JPS5952004B2 - Extrusion press with container changing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an extrusion press equipped with a container exchange device,
More particularly, the present invention relates to an extrusion press with a container changing device which allows the container to be easily withdrawn from the container holder via mutually cooperating locking mechanisms on the container side and on the crosshead side.

In an extrusion press used for extrusion molding of metal, when a liner provided on the inner peripheral surface of a container becomes worn, it is necessary to pull out the container from the container holder and replace it.

Conventionally, for example, a locking ring with a ring attached to the head of the bolt was attached to the cylinder side, a hook was attached to the crosshead side, and
A method was adopted in which the two were connected as needed and the container was pulled out or inserted, but since the cylinder itself was heated to a very high temperature, it was dangerous to operate, and the hook and locking ring had to be connected directly by hand. Because it is locked or locked,
It was difficult to work in a narrow space, and it was also difficult to adjust the distance between the two.

Therefore, an object of the present invention is to provide an extrusion press equipped with a container exchange device that allows easy operation of engaging and disengaging a container and a crosshead, and facilitates exchange of containers.

In order to solve this problem, the present invention has a structure in which a locking member that is rotatable and slidable in the axial direction is provided on the crosshead side, and a hole is formed on the cylinder side into which this locking member is inserted and fixed. Adopted.

Hereinafter, the present invention will be described in detail based on one embodiment shown in the drawings.

1 is a cylindrical container, which is removably attached to a container holder 2. As shown in FIG.

A heater section 3 is provided on the outer periphery of the container 1 inside the container holder 2, and a heat insulating material 4 is interposed between the heater section 3 and the container holder 2.

Further, a liner 5 is integrally attached to the inner peripheral surface of the container 1.

In addition, a lock ring groove 6 is formed all around the outer peripheral surface of the container 1 near the edge on the die side (left side in FIG. 1), and by moving the lock ring 7 in and out of the lock ring groove 6, The container 1 is attached to and detached from the container holder 2.

A billet 8 of extruded material is charged into the cylindrical space inside the liner 5, and is extruded toward the die side by the front end surface of a stem 9 driven via a cylinder mechanism (not shown). Molding is performed.

The rear end of the stem 9 is attached to a crosshead 10, and a cylindrical crosshead ring 11 is attached to the container side of the crosshead 10, surrounding the stem 9.

A locking member 12 is provided inside the body of the cross head ring 11.
is provided rotatably and slidably in the axial direction.

20 The locking member 12 is formed into a bar-like shape as a whole, and a locking portion 13 exemplified as a flange having an oval cross section is formed near the tip thereof, and the center portion of the locking member 12 is includes a large-diameter portion 14 and a bundle 14a integrated therewith.
is formed, and this bundle 14a is operably exposed to the outside of the crosshead ring 11.

Further, the rear end of the locking member 12 is formed as a guide bar 15 having a small diameter.

In front of the locking part 13, that is, at the tip of the locking member 12, a circular dish-shaped protrusion 12a is provided, and between the locking part 13 and the large diameter part 14, a round bar part 12b is provided. ing.

The locking member 1 is attached to the tip of the cross head ring 11.
The cross-sectional shape of the locking portion 13 in No. 2 is almost the same as that of the locking portion 13 in FIG.
Two through holes 16 having an oval cross-sectional shape are formed through which the through holes 16 can pass, and cutout holes 11a through which the large diameter portion 14 and the like can move are provided at the rear of the through holes 16, respectively.

Further, a guide groove 17 is formed from the rear part of the crosshead ring 11 to the crosshead 10, in which the guide bar 15 of the locking member 12 is slidably accommodated.

On the other hand, at a position facing the through hole 16 at the end of the crosshead ring 11 of the container 1, an oval through hole 18 having the same cross-sectional shape as the through hole 16 and through which the locking part 13 can pass is formed. A circular hole 19 having a diameter substantially equal to the major axis of the through hole 18 and therefore the major axis of the locking portion 13 of the locking member 12 is formed continuously to the through hole 18 .

Further, the tip projection 12 of the locking member 12 is continuous with the circular hole 19.
A concave portion 20 having a diameter approximately equal to a is formed coaxially.

In addition, in the illustrated example, the diameter of the opening on the die side is smaller than the opening on the crosshead 10 side of the container holder 2, so the container 1 is not inserted into the container holder 2. When charging, the stepped portion 1a formed near the die side end of the container 1 is inserted into the container holder 2.
comes into contact with and regulates its forward limit.

