WO2023007655A1

WO2023007655A1 - Centralized management device

Info

Publication number: WO2023007655A1
Application number: PCT/JP2021/028112
Authority: WO
Inventors: 優希細元
Original assignee: ファナック株式会社
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2023-02-02
Also published as: DE112021007694T5; JPWO2023007655A1; CN117693420A

Abstract

The present invention enables a user to visually grasp operating information on an injection molding machine and maintenance information on a mold at the same time.　This centralized management device collects operating information on at least one injection molding machine and maintenance information on each of a plurality of molds in association with dates and times. The centralized management device is provided with a display unit that displays, for each of the molds, the operating information on the injection molding machine and the maintenance information on each of the plurality of molds in the same region in association with the dates and times.

Description

Central control device

The present invention relates to a centralized control device.

In a molding factory equipped with an injection molding machine, molds and resins are replaced for each operation to manufacture various products, and mold maintenance work is performed to maintain performance.
A technology is known in which a centralized control device is connected to a plurality of injection molding machines via a network, and collects and displays operation information and production information of each injection molding machine. See Patent Document 1, for example.

Japanese Unexamined Patent Application Publication No. 2003-1688

When deciding when to perform maintenance work on a mold, it is important to grasp maintenance information related to the mold, including the total number of shots for each mold. However, for example, when mold A is mounted on different injection molding machines B and C, and molding is performed, or after molding is performed by mounting mold B on injection molding machine A, different molds It was difficult to grasp the maintenance information dependent on individual molds A to C, such as when mold C was mounted and molded, and mold B was mounted again. It is also possible to place a mechanical counter for each mold A to C and grasp the number of shots for each mold A to C, but in this method the user checks the counter for each mold A to C. There is a possibility of missing the timing of maintenance work. In addition, the user also needs to manually record the total number of shots for each of the molds A to C and the number of shots since the previous mold maintenance work, which complicates management of maintenance information on molds.
Furthermore, which mold was mounted on which injection molding machine when and when molding was performed, operation information of the injection molding machine such as the operation mode of the injection molding machine and defective product information, and maintenance information of the mold are linked. No information was collected. For example, if the gas generated from the resin during the injection process does not escape from the mold, maintenance work to clean the mold surface is required. Due to the lack of information, it was not possible to properly decide when to perform maintenance work on the mold. As a result, the number of defective molded products increases due to overlooking the appropriate time for maintenance of the mold, and on the contrary, the operation rate of the injection molding machine decreases due to excessive maintenance of the mold. Also, in the event of an alarm stop of the injection molding machine due to mechanical galling inside the mold, it is necessary to check whether or not maintenance work such as replenishing grease to the mold and disassembling and repairing the mold has been performed appropriately. There was also a problem in terms of management of the injection molding factory.

Therefore, it is desired that the user can visually grasp the operation information about the injection molding machine and the maintenance information about the mold at the same time.

One aspect of the centralized control device of the present disclosure is a centralized control device that collects operation information of at least one injection molding machine and maintenance information of each of a plurality of molds in association with date and time, wherein the injection molding machine A display section is provided for displaying operation information and maintenance information for each of the plurality of molds in the same area in association with the date and time for each mold.

According to one aspect, the user can visually grasp the operation information about the injection molding machine and the maintenance information about the mold at the same time.

