KR20220135407A - Rebar cutting device that guarantees the convenience of blade replacement - Google Patents

Abstract

A rebar cutting device ensuring convenience in blade replacement according to the present invention comprises: a cutting area in which a rebar transferred by a transfer unit is positioned; a press descending to the cutting area to press the rebar; a blade module having a cutting surface, mounted on the lower sidewall of a transfer area so that the rebar transferred to the transfer area is placed on the blade module, and cutting the rebar by the descent of the press; and a discharge path slantly perforated outwards from the cutting area. The blade module comprises: a main body including a slit which is inserted in a length direction of the central area of the cutting surface, and through which a plurality of coupling holes are penetrated at regular intervals in the length direction, and a recess which is recessed at a predetermined depth in a portion of any one of both surfaces of the cutting surface partitioned based on the slit and includes a plurality of first coupling holes penetrated from the bottom surface at regular intervals in the length direction; and a replacement block placed and coupled with the recess in a state where second coupling holes are penetrated at regular intervals in the length direction to be coupled to the first coupling holes by fasteners. The rebar cutting device ensuring convenience in blade replacement according to the present invention can conveniently and quickly supplement by replacing only actually worn parts of the blade module with the replacement block.

Description

Rebar cutting device that guarantees the convenience of blade replacement

The present invention relates to a rebar cutting device that guarantees the convenience of replacing the blade, and more particularly, it can ensure the convenient usability of the blade module by easily replacing the part in contact with the rebar in the blade module that cuts the reinforcing bar by the descent of the press. It relates to a rebar cutting device.

The cutting device (or cutting device) provides a function of cutting various cutting objects, such as steel and wood, to a desired size, and consists of various mechanical configurations according to the type and cutting method of the cutting object, and the types are various.

Among them, the rebar cutting device for cutting reinforcing bars has a relatively slim structure using the characteristics of rebars having a smaller diameter than pipes or steel materials in many cases.

This rebar cutting device may also have various structures, and as an example, it may have a structure in which the reinforcing bar is accommodated and then the reinforcing bar is pressed with a press so that the rebar is cut while falling along the cut surface of the blade mounted on the side wall.

As a prior art for a rebar cutting device, the rebar cutting device of Korean Patent No. 1277643 includes a guide part formed on a conveying part to which a reinforcing bar having a thread formed on the outer periphery is transferred to isolate and guide the reinforcing bar in the longitudinal direction; When the reinforcing bar is guided through the guide unit and protrudes by the cut length set at the end of the transfer unit, a rotation unit for pushing up the lower side of the reinforcing bar; And when the reinforcing bar is transported by a set cutting length along the guide part, a cutting unit that cuts one side of the reinforcing bar through a plurality of blades that cross each other and are raised and lowered; Since the thread formed on the outer periphery of the reinforcing bar is not damaged, it is disclosed that the quality of the reinforcing bar is improved.

On the other hand, the blade that actually cuts the reinforcing bar under the pressure of the press wears out due to frequent friction and pressure with the reinforcing bar and needs to be replaced periodically. In fact, the area in contact with the reinforcing bar is concentrated in the upper part around the press, so it is cumbersome to replace the entire blade even when the lower part below it is not worn out.

However, the above-described prior art does not provide a solution for improving the convenience or efficiency of blade replacement as focusing on improving the quality of the reinforcing bar.

Accordingly, there is a need to develop a rebar cutting device equipped with a new and advanced blade module that can conveniently replace only a portion of the blade, that is, a portion that is substantially worn out.

The present invention has been devised to overcome the problems of the above technology, and a replacement block substantially in contact with reinforcing bars or a press by forming a recessed groove in a part of the blade module and having a replacement block mounted in the recessed groove through a fastener. Its main object is to provide a rebar cutting device with an improved structure of a blade module that can be replaced conveniently.

Another object of the present invention is to manufacture the replacement block of carbon alloy steel.

Another object of the present invention is to prevent binding of the replacement block by mounting a buffer pad between the recessed groove of the main body and the replacement block in the blade module.

