JPS6232653Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a forming device for forming reinforcing bars and the like into a corrugated shape.

A fixed rail and a movable rail that can approach and move away from the rail support multiple columns, one of the columns is fixed to the rail, and the remaining columns are fixed. It is movably supported along the rail, fixed rail columns and movable rail columns are arranged alternately, adjacent columns are connected by links, and clamped to the ends of the columns on both sides of the mutually connected columns. A device is installed, a forming guide is attached to the end of the remaining support, and the end of a formed member such as a reinforcing bar supported by the forming guide of the rail support is clamped by the clamp device, and then the movable rail is separated from the fixed rail. The present applicant has already proposed a forming apparatus that forms the material to be formed into a corrugated shape (Utility Application No. 104421/1983, Utility Model Application No.
Publication No. 60-11118. ) By the way, since the above-mentioned molding device is configured to move a movably supported support column toward a fixed support column by bending the member to be formed,
The force that pulls the movably supported column toward the fixed column gradually decreases as the bending angle of the member to be formed increases, and there is the disadvantage that it is not possible to obtain a corrugated product with an acute bending angle. .

Therefore, the object of this invention is to provide a molding apparatus which eliminates the above-mentioned disadvantages and makes it possible to obtain a corrugated product with an acute bending angle.

In order to achieve the above object, this invention provides an air cylinder that can press at least both sides of movable columns connected to each other by links toward a fixed column, and When molding a product, an air cylinder is operated to push a movably supported column toward a fixed column.

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

As shown in FIGS. 1 and 2, the fixed frame 1
is provided with side frames 2 on both sides, and a pair of guide tubes 3 are attached to the sides of the side frames 2.

A movable frame 4 is arranged above the fixed frame 1,
Side frames 5 are provided at both ends of the movable frame 4, and a pair of rods 6 attached to the lower surface of the side frames 5 are slidably inserted into the guide cylinder 3.

Further, a piston rod 8 of a cylinder 7 attached to the side frame 2 of the fixed frame 1 is connected to the side frame 5 of the movable frame 4.

Rails 9 and 10 are provided between the side frames 2 of the fixed frame 1 and between the side frames 5 of the movable frame 4, respectively. As shown in FIGS. 5 and 6, these rails 9 and 10 are arranged in parallel in the front and back with a required interval between the rails 9, and are arranged in pairs, with a required interval between the rails 9. A plurality of lower struts 11 are inserted through the movable frame 4, and a plurality of upper struts 12 are inserted between the rails 10 of the movable frame 4.

One of the upper struts 12 is fixed to the rail (indicated by the reference numeral 12' in FIG. 1), and the remaining upper struts 12 and lower struts 11 each have rollers that sandwich the rails 9 and 10 from above and below. It is movably supported by 13.

The lower struts 11 and the upper struts 12 are arranged alternately, and the adjacent struts 11 and 12 are
They are interconnected by links 14.

In addition, the upper part of the lower support 11 and the upper support 12
A molding guide 15 is attached to the lower part of the upper strut 12, and the molding guide 15 of the upper strut 12 is located lower than the molding guide 15 of the lower strut 11.
Both ends of the to-be-molded member A placed on the forming guide 15 of No. 2 are connected to the supports 11 and
It is clamped by clamp devices 20 attached to pillars on both sides of 12.

In the illustrated embodiment, clamping devices 2 are attached to lower supports 11 on both sides supported by rails 9 of fixed frame 1.
0 is set. The clamping device 20 is the sixth
As shown in the figure, a guide tube 21 is attached below the forming guide 15, and the inclined surface 23 at the lower end of the clamping body 22 inserted into the guide tube 21 comes into contact with the upper inclined surface 25 of the wedge 24 arranged below. The wedge 24 is connected to a piston rod 27 of a cylinder 26 attached to the lower strut 11, so that horizontal movement of the wedge 24 causes the clamp 22 to move up and down.

Further, a discharge guide 16 is attached to the lower support column 11 below the forming guide 15, and the discharge guide 16 is attached to the bottom of the forming guide 15.
6 is formed into an inclined surface 17, and the inclined surface 17
The molded product is allowed to slide down along the (see Fig. 5).

A pair of air cylinders 30 are attached to both ends of the rail 10 of the movable frame 4, and the tips of their piston rods 31 are connected to upper supports 12 located at both ends of the rail 10.

The molding device shown in the example has the above structure,
This forming device places a workpiece A such as a reinforcing bar on a forming guide 15 of an upper support 12, clamps both ends of the workpiece A with a clamp device 20, and then raises a movable frame 4. The object to be formed A is formed into a corrugated shape.

Now, after clamping both ends of the object A placed on the forming guide 15 of the upper support 12 with the clamp device 20, the cylinder 7 attached to the side frame 2 of the fixed frame 1 is actuated to move the movable frame. When increasing 4,
When the forming guides 15 of the lower strut 11 engage with the lower side of the object to be formed, and the movable frame 4 rises above it, the object to be formed A is bent by each forming guide 15 and is bent along the rails 9 and 10. As the object A is bent, each support column 11 and 12 movably supported is pulled inward and moved in the direction of the fixed support column 12', and as a result, the object A is formed into a wave shape. .

The bending angle of the object to be formed differs depending on the amount of rise of the movable frame 4, and when the amount of rise is increased, the bending angle becomes acute as shown in FIG.
A′ can be obtained, but the larger the bending angle, the movably supported column 1
1 and 12 inward (pulling force in the direction of the fixed support column 12') becomes weaker, and if the movable frame 4 is forcibly raised in an attempt to reduce the bending angle of the molded object, the rails 9, 10 may be bent or the forming guide 15 may be damaged.

Therefore, when the air cylinder 30 is actuated to advance the piston rod 31 during wave forming of the molded object, the piston rod 31 moves the columns 11 and 12 movably supported to the fixed column 1.
2', the movably supported columns 11 and 12 are subjected to the attractive force caused by the bending of the object A and the pressing force of the cylinder 30, and as a result, the object is bent. Even when the angle is increased, it can be bent very easily, and a molded product with a small bending angle can be easily formed.

In addition, in the case of the embodiment, the rail 10 of the movable frame 4
The air cylinder 30 connects the struts 12 located on both sides of the
However, the number of air cylinders 30 is arbitrary, and the supports 11, 1 of each rail 9, 10
The piston rod 31 of the air cylinder 30 may be connected to each of the two.

In addition, in the case of the embodiment, the rail 10 of the movable frame 4
The object to be formed is placed on the forming guide 15 of the upper support column 12 supported by the movable frame 4, and the object to be formed is formed into a wave shape by raising the movable frame 4. It is also possible to place the object on the forming guide of the support column and form the object into a wave shape by the downward movement of the movable frame.

As described above, according to this invention, the object to be formed is placed on the forming guide of the column supported by one rail, and both ends of the object are clamped by the clamping device, and then one of the pair of rails is placed. The above-mentioned object to be formed can be formed into a wave shape by a simple operation of moving the rails, and since it has a simple structure in which the rails are moved up and down by a pair of cylinders, the cost is low and assembly is easy.

In particular, the support column movably supported by the rail is pushed in the direction of the fixed column by an air cylinder, so even if the bending angle of the workpiece is increased, the rail and the support column supported by the rail will not move. No unreasonable force is applied to the forming guide, and objects with small bending angles can be formed very easily.

In addition, since the air cylinder pushes the support inward, even if the air cylinder pushes the support after the rail has been moved to the specified position, the air cylinder will not be supplied with air. The air is only compressed, and the column does not move, making it easy to control the air cylinder.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the molding device according to the invention, Fig. 2 is a side view of the same, Fig. 3 is a front view showing an enlarged right side of Fig. 1, and Fig. 4. is a front view showing the operating state of the same as above, FIG. 5 is a longitudinal side view showing the support part of the lower column of the above, FIG. 6 is a longitudinal side view of the same as the above clamping device, and FIGS. 7 and 8 are the same as the above. FIG. 2 is a front view showing a part of a molded product molded in the apparatus of FIG. 7...Cylinder, 9, 10...Rail, 11...
...Lower support, 12...Upper support, 12'...Fixed support, 14...Link, 15...Forming guide,
20... Clamp device, 30... Air cylinder.

Claims (1)

[Scope of utility model registration request] A drive device is installed to move a movable rail toward and away from a fixed rail that extends in the horizontal direction.
Among the plurality of columns supported by both rails, one is fixed to the rail, the remaining columns are movably supported along each rail, and the columns of the fixed rail and the columns of the movable rail are arranged alternately, Adjacent columns are connected to each other with links, and among the connected columns, a clamp device is installed at the ends of both columns, and a forming guide is attached to the ends of the remaining columns, and the fixed rail columns are fixed. The molding guide of the movable rail and the molding guide of the support of the movable rail are shifted in the vertical direction, and an air cylinder is provided that can press the support of at least both sides of the support supported movably along the rail toward the fixed support. Forming equipment for corrugated reinforcing bars, etc.