KR102234050B1 - Method of manufacturing multi curvature window glass for automobile cid - Google Patents

Abstract

Disclosed is a method for manufacturing multi-curvature window glass for a center information display (CID) of a vehicle. According to the present invention, the method comprises the following steps: placing flat glass in a mold and loading the loaded flat glass to a molding machine; preheating the loaded flat glass to a predetermined temperature in a chamber; forming curved glass by pressing the preheated flat glass with a predetermined pressure; cooling the molded curved glass to a predetermined temperature; and unloading the cooled curved glass. Accordingly, the method is configured to mold multi-curvature window glass for a CID of a vehicle having various multi-curvatures, thereby providing an effect of producing optimized window glass for a curved display. More specifically, since an optimized window glass thickness value and molding temperature for manufacturing multi-curvature window glass and an optimized mold for molding the same are used, thin multi-curvature window glass with appropriate strength and a small defect rate can be manufactured, and errors or defects due to thermal expansion of the multi-curvature window glass can be prevented during a molding process.

Description

Manufacturing method of multi-curvature window glass for automobile CID {METHOD OF MANUFACTURING MULTI CURVATURE WINDOW GLASS FOR AUTOMOBILE CID}

The present invention relates to a method for manufacturing a window glass, and more particularly, to a method for manufacturing a multi-curvature window glass for a vehicle center information display (CID).

A glass is mounted on the front of an existing automobile center information display (CID).

In recent years, the visibility of automobile CIDs has been improved and designs have been implemented in various ways to increase marketability, functionality, and aesthetic value.

Most of automotive CIDs are equipped with flat glass on flat displays.

In recent years, flexible displays are being actively developed, and accordingly, glass for automobile CIDs needs to be developed in shapes having various curvatures.

As of yet, there are no molding processes, numerical values, and optimized molds that are optimized for manufacturing products by freely controlling the curvature of glass for automobile CIDs, or molding windows with multiple curvatures.

Unexamined Patent Publication 10-2016-0073467 Unexamined Patent Publication 10-2019-0098284

An object of the present invention is to provide a method for manufacturing a multi-curvature window glass for a vehicle CID.

A method of manufacturing a multi-curvature window glass for a vehicle CID according to the object of the present invention described above includes the steps of: seating a flat glass on a mold and loading a molding machine; Preheating the loaded flat glass to a predetermined temperature in a chamber; Pressing the preheated flat glass with a predetermined pressure to form a curved glass; Cooling the molded curved glass to a predetermined temperature; It may be configured to include the step of unloading the cooled curved glass.

Here, the step of preheating the loaded flat glass in the chamber to a predetermined temperature may include preheating to 300°C in a first zone in the chamber, preheating to 500°C in a second zone, and 700°C in a third zone. It can be configured to preheat and preheat to 800° C. in the fourth zone.

In addition, the step of pressing the preheated flat glass into a curved glass by pressing with a predetermined pressure may be configured to be formed in a state maintained at 800°C in the fifth zone in the chamber.

And cooling the molded curved glass may include cooling to 700°C in the sixth zone in the chamber, 600°C in the seventh zone, cooling to 400°C in the eighth zone, and 200°C in the ninth zone. It can be configured to cool to °C.

In addition, the step of forming the preheated flat glass into a curved glass by pressing the preheated flat glass with a predetermined pressure may consist of forming to have a thickness of 0.7 mm in consideration of the heat history generated during the molding.

In addition, the step of forming the preheated flat glass into a curved glass by pressing the preheated flat glass with a predetermined pressure includes a first flat portion protruding in all directions to form a curved glass installed on the front side of a horizontal display for a center information display (CID). The first curved portion, the second flat portion, the second curved portion protruding in the rear direction, and the third curved portion protruding in the rear direction may be formed into curved glass connected in this order.

In addition, the step of pressing the preheated flat glass with a predetermined pressure to form a curved glass may be configured to apply a predetermined pressure using an upper mold of a mold comprising an upper mold and a lower mold.

In the step of pressing the preheated flat glass with a predetermined pressure to form a curved glass, the mold may be provided with a pillar having a predetermined height at each corner to prevent the mold from being separated during vertical movement of the mold.

In the step of pressing the preheated flat glass into a curved glass by pressing with a predetermined pressure, the mold may have different glass contact surfaces of the upper and lower molds of the mold to control the surface characteristics of the curved glass. .

In the step of pressing the preheated flat glass into a curved glass by pressing with a predetermined pressure, the mold may be provided with a horizontal margin between the glass and the mold according to the thermal expansion of the glass and the thermal expansion of the mold.

In the step of pressing the preheated flat glass into a curved glass by pressing with a predetermined pressure, the mold may be provided with a bar having a predetermined height to prevent the glass from being pulled down during molding.

