CN108707953A - A kind of magnetic field type double anode cathode electro-coating equipment - Google Patents
A kind of magnetic field type double anode cathode electro-coating equipment Download PDFInfo
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- CN108707953A CN108707953A CN201810689389.3A CN201810689389A CN108707953A CN 108707953 A CN108707953 A CN 108707953A CN 201810689389 A CN201810689389 A CN 201810689389A CN 108707953 A CN108707953 A CN 108707953A
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- magnetic field
- cathode
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- charged particle
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/22—Servicing or operating apparatus or multistep processes
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- C25D5/006—
Abstract
The present invention relates to coating equipment fields, more particularly to one kind generating Lorentz force effect by magnetic field to charged particle, and then dramatically improve the magnetic field type double anode cathode electro-coating equipment of cathode material surface coating uniformity to be processed and compactness, including electrophoresis tank, cathode construction, the conveying device coordinated with cathode construction and two anode constructions being oppositely arranged in electrophoresis tank, electrophoresis trench bottom is equipped with magnetic field generating means.
Description
Technical field
The present invention relates to coating equipment fields, more particularly to one kind generating Lorentz masterpiece to charged particle by magnetic field
With, and then dramatically improve cathode material surface coating uniformity to be processed and the magnetic field type double anode cathode electricity of compactness
Electrophoresis painting dressing equipment.
Background technology
Electrophoretic painting is a kind of special coating film-forming methods, and it is special to be only applicable to the electrophoretic painting different from general coating
Water paint, in the field of coating of auto parts machinery using particularly extensively.It is to be immersed in conductive coated article
It fills and is separately arranged corresponding thereto as anode or cathode, in slot in water-reducible, the lower electrophoretic coating slot of concentration ratio
Cathode or anode lead to direct current in two interpolars, a kind of coating process of uniform, water-insoluble film are precipitated on coated article.Root
According to the polarity of coated article and the type of electrophoretic coating, electrophoretic deposition can be divided into anode electro-coating and cathode electro-coating,
The coated article of middle cathode electro-coating is cathode, and used electrophoretic coating is cationic.
And electrophoretic painting generally requires to use electrophoresis equipment, electrophoresis equipment can be divided into cathode according to the polarity of workpiece to be processed
And anode, separately it can be further divided into single anode and double anode electrophoresis according to the demand of workpiece to be processed in cathode electro-coating equipment,
Equipment, that is, cathode electro-coating equipment needed for cathode electro-coating, has generally included main electrophoresis tank, cathode construction
And anode construction, and play the auxiliary filter device of sexual function, heat-exchange device, the polar night circulatory system, direct current pulse power source,
Displacement slot/spareslots, paint booth, cleaning equipment and ultrafiltration retracting device are worked with adapting to different electrophoretic paintings.
But used double anode cathode electro-coating equipment is when electrophoretic painting is processed on the market at present, due to electrification
After the electrophoresis direction of particle is pointing directly at cathode by anode, therefore electrophoresis largely reaches the two sides towards anode of workpiece to be processed
Deposition, generated electrophoretic deposition effect is poor in some smaller gaps to be processed, only in workpiece to be processed just towards sun
The face of pole two generates preferably electrophoretic deposition effect, and coating is thicker, and it is heavy to produce workpiece to be processed entirety work surface electrophoresis
Accumulate the poor problem of the uniformity of coating.
Patent Office of the People's Republic of China discloses a kind of patent of invention of integrated horizontal gel electrophoresis apparatus on April 25th, 2012 and awards
Power, Authorization Notice No. CN102423633A, the device mainly consist of the following parts：The horizontal electrophoresis apparatus being molded into should band
There are one the gel slots between anode slot and cathode can；First internal groove side wall of the device separates anode slot and gel slot
It opens, there is one can break disconnected fragile part on the internal groove side wall, another internal groove side wall of the device separates cathode can and gel slot,
Also one can breaks disconnected fragile part on the internal groove side wall；The electrophoretic buffer being stored in anode slot and cathode can；In gel
Pre-prepared colloid in slot, bottom edge are directly in contact with the inside bottom of electrophoresis groove mould；By gel slot, anode slot and cathode can group
It is combined the integrated electrophoretic apparatus for just constituting instant.Which simplify the processing procedure of electrophoresis and operating procedures, improve
Working efficiency, reduces cost, and avoids equipment cleaning and safeguard the time of consumption.But do not have on improving processing effect
It gets a promotion.
