CN101859640A - Coating method of conductive coil - Google Patents
Coating method of conductive coil Download PDFInfo
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- CN101859640A CN101859640A CN200910130400A CN200910130400A CN101859640A CN 101859640 A CN101859640 A CN 101859640A CN 200910130400 A CN200910130400 A CN 200910130400A CN 200910130400 A CN200910130400 A CN 200910130400A CN 101859640 A CN101859640 A CN 101859640A
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Abstract
The invention relates to a coating method of a conductive coil, which comprises the following steps of: firstly providing a conductive wire material with fixed length, and winding the conductive wire material into a conductive coil which comprises a fixed number of turns; then carrying out electro-deposition coating on the conductive coil, providing a water-soluble insulating coating with charged ions and driving the insulating coating to move towards the conductive coil which has different polarity with the insulating coating to ensure that the insulating coating is completely coated on the surface of the conductive coil; and finally hardening the insulating coating positioned on the surface of the conductive coil, and forming an insulating layer on the surface of the conductive coil. Through the invention, the working procedure of electro-deposition coating is carried out only after the conductive wire material is wound into the conductive coil, which avoids the damage to the insulating layer in the bending and winding processes, thereby improving the qualified ratio of products.
Description
Technical field
The present invention relates to a kind of coating process of conductive coil, relate in particular to the coating process of the conductive coil of formation that a kind of non-cylindric electric wire twines.
Background technology
Induction coil is a kind of current-carrying element, can produce magnetic field when passing to electric current, often is applied on the electronic components such as inductance or transformer.General induction coil twines in the shape of a spiral structure by cylindrical wire metallic conductor and forms, and on the metallic conductor surface with one deck insulating varnish.Under ideal environment, should be uniformly distributed on the sectional area by the electronics in the metallic conductor; Yet, in fact, the state of high frequency particularly, electronics in the metallic conductor concentrates on the position on surface, makes and vague and generalization of middle section also reduces the area that metallic conductor can transport electronics, significantly reduce the efficient that electronics transmits, be called kelvin effect (Skin Effect).Especially at present electronic product increases day by day to the demand of power, has also increased the burden of induction coil, if only use the cylindric plain conductor of larger sectional area to overcome problem, has limited the possibility of electronic product microminiaturization beyond doubt.
For solving the problem of above-mentioned cylindric plain conductor, industry is developed flat conductor.Compared to cylindric plain conductor, flat conductor has bigger surface area, even if under the state of high frequency, also can provide preferable electric current upwards of movement.In addition, flat conductor also can be avoided producing unnecessary space when winding is stacked into the coil state, can reduce the volume of coil, meets the demand of electronic product microminiaturization.General flat conductor at first with metal (as the copper metal etc.) pressure processing, makes metal by force by mould, and obtains preestablishing the cylindric bare wire of sectional area size in the process of making.Then, should cylindric bare wire be the flat bare wire through the external force compressional deformation again.For making this flat bare wire have the ability of insulation, outer with a layer insulating at this flat bare wire.Common being used for the method that insulating material is coated flat bare wire is to adopt the mode of soaking, and this insulating material is attached to and toast this insulating barrier of formation on the flat bare wire again.
Yet, adopt the method for soaking, because of possessing a large amount of solvents, will cause the pollution of environment.Therefore in recent years, electrostatic powder coating (ElectrostaticPowder Coating) method that must not use solvent also widely industry accept.The electrostatic powder coating method is introduced powdery paints in one spray gun, and this spray gun front end has an air-flow spout to be desired on the object of application in order to this powdery paints is sprayed onto.In addition, this spray gun front end also is provided with a high-field electrode, and when the object ground connection of institute desire spraying, this high-field electrode can produce corona discharge to this object.Powdery paints through this high-field electrode can be obtained negative electrical charge from the high-field electrode of this spray gun front end, and at this moment, powdery paints will be attracted by the object of neutrality, and then is attached to this object surfaces, reaches the effect of application.At last, the flat conductor of finishing electrostatic spraying is wound in helical coil, thinks other electron component assembling use.Yet, no matter use aforementioned which kind of lackering method, the insulating varnish that is positioned at these four corners of flat bare wire is less owing to adhering to thickness, in the process of making flat conductor and with flat conductor, bend in the operation of helical coil, easily because stretching of flat bare wire or extruding change surface area and come off or break, especially be positioned at the position of bending end points, damage the insulation effect of insulating barrier.So, may cause short circuit, influence the operate as normal of electronic component.
