed-air actuated supply source in the bottom of handle part 8.In addition; Be provided with compressed air supply passageway 2 from this pneumatic fitting 10 to the top of handle part 8; At handle part 8 boundary vicinity, be provided with the air pressure regulon 11 that is in the approximate vertical position, compressed air supply passageway 2 is opened and closed with respect to handle part 8 with gun body part 9.

This air pressure regulon 11 is installed in the installing hole that end shape is arranged 12 that is worn with compressed air supply passageway 2 quadratures of spray gun body 4.This air pressure regulon 11 comprises: valve seat body 14; Valve portion 16 with the seat portion that forms taper 15 contact separations of this valve seat body 14; Through the connecting portion 17 of thin diameter with the air restrictions 18 of the distolateral roller gyroscope-like (or discoideus) that is connected with of the path of this valve portion 16; The spring fastening 19 that is connected with the bigger diameter end of valve portion 16; One end is inlaid on this spring fastening 19, the helical spring 13 of the inner butt of the other end and installing hole 12.

The internal thread part of valve seat body 14 through week in threaded portion 20 and the openend that is formed on installing hole 12 screws togather and is installed on the spray gun body 4.

When seat portion 15 butts of the valve portion that is truncated cone 16 and this valve seat body 14, the valve action that stops air to flow is played by valve portion 16.Among Fig. 2, when spool 21 is pushed to when right-hand, the portion 15 that lifts off a seat of valve portion 16 opens compressed air supply passageway 2.

Path end side in this valve portion 16, the connecting portion 17 through thin diameter is provided with the air restrictions 18 that is made to big footpath.This air restrictions 18 is with valve portion 16 moving axially along installing hole 12.

These valve portions 16, connecting portion 17, air restrictions 18, spool 21 and spring fastening 19 are integrally formed; Receive helical spring 13 in Fig. 2 all the time to the application of force of left; Promptly receive the application of force of utilizing the direction that valve portion 16 seals seat portion 15; In other words, receive the application of force of the direction that compressed air supply passageway 2 is sealed.

Pars intermedia at valve seat body 14 is the left side of air restrictions 18, wears a plurality of circular ports, is combined into 4 peristomes 22 at Ben Chang, will flow through seat portion 15 and to receive the air discharge that air restrictions 18 is controlled.

In addition; At the inner most peripheral shape of valve seat body 14 groove 23 circlewise; Chimeric O type ring 24 in this endless groove 23, thus, when valve portion 16 is sealed; Compressed air can be from installing hole 12 sides, between the inwall of the periphery of valve seat body 14 and spray gun body 4, leak into the compressed air supply passageway 2 in downstream.

The inner diameter of the air chamber 25 of valve seat body 14 is 6.8mm, and on the contrary, the D outer diameter 1 of air restrictions 18 has been made following 4 kinds of trial targets in order to confirm effect of the present invention, has carried out the affirmation test of regulation:

D1A＝6.4mm

D1B＝6.5mm

D1C＝6.6mm

D1D＝6.7mm

The size of other part such as Fig. 3 (b) expression.

Through valve portion 16 being used elastic component such as resins, thereby when compressed air supply passageway 2 is sealed by valve portion 16, can stop compressed-air actuated discrepancy reliably.

In addition, above this air pressure regulon 11 (epimere), be equipped with needle-valve 7 and coating injection nozzle 6 that the injection of coating is regulated.

This needle-valve 7 has the leading section 26 that forms the front end taper at an end of jet 5 sides, has at the other end to withstand on the helical spring 28 on the needle-valve guide 27 to what the action of needle-valve 7 was controlled.This helical spring 28 is to the direction application of force that jet 5 is sealed.In addition, in the place ahead of needle-valve guide 27, the aciculiform packing ring 29 that is used for the gasket coating leakage receives the pushing of packing ring adjustment screw 30.Packing ring adjustment screw 30 is threaded into to prevent the coating leakage and needle-valve 7 is moved smoothly with suitable intensity.

In addition, the coating guideway 32 of setting up the coating joint 31 that is connected with the coating supply source is positioned near the central authorities of needle-valve 7.

In addition, the said needle-valve guide 27 of jet 5 sides and the end of spool 21 and trigger portion 34 butts, this trigger portion 34 has pivot 33 at gun body part 9, is arranged to and handle part 8 almost parallels.Therefore, when trigger portion 34 was pulled handle part 8 sides, the helical spring 13 that is located on the seat portion 15 of air pressure regulon 11 was compressed with the helical spring 28 that is located on the needle-valve 7.

When the helical spring 13 on being located at this air pressure regulon 11 is compressed, just makes the valve portion 16 that is located on the air pressure regulon 11 to helical spring 13 side shiftings, thereby compressed air supply passageway 2 is opened.Like this, compressed air feeds to jet 5 along being located at the compressed air supply passageway 2 on the gun body part 9.

At this moment; The compressed air desire is from air chamber 25 sides of the valve portion of air pressure regulon 11 16 with the gap flow valves seat body 14 of the seat portion 15 of valve seat body 14, but be flowing in and the internal perisporium of the outer peripheral edges of the discoideus air restrictions 18 that valve portion 16 is provided with continuously and air chamber 25 between be restricted in the gap that forms.Its result, even the gap of valve portion 16 and seat portion 15 becomes big, flow also receives the restriction of air restrictions 18, thus the pressure of the downstream part of compressed air supply passageway 2 promptly is constrained to authorized pressure from the air pressure that jet 5 is discharged.

So, when the helical spring on the end that is located at needle-valve 7 28 was compressed, needle-valve 7 slided with the needle-valve guide 27 of tubular.

Like this, because the needle-valve of originally jet 5 being sealed 7 contracts in the inboard of jet 5, so jet 5 is opened, coating is ejected.

Compare with needle-valve 7, valve portion 16 is designed to move slightly ahead of time, and injecting condensed air so compare conveying compressed air slightly earlier with the coating injection, for the regulatory function of compressed-air actuated pressure, specifies in the back.

Then, specify the front-end architecture of the spray gun 1 of this 1st example.Fig. 4 is the cutaway view that spray gun 1 front end is amplified, and Fig. 5 is the enlarged front view of the needle-valve 7 in the spray gun 1.For ease of explanation,, put on same-sign and describe for the constitutional detail of in Fig. 1, having explained.

The front-end architecture of spray gun 1 at first, is described according to Fig. 4.Air cap 35 screw threads of spray gun 1 screw on jet 5.Through hole 36 peripheries at the center that is located at of this air cap 35 are provided with roughly a plurality of aperture 37a～37d forwards, in addition, at the position away from air cap 35 centers, are provided with a plurality of aperture 37e～37h that in tiltedly, just wear.Mainly from these through hole 36 ejections, compressed air sprays from the aperture 37a～37d that is located at periphery coating.

And coating spreads along with the compressed air of ejection.Thus, liquid is sprayed and the phenomenon of corpusculed is called atomizing.

Coating injection nozzle 6 is positioned at the inside of through hole 36.This coating injection nozzle 6 comprises: along with from jet 5 to coating injection nozzle 6 inboards, first tapering 38 that diameter reduces gradually; Along with more to the inside from this first tapering 38, second tapering 39 that diameter increases gradually; Along with more to the inside from this second tapering 39, the third hand tap portion 40 that diameter increases gradually.

In addition, bar-shaped valve shown in Figure 5 is that needle-valve 7 is inserted and led to the inside at coating injection nozzle 6.This needle-valve 7 comprises: the leading section 26 that forms the front end taper; With the continuous emitted dose restrictions 41 that constitutes by same diameter of leading section 26; With the continuous open and close valve portion 42 of this emitted dose restrictions 41.This emitted dose restrictions 41 is continuous at the private side and the leading section 26 of injection nozzle 6, forms to have added certain surplus (specific length of 1～2mm) and have identical diameter.

In addition, open and close valve portion 42 has the angle cone angle littler than third hand tap portion 40, and diameter increases from the interior side of jet 5 to coating injection nozzle 6 gradually.

