JPH06238349A - Bending device - Google Patents

Abstract

PURPOSE:To save time required for manufacture a press metal and to advantageously bend a work by constituting the press metal integrated with a press metal main body and a holder by joining. CONSTITUTION:The press metal 5 of a bending device consists of the press metal main body 7 and the holder 8 provided on a side of the main body 7 and connected to a moving body 6a of a press metal driving device 6 through a slit 4b of a guide 4. The work W is bent by turning and displacing the movable metallic die 2 while the work W arranged in the work guide 4 is pushed by the press metal 5 by driving the extruding driving device 6 and passed through the through-holes 1a and 2a of the metallic dies 1 and 2. Time and cost required for manufacture the press metal 5 are reduced since the press metal main body 7 and the holder 8 are respectively manufactured in adequate ways for them.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called multi-bender bending apparatus used for bending a metal workpiece such as an aluminum extrusion mold material.

[0002]

2. Description of the Related Art Recently, a bending apparatus called a multi-bender tends to be often used for bending a work such as an aluminum extruded material.

As shown in FIG. 4 (a), this bending apparatus is arranged in front of the fixed mold (51) and the fixed mold (51) having a work conduction hole (51a). ,
A movable mold (52) having a work communication hole (52a) and supported so as to be able to turn and displace, and a fixed mold (51) are arranged behind the fixed mold (51). ) Work feeder (53) for forced conduction to the work conducting hole (51a)
It has and.

The work feeder (53) has a work guide (54) for slidably guiding the work (W) by supporting the outer periphery of the work (W) and a rear end of the work (W) in the guide (54). The pressing metal (55) for pushing and the pressing metal drive device (56) for driving the pressing metal (55) in the front-back direction are provided.

Then, the forced movement of the work (W) to the two die communicating holes (51a) (52a) by the forward movement of the pusher (55) and the turning / displacement operation of the movable die (52) cooperate with each other. The bending of the work (W) is performed by the action.

By the way, in the above bending apparatus,
The work guide (54) has an internal conduction space (54a) as shown in FIG. 4 (b) so that the work (W) is not buckled during the supply of the work (W). , A space having a cross-sectional shape that conforms to the outer peripheral shape of the work (W).

Therefore, the pusher (55) is shown in FIGS. 4 (b) and 5 (a) so that the work (W) can be pushed in such a space (54a). As shown in the drawing, while the press guide main body (57) having a cross-sectional shape conforming to the cross-sectional shape in the work guide (54) is provided, the press metal body (57) is laterally projected to The structure is provided with a holder (58) connected to the drive device (56).

The push-pull body (57) must strongly connect the work (W) to the work-conducting hole (52a) of the movable mold (52) which performs the turning / displacement operation. Since it must have sufficient strength, it is designed to have a very long length in the front-back direction, for example, in the range of 180 to 300 mm.

Also, the holder (58) is designed to have a considerable length in the front-rear direction in terms of strength, and its thickness is generally designed to be thick regardless of the wall thickness of the pressing body (57). Has been done.

Therefore, conventionally, the production of the press metal (55) is the fifth.
As shown in the figure (b), a solid steel square bar (60) having a predetermined length is used, and the square bar (60) is cut along the cutting line as shown by the chain line on its end face. It was performed by cutting in the vertical direction and cutting the press-fitting body (57) and the holder (58) as an integrally molded product. And
This cutting was performed by the wire cutting method because the cutting depth was very deep.

As described above, by adopting the manufacturing method in which the square bar (60) is wire-cut, the pressing body (57) having a cross-sectional shape conforming to the cross-sectional shape of the work and having a sufficient length for ensuring strength. ) Can be molded, and a press metal (55) having a holder (58) having a thickness different from that of the main body (57) can be processed and manufactured.