It is a functional block diagram showing an example of functional composition of a centralized control system concerning one embodiment. It is a figure which shows an example of an injection molding machine. It is a block diagram which shows the structure of a centralized control apparatus. It is a figure which shows an example of the operation information of an injection molding machine. It is a figure which shows an example of the maintenance information of a metal mold|die. FIG. 10 is a diagram showing an example in which a bar code reader is attached to an injection molding machine or a control device; It is a figure which shows an example when the barcode reader is attached to the centralized control apparatus. FIG. 11 is a flow chart for explaining a process of acquiring “total shots” of maintenance information of a mold by a maintenance information generation unit; FIG. FIG. 10 is a flow chart for explaining a process of acquiring “counter k final reset shot number” of maintenance information of a mold by a maintenance information generation unit; FIG. FIG. 10 is a flow chart for explaining a process of acquiring “counter k final reset date and time” of maintenance information of a mold by a maintenance information generation unit; FIG. FIG. 7 is a diagram showing an example of a display screen that displays operation information of an injection molding machine and maintenance information of a mold on the same screen in association with date and time; FIG. 7 is a diagram showing an example of a display screen that displays operation information of an injection molding machine and maintenance information of a mold on the same screen in association with date and time; FIG. 7 is a diagram showing an example of a display screen that displays operation information of an injection molding machine and maintenance information of a mold on the same screen in association with date and time; FIG. 7 is a diagram showing an example of a display screen that displays operation information of an injection molding machine and maintenance information of a mold on the same screen in association with date and time; FIG. 7 is a diagram showing an example of a display screen that displays operation information of an injection molding machine and maintenance information of a mold on the same screen in association with date and time; FIG. 7 is a diagram showing an example of a display screen that displays operation information of an injection molding machine and maintenance information of a mold on the same screen in association with date and time; FIG. 7 is a diagram showing an example of a display screen that displays operation information of an injection molding machine and maintenance information of a mold on the same screen in association with date and time; FIG. 7 is a diagram showing an example of a display screen that displays operation information of an injection molding machine and maintenance information of a mold on the same screen in association with date and time; FIG. 7 is a diagram showing an example of a display screen that displays operation information of an injection molding machine and maintenance information of a mold on the same screen in association with date and time; FIG. 7 is a diagram showing an example of a display screen that displays operation information of an injection molding machine and maintenance information of a mold on the same screen in association with date and time; FIG. 7 is a diagram showing an example of a display screen that displays operation information of an injection molding machine and maintenance information of a mold on the same screen in association with date and time; FIG. 7 is a diagram showing an example of a display screen that displays operation information of an injection molding machine and maintenance information of a mold on the same screen in association with date and time; 4 is a flowchart for explaining display processing of the central control device 10;

<One embodiment>
One embodiment of the centralized control device of the present invention will be described below with reference to the drawings.
FIG. 1 is a functional block diagram showing a functional configuration example of a centralized management system according to one embodiment.
As shown in FIG. 1, the centralized control system 1 includes a centralized control device 10 and n injection molding machines 20(1) to 20(n) (n is an integer equal to or greater than 1).
The central control device 10 and the n injection molding machines 20(1) to 20(n) may be directly connected to each other by wire or wirelessly via a connection interface (not shown). The central control device 10 and the injection molding machines 20(1) to 20(n) may be connected to each other via a network such as a LAN (Local Area Network) or the Internet. In this case, the central control device 10 and the injection molding machines 20(1) to 20(n) are provided with a communication section (not shown) for mutual communication through such connection.
Further, as will be described later, for example, the injection molding machine 20(1) may be provided with the centralized control device 10. FIG. In this case, the injection molding machine 20(1) equipped with the centralized control device 10 may also manage other injection molding machines 20(2) to 20(n) which are not equipped with the centralized control device 10. .
In addition, hereinafter, when there is no need to distinguish between the injection molding machines 20(1) to 20(n) individually, they are collectively referred to as the "injection molding machine 20".
Before describing the centralized control device 10, the injection molding machine 20 will be briefly described.

<Injection molding machine 20>
The injection molding machine 20 is an injection molding machine known to those skilled in the art, and operates based on operation commands from the control device 210 .
FIG. 2 is a diagram showing an example of the injection molding machine 20. As shown in FIG.
The injection molding machine 20 includes an injection section 21 that melts resin and injects it into a mold 23 and a mold clamping section 24 that opens and closes the mold 23 . When producing a product, the injection molding machine 20 heats the resin put into the injection part 21 in the cylinder 22 based on the command of the control device 210, and the molten resin is transferred to the mold clamping part 24. The cycle of injecting into the mounted mold 23, opening the mold 23, and taking out the cooled and solidified molded product is repeated.

