JPH0570665U - Masking jig - Google Patents

Abstract

(57) [Abstract] [Purpose] The jig body that contacts the peripheral surface of the opening of the object to be coated is strengthened to prevent shrinkage due to heat during baking and other coatings, and prolong life, and Prevents scraping of the foam and eliminates stains on the coated surface of the coated object. [Structure] In a masking jig A made of a foamed resin for fitting the jig body 1 into the opening c1 of the bumper C and masking the opening c1, at least the surface of the opening fitting portion 9 of the jig body 1 is coated. The film 11 is formed. The surface of the opening fitting portion 9 is impregnated with a part of the coating material forming the coating film 11 to form the hard layer 13.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to improvement of a masking jig, and particularly to measures for extending its life.

[0002]

[Prior Art]

 2. Description of the Related Art Conventionally, as a masking jig used for coating an object to be coated, for example, as disclosed in Japanese Utility Model Laid-Open No. 2-61465, a jig main body is fitted into an opening of the object to be coated. It is known that the opening is masked. In this masking jig, an elastic material made of silicon rubber is attached to the outer periphery of the jig body in order to improve the peelability of the paint attached to the jig body.

However, since the above-mentioned conventional masking jig is constructed by assembling a plurality of constituent members, it takes a lot of time to make them according to the shape of the opening of the article to be coated. There is.

Therefore, for example, if a masking jig is molded with a foamed resin such as urethane foam, it can be easily obtained simply by injecting a molding raw material into a molding die. A masking jig made of metal is used.

[0005]

[Problems to be solved by the device]

 However, in the above-mentioned foaming resin masking jig, the jig body shrinks due to heat during painting such as baking, and there is a gap between the jig and the opening of the object to be coated, which makes it difficult to use. There's a problem.

In use, the opening fitting portion of the jig body comes into contact with the peripheral surface of the opening of the article to be worn, and the foam powder scraped off due to the abrasion causes dust on the coated surface of the article to be coated. There is also the problem of adhesion and stains on the coating surface.

The present invention has been made in view of the above points, and an object thereof is to strengthen a jig main body portion that comes into contact with the peripheral surface of the opening of a workpiece in a masking jig made of a foaming resin. By doing so, it is possible to prevent shrinkage due to heat during baking coating and prolong life, and to prevent scraping off of the foam due to contact and to prevent stains on the coated surface of the coated object. is there.

[0008]

[Means for Solving the Problems]

 In order to achieve the above object, the solution means of the present invention is a masking jig made of a foamed resin for fitting a jig body into an opening of an article to be masked and masking the opening. A coating film is formed on at least the surface of the opening fitting portion. Further, the surface layer of the opening fitting portion is impregnated with a part of the coating material forming the coating film to form the hard layer.

[0009]

[Action]

 With the above structure, according to the present invention, a coating film is formed on at least the surface of the opening fitting portion of the jig body, and a part of the paint forming the coating film is impregnated on the surface portion of the opening fitting portion. Since the hard layer is formed by being hardened, this hard layer prevents the jig main body from shrinking due to heat during coating such as baking coating, thus creating a gap between the jig and the opening. Not able to withstand long-term use.

Further, even if the opening fitting portion of the jig body comes into contact with the peripheral surface of the opening of the article during use, the opening fitting portion (foam) is protected by the hard layer and may be scraped off. In addition, the powder of the foam adheres to the coated surface of the object to be coated as dust, so that the coated surface is not contaminated.

[0011]

【Example】

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

1 and 2 show a masking jig A according to an embodiment of the present invention, and the masking jig A is integrally formed of foam resin such as urethane foam. In FIGS. 1 and 2, reference numeral 1 denotes a jig body having a substantially rectangular parallelepiped shape that is long in the lateral direction. The jig body 1 is formed on a bumper C as an article to be coated of an automobile B as shown in FIG. It is formed to correspond to the shape of the horizontally elongated rectangular air inlet opening c1.

