KR950004575Y1 - Bending devices - Google Patents

Abstract

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Description

Rebar bending machine

1 is a perspective view of the present invention.

2 is a plan view of the present invention.

3 is a cross-sectional view taken along the line A-A of FIG.

Figure 4 (a) (b) is a plan view showing the operating state of the present invention.

5 is a plan view showing an operating state of another embodiment of the present invention.

6 is an exploded perspective view of a fixed bending member which is a bending point of the present invention.

* Explanation of symbols for main parts of the drawings

1: top plate 2: bottom plate

4: control panel 5: oil tank

8: hydraulic regulator 9: hydraulic motor

10: movable bending member 11: fixed bending member

12: support portion 13: support plate body

15: working disk 16: bending angle selection bracket

18: stop 19, 20: limit switch

21: spring 22: bracing member

The present invention mainly relates to a rebar bending machine for easily and quickly bending reinforcing bars in the concrete of a building at a desired angle, and the present design makes it possible to install the rebar bending machine itself so that it can be used in a construction site. Of course, it is possible to bend the rebar directly in the business dealing with the reinforcing bar itself, so that the reinforcing bar can supply the bent reinforcement required for the concrete building, strengthening the rotating output of the movable bending member for bending the reinforcement It aims to extend the service life of the machine without any trouble by allowing the member to instantaneously eliminate the rotational inertia of the member.Also, it is a general hydraulic regulator supplying hydraulic pressure to the hydraulic motor. It can be adjusted according to the thickness of the rebar and the bending angle of the rebar. In addition, the rotation angle of the movable bending member can be arbitrarily adjusted according to the bending angle of the reinforcing bar, and the reverse rotation return operation is automatically performed immediately after the bending operation of the movable bending member is completed. Another purpose is to make it easy to take out the reinforcing bar and to insert the next reinforcing bar, and another purpose is to replace the fixed bending member itself with a large diameter or a small one. At the same time, the movable bending member and the supporting member can be moved forward and backward with respect to the fixed bending member, so that the bending arc of the iron bending portion can be made larger or smaller, and the bending portion can be bent up to 180 °. To provide the bending reinforcing bars required by concrete buildings The.

In general, in order to bend rebar in the construction site of concrete building, the rebar is inserted into the reinforcing bar on the workbench to fix the reinforcing bar, the reinforcing bar is formed by the hook formed at the end of the long working rod, and then the worker artificially moves the long working rod. Since the rebars have been bent as a result of work, it is difficult to bend the rebars with such an artificial work, and it takes a lot of processing time, and nowadays, the labor intensive work requires expensive labor costs or In order to avoid itself, there was a problem that many difficulties occurred in supply and demand of labor at the construction site.To solve this problem, a pneumatic cylinder was mounted on a rebar bending work bench, and the reinforcing bar of the piston of the pneumatic cylinder was used. Although bending was introduced, Needs a compressor that generates pneumatic pressure, and because the compressor itself can be used to bend large rebars, it has the advantage of mechanically bending steel without labor, while the cost of purchasing a separate compressor The problem of having to provide the place where the additional wall and compressor can be installed must be provided. Also, in the case of the bending device using the pneumatic cylinder, the bending angle of the reinforcing bar cannot be adjusted because it is difficult to adjust the retracting working distance of the piston. There was a drawback that it was not possible to supply various bending bars effectively.

The present invention was made to be able to bend the reinforcement more efficiently in consideration of the above-mentioned matters, and to be able to bend quickly to the bending angle of all bent reinforcement to be reinforced in concrete building, the present invention is attached When described in detail according to the drawings of the embodiment as follows.

The upper and lower plates (1) and (2) are connected to the support angle (3), and the lower panel is equipped with a control panel (4) for controlling the power and a power source supply device for supplying hydraulic pressure as a power source, and the upper plate is bent to bend the rebar. Separate the device.

In the power source supply device, a pump 6 for pumping oil in the oil tank 5 is connected to the motor 7 output shaft, and the pump supplies pumped oil pressure to the hydraulic regulator 8. The regulator has the function of selecting and discharging any one of the two hydraulic discharge pipes (8a) and (8b) by receiving the electric control signal from the supplied hydraulic pressure, so that the hydraulic motor can be rotated forward and backward. It is also possible to adjust the hydraulic displacement, so that the rotational speed of the hydraulic motor can be adjusted.

The hydraulic discharge conduits 8a and 8b of the hydraulic regulator 8 are connected to a hydraulic motor 9 attached to the bottom center of the upper plate 1 to provide a power source for forward and reverse rotation of the hydraulic motor. .

The output shaft 9a of the hydraulic motor 9 is exposed on the upper plate 1 so as to rotate the movable bending member 10 forward and reverse.

