KR101190865B1 - Vacuum type film coating device and film coating method therewith - Google Patents

Abstract

The present invention relates to a double-sided vacuum film coating machine and a film coating method using the same, and having an LED module open to one side and mounted with an LED on a board therein and having a lower thin film laid on the upper side as an edge. Chamber, the upper chamber opened and lowered in the open one direction of the lower chamber and opened and closed inside, the thin film blown out by discharging the air inside the upper chamber and the air inside the lower chamber bounded by the thin film to the outside. It characterized in that it comprises an upper and lower vacuum portion to form an internal vacuum in a flat state, and an external air inlet portion to guide the external air supply into the upper chamber in a vacuum state so that the thin film is coated on the LED module through the pressure difference.
The present invention, unlike the prior art by forcibly discharging the internal air of the upper chamber and the lower chamber in order by the thin thin film to be coated on the LED module in order to keep the vacuum inflow air into the upper chamber LED By waterproofing the module, the adhesion between the thin film and the LED module can be improved.

Description

Double-sided vacuum film coating machine and film coating method using the same {VACUUM TYPE FILM COATING DEVICE AND FILM COATING METHOD THEREWITH}

The present invention relates to a double-sided vacuum film coating machine and a film coating method using the same, and more particularly, the vacuum by forcibly discharging the internal air of the upper chamber and the lower chamber separated by a thin thin film to be coated on the LED module in order It relates to a double-sided vacuum film coating machine and a film coating method using the same by improving the adhesion between the thin film and the LED module by injecting the air into the upper chamber while maintaining the waterproof film on the LED module.

Traffic signs, various information boards, advertising boards, etc. are displayed through means of printing or painting, and lighting is provided so that the contents can be easily seen at night.

As a specific means of installing the lighting, there is a method of installing a light bulb such as a fluorescent lamp inside a signboard such as a general advertising signboard so that the contents of the light pass through a cloth or thin plate (acrylic, etc.) on the front surface of which the light is displayed, or By installing a lighting device on the outside of the light to direct the display panel to identify the content.

By the way, there are a number of disadvantages in such a conventional lighting device, when the installation of a light bulb type lighting device such as a fluorescent lamp is very large in size and thickness is difficult to manufacture and install, short lifespan bulb There was a problem of manpower and costly according to maintenance, such as the need to replace from time to time. In addition, even when lighting is installed on the outside of the display panel, there is a lot of waste due to maintenance. Especially, in the case of traffic safety signs that must be legally standardized, the shape change is caused by external lighting. There is a serious problem that can lead to chaos.

Due to the above-mentioned problem, an alternative has been proposed to obtain power by using solar cells and to emit light by installing a light emitting diode (LED) on a display panel.

LED (LED) module, which is used in advertising boards or traffic signs, is attached with a thin film to form a waterproof layer after mounting the LED on a soft or hard board.As it is a rotating roller, the film is attached to the board. Many air layers are formed between the board and the board, resulting in poor adhesion. Therefore, there is a need to improve this.

The present invention has been made in order to improve the problems described above, by forcibly discharging the internal air of the upper chamber and the lower chamber separated by a thin film in order to keep the entire internal vacuum to inlet the outside air pressure It is an object of the present invention to provide a double-sided vacuum film coating machine and a film coating method using the same to improve the adhesion between the thin film and the LED module by waterproof coating the thin film on the LED module through the car.

Double-sided vacuum film coating machine according to the present invention: the lower chamber, which is opened to one side and equipped with an LED module mounted on the board (board) therein and supporting the thin film thinned to be placed on the upper side, the opening of the lower chamber The upper chamber which opens and descends in one direction and opens and closes the inside, and discharges the air inside the upper chamber and the air inside the lower chamber bounded by the thin film to the outside to keep the thin film flat. The upper and lower vacuum to form an internal vacuum in a state, and the outside air inlet for guiding the outside air supply into the upper chamber in a vacuum state so that the thin film is coated on the LED module through the pressure difference.