<Control device 210>
The control device 210 is a numerical control device known to those skilled in the art, generates operation commands based on operation settings input by the user, and transmits the generated operation commands to the injection molding machine 20 . Thereby, the control device 210 controls the operation of the injection molding machine 20 .
As shown in FIG. 1, the control device 210 transmits operation information of the injection molding machine 20 to the central control device 10 together with date and time information (time stamp). It is desirable that the control device 210 transmits the operation information to the central control device 10 each time the operation information related to the injection molding machine 20 is generated or updated.
The operation information includes the number of shots, which means the number of times a product is molded after the mold 23 is mounted on the injection molding machine 20, the molding cycle time for each shot, the mechanical state of the injection molding machine 20, and the like. It is transmitted to the central control device 10 in association with the generation/update date/time (time stamp) of the operation information.
The machine state includes a preparation state, a production state, an alarm generation state, and the like, and the production state includes an automatic operation state and a manual operation state.
In addition, the operation information includes changes in molding conditions in injection molding such as cylinder temperature, injection speed, and mold temperature of the injection molding machine 20 .
By doing this, as will be described later, the centralized control device 10 acquires the operation information of each injection molding machine 20 arranged in the factory, for example, together with the generation/update time (time stamp) thereof, and stores the operation information (to be described later). It can be stored in unit 131 and managed centrally.

<Location information of mold 23>
As mentioned above, conventionally, there was a gap between the information of the mold and the injection molding machine, and there was a situation where it could not be used for data analysis.
Therefore, in the present invention, as will be described later, information on the molds 23 is collected by the centralized control device 10, and maintenance of the molds 23 linked with the operation information of the injection molding machine 20 received from the control device 210 described above is performed. By generating the information, the maintenance information of the mold 23 can be centrally managed by the centralized management device 10 .
For this reason, for example, when a barcode including an identifier for identifying the mold 23 is mounted on the mold 23, the control device 210 controls when the mold 23 is replaced in the injection molding machine 20, or When stored in the warehouse, the identifier of the mold 23 included in the barcode read via a barcode reader (not shown) included in the injection molding machine 20 or the control device 210 is centralized together with date and time information (time stamp). Send to the management device 10 . If the mold 23 is managed by a warehouse management system (not shown), when the mold 23 is stored in the warehouse, the warehouse management system (not shown) sends the money to the centralized control device 10. A type 23 identifier may be transmitted.
By doing so, the centralized control device 10 can grasp the location of the mold 23, and as described later, the centralized control device 10 associates the operation information of the injection molding machine 20 with the mold 23, Maintenance information of the mold 23 can be created, stored in a maintenance information storage unit 132 (to be described later), and managed centrally.

<Maintenance information of mold 23>
Here, the maintenance information of the mold 23 centrally managed by the centralized management device 10 will be briefly described. The maintenance information of the mold 23 corresponds to the location of the mold 23, the total number of shots by the mold 23, the total number of shots when the preset maintenance work is performed on the mold 23, and the maintenance work. Includes the last reset date and time of the counter.
Based on the maintenance information of the mold 23, the user can obtain information linking the operation information of the molding machine and the mold, such as which mold was installed in which injection molding machine when and when molding was performed, and information for each mold. It is possible to grasp the total number of shots, the number of shots from the previous maintenance work, and the like.
Details of the maintenance information of the mold 23 will be described later.

