KR102111692B1 - Apparatus for manufacturing 3d glass and method for manufacturing 3d glass - Google Patents

Abstract

The three-dimensional glass manufacturing apparatus is a molded part for forming a glass substrate using a mold, and adjacent to the molded part, taking out the glass substrate molded from the mold, mounting another glass substrate on the mold, and forming the molded glass substrate , Disassembly and assembly including the mold, the vision unit to check the state of each of the other glass substrate.

Description

Three-dimensional glass manufacturing apparatus and three-dimensional glass manufacturing method {APPARATUS FOR MANUFACTURING 3D GLASS AND METHOD FOR MANUFACTURING 3D GLASS}

The present invention relates to a three-dimensional glass manufacturing apparatus and a three-dimensional glass manufacturing method, and more particularly, to a three-dimensional glass manufacturing apparatus and a three-dimensional glass manufacturing method for manufacturing a three-dimensional glass substrate used as a window of the display.

As a method for manufacturing a window of a display, a synthetic resin was conventionally manufactured by injection molding.

Recently, with the advent of the touch panel, glass rather than synthetic resin has begun to be used as a display window. In particular, a three-dimensional glass substrate having a curved surface shape used as a window for aesthetic characteristics has a problem in that it is difficult to manufacture since it is formed by thermally deforming a flat glass substrate according to a desired curved surface shape.

One embodiment of the present invention is to solve the above-described problems, and is intended to provide a three-dimensional glass manufacturing apparatus and a three-dimensional glass manufacturing method with improved manufacturing reliability while simultaneously manufacturing a three-dimensional glass substrate.

The first aspect of the present invention for achieving the above-described technical problem is a molding part for forming a glass substrate by using a mold, and adjacent to the molding part, the glass substrate molded from the mold is taken out and another glass is placed in the mold. Provided is a three-dimensional glass manufacturing apparatus including a disassembled and assembled unit that mounts a substrate and includes a vision unit for confirming states of the molded glass substrate, the mold, and the other glass substrates.

The molding unit, the heating unit for heating the mold and the glass substrate to a molding temperature, adjacent to the heating unit, press unit for pressing the mold to mold the glass substrate, and adjacent to the press unit, the mold And a slow cooling portion gradually cooling the molded glass substrate.

The molding unit may further include a quenching unit adjacent to the slow cooling unit and rapidly cooling the mold and the molded glass substrate.

At least one of the heating part, the slow cooling part, and the rapid cooling part may be a plurality.

The molding part may further include a mold carrying part adjacent to the heating part and carrying the mold.

A mold loading part adjacent to the mold carrying part and loading the mold may be further included.

The temperature of the mold carrying part may be 350 ° C to 400 ° C.

The temperature of the heating section is 500 ° C to 800 ° C, and the temperature of the press section may be the same as the temperature of the heating section.

The temperature of the slow cooling part may be 50 ° C to 150 ° C lower than the temperature of the heating part and the press part.

The temperature of the quench unit may be 350 ° C to 400 ° C.

The disassembly and assembly unit is placed between the material replacement unit and the vision unit, which takes out the molded glass substrate from the mold and mounts the other glass to the mold, and preheats the other glass substrate. It further includes a preheating unit, and the vision unit may be adjacent to the preheating unit.

The disassembly and assembly unit may further include a carrying-in waiting unit that is adjacent to the material replacement unit and waits before the mold having the other glass is loaded into the molding unit.

The disassembly and assembly part may further include a take-out cooling part that is adjacent to the material replacement part and cools and removes the mold.

A neighboring portion of the vision unit, a material loading unit for loading the other glass substrate, and a neighboring portion of the vision unit, and a molded product loading unit for loading the molded glass substrate may be further included.

In addition, the second aspect of the present invention is a step of forming a glass substrate using a mold, the step of taking out the molded glass substrate from the mold and mounting another glass substrate on the mold, and the molded glass substrate and the mold , It provides a three-dimensional glass manufacturing method comprising the step of confirming the state of each of the other glass substrate.

According to one of the some embodiments of the above-described problem solving means of the present invention, a three-dimensional glass manufacturing apparatus and a three-dimensional glass manufacturing method having improved manufacturing reliability while simultaneously manufacturing a three-dimensional glass substrate are provided.

