JP2001058235A - Reinforcing bar bending device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To further efficiently bend a reinforcing bar into an annular shape. SOLUTION: Relating to the reinforcing bar bending device that a support part to support a reinforcing bar 1 to be bent in a reinforcing bar arrangement space is arranged, a bend support point part to act as a bend support point in bending the reinforcing bar and a bending force application point part 7 to apply the bending force to the reinforcing bar in bending the reinforcing bar, are arranged across the reinforcing bar arrangement space, to move the bending force application point part 7 around the bending support point part 6, so that the reinforcing bar 1 is freely bendable at an abutting part on the bend support point part 6 by the bending action to apply the bending force to the reinforcing bar 1 arranged in the reinforcing bar arrangement space, it is provided with a bending means 20 to bend the reinforcing bar 1 so that an imaginary plane K including the moving locus of a bend end part S11 of the reinforcing bar 1 moving around the bend support point 6 accompanying the bending action is intersected at a specified angle with the axis J4 of a reinforcing bar body S12 supported by a support part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bending fulcrum which serves as a bending fulcrum during a bending operation of a reinforcing member by providing a supporting portion for supporting a reinforcing member (for example, a reinforcing bar or a reinforcing bar network) in a reinforcing member arrangement space. And a bending force point portion for applying a bending force to the reinforcing member at the time of the bending operation of the reinforcing member is provided with the reinforcing member arrangement space interposed therebetween, and the bending force point portion is moved around the bending fulcrum portion to thereby provide the reinforcing member. The present invention relates to a reinforcing bar bending device that can bend at a portion where the reinforcing bar is in contact with the bending fulcrum portion by a bending operation of applying a bending force to the reinforcing bar disposed in the placement space.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 16, a supporting portion 2C for holding and supporting a reinforcing bar (corresponding to a reinforcing bar 1) 30 in a reinforcing bar placement space V is provided as a rebar bending device of this type, as shown in FIG.
A fulcrum axis (corresponding to a bending fulcrum portion) 31 serving as a bending fulcrum during the rebar bending operation, and a power point axis (corresponding to the bending force point portion) 32 for applying a bending force to the rebar 30 during the rebar bending operation, are arranged in the reinforcing bar body. Reinforcing bar bent portions 3 and 4 arranged so as to sandwich the space V are provided so as to be freely displaceable in the longitudinal direction of the reinforcing bar 30, and the fulcrum shaft 31 and the force point shaft 32 are both arranged in parallel with each other. , Each axis is the reinforcing bar 3
When the reinforcing point shaft 32 is rotated around the fulcrum axis 31 and the reinforcing bar is turned back to about 180 degrees, for example, the bent end portion 30a of the reinforcing bar 30 is formed. 16 was bent so as to be in contact with the rebar main body 30b supported by the support portion 2C (FIG. 16).
(C)).

[0003]

When a reinforcing bar is bent to a target angle, it is necessary to perform a bending operation to an angle slightly larger than the target angle in consideration of the "return" of the reinforcing bar generated after releasing the bending force. Generally, according to the above-described conventional reinforcing bar bending apparatus, for example, when bending some parts of the reinforcing bar into a ring shape, such as a stirrup bar or a hoop bar, When bending the part, the ends of the reinforcing bars come into contact with each other and interfere with each other, and if a bending force is applied further, the other parts of the reinforcing bars will be distorted, making it difficult to bend into a predetermined ring shape. was there. Also,
In order to solve the problem, when bending the last part, it is necessary to operate the ends of the reinforcing bars so as not to interfere with each other by, for example, shifting the ends of the reinforcing bar in the ring axis direction of the bending ring. Extra work was required. In addition, such a shifting operation of the end of the reinforcing bar may be performed by bending a plurality of reinforcing bars in a bundled state or by combining a plurality of vertical reinforcing bars and a plurality of horizontal reinforcing bars in an intersecting state. In the case of bending at once into a tubular shape, it takes more time and effort, and a larger displacement force is required, leading to a reduction in the efficiency of the bending operation of the reinforcing bar.

