JPH0639337A - Pattern film preparing device - Google Patents

Abstract

PURPOSE:To adjust optionally and simply the 3-dimensional feeling and the like of a pattern formed on the surface of a material to be coated. CONSTITUTION:A magnet storing section 12 is formed on a support jig 11 supporting a material W to be coated, and the distance from a magnet stored therein to a rear face of the material W to be coated can be adjusted optionally by screwing a screw 16 by means of a handle 18. The width of a borderline of a film pattern formed on the surface of the material to be coated correspondingly to an outer peripheral section of the magnet can be adjusted optionally by changing the distance, and the degree of three-dimensional feeling and deep touch can be changed easily.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for forming a pattern on a coating film by orienting powdery magnetic materials contained in a coating material in various directions by the action of magnetic force.

[0002]

2. Description of the Related Art Conventionally, as a method for forming a pattern such as characters, marks or designs on the surface of a coating film, an adhesive tape on which a predetermined pattern is printed is attached to the surface of the coating film, or
There has been known a method of covering a coating film surface with a masking paper in which a predetermined pattern portion is cut off, and further applying a coating material on the masking paper. However, in any of the methods for forming such a pattern, not only is it unfavorable in appearance due to a step due to the adhesive tape or the coating film on the surface of the coating film, but a lot of labor and time are required for the sticking work of the adhesive tape or masking paper. Therefore, there is a problem in terms of cost. In addition, dust and the like adhere to the stepped portion of the pattern, which makes cleaning work difficult, and the adhesive tape or the coating film may peel off from the stepped portion.

In order to solve such a problem, a method is proposed in which a powdery magnetic material is mixed in a coating material and a magnet is used to orient the magnetic material to form a desired pattern in a coating film. Has been done. Conventionally, this kind of technology
For example, there is one described in JP-A-63-175,670. The method for forming this pattern coating film is to form a liquid coating film containing a powdery magnetic material on the surface of an object to be coated,
A method of forming a pattern by causing a magnet to act on a magnetic material in a desired portion while the coating film is in a fluidized state, wherein the desired pattern size or By applying a magnetic force to the shape, the orientation of only the magnetic material in the part of the powdery magnetic material that is uniformly dispersed in the coating film affected by the magnetic force is made different from other parts to form a pattern To do.

[0004]

One of the advantages of the patterned coating film obtained by such a method for forming a patterned coating film is that by forming a blur-like pattern, a depth feeling, a depth feeling, and a three-dimensional feeling can be obtained. A certain pattern can be formed. However, it has been found that the depth and the like differ depending on the strength of the magnetic force generated by the magnet on the surface of the object to be coated. Conventionally, when changing the three-dimensional effect of the pattern, the magnetic strength of the magnet is changed. It is changed or a non-magnetic inclusion is sandwiched between the back surface of the object to be coated and the magnet.

However, in the case of forming a pattern coating film on a mass-produced product, not only the positioning accuracy cannot be obtained by the conventional method as described above, but also it takes time to adjust the thickness of the inclusions, and the coating efficiency is increased. There was a problem that was not good. The present invention has been made in view of the above-mentioned problems of the prior art, and makes it possible to easily adjust the magnetic force that the magnet acts on the surface of the object to be coated, so that the three-dimensional effect and the depth feeling of the painting are achieved. The purpose is to be able to arbitrarily adjust the above.

[0006]

The present invention for achieving the above object provides a pattern coating film used when a coating material containing a powdery magnetic material is applied to the surface of an article to be coated made of a non-magnetic material. A forming apparatus, in which a magnet accommodating portion is formed on a support jig having a supporting surface for supporting a back surface of an article to be coated, and a position of a magnet arranged on the back surface of the article to be coated is brought into contact with the article to be coated. Forming a pattern coating film, characterized in that a position adjusting member for moving between a position and a position away from this position is attached to the supporting jig to adjust a distance between the magnet and the article to be coated. It is a device.

