KR102283717B1 - Method for changing width and length of aluminum panel used in construction of building - Google Patents

Abstract

"형 및 "ㄱ"형 단면의 재생용 측면 프레임을 마련하여 상기 상하로 배치된 패널의 양측 절단부 상에 위치시켜 부재들간의 접촉부에 대한 용접을 하는 단계로 이루어지며, 이러한 공정의 수행을 거쳐서 소재로 제공된 패널은 폭과 길이가 변화된 패널로 재생된다.The present invention relates to a recycling method of an aluminum panel for construction in which an aluminum panel in use is re-formed into a panel having a changed width and length of specific dimensions required at an individual construction site.
The method includes the steps of providing two conventional aluminum panels for construction, cutting and removing a certain section of the lower part of one of the two panels and the part of the upper part of the two panels; removing along the longitudinal direction, cutting and removing the upper and lower frames and the reinforcing frame along the longitudinal direction from a point in the cut width section, and arranging the two panels vertically in a straight line;

It consists of a step of preparing side frames for reproduction of “shaped” and “L”-shaped cross-sections, placing them on the cut-outs on both sides of the panel arranged up and down, and welding the contact portions between the members. The provided panel is reproduced as a panel whose width and length are changed.

Description

How to change the width and length of an aluminum panel for construction

The present invention relates to an aluminum panel used as a formwork for building construction, and more particularly, to an aluminum panel that is in use for construction so that it is re-formed into a panel having a width and length changed to specific dimensions required at an individual construction site. It relates to a method for changing the width and length of an aluminum panel, and to an aluminum panel reshaped by the method.

In general, in the construction of a building such as a building or apartment, a formwork is installed around the wall and the column until the concrete is cured by pouring the concrete slurry to erect the walls, floors and columns of the building.

Since a significant load and lateral pressure by the poured concrete act on the formwork, a high-strength material capable of withstanding such a load is required. As a conventional building formwork, so-called Euroform made of iron has been mainly used. The euroform has a configuration in which an outer frame welded along the outer periphery of the plate body on the rear surface of a square plate body in direct contact with concrete and a reinforcement frame crossing the frame are integrally formed.

On the other hand, in recent years, aluminum panels have been developed and used, which have relatively advantageous formability, handling properties, and recyclability, by replacing the iron Euroform. This is expanding rapidly. The initial aluminum panel had the same structure as the Euroform, and only the material was changed, that is, each frame consisting of a reinforcing frame and an outer frame is separately provided on the rear surface of a rectangular aluminum plate body, and these two members are integrated by welding. there was.

However, in the aluminum panel for construction used these days, a side frame perpendicular to the flat body along both edges of the flat body is extruded into a single body, not a simple flat body. The upper and lower frames are formed at the bottom and upper and lower frames, and the reinforcing frame is fixed in many places between the upper and lower frames by welding, etc. It is manufactured by welding the upper and lower frames and the reinforcing frame after welding the lower ends together. As such, in the case of a panel in which the side frame is integrally extruded with the flat body, the supporting strength of the side frame is significantly improved compared to the case where the side frame is formed by welding on both sides of the rear surface of the plate body made of the conventional simple flat body. In addition, it is advantageous in terms of panel productivity.

On the other hand, the aluminum panel for building formwork mainly consists of two types: a wall panel used for walls and columns and a deck panel used for slab construction. It changes in increments of 50mm up to 600mm and takes on a standard long rectangular shape with heights of 2300mm and 2450mm, and deck panels are also manufactured and shipped in standardized sizes such as 600mm x 1200mm.

However, since the overall length of the wall at the building construction site is not constant, there are cases in which the wall formwork cannot be formed only with the standardized panel. Wall panels have to be manufactured separately, but as a panel producer operating an extrusion facility that is suitable for mass production of standardized panels, it is cumbersome to create new wall panels with non-standard widths. And there is a problem in that it is unavoidable to bear the additional manufacturing cost.

