EVA (ethylene vinyl acetate) glue coating device for production of photovoltaic panel equipment

文档序号:1453387 发布日期:2020-02-21 浏览:21次 中文

阅读说明:本技术 一种光伏板设备生产用eva胶涂匀装置 (EVA (ethylene vinyl acetate) glue coating device for production of photovoltaic panel equipment ) 是由 不公告发明人 于 2019-11-30 设计创作,主要内容包括:本发明属于光伏板设备生产技术领域,尤其是一种光伏板设备生产用EVA胶涂匀装置,针对目前光伏板设备的EVA涂胶装置存在胶水涂抹不均匀的问题,现提出以下方案,包括支撑操作台,所述支撑操作台的顶部一侧外壁通过螺栓连接有竖直设置的支撑柱,且支撑柱的顶部外壁通过螺栓连接有水平设置的支撑顶板,所述支撑操作台的顶部靠近支撑柱一侧外壁通过螺栓连接有竖直设置的储胶箱。本发明中,该光伏板设备生产用EVA胶涂匀装置,通过设置有除杂垫和第二凸起,在对光伏板设备进行涂胶时,由第一电动滑块的向左移动,带动除杂垫向左移动,第二凸起可以有效的将杂质挂住,并拖动其向左移动,进而实现对涂胶前的区域的除尘除杂效果。(The invention belongs to the technical field of photovoltaic panel equipment production, and particularly relates to an EVA glue coating device for photovoltaic panel equipment production, aiming at the problem of uneven glue coating of an EVA glue coating device of the existing photovoltaic panel equipment, the invention provides a scheme which comprises a supporting operation table, wherein the outer wall of one side of the top of the supporting operation table is connected with a vertically arranged supporting column through a bolt, the outer wall of the top of the supporting column is connected with a horizontally arranged supporting top plate through a bolt, and the outer wall of one side of the top of the supporting operation table, which is close to the supporting column, is connected with a vertically arranged glue storage box through a bolt. According to the EVA glue uniformly-coating device for photovoltaic panel equipment production, the impurity removing pad and the second bulge are arranged, when the photovoltaic panel equipment is coated with glue, the impurity removing pad is driven to move leftwards by the leftward movement of the first electric slide block, impurities can be effectively hung by the second bulge and dragged to move leftwards, and therefore the dust and impurity removing effect of the area before coating with the glue is achieved.)

1. The EVA glue uniformly-coating device for the production of photovoltaic panel equipment comprises a supporting operation table (3) and is characterized in that the outer wall of one side of the top of the supporting operation table (3) is connected with a vertically-arranged supporting column through a bolt, the outer wall of the top of the supporting column is connected with a horizontally-arranged supporting top plate (9) through a bolt, the outer wall of one side, close to the supporting column, of the top of the supporting operation table (3) is connected with a vertically-arranged glue storage box (4) through a bolt, the outer wall of one side of the top of the glue storage box (4) is connected with a vertically-arranged liquid inlet pipe (6) through a bolt, the inner wall of the circumference of the liquid inlet pipe (6) is connected with a first liquid guide pipe (5) in a sliding manner, the outer wall of the top of the first liquid guide pipe (5) is connected with a second liquid guide pipe (7) through a bolt, the outer wall of one side of, the outer wall of one side adjacent to the two second electric guide rails (12) is connected with a second electric slide block (13) in a sliding mode, the outer wall of one side adjacent to the two second electric slide blocks (13) is connected with a first electric guide rail (11) which is horizontally arranged, the outer wall of the bottom of the first electric guide rail (11) is connected with a first fixed block (14) through a bolt, the outer wall of the center of the bottom of the first fixed block (14) is connected with a vertically arranged hydraulic cylinder (16) through a bolt, the outer wall of the bottom of the hydraulic cylinder (16) is connected with a second fixed block (23) through a bolt, the outer walls of two ends of the bottom of the second fixed block (23) are connected with vertically arranged fixed clamping plates (19) through bolts, the same rolling brush (21) is connected between the two fixed clamping plates (19) through a bearing, and the outer wall of the bottom of the circumference of the, and the bottom both sides outer wall of baffle (17) all has spring (22), two of vertical setting through bolted connection the bottom outer wall of spring all has same fender offset plate (18) through bolted connection, and keeps off bottom one side outer wall of offset plate (18) and has edulcoration pad (24) through bolted connection, the bottom outer wall that edulcoration pad (24) has the second arch (35) that the equidistance set up through bolted connection, there is slide board (20) through bolted connection in the bottom opposite side outer wall of edulcoration pad (24), the top central authorities outer wall that keeps off offset plate (18) is provided with first through-hole, and the inner wall of first through-hole and the circumference bottom outer wall sliding connection of pneumatic cylinder (16), the clamp mouth top inner wall that keeps off offset plate (18) is provided with the second recess, and the inner wall of second recess and the outer wall sliding connection all around of second fixed block (23).

