JPS6110808Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention uses an intermediate frame type indirect extrusion press as a series of processing devices for cutting billet lees after completion of extrusion and discharging the cut lees and pressing plate from the press machine. Shortening cycle time and
This invention relates to a device that is designed to provide a compact and rational arrangement and operation of the entire device, as well as ease of maintenance and management.

Intermediate frame type indirect extrusion presses are often used as press machines for hot extrusion molding of rod-shaped and tubular extruded products from billet materials. There is an intermediate frame that moves forward and backward to hold the die stem during the extrusion process and cutting the pressed lees, and in this type of intermediate frame type,
A shear device is used to cut the pressed lees (discard) of the billet material when the extrusion is completed, and to remove the pressed lees and the pressing plate on the pressure stem side from the press machine. The shear device itself should be installed at a position sufficiently retracted to the outside of the container so that the shear blade can be installed avoiding the container holder so that it does not hit the platen or container holder where the die stem is attached, and A receiving and transferring device such as a disk card loader, which receives the cut lees and the pressing plate on the pressure stem side and discharges it outside the press machine, is movably installed outside the press machine, and can be moved when necessary. It is set up so that it can enter the press center. With such a processing equipment structure, it takes time and effort to enter and exit from the outside of the press machine or container, which hinders shortening press cycle time and improving efficiency. Also, the size of the cylinder that is the driving source for the shearing machine becomes large, which impedes the overall compactness of the shearing device.Also, the lower structure of the press machine becomes complicated due to the receiving and transferring device for the pressed lees and pressing plate, and the cylinder for moving the container becomes difficult to make. There are problems such as unbalanced strain (during extrusion) occurring in the press frame due to unreasonable arrangement.

The present invention was developed to rationally solve these problems, and its feature is that an intermediate frame type indirect extrusion press has a die stem that can move forward and backward in parallel with the press direction. In an intermediate frame that surrounds and moves back and forth in parallel with the press direction and holds the die stem during the extrusion process and cutting the pressed lees, a non-ring shaped A lees cutting device using a shear blade is installed so that it can move forward and backward toward the center of the press from one side, and at the center of the press in the frame, a lees cutting device for the fixed die and a lees cutting device for the lees and the lees cutting device for the loose die are installed at the center of the press. A press lees/press plate receiving and transferring device equipped with a plate chuck structure is installed so as to be movable forward and backward from the center position toward the other side on the horizontal center line, and the cylinder for moving the container in the press machine is moved in the press direction. It is located on the vertical center line perpendicular to the point.

The present invention will be described in detail below based on the illustrated embodiments. Figures 1 to 6 show an embodiment of the present invention for a type having a fixed die integrated with the die stem;
7 to 9 show embodiments of the present invention having a die stem and a separate lubed die, respectively,
Fig. 1 is a longitudinal sectional front view of the main part of the press, Fig. 2 is a sectional view taken along the line A-A in Fig. 1, Figs. The figure shows each cross-sectional view of the state of cutting and transfer to the outside of the machine at the same position as in Fig. 2, and Figures 7, 8, and 9 show cross-sectional views of only the main parts of the loose die type in the state of extrusion, cutting, and transfer to the outside of the machine. However, in FIG. 1, 1 is a platen in an extrusion press, and although it is not shown, a main cylinder frame is arranged on the right side of the figure opposite to the platen 1, and the platen is connected to a column 1.
5 (see FIG. 2) to a cylinder frame (not shown), and is installed on the press bed plate 9. An intermediate frame 2 surrounding the die stem 3 is installed on the front surface of the platen 1 so as to be movable back and forth parallel to the press direction by a moving cylinder 10.
An integrated fixed die 25 is formed at the front end of the die stem 3. Also, platen 1
A container 6 is installed to be movable back and forth in parallel with the press direction by a moving cylinder 4 attached to the die stem 3, and the die stem 3 is attached to the platen 1 side via a die holder 11. Reference numeral 7 denotes a pressurizing stem. Although the pressurizing stem 7 is not shown, it is installed on the main cylinder frame side mentioned above through a crosshead so that it can move forward and backward in the press direction around the center of the press, and is also not shown. The press is driven by the main cylinder of the main cylinder frame, both of which are basic structures known as intermediate frame indirect extrusion presses.

