JPH06297941A - Manufacture of automobile window device - Google Patents

Abstract

PURPOSE:To provide a manufacturing method of an automobile window device allowing a secondary molded trimming member to be disposed at the peripheral edge of a window glass plate without damaging the window glass plate and also having large adhesive strength. CONSTITUTION:A primary molded trimming member main body 7a for holding a window glass plate is previously formed of resin with foaming property. In the state of the primary molded trimming member main body 7a being disposed in proximity to the peripheral edge of the window glass plate 4, these are disposed in a mold 11. The primary molded trimming member main body 7a is then heated in the mold 11 and foamed so as to form a secondary molded trimming member into desired cross-sectional shape, and the secondary molded trimming member is endlessly bonded to the peripheral edge of the window glass plate 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a window device for an automobile capable of strongly adhering a glass plate for an automobile window to an edging member without damaging it.

[0002]

2. Description of the Related Art A window device for an automobile is a structure for closing an opening of a vehicle body. As an example of the manufacturing method, there is a method in which a plastic casing (rimming member) is integrally fixed to the peripheral edge of the window glass plate by a casting method. As described above, the window device for an automobile in which the edging member is fixed to the peripheral edge of the window glass plate is characterized in that it can be easily mounted from the outside of the vehicle.

[0003]

However, the window glass plate may be warped in a curved shape from the viewpoint of designability or the like, and the dimensional accuracy such as external dimensions and wall thickness may be poor. Therefore, in the conventional casting method, when the window glass plate is placed in the casting mold and the edging member is cast on the periphery thereof, the window glass plate is distorted and damaged. easy.

Therefore, the yield of products is poor and the cost is high. Further, the adhesive force between the peripheral edge of the window glass plate and the edging member is not sufficient. In view of the above conventional problems, the present invention provides a window device for an automobile, in which an edging member can be arranged on the peripheral edge of the window glass plate without damaging the window glass plate and which has a large adhesive force. It is intended to provide a manufacturing method.

[0005]

According to the present invention, a primary molding edging member main body for sandwiching a glass plate for windows is pre-molded with a foaming resin, and the primary molding edging member main body is arranged near the periphery of the window glass plate. Then, these are placed in a mold, and then the primary molding edging member main body is heated in the mold to heat-foam the foamable resin to form the secondary molding edging member into a desired cross-sectional shape, A second aspect of the present invention is a method for manufacturing a window device for an automobile, characterized in that the secondary molding edging member is endlessly bonded to the peripheral edge of a glass plate for automobile (first invention).

In the present invention, as the foaming resin, for example, a foaming agent-containing vinyl chloride resin can be used. Further, as the molding method mainly composed of the primary molding edging member, there are an extrusion molding method, an injection molding method and the like. Further, the foam molding of the secondary molding edging member in the mold is endless, that is, the secondary molding edging member is molded in an annular shape on the peripheral edge of the window glass plate.

The primary molding edging member main body may be elongated. Such a long-sized primary molding edging member main body can be cut to a required length and arranged so as to be arranged close to the peripheral edge of the window glass plate. A silicon mold is used as the molding mold. In addition, there is high frequency heating as a heating means.

As another manufacturing method, a primary molding edging member main body for sandwiching a glass plate for a window is preformed with a foaming resin, and the primary molding edging member main body is disposed close to the peripheral edge of the window glass plate. In the state described above, these are placed in a mold, and then the primary molding edging member main body is heated in the mold to heat-foam the foamable resin to form a secondary molding edging member having a cross-sectional shape having a tongue piece desired. There is a method for manufacturing a window device for an automobile, which is characterized in that the secondary molding edging member is adhered to the peripheral edge of the window glass plate while being molded (2nd invention).

The second invention differs from the first invention in that it is not necessary to form the tongue piece on the secondary molding edging member and to form the endless shape. Others are the same as the first invention.