[0012]

However, in the above-described presser structure in which the presser body (57) and the holder (58) are originally processed and manufactured as an integrated body, the presser plate (55) is
Since the entire cross-sectional shape includes the cross-sectional shape of the holder (58), the cutting depth is extremely deep, including the processing of the holder (58). Therefore, there is a problem that it takes a lot of time to process and manufacture the pressing metal (55), and a large amount of cost is required to manufacture the pressing metal (55). This has been a cause of increasing the cost required for bending the work.

In particular, in the bending apparatus as described above, there are many cases in which many kinds of works having different cross-sectional shapes are bent one after another, and therefore, for each kind of work to be bent, It is necessary to prepare a large number of pressing metal for exclusive use, and the reduction of the time and cost required for manufacturing the pressing metal means to reduce the bending cost.
It was an important issue to be solved.

Although the wire cutting method is effective for cutting with a very deep cutting depth, it has the drawback that it takes a lot of time for processing and the cost is very high. Molding the main body of the presser plate also requires much time and cost.

Moreover, the wire cutting method is effective as a cutting method for forming a thick portion, but on the other hand,
It is unsuitable as a cutting method for forming a thin portion, and therefore, in the conventional method that relied on the wire cutting method for processing the pressing body, the shape of the pressing body that can be formed,
That is, a limit is caused in the range of the cross-sectional shape, and in the range of the press metal that can be manufactured. This has also been one of the causes of limiting the shape range of the work that can be bent by the multi-bender as described above.

In view of the above-mentioned conventional drawbacks, the present invention can shorten the time required for working / manufacturing the presser, and can reduce the cost required for working / manufacturing the presser, and thus, A first object of the present invention is to provide a bending apparatus capable of bending a work with a cost advantage.

A second object of the present invention is that the pressing body can be molded advantageously in terms of time and cost,
Moreover, it is possible to realize the formation of a thin-walled type pressing body,
A bending device capable of contributing to the expansion of the range of presser body shapes that can be manufactured, the expansion of the range of pressers that can be manufactured, and the expansion of the range of work that can be bent by realizing bending of thin-walled works. To provide.

[0018]

For the above-mentioned purpose, the first
Of the present invention, a fixed mold having a work conduction hole, a movable mold arranged in front of the fixed mold, having a work conduction hole, and supported so as to be capable of turning and displacing, a fixed mold. And a work feeder for forcibly conducting the work to the work conduction hole of the fixed mold, and the work feeder is a work guide for movably guiding the work by supporting the outer periphery thereof. Equipped with a pusher that pushes the rear end of the work in the guide, and a pusher drive device that drives the pusher in the front-back direction.Forcible conduction of the work to both die conduction holes by the forward movement of the presser and turning of the movable die In a bending apparatus, which is configured to bend a work by a cooperation action with a displacement operation, the presser is movably arranged in a work guide and presses a rear end face of the work, and a presser body.
A bending apparatus is characterized in that it comprises a holder protruding laterally from the pressing metal body and connected to a pressing metal drive device, and the pressing metal body and the holder are integrated by being joined to each other.

A second aspect of the present invention is the bending apparatus according to the first aspect of the present invention, wherein the press-fitting body is a plate bending body.

[0020]

In the bending apparatus according to the first aspect of the present invention, since the presser has a structure in which the presser main body and the holder are integrated with each other by joining, the presser is manufactured by processing and manufacturing the presser main body. Processing and manufacturing of the holder are individually performed, and the obtained pressing metal body and the holder are joined together. Therefore, the pressing body and the holder can be processed and manufactured by a processing method suitable for each, that is, for example, at least the holder can be processed without using the wire cutting method, and as a result, the pressing metal can be processed. The time required for processing / manufacturing can be shortened and the cost can be reduced.

Since the holder is a member different from the presser body at the stage of manufacturing and processing the presser,
Even in the production and processing of holders, this has a unique wall thickness.
It can be manufactured to have a length.

Further, in the bending apparatus according to the second aspect of the present invention, since the pressing body is made of a plate bending body, the pressing body can be processed and manufactured advantageously in terms of time and cost. At the same time, processing of the thin-walled type pressing body
It can be easily manufactured without difficulty.