<Maintenance work for mold 23>
The mold 23 is maintained by the user every predetermined period (or predetermined number of shots) in order to produce molded products of predetermined quality. Maintenance work includes, for example, simple maintenance work such as confirmation of a molded product, cleaning of the mold surface, replenishment of grease, etc., to advanced maintenance work such as overhaul to disassemble the mold 23 .
Here, the confirmation of the molded product is maintenance work for confirming whether or not the state of the mold 23 is normal by confirming the molded product injection-molded by the injection molding machine 20 . Mold surface cleaning is a maintenance work for removing rust inhibitors and the like remaining on the surface (parting line surface) where the mold 23 is divided. Grease replenishment is maintenance work for wiping off old grease and reapplying new grease in order to suppress abrasion of the mold 23 . For overhaul of the mold, for example, in order to extend the life cycle of the mold, the mold is disassembled into parts, and the state of wear, galling, rust, etc. of each part is checked, cleaned, polished, etc. , is maintenance work to reassemble.
Therefore, as will be described later, the centralized control device 10 includes counters (not shown) for each type of maintenance work for each mold 23, and the number of shots of the mold 23 counted by any of the counters (not shown) is greater than or equal to a preset threshold, the user can be instructed to perform maintenance work corresponding to a counter (not shown) that is greater than or equal to the threshold. For example, the central control device 10 may output a work instruction for maintenance work corresponding to a counter exceeding a threshold to the control device 210 of the injection molding machine 20 to which the mold 23 is attached.
By doing so, when a work instruction for maintenance work is received from the central control device 10, the control device 210 stops the operation of the injection molding machine 20, for example, and includes the received work instruction for maintenance work in the control device 210. The user can be notified of the instructed maintenance work for the mold 23 by displaying the information on a display device (not shown) such as a liquid crystal display. After maintenance work is performed on the mold 23, the control device 210 accepts, for example, a reset command from the user to reset a counter (not shown) for the maintenance work to "0", and centrally manages the received reset command. You may make it transmit to the apparatus 10. FIG. The control device 210 may then restart the operation of the injection molding machine 20 .
By doing so, when the central control device 10 receives a reset command from the control device 210, it is possible to reset the number of shots of the counter (not shown) corresponding to the instructed maintenance work of the mold 23 to "0". Based on the counter, maintenance work can be centrally managed for each mold.

<Central control device 10>
The central control device 10 is, for example, a computer.
FIG. 3 is a block diagram showing the configuration of the central control device 10. As shown in FIG.
As shown in FIG. 3 , the centralized control device 10 has a control section 110 , a storage section 130 , an input section 150 and a display section 170 . These functional units will be described below. Functional units other than the control unit 110 will be described first, and then the control unit 110 will be described.

<Storage unit 130>
The storage unit 130 is, for example, a ROM (Read Only Memory), an HDD, or the like, and stores system programs, application programs, and the like executed by the control unit 110, which will be described later. As shown in FIG. 3 , the storage section 130 has an operation information storage section 131 and a maintenance information storage section 132 .

The operation information storage unit 131 stores, for each injection molding machine 20, operation information of each injection molding machine 20 acquired by the operation information acquisition unit 111 described later, for example.
FIG. 4 is a diagram showing an example of operation information of the injection molding machine 20. As shown in FIG.
As shown in FIG. 4, the operation information of the injection molding machine 20 stored in the operation information storage unit 131 includes at least "recording date and time", "machine condition", "number of non-defective products", "number of defective products", and "cycle time". "including.
The "recording date and time" in the operation information of the injection molding machine 20 stores, for example, the date and time when an event such as each shot, a change in molding conditions, or a change in operation mode occurs in the injection molding machine 20 .
The "machine state" in the operation information of the injection molding machine 20 stores the state of the injection molding machine 20 when an event occurs, such as the preparation state, production state, and alarm occurrence state.
The "number of good products" and "number of defective products" in the operation information of the injection molding machine 20 store product information (the number of good products or the number of defective products) of molded products for each shot of injection molding by the injection molding machine 20 .
"Cycle time" in the operation information of the injection molding machine 20 stores the time taken for one cycle of injection molding by the injection molding machine 20 for each shot.