2. The EVA glue coating device for the production of photovoltaic panel equipment according to claim 1, wherein the outer wall of the other end of the second liquid guide pipe (7) is connected with a liquid guide hose (10) through a bolt, the outer wall of the bottom of the second liquid guide pipe (7) is connected with the outer wall of the top of the supporting top plate (9) through a bolt, the inner wall of one side of the clamping opening of the glue baffle plate (18) is connected with a liquid distribution pipe (37) through a bolt, the outer wall of the other side of the liquid distribution pipe (37) is connected with glue spraying heads (36) which are equidistantly arranged, and the outer wall of the bottom of the liquid guide hose (10) is connected with the outer wall of one side of the liquid distribution pipe (37) through a.

3. The EVA adhesive leveling device for photovoltaic panel equipment production according to claim 2, wherein a second through hole is formed in the outer wall of the other side of the top of the supporting operation table (3), third grooves are formed in the inner walls of the middle portions of the two sides of the second through hole, electric telescopic rods (26) are connected to the inner walls of the two third grooves through bolts, fixed tooth blocks (25) arranged in an annular array are connected to the outer wall of one adjacent side of the two electric telescopic rods (26) through bolts, fixed groove blocks (27) are connected to the outer walls of the two sides of the bottom of the supporting operation table (3) through bolts, and a supporting screen plate (28) is installed on the inner wall of the notch of each fixed groove block (27).

4. The EVA glue coating device for producing the photovoltaic panel equipment is characterized in that supporting sheets (34) are arranged on the outer walls of the two sides of the top and the two sides of the bottom of the supporting screen plate (28), and the outer walls of the other ends of the four supporting sheets (34) are respectively connected with the supporting groove blocks (27) and the outer walls of the supporting operation table (3) in a sliding manner.

5. The EVA glue coating device for producing the photovoltaic panel equipment is characterized in that the outer walls of four corners at the bottom of the supporting operation table (3) are respectively connected with vertically arranged supporting legs (1) through bolts, and the outer walls of the tops of the adjacent sides of the four supporting legs (1) are respectively connected with a limiting rod (2) through bolts.

6. The EVA glue coating device for producing the photovoltaic panel equipment is characterized in that the outer walls of the middle parts of the adjacent sides of the four supporting legs (1) are respectively connected with a supporting rod (32) through bolts, and the outer walls of the tops of the supporting rods (32) are respectively connected with the same supporting plate (31) in a sliding manner.

7. The EVA glue coating device for producing the photovoltaic panel equipment is characterized in that the outer wall of the top of the supporting screen plate (28) is connected with first bulges (33) which are uniformly arranged at equal intervals through bolts.

8. The EVA adhesive coating device for producing photovoltaic panel equipment according to claim 7, wherein the outer wall of the bottom of one side of the second liquid guide pipe (7) is connected with a liquid pump (8) through a bolt.

9. The EVA adhesive coating device for producing the photovoltaic panel equipment according to claim 8, wherein the outer wall of the middle part of one end of the supporting screen (28) is connected with a first stretching handle (29) through a hinge, and the outer wall of the middle part of one end of the supporting plate (31) is connected with a second stretching handle (30) through a bolt.

10. The EVA adhesive coating device for producing photovoltaic panel equipment according to claim 9, wherein the liquid pump (8), the hydraulic cylinder (16), the first electric slider (15), the second electric slider (13) and the electric telescopic rod (26) are all connected with a switch through wires, and the switch is connected with a power supply through a wire.

