JPH0773743B2 - Mold changing system of molding machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to a mold changing system for a molding machine such as an injection molding machine.

[Prior Art] Conventionally, in a molding line of an injection molding machine, Japanese Patent Laid-Open No. 59-101240
As described in Japanese Patent Publication No. JP-A-2003-264, there is a type including a mold exchanging system configured to have a carriage for transferring a mold on a mold transfer path extending between a mold storage section and a molding machine. . This mold exchange system returns the old mold that has been used in the molding machine to the mold storage unit on the dolly, and the new mold to be replaced this time is dispensed from the mold storage unit and the mold is replaced. After being conveyed by the trolley, the mold is put into the molding machine as the destination of the present time.

This mold exchange system quickly and efficiently replaces the old and new molds according to the production schedule of the mold used in the molding machine and the molding line that determines the amount of production in the mold.
Improve the productivity of the molding line. The expansion of this mold exchanging system is particularly important in the era of high-mix low-volume production.

[Problems to be Solved by the Invention] However, in the conventional mold exchanging system, the metal mold is stored only when the mold storing direction in the mold storing unit and the mold setting direction in the molding machine are the same. The molds cannot be replaced. This is because the truck forming the conventional mold exchanging system does not have the function of changing the direction of the mold.

Therefore, it is necessary to determine the mold storage direction of the mold storage unit so as to correspond to the mold set direction of the molding machine.

This can be realized relatively easily because when the molding machines are arranged only on one side of the mold transfer path in the molding line, the mold setting directions of the molding machines are the same.

However, when the molding machines are arranged on both sides of the mold transfer path, the mold setting directions of the molding machines on the both sides are opposite to each other so as to be point-symmetrical about the carriage located on the transfer path. Become. Therefore, in this case, it corresponds to the mold storage section in which the mold storage direction is determined so as to correspond to the mold setting direction of the molding machine on the one side, and the mold setting direction of the molding machine on the other side. As described above, it is necessary to provide a mold storage unit that defines the mold storage direction, which is difficult.

INDUSTRIAL APPLICABILITY According to the present invention, no matter which direction the mold is stored in the mold storage section, the mold can be reliably set on the molding machine as the destination of the loading after the carrier is transported by the trolley. The purpose is to

[Means for Solving the Problem] The present invention has a carriage for transferring a mold in a mold transfer path extending between a mold storage unit and a molding machine, and further, as a replacement target this time. Mold of the molding machine configured to have a control device for discharging the mold from the mold storage unit, transporting the mold by the trolley, and then inserting the mold into the molding machine as the destination of the current time. In the exchange system, the carriage is provided with a mold swivel device for changing the direction of the mold, and the control device controls the loading direction J of the mold loaded into the carriage from the mold storage unit side and the mold moving direction. Based on the setting direction K of the mold in the molding machine which is the destination of this time, the above-mentioned loading direction J of the mold is set.
The mold revolving device is operated so as to eliminate the shift in the setting direction K.

[Operation] According to the present invention, the mold transferred from the mold storage unit to the molding machine is mounted on the carriage traveling on the mold transfer path by the mold turning device provided in the carriage. The direction can be changed. Therefore, if there is a deviation between the loading direction J of the mold loaded into the trolley from the mold storage unit side and the setting direction K of the mold in the molding machine as the destination of the current loading of the mold, By electrically or mechanically operating the mold turning device, it is possible to eliminate the deviation of the loading direction J from the set direction K on the carriage.
The mold is put into a corresponding molding machine in a state where the above-mentioned deviation is eliminated. That is, no matter which direction the molds are stored in the mold storage unit, the molds can be reliably set in the molding machine as the destination of this time after being conveyed by the trolley. When automatically changing the mold by using the control device, the mold rotating device can be operated reliably and smoothly by electric control.

However, in the practice of the present invention, the mold revolving device may be mechanically operated by a collaborative work with a dog, an arm or the like provided on a carriage or at a specific position along the mold transfer path. .

[Embodiment] FIG. 1 is a schematic view showing a first embodiment of the present invention, and FIG. 2 is a schematic view showing a second embodiment of the present invention.

In the mold exchanging system of FIG. 1, 10A and 10B are mold storage shelves, 11A and 11B are molding machines, 12 is a stacker crane, and 13
Is a first carriage, 14 is a second carriage, and 100 is a control device.

The mold storage shelves 10A and 10B store the molds 15, and the stacker crane 12 puts the molds 15 in and out of the mold storage shelves 10A and 10B.

Molding machines 11A and 11B are equipped with a mold 15 to mold a molded product.

The carts 13 and 14 are movably arranged on a mold transfer path extending between the mold storage shelves 10A and 10B and the molding machines 11A and 11B, and convey the mold 15.

At this time, the molding machine 11A and the molding machine 11B are arranged so as to face each other on both sides of the mold transfer path, and their mold setting directions are
The opposite directions are point-symmetrical about the carriage 14 located on the mold transfer path.

The control device 100 includes a mold 15 used in each of the molding machines 11A and 11B.
And the production schedule of this molding line that determines the production amount of the die 15 is input, and the stacker crane 12, the first trolley 13, the second trolley 14 according to this schedule.
Control each of the and replace the old and new molds.

That is, the control device 100 draws the old mold 15 that has been used in the molding machine 11A, for example, into the discharge space 17 of the dolly 14 with the old mold discharge hand 16A provided in the second dolly 14, and the second dolly 14
To the die delivery position with the first truck 13, the old die 15 is transferred to the first truck 13 by the old die discharging hand 16A, and the first truck 13 is delivered with the stacker crane 12. Drive to the position and load old mold 15 to stacker crane 12
Transferred to the stacker crane 12, the old mold 15
Are returned to the mold storage shelves 10A and 10B. The second trolley 1 also includes an old die discharge hand 16B for handling the old die 15 that has been used by the molding machine 11B.