On the other hand, there has been an attempt to manufacture and use a wall panel having a width suitable for the leftover wall using an existing standardized wall panel, particularly a panel used at least once. The above attempt is a method of cutting a certain width along the longitudinal direction of the existing standard wall panel to make it the required width, and then fixing the side frame through welding to the cut longitudinal side part, in this way In the case of manufactured or recycled aluminum panels, since the bonding strength or support strength of the side frame part attached by welding is low, the problem of bursting without being able to withstand the load or lateral pressure applied by the concrete during actual use occurs, and it cannot be put to practical use. there is.

As a conventional method of manufacturing a wall panel with a changed width through recycling of an existing aluminum panel, the flat body, both the outer frame attached and fixed through welding, and the reinforcing frame are separated from each other by cutting, etc. Two or more are cut along the longitudinal direction, and the previously separated outer frame is also cut along the longitudinal direction to complete a plurality of panels by welding the divided flat body and the frame again, which is the complete separation and division of members. However, as the process from cutting to re-welding is complicated and requires a lot of time, it is hardly used in actual construction sites.

And, as a method of regenerating a ready-made Euroform in which a wooden plywood is bonded to an iron frame to a specific width required or to have two types of reduced widths, after removing the wooden plate body from the frame, the longitudinal direction from a certain point in the width direction of the frame After cutting along the cut and cutting into two parts, each side frame is joined to the cut surface through welding to form a frame with a reduced width or intended width, and then the wood board cut to the size of each frame is combined to complete it. A method for regenerating Euroform is known. However, the Euroform regeneration method cannot be applied to the aluminum foam regeneration method produced through extrusion molding of the same material because Euroform is made of a combination of heterogeneous materials such as an iron frame and plywood.

In addition, in the case of building construction, when the standard panel alone does not cover the width of a specific wall as described above, the reason for requiring a panel having a specific dimension (non-standard) width corresponding to the leftover width In order to construct a wall with a height above the height, a new panel of a specific standard (length) suitable for the height must be newly manufactured, or two or more existing panels are cut to an appropriate length and connected up and down to be used.

However, since it is not economical in terms of cost and time to newly produce a new panel having a specific length, it is preferable to use an existing panel. However, since the joint strength of the welded joint is not sufficient, it cannot withstand the load applied from the concrete for wall molding and the joint bursts or deforms.

Republic of Korea Registered Utility Model Publication No. 20-0169470 Republic of Korea Patent Publication No. 10-1005514

The present invention was devised in consideration of the disadvantages and problems of the prior art, and while having a width and length changed through a simple process using a pre-fabricated aluminum panel, the strength of the side frame portion is comparable to that of the original frame. An object of the present invention is to provide a method for manufacturing an aluminum panel of which width and length are changed to be maintained.

Another object of the present invention is to be reborn as a panel having a changed width and length using an aluminum panel that has been used several times at the building construction site and is in a state where it is difficult to use it repeatedly or is in a stage before disposal. An object of the present invention is to provide a method for recycling an aluminum panel so that economic loss and cost can be compensated and a new panel can be recycled.

Another object of the present invention is to provide an aluminum panel for construction manufactured with a width and length changed through the above method, in particular, a non-standard width and length.

The present invention also relates to the improvement of Patent Application No. 10-2018-130568 previously filed by the present applicant. The invention of the previous application is a method of combining the side frame for reproduction to the removed portion by welding after removing a certain width of one side in changing the width of the aluminum panel used in the previous application to a specific width.

However, in the case of aluminum panels, the size (height) of the side frame, the spacing band insertion groove formed in the side frame, and the formation position of the connecting pin insertion hole for connection with the adjacent panel, etc., are slightly different for each manufacturer, so the current construction In the case of performing width change regeneration for use in scrap width with an existing panel having a side frame size different from the aluminum panel used at the construction site to be or will be constructed, both side frames of the panel used for the current construction must be reproduced to support specifications consistent with the side frame of the

Accordingly, in the present invention, the width of the aluminum panel is changed so that the side frame matching the panel of the construction site to be constructed is provided on both sides by changing the width of the panel having different specifications of the side frame, and the length of the standard panel is required Provided is a method for regenerating an aluminum panel whose width and length are simultaneously changed through the common bonding of the side frame to the joint body and the upper and lower joining following width processing of two or more ready-made panels.

