WO2006115309A1

WO2006115309A1 - Apparatus for horizontally packing thin film display panel

Info

Publication number: WO2006115309A1
Application number: PCT/KR2005/001363
Authority: WO
Inventors: Seong-Mo Kim
Original assignee: Gps Korea Co., Ltd.
Priority date: 2005-04-28
Filing date: 2005-05-10
Publication date: 2006-11-02

Abstract

Disclosed herein is an apparatus for packing a thin film display panel produced in the form of a half-finished product. The panel packing apparatus includes a stacking frame (100) which is open at a center thereof. A seating step (200) is provided inside the stacking frame (100) such that the thin film display panel (M) is horizontally seated thereon.

Description

APPARATUS FOR HORIZONTALLY PACKING THIN FILM

DISPLAY PANEL

Technical Field

[1] The present invention relates, in general, to an apparatus for packing a thin film display panel produced in the form of a half-finished product and, more particularly, to an apparatus for packing a thin film display panel, which has an improved structure, thus having a simple structure and reducing manufacturing costs as well as transportation costs.

Background Art

[2] Thin film display panels have been rapidly becoming an important industry. The thin film display panels include plasma display panels, thin film transistor-liquid crystal displays (TFT-LCD), organic light emitting diodes (OLED), etc. which are superior in display capability, including display capacity, luminance, contrast, afterimage, viewing angle, are thin, and are capable of displaying a large screen.

[3] Such a thin film display panel frequently comes onto the market in the form of a half-finished product. That is, the thin film display panel is not exported in the form of a finished product but is exported in the form of a half-finished product which is separated into a module and a casing, for economical purposes. Thereafter, the product is assembled in an importing country.

[4] As such, a thin film display television may be produced in an intermediate manufacturing factory, in the form of a thin film display panel module which is a half- finished product and has only a glass substrate, a drive circuit, a power supply, and a video card, according to production conditions. Alternatively, the thin film display television may be produced in the form of a finished product equipped with a TV receiving set (tuner), a speaker, and others.

[5] The thin film display panel may be broken or damaged by even small vibrations or shocks during transportation, because of the properties of the thin film display panel which is thin and has a large screen. Further, defective electrodes and partition walls, or foreign materials may cause the failure of the drive circuit.

[6] Thus, in order to more safely transport the thin film display panel, as shown in FIG.

1, a conventional box for packing a thin film display panel includes a main body 1 and a cover 2. Partition walls 3 are provided at regular intervals such that thin film display panels M produced in the form of a half-finished product are stored in a space defined by the main body 1 and the cover 2.

[7] Further, additional protecting units 4 are manufactured to protect drive circuits Ml provided on back surfaces and outer circumferential surfaces of the thin film display panels which are stored in the packing box and are produced in the form of a half- finished product. The protecting units 4 are assembled to be secured to the back surfaces of the thin film display panels. In such a state, the thin film display panels are packed in the packing box to be supplied to a consumer.

[8] Such a packing method may be useful in the case where the product is supplied to an end user in the form of a finished product. However, the packing method is unsuitable for packing the thin film display panel which is a half-finished product.

[9] In a detailed description, when the thin film display panel in the form of a half- finished product is supplied to an assembly plant, the protecting units assembled to protect the thin film display panel must be removed from the panel, thus being complicated and inconveniencing manufacturers. Further, the protecting unit removed from the thin film display panel is almost always discarded, so that it is uneconomical.

[10] Moreover, the factory producing the thin film display panel which is a half-finished product must mount the protecting device to each thin film display panel. Due to the manufacture of the protecting device, product costs are increased, thus lowering price competitiveness .

[11] Further, the width of a space, which is defined in the packing box to receive the thin film display panel, must be increased, because of the protecting unit fastened to the thin film display panel to protect the thin film display panel which is a half-finished product. Furthermore, since a plurality of partition walls defining the panel storage space has a predetermined width, the number of thin film display panels which may be loaded in the packing box is limited. Thus, this is problematic in that the number of shipments and the transportation costs are increased.

