WO2019045389A1

WO2019045389A1 - Thermal transfer apparatus and method for bent cover glass using multi-nozzle part for discharging and extracting resin

Info

Publication number: WO2019045389A1
Application number: PCT/KR2018/009864
Authority: WO
Inventors: 모경섭; 이대근
Original assignee: 주식회사 지디테크놀러지
Priority date: 2017-08-30
Filing date: 2018-08-27
Publication date: 2019-03-07
Also published as: KR20190024006A; KR101961811B1

Abstract

One embodiment of the present invention relates to a thermal transfer apparatus for bent cover glass using pressing of a resin, which thermally transfers a printed film having a printed layer attached thereto onto bent cover glass and includes a jig part on which the cover glass having four bent edge surfaces formed at an upper part thereof is placed, wherein the jig part includes: a lower molding member having a curved surface having a curvature; and an upper molding member which is opposite to and disposed above the lower molding member with reference to the cover glass and includes a single nozzle part for discharging a resin, and a pressing part for pressing and thermally transferring the printed film toward an upper surface of the cover glass as the resin is discharged.

Description

Thermal transfer device and method of bending cover glass using multiple nozzle parts for resin ejection and extraction

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermal transfer apparatus and a method of using the same, and more particularly, to a thermal transfer apparatus for a bending cover glass for efficiently thermally transferring a print layer to a bent glass.

The thermal transfer method is to print characters or designs on the outer surface of a subject, such as a mobile phone case, and prints a design such as a picture, character, or graphic on a transfer sheet and design printed on a transfer sheet using a physical or chemical method It is a way of transferring to other objects.

In such a thermal transfer system, there have been developed apparatuses capable of forming a transfer layer on a transfer object having a form and a curved surface that are difficult to apply general printing methods such as an iron plate, glass, clothes, and leather to perform thermal transfer printing .

Particularly, in the case of mobile phones, the front glass for protecting the display and the rear glass for protecting the battery are developed as a two-side closed type, and furthermore, there is a tendency to apply a 3D glass which is closed on four sides.

However, there is a great limitation in forming a transfer layer on a glass in which four sides are closed using a conventional printing method or a thermal transfer method and performing thermal transfer printing. This is because it is difficult to apply a constant pressure and heat to the curved surface as the curved portion of the glass increases, and it is also difficult to adhere the transfer layer depending on the depth of curvature. In other words, since the glass can not be pressed by the appropriate pressing force because the glass is damaged by the curved edge surface, defects such as bubbles are generated on the thermal transfer work surface of the glass, resulting in defective appearance.

Accordingly, it is necessary to develop a technique that can minimize the defective phenomenon that the transferred transfer layer is chewed or distorted in the curved glass.

As a related art technique, Korean Patent Application Publication No. 10-2014-0045006 (entitled: Curved Surface Forming Apparatus for Tempered Glass for Touch Screen Panel and Its Molding Method) is available.

In an embodiment of the present invention, a printing film is pressed and thermally transferred to a cover glass using a mold member having a structure in which a resin can be discharged with a bending cover glass in four directions interposed therebetween. By pressurizing the cover glass with a resin to be discharged, Provided are a thermal transfer apparatus and method of a bending cover glass using pressurization of a resin for minimizing a defect rate of a cover glass.

In addition, one embodiment of the present invention is to extract a resin which has been used for pressing and transferring a printing film to a cover glass by using a mold member having a resin-extractable structure, and then reused in a subsequent pressurization and thermal transfer, Provided are a thermal transfer apparatus and method of a bending cover glass using multiple nozzle units for discharging and extracting resin to minimize costs.

The problems to be solved by the present invention are not limited to the above-mentioned problem (s), and another problem (s) not mentioned can be clearly understood by those skilled in the art from the following description.

A thermal transfer apparatus for a bending cover glass using multiple nozzles for ejecting and extracting resin according to an embodiment of the present invention is a thermal transfer apparatus for thermally transferring a print film having a print layer on a bared cover glass, A lower mold member having a jig portion on which the cover glass with four edge surfaces bent, the jig portion being formed of a curved surface having a curvature, and a lower mold member opposed to the lower mold member with respect to the cover glass And an upper mold member having multiple nozzles for ejecting and extracting the resin, and a pressing unit for pressing the print film toward the upper surface of the cover glass as the resin is ejected to thermally transfer the resin.

