CN102639249A - Electrostatic coating machine employing removable paint cartridge - Google Patents

Electrostatic coating machine employing removable paint cartridge Download PDF

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Publication number
CN102639249A
CN102639249A CN2010800429820A CN201080042982A CN102639249A CN 102639249 A CN102639249 A CN 102639249A CN 2010800429820 A CN2010800429820 A CN 2010800429820A CN 201080042982 A CN201080042982 A CN 201080042982A CN 102639249 A CN102639249 A CN 102639249A
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CN
China
Prior art keywords
coating
barrel
coated
main body
bag
Prior art date
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Granted
Application number
CN2010800429820A
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Chinese (zh)
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CN102639249B (en
Inventor
谷隆次
猪野濑贞夫
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NIPPON IUJI CO Ltd
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NIPPON IUJI CO Ltd
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Publication of CN102639249A publication Critical patent/CN102639249A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/16—Arrangements for supplying liquids or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B05B12/1463—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet separate containers for different materials to be sprayed being moved from a first location, e.g. a filling station, where they are fluidically disconnected from the spraying apparatus, to a second location, generally close to the spraying apparatus, where they are fluidically connected to the latter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter

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  • Electrostatic Spraying Apparatus (AREA)
  • Spray Control Apparatus (AREA)

Abstract

Provided is an electrostatic coating machine employing a removable paint cartridge, which enable one to clean the paint flow path including coupling parts between the main body of the coating machine and a paint cartridge, with the said coupling parts including the paint outlet of the paint cartridge. The paint cartridge (10) has a stepped sleeve (300) projecting downward from the bottom face thereof and being displaceable up and down. The stepped sleeve (300) has a valve seat (302) for a first check valve (30) formed at the lower end thereof. A movable valve body (304) to fit to the valve seat (302) is energized by an inner peripheral spring (306) in the direction for fitting to the valve seat (302). A hollow (40) of the main body (6) of the coating machine has a secondary hollow (402) for fitting of a smaller-diameter part (300a) of the stepped sleeve (300). At the center of the bottom face of the secondary hollow (402), is opened a paint feeding channel (44).

Description

Comprise the electrostatic atomizer that is coated with barrel that to install and remove
Technical field
The present invention relates in general to a kind of electrostatic atomizer, and is more detailed, relates to a kind of electrostatic atomizer that is coated with barrel that can install and remove that comprises.
Background technology
As the electrostatic atomizer that is suitable for conductive coating paints such as water paint, metallic paint, known a kind of electrostatic atomizer that is coated with cartridge type.Coating drum electrostatic coating machine has the barrel that is coated with that can be installed on the coating machine main body with installing and removing, uses to be contained in the application that this conductive coating paint that is coated with barrel carries out body of a motor car etc.Coating drum electrostatic coating machine has and can cut off high voltage and leak such advantage via conductive coating paint towards outside.
The conventional electrostatic coating machine of supplying with coating from outside coating source is divided into rotary-atomizing formula coating machine and the injecting type coating machine that comprises rotary atomization head (so-called " bell-jar ") substantially, is natural but be coated with the coating machine that barrel is applicable to this dual mode.
Also be called as coating material cartridge or container for paint unit though be coated with barrel; But when distinguishing substantially; First can be categorized as the piston type (patent documentation 1～3) that extrudes coating with piston, and second can be categorized as the coating packet mode (patent documentation 4～7) of exerting pressure and extruding coating in the coating Bao Ercong coating bag to flatten towards the coating bag.
Particularly; The piston type of patent documentation 1～3 is coated with barrel to have the coating reception room that is marked by piston and clips the work liquid chamber that piston is in an opposite side with the coating reception room; Press down piston through supplying with working solution (being typically non-conductive liquids such as diluent) towards the work liquid chamber; Thereby the coating of coating reception room is extruded from be coated with barrel, and this coating is supplied to bell-jar via carrier pipe.Because the barrel that is coated with of patent documentation 1～3 has the carrier pipe that can insert the coating machine main body, therefore, also can be called the barrel that is coated with of band carrier pipe.
As stated, patent documentation 4 discloses the barrel that is coated with that comprises the coating bag that forms the coating reception room, and the barrel that is coated with of this patent documentation 4 comprises the carrier pipe that can insert the coating machine main body.Therefore, the disclosed barrel that is coated with also can be called the barrel that is coated with of being with carrier pipe in this patent documentation 4.Patent documentation 4 discloses two kinds of methods as the method for flattening the coating bag.One of them method is around the coating bag, to supply with working solution and use this working solution directly to exert pressure to flatten the method for coating bag towards the coating bag.Another method is following method: prepare working solution bag adjacent with the coating bag and formation work liquid chamber, supply with working solution so that the expansion of working solution bag uses the working solution bag of this expansion to exert pressure towards the coating bag towards this working solution bag, thereby flatten the coating bag.
Patent documentation 5 is comprising that being coated with of coating bag and working solution bag proposed following scheme in the barrel: the contact-making surface between coating bag and the working solution bag is connected to each other, to prevent the relative displacement between coating bag and the working solution bag.In addition, this patent documentation 5 has also proposed following scheme: use the 3rd liquid to be full of the gap between coating bag and the working solution bag.
Patent documentation 6 has proposed a kind of through being that nylon resin is produced and comprised that thereby the outside housing that is coated with barrel of coating bag can observe the barrel that is coated with of inner case with transparent rigid plastics.In addition, this patent documentation 6 discloses the coating bag and also has been made up of transparent resin.
Patent documentation 7 discloses does not have the packet mode of carrier pipe to be coated with barrel.This packet mode is coated with barrel and has the sleeve that constitutes the coating outlet port that is coated with barrel, and the check valve that is made up of ball valve (movable valve) is installed in this sleeve.The coating machine main body that supplies this coating wound packages to establish has opens the slide (shutter) of closing with the upstream extremity of the coating path in this coating machine main body.In addition; The coating machine main body has the detergent remover supply passageway that receives the supply of detergent remover from the outside; When slide was in closing state, above-mentioned detergent remover supply passageway was communicated with the above-mentioned coating path through the connecting path (being called " slide path ") that is formed by this slide.
Clamped open and close valve midway at the detergent remover supply passageway.This open and close valve and above-mentioned slide mechanically link.When slide is opened, close open and close valve, when slide cuts out, open open and close valve.When packet mode coating wound packages was located at the coating machine main body, slide was opened, and the coating port of export of tube is communicated with the interior coating path of coating machine main body.By this, can coating be supplied to the coating machine main body from tube (coating bag).Become empty when being coated with barrel, will be coated with barrel when the coating machine main body unloads, slide cuts out, and in addition, opens the detergent remover open and close valve linkedly with the closing motion of this slide.As stated, form the slide path, the detergent remover supply passageway is communicated with the coating path through this slide path by the slide of closed condition.Being coated with under the state that barrel unloads, when detergent remover is supplied to coating machine main body (detergent remover supply passageway) from the outside, can utilize this detergent remover to make coating path in the coating machine main body cleaning that becomes.
As using working solution to extrude the method for coating, the membrane pump of record in the known patent document 8.The membrane pump of this patent documentation 8 does not relate to and is coated with barrel.But the housing of membrane pump has at the coating port of one end opening with at the working solution port of its other end opening, and the inside of housing is divided into coating reception room and work liquid chamber by retractable film.Through working solution is supplied to the work liquid chamber via the working solution port, thereby the coating that is filled in the coating reception room is flowed out via the coating port, the coating after the outflow is supplied to electrostatic atomizer.Therefore, the principle of the membrane pump of patent documentation 8 can be applicable to and be coated with barrel.
Can install and remove in the coating machine main body to be coated with the coating content that barrel can accommodate be limited.Therefore, when the application of a for example body of a motor car finishes, to be coated with the replacing of barrel for the next body of a motor car of application.
Patent documentation 9 discloses the relevant technology of barrel replacing that the is coated with a kind of and paint robot that comprises electrostatic atomizer.Particularly, when the application of a body of a motor car finishes, in being coated with barrel replacing station, the barrel that is coated with that uses is unloaded from the coating machine main body, then, the new barrel that is coated with is installed on the coating machine main body.That is, be coated with the replacing of barrel.Then, when paint robot carries out the application of body of a motor car, change in the station being coated with barrel, carry out, and the barrel that is coated with that stores behind the filling paint utilizes being used for again towards the operation that is coated with filling paint in the barrel that uses.
