WO2020085622A1 - System and method for processing 3d curved glass - Google Patents

Abstract

The present invention relates to a 3D curved glass processing system and method implemented to enable manufacture of 3D S-curved-and-twisted cover glass through a 3D bending process using a reheat vacuum and cold mold pressing (RVCP) system and a spray printing system when cover glass for a large-size automotive display is manufactured, wherein: a molding machine body molds raw glass into 3D curved glass through driving control; a cooling device supplies cooling water or air to the molding machine body through driving control so as to cool the 3D curved glass molded by the molding machine body; and a control device controls driving of the molding machine body and the cooling device.

Description

3D curved curved glass processing system and method {SYSTEM AND METHOD FOR MANUFACTURING 3D CURVED GLASS}

The technical field of the present invention relates to a 3D curved curved glass processing system and method, in particular, when manufacturing cover glass for automobile large display, RVCP method (Reheat Vacuum and Cold mold Pressing system) and coating method (spray printing) system) to 3D S-curved / twisted cover glass (3D S-curved / twisted cover glass) by 3D curved processing.

A glass window applied to the display of an IT product is used after cutting flat glass and assembling it into a device. However, in order to increase the degree of freedom in design and improve the grip, etc., the surface on which the display unit such as LCD and AMOLED is mounted is flat and the opposite side is non-planar (ie 2.5D), but both sides are non-planar (ie The demand for glass units with 3D) is increasing. In particular, in accordance with the trend of increasing demand to enjoy driver information, entertainment, games, etc. on a large display due to the development and operation of autonomous vehicles, a large-scale integrated dashboard with vehicle dashboard, navigation, CID, etc. -Demand for curved substrates is also increasing.

As a method of processing such a 3D curved curved glass unit, both sides of the flat fabric glass are cut to a certain size, and the cut glass is fixed to a CNC machine, and then the wheel mounted on the equipment moves while the designated path is desired. After making a shape such as a curved surface, there is a method of making a mirror surface by polishing the surface where the grindstone has passed. However, such a method requires a grinding process because the curved surface is formed on the glass by grinding, which takes a long time to process and is difficult to mass-produce, and the roughness of the curved surface formed by grinding is necessary, and the polishing process is difficult. In addition, the polishing time becomes longer and the price of the product increases.

Korean Registered Patent No. 10-1642314 (Registration on July 19, 2016) discloses a glass manufacturing method and a mold used in glass manufacturing, in which a flat glass is loaded and an upper portion pressing the flat glass is formed into a concave curved shape Lower mold; Located in the upper portion of the lower mold presses the flat glass together with the lower mold, the lower portion pressing the flat glass includes an upper mold formed in a convex curved shape, and the amount of dimensional change before and after molding according to the shape change of the flat glass, It is characterized in that a space is provided between the lower mold and the flat glass loaded in the lower mold so that the dimensional change amount at room temperature and molding temperature due to thermal expansion of the lower mold and flat glass is reflected. According to the disclosed technology, a flat glass is molded in a mold by inserting a flat glass into a mold so that the flat glass has a curved shape, and one surface of the flat glass can be processed into a flat shape, and the flat glass is shaped to have a curved shape. It is possible to provide a mold that improves the precision of the glass.

Korean Patent Publication No. 10-2017-0131128 (published on Nov. 29, 2017) is a flat glass material placed on a single mold and is rotated and rotated for each process by an index rotation method, so that the structure of the molded part is simple and installation of the entire facility is performed. Disclosed is a 3D curved curved glass forming apparatus and method capable of increasing space utilization by minimizing space, rapidly converting processes by a turntable index method, and strictly performing temperature and pressure management for each process. According to the disclosed technology, a rotating table having a plurality of mold placing portions in a circumferential direction at regular intervals; A rotation and vacuum unit for generating a vacuum suction input to a mold on which a glass plate is placed by transmitting a vacuum pressure to a mold placement unit by equipping a motor member with a motor member that provides power to divide and rotate the rotating table at a constant angle in one direction; A preheating part heated on a mold and preheating the adsorbed glass plate; Equipped with a hot air supply pipe to supply hot air to heat the glass plate preheated in the preheating section to a softening temperature, the glass plate is pressed to the curved surface of the mold by vacuum suction applied to the mold on which the glass plate heated up to the softening temperature is raised to process the curved surface of the glass plate. Forming part to be made; And it characterized in that it comprises a cooling unit for cooling the curved glass plate in the mold.

In the conventional technique as described above, when 3D curved curved glass is formed, due to the tunnel-type heating and oxidizing mold, contamination of the glass surface is required, and surface polishing is essential, and the mold has a short life. In addition, in the conventional technology as described above, it is difficult to bend due to the thin plate having a thickness of 2 (mm) or less of the large curved glass, and particularly, there is a problem of restoration and warping during high temperature molding.

The problem to be solved by the present invention is to solve the drawbacks and problems as described above, RVCP method (Reheat Vacuum and Cold mold Pressing system) and coating method when manufacturing cover glass for automobile large display ( It is to provide a 3D curved curved glass processing system and method implemented to manufacture 3D S-curved and twisted cover glass by spray printing system). .

As a means for solving the above-mentioned problems, according to one feature of the present invention, a molding base body for molding a raw glass into 3D curved curved glass according to driving control; A cooling device for cooling the 3D curved curved glass formed by the molding base body by supplying cooling water or air to the molding base body according to driving control; And it provides a 3D curved curved glass processing system including a control unit for controlling the driving of the molding base and the cooling device.

