JP3010353B1 - Reinforcing mesh binding machine - Google Patents

Abstract

An object of the present invention is to not only make it possible to smoothly wind a binding wire, but also to form a butterfly shape with a good appearance of the binding status, and to separate after binding. To provide a binding machine for a reinforcing bar mesh, which can surely perform the binding. SOLUTION: A guide roller 17 for introducing a binding wire is provided in a guide groove 16 of a winding device 5 constituting a binding machine for a reinforcing mesh. The winding device 5 and the twisting device 6
A binding wire guide piece 37 is arranged on the winding locus of the binding wire A between the two. Further, the twisting device 6 has a cylindrical rotary holder 27, and an operating shaft which is movably fitted and hung on the rotary holder 27 and is constantly urged outward through an urging member 31. 29, a pair of torsion pins 32 movably attached to the tip of the operating shaft 29, and formed at the base end of the torsion pins 32 to move the torsion pins 32 and on the outer peripheral surface of the rotary holder 27. It comprises an operating piece 33 that is in contact with it, and a binding wire push-out pin 34 that is attached concentrically to the rotary holder 27 and that can freely project outward through the operating shaft 29.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a binding machine mainly used for binding a reinforcing steel mesh at the time of placing a reinforcing concrete.

[0002]

2. Description of the Related Art Conventionally, as a binding machine of this type, a binding machine disclosed by the present inventor (see Japanese Patent Application Laid-Open No. Hei 5-98807) is known. It will be described based on the following.

That is, in the drawing, reference numeral 51 denotes a portable cylindrical casing main body, 52 denotes a pair of grooved feeding rollers provided in the rear end of the casing main body 51, and 53 denotes a feeding roller. A bending member 54 with a guide groove 60 having a substantially semicircular arc shape provided at the tip end of the casing main body 51 is provided along the longitudinal direction of the casing main body 51 with a fixed core 55 and a rotor core 56 interposed therebetween. Rotating main shaft internally rotatable forward and reverse
Is a through hole having a required diameter formed along the center line of the rotary main shaft 54; 58 is a slide blade provided at the tip of the through hole 57 for engaging with the rotary main shaft 54 by rotating torque; Is a substantially pin-shaped torsion member protrudingly provided at the tip of the rotating main shaft 54 so as to be located on the winding locus of the binding wire A wound in a loop by the bending member 53.

[0004] In the conventional example constructed as described above, the binding wire A is sequentially moved by the feed roller 52 while the torsion member 59 and the slide blade 58 are operated in conjunction with the rotation operation of the rotation main shaft 54. It is sent to the bending member 53 through the insertion hole 57 and is wound in a ring shape to surround the binding object B. Then, while the distal end portion of the binding wire A is hung on the torsion member 59, the subsequent binding wire A portion is wound around the base end portion under the surrounding by the rotation operation of the torsion member 59, and twisted and bound. The binding wire A is cut by the slide blade 58.

[0005]

The above-mentioned prior art can easily bind the object B to be bound, such as a reinforcing mesh, with a very compact structure, but has the following problems. That is, firstly, since the bending member 53 of the binding wire A is merely formed with the semicircular arc-shaped guide groove 60, the smooth introduction of the binding wire A into the guide groove 60 is required. It is difficult for the winding work of the binding wire A to be hindered . Second,
Torsional Ri member 59 are those allowed to tie by twisting the pin required number at the tip of the main spindle 54 is constituted by allowed to peripherally provided, together with allowed to insert hooking the binding wire A to winding. For this reason, it is not only difficult to satisfactorily tie the object B to be tied, but also to make the tying portion exhibit an unsightly deformed ring shape, and to make it difficult for the tying member 59 to be smoothly detached from the torsion member 59.

In addition to the above conventional example, Japanese Patent Publication No. 59-3
No. 9027, JP-A-63-191719, or JP-A-8-277632 proposed by the present inventors.
Is known, but has a problem in winding and bundling of a binding wire as in the above-mentioned conventional example, and it is difficult to exhibit a satisfactory and sufficient binding effect. .

[0007] The present invention solves the conventional problems at once,
Not only can the winding of the binding wire be performed smoothly and reliably, but also the binding state can be reliably formed in a butterfly shape with a good appearance, and the separation after the binding is reliably performed. It is an object of the present invention to provide a binding machine for rebar mesh that can be closed.