About coating being filled in empty being coated with in the barrel, in fact to carry out color replacement in the form of piston being coated with in the barrel to utilize again.That is, though in the form of pistonly be coated with the coating that barrel is also filled same color sometimes, as specifying in the patent documentation 1,2, the inside (coating reception room) that also will be coated with barrel is sometimes cleaned to fill the coating of other color.Promptly carry out so-called color replacement.Patent documentation 1 disclosed being coated with in the barrel, it is clean that this is coated with barrel is at first piston to be pressed to than the position before slightly, the deep of coating reception room, discharges being contained in the coating that is coated with barrel.Why piston not being pressed to deep and making piston stop at its position before slightly is because following cause: when the deep that piston is pressed to the coating reception room is the diapire of coating reception room; Even if detergent remover is got in the coating reception room, can not make the internal flow of detergent remover at this coating reception room.(paragraph 0153 of the specification of patent documentation 1)
Under this state, promptly piston is being positioned under the state than the position of deep before slightly; Detergent remover is via supplying with port and be supplied to the coating reception room at the detergent remover of the diapire opening of coating reception room; This detergent remover is discharged to the outside via carrier pipe after the coating reception room promptly is located in the internal flow than the coating reception room of the piston restriction of the position of deep before slightly.
Patent documentation 2 is coated with the clean problem points that is coated with barrel of having pointed out above-mentioned patent documentation 1 of barrel about piston type.As stated; Patent documentation 1 has proposed following scheme: piston is positioned than forward position, deep; To be cleaned by the inside of the coating reception room of this piston restriction, but as its problem, patent documentation 2 is pointed out: in the method for this patent documentation 1; Be supplied to the mobile turbulent flow that becomes of the detergent remover of coating reception room via the detergent remover supply port of coating tube bottom, thereby can not clean the inside of coating reception room equably.According to patent documentation 2, pointed out following problem especially: be difficult to the coating in the gap between the sidewall of side that gets into piston and coating reception room is washed off, and need spended time for washing this coating off.In addition, for solving the problem of patent documentation 1, patent documentation 2 has proposed following scheme: the diapire at the coating reception room forms towards the radially extended groove of the central part of this diapire.
The prior art document
Patent documentation
Patent documentation 1: Japanese Patent Laid is opened the 2002-11396 communique
Patent documentation 2: Japanese Patent Laid is opened the 2004-42036 communique
Patent documentation 3: japanese patent laid-open 08-229446 communique
Patent documentation 4: Japanese Patent Laid is opened the 2005-87810 communique
Patent documentation 5: Japanese Patent Laid is opened the 2005-296750 communique
Patent documentation 6: Japanese Patent Laid is opened the 2006-347606 communique
Patent documentation 7: Japanese Patent Laid is opened the 2006-334549 communique
Patent documentation 8: real the opening of Japan Patent put down the 04-87759 communique
Patent documentation 9: Japanese Patent Laid is opened the 2000-317354 communique
Summary of the invention
Invent technical problem to be solved
Coating drum electrostatic coating machine is applied to the application of body of a motor car.In addition, be well-known for the application flexible Application of carrying out body of a motor car with the paint robot that electrostatic atomizer is installed on arm.When carrying out the color replacement of electrostatic atomizer, as patent documentation 7 is disclosed, carry out cleaning of coating machine main body.
About being coated with the color replacement of barrel, the barrel that is coated with in the form of piston carries out inner cleaning to fill the coating of other color in fact as stated.Yet, being coated with in the barrel of packet mode, utilized again only for the coating that schedules same color, when the coating that is coated with barrel that unloads from the coating machine main body was the coating of A look, the coating of this A look was filled in and is coated with in the barrel.
About cleaning of electrostatic atomizer main body is (patent documentation 7) that has carried out under the state that is coated with barrel having unloaded from the coating machine main body as stated.The coating machine main body to clean the problem that exists be the coating machine main body be coated with the clean of coupling part between the barrel.In patent documentation 7, proposed following scheme: the upper end in the coating machine main body is provided with slide, promptly forms the clean path of additivity with the coupling part that is coated with barrel in the upper surface of coating machine main body through closing this slide.
Yet the motion of patent documentation 7 need make slide and the mechanical mechanism that is coated with the mounting or dismounting interlock of barrel, in addition, also need guarantee slide sealing on every side etc., causes the structure of coating machine main body to become complicated.This is the main cause that causes the manufacturing cost rising of coating machine main body.
The object of the present invention is to provide a kind of simple in structure and can comprise the coating machine main body and be coated with the electrostatic atomizer that band that coating outlet that coupling part between the barrel promptly is coated with barrel cleans the coating path of coating machine main body interiorly is coated with barrel.
The technical scheme that the technical solution problem is adopted
According to the present invention; Through providing a kind of electrostatic atomizer to solve above-mentioned technical problem, this electrostatic atomizer comprises can be with respect to the barrel that is coated with of coating machine main body mounting or dismounting, and above-mentioned coating machine main body receives from the above-mentioned coating tube and supplies with next coating so that workpiece is carried out application; It is characterized in that; The above-mentioned coating tube comprises: (i) sleeve, and this sleeve constitutes the outlet of the above-mentioned coating of above-mentioned coating tube, and can displacement on above-below direction; (ii) first spring, this first spring towards the below to the above-mentioned sleeve application of force; And (iii) coating open and close valve, this coating open and close valve is located at above-mentioned sleeve and the outlet of above-mentioned coating path is opened and closes, and above-mentioned coating machine main body comprises: (i) recess, this recess is accommodated above-mentioned sleeve; (ii) coating path, this coating path has the opening of offering in the bottom surface of above-mentioned recess, and receives the coating from the above-mentioned coating tube via this opening; (iii) detergent remover supply passageway, this detergent remover supply passageway receives the detergent remover from the outside, and this detergent remover is guided to the upper end of above-mentioned coating path; And (iv) sealing ring; The sealing ring is disposed at the bottom surface of above-mentioned recess; And be located at the outer peripheral portion of the open upper end of above-mentioned coating path; When the above-mentioned coating tube was installed on above-mentioned coating machine main body, the spring force that utilizes above-mentioned first spring was pressed into the lower surface of above-mentioned sleeve on the above-mentioned sealing ring.
According to drum electrostatic coating machine of the present invention, when changing color, will be coated with under the state that barrel is installed on the coating machine main body, carry out the cleaning of coating path in the coating machine main body.That is, in electrostatic atomizer of the present invention, the coating that is coated with barrel is supplied to the coating machine main body through the coating outlet that is made up of above-mentioned sleeve.Be coated with connecting portion between the open upper end of coating path of outlet and coating machine main body of barrel by above-mentioned seal ring seal.Therefore, can prevent to be coated with the connecting portion between barrel and the coating machine main body from the coating pollution that is coated with the barrel outflow.In addition; When changing color; After being in the state of closing the coating open and close valve that is coated with barrel; Through detergent remover is directed in the coating machine main body from the outside, can use the detergent remover that gets in the coating machine main body, comprise near the coating path that makes interiorly the outlet that is coated with barrel by the sealing ring restriction in the coating machine main body cleaning that becomes.
In the preferred embodiment of the present invention, the above-mentioned coating open and close valve that is coated with barrel is made up of second spring of the above-mentioned movable spool application of force the fixed valve base that is formed at above-mentioned sleeve lower end, the movable spool that falls to being positioned at the said fixing valve seat, the above-mentioned fixed valve base of court.State movable spool through utilizing the push rod that advances from the coating machine main body side to push to, thus can this coating open and close valve of positive opening.On the contrary, retreat, can close the above-mentioned coating open and close valve through making push rod.As variation, also can be built in and be coated with barrel making the above-mentioned coating open and close valve that is coated with barrel open the brake of closing.
