JPH1199344A - Ion irradiation apparatus for coating - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a high-quality coating film on an object to be coated by mounting an ion generator having electrodes for generating positive ions and negative ions and a fan for transporting the generated ions toward the object to be coated adjustably in the blowing angle and distance of the ions to the object to be coated. SOLUTION: An ion generator 1 transports the positive ions and negative ions generated from a positive ion generating electrode 2 and a negative ion generating electrode 3 toward the object to be coated by the fan 4. A mounting stand S is used to support such ion generator 1. The mounting stand S is so constituted that the height and horizontal direction position of the ion generator 1 may be adjusted by sliding and adjusting a cylindrical body 6 in a vertical direction and turning and adjusting the cylindrical body in an axial direction and that the height and angle of the ion generator 1 may be adjusted by operating a cylinder 8. The object to be coated may be irradiated with the ions efficiently from a horizontal direction in compliance with the position of the spray patterns of a coating machine according thereto.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of spraying various products and parts (hereinafter simply referred to as "objects to be coated") with a coating machine. And a coating ion irradiation device devised so that a more advanced coating film can be formed.

[0002]

2. Description of the Related Art Usually, an object (non-conductive material) in the air
Is charged by static electricity, the surface of the object to be coated is charged in a state in which positive and negative charges are arranged irregularly, and this static electricity attracts dust (floating dust) in the air to be coated. It was attached to the surface of the object.

If the object to be coated in the charged state is spray-coated as it is in a normal atmosphere, dust attached to the object causes a coating failure. Debris was removed by air blowing or brushing the surface of the object.However, when air blowing or brushing was performed, the power charged on the surface of the object increased on the contrary due to air friction and the opposite effect was caused. There was a problem.

[0004] Therefore, the surface of the object to be coated is removed by a corona discharge air blow in a pre-coating process, or
It has been considered that the entire work space for painting is humidified (generally 70% humidity and a temperature of about 20 ° C.) by applying forced air to make it electrostatic-free, and then painting is performed.

[0005]

However, the dust removal countermeasure by the corona discharge air blow is effective during the air blow process, but at the end of the process, the object to be coated starts to take on static electricity again, and the painting operation is started. At this point, the charged state is restored to the original state, so that the problem of dust adhesion could not be fundamentally solved.

[0006] In addition, the antistatic measures by humidification result in an atmosphere where mold is most likely to occur when environmental considerations are taken into account. There was a problem that the mold floating inside had a bad effect on the health of workers.

On the other hand, regarding the finished state of the spray coating, the atomized paint particles which are spray-atomized potentially have a positive charge, and are unstable by a single charge. However, most of the paint particles reach the object to be coated in which the positive and negative charges are irregularly arranged before neutralization due to the speed of the spray air, and the above-mentioned positive charges are transferred to the object to be coated. This phenomenon has a problem in that this phenomenon is formed on the basis of the unevenness of the coating film, resulting in uneven coating (yuzu skin, scalp, etc.).

[0008] In addition, the above-mentioned paint particles repelled by the positive charges may be in a state of being bound to the negative charge particles in the air as described above, but the number is small and sufficient. However, since the binder paint particles are repeatedly applied to the coating film surface, there is a problem that the coating surface becomes uneven and the finish becomes extremely poor.

Accordingly, a technical object of the present invention is to provide a spraying machine for spraying various objects to be coated, by efficiently irradiating the coating surface of the object with ions with uniform coating. An object of the present invention is to provide an ion irradiation apparatus for coating that is devised so that a high-quality coating film that has been finely finished can be formed.

[0010]

Means taken by the present invention to solve the above-mentioned technical problems are as follows.

(1) An ion generator having a linear or needle-like electrode for generating positive ions and negative ions, and a blower for conveying ions generated from the electrode toward an object to be coated, At least angle adjustment and slide adjustment to the mounting stand so that the ion spray angle and distance to the object can be adjusted freely.
(Claim 1)

(2) The mounting stand on which the ion generator is mounted so as to adjust the angle and the slide is freely movable or semi-fixed. (Claim 1)

(3) The ion generator is mounted sideways or downward on the mounting stand. (Claim 3)

According to the first aspect of the present invention, the corona discharge based on the emission of positive and negative ions causes
It can decompose molecules in the air to generate neutralizing ions that share positive and negative charges, and then apply the neutralizing ions to the air blower by adjusting the angle and slide of the ion generator. Since the object to be coated can be reliably and efficiently irradiated, the paint particles sprayed from the coating machine are uniformly charged to reach the coated surface of the object to be coated, and the coated surface is attracted by the opposite charged ions to the coated surface. Since the charged state can be set to “0”, it is possible to prevent dust from adhering to the painted surface.

Further, according to the means described in the above (1), the spray coating can be performed while efficiently mixing the neutralizing ions irradiated from the ion generator with the coating particles. The stable positive charge is converted into a stable one with both poles by the ions, and the same principle as the principle that the magnetic counter electrodes attract each other works, and the coating film is in a wet state and shows fluidity. At the stage where the coating film is formed, the result is that the paint particles are attracted to each other and aligned, and since this state is continued during coating, there is no unevenness on the coated surface, high density and adhesion. To form a coating film of good quality.

According to the means according to claim 2 described in the above (2), the mounting stand to which the ion generator is mounted is configured to be movable or semi-fixed, so that the ion generator can be moved to any place. Thus, it is possible to exhibit the function of accurately irradiating ions to the object to be coated and the stability of reliably irradiating ions to the object to be coated by installing an ion generator at a predetermined place.