As another manufacturing method, a primary molded edging member main body having a sandwiching groove for sandwiching a window glass plate is molded with a foaming resin, and then the primary molded edging member main body is sandwiched in the sandwiching groove. The peripheral edge of the window glass plate is temporarily sandwiched via the hot-melt adhesive layer, and then this temporary sandwich is put into a mold and heated, and the foamable resin is heated and foamed to form a secondary molded foamed resin. While molding the edging member,
There is a method of manufacturing a window device for an automobile, which is characterized in that it is adhered to the window glass plate in a sandwiched manner (third embodiment).
invention).

In this method, for example, a vinyl chloride resin containing a foaming agent is used as the foamable resin. Also,
When the peripheral edge of the window glass plate is sandwiched by the hot-melt adhesive in the sandwiching groove of the primary molding edging member main body, the hot-melt adhesive is inserted in the sandwiching groove before or after cutting the primary molding edging member main body. Have been applied. Alternatively, a hot melt adhesive is applied to the peripheral edge of the window glass plate, and then the sandwiching is performed.

Further, as another manufacturing method, a primary molded edging member main body having a sandwiching groove for sandwiching a glass plate for windows is extruded from a foamable resin, and then in the sandwiching groove of the primary molded edging member main body. Then, the peripheral edge of the window glass plate is temporarily clamped through the hot-melt adhesive layer, and then this temporary clamp is put into a silicon mold and subjected to high-frequency heating to heat-foam the foamable resin, and There is a method for manufacturing a window device for automobiles, which comprises molding a molded resin foam edging member and adhering it to the glass plate for windows in a sandwiched manner (fourth invention).

In this method, as described above, the hot melt adhesive is applied to at least one of the holding groove of the primary molding edging member and the peripheral edge of the window glass plate. When molding the secondary molding edging member in the mold, it is preferable to simultaneously form the tongue pieces on the secondary molding edging member.

[0014]

In the first aspect of the present invention, the primary forming edging member main body is formed in advance, and then it is placed in the mold in a state where it is arranged close to the peripheral edge of the window glass plate, and these are heated. To do. As a result, the primary molding edging member main body is foamed to form the secondary molding edging member into a desired shape and is made endless, and this and the window glass plate are bonded.

Therefore, even if the window glass plate is warped or the dimensional accuracy such as the outer dimension and the wall thickness is poor, the secondary molding edging member can be easily molded and adhered to the peripheral edge of the window glass plate. can do. Therefore, no damage such as breakage occurs in the window glass plate as in the conventional cast molding. Moreover, since it is foamed with a foaming resin and adhered to the window glass plate, it has excellent adhesive strength.

Further, in the second invention, as in the first invention, the primary molding edging member main body is placed close to the peripheral edge of the window glass plate and heated in the mold to foam the primary molding edging member main body. A secondary molded edging member having a tongue is formed. Therefore, the tongue piece can be easily arranged on the secondary molding edging member. Further, similar to the first aspect of the invention, the glass plate for windows is not damaged during the molding of the secondary molding edging member, and the adhesive force between the secondary molding edging member and the glass plate for windows is excellent.

Further, in the third aspect of the invention, after the temporary sandwiched product composed of the primary molding edging member main body and the window glass plate is prepared, it is put into a mold and heated.
Therefore, even if the window glass plate is warped or the dimensional accuracy is poor, the distortion force of the window glass plate at the time of molding is absorbed by the primary molding edging member main body. Therefore, when the secondary molding edging member is provided around the window glass sheet, the window glass sheet is not damaged.

Further, therefore, the yield is greatly improved and the cost is reduced as compared with the conventional cast molding method. Further, since the sandwiching groove and the peripheral edge of the window glass plate are bonded by the hot melt adhesive, the adhesive force is large. In addition, a primary molding edging member main body in a non-foaming state is previously molded using a foaming resin, which is temporarily clamped to the peripheral edge of a glass plate for a window, and this is heat-foamed in a silicon mold to form a window. The secondary molding edging member is foam-molded on the peripheral edge of the glass plate for use. Therefore, the secondary molding edging member having a desired cross-sectional shape can be easily molded.

