KR101206328B1 - Cover glass manufacturing device - Google Patents

Abstract

Auxiliary preheating chamber for heating in the order of preheating, forming, and cooling while sequentially transferring the mold made of the lower mold and the upper mold into which the tempered glass material is injected into the chamber where nitrogen gas is continuously introduced. The preheater, the second preheater, the third preheater, the molding part, the first cooling part, the second cooling part, and the auxiliary cooling chamber are sequentially formed,
The first to third preheating part, the molding part, the first and second cooling parts are provided with a plurality of lower heat panels on which the mold body is mounted on the bottom surface of the chamber, and the upper heat panels moving up and down by a plurality of actuators. Characterized in that the installation is configured to correspond to the lower heat panel.
According to the present invention, even if the cover glass is molded using a mold body, it is possible to reduce the defective rate, and also by using a curved mold having a curved portion, the material is subjected to side pressure, rolling pressure, inflexion part heating, press blow The method can be expected to form a cover glass having a curved portion on one side or both sides very easily and precisely.

Description

Cover glass manufacturing device for mobile phones having curved portions on one side or both sides

The present invention relates to a cover glass forming apparatus for a mobile phone having one side curved surfaces on both sides, and more particularly, to reduce the cost of the mold while producing a glass cover glass having curved surfaces on one side or both sides, and easily curved surfaces of various radii. It relates to a mobile phone cover glass molding apparatus having a curved portion on one side or both sides to be molded.

Currently, the cover of the mobile phone is gradually increasing the use of glass cover glass that can improve the product quality by improving the robustness and beauty by removing from the resin cover.

Flat glass can be mass-produced by using a rolling roller to be extruded to a desired thickness. However, in the case of glass cover glass having curved portions on one or both sides, a base material is introduced into a mold body consisting of a lower mold and an upper mold. Molding.

However, the prior art has to produce a new mold every time the radius of the curved portion of the cover glass changes, so that a huge mold cost is spent when changing the design, causing the production cost of the product to increase.

Therefore, the present invention for solving the above problems is easy to manufacture a cover glass for a mobile phone, in particular, the shape of the curved portion of the cover glass is easy to have a curved portion on one side or both sides to cope with low cost even if the radius of the curved portion is variable An object of the present invention is to provide a cover glass molding apparatus for a mobile phone.

According to an aspect of the present invention,

Auxiliary preheating chamber for heating in the order of preheating, forming, and cooling while sequentially transferring the mold made of the lower mold and the upper mold into which the tempered glass material is injected into the chamber where nitrogen gas is continuously introduced. The preheater, the second preheater, the third preheater, the molding part, the first cooling part, the second cooling part, and the auxiliary cooling chamber are sequentially formed,

The first to third preheating part, the molding part, the first and second cooling parts are provided with a plurality of lower heat panels on which the mold body is mounted on the bottom surface of the chamber, and the upper heat panels moving up and down by a plurality of actuators. Characterized in that the installation is configured to correspond to the lower heat panel.

According to the present invention, even if the cover glass is molded using a mold body, it is possible to reduce the defective rate, and also by using a curved mold having a curved portion, the material is subjected to side pressure, rolling pressure, inflexion part heating, press blow The method can be expected to form a cover glass having a curved portion on one side or both sides very easily and precisely.

1 is a front schematic view showing a first embodiment of the present invention.
2 is a plan schematic view showing a first embodiment of the present invention;
3 is a view illustrating a process of forming a cover glass by a first embodiment;
4 shows a second embodiment of the present invention;
5 shows a third embodiment of the present invention;
6 shows a fourth embodiment of the present invention;
7 shows a fifth embodiment of the present invention;
8 is a view showing an embodiment of a fifth embodiment of the present invention.
9 is a view showing an embodiment of a fifth embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, FIGS. 1 to 9.

Since the present invention is divided into the first to fifth examples according to the embodiment, each case will be described as an example.

