JP2528040B2 - Extrusion press product straightening guide device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a product straightening guide device for an extrusion press, and more particularly to a product straightening guide device suitable for guiding a product extruded from an end platen of an extrusion press to a shear for cutting it into a predetermined size.

[0002]

2. Description of the Related Art Generally, in an extrusion press, after a heated billet is loaded, the stem is pressed by a stem to press the billet toward a die and press it while forming it into a predetermined shape determined by the die shape of the die. I'm trying to put it out. The extruded product is sent out through a hole in the end platen, and cut into a predetermined size by a shear installed near the exit side of the end platen.

By the way, since the cross section of the product molded by the extrusion press and extruded is not necessarily a line-symmetrical shape, the extrusion flow of the billet during extrusion is not uniform over the entire cross section of the die hole type. For this reason, the molded product bends in the direction of poor flow when extruded from the die hole opening, and the amount of deviation from the extrusion center at the end of the product increases as it is sent out from the end platen. If this is left unattended, the tip of the extruded product will not enter the entrance of the shear, so the product is properly guided to the shear.

A conventional product guide of this type is shown in FIGS.
As shown in FIG. 3, the end platen 2 is attached to the end surface of the end platen 2 in which the hole 1 serving as the product outlet is opened. This is a guide rod 4 formed between the end platen 2 and
It is equipped with an elevating table 5 which is attached so as to be able to move up and down by means of a cylinder device 6. A pair of rollers 7 are attached to the upper surface of the lifting table 5, and the height of the lifting table 5 is determined so that the roller surface is substantially aligned with the lower surface of the platen hole 1 to move the extruded molded product by rollers. I am doing it. When the extruded product is delivered in a bent state, the height of the lifting platform 5 is changed so that the end of the product is properly delivered into the introduction opening of the subsequent shear.

[0005]

However, in the above-described conventional product straightening guide device, the straightening guide function is exhibited to some extent when the extruded product is bent on the lower surface side. It does not work in the diagonal direction. For this reason, in the past, an operator waited at the exit of the end platen, grasping the product end with the Yatco,
There was something like guiding this to Shah.
However, it is possible to directly grasp and straighten the product when the product size is small, but when the product size is large, it becomes a very difficult work in reality.

The object of the present invention is to pay attention to the above-mentioned conventional problems, and to safely follow an extruded product sent out from an end platen regardless of the bending direction thereof without any human work. An object of the present invention is to provide a product straightening guide device for an extrusion press, which can be guided to an inlet of a shear.

[0007]

In order to achieve the above object, a product straightening guide device for an extrusion press according to the present invention comprises:
A straightening guide device which is installed between an end platen of an extrusion press and a shear following it, and which guides an extrusion product sent from the end platen to the shear,
A guide table is provided in the platen hole of the end platen or in the passage portion of the extruded product at the rear of the platen hole, the guide table being tiltable about the axis along the extrusion center.

[0008]

According to the above construction, the conveying surface of the guide table is adjusted in advance to the lower surface height of the hole of the end platen,
Wait for the product to be pushed out from the platen hole. When the product projects from the end surface of the platen, the guide table can be lifted slightly so that the product is placed on the transport surface, so that the downward bending of the product can be suppressed.
Further, the guide table is tiltable, and when the extruded product is bent in an oblique direction and is fed out, the guide table is tilted so that the guide surfaces face each other in the bending direction, and if necessary. Since it can be raised and lowered, the bending can be corrected mechanically as well. Even if the extruded product is bent and extruded in this way, it is always regulated and the product tip is properly guided to the shear introduction port, so that not only small-section products but also large-section products can be properly straightened and guided. Of.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A concrete embodiment of a product straightening guide device for an extrusion press according to the present invention will be described in detail below with reference to the drawings.

1 and 2 are a side sectional view and an end view of an end platen hole portion of an extrusion press equipped with a product straightening guide apparatus according to an embodiment.

An end platen 12 is arranged at a rear end portion of the extrusion press 10, and a hole 14 which is a passage for a product extruded by a die is opened in the end platen 12. A lower surface table 16 is attached to the inner surface of the platen hole 14, and a carbon liner 18 is laid on the lower surface table 16 to prevent the extruded product from being damaged.