In the maintenance information storage unit 132, for example, when the mold 23 is attached/detached to/from the injection molding machine 20, or when an event such as a change in the location of the mold occurs, a mold identification information acquisition unit (to be described later) is stored. Based on the identifier of the mold acquired by 112, the information related to the mold collected by the centralized control device 10 and the maintenance information of the mold linked to the operation information of the injection molding machine 20 received from the control device 210 are displayed. , are stored for each mold.
FIG. 5 is a diagram showing an example of mold maintenance information. Here, as a counter for each type of maintenance work for a mold, for example, a counter 1 corresponding to molded product confirmation maintenance work is illustrated. Note that the counter corresponding to the type of maintenance work is not limited to this. As described above, for example, the counter 2 corresponds to maintenance work related to mold surface cleaning, the counter 3 corresponds to maintenance work related to parts replacement, and the counter 4 corresponds to maintenance work related to periodic inspection. For example, the user may arbitrarily set a counter corresponding to each type of maintenance work and include it in the maintenance information of the mold.
As shown in FIG. 5, for example, the mold maintenance information stored in the maintenance information storage unit 132 includes at least "recording date and time", "total shots", "location", "counter 1 final reset shot number", and It includes "date and time of counter 1 last reset" and the like.

The "recording date and time" in the mold maintenance information stores, for example, the date and time information (time stamp) acquired together with the mold identifier by the mold identification information acquisition unit 112. In addition, the "recording date and time" in the maintenance information of the mold is the number of shots included in the operation information of the injection molding machine 20 in which the mold is mounted, which is received from the control device 210, changes in the machine state, and changes in the molding conditions. The date and time (time stamp) when an event such as a change occurs is stored.

"Total shots" in the mold maintenance information stores the total number of shots in which the molded product was produced using the mold based on the operation information of the injection molding machine 20 in which the mold is mounted. Acquisition of "total shots" will be described later.

The “location” in the mold maintenance information is, for example, the location of the injection molding machine 20 or the warehouse where the barcode reader that reads the identifier of the mold acquired by the mold identification information acquisition unit 112 is installed. Stored as the location of the type.

The "counter 1 final reset shot number" in the maintenance information of the mold is, for example, the number of times the counter 1 corresponding to the maintenance work for confirming the molded product for the mold with the acquired identifier was last (most recently) reset. Stores the total number of shots for the mold. Acquisition of the "counter 1 final reset shot number" will be described later.

The "counter 1 final reset date and time" in the mold maintenance information is, for example, the last (most recent) date and time (time stamp) is stored. Acquisition of the "counter 1 last reset date and time" will be described later.
As described above, the user can arbitrarily set a counter corresponding to each type of maintenance work and include it in the maintenance information of the mold.
In this way, when a plurality of counters are set, "counter k final reset shot number" and "counter k final reset date and time" are set as mold maintenance information (k≧1) corresponding to each counter k. include.

<Input unit 150>
The input unit 150 is, for example, a keyboard or a touch panel arranged on the display unit 170 described later, and receives user input. The input unit 150 may receive a threshold value of the number of cycles (the number of shots) indicating when to perform maintenance work corresponding to one or more counters for each mold, based on an input operation by a user such as a worker. .

<Display unit 170>
The display unit 170 is, for example, a liquid crystal display or the like. Based on control instructions from the display control unit 115 (to be described later), the display unit 170 displays the display format and items specified by the user through the input unit 150, and emits images for a period specified by the user. Operation information of the molding machine 20 and maintenance information of each of a plurality of molds are displayed on the same screen in association with date and time. A display screen displayed on the display unit 170 will be described later.

<Control unit 110>
As shown in FIG. 3, the control unit 110 has an operation information acquisition unit 111, a mold identification information acquisition unit 112, a reset unit 113, a maintenance information generation unit 114, a display control unit 115, and an instruction output unit .
The control unit 110 has a CPU, a ROM, a RAM, a CMOS (Complementary Metal-Oxide-Semiconductor) memory, etc., which are known to those skilled in the art and are configured to communicate with each other via a bus.
The CPU is a processor that controls the centralized control device 10 as a whole. The CPU reads the system program and application program stored in the ROM via the bus and controls the entire central control device 10 according to the system program and application program. Thereby, as shown in FIG. Configured to achieve functionality. Various data such as temporary calculation data and display data are stored in the RAM. The CMOS memory is backed up by a battery (not shown), and configured as a non-volatile memory that retains the memory state even when the power of the centralized control device 10 is turned off.