In addition, the leading section 26 of this 1st example is coniform.Also can the length r of the bus of leading section 26 be made as 0.5mm, the front end angle [alpha] is made as 80～85 degree.Especially the front end angle [alpha] is made as 83 when spending, the spray regime of coating greatly improves.

In addition, as shown in Figure 1, the helical spring 28 of the needle-valve 7 of this 1st example is that the first different helical spring 28a of mutual spring constant and the second helical spring 28b are combined.

The spring constant of the first helical spring 28a of this example is done lowlyer than the second helical spring 28b.But this first helical spring 28a also can make spring constant than the high helical spring of the second helical spring 28b, and is certain also opposite.

And the first helical spring 28a contacts with needle-valve guide 27, and the end of the second helical spring 28b is connected with the first helical spring 28a, the inwall butt of the other end and guide chamber 43.The purposes of this guide chamber 43 is to accommodate base end side and the 2nd helical spring 28a and the second helical spring 28b of needle-valve guide 27.

And when the F that exerts oneself from the state of Fig. 1 pulled trigger portion 34, the first helical spring 28a received the pushing of the needle-valve guide 27 that rearward slides.In addition, along with the slip of needle-valve guide 27, power F also passes to the second helical spring 28b with guide chamber 43 inwall butts.Like this, this power F is delivered to the inwall of guide chamber 43, and its counter-force F acts on the second helical spring 28b.Therefore, the first helical spring 28a and the second helical spring 28b both sides are compressed.At this moment; The identical power of effect on the first helical spring 28a and the second helical spring 28b; But because two helical spring spring rates are different, thus trigger portion 34 to the operation of terminal stage, the compression ratio (length of compression) of the first helical spring 28a and the second helical spring 28b is different.

That is, the helical spring 28 of this example can be thought the operational phase through following three phases: cocking portion 34 and mainly with phase I of first helical spring 28a compression; Cocking portion 34 and in the compression first helical spring 28a, this stage mainly with the second stage of second helical spring 28b compression; The phase III (terminal stage) that the first helical spring 28a and the second helical spring 28b both sides are compressed fully.

Therefore, can carry out following operation: the phase I mainly making first helical spring 28a compression, only make blast injection; Then, except the first helical spring 28a, when making the second helical spring 28b be compressed in the way; The amount of limit compression air capacity and coating; Spray ormal weight,, can carry out the amount of big ground injecting condensed air amount and coating when the first helical spring 28a and the second helical spring 28b are compressed to when last.

Certainly; From the operation of initial stage to the mid-term stage of trigger portion 34, can carry out the fine setting of needle-valve 7 with less power easily, can be described as what is called " half-clutch state "; Because of this state is arranged, so can easily carry out with the application of being given deep or light gradual change by the border of application face and old application face.

In case cocking portion 34, then needle-valve 7 is opened the jet 5 of coating injection nozzle 6 thereupon to needle-valve guide 27 inner slide.

Illustrate in greater detail, through operating trigger portion 34, the valve portion 16 of air pressure regulon 11 just is opened as stated at present, with regard to injecting condensed air, roughly meanwhile, mainly the first helical spring 28a is compressed.This moment, needle-valve 7 slips and entering paint were penetrated nozzle 6 inside.

Like this, so far second tapering, 39 both sides' of the tapering of the open and close valve portion 42 of needle-valve 7 and coating injection nozzle 6 tapering suitably makes chimeric state dislocation, between both sides' tapering, produces small gap.At this moment, the emitted dose restrictions 41 of needle-valve 7 is positioned at first tapering 38 of coating injection nozzle 6.

At this moment, when needle-valve 7 and the first helical spring 28a were above-mentioned the 1st state, compressed air began to spray from jet 5.

Continue operating trigger portion 34, when the second helical spring 28b also began to be compressed, needle-valve 7 was further to needle-valve guide 27 inner slide that are in coating injection nozzle 6 inside.

Like this, the gap in the emitted dose restrictions 41 and second tapering 39 further enlarges.When this state, the coating of appropriate amount and compressed air spray from jet 5.

And when the first helical spring 28a and the second helical spring 28b became complete compressed state, the leading section 26 of needle-valve became and is housed in the inner state of coating injection nozzle 6 fully.

At this moment, compressed air and coating both sides become from the state of jet 5 injection maximums.

Ejector principle, the action of the spray gun 1 of the 1st above-mentioned example are described below.

At first, in the occasion that the spray gun that utilizes the 1st example 1 carries out deep or light gradual change application, the operator with jet 5 towards by application face hold handle part 8.At this moment, make jet 5 be positioned at old application face (central part) and by the border of application face.In case trigger portion 34 is overcome the application of force of

helical spring

13 and 28 and pulls handle part 8 sides, spool 21 butts of trigger portion 34 and air pressure regulon 11 at first then, and slightly slow with needle-valve guide 27 butts.

And, be the boundary during with trigger 34 butts at first with the spool of air pressure regulon 11 21, make valve portion 16 move to inboard (right-hand side among Fig. 2) through spool 21 → air restrictions 18 → connecting portion 17 successively.Like this, valve portion 16 and seat portion 15 are separated from contact condition, and the compressed air that the below is sent here from figure through the gap that produces between the two flows out to air chamber 25 sides.At this moment; Owing to be restricted between the internal perisporium of air chamber 25 and the outer peripheral face of air restrictions 18; The pressure of seeing and be imported into the compressed air supply passageway 2 of spray gun 1 from air compressor off is depressurized ormal weight, is passed out to the compressed air supply passageway 2 in downstream through peristome 22.

When the firm opening of valve portion 16 (half-clutch state), but the compressed air that stable supplying pressure is restricted.

On the other hand, be the boundary during with needle-valve guide 27 and trigger 34 butts, needle-valve 7 slides and gets into the inboard.

That is, sealed in the past in the needle-valve 7 withdrawal gun body parts 9 of jet 5, thereupon, the jet of being sealed in the past 5 is opened.

In addition, the coating in the coating guideway 32 is from jet 5 ejections.At this moment, as previously mentioned, the compressed air after being depressurized sprays slightly earlier, and therefore, coating is atomized by the compressed air of suitable amount from the beginning.

And; The effect of the air restrictions 18 of the air pressure regulon 11 through this example; Can make pressure be reduced to the pressure that is suitable for deep or light gradual change application from the state that valve portion 16 has just carried out opening when action; And according to the pulling action of trigger portion 34 pressure is slowly risen, therefore, this obtains good balance with the coating supply that utilizes the coating regulon to carry out.

Promptly; Coating injection nozzle 6 and needle-valve 7; Second tapering of its coating injection nozzle 6 and the emitted dose restrictions 41 of needle-valve 7 are not same inclined plane (conical surfaces), but the external diameter of emitted dose restrictions 41 is same diameter, therefore; Even needle-valve 7 contracts in the inside of coating injection nozzle 6, second tapering 39 also becomes roughly certain with the gap of emitted dose restrictions 41.

Therefore, from be located at aperture 37a, 37b, 37c, 37d and aperture 37e on the air cap 35,37f, 37g, 37h respectively the compressed and supplied air can spray the coating with the said compressed-air actuated flow amount of adapting through emitted dose restrictions 41.

Like this, can not as technology in the past when just spraying coating atomize fully and just spray with state than macroparticle.

The invention is not restricted to the 1st above-mentioned example, can do following such distortion.

Promptly; Spray gun 1 its air pressure regulon 11 of the 1st example is configured in 2 sections position up and down with the coating regulon; The air pressure regulon also can be on the axle identical with the coating regulon, but the unit that one constitutes needle-valve and the compressed air supply passageway is opened and closed or regulates.

Yet; According to the experiment that the present inventor did; In vapour-pressure type spray gun in the past, in the occasion of needle-valve being regulated 2 weeks of 71 rotations of handling knob, when the pressure of transformer is 0.35Mpa from full-shut position; This pressure reduces to 0.22Mpa under half-clutch state, under valve portion full-gear, reduces to half the approximately 0.18Mpa.On the contrary; In vapour-pressure type spray gun of the present invention; Can understand: when the pressure of transformer is 0.35Mpa, be 0.3Mpa under half-clutch state, under valve portion full-gear, stop at 0.25Mpa; The pressure of transformer only differs 0.1Mpa relatively, respectively reduces smoothly with 0.05 with half-clutch difference with valve portion standard-sized sheet.