Patent Office of the People's Republic of China also disclosed a kind of invention patent mandate of electrophoretic coating device on July 18th, 2012, authorized
Notification number is CN102586840A, provides a kind of attachment that can be by inhibition foreign matter to next vehicle or the vehicle at rear,
To improve multiple vehicles are continually fed into electrophoresis tank and are carried out the productive electrophoretic coating device and electrophoresis of electrophoresis engineering
Coating process.Vehicle is immersed in the electrophoresis liquid for riddling electrophoresis tank by the electrophoretic coating device, can make the vehicle on one side
It is transported in the electrophoresis tank and to carry out electrophoretic painting on one side, the electrophoretic coating device includes that can be stirred in the electrophoresis tank
The agitating device of the electrophoresis liquid is mixed, the agitating device includes at least：For the vehicle, can towards with the coated article
The opposite direction of carriage direction, the right side circulatory system of the electrophoresis liquid is sprayed with mutually different output and left side is followed
Loop system.It improves the uniformity of each side surface application of coated article to a certain extent really, but its device is excessively huge multiple
It is miscellaneous, it can not be transformed in existing cathode electro-coating equipment, need deploying new equipment, cost is higher, and it uses difference
The mode of electrophoretic painting is carried out to improve the uniformity of side application to left and right sides, is still difficult to ensure stable height uniformly
Property application, and improvement can not be made to the compactness of coating.
Invention content
To solve double anode cathode electro-coating equipment employed in the prior art when electrophoretic painting is processed, due to electrification
After the electrophoresis direction of particle is pointing directly at cathode by anode, therefore electrophoresis largely reaches the two sides towards anode of workpiece to be processed
Deposition, generated electrophoretic deposition effect is poor in some smaller gaps to be processed, only in workpiece to be processed just towards sun
The face of pole two generates preferably electrophoretic deposition effect, and coating is thicker, and it is heavy to produce workpiece to be processed entirety work surface electrophoresis
The poor problem of the uniformity of coating is accumulated, the present invention provides one kind generating Lorentz force effect by magnetic field to charged particle,
And then dramatically improve cathode material surface coating uniformity to be processed and the magnetic field type double anode ability cathode electrophoresis of compactness
Coating equipment.
To achieve the above object, the present invention uses following technical scheme：
A kind of magnetic field type double anode cathode electro-coating equipment, including electrophoresis tank, cathode construction, the conveying with cathode construction cooperation
Device and two anode constructions being oppositely arranged in electrophoresis tank, electrophoresis trench bottom are equipped with magnetic field generating means.
The electric field that cathode and anode generate in the magnetic field generated using magnetic field generating means and electrophoresis tank interacts so that
Moved from anode and do complex curve to the charged particle of cathode and move, first only under magnetic fields when, the electrification of uniform motion
Particle makees uniform circular motion, and moving radius depends primarily on the movement velocity of magnetic induction intensity and charged particle, and in electric field
When in the electromagnetic field of magnetic field superposition, charged particle can do more complicated curvilinear motion, and the Lorentz force F generated is by charging
Quantity of electric charge q, electric field strength E, the speed v of charged particle and the magnetic induction density B of particle determine that formula is：F≡q(E+v×
B), wherein qE is electric field force item, and qvB is magnetic field force item, and the integral formula form of the formula is：F=∫ V (pE+J × B) dr,
Middle V is the volume of integral, and p is charge density, and E is electric field strength, and J is current density, and B is magnetic induction intensity, and dr is microbody
The motion path of charged particle can be better anticipated according to integral formula for element, therefore in device provided by the present invention,
Borrow integral formula calculate, in conjunction with workpiece to be processed face present position to be processed come set magnetic induction intensity, electric field strength with
And current density etc. respectively thinks controlled data, it is ensured that charged particle can uniform deposition in the face to be processed of workpiece to be processed
On, magnetic field generating means of the present invention can connect the mechanism for finely tuning its angle in addition, such as tilt adjustments platform, angle and displacement tune
