JPS60115320A - Extruding press provided with pushed discard treating device - Google Patents

Abstract

PURPOSE:To move a dummy block to an exact separated position by constituting so that a core of the dummy block coincides automatically with a core of a shear irrespective of a size of a thickness of a discard, even if the thickness of the discard generated at the time of an extraction is irregular. CONSTITUTION:A stop position of a main ram 35 is detected by providing a detector 68 in a moving path of the main ram for extruding a product, and in accordance with a signal generated by said detector, a thickness of a discard 8 is calculated by an operating device and stored. This stored data is compared with a detecting data by a position detector 70 provided on pushers 45, 53 of a separating device 37, by a controller, and a movement of the pushers 45, 53 is controlled.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an extrusion press equipped with a lees processing device for separating lees generated during extrusion from dummy blocks and the like.

[Prior art]

In an extrusion press, a cylindrical or cylindrical billet made of raw material is inserted into the inner hole of a container, and an extrusion stem inserted from one end of the inner hole presses the billet. A continuous or elongated material having a specific cross-sectional shape, such as a shaped material or circular tube, is obtained by extrusion through the hole of a die.

In such a Hiko extrusion operation, lees called discards and lees called shells are generally generated in each cycle of extrusion, and must be removed each time. Figures 1 to 3 are a vertical cross-sectional view of the vicinity of the container and a front view of the discharged pressed lees, which are shown to explain the generation of this type of lees and the method for removing them from the die. I will explain based on. In FIG. 1, a cylindrical billet and a short cylindrical gummy block 2 are installed in the inner hole of a cylindrical container 1 supported on the aircraft side via a container holder (not shown). The billet is pressed and extruded through the die 5 as an extruded product by advancing the extrusion stem 3 into the container 1 using the oil pressure of the main cylinder and pressing the gummy block 2. FIG. 1 shows the state after extrusion. At the front of the container 1 in the extrusion direction, there is a die slide 4.
are provided adjacent to each other so as to be able to reciprocate in the direction shown by arrow A in the figure, and are driven by a hydraulic cylinder (not shown) to reciprocate at a predetermined timing to open either the die 5 or the lees removal hole 6. It is configured to selectively face the container 1 concentrically.

Among these, the die 5 is equipped with an extrusion hole for extruding the pressed billet, and the material extruded from this extrusion hole becomes a long product 7 and is moved by a puller (not shown) in the direction shown by arrow B in Figure 9. It is pulled and transported.

When the extrusion is completed as shown in FIG. 1, the discard 8 remains as the lees left after extrusion due to the relationship between the length and diameter of the product 7 and the billet. A thin cylindrical shell 9 is attached thereto. Then, the container 1 is moved and slightly separated from the die slide 4, and the proximal end of the product 7 is sheared by a shear that moves up and down in this spaced gap.
is moved to bring it into close contact with the die slide 4 again. Next, the extrusion stem 3 is moved back to take out the container 1, and a short, small cylindrical talin-out disk indicated by the reference numeral 10 in FIG. 9 is compressed and buckled. Therefore, after the container 1 is slightly separated from the die slide 4 and the uncut portion of the product left by the shear is removed from the die 5, the die slide 4 is moved so that the mouthpiece 11 of the pressed lees removal hole 6 faces the container 1. and move container 1 to cap 11.
When it is brought into close contact with the surface, the state shown in FIG. 2 is obtained.

In this state, inside the container 1 are a discard 8 formed into a T-shaped cross section by the remains of the compressed billet and the uncut parts from the shear, a gummy block 2, a crushed shell 9, and a clean-out disk. 10 are left crimped and not easily separated. Then, when the extrusion stem 3 is further advanced, the four members 8, 2°9.10 are pressed together and the pressed lees 1 is made into one piece, as shown in FIG.
2 is extruded into the pressed lees removal hole 6 of the die slide 4.

