JPH05330334A - Manufacture of windowpane with synthetic resin frame body - Google Patents

Abstract

PURPOSE:To reduce the number of processes for manufacture of a windowpane with a synthetic resin frame body to reduce time and cost and also prevent the pane from being cracked by protruding and forming a synthetic resin frame body and a dam rubber separated from it on the surface of the glass sheet simultaneously. CONSTITUTION:A glass plate 1 is fixed by a glass sheet holding stand 2, and a flow synthetic resin is formed in a specified shape by a die 3. A drive device 4 moves the die 3 to a specified position along the periphery of the glass sheet 1 and also controls the attitude of the die 3. A feed delivery device 5 feeds the flow synthetic resin to the die 3. Then the flow synthetic resin material is protruded and formed into a synthetic resin frame body 6 and dam rubber 7 simultaneously in a specified form and at specified positions along the periphery of the glass sheet 1, and integrated with the glass sheet 1. Here an adhesive to bond to a window opening section is coated on the surface of the glass sheet 1 between the synthetic resin frame body 6 and the dam rubber 7. As the synthetic resin materials, vinyl chloride resin sol, urethane system sealant, or silicone base sealant should be used.

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 glass with a synthetic resin frame suitable for vehicle windows and architectural windows.

[0002]

2. Description of the Related Art In a window glass part for a vehicle or a building, as a method for fixing a single glass plate or a glass with a synthetic resin frame body to an opening, except for some small ones, a sealant glass is used. A method is generally used in which the glass sheet is applied along the peripheral edge of the plate, the sealant is hardened while being pressed against the opening, and the glass plate and the opening are adhesively sealed. In the case of this method, it is necessary to provide a weir called a dam rubber in order to prevent the sealant from being crushed and protruding to the surroundings when the glass plate coated with the sealant is pressed against the opening. As the dam rubber, a square cord having a sponge structure to which an adhesive is attached is usually used, and a step of attaching the dam rubber onto the glass plate surface is required.

In order to omit this step, JP-A-59-59
As disclosed in Japanese Patent No. 187986, a method has been proposed in which a synthetic resin frame body having a sectional shape integrated with a dam rubber is formed on a glass plate, and a sealant is applied on the synthetic resin frame body. Therefore, it is insufficient in that the adhesiveness with the sealant is not always good.

Further, in a method of molding a synthetic resin frame having a sectional shape integrated with a synthetic resin frame and a dam rubber on the peripheral portion of the glass plate and applying a sealant on the synthetic resin frame, the dam rubber is used. Although the attaching step can be omitted, it is essential to satisfy both the characteristics required from the original function of the synthetic resin frame as a synthetic resin material and the adhesiveness with the sealant. Since it is very difficult to satisfy both of these, there is a problem that the functions such as weather resistance originally required for the synthetic resin frame or the adhesiveness must be sacrificed to some extent.

[0005]

In a window glass plate integrally molded with a synthetic resin frame by extrusion along the peripheral edge of the glass plate, when a sealant is applied on the glass plate surface and adhered to the opening. Although high reliability can be obtained with respect to adhesiveness, there is a problem in that it is necessary to attach a dam rubber in a post process in order to prevent the sealant from squeezing out, which requires manpower and is costly.

[0006]

The present invention has been made to solve the above-mentioned problems, and a fluid synthetic resin material is applied to at least one surface of a glass plate by a die along the peripheral portion of the glass plate. After extrusion molding a molded body of a synthetic resin frame of a predetermined shape, by curing, in a method of molding a window glass plate with a synthetic resin frame, in the extrusion molding of the molded body of the synthetic resin frame, Provided is a method for producing a window glass with a synthetic resin frame, which comprises simultaneously molding an independent dam rubber separated from a synthetic resin frame on a glass plate surface.

[0007]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 shows the structure of an apparatus for integrally molding a synthetic resin material having fluidity along a peripheral edge of a glass plate in a predetermined shape at a predetermined position by simultaneously extruding and molding a synthetic resin frame and a dam rubber. FIG. 2 shows an enlarged view of the die portion of the apparatus of FIG.

