JPH08277632A - Binding machine for reinforcement mesh - Google Patents

Abstract

PURPOSE: To provide a binding machine constituted into an extremely compact form capable of quickly and surely performing a required binding work. CONSTITUTION: While a rolling body 24 is brought into contact with the flat surface notch part 29 and notched part 30 of a rotating holder 27, a stranded wire A is cut by a blade body 22 through an oscillating arm 21a. A holding body 31 in which the wound stranded wire A is held by a holding hole is gradually retreated according to the increase in the load added to the rotating holder 27 while it is rotated by the rotating holder 27, whereby it is twisted under the pulled state. When the stranded wire A is wound, the rolling body 24 is brought into contact with the flat surface notched part 29 of the rotating holder 27 to surely and stably hold and stop the holding hole surrounded and formed by a pair of holding pieces 32 on the winding track of the stranded wire A.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, as a binding machine of this type, a binding machine previously disclosed by the present inventor (Japanese Patent Laid-Open No. 5-98807) has been known.
This will be described with reference to FIGS. 11 and 12.

That is, in the figure, 51 is a portable casing body having a tubular shape, 52 is a pair of grooved feed rollers internally provided at the rear end of the casing body 51, and 53 is A curved bending member provided at the tip of the casing main body 51,
Reference numeral 54 designates a rotary main shaft that is installed in the casing main body 51 in the longitudinal direction thereof so as to be rotatable forward and reverse through a fixed iron core 55 and a rotor iron core 56, and 57 extends along the center line of the rotary main shaft 54. An insertion hole having a required diameter formed by 58 is a slide blade internally provided at the tip of the insertion hole 57 so as to be engaged by the rotation torque of the rotary main shaft 54, and 59 is wound in a ring shape by the bending member 53. It is a substantially pin-shaped bending member that is provided around the tip of the rotary spindle 54 so as to be positioned on the winding locus of the binding wire A to be protruded.

In the conventional example constructed as described above, the binding roller A is sequentially rotated by the feeding roller 52 while the bending member 59 and the slide blade 58 are operated in conjunction with the rotation operation of the rotating main shaft 54. It is fed into the bending member 53 through the insertion hole 57 and is bent into a curved shape to surround the object B to be bound. Then, while the leading end of the binding wire A is hooked on the bending member 59, the binding operation of the bending member 59 causes the subsequent binding wire A portion to be wound around the base end portion under the surroundings and twisted to bind. At the same time, the binding wire A is cut by the slide blade 58.

In the above-mentioned conventional example, although the object to be bound B such as a reinforcing mesh can be easily bound with an extremely compact structure, the binding line A is cut by the slide blade 58. Not only is it difficult to instantly cut the wire at a timely timing, but also the winding binding wire A is twisted to be bound by the substantially pin-shaped bending member 59, so that it is difficult to bind the object to be bound B sufficiently. Further, since the substantially pin-shaped bending member 59 is merely provided around the tip of the rotary main shaft 54, the bending members 5 adjacent to each other when the binding wire A is hooked.
This has a drawback that it is difficult to reliably position the gap between the winding wires 9 on the winding path of the binding wire A.

In addition to the above-mentioned conventional example, Japanese Patent Publication No. 59-3
The binding machine disclosed in Japanese Patent No. 9027 and Japanese Patent Laid-Open No. 63-191719 is known, but the cutting mechanism and the twisting mechanism of the binding wire are extremely complicated, and their production is very troublesome and troublesome. However, it is not satisfactory in terms of cutting action and twisting action, and it is difficult to expect a sufficient binding effect.

The present invention solves the conventional problems at once.
An object of the present invention is to provide an extremely compact binding machine that can perform the required binding work quickly and reliably.

[0008]

The first invention of the present application is
A feeding device 4 for feeding the binding wire A toward the front end is provided at the rear end portion of the portable casing body 1, and a winding device 5 for sequentially winding the binding wire A fed into the leading end portion in a ring shape. A twisting device 6 that is disposed and that twists while holding the winding binding line A corresponding to the winding device 5 is provided, and
In a binding machine for a reinforcing bar mesh, which is provided with a cutting device 7 for cutting the binding wire A into a predetermined length ahead of the feeding device 4, the cutting device 7 is provided with a blade body 22 at one end and Swing arms 21a and 21b each having a rolling element 24 at its end, and the rolling element 24 biasing member 2
Rotating holder for twisting device that can be contacted via 6-2
7, the blade 22 is disposed so as to be orthogonal to the feeding direction of the binding line A, and a flat surface notch 29 is formed on at least one side of the rotary holder 27, and The swinging arms 21a, 21 while the moving body 24 is in contact with the cutout portion 29 and the cutout portion 30 of the rotary holder 27.
It is configured so that the blade 22 is actuated by cutting through b.

