KR102667774B1 - Material holding device and material processing method using the same - Google Patents

Abstract

The present invention relates to a material holding device and a material processing method using the same. More specifically, it relates to a material holding device that allows easy fixation of the material to be processed and a material processing method using the same.
This invention includes a case detachably connected to the table top; An electromagnet including an upper member disposed on the upper part of the case; and a supply unit that supplies current to a wire provided on one side of the electromagnet.

Description

Material holding device and material processing method using the same {MATERIAL HOLDING DEVICE AND MATERIAL PROCESSING METHOD USING THE SAME}

The present invention relates to a material holding device and a material processing method using the same. More specifically, it relates to a material holding device that allows easy fixation of the material to be processed and a material processing method using the same.

In order to process materials such as metal plates, wires, and bars with processing devices such as MCT and cutters, a process for fixing the materials is performed.

Meanwhile, the prior art, Registered Patent No. 10-1972708 (hereinafter referred to as the prior art), relates to an angle-adjustable clamp for a machine tool vise. More specifically, it is installed on the vise of machine tools such as milling machines, lathes, and drilling machines. As the angle and position can be adjusted while the workpiece is fixed, the convenience of work is increased by eliminating the need for frequent fixation and disassembly of the workpiece. In particular, since no separate measuring device is used, uniform processing is possible regardless of skill level. As the dimensions can be guaranteed, there is a useful effect of improving processing quality.

In the above-mentioned prior art, the vise for fixing the material generally positions the workpiece between the fixed jaw and the movable jaw installed on the upper part of the main body and rotates the screw axis connected to the movable jaw so that the movable jaw moves along the main body in the direction where the fixed jaw is located. It consists of a structure that pressurizes and fixes the workpiece.

The above-mentioned moving jaw must be performed to fix or release the material from the vise by rotating the screw axis to adjust the separation distance between the moving jaw and the fixed jaw.

However, in this case, the worker had to repeatedly rotate the screw shaft, so the process of processing the material took more time.

In addition, in order to securely fix the material in the vise, the worker had to use a lot of force to rotate the screw shaft, so there was a problem such as requiring a skilled worker to fix the material.

The present invention was made to solve the above problems, and its purpose is to provide a material fixing device that can more easily fix the material to be processed and a material processing method using the same.

In addition, the purpose of the present invention is to provide a material fixing device that can shorten the processing time of the material by shortening the time for fixing the material and a material processing method using the same.

Additionally, the purpose of the present invention is to provide a material fixing device that can fix a material without a skilled worker and a material processing method using the same.

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

A case detachably connected to the table top; an electromagnet including an upper member disposed on the upper part of the case; and a supply unit that supplies current to a wire provided on one side of the electromagnet.

In addition, a coupling plate disposed on the upper part of the table and below the case, has a length greater than that of the case, and includes an insertion groove recessed from one end that determines the length to the opposite end. a nut groove recessed downward from the top of the table; A fastening bolt inserted into the nut groove while being inserted into the insertion groove and screwed with the nut groove; and a support member disposed on at least one of both sides based on the longitudinal direction of the case when viewed in plan, and detachably coupled to the table.

A material processing method using a material fixing device, comprising: placing a material on top of the electromagnet (S10); Supplying current to a wire provided on one side of the electromagnet using the supply unit (S20); and processing the material using a processing device (S30).

The present invention having the above configuration and features has the effect of more easily fixing the material to be processed.

Additionally, the present invention has the effect of shortening the processing time of the material by shortening the time for fixing the material.

Additionally, the present invention has the effect of fixing the material without a skilled worker.

1 is a diagram for explaining a material fixing device according to an embodiment of the present invention.
Figure 2 is a view of the material fixing device of Figure 1 viewed from another angle.
Figure 3 is a diagram for explaining the control unit.
Figure 4 is a schematic flowchart for explaining a material processing method according to an embodiment of the present invention.
Figure 5 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 generally 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 diagram for explaining a material fixing device according to an embodiment of the present invention. Figure 2 is a view of the material fixing device of Figure 1 viewed from another angle. Figure 3 is a diagram for explaining the control unit.

The material fixing device (H) according to an embodiment of the present invention is for easily fixing the material to be processed, and hereinafter, for convenience of explanation, it will be referred to as 'this device'.

Referring to Figures 1 and 2, this device (material fixing device (H) according to an embodiment of the present invention) includes a case (1), an electromagnet (2), and a supply unit (3).

The case (1) is detachably connected to the upper part of the table (8). More specifically, the table 8 may be provided on the floor of the material processing area.

The material may exemplarily be metal, and the table 8 is placed on the floor of the processing area.

The case 1 may have an accommodating space formed inside and an upper side opening.