In addition, the jig according to an embodiment of the present invention is formed in a concave shape as the edge surface is bent with the same curvature as the edge surface of the cover glass, and the pressing portion is formed in a convex shape, It can have a curvature.

According to an embodiment of the present invention, the lower mold member may further include at least one glass absorption unit vertically penetrating the lower side of the jig. The glass absorption unit may absorb air between the cover glass and the jig, So that the cover glass can be brought into close contact with the jig.

According to an embodiment of the present invention, the lower mold member further includes at least one film adsorption unit formed on one side of the jig, wherein the film adsorption unit sucks air between the print film and the jig The print film can be closely attached to the cover glass.

Further, according to an embodiment of the present invention, a bending cover glass thermal transfer apparatus using a multiple nozzle unit for ejecting and extracting resin is coupled to an upper portion of the print film, so as to minimize movement of the print film And may further include a clamp for fixing the film.

The multi-nozzle unit according to an embodiment of the present invention may include a first nozzle which is formed to pass through an upper center of the pressing unit, and a second nozzle which is formed on the upper side of the pressing unit, Of the second nozzle.

Further, the upper mold member according to an embodiment of the present invention may be formed by using a resin discharged through the first nozzle and flowing into a spacing space formed between the pressing portion and the printing film at the time of pressing, It can be pressed and thermally transferred.

In addition, the upper mold member according to an embodiment of the present invention can extract the resin introduced into the spacing space through the second nozzle.

According to an embodiment of the present invention, the upper mold member further includes a heating unit formed along a longitudinal direction at one side of the first nozzle, and the heating unit maintains the temperature of the resin discharged through the first nozzle, , The first nozzle may be preheated before the resin is ejected.

Further, the lower mold member according to an embodiment of the present invention may further include a gas vent formed on the other side of the jig for discharging gas generated when the printing film is pressed on the cover glass .

A thermal transfer method of a bending cover glass using multiple nozzles for ejecting and extracting resin according to an embodiment of the present invention is a thermal transfer method in which a print film having a print layer is thermally transferred onto a bared cover glass A lower mold member having a cover glass with four edge faces bent, a jig having a curved surface at an upper portion thereof, and an upper mold member having a multiple nozzle portion for ejecting and extracting resin and a pressing portion for thermal transfer are prepared Placing the cover glass on an upper surface of the jig and placing the print film on an upper surface of the cover glass; and pressing the upper mold member and the lower mold member against the cover glass on which the print film is seated, A plurality of nozzles for discharging the resin through the multiple nozzles, Pressing and pressing the print film by using the discharged resin introduced into the spacing space, separating the upper mold member and the print film from the cover glass, separating the cover glass from the lower mold member .

According to an embodiment of the present invention, the step of seating includes sucking air between the cover glass and the jig through at least one glass absorption unit formed vertically downwardly of the jig, And sucking air between the print film and the jig through at least one film adsorption unit formed through the side surface.

In addition, the placing step according to an embodiment of the present invention may further include fixing the print film by coupling a clamp to an upper portion of the print film so that movement of the print film is minimized at the time of pressing.

The multi-nozzle unit according to an embodiment of the present invention may include a first nozzle which is formed to pass through an upper center of the pressing unit, and a second nozzle which is formed on the upper side of the pressing unit, Wherein the step of thermally-transferring comprises pressing the print film using a resin discharged through the first nozzle and flowing into a spacing space formed between the pressurizing portion and the print film at the time of pressing, And then thermally transferring the film.

Further, the method of thermally transferring a bending cover glass using multiple nozzles for ejecting and extracting resin according to an embodiment of the present invention further includes extracting the resin introduced into the spacing space through the second nozzle can do.

According to another aspect of the present invention, there is provided a method of thermally transferring a bending cover glass using multiple nozzles for ejecting and extracting resin, comprising the steps of: Maintaining the temperature of the resin discharged through the first nozzle, or preheating the first nozzle before the resin is discharged.

The details of other embodiments are included in the detailed description and the accompanying drawings.