In the second invention of the present application, a feeding device 4 for feeding the binding wire A toward the front end to the rear end portion of the portable casing body 1, and the binding wire A fed to the tip end portion. Winding devices 5 for sequentially winding in a ring shape are provided, and a twisting device 6 for twisting while gripping the winding binding wire A is provided corresponding to the winding device 5, and a feeding device 4 is provided. In the binding machine for a reinforcing bar mesh, which is provided with a cutting device 7 for cutting the binding wire A to a predetermined length, the twisting device 6 of the casing body 1 corresponds to the winding device 5. The rotary holder 27 is provided at the rear end, and the gripper 31 is movably fitted to the front end of the rotary holder 27. The gripper 31 is opened and closed via a biasing member 33. Each gripping piece 32 is composed of a pair of gripping pieces 32 that are freely pivoted. Both ends of the pivot shaft 34 that is pivotally mounted are slidably fitted in slot holes 28 of a required length formed on both sides of the rotary holder 27 along the longitudinal direction thereof, and are surrounded by a pair of gripping pieces 32. The gripping hole 35 is positioned on the winding locus of the binding wire A wound by the winding device 5, and the winding binding wire A is held in the gripping hole 35, and the gripper 31 is held by the rotary holder 27. While rotating the gripping body 31 as the load applied to the rotary holder 27 increases.
Is gradually retracted to cause a twisting operation in a tensioned state.

In the third invention of the present application, a feeding device 4 for feeding the binding wire A toward the front end to the rear end portion of the portable casing body 1 and the binding wire A fed to the tip end portion. Winding devices 5 for sequentially winding in a ring shape are provided, and a twisting device 6 for twisting while gripping the winding binding wire A is provided corresponding to the winding device 5, and a feeding device 4 is provided. In the binding machine for a reinforcing bar mesh, which is provided with a cutting device 7 for cutting the binding wire A to a predetermined length, the twisting device 6 of the casing body 1 corresponds to the winding device 5. A rotary holder 27 having a flat surface notch 29 arranged at the rear end thereof, and a pair of openable and closable gripping pieces 3 movably fitted to the front end of the rotary holder 27.
2 and a rolling body 24 brought into contact with the rotary holder 27 via the biasing member 26,
The rolling member 24 is brought into contact with the notch 29 of the rotary holder 27 so that the gripping hole 35, which is surrounded by the gripping piece 32, is stopped on the winding locus of the binding wire A.

[0011]

The binding device A is sequentially fed to the winding device 5 by the feeding device 4, and is wound in a ring shape while being inserted into the holding hole 35 formed by the pair of holding pieces 32 to surround the object to be bound B. After that, the rotary holder 27 is rotated in a predetermined direction. And the rotation holder-27
The rolling element 24 is brought into contact with the notched portion 30 of the
While cutting the binding wire A into a desired length by the blade 22 via the holes 21a and 21b, and rotating the grip body 31 with the winding binding wire A inserted through the grip hole 35,
When the load applied to the rotary holder 27 increases, the rotary holder 27 is gradually retracted so that the rotary holder 27 is twisted in a tensioned state to bind the objects to be bound B together. When a predetermined amount of load is applied to the rotary holder 27 due to the twisting operation of the grip body 31, the grip piece 32 that constitutes the grip body 31 is biased by the biasing member 33.
Opening against the urging force of the rotary holder 27, the winding binding line A is released, and the rotary holder 27 is stopped to restore the grip body 31 to the original state, and the cutout portion 29 of the rotary holder 27 is formed. The rolling element 24 is brought into contact with and the gripping hole 35 formed by the gripping piece 32 is stopped on the winding locus of the binding wire A.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention shown in the drawings will be described below. Reference numeral 1 is a portable casing body, 2 is a grip portion vertically provided at the lower end of the casing body 1, and 3 is a trigger attached to the grip portion 2. A feeding device 4 is provided at the rear end of the casing body 1 to feed the binding wire A toward the front end. A feeding device 5 is used to sequentially wind the binding wire A fed by the feeding device 4 into a ring shape. A winding device 6 arranged in a protruding shape at the tip of the single body 1, 6
Is a twisting device arranged at the tip of the casing main body 1 to grip and twist the binding wire A wound by the winding device 5,
A cutting device 7 is provided at the front of the feeding device 4 and arranged in the casing body 1 so as to cut the binding wire A into a predetermined length.