According to the means of claim 3 described in the above (3), the object to be coated can be irradiated with ions from the lateral direction or from above.
According to the angle of coating by the coating machine and the special shape of the object to be coated, the object is effectively irradiated with ions.

As described above, the above (1) to (1)
By solving the above technical problem by means of (3),
The problem of the conventional technique can be solved.

[0019]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a coating ion irradiation apparatus according to the present invention.
FIG. 2 is a front view of the present invention in which the whole is configured horizontally, and FIG. 2 is a side view thereof. In the drawing, reference numeral 1 denotes a positive ion generating electrode 2 and a negative ion generating electrode formed in a front surface in a linear or needle shape. 3 and the fan 4 rotated by the motor 4M to rotate the positive and negative ions generated from these electrodes 2 and 3 to the object 1 to be coated.
5 shows an ion generator provided with a blower 4 for transporting the ion generating device 5 toward the surface 5 (see FIG. 3).

The reference numeral S generally designates a horizontal or semi-fixed type, which is used when irradiating the object 15 to be coated set in a horizontal direction with ions from the horizontal direction. The stand S includes a main shaft 5 having a lower end to which an installation base 5T is mounted, a cylindrical body 6 fitted to the main shaft 5 so as to be rotatable, and a horizontal rotation with respect to the cylindrical body 6. Two upper and lower support arms 9 and 10 pivotally connected to each other, a balancing cylinder 8 having an upper end 8A rotatably attached to an intermediate portion of one of the support arms 9, and a lower end 7A being a cylindrical body. 6 and a piston shaft 7 of the cylinder 8 rotatably attached to an intermediate portion of the cylinder 6.
The above-described ion generator 1 is attached to the distal ends of the support arms 9 and 10 in a horizontal direction (horizontal state).

The horizontal mounting stand S configured as described above can adjust the height or horizontal position of the ion generator 1 by slidingly adjusting the cylindrical body 6 in the vertical direction or rotating the cylindrical body 6 in the axial direction. Can be arbitrarily adjusted, and the height and angle of the ion generator 1 can be arbitrarily adjusted by operating the cylinder 8. Therefore, by performing each of these adjustment operations, the position of the object 15 to be coated can be adjusted. It is possible to efficiently irradiate ions from the lateral direction in accordance with the position of the spray pattern of the coating machine (not shown).

FIG. 3 is a side view showing the whole of the present invention constructed in a vertical position. In this drawing, the reference numeral S 'designates a movable or semi-fixed type. Further, as shown in the figure, a vertical mounting stand used when irradiating ions from above onto the object 15 to be coated, which is set upward on the mounting table 14, and the stand S 'has an installation base at the lower end. A main cylinder 6 fitted to the main shaft 5 to which the 5T is mounted so as to be vertically slidable and rotatable, and a horizontal arm 12 mounted horizontally to the cylinder 6 via a support portion 11; A sub-cylinder 13 is fitted to the horizontal arm 12 so as to be slidable and rotatable.

Further, the mounting stand S 'is provided with two support arms 9, 10 mounted downward on the sub-cylinder 13.
A balance cylinder 8 having a lower end 8A pivotally connected to an intermediate portion of one support arm 9; and a cylinder having an upper end 7A pivotally connected to an intermediate portion of the sub-cylinder 13. And the lower end of the two support arms 9 and 10, and the above-described ion generator 1 is attached downward.

The vertical mounting stand S 'constructed as described above allows the main cylinder 6 to be slid up and down,
By rotating the support portion 11, the height and the horizontal position of the ion generator 1 can be arbitrarily adjusted.
By sliding the sub-cylinder body 13 and operating the cylinder 8, the ion generator 1 can be moved and adjusted in the horizontal direction, and the angle can be adjusted. According to the position of the object 15 and the position of the spray pattern of the coating machine (not shown), it is possible to efficiently irradiate ions from above.

[0025]

The ion irradiation apparatus for coating according to the present invention is as described above. By adjusting the angle and the distance of the mounting stand, ions can be efficiently adjusted in accordance with the position of the object to be coated and the spray pattern. The coating film spray-formed using a coating machine while irradiating ions using the irradiation apparatus of the present invention can be applied reliably and positively, unlike the coating film formed by general coating, in addition to positive and negative. Because there are no particles with negatively biased charges, an extremely high quality coating film can be formed, and it does not change even when forcibly dried. It has the advantage that it can be used for coating objects to be coated of all properties such as metal, plastic, woodwork, and enamel.

[Brief description of the drawings]

FIG. 1 is a front view illustrating the configuration of a horizontal ion irradiation apparatus according to the present invention. .

FIG. 2 is a side view illustrating the configuration of the horizontal ion irradiation apparatus shown in FIG.

FIG. 3 is a side view illustrating a configuration of a vertical ion irradiation apparatus according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ion generator 2, 3 Ion generation electrode 4 Blower S, S 'Mounting stand

Claims (3)

[Claims] An ion generator comprising a linear or needle-like electrode for generating positive ions and negative ions, and a blower for conveying ions generated from the electrode toward an object to be coated is provided. An ion irradiation device for coating, characterized in that the ion irradiation device is attached to the mounting stand at least so that the angle and the slide can be freely adjusted so as to freely adjust the angle and distance of spraying ions on the mounting stand. 2. The ion irradiation apparatus for coating according to claim 1, wherein the mounting stand on which the ion generator is mounted so as to adjust the angle and the slide is freely movable or semi-fixed. 3. The coating ion irradiation apparatus according to claim 1, wherein the ion generator is mounted on the mounting stand in a horizontal or downward direction.