[0008]

According to the first aspect of the present invention, a feeding device 4 for feeding a binding wire A to a rear end portion of a portable casing body 1 in a front end direction is provided at the front end portion. Are respectively provided with winding devices 5 for sequentially winding the fed binding wires A in a ring shape, and twisting while hooking the ring-shaped binding wires A wound corresponding to the winding devices 5. In the reinforcing-mesh binding machine in which a twisting device 6 is provided and a cutting device 7 for cutting the binding wire A to a required length is provided in front of the feeding device 4, the winding device 5 is The present invention provides a binding machine for a reinforcing mesh, wherein a binding roller introducing guide roller 17 is provided in a substantially semi-circular guide groove 16 constituting a required bending member 15.

In the binding machine according to the present invention, the binding wire A fed by the feeding device 4 is connected to the guide roller 17.
As a result, the guide wire 16 can be guided in the guide groove 16 and the winding operation of the binding wire A can be performed smoothly and reliably .

The invention according to claim 2 of the present application is based on claim 1
Wherein rebar torsional Ri device 6 constituting the mesh for binding machine the outer circumferential surface Te - a path like the in-cylinder-shaped rotating holder -27, with the movably HamagoKake locked in the rotary holder -27 A substantially cylindrical operating shaft 29 constantly urged outward through an urging member 31, a pair of torsion pins 32 movably attached to the tip of the operating shaft 29, An operating piece 33 formed at the base end of the rotating holder 27 and abutting against the outer peripheral surface of the rotary holder 27, and is mounted concentrically on the rotating holder 27 and protrudes outward through the operating shaft 29. The present invention provides a binding machine for a reinforcing mesh, comprising a binding wire extrusion pin 34 which is made freely.

In the binding machine according to the present invention, the urging member 3
1 urges the operating shaft 29 outward, transmits the rotational torque by frictional force with the rotary holder 27, and rotates the pair of torsion pins 32 on both sides to lock the binding line A. In addition to twisting and binding in a butterfly shape, a predetermined load is applied to the operating shaft 29 by the torsional operation of the torsion pin 32, and the operating shaft 29 is caused to retreat against the urging force of the urging member 31, and in conjunction with this, the operating piece is actuated. 33 is lifted on the outer peripheral surface of the rotary holder 27 and expanded, and the torsion pin 32 is moved inward, while the pushing pin 34 is protruded outward through the operating shaft 29 to remove the binding portion of the binding wire A. It is extruded and released.

[0012]

Embodiments of the present invention will be described below with reference to an embodiment shown in the drawings. Reference numeral 1 denotes a case body which can be freely carried, 2 denotes a grip portion formed obliquely downward at the rear of the case body 1, and 3 denotes a trigger attached to the grip portion 2. -It is formed in a shape. Reference numeral 4 denotes a feeding device provided at the rear end of the casing body 1 for feeding the binding wire A in the distal direction.
Is a winding device protrudingly provided at the tip of the casing body 1 so as to sequentially wind the binding wire A fed by the feeding device 4 in a ring shape. Case 1 for hanging and twisting the binding wire A
A torsion device 7 is disposed at the tip of the feeding device 4 and is a cutting device disposed at the casing body 1 so as to cut the binding wire A to a predetermined length.

Reference numerals 8.9 designate a pair of front and rear main feed rollers and subordinate feed rollers which constitute the feed device 4. The main and subordinate feed rollers 8.9 each include a pair of scored roller members 10. And an urging spring (not shown).
It is configured to be able to approach / separate freely via the. One of the roller members 10 constituting the main feed roller 8 is connected to a required motor (not shown) via a gear mechanism 11. Reference numerals 12 and 13 denote binding pipe introduction pipes respectively attached to the rear end of the casing main body 1 and the lower end of the grip portion 2 so as to correspond to the main feeding roller 8, and 14 denotes a sub feeding roller 9. It is a binding wire passage formed toward the tip end of the casing body 1 to respond.