A further object of the present invention is to improve the durability of the replacement block by coating the surface of the replacement block with a coating layer having a special composition.

In order to achieve the above object, the rebar cutting device guaranteeing the convenience of replacing the blade according to the present invention includes a cutting area in which the reinforcing bar transferred by a conveying unit is located, and a press that descends to the cutting area to press the reinforcing bar; , a blade module that is mounted on the lower side wall of the conveying area in a state with a cutting surface and cuts the reinforcing bar by the descent of the press as a rebar transferred to the conveying area is seated, and the cutting area obliquely penetrates to the outside In the rebar cutting device including a discharge path, the blade module is recessed along the longitudinal direction of the central region of the cut surface, and a slit through which a plurality of fastening holes are penetrated at regular intervals along the longitudinal direction, and the slit is based on a main body including a recessed groove through which a plurality of first coupling holes are penetrated at a predetermined distance along the longitudinal direction from the bottom to be recessed to a predetermined depth in a partial region of any one of the two sides of the cut surface partitioned by; and a replacement block seated and coupled to the recessed groove in a state in which the second coupling hole is penetrated at a predetermined interval along the longitudinal direction so as to be coupled to the first coupling hole via a fastener.

In addition, the replacement block, characterized in that made of carbon alloy steel.

In addition, a buffer pad made of any one of an elastic body made of an elastic material, polyurethane, thermoplastic polyurethane (TPU), and PVC is laminated between the recessed groove and the replacement block.

According to the rebar cutting device that guarantees the convenience of replacing the blade according to the present invention,

1) It provides the advantage of conveniently and quickly supplementing only the part where wear occurs in the blade module conveniently and quickly by replacing the replacement block,

2) By installing a buffer pad between the recessed groove and the replacement block, the replacement block is prevented from binding to the main body.

3) By treating the material of the replacement block and the body with the same or different materials, the rigidity of the replacement block can be differentially adjusted to reduce the manufacturing cost,

4) The coating layer formed on the surface of the replacement block guarantees the durability of the replacement block as well as provides a repulsive force to the reinforcing bar to prevent the replacement block from being easily damaged.

1 is a perspective view showing a schematic appearance of the rebar cutting device of the present invention.
Figure 2 is a perspective view showing the blade module and the discharge path in the cutting area.
Figure 3 is a perspective view showing a state in which the reinforcing bar transferred to the cutting area is seated on the blade module.
Figure 4 is a perspective view showing a state in which the reinforcing bar is cut by the blade module by the descent of the press in Figure 3;
Figure 5 is a perspective view showing a state in which the reinforcing bar cut in Figure 3 is located on the blade module.
Figure 6 is a perspective view showing a schematic appearance of the blade module of the present invention.
Figure 7 is an exploded view of the detailed configuration of the blade module of Figure 6;
Fig. 8 is a cross-sectional view showing the structure of a buffer pad stacked between a recessed groove and a replacement block;
9 is a flowchart illustrating a process for preparing an enhancer included in the coating agent of the coating layer formed on the surface of the replacement block.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings are not drawn to scale, and like reference numbers in each figure refer to like components.

Figure 1 is a perspective view showing a schematic appearance of the rebar cutting device of the present invention, Figure 2 is a perspective view showing the blade module and the discharge path in the cutting area.

As can be seen from FIGS. 1 and 2 , the rebar cutting device 10 of the present invention is basically a cutting area 20 and a press 30 and a blade module 100 and a discharge path 40 in a state made in the form of a housing. ) is included.

In the rebar cutting device 10 of the present invention, it is possible to transport the rebar to the inside of the rebar cutting device 10 , that is, to the cutting area 20 by a separate transfer unit 1 .

The transfer unit 1 is capable of transferring the rebar located at a certain distance away from the rebar cutting device 10, including the conveyor belt and the rollers, into the rebar cutting device 10 and the inside thereof. As can be seen, it is also possible to provide a separate seating/storage space where the rebar can be placed in a standby state before being seated on the conveyor belt.

