JP2001098763A - Crossed-reinforcement binding tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a crossed-reinforcement binding tool to certainly bind a crossed-reinforcement without requiring skill and to bind the lower part of the crossed-reinforcement which is not conventionally done. SOLUTION: This crossed-reinforcement binding tool is constituted to be capable of stamping out a binding wire rod 4 and elevating a main body 1 and a lower arm 7 by one operation of a handle A as the binding wire rod 4 takes the same shape as to half rotate simultaneously when it is stamped out as it has a means to stamp out the binding wire rod 4 by a projected piece 5 provided with a U shaped cutout and a magazine 3 accumulating the binding wire rod 4 and a mechanism to twist the stamped out binding wire rod 4 is made a groove 8c and a groove 8D.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cross-rebar tying tool used for bundling cross-rebars mainly used in construction work and the like.

[0002]

2. Description of the Related Art Conventionally, when assembling and bundling crossed rebars, a thin, flattened wire is used, and a tool called a hacker with a hook-like tip is used. A clip that can be opened and closed with a pin is fitted, or an S-shaped fixing bracket is fitted into a reinforcing bar. For the bundling operation using an electric tool, there is also a tool that opens the tip of the tool, stores the tightened wire in the rear part, stores the wire in the drum, turns the inside of the opening a predetermined number of times, drives the torsion mechanism, and binds the wire. .

[0003]

However, this method requires a great deal of labor, the rebar tightening operation requires an experienced and skilled technique, and the tools are very expensive in power. .

[0004] Reinforcing bars with fixing brackets and the like can only be fixed to a fixed size. In addition, depending on the installation condition of the deformed bar of the reinforcing bar, if the fixing dimensions are incorrect and do not conform to the dimensions of the metal fittings, the fixing is defective. In some cases, it occurred or could not be fixed. There was a possibility that a stable bundling operation could not be performed without skill in a mint operation. When working with a power tool, the twisted end of the binding wire is long at least 5 to 6 centimeters, so there is a danger that the end will stumbl when walking on rebar at the time of concrete casting. there were. There is surprisingly little bundling with the binding wire built into the drum. For this reason, it is troublesome to attach and detach the drum containing the wire and to insert the thin soft wire into the winding mechanism.

[0005]

[Means for Solving the Problems]

The present invention provides a device for driving a tie wire, a device for twisting the lower side of a crossed reinforcing bar, and a device for driving a tie wire and simultaneously forming a shape similar to a half-turn twist. The object has been solved by providing a binding tool. As a technique for binding under crossed reinforcing bars, there is an embodiment of a binding tool for crossed reinforcing bars filed by Oko on February 10, 1999, which is provided with improvements.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to an embodiment shown in FIG. 3, the present invention is proposed to solve the above-mentioned problem, and an embodiment of the present invention will be described.

[0008] The cross-rebar tying tool according to the present invention is formed in a stapler shape, and a projection piece 5 for punching a tying wire 4 hanging down from the lower end of the main body 1 has a U-shaped cut-out end. A leaf spring is mounted on the hinge 6 so as to be able to swing back and forth and pushes the projection 5 forward inside the projection 5, and the magazine 3 is a rectangular box-shaped housing a large number of U-shaped binding wires 4. is there.

At the lower end of one end of the magazine 3, a guide portion 10 for guiding the binding wire 4 is formed with a notch similar to the shape of the projecting piece 5, and within the guide portion 10, the binding wire 4 and the projecting piece are formed. There is also an advantage that the notch of the guide portion 10 is easily provided at random even when the tying tool is applied to the crossed rebar having a space through which the wire 5 can pass.

The base of the lower arm 7 and the base of the main body 1 and the magazine 3 are pivotally supported respectively, and a sprocket gear AA is supported at the front end of the lower arm 7 and a sprocket gear B is supported at the rear end thereof. It is connected with.

On the horizontal center line of the sprocket gear AA, grooves 8C and 8D are provided with a partition 9A interposed therebetween. When the projecting piece 5 strikes out the binding wire 4, both sides of the cutout of the projecting piece 5 are bound by the binding wire 4. When the binding wire 4 hits the reinforcing bar and fits into the U-shaped notch of the projecting piece 5, the projecting piece 5 goes down to the lower side of the reinforcing bar and binds when the resistance of the reinforcing bar is eliminated. The ends of the wire 4 cross right and left. From the thickness of the binding wire 4 with the partition wall 9A interposed therebetween so as not to hinder the action, a straight line is formed from the thickness of the elongated wire 8C and the center of the groove 8D, which is slightly wider, and is slightly curved outwardly from the straight line. The groove 8C and the groove 8 are provided so that the end of the binding wire 4 can be easily inserted.
The outer end of D has a conical shape.