Summary of the invention
Main purpose of the present invention causes the damage of insulating barrier when being to avoid making flatwise coil, to improve the product fine rate.For achieving the above object, the invention provides a kind of coating process of conductive coil, comprise the steps:
A) provide the step of electric wire: this electric wire has a both measured length;
B) the coil step of twining: this electric wire is wound in a conductive coil of being made up of the circle circle of prearranged number;
C) electricity the step of application: the water-soluble coatings that has charge ion is provided, and drives this coatings and move, make this coatings complete packet be overlying on this conductive coil surface towards this conductive coil; And
D) step of formation insulating barrier: sclerosis is positioned at the coatings on this conductive coil surface, forms an insulating barrier in this conductive coil surface, whereby, makes the complete protection that is subjected to insulating barrier of this conductive coil, improves the effect that insulate.
Wherein, this coatings is that anionic electrodeposition coating, and this anionic electrodeposition coating and be can be anion acryl resin or anion polyurethane resin; Perhaps this coatings is that cation electrodeposition coating, and this cation electrodeposition coating and be can be cation epoxy resin, cation acryl resin or polyamide ester resin.
In the step that forms insulating barrier, according to the difference of coatings, apply a hardening temperature or a sclerosis exciting light, make these coatings sclerosis form insulating barrier.
For increasing insulation effect of the present invention, after the step of finishing this formation insulating barrier, repeat step that this electricity the step of application and form insulating barrier to increase the number of this insulating barrier.The number of this insulating barrier is between 1 to 5 layer.
The coating process of conductive coil of the present invention in electric wire finish twine to form conductive coil after, carry out again electricity the operation of application, make coatings can be attached to the surface of this conductive coil, can not destroy the structure of insulating barrier because of follow-up work flow.So, effectively avoid traditional phenomenon that may cause insulating barrier to peel off or break when enamelled wire is twined, effectively promoted the acceptance rate of product.
Description of drawings
Fig. 1 is the step block schematic diagram of coating process one preferred embodiment of conductive coil of the present invention;
Fig. 2-1 is the steps flow chart schematic diagram of a preferred embodiment in the coating process of conductive coil of the present invention to 2-4.
Embodiment
Relevant detailed description of the present invention and technology contents now are described as follows with regard to conjunction with figs.:
See also shown in Figure 1ly, it is the step block schematic diagram of one embodiment of the present invention, and as shown in the figure: the present invention is a kind of coating process of conductive coil, comprises the steps:
A) provide the step (S10) of electric wire: this electric wire has a both measured length;
B) the coil step (S20) of twining: this electric wire is wound in a conductive coil of being made up of the circle circle of prearranged number;
C) electricity the step of application (S30): the water-soluble coatings that has charge ion is provided, and drives this coatings and move, make this coatings complete packet be overlying on this conductive coil surface towards this conductive coil that has with this coatings dissimilar polarities; And
D) step (S40) of formation insulating barrier: sclerosis is positioned at the coatings on this conductive coil surface, forms an insulating barrier in this conductive coil surface, whereby, makes the complete protection that is subjected to insulating barrier of this conductive coil, improves the effect that insulate.
In addition, for increasing the insulation effect of this conductive coil, after the step of finishing this formation insulating barrier (S40), this conductive coil is repeated the step (S40) that this electricity the step of application (S30) and formed insulating barrier, to increase the number of this insulating barrier.
In the present invention, this electric wire can be both column type wire rod of measured length, or is both non-cylindrical wire rod such as flat wire, rectangular lines, irregular line of measured length.In the present embodiment, be example with the flat wire, see also shown in Fig. 2-1, the electric wire 10 of platypelloid type, it has the first wheelbase R1 and the second wheelbase R2 by the kernel of section place, and this first wheelbase R1 and this second wheelbase R2 are not isometric relation.Utilize artificial or mechanical mode to be wound in a conductive coil 20 of being formed by the circle circle 21 of prearranged number electric wire 10, shown in Fig. 2-2, this conductive coil 20 can make this conductive coil 20 be applicable to various electronic installations according to the number of different demand decision circle circles 21.
After waiting to finish this conductive coil 20, utilize electricity the mode of application coatings is attached to the surface of this conductive coil 20.At first, this conductive coil 20 that winds is soaked in the water-soluble coatings that has a charge ion, this coatings can application or anionic electrodeposition according to cation electrodeposition and application and select for use cation electrodeposition coating respectively or anionic electrodeposition coating; This cation electrodeposition coating and be can be cation epoxy resin, cation acryl resin or polyamide ester resin; This anionic electrodeposition coating and then be can be anion acryl resin or anion polyurethane resin.Be provided with the electrode of two dissimilar polarities in this coatings, and this conductive coil 20 is connected electrically on the electrode with this coatings opposite polarity, employed voltage is between between the 30V to 300V between these two phase different electrodes.After applying voltage, these coatings move towards the direction of this conductive coil 20, and are coated on the surface of this conductive coil 20.When finish this coatings is attached to these conductive coil 20 surfaces after, can utilize thermmohardening technology, make these coatings sclerosis form the surface that insulating barriers 30 are covered in this conductive coil 20, shown in Fig. 2-3.Wherein, when carrying out thermmohardening technology, then apply a hardening temperature, this hardening temperature is between 100 ℃ to 250 ℃, and the time that applies this hardening temperature was between 5 to 60 minutes.Except thermmohardening technology, also can use photo-hardening technology this coatings that hardens, wherein, can select sclerosis exciting lights such as infrared light or ultraviolet light for use.Using photo-hardening technology or thermmohardening technology is to select according to the difference of coatings.In addition, if desire increases the insulation effect of this conductive coil 20, can after finish the coatings sclerosis, carry out electricity once more and application, to increase the number of this insulating barrier 30, shown in Fig. 2-4.Wherein, the number of this insulating barrier 30 is between 1 to 5 layer.
