JP2521760Y2 - Haunch bending and rebar bending machine - Google Patents

Description

[Detailed description of the invention] [Industrial applications]

The present invention relates to a double rebar bending machine capable of performing haunch bending.

[Prior art]

For concrete pillars of buildings, for example,
The vertical reinforcing bars standing in a square shape and the horizontal reinforcing bars wound around the reinforcing bars are buried as reinforcements, and concrete is cast. This horizontal reinforcing bar is bent not only at a right angle but is processed so that it can be wound around the vertical reinforcing bar, but also has a shape in which a central portion forming one side is bent inward to be wound to increase the strength of the horizontal reinforcing bar. Processing has been applied. This inward bending is called haunch bending, and is performed every corner processing by a rebar bending machine having a process of bending at right angles and a haunch bending process.

[Problems to be solved by the invention]

In a conventional reinforcing bar bending machine that performs a hunting bending process, in order to perform the processing at each corner, first set a reinforcing bar to be processed at a predetermined position, then bend in a perpendicular direction, and then perform a hunting bending. Finish the first corner processing. Then, in order to machine the other corner of the side where the hunting bending has been performed, the rebar having finished machining at one corner is separated (lifted) from the rebar bending machine, and the other end is set at a predetermined position by inversion or the like. And hunting bending. Therefore, two sets and two bending operations are required, and there is a problem that it takes a lot of time and trouble to move a heavy and difficult-to-handle rebar, and it involves danger. Therefore, the present invention is to provide a rebar bending machine which can easily perform hunting bending in a short time.

[Means for Solving the Problems]

In the present invention, two sets of bending mechanism center rollers for bending a reinforcing bar 90 degrees in the same direction are arranged on the left and right of a straight line of a machine base, and two guide rollers of each bending mechanism for holding the reinforcing bar are provided.
The guide roller on the center roller side is arranged at the non-bending side position, the other center roller side guide roller is arranged at the bending side position, and a bending roller is provided on the center roller side of the center roller side guide roller, and the other center roller is provided. A haunch bending cylinder is disposed at a non-bending side position on the other center roller side of the side guide roller.

[Action]

The operation of the present invention is as follows. A long reinforcing bar is installed so as to be sandwiched between two guide rollers of each center roller disposed on the left and right sides of the machine base. The guide roller is received by the side guide rollers and bent inward with the other center roller side guide roller as a fulcrum, thereby completing the hunting bending. Next, by rotating each bending roller, it is received by the center roller side guide roller and bent at 90 degrees along the center roller to finish the processing. That is, a total of three steps of setting the rebar, operating the haunch bending cylinder, and operating the bending roller can be performed.

【Example】

The drawings show one embodiment of the present invention. The machine 1 includes a center roller 2, a bending roller 3, two guide rollers 4, 5 and a hammer bending cylinder 6 as a set of left and right bending mechanisms. Is installed in a pair. The bending mechanism includes a center roller 2 and a bending roller 3 that bend the rebar 90 degrees in the same direction, and the center roller-side guide roller 4 moves the rebar to a non-bending position on the other center roller 2 side of the bending roller 3. Are installed at an interval that can be clamped. On the other center roller side of the center roller side guide roller 4, the other center roller side guide roller 5 is folded at a bent side position (with the center roller 2 and the center roller 2) at an interval facing the center roller side guide roller 4. (On a straight line). Accordingly, the rebar is sandwiched and positioned by the center roller 2 and the other center roller side guide roller 5 at the bent side position and by the center roller side guide roller 4 at the non-bent side position. On the other center roller side of the other center roller side guide roller 5, a haunch bending cylinder 6 is located at a non-bending side position on the side of the center roller side guide roller 4, and the rebar is connected to the other center roller side guide roller 5. Haunch-bend to the bending side as a fulcrum. The bending mechanism is provided at symmetrical positions on the left and right, and the position of one bending mechanism can be moved in the left and right direction, so that the bending interval of the reinforcing bar can be adjusted.

[Effect of the invention]

As described above, according to the present invention, since the haunch bending cylinder for performing the haunch bending process and the bending mechanism having the conventional bender are arranged one by one on the left and right, the bending and the haunch bending can be simultaneously performed on the left and right, and furthermore, for bending. The rebar set only needs to be done once, which is very efficient. That is, conventionally, three steps are required on one side, including the setting step, and the total number of steps is six, but the present invention provides an effect of three steps. This simplification of the process can omit the setting of the reinforcing bar once, so that the effect of shortening the time and contributing to the safety of the work is enormous.

[Brief description of the drawings]

 The drawings are plan views showing one embodiment of the present invention. 1 is a machine base 2 is a center roller 3 is a bending roller 4 is a center roller side guide roller 5 is another center roller side guide roller 6 is a haunch bending cylinder

Claims (1)

(57) [Scope of request for utility model registration] 1. A pair of bending rollers for bending a reinforcing bar 90 degrees in the same direction are arranged on the left and right sides of a straight line on a machine base. Of the two guide rollers of each bending mechanism for holding the reinforcing bar.
The guide roller on the center roller side is arranged at the non-bending side position, the other center roller side guide roller is arranged at the bending side position, and a bending roller is provided on the center roller side of the center roller side guide roller, and the other center roller is provided. A haunch bending machine and a rebar bending machine, wherein a haunch bending cylinder is disposed at a non-bending position on the other center roller side of the side guide roller.