[0007]

In the pattern coating film forming apparatus having the above construction, the distance between the article to be coated and the magnet is adjusted to an arbitrary value from the position where the magnet comes into contact with the article to be coated and the distance away from the article. It This adjustment is performed by operating the position adjusting member. In this way, by adjusting the distance between the magnet and the object to be coated, the strength of the magnetic force generated on the surface of the object to be coated can be changed, and the three-dimensional effect or depth feeling of the pattern formed on the coating film is desired. It can be set to the degree of.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a perspective view showing an embodiment of the present invention, and FIG. 2 is a process diagram showing a method for forming a pattern coating film using a pattern coating film forming apparatus according to the present invention. As shown in FIG. 1, a pattern coating film forming apparatus according to an embodiment of the present invention has a support jig 11, and the surface of the support jig 11 has a shape corresponding to the back surface of the article W to be coated. It is formed by using FRP or plaster. Then, as shown in FIG. 3, a magnet accommodating portion 12 is formed in the support jig 11. A holding plate 14 having a magnet 13 attached to the surface thereof is housed in the magnet housing portion 12 so as to be vertically movable in FIG.

In order to move the holding plate 14 up and down, a large diameter portion at the tip of a male screw portion 16 screwed to a female screw portion 15 fixed to the support jig 11 is fixed to the holding plate 14. It is rotatably fitted to the member 17. Therefore, by rotating the handle 18 attached to the lower end portion of the male screw portion 15, a position where the surface of the magnet 13 substantially coincides with the support surface of the support supporting jig 11 and a position apart from this position are obtained. It can be moved. For example, when the character “N” is to be drawn on the surface of the article W to be coated, the plate-shaped magnet 12 is used. This magnet 1
As 3, it is preferable to use a flexible magnet rubber (ferrite magnet having nitrile rubber as a base material) or the like in order to correspond to the shape of the back surface Wb of the object W to be coated.
Therefore, when the back surface of the article W is curved as shown in FIGS. 4A and 4B, the magnet 13 is shown in FIG. 4B in correspondence with the curved surface. So that it will be curved.

Next, a specific example of forming a pattern coating film on the front surface Wa of the article W using the pattern coating film forming apparatus having the above-described structure will be described. First, the article W to be coated according to this example is
It is a base material for forming the pattern coating film of this embodiment and is made of a non-magnetic material. The specific material and shape are not particularly limited, and plastic, aluminum, or the like can be used. Automotive parts include exterior parts such as bumpers, protection malls, front grills, rear grills, wheel covers, vent louvers, etc.
Interior parts, such as an instrument panel, can be illustrated. These objects to be coated may be subjected to pretreatment, undercoat coating, and intermediate coating as necessary.

The paint according to the present embodiment is a two-coat 1 in which a base paint and a clear paint are applied wet-on-wet.
It is a bake type paint. The base paint is a liquid paint in which a powder magnetic material is mixed in a paint mainly composed of a vehicle component and a solvent, and if necessary, a coloring pigment, a dye, an aluminum powder, a pearl pigment, mica, etc. are mixed. can do. As the vehicle component, an ordinary coating resin can be used, and a resin that is dried or reaction-cured at room temperature,
Examples thereof include resins that are cured or melted by heating.
Specifically, alkyd resin, polyester resin, acrylic resin, urethane resin, vinyl resin, amino resin, epoxy resin, phenol resin and the like are preferable. Moreover, an organic solvent and water are mentioned as a solvent. As the form of paint, organic solvent type, non-aqueous dispersion type, aqueous solution type,
A liquid form such as an emulsion type may be used. The powdery magnetic material is a powder whose orientation is changed by magnetic force, and for example, a powder of nickel, stainless steel having a high iron content, iron, or the like is preferable. The shape of the magnetic material is scale-like, thin plate-like,
It may be granular or the like, while the size of the magnetic material is 1 to 50 μm in the longitudinal direction or diameter, preferably 20 to 3
It is 0 μm. The mixing ratio of the powdery magnetic material is 1 to 3 parts by weight (solid content) of the vehicle component described above.
0 parts by weight, particularly 10 to 20 parts by weight are preferred.