This transfer unit 10 may be made of various mechanical means for transferring the reinforcing bar to the rebar cutting device 10, and since the detailed configuration of the known transfer unit is the same or similar, a separate description of this detailed configuration will be omitted.

Inside the rebar cutting device 10, the cutting area 20, which can be called a kind of space in which the reinforcing bar transferred through the transfer port 11 is located, is secured.

The cutting area 20 means an internal work space of the rebar cutting device 10, and a press 30 is mounted on the upper part of the cutting area 20 based on the cutting area 20, and the lower part of the cutting area 20 is a braid. A module 100 and a discharge path 40 are mounted.

The press 30 moves up and down by driving the motor, and in particular, presses the reinforcing bars during the down motion so that the reinforcing bars seated on the blade module 100 fall along the cutting surface of the blade module 100 and cut while falling. carry out This press 30 will also have the same mechanical configuration of a known press, and of course, known driving means such as a power supply and a motor are mounted for driving the press 30 .

The blade module 100 is positioned below the cutting area 20 to support the reinforcing bars transferred to the cutting area 20 , and serves to deliver the reinforcing bars by the downward movement of the press 30 described above. The blade module 100 is formed on the side wall of the space between the cutting area 20 and the discharge path 40, and forms a part of the side wall and can be mounted on the side wall so as to be replaced.

In the present invention, the face facing the cutting area 20 in the braid module 100 is referred to as a 'cut face' 101, and this cut face 101 serves as a substantial blade, that is, a blade.

This blade module 100 is made of a rigid material for cutting reinforcing bars by the descent of the press 30, for example, the blade module 100 is carbon alloy steel, high manganese steel, stainless steel, tool steel, alloy cast steel, and It is possible to be made of any one of alloy cast iron.

The discharge path 40 means a path for discharging to the outside by hitting the reinforcing bar seated on the blade module 100 after cutting or the remaining reinforcing bar remaining after cutting by hand or by a separate mechanical means. The discharge path 40 is extended downwardly inclined, so that it can have a base for discharging the reinforcing bars conveniently.

The rebar cutting process of the rebar cutting device 10 according to this configuration will be described with reference to FIGS. 3 to 5 as follows.

Figure 3 is a perspective view showing a state in which the reinforcing bar transferred to the cutting area is seated on the blade module, Figure 4 is a perspective view showing the state in which the reinforcing bar is cut by the blade module by the descent of the press in Figure 3, Figure 5 is 3 is a perspective view showing a state in which the cut reinforcing bars are located on the blade module.

The reinforcing bar transferred to the cutting area 20 by the conveying unit 1 takes a state seated on the upper surface of the blade module 100 in the cutting area 20 . At this time, the reinforcing bar extends from the transfer port 11 to the upper surface of the blade module 100 through the cutting area 20 as can be seen from FIG. 3 .

At this time, the press 30 descends to cut the reinforcing bar, and the press 30 descends while having a width corresponding to the width of the space between the transfer port 11 and the blade module 100, that is, the cutting area 20. work out.

When the press 30 falls along the cutting region 20, the reinforcing bar is pushed to the lower side of the cutting region 20 by the pressure of the press 30 at the boundary between the cutting region 20 and the blade module 100, at this time As a result, the reinforcing bar is cut along the cut surface 101 of the blade module 100 and falls.

In this process, the cut reinforcing bar (short reinforcing bar) is positioned on the blade module 100 by the inertial force against the press 40 that performs a relatively fast descending motion, and the remaining reinforcing bars (long reinforcing bars) are the blade module 100 ), it is possible to recover by the operator through the same space as the discharge path 40 or the transfer port 11 while leaning downward along the cut surface 101 of the .

Figure 6 is a perspective view showing the schematic appearance of the blade module of the present invention, Figure 7 is an exploded view in which the detailed configuration of the blade module of Figure 6 is disassembled.

