JP6720240B2 - Method for manufacturing laminated plate casing member - Google Patents

Description

The present invention relates to a method of manufacturing a plate-shaped or tray-shaped casing member by a process step including press molding from a laminated material, and particularly, a casing for preventing end surfaces of respective layers forming the laminated material from being exposed to the outside. The present invention relates to a method for manufacturing a member.

An OLED display is a self-luminous display in which each pixel of the OLED panel emits light by itself without requiring a backlight. Generally, a panel of an OLED display includes an encap (encapsulation film), an OLED element, a CRT (Color Refiner on TFT), a glass, and an ARF (Anti Reflection Film).

Generally, an OLED device has an electrode and an organic layer. When a power source is applied, holes and electrons from the electrodes are injected into the organic layer, excitons combined with these in the organic layer become a ground state, and emit light. When oxygen or moisture flows into such an OLED element, problems such as shortening of life and reduction of luminous efficiency are induced. Therefore, the manufacturing of the organic light emitting diode display includes an encapsulation process in which an encapsulation structure for preventing permeation of oxygen or moisture is provided on the OLED panel having the OLED element.

FIG. 1 shows the structure of a general display. According to FIG. 1, the display includes a display panel (particularly an OLED panel), a backboard as a plate-shaped casing member that covers the back surface of the display panel, and a cabinet as a frame-shaped casing member that covers the end face around the display panel. (Middle cabinet), a protruding portion to the inside of the cabinet, and a pad arranged between the edge portion of the display panel. A double-sided adhesive tape is used to fasten the backboard and the cabinet constituting the display as shown in FIG. That is, the backboard and the cabinet are fastened by sandwiching the double-sided adhesive tape between the upper surface of the edge portion of the backboard and the protrusion to the inside of the cabinet.

This backboard (back cover) can be manufactured from a laminated material (laminated sheet) including a metal layer by a process including cutting or punching into a predetermined size. Here, the end surface of the laminated material including the metal layer has a sharp edge and may damage the user's skin or clothes, so that it is not exposed to the outside. In addition, when the lower surface of the laminated material (the surface that comes to the outside of the product) is coated or plated for coloring, decoration, protection of the inside, etc., the end surface formed by cutting or punching has a coating layer There is no plating layer.

In other words, a separate cabinet (middle cabinet: M/C) is required to prevent the end surface of the backboard and the end surface of the pad from being exposed to the outside, which leads to an increase in product unit price and a separate assembly process. There is a problem that is required.

Korean Published Patent No. 2016-0019751 Korean Published Patent No. 2014-0094694

The problem to be solved by the present invention is to provide a method of preventing the end face of the pad from being exposed without a separate member.

Another problem to be solved by the present invention is to provide a process in which the bending rigidity of a flat portion is excellent and the end surface is easily finished.

Another problem to be solved by the present invention is to provide a display whose manufacturing cost is reduced.

Therefore, a method for manufacturing a plate-shaped or tray-shaped casing member from a laminated material including an upper metal layer, a lower metal layer, and a resin layer sandwiched by these metal layers of the present invention is a cutter (cutting tool). ) Using the edge portion of the upper metal layer and the resin layer, so that the edge portion of the resin layer is cut relatively inward from the edge portion of the upper metal layer, A first pressing step in which the edge portion of the upper metal layer is pushed toward the lower metal layer and bent to at least partially cover the end surface of the resin layer;
Among the edge portions of the lower metal layer protruding outward from the edge of the upper metal layer that has undergone the first pressing step, at least the outermost portion is folded back by 180 degrees using a hemming die, thereby While preventing the end surface from being exposed to the outside, by folding the edge portion of the lower metal layer toward the upper metal layer side, the end surface of the upper metal layer, or the end surface of the upper metal layer and the resin layer , A second pressing step of covering so as not to be exposed to the outside.

In particular, the laminated material press molding method according to the present invention uses a hemming die (jig) for the outermost portion of the edge portion of the metal layer located relatively lowermost (the surface exposed to the outside). The cut surface of the laminated material is not exposed by being folded back 180 degrees and further from the inner side portion to the upper metal layer side. In this way, a separate middle cabinet is used by folding back the metal layer 180 degrees using a hemming die and further folding back to the side of the upper metal layer so that the cut surface of the laminated material is not exposed. There is no need.