[0004] Accordingly, an object of the present invention is to solve the above-mentioned problems and to provide a rebar-body bending apparatus that can work more efficiently when bending a rebar in an annular shape.

[0005]

According to a feature of the present invention, as shown in FIGS. 11 and 15, a supporting portion 2C for supporting a reinforcing member 1 to be bent in a reinforcing member arrangement space V is provided.
A bending fulcrum portion 6 serving as a bending fulcrum during a reinforced body bending operation, and a bending force point portion 7 for applying a bending force to the reinforced body 1 during a reinforced body bending operation are provided with the reinforced body arrangement space V interposed therebetween;
The bending fulcrum 7 is moved around the bending fulcrum 6 to apply a bending force to the reinforced body 1 disposed in the reinforced body placement space V, thereby bending the reinforced body 1 to the bending fulcrum. In the bending apparatus for bending a reinforcing member at a contact portion with the bending support 6, the bending fulcrum 6
The reinforcing bar is placed in a state where a virtual plane K including a movement locus of the bent end portion S11 of the reinforcing bar 1 moving around at an angle to the reinforcing bar axis J4 of the reinforcing bar main body S12 supported by the support 2C. There is provided a bending means 20 for bending the body 1.

According to the characteristic configuration of the first aspect of the present invention, when the bending operation is performed by the bending means, an imaginary plane including the movement locus of the bending end of the reinforcing bar moving around the bending fulcrum is formed. The rebar body can be bent so as to intersect at an angle with the rebar axis of the rebar body body supported by the support portion. That is, even if the bending angle is increased and the folded state is reached (the bending angle becomes about 180 degrees), the bent end portion of the reinforcing member does not contact the reinforcing member body supported by the support portion. So, for example,
Even when bending some parts of the reinforced body like a stirrup or hoop to bend into a ring shape, when the last part is bent, the ends of the reinforced body The position is shifted in the axial direction, and mutual interference can be prevented. As a result, even if the bending operation is performed to an angle larger than a predetermined angle (an angle at which the ends of the reinforcing members overlap) in consideration of the "return" of the reinforcing members, the ends do not interfere with each other, and It is possible to bend the reinforcing bar into a ring shape in a state where the reinforcing bar shape is not distorted due to the contact between them. In addition, unlike the conventional case, when bending the last portion, it is not necessary to shift the ends of the reinforcing bars in the direction of the axis of the bending ring so as not to interfere with each other. Can be implemented.

As shown in FIG. 6, the characteristic structure of the second aspect of the present invention is that the bending means 20 includes the reinforcing member main body S1.
The bending force point 7 is formed so that the rotation axis J3 of the bending force point 7 is inclined with respect to an orthogonal axis J5 orthogonal to the second reinforcing bar axis J4.
According to the characteristic configuration of the second aspect of the invention, in addition to the effect of the first aspect of the invention, the rotation axis of the bending force point portion is perpendicular to the rebar axis of the rebar body. With a simple configuration that only inclines with respect to the orthogonal axis, the function and effect according to the first aspect of the invention can be achieved, and the function can be improved while suppressing an increase in cost.

[0008] The characteristic structure of the third aspect of the present invention is shown in Figs.
As illustrated in FIG. 1, the reinforcing bar 1 includes a plurality of vertical reinforcing bars S1.
And a plurality of horizontal rebars S2 in a crossed state, and are integrated, and are provided with bending fulcrum portions 6 and bending force point portions 7 corresponding to the respective vertical rebars S1. There. According to the characteristic configuration of the third aspect of the invention, in addition to the effect of the first or second aspect of the invention, the bending operation of a plurality of the vertical reinforcing bars can be performed at one time. Bending work can be performed more efficiently than when each bending bar is bent at a predetermined pitch. And, in the bent rebar network, the vertical rebars are maintained at intervals by the horizontal rebars, so that the vertical rebar pitch can be prevented from being carelessly changed at the time of handling, and the handling property can be improved. .

A feature of the invention according to claim 4 is that, as illustrated in FIG. 1, a pair of reinforcing bar bending portions 3 and 4 including the bending fulcrum 6 and the bending force point 7 is connected to the reinforcing bar body. The arrangement space V is provided so as to be relatively close to and separated along the reinforcing bar 1. According to the characteristic configuration of the fourth aspect of the invention, in addition to the effect of any one of the first to third aspects of the invention, in addition to the above-mentioned pair of rebar bending portions, the rebar body is bent from both ends thereof. It is possible to perform the operation, and it is possible to more efficiently perform the rebar bending work. Furthermore, for example, at the time of the bending operation of the reinforced body 1, while the position of the reinforced body 1 is maintained as it was initially,
The first bending pattern (see FIGS. 12 and 13) in which a plurality of locations are bent by the movement of the reinforcing bar bending portions 3.4 is taken, or the bending of one of the reinforcing bar bending portions 3.4 is completed (the bending force point portion is a reinforcing bar). By moving the rebar bend to the other rebar bend while maintaining contact with the body)
The second bending pattern such as moving to the next bending step by moving the rebar body is taken, and the selectivity of the bending pattern is improved. In particular, with respect to the first bending pattern, the rebar body is maintained in the state of being initially arranged,
As in the case of the second bending pattern, the reinforcing member does not inadvertently protrude around the device during the bending operation, and can safely enter the device periphery even during the bending operation.

[0010] As described above, the reference numerals are used for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. In the drawings, portions denoted by the same reference numerals as those of the conventional example indicate the same or corresponding portions.

[0012] The reinforcing member bending apparatus M according to the present embodiment comprises:
By simply bending the reinforcing steel net (an example of the reinforcing body 1) S or bending it into a cylindrical shape, the reinforcing bars such as the ribs and the stirrups used for the beams and columns are once removed. It is configured so that it can be formed efficiently in a lot. As shown in FIG. 1, the reinforcing member bending device M includes a first bending driving device (corresponding to a reinforcing bar bending portion) 3 and a second bending driving device (corresponding to a reinforcing bar bending portion) 4 on a base 2. The two bending driving devices are provided so as to be freely driven to approach and separate from each other.
The supply of the reinforcing bar net S to the reinforcing bar bending device M is as follows.
For example, in the case where the reinforcing bar bending device M is incorporated in the automatic transport line of the reinforcing bar network, the transport and supply are performed in a horizontal posture or a substantially horizontal posture from the second bending drive device 4 to the first bending drive device 3 side. There is a way to do that. In the case of using the reinforced body bending device M alone, for example, the reinforced net S is supplied to the both bending drive devices 3 and 4 from above by a manual method, Similarly to the above, there is a method in which the reinforcing net S is supplied so as to be positioned on both bending driving devices 3 and 4 while sliding on the second bending driving device 4.
Incidentally, as shown in FIG.
And the horizontal reinforcing bar S2 are arranged in a lattice pattern, and their intersections are integrated by welding.

The base 2 has a plurality of grounding members 2A formed of H-section steel arranged side by side at an interval.
A pair of rail members 2B made of I-shaped steel are integrally provided so as to straddle A. In addition, a mounting rod (an example of a support portion) that can freely support and support the reinforced net S in a state extending over the both rail members 2B at an intermediate portion between the both rail members 2B.
2C is attached via a column 2D. Incidentally, the both bending driving devices 3 and 4 are installed on both sides of the placing rod 2C so as to be movable on the both rail members 2B. Specifically, the wheels R provided in both bending driving devices 3 and 4 are provided in a state of being mounted on the rail member 2B, and both bending driving devices 3 and 4 are arranged in the longitudinal direction of the rail member 2B. It is configured to be freely driven along.

