JPS62144821A - Bending equipment - Google Patents

Abstract

PURPOSE:To improve a workability of fixing a material to be worked (work) on chucks and to minimize whole apparatus including bending dies by providing carriers loading the end parts of the work in fronts of work inserting holes of both chucks. CONSTITUTION:The work carriers 5 are provided in fronts of the work inserting holes of chucks 4, 4 grasping both the ends of the work, and the heights of loading plates 34 are controlled. Then, ends of the work Ware loaded on the respective loading plates 34 abutting on positioning pins 35 set on the top surfaces of the plates 34. In this case, the work W is positioned on the center lines of both the chucks 4, 4. Then, both ends of the work are grasped by jaws 13. At this time, both the chucks 4, 4 are bent applying an axial tension on the work W and turning to the dies 3 side simultaneously, to bend the work W along the binding dies 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a bending device used for bending a straight workpiece.

(Prior art) Conventionally, as the above-mentioned bending device, for example, the sixth bending device has been used.
There were some as shown in Figure and Figure 7.

That is, this bending apparatus is equipped with chucks 101 and 101 that grip both ends of a workpiece W, which is a shape, facing each other, with a bending die 100 having one curved surface portion 100a in the center. Each chuck 101 is moved forward and backward by a drive means (not shown) and also performs gripping/release operations, and is rotated by a drive arm (not shown) pivotally attached to the bending die 100 or the base of the apparatus main body. Also,
The bending die 100 has a flange-shaped workpiece receiver 100b along its curved surface portion 100a, and this workpiece receiver 1
00b receives the center portion of the workpiece W from the time of starting machining.

The above bending device then processes each chunk 101.1.
After gripping both ends of the workpiece W at 01, while pulling the workpiece W in the axial direction, simultaneously rotate both chucks 101° 101 toward the bending die 100 side as shown by the arrows in FIG. Accordingly, the workpiece W is bent along the curved surface portion 100a of the bending die 100. Further, when the grips by the chucks 101, 101 are released after the above processing, the workpiece W is received by the workpiece receiver 100b.

(Problems to be Solved by the Invention) However, in the conventional bending apparatus as described above, since the workpiece receiver 100b is directly provided on the bending die 100, various preparations are required depending on the curvature. A workpiece holder will be installed in the bending die, and at this time, the size of the bending die must be adjusted in order to be able to receive the workpiece W after processing up to the vicinity of the end so that it does not fall off. In addition, it has the disadvantage that it increases in weight and is difficult to handle.In addition, since it only receives the central part of the workpiece W before processing, it often relies on manual labor, and it takes time and effort to attach it to the chuck 101. there were. Additionally, it is naturally possible to provide a workpiece holder on the bending mold or the base of the equipment body in which this bending mold is installed, to receive the end of the workpiece W before processing. There was a problem in that the mold or the entire device became even larger.

This invention was made by focusing on these conventional problems, and provides a bending device that is easy to attach to a chuck and can downsize the entire device including one bending die. is intended to provide.

[Structure of the Invention] (Means for Solving the Problems) A bending device according to the present invention includes a chuck that grips both ends of a workpiece with the bending die approximately in the center, and rotates the chucks to straighten the workpiece. In the apparatus for bending a shaped workpiece along the bending mold, a workpiece receiver for placing an end of the workpiece is provided on the front surface of the workpiece insertion opening of both chucks. It is a feature.

(Example) The present invention will be explained below based on the drawings.

FIGS. 1 to 85 are diagrams illustrating an embodiment of the present invention.

That is, as shown in FIG. 1, this bending apparatus 1 has chucks 4.4 that grip both ends of a workpiece W, which is a profile, in symmetrical positions with the bending mold 3 installed on a base 2 in the center. A workpiece receiver 5 is provided on the front surface of the workpiece insertion openings of both chucks 4.4 facing each other. In addition,
Each chuck 4.4 is configured to rotate simultaneously by a drive arm (not shown) that is pivotally connected to the base 2. Furthermore, although the bending die 3 is provided with a support portion 3a that supports only the central portion of the workpiece W, the support portion 3a may be provided on the base plate 2.

Further, the chuck 4 and the workpiece holder 5 will be explained in detail based on FIGS. 4 and 5. Housing base 8 formed with
an internal rod 10 having one end fitted with a seal ring 2 slidably inserted into the cylinder section 7; and a plate 11 fitted onto the internal rod 10 to close the cylinder section 7. , :+Irh *Q
r+ ,,, <1 n rrs j reason h number! L bQ + de IW A, =← disk 12, four jaws 13 (the number is not particularly limited) that engages with the disk 12, and each of the jaws 13.
A fixing ring 15 screwed onto the outer periphery of the housing base 8 is used to attach the plate 11 and the housing 1 to the housing base 8.
4 is fixed. The housing base 8 has a rear end (right end in FIG. 5) and a front end (
Oil boats 16 and 17 are formed at the left end in FIG. 5, respectively, and communicate with the outside. The housing 14
The inner surface thereof forms a hexagonal pyramid shape with the opening area decreasing toward the front (leftward in FIG. 5), and the jaws 13 are disposed on every other surface. The jaw 13 is formed by connecting a plurality of laminated pieces 18 to each other with a removable connector 12, and the number of pieces 18 can be increased or decreased depending on the cross-sectional dimension of the workpiece W. be. Furthermore, the jaw 13 has a hexagonal opening extending in the front-rear direction of the chunk 4 in the housing 1. 712
The length of the guide elongated hole 20 is moved through the disk 13 by the forward and backward movement of the internal rod 10 mentioned earlier. along the inner surface of the housing 14. Note that spacers 24 (shown by imaginary lines in FIG. 4) may be provided on opposing surfaces of each jaw 13 depending on the cross-sectional dimensions of the workpiece W. and.