Further, a lock ring groove 6 is formed around the entire circumference in contact with the outer end of the container holder 2 near the die side end protruding from the end surface of the container holder 2 of the container 1, and a lock ring groove 6 is formed in the lock ring groove 8 in contact with the outer end of the container holder 2. By fitting the ring 7, the container 1 is prevented from retreating.

As shown in FIGS. 4 and 5, this lock ring 7 is formed in two parts, and one ends of both arcuate pieces 7a, 7a are supported by a pin 21 attached to the end face of the container holder 2 so as to be openable and closable. ing.

A link mechanism 22.22 is provided at each other end, and a lock member 23 having an axis in the diametrical direction of the container 1 is rotatably provided by connecting the link mechanisms 22.22.

This locking member 23 is formed into a substantially rod-like shape as a whole, and a flange portion 24 with an oval cross section that bulges out only in one direction is formed in the middle, and a large diameter portion 25 is formed near the tip. A bundle 726 is attached to the tip.

On the other hand, a locking member 27 is fixed on the outer circumferential surface of the container holder 2 and on the radial extension of the groove 6 with bolts 28 or the like.

This locking member 27 is formed with an elongated through hole 29 that is substantially the same in cross-section as the flange portion 24 of the locking member 23 .

Of course, when the longitudinal direction of the flange part 24 and the longitudinal direction of the through hole 29 coincide, the flange part 24 can freely pass through the through hole 29, and the longitudinal direction of the flange part 24 is, for example, 90°.
When the flange portion 24 is rotated so as not to coincide with the longitudinal direction of the through hole 29, the flange portion 24 can be locked in contact with the upper surface or the lower surface of the locking member 27.

Next, the operation of this embodiment configured as above will be explained.

When replacing container 1, first replace lock ring 7.
, and the connection between container 1 and container holder 2 is established.

That is, when removing the container 1 in the locked state from the container holder 2 as shown in FIG.
The worker puts on gloves and rotates the bundle 26 so that the major axis of the flange portion 24 of the locking member 23 and the major axis of the through hole 29 of the locking member 27 match, and the bundle 26 is aligned with the axis of the container 1. Push it toward the core part, pass the flange part 24 through the through hole 29, and move the flange part 24 to the container 1 side, which is the inside of the locking member 27.

Next, by rotating the bundle 26 again, the long diameter of the flange portion 24 and the long diameter of the through hole 29 of the locking member 27 are alternated, so that the flange portion 24 is not pulled out from the through hole 29 outward. .

The state at this time is shown in FIG.

When the locking member 23 moves radially in the direction approaching the container 1 as described above, the link mechanism portion 22.22 is rotated in a direction almost parallel to the end of the arcuate piece 7a of the lock ring 7, Both link mechanisms 22, 22 become substantially straight, and accordingly, the arcuate pieces 7a, 7a are pulled out from the groove 6 of the container 1 to the outside.

Then, the engagement between the container holder 2 and the container 1 is released, so that the container 1 can be pulled out via the drawing means.

After the container 1 and the container holder 2 are connected, the crosshead 10 is advanced toward the container 1 and the crosshead ring 11 is brought into contact with the container 1.

Next, the handle 14a protruding outward of the crosshead ring 11 is rotated 90 degrees to align the long diameter of the locking portion 13 of the locking member 12 in the standby position within the crosshead 11 with the front end of the crosshead ring 11. Through hole 16 and container 1
Applying force to the handle 14a in the direction of the container, the locking portion 13 of the locking member 12 is passed through the holes 16 and 18 so that the long axis of the through hole 18 is parallel to the circular hole 19. Insert.

Then, the handle 14a is rotated 90 degrees.

Then, the long axis of the locking part 13 of the locking member 12 is perpendicular to the long axis of the through holes 18 and 16, so the container 1 and the crosshead 10 are firmly connected via the locking member 12. .

This state is shown in the upper part of FIG. In this state, the crosshead 10 can be moved backward to remove the container 1 from the container holder 2.

Note that before the container 1 is completely removed from the container holder 2, the container 1 is suspended with a crane or the like to keep it horizontal.

Next, place the removed container 1 into the cross head ring 11.
When separating from the handle 14a of the locking member 12
is operated from the outside of the crosshead ring 11 and rotated so that the long axis of the locking member 13 is parallel to the long axis of the through hole 18 of the container 1 and the through hole 16 of the cross head ring 11, and force is applied to the handle 14a. In addition, it is moved in the direction of the crosshead 10.

Then, the locking portion 13 of the locking member 12 passes through the through holes 18 and 16 and returns to the standby position within the crosshead ring 11.

In this case, the guide bar 15 of the locking member 12 is inserted into the guide groove 1.
By sliding in 7, the locking member 12 is slid correctly in the axial direction.

In this way, the container 1 and the crosshead 10 are separated.

Return the locking member 12 into the crosshead ring 11, and when the locking portion 13 passes through the through hole 16, rotate the handle 14a to 9.
If the locking member 12 is rotated by 0°, the long axis of the locking portion 13 and the long axis of the through hole 16 are perpendicular to each other, so that the locking member 12 will not be accidentally pulled out from the crosshead ring 11.

The state of the locking member 12 at this time is shown in the lower part of FIG.

When attaching a new container 1 to the container holder 2, the operation is almost the reverse of the above-described operation.

That is, the new container 1 is attached to the crosshead ring 11.
When the through holes 16 and 18 are aligned with each other, turn the handle 14a of the locking member 12 by 90 degrees, move the locking member 12 forward, and lock the locking part 13 with the transparent (formerly 6
, 18 and into the circular hole 19, and when the protruding part 12a is fitted with the four parts 20, the handle 14a is rotated 90 degrees again, and the container 1 is first held by the crosshead ring 11.

Subsequently, the crosshead 10 is advanced to load the container 1 into the container holder 2.

When container 1 is in the designated position of container holder 2,
The locking member 12 is actuated to disconnect the crosshead ring 11 and the container 1, and the crosshead 10 is moved backward.

Next, perform the reverse operation to disconnect the container 1 and container holder 2, turn the handle 26, pull it, turn it again, insert the lock ring 7 into the groove 6, and As shown in the figure, a container 1 is fixed to a container holder 2.

As is clear from the following description, according to the present invention, a locking member having a locking part with an oval cross section at the tip is rotatable and inside a crosshead ring attached to a crosshead of an extrusion press. The structure is such that the locking member is slidable in the axial direction and has a hole in the surface that contacts the crosshead ring of the container through which the locking member is locked, so that the locking member is not exposed to the outside of the crosshead ring. By operating the handle, the container and crosshead can be attached and detached. In comparison, it has the advantage that the work is reliably easy and safe, and there is no need for detailed distance adjustment.

In addition, the lock ring that fixes the container to the container holder of the extrusion brace is split into two parts, one end of which is supported by a pin so that it can be opened and closed, and the other end is connected by a rotatable lock member via a ring mechanism. If a configuration is adopted in which one end of this locking member is rotatably and radially movably attached to a locking member provided on the outer periphery of the container holder, the locking ring can be attached with a bolt or the like as in the conventional method. Since it is not directly fixed to the container holder, the container can be easily attached and detached by simply operating the handle from the outside of the container holder, without the risk of bolt seizure or bolt attachment or detachment.

[Brief explanation of the drawing]

The drawings are for explaining one embodiment of the present invention, and FIG. 1 is a longitudinal sectional view, FIG. 2 is a sectional view taken along the line II-II in FIG. 1, and FIG. 3 is a sectional view taken along the line III-III in FIG. 1. 4 is a left side view of FIG. 1, FIG. 5 is a left side view showing a state in which the lock ring is loosened, and FIG. 6 is a sectional view taken along the line vI-VI of FIG. 5. 1...Container, 2...Container holder, 3...Heater section, 5...Liner,
6...Tsukuring groove, 7...Lock ring, 8...Curved billet, 9...Stem, 10
・・・・・・Cross head, 11・・・Cross head ring, 12・Bending/locking member, 12a・Protrusion between, 12b・・・Round bar part, 13・・Between Locking part, 14
...Large diameter part, 14a, 26...Curved handle,
15... Guide bar, 16. 18. 29・
- Curved feeding hole, 19... Circular hole, 20... Concave portion, 22... Hat tongue mechanism, 23... Lock member, 24... Curved flange part, 27...Locking member.

Claims (1)

[Claims] 1. A locking member with an oval locking portion at the tip is installed in the crosshead ring attached to the tip of the crosshead so that it can rotate and slide freely in the axial direction, and the crosshead ring of the container 1. An extrusion press equipped with a container exchange device, characterized in that a hole is provided in a surface portion that comes into contact with the locking member so that the oval locking portion of the locking member can be locked by rotation.