JPS6217122Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to the provision of an indirect extrusion press whose main purpose is to efficiently process disk cards after extrusion by mechanical means, while also making maintenance of the press easy. .

Some indirect extrusion presses for extruding pipe materials, solid materials, etc. have a hydraulic coupling mechanism attached to the crosshead in order to add the force of a container moving cylinder to the extrusion force.

When installing the hydraulic coupling mechanism, there are cases where it is installed on the left and right sides on a horizontal plane, and there are cases where it is attached on the top and bottom on a vertical plane, but when press maintenance, billet insertion, etc. are taken into account, it is normal to mount it on the top and bottom.

However, when the hydraulic coupling mechanisms are installed vertically, they will interfere with the disc card shear mechanism and disc card receiver mechanism that cut the disc card after extrusion, and the interaction with these handling mechanisms will become a problem.

Therefore, in the past, one or both of the hydraulic coupling mechanism and the handling mechanism were sacrificed.

The present invention was devised in view of the actual situation, and in particular, by devising the shape of the container holder that constitutes the container device, the above-mentioned problems of the conventional example are solved. Embodiments of the present invention will be described in detail with reference to the following.

In FIGS. 1 and 2, F indicates an indirect extrusion press, which includes a press platen 1 with a cylindrical die stem 2 attached to the press axis, and a press stem 4 attached to the press axis via a crosshead 3. and a frame 6 equipped with a pushing force generating mechanism 5 for the pressurizing stem 4 are erected on a floor plate 7 facing each other in the front and rear, and the press platen 1 and the frame 6 are arranged diagonally. In the example, they are firmly connected to each other via four columns 8 to form a rigid frame frame structure.

The extrusion force generating mechanism 5 is constructed by fitting a main ram 5B into a main cylinder 5A in an oil-tight manner. A pressurizing stem 4 is detachably attached to the main cylinder 5.
It is configured to generate an extrusion force by applying fluid pressure (hydraulic) to A.

A container device 9 is provided between the press platen 1 and the frame 6, and the container device 9 is connected to a cylindrical container 12 in which a billet storage chamber 11 is formed via a container liner 10. It is mainly composed of a container holder 13 that is fitted over and supports the container 12,
A billet accommodating chamber 11 is coaxially passed through the press shaft back and forth, and a shear ring 14 is attached to the rear end surface.

Furthermore, the container holder 13 of the container device 9 is provided with a container holder show device 1 as shown in FIG.
5 is provided, and is slidable in the front and rear directions on the floor plate 7, and is equipped with a pair of upper and lower hydraulic telescopic container moving cylinder mechanisms 16 that connect the press platen 1 and the container holder 13, so that it can be moved independently. It is composed of

The container holder 13 has openings arranged vertically on the rear end side, specifically, on a vertical plane passing over the press axis in the disk card ejection direction, as shown in detail in FIGS. 3 and 4. Connecting parts 19 and 20, which are U-shaped in plan view and have parts 17 and 18, are formed to project rearward.
9, 20 and the crosshead 13 on the frame 6 side
are connected by hydraulic coupling mechanisms 21 and 22.

That is, the hydraulic coupling mechanisms 21 and 22 are provided one above the other on a vertical plane passing through the press axis, and the details of one of them are shown as a representative.
This is accomplished by fitting the piston ram 24 oil-tightly into the cylinder tube 23 attached to the crosshead 3 and the main cylinder 5A, and connecting the ends of the piston rod 25 to the connecting portions via the screw fastening structure 26. It is configured so that force can be added to the amount of extrusion force.

A disk card shear mechanism 27 and a disk card receiver mechanism 28 are provided, respectively, which are movable forward and backward relative to the press axis through the openings 17 and 18, and in this embodiment, both mechanisms are operated as follows. It is composed of

As shown in FIGS. 1 and 2, the disk card shear mechanism 27 connects a pin 30 to a pair of left and right arms 29 formed on the container holder 13 in a cylinder mechanism 3.
The shear frame 32 is connected by making it freely engageable and detachable at 1, and the shear cylinder 33 and shear rod 34 are assembled to the shear frame 32 via the shear cross head 35, etc., and the shear cylinder 3
A shear blade 36 attached to the lower end of the press 3 is guided in a direction perpendicular to the press axis through an opening 17 by hydraulic action, and is configured to be freely movable forward and backward.

In addition, in the figure, 37 indicates a shear tie rod,
The shear frame 32 is configured to be slidably guided on the upper surface side of the press platen 1.