In sum, just carry out electricity after the winding and application formation insulating barrier, be different from traditional electric wire is carried out earlier and just begin to be wound in coil after electricity application because the coating process of conductive coil of the present invention is finished electric wire.Therefore, the insulating barrier that can avoid being attached on the electric wire makes its edge or end angle break, damage because of the operation of twining, can promote the production acceptance rate of product.
Below the present invention is described in detail, only the above person only is the preferred embodiments of the present invention, when not limiting scope of the invention process.Be that all equalizations of doing according to the present patent application scope change and modify etc., all should be included in the patent covering scope of the present invention.
Claims (10)
1. the coating process of a conductive coil is characterized in that, comprises the steps:
The step (S10) of electric wire is provided: described electric wire (10) has a both measured length;
The step (S20) that coil twines: described electric wire (10) is wound in a conductive coil (20) of being made up of the circle circle (21) of prearranged number;
The electricity the step of application (S30): the water-soluble coatings that has charge ion is provided, and it is mobile towards the described conductive coil (20) that has with described coatings dissimilar polarities to drive described coatings, makes described coatings complete packet be overlying on described conductive coil (20) surface; And
Form the step (S40) of insulating barrier: sclerosis is positioned at the described coatings on described conductive coil (20) surface; make it form an insulating barrier (30) on described conductive coil (20) surface; whereby; make the complete protection that is subjected to described insulating barrier (30) of described conductive coil (20), improve the effect of insulation.
2. the coating process of conductive coil according to claim 1, it is characterized in that, after the step of finishing described formation insulating barrier (S40), repeat step (S40) that described electricity the step of application (S30) and form described insulating barrier to increase the number of described insulating barrier (30).
3. the coating process of conductive coil according to claim 2 is characterized in that, the number of described insulating barrier (30) is between 1 to 5 layer.
4. the coating process of conductive coil according to claim 1 is characterized in that, in the step (S40) that forms described insulating barrier, applies a hardening temperature, makes described coatings sclerosis form described insulating barrier (30).
5. the coating process of conductive coil according to claim 4 is characterized in that, described hardening temperature is between 100 ℃ to 250 ℃.
6. the coating process of conductive coil according to claim 4 is characterized in that, the time that applies described hardening temperature was between 5 to 60 minutes.
7. the coating process of conductive coil according to claim 1 is characterized in that, in the step (S40) that forms described insulating barrier, applies a sclerosis exciting light, makes described coatings sclerosis form described insulating barrier (30).
8. the coating process of conductive coil according to claim 7 is characterized in that, described sclerosis exciting light is infrared light or ultraviolet light.
9. the coating process of conductive coil according to claim 1 is characterized in that, described coatings is that anionic electrodeposition coating, and described anionic electrodeposition coating and be can be anion acryl resin or anion polyurethane resin.
10. the coating process of conductive coil according to claim 1 is characterized in that, described coatings is that cation electrodeposition coating, and described cation electrodeposition coating and be can be cation epoxy resin, cation acryl resin or polyamide ester resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910130400A CN101859640A (en) | 2009-04-08 | 2009-04-08 | Coating method of conductive coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910130400A CN101859640A (en) | 2009-04-08 | 2009-04-08 | Coating method of conductive coil |
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| Publication Number | Publication Date |
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| CN101859640A true CN101859640A (en) | 2010-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910130400A Pending CN101859640A (en) | 2009-04-08 | 2009-04-08 | Coating method of conductive coil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151162A (en) * | 2011-12-07 | 2013-06-12 | 一诺科技股份有限公司 | Manufacturing method of insulation coil |
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2009
- 2009-04-08 CN CN200910130400A patent/CN101859640A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151162A (en) * | 2011-12-07 | 2013-06-12 | 一诺科技股份有限公司 | Manufacturing method of insulation coil |
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Application publication date: 20101013 |