JPH0798214B2 - Extrusion press container changer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is a product in which a billet held in an inner hole of a container body fitted with an inner hole of a container holder is extruded from an hole of a die by pushing with an extruding stem. The present invention relates to a container exchanging device of an extruding press for exchanging a container body when the size of a billet is changed in the extruding press for obtaining.

[Conventional technology]

An extrusion press of this type is conventionally generally configured as follows. That is, the extrusion press includes a crosshead that is driven by the main ram to advance and retreat in the axial direction, and an extrusion stem that is concentric with the crosshead and that moves forward and backward integrally with the crosshead. A loose dummy is attached to the tip. On the other hand, on the concentric direction of advance of the extrusion stem, a die having an extrusion hole is provided fixed to the machine base side, and on the extrusion stem side of this die,
A container formed of a container holder and a container body fitted in the inner hole of the container holder so as to be freely inserted and removed is supported on the machine base side adjacent to the die. A billet loader equipped with a swingable arm is provided between the container and the extrusion stem, and, for example, a cylindrical billet held at its tip end by swinging the arm is moved from the outside position to the container. It is configured to supply to a concentric position.

With this configuration, the billet loader is moved to the concentric position with the container, then the billet loader is retracted out of the machine, and the extrusion stem is moved forward integrally with the crosshead. Enter the inner hole of the container body, and when the extrusion stem is further advanced, the billet is extruded through the extrusion hole of the die to obtain the product.

If the size and shape of the billet is changed, connect the crosshead and the container body with a wire, etc., and retract the crosshead to pull it out from the container holder. From the wire on the crosshead side to the wire on the crane side,
When the wire of the crane is wound, the container body is pulled out from the container holder and suspended by the crane. The suspended container body is either taken out of the machine as it is, or it is carried by a crane that has been previously carried by a crane and placed on a trolley waiting on the floor. after this,
A new container body is installed in the container holder by the operation reverse to the above.

In addition, the above described the direct type extrusion press in which the container does not move at the time of extrusion, but in the indirect type extrusion press in which the container holding this is moved together with the movement of the billet for extrusion, the container body The exchange operation is performed according to the above.

[Problems to be Solved by the Invention]

As described above, in the conventional container exchanging device for an extrusion press, it is necessary to connect the container body and the crosshead with a wire each time the container body is exchanged, or to hang or wholesale the container body or the trolley with a crane. However, there is a problem that the work is troublesome and takes a long time, the preparation time is extended, and the productivity is reduced. Further, since the replacement work takes a long time, the container that has been preheated to a certain extent is cooled, and it takes a longer time to heat the container.

The present invention has been made in view of the above points, and an object of the present invention is to provide a container exchanging device for an extrusion press that enables easy container exchanging work in a short time.

[Means for Solving the Problems]

In order to achieve such an object, according to the present invention, a bogie that advances and retreats in the billet pushing direction is supported on the machine base side, and a first connecting device that detachably connects the bogie and the crosshead, and a bogie. A second connecting device for detachably connecting the container holder and the container holder, and a third connecting device for detachably connecting the crosshead and the container body are provided.

[Work]

When replacing the container, when the container is fixed at the forward limit position, move the crosshead forward with the dolly connected to the crosshead, connect the dolly and container holder, and After releasing the fixation between the main body and the carriage and the crosshead, and then retracting the crosshead, the container body is pulled out onto the dolly. Exchange. Next, when the push-out stem is moved forward, the container body is inserted into the container holder, so that the push-back stem is moved backward after the carriage is fixed to the crosshead and put in the retracted state.

