JP2582463Y2 - Rebar bending machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing bar bending machine which can easily set a bending angle of a reinforcing bar by rotating a dial.

[0002]

2. Description of the Related Art Conventionally, when forming a piece of construction equipment by bending a part of a reinforcing bar, a reinforcing bar bending machine is generally used. In the reinforcing bar bending machine, a reinforcing bar is set on an upper surface of a machine frame. Some of the reinforcing bars are bent at a predetermined angle by a fulcrum provided on the upper surface thereof and a power point arm which rotates about the fulcrum. In such a machine frame, a drive motor, a speed reducer connected to the motor, a music arm that is linked to the speed reducer and rotates around a fulcrum are housed, and a power arm is linked to the music arm, and The power point arm was rotated by the power of the motor to bend the rebar.

Further, on the upper surface of the machine frame, an arc-shaped stopper frame is provided on the rotation orbit of the power point arm, and a plurality of angle adjusting holes are drilled in the frame, and a power point is provided in the adjusting hole. A stopper for regulating the arm was attached to set the rotation angle of the arm.

[0004]

[Problems to be Solved by the Invention] However, the above-mentioned rebar bending machine still has the following problems. In other words, when setting the rotation angle of the power point arm, the pin is inserted and attached to the stopper frame provided on the locus, and when inserting the pin, an erroneous operation occurs that the pin is inserted by mistake into a different adjustment hole. I was In addition, when changing the bending angle of the rebar, the operation is very complicated because the pin is pulled out and inserted each time.

An object of the present invention is to provide a rebar bending machine which can solve the above-mentioned problems.

[0006]

The present invention has the following features.

In the present invention, a fulcrum is provided at the center of the upper surface of the machine frame, and a power point arm is rotatably provided around the fulcrum, and a driving motor for rotating the arm is connected to the power point arm in an interlocked manner. In the rebar bending machine, a control device is connected to the drive motor, and a dial-type bending angle setting device for setting a turning angle of the power point arm is connected to the control device, and a scale is provided on a side surface of the machine frame. While providing a rotatable dial having, a proximity sensor for stopping the drive motor is integrally mounted on the dial, and further,
A sensor detector that moves around the dial board in conjunction with the operation of the force point arm is disposed, and the proximity sensor is operated by the detector.

In the present invention, a rotary shaft for a dial is provided in a machine frame, and an interlocking rotary shaft interlocked with a power point arm is disposed in the rotary shaft. , And is configured to be movable around the dial.

[0009]

[Effects of the Invention] In the present invention, when setting the bending angle of the reinforcing bar, the dial panel provided on the side of the machine frame is rotated, and the proximity sensor on the dial panel is moved to set the bending angle of the reinforcing bar. When the drive motor is actuated and the rebar is bent, the sensor detector moves around the dial in conjunction with the force point arm and approaches the proximity sensor provided on the dial,
The drive motor is stopped based on the output signal from the sensor. By stopping the operation of the power point arm at that position by stopping the drive motor, the rebar can be bent to the set angle.

As described above, according to the present invention, in particular, by setting the bending angle of the reinforcing bar by operating the dial, the operation can be performed easily and easily.
Erroneous operation can be prevented.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below based on an embodiment shown in the accompanying drawings. In FIG. 1, reference numeral 1 denotes a reinforcing bar bending machine of the present invention. The reinforcing bar bending machine 1 has a table 3 for bending a reinforcing bar on an upper surface 2a of a machine frame 2 which can be placed on the ground at a predetermined interval. And a fulcrum 4 is arranged at the center of the table 3 and the fulcrum 4 is
A force point arm 5 that rotates around the center is disposed. As shown in FIG. 2, a drive motor 6 for operating the power point arm 5 and a speed reducer 7 are housed in the machine frame 2, and an output pulley 6a of the motor 6 and an input pulley of the speed reducer 7 are housed. 7a is connected with a belt V. Reference numeral 4a denotes a fulcrum pin provided at the fulcrum 4, and 4b denotes a fulcrum roller attached to the fulcrum pin 4a.

A reinforcing bar setting space 8 is provided on the table 3 between the fulcrum 4 and the power point arm 5 for setting a bent portion of the reinforcing bar.
Is provided, and the reinforcing bar is fixed by the receiving portion 9.

Further, as shown in FIG. 3, a rotary output shaft 10 is mounted on the fulcrum 4 on the upper surface of the speed reducer 7 in the machine frame 2.
And a base end of a long curved arm 11 disposed on the upper surface 2a of the machine frame 2 is connected to an upper portion of the output shaft 10 so that the output shaft 10 can be bent by rotation of the output shaft 10. The arm 11 is rotated in the circumferential direction.

Further, on the upper surface of the curved arm 11, FIG.
As shown in FIG.
A power point roller 13 for bending a reinforcing bar is provided at the inner end of the arm 5, and the power point arm 5 and the power point roller 13 are integrally operated by the operation of the bending arm 11. 3a indicates an arc-shaped long hole provided in the table 3, and the same long hole 3a
The power point arm 5 on the table 3 and the bending arm 11 are connected to each other by a connecting protrusion 12 via the connecting arm 12.

Further, in this embodiment, a bending arm return spring 14 is mounted on the rotation output shaft 10 and the bending arm 11, and when the power point arm 5 rotates at a predetermined angle, the driving motor 6 is stopped, and the activated music arm 11 is returned from the predetermined rotation position to the original position.

