JP2580796Y2 - Continuous bending machine for long objects - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a continuous bending of a long object which automatically bends a long object supplied to a predetermined position under a continuous bending operation by a predetermined number of bender heads. Related to the device.

[0002]

2. Description of the Related Art For example, there has been provided a continuous bending apparatus for forming a hoop, a stap, and the like by bending a long object such as a reinforcing bar under a predetermined number of steps of continuous bending.
The continuous bending apparatus usually includes a predetermined number of bender heads having a combination of a center guide such as a center roller and a bending roller rotatable around the center guide, and a reinforcing bar interposed between the center guide and the bending roller. Such a long object is bent in a predetermined direction under the rotation (revolution) of a bending roller with respect to a center guide.

As such a continuous bending apparatus, for example, a three-head type having three bender heads,
The five-head type including five bender heads is generally well known. The three-head type continuous bending apparatus further includes, for example, a slider that conveys a long object in a longitudinal direction of the main frame. The long object is conveyed by the slider, and any one of the bender heads is moved. It is configured to bend a length object at a predetermined position by a specific number.

In addition, a 5-head type continuous bending apparatus usually has no slider, and a long object is hoop-formed by bending using a predetermined five bender heads at a bending target portion of the long object. It is configured to bend into a predetermined shape such as a stirrup.

[0005]

In a three-head type continuous bending apparatus, a slider is usually moved to a position close to a bender head by 90 mm.
Bending of narrow shapes up to the extent possible. But,
On the other hand, particularly when forming a wide hoop, stirrup or the like, the moving distance of the slider is long, so that the moving time of the slider is long. For this reason, it is not easy to quickly process a long object.

On the other hand, according to the five-head type continuous bending apparatus, since a slider does not need to be moved, a long-time object can be easily bent quickly by introducing a time reduction pattern. However, since the width of the bender head is generally the minimum length of one side during bending, the processing of a shape having one side up to about 220 mm is usually limited. For this reason, it is not possible to perform a bending process of a narrow shape like the three-head type, and there is a possibility that the shapes of the hoop and stirrup to be formed are limited.

An object of the present invention is to provide a continuous bending apparatus for a long object capable of performing both narrow shape processing and time reduction.

[0008]

In order to achieve this object, according to the present invention, a slider movable in the longitudinal direction of the main frame is provided along with five bender heads. The slider is arranged on either side of the center bender head of the five bender heads,
The movement is controlled by control means.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, a continuous bending apparatus 10 for a long object according to the present invention includes five bender heads 14 (14-1 to 14-5) juxtaposed in the longitudinal direction of a main frame 12. It is formed as a so-called five-head type. In the 5-head type continuous bending apparatus 10,
The central bender head 14-3 is fixed to the main frame 12, and the other bender heads 14-1, 14-2, 14
-4 and 14-5 can be moved in the longitudinal direction of the main frame.

As can be seen from the bender head 14-1 illustrated in FIGS. 2A and 2B in addition to FIG. 1, the bender heads 14 (14-1 to 14-5) have center rollers and the like. Around the center guide 16 and revolving around the center guide
And a bending roller 18.
The center guide 16 is formed, for example, so as to be able to advance and retreat in its own axial direction. Under the rotation of the bending roller 18 with respect to the center guide after projecting, the center guide, a long object 20 such as a reinforcing bar between the bending rollers is moved. Each of the bender heads 14 (14-1 to 14-5) is configured to bend.

In such a bender head 14,
For example, as shown in FIG. 1, when a slider 22 to be described later is disposed to the right of a central bender head 14-3, bending rollers of the central and left bender heads 14-1 to 14-3 are used.
Reference numeral 18 allows the bender head 14-4, 14-5 on the right side to rotate clockwise with respect to the center guide 16, and counterclockwise.

Incidentally, such a bender head 14 (14-1)
To 14-5) and the basic configuration itself of the 5-head type continuous bending apparatus are not the purpose of the present invention, and therefore detailed description is omitted.

As shown in FIG. 1, the continuous bending apparatus 10 of the present invention has a five-head type structure.
A slider 22 is incorporated.

The slider 22 is formed, for example, with clamping means 22a for holding the long object 20, and is moved in the longitudinal direction of the main frame 12 under the operation of a moving means (not shown) comprising an air cylinder. The clamp means is movably supported. Then, for example, under the control of the control means 24 having a microcomputer (not shown) or the like, the slider 20 moves the long object 20 clamped by the clamp means 22a in the longitudinal direction of the main frame 12 so as to be conveyed. 22 are composed.

The slider 22 is disposed, for example, between a central bender head 14-3 and a bender head 14-4 adjacent on the right side of the bender head. In addition,
Such a slider 22 is known in a three-head type continuous bending apparatus, and its configuration, operating principle, and the like are not in the spirit of the present invention, and therefore, detailed description thereof is omitted.

In the present invention, three bender heads at the center excluding the bender heads 14-1 and 14-5 at both ends are used regardless of the 5-head type continuous bending apparatus.
Under the combination of 14-2 to 14-4 and the slider 22, a three-head type bending operation can be performed. In other words, the continuous bending apparatus 10 of the present invention is configured so that any one of the bending operations can be arbitrarily selected under switch operation or the like by securing both the five-head type and the three-head type bending operations. ing.

The reference numeral 26 shown in FIG.
Is a stopper for positioning a long object by applying one end of the stopper.

For example, the bending operation using the five bender heads 14-1 to 14-5 at the time of forming the hoop, that is, the bending operation with the so-called five heads, is performed as follows.

For example, as shown in FIG. 3, first, the stopper 26 is positioned with respect to the position of the center bender head 14-3, and the left and right bender heads 14-1 and 14-1 are selected according to the shape of the hoop. Position -2, 14-4 and 14-5 respectively. At this time, the bending rollers 18 of the bender heads 14-1 to 14-5 are respectively set at lower initial positions. Here, it is not particularly necessary to clamp the long object 20 by the slider clamping means 22a.

From such a state, the control means 24
First, the bender heads at both ends
14-1 and 14-5 are activated, that is, the bending roller 18 rotates by an angle corresponding to each direction, and the terminal of the long object 20 is
As shown in FIGS. 3 and 4, the hook is bent. When the hook bending of the terminal of the long object 20 is completed, the bending rollers 18 of the bender heads 14-1 and 14-5 are respectively returned to the initial positions, and the center guide 16 of the bender head is placed on the long object. Deported from

The bender head 14 that has been retreated from above the long object 20 is indicated by a cross in the figure.

When the center guides 16 of the bender heads 14-1 and 14-5 at both ends are retreated, the inner bender heads 14-2 and 14-4 are bent in the direction of the arrow in FIG. Roller 18
Are rotated to perform the right-angle bending of the long object 20 at the corresponding location (see FIG. 5).

As shown in FIG. 5, after completion of the right-angle bending of the long object 20, first, the inner bender heads 14-2, 1
The 4-4 bending rollers 18 are returned to the initial positions, and the respective center guides 16 are retreated together.
And then, the bending roller of the central bender head 14-3
Under the rotation of 18, the right-angle bending at the corresponding portion of the long object 20 is performed again, and as shown in FIG.
A hoop having one side length corresponding to the arrangement position of 14-5 is formed.

These five bender heads 14-1 to 14
In the bending operation by -5, the long object
Since there is no transport of 20, a time reduction pattern similar to that of the conventional 5-head type continuous bending apparatus can be introduced. That is, the introduction of the time shortening pattern can ensure the rapid bending of the long object 22 as in the conventional five-head type continuous bending apparatus.

Then, the five bender heads 14-1 to 14-5
Can be particularly effectively used for bending wide hoops and stirrups having a short side of 300 mm or more, for example, as in the conventional five-head type.

For example, the formation of a hoop in a bending operation similar to the three-head type is performed as follows.

In the bending operation of the three-head type, since the bender heads 14-1 and 14-5 at both ends are not used, they are arranged with one end in contact with the stopper 26 as shown in FIG. The bender heads 14-2 and 14-4 on the inner side are arranged at positions corresponding to the elongated object, respectively, while being removed from the elongated object 20 that has been provided.

At this time, the long object 20 is held by the clamp means 22a of the slider.

Then, the hook bending of the end of the long object 20 is performed by the operation of the bender heads 14-2 and 14-4, that is, by the rotation of the bending roller 18 in each direction, FIG. As shown in (2), after the end of the hook bending, the bending rollers are returned to the initial positions, and at least the center guide 16 of the bender head 14-2 is withdrawn from the long object.

Here, in such a three-head type, after the return of the bending roller 18 to the initial position and the retreat of the center guide 16 of the bender head 14-2, for example, the movement of the slider 22 to the right is also required. Then, the long object 20 is transported to a predetermined position.

As shown in FIG. 9, when the long object 20 is conveyed to the position corresponding to the bending position of the bender heads 14-3 and 14-4 under the movement of the slider 22, the next operation is as follows. By rotating the bending rollers 18 of the bender heads 14-3 and 14-4 at the positions, the right-angle bending of the long object at the corresponding locations is performed.

As shown in FIG. 10, the bender head 14-
When the right-angle bending of the long object 20 at 3 and 14-4 is completed, the bending roller 18 of each bender head is returned to the initial position, and the center guide 16 of the bender head 14-4 retreats from the long object. Is done. And the bender head 14-4
After the center guide 16 retreats, the long object 20 is moved by the movement of the slider 22 to the left, and the center bender head 14-3
Is transported until it is positioned at a predetermined location.

As shown in FIG. 11, after setting the position of the long object 20 with respect to the center bender head 14-3, if the corresponding portion is bent at a right angle under the rotation of the corresponding bending roller 18,
As shown in FIG. 12, a hoop having a predetermined shape is formed.

Thus, the three bender heads 14-2 ~
The bending operation of the long object 20 by the combination operation of the slider 14-4 and the slider 22 is the same as the bending operation of the conventional three-head type continuous bending machine, and therefore, the narrow shape having a short side of up to about 90 mm. The processing of the hoop, stirrup and the like can be easily performed.

That is, the five bender heads 14-1 to 14-5
Slider with 5 head type continuous bending machine with
If a bending operation of three-head type can be performed in addition to the bending operation of five-head type, the formation of both narrow and wide hoops, stirrups, and the like by one continuous bending apparatus 10 is provided. , Fully possible.

As described above, a time shortening pattern can be introduced during the bending process as a five-head type using the five bender heads 14-1 to 14-5.
Quick bending of the long object 20 can be easily secured.

Therefore, according to the continuous bending apparatus 10 for long objects of the present invention, the working time, which is an advantage of the five-head type, is reduced, and the hoop, stirrup, etc., which are the advantages of the three-head type, are provided. , Both of which are reliably obtained, and the workability is sufficiently improved.

In the operation of combining the three bender heads 14-2 to 14-4 and the slider 22 in the central part of the present invention, the moving range of the slider is, for example, 90 mm to 300 m.
m, the bending time is sufficiently reduced due to a decrease in the moving distance of the slider.

For this reason, three bender heads 14 in the center are used.
Even during the operation of the three-head type including the combination of -2 to 14-4 and the slider 22, the bending time can be shortened, and the rapid bending of a narrow hoop, stirrup or the like can be sufficiently performed. Therefore, also in this respect, workability in the continuous bending apparatus is improved.

Further, since the moving range of the slider 22 is narrow,
300m as an air cylinder for moving the slider
A general one having a stroke of about m to 400 mm can be sufficiently used, and the cost of the air cylinder itself can be sufficiently suppressed. That is, even if the continuous bending apparatus 10 of the present invention has a configuration in which the slider 22 is added to the five-head type continuous bending apparatus, only a small additional member cost is added to the conventional apparatus. Therefore, the cost does not increase significantly.

In the embodiment, the three bender heads 14-2 to 14-4 at the center are selected from the relation of the length and shape of one side.
During the bending operation of the three-head type by the slider 22 and the bender head 14 in the longitudinal direction of the main frame 12,
-2 and 14-4 have not moved. However, in the continuous bending apparatus 10 of the present invention as well as the conventional three-head type, depending on the shape of the long object 20, the length of one side, etc., in addition to the conveyance of the long object by the slider 22, the bender head
14-2 and 14-4 are movable in the longitudinal direction of the main frame 12.

Here, the air cylinder is a slider.
Although it is embodied as a moving means of 22, it is sufficient that the slider can be moved in the longitudinal direction of the main frame 12, and is not limited thereto.For example, a lead screw linked to a motor, and a lead screw A configuration in which the slider is moved under a combination with a nut that advances and retreats may be used.

However, if an air cylinder is provided as a means for moving the slider 22, it is possible to reliably prevent the structure from becoming complicated and the number of parts from increasing.

Further, in the embodiment, the slider 22 is exemplified as a structure which can be automatically operated by an air cylinder or the like, but is not limited to this. For example, the slider 22 can be manually moved. May be configured.

Further, a reinforcing bar is illustrated as the long object 20, but the present invention is not limited to this. For example, even if an iron pipe or the like is provided instead of a reinforcing bar, the same operation is performed to obtain a predetermined shape. It goes without saying that it can be bent.

The embodiment described above is for explaining the present invention, and does not limit the present invention in any way.
It goes without saying that all modifications and alterations within the technical scope of the present invention are included in the present invention.

[0048]

As described above, according to the continuous bending apparatus for a long object according to the present invention, both the five-head type and the three-head type bending operation can be arbitrarily selected. Therefore, it is possible to effectively use only the advantages of the 5-head type and 3-head type continuous bending apparatus, and to reduce the time required for bending the wide and narrow hoops, staps, etc., and for bending. Both can be secured, and the workability at the time of bending a long object is sufficiently improved.

Since the moving range of the slider is narrow and the moving distance of the slider is short, the bending time of the three-head type can be sufficiently reduced without introducing a time reduction pattern. Therefore, the central part 3
Even at the time of bending with a combination of one bender head and a slider, bending of a long object can be performed quickly.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a continuous bending apparatus for a long object according to the present invention, partially broken.

FIG. 2 is a schematic front view and a schematic left side view of a bender head mainly showing movement of a bending roller during bending.

FIG. 3 is a schematic operation view of a continuous bending apparatus for a long object in bending a hoop with a five-head type.

FIG. 4 is a schematic operation diagram of a continuous bending apparatus for a long object in bending a hoop with a five-head type.

FIG. 5 is a schematic operation diagram of a continuous bending apparatus for a long object in bending a hoop with a five-head type.

FIG. 6 is a schematic operation diagram of a continuous bending apparatus for a long object in bending a hoop with a 5-head type.

FIG. 7 is a schematic operation view of a continuous bending apparatus for a long object in bending a hoop by a three-head type.

FIG. 8 is a schematic operation diagram of a continuous bending apparatus for a long object in bending a hoop with a three-head type.

FIG. 9 is a schematic operation diagram of a continuous bending apparatus for a long object in bending a hoop with a three-head type.

FIG. 10 is a schematic operation view of a continuous bending apparatus for a long object in bending a hoop with a three-head type.

FIG. 11 is a schematic operation view of a continuous bending apparatus for a long object in bending a hoop by a three-head type.

FIG. 12 is a schematic operation diagram of a continuous bending apparatus for a long object in bending a hoop by a three-head type.

[Explanation of symbols]

 10 Continuous bending machine for long objects 12 Main frame 14 (14-1 to 14-5) Bender head 16 Center guide 18 Bending roller 20 Long object 22 Slider 22a Clamping means 24 Control means 26 Stopper

Claims (1)

(57) [Scope of request for utility model registration] 1. A combination comprising: a center guide capable of moving back and forth in its own axial direction; and a bending roller for bending a long object in a vertical direction while rotating around the center guide. The five bender heads are arranged side by side in the longitudinal direction of the main frame away from each other, and under the control of the operation of each bender head by the control means, the long object is continuously bent. In the continuous bending apparatus, a slider which has a clamp means for holding a long object and which can convey the long object in the longitudinal direction of the main frame under the control of movement by the control means comprises a slider among the five bender heads. A continuous bending apparatus for a long object, which is disposed on one of the left and right sides of a bender head located at the center of the bender.