Flatten platform and angle vertical adjustment mechanism etc. so that at the beginning of the magnetic induction intensity direction of magnetic field generating means generation and charged particle
The beginning direction of motion existsθ differential seat angles, since the presence of the differential seat angle makes charged particle do with certain rule
Periodic screw, in conjunction with can further derive following three formula in above formula：Wherein R is
The radius of spin, m are charged particle mass, and v is charged particle linear velocity, and θ is that magnetic induction intensity direction is initially transported with charged particle
The included angle in dynamic direction, B is magnetic induction intensity, and q is the quantity of electric charge of charged particle；Wherein T is screw week
Phase, π are pis, and m is charged particle mass, and B is magnetic induction intensity, and q is the quantity of electric charge of charged particle；Its
Middle h is screw pitch, and π is pi, and m is charged particle mass, and v is charged particle linear velocity, and θ is magnetic induction intensity direction and electrification
The included angle in particle initial motion direction, B are magnetic induction intensity, and q is the quantity of electric charge of charged particle；
If by above formula it can be seen that when without the structure that magnetic field generating means are carried out with angle adjustment, the value of screw pitch h is 0,
The screw for expanding the radius of spin in plane layer is done when i.e. charged particle is not obstructed, and is shot during screw to the moon
Pole workpiece to be processed surface.
It, can be real according to the face present position to be processed setup parameter of above formula combination anode and cathode spacing and workpiece to be processed
Highly stable uniform electrophoretic painting on the face to be processed of present workpiece to be processed.
Preferably, the magnetic field generating means generate magnetic field by permanent magnet.
Permanent magnet generate magnetic field by stable homogeneous and can keep constant longer very much and low cost advantage, but
The shortcomings that in the presence of being difficult to adjust.
Preferably, the magnetic field generating means generate magnetic field by conductive coil.
The magnetic field that conductive coil generates advanced optimizes on the magnetic field that permanent magnet generates, and not only has generation magnetic field equal
One stablizes and the advantages of can keep constant longer very much, also there is magnetic field to facilitate adjustable, be easy to control, and then adapt to all kinds of
It is processed with the electrophoretic painting of each condition workpiece to be processed.
Preferably, the conductive coil connection adjustable DC pulse power or constant adjustable DC power supply.
The adjustable DC pulse power generates fluctuation magnetic field, suitably control magnetic field fluctuation range may make only need it is primary
The electrophoretic painting processing to complicated workpiece to be processed can be completed in setting, and complicated electrophoresis can be used in the adjustable DC pulse power
The deposition of different charged particles is, it can be achieved that single electrophoretic painting processing prepares the effect of laminated coating in system, and constant adjustable
DC power supply then can be used for rapid processing, have higher processing efficiency, coating compactness compared to the adjustable DC pulse power
It also will be slightly above preposition.
Preferably, it is characterized in that, the cathode construction be equipped with the first steering mechanism and the second steering mechanism, first turn
It is fixedly connected with clamping part to device front end.
Clamping part is being clamped workpiece to be processed, or the auxiliary work-piece that clamping is stably connected with workpiece to be processed, cylindrical
The first steering mechanism can be rotated when workpiece to be processed can not be completely infused in electrophoresis liquid so that waiting for along its axis rotation
Workpieces processing each section, which can periodically be immersed in progress electrophoretic painting processing, the second steering mechanism in electrophoresis liquid, can make to wait for
Workpieces processing rotates on the rake angle of vertical plane so that some special-shaped workpieces to be processed can tune to suitable electrophoretic painting and add
Work angle, and the convenience of workpiece to be processed installation can be improved to a certain extent.
Preferably, it is characterized in that, the conveying device realizes the fortune to cathode construction using two-orbit transport track
It is defeated.
Two-orbit transport track has high conveying stability and mounting stability, improves workpiece to be processed and adds in transport
It is unlikely to deviate during work, in order to avoid have an adverse effect to electrophoretic painting processing effect.