1 is a view showing a three-dimensional glass manufacturing apparatus according to a first embodiment of the present invention.
2 is a flowchart illustrating a three-dimensional glass manufacturing method according to a second embodiment of the present invention.

Hereinafter, various embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains can easily practice. The present invention can be implemented in many different forms and is not limited to the embodiments described herein.

In order to clearly describe the present invention, parts not related to the description are omitted.

In addition, since the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of description, the present invention is not necessarily limited to those illustrated.

Also, in the specification, when a part “includes” a certain component, this means that other components may be further included instead of excluding other components, unless otherwise stated.

Hereinafter, a three-dimensional glass manufacturing apparatus according to a first embodiment of the present invention will be described with reference to FIG. 1.

1 is a view showing a three-dimensional glass manufacturing apparatus according to a first embodiment of the present invention.

As shown in FIG. 1, the molded part 100, the disassembled and assembled part 200, and the loading part 300 according to the first embodiment of the present invention are included. In addition, the mold and the glass substrate mounted on the mold may be moved between the forming part 100, the disassembly part 200, and the loading part 300 by moving means such as a belt conveyor.

The molding unit 100 carries in and out a mold equipped with a glass substrate, and molds the glass substrate using a mold equipped with a glass substrate. That is, the molding unit 100 forms a flat glass substrate into a three-dimensional glass substrate using a mold.

The molding part 100 includes a mold carrying part 110, a heating part 120, a pressing part 130, a slow cooling part 140, a rapid cooling part 160, and a mold carrying part 170.

The mold carrying part 110 is adjacent to the heating part 120 and carries a mold on which a flat glass substrate is mounted into the molding part 100. When the mold is brought into the molding unit 100 from the outside, damage to the mold or the glass substrate may occur due to a temperature difference between the inside and the outside of the molding unit 100. To suppress this, the mold bringing-in part 110 may preheat the mold or the glass substrate. The preheating temperature of the mold introduction portion may be about 350 ° C to about 400 ° C, and preferably 350 ° C.

The heating unit 120 heats the mold and the flat glass substrate to a molding temperature to a temperature at which the flat glass substrate mounted on the mold is molded. The temperature of the heating unit 120 may be about 500 ℃ to about 800 ℃.

In addition, in the first embodiment of the present invention, a plurality of heating units 120 may be used to gradually heat the mold and the glass substrate. Each of the plurality of heating units 120 may have a different temperature. The first embodiment of the present invention includes a first heating unit 121 and a second heating unit 123, and the temperature of the second heating unit 123 may be higher than the first heating unit 121.

The press unit 130 is adjacent to the heating unit 120 and presses the mold to form a flat glass substrate heated from the heating unit 120 to a molding temperature into a three-dimensional glass substrate corresponding to the three-dimensional shape of the mold. The press unit 130 maintains a temperature in the same or similar range as the heating unit 120 so that the glass substrate is molded.

That is, the press unit 130 presses at least one of the upper mold and the lower mold to form a flat glass substrate disposed between the upper mold and the lower mold to form a curved glass substrate. Accordingly, a curved portion may be formed at an end or central region of the curved glass substrate.

Each of the mold carrying part 110, the heating part 120, and the pressing part 130 according to the first embodiment of the present invention may include any heating means for achieving the above-mentioned temperature, and the heating means is an example. It can be a heater or a heating wire.

In addition, the pressure applied to the glass substrate in the press unit 130 may be 0.2 kN to 5 kN.

In the press unit 130 according to the first embodiment of the present invention, heat generated from the heater, including the heater, is transmitted to the glass substrate through the upper mold and the lower mold, and the press unit 130 presses the glass substrate. Overheating occurs simultaneously.

The temperature of the first heating unit 121 may be higher than that of the mold carrying unit 110, and the temperature of the second heating unit 123 may be higher than that of the first heating unit 121. That is, each temperature is gradually increased in the order of the mold carrying part 110, the first heating part 121, and the second heating part 123. Meanwhile, the press unit 130 is maintained at the same or similar temperature as the second heating unit 123.