The barrel that is coated with of the present invention is not included in the existing carrier pipe that adopts in the barrel that is coated with.Therefore, the priming valve that is made up of open and close valve is set easily in the coating path of coating machine main body.It is that time started point and concluding time point with application synchronously carried out that the opening of this priming valve closed.Therefore, can make electrostatic atomizer coating spraying begin and the time point that begins and finish of end and coating process synchronous.
Electrostatic spraying function of the present invention adopts the barrel that is coated with of any kind.Particularly, being coated with barrel both can be to utilize piston to extrude the piston type tube of coating, also can be through flattening the packet mode tube that the coating bag extrudes coating.In addition, the coating reception room that is coated with barrel also can adopt by what retractable film formed the coating reception room and be coated with barrel (membrane pump formula tube).
Other purposes of the present invention and action effect come clear and definite by the explanation of following preferred implementation of the present invention.
Description of drawings
Fig. 1 is the sketch map that the packet mode that comprises embodiment that is installed on paint robot is coated with the electrostatic atomizer of barrel, is the figure of the coating process of expression electrostatic atomizer.
Fig. 2 is the front view that is contained in the coating bag that is coated with barrel of Fig. 1.
Fig. 3 is the sectional elevation along the bag main body of the III-III line of Fig. 2.
Fig. 4 is the sectional elevation along the upper end oral area of the IV-IV line of Fig. 2.
Fig. 5 is a details drawing of being located at and being coated with the check valve of the coating path lower end that the lower end oral area of the coating bag of barrel communicates, shows and on the coating machine main body, is fixed with the state that is coated with barrel.
Fig. 6 is the figure corresponding to Fig. 5, is that expression utilizes the actuator positive opening of band push rod of coating machine main body side to be located at the figure of state of the check valve of the coating path lower end that is coated with barrel.
Fig. 7 is the details drawing of actuator of band push rod of the check valve positive opening of the working solution supply passageway lower end that is used for the confined space of being located at and being coated with barrel is communicated.
Fig. 8 is the major part enlarged drawing that the major part of Fig. 7 is extracted out, is the figure that is used to explain the check valve of the working solution supply passageway that can utilize the push rod positive opening to be coated with barrel.
Fig. 9 is the figure that is used to explain after using up the coating that is coated with barrel, the operation of under this state that is coated with barrel the coating supply passageway of coating machine main body being cleaned is being installed.
Figure 10 be used to explain after the clean end of coating machine main body, the barrel that is coated with of the sky after will unloading from the coating machine main body is fixed in assigned position that the coating bag cleans the station to clean the figure of the inner operation of coating bag.
Figure 11 be used for explaining will be coated with barrel clean after, coating is filled in the figure of the operation of coating bag.
Figure 12 is the figure that is used to explain the variation of the method for cleaning that is coated with barrel, in addition, still is used to explain the figure of the variation of coating bag.
Figure 13 is the figure of the method for cleaning that is coated with barrel that comprises the working solution bag that is used to explain that the present invention can be suitable for.
Figure 14 is the figure of another method of cleaning that is coated with barrel that comprises the working solution bag that is used to explain that the present invention can be suitable for.
Figure 15 is used to explain also can the present invention be applicable to that clean piston type is coated with the figure of barrel.
The specific embodiment
Embodiment
Below, according to accompanying drawing the preferred embodiments of the present invention are described.Fig. 1 is used for the figure that the summary to the electrostatic atomizer that is installed on paint robot describes.In Fig. 1, the arm of reference marks 1 expression paint robot is equipped with electrostatic atomizer 2 at robots arm 1 front end.Show to electrostatic atomizer 2 exemplary as coating atomizing element and comprise bell-jar (Japanese: 4 rotary-atomizing formula coating machine ベ Le カ Star プ), but also can the present invention preferably be applicable to the injecting type coating machine.
Electrostatic atomizer 2 is the coating machines that are coated with barrel (cartridge) formula.Particularly, electrostatic atomizer 2 has: the coating machine main body 6 that is fixed in robots arm's 1 front end; And the upper surface that is installed in coating machine main body 6 promptly with the surface of bell-jar 4 opposite sides be coated with barrel 10.This is coated with barrel 10 can be with respect to 6 mounting or dismounting of coating machine main body.
Be coated with the coating bag 12 that barrel 10 has the coating reception room that is configured for filling paint.Flatten coating bag 12 through this coating bag 12 being exerted pressure,, thereby can the coating of coating bag 12 be supplied to coating machine main body 6 with the volume of the coating reception room that forcibly reduces to form by this coating bag 12 from the outside.
Be coated with barrel 10 and have the confined space 14 that coating bag 12 is accommodated, this confined space 14 is formed by overcoat 16.Comparatively it is desirable to, overcoat 16 is processed by transparent or semitransparent hard material, is typically processed by transparent or semitransparent plastic material.
This is coated with barrel 10 is the tubes that utilize the mode that working solution directly exerts pressure to coating bag 12.Thus, coating bag 12 around be full of working solution.Working solution preferably adopts the liquid of insulating properties, typically uses the insulating properties diluent as working solution.Because entrained air is unfavorable in the working solution in the confined space 14 of the work of formation liquid chamber, therefore,, comprise that at the top of confined space 14 14a of airtrapping portion of convex form is comparatively desirable in order to catch the air in the confined space 14.
Fig. 2 is the front view of coating bag 12.Coating bag 12 is soft plastics drip moldings of the tubular that opens wide up and down.When describing particularly with reference to Fig. 2, coating bag 12 has: at the bag main body 12a of the upwardly extending tubular of upper and lower; The upper end oral area 12b that extends towards the top from the upper end of this bag main body 12a; And the lower end oral area 12c that extends towards the below from the lower end of bag main body 12a.That is, oral area 12b through upper end and lower end of coating bag 12,12c and open wide up and down.In this coating bag 12, upper end oral area 12b and lower end oral area 12c are fixed in and are coated with barrel 10, and bag main body 12a is supplied to the working solution of confined space 14 along laterally flattening.The bag main body 12a of coating bag 12 be shaped to and upper end oral area 12b and lower end oral area 12c between the shape of angle part smooth curved.
Yet the coating bag of implementing now is to process through the sheet material thermal welding that makes two softnesses that approach, and can think that the inner surface of coating bag adheres to coating easily, in addition, also has no consideration to doing one's utmost to reduce the coating content that remains in the coating bag.Can think thus, be coated with barrel, only stay in the coating of filling same color and come to utilize again such consideration, the inside of coating bag not cleaned fully and utilized such idea again for existing packet mode,
The drip molding that is made up of pliability synthetic resin material that the coating bag 12 of embodiment is to use that finishing die produces, the inner surface of coating bag 12 is made up of seamless and level and smooth face.In the coating bag 12 of this embodiment, adopt low molecular polyethylene as its material, this is because in order to produce thin-walled and soft bag through blow molding, preferable material is a low molecular polyethylene.Low molecular polyethylene is to have the inside of coating bag 12 is cleaned to utilize the resin material of the required durability of coating bag several times 12 again.
Certainly, the material of coating bag 12 and manufacturing process are not limited to above-mentioned low molecular polyethylene, blow molding.The amount of discarded coating is reduced to the limit when the inside of coating bag 12 is cleaned and will be cleaned; Comparatively it is desirable to, have as the characteristic of coating bag 12 that (1) is wrapped the inner surface of the flexibility of the appropriateness of main body 12a, (2) water proofing property at least, (3) are seamless and smooth interior surface.Therefore, as long as satisfy above-mentioned condition, just can at random select manufacturing process, the resin material of coating bag 12.In addition, also can be through the inner surface of coating bag 12 being handled the inner surface imparting water repellency to coating bag 12, seamless and flatness.For example, the FEP of nylon resin, fluorine type resin is chemical resistance, the excellent resin material of self lubricity, also can use these resins to process coating bag 12.In addition, for example, also can use the inner surface of FEP material painting of coating bag 12.Can example enumerate out painting method, coating method, resin evaporation coating method method as the inner surface treatment of coating bag 12.In addition, through coating bag 12 being impregnated in the liquid of suitable resin material, also can on the inner surface of coating bag 12, form coat.