In one embodiment, the molding base is characterized in that the fabric glass is molded into 3D S-curved / twisted cover glass by 3D music processing using RVCP.

In one embodiment, the molding base body is characterized in that the fabric glass is molded into 3D curved curved glass within a predetermined time by using a single mold using a near infrared heater.

In one embodiment, the molding base body is characterized in that the mold is made of one of stainless steel, ceramics, or aluminum, and is press-compressed to mold the fabric glass into 3D curved glass.

In one embodiment, the molding base body is characterized by using a near-infrared heater having a total of 82.5 (Kw) and a coil temperature of 2000 to 2200 degrees with 33 outputs (heat source capacity) of 2.5 (Kw).

In one embodiment, the molding base body is characterized in that a stainless steel heating furnace is used.

In one embodiment, the molding base body is characterized in that it consists of water-cooled by cooling water supplied from the cooling device or air-cooled by air when cooling 3D curved glass.

In one embodiment, the forming base body is formed on the upper portion and a metal plate for reflecting radiant heat; It is characterized in that it has a heat exhaust mechanism for discharging heat to the outside by forming in the ceiling portion.

In one embodiment, the molding base body is characterized in that it comprises a vacuum pump for suction and vacuum suction of the mold and the fabric glass.

In one embodiment, the molding base body is characterized in that the vacuum reaching pressure of the vacuum pump is 1.3 (KPa).

In one embodiment, the molding base body is characterized by applying a cooling water or air supply and a vacuum suction adsorption function to the molding mold.

In one embodiment, the molding base body is characterized in that the fabric glass is input by aligning the position of the push bar within a preset time.

In one embodiment, the molding basic body is characterized in that the cooling water or air supplied from the cooling device is circulated inside the molding mold.

In one embodiment, the molding base body, a loading unit for loading the fabric glass by raising to a predetermined temperature; A preheating unit for preheating the glass loaded in the loading unit for a predetermined time at a preset temperature; A forming unit for raising the glass to a preset temperature and forming the glass preheated in the preheating unit into 3D curved curved glass; And a cooling unit for receiving the cooling water or air supplied from the cooling device and cooling the 3D curved curved glass formed in the molding unit.

In one embodiment, the loading unit is characterized in that the temperature difference with the preheating unit is adjusted so as not to exceed 40 degrees.

In one embodiment, the molding base body is characterized in that it further comprises a camera for inspecting whether the fabric glass is broken before loading the fabric glass.

In one embodiment, the loading unit is characterized by loading the fabric glass and transferring it to the preheating unit.

In one embodiment, the preheating unit is characterized in that preheating the glass loaded in the loading unit for a predetermined time while maintaining the atmosphere temperature in the preheating chamber at a preset temperature.

In one embodiment, the preheating chamber is characterized by raising the near infrared heater to 400 degrees.

In one embodiment, the preheating unit is characterized by preheating the glass loaded in the loading unit for a predetermined time by raising from room temperature to 400 degrees.

In one embodiment, the forming unit is characterized in that the atmospheric temperature in the forming chamber is raised to a predetermined temperature and intensively and locally heated to the curved forming portion of the glass preheated in the preheating unit.

In one embodiment, the forming chamber is characterized by raising the near-infrared heater to 900 degrees.

In one embodiment, the forming unit, by forming a narrower or wider than the spacing between the heating wires corresponding to the curved portion of the preheated portion corresponding to the curved portion having a greater curvature than the other curved molded portion of the glass preheated in the preheated portion It is characterized by giving.

In one embodiment, the molding unit is characterized in that the curvature forming part having a large curvature is formed in the same time as other curving parts by intensively and locally heating the curving part having a large curvature.

In one embodiment, the molding unit is characterized in that the glass is preheated in the preheating unit by rising to a predetermined temperature and dropping itself and vacuum suction.

In one embodiment, the molding portion is characterized in that the local heating portion of the glass preheated in the preheating portion is seated on the molding mold by tilting the molding mold by a predetermined angle.

In one embodiment, the molding unit is characterized in that, in the control device, the molding mold is moved along the rail according to the control in a manner that the molding mold moves on the rail according to the heating recipe setting.

In one embodiment, the molding unit is characterized in that the suction suction of the molding mold under the control of the control device.

In one embodiment, the forming unit, while raising the temperature from the preheating temperature of 250 to 400 degrees to 700 to 900 degrees, which is the temperature near the softening point according to the glass type, converts the glass preheated in the preheating portion to 3D curved glass. It is characterized by molding.

In one embodiment, the forming unit is pressurized by a vacuum press for a predetermined period of time and simultaneously with a three-axis ceramic roll press or a roll press coated with an oxide (eg, ceramic) on a stainless steel (SUS) bar (inner, pressing jig). It is characterized by giving.

In one embodiment, the molding unit is characterized in that it maintains the molding in the vacuum suction and the upper and lower mold hydraulic pressure for a predetermined time.

In one embodiment, the forming unit, the total time required to perform molding into a curved glass of 3D shape by discharging 3D-shaped curved glass within a predetermined time is within 5 minutes (preferably, optimal It is characterized by being in the range of 2-3 minutes).

In one embodiment, the cooling unit is characterized by cooling to a normal temperature from a preset temperature by slow cooling unloading.

In one embodiment, the cooling unit is characterized in that the mold and the glass are vacuum-sucked out of the heating chamber and gradually cooled.