[12] Thin film display panels into which advanced technology is introduced are frequently exported abroad. Thus, high transportation costs are incurred due to frequent shipments. Disclosure of Invention Technical Problem

[13] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide an apparatus for horizontally packing a thin film display panel, which is constructed so that it is not necessary to additionally handle the thin film display panel produced in the form of a half-finished product, and it is possible to input the thin film display panel into a production line as soon as the thin film display panel is separated from a transported packing box, thus increasing productivity. This invention allows the thin film display panel to be safely protected using only the packing apparatus itself without using additional protecting unit, unlike the prior art, thus solving the problems that may occur due to the use of the additional protecting unit, and decreasing an economical burden on a manufacturing company which produces the thin film display panel in the form of the half-finished product, therefore enhancing price competitiveness.

[14] Another object of this invention is to provide an apparatus for packing a thin film display panel, which has a means for horizontally loading thin film panel display panels and stacking the loaded panels in multiple layers, thus adjusting the height of the stacked panels to correspond to the height of a storage space of transportation means having various heights, and which has a means for protecting the thin film display panels without a protecting unit or a partition wall, unlike conventional packing boxes, thus increasing the number of thin film display panels that can be packed in one packing apparatus, therefore reducing the number of shipments and reducing transportation costs.

Technical Solution

[15] In order to accomplish the object, the present invention provides an apparatus for packing a thin film display panel, including a stacking frame which is open at a center thereof, and a seating step provided inside the stacking frame such that the thin film display panel is horizontally seated thereon. Advantageous Effects

[16] As described above, the present invention provides an apparatus for horizontally packing a thin film display panel, which is constructed so that a stacking frame 100 and a seating surface of a seating step 200, contacting a received thin film display panel, are formed to correspond to the thin film display panel so as to safely transport and move the panel, and which is constructed so that the stacking frame 100 and the seating step 200 have different densities to resist external shocks. Thus, according to this invention, it is easier to handle and material costs are lower, thereby manufacturing costs are low and the apparatus is very economical, in comparison with a conventional packing box.

[17] Further, this invention does not uses an additional protecting unit to protect a drive circuit which is provided on a back surface of the thin film display panel M, unlike the prior art. Thus, this invention eliminates complication and inconvenience due to the use of the additional protecting unit, while perfectly realizing a packing function and sufficiently absorbing shocks generated during long-distance transportation. A recess 210 is provided to prevent interference with the drive circuit Ml which is provided on the back surface of the thin film display panel, thus preventing the drive circuit Ml from being damaged. [18] Furthermore, it is possible to variably adjust the number of layered packing apparatuses. The present invention is capable of increasing the number of thin film display panels that may be packed in one packing apparatus having a predetermined size, thus reducing the number of shipments and transportation costs.

Brief Description of the Drawings [19] FIG. 1 is a sectional view to show the use of a conventional packing box for packing a thin film display panel; [20] FIG. 2 is a perspective view to show an apparatus for horizontally packing a thin film display panel, according to an embodiment of the present invention; [21] FIG. 3 is a perspective view to show the state where the panel packing apparatuses of this invention are layered; [22] FIG. 4 is a sectional view to show the state where the panel packing apparatuses of this invention are layered; [23] FIG. 5 is a perspective view to show reinforcing pins which are provided on the apparatus for horizontally packing the thin film display panel, according to this invention; [24] FIG. 6 is a perspective view to show the state where the panel packing apparatuses having the reinforcing pins of this invention are layered; [25] FIG. 7 is a sectional view to show the state where the panel packing apparatuses having the reinforcing pins of this invention are layered; [26] FIG. 8 is a perspective view to show reinforcing bars which are provided on the apparatus for horizontally packing the thin film display panel, according to this invention; [27] FIG. 9 is a sectional view to show the state where the panel packing apparatuses having the reinforcing bars of this invention are layered; [28] FIG. 10 is a perspective view to show panel packing apparatuses which are laterally coupled to each other, according to another embodiment of the present invention; [29] FIG. 11 is a perspective view to show panel packing apparatuses which are laterally coupled to each other and are provided with reinforcing pins, according to another embodiment of the present invention; and [30] FIG. 12 is a partially cutaway perspective view to show panel packing apparatuses which are laterally coupled to each other and are provided with reinforcing bars, according to another embodiment of the present invention. [31] <Description of reference characters of important parts>

