JPH08151238A - Method for fitting molded strip to window glass - Google Patents

Abstract

PURPOSE: To provide a method for fitting a molded strip to a window glass capable of carrying out a molding of the strip in a series of process and a connecting operation at the same time and improving quality stability and cost down. CONSTITUTION: This method for fitting a molded strip to window glass is to feed a molding material in a coextruded state, so that the molding material having a shape holding property can be overlapped on an adhesive, when a periphery of the window glass 1 attached with a nozzle discharging the adhesive for bonding a molded strip to an extruding mold 4 fixed in a solid state and supported by an articulated robot 2 capable of moving in three dimensions passes the extruding mold 4, and mold and fit the molded strip 5 around the periphery of the glass 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for mounting a molding strip on window glass such as front and rear window glass of an automobile.

[0002]

2. Description of the Related Art When assembling a window glass of this kind to a vehicle body, a molding strip formed by extending a lip portion which can come into contact with a window frame portion of a vehicle body from a base portion formed to have a substantially U-shaped cross section so as to cover an end surface of the glass. It is well known that windows are sub-assembled into window glass.

As a conventional technique for directly extruding the molding strip onto the peripheral portion of the window glass, for example, Japanese Patent Laid-Open Nos. 3-193643 and 57-1584.
Some are disclosed in Japanese Patent Publication No. 79 and the like.

The one disclosed in Japanese Patent Application Laid-Open No. 3-193643 is constructed by extruding a molding material such as urethane rubber while guiding the extrusion die along the peripheral edge of the window glass.
The molding strip is attached directly to the window glass over the entire circumference, and the transition part between the extrusion start end and extrusion end of the molding strip is compression molded and the excess part is removed as burr. I have to.

The one disclosed in Japanese Unexamined Patent Publication No. 57-158479 is such that a molding strip formed by extruding a molding material such as polyvinyl chloride (PVC) from an extrusion die is fitted to the peripheral edge of a window glass immediately after molding. After it has been inserted, it is pressed by a pressure roller to integrate the molding strip with the window glass. To ensure the bonded state of the molding strip and the window glass, a primer or hot-melt adhesive on the window glass in advance. Is coated.

[0006]

However, Japanese Unexamined Patent Publication No. Hei.
In the one disclosed in Japanese Patent No. 193643, since the solidification state of the molding material is different between the extrusion start end portion and the extrusion end portion of the transition portion, it is necessary to hold the material in a predetermined shape by compression molding. In addition, since molding materials such as urethane rubber do not have shape retention, post-processing such as curing in a high-temperature furnace is required, which increases equipment costs in addition to material costs (urethane rubber is expensive). There was a problem.

Further, in the one disclosed in Japanese Patent Application Laid-Open No. 57-158479, since it is necessary to perform shape forming by pressure bonding with a roller, in the case of a forming strip requiring an elastic lip, a predetermined strip is required. It is difficult to maintain the lip shape of the above (it adheres to the roller with PVC material etc.), and it is also necessary to perform an adhesive coating treatment separately, and it is also difficult to produce efficiently. There was a point.

The present invention has been made in view of the above circumstances, and the molding strip can be molded and joined at the same time in a series of steps to stabilize the quality and reduce the cost. The purpose is to provide a mounting method.

[0009]

The structure of the present invention for achieving the above object is a method of mounting a molding strip on a window glass by directly molding and mounting the molding strip on the peripheral edge of the window glass by extrusion molding. Then, a nozzle for discharging an adhesive for adhering the molding strip is provided side by side with the extrusion die installed in a fixed state, and the peripheral portion of the window glass supported by the driving means that moves three-dimensionally passes through the extrusion die. At this time, the molding strip having a shape-retaining property is supplied to the adhesive in a co-extruded state so that the molding material can be placed on the adhesive, whereby the molding strip is molded and mounted on the peripheral edge of the window glass.

Further, it is preferable to use polyvinyl chloride as the molding material.

Further, it is preferable to use a thermoplastic material such as natural rubber, synthetic rubber or olefin elastomer as the molding material.

Further, a molding strip is formed on the peripheral portion of the window glass so that the extrusion start position of the molding material and the extrusion end position of the molding material are different, and the molding strip is interposed between the starting position and the ending position. It is preferable that a separate molded strip having substantially the same cross-section as that of the molded strip is mounted to the non-mounting portion of the molded strip in the post-installation step.

Further, it is preferable that the non-mounting portion of the molding strip is one side of the peripheral edge of the window glass.

Further, it is preferable that a separate molding strip is attached in a post-attaching step after cutting the start position and the end position.

Further, it is preferable that the dam is simultaneously extruded from the extrusion die.

Further, it is preferable that an adhesive bead for adhering the window glass is simultaneously extruded from the extrusion die.

[0017]

According to the structure of the present invention, the driving of the extruding die through the peripheral portion of the window glass enables the molding of the molding strip and the bonding operation of the molding strip to the window glass at the same time.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method of mounting a molding strip on a window glass according to the present invention will be described below with reference to the accompanying drawings. 1 is a schematic configuration diagram of a mounting device, FIG. 2 is an enlarged perspective view of an extrusion die, FIG. 3 is a sectional view of a window glass and a molding strip, FIG. 4 is an explanatory diagram of a post-process, and FIG. 5 is a sectional view of a modified example. is there.

