CN100443193C - Powder film spraying machine - Google Patents
Powder film spraying machine Download PDFInfo
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- CN100443193C CN100443193C CNB2004100677371A CN200410067737A CN100443193C CN 100443193 C CN100443193 C CN 100443193C CN B2004100677371 A CNB2004100677371 A CN B2004100677371A CN 200410067737 A CN200410067737 A CN 200410067737A CN 100443193 C CN100443193 C CN 100443193C
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Abstract
The present invention discloses a powder film spraying (coating) machine which is composed of a high-pressure electrostatic spraying gun, a controller and a powder supplying cylinder. The present invention is characterized in that the electrostatic spraying gun in the powder film spraying (coating) machine uses a built-in high voltage generator, and a U-shaped iron core frame in a transformer of the high voltage generator is poured by using 5010A/5010B epoxy resin material. The controlling circuit of an electrostatic controller uses automatic distance-current-voltage control, maximum emission current is preset, and the best powder electric charge quantity is guaranteed. After the distance between the spraying gun and a work piece is close to the set maximum emission current, the distance between the spraying gun and the work piece is further close, and the output high voltage and the emission current automatically and gradually reduce, or else, the output high voltage and the emission current are gradually increased, and the reversibility can be completely obtained. In the moment of the short circuit of the spraying gun and the work piece, the output is reduced to the minimum, and the high voltage output automatically recovers after breakage. The fire striking phenomenon is eliminated.
Description
Technical field
The present invention relates to a kind of surface treating appliance, the various metal shells of wide spectrums such as the various machineries that use in particularly a kind of human lives and the activity in production, instrument, instrument and equipment, electrical equipment, metallic conduit, boats and ships, vehicle, Aeronautics and Astronautics and a kind of novel electrostatic powder film spraying machine that structure is carried out anticorrosion surface treatment and surface protection.
Background technology
The electrostatic powder Membrane jetter generally is made of high-pressure electrostatic spray gun, controller, confession powder tube.Past electrostatic powder Membrane jetter adopts external high pressure generator, and equipment volume is too huge, and spraying effect is poor, and security performance is low.In recent years, some had the retaining of enterprise in order to improve product of certain scale, and were more and more higher to the requirement of external coating, adopted the electrostatic powder Membrane jetter of the built-in high pressure generator of import one after another; Some domestic electrostatic coating equipment manufacturing enterprises are also at the built-in electrostatic gun of exploitation, but effect is all undesirable.Because the key technology of built-in high pressure generator electrostatic gun is the embedding of pulsed high-voltage transformer and multiplication of voltage piece.Pulsed high-voltage transformer, the domestic manufacturer of the overwhelming majority all adopts ferrite bar, single-ended input mode.This pulsed high-voltage generator, efficient is low, and carrying load ability is low, easily heating.In addition, aspect environmental protection and to being remained in part hidden danger by spray product (workpiece) quality aspect, as: " flange younger brother " shielding, powder utilization is low, the Powder Recovery rate is low, coating is uneven, " tangerine peel ", the difficulty of respraying and percent defective height, easily produce " sparking " congruence of feeling unwell and wait these to be difficult to the thoroughly problem of elimination, this has influenced the inherent quality and the appearance of product (workpiece) for not reached requirement far away by the surface treatment of spray workpiece (product) and protection quality.
Summary of the invention
In order to overcome the deficiency in the existing coating equipment, improve the important component-powder film spraying machine in the coating equipment (production line), become the coating equipment manufacturing industry, for adapting to strict environmental requirement, improving by important topic of the surface treatment of spray workpiece (product) and protection quality.Powder film spraying machine provided by the invention can not only be eliminated " flange shielding " effect and " sparking " phenomenon, can also improve the deposition effect of powder greatly, improve the powder utilization rate, reduce the aerial pollution of powder, simultaneously, solved " tangerine peel " situation former by spray gun thereby that produce.