Technical Field

The invention relates to the technical field of production of photovoltaic panel equipment, in particular to an EVA (ethylene vinyl acetate) glue coating device for production of photovoltaic panel equipment.

Background

Photovoltaic panel assemblies are power generation devices that produce direct current electricity when exposed to sunlight, and consist of thin solid photovoltaic cells made almost entirely of semiconductor materials (e.g., silicon), simple photovoltaic cells providing energy for watches and computers, and more complex photovoltaic systems providing lighting for houses and supplying power to the grid. The production and manufacture of photovoltaic panels is an important component of new energy development.

In the production and manufacturing process of photovoltaic panel equipment, EVA glue is often needed to bond the components, so that a gluing device of the EVA glue can be used, however, the problems that glue is not uniformly coated, the gluing effect is affected by impurities on the photovoltaic panel, and the photovoltaic panel is bonded with the gluing device due to glue leakage are often existed in the gluing process, and therefore the problem needs to be solved by designing an EVA glue uniformly coating device for producing the photovoltaic panel equipment.

Disclosure of Invention

The invention provides an EVA glue coating device for photovoltaic panel equipment production, which is based on the technical problem that glue is not uniformly coated in an EVA glue coating device of the existing photovoltaic panel equipment.

The invention provides an EVA adhesive coating device for producing photovoltaic panel equipment, which comprises a supporting operation table, wherein the outer wall of one side of the top of the supporting operation table is connected with a vertically arranged supporting column through a bolt, the outer wall of the top of the supporting column is connected with a horizontally arranged supporting top plate through a bolt, the outer wall of one side, close to the supporting column, of the top of the supporting operation table is connected with a vertically arranged adhesive storage box through a bolt, the outer wall of one side of the top of the adhesive storage box is connected with a vertically arranged liquid inlet pipe through a bolt, the circumferential inner wall of the liquid inlet pipe is connected with a first liquid guide pipe in a sliding manner, the outer wall of the top of the first liquid guide pipe is connected with a second liquid guide pipe through a bolt, the outer wall of one side of the bottom of the supporting top plate is provided with a first groove, the inner walls of two sides of the first groove are connected with, and the outer wall of one side adjacent to the two second electric sliding blocks is connected with the same horizontally arranged first electric guide rail through a bolt, the outer wall of the bottom of the first electric guide rail is connected with a first fixed block through a bolt, the outer wall of the bottom center of the first fixed block is connected with a vertically arranged hydraulic cylinder through a bolt, the outer wall of the bottom of the hydraulic cylinder is connected with a second fixed block through a bolt, the outer walls of two ends of the bottom of the second fixed block are connected with vertically arranged fixed clamping plates through bolts, the two fixed clamping plates are connected with the same rolling brush through a bearing, the outer wall of the bottom of the circumference of the hydraulic cylinder is connected with a horizontally arranged baffle through a bolt, the outer walls of two sides of the bottom of the baffle are connected with vertically arranged springs through bolts, the outer walls of the bottoms of the two springs are connected with the same rubber baffle through bolts, and, the bottom outer wall of edulcoration pad has the second arch that the equidistance set up through bolted connection, there is the slide plate through bolted connection in the bottom opposite side outer wall of edulcoration pad, the top central authorities outer wall that keeps off the offset plate is provided with first through-hole, and the circumference bottom outer wall sliding connection of the inner wall of first through-hole and pneumatic cylinder, the double-layered mouthful top inner wall that keeps off the offset plate is provided with the second recess, and the inner wall of second recess and the outer wall sliding connection all around of second fixed block.

Preferably, the outer wall of the other end of the second liquid guide pipe is connected with a liquid guide hose through a bolt, the outer wall of the bottom of the second liquid guide pipe is connected with the outer wall of the top of the supporting top plate through a bolt, the inner wall of one side of a clamping opening of the rubber baffle is connected with a liquid distribution pipe through a bolt, the outer wall of the other side of the liquid distribution pipe is connected with glue spraying heads arranged at equal intervals, and the outer wall of the bottom of the liquid guide hose is connected with the outer wall of one side of the liquid distribution pipe through a.