The bending device of the upper plate 1 is composed of a movable bending member 10 and a fixed bending member 11, the fixed bending member 11 is fixed to the upper plate 1 by a support portion 12 to have a proper distance. Is fixed to the center of the support plate body 13, the fixed bending member 11 is fitted to the fixing bracket (11a) mounted on the upper plate and at the same time the rotation action is completely suppressed by the anti-rotation projection (11b), In addition, the fixed bending member 11 is configured so that the diameter of the large, medium, small size can be selected and installed.

The support plate body 13 of the support portion 12, the opposite portion of the portion fixed to the projecting portion 12 protrudes in an arc shape to form an outer arc guide plate 13a and an arc guide groove 13b in the inner side of the movable bent portion 10 ) To be guided in an arc.

The movable bending member 10 includes a rotary arm 10a horizontally arranged on the output shaft 9a of the hydraulic motor 9, two protruding supports 10b and 10c mounted on the rotary arm, and a forward and backward adjustment. It consists of an arm 10d and a circular compression tool 10f, and the retreat control arm 10d is fixed to the protruding support as a bolt through the long hole (a) and (b) and the bending control arm is fixed by the width of the simultaneous long hole. It is moved and adjusted with respect to the member 11, and the circular crimp 10f attaches itself freely in the attachment in a bolt etc.

The protruding supports 10b and 10c of the movable bending member 10 protrude outwardly of the arc guide groove 13b and the arc guide plate 13a of the support plate body 13 and are configured to be guided in rotational operation. The sphere 10f revolves around the fixed bending member in a state spaced at a minute interval from the support plate body 13 and freely rotates when the bending of the reinforcing steel 14, which is a workpiece, is simultaneously performed. Configured.

Further, below the rotary arm 10a, the operation disk 15 is constructed so that the rotational operation is possible starting from the starting point irrespective of the rotational operation of the output shaft 9a of the hydraulic motor 9. The working disk 15 is concentrically arranged with two rows of bending angle selection grooves 15a in a zigzag shape, and a plurality of bending angles are also selected in the protruding portion 15b protruding from the arc middle of the working disk 15. The grooves 15c were drilled in a row, and the bending angle selection grooves 15a and 15c were bent in the desired angle by selectively fitting the fitting protrusions 16a of the bending angle selection bracket 16. will be.

On the other hand, the bending operation of the reinforcing bar described above is performed when the movable bending member 10 is operated when the main switch of the control panel 4 is operated "on" and "on" of the foot switch 17 after "on" and "off" operation. The angle of rotation until the bending angle is selected to the bending angle selection bracket 16 by one rotational operation is the bending angle of the rebar, but the rebar itself has some elastic force, so the elasticity of the reinforcing bar to be returned to its original state after bending is considered. Since it is preferable to bend about 5 ° more than the bend angle width, an angle θ of about 5 ° is spaced between the end 15d of the operation disk 15 and the stop 18 that blocks the end. Immediately before the above-described end 15d is brought into contact with the stop 18, the end side connection 15f of the operation disk 15 is configured to operate the limit switch 19. 19) controls the solenoid valve inside the hydraulic regulator (8) to The motor 9 is responsible for inverting the hydraulic supply so that the reverse rotation in the forward rotation operation, the movable bending member 10 to reverse rotation by the operation of the above-described reverse limit switch 19 is the start end The hydraulic switch is operated by operating the limit switch 20 mounted on the hydraulic valve 6 to shut off the hydraulic supply to the hydraulic motor 9 and to return the pumped hydraulic pressure to the oil tank 5. The momentary stop operation of the rotor 9 is enabled, so that the inertia force can be eliminated during the inversion operation or the stop operation of the movable bending member 10 that has been rotated forward or reverse. When the reverse rotation operation of the movable bending member 10 is performed, A spring 21 for returning the working disk 15 to its original position is provided.

In addition, the support plate body 13 is provided with a support member 22, this support member 22 also forms a long hole 23 so as to be able to control the advance and retreat like the control arm 13 to be fixed with a bowl It is made up.

The operation disk 15 is supported by a support roller 24.

Referring to the effect of the embodiment of bending the reinforcing bar 14 by the present invention configured as described above are as follows.

