JPH0445251B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an automatic exchange device for a plurality of molds, and more particularly to an automatic exchange device for exchanging a plurality of molds used in a plurality of molding machines.

(Conventional technology) Generally, when forming metal products, etc.
Multiple molding machines such as metal press machines are arranged in line according to the molding process, and each of these molding machines is set with various molds of different shapes according to the molding process.
The product is molded using each of these molds according to the molding process.

By the way, when various types of products are molded using a plurality of molding machines as described above, it is necessary to replace the molds set in each of the molding machines.

Conventionally, when replacing the molds set in each of the molding machines, for example, a mold exchanger that moves on rails is used instead of a forklift, and the molds are removed from each of the molding machines. The new molds are stored in a mold storage, and new molds are taken out from the mold storage and replaced and set separately in each of the molding machines.

(Problem to be Solved by the Invention) However, when replacing the molds set in each of the molding machines using the above-mentioned mold exchange machine, the mold exchange machine replaces the molds set in each of the molding machines and the mold storage. It is necessary to reciprocate the number of times corresponding to the number of molding machines. Therefore, in addition to the time required to change molds, it also requires time to travel back and forth between the molding machine and the mold storage, and time to take out molds from the mold storage. There was a problem in that the time required to replace the molds of the molding machines, that is, the time required to stop each of the molding machines, became long.

The present invention was invented in view of the above-mentioned problems, and its purpose is to automatically replace various types of molds used in the plurality of molding machines in a short time, and to It is possible to increase productivity by reducing machine stoppage time, and also to easily control automatic mold changing. An object of the present invention is to provide an automatic exchange device for a plurality of molds, which can easily and automatically exchange a plurality of molds of each molding machine, even when the molding machines are different from each other.

(Means for Solving the Problems) The present invention is an exchanging device for exchanging a plurality of molds used in a plurality of molding machines, and a mold storage shelf H
A rotary table B is provided on the movable cart 1 that can reciprocate between the molding machine and the mold storage shelf H, and on one side of the rotary table B, the number of molding machines is larger than the number of molding machines in the vertical direction. A shelf frame 2 having at least one more shelf 22 is erected, and on the other side, a base 3 supporting a mold support 4 so as to be movable near and far with respect to the shelf frame 2 is movable up and down. a first drive device that causes the movable cart 1 to reciprocate on the mold transfer machine A; and a second drive device that causes the mold support base 4 to move. A third drive device that raises and lowers the base 3, and a fourth drive device that rotationally drives the rotary table B are provided.

(Function) When replacing molds set in a plurality of molding machines arranged on both sides of the moving carriage 1 with new molds, first, the mold transfer machine A is moved to the first molding machine. By driving the drive device, the molds are moved to the mold storage shelf H side, and a plurality of new molds to be set in the plurality of molding machines from the storage shelf H are transferred to the second and third drive devices, is taken out and stored on each shelf 22 of the shelf frame 2. At this time, the shelf frame 2 has at least one empty shelf 22.
This is possible. After being stored in this manner, the transfer machine A is driven by the drive device to a position opposite to the plurality of molding machines on one side of the molding machines arranged on both sides of the moving direction of the moving trolley 1. The molds set in the plurality of molding machines and the new plurality of molds stored in each of the shelves 22 are sequentially moved to the first to third drives using the empty shelves 22. By the device,
The replacement is performed by operating the moving cart 1, the mold support stand 4, and the base stand 3.