As stated, the coating bag 12 of Fig. 2 becomes through flattening the design that bag main body 12a comes the oral area 12c extrusion coating from the lower end in the horizontal.If need improve the crush characteristics of this bag main body 12a, then shown in the double dot dash line of Fig. 2, Fig. 4, the rib 12d of also can be on bag main body 12a integrally formed single or a plurality of lengthwises along its long side direction extension.
In the coating bag 12 that constitutes the coating reception room, comparatively it is desirable to, it is transparent or semitransparent wrapping main body 12a at least.If bag main body 12a is transparent or semitransparent, then existing can be from the outside through the painting color the Visual Confirmation bag main body 12a, the such advantage of loading of coating.In addition, find 12 damages of coating bag easily and make coating spill such situation.The prerequisite of this advantage is that the overcoat 16 of formation work liquid chamber (confined space 14) is transparent or semitransparent.
Fig. 3 shows the shape of cross section of main body 12a, and Fig. 4 shows the shape of cross section of upper end oral area 12b.Upper end oral area 12b is the cross section circle, though not shown lower end oral area 12c has the circular shape in cross section also identically.Above-mentioned upper end oral area 12b and lower end oral area 12c are fixed in and are coated with barrel 10.
Be back to Fig. 1, be coated with barrel 10 and have first～the 4th these four internal paths 20,22,24,26.First internal path 20 is the coating paths that are communicated with the lower end oral area 12c of coating bag 12.Second internal path 22 is the working solution supply passageways that are communicated with the lower end of the confined space 14 that constitutes the work liquid chamber.The 3rd internal path 24 is the detergent remover supply passageways that are communicated with the upper end oral area 12b of coating bag 12.The 4th internal path 26 is the working solution drain passageways that are communicated with the upper end (14a of airtrapping portion) of confined space 14.
First～the 4th internal path 20～26 is being coated with the lower surface opening of barrel 10.The contact-making surface that the lower surface that is coated with barrel 10 contacts with coating machine main body 6 when being formed in this being coated with barrel 10 and being installed in coating machine main body 6.
On first～the 4th internal path 20～26, be assembled with respectively as the acting check- valves 30,32,34,36 of open and close valve.In Fig. 1, first～the 4th check-valves 30～36 is illustrated in and leaves the position that is coated with barrel 10 lower surfaces, but this is based on reason in the mapping, in fact first～the 4th check- valves 30,32,34,36 and be coated with the lower surface disposed adjacent of barrel 10.Constitute by fixed valve base with by spring energized movable spool as acting first～the 4th check-valves 30～36 of open and close valve.Because such check-valves is well-known at present, therefore, omits its detailed explanation, but first check-valves 30 of first internal path (coating path) 20 adopts specially designed check-valves.In the back, with reference to Fig. 5, Fig. 6 first check-valves 30 is elaborated.
Then, with reference to Fig. 1, coating machine main body 6 and robots arm 1 are described.In the upper surface of coating machine main body 6, promptly with on the surface of bell-jar 4 opposite sides be formed with recess 40, utilize this recess 40 to take in and be coated with barrel 10.When being coated with barrel 10 and being contained in recess 40, utilize the locking mechanism 42 that moves because of air will be coated with barrel 10 and be fixed in coating machine main body 6.
Coating machine main body 6 has from being coated with the coating supply passageway 44 that coating that barrel 10 receives is supplied to bell-jar 4, on this coating supply passageway 44, has clamped priming valve 46.This priming valve 46 is made up of the open and close valve that utilizes pilot air to open closing motion.In the drawings, reference marks 48 is air motors, utilizes this air motor 48 to drive the bell-jar rotation.
Japanese patent laid-open 11-262699 communique discloses and a kind ofly has been coated with barrel with patent documentation 1～3 identical piston type, in addition, also discloses a kind of barrel that is coated with carrier pipe.In Fig. 5 of this japanese patent laid-open 11-262699 communique, illustrate the details of front end (lower end) opening of carrier pipe being opened the valve system of closing.Though the valve system of the front end of carrier pipe (lower end) is equivalent to above-mentioned priming valve 46; But the valve system of japanese patent laid-open 11-262699 communique makes the upstream extremity insertion of the piston rod of the cylinder that is built in the coating machine main body from carrier pipe, and piston rod is extended on the total length of this carrier pipe.In addition, constitute needle-valve mechanism by the leading section (bottom) of piston rod and the leading section (bottom) of carrier pipe.The above-mentioned priming valve 46 that comprises in this needle-valve mechanism and the application's inventive embodiment is corresponding.
Relative therewith; In the application's inventive embodiment; Since adopted do not have a carrier pipe be coated with barrel 10; Therefore, can adopt the priming valve 46 such simple structures that only on the coating supply passageway 44 of coating machine main body 6, clamp air driven to be used as the coating open and close valve of coating machine main body 6 inside.
Coating machine main body 6 has towards being coated with barrel 10 supplies with the working solution supply passageway 50 of working solution, and the working solution supply passageway 50 in this coating machine main body communicates with the interior working solution supply passageway 52 of robots arm 1 arm.
When the working solution supply passageway 52 to robots arm 1 described, the interior working solution supply passageway 52 of this arm had the working solution that 54 supplies from the working solution source are come and under pressure, is supplied to the pump 56 that is coated with barrel 10, and this pump 56 is installed in robots arm 1.Comparatively it is desirable to, pump 56 is the for example gear pumps that can carry out careful flow-control.Under pressure, supplying with the working solution that comes from pump 56 is coated with barrel 10 or is back to working solution source 54 via current return circuit 60 through path transfer valve 58 actions of being located at robots arm 1 or coating machine main body 6 are supplied to.The working solution in working solution source 54 adopts the liquid (being typically the insulation diluent) of insulating properties.As variation, also can pump 56 be arranged at the outside of paint robot, rather than be arranged in the robots arm 1, and utilize the path transfer valve 58 that is built in robots arm 1 or coating machine main body 6 to come working solution is controlled to the supply that is coated with barrel 10.
On robots arm 1, except said pump 56 (gear pump), also be built-in with high voltage generator 62.The high voltage that is produced by high voltage generator 62 puts on bell-jar 4.Certainly, also can make high voltage generator 62 be built in coating machine main body 6.
In Fig. 1, reference marks 64 expression is used for the path of bleeding that the air of sneaking into working solution (insulation diluent) is extracted out, this bleed path 64 via by air operated open and close valve 66 and with the coating machine main body in working solution supply passageway 50 be connected.Drive valve through often making open and close valve 66; Make the working solution of working solution supply passageway 50 in the coating machine main body, the interior working solution supply passageway 52 of arm be back to working solution source 54, thereby can will sneak into the discharge of the air in the working solution supply passageway 52 in working solution supply passageway 50, the arm in the coating machine main body.
As the aspect that will pay close attention to, coating machine main body 6 has detergent remover supply passageway 70.The upstream extremity of the above-mentioned coating supply passageway 44 of one end of this detergent remover supply passageway 70 in the coating machine main body, promptly accommodate with recess 40 adjacent positions with tube and be connected with coating supply passageway 44.The other end (upstream extremity) of the detergent remover supply passageway 70 in this coating machine main body disposes the 5th check-valves 72 at the lateral opening of the upper end of coating machine main body 6 at this opening portion.The 5th check-valves 72 constitutes by at present known fixed valve base with by spring energized movable spool.
As second aspect that will pay close attention to, coating machine main body 6 is accommodated with recess 40 with tube and is adjacent to have two actuators 74,76 of being with push rods, and above-mentioned first actuator 74 and second actuator 76 are by air driven.The push rod 74a (Fig. 6) of first actuator 74 is to being coated with first check-valves 30 (coating path) the generation effect of barrel 10, so that 30 positive openings of first check-valves.The push rod 76a of second actuator 76 is to being coated with second check-valves 32 (working solution supply passageway) the generation effect of barrel 10, so that the second check-valves Final 32 system is opened (Fig. 8).