A workpiece receiver 5 is attached to the front side of the chuck 4 having the above-mentioned configuration.

The workpiece receiver 5 is connected to the housing 1 at the port 25.
The chuck 4 includes a bracket 26 fixed to the front surface of the chuck 4 and having a horizontal portion 26a protruding in the front direction of the chuck 4, and an elevating plate 28 that is raised and lowered by rotation of a threaded rod 27 connected to the lower surface. The threaded rod 27 is engaged with a female threaded hole (path shown) that opens upward and downward at approximately the center of the horizontal portion 26a, and is provided with a handle 22 for rotational operation at its lower end. The elevating plate 28 has a plurality of guide rods 30 slidably passing through the horizontal portion 26 on its lower surface, and in this embodiment, an adjustment plate 32 is fixed on the upper surface using a stop linter 31. Furthermore, a plate 34 for one head is fixed to the upper surface of the adjustment plate 32 using the same stop linter 33. Here, a positioning pin 35 is erected on the upper surface of the 1lffla plate 34, as shown in FIGS. 2 and 3. This positioning pin 35 is attached to the mounting plate 34.
A large number of positioning holes 36 formed at predetermined intervals on the upper surface of the
It is detachable from the chuck 4 and is erected in an appropriate positioning hole 36 so that the workpiece W can be positioned on the center line of the chuck 4.

The bending device 1 equipped with the chuck 4 and the workpiece receiver 5 described above operates the handle 22 to bend the mounting plate 3.
4, and place the workpiece W on each mounting plate 34 with the end side surface of the workpiece W in contact with the positioning pin 35. This placement of the workpiece W can be performed automatically. At this time, the workpiece W is positioned on the center line of the opposing chucks 4, 4. Next, both ends of the workpiece W are swallowed into each housing 14 by moving the chucks 4, 4 forward toward each other by the operation of each drive rod 6, and then the rear side (
Oil is injected into the cylinder part Z from the oil port 16 (on the right side in FIG. 5) to move the internal rod 10 forward. Then, as the internal rod 10 moves forward, each jaw 13 moves forward via the disk 12. At this time, since the inner surface of the housing 14 has a hexagonal pyramid shape that narrows toward the front, the upper half of FIG. As shown, each jaw 13 grips the end of the workpiece W by approaching each other as it moves forward. Then, by simultaneously rotating both chucks 4.4 toward the bending die 3 side while applying an axial tensile force to the workpiece W, the workpiece W is rotated as shown by the imaginary line in FIG.
is bent along the bending die 3.

After the above-mentioned processing, the fifth
As shown in the lower half of the figure, the internal iron 10 is retracted and at the same time each jaw 13 is retracted to release the grip on the end of the workpiece W. Furthermore, both chucks 4 are retracted to release the grip on the end of the workpiece W. The end of the housing 14 is exposed to the outside of the housing 14.

At this time, the workpiece W is supported by the support portion 3a provided on the bending die 3 and the mounting plate 34 of each workpiece receiver 5.

In other words, as is clear from the above description, in the bending apparatus 1, there is no need for the bending die 3 or a large workpiece receiver provided in the apparatus main body, and the workpieces before and after machining can be can be stably supported, and it is easy to fully automate the bending process. Note that the detailed configurations of the chuck 4 and workpiece holder 5 are not limited to the above embodiments.

[Effects of the Invention] As explained above, the bending apparatus of the present invention is provided with a chuck that grips both ends of the workpiece with the bending die approximately in the center, and the rotation of both chucks allows the bending device to bend the workpiece in a straight line. In an apparatus for bending a workpiece along the bending mold, a workpiece receiver for placing an end of the workpiece is provided in front of the workpiece insertion opening of both nN chunks, so that the workpiece can be bent easily. The workability of attaching objects to the chuck can be significantly improved, and since there is no need to provide at least a conventional large workpiece holder on the bending die or the device body, the entire device including the bending die can be downsized. It has the excellent effect of being able to realize the following, and has advantages such as ease of handling and saving of space occupied.

[Brief explanation of drawings]

FIG. 1 is a plan view illustrating the outline of a bending apparatus according to an embodiment of the present invention, FIGS. 2 and 3 are a front view and a plan view of a chuck illustrating how to position a workpiece, and FIG. The figure is a front view illustrating the chuck and workpiece holder, Figure 5 is a sectional view illustrating the chuck and workpiece holder by distinguishing the upper and lower forward and backward states of the jaws, and Figures 6 and 7 are conventional bending FIG. 2 is a plan view and a side view illustrating a processing device. 1...Bending processing device. 3...Bending type. 4... Chuck, 5... Workpiece receiver, W... Workpiece.

Claims (1)

[Claims] (1) An apparatus comprising a chuck that grips both ends of a workpiece with a bending die approximately in the center, and bending a linear workpiece along the bending die by rotation of both chucks. A bending device characterized in that a workpiece holder for placing an end portion of the workpiece is provided on the front surface of a workpiece insertion opening of the chuck.