KR20170000466A - Apparatus for thermoforming glass and method for thermoforming the same - Google Patents

Apparatus for thermoforming glass and method for thermoforming the same Download PDF

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Publication number
KR20170000466A
KR20170000466A KR1020150089344A KR20150089344A KR20170000466A KR 20170000466 A KR20170000466 A KR 20170000466A KR 1020150089344 A KR1020150089344 A KR 1020150089344A KR 20150089344 A KR20150089344 A KR 20150089344A KR 20170000466 A KR20170000466 A KR 20170000466A
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KR
South Korea
Prior art keywords
glass
jig
temperature
upper jig
axis
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KR1020150089344A
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Korean (ko)
Inventor
윤동현
김봉연
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주식회사 필옵틱스
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Priority to KR1020150089344A priority Critical patent/KR20170000466A/en
Publication of KR20170000466A publication Critical patent/KR20170000466A/en

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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/02—Re-forming glass sheets
    • C03B23/023—Re-forming glass sheets by bending
    • C03B23/0235—Re-forming glass sheets by bending involving applying local or additional heating, cooling or insulating means
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/02—Re-forming glass sheets
    • C03B23/023—Re-forming glass sheets by bending
    • C03B23/03—Re-forming glass sheets by bending by press-bending between shaping moulds
    • C03B23/0307—Press-bending involving applying local or additional heating, cooling or insulating means

Abstract

The present invention relates to a glass molding apparatus and a glass molding method and, more particularly, to a glass molding apparatus for obtaining different shapes by glass molding and a method for operating the apparatus. An embodiment of the present invention includes: a lower jig as a glass mounting holder; a lamp housing separated from and facing the lower jig and provided with a plurality of lamps emitting light toward the lower jig; a laser irradiator emitting laser toward a surface of glass mounted on the lower jig; a temperature measurement unit measuring the temperature of a glass molding line preset as a molding target line; an upper jig as a pressing body positioned between the lower jig and the lamp housing and coming into close contact with the glass mounted on the lower jig to deform the glass molding line or separated from the glass after molding completion; upper jig moving means for moving the upper jig so that the upper jig can be pressed in close contact with the glass or can be separated from the glass; and a control unit heating the glass until a preset preheating temperature is reached by driving the lamp after the glass is mounted on the lower jig and then performing laser irradiation by driving the laser irradiator until the molding line is given a preset softening point temperature and performing control such that the glass molding line is pressed by moving the upper jig by using the upper jig moving means once the molding line reaches the softening point temperature.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a glass molding apparatus and a molding method,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass molding apparatus and a molding method, and more particularly, to a glass molding apparatus and a method of operating the glass molding apparatus.

Glass thermoforming refers to a process in which a glass is heated to a softening point temperature (softening point temperature) and the tempered glass is transformed into a desired shape. For example, in the case of a smart phone, the edge of the tempered glass provided on the front can be bent and formed, which is curved and thermoformed to bend.

1, the glass is positioned between the upper jig 100 and the lower jig 200 and the heat is transferred through the heater embedded in the upper jig 100 and the lower jig 200, respectively, And the glass is heated to a temperature near the softening point temperature of 900 占 폚. Thereafter, when the upper jig 100 placed on the surface of the glass is pressed in contact with the edge of the glass, the edge of the tempered glass is maintained to be bent as shown in Fig.

However, in the conventional thermoforming method for glass, since the entire glass must be heated to a softening point temperature of about 900 DEG C by using a heater, there is a problem of inefficient use of the heat source of the heater. Further, since the entire glass is heated at once, there is a problem that distortion of the glass occurs. In addition, since the entire glass must be heated, the manufacturing cost is increased and the manufacturing time is increased.

Korean Patent Publication No. 10-2015-0042619

An object of the present invention is to provide an apparatus and a method for forming glass by providing strain energy to a glass by using means other than a heater. The technical problem of the present invention is to prevent the distortion of the glass during molding.

An embodiment of the present invention is a lower jig which is a cradle on which a glass is mounted; A lamp housing having at least one lamp opposed to the lower jig to emit light toward the lower jig; A laser irradiator for irradiating a laser toward the surface of the glass immersed in the lower jig; A temperature measuring device for measuring the temperature of a forming line of the glass set in advance on the object line; An upper jig positioned between the lower jig and the lamp housing, the upper jig being in contact with the glass placed on the lower jig to deform the molding line of the glass or being pressed away from the molded glass; An upper jig moving means for moving the upper jig so that the upper jig is pressed against the glass or separated from the glass; And heating the glass until the temperature of the molding line reaches a pre-set preheat temperature after the glass is mounted on the lower jig, And a control unit for controlling the laser beam to drive the laser to irradiate the laser beam and move the upper jig using the upper jig moving unit when the forming line reaches the softening point temperature so as to press the forming line of the glass .