◆ ◆ first embodiment

1 to 3 show a first embodiment,

Preheating while sequentially transporting the mold body 20 consisting of the lower mold 21 and the upper mold 22 into which the base material 23 of tempered glass material is introduced into the chamber 1 where nitrogen gas is continuously introduced. Auxiliary preheating chamber (2), first preheating unit (3), second preheating unit (4), third preheating unit (5), molding unit (6), first cooling unit (7), the second cooling unit (8), the secondary cooling chamber (9) are sequentially formed,

The first to third preheating parts 3 to 5, the molding part 6, and the first and second cooling parts 7 and 8 may include a plurality of lower heat panels 11a to which the mold body 20 is mounted. 11f) is installed on the inner bottom surface of the chamber 1, and upper heat panels 12a to 12f that are moved up and down by a plurality of actuators 10a to 10f correspond to the lower heat panels 11a to 11f. It is characterized by the configuration.

The actuators 10a to 10f may be operated by a hydraulic cylinder or a servomotor.

The inside of the chamber 1 maintains a temperature of about 300 ℃, nitrogen gas (N2) is continuously introduced into the interior.

The mold body 20 (the state in which the plate-shaped or granular base material 23 is inserted between the lower mold 21 and the upper mold 22) into the chamber 1 is introduced into the auxiliary preheating chamber 2, and then The auxiliary preheating chamber 2 → the first preheating unit 3 → the second preheating unit 4 → the third preheating unit 5 → the molding unit 6 → the first cooling unit 7) → The second cooling unit 8 → is transferred to the auxiliary cooling chamber 9, and in this process, the base material 23 is heated and molded into a desired shape, that is, a cover glass having curved portions on one side or both sides, and the eject robot It is taken out by.

The auxiliary preheating chamber 2 preheats the mold body 20 to a temperature of about 300 ° C., the first preheating part 3 preheats to a temperature of about 400 ° C., and the second preheating part 4 The preheating is performed at a temperature of about 500 to 550 ° C., and the third preheating part 5 is preheated to a temperature of about 600 to 650 ° C., and the molding part 6 causes the mold body 20 to have a temperature of about 700 to 800 ° C. It is pressurized to a predetermined pressure while heating to a molding temperature so that the base material 23 is molded into a desired shape.

The first cooling unit 7 and the second cooling unit 8 gradually cool the mold body 20 that has passed through the molding unit 6, and the mold body 20 naturally cools in the auxiliary cooling chamber 9. The auxiliary cooling chamber 9 is a place where the mold body 20 is gradually cooled to a temperature of about 50 ° C from 300 ° C.

The temperature of the mold body 20 finally taken out by the eject robot is about 70 to 80 degrees or less.

The actuator 10 may be implemented to operate by a hydraulic cylinder or a servomotor. The hydraulic cylinder is difficult to precisely control, but suitable for mass production of a product, and the servomotor has an advantage of implementing precise control.

3 is a view illustrating a state in which a curved portion is formed on one side or both sides of a cover glass according to the first embodiment of the present invention, in which a mold body 20 into which a base material 23 of a flat plate or granular form is injected is heated and formed. It can be seen that the cover glass having a curved portion is formed during the step and cooling steps, and the temperature applied to the base material 23 gradually increases in the heating step, and then the base material 23 maintains the molding temperature in the molding step, and then after the molding step. It can be seen that the starting material 23 is cooled.

◆ Second Embodiment ◆

4 shows a second embodiment of the present invention,

A curved mold 50 provided at one end or both ends thereof, and having a pre-heated plate-shaped material 52 placed on an upper surface thereof;

A fixing part 60 having a fixing bar 62 which fixes one end of the material 52 during molding while moving up and down by the actuator 61;

It is provided with a pressing piece 72 which moves up and down by the actuator 71 to apply a one-sided load to one side end of the material 52 during molding so that the material 52 is in close contact with the curved part 51 and the curved part is formed. One press unit 70; Characterized in that configured.

In the second embodiment configured as described above, the curved surface portion of the cover glass is banded by using the curved mold 50 having the upper portion opened without using a mold formed of upper and lower molds.

The fixing part 60 and the pressing part 70, which are the components, are installed in a hermetically sealed chamber, and an upper surface of the curved mold 50 introduced into the chamber is a preheated plate-shaped material ( 52) is placed.

In the molding operation, the fixing bar 62 forming the fixing part 60 is lowered by the operation of the actuator 61 to fix one end of the material 52, and the pressing piece 72 forming the pressing part 70 is The actuator 71 descends and exerts a force on the end of the material 52.

As a result, while the material 52 existing in the preheated state is lowered by the pressing force of the pressing piece 72, the curved portion of the cover glass is bent and formed while being closely adhered to the curved portion 51 of the curved mold 50.