The slow cooling unit 140 is adjacent to the press unit 130 and cools the curved three-dimensional glass substrate formed by the press unit 130. The slow cooling unit 140 may be a plurality in order to gradually cool the molded three-dimensional glass substrate without damage, and the plurality of slow cooling units 140 each have a different temperature. The first embodiment of the present invention includes a first slow cooling unit 141 and a second slow cooling unit 143, and the temperature of the second slow cooling unit 143 is lower than the temperature of the first slow cooling unit 141.

The temperature of the slow cooling unit 140 may be about 50 ° C. to about 150 ° C. lower than the temperature of the heating unit 120 and the press unit 130, whereby the molded three-dimensional glass substrate is damaged or destroyed by sudden temperature changes. It is prevented.

The slow cooling unit 140 continuously applies pressure to the molded three-dimensional glass substrate, thereby preventing the shrinking behavior and deformation of the molded glass substrate to maintain the shape of the three-dimensional glass substrate.

The quench unit 160 is adjacent to the slow cooling unit 140 and cools the molded three-dimensional glass substrate. The temperature of the rapid cooling unit 160 is lower than the temperature of the slow cooling unit 140 and may be about 350 ° C to about 400 ° C. The quench unit 160 may be about 400 ° C.

The quench unit 160 may be a plurality in order to gradually quench the glass substrate being cooled, and the plurality of quench units 160 have different temperatures. The first embodiment of the present invention includes a first quenching section 161 and a second quenching section 163, and the temperature of the first quenching section 161 is higher than the temperature of the second quenching section 163.

The temperature gradually decreases from the pressing unit 130 to the slow cooling unit 140 and the rapid cooling unit 160. This prevents the molded three-dimensional glass substrate from being damaged by a sudden temperature.

The three-dimensional glass substrate and the mold cooled through the quench section 160 are transferred from the forming section 100 to the disassembly and assembly section 200 through the mold taking-out section 170.

At this time, the temperature carried out from the forming unit 100 is about 350 ° C. While the mold having a large latent heat effect maintains the heating state, the three-dimensional glass substrate mounted on the mold and molded is deformed or cracked due to the instantaneous surface quenching while contacting the cold air outside. Can be. For the purpose of preventing such defects, the temperature is lowered gradually or stepwise as described above.

In addition, the mold transferred from the molding unit 100 is preferably such that the temperature or pressure of the upper mold and the lower mold are in the same condition, and for this purpose, a separate heating device, a cooling device, and a pressing device are provided for each position. can do.

Each of the above-described configurations is divided into separate regions, and the temperature conditions are set differently for each divided region to be configured to be heated or cooled while forming a stepped or gradual increase / decrease temperature graph.

The disassembly and assembly part 200 carries out the three-dimensional glass substrate molded in the molding part 100 to the outside, and mounts another flat glass substrate to the mold.

The disassembly and assembly part 200 includes a carry-out part 210, a material replacement part 230, a carry-on part 250, a carry-out cooling part 270, a preheating part 280, and a vision part 290.

The carrying-out unit 210 carries a mold and a three-dimensional glass substrate from the molding unit 100, and maintains about 300 ° C to 350 ° C to prevent destruction of the three-dimensional glass substrate.

The material replacement unit 230 carries the molded three-dimensional glass substrate to the outside, particularly the molded product loading unit 350, and mounts another flat glass substrate, which is a new flat glass substrate, for the mold from which the three-dimensional glass substrate is exported. At this time, the flat glass substrate to be brought in may be carried into the material replacement part 230 from the material loading part 330 through the vision part 290 and the preheating part 280. Each of the material loading part 330 connected to the material replacement part 230 and the molded product loading part 350 has a temperature of about 200 ° C to 350 ° C to prevent damage to the three-dimensional glass substrate and the flat glass substrate according to the rapid change in temperature. The three-dimensional glass substrate and the flat glass substrate are brought in or out.

In addition, the material replacement part 230 may include a cleaning part that cleans the mold, and the cleaning part may clean the surface of the mold when the three-dimensional glass substrate is removed from the mold.