In such an intermediate frame type indirect extrusion press, the present invention includes an intermediate frame 2 which is movable in a straight line along the press direction through the engagement of guides 9a and 2a on the floor plate 9, as shown in the second figure. Inside,
A shear blade 1 that can move forward and backward horizontally in a direction across the press center, that is, in a direction orthogonal to the press direction.
8 and a drive cylinder 12 for moving the shear blade 18 back and forth. The drive cylinder 12 is connected to the intermediate frame 2
As shown in the figure, the shear blade 18 is a band-shaped non-ring blade, connected to the rod 12a of the cylinder 12, and is provided on the intermediate frame 2 and perpendicular to the pressing direction. It moves straight along a pair of upper and lower guide surfaces 19, 19' that are parallel to each other. Corresponding to the pressed lees cutting device 26, a pressed lees/pressing plate receiving and transferring device 13 is also installed in the intermediate frame 2 in a direction perpendicular to the press direction and separately from the cutting device 26 so as to be movable forward and backward. . The device 13 includes a substantially U-shaped frame 27 that is open on the side opposite to the shear blade 18 in the cutting device 26.
, seats 28 and 29 formed on the bottom of the frame 27 and the sides of the U-shaped closed recess, and corresponding to the seats 28 and 29, a pressing plate 20 on the pressing stem 7 side and the pressing lees 21. By connecting the rod 30a of the drive cylinder 30 installed on the upper surface of the intermediate frame 2 to one end of the frame 27, the entire apparatus 13 can be moved in the press direction. It is said to be able to move forward and backward in orthogonal directions,
The frame 27 is slidably engaged with the guide surfaces 19, 19 described above. The chuck mechanism 14 is
A chuck 31 that can be opened and closed to hold the pressed lees 21 and the pressing plate 20, and a cylinder 33 that drives the chucks 31 to open and close separately are provided together with driving members such as a pivot 35 and a link 36.
In the figure, 5 indicates a piston rod of the driving cylinder 4 of the container 6, 8 indicates a container holder, and 37 indicates a mandrel provided in the center of the pressure stem 7 so as to be able to move forward and backward independently. As is known, this is a case where a tubular product is obtained as an extruded product, and whether or not this is the case is irrelevant to the gist of the present invention. Also, in Figure 2,
16 and 17 correspond to the receiving and transferring device 13,
The handling device 16 is a handling device for conveying the pressed lees 21 and the pressing plate 20 transferred to one side of the press machine by the device 13 to the outside of the press machine, and the handling device 16 is located outside the moving side of the receiving and transferring device 13. , an arm 40 rotatably provided via a pivot shaft 38 and a drive cylinder 39 using one side of the floor plate 9, etc.
The handling device 17 consists of a receiving seat 41 rotatably supported at the tip of the arm 40, and a chuck 44 attached to the receiving seat 41 so as to be openable and closable via a pivot shaft 42 and a driving cylinder 43. A transfer arm 4 is rotatably provided toward the handling device 16 via a pivot shaft 46 and a drive cylinder 47 using a beam 45 on which the column 15 is mounted.
8, a handling device 16 receives the pressed lees and a pressing plate on a receiving and transporting device 13, and a handling device 17 transports the cake out of the press.

7 to 9, reference numeral 24 indicates a loose die that is separate from the die stem 3. In the case of the loose die 24, after cutting the pressed lees 21, the loose die 24 can also be carried out by the receiving and transferring device 13. The only difference is that it has been changed, and the contents of the device remain the same.

Processing of the pressed lees and pressing plate after completion of extrusion according to the present invention is carried out as follows.

Figure 3 shows container 6 using mandrel 37.
The billet 22 inside is shown being extruded as a tubular product 23 through a fixed die 25 and a mandrel 37, and this extrusion process involves charging the billet 22 into the container 6, as in conventional presses of this type. The tubular product 23 is successively extruded through the insertion of the fixed die 25 into the container 6, the forward movement of the pressurizing stem 7 of the container 6, and the setting of the mandrel 37 on the die 25. When the extrusion process is thus completed, the process moves on to cutting the pressed lees 21, as shown in FIG.
Upon completion of extrusion, the pressurizing stem 7 mandrel 37 and the container 6 move back, leaving the pressed lees 21 and the press plate 20 connected to the fixed die 25 of the die stem 7.
are both exposed from the container 6, and at the same time, the intermediate stem 2 also moves in the same direction as the container 6 to hold the front end of the die stem 7, and the pressed lees 21 press plate 20
A cutting device 26 and a receiving and transferring device 1 are provided on the intermediate frame 2 while remaining at the press center position in the figure.
It will be located between 3 and 3.