◆ ◆ third embodiment

5 shows a third embodiment of the present invention,

A curved mold 50 provided at one end or both ends thereof, and having a pre-heated plate-shaped material 52 placed on an upper surface thereof;

A fixing part 60 having a fixing bar 62 which fixes one end of the material 52 during molding while moving up and down by the actuator 61;

It moves up and down by the actuator 81 moving horizontally along the guide while rolling in a state of being in close contact with the surface of the material 52 during molding so that the material 52 is in close contact with the curved part 51 and the curved part is formed. Rolling pressurizing portion 80 having a pressure roller 82 to lose; Characterized in that configured.

The fixing part 60 and the rolling pressing part 80 of the third embodiment are also installed in the hermetically sealed chamber, not shown, and the upper surface of the curved mold 50 introduced into the chamber has a preheated plate-like material ( 52) is placed.

In the molding operation, the fixing bar 62 of the fixing part 60 is lowered by the actuator 61 so that the material 52 placed on the upper surface of the curved mold 50 fixes one end, and the rolling pressing part 80 is fixed. As the actuator 81 forming the lowering of the pressure roller 82 moves along the guide to the left and right, the material 52 placed on the curved mold 50 is pressed against the curved surface 51 to have a curved surface. The cover glass is molded.

The actuator 81 is moved left and right along the guide by a power source not shown.

The curved mold 50 may have its own heating means, by which the raw material 52 can be directly heated to the molding temperature.

◆ ◆ fourth embodiment

6 shows a fourth embodiment of the present invention,

A curved mold 50 provided at one end or both ends thereof, and having a pre-heated plate-shaped material 52 placed on an upper surface thereof;

A heating lamp 91 for emitting a heating light at a high temperature is installed around the curved portion 51, and the light emitted from the heating lamp 91 is concentrated on the curved portion of the curved portion of the material 52. A heating member 90 formed by installing a reflector 92 outside the heating lamp 91 to form curved portions on one side or both sides of the 52; Characterized in that configured.

In addition, the curved mold 50 has a suction passage 55 connected to the vacuum suction device on one side, and a vacuum chamber 56 communicating with the suction passage 55 is formed inside the curved mold 50. By forming a porous hole 54 on the curved portion 51 so as to communicate with the vacuum chamber 56, the material 52 adheres to the curved portion 51 by suction force through the porous hole 54, thereby bending. Characterized in that configured to lose.

In addition, the inside of the curved mold 50 is characterized in that the inner heater 53 for heating the curved portion 51 at a higher temperature than other parts is installed.

The fourth embodiment of the present invention is to heat the inflection point portion of the raw material 52 using the heating member 90 to be bent by its own weight.

The configured heating member 90 is installed inside the hermetically sealed chamber.

When the molding operation starts, the inner heater 53 of the curved mold 50 installed inside the chamber is operated to intensively heat the curved portion 51, and the heating lamp 91 constituting the heating member 90 is The light that is turned on and emitted from the heating lamp 91 is reflected by the reflector 92 and is concentrated on the inflection point portion of the material 52.

Accordingly, the ductility of the inflection point portion of the material 52 is the weakest.

At this time, when the vacuum pressure is applied to the suction passage 55, the vacuum pressure is applied to the porous hole 54 formed in the curved portion 51, and the material 52 is curved to form the curved mold 50 by the vacuum pressure. While being in close contact with the curved portion 51 of the curved surface is to be made.

◆ ◆ fifth embodiment

7 shows a fifth embodiment of the present invention,

A curved mold 50 provided at one end or both ends thereof, and having a pre-heated plate-shaped material 52 placed on an upper surface thereof;

A fixing part 60 having a fixing bar 62 which fixes one end of the material 52 during molding while moving up and down by the actuator 61;

The press frame 102 formed in a shape corresponding to the curved mold 50 is installed to move up and down by an actuator 71, and a supply pipe for supplying nitrogen gas N2 to the press frame 102 is provided ( Hollow chamber 103 connected to the 104 is formed, and a plurality of discharge holes 105 for discharging nitrogen gas (N2) to the curved surface bending portion of the material 52 is formed in the bottom portion of the pressing frame 102 Press blow blower 100; Characterized in that configured.