〔Example〕

1 to 5 show an embodiment of a container exchanging device for an extrusion press according to the present invention. FIG. 1 is a schematic front view of an essential portion of an extrusion press for carrying out this, and FIG. 2 is a container with a crosshead. A transverse cross-sectional view of the container shown in the state of being brought close to each other and showing the right half part and the left half part of the figure in different breaking positions,
FIG. 3 is a side view of the vicinity of the carriage, FIG. 4 is a side view of the vicinity of the carriage seen from the paper spine side of FIG. 3, and FIG. 5 is a front view of the entire extrusion press. As shown in FIG. 5, the extrusion press 1 is equipped with a cylinder platen 3 and an end platen 4 which are erected on the bed 2 so as to face each other.
Are connected at their four corners by tie rods 5. A main ram 6 as a drive device is fixed to the cylinder platen 3, and an extrusion stem 8 having a loose dummy 7 attached to its tip is connected to the main ram 6 via a crosshead 9. The extrusion stem 8 and the crosshead 9 are configured to be driven by the main ram 6 and integrally move back and forth in the axial direction.

On the other hand, the die slide 10 attached to the end platen 4
A die stem 11 is fixed to the inner hole 10a of the die stem, and a hole 11a is provided so as to penetrate the shaft center portion of the die stem 11, and an extrusion hole is provided at a position adjacent to the rear end of the die stem 11. A die 12 having 12a is fitted and fixed. Dice 1
At a position adjacent to the rear end of 2, a container 13 which is moved forward and backward in the axial direction by a cylinder (not shown) is arranged, and the container 13 has a container holder 13 supported by the cylinder.
a and the container body 13b that is fitted into its inner hole so that it can be inserted and removed freely
It is formed by. Further, the container main body 13b includes a container tire 13c that fits into the inner hole of the container holder 13a,
Container liner 1 with inner hole fitted to container tire 13c
Formed with 3d. Reference numeral 14 is a heater housed in the hollow portion of the container holder 13a. Reference numeral 15 denotes a cylindrical billet as an extruded material, which is supported by a free end portion of an arm 17 provided in the billet loader 16, and the free end portion of the arm 17 is moved in an arcuate locus by the rotation of the arm 17. And billet 15
Is configured so as to be conveyed from the outside position to a position coaxial with the axis of the container 13. Then, after the billet 15 is conveyed to a position coaxial with the axis of the container 13, the main ram 6
When the extruding stem 8 is driven forward by the motor, the billet 15 is inserted into the inner hole of the container body 13b, then compressed by the extruding stem 8, and the billet 15 is extruded from the extruding hole 12a of the die 12 to the die stem 11b.
The product 18 is extruded into the hole 11a. Reference numeral 19 denotes a shear lifting cylinder fixed to the end platen 4 side, and a shear (not shown) is fixed to the piston rod of the shear lifting cylinder, and the extrusion lees are sheared by moving the piston rod up and down. Has been done.

Next, the container exchanging device will be described. 20 as a whole
The dolly indicated by is the undercarriage 21 which is frame-formed in a rectangular shape in plan view.
And wheels 22 provided at the four corners thereof, and on the upper surface of the corner stay 23 that covers the lower tie rod 5, two wheels for rolling the wheels 20 to move the carriage 20 are provided. A rail 24 is laid so as to extend in the extrusion direction of the billet 15 from below the crosshead 9 in the retracted position. Further, a first connecting device is provided between the carriage 20 and the crosshead 9 so as to detachably connect them. That is, in the pin hole of the pin receiver 25 provided at one corner of the chassis 21, a pin 28 with a handle 27 supported movably up and down via a bracket 26 at the front end of the side surface of the crosshead 9 can be inserted and removed. The carriage 20 is inserted and fixed to the crosshead 9 and the carriage 20 stored therebelow, and the carriage 20 is configured to be movable by gripping the handle 27 and pulling out the pin 28 from the pin hole. There is.

Further, a second connecting device is provided between the carriage 20 and the container holder 13a so as to detachably connect them. That is, a pair of left and right fixed pins 30 with a handle 29 are pivotally supported by a bearing formed on the carriage 20 so as to be rotatable and movable back and forth in the axial direction, and an oval-shaped head 30a formed at one end thereof is , The oval hole 31a provided in the bearing 31 on the container holder 13a side is engaged, and the carriage 20 and the container holder 13a are separated by gripping the handle 29 and rotating and moving the fixing pin 30 forward and backward. It is configured such that it is fixed, or the fixing pin 30 is removed so that the fixing is released. Further, a third connecting device is provided between the crosshead 9 and the container body 13b so as to detachably connect them. That is, the hook 32 is projected on the front end surface of the crosshead 9, and
The end surface of 13b is provided with a hole 33 into which the hook 32 is detachably engaged. By doing this, the hook 32
When the crosshead 9 is retracted after engaging with the hole 33 and the hole 33, the container body 13b is pulled out from the container holder 13a and mounted on the carriage 20.