As described above, the operation information acquisition unit 111 acquires the operation information of the injection molding machine 20 transmitted from the control device 210 of the injection molding machine 20 each time the operation information related to each injection molding machine 20 is generated or updated. Get information together with date and time information (timestamp). The operation information acquisition unit 111 additionally stores the acquired operation information of each injection molding machine 20 in the operation information storage unit 131 for each injection molding machine 20 .

The mold identification information acquisition unit 112 is a control device of each injection molding machine 20 when, for example, the mold 23 is attached/detached to/from the injection molding machine 20 or an event such as a change in the location of the mold occurs. 210 to obtain the identifier of the mold.
Hereinafter, the operation of the mold identification information acquisition unit 112 will be described by exemplifying a case where a barcode reader is attached to each injection molding machine 20 or control device 210 .

FIG. 6A is a diagram showing an example in which the barcode reader 30 is attached to the injection molding machine 20(1) or the control device 210. FIG. Note that FIG. 6A shows only the injection molding machine 20(1) and describes the operation of the mold identification information acquisition unit 112, but the injection molding machines 20(2) to 20(n) are also shown This is the same as the case of 1), so the explanation is omitted.
As shown in FIG. 6A, the barcode reader 30 reads the barcode mounted on the mold 23 when the mold 23 is attached (or removed) to the injection molding machine 20, for example. The identifier of the mold 23 is acquired, and the acquired identifier of the mold 23 is output to the control device 210 . Upon receiving the identifier of the mold 23 from the barcode reader 30, the control device 210 outputs the received identifier of the mold 23 to the central control device 10 together with date and time information (time stamp).
Then, the mold identification information acquisition unit 112 of the central control device 10 acquires the identifier of the mold 23 together with the date and time information (time stamp) from the control device 210 of the injection molding machine 20(1). The mold identification information acquisition unit 112 outputs the identifier of each mold 23 together with date and time information (time stamp) to the maintenance information generation unit 114, which will be described later.

Although the barcode reader 30 is attached to the injection molding machine 20(1) or the control device 210 in FIG. 6A, the present invention is not limited to this. For example, barcode reader 30 may be attached to central control device 10 .
FIG. 6B is a diagram showing an example in which a barcode reader 30 is attached to the centralized control device 10. As shown in FIG.
As shown in FIG. 6B, the barcode reader 30 reads the barcode mounted on the mold 23 when the mold 23 is attached to (or removed from) the injection molding machine 20, for example. may be acquired, and the acquired identifier of the mold 23 may be output to the central control device 10 together with the date and time information (time stamp). The mold identification information acquisition unit 112 of the central control device 10 acquires the identifier of the mold 23 from the barcode reader 30 together with the date and time information (time stamp), and the acquired identifier and date and time information (time stamp) of the mold 23. may be output to the maintenance information generation unit 114, which will be described later.
Also, although the mold identification information acquisition unit 112 acquires the mold identifier at the timing when the mold 23 is attached (or removed) to the injection molding machine 20, the invention is not limited to this. For example, the mold identification information acquisition unit 112 may acquire the identifier of the mold read by the barcode reader 30 placed in the warehouse or the like at the timing when the mold is stored in the warehouse or the like.

When the reset unit 113 receives a reset command indicating the end of the maintenance work after the user performs the maintenance work corresponding to the counter k set according to the type of maintenance work of the mold 23, the reset unit 113 resets the mold 23. Initialize (ie, reset to '0') the number of cycles in the counter k.

