KR102257297B1 - Forming device including a sealed input chamber - Google Patents

Abstract

A molding apparatus of the present invention comprises: a main chamber in which at least one of a preheating unit for preheating a mold unit containing a molded object, a molding unit for pressing the mold unit to shape the molded object, and a cooling unit for cooling the mold unit are sequentially arranged in a first direction; and an input chamber connected to the inlet side of the main chamber along the first direction, wherein a direction in which the mold unit is supplied from the outside of the input chamber toward the input chamber and a direction in which the mold unit is supplied into the input chamber from the outside of the input chamber can be perpendicular to each other. When the sealed input chamber is provided, even if physical properties of the molded object are different, the generation of foreign substances and oxidation of the molded object can be suppressed as much as possible as a single molding device to respond to all requirements.

Description

Forming device equipped with a sealed input chamber {FORMING DEVICE INCLUDING A SEALED INPUT CHAMBER}

The present invention relates to a molding apparatus for molding an object to be molded stored in a mold.

The glass or lens having a curved portion may be used as a front cover, a rear cover, a camera lens, or the like of a smartphone.

When the object to be molded is placed in a mold and the mold is heated and pressurized, a desired 3D-shaped glass or lens can be molded.

In Korean Laid-Open Patent Publication No. 10-2019-0049050 (2019.05.09), an apparatus for 3D molding a flat plate-shaped object at an ultra-high temperature is described, but the elevator-type sealing structure of the present invention is not described.

The present invention is intended to improve the hermeticity of an input chamber in which a mold unit is inserted into the main chamber, and the mold unit or the injection chamber is filled with vacuum or an inert gas to suppress the occurrence of foreign substances and oxidation of the molded object as much as possible.

The sealed input chamber is optimally designed to ensure reliability and ease of operation.

In the molding apparatus of the present invention, at least one of a preheating unit for preheating a mold unit in which a molded object is housed, a molding unit for molding the molded object by pressing the mold unit, and a cooling unit for cooling the mold unit is a first direction. The main chamber is sequentially arranged along the; An input chamber connected to an inlet side of the main chamber along the first direction; It may include.

In one embodiment, the injection chamber includes a first opening and a second opening, the first opening is formed at a position connecting the main chamber and the injection chamber, and the mold unit is discharged from the injection chamber. It becomes the outlet of the injection chamber, and the second opening becomes the entrance of the injection chamber for inserting the mold unit into the injection chamber, and when viewed from the side of the main chamber, the first opening and the second opening Can be formed at different heights.

In an embodiment, a direction in which the mold unit approaches from the outside of the injection chamber and a direction in which the mold unit is inserted into the injection chamber may be orthogonal to each other.

As an embodiment of the molding apparatus of the present invention, at least one of a preheating unit for preheating a mold unit in which a molded object is housed, a molding unit for molding the molded object by pressing the mold unit, and a cooling unit for cooling the mold unit The main chamber is provided; An input chamber connected to the inlet side of the main chamber; A table part that is elevated inside the input chamber and on which the mold unit is placed; A cap portion closing a second opening for inserting the mold unit into the injection chamber from the outside of the injection chamber; It may include.

When the cap part is opened and the table part is raised, the internal space of the injection chamber is reduced, and gas inside the injection chamber is discharged through the second opening, and when the table part is lowered and the cap part is closed, the inside of the injection chamber The mold unit may be sealed in the housed state.

When a sealed injection chamber is provided, even if the physical properties of the object to be molded are different, it is possible to respond to all requirements as a single molding device, so that the occurrence of foreign matter or oxidation of the object to be molded can be suppressed as much as possible.

The sealed injection chamber has a structure that can minimize the number of moving parts, and the part to which each moving part is connected is secured by inserting a sealing member, and it is possible to avoid interference between moving parts, and to avoid being sensitive to oxygen exposure. It is possible to secure the molding quality of the molded product.

Since each part can be operated with only a linearly moving actuator, it is possible to secure long-term driving reliability, no special complex servo control logic is required, and the delay time that the mold unit stays at the input position can be reduced.

There is no delay time of the mold units at the entrance of the main chamber, the largest number of mold units per unit time can be processed, the minimum tact time can be secured, and the molding yield can be increased in various environments. .

1 is a front view showing only the main part of the molding apparatus of the present invention.
2 is a plan view illustrating the operation of the first fork pin and the second fork pin of the present invention.
3 is a side view for explaining the operation of the supply unit for the input chamber of the present invention.
4 is a plan view showing an injection chamber of the present invention.

Referring to FIGS. 1 to 4 together, the mold unit 700 may mold an object to be formed into a cover glass of a portable terminal, a lens, or the like. When the mold unit 700 is heated and pressurized, a part or all of the object to be formed accommodated in the mold unit 700 may be formed into a curved surface.