From the pressed lees 12 held by the die slide 4 in this way, it is necessary to separate the gummy block 2 and the talin-out disk 10 for reuse, and the die slide 4 must be separated for the next extrusion cycle. I need to wake up. Therefore, an automated large-scale press or the like is equipped with a separation device for taking out the pressed lees 12 from the die slide 4 and separating it into four members 8, 2, 9, and 10. FIG. 4 is a schematic front view of a separating device shown to explain the operation of separating pressed lees 12 by a conventional separating device of this type. In the figure, between the separating device 13 and the vicinity of the outside position of the die slide 4, there is a separation device that transports the pressed lees 12 extruded from the pressed lees removal hole 6 of the die slide 4 in a direction perpendicular to the paper surface. A conveyor 15 for feeding onto the table 14 of the separating device 13 is provided, and pushers 16 and 17 are provided at both ends of the table 14 of the separating device 13, and pushers 16 and 17 are driven by pressure cylinders and move back and forth in a direction orthogonal to the conveyance direction of the conveyor 15. It is provided. 18 is a stopper that is driven by a pressure cylinder 19 to move up and down, and 20 is a shear that is driven by the pressure cylinder and moves back and forth between the back side of the paper and the front side of the figure.

In such a conventional separation device, first the bush 1 is
7 moves forward in the direction shown by arrow C in the figure and its head 21 reaches the position shown by the chain line 21A, the stopper 18 is lowered to the position shown by the chain line to fully restrict the movement of the bushing 1T. At this time, the pressed lees 12 are conveyed by the conveyor 15 and the table 1
4, the pusher 16 feeds this pressed lees 12 onto the chain line 1
Push it to the position shown by 2A and stop with the tip of the discard 8 in contact with the head 21A. After the discard 8 and the shell 9 are held so as not to move by a holding device (not shown), the shear 20 is advanced to push the gummy block 2 into the chute 22 and collect it. After that, the stopper 18 is raised, and the pusher 16 is moved forward and the pusher 19 is moved back at the same time, leaving the remaining pressed lees 12.
is moved to push out the tallin out disc 10 into the chute 22 at the position of the shear 20, and at the same time, the chute 23
The discard 8 and the shell 9 are dropped inward by their own weight.

However, in such a conventional separation device, since the stopper 18 and its driving device are provided,
Not only is the structure complicated and operation is troublesome, but it is also difficult and troublesome to deal with changes in the thickness of the discard 8. In other words, even if a product of the same standard is extruded using a billet of the same standard as shown in FIG. If the gummy blocks 20 and 20 are stopped at the same position due to the regulation 18, there will be variations in the relationship between the core of the shear 20 and the core of the dummy block 2, resulting in inaccurate or impossible separation of the gummy blocks 2. . However, if the amount of movement of the extrusion stem 3 is restricted in an attempt to keep the thickness of the discard 8 constant, the length of the extruded product will become uneven, which is difficult to implement. In addition, if the thickness of the discard 8 changes due to changes in product specifications, the shim 2 attached to the portrait surface of the stopper 18
4, but this is a very troublesome task and reduces work efficiency, so this is often neglected at the last moment, resulting in the above-mentioned inability to separate.

[Summary of the invention]

The present invention was developed in view of the above points, and a detector is provided in the movement path of the main ram for product extrusion to detect all stop positions of the main ram, and the signals emitted by the detector are used to calculate the thickness using a discard thickness calculation device. By configuring the controller to store all of this information and to control the movement of the button by comparing the stored data with the detection data from the position detector provided on the button of the separating device, the positioning of the button can be determined. With a simple configuration that does not require stopper or spacer adjustment, the gummy block can be automatically moved to the correct separation position regardless of the thickness of the discard. There is something to offer. Embodiments of the present invention will be described in detail below with reference to the drawings.

〔Example〕

5 to 7 show one embodiment of an extrusion press equipped with a pressed lees processing device according to the present invention, FIG. 5 is a schematic plan view thereof, FIG. 6 is a front view of the separating device section, and FIG. The figure also shows a side view of the dummy block separation section. In the figure, an extrusion press 30 includes a cylinder platen 32 and an end platen 33 fixed on a base and connected at four corners by tie rods 31. A main ram 35 is fitted into the main ram 35, which moves forward and backward and has an extrusion stem 3 shown in FIG. 1 at its tip. On the other hand, on the end platen 33 side, a die slide 4 and a container 1 are provided, but since their configuration has been explained in FIGS. 1 to 3, the explanation will be omitted. This will be explained using the same figure. When the die slide 4 moves, the pressed lees 12 in the pressed lees take-out hole 6 is placed at a position corresponding to the outside stop position of the pressed lees take-out hole 6.
A pressure cylinder 36 is provided to push out the pressed lees 12f out of the hole, and a belt conveyor 3 for conveying the pressed lees 12f is provided between the location where the pressed lees 12 is pushed out and the separating device, which is generally designated by the reference numeral 37.
8 is hung.