The carry-in standby unit 250 is adjacent to the material replacement unit 230, and waits for the mold having the new flat glass substrate not formed in the material replacement unit 230 to be brought back into the molding unit 100. That is, the carrying-in waiting unit 250 waits before the mold having the other flat glass substrate is loaded into the forming unit 100.

The export cooling unit 270 is adjacent to the material replacement unit 230, and when the mold is replaced with another mold or the manufacturing of the three-dimensional glass substrate is finished, the mold is cooled and then discharged. The exported mold may be loaded in the mold loading unit 310. When the mold is discharged from the export cooling unit 270 to the mold loading unit 310, it is carried out at a temperature of about 200 ° C to 350 ° C.

The preheating part 280 is located between the material replacement part 230 and the vision part 290, and another flat glass substrate and material replacement part 230 carried from the material loading part 330 to the material replacement part 230 Preheat each of the three-dimensional glass substrates carried out from to the molded article loading unit 350. The preheating unit 280 has a temperature of about 200 ° C to 350 ° C, and thus, it is suppressed that the three-dimensional glass substrate and the flat glass substrate are damaged according to a rapid temperature change.

The vision unit 290 is adjacent to the preheating unit 280, and includes an imaging unit such as a CCD to identify each other flat glass substrate, molded three-dimensional glass substrate, and mold. In detail, the vision unit 290 checks the state of the molded three-dimensional glass substrate that is carried out from the material replacement unit 230 to the molded product loading unit 350 through the preheating unit 280, and whether the three-dimensional glass substrate is defective is normal Cognitive discrimination. At this time, when the three-dimensional glass substrate is defective, the vision unit 290 checks the state of the mold to determine whether the mold is defective or normal. In addition, the vision unit 290 checks the state of another flat glass substrate carried from the material loading unit 330 and determines whether the flat glass substrate is defective or normal.

That is, the vision unit 290 checks the state of each of a molded product, a three-dimensional glass substrate, a mold, and a flat glass substrate, which is a material. It is loaded into the defective product loading unit (not shown), and the defective mold is taken out from the disassembled assembly unit 200 through the export cooling unit 270, and the defective flat glass substrate is not carried into the disassembled assembly unit 200.

The molding unit 100 and the disassembly and assembly unit 200 may maintain constant conditions such as temperature and pressure described above, and may be charged with separate nitrogen to prevent damage due to oxidation or the like.

The loading part 300 includes a mold loading part 310, a material loading part 330, and a molded product loading part 350.

The mold loading unit 310 loads the mold adjacent to the mold carrying unit 110, and loads the mold into the molding unit 100 or loads the mold that is taken out from the disassembly and assembly unit 200. The mold loading part 310 may maintain a temperature of about 200 ° C to 350 ° C to prevent deformation or damage of the mold in the process of carrying in or out.

The material loading part 330 is adjacent to the vision part 290 and is connected to the material replacement part 230 of the disassembly and assembly part 200 to another plane which is a material that is brought into the mold located in the material replacement part 230. The glass substrate is loaded. The material loading unit 330 may further include an inspection unit for inspecting defects and the like in order to form a glass substrate without defects.

In addition, in order to prevent deformation or damage of the glass substrate in the process of loading the glass substrate, the material loading unit 330 may maintain a temperature of about 200 ° C to 350 ° C.

The molded product loading unit 350 is adjacent to the vision unit 290 and is connected to the material replacement unit 230 of the disassembly and assembly unit 200 to load a molded glass substrate that is a molded product taken out of the mold. The molded product loading unit 350 may further include an inspection unit for inspecting a defect or the like of the molded glass substrate. In addition, the molded article loading unit 350 may maintain a temperature of about 200 ° C to 350 ° C to prevent deformation or damage of the three-dimensional glass substrate during the process of carrying out the molded product.

As described above, the three-dimensional glass manufacturing apparatus according to the first embodiment of the present invention includes a vision unit 290 to check the state of each of a molded glass substrate, a mold, and a flat glass substrate as a molded product during the three-dimensional glass manufacturing process. Since the defects of each of the three-dimensional glass substrate, the mold, and the flat glass substrate can be confirmed, manufacturing reliability of manufacturing the three-dimensional glass substrate is improved.