Next, when replacing the molds of a plurality of molding machines disposed on the opposite side of the plurality of molding machines whose molds have been replaced with respect to the moving direction of the movable trolley 1, the mold storage shelf After storing the molds from H to each shelf 22 of the shelf frame 2 of the mold transfer machine A, the rotary table B is rotated by the fourth drive device 1, and the mold transfer machine A When the transfer machine A moves to a position facing the plurality of molding machines on the other side of the molding machines arranged on both sides of the moving direction, the mold support 4 moves to a position opposite to the plurality of molding machines arranged on the opposite side. Rotating and fixing the rotary table B so as to face the molding machine, and after fixing the rotation, the transfer machine A is sequentially moved to a position facing the plurality of molding machines by driving the drive device. Then, the mold is replaced. Therefore, due to the reciprocating movement of the mold transfer machine A between the plurality of molding machines and the mold storage shelf H and the rotation operation of the rotary table B, the movable cart 1 is moved on both sides along the moving direction. A plurality of molds can be exchanged for each of the plurality of molding machines arranged, the mold replacement time of each of the plurality of molding machines is shortened, and the operation stop time of each of the molding machines is significantly shortened. , productivity can be increased, and since there is always an empty shelf 22 in the mold transfer machine A, the molds can be replaced smoothly one after another, and the automatic replacement can be easily controlled by a controller, etc. can be taken as a thing.

(Example) The present invention will be described below with reference to Figures 1 to 5 showing examples thereof.
This will be explained based on the diagram.

Figure 1 shows a plurality of molding machines P ₁ to _{P 5} and P ₆ to _{P 10.}
The arrangement of two sets of molding machine groups consisting of a mold storage shelf H and two sets of running rails R on which the movable trolley 1 moves is shown, and a mold transfer machine A equipped with the movable trolley 1 is shown.
There are two installed. On both sides of the rail R, a plurality of molding machines P ₁ to _{P 5} and P ₆ to _{P 10} are installed.
and each of these molding machines P ₁ to _{P 5} and
A mold storage shelf H having a large number of unit storage shelves T having a number of shelves equal to the number of molding machines P ₁ to P ₅ arranged on one side of the rail R is arranged at a side position of P ₆ to _P 10. ing.

As shown in FIGS. 2 to 5, the mold transfer machine A is mounted on a movable cart 1 equipped with a plurality of running wheels 11 at the bottom that roll along the respective rails R. A rotary table B is provided via a device 6, and on one side of the rotary table B, a shelf frame 2 is vertically provided with a plurality of shelves 22, which are at least one more than the number of molding machines. . Further, on the other side of the rotary table B, a base 3 supporting a mold support 4 so as to be movable near and far relative to the shelf frame 2 is supported so as to be movable up and down.

Furthermore, a first drive device including a motor 12 for driving the traveling wheels 11 is provided at a lower position of the mobile cart 1, and the motor 12 drives the traveling wheels 11.
to move the mold transfer machine A to each molding machine.
_P1 to _P5 and _P6 to _P10 are moved back and forth between them and the mold storage shelf H.

In addition, the shelf frame 2 has a plurality of columns 21 erected on one side of the upper part of the rotary table B, and a plurality of shelves 22 extending in the front-rear direction are hung between the columns 21 at equal intervals in the vertical direction, Each of the molds M is stored in each shelf 22.

Each shelf 22 of the shelf frame 2 is connected to the molding machine _P1 to _P5.
and at least one more than the number of P ₆ to P ₁₀ , for example, as shown in FIG.
When five molding machines P ₁ to _{P 5} and P ₆ to P ₁₀ are arranged on both sides along the rail R, each of the shelves 22 is arranged between each of the pillars 21 in six upper and lower stages. By doing so, the mold M to be set in each of the molding machines P ₁ to P ₅ or P ₆ to _{P 10} is
is taken out from each unit storage shelf T of the storage shelf H and stored in each of the shelves 22, at least one blank shelf 22 is formed, and the molding machines _P1 to _P5 are placed on this blank shelf 22. Alternatively, the molds M taken out from P ₆ to _{P 10} can always be stored.

Further, on the other side of the upper part of the turntable B and at the front position of the shelf frame 2, a plurality of supports 31 for raising and lowering the base 3 are erected. Each of the above-mentioned pillars 3 is provided on both sides in the lateral direction.
Guide rollers (not shown) that come into contact with the support 1 are provided, and the base 3 is guided up and down along each of the support columns 31 via the guide rollers.