The preheating temperature may be lower than the softening point temperature.

The preheating temperature may be equal to or lower than 2/3 times the softening point temperature.

And the forming line is formed in a first axial direction, the glass forming apparatus includes a guide rail guiding in the first axial direction, and the lower jig moves along the guide rail to the first axis In the direction of the arrow.

And the shaping line is formed in the first axis direction, the laser beam can move in the first axis direction.

Wherein the first axis, the second axis, and the third axis are perpendicular to each other, the second axis has a direction orthogonal to the first axis, and the third axis is perpendicular to the first axis And the forming line is formed in the first axis direction, the control unit moves the upper jig in the second axis direction and the third axis direction so that the upper jig is in close contact with the glass The upper jig moving means can be controlled so as to be pressurized.

The lamp may be an infrared lamp.

The upper jig is embodied as a '' 'shaped housing,

Vertical plate plate; And a connection plate connecting the horizontal plate and the vertical plate in a curved shape.

The horizontal plate or the vertical plate may be formed of a translucent material.

The horizontal plate may have an area smaller than the surface area of the glass.

Further, an embodiment of the present invention is a method for mounting a glass, A preheating step of preheating the glass until the surface of the glass reaches a preset preheating temperature; A laser irradiating step of irradiating a laser beam onto the molding line until a predetermined forming line of the glass reaches a softening point temperature in a state where the surface of the glass reaches a preheating temperature while maintaining the emission of the lamp; And pressing the forming line of the glass so that the forming line of the glass is deformed when the forming line reaches the softening point temperature.

The preheating process may include a first preheating process in which the surface of the glass is preheated by emitting a lamp disposed opposite to the surface of the glass until a predetermined preheating temperature is reached; And a second preheating step of irradiating the unfocused laser in a zigzag form within a range adjacent to the forming line of the glass until the predetermined second preheating temperature is reached and performing second preheating.

The secondary preheating temperature may be lower than the softening point temperature and higher than the first preheating temperature.

According to the embodiment of the present invention, by having the preheating treatment, strain deformation can be prevented at the time of molding the glass. Further, according to the embodiment of the present invention, only a part of the glass locally reaches the softening point temperature, so that the production cost and the production time can be shortened.

1 and 2 are views showing a state where a glass is heated and molded by a heater in the related art.
3 is a perspective view showing a state in which a glass is mounted on a glass molding apparatus according to an embodiment of the present invention and is preheated by a lamp.
4 is a view showing a state in which a laser is irradiated on a forming line of a glass according to an embodiment of the present invention.
5 is a perspective view showing a state in which a forming line of a glass is deformed by pressing the upper jig against a glass according to an embodiment of the present invention.
6 is a perspective view showing a state in which a forming line of a glass is bent and deformed by separating an upper jig from a glass according to an embodiment of the present invention.
7 is a flowchart illustrating a glass thermoforming process according to an embodiment of the present invention.
8 is a view showing a state in which a laser is irradiated to a glass in a zigzag manner according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, in order to explain the present invention in detail so that those skilled in the art can easily carry out the present invention. . Other objects, features, and operational advantages of the present invention, including its effects and advantages, will become more apparent from the description of the preferred embodiments. It should be noted that the same reference numerals are used to denote the same or similar components in the drawings.

FIG. 3 is a perspective view showing a state in which a glass is placed on a glass molding apparatus according to an embodiment of the present invention and is preheated by a lamp, FIG. 4 is a view showing a state in which a laser is irradiated on a molding line of a glass FIG. 5 is a perspective view illustrating a state in which an upper jig is pressed against a glass to deform a forming line of a glass according to an embodiment of the present invention. FIG. 6 is a perspective view illustrating an upper jig Is separated from the glass so that the forming line of the glass is bent and deformed.

