JPS6142647Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an indirect extrusion press, and more specifically, a disk card shear that removes the disk card in the counter-extrusion direction after extrusion and cuts the disk card and the extruded material. This invention relates to an improvement of an indirect extrusion press equipped with a mechanism.

In the extrusion press, an indirect extrusion press equipped with a disc card shear mechanism that cuts the disc card and the extruded material after extrusion is completed is known, for example, as disclosed by the present applicant in Japanese Utility Model Application Publication No. 54-62538. be.

This conventional indirect extrusion press cuts the extruded material and the disk card in the opposite direction of extrusion, so that the press cycle time can be shortened.

In addition, since the disc card shear mechanism is not attached to the container but to a separate member, it is not as strong as the one attached to the container, which has weak points in terms of strength.
Press alignment is less likely to be disrupted by shear reaction force.

It has many advantages, and has achieved some results.

However, in the conventional example, there is a risk that the alignment of the die stem may be lost due to the shear force, and therefore, whether it is a single-action press or a double-action press, the accuracy of the extruded product may be adversely affected.

Furthermore, when a loose die or a seal ring is attached, which allows scalping of the inner surface of the container to be carried out using an extrusion process, handling and maintenance thereof becomes difficult.

There is still room for improvement.

Therefore, the present invention was devised in order to eliminate the disadvantages of the conventional example while maintaining the advantages thereof.Hereinafter, some embodiments of the present invention will be described in detail with reference to the drawings. Describe.

1 to 12 show a single-acting indirect extrusion press as a first embodiment of the present invention.

The structure will be explained with reference to FIGS. 1 to 3, and then the press cycle will be explained.

1 to 3, 1 is a press platen, 2 is a frame having an extrusion force generation mechanism 3, and the press platen 1 and the frame 2 are arranged facing each other at intervals in the front and back, and in this example, there are four columns 4 are arranged diagonally and are rigidly connected via the columns 4.

The extrusion force generating mechanism 3 is mainly composed of a main cylinder 5 and a main ram 6 that is oil-tightly fitted into the main cylinder 5.

A die stem 1A is fixed to the press platen 1 at the press center, and a container 7 and a crosshead 8 are arranged between the press platen 1 and the frame 2, and the container 7 and the crosshead 8 are both movable. An indirect extrusion press 10 is constructed in which a billet 9 is extruded. In such an indirect extrusion press 10, a movable frame 11 is disposed between the container 7 and the frame 2, in this example integrally with the crosshead 8, and the movable frame 11 has a press axis and a press axis on the press platen 1 side. A shear guide portion 12 is formed in a perpendicular direction, in this embodiment, a horizontal plane direction.

Reference numeral 13 denotes a disk card shear mechanism, a cylinder 14 of which is attached to the movable frame 11, and includes a shear 15 that can freely slide along the shear guide section 12 by the expansion and contraction movement of the cylinder 14. There is.

The shear 15 of this example includes a container end block 16 and a through hole 17 spaced apart from each other in the sliding direction.
are respectively movable and fixable between two positions between the press axis and the outside of the press.

Reference numeral 18 denotes a head block mechanism, and in this embodiment, a clamper 22 is provided on a guide frame 20 having a guide portion 19 along the press axis direction, which is slidable by a cylinder 21 outside the press and in a direction perpendicular to the press axis. The clamper 22 is slidable along the shear guide section 12.

The headblock mechanism 18 is a handling manipulator, and a clean-out ring 23 and a die 24 can be attached to the clamper 22 in this embodiment.

Additionally, in the figure, reference numeral 25 denotes a base, which has a container sliding guide section 26 and a crosshead sliding guide section 27, respectively.

28 is a billet pusher, which is built into the crosshead 8 in this example. 29 is a day card ejector, and 30 is a billet loader.

Reference numeral 31 designates a pair of upper and lower clamper mechanisms, which are provided above and below the shear guide section 12. When the clamper 22 of the head block mechanism 18 is advanced toward the press axis, a clamper mechanism 31 is formed at the head section of the clamper 22. The engagement groove 32 can be engaged with the engagement groove 32 .

Reference numeral 33 denotes lateral vibration prevention protrusions formed vertically on a vertical plane passing through the press axis of the shear guide section 12, and grooves 34 formed on the end surface of the container 7 are engaged with and disengaged from the protrusions 33, respectively.

Next, the operation of the first embodiment will be explained.

Figure 1 shows the supply state of billet 9.
The container 7 is placed over the die stem 1A,
The disk card shear mechanism 13 is in a retracted position and its through hole 17 is aligned with the press axis.