[32] 100: stacking frame 110: locking protrusions

[33] 120: locking grooves 130: grasp recesses

[34] 140: pin insert holes 200: seating step [35] 210: recesses 300: cover

[36] 310: cover locking grooves 320: support step

[37] 400: cushions 500: reinforcing pins

[38] 600: reinforcing bars M: thin film display panel

[39] Ml: drive circuit

Best Mode for Carrying Out the Invention

[40] Hereinafter, the construction and operation of the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[41] FlG. 2 is a perspective view to show an apparatus for horizontally packing a thin film display panel, according to an embodiment of the present invention, FlG. 3 is a perspective view to show the state where the panel packing apparatuses of this invention are layered, FlG. 4 is a sectional view to show the state where the panel packing apparatuses of this invention are layered, FlG. 5 is a perspective view to show reinforcing pins which are provided on the apparatus for horizontally packing the thin film display panel, according to this invention, FlG. 6 is a perspective view to show the state where the panel packing apparatuses having the reinforcing pins of this invention are layered, FlG. 7 is a sectional view to show the state where the panel packing apparatuses having the reinforcing pins of this invention are layered, FlG. 8 is a perspective view to show reinforcing bars which are provided on the apparatus for horizontally packing the thin film display panel, according to this invention, and FlG. 9 is a sectional view to show the state where the panel packing apparatuses having the reinforcing bars of this invention are layered.

[42] As shown in the drawings, the apparatus for packing the thin film display panel M includes a stacking frame 100 which is open at a center thereof, and a seating step 200 which is provided inside the stacking frame 100 so that the thin film display panel M is horizontally seated thereon.

[43] Further, a plurality of locking protrusions 110 is provided on an upper surface of the stacking frame 100, thus preventing the panel packing apparatus from leaning to one side when the panel packing apparatuses are stacked. A plurality of locking grooves 120 is provided on a lower surface of the stacking frame 100 to correspond to the locking protrusions 110. Of the stacked panel packing apparatuses, the uppermost panel packing apparatus includes a cover 300 that closes the upper portion of the stacking frame 100 so as to absorb external shocks.

[44] The stacking frame 100 includes a reinforcing member so as to prevent the stacking frame 100 from being bent due to the weight of each panel packing apparatus on which the thin film display panel M is seated, when the panel packing apparatuses are stacked, in addition to firmly stacking the panel packing apparatuses.

[45] In this case, when the reinforcing member comprises a plurality of reinforcing pins

500, pin insert holes 140, which are open at both ends thereof and have a shape corresponding to that of the reinforcing pins 500, are provided on an edge of the stacking frame 100. The number of pin insert holes 140 is equal to the number of the reinforcing pins 500. Each of the reinforcing pins 500 is force-fitted into the corresponding pin insert hole 140.

[46] Meanwhile, when the reinforcing member comprises a plurality of reinforcing bars

600, each reinforcing bar 600 is integrally installed in each side of stacking frame 100.

[47] Further, in order to firmly lock the cover 300 to the stacking frame 100, cover locking grooves 310 are provided on the cover 300 at positions corresponding to the locking protrusions 110 provided on the stacking frame 100. A support step 320 is provided on the cover 300 to close the open central portion of the stacking frame 100. Preferably, the support step 320 has an overall length which is suitable to support the thin film display panel M loaded in the stacking frame 100.

[48] The stacking frame 100 and the seating surface of the seating step 200 on which the thin film display panel M is seated are formed to correspond to the appearance of the thin film display panel M, thus absorbing shocks applied to the thin film display panel M. Further, recesses 210 are provided in the seating step 200 of the stacking frame 100, thus defining spaces for protecting drive circuits Ml of the thin film display panel M which is seated on the seating step 200 of the stacking frame 100.

[49] Further, grasp recesses 130 are provided at corresponding positions on the inner surface of the stacking frame 100, thus allowing a person to easily grasp the thin film display panel M.

[50] The stacking frame 100 and the seating step 200, which are integrated with each other, are made of expanded polypropylene (EPP) which has a predetermined strength and elasticity, or other materials having physical properties similar to EPP, such as expanded polyethylene (EPE) or EPS, thus allowing the received contents to be safely transported while resisting external shocks. In this case, the stacking frame 100 and the seating step 200, made of the same material, are manufactured to have different density.

[51] In a detailed description, the stacking frame 100 has a density of 70~60kg/D, whereas the seating step 200 has a density of 25~35kg/D. The density of the stacking frame 100 defining the appearance of the apparatus is large, thus preventing the apparatus from being deformed due to external shocks transmitted during transportation. Conversely, the density of the seating step 200 forming the inside of the apparatus is small, so that the seating step 200 is deformed within a predetermined range, when the external shocks are transmitted to the seating step 200, thus absorbing the shocks applied to the received thin film display panel M, therefore protecting the thin film display panel M.