The glass molding apparatus of the present invention includes a lower jig 200, a lamp housing 300, a laser irradiator 400, an upper jig 100, an upper jig moving means 500, a temperature meter (not shown) Not shown). The lower jig 200, the lamp housing 300, the laser irradiator 400, the upper jig 100, the upper jig moving unit 500, and the temperature measuring unit (not shown) (Not shown) may take the form of a cylindrical body such as a cylinder or a rectangular cylinder. The chamber may include a main body having an opened upper portion and a main body And a chamber cover to be installed. Therefore, the inside of the chamber can maintain the vacuum pressure or the low pressure state.

The lower jig 200 is a cradle on which a glass as a substrate is mounted. The glass to be placed on the lower sheet may be tempered glass or the like. That is, there is no restriction on the kind of glass if it has component elements of glass (glass) such as Soda-Lime glass, Fused silica glass, which is made of Na 2 O-CaO-SiO and is tempered glass to which MgO or PbO is added .

The glass placed on the lower jig 200 may be introduced through a gate (not shown) provided on the side of the chamber (not shown) and positioned in the lower jig 200 outside the chamber. In addition, the formed glass can be taken out through the gate. For reference, a plurality of vacuum chucks (not shown) are provided on the mounting surface of the lower jig 200, so that the bottom surface of the glass can be supported by the mounting surface with vacuum pressure.

The lamp housing 300 includes at least one lamp 310 and a reflector 320 which are installed in the chamber so as to face the lower jig 200 and emit light toward the lower jig 200. The lamp housing 300 is shown on the left side of the lower jig, but it may be provided on the right side rather than the left side. The lamp 310 is preferably implemented as an IR lamp 310. The lamp 310 may include a near infrared lamp 310, a medium wave infra red lamp 310, Can be used. Also, the reflector 320 is implemented as a reflector such as a mirror so that light emitted from the lamp 310 is reflected toward the glass.

It is possible to heat the glass to the preheating temperature by energy emitted from one or more lamps 310 provided in the lamp housing 300. When heating is performed using a heater, warping of the glass occurs due to direct heating. That is, the preheating using the heater causes deformation due to the generation of the upper and lower temperatures of the glass due to the continuous heat source transfer. On the contrary, when the lamp 310 emits light by heating as in the present invention, warping of the glass is improved due to indirect heating Because.

The laser irradiator 400 irradiates the laser toward the surface of the glass placed on the lower jig 200. For reference, as the laser irradiator 400 for irradiating a laser, a UV laser, a CO 2 Laser or the like. For reference, a separate scan module (not shown) may be provided to determine the position of the laser emitted from the laser irradiator 400, for example, the irradiation position of the laser on the XY plane on which the glass to be processed is disposed. The scan module includes a scanner for scanning the laser on the XY plane in which the glass is arranged by changing the path of the laser, and a lens for advancing toward the glass by the scanner to form the same size focus on the glass Can include

A temperature measuring device (not shown) measures the surface temperature of the glass forming line L previously set as a line to be molded. The temperature measuring device (not shown) is realized by a non-contact type pyrometer which can be used for measurement of high temperature, and the temperature of the surface of the glass, in particular, the temperature of the forming line L of the glass is measured. Here, the forming line L of the glass is a curved line in which the glass curves and bends, and refers to a predetermined virtual line to be formed into a curved shape.

The upper jig 100 is positioned between the lower jig 200 and the lamp housing 300 and is in contact with the glass mounted on the lower jig 200 to deform the forming line L of the glass, As shown in Fig.

The upper jig 100 has a U-shaped housing structure, and includes a horizontal plate plate, a vertical plate plate, a connecting plate connecting the horizontal plate plate and the vertical plate plate in an oblique curved shape, . Accordingly, when the upper jig 100 presses the edge of the glass having reached the softening point temperature, the edge is pressed by the upper jig 100 in the 'A' shape to deform the forming line L of the glass .

The horizontal plate of the upper jig 100 has a size enough to cover the upper surface of the glass including the edges of the glass, but it can be realized to have an area smaller than the surface area of the glass. It is necessary to apply pressure for deformation to bend the edge of one side of the glass so as to have an area smaller than the entire surface area of the glass. Thus, the manufacturing cost of the upper jig 100 can be reduced.

It is preferable that the horizontal plate plate or the vertical plate plate of the upper jig 100 is made of a translucent material. Such a translucent material may be a translucent material such as sapphire, silicone, germanium, zinc sulfide (ZnS), zinc selenide (ZnSe), fluorine calcium (CaF), fluorine magnesium And can be implemented as a material. Even when the upper jig 100 is separated from the glass, a part of the horizontal plate plate can be positioned between the glass and the lamp housing 300, so that the glass is made of a translucent material, As shown in FIG. Likewise, the laser emitted from the laser irradiator 400 can transmit the transparent plate of the transparent material.