Thus, the billet 9 is fed via the loader 30 onto the press axis between the container 7 and the crosshead 8.

The supplied billet 9 is moved by the movement of the container 7 in the direction of the arrow and the billet pusher 28 as shown in FIG.
is inserted into the container 7 through the expansion of the .

After the pillar 9 is housed in the container 7, the cylinder 21 of the headblock mechanism 18 is extended to advance the cleanout ring 23 and the die 24 mounted on the bifurcated clamper 22 to the press axis as shown by the arrow in FIG. 5, and the headblock mechanism 18 is moved to the press platen 1 side to move the cleanout ring 23 and the die 24 to the press axis as shown by the arrow in FIG.
4 is attached to the die system 1A, and the cylinder 14 of the disc card shear mechanism 13 is extended to slide the shear 15 along the shear guide portion 12, thereby aligning the container end block 16 with the center of the press axis.

As a result, the clamper 22 of the head block mechanism 18 is retracted out of the press, and the groove 34 formed on the end surface of the container 7 and the shear guide section 12 are
The billet 9 inside the container 7 is moved by aligning the protrusions 33 formed in the container 7 and moving the container 7 and the crosshead 8 together as shown in FIG. 6 while restricting the horizontal swing of the container 7. The extruded material 9A is molded through the die 24, and during this extrusion process, the clean-out ring 23
The inner surface of the container 7 is cleaned by this.

When the predetermined extrusion is completed, as shown in FIG. 7, the crosshead 8 is once retracted to unblock the container end block 16, and the cylinder 14 of the disk shear mechanism 13 is retracted to remove the container end block 16 from the press. At the same time, the through hole 17 of the shear 15 is aligned with the press axis.

As shown in FIG. 8, by moving forward (to the left in the figure) the disk card shear mechanism 13 attached to the movable frame 11 together with the crosshead 8, the disk card 9B is moved into the container along with the clean-out ring 23 and die 24. 7 in the opposite press direction (to the right in the figure), the clamper 22 of the head block mechanism 18 is advanced toward the press axis via the shear guide 12, and the clamper 22 separates the clean-out ring 23 and the die 24, respectively. After clamping, the disk card 9B is housed in the through hole 17. Details of this state are illustrated in FIGS. 9 and 10, respectively.

In this state, the clamper 22 has an engaging groove 32 formed on its outer periphery on the shear guide section 12 side,
That is, the clamper mechanism 31 provided on the fixed side is engaged, and the clamper 22 of the headblock mechanism 18 is fixed therein without interfering with the die stem 1A.

Therefore, by extending the cylinder 14 of the disk card shear mechanism 13 and sliding the shear 15 along the shear guide section 12, the eleventh
As shown in the figure, the disk card 9B is housed in the through hole 17 and then cut.

During this cutting, the clamper 22 of the headblock mechanism 18 is securely fixed by the shear guide section 12 clamp mechanism 31, and there is no interference with the die stem 1A, and the shear 15 is accurately slidably guided along the guide section 12. , here, container 7
And a large shear reaction force is prevented from being propagated to the die stem 1A.

When the extruded material 9A and the disk card 9B are cut, the disk card 9B is taken out from the through hole 17 via the ejector 29 as shown in FIG. It is taken out of the press by moving to the right as indicated by the arrow and moving backward as indicated by the arrow.

Referring to FIGS. 13 to 23, the second embodiment of the present invention
The embodiment will be described in detail as a double-acting indirect extrusion press.

Incidentally, in the second embodiment, members common to those in the first embodiment are denoted by common reference numerals, and the differences will be mainly explained below.

The movable frame 11 to which the disk card shear mechanism 13 is attached is the crosshead 8 in this embodiment.
The movable frame 11 is provided as a separate body between the container 7 and the frame 2 so as to be movable together and independently, and a fitting portion 11A for the crosshead 8 is formed in the movable frame 11.

A cylindrical pressure stem 35 is connected to the crosshead 8 on the press axis, and a mandrel cylinder mechanism 36 is installed in the main ram 6 of the extrusion force generation mechanism 3.
is built-in.

A tail rod 37 is connected to the mandrel cylinder mechanism 36, and a mandrel locking mechanism 38 is detachably provided to the tail rod 37. Further, a mandrel 40 is attached to the mandrel cylinder mechanism 36 via a mandrel holder 39, and the mandrel 40 is attached to the pressurizing stem 35.
It is inserted inside. Furthermore, in addition to the through hole 17, the shear 15 is formed with a through hole 17A into which the pressure stem 35 is inserted, and the billet loader 30 is attached via a connecting metal fitting 41 provided on the side of the container 7. Here, the billet loader 30 is movable together with the container 7.

