KR102584966B1 - Metal material processing method - Google Patents

Abstract

The present invention relates to a metal material processing method, and more specifically, to the provision of a metal material processing method that allows safe processing of metal materials with various thicknesses and transport of the processed metal material by minimizing energy use. For the purpose.
The present invention includes a transfer step (S10) of transferring a metal material to the rear end using a transfer device; A cutting step (S20) of cutting the metal material using a cutting device; A supply step (S30) of supplying the cut metal material to the loading part of the bending device using a supply device; And a bending step (S40) of pressing the cut metal material placed on the loading unit toward the loading unit using a press of the bending device, wherein the loading unit includes a lower slope plate and a lower slope plate inclined downward toward the rear end. It includes a connecting member connected to the side, and an upper swash plate whose outer side is detachably connected to the connecting member and whose inner side is spaced apart from the lower swash plate.

Description

Metal material processing method {METAL MATERIAL PROCESSING METHOD}

The present invention relates to a metal material processing method, and more specifically, to the provision of a metal material processing method that allows safe processing of metal materials with various thicknesses and transport of the processed metal material by minimizing energy use. For the purpose.

Metal materials are generally manufactured into shapes such as plates, bars, and rebars through processes such as refining, continuous casting, and drawing.

Metal materials such as the above-described rebar are manufactured into semi-finished products or finished products through processing such as cutting (Patent No. 10-1619892 (see Prior Art 1 below), bending, etc.).

The bending process of metal materials such as rebar was performed using a bending device, etc., and Patent No. 10-1259003 (hereinafter referred to as Prior Art 2), which is a prior art, relates to a metal plate bending device, and more specifically, lifting and lowering by means of a lifting means. A main body with a movable lifting block installed on the upper part, a pressure roller part installed at the lower part of the lifting block and provided with a pair of pressure rollers spaced apart from each other for pressing the reinforcing bar to be bent, and a part of the main body facing the pressure roller part. A rebar bending device comprising a pair of support rollers installed at the bottom and spaced apart from each other to be positioned between the pressure rollers when the elevating block is lowered to support the rebar to be bent, on one rear side of the main body. In the front of the main body, a reinforcing bar length adjustment plate is installed so that the end of the reinforcing bar to be bent is in contact with the end of the reinforcing bar to be bent and is introduced between the support roller part and the pressure roller part, and the elevating block is installed in the main body to adjust the lead-in length of the reinforcing bar to be bent. Both sides are connected and a guide rod is installed vertically to guide the lifting block when it is moved up and down by the lifting means. A position control device is installed on one side of the lifting block, and the lifting distance of the position control device is located on the upper and lower sides of one side of the main body. A limit switch is installed to control the raising and lowering movement of the lifting block by limiting it, so that when the reinforcing bar is continuously bent to have two bending points, it can be bent through a single pressing operation.

However, prior technologies such as the above-described prior art 2 require workers to insert and remove metal materials such as reinforcing bars from the bending device. Therefore, automation is not achieved, so a skilled worker is required, and the process of inserting and removing the material from the bending device is not possible. There were problems that raised worker safety issues during the process.

The present invention was developed to solve the above problems, and its purpose is to provide an economical and more stable metal material processing method by performing a bending process without the operator directly transporting the metal material.

Another object of the present invention is to provide a metal material processing method that allows processing metal materials with various thicknesses.

The present invention, aimed at solving the above problems, has the following configuration and characteristics.

A transfer step (S10) of transferring the metal material to the rear end using a transfer device; A cutting step (S20) of cutting the metal material using a cutting device; A supply step (S30) of supplying the cut metal material to the loading part of the bending device using a supply device; And a bending step (S40) of pressing the cut metal material placed on the loading unit toward the loading unit using a press of the bending device, wherein the loading unit includes a lower slope plate and a lower slope plate inclined downward toward the rear end. It includes a connecting member connected to the side, and an upper swash plate whose outer side is detachably connected to the connecting member and whose inner side is spaced apart from the lower swash plate.