The base 3 is moved up and down along each of the pillars 31 by a third drive device provided in the transfer machine A, and the third drive device includes a motor 51 capable of forward and reverse rotation, a speed reducer 52, etc. Both of these are attached to the upper part of the support column 31, and a chain 63 is connected to the sprocket 61 of the reduction gear 52 and the sprocket 62 provided on the rotary table B.
Both ends of the chain 63 are connected to the base 3, and the chain 63 is driven by the motor 51 to raise and lower the base 3.

Further, the mold support 4, which is provided on the upper part of the base 3 so as to be movable back and forth, is composed of two vertical slide members 41 and 42 that are stacked vertically,
By moving each of the slide members 41 and 42 from the base 3 in the front and back directions, each mold M can be taken out from each molding machine P, and new molds stored in each shelf 22 of the shelf frame 2 can be removed. The mold M is taken out from each shelf 22 and set on each molding machine P, and each slide member 4
1 and 42 are motors 43 provided at the bottom of the base 3;
A second drive device consisting of the following makes it possible to move in the front and rear directions, respectively.

Furthermore, in the front part of the mold setting position in each molding machine P, and in the part opposite to the support stand 4 supported by the base stand 3, there is a pair of supports with an interval slightly wider than the length in the width direction of the support stand 4. A plurality of rollers (not shown) are rotatably supported on the upper side of each of the projecting rods 8, and the molding machine P is connected to the molding machine P through these rollers.
The mold M taken out from the mold set position can be pulled out onto the respective projecting rods 8, 8, that is, toward the mold support stand 4 side.

Further, as shown in FIGS. 4 and 5, the rotary table B is rotatably supported on the cart 1 via a circular rotation support device 9. is composed of an outer ring 91 fixed to the movable cart 1, an inner ring 92 fixed to the rotary table B, and a large number of balls 93 interposed between both rings 91 and 92. The rings 91 and 92 are rotated relative to each other by the drive of a fourth drive device provided on the movable trolley 1.

Incidentally, the fourth drive device is composed of a rotation motor 71 and a speed reduction device 72 attached to the movable cart 1.

The mold storage shelf H shown in FIG. 1 is made by connecting a large number of unit storage shelves T with a connecting device such as a chain so that it can move in a circular motion, and the direction of movement thereof is set according to the traveling rail R. Although the unit storage shelves T are arranged in a direction perpendicular to the length direction, the unit storage shelves T may be moved along the running rails R, may be movable, or may be fixed shelves.

Next, among the plurality of molding machines disposed on both sides of the movable dolly 1 in the moving direction, each of the plurality of molding machines P ₁ to _{P 5} disposed on one side along the moving direction of the movable dolly 1 is heated. We will explain the mold exchange when exchanging a set mold with a new mold, but for convenience of explanation, the first drive device will be referred to as the bogie running motor 12, and the second drive device will be supported. The platform slide motor 43 and the third drive device are referred to as a base lift motor 51, and the fourth drive device is referred to as a rotation motor 71.

Next, a description will be given of the mold changing operation for the molding machines P ₁ to _{P 5} of the automatic mold changing device configured as described above.

First, the mold storage shelves H are circulated, and a fixed unit storage shelf T in which the molds M to be replaced are stored according to the arrangement order of the molding machines P ₁ to _{P 5} is transferred to the transfer machine A.
Stop at the transfer position.

After the unit storage shelf T is located at the transfer position, the rotary table B is rotated by the rotation motor 71, and the mold support base 4 is made to face the unit storage shelf T. , the transfer machine A is moved from the standby position to the transfer position, and after reaching this transfer position, the molds M stored in the unit storage shelves T are transferred to each shelf 22 of the transfer machine A. In, the said molding machine
They are transferred in the order of arrangement of P ₁ to P ₅ .

Note that the order of transfer to each shelf 22 is based on the molding machine.
This is done either from the bottom to the top or from the top to the bottom corresponding to P ₁ to _{P 5} , and the blank shelf 22
should be at the bottom or top.

