KR20130020409A - Bending machine for reinforcing rod - Google Patents

Abstract

The present invention relates to a reinforcing bar bending device, and more particularly, the reinforcing bar used to reinforce the steel head to reinforcement to be bent through one pressing operation when bending to have two bent portions in succession It relates to a bending device.
To this end, the present invention is the lifting block which is moved up and down by the lifting means is installed main body; A pressure roller unit disposed below the lifting block and provided with a pair of pressure rollers spaced apart from each other to press the reinforcing bar; It is installed on the lower portion of the main body facing the pressure roller portion, a pair of support rollers for supporting the reinforcing bar is provided spaced apart from each other; and made, including the pressure roller when the lifting block descends And the support rollers are alternately positioned between each other.

Description

Rebar Bending Device {BENDING MACHINE FOR REINFORCING ROD}

The present invention relates to a reinforcing bar bending apparatus, and relates to a reinforcing bar bending apparatus that can be easily bent within a short time when the reinforcing steel used for the head reinforcement of the steel pipe to be continuously bent in two places.

Construction materials are frequently used in various construction sites and civil engineering sites, and these materials are mainly used for reinforcing bars, and these reinforcing bars are used for necessary elements by cutting or bending appropriate standards according to the use.

As a method for bending reinforcing bars, there are manual bending methods and a bending method using a bending device. In the case of bending steel bars due to problems such as low efficiency and safety accidents during manual operation, most of them are bending using a bending device. to be.

Rebar bending machine used in the prior art, for example, Patent Publication No. 0344128 (safety rebar bending machine, registered date: 2002.06.29) is disclosed, such a rebar bending machine is bent after inserting the reinforcing bars in the reinforcing bar of the rebar support By the operation of the switch, the bending roller is rotated along the guide groove and moved to bend the rebar.

)으로 철근을 절곡하여야 하는 경우에는 상당히 힘이 듦은 물론 장시간의 작업시간이 소요되는 문제점이 있었고, 철근을 절곡하였다 하더라도 절곡된 각각의 철근마다 절곡각도 및 절곡위치에 미차가 발생하여 제품의 품질을 떨어뜨리는 문제점이 있었다.
However, conventional reinforcing bar bending machine, such as reinforcing bars used for reinforcing the head of steel pipes, has a specific shape having two consecutive bending portions (

In case of reinforcing steel bars, it is quite difficult and takes a long time to work. Even if the steel bars are bent, the difference in bending angle and bending position occurs in each bending bar. There was a problem dropping.

The present invention has been devised to solve the above problems, it can be easily bent through a single press operation when bending the reinforcing bars used for reinforcing the head of the steel pipe to have two bent portions in a row of course It is an object of the present invention to provide a reinforcing bar bending device that can be able to bend a large amount of reinforcing bar within a short time to significantly increase the workability.

In addition, it is an object of the present invention to provide a reinforcing bar bending device that can improve the quality of the product can work the same bending angle and bending position of the rebar.

Reinforcing bar bending apparatus of the present invention for achieving the above object is the main body is installed on the lifting block is moved up and down by the lifting means; A pressure roller unit disposed below the lifting block and provided with a pair of pressure rollers spaced apart from each other to press the reinforcing bar; It is installed on the lower portion of the main body facing the pressure roller portion, a pair of support rollers for supporting the reinforcing bar is provided spaced apart from each other; and made, including the pressure roller when the lifting block descends And the support rollers are alternately positioned between each other.

The reinforcing bar length adjustment plate is installed at one rear side of the main body so as to contact the end of the bending target reinforcing bar which is introduced between the support roller and the pressure roller through the front of the main body to adjust the length of the inlet of the bending target bar. Guide rods may be vertically installed on the main body so that both sides of the lifting block are coupled to guide the lifting block by the lifting means.

The rebar length control plate is connected to the support roller portion or the main body as a connection, one side of the outer peripheral surface of the connecting rod is formed with a bolt at a constant pitch, the bolt portion is fixed to the fixing nut to adjust the fixed position of the rebar length control plate do.

The pressurizing roller unit is fixed to the lifting block coupled to the lifting block, the roller fixing piece which is projected downward on both sides of the fixing plate and a pair of roller fixing holes are spaced from each other, and the roller fixing piece is spaced apart from each other and both ends of the roller It consists of a pair of pressure rollers which are respectively inserted and fixed in the fixing hole.

The support rollers are fixed to the bottom of the main body fixedly coupled to each other, the roller fixing piece formed by projecting upward on both sides of the fixing plate and a pair of roller fixing holes spaced from each other, and the roller fixing pieces are spaced apart from each other and both ends It consists of a pair of supporting rollers, each of which is fixed to the roller fixing hole.