In addition, the loading unit includes a protruding protrusion upward from the rear end of the lower swash plate; a groove formed at the rear end of the lower swash plate into which a bent portion of a metal material bent by pressing in the press is inserted; And an elastic member connected to the lower swash plate, but partially covering the groove and disposed to be spaced apart from the bottom of the groove.

In addition, the supply step (S30) includes a step of seating the cut metal material on the upper part of the rotating member of the supply device where a groove is formed (S31), and a step of rotating the rotating member using the driving unit of the supply device (S32) ) may include.

The present invention having the above configuration and features has an economical and more stable effect by performing a bending process without the operator directly transporting the metal material.

Additionally, the present invention has the effect of enabling processing of metal materials with various thicknesses.

1 is a schematic flowchart illustrating a method for processing a metal material according to an embodiment of the present invention.
Figure 2 is a diagram for explaining the transfer device.
Figure 3 is a diagram for explaining a cutting device, a feeding device, and a bending device.
Figure 4 is a diagram for explaining the loading part where the cut metal material is loaded and the rotating member of the supply device.
Figure 5 is a diagram for explaining a state before the cut metal material placed in the loading unit is bent by a press.
Figure 6 is a side cross-sectional view for explaining the loading part.
Figure 7 is a diagram for explaining a metal material that is pressed and bent by a press.
Figure 8 is a diagram for explaining an additional embodiment of the present invention.

Since the present invention can be subject to various changes and can have various forms, implementation examples (or embodiments) will be described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

The terms used in this specification are merely used to describe specific implementation examples (sun, aspect, aspect) (or examples), and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as ~include~ or ~consist of~ are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

~First~, ~Second~, etc. described in this specification are only used to distinguish different components, and are not limited by the order of manufacture, and the names are used in the detailed description and claims of the invention. may not match.

Throughout this specification, when a part is said to be “connected” to another part, this includes not only the case where it is “directly connected” but also the case where it is “indirectly connected” with another element in between. do.

1 is a schematic flowchart illustrating a method for processing a metal material according to an embodiment of the present invention. Figure 2 is a diagram for explaining the transfer device. Figure 3 is a diagram for explaining a cutting device, a feeding device, and a bending device. Figure 4 is a diagram for explaining the loading part where the cut metal material is loaded and the rotating member of the supply device. Figure 5 is a diagram for explaining a state before the cut metal material placed in the loading unit is bent by a press. Figure 6 is a side cross-sectional view for explaining the loading part. Figure 7 is a diagram for explaining a metal material that is pressed and bent by a press.

The metal material processing method according to an embodiment of the present invention is for manufacturing a metal material (M) such as a rebar into a processed product through a process such as bending. Hereinafter, for convenience of explanation, it will be referred to as 'the present method'.

Referring to Figure 1, the method includes a transfer step (S10), a cutting step (S20), a supply step (S30), and a bending step (S40).

Referring to Figure 2, the transfer step (S10) is a step of transferring the metal material (M) to the rear end using the transfer device (1).

Here, the rear end side is based on the direction of movement of the metal material (M) in this method, and the metal material (M) can be moved from the front end side to the rear end side in this method.

The above-mentioned transfer device 1 may generally include a lower roller 11 connected to the main frame and rotated, and an upper roller 12 connected to the main frame and disposed above the lower roller 11.

The above-mentioned metal material (M) can be passed between the lower roller (11) and the upper roller (12), and the lower roller (11) and upper roller (12) are rotated around the horizontal direction as the central axis, but the mutual rotation directions are The metal material (M) passing through the different parts can be transferred to the rear end.

The cutting step (S20) is a step of cutting the metal material using the cutting device (2).