The object to be molded may include a camera lens, a glass having a curved portion, a watch cover glass, an automobile instrument panel glass, various measuring instrument cover glass, sapphire, a light-transmitting plate, a front cover and a back cover of a portable terminal. The object to be molded includes all cases in which the lens is molded from a lens, a semi-solid or liquid glass, and the type of the object to be molded is not a limitation of the present invention.

The mold unit 700 forming a curved portion on the object to be molded passes through the interior of the main chamber 3 and may be preheated, molded or cooled. A preheating unit, a forming unit, and a cooling unit may be sequentially arranged from the inlet side of the main chamber 3 toward the outlet side of the main chamber 3.

In the preheating unit, the mold unit 700 may be preheated to a preheating temperature. The molding unit may heat the mold unit 700 at a molding temperature. The molding unit may heat and press the mold unit 700 to form a molded object. A cooling unit may be provided on the downstream side of the molding unit to gradually cool the mold unit 700 on which the molding of the object to be formed is completed.

The preheating unit, forming unit, and cooling unit may include a lower block 510 installed on the bottom of the main chamber 3. The lower block 510 supports the mold unit 700 and may heat or cool the mold unit 700.

The upper block 310 provided in the preheating unit is elevated with respect to the main chamber 3 and may contact the mold unit 700 to perform a preheating function in a heat conduction manner. The upper block 310 provided in the cooling unit is raised and lowered with respect to the main chamber 3 and contacts the mold unit 700 to perform a cooling function in a heat conduction manner. The upper block 310 provided in the preheating unit or the cooling unit may exert a pressing force on the mold unit 700, but may contact the mold unit 700 in a no-load state from which its own weight or the like has been removed.

The upper block 310 or the lower block 510 may include a heater plate 313 that is equipped with a heater 314 and performs a heating function, and a cooling plate 311 that circulates coolant and performs a cooling function. The heat sink 312 may be inserted to adjust the contact area between the heater plate 313 and the cooling plate 311. A cooling plate 311 may be provided in each of the lower blocks 510, but a common cooling plate 311b facing all the lower blocks 510 may be provided.

The first direction is the x-axis direction as the transfer direction of the mold unit 700, the second direction perpendicular to the first direction is the y-axis direction located in the same plane as the transfer direction, and the third direction is the first direction and the second direction. It can be a height direction as a z-axis direction that is both perpendicular to the direction.

The molding apparatus of the present invention may include a main chamber 3 and an injection chamber 800. In the main chamber 3, at least one of a preheating unit, a forming unit, and a cooling unit may be sequentially arranged along the first direction. The input chamber 800 may be connected to the inlet side of the main chamber 3.

As an embodiment, the direction in which the mold unit 700 approaches the input chamber 800 from the outside of the injection chamber 800 (second direction), and the mold unit 700 is moved to the inside of the injection chamber 800. Insertion directions (third direction) may be orthogonal to each other.

A feature of the present invention is that the direction in which the mold unit 700 approaches from the outside of the injection chamber 800 and the direction in which the mold unit 700 is inserted into the injection chamber 800 are different directions and are orthogonal to each other. Point. This may improve the airtightness of the injection chamber 800 when forming a vacuum or injecting an inert gas. When providing the sealing portion 850 for airtightness, a portion where the sealing portion 850 should be installed can be minimized. Parts moving in the open portion of the injection chamber 800 may be sealed by the sealing unit 850 and may have a structure in which the sealing unit 850 is minimized.

In order to improve the airtightness of the injection chamber 800, the number of openings may be perforated. The input chamber 800 may include a first opening 801 and a second opening 802.

The first opening 801 is formed at a position connecting the main chamber 3 and the injection chamber 800, and becomes an outlet of the injection chamber 800 for discharging the mold unit 700 from the injection chamber 800, It may be a passage for transferring the mold unit 700 from the inside of the injection chamber 800 to the inside of the main chamber 3. The first opening 801 may be opened or closed by the closing shutter 710.

The second opening 802 may be an entrance of the injection chamber 800 through which the mold unit 700 is inserted from the outside of the injection chamber 800 to the inside. When viewed from the side of the main chamber 3, the first opening 801 and the second opening 802 may be formed at different heights. If the second opening 802 is formed at a higher position than the first opening 801, it may be easy to close the second opening 802 by raising and lowering the cap portion 890. In addition, it is possible to secure a height required for lifting the table portion 810. The lifting of the table portion 810 is like a syringe, and the second opening 802 can be compared to a syringe needle hole. The gas in the input chamber 800 may be discharged as the table unit 810 is raised or lowered. In order to vacuum the inside of the injection chamber 800 and inject an inert gas, there is an effect of emptying the inside of the injection chamber 800 every time by raising and lowering the table part 810 serving as a piston every time the mold unit 700 is injected. have. Even if the injection chamber 800 is not deliberately evacuated by the vacuum means, if the cap portion 890 is closed and the table portion 810 is lowered, the same effect as a piston type vacuum pump can be expected.

