JPH0477103B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Prior Art> Normally, reinforcing bars are tied together manually by workers. Specifically, approximately U is placed at the intersection of reinforcing bars.
The binding wire is straddled in the shape of a letter, and each free end of the binding wire is twisted and tied using a hook-shaped tool called a hooker. In addition, various tying machines that mechanically perform the reinforcing bar tying work have been proposed, as disclosed in, for example, Japanese Patent Publication No. 52-18502, Japanese Patent Publication No. 52-25182, and Japanese Patent Publication No. 53-23607. There is.

<Problems to be Solved by the Present Invention> The conventional manual tying method described above is not only inefficient in that it requires a lot of manpower, but also requires a lot of skill. There is an inconvenience that variations in the binding tend to occur, such as when the binding is too weak or the binding wire is broken due to excessive tightening.

In addition, in the case of mechanical binding machines, the ends of the binding wires may be exposed above the intersections of reinforcing bars, causing injury to workers' feet, or the ends of the binding wires may be twisted too much. There is a problem that the reinforcing bars may break, and the tying machine shown in Japanese Patent Publication No. 53-23607 has a structure in which two tying wires are straddled at the intersection of the reinforcing bars and the tying wires are tied below the reinforcing bars. However, maintenance is troublesome due to the large number of component parts, and furthermore, the twisting process of the ends of the binding wire depends on manual operation of the handle, making it difficult to obtain stable binding.

<Object of the present invention> The present invention has been made in view of the above points, and it is an object of the present invention to provide a reinforcing bar tying device that can improve the efficiency and labor-saving of tying work, and can also tie well with no variation in the tying condition. With the goal.

<Structure of the present invention> Hereinafter, one embodiment of a reinforcing bar binding device according to the invention will be described.

(b) Overall configuration of the device An example of a reinforcing bar binding device is shown in FIGS. 1 to 4.

This reinforcing bar binding device consists of the following parts.

portal frame Binding wire push-in part Binding wire supply section Bending part of the end of the binding wire Twisted part at the end of the wire binding Each part will be explained below.

(b) Gate-shaped frame (Figures 1 and 2) The gate-shaped frame 1 consists of two columns 11 arranged in parallel.
A top plate 12 is connected between the upper portions of portions a and 11b to form a gate shape. And the opposing pillars 11a, 1
A space with an open bottom is formed between 1b, and reinforcing bars to be bundled are accommodated in this space. Also, each pillar 1
A contact plate 15 is provided inside 1a and 11b to prevent the binding wire C from coming out.

(c) Push-in part for binding wires A push-in plate 2 is provided between both supports 11a and 11b of the gate-shaped pedestal 1 so that it can be raised and lowered. The pushing plate 2 is a thin plate intended for pushing a single binding wire C across the intersection of reinforcing bars, and its lower surface is recessed in a shape corresponding to the arc shape of the binding wire C. Form. Push plate 2
For example, as a means for raising and lowering the Easy 13
A method can be adopted in which the force is transmitted to the force and converted into the lifting force of the pushing plate 2.

(d) Binding wire supply unit (FIGS. 1 and 3) On the side of the gate-shaped pedestal 1, a holder 3 for accommodating a group of roughly ∩-shaped binding wires C is arranged. Inside holder 3,
It accommodates a contracted spring 31 and a pressing plate 32 that pushes the group of binding wires C in a direction approaching the pushing plate 2.
The configuration is such that the first one of the group can be continuously supplied on the path of the pushing plate 2.

In addition, for the binding wire C, a publicly known loose wire may be used, or
Alternatively, a ∩-shaped thin plate with many narrow cuts made so as to be separated by the push plate 2 to form independent binding lines C may be housed in the holder 3 and used. Further, the binding wire C is used by pushing back the pressing plate 32 and replenishing it into the holder 3.

(E) Bent portion at the end of the binding wire At the bottom of each support column 11a, 11b, a pin is passed through the bent portion of a pair of approximately L-shaped bending arms 4a, 4b, so that the wire can swing freely. Pivotally supported. Each folding arm 4
Reference numerals a and 4b designate guide members for bending and guiding both ends of the binding wire C into an insertion hole 51 of a rotary table 5, which will be described later. In order to function in this way, a continuous guide groove 41 is provided in the upper surface of the arm piece of each of the bending arms 4a, 4b located inside the portal frame 1. A tension spring 42 is provided between the arm piece on the other end side of each bending arm 4a, 4b and each support 11a, 11b, and a stopper is provided on each support 11a, 11b side to restrict the opening of each bending arm 4a, 4b. 43 will be provided. The stopper 43 is installed at a position where, when both the bending arms 4a, 4b are in a free state, each arm piece on the side having the guide groove 41 is approximately parallel to the supports 11a, 11b. Further, the crossed reinforcing bars to be bound are taken into the portal frame 1 with the bending arms 4a, 4b spread out.