The above object of the present invention is;

It is a long rectangular shape with a large length compared to the width, and is provided with side frames that are integrally extruded and perpendicular to the flat body on both sides in the longitudinal direction. providing two building aluminum panels, the frame being fixed by welding;

cutting out a certain section of the lower part of one panel and a certain section of the upper part of the other panel so as to have a specific length required when the two panels are vertically connected;

For each of the panels in which the lower and upper sections are cut, a small cut width section is removed from both sides of the flat body through grinding or cutting along the longitudinal direction. Step to be exposed while maintaining the shape of;

The upper and lower frames and the reinforcing frame are cut along the longitudinal direction from one point in each area of the cut width of the flat body to remove the side frames and the parts connected thereto outside the cut line of the cut width of the flat body. and exposing the outer end of the reinforcing frame to the outside of the panel body by the length of the remaining cut width;

"형 및 "ㄱ" 단면을 구비하며 상기 하부 및 상부 일정 구간이 절단된 상기 두 패널의 합해진 길이와 동일한 길이의 재생용 측면 프레임을 각각 마련하는 단계;a rib having the same thickness as the flat body and extending to the same length as the remaining cut width while integrally extending perpendicular to it

providing a side frame for reproduction having a "shaped" and "a" cross section and having a length equal to the combined length of the two panels from which the lower and upper predetermined sections are cut;

In addition to cutting a certain section of the lower part and upper part, the two panels in which the outer ends of the upper and lower frames and the reinforcing frame protrude to the outside of the remaining cut width of the flat plate are arranged in a straight line up and down so that the longitudinal cuts are in contact. step;

The upper and lower frames and reinforcement frames in which the ribs of the side frames for reproduction are exposed at the remaining cut width by placing each of the side frames for reproduction at both sides of the two panels arranged in a straight line up and down with the side portions cut and removed allowing the ends of the ribs to remain in contact over the entire length of the cut surfaces of the two panels in a state in which they are supported in contact with each other;

Welding to the vertical contact portion of the two panels, the longitudinal contact portion between the rib of the side frame for regeneration and the cut surface of the flat body, the protruding upper and lower frames, and the entire contact portion between the reinforcing frame and the side frame for regeneration the two panels and the side frames for reproducing on both sides are integrated to complete a panel with a changed width and length;

It is achieved by a method of changing the width and length of an aluminum panel for construction, characterized in that it comprises a.

The aluminum panel provided in the first step of the method of the present invention is a panel produced with existing standardized dimensions, and any panel that has been used or has not been used may be used. The standardized dimensions are not strictly managed, but are determined in consideration of the general floor heights that have been applied in buildings for the convenience of mass production by panel producers, and do not have any special meaning or binding force.

Next, in the longitudinal cutting step for the two panels, one panel cuts a certain section of the lower part and the other panel cuts a certain section of the upper part so that the two panels have a specific length required when the two panels are connected up and down. In this case, the lower part of the panel to be positioned on the upper part, that is, a certain section including the lower frame, is cut and removed from the two panels to be connected to the upper and lower parts, while the upper part of the panel to be positioned at the lower part, that is, a certain section including the upper frame. In cutting and removing the panel, the cutting length is selected in consideration of the length of the panel to be finally obtained.

Then, the lower and upper sections of the panel are cut and removed in a small amount on both sides of the flat body of the two panels. In more detail, each of the side frames for reproduction is coupled to the two remaining cut-off widths, so that the width of the reconstructed panel coincides with the width of the scrap.

At this time, the width of the remaining cut width is suitable for ensuring reliable fixation of the side frame for reproduction through securing sufficient welding area between the rib of the side frame for reproduction fixed by welding and the upper and lower frames and the reinforcing frame. It is desirable to ensure that the size is secured. In the case of cutting or polishing the flat body in a small way, the surfaces of the upper and lower frames and the reinforcing frame that have been joined through welding on the bottom surface are exposed as they are while maintaining their original shape without as much damage as possible. It is advantageous in the subsequent welding with the rib of the side frame for regeneration.