The apparatus is mainly composed of a glass plate holder 2 for fixing the glass plate 1, a die 3 for molding a flowable synthetic resin into a predetermined shape, and a die 3 along a peripheral portion of the glass plate for a predetermined length. It comprises a driving device 4 for moving to a position and controlling the attitude of the die, and a supply / discharge device 5 for supplying a fluid synthetic resin to the die. As shown in the partially enlarged view of FIG. 2, the synthetic resin frame body and the dam rubber are extruded at predetermined positions on the glass plate surface with a predetermined shape at predetermined intervals to form separate and independent synthetic resin frame bodies. And a synthetic rubber dam rubber can be molded at the same time.

After the synthetic resin frame and the dam rubber and the glass plate are integrally molded by the above-mentioned molding method, the synthetic resin frame is hardened by heating or other means, though it depends on the synthetic resin material used. Manufacture window glass with a body. FIG. 3 shows an example of a partial cross-section of a peripheral portion of a window glass with a synthetic resin frame for a vehicle in which a synthetic resin frame and a dam rubber are simultaneously formed on the peripheral edge of the glass plate by the method of the present invention. That is, this is an example of a structure in which a synthetic resin frame is provided on one surface of a glass plate in this order from the outside, then a glass plate open surface portion, and a dam rubber is arranged on the inside thereof.

FIG. 4 shows an example in which a sealant, which is an adhesive material for a body, is applied to the open surface portion of the glass plate of FIG. Dam rubber plays a role of preventing unnecessary protrusion when the glass plate is pressed against the body of a vehicle such as an automobile to a set position.Because the glass plate and the body are directly adhered by a sealant, the adhesiveness is improved. Very good.

5 and 6 show examples of different shapes of the synthetic resin frame. In the present invention, the temperature at which the fluid synthetic resin is extruded from the die is 5 ° C to 5 ° C.
0 ° C., particularly 10 ° C. to 40 ° C. are particularly preferable. If the temperature is lower than the above temperature, the viscosity of the synthetic resin is excessively increased and a large load is applied to the extrusion device, and it is necessary to keep the temperature at a low temperature in order to maintain the shape before the curing after molding. That is, as the temperature rises, the viscosity decreases correspondingly and it becomes difficult to maintain the shape. On the other hand, if the temperature exceeds the above-mentioned temperature, the synthetic resin will be hardened during extrusion and the extrusion load will be high, and the dimensional accuracy of the molded article will be poor.

Further, since the synthetic resin material can be molded into a predetermined shape on the surface of the glass plate, and at the same time, it is necessary to hold the predetermined shape until it is cured after molding, the viscosity thereof is room temperature and shearing. At a speed of 1 second, 300,000 to 10 million centipoise, especially 6
It is preferably from 0,000 to 3 million centipoise. If the viscosity is less than the above value, the synthetic resin cannot be molded into a predetermined shape, or the predetermined shape cannot be maintained until it is cured after molding, and if the viscosity exceeds the above value, the pressure during extrusion becomes excessive and molding cannot be performed. It becomes impossible and neither is preferable.

As the synthetic resin material used in the present invention, there is used a material which, after extrusion molding, is cured by a synthetic resin itself or a chemical reaction due to absorption of moisture in the air, or a physical change such as a phase change due to heating. Examples of such synthetic resin materials include vinyl chloride resin sols, urethane sealants, and silicone sealants.

In the case of a vinyl chloride resin sol, it can be cured by being extruded on the peripheral edge of the glass plate and then heated and cooled to a temperature of around 180 ° C. Further, in the case of a two-component mixed type urethane sealant or silicone sealant, after mixing, the reaction does not proceed sufficiently and after molding in a fluid state, the mixture is left standing at room temperature or heated to cure as the reaction progresses. .. In the case of a one-component moisture-curable urethane-based or silicone-based sealant, it is cured by curing after molding in air or in an atmosphere where the humidity is adjusted.

In the present invention, the die is accurately moved along the peripheral portion of the glass plate of various shapes, and at the same time, the distance between the die and the glass plate surface and the posture of the die are kept constant, and the die is moved. Precise control of the amount of synthetic resin extruded according to the speed is important for molding a synthetic resin frame and a dam rubber that have good appearance and high dimensional accuracy. Such a highly accurate die driving method is generally performed by moving a die according to a trajectory along a glass plate shape input in advance by using a combination with a multi-axis robot or a glass plate driving device linked with this. Can be achieved.