The beneficial effects of the invention are as follows：
1) it is acted on by Lorentz force so that charged particle can uniformly electrophoresis be realized to each face of workpiece to be processed to work to be processed
Process to part outer surface high homogeneity；
2) Lorentz force makes charged particle generate spiral acceleration effect, improves the compactness of coating；
3) different electrical power can be selected and connects conductive coil, generate different electrophoretic painting effects, it is convenient controllable；
4) the first steering mechanism and the second steering mechanism of cathode can further electrophoretic painting processing uniformity and may make one
A little abnormity workpieces to be processed can tune to suitable electrophoretic painting machining angle, and workpiece to be processed can be improved to a certain extent
The convenience of installation.
Description of the drawings
Fig. 1 is the schematic diagram of the present invention；
Fig. 2 is the schematic diagram in magnetic field produced by magnetic field generating means of the present invention；
Fig. 3 is charged particle mobile route figure when common double anode cathode electro-coating equipment electrophoretic painting is processed；
Fig. 4 is generated one of which charged particle mobile route schematic diagram when present device electrophoretic painting is processed；
In figure, 1 electrophoresis tank, 101 magnetic field generating means, 2 anode constructions, 201 anode posts, 3 cathode constructions, 301 clamping parts, 302
First steering mechanism, 303 second steering mechanism, 4 workpieces to be processed, 401 processing coatings, 5 conveying devices.
Specific implementation mode
Further clear detailed description explanation is made to the present invention below in conjunction with Figure of description and specific embodiment.
Embodiment 1
A kind of magnetic field type double anode cathode electro-coating equipment as shown in Figure 1, including electrophoresis tank 1, cathode construction and cathode knot
The two-orbit transport shoe formula of structure cooperation conveying device 5 and two anode constructions 32 being oppositely arranged in electrophoresis tank 1, and common
Routinely be equipped in cathode electro-coating equipment play the auxiliary filter device of sexual function, heat-exchange device, the polar night circulatory system,
Direct current pulse power source, displacement slot/spareslots, paint booth, cleaning equipment and ultrafiltration retracting device, cathode construction are equipped with first and turn to
Mechanism 302 and the second steering mechanism 303,302 front end of the first steering mechanism are fixedly connected with clamping part 301, and 1 bottom of electrophoresis tank is set
There are magnetic field generating means 101,101 bottom of magnetic field generating means to be equipped with.
The magnetic field that magnetic field generating means 101 are generated by ferrite permanent-magnet iron.
Magnetic field caused by magnetic field generating means 101 is as shown in Figure 2 and B dotted lines direction is upward along figure, generated magnetic
Induction is 0.55T.Pass through three formula of data above combination charged particle screw：Wherein R is
The radius of spin, m are charged particle mass, and v is charged particle linear velocity, and θ is that magnetic induction intensity direction is initially transported with charged particle
The included angle in dynamic direction, B is magnetic induction intensity, and q is the quantity of electric charge of charged particle；Wherein T is screw week
Phase, π are pis, and m is charged particle mass, and B is magnetic induction intensity, and q is the quantity of electric charge of charged particle；Its
Middle h is screw pitch, and π is pi, and m is charged particle mass, and v is charged particle linear velocity, and θ is magnetic induction intensity direction and electrification
The included angle in particle initial motion direction, B are magnetic induction intensity, and q is the quantity of electric charge of charged particle；It substitutes into againIt is public
Formula, wherein q are the quantities of electric charge of charged particle, and E is electric field strength, and L is working position needed for anode posts 201 to workpiece to be processed 4
Distance, m is charged particle mass.
And then three formula are improved, obtain three new formula：Wherein R is the radius of spin, E
It is electric field strength, L is the distance of working position needed for anode posts 201 to workpiece to be processed 4, and θ is magnetic induction intensity direction and band
The included angle in charged particle initial motion direction, B are magnetic induction intensity,；Wherein T is the screw period, and π is round
Frequency, m are charged particle mass, and B is magnetic induction intensity, and q is the quantity of electric charge of charged particle；Wherein h is spiral shell
Away from π is pi, and E is electric field strength, and L is the distance of working position needed for anode posts 201 to workpiece to be processed 4, and θ is magnetic strength
It is magnetic induction intensity to answer the included angle in intensity direction and charged particle initial motion direction, B.
