KR100995762B1

KR100995762B1 - Reinforcing rod working device

Info

Publication number: KR100995762B1
Application number: KR1020100096448A
Authority: KR
Inventors: 나인찬
Original assignee: (주) 건우기계
Priority date: 2010-10-04
Filing date: 2010-10-04
Publication date: 2010-11-19

Abstract

PURPOSE: An end processing device for connecting reinforcing bars is provided to cleanly eliminate burrs by supplying rolled reinforcing bars to an edge cutting machine. CONSTITUTION: An end processing device for connecting reinforcing bars is composed of a carriage stand(105), a processor(110), a support unit(120), a rolling unit(140), a clamp(160), an edge cutting unit(180), and a form rolling unit(200). The carriage stand comprises rollers(104). The rollers have mounting grooves(103). Reinforcing bars are placed in the mounting grooves. The support unit supports the reinforcing bars. The rolling unit presses the ends of the reinforcing bars and reduces the diameter of the reinforcing bars.

Description

End treatment device for rebar connection {REINFORCING ROD WORKING DEVICE}

The present invention relates to an end treatment apparatus for reinforcing bar connection, and more particularly, to easily process the end of reinforcing bar to be connected to fit the length of a structure by connecting short reinforcing bars in a civil or building construction process. The present invention relates to an improved end treatment apparatus for connecting reinforcing bars.

When constructing civil engineering or building structure, it is completed by reinforcing reinforcing bar inside to increase the strength of the structure and filling it with concrete and curing it. Reinforcing bar is longer than the length of the reinforcing bar because it is supplied only in predetermined length. When constructing the reinforcing bar is connected to the bar.

In order to connect the reinforcing bar as the length of the bar as described above, the pressing operation to reduce the diameter by pressing the release protrusion to the end of the reinforcing bar, and to remove the burr of the end surface of the crimped reinforcing bar Chamfering and rolling work to form a screw to be coupled to the reinforcing bar adjacent to the end surface of the rebar.

Conventionally, such an end treatment apparatus for connecting reinforcing bars has been developed and used to be installed at a site for constructing a structure, or to process the end of the reinforcing bar at a factory far from the site for constructing a structure and supply it to the site.

Looking at the technical configuration of the end treatment device 1 for reinforcing bar connection to which the prior art is applied as follows.

The rolling mill 2, the chamfering machine 3, and the hydraulic rolling mill 4 are installed in parallel, and each side of the rolling mill 2, the chamfering machine 3, and the hydraulic rolling mill 4 is processed. It is configured by installing a reinforcing bar 5 for supplying the reinforcing bar.

End treatment device for reinforcing bar connection to which the prior art as described above is applied, the operator located in the rolling mill is supplied with the reinforcing bars to supply the reinforcing bars to the rolling mill to reduce the diameter while flattening the release protrusion formed on the end of the reinforcing bars After performing the rolled rebar is discharged.

Then, the worker located in the chamfering machine takes over the rolled steel reinforcement and supplies it to the chamfering machine to clean the burrs at the ends, and the chamfering work is completed, and the rebar is passed in the direction of the hydraulic rolling mill.

The chamfered reinforcing bar is provided by the worker to supply the end of the reinforcing bar to the hydraulic rolling mill to form a screw on the end of the rolled and chamfered reinforcing bar to complete the preparation work for connecting the rebar.

The prior art end treatment apparatus for connecting the rebar as described above requires a lot of installation space in addition to a dedicated equipment such as a rolling mill, a chamfering machine, and a hydraulic rolling mill in order to process the end of the rebar, the initial investment is excessive. .

As the semi-automated system required by the operator in each step must be performed in each step of the reinforcing bar to be connected, the processing can not be done quickly and the overall productivity is lowered as well as the cost of raising the production cost. Becomes

Even in the course of performing work, there is no risk of safety accidents due to backlog or takeover of rebars when workers placed in each work machine have to be co-ordinated, but delayed work due to input of inexperienced workers. Overloading frequently occurs and there is a lot of safety accidents in the process of handling heavy rebar.

Since it is not a complete automation, it is impossible to maintain a uniform state because the quality varies depending on the skill and condition of the worker in the process of processing the rebar end, which causes a problem that a defect occurs when the actual reinforcing bar is connected.