Fig. 5 and Fig. 6 represent to be coated with first check-valves 30 of barrel 10.As stated, first check-valves 30 is clipped on first internal path 20 that coating that confession flows out from coating bag 12 passes through.With reference to Fig. 5, Fig. 6, be coated with barrel 10 and have the sleeve with the level 300 that is positioned at from the outstanding position of its lower end faced downwards and can displacement on above-below direction, be formed with the valve seat 302 of first check-valves 30 in the lower end of this movable sleeve 300.The movable spool 304 that falls to being positioned at this valve seat 302 by all springs 306 towards direction (below) application of force that falls to being positioned at valve seat 302.On the other hand, sleeve 300 with the level by periphery spring 308 towards the below application of force.Be formed with the supporting member of giving prominence to below the court 310 on the lower surface of movable spool 304, this supporting member 310 is outstanding towards the below from sleeve 300 with the level.The push rod 74a of above-mentioned first actuator 74 through with push away this supporting member 310 more than above-mentioned supporting member 310 butts, thereby can make first check-valves, 30 positive openings (Fig. 6) as open and close valve.
On the recess 40 of coating machine main body 6, be formed with the end portion that is used to accommodate above-mentioned sleeve with the level 300 and be second recess 402 of less right angle part 300a, the coating supply passageway 44 of application pusher side is at the core opening of this second recess 402.That is, above-mentioned coating supply passageway 44 is at the core opening of the bottom surface of second recess 402.In addition, in the bottom surface of this second recess 402, dispose sealing ring 404 in the periphery of the opening of coating supply passageway 44.
Fig. 5 and Fig. 6 represent to be coated with barrel 10 and are positioned the recess 40 of coating machine main body 6 and utilize locking member 42 (Fig. 1) will be coated with the state that barrel 10 is fixed in coating machine main body 6.What pay close attention to is between the bottom surface of the lower surface of sleeve 300 with the level and second recess 402, to have sealing ring 404.Since the sleeve with the level 300 that is coated with barrel 10 by periphery spring 308 towards the below application of force, therefore, be fixed in coating machine main body 6 through being coated with barrel 10, make the lower surface of sleeve 300 with the level be in the state that is pressed against sealing ring 404.Owing to the connecting portion between the coating supply passageway 44 of first internal path (coating path) 20 that is coated with barrel 10 and coating machine main body 6 is sealed by sealing ring 404; Therefore, can prevent to accommodate the situation of polluting above-mentioned recess 40,402 with recess 40, second recess 402 from being coated with the circuitous tube of coating that barrel 10 flows out to coating machine main body 6.
Fig. 5 representes that first check-valves 30 that is coated with barrel 10 given play to stop valve (Japanese: the state of function ス ト Star パ man's cap used in ancient times); Under the state of this Fig. 5, the function that first check-valves 30 has been given play to original check-valves flows out (coating path 20 is closed in the tube) to stop coating from being coated with barrel 10.
On the other hand, Fig. 6 movable spool 304 of representing to utilize push rod 74a to push away first check-valves 30 forcibly is forcibly to open the state of first check-valves 30.As stated, push rod 74a utilization is moved with first actuator 74 that first check-valves 30 conjointly is arranged at coating machine main body 6.First actuator 74 is by air driven.Under the positive opening state shown in Fig. 6; Owing to be in 302 the state of lifting off a seat as the movable spool 304 of first check-valves 30 of open and close valve; Therefore, the coating of coating bag 12 can flow out (the interior coating path 20 of tube is opened) from its lower ending opening 12c by being coated with the barrel 10 via coating path 20 in the tube.
As stated, be coated with barrel 10 have can displacement on above-below direction sleeve 300.This sleeve 300 forms the exit portion that the coating in the coating bag 12 that supplies formation coating reception room flows out, and the following table faced downwards that also is configured in addition from being coated with barrel 10 is outstanding.In addition, be provided with first check-valves 30 in the lower end of this sleeve 300.In addition, utilize periphery spring 308 towards the below to movable sleeve 300 application of forces.On the other hand; Coating machine main body 6 has second recess 402 that the path part 300a with sleeve 300 accommodates; The upper end of the application supply passageway 44 of coating machine main body 6 disposes sealing ring 404 at the core opening of the bottom surface of this second recess 402 around this opening.
In the time will being coated with barrel 10 and being assembled to coating machine main body 6; By the lower surface and sealing ring 404 face contacts of spring energized movable sleeve 300 (path part 300a); By this, the sleeve 300 that constitutes the coating outlet be coated with barrel 10 is in the state that is sealed by sealing ring 404 with pigment transfer path between the coating supply passageway 44 of coating machine main body 6.By this, can prevent from the wall that is coated with coating pollution second recess 402 that barrel 10 flows out etc.
According to said structure, can clean at the coating supply passageway 44 that is equipped with under the state that is coated with barrel 10 coating machine main body 6.The packet mode that this advantage is not limited to embodiment is coated with barrel 10; Be coated with at present known piston type that being coated with of disclosed employing membrane pump also is identical in the barrel in barrel and the patent documentation 7; Therefore, being coated with in the barrel, especially in piston type and membrane pump formula; If omitted the barrel that is coated with of carrier pipe, then adopt the advantage of said structure bigger.
Fig. 7, Fig. 8 are the details drawings of being located at second actuator 76 of coating machine main body 6 for second check-valves 32 that positive opening is coated with second internal path (working solution supply passageway) 22 of barrel 10.This second actuator 76 can make push rod 76a advance and retreat through the turnover of air, and makes the movable spool 320 of second check-valves 32 322 (Fig. 8) that forcibly lift off a seat through coming in before the push rod 76a.This point is identical with above-mentioned first actuator 74 and first check-valves 30, but in the following areas, second actuator 76 of band push rod 76a adopts distinctive structure.
Promptly; The push rod 76a of second actuator 76 of coating machine main body 6 not only has with its upper surface makes forcibly lift off a seat 322 function (Fig. 8) of the movable spool 320 of second check-valves 32, and this push rod 76a also constitutes a part of the working solution supply passageway 50 of coating machine main body 6 being opened the open and close valve mechanism that closes.
With reference to Fig. 7, the sleeve 500 that above-mentioned push rod 76a is configured the exit portion (accommodating the working solution exit portion with recess 40 towards tube) of the working solution supply passageway 50 in the coating machine main body surrounds, and on the inner peripheral surface of the upper end of this sleeve 500, is formed with valve seat 502.On the other hand, be formed with the radially spool 504 of protuberance in the upper end of push rod 76a.Above-mentioned valve seat 502 and spool 504 constitute opens the open and close valve mechanism 506 that closes with the exit portion of the working solution supply passageway 50 of coating machine main body 6.
In Fig. 7, when push rod 76a towards the top during displacement, the spool 504 with this push rod 76a one of open and close valve mechanism 506 lifts off a seat 502 and drive valve.As stated, when this push rod 76a towards the top during displacement, positive opening is coated with second check-valves 32 (arrow of Fig. 8) of barrel 10.
When push rod 76a towards the below during displacement, spool 504 falls to being positioned at valve seat 502, makes open and close valve mechanism 506 be in closing state.Certainly,, make second check-valves 32 that is coated with barrel 10 give play to its original function, therefore, can utilize this second check-valves 32 to stop working solution to spill from being coated with barrel 10 as check-valves through the backward movement of this push rod 76a.
Push rod 76a has the flange 78 that is fixedly set in its base end part (bottom of Fig. 7), this flange 78 by spring 80 towards the below application of force.Therefore, when push rod 76a is flat by spring towards the below application of force, consequently, open and close valve mechanism 506 by spring 80 towards closing the valve direction application of force.
According to said structure; In being coated with the process that barrel 10 is installed on coating machine main body 6, in addition, be fixed on the coating machine main body 6 even if be coated with barrel 10; Only otherwise make 76 actions of second actuator, just working solution (insulation diluent) is spilt from coating machine main body 6 yet.Certainly, in being coated with barrel 10, second check-valves 32 also capable of using stops working solution (insulation diluent) from confined space 14 (work liquid chamber), to spill.
Be back to Fig. 1 once more, with reference to this Fig. 1, the action in coating process describes to electrostatic atomizer 2.In coating process; First actuator 74 and 76 actions of second actuator; Push rod 74a, 76a are advanced; Through advancing of this push rod 74a, 76a, first check-valves 30 and second check-valves 32 are maintained the state (in the tube in coating path 20 and the tube working solution supply passageway 22 all open) of positive opening.