On the other hand, in vapour-pressure type spray gun in the past, if become half-clutch state from the pressure of transformer, then pressure reduces 0.13Mpa, if become full-gear from half-clutch state, then is reduced to 0.04Mpa.

This shows that in vapour-pressure type spray gun in the past, the amplitude of the half-clutch state of trigger portion is narrow, in leaving the process of trigger portion, air pressure sharply descends, and that is to say, has shown the difficulty of keeping half-clutch state.

On the contrary, adopt the vapour-pressure type spray gun of the 1st example, can make air pressure under the so-called half-clutch state carry out delicate variation on a large scale easily.

In addition; In spray gun in the past, after needle-valve being regulated handle knob rotation 3/4 (0.75 circle) to be opened, made coating (solvent) ejection 70g through 115 seconds; But rotation 1.5 circles open after 51 seconds, rotation 2 circles are opened after made coating (solvent) ejection 70g in 39 seconds, sharply increase in this paint output.

That is to say that in vapour-pressure type spray gun in the past, the spray volume with coating is less at first, surpass certain rapid characteristic of increase when a bit.If change a kind of view, then when beginning as half-open position minimizing spray volume from full-gear, spray volume just sharply reduces.

On the contrary, if adopt the present invention's the 1st example, then can confirm: when beginning as half-open position minimizing spray volume from full-gear, spray volume reduces gradually.

In addition, spray gun in the past, the paint output too has difference, and the interval of scalable spray volume is too little, and experiment shows and is very difficult to carry out half-clutch operation.

Therefore, in vapour-pressure type spray gun in the past, when partly carrying out deep or light gradual change application to deep or light gradual change from central division, the thickness of filming just sharply tilts.

Expertly be coated with is one of skill of deep or light gradual change coating with having levels.

For realizing this form of filming, regulate the degree of handling knob and the spray volume of coating is passed standard-sized sheet smoothly deep or light gradual change processing ease is carried out according to opening needle-valve.

The 1st above-mentioned example is meant, regulates the rotation 1 of handling knob from needle-valve and encloses to standard-sized sheet, and coating is with level and smooth state ejection, so long as this state just carries out half-clutch operation easily.

Generally, in the occasion of carrying out deep or light gradual change application with the vapour-pressure type spray gun, central part and deep or light gradual change portion carry out with the flow process of continuous spray gun operation, and this is unescapable operation.

Must carry out the operation of this continuous spray gun, and must the drying property of filming of central part and deep or light gradual change portion be made the same terms.

For realizing this purpose, the present inventor makes air pressure and the air pressure of central part under the half-clutch state of deep or light gradual change portion produce pressure differential, and is conceived to through compare the drying property that the air pressure that reduces deep or light gradual change portion postpones to film with central part.

But, when deep or light gradual change, must form thin filming smoothly, when with the same terms (air pressure), when equal state is filmed, owing to drying property accelerates, so in vapour-pressure type spray gun in the past, can not reproduce this operation under the same conditions.

On the contrary, in the present invention,, produce the function that the spray gun operation is carried out continuously and air pressure is descended, promptly produce the function that the air pressure under the half-clutch state descends continuously for satisfying above-mentioned condition.

More than, represented the structure and the effect of an example of the employed spray gun of application step (painting device) of finishing system of the present invention.

Below, the example of the employed drying device of drying steps of finishing system of the present invention is described.

Fig. 6 is the key diagram of general configuration of drying device of a part that constitutes the formation finishing system of the present invention's the 2nd example; Fig. 7 is the key diagram of the heating-pipe structure of expression drying device shown in Figure 6; Fig. 8 is that the front view of major part structures such as body and heating tube is divided in basket, the reflection of the drying device of expression the 2nd example; Fig. 9 is the pattern cutaway view of the major part structure of the drying device shown in Figure 8 seen from the top; Figure 10 is that the pattern cutaway view of major part structures such as body and heating tube is divided in basket, the reflection of the drying device shown in Figure 8 seen from the side, and Figure 11 is the rearview that expression is installed in the basket of the 2nd example the state on the movable stand.

Existing with reference to accompanying drawing 6～Figure 11, an example of the employed drying device of filming of finishing system of the present invention is described.

The 110th, the basket that front shape is rectangle is seen from the side, comprises trapezoidal 110a that forwards enlarges and the rectangular portion 110b that is rectangle.Inside at this basket 110 has: lid member 114, and it has to the place ahead that body 112 is divided in the reflection that is used to accommodate a plurality of (3) and expands the depth of opening; Body 112 is divided in a plurality of reflections, and its spaced-apart predetermined distance ground constitutes ventilation space (required air-supply is used the gap with space or air-supply) and is fixed on the assigned position that covers in the member 114 through not shown stator.116 are provided in a side of the cowling panel of these ventilation space 118 outlet vicinity, play the function that the air that blows out is flowed and carries out rectification.

A plurality of reflections are divided body 112 and are comprised: each center front reflector 123; Upper surface reflector 124; Lower surface reflector 126; Be positioned at a pair of side reflector 128 at (these 3 reflectors of following general name are " front reflector 122 ") front reflector 122 two ends.The direction that upper surface reflector 124, lower surface reflector 126 and a pair of side reflector 128 forwards enlarge tilts, and can heat and the emission spectrum wavelength that heating tube H is sent out be reflexed to front side.On a pair of side reflector 128, be equipped with slotting logical opening in the position of the not shown in detail same position that becomes symmetry mutually.And, a pair of portion of terminal C that inserts the two ends that lead to the slotting logical heating tube H of opening (diagram is omitted) of this a pair of side reflector 128, and give prominence in the ventilation space (required air-supply is used the gap with space or air-supply) 118 in the outside of a pair of slotting logical opening.

As shown in Figure 9, the portion of terminal C of heating tube H is through in the ventilation space (required air-supply is used the gap with space or air-supply) 118 that is projected into the outside, thus receive from after the aerofoil fan (blowing unit) 134 stated air-supply and be cooled.Heating tube H can continue the heating of maximum capacity through the portion of terminal C cooling at its two ends, can this heating temp be brought up to and for example send more than 600 ℃ of far infrared.

In addition, in the rear side that body (in this example be combined into 3) 112 is divided in each reflection, the large-area air-supply that forms the backside area that comprises each reflection division body 112 and have a regulation depth is with space 136.This air-supply is fed to each reflection with space 136 with wind and divides the ventilation space of the lateral surface side of body 112 (required air-supply is used the gap with space or air-supply) 118; Become the air-supply basic point territory of the portion of terminal C of each heating tube H being cooled off, is used for wind is sent film (diagram is omitted, and for example is coated on filming on the vehicle) in the place ahead of giving basket 110 on one side on one side.Be large-area air-supply in air-supply basic point territory with the rear side in space 136 be rear side, like Fig. 9 and shown in Figure 10ly be fixed with a plurality of aerofoil fans 134 with motor 138.Rear side at each motor 138 is provided with the filter pressing plate 144 that has formed a plurality of suction holes 142, utilizes the fixedly filter (with reference to Fig. 9 and Figure 10) 152 used of dedusting of filter bearing 146.Between the filter 152 that each motor 138 and dedusting are used, also form breathing space 154.

Shown in figure 11, the back side of basket 110 is equipped with respect to rotating the 1st rotor 162 of not shown trunnion axis.The stationary state of the 1st rotor 162, the rotation to a direction through handle 164 is disengaged, and basket 110 becomes around trunnion axis and rotates freely, and through the rotation round about of handle 164, the direction around trunnion axis of basket 110 is fixed.In addition, at the back side of basket 110, be equipped with respect to rotating the 2nd rotor 166 of not shown vertical axis.The stationary state of the 2nd rotor 166 is disengaged through the rotation to a direction of handle 168, and basket 110 becomes around the vertical axis rotation freely, and through the rotation round about of handle 168, the direction around vertical axis of basket 110 is fixed.