The cutting device 2 includes a cutting blade disposed at a rear end of the transfer device 1 and a lifting part (eg a hydraulic cylinder) or a cutting blade connected to the cutting blade and elevating the cutting blade. It may include a motor that rotates.

The configuration of the above-described cutting device (2) has been described as an example, and is not limited to the above-mentioned configuration, and is capable of cutting the metal material (M) transported to the rear end by the above-described conveying device (1) into a predetermined size. As long as it can include various configurations.

Referring to Figures 3 and 4, the supply step (S30) is a bending device (to be described later) of the metal material (M) cut using the supply device (3) (metal material (M) after the cutting step (S20)). This is the step of supplying to the loading part 41 of 4).

To describe the supply step (S30) in more detail, it may include a step (S31) of supplying the cut metal material (M) to the upper part of the rotating member 31 of the supply device 3 in which the groove 311 is formed. there is. The step (S31) may be performed by a moving device such as a conveyor provided at a rear end of the cutting blade.

At this time, the rotating member 31 may be provided at the rear end of the moving device and placed lower.

The rotating member 31 may include a body and a head portion provided at both ends of the body and having a larger width than the body. For example, the head portion has the grooves 311 spaced at intervals along the circumferential direction of the head portion. It can be provided in large numbers.

The supply step (S30) may include rotating the rotating member 31 using the driving unit of the supply device 3.

Referring to FIG. 6, the rotating member 31 can be rotated by being connected to a motor, etc., and the metal material M inserted into the groove 311 and rotated by the rotating member 31 falls and is described later. It can be supplied to the loading part 41.

In this way, by including the supply step (S30), the method can automatically supply the metal material M to the bending device 4, which will be described later.

Referring to FIGS. 5 and 6, the bending step (S40) is performed by using the press 42 of the bending device 4 to place the cut metal material (M) placed on the loading unit 41 into the loading unit ( 41) This is the step of pressurizing the side.

To be more specific, the loading unit 41 may include a lower swash plate 411 whose front end is disposed lower than the center of the rotating member 31 and is inclined downward toward the rear end.

The lower inclined plate 411 may be connected to the frame of the bending device 4, and a plurality of cut metal materials M may be placed on the upper part of the lower inclined plate 411.

In addition, the loading part 41 may be formed at the rear end of the lower swash plate 411 and may include a groove 415 into which the bent portion of the metal material M bent by pressing in the press is inserted.

Referring to FIG. 6, the press 42 is disposed above the rear end of the lower swash plate 411 and can reciprocate along the normal direction of the lower swash plate 411.

The press 42 is connected to an elevating unit (eg, a hydraulic cylinder) connected to the frame and can move back and forth along the normal direction of the lower swash plate 411.

The above-mentioned groove portion 415 is formed by recessing in one direction of the normal direction ('A' direction based on FIG. 6) at the upper part of the lower swash plate 411, and the press 42 moves in the 'A' direction. Thus, the metal material (M) is pressed toward the bottom of the groove portion 415 to bend the metal material (M). The bent portion of the bent metal material M may be inserted into the groove portion 415 as described above.

Meanwhile, the loading unit 41 may include a connecting member 412 connected to the side of the lower inclined plate 411. The connecting member 412 may be provided on at least one of both sides with respect to the center line parallel to the inclined direction (longitudinal direction) of the lower swash plate 411.

That is, the above-mentioned connecting member 412 may be disposed on the side of the lower swash plate 411 and protrude upward from the upper part of the lower swash plate 411. The above-mentioned connecting member 412 can be detachably coupled to the lower swash plate 411 by a bolt member 414a, which will be described later.

The bending device 4 is an upper swash plate whose outer side (lateral side) is detachably connected to the connecting member 412 and whose inner side (center line side of the lower swash plate 411) is spaced apart from the lower swash plate 411. 413) may be included.

That is, as described above, the cut metal material (M) falling from the rotating member 31 in the supply step (S30) is disposed on the upper side of the lower swash plate 411 and moves to the lower side along the lower swash plate 411. It moves to the rear end and can enter between the lower slope plate 411 and the upper slope plate 413.