Numerals 8 and 9 are a pair of front and rear main feed rollers and sub feed rollers which constitute the feed device 4, and each of the main and sub feed rollers 8 and 9 is a pair of scoring roller members 10. Are arranged so as to face each other, and can be moved toward and away from each other via a biasing spring 11. Reference numeral 12 is a motor connected to one of the roller members 10 constituting the main feed roller 8 via a transmission mechanism 13 such as a gear mechanism, and 14 is a case corresponding to the main feed roller 8. A bundling wire introducing pipe horizontally disposed at the rear end of the singing main body 1, and a bundling wire passage 15 formed toward the front end direction of the casing main body 1 so as to correspond to the slave feed roller 9. is there.

Reference numeral 16 denotes a semi-arcuate bending member which constitutes the winding device 5, 17 denotes a required guide groove formed along the inner peripheral surface of the bending member 16, and the bending member 16 is a mounting member 18. It is attached to the front portion of the casing main body 1 by means of a set screw 19 via a through hole. Reference numeral 20 denotes an insertion hole formed along the longitudinal direction of the attachment member 18 so as to communicate with the binding wire passage 15, and the insertion hole 20 communicates with the guide groove 17 of the bending member 16.

Reference numeral 21a is a swing arm which constitutes the cutting device 7, 22 is a blade body with a cutting hole 23 attached to one end of the swing arm 21a, and 24 is pivotally attached to the other end thereof. In the rolling element, the swing arm 21a makes the blade 22 orthogonal to the feeding direction of the binding line A, and the pin 25 is made to contact the rolling element 24 with the base end portion of the rotary holder 27 described later. It is pivotally attached to the mounting member 18 through the shaft. Reference numeral 26 is an urging spring interposed between the swing arm 21a and the mounting member 18 so as to press the rolling element 24 against the rotary holder 27.

Reference numeral 27 is a cylindrical rotary holder constituting the twisting device 6, 28 is a groove hole formed on both sides of the rotary holder 27 toward the proximal direction from the tip of the rotary holder 27, 29.3.
0 is a rotary holder for contacting the rolling elements 24-2
7 is a flat surface-shaped notch formed on both sides of the base end and a remaining notch.
When the blade 22 comes into contact with the mounting member 18,
The binding wire A is inserted through the insertion hole 20 of
When the rolling element 24 comes into contact with the notched portion 30, the blade 22 is operated downward to cut the binding line A into a push-cut shape by the edge of the cutting hole 23. Reference numeral 31 is a gripping body movably fitted and held at the tip of the rotary holder 27.
1 is composed of a pair of substantially hook-shaped grasping pieces 32 pivotally attached to each other via an urging spring 33, and both ends of a pivot 34 pivotally attaching the grasping pieces 32 are respectively attached to the rotary holder 27. A gripping hole 35 that is slidably fitted in the slot 28 and that is surrounded by a pair of gripping pieces 32.
Means that the rolling element 24 is a notch 29 of the rotary holder 27.
It is supposed that when it touches, it will automatically stop on the winding locus of the binding wire A. Reference numeral 36 is a motor provided in the casing body 1 for rotating the rotary holder 27.
The motor 36 and the feeding motor 12 are configured to be sequentially started and stopped by a trigger 3 via a required controller (not shown).

Next, the operation of the embodiment configured as described above will be described. First, the binding wire A is inserted into the introduction pipe 14, and the tip portion thereof is forcibly inserted into the master-slave feed rollers 8 and 9 against the bias of the bias spring 11. At this time, as shown in FIGS. 5 and 6, the rolling element 24 is brought into contact with the notch 29 of the rotary holder 27. Therefore, the cutting hole 23 of the blade body 22 is communicated with the insertion hole 20 of the mounting member 18, and the gripping hole 35 surrounded by the pair of gripping pieces 32 is positioned on the winding trajectory of the binding line A. ing. After that, when the trigger 3 is pulled, the motor 12 is activated, and while the roller member 10 is being driven, the binding line A is sequentially passed by the master-slave feed rollers 8 and 9 to the passage 15, the insertion hole 20, and the cutting hole 23. Through bending member 16
Is fed into the guide groove 17 and is wound into a ring shape while passing through the gripping hole 35 to surround the object to be bound B (see FIG. 9A). When the surrounding of the object to be bound B is completed, the motor 12 is stopped and the feeding of the binding line A by the feeding device 4 is stopped.