The separation device 37 includes a base 39 fixed on the floor with legs, and a pair of cylinder frames 40, 41 and a separator frame 42 are integrally fixed to both ends and the center of the base 39, respectively. The conveyance end portion of the belt conveyor 38 is inserted between the cylinder frame 40 and the separator frame 42. Further, a horizontal table 43 is installed from above the belt conveyor 38 to a corresponding location on the separator frame 42 .

Reference numeral 44 denotes a bushing bearing fixed on the cylinder frame 40, on which a bushing 45 is pivotally supported to move forward and backward at will.A first hydraulic cylinder 46 is fixed on the bushing bearing 44 via a bracket 41. has been done. The active end of the first hydraulic cylinder 46 and piston rod 48 is pivotally connected to the negative end of the bushing 45, and as the Vinton rod 48 moves forward and backward with hydraulic pressure, the bushing 45 moves back and forth, and the bushing is fed from the belt conveyor 38 onto the table 43. It is configured to move the pressed lees 12 on a table 43. Also, a bracket 49 fixed on the other cylinder frame 41 is provided with a second hydraulic cylinder! A cylinder 50 is fixedly supported, and the working end of a piston rod 51 and the tip of a guide rod 52 supported movably on a bracket 49 are fixed to a bushing 53, respectively. As the piston rod 51 moves back and forth, the p-button 53 moves back and forth along with the guide rod 52f.

On the separator frame 42, as shown in FIG. It is fixed to Vinton rod 58 of 57. and Vinton rod 5
8 is moved forward and backward, the shear 56 is configured to move forward and backward between the position shown by a solid line in the figure and the position shown by a chain line 56A. 59 is a hydraulic cylinder pivotally supported at the upper end of the bracket 54, and its piston rod 60
The working end of the lever 61 is pivotally connected to the protruding end of the bracket 54, and the working end of the lever 61 is pivotally connected to the protruding end of the bracket 54.
The structure is such that the t/par 6.1 swings as it moves forward and backward. A holder 62 having an arcuate contact surface is integrally formed on the lever 61, and the holder 62 has an arcuate contact surface.
The holder 62 also swings together with the lever 61 that swings as the lever 61 moves forward and backward, and the pressed lees 12 on the table 43 are moved between a pair of plates 63 and 64 that are set up at intervals on the separator frame 42. It is configured to be held in place. Both of the backing plates 63 and 64 face the dummy block 2 of the pressed lees 12 between them, and the interval between them is wide enough to match the thickness of the dummy block 2. ,
The discard 8 and shell 9 of the pressed lees 12 are pressed against the backing plates 63 and 64 by the holders 62, respectively. By doing this, the discard 8 and the shell 9 are held by the holder 62 and the backing plates 63 and 64, and when the shear 56 is fully advanced and retracted, only the dummy block 2 is separated and pushed out. has been done. 65 is a shooter for transferring the extruded dummy blocks 2, and 66 is a conveyor for transporting all discharged dummy blocks to a collection place. In addition, there is no table 43 between the separator frame 42 and the cylinder frame 41, which is open downward, and there are discards 8 and the discards 8 which are pushed out by the pusher 45 and fall after the dummy block 2 is separated. A chute 67 is provided to guide the shell 9 out of the machine.