In this way, the bending device 4 includes the upper swash plate 413 to prevent the cut metal material M moving downward from being separated from the upper side, and the lower swash plate 411 is inclined downward toward the rear end as described above. Since it can be automatically supplied to the press 42, no operator is needed to process the metal material (M), and safety accidents that occur during the bending process can be prevented.

As described above, the upper slope plate 413 is said to be detachably coupled to the lower slope plate 411, and through this, the maintainability of the upper slope plate 413 can be improved.

More specifically, the bending device 4 (loading unit 41) may include a detachable coupling means 414 that detachably couples the lower sloping plate 411 and the upper sloping plate 413. ) may include a screw groove recessed in the lower swash plate 411 and provided with a screw thread, and a bolt member 414a that penetrates the upper swash plate 413 and the connection member 412 and is screwed with the screw groove.

At this time, the height of the above-described connecting member 412 is adjusted (using connecting members 412 with different heights or adjusting the height by overlapping a plurality of connecting members 412) to adjust the upper swash plate 413 and the lower swash plate 411. By adjusting the distance apart, the metal material (M) having various thicknesses can be allowed to pass between the lower swash plate 411 and the upper swash plate 413.

Referring to FIGS. 5 and 6 , the loading unit 41 may include a protruding protrusion 417 that protrudes upward from the rear end of the lower inclined plate 411. More specifically, it may protrude in a direction opposite to the 'A' direction among the normal directions of the lower swash plate 411.

The protruding protrusion 417 is configured to limit the movement of the cut metal material M moving downward from the lower inclined plate 411 to the rear end side (lower side) so that it is bent by the press 42. The protruding protrusion 416 may be provided on the side (outside) of the lower slope plate 411.

At this time, the loading portion 41 may include an elastic member 416 that is connected to the lower swash plate 411, but a portion (the front end side) covers the groove portion 415 and is spaced apart from the bottom of the groove portion 415. there is.

Illustratively, the elastic member 416 may be a metal plate, and the rear end may be connected to the rear end of the lower inclined plate 411 and may be curved upward and upward to cover the groove 415.

The cut metal plate (M) is moved from the lower inclined plate 411 to the rear end and lower side and is placed on the upper side of the metal plate and is caught by the protruding protrusion 417, so that the movement of the rear end is restricted, and the press 42 ) The bent portion of the bent metal sheet M may be inserted into the groove 415 (see FIG. 7).

In the process of inserting the bent part of the bent metal sheet M into the groove 415, both sides (outer, side parts) of the bent metal material M are lifted upward and are positioned above the protruding protrusion 417. arranged, and in the above process, the elastic member 416 may also be partially inserted into the groove 415. When the press 42 moves in the opposite direction of the 'A' direction, the elastic restoring force of the elastic member 416 may be affected. By lifting the bent metal sheet M upward (in the 'A' direction), the bent metal sheet M is automatically discharged from the loading unit 41.

That is, the upper swash plate 413 is shorter in length than the lower swash plate 411, its rear end is disposed closer to the front end than the groove 415, and the front end is closer to the rear end than the front end of the lower swash plate 411. It is desirable to be placed in .

Meanwhile, the loading unit 41 may include a waterproofing material (GS) and a functional additive (G) applied to the outer surface of the upper slope plate 413.

The waterproofing material (GS) is applied to the outer surface of the upper slope plate 413 and may contain 5 parts by weight of urethane (compared to 0.1 part by weight of polyurethane foam, which will be described later). The waterproofing material (GS) includes urethane and adds waterproofing to the upper swash plate 413.