Shown in figure 11, the 2nd rotor 166 is with to be fixed on fulcrum on basket 110 back sides chimeric and connect into rotatable.On the 2nd rotor 166, be fixedly connected with the distolateral of two parallel arms 172.The opposing party's front of each arm 172 is connected with the turning cylinder of the pillar 176 of movable stand 174.In addition, in the centre position of each arm 172, connecting the upper end of supporting arm 173 with rotating state.The lower end of this supporting arm 173 is with to be formed on sliding tray on the pillar 176 chimeric and can slide up and down along it.Thus, basket 110 becomes up and down movably state.In the occasion that basket 110 is set in the desired height position, do not slide for the bottom that makes supporting arm 173 and for example to use lock screw to fix.The lower end of above-mentioned pillar 176 is fixed on the substructure member 175 of movable stand 174.

Downside at substructure member 175 is provided with 4 wheels 177, and the integral body that constitutes movable stand 174 moves freely on the ground.This wheel 177 has braking function, after the position to drying device positions, brakes, and can keep this position.

As stated, basket 110 rotates arbitrarily through making the 1st, the 2nd brake body 162,166, arm 172, supporting arm 173, except posture shown in Figure 11, can be set at various towards.And, because movable stand 174 has wheel 177, thus can for example on the ground of application factory, freely move, through wheel 177 is braked, can be with fixing with respect to the position of filming.

Now but face explanation efficient is set the drying device of the condition that is suitable for filming well.Shown in figure 12, have the control part 100 that constitutes by CPU (central arithmetic processing apparatus).Be connected with on this control part 100: the timing portion 192 that the process of the stipulated time (for example film and reach the time of 100 ℃～130 ℃ of left and right sides temperature) after the heating of heating tube H is begun is carried out timing; With basket 110 and the numerical key imported of the distance between filming (digital switch or potentiometer also can) 194 as input block; The rotating speed adjustment part 196 that the rotating speed of unit interval of aerofoil fan 134 is adjusted.

Especially, rotating speed adjustment part 196 is accepted the computing structure of control part 100 and the rotating speed of aerofoil fan 134 is controlled.Promptly; For the rotating speed of aerofoil fan 134 is adjusted; Rotating speed adjustment part 196 supplies to motor 138 with best electric power, is 1.0～3.0m/s, the best wind speed more than the 1.2m/s with film location (for example leaving the position of 40～70cm) the acquisition wind speed that is coated with in basket 110 the place aheads.

In addition, in drying, be not only wind speed, air quantity also becomes important factor.That is, when application face was 1m * 0.7m, air quantity was necessary for 35～50 liters/minute, is preferably 40～44 liters/minute, in the area different occasions, should consider that its area changes air quantity.

Control part 100 according to basket 110 with film between the temperature (for example design temperature according to the capacity of the capacity of 1.1KW or 5.6KW and different) of heat generating part 132 of input value and heating tube H of distance; Seek pairing data the guide look data of distance that is write down and the relations that are coated with film temperature such as form of the ROM on being located at control part 100; Decide to film based on these data to reach for example 100 ℃～130 ℃ time, the heat with the absorbing wavelength territory in the stipulated time that is determined blows to coated surface.Then, under the metapyretic state of heating tube H, the timing time that the rotation of setting shaft flow fan 134 begins, and this timing time carried out timing.In addition, at the appointed time, control part 100 is only to the heating tube H driving of switching on; Then, after the motor that makes rotating driveshaft flow fan 134 138 startings, timing portion carries out timing 192 pairs of drying times of filming; When reaching drying time, the heating of heating tube H is finished.

The action of the drying device of filming of explanation the 2nd example below.At first, the operator is set at the distance of reassigning with the front surface of basket 110 and the distance of filming between (for example being coated on filming on the vehicle).For example, if just set the distance of 40cm winter, if just set the distance of 70cm summer.Perhaps,,, make the scope of 10～20cm,, make the scope of 45～70cm, and measure with chi etc. and to set in the occasion that is the 5.6KW capacity for example in the occasion that is the 1.1KW capacity according to the capacity of employed heating tube H.Utilize numerical key 94 these measured values of input.Then, the power supply input switch of each heating tube H (diagram is omitted) is operated made heating tube H heating.In the heating of heating tube H, for example supply with maximum power to obtain 600 ℃ temperature of maximum capacity.In addition, timing portion 192 picks up counting simultaneously.So; Utilize the heating of heating tube H and the emission spectrum wavelength of the best given film; When the temperature of filming reaches for example 100 ℃; When passing through the stipulated time again, timing portion 192 gives control part 100 with count end signal, and control part 100 is supplied with the output of informing the starting beginning to rotating speed adjustment part 196.Its result, rotating speed adjustment part 196 makes motor 138 startings, to be coated with the air-supply that film location for example can obtain the wind speed more than the 1.2m/s to the instruction that the motor 138 of driving shaft flow fan 134 sends supply capability.As shown in Figure 9; Starting along with motor 138; The rotation of aerofoil fan 134; The ventilation space (required air-supply use the gap with space or air-supply) 118 in the outside of body 142 is divided in each reflection of the distinguished and admirable mistake of regulation wind speed, on one side the portion of terminal C of heating tube H is cooled off, for example the air-supply more than the 1.2m/s blows to and films on one side.

Therefore, drop to the temperature about for example 60 ℃～70 ℃ and be maintained at this temperature, reach the optimum drying condition, can carry out the drying of shorter time so film owing to be coated with film temperature.And, utilize 192 pairs in timing portion to film to reach dry effluxion to carry out timing, through the control of control part 100, supply with the output of informing proceed-to-send to rotating speed adjustment part 196.Its result, rotating speed adjustment part 196 stops the supply capability to heating tube H, stops then the electric power of motor 138 is supplied with, and the rotation of aerofoil fan 134 is stopped.

In this example; Through import heating tube H as the operation of the numerical key 194 of input block and film between distance; But for this device; Be not what to leave no choice but as the numerical key 194 of input block, the operator also can at random set through basket is moved with movable stand 174 (comprising heating tube H) 110 at any time should distance.

In this example; The C of two end terminals portion of heating tube H is projected in the ventilation space (required air-supply is used the gap with space or air-supply) 118; Use from the air-supply of aerofoil fan 134 and cool off, therefore, the heat generating part 132 of heating tube H continues heating with maximum capacity; And can continue to shine the far infrared of best emission spectrum wavelength, can further shorten the drying time of filming.

In addition, utilize the timing of timing portion 192, for example reaching in the temperature of filming, 100 ℃ the moment makes aerofoil fan 134 rotations; In air-supply more than 1.2m/s or the area of 1m * 0.7m, through with 35～50 liters/time air quantity blow to and film, make the temperature of filming drop to 60 ℃～70 ℃; And this temperature is remained on 10 ℃ with interior scope, therefore, see from this point; Best environmental condition also can be provided, can further shorten drying time.

Figure 13 is the performance plot of the infrared absorption spectrum of expression water, and Figure 14 is the performance plot of the infrared absorption spectrum of expression xylenes, and Figure 15 is the performance plot of the infrared absorption spectrum of expression toluene.

Performance plot for these infrared absorption spectrums can be understood, has the low wavelength of transmissivity, in other words, has the high wavelength of absorptivity (absorption peak wavelength).

This may be interpreted as: when to material irradiation infrared ray; The energy of the molecule absorption light of constitute; State by quantized vibration or rotation changes; Therefore, the ultrared energy that sees through behind certain material (or by material reflection) compares a little less than the infrared ray that is shone, and its amount that weakens is the energy that is used to change the molecular motion state.

Therefore; The present inventor is conceived to this ultrared absorption spectrum; In the occasion that makes water (ionized water) as the aqueous coating solvent; Can know from Figure 13, owing to have bigger absorption peak wavelength near the 3 μ m and near the 6 μ m, so be conceived to use the heater of the heat emission of the wavelength domain (for example 2.5 to 11 μ m) that comprises this wavelength and constitute broader area.

That is, in the past, have the big more such idea of easier drying of heat (temperature) of heat-generating pipe, like this, power consumption suddenly increases.