According to the above-described method for manufacturing a multi-curvature window glass for an automobile CID, it is configured to mold a multi-curvature window glass for an automobile CID having various multi-curvatures, thereby producing an optimized window glass for a curved display.

More specifically, by using an optimized window glass thickness value and molding temperature for manufacturing a multi-curvature window glass, and an optimized mold for molding the same, it is possible to produce a multi-curvature window glass with an appropriate strength and low defect rate. In addition, there is an effect of preventing errors or defects due to thermal expansion of the multi-curvature window glass during the molding process.

1 is a view showing each step of a method of manufacturing a multi-curvature window glass for a vehicle CID according to an embodiment of the present invention.
2 is a diagram schematically showing temperature control in a molding step according to an embodiment of the present invention.
3 is a view showing the shape of a flat glass according to an embodiment of the present invention.
4 is a view showing the shape of a curved glass according to an embodiment of the present invention.
5 is a view showing the shape of a mold according to an embodiment of the present invention.

In the present invention, various modifications may be made and various embodiments may be provided, and specific embodiments will be illustrated in the drawings and will be described in detail in specific details for carrying out the invention. However, this is not intended to limit the present invention to a specific embodiment, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention. In describing each drawing, similar reference numerals have been used for similar elements.

Terms such as first, second, A, and B may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. The term and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. It should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof does not preclude in advance.

Unless otherwise defined, all terms used herein including technical or scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in the present application. Does not.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing each step of a method of manufacturing a multi-curvature window glass for a vehicle CID according to an embodiment of the present invention. And Figure 2 is a diagram schematically showing the temperature control of the molding step according to an embodiment of the present invention, Figure 3 is a view showing the shape of a flat glass according to an embodiment of the present invention, Figure 4 is the present invention It is a view showing the shape of the curved glass according to an embodiment of, Figure 5 is a view showing the shape of the mold according to an embodiment of the present invention.

First, referring to FIG. 1, a flat glass 10 is mounted on a mold 100 and loaded into a molding machine (S101).

The flat glass 10 is configured in a flat shape as shown in FIG. 3 and may be provided to fit the size of a display for a vehicle CID. The mold 100 may be configured as shown in FIG. 5, and may be configured to mount the flat glass 10 between the upper mold 101 and the lower mold 102.

Next, the flat glass 10 loaded in the chamber is preheated to a predetermined temperature (S102).

It may be configured to preheat the flat glass 10 step by step to a molding temperature of 800°C. Specifically, as shown in Fig. 2, preheating to 300°C in the first zone in the chamber, preheating to 500°C in the second zone, preheating to 700°C in the third zone, and preheating sequentially to 800°C in the fourth zone Can be configured to

Next, the preheated flat glass 10 is pressed with a predetermined pressure to form a curved glass 20 (S103).

Here, it may be configured to be molded in a state maintained at 800° C. in the fifth zone in the chamber.

The curved glass 20 may be molded to have a multi-curvature as shown in FIG. 3. The curved glass 20 includes a first flat portion 21, a first curved portion 22, a second flat portion 23, a second curved portion 24, and a second curved portion from one end in the horizontal direction to the other end in the horizontal direction. It may be composed of three curved portions 25 in order. The first curved portion 22 is configured to protrude in the front direction of the horizontal display, and the second curved portion 24 is configured to protrude in the rear direction of the horizontal display, that is, concave and enter in the horizontal display direction. The curved portion 25 may be configured to protrude in the rear direction of the horizontal display.

Here, the first curved portion 22, the second curved portion 24, and the third curved portion 25 may be configured to have a radius of curvature of R (radius) 150 mm, respectively.

In addition, the multi-curvature window glass can be molded to have a thickness of 0.7 mm after molding in consideration of the heat history generated during molding at 800°C. It fits the curvature and strength, considers visibility, and can apply 0.7 mm as the optimal thickness to reduce defects that occur during thermoforming.

In addition, it may be configured to press the upper mold 101 of the mold 100 composed of the upper mold 101 and the lower mold 102 with a predetermined pressure to form the mold. It can be pressed with the optimum pressure to maintain the thickness of 0.7 mm.

Meanwhile, in the mold 100 of FIG. 5, pillars 101a may be provided at each corner of the upper mold 101. The column 101a may be provided at a predetermined height so that the mold 100, that is, the upper mold 101, is not separated during the vertical movement of the mold 100, that is, the upper mold 101 by pressing and releasing the pressure. I can.

In addition, the shape of the glass contact surface 101b of the upper mold 101 of the mold 100 of FIG. 5 and the shape of the glass contact surface 102b of the lower mold 102 are formed to be different from each other. Each shape or surface characteristic of the front and back sides can be molded as desired by the manufacturer. For example, the rear surface of the curved glass 20 in contact with the vehicle CID display may be formed into a surface shape that is well attached to and coupled to the vehicle CID display. In addition, the front surface of the curved glass 20 may be shaped to have a smooth surface characteristic so as to be aesthetically good and to easily remove dust.

