JPH10192993A - Pushing through type bending device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the generation of galling by reducing the face pressure on a gyroscope die in the time of bending, at the same time, to elongate the twist limit by preventing returning of twisting a work, and further, to prevent the generation of galling by reducing the face pressure on the gyroscope die in the time of twisting. SOLUTION: A gyroscope die 3 is divided in plural numbers of divided gyroscope dies 3a, 3b in the work conducting direction, a driving device 6 of making any one divided gyroscope die 3a among these divided gyroscope dies 3a, 3b to turn, displace and rotate is provided, and the rest divided gyroscope die 3b is held making the work conducting direction as its axial line on a driven divided gyroscope die 3a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal work such as an aluminum extruded material, for example, by subjecting such a work to bending, twisting, or twisting and bending. The present invention relates to a push-through bending apparatus used for performing combined torsional bending.

[0002]

2. Description of the Related Art In recent years, a push-through type bending apparatus which is also called a multi-bender is sometimes used for bending a work such as an aluminum extruded material.

As shown in FIG. 6 (a), this bending apparatus has a fixed mold (51) having a work conduction hole (52).
An integrated gyro mold (53), which also has a work conduction hole (54), is disposed in front of the fixed mold (51), and is supported so as to be capable of turning, displacement, and rotation; The work (W) is installed behind the mold (51) and the fixed mold (5
A work feeder (55) is provided with a pusher or the like for forcibly conducting the work to the work conduction hole (52) of 1). And both dies (51) by the work feeder (55)
The fixed mold (51) is formed by the cooperative action of the forced conduction of the work (W) to the work conduction holes (52) and (54) of (53) and the turning, displacement and rotation of the gyro mold (53). The work (W) is bent as shown in FIG. 6 (b), or as shown in FIGS. 7 (a) and (b), using the fulcrum as a fulcrum and the gyro mold (53) as an action point. It is designed to be twisted or even twisted.

The conventional gyro mold (53) is designed to prevent a problem such as galling caused by a large surface pressure from the work (W) when bending, as shown in FIG. As shown in (c), the bearing length in the work conduction hole (54) is designed to be somewhat long.

[0005]

However, as described above, when the bearing length of the gyro mold (53) is increased, the work (W) is rotated by rotating the gyro mold (53) about the work conduction direction as an axis. 7 is twisted or twisted as shown in FIG. 7, the twist given between the gyro mold (53) and the fixed mold (51) is changed to the gyro mold ( The work (W) is returned by passing through the work conduction hole (54) of (53), and there is a problem that the work (W) cannot be twisted to a twist angle larger than a certain value. Further, such a return of the torsion results in applying a large surface pressure to the gyro metal mold (53), which may cause galling.

In view of the background of the prior art as described above, the present invention not only reduces the surface pressure on the gyro mold during bending to prevent the occurrence of galling, but also prevents the occurrence of galling. A push-through bending machine that can prevent the return of torsion and extend the torsion limit, and also reduces the surface pressure on the gyro mold during torsion and torsion bending to prevent galling. The task is to provide.

[0007]

An object of the present invention is to provide a fixed mold having a work conducting hole, and a fixed mold having a work conducting hole, which is disposed in front of the fixed mold and supported for turning, displacement, and rotation. A gyro mold, and a work feeder disposed behind the fixed mold and forcibly conducting the work to the work conduction hole of the fixed mold. In a push-through bending apparatus configured to perform bending and / or torsion of a work by a cooperative action of a work forced conduction and a turning / displacement / rotation operation of a gyro mold, the gyro mold has a work conduction. The drive device is divided into a plurality of divided gyro dies in the direction, and one of the divided gyro dies is turned, displaced, and rotated. It is is solved by remaining divided gyro mold the element blocks gyro die rotatably be held bent push-through type, characterized in the processing apparatus as the axis of the workpiece conduction direction.

That is, in the above-mentioned push-through bending apparatus,
At the time of bending the work, a plurality of divided gyro dies cooperate on the gyro mold to support the work. Therefore, the surface pressure acting on the gyro mold is reduced, and the occurrence of galling is prevented.

When the drive-split gyro mold rotates and imparts a torsion to the work, the remaining split gyro mold is rotatably held by the drive-split gyro mold, thereby providing a twisted shape of the work. Is rotated to follow. Therefore, the torsion of the work is not returned by the passage of the gyro mold, and the torsion with a large torsion angle is achieved, and the limit of the torsion is extended. In addition, since there is no such return of the twist, the surface pressure on the gyro mold at the time of the twist is reduced, and the occurrence of the galling is prevented.

[0010] Another object of the present invention is to provide a push-through type bending apparatus, wherein a drive device for individually rotating each of the divided gyro dies is provided. The same problem can be solved by a push-through bending apparatus in which the rotation is individually controlled with the work conduction direction as an axis so as to correspond to the torsion shape of the work.