(1) first check-valves 30 (coating path in the tube) is forced and opens;
(2) second check-valves 32 (working solution supply passageway in the tube) are forced and open.
Through control gear pump 56 opening/closings or control access transfer valve 58, can control the amount that is supplied to the working solution (insulation diluent) that is coated with barrel 10.In addition, utilization is supplied to the working solution that is coated with barrel 10 coating bag 12 is exerted pressure, and coating is flowed out from coating bag 12 under controlled state.Close the opening/closing that synchronously carries out gear pump 56, the path change action of path transfer valve 58 with the opening of priming valve 46 of coating machine main body 6.By this, can improve coating begins and supplies with the control accuracy that stops towards the supply of bell-jar 4.
At the time point that the application of stipulating finishes, the coating bag 12 that constitutes the coating reception room is in by the state that flattens fully, at this moment; The internal capacity of coating bag 12 (coating reception room) is minimum; Therefore, be coated with barrel with the existing piston formula and compare, the amount of coating that residues in coating bag 12 is few.
When carrying out the color replacement of electrostatic atomizer 2; With being coated with before barrel 10 changes of other color paint,, the state that is coated with barrel 10 carries out the cleaning of coating supply passageway 44 and bell-jar 4 in the coating machine main body 6 being coated with that barrel 10 unloads from coating machine main body 6 under being installed.
Fig. 9 representes the clean operation of the coating supply passageway 44 and the bell-jar 4 of coating machine main body 6.In this clean operation, clean being coated with under the state that barrel 10 is installed on coating machine main body 6 of will using.In cleaning operation; Remove the action of first actuator 74 and second actuator 76, push rod 74a, 76a are retreated, by this; First check-valves 30, second check-valves 32 have been given play to the function of original check-valves, close tin an interior coating path 20 and a working solution supply passageway 22.
In the detergent remover supply passageway 70 that is opened in coating machine main body 6 sides, insert and clean nozzle 84.In the time will cleaning the inlet of nozzle 84 insertion detergent remover supply passageways 70, the 5th check-valves 72 that is disposed at these detergent remover supply passageway 70 inlets is cleaned nozzle 84 positive openings.Through making 86 actions of external path transfer valve, make detergent remover or air under pressure, be supplied to detergent remover supply passageway 70 from cleaning nozzle 84.Prior to the supply of this detergent remover or air, make the priming valve 46 that is clipped on coating supply passageway 44 in the coating machine main body drive valve.In addition, with beginning to drive bell-jar 4 rotations from cleaning nozzle 84 supply detergent removers.
State in the clean operation of each valve coating supply passageway 44 in the coating machine main body is described below.
The positive opening of (1) first check-valves 30 (coating) is disengaged (function of common check-valves);
The positive opening of (2) second check-valves 32 (working solution supply) is disengaged (function of common check-valves);
(3) the 5th check-valves 72 (detergent remover in the coating machine main body) are cleaned nozzle 84 positive openings;
(4) valve left by priming valve 46;
(5) bell-jar 4 rotations.
When under pressure when cleaning nozzle 84 and supply with detergent removers or air; This detergent remover or air flow into coating supply passageway 44 in the coating machine main body via the detergent remover supply passageway 70 of coating machine main body 6, and discharge from bell-jar 4 via this coating supply passageway 44.Through flowing of this detergent remover or air coating supply passageway 44 in the coating machine main body and bell-jar 4 are purified.The typical case, detergent remover and air alternately are supplied to coating machine main body 6 from cleaning nozzle 84.
Since the downstream of detergent remover supply passageway 70 as stated with the coating machine main body in the upstream (upper end) of coating supply passageway 44 link together; Therefore; The detergent remover or the air that flow into coating supply passageway 44 arrive the front end that is positioned at from first check-valves 30 of outstanding position, the lower end that is coated with barrel 10, purify with the leading section to this first check-valves 30.Given play to the function of original check-valves owing to first check-valves 30 and closed an interior coating path 20 (Fig. 5), therefore, coating path 20 is in the state that is cut off by first check-valves 30 with the interior coating supply passageway 44 of coating machine main body in the tube.Therefore, can utilize first check-valves 30 to prevent the inside of detergent remover intrusion coating bag 12.Though detergent remover typically is a diluent, also can be the clean water that in water, has added surfactant.
In addition; Because at the sleeve that is assembled with this first check-valves 30 300 and contain the sealing ring 404 (Fig. 5) that clamps between second recess 402 of lower end path part 300a of this sleeve 300 with the front end face face contact of sleeve 300; Therefore; The pigment transfer passage portion that is limited on sealing ring 404 also can be cleaned by detergent remover or air certainly, and it is whole at the wall that interior detergent remover pollutes second recess 404 to prevent to comprise coating.Therefore, utilize above-mentioned detergent remover, can not only make the coating supply passageway 44 of coating machine main body 6 cleaning that becomes, the coupling part that also can make and be coated with barrel 10 cleaning that becomes.In addition, also can make the leading section of the sleeve 300 that constitutes the coating outlet be coated with barrel 10 cleaning that becomes.This is the advantage that pay close attention to of failing at present to see.Certainly, generally speaking the structure of having given play to this advantage is not limited to the barrel that is coated with of packet mode, also can be applicable to the tube that is coated with barrel, membrane pump formula in the form of piston.If need carry out cleaning of bell-jar 4, detergent remover is dispersed on the bell-jar 4 from the outside.When the clean end of coating machine main body 6, at last air is supplied to coating machine main body 6 from cleaning nozzle 84, by this, remove being attached in the coating machine main body detergent remover of coating supply passageway 44 and bell-jar 4.
After the clean end of coating machine main body 6, then, be installed in the replacing that is coated with barrel 10 of coating machine main body 6.Because the cleaning of clean and sealing ring 404 of coating machine main body 6 finished, and therefore, is installed on coating machine main body 6 as long as will be filled with the barrel 10 that is coated with of other color paint, just can begin application once more.
For being coated with barrel 10 after unloading from coating machine main body 6, carry out cleaning of coating bag 12.Figure 10 is the figure that is used to explain the clean operation of coating bag.The barrel 10 that is coated with that uses is located in the assigned position that bag is cleaned station 88.This location when being coated with barrel 10 and being located in assigned position, utilizes locking mechanism 90 fixedly to be coated with barrel 10 with identical with respect to the location of coating machine main body 6.
In the clean station 88 of bag, be provided with corresponding to the actuator 880,882,884,886 that is coated with first of barrel 10～the 4th check- valves 30,32,34,36 with first～the 4th push rod.Since this actuator 880～886 with first～the 4th push rod given play to above-mentioned coating machine main body 6 with the actuator 74,76 of first, second push rod identical functions in fact, therefore, omit its detailed explanation.
The initial coating bag 12 that is coated with barrel 10 that is arranged at the clean station 88 of bag is in the state that is crushed.In the cleaning of the coating bag 12 that constitutes the coating reception room; Being accompanied by on one side (i) makes 12 expansions of coating bag with the volume that enlarges the coating reception room, (ii) flatten coating bag 12 with the such operation of the volume that reduces the coating reception room; Detergent remover, air are got in the coating bag 12; In addition, also carry out the discharge of detergent remover, air." expansion, the flattening " of coating bag 12 is made as one group, both can it carried out once just finishing, also can it be carried out repeatedly repeatedly.Certainly,, then can flatten coating bag 12 to greatest extent, reclaim to greatest extent and residue in the coating in the coating bag 12 prior to the cleaning of coating bag 12 if need.
Each open and close valve is that the state of check- valves 30,32,34,36 in the expansion process of coating bag is described below.
The positive opening of (1) first check-valves 30 (coating) is disengaged (function of common check-valves);
The positive opening of (2) second check-valves 32 (working solution supply) is disengaged (function of common check-valves);
(3) the 3rd check-valves 34 (detergent remover supply) are forced and open;
(4) the 4th check-valves 36 (working solution discharge) are forced and open.