The upper and lower vacuum parts are branched from the upper vacuum line and the upper vacuum line connected to the upper chamber to guide the forced air discharge of the upper chamber bounded by the thin film to keep the thin film flat; And a lower vacuum line connected to the lower chamber for guiding forced air discharge of the lower chamber bounded by the thin film.

The upper and lower vacuum parts include valve members provided in the upper vacuum line and the lower vacuum line, respectively, to control internal air discharge.

The upper vacuum line is preferably provided with a check valve to prevent the inlet of the outside air into the upper chamber.

The outside air inflow unit may include a branch line branched from the upper vacuum line, and an inlet actuator operated for inflow of outside air into the upper chamber when the lower chamber and the upper chamber inside provided at the branch line and the inside of the upper chamber reach a set vacuum. It includes.

The lower chamber is preferably provided with a lower heater member, the upper chamber is preferably provided with an upper heater member.

A lower porous block is provided between the lower heater member and the thin film, and an upper porous block is provided between the upper heater member and the thin film.

The double-sided vacuum film coating method according to the present invention includes: an LED module mounting step of placing an LED module inside the lower chamber in a state where the upper chamber is lifted, so that the thin film struck at the edge of the lower chamber on which the LED module is mounted is supported. The thin film transfer step of placing the thin film on the lower chamber, the mold closing step of closing the upper chamber and the lower chamber to seal the inside, the air inside the upper chamber bounded by the thin film and the inside of the lower chamber Up and down vacuum step of forming an internal vacuum while keeping the thin film flattened by discharging air to the outside, and the thin film through the pressure difference to guide the outside air supply into the upper chamber in a vacuum state the LED module It includes an external air inflow step to be coated on.

The upper and lower vacuum step, the upper vacuum step for maintaining the thin film flat by inducing forced discharge of the air inside the upper chamber through the upper vacuum line connected to the upper chamber, and when the set vacuum reaches the upper chamber And a lower vacuum step in which the air inside the lower chamber is forcibly discharged through the lower vacuum line connected to the lower chamber to maintain the inside of the lower chamber in a vacuum state.

A thin film heating step is further included between the thin film transfer step and the mold closing step to induce shrinkage of the thin film by heating the inside of the lower chamber.

As described above, the double-sided vacuum film coating machine and the film coating method using the same according to the present invention, unlike the prior art by forcibly discharging the internal air of the upper chamber and the lower chamber separated by a thin film in order to maintain the entire internal vacuum In addition, it is possible to improve the adhesion between the thin film and the LED module by inflowing outside air into the upper chamber and waterproofing the thin film to the LED module through the pressure difference.

1 is a schematic diagram of a double-sided vacuum film coating machine according to an embodiment of the present invention.
Figure 2 is a flow chart showing a double-sided vacuum film coating method according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of a double-sided vacuum film coating machine and a film coating method using the same according to the present invention. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

1 is a schematic diagram of a double-sided vacuum film coating machine according to an embodiment of the present invention, Figure 2 is a flow chart showing a double-sided vacuum film coating method according to an embodiment of the present invention.

Referring to Figure 1, the double-sided vacuum film coating machine according to an embodiment of the present invention includes a lower chamber 10, the upper chamber 20, the upper and lower vacuum portion 30 and the outside air inlet portion (40).

The lower chamber 10 is to form a lower side of the double-sided vacuum film coating machine, is opened to one side, and forms a space inside. For convenience, the lower chamber 10 is shown to be open upward.

In particular, the lower chamber 10 includes the LED module 2 in the inner space.

The LED module 2 mounts the LED 6 on a board 4 and is manufactured by various methods.

In addition, the lower chamber 10 is provided with a thin film 8 on the upper side. The thin film 8 is supported on the upper edge of the lower chamber 10, and because it is a thin vinyl material, the thin film 8 sags to the inside of the lower chamber 10.

At this time, the thin film 8 is to be coated on the upper side of the LED module 2 to play a waterproof role, it can be applied to a variety of materials. Of course, the lower chamber 10 may be modified in various materials and various shapes.

