JPS58209424A - Automatic bending apparatus for steel bar - Google Patents

Abstract

PURPOSE:To execute efficiently bending of a reinforcing bar without variations, by arranging in order plural reinforcing bars, and thereafter, executing the bending by turning a rotary roll centering around a bending die, and also changing suitably a position of the bending die against the reinforcing bar. CONSTITUTION:A necessary number of reinforcing bars 3 are placed on a fixed unit 1 and a moving unit 2, and the end faces of the reinforcing bars 3 are arranged in order by pushing cylinders S1, S2. Subsequently, they are brawn, and also the cylinder S1 is shunted by the cylinder S2. The moving unit 2 is moved to the fixed unit 1 side by length A, a rotating roll 42 is rotated centering around a bending die 52, and the bending is executed to a necessary angle by length A. Subsequently, the rotating roll 42 is returned to its original state, also the moving unit 2 is moved by length B, the rotating roll 42 is rotated centering around the bending die 52 again, and the bending is executed to a necessary angle by length B. In this regard, the worked reinforcing bar 3 is carried out automatically by cylinders S3, S4.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bending device for bending metal materials, such as non-metallic materials, metal plates, etc., into a desired shape. This relates to an automatic bending device G for stirrup strips, etc.

In general, metal materials such as reinforced concrete bars (hereinafter referred to as reinforcing steel bars) are shaped into various shapes depending on the shape and strength of the concrete structure to be constructed.
reinforced concrete and reinforced within the concrete. Therefore, reinforcing rods of various diameters must be bent at various bending radii and at various bending angles.

Traditionally, this type of work was done by manually bending the reinforcing bar one by one, or by using an automatic bending machine (hereinafter referred to as "dobengu").
I was trying to use it to bend and edit.

Therefore, although the former method can be applied to various bending shapes, it is inefficient, and furthermore, if several pieces of the same shape are bent, variations in shape may occur.

Furthermore, with the latter method, it is necessary to replace the bending die and presser foot, which are the main components of the machine, every time the structure of the machine, the diameter of the reinforcing bar, or the bending radius changes. In addition, many conventional automatic benders have limitations on product size, ie, molding size, due to the size of the pengu itself.

A reasonable invention was made as a result of research to solve these problems, and when the reinforcing bar is set in a feeding device, it automatically feeds the G-shaped material and bends it to the required size. It is an object of the present invention to provide an automatic bending device for steel bars that is then unloaded.

■The automatic steel bar bending device of the present invention that achieves the second object is equipped with an air cylinder for aligning the end faces of the steel bar, an air cylinder for unloading the steel bar, a bending die, and a rotary roller that can rotate around the bending die. The device is characterized in that it is composed of a fixed unit and a moving unit, and the moving unit is configured to be movable toward the fixed unit.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the embodiments of the present invention will be explained based on the embodiments shown in the figures.

FIGS. 1(a) to 1(d) show an example in which the processing apparatus of the present invention is applied to forming υ11 of hookless reinforcement. As shown in FIG. 1(a), the rag l device of the present invention includes a fixed unit 1 and a moving unit 2), and the fixed unit 1 includes a rotating roller 41, a bending die 51,
Cylinders S5 and S3 are provided, and the moving unit 2 is provided with a rotating roller 42, a bending mold 52, and cylinders sl, s2, and S4, respectively, as shown in the figure. It is in a state where the reinforcing bar 6, which is a ball, is passed through.

The reinforcing bars 6 can be placed between the units mentioned above after the required number of reinforcing bars 6 is counted in advance by an automatic feeding device (not shown).Moreover, the moving unit 2 is driven by an electric motor (not shown) or the like with L. , fixed unit 1
It is configured to move in the V-line along the extending direction of the reinforcing bars 6. Further, the rotating roller 42 of the moving unit 2 is configured so that it can be rotated by a hydraulic motor or the like on an arc centered on the bending mold 52.

Now, the required number of reinforcing bars 3 are supplied by the feeding device as shown in Fig. 1(a).
As shown in the figure, after being arranged between the rollers and bending dies of each unit, the cylinder S is arranged facing the end face of the reinforcing bar 6;
Press and operate S5 to align the end faces of the reinforcing bars 6. After aligning, operate the air cylinders S and S5 to pull, and then press the air cylinder S5, which is integrally connected to the tip of the air cylinder S2. S1 is the N pull of air cylinder S2.
The action causes the reinforcing bar 6 to separate from the extending direction (as shown by the dotted line).

When the alignment of the reinforcing bars 6 and the movement of the alignment air cylinder S1 are completed, the moving unit 2 moves toward the fixed unit 1 to the position shown in FIG. 1(b). This (the final movement position is 52σ month of bending in moving unit 2) γ position is the length A from the right end of the reinforcing bar 6 in Fig. 1 (a) (moved by 1 to the first bending position r) At this first bending position 1, as shown in FIG. Then (as shown by the dotted line), the portion of length A is bent and pressurized at a required angle.At this time, the cylinder S4 receives the reaction force due to the bending from the reinforcing steel.After bending and pressurizing, the rotating roller 42 C; (Return to point (as shown by solid line).

Furthermore, the moving unit 2 is moved to the position 1a shown in FIG. 1(C). That is, the bending die 52 is moved from the position of the bending die 52 shown in FIG. And 1.
Similar to the first bending described above, the rotating roller 42 is rotated (as shown by the dotted line) to bend the reinforcing bar to a required angle.

After the second bending process is completed and the rotating roller 42 returns to its origin (as shown by the solid line), the fixed unit 1 and the moving unit 2 are bent 1151 and 52 into each unit by a mechanism G (not shown). Submerged and stored, reinforcing bar 6
An unloading cylinder S3 r arranged orthogonally to
By pressing 84, the reinforcing bars 6 that have been bent can be automatically carried out from each unit as shown in FIG. 1(d).

After carrying out the reinforcing bars 6, the moving unit 2 returns to the reinforcing bar end face alignment position (original position) shown in FIG.

Figures 2 (,) to (f) also show the processing operation of hooked bars using the 1JII machine of this invention, especially the IJII of the closed type stirrup whose operation is the most complicated.
is shown for two operations.

After the supply of reinforcing bars 6 is finished, the alignment cylinders 81 + 82 and Ss are pressed and operated to align the end faces of the reinforcing bars 6 in the same manner as described in FIGS. 1(a) to (d). After alignment. S
, , s2 and Ss are both moved to "pull" to remove the cylinders S! and Ss from the end of the reinforcing bar 6.

First, in the original position shown in FIG. 2(a), the rotating rollers 41 and 42 are bent around the bending molds 51 and 52 in the position of the fixed unit 1 and the moving unit 2 as shown in FIG. 2(b).
) is rotated toward the end of the reinforcing bar 6 as shown by the dotted line, and the first bending is performed so that both ends of the reinforcing bar 6 are wrapped around each of the bending dies 51 and 52. After the first bending process, the rotating roller 41 of the fixed unit 1
Rotates when bending IJII.

Only the rotating roller 42 of the moving unit 2 returns to the original position shown in FIG. 2(a).

Next, the moving unit 2 moves the bending mold 52 toward the fixed L-t 1 side in order to move the bending die 52 to the position shown in FIG. Then, as shown in FIG. 2(c), a portion of length A is bent at a right angle by rotation of the rotating roller 42 and pressurized.

Furthermore, the mobile unit 2 is moved to a third location shown in FIG. 2(d).
The reinforcing bar 6 is moved by the length B to be pressurized in the second bending process, and the reinforcing bar 6 is bent at right angles again, and then the length to be applied 1- in the fourth bending process is as shown in FIG. 2(e). Move the reinforcing bar 6 by A and bend the reinforcing bar 6 at a right angle by +j4. At this time, an air cylinder installed in the carry-out table (not shown) is used to prevent the tips of the reinforcing bars 6 from intersecting with each other. l
A rotating roller 4 is constructed such that a slope 6 is formed on the slope 6 and the tip of one side is applied along the slope 6.
1 and 42 are both returned to the original position of each unit 1- (as shown in FIG. 2(a)), and then the tilt 6 of the table is released.

With the above additions, the addition of the rectangular closed type stirrup bar is completed as shown in FIG.
The product can be transported as shown in the figure.

After being carried out, the mobile unit returns to the end alignment position (original position) of the reinforcing bars 6 shown in Fig. 2(a), and can repeat the bending and cutting process as many times as necessary. The automatic steel bar bending IJll device of the present invention includes a fixed unit each equipped with a finishing sill for aligning the end faces of the steel bar, an air cylinder for carrying out the bar, a bending die, and a rotary roller capable of rotating around the bending die. Since the unit is configured to be movable toward the fixed unit, it is possible to not only automatically bend the reinforcing bars up to the time of carrying them out, but also bend the reinforcing bars 1: bend and pressurize Unisoto itself. It is very effective in practical use because it can be moved to a certain position to perform additions, and there are no practical size limitations.

[Brief explanation of drawings]

The figures show an automatic steel bar bending device according to an embodiment of the present invention. -i':
(f) is 111J. L/) This is an example of IJII. 1.Fixed unit, 2.Moving unit, 6.Reinforcement bar, 41.42.Rotating roller, 51, 52.Bending TQJ, 6.Inclination, s, , S2. Ss,
s4. Ss...Cylinder. Agent J1 Physician Makoto Ogawa - Patent Attorney No (I Ken Teru Patent Attorney 1: Kazuhiko Saicho Figure 2 5152 (b) (C)

Claims (1)

[Claims] It consists of a fixed unit and a moving unit each equipped with an air cylinder for aligning the end faces of the steel bar, an L cylinder for carrying out the bar, a bending die, and a rotating roller capable of rotating around the bending die, and the moving unit is connected to the fixed unit. Steel bar automatic bending I characterized by being configured to be movable toward
JI+, 1-device 6°