On the other hand, the lower mold 102 of the mold 100 of FIG. 5 may be provided with a horizontal margin 102a between the glass and the mold 100 according to the thermal expansion of the glass and the thermal expansion of the mold.

In addition, the lower mold 102 of the mold 100 of FIG. 5 may be provided with a bar having a predetermined height to prevent the flat glass 10 and the curved glass 20 from flowing down during molding.

Next, the curved glass 20 formed above is cooled to a predetermined temperature (S104).

It may be configured to cool to 700° C. in the sixth zone in the chamber of FIG. 2, to 600° C. in the seventh zone, to 400° C. in the eighth zone, and to 200° C. in the ninth zone.

Next, the cooled curved glass 10 is unloaded (S105).

Although described with reference to the above embodiments, those skilled in the art can understand that various modifications and changes can be made to the present invention without departing from the spirit and scope of the present invention described in the following claims. There will be.

10: flat glass 20: curved glass
21: first flat portion 22: first curved portion
23: second flat portion 24: second curved portion
25: third curved portion 100: mold
101: upper mold 101a: column
101b: glass contact surface 102: lower mold
102a: horizontal margin 102b: glass contact surface
102c: bar

Claims (11)

Seating the flat glass 10 on the mold 100 and loading the molding machine;
Preheating the flat glass 10 loaded in the chamber to a predetermined temperature;
Pressing the preheated flat glass 10 at a predetermined pressure to form a curved glass 20;
Cooling the molded curved glass 20 to a predetermined temperature;
Including the step of unloading the cooled curved glass 10,
Preheating the flat glass 10 loaded in the chamber to a predetermined temperature,
It is configured to preheat to 300°C in the first zone in the chamber, to preheat to 500°C in the second zone, to preheat to 700°C in the third zone, and to preheat to 800°C in the fourth zone,
The step of pressing the preheated flat glass 10 with a predetermined pressure to form a curved glass 20,
It is configured to be molded in a state maintained at 800° C. in a fifth zone in the chamber,
Cooling the molded curved glass 20,
Cooling to 700°C in the sixth zone in the chamber, 600°C in the seventh zone, 400°C in the eighth zone, and 200°C in the ninth zone,
The step of pressing the preheated flat glass 10 with a predetermined pressure to form a curved glass 20,
Considering the heat history generated during molding, it is molded to have a thickness of 0.7 mm,
The step of pressing the preheated flat glass 10 with a predetermined pressure to form a curved glass 20,
A first flat portion 21, a first curved portion 22 protruding in all directions, and a second flat portion 23 to form a curved glass 20 installed on the front side of a horizontal display for a center information display (CID). ), the second curved portion 24 protruding in the rearward direction, and the third curved portion 25 protruding in the rearward direction.
In the step of pressing the preheated flat glass 10 with a predetermined pressure to form a curved glass 20,
The mold 100 is provided with pillars 101a having a predetermined height at each corner to prevent the mold 100 from being separated during the vertical movement of the mold 100,
In the step of pressing the preheated flat glass 10 with a predetermined pressure to form a curved glass 20,
In the mold 100, the glass contact surfaces 101b and 102b of the upper mold 101 and the lower mold 102 of the mold 100 are formed differently to control the surface characteristics of the curved glass 20,
In the step of pressing the preheated flat glass 10 with a predetermined pressure to form a curved glass 20,
The mold 100 is provided with a bar (102c) having a predetermined height to prevent the phenomenon that the flat glass 10 and the curved glass 20 flow down during molding,
The first curved portion 22, the second curved portion 24, and the third curved portion 25 are each configured to have a radius of curvature of 150 mm R (radius),
A method for manufacturing a multi-curvature window glass for automobile CID, characterized in that the front surface of the curved glass 20 is molded to have smooth surface characteristics.
delete delete delete delete delete The method of claim 1,
The step of pressing the preheated flat glass 10 with a predetermined pressure to form a curved glass 20,
A method of manufacturing a multi-curvature window glass for automobile CID, characterized in that it is configured to form by applying a predetermined pressure using the upper mold 101 of the mold 100 consisting of the upper mold 101 and the lower mold 102.
delete delete The method of claim 1,
In the step of pressing the preheated flat glass 10 with a predetermined pressure to form a curved glass 20,
The mold 100 is a multi-curvature for automobile CID, characterized in that a horizontal margin 102a between the flat glass 10 and the curved glass 20 and the mold 100 is provided according to the thermal expansion of the glass and the thermal expansion of the mold. Window glass manufacturing method.
delete

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