As can be seen from FIGS. 6 and 7 , the blade module 100 of the present invention is made of a schematically six-sided plate-shaped body, that is, the area of the cut surface 101 is larger than the area of the side surface, and the cut surface 101 ) may be attached to the lower sidewall of the cutout area 20 with exposure toward the cutout area 20 or otherwise form the lower sidewall of the cutout area 20 itself.

Specifically, the blade module 100 is a body 110 including a slit 111 and a recessed groove 113, and a replacement block 120 that is stacked and seated so as to be replaceable in the recessed groove 113 of the body 110. consist of.

First, the main body 110 includes a slit 111 and a recessed groove 113 as mentioned above as meaning a parent body before the replacement block 120 to be described later is mounted.

The slit 111 refers to a groove recessed along the longitudinal direction of the central region of the cut surface (the upper surface in FIG. 6 ), and the bottom surface of the slit 111 (the bottom surface of the recessed portion) has a certain length along the longitudinal direction. A plurality of fastening holes 112 are formed therethrough at intervals.

This fastening hole 112 is a space where fasteners such as bolts are fastened to mount the blade module 100 to the lower sidewall of the cutting region 20, that is, the blade module 100 is a slit 111. It may be detachably mounted on the lower sidewall of the cut region 20 by coupling and releasing the fasteners coupled to the .

The known blade module has cut surfaces of the same height formed on both sides of the slit as a center, and the blade module 100 of the present invention has any one of the two surfaces of the cut surface partitioned based on the slit 111 . A recessed groove 113 recessed to a predetermined depth is formed in the entire area or a partial area of the surface.

Referring to FIG. 7 , it can be seen that the recessed groove 113 is formed in the area from the slit 111 away from the slit 111 to the periphery of the recessed groove 113 rather than the entire surface of the cut surface 101 .

Like the slit 111 , a plurality of first coupling holes 114 are penetrated at regular intervals along the longitudinal direction of the depression groove 113 on the bottom surface of the depression groove 113 .

The replacement block 120 is mounted on the recessed groove 113 to have the same height as the cut surface 101 on which the recessed groove 113 is not formed. That is, the depression depth of the depression groove 113 and the height of the replacement block 120 are made to be the same.

The replacement block 120 is also coupled to the first coupling hole 114 of the recessed groove 113 through the fastener at regular intervals along the longitudinal direction of the replacement block 120 so that the second coupling hole 121 passes through. The replacement block 120 can be mounted on the main body 110 of the blade module 100 while the fasteners are fastened to the first and second coupling holes 114 and 121 .

At this time, the 'length direction' described above can be understood as a direction in which the slit 111 , the recessed groove 113 , and the replacement block 120 are all in the same direction, that is, along the long side of the blade module 100 .

According to this structure, the replacement block 120 can be coupled and separated from the body 110 by the coupling and release of the fastener, the replacement block 120 preferentially contacts the reinforcing bar, that is, the blade module ( It is preferable to be positioned above the cut surface 101, which can be said to be a portion where abrasion occurs relatively easily due to contact with the reinforcing bar in the cut surface 101 of 100).

In the known blade module, the portion where wear occurs substantially is a portion directly below the cutting area 20, that is, a portion (upper portion) in contact with the reinforcing bar when the reinforcing bar is located in the cutting area 20, the slit 111 When replacing the fastener while releasing the fastener, there is inefficiency in replacing the opposite side (lower part) with relatively no wear. Replacing the entire blade module itself was not too cumbersome.

In contrast, in the blade module 100 of the present invention, since the replacement module 120 is detachably disposed in the concentrated area where the wear occurs, that is, the wear part can be replaced relatively easily as well as the blade module. (100) It provides a characteristic that guarantees the efficiency of replacing only the worn part without replacing the whole.

Furthermore, it is possible that the aforementioned replacement block 120 is made of carbon alloy steel.

At this time, the body 110 may also be made of carbon alloy steel like the replacement block 120 , or may be made of a conventional metal material having a lower rigidity (or hardness) than this or a low purchase cost.