The clear coating material according to this embodiment is a liquid coating material in which a powdery magnetic material is mixed in a coating material containing a vehicle component and a solvent as main components, and a normal coating resin is used as the vehicle component. Examples thereof include resins which can be dried and are cured by reaction at room temperature, and resins which are cured or melted by heating. Specifically, alkyd resin, polyester resin, acrylic resin, urethane resin, vinyl resin, amino resin, epoxy resin, phenol resin and the like are preferable, and it is more preferable to use the same resin as the vehicle component of the above-mentioned base paint. Moreover, an organic solvent and water are mentioned as a solvent. Examples of the form of the paint include liquid forms such as organic solvent type, non-aqueous dispersion type, aqueous solution type, and emulsion type. The coating material used in the present invention is not limited to the above-mentioned two-coat one-bake type coating material, and may be one-coat one-bake type coating material.

Next, the procedure of forming the pattern coating film and the operation of the apparatus for forming the pattern coating film will be described. As shown in FIG. 1 and FIG. 3, the back surface Wb of the article W to which pretreatment, undercoat coating, intermediate coating, etc. have been applied as necessary is brought into contact with the support jig 11 to remove the article W. Install. In FIG. 3, the surface of the magnet 13 is set to a position that substantially coincides with the surface of the support jig 11 by using the male screw 16 as a position adjusting member and the handle 18. In this way, after the object W to be coated is placed on the support jig 11, the base coating material 22 containing the powdery magnetic material 21 is applied to the surface of the object W to be coated, that is, the application surface Wa in a dry film thickness of 15 to It is applied so as to have a thickness of 35 μm. At this time, as shown in FIG. 5, the magnetic force generated from the magnet 13 acts on the powdery magnetic material 21 in the base coating material 22, and the powdery magnetic material 21 is oriented in the fluid base coating material 22. Start. After applying the base paint 22, the clear paint 23 is applied on the base paint 22 at a predetermined time interval (preferably 3 to 5 minutes) so that the dry film thickness is 15 to 35 μm. While the clear paint 23 is being applied, the magnetic force acts on the powdery magnetic material 21 from the magnet 13, and the orientation of the powdery magnetic material 21 continues to proceed as shown in FIG. The solvent contained in the base paint 22 has a lower boiling point than the solvent used for the solid paint or the clear paint due to the compatibility with the clear paint 23 applied by wet-on-wet and the restrictions such as equipment conditions such as a coating booth. A quick-drying solvent is used. Therefore, the coating film viscosity of the base coating material 22 increases between the application of the base coating material 22 and the application of the clear coating material 23, which temporarily suppresses the orientation of the powdery magnetic material 21. In this embodiment, since the magnet 13 is attached even while the clear paint 23 is being applied, the solvent contained in the clear paint 23 permeates into the base paint 22 and once the coating film of the base paint 22 is applied. The viscosity is lowered, and thereby the orientation of the powdery magnetic material 21 is promoted again. After the clear paint 23 is applied, the support mold 11 attached to the back surface Wb of the object W is removed from the object after a predetermined time (for example, 5 minutes), and in this state, the base paint 22 and the clear paint 23 are removed. Is baked under predetermined drying conditions. The orientation action of the powdery magnetic material 21 at the time of applying the coating material occurs as follows. That is, as shown in FIG. 5, in a portion where the magnetic force is not acting or where the action of the magnetic force is relatively weak, the powdery magnetic material 21 is a base paint as in the case of coating without attaching the magnet 13. 22 randomly arranged. On the other hand, in the portion where the magnet 13 is attached and the magnetic force acts, the powdery magnetic material 21 is oriented along the line of magnetic force. In particular, since the outer peripheral portion 13a of the magnet 13 has a strong magnetic force, the powdery magnetic material 21 is provided near the outer peripheral portion 13a.
Are aspirated to increase the density of the powder. On the other hand, in the central portion 13b of the magnet 13, the magnetic force lines act almost perpendicularly to the coating film, so that the powdery magnetic material 21 stands upright. Therefore, when observing the formed pattern coating film, the magnet 13
The powdery magnetic material 21 has a high density along the outer peripheral portion 13a, and the color of the magnetic material becomes strong in this portion. Further, since the magnetic material 21 stands upright in the central portion 13b of the magnet 13, the reflected light is weakened and the color becomes dark.