[0011]

Next, embodiments of the present invention will be described with reference to the drawings.

FIGS. 1 to 3 show a push-through bending apparatus according to a first embodiment. As shown in FIG. 1A, this bending apparatus has a fixed mold (1) having a work conducting hole (2) and a fixed mold (1) also having a work conducting hole (4). A gyro mold (3) arranged in front of the gyro and supported for turning, displacement and rotation, and a work (W) is arranged behind the fixed mold (1) to conduct the work (W) to the fixed mold (1). A work feeder (5) is provided by a press or the like forcing the hole (2) into conduction, and the work feeder (5) transfers the work to the work conduction holes (2) (4) of both dies (1) and (3). Bending, torsion, and bending torsion are imparted to the work (W) by the cooperative action of the forced conduction and the turning, displacement, and rotation operations of the gyro mold (3).

In the bending apparatus, the gyro mold (3) is divided into first and second divided gyro dies (3a) and (3b) in the work conduction direction. Each of the work conduction holes (4a) (4B) of each of the divided gyro dies (3a) (3b) is formed so as to have a large vertical section toward the opening at both ends thereof, and has a conical shape in longitudinal section. As shown in FIG. 1 (a), the first split gyro mold (3a) is connected to a driving device (6) and performs a turning / displacement / rotation operation by a control device (7). Have been. On the other hand, as shown in FIGS. 1 (b), (c-1) and (c-2), the second split gyro mold (3b) is the first split gyro mold (3a), that is, the drive split gyro. The die is rotatably held about a work conduction direction as an axis. Note that the turning and displacement operations except for the rotation of the second split gyro mold (3b) are held so as to operate integrally with the first split gyro mold (3a). Such a holding structure can be realized by various conventional means such as, for example, slidably fitting a pin into an arc-shaped groove.

In the above-described push-through type bending apparatus, when bending a work, as shown in FIG.
The two split gyro dies (3a) and (3b) perform turning and displacement operations integrally, and cooperate to apply a bending force to the work (W). Accordingly, the surface pressure received from the work (W) is reduced, and occurrence of galling is prevented.

On the other hand, as shown in FIGS. 3 (a), 3 (b) and 3 (c), the first split gyro mold (3a) is
When the work (W) is twisted by rotating due to
Since the other second divided gyro mold (3b) is rotatably held by the first divided gyro mold (3a), it is rotated so as to follow the torsional shape of the work (W).
Therefore, the torsion of the work (W) is not returned by the passage of the gyro mold (3), and the torsion with a large torsion angle can be achieved. Further, since there is no return of the torsion, the divided gyro during the torsion is used. The surface pressure on the molds (3a) and (3b) is also reduced, thereby preventing galling. The same applies to torsional bending.

FIGS. 4 and 5 show a second embodiment. In this push-through bending apparatus, as shown in FIG. 4, the gyro mold (3) is similarly divided into a first and a second divided gyro mold (3a) in the work conduction direction.
(3b). In the present embodiment, each of the divided gyro dies (3a) (3b) is connected to a separate drive device (6a) (6b), and the control device (7) controls the rotation individually with the work conduction direction as an axis. It has been made to be. The control by the control device (7) is based on the torsion shape of the work (W), and the rotation angle to be taken by each of the divided gyro dies (3a) and (3b) with respect to the torsion shape is used as a command signal as a drive signal ( 6a) and (6b), so that the divided gyro dies (3a) and (3b) are controlled to rotate at a predetermined rotation angle according to the torsion shape of the work (W).

In the turning / displacement operation of the gyro die (3) for bending, one of the split gyro dies (3a) is turned / displaced by a driving device, and the other split dies are driven. (3b) may be configured such that the turning and displacement operations are integrally performed by being operated by the operation of the one split mold (3a), or the two split gyro molds (3a) ( 3b) are individually driven by a driving device,
Thereby, a configuration may be adopted in which the turning and displacement operations are controlled integrally.

In this bending apparatus, when the work (W) is bent, the divided gyro dies (3a) and (3b) cooperate with each other, as shown in FIG. , The surface pressure received from the work (W) in the gyro mold (3) is reduced, and the occurrence of galling is prevented. Further, as shown in FIG. 5B, when the work (W) is twisted, each of the divided gyro dies (3a) and (3b) is controlled by the control device (7).
Since the rotation is individually controlled so as to correspond to the torsion shape of the work (W), the torsion of the work (W) is not returned by the passage of the gyro mold (3), and the torsion with a large torsion angle can be performed. Since the twist is not returned, the surface pressure on the split gyro dies (3a) and (3b) at the time of twisting is reduced, and the occurrence of galling is prevented. The same applies to torsional bending.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various changes can be made without departing from the spirit of the invention. For example, in the first embodiment, of the two divided gyro molds (3a) and (3b), the divided gyro mold (3a) on the work input side is configured to be rotationally driven, and the divided gyro mold (3a) on the work output side is divided. The gyro mold (3b) is free to rotate, but the reverse is also possible. In each of the above embodiments, the gyro metal mold (3) is divided into two parts. However, the number of divisions may be three or four.
In the case of the configuration in which the gyro mold is divided into three or more, in the type of the first embodiment, the configuration is such that the central divided gyro mold is driven and the divided gyro molds before and after the central gyro mold are free to rotate. It may be taken, and the center and either one of the front and rear divided gyro molds are free to rotate,
A configuration in which the other split gyro mold is driven may be adopted.