The upper jig moving means 500 is a moving driving means for moving the upper jig 100 so that the upper jig 100 can be pressed against the glass or separated from the glass. The upper jig moving means 500 can move the upper jig 100 upward and downward in the Z-axis direction for pressing or separating, and further move the upper jig 100 forward and backward in the Y-axis direction. For example, when the upper jig 100 is pressed against the glass to press the upper jig 100 for molding, the upper jig 100 is lowered in the Z-axis direction and simultaneously advanced in the Y-axis direction so as to be brought into close contact with the glass. The upper jig 100 may be moved upward in the Z-axis direction and simultaneously moved backward in the Y-axis direction to separate the upper jig 100 from the glass. For reference, the upper jig moving means 500 may be implemented by various moving means such as a guide rail, a piston, and a robot arm.

The upper jig moving means 500 moves the upper jig 100 so that the upper jig 100 is not positioned below the ramp 310 or the laser irradiator 400 when the lamp 310 emits light or the laser irradiator 400 irradiates the laser, As shown in FIG. A part of the upper jig 100 may be positioned below the lamp 310 or the laser irradiator 400. In the case where the upper jig 100 is made of a transparent material, A part of the upper jig 100 may be positioned below the lamp 310 or the laser irradiator 400 in order to shorten the moving time of the upper jig 100. [

In the description of the present invention, the first axis, the second axis, the Y axis, and the third axis, which are the X axis, are perpendicular to each other, and the second axis that is the Y axis is perpendicular to the first axis, And a third axis which is a Z axis has a direction orthogonal to a first axis which is an X axis perpendicular to the X axis, so that the XY plane forms a horizontal plane and the YZ plane forms a vertical plane. It is also assumed that the forming line L of the glass, which is an area line curved and curved in the glass, is formed in the first axis direction which is the X axis.

The control unit (not shown) mounts the glass on the lower jig 200, and then drives the lamp 310 as shown in FIG. 3 to heat the glass until a predetermined preheating temperature is reached. Thereafter, as shown in Fig. 4, the laser irradiator 400 is driven to irradiate the laser until the forming line L has a predetermined softening point temperature. At this time, at the time of laser irradiation, the lamp 310 is continuously driven to maintain a state of providing a heat source.

When the forming line L reaches the softening point temperature, the control unit (not shown) moves the upper jig 100 by using the upper jig moving means 500 as shown in FIG. 5, L). That is, the first axis, which is the X axis, the second axis which is the Y axis, and the third axis which is the Z axis are perpendicular to each other, the second axis has a direction perpendicular to the first axis in the horizontal direction, And the forming line L is formed in the first axial direction, the control unit (not shown) controls the movement of the upper jig 100 in the second axial direction and in the third axial direction To control the upper jig moving means 500 so that the upper jig 100 can be pressed against the glass.

6, the control unit (not shown) determines that the molding of the glass has been completed after a predetermined time has elapsed, and moves the upper jig 100 in the direction of the third axis which is the Y axis, The upper jig 100 is separated from the glass. That is, the control unit (not shown) moves the upper jig 100 in the second axial direction and the third axial direction to control the upper jig moving unit 500 so that the upper jig 100 is separated from the glass .

The preheating temperature is set to be lower than the softening point temperature which is the molding temperature. The softening point is the temperature at which the material begins to undergo deformation and softening by heating. As described above, the temperature is elevated to the softening point temperature using a laser after preheating by using the lamp 310 without directly raising the temperature to the softening point by using the laser, so that the abrupt temperature rise of the glass can be prevented, It is possible to prevent deterioration of the glass characteristics such as warping and curvature.

The preheating temperature may be equal to or lower than 2/3 times the softening point temperature. For example, the preheating temperature may be set at 600 ° C and the softening point temperature may be set at 900 ° C. When the preheating temperature is higher than 2/3 times the softening point temperature, the glass characteristics deteriorate due to the rapid temperature change until the preheating temperature is reached.

Meanwhile, the processing to the preheating temperature can be preheated through the lamp 310, but it may have a configuration further including a second preheating using a laser after the first preheating using the lamp 310. This will be described in detail with the flowchart of Fig.