Next, when the upper and lower frames and the reinforcing frame are cut and removed along the cut line of the cut width of the flat body of the two panels, the upper and lower frames and the outer ends of the reinforcing frame in the cut width are cut by the length of the remaining cut width. It is exposed as it protrudes to the outside of the panel body. That is, the upper frame and the reinforcing frame of one panel and the lower frame and the reinforcing frame of the other panel protrude outward from both sides of the flat plate whose width is narrowed by cutting.

"형 및 "ㄱ"형 단면의 재생용 측면 프레임을 마련하게 되는데, 이들 재생용 측면 프레임의 재질은 상기 패널과 동일한 재질로 형성하여 이후의 용접이 용이하게 이루어지도록 하는 것이 바람직하다. 그리고 상기 재생용 측면 프레임의 길이는 상기 하부 및 상부 일정 구간이 절단된 두 패널의 합해진 길이와 동일한 길이가 되도록 형성하게 된다.next, "

Side frames for reproduction of “shaped” and “L” cross sections are provided, and it is preferable that the side frames for reproduction are made of the same material as the panel to facilitate subsequent welding. The length of the side frame for the dragon is formed to be the same length as the combined length of the two panels in which the lower and upper predetermined sections are cut.

"형 및 "ㄱ"형 단면의 재생용 측면 프레임의 리브가 잔여 절단 폭 부위에 노출된 상,하 프레임 및 보강 프레임의 표면에 접촉지지된 가운데 리브의 단부가 상기 두 패널의 평판체 절단면의 전체 길이에 걸쳐 접촉상태가 유지되도록 배치하게 된다.Next, the lower and upper sections are cut, respectively, and the longitudinal cuts of the two panels are placed in contact with the upper or lower frame and the outer ends of the reinforcing frame protrude to both sides of the remaining cut width of the flat plate body. above in "

The ribs of the side frames for reproduction of “shaped” and “L” cross-sections are supported in contact with the surfaces of the upper and lower frames and the reinforcing frame exposed at the remaining cut width. It is placed so that the contact state is maintained throughout.

As the next step, the contact part between the upper and lower panels, the upper or lower frame protruding outward from both sides of the upper and lower panel, and all the contact parts between the reinforcing frame and both side frames for regeneration are welded to the member in contact state. to be fixed between them. At this time, argon welding as the most general welding method for aluminum is preferable, and in some cases, other welding methods may be applied.

Through a series of processes according to the present invention as described above, a new standard aluminum panel changed to a predetermined width and length is completed.

"형 및 "ㄱ"형 단면으로서 상기 상,하부 패널의 전체 길이와 동일한 길이의 재생용 측면 프레임을 포함하여 구성되며, 이때 상기 상,하부 패널의 평판체 양 측면과 상기 재생용 측면 프레임의 리브의 단부가 서로 맞닿은 접촉부와 상,하부 패널의 돌출된 상,하 프레임 및 보강 프레임과 재생용 측면 프레임 사이의 접촉부가 용접에 의해 일체로 고정됨을 특징으로 하는 변경된 폭 및 길이를 갖는 건축용 알루미늄 패널을 제공된다.In the present invention, an upper panel and an upper panel in which an upper frame and a reinforcing frame protruding outward by the same length from both end surfaces of a flat body made of aluminum are welded and fixed to the rear surface of the flat body, and the lower end of the upper panel in a straight line A lower frame fixed by welding and fixed by welding to a bottom surface of a flat plate body having the same width as the upper panel, a lower panel in which a reinforcing frame protrudes to the outside, and the upper and lower panels having the same thickness as the flat body of the upper and lower panels ribs of the same length as the protrusion length of the frame are integrally extended and formed

It is configured to include side frames for reproduction having the same length as the overall length of the upper and lower panels as “shaped and “L”-shaped cross-sections, wherein both sides of the flat body of the upper and lower panels and the ribs of the side frame for reproduction An aluminum panel for construction having a changed width and length, characterized in that the contact portions where the ends of the panels are in contact with each other, the protruding upper and lower frames of the upper and lower panels, and the contact portions between the reinforcing frame and the side frame for recycling are integrally fixed by welding is provided

In this case, the upper and lower panels are formed by removing both the outer side frame portions of the general aluminum panel and some sections in the longitudinal direction of the panel. Any of the aluminum panels may be used.