Fig. 8 is a cross-sectional view showing the structure of a buffer pad stacked between a recessed groove and a replacement block;

When the replacement block 120 is attached to the first and second coupling holes 114 and 121 through the fastener in the recessed groove 113 as a medium, it is attached stronger than expected, or it is unnecessary to the body 110 due to frequent friction and pressure with the reinforcing bar. The replacement block 120 may be bound, and in this case, there is a problem in the probability that a crack may be generated or damaged from the coupling portion of the recessed groove 113 or the replacement block 120 .

Therefore, in order to prevent this problem, as can be seen from FIG. 8 , a buffer pad 130 made of an elastic material may be laminated between the recessed groove 113 and the replacement block 120 .

This buffer pad 130 is buffered by reflecting the thickness of the buffer pad 130 when the replacement block 120 is initially manufactured so that it does not change from the height of the original cut surface 101 even when the replacement block 120 is finally mounted on this surface. It may be manufactured to have a height as low as the thickness of the pad 130 .

As mentioned above, the buffer pad 130 is made of a shock-absorbing material or an elastic material, it is possible to absorb some of the shock applied to the replacement block (120). For example, the elastic body, which is an elastic material, may be made of rubber, silicone, or the like, and in addition, may be made of engineering plastic.

Engineering plastics may be made of at least one of polyurethane, thermoplastic polyurethane (TPU), and PVC, which provide shock absorption and anti-break functions, and are actually widely used in various industrial fields or household goods fields.

At this time, polyurethane is a generic term for high molecular compounds bonded by urethane bonds, and includes spandex made of synthetic fibers and urethane-based synthetic rubber, and has high transparency, abrasion resistance, and viscoelastic properties. can be improved

As a result, it is possible to smoothly absorb the shock applied to the replacement block 120 in a state in which the replacement block 120 is coupled to the recessed groove 113 , as well as the phenomenon in which the replacement block 120 is coupled to the body 110 . It is possible that the process of coupling or separating the replacement block 120 to the recessed groove 113 of the main body 110 by blocking it is made more smoothly and safely.

Additionally, it is possible to form the coating layer 140 by applying a coating agent containing methyl methacrylate to the surface of the buffer pad 130 (that is, the surface in contact with the bottom surface of the replacement block) and then curing it. .

Here, methyl methacrylate is a colorless/transparent liquid organic compound that easily causes polymerization and can be used as a raw material for polyester resin. Since this methyl methacrylate easily polymerizes by light, heat, radiation, peroxide, etc., it can be conveniently applied as a main material for forming the coating layer 20 .

According to the coating agent containing methyl methacrylate, it is possible to prevent the external force acting surface of the buffer pad 130 made of an elastic material from being easily pressed or compressed, that is, the durability and elasticity of the buffer pad 130 . can promote

Furthermore, after the coating agent containing methyl methacrylate is applied, the cured coating layer 140 may be applied to the surface of the replacement block 120 as well. As such, the state including methyl methacrylate The coating layer 140 formed on the surface of the replacement block 120 in , of course, does not provide perfect elasticity that can be repulsed by friction and pressure with the reinforcing bar. While providing, the reinforcing bar may serve to prevent the penetration of the replacement block 120 toward the inside.

The coating layer 140 is preferably coated on the surface of the replacement block 120 periodically while the rebar cutting operation is performed through the rebar cutting device 10 of the present invention.

Additionally, the coating agent of the coating layer 140 formed on the replacement block 120 may additionally include an enhancer including an ethylene vinyl acetate copolymer (EVA).

Ethylene vinyl acetate copolymer (EVA) is a thermoplastic material and is used as a main raw material of a hot melt adhesive, and while providing weak viscosity to the surface of the replacement block 120, the reinforcing bar penetrates into the replacement block 120. It serves to improve the provision of repulsive force against force.

In addition, the ethylene vinyl acetate copolymer (EVA) not only improves the durability of the coating layer 140 itself, but also improves the stability of the coating layer 140 itself, thereby preventing the coating layer 140 from easily falling off from the replacement block. It can also have functions.

Such an enhancer is preferably included in a ratio of 5 to 15 parts by weight relative to the total weight of the coating layer 140. When included below this ratio, the above-described improvement function cannot be exhibited, and when it is higher than this, the viscosity of the coating layer 140 itself is unnecessary. It is because there is a growing problem.

9 is a flowchart illustrating a process for preparing an enhancer included in the coating agent of the coating layer formed on the surface of the replacement block.

As can be seen from FIG. 9 as a further embodiment, the above-described enhancer may be manufactured through the first mixture preparation step (S210), the secondary mixture preparation step (S220), and the enhancer completion step (S230).

First, in the primary mixture preparation step (S210), 75 to 90 parts by weight of an ethylene vinyl acetate copolymer (EVA), 10 to 25 parts by weight of a polyvinyl acetate emulsion, and 15 to 30 parts by weight of the first mixture are added to the total weight of the primary mixture. As a process of preparing a first mixture by stirring for 35 minutes, through this step, the ethylene vinyl acetate copolymer and the polyvinyl acetate emulsion form a homogeneous mixture to prepare a first mixture.

At this time, in order to increase the convenience and mixability of the first mixture, ethylene vinyl acetate copolymer (EVA) is first put into the reactor before the preparation of the first mixture, and a pretreatment process of stirring at 20 to 40° C. for 10 to 30 minutes is performed. may be

As mentioned above, the ethylene vinyl acetate copolymer (EVA) provides a weak viscosity to the coating layer 140 while providing a role of supplementing the durability of the coating layer 140, and polyvinyl acetate has a softening point of 97 to 105° C. and a softening point of 238 As a result of having a softening point lower than that of the thermoplastic polyester resin-based methyl methacrylate, which is to 240 ° C., the softening point of the coating layer 140 is lowered. can provide

Next, the secondary mixture preparation step (S220) is performed by adding 60 to 80 parts by weight of the primary mixture, 20 to 40 parts by weight of the acrylic emulsion resin, and stirring at 20 to 50° C. for 30 to 50 minutes, based on the weight of the total secondary mixture. This is the process of preparing the secondary mixture.

In this step, the acrylic emulsion resin is at least one of normal butyl methacrylate, isobutyl methacrylate, lauryl methacrylate, stearyl methacrylate, and beta-hydroxybutyl methacrylate, at a temperature of 30 to 40 ° C. It will be more preferable to mix for 30 to 40 minutes in an amount of 25 to 35 parts by weight relative to the total secondary mixture within the range.

Through the addition of the acrylic emulsion resin, the low mechanical strength of the ethylene-vinyl acetate copolymer and polyvinyl acetate is supplemented, and as a result, the function of improving the mechanical strength of the coating layer 140 is provided.

Finally, the enhancer completion step (S230) is performed by adding 80 to 95 parts by weight of the secondary mixture, 5 to 20 parts by weight of polytetrafluoroethylene, and stirring at 30 to 50° C. for 30 to 200 minutes based on the total weight of the enhancer. It is the process of completing the enhancer.

Here, polytetrafluoroethylene (polytetrafluoroethylene) is an ethylene-based resin having water and oil repellency, and provides strength improvement and heat resistance, water repellency, and oil repellency properties.

In summary, the enhancer prepared by this process provides properties of improving adhesion, physical strength, and heat resistance of the coating layer 140 .

Furthermore, in the above-described enhancer completion step (S230), it is possible to complete the enhancer by additionally including colloidal silica.

Specifically, based on the total weight of the enhancer, 80 to 90 parts by weight of the secondary mixture, 5 to 15 parts by weight of the polytetrafluoroethylene, and 1 to 15 parts by weight of the colloidal silicic acid are added and 30 to 50 parts by weight at 30 to 50 ° C. The enhancer can be completed by stirring for 200 minutes.

Here, colloidal silicic acid generally refers to silicon dioxide present in water as a hydrate, and is distributed in the enhancer to help the coating layer 140 to have a dense structure, through which the coating layer 140 has abrasion resistance and mechanical properties. It provides properties that can maximize physical properties.