For example, when the mold 23 is attached/detached to/from the injection molding machine 20 or when an event such as a change in the location of the mold occurs, the maintenance information generation unit 114 receives a mold identification information from the control device 210 of the injection molding machine 20. Based on the identifier of the mold acquired by the information acquisition unit 112, maintenance information of the mold 23 is specified in the maintenance information storage unit 132, and attachment/removal of the mold 23 to/from the injection molding machine 20, and Information such as a change in the location of the mold is created as maintenance information for the mold 23 together with date and time information (time stamp) when the event occurred, and is stored (added) in the maintenance information storage unit 132 .
After that, the maintenance information generation unit 114, for example, based on the operation information transmitted from the control device 210 of the injection molding machine 20 and its date and time information (time stamp) received by the operation information acquisition unit 111, the mold 23 maintenance information is created and stored (added) in the maintenance information storage unit 132 .
As described above, the maintenance information created by the maintenance information generation unit 114 includes, for example, date/time information (time stamp), total number of shots, and each type of mold maintenance work (for example, confirmation of molded product, number of shots for each counter k set corresponding to mold surface cleaning, grease replenishment, parts replacement, periodic inspection, etc.), final maintenance information (total number of shots or date/time information when each counter k of the mold is reset) ), the location information of the mold 23, the last update date and time information, and the like.
The operation of the maintenance information generation unit 114 will be described below with respect to (a) the case of acquiring the "total shots" of the maintenance information of the mold and (b) the acquisition of the "number of counter k final reset shots" of the maintenance information of the mold. and (c) the case of acquiring the “counter k last reset date and time” of the mold maintenance information, exemplifying the case where the mold with the identifier m is attached to the injection molding machine 20(i). do. Here, the counter k means a counter set corresponding to the type of mold maintenance work.
Note that i is an integer from 1 to n, and the identifier m is a string of numbers or letters identifying each mold, or a combination thereof. Also, even when a mold with another identifier is attached to the injection molding machine 20(i), it is the same as when the mold with the identifier m is attached to the injection molding machine 20(j) (i≠j). , detailed description is omitted.

(a) Acquisition of “Total Shots” of Mold Maintenance Information Operation related to acquisition of “total shots” of mold maintenance information by the maintenance information generation unit 114 will be described.
FIG. 7 is a flow chart for explaining the acquisition processing of the “total shots” of the mold maintenance information by the maintenance information generation unit 114 .

In step Sa1, the maintenance information generating unit 114 determines that the mold with the identifier m is the injection molding machine 20 ( i) Determine if it is attached. If the mold with the identifier m is attached to the injection molding machine 20(i), the process proceeds to step Sa2. If the mold with identifier m is not attached to injection molding machine 20(i), wait until the mold with identifier m is attached to injection molding machine 20(i).

In step Sa2, the maintenance information generation unit 114 acquires the current total number of shots ms for the mold with the identifier m from the maintenance information on the mold with the identifier m stored in the maintenance information storage unit 132.

At step Sa3, the maintenance information generation unit 114 acquires the current total number of shots ns1 of the injection molding machine 20(i) from the operation information of the injection molding machine 20(i) stored in the operation information storage unit 131.

In step Sa4, the maintenance information generation unit 114 detects the change in the number of shots of the injection molding machine 20(i), the removal of the mold with the identifier m from the injection molding machine 20(i), or the recognition of the mold with another identifier. It is determined whether or not an event has occurred in the mold with identifier m such as. If an event has occurred, the process proceeds to step Sa5. If the event has not occurred, wait until the event occurs.

At step Sa5, the maintenance information generation unit 114 acquires the current total number of shots ns2 of the injection molding machine 20(i) from the operation information of the injection molding machine 20(i) stored in the operation information storage unit 131.

In step Sa6, the maintenance information generation unit 114 calculates the total number of shots ms for the mold with the identifier m using Equation (1).
ms=ms+(ns2−ns1) (1)

In step Sa7, the maintenance information generation unit 114 stores the total number of shots ms calculated in step Sa6 in the maintenance information of the mold with the identifier m in the maintenance information storage unit 132 in association with the date and time d of the event that occurred in step Sa4. Add to and save.

At step Sa8, the maintenance information generator 114 updates the total number of shots ns1 of the injection molding machine 20(i) with the total number of shots ns2 (ns1=ns2).

At step Sa9, the maintenance information generation unit 114 determines whether or not the mold with the identifier m is still attached to the injection molding machine 20(i). If the mold with the identifier m remains attached to the injection molding machine 20(i), that is, if the event is a change in the number of shots, the process returns to step Sa4. On the other hand, when the mold with the identifier m is removed from the injection molding machine 20(i), the "total shots" acquisition process ends.

