JP2650010B2 - Die changing device for extrusion press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a die exchanging apparatus for an extrusion press, and more particularly to an extrusion press capable of efficiently performing a die exchanging operation for a press having a structure in which the extrusion press combines both direct extrusion and indirect extrusion. The present invention relates to a die exchange device for use.

[0002]

2. Description of the Related Art As a conventional die exchanging device for a direct extrusion press, a die changer is arranged at a side of a press, and exchange is performed by moving a die cassette placed on a tray of the die changer toward the center of the extrusion press. It is known that this is done. This is configured such that a die slide for traversing the die cassette is provided on one side of the press and a die changer is arranged on the other side. The die slide has a hook engagement structure that can be attached and detached only in the direction parallel to the die cassette and the press center, and the die slide is driven by the cylinder to move the common guide at the front of the platen, and the old die cassette to the die changer At the same time, the exchanging operation is performed by hooking a new die cassette on the die changer and pulling it to the press center. The die changer has a slide tray which can be moved back and forth, and is provided with a mounting portion for the new die cassette and a receiving portion for the old die cassette. The position is to be changed.

[0003]

However, the above-mentioned conventional die changer is applied to die exchange for a direct extrusion press, and is intended for die exchange of the same size. When exchanging a press die or exchanging a press die having a structure that combines both direct extrusion and indirect extrusion, the exchanging operation becomes very complicated, and a quick exchanging operation cannot be performed. In particular, since the die for indirect extrusion has a die stem, it cannot be replaced by a conventional die changer.

The present invention focuses on the above-mentioned conventional problems, and in particular, provides an extruding press die exchanging apparatus having a structure capable of quickly exchanging a die for a press which combines both direct extrusion and indirect extrusion. With the goal.

[0005]

In order to achieve the above object, a die changing apparatus for an extrusion press according to the present invention is arranged at a side portion of an extrusion press and is capable of transferring an exchange die cassette to the press. A die changer for an extrusion press, comprising a slide tray, wherein the slide tray is capable of mounting a plurality of die cassettes and is provided with a die changer main body which is attached to a fixed frame so as to be movable back and forth; A die standby base capable of simultaneously mounting the direct extrusion die cassette and the indirect extrusion cassette in tandem with the die standby base is provided, and the die cassette is transferred between the die standby base and the slide base of the die changer body. A configuration is provided in which a die cassette traversing drive means is provided.

[0006]

In order to replace the direct die cassette with the indirect die cassette according to the above configuration, the indirect die cassette to be replaced is mounted on the die standby base in advance, and the standby is performed. The die cassette for direct extrusion is sent to the side and transferred onto the slide tray. Then, the die slide is pulled in, the slide tray is moved to a position where the die cassette can be sent out by the die cassette traversing means, and the die cassette is directly mounted on the standby base. Retract the slide tray where the empty space is formed, and then reverse
The die cassette for indirect extrusion is transferred from the standby base.
The transfer position of the indirect die cassette may be set to an empty space on the front end side of the slide tray so that the die stem does not interfere with the transfer space of the direct extrusion die cassettes arranged in tandem on the slide tray. . After the die slide is advanced from the press side, the slide tray is moved, thereby engaging the hook between the die slide and the indirect extrusion die cassette. It does. By such a method, it is possible to automate the exchange operation of the die cassette for indirect extrusion while effectively utilizing the die changer for direct extrusion, and the extrusion press has a structure in which both the direct extrusion and the indirect extrusion are used. In this case, the die exchange operation can be greatly reduced.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a die changing apparatus for an extrusion press according to the present invention.

FIGS. 1 to 3 show a die exchanging apparatus according to an embodiment. As shown in these figures, the die exchanging device includes a die changer main body 14 disposed on the side of the extrusion press 10, particularly on the end platen 12, a standby base 16 further disposed on the side thereof, and a die changer main body. The structure includes a traversing drive unit 18 that performs a die cassette transfer operation between the standby base 16 and the standby base 16.

First, the die changer main body 14 has a slide tray 22 mounted on a fixed frame 20 so as to be reciprocally movable in parallel with the press center of the extrusion press 10. The slide tray 22 is set to have a length capable of mounting two direct extrusion die cassettes described later in tandem.
It is slidably guided by a linear guide 24 formed on the fixed frame 20 corresponding to both side edge portions. A drive mechanism for moving the slide tray 22 back and forth is provided on a fixed frame 2 formed on the lower surface of the slide tray 22.
2, are provided in the lower surface of the slide tray 22 and the lower surface of the fixed frame 20 facing the slide tray 22, respectively, as shown in FIG.
And a pinion 30 that meshes with both rack teeth 28U and 28D at the same time. A rod 34 of a drive cylinder 32 attached to the fixed frame 20 is connected to the pinion 30. The pinion 30 is rolled by the reciprocating drive of the rod 34, so that the upper slide tray 22 can reciprocate back and forth. I have.

As shown in FIGS. 1 and 3, the stand-by base 16 provided alongside the die changer body 14 can be mounted with a direct extrusion die cassette 36 and an indirect extrusion die cassette 38 in tandem. The base is a rectangular plane, which is installed so as to be flush with the slide tray 22. In particular, as shown in FIG. 3, the indirect extrusion die cassette 38 is mounted so as to be located behind the direct extrusion die cassette 36, and the former die stem is arranged so as not to protrude from the base 16.

As described above, the die cassettes 36 and 38 are mounted on the slide tray 22 of the die changer body 14 and the standby base 16, respectively, as shown in FIG. As shown in the figure, a chair-like installation table 40 is attached and fixed, and the die cassettes 36 and 38 are mounted on these. In this case, the slide tray 22 is fixed at an interval at which the direct extrusion die cassettes 36 can be mounted in tandem (see FIG. 2). When the die 38 is mounted, the die stem is fixed at an interval so as not to interfere with the front mounting table 40 and the die cassette 36 mounted thereon. The die cassettes 36 and 38 can be traversed between the slide tray 22 and the standby base 16, and traverse guide ridges 42 are provided for this purpose.
On the other hand, transverse guide grooves 4 are provided on the lower surfaces of the die cassettes 36 and 38.
4 are formed.

As shown in FIG. 5, the die cassettes 36 and 38 are formed as rectangular blocks having a U-shaped mounting groove 46 for direct extrusion, and a die stem 48 for indirect extrusion. Is formed as a rectangular block through which a space surrounding the die stem holder 50 and the pressure plate 52 attached to the base end is formed. The lower surface is provided with the traversing guide groove 44, which is mounted in a state of being fitted to the ridge 42 of the installation table 40.

Further, in order to move the die cassettes 36 and 38 in a traverse manner between the slide tray 22 and the standby base 16, a traversing drive means 18 is disposed so as to straddle the slide tray 22 and the standby base 16. (See FIGS. 1 and 3). That is, a gate-shaped frame 54 that straddles the slide tray 22 and the standby base 16 is installed.
8 is installed. A traveling drive cylinder 60 is attached to the upper beam 56, and is connected to one end of the traversing carriage 58 so that the carriage 58 reciprocates between two positions immediately above the slide tray 22 and immediately above the standby base 16. I try to make it. An engagement lever mechanism 62 for traversing the die cassettes 36 and 38 is provided on the lower surface of the traversing carriage 58. As can be understood from FIGS. 1 and 4, a pair of shafts 64F, 64R are rotatably attached to the left and right side edges of the traversing carriage 58 along the traversing direction, and a pair of shafts 64F, 64R are respectively attached to the shafts 64F, 64R. L-shaped engagement levers 66F and 66R are provided. The engagement levers 66F, 66R are connected to the shafts 64F, 64.
The rotation of R allows the die cassette 36 to be swung downward, so that both sides of the die cassettes 36 and 38 can be sandwiched in the swung state. These engagement levers 66F, 6
In order to oscillate the 6R, both rod cylinders 68 are attached to the center of the traversing carriage 58 so as to be orthogonal to both shafts 64F and 64R.
0, and the engaging lever 66 on the extension side of the cylinder rod is formed.
F and 66R are projected downward. Also,
The engagement lever 66 is selectively driven out.
The meshing of the pinion racks is set so that one of F and 66R is swung downward while the other is swung upward.

Here, the exchange movement of the die cassettes 36 and 38 between the die changer main body 14 and the extrusion press 10 is performed by the die changer main body 14 with the extrusion press 10 interposed therebetween, as shown in FIG. This is performed by a die slide device 72 arranged on the opposite side. It has a die slide 74 which can run on a common guide provided on the front portion of the end platen 12 and which is used to feed and retract the die cassettes 36 and 38 to and from the die changer body 14 by the traverse drive cylinder 76. Shall do. The die slide 74 is a die cassette 36,
A hook 78 is provided on the transverse front surface of the die slide 74, and a hook groove 80 is formed on the die cassettes 36 and 38 for engaging with the hook. The hook groove 80 is formed in a hook shape so that the hook groove 80 does not come off in the traversing movement direction by the die slide 74 and is disengaged in the direction along the press center, that is, when the slide tray 22 of the die changer main body 14 moves. Has become.

The extrusion press 10 equipped with such a die exchanging device has a structure which combines both direct extrusion and indirect extrusion. For this reason, as shown in FIGS. Thus, both the direct extrusion die cassette 36 and the indirect extrusion die cassette 38 are fixedly held. And end platen 1
2 is provided with a shearing device 84 for separating and cutting the discard from the die when the direct extrusion press is completed, and a second shearing device 86 for similarly performing the discard separation and cutting when the indirect extrusion press is completed. It is attached to the structure. As a result, it is possible to cope with an extruding operation for two-time use.

The die exchanging operation according to the above configuration will be described with reference to FIG. In the state where the direct extrusion press work is first performed, as shown in FIG.
6 is mounted on the end platen 12, a billet (not shown) is loaded into a container 90 which is in contact with the die, and the billet is extruded toward the die by an extrusion stem. Extruded. When the extrusion is completed, the container 90 is separated from the end platen 12, and the first shearing device 84 attached to the end platen 12 is operated to operate the die and the container 9.
That is, separation and cutting are performed with the discard remaining in 0.

When the extrusion press 10 is changed for indirect extrusion, the initial arrangement of the die cassettes 36 and 38 is as shown in FIG.
(1). 36A (indicated by the symbol A) of the currently used direct extrusion die cassette, the die changer body 1
4 with a second direct extrusion die cassette placed on 3
6B (indicated by symbol B), and the die cassette 38 for indirect extrusion to be replaced (indicated by symbol K) is mounted on the standby base 16. From this state, the die slide 74
As a result, the die cassette A is removed from the press 10 and sent out to the die changer main body 14 to be mounted on the front mounting table 40 of the slide tray 22 (FIG. 2B). Next, when the slide tray 22 is advanced by the die changer main body 14, the hook 78 of the die slide 74 is engaged with the hook groove 80 of the second die cassette B previously mounted (FIG. 3 (3)). This is drawn into the center side of the extrusion press 10 and moved (FIG. 4 (4)). Then, the engaging lever mechanism 62 of the traversing drive means 18 is operated, and the front engaging lever 66F is swung downward to sandwich both side surfaces of the die cassette A (FIG. 5 (5)). At this time, the other engagement lever 66R
Will be swung up. The traversing carriage 58 is moved to the standby base 16 side by the traveling drive cylinder 60, and the die cassette A is transferred to the standby base 16 (FIG. 6 (6)). Thereby, a transfer space for the die cassette K for indirect extrusion is formed on the front mounting table 40 on the slide tray 22.

After that, the slide tray 22 is moved to the retreat limit position by the drive cylinder 32, and the front mounting table 40 is aligned with the rear mounting table 40 of the standby base 16, so that the die cassette K for indirect extrusion can be traversed. ((7) in the figure). By operating both rod cylinders 68 of the traversing carriage 58 located at the upper part of the standby base 16, the engaging lever 66R for the indirect die cassette K is swung downward to be engaged. At this time, the other engagement lever 66F is disengaged from the direct die cassette A. Then, by moving the trolley 58 toward the slide tray 22, the indirect die cassette K is transferred to the front mount 40 of the slide tray 22 (FIG. 8 (8)).

Next, the slide tray 22 is moved to the forward limit position so that the die cassette B temporarily evacuated to the press 10 side with respect to the rear mounting table 40 can be received (FIG. 9 (9)). The die cassette B is sent out by the die slide 74, and is transferred onto the slide tray 22 ((10) in the figure). Hook 7 of die slide 74
8 is engaged with the die cassette B, the hook 78 is switched to engage with the hook groove 80 of the indirect die cassette K by retracting the slide tray 22 from this state (see FIG. 11)), die slide 7
By pulling and moving 4, the indirect die cassette K can be moved to the press center and replaced (FIG. 12 (12)).

The die cassette 38 for indirect extrusion is the platen 1
8, the container (not shown) is driven toward the die stem 48 with the billet loaded in advance, and is extruded by a die provided between the die and the tip of the stem. The molding is done. After the completion of the extrusion, discard cutting is performed by the second shearing device 86 attached to the container housing 88 shown in FIG. 7, and the cycle is completed.

According to the extrusion press die exchanging apparatus having such a configuration, when the press is capable of performing both the direct extrusion and the indirect extrusion, the die cassette can be directly or indirectly extruded. The replacement work is performed very easily, and the replacement workability can be greatly improved. In particular, while effectively utilizing the hook engagement mechanism by the die slide 74 for drawing into the extrusion press side, the die cassettes 36 and 38 for the indirect extrusion as well as the direct extrusion are automatically exchanged. Thus, quick exchange of the die cassettes 36 and 38 can be realized.

In the above embodiment, the exchange of the direct extrusion die cassette 36 and the indirect extrusion die cassette 38 has been described. However, the exchange operation between the direct extrusion die cassettes having different dimensions can be applied. Needless to say.

[0023]

As described above, according to the present invention, a die standby base is provided adjacent to a die changer main body, in which a direct extrusion die cassette and an indirect extrusion cassette are tandemly mounted. Since the die cassette traversing drive means for transferring the die cassette between the base and the slide base of the die changer body is provided, it is possible to quickly perform the die exchange of the press which performs both the direct extrusion and the indirect extrusion. Excellent effects can be obtained.

[Brief description of the drawings]

FIG. 1 is a front view of a die exchanging apparatus according to an embodiment.

FIG. 2 is a side sectional view of the same device.

FIG. 3 is a plan view of the same device.

FIG. 4 is a sectional view of a main part of a traversing drive unit of the apparatus.

FIG. 5 is a front view and a sectional view of a direct extrusion die cassette and an indirect extrusion die cassette.

FIG. 6 is an explanatory diagram of a die cassette arrangement in an exchange state by a die slide.

FIG. 7 is a sectional view of a direct extrusion die cassette in a state where a platen is mounted.

FIG. 8 is a sectional view of the indirect extrusion die cassette in a state where a platen is mounted.

FIG. 9 is an explanatory diagram of a die cassette exchanging operation by the apparatus of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Extrusion press 12 End platen 14 Die changer main body 16 Standby base 18 Traversing drive means 20 Fixed frame 22 Slide tray 24 Linear guide 26 U-shaped groove 28U, 28D Rack teeth 30 Pinion 32 Drive cylinder 34 Rod 36 Direct extrusion die cassette 38 Indirect Extrusion die cassette 40 Installation table 42 Traversing guide ridge 44 Traversing guide groove 46 Mounting groove 48 Die stem 50 Die stem holder 52 Pressure plate 54 Gate frame 56 Upper beam 58 Traversing carriage 60 Travel driving cylinder 62 Engagement lever mechanism 64F 64R shaft 66F, 66R engagement lever 68 double rod cylinder 70 pinion rack mechanism 72 die slide device 74 die slide 76 traverse drive cylinder 78 hook 80 hook groove 82 die Cassette holder 84 First shear device 86 Second shear device 88 Container housing 90 Container

Claims (1)

(57) [Claims] 1. A slide tray disposed on a side portion of an extrusion press and capable of transferring an exchange die cassette to the press, the slide tray being capable of mounting a plurality of die cassettes and being movable back and forth. An extrusion press die exchanging apparatus comprising a die changer main body attached to a fixed frame, wherein a die capable of simultaneously mounting a direct extrusion die cassette and an indirect extrusion cassette adjacent to the die changer main body in tandem. A die exchanging device for an extrusion press, comprising: a standby base; and die cassette traversing drive means for transferring a die cassette between the die standby base and the slide base of the die changer body.