[52] In this case, the process of providing dual density to the stacking frame 100 and the seating step 200, which are integrated with each other and are made of the same material, is executed as follows. That is, a cavity and a plug inserted into the cavity and having a molding space which is equal in shape to the packing apparatus of this invention are prepared. A partition is installed in the cavity to separate the stacking frame 100 from the seating step 200. Next, either of a cavity part having the shape of the stacking frame 100 or a cavity part having the shape of the seating step 200, for example, the cavity part having the shape of the stacking frame 100, is charged with foam bead having high density, thus performing a molding process.

[53] After the primary charging process using the foam bead having the high density is carried out, the partition is removed. Next, foam bead having a small density is charged in the cavity part having the shape of the seating step 200, so that the secondary molding process is implemented. In this way, it is possible to produce a product which is made of the same material but has dual density.

[54] Further, a plurality of cushions 400 each having the shape of a small piece is placed between front and back surfaces of facing thin film display panels M, when the thin film display panels are piled up in multiple layers, thus preventing the facing thin film display panels M from striking each other, even if the seating steps 200 become deformed due to shocks, in addition to having an auxiliary shock absorbing function, therefore affording safer transportation. In this case, it is preferable that the density of the cushions 400 be equal to or smaller than that of the seating step 200.

[55] FIG. 10 is a perspective view to show panel packing apparatuses which are laterally coupled to each other, according to another embodiment of the present invention, FIG. 11 is a perspective view to show panel packing apparatuses which are laterally coupled to each other and are provided with reinforcing pins, according to another embodiment of the present invention, and FIG. 12 is a partially cutaway perspective view to show panel packing apparatuses which are laterally coupled to each other and are provided with reinforcing bars, according to another embodiment of the present invention.

[56] As shown in the drawings, one panel packing apparatus is horizontally coupled to other panel packing apparatuses having the same shape, thus minimizing gaps between the panel packing apparatuses which are piled up in multiple layers, therefore minimizing gaps between the panel packing apparatuses loaded into a transportation means, such as a container. Such a construction allows more packing apparatuses to be loaded.

[57] In this case, a stacking frame 100 of each of the panel packing apparatuses which are horizontally coupled to each other includes a reinforcing member to allow the panel packing apparatuses to be firmly piled up.

[58] When the reinforcing member comprises a plurality of reinforcing pins 500, pin insert holes 140, which are open at both ends thereof and have the shape corresponding to that of the reinforcing pins 500, are provided on an edge and an inside surface of each of the stacking frames 100 which are horizontally coupled to each other. The number of pin insert holes 140 is equal to that of the reinforcing pins 500. Each of the reinforcing pins 500 is force-fitted into the corresponding pin insert hole 140.

[59] Meanwhile, when the reinforcing member comprises a plurality of reinforcing bars

600, each reinforcing bar 600 is integrally installed in each side forming the edge and the inside surface of the stacking frame 100.

[60] When one desires to receive the thin film display panel M in the panel packing apparatus constructed as described above, the thin film display panel M is put into the open part of the stacking frame 100.

[61] At this time, the stacking frame 100 and the seating surface of the seating step 200, contacting the received thin film display panel M, correspond to the appearance of the received thin film display panel M, thus reducing shocks transmitted during transportation.

[62] Further, the thin film display panel M is received such that the back surface thereof faces the bottom. The reason why the back surface of the panel M faces the bottom is because the drive circuits Ml provided on the back surface of the thin film display panel M are located in the recesses 210 of the seating step 200, thus preventing the drive circuits Ml from being damaged by interference or contact with the stacking frame.

[63] Through such a method, the thin film display panels M are horizontally loaded in the corresponding panel packing apparatuses.

[64] Afterwards, in order to stack the panel packing apparatuses in which the thin film display panels M are horizontally loaded, the cushion 400 is laid on each of the thin film display panels M which are horizontally loaded in the panel packing apparatuses. Next, other panel packing apparatuses in which the thin film display panels M are horizontally loaded are laid on the base panel packing apparatuses.