Next, to explain the disk card receiver mechanism 28, as shown in FIGS. 1 and 2, a pair of left and right rails 39 are laid on both shoulders of the pit 38 in parallel to the extrusion direction. A truck 40 is provided that can travel together with the container device. A receiver frame 41 is placed and fixed on the truck 40, and a receiver driver 42 is provided vertically passing through the truck 40 and the frame 41 as a telescopic hydraulic cylinder in this embodiment, and its piston rod end A bifurcated receiver head 43 is attached thereto, and the receiver head 43 can be moved forward and backward through the opening 18 in a direction perpendicular to the press axis by the extension operation of the driver 42. Note that the receiver head 43 is configured to be able to rise and fall freely around the horizontal axis, and the disk card and press plate received by the head 43 are placed in the second position.
It can be carried out of the press by a pusher cylinder mechanism 44 shown in the figure.

In addition, in the case of the press in the embodiment, a forming part 45 that sets the shape of the extruded material of the die stem 2 is used.
As shown in FIGS. 7 and below, it is an assembled die structure consisting of a clean-out ring 46 that is fitted over the small diameter portion of the die stem 2, a die 47, and the like.

In addition, in FIG. 2, reference numeral 48 indicates a billet loader, and in this embodiment, it has a billet loader 52 operated by a cylinder mechanism 51 at the tip of an arm 50 that is swingable in the left and right directions about a pivot shaft 49. 52, etc., is shown to be movable between the press axis and the outside of the press by a cylinder mechanism 54, and the billet loader 48 is moved back and forth in the press direction by a guide frame 55. It is said to be movable.

Further, 56 indicates a mandrel cleaning mechanism, 57 in FIG. 7 indicates a handling robot for the assembled die structure, and further, in the figure, 58 indicates a pressing plate, 59 indicates a pressed lees, and 60 indicates an extruded product.

Next, with reference to FIGS. 5 to 12, the press
Explain the cycle.

In FIG. 5, with the container device 9 covering the die stem 2, a billet 53 and a press platen 58 are carried into the press axis via a billet loader 48.

Next, by moving the container device 9 in the direction of the arrow in FIG. 6, the billet 53 on the loader 48 is supplied to the billet storage chamber 11 of the container device 9 from the rear.

After housing the billet 53 and attaching the push plate 58 to the tip of the pressurizing stem 2, a so-called loose die consisting of a clean-out ring 46 and a die 47 is moved to the container device 9 by a handling robot 57, as shown in FIG. The molded part 45 is carried into the press axis between the die stem 2 and the die stem 2, and the molding part 45 is attached to the die stem 2, thereby preparing for extrusion.

Therefore, as shown in FIG.
By advancing the crosshead 3 and the pressurizing stem 4 and adding the force of the hydraulic coupling mechanisms 21 and 22 to the pushing force, both the container device 9 and the pressurizing stem 4 are advanced, and the billet 53 is moved forward. is indirectly extruded through the forming section 45, and the extruded product 60 is extruded forward through the die stem 2.

After the extrusion is finished, the extruded product 60 and the pressed lees 59
This is done as follows.

As shown in FIG. 9, by moving the container device 9 in the direction of the arrow, the pressed lees 59 are pulled out in the counter-extrusion direction and the pressure stem 4 is moved backward.

The above-mentioned extraction of the pressed lees 59 is performed in an example in which a disk card (referring to pressed lees) shear mechanism 27 and a disk card receiver mechanism 28 are provided, and the receiver mechanism 28 moves along the rail 39 together with the container device 9. has been done.

Therefore, the receiver head 43 is moved upward in the direction of the arrow through the opening 18 via the driver 42 of the receiver mechanism 28, and the head 43 is moved into the lees 59.
The push platen 58 is advanced from below to support it.

Next, as shown in FIG. 10, the disk shear mechanism 27 is advanced toward the press axis through the opening 17, and the receiver mechanism 28 is retreated, thereby shearing and shearing the extruded product 60. The pressed lees 59 are cut and separated.

After cutting and separating the extruded product 60 and the pressed lees 59 in this way, the shear mechanism 27 is moved backward as shown in FIG. This rotation causes the pressing lees 59 and the pressing plate 5 to be rotated.
8 will be transferred.

Therefore, as shown in FIG.
8 will be carried out of the press by the pusher cylinder 44 via a tray (not shown), etc. On the other hand, the molded part 45 shown as a loose die by advancing the container device 9 will be received by the robot 57 and carried out of the press. The press plate 58 and the molding section 45 are then transported to a processing step such as cleaning for reuse.

In addition, as a means of closing one end of the container,
It can also be applied to a so-called single stem type indirect extrusion press in which a closing block (not shown) is provided in place of the pressurizing stem 4 so as to be slidable in a direction orthogonal to the press axis.