As shown in FIG. 1, a window glass 1 such as a windshield of a passenger car is supported at its center by a vacuum chuck method on a hand 3 of an articulated robot 2 as a three-dimensional movable driving means.

Then, by the articulated robot 2,
The peripheral portion of the window glass 1 follows the shape of the window glass 1 and can be passed through the extrusion die 4 having a U shape of an extruder fixed on the floor. That is, the extruder is equipped with a device for heating the molding material to a high temperature as will be described later and is enlarged to a certain extent. Therefore, it is difficult to move the extruder. Therefore, it is necessary to move the window glass 1 side. It has become.

As shown in FIG. 2, the extruder extrudes a molding material having a shape-retaining property, which is made of a thermoplastic material such as polyvinyl chloride heated to a high temperature, natural rubber, synthetic rubber or olefin elastomer. By supplying to mold 4,
The molding strip (weather strip) 5 having the elastic lip 5a on the peripheral edge of the window glass 1 is molded directly, that is, without post-processing such as compression molding.

In addition to the molding material supply port 6 through which the molding material is supplied from a heating supply source (not shown), the extrusion die 4 has an adhesive 7 for bonding the molding strip 5 to the window glass 1.
An adhesive injection port 8 into which (see FIG. 3) is injected is provided,
The molding material and the adhesive 7 are supplied in a coextruded state so that the molding material can be added to the adhesive 7 extruded from the nozzle 9.

In this embodiment, as shown in FIG. 4, the molding strip 5 is directly molded over the three sides of the window glass 1, and then the molding strip 5A is separately molded on the remaining one side. Is attached with adhesive. On this occasion,
The extruding start end and extruding end of the directly molded strip 5 are cut with a cutter to be end-face treated, and joined so as to be continuous with the separately molded strip 5A.

Further, as shown in FIG. 5, the dam 10 can be extruded from the extrusion mold 4 at the same time as the molding material and the adhesive 7, and up to the adhesive bead 11 for joining the window glass 1 to the window frame of the vehicle body. It can be pushed out at the same time.

As described above, according to the mounting method of the present invention, by supplying the molding material having the shape-retaining property and the adhesive 7 to the extrusion die 4 in the co-extrusion state, a series of peripheral portions of the window glass 1 can be obtained. In the process, the molding of the molding strip 5 and the joining work can be performed at the same time, so that the quality can be stabilized and the production efficiency can be improved. In addition, since a molding material having shape retention such as PVC is much cheaper than a molding material having no shape retention such as urethane rubber, there is an advantage that the cost can be reduced.

[0026]

As described above, according to the method of mounting a molding strip on a window glass of the present invention, the molding of the molding strip and the joining work can be simultaneously performed in a series of steps,
The quality can be stabilized and the production efficiency can be improved, and the facility cost can be reduced. There is also an advantage that an inexpensive material such as PVC can be used.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a mounting device for carrying out a mounting method according to the present invention.

FIG. 2 is also an enlarged perspective view of the extrusion die.

FIG. 3 is a sectional view of the window glass and the molding strip.

FIG. 4 is also an explanatory diagram of a subsequent process.

FIG. 5 is a cross-sectional view of a modified example.

[Explanation of symbols]

 1 Window Glass 2 Articulated Robot 4 Extrusion Type 5 Molding Strip 6 Molding Material Supply Port 7 Adhesive 8 Adhesive Injection Port 9 Nozzle

Claims (8)

[Claims] 1. A method of mounting a molding strip on a window glass by directly molding and mounting the molding strip on the peripheral edge of the window glass by extrusion molding, which comprises bonding a molding strip to an extrusion die installed in a fixed state. When a peripheral edge portion of the window glass supported by a driving unit that moves in three dimensions is provided with a nozzle that discharges the agent, the molding material having shape retention property in the extrusion mold when the peripheral edge portion passes through the extrusion mold. A method of mounting a molded strip on a window glass, which comprises molding and mounting the molded strip on the peripheral edge of the window glass by supplying it in a co-extruded state so that it can be placed on an adhesive. 2. The method of mounting a molding strip on a window glass according to claim 1, wherein polyvinyl chloride is used as the molding material. 3. The method of mounting a molding strip on a window glass according to claim 1, wherein a thermoplastic material such as natural rubber, synthetic rubber or olefin elastomer is used as the molding material. 4. A molding strip is formed on a peripheral portion of a window glass so that an extrusion start position of the molding material and an extrusion end position of the molding material are different from each other, and the molding strip is interposed between the starting position and the ending position. 4. A non-attached portion of the molding strip, to which a separate molding strip having substantially the same cross section as that of the molding strip is attached in a post-attaching step.
A method for mounting a molding strip on a window glass according to. 5. The method of mounting a molding strip on a window glass according to claim 4, wherein the non-mounting portion of the molding strip is one side of the peripheral edge of the window glass. 6. The method for mounting a molding strip on a window glass according to claim 4, wherein a separate molding strip is mounted in a post-attaching step after cutting the start position and the end position. 7. The method of mounting a molding strip on a window glass according to claim 1, 2, 3, 4, 5 or 6, wherein a dam is simultaneously extruded from the extrusion die. 8. An adhesive bead for adhering a window glass is simultaneously extruded from the extrusion die.
The method for mounting a molded strip on a window glass according to 6 or 7.