The injection chamber 800 must be opened at a portion where the injection chamber 800 faces the main chamber 3 and the first opening 801 may be closed by the injection shutter 710. The first opening 801 of the input chamber 800 is inevitably formed. However, the passage for introducing the mold unit 700 into the injection chamber 800 may be formed in any one of the second direction and the third direction, and the present invention provides the second opening 802 in the third direction. It is characterized by forming.

It is preferable that the supply unit 750 that supplies the mold unit 700 around the input chamber 800 transfers the mold unit 700 in the second direction. If, assuming the transfer in the first direction, the transfer direction of the main chamber 3 and the supply direction to the input chamber 800 are identical, so the length of the device in the first direction is lengthened, thereby reducing the space efficiency, and the movement of the operator is also long. May not be good for improving production yield.

When the transfer direction of the supply unit 750 is selected in a second direction perpendicular to the first direction, which is the transfer direction of the main chamber 3, the shape of the molding apparatus will be bent in a "b" shape at the entrance of the main chamber 3 Therefore, it is possible to reduce the size of the device and reduce the movement of workers.

On the other hand, assuming that the supply direction of the supply unit 750 is in the third direction, which is the height direction, there may be a height that is difficult to reach depending on the height of the operator, and consider the weight of the mold unit 700 and the transport structure in the third direction. If so, the third direction supply may not be an optimized direction.

On the other hand, when the conveying direction of the supply unit 750 is the second direction, when the direction of the second opening 802 is the second direction, the second opening 802 is closed with a separate shutter. I can think of it. However, it is difficult to secure airtightness at the contact surface of the shutter that is installed as homely, and since the size of the inner space of the injection chamber 800 is constant, a syringe effect by reciprocating the table unit 810 may not be expected at all.

A supply unit 750 may be provided to close the mold unit 700 to the outside of the input chamber 800. The input chamber 800 has a first surface, a second surface, and a third surface that are orthogonal to each other, a first opening 801 is formed on the first surface, and a supply unit 750 faces the second surface. , A second opening 802 may be formed on the third surface.

The first fork pin 820 and the second fork pin 730 will be described with reference to FIGS. 2 and 3.

The supply unit 750 may include a first fork pin 820 and a second fork pin 730. The first fork pin 820 may move along the second direction. The second fork pin 730 may move in a third direction perpendicular to the second direction. In this case, the mold unit 700 loaded on the first fork pin 820 may be transferred to the second fork pin 730.

The first fork pin 820 may include a plurality of first forks 721 spaced apart from each other, and the second fork pin 730 may include a plurality of second forks 732 spaced apart from each other.

Prevents collision between the first fork pin 820 and the second fork pin 730, allows them to overlap each other in the shape of a finger, and prevents collision with other fork pins when the mold unit 700 approaches other fork pins. You need a means to do it. To this end, the first fork 721 and the second fork 732 may have a height difference H.

When the first fork pin 820 and the second fork pin 730 approach, the first fork 721 may enter between two second forks 732 adjacent to each other protruding from the second fork pin 730. I can. The mold unit 700 seated on the first fork 721 faces the second fork 732 in a state spaced apart from the upper side of the second fork 732, due to the difference in height.

When the second fork pin 730 rises higher than the first fork pin 820, the mold unit 700 seated on the first fork pin 820 may be converted to a state in which the second fork pin 730 is seated. have. In spite of the facing of the two fork pins and the elevation of the second fork pin 730, collision avoidance of the mold unit 700 can be achieved.

The second opening 802 is opened on the upper surface of the injection chamber 800, and the upper surface of the injection chamber 800 and the height of the second fork pin 730 may be aligned as the second fork pin 730 rises. have. The mold unit 700 in which the reciprocating rod 719 is mounted on the second fork pin 730 may be moved toward the second opening 802 opened on the upper surface of the input chamber 800. Since the upper surface of the injection chamber 800 and the second fork pin 730 are different members, a separation distance G in the horizontal direction may occur. The separation distance G may be smaller than the width or diameter of the mold unit 700. Since the separation distance (G) is very small compared to the size of the mold unit 700, the mold unit 700 can cross the upper surface of the injection chamber 800 while moving smoothly without falling into the gap between the two members.

The table portion 810 may be raised and lowered toward the second opening 802 from the inside of the input chamber 800.

The cap portion 890 is raised and lowered toward the second opening 802 from the outside of the input chamber 800 and may close the second opening 802. The cap portion 890 may be a table portion 810 on which the mold unit 700 is seated and a lid surrounding the mold unit 700. The table portion 810 is raised and lowered inside the injection chamber 800, and the cap portion 890 may be raised or lowered from the outside of the injection chamber 800.