In the method of the present invention, the previously manufactured aluminum panel has a changed width and length through a simple process, while maintaining the strength of the side frame portion equal to the strength of the side frame of the original panel. It has the advantage of being able to easily manufacture a panel of the required width and length with a simple process without the need for additional extrusion equipment, etc.

In addition, the present invention has already been used several times in the building construction site and is in a difficult state for repeated use or is reborn as a panel having a changed width and length using an aluminum panel that is in a stage before disposal, thereby economic loss due to the disposal of the panel. Compared to the recycling process, which involves cumbersome and uneconomical processes such as dismantling, cutting, scrapping, and melting of discarded panels, it is possible to save energy as well as reduce manufacturing costs by ensuring cost conservation and regeneration of new panels. can

1 and 2 show the overall structure of a general aluminum panel for construction, FIG. 1 is a perspective view, and FIG. 2 is a plan view.
3 to 8 are step-by-step views of a method according to an embodiment of the present invention,
3 is a plan view illustrating a process in which a lower portion of the upper panel and a portion of the upper portion of the lower panel are cut and removed;
4 is a side view and a plan view of a state in which some sections on both sides of the flat body are slightly removed from the upper and lower panels of FIG. 3;
5 is a side view and a plan view showing a process in which both side frame parts are removed by cutting at a point in the area where the flat plate part of FIG. 4 is removed;
6 is a side view and a plan view showing a state in which both side frame portions are removed through the cutting process of FIG. 5;
7 is a side view and a plan view showing a state before the upper and lower panels and the side frame for reproduction are combined;
8 (A) and (B) are a plan view and a partially cut-away perspective view of a panel having a changed width through the method of the present invention.

The technical purpose of the present invention, characteristic effects including characteristic processes and configurations will be more clearly understood by those skilled in the art through the following detailed description with reference to the drawings for the embodiments of the present invention.

First, FIGS. 1 and 2 are a perspective view and a plan view showing the overall structure of a general aluminum panel for construction as an object to which a change in width is attempted in the method of the present invention. As a wall panel for building a long wall, the side frames 200 and 200' are integrally formed in the extrusion step along both outer edges of the flat body 100, and the upper and lower portions along the longitudinal direction of the flat body 100 Each of the upper and lower frames 300 and 300', and a plurality of reinforcing frames 400 in the middle are arranged in parallel with the upper and lower frames 300 and 300' at a predetermined distance from each other to form a flat plate body. It is integrally fixed through welding at the contact part of 100 and the contact part with the side frames 200 and 200 of both ends. In the drawings, unexplained reference numeral 500 denotes a reinforcing weld, 601 denotes a connecting pin insertion hole for connection with an adjacent panel, and 603 denotes a spacer insertion groove inserted through the concrete wall to hold the inner and outer panels in close contact with the wall. am.

3 shows a process in which one panel cuts a certain section of the lower part and the other panel cuts a certain section of the upper part so as to have a specific length required when two panels are connected up and down. As the upper panel (1') to be connected up and down, a predetermined section of the lower part is cut, and the right side is the lower panel (1"), which is cut for a certain section of the upper part. At this time, the upper and lower panels The selection of the cutting section of (1')(1") is selected by cutting so that the combined length of the two panels (1')(1") matches the height of the wall required at the construction site after cutting. Preferably, for the convenience of the cutting process, the reinforcing frame 400 is avoided while avoiding the forming portion of the reinforcing frame 400, and the reinforcing frame 400 is maintained at an appropriate distance between the upper and lower panels (1') (1") cut contact parts as the center. ) is preferably located.