In addition, be that the infrared absorption spectrum of xylenes and the infrared absorption spectrum of toluene are learnt from the solvent of Figure 14 and Figure 15, there is the absorption peak wavelength near the 3.5 μ m and near the 7.5 μ m.

Therefore, find as long as the design heating tube is so that comprise the absorption peak of above-mentioned absorption spectrum as the luminescent spectrum of the heating tube of heater.

To the different coating material of the heating tube that sends the far infrared linear light, measured the temperature rising characteristic, obtained like the result in the following table 1.

Table 1

The common place of these heating tubes is in copper pipe, to accommodate nichrome wire and form.

According to the mensuration result of this table 1, the temperature of the heating tube of " no coating " rises fast and temperature also reaches the highest, but the peak value of beam split radioactive nature is in the shortwave strong point, the long wavelength territory more than 3 μ m, and radiation illumination is low-level, therefore, drying property descends.Secondly can know, implement the beam split radioactive nature of the heating tube of " nickel " coating, in these coatings, be best.In addition, the heating tube of having implemented " aluminium oxide, iron oxide " coating is only second to " nickel " coating and can obtains higher temperature, but wants the expensive time to obtaining the regulation heat, can not guarantee dry required effective heat.

Through promoting the heat capacity of heating tube itself, extending EWL territory.

But, if the lifting capacity just has the problem of the lost of life.

Therefore, the present inventor verified heating tube the terminal part because of the aging new reason of heat.

That is,,, solve the problems referred to above, be made into and have the heating tube in EWL territory to greatest extent through the terminal part of cooling heating tube based on verifying of this new reason.Thus, can improve the capacity of heat, can be that the heating tube of 1.4KW～1.6KW further rises to 1.7KW～1.8KW for example, and the EWL territory (efficient heat generation territory) of heating tube is extended to 850mm～900mm from 800mm current heap(ed) capacity.In addition, the surface temperature of heating tube was about 500 ℃ in the past, but can improve about 100 ℃ and make about 600 ℃.Therefore, can come to increase significantly relative radiating irradiation degree density through the relative radiodensity that improves heating tube.As above result, can the spectrum of heating tube be made respectively: capacity 1.7KW～1.8KW, 550 ℃～600 ℃ of surface temperatures, effectively long (efficient heat generation is long) 850mm～900mm, add heat density about 5.5.Therefore, can make have function to greatest extent heating tube as drying device.

Figure 16 is the front view of the drying device major part structures such as basket, heating tube of expression the 3rd example.

With the surface temperature of the heating tube of this drying device 3 intervals that are divided into vertical A～C shown in figure 16,5 intervals of horizontal 1～5 and the result who measures be illustrated in the table 2.

Table 2

	1	2	3	4	5
						A	650	640	640	630	640
B	630	650	660	640	640
						C	640	640	640	650	630

According to this result, maximum temperature is 660 ℃ of B-3 interval (central portion), and minimum temperature is C-5 interval (bottom righthand side) and B-1 interval (left central portion) 630 ℃, and mean temperature is 641 ℃, and can saying so roughly uniformly, exothermic temperature distributes.

Then; The infrared drying that becomes the basic data of the drying device that constitutes the application inventor's exploitation has the specification of specified 200V, power consumption 800W, caliber 12.5mm, pipe range 380mm with heater; Accommodate nichrome wire in the copper pipe of heat generating part; Have the nickel coating of 100 μ m on the surface of this copper pipe, be referred to as " standard items " below.These standard items are referred to as No.3 as measuring the test portion article.

The present inventor has made various mensuration to the test portion of below table 3 expressions except these standard items No.3.

Table 3

In above-mentioned table 3, the test portion of No.1 is that being coated with quartz on every side of glass tube that contains nichrome wire in inside forms.

The test portion of No.2 be heat generating part be carbon and accommodating on the glass tube of carbon coating is quartzy to form.The test portion of No.3 is the heating tube of standard items of the present invention, is that the surface coated nickel at the copper pipe of accommodating nichrome wire forms.The test portion of No.4 is that heat generating part is nichrome wire and forms at the surface coated silica flour of glass tube.The test portion of No.5 is to accommodate nichrome wire as heat generating part in the inside of earthenware to form.The test portion of 3-120 μ is in the test portion of No.3, the thickness of the coated film of nickel to be increased to 120 μ to form.The test portion of 3-80 μ is in the test portion of No.3, the thickness of the coated film of nickel to be increased to 80 μ to form.

(1) at first; In the heating tube of the test portion No.3 that becomes standard; Connect the electric power of voltage 200V, electric power 780W; In the position of leaving heating tube 600mm, with Japanese beam split monochromator (CT25GTM) the branch light emission illumination of 3.0 μ m～8.0 mu m ranges is measured, measure the result and be illustrated among Figure 17.

In Figure 17, transverse axis is represented wavelength (μ m), and the longitudinal axis representes to radiate illumination (μ W/cm2/nm).Can know that from this Figure 17 radiation has peak value near 3 μ m of the absorption peak wavelength that has water.At wavelength 8 μ m is about 20% of peak value.Variation between wavelength 3 μ m and the 8 μ m is mild, cannot see extreme concavo-convex.Especially, near the peak value 6 μ m of the bigger absorption spectrum of the next one of water, owing to be about 45% of peak value, so can carry out effective dry to moisture.

Then; Infrared drying with standard test portion No.3 is used heater; Make to apply electric power to drop to specified about 80% be the ratio of 650W and specified about 60% value that is the branch light emission illumination of 500W when lighting a lamp when lighting a lamp with the electric power of specified output (200V, 800W), the characteristic curve of the radiation illumination relative value of representing (with the occasion of rated value as 1.00) is illustrated among Figure 18.

The infrared drying of this moment becomes 650 ℃ with the temperature of the pipe of heater when applying rated electrical 800W, when applying 650W, become 597 ℃, when applying 500W, becomes 543 ℃.Radiation illumination during 650W is near the 3.1 μ m, and the radiation illumination during 500W is near the 3.4 μ m, have slightly to change, but owing to almost do not produce deviation with the absorption of water peak wavelength, so do not influence dry efficiency.

Then, the relative radiation illumination characteristic with respect to the test portion No.3 that become above-mentioned standard of the various infrared dryings shown in the table 3 with the branch light emission illumination of heater is illustrated among Figure 19.

That is, Figure 19 is with separately rated voltage test portion No.1, No.2, No4, branch light emission illumination when No5 lights a lamp being left the diagrammatic sketch that result that the branch light emission illumination apart from the position of 600mm compares is expressed as curve when with rated voltage (200V, 800W) standard test portion No.3 being lit a lamp.

According to this Figure 19, the branch light emission illumination of all test portions except test portion No.2 is the level that is lower than standard test portion No.3 at the whole wavelength domain of measuring.Its radiation illumination also is lower than standard test portion No.3 in the long wavelength zone of the ratio wavelength 4.2 μ m length of test portion No.2.

The radiation illumination of test portion No.1 is about 70% of standard test portion No.3 in the scope of wavelength 3 μ m to 5 μ m, but increases in the wavelength domain more than wavelength 5 μ m, near wavelength 7 μ m, is about 90%.On the other hand, the radiation illumination of test portion No.2 sharply increases below wavelength 4.5 μ m, at wavelength 3 μ m, becomes more than 2 times of standard test portion No.3.This can think that the radiation of carbon heating body sees through quartz ampoule and forms.

In addition, the radiation illumination of test portion No.4 is below 50% of standard test portion No.3 in the scope of wavelength 3 μ m to 5.5 μ m, more than wavelength 5.5 μ m, just increases, about being 70% near the wavelength 7 μ m.Test portion No.4 is owing to be the tungsten lamp bubble, so the major part of radiation concentrates on below the wavelength 20 μ m, the radiation main body of this wavelength domain is estimated to be the outer tube from dual pipe.The radiation illumination of test portion No.5 is below 30% of standard test portion No.3 at wavelength 3 μ m, but is increased to about 80% of standard test portion No.3 at wavelength 5.5 μ m, more than wavelength 7 μ m, then reaches about 90%.But the temperature of the test portion No.5 non-constant that rises is owing to make radiation illumination become main point cost more than 20 minutes, so be inappropriate for drying device.