Next, in a fourth aspect of the invention, in the third aspect of the invention, a silicon mold is used and high frequency heating is used for heating. Therefore, even if the window glass plate is warped or the dimensional accuracy is poor, these strains are absorbed by the silicon mold. Therefore, there is no damage to the window glass plate. Moreover, since the foam molding of the edging member and the bonding with the hot melt adhesive are simultaneously performed by the high frequency heating, the productivity is excellent. Further, since high frequency heating is used, the heating operation is easy. In addition, since extrusion molding is used to form the primary molding edging member main body, it is easy to manufacture the primary molding edging member main body.

Further, since the sandwiching groove and the peripheral edge of the window glass plate are bonded by the hot melt adhesive, the adhesive force is large. Therefore, according to the present invention, it is possible to simultaneously bond the window glass plate and the secondary molding edging member without damaging the window glass plate, and to provide a method of manufacturing an automobile window device having a large adhesive force. Can be provided.

[0021]

【Example】

Example 1 An example of the present invention will be described with reference to FIGS.
FIG. 1 is a perspective view of an automobile window device to be obtained by this example, FIG. 2 is an enlarged cross-sectional view of a circle portion in FIG. 1, FIG. 3 is an explanatory view of a mounting position of the automobile window device, and FIG. 4 is a manufacturing method. 5 and 6 are state diagrams of the primary molding edging member main body before molding in the silicon mold, and FIGS. 7 and 8 are explanatory views of the secondary molding foam resin edging member after molding in the silicon mold. is there.

First, referring to FIGS. 1 to 3, an automobile window device 3 for closing a vehicle body opening 2 of an automobile 1 has an adhesive layer of a hot melt adhesive on the periphery of a window glass plate 4 of the opening 2. The endless secondary molded foamed resin edging member 7 is bonded in a sandwiching manner via the spacer 5. In FIG. 2, 7b is a holding part, and 7c is a tongue piece.

Next, referring to FIG.
~ It demonstrates using FIG. 4, in the molding / cutting step A, the extrusion molding machine 8 is used to mold the primary molding edging member main body 7a by using a foaming resin as a material of the primary molding edging member main body, for example, a foaming agent-containing vinyl chloride resin. . The primary molding edging member main body 7a has a holding groove 6 for holding the peripheral edge of the window glass plate 4. Also, A
In the process, after the primary molding edging member main body 7a is cooled by the cooling device 9, it is cut into a required length L by the cutting device 10.

Next, in the adhesive application step B, a hot melt adhesive such as PES140 or PES170 is applied to the inside of the holding groove 6 of the primary molding edging member main body 7a.
(Toagosei Kagaku Kogyo Co., Ltd.) is applied to a coating film thickness of about 10 to 20 μm to form the adhesive layer 5. In addition, in this manufacturing method,
Although not shown, the primary molding edging member main body 7a, after being cooled by the cooling device 9, continuously applies the hot melt adhesive to the sandwiching groove 6 to form the adhesive layer 5, and then forms the adhesive layer 5 with the required length L. It can also be cut into pieces.

In the temporary clamping step C, the clamping groove 6 of the primary molding edging member main body 7a of the required length is provided on the peripheral edge of the window glass plate 4.
Are temporarily clamped via the adhesive layer 5. Next, in the pre-molding step D, the window glass plate 4 and the primary molding edge member main body 7
The temporarily sandwiched object in which a and a are temporarily sandwiched is set in the silicon mold 11.

In the high frequency molding step E, the silicon mold 11 is high frequency molded by the high frequency heating device 12 under molding conditions described later. At this time, the foaming resin of the primary molding edging member main body 7a foams and is molded into the secondary molding foamed resin edging member 7 in the silicon mold 11. Further, at the time of the above-mentioned foaming, both ends of the primary molding edging member main body 7a are joined to each other to be endless.

