JPH06339723A - Products straightening guide device in extrusion press - Google Patents

Abstract

PURPOSE:To safely guide extrusion forming products into an introducing inlet of a following shear by providing a guide table freely turning around an axial center along an extrusion center and installing a portal guide frame provided with an arm whose both end parts extend downward on the upper side. CONSTITUTION:Products are prevented from being bent downward by preliminarily matching a conveying surface of a guide table 32 to the height of down surface of a hole 14 of an end platen 12, ascending the guide table 4 and mounting the products on the conveying surface when the products are extruded from the platen hole 14 and projected from the platen end surface. Further, the products are prevented from being bent upward by descending a portal guide frame 34 when the products are sent, and at the same time, bending to left and right directions is controlled by left and right arms 56R, 56L. Therefore, even if the extrusion products are extruded while being bent, the products are always controlled, the top end of products is suitably introduced into the introducing inlet of the shear and the products with large sectional area can be also suitably guided.

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 to a predetermined size.

[0002]

2. Description of the Related Art Generally, in an extrusion press, a billet that has been heated is loaded, and then the billet is pressed toward a die by a pressure operation by a stem, and is pressed while being formed 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 fixed 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 fed 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 equipped with an elevating table 5 mounted to be movable up and down by a guide rod 4 formed between it and the end platen 2, and is vertically driven by 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 set 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. And
If the extruded product is delivered in a bent state,
The height of the lift 5 is changed so that the product end is properly fed into the introduction opening of the subsequent shear.

[0005]

However, in the above-described conventional product straightening guide device, the straightening guide function is exerted to some extent when the extruded product is bent on the lower surface side, but the bending direction is left or right. It does not work in the diagonal direction. For this reason, in the past, an operator waited at the exit of the end platen, grabbed the end of the product with the Yatco, and guided it to the shear. 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 task in reality.

[0006] An object of the present invention is to pay attention to the above-mentioned conventional problems, and to safely follow an extruded product sent from an end platen regardless of the bending direction thereof without 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 installed between an end platen of an extrusion press and a shear that follows the guide device for guiding the extruded product delivered from the end platen to the shear,
Inside the platen hole of the end platen or in the passage of the extruded product at the rear of the platen hole, a guide table that is tiltable around the axis along the extrusion center is provided, and a gate type guide frame is provided above the guide table. Both ends of the guide frame are provided with arms extending downward.

[0008]

According to the above construction, the conveying surface of the guide table is adjusted in advance to the height of the lower surface of the hole of the end platen, and the product extruded from the platen hole is on standby. When the product protrudes from the platen end surface, it is possible to suppress the downward bending of the product by slightly raising the guide table and placing the product on the transport surface. Further, when the product is delivered, by lowering the gate-shaped guide frame, the upward bending of the product is suppressed, and at the same time, the left and right arm portions restrict the horizontal bending. The height of the gate type guide frame can be arbitrarily changed according to the degree of bending of the product, and it is possible to prevent the height of the shearing port arranged in the rear stage and the bending over the frontage, and guide it properly to the shear by mechanical force. It is possible. In addition, the guide table is tiltable, and when the extruded product bends diagonally downward and is sent out, it can be arranged so that the guide surfaces face each other in the bending direction, so bending is also suppressed. To be done. Even if the extruded product bends and is 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 guided. Of.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific 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 to which a product straightening guide device according to an embodiment is attached.

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 for facing the end surface of the end platen 12 to cut the extruded product into a predetermined size.
0 is placed. This has a rectangular frame 22 formed so as to surround a line for delivering extruded products, and a pair of upper and lower cutters 24 that are vertically guided by the frame 22. 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. 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 the upper part 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 attached to the end platen 12 via a pair of parallel guide rods 38 so as to be vertically movable, and
It can be driven up and down by a lifting cylinder mechanism 40 mounted between the two. A table body 44 is pivotally mounted on the upper surface of the lift table 36 via a connecting shaft 42 arranged parallel to the extrusion center line, and the table body 4 is connected via the connecting shaft 42.
4 can be tilted. In order to perform this tilting operation, a tilting cylinder mechanism 45 is attached to the lower surface of one end side of the table body 44, and this tilting cylinder mechanism 45
Is connected to the side surface of the. Therefore, by driving the tilting cylinder mechanism 45, the table main body 44 is rotated around the connecting shaft 42 and is tilted. Further, in 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. An operation piece is penetratingly attached to the shaft 46,
In addition, each piece is screwed onto the screw shaft 47 and attached thereto, 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 thus configured constitutes a so-called roller table mechanism, and the conveying surface formed by the upper end of the guide roller 48 supports the lower surface of the extruded product from the platen hole 14.

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 52 mounted on the end surface of the end platen 12 on the upper side of the platen hole 14.
It is supported so that it can move up and down. The gate-shaped guide frame 34 includes a beam member 54 directly connected to the cylinder mechanism 52 and a pair of arms 56 attached to both ends thereof.
It is configured in a gate shape by R and 56L, and can be moved down to the opening portion of the platen hole 14 by driving the lifting cylinder mechanism 52.

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 and 4 show the arm 5
6R and 56L are attached, sliding bars 58R and 58L slidably mounted along the side edges are provided inside the beam member 54, and arms 56R and 58L are provided at respective ends thereof. 56L is hanging. Also, each sliding bar 5
Racks 60R and 60L are fixed to the opposing surfaces of 8R and 58L, and a pinion 62 that meshes with the racks 60R and 60L is attached to the beam member 54 at a substantially central position. 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. To provide this drive, a transverse cylinder mechanism 64 is attached to the side edge of the beam member 54 and its rod 66
Is connected to a bracket 68 provided on one sliding bar 58R.

Further, such a gate type guide frame 34
A guide roof 70 is provided on the surface of the shear 20 facing the shear 20 as shown in FIG. 1 so as to be aligned with the shear roof 72 provided at the upper edge of the introduction opening of the shear 20 at the standby position of the product guide. The product is introduced into the opening of the shear 20 at least in the standby state.

The operation of the product straightening guide device of the extrusion press thus configured is as follows. When the product is extruded, the elevating cylinder mechanism 4 of the lower guide table 32 is operated so that the table conveying surface is substantially aligned 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 matching the shear roof 72. This work puts the gate-shaped guide frame 34 in a standby state. At this time, the distance between the pair of arms 56R and 56L of the gate type guide frame 34 is adjusted so as to match the opening width of the shearing 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 4 of the end platen 12. When this product is sent out along the extrusion center, there is no problem, but when the product end is bent and is pushed out from the extrusion center, the correction guide device 30 is used to perform the correction work. To drive.
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 out upward, the gate-shaped guide frame 34 is lowered, and its beam member 54 presses it down from above to press the bend.

When there is a left-right bend, the distance between the arms 56R and 56L of the gate-shaped guide frame 34 is reduced by the operation of the traverse cylinder mechanism 64, and the shear 2
The guide is straightened toward the 0 inlet.

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 the table body 44 is bent in the bending direction.
Should be inclined so that they face each other. On the other hand, if it is bent in an obliquely upward direction and extruded, the gate-shaped guide frame 3
The lowering operation of No. 4 and the adjustment of the distance between the arms 56R and 56L are performed to correct the bending inclination.

As described above, according to this embodiment, when the product extruded from the end platen 12 of the extrusion press 10 is bent, a mechanical straightening guide is provided regardless of the direction of the bending. It can be performed and properly guided to the shear 20. 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 quickly 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 center of extrusion, and the extruded product 78 can be bent and corrected laterally at the step portion. Further, a recessed depression is formed in the center of the slide table 74, and a screw rod is screwed in place of the cylinder mechanism 75 to enable reciprocal sliding, and it is possible to cope with the case where the product is bent left or right. Is also possible. Further, as in the present invention, the arms 56R, 56 of the gate-shaped guide frame 34 are
The L-shaped guide frame 3 is not limited to being arranged so that it can be driven up and down and can be moved in and out of each other.
Alternatively, the arms 56R and 56L may be fixedly installed at a fixed distance from each other on the frame 4, so that the gate-shaped guide frame 34 can be moved up and down and moved horizontally.

[0025]

As described above, in the product straightening guide device of the extrusion press according to the present invention, the guide table that follows the lower surface of the platen hole is mounted so as to be able to move up and down, and is tilted around the axis center along the extrusion center. Since it is drivably mounted, a gate-shaped guide frame is provided above the guide table, and arms extending downward at both ends of the guide frame are provided. Therefore, the extruded product sent from the end platen is bent in the bending direction. Regardless of the above, it is possible to obtain an excellent effect that the guide can be safely guided to the introduction port of the following shear without human work.

[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 side sectional view of a conventional product guide device.

FIG. 6 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 Traverse Cylinder mechanism

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[Procedure amendment]

[Submission date] August 10, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

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

FIG. 2 is a front view of the same.

FIG. 3 is a plan cross-sectional view of an arm driving 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 front view showing another embodiment of the product straightening guide device section of the present invention.

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 Codes] 10 Extrusion Press 12 End Platen 14 Platen Hole 20 Shear 24 Cutter 28 Shatter Table 30 Product Straightening Guide Device 32 Guide Table 34 Gate-type Guide Frame 36 Elevating Table 42 Connecting Shaft 44 Table Bull body 48 Guide roller 54 Beam member 56R, 56L Arm 64 Traverse cylinder mechanism

Claims (1)

[Claims] 1. A straightening guide device installed between an end platen of an extrusion press and a shear subsequent to the end platen for guiding an extruded product sent out from the end platen to the shear, in a platen hole of the end platen. Or, a guide table that can be tilted around an axis along the center of extrusion is provided in the passage part of the extruded product behind the platen hole, a gate-type guide frame is provided above the guide table, and both ends of the guide frame are A product straightening guide device for an extrusion press, which is provided with an arm extending downward.