In other words, if it is convenient to start the replacement work from molding machine P ₁ , and if the molding machines P ₁ to _{P 5} are to be transferred from the bottom to the top in accordance with the arrangement order, the bottom shelf should be replaced with the blank shelf 22. In addition, when transferring from the top to the bottom, the top shelf is set as a blank shelf 22.

Also, if it is more convenient to start the replacement work from the molding machine _P5 , the position of the blank shelf 22 is reversed.

Furthermore, the order in which the molds M are stored in each shelf of the unit storage rack T is done in accordance with the arrangement order of the molding machines P ₁ to _{P 5} , and corresponds to the procedure of the replacement work. It is stored either from above or from above to below. By doing so, the transfer to the transfer machine A can be carried out efficiently.

After the mold transfer from the unit storage shelf T to the transfer machine A is completed, the rotary table B is rotated by 1/4 rotation by the rotation motor 71, and the mold transfer machine When A moves to a position facing a plurality of molding machines P ₁ to P ₅ , the mold support base 4 faces these molding machines P ₁ to P ₅ to fix the rotation of the rotary table B. After fixing the rotation, the transfer machine A is moved along the rail R to the molding machine P ₁
At the same time as it is moved to the ~ _P5 side, it goes around the storage shelf H, and after the unit storage shelf T corresponding to the old mold reaches the transfer position, it is stopped.

Further, if the mold order on each shelf 22 of the transfer machine A and the blank shelf 22 are set to start the exchange from the molding machine _P1 , the transfer machine A corresponds to the molding machine _P1. It stops at the replacement position. After reaching this replacement position, the old mold set in the molding machine P ₁ is taken out, stored in the blank shelf 22 provided at the lowest stage of the transfer machine A, and transferred to the second stage. The new mold was installed in the above molding machine.
It will be transferred to _P1 .

To replace this mold, first, the old mold M set at the set position of the molding machine P ₁ is pulled out from the set position onto the respective projection rods 8, 8, and then the base lifting motor 51 is pulled out. Accordingly, the base 3 and the upper slide member 42 of the support base 4 are connected to the molding machine P ₁
A pair of protruding rods 8, 8 protruding from the mold transfer machine A side
After the slide member 42 is positioned slightly lower than the upper surface of the roller, the slide member 42 is advanced between the pair of protrusions 8, 8 by the drive of the support slide motor 43. After that,
By driving the base lifting motor 51, the support stand 4 is moved upward, and the old mold M on each of the projecting rods 8, 8 is placed on the upper slide member 42.

Then, the upper slide member 42 on which the old mold M is placed is moved by the support slide motor 43.
The base 3 is moved back onto the base 3 by the drive of the base 3, and the base lift motor 51 is driven to move the base 3 so that the new mold M is stored in the shelf 22 provided on the shelf frame 2. After raising and lowering the upper slide member 42 to a position slightly higher than the position facing the empty shelf 22, at this position, the upper slide member 42 is moved toward the blank shelf 22 by the drive of the support slide motor 43, Thereafter, by lowering the base 3, the old mold M taken out onto the upper slide member 42 is stored in the blank shelf 22.

Further, as described above, after storing the old mold M taken out from the molding machine P ₁ on the blank shelf 22, the base 3 is placed in the molding machine among the shelves 22.
A new mold M to be set in _P1 is stored in 2
The base lifting motor 51 is used to raise and lower the shelf 22 to the position of the shelf 22, and then the upper slide member 42 is moved to the lower position of the shelf 22 via the support sliding motor 43. By raising the support table 4 by the beat of the base lifting motor 51, the upper slide member 4
A new mold M stored in the shelf 22 is placed on the molding machine 2, and then the base 3 is placed on the molding machine.
The motor 51 moves the upper slide member 42 up and down to a position opposite to the mold setting position of _P1 , and the support slide motor 43 moves the upper slide member 42 to the side of each of the projecting rods 8, 8. , move the new mold M on the upper slide member 42 to the rod 8,
8 to the mold setting position of the molding machine _P1 .

After replacing the mold of molding machine _P1 as described above, the transfer machine A moves to the next molding machine _P2 ,
It stops at the exchange position corresponding to this molding machine _P2 . Thereafter, the molds are replaced in the same manner as in the molding machine _P1 , and the molds in the molding machines _P2 to _P5 are replaced in the same manner.

After completing the mold replacement of the molding machines P ₁ to _{P 5} , the old gold set in each of the plurality of molding machines P ₆ to _{P 10} arranged on the other side along the moving direction of the movable trolley 1 is replaced. In preparation for replacing the mold with a new mold, the transfer machine A moves to a transfer position with the storage shelf H, but during the movement, the molding machine
Between P ₁ to _{P 5} and P ₆ to _{P 10} and the unit storage shelf T of the storage shelf H, the mold support base 4 is moved to face the unit storage shelf T by driving the rotation motor 71. So do it.

Then, a plurality of new molds to be set in the plurality of molding machines P ₆ to _{P 10} are transferred from the mold storage shelf H to each shelf 22 of the shelf frame 2, and then the rotation motor 71, when the mold transfer machine A moves to a position facing the plurality of molding machines _P6 to _P10 , the mold support stand 4 moves to a position facing the plurality of molding machines P6 _{to P10} . The rotating body B is rotationally fixed so as to face the molding machines P 6 to _{P 10} , and after the rotation is fixed, the mold transfer machine A is moved to a position facing the plurality of molding machines P ₆ to _{P 10} . The old molds set in the plurality of molding machines _P6 to _P10 and the new plurality of molds stored in each of the shelves 22 are sequentially moved by the drive of the drive device, respectively. As described above, the replacement is performed sequentially by driving the first, second, and third drive devices.

When this mold exchange is completed, the transfer machine A is made to stand by between the molding machines P ₁ to _{P 5} and P ₆ to _{P 10} and the storage shelf H.

As explained above, the movement of the mold transfer machine A to the mold transfer position, the up and down operation of the base 3, the movement operation of the support table 4 in the front and back direction, and the rotation table B The rotation operation of each motor 1 described above
2, 43, 51, and 71, the plurality of molding machines set in the plurality of molding machines _P1 to _P5 and _P6 to _P10 disposed on both sides along the moving direction of the movable trolley 1, respectively. The replacement work of the mold M can be performed automatically and efficiently in a short time.

In addition, the positions of the movable cart 1, the base 3, the mold support 4 supported on the base 3, the unit storage shelf T, etc.
A position detection device is provided to detect the positional relationship between the rotary table B and the movable cart 1, and a controller is provided to control the driving of the first to fourth drive devices and the rotation of the mold storage shelf H. When a mold is to be replaced according to a preprogrammed procedure, there is always an empty shelf 22 in the mold transfer machine A, so the program can be easily programmed.

As described above, the work of exchanging molds set in a plurality of molding machines arranged on both sides of the moving direction of the movable trolley 1 with new molds is carried out by the plurality of mold transfer machines A. By reciprocating twice between the molding machine and the mold storage shelf H and rotating the rotary table B, the mold change can be quickly performed, and the mold change time of each of the plurality of molding machines is shortened. , the operation stop time of each of the molding machines is significantly shortened, productivity is increased, and the mold transfer machine A includes:
Since the empty shelf 22 always exists, the molds can be replaced smoothly and automatically controlled by the controller.