Extrusion press 30 and separation device 37 configured as above
A control device is provided for controlling the movement of one of the bushings 45, 53 according to the thickness of the discard 8. That is, within the movement path of the main ram 35, the thickness of the discard 8 indicated by the symbol X in FIG. A detector 68 is provided for detecting and emitting a signal, and a calculation device is provided in the control panel of the machine for calculating and storing the thickness of the discard 8 based on the signal emitted by the detector 68. ing. On the other hand, a potentiometer 70 (not shown) as a position detector is connected to the working end of the Vinton rod 48 by a wire 69 at the rear end of the first hydraulic cylinder 46 that advances and retreats the bushing 45 of the separation device 37. It is electrically connected and fixed to a controller, and is configured to control the movement of the bushing 45 based on the thickness data of the discard 8 calculated by the calculation device. Further, below the most retracted position of the other button 53, there is a limit switch γ whose contact is closed to completely stop the button 53 when the button 53 moves to a predetermined position.
1 is supported on the cylinder frame 41 side, and the stop position of the bushing 53 can be set arbitrarily. Further, the rear cylinder frame 40 is provided with a stopper 73 that moves forward and backward into the bushing 45 by the air cylinder 72 and stops the bushing 45 at a position where the tallin-out disk 10 corresponds to the bushing 56.

The operation of the extrusion press and separation device configured as above will be explained. When the die slide 4 is moved to the die position and the die 5 is opposed to the container 1, the billet and dummy block 2 are charged into the container 1, and the non cylinder 34 is fully operated, the main ram 35 advances and the extrusion stem 3 enters the container 1, and the product 7 is extruded from the die 5. The extruded product is pulled with a puller to form product 7.
When the length reaches a predetermined length, the main ram 35 stops, and the donor card 8, the dummy block 2, and the thin cylindrical shell 9 remain in the container 1 as shown in FIG. During this extrusion, the detector 68 detects the stop position tk of the main ram 35 and issues a signal, which is input to the calculation device, where the thickness X of the tee skirt 8 is calculated and stored.

Therefore, after separating the container 1 from the die slide 4 and shearing the proximal end of the product 70 with a shear, the container 1 is brought into close contact with the die slide 4 again, and the extrusion stem 3 is inserted into the container 1.
Take it out and then insert the Heclin Out Disc 10. Then, when the extrusion stem 3 is advanced, the shell 9 is compressed and buckled, so the container 1 and the die slide 4
After pulling out the uncut portion of the product in the shear from the die 5η1 by separating the die from the die 5η1, the whole die slide 4 is moved to face the entire mouthpiece 11 of the pressed lees outlet 6 to the container 1,
By further advancing the extrusion stem 3 with the container 1 in close contact with the mouthpiece 11, pressed lees 12 is formed and extruded into the pressed lees outlet 6 as shown in FIGS. 2 and 3.

Therefore, the Gui slide 4 is moved to the position shown in chain lines in FIG. 5 so that the mouthpiece 11 faces the pressure cylinder 36, and this pushes out the pressed lees 12 onto the belt conveyor 38. Then, as shown by the solid line in FIG. 6, it is supplied onto the table 43 of the separation device [37]. At the same time, the second hydraulic cylinder 50 is actuated, and the bushing 53 moves forward together with the piston rod 51, so that the tip of the bushing 53 is at the position preset by the limit switch 71, and the shear 56 is pushed out as indicated by the symbol P in FIG. The button 53 stops at a position that is closer to the button 45 by, for example, Vo from the core. Next, the first hydraulic cylinder 46 is actuated, the piston rod 4B is moved backward, and the pusher 45 moves forward while fully pushing the pressed lees 12 on the table 43. in this case,
Since the potentiometer 70 is connected to the piston rod 48 by a wire 69, the movement position of the bushing 45 is detected and input to the controller. On the other hand, since the thickness data of the discard 8 calculated by the arithmetic unit is input to the controller, the movement of the bushing 45 is controlled by both input values, and the bushing 45 is stopped at this controlled position.

That is, when the busher 45 moves forward while pushing the pressed lees 12, after the pressed lees 12 comes into contact with the stopped busher 53, the busher 45 continues to move forward while pushing the busher 53 backward, and then stops. In this case, the moving distance of the busher 45 from when the pressed lees 12 comes into contact with the busher 45 to when the busher 53 stops is controlled so that the discard thickness X and dap become y0. As a result, the thickness core of the dummy protrusion 2 and the extrusion core P of the shear 56 match.