Further, the control device 100, for example, for the molding machine 11A, discharges the new mold 15 to be replaced this time from the mold storage shelves 10A, 10B by the stacker crane 12,
12 is moved to the die transfer position with the first truck 13, the new die 15 is transferred to the first truck 13, and the first truck 13 is moved to the second truck 14
Run to the mold delivery position with the new mold 15 as the second trolley
The new mold introduction hand 18A provided in 14 pulls the trolley 14 into the introduction space 19 and moves the second trolley 14 to the mold delivery position for the molding machine 11A.
The new mold 15 is put into the molding machine 11A by 18A. The second carriage 14 is also provided with a new mold introduction hand 18B for handling the new mold 15 that is put into the molding machine 11B.

In the above embodiment, the die transfer position between the first truck 13 and the second truck 14 is set to the old die discharge hand 16 provided on the second truck 14.
A, 16B and the new mold introduction hands 18A, 18B are constrained by the operating direction, the mold delivery position for the molding machine 11A is the A position in the figure, and the mold delivery position for the molding machine 11B is the B position in the figure. The position.

Therefore, in the above embodiment, the first carriage 13 is provided with the turning table 20 that can change the direction of the mold 15 around its own axis, and the drive motor (not shown) for the turning table 20.

Further, the control device 100 determines the loading direction J of the mold 15 loaded into the first carriage 13 from the mold storage shelves 10A, 10B via the stacker crane 12 and the destination of the current loading of the mold 15. Based on the setting direction K of the mold 15 in the molding machines 11A and 11B, the turning table 20 is operated so as to eliminate the deviation of the loading direction J of the mold 15 from the setting direction K.

It should be noted that the controller 100 recognizes the loading direction J of the mold 15 based on, for example, the storage status data of the mold storage shelves 10A and 10B that were the storage sources of the mold 15 dispensed this time, or the first carriage 13
It is performed based on the transfer result of the detection data and the like of the mold position detector installed in.

In addition, the mold 15 in the molding machine 11A, 11B as the destination of this time
The setting direction K is stored in the control device 100 in advance as data unique to each molding machine 11A, 11B.

In addition, the control device 100 sets the loading direction J to the setting direction K.
The turning limit position of the turning table 20 for eliminating the deviation with respect to, for example, the detection data of the drive amount of the drive motor for the turning table 20 or the detection data of the mold position detector installed in the first carriage 13 Recognize based on the transfer result such as.

Next, the operation of the above embodiment will be described.

According to the above embodiment, the mold storage shelves 10A, 10B to the molding machine 11
The mold 15 transferred to A and 11B can change the direction of the mold 15 on the carriage 14 that travels along the mold transfer path by the turning table 20 provided in the carriage 14. Therefore, the loading direction J of the mold 15 loaded into the carriage 14 from the mold storage shelves 10A and 10B, and the molding machine 11 as the loading destination of the mold 15 this time.
When there is a deviation in the set direction K of the mold 15 in A and 11B, the mold turning table 20 is electrically controlled to move the carry-in direction J with respect to the set direction K. 14 can be eliminated on the molding machine, and the mold 15 can be used with the corresponding molding machine
It will be put into A and 11B. That is, the mold storage shelf 10
Whichever the storage direction of the mold 15 in A, 10B is, after the mold 15 is conveyed by the trolley 14, the mold 15 is surely transferred to the molding machine 11A, 11B as the destination of the present time. Can be set.

Further, according to the above-mentioned embodiment, the mold 15 is formed by using the control device 100.
When automatically replacing, the above-described turning table 20 can be operated electrically and reliably and smoothly in an electrically controlled manner.

However, in the practice of the present invention, the mold revolving device may be mechanically operated by a collaborative work with a dog or an arm or the like provided on a carriage or at a specific position along the mold transfer path. good.

In the practice of the present invention, as shown in the second embodiment of FIG. 2, the first carriage 13 of the first embodiment is removed and the carriage 14 is removed.
Only, the trolley 14 has a turning table 20A of the present invention, and a drive motor (not shown) for the turning table 20A.
May be provided.

[Effects of the Invention] As described above, according to the present invention, no matter which direction the molds are stored in the mold storage unit, the molds are transferred to the trolley, and then the molds are It can be surely set in the molding machine as the destination.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a first embodiment of the present invention, and FIG. 2 is a schematic diagram showing a second embodiment of the present invention. 10A, 10B …… Mold storage rack (mold storage section), 11A, 11B …… Molding machine, 14 …… Second truck (trolley), 15 …… Mold, 20, 20A …… Turning table, 100… …Control device.

Claims (1)

[Claims] 1. A trolley for conveying dies is provided in a die transfer path extending between a die holding section and a molding machine, and the dies to be replaced at this time are placed in a die storage section. In a mold exchanging system for a molding machine, which is configured to have a control device for discharging the mold from the molding machine as the destination of the present time after the mold is conveyed by the carriage, The control device is provided with a mold swivel device for changing the direction of the mold, and the above-mentioned control device is provided in a loading direction J of the mold loaded into the carriage from the mold storage unit side, and in a molding machine as a destination of the current loading of the mold. A mold exchanging system for a molding machine, characterized in that, based on the mold setting direction K, the mold revolving device is operated so as to eliminate a deviation of the mold in the loading direction J with respect to the setting direction K. .