According to an embodiment of the present invention, a printing film is pressed and thermally transferred to a cover glass using a mold member having a structure in which resin can be discharged with a bending cover glass in four directions interposed therebetween, The defect rate of the bending cover glass can be minimized.

In addition, according to an embodiment of the present invention, a resin material which has been pressed and thermally transferred to a cover glass by using a mold member having a resin-extractable structure is extracted and recycled in a subsequent pressurization and thermal transfer, The cost of consuming can be minimized.

In addition, according to an embodiment of the present invention, it is possible to maximize the thermal efficiency of the print layer by preheating the nozzles through which the resin is discharged or by keeping the temperature of the discharged resin constant.

1 is a view for explaining a thermal transfer apparatus for a bending cover glass using a multiple nozzle unit for ejecting and extracting a resin according to an embodiment of the present invention.

FIG. 2 is a view illustrating a modification of the bending cover glass thermal transfer apparatus using multiple nozzles for ejecting and extracting resin according to an embodiment of the present invention. Referring to FIG.

3 is a flowchart illustrating a method of transferring a bending cover glass using multiple nozzle units for ejecting and extracting resin according to an embodiment of the present invention.

4A to 4L are views illustrating a specific process of the thermal transfer method of FIG.

Explanation of key symbols in the drawings

100: Thermal transfer system of bending cover glass

10: cover glass

20: Printing film

22: Printed layer

110: Lower mold member

112:

114: glass absorption part

116: Film suction part

118: Gas vent

120: upper mold member

122: Multiple nozzle section

122a: first nozzle

122b: second nozzle

124:

126:

130: Clamp

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and / or features of the present invention, and how to accomplish them, will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but is capable of many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

A warrior means literally transferring a photograph or image to another object. Of these warrior types, a thermal transfer is a method of printing a photograph or an image on a film, pressing the film back onto the glass surface, and applying heat and pressure. On the other hand, in the past, it was a way to directly print a photograph or an image on a glass or to attach a deco film to a glass. The panel screen that is made so is not visible and the defect rate in the manufacturing process is also considerable.

Accordingly, in an embodiment of the present invention, the thickness of the panel is minimized by using the thermal transfer printing method, and bubbles that are often generated when joining the glass and the film can be removed. That is, by zeroing the printing defective ratio, it is possible not only to reduce the cost of recycling the glass due to defects, but also to reduce the cost of the entire cover glass.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1, a thermal transfer apparatus 100 of a bending cover glass 10 using multiple nozzles for ejecting and extracting a resin according to an embodiment of the present invention includes a print film 22 20 on the bent cover glass 10 and includes a lower mold member 110 and an upper mold member 120. [

The thermal transfer apparatus 100 of the present invention forms a lower mold member 110 and an upper mold member 120 by bending a cover glass 10 having a print film 20 thereon, To press and heat the upper surface of the cover glass 10 by pressing the upper surface of the cover glass 10 using the resin L discharged through the nozzle portion provided in the upper mold member 120 Feature. Hereinafter, the thermal transfer apparatus 100 for performing the thermal transfer operation will be described in detail below.

The lower mold member 110 has a jig 112 on which the cover glass 10 bent at the top is placed.

For reference, the cover glass 10 is a tempered glass formed on a touch screen panel (TSP), and can be realized to have a transparent and flexible state. In the present embodiment, the cover glass 10 can be bent at an edge, and in particular, it is desired to apply the cover glass 10 in which four edge faces are bent.

The jig 112 is preferably formed as a curved surface having a curvature such that the four edge surfaces correspond to the bent glass cover 10. At this time, as the edge surface of the jig 112 is bent with the same curvature as the edge surface of the cover glass 10, the jig 112 can be formed in a concave shape. For reference, it is preferable that the curvature has a constant ratio, but it is not limited thereto and may have a constant ratio.

When the cover glass 10 is placed on the jig portion 112 of the lower mold member 110 and the print film 20 pressed and thermally transferred by the upper mold member 120, As shown in FIG.

The upper mold member 120 is disposed opposite to the lower mold member 110 with respect to the cover glass 10. The upper mold member 120 and the lower mold member 110 are assembled with the bending cover glass 10 having the print film 20 therebetween so that the print film 20 is stuck to the cover glass 10, It is possible to pressurize and heat the upper surface of the substrate.