On the other hand, when the temperature treatment using the laser is performed, the laser condensing beam must be irradiated along the forming line L of the glass. To do this, the laser is moved along the forming line L of the glass. To this end, if the forming line L is formed in the first axis direction which is the X axis, the laser irradiator 400 can be moved in the first axis direction which is the X axis.

Alternatively, the laser can be implemented to fix the laser and move the glass, not the laser, and perform the laser irradiation. To this end, if the forming line L is formed in the first axial direction which is the X axis, the glass forming apparatus may further include a guide rail guiding in the first axial direction which is the X axis. Therefore, the lower jig 200 can move forward or backward along the guide rail in the first axial direction which is the X axis.

7 is a flow chart illustrating a glass thermoforming process according to an embodiment of the present invention.

First, a process of pulling the glass into the chamber and mounting the glass in the lower jig 200 (S710) is performed. Thereafter, a preheating process (S720, S730, S740) for preheating the glass placed on the lower jig 200 until the surface of the glass reaches a predetermined preheating temperature, for example, 600 deg.

The preheating process may be performed by a single heating process, but a preheating process may be performed in two steps to prevent deformation of the glass. After the first preheating (S720) using the lamp 310, Lt; RTI ID = 0.0 > S730. ≪ / RTI >

That is, the preheating process includes a first preheating process (S720) in which the surface of the glass is preheated by emitting a lamp (310) spaced opposite to the surface of the glass until the surface of the glass reaches a predetermined first preheat temperature (S720) (S730) in which the unfocused laser is irradiated in a zigzag form within the adjacent range of the forming line L of the glass until the temperature becomes a second preheating step. In the second preheating process (S730), the emission of the lamp 310 is kept to be maintained when laser irradiation is performed.

Since the unfocused laser is irradiated in a zigzag form in the vicinity of the forming line L of the glass because the irradiation of the laser irradiator 400 to which the laser is focused can bring about an effect of a radical temperature rise, The laser of the laser is adjusted to irradiate the unfocused laser in a zigzag form in the vicinity of the forming line L of the glass. For reference, the irradiation of the laser in the zigzag form in the vicinity of the forming line L of the glass is performed by fixing the glass and moving the laser irradiator 400 to the jig as shown in FIG. 8, The laser can be caused to irradiate the laser within the adjacent range of the forming line L by fixing the glass plate 400 and moving the glass jig back thereto.

It is judged whether the surface of the glass has reached the preheating temperature (S740). When the surface of the glass reaches the preheating temperature, the glass is heated until the glass forming line (L) (S750) for irradiating the forming line (L).

Then, it is determined whether the forming line L has reached the softening point temperature (S760). When the forming line L reaches the softening point temperature, the forming line L of the glass is pressed (S770). 5, the upper jig 100 is moved by using the upper jig moving means 500 to control the forming line L of the glass to pressurize the molding line L of the glass . That is, the first axis, which is the X axis, the second axis which is the Y axis, and the third axis which is the Z axis are perpendicular to each other, the second axis has a direction perpendicular to the first axis in the horizontal direction, And the forming line L is formed in the first axial direction, the control unit (not shown) controls the movement of the upper jig 100 in the second axial direction and in the third axial direction To control the upper jig moving means 500 so that the upper jig 100 can be pressed against the glass.

After pressurization is performed, the upper jig 100 is moved backward in the second axial direction and in the third axial direction to separate the upper jig 100 from the glass as shown in Fig.

On the other hand, the secondary preheating temperature is set lower than the softening point temperature and higher than the first preheating temperature. For example, the first preheat temperature may be set at 300 ° C, the second preheat temperature may be set at 600 ° C, and the softening point temperature may be set at 900 ° C.

The preheating temperature may be equal to or lower than 2/3 times the softening point temperature. For example, the preheating temperature may be set at 600 ° C and the softening point temperature may be set at 900 ° C. When the preheating temperature is higher than 2/3 times the softening point temperature, the glass characteristics deteriorate due to the rapid temperature change until the preheating temperature is reached.

The embodiments of the present invention described above are selected and presented in order to facilitate the understanding of those skilled in the art from a variety of possible examples. The technical idea of the present invention is not necessarily limited to or limited to these embodiments Various changes, modifications, and other equivalent embodiments are possible without departing from the spirit of the present invention.

100: upper jig
200: lower jig
300: Lamp housing
310: lamp
400: laser irradiator
500: Upper jig moving means

Claims (13)

A lower jig with a glass mount;
A lamp housing having at least one lamp opposed to the lower jig to emit light toward the lower jig;
A laser irradiator for irradiating a laser toward the surface of the glass immersed in the lower jig;
A temperature measuring device for measuring a surface temperature of a predetermined forming line of the glass;
An upper jig which is provided between the lower jig and the lamp housing and which is in contact with the glass placed on the lower jig to deform the molding line of the glass or is separated from the molded glass;
An upper jig moving means for moving the upper jig so that the upper jig is pressed against the glass or separated from the glass; And
The glass is heated until the predetermined preheating temperature is reached after the glass is mounted on the lower jig, and the glass is heated to a pre-set softening point temperature A control unit for controlling the laser beam to drive the laser beam until the forming line reaches the softening point temperature, and moving the upper jig to press the forming line of the glass;
.
The method according to claim 1,
Wherein the preheating temperature is lower than the softening point temperature.
The method according to claim 1,
Wherein the preheating temperature has a temperature equal to or lower than 2/3 times the softening point temperature.
The method according to claim 1, wherein, when the forming line is formed in the first axial direction,
Wherein the glass forming apparatus includes a guide rail guiding in the first axial direction,
Wherein the lower jig is movable along the guide rail in the first axial direction.
The method according to claim 1, wherein, when the forming line is formed in the first axial direction,
Wherein the laser irradiator is movable in the first axis direction.
The method according to claim 1,
Wherein the first axis, the second axis, and the third axis are perpendicular to each other, the second axis has a direction orthogonal to the first axis, and the third axis is perpendicular to the first axis And the forming line is formed in the first axis direction,
Wherein the control unit moves the upper jig in the second axial direction and the third axial direction to control the upper jig moving unit so that the upper jig is pressed against the glass and pressed.
The method according to claim 1,
Wherein the lamp is an infrared lamp.
The method according to claim 1,
The upper jig is embodied as a '' shaped housing,
Horizontal plate plate;
Vertical plate plate;
A connecting plate connecting the horizontal plate and the vertical plate in a curved shape;
.
The method of claim 8,
Wherein the horizontal plate plate or the vertical plate plate is made of a translucent material.
The method of claim 9,
Wherein the horizontal plate plate has an area smaller than a surface area of the glass.
The process of mounting the glass;
A preheating step of preheating the glass until the surface of the glass reaches a preset preheating temperature;
A laser irradiating step of irradiating a laser beam onto the molding line until a predetermined forming line of the glass reaches a softening point temperature in a state where the surface of the glass reaches a preheating temperature while maintaining the emission of the lamp; And
Pressing the forming line of the glass so that the forming line of the glass is deformed when the forming line reaches the softening point temperature;
. ≪ / RTI >
12. The method of claim 11,
A primary preheating step of luminescing a lamp provided opposite to the surface of the glass surface until the surface of the glass reaches a preset primary preheating temperature to preheat the glass;
A second preheating step of irradiating the unfocused laser in a zigzag form within the adjacent range of the forming line of the glass until the predetermined second preheating temperature is reached and performing second preheating;
. ≪ / RTI >
The method of claim 12,
Wherein the second preheating temperature is lower than the softening point temperature and higher than the first preheating temperature.
KR1020150089344A 2015-06-23 2015-06-23 Apparatus for thermoforming glass and method for thermoforming the same KR20170000466A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180085522A (en) * 2017-01-19 2018-07-27 삼성전자주식회사 Curved glass forming apparatus
CN108558188A (en) * 2018-06-19 2018-09-21 深圳光韵达光电科技股份有限公司 A kind of curve glass forming apparatus and forming method
CN108585453A (en) * 2018-07-12 2018-09-28 深圳科瑞技术股份有限公司 A kind of automatic feed mechanism of 3D hot-bending machines

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150042619A1 (en) 2011-05-20 2015-02-12 William Mark Corporation App Gadgets And Methods Therefor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150042619A1 (en) 2011-05-20 2015-02-12 William Mark Corporation App Gadgets And Methods Therefor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180085522A (en) * 2017-01-19 2018-07-27 삼성전자주식회사 Curved glass forming apparatus
CN108558188A (en) * 2018-06-19 2018-09-21 深圳光韵达光电科技股份有限公司 A kind of curve glass forming apparatus and forming method
CN108585453A (en) * 2018-07-12 2018-09-28 深圳科瑞技术股份有限公司 A kind of automatic feed mechanism of 3D hot-bending machines

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