JPH04201807A - Device for tightening binding wire - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a binding wire tightening tool that twists a portion of a binding wire and tightens the portion to be bound.

(Prior art) For example, when binding intersections of reinforcing bars or assembling scaffolding, binding wire such as grid wire is wound around the points to be bound, cut, and then twisted and tightened. Ru.

Conventionally, these operations have been performed manually using a tool such as a backer.

(Problem to be solved by the invention) However, work using tools such as backers requires skill, and especially when the binding wire is twisted and tightened, the backer becomes difficult to remove and takes time, and there are many binding points. There was a problem in that the tightening work required a lot of time and work efficiency could not be improved.

The present invention has been devised in view of the above circumstances, and an object of the present invention is to be able to twist a binding wire without requiring skill, and to easily remove the binding wire when the binding wire is twisted and tightened. The purpose of the present invention is to provide a binding fastener that can be used.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the binding wire tightening device according to the present invention is provided such that the binding wire fasteners are arranged so that they face each other so as to sandwich the binding wire portion, and the binding wires are disposed in the direction in which the binding wire is displaced when the binding wire is tightened. It is characterized by being composed of a pair of members whose width gradually becomes narrower.

(Function) Since the pair of members are rotated to twist the binding wire portion, the binding wire can be twisted without requiring any skill. Furthermore, since the twisted binding wire is wound in a direction in which the width of the pair of members is narrow, the pair of members can be easily removed from the binding wire after tightening.

(Example) Hereinafter, an example in which a binding wire tightening tool according to the present invention is applied to an automatic binding device will be described.

FIG. 1 shows a schematic front view of the automatic binding device.

Reference numeral 1 denotes an automatic tying device for tying reinforcing bars, and the automatic tying device 1 includes a tying wire feeding section 5 that feeds out the tying wire 3, a tying wire passing section 7 through which the tying wire 3 fed out from the tying wire feeding section 5 passes, It is configured to include a cutter 9 for cutting the binding wire 3 and a binding wire guide 11 which is openable and closable on both sides of the binding wire passage section 7. In this embodiment, the binding wire passage section 7 is used for tightening the binding wire. It corresponds to a tool.

The wire binding part 5 is incorporated into a handle member 13 having a thickness and length that allows it to be grasped.

The binding wire feeding section 5 includes a reel 15 on which the binding wire 3 (number is wound), a guide member 17 that guides the binding wire 3 from the reel 15 to the distal end side of the handle member 13, and a guide member 17.
A pair of feed rollers 19 are provided at the tips of the rollers.

The reel 15 is of a replaceable cartridge type and is housed in a case 21 that can be attached to and detached from the handle member 13.

A cutter 9 for cutting the binding wire 3 is provided in front of the feed roller 19, and the binding wire passage portion 7 is provided in front of the cutter 9.

In the embodiment, the cutter 9 is composed of a movable blade that is movable in a direction perpendicular to the longitudinal direction of the binding wire 3 and a fixed blade. Various methods can be adopted, such as the following.

The wire binding passage section 7 consists of a pair of members facing each other at a predetermined interval.

In the embodiment, as shown in the side view in FIG. 2, the branch pieces 23 made of thin plates face each other, and the width of the tip portion of the branch piece 23 through which the binding wire 3 passes becomes gradually narrower as it reaches the tip. A tapered portion 23A is formed.

A rod 25 is fixed to the base of the branch piece 23, and the rod 25 is housed inside the handle member 13 and connected to a motor 27 for rotating the binding wire passage section.

The wire binding guide 11 has the details 29A on both sides of the wire binding passage section 7.
A pair of guide members 2 arranged to be openable and closable using the fulcrum as a fulcrum.
9, and is formed in a semicircular arc shape that is large enough to surround the area to be bound when closed.

The base of each guide member 29 is formed into a tapered part corresponding to the tapered part 23A, and the inner peripheral part of each guide member 29 has a guide groove 29B for guiding the binding wire 3. However, it is formed in a spiral shape so that the binding wire 3 can be wound three times or more.