Referring to Figure 8, the functional additive (G) includes a first cushioning material (G1) containing 0.1 parts by weight of polyurethane foam; An inner covering material (G2) containing 0.1 part by weight of polypropylene relative to 0.1 part by weight of the polyurethane foam and surrounding the first cushioning material (G1); An outer shell material (G3) that includes 0.1 part by weight of latex and surrounds the inner shell material (G2), is fibrous, and is mixed with the waterproofing material (GS); A second cushioning material (G4) containing 0.2 parts by weight of tetradecane and disposed between the inner shell material (G2) and the outer shell material (G3); A plurality of posts (G5) containing 0.1 part by weight of aluminum and provided on the outside of the outer shell material (G3); A plurality of coupling members (G6) containing 0.1 part by weight of styrene butadiene rubber and provided on the outside of each of the plurality of posts (G5), the width of which decreases toward the outside; An anionic polymer material (G7) containing 0.1 part by weight of p-styrenesulfonic acid (SSNa) and provided on either end of the outer shell material (G3); and a cationic material (G8) that includes 0.1 part by weight of polyethyleneimine and is provided on the other end of both ends of the outer shell material (G3).

The weight parts of the functional additives (G) such as polypropylene, latex, tetradecane, aluminum, styrene butadiene rubber, p-styrenesulfonic acid, polyethylene imine, etc. are described based on 0.1 parts by weight of the polyurethane foam.

As described above, the first cushioning material (G1) includes polyurethane foam and is disposed inside the inner shell material (G2), which will be described later. Polyurethane foam is used in various fields and is porous, so it was used as a functional additive (G) to add cushioning and sound insulation.

It is preferable that the above-mentioned polyurethane foam contains 0.1 part by weight. If it is less than 0.1 part by weight, the above-mentioned cushioning and soundproofing effects cannot be sufficiently expected, and if it exceeds 0.1 part by weight, there is a risk of the inner shell material (G2), which will be described later, bursting and leaking from the inner shell material (G2).

The inner shell material (G2) described above is disposed inside the outer shell material (G3), which will be described later, and includes 0.1 part by weight of polypropylene as described above, and surrounds the first cushioning material (G1).

If the polypropylene is less than 0.1 part by weight, it may not sufficiently surround the first cushioning material (G1), and there is a risk that the first cushioning material (G1) may be lost. If it exceeds 0.1 part by weight, the weight of the functional additive (G) may be excessive. It can be improved.

The polypropylene is manufactured in the form of a film and can be wrapped around the first cushioning material (G1) by heat fusion or the like. That is, the first cushioning material (G1) may be disposed inside the inner skin material (G2).

The outer shell material (G3) is a stretchable material containing 0.1 part by weight of latex, and may be fibrous while surrounding the inner shell material (G2) (the inner shell material (G2) and the second cushioning material (G4) described later). The outer covering material (G3) described above is mixed with the waterproofing material (GS) described above.

Since the above-mentioned outer covering material (G3) is fibrous, it can add toughness to the functional additive (G).

As will be explained in more detail in the following description, the second cushioning material (G4) is disposed between the outer shell material (G3) and the inner shell material (G2). Accordingly, the outer shell material (G3) wraps the second cushioning material (G4). If the latex is less than 0.1 part by weight, there is a risk that the second cushioning material (G4) may be lost because it cannot sufficiently surround the second cushioning material (G4), and if it exceeds 0.1 part by weight, the own weight of the functional additive (G) If it is excessively increased, the dispersibility of the functional additive (G) may be reduced.

The second cushioning material (G4) contains 0.2 parts by weight of tetradecane and is disposed between the inner shell material (G2) and the outer shell material (G3).

Tetradecane is a phase change material (PCM) with a melting point of about 4~6℃.

A phase change material is an energy storage material that can actively store and release heat without external factors in the form of latent heat without a change in temperature when the phase changes depending on the surrounding temperature.

In general, latent heat, which is heat that enters and exits without a temperature change when a phase change occurs, has a significantly higher amount of heat than sensible heat, which is heat that enters and exits with a temperature change without accompanying a phase change. This feature can be used to store high amounts of thermal energy or maintain temperature.