The technical solution adopted for the present invention to solve the technical problems is: the electrostatic gun in the powder film spraying machine adopts built-in high pressure generator, and adopts the 5010A/5010B epoxide resin material to record U sections core framework in the transformer of high pressure generator; The electrostatic controller control circuit adopts " distance-current-voltage " control automatically, preestablish maximum emission current, guarantee best powder charge, when spray gun and workpiece distance near after reaching the maximum emission current of setting, if spray gun and workpiece distance are further approaching, output high pressure and emission current then reduce automatically gradually, otherwise, then export high pressure and emission current increases gradually, completely reversibility; The moment of spray gun and workpiece short circuit, minimum is reduced in output, recovers high pressure output after the disconnection again automatically, eliminates " sparking " phenomenon.Adopt the powder film spraying machine of this programme formation, can not only improve the deposition effect of powder, save powder more than 25%, improved the powder utilization rate, also reduced aerial diffusion of powder and pollution, help environmental protection.No matter simultaneously, eliminated " flange cage " effect and " anti-ionization " phenomenon, solved " tangerine peel " situation former by spray gun thereby that produce, be flat part, dark chamber part, or " respraying " all has superior spray film quality.
Description of drawings
Fig. 1 is a structured flowchart of the present invention.
Fig. 2 is for being practical structures schematic diagram of the present invention.
Fig. 3 is for being the circuit diagram of controller of the present invention.
The specific embodiment
In conjunction with Fig. 1, Fig. 2, Fig. 3, powder film spraying machine of the present invention is made up of three parts: high-pressure electrostatic spray gun, controller, confession powder tube.One, high-pressure electrostatic spray gun: built-in high pressure generator, the transformer U sections core framework Embedding Material in the high pressure generator be chosen as high insulating property, low-gravity, high resilience, transparent 5010A/5010B epoxide resin material.Its input voltage 5-12V, electric current 0.5A, 12KHz square wave; Output voltage 40-80KV, negative polarity.Two, controller: 1, electrostatic high-pressure control circuit, output voltage 5-12V, electric current 0.5A, the 12KHz square wave has " distance-current-voltage " automatic control circuit, can preestablish the maximum emission current of spray gun, guarantees best powder charge.Be easy to penetrate " Faraday shield cage ", eliminate " anti-ionization " phenomenon, thoroughly solve spark phenomenon, significantly reduce the generation of tangerine peel, guarantee surperficial coating quality.2, pneumatic control comprises: the open and close of control magnetic valve.By gas circuit distributor, pressure-reducing valve, air gauge, regulate the size of concentration gas (once gas), atomization gas (secondary gas), three gas.Concentration gas and atomization gas control powder outlet quantity and flow velocity evenly nebulize the powder of ejection continuously.Three times gas is used to cool off multiplication of voltage piece, cleaner discharge pin.Three, for the powder tube: form by venturi pump, fluidisation plate, powder tube etc.Powdery paints enters electrostatic gun by powder feeder by duff pipe, and gun head is equipped with the metal discharge pin, and built-in high pressure generator is subjected to the excitation of controller, produces the 40-80KV negative high voltage, produces intensive negative electrical charge around spray point.When powder sprayed from electrostatic dusting rifle head, catching electric charge became charged powder, under the effect of air-flow and electric field force, flies to the ground connection workpiece, and is adsorbed on its surface, formed solid-state filming after solidifying (plasticizing).
The construction technology of high pressure electrostatic painting is most important to the influence of powder film forming, so use the present invention should select corresponding technological parameter according to different workpiece when spraying workpiece.For example: workpiece has flat part, deep trouth profile piece, part etc. fills spray; Technological parameter has spray voltage, supplies powder air pressure, powder outlet quantity, spray distance etc.
1. spray voltage:
A. within the specific limits, spray voltage increases, and the powder adhesion amount increases.But when voltage surpassed 90KV, the powder adhesion amount reduced with the increase of voltage on the contrary.
B. voltage increases, and the initial growth rate of bisque increases, but along with the increase of spray time,
Voltage diminishes to the influence of powder layer thickness increment rate
C. when increasing, voltage diminishes to the influence of powder layer thickness when spray distance (referring to lance head and surface of the work distance), and general distance should be grasped between 150-300mm.
D. the too high meeting of spray voltage punctures powder coating, influences coating quality, and spray voltage should be controlled between the 50-70KV.
2. for powder air pressure:
Supply powder air pressure to refer to the air pressure of duff pipe in the powder feeder, under the constant situation of other spraying condition, when supplying powder air pressure suitable, powder is adsorbed in surface of the work deposition maximum.
