JP3288098B2 - Rebar bending equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing bar bending apparatus suitable for integrally bending a reinforcing steel bar such as a reinforcing steel mesh as a frame of reinforced concrete at a desired angle.

[0002]

2. Description of the Related Art A reinforcing bar bending apparatus for integrally bending a reinforcing bar mesh in which reinforcing bars are arranged in a mesh shape and welded or the like is provided with a base on which the reinforcing bar mesh is set,
A bending fulcrum located at the bending position of the plurality of reinforcing bars set on the gantry and arranged inside the bending direction, and a plurality of reinforcing bars are moved by moving one end side of the plurality of reinforcing bars using the bending fulcrum as a fulcrum. And a bending force point portion that bends all at once. With this rebar bending device, when bending the rebar mesh, place the rebar mesh on the gantry, move the rebar mesh, position the rebar to be bent below the bending fulcrum, and apply the bending force point Bend the rebar using the bending fulcrum as a fulcrum.

[0003]

When performing the rebar mesh bending operation with the above-described rebar bending apparatus, the rebar mesh on the gantry is displaced in the bending direction along with the operation of bending the rebar mesh at a bending force point portion. is there. That is, there is a problem that the bending operation of the reinforcing mesh shifts the position of the entire reinforcing mesh, and consequently the bending position of the reinforcing mesh shifts from the fixed position.

[0004] In order to solve this problem, it is conceivable to provide a stopper for fixing the entire reinforcing mesh at a fixed position behind the reinforcing bar where the reinforcing mesh is bent. However, when such a stopper is provided, each time the operation of bending the reinforcing mesh is performed, the stopper is manually engaged with the fixed position of the reinforcing mesh to fix the reinforcing mesh. Normally, since the reinforcing mesh has a plurality of bent portions, it is troublesome to manually install a stopper for each bent portion and engage with the reinforcing mesh. Furthermore, since a reinforcing mesh is generally a structure having a wide area, it is necessary to fix a plurality of portions of the reinforcing mesh with stoppers during one bending operation, and a plurality of stoppers are installed for each bending operation of the reinforcing mesh. It is difficult to perform the work of engaging with the rebar mesh. Therefore, the operation of operating the stopper requires skill, and is difficult unless a skilled person.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and when bending a braided reinforcing bar such as a reinforcing bar mesh set on a gantry, a bending fulcrum accurately positions a reinforcing bar portion of the reinforcing bar mesh to be bent. It is an object of the present invention to provide a rebar bending device which can bend a rebar and make it easy to bend the rebar.

[0006]

In order to solve the above-mentioned problems, a rebar bending apparatus according to the present invention comprises a gantry on which a braided reinforcing bar is set, and a gantry which is set on the gantry at a bending position. A rebar bending apparatus comprising: a bending fulcrum disposed inside a bending direction; and a bending force point that bends the plurality of rebars at once by moving one end of the plurality of rebars using the bending fulcrum as a fulcrum. A raised position, which is disposed below the braid set on the gantry, engages with the braid and fixes the braid on the gantry, and a retracted position disengaged from the braid. A stopper configured to be able to move up and down between them is provided. A rail extending in the feed direction of the reinforcing bar is disposed below the reinforcing bar set on the gantry, and the plurality of stoppers are mounted on the rail so as to be changeable in the feed direction. A drive source for vertically moving each stopper and a control unit for controlling the drive source to control the vertical movement of each stopper are provided. Further
Further, there is provided a braided rebar feeder which engages with the braided rebar and transfers the rebar in the feed direction.

[0007]

According to the rebar bending apparatus of the present invention, the braided bar fixed on the gantry by the stopper is bent, so that the braided bar does not shift on the gantry during the bending operation, and the braided bar is fixed to the bending fulcrum. A predetermined bending point can be located. Ma
In addition, a plurality of stoppers are mounted on a rail arranged below the gantry on which the braided reinforcing bar is set so that the position can be changed, and the vertical movement of each stopper is controlled by the control unit.
The braces can be fixed by automatically operating stoppers corresponding to a plurality of bending points. Further, since a braided rebar feeder is provided to transfer the braided rebar in the feed direction,
The part to be bent of the braided rebar can be automatically located at the bending fulcrum.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a reinforcing bar bending apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 show a rebar bending apparatus according to one embodiment. As shown in FIG. 1, reference numeral A denotes a reinforcing bar bending device, and a plurality of roller conveyors 3 (stands) on which a reinforcing bar mesh 2 is set are mounted on a base 1 shown in FIG. The roller conveyor 3 has a bending support shaft 4 (bending fulcrum portion) at the front end of the roller conveyor 3 and a bending force point for bending a plurality of rebars collectively using the bending fulcrum shaft 4 as a fulcrum. A shaft 5 (bending force point portion) is provided, and slide rails 6, 6 are disposed below both sides of the roller conveyor 3, and the reinforced mesh 2 is fixed to the slide rails 6, 6 on the roller conveyor 3. A plurality of stoppers 7 are provided, and a reinforcement mesh feeder 8 for transferring the reinforcement mesh 2 in the feed direction on the roller conveyor 3 is provided substantially at the center of the reinforcement bending device A.

The bending fulcrum shaft 4 is supported by a shaft supporting portion 9 fixed at intervals along its length direction. As shown in FIG. 2, the shaft supporting portion 9 has a lower end shown in FIG. It is a configuration that can be rotated around a horizontal axis that does not. Therefore, the bending fulcrum shaft 4 can move between a fixed position where the rebar mesh 2 is bent and a retracted position, and can be freely inserted into and removed from the hole 10 of the shaft support 9. Bending force point shaft 5
Are arranged in front of and below the shaft support 9 in parallel with the bending fulcrum shaft 4, and are driven by a drive mechanism (not shown) provided below the roller conveyor 3. The slide rails 6, 6 disposed below both sides of the roller conveyor 3 extend so as to extend in the feed direction of the reinforcing mesh 2, and a plurality of stoppers 7 are attached to the slide rail 6 so as to be changeable in position. I have.

The details of the stopper 7 are shown in FIG. 3 and FIG. As shown in FIG. 3, the stopper 7 has a hook portion 11 that engages with the reinforcing mesh 2 and a cylinder 12 that holds the hook portion 11 so as to be movable in the horizontal direction, and air that moves the hook portion 11 up and down. The cylinder 13 (drive source)
It is configured to be fixed to the slide rail 6 by a lock bolt 15a via a base plate 14. Stopper 7
The hook portion 11 can be moved in the horizontal direction in the cylinder 12, and is fixed by fixing the lock bolt 16.
It is designed to be fixed inside. As shown in FIG. 4, the connecting portion 15b of the lock bolt 15a and the base plate 14 is located in a hollow portion formed inside the slide rail 6, and when the lock bolt 15a is loosened, the connecting portion 15b Is movable in the hollow portion, so that the stopper 7 can move on the slide rail 6.

The vertical movement of the air cylinder 13 for vertically moving the stopper 7 is controlled by a control unit 17 shown in FIG. The rebar mesh feeder 8 includes a rodless cylinder 18 and a rebar receiving frame 19 that can move on the rodless cylinder 18. The rebar mesh 2 is engaged with the rebar receiving frame 19 and is transported on the roller conveyor 3 in the feed direction by driving the rodless cylinder 18.

Next, a description will be given of an operation procedure for performing the bending operation of the reinforcing bar mesh 2 by the above-described reinforcing bar bending apparatus A. 5 to 10 show an example of an operation process for performing the bending process of the stirrup mesh 20. 5 to 10,
The stapling streaks of the stapling mesh 20 are denoted by reference numeral 21, and the setup streaks are denoted by reference numeral 22. In FIG. 5, the stoppers 7 are arranged at positions A, B, C, D, and E below the stirrup mesh 20 arranged at a predetermined position. From this state, as shown in FIG. 6, the stopper 7 located at the position B is engaged with the setup streaks 22, and the end of the stap mesh 20 is bent. Next, as shown in FIG. 7, the stapling mesh 20 is bent by engaging the stopper 7 located at D with the setup streaks 22. Thereafter, similarly, as shown in FIGS. 8 to 10, each stopper 7 located at A, C, and E
Are successively engaged with the setup streaks 22 to bend at the bending positions of the respective stapling meshes 20, whereby the stapling mesh 20 is bent into a box shape. In this operation, each of the stoppers 7
The air cylinder 13 that moves up and down moves the control unit 17
Automatically controlled by In the above description, the movement of the bent portion of the stirrup mesh 20 to the position of the bending fulcrum shaft 4 is performed by the rebar mesh feeder 8. The vertical movement of each of the stoppers 7 located at A to E is performed by the control unit 17 in synchronization with the amount of movement of the rebar mesh feeding device 8. Therefore, this rebar bending device A
In this case, the engagement of the stopper 7 with the setup streaks 22 of the stapling mesh 20 is sequentially performed. If the position of the stopper 7 on the slide rail 6 is adjusted in advance, the bending operation of the stapling mesh 20 is automatically performed. It can be done efficiently and labor is saved.

[0013]

According to the rebar bending apparatus of the present invention, the following effects can be obtained. The work is easy because the braided reinforcing bar can be fixed on the gantry with the stopper and the bent portion of the braided reinforcing bar can be accurately positioned at the bending fulcrum and bent. Ma
In addition, since the drive source for vertically moving the stopper is controlled by the control unit, and the operation of engaging the plurality of stoppers with the plurality of locations of the reinforcing bar and bending the reinforcing bar is automated, the operation is made more efficient. Further, a braided rebar feeder for transferring the braided rebar is provided, and the efficiency of the operation of continuously bending the braided rebar can be improved, so that productivity can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view of a reinforcing bar bending apparatus according to an embodiment of the present invention.

FIG. 2 is a side view of the device.

FIG. 3 is a front view of a stopper according to the embodiment of the present invention.

FIG. 4 is a side view of the stopper.

FIG. 5 is a schematic diagram illustrating a stopper position in a step of bending a stap mesh.

FIG. 6 is a first process drawing of the bending process.

FIG. 7 is a second process drawing of the bending process.

FIG. 8 is a third step diagram of the bending process.

FIG. 9 is a fourth process diagram of the bending process.

FIG. 10 is a fifth process diagram of the bending process.

[Explanation of symbols]

A Reinforcing bar bending device 2 Reinforcing bar mesh (brass bar) 3 Roller conveyor (base) 4 Bending fulcrum shaft (Bending fulcrum portion) 5 Bending force point shaft (Bending force point portion) 6 Slide rail (rail) 7 Stopper 8 Rebar mesh feeder (Combination) Rebar feeder 13 Air cylinder (drive source) 17 Controller

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Akimitsu Hatsuta 2-15-15 Sangenya Higashi, Taisho-ku, Osaka-shi, Osaka Inside Toyo Construction Machinery Co., Ltd. (72) Yasuo Hayashi Matsushima, Higashi-ku, Fukuoka City, Fukuoka Prefecture 5-28-21 Toyo Construction Machinery Co., Ltd. (56) References JP-A-5-92225 (JP, A) JP-A-1-104431 (JP, A) JP-A-6-87026 (JP, A) (58) Fields surveyed (Int. Cl. ⁷ , DB name) B21F 1/00 B21F 33/00 B21F 27/12

Claims (1)

(57) [Claims] 1. A gantry on which a braided reinforcing bar is set, a bending fulcrum located at a bending position of the braided reinforcing bar set on the gantry and arranged inside the bending direction, and the bending fulcrum being a fulcrum. A bending force point portion for bending a plurality of rebars at once by moving one end side of the plurality of rebars, wherein the bending force point portion is disposed below the braided bar set on the gantry; A raised position for engaging and fixing the braided rebar on the gantry,
A stopper configured to be able to move up and down between the retracted position disengaged from the braided bar is provided, and below the braided bar set on the gantry , the stopper of the braided bar is provided.
A rail extending in the feed direction is provided, and a plurality of rails are provided on the rail.
The stopper is attached so that the position can be changed in the feed direction.
And a drive source for vertically moving each of the stoppers;
A control unit that controls the vertical movement of each of the stoppers
Is provided and is engaged with the reinforcing bar to transfer the reinforcing bar in the feed direction.
A reinforcing bar bending device, comprising: