JP3068482U - Automatic bending device - Google Patents

Abstract

(57) [Problem] To provide a high-precision automatic bending device capable of bending a rebar or an iron plate at a low cost at 90 ° or more. SOLUTION: The rotation center position of the forward bending beam is fixed to reduce the number of related parts, and the space is widened by adopting a structure in which the rotation center of the reverse bending beam is linearly largely separated from the rotation center position of the forward bending beam. As a result, a reinforcing bar or a steel plate can be bent to 90 degrees or more with high accuracy and low cost.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an automatic bending device for reinforcing bars or steel plates. More particularly, the present invention relates to an automatic bending device for bending a reinforcing bar or a steel plate forward or backward by a bending beam having a fulcrum for rotation.

[0002]

[Prior art]

 As a device for automatically bending a reinforcing bar into a U-shape or an L-shape, for example, Japanese Patent Publication No. Hei 7-14536 “Bending device for assembled reinforcing bar” has been proposed. The bending device proposed above automatically rebars U-shape or L-shape, forward bending or reverse bending using a rotating beam, and the rotation center position of the rotating beam rotates the lever of the rotating member with a cylinder. As a result, the structure can be moved slightly.

[0003]

[Problems to be solved by the invention]

 However, in the bending device proposed above, the rotation center position of the rotating beam is only slightly movable because the rotation angle of the lever portion of the rotating member is restricted by the dimensions of the related components. Therefore, the rotation angle of the rotating beam is small, and it is difficult as a practical problem to bend the reinforcing bar to 90 degrees or more. SUMMARY OF THE INVENTION The present invention has been devised to solve the above problems, and has as its object to simplify the structure of a bending device, reduce the number of related parts, and reduce restrictions due to dimensions. Also, to provide a low-cost, high-precision automatic bending device that can reduce the interference of related parts by reducing the interference of related parts by making a structure that can move the rotation center position of the rotating beam to a large distance. As an issue.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, the automatic bending device of the present invention has a fixed fulcrum position for rotating a forward bending (clockwise) beam to reduce the number of parts, and a rotating fulcrum for a reverse bending (counterclockwise) beam. Instead of rotating, the position was moved in a straight line so that the moving distance could be increased. This increased the bending angle and improved the dimensional accuracy.

[0005]

[Embodiment of the invention]

 In the present invention, the rotation fulcrum position of the normal bending beam of the bending device is fixed, and the rotation fulcrum position of the reverse bending beam is linearly moved, so that the normal or reverse bending angle of the reinforcing bar or the iron plate can be conventionally (about 90 degrees). It became possible to make it larger. Hereinafter, an embodiment of the present invention will be described, and the present invention will be described in detail.

[0006]

【Example】

 FIG. 1 shows a front view of an automatic folding apparatus 1 of the present invention, and FIG. 2 shows a side view thereof. 1 and 2, a workpiece 2 (rebar or iron plate) is sent to an automatic bending device 1 by a transfer device (not shown), is automatically bent forward by a forward bending mechanism 3, and is reversely bent by a reverse bending mechanism 4. Bending is performed. The forward bending mechanism 3 includes a forward bending beam 5, fixed beds 6, columns 7, 8, cylinders 12 and 13, and cylinder receivers 14 and 15 attached to the fixed bed 6. The forward bending beam 5 bends the workpiece 2 by pivoting the centers of bearings 9 and 10 mounted on columns 7 and 8 mounted on the upper surface of a fixed bed 6 by cylinders 12 and 13.

The reverse bending mechanism 4 is attached to the upper surface of the movable bed 22 that reciprocates by the cylinder 18 in the traveling direction of the workpiece 2 along the linear guides 16 and 17 provided on the upper surface of the fixed bed 6. The center of the bearings 27, 28 attached to the columns 23, 24 via the linear guides 25, 26, the reverse bending beam 19 pivoted by cylinders 30, 31, and the bearing 27 installed on the upper surface of the moving bed 22. , 28 for raising and lowering the cylinders. The forward bending cylinders 12 and 13 are supported by cylinder receivers 14 and 15 mounted on the fixed bed 6, and the reverse bending cylinders 30 and 31 are supported by cylinder receivers 20 and 21 mounted on the upper surfaces of the columns 23 and 24. Supported by. The cylinder 18 is disposed on the fixed bed 6 via a cylinder receiver 34.

As is clear from the above description, the forward bending mechanism 3 does not have a mechanism for moving the bearings 9 and 10 up and down as in the prior art, so the manufacturing cost is low, and the space is not required because the space is not required. Thus, it is possible to provide a sufficient margin, and it is possible to increase the rotation angle of the forward bending beam 5. Thereby, the bending angle of the workpiece 2 can be increased (90 degrees or more). Also, since there is no mechanism for raising and lowering the bearings 9 and 10, there is no need for adjustment, and there is no backlash due to gaps between components, and the bending accuracy is improved.

In the reverse bending mechanism 4, the bearings 27 and 28 move up and down as in the prior art, but the manufacturing cost is low and the bending accuracy is improved because it is not of the link type but of the cylinder direct drive type. Further, the present invention is greatly different from the conventional one in that the reverse bending mechanism 4 can be largely moved by the cylinder 18 in the traveling direction of the workpiece 2. As a result, the workpiece 2 is largely separated from the positive bending mechanism 3, so that there is no interference with the normal bending mechanism 3 as in the related art, and the workpiece 2 can be bent to 90 degrees or more.

FIGS. 3 and 4 show a basic view of the bending process of the present invention, in which a forward bending is performed first, and then a reverse bending is performed. In each figure, (A) shows before bending and (B) shows after bending. In FIG. 3 (A), the workpiece 2 which has been fed forward by a certain length between the bending beams by a conveying device (not shown) has the forward bending beam 5 rotated clockwise as shown in FIG. 3 (B). Bends positively. Thereafter, the forward bending beam 5 rotates counterclockwise and returns to the original position.

Thereafter, the workpiece 2 is fed forward by a predetermined length by a transport device (not shown). Thereafter, the reverse bending beam 19 advances to the position shown in FIG. Next, as shown in FIG. 4B, the reverse bending beam 19 rotates the rotation center 29 in the counterclockwise direction to perform reverse bending. Thereafter, the reverse bending beam 19 rotates clockwise and returns to the original position, then retreats and returns to the position shown in FIG. FIG. 5 shows an example of a product 35 processed by the automatic bending device 1 of the present invention.

[0012]

[Effect of the invention]

 As is clear from the above description, the forward bending mechanism does not have a mechanism for moving the bearing up and down as in the past, so the manufacturing cost is low and the space is not required because there is no space. As a result, the rotation angle of the forward bending beam can be increased. Thereby, the bending angle of the workpiece can be increased (90 degrees or more). Also, since there is no mechanism for raising and lowering the bearing, there is no need for adjustment, and there is no backlash due to gaps between components, and the bending accuracy is improved. In the reverse bending mechanism, the bearing moves up and down when necessary, as in the past, but since the cylinder is a direct-acting type rather than a link type, the manufacturing cost is low and bending accuracy is improved. Another great advantage of the present invention is that the reverse bending mechanism can be largely moved by the cylinder in the traveling direction of the workpiece. As a result, since it is far away from the forward bending mechanism, there is no interference with the forward bending mechanism as in the related art, and the bending angle of the workpiece can be increased (90 degrees or more).

[Brief description of the drawings]

FIG. 1 is a front view of the automatic bending device of the present invention.

FIG. 2 is a side view of FIG. 1;

Fig. 3 Basic bending process diagram of the present invention

FIG. 4 is a basic process diagram of reverse bending according to the present invention.

FIG. 5 is an example of a product processed according to the present invention;

[Explanation of symbols]

1: Automatic bending device of the present invention 2: Workpiece (rebar or steel plate) 3: Forward bending mechanism 29: Bearing 2
7, 28 center 4: Reverse bending mechanism 30: Cylinder 5: Forward bending beam 31: Cylinder 6: Fixed bed 32: Cylinder 7: Support 33: Cylinder 8: Support 34: Cylinder receiving 9: Bearing 35: The present invention 10: Bearing products 11: Bearings 9, 10 center 12: Cylinder 13: Cylinder 14: Cylinder socket 15: Cylinder socket 16: Linear guide 17: Linear guide 18: Cylinder 19: Reverse Bending beam 20: Cylinder socket 21: Cylinder socket 22: Moving bed 23: Column 24: Column 25: Linear guide 26: Linear guide 27: Bearing 28: Bearing

Claims (1)

[Utility model registration claims] In an automatic bending apparatus for a reinforcing bar or an iron plate, a rotation fulcrum position of a forward bending (clockwise) beam is fixed, and a rotation fulcrum position of a reverse bending (counterclockwise) beam is set in a vertical direction and a vertical direction. An automatic bending device having a structure capable of moving linearly in the direction of movement of a workpiece.