Preferably, the top opposite side outer wall of the supporting operation platform is provided with a second through hole, the inner walls of the middle parts of two sides of the second through hole are provided with third grooves, the inner walls of the two third grooves are connected with an electric telescopic handle and two electric telescopic handles, the outer wall of one adjacent side of each electric telescopic handle is connected with a fixed tooth block arranged in an annular array through bolts, the outer walls of two sides of the bottom of the supporting operation platform are connected with fixed groove blocks through bolts, and the inner walls of the notches of the two fixed groove blocks are provided with supporting screen plates.

Preferably, the outer walls of the two sides of the top and the two sides of the bottom of the supporting screen plate are provided with supporting sheets, and the outer walls of the other ends of the four supporting sheets are respectively connected with the supporting groove blocks and the outer wall of the supporting operation table in a sliding manner.

Preferably, the outer walls of four corners of the bottom of the supporting operation table are all connected with supporting legs which are vertically arranged through bolts, and the outer wall of the top of one adjacent side of the four supporting legs is connected with a limiting rod through bolts.

Preferably, four the outer wall all has the bracing piece through bolted connection in the middle part of adjacent one side of supporting leg, and the equal sliding connection of top outer wall of bracing piece has same backup pad.

Preferably, the outer wall of the top of the supporting mesh plate is connected with first bulges uniformly arranged at equal intervals through bolts.

Preferably, the outer wall of the bottom of one side of the second liquid guide pipe is connected with an infusion pump through a bolt.

Preferably, the outer wall of the middle part of one end of the supporting screen plate is connected with a first stretching handle through a hinge, and the outer wall of the middle part of one end of the supporting screen plate is connected with a second stretching handle through a bolt.

Preferably, the liquid pump, the hydraulic cylinder, the first electric sliding block, the second electric sliding block and the electric telescopic rod are all connected with a switch through wires, and the switch is connected with a power supply through a wire.

Compared with the prior art, the invention provides an EVA glue coating device for photovoltaic panel equipment production, which has the following beneficial effects:

1. this even device is scribbled with EVA glue in production of photovoltaic board equipment fills up through being provided with the edulcoration to bottom that fills up at the edulcoration is provided with the second arch, when carrying out the rubber coating to photovoltaic board equipment, by the removal left of first electronic slider, drives the edulcoration and fills up the removal left, and the second arch can effectually be hung impurity, and drags its removal left, and then realizes the dust removal edulcoration effect to the region before the rubber coating.

2. This even device is scribbled with EVA glue in production of photovoltaic board equipment, through being provided with glue spraying head and round brush, can realize becoming the side rubber coating that rolls by the round brush, realize even rubber coating, when carrying out the rubber coating, at first the decline pneumatic cylinder, the decline of pneumatic cylinder drives and keeps off the offset plate and descend, by the effect of spring, make the round brush, dust removal pad and slide to one side are in same horizontal plane, when the round brush carries out the rubber coating, the slide to one side can further scribble even with the EVA glue after applying paint with a brush, make the rubber coating become more even, in order to avoid applying paint with a brush device and photovoltaic board equipment bonding together, can set up one deck nanometer coating with a brush the device outer wall.

3. This even device is scribbled with EVA glue in production of photovoltaic board equipment is through being provided with electric telescopic handle to be provided with fixed tooth piece in electric telescopic handle's one end, set fixed tooth piece to claw type structure simultaneously, the area of contact between fixing device and the photovoltaic board equipment that has significantly reduced avoids bonding each other, be provided with first arch at the top that supports the otter board simultaneously, further reduce the area of contact between support otter board and the photovoltaic board equipment, also can avoid the bonding of photovoltaic board equipment and support otter board.

Drawings

FIG. 1 is a schematic sectional structure view of an EVA adhesive coating device for photovoltaic panel production according to the present invention;

FIG. 2 is a schematic structural view of a supporting screen of an EVA (ethylene vinyl acetate) glue coating device for producing photovoltaic panel equipment, provided by the invention;

FIG. 3 is a schematic structural view of an impurity removal mat of an EVA adhesive coating device for photovoltaic panel production according to the present invention;

FIG. 4 is a schematic structural view of a glue blocking plate of the EVA glue uniformly coating device for photovoltaic panel production according to the present invention;

fig. 5 is a schematic view of a fixed gear structure of the EVA glue leveling device for photovoltaic panel equipment production according to the present invention.