In addition, the upper chamber 20 is opened in one open direction of the lower chamber 10, and descends and serves to open and close the inside. That is, the upper chamber 20 is moved straight in the direction of the lower chamber 10, and is transferred straight in the direction opposite to the lower chamber 10. At this time, the upper chamber 20 is reciprocally conveyed by various facilities, it is shown as reciprocally conveyed by the cylinder 22 for convenience. Of course, the lower chamber 10 is preferably fixed.

In particular, when the upper chamber 20 is completely straight in the direction of the lower chamber 10, the lower edge of the upper chamber 20 and the upper edge of the lower chamber 10 are in contact with each other, thereby, the upper chamber 20 And the space between the lower chamber 10 is sealed.

At this time, the closed space is partitioned into the upper side and the lower side by the thin film (8).

On the other hand, the upper and lower vacuum portion 30 serves to realize the vacuum of the upper side and the lower side divided by the thin film (8) in order.

That is, the upper and lower vacuum parts 30 discharge the air inside the upper chamber 20 and the air inside the lower chamber 10 bounded by the thin film 8 to the outside to keep the thin film 8 flat. It acts as an internal vacuum in one state.

In more detail, the upper and lower vacuum portions 30 include an upper vacuum line 32 and a lower vacuum line 34.

The upper vacuum line 32 serves to guide the forced internal air discharge of the upper chamber 20 bounded by the thin film 8. In particular, the upper vacuum line 32 is provided with a vacuum pump 36, it is connected to the inside of the upper chamber (20). Therefore, when the vacuum pump 36 is operated, the air inside the upper chamber 20 bounded by the thin film 8 is forcibly discharged to the outside along the upper vacuum line 32.

As the pressure inside the upper chamber 20 becomes lower than the pressure inside the lower chamber 10, the sagging thin film 8 is kept flat or is convex upward. At this time, the degree of vacuum inside the upper chamber 20 is adjusted according to the set state of the thin film (8).

Of course, the upper vacuum line 32 is applicable to various shapes and various materials, and is firmly connected to the circumferential surface of the upper chamber 20 by various methods, and connects the vacuum pump 36 in various ways.

In addition, the lower vacuum line 34 is branched from the upper vacuum line 32 and connected to the lower chamber 10 to guide the forced discharge of internal air of the lower chamber 10 bounded by the thin film 8. Do it.

In particular, the lower vacuum line 34 branches in various ways in the upper vacuum line 32. At this time, the lower vacuum line 34 may be independently connected to the lower chamber 10, but as the vacuum pump 36 must be provided with the upper vacuum line 32, respectively, the upper vacuum line (Simplified) Branching in 32).

That is, the lower vacuum line 34 has a vacuum pump 36 connected to the upper vacuum line 32 and is connected to the inside of the lower chamber 10. Therefore, when the vacuum pump 36 is operated, the air inside the lower chamber 10 bounded by the thin film 8 is forcibly discharged to the outside along the lower vacuum line 34.

At this time, the thin film 8 in the first deflection state is set flat or the degree of vacuum inside the lower chamber 10 is set to maintain a predetermined convex upward. This is to prevent the drooping portion of the thin film 8 from being arbitrarily attached to the LED module 2 provided in the lower chamber 10. In the following description, the flat state of the thin film 8 means a flat state or a predetermined convex upward.

In addition, the degree of vacuum in the lower chamber 10 is adjusted according to the set state of the thin film (8).

Of course, the lower vacuum line 34 is applicable to various shapes and various materials, and is firmly connected to the circumferential surface of the lower chamber 10 by various methods.

In particular, since the thin film 8 is initially mounted in a drooped state, the internal air discharge of the upper chamber 20 is performed before the internal air discharge of the lower chamber 10 so that the thin film 8 becomes flat. This is preferred.

Accordingly, the upper and lower vacuum portions 30 include valve members 35 provided in the upper vacuum line 32 and the lower vacuum line 34 to control internal air discharge.

That is, when the vacuum pump 36 is operated, the valve member 35 provided in the upper vacuum line 32 is first opened by external control, and the valve member 35 provided in the lower vacuum line 34 is opened. Will remain closed. This is to flatten the sagging thin film 8.