In one embodiment, the cooling unit is characterized by increasing the cooling rate by circulating the chiller to the heating portion of the mold and the upper near-infrared heater at a preset supply speed, if necessary under the control of the control device.

In one embodiment, the cooling unit is characterized in that the cooling water or air supplied from the cooling device is delivered to the molding mold and the upper near-infrared heater.

In one embodiment, the cooling unit is characterized by slow cooling the 3D curved curved glass formed in the molding unit for a predetermined time as an option in the process.

In one embodiment, the cooling device is provided with an outdoor unit, it is characterized in that it releases the heat generated when cooling the curved glass 3D surface to the outside.

In one embodiment, the 3D curved curved glass processing system is characterized in that the outdoor unit connected to the cooling device is provided separately.

In one embodiment, the cooling device is characterized by using a chiller that cools to 40 degrees at a feed rate of 50 (L / min).

In one embodiment, the control device is characterized in that to control the pneumatic cylinder to adjust the up and down stroke by a predetermined distance to up and down the heating chamber.

In one embodiment, the control device is equipped with an MCU to perform Arduino control and various relay control, and is characterized in that it performs temperature control with 1 point of preheating and 2 points of molding.

In one embodiment, the control device is provided with a heating setting screen, and outputs the near-infrared heater settings, individually set the time, and the power (Kw) of the near-infrared heater related to temperature and temperature control for each zone is set Is done.

In one embodiment, the control device is characterized by performing a setting for the slow cooling process with a slow cooling process diagram screen.

In one embodiment, the 3D curved curved glass processing system is characterized in that it further comprises a coating device for painting the flat glass before molding in the molding base body according to the driving control of the control device.

In one embodiment, the coating device is characterized in that it comprises a spray coating equipment for spraying a protective film to prevent surface contamination or surface damage, or spraying black ink to increase the radiant heat efficiency of the near infrared heater. do.

In one embodiment, the 3D curved curved glass processing system further includes a film working device for bonding a functional film to the front surface of the 3D curved curved glass molded from the molding base with a 3-axis bonding equipment. It is characterized by.

As a means for solving the above-mentioned problems, according to another feature of the present invention, the control device controls the driving of the molding base body and the cooling device; Forming the raw glass into 3D curved curved glass according to the driving control of the control device by the molding basic body; And cooling the 3D curved curved glass molded by the molding basic body by supplying cooling water or air to the molding basic body according to the driving control of the control device. to provide.

As an effect of the present invention, 3D S-curve by 3D song processing using RVCP method (Reheat Vacuum and Cold mold Pressing system) and spray printing system when manufacturing cover glass for automobile large display. By providing a 3D curved curved glass processing system and method implemented to manufacture 3D S-curved and twisted cover glass, it is possible to polish the surface without contamination of the glass surface with a single mold. There is no need to do it and semi-permanent mold life is possible.

According to the present invention, the preheating function and the temperature to the softening point are differentially and locally increased within a preset time (for example, 60 seconds), and compressed by a vacuum suction method or an upper and lower mold and cooled slowly, so that even when a large curved glass is a thin plate It is easy to bend, and it can solve the problem of restoration and distortion even at high temperature molding.

1 is a view for explaining a 3D curved curved glass processing system according to an embodiment of the present invention.

FIG. 2 is a view for explaining a mold used for the molding basic body shown in FIG. 1.

3 is a view for explaining the molding basic body in FIG. 1.

FIG. 4 is a view for explaining the loading unit in FIG. 3.

5 is a view for explaining the preheating unit in FIG.

FIG. 6 is a view for explaining the molding part in FIG. 3.

7 is a view for explaining the cooling unit in FIG. 3.

8 is a view for explaining a 3D curved curved glass processing method according to an embodiment of the present invention.

Hereinafter, exemplary 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 may easily practice. However, since the description of the present invention is only an example for structural or functional description, the scope of the present invention should not be interpreted as being limited by the embodiments described in the text. That is, since the embodiments can be variously modified and have various forms, it should be understood that the scope of the present invention includes equivalents capable of realizing technical ideas. In addition, the purpose or effect presented in the present invention does not mean that a specific embodiment should include all of them or only such an effect, and the scope of the present invention should not be understood as being limited thereby.

The meaning of the terms described in the present invention should be understood as follows.

Terms such as "first" and "second" are for distinguishing one component from other components, and the scope of rights should not be limited by these terms. For example, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. When a component is said to be "connected" to another component, it may be understood that other components may exist in the middle, although they may be directly connected to the other component. On the other hand, when a component is said to be "directly connected" to another component, it should be understood that no other component exists in the middle. On the other hand, other expressions describing the relationship between the components, that is, "between" and "immediately between" or "adjacent to" and "directly neighboring to" should be interpreted similarly.

Singular expressions are to be understood as including plural expressions unless the context clearly indicates otherwise, and terms such as "comprises" or "have" include the features, numbers, steps, actions, components, parts or components described. It is to be understood that a combination is intended to be present, and should not be understood as pre-excluding the presence or addition possibility of one or more other features or numbers, steps, operations, components, parts or combinations thereof.

All terms used herein have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains, unless otherwise defined. The terms defined in the commonly used dictionary should be interpreted to be consistent with the meanings in the context of the related art, and cannot be interpreted as having ideal or excessively formal meanings unless explicitly defined in the present invention.

Now, a 3D curved curved glass processing system and method according to an embodiment of the present invention will be described in detail with reference to the drawings.

