JP2000082566A - Corona-discharge treatment machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the work efficiency of corona-discharge treatment, by giving flexibility to at least a part of a discharge portion for corona-discharge treating surfaces of a building material to which a sealing material is applied. SOLUTION: A discharge treatment machine 1 comprises a body part 2 to be held by hand by a worker and an electrode 3 projecting forward from an end of the body part 2. The electrode 3 is made up of a flexible coil electrode so that discharge treatment can be carried out even if a gap between treated surfaces 4a, 4a of a building material 4 is narrow and winding. A power supply unit 6 is connected to the body part 2 via a cable 5. The electrode 3 mounted on a support rod 7. The electrode 3 is covered by a flexible tube made of an insulating synthetic rubber such as silicone rubber. Ends of the tube are sealed with a similar synthetic rubber. Not only the tube ends, but also the whole interior of the tube can be filled with silicone rubber or the like. Even a narrow and winding joint is efficiently discharge-treated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge treatment machine used for corona discharge treatment of a work surface prior to applying a sealing material to a building.

[0002]

2. Description of the Related Art Conventionally, sealing materials have been widely used to provide watertightness and airtightness to buildings and the like. As a method of applying the sealing material to the surface to be processed, a method of applying a primer after cleaning and degreasing the surface to be processed, drying the surface, and then applying the sealing material is adopted.
In addition, when the surface to be processed is a hard-to-bond surface such as a fluororesin-coated surface, it is difficult for the sealing material and the primer to firmly adhere to the surface to be processed, and the surface to be processed is likely to be peeled off. After roughening by sting, a sealing material is applied as described above.

[0003] However, the blasting process is very time-consuming and, depending on the degree of the blasting process, the adhesive force to the work surface is not sufficient. There was a problem of peeling.

[0004] Therefore, it is desired to develop a method of applying a sealing material capable of efficiently bonding a sealing material to a surface to be processed with a high adhesive strength even if the surface to be processed is a hardly bonded surface such as a fluororesin-coated surface. I was

Japanese Patent Application Laid-Open No. 4-146131 discloses a sealing method in which a flange is formed by bending an edge of a resin laminated metal, a corona discharge treatment is applied to the outer surface of the flange, and a sealing material is interposed. I have. By performing discharge treatment such as corona treatment on the work surface in this way, the wettability and reactivity (adhesion) of the work surface can be significantly improved, and the bonding strength can be improved.

[0006] Even when the work surface, which has conventionally been a problem, consists of a difficult-to-bond surface such as a fluororesin, no complicated processing such as blasting is required at all, and the work surface can be efficiently and reliably provided. A sealant can be adhered to.
In addition, the gaps between building materials such as various types of building panels and aluminum sashes constructed by this method are sealed with a high-performance, high-quality sealing material having excellent watertightness and airtightness. .

[0007]

Problems to be Solved by the Invention
In the case of corona discharge treatment as disclosed in Japanese Patent Application Publication No. 1 (1993) -1995, it is desired that the discharge treatment can be continued without replacing the discharge portion even if the joints to be subjected to discharge treatment have various shapes and sizes.

The present invention has been made in view of the above circumstances, and has as its object to remarkably improve the working efficiency of corona discharge treatment as pretreatment for sealing work.

[0009]

A corona discharge treatment machine according to the present invention (claim 1) is a corona discharge treatment machine for corona discharge treatment of a surface of a building material on which a sealing material is to be applied. Wherein at least a part of the corona discharge portion is made flexible.

In such a corona discharge treatment machine, the corona discharge portion can be moved along the joint while bending or curving the corona discharge portion, even if the joint is narrow and meandering, so that the corona discharge treatment can be continued.

The flexible portion of the corona discharge portion may be composed of a flexible insulating cylinder and a conductive wire disposed in the cylinder. The wire may be in the form of a coil or may be formed of a plurality of fine wires.

Further, the flexible portion may be made of a flexible insulating cylinder and a conductive powder filled in the cylinder.

The flexible portion may be composed of a wire made of a conductive material and an insulating layer covering the surface of the wire. This wire may be coiled.