In summary, the present invention includes a press platen 1 having a cylindrical die stem 2 attached to the press axis,
A press stem 4 or a container closing block is provided on the press shaft center via a crosshead 3, and a frame 6 equipped with an ejection force generating mechanism 5 for the press stem 4 is provided facing each other in the front and rear. A container device 9 is disposed between the press platen 1 and the frame 6, and the container device 9 and the pressurizing stem 4 or container closing block are both moved forward to push the billet 53 inside the container device 9 forward. In this type of indirect extrusion press, the container device 9 consists of a container 12 having a billet storage chamber 11 and a container holder 13 that supports the container 12, and the disk card 59 in the billet storage chamber 11 is moved in the opposite extrusion direction. Connecting members 19 and 20, which are U-shaped in plan view, are made to protrude above and below the container holder 13 on the side in which the disk card 59 is removed. A hydraulic coupling mechanism 21, 22 is provided, respectively, which defines a corresponding opening 17, 18 and is connected between the respective connecting member 19, 20 and the crosshead 3 on the side of the frame 6; A pair of left and right arms 29 are erected on the connecting member 19.
The shear frame 32 of the disk card shear mechanism 27 is attached to the shear blade 3 of the shear mechanism 27.
6 is provided within the upper opening 7 to be movable forward and backward relative to the press axis, and a disk card receiver mechanism 28 is provided within the lower opening 18 to be movable forward and backward relative to the press axis. Since it is related to a characteristic indirect extrusion press, it has the following advantages.

After extrusion, the disk card 59 is extracted from the container device 9 in the opposite direction to the extrusion direction, cut and separated by the shear mechanism 27 and receiver mechanism 28, and can be discharged outside the press, reducing press cycle time. and productivity can be improved.

Further, the container holder 13 of the container device 9 is formed with connecting parts 19 and 20 in which vertically corresponding openings 17 and 18 are formed. The hydraulic coupling mechanism 21, 2
2, the strength of the coupling mechanisms 21 and 22 can be added to the amount of extrusion force, and the coupling mechanisms 21 and 22 can be attached above and below, making press maintenance easier.

Furthermore, since the connecting parts (materials) 19 and 20 protruding above and below the container holder 13 are U-shaped in plan view, the passage of the shear blade 36 and the space for the lees to fall are connected to the openings 17 and 20, respectively. 1
8, and the hydraulic coupling mechanism 21,
22 can be transmitted effectively and in a well-balanced manner to the container holder 13, the eccentric load on the container holder 13 can be reduced, and misalignment of the container can be prevented.

Furthermore, the upper connecting member 19 has a pair of left and right arms 29 erected thereon, and the shear frame 32 is attached to the arms 29, so that the structure is simple.

Moreover, even if the hydraulic coupling mechanisms 21 and 22 are installed above and below, the disk card shear mechanism 27 and the disk card receiver mechanism 28 can be freely moved forward and backward relative to the press axis through the openings 17 and 18. As a result, it is of great benefit as it allows mechanically efficient post-processing of parts that require pressing after extrusion.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a side view showing a partial cross section of the entire press configuration, and FIG.
Figure 3 is an enlarged view of the arrow B-B in Figure 1. Figure 4 is an enlarged view of the arrow C-C in Figure 1.
12 are partial cross-sectional side views of essential parts in an operating state showing one cycle of the press. 1...Press platen, 2...Die stem, 3
. . . Crosshead, 4 . . . Pressure stem, 5 . . . Extrusion force generation mechanism, 6 . 18...
Opening part, 19, 20... Connecting part, 2
1, 22... Hydraulic coupling mechanism, 27... Discard shear mechanism, 28... Discard receiver mechanism.

Claims (1)

[Claims for Utility Model Registration] A press platen 1 having a cylindrical die stem 2 attached to the press axis, and a pressurizing stem 4 or container closing block connected to the press axis via a crosshead 3. A frame 6 equipped with a pushing force generating mechanism 5 for the pressure stem 4 is provided facing each other in the front and back, and the press platen 1 and the frame 6
Indirect extrusion of a type in which a container device 9 is disposed between the container device 9 and the pressure stem 4 or the container closing block, and the billet 53 inside the container device 9 is pushed forward by moving the container device 9 and the pressurizing stem 4 or the container closing block forward together. In the press, the container device 9 includes a container 12 having a billet storage chamber 11 and the container 12.
The disc card 59 in the billet storage chamber 11 can be extracted in the counter-extrusion direction, and there are containers above and below the container holder 13 in the direction in which the disc card 59 is extracted in plan view. protruding connecting members 19 and 20 shaped like letters;
The connecting members 19, 20 define vertically corresponding openings 17, 18, and a hydraulic coupling mechanism 21 is connected between the respective connecting members 19, 20 and the crosshead 3 on the side of the frame 6. , 22 are provided respectively,
Further, a pair of left and right arms 29 are erected on the upper connecting member 19, and a shear frame 32 of the disk card shear mechanism 27 is attached to the arms 29.
is installed, and the shear blade 36 of the shear mechanism 27 is provided to be movable forward and backward relative to the press axis within the upper opening 17, and the disk card is movable forward and backward relative to the press axis within the lower opening 18. An indirect extrusion press characterized by being provided with a receiver mechanism 28.