In addition, the curved mold 50 has a suction passage 55 connected to the vacuum suction device on one side, and a vacuum chamber 56 communicating with the suction passage 55 is formed inside the curved mold 50. By forming a porous hole 54 on the curved portion 51 so as to communicate with the vacuum chamber 56, the material 52 adheres to the curved portion 51 by suction force through the porous hole 54, thereby bending. Characterized in that configured to lose.

The fifth embodiment configured as described above is to band-form the raw material 52 using the discharge pressure of nitrogen gas discharged from the pressurized blower 100.

When the molding operation is started, the fixing bar 62 constituting the fixing part 60 is lowered by the actuator 61 to fix one end of the material 52, and in this state, the actuator 101 of the pressure blower part 100. ) Lowers the pressing frame 102.

As the pressurized frame body 102 descends, as the nitrogen gas supplied through the supply pipe 104 is discharged toward the curved surface 51 through the hollow chamber 103 and the discharge hole 105, the end portion of the material 52 is While being bent by nitrogen gas, it is in close contact with the curved portion 51 to be banded.

At this time, as the vacuum pressure is applied to the internal vacuum chamber 56 of the curved mold 50, the vacuum pressure is applied through the porous hole 54, and the bending portion of the material 52 is completely in contact with the curved portion 51. While forming the curved surface without cracking.

The porous hole 54 and the discharge hole 105 is preferably molded in a fine size.

Meanwhile, FIG. 8 illustrates an embodiment in which the fifth embodiment is put into an actual production process, and a plurality of molding chambers 200 having the fixing part 60 and the pressure blowing part 100 are arranged side by side. It is characterized in that the injection / extraction robot 111 for inserting or taking out the curved mold 50, while moving to the left and right along the guide 110 in front of the molding chamber (200).

The curved mold 50 injected into the molding chamber 200 is heated while being heated to the molding temperature in each of the molding chambers 200 to be bent.

In addition, Figure 9 shows another embodiment in which the fifth embodiment is installed in the production process,

Further forming a preheating chamber 120 for preheating the curved mold 50 on which the material 52 is placed in each of the plurality of molding chambers 200 having the fixing part 60 and the pressure blower part 100, The molding chambers 200 are arranged side by side, and an injection robot for introducing the curved mold 50 into the molding chamber 200 while moving from side to side along the guide 110 at the inlet side of the molding chamber 200 ( 112 is installed, and the take-out robot 113 for discharging the curved mold 50 formed by the curved portion while moving left and right along the guide 110 on the exit side of the molding chamber 200 is characterized in that the configuration .

Such another embodiment may further shorten the cover glass molding time by further forming the preheating chamber 120, and the injection robot 112 and the extraction robot 113 are separately installed at the inlet and outlet sides of the chamber 200. Therefore, it is possible to further improve the accuracy of the input and take out of the material.

In the second to fifth embodiments to be applied to the present invention, the curved surface portion is banded to one side or both sides of the cover glass by using the curved mold 50 having an upper portion.

This embodiment can significantly reduce the mold cost by not using the mold body consisting of the upper, lower mold, and also to quickly respond to this when the radius of the curved surface of the product can be produced to produce the product.

1: chamber, 2: auxiliary preheating chamber,
3: first preheater, 4: second preheater,
5: third preheating part, 6: forming part,
7: first cooling part, 8: second cooling part,
9: auxiliary cooling chamber, 10: actuator,
11: lower heat panel, 12: upper heat panel,
20: mold body, 23: starting material,
50: curved mold, 51: curved portion,
52: material, 53: internal heater,
54: porous hole, 55: suction passage,
56: vacuum chamber, 60: fixed part,
61: actuator, 62: fixed bar,
70: press part, 80: rolling press part,
81: actuator, 82: pressure roller,
90: heating member, 91: heating lamp,
92: reflector, 100: pressure blower,
101: actuator, 102: pressurized body,