So; Various infrared dryings for Figure 19 are used heater, according to the relative radiation illumination characteristic of measuring with respect to standard test portion No.3, if standard test portion No.3; Then can make the molecule activity in the aqueous coating active, the polymerization between the molecule in the coating is accelerated.

In addition, test portion No.2 also sends the branch light emission illumination that is far longer than standard test portion No.3 in the zone of 3.0 μ m～4.2 μ m, but lower to the radiation illumination in the zone of the long wavelength more than the effective 4.5 μ m of drying, so distinguished that drying efficiency is poor, no practicality.

Strengthen radiation illumination (density), improve the density that improves drying machine (heater) with respect to the radiant of filming exactly the radiation relative illumination of filming; For example; As long as make the distance of heater and coated surface approaching, just can improve this illumination density, perhaps improve heater capacity and carry out.But present circumstances is, when the distance that makes heater and application face near the time, the temperature of application face just rises to more than 100 ℃, is coated with the elongation of the resin, bonding agent or the steel plate that are contained on the automobile etc., becomes the reason that breaks down.In addition, improve the electrical capacity that this mode of density need be set up factory through the capacity (power number) that increases heater, to suitable funds of increase such as electrical equipments, hope does not increase electrical capacity as far as possible, and makes distance not too closely improve drying efficiency.

Therefore, the present inventor has measured infrared drying with heater and the be dried different interval of face and the relation of radiodensity, and the result is illustrated in the following table 4.Radiodensity when the expression of this table 4 makes 600mm with the heater of standard test portion No.3 and the distance between face of being dried is as 1.00 relative value.

Table 4

Distance (mm)	Relative illumination (350mm)
		300	?3.49
400	?2.12
		500	?1.41
600	?1.000
		700	?0.745
800	?0.576
		900	?0.458

Survey its relative illumination in advance even variable in distance also can convert simply through the distance shown in the his-and-hers watches 4 and the relation of relative illumination.For example, when the distance of test portion No.3 near 500mm, then relative illumination is 1.41 times.

Then, in order to seek the dry essential factor (efficient activity) of aqueous coating, the water cloth that will give up is got wet, is posted on the bodywork surface of automobile, is provided with under the state of heater (drying device) in the position of leaving said useless cloth surface 70cm, carries out following mensuration.

The purpose of this mensuration is exactly, and is relevant with solvent or ion evaporation of water through the passing that makes water evaporates as the basis of the drying property of the coating that has used wind, proves in the system of the present invention it is the heater that how to be suitable for water paint.

As (checking) method of mensuration, use the little useless cloth of mesh, utilize the state of being got wet by water and used the weight of the state behind the heater, the hand of drying regime to judge drying property.

Concrete condition is:

(1) heater is switched in advance, rises to set point of temperature in advance;

(2) distance between heater and useless cloth is 70cm;

(3) as making the dry pattern of useless cloth, be divided into following several kinds and measure:

1) " pattern 1 " is the pattern of only heater being switched on;

2) " pattern 2 " is to begin to shine heat by heater, the pattern of after 30 seconds, utilizing fan to blow;

3) " mode 3 " is to begin to shine heat by heater, the pattern of after 45 seconds, utilizing fan to blow;

4) " pattern 4 " is to begin to shine heat by heater, the pattern of after 60 seconds, utilizing fan to blow;

5) " pattern 5 " is to begin to shine heat by heater, the pattern of after 90 seconds, utilizing fan to blow;

At first, to be illustrated in outside air temperature be that 24 ℃, humidity are to carry out 7 minutes water evaporation quantity and measured results of evaporation rate before and after dry when dry according to above-mentioned 5 patterns under 65～70% the environment to table 5.

Table 5

According to above-mentioned table 5, Figure 20 representes the state after the evaporation rate with different mode makes curve.

Learn that from above-mentioned table 5 and Figure 20 what evaporation rate was best is mode 3, secondly good is pattern 4.That is, the heat of flat-out heater that only will reach the regulation heat is to irradiation on the useless cloth cover 45 seconds, then, under the state of the heat of irradiation heater, utilizes fan to see the pattern of the wind of regulation air quantity and wind speed off immediately, and is best to the drying cloth that gives up.In addition, for pattern 4, the heater heat that only will reach the regulation heat utilizes fan that the wind of regulation air quantity and wind speed has also been obtained good result to the occasion of useless cloth cover at once to irradiation on the useless cloth cover 60 seconds then.For pattern 5; Only the heat with heater is radiated on the useless cloth cover and after 90 seconds; Evaporation rate during putting in blast is lower than mode 3 and pattern 4, and this is identical with the situation that only is heater, and perhaps its reason is because in the give up heart portion or the residual cause that moisture is arranged of rear side of cloth.

Then, as stated, should understand fully the drying regime of useless cloth, after the surface temperature of useless cloth has been carried out measuring, obtain the such result of table 6.

The surface temperature of the useless cloth of table 6 (℃)

And Figure 21 representes said table 6 is made the state behind the curve.

According to Figure 21, pattern 1 only the heat of heater is shone directly into the occasion on the useless cloth, become the highest temperature, then, be combined into high temperature in the field of the warp after-blow air-out in 45 seconds of mode 3.

The heat distribution of heater used herein, the occasion of under total power, using has at the face that leaves 60cm and rose to 65 ℃～75 ℃ through 1 minute～2 minutes, rose to 120 ℃～130 ℃ ability through 6 minutes～7 minutes; But the occasion of being got wet by water at useless cloth; The temperature of moisture rises and becomes very slow, when utilizing the fan blowing, and temperature decline once till 6 minutes front and back; After 7 minutes, temperature begins to rise gradually.

As stated, verified the water evaporation quantity and the surface temperature of useless cloth, the present inventor will be posted in further that the lip-deep useless cloth of automotive door (steel plate) peels and the residual amount state of having confirmed moisture.

At first; Shown in figure 22; To only driving promptly from above-mentioned pattern 1 that heater is radiated at heat that state (a) on the useless cloth peels useless cloth and the state (b) that exposes a surface is observed, confirmed about 80% the residual situation that moisture is arranged of area portions in this exposed portions serve.

On the contrary; Shown in figure 23; Observed and promptly carried out thermal exposure utilizes fan to blow after 45 seconds state (a) by heater from mode 3 and peel useless cloth and expose the state (b) on a surface, having confirmed only to have an appointment with respect to this exposed portions serve, 5% area portions is residual to have moisture.

Learn from above-mentioned, carry out drying, also only evaporate 74% left and right sides moisture at the appointed time, but, can evaporate about 90% moisture through with heat and wind reasonable combination even only apply the heat of heater.

In addition; It is to hold the evaporating state of original moisture that drying regime only depends on the weight of coated article (this is combined into useless cloth); Evaporation through as above-mentioned, observing moisture whether only be the surface or in inside or the back side also can carry out, thereby can derive desirable drying condition.

That is, if the state during the actual application of contrast is being coated with under the state that is contained on the steel plate, moisture has moisture and the residual state for the nubbin in filming that disperses from the teeth outwards.This nubbin only otherwise disperse, and is just moist.Must tackle this moisture retention phenomenon in filming.The present inventor has greatly shortened evaporation time according to the reasonable and usefulness of heat and wind, can obtain good drying regime.

Then, the present inventor is after carrying out application to " aqueous surface (Japanese: water-based サ Off) ", and the weight change when having carried out dried painting object of stipulated time and having carried out air dry with the drying system of above-mentioned that kind has been made mensuration.

Weight change and thickness after 16 ℃～18 ℃, 16 hours of table 7 air dries

Above-mentioned table 7 is that the drying condition with pattern 1～pattern 6 is carried out dried the coated article further variation of the weight after carrying out 16 hours air dry under 16 ℃～18 ℃ and the mensuration result of thickness.Learn that from this table 7 timeliness that reaches the weight in " system 60 " owing to " system 30 ", " system 45 " is changed to 0～0.01, almost do not have that therefore, meaning before getting into air dry has become drying regime fully, has proved it is desirable drying system.Here, so-called

system

30,45 and 60 as stated, is meant that in advance the flat-out heat with heater was radiated on the coated surface through 30 seconds, 45 seconds and 60 seconds, applies the meaning that wind carries out the hot blast irradiation by fan then at once.