Reference numeral 34 is a pair of left and right positioning screws with handles 34a screwed into the female thread member 35 on the trolley 20 side, and a metal fitting 3 in which an inclined surface is attached to the week surface of the container body 13b at the tip thereof.
6 is formed so that the container body 13b mounted on the carriage 20 is centered and positioned with respect to the container holder 13a by gripping the handle 34a and rotating the positioning screw 34. It is configured. Also, at the end of the container body 13b on the side of the die stem 11, the container body 1
A lock ring 38 having a key guide 38a that engages with the key 37 on the peripheral surface of 3b is fixed and fitted to the container holder 13a, and the container body 13 housed in the container holder 13a is fixed by turning it off. Is configured to. 39
Is a hanging fitting that is screwed into the screw hole of the container holder 13a when hanging by a crane.

The operation of the extrusion press configured as above will be described.
The billet 15 is rotated by rotating the arm 17 of the billet loader 16 while the container 13 is fixed at the forward limit position.
When is conveyed to the concentric position with the container 13, the cross head 9 and the extrusion stem 8 are integrally advanced by being driven by the main ram 6, and the billet 15 is pushed by the extrusion stem 8 and the container body 13b Since the billet 15 is retracted to the position outside the machine and the extrusion stem 8 is further advanced, the billet 15 is compressed by the extrusion stem 8 from the extrusion hole 12a of the die 12 to the die stem 11.
The product 18 is extruded into the hole 11a. When the extrusion is completed, the discard as an extrusion cake is driven by the shear cylinder 19 and sheared by the shear that descends.

Therefore, the replacement work of the container will be described. First, if the loose dummy 7 is attached to the tip of the extrusion stem 8 and the extrusion stem 8 is inserted into the inner hole of the container body 13b, the inner hole is easily damaged. Therefore, after removing the dummy block 7, The container 13 is retracted to the retractable limit position where workability is good, and the thermocouple and die 12 mounted on the container tire 15c
While removing the heater wiring, air cooling pipes, etc. on the side end face part, move the crosshead 9 forward to slightly push the container body 13b, widen the gap between the container holder 13a and the lock ring 38, and easily remove the lock ring 38. And then remove it, container holder 13a and container body 13b
The connection with is released.

Next, after moving the container 13 to the front end of the forward direction shown by the solid line in FIG. 1, when the crosshead 7 is moved forward to engage the hook 32 with the hole 33 of the container holder 13a,
The crosshead 7 and the container holder 13a are fixed.
Therefore, by grasping the handle 27 and pulling out the pin 28 from the pin hole of the pin receiver 25, the connection between the carriage 20 and the crosshead 9 is released. Also, hold the handle 29 to secure the fixing pin 30.
2 is moved to the container 13 side in FIG. 2 and then is rotated, the dolly 20 and the container 13 are connected by the action of the oval head 30a and the oval hole 31a. Therefore, when the extrusion stem 8 is retracted, the container holder 13a and the carriage 20 remain and do not move, and the container body 13b is pulled out from the container holder 13a to the position shown by the chain line 13A in FIG. It will be installed. At this time, since the metal fitting 26 is slightly retracted and its inclined surface is not in contact with the lower surface of the container body 13b,
The container body 13b can be pulled out without trouble.

Therefore, the hanging metal fitting 39 is attached to the container body 13b, and a crane or a wire is hooked on the container main body 13b to wind it up, and the handle 34 of the carriage 20 is rotated to operate the metal fitting 36.
When is moved until it hits a previously adjusted stopper, the container body 13b is floated by, for example, about 1 mm, so that the container body 13b can be reliably placed on the carriage 20 and the key 37 can be easily removed.

Then, the handle 29 is operated to release the engagement between the fixing pin 30 and the bearing 31 and the fixation between the carriage 20 and the container holder 13a, and then the crosshead 9 is retracted, whereby the carriage 20 and the container body 13b are separated from each other. Retreat together. Container body 1
When the handle 28 is gripped and the pin 28 is pulled out from the hole of the pin receiver 25 while the 3b is completely removed from the container holder 13a, the crosshead 9 and the carriage 20 are unfixed. After retracting to the position, the container body 13b is hung by a crane and transported outside the machine.

When installing a new container body 13b, position the container holder 13a in front of the forward limit, and
After being positioned at the backward limit, the container body 13b is transported by a crane, and the key 37 and the key guide 38a are put together and placed on the carriage 20. Then, the crosshead 9 is moved until its tip end comes into contact with the container body 13b, the crosshead 9 is further moved, and then the wire of the crane is removed. Then, the crosshead 9 is moved little by little to insert the container body 13b into the inner hole of the container holder 13a, and the hanging metal fitting 39 is removed at a position halfway inserted. Next, the crosshead 9 is further advanced to completely insert the container body 13b into the inner hole of the container holder 13a, and then the pin 2
Insert 8 into the hole of pin receiver 25 and crosshead 9 and trolley 20
The container replacement work is completed by fixing and reassembling and reconnecting the wiring pipes and the like.

Although the present invention has been shown as an example in which the present invention is applied to a direct extrusion press in the present embodiment, it can also be applied to an indirect extrusion press in which extrusion is performed while moving the container at the same time as moving the billet. , The same effect can be obtained.

〔The invention's effect〕

As is apparent from the above description, according to the present invention, in the container exchanging device for the extrusion press, the bogie that moves forward and backward in the extrusion direction of the billet is supported on the machine base side, and the bogie and the crosshead are detachably connected. A first coupling device,
By providing the second connecting device for detachably connecting the truck and the container holder and the third connecting device for detachably connecting the crosshead and the container body, the truck is crossheaded during the extrusion operation. Since it is not necessary to transport the trolley to the side of the machine with a crane when changing the container, the preparation time can be greatly shortened, productivity can be improved and labor can be reduced. The temperature drop of the preheated container body is reduced, the heating time after replacement is shortened, and the productivity is further improved.

[Brief description of drawings]

1 to 5 show an embodiment of a container exchanging device for an extrusion press according to the present invention. FIG. 1 is a schematic front view of an essential portion of an extrusion press for carrying out this, and FIG. 2 is a container with a crosshead. A transverse cross-sectional view of the container shown in the state of being brought close to each other and showing the right half part and the left half part of the figure in different breaking positions,
FIG. 3 is a side view of the vicinity of the carriage, FIG. 4 is a side view of the vicinity of the carriage seen from the paper spine side of FIG. 3, and FIG. 5 is a front view of the entire extrusion press. 1 ... Extrusion press, 8 ... Extrusion stem, 9 ... Crosshead, 13 ... Container, 13a ... Container holder, 13b ...
… Container body, 15 …… Billet, 20 …… Cart, 25 ……
Pin receiving, 28 …… pin, 30 …… fixing pin, 30a …… head, 31a …… hole, 32 …… hook, 33 …… metal fitting.

Claims (1)

[Claims] 1. A container body which is removably fitted in an inner hole of a container holder and holds a billet in the inner hole; and an extruding stem which is driven by a driving device to advance and retreat together with a crosshead to extrude the billet from a hole of a die. And a trolley supported on the machine base so as to move forward and backward in the extrusion direction of the billet, a first coupling device for detachably coupling the trolley and the crosshead, and the trolley. A container for an extrusion press, comprising: a second connecting device for detachably connecting the container holder and the container holder; and a third connecting device for detachably connecting the crosshead and the container body. Exchange device.