Any one or more of the roller fixing holes may be formed in a rectangular shape to adjust the separation distance between the support rollers.

On the other hand, a position control tool is installed on one side of the elevating block, and a limit switch for controlling the elevating movement of the elevating block by limiting the elevating distance of the position control tool on one side up and down of the main body.

According to the present invention configured as described above, by bending the rebar to have two bent portions through a single pressurizing operation can significantly reduce the time required for the bending work as well as to reduce labor costs, bending angle And it is possible to mass-produce a product having the same bending position, thereby increasing the competitiveness with a much higher quality than the conventional product.

1 is a perspective view of a rebar bending device according to the present invention,
Figure 2 is a separation state of the pressure roller in the rebar bending device according to the present invention,
3 is a separated state of the support roller in the reinforcing bar bending apparatus according to the present invention,
Figure 4 is a state diagram showing a roller fixed hole formed in a rectangle in the rebar bending device according to the present invention,
5 is an enlarged view showing 'A' part of the rebar bending device according to the present invention,
Figure 6 is a connection state of the rebar length control plate in the rebar bending device according to the present invention,
Figure 7 is a state diagram showing a rebar bending device is installed position control tool and limit switch according to the present invention,
8 is a state of bending the rebar using the rebar bending device according to the present invention,
Figure 9 is a state diagram showing the reinforcement bent using the rebar bending device according to the present invention.

Hereinafter, a rebar bending device according to a preferred embodiment of the present invention with reference to the accompanying drawings will be described in detail.

1 is a perspective view of a rebar bending device according to the present invention, Figure 2 is a separation state diagram of the pressure roller in the rebar bending device according to the present invention, Figure 3 is a separation state diagram of the support roller in the rebar bending device according to the present invention, Reinforcing bar bending apparatus according to the present invention is a pressure roller which is installed so that the elevating block 14, which is moved up and down by the elevating means 12, the main body 10 is installed on the upper side, and the lower side of the elevating block 14 is directed downward. It comprises a portion 20, the support roller portion 30 is installed to face upward in the lower portion of the main body 10 to face the pressing roller portion 20.

The main body 10 is provided with the elevating means 12 to the upper portion of the elevating block for the elevating movement of the elevating block (14). The lifting means may be a cylinder which is installed vertically on the upper portion of the main body as shown in Figure 1 to elevate the elevating block, in addition to the motor is not shown, but is coupled to the elevating block to elevate the elevating block with the driving force It may be.

Operation of the lifting means can be controlled by a controller provided in the main body.

Guide rods 16 to which both sides of the elevating block 14 are coupled may be vertically installed at both sides of the main body 10 so that the elevating movement of the elevating block is performed smoothly. At this time, the guide rod 16 is formed as a plate body, as shown in Figure 1 is installed to be inserted into both sides of the lifting block, or is not shown but is formed in a rod shape to be installed to penetrate both sides of the lifting block Can be.

Here, as shown in FIG. 5, an oil groove 17 is formed on the surface of the guide rod 16 for smooth movement without generating noise during the lifting movement of the lifting block, and the oil groove 17 is formed in the shape thereof. Although not limited, the oil may be formed in a zigzag form so that oil does not quickly move downward.

In addition, the main body 10 may be used by being fixed to the ground, or may be used by moving the wheel on the bottom.

The pressure roller unit 20 is provided with a pair of pressure rollers 26 for pressing the bending reinforcement to be parallel to the ground while being spaced apart from each other, specifically, as shown in FIG. A fixed plate 22 which is fixed to the block 14 and a roller fixing piece 24 which protrudes downward on both sides of the fixed plate 22 and a pair of roller fixing holes 25 are spaced apart from each other, and the roller Both ends of the fixing piece 24 is fixed to each of the roller fixing hole 25 is composed of a pair of pressure rollers 26 are installed spaced apart from each other.

At this time, the pressing roller 26 is fixed to the roller fixing hole 25 by the fixing cap 27 while being inserted into the roller fixing hole 25 via the bearing 23 is rotatably installed with respect to the roller fixing piece 24. . Therefore, when the reinforcing bar is bent in the process of pressing the reinforcing bar when the pressure position is changed by the pressure roller to rotate itself to prevent the breakage of the pressure roller.

The pressure roller may use a pressure roller different in diameter depending on the diameter of the bending target reinforcing bars to be bent and the bending angle or amount of bending.

Here, the roller fixing hole 25 formed in the roller fixing piece 24 may be formed in a rectangular shape so as to change the position of the pressing roller according to the bending position of the bending target rebar.