Claims (11)

delete delete A curved mold 50 provided at one end or both ends thereof, and having a pre-heated plate-shaped material 52 placed on an upper surface thereof;
A fixing part 60 having a fixing bar 62 which fixes one end of the material 52 during molding while moving up and down by the actuator 61;
It is provided with a pressing piece 72 which moves up and down by the actuator 71 to apply a one-sided load to one side end of the material 52 during molding so that the material 52 is in close contact with the curved part 51 and the curved part is formed. One press unit 70; Cover glass molding apparatus for a mobile phone having a curved portion on one side or both sides, characterized in that configured as.
A curved mold 50 provided at one end or both ends thereof, and having a pre-heated plate-shaped material 52 placed on an upper surface thereof;
A fixing part 60 having a fixing bar 62 which fixes one end of the material 52 during molding while moving up and down by the actuator 61;
It moves up and down by the actuator 81 moving horizontally along the guide while rolling in a state of being in close contact with the surface of the material 52 during molding so that the material 52 is in close contact with the curved part 51 and the curved part is formed. Rolling pressurizing portion 80 having a pressure roller 82 to lose; Cover glass molding apparatus for a mobile phone having a curved portion on one side or both sides, characterized in that configured as.
A curved mold 50 provided at one end or both ends thereof, and having a pre-heated plate-shaped material 52 placed on an upper surface thereof;
A heating lamp 91 that emits heating light is provided around the curved portion 51, and the light emitted from the heating lamp 91 is concentrated on the curved portion of the curved portion of the material 52. A heating member 90 formed by installing a reflector 92 on the outside of the heating lamp 91 such that the curved portion is formed on one or both sides of the heating lamp 91; Cover glass molding apparatus for a mobile phone having a curved portion on one side or both sides, characterized in that configured as.
The curved mold 50 is provided with a suction passage 55 connected to a vacuum suction device on one side, and the vacuum chamber 56 communicating with the suction passage 55 has a curved mold 50. It is formed therein, the hole 52 is formed on the curved surface 51 in communication with the vacuum chamber 56, the material 52 is in close contact with the curved surface 51 by the suction force through the porous hole 54 Cover glass forming apparatus for a mobile phone having a curved portion on one side or both sides, characterized in that the bending is made.
The curved surface portion of claim 5, wherein an inner heater 53 is further provided inside the curved mold 50 to heat the curved portion 51 at a higher temperature than other portions. Cell phone cover glass molding apparatus having.
A curved mold 50 provided at one end or both ends thereof, and having a pre-heated plate-shaped material 52 placed on an upper surface thereof;
A fixing part 60 having a fixing bar 62 which fixes one end of the material 52 during molding while moving up and down by the actuator 61;
The press frame 102 formed in a shape corresponding to the curved mold 50 is installed to move up and down by an actuator 71, and a supply pipe for supplying nitrogen gas N2 to the press frame 102 is provided ( Hollow chamber 103 connected to the 104 is formed, and a plurality of discharge holes 105 for discharging nitrogen gas (N2) to the curved surface bending portion of the material 52 is formed in the bottom portion of the pressing frame 102 Press blow blower 100; Cover glass molding apparatus for a mobile phone having a curved portion on one side or both sides, characterized in that configured as.
According to claim 8, The curved mold 50 is provided with a suction passage 55 connected to the vacuum suction device on one side, the vacuum chamber 56 in communication with the suction passage 55 is a curved mold 50 It is formed therein, the hole 52 is formed on the curved surface 51 in communication with the vacuum chamber 56, the material 52 is in close contact with the curved surface 51 by the suction force through the porous hole 54 Cover glass forming apparatus for a mobile phone having a curved portion on one side or both sides, characterized in that the bending is made.
The method according to claim 8, wherein the plurality of molding chambers 200 having the fixing part 60 and the pressure blower part 100 are arranged side by side, and left and right along the guide 110 in front of the molding chambers 200. Cover glass forming apparatus for a mobile phone having a curved surface portion on one side or both sides, characterized in that the installation / take-out robot 111 for inserting or taking out the curved mold 50 while moving.
The preheating chamber (120) according to claim 8, wherein the preformed curved mold (50) on which the material (52) is placed is placed in each of the plurality of molding chambers (200) having the fixing part (60) and the pressure blower part (100). ) Is formed, the forming chambers 200 are arranged side by side, and the curved mold 50 is moved from side to side along the guide 110 at the inlet side of the forming chamber 200 to form the inside of the forming chamber 200. Install an injection robot 112 for feeding into the robot, and a take-out robot 113 for discharging the curved mold 50 formed with curved surfaces while moving from side to side along the guide 110 to the exit side of the molding chamber 200; Cover glass molding apparatus for a mobile phone having a curved portion on one side or both sides, characterized in that configured.

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