As shown in the embodiment of FIG. 4 (a) (b), when bending the reinforcing bar 14, which is a workpiece, at 90 ° angle, the bending angle selection bracket is first rotated so that the movable bending member 10 rotates only up to 90 °. 16) is moved to the bending angle selection groove 15a located at an angle of 90 °, and then between the fixed bending member 11 and the circular pressing hole 10f of the movable bending member 10 coincides with the outer diameter of the reinforcing bar 14. The adjustment work is to loosen the bolts assembled to the protruding support (10b), (10c) a little, and then adjust the advance control arm (10d) by tightening the bolt again after the movement control, and Adjust the brace member 22 in the same manner as the control method of the advance control arm so that the front end face of the brace member coincides with the circular crimp 10f, and then the reinforcing bar 14 is inserted between the circular crimp and the fixed bending member 11. When it is closed and the foot switch 17 is operated once, the solenoid valve of the hydraulic regulator 8 is hydraulically driven. The hydraulic motor is forwardly rotated by discharging the hydraulic pressure to the hydraulic discharge pipe line 8a for forward rotation of the rotor 9, and thus the rotary arm 10a receives the rotational force, thereby supporting the protruding support of the movable bending member 10. 10b) (10c) is bending the reinforcing bar while rotating operation along the outer periphery of the arc guide groove (13b) and the arc guide plate (13a), at this time the circular crimp for bending the bar while pressing the outer peripheral surface of the fixed bending member 11 (10f) is rotated in close contact with the reinforcing bar so that the bending portion of the reinforcement is not subjected to the sliding friction action to the circular crimp, when the movable bending member 10 reaches the 90 ° angle position In the state where 10 is in contact with the bending angle selection bracket 16, since the inversion limit switch 19 is not in operation yet, the movable bending member 10 has the end 15d of the operation disk 15 and the stop table ( 18) rotates by an angle (θ) 15f of the connections operate the limit switch 19, and simultaneously with the operation of the limit switch 19, the hydraulic regulator 8 receives the signal and supplies the pumped hydraulic pressure to the reverse rotational hydraulic discharge line 8b. Since the hydraulic motor (9) is operated in a reverse rotation in the forward rotation state instantaneously, the operation disk 15 does not strongly collide with the stop 18, and also the spring (21) holding the start end Since the inertia force of the working plate is prevented by the elastic action of, the filling phenomenon between the working plate and the stop can be minimized to minimize the phenomenon caused by the mechanical device crash. (See also "A" and "I" in Figure 4.)

Thereafter, when the movable bending member 10 reversely rotated by the limit switch 19 reaches the first start end, the limit switch 20 which stops the hydraulic motor 9 is operated. Since the rotor 9 is stopped at a moment, the phenomenon in which the movable bending member 10 collides with the support plate body 13 is excluded, and the spring (when the movable bending member 10 is reversed after the bending operation is finished) By returning the working disc 15 to the original position by the elastic return force of 21) to prepare for the next bending operation.

On the other hand, under the state in which the movable bending member 10 is moved to the starting end and the limit switch 20 is operated, the hydraulic pressure pumped by the pump 6 is flowed back to the oil tank 5 directly from the hydraulic regulator 8, As the operator re-operates the foot switch 17, the action of supplying the hydraulic pressure in the forward rotation direction of the oil rock motor 9 is repeated.

In the above embodiment, the bending of the reinforcing bars 90 °, respectively, but the bending angle of the reinforcing bar is not limited to 90 ° by selecting the bending angle selection groove (15a) of the operation disk 15 bending angle selection bracket 16 ) Can be bent at an angle within 180 °.

In addition, the present invention has an advantage that can be selected to some extent the bending radius of the bending portion of the reinforcing bars, when explaining the embodiment for this, as shown in the example of FIG. 5 using a large diameter fixed bending member 11 When bending, the bending diameter of the bending part is bent to a large radius. In order to obtain such an effect, the fixing bending member 11 can be detached from the fixing bracket 11a. Since the effect can be obtained (see FIG. 6), and the advance control arm 10d and the support member 22 can be moved and adjusted, the fixed bending member 11 can be used to have a large diameter and a small diameter within the range of its movement. Very effective.

The present invention uses a hydraulic motor that is capable of forward and reverse rotation as well as the rotational inertia of the movable bending member when changing the rotation direction, thereby excluding the failure rate of the mechanical device, thereby extending the service life. By providing a device that can bend the rebar quickly and easily at the required bending radius and bending angle, it can be bent very efficiently at the construction site as well as bend according to the builder's order in the shop handling the rebar. It is a practical design that has the advantage of shortening the construction air by supplying and using the bendable reinforcing bars necessary at the time of construction at the construction site by providing the advantage of supplying the processed rebar. .

Claims (1)

As the hydraulic motor 9 mounted on the bottom of the upper plate 1, the movable bending member 10 is operated forward and reverse rotation along the arc guide plate 13a and the arc guide groove 13b of the support plate body 13. The circular pressing hole 10f of the movable bending member is capable of bending the reinforcing bar by turning about the fixed bending member 11 about half a turn, and fixing the bending angle selection bracket 16 at an arbitrary angle position below the movable bending member. Forming a working disc 15 zigzag-arranged in a concentric circle to the bending angle selection groove that can be made to be configured to be able to bend the reinforcement inserted between the fixed bending member and the circular crimp at an angle set by the rotation operation of the movable bending member In the iron bending machine, the working disk is supported by a support roller 24 so that the upper plate can be rotated, and one end of the working disk is elastically installed by a spring 22, and the end 15d is a stationary table. 5 degrees between 18 Group other than reinforced bent to be spaced apart by the angle (θ) state, characterized in that the reinforcement bending hayeoseo configured to operate as the original angular width was further rotation operation can not be the original position by elastic restoring force of the spring.