As described above, the case 1 is placed on the upper part of the table 8, and the table 8 is said to be detachably connected. The method of being detachably connected to the table 8 will be described in more detail in the description below. Let me explain.

The case 1 described above can serve to protect the lower member or wires of the electromagnet 2, which will be described later, from the outside.

The electromagnet 2 includes an upper member 21 disposed on the upper part of the case 1. The electromagnet 2 is magnetized when an electric current flows, and is known to be used in various fields.

For example, the electromagnet 2 may include a lower member (not shown) that protrudes downward from the lower part of the upper member 21 and is inserted into the receiving space of the case 1.

The above-mentioned lower member (not shown) is not shown because it is obscured by the upper member 21 and the case 1.

The above-described upper member 21 has a planar area larger than the cross-sectional size of the upper opening of the case 1 and can be placed on the upper side of the case 1 to cover the upper opening and close the accommodation space.

This device may include a wire provided on one side of the electromagnet 2, and for example, the wire may be wound around the lower member in a coil shape.

The supply unit 3 supplies current to a wire provided on one side of the electromagnet 2. Exemplarily, the supply unit 3 may include a power device and a cable connected to the power device to supply power supplied from the power device to the electric wire.

When current is supplied to the electromagnet 2 through the supply part 3 with a metal material placed on the upper member 21 of the electromagnet 2, the electromagnet 2 is magnetized and the upper member 21 ) The metal placed at the top is fixed to the upper member (21). Afterwards, the material can be processed using a processing device 9, such as MCT, which will be described later.

In this way, since this device includes an electromagnet (2) and a supply unit (3), etc., and can fix the material simply by supplying current, it is a prior art method of fixing the material by rotating the screw axis to adjust the spacing between screws. Compared to , the material can be fixed simply and quickly, and it has the advantage of shortening the processing time by shortening the time required to fix the material.

Additionally, in the prior art, the operator had to exert a lot of force to rotate the screw shaft, but this device can fix the material by only supplying electric current, so it does not require a skilled operator.

Referring to FIG. 3, the device may include a control unit 4 that controls whether or not power is supplied to the power device and the strategic amount. The control unit 4 that controls the power device is well known, and a more detailed description will be omitted.

Hereinafter, a method in which the case 1 is detachably connected (coupled) to the table 8 will be described.

Referring to Figures 1 and 2, this device is placed on the upper part of the table 8 and may include a coupling plate 5 provided on the lower part (bottom) of the case 1.

The coupling plate 5 may be coupled to the lower part of the table 8 using various known methods such as bolts and brackets.

At this time, the length of the coupling plate 5 may be greater than the length of the case 1. Therefore, the end that determines the length of the coupling plate 5 may protrude from the case 1 when viewed in plan.

At this time, it may include an insertion groove recessed from one of the two ends that determine the length of the coupling plate 5 to the other end on the opposite side. In Figure 2, the insertion groove is not shown because the fastening bolt 6, which will be described later, is inserted.

Additionally, this device may include a nut groove that is recessed downward from the top of the table 8. The nut groove is also not shown in FIG. 2 due to the fastening bolt 6, which will be described later, and may be provided with threads on the side.

This device may include a fastening bolt 6 that is inserted into the nut groove while being inserted into the insertion groove and screwed into the nut groove.

The fastening bolt 6 may include a body portion provided with a thread on the outer peripheral surface so as to be screwed with the thread of the nut groove, and a head portion provided at the top of the body portion and having a form (outer diameter) larger than that of the body portion.

The body portion is inserted into the nut groove, and the width of the head portion may be larger than the width of the nut groove. The insertion groove may surround the body portion, and when viewed in plan, the radius or diameter of the insertion groove may be smaller than the radius or diameter of the head portion. Therefore, the lower part of the head part can be supported on the upper part of the coupling plate (5).

A plurality of the above-mentioned nut grooves may be provided along the longitudinal or width direction of the table 8, and the insertion groove of the coupling plate 5 is arranged so that it communicates with any one of the plurality of nut grooves when viewed in plan, , by inserting the fastening bolt (6) into the insertion groove and rotating it into the nut groove, the fastening bolt (6) is moved downward to move the coupling plate (5), where the head is connected to the case (1), toward the table (8). Pressurize and fix.

Conversely, when the fastening bolt (6) is rotated and moved upward to be removed from the nut groove, the case (1) can be moved to another position. It can be fixed later.

In this way, the case (1) of this device is detachably connected to the table (8) and the position of the electromagnet (2) that fixes the material can be moved, allowing the spacing of multiple cases (1) to be adjusted or the required number to be adjusted. There is an advantage that the table (8) can be installed as much as the electromagnet (2).

In other words, the electromagnets 2 can be placed on the table 8 according to the number and size of the materials being processed.