At a predetermined position of the magazine 3, the center of the rod 11A and the rod 11B in the longitudinal direction is pivotally supported by a shaft pin, the upper end extends obliquely upward at the rear, and the lower end extends obliquely toward the front. Using a pin, the roller 12 and the roller 13 are brought into contact with the lower edge of the
1B, a small piece having a small hole for fixing the coil spring is loosely fitted in the gap between the rollers 12 and 13 at the center of the roller 12 and the roller 13, one end of the coil spring is fitted into the small hole, and one end is locked near the front end of the main body 1. I have.

The sprocket gear AA is sunk under the crossed rebar, and the guide portion 10 is placed on the crossed rebar.
Is pressed down, the rollers 12 and 13 provided on the rods 11A and 11B are pushed by the lower edge of the main body 1, and
The roller 12 and the roller 13 move rearward while sliding on the lower edge surface of the main body 1, and at the same time, the roller 16 pulls up the hook-shaped pin 17 provided on the lower arm 7 to cross the rebar and guide the sprocket gear AA and the guide portion 10 of the magazine 3. Between.

With the simultaneous lowering of the projecting piece 5, the upper end of the binding wire 4 is pushed down by both ends of the projecting piece 5 and descends, and both ends of the binding wire 4 are inserted into the conical holes at both ends of the grooves 8C and 8D. Is done.

However, even if the binding wire 4 is stopped by the rebar, the protruding piece 5 continues to descend, and since the binding wire 4 is stopped from lowering by the rebar, the U-shaped notch of the protruding piece 5 is formed. Since the protrusion 5 descends while being fitted in the groove, the corners of the binding wire 4 formed in a U-shape are elongated, and the ends of the binding wire 4 move outward in the grooves 8C and 8D, respectively, and move about 90 °. Cross right and left.

When the projecting piece 5 reaches the bottom dead center, the handle A is held down while the handle B is turned in a predetermined direction, and the sprocket gear B connected by a chain rotates the sprocket gear AA to twist the end of the binding wire 4. Tie the underside of the crossed bars.

The terminal of the twisted binding wire 4 is a handle A
The sprocket gear AA is pushed down by the size of the torsion along with the torsion.

When the handle B is turned a predetermined number of times, the binding of the rebar is completed, and when the handle A is lifted slightly, the rod is moved toward the handle A by the action of a spring locked on a small piece provided between the main body 1 and the rollers 12 and 13. When the rod 11A and the rod 11B are pulled, the roller 16 pushes down the upper surface of the lower arm 7 to pull out the binding wire 4 from the grooves 8C and 8D, so that the next binding operation can be performed.

In the main body 1 opened upward, the pins 14 are fitted into the recesses 15 provided at the upper ends of the rods 11A and 11B, and the projection pieces 5 come off the magazine 3 to raise the front end of the magazine 3. There is nothing together with that.

In the case of replenishing the binding wire 4, the rod 11A
When the fitting of the pin 14 and the recess 15 provided in the rod 11B is pressed down by removing the tips of the rods 11A and 11B, and the main body 1 is opened, the work can be performed without troublesome replenishment of the binding wire 4. .

If the protruding piece 5 is fixed and long, there is a drawback that the binding wire 4 is difficult to be punched out. However, in the present invention, since the hinge 6 is swingably attached, the binding wire 4 is punched out long by the action of the hinge 6. Since the protruding piece 5 also follows the trajectory of the swing of the main body 1, the binding wire 4 can be punched out with little frictional resistance and labor saving.

When the main body 1 is opened upward after the binding of the crossed reinforcing bars is finished, if the projecting piece 5 is made to swing freely, it will swing forward and come off from the upper surface in contact with the binding wire 4, and the next binding wire 4 A leaf spring for preventing this is attached to the end of the main body 1 and the curved tip is attached to the protrusion 5.
The magazine 3 of the projection piece 5 against the hinge 6
From coming off.