At the same time, the hydraulic cylinder 59 shown in FIG. The shear 56 is operated by the cylinder 57.
moves forward, and only the dummy block 2 is separated from the pressed lees 12 and extruded. In this case, the core of gummy block 2 and the shear 5
By matching the cores of 6, the dummy block 2 can be accurately extruded. The extruded dummy blocks 2 are transferred on the chute 65 and discharged onto the conveyor 66, and then conveyed to a collection position and collected.

When the pusher 45 is further advanced after separating the dummy block 2, the groove end of the pusher 45 that is engaged with the stopper 3 comes into contact with the core of the tallin-out disk 10 and the center of the shear 56. The button 45 stops at this position.

Then, the holder 62 and the shear 56 are operated again, and the tallin-out disk 10 is pushed onto the chute 65 and transported and recovered. After this, the stopper 73 is moved by the hydraulic cylinder 72.
When the bushing 45 is moved forward after being moved backward, the remaining discards 8 and shells 9 fall from the end of the table 43 onto the chute 67 and are collected. Busha 45
．． 53 is retracted and returned to the position shown in FIG. 6, thereby completing one extrusion cycle.

In this embodiment, the potentiometer 70 is provided on the first hydraulic cylinder 46 side, and the limit switch 71' is provided on the second hydraulic cylinder 50 side. Potentiometer 7 on the side
0 and the limit switch 71 may be provided on the first hydraulic cylinder 46 side. In this case, the pusher 45 pushes the pressed lees 12 past the core of the shear 56, and then the pusher 53 pushes it back to the normal position. In any of the above cases, it is necessary to make the output of the hydraulic cylinder that pushes the pressed lees 12 larger than the output of the other hydraulic cylinder.

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, in an extrusion press, a detector is provided in the movement path of the main ram for product extrusion to detect the stop position of the main ram, and the thickness of the discard is calculated based on the signal emitted by the detector. By configuring the device to perform calculations and store them, and to control the movement of the bushings by comparing the stored data with the detection data from the position detector provided on the bushings of the separating device, the controller can control extrusion. Even if the thickness of the discard that sometimes occurs is uneven, the core of the dummy block and the core of the shear can be fully automatically matched regardless of the thickness, so the dummy block can always be reliably separated by the shear. separation performance is improved. Furthermore, since there is no need to worry about the thickness of the discard, it is possible to set the product length using a puller that pulls the product out of the die hole, making it easier to control the product length. Furthermore, since there is no need to deal with changes in the thickness of the discard using a complicated stopper device or troublesome shim adjustment as in the past, the structure and operation are significantly simplified.

[Brief explanation of the drawing]

Figures 1 and 2 are longitudinal cross-sectional views of the container and surrounding areas shown to explain the generation of pressed lees and the method for removing them from the die, Figure 3 is a front view of the pressed lees, and Figure 4 is a conventional separation method. The front view of the device, and FIGS. 5 to 7 show an embodiment of an extrusion press equipped with the pressed lees processing device according to the present invention, FIG. 5 is a schematic plan view thereof, and FIG. 6 is a view of the separating device section. The front view and FIG. 7 are side views of the dummy block separating section. 2. e. dummy block, 8. fist discard, 9.
... Shell, 12. Pressing lees, 30.. Extrusion press, 35.. Main ram, 37. Fist.. Separation device, 43.. Table, 45,530 inside.・Button, 681I...Detector, 70-...Potentiometer. Patent applicant Ube Industries Co., Ltd. Agent Masaki Yamakawa (and one other person)

Claims (1)

[Claims] The dregs made of discards and shells generated during extrusion and the dummy blocks interposed between them are received on a table, held between a pair of butchers that can freely move forward and backward from both sides in the axial direction, and all of the dummy blocks are extruded from a direction perpendicular to the axis. In the extrusion press, the lees processing device for separating the pressed lees by using A calculation device is used to calculate the total thickness of the bushing for each cycle of full extrusion, a position detector is installed in the advancing and retracting path of the bushing and detects its entire position, and the detected data by this position detector is combined with the thickness data of the discard. An extrusion press equipped with a pressed lees processing device, characterized in that a controller for controlling the movement of the bushings is provided.