JPH06199Y2 - Rebar automatic binding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an automatic reinforcing bar binding machine used when automatically assembling a reinforcing bar prefabricated unit for making a structure such as a nuclear power plant.

[Conventional technology]

Conventionally, when constructing a structure of a nuclear power plant, most of the assembly of the reinforcing bar unit has to rely on human power.Therefore, the reinforcing bar work is arranged at regular intervals. Bundling work to connect the rebar and the horizontal rebar is done by hand.

However, the rebar used in the structure of a nuclear power plant is
The diameter was 38 mm, which was large, and the length was 12 m, which was long, and it weighed about 100 kg, which made the workability poor, required a large number of personnel, and took a long time to assemble. .

However, in the construction industry in Japan, the aging of workers and the shortage of skilled workers are in recent years, and improvement of the on-site production method is required, and a device that mechanized a part of the assembly work of the reinforcing bar unit is required. Various proposals have been made.

[Problems to be solved by the device]

Of the assembling work of the reinforcing bar unit, the automation of the reinforcing bar bundling work has not been realized yet. When considering the automation of the reinforcing bar binding work, a method of crimping or welding a special jig may be considered, but in this case, the binding member is not a wire rod but a plate, which increases the size of the device and the cost of the binding material itself. Has the problem of becoming.

The present invention solves the above problem, and an object of the present invention is to provide a reinforcing bar binding machine capable of automating the reinforcing bar binding work using a wire rod.

[Means for Solving Problems]

To this end, the automatic reinforcing bar binding machine of the present invention includes an actuator 5 provided on a mounting base 3, and support frames 9 and 9a slidably mounted on the mounting base and fixed to the actuator via a spring 10. And a binding wire twisting mechanism 19 that is rotatably provided with respect to the support frame, and a binding wire clamp that is slidably provided with respect to the binding wire twisting mechanism and that can bind the binding wire. A mechanism 20, a binding wire supply mechanism 23 for supplying a binding wire between the binding wire twisting mechanism and the binding wire clamp mechanism, and a reinforcing bar to be bound, and a binding for adjusting the bending radius of the supplied binding wire. A wire bending adjusting mechanism 36 and a sensor 2 for detecting the amount of expansion and contraction of the spring and controlling the actuator to adjust the tension of the binding wire.
7 and 29 are provided. It should be noted that the numbers added to the above-mentioned configurations are compared with the drawings in order to facilitate understanding of the present invention, and the configurations of the present invention are not limited thereby.

[Action]

In the present invention, for example, as shown in FIG. 1, the piston 11 of the actuator 5 is raised, the binding mechanism 12 is raised, and then the binding wire supply motor 16 is rotated.
When the binding wire 33 is sent out, straddling the intersection of the reinforcing bars 37a and 37b, and the binding wire clamping mechanism 20 is lowered in pairs, the binding wire 33 is cut and the binding wire twisting mechanism 19 and the binding wire are cut. It is sandwiched between the clamp mechanism 20. Then, the actuator 5 lowers the piston 11, and the limit switches 27 and 29 confirm the tension. Further, when the binding wire twisting motor 13 is driven while applying a constant tension, the binding wire twisting mechanism 19 rotates, and the binding wire 33 is twisted to rebar 3
The intersections of 7a and 38b are bound together.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a side view of the automatic reinforcing bar binding machine of the present invention. In the figure, a mounting base 3 is supported and fixed by four columns 2 on a base 1. An actuator 5 for moving the binding machine up and down is provided at the center of the mounting base 3, and the mounting base 3 is mounted.
Four columns 7 are provided at the four corners of the above so as to be vertically slidable via bearings 6. A support frame 9 is placed and fixed on these four columns 7, and a support member 10a having a spring 10 is attached to the lower surface of the support frame 9, and the strength of the spring 10 and the upper end of the piston 11 are fixed. Has been done.

A bundling mechanism 12 is attached on the support frame 9. The binding mechanism 12 includes a binding wire twisting motor 13,
It has a binding wire clamp air cylinder 15 and a binding wire supply motor 16, and is attached to the upper support frame 9a. The binding wire twisting motor 13 rotates the binding wire twisting mechanism 19 via the gear 17, and the binding wire clamping cylinder 15 slides the binding wire clamping mechanism 20 up and down. The binding wire supply motor 16 rotates the binding wire supply mechanism 23 via the bevel gears 21a and 21b.