3. the amount of dusting
The initial growth rate of powder layer thickness is directly proportional with the amount of dusting, but along with spray time increases, the amount of dusting not only tails off to the influence of the growth rate of powder layer thickness, and deposition efficiency is descended.
The amount of dusting is meant the powder outlet quantity of spray gun in the unit interval, and in the general spraying application, the amount of dusting is grasped at 100-200g/min, and is comparatively suitable.
4. spray distance
Spray distance is meant the distance of gun slot to surface of the work.The electrostatic potential that applies when spray gun is constant, and when spray distance changes, electric-field intensity also will change thereupon.Therefore, the spray distance size directly influences the powder layer thickness and the deposition efficiency of workpiece absorption.
Claims (2)
1, a kind of powder film spraying machine, constitute by high-pressure electrostatic spray gun, controller, confession powder tube, it is characterized in that: the electrostatic gun in the powder film spraying machine adopts built-in high pressure generator, and adopts the 5010A/5010B epoxide resin material to record U sections core framework in the transformer of high pressure generator; The electrostatic controller control circuit adopts " distance-current-voltage " control automatically, preestablish maximum emission current, guarantee best powder charge, when spray gun and workpiece distance near after reaching the maximum emission current of setting, if spray gun and workpiece distance are further approaching, output high pressure and emission current then reduce automatically gradually, otherwise, then export high pressure and emission current increases gradually, completely reversibility; The moment of spray gun and workpiece short circuit, minimum is reduced in output, recovers high pressure output after the disconnection again automatically, eliminates " sparking " phenomenon.
2, according to the said powder film spraying machine of claim 1, the input voltage that it is characterized in that described electrostatic gun is 5-12V, electric current 0.5A, 12KHz square wave; Output voltage 40-80KV, negative polarity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100677371A CN100443193C (en) | 2004-10-30 | 2004-10-30 | Powder film spraying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100677371A CN100443193C (en) | 2004-10-30 | 2004-10-30 | Powder film spraying machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1768967A CN1768967A (en) | 2006-05-10 |
| CN100443193C true CN100443193C (en) | 2008-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100677371A Active CN100443193C (en) | 2004-10-30 | 2004-10-30 | Powder film spraying machine |
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| CN (1) | CN100443193C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105728218A (en) * | 2016-04-21 | 2016-07-06 | 张峰 | Electrostatic coating device of locomotive-mounted wheel rail friction control material |
| CN105741958A (en) * | 2016-04-28 | 2016-07-06 | 山东科虹线缆科技股份有限公司 | Nanographene low-voltage power cable and manufacturing method thereof |
| CN108714496B (en) * | 2018-06-11 | 2021-01-15 | 佛山市优正涂装科技有限公司 | Method for controlling spraying of grooved products of electrostatic powder spray gun system |
| CN109453910B (en) * | 2018-11-26 | 2020-12-01 | 青岛中邦科技发展有限公司 | Voltage control method and system for electrostatic spraying spray gun |
| CN109433441A (en) * | 2018-11-30 | 2019-03-08 | 青岛中邦科技发展有限公司 | A kind of Multifunctional static electricity spray painting control method and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4462061A (en) * | 1983-06-29 | 1984-07-24 | Graco Inc. | Air turbine drive for electrostatic spray gun |
| CN2319132Y (en) * | 1997-06-03 | 1999-05-19 | 太仓市静电设备厂 | High voltage built-in electrostatic powder sprayer |
-
2004
- 2004-10-30 CN CNB2004100677371A patent/CN100443193C/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4462061A (en) * | 1983-06-29 | 1984-07-24 | Graco Inc. | Air turbine drive for electrostatic spray gun |
| CN2319132Y (en) * | 1997-06-03 | 1999-05-19 | 太仓市静电设备厂 | High voltage built-in electrostatic powder sprayer |
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| Publication number | Publication date |
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| CN1768967A (en) | 2006-05-10 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Powder coating machine Effective date of registration: 20210629 Granted publication date: 20081217 Pledgee: Zhejiang Deqing Rural Commercial Bank Co.,Ltd. science and technology sub branch Pledgor: ZHEJIANG MINGQUAN INDUSTRIAL COATING Co.,Ltd. Registration number: Y2021330000703 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |