JP3315154B2 - Billet scalping device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates are those which relate to billet metal extrusion press to an apparatus for scalping (stripped skin).

[0002]

2. Description of the Related Art Conventionally, as a scalping apparatus of this type, as shown in FIG. 9, a platen 32 having a scalping die 31 and a cylinder frame 34 having a scalping drive cylinder 33 are arranged opposite to each other. The cross head 35 disposed between the cylinder head 34 and the cylinder head 34 is reciprocally driven by the cylinder 33.The cross head 35 is provided with a pressure stem 37 having a stem head 36, and the stem head 36 is protruded by the cylinder 37. It is known that the scalping can be performed by independently moving the billet toward the die 31 through a pressure stem 37 by itself and being detachable from the die hole (Japanese Utility Model Publication No. 60-15616). reference).

In this apparatus, two billet loaders 38 and 39 are arranged between the die 31 and the crosshead 35 so as to be able to enter and exit in parallel from the side. Therefore, when loading a long billet, the billet is set to the scalping center using two billet loaders 38 and 39, and after moving the crosshead 35 forward and holding the billet by the stem head 36 and the die 31, The loader on the crosshead side is retracted to a position where it does not interfere with the crosshead, and then advances the crosshead 35 to start scalping the billet.

The crosshead 35 stops when approaching the die-side loader 39, and when the die-side loader 39 retreats to a position where it does not interfere with the die 31, the crosshead 35 advances again to continue scalping. In sculpting the short billet, the billet is loaded by using one billet loader 39 on the scalping die 31 side.
, The billet is clamped by the die 31 and the stem head 36, and the billet loader 39 is retracted.

[0005]

By the way, according to the above prior art, in the case of a long billet, two billet loaders 38, 3 are used.
9, the scalping cycle time is extended by the time that the crosshead 35 advances to the billet loaders 38, 39 and temporarily stops when the crosshead 35 retreats, and the two billet loaders 38, 3
Since a single billet is placed on the top of the plate, there is a problem that centering is troublesome and takes a lot of time, and workability and efficiency are poor.

In the case of a short billet, a crosshead
Stem head before 35 hits die 31 side billet loader 39
The billet length must be large enough to hold the billet between 36 and the scalping die 31, and there is a problem that the minimum billet length is limited. SUMMARY OF THE INVENTION The present invention has been made in view of the above situation, and aims at facilitating billet centering, shortening the scalping cycle time, and releasing the limitation of the minimum billet length, and further reducing the space. The present invention provides a billet loading method and a billet scalping device in a billet scalping device that can achieve the following.

[0007]

According to the present invention, the following technical measures have been taken in order to achieve the above object. That is, according to the present invention, a platen having a scalping die and a synda frame having a scalping drive cylinder are arranged to face each other, a crosshead is arranged between the platen and the cylinder frame, and the cylinder is reciprocated by the cylinder, In a scalping apparatus in which a crossing head is provided with a pressure stem having a stem head, and a protruding cylinder that allows the stem head to independently advance and retreat with respect to the die, a scalping device is provided between the scalping die and the pressure stem. Up and down one billet loader located below
And the billet is supplied upward from below.
Both are located below the die and the pressure stem,
When the billet loader rises, the
When the billet loader is in the lowered position.
It is arranged to advance to the tip receiving position
ing.

[0008]

[0009]

[0010]

According to the present invention, in the case of a long billet, when the billet on the billet loader is set between the scalping die and the pressure stem, the billet is pressed by the scalping cylinder and clamped between the die and the stem. Simultaneously, scalping is started, the billet loader exits and stands by at a position where it does not interfere with the crosshead, the chip discharge chute advances, and scalping is continued.

In the case of a short billet, when the billet on the billet loader is positioned between the scalping die and the pressure stem, the stem head projects and advances by the cylinder, and when the billet is held between the die and the stem head, The billet loader retreats, the billet is protruded, and the pressurizing stem is advanced together with the crosshead while being pressed by the cylinder. The billet is pinched by the pressurizing stem and the die, and at the same time, the chip discharge chute advances to start scalping. Note that the stem head relatively retreats into the pressure stem as the pressure stem advances.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. The drawing shows an example of a scalping device for a billet for an extrusion press for carrying out the method of the present invention, and a pedestal 2, 3
A platen 4 and a cylinder frame 5 are opposed to each other via a tie rod, and both are connected by a tie rod 6, and a crosshead 7 is attached to the tie rod 6 so as to reciprocate opposite the platen 4. .

A scalping die 9 is mounted on the platen 4 via a die holder 8, and a sculpted chip stripper 10 surrounding the die 9 is attached to a cylinder 11.
It is provided so that it can move forward and backward. In the cylinder frame 5, two scalping cylinders 12 are tie rods.
The piston rod 13 is arranged in parallel with the piston rod 6 so as to protrude toward the crosshead 7, and the outer end of the piston rod 13 is connected to the crosshead 7 so as to drive the crosshead 7 forward and backward. .

At the center of the crosshead 7, a hollow pressure stem 14 is provided so as to protrude toward the die 9 side. On the opposite side of the stem 14, the stem 14 is concentric with the stem 14, and after the scalping is completed. A projecting cylinder 15 for projecting the billet is mounted, and a sliding rod 16 connected to a piston rod 15A of the projecting cylinder 15 slidably penetrates through the inside of the pressure stem 14, and the front end of the rod 16 is The stem 14 is connected to a stem 14 located at the front end and a stem head 17 separate from the stem 14.

The floor 1 on the side of the gantry 2 is provided with a pit 18, a billet loader 19, a fixed chip discharging chute 20.
A and a movable chip discharge chute 20B are provided.
The billet loader 19 is provided movably up and down along a vertical guide 21 provided on the side wall of the pit 18, and a hydraulic cylinder 22
, And a plurality of roller blocks 23 for supporting the billet B are provided at the upper end.

As shown in FIGS. 5 and 6, the roller block 23 has a plurality of rollers 25 mounted on a block base 24 via a shaft 26 so as to be inclined and rotatable, as shown in FIGS. The mounting hole 27 on the loader top plate 19A is elongated, is mounted so as to be adjustable in position by a bolt 28, and is adjustable by a pull bolt 29 and a push bolt 30, so that the centering of the billet B can be adjusted. Can be done easily.

The fixed chip discharge chute 20A is fixed in the pit 18 immediately below the die 9 so as not to hinder the lifting and lowering of the billet loader 19. The movable chip discharge chute 20B is mounted on the gantry 3. The billet loader 19 is disposed so as to be able to move forward and backward in the horizontal direction by the driving cylinder 20C and not to interfere with the billet loader 19.
When the billet loader 19 rises, it retreats to the standby position shown by the solid line in FIG. 1, and after the billet loader 19 descends, it is advanced by the cylinder 20C to be positioned on the billet loader 19 as shown by the two-dot chain line in FIG. It is connected to the discharge chute 20A.

When the scalping of the billet B is completed, the movable chip discharge chute 20B is retracted to the standby position by the cylinder 20C. In the above embodiment,
When loading the long billet B, as shown in FIG. 1, the pressurizing stem 14 and the movable chip discharge chute 20B are located at the retreat limit, and the billet loader 19 is moved to the billet loader 19.
Put. Billet B placed on roller block 23
Is automatically centered by the roller 25 as shown in FIG. Then, the hydraulic cylinder 22 is operated to raise the billet loader 19, and set the centering with respect to the scalping die 9 at a position indicated by a two-dot chain line in FIG.

Next, the scalping cylinder 12 is operated to advance the pressurizing stem 14 together with the crosshead 7, and the billet B is clamped by the scalping die 9 and the pressurizing stem 14, and at the same time, the billet loader 19 descends and retreats. The movable chip discharge chute 20B advances onto the billet loader 19 and scalping is started. Therefore, after starting scalping
Even if 19 leaves, scalping is performed without stopping the crosshead 7. And when the scalping is over,
The movable chip discharge chute 20B is in the standby position and the cylinder 20C
Retreat by

Next, when loading the short billet B, first, the movable chip discharge chute 20B is retracted,
The billet B is placed on the loader 19 and raised, the centering is performed on the scalping die 9, and the cross head 7 is advanced by the scalping cylinder 12 until the pressure stem 14 does not contact the billet loader 19 and stopped. After that, only the stem head 17 is advanced by the protruding cylinder 15, and as shown in FIG.
And the billet B are clamped between the stem head 17.

