JP2980278B2 - Rebar binding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rebar tying device for mechanically tying rebars after arranging them in a reinforced construction using tying wires.

[0002]

2. Description of the Related Art The manual bundling of reinforcing bars requires a great deal of labor and time, and also requires skilled and specialized workers. In addition, especially for a large-diameter rebar, the binding wire also has a large diameter, and the binding by manual labor becomes heavy work, and the work efficiency is poor.

On the other hand, as a mechanical binding device, for example, the devices disclosed in Japanese Utility Model Publication No. 4-48282 and Japanese Patent Publication No. 4-77103 are used to process a binding material into a predetermined length and shape in advance. It is time-consuming, and if the diameter of the reinforcing bars to be tied is different, use a tying material with a length and shape corresponding to the reinforcing bar diameter each time, or use a tie longer than necessary for small-diameter reinforcing bars. There was a problem such as using a material.

[0004] Further, the above-described apparatus and Japanese Utility Model Laid-Open Publication No. 1-1770.
Also in the device disclosed in Japanese Patent Publication No. 33, there are problems such as that the ends of the binding wires are twisted too much to cause breakage, and that a sufficient rebar tightening force cannot be obtained.

Japanese Patent Laid-Open Publication No. Hei 6-115509 discloses a technique for twisting two U-shaped binding wires. However, in the known technique, since the binding wire is fed to form a U-shape, the feeding is not performed smoothly when the binding wire is thick.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and has been made to free a worker from heavy work.
In addition to improving work efficiency, a U-shaped binding wire can be easily created, and the same binding wire can be used for rebars with different diameters. It is intended to provide.

[0007]

According to the present invention, a binding wire drum for storing a binding wire and a binding wire from the binding wire drum are bent into a U-shape to hold an end portion and cut the middle. And a steel belt device having a binding wire hook for hooking the U-shaped binding wire and sending it out to the rebar side to lift it up.
And a binding lever for hooking and looping the loop portion of the character-shaped binding wire to bind.

[0008]

In the reinforcing bar binding device constructed as described above, the U-shaped portion of the binding wire is sent out to the rebar side by the binding wire hooking hook of the steel belt device and pulled up, and the loop of the pulled-up U-shaped binding wire is provided. The part is hooked and twisted by a binding lever to bind the rebar, and the binding wire is released and cut by a binding wire gripping / cutting device.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, the apparatus of the present invention includes a binding wire 2
, A binding wire 2 from the drum 1 is bent into a U-shape, a gripping / cutting device 10 capable of holding an end portion and cutting the middle, and a U-shaped binding wire 2 on a hook 31. A steel belt device 30 for hooking, sending out to the rebars 3 and 4 side, and pulling up; and a binding arm 40 for hooking and twisting the pulled-up binding wire 2 to bind them,
These members are attached to a frame (not shown).

Referring also to FIGS. 2 and 3, the gripping / cutting device 10 includes a fixed disk cam 11 and a cam 11.
, A yoke 13 rotated by the motor 12, and gripping portions 14 and cutting portions 19 provided at both ends of the yoke 13.

The grip portion 14 is provided with a locking portion 15 formed on the yoke 13 side and a movable portion 16 provided to face the locking portion 15.
7 and urged toward the cam 11 via a spring 18. Reference numerals 15a and 16a in the figure denote teeth for securely holding and fixing the binding wire 2.

The cutting section 19 is provided with a fixed blade 20 and a movable blade 21 similarly to the holding section 14. When the movable portion 16 and the movable blade 21 are lifted by the cam portion 11a of the disk cam 11, the movable portion 16 and the movable blade 21 respectively clamp and fix the binding wire 2 and cut the binding wire 2.
a is formed in a substantially semicircular portion of the disc cam 11.

Referring also to FIGS. 4 and 5, the steel belt device 30 includes a steel belt 32 having a hook 31 at a tip, a guide arm 33 for guiding the steel belt 32, and a steel belt housing the steel belt 32. It comprises a belt drum 34 and a feeding device 35 for feeding out the steel belt 32, and can be moved up and down and moved in the horizontal direction by means not shown. The hook 31 has a notch 31a.

As shown in FIG. 6, the guide arm 33 is formed in a T-shape so as to hold the reinforcing bars 3 and 4 at the position where the guide arm 33 is lowered and moved horizontally. A pair of grooves 33a for guiding the steel belt 32 is formed on the inner surface.

The binding arm 40 has a horizontal arm 4
1 and a drive section 42 that bends in a U-shape from the upper end of the arm section 41. The drive section 42 is fixed to an output shaft of a turning motor 43, and the turning motor 43 is slidably supported on a horizontal slide table 45 via a slider 44.

Next, the mode of binding will be described.

The end of the binding wire 2 from the drum 1 is previously gripped by the gripper 14 of the gripper / cutting device 10. Then, while holding this end, the yoke 13 is rotated about 180 degrees in the direction of the arrow, and the binding wire 2 is hung around the hook portion 31 of the steel belt device 30 in a U-shape to stop. Then, the middle of the binding wire 2 is inserted into the cutting portion 19 (FIG. 1).

Next, the steel belt device 30 is lowered, horizontally moved to the binding arm 40 side, and then raised to stop at a position where the guide arm 33 holds the reinforcing bars 3 and 4. Then, the steel belt 32 is sent out by operating the feed roller 35, the hook 31 is moved along the guide arm 33, and the binding wire 2 is wound around the lower surfaces of the reinforcing bars 3, 4 and pulled up (FIG. 6). In this state, the binding arm 4
As shown in FIG.
It is directed to the inside of one notch 31a.

Next, the binding arm 40 is moved rightward and rises, the binding wire 2 is hooked and lifted by the arm portion 41, and the tip is inserted into the middle portion 2a of the binding wire 2 (FIG. 7).

Next, the binding arm 40 is turned to bind the binding wire 2 and the yoke 13 of the gripping / cutting device 10.
Is finely swirled about 180 degrees in the direction of the arrow (see FIG. 3) to release the grasping of the binding wire 2 by the grasping portion 14 and the cutting portion 19.
Cuts the binding wire 2 on the drum 1 side. Then, the turning of the binding lever 40 is stopped with a predetermined torque, and the binding is completed (FIG. 8).

[0022]

Since the present invention is configured as described above, it has the following effects. (1) Workers can be released from heavy work, and work efficiency can be improved. (2) It is possible to securely bind with a U-shaped binding wire. (3) Therefore, it is possible to reduce the cross-sectional area of the binding wire, use a binding wire having low rigidity, and eliminate breakage of the binding wire. (4) Therefore, even if one binding wire breaks, the other binding wire can hold the binding. (5) It is not necessary to process the binding wires in advance by using a necessary amount of the continuous binding wires, and it is possible to eliminate waste of the binding wires.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a main part of FIG. 1;

FIG. 3 is a side view of the grip unit shown in FIG. 2;

FIG. 4 is a view taken in the direction of arrow A in FIG. 6;

FIG. 5 is a view taken in the direction of arrow B in FIG. 4;

FIG. 6 is a front view showing a state where a binding wire is wrapped around a reinforcing bar by a hook;

FIG. 7 is a front view showing a state where a binding wire is hooked and lifted by a binding arm.

FIG. 8 is a front view showing a state where binding is completed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Drum 2 ... Binding wire 3, 4 ... Rebar 10 ... Holding / cutting device 11 ... Disk cam 12 ... Motor 13 ... Yoke 14 ... Holding part 15. ··· Locking parts 15a, 16a ··· Tooth part 16 ··· Movable part 17 ··· Shaft 18 ··· Spring 19 ···································・ Steel belt device 31 ・ ・ ・ Hook 31a ・ ・ ・ Notch 32 ・ ・ ・ Steel belt 33 ・ ・ ・ Guide arm 34 ・ ・ ・ Steel belt drum 35 ・ ・ ・ Feed device 40 ・ ・ ・ Bundling arm 41 ・ ・ ・Arm part 42 Drive part 43 Rotating motor 44 Slider 45 Slide table

Claims (1)

(57) [Claims] A binding wire drum for storing a binding wire, a gripping / cutting device capable of bending a binding wire from the binding wire drum into a U-shape to hold an end portion and cut the middle thereof; A steel belt device provided with a binding wire hook for hooking the U-shaped binding wire and sending it out to the rebar side, and a binding unit for hooking and twisting a loop portion of the sent U-shaped binding wire to bind. A reinforcing bar binding device comprising a lever and a lever.