In the figure: 1 supporting leg, 2 gag lever post, 3 support operation panel, 4 glue storage tanks, 5 first liquid guide pipe, 6 feed liquor pipes, 7 second liquid guide pipe, 8 drawing liquid pump, 9 roof, 10 drain hose, 11 first electronic guide rail, 12 electronic guide rail of second, 13 electronic slider of second, 14 first fixed block, 15 first electronic slider, 16 pneumatic cylinder, 17 baffle, 18 keep off the offset plate, 19 fixed splint, 20 oblique slide, 21 round brush, 22 spring, 23 second fixed block, 24 edulcoration pad, 25 fixed tooth piece, 26 electric telescopic handle, 27 fixed channel block, 28 support otter board, 29 first tensile handle, 30 second tensile handle, 31 backup pad, 32 bracing piece, 33 first arch, 34 backing sheet, 35 second arch, 36 glue-spraying head, 37 branch liquid pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-5, an EVA glue coating device for photovoltaic panel equipment production comprises a support operation table 3, the outer wall of one side of the top of the support operation table 3 is connected with a vertically arranged support column through a bolt, the outer wall of the top of the support column is connected with a horizontally arranged support top plate 9 through a bolt, the outer wall of one side of the top of the support operation table 3, which is close to the support column, is connected with a vertically arranged glue storage tank 4 through a bolt, the outer wall of one side of the top of the glue storage tank 4 is connected with a vertically arranged liquid inlet pipe 6 through a bolt, the circumferential inner wall of the liquid inlet pipe 6 is connected with a first liquid guide pipe 5 in a sliding manner, the outer wall of the top of the first liquid guide pipe 5 is connected with a second liquid guide pipe 7 through a bolt, the outer wall of one side of the bottom of the support top plate 9 is provided with a first groove, the inner walls of two sides of the, and the outer walls of the adjacent sides of the two second electric sliding blocks 13 are connected with the same horizontally arranged first electric guide rail 11 through bolts, the outer wall of the bottom of the first electric guide rail 11 is connected with a first fixed block 14 through bolts, the outer wall of the bottom center of the first fixed block 14 is connected with a vertically arranged hydraulic cylinder 16 through bolts, the outer wall of the bottom of the hydraulic cylinder 16 is connected with a second fixed block 23 through bolts, the outer walls of the two ends of the bottom of the second fixed block 23 are connected with vertically arranged fixed clamping plates 19 through bolts, the same rolling brush 21 is connected between the two fixed clamping plates 19 through a bearing, the outer wall of the circumferential bottom of the hydraulic cylinder 16 is connected with a horizontally arranged baffle plate 17 through bolts, the outer walls of the two sides of the bottom of the baffle plate 17 are connected with vertically arranged springs 22 through bolts, and the outer walls of the, and the outer wall of one side of the bottom of the rubber baffle plate 18 is connected with an impurity removing pad 24 through a bolt, the outer wall of the bottom of the impurity removing pad 24 is connected with second bulges 35 which are arranged at equal intervals through bolts, by arranging the impurity removing pad 24 and arranging the second protrusion 35 at the bottom of the impurity removing pad 24, when the photovoltaic panel equipment is coated with glue, the first electric slide block 15 moves leftwards to drive the impurity removing pad to move leftwards, the second bulge 35 can effectively hang the impurities and drag the impurities to move leftwards, further realizing the dust and impurity removing effect of the area before gluing, the outer wall of the other side of the bottom of the impurity removing pad 24 is connected with an inclined sliding plate 20 through a bolt, the outer wall of the center of the top of the rubber baffle plate 18 is provided with a first through hole, and the inner wall of the first through hole is connected with the outer wall of the circumferential bottom of the hydraulic cylinder 16 in a sliding manner, the inner wall of the top of the clamping opening of the rubber baffle plate 18 is provided with a second groove, and the inner wall of the second groove is connected with the outer wall of the periphery of the second fixed block 23 in a sliding manner.