Substitute into given data, then measure anode posts 201 to working position needed for workpiece to be processed 4 distance and it is required plus
Ministry of worker's distance of the position away from the projection of its 201 bottom end of anode posts, is set as radius of spin R by its distance, is being not provided with angle regulator
In the case of h be 0, can then start electrophoretic painting process.Only it need to ensure workpiece to be processed 4 during batch machining
Installation site keeps relative stability, and keeps each parameter stability that quick and high quality electrophoretic painting processing, wherein band can be realized
Charged particle motion path forms high uniformity and cause similar to shown in the A2 dotted lines in Fig. 4 in 4 surface of workpiece to be processed and gap
Close electrophoresis processes coating 401.Replacing workpiece to be processed 4 only needs to carry out simple computation again, and electric field strength is adjusted i.e.
It can.
Embodiment 2
A kind of magnetic field type double anode cathode electro-coating equipment as shown in Figure 1, including electrophoresis tank 1, cathode construction and cathode knot
The two-orbit transport shoe formula of structure cooperation conveying device 5 and two anode constructions 32 being oppositely arranged in electrophoresis tank 1, and common
Routinely be equipped in cathode electro-coating equipment play the auxiliary filter device of sexual function, heat-exchange device, the polar night circulatory system,
Direct current pulse power source, displacement slot/spareslots, paint booth, cleaning equipment and ultrafiltration retracting device, cathode construction are equipped with first and turn to
Mechanism 302 and the second steering mechanism 303,302 front end of the first steering mechanism are fixedly connected with clamping part 301, and 1 bottom of electrophoresis tank is set
There is tilt adjustments platform of the magnetic field generating means 101 for finely tuning its angle.
Magnetic field generating means 101 connect the magnetic field that the adjustable DC pulse power generates by conductive coil.
Magnetic field caused by magnetic field generating means 101 is as shown in Figure 2 and B dotted lines direction is upward along figure, generated magnetic
Induction is 0.05~1.1T.Pass through three formula of data above combination charged particle screw：Its
Middle R is the radius of spin, and m is charged particle mass, and v is charged particle linear velocity, at the beginning of θ is magnetic induction intensity direction and charged particle
The included angle of the beginning direction of motion, B are magnetic induction intensity, and q is the quantity of electric charge of charged particle；Wherein T is spiral fortune
In the dynamic period, π is pi, and m is charged particle mass, and B is magnetic induction intensity, and q is the quantity of electric charge of charged particle；Wherein h is screw pitch, and π is pi, and m is charged particle mass, and v is charged particle linear velocity, and θ is magnetic induction
The included angle in intensity direction and charged particle initial motion direction, B are magnetic induction intensity, and q is the quantity of electric charge of charged particle；Again
It substitutes intoFormula, wherein q are the quantities of electric charge of charged particle, and E is electric field strength, and L is that anode posts 201 arrive workpiece to be processed 4
The distance of required working position, m are charged particle mass.
And then three formula are improved, obtain three new formula：Wherein R is the radius of spin, E
It is electric field strength, L is the distance of working position needed for anode posts 201 to workpiece to be processed 4, and θ is magnetic induction intensity direction and band
The included angle in charged particle initial motion direction, B are magnetic induction intensity,；Wherein T is the screw period, and π is round
Frequency, m are charged particle mass, and B is magnetic induction intensity, and q is the quantity of electric charge of charged particle；Wherein h is spiral shell
Away from π is pi, and E is electric field strength, and L is the distance of working position needed for anode posts 201 to workpiece to be processed 4, and θ is magnetic strength
It is magnetic induction intensity to answer the included angle in intensity direction and charged particle initial motion direction, B.