When the motor 12 is stopped, then the motor 3
6 starts to rotate the rotary holder 27 in a predetermined direction. Then, as shown in FIGS. 7 and 8, the rolling element 24, which comes into contact with the notch 29 along with the rotation of the rotary holder 27, gradually comes into contact with the notch 30, and the biasing spring 2 is pressed.
By swinging the swinging arm 21a against the biasing force of 6, the blade body 22 is actuated downward to cut the binding line A through the edge of the cutting hole 23, and the gripping body 3
1 grips the winding binding wire A in its gripping hole 35 and rotates to start a twisting operation to bind the objects to be bound B (FIG. 9).
(See B). At this time, since the pivot shaft 34 is slidably fitted in the slot 28, when a required load is applied to the rotary holder 27 as the gripping body 31 is twisted, the pivot shaft 34 is rotated.
By gradually sliding and retreating along the groove 28, the grasping body 31 is gradually retracted, and twisting operation can be performed under a tensioned state to surely perform the twisting (see FIG. 9C). Then, when a predetermined amount of load is applied to the rotation holder-27, the gripping piece 32 constituting the gripping body 31 is opened against the bias of the biasing member 33, releasing the winding binding line A and returning to the original state. At the same time as returning, the motor 36 stops, and the rolling member 24 is pressed against the notch 29 via the biasing spring 26 to stop the rotation holder 27 from rotating. At this time, due to the pressing contact of the rolling element 24 against the notch 29, the cutting hole 23 of the blade 22 is swung into the swing arm 21.
The gripping hole 35, which is communicated with the insertion hole 20 of the mounting member 18 via a, and which is surrounded by the pair of gripping pieces 32, is positioned on the winding locus of the binding line A.

Similarly, the binding wire A may be fed by the feeding device 4 to bind the required binding object B by the winding device 5, the twisting device 6, and the cutting device 7.

In the above embodiment, the blade 22 is positioned at the tip of the mounting member 18 via the swing arm 21a, but the tie wire A is cut to an economical length. As shown in FIG. 10, the bending member 1 has a swing arm 21b whose front end is curved in a semi-circular shape.
It may be located at the tip of 6. Further, although the feeding device 4 is composed of the master-slave feeding rollers 8 and 9, it is not limited to this, and the main feeding roller 8 is not limited to this.
The rotary holder 27 may have a flat surface-shaped notch 29 on both sides at the base end of the rotary holder 27. The notch 29 is formed on one side surface. It may be formed only.

[0021]

Since the first invention of the present application is configured as described above, the rolling element 24 is shaken while being brought into contact with the flat surface cutout portion 29 and the cutout portion 30 of the rotary holder 27. The binding wire A can be cut and operated by the blade body 22 via the moving arms 21a and 21b.
As compared with the conventional example, the operation of cutting the binding wire A can be performed more quickly, reliably and smoothly.

Further, since the second invention of the present application is constructed as described above, the gripping body 31 which grips the winding binding line A in the gripping hole 35 is rotated while being rotated by the rotary holder 27. The holder 27 can be twisted in a tensioned state by gradually retracting the holder 27 as the load applied to the holder 27 increases. The wire A can be quickly and surely and firmly twisted and bound.

Furthermore, since the third invention of the present application is configured as described above, when the binding wire A is wound,
The rolling element 24 is brought into contact with the flat surface notch 29 of the rotary holder 27, and the gripping hole 35 surrounded by the pair of gripping pieces 32 is reliably and stably provided on the winding locus of the binding line A. It can be stopped and held.

[Brief description of drawings]

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

FIG. 2 is a plan view of the same.

3 is an enlarged cross-sectional view taken along the line I-I of FIG.

FIG. 4 is an exploded perspective view showing a winding device 5 and a cutting device 7.

5 is a partially enlarged cross-sectional view showing a winding state of the binding wire A. FIG.

6 is a sectional view taken along line II-II of FIG.

7 is a partially enlarged cross-sectional view showing a cut state of the binding line A. FIG.

8 is a cross-sectional view taken along the line III-III in FIG.

FIG. 9 is a side view showing each operation state of feeding, winding, cutting, and twisting of the binding wire A.

FIG. 10 is a partially enlarged sectional view showing another embodiment of the present invention.

FIG. 11 is a vertical cross-sectional view showing an operating state of a conventional example.

FIG. 12 is a partial cross-sectional view showing the same operating state.

[Explanation of symbols]

 1 Casing Main Body 4 Feeding Device 5 Winding Device 6 Twisting Device 7 Cutting Device 21a ・ 21b Swing Arm 22 Blade Body 23 Cutting Hole 24 Rolling Body 26 Energizing Spring 27 Rotation Holder-28 Groove Hole 29 Notch Part 30 Notched part 31 Gripping body 32 Gripping piece 33 Energizing spring 34 Pivot axis 35 Gripping hole A Bundling wire B Bundling object

Claims (3)

[Claims] 1. A feeding device 4 for feeding a binding wire A toward a front end of a rear end portion of a portable casing main body 1, and a winding device for winding the fed binding wire A at a front end portion thereof in a ring shape. Each of the winding devices 5 is arranged, a twisting device 6 corresponding to the winding device 5 for twisting while gripping the winding binding wire A is provided, and the binding wire A is provided in front of the feeding device 4. In a reinforced mesh binding machine provided with a cutting device 7 that cuts into a predetermined length, the cutting device 7 has a blade body 22 at one end and a rolling body 24 at the other end. Rocking arms 21a and 21b and the rolling elements 24
Is composed of a rotating holder 27 for a twisting device which is freely contactable via a biasing member 26, the blade body 22 is arranged so as to be orthogonal to the feeding direction of the binding line A, and the rotating holder 27 Flat surface cutout 2 on at least one side
9, the rolling arm 24 is brought into contact with the cutout portion 29 and the cutout portion 30 of the rotary holder 27, and the swing arm 2 is formed.
A binding machine for a reinforcing bar mesh, which is configured to cut and actuate the blade 22 via 1a and 21b. 2. A feeding device 4 for feeding the binding wire A toward the front end at the rear end portion of the portable casing body 1, and a winding device for winding the fed binding wire A at the front end portion in the order of a ring. Each of the winding devices 5 is arranged, a twisting device 6 corresponding to the winding device 5 for twisting while gripping the winding binding wire A is provided, and the binding wire A is provided in front of the feeding device 4. In a binding machine for reinforcing bar mesh, which is provided with a cutting device 7 that cuts into a predetermined length, the twisting device 6 is provided at the rear end of the casing body 1 so as to correspond to the winding device 5. The rotary holder 27 and a grip body 31 movably fitted to the tip of the rotary holder 27.
Is composed of a pair of gripping pieces 32 that are pivotally mounted via an urging member 33 so as to be openable and closable, and both ends of a pivot 34 that pivotally mounts each gripping piece 32 are along the longitudinal direction of the rotary holder 27. The gripping hole 35, which is slidably fitted in the groove hole 28 of a required length formed on both sides of the gripping wire and is surrounded by the pair of gripping pieces 32, has a binding wire A wound by the winding device 5. Is positioned on the winding locus of No. 1, and the winding binding line A is held in the holding hole 35 to rotate the gripping body 31 by the rotary holder 27, and the gripping is performed as the load applied to the rotary holder 27 increases. A binding machine for a reinforcing bar mesh, characterized in that it is configured so as to be twisted in a tension state by gradually moving the body 31 backward. 3. A feeding device 4 for feeding the binding wire A toward the front end at the rear end portion of the portable casing body 1, and a winding device for winding the fed binding wire A at the front end portion in the order of a ring. Each of the winding devices 5 is arranged, a twisting device 6 corresponding to the winding device 5 for twisting while gripping the winding binding wire A is provided, and the binding wire A is provided in front of the feeding device 4. In a binding machine for reinforcing bar mesh, which is provided with a cutting device 7 that cuts into a predetermined length, the twisting device 6 is provided at the rear end of the casing body 1 so as to correspond to the winding device 5. Rotating holder 27 having flat surface notch 29
And a gripping body 31 composed of a pair of gripping pieces 32 movably fitted to the tip of the rotary holder 27 and capable of opening and closing.
And the rolling element 24 that is brought into contact with the rotary holder 27 via the biasing member 26, and the rolling element 24 is brought into contact with the cutout portion 29 of the rotary holder 27 to form a surrounding with the gripping piece 32. A binding machine for a reinforcing bar mesh, which is configured to stop the grasping hole 35 formed on the winding locus of the binding line A.