In table 7; " hot blast " of so-called " pattern 1 "; The state of finger from beginning at first heater and fan are moved simultaneously, " only the utilizing heat " of so-called " pattern 2 " refers to only to shine the state of the heat of heater; " only the utilizing wind " of so-called " mode 3 " refers to the state of only being dried by fan.

Learn from table 7, in the occasion of the heat that heater only is provided, or in the occasion of only blowing short wind; Certainly, in occasion (occasion of pattern 1) from beginning only to blow out hot blast at first, residual more water; Then; Even carried out 16 hours air dry, still residual moisture is so be not suitable for as drying unit.

Then, follow coating process and drying means after above-mentioned that kind obtains verifying, specify the application of the standard of having used aqueous coating, dry order.

At first, before explanation application, dry order, the assembling structure that is coated with for the car body of automobile carries out simple declaration with Figure 24.

In Figure 24; When the car body 205 of automobile because of accident damage, when producing the portion 201 of collapsing; Knock and this portion 201 of collapsing is released from inboard (right side Figure 24); The occasion of its operation of pounding out or this operational difficulty is pulled out this portion 201 of collapsing with pulling out utensil from face side can not implementing from the inboard.

Even carry out this sheet metal operation; Since can not become original form, should use two action sanders (double action sander) to wait the difference of height of eliminating bottom and old coating film, and after making feather edge (feather edge) grinding; Coating putty 202; After the drying, grind paper etc. with two action sanders, hand and grind, grind to form the shape of the surface of steel plate before the damage.

Finishing system of the present invention is the system that the material of whole use aqueous coatings carries out such as follows repairing in the repair procedures till surface 203 after above-mentioned putty is handled and the whole application 204.

A. the step of priming paint face application

Priming paint face (floating coat) is antirust for playing, connect airtight with sealing effectiveness and be coated with, and general, as the application number of times, standard operation is 2～3 times, and the application thickness generally is 60～80 microns altogether.

The main points of (1) the 1st application

For example, using bore to be 0.1～0.25Mpa, spray volume for the special spray gun of the state behind needle-valve complete shut-down state reversing 3～4.5 circles (the 1st example or have the spray gun of said function) carries out the coating thickness as 1.4mm, air pressure is 10～20 microns application.

Then, use heat, wavelength, air quantity and wind speed to be in the interior special drying machine of prescribed limit of above-mentioned that kind, after the 1st application finishes, carry out following drying operation.

That is the wind speed that, can obtain to leave heater 60～70cm position as the employed fan of drying device is that 0.8～2.0m/min, air quantity are that every 1m * 0.7m area is 35～50 liters/minute air-supply.

As heater (heating tube); Be for example in copper pipe, to enclose nichrome wire and form, use to have to make at the appointed time and leaves the heater that filming of 60cm～70cm rises to 100 ℃～130 ℃ ability at the nickel of the surface coated 80 μ m～120 μ m of this copper pipe.And the surface temperature of heating tube is the preferably uniform exothermic temperature distribution shown in the table 2 for example.

And, particularly, at first, arriving at coated surface under 70 ℃～80 ℃ the state in 30 seconds～45 seconds of heating tube irradiation coated surface only, energising drove for 45 seconds～90 seconds to fan at once.Like this, the coated surface temperature was once dropping to 50 ℃～60 ℃, and temperature rises 10 ℃～20 ℃ then, and is held in roughly uniform temperature.

Carry out change setting with the relation of application thickness and outside atmosphere temperature and humidity drying time.

The radiate heat of heater is operated by the distance of heater to coated surface; For example the rated capacity at heater is the occasion of 1.1KW; Being set at 10cm～20cm, is the occasion of 5.6KW in the rated capacity of heater, is set at 45cm～70cm; But adjust as stated, according to application thickness, outside atmosphere temperature and humidity etc.

(2) the 2nd times application main points

After the 1st application finishes, after the time, get into the 2nd time painting operation in the flash distillation (flush off) of passing through regulation.In the 2nd time painting operation, spray gun also carries out with the 1st application identically, but the application thickness is 20～30 μ m, and coated film thickness rate the 1st time is thick, therefore, notes damp during application, notices that color is hidden.

At drying steps, only heating tube energising was driven for 45 seconds～60 seconds at first, then under the state that heating tube is also switched on by 60 seconds～120 seconds of fan air-supply.

Like this, film coated surface drops to 60 ℃～70 ℃ during this period, and roughly keeps this state.

(3) the 3rd application main points

After removing superthermal (extra heat), get into the 3rd application by the 2nd time flash distillation.

The application main points of spray gun are same as described above, but the application thickness makes 20～30 microns.

In this operation, because priming paint face application end, so become the operation of double as flash distillation and curing.

In drying process,, utilize fan that the wind of predetermined airflow and wind speed is radiated at application face last 5 minute～8 minutes with the heat of said heating tube then from 45 seconds～60 seconds of the heat of heating tube irradiation.

Must adjust slightly above-mentioned drying time by the rated capacity of heater, and large-scale heater (5.6KW) is 5～6 minutes, and small-sized heater (1.1KW) is about 8 minutes.

Here, water-fast pouncing paper 800～1000 is used in the grinding of priming paint face, especially when the deep or light gradual change of priming paint face, must carry out water in earnest and grind.

B. be coated with the step of (at the bottom of the look) application eventually

Look primary coat dress is to use aqueous coating to repeat coating until hiding.

According to the classification (for example, metal particle application, three coated microgranules applications, solid enamel etc.) of coating, application, must change application number of times and coating process.Flash distillation between application is carried out with reference to following main points.

(1) the 1st time application main points

Utilize above-mentioned special spray gun, for example suppose from coating area 10cm ²To the occasion that 1 fan door size is carried out application, be set at nozzle diameter 1.4mm, air pressure 0.1Mpa～0.25Mpa, discharge rate reversing 3～4.5 circles (the reversing amount that begins from full cut-off) and carry out application.

In drying steps, only the heat of heater is radiated at coated surface last 30 second～45 seconds, then, the wind of predetermined airflow and wind speed is radiated at coated surface last 45 second～60 seconds with the heat of said heater.The adjustment of heat is according to rated capacity and temperature, humidity and fixed by the distance of heater and coated surface.For example, be the occasion of 1.1KW in the rated capacity of heater, said distance is set at 10cm～20cm, and rated capacity is the occasion of 5.6KW, is set at 45cm～70cm.

Wind speed preferably is made as 1.5～2.0 meter per seconds.As air quantity, be 1m * 0.7m for the area of filming, 35～50 liters/minute is suitable, preferably 40～44 liters/minute, according to the size of coating area, changes to proportional air quantity.

For heating tube, as stated, use to have the heating tube of branch light emission illumination in 2 μ m～scope of 10 μ m.

(2) the 2nd times application main points

The 2nd time application main points are, remove by the 1st time flash distillation superthermal after, notice that damp and color are hidden.

The application thickness makes 3～5 microns.The main points of spray gun are identical with the 1st time.The flash distillation operation is also carried out with the 1st time equally, but because thick than the 1st time of filming, so the drying process golden hour is longer slightly.

The state that the gorgeous look of epithelium is eliminated is as the standard that gets into subsequent processing.

Drying operation, only the standard of the irradiation time of heater is 45～60 seconds, the standard of the irradiation time of simultaneously its blowing being carried out is 60～90 seconds.

The application main points of (3) the 3rd times～the 4th

The application thickness all makes 3～5 microns.The main points of spray gun are identical with the 1st time.Drying operation all is that only to utilize the irradiation time standard of heater be 45～60 seconds, is 60～90 minutes to its standard that applies the irradiation time that wind carries out simultaneously.

The main points of (4) solidifying

After the industry end was pretended in the look primary coat, during before the final operation of varnishing eventually, the look primary coat of working continuously was pretended to work continuously with the state that does not solidify continuously after the industry end.That is, after the industry end was pretended in the look primary coat, wind (air quantity and wind speed), the branch light emission illumination that contains provision wavelengths and the heat with regulation was radiated on the coated surface continuously, and the evaporation of carrying out to a certain degree through the solvent that makes moisture and ethanol system finishes to solidify.

