JPH043698Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a reinforcing bar bending machine, and more specifically, it is used to bend linear reinforcing bars, mesh assembled reinforcing bars, etc. into concave or convex shapes. This invention relates to a reinforcing bar bending machine suitable for cold working.

[Conventional technology]

Linear reinforcing bars are usually bent manually using a bending machine. In addition, the reticular reinforcing bars formed by combining vertical reinforcements and horizontal reinforcements are made by combining horizontal reinforcements with vertical reinforcements that have been bent into a predetermined shape using a bending machine.

[The problem that the idea aims to solve]

However, in the case of bending the reinforcing bars as described above, there are the following problems. In other words, bending is inefficient due to dimensioning, etc.
Insufficient accuracy.

It is difficult to bend mesh reinforcing bars directly.

When manufacturing reinforced concrete gutter blocks, efficiency is reduced.

There are other problems.

The present invention was created in response to the above-mentioned problems, and its purpose is to easily bend linear reinforcing bars and mesh reinforcing bars into concave and convex shapes by cold working. The object of the present invention is to provide a reinforcing bar bending machine that can improve productivity.

[Means to solve the problem]

The reinforcing bar bending machine of the present invention as a means for solving the above problems includes an inclined loading frame, a band-shaped pressure receiving table provided at the lower end extension of the placing frame, and a lower half of the pressure receiving table. an upright piece mechanism having an upright piece capable of standing up and falling down, the upper edge of which is formed into a roof shape when upright, and whose upper surface forms the same surface as the pressure receiving table when down; A folding frame mechanism having a folding frame body that changes its inclination angle around a horizontal axis and forms the same surface as the above-mentioned frame and the pressure receiving base in a collapsed state, and a groove portion facing the upper end edge of the above-mentioned upright piece when standing up. A clamping mechanism having a vertically swingable clamping piece that presses and holds the reinforcing bar against the frame, and a feeding mechanism that moves the clamping piece in the front-rear direction.

[Effect]

The reinforcing bar bending machine of the present invention places the reinforcing bars to be bent on a mounting frame, places the bent part of the reinforcing bars on a pressure receiving table, and when bending the reinforcing bars into a concave shape, lowers the pressing frame and bends the reinforcing bars. After pressing and fixing the reinforcing bars onto the pressure receiving table, the bending frame body is rotated upward to bend the reinforcing bars into a concave shape at a predetermined angle, and when bending the reinforcing bars into a convex shape, the clamping piece is attached to the reinforcing bar. The reinforcing bar is moved forward and backward by a feeding device according to its length, and the reinforcing bar is held by the clamping piece. Next, the upright piece is erected, the pressing frame is lowered, and the upright piece is moved through the reinforcing bar. After the reinforcing bars are brought into contact with the reinforcing bars and the reinforcing bars are held, the state in which the reinforcing bars are held by the clamping pieces is gradually loosened, and the pressing pieces are lowered to bend the reinforcing bars into a convex shape.

〔Example〕

Two guide rods 1c, 1c are fixed to the mounting frame 1.

The feeding device 6 will be explained. A moving member 6a is slidably supported on guide rods 1c, 1c. A screw rod 6b rotatably supported on the mounting frame 1 is screwed into the moving member 6a, and a forward/reverse motor 6c
When rotated, the screw rod 6b rotates via the timing belt 6d, causing the moving member 6a to move forward and backward. The position of the moving member 6a is controlled by a rotation angle control device 6f.

The holding mechanism 5 will be explained. A clamping piece 5a is pivoted to a bracket 5b fixed to the moving member 6a, and the clamping piece 5a presses the reinforcing bar 7 against the moving member 6a in response to the expansion and contraction of the fluid cylinder 5c attached to the moving member 6a. Or they are starting to open up.

The movable member 6a is provided with recesses 6e, 6e, and the vertical frames 1d, 1d are fitted into the recesses 6e, 6e with a gap maintained, and both upper and lower ends of the vertical frames 1d, 1d are aligned with the mounting frame 1. It makes up the department.

The folding frame mechanism 3 will be explained. A fluid cylinder 3d is arranged between an arm 3c fixed to the bending frame main body 3a and a frame 1a of the mounting frame 1. The degree of expansion of the fluid cylinder 3d, that is, the rotation angle of the bending frame body 3a is determined by the limit switch 3e...3
Controlled by e.

The upright piece mechanism 2 will be explained. When the plunger 2e of the fluid cylinder 2d fixed to the frame 1a of the mounting frame 1 is extended, the upright piece main body 2a is raised as shown in FIG.

The pressing mechanism 4 will be explained. When the fluid cylinder 4c attached to the frame 1a of the mounting frame 1 is extended, the pressing frame 4a is lowered, and when the fluid pressure cylinder 4c is contracted, the pressing frame 4a is raised.

When the reinforcing bar 7 is sent after shortening the plunger 2e, the upright piece main body 2a falls down.

Also, a limit switch 3e, a rotation angle control device 6f, a fluid cylinder 2d, a fluid cylinder 3d, a fluid cylinder 4c, and a fluid cylinder 5.
A sequencer (not shown) is disposed between the forward and reverse motors 6c and 6c to automatically control each process procedure.

The reinforcing bar bending machine of this embodiment described above is
First, the reinforcing bar 7 to be bent on the mounting frame 1
At the same time, the bent part of the reinforcing bar 7 is positioned on the pressure receiving base 1b of the frame 1a, and the clamping piece 4a of the clamping mechanism 5 is moved to the tip part of the reinforcing bar 7 by the moving member 6a of the feeding device 6, 7 is held by the clamping piece 4a. Here, as the reinforcing bars 7, a reticular reinforcing bar formed in advance by combining vertical bars 7a and horizontal bars 7b is used (see FIG. 11).

Next, in this state, set the reinforcing bar 7 in a concave shape (45 degrees, 90 degrees).
In order to bend the fluid cylinder 4c in the pressing mechanism 4, as shown in FIGS.
By lowering the pressing frame 4a through the press frame 4a, pressing and fixing the reinforcing bar 7 onto the pressure receiving table 1b, and then rotating the bending frame 3a in the upward direction α (45 degrees, 90 degrees),
Perform concave bending. In addition, when bending the reinforcing bar 7 into a convex shape, the reinforcing bar 7 is held by the clamping piece 4a, and then the upright piece 2a of the upright piece mechanism 2 is raised, and the pressing frame 4a is lowered, and the reinforcing bar 7 is bent through the reinforcing bar 7. After making contact with the piece 4a and holding the reinforcing bar 7, the holding state of the reinforcing bar 7 by the clamp 4a is gradually loosened, and the pressing piece 4a is lowered. This can be done by first holding and fixing the reinforcing bars 7 by the pressing frame 4a and the upright piece 2a, so that even if the reinforcing bars 7 rise above the mounting frame 1, the reinforcing bars 7
This is because the reinforcing bars 7 are held in a state where they do not move, and the front and rear ends of the reinforcing bars 7 are free ends, thereby avoiding the possibility that only a portion of the reinforcing bars 7 may be deformed by the pressing pieces 4a. Then, it is bent at a predetermined angle β into a convex shape.

It should be noted that the present invention is not limited to the embodiments described above, and includes modifications that can be made without changing the gist of the present invention. Incidentally, it goes without saying that the size and groove shape of the pressing piece in the pressing mechanism can be made into various forms depending on the size and length of the reinforcing bar, and the length and size of the upright piece also depend on the size of the reinforcing bar. It goes without saying that it can be made into various forms depending on the length of the sheath and the like.

[Effect of idea]

According to the present invention, flat reinforcing bars assembled in a net shape can be quickly bent into uneven shapes by cold working, which can significantly improve efficiency. This is particularly advantageous for making reinforcing bars 7 for reinforced concrete groove blocks 8 as shown in FIG.

[Brief explanation of the drawing]

Figures 1 to 9 show an example of a reinforcing bar bending machine according to this invention. −
This is a perspective view. Figures 4 to 6 are side views showing the function of the bending frame mechanism. Figure 4 is a side view when feeding reinforcing bars, Figure 5 is a side view when bending at 45 degrees, and Figure 6 is a side view showing the operation of the bending frame mechanism. FIG. 3 is a side view when bent 90 degrees.
Figures 7 to 9 are side views showing the operation of the upright piece mechanism; Figure 7 is a side view when feeding reinforcing bars;
The figure is a side view of the stand-up piece body when it is erected.
The figure is a side view when bent 45 degrees in the opposite direction. Figures 10 to 14 show the reinforcing bars in the bending state; Figure 10 is a side view of the reinforcing bars before processing;
Figure 1 is a plan view of Figure 10, Figure 12 is a side view bent at 45 degrees, Figure 13 is a side view bent at 90 degrees, and Figure 14 is a side view bent at 45 degrees in the opposite direction. It is a diagram. FIG. 15 is a front view showing an example of the manufactured concrete groove block with bent reinforcement. 1... Frame, 1a... Frame, 1b... Pressure receiving base, 1c... Guide rod, 1d... Vertical frame, 2... Standing piece mechanism, 2a... Standing piece main body, 2b... Upper edge, 2c ...Top surface, 2d...Fluid cylinder, 2
e...Plunger, 3...Bending frame mechanism, 3a
...Folding frame body, 3b...Horizontal axis, 3c...
Arm, 3d...Fluid cylinder, 3e...Limit switch, 4...Press mechanism, 4a...Press frame, 4b...Groove, 4c...Fluid cylinder, 5
. . . Holding mechanism, 5 a . . . Holding piece, 5 b . . . Bracket, 5 c .
Forward/reverse motor, 6d...Timing belt, 6
e...Concave notch, 6f...Rotation angle control device, 7...
Reinforcement bar, 7a...Vertical bar, 7b...Horizontal bar, 8...Concrete groove block.

Claims (1)

[Scope of utility model registration request] An inclined loading frame, a band-shaped pressure receiving base provided at the lower end extension of the loading frame, the lower half of the pressure receiving base can be raised and lowered, and the upper edge when raised is formed into a roof shape, and an upright piece mechanism having an upright piece whose upper surface forms the same surface as the pressure receiving table when it is collapsed; and an upright piece mechanism that changes the inclination angle around a horizontal axis on an extension of the upright piece, and which allows the above-mentioned frame and pressure receiving table to be connected to each other in the laid down state; a folding frame mechanism having folding frame bodies forming the same plane; a pressing frame having a groove portion facing the upper end edge of the standing piece when standing up; and a vertically swinging frame that presses and holds reinforcing bars against the frame. 1. A reinforcing bar bending machine comprising: a clamping mechanism having a clamping piece; and a feeding mechanism that moves the clamping piece in the front-rear direction.