The upper mold member 120 has a pressing portion 124 for pressing the print film 20 toward the upper surface of the cover glass 10 for thermal transfer.

The pressing portion 124 may be formed to correspond to the shape of the jig 112 provided on the lower mold member 110. Specifically, the pressing portion 124 may be formed in a convex shape and have the same curvature as the jig portion 112. Accordingly, the print film 20 can be pressed and thermally transferred onto the upper surface of the cover glass 10 more finely.

The upper mold member 120 further includes a multiple nozzle unit 122 formed on the upper side of the pressing unit 124 to enable the resin L to be ejected and extracted.

The multiple nozzle part 122 is composed of a first nozzle 122a and a second nozzle 122b as a path through which the resin L injected from a resin injecting device or similar means capable of injecting the resin L moves . The first nozzle 122a is formed at the upper center of the pressing portion 124 and the second nozzle 122b is formed at the upper side of the pressing portion 124. The second nozzle 122b is formed to pass through at least one The pair can be symmetrical.

For reference, in the present embodiment, it is preferable to use a liquid resin having a high viscosity, which has fluidity to maximize the performance at the time of pressurization and which can be easily deformed.

The upper mold member 120 is formed in a spaced space formed between the pressing portion 124 and the printing film 20 by being discharged through the first nozzle 122a when the printing film 20 is pressed on the upper surface of the cover glass 10, The print film 20 can be pressed and thermally transferred using the resin L that flows into the print medium S.

Since the first nozzle 122a is formed through the center of the upper mold member 120, the resin L discharged from the first nozzle 122a moves from the central portion to the outer portion of the separated space S And the pressing of the printing film 20 can also proceed sequentially from the center portion of the cover glass 10 toward the outside.

The resin L has a certain temperature and flows into the space S and is moved in the space so that the print layer 22 adhered to the print film 20 can be easily placed on the cover glass 10 Thermal transfer can be done.

Thus, according to an embodiment of the present invention, the print layer 22 of the print film 20, which is pressed and thermally transferred, can be uniformly transferred onto the upper surface of the cover glass 10. [ In addition, since the pressurization is performed by the liquid resin (L) having a high viscosity, defective elements due to foreign substances in the process can be eliminated and the overall yield can be improved.

The upper mold member 120 can extract the resin L introduced into the spacing space S through the second nozzle 122b.

At this time, since at least one pair of the second nozzles 122b are arranged symmetrically on both sides with respect to the first nozzle 122a, the pressed and thermally-completed resin L can be extracted at a high speed.

Thus, according to the embodiment of the present invention, the resin (L), which has been pressed and thermally transferred to the cover glass, is extracted using a mold member having a structure in which the resin (L) can be extracted, By recycling, the cost of the thermal transfer operation can be minimized.

Meanwhile, one embodiment of the present invention may further include a clamp 130 for fixing the print film 20 in a pressurizing and thermal transfer operation.

The clamp 130 can be detachably coupled to the upper edge of the print film 20 provided on the upper portion of the cover glass 10 to minimize movement of the print film 20 when the pressurization and thermal transfer operations are performed. So that the print film 20 can be fixed. Thus, the print film 20 can be accurately transferred to the target position on the cover glass 10. [

The upper mold member 120 is detached from the lower mold member 110 and is mounted between the mold members to form a cover glass 20 having a print film 20 on the upper surface thereof 10).

2, the thermal transfer apparatus of this embodiment is a further embodiment of a device 100 for thermally transferring a print film 20 with a print layer 22 on a bared cover glass 10 The lower mold member 110 and the upper mold member 120 and the glass adsorption unit 114, the film adsorption unit 116, the heating unit 126, and the gas vent 118.

The lower mold member 110 and the upper mold member 120 perform the same or similar functions as the lower mold member 110 and the upper mold member 120 of FIG. 1, In the example, the glass adsorption section 114, the film adsorption section 116, the gas vent 118, and the heating section 126 are described.

The lower mold member 110 may further include at least one glass adsorption unit 114 formed vertically through the lower side of the jig 112. The lower mold member 110 sucks the air between the cover glass 10 and the jig 112 through the glass absorption unit 114 so that the cover glass 10 is brought into close contact with the jig 112 .

