JPH0649310B2 - Product take-out control system in injection molding machine - Google Patents

Description

The present invention relates to a product takeout control system in an injection molding apparatus.

[Prior Art] An automatic operation control system for an injection molding apparatus disclosed in Japanese Patent Publication No. 61-9128 has been proposed. This automatic operation control system can automatically control the preheating and replacement of molds, the switching of product raw materials, and the molding conditions of the injection molding machine in accordance with the progress of the production schedule.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional automatic operation control system, consideration is not given to automatically responding to the operation operation of the product unloader in accordance with the update of the production schedule. .

Therefore, each time the production schedule progresses and a product is replaced, the operation of the product unloader that should correspond to a new product (for example, the die-side product unloading position of the unloading chuck, the unloading conveyor-side product dispensing position, those It is necessary to artificially input the chuck moving path and the chuck moving timing, etc. between) to the unloader controller. This causes insufficient thorough rationalization of the injection molding work, and becomes a cause of hindering the rationalization of the production of high-mix low-volume products.

An object of the present invention is to automatically control the operation of the product unloader in response to the update of the production schedule, and achieve a high degree of rationalization of the injection molding work.

[Means for Solving the Problems] The present invention is a product take-out control system in an injection molding apparatus having an injection molding machine and a product take-out machine, and a molding machine controller for controlling the injection molding machine, An injection molding machine that includes a unloader controller that controls a product unloader, a main controller that controls each controller, a storage device, and an input / output device, and the main controller is an injection molding machine written from the input / output device. Production schedule, and data relating to the operating conditions of the product take-out machine that are predetermined in accordance with the progress of the production schedule are read out and transferred to each controller, and each controller in accordance with the above data, the injection molding machine and the product take-out machine. The operation of is automatically controlled in response to the update of the production schedule.

[Operation] According to the present invention, the product take-out machine responds to a product change accompanying the progress of the production schedule of the injection molding machine, and its operation is automatically controlled. Therefore, even when producing a wide variety of small-lot products, the product unloader operates, for example, on the die-side product unloading position of the unloading chuck, the unloading conveyor-side product unloading position, and the chuck movement path and chuck movement timing between them. The operation is automatically switched and controlled at a predetermined timing corresponding to the production of a new product. That is, the present invention can automatically control the operation of the product unloader in response to the update of the production schedule, and achieve a high degree of rationalization of the injection molding work.

[Embodiment] FIG. 1 is a schematic diagram showing an injection molding apparatus to which an embodiment of the present invention is applied, FIG. 2 is a block diagram showing an example of a control system in the present invention, and FIG. It is a flowchart which shows an example of a control procedure.

The injection molding device 10 includes a plurality of injection molding machines 11, a raw material switching device 12 attached to each of the injection molding machines 11, a mold storage device 13, a mold preheating device 14, and a mold replacement device 1.
5, a mold temperature controller 16, a product unloader (robot) corresponding to each individual injection molding machine 11, a unload chuck storage device 18, and a unload chuck exchange device 19.

The raw material switching device 12 switches the raw material to be put into the injection cylinder of each injection molding machine 11.

The mold storage device 13 includes a mold storage shelf 13A that stores all the molds that are sequentially exchanged and used by the entire injection molding machine 11 according to the progress of the production schedule, and each shelf of the mold storage shelf 13A. A mold storage cart 13B for loading and unloading the mold is provided.

The mold preheating device 14 is equipped with a mold preheating shelf 14A for preliminarily accommodating the mold to be supplied to the injection molding machine 11 and preheating it to a predetermined temperature.

In the mold exchanging device 15, the mold storage cart 13 has a mold storage shelf 13
A mold exchanging carriage 15A is provided for receiving the mold carried out from A from the storage carriage 13B and carrying it into a predetermined mold preheating shelf 14A. Further, the mold exchanging cart 15A carries out a mold preheated to a predetermined temperature by the mold preheating rack 14A from the preheating rack 14A and exchanges the mold for a predetermined injection molding machine 11. At this time, the mold exchanging carriage 15A also removes and attaches the hot / cold water pipes for temperature control of the mold temperature control device 16.

The mold exchanging carriage 15A also carries out the work of handing over the used mold that was previously used in the injection molding machine 11 to the mold storing carriage 13B of the mold storing device 13. Further, the mold storage cart 13B carries in and returns the used mold delivered from the mold exchange cart 15A to the empty area of the mold storage rack 13A.