The corona discharge treatment machine according to the present invention (claim 8) is a corona discharge treatment machine for corona discharge treatment of a surface of a building material on which a sealing material is to be applied. Is variable.

In such a corona discharge treatment machine, by adjusting the size of the discharge portion, for example, the width in accordance with the joint width, even at a portion having a different joint width, the discharge portion can be replaced with another one. Discharge work can be continued.

The discharge portion whose width can be adjusted is, for example,
It comprises first and second discharge electrodes arranged in parallel, and a support mechanism for connecting the second discharge electrode to the first discharge electrode so as to be able to move in parallel.

As the discharge treatment of the present invention, a corona discharge treatment is employed. This corona discharge treatment is suitable, for example, when a flexible discharge portion is formed using an insulating cylinder or an insulating coating.

As the corona discharge treatment, a method in which a discharge is generated between the electrode and the facing electrode by a high-frequency high voltage and the discharge treatment is performed by passing the object through the discharge space. Further, when the object to be processed is a conductor such as a metal, the surface to be processed can be modified by causing discharge between the electrode and the object to be processed by using the object to be processed as a facing electrode. In this case, the discharge conditions are usually a current of 10 to 1000 W and a processing time of about 0.1 to 30 sec.

In the present invention, building materials for a building include:
In the case of grounding, a conductive material such as a metal (for example, a panel or a sash) is used. When grounding is not used, building materials are not particularly limited, and examples include various resin-painted panels for building, painted aluminum sashes, etc., or wood for building, metal, ceramics boards, concrete panels, etc. coated with resin on the surface. Is done. In this case, even if the work surface is a resin-coated surface having a hard-to-bond surface such as a fluororesin, without performing a complicated blasting process,
The sealing material can be applied efficiently and very firmly.

The sealing material is a material that exhibits functions such as water tightness and air tightness. Examples thereof include a polysulfide-based sealing material, a modified silicone-based sealing material, a urethane-based sealing material, a silicone-based sealing material, and a polyisobutylene-based sealing material. Can be used,
There is no particular limitation.

After the corona discharge treatment by the corona discharge treatment machine of the present invention, the sealing material may be applied immediately or the primer treatment may be applied. Examples of the primer include various types of primers such as synthetic rubber-based, acrylic-based, urethane-based, epoxy-based, and silane-based primers that are appropriately blended with a silane coupling agent, a polyisocyanate, an epoxy resin, a synthetic rubber, an acrylic resin, and the like. Can be used. By performing the above-described corona discharge treatment, the adhesion between the work surface and the primer can also be improved, so that the work body and the sealing material can be further firmly bonded.

[0022]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the configuration of a discharge processing machine according to an embodiment.

The corona discharge treatment machine 1 has a main body 2 which is gripped by an operator and an electrode 3 protruding forward from the tip of the main body 2. The electrode 3 is formed of a flexible coil electrode so that discharge processing can be performed even if the gap between the processing surfaces 4a of the building materials 4 and 4 is narrow and winding. A power supply unit 6 is connected to the main body 2 via a cable 5. Reference numeral 7 denotes a support rod to which the coil electrode 3 is attached.

When conducting a corona discharge treatment on a conductive material such as a metal, it is necessary to insulate the discharge electrode.

2 to 6 show an example. In FIG. 2, the coil electrode 3 is covered with a tube 8 made of insulating synthetic rubber having flexibility such as silicon rubber. The distal end of the tube 8 is also sealed with a similar synthetic rubber 9. In addition,
Not only the distal end of the tube 8 but also the entire inside of the tube 8 may be filled with silicone rubber or the like.

In FIG. 3, the coil electrode is a loop-shaped coil electrode 10, and a tube 11 is fitted along the loop.

In FIG. 4A, a metal coil electrode 12 whose flexible portion has a loop shape and an insulating synthetic rubber 13 such as silicon rubber covering the surface of the coil electrode 12 (FIG.
(B)). FIG. 4B is an enlarged sectional view of the wire of the coil electrode 12.