According to the present invention having the above-described structure, even a beginner who has no experience can easily and quickly perform continuous punching of a tie wire and tying of a crossed reinforcing bar. Moreover, there is no need to take into account the thickness of the reinforcing bars, and the function of binding under the crossed reinforcing bars, which has been considered impossible in the past, allows workers to move on the reinforcing bars when casting concrete. This eliminates the risk of stumbling, unlike the above case. Since the groove for inserting the binding wire is divided into two with the partition wall interposed therebetween, the tips of the binding wire intersect when the binding wire is punched out. When the binding wire is hit with the projecting piece, when the binding wire hits the crossing rebar as it launches, the binding wire stops descending, fits into the U-shaped notch of the projecting piece and embraces the crossing rebar, and End moves right and left through the two grooves of the sprocket gear. The original shape of the binding wire is a U-shape, but the 90-degree angle of the U-shape disappears due to the action of the binding wire fitting into the U-shaped cutout of the projection piece, and the terminal becomes a straight terminal. . In the method of inserting both ends of the binding wire into independent holes, the wider the width of the U-shaped binding wire is, the more the binding wire is damaged by the upper edge of the groove when crossing the binding wire by half turn during the binding work. Violently, sometimes the binding wire may break apart. The above-mentioned problem can be solved because the projection piece having the U-shaped notch and the insertion hole of the binding wire are formed into two long grooves, and the effect of punching the binding wire with the wider binding wire becomes easier. Have been. If a wide binding wire is punched out, the middle will be blocked by the rebar and the binding wire will stop, but at this time, the wider the binding wire is, the more easily the upper surface of the binding wire is bent by the leverage. Moreover, it is easier to use a binding tool having a wider width than a bulky binding tool. The labor is much reduced as compared to the case where the binding wire is punched out with a plate-like projection, and the crossed shape at the time of punching has the same effect as a half-turn twist. The use of a wide binding wire inevitably widened the guide portion, and thus facilitated the application of the binding tool to the cross-bar. Because of its simple configuration, it is easy to use, has few failures, and has the effect of reducing costs.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cross-rebar tying tool showing an embodiment of the present invention.

FIG. 2 shows an embodiment of the present invention, a sprocket gear A.
Is a magnified perspective view in which a binding wire is inserted into the terminal, the binding wire 4 embraces a reinforcing bar, and the terminals cross right and left.

FIG. 3 is a perspective view of a cross-rebar tying tool equipped with a rod 11A and a rod 11B that pivotally support a sprocket gear AA of the present invention and perform a pull-up and a push-down action.

FIG. 4 is a front view of the sprocket gear AA of the present invention.

FIG. 5 is a perspective view of the crossed reinforcing bar binding tool of the present invention obtained by binding the lower side of the crossed reinforcing bars.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Arm end part 3 Magazine 4 Binding wire 5 Projection piece 6 Butterfly plate 7 Lower arm 8A groove 8B groove 8C groove 8D groove 9 Partition 9A Partition 10 Guide part 11A Rod 11B Rod 12 Roller 13 Roller 14 Concave 15 Pin 16 Roller 17 Hook pin A Sprocket gear B Sprocket gear AA Sprocket gear

Claims (3)

[Claims] 1. A handle A is provided at an arm end 2 of a stapler-shaped main body 1 so that a U-shaped binding wire 4 protrudes from a magazine 3 when the main body 1 is clamped. It has a U-shaped notch, is pivotally supported by the hinge end 6 at the arm end 2, and the tip of the protruding piece 5 is attached to the upper end of the binding wire 4 in the contact magazine 3. A sprocket gear A is provided on the lower arm 7 extending on the center line with the center line as an axis, a chain is mounted on the sprocket gear A and the rear sprocket gear B, and a drive shaft is erected at the center of the sprocket gear B, A handle B is provided at the tip of the drive shaft so as to be freely rotatable. Grooves 8A and 8B into which the ends of the binding wire 4 are inserted when the binding wire 4 is pushed out are engraved in the lateral direction on the center line of the sprocket gear A. Groove 8A and groove 8 engraved in parallel The partition wall 9 is provided on the transverse center line of,
The guide portion 10 having a gap in which the binding wire 4 descends while sliding the binding wire 4 at the lower end of the magazine 3 has a U-shaped notch that also facilitates the insertion of the cross reinforcing bar, and binds the lower portion of the cross reinforcing bar. A cross-rebar tying tool characterized in that: 2. The sprocket gear AA corresponding to the sprocket gear A in the reinforcing bar binding tool according to claim 1.
The grooves 8C and 8D are engraved from both ends of the sprocket gear AA toward the center to the center of the center line of the sprocket gear AA, and the ends of the grooves 8C and 8D are bent outward from a predetermined position so as to be in a predetermined position. The sprocket gear for a cross-rebar tying tool according to claim 1, wherein a partition wall 9A is provided between the groove 8C and the groove 8D. 3. A rod 11A and a rod 11B for holding the magazine 3 are axially supported by a center pin in a longitudinal direction and a required portion of the magazine 3 by a shaft pin. 11A and near the upper end of the rod 11B, rotatably supported by a shaft pin, abutted on the lower edge of the main body 1, and a roller 16 is supported on the lower end of the rod 11A and the rod 11B by a cross shaft pin. The main body 1 is sunk under the hook-shaped pin 17 provided at an appropriate position on the lower arm 7.
4. The push-down and pull-up rod according to claim 3, wherein the lower arm and the lower arm are moved up and down with the movement of the handle.