At this time, since the cover glass 10 is formed to have a transparent and flexible state, it can be adsorbed by at least one glass adsorption unit 114 and adsorbed and fixed to the jig 112. That is, the lower mold member 110 is moved in the air gap between the cover glass 10 and the jig 112 through the at least one glass adsorption unit 114 in a state where the cover glass 10 is placed on the jig 112 So that the cover glass 10 can be brought into close contact with the jig 112.

The lower mold member 110 may further include at least one film adsorption unit 116 formed on one side of the jig 112. The lower mold member 110 sucks the air between the print film 20 and the jig 112 through the film suction unit 116 so that the print film 20 is brought into close contact with the cover glass 10 .

Since the length of the jig 112 is somewhat longer than the length of the cover glass 10 in the portion where the difference in length of the jig 112 and the cover glass 10 occurs, Can be brought into close contact with the upper surface of the jig 112, not the glass 10.

The lower mold member 110 is moved in the direction of the length of the jig portion 112 and the cover glass 10 through the at least one film suction portion 116 in a state where the print film 20 is placed on the cover glass 10. [ The vacuum state can be established by sucking and removing the air between the print film 20 and the jig 112 at the portion where the difference occurs so that the print film 20 can be brought into close contact with the cover glass 10 .

For reference, the print film 20 is a print film 22 to which a print layer 22 is attached. The print film 20 may include a base film of a transparent material and a print layer 22 on which a pattern is printed on a lower surface of the base film. The printing layer 22 is formed by lowering the glass transition temperature (Tg) in order to prevent cracks occurring when the printing layer 22 is bent to 90 degrees or more.

The printing film 20 used in this embodiment is preferably a PET film that has been subjected to release treatment as a transfer film of a high-brightness molding pattern. In addition, the printed film 20 can prevent the printed pattern from being distorted by using a complex curing type transparent material using heat and ultraviolet rays.

The lower mold member 110 may further include a gas vent 118 formed through the other side of the jig 112. Accordingly, the lower mold member 110 can discharge gas generated when the print film 20 is pressed onto the cover glass 10 through the gas vent 118. As a result, it is possible to prevent bubbles or lifting that may occur on the surface of the cover glass 10. [

The upper mold member 120 may further include a heating portion 126 formed on one side of the first nozzle 122a along the longitudinal direction of the first nozzle 122a. Accordingly, the upper mold member 120 maintains the temperature of the resin L discharged from the first nozzle 122a through the heating portion 126, or maintains the temperature of the resin L discharged from the first nozzle 122a ) Can be preheated.

That is, the heating unit 126 can transmit heat of a certain temperature to the nozzle unit so that the resin L discharged through the nozzle unit can maintain a liquefied state. Accordingly, as the pressurization by the liquefied resin L is continuously performed, the efficiency of thermal transfer can be maximized.

FIG. 3 is a flow chart for explaining a thermal transfer method of a bending cover glass using multiple nozzle units for ejecting and extracting resin according to an embodiment of the present invention. FIGS. 4A to 4L are cross- In the following description. The thermal transfer method in this embodiment is based on a thermal transfer method of a bending cover glass for thermally transferring a print film having a print layer attached thereto to a bent cover glass.

Referring to FIGS. 2 and 3, in step 310, a driving apparatus for driving a thermal transfer apparatus of a bending cover glass 10 using multiple nozzle units for ejecting and extracting resin according to an embodiment of the present invention A lower mold member 110 having a cover glass 10 with four edge faces bent and a jig 112 having a curved upper surface and a plurality of nozzle units 122 for ejecting and extracting the resin L, And an upper mold member 120 having a pressing portion 124 for thermal transfer.

At this time, as the edge surface of the jig 112 is bent with the same curvature as the edge surface of the cover glass 10, the jig 112 can be formed in a concave shape.

2 to 3 and 4A to 4E, in step 320, the driving device places the cover glass 10 on the upper surface of the jig 112, And the print film (20) is placed on the upper surface.