After that, when the deflection thin film 8 is flat, and the vacuum degree inside the upper chamber 20 reaches a set value, the valve member 35 provided in the upper vacuum line 32 is controlled by external control. The valve member 35 provided in the lower vacuum line 34 is opened.

Then, while the thin film 8 is kept flat, the set vacuum in the upper chamber 20 and the set vacuum in the lower chamber 10 are realized.

At this time, when the set vacuum of the upper chamber 20 and the set vacuum of the lower chamber 10 are realized, the vacuum pump 36 is stopped or continuously operated to maintain the vacuum. Although not shown, the degree of vacuum in the upper chamber 20 and the degree of vacuum in the lower chamber 10 are detected in real time by a probe such as a sensor, and the operation of the vacuum pump 36 is determined through this signal. Similarly, through this signal, it is determined whether the valve member 35 of the upper vacuum line 32 and the valve member 35 of the lower vacuum line 34 are opened or closed.

On the other hand, the valve member 35 provided in the upper vacuum line 32 is closed and the valve member 35 provided in the lower vacuum line 34 is open, or the valve member provided in the upper vacuum line 32 ( When the valve member 35 provided in the 35 and the lower vacuum line 34 is closed at the same time, if the valve member 35 of the upper vacuum line 32 is malfunctioning, the outside air is moved into the upper chamber 20. As it flows in, the thin film 8 sags arbitrarily.

Thus, as a safety device, the upper vacuum line 32 is preferably provided with a check valve 37 to prevent the inflow of the upper chamber 20 of the outside air.

The check valve 37 guides the air inside the upper chamber 20 to be discharged to the outside, and serves to block the inflow of the upper chamber 20 of the outside air.

In addition, in a state where the lower chamber 10 and the upper chamber 20 are in contact with each other and closed, it is preferable that the thin film 8 is heated to maintain a flat state in a short time.

Thus, the lower chamber 10 is preferably provided with a lower heater member 52, the upper chamber 20 is preferably provided with an upper heater member 54. Of course, only one of the lower heater member 52 and the upper heater member 54 may be provided.

In particular, the thin film 8 is preferably made of a material that shrinks flat when heated in a deflection state at room temperature. In addition, the lower heater member 52 and the upper heater member 54 is connected to the heating power source 56 is supplied with power, the heating power source 56 is preferably connected to the lower chamber 10 is fixed.

At this time, although not shown, the upper chamber 20 and the lower chamber 10 is preferably provided with a heat dissipating material to prevent the heat caused by the corresponding heater member (54, 52).

In addition, the lower heater member 52 and the upper heater member 54 may be variously applied and fixedly mounted in the lower chamber 10 and the upper chamber 20 corresponding to each other by various methods, although not illustrated, Connected to each other in a way.

In addition, a lower porous block 62 is provided between the lower heater member 52 and the thin film 8, and an upper porous block is disposed between the upper heater member 54 and the thin film 8. block 64) is preferably provided.

The lower porous block 62 is forcibly fitted inside the lower chamber 10 as a porous block. Thus, the lower porous block 62 serves to fix the lower heater member 52. The lower porous block 62 supports the LED module 2. At this time, the lower porous block 62 serves to minimize the distance between the LED module 2 and the thin film (8) within the possible range. Here, the 'possible range' refers to a distance such that the sagging thin film 8 does not contact the LED module 2.

In addition, the upper porous block 64 is forcibly fitted inside the upper chamber 20 as a porous block. Thus, the upper porous block 64 serves to fix the upper heater member 54.

In particular, since the upper porous block 64 and the lower porous block 62 are porous, the air inside the vacuum pump 36 may be discharged as much as possible.

On the other hand, the outside air inlet portion 40 is a closed space of the upper chamber 20 and the lower chamber 10 guides the outside air supply into the upper chamber 20 in a vacuum state, the thin film 8 is led through the pressure difference It serves to be coated on the module (2).

That is, when the outside air flows into the upper chamber 20 by the outside air inlet 40, the thin film 8 is firmly attached to the LED module 2 while being pressed due to the pressure difference and coated.

In particular, the outdoor air inlet 40 includes a branch line 42 and the inlet actuator 44.

The branch line 42 is a pipe branching from the upper vacuum line 32, and the inlet actuator 44 is provided in the branch line 42 so that the closed lower chamber 10 and the inside of the upper chamber 20 reach the set vacuum. When the upper chamber 20 is operated to enter the outside air.

That is, when the inlet actuator 44 is operated, external air is introduced into the upper chamber 20 through the branch line 42 and the upper vacuum line 32.

Then, the thin film 8 is attached to the LED module 2 by the pressing pressure of the outside air. At this time, since the inside of the lower chamber 10 corresponding to the lower side of the thin film 8 is in a vacuum state, the thin film 8 covers the entire upper side of the LED module 2 having a three-dimensional shape by the LED 6 or the like. It is firmly attached and coated.

In particular, although not shown, the inlet actuator 44 is controlled by a probe such as a sensor for detecting whether the set vacuum in the lower chamber 10 and the upper chamber 20 is reached.

Therefore, after the upper chamber 20 and the lower chamber 10 are vacuumed in sequence, the outside air flows into the upper chamber 20, so that the thin film 8 is automatically coated on the upper side of the LED module 2. .

On the other hand, referring to Figure 2, the double-sided vacuum film coating method according to an embodiment of the present invention, the LED module mounting step (S10), thin film transfer step (S20), thin film heating step (S30), mold closing step (S40) ), Up and down vacuum step (S50) and the outside air inlet step (S60).

First, the LED module mounting step (S10) is a process of placing the LED module 2 inside the lower chamber 10 in the state in which the upper chamber 20 is lifted.

In more detail, the LED module 2 is placed in the lower porous block 62 which is forcibly fitted to the lower chamber 10.

Then, in the thin film transfer step (S20), the process of placing the thin film 8 on the lower chamber 10 so that the thin film 8 struck at the edge of the lower chamber 10 on which the LED module 2 is mounted is supported. to be.

That is, the thin thin film 8 is automatically transferred by a conveying facility such as a conveyor, or manually placed on the lower chamber 10. At this time, the thin film 8 is squeezed downward while being supported by the lower chamber 10 edge.

In addition, the thin film heating step (S30) is a process of shrinking the sagging thin film 8 by heating the inside of the lower chamber (10).

That is, the thin film 8 is made of a material having a property of shrinking and flattening as it is heated.

In addition, the mold closing step S40 is a process of closing the upper chamber 20 and the lower chamber 10 to seal the inside thereof.

At this time, the upper chamber 20 is preferably linear reciprocating movement by the cylinder (22).

Of course, the mold closing step (S40) may be performed before the thin film heating step (S30).

In addition, the upper and lower vacuum step (S50) discharges the air in the upper chamber 20 and the air in the lower chamber 10 bounded by the thin film 8 to the outside to keep the thin film 8 flattened. It is a process of forming an internal vacuum in a state.

At this time, if the thin film 8 is sufficiently flat in the thin film heating step S30, the thin film 8 is maintained in the up and down vacuum step S50.

In particular, the upper and lower vacuum step (S50) includes an upper vacuum step (S52) and a lower vacuum step (S54).

The upper vacuum step (S52) is a process of maintaining the thin film 8 flat by inducing the forced discharge of air in the upper chamber 20 through the upper vacuum line 32 connected to the upper chamber 20. At this time, the inside of the upper chamber 20 partitioned by the thin film 8 is in a vacuum state.

Then, the lower vacuum step (S54) is forced to discharge the air in the lower chamber 10 through the lower vacuum line 34 connected to the lower chamber 10 when the set vacuum in the upper chamber 20 reaches the lower chamber (10) A step of maintaining the interior in a vacuum state.

As a result, the inner spaces of the upper chamber 20 and the lower chamber 10 which are closed to each other become a vacuum state.

In addition, the outdoor air inflow step (S60) guides the external air supply into the upper chamber 20 in a vacuum state inside the upper chamber 20 and the lower chamber 10, so that the thin film 8 is led through the pressure difference. 2) is to be coated.

Although not shown, after the lower chamber 10 is supplied with the outside air, the upper chamber 20 is separated from the lower chamber 10, and finally the LED module 2 which has a waterproof coating of the thin film 8 ) Is collected.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand. Therefore, the true technical protection scope of the present invention will be defined by the claims below.

2: LED module 8: thin film
10: lower chamber 20: upper chamber
30: upper and lower vacuum part 32: upper vacuum line
34: lower vacuum line 36: vacuum pump
40: fresh air inlet 42: branch line
44: inlet actuator 52: lower heater member
54: upper heater member 56: heating power supply
62: lower porous block 64: upper porous block

Claims (10)

A lower chamber which is opened to one side and has an LED module mounted therein with an LED mounted on a board, and supports a thin thin film that is placed on the upper side and is sagging;
An upper chamber which is opened in one open direction of the lower chamber, is lowered and opened and closed;
An upper and lower vacuum parts configured to discharge the air inside the upper chamber and the air inside the lower chamber bounded by the thin film to the outside to form an internal vacuum while keeping the thin film flat; And
Double-sided vacuum film coater, characterized in that it comprises an air inlet for guiding the outside air supply to the inside of the upper chamber in a vacuum state so that the thin film is coated on the LED module through the pressure difference.
The method of claim 1, wherein the upper and lower vacuum portion,
An upper vacuum line connected to the upper chamber to guide the forced air discharge of the upper chamber bounded by the thin film to keep the thin film flat; And
And a lower vacuum line branched from the upper vacuum line and connected to the lower chamber to guide the forced discharge of the internal air of the lower chamber bounded by the thin film.
The method of claim 2, wherein the upper and lower vacuum portion,
Double-sided vacuum film coating machine characterized in that it comprises a valve member provided in each of the upper vacuum line and the lower vacuum line to regulate the internal air discharge.
The method of claim 2,
The upper vacuum line is a double-sided vacuum film coater, characterized in that provided with a check valve to prevent the inflow of the upper chamber of the outside air.
The outside air inlet unit according to any one of claims 2 to 4, wherein
A branching line branched from the upper vacuum line; And
And the inlet actuator provided to close the lower chamber and the upper chamber inside the branch line to operate to introduce outside air into the upper chamber when the inside of the upper chamber reaches a set vacuum.
The method according to any one of claims 1 to 4,
The lower chamber has a lower heater member;
The upper chamber is a double-sided vacuum film coating machine, characterized in that it comprises an upper heater member.
The method according to claim 6,
A lower porous block is provided between the lower heater member and the thin film;
A double-sided vacuum film coater, characterized in that the upper porous block (upper porous block) is provided between the upper heater member and the thin film.
An LED module mounting step of placing the LED module inside the lower chamber while the upper chamber is lifted;
A thin film transfer step of placing the thin film on the lower chamber so that the thin film struck at the edge of the lower chamber on which the LED module is mounted is supported;
A mold closing step of closing the upper chamber and the lower chamber to seal the interior;
An up and down vacuum step of forming an internal vacuum while keeping the thin film flattened by discharging the air inside the upper chamber and the air inside the lower chamber bounded by the thin film to the outside; And
And an external air inflow step of guiding the external air supply into the upper chamber in a vacuum state so that the thin film is coated on the LED module through a pressure difference.
The method of claim 8, wherein the vertical vacuum step,
An upper vacuum step of maintaining the thin film flat by inducing forced discharge of air in the upper chamber through an upper vacuum line connected to the upper chamber; And
And a lower vacuum step of maintaining the inside of the lower chamber in a vacuum state by forcibly discharging air in the lower chamber through a lower vacuum line connected to the lower chamber when the set vacuum is reached in the upper chamber. Double sided vacuum film coating method.
The method of claim 8,
Between the thin film transfer step and the mold closing step is a double-film vacuum film coating method further comprises a thin film heating step of inducing shrinkage of the thin film by heating the lower chamber inside.

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