The two bending driving devices 3 and 4 will be described. Since both of the bending driving devices 3 and 4 have almost common equipment, the common parts of both will be mainly described.
As shown in FIGS. 2 and 3, the bending driving devices 3 and 4 are provided on a device main body 5 with a support shaft portion (a bending fulcrum portion) capable of supporting the reinforcing bar network S in a state of being positioned on the upper surface side of the reinforcing bar network S. One example) a bending shaft portion (an example of a bending force point portion) that is provided with a bending force by applying a moment force to the reinforcing bar network S by rotating around the support shaft portion 6 from the lower surface side of the reinforcing bar network S )
7 and mounting rods 8 on which the reinforcing bar net S can be mounted and supported in the same manner as the mounting rod 2C provided on the base 2, so that the apparatus main body 5 can be moved on the rail member 2B. Wheels R are provided. The reinforced net S is mounted and supported on the placing rods 2C and 8 described above.
Is referred to as a reinforcing bar arrangement space V. In addition, the apparatus main body 5 includes an air drive mechanism E that drives the support shaft portion 6 to move in and out in the vertical direction, an air drive mechanism E that drives a slide switch in the axial direction, and a rotational drive of the bending shaft portion 7. An electric motor D is provided for rotating the wheels R to move the apparatus main body 5 on the rail member 2B. The driving operation of each of the air drive mechanisms E and the electric motor D is controlled by a microcomputer, and is automatically performed by inputting in advance the dimensions of the rebar net S to be bent and the bending shape and dimensions. The rebar net S can be bent in a predetermined shape. Further, the air drive mechanism E
Is configured such that the amount of sliding of the support shaft 6 in the axial center direction can be changed and set. Therefore, for example, the slide amount L1 of the first bending drive device 3 is set to be larger than the slide amount L2 of the second bending drive device 4 (FIG. 6).
Conversely, the slide amount of the second bending drive device 4 is set to be larger than the slide amount of the first bending drive device 3, or the slide amount of both bending drive devices 3 and 4 is reduced. It can be set to be the same. In the reinforced body bending apparatus M of the present embodiment,
The slide amount L1 of the first bending drive device 3 is set to be larger than the slide amount L2 of the second bending drive device 4.

As shown in FIGS. 4 and 5, the support shaft 6 is capable of driving up and down switching with respect to the apparatus main body 5 and slidingly driven along the longitudinal direction of the support shaft 6. It can be switched freely. The support shaft 6
Are provided with a plurality of divided rollers 6A which can be arranged at intervals according to the rebar pitch of the rebar net S along the longitudinal direction. With respect to the bending operation of the reinforcing net S, the bending shaft portion 7 is rotated around the split roller 6A to lift the reinforcing net S and contact the split roller 6A, thereby applying a bending moment therearound. (Fig. 9.1)
0).

As shown in the drawing, each of the split rollers 6A has a roller mounting portion 9 having an "L" cross section and a plurality of support brackets formed to be slidable along the longitudinal direction of the split roller 6A. One end portion is attached to each of 6B. Specifically, one end of the split roller 6 </ b> A is attached to a vertical wall portion of the roller attaching section 9. Each support bracket 6B is connected to the upper end (each zigzag-shaped top) of a telescopic arm 6C formed in a parallel link shape as shown in the figure.
When B is moved in the axial direction of the split roller 6A, the other support fittings 6B are also moved in the same direction due to the expansion and contraction of the telescopic arm 6C. At this time, the spacing between the support brackets 6B is the same (or substantially the same) due to the action of the telescopic arm 6C composed of the parallel link mechanism. Therefore, by adjusting the spacing between the divided rollers 6A at one location, the spacing between the divided rollers 6A at other locations can be changed collectively. Incidentally, the telescopic arm portion 6C
Has one end fixed to a portion located on one end side of the support shaft 6, and the other end of the telescopic arm 6 C located on the other end of the support shaft 6 is connected to the support shaft 6. Is configured to be able to move along the longitudinal direction.

A projection 10 is formed at the lower end of the support fitting 6B so as to protrude downward.
Below B, a fitting long metal fitting 11 having a plurality of fitting holes 11a capable of fitting with the protrusion 10 is provided so as to be vertically movable. By driving the fitting long metal fitting 11 upward to fit the fitting hole 11a into the projection 10, the distance between the support fittings 6B can be locked. This fitting long metal fitting 11 is called a lock mechanism. The fitting hole 11a of the fitting long metal fitting 11
Are provided in a large number in accordance with the corresponding positions of the respective projecting portions 10 in each case so as to be able to correspond to several intervals of the divided rollers 6A. That is, the position of each split roller 6A can be changed in accordance with the rebar pitch of the rebar net S to be bent by the expansion and contraction of the telescopic arm portion 6C, and the position can be stably maintained by the lock mechanism.

On the other hand, the support shaft 6 with respect to the apparatus body 5
As described above, the mounting relationship is such that the up / down switching can be driven freely and the slide drive can be switched along the longitudinal direction of the support shaft portion 6. The mechanism and the slide drive mechanism are used when setting the rebar net S on the rebar body bending device M, at the time of the rebar net bending operation, and when removing the bent rebar net S from the rebar body bending device M. Used as needed. That is, FIG.
(A) As shown in FIG. 9 (a), if the up / down switching drive mechanism is controlled to the retreat side, the split roll 6A
Since it is located below the reinforcing bar S set on each mounting rod 8 and there is no interference with the reinforcing bar S, the reinforcing bar S
Set / remove and bending drive 3 during bending
4) It is possible to freely and efficiently carry out the movement of 4 and the like. Also, as shown in FIGS. 8 (b) and 9 (b), by controlling the up / down switching drive mechanism to the projecting side and operating the slide drive mechanism, each of the upper and lower vertical rebars S1 is moved above the vertical rebar S1. The division roll 6A can be located. The moving section distance of the vertical up / down switching drive mechanism is at least
It is necessary to set a value larger than the sum of the outer diameter of the split roller 6A and the thickness of the reinforcing bar net S, and a moving section distance of the slide drive mechanism to at least a value larger than the outer diameter of the vertical reinforcing bar S1. There is.

Further, with the operation of the slide drive mechanism, the vertical wall of the roller mounting portion 9 comes into contact with the side surface of the vertical reinforcing bar S1, and the reinforcing bar is set at a predetermined set position in the reinforcing bar body arrangement space V. This is for guiding the network S. In the reinforced body bending device M of the present embodiment, as described above, the slide amount L1 of the first bending drive device 3 is set to be larger than the slide amount L2 of the second bending drive device 4, As shown in FIG. 6, the reinforcing bar net S in the reinforcing bar arrangement space V is set in a state where the vertical reinforcing bar S1 has a slight angle with respect to the longitudinal direction of the reinforcing bar bending device M as shown in FIG. Incidentally, the support shaft portion 6 and the bending shaft portion 7
In both cases, the shaft cores J1 and J2 are set so as to extend along the width direction of the reinforcing bar bending device M.

As shown in FIG. 7, the bending shaft portion 7 includes a bending roller 7A, a long reinforcing member 7B for reinforcing the bending roller 7A, a bending roller 7A and a long reinforcing member 7B.
And a pair of flange members 7C for integrally connecting both ends of the flange member 7C to the apparatus main body 5 through a rotation axis X formed at a predetermined position corresponding to the two flange members 7C. It is attached. Therefore, with the rotation of the electric motor D provided in the apparatus main body 5, the bending roller 7A, the reinforcing elongated member 7B, and the flange member 7C can be rotated around the rotation axis X so as to be freely switchable between normal and reverse. It becomes possible. When the bending shaft portion 7 is rotationally driven from the lower side to the upper side of the metal net 1, the bending moment can be applied while the metal net 1 is being pushed up by the bending roller 7A to be bent. The bending roller 7 </ b> A is formed of a metal rod having a circular cross section, and is formed to have a length extending over the entire length of the support shaft 6. The reinforcing long member 7B is constituted by a pair of metal rods having a circular cross section positioned at the rear side during the bending operation of the bending roller 7A, and a metal square pipe, and at the time of bending operation by the bending roller 7A, It is configured to back up the entire length of the bending roller 7A and reduce the bending of the bending roller 7A. As shown in the drawing, the flange member 7C is provided with a rotation axis J of the rotation axis X.
3 is mounted slightly offset from the axis of the split roller 6A. This is because, as the bending roller 7A rotates to the bending operation side, the separation distance from the split roller 6A becomes smaller, so that the displacement of the contact position between the reinforcing net S to be bent and the rotary roller 7A can be reduced, For example, even when the horizontal reinforcing bar S2 is located at the contact position, the horizontal reinforcing bar S2 can be prevented from being caught by the bending roller 7A.

On the other hand, a configuration provided only for the first bending driving device 3 will be described. The first bending driving device 3 is provided with a positioning mechanism 12 which comes into contact with the front end of the reinforcing bar net S and can be guided to a set position on the device. As shown in FIG. 2, the positioning mechanism 12 includes a pressing member 12 </ b> A that abuts against a front end portion of the reinforcing bar net S, and the pressing member 12 </ b> A An extension / retraction drive device 12B is provided which is capable of being extended and retracted toward the front end of the predetermined position. Then, in a state where the retracting drive device 12B is in the retracted state, the pressing member 12A is positioned obliquely below the mounting surface of the reinforcing bar net S, and does not hinder the driving of the bending roller 7A. . In the protruding state, the pressing member 12 </ b> A comes into contact with the front end of the reinforcing steel bar S, and can be guided to the set scheduled position.

The bending mechanism of the rebar bending apparatus M according to this embodiment will be described. In the reinforcing bar bending apparatus M, both the support shaft portion 6 and the bending shaft portion 7 have their axes J1 and J2 installed along the width direction of the reinforcing bar bending device M. Reinforcing body placement space V
As described above, the reinforcing bar net S is set in a state where the vertical reinforcing bar S1 has a slight angle with respect to the longitudinal direction of the reinforcing bar bending device M in a plan view, as described above. That is, in the case where the reinforcement net S placed on the reinforcement body placement space V is mainly used, the bending axis portion 7 is positioned with respect to the orthogonal axis J5 orthogonal to the reinforcement axis J4 of the vertical reinforcing bar main body S12 in a plan view. That is, the bending shaft portion 7 is configured so that the rotation shaft core J3 of FIG. Accordingly, the bending end S11 of the vertical rebar S1 rises around the support shaft 6 with the bending drive of the bending shaft 7, but the virtual plane K including the movement trajectory of the bending end S11 is as described above. Vertical rebar main body S on support rod 2C
Twelve rebar shaft cores J4 intersect at an angle. Therefore, when the both ends of the vertical reinforcing bar S1 are bent to form a cylindrical reinforcing bar network S, the both ends of the vertical reinforcing bar S1 are slightly displaced along the cylinder axis direction of the reinforcing bar network S, Interference is prevented. The reason that the interference between the both ends of the reinforcing steel net S can be prevented in this way is that the bending axis portion 7 is configured so that the rotation axis J3 is inclined with respect to the orthogonal axis J5, Such a mounting structure of the bending shaft portion 7 is referred to as a bending means 20.

Next, an embodiment of the bending operation of the reinforcing bar S will be described. However, the dimensions of the rebar net S to be bent (external dimensions / vertical and horizontal rebar pitch) [1] The rebar net S is placed on each of the placing rods 2C and 8;
The positioning mechanism 12 guides the rebar net S to the set position. However, the positions of the both bending driving devices 3 and 4 are located at a predetermined distance inward from the end of the reinforcing bar net S, and each split roller 6A is retracted below the reinforcing bar net S. [2] The split roller 6A is provided with a vertical reinforcing bar S1 of the reinforcing bar network S.
The hook 13 is bent at the front and rear ends of the longitudinal reinforcing bar S1 of the reinforcing bar network S by driving the supporting shaft portion 6 and the bending roller 7A so as to be positioned above (FIG. 12).
(A) and 13 (A)). [3] After returning the bending roller 7A of one bending driving device 3 (or the other bending driving device 4) to the original position and retreating the split roller 6A downward, the bending driving device 3 (4) Is moved a predetermined distance toward the other bending driving device 4 (or one bending driving device 3) (FIG. 13).
(B)). [4] The split roller 6A of one bending driving device 3 (or the other bending driving device 4) is positioned above the vertical reinforcing bar S1, and the bending roller 7A is driven to form the reinforcing bar net S by 9
After bending by 0 degree (or almost 90 degrees), the bending roller 7 of the other bending drive device 4 (or one bending drive device 3).
A is returned to the original position, and after the split roller 6A is retracted downward, the bending driving device 4 (3) is moved toward the one bending driving device 3 (or the other bending driving device 4) by a predetermined distance. Slide (see FIGS. 12 (b) and 13 (c)). [5] The split roller 6A of the other bending drive device 4 (or one bending drive device 3) is positioned above the vertical reinforcing bar S1, and the bending roller 7A is driven to form the reinforcing bar network S 9.
After bending by 0 degree (or almost 90 degrees), the bending roller 7 of one bending driving device 3 (or the other bending driving device 4)
A is returned to the original position, and the split roller 6A is retracted downward. In this state, the reinforcing bar net S can be bent so that the vertical reinforcing bar S1 has a “U” shape (see FIGS. 12C and 13D). [6] In the case of further bending, one bending driving device 3 (4) is slid to the other bending driving device 4 (or one bending driving device 3) side by a predetermined distance, and then divided. The roller 6A is positioned above the vertical rebar S1, and the bending roller 7A is driven to bend the rebar network S by 90 degrees (or almost 90 degrees), thereby to reinforce the vertical rebar S.
The rebar net S can be bent so that 1 has a rectangular shape (see FIG. 12D). When the reinforcing wire net S bent in [5] and [6] is removed from the device, the bending roller 7A and the split roller 6A of each of the bending driving devices 3.4 are returned to their initial positions.

The above-described bending method is basically performed without moving the rebar net S when moving the bending driving device. However, as another method, the rebar network S is bent while being bent by the bending roller 7A. There is also a method in which the bending driving device is moved together with the net S to move to the next bending step. However, in this case, there is a risk that the tip of the rebar net S that has been moved may protrude outward from the rebar bending device M, so that a person may enter the portion or place luggage or other machines. Need to be eliminated, which requires extra space around the device. Therefore, according to the bending method described in the above embodiment, those problems are solved, and it is not necessary to secure an extra space around the device.

[Another Embodiment] Another embodiment will be described below.

<1> The reinforcing bar 1 is not limited to the reinforcing bar network S described in the above embodiment, and may be, for example, only the vertical reinforcing bar S1. It is also possible to bend. These are collectively referred to as reinforced body 1. <2> The reinforcing bar bending device M is not limited to the one having the pair of reinforcing bar bending portions 3 and 4 as described in the above embodiment, and may be configured to include a single reinforcing bar bending portion, for example. Or a structure provided with three or more rebar bending portions. <3> The bending means 20 is not limited to the one configured by the mounting structure of the bending force point portion 7 with respect to the reinforcing bar 1 described in the above embodiment. For example, as shown in FIG.
A groove 14 that can be supported is formed on the support portion 2C in a state where the reinforcing bar 1 is positioned in a predetermined posture, and the groove direction of the groove 14 is 90 degrees with the rotation axis J3 of the bending force point portion 7 in a plan view. It may be configured to be set to be slightly larger or slightly smaller than 90 degrees. In this case, a plurality of the groove portions 14 may be provided at intervals in the longitudinal direction of the support portion 2C, or only one groove portion 14 may be provided. In the case where one groove is provided, for example, it can be used when bending a single reinforcing bar, and when bending the reinforcing bar network S, one of a plurality of vertical reinforcing bars S1 is fitted to determine the posture. Therefore, it is possible to cope with a reinforcing bar network S having different pitches of the vertical reinforcing bars S1, and it is possible to improve versatility. <4> Further, as another embodiment of the bending means 20,
As shown in FIG. 15, the bending force point portion is constituted by a bending shaft portion 15 having a truncated cone-shaped outer peripheral surface, or the bending fulcrum portion is constituted by a support shaft portion 16 having a truncated cone-shaped outer peripheral surface. Or a combination thereof. In any case, it is possible to prevent both ends of the reinforcing bar 1 from interfering with each other due to bending. The bending means 20 including the embodiment of the above <3> and this embodiment
Collectively.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a reinforcing member bending apparatus.

FIG. 2 is a perspective view showing a bending driving device.

FIG. 3 is a plan view showing a bending driving device.

FIG. 4 is a perspective view showing a support shaft.

FIG. 5 is an explanatory view showing a telescopic arm unit.

FIG. 6 is a top view showing an arrangement state of a reinforcing mesh.

FIG. 7 is a cross-sectional view of a main part of a side view showing the bending drive device.

FIG. 8 is an explanatory diagram for explaining the operation of the support shaft.

FIG. 9 is an explanatory view for explaining the operation of the support shaft.

FIG. 10 is an explanatory view for explaining an operation of a bending shaft portion.

FIG. 11 is a plan view of a main part showing an arrangement state of a reinforcing bar net;

FIG. 12 is an explanatory diagram showing a bending procedure of a reinforcing mesh.

FIG. 13 is an explanatory diagram showing a bending procedure of a reinforcing net.

FIG. 14 is a top view showing a rebar bending apparatus according to another embodiment.

FIG. 15 is a top view showing a main part of a reinforcing bar bending apparatus according to another embodiment.

FIG. 16 is an explanatory view showing a main part of a conventional reinforcing body bending apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Reinforcement body 2C support part 3 Reinforcement bending part 4 Reinforcement bending part 6 Bending fulcrum part 7 Bending force point part 20 Bending means K Virtual surface S Reinforcing network S1 Vertical reinforcing bar S2 Horizontal reinforcing bar S11 Bending end S12 Vertical reinforcing bar main body V Rebar mounting space J3 Rotation axis J4 Reinforcing axis J5 Orthogonal axis

Claims (4)

[Claims] A supporting portion for supporting a reinforcing member to be bent in a reinforcing member arrangement space is provided, and a bending fulcrum portion serving as a bending fulcrum during a bending operation of a reinforcing member, and a bending force acting on the reinforcing member during a bending operation of the reinforcing member. A bending force point portion to be provided is provided with the reinforcing bar arrangement space interposed therebetween, and the bending force point portion is moved around the bending fulcrum portion to apply a bending force to the rebar body arranged in the reinforcing bar arrangement space. A bending device for bending a reinforcing bar at a contact portion with the bending fulcrum portion by a bending operation, wherein the bending end portion of the reinforcing bar moves around the bending fulcrum portion with the bending operation. A bending surface for bending the reinforcing bar so that a virtual plane including the movement trajectory intersects at an angle with a reinforcing rod axis of the reinforcing bar body supported by the supporter. 2. The bending means is formed by forming the bending force point portion such that a rotation axis of the bending force point portion is inclined with respect to an orthogonal axis orthogonal to a reinforcing bar axis of the reinforcing bar body. 2. The bending apparatus according to claim 1, wherein 3. The rebar body is a rebar network in which a plurality of vertical rebars and a plurality of horizontal rebars are assembled in an intersecting state and integrated, and a bending fulcrum portion is provided for each of the vertical rebars. 3. The method according to claim 1, wherein the bending force point portion is provided.
A bending device for a reinforced body according to claim 1. 4. A pair of reinforcing bar bending portions each including the bending fulcrum portion and the bending force point portion are provided so as to be relatively close to and separated from each other along the reinforcing bar in the reinforcing bar arrangement space. Item 4. The reinforcing bar bending device according to any one of Items 1 to 3.