JPS59174222A - Bending machine - Google Patents

Abstract

PURPOSE:To work two bending parts of opposite bending direction by one operation in a working machine that places a barlike material to be worked between a guide roller and a bending roller and receives reaction force at the time of bending by a reaction force member, by providing a second reaction force member. CONSTITUTION:A bending roller 4 on a disk 3 can reciprocate within nearly a quarter of a circle around an origin O on a table 1. A guide roller 8, and the first reaction force member 9, second reaction force member 17 are provided respectively to the inside and outside of the locus of moving. Small diameter parts of members 9, 17 are inserted into fitting holes 10, 16 of a slider 5 and table 1 respectively. Position of the former can be adjusted in thd direction of X, Y axes by movement of the slider 5, and that of the latter can be adjusted by selection of the hole 16. Position of the slider 5 is adjusted first, angle of rotation of the disk 3 is set, a member 9 having proper diameter of large diameter part according to diameter (d) of the work, and similar member 17 is inserted into proper hole 16. A material A to be worked is inserted from between the roller 8 and member 9 and brought into contact with properly position adjusted stopper 14 and the roller 4 is rotated. Thus, bending to Z-form can be performed by one operation.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bending machine for bending rod-shaped workpieces such as reinforcing bars.

In this type of bending machine, the bending roller is generally placed between the workpiece guide roller and the bending roller, and the reaction force when bending the workpiece is received by the reaction force member, and the bending roller moves around the guide roller. Bending at a predetermined angle is performed by revolving in one direction, for example, clockwise. And after finishing the processing,
It revolves around the bending roller counterclockwise and returns to the starting point pupil. In other words, only one bending process can be performed with one height operation.

Therefore, for example, if a number of pieces, such as lightning lines, have parts, and the direction of machining is reversed, it is possible to change the direction of the workpiece each time. I had to reverse it and use the bending sword Loele.

This reversing work is hard work that increases the fatigue of the operator and is also undesirable from a safety standpoint. There were problems such as the entire bending process had to be interrupted for a considerable period of time, making it impossible to perform the process efficiently.

This invention has been made in view of the above-mentioned circumstances, and its purpose is to bend the bending direction in the opposite direction.
This is intended to be used in a bending machine that can process bent portions in one operation.

The bending machine of this invention has an X-axis on the table.

A bending roller that is reciprocated in a variable y-movement range with pronation at approximately four semicircular nodes centered on the origin of the Y-axis, a guide roller provided at a circle 1111 of the movement locus of this bending roller, and this guide. A first reaction force member disposed in the X-axis direction in cooperation with the roller to receive the reaction chipping during the first bending of the workpiece; and a second reaction force member which can be used to generate a reaction force during the second bending.
The second reaction force member is provided so that at least its position in the X-axis direction can be adjusted.

An embodiment of the present invention will be described below with reference to the drawings. 1 in the diagram
is a rectangular table on the upper surface of the housing, and this table has an arcuate slot 2 centered on the origin 5 of the X-axis and Y@, which serves as the path of the roller 4. A disk 3 is provided in the upper extending housing of the table 1 and is rotatably driven by a drive device (not shown) about the origin convex, and a bending roller 4 projects from this disk onto the table 1. It is set up like this. bending roller 4
A control mechanism is incorporated into the drive device for the disk 3 to move the disk 3 forward and backward within the slot 2 within a predetermined angular range of approximately four semicircles from the starting position shown in FIG. , is.

5 is a slider that is installed in the table 1 so that it is flush with the table 1 at the inner center 1 of the slot 2, and is fixedly attached to the table 1.
'r: The slide is slid in the direction of the arrow shown in the figure by a drive mechanism 7 attached to the stand 6 in accordance with the scale 5a. A guide roller 8 is attached to this slider 5.

The slider 5 is also provided with a hole 10 into which the entire small diameter portion of the stepped roller, which is the first reaction force member 9, is inserted. The stepped roller, which is the first reaction force member 9, cooperates with the guide roller 8 to receive the reaction force during one bending process. -C bending roller 8 according to the diameter of
Several types with different large diameter dimensions are available to allow full adjustment of the distance between the two. By moving the slider 5 in the upper position, the position of the guide roller 8 and the first reaction member 9 can be adjusted simultaneously in both the X-axis and Y-axis directions while maintaining the position relative to the guide roller 8. Ru. 15 is a sizing device, which is attached to the slider 5 by extending in the X direction 1).
[A stopper arm 13 shouldering the scale 133 at the tip,
The stopper 14 is clamped to this stopper arm by a handle 14R.

168 to 16d are the openings 7 at positions substantially opposite to the outer groove l'''c of the arcuate slot 2 of the table l, and the first reaction force part 9;
The holes for the second reaction force control 7jW are spaced apart from each other on the (9) upper and lower left slope line.The second reaction force member 17 By inserting and positioning the small diameter part into the above-mentioned receiving holes 16a-16d using a stepped roller similar to 9, the position can be adjusted in the X-axis direction as well as in the X-axis direction corresponding to the end point position 4' of the bending roller 4. Also, like the first reaction force member 9, there are several types with different large diameter parts so that the distance between the end point and the bending roller can be adjusted according to the diameter of the workpiece A. It is prepared.

The procedure for bending a lightning bolt using a bending machine having the upper mesh e configuration will be explained with reference to FIGS. 2 and 3.

In addition to the vector radius d, the length of the upper side, tl%, the length of the hypotenuse, O2, and the length t3 between the ends of the upper side and the hypotenuse are generally specified as the dimensions of one straight line. If the length of the three sides is specified, the shape of the triangle will be % smaller, so considering the radius df,
The relative positional dimension X between the guide roller 8 and the rotation end position 4' of the curved roller 4.

y is determined. In order to add sound and light to these x and y dimensions, first adjust the position of the slider 5, and then install the roller 4.
How to set the rotation angle of Deru Tisfu 3? Let's do it. Next, all stepped rollers, which are the first reaction force members 9, having large diameter portion dimensions corresponding to the radius vector d are set. In addition, the curve is determined by selecting the diameter of the large diameter part of the second reaction force member 19 and the mounting position in the Y-axis direction in accordance with the rotation end position 4' of the roller. Positioning money. Finally, adjust the position of the stopper 14 of foot size #15 to the length 11 of the upper side from the guide roller 8.
The length L4 is set at a position corresponding to the sum of the length t2 of the oblique side and the length t2 of the oblique side. With the above, the setup for bending is completed.

In the bending process, first, the workpiece A' is inserted between the guide roller 8 and the first reaction member 9 as shown in FIG. 2, and brought into contact with the stopper 14 of the tip sizing device 15. Next, activate Tisfu 3 (b). The workpiece A has the guide roller 8 as a fulcrum, and the curve is as follows: roller 4, 9, bend fL.
While the workpiece A is in the state shown in the imaginary line A where it hits the second reaction force member 17Vc, the first song is almost completely sung by the sword 481. The reaction force during this time is received by the first reaction force member 9.

From this state, as the song progresses, the roller 4 continues further to the end point position 4.
Rotate to '. At this time, the workpiece A is supported by the guide roller 8 and the second reaction member 17, and the f1 bending roller 4
After pressing and bending, the bending force of the second bending part b1 and the bending force of the first bending part a1 are completed and the bending force is applied to the Z shape shown in the imaginary line diagnosis.

Next, when the tilt roller 4 is rotated in the opposite direction and the bending roller 4 returns to the starting position, the workpiece A? It is fed in the state shown in FIG. 3, where the first bent portion a1 hits the stopper 14 of the foot size device 15. Next, I decided to start all Tisfu 3 again.
In the same manner as described above, the first bending part a2 and the second bending part b2 of the second stage are bent, and the bending work of the second stage is completed. In this way, the first piece of workpiece A can be machined by simply moving the first part of the work piece A horizontally through the groove that hits the entire stopper and then processing the piece, and the piece can be processed almost continuously with the lightning bolts. . In addition, by positioning and setting the valley, it is possible to perform a 1C valley grade eggplant one-line spacing according to the specification dimensions.

The above '*)I examples are from a range of commonly used cases.
In order to achieve the bending of the muscle with zero force and a relatively simple device construction, a guide roller 8 and a first reaction member 9 are attached to the slider 5 and moved diagonally to the slider 5'. Both the p1 guide roller 8 and the first reaction force member 90 are on the same X axis.

The second reaction force member 19 can also be moved in the Y-axis direction by changing its mounting position.
It is designed to be movable in the Y-axis direction.

However, the guide roller and the first reaction force member are attached to separate members, and the guide roller alone can control the X-axis.

The first reaction force member is made to be movable in the Y-axis direction, and the first reaction force member is also moved at least Yji! according to the position of the guide roller. I11
You may also use K to move in the direction. Similarly, the second reaction member may also be attached to the attachment member so that it can move at least in the Y-axis direction, corresponding to the end position of the bending roller. Furthermore, by changing the diameter of the large diameter part of both the first reaction member and the second reaction member as stepped rollers, substantially the same effect as that of moving the entire υ valley member can be obtained. If the position of the force member can be adjusted slightly, its shape is not limited to the shape of the mouth.

Since the song processing machine of this invention is as described above, it has the following effects.

1) A Z-shaped curve having two curved sections with opposite bending directions can be processed in one bending operation.

2) Items with multiple Z-shaped bevels, such as lightning bolts, can be bent safely and efficiently by simply moving them sideways, without the need for reversing the work as in the past.

3) Bending of each group 1 of lightning bars with different specification dimensions can be performed using one bending machine.

[Brief explanation of drawings]

FIG. 1 is a plan view showing one embodiment of the present invention, FIG. 2 is a plan view, and FIG. l...Table, 3...Disc, 4...Concave roller, 5...Slider, 8...Kite roller, 9...
...First reaction member, lO...Mounting hole, 14...Stopper, 15...Sizing device, 16a-16d...Mounting hole, 17...Second reaction force member, Q ···origin. Applicant's agent Patent attorney Takeshi Suzue Examination Diagram 1

Claims (1)

[Scope of Claims] (1) Y-axis on the table, about 400 degrees centering on the origin of the Y-axis
A bending roller that reciprocates within a semicircular range with a variable movement range; The first reaction force member that receives the reaction force during the first bending of the workpiece and the upper bending roller 1μI outside the movement trajectory
The guide roller is connected to the Y-axis,
The position can be adjusted in the Y-axis direction and the first. The position of the second reaction force is adjustable at least in the Y-axis direction of the processing machine. (21 If the guide roller and the first reaction member are attached to a slider that moves diagonally to the table surface)
The piece according to claim (1) is a processing machine. (3) A sizing device according to claim (1) or (2), which is provided with a sizing device that adjusts the length from the guide roller by bringing the entire end of the workpiece into contact with the workpiece. Bending knife Loe machine.