[65] A plurality of locking protrusions 110 and a plurality of locking grooves 120 are provided on upper and lower surfaces of each stacking frame 100 of the panel packing apparatus in such a way as to correspond to each other. Thus, when the panel packing apparatuses are stacked in two layers, a plurality of locking protrusions 110 provided on the panel packing apparatuses constituting one layer is fitted into a plurality of locking grooves 120 provided on the panel packing apparatuses constituting the other layer, thus preventing the panel packing apparatuses from leaning to one side. Further, each of the stacking frames 100 which are stacked vertically is provided with the re- inferring pins 500 or the reinforcing bars 600, thus allowing the panel packing apparatuses to be stably stacked, even when the panel packing apparatuses are stacked ten or more high.

[66] Further, a plurality of the cushions 400 is placed between the front and back surfaces of facing thin film display panels M which are stacked. Thus, even when the seating steps 200 become deformed due to external shocks, the facing thin film display panels M do not collide with each other because of the cushions which are provided between the front and back surfaces of the facing thin film display panels M, in addition to performing an auxiliary shock absorbing action, thus ensuring safe transportation.

[67] In this way, the panel packing apparatuses are stacked in multiple layers to a desired height. Thereafter, the panel packing apparatuses provided at the uppermost layer are covered with the covers 300 so as to be closed. Thereby, the panel packing operation is completed. In this case, the locking protrusions 110 and the cover locking grooves 310 are provided at corresponding positions on the upper surface of the stacking frame 100 of each of the uppermost panel packing apparatuses and the lower surface of each cover 300, so that the cover 300 is firmly locked to the stacking frame 100. Further, the support step 320 provided on the lower surface of each cover 300 absorbs shocks applied to the thin film display panel M received in each uppermost panel packing apparatus, in addition to supporting the thin film display panel M.

[68] In this case, the desired height of the panel packing apparatuses which are stacked in multiple layers is the height of the panel packing apparatuses which may be variably piled up to correspond to the height of a storage space of transportation means having various sizes, such as vehicles or containers. The conventional packing box is manufactured to have a fixed height. Thus, when the conventional packing boxes are piled up in multiple layers in the storage space of transportation means having various heights, it is impossible to stack the packing boxes even if the storage space of the transportation means is lower than the height of the conventional packing boxes to be stacked on the uppermost layer by even a few centimeters. This invention solves the problem, thus increasing loading efficiency.

[69] Further, when the panels are vertically packed in the conventional packing boxes, the protecting unit must be mounted to each thin film display panel M so as to protect the thin film display panel M, so that a large storage space is required. Further, a plurality of partition walls defining the storage space has a specific width, thus limiting the number of thin film display panels packed in the packing boxes. Conversely, according to this invention, when the thin film display panels M are horizontally packed in the panel packing apparatuses, the stacking frame 100 and the seating surface of the seating step 200, which contact each of the received thin film display panels M, are formed to correspond to the shape of the thin film display panel M, so that the protecting unit mounted to each thin film display panel M is not required. Further, the stacking frame 100 and the seating surface of the seating step 200, which contact each of the thin film display panels M, serve as the partition wall of the conventional packing box, thus increasing the number of panels packed in a unit panel packing apparatus, in comparison with the conventional packing box.

[70] Due to various factors, the loading efficiency of this invention is 40% increased over the loading efficiency of the conventional packing box.

[71] Further, the stacking frame 100 and the seating step 200 of the panel packing apparatus of this invention are manufactured using the same material. However, the stacking frame 100 and the seating step 200 are manufactured such that they have dual density, that is, the density of the stacking frame 100 is higher than that of the seating step 200. Thus, when external shocks are transmitted to the panel packing apparatus during transportation thereof, the density of the stacking frame 100 defining the appearance of the panel packing apparatus of this invention is high, so that the stacking frame 100 is not deformed or bent due to transmitted shocks, thus preventing the thin film display panel M from being damaged. When external shocks are transmitted through the stacking frame 100 to the thin film display panel M, the seating step 200 having the low density is deformed to some extent, thus reducing the shocks.

[72] The cushions 400, disposed between the front and back surfaces of facing thin film display panels M which are piled up, perform an auxiliary shock absorbing action, thus more safely transporting the panels M.

[73] When the thin film display panels M have been transported to a desired place and are unloaded from the panel packing apparatuses, a person puts his or her hands into the grasp recesses 130, which are formed on corresponding inner surfaces of the stacking frame 100, thus taking each panel M out of the associated stacking frame 100. Such a construction allows the panel M to be easily taken out of each stacking frame 100.