1 is a view for explaining a 3D curved curved glass processing system according to an embodiment of the present invention, FIG. 2 is a view for explaining a mold used in the molding base in FIG. 1, and FIG. 3 is a molding machine in FIG. 1 4 is a view for explaining the main body, FIG. 4 is a view for explaining the loading unit in FIG. 3, FIG. 5 is a view for explaining the preheating unit in FIG. 3, and FIG. 6 is a view for explaining the molding unit in FIG. 7 is a view for explaining the cooling unit in FIG. 3.

1 to 7, the 3D curved curved glass processing system 100 includes a molding base body 110, a cooling device 120, and a control device 130.

The molding base body 110 is driven under the control of the control device 130 to mold the raw glass into 3D curved curved glass.

In one embodiment, the molding base body 110 may be formed into a 3D S-curved / twisted cover glass of fabric glass by 3D music processing using the RVCP method.

In one embodiment, the molding base body 110 uses a special heat source such as a near-infrared heater method to transform the fabric glass into 3D curved curved glass within a predetermined time (for example, 2 minutes) in a single mold in room temperature atmosphere. It can be molded. Here, in the case of a near-infrared heater, the arrangement is formed to be uniform, and the voltage applied to the heater by dividing the zone without making a difference in heating temperature by arrangement of the heater according to the molding shape is different from the control device 130 It can be adjusted, and the distance between the glass and the heater can be adjusted according to the glass shape, and the molding temperature can be adjusted to 700 ~ 900 degrees.

In one embodiment, the molding base body 110 may be formed of one mold of a cold mold method, and thus, one mold may be used for preheating-forming-slow cooling. Alternatively, the molding basic body 110 may be divided into three, but can be configured by processing like one without a step difference in the interface. Or, in order to fundamentally prevent foreign matter or scratches on the mold from being transferred to the molded surface of the molding base body 110, the foreign material is allowed in the glass or the mold is brought into contact with only the invisible part by BM printing on the outside. It can also be constructed by processing into an empty mold.

In one embodiment, the molding base body 110, when the display in the vehicle is curved and large (for example, 30 inches or more) and has a sharp curvature, a special material as shown in Figure 2 (for example, Fabric glass can be molded into 3D curved curved glass by using a mold made of stainless steel (one of SUS, ceramic (CERAMIC), aluminum (AL), etc.).

In one embodiment, the molding base body 110, as a heating specification, the output (heat source capacity) when molding the fabric glass into a 3D curved curved glass of a size of 30 inches (for example, 700mm ~ 950mm) A mold coated with oxide (for example, ceramic, etc.) on materials such as stainless steel (SUS304), using a near infrared heater method with a total of 82.5 (Kw) and 33 coils with a total of 82.5 (Kw) and a coil temperature of 2000 to 2200 degrees Can be used. Here, in the prior art, it was recognized that sten was impossible to use, but such a coating according to the present invention allowed the mold to be used semi-permanently more than 30,000 times.

In one embodiment, the molding base body 110, when cooling the 3D curved curved glass, may be made of water-cooled by the cooling water supplied from the cooling device 120 or air-cooled by air, and radiated heat by forming a metal plate on the top It can be reflected, and a heat exhaust port may be formed on the ceiling to discharge heat to the outside.

In one embodiment, the molding base body 110 may be provided with a vacuum pump to adsorb and vacuum suction the mold and the fabric glass. At this time, by using two vacuum pumps of 680 (mmHg), the vacuum attainment pressure is preset. It can be given as a value (for example, 1.3 (KPa) (abs)).

In one embodiment, the molding base body 110 may apply a vacuum suction adsorption function to the molding mold and the upper near infrared heater to supply cooling water or air and to the molding mold.

In one embodiment, the molding base body 110, for example, by sending circulating cooling water or air supplied from the cooling device 120 to the inner and upper near-infrared heater of a molding mold made of one of stainless, ceramic, aluminum, etc., life It can be made semi-permanently, and the glass surface is not oxidized, so that it is not necessary to polish the processed surface. In other words, the molding base body 110, by supplying the cooling water or air supplied from the cooling device 120 to the inside of the molding mold and the upper near-infrared heater, the temperature of the molding mold can be kept constant, heating is stopped From the softening point (eg, 700 to 900 degrees) to the slow cooling point, the transition point (eg, 550 degrees) or less, while the final deformation does not occur can be annealed to a temperature. Here, since the glass has a different softening point for each type, it is preferable to set the range of the molding temperature point (ie, softening point) to 700 to 900 degrees. Further, the preheating temperature is preferably 250 to 400 degrees.

In one embodiment, the molding base body 110 may be input by aligning the fabric glass by the alignment of the push bar within a predetermined time (for example, 20 seconds), and then output 20 It can be warmed by (%), and heating can be performed in 55 stages in 3 stages of 30 seconds, 20 seconds, and 5 seconds, and slow cooling can be performed in 85 stages in 2 stages of 15 seconds and 70 seconds, And, the vacuum can be discharged after performing a total of 40 seconds in two stages of 30 seconds after 45 seconds to 10 seconds, 110 seconds (55 seconds to start slow cooling) after heating starts.

In one embodiment, the molding base body 110, as shown in Figure 3, the loading unit 111, a preheating unit (or, preheating / forming unit) 112, a forming unit (or, forming / preheating unit) (113), may include a cooling unit 114. Here, in the order of loading-> preheating-> forming-> unloading, it is a 3D curved curved glass processing method in one direction, loading / unloading <-> preheating / forming, forming / preheating <-> loading / unloading In the case of loading, it should be well understood that both are possible with 3D curved curved glass processing in both directions.