Further, various sensors for controlling the binding machine are provided.
That is, photosensors 25 and 26 for detecting the rotation speeds of the binding wire twisting mechanism 19 and the binding wire supply mechanism 23 and controlling the twisting rotation speed and the binding wire feed amount are provided,
Further, the limit switches 27 and 29 for detecting the amount of expansion and contraction of the spring 10 and controlling the tension of the binding wire,
Limit switches 30 and 31 for detecting and controlling the upper and lower limit positions of the column 7 are arranged so as to face the spring 10.

2 and 3 show a sectional view and a plan view of the binding mechanism 12.

The binding wire supply mechanism 23 is composed of vertically opposed rollers, and the rotation of the binding wire supply motor 16 causes the bevel gear 21 to rotate.
The binding wire 33 which is transmitted to the binding wire supply mechanism 23 via a and 21b and wound around the binding wire supply reel 32 is sent to the binding wire bending adjusting mechanism 36 via the binding wire guide 35.
The binding wire supply reel 32 may be provided separately from the binding mechanism 12, and in that case, the binding wire can be supplied from a large reel.

The binding wire bending adjusting mechanism 36 is composed of three rollers arranged in a triangular shape, and adjusts the bending radius of the binding wire 33 by moving the upper roller up and down.
The binding wire 33 bent by the binding wire bending adjusting mechanism 36 is guided to the outside of the binding mechanism 12 from between the binding wire twisting mechanism 19 and the binding wire clamp mechanism 20, and further, the reinforcing bars 37a, 3a.
It is sent again between the binding wire twisting mechanism 19 and the binding wire clamping mechanism 20 across the intersection of 7b (state of FIG. 2),
The binding wire 33 of a predetermined length comes in contact with the stopper and the reinforcing bar 37
It will straddle the intersection of a and 37b.

The binding wire clamp mechanism 20 is vertically slidable by the piston 39 of the binding wire clamping air cylinder 15, and when the binding wire clamp mechanism 20 is lowered from the state of FIG. It is cut by the cutter 40 and is sandwiched between the binding wire twisting mechanism 19 and the binding wire clamping mechanism 20. In this state, the air cylinder 5
When the piston 11 is lowered by the above, the spring 10 contracts and the limit switch 29 turns on, so that the piston 11
When the limit switch 27 is turned on when the piston 11 moves up and the spring 10 extends, a down command is output. Therefore, the air cylinder 5 is controlled so as to be located between the limit switches 27 and 29, and a constant tension is applied to the binding wire 33.

In this state, when the binding wire twisting motor 13 is driven, the binding wire twisting mechanism 19 rotates via the gear 17,
By twisting the binding wire 33, the intersection of the reinforcing bars 37a and 37b can be bound. The binding wire 33 is cut off when the number of bindings is completed by the preset amount of binding wire feed and the number of twisting rotations. At this time, when the binding wire 33 is twisted, the binding wire 33 is shortened by that amount, the tension is increased, and the spring 10 is contracted, but this is detected by the limit switch 29 and the piston 11 of the air cylinder 5 is raised. Control to apply a constant tension. The positions of the limit switches 27 and 29 can be adjusted, so that the tension value can be varied.

FIG. 4 shows a control panel of the automatic reinforcing bar binding machine of the present invention. The control panel includes an operation mode setting unit 51, various data setting units 52, a data display unit 53, a data input unit 54, and a driving operation unit 55.

In the operation mode setting unit 51, a mode for setting the binding machine to an operating state, returning the binding machine to the original position, returning to the original position, automatic performing the binding machine, and setting data is selected.

In the various data setting section 52, a data setting mode of the twisting speed, the twisting speed, the reinforcing bar diameter, and the binding wire feed amount is selected, input from the data inputting section 54, and displayed on the data displaying section 53. The data is set by pressing the setting of the operation mode setting unit 51.

In the operation unit 55, a mode for selecting a high speed operation or a mode for rotating the binding wire twisting motor 13 to the right or left is selected.
The reason for selecting the right rotation or the left rotation is to change the rotation direction depending on the feeding direction of the binding wire 33 to the intersection of the reinforcing bars, which is effective in the case of ribs with different diameters and the like. This is because changing the direction of binding when binding is effective in terms of strength.

Next, referring to FIG. 5, a binding operation flow of the automatic reinforcing bar binding machine of the present invention will be described.

First, the piston 11 of the air cylinder 5 is raised, and the binding mechanism 12 is raised until the limit switch 30 is turned on (,). Next, the binding wire supply motor 16 is rotated to feed the binding wire 33, and the binding wire 33 having a predetermined length is laid across the intersection of the reinforcing bars 37a and 37b (). Next, when the binding wire clamp mechanism 20 is lowered, the binding wire 3
3 is cut by the cutter 40 and is sandwiched between the binding wire twisting mechanism 19 and the binding wire clamping mechanism 20 ().

In this state, the binding wire twisting motor 13 is driven to twist the binding wire half a turn (). Next, the piston 11 is lowered by the air cylinder 5 (), and the tension is confirmed by the limit switches 27, 29 (). Further, when the binding wire twisting motor 13 is driven while applying a constant tension, the binding wire twisting mechanism 19 rotates, and the binding wire 33 is twisted to rebar 37a, 37b.
The intersection of is bound (). Then, the binding wire clamp mechanism 20 is raised, and the piston 11 of the air cylinder 5 is lowered (,).

The present invention is not limited to the above embodiment, but various modifications can be made.

For example, although one binding machine is shown in the above embodiment, a plurality of binding machines are arranged in one row or a plurality of rows,
Alternatively, a plurality of binding machines may be sequentially moved to bind one row or a plurality of rows of reinforcing bars at the same time.

Further, an electric motor, an air cylinder, a hydraulic cylinder, or an electromagnet can be adopted as the drive source for sliding up and down or rotating in the above embodiment.

[Invention of invention]

As described above, according to the present invention, since the binding work of the reinforcing bars is automated, the workability is improved, the number of personnel is small, and by incorporating it into the automatic bar arrangement device, the reinforcing bar assembly work can be fully automated. Also, the time required for assembly is short.

Moreover, since a general numbering wire can be used without using a dedicated jig, the binding can be performed without the shape of the binding portion being influenced by a mesh, a blind shape, or the like.

Further, since the numbered wire is used, a sufficient binding force can be obtained even if the number of binding points is reduced, and the material cost is low and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic side view showing one embodiment of the automatic reinforcing bar binding machine of the present invention, FIG. 2 is a sectional view of the binding mechanism in FIG. 1, FIG. 3 is a plan view of the binding mechanism, and FIG. 5 is a diagram for explaining the function of FIG. 5, and FIG. 5 is a diagram showing a flow of a binding operation by the automatic reinforcing bar binding machine of the present invention. 5 ... Air cylinder (bundling mechanism vertical movement actuator), 10 ... Spring (tension adjustment mechanism), 1
2 ... Bundling mechanism, 13 ... Bundling wire twisting motor, 15
…… Bundling machine clamp air cylinder, 16 …… Bundling wire supply motor, 19 …… Bundling wire twisting mechanism, 20 …… Bundling wire clamping mechanism, 23 …… Bundling wire feeding mechanism, 27, 29
...... Limit switch (sensor), 33 ...... Binding wire, 3
6 ... Bundling wire bending adjustment mechanism, 37a, 37b ... Reinforcing bar.

Claims (1)

[Scope of utility model registration request] 1. An actuator provided on a mounting base, a support frame slidably mounted on the mounting base and fixed to the actuator via a spring, and rotatably mounted on the support frame. A binding wire twisting mechanism, a binding wire clamp mechanism slidably provided with respect to the binding wire twisting mechanism and capable of sandwiching the binding wire, the binding wire twisting mechanism and the binding wire A binding wire supply mechanism that supplies a binding wire between the clamp mechanism and the reinforcing bars to be bound, a binding wire bending adjustment mechanism that adjusts the bending radius of the supplied binding wire, and detects the expansion and contraction amount of the spring. A rebar automatic binding machine, comprising: a sensor for controlling the tension of a binding wire by controlling the actuator.