The second buffer (G4) described above includes, in addition to tetradecane, undecane, dodecane, tridecane, pentadecane, hexadecane, It may further include one or more of heptadecane, octadecane, nonadecane, eicosane, and triacontane. The melting point of the second buffer (G4) can be adjusted within the range of 1 to 30°C, which is room temperature.

The second cushioning material (G4) can surround the inner shell material (G2) in a solid state and can be accommodated inside the outer shell material (G3). The latex can be wrapped around the solid second cushioning material (G4) on a sheet and fixed by various known methods such as adhesive or fusion (thermal fusion) to wrap the second cushioning material (G4).

The first buffer G1 described above may contract or expand as the temperature changes. In particular, the volume of air accommodated in the pores may also contract or expand. When the above-mentioned first cushioning material (G1) is contracted, the cushioning effect for alleviating shock is reduced.

At this time, the second buffer material (G4) supplies latent heat to the first buffer material (G1), thereby suppressing heat shrinkage of the second buffer material (G4), thereby suppressing a decrease in the buffering properties of the second buffer material (G4). .

In addition, as the second cushioning material (G4) absorbs external heat, the first cushioning material (G1) expands as the temperature increases, thereby damaging the inner shell material (G2) and preventing it from being discharged to the outside.

As described above, the second buffer (G4) has a melting point of 4 to 6°C, so it can prevent the waterproofing material (GS) from falling below 0°C and prevent condensation from forming, and the waterproofing material (GS) can prevent thermal expansion or By suppressing heat shrinkage, the waterproofing material (GS) can be prevented from becoming wrinkled or cracked.

The second buffer (G4) described above is preferably disposed outside the first buffer (G1). Since the first buffer (G1) has insulation performance, the second buffer (G4) is positioned outside the first buffer (G1). ) When placed on the inside, it is difficult to expect the above-mentioned effect because heat exchange between the waterproofing material (GS) and the second buffering material (G4) is hindered.

As described above, the second buffer (G4) contains 0.2 parts by weight of tetradecane. If it is less than 0.2 parts by weight, it is difficult to expect a heat buffering effect, and if it exceeds 0.2 parts by weight, the inside of the outer shell material (G3) difficult to be placed in.

The anionic polymer material (G7) is provided on either end (left end in Figure may further include. The anionic polymer material (G7) may be a mixture of p-styrenesulfonic acid and hydrogel pre-polymer (1:19 ratio) and UV cured.

It is preferable that 0.1 parts by weight of p-styrenesulfonic acid be included. However, if less than 0.1 parts by weight is used, the negative charge is not sufficient, and if it exceeds 0.1 parts by weight, the weight of the functional additive (G) is excessively increased and dispersibility is reduced. There is a problem.

The cationic material (G8) may be provided on the other end (right end in Figure x) of the two ends of the outer shell material (G3).

Polyethyleneimine, included in the cationic material (G8), is a polymer obtained by polymerizing ethyleneimine and is known to have the highest cation density among existing materials.

Illustratively, each of the above-mentioned cationic material (G8) and anionic polymer material (G7) is piled up on a polyethylene (PE) film or latex and heat-sealed to the above-mentioned outer covering material (G3) or attached by an adhesive or the like to the outer covering material. It may be provided outside (G3).

The posts G5 include 0.1 part by weight of aluminum and are provided on the outside of the outer cover material G3. The posts G5 may have a pillar shape and may be arranged in plural numbers at predetermined intervals on the outer surface of the outer cover material G3. Aluminum is used because it is a light metal. If it exceeds 0.1 part by weight, the functional additive (G) becomes too heavy and dispersibility is reduced, and if it is less than 0.1 part by weight, the length or width is excessively reduced, which reduces durability.

