JPH06126352A - Device for changing die of press machine - Google Patents

Abstract

PURPOSE:To provide a die changing device of a press machine which can shorten the time required in an operation for changing die and which can be also applicable to a die of large weight. CONSTITUTION:A shuttle truck 3 is made freely movable along a die stock position A in which plural numbers of dies 8 are stocked, a shuttle 5 mounted on the shuttle truck 3 is made freely reciprocating running between the die stock position A and a position C for conveying die in and out, and the change of the die 8 used in the press machine 1 is executed by conveying the die 8 being mounted on the shuttle 5, and together two stands of the shuttle 5 are provided and these are made individually and freely running.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a die changing device used in a press machine.

[0002]

BACKGROUND ART In recent years, various types of press products produced by press machines have been produced in small quantities.
The number of mold replacement operations that must be performed each time a press product is changed is increasing, and in order to improve the work efficiency of the entire press work, it is required to shorten the mold replacement work time. There is.

As a conventional mold exchanging device, a mono-lift system in which a predetermined mold is taken out of a plurality of molds which are stocked at the top, bottom, left and right of an automatic warehouse, or a chain is used to drive an elevating pin block. It is known to take out a mold, and also to take out a predetermined mold by rotating a rotary pallet on which the mold is placed or a rotary hanger on which the mold is suspended.

[0004]

However, in the above-mentioned conventional mold exchanging apparatus, it takes a long time for exchanging the mold, and therefore the work efficiency is poor and the metal mold which has been required in recent years. It was not always possible to sufficiently reduce the mold replacement work time. Further, there is a problem in that the molds applicable to the conventional mold exchanging device are limited to relatively lightweight molds and cannot be applied to heavy molds.

It is an object of the present invention to perform a mold replacement work in a short time and improve the efficiency of this work.
The present invention provides a die exchanging device for a press machine which can be applied to a heavy die and can increase the applicable weight of the die.

[0006]

A mold exchanging device for a press machine according to the present invention has a mold stock position, a shuttle carriage arrangement position, and a mold loading / unloading position. Multiple molds are stocked, and a shuttle carriage that can move along the multiple molds stocked at this mold stock position is arranged at the shuttle carriage placement position.A shuttle is mounted on this shuttle carriage. The shuttle reciprocates between the mold stock position and the mold loading / unloading position, and the mold loaded / unloaded on the shuttle is carried from the mold stocking position to the mold loading / unloading position. The present invention is characterized in that a die loading / unloading device for loading / unloading the slab into and out of the press machine is provided, and that two shuttles are provided, and these shuttles are individually movable.

[0007]

[Function] When the shuttle carriage carrying the shuttle moves, the shuttle is sent to a position where a predetermined mold to be carried into the press machine is stocked, and after the mold is loaded on the shuttle, the shuttle carriage is moved. The shuttle reaches the die loading / unloading position by the movement and the traveling of the shuttle itself, and the die is loaded into the press machine by the die loading / unloading device provided at the die loading / unloading position. When the used mold is taken out of the press machine, the mold loading / unloading device, the shuttle and the shuttle trolley operate in reverse order to the above, and the mold unloading to the mold loading / unloading position moves the shuttle and the shuttle trolley. It is moved back to the mold stock position.

Since there are two shuttles and these are individually movable, while one shuttle is returning the used mold from the press machine to the mold stock position, the other shuttle It is possible to carry out the work of sending the die of the above to the die loading / unloading position and loading it into the press machine.
The die replacement work can be completed in a short time. Further, since each shuttle carries a mold and travels back and forth between a mold stock position and a mold loading / unloading position, a heavy mold can be carried.

[0009]

An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a plan view of a mold exchanging device according to the present embodiment, which is arranged on the rear side of the press machine 1. The mold exchanging device includes a mold stock position A and a shuttle in order from the press machine 1. It has a carriage arrangement position B and a mold loading / unloading position C. At the die stock position A, a plurality of (four in this embodiment) die storage parts a to d are provided. A shuttle carriage 3 is arranged on the rail 2 at the shuttle carriage arrangement position B. The shuttle carriage 3 has wheels 4 as shown in FIG. 2 and is movable along the mold stock position A by motor power. ing.

As shown in FIG. 1, the shuttle carriage 3 is provided with two shuttle mounting portions e and f, on which the shuttle 5 can be mounted. There are two shuttles 5,
Each structure is the same. That is, each shuttle 5
Has a track 6 driven by a motor or the like on both left and right sides, and the shuttle 5 travels on the track 6. Further, as shown in FIG. 2, a lift pin 7 is provided on the upper surface of the shuttle 5, and the lift pin 7 is moved up and down by a hydraulic cylinder so that the shuttle 5 can run while supporting the mold 8 by the lift pin 7 that has been lifted. ing.