In addition, since heavy rebars are supplied and discharged for a long time, a number of problems occur, such as an increase in worker fatigue and an occupational disease-induced frequency, such as causing abnormalities in the musculoskeletal system.

Therefore, the present invention is to solve the problems described above to receive the power of the drive means to facilitate the supply and discharge of the reinforcing bar to be treated, the settlement groove which can be placed in the reinforcement while forward and reverse rotation It has a feeder including a roller and a processor for rolling, chamfering, and rolling the end of the reinforcing bar provided and provided on one side of the feeder, the processor is supplied by installing at the side and the intermediate position of the frame Supporting means for stably supporting the reinforcing bar, and rolling means for compressing the end of the supplied reinforcing bar is provided in the rear of the support to remove the release projections, and at the same time to reduce the diameter, chamfered or rolled to the rear of the rolling means Clamp for preventing the movement of the reinforcing bar supplied for the purpose, and the reinforcing bar is installed behind the clamp Including the chamfering means for chamfering the end of the chamfering means, and the rolling means is formed on the side of the chamfering means to form a screw on the chamfered rebar, one worker can perform three operations in sequence to enable efficient work At the same time, it is possible to achieve the goal of drastically reducing facility investment and installation costs.

The present invention can reduce the investment cost by minimizing the installation space and work force by performing rolling work, chamfering work and rolling work in a single device in preparation for connecting the reinforcing bar, and through the efficient work of the rebar It is an invention having various effects, such as increasing the speed of end treatment and maintaining a uniform quality so as to improve rebar connection work in the future, as well as maintaining a pleasant working environment by eliminating the concern of safety accidents.

1 is a configuration of the entire plan view showing the end treatment device for reinforcing bar connection to which the technique of the present invention is applied.
Figure 2 is a plan view taken from the processing unit of the end processing apparatus for connecting reinforcing bar to which the technique of the present invention is applied.
Figure 3 is a front configuration diagram extracting the processing unit of the end treatment apparatus for connecting reinforcing bar technology applied to the present invention.
Figure 4 is a schematic view of the support for supporting the reinforcing bar is supplied to the end treatment device for connecting reinforcing bar technology applied to the present invention.
Figure 5 is a front sectional view showing the rolling means of the end treatment apparatus for connecting reinforcing bar to which the technique of the present invention is applied.
Figure 6 is a cross-sectional view showing a rolling means of the end treatment apparatus for connecting reinforcing bar to which the technique of the present invention is applied.
Figure 7 is a cross-sectional view taken along line A-A showing a clamp for holding the reinforcing bar supplied to the end treatment apparatus for connecting reinforcing bar to which the technique of the present invention is applied.
Figure 8 is a cross-sectional view taken along line B-B showing a clamp for holding the reinforcing bar supplied to the end processing apparatus for connecting reinforcing bar to which the technique of the present invention is applied.
9 is a cross-sectional view taken along the line C-C showing the chamfering means of the end treatment apparatus for connecting reinforcing bar to which the technique of the present invention is applied.
Figure 10 is a cross-sectional view taken along the line D-D showing the chamfering means of the end treatment apparatus for connecting reinforcing bar to which the technique of the present invention is applied.
Figure 11 is a cross-sectional view taken along line E-E showing the rolling means of the end treatment apparatus for connecting reinforcing bar to which the technique of the present invention is applied.
Fig. 12 is a configuration view seen from the F direction showing the rolling means of the end treatment apparatus for reinforcing bar connections to which the technique of the present invention is applied.
Figure 13 is a block diagram showing an end treatment apparatus for connecting reinforcing bars to which the prior art is applied.

Hereinafter, with reference to the accompanying drawings will be described a preferred configuration and operation of the present invention for achieving the above object.