The lowering of the table portion 810 and the closing of the cap portion 890 may expect an effect of vacuumizing the inside of the injection chamber 800. The opening of the cap part 890 and the lifting of the table part 810 can be expected to discharge the gas inside the input chamber 800 and minimize the space. The mold unit 700 may be seated on the table portion 810 through the second opening 802 from the upper side of the injection chamber 800. The mold unit 700 seated on the table portion 810 may be transferred into the main chamber 3 by an input rod 715.

A sealing portion 850 may be provided to seal at least one of a position where the table portion 810 and the injection chamber 800 contact and a position where the cap portion 890 and the injection chamber 800 contact each other.

The table unit 810 may include a main table 811 and an auxiliary table 812. The main table 811 may be in close contact with the inner wall of the input chamber 800 so as to be movable. The auxiliary table 812 may protrude above the main table 811. The auxiliary table 812 is inserted into the second opening 802 when the main table 811 or the table portion 810 rises, and is aligned with the upper surface of the input chamber 800, thus preventing a stepped collision of the mold unit 700. I can. After the table portion 810 and the second opening 802 are aligned, the mold unit 700 may be moved to the auxiliary table 812, and preparation for the lowering of the table portion 810 may be completed.

3...main chamber 310...top block
311...Cooling plate 311b...Common cooling plate
312...heat sink 313...heater plate
314...heater 510...bottom block
700... mold unit 710... input shutter
715...feed rod 719...reciprocating rod
720...first fork pin 721...first fork
730...second fork pin 732...second fork
750...supply unit 800...filling chamber
801...first opening 802...second opening
810...table part 811...main table
812...Auxiliary table 850...Sealing part
890...cap part

Claims (10)

At least one of a preheating unit for preheating the mold unit in which the molded object is housed, a molding unit for forming the molded object by pressing the mold unit, and a cooling unit for cooling the mold unit are sequentially arranged in a first direction. chamber;
An input chamber connected to the inlet side of the main chamber; Including,
A first opening that is a passage connecting the main chamber and the input chamber is formed,
A second opening open to the upper side of the input chamber is provided,
The second opening is a hole for inserting the mold unit into the injection chamber,
A cap portion is provided that is raised and lowered toward the second opening from the outside of the input chamber,
A table portion for closing the second opening is provided,
The table portion rises from a first position to a second position while the mold unit is not supported, or lowers from a second position to a first position while supporting the mold unit,
The first position is a position to face the mold unit to the first opening,
The second position is a position to close the second opening,
When the table portion is lowered from the second position to the first position while supporting the mold unit, the cap portion is lowered toward the second opening to seal the second opening.
The method of claim 1,
A supply unit facing the mold unit close to the outside of the input chamber; Including,
The injection chamber has a first surface, a second surface and a third surface orthogonal to each other,
The first opening is formed on the first surface,
The supply unit faces the second surface,
A molding apparatus in which the second opening is formed on the third surface.
The method of claim 1,
A supply unit for transferring the mold unit to the input chamber in a second direction perpendicular to the first direction; Including,
The supply unit has a first fork pin and a second fork pin,
When the first fork pin moves in the second direction and the second fork pin moves in a third direction perpendicular to the second direction, the mold unit loaded on the first fork pin is moved to the second fork Molding device delivered by pins.
The method of claim 3,
The first fork pin includes a plurality of first forks spaced apart from each other,
The second fork pin includes a plurality of second forks spaced apart from each other,
The first fork and the second fork have a height difference,
When the first fork pin and the second fork pin approach, the first fork enters between two adjacent second forks protruding from the second fork pin, and the mold unit seated on the first fork Is faced with the second fork in a state spaced apart from the upper side of the second fork,
When the second fork pin rises higher than the first fork pin, the mold unit seated on the first fork pin is seated on the second fork pin.
The method of claim 3,
The second opening is open on the upper surface of the input chamber,
As the second fork pin rises, the upper surface of the input chamber and the height of the second fork pin are aligned,
A molding apparatus in which a reciprocating rod moves a mold unit seated on the second fork pin toward the second opening opened in the upper surface of the input chamber.
delete The method of claim 1,
A molding apparatus having a sealing unit that seals at least one of a position where the table unit and the injection chamber are in contact and a position where the cap unit and the injection chamber are contacted.
The method of claim 1,
The second opening is perforated in the upper side of the injection chamber,
There is provided a table portion that is raised and lowered inside the input chamber,
The table portion includes a main table and an auxiliary table,
The main table is movably in close contact with the inner wall of the input chamber,
The auxiliary table protrudes above the main table, is inserted into the second opening when the table portion is raised, and is aligned with the upper surface of the input chamber,
After the alignment, the mold unit is moved to the auxiliary table.
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