As shown in FIG. 1, each mold storage unit a to d at the mold stock position A is provided with a track 9 on which an endless track 6 can be placed and on which a shuttle 5 can travel. It is also provided in each of the shuttle placement parts e and f, and further provided in the mold loading / unloading position C. In addition, racks with which the pinions provided on the shuttle 5 are engaged are arranged on these running paths 9, whereby the travel distance detection encoder of the shuttle 5 is operated and the shuttle travel distance is detected. . Each of the mold storage units a to d is provided with a mold receiving base 10 on both sides of the runway 9, and the left and right ends of the mold 10 are placed on these receiving bases 10 to form the mold storage units a to d. The mold 8 is stored.

As shown in FIG. 2, the mold receiving base 10 is formed higher than the runway 9. Therefore, when the mold 8 is placed on the receiving base 10, a space S is formed under the mold 8, and the lower space is formed. The shuttle 5 can enter the S from the shuttle cart 3. In addition, as shown in FIG. 1, in each of the mold storage parts a to d,
Guide rollers 11 are provided on both sides of the track 9,
The die 8 is positioned in the left-right direction by these guide rollers 11 and is guided and moved in the front-rear direction with respect to the press machine 1. Such guide rollers 11 are arranged on the shuttle mounting portion of the shuttle carriage 3. e, f, a die loading / unloading position C, and the press machine 1 are also provided.

At the die loading / unloading position C, the die 8 placed on the shuttle 5 and transported to this position C is pressed by the press machine 1.
A die loading / unloading device 12 for loading and unloading from the press machine 1 is provided. The device 12 has a pair of left and right devices having the same structure.

The structure of the mold loading / unloading device 12 is shown in FIGS. 2 to 4, and the device 12 is provided with the swing arm 13 shown in FIG. 2, and this swing arm 13 is a cylinder centered on the shaft 13A at the lower end. 14 makes it possible to swing in the direction of the press 1 machine. At the upper end of the swing arm 13, the link 15 shown in FIG.
The rear ends are connected by a shaft 13B, and there are a pair of left and right links 15 as shown in FIG.
A hook 16 is vertically rotatable at A. This hook 16 is a cylinder 17 attached to the link 15.
The tip 16A is adapted to be inserted into the hole 8A of the die 8 when it is turned up and down and turned up.

As shown in FIG. 3, a sliding member 18 is attached to the link 15 by a shaft 16A so as to be vertically rotatable. The sliding member 18 slides on a guide member 19 extending linearly in the direction of the press machine 1. It is freely engaged. Therefore, when the swing arm 13 swings, the link 15 and the hook 16 move forward and backward in the direction of the press machine 1 by the linear guide action of the sliding member 18 and the guide member 19.

As shown in FIG. 3, the guide member 19
Is attached to a slider 20, and the slider 20 is slidably engaged with a rail portion 9A provided on the track 9 with low friction. Further, the slider 20 is provided with a plurality of rollers 21, and the mold 8 can be delivered to the rollers 21 from the shuttle 5. After the die 8 is delivered to the roller 21, the tip 16A of the hook 16 is inserted into the hole 8A of the die 8 and the swing arm 13 is swung, so that the die 8 moves on the roller 21. , Mold 8
The slider 20 moves forward and backward with respect to the press machine 1 due to the low frictional force with the rail 9A by the moving force transmitted from the roller 21 to the roller 21.

The swing arm 13, the link 15, the hook 16, the slider 20 and the like constitute the die loading / unloading device 12 of a pusher device type for pushing and pulling the die 8.

As shown in FIG. 2, a die lifter 22 with a roller that moves up and down by a cylinder is provided at the die placement position inside the press machine 1, and a positioning pin 23 for positioning the front end position of the die is erected. It is set up. Further, a shutter 24 is provided on the rear surface of the press machine 1 so as to be vertically movable.

As shown in FIG. 1, the shuttle carriage 3 is provided with a die information reader 25, and the reader 25 is movable in the direction of the die stock position A by a cylinder 26. The mold 8 is provided with a mold information card 27 that can be read by the reader 25, and the card 27 records information about pressed products that can be produced by the mold.

Next, the operation will be described.

Each of the mold storage parts a to d at the mold stock position A
A plurality of molds 8 capable of producing different pressed products are stored in. The shuttle trolley 3 travels along the rail 2 so that the reader 25 at the protruding position on the cylinder 26 is
Reads from the card 27 information about the molds 8 stored in the respective mold storage units a to d, and this information is stored in the storage unit of the control device. After this work is completed, the shuttle carriage 3 moves by a required distance, and as a result, one of the two shuttle mount portions e and f provided on the shuttle carriage 3 (hereinafter Shuttle mounting part e
Is the same as the position of a specific mold storage unit (hereinafter, referred to as a mold storage unit a) in which a mold corresponding to a pressed product to be produced is stored. Next, the two shuttles 5 placed on the shuttle placement parts e and f
Of the shuttle 5 that was placed on the shuttle platform e
Runs toward the mold storage unit a and reaches the lower space S shown in FIG. 2 below the mold 8 stored in the mold storage unit a.

Next, the lift pin 7 of the shuttle 5 rises, the mold 8 is received from the receiving base 10 on the lift pin 7, and the shuttle 5 having the mold 8 placed on the lift pin 7 in this manner faces the shuttle carriage 3. The vehicle travels back and reaches the shuttle platform e. Next, the shuttle trolley 3 moves a required distance, and the position of the shuttle mounting part e and the position of the mold loading / unloading position C match. After this, the shuttle 5 is the press machine 1.
To the die loading / unloading position C.

The lift pin 7 of the shuttle 5 is shown in FIG.
As shown in FIG. 3, the mold 8 is transferred to the roller 21 of the slider 20. Then hook 1
6 is rotated upward by the cylinder 17, and the tip 16A is the mold 8
Insert into the hole 8A. After that, the swing arm 13 swings toward the press machine 1, whereby the die 8 is pushed and moved on the roller 21 toward the press 1, and at this time, the slider 20 also moves to the rail portion 9A as described above. 2 to move toward the press machine 1 side as shown in FIG.

Therefore, as shown in FIG. 2, since a shutter 24 for opening and closing the rear surface of the press machine 1 is provided, a guide member for guiding the mold 8 into the press machine 1 is provided at the mold loading / unloading position. Even if it cannot be provided by extending from C to the inside of the press machine 1, the slider 8 protruding toward the press machine 1 can reliably guide and move the mold 8 into the press machine 1.

At this time, the die lifter 22 of the press machine 1
Is rising, and the die 8 is transferred from the roller 21 of the slider 20 to the die lifter 22. Even after the die is transferred to the die lifter 22, the swing arm 13 is swung toward the press machine 1 side. Therefore, the pressing force of the swing arm 13 acting from the hook 16 causes the front end of the die 8 to move. The die lifter 22 is lowered while being pressed against the positioning pin 23, and the hook 16 is removed from the mold 8 in this positioning state,
The die 8 is clamped at a predetermined position by a die clapper (not shown).

As a result, the preparation for the press work is completed and the press work is started. During this press work, the shuttle carriage 3 moves by a required distance in order to load a predetermined die used for the next press work on the shuttle 5 mounted on the shuttle mounting portion f of the shuttle carriage 3, and thereafter. , The shuttle 5 travels back and forth in the same manner as the above-mentioned shuttle 5 to the mold storage unit in which the predetermined mold is stored, and the shuttle carriage 3
This mold is taken out to the shuttle mounting part f of.

After the pressing work is completed, the used die 8 in the press machine 1 is lifted by the die lifter 22, and thereafter, the hook 16, the swing arm 13 and the like which constitute the die loading / unloading device 12. Reversely operates as described above, and as a result, the mold 8
Is returned to the mold loading / unloading position C while being placed on the roller 21 of the slider 20 protruding toward the press machine 1, and the lift pin 7 of the above-mentioned shuttle 5 standing by at this position C is lifted to the shuttle 5. Delivered. Then, the shuttle 5 travels to the shuttle mounting portion e of the shuttle carriage 3 and, after the shuttle carriage 3 has moved by the required distance, the shuttle 5 travels to the mold storage portion a at the mold stock position A and stores this storage portion. Return the mold 8 to a.

As described above, the shuttle 5 is installed in the mold storage section a.
While the work of returning the used die 8 carried out from the press machine 1 to the die storage section a by entering the press machine 1 is performed, the die used for the next press work is changed to the press machine 1 Carry out the work. That is, since the die 8 used for the next press work is loaded on the shuttle 5 on the shuttle loading portion f of the shuttle carriage 3, the shuttle loading portion f is shuttled until it coincides with the die loading / unloading position C. The dolly 3 moves, and then the shuttle 5 travels to the mold loading / unloading position C. Then, the mold loading / unloading device 12 at the position C performs the same operation as described above, and thus the mold 8 is loaded into the press machine 1 and set at a predetermined position.

In the above, the drive of the shuttle 5, the shuttle carriage 3, the mold loading / unloading device 12, etc. is performed by a signal from the control device.

As described above, in this embodiment, two shuttles 5 for carrying the mold 8 are provided, and these shuttles 5 are individually movable, so that the used molds from the press machine 1 are used. While the work for returning 8 to the mold stock position A is being performed using one shuttle 5, the other shuttle 5 is used to carry the mold 8 to be used for the next press work into the press machine 1. Therefore, it is possible to shorten the working time of the die replacement work and improve the workability.

Further, since the shuttle 5 is designed to carry the mold 8 and travel between the mold stock position A and the mold carry-in / out position C, even a heavy mold can be carried and the shuttle 5 The weight of the mold to which the mold exchanging device according to the embodiment can be applied is wide.

Further, since the shuttle carriage 3 moves along the plurality of molds 8 stocked at the mold stock position A while mounting the shuttle 5, the shuttle 5 is provided with a predetermined mold storage unit at the mold stock position A. Can be sent quickly, which also saves work time.

Further, in the mold storage parts a to d, since the shuttle 5 is structured to enter the lower space S of the mold 8, the space for disposing the mold exchanging device can be reduced as a whole.

Further, the press machine 1 has positioning pins 23.
Is provided, and the front end of the mold 8 is pressed against the positioning pin 23 to position the mold 8.
Can be reliably positioned. In particular, since the die 8 is pressed against the positioning pin 23 by the die loading / unloading device 12, this device 12 is a device for loading / unloading the die 8 into / from the press machine 1, and Type 8
It also serves as a device for positioning, and the number of parts is reduced and the structure is simplified accordingly.

Further, since the mold information card 27 provided on the mold 8 is read by the reader 25, information about these molds can be obtained in advance. In particular, in this embodiment, since the reader 25 is arranged on the shuttle carriage 3, information about each mold 8 can be obtained by running the shuttle carriage 3, and the shuttle carriage 3 moves the shuttle 5 at a predetermined position. Since it serves as both a means for carrying up to and a means for acquiring mold information, it is possible to reduce the number of parts and simplify the structure.

The structure for causing the slider 20 to project and move to the press machine 1 side is not limited to that of the above-described embodiment, and a reciprocating drive device such as a cylinder may be used.

Further, the mold loading / unloading device 12 of the above-mentioned embodiment is of a pusher device type in which the mold 8 is pushed and pulled by the swinging arm 13 via the hook 16, but the structure of this device is similar to this. There is no limitation, and for example, a chain drive type, or a rack or pinion drive type may be used.

Further, in the above-mentioned embodiment, the mold stock position A, the shuttle carriage arrangement position B, and
Although the mold loading / unloading position C is arranged, the layout of the mold exchanging device according to the present invention is not limited to this. For example, the mold loading / unloading position C and the press machine 1 may be arranged with respect to the shuttle carriage positioning position B. It may be arranged on the same side as the mold stock position A.

[0039]

According to the present invention, since the dies used in the press machine are exchanged by the two shuttles which can be independently moved, the dies can be exchanged in a short time and workability is improved. Improvement can be achieved. Further, since the shuttle is loaded with molds and travels, it is possible to carry even heavy molds, and it can be applied to a wide range of molds.

[Brief description of drawings]

FIG. 1 is a plan view showing an entire mold exchanging device according to an embodiment of the present invention.

FIG. 2 is a side sectional view of FIG.

FIG. 3 is a front sectional view showing a main part of the mold loading / unloading device shown in FIGS. 1 and 2;

FIG. 4 is a side sectional view of the device.

[Explanation of symbols]

 1 Press machine 3 Shuttle bogie 5 Shuttle 8 Mold 12 Mold loading / unloading device 25 Mold information reader 27 Mold information card A Mold stock position B Shuttle carrier location C Mold loading / unloading position

Claims (1)

[Claims] 1. A mold stock position in which a plurality of molds are stocked, a shuttle carriage movable along the molds in the mold stock position, a shuttle mounted on the shuttle carriage, and A die loading / unloading position is provided adjacent to the shuttle truck placement position where the shuttle truck is placed, and a die loading / unloading device in which a die loading / unloading device for loading / unloading the die loaded on the shuttle to / from the press machine is placed. The shuttle is movable from the mold stock position to the mold loading / unloading position, transports the mold to the mold stock position and the mold loading / unloading position, and the shuttle runs individually. A die exchanging device for a press machine, which is provided with two freely movable units.