In addition, the support bar 28 is provided between the roller fixing piece 24 to prevent the roller fixing piece 24 from bending outward due to the pressing force when the reinforcing bar is pressed by the pressing roller 26. It is installed to connect the fixing piece. In the embodiment of the present invention, the support bar 28 is provided with only one in the center portion of the roller fixing piece, but it is natural that it may be further provided on each side.

In addition, the support roller part 30 is provided with a pair of support rollers 36 spaced apart from each other upward in the pressing roller for supporting the bending target reinforcing bar, specifically, as shown in FIG. A fixed plate 32 coupled to the lower portion of the main body 10 and a roller fixing piece 34 protruding upward from both sides of the fixed plate 32 and having a pair of roller fixing holes 35 spaced apart from each other; , The roller fixing piece 34 is spaced apart from each other and is composed of a pair of support rollers 36, both ends of which are fixed to the roller fixing hole 35 respectively.

At this time, the pressing roller and the support roller is configured to be positioned between the alternating each other when the lifting block descends. More specifically, any one of the pressure rollers is drawn in between the support rollers, and one of the support rollers is installed to be drawn in between the pressure rollers. The reason why the support roller and the pressure roller are installed so as to be alternated with each other is as shown in FIG. 8, when the pressure roller is lowered in the state where the reinforcing bar is inserted between the pressure roller and the support roller. Positioned between the support rollers to form two bent portions.

Of course, in the present invention, the press roller and the support rollers were provided in pairs to form two bent portions, but in order to form three bent portions, the press roller and the support roller may be further provided one by one. have.

The support roller 36 is rotatably installed with respect to the roller fixing piece like the pressure roller. For this purpose, the support roller is inserted through the bearing 33 into the roller fixing hole 35 and then fixed with the cap 37. ) Is fixed. Therefore, in the process of supporting the reinforcing bar when the support position is changed as the reinforcing bar is to be supported by the support roller rotates itself to prevent breakage of the support roller.

Here, the support bar to prevent the roller fixing piece 34 from bending outward by pressure, such as the roller fixing piece for supporting the pressure roller between the roller fixing piece 34 for holding and fixing the support roller 36 38 is provided so as to connect the roller fixing piece.

And, as shown in Figure 4 any one or more of the roller fixing hole 35 may be formed in a rectangular shape to change the bending position of the reinforcement by adjusting the separation distance between the support roller 36.

Figure 6 is a connection state of the reinforcing bar length adjustment plate in the rebar bending device according to the present invention, the reinforcing bar length adjustment plate 40 is installed in the rear of the main body to be in contact with the end of the reinforcing bar.

The reinforcing bar length adjusting plate 40 is to adjust the length of the bending of the reinforcing steel retracted to be inserted between the support roller 30 and the pressure roller 20 through the front of the main body, is fixed to the support roller or the main body Lose. At this time, the rebar length control plate 40 is installed so that its length is adjusted to adjust the retract length of the rebar.

To this end, the reinforcing bar length adjusting plate 40 is connected to the support roller portion 30 or the main body 10 by a connecting rod 45. The connecting rod 45 is provided with a pair to be connected to both sides of the rebar length control plate to prevent the flow of the rebar length control plate 40, respectively.

A bolt portion 46 is formed at a predetermined pitch on one side outer circumferential surface of the connecting table 45, and a fixing nut 48 is screwed to the bolt portion 46 to adjust the fixed position of the rebar length control plate 40. do.

On the other hand, as shown in Figure 7, when the lifting block is moved by the operation of the lifting means, the position control on one side of the lifting block 14 to control the lifting position of the pressure roller unit installed in the lifting block The sphere 50 is installed, and the limit switch 55 is installed on one side upper and lower portions of the main body 10.

Therefore, the lifting distance of the lifting block 14 can be controlled by limiting the lifting distance of the position control tool 50.

At this time, the position control tool 50 is not necessary to change the position in the working process, it is easy to remove the separation of the pressure roller part due to cleaning and damage of the parts, as well as change the position of the position control tool for other reasons There is a case to be done.

To this end, the position control tool is installed via the control structure absolute 52 in the lifting block so that the position can be changed. The position control tool is formed with a screw thread on the inner circumferential surface, the control structure absolute screw is formed on the outer peripheral surface, the position control tool is installed so that the position is changed while being moved up and down screwed to the control structure absolute.

The rebar bending device of the present invention configured as described above introduces the reinforcing bar into the upper portion of the support roller in a state in which the elevating block is raised by elevating the elevating means. At this time, the reinforcing bar is to be brought into contact with the reinforcing bar length control plate, and then to operate the lifting means to lower the lifting block.

