CN100400175C - Method and device for electrostatic coating - Google Patents
Method and device for electrostatic coating Download PDFInfo
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- CN100400175C CN100400175C CNB2004800071798A CN200480007179A CN100400175C CN 100400175 C CN100400175 C CN 100400175C CN B2004800071798 A CNB2004800071798 A CN B2004800071798A CN 200480007179 A CN200480007179 A CN 200480007179A CN 100400175 C CN100400175 C CN 100400175C
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- conductive coating
- electrostatic spraying
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- 238000000034 method Methods 0.000 title claims description 12
- 238000009503 electrostatic coating Methods 0.000 title 1
- 238000012432 intermediate storage Methods 0.000 claims abstract description 75
- 238000009413 insulation Methods 0.000 claims abstract description 45
- 239000000463 material Substances 0.000 claims description 165
- 238000000576 coating method Methods 0.000 claims description 91
- 239000011248 coating agent Substances 0.000 claims description 90
- 238000007590 electrostatic spraying Methods 0.000 claims description 74
- 239000007921 spray Substances 0.000 claims description 52
- 238000004140 cleaning Methods 0.000 claims description 51
- 239000012530 fluid Substances 0.000 claims description 24
- 230000037361 pathway Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 6
- 239000003086 colorant Substances 0.000 description 5
- 238000007610 electrostatic coating method Methods 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 238000005507 spraying Methods 0.000 description 5
- 238000013016 damping Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Abstract
An intermediate storage vessel (26) has a cylinder container (26a), a piston (28) provided in the cylinder container (26a) so as to be slidable in a reciprocating manner, and an inpour hole portion (32) and a discharge hole portion (34) that are opened in a cylinder chamber (30) where the piston (28) slides. The inpour hole portion (32) is provided above the discharge hole portion (34). An insulation cover (70) is provided so as to cover the intermediate storage vessel (26) and an insulation mechanism (20), and the cover is removable from the insulation mechanism (20) side.
Description
Technical field
The present invention relates to a kind of method and apparatus of implementing electrostatic spraying, it is by temporarily being fed to sprayed on material in the sprayed on material container, after this source of supply and sprayed on material container being electrically insulated from each other and being supplied to spray gun to carry out sprayed on material sprayed on material from source of supply.
Background technology
For example, it is a kind of being used for to apply high voltage to conductive coating material that known voltage intercepts, with to the technology of being implemented electrostatic spraying by spray such as body of motor vehicle.According to this technology, conductive coating material is incorporated in the intermediate storage vessel (intermediate storage mechanism) that insulate with earth potential temporarily, after this feed path that intermediate storage vessel and sprayed on material source of supply are connected with each other is cleaned and dried, intercept to form voltage.Then, will be applied in high-tension conductive coating material and be fed to spray gun from middle storage container, this spray gun is to being carried out electrostatic spraying by spray.
For example know a kind of electrostatic spraying device that is used for above-mentioned spraying coating process from Japanese kokai publication hei 6-60452 communique.According to Japanese kokai publication hei 6-60452 communique, as shown in figure 11, be provided with pump 1, and this pump 1 has sprayed on material inlet 1a as intermediate storage mechanism, conductive coating material is fed to this sprayed on material inlet 1a from sprayed on material feed path 2.Pump 1 transmits the conductive coating material of scheduled volume to flush coater 3 from sprayed on material outlet 1b under situation about being under pressure.
With the flow velocity of measured conductive coating material with according to the amount of the sprayed on material that from flush coater 3, ejects and predefined flow velocity compares mutually, and poor according between the flow velocity that is compared regulated the pressure of the pressure-air that is supplied to pump 1 changeably by pressure-regulating valve 6.Can reduce the size of pump 1, and can make the amount that is stored in the conductive coating material in the pump 1 keep constant.
Carry out spray treatment for the conductive coating material that will be supplied to pump 1 is supplied to flush coater 3, use the processing of sprayed on material filling pump 1, and in sprayed on material filling pump 1, air is easy to mix with sprayed on material.At this moment, mix with sprayed on material and the air that is incorporated in the pump 1 tends to move upward in pump 1.
On pump 1, sprayed on material outlet 1b is positioned at the top of sprayed on material inlet 1a.Therefore, as shown in figure 12, when piston 4 forward (along the direction shown in the arrow X) move, with sprayed on material when pump 1 is fed to flush coater 3, the air that enters in pump 1 top can be sent to flush coater 3 from sprayed on material outlet 1b.Therefore, be ejected into by the sprayed on material on the spray from flush coater 3 and contain the air that is blended in wherein, and can't form suitable spray patterns, so that can not carry out high-precision electrostatic spraying and handle.
In order to change the sprayed on material color, so that, clean to the inside of pump 1 with new sprayed on material with different colours.At this moment, will discharge from sprayed on material outlet 1b from the sprayed on material cleaning fluid that 1a is incorporated into the pump 1 that enters the mouth.But, because sprayed on material outlet 1b is positioned at the top of sprayed on material inlet 1a,, and through the new sprayed on material that has been incorporated in the pump 1 after cleaning at pump 1 and can mix with residual cleaning fluid so cleaning fluid remains in the pump 1 easily.Therefore, increased the sprayed on material amount that to discard, caused electrostatic spraying device uneconomical, and the danger of using the sprayed on material that is mixed with cleaning fluid to carry out the electrostatic spraying processing has been arranged.
And, according to Japanese kokai publication hei 6-60452 communique, usually electrostatic spraying device is installed on the robot apparatus, handle automatically to carry out electrostatic spraying.Hope is done electrostatic spraying device integral body compact and is installed on the robot apparatus.Therefore be necessary to arrange insulating mechanism 8 near pump 1.
In order to prevent that conductive coating material from leaking, pump 1 is made by dielectric resin material.Yet because the device for generating high voltage of having packed into to apply high voltage to conductive coating material, so high voltage is easy to surface leakage along pump 1 to insulating mechanism 8, causes dielectric breakdown.
So far, need be with pump 1 and the sizable distance of insulating mechanism 8 each intervals, the result causes can't be very compact on the whole with electrostatic spraying device.
Utilize the electrostatic spraying device of the above-mentioned type, as shown in figure 11, insulated part 8 is arranged between pump 1 and the sprayed on material source 2a.Insulated part 8 has valve system 8a, 8b and is connected between valve system 8a, the 8b and as the insulation tube 2b of feed path 2.Damping path D1 can be connected with valve system 8a, and sprayed on material source 2a, cleaning unit 9 and damping path D2 can be linked to each other with valve system 8b selectively.
In order to use the conductive coating material of above-mentioned electrostatic spraying device spraying same color, sprayed on material source 2a is linked to each other with feed lines 2 by valve system 8a, 8b, and by 2 pairs of pumps of this feed lines, 1 filled conductive sprayed on material.Then, the 8a of starter gate valve mechanism, insulation tube 2b being connected to damping path D1, and the 8b of starter gate valve mechanism, so that cleaning unit 9 is connected to insulation tube 2b.
As mentioned above, start at every turn pump 1 with under pressure, conductive coating material delivered to flush coater 3, when applying electrostatic spraying, in insulated part 8, all to clean the inside of insulation tube 2b.At this moment, when insulation tube 2b being cleaned, the conductive coating material that all will remain in the insulation tube 2b is discharged into the D1 of damping path from insulation tube 2b at every turn.
Therefore, in each cleaning treatment, untapped conductive coating material among the insulation tube 2b is unnecessarily emitted, cause the consumption of conductive coating material to increase.Especially, will carry out long time if electrostatic spraying is handled, then the amount of the conductive coating material of discharging from insulation tube 2b can enlarge markedly, and makes electrostatic spraying device very uneconomical.
Summary of the invention
Making the present invention is exactly in order to address the above problem.Thereby an object of the present invention is to provide and a kind ofly adopt simple processing and device, when reliably preventing air and cleaning fluid and the sprayed on material that is fed to spray gun from middle storing mechanism mixes, carry out the method and apparatus that electrostatic spraying realizes that high-quality electrostatic spraying is handled.
Another object of the present invention has provided a kind of method and apparatus, be used for when as much as possible reducing the conductive coating material that cleaning treatment drains, implementing electrostatic spraying, handle to realize economy and electrostatic spraying efficiently, and, consequently make this equipment to do compactly on the whole by utilizing simple device to provide the surface distance of expectation to prevent high voltage leakage.