[0020]

As described above, according to the push-through bending apparatus of the present invention, the gyro mold is divided into a plurality of divided gyro dies in the work conduction direction, and any one of the divided gyro dies is used. A drive device for turning, displacing, and rotating the two split gyro dies is provided, and the remaining split gyro dies are rotatably held by the drive split gyro dies with the work conduction direction as an axis. Further, the push-through bending apparatus of the present invention is provided with a driving device for individually rotating each of the divided gyro dies, and these divided gyro dies have a torsion shape of the work when the work is twisted. Correspondingly, the rotation is individually controlled with the work conduction direction as the axis.

Therefore, when the work is bent, a plurality of divided gyro dies cooperate on the gyro dies to support the work and reduce the surface pressure acting on the gyro dies. Generation can be prevented.

When the gyro dies rotate to impart a twist to the work, the divided gyro dies are rotated so as to follow the torsion shape of the work, so that the torsion of the work passes through the gyro dies. The workpiece can be twisted to a large torsion angle without being returned, and the limit of torsion can be extended. In addition, since there is no return of the twist, the surface pressure on the gyro mold at the time of the twist can be reduced, and the occurrence of the galling can be prevented. The same applies to the case of torsional bending.

[Brief description of the drawings]

1A and 1B show a first embodiment of the apparatus, in which FIG. 1A is a side sectional view, FIG. 1B is a perspective view of a gyro mold, and FIG.
1) (c-2) is a front view showing the operation of the second split mold of the gyro mold.

FIG. 2 is a side sectional view of the bending apparatus during bending.

FIG. 3 shows the bending apparatus during torsion processing;
FIG. 1A is a side cross-sectional view, FIG. 2B is a view taken along line II of FIG. 1A, and FIG. 2C is a cross-sectional side view showing a mold in a gyro mold.

FIG. 4 is a side sectional view showing a device according to a second embodiment.

FIG. 5A is a side cross-sectional view of the bending apparatus during bending, and FIG. 5B is a side cross-sectional view of the bending apparatus during twisting.

6A and 6B show a conventional bending apparatus, and FIG. 6A is a cross-sectional side view, and FIG. 6B is a cross-sectional side view of the bending apparatus during bending.

FIG. 7 shows the bending apparatus during torsion processing.
FIG. 1 (a) is a side sectional view, FIG. 2 (b) is a front view, and FIG. 3 (c) is a sectional side view showing a mold in a gyro mold.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Fixed mold 2 ... Work conduction hole 3 ... Gyro mold 3a ... 1st divided gyro mold 3b ... 2nd divided gyro mold 4 ... Work conduction hole 5 ... Work feeder 6 ... Driving device 6a, 6b ... Driving device 7 ... Control device W ... Work

Claims (2)

[Claims] 1. A fixed mold having a work conducting hole, a gyro mold also having a work conducting hole, disposed in front of the fixed mold, and supported to be capable of turning, displacement, and rotation; A work feeder disposed behind the mold and forcibly conducting the work to the work conduction hole of the fixed mold; anda forcible conduction of the work to the work conduction hole of both molds by the work feeder; and a gyro mold. In a push-through bending apparatus configured to bend and / or twist a work by cooperating with turning, displacement, and rotation operations of the gyro mold, the gyro mold has a plurality of divided gyro dies in a work conduction direction. And a driving device for turning, displacing, and rotating one of the divided gyro dies is provided. A push-through bending apparatus, wherein a mold is rotatably held by the drive-divided gyro mold about a work conduction direction as an axis. 2. A fixed mold having a work conducting hole, a gyro mold also having a work conducting hole, disposed in front of the fixed mold and supported for turning, displacement, and rotation; A work feeder disposed behind the mold and forcibly conducting the work to the work conduction hole of the fixed mold; anda forcible conduction of the work to the work conduction hole of both molds by the work feeder; and a gyro mold. In a push-through bending apparatus configured to bend and / or twist a work by cooperating with turning, displacement, and rotation operations of the gyro mold, the gyro mold has a plurality of divided gyro dies in a work conduction direction. The gyro dies are provided with a driving device that individually rotates the gyro dies. When the gyro dies are twisted, A press-through bending apparatus characterized in that the rotation is individually controlled with the work conduction direction as an axis so as to correspond to the above.