(f) Twisting part of the end of the binding wire (Figs. 2 and 4) A rotatable rotary table 5 is positioned at the bottom of the gate-shaped pedestal 1. The rotary table 5 is a rotating body whose purpose is to twist together both ends of the binding wire C bent by the bending arms 4a and 4b.
A plurality of insertion holes 51 are provided near the center of the rotary table 5 and are sized to allow insertion of both ends of the binding wire C. The formation position and inclination angle of the insertion hole 51 are determined in consideration of smooth introduction of both ends of the binding wire C guided to the guide grooves 41 of both the bending arms 4a, 4b. To give rotation to the rotary table 5, for example, the bracket 1 at the bottom of one of the supports 11a
Rotary table 5 is attached to table holder 6 which is pivoted on 4.
If the rotary motor M2 is also incorporated in the table holder 6, the rotation of the rotary motor M2 can be transmitted to the gear 52 provided on the outer periphery of the rotary table 5, thereby controlling the rotation of the rotary table 5. Alternatively, it is also conceivable to directly connect the rotating shaft of a motor (not shown) to the rotating table 5 to control the rotation of the rotating table 5.

In addition, the tip of the rod 71 of the cylinder 7 that moves up and down is rotatably connected to the arm piece 61 formed at the other end of the table holder 6, so that the table holder 6 incorporating the rotary table 5 can be configured to swing freely. do.

Therefore, when the cylinder 7 is expanded or contracted, the rotary table 5 opens and closes the lower opening of the portal frame 1.

<Action of the present invention> Next, a method of using the reinforcing bar binding device will be explained.

(a) Setting the reinforcing bars (Fig. 5) The cylinder 7 is contracted and the table holder 6 is swung to open the lower part of the gate-shaped pedestal 1. Next, after inserting the crossed reinforcing bars A and B into the portal frame 1, the cylinder 7 is extended and the lower part of the portal frame 1 is closed with the table holder 6.

(b) Pulling out the binding wire (Figures 4 and 6) Next, the lifting motor M1 is operated to lower the push plate 2 toward the intersection of reinforcing bars A and B.

The front-row binding wire C housed in the holder 3 is taken out midway through the descent of the push plate 2 and continues its descent. If the binding wire C is continued to be pushed even after both ends of the binding wire C straddle the intersection of reinforcing bars A and B, both ends of the binding wire C will be inserted into the guide grooves 41 and 41 of each bending arm 4a and 4b. It is guided and bent inward.
When both ends of the binding wire C are bent, the binding wire C
The tips of both ends of are inserted into the insertion holes 51 of the rotary table 5.
will be guided to.

(c) Binding work (Figures 4 and 7) Next, when the rotation motor M2 is activated to rotate the rotary table 5, both ends of the binding wire C are twisted and the intersection of both reinforcing bars A and B is twisted. to bound. Rebar A, B
During the tying operation, both ends of the tying wire C inserted into the insertion hole 51 are twisted so that the length inserted into the insertion hole 51 becomes shorter, and the ends naturally come out.

If the total length of the binding wire C is long, the end of the binding wire C will be pulled out from the insertion hole 51 when the cylinder 7 is contracted and the table holder 6 is opened.

<Effects of the Present Invention> Since the present invention is as described above, the following effects can be expected.

(b) The reinforcing bar binding work, which used to be done manually, can now be done mechanically, making the binding work more efficient and labor-saving.

(b) Variations in the binding condition are eliminated, and a stable binding effect can always be obtained.

(c) Since the device has a simple structure, it is difficult to break down and maintenance is easy.

(d) Since the ends of the binding wires are tied below the intersection of the reinforcing bars, the smooth state of the top surface of the reinforcing bars can be maintained and injuries to workers can be prevented.

(e) The present invention has a structure in which the reinforcing bars can be removed after the reinforcing bars are tied together.

That is, in the present invention, the bending arm and the table holder are swingably supported.

Therefore, after the work of crossing the binding wire to the reinforcing bar is completed, the bending arm and the table holder are opened, so that the reinforcing bar for which the work has been completed can be removed.

Therefore, it is easy to remove the reinforcing bars from the device.

[Brief explanation of drawings]

Figure 1: Overall illustration of reinforcing bar binding device, Figure 2:
Its front view, Fig. 3: its side view, Fig. 4: explanatory diagram of the rotary table, Fig. 5: explanatory diagram when setting reinforcing bars, Fig. 6: explanatory diagram when bending the binding wire, Fig. 7
Figure: Explanatory diagram when restrained by binding wire.

Claims (1)

[Scope of Claims] 1. A gate-shaped pedestal with an open bottom end, a push-in plate for pushing the binding wire provided on the pedestal so as to be able to rise and fall, and a push-in plate facing the push-in plate on the side of the push-in plate. a holder for accommodating a group of bundled wires in an approximately ∩-shape in a closed state, and a plurality of inserts located at the lower end of the gate-shaped pedestal so that the lower ends can be closed and opened, and into which the free ends of the bundled wires can be inserted. It consists of a rotating body with a hole, and a pair of bending arms that are pivoted opposite to the pillars that make up the pedestal directly above the rotating body, and that have guide grooves recessed in their inner surfaces. A reinforcing bar binding device configured to open and close the lower ends of the gate-shaped pedestal by rotating the arm and opening the gate-shaped pedestal.