In this second embodiment, as shown in FIG. 13, after the billet 9 is supplied between the die stem 1A and the pressure stem 35, the container 7 is moved in the direction of the arrow in FIG. 15, whereby the billet 9 is inserted into the container 7.

After the billet 9 is inserted into the container 7, the billet loader 30 is loaded as shown in FIG.
At the same time, the head block mechanism 18
into the press axis, positioning the clamper 22 between the die stem 1A and the container 7,
The clean-out ring 23 and die 24 are aligned with the press axis. Then, the clean-out ring 23 and the die 24 are connected to the die stem 1 by moving the head block mechanism 18 to the left in the figure.
After the container 7 is moved forward as shown in FIG. 17, the pressing plate 42 is attached to the tip of the pressure stem 35 via the loader 42A.

From this state, the mandrel cylinder mechanism 36 is advanced and the billet 9 is moved forward by the mandrel 40.
At the same time, with the mandrel tip facing the die hole of the die 24 and the mandrel locking mechanism 38 fixing the mandrel 40, an extrusion force is applied as shown in FIG. The extruded material 9A is indirectly extruded.

After the end of extrusion, the pressure stem 35 and mandrel 40 are moved back as shown in FIG. , move the shear 15 to its guide portion 12
The through hole 17 is made to align with the press axis by sliding it through the press.

In order to advance both the movable frame 11 and the container 7 from this state, the disk card 9B is extracted from the container 7 along with the clean-out ring 23 and the die 24 in the opposite direction of the press, and the clamper 22 of the head block mechanism 18 is used to remove the clean-out ring 23 from the container 7. and the die 24, and the die card 9B and the pressing plate 41 are housed in the through hole 17 as shown in FIG.

Then, as in the first embodiment, the clamper 22
When the cylinder 14 of the disc card shear mechanism 13 is extended in a fixed state, the extruded material 9A and the disc card 9B are cut.After cutting, the movable frame 11 is retreated as shown in FIG. As shown in FIG. 23, the disk card 9B and the press plate 41 are removed by the ejector 29.

24 to 2 show a third embodiment of the present invention, which is applied to a double-acting indirect extrusion press, and the basic configuration is the same as the second embodiment.

The only difference is that the pressurizing stem 35 is surrounded by a cutting hole 17 formed in the shear 15, and the rest of the configuration is the same as that of the second embodiment, so there are no common parts. are indicated by common symbols.

30 to 32 show a fourth embodiment of the present invention, which is basically the same as the second embodiment described above, with the only difference being a presser plate 41 attached to the tip of the pressure stem 35. This structure has a fixed stem structure, and therefore, other common parts are indicated by common numerals.

In summary, in the present invention, a press platen 1 and a frame 2 having an extrusion force generation mechanism 3 are disposed facing each other at an interval in the front and back, a die stem 1A is fixed to the press platen 1 side, and the press platen 1 and the frame In an indirect extrusion press 10, a container 7 and a crosshead 8 are arranged between the two, and the container 7 and the crosshead 8 are moved together to extrude the billet 9 inside the container 7.
Crosshead 8 between container 7 and frame 2
A movable frame 11 that is integral with or separate from the movable frame 11 is disposed, and a shear guide portion 12 in a direction perpendicular to the press axis is disposed on the press platen 1 side of the movable frame 11.
Discard shear mechanism 1 having a shear 15 which is provided with and is slidable along the shear guide portion 12.
3 is attached to the movable frame 11, and is further provided with a head block mechanism 18 that is slidable in a direction perpendicular to the press axis between the outside of the press and the press axis via the shear guide part 12, and With the movable frame 11 in contact with the end surface of the container 7, the shear 15 of the disk card shear mechanism 13
Since the present invention relates to an indirect extrusion press characterized in that the disk card 9B and the extruded material 9A can be cut via the head block mechanism 18, the following advantages are provided.

Since the disk card shear mechanism 13 that cuts the extruded material 9A and the disk card 9B is attached to the movable frame 11, which is either integrated with the crosshead 8 or separate from the crosshead 8, rather than the container 7, which has a weak point, the shear Press alignment can be prevented from being distorted due to reaction force.

The movable frame 11 is provided with a guide portion 12 for a shear 15 on the press platen 1 side,
A shear 15 that is slidable on the guide portion 12 and a headblock mechanism 1 that is also slidable on the guide portion 12.
8 to cut the disk card 9B and the extruded material 9A, it is possible to prevent the shear reaction force from acting on the die stem 1A as much as possible, thereby preventing damage to the press alignment, and the so-called head block mechanism 18 is Along with the fixed blade function of the shear,
The pressed parts, in this example, can also have the handling function of the die assembly, so they have multifunctional performance, and can be expected to shorten the press cycle and simplify the structure, and their practicality is significant. It's large.

[Brief explanation of the drawing]

The drawings show an embodiment of the invention, and are shown in FIGS.
Fig. 2 shows the first embodiment, Fig. 1 is a sectional view when billet is supplied, Fig. 2 is a sectional view taken along the arrow A-A in Fig. 1, and Fig. 3 is a sectional view taken along the arrow B-B in Fig. 1. 4 is a sectional view when the billet is inserted, FIG. 5 is a sectional view showing the installation of the die, clean out ring, etc., FIG. 6 is a sectional view during extrusion, and FIG. 7 is a sectional view after extrusion is completed. , FIG. 8 is a sectional view when the disk card is ejected, FIG. 9 is an enlarged vertical sectional view of the main part of FIG. 8, FIG. 10 is an enlarged horizontal sectional view of the main part of FIG. 8, and FIG.
The figure is a cross-sectional view when the disk card is cut, Figure 12 is a cross-sectional view when the disk card is ejected, and Figures 13 to 23 are
The figures show a second embodiment of the present invention, Fig. 13 is a sectional view during billet supply, and Fig. 14 is a cross-sectional view taken from Fig. 13 C-C.
Figure 15 is a cross-sectional view when the billet is inserted, Figure 16 is a cross-sectional view when the die/clean out ring is installed, Figure 17 is a cross-sectional view when the press plate is installed, and Figure 18 is a cross-sectional view when the billet is inserted.
The figure shows a cross-sectional view of the billet upset during piercing, Figure 19 is a cross-sectional view during extrusion, Figure 20 is a cross-sectional view after extrusion, Figure 21 is a cross-sectional view showing the removal of the disk card container, Figure 22 is a cross-sectional view when the disk card is cut, Figure 23 is a cross-sectional view when the disk card is ejected, and Figures 24 to 29 are the third embodiment of the present invention.
Examples are shown, FIG. 24 is a sectional view showing the initial position, FIG. 25 is a sectional view showing the state during extrusion,
FIG. 26 is a cross-sectional view after extrusion is completed, FIG. 27 is a cross-sectional view showing how the disk card is removed from the container, FIG. 28 is a cross-sectional view when the disk card is cut, and FIG. 29 is a cross-sectional view when the disk card is ejected. 30 to 32 show a fourth embodiment of the present invention, FIG. 30 is a cross-sectional view after extrusion is completed, FIG. 31 is a cross-sectional view showing the removal of the disk card from the container, and FIG. 32 is a cross-sectional view showing the disk card being removed from the container. It is a sectional view at the time of cutting. 1...Press platen, 2...Frame, 3...
... Extrusion force generation mechanism, 7 ... Container, 9 ... Billet, 11 ... Movable frame, 12 ... Shear guide section, 13 ... Discard shear mechanism, 15
...Shear, 18...Headblock mechanism.

Claims (1)

[Scope of utility model registration request] A press platen 1 and a frame 2 having an extrusion force generation mechanism 3 are disposed facing each other with an interval in front and back, and a die stem 1A is disposed on the press platen 1 side.
In an indirect extrusion press 10, a container 7 and a crosshead 8 are arranged between a press platen 1 and a frame 2, and a billet 9 in the container 7 is extruded by moving both the container 7 and the crosshead 8. 7 and frame 2
A movable frame 11 that is integrated with or separate from the crosshead 8 is disposed between the movable frame 1 and the crosshead 8.
A shear guide part 12 is provided on the side of the press platen 1 in a direction perpendicular to the press axis, and a disk card shear mechanism 13 having a shear 15 that is slidable along the shear guide part 12 is connected to the movable frame 11.
The shear guide section 1 is attached to the shear guide section 1.
A head block mechanism 18 is provided between the outside of the press and the press axis via the press shaft 2, and is slidable in a direction perpendicular to the press axis. An indirect extrusion press characterized in that the disk card 9B and the extruded material 9A can be cut via the shear 15 of the mechanism 13 and the head block mechanism 18.