Shown in figure 10, clean in the station 88 at bag and to be provided with air source and detergent remover source (diluent or water), from this air source and detergent remover source air supply, detergent remover.The switching of air and detergent remover utilizes path transfer valve 888 and carries out.Make air, detergent remover alternately be supplied to coating bag 12 through this path transfer valve 888 via the 3rd internal path that is coated with barrel 10 (detergent remover supply passageway) 24.As stated, first check-valves 30 of the outlet of coating bag 12 (lower end oral area 12c) has been given play to the function of common check-valves, makes coating path 20 be in closing state.Through air or coating are supplied to the inside of coating bag 12 from the 3rd internal path (the detergent remover supply passageway) 24 that be coated with barrel 10 via the upper end oral area 12b of coating bag 12, thereby make 12 expansions of coating bag.Thereupon, be filled in working solution in the confined space 14 that constitutes the work liquid chamber be coated with barrel 10 by via forcing and extrude passively from being coated with barrel 10 in the 4th internal path 26 (working solution drain passageway) of the 14a of airtrapping portion opening.Be recycled to the working solution source from the working solution that is coated with barrel 10 outflows.
As the concrete method of cleaning of coating bag 12, can enumerate out following example.
First operation (expansion process of coating bag): via the 3rd internal path (detergent remover supply passageway) 24 towards coating bag 12 air supplies so that coating bag 12 expansion makes the internal capacity of coating bag 12 be extended to roughly maximum.By this, can make the main body 12a of coating bag 12 be in the state that does not have fold.First check-valves 30 (coating) is in closing state.
Second operation (detergent remover supply operation): detergent remover is supplied to coating bag 12 and detergent remover is flowed along the inner surface of coating bag 12, so that coating bag 12 is cleaned.First check-valves 30 (coating) is in closing state.
The 3rd operation (flattening process of coating bag): flatten coating bag 12, the internal capacity of coating bag 12 is dwindled so that the detergent remover of coating bag 12 is discharged.
As required, carry out second operation and the 3rd operation repeatedly.
The state of each open and close valve (check- valves 30,32,34,36) in above-mentioned the 3rd operation (flattening process) of coating bag 12 is described below.
(1) first check-valves 30 (coating) is forced to be opened;
(2) second check-valves 32 (working solution supply) are forced and open;
The positive opening of (3) the 3rd check-valves 34 (detergent remover supply) is disengaged (function of common check-valves);
The positive opening of (4) the 4th check-valves 36 (working solution discharge) is disengaged (function of common check-valves).
Shown in figure 10, in the clean station 88 of bag, be provided with gear pump 890.In above-mentioned the 3rd operation (flattening process), will under pressure, be supplied to by the working solution of the amount of gear pump 890 control and be coated with barrel 10.When the working solution entering was coated with the confined space 14 (work liquid chamber) of barrel 10, coating bag 12 was flattened by this working solution, and air and detergent removers in the coating bag 12 are pressed out to the outside via lower end oral area 12c.The reference marks 892 expression waste fluid containers of Figure 10, the detergent remover that flows out from coating bag 12 is contained in the waste fluid container 892.
As stated, with the expansion (expansion of the internal capacity of coating bag 12) of coating bag 12, flatten (dwindling of the internal capacity of coating bag 12) and be set as group, it is carried out one or many carry out repeatedly, cleaning so that the inside of coating bag 12 becomes.Then, air is got in the coating bag 12 and will be attached to coating bag 12 inner detergent removers and discharge, thereby finish the clean operation of coating bag 12.In the stage that the clean operation of coating bag 12 finishes, coating bag 12 is in the state (internal capacity of coating bag 12 is minimum state) that is crushed.
For being coated with barrel 10 after the clean end of coating bag 12, then filling paint in coating bag 12.Figure 11 is the figure that is used to explain the coating filling work procedure.The barrel 10 that is coated with after cleaning is located in the assigned position that coating is filled station 92.This location is identical with 88 the location of clean standing with respect to coating machine main body 6, bag, when being coated with barrel 10 and being located in assigned position, utilizes locking mechanism 94 fixedly to be coated with barrel 10.
Fill in the station 92 at coating, be provided with corresponding to being coated with in first of barrel 10～the 4th check-valves except supplying with the second relevant check-valves 32 and supply with first check-valves 30 the 3rd check-valves 34 of being correlated with, the actuator 920,922 with the first, the 4th push rod of the 4th check-valves 36 with detergent remover with working solution.Since this actuator 920,922 with first～the 4th push rod given play to above-mentioned coating machine main body 6 with the actuator 74,76 of first, second push rod identical functions in fact, therefore, omit its detailed explanation.
Each open and close valve is that the state of check- valves 30,36 in the coating filling work procedure is described below.
(1) first check-valves 30 (coating) is forced to be opened;
(2) the 4th check-valves 36 (working solution discharge) are forced and open.
Fill in the station 92 at coating and to be provided with gear pump 96, be filled in the coating bag 12 via the lower end oral area 12c of coating bag 12 through controlling coating that this gear pump 96 makes ormal weight for the coating with coating source is filled to coating bag 12 under pressure.Also can adopt the combination of flowmeter and flow control valve to replace the flow-control of this gear pump 96; Wherein, Above-mentioned flowmeter is used for the amount that under pressure, is supplied to the coating of coating bag 12 from pump is controlled; When the amount of the coating that utilizes this flow measurement to measure reached setting, above-mentioned flow control valve stopped the supply of coating towards coating bag 12.Because of the filling of coating makes 12 expansions of coating bag, the working solution that is full of confined space 14 is discharged to the outside via the 14a of airtrapping portion and the 4th internal path (working solution drain passageway) 26, and the working solution after this discharge is recycled to the working solution source.
Certainly, finish owing to before filling paint, be coated with cleaning of barrel 10, therefore, being filled in the color that is coated with the coating in the barrel 10 is arbitrarily.The barrel 10 that is coated with behind the end-of-fill of coating is stored for carrying out next application.
Above, the use of insulating thinner as the working fluid in the case of the embodiment described, when using water and other conductive liquid is used as the working fluid, they can be the voltage blocking mechanism (Japanese: ボ Hikaru Te a zip blow boots black body) is set the robot arm 1, when the Korean electrostatic coating machine 2 high voltage is applied (coating operations), using the voltage blocking mechanism electrically insulated.
Can enumerate out the variation of following example as the foregoing description.
(1) is built in and is coated with first of barrel 10～the 4th check-valves 30～36 and also can constitutes by the open and close valve of air driven.
(2) in the above-described embodiments, coating bag 12 comprises oral area 12b, 12c up and down, but also can be to have omitted upper end oral area 12b and the coating bag (Figure 12) that only comprises lower end oral area 12c.Reference marks 896 expression path transfer valves shown in Figure 12.In Figure 12, be clipped on coating bag 12 communicate to be coated with the check-valves that is coated with the barrel inner gateway 30～36 that barrel inner gateway and confined space 14 (work liquid chamber) communicate not shown.
(3) in the embodiment in figure 1, having adopted with working solution directly to coating bag 12 pressing mode, but shown in figure 13, also can be the barrel that is coated with that comprises the working solution bag 8 adjacent with coating bag 12.This working solution bag 8 constitutes the work liquid chamber, makes 8 expansions of working solution bag through supplying with working solution towards this working solution bag 8, thereby flattens coating bag 12.
(4) working solution bag 8 also can comprise two oral area 8a, 8b up and down, and the working solution in the working solution bag is discharged from the oral area 8a of upper end, and on the other hand, oral area 8b is supplied to working solution bag 8 so that 8 expansions (Figure 13) of working solution bag from the lower end with working solution.
(5) working solution bag 8 also can comprise an oral area 8b, and 8b is supplied to working solution bag 8 with working solution via this oral area, in addition, makes working solution from working solution bag 8, discharge (Figure 14) via this oral area 8b.In Figure 14, be clipped on coating bag 12 communicate to be coated with the check-valves that is coated with the barrel inner gateway that barrel inner gateway and working solution bag 8 communicate not shown.
(6) also can clean station 88 and be provided with and add vibration source 28, make and be coated with barrel 10 up and down and/or vibration (Figure 12) on the left and right directions in cleaning to utilize this to add vibration source 28 at bag.