In the method and electrostatic spraying device of enforcement electrostatic spraying according to the present invention, after being fed to intermediate storage mechanism from the sprayed on material source of supply sprayed on material by hand-hole, the insulation unit that is used for sprayed on material source of supply and intermediate storage mechanism are electrically insulated from each other is cleaned, and by squit hole the sprayed on material in the intermediate storage mechanism is supplied to spray gun, to implement electrostatic spraying.
At least to the insulation unit when cleaning (cleaning step) or when conductive coating material being supplied to spray gun (spraying step), hand-hole is arranged on the top of squit hole.In cleaning step, because cleaning fluid has been fed in the intermediate storage mechanism, so cleaning fluid remains in the bottom of intermediate storage mechanism easily.Because the squit hole of intermediate storage mechanism is arranged on the below of hand-hole, the cleaning fluid that therefore will remain in the bottom of intermediate storage mechanism emits reliably by squit hole.Therefore, the new sprayed on material that is fed in the intermediate storage mechanism can not mix with cleaning fluid.Effectively reduce the sprayed on material of discarding, and realized high-quality electrostatic spraying processing at an easy rate.
By hand-hole with sprayed on material when source of supply is fed to intermediate storage mechanism, if air has been incorporated in the intermediate storage mechanism, then air remains in the top of intermediate storage mechanism easily.In the spraying step, the squit hole of intermediate storage mechanism is arranged on the below of hand-hole.
Therefore, when by squit hole the sprayed on material in the intermediate storage mechanism being supplied to spray gun, the air that remains in the top of intermediate storage mechanism can not be incorporated into the spray gun from squit hole.Therefore, utilize simple the processing and device, prevented that reliably air from mixing mutually with the sprayed on material that is fed to spray gun from middle stocking mechanism, make and realize that easily high-quality electrostatic spraying is treated as possibility.
On the displaceable member of electrostatic spraying device, cylindrical chamber is installed, and when displaceable member was in the attitude of basic horizontal, hand-hole was positioned at the top of squit hole.Therefore, when for example carrying out spray treatment simultaneously displaceable member remains on the attitude of basic horizontal, the squit hole of intermediate storage mechanism is positioned at the below of hand-hole at any time.Therefore, prevented that as much as possible the sprayed on material that will be mixed with air is supplied to spray gun.
And, according to the present invention, when the conductive coating material of scheduled volume by feed path when the sprayed on material source is supplied to container, stop from sprayed on material source supply conductive coating material, and the conductive coating material that will remain in the unit that insulate at least is supplied to this container.In other words, in the insulation unit, there is the air that has replaced conductive coating material.Then, the insulation unit is cleaned, and make sprayed on material source and container insulated from each other, the conductive coating material in the container is supplied to spray gun thereupon, with the enforcement electrostatic spraying.
Because the conductive coating material that will remain in the insulation unit temporarily has been supplied to container, so when the insulation unit was cleaned, conductive coating material can not remain in the insulation unit.Therefore, when the insulation unit is cleaned, prevented that as much as possible untapped conductive coating material from unnecessarily being emitted.Therefore, can realize economy and effectively electrostatic spraying processing.
In the conductive coating material that will use same color, be supplied to spray gun with the enforcement electrostatic spraying conductive coating material in the container, and make the conductive coating material that remains in the container temporarily turn back to the insulation unit afterwards.Therefore, when container is filled by conductive coating material, prevented that effectively air from mixing mutually with conductive coating material, thereby avoided forming underproof spray patterns by simple processing.
Description of drawings
Fig. 1 is the schematic diagram that is used for realizing according to the electrostatic spraying device of electrostatic coating method of the present invention;
Fig. 2 is mounted in the side view of the intermediate storage container on the robotic arm of electrostatic spraying device;
Fig. 3 is mounted in the plane of the intermediate storage container on the robotic arm shown in Fig. 2;
Fig. 4 is mounted in the cross-section front view of the intermediate storage container on the robotic arm shown in Fig. 2;
Fig. 5 is the flow chart of electrostatic coating method;
Fig. 6 is that the expression electrostatic spraying device is operated the schematic diagram that sends intermediate storage vessel with the conductive coating material in the butterfly gate mechanism that will remain in electrostatic spraying device to;
Fig. 7 is that the expression electrostatic spraying device is operated the schematic diagram with the butterfly gate mechanism of cleaning electrostatic spraying device;
Fig. 8 is that the expression electrostatic spraying device is operated to carry out the schematic diagram of spray treatment by injection conductive coating material from the spray gun of electrostatic spraying device;
Fig. 9 is that the expression electrostatic spraying device is operated will remain in conductive coating material in the intermediate storage container after finishing spray treatment and temporarily turned back to schematic diagram in the butterfly gate mechanism;
Figure 10 is the schematic diagram of the operation carried out when air is present in the intermediate storage container of expression electrostatic spraying device;
Figure 11 is a disclosed electrostatic spraying device and the schematic diagram that is combined in the butterfly gate mechanism in this electrostatic spraying device in the Japanese kokai publication hei 6-60452 communique; With
Figure 12 is the operation chart of the pump of the electrostatic spraying device shown in expression Figure 11.