As illustrated in FIG. 4, the loading unit 111 may increase the preset temperature (eg, 400 degrees) to load the fabric glass.

In one embodiment, the loading unit 111 may be adjusted so that the temperature difference from the preheating unit 112 does not exceed 40 degrees. At this time, in the case of damage due to thermal shock, the chip of the glass processing unit (not shown in the drawing for convenience of explanation) is the cause, so before loading the fabric glass, the fabric glass is inspected for damage by the naked eye of the camera or operator. It might be.

In one embodiment, the loading unit 111 may load the fabric glass and transfer it only to the preheating unit 112.

The preheating unit 112 preheats the glass loaded in the loading unit 111 at a preset temperature (eg, 400 degrees), as shown in FIG. 5.

In one embodiment, the preheating unit 112, while maintaining the atmosphere temperature in the heating chamber (that is, the preheating chamber) at a preset temperature (for example, 400 degrees), a preset time (for example, about 2 minutes) The glass loaded in the loading section 111 may be preheated. Here, the preheating chamber may raise a near infrared (NIR) heater (for example, a Heraeus lamp, etc.) at about 62KW to 250 to 400 degrees.

In one embodiment, the preheating unit 112 may preheat the glass loaded in the loading unit 111 for a predetermined time (for example, 30 seconds) by raising from room temperature to 250 to 400 degrees.

As shown in FIG. 6, the molding unit 113 molds the glass preheated in the preheating unit 112 at a preset temperature (eg, 700 to 900 degrees) into 3D curved curved glass.

In one embodiment, the forming unit 113 increases the atmospheric temperature in the heating chamber (that is, the forming chamber) to a preset temperature (for example, 400 to 800 degrees) of the glass preheated in the preheating unit 112. It can be heated intensively and locally in the curved part. Here, the forming chamber, the near infrared (NIR) heater (for example, Heraeus lamp, etc.) can be raised to 700 ~ 900 degrees to about 128KW.

In one embodiment, the forming unit 113, as shown in Figure 6, the heating wire (ie, coil) corresponding to the curved portion having a greater curvature than the other curved forming portion of the glass preheated in the preheating section 112 By forming the gap narrower (or wider) than the heating wire spacing corresponding to other curved forming portions, the curved forming portion having a large curvature can be intensively and locally heated, and thus the curved forming portion having a large curvature is different. Allows the song forming to be performed within the same time as the song forming part. At this time, it should be understood that the opposite configuration is possible depending on the shape to be molded.

In one embodiment, the forming unit 113 increases the temperature preheated in the preheating unit 112 by the self-weight drop and vacuum suction by rising to a predetermined temperature (for example, 700 to 900 degrees) by self-weight drop and vacuum suction. It can be molded.

In one embodiment, the molding unit 113 may incline the molding mold by a predetermined angle so that the local heating portion of the glass preheated in the preheating unit 112 by the self-weight drop is seated on the molding mold.

In one embodiment, the molding unit 113 moves the molding mold along the rail according to the control of the control device 130 (that is, the molding mold is controlled by moving the rail according to the heating recipe setting). Can give.

In one embodiment, the molding unit 113 may adsorb the vacuum suction to the molding mold under the control of the control device 130.

In one embodiment, the forming unit 113, the preheating unit for a predetermined time (for example, 30 seconds) while increasing from a preheating temperature of 250 to 400 degrees to 700 to 900 degrees, which is the temperature near the softening point according to the glass type. In 112), the preheated glass may be molded into 3D curved curved glass.

In one embodiment, the forming unit 113, a vacuum suction for a predetermined time (for example, 20 seconds) and at the same time a three-axis ceramic roll press (ceramic roll press) or roll plate coated with oxide on a metal pipe It may also be pressurized with a steel (for example, a roll press coated with an oxide (for example, ceramic) on a stainless steel bar (for example, a pressing jig)).

In one embodiment, the forming unit 113 is molded in a vacuum suction and up and down mold hydraulic pressure (or by pressing a pressing bar (inner, roll press)) for a predetermined time (for example, 30 seconds) You can keep it.

In one embodiment, the molding unit 113 discharges the 3D-shaped curved glass within a predetermined time (for example, 20 seconds) to perform the molding of a single 3D-shaped curved glass. The time (i.e., pure molding time) can be set within 5 minutes (preferably, 2-3 minutes in the optimal range).

In one embodiment, the forming unit 113 may be divided into 5 to 10 zones to be sequentially heated, and at this time, processing of a difficult shape of the curved surface (ie, a curved forming part having a higher curvature than other curved forming parts) To this end, after heating with a priority heating priority, if the weight falls from the softening point, the shape can be fixed by sucking with air in order.

In one embodiment, in the molding process, the portion where the LCD display is attached (ie, R2000mm) to a place with a large curvature is an important part that should not be distorted, and the middle connecting portion (ie, R50 / R50mm) has a small curvature but design It is an important connection part. At this time, the forming part 113 is difficult to form the intermediate connection part, so that it can reach the softening point first when heated, and perform suction and pressurization (roll jig). have.

In an embodiment, the forming unit 113 divides the near-infrared heater into a plurality of zones to locally perform different heating conditions to perform curved forming of a curved shape on the glass preheated in the preheating unit 112, thereby 3D It can be molded from curved curved glass.