4 shows the process of cutting a small section by grinding or cutting both sides of the flat body 100 for the upper and lower panels 1' and 1" in which the cut is made for a certain section in the longitudinal direction of FIG. , the drawing shows the grinding removal process for the upper panel 1' as an example, but it goes without saying that the same process is performed for the lower panel 1". In the band-shaped region cut along the longitudinal direction through such a flat body cutting process, the junction of the flat body 100 and the upper and lower frames 300 and 300 ′ and the reinforcing frame 400 that were fixed by welding before cutting is cut. It is exposed as much as the width (cw).

After the cutting and removal of the small width section on both sides of the flat body is completed, as shown in FIG. 5, the upper and lower frames 300 and 300 ′ and By cutting the reinforcing frame 400, the side frame outside the cutting line cl of the cut width of the flat body and the portion coupled thereto are removed.

6 shows a state in which the process of FIG. 5 is completed, and the outer ends of the upper and lower frames 300 and 300 ′ and the reinforcing frame 400 of the cut width cw are the length of the remaining cut width rcw. It is exposed in a state that protrudes to the outside of the panel body as much as possible.

"형 및 "ㄱ"형 단면의 재생용 측면 프레임(600)(600')을 마련하게 되는데, 이때 상기 재생용 측면 프레임(600, 600')은 평판체(100)와 동일한 두께를 지니며 각기 상기 잔여 절단 폭(rcw) 및 상,하 프레임의 돌출 길이와 동일한 길이로 연장된 리브(610, 610')와 이에 수직하게 일체로 연장된 "

"형 및 "ㄱ"형 단면으로 형성된다. 상기 재생용 측면 프레임(600, 600')의 길이는 상기 상,하부 패널(1')(1")의 합해진 길이와 동일한 길이로 형성된다.Then, as in FIG. 7, "

Side frames 600 and 600 ′ for reproduction of “shaped and “L” cross-sections are provided, wherein the side frames 600 and 600 ′ for reproduction have the same thickness as the flat body 100 and are The ribs 610 and 610' extending to the same length as the remaining cut width rcw and the protrusion length of the upper and lower frames and the "

It is formed in a “shaped and a”-shaped cross section. The length of the side frames 600 and 600' for reproduction is the same as the combined length of the upper and lower panels 1' and 1".

As shown, the upper and lower frames 300 and 300 ′ and the upper and lower panels 1 ′ and 1 ″ from which the outer ends of the reinforcement frame 400 protrude are arranged vertically in a straight line in the longitudinal direction. The side frames for reproduction (600, 600') are placed on both sides of the cutouts of the upper and lower panels (1') (1") in a state where the cut-outs are in contact with each other, so that they are the side frames for reproduction (600, 600') ) of the ribs 610 and 610' are supported on the upper and lower frames and the reinforcing frame exposed at the residual cutting width (rcw), and the ends of the ribs are in contact with the entire length of the cut surfaces of the two panels. It is placed over so that contact is maintained.

Next, the cut contact portions of the upper and lower panels 1 and 1", the ribs 610 and 610' of the side frames 600 and 600' for reproduction, and the cut surfaces of the flat plate 100 By welding to the longitudinal contact between the upper and lower frames 200, 200' and the entire contact between the reinforcing frame 400 and the reinforcing side frame 600, 600' of the panel, the two The upper and lower panels (1') (1") and the side frames for reproduction on both sides are integrated to form a panel of varying width and length.

In this case, the welding may be performed to form a continuous weld joint along the contact portion, or to perform spot welding at a predetermined interval, but relatively strengthened welding may be performed in the corner portion or the like.

8 is an aluminum panel 1 for construction having a changed width after welding of the upper and lower panels 1' and 1" and the side frames 600 and 600' for recycling through the welding of FIG. 7 is completed. As a plan view and a partially cut-out perspective view showing the whole structure reborn, the joint line (bl) along the longitudinal direction of the panel and the upper and lower panels on both sides of the flat body 100 compared to the conventional general panel from the outside (1') (1") It is distinguished in that the bonding line (bl) along the width direction of the contact part is exposed.