1 is a configuration diagram of the entire planar state showing the end treatment device for reinforcing bar connection to which the technique of the present invention is applied, Figure 2 is a plan view showing an extract of the processing unit of the end processing device for reinforcing bar connection to the technique of the present invention, Figure 3 is a front configuration diagram extracting the processing unit of the end treatment device for reinforcing bar connection to which the technique of the present invention is applied, Figure 4 is an excerpt of the support for supporting the reinforcing bar supplied to the end processing device for reinforcing bar connection to the technique of the present invention 5 is a sectional front view showing a rolling means of the end treatment apparatus for rebar connection to which the technique of the present invention is applied, and FIG. 6 is a flat sectional view showing a rolling means of the end treatment apparatus for reinforcing connection to which the technique of the present invention is applied. 7 is a cross-sectional view taken along the line A-A showing a clamp for holding the reinforcing bar supplied to the end treatment device for reinforcing bar connection to which the technique of the present invention is applied, FIG. B-B cross-sectional view showing a clamp for holding the reinforcing bar supplied to the teeth, Fig. 9 is a C-C cross-sectional view showing the chamfering means of the end treatment device for reinforcing bar connection to the technique of the present invention, Fig. 10 D-D sectional drawing which shows the chamfering means of the end processing apparatus for rebar connection to which the technique was applied, FIG. Is described together with the configuration diagram seen from the F direction showing the rolling means of the end treatment apparatus for connecting reinforcing bar to which the technique of the present invention is applied.

End treatment apparatus 100 for reinforcing bar connection to which the technique of the present invention is applied receives the power of the driving means 102 so as to facilitate the supply and discharge of the reinforcing bar 101 to be processed, while the rebar is rotated forward and backward. Rolling the transfer stage 105 including a roller 104 having a settling groove 103 that can hold the 101 and the end of the reinforcing bar 101 is provided installed on one side of the transfer stage 105 , Consists of a processor (110) for performing chamfering and rolling work.

The processor 110 is a support 120 for stably supporting the reinforcing bar 101 is provided at the side and the intermediate position of the frame 111, and the reinforcing bar is installed in the rear of the support 120 Rolling means 140 for crimping the end of the 101 to remove the release protrusion and reducing the diameter, and movement of the reinforcing steel 101 provided at the rear of the rolling means 140 for chamfering or rolling work. Clamp 160 for preventing the chamfering, chamfering means 180 to chamfer the end of the reinforcing bar 101 supplied and installed in the rear of the clamp 160, chamfering is installed on the side of the chamfering means 180 It consists of a rolling means 200 for forming a screw in the reinforcement 101.

The support member 120 has a support body 121 that is fixed to the front end of the frame 111 by fixing means such as bolts, and has a pair of support bodies 121 in a vertical direction. Through holes 122 are formed.

The through hole 122 is coupled to a pair of support bars 124 clamped by the control means 123 freely move up and down by a predetermined height in the upper and lower directions, and roughly at the upper end of the support bar 124. Mount the bracket 125 of the shape.

The bracket 125 is provided with a feed roller 127 having a triangular concave groove 126 formed so that the reinforcing bar 101 can be supplied while maintaining a stable state without moving in the left and right directions.

The support bar 124 between the bracket 125 and the upper surface of the support body 121 is fitted with a spring 128 to match the supply center of the reinforcing bar 101 supplied with the minimum weight of the reinforcing bar 101. When the weight of the reinforcing bar 101 is heavy, it naturally descends so that the center of funding is naturally adjusted.

The rolling means 140, after protruding the post 142 upward in the upper surface four directions of the lower base 141 is fixed to the upper surface of the frame 111, the upper base 143 is fixed to the upper end of the post 142 do.

The lower base 141 is fixed to the lower mold 145 having a rolling groove 144 recessed in a semicircular shape so as to roll the supplied reinforcement 101, the lower mold 145 is a semicircular recessed In cooperation with the upper mold 147 to be elevated with the rolling groove 146 to be able to roll the end of the reinforcement 101.

The upper mold 147 is installed on the bottom surface of the elevator 149 connected to the lifting means 148 such as an oil or pneumatic cylinder by operating the upper base 143 by hydraulic pressure or pneumatic pressure. ) Is maintained by the lower base 141 and the guide 150 to vertically lift.

One side of the lower base 141 is further provided with a stopper 151 to allow the end of the reinforcement 101 to be supplied coincide with the ends of the rolling grooves 144 and 146 of the lower and upper molds 145 and 147.

The stopper 151 is fixed to the horizontal movement means 152, such as a hydraulic cylinder, pneumatic cylinder at the end of the lower base 141, the horizontal movement means 152 by the horizontal movement means 152 rolling grooves (144, 146) Connect the horizontal mover 153 reciprocating in the () direction.