Therefore, as shown in FIGS. 4 and 5, the driving cylinder 12 of the cutting device 26 advances the shear blade 18 in the direction perpendicular to the pressing direction as shown by the arrow in FIG. 4, thereby cutting the pressed lees 21. The cutting of the pressed lees 21 and the discharge of the pressed lees 21 and the pressing board 20 from the press machine are carried out as follows. That is, before cutting, the chuck mechanism 1
The chucks 31 of the pressed lees 21 and the press plate 20 in 4 are engaged with the pressed lees 21 and the press plate 20 by driving the respective cylinders 33, and both 21 and 20 are held firmly between them and the catch seats 28 and 29. After that, the shear blade 18 of the cutting device 26 is directed toward the pressed lees 21 by the cylinder 12, and the amount of pressure applied by the cylinder 12 is applied to the pressing plate 20, which has already been checked, from the shear blade 18.
It is transmitted to the pressed lees 21 and further to the receiving seats 28 and 29,
While pushing the pressed lees/pressing plate receiving and transferring device 13, the pressed lees 21 and the product side are cut into pieces. This state is as shown in FIG.

Therefore, when the cutting is completed by the predetermined stroke of the cylinder 12, the shear blade 18 is moved backward, and the cut-off pressed dregs 21 and the pressing plate 20 are transferred to the chuck mechanism 1.
The entire pressing lees/pressing device 13 that is being checked in step 4 is moved to the right side in FIG. 16 receiving seats 41
As shown in FIG. 6, the pressing board 20 and the pressed lees 21 are placed concentrically in the center of the machine 13, and the chuck by the chuck mechanism 14 is released to receive the pressing board 20 and the pressed lees 21 on the side of the device 13. It is moved to the seat 41 side. That is, here, the chuck 44 of the receiving seat 41 is made to grip the pressing board 20 of the pressed lees 21 via the drive cylinder 43, and the receiving seat 41 is rotated to release the pressed lees 21 and the pressing board 2.
0 to the outside of the press machine, the device 13 is moved back to the press center side, and the entire intermediate frame 2 is moved to the platen side in preparation for the next extrusion.

The embodiment shown in FIGS. 7 to 9 uses a fixed die 25 that is separate from the die stem 3 instead of the fixed die 25 that is formed integrally with the die stem 3 in the embodiment shown in FIGS. 1 to 6. loose dye 2
4 is used, and FIG. 7 shows the state during extrusion. The extrusion process itself is the same as that using the fixed die 25 shown in FIGS. 1 to 6, but the extrusion process shown in FIG. In the illustrated lees cutting process after completion of extrusion, the pressurizing stem 7 of the container 6 and the mandrel 37 are retracted to take the lees 21 and the pressing plate 20 out of the container 6, and the cutting device 26 of the intermediate frame 2 receives the lees. The pressed lees 21 is placed between the transfer devices 13 and the front end of the die stem 3 including the loose die 24 is supported by the intermediate frame 2.
The pressed lees 21 and pressing plate 20 are once moved to the device 13 side via the shear blade 18, but after the shear blade 18 is moved back, the device 13 is advanced to push the pressed lees 21 to the press center. The board 20 is returned, the intermediate frame 2 is moved to the platen 1 side, the loose die 24 at the front end of the die stem 3 is stacked on the pressed lees 21 side, and the die 24 is also held by the chuck 31 of the chuck mechanism 14 of the receiving and transferring device 13. The only difference is that the loose die 24, the pressed lees 21, and the press plate 20 are transported outside the press machine by checking the apparatus 13 and moving the apparatus 13 to the handling apparatus 16 side. In addition, in the case of a fixed die, there are only two pieces, the pressed lees 21 and the pressing plate 20, whereas in the case of a loose die, there are only two pieces, the die 24 and the pressed lees 2.
1. There are three pressing plates 20, and the thickness of both of them is naturally different, but this is because the chuck mechanism 14 in the pressed lees/pressing plate receiving and transferring device 13 has a chuck 31 that presses the lees 21, The liner attached to the contact surface with the pressing plate 20 side can be prepared for both fixed dies and loose dies, and can be replaced as necessary.
Either the chuck itself can be replaced or a chuck type that can be used for both can be used, and these replacements can be carried out very easily by pulling out the device 13 to one side of the press machine.