In addition, the three-dimensional glass manufacturing apparatus according to the first embodiment of the present invention, by including the molding unit 100 and the disassembled assembly unit 200, it is possible to easily manufacture a three-dimensional glass substrate from a flat glass substrate using a mold.

Hereinafter, a three-dimensional glass manufacturing method according to a second embodiment of the present invention will be described with reference to FIG. 2. The three-dimensional glass manufacturing method according to the second embodiment of the present invention can be performed using the three-dimensional glass manufacturing apparatus according to the first embodiment of the present invention described above.

2 is a flowchart illustrating a three-dimensional glass manufacturing method according to a second embodiment of the present invention.

2, first, a three-dimensional glass substrate is molded using a mold (S100).

Specifically, first, a mold on which a flat glass substrate is mounted is brought into the forming section chamber. In order to prevent damage to the flat glass substrate and the mold to be brought in, the temperature of the step of being brought into the forming chamber is about 200 ° C to about 350 ° C, preferably gradually increasing from about 200 ° C to about 350 ° C.

Next, the loaded mold and the flat glass substrate are preheated. The temperature of the preheating step is from about 350 ° C to about 400 ° C. The preheating step may be divided into a plurality of steps in order to gradually preheat, as an example, after performing the first preheating at 350 ° C, and then performing the second preheating at 400 ° C.

Next, the preheated mold is heated to a temperature at which the flat glass substrate can be molded. The temperature of the heating step is from about 500 ° C to about 800 ° C. The step of heating may be divided into a plurality of steps in order to gradually heat, for example, after performing the first heating at 550 ° C, the second heating may be performed at 750 ° C.

Next, the heated flat mold is pressed to press the heated flat glass substrate to form a three-dimensional glass substrate. The temperature of the step of forming the glass substrate may be the same or similar to the temperature of the step of heating. At this time, the pressure of the molding step may be about 0.2kN to about 5kN.

Next, the molded three-dimensional glass substrate is cooled. In order to prevent the three-dimensional glass substrate from being damaged by a sudden temperature change in the cooling step, the temperature of the cooling step is gradually reduced from a temperature of about 50 ° C to about 150 ° C lower than the temperature of the heating step. Preferably, it can be divided into a plurality of stages and cooled.

In the cooling step, the second embodiment of the present invention may include slow cooling and rapid cooling, and each slow cooling and rapid cooling may be divided into a plurality of stages. The slow and quench stages, which are divided into a plurality of stages, gradually or stepwisely decrease in temperature, and finally to about 400 ° C.

A three-dimensional glass substrate is molded using a mold by the above-described process.

Next, the molded three-dimensional glass substrate is taken out from the mold, and another flat glass substrate is mounted on the mold (S200).

Specifically, first, the molded three-dimensional glass substrate and the mold are taken out from the molding chamber. The molded glass substrate is loaded into the molded product loading portion from the mold that is taken out, and another flat glass substrate transferred from the material loading portion is mounted on the mold. The mold equipped with another new flat glass substrate is brought back into the forming chamber.

In order to prevent damage and destruction of the mold, the other planar glass substrate and the molded three-dimensional glass substrate in the process of carrying in and out, the carrying in and out may be carried out at a temperature of about 200 ° C to 350 ° C.

Next, check the state of each of the molded three-dimensional glass substrate, mold, and other flat glass substrate (S300).

Specifically, the state of each of the other flat glass substrate, the molded three-dimensional glass substrate and the mold is checked using an imaging unit such as a CCD. The state of the molded three-dimensional glass substrate carried out from the material replacement unit to the molded product loading unit is checked through the imaging unit of the vision unit, and it is determined whether the three-dimensional glass substrate is defective or normal.

At this time, if the three-dimensional glass substrate is defective, the vision unit determines whether the mold is defective or normal by checking the state of the mold. In addition, the vision unit checks the state of another flat glass substrate carried from the material loading unit, and determines whether the flat glass substrate is defective or normal.

That is, the state of each molded glass substrate, mold, and flat glass substrate, which is a molded product, is checked using a vision unit. Loaded, the bad mold is taken out of the disassembled assembly through the export cooling unit, and the defective flat glass substrate is not carried into the disassembled assembly.