In FIG. 5, the flexible portion is composed of a plurality of straight rod-shaped thin wires 14 made of metal such as copper and a tube 8 made of a flexible synthetic rubber such as silicon rubber surrounding the thin wires. I have. The distal end of the tube 8 is sealed with an insulating rubber 9.

In FIG. 6, the flexible portion is composed of a tube 8 made of a flexible synthetic rubber and a conductive powder 15 such as a metal powder filled in the tube 8.

The discharge treatment machine shown in FIGS. 2 to 6 can also perform discharge treatment efficiently at narrow and winding joints.

FIG. 7 shows the structure of a corona discharge treatment machine having a discharge portion whose width is adjustable. This discharge portion includes a first rod-shaped electrode 21 and the first rod-shaped electrode 2.
A screw shaft 23 and a guide rod 24 projecting from the base end side in the orthogonal direction are arranged in parallel with the first rod-shaped electrode 21, and the screw shaft 23 and the guide rod 24 pass through the base end side. A second rod-shaped electrode 22, a wing nut 25 screwed to the tip side of the screw shaft 23, and a spring 26 which is fitted on the screw shaft 23 and presses the rod-shaped electrodes in the separating direction. It is configured. By turning the wing nut 25, the distance d between the rod-shaped electrodes 21 and 22 can be adjusted, so that processing can be performed on joints having various joint widths without replacing the electrodes.

[0033]

As described above, according to the present invention, the discharge processing can be performed without changing the discharge portion even at the joint having a narrow winding and the joint having various widths, and the efficiency of the discharge processing work is remarkably improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a corona discharge treatment machine according to a first embodiment.

FIG. 2 is a configuration diagram of a corona discharge treatment machine according to a second embodiment, in which (a) is an exploded view and (b) is a cross-sectional view.

FIG. 3 is a configuration diagram of a front end portion of a corona discharge treatment machine according to a third embodiment.

FIG. 4A is a configuration diagram of a distal end portion of a corona discharge treatment machine according to a fourth embodiment, and FIG. 4B is an enlarged cross-sectional view of a coil.

FIG. 5 is a sectional view of a discharge portion of a corona discharge treatment machine according to a fifth embodiment.

FIG. 6 is a sectional view of a discharge portion of a corona discharge treatment machine according to a sixth embodiment.

FIG. 7 is a sectional view of a discharge portion of a corona discharge treatment machine according to a seventh embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Corona discharge treatment machine 3,10,12 Coil electrode 4 Building material 6 Power supply unit 8,11 Tube 14 Fine wire 15 Conductive powder 21 First rod electrode 22 Second rod electrode 23 Screw shaft 24 Guide rod 25 Wing nut

Claims (9)

[Claims] 1. A corona discharge treatment machine for corona discharge treatment of a surface of a building material on which a sealing material is to be applied, wherein at least a part of a discharge portion of the corona discharge treatment machine is made flexible. Corona discharge treatment machine. 2. A corona discharge treatment machine according to claim 1, wherein the flexible portion comprises a flexible insulating cylinder and a conductive wire disposed in the cylinder. 3. The corona discharge treatment machine according to claim 2, wherein the wire has a coil shape. 4. The corona discharge treatment machine according to claim 2, wherein the wire is composed of a plurality of straight rod-shaped fine wires. 5. The corona discharge treatment machine according to claim 1, wherein the flexible portion comprises a flexible insulating cylinder and conductive powder filled in the cylinder. 6. The corona discharge treatment machine according to claim 1, wherein the flexible portion comprises a wire made of a conductive material and an insulating layer covering the surface of the wire. 7. The corona discharge treatment machine according to claim 6, wherein the wire has a coil shape. 8. A corona discharge treatment machine for corona discharge treatment of a surface of a building material on which a sealing material is to be applied, wherein the size of a discharge portion of the corona discharge treatment machine is variable. Discharge treatment machine. 9. The discharge portion according to claim 8, wherein the discharge portion is formed by connecting first and second discharge electrodes arranged in parallel, and connecting the second discharge electrode so as to be able to move in parallel with respect to the first discharge electrode. And a supporting mechanism.