As illustrated in FIG. 7, the cooling unit 114 receives cooling water or air supplied from the cooling device 120 to cool the 3D curved curved glass molded in the molding unit 113.

In one embodiment, the cooling unit 114 may be cooled to a normal temperature at a preset temperature (for example, 800 degrees) by slow cooling unloading, in which the mold and glass are vacuum-suctioned in a heating chamber. It can be taken out and cooled gradually.

In one embodiment, the cooling unit 114 heats the chiller at a predetermined supply speed (for example, 40 (L / min)) when necessary under the control of the control unit 130 and heats the upper near-infrared heater. It is also possible to increase the cooling rate by circulating in a part.

In one embodiment, the cooling unit 114 may deliver cooling water or air supplied from the cooling device 120 to the molding mold and the upper near-infrared heater.

In one embodiment, the cooling unit 114 may slowly cool the 3D curved curved glass molded in the molding unit 113 for a predetermined time (for example, 60 to 85 seconds) as an option in the process.

The molding base body 110 having the above-described configuration can be molded without the preheating unit 112 (that is, the preheating chamber), but the preheating unit (to make the production speed faster and less damage due to thermal shock) 112).

The cooling device 120 is driven under the control of the control device 130 to supply cooling water or air to the molding base body 110 to cool the 3D curved curved glass molded in the molding base body 110.

In one embodiment, the cooling device 120 may be provided with an outdoor unit (not shown in the drawing for convenience of description) to release heat generated during cooling of the 3D curved curved glass to the outside. Alternatively, the 3D curved curved glass processing system 100 having the above-described configuration may be separately provided with an outdoor unit connected to the cooling device 120.

In one embodiment, the cooling device 120 may use a chiller that cools to 40 degrees at a supply speed of 50 (L / min).

The control device 130 controls the driving of the molding base body 110 and the cooling device 120.

In one embodiment, the control device 130 includes a pneumatic cylinder, and controls the pneumatic cylinder to adjust the up and down stroke by a predetermined distance (for example, 100 to 200 (mm)) to up and down the heating chamber and the mold. I can do it.

In one embodiment, the control device 130 may be equipped with an MCU to perform Arduino control and various relay control, and may also have 1 point of preheating and 2 points of molding by temperature control.

In one embodiment, the control device 130 is provided with a heating setting screen, it is possible to adjust the output (Power, Kw) value of the near-infrared heater, the time, etc. can be individually set, the temperature and temperature for each zone (zone) The power (Kw) of the near-infrared heater related to the adjustment may be set, and a slow cooling process screen may also be provided to set the slow cooling process.

The 3D curved curved glass processing system 100 having the configuration as described above may further include a painting device 140.

The coating device 140 is driven under the control of the control device 130 to coat the flat glass before molding on the molding base body 110.

In one embodiment, the coating device 140 is equipped with a spray coating equipment, spraying a protective film (for example, titanium dioxide (TiO ₂ ), etc.) to prevent surface contamination or surface damage, or radiant heat efficiency of the near infrared heater To increase (ie, to absorb more radiant heat), a coating such as spraying black ink may be performed.

In one embodiment, the painting device 140 is a BM, black ink coating device for light leakage shielding by three-axis painting (curved coating), a light reflection (AR; Anti-Reflection) function on the front side, and prevention of fingerprint contamination ( AFP (Anti Finger Printing) and a material that facilitates fingerprint and decontamination (EC) can be coated on the surface of the 3D curved curved glass.

The 3D curved curved glass processing system 100 having the configuration as described above is a 3D curved curve formed by the molding base body 110 after performing cleaning, appearance inspection, chemical strengthening, back printing, etc. as a post-process. A functional film is bonded to the front surface of the glass, and then auto clave (defoaming), front wet AR, temporary hardening, wet AF, main curing, inspection, packaging and shipping can be performed. .

The 3D curved curved glass processing system 100 having the configuration as described above is equipped with a 3-axis bonding equipment, and a functional film (for example, AR, AF) on the front surface of the 3D curved curved glass formed by the molding base body 110. A film working device for bonding a film) may be further included (for convenience of explanation, not shown in the drawings).

3D curved curved glass processing system 100 having the configuration as described above, 3D S-curved / twisted cover glass by 3D curved processing using RVCP method and painting method when manufacturing cover glass for automobile large display. By implementing it so that it can be manufactured, there is no need to polish the surface because no contamination occurs on the glass surface with one mold, and semi-permanent mold life is possible.

The 3D curved curved glass processing system 100 having the configuration as described above, differentially and locally increases the temperature to the preheating function and softening point in the forming base body 110, and rapidly rises within a preset time (for example, 60 seconds), By compressing and slowly cooling with a vacuum suction method or an upper mold (or a pressing bar), it is easy to bend even when a large curved glass is a thin plate, and it is possible to solve the problem of restoration and warping even at high temperature molding.

The 3D curved curved glass processing system 100 having the above-described configuration uses a near-infrared heater as a heat source used for forming and preheating the 3D curved surface, and is used on the rear surface of the heater to maximize radiant heat of the near-infrared heater. A radiant plate with a pure gold plating is used, and a radiant heat heating near infrared heater that permanently maintains the life of a heater made of quartz by attaching a device (cooling unit 114) for supplying water cooling and air to the near infrared heater can be used.

3D curved curved glass processing system 100 having the configuration as described above, by the control unit 130, in order to complete the molding of a large curvature within the same time, to separate the local heating and adjust the voltage I can do it.