As shown in FIG. 3, the state of formation of the pattern coating film when the magnet 13 is arranged so as to contact the back surface Wb of the article W is as shown in FIG.
When the magnet 13 is closest to the object W to be coated in this manner, the magnetic lines of force generated on the object W to be coated are erected by the portion corresponding to the outer peripheral portion of the magnet 13, so that the magnetic field Material gathers and its density becomes high, and the boundary line S of the pattern
Will be formed clearly.

On the other hand, the handle 18 is rotated to move the magnet 13 to the back surface Wb of the article W as shown in FIG.
On the other hand, when separated by a predetermined distance D, the lines of magnetic force generated on the surface of the object to be coated W are inclined as compared with the case shown in FIG. 6, and the magnetic material 21 also tends to be horizontal. Then, the density of the magnetic material 21 also decreases, and the boundary line of the pattern becomes more blurred than in the case shown in FIG. Such a three-dimensional effect is achieved by the magnet 1
It can be arbitrarily set by adjusting the distance between the front surface of No. 3 and the back surface of the article W to be coated.

[0016]

As described above, according to the present invention, the width of the boundary line of the pattern formed on the surface of the article to be coated can be adjusted by operating the position adjusting member so that the width between the magnet and the back surface of the article to be coated is increased. By changing the distance, it is possible to make an arbitrary adjustment, and it is possible to quickly respond to a pattern change. Therefore, the work for forming the patterned coating film on the mass-produced product can be done quickly, and the production efficiency is greatly improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention,

FIG. 2 is a process diagram showing a method for forming a pattern coating film using a pattern coating film forming apparatus according to the present invention,

FIG. 3 is a sectional view taken along the line AA of FIG. 1 in a state in which the article to be coated is placed on a support jig,

FIG. 4 is a perspective view and a sectional view showing another specific example of the article to be coated,

FIG. 5 is a cross-sectional view showing a state in which the surface of an object to be coated is coated using the pattern coating film forming apparatus of the present invention,

FIG. 6 is a perspective view showing a state in which a patterned coating film is formed when a magnet is brought into contact with the back surface of an object to be coated,

FIG. 7 is a perspective view showing a formation state of a patterned coating film when the magnet is separated from the back surface of the article to be coated.

[Explanation of symbols]

W ... Object to be coated, Wb ... Back surface of object to be coated, 11 ... Support jig, 12 ... Magnet accommodating portion, 13 ... Magnet, 16 ... Male screw portion, 21 ... Powder magnetic material, 22 ... Base paint, 23 ... Clear paint.

Claims (1)

[Claims] 1. A device for forming a pattern coating film, which is used when a coating material containing a powdery magnetic material is applied to the surface of an article to be coated made of a non-magnetic material, the support supporting the back surface of the article to be coated. Position adjustment in which a magnet accommodating portion is formed on a supporting jig having a surface, and the position of the magnet arranged on the back surface of the object to be coated is moved between a position in contact with the object to be coated and a position away from this position. An apparatus for forming a patterned coating film, characterized in that a member is attached to the supporting jig and a gap between the magnet and the article to be coated is adjusted.