The specific embodiment
Fig. 1 is the schematic diagram that is used for carrying out according to the electrostatic spraying device 10 of electrostatic coating method of the present invention.
This electrostatic spraying device 10 comprises that the color of ground connection changes device valve system 12, has first cleaning valve 14 of the supply that is used for controlling dry air (A), water (W), cleaning fluid (S) etc. and can supply a plurality of sprayed on material valve 16a, 16b, the 16c of the conductive coating material with different colours.Butterfly gate mechanism 20 changes device valve system 12 by feed path 18a with color and is connected, and first vent pathway 23 is connected with feed path 18a by first orifice valve 21.
Be connected with the 3rd cleaning valve 48 of the supply that is used to control dry air (A), water (W), cleaning fluid (S) etc. with the 3rd vent pathway 46.
Shown in Fig. 2 and 3, electrostatic spraying device 10 has removable part, and for example, robotic arm 60 is fixed with installing plate 62 on this mechanical arm 60.On installing plate 62, be installed with insulator foot 64, and for example be fastened on this base 64 by the screw supporting seat 66 that will insulate.The cylindrical chamber 26a of intermediate storage container 26 is supported with horizontal attitude by supporting seat 66.
As shown in Figure 4, base 64 (along the indicated direction of arrow B) on both sides opposite on the diametric(al) of cylindrical chamber 26a has a plurality of groove 64a that are defined in wherein.Groove 64a extends along cylindrical chamber 26a axial (by the arrow A indicated direction among Fig. 3).Insulating lid 70 has grooved profiles, has the opposite end 70a of thin downward extension, and they are inserted among the corresponding groove 64a and by bolt 71 and are fixed on the base 64.
Color is installed on installing plate 62 changes device valve system 12, second cleaning valve 24 and servomotor 36.Servomotor 36 has rotating shaft 36a, and the ball screw 72 of this rotating shaft 36a and ball screw device 37 is linked together coaxially.Ball screw 72 rotatably supports along the extension of the direction shown in the arrow A and by frame unit 74.
When carrying out spray treatment, robotic arm 60 keeps the attitude of basic horizontal.Under the attitude of basic horizontal, the squit hole 34 of intermediate storage container 26 is positioned at the below of hand-hole 32 at any time.
With reference to the flow process of Fig. 5, the operating process of the electrostatic spraying device 10 that constitutes thus is described in conjunction with electrostatic coating method according to the present invention below.
At first, directional control valve 22a, the 22b by butterfly gate mechanism 20 is with feed path 18a, electric insulating tube 18b and feed path 18c be connected to each other (step S1).The for example sprayed on material valve 16a that color is changed device valve system 12 opens (step S2), and with servomotor 36 energising (step S3) of intermediate storage container 26.
As shown in Figure 1, the conductive coating material with certain color is supplied out from sprayed on material valve 16a under pressure.This conductive coating material flows through feed path 18a, electric insulating tube 18b and feed path 18c, and fills the cylindrical cavity 30 of intermediate storage container 26, is fed to spray gun 40 (step S4) through drive access 38 then.In such supply conductive coating material, trigger valve 44 and be close and second orifice valve 42 close.
When having finished the supply of conductive coating material ("Yes" among the step S4), supplied a certain amount of conductive coating material, in the amount of described conductive coating material, do not contained the residual amount of the conductive coating material in electric insulating tube 18b at least to the cylindrical cavity 30 of intermediate storage container 26.
