JPH01215428A - Method and device for changing die in forging machine - Google Patents

Abstract

PURPOSE:To improve the productivity of a forging machine and to realize the safety of a work by constituting the fitting and removing of a die to and from a forging machine, the storing into specified position, etc., in the system capable of moving automatically. CONSTITUTION:Traverse motion truck 9, 10 are traveled on a truck moving device 7, 8 and after arrival at the designated position of the upper part of the die changing truck 3, 4 fitting a die 33 the truck 9, 10 are approached into a work space 31 by a moving system. When the slide head 32 of a forging machine 30 is brought into contact with the die 33, the die 33 and slide head 32 are linked by a die clamp device 34. The trucks 3, 4 are then returned to the original position by retreating to the external part of the forging machine 30 by separating the die 33 and trucks 3, 4 by the die clamping device 34 once again. The removal of the dies 3, 4 is automatically executed by similar moving system as well. The productivity of the forging machine is thus improved and the working safety can be secured.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a forging machine, and particularly to a method and device for exchanging dies in a forging machine that pressurizes a forged product from two directions up and down, two directions left and right, or four directions, up and down and left and right. be.

When forging bar materials, slab materials, etc. using a forging machine, it becomes necessary to replace the mold depending on the shape and dimensions of the forged product.

In conventional forging machines that pressurize the to-be-forged object from above, the required replacement of the mold is carried out using a mold moving device 4 as shown in FIG. 6 of the accompanying drawings.
This is done using 0. That is, in this mold changing device 40, several required molds 33 are movably mounted on the bed 31 of the forging machine 30, and these molds 33 are moved between the bed 31 of the forging machine 30. The mold 33 is connected to the piston rod 42 of the mold moving cylinder 41 fixed above the bed 31. In this way, the required mold 33 is moved to the forging machine 30 by the operation of the mold moving cylinder 41. It is designed to be moved within the workspace.

However, this type of die changing device can only be used for forging machines in which the lower die of the die is fixed on the bed 31 of the forging machine 30, for example, vertically or horizontally. It is impossible to use it in a forging machine that applies pressure from two directions or from four directions: top, bottom, left and right. Therefore, when replacing the mold in such a forging machine, a jig such as a balance rod is inserted into the forging machine to move the mold in and out. ,
In the case of large molds weighing several tons, even using a crane to operate the jig may be difficult, time-consuming, or dangerous. Ta.

Therefore, the present invention solves the above-mentioned problems in the conventional method, automates the replacement of molds, improves the safety of mold replacement work, and allows mold replacement in a short time. A new mold replacement method for a forging machine, particularly a two-sided forging machine and a four-sided forging machine, and an apparatus for carrying out the same, in which it is possible to replace the forging machine and improve the operating rate of the forging machine. Its purpose is to obtain.

In the third aspect of the present invention, in order to achieve this objective, two molds on the top and bottom, two molds on the left and right, or four molds on the top, bottom, left and right used in this type of forging machine are installed at the same time. A mold exchange trolley that can be moved freely from the front and back of the forging machine to the center of the forging machine's work space is installed, and the molds installed in the forging machine are mounted on this mold exchange trolley. The problem is solved by a method and a device characterized in that the mold is replaced.

``Tuesday'' 1-Father and below, the present invention is its appearance! 1 of the accompanying drawings showing an embodiment of the
A detailed explanation will be given based on Figures 5 to 5.

First, as shown in a partially cutaway plan view of the overall arrangement of the apparatus of the present invention, a pair of gold forging machines are provided adjacent to the bed 31 of the forging machine 30 and facing the working space thereof. A mold exchange trolley traveling rail 1.2 is installed on the floor parallel to the horizontal plane passing through the center line of the work space and also passes over the bed 31 of the forging machine 30. 1.2
A mold exchange cart 3.4 is movably mounted on each of the molds.

Also, on one side of these mold exchange trolley running rails 1, 2, parallel to these rails 1.2 and at appropriate intervals from them and from each other, several sets of trolley stock rails 5.6 are arranged. is installed on the floor, and on each trolley stock rail 5, 6, 1.2 mold exchange trolleys 3.4 are placed movably. There is.

In addition, in this example, the bogie stock rail 5.6
Although two sets of rails 5.6 are shown spaced apart from each other, it is possible to have more of these rails 5.6, depending on the type of mold. Also, in this example.

It is assumed that two sets of mold exchange trolley running rails 1.2 are arranged so as to be aligned facing each other with respect to the forging machine 30, but depending on the case, only one of them may be used. good.

Furthermore, a circular crane-shaped trolley transfer device 7.8 is arranged perpendicularly to the mold exchange trolley travel rail 1.2 and the trolley stock rails 5, 6, respectively. The trolley transfer device 7.8 includes a mold exchange trolley running rail 1.2 and a trolley stock rail 5, respectively.
6, a pair of rails for the trolley transfer device installed on the floor parallel to these rails and at an appropriate distance from them, and 8 degrees above the rails, each of which can run freely. has been done.

The overall arrangement of the device of the present invention is roughly as described above, but the details of its main parts will now be described.

(1) 9 l 1 circle l Mold changing carts 3 and 4 are used in a four-way forging machine 30 as shown in FIG. 5, as shown in FIG. It is made up of a block with a certain length and a rectangular cross section, and molds 33 are placed on the top, bottom, left and right sides of the block.
A recess 3a is provided with a dimension corresponding to
Each opposing side wall of the recess 3a is provided with a pawl 3b that can be opened and closed by a suitable hydraulic mechanism or the like. That is, when mounting the mold 33 on the trolley 3, the pawl 3b is opened by a hydraulic mechanism or the like, and when the mold 33 fits into the recess 3a, the pawl 3b is opened by the hydraulic mechanism or the like so that the pawl 3b is opened by the hydraulic mechanism or the like. Grooves 3 pre-formed corresponding to each side wall
3 & to fix the mold 33 to the mold exchange cart 3.

In addition, this mold exchange trolley 3 has on each side of its lower part,
4 to 8 wheels 3c are rotatably attached at intervals in the longitudinal direction and are attached to form pairs, and these pairs of wheels 3@ move the mold exchange cart 3, It is supported on the traveling rail 1 so as to be freely movable, and at least one pair or two pairs of these wheels 3c are driven by an electric motor or a hydraulic motor arranged in the mold exchange cart 3, A mold exchange cart 3 is made movable on a traveling rail 1.

Note that instead of being driven by an electric motor placed inside the mold exchange cart 3, these drive wheels 3c are driven by an electric motor installed on the floor near the running rail 1 or in an underground pit. As a result, it is possible to drive the mold through an appropriate mechanism, or the drive wheels 3c can be driven through a hydraulic mechanism disposed within the mold exchange cart 3. In this case, the hydraulic pressure to this hydraulic mechanism is guided to the mold exchange cart 3 via a hydraulic hose placed on the floor or the like.

Further, the longitudinal center line of the recess 3a provided in the mold exchange cart 3 is made to coincide with the center line of each slide head 32 of the forging machine 30 shown in FIG. 5, and in this way,
When the mold exchange cart 3 is in a state where it has entered the working space 31m of the forging machine 30, the mold 33 is
It is designed so that it can smoothly enter the recess 3a. That is, in this state, the die 33 is inserted into the forging machine 3.
Attachment to the slide head 32 attached to the slide head 32 is performed by operating a mold clamp device 34 or the like (known in ordinary forging machines) provided inside the slide head 32.

Further, as shown in FIG. 4, projections 3d are provided on each side edge in the longitudinal direction of the upper part of this mold exchange cart 3 so as to project perpendicularly therefrom. Part 3d
each has a hook portion 3 horizontally projecting outward.
e is formed.

In addition, although the details of the mold exchange trolley 3 have been explained above,
It is a matter of theory that the same thing applies to the other mold exchange trolley 4 as well.

As shown in FIG. 2 for the case of the trolley transfer and loading device 7, this gate-shaped trolley transfer device 8 has a mold exchange trolley running rail 1 on its horizontal upper beam 7a. . ing. Incidentally, this is exactly the same in the case of the cart transfer device 8, and a traversing cart 10 is placed on the horizontal upper beam 8a (see FIG. 1) so as to be freely movable. . Further, these upper beams 7a, 8m have a rectangular planar outline with a rectangular opening, and each of the transverse carriages 9. As can be seen from the transverse truck 9 shown in FIG. 2, lO is the upper beam 7m, 8a
A pair of opening/closing arms 11 penetrating the hollow portion and capable of moving up and down are pivotable in a vertical plane in the direction of the upper beams 8m and 9a so that their lower ends face each other. However, the distance between both arms 11 is determined by a pair of protrusions provided on the top of each mold exchange trolley 3, 4 in a direction perpendicular to the direction of the traveling rail 1.2. The spacing between portions 3d and 4d corresponds approximately to the spacing between portions 3d and 4d, and when the openable arm 11 is lowered into the position of the mold changing trolley 3.4 and they are closed (in FIG.
In the case of the mold exchange trolley 3 on the right side, projections 11m formed facing each other are formed at the lower end of each openable arm 11 (indicated by a two-dot chain line).
In this way, the protrusion 3d of the mold exchange trolley 3.4 is engaged with the hook portion 3e of the protrusion 3d provided on the upper part of the
, 4d or the hook portions 3e, 4e engage with the protrusions 11a of the retractable arm 11 of the descending traversing truck 9.10, the traversing truck 9. When lO rises, it becomes possible to lift the mold exchange cart 3.4.

In addition, these trolley transfer devices 7, 8 and the transverse trolley 9゜1
The traveling drive of 0 and the lifting/lowering and opening/closing movement of the opening/closing arm 11 shall be electric or hydraulic, and the driving or operation thereof shall be stopped at a predetermined position by using a pulse transmitter or the like. This can be done accurately by performing speed control and position control, or by providing a mechanical stopper or the like.

(3) To L1 As an accessory equipment of the forging machine 30, as shown in FIGS. 1 and 3, a pair of forging material handling manipulators 21 are provided facing the work space 31&.

Also, a mold exchange trolley 3.4, a trolley transfer device 4.8, a traversing trolley 9. The running and stopping of the lO and the opening and closing of the mold holding pawls 3b and 4b and the opening/closing arm 11 attached thereto can be easily and automatically performed, and these can be carried out, for example, by the forging machine 30. Located near! It is easy to understand that it is possible to freely control the forging machine from the control panel by operating the handle or buttons of the operator of the forging machine. The explanation for this will be omitted.

Although the apparatus of the present invention has the arrangement or configuration as described above, next, a forging operation by this apparatus will be explained assuming that the operation is automatically performed.

Note that predetermined molds 33 are installed in advance on the required slide heads 32 of the forging machine 30, and mold exchange carts 3 placed on each stock rail 5.6 are installed in advance.
．． It is assumed that the required mold 33 is installed in advance at 4.

(1) ゛ To ・( ■The operator of the forging machine sets the predetermined mold number on the operation panel and presses the start button. (This causes the mold changing device to operate automatically. , the mold is attached.) ■The trolley transfer device 7 (8) is mounted on the trolley stock rail 5 (6
), at the same time the transverse trolley 9 (10) runs on the trolley moving device 7 (8), and the transverse trolley 9 (10)
The upper position of the designated mold exchange trolley 3 (4) (reach this point).

In this case, a predetermined mold 33 is mounted on the mold exchange cart 3 (4).

■The opening/closing arm 11 of the traversing cart 9 (1G) descends to a predetermined position, and the protrusion 3d of the predetermined mold exchange cart 3 (4)
, and lift up the mold exchange cart 3 (4).

(2) The trolley transfer device 7 (8) and the traversing trolley 9 (1G) each move to place the mold exchange trolley 3 (4) on the mold exchange trolley running rail 1 (2).

■The mold exchange cart 3 (4) moves toward the forging machine 3G and enters the working space 31c of the forging machine 30.

■Rad 32 slides into forging machine 30, working space 31m
When it moves toward the center of the mold 33 and comes into contact with the mold 33, the mold clamping device 34 is activated, and the mold 33 and the slide head 3
2 are connected.

■The pawl 3b of the mold exchange trolley 3 (4) opens, and the mold 33 and the mold exchange trolley 3 (4) are separated.

(2) The slide head 32 moves backward, and the mold 33 and the mold exchange cart 3 (4) are separated.

■The mold exchange cart 3 (4) retreats to the outside of the forging machine 30.

The mold exchange trolley 3 (4) is returned to its original position by the trolley transfer device Fu (8) and the traversing trolley 9 (10).

(2) ゛1's name■
The operator of the forging machine picks up the die changing trolley 3 without a die attached.
Set the number (4) on the operation panel and press the start button. (Then, the mold exchange device will automatically operate and the removal of the mold will begin.) ■Dolly transfer device 7 (8)
and the traversing truck 9 (to) is connected to the truck stock rail 5 (6
) onto the designated mold exchange trolley 3 (4). (The mold 33 is not mounted on the mold exchange trolley 3 (4).) ■The openable arm 11 of the traversing trolley 9 (10) closes and lifts the mold exchange trolley 3 (4).

■The trolley transfer mounting 7 (8) and the traversing trolley 9 (to> move, and the mold exchange trolley 3 (4) is placed on the mold exchange trolley traveling rail 1 (2).

■The mold exchange trolley 3 (4) is on the mold exchange trolley traveling rail 1.
(2), and enters the working space 31a of the forging machine 30.

■The slide head 32 of the forging machine 30 is in the work space 31a
The mold 33 attached to the slide head 32 moves toward the center of the mold exchange cart 3 (4), and the mold 33 moves toward the center of
Get stuck in it.

■The pawl 3b of the mold exchange trolley 3 (4) closes, and the mold 33 is connected to the mold exchange trolley 3 (4).

(2) The mold clamp device 34 in the slide head 32 is activated, the mold 33 and the slide head 32 are separated, and the slide head 32 is moved backward.

■The mold exchange cart 3 (4) is moved to the forging machine 30 along with the mold 33.
retreat outside.

[Co., Ltd.] The mold exchange trolley 3 (4) is the trolley transfer device 7 (8)
Then, by the movement of the traversing cart 9 (to), it is returned to its original position.

In the above description of the operation, it is assumed that only one of the mold exchange carts 3 and 4 is disposed on one side of the forging machine 30, but both mold exchange carts 3
and 4 are placed before and after the forging machine 30, respectively, so that they operate synchronously, and the mold 33 is removed and carried out from the forging machine 30 by one of the mold exchange carts 3 or 4 at the same time. By carrying in and attaching the mold 33 using the other mold exchange cart 4 or 3, the time required to replace the mold 33 can be further shortened.

The actual manufacturing results of the device of the present invention include, for example, large molds weighing 5 to 10 tons (one piece), two or four molds at the same time, and about 10 sin (minutes). It is expected that it will be possible to replace it within a short period of time.

The present invention has the above-described structure and operation, and can automatically attach and detach a mold to a forging machine and store it in a predetermined position. This makes it possible to significantly shorten the time required to change dies in forging machines, save labor, and improve work safety. Therefore, it becomes possible to greatly increase the productivity of the forging machine.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway overall layout plan view of one embodiment of the device of the present invention, FIG. 2 is a front view seen in the direction of arrow II in FIG. 1, and FIG. FIG. 4 is an enlarged front view of the die changing cart shown in FIG. 1, and FIG. 5 is a side view of FIG. 1 seen in the direction of arrow III. FIG. 6, a schematic front view of the machine, is a schematic diagram showing an example of a die moving device in a commonly used forging machine. 1.2...Mold exchange trolley running rail, 3.4...Mold exchange trolley, 3a...Four parts for mold attachment, 3b...
- Mold fixing pawl, 3C...Wheel, 3d...Protrusion, 3e...Hook part, 5.6...Dolly stock rail, 7.8...Dolly transfer device, 9. DESCRIPTION OF SYMBOLS 10... Traverse trolley, 11... Opening/closing arm that can be raised and lowered, 21... Manipulator for handling forged material, 30... Forging machine,
32... Slide head, 33... Mold, 34...
・Mold clamp device. Patent applicant Mitsubishi Nagasaki Kiko Co., Ltd. Kawasaki Steel Co., Ltd. Figure 4

Claims (1)

[Claims] 1. It has a slide head for attaching a mold to the top and bottom or left and right, or top and bottom and left and right sides of the work space, and these slide heads can be mounted together with the mold in two directions up and down, two directions left and right, or up and down and left and right. In a forging machine that performs forging work by operating from four directions toward the central working space, in order to replace the die, forging is performed on the peripheral surface toward the working space of the forging machine. A mold exchange characterized in that a trolley on which a mold can be attached and removed is advanced to a position corresponding to the slide head of the machine, and the mold is exchanged between the trolley and the slide head. Method. 2. It has a slide head for attaching molds to the top and bottom, left and right, or top and bottom and left and right sides of the work space, and these slide heads can be attached to the center of the workspace from two directions up and down, two directions left and right, or four directions up and down and left and right. In a forging machine that performs forging work by operating toward a working space, at least one mold changing cart is provided so as to be able to enter and leave the working space of the forging machine, and A mold changing device characterized in that a mold can be attached and removed at a position corresponding to a slide head of a forging machine. 3. Provide recesses for receiving molds on the circumferential surface of the mold exchange cart at each position corresponding to the slide head of the forging machine,
A mold fixing pawl is provided on each opposing side wall of each recess so that it can be opened and closed, and these pawls can be engaged with respective grooves that are previously formed in correspondence with the opposing side walls of the mold. 3. The mold changing device according to claim 2, wherein the pawls are operated by a hydraulic mechanism installed in the mold changing cart. 4. The mold exchange cart is supported by a plurality of pairs of wheels at the lower side of the car, and these wheels are installed on at least one of the front and rear floor surfaces of the forging machine so as to extend into the working space thereof. The mold exchange trolley is mounted so as to be freely movable on a pair of mold exchange trolley running rails, and at least one pair of these wheels serves as a drive wheel and is driven by a hydraulic mechanism installed on the mold exchange trolley. 4. The mold changing device according to claim 2 or 3, wherein the mold changing device is driven by, for example. 5. Install at least one pair of mold exchange trolley stock rails on the floor parallel to the mold exchange trolley running rails,
In addition, at least one gate-shaped crane-shaped trolley transfer device is connected to the mold exchange trolley travel rail and the mold exchange trolley stock rail so as to straddle the mold exchange trolley travel rail and the mold exchange trolley stock rail at right angles. The trolley transfer device is placed so that it can run freely on a pair of trolley transfer device travel rails that are installed on the floor parallel to the stock rails on the outside of the stock rails, and on the upper beam of the trolley transfer device. is provided with a movable traversing trolley, and a pair of open/close arms facing downward that can be raised and lowered and can be opened and closed are installed in advance on the upper part of the mold exchange trolley. 1
Claim 2, 3 or 4, wherein the pair of protrusions can be engaged with each other, and the mold exchange trolley can be lifted up and moved between the stock rail and the mold exchange trolley traveling rail. Mold changing device.