At this time, the holding groove 6 and the peripheral edge of the window glass plate 4 are adhered by the hot melt adhesive 5. After that, cooling or the like is performed, and the automobile window device 3 shown in FIGS. 1 and 2 is taken out of the silicon mold 11. In FIG. 4, reference numeral 13 is a take-off machine. In addition, the application of the hot melt adhesive in the application step B is performed using a brush,
Use spray or other means.

Further, in the above high frequency molding, FIG.
As shown in FIG. 8, the primary molding edging member body 7a is high-frequency foam-molded in the molding space 11c of the silicon mold 11. The silicon mold 11 is composed of upper and lower molds 11a and 11b, and the primary molding edging member main body 7a and the window glass plate 4 are temporarily sandwiched in the molding space 11c and the space 11d formed by both of them. The temporary sandwiched item is set.

The primary molding edging member main body 7a is foam-aged in the molding space 11c by high-frequency heating.
Will be taken into consideration when deciding. In addition, a portion other than the peripheral edge of the window glass plate 4 is set so as to intervene in a close contact with the space 11d. As the molding conditions for the high frequency heating, a molding temperature of 180 ° C., a molding time of 40 seconds and a cooling time of 120 seconds are suitable. 5 to 8, reference numeral 14 is a joint portion, 14a is a portion to be joined, 7b is a sandwiching portion of the secondary molded foam resin edging member 7, and 7c is a tongue piece formed during foam molding of the secondary molded edging member. is there.

In the window device 3 for an automobile manufactured as described above, the sandwiching groove 6 of the secondary molding foamed resin edging member 7 is formed on the peripheral edge of the window glass plate 4 with the adhesive layer 5 of the hot melt adhesive. It is glued together as a sandwich. Its adhesive strength is strong enough to withstand a window device of an automobile. Further, the secondary molded foamed resin edging member 7 does not deform even at high temperatures.

Further, in the high frequency molding step E, the silicon mold 11 well absorbs the warp of the window glass plate 4 and the strain force due to the variation in dimensional accuracy. Therefore, in foam molding and adhesion in the silicon mold,
It is possible to prevent the window glass plate 4 from being damaged. Therefore, the yield of the window device for automobiles is improved and the cost can be reduced. Further, since high-frequency heating is performed, the heating operation for foam molding and adhesion described above is easy.

Also, the tongue piece 7 is used during the molding of the secondary molding edging member.
c can be formed at the same time. As described above, according to the manufacturing method of this example, the foam molding of the secondary molded foam resin edging member and the bonding with the hot melt adhesive can be performed at the same time without damaging the window glass plate. It is possible to provide a method for manufacturing a window device for an automobile, which is easy to heat and has a large adhesive force. Since the automobile window device 3 of this example is formed as one unit,
It is possible to reduce the number of assembling steps when mounting on a vehicle and easily mount the vehicle body opening 2 of the vehicle 1 from the outside.

Embodiment 2 In this embodiment, the secondary molding edging member is heated by a method of heating the mold itself from the outside instead of high frequency heating. By the above heating, the main body of the primary molding edging member is foamed and foam-molded into a desired cross-sectional shape to form a secondary molding edging member, which is adhered to the peripheral edge of the window glass plate. In addition, both ends of the primary molding edging member are also softened and bonded to form an endless shape. Others are the same as in the first embodiment. Also in this example, the same effect as that of the first embodiment can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of an automobile window device according to a first embodiment.

FIG. 2 is an enlarged cross-sectional view of a circle portion of FIG. 1 in the first embodiment.

FIG. 3 is an explanatory view showing a mounting place of an automobile window device on an automobile in the first embodiment.

FIG. 4 is an explanatory diagram of each step of the manufacturing method according to the first embodiment.

5 is an enlarged view of a circular portion d ₁ in step D of FIG. 4 in the _first embodiment.

FIG. 6 is an enlarged cross-sectional view of the circled portion d ₂ of FIG. 4 in the first embodiment.

FIG. 7 shows the d ₁ just after the high frequency molding in Example 1.
Explanatory drawing of the edging member in FIG.

FIG. 8 is an explanatory view of the d ₂ portion immediately after high-frequency molding in Example 1.