In the invention, the outer wall of the other end of the second liquid guide pipe 7 is connected with a liquid guide hose 10 through a bolt, the outer wall of the bottom of the second liquid guide pipe 7 is connected with the outer wall of the top of the supporting top plate 9 through a bolt, the inner wall of one side of a clamping opening of a rubber baffle plate 18 is connected with a liquid distribution pipe 37 through a bolt, the outer wall of the other side of the clamping opening of the liquid distribution pipe 37 is connected with glue spraying heads 36 which are arranged equidistantly, the outer wall of the bottom of the liquid guide hose 10 is connected with the outer wall of one side of the liquid distribution pipe 37 through a bolt, the outer wall of the other side of the top of the supporting operation table 3 is provided with a second through hole, the inner walls of the middle parts of two sides of the second through hole are provided with third grooves, the inner walls of the two third grooves are both connected with electric telescopic rods 26 through bolts, the outer wall of, meanwhile, the fixed tooth blocks 25 are arranged to be claw-shaped structures, so that the contact area between the fixing device and the photovoltaic panel equipment is greatly reduced, mutual adhesion is avoided, the outer walls of two sides of the bottom of the supporting operation table 3 are connected with the fixed groove blocks 27 through bolts, the inner walls of the notches of the two fixed groove blocks 27 are provided with the supporting screen plates 28, the outer walls of two sides of the top and two sides of the bottom of the supporting screen plates 28 are provided with the supporting sheets 34, the outer walls of the other ends of the four supporting sheets 34 are respectively in sliding connection with the outer walls of the supporting groove blocks 27 and the supporting operation table 3, the contact area between the supporting screen plates 28 and the fixed groove blocks 27 as well as the supporting operation table 3 can be effectively reduced through the arranged supporting sheets 34, the adhesion of the supporting screen plates and the supporting operation table 3 due to glue leakage is avoided, the supporting legs 1 are difficult to move, the outer walls of four corners of the, the outer wall of the middle part of one adjacent side of the four supporting legs 1 is connected with a supporting rod 32 through bolts, the outer wall of the top part of the supporting rod 32 is connected with the same supporting plate 31 in a sliding way, the outer wall of the top part of the supporting screen plate 28 is connected with first bulges 33 which are uniformly arranged at equal intervals through bolts, the top part of the supporting screen plate 28 is provided with the first bulges 33, the contact area between the supporting screen plate 28 and photovoltaic panel equipment is further reduced, the photovoltaic panel equipment and the supporting screen plate 28 can be prevented from being bonded, the outer wall of the bottom part of one side of the second liquid guide pipe 7 is connected with a liquid pump 8 through bolts, the outer wall of the middle part of one end of the supporting screen plate 28 is connected with a first stretching handle 29 through hinges, the outer wall of the middle part of one end of the supporting plate 31 is connected with a second stretching handle 30 through bolts, and the switch is connected with a power supply through a lead.

When the device is used, a user firstly needs to place photovoltaic panel equipment on a supporting screen plate 28, adjust the position of a fixed tooth block 25 by adjusting the length of an electric telescopic rod 26 so as to fix the photovoltaic panel, then adjust a first electric slide block 15 and a second electric slide block 13 so as to adjust the position of a rolling brush 21, then descend a hydraulic cylinder 16 so that the rolling brush 21 is positioned on the surface of the photovoltaic panel, and due to the action of a spring 22, an impurity removing pad 24 and an inclined slide plate 20 are prevented from being pressed with the photovoltaic panel, the impurity removing pad 24 with a second bulge 35 can remove impurities in an area needing glue coating, then start a liquid pump 8, spray paint on the rolling brush 21 through a glue spraying head 36 so as to coat the photovoltaic panel, the barrel-shaped arrangement of the rolling brush 21 is combined with the inclined slide plate 20 so as to achieve uniform glue coating, a supporting plate 31 is arranged at the bottom of the device, so as to collect glue leakage generated during glue coating, avoid polluting, through setting up first catheter 5 and second catheter 7, can realize mending gluey and changing of glue storage box 4 through the separation with first catheter 5 and second catheter 7.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

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