The stopper 154 protrudes and is fixed to the horizontal mover 153 in the direction of the rolling grooves 144 and 146, and the stop pin 154 is provided with a spring 155 to alleviate the impact of the reinforcement 101. In addition, the end of the reinforcement 101 and the rolling grooves (144, 146) by the restoring force of the spring 155 to match.

Of course, the height of the horizontal mover 153 having the stop pin 154 is located behind the lower and upper molds 145 and 147, and it will be obvious that the upper mold 147 has a height that will not interfere even when the upper mold 147 is lowered. It will also be apparent that the retracting stroke is in a range where the reinforcing bar 101 does not interfere with the movement of the clamp 160.

The clamp 160 integrally forms a clamp base 162 on the upper part of the supporter 161 fixed to the frame 111, and the clamp base 162 is perpendicular to the supplied reinforcing bar 101. And is configured to have a long length.

In the longitudinal direction of the clamp base 162, a bolt 163 having left and right screws respectively formed at the center thereof is installed, and the bolt 163 is fixed to one end of the clamp base 162 by a cover 164. ).

The bolt 163 is coupled to the clamp body 167 fixed to the clamp 166 having the clamp groove 165 of the concave shape in the contiguous position of the driving means 168 connected to one side of the bolt 163. The clamp 166 can be clamped while the clamp 166 is connected and detached by reverse rotation.

The clamp body 167 is held by the clamp base 161 and the guiding means 169 to hold the rolling phenomenon in the axial direction of the bolt 163.

In the present invention, the guiding means 169 illustrates a form in which the guide rim 170 protruding integrally on both sides of the clamp base 161 is clamped by the sliding bushing 171 and the guide plate 172. Bar type guides and guide bushings, such as a configuration commonly used in the horizontal movement means may be sufficient.

The chamfering means 180 is a frame (by the X-axis mover 184 composed of a guide 181, a guide block 182 and a moving means 183 operated by oil and pneumatically behind the frame 111) 111 is installed on the upper surface of the sliding plate 185 that moves in the X-axis direction (orthogonal to the supplied rebar length).

One end of the upper surface of the sliding plate 185 is composed of a guide 186, a guide block 187, a moving means 188 such as an oil-pneumatic cylinder, and a moving plate 189, which is a supply direction of the reinforcement 101. The Y-axis mover 190 is installed to move forward and backward in the axial direction.

The spindle body 193 mounted with the spindle 192 having the bite 191 for chamfering on the side of the moving plate 189 of the Y-axis mover 190 is fixed, and the spindle 192 is a moving plate. The motor 196 installed in the motor plate 195 held by the post 194 at 189 may receive power and rotate the end of the rebar 101 supplied while rotating.

Naturally, the power transmission of the motor 196 and the spindle 192 is made by various types of power transmission means 197 consisting of a pulley, a belt, a chain gear and a chain, a timing pulley and a timing belt combination.

The rolling means 200, the guide 201 and the guide block 202 and the hydraulic, pneumatic cylinder and the upper surface of the sliding plate 185 moving in a direction perpendicular to the rebar length supplied by the X-axis mover 184 and The Y-axis mover 205, which is constituted by the same moving means 203 and moves forward and backward in the Y-axis direction, which is a supply direction of the reinforcing bar 101, is provided.

The guide block 202 of the Y-axis mover 205 is equipped with a driving means 206 composed of a geared motor and a reducer, and a ring receiving power of the driving means 206 in front of the driving means 206. The conventional rolling tool 210 having the circular rolling die 209 is detachably attached to the planetary gear 208 connected to the gear 207 so as to form a screw in the supplied reinforcing bar 101.

The lifting means 148, the horizontal moving means 152, the X-axis mover 184 and the Y-axis mover 190, 205 illustrated in the description of the present invention is represented by a cylinder that is telescopically operated by hydraulic or pneumatic pressure. It would be natural to be able to incorporate conventional means of movement capable of linear movement, such as a combination of a reversible motor and a ball screw.

Referring to the operation of the reinforcing bar end processing apparatus 100 to which the technique of the present invention is applied as described above is as follows.

Reinforcing bar 101 to be processed to the end is dropped to the transport table 105 one by one in the state in which a plurality of loading table connected to the transport table 105 sequentially, the reinforcing bar 101 dropped on the transport table 105 Is supplied toward the processor 110 by the operator's operation.