That is to say that at first only the heat with heating tube is radiated at 45～60 seconds on the coated surface, then, the wind of predetermined airflow and wind speed is carried out 3～5 minutes curing operation with the heat of said heating tube.

C. varnish coated step

The 1st time application

Use the varnish of aqueous coating class, carry out application with the promptly whole coating process that shows gorgeous look degree of half coating.

With the application that spray gun carries out, for example suppose from coating area 10cm ²To the occasion that 1 fan door degree of automobile is carried out application, be set at nozzle diameter 1.4mm, air pressure 0.1Mpa～0.25Mpa, discharge rate and begin to reverse 4～5 circles from the nozzle full cut-off, the application of application thickness becomes 10～20 microns.

Dry main points are with above-mentioned identical, but the application thickness is thicker, and correspondingly drying is wanted spended time.

For example, only the heat with heating tube is radiated at 60～90 seconds on the coated surface, then, the wind of predetermined airflow and wind speed is shone for 90～180 seconds with the heat of heating tube.

(2) the 2nd times～the 3rd time application main points

The flash distillation that utilizes the 1st time remove superthermal after, to carry out application with the 1st identical main points.Become final processing because the 2nd time (or the 3rd time) is varnish coated, so carry out drying operation while note not producing rubbish and pit etc. after application finishes.

As the main points of drying, same as described above, but will take longer to drying time, for example, only the heat of heating tube is radiated on the application face 2～3 minutes, then the wind of predetermined airflow and the wind speed heat with heating tube was shone 15～18 minutes.

More than, represented to use the aqueous coating of each coating producer to carry out the main points (guide) of the standard of application and drying operation occasion.Through constructing the guide of this standard, even the user who is lacking in experience also can will be coated with ETL estimated time of loading and shorten high-qualityly.

In addition, the toning operation of having used the occasion of aqueous coating also is complicated, if do not accumulate more experience, the problem that can not show required color is arranged then.Here, omitted statement to this problem.

The invention is not restricted to above-mentioned and illustrated example, in the scope that does not break away from its aim, can do various distortion and implement.

For example, spray gun is not limited to the spray gun of the 1st example, as long as can satisfy function of the presently claimed invention, spray gun at present commercially available or that sell from now on all can use.

In addition, though the present invention is made up of application step and drying steps, for example separately, also set up as invention separately two steps.

Practicality on the industry

Finishing system of the present invention to compare application and dry extremely difficult aqueous coating with organic solvent type coating, can provide optimal conditions when application and drying.For example, be not limited to example illustrated application step and drying steps on car surface, can be used for application and dried in all equipment and even the member mending course.

Claims

1. a coating process is a coating process of repairing usefulness with aqueous coating, it is characterized in that having following steps,

The application step in this step, is mixed and compressed air and full-bodied aqueous coating with after the paint atomizing, is coated on by on the application face with the air pressure stipulated and the spray volume of regulation with spray gun;

Drying steps; In this step; After said application step setting time and flash-off time through regulation, will have reflector, be provided in the heater in said reflector the place ahead, the drying device that is provided in the blowing unit at said heater rear will leave the predetermined distance configuration with the coated surface that is coated with said aqueous coating, with the said heater that sends the heat that contains the provision wavelengths territory to the said coated surface heating stipulated time; Then; Continue at said heater under the state of heating, utilize said blowing unit at the appointed time with the wind of regulation air quantity to said coated surface to carry out drying

Then, application step and drying steps are carried out more than 2 times more repeatedly according to aforesaid way,

Said spray gun has:

The coating injection nozzle, this coating injection nozzle is located on the said painting device body, has the jet that makes paint spray;

Said air pressure regulon comprise can with the sectional area of said compressed air supply passageway from zero vary continuously to ormal weight valve portion, the air restrictions that the sectional area that makes said compressed air supply passageway reduces ormal weight and decompression,

And constitute and to make said coating regulon and said air pressure regulon interlock action,

Said spray gun is following spray gun: said coating regulon and said air pressure regulon are set; Trigger portion is being moved to midway and said air pressure regulon and said coating regulon when being in half-open position; Make the pressure coupling of the spray volume and the said compressed air supply passageway of said coating, thereby can be the particle even spraying of 20～45 seconds high viscosity water system coating with Ford cup number second.

2. a coating process is a coating process of repairing usefulness with aqueous coating, it is characterized in that,

Carry out primary application, after this primary application finishes, application again carried out more than 2 times repeatedly,

Said primary application has following steps:

Drying steps; In this step; After the setting time and flash-off time of said application step through regulation; To have reflector, be provided in the heater in said reflector the place ahead, the drying device that is provided in the blowing unit at said heater rear leaves the predetermined distance configuration with the coated surface that is coated with said aqueous coating, with the said heater that sends the heat that contains the provision wavelengths territory to the said coated surface heating stipulated time, then; Continue at said heater to utilize said blowing unit at the appointed time the wind of regulation air quantity to be carried out drying to said coated surface under the state of heating;

Said application again has following steps:

Application step again in this step, through behind the flash-off time, is suitably adjusted air pressure and spray volume according to the spray volume of the air pressure of said regulation and regulation and then on said coated surface, to be coated with;

Drying steps again; In this step; After the setting time and flash-off time of said application step again through regulation; With the said coated surface heating stipulated time,, heater utilize said blowing unit that the wind of regulation air quantity is carried out drying to said coated surface under continuing the state of heating then after according to said predetermined distance and the heat that contains the provision wavelengths territory said distance, wavelength domain and heat suitably being adjusted

Said spray gun has:

3. according to claim 1 or claim 2 coating process is characterized in that, said application step and said drying steps are applicable to the application of priming paint face, application eventually, application and drying in varnish coated.

4. according to claim 1 or claim 2 coating process; It is characterized in that; Said spray gun is set to: its needle-valve and coating injection nozzle at least the shift motion that causes by said trigger portion roughly before half mobile phase, the emitted dose of coating changes continuously, and at remaining mobile phase; Roughly the same or the minor variations of the emitted dose of coating, said spray gun are suitable for the deep or light gradual change painting operation of the big coating of viscosity.

5. according to claim 1 or claim 2 coating process; It is characterized in that; Said drying device makes the place ahead that is provided in reflector and the heating tube that can send far infrared heating; And this reflector is made up of the front reflector of basket and a pair of side reflector that is positioned at these reflector two ends, front, and heat that said drying device is sent out said heat-generating pipe and emission spectrum wavelength illumination are on filming

Beginning to generate heat from said heating tube,, this temperature of filming is descended 10 ℃～20 ℃ than the said set point of temperature that reaches because of said heating of filming, and the temperature after will descending keep fixing by the blowing unit air-supply to through after the stipulated time.

6. according to claim 1 or claim 2 coating process; It is characterized in that; The heater of said drying device is set at: the temperature of coated surface is heated to 60 ℃～70 ℃ under the state of being blown by said blowing unit; In said drying steps, said heater and said blowing unit only make the heater action in the second of regulation during the number, said heater and said blowing unit are moved simultaneously.

7. according to claim 1 or claim 2 coating process is characterized in that, is that the area of every 1m * 0.7m is 35～50 liters/minute to the air output of the blowing unit of said coated surface.

8. according to claim 1 or claim 2 coating process; It is characterized in that; The heater that is used for the drying device of said drying steps is the heater that can send the emission spectrum of the wavelength domain that is prone to absorb as the solvent of the ethanol system of the solvent of said aqueous coating or the nonionic water capacity; And be set at: when only having said heater to move, send the emission spectrum in the medium wavelength territory that comprises 2.5 μ m～4.0 μ m

When said heater and said blowing unit move simultaneously, send the emission spectrum in the long wavelength territory that comprises 5.5 μ m～11 μ m.

9. according to claim 1 or claim 2 coating process is characterized in that, is used for the heater of the drying device of said drying steps, is to accommodate nichrome wire and form at the surface coated nickel of said copper pipe at the central part of copper pipe.