Reference numeral 15 denotes a semicircular bending member that constitutes the winding device 5, 16 denotes a guide groove of a required shape formed in an arc shape along the inner peripheral surface of the bending member 15, and 17 denotes a binding line A. The guide member 16 is a grooved guide roller which is attached to the binding wire introduction end of the guide groove 16 with a predetermined gap so as to be guided therethrough. The bending member 15 is set by a set screw 19 via an attachment member 18. -It is attached to the tip of the single body 1 in a protruding manner. Reference numeral 20 denotes an insertion hole formed along the longitudinal direction of the mounting member 18 so as to communicate with the binding wire passage 14. The insertion hole 20 is formed at the binding wire introduction end of the guide groove 16 provided with the guide roller 17. It is assumed that it corresponds.

Reference numeral 21 denotes a swinging arm constituting the cutting device 7.
Numeral 22 is a blade with a cutting hole 23 attached to one end of the oscillating arm 21, and 24 is a rolling element pivotally attached to the other end of the oscillating arm 21. The oscillating arm 21 is a blade The rolling element 24 is pivotally connected to the mounting member 18 via a pin 25 so that the rolling element 24 is brought into contact with an eccentric ring-shaped plate cam 36 to be described later. 2
Reference numeral 6 denotes an urging spring interposed between the swing arm 21 and the mounting member 18 so as to press the rolling element 24 against the plate cam 36.

Reference numeral 27 denotes a cylindrical rotary holder constituting the torsion device 6 having a tapered outer peripheral surface, and 28 are formed on both sides of the rotary holder 27 from the distal end toward the base end. Helical guide slot, 29 is a rotary holder-2
A cylindrical operating shaft 30 movably fitted to 7 has guide pins 30 projecting from both sides of a fitting end of the operating shaft 29 so as to be hooked on a guide slot 28 to control a movable range. , 31 are biasing springs interposed between the operating shaft 29 and the rotary holder 27 so as to bias the operating shaft 29 outward, and the operating shaft 29 is rotated by the biasing spring 31.
7, and the rotational torque is transmitted by the frictional force therebetween. Numeral 32 denotes a pair of torsion pins movably provided on both sides of the distal end portion of the operating shaft 29, respectively. The torsion pins 32 are located on the winding locus of the binding wire A. Reference numeral 33 denotes a substantially half-cylindrical operating piece integrally formed at the base end of each torsion pin 32, and each of the operating pieces 33 abuts on the outer peripheral surface of the rotary holder 27 in an externally fitting manner. The torsion pins 32 are moved in opposite directions in conjunction with the movement of the operation shaft 29. Reference numeral 34 denotes a push pin of a required length which is concentrically mounted on the rotary holder 27. The push pin 34 is connected to the operating shaft 2 by the rotary holder 27.
9 and can be projected outward. Reference numeral 35 denotes a motor provided inside the casing body 1 for rotating the rotary holder 27, and reference numeral 36 denotes an eccentric formed integrally with the base end of the rotary holder 27 for contacting the rolling element 24. When the rolling element 24 comes into contact with the outer peripheral surface of the short-diameter portion of the plate cam 36, the cutting hole 23 of the blade body 22 communicates with the insertion hole 20 of the mounting member 18 to insert the binding wire A. At the same time, the blade 22 is
Is operated downward to slip on the edge of the cutting hole 23 and cut the binding wire A in a push-cut shape.

Reference numeral 37 denotes a guide piece disposed on the winding locus of the binding wire A located between the winding device 5 and the torsion device 6, and 38 is formed on the inner peripheral surface of the guide piece 37. An arcuate guide groove 39 is an operating shaft for operating the guide piece 37 so as to be able to move in and out. The operating shaft 39 slides through a biasing spring 41 in a sliding cylinder 40 attached to the casing body 1. It is adapted to be freely fitted and to be caused to move in and out by the operation pin 42. And such a guide piece 37 is
The winding of the binding wire A between the winding device 5 and the torsion device 6 is always guided on an appropriate winding locus, and when the winding is not performed, the winding operation is made to retract so that damage caused by contact with required articles is effectively performed. It is supposed to prevent.