The reinforcing bar 101 supplied to the processor 110 is supported in a stable state by the supporter 120, and undergoes a process in which the release protrusion and the diameter of the end are reduced by the rolling means 140, and then the supporter 120 again. And the burr at the end is removed by the chamfering means 180 and the rolling means 200 while the movement of the reinforcement 101 is prevented by the clamp 160 and the screw can be connected using a coupling. Will form.

Looking at this series of operations in more detail, the reinforcing bar 101 is supplied through the transport table 105 is supported in a stable state by the support 120 and the transport table 105 is installed on the front end of the frame 111. You lose.

That is, settled in the recessed groove 126 of the supply roller 127 installed in the bracket 125 mounted on the upper end of the support bar 124 protruding upward of the support body 121 fixed to the frame 111. As a result, the reinforcement 101 does not move to the left and right in the longitudinal direction.

In addition, since the supply center of the reinforcing bar 101 is matched to the minimum diameter of the reinforcing bar 101, when the large diameter reinforcing bar 101 is supplied, the support bar 124 on which the bracket 125 is mounted naturally moves to the reinforcing bar 101. Since it is lowered by its own weight, the centers of the reinforcing bars 101 coincide with each other.

This is because the support bar 124 is prevented from being separated by the control means 123 in the through hole 122 formed in the support body 121, the movement is freely coupled, the support body 121 and the bracket ( Since the spring 126 is provided between the 125s, shrinkage restoration can be repeated by the spring 126, and it becomes possible.

The reinforcing bar 101 via the support 120 is subjected to a rolling process by the rolling means 140. When the reinforcing bar 101 is supplied, the horizontal moving means 152 constituting the stopper 151 is provided. In operation, the horizontal mover 153 is in a state of advancing in the moving direction of the reinforcement 101, and the stop pin 154 provided in the horizontal mover 153 coincides with the moving center of the reinforcement 101.

Therefore, the reinforcing bar 101 is stopped by the stop pin 154. When the reinforcing bar 101 moves forward with excessive force, the stop pin 154 is temporarily stopped by the spring 155 interposed in the stop pin 154. Since retreat back to the original position by the restoring force of the spring 155, the reinforcing bar 101 can be stopped at the correct position.

At this time, the bottom surface of the reinforcement 101 is in a state in which the rolling groove 144 of the lower mold 145 fixed to the lower base 141 constituting the rolling means 140, and the correct position of the reinforcement 101 At the same time as the stop, the interlocking means 148 installed in the upper base 143 fixed to the upper end of the post 142 operates.

Then, the elevator 149 connected with the lifting means 148 is lowered, and the upper mold 147 fixed with the rolling groove 146 on the bottom of the elevator 149 is lowered and the lower mold 145 is lowered. Together with the release protrusion formed on the end of the reinforcement 101 to make a flat state by pressing the work to reduce the diameter to form a screw.

When the end of the reinforcing rod 101 is completely rolled and maintained roundness by one operation of the rolling means 140 as described above, it is supplied to the next operation chamfering process, otherwise repeated several times to reduce the diameter of the end In addition, the roundness can be maintained.

After the rolling operation as described above, the stopper 151 is returned to its original position and the lifting means 148 is operated to raise the elevator 149 having the upper mold 147 to move the reinforcing bar 101. It will be natural to make sure that there is no obstacle.

The reinforcing bar 101 passing through the rolling means 140 is supported by the supporter 120 installed at the rear of the rolling means 140 while being firmly clamped by the clamp 160 so as not to move.

Looking at the process of clamping by the clamp 160, when the reinforcing bar 101 enters between the open clamp body 167, the driving means 168 is operated to determine the bolt 163 forming the left and right screws. Rotate

Then, the clamp body 167 coupled with the bolt 163 is moved to the center position of the bolt 163, and at the same time the clamp formed to be recessed in the clamp 166 fixed at the junction of the clamp body 167 Since the reinforcement 101 is accommodated in the groove 165 to be interrupted in a solid state, the reinforcement 101 may be prevented from moving.

When the clamp body 167 is moved by the bolt 163 rotated by the driving means 168 as described above, the clamp base 161 and the clamp body 167 supply the reinforcement 101 by the guiding means 169. Rolling in the direction perpendicular to the direction will catch the phenomenon.