[0023]

EXAMPLE Next, an example in which the bending apparatus of the present invention is applied to bending a work (W) made of an aluminum Z-shaped thin-walled extruded material as shown in FIG. 3 will be described. .

In the bending apparatus shown in FIG. 2A, (1) is a fixed mold, (2) is a movable mold, and (3) is a work feeder.

The fixed mold (1) has a work conduction hole (1a) inside. The work communication hole (1a) is formed to have a lateral cross-sectional outer peripheral shape conforming to the outer peripheral shape of the work (W), and is communicated with the conduction hole (1b) for a bending fulcrum at the front end portion and the rear portion thereof. And a conducting hole (1c) for the work guide.

The movable mold (2) is arranged in front of the fixed mold (1) in proximity to the fixed mold (1), has a work communication hole (2a), and is supported so as to be capable of turning and displacing. It has been done. The work communication hole (2a) has an inner peripheral shape conforming to the outer peripheral shape of the work (W) at the center position in the front-rear direction, and is formed in a drum-like curved surface that opens in a curved surface from the center position in both front and rear directions. , Movable mold (2)
The workpiece (W) is allowed to pass through the conduction hole (2a) while being smoothly bent in a predetermined manner when the workpiece is turned or displaced.

The feeder (3) is arranged behind the fixed mold (2) and forcibly conducts the work (W) to the work-conducting hole (2a) of the fixed mold (2). The work feeder (3) includes a work guide (4) that slidably guides the work (W) by supporting the outer periphery of the work (W), and a pressing metal (4) that pushes the rear end of the work (W) within the guide (4). 5)
And a pusher driving device (6) for driving the pusher (5) in the front-back direction.

The work guide (4) has therein a guide space (4a) for slidably guiding the work (W), and the inner peripheral shape of its cross section is shown in FIG. As described above, the work (W) is formed in a shape conforming to the outer peripheral shape. Then, a slit (4b) extending in the length direction is formed at the side edge portion, and through this slit (4b),
The press metal (5) in the guide space (4a) and the press metal drive device (6) are connected.

The pusher drive device (6) is provided with a moving body (6a) arranged along the work guide (4) and connected to the pusher (5). The movable body (6a) is moved in the front-rear direction so that the pusher (5) connected to the movable body (6a) is moved.
Are driven to move in the front-back direction within the guide space (4a).

As shown in FIG. 2 (b) and FIG. 1, the pressing metal (5) has a cross-sectional shape / size corresponding to the cross-sectional shape / size of the work (W), and has a guide space ( 4a) a pusher body (7) that is slidably arranged in the front-back direction, and a movable body (6) of the pusher drive device (6) that is provided on a side portion of the pusher body (7) so as to project laterally. 6a) and a holder (8) connected to the guide (4) through a slit (4b).

Then, the work (W) arranged in the work guide (4) is pushed forward by the pusher (5) by the drive of the pusher drive device (6) to move the two dies (1) (2). The movable mold (2) is turned and displaced in a predetermined manner while being electrically connected to the work communication holes (1a) and (2a) of the work, so that the work (W) uses the movable mold (2) as an action point. The bending process is performed by applying bending with the fixed mold (1) as a fulcrum.

In the bending apparatus, as shown in FIGS. 1 and 2 (b), the pressing metal body (7) has a wall thickness of the work (W) as shown in FIGS. Using a thin flat plate piece made of steel with approximately the same thickness,
This is a plate-bending molded body formed by subjecting the plate to a plate bending process using a press or the like.

In consideration of the strength required for the holder (8), a steel plate generally thicker than the pressing body (7) is prepared and cut into a predetermined shape. And, it is manufactured by forming a hole (9) for holding in this. Cutting can be performed by a conventional method, for example, using a cutting saw.

The pressing metal (5) is manufactured by joining and integrally bonding the pressing metal body (7) and the holder (8) to each other by welding (10). The presser body (7)
The holder and the holder (8) are generally joined by welding, but other joining methods may be used.

In this way, the pressing metal (5) is divided into the pressing metal body (7) and the holder (8), and the pressing metal body (7) is divided.
Is formed by bending a plate, and is manufactured by welding the holder (8) to the pressing body (7). Therefore, the pressing metal (5) is cost-effective and can be manufactured in a short time. It can be manufactured, and thus the bending cost can be reduced. In addition, since it is a plate bending body, it is possible to manufacture a thin press body (7), and a thin work (W) as shown in FIG.
Bending is also possible, and the range of works that can be bent by the multi-bender can be expanded.

By the way, in the case of the wire cut method,
By comparing the manufacturing time and the manufacturing cost of the pressing metal with the plate bending method, it was confirmed that the manufacturing time and the manufacturing cost can be shortened and reduced to 1/10 of the conventional case by adopting the plate bending method. .

In the above embodiment, the pressing metal body (7) is formed of a plate-bent molded body.
When the work is a thin hollow material such as a thin circular pipe material, for example, the pressing metal body is made of a steel seamless tube cut to a predetermined length, and a holder is joined to the pressing metal body by welding or the like. A pusher having a different structure may be adopted.

[0038]

As described above, in the bending apparatus according to the first aspect of the present invention, since the pressing metal has a structure in which the pressing metal body and the holder are integrated with each other by joining, the pressing metal is manufactured. Can process / manufacture the pressing metal body and the holder by a processing method suitable for each, and as a result, it is possible to shorten the time required for processing / manufacturing the pressing metal and reduce the cost. As a result, the work can be bent in a cost-effective manner.

Further, in the bending apparatus according to the second aspect of the present invention, since the press-fitting body is made of a plate-bending molded body,
The presser body can be processed and manufactured much more advantageously in time and cost than in the case of the conventional wire cutting method, and the bending work can be performed more cost-effectively. You can

Moreover, the fact that the press body is processed and manufactured by plate bending as described above not only shortens the manufacturing time and the manufacturing cost, but also makes it difficult to process by the conventional wire cutting method. It is possible to realize the processing and manufacturing of a thin-walled type pressing body, expand the range of the shape of the pressing body that can be molded, and thus expand the range of pressing metal that can be manufactured. It can contribute to the expansion of the range of workable materials.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a pusher according to an embodiment of the present invention.

FIG. 2A is a cross-sectional view showing the overall configuration of the bending apparatus, and FIG. 2B is a view taken along the line II-II of FIG.

FIG. 3 is a perspective view of a work.

FIG. 4A is a sectional view of a conventional bending apparatus, and FIG. 4B is a sectional view taken along line IV-IV of FIG.

FIG. 5A is a perspective view of a conventional pressing metal, and FIG. 5B is an end view of a material for manufacturing the pressing metal.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Fixed mold 1a ... Work conduction hole 2 ... Movable mold 2a ... Work conduction hole 3 ... Feeder 4 ... Work guide 5 ... Push metal 6 ... Push metal drive device 7 ... Push metal body 8 ... Holder 10 ... Welding part

Claims (2)

[Claims] 1. A fixed mold having a work communicating hole, a movable mold arranged in front of the fixed mold, having a work communicating hole, and supported so as to be capable of turning and displacing, a fixed mold. And a work feeder arranged at the rear of the die for forcibly conducting the work to the work conduction hole of the fixed die, the work feeder supporting the outer peripheral portion of the work and movably guiding the work. , A pusher for pushing the rear end of the work in the guide, and a pusher drive device for driving the pusher in the front-back direction are provided. Forcible conduction of the work to both die conduction holes by forward movement of the pusher and movement of the movable die In a bending apparatus configured to bend a work by cooperation with a turning / displacement operation, the press metal is movably arranged in a work guide to press a rear end surface of the work, and the press metal is provided. Body And a holder that is connected to the pusher drive device,
A bending apparatus characterized in that the pressing body and the holder are integrated by being joined to each other. 2. The bending apparatus according to claim 1, wherein the pressing body is made of a plate bending body.