Further, when the glass plate has a dimensional error or a bending accuracy error, the above mechanism alone is not sufficient, and a mechanism for correcting the locus is required. In the present invention, as a mechanism in such a case, it is also possible to provide a sensor in the die portion to detect the accurate position of the edge of the glass plate, and correct the trajectory or posture of the die that has been input in advance based on the signal. Is. If the error of the glass plate is small, attach the die to the connecting part via a cushion mechanism using springs or gas, and provide a guide on the die to move the guide along the edge of the glass plate. As a result, it is possible to perform good manufacturing by absorbing the error of the glass plate.

It is ideal that the die moves at a constant speed. However, depending on the shape of the glass plate, it is difficult to keep the moving speed constant, for example, at a sharp corner or a bent portion having a small curvature. , There is no choice but to reduce the moving speed. In such a case, the robot mechanism that drives the die and the ejection device for pushing out the synthetic resin material are interlocked with each other to control the ejection amount of the synthetic resin material that matches the moving speed of the die. It is possible to manufacture a synthetic resin frame with high efficiency.

As the structure of the die, both the synthetic resin frame and the dam rubber extruding portion may be provided in a single die as described above, or each die may be an independent die. Further, two types of synthetic resin material extruding devices are provided, and the types of synthetic resin of the synthetic resin frame body and the dam rubber are changed by independently supplying the synthetic resin material to the extrusion portions of the synthetic resin frame body and the dam rubber. You can also

As the glass plate material, in addition to ordinary inorganic glass plates, transparent materials such as polycarbonate and acrylic resin, or so-called organic glass plates obtained by subjecting these to a surface treatment can be used. Further, even when a concealing coating called so-called black ceramic is applied to the peripheral edge of the glass plate, it is possible to extrude and mold the synthetic resin thereon. Further, a primer or an adhesive may be applied on the glass plate surface in order to further improve the adhesive force between the synthetic resin and the glass plate.

[0020]

According to the present invention, the synthetic resin frame and the dam rubber can be integrally molded at the peripheral portion of the glass plate by extrusion molding at the same time, and it is not necessary to install the dam rubber in the conventional post-process. Cost reduction can be achieved by rationalization. In addition, it is possible to use the method that has been proven in the past, such as bonding the opening and the glass plate surface with a sealant.
Highly reliable adhesiveness.

[Brief description of drawings]

FIG. 1 is a schematic view of an entire apparatus for carrying out the method of the present invention.

FIG. 2 is a partially enlarged perspective view of a die of the apparatus shown in FIG.

FIG. 3 is a partial lateral cross-sectional view of a peripheral portion of a window glass with a synthetic resin frame obtained by the method of the present invention.

FIG. 4 is a partial cross-sectional view showing a state in which a sealant is applied to the window glass with a synthetic resin frame shown in FIG.

FIG. 5 is a partial cross-sectional view of the peripheral portion of another window glass with a synthetic resin frame obtained by the method of the present invention.

FIG. 6 is a partial transverse cross-sectional view of a peripheral portion of a window glass with a synthetic resin frame obtained by the method of the present invention.

[Explanation of symbols]

 1: Glass plate 2: Glass plate holding table 3: Die 4: Die driving device 5: Synthetic resin supply / discharge device 6: Synthetic resin frame 7: Dam rubber 8: Adhesive sealant

Claims (4)

[Claims] Claims: 1. A fluid synthetic resin material is extruded from at least one surface of the glass plate along a peripheral edge of the glass plate by a die to form a molded product of a synthetic resin frame body, and then cured. In the method of molding a window glass with a synthetic resin frame, when a molded body of the synthetic resin frame is extruded, a dam rubber portion separated and independent of the synthetic resin frame is simultaneously extruded on the glass plate surface. A method for manufacturing a window glass with a synthetic resin frame, which is characterized. 2. A window with a synthetic resin frame according to claim 1, wherein an adhesive for adhering to the window opening is applied on the glass plate surface between the synthetic resin frame and the dam rubber portion. Glass manufacturing method. 3. The method for manufacturing window glass with a synthetic resin frame according to claim 1, wherein the synthetic resin material is vinyl chloride resin sol. 4. The method of manufacturing window glass with a synthetic resin frame according to claim 1, wherein the synthetic resin material is a urethane type sealant or a silicone type sealant.