By not using a separate middle cabinet in this manner, there are advantages that the manufacturing cost is reduced and the appearance finishing treatment is excellent.

It is a figure which shows a general display structure. It is a lamination sectional view showing the structure of the lamination material concerning one embodiment of the present invention. It is a figure which shows the cutting process about the edge part of the laminated material which concerns on one Embodiment of this invention. FIG. 6 is a laminated cross-sectional view showing a state of the laminated material after the edge portion of the upper metal layer and the edge portion of the resin layer according to the embodiment of the present invention are cut, and then the edge portion of the upper metal layer is pushed and bent. .. It is a figure which shows the laminated material state which assembled the display panel and the bezel after folding back the edge part of a lower metal layer in two steps. It is a flow chart which shows the process of processing the layered material concerning one embodiment of the present invention. It is a figure which shows the processing method of the laminated material which concerns on other embodiment of this invention.

The above-mentioned further aspects of the present invention will become more apparent by the preferred embodiments described with reference to the accompanying drawings. Hereinafter, these embodiments will be described in detail so that those skilled in the art can easily understand and reproduce the same.

FIG. 2 shows a laminated material according to an embodiment of the present invention. Hereinafter, the laminated material according to the embodiment of the present invention will be described in detail with reference to FIG.

According to FIG. 2, the laminated material 100 includes an upper metal layer 102, a resin layer 104, and a lower metal layer 106. Further, according to FIG. 2, the end surfaces (cut surfaces from the large-sized sheet material) of the respective materials forming the laminated material form one plane.

FIG. 3 shows a process of processing a laminated material according to an embodiment of the present invention. Next, the process of processing the laminated material according to the embodiment of the present invention will be described in detail with reference to FIG.

As described above, the longitudinal section (cut surface) of the laminated material 100 has one plane. In such a state, a vertical cross section (edge portion) of the laminated material is processed using a cutter (a cutting tool, particularly a rotary cutting tool mounted on a drive shaft such as a lathe). As shown in FIG. 3, a “T-cutter” (T-slot cutter or T-slot end mill) is used as the cutter, and the edge of the upper metal layer 102 and the resin layer 104 are cut by using such a cutter. Cut the edge and at the same time. In this case, the edge portion of the resin layer 104 is cut relatively more than the edge portion of the upper metal layer 102. That is, of the cutter, the resin layer 104 is cut using a portion having a relatively large diameter, and the upper metal layer 102 is cut using a portion having a relatively small diameter. The upper metal layer 102 and the resin layer 104 of the laminated material are cut by the cutter as shown in FIG. At this time, the lower metal layer 106 is not cut at all, or the upper surface portion is slightly cut.

FIG. 4 shows a process of processing the laminated material after the upper metal layer and the resin layer according to the embodiment of the present invention are cut. Hereinafter, a process of processing the laminated material after the upper metal layer and the resin layer according to the embodiment of the present invention are cut will be described with reference to FIG.

According to FIG. 4, the edge portion of the upper metal layer 102, which projects relatively outward from the resin layer 104, is pressed and bent toward the lower metal layer 106 by press working. By bending the upper metal layer 102 toward the lower metal layer 106, the edge portion of the upper metal layer 102 is brought into close contact with the end surface of the resin layer 104. FIG. 4 shows a state in which the upper metal layer 102 is in close contact with the entire end surface of the resin layer 104, and in particular, the outermost portion of the bent edge of the upper metal layer 102 is the upper end surface of the lower metal layer 106. Stick to. That is, the upper metal layer 102 has two bent portions 104a and 104b. Of course, depending on the length of the protruding upper metal layer 102, the upper metal layer 102 may have only one bent portion 104a. Also in this case, the entire or substantially the entire end surface of the resin layer 104 can be covered by the edge of the upper metal layer 102.