The pressed lees/pressing plate processing device of the present invention provides the following advantages. That is, by incorporating the pressed lees cutting device 26 and the pressed lees/pressing board receiving and transferring device 13 in the intermediate frame 2, the shear blade 18 and the device 1
3 can be expected near the periphery of the die stem, and the operating stroke of the shear blade 18 in the cutting device 26 and the transfer stroke of the pressed lees/pushing plate outside the machine in the device 13 are both shortened. - This leads to a reduction in the series of work processes such as cutting the press plate and transporting it outside the machine, making the press cycle time significantly more advantageous compared to conventional methods in which this type of device is installed on the container or platen side. In particular, the fact that the operating stroke of the cutting shear blade 18 is short means that its drive cylinder 12 is also downsized, and the receiving and transferring device 13 is also similar.
6 and 33 can be arranged horizontally in the vicinity of the press center as in the illustrated embodiment, making the whole compact, and furthermore, this allows conventional devices of this type to be arranged vertically and vertically. In this case, the cylinders 4 for moving the container 6 can be arranged on the vertical center line passing through the press center, avoiding the disadvantage of arranging them at diagonal positions, which can occur during the extrusion process. Platen distortion is also made uniform. Also, compared to the conventional press machine, which has a shear device vertically above it and disposes a disk card receiver etc. at the bottom, that is, at the bottom of the press machine, the devices 26 and 13 are arranged on the left and right sides of the press machine. This simplifies the vertical structure and facilitates maintenance, and the stroke of the cutting shear blade 18 is only slightly larger than the diameter of the container 6, and the devices 26 and 13 are Since it is placed on standby close to the center of the die stem 3, cutting, gripping, and transferring operations can be started immediately as soon as the container of the pressed lees/pushing plate is exposed after extrusion, which clearly speeds up the operation. At the same time, since the shear blade 18 is of a non-ring type, a number of excellent advantages can be exhibited, such as smooth transfer of the pressed lees and pressing plate to the device 13 side.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional front view of the main part of an intermediate frame type indirect extrusion press, Fig. 2 is a sectional view taken along the line A-A in Fig. 1 of an embodiment of the apparatus of the present invention, and Figs. FIGS. 5 and 6 are cross-sectional views of the device of the present invention in various operating states, and FIGS. 7, 8, and 9 are explanatory diagrams of the extrusion and pressed lees cutting processes using a loose die. 1... Rear platen, 2... Intermediate frame, 3
...Loose die, 4,10...Moving cylinder, 6...Container, 7...Pressure stem, 26...
... Cutting device, 12, 30 ... Drive cylinder, 1
3...Reception transfer device, 14...Chuck mechanism, 1
6, 17... Handling device, 22... Billet, 20... Pressing board, 21... Pressing lees, 24, 25...
…Thailand.

Claims (1)

[Scope of utility model registration request] This is a device for cutting the pressed lees and removing the pressed lees and the pressing plate from the press in an intermediate frame type indirect extrusion press.It surrounds the die stem and is provided so as to be movable in parallel with the press direction. In an intermediate frame that holds a die stem during cutting of pressed lees, a pressed lees cutting device with a non-ring type shear blade is placed on one side of the frame on a horizontal center line perpendicular to the press direction, and is directed from the one side toward the center of the press. The frame is equipped to move forward and backward, and also at the center of the press is a receiving and transferring device for the pressed lees and pressing plate, which is equipped with a chuck structure for the pressing lees and pressing plate in the fixed die and the die, pressing lees and pressing plate in the loose die. , installed so as to be movable forward and backward from the center position toward the other side on the horizontal center line,
An intermediate frame type indirect extrusion press characterized in that a container moving cylinder in the press machine is provided on a vertical center line perpendicular to the press direction.
Pressing plate processing device.