As described above, in the three-dimensional glass manufacturing method according to the second embodiment of the present invention, defects in each of the three-dimensional glass substrate, the mold, and the flat glass substrate are confirmed by checking the state of each of the molded three-dimensional glass substrate, the mold, and the other flat glass substrate. Since it can be confirmed, manufacturing reliability for manufacturing a three-dimensional glass substrate is improved.

In addition, in the three-dimensional glass manufacturing method according to the second embodiment of the present invention, a three-dimensional glass substrate can be easily manufactured from a flat glass substrate by using a mold in a stepwise temperature rise and temperature drop atmosphere.

Although the present invention has been described through preferred embodiments as described above, the present invention is not limited to this, and the present invention shows that various modifications and variations are possible without departing from the concept and scope of the following claims. Those in the field of technology to which they belong will readily understand.

Molding part 100, vision part 290, disassembly and assembly part 200

Claims (15)

A molding unit for molding a glass substrate using a mold; And
Neighboring the molding portion, including the vision portion for taking out the glass substrate molded from the mold, mounting another glass substrate on the mold, and checking the state of each of the molded glass substrate, the mold, and the other glass substrate Disassembly and assembly
Including,
The molding unit,
A heating unit for heating the mold and the glass substrate to a molding temperature;
A press unit adjacent to the heating unit and forming the glass substrate by pressing the mold; And
A slow cooling portion adjacent to the press portion and gradually cooling the mold and the molded glass substrate.
Further comprising,
The disassembly and assembly unit,
A material replacement unit for taking out the molded glass substrate from the mold and mounting the other glass on the mold; And
A preheating part positioned between the material replacement part and the vision part and preheating the other glass substrate.
Further comprising,
The vision unit is adjacent to the preheating unit,
The temperature of the disassembly and assembly unit is a three-dimensional glass manufacturing apparatus of 200 ℃ to 350 ℃. delete In claim 1,
The molding unit, the three-dimensional glass manufacturing apparatus adjacent to the slow cooling portion further includes a rapid cooling portion for rapidly cooling the mold and the molded glass substrate. In claim 3,
At least one of the heating unit, the slow cooling unit, and the rapid cooling unit is a three-dimensional glass manufacturing apparatus. In claim 3,
The molding unit, the three-dimensional glass manufacturing apparatus adjacent to the heating unit further comprises a mold carrying portion for carrying the mold. In claim 5,
The three-dimensional glass manufacturing apparatus adjacent to the mold carrying portion, further comprising a mold loading portion for loading the mold. In claim 5,
The temperature of the mold carrying portion is 350 ℃ to 400 ℃ three-dimensional glass manufacturing apparatus. In claim 7,
The temperature of the heating section is 500 ° C to 800 ° C, and the temperature of the press section is the same as that of the heating section. In claim 8,
The temperature of the slow cooling unit is 50 ° C to 150 ° C lower than the temperature of the heating unit and the press unit manufacturing apparatus. In claim 9,
The temperature of the quench unit is 350 ℃ to 400 ℃ three-dimensional glass manufacturing apparatus. delete In claim 1,
The disassembly and assembly unit, the three-dimensional glass manufacturing apparatus adjacent to the material replacement unit further comprises a standby unit for waiting before the other glass mounted mold is brought into the molding unit. In claim 1,
The disassembly and assembly unit, the three-dimensional glass manufacturing apparatus adjacent to the material replacement unit further comprises a cooling unit for cooling the mold to take out. In claim 1,
A material loading part adjacent to the vision part and loading the other glass substrate; And
A molded article loading unit adjacent to the vision unit and loading the molded glass substrate
Three-dimensional glass manufacturing apparatus further comprising. Forming a glass substrate using a mold;
Taking out the molded glass substrate from the mold and mounting another glass substrate on the mold; And
Checking the state of each of the molded glass substrate, the mold, and the other glass substrate
Including,
The temperature of the step of taking out the molded glass substrate from the mold and mounting another glass substrate on the mold, and checking the state of each of the molded glass substrate, the mold, and the other glass substrate are 200 ° C to 350 ° C. The manufacturing method of three-dimensional glass which is ℃.

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