[Explanation of symbols]

 3. ． ． 3. Window device for automobile, ． ． Glass plate for window, 5. ． ． Adhesive layer, 6. ． ． Clamping groove, 7. ． ． Secondary molded foamed resin edging member, 7a. ． ． Mainly for primary molding edging member, 8. ． ． Extruder, 9. ． ． Cooling device, 10. ． ． Cutting device, 11. ． ． Silicon mold, 12. ． ． High frequency heating device, A. ． ． Forming / cutting process, B. ． ． Coating process, C.I. ． ． Temporary clamping process, D. ． ． Pre-molding process, E. ． ． High frequency molding process,

Claims (13)

[Claims] 1. A primary molding edging member main body for sandwiching a glass plate for a window is pre-molded with a foaming resin, and the primary molding edging member main body is arranged in the vicinity of the peripheral edge of the window glass plate, and these are molded. Then, the primary molding edging member main body is heated in the mold to heat and foam the foamable resin to form the secondary molding edging member into a desired cross-sectional shape, and the peripheral edge of the window glass plate. A method for manufacturing an automobile window device, characterized in that the secondary molding edging member is adhered endlessly to. 2. The method for manufacturing an automobile window device according to claim 1, wherein the molding of the primary molding edging member main body is extrusion molding. 3. The method for manufacturing an automobile window device according to claim 1, wherein the foamable resin is a foaming agent-containing vinyl chloride resin. 4. The method for manufacturing a window device for an automobile according to claim 1, wherein the mold is a silicon mold and the heating is high frequency heating. 5. A primary molding edging member main body for sandwiching a glass plate for a window is pre-molded with a foaming resin, and the primary molding edging member main body is disposed in the vicinity of the peripheral edge of the window glass plate, and these are molded. Then, the primary molding edging member main body is heated in the mold to heat and foam the foamable resin to mold the secondary molding edging member into a cross-sectional shape having a desired tongue piece and for a window. A method of manufacturing a window device for an automobile, comprising adhering the secondary molding edging member to a peripheral edge of a glass plate. 6. The method for manufacturing an automobile window device according to claim 5, wherein the molding of the primary molding edging member main body is extrusion molding. 7. The method for manufacturing an automobile window device according to claim 5, wherein the foamable resin is a foaming agent-containing vinyl chloride resin. 8. The method for manufacturing an automobile window device according to claim 5, wherein the mold is a silicon mold and the heating is high frequency heating. 9. A primary molding edging member main body having a holding groove for holding a glass plate for a window is molded from a foaming resin, and then a hot melt adhesive layer is interposed in the holding groove of the primary molding edging member main body. Temporarily clamp the periphery of the window glass plate, and then put the temporary clamp in the mold and heat it.
A method for manufacturing an automobile window device, characterized in that the foamable resin is heat-foamed to form a secondary molded foamed resin edging member, and the rimmed member is adhered to the window glass plate in a sandwiched manner. 10. The automobile window device according to claim 9, wherein the hot melt adhesive is applied to at least one of the holding groove of the primary molding edging member and the peripheral edge of the window glass plate. Production method. 11. The method for manufacturing an automobile window device according to claim 9, wherein a tongue piece is formed on the secondary molded edging member when the secondary molded edging member is molded in the mold. 12. A primary molding edging member main body having a holding groove for holding a glass plate for a window is extruded from a foaming resin, and then a hot melt adhesive layer is formed in the holding groove of the primary molding edging member main body. The peripheral edge of the window glass plate is temporarily clamped through, then the temporary clamp is put into a silicon mold and high-frequency heating is performed to heat and foam the foamable resin to form a secondary molded foamed resin edging member. A method for manufacturing a window device for automobiles, characterized in that it is adhered to the window glass plate in a sandwiched manner. 13. The automobile window device according to claim 12, wherein the hot-melt adhesive is applied to at least one of the holding groove of the primary molding edging member and the peripheral edge of the window glass plate. Production method.