Additionally, since the case (1) can be separated from the table (8), there is an advantage in that it is easy to maintain and replace the case (1), electromagnet (2), table (8), etc.

This device is disposed on at least one of both sides based on the longitudinal direction of the case 1 when viewed in plan, and may include a support member 7 that is detachably coupled to the table 8.

When processing a material with a width greater than that of the upper member 21 of the case 1 and the electromagnet 2, the remaining part of the material is tilted downward and the fixing force by the electromagnet 2 is reduced or the tool is damaged during processing. This may cause the material to be tilted and machining may not be carried out precisely. At this time, the above-described support member 7 supports the lower portion of the material protruding from the upper member 21, so that the material can be easily fixed to the electromagnet 2 and can improve processing precision.

The support member 7 is illustratively formed along a vertical direction, and may have a bolt hole through which the bolt member passes. A coupling hole recessed from the top to the bottom may be formed in the table 8 to be screwed with the bolt member.

Figure 4 is a schematic flowchart for explaining a material processing method according to an embodiment of the present invention.

Hereinafter, a material processing method (hereinafter referred to as ‘this method’) according to an embodiment of the present invention will be described. This method is a method of processing materials using the above-described device, and includes the same or corresponding technical features as the above-described device, so the same reference numerals are used for the same or similar configurations as the configurations examined previously, and overlapping descriptions are used. shall be simplified or omitted.

Referring to FIG. 4, the method includes a placement step (S10), a fixing step (S20), and a processing step (S30).

The placement step (S10) is a step of placing a material on the top of the electromagnet (2).

The fixing step (S20) is a step of supplying current to a wire provided on one side of the electromagnet (2) using the supply unit (3).

In the fixing step (S20), the electromagnet 2 is magnetized and can fix the metal material with magnetic force.

The processing step (S30) is a step of processing the material using the processing device (9). By way of example, the processing device 9 may be a variety of metal processing machines such as a cutter or MCT.

Meanwhile, the device may include a waterproofing material (GS) and a functional additive (G) applied to the outer surface of the case 1.

The waterproofing material (GS) is applied to the outer surface of the case 1 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 case 1.

Urethane is commonly used as a waterproofing material, and is applied in liquid form to an object and then cured. The functional additive (G) described above can be mixed with urethane in a liquid state in the form of particles.

Referring to Figure 5, the functional additive (G) includes a first cushioning material (G1) containing 0.1 part 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, polyethyleneimine, 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 buffer (G1) and there is a risk that the first buffer (G1) may be lost. If it exceeds 0.1 part by weight, the weight of the functional additive (G) may be excessively increased. 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, and tetradecane in order to change the melting point. 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) may thermally expand or By suppressing heat shrinkage, the waterproofing material (GS) can be prevented from becoming wrinkled or cracked.

The second buffer (G4) 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 p-styrenesulfonic acid is included in an amount of 0.1 parts by weight. However, if less than 0.1 parts by weight is used, the negative charge is not sufficient, and if more than 0.1 parts by weight is used, 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 case (1), or after being applied to the case (1), the neighboring units (GU) are electrostatic attraction between the anionic polymer material (G7) and the cationic material (G8). They become closer to each other, 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), thereby causing elastic deformation (compression deformation). ) 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 attached 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.

Material fixing device: H
Case: 1 Electromagnet: 2
Upper member: 21 Supply section: 3
Cables: 31 Controls: 4
Coupling plate: 5 Fastening bolts: 6
Support members: 7 Table: 8
Processing equipment: 9

Claims (4)

A case detachably connected to the table top;
An electromagnet including an upper member disposed on the upper part of the case; and
a supply unit that supplies current to a wire provided on one side of the electromagnet;
Including,
a coupling plate disposed on the upper part of the table and below the case, having a length greater than that of the case, and including an insertion groove recessed from one end that determines the length to the opposite end;
a nut groove recessed downward from the top of the table;
A fastening bolt inserted into the nut groove while being inserted into the insertion groove and screwed with the nut groove; and
A support member disposed on at least one side of both sides based on the longitudinal direction of the case when viewed in plan, and detachably coupled to the table;
It further includes,
Includes a waterproofing material (GS) and a functional additive (G) applied to the outer surface of the case, wherein the waterproofing material (GS) is applied to the outer surface of the case,
The functional additive (G) is,
A first cushioning material (G1) containing 0.1 part 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) containing 0.1 part by weight of polyethyleneimine and provided on the other of both ends of the outer shell material (G3);
Including,
A material fixing device characterized in that the waterproofing material (GS) includes 5 parts by weight of urethane. delete delete In the material processing method using the material fixing device described in claim 1,
Placing a material on top of the electromagnet (S10);
Supplying current to a wire provided on one side of the electromagnet using the supply unit (S20); and
Processing the material using a processing device (S30);
A material processing method comprising:

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