[0018] The following describes the operation of the embodiment constructed as described above. First, connect the binding wire A to the introduction pipe 12
13 and the leading end thereof is forcibly inserted into the master / slave feed rollers 8.9 against the urging of an urging member (not shown). At this time, as shown in FIGS. 1 and 4, the rolling element 24 is brought into contact with the outer peripheral surface of the short diameter portion of the plate cam 36. For this reason, the cutting hole 23 of the blade body 22 is communicated with the insertion hole 20 of the attachment member 18, and the pair of torsion pins 32 and the guide pieces 37 on both sides are respectively positioned on the winding locus of the binding wire A. . Thereafter, when trigger 3 is pulled, the motor (not shown) is activated, and the roller member 1 is activated.
The main and sub-feed rollers 8.9 are rotated in a predetermined direction while driving 0. Then, the binding wire A inserted into the main and sub feed rollers 8.9 is sequentially fed into the guide groove 16 of the bending member 15 through the passage 14, the insertion hole 20, and the cutting hole 23, and the guide roller 17 and the guide piece. While being guided by 37, it is inserted between the torsion pins 32 on both sides and sequentially wound in a ring shape to surround the object to be bound (see FIG. 4). At this time, the binding wire A is securely guided by the guide roller 17 into the guide groove 16 and the guide piece 37 is securely guided by the torsion pin 32, so that the winding can be smoothly and surely performed. I can do it. Then, when the surrounding of the binding object is completed, the motor is stopped and the feeding of the binding wire A by the feeding device 4 is stopped.

When the feeding of the binding wire A is stopped, the motor 35 is started next, and the rotary holder 27 is rotated in a predetermined direction. Then, the plate cam 36 rotates in conjunction with the rotation of the rotary holder 27, and the rolling elements 24 that come into contact with the outer peripheral surface of the shorter diameter portion gradually contact the outer peripheral surface of the longer diameter portion and resist the urging spring 26. By swinging the swing arm 21, the blade body 22 is actuated downward, and the binding wire A to be inserted is slipped to the edge of the cutting hole 23 and cut. On the other hand, in conjunction with the rotation operation of the rotary holder 27, the operating shaft 29
Then, the twisting operation is started by rotating the torsion pins 32 on both sides in a predetermined direction while locking the binding wire A wound in a ring shape, thereby binding the objects to be bound (see FIG. 4). At this time, one end of the torsion pin 32 is hooked inside the wound binding wire A inserted between the torsion pins 32 on both sides, and the other end of the torsion pin is hooked to the outside so that the twisting operation is performed. Can be formed in a regular butterfly shape (see FIGS. 6 and 7).

When a predetermined amount of load is applied to the operating shaft 29 with the progress of the torsional operation by the torsion pins 32, the rotary holder 27 rotates with a constant torque.
The operating shaft 29 is gradually guided toward the base end of the rotary holder 27 against the urging force of the urging spring 31 while being guided by the guide slot 28 via the guide pin 30, and is operated in conjunction with this. The piece 33 also moves backward, rides on the outer peripheral surface of the tapered rotary holder 27, and moves the torsion pins 32 inward. On the other hand, the pushing pin 34 is
9 gradually protrudes outward with the retreat operation, and the torsion pin 3
Push out the butterfly-shaped binding end hooked on 2 and remove it (see FIG. 6 (A)). When the pushing of the binding end is completed, the motor 35 stops operating, the operating shaft 29 and the operating piece 33 are returned to the original state by the urging of the urging spring 31, and the plate cam 36 is short-circuited. The rotating holder 27 is stopped by bringing the rolling element 24 into press contact with the outer peripheral surface of the radial portion via the urging spring 26. At this time, pressing contact of the rolling element 24 with the plate cam 36 causes the blade 22
Of the mounting member 18 through the swing arm 21
The torsion pin 32 is also positioned on the winding locus of the binding wire A.

[0021] Similarly, delivery by the device 4 feeding the binding wire A, the winding apparatus 5, twisting device 6, and may allowed to bind the desired material to be bound with the cutting device 7.

In the above-described embodiment, the two binding wire introduction pipes 12 and 13 in the feeding device 4 are formed. However, the present invention is not limited to this, and the number may be appropriately increased as needed. The guide roller 17 in the winding device 5 is disposed with a predetermined gap between the guide roller 16 and the bottom of the guide groove 16 so as to guide the binding wire A therethrough. It may be implanted at the bottom of the guide groove 16 as much as possible. Further, although the guide piece 37 is disposed so as to be able to protrude and retract on the winding locus of the binding wire A via the operating shaft 39, it may be disposed so as to be able to protrude and retract via a foldable mounting arm. Things.