In this embodiment, as shown in FIG.
9 is rotated by a roller motor 31, the movable blade constituting the cutter 9 is moved by a movable blade motor 33, and the guide member 29 is opened and closed by a guide member motor 35, and these motors 31, 33. 35 and the motor 27 for rotating the binding wire passage section are connected to a control circuit 37 built into the handle member 13. A switch 39 provided on the handle member 13 is connected to this control circuit 37, and by operating the switch 39, the guide member 29 can be opened and closed, the feed roller 19 can be driven, the movable blade can be moved, and the binding wire passage section 7 can be rotated. The operations are configured to be performed individually or as a series of operations.

Next, the operation will be explained with reference to FIG.

First, as shown in FIGS. 5A and 5B, the automatic bundling device 1 is brought close to the reinforcing bars to be tied with the guide member 29 open.

Next, as shown in FIG. 5(C), the guide member 29 is closed, and the reinforcing bars 41 to be bound are surrounded by the guide member 29.

Next, as shown in FIG. 5(D), the feed roller 19 is driven to let out the binding wire 3.

By letting out this bundle llll3, the bundle wire 3 is attached to the branch piece 2.
3 and is inserted into the guide groove 29B of the guide member 29. Then, the binding wire 3 is guided by the guide groove 29B and wound three times around the reinforcing bar portion 41 to be bound, for example,
As shown in Figure 2, the third layer of binding! When the tip 3A of s3 is inserted into the guide groove 29B, it is detected by a sensor or the like, and the drive of the roller motor 31 is stopped.

Next, as shown in FIG. 5(E), the cutter 9 is driven to cut the binding wire 3.

Next, as shown in FIG. 5(F), the support piece 23 is rotated.

As the branch piece 23 rotates, the portion of the binding wire 3 wound around the reinforcing bar location 41 to be bound is twisted, the diameter of the loop formed by the binding wire 3 is gradually reduced, and the reinforcing bar location 41 is tightened and fixed.

At this time, since the taper part 23A is provided on the branch piece 23, as the part of the binding wire 3 is twisted, the twisted binding wire 3 is wound in the direction in which the width of the tapered part 23A becomes narrower.
After tightening and fixing, the binding wire 3 is smoothly pulled out from the branch piece 23 without getting entangled with the branch piece 23.

In the examples, the case where the present invention is applied to a device for tying reinforcing bars has been explained, but the present invention can also be applied to various places where tying wires are tightened and fixed, such as when assembling formwork materials or scaffolding. It is possible.

(Effects of the Invention) As is clear from the above explanation, according to the present invention, the binding fastener can twist the binding wire without requiring any skill, and can easily remove the binding wire after it has been twisted and tightened. Therefore, the efficiency of the bundling work can be greatly improved, and it is particularly suitable for use in bundling reinforcing bars that have many bundling points.

[Brief explanation of the drawing]

Figure 1 is a schematic front view of the automatic binding device, Figure 2 is a side view of the binding wire passage section, Figure 3 is a sectional view of the guide member, Figure 4 is a diagram of the relationship between various motors, switches, and control circuits. Figure 5 (
A) to (F) are explanatory diagrams of the bundling work performed by the automatic bundling device. In the figure, 1 is an automatic tying device, 3 is a tying wire, 5 is a tying wire feeding section, 7 is a tying wire passing section (tying wire tightening tool), 9
1 is a cutter, 11 is a binding wire guide, and 13 is a handle member. Patent Applicant Fujita Kogyo Co., Ltd. Agent Patent Attorney No. 1) Shigeru Figure 3 Figure 2 Figure 4

Claims (2)

[Claims] (1) A binding wire tightening device that twists a binding wire portion and tightens the binding portion, the binding wire tightening devices facing each other so as to sandwich the binding wire portion, and tightening the binding wire to tighten the binding wire. A binding wire tightening device comprising a pair of members whose width gradually becomes narrower in the direction in which the wire is displaced. (2) The wire binding tool according to claim 1, wherein the pair of members is connected to a driving means for rotating the pair of members.