FIG. 5 shows a state after the lower metal layer is further folded in two stages and then the display panel and the bezel cover are assembled. Hereinafter, the process of processing the laminated material after bending the upper metal layer according to the embodiment of the present invention will be described in detail with reference to FIG.

According to FIG. 5, after bending the upper metal layer 102, the outermost of the edges of the lower metal layer 106 protruding outward from the edge of the upper metal layer 102 using a hemming die. Is folded back 180 degrees to form a folded edge 106a. By thus bending the lower metal layer 106 by 180 degrees using the hemming die, the end surface of the lower metal layer 106 is not exposed to the outside. Then, a bent portion 106b toward the upper metal layer 102 side is formed by a further press working at a position inside the edge portion of the lower metal layer 106 protruding outward. In this manner, the edge portion of the lower metal layer 106 protruding outward and the portion covering the end surface of the laminated material are formed.

As further shown in FIG. 5, the display panel can be arranged and the bezel cover can be assembled so that the pads are sandwiched between the peripheral portions. As shown in FIG. 5, the bezel cover can be assembled by engaging with the folded-back portion of the edge portion of the lower metal layer 106, particularly the folded edge portion 106a. In addition, as further shown in FIG. 5, the folded-back portion of the edge portion of the lower metal layer 106 may cover the end surface of the pad.

In FIG. 5, the vertical wall portion of the bezel cover is shown to be arranged between the folded portion of the edge portion of the lower metal layer 106 and the end faces of the display panel and the pad. However, the vertical wall portion of the bezel cover may cover the folded portion of the edge portion of the lower metal layer 106 from the outside. In this case, the folded portion at the edge of the lower metal layer 106 can be pressed against the inside of the bezel cover to be assembled.

As described above, according to the present invention, the edge portion of the lower metal layer 106 is folded back by 180 degrees using the hemming die to form the folded edge portion 106a, and further, the folded portion 106b is formed inwardly upward. The edges (end faces) of the laminated material can be prevented from being exposed to the outside. As a result, there is no need to perform a step of using a separate member (middle cabinet: M/C) to prevent the edge of the resin layer 104 from being exposed.

FIG. 6 is a flowchart showing a process of processing a laminated material according to an embodiment of the present invention. Hereinafter, the process of processing the laminated material according to the embodiment of the present invention will be described in detail with reference to FIG.

At step S600, a T-cutter (T-slot cutter) is applied to the end surface portion of the laminated material composed of the upper metal layer 102, the resin layer 104 and the lower metal layer 106, and the edges of the upper metal layer 102 and the resin layer 104 are attached. To cut. At this time, the edge of the resin layer 104 is cut relatively inward as compared with the edge of the upper metal layer 102.

In step S602, the edge of the upper metal layer 102, which is cut relatively less than the edge of the resin layer 104, is bent toward the lower metal layer 106. In this case, the upper metal layer 102 may have one bent portion or two bent portions depending on the thickness of the resin layer 104 and the length protruding from the resin layer 104.

In step S604, the lower metal layer 106 is folded back 180 degrees using a hemming die so that the edges of the laminated material are not exposed to the outside.

As described above, according to the present invention, the lower metal layer 106 is folded back by 180 degrees using the hemming die, so that the edge of the resin layer 104 is not exposed to the outside without a separate member.

FIG. 7 shows a laminated material processing method according to another embodiment of the present invention. According to FIG. 7, the laminated material includes an upper metal layer 102, a resin layer 104 and a lower metal layer 106. In FIG. 3, the upper metal layer 102 and the resin layer 104 are cut by using a cutter, and particularly, the resin layer 104 is relatively cut. In contrast, in FIG. 7, the upper metal layer 102 and the resin layer 104 are cut in the same manner, and the bending process of the upper metal layer 102 is not performed. However, in FIG. 7, the process of bending the edge of the lower metal layer 106 by 180 degrees using a hemming die and then bending it upward is performed in the same manner. Therefore, in FIG. 7 as well, the lower metal layer 106 prevents the edges (cut surfaces, end surfaces) of the upper metal layer 102 and the edges (cut surfaces, end surfaces) of the resin layer 104 from being exposed to the outside, thereby using separate members. It is not necessary to perform a step of preventing the end surface of the laminated material from being exposed to the outside.