The 3D curved curved glass processing system 100 having the configuration as described above includes a pressing device for matching a pressing shape of a place having a large curvature (eg, R50mm or twisted shape) with a mold, and a metal pipe. It can be used to coat with a special material.

The 3D curved curved glass processing system 100 having the above-described configuration includes a black ink for shortening the molding time by increasing the absorption of a near infrared heat source and a coating for preventing surface contamination and surface damage occurring during molding, and The coating device 140 for coating the solution may be installed before the preheating unit 112.

3D curved curved glass processing system 100 having the configuration as described above,

8 is a view for explaining a 3D curved curved glass processing method according to an embodiment of the present invention.

Referring to FIG. 8, the control device 130 controls the driving of the molding basic body 110 and the cooling device 120 (S801).

In performing the drive control in step S801 described above, the control device 130 controls the pneumatic cylinder to adjust the up and down stroke by a predetermined distance (for example, 100 to 200 (mm)) to up and down the heating chamber. Can give.

In performing the drive control in the above-described step S801, in the control device 130, it is possible to perform the Arduino control and various relay control by the MCU, it is also possible to perform temperature control with 1 point of preheating and 2 points of molding. .

In performing the drive control in the above-described step S801, the control device 130 can output the near infrared heater setting using the heating setting screen, the time and the like can be individually set, and the temperature for each zone. And the power (Kw) of the near-infrared heater related to temperature control may be set. In addition, in the control device 130, a slow cooling process may be set using a slow cooling process diagram screen.

When the driving control is performed in the above-described step S801, the molding basic body 110 is driven under the control of the control device 130 to mold the raw glass into 3D curved curved glass (S802).

In forming the 3D curved curved glass in the above-described step S802, in the molding basic body 110, the fabric glass can be formed into 3D S-curved / twisted cover glass by 3D curved processing using the RVCP method. You can.

In forming the 3D curved curved glass in the above-described step S802, the molding base body 110 uses a special heat source such as a near-infrared heater method to set a predetermined time in one mold in an ambient temperature atmosphere (for example, Fabric glass can be molded into 3D curved curved glass within 2 minutes of pure molding time).

In performing the molding of the 3D curved curved glass in the above-described step S802, in the case where the in-vehicle display is curved and enlarged (for example, 30 inches or more) and there is an abrupt curvature, in the molding basic body 110, FIG. Using a mold made of a special material as shown in 2 (e.g., one of stainless steel (SUS), ceramic (CERAMIC), aluminum (AL), etc.) (e.g., a mold for 34 inches), the upper crimping Fabric glass can be molded into 3D curved glass.

In forming the 3D curved curved glass in the above-described step S802, in the forming base body 110, the output (heat source capacity) is 33 (2.5 (Kw)), 33 copies, totaling 82.5 (Kw), and the coil temperature is about 2000. 3D fabric glass using a near-infrared heater method of ~ 2200 degrees and using a heating furnace made of a special material (for example, a mold coated with an oxide (for example, ceramic, etc.) on a material such as stainless steel (SUS304)) It can be molded from curved curved glass.

In performing the molding of the 3D curved curved glass in the above-described step S802, the molding base body 110 can vacuum-suction the mold and the fabric glass using a vacuum pump, at this time 680 (mmHg) two A vacuum pump can be used to set the vacuum attainment pressure to a preset pressure value (eg, 1.3 (KPa)).

In forming the 3D curved curved glass in the above-described step S802, in the molding basic body 110, the fabric glass is positioned by aligning the push bar within a preset time (for example, 20 seconds). It can be arranged and input.

In performing the molding of the 3D curved curved glass in the above-described step S802, in the loading unit 111 provided in the molding base body 110, as shown in FIG. 4, a preset temperature (eg, 400 Up to FIG.) Can be loaded to the fabric glass, and then, in the preheating unit 112 provided in the molding base body 110, as shown in FIG. 5, a preset temperature (eg, 400 degrees) ) May preheat the glass loaded in the loading unit 111. Then, the molding part 113 provided in the molding base body 110, as shown in Figure 6, the glass preheated in the preheating section 112 at a predetermined temperature (for example, 700 ~ 900 degrees) It can be molded into 3D curved curved glass.

In forming the 3D curved curved glass in the above-described step S802, in the preheating unit 112, the temperature of the atmosphere in the heating chamber (ie, the preheating chamber) is a preset temperature (for example, 250 to 400 degrees). The glass loaded in the loading unit 111 can be preheated for a predetermined time (for example, about 2 minutes) while maintaining the preheating chamber, and the preheating chamber raises the near infrared (NIR) heater to about 62KW to 400 degrees. Can give. Accordingly, in the forming unit 113, the curved forming portion of the glass preheated in the preheating unit 112 by raising the atmospheric temperature in the heating chamber (that is, the forming chamber) to a preset temperature (for example, 700 to 900 degrees). It can be concentrated and heated locally, and the molding chamber can raise the near infrared (NIR) heater up to 900 degrees at about 128KW.

In performing the molding of the 3D curved curved glass in the above-described step S802, in the forming unit 113, the weight drop and the vacuum rise to a preset temperature (for example, 700 to 900 degrees) to the self-weight drop and The glass preheated in the preheater 112 may be molded by vacuum suction. At this time, the molding unit 113 can tilt the molding mold by a predetermined angle so that the local heating portion of the glass preheated in the preheating unit 112 is settled on the molding mold by self-weight drop, and the control of the control unit 130 (In other words, the molding mold can be moved along the rail according to the control of the method of moving on the rail according to the heating recipe setting.) Also, the vacuum suction to the molding mold under the control of the control device 130 It can adsorb.