1: Aluminum panel
1': top panel
1": lower panel
100: flat body
200, 200': side frame
300, 300': upper and lower frames
400: reinforcement frame
600, 600': side frames for play 610, 610': ribs
bl: joining line cl: cutting line
cw: cut width rcw: residual cut width

Claims (5)

It has a long rectangular shape with a length longer than the width, and is provided with side frames that are integrally extruded and perpendicular to the flat body on both sides, and are parallel to each other at intervals along the length direction with the upper and lower openings in the width direction. providing two building aluminum panels, the reinforcing frame being fixed by welding;
cutting and removing a certain section of the lower part of one panel and a certain section of the upper part of the other panel so as to have a specific length required when the two panels are vertically connected;
For each of the panels in which the lower and upper sections are cut, a small cut width section is removed from both sides of the flat body through grinding or cutting along the longitudinal direction. Step to be exposed while maintaining the shape of;
The upper and lower frames and the reinforcing frame are cut along the longitudinal direction from one point in each area of the cut width of the flat body to remove the side frames and the parts connected thereto outside the cut line of the cut width of the flat body. and exposing the outer end of the reinforcing frame to the outside of the panel body by the length of the remaining cut width;
A rib having the same thickness as the flat body and extending to the same length as the remaining cut width while integrally extending perpendicular to it

providing a side frame for reproduction having a "shaped" and "a" cross section and having a length equal to the combined length of the two panels from which the lower and upper predetermined sections are cut;
disposing the two panels in which the upper and lower frames and the outer ends of the reinforcing frame protrude to the outside of the remaining cut width of the flat body while cutting a certain section of the lower part and the upper part up and down so that the longitudinal cuts are in contact with each other;
Each of the side frames for reproduction is placed in the cutouts on both sides of the panel arranged in a straight line up and down, so that the ribs of the side frame for reproduction are in contact with and supported on the upper and lower frames and the reinforcing frame exposed to the remaining cut width. allowing the ends to remain in contact over the entire length of the cut surfaces of the two panels;
The vertical contact portion of the two panels, the longitudinal contact portion between the rib of the side frame for reproduction and the cut surface of the flat body, and the protruding upper and lower frames of the panel, and the overall contact portion between the reinforcing frame and the side frame for reproduction The two panels and the side frames for recycling are integrated with each other by welding to complete a panel with a changed width and length;
A method of changing the width and length of an aluminum panel for construction, characterized in that it comprises a. The method according to claim 1, wherein the panel provided for changing the width and length is a pre-fabricated panel that has been used before or at least once at a construction site. The method according to claim 1, wherein the panel provided for changing the width and length and the side frame for recycling are made of the same material. An upper panel in which an upper frame and a reinforcing frame protruding to the outside with the same length from both end surfaces of the flat body made of aluminum are welded and fixed to the rear surface of the flat body;
A lower panel welded and fixed to the lower end of the upper panel in a straight line and fixed by welding to a bottom surface of a flat plate having the same width as the upper panel and a lower panel in which a reinforcing frame protrudes to the outside;
The ribs of the same length as the protrusion length of the upper and lower frames are integrally extended while having the same thickness as the flat body of the upper and lower panels.

It is configured to include a side frame for reproduction of the same length as the overall length of the upper and lower panels as "shaped and "a"-shaped cross-sections,
At this time, a contact portion where both sides of the flat body of the upper and lower panels and the ends of the ribs of the side frame for regeneration come into contact with each other, the protruding upper and lower frames of the upper and lower panels, and the contact portion between the reinforcing frame and the side frame for regeneration are welded An aluminum panel for construction with a changed width and length, characterized in that it is integrally fixed by 5. The method of claim 4, wherein a joint line parallel to the longitudinal direction of the panel is formed at a portion where the end surface of the flat body and the rib are abutted and welded, and a joint line in the width direction of the contact portion between the upper and lower panels is formed. Architectural aluminum panels with altered width and length.

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