[74] According to the embodiment of this invention, the outer surface of one base panel packing apparatus is horizontally coupled to other panel packing apparatuses having the same shape, thus minimizing gaps between the panel packing apparatuses when stacked in multiple layers, therefore minimizing space for receiving panel packing apparatuses loaded into a transportation means, such as a container. Such a construction allows more panel packing apparatuses to be stored in a desired space.

[75] Each of the stacking frames 100 of the panel packing apparatuses which are horizontally coupled to each other includes the reinforcing member to allow the panel packing apparatuses to be firmly piled up. When the reinforcing member comprises a plurality of reinforcing pins 500, the pin insert holes 140, which are open at both ends thereof and have a shape corresponding to that of the reinforcing pins 500, are provided on an edge and an inside surface of each of the stacking frames 100 which are horizontally coupled to each other. The number of pin insert holes 140 is equal to that of the reinforcing pins 500. Each of the reinforcing pins 500 is force-fitted into the corresponding pin insert hole 140.

[76] Meanwhile, when the reinforcing member comprises a plurality of reinforcing bars

600, each reinforcing bar 600 is integrally installed in each side forming the edge and the inside surface of the stacking frame 100, thus allowing the panel packing apparatuses to be stably stacked, even when the panel packing apparatuses are stacked ten or more high.

[77] The present invention has been disclosed as an apparatus for packing a thin film display panel produced in the form of a half-finished product. However, without being limited to the thin film display panel of the half-finished product, this invention may be adapted to pack a thin film display panel produced in the form of a finished product.

Claims

[1] An apparatus for horizontally packing a thin film display panel (M), comprising: a stacking frame (100) open at a center thereof; and a seating step (200) provided inside the stacking frame (100) such that the thin film display panel (M) is horizontally seated thereon. [2] The apparatus according to claim 1, further comprising: a plurality of locking protrusions (110) provided on an upper surface of the stacking frame (100); and a plurality of locking grooves (120) provided on a lower surface of the stacking frame (100) to correspond to the locking protrusions, thus allowing a plurality of panel packing apparatuses to be stacked. [3] The apparatus according to claim 1, wherein a cover (300) is mounted to an upper portion of the stacking frame (100). [4] The apparatus according to any one of claims 1 to 3, wherein a recess (210) is provided at a predetermined position on the seating step (200), and defines a space for protecting a drive circuit (Ml) of the thin film display panel (M) which is seated on the seating step. [5] The apparatus according to any one of claims 1 to 3, wherein the stacking frame

(100) and the seating surface of the seating step (200) are formed to correspond to an appearance of the thin film display panel (M), so that the thin film display panel (M) is stably seated on the stacking frame and the seating surface of the seating step. [6] The apparatus according to any one of claims 1 to 3, wherein the stacking frame

(100) and the seating step (200), which are integrated with each other, have different densities, the stacking frame (100) having a density of 70-60 kg/D, and the seating step (200) having a density of 25-35 kg/D. [7] The apparatus according to any one of claims 1 to 3, wherein at least one additional panel packing apparatus having a shape identical to that of the base panel packing apparatus is coupled to an outer surface of the base panel packing apparatus. [8] The apparatus according to claim 4, wherein the stacking frame (100) comprises a reinforcing member. [9] The apparatus according to claim 8, wherein the reinforcing member comprises a plurality of reinforcing pins (500), and a plurality of pin insert holes (140) is provided on an edge of the stacking frame

(100) to correspond to the appearance and number of reinforcing pins (500). [10] The apparatus according to claim 8, wherein the reinforcing member comprises a plurality of reinforcing bars (600), the reinforcing bars (600) being inserted into the stacking frame (100). [11] The apparatus according to claim 7, wherein the stacking frame (100) comprises a reinforcing member. [12] The apparatus according to claim 11, wherein the reinforcing member comprises a plurality of reinforcing pins (500), and a plurality of pin insert holes (140) is provided on an edge of the stacking frame

(100) to correspond to the appearance and number of reinforcing pins (500). [13] The apparatus according to claim 11, wherein the reinforcing member comprises a plurality of reinforcing bars (600), the reinforcing bars (600) being inserted into the stacking frame (100).