In performing the molding of the 3D curved curved glass in the above-described step S802, in the forming unit 113, the vacuum suction for a predetermined time (for example, 20 seconds) and simultaneously a three-axis ceramic roll press or stainless (SUS) ) It may be pressurized with a roll press (inner, pressing jig) coated with an oxide (for example, ceramic) on a bar.

In performing the molding of the 3D curved curved glass in the above-described step S802, the molding unit 113 maintains molding in the vacuum suction and the upper and lower mold hydraulic bonding for a predetermined time (for example, 30 seconds). You can give.

In performing the molding of the 3D curved curved glass in the above-described step S802, the molding unit 113 discharges the 3D-shaped curved glass within a preset time (for example, 20 seconds) to produce a 3D sheet. The total time required to perform the molding into the curved glass of the shape can be about 5 minutes or less (preferably 2 to 3 minutes in the optimal range of the pure molding operation time).

In performing the molding of the 3D curved curved glass in the above-described step S802, the loading unit 111 may load the fabric glass and transfer it only to the preheating unit 112, whereby the preheating unit 112 , By raising the temperature from room temperature to 450 degrees, the glass loaded in the loading unit 111 may be preheated for a predetermined time (for example, 30 seconds). Thereafter, in the forming unit 113, the preheating unit 112 is heated for a predetermined time (for example, 30 seconds) while increasing from a preheating temperature of 250 to 400 degrees to 700 to 900 degrees, which is a temperature near the softening point according to the glass type. Preheated glass can be molded into 3D curved glass.

After performing the molding of the 3D curved curved glass in the above-described step S802, the cooling apparatus 120 drives under the control of the control device 130 to supply cooling water or air to the molding base body 110 to form the molding base body. The 3D curved curved glass molded at 110 is cooled (S803).

In cooling the 3D curved curved glass in the above-described step S803, in the molding base body 110, the 3D curved curved glass can be cooled by water-cooling by cooling water supplied from the cooling device 120 or air-cooling by air, , Radiation heat can be reflected by the metal plate formed on the upper part, and heat can be discharged to the outside by the heat exhaust mechanism formed on the ceiling part.

In cooling the 3D curved curved glass in the above-described step S803, in the cooling unit 114 provided in the forming base body 110, as shown in FIG. 7, cooling water or air supplied from the cooling device 120 is supplied. The 3D curved curved glass molded by the molding unit 113 may be cooled after being transferred.

In cooling the 3D curved curved glass in the above-described step S803, the cooling unit 114 may cool to a normal temperature at a preset temperature (for example, 800 degrees) by slow cooling unloading, wherein the mold and The glass can be taken out of the heating chamber in a vacuum-suctioned state (or a state in which vacuum suction is released) and gradually cooled.

In cooling the 3D curved curved glass in the above-described step S803, in the cooling unit 114, a predetermined supply speed (eg, 40 (L / min)) when necessary under the control of the control device 130 The cooling rate may be increased by circulating the furnace chiller to the heat generating part of the mold and the upper near-infrared heater.

In cooling the 3D curved curved glass in step S803 described above, the cooling unit 114 may deliver cooling water or air supplied from the cooling device 120 to the molding mold and the upper near-infrared heater.

In cooling the 3D curved curved glass in step S803 described above, in the cooling unit 114, the 3D curved surface molded in the molding unit 113 for a predetermined time (for example, 60 to 85 seconds) as an option in the process. Curved glass can also be cooled slowly.

As described above, the embodiment of the present invention is not implemented only through the above-described apparatus and / or operating method, and a program for realizing a function corresponding to the configuration of the embodiment of the present invention, a recording medium in which the program is recorded, etc. It may be implemented, such an implementation can be easily implemented by those skilled in the art to which the present invention belongs from the description of the above-described embodiment. Although the embodiments of the present invention have been described in detail above, the scope of rights of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concept of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

Claims (6)

A molding basic body for molding the fabric glass into 3D curved curved glass according to driving control; A cooling device for cooling the 3D curved curved glass formed by the molding base body by supplying cooling water or air to the molding base body according to driving control; And 3D curved curved glass processing system including a control unit for controlling the driving of the molding base and the cooling device. According to claim 1, wherein the molding base body, A metal plate formed on the upper portion to reflect radiant heat; 3D curved curved glass processing system characterized by comprising a heat exhaust mechanism for discharging heat to the outside by forming on the ceiling portion. According to claim 1, wherein the molding base body, A 3D curved curved glass processing system comprising a vacuum pump for vacuum suction adsorption of mold and fabric glass. According to claim 1, wherein the molding base body, 3D curved curved glass processing system characterized by circulating the cooling water or air supplied from the cooling device to the molding mold and the upper near infrared heater. According to claim 1, wherein the molding base body, A 3D curved curved glass processing system characterized by performing curved molding of a curved shape by differently heating conditions by dividing the near infrared heater into a plurality of zones. The control device controls the operation of the molding base body and the cooling device; Forming the raw glass into 3D curved curved glass according to the driving control of the control device by the molding basic body; And And cooling the 3D curved curved glass molded by the molding basic body by supplying cooling water or air to the molding basic body according to driving control of the control device.

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