(Effects of the Invention) As explained above, according to the automatic exchange device for multiple molds according to the present invention, it is possible to reciprocate between the mold storage shelf H, the molding machine, and the mold storage shelf H. A turntable B is provided on the mobile cart 1, and this turntable B
On one side of the top, a shelf frame 2 having a plurality of shelves 22 in the vertical direction, which is at least one more than the number of molding machines, is installed, and on the other side, a mold support stand 4 is installed with respect to the shelf frame 2. a mold transfer machine A configured to support a base 3 movably near and far from the base plate so as to be movable up and down; , a second drive device for moving the mold support 4, a third drive device for raising and lowering the base 3, and a fourth drive device for rotationally driving the rotary table B. Even when a plurality of molding machines are arranged on each side along the moving direction of the movable trolley 1, the work of replacing the molds set in the plurality of molding machines with new molds is performed as described above. All the molds can be transferred by one reciprocating movement of the mold transfer machine A between the plurality of molding machines and the mold storage shelf H.

In other words, the mold transfer machine A is capable of reciprocating between a plurality of molding machines and a mold storage shelf H, and is equipped with a rotary table B that can be rotated on the movable cart 1. A plurality of shelves 22, which are at least one more than the number of molding machines, are vertically arranged on the rotating table B, and the shelf frame 2 is provided with the same number of molds as the molding machines. Even when the shelves are housed, there is always an empty shelf 22, and a mold support stand 4 is provided on the side of the shelf frame 2.
A base 3 supports the shelf frame 2 so as to be movable near and far.
is supported so that it can be raised and lowered, and the mold can be moved in and out by moving the machine stand 3 and the mold support stand 4. Therefore, the molding machines are placed on both sides along the moving direction of the movable trolley 1. Even if multiple units are installed,
a mold set in the plurality of molding machines;
All the molds can be replaced with new molds by one round trip between the mold transfer machine A and the mold storage shelf H. It is possible to shorten the time required to replace the molds of the molding machines, and to shorten the downtime required when replacing each of the molding machines, thereby significantly increasing productivity.

Moreover, when the empty shelf 22 is provided in the shelf frame 2, a plurality of shelves, one more than the number of molding machines, are arranged in the vertical direction, so that the raising and lowering of the base 3 and the mold support can be controlled. When exchanging new and old molds in each molding machine by moving the molding machine in the forward and backward direction in step 4, the exchange can be performed at the same position without moving the movable trolley 1. The mold replacement time can be shortened, and even if automatic control is performed using a controller or the like, the control can be simplified.

Further, since the rotary table B is rotatably provided on the movable cart 1, the rotation of the rotary table B moves the mold transfer machine A to the molding machine located on one side in the moving direction of the movable cart 1. The molding machine located on the other side is not only changed in direction to correspond to the mold storage shelf H, but also this direction change is moved from the mold storage shelf H to the molding machine or from the molding machine to the mold transfer machine A. This can be done in the middle of the process and at the same time as the process is being moved, which can also reduce work time.

[Brief explanation of the drawing]

Fig. 1 is a schematic plan layout showing one embodiment of the automatic exchange device of the present invention, Fig. 2 is a schematic side view of the mold transfer machine, Fig. 3 is a front view of the same, and Fig. 4 is the same part. The abbreviated enlarged sectional view, FIG. 5, is a plan view of FIG. 2. A... Mold transfer machine, B... Turntable, 1... Moving trolley, 2... Shelf frame, 22... Shelf, 3... Base, 4
...Support stand, ...First drive device, ...Second drive device, ...Third drive device, ...Fourth drive device, H...Mold storage shelf.

Claims (1)

[Claims] 1 A mobile cart 1 which is an exchange device for exchanging a plurality of molds used in a plurality of molding machines, and is capable of reciprocating between a mold storage shelf H and the molding machine and the mold storage shelf H. A turntable B is provided above, and this turntable B
On one side of the top, a shelf frame 2 having a plurality of shelves 22 in the vertical direction, which is at least one more than the number of molding machines, is installed, and on the other side, a mold support stand 4 is installed with respect to the shelf frame 2. a mold transfer machine A configured to support a base 3 movably near and far from the base plate so as to be movable up and down; , a second drive device for moving the mold support 4, a third drive device for raising and lowering the base 3, and a fourth drive device for rotationally driving the rotary table B. Automatic exchange device for multiple molds.