4B, the thermal transfer apparatus includes at least one glass absorption unit 114 formed at the lower side of the jig 112 in the up and down direction, The air between the jig portions 112 can be sucked. 4C, the driving apparatus can set the printing film 20 with the printing layer 22 on the top of the cover glass 10, and if necessary, the printing film 20, And the cover glass 10 can be aligned. 4D, the driving device controls the movement of the print film 20 to the upper side of the print film 20 so that the movement of the print film 20 is minimized when the print film 20 is pressed and thermally transferred to the cover glass 10. [ So that the print film 20 can be fixed. 4E, the thermal transfer apparatus is driven by the drive unit to drive the print film 20 and the print film 20 through at least one film adsorption unit 116 formed on one side of the jig 112, The air between the jig portions 112 can be sucked.

Next, referring to FIGS. 2 to 3 and 4F, in step 330, the driving device controls the driving of the upper mold member 120 and the lower mold member 120 based on the cover glass 10 on which the printing film 20 is seated. The member 110 is formed.

Next, referring to FIGS. 2 to 3 and 4G to 4I, in step 340, the driving unit discharges the resin L through the multiple nozzle unit 122, And the printed film 20 is pressed and thermally transferred using the discharged resin L which flows into the spacing space S formed between the printed film 20 and the printed film 20.

At this time, as shown in FIG. 4G, the drive unit injects the resin L into the first nozzle 122a, and the injected resin L can be discharged into the spacing space S. Here, the thermal transfer apparatus includes a heating unit 126 formed along one side of the first nozzle 122a along the longitudinal direction of the first nozzle 122a, It is possible to maintain the temperature or to preheat the first nozzle 122a before the resin L is ejected.

4H, the driving device presses and thermally transfers the cover glass 10, on which the print film 20 is placed, on the upper surface using the resin L discharged in the space S, can do. Since the first nozzle 122a is formed to pass through the center of the upper mold member 120, the resin L discharged from the nozzle portion can move from the central portion to the outer portion in the spacing space S, The pressing of the cover glass 20 can also proceed sequentially from the center portion of the cover glass 10 toward the outside.

Thereafter, as shown in FIG. 4I, the driving device can extract the resin L introduced into the spacing space S through the second nozzle 122b.

At this time, since at least one pair of the second nozzles 122b are arranged symmetrically on both sides with respect to the first nozzle 122a, the pressed and thermally-completed resin L can be extracted at a high speed. In this embodiment, two pairs of the second nozzles 122b are opposed to each other with respect to the first nozzle 122a. However, the present invention is not limited thereto and may be realized by a pair of nozzles or three or more pairs of nozzles.

Next, referring to FIGS. 2 to 3 and 4J to 4L, in step 350, the driving device separates the upper mold member 120 and the print film 20 from the cover glass 10, The cover glass 10 is detached from the mold member 110. [

At this time, as shown in FIG. 4J, the driving device can simultaneously remove the upper mold member 120 and the thermally-transferred print film 20 from the cover glass 10. FIG. Accordingly, only the print layer 22 adhered to the print film 20 can be attached to the upper surface of the cover glass 10. For reference, the driving device may separate the upper mold member 120 and the print film 20 from the cover glass 10 in order.

Then, as shown in FIG. 4K, the driving apparatus separates the cover glass 10 having the print layer 22 attached thereto from the lower mold member 110 to obtain a finished bending cover glass 10 can do. The finished bending cover glass 10 is shown in Fig. 41 as a finished product.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Modification is possible. Accordingly, the spirit of the present invention should be understood only in accordance with the following claims, and all equivalents or equivalent variations thereof are included in the scope of the present invention.

Claims

A thermal transfer apparatus for thermally transferring a print film having a print layer on a bared cover glass,

A lower mold member having a jig on which the cover glass on which the four edge surfaces are bent is placed, the jig being formed into a curved surface having a curvature; And

A plurality of nozzles for ejecting and extracting the resin, and a plurality of nozzles for pressing and pressing the print film toward the upper surface of the cover glass as the resin is ejected, The upper mold member

And a plurality of nozzle units for ejecting and extracting the resin.
The method according to claim 1,

The jig

The concave shape is formed as the edge surface is bent with the same curvature as the edge surface of the cover glass,

The pressing portion

Wherein the bending cover glass has a convex shape and has the same curvature as the jig portion.
3. The method of claim 2,

The lower mold member

Further comprising: at least one glass absorption unit vertically penetrating the lower side of the jig,