As described so far, the configuration and action of the rebar cutting device that guarantees the convenience of replacement of the blade according to the present invention is expressed in the above description and drawings, but this is only an example, and the spirit of the present invention is reflected in the above description and drawings is not limited thereto, and various changes and modifications are possible without departing from the technical spirit of the present invention.

1: transfer unit 10: rebar cutting device
11: Conveyor 20: Cutting area
30: press 40: exhaust furnace
100: blade module 101: cut surface
110: body 111: slit
112: fastener 113: recessed groove
114: first coupling hole 120: replacement block
121: second coupling hole 130: buffer pad
140: coating layer

Claims (8)

As a rebar cutting device that guarantees the convenience of blade replacement,
A cutting area in which the reinforcing bar transferred by the conveying unit is located, a press descending to the cutting area to press the reinforcing bar, and a cut surface are mounted on the lower sidewall of the conveying area and the reinforcing bar transferred to the conveying area In the reinforcing bar cutting device comprising a blade module for cutting the reinforcing bar by the descent of the press as being seated, and a discharge path obliquely penetrating to the outside in the cutting area,
The blade module,
A slit recessed along the longitudinal direction of the central region of the cut surface and through which a plurality of fastening holes are penetrated at regular intervals along the longitudinal direction, and a part of any one of both sides of the cut surface partitioned based on the slit a main body including a recessed groove through which a plurality of first coupling holes are penetrated at regular intervals along the longitudinal direction from the bottom surface to be recessed to a predetermined depth in the region;
Reinforcing bar cutting device comprising a; replacement block seated and coupled to the recessed groove in a state in which the second coupling hole is penetrated at a predetermined interval along the longitudinal direction so as to be coupled to the first coupling hole via a fastener . The method of claim 1,
The replacement block is
Rebar cutting device, characterized in that made of carbon alloy steel. The method of claim 1,
Between the recessed groove and the replacement block,
Rebar cutting device, characterized in that a buffer pad made of any one of an elastic body made of an elastic material, polyurethane, thermoplastic polyurethane (TPU), and PVC is laminated. 4. The method of claim 3,
On the surface of the buffer pad,
Reinforcement cutting device, characterized in that the coating layer is formed by curing after the coating agent containing methyl methacrylate is applied. The method of claim 1,
On the surface of the replacement block,
Reinforcement cutting device, characterized in that the coating layer is formed by curing after the coating agent containing methyl methacrylate is applied. 6. The method of claim 5,
The coating agent,
Reinforcement cutting device, characterized in that it comprises 5 to 15 parts by weight of an enhancer comprising an ethylene vinyl acetate copolymer (EVA), based on the total weight of the coating layer. 7. The method of claim 6,
The enhancer is
Based on the total weight of the primary mixture, 75 to 90 parts by weight of an ethylene vinyl acetate copolymer (EVA) and 10 to 25 parts by weight of a polyvinyl acetate emulsion are added and stirred at 30 to 60° C. for 15 to 35 minutes to prepare a primary mixture to, a first mixture preparation step;
Based on the total weight of the secondary mixture, 60 to 80 parts by weight of the first mixture and 20 to 40 parts by weight of the acrylic emulsion resin are added and stirred at 20 to 50° C. for 30 to 50 minutes to prepare a secondary mixture, the secondary mixture manufacturing steps;
Completing the enhancer by adding 80 to 95 parts by weight of the secondary mixture, 5 to 20 parts by weight of polytetrafluoroethylene, and stirring at 30 to 50° C. for 30 to 200 minutes based on the total weight of the enhancer; Characterized in that manufactured, rebar cutting device. 8. The method of claim 7,
In the step of completing the enhancer,
By additionally including colloidal silica,
Based on the total weight of the enhancer, 80 to 90 parts by weight of the secondary mixture, 5 to 15 parts by weight of the polytetrafluoroethylene, and 1 to 15 parts by weight of the colloidal silicic acid are added, and for 30 to 200 minutes at 30 to 50 ° C. Characterized in that by stirring to complete the enhancer, rebar cutting device.

Images