Next, the rebar bending machine 1 is provided with a dial-type bending angle setting device 15 as shown in FIGS.
Is easily set, and the configuration will be described in detail below. That is, as shown in FIG. 4, a bearing 16 is provided on the ceiling surface of the machine casing 2, and a cylindrical dial rotating shaft 17 having a vertical direction is attached to the coaxial bearing 16. A plurality of dials 18 with scales on axis 17
Are rotatably mounted, and a part of each dial board 18 is projected outward through a long hole 19 provided on a side surface of the machine casing 2.

A proximity sensor 20 for stopping the drive motor 6 is attached to the opposite side of each dial board 18, and the operation of the force point arm 5 around the dial board 18 in the machine frame 2 is performed. A sensor detector 21 that moves around in conjunction with the sensor is disposed, and the detector 21
When the vehicle approaches, the sensor 20 detects the sensor detector 21 and stops the drive motor 6 based on the output signal.

In this embodiment, as shown in FIG. 4, an interlocking rotary shaft 22 interlocked with the power point arm 5 is concentrically disposed in the rotary shaft 17 for the dial, and a lower end of the interlocking rotary shaft 22 is provided. In the department,
A longitudinal sensor detector 21 is connected in the up-down direction via a stay 23, and interlocked with the rotation of the power point arm 5, the detector 21
Moves around the dial 18.

As shown in FIG. 4, the sensor detectors 21 are arranged vertically over the proximity sensors 20 provided on the respective dial boards 18 to operate the respective sensors 20. . Reference numeral 24 denotes a switch for the proximity sensor 20 provided on the side surface of the machine casing 2. Further, as shown in FIG. 5, an interlocking mechanism 25 is disposed between the rotation output shaft 10 and the interlocking rotary shaft 22 so as to interlock the force point arm 5 and the interlocking rotary shaft 22. I have.

Further, in the present invention, as shown in FIG. 6, a control device 26 for operating by the proximity sensor 20 is connected to the drive motor 6, and the motor is controlled based on an output signal from the proximity sensor 20. 6, the motor 6 is stopped, and the turning angle of the power point arm 5 is controlled.

Next, the method of using the above-described rebar bending machine 1 will be described in detail, that is, the rebar setting space 8 of the table 3 will be described.
Then, the rebar is set, the drive motor 6 is operated by the operation switch, and the power point arm 5 is integrally operated with the rotation of the bending arm 11, and the power point roller of the arm 5
The rebar is bent in an arc shape by the cooperation of 13 and the fulcrum roller 4b.

When setting the bending angle of the reinforcing bar,
When the dial plate 18 provided on the side of the machine frame 2 is rotated, the proximity sensor 20 on the dial plate 18 is moved, the bending angle of the reinforcing bar is set, and the drive motor 6 is operated to bend the reinforcing bar. In addition, the sensor detecting body 21 moves around the dial board 18 in conjunction with the force point arm 5 and approaches the proximity sensor 20 provided on the dial board 18, and the driving motor is driven based on an output signal from the sensor 20. 6 is stopped. Then, by stopping the operation of the power point arm 5 at that position by stopping the drive motor 6, the rebar can be bent to the set angle.

Further, when the drive motor 6 is stopped, the bending arm 11 and the power point arm 5 are returned to the original positions by the return spring 14, and the next reinforcing bar is set in the reinforcing bar setting space 8.

In the present invention, in particular, by setting the bending angle of the rebar by operating the dial board 18, the operation can be performed easily and easily, thereby preventing erroneous operations and the like. Further, since a plurality of dial boards 18 are provided, each dial board 18 can be set to a different angle, and each music piece angle can be easily switched by the switch 24.

[Brief description of the drawings]

FIG. 1 is a perspective view of a rebar bending machine according to the present invention.

FIG. 2 is a sectional side view of the rebar bending machine.

FIG. 3 is a plan view of the reinforcing bar bending machine.

FIG. 4 is an explanatory diagram showing an internal configuration of a reinforcing bar bending machine.

FIG. 5 is an explanatory view showing an interlocking mechanism.

FIG. 6 is an explanatory diagram illustrating a configuration of a control device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rebar bending machine 2 Machine frame 4 Support point 5 Force point arm 6 Drive motor 7 Reduction gear 15 Dial-type bending angle setting device 17 Dial rotation axis 18 Dial board 20 Proximity sensor 21 Sensor detector

Claims (2)

(57) [Scope of request for utility model registration] A fulcrum (4) is provided at the center of the upper surface of the machine frame (2), and a power point arm (5) is provided around the fulcrum (4).
Is connected to a drive arm (5), and a drive motor (6) for rotating the arm (5) is connected to the drive point motor (6). with, in the control device connects the dial-tune the angle setting device for setting a rotation angle of the power point arm (5) (15), the side surface of the machine frame (2), the dial having a scale (18) rotation
It can be installed freely, and the drive module can be
Proximity sensor (20) that stops the motor (6)
And around the dial (18), the power point arm (5)
Sensor detector (21) that moves around in conjunction with the operation of
And a proximity sensor (20) operated by the detection body (21) . 2. A rotary shaft (17) for a dial is provided in a machine frame (2) .
In the same rotation axis (17), a link linked to the power point arm (5)
A dynamic rotating shaft (22) is provided, and a sensor detection is
Connect the intelligent body (21) and move around the dial (18)
The rebar bending machine according to claim 1 , wherein the rebar bending machine is configured as follows .