Therefore, as shown in FIG.
After operating the billet loader 19 to lower the billet loader 19 to a position where it does not interfere with the crosshead 7 and the pressure stem 14, the movable chip discharge chute 20B is advanced, and the scalping cylinder 12 is operated to move the crosshead 7 Move forward,
Scalping is started at the same time as the front end surface of the pressure stem 14 comes into contact with the billet B. At this time, the stem head 17 relatively moves backward while the crosshead 7 advances.

After the short billet B is held between the scalping die 9 and the stem head 17, the billet loader 19 descends, so that the length of the short billet B is not limited. The present invention is not limited to the above-described embodiment. For example, the billet loader 19 can be adopted as a conventional one in which the billet loader 19 moves horizontally in the front-rear direction, and the design can be appropriately changed.

[0023]

According to the present invention, a platen provided with a scalping die and a cylindrical frame provided with a scalping drive cylinder are arranged to face each other, and a crosshead is arranged between the platen and the cylinder frame to reciprocate by the cylinder. being driven, together with the pressure stem having a stem head to the crosshead is provided, in a scalping device projecting cylinder is provided to advance and retreat with respect to the die stem head alone, the skull ping die and pressure One village located below between the stems
The loader can be set up and down freely, and the billet can be lifted from below.
It is characterized by the fact that it is supplied
The whole installation can be made compact and space saving
To reduce equipment costs and improve workability and efficiency
Can be Further, the present invention provides a method for manufacturing a semiconductor device comprising:
The tip discharge chute, located below between the
When the let loader rises, it retracts to the standby position and
Advance to the tip receiving position when it is in the lowered position
It is characterized by being arranged like
To allow the loader to move up and down without interference.
In addition, a chip discharging function can be ensured.

[0024]

[0025]

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of an apparatus according to an embodiment of the present invention.

FIG. 2 is a partially broken plan view of FIG.

FIG. 3 is a right side view of FIG. 1;

FIG. 4 is an enlarged left side view of the billet loader.

FIG. 5 is an enlarged partial cutaway view of a portion A in FIG. 4;

FIG. 6 is a side view showing a roller block adjusting unit of the billet loader.

FIG. 7 is an explanatory view of a loading state of a short billet.

FIG. 8 is an explanatory diagram of a scalping start state of a short billet.

FIG. 9 is a plan view showing a conventional example.

[Explanation of symbols]

 Reference Signs List 4 Platen 5 Cylinder frame 7 Crosshead 9 Scalping die 12 Scalping drive cylinder 14 Pressurizing stem 15 Protruding cylinder 17 Stem head 19 Billet loader 20B Movable chip discharge chute

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-246452 (JP, A) JP-A-4-304922 (JP, A) Jiko 60-15616 (JP, Y2) (58) Survey Field (Int.Cl. ⁷ , DB name) B23D 79/12 B23Q 7/00 B23Q 11/00 B23B 25/00

Claims (1)

(57) [Claims] A platen having a scalping die;
Cinder frame with scalping drive cylinder
Are located opposite to each other, between the platen and the cylinder frame.
Cross head is arranged and reciprocated by the cylinder
Pressurized stem with stem head in crosshead
Is provided, and the stem head is independently attached to the die.
A protruding cylinder is provided that can move forward and backward.
In the scalping apparatus, the scalping die and the
One billet loader located below between the pressure stems
Arrangeable up and down so that the billet is supplied from below
And a lower position between the die and the pressure stem.
And move the chip discharge chute when the billet loader rises.
To the standby position, and the billet loader is in the lowered position.
That it was arranged to advance to the tip receiving position
Characteristic billet scalping device.