KR100229303B1 - Method and apparatus for bending and shaping reinforcing bar for deck of concrete structure - Google Patents

Abstract

The present invention provides a method and apparatus for easily and precisely bending and bending the reinforcing bar disposed on the deck plate of a concrete structure with light manipulation force, and to change and adjust the state of bending forming. It is able to bend between the parts held by each bar of the rebar by holding the grip on the movable bar and acting on the middle of the bar which is held in place by pressing and bending means operating in the direction intersecting with the rebar axial direction. To be.

Description

Reinforcing bar bending method for concrete deck board and its device

1 is a side view showing one embodiment of the bending molding apparatus according to the present invention.

2 is a plan view of the embodiment of FIG.

FIG. 3 is a perspective view showing one embodiment of the configuration on the feeding side from the bending roller portion of the embodiment of FIG. 1. FIG.

4 is a side view showing one embodiment of a deck plate obtained by using reinforcing bars according to the method of the present invention.

5 is a side view of another side of the embodiment of FIG.

* Explanation of symbols for main parts of the drawings

1 expectation 2 transfer tray

3: Fixed Rod 3a: Chuck

4: bending roller guide 5: movable rod

5a: chuck 7: cutter

8: cutting machine 11: guide shaft

17: transfer cylinder 18: attachment portion

19: Chuck cylinder 21: Slide axis

23: chuck return cylinder 27: gap adjusting means

28: limit means 30: wire rod

30a: mountain-shaped curved wire 30b: mountain-shaped curved top

31: guide means 32: maintenance means

41: bending roller 101: lattice wire rod

101a: first lattice material 101b: second lattice material

102a: present member 102b: present member

103: hanging member 103a: hanging member

103b: hanging member 104: metal plate

130: truss

[Industrial use]

The present invention relates to a reinforcing bar bending method for a deck plate of a concrete structure, and a device thereof, and to easily and accurately bend the reinforcing bar disposed on a deck plate of a concrete structure with a relatively light operating force, and to change and adjust the state of the bending forming appropriately. It is intended to provide a possible method and apparatus.

[Prior art]

It is well known to use reinforcing bars in constructing concrete structures. In particular, deck plates combining metal plates and curved rebars have been used in constructing buildings.

Therefore, in the flexural reinforcing bar to obtain such a deck plate, a pressure bending method has been conventionally used between molds, and the bending reinforcing bars obtained by such pressure bending forming are placed in a cross shape with respect to a metal plate and welded to concrete. It is to obtain a deck plate for constructing the structure.

[Problem to Solve Invention]

Although the above-described prior art can obtain a predetermined flexural rebar, the bending process between the molds is not very easy, and there is a disadvantage that the damage of the molds and the like during the bending process is also large, and the number of processing steps is large.

In addition, in the case of such a mold, the bending dimensions of the bent steel reinforcement that can be specifically obtained must be specified, and the actual required bending reinforcing steel material is usually different in its bending height or bending angle according to each construction condition. To cope with the change, a number of molds must be prepared. That is, the mold cost is quite large, special equipment and attention is required for the storage and arrangement of such a plurality of molds, and the increase in the number of processes and the interruption of work related to the mold exchange operation are required.

In addition, it is difficult to obtain a suitable reinforcing bar in each case because the preferred reinforcing material for the actual construction is a variety of dimensions and reinforcement density changes in relation to the height and the required strength of the concrete layer.

[Means for solving the problem]

The present invention is repeatedly studied to solve the problems in the prior art as described above, and easily bend using a bending processing means that does not use a mold. To get it.

The contents of the present invention are as follows.

According to the present invention, the reinforcing bar bending method for a deck plate of a concrete structure is appropriately calibrated for reinforcing bar by a fixed bar and a movable bar installed so as to be able to slide with respect to the fixed bar, and in the axial direction of the bar in the gripped state. By operating in the cross direction by acting on the pressure bending means in the middle of the reinforcing bar is characterized in that the bending between the gripping portion by each chuck in the sliding state of the movable chuck. In addition, the reinforcing bar bending apparatus for the concrete structure deck plate according to the present invention has a fixed rod fixed to the base and a movable rod moved by the guide means installed in the direction of the fixed rod, the arrangement of the guide means between the rods A bending means guided by a guide mechanism provided in a direction intersecting the direction, a bending operation cylinder is installed for the bending means, a pressurizing tension operation cylinder is also provided for the movable rod, and together with a fixed rod The movable rod is attached to the transfer table, a transfer cylinder is installed between the transfer table and the base, and the gap adjusting means is installed between the movable rod and the base.