Exemplarily, the inner end of the post G5 may be attached to the outside of the outer covering material G3 using a known adhesive or the like. As another example, the outer covering material G3 may have a fitting groove recessed from the outer surface to the inside, and the inner end of the post G5 may be inserted into the fitting groove.

Each of the plurality of coupling members (G6) is provided on the outer side of each of the plurality of posts (G5), and the width may decrease toward the outer side.

Here, the inner side may refer to the center side of the functional additive (G), and the outer side may refer to the radial direction side from the center side.

The waterproofing material (GS) may contain a number of units (GU) of the functional additive (G), and the above-described units (GU) are separated from neighboring units (GU) by shear force when stirring in the waterproofing material (GS), causing the waterproofing material (GU) to be separated from the waterproofing material (GS). GS), functional additives (G), and other additives can be improved in agitation.

After mixing or in the process of applying the waterproofing material (GS) to the upper slope plate 413 or after being applied to the upper slope plate 413, the neighboring units (GU) are electrostatic between the anionic polymer material (G7) and the cationic material (G8). They become closer to each other due to magnetic attraction, and the above-described coupling member (G6) of one of the neighboring units (GU) (hereinafter referred to as the first unit) includes styrene butadiene rubber (SBR), resulting in elastic deformation ( It is compressively deformed and enters between a plurality of coupling members (G6) provided on the outside of another one of the neighboring units (GU) (hereinafter referred to as the second unit).

When the binding member (G6) of the first unit passes between the binding members (G6) of the second unit, the anionic polymer material (G7) of the first unit and the cationic material (G8) of the second unit are electrostatically charged. They may be attached to each other by attraction, and the coupling member (G6) of the first unit may be elastically restored to its original shape with a width that decreases toward the outside.

At this time, the inner end of the above-mentioned first unit coupling member (G6) and the inner ends of the second unit coupling members (G6) are mutually supported and locked (locking coupling), thereby preventing the first and second units from being separated from each other. Thus, neighboring units (GU) are bonded to each other, and the electrostatic attraction of the neighboring units (GU) prevents the waterproofing material (GS) from expanding due to heat, and toughness can be added to the waterproofing material (GS).

The present invention described above with reference to the accompanying drawings can be modified and modified by those skilled in the art, and such modifications and changes should be construed as falling within the scope of the present invention.

Transfer device: 1 Lower roller: 11
Upper roller: 12 Cutting device: 2
Supply device: 3 Rotating member: 31
Home: 311 Bending device: 4
Loading part: 41 Lower slope plate: 411
Connecting member: 412 Upper slope plate: 413
Detachment coupling means: 414 Bolt member: 414a
Groove: 415 Elastic member: 416
Protruding jaw: 417 Press: 42
Metal material: M

Claims (4)

A transfer step (S10) of transferring the metal material to the rear end using a transfer device;
A cutting step (S20) of cutting the metal material using a cutting device;
A supply step (S30) of supplying the cut metal material to the loading part of the bending device using a supply device; and
A bending step (S40) of pressing the cut metal material placed on the loading unit toward the loading unit using a press of the bending device;
Including,
The loading unit includes a lower swash plate inclined downward toward the rear end, a connecting member connected to a side of the lower swash plate, and an upper swash plate whose outer side is detachably connected to the connecting member and whose inner side is spaced apart from the lower swash plate,
The loading part,
a protruding protrusion protruding upward from the rear end of the lower slope plate;
a groove formed at the rear end of the lower swash plate into which a bent portion of a metal material bent by pressing in the press is inserted; and
an elastic member connected to the lower swash plate, part of which covers the groove and is spaced apart from the bottom of the groove;
A metal material processing method further comprising: delete In claim 1,
The supply step (S30) is,
A metal material comprising the step of supplying the cut metal material to the upper part of the rotating member of the supply device in which the groove is formed (S31), and the step of rotating the rotating member using the driving unit of the supply device (S32). Material processing method. delete

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