[0023]

According to the first aspect of the present invention, a binding roller introducing guide roller 17 is provided in a substantially semicircular arc-shaped guide groove 16 of a winding device 5 constituting a reinforcing mesh binding machine. Therefore, the binding wire A fed by the feeding device 4 can be guided by the guide roller 17 into the guide groove 16 so that the winding operation of the binding wire A can be performed smoothly and reliably. There is .

[0024] The invention according to claim 2 of the present application, the twisting device 6 peripheral surface Te is constituting the binding machine for reinforcing bars mesh - a path like the in-cylinder-shaped rotating holder -27, the rotary holder -2
7, a substantially cylindrical operating shaft 29 which is movably fitted to and hung on and is constantly urged outward via an urging member 31;
A pair of torsion pins 32 movably attached to the tip of the operating shaft 29, and a pair of torsion pins 32 formed at the base end of the torsion pin 32 to move the torsion pin 32 and abutting against the outer peripheral surface of the rotary holder 27. And a push-out pin 34 for a binding wire, which is attached concentrically to the rotary holder 27 and protrudes outward through the operating shaft 29, so that the operating shaft is actuated by the biasing member 31. 29 is urged outward to transmit the rotational torque by the frictional force between the rotary holder 27 and the binding wire A portion to be locked by rotating the pair of torsion pins 32 on both sides in a butterfly shape. In addition to the urging force, a predetermined load is applied to the operating shaft 29 by the torsion operation of the torsion pin 32, and the operation shaft 3 is caused to retreat against the urging force of the urging member 31.
3 is mounted on the outer peripheral surface of the rotary holder 27 and expanded, and the torsion pin 32 is moved inward while the operating shaft 2 is moved.
9, the push-out pin 34 is made to protrude outward, so that the binding portion of the binding wire A can be pushed out and detached, so that the binding state can always be reliably performed in a butterfly shape with a good appearance. Not only can it be done, but also it can be reliably separated after binding.

[Brief description of the drawings]

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

FIG. 2 is a longitudinal sectional view showing the feeding device 4.

FIG. 3 is a cross-sectional view showing the feeding device 4.

FIG. 4 is a longitudinal sectional view showing a winding device 5, a twisting device 6, and a cutting device 7.

FIG. 5 is an exploded perspective view showing the winding device 5 and the cutting device 7.

6 is a side view showing an operation state of the twisting device 6. FIG.

FIG. 7 is a perspective view showing a binding state of a binding line A;

FIG. 8 is a longitudinal sectional view showing a conventional example.

FIG. 9 is a cross-sectional view showing the same operating state.

[Explanation of symbols]

 Reference Signs List 1 casing body 4 feeding device 5 winding device 6 torsion device 7 cutting device 15 bending member 16 guide groove 17 guide roller 27 rotation holder 29 operating shaft 31 biasing spring 32 torsion pin 33 operating piece 34 push-out pin 37 guide Piece 38 guide groove A binding wire

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E04G 21/12 105 B25B 25/00 B65B 27/10

Claims (2)

(57) [Claims] 1. A feeding device 4 for feeding a binding wire A in a front end direction to a rear end portion of a portable casing body 1, and a winding device for sequentially winding the fed binding wire A in a ring shape at the front end portion. Each of the winding devices 5 is provided, and a torsion device 6 for twisting while hooking the ring-shaped binding wire A wound corresponding to the winding device 5 is provided. In the binding machine for reinforcing steel mesh provided with a cutting device 7 for cutting the binding wire A to a required length, the winding device 5 has a substantially semi-circular guide groove 16 constituting a required bending member 15. A binding machine for reinforcing bar mesh, characterized in that a binding roller introducing guide roller 17 is provided therein. 2. A binding machine for a reinforcing bar mesh according to claim 1.
The torsion device 6 is a cylindrical rotary holder 27 having a tapered outer peripheral surface. The rotary holder 27 is movably fitted to the rotary holder 27 and is always outwardly moved via a biasing member 31. A pair of torsion pins 32 movably attached to the tip of the operating shaft 29,
An actuating piece 33 formed at the base end of the torsion pin 32 to move the torsion pin 32 and abutted on the outer peripheral surface of the rotary holder 27, is attached concentrically to the rotary holder 27, and is passed through the operating shaft 29. A binding machine for a rebar mesh, comprising: a binding wire push-out pin 34 that can freely project in a direction.