The present invention refers to a laminated material composed of an upper metal layer, a resin layer and a lower metal layer, but is not limited to this. It is applicable to various laminated materials such as a metal laminated material composed of stainless steel (STS)-aluminum-stainless steel (STS) and a metal laminated material composed of aluminum-cold rolled steel plate (SPCC)-aluminum. is there. That is, the present invention can be applied to various materials that are required to prevent the end faces of a laminated material having a laminated structure from being exposed to the outside. In this case, the above-mentioned effect can be obtained by folding back the material layer located at the lowermost layer by 180 degrees using a hemming die. The upper metal layer and the lower metal layer of the present invention can be formed by a single metal layer such as aluminum or stainless steel, or by the above metal laminated material. Further, the resin layer of the present invention can be formed from, for example, a polyester resin such as polyethylene terephthalate or an olefin resin such as polypropylene.

Although the present invention has been described with reference to the illustrated embodiment, this is exemplary only. Those of ordinary skill in the art will appreciate that various modifications and equivalent implementations of this embodiment are possible.

100 Laminated Material 102 Upper Metal Layer 104 Resin Layer 106 Lower Metal Layer

Claims (5)

In a method for producing a plate-shaped or tray-shaped casing member from a laminated material including an upper metal layer, a lower metal layer, and a resin layer sandwiched by these metal layers,
Using a cutter, for the edge portion of the upper metal layer and the resin layer, the edge portion of the resin layer is cut so as to be relatively inner than the edge portion of the upper metal layer,
A first pressing step for at least partially covering the end surface of the resin layer by pushing and bending the edge of the upper metal layer after cutting to the side of the lower metal layer;
Among the edge portions of the lower metal layer protruding outward from the edge of the upper metal layer that has undergone the first pressing step, at least the outermost portion is folded back by 180 degrees using a hemming die, thereby While preventing the end surface from being exposed to the outside, by folding the edge portion of the lower metal layer toward the upper metal layer side, the end surface of the upper metal layer, or the end surface of the upper metal layer and the resin layer And a second pressing step for covering it so that it is not exposed to the outside, and a method for manufacturing a casing member. The first pressing step is
The upper metal layer forms one fold portion or two fold portions according to the length of the upper metal layer protruding from the end face of the resin layer or the thickness of the resin layer by cutting. A method for producing the described casing member. The cutter is a T-cutter, and the T-cutter has two cutting wheels having different diameters, so that the edge of the upper metal layer and the edge of the resin layer are cut at the cutting step. Method for manufacturing a casing member according to claim 2, characterized in that the parts are cut at the same time. In a method of manufacturing a casing member composed of an upper metal layer , a lower metal layer , and a resin layer located between the upper metal layer and the lower metal layer ,
Cutting the edges of the upper metal layer and the resin layer with a cutter,
Of the edge portion of the lower metal layer protruding outward from the end surface formed by the upper metal layer and the resin layer, at least the outermost portion is folded back by 180 degrees using a hemming die, whereby the end surface of the lower metal layer. While not exposed to the outside, by folding the edge of the lower metal layer to the side of the upper metal layer, the end surface of the upper metal layer, or, the end surface of the upper metal layer and the resin layer, And a pressing step for covering it so that it is not exposed to the outside. A resin layer whose edge is cut by a cutter,
It is located at the upper end of the resin layer, and the edge is cut relatively less than the cutting length of the resin layer by the cutter, and the side surface of the resin layer is cut and left so as not to be exposed to the outside. An upper metal layer in which the edge portion is bent in the direction of the resin layer,
Look including a lower metal layer positioned at the lower end of the resin layer,
At least the outermost portion of the edge portion of the lower metal layer is folded back in the opposite direction so that the end surface of the lower metal layer is not exposed to the outside,
By folding back the edge of the lower metal layer toward the upper metal layer, the end surface of the upper metal layer or the end surfaces of the upper metal layer and the resin layer are covered so as not to be exposed to the outside. It is a laminated material.

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