The glass adsorption unit

And the cover glass sucks air between the cover glass and the jig so that the cover glass is brought into close contact with the jig. The thermal transfer apparatus of a bending cover glass using multiple nozzles for ejecting and extracting resin.
3. The method of claim 2,

The lower mold member

Further comprising at least one film adsorption unit formed on one side of the jig,

The film adsorption unit

Wherein the print film is in contact with the cover glass by sucking air between the print film and the jig to close the cover glass.
3. The method of claim 2,

And a clamp for fixing the print film to the print film so as to minimize movement of the print film when the pressure is applied,

Further comprising a plurality of nozzles for ejecting and extracting the resin.
3. The method of claim 2,

The multi-

A first nozzle penetratingly formed at an upper center of the pressing portion; And

At least a pair of second nozzles formed to pass through above the pressing portion and symmetrical with respect to the first nozzle,

And a plurality of nozzle units for ejecting and extracting the resin.
The method according to claim 6,

The upper mold member

Wherein the resin film is pressed and thermally transferred using a resin which is discharged through the first nozzle and flows into a spaced space formed between the pressing part and the printing film at the time of pressing, A thermal transfer device for a bending cover glass using multiple nozzle units.
8. The method of claim 7,

The upper mold member

And the resin introduced into the spacing space is extracted through the second nozzle. The thermal transfer apparatus of a bending cover glass using multiple nozzles for discharging and extracting resin.
The method according to claim 6,

The upper mold member

Further comprising a heating unit formed along a length direction on one side of the first nozzle,

The heating unit

Wherein the temperature of the resin discharged through the first nozzle is maintained or the first nozzle is preheated before the resin is discharged. The thermo-transfer of the bending cover glass using the multiple nozzle unit for discharging and extracting the resin Device.
3. The method of claim 2,

The lower mold member

Further comprising a gas vent for discharging the gas generated when the printing film is pressed on the cover glass. The thermal transfer apparatus for a bending cover glass using multiple nozzles for discharging and extracting resin.
A thermal transfer method for thermally transferring a print film with a print layer on a bared cover glass,

Preparing an upper mold member having a lower mold member having a cover glass on which four edge faces are bent, a jig having a curved surface on an upper portion thereof, a multiple nozzle portion for ejecting and extracting resin, and a pressing portion for thermally transferring;

Placing the cover glass on an upper surface of the jig and seating the print film on an upper surface of the cover glass;

Forming the upper mold member and the lower mold member based on a cover glass on which the print film is placed;

Pressing the printing film by using the discharged resin to discharge the resin through the multiple nozzle unit and flowing into the spacing space formed between the pressing part and the printing film during the molding; And

Separating the upper mold member and the print film from the cover glass and separating the cover glass from the lower mold member

And a plurality of nozzles for ejecting and extracting the resin.
12. The method of claim 11,

The seating step

Sucking air between the cover glass and the jig through at least one glass adsorption unit formed above and below the jig; And

A step of sucking air between the print film and the jig through at least one film adsorption unit formed on one side of the jig,

And a plurality of nozzles for ejecting and extracting the resin.
12. The method of claim 11,

The seating step

Fixing the print film by bonding a clamp to an upper portion of the print film so that movement of the print film is minimized when the pressure is applied

The method of claim 1, further comprising the steps of:
12. The method of claim 11,

The multi-

A first nozzle penetratingly formed at an upper center of the pressing portion; And

And at least a pair of second nozzles formed on the upper side of the pressing portion and symmetrical with respect to the first nozzle,

The thermal transfer step

And pressing the print film by heat using a resin which is discharged through the first nozzle and flows into the spacing space formed between the pressing portion and the print film at the time of pressing. Thermal Transfer Method of Bending Cover Glass Using Multiple Nozzle Parts for Discharge and Extraction.
15. The method of claim 14,

Further comprising the step of extracting the resin flowing into the spacing space through the second nozzle. The method of claim 1, further comprising:
15. The method of claim 14,

Maintaining a temperature of a resin discharged through the first nozzle using a heating unit formed along a longitudinal direction on one side of the first nozzle or preheating the first nozzle before the resin is discharged

The method of claim 1, further comprising the steps of: