JPH0337906Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention is a method for producing lees (hereinafter referred to as butts) from extruded material extruded from a die, which is a tool of an extrusion press.
This relates to a shear cutting machine that separates.

[Prior art]

As shown in FIG. 6, the shear cutting machine 1 is as follows:
It is assembled to an extrusion platen 2 of an extrusion press and has a structure including a cutting blade 4 that slides across the extruded material 3 in a direction orthogonal to it. In the extrusion press, the billet is extruded from the extrusion port of the die 9 in the direction of arrow A to become the extruded material 3, and the remaining part of the billet, the butt 3A, is cut by the cutting blade 4 and separated from the extruded material 3. . Reference numeral 6 denotes a shear formed by integrally assembling the cutting blade 4, and is slid back and forth in the direction of arrow B by a hydraulic cylinder 8.

[Problem that the invention attempts to solve]

In the above-mentioned conventional shear cutting machine, there is a problem that the butt sometimes sticks to the cutting blade 4 during the cutting operation, and this causes the movement of the shear 6 to stop and maintenance thereof takes time. Ta.

The present invention was devised in view of the problems of the prior art described above, and its purpose is to provide a shear cutting machine that can smoothly cut off a butt from an extruded material.

[Means for solving problems]

The shear cutting machine for an extrusion press according to the present invention is characterized in that a butt kicker for kicking off a butt is assembled and integrated with a cutting blade for cutting a butt. [Operation] At the same time as cutting the butt with the cutting blade, the butt is pushed away with the butt key.

〔Example〕

Next, the embodiments according to the present invention are shown in the drawings (Figs. 1 to 4).
The explanation will be based on Figure).

The shear cutting machine 10 according to this embodiment is assembled to an extrusion platen 12 of an extrusion press via a support frame 30, and slides in a direction (direction of arrow C) perpendicular to the extrusion direction of the extruded material to cut the end of the extruded material. a sear body 16 for cutting the butt of the part;
It is composed of a hydraulic cylinder 18 that slides.

As shown in FIG. 4, the shear body 16 is guided by wedge type guides 32 on both sides, and its upper end is connected to the cylinder rod 18 of the hydraulic cylinder 18.
A by a nut 19 and is adapted to slide across the extrusion opening of the extrusion press by actuation of a hydraulic cylinder 18. A cutting blade 14 is attached to the tip of the shear body 16.
6, and the butt is cut from the extruded material by sliding the shear body 16 forward. A cutter 20 that is slidable relative to the cutting blade 14 is assembled on the opposite side of the shear body 16 from the cutting blade assembly portion. This kicker 20 is a pneumatic cylinder 2 built in the sear body 16.
2, and is connected to a rod 22A that is integrated with the kicker 2.
0 is adapted to slide along the cutting edge 14. That is, the kicker 20 is actuated by a pneumatic cylinder 22 that operates at a predetermined timing after the shear body 16 slides, so as to push away the butt that protrudes from the tip of the cutting blade 14 and is cut by the cutting blade. It's summery.

Reference numeral 17 is a mounting bolt for attaching the cutting blade 14 to the shear body 16, and reference numeral 21 is a guide adjustment for adjusting the distance between the opposing guides 32, 32 to eliminate play between the shear main body 16 and the guide 32. It's a bolt. Further, reference numeral 40 denotes a die having an extrusion port (not shown) formed in the center thereof, and is supported by a die holder 42.
2 is assembled to a slide body 44 and fixed to the extrusion platen 12, but is configured to be able to slide along a guide rail 46. Reference numeral 34 indicates an air pipe to the pneumatic cylinder 22, and reference numeral 36 indicates a guide bush.

Next, the butt cutting operation performed by the shear cutting machine according to this embodiment will be explained.

A billet is pressed from a container (not shown) toward a die 40, and the billet passes through an extrusion port (not shown) of the die to become an extruded material. When an extruded material (product) of a predetermined length is obtained, a shear cutting machine is activated. When activated, the butt is separated from the extruded material.

To cut the butt, first, the hydraulic cylinder 18 is activated, the shear body 16 is lowered, and the cutting blade 14 cuts the butt. Furthermore, a butt kicker 20 kicks the butt to separate it from the cutting blade 14. Then, the shear body 16 rises and returns to its original position due to the return operation of the hydraulic cylinder 18. . At the same time as the shear body 16 moves upward, the pneumatic cylinder 22
is activated, and the butt kicker 20 also returns to its original position.

FIG. 5 is a cross-sectional view of main parts of another embodiment of the present invention, in which the shear main body 16 has both sides connected to square guides 32.
Shim 3 guided by A and placed at the four corners
The position of the shear body 16 can be adjusted by adjusting the position of the shear body 16 with an adjustment screw 33A. The rest is the same as the previous embodiment, and the explanation thereof will be omitted by giving the same reference numerals.

[Effect of idea]

As is clear from the above explanation, according to the present invention, the butt kicker kicks the butt at the same time as the cutting blade cuts the butt, so the butt does not stick to the cutting blade 14, and therefore the shear body returns smoothly and the butt is removed. Improves cutting work efficiency.

Further, in the embodiment described above, the butt kicker 20 is assembled into the shear body 16 to form an integrated structure, so the structure is very compact and simple, and there is less risk of failure. Furthermore, in the first embodiment, the shear body 16 is connected to the wedge type guide 32.
Cutting edge 1
4 can reliably guide the shearing work, and the cutting blade 14
damage is prevented.

[Brief explanation of the drawing]

1 is a perspective view of a shear cutting machine according to a first embodiment of the present invention, FIG. 2 is a front view thereof, FIG. 3 is a sectional view taken along the line shown in FIG. 2, and FIG. 2
5 is a cross-sectional view of a main part of a second embodiment of the present invention, and FIG. 6 is a schematic diagram of a conventional shear cutting machine. 10... Shear cutting machine, 12... Extrusion platen, 14... Cutting blade, 16... Shear body, 18...
...Hydraulic cylinder, 20...Butt pressure cylinder, 22
...Pneumatic cylinder, 32...Wedge type guide, 32A...Square guide, 40...Die, 42
...Die holder.

Claims (1)

[Scope of utility model registration request] A shear cutting machine that is assembled to the extrusion platen of an extrusion press and separates the lees from the extruded material extruded from the extrusion port, and the lees slides back and forth through a wedge-type guide in a direction perpendicular to the extrusion direction of the extruded material. A two-stage shear cutting machine for an extrusion press, characterized in that it is integrally equipped with a cutting blade for cutting and a cutter for pushing away the lees cut by the cutting blade.