JP3269295B2 - How to attach molded strip to window glass - Google Patents

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 molded strips on windowpanes such as front and rear windowpanes of automobiles.

[0002]

2. Description of the Related Art When assembling a window glass of this type to a vehicle body, a molded strip formed by extending a lip portion capable of abutting on a window frame portion of the vehicle body from a base formed in a substantially U-shaped cross section so as to cover the glass end surface. It is well known that is sub-assembled into window glass.

Conventional techniques for directly extruding the molded strip on the periphery of a window glass include, for example, JP-A-3-193643 and JP-A-57-1584.
No. 79 is disclosed.

[0004] Japanese Unexamined Patent Publication (Kokai) No. 3-193364 discloses a method in which a molding material such as urethane rubber is extruded while an extrusion die is guided along the periphery of a window glass.
The mounting of the formed strip to the window glass is performed directly over the entire circumference, and the transition portion between the extruded start end and the extruded end of the formed strip is compression-molded to remove the excess portion with burrs. I have to.

[0005] Japanese Patent Application Laid-Open No. 57-158479 discloses a molding strip formed by extruding a molding material such as polyvinyl chloride (PVC) from an extrusion die, and fitting the molding strip to the periphery of a window glass immediately after molding. After that, the molded strip is integrated with the window glass by pressing with a pressure roller.To ensure the bonding state between the molded strip and the window glass, primer or hot melt adhesive is applied to the window glass in advance. Is coated.

[0006]

However, Japanese Unexamined Patent Publication No.
In the one disclosed in Japanese Patent No. 193643, since the solidified 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 maintain a predetermined shape by compression molding, In addition, since molding materials such as urethane rubber do not have shape retention properties, post-processing is required such as curing in a high-temperature furnace, and equipment costs increase in addition to material costs (urethane rubber is expensive). There was a problem.

Further, in the device disclosed in Japanese Patent Application Laid-Open No. 57-158479, it is necessary to form the shape by pressing with a roller. Is difficult to maintain the lip shape (it adheres to the roller with a PVC material or the like), and it is necessary to separately perform a coating process with an adhesive, and it is also difficult to efficiently produce the lip shape. There was a point.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a molding strip and a joining operation can be performed simultaneously in a series of steps, so that the molding strip can be formed into a window glass to stabilize quality and reduce costs. It is intended to provide a mounting method.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a method of mounting a molded strip on a window glass for directly forming and mounting a molded strip on the periphery of an automotive window glass by extrusion. A nozzle for discharging an adhesive for bonding a molded strip and an adhesive bead for bonding a window glass to an extrusion die installed in a fixed state.
When the peripheral portion of the window glass supported by the driving means that moves three-dimensionally passes through the extrusion die, the molding material having a shape retaining property is attached to the extrusion die. Coextruded so that it can be added to the agent
At the same time, by supplying an adhesive bead , a molding strip is formed and mounted on the periphery of the window glass.

It is preferable that polyvinyl chloride is used as the molding material.

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

A forming strip is formed on the periphery of the window glass so that the extrusion start position of the molding material is different from the extrusion end position of the molding material, and an interposition is provided between the start position and the end position. Preferably, a separate molded strip having substantially the same cross section as the molded strip is attached to a non-mounting portion of the molded strip in a post-attaching step.

Preferably, the non-mounting portion of the molded strip is one side of the periphery of the window glass.

It is preferable that the separately formed strip is mounted in a post-installation step after the start position and the end position are cut.

It is preferable that the dam is simultaneously extruded from the extrusion die.

It is preferable that an adhesive bead for window glass bonding be simultaneously extruded from the extrusion die.

[0017]

According to the structure of the present invention, the extruding die is passed through the periphery of the window glass by the driving means, so that the forming of the formed strip and the joining operation thereof to the window glass are simultaneously performed.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the method for mounting a molded 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 cross-sectional view of a window glass and a forming strip, FIG. 4 is an explanatory diagram of a post-process, and FIG. is there.

As shown in FIG. 1, a window glass 1 such as a front window glass of a passenger car has a central portion supported by a hand 3 of an articulated robot 2 as a three-dimensional movable driving means by a vacuum chuck method.

Then, by the articulated robot 2,
The periphery of the window glass 1 conforms to its shape, and can be passed through a U-shaped extrusion die 4 of an extruder fixed on the floor. That is, since the extruder is provided with an apparatus for heating the molding material to a high temperature as described later and is somewhat large, it is difficult to move the extruder. It has become.

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

The extruding die 4 has an adhesive 7 for joining the forming strip 5 to the window glass 1 in addition to a forming material supply port 6 to which a forming material is supplied from a heating supply source (not shown).
(See FIG. 3) is provided,
The molding material and the adhesive 7 are supplied in a co-extruded 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 formed strip 5 is directly formed over three sides of the window glass 1, and then formed separately on the remaining one side. Is attached with an adhesive. On this occasion,
The extruded start end and extruded end of the directly formed forming strip 5 are cut by a cutter, subjected to an end face treatment, and joined so as to be continuous with the separately formed forming strip 5A.

As shown in FIG. 5, the dam 10 can be extruded simultaneously with the molding material and the adhesive 7 from the extrusion die 4, and up to an adhesive bead 11 for joining the window glass 1 to a window frame of a vehicle body. It can be extruded at the same time.

As described above, according to the mounting method of the present invention, the molding material having shape retention and the adhesive 7 are supplied to the extrusion die 4 in a co-extruded state, so that a series of In the process, the forming and joining of the forming strip 5 can be performed at the same time, so that the quality can be stabilized and the production efficiency can be improved. Further, 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 cost can be reduced.

[0026]

As described above, according to the method for mounting a formed strip on a window glass of the present invention, the forming and joining of the formed strip can be performed simultaneously in a series of steps.
Stability of quality and improvement of production efficiency can be achieved, and equipment cost can be reduced. There is also an advantage that inexpensive materials such as PVC can be used.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a mounting device that performs a mounting method according to the present invention.

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

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

FIG. 4 is an explanatory view of a post-process.

FIG. 5 is a sectional view of a modification.

[Explanation of symbols]

 DESCRIPTION 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 (3)

(57) [Claims] 1. A method for mounting a formed strip on a window glass, wherein the formed strip is directly formed and mounted on a peripheral portion of an automobile window glass by extrusion molding. Nozzle that discharges adhesive and discharges bonding beads for window glass bonding
When a peripheral portion of the window glass supported by a driving means that moves three-dimensionally passes through the extrusion die, a molding material having a shape retaining property in the extrusion die is provided with the adhesive. same and supplies the coextruded state to allow plus the
A method of mounting a formed strip on a window glass, wherein a formed strip is formed and mounted on a peripheral portion of the window glass by occasionally supplying an adhesive bead . 2. A forming strip is formed on a peripheral portion of a window glass such that an extrusion start position of the molding material is different from an extrusion end position of the molding material, and an interposition is provided between the start position and the end position. wherein the non-mounting portion of the molding strip, method of mounting molding strips into glazing according to claim 1 comprising mounting at the rear with steps a separate molding strips of the forming strips substantially the same cross section. 3. The method of mounting a formed strip on a window glass according to claim 2 , wherein a separate formed strip is mounted in a post-attaching step after cutting the start position and the end position.