Control proceeds to step S5 then, and in this step, 16a closes with the sprayed on material valve, and makes servomotor 36 continue energising.At this moment, start first orifice valve 21 feed path 18 is connected to (see figure 6) on first vent pathway 23.Along with piston 28 moves along the direction shown in the arrow A 1, the conductive coating material that remains among the feed path 18c is drawn in the cylindrical cavity 30, air is incorporated at least replaces conductive coating material among the electric insulating tube 18b.
If finished cylindrical cavity 30 filled conductive sprayed on material ("Yes" among the step S6), then (step S7) cleaned in butterfly gate mechanism 20 to middle reservoir vessel 26.Specifically, as shown in Figure 7, directional control valve 22a, the 22b of butterfly gate mechanism 20 be converted to second cleaning valve 24 is linked to each other with second vent pathway 25 by electric insulating tube 18b.
In second cleaning valve, 24 supply cleaning fluids (water or diluent), the inside of electric insulating tube 18b has obtained cleaning, and waste liquid is discharged into second vent pathway 25 from electric insulating tube 18b.Dry the inside of electric insulating tube 18b from second cleaning valve 24 supply air then, thereby make directional control valve 22a, 22b be electrically insulated from each other ("Yes" among the step S8).
Then, as shown in Figure 8, will trigger valve 44 and open, and, piston 28 be moved, along the direction shown in the arrow A 2 under pressure, conductive coating material is delivered to the drive access 38 from cylindrical cavity 30 to servomotor 36 energisings.Now conductive coating material spray from spray gun 40 by triggering valve 44, and high voltage is imposed on conductive coating material, with to by spray (not shown) enforcement electrostatic spraying (step S9).
When electrostatic spraying was finished dealing with, control proceeded to step S10, in this step, the conductive coating material that remains in the intermediate storage vessel 26 is temporarily turned back in the butterfly gate mechanism 20.Specifically, as shown in Figure 9, will trigger valve 44 and close. Directional control valve 22a, 22b by butterfly gate mechanism 20 are connected with each other feed path 18c, electric insulating tube 18b and feed path 18a, and by first orifice valve 21 feed path 18a are linked to each other with first vent pathway 23.
When to servomotor 36 energising so that piston 28 when the direction shown in the arrow A 2 moves, push among the feed path 18c and temporarily turn back among the electric insulating tube 18b remaining in conductive coating material in the cylindrical cavity 30.At this moment, the air that will remain among electric insulating tube 18b and the feed path 18c by conductive coating material has pushed among the feed path 18a, and has been discharged in first vent pathway 23 that links to each other with feed path 18a.
When sprayed on material valve 16a being opened, being supplied to feed path 18a so that to the time, do not have air and mix mutually with conductive coating material by the conductive coating material of spray spraying same color with conductive coating material with same color.Like this, prevented from effectively air is incorporated in the intermediate storage container, and avoided forming underproof spray patterns by simple processing.
In this case, according to present embodiment, as shown in Figure 1, conductive coating material is changed device valve system 12 from color be supplied to intermediate storage container 26, and the cylindrical cavity 30 of middle reservoir vessel 26 is filled the conductive coating material of scheduled volume.
Then, as shown in Figure 6, stop to change device valve system 12 supply conductive coating materials from color, and to servomotor 36 energisings, so that the conductive coating material among the feed path 18c is drawn in the cylindrical cavity 30.Therefore, electric insulating tube 18b includes the air that has replaced conductive coating material at least.When butterfly gate mechanism 20 is cleaned, can residual conductive coating material in electric insulating tube 18b.
According to present embodiment, when butterfly gate mechanism 20 is cleaned, prevented that as much as possible the conductive coating material of not usefulness residual in electric insulating tube 18b is discharged.Therefore, can easily realize economy and electrostatic spraying efficiently processing.
When stopping, can only making servomotor 36 energisings from color change device valve system 12 supply conductive coating materials.Therefore, prevented from unnecessarily to discharge conductive coating material effectively by simple control processing.Especially, when carrying out long electrostatic spraying and handle, when butterfly gate mechanism being cleaned, tend to from electric insulating tube 18b, discharge a large amount of conductive coating materials at every turn.Therefore, electrostatic spraying device 10 has improved economy greatly.
In order to use color to be different from the new conductive coating material of top conductive coating material, after superincumbent spray treatment is finished, stop to apply high voltage to spray gun 40, and directional control valve 22a, the 22b of conversion butterfly gate mechanism 20 start first cleaning valve 14 cleaning fluid is introduced the cylindrical cavity 30 of intermediate storage container 26.Cleaning fluid cleans cylindrical cavity 30 and drive access 38, and afterwards cleaning fluid is discharged from the 3rd vent pathway 46 by second orifice valve 42.The conductive coating material that for example sprayed on material valve 16b that changes device valve system 12 by color will have different colours is fed in the cylindrical cavity 30 of intermediate storage container 26, and the mode identical with mode recited above carried out spray treatment.
When the cylindrical cavity 30 to cylindrical chamber 26a cleans, the cleaning fluid that is incorporated in the cylindrical cavity 30 is discharged from the squit hole 34 that is arranged in hand-hole 32 belows reliably.Therefore, when the conductive coating material that will have different colours was supplied to cylindrical cavity 30, conductive coating material can not mix with the cleaning fluid that will remain in the cylindrical cavity 30 in other cases.Like this, utilize simply to install and effectively and reliably realized changing the color of conductive coating material and the processing of cleaning cylindrical cavity 30, make whole color change and spray treatment efficient very high at an easy rate.
As shown in Figure 1, when the cylindrical cavity 30 that conductive coating material is fed to cylindrical chamber 26a from sprayed on material valve 16a by hand-hole 32, if air has been incorporated in the cylindrical cavity 30, then air can remain in the top of cylindrical cavity 30 easily.
According to present embodiment, the squit hole 34 of cylindrical chamber 26a is disposed in the below of ingate 32.Therefore, when piston 28 moves (as shown in figure 10) when by squit hole 34 conductive coating material being fed to spray gun 40 from cylindrical cavity 30 along the direction shown in the arrow A 2, the air that remains in the cylindrical cavity 30 can not be incorporated in the spray gun 40 from squit hole 34.
Therefore,, prevented that reliably air from mixing with the sprayed on material that is fed to spray gun 40 from middle reservoir vessel 26, made and realize that easily high-quality electrostatic spraying is treated as possibility by simple processing and device.
And, according to present embodiment, as shown in Figure 2, intermediate storage container 26 is installed on the robotic arm 60, and when robotic arm 60 was in the attitude of basic horizontal, hand-hole 32 was positioned at the top of squit hole 34.Therefore, when making robotic arm 60 remain on the attitude of basic horizontal, the squit hole 34 of intermediate storage container 26 is positioned at the below of hand-hole 32 at any time.Therefore, prevented that as much as possible the conductive coating material that will be mixed with air is fed to spray gun 40.
In the present embodiment, exemplified the removable part of robotic arm 60 as electrostatic spraying device 10.Yet removable built-up section is not limited to robotic arm, can be on the load bearing seat that moves on the direction of for example three normal axis and intermediate storage container 26 can be installed in.
According to present embodiment, the cylindrical chamber 26a of intermediate storage container 26 is arranged on the base 64, and butterfly gate mechanism 20 is arranged in cylindrical chamber 26a top, and between butterfly gate mechanism 20 and cylindrical chamber 26a, be furnished with insulation board 68.
Because insulation board 68 is between intermediate storage container 26 and butterfly gate mechanism 20, therefore provide sufficient surface distance along insulation board 68, thus prevented high voltage leakage and make it possible to butterfly gate mechanism 20 arrange as close as possible intermediate storage container 26.
Therefore, on the whole, can easily make electrostatic spraying device 10 compact, and therefore can be installed in compactly on the robotic arm 60, thereby make the electrostatic spraying treatment effeciency very high.
The cylindrical chamber 26a and the bar 28a of intermediate storage container 26 are made by insulating resin.Therefore, intermediate storage container 26 has kept good insulating properties on the whole.
Insulating lid 70 is fastened on the base 64 by screw removably with respect to 20 one-tenth covering relation ground of cylindrical chamber 26a and butterfly gate mechanism.Like this, the insulating properties of intermediate storage container 26 further are improved.Because insulating lid 70 is dismountable from butterfly gate mechanism 20 1 sides (that is, upwards), therefore effectively improved maintenance, for example to its maintenance to butterfly gate mechanism 20.
Utilization is according to the method for enforcement electrostatic spraying of the present invention, when the conductive coating material of scheduled volume by feed path when the sprayed on material source has been fed to container, stop from sprayed on material source supply conductive coating material, and the conductive coating material that will remain in the unit that insulate at least is supplied to this container.When the insulation unit is cleaned, there is not conductive coating material to remain in the insulation unit, as much as possible prevented from unnecessarily to emit untapped conductive coating material.Therefore, can realize economy and electrostatic spraying efficiently processing reliably.
In spray treatment, when with the sprayed on material in the intermediate storage container when squit hole is supplied to spray gun, the air that remains in the top of intermediate storage mechanism can not be incorporated into the spray gun from squit hole.Therefore, utilize simple the processing and device, prevented that reliably air from mixing mutually with the sprayed on material that is fed to spray gun from middle reservoir vessel, thereby easily realized high-quality electrostatic spraying processing.
Utilization is according to the equipment that is used to implement electrostatic spraying of the present invention, in cleaning treatment or spray treatment at least, the squit hole of intermediate storage mechanism is arranged in the below of its hand-hole.Therefore, in cleaning treatment, the cleaning fluid that remains in intermediate storage container bottom is emitted reliably by squit hole.Be supplied to the new sprayed on material of intermediate storage container can not mix, thereby reduced the sprayed on material amount of being drained effectively, thereby and realized that easily high-quality electrostatic spraying handles with cleaning fluid.
And, utilization is according to the equipment that is used to implement electrostatic spraying of the present invention, owing between intermediate storage mechanism and insulating mechanism, be inserted with insulation board, therefore provide sufficient surface distance along insulation board, thereby prevented high voltage leakage and made insulating mechanism can be positioned to as close as possible intermediate storage mechanism.Therefore, can be on the whole the equipment making that is used to implement electrostatic spraying is got very compact, and it can be installed in well on the robot apparatus etc., it be simple efficient to make electrostatic spraying handle.
Claims (5)
1. method of utilizing electrostatic spraying device (10) to implement electrostatic spraying, this equipment is in the feed path (18a is to 18c) that is used for conductive coating material is fed to from sprayed on material source (16a is to 16c) spray gun (40), the insulation unit (20) that comprises intermediate storage container (26) and be used to make described sprayed on material source (16a is to 16c) and described intermediate storage container (26) to be electrically insulated from each other, this method comprises the steps:
By described feed path (18a is to 18c) described conductive coating material is fed to described intermediate storage container (26) from described sprayed on material source (16a is to 16c);
Stop to supply described conductive coating material, and the described conductive coating material that will remain in the described at least insulation unit (20) is fed in the described intermediate storage container (26) from described sprayed on material source (16a is to 16c); And,
Clean described insulation unit (20), described sprayed on material source (16a is to 16c) and described intermediate storage container (26) are electrically insulated from each other, and the described conductive coating material in the described intermediate storage container (26) is supplied to described spray gun (40), to implement electrostatic spraying.
2. method according to claim 1, wherein, in the time will using the conductive coating material of same color, described conductive coating material in the described intermediate storage container (26) is supplied to described spray gun (40), with the enforcement electrostatic spraying, and make the described conductive coating material that remains in the described intermediate storage container (26) temporarily turn back to described insulation unit (20) afterwards.
3. a method of implementing electrostatic spraying comprises the steps:
With the hand-hole (32) of sprayed on material, be fed to the described intermediate storage mechanism (26) from sprayed on material source (16a is to 16c) by intermediate storage mechanism (26);
Clean insulation unit (20), described insulation unit is used to make described sprayed on material source (16a is to 16c) and described intermediate storage mechanism (26) to be electrically insulated from each other; And
By being supplied to spray gun (40) to implement electrostatic spraying via the squit hole (34) of described intermediate storage mechanism (26) the described sprayed on material in the described intermediate storage mechanism (26), described sprayed on material source of supply (16a is to 16c) and described intermediate storage mechanism (26) are electrically insulated from each other simultaneously;
Wherein spray in the step at described cleaning step or described enforcement at least, described hand-hole (32) is arranged in the top of described squit hole (34).
4. electrostatic spraying device (10) that is arranged between sprayed on material source of supply at least or cleaning fluid source of supply (12) and the spray gun (40), it comprises:
Intermediate storage mechanism (26), it has cylindrical chamber (26a);
The piston that can move back and forth (28), it is set in the described cylindrical chamber (26a);
Hand-hole (32), opening are in the cylindrical cavity (30) that described piston (28) can slide therein, and described hand-hole (32) links to each other with described source of supply (12); With
Squit hole (34), opening are in the described cylindrical cavity (30) that described piston (28) can slide therein, and described squit hole (34) links to each other with described spray gun (40);
Insulation unit (20) is arranged between described source of supply (12) and the described hand-hole (32), wherein said insulation unit (20) have insulation tube (18b) and a pair of directional control valve (22a, 22b).
5. electrostatic spraying device according to claim 4 (10), wherein said cylindrical chamber (26a) is installed on the displaceable member of electrostatic spraying device (10), when described displaceable member (78) was in the attitude of basic horizontal, described hand-hole (32) was positioned at the top of described squit hole (34).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP074453/2003 | 2003-03-18 | ||
| JP2003074454A JP3984920B2 (en) | 2003-03-18 | 2003-03-18 | Electrostatic coating equipment |
| JP074454/2003 | 2003-03-18 | ||
| JP074448/2003 | 2003-03-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1761529A CN1761529A (en) | 2006-04-19 |
| CN100400175C true CN100400175C (en) | 2008-07-09 |
Family
ID=33290082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800071798A Expired - Lifetime CN100400175C (en) | 2003-03-18 | 2004-03-18 | Method and device for electrostatic coating |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3984920B2 (en) |
| CN (1) | CN100400175C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103301969A (en) * | 2012-03-05 | 2013-09-18 | 本田技研工业株式会社 | Intermediate storage device of electrostatic coating system , method for cleaning the same, and method for coating |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4755605B2 (en) * | 2007-01-12 | 2011-08-24 | 本田技研工業株式会社 | Electrostatic coating equipment |
| CN105170357B (en) * | 2009-07-30 | 2017-12-08 | 本田技研工业株式会社 | The attachment means of fluid flowing path |
| CN115007342B (en) * | 2022-06-14 | 2023-05-05 | 天津铭捷智能装备有限公司 | Intermittent paint supply oil cylinder device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0487755U (en) * | 1990-11-30 | 1992-07-30 | ||
| JPH0657444U (en) * | 1993-01-21 | 1994-08-09 | トリニティ工業株式会社 | Electrostatic coating equipment for conductive paint |
| US5863352A (en) * | 1996-05-30 | 1999-01-26 | Isono International | Method for cleaning painting apparatus |
| US6037010A (en) * | 1997-07-03 | 2000-03-14 | Lactec Gesellschaft Fuer Moderne Lackiertechnik Mbh | Paint spraying equipment and method of cleaning the same |
| US20030041884A1 (en) * | 2001-08-17 | 2003-03-06 | Thomas Bahr | Method and apparatus mounted on a painting system to clean a paint feedline |
-
2003
- 2003-03-18 JP JP2003074454A patent/JP3984920B2/en not_active Expired - Lifetime
-
2004
- 2004-03-18 CN CNB2004800071798A patent/CN100400175C/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0487755U (en) * | 1990-11-30 | 1992-07-30 | ||
| JPH0657444U (en) * | 1993-01-21 | 1994-08-09 | トリニティ工業株式会社 | Electrostatic coating equipment for conductive paint |
| US5863352A (en) * | 1996-05-30 | 1999-01-26 | Isono International | Method for cleaning painting apparatus |
| US6037010A (en) * | 1997-07-03 | 2000-03-14 | Lactec Gesellschaft Fuer Moderne Lackiertechnik Mbh | Paint spraying equipment and method of cleaning the same |
| US20030041884A1 (en) * | 2001-08-17 | 2003-03-06 | Thomas Bahr | Method and apparatus mounted on a painting system to clean a paint feedline |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103301969A (en) * | 2012-03-05 | 2013-09-18 | 本田技研工业株式会社 | Intermediate storage device of electrostatic coating system , method for cleaning the same, and method for coating |
| US9126240B2 (en) | 2012-03-05 | 2015-09-08 | Honda Motor Co., Ltd. | Intermediate storage device of electrostatic coating system , method for cleaning the same, and method for coating |
| CN103301969B (en) * | 2012-03-05 | 2016-06-29 | 本田技研工业株式会社 | The middle accumulation device of electrostatic coating system, its cleaning method and spraying method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3984920B2 (en) | 2007-10-03 |
| JP2004275978A (en) | 2004-10-07 |
| CN1761529A (en) | 2006-04-19 |
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