The mold temperature control device 16 heats the temperature of the mold used by each injection molding machine 11 under the condition of being attached to the corresponding molding machine 11.
Cool and adjust.

The product unloading machine 17 is provided with a unloading chuck 17A corresponding to the current molded product of the injection molding machine 11, takes out the molded product by the chuck 17A when the molding machine 11 opens, and carries out the molded product held by the chuck 17A. Conveyor 17B
Etc. are transferred to the payout destination.

The take-out chuck storage device 18 includes a chuck storage shelf 18A for storing all the take-out chucks 17A that are sequentially exchanged and used by all the take-out machines 17 according to the progress of the production schedule, and for each rack of the chuck storage shelves 18A. Chuck trolley 1 for loading / unloading the chuck 17A
With 8B.

The take-out chuck changing device 19 is a chuck storage cart 18B.
The chuck 17 taken out from the chuck storage shelf 18A
A chuck exchange carriage 19A for receiving A from the storage carriage 18B and exchanging the chuck with respect to a predetermined unloader 17 is provided. At this time, the chuck exchanging carriage 19A is detached and attached to the chuck 17A such as the chuck driving hydraulic pipe and vacuum pipe of the unloader 17.

The chuck exchanging carriage 19A also carries out the work of handing over the used chuck 17A that was previously used in the unloader 17 to the chuck storage carriage 18B. Further, the chuck storage cart 18B carries in and returns the used chuck 17A delivered from the chuck exchange cart 19A to the empty area of the chuck storage rack 18A.

Further, the injection molding apparatus 10 includes a first controller 21 that controls each injection molding machine 11, a second controller 22 that controls each raw material switching device 12, and a third controller 23 that controls the mold storage device 13. A fourth controller 24 for controlling the mold preheating device 14, a fifth controller 25 for controlling the mold exchanging device 15, a sixth controller 26 for controlling each mold temperature adjusting device 16, and a take-out device 17. 7th controller 27 and take-out chuck storage device 18
And an ninth controller 29 for controlling the take-out chuck changing device 19.

Furthermore, the injection molding device 10 includes a main control device (host computer) 31, an input / output device 32, and a storage device 33. The storage device 33 stores the sequence program of the injection molding device 10, and also stores the input / output device 3
2, the production schedule of the injection molding apparatus 10, the raw materials used corresponding to each product that is sequentially replaced with the progress of the production schedule, the used mold, the used take-out chuck, and the operating conditions of the product take-out machine 17 (for example, Product extraction position on the die side of the extraction chuck, product delivery position on the unloading conveyor side,
Data regarding a chuck moving path and a chuck moving timing between them) is stored. Main controller 3
1 reads out each of the above data stored in the storage device 33 and transfers the data to each of the controllers 21 to 29 in a timely manner.

As a result, the controllers 21 to 29 have the injection molding machines 11 and the raw material switching devices 1 according to the data.
2. Production of operation of die storage device 13, die preheating device 14, die exchange device 15, die temperature control device 16, product take-out device 17, take-out chuck storage device 18, take-out chuck exchange device 19. Automatically respond to and control schedule updates.

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

According to the above embodiment, the injection molding apparatus 10 operates as follows (see FIG. 3).

The main controller 31 causes the first controller 21, the second controller 22, and the fourth controller 24 to mold the next product type A time before a certain product is produced by the injection molding machine 11 and the product type is changed to the next product. Transfer conditions, raw material conditions, and preheating conditions. As a result, the second controller 22 causes the raw material switching device 12 to start sucking and drying the next raw material, and the fourth controller 24 causes the mold preheating device 14 to start preheating control of the next die.

The main controller 31 is configured such that a certain injection molding machine 11 completes the production scheduled shot of the current product before B shot, and the third controller 23, the fourth controller 24, and the fifth controller 2
The following control is performed by the fifth, eighth, and ninth controllers 28, 29. That is, the third controller 2
3 gives an instruction to carry out the next die to the die storage device 13.
The fourth controller 24 stops the preheating of the next die by the die preheating device 14. The fifth controller 25 carries out the next mold from the mold preheating device 14 by the mold exchanging device 15,
The next mold is put on standby in front of the injection molding machine 11 where the next mold is used. Eighth controller 28 and ninth controller 29
Gives a take-out command of the next take-out chuck to the take-out chuck storage device 18, the take-out chuck storage device 18 delivers the next take-out chuck to the take-out chuck exchanging device 19, and the take-out chuck exchanging device 19 uses the next take-out chuck as the first take-out device 17. Wait before.