Further, a shear 2 facing the end surface of the end platen 12 for cutting the extruded product into a predetermined size.
0 is arranged. This has a rectangular frame 22 formed so as to surround a delivery line for extruded products, and a pair of upper and lower cutters 24 that are guided by the frame 22 and move up and down. A hydraulic cylinder 26 is connected to each cutter 24, and is driven and cut when the extruded product has passed a predetermined length by hydraulic pressure. Further, the shear 20 is provided with a shear table 28 on which the extruded product is placed, and the product is placed on the table 28 and cut.

The product straightening guide device 30 according to the embodiment is installed between the end platen 12 of the extrusion press 10 and the shear 20, and corrects the bending of the extruded product, and the central portion of the shear 20. To guide you.

The product straightening guide device 30 is provided with a guide table 32 for straightening and guiding the lower part of the product extruded from the platen hole 14, and a gate type guide frame 34 for straightening and guiding the left and right and upper parts of the product. .

First, the guide table 32 is connected to an elevating table 36 mounted and supported on the end surface of the end platen 12 below the hole 14. The lift table 36 is vertically movably attached to the end platen 12 via a pair of parallel guide rods 38, and can be vertically moved by a lift cylinder mechanism 40 provided between the guide rods 38. A table body 44 is pivotally attached to the upper surface of the lift table 36 via a connecting shaft 42 arranged parallel to the extrusion center line, and the table body 44 can be tilted through the connecting shaft 42. There is. In order to perform this tilting operation, a tilting cylinder mechanism 45 is attached to the lower surface on one end side of the table body 44, and this is connected to the side surface portion of the lifting platform 36. Therefore, by driving the tilt cylinder mechanism 45, the table body 4
4 is rotated around the connecting shaft 42 and is arranged so as to be inclined. Further, on the table body 44, a guide roller 48 is attached to a shaft extending in a direction orthogonal to the center of extrusion, and a screw shaft 47 having a handle arranged in parallel with the guide roller 48 and a pair of parallel shafts 46 are provided. Operation pieces are mounted through the shaft 46, and each piece is attached by screwing to a screw shout 47, and the interval between the operation pieces can be adjusted according to the width of the product to be extruded. This adjustment is performed by rotating the shaft 47 parallel to the rollers 48 with the handle 50 to move the operation piece. The guide table 32 as described above constitutes a so-called roller table mechanism, and the conveying surface formed by the upper end of the guide roller 48 is the platen hole 14.
It is designed to support the underside of extruded products.

On the other hand, a portal type guide frame 34 is arranged above the guide table 32 as described above. This is a lifting cylinder mechanism 5 attached to the end surface of the end platen 12 on the upper side of the platen hole 14.
It is supported by 2 so that it can move up and down. The gate-shaped guide frame 34 is constituted by a beam member 54 directly connected to the cylinder mechanism 52 and a pair of arms 56R and 56L attached to both ends of the beam member 54, and drives the lift cylinder mechanism 52. As a result, it can be lowered and moved to the opening portion of the platen hole 14.

The pair of arms 56R and 56L are attached to the beam member 54 so as to be movable laterally.
The interval is adjustable. 3 to 4 show the arm 5
The mounting structure of 6R and 56L is shown, and the beam member 54 is shown.
Sliding bars 58R, 58L mounted slidably along the side edges are provided in the inside of each of the arms, and arms 56R, 56L are suspended at the respective ends thereof. Further, racks 60R and 60L are fixed to the facing surfaces of the sliding bars 58R and 58L, and a pinion 62 that meshes with the racks 60R and 60L at the same time is attached to a substantially central position of the beam member 54. Therefore, by sliding one sliding bar 58R (58L), the other sliding bar 58L (58R) is slid in the opposite direction via the pinion 62, so that the distance between the pair of arms 56R, 56L is increased. Is to be changed. In order to give this drive, a traverse cylinder mechanism 64 is attached to the side edge portion of the beam member 54, and a bracket 68 having a rod 66 thereof provided on one of the sliding bars 58R.
Connected to.

Further, as shown in FIG. 1, a guide roof 70 is provided on the surface of the gate-shaped guide frame 34 facing the shear 20, and at the standby position of the product guide, the upper edge of the introduction opening of the shear 20 is provided. The product is introduced into the opening of the shear 20 at least in the standby state so that the product is introduced into the shear roof 72.

The operation of the product straightening guide device of the extrusion press thus configured is as follows. During the product extruding operation, the elevating cylinder mechanism 4 of the lower guide table 32 is operated so that the table conveying surface is arranged so as to substantially coincide with the lower surface of the extruded product. Then, the upper gate-shaped guide frame 34 is lowered by driving the elevating cylinder mechanism 52, and the guide roof 70 is moved to a position where it coincides with the shear roof 72. This work puts the gate-shaped guide frame 34 in a standby state. At this time, the interval between the pair of arms 56R and 56L of the gate-shaped guide frame 34 is adjusted so as to match the opening width of the introduction port of the shear 20. This is done by the traverse cylinder mechanism 64.

When the extrusion work is started in the state where the above-mentioned preparation work is performed, the product is sent out from the hole 14 of the end platen 12. When this product is sent out along the extrusion center, there is no problem, but when the end of the product bends and is pushed out from the extrusion center, the correction guide device 30 is driven to perform the correction work. To do. That is, when the bending direction of the extruded product is downward, the height of the guide table 32 is adjusted so that the end of the product is smoothly transferred to the shear table 28. When it is pushed upward, the gate-shaped guide frame 34 is lowered, and the beam member 54 presses it down from above to hold down the bend.

If there is a left-right bend, the distance between the arms 56R and 56L of the gate type guide frame 34 is reduced by the operation of the traverse cylinder mechanism 64, and the shear 20
The guide is straightened toward the entrance of the.

On the other hand, when the extruded product is bent obliquely downward and is extruded, the tilting cylinder mechanism 45 is driven on the guide table 32 and tilted so that the table body 44 faces in the bending direction. Good. On the other hand, when it is bent and bent in the upward oblique direction, the straightening operation is performed so as to suppress the bent inclination by the descending operation of the gate-shaped guide frame 34 and the adjustment of the distance between the arms 56R and 56L.

As described above, according to this embodiment, when the product extruded from the end platen 12 of the extrusion press 10 is bent, regardless of the direction of the bending,
It is possible to guide the shear 20 properly by performing a mechanical correction guide. Since the guide is performed while correcting the bend, there is an advantage that the cutting work by the shear 20 in the subsequent stage is facilitated and the load of the bend correcting force on the shear 20 itself is small. Since it is driven by the cylinder mechanism without requiring any particular human work, it is possible to promptly respond to the bending direction of the extruded product and perform proper correction.

In the above embodiment, the guide table 3
Although 2 has a roller table structure, as shown in FIG. 5, a slide table 74 formed in a step shape is installed on the table body 44, and the slide table 74 is attached to a cylinder mechanism 76 attached to a side end portion of the table body 44. The structure may be connected. According to this, the slide table 74 can be slid in the direction orthogonal to the extrusion center, and the extruded product 78 can be bent and corrected laterally at the step portion. Further, a recessed depressed portion is formed at the center of the slide table 74, and the cylinder mechanism 7
It is also possible to screw a screw rod in place of 6 and make it reciprocally slidable so that the product bending direction can be dealt with in either case.

As described above, the product straightening guide apparatus for the extrusion press according to the present invention is provided with a shaft center around the extrusion center in the platen hole of the end platen or in the passage of the extruded product behind the platen hole. Since a tiltable guide table is provided, the extruded product sent from the end platen can be safely guided to the subsequent shear inlet without manual work regardless of the bending direction. It is possible to obtain an excellent effect that it can be made.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a structure of a product straightening guide apparatus according to an embodiment.

FIG. 2 is a front view of the same.

FIG. 3 is a plan cross-sectional view of an arm drive mechanism of the gate type guide frame.

FIG. 4 is a cross-sectional view of an arm driving mechanism of the gate type guide frame.

FIG. 5 is a cross-sectional view showing a modified example of the guide table.

FIG. 6 is a side sectional view of a conventional product guide device.

FIG. 7 is a front view of a conventional product guide device.

[Explanation of symbols]

 10 Extrusion Press 12 End Platen 14 Platen Hole 20 Shear 24 Cutter 28 Shear Table 30 Product Straightening Guide Device 32 Guide Table 34 Gate Type Guide Frame 36 Elevating Table 42 Connecting Shaft 44 Table Body 48 Guide Roller 54 Beam Member 56R, 56L Arm 64 Transverse Cylinder mechanism.

Claims (1)

(57) [Claims] 1. A straightening guide device that is installed between an end platen of an extrusion press and a shear that follows the guide plate and guides an extruded product sent out from the end platen to the shear, in a platen hole of the end platen. A product straightening guide device for an extrusion press, characterized in that a guide table that can be tilted around an axis along the center of extrusion is provided in the passage portion of the extruded product behind the platen hole.