As described above, in the state where the reinforcement 101 is firmly maintained by the clamp 160, the chamfering means 180 moves in the direction of the reinforcement 101 to remove the burr at the end of the reinforcement 101 to maintain a clean surface. To make it possible.

Looking at the chamfering operation, the X-axis mover 184 is installed on the frame 111 does not move the Y-axis mover 190 is installed on the upper surface of the sliding plate 185 is operated to reinforce the moving plate 189 ( 101 in the longitudinal direction.

Then, the spindle 192 installed on the upper surface of the moving plate 189 rotates with the power of the motor 196, and the bite 191 mounted at the tip of the spindle 192 is connected to the end of the reinforcing bar 101. It will be done.

When chamfering is completed as described above, the operation of the motor 196 is stopped and the spindle 192 stops rotating, and the Y-axis mover 190 operates to retreat the moving plate 189 to be far from the end of the reinforcing bar 101. It returns to its initial position and is in the waiting state for next operation.

At the same time as the chamfering means 180 is retracted, the rolling means 200 is operated to form a screw at the end of the rolled and chamfered rebar 101.

Looking at this, the X-axis mover 184 is installed on the rear of the frame 111 is operated to move the sliding plate 185 in one direction of the frame 111 in the center direction to be installed on the upper surface of the sliding plate 185 The center of the means 200 and the center of the reinforcing bar 101 are coincident with each other.

In this state, the Y-axis mover 205 installed on the upper surface of the sliding plate 185 operates to advance the driving means 206 forward from the rear of the sliding plate 185.

The driving means 206 generates power while moving forward, so that the rolling tool 210 mounted on the front of the driving means 206 can form a screw on the outer surface of the end of the reinforcing bar 101. When complete, the Y-axis mover 205 will operate in reverse to cause the rolling tool 210 to return to its original position.

At the same time, the X-axis mover 184 is completed by returning the sliding plate 185 to the original position, and by switching to the clamp 160 or released state so that the reinforcement 101 can retreat to the carriage 105. By repeating such an operation, rolling and chamfering and rolling the end of the reinforcement 101 can be continuously performed.

In the present invention, by placing the processor 110 for performing rolling, chamfering and rolling on one side of the transfer table 105 to allow one worker to perform three operations sequentially, while enabling efficient work, It has the advantage of greatly reducing the equipment investment and installation cost.

100; End treatment device for reinforcing bar
101; rebar
105; Transport
110; Handler
120; Support
140; Rolling means
160; clamp
180; Chamfer
200; Rolling Means

Claims

Roller having a settling groove 103 for receiving the power of the drive means 102 to receive the power of the drive means 102 so as to facilitate the supply and discharge of the reinforcement 101 to settle the reinforcement 101 while rotating forward and reverse ( A carriage 105 comprising 104;
An end portion of the reinforcing bar 101 provided and installed at one side of the conveying table 105, comprising a processor 110 for performing rolling, chamfering, and rolling operations;
The processor 110 includes: a supporter 120 for stably supporting the reinforcing bar 101 supplied by being installed at a line side and an intermediate position of the frame 111;
Rolling means (140) installed at the rear of the supporter (120) to compress the end of the supplied reinforcement (101) to remove the release protrusions and reduce the diameter;
A clamp 160 installed at the rear of the rolling means 140 to prevent movement of the reinforcing bar 101 supplied for chamfering or rolling work;
Chamfering means (180) for chamfering the end of the rebar (101) supplied and installed at the rear of the clamp (160);
End processing device for reinforcing bar connection, characterized in that it comprises a rolling means (200) is formed on the side of the chamfering means 180 to form a screw in the chamfering completed rebar (101).

The method of claim 1;
The support 120, the support body 121 is fixed to the front end of the frame 111;
A through hole 122 formed in a direction perpendicular to the support body 121;
A support bar 124 which is intermittently coupled to the through-hole 122 in an up-and-down direction by the control means 123, and is coupled;
A bracket 125 mounted on the upper end of the support bar 124;
A feed roller 127 for forming and installing a concave groove 126 in the bracket 125 so that the reinforcing bar 101 can be supplied while maintaining a stable state without moving in the left and right directions;
Rebar 101 supplied by setting the supply center of the reinforcing bar 101 supplied by mounting the support bar 124 between the bracket 125 and the upper surface of the support body 121 to the minimum reinforcing bar 101. End weight device for reinforcing bar connection, characterized in that it comprises a spring (128) to be naturally lowered when the weight of the weight to be naturally adjusted to the center of the public money.

The method of claim 1;
The rolling means 140, the lower base 141 is fixed to the upper surface of the frame 111;
A post 142 fixed to the upper surface of the lower base 141 to protrude upward;
An upper base 143 fixed to an upper end of the post 142;
The lower base 141 has a lower mold 145 fixed with a rolling groove 144 to roll the supplied reinforcement 101;
An upper mold (147) for rolling the end of the reinforcing bar (101) in cooperation with the lower mold (145) while being elevated with the rolling groove (146) in the upper portion of the lower mold (145);
The upper mold 147 is installed on the bottom surface of the elevator 149 connected to the lifting means 148 installed on the upper base 143;
The elevator 149 is maintained by the lower base 141 and the guide 150 to vertically lift;
It includes a stopper 151 so that the end of the reinforcing bar 101 is provided on either side of the lower base 141 and the end of the rolling grooves (144,146) of the lower and upper molds (145,147) End treatment device for reinforcing bar connection, characterized in that.

The method of claim 1;
The clamp 160 includes a clamp base 162 integrally formed on an upper portion of the supporter 161 fixed to the frame 111;
A bolt 163 for forming and installing left and right screws respectively in the longitudinal direction of the clamp base 162;
A clamp body 167 coupled with a bolt 163 fixing a clamp 166 having a clamp groove 165 formed at a joint position thereof;
Drive means (168) connected to one side of the bolt (163) to clamp the rebar (101) supplied while the clamp (166) is connected and detached by forward and reverse rotation;
End treatment device for reinforcing bar connection characterized in that it comprises a guiding means (169) for holding the clamp body 167 and the clamp base (161) to catch the rolling phenomenon in the axial direction of the bolt (163) .

The method of claim 1;
The chamfering means 180 is composed of a guide 181, a guide block 182, a moving means 183 behind the frame 111 to move the sliding plate 185 in the X-axis direction of the frame 111 An axis mover 184;
One end of the upper surface of the sliding plate 185 is composed of a guide 186, a guide block 187, a moving unit 188, a moving plate 189, the forward and backward in the Y-axis direction, which is the supply direction of the reinforcement 101 A Y-axis mover (190) installed to install;
A spindle body 193 fixed to an upper surface of the moving plate 189;
A spindle 192 mounted to the spindle body with a bite 191 for chamfering on the spindle body 193;
End moving device for reinforcing bar connection, characterized in that the motor plate (195) which is installed on the motor plate (195) held as a post (194) to the moving plate (189) to supply power to the spindle (192).

The method of claim 1;
The rolling means 200 is composed of a guide 181, a guide block 182, a moving means 183 behind the frame 111 to move the sliding plate 185 in the X-axis direction of the frame 111 An axis mover 184;
The Y-axis mover which is composed of a guide 201, a guide block 202, and a moving means 203 on the upper surface of the sliding plate 185 to be installed forward and backward in the Y-axis direction which is a supply direction of the reinforcing bar 101 ( 205);
Drive means (206) mounted on the guide block (202) of the Y-axis mover (205);
The rolling tool 210 having a circular rolling die 209 detachable from the planetary gear 208 connected to the ring gear 207 receiving the power of the driving means 206 is mounted in front of the driving means 206. End treatment device for reinforcing bar connection, characterized in that configuration.

The method of claim 3;
The stopper 151 includes horizontal movement means 152 fixed to the end of the lower base 141;
A horizontal mover 153 connected to the horizontal mover 152 to reciprocate in the direction of the rolling grooves 144 and 146 by the horizontal mover 152;
A stop pin 154 fixed to the horizontal mover 153 to stop the reinforcing bar 101 which is supplied by protruding in the rolling groove 144 and 146 direction;
A spring 155 is provided through the stop pin 154 to mitigate the impact of contact with the end of the reinforcement 101 and to match the ends of the reinforcement 101 with the rolling grooves 144 and 146 by restoring force. End treatment device for reinforcing bar connection, characterized in that.