The main controller 31 causes the second controller 22 to supply the current raw material by the raw material switching device 12 corresponding to the injection molding machine 11 before the C shot where the injection molding machine 11 completes the production scheduled shot of the current product. To stop.

When a certain injection molding machine 11 completes the production-scheduled shot of the current product, the main controller 31 determines whether the first controller 21,
A replacement command is given to the second controller 22, the fifth controller 25, and the ninth controller 29, and the sixth controller 2
6. Transfer data of the next product type to the seventh controller 27. That is, the first controller 21 and the fifth controller 25 give a mold replacement command to the mold replacement device 15 to replace the mold of the injection molding machine 11. The second controller 22 starts supplying the next raw material. The ninth controller 29 gives a take-out chuck exchange command to the take-out chuck exchange device 19 to exchange the chuck 17A of the take-out machine 17. The sixth controller 26 obtains a mold temperature control condition suitable for the next product. 7th
The controller 27 obtains the operating condition for the unloader 17 that matches the next product.

After the replacement work and the data transfer work are completed, the main control device 31 starts the production of the next product by the injection molding machine 11 and the take-out machine 17.

After the completion of the exchange work and the data transfer work described above, the main controller 31 gives a die delivery command to the third controller 23 and the fifth controller 25, and takes out the chuck to the eighth controller 28 and the ninth controller 29. Give the delivery order of. That is, the third controller 23 and the fifth
The controller 25 returns the used mold from the mold exchanging device 15 to the mold storing device 13, and passes the next mold from the mold storing device 13 to the mold exchanging device 15. Further, the eighth controller 28 and the ninth controller 29 return the used take-out chuck from the take-out chuck exchanging device 19 to the take-out chuck storing device 18.

Next, after the above, the main controller 31 gives the fifth controller 25 an instruction to carry in the mold preheating shelf 14A of the next mold, and returns the used mold to the empty area of the third controller 23. Commanding the eighth controller 28 to return the used take-out chuck to the empty area. As a result, the mold exchanging device 15 carries the next mold to the mold preheating shelf 14A, and the mold storing device 13 stores the used mold in the mold storing shelf 13A.
Then, the extraction chuck storage device 18 returns the used extraction chuck to the empty area of the chuck storage rack 18A.

According to the above-mentioned embodiment, the product take-out machine 17 is the injection molding machine 1.
It corresponds to the product change according to the production schedule of No. 1 and its operation is automatically controlled. Therefore, even during the production of a large number of products in small lots, the product unloader operates, for example, on the die side product unloading position of the unloading chuck, the unloading conveyor side product unloading position, and the chuck moving path and chuck moving timing between them. The operation is automatically switched and controlled at a predetermined timing corresponding to the production of a new product. That is, the operation of the product unloader 17 can be automatically controlled in response to the update of the production schedule, and a high degree of rationalization of the injection molding work can be achieved.

[Effects of the Invention] As described above, according to the present invention, the present invention automatically controls the operation of the product unloader in response to the update of the production schedule, and achieves a high degree of rationalization of the injection molding work. it can.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing an injection molding apparatus to which an embodiment of the present invention is applied, FIG. 2 is a block diagram showing an example of a control system in the present invention, and FIG. 3 is an example of a control procedure in the present invention. 2 is a flowchart showing 10 ... Injection molding machine, 11 ... Injection molding machine, 17 ...
Product unloader, 21 ... First controller (molding machine controller), 27 ... Seventh controller (unloader controller), 31 ... Main control device, 32 ... Input / output device, 3
3 ... Storage device.

Claims (1)

[Claims] 1. A product take-out control system in an injection molding apparatus comprising an injection molding machine and a product take-out machine, wherein a molding machine controller for controlling the injection molding machine and a take-out machine controller for controlling the product take-out machine. And a main controller for controlling each of the above controllers, a storage device, and an input / output device. The main controller is a production schedule of the injection molding machine written from the input / output device, and a progress of the production schedule. Corresponding to the above, the data regarding the operating conditions of the product unloader that is predetermined is read and transferred to each controller,
Each controller is an injection molding machine according to the above data,
And a product take-out control system in an injection molding apparatus, characterized in that the operation of the product take-out machine is automatically controlled in response to a production schedule update.