JP2731812B2 - Reinforcing mesh binding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Conventionally, as a binding machine of this type, a binding machine disclosed by the inventor of the present invention (JP-A-5-98807) is known.
This will be described with reference to FIGS.

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 curved bending member provided at the distal end of the casing 51;
Numeral 54 denotes a rotating spindle which is provided inside the casing main body 51 so as to be rotatable forward and backward through a fixed iron core 55 and a rotor iron core 56 along the longitudinal direction thereof, and 57 denotes a center line of the rotating spindle 54. An insertion hole 58 having a required diameter formed in the above manner is a slide blade provided inside the front end of the insertion hole 57 so as to be engaged with the rotating torque of the rotating main shaft 54, and 59 is wound in a loop by the bending member 53. A substantially pin-shaped bending member protrudingly provided at the tip of the rotating main shaft 54 so as to be positioned on the winding locus of the binding wire A to be formed.

In the conventional example constructed as described above, the binding line A is sequentially rotated by the feed roller 52 while the bending member 59 and the slide blade 58 are operated in conjunction with the rotation of the rotary main shaft 54. Through the insertion hole 57, and is bent into a curved shape to surround the object B to be bound. Then, while the distal end portion of the binding wire A is hung on the bending member 59, the subsequent binding wire A portion is wound around the base end portion under the surrounding by the rotation operation of the bending member 59, and the binding portion is twisted and bound. At the same time, the binding wire A is cut by the slide blade 58.

In the above-mentioned conventional example, the object B to be tied such as a reinforcing mesh can be easily tied with an extremely compact structure, but the tie line A is cut by the slide blade 58. Not only is it difficult to instantly cut with good timing, but also the binding object B is not necessarily sufficiently bound because the wound binding wire A is twisted and bound by the substantially pin-shaped bending member 59. Further, since the substantially pin-shaped bending member 59 is merely provided around the tip of the rotary main shaft 54, the bending member 5 adjacent to the bending member 5 when the binding wire A is hooked is provided.
9 has a disadvantage that it is difficult to position the gap between the winding wires 9 on the winding locus of the binding wire A without difficulty.

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

[0007] The present invention solves the conventional problems at once,
An object of the present invention is to provide a very compact binding machine capable of performing required binding work quickly and reliably.

[0008]

Means for Solving the Problems The first invention of the present application is:
A feeding device 4 for feeding the binding wire A in the front end direction to the rear end portion of the portable casing body 1 is provided with a winding device 5 for sequentially winding the fed binding wire A in a ring shape at the front end portion. A torsion device 6 that is disposed and twists while gripping the winding binding wire A corresponding to the winding device 5 is disposed, and
In a binding machine for a rebar mesh in which a cutting device 7 for cutting the binding wire A into a predetermined length is provided at a position ahead of the feeding device 4, the cutting device 7 is provided with a blade 22 at one end and other components. Oscillating arms 21a and 21b each having a rolling element 24 at an end thereof;
Rotary holder 2 for torsion device made free to contact via 6
7, the blade body 22 is disposed so as to be orthogonal to the feeding direction of the binding wire A, and a flat surface cutout portion 29 is formed on at least one side of the rotary holder 27. The swinging arms 21a and 21 contact the moving body 24 with the notch 29 and the notch 30 of the rotary holder 27.
This is configured to cause the blade body 22 to perform a cutting operation via the “b”.

According to a second invention of the present application, a feeding device 4 for feeding a binding wire A to a rear end portion of a portable casing body 1 in a distal direction is provided with a binding wire A fed to the tip portion. A winding device 5 for sequentially winding in a loop is provided, and a torsion device 6 for twisting while gripping the winding binding wire A is provided corresponding to the winding device 5. Is provided with a cutting device 7 for cutting the binding wire A into a predetermined length at the end of the twisting device 6. It comprises a rotating holder 27 provided at the rear end, and a gripper 31 movably fitted to the front end of the rotary holder 27. The gripper 31 is opened and closed via a biasing member 33. Each of the gripping pieces 32 is composed of a pair of gripping pieces 32 freely pivotally connected. Both ends of the pivot shaft 34 to be pivotally fitted are slidably fitted in slots 28 of a required length formed on both sides thereof along the longitudinal direction of the rotary holder 27, and formed by a pair of gripping pieces 32. The gripping hole 35 to be wound is positioned on the winding locus of the binding wire A wound by the winding device 5, and the wound binding wire A is gripped in the gripping hole 35, and the holding body 31 is rotated by the rotating holder 27. Is rotated while the load applied to the rotary holder 27 is increased.
Is gradually retracted so that the torsional operation is performed in a tension state.

According to a third 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 distal direction, and a feeding device 4 for feeding the binding wire A to the tip portion. A winding device 5 for sequentially winding in a loop is provided, and a torsion device 6 for twisting while gripping the winding binding wire A is provided corresponding to the winding device 5. Is provided with a cutting device 7 for cutting the binding wire A into a predetermined length at the end of the twisting device 6. A rotary holder 27 having a flat surface-shaped notch 29 provided at a rear end thereof, and a pair of open / close operable gripping pieces 3 movably fitted to a front end of the rotary holder 27.
2 and a rolling element 24 brought into contact with a rotary holder 27 via an urging member 26,
The rolling element 24 is brought into contact with the notch 29 of the rotary holder 27 so that the gripping hole 35 formed by the gripping piece 32 is stopped on the winding locus of the binding wire A.

[0011]

The binding wire 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 B to be bound. Thereafter, the rotation holder 27 is rotated in a predetermined direction. And the rotary holder 27
The rolling element 24 is brought into contact with the notched portion 30 of
While the binding wire A is cut to a required length by the blade body 22 through the drums 21a and 21b, and the gripping body 31 having the wound binding wire A inserted through the gripping hole 35 is rotated,
As the load applied to the rotary holder 27 increases, the reversing operation is gradually performed, so that the torsion operation is performed in the tension state, and the objects B to be bound are bound. When a predetermined amount of load is applied to the rotary holder 27 by the torsion operation of the gripping body 31, the gripping pieces 32 constituting the gripping body 31 are biased by the urging members 33.
To release the wound binding wire A and stop the rotary holder 27 to return the gripping body 31 to its original state, and to perform the notch 29 of the rotary holder 27. Then, the rolling elements 24 are brought into contact with each other to stop the gripping holes 35 formed by the gripping pieces 32 on the winding locus of the binding wire A.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a portable casing body, 2 denotes a grip portion vertically provided at a lower end of the casing body 1, and 3 denotes a trigger attached to the grip portion 2. Reference numeral 4 denotes a feeding device disposed at the rear end of the casing body 1 for feeding the binding wire A in the distal direction, and reference numeral 5 denotes a casing for sequentially winding the binding wire A sent by the feeding device 4 in a loop. A winding device 6 protrudingly arranged at the tip of the single body 1, 6
Is a twisting device disposed at the tip of the casing body 1 to grip and twist the binding wire A wound by the winding device 5;
Numeral 7 denotes a cutting device which is located in front of the feeding device 4 and is arranged on the casing body 1 so as to cut the binding wire A into a predetermined length.

Reference numerals 8.9 designate a pair of front and rear main feed rollers and subordinate feed rollers which constitute the feeding device 4. Each of the main and subordinate feed rollers 8.9 includes a pair of creased roller members 10 respectively. Are arranged facing each other, and are configured to be able to approach and separate via an urging spring 11. Reference numeral 12 denotes 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. Reference numeral 14 denotes a case corresponding to the main feed roller 8. A binding wire introduction pipe 15 horizontally disposed at the rear end of the singing body 1 is a binding wire passage formed toward the tip end of the casing body 1 so as to correspond to the follow-in roller 9. is there.

Reference numeral 16 denotes a semicircular bending member constituting the winding device 5, reference numeral 17 denotes a guide groove of a required length formed along the inner peripheral surface of the bending member 16, and the bending member 16 is a mounting member 18. And is attached to the front end of the casing 1 in a protruding manner by a set screw 19. 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 15. The insertion hole 20 communicates with the guide groove 17 of the bending member 16.

Reference numeral 21a denotes a swing arm which constitutes the cutting device 7, 22 denotes a blade having a cutting hole 23 attached to one end of the swing arm 21a, and 24 denotes a pivotal arm at the other end. In the rolling element thus formed, the swing arm 21a makes the blade body 22 perpendicular to the feeding direction of the binding wire A, and pushes the pin 25 so that the rolling element 24 comes into contact with the base end of a rotary holder 27 described later. It is pivotally attached to the mounting member 18 via a swingable member. Numeral 26 denotes an urging spring interposed between the swing arm 21a and the mounting member 18 so as to press the rolling element 24 into contact with the rotary holder 27.

Reference numeral 27 denotes a cylindrical rotary holder which constitutes the torsion device 6, reference numeral 28 denotes a slot formed on both sides of the rotary holder 27 from the distal end toward the proximal end, and 29.3.
Reference numeral 0 denotes a rotating holder-2 for bringing the rolling elements 24 into contact with each other.
The rolling element 24 has a notch 2 formed by a flat notch formed opposite to both sides of the base end of No. 7 and the remaining notch.
9, the cutting hole 23 of the blade 22 is attached to the mounting member 18.
Through the binding hole A by communicating with the insertion hole 20 of
When the rolling element 24 comes into contact with the notched portion 30, the blade body 22 operates downward and cuts the binding line A in a push-cut shape by the edge of the cutting hole 23. Reference numeral 31 denotes a gripping body movably fitted and held on the tip of the rotary holder 27.
Reference numeral 1 denotes a pair of substantially hook-shaped gripping pieces 32 pivotally connected to each other via an urging spring 33 so as to be freely opened and closed. A gripping hole 35 slidably fitted in the slot 28 and formed by a pair of gripping pieces 32.
The rolling element 24 is notch 29 of rotary holder 27.
Is automatically stopped on the winding locus of the binding wire A when the contact is made. 36 is a motor provided inside the casing body 1 for rotating the rotation holder 27.
The motor 36 and the motor 12 for feeding are sequentially activated 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 leading end thereof is forcibly inserted into the master-slave feeding rollers 8.9 against the urging of the urging spring 11. At this time, as shown in FIGS. 5 and 6, the rolling elements 24 are brought into contact with the notches 29 of the rotary holder 27. For this reason, 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 formed by the pair of gripping pieces 32 is positioned on the winding locus of the binding wire A. ing. Thereafter, when the trigger 3 is pulled, the motor 12 is activated, and while the roller member 10 is being driven, the binding wire A is successively formed by the main and slave feeding rollers 8.9 to form the passage 15, the insertion hole 20, and the cutting hole 23. Through the bending member 16
And is wound in a ring shape while passing through the gripping hole 35 to surround the object B to be bound (see FIG. 9A). Then, when the surrounding of the binding object B is completed, the motor 12 stops and the feeding of the binding wire A by the feeding device 4 is stopped.

When the motor 12 stops, then the motor 3
6 is activated to rotate the rotation holder 27 in a predetermined direction. Then, as shown in FIGS. 7 and 8, the rolling element 24 that comes into contact with the notch 29 with the rotation of the rotary holder 27 gradually comes into contact with the notch 30 and the urging spring 2.
6, the swinging arm 21a is swung to actuate the blade body 22 downward, thereby cutting the binding wire A inserted at the edge of the cutting hole 23 and simultaneously holding the gripping body 3.
1 rotates the gripping hole 35 while gripping the wound binding wire A to start the twisting operation and bind the binding object B (FIG. 9).
B). At this time, since the pivot 34 is slidably fitted in the slot 28, when a required load is applied to the rotary holder 27 in accordance with the torsion operation of the gripper 31, the pivot 34 is rotated.
By gradually retreating while sliding along the slot 28, the gripping body 31 is gradually retracted, and the torsion operation is performed under the tension state, so that the torsion can be surely performed (see FIG. 9C). When a predetermined amount of load is applied to the rotary holder 27, the gripping pieces 32 constituting the gripping body 31 are opened against the urging of the urging member 33 to release the wound binding wire A to the original shape. At the same time, the motor 36 is stopped, and the rolling element 24 is pressed against the notch 29 via the urging spring 26 so that the rotation of the rotary holder 27 is also stopped. At this time, the cutting hole 23 of the blade body 22 is moved by the swing arm 21 by the pressing contact of the rolling element 24 with the notch 29.
The gripping hole 35 communicated with the insertion hole 20 of the mounting member 18 through a, and is formed on the winding locus of the binding wire A by being surrounded by the pair of gripping pieces 32.

In the same manner, the binding wire A is fed by the feeding device 4, and the required binding object B is preferably bound by the winding device 5, the twisting device 6, and the cutting device 7.

In the above embodiment, the blade body 22 is located at the tip of the mounting member 18 via the swing arm 21a, but the binding line A is cut to an economical length. As shown in FIG. 10, the bending member 1 is formed by a swinging arm 21b having a tip portion curved in a semicircular arc.
6 may be located at the tip. Further, the feeding device 4 is constituted by the master-slave feeding rollers 8.9, but is not limited thereto.
A flat surface-shaped notch 29 is formed on both sides of the base end of the rotary holder 27 so as to face each other, and the notch 29 is formed on one side. Only these may be formed.

[0021]

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

Further, since the second invention of the present application is configured as described above, the gripper 31 having the gripping hole 35 holding the winding binding wire A is rotated by the rotary holder 27 while rotating. The torsion operation can be performed under the tension by gradually retreating with an increase in the load applied to the holder 27. The winding and binding device has a very simple structure as described above as compared with the conventional example. The wire A can be fast and securely and firmly twisted and bound.

Further, 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 cutout portion 29 of the rotary holder 27, and the gripping hole 35 formed by the pair of gripping pieces 32 is reliably and stably placed on the winding locus of the binding wire A. It can stop and hold.

[Brief description of the drawings]

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

FIG. 2 is a plan view of the same.

FIG. 3 is an enlarged sectional view taken along line II of FIG. 2;

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

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

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

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

FIG. 8 is a sectional view taken along the line III-III in FIG. 7;

FIG. 9 is a side view showing respective operating states 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 longitudinal sectional view showing an operation state of a conventional example.

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

[Explanation of symbols]

 DESCRIPTION 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 member 26 Urging spring 27 Rotary holder 28 Slot hole 29 Notch Reference Signs List 30 Notched portion 31 Gripping body 32 Gripping piece 33 Urging spring 34 Axis 35 Gripping hole A Binding wire B Binding object

Claims (3)

(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 twisting device 6 for twisting while gripping the winding binding wire A is provided corresponding to the winding device 5, and a binding wire A is provided in front of the feeding device 4. In a binding machine for a rebar mesh, which is provided with a cutting device 7 for cutting into a predetermined length, the cutting device 7 is provided with a blade body 22 at one end and a rolling element 24 at the other end. Swinging arms 21a and 21b and the rolling elements 24
The blade body 22 is disposed so as to be orthogonal to the feeding direction of the binding wire A. Flat surface notch 2 on at least one side
9 is formed, and while the rolling element 24 is brought into contact with the cutout portion 29 and the cutout portion 30 of the rotary holder 27, the swing arm 2 is formed.
A binding machine for a rebar mesh, which is configured to cause the blade body 22 to perform a cutting operation via 1a and 21b. 2. A feeding device 4 for feeding a binding wire A to a rear end portion of a portable casing body 1 in a distal direction, and a winding device for sequentially winding the fed binding wire A in a ring shape at the tip portion. Each of the winding devices 5 is 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 binding wire A is provided in front of the feeding device 4. In a binding machine for a rebar mesh, which is provided with a cutting device 7 for cutting the wire to a predetermined length, the torsion device 6 is provided at the rear end of the casing body 1 so as to correspond to the winding device 5. A rotating holder 27, and a gripper 31 movably fitted to the tip of the rotary holder 27.
Is constituted by a pair of gripping pieces 32 pivotally attached via a biasing member 33 so as to be openable and closable, and both ends of a pivot 34 for pivotally attaching the respective gripping pieces 32 extend along the longitudinal direction of the rotary holder 27. The gripping holes 35 slidably fitted in the slots 28 of a required length formed on both sides thereof and formed by a pair of gripping pieces 32 form a binding wire A wound by the winding device 5. Is held on the winding locus, and the winding binding wire A is held in the holding hole 35, and the holding body 31 is rotated by the rotating holder 27. A binding machine for a rebar mesh, characterized in that the body 31 is gradually retracted so as to be twisted in a tensioned state. 3. A feeding device 4 for feeding a binding wire A to a rear end portion of a portable casing body 1 in a distal direction, and a winding device for sequentially winding the fed binding wire A in a ring shape at the tip portion. Each of the winding devices 5 is 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 binding wire A is provided in front of the feeding device 4. In a binding machine for a rebar mesh, which is provided with a cutting device 7 for cutting the wire to a predetermined length, the torsion 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 flat notch 29
And a gripping body 31 comprising a pair of gripping pieces 32 movably fitted to the tip of the rotary holder 27 and operable to open and close.
And the rolling element 24 brought into contact with the rotary holder 27 via the urging member 26. The rolling element 24 is brought into contact with the notch 29 of the rotary holder 27 to form the surroundings with the gripping pieces 32. A binding machine for a rebar mesh, wherein the gripping hole 35 to be stopped is stopped on the winding locus of the binding wire A.