On the back side (right side in FIG. 1) of the jig body 1, three vertical grooves 3, 3, 3 and one horizontal groove 5 are formed, and these vertical grooves 3, 3, 3 and horizontal groove 5 are When the jig body 1 is fitted into the opening c1 of the bumper C, it is fitted into the three vertical bars c2, c2, c2 and one horizontal bar c3 formed in the opening c1. Has been done. Further, on the front side (left side in FIG. 1) of the jig main body 1, there is integrally provided a grip portion 7 that is gripped by an operator during painting.

Further, as a feature of the present invention, the surface of the jig body 1 excluding the front side, that is, the entire surface of the opening fitting portion 9 is coated with a paint such as urethane paint several times with a brush or the like. A coating film 11 having a film thickness of about 50 μ is formed by coating. The surface of the opening fitting portion 9 of the jig body 1 is impregnated with a predetermined depth of a part of the coating material forming the coating film 11, and the hard layer 13 is formed by the impregnation portion. ing.

In the masking jig A configured as described above, an operator grips the grip portion 7 by hand and inserts the jig body 1 into the opening c1 of the bumper C of the automobile B during bumper coating. Be fitted by. As a result, the vertical grooves 3, 3, 3 and the horizontal groove 5 of the jig body 1 are fitted to the vertical bars c2, c2, c2 and the horizontal bar c3 of the bumper C, and the masking jig A is opened in the bumper C. It is stably attached to the portion c1 and masks the opening c1.

As described above, in the above-described embodiment, the coating film 11 is formed on the entire surface of the opening fitting portion 9 except the front side of the jig body 1, and a part of the coating material forming the coating film 11 is used as described above. Since the hard layer 13 is formed by impregnating the surface portion of the opening fitting portion 9, the hard layer 13 can prevent the jig body 1 from shrinking due to heat at the time of coating such as baking coating. It is possible to avoid the formation of a gap due to contraction with the opening C1 of C, and it is possible to prolong the life.

Further, when used, a part of the opening fitting portion 9 of the jig body 1 comes into contact with the peripheral surface of the opening c1 of the bumper C, but a part of the opening fitting portion 9 (foam) is a hard layer. Protected by 13 and not scraped off, it is possible to eliminate stains on the coated surface due to the powder of the foam adhered to the coated surface of the bumper C as dust.

In the above embodiment, the coating film 11 and the hard layer 13 are formed on the entire surface of the opening fitting portion 9 of the jig body 1 excluding the front side. It may be covered with the hard layer 13, and the coating film 11 and the hard layer 13 are formed only on the portion of the opening fitting portion 9 that contacts the peripheral surface of the opening c1 of the bumper C. You may do so.

Further, in the above embodiment, the case where the object to be coated is the bumper C of the automobile B has been shown, but the invention is not limited to this, and any object having an opening c1 may be used. Good.

[0020]

[Effect of the device]

 As described above, according to the present invention, a coating film is formed on at least the surface of the opening fitting portion of the jig body, and a part of the paint constituting the coating film is applied to the surface portion of the opening fitting portion. Since the hard layer is formed by impregnating the same with the coating, the surface of the opening fitting part can be protected with a coating film, and the surface part of the opening fitting part can be reinforced by the hard layer. It is possible to prevent the shrinkage due to the above and prolong the life, and at the same time to prevent the foam from being scraped off due to the contact so that the coated surface of the object to be coated can be prevented from being soiled.

[Brief description of drawings]

1 is a cross-sectional view taken along the line I-I of FIG.

FIG. 2 is a perspective view of a masking jig.

FIG. 3 is a perspective view of a bumper of an automobile.

[Explanation of symbols]

 1 Jig body 9 Opening fitting part 11 Coating film 13 Hard layer A Masking jig C Bumper (object to be coated) c1 Opening part

Claims (1)

[Scope of utility model registration request] 1. A masking jig made of foamed resin for fitting a jig main body into an opening of an object to be coated and masking the opening, wherein the jig main body has at least a surface of an opening fitting portion. Is a masking jig, wherein a coating film is formed, and a hard layer is formed by impregnating the surface of the opening fitting portion with a part of the coating material forming the coating film.