Substitute into given data, then measure anode posts 201 to working position needed for workpiece to be processed 4 distance and it is required plus
Ministry of worker's distance of the position away from the projection of its 201 bottom end of anode posts, is set as radius of spin R, in the feelings equipped with tilt adjustments platform by its distance
H can be adjusted according to demand under condition, can then start electrophoretic painting process.It only needs to ensure during batch machining
4 installation site of workpiece to be processed keeps relative stability, and keeps each parameter stability that quick and high quality electrophoretic painting can be realized
Processing, wherein charging particle movement path is formed similar to shown in the A2 dotted lines in Fig. 4 in 4 surface of workpiece to be processed and gap
High uniformity and the electrophoresis of densification processing coating 401.Replacing workpiece to be processed 4 only needs to carry out simple computation again, to electric-field strength
Degree is adjusted.
Comparative example
Electrophoretic painting processing, charging particle movement path such as Fig. 3 are carried out with commercially available common double anode cathode electro-coating equipment
In A1 dotted lines shown in, the two sides production only in workpiece to be processed 4 towards 32 direction of anode construction is thicker and more uniform electricity
Swimming processing coating 401.
Detection
By taking the processing of the electrophoretic painting of vehicle steering wheel as an example, using identical coating material, to embodiment 1, embodiment 2 and comparison
Coating prepared by example ability cathode electrophoresis processing is detected, and result is as follows：
Wherein Thickness sensitivity takes mean value to obtain to measure 20 times, therefrom it is evident that magnetic field type double anode of the present invention is cloudy
The common double anode ability cathode electrophoresis that electrophoretic painting processing effect caused by the electrophoretic painting equipment of pole is far superior to the prior art applies
It installs standby.
Claims (6)
1. a kind of magnetic field type double anode cathode electro-coating equipment, including it is electrophoresis tank, cathode construction, defeated with cathode construction cooperation
Two anode constructions for sending device and being oppositely arranged in electrophoresis tank, which is characterized in that electrophoresis trench bottom is equipped with magnetic field and machine occurs
Structure.
2. a kind of magnetic field type double anode cathode electro-coating equipment according to claim 1, which is characterized in that the magnetic field
Generating mechanism generates magnetic field by permanent magnet.
3. a kind of magnetic field type double anode cathode electro-coating equipment according to claim 1, which is characterized in that the magnetic field
Generating mechanism generates magnetic field by conductive coil.
4. a kind of magnetic field type double anode cathode electro-coating equipment according to claim 3, which is characterized in that the conduction
Coil connects the adjustable DC pulse power or constant adjustable DC power supply.
5. a kind of magnetic field type double anode cathode electro-coating equipment according to claim 1 or 2 or 3 or 4, feature exist
In the cathode construction is equipped with the first steering mechanism and the second steering mechanism, and the first steering mechanism front end is fixedly connected with clamping
Portion.
6. a kind of magnetic field type double anode cathode electro-coating equipment according to claim 1 or 2 or 3 or 4, feature exist
In the conveying device realizes the transport to cathode construction using two-orbit transport track.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810689389.3A CN108707953B (en) | 2018-06-28 | 2018-06-28 | Magnetic field type double-anode cathode electrophoresis coating equipment |
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| CN201810689389.3A CN108707953B (en) | 2018-06-28 | 2018-06-28 | Magnetic field type double-anode cathode electrophoresis coating equipment |
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| CN108707953B CN108707953B (en) | 2020-11-10 |
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ID=63872201
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111330754A (en) * | 2020-04-22 | 2020-06-26 | 湖南大学 | Electrostatic spraying magnetic field assisted photocuring method and device |
| CN112481659A (en) * | 2020-11-26 | 2021-03-12 | 江西理工大学 | Device and method for strengthening electrolyte movement in electrolytic cell in non-contact manner |
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| CN111330754B (en) * | 2020-04-22 | 2022-01-25 | 湖南大学 | Electrostatic spraying magnetic field assisted photocuring method and device |
| CN112481659A (en) * | 2020-11-26 | 2021-03-12 | 江西理工大学 | Device and method for strengthening electrolyte movement in electrolytic cell in non-contact manner |
| CN112481659B (en) * | 2020-11-26 | 2022-03-08 | 江西理工大学 | Device and method for strengthening electrolyte movement in electrolytic cell in non-contact manner |
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| CN108707953B (en) | 2020-11-10 |
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