'자 형상으로 절곡되어 지는 것이다.As a result of the lowering of the lifting block, the pressure roller of the pressure roller unit installed at the lower portion of the lifting block presses the rebar placed on the upper surface of the support roller of the support roller. In this case, the pressure roller pressurizes the rebar as shown in FIG. It is inserted between the bent reinforcing bars, the bent reinforcing bar is formed in two successive bent portions in the shape of the side '

'It is bent into a shape.

'자 형상으로 절곡할 수 있고, 일단이 U자형으로 절곡된 철근을 인입시켜 측면형상이 '

'자 형상을 갖도록 절곡할 수도 있다. U자형 철근을 절곡하는 경우에는 도 9와 같이 절곡되어져 형성된다.At this time, the reinforcing bar is to be inserted into the reinforcing bar

'Able to be bent into a U-shape, and one side is bent into a U-shaped rebar,

It may be bent to have a 'shape'. In the case of bending the U-shaped reinforcing bar is bent and formed as shown in FIG.

As described above, the present invention can be bent in the reinforcing steel reinforcement through a single pressurization operation can be bent in a shorter time than the conventional manual bending method, as well as can be precisely bent compared to conventional products Quality competitiveness can be improved.

10: main body 12: lifting means
14: lifting block 16: guide rod
17: oil groove 20: pressure roller unit
22, 32: fixing plates 23, 33; Fixed cap
24, 34: roller fixing piece 25, 35: roller fixing hole
26: pressure roller 27, 37: bearing
28, 38: support bar 30: support roller portion
36: support roller 40: rebar length control plate
45: connecting rod 46: bolt portion
48: fixing nut 50: position control
52: control structure absolute 55: limit switch

Claims (8)

A main body 10 provided with an elevating block 14 which is moved up and down by elevating means 12;
A pressure roller part 20 disposed below the lifting block 14 and provided with a pair of pressure rollers 26 spaced apart from each other to press the reinforcing bars;
A support roller part 30 installed at a lower portion of the main body 10 so as to face the pressure roller part 20 and provided with a pair of support rollers 36 spaced apart from each other to support the reinforcing bar. Done,
Rebar bending device, characterized in that configured to be positioned between the pressure roller (26) and the support roller (36) alternately with each other when the lifting block (14) descends. The method of claim 1,
The rear one side of the main body 10 is installed so that the end of the bending target reinforcement retracted between the support roller unit 30 and the pressure roller unit 20 through the front of the main body is in contact with each other to adjust the length of the reinforcement of the bending target reinforcement Reinforcing bar bending device characterized in that the reinforcing bar length control plate 40 is installed to. The method of claim 2,
The rebar length control plate 40 is connected to the support roller portion 30 or the main body 10 by a connecting rod 45, a bolt portion 46 is formed at a predetermined pitch on one side of the outer peripheral surface of the connecting rod 45, The reinforcing bar bending device, characterized in that the fixing nut 48 is screwed to the bolt portion 46 to adjust the fixed position of the reinforcing bar length adjustment plate (40). The method of claim 1,
Reinforcing bar bending device, characterized in that the guide rod (16) is installed vertically to guide both of the lifting block (14) is coupled to the main body (10) when the lifting movement of the lifting block by the lifting means (12). The method of claim 1,
The pressurizing roller part 20 is fixed to the lifting plate 22 is fixed to the lifting block 14, and protruding downward on both sides of the fixing plate 22, respectively, a pair of roller fixing holes 25 are formed spaced apart from each other The roller fixing piece 24 and the roller fixing piece 24 are spaced apart from each other and both ends are fixed to the roller fixing hole 25 is fixed to each other is composed of a pair of pressure rollers 26 are rotatably coupled Rebar bending device. The method of claim 1,
The support roller portion 30 is fixed to the lower plate 32 is fixed to the lower portion of the main body 10, and the projecting upwards on both sides of the fixing plate 32 and a pair of roller fixing holes 35 are spaced apart from each other Formed roller fixing piece 34 and the roller fixing piece 34 is spaced apart from each other and both ends are fixed to the roller fixing hole 35 is fixed to each other is composed of a pair of support rollers 36 are rotatably coupled Rebar bending device. The method according to claim 6,
Rebar bending device, characterized in that any one or more of the roller fixing hole 35 is formed in a rectangular shape to adjust the separation distance between the support rollers (36). The method of claim 1,
On one side of the lifting block 14 is provided with a position control port 50,
Reinforcing bar bending device characterized in that the upper and lower sides of the main body 10 is provided with a limit switch 55 for controlling the lifting movement of the lifting block 14 by limiting the lifting distance of the position control tool (50).

Images