(7) also can in wrapping clean station 88, prepare turntable 894 (Figure 12, Figure 14), on this turntable 894, fixedly be coated with barrel 10, the barrel 10 that is coated with in cleaning is rotated.In the drawings, reference marks O representes rotary middle spindle.This rotation can be a rotation on the direction, but comparatively it is desirable to, and alternately is rotated in the forward repeatedly and counter-rotating.
More than, illustration goes out to comprise that the barrel 10 that is coated with of coating bag 12 comes embodiments of the invention are illustrated, but the present invention also can be applicable to the barrel that is coated with of piston type, film piston formula.If an example that is coated with the inside method of cleaning of barrel 130 in the form of piston is described, then be described below with reference to Figure 15.
In Figure 15, the illustrated barrel 130 that is coated with has piston 132, clips this piston 132, is formed with work liquid chamber 134 above it, below piston 132, is formed with coating reception room 136.(I) of Figure 15 schematically expresses piston type is coated with the initial state that barrel 130 is positioned to clean the station.Should clean the station and clean station 88 (Figure 10) corresponding to above-mentioned bag.
At first, supply with working solutions, piston 132 is pressed to the deep of coating reception room 136, reclaim the coating (operation of Figure 15 (II)) that residues in coating reception room 136 towards the work liquid chamber 134 that is coated with barrel 130.Then, supply with the above push piston 132 of detergent remover (operation of Figure 15 (III)) towards coating reception room 136.Then, supply with working solution to press down piston 132, the detergent remover of coating reception room 136 is discharged (operation of Figure 15 (IV)) towards work liquid chamber 134.The degree that pushes pressure on the piston 132 in the operation of Figure 15 (III) and the operation (IV) can be arbitrarily; For example; Both can be with being pushed into topmost on the piston 132, also can stop on the way therein piston 132 on push away and be transferred to ensuing discharge operation (operation of Figure 15 (IV)).In order coating reception room 136 to be cleaned, also can detergent remover and air alternately be supplied to coating reception room 136 while going up push piston 132.In addition, air also capable of using then, is supplied to coating reception room 136 with detergent remover with the height that is pushed into a certain degree on the piston 132.Like this, the combination of the supply mode of air and detergent remover is arbitrarily, can be through the experiment decision.
Also can above-mentioned operation III and operation IV be made as one group, it be carried out one or many carry out repeatedly.In addition, as with reference to Figure 12 explanation, also can be in cleaning the edge up and down about or reach left and right directions up and down and apply vibration being coated with barrel 130.In addition, as with reference to Figure 12 and Figure 14 explanation, also can in cleaning, make to be coated with barrel 130 rotations.In Figure 14, though with above-mentioned packet mode be coated with the identical ground of barrel 10, clamped check-valves being coated with in the barrel inner gateway of communicating with the work liquid chamber 134 that is coated with barrel 130, coating reception room 136, in Figure 14, omit its diagram.As those skilled in the art can easily understand; Be coated with in the barrel 130 in the form of piston; Also can adopt the working solution drain passageway 26 of explanation among Fig. 1 etc., will supply with in the tube of the working solution in the working solution supply passageway and the work of discharge liquid chamber 134 in the tube of working solutions a working solution supply passageway towards work liquid chamber 134 and be formed at and be coated with barrel 130.
The present invention also can preferably be applicable to the disclosed barrel that is coated with that has used membrane pump in the patent documentation 8 (real the opening of Japan Patent put down the 04-87759 communique).
Utilizability in the industry
The present invention is applicable to electrostatic spraying.Especially, preferably be applicable to paint robot.
Symbol description
The arm of 1 paint robot
2 electrostatic atomizers
4 bell-jars
6 coating machine main bodys
10 are coated with fitted tube
12 coating bags (coating reception room)
20 are coated with first internal path (coating path) of barrel
30 first check-valves (the coating path in the tube)
Coating path in the 44 coating machine main bodys
46 priming valves
Detergent remover supply passageway in the 70 coating machine main bodys
300 sleeves
The fixed valve base of 302 sleeve lower ends
304 movable spools
All springs in 306 are (to the movable spool application of force: second spring)
308 periphery springs are (to the sleeve application of force: first spring)
402 accommodate second recess of sleeve
404 sealing rings

Claims (8)

1. electrostatic atomizer, comprising can be with respect to the barrel that is coated with of coating machine main body mounting or dismounting, and said coating machine main body receives from the said barrel that is coated with and supplies with the coating that comes so that workpiece is carried out application, it is characterized in that,
The said barrel that is coated with comprises:
(i) sleeve, this sleeve constitutes the said outlet that is coated with the said coating of barrel, and can displacement on above-below direction;
(ii) first spring, this first spring towards the below to the said sleeve application of force; And
(iii) coating open and close valve, this coating open and close valve are located at said sleeve and the outlet of said coating path are opened and close,
Said coating machine main body comprises:
(i) recess, this recess is accommodated said sleeve;
(ii) coating path, this coating path has the opening of on the bottom surface of said recess, offering, and receives from the said coating that is coated with barrel via this opening;
(iii) detergent remover supply passageway, this detergent remover supply passageway receives the detergent remover from the outside, and this detergent remover is guided to the upper end of said coating path; And
(iv) sealing ring, the sealing ring is disposed at the bottom surface of said recess, and is located at the outer peripheral portion of the open upper end of said coating path,
When said when being coated with barrel and being installed on said coating machine main body, the spring force that utilizes said first spring is pressed into the lower surface of said sleeve on the said sealing ring.
2. electrostatic atomizer as claimed in claim 1 is characterized in that,
Said coating open and close valve comprises:
Fixed valve base, this fixed valve base is formed at the lower end of said sleeve;
Movable spool, this movable spool falls to being positioned at said fixed valve base; And
Second spring, this said fixed valve base of second spring court is to the said movable spool application of force.
3. electrostatic atomizer as claimed in claim 2 is characterized in that,
In said coating machine main body, be built-in with actuator, push away the said push rod that is coated with the movable spool of barrel on this actuator has.
4. electrostatic atomizer as claimed in claim 1 is characterized in that,
Said be coated with to be built-in with in the barrel make said coating open and close valve open the actuator of closing.
5. electrostatic atomizer as claimed in claim 1 is characterized in that,
In the coating path of said coating machine main body, be provided with the priming valve that constitutes by open and close valve.
6. electrostatic atomizer as claimed in claim 1 is characterized in that,
The said barrel that is coated with is to utilize piston to extrude the piston type tube of coating.
7. electrostatic atomizer as claimed in claim 1 is characterized in that,
The said barrel that is coated with is through flattening the packet mode tube that the coating bag extrudes coating.
8. electrostatic atomizer as claimed in claim 1 is characterized in that,
The said barrel that is coated with is the membrane pump formula tube that is formed the coating reception room by retractable film.
CN201080042982.0A 2009-09-23 2010-09-21 Electrostatic coating machine employing removable paint cartridge Expired - Fee Related CN102639249B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2009-218332 2009-09-23
JP2009218332A JP5551908B2 (en) 2009-09-23 2009-09-23 Electrostatic coating machine with detachable paint cartridge
PCT/JP2010/066334 WO2011037112A1 (en) 2009-09-23 2010-09-21 Electrostatic coating machine employing removable paint cartridge

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CN102639249A true CN102639249A (en) 2012-08-15
CN102639249B CN102639249B (en) 2015-04-15

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KR (1) KR20120072374A (en)
CN (1) CN102639249B (en)
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KR102516650B1 (en) * 2017-04-21 2023-04-03 요트. 바그너 게엠베하 liquid tank for atomizer
JP7187275B2 (en) * 2018-11-13 2022-12-12 タクボエンジニアリング株式会社 Spray gun equipment for painting
WO2023194740A1 (en) * 2022-04-06 2023-10-12 Micropply Limited A detachable ground deposition accessory
GB202208009D0 (en) * 2022-05-31 2022-07-13 Micropply Ltd An autonomous ground deposition machine with removable cartridges

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KR20120072374A (en) 2012-07-03
TW201119745A (en) 2011-06-16
JP5551908B2 (en) 2014-07-16
CN102639249B (en) 2015-04-15
JP2011067711A (en) 2011-04-07

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