[Action]

Rebars that have been properly calibrated are gripped at a predetermined interval by a fixed rod and a movable rod installed so as to slide about the fixed rod, so that the rebar can be bent without requiring a special mold.

By applying the pressure bending means operating in the direction intersecting in the direction of the reinforcing bar in the state of holding the reinforcing bar as described above to the middle of the reinforcing bar is installed so that the reinforcing bar can be appropriately bent by the bending means such as rollers .

In the state in which the movable rod can slide, a smooth target bending process is carried out in the state of being able to slide in a state held by the movable rod by bending between the holding portions by the respective rods of the rebar. Performed smoothly.

A fixed rod fixed to the base and a movable rod moved along the guide means installed in the direction of the fixed rod, and guided by guide mechanisms installed along the direction intersecting the arrangement direction of the guide means between the rods. By installing the bending means, it is possible to perform accurate bending processing on the reinforcing bar while holding the reinforcing bar to be processed on the fixed bar and the movable bar.

By installing a bending cylinder for the bending means installed as described above, and installing a pressurizing and pulling cylinder for the movable rod, both sides of the bent part that bends under a balanced tension condition by applying a proper tensile force to the reinforcing bar during the above bending operation. The bending is performed by making the straight state.

By attaching the fixed rod and the movable rod to the feeder as above, installing the transfer cylinder between the feeder and the base, and installing the gap adjusting means between the movable rod and the base, The height of the reinforcing bars due to the bending can be changed by adjusting the amount of movement of the conveyer by the gap adjusting means. In addition, by installing a control means for the operating range of the bending means in the guide mechanism as described above by adjusting the bending processing amount by the bending means by changing the bending processing angle for the reinforcing bar in harmony with the above-mentioned height change It allows for bending with varying heights.

EXAMPLE

When explaining the specific embodiment according to the present invention with reference to the accompanying drawings, the guide portion 12 of the feed table 2 is coupled to the guide shaft 11 provided on the base 1, in particular the base 1 The transfer cylinder 17 is installed in the mounting seat 18 installed on one side of the side to allow the transfer table 2 to be moved along the guide portion 12.

The transfer bar (2) as described above is provided with a fixed rod (3) and a movable rod (5) which is operated to move along the slide shaft (21) installed extending from the fixed rod (3), the movable rod (5) and A chuck return cylinder 23 is installed between the base 1 and a bend operation cylinder installed on the base to operate along the bent roller guide portion 4 provided between the fixed chuck 3 and the movable chuck 5. The bending roller 41 operates by this.

That is, the chuck cylinder 19 is provided for the fixed chuck 3, and the chuck cylinder 15 is also provided for the chuck portion 5a of the movable chuck 5 so that the chuck portions of such chucks 3, 5 ( If the bending roller 41 operates in the state where the wire rod 30 fitted to the portions 3a and 5a is gripped and the wire rod 30 is gripped in this manner, the wire rod 30 is subjected to a resistance condition by the chuck return cylinder 23. Is bent.

That is, as the wire rod 30 is bent, the movable rod 5 is pulled in the direction of the fixed rod 3 so that the distance between the fixed rod 3 and the movable rod 5 is reduced, so that the bending portion by the bending roller 41 is provided. It is bent so that the inclined linear portion of the wire rod is formed on both sides, and after completion of the bending, the grip state by the chuck 5a of the movable chuck 5 is released, and the movable chuck 5 is doubled by the action of the cylinder 23. The new chuck position of the wire rod 30 is gripped by the chuck portion 5a.

By operating the transfer cylinder 17 after the above operation is performed, the fixed rod 3 on the transfer table 2 is installed on the other end side of the base 1 in a state in which the bending rod is held together with the movable rod 5. It is pushed in the direction of the cutters 7 and 8, and a new straight wire rod is conveyed on the base 1. In addition, since the cutters 7 and 8 are operated after the bending wire of a predetermined length is extruded by the action of the transfer cylinder 17 as described above, the bending wire of a certain length can be obtained.

The transfer table 2 is provided with an interval adjusting means 27 for adjusting the moving interval of the movable chuck 5, and by adjusting the adjusting means 27, the operating range of the movable chuck 5 is limited, Therefore, the withdrawal amount of the wire rod 30 is adjusted accordingly the bending height of the wire rod. In addition, the bending roller guide portion 40 is provided with a limiting means 28 for limiting the operating range (height) of the bending roller 41 as described above, as shown in FIG. By arbitrarily adjusting the bending width obtained by bending the wire rod by using a combination of the wire rods, various wire bending states can be selected by combining the adjustment by the means 27 and 28.

In the bending process of the wire rod 30 as described above, the torsional force acts in the bending process by the bending roller 41, and the bending direction of the previously shaped mountain shape appears to be not constant. That is, one example of the means for preventing the displacement and twist in the mountain-shaped direction of the curved wire rod is shown in FIG. 3, and guide means 31 for receiving and guiding the mountain-shaped curved wire rod 30a. And a holding means 32 for accommodating and retaining the mountain-shaped bent top portion 30b, and bending to form a mountain-shaped bent wire 30a that is discharged from the fixed rod 3 as described above. Support and bend to such an appropriate holding state to form a continuous mountain-shaped bend continuously.

In addition, as shown in FIG. 2, the equipment of the present invention shown in FIG. 1 is installed on both sides of the base 1 in parallel, and it is efficient to perform bending processing on the wire rod in the opposite state. Wire bending can be done under balanced and stable conditions.

One embodiment of the deck plate for concrete structures obtained by using the reinforcing material obtained by the bending of the wire rod (rebar) as described above is as shown in Figures 4 and 5, for example, 5 to 6mm in diameter A mild steel wire is used as the lattice wire 101, and, for this lattice wire 101, for example, the first lattice material 101a which is bent to have a height of 170 mm and a height of 120 mm and a second of 60 mm in height. Truss obtained by preparing a lattice material 101b of the lattice material 101 and attaching the string members 102a and 102b having a diameter of 12 mm to the bent portions of the lattice materials 101a and 101b above and below the bent portion. Welding the hanging member 103 which was bent by the method of the present invention as described above with the wire rod having a diameter of 4 mm to 130, for example, the bending interval of the hanging members 103a and 103b having a thickness of 1 mm. In the vertically downward portion of the hanging member 103 in accordance with, for example For example, a deck having a height of 8 mm floating portion 104b is bent and a metal plate 104 having a small protrusion 104a having a height of 2 mm is formed on the floating portion 104b, and is sandwiched between electrodes to press-weld. Got a plate.

That is, even when the deck board obtained in this way was cast concrete of about 150 mm in thickness on the deck board, it was confirmed that all the weld parts were alive and there was no peeling part by the small protrusion.

[Effects of the Invention]

According to the present invention as described above, it is possible to efficiently and smoothly perform the bending forming of the deck plate reinforcing bar without using a special mold, and to perform a predetermined bending without damaging the wear of the mold. It is an invention that the industrial effect is great because the molding purpose can be achieved with the advantage of not increasing the cost and the number of processes due to the preparation and management or replacement thereof.

Claims (2)

Properly corrected rebar is gripped by the fixed rod 3 and the movable rod 5 provided so as to slide about the fixed rod 3 at a predetermined interval, and in such a state as to the axial direction of the reinforcing bar. Pressure bending means actuating in an intersecting direction acts on the middle part of the gripping reinforcement, and is bent between the gripping portions by respective chucks 3 and 5 of the reinforcing bar in the state where the movable rod 5 can slide. Reinforcing bar bending method for concrete structure deck plate, characterized in that the processing. Between the chucks 3, 5 having a fixed chuck 3 fixed to the base 1 and a movable chuck 5 for moving along the guide means 31 provided in the direction of the fixed chuck 3; A bend means guided by a guide mechanism provided along a direction intersecting with the arrangement direction of the guide means 31, a bend operation cylinder is provided for this bend means, and the movable rod 5 is also provided. A pressurizing / tensioning cylinder is provided, and together with the fixed rod 3, the movable rod 5 is attached to the transfer table 2, and the transfer cylinder is placed between the transfer table 2 and the base 1. (17) is installed, the reinforcing bar bending molding apparatus for a concrete structure deck plate, characterized in that the gap adjusting means 27 is installed between the movable chuck (5) and the base (1).