(b) Acquisition of “counter k final reset shot number” of mold maintenance information Operation related to acquisition of “counter k final reset shot number” of mold maintenance information by the maintenance information generation unit 114 will be described. .
FIG. 8 is a flowchart for explaining the acquisition processing of the “number of counter k final reset shots” of the mold maintenance information by the maintenance information generation unit 114 .

In step Sb1, the maintenance information generation unit 114 issues a reset command to the reset unit 113 for the counter 1 (not shown) set for the maintenance work of the mold with the identifier m. is input from the control device 210 of . If a reset command is input to reset unit 113, the process proceeds to step Sb2. If the reset command is not input to the reset unit 113, the reset unit 113 waits until the reset command is input.

In step Sb2, the maintenance information generation unit 114 acquires the current total number of shots ms for the mold with the identifier m from the maintenance information on the mold with the identifier m stored in the maintenance information storage unit 132.

In step Sb3, the maintenance information generation unit 114 updates the final (most recent) reset shot number mr of the counter k (not shown) of the mold with the identifier m with the total shot number ms acquired in step Sb2 (mr=ms ), and save (add) to the maintenance information of the mold with the identifier m.

(c) Acquisition of "counter k last reset date" of mold maintenance information Operation related to acquisition of "counter k last reset date" of mold maintenance information by the maintenance information generation unit 114 will be described.
FIG. 9 is a flow chart for explaining the acquisition processing of the “counter k final reset date” of the mold maintenance information by the maintenance information generation unit 114 .
Note that the processing of step Sc1 is the same as the processing of step Sb1 in FIG. 8, and the description thereof will be omitted.

In step Sc2, the maintenance information generation unit 114 acquires the date and time information (time stamp) rd when the reset command was received.

In step Sc3, the maintenance information generation unit 114 updates the last (most recent) reset date and time of the counter 1 (not shown) of the mold with the identifier m with the date and time rd acquired in step Sc2, and performs maintenance on the mold with the identifier m. Save to information.
As described above, the centralized control device 10 can collect the maintenance information of each mold in association with the date and time.

For example, the display control unit 115 displays the operation information of the injection molding machine 20 during the period specified by the user and the maintenance information of each of the plurality of molds 23 according to the display format and items specified by the user via the input unit 150. are displayed on the display unit 170 at the same time (on the same screen) in association with the date and time.
FIGS. 10A to 12D are diagrams showing examples of display screens that display operation information of the injection molding machine 20 and maintenance information of the mold on the same screen in association with date and time.
The display screens of FIGS. 10A to 10D show, as operation information of the injection molding machine 20, which injection molding machine 20 each of the molds A to D was mounted in correspondence with the date and time, and as maintenance information of the mold, The relationship between the total number of shots (total number of cycles) in each of molds A to D and the number of cycles (number of shots) of each counter is shown in relation to date and time. 10A to 10D, one scale on the horizontal axis indicates one hour. However, one scale on the horizontal axis in FIGS. 10A to 10D may be at other intervals.
For example, as shown in FIG. 10A, the mold A is mounted on the injection molding machine 20(1) from 8:00 to 14:00, and mounted on the injection molding machine 20(2) from 15:00 to 17:00. indicates that the Further, as described above, the

counters

1 and 2 are counters corresponding to simple maintenance work such as confirmation of molded products, and as shown in FIG. It is reset to '0' after maintenance work has been performed. On the other hand, the counter 2 is reset to "0" after the maintenance work corresponding to the counter 2 of the mold A is performed every 1500 shots. Further, the maintenance work corresponding to the counter 3 is, as described above, an advanced maintenance work involving disassembly (overhaul) of the mold, etc., and the counter 3 corresponds to the counter 3 of the mold A every 3000 shots. After maintenance work is performed, it is reset to "0".
The molds B to D shown in FIGS. 10B to 10D are the same as the mold A, and detailed description thereof will be omitted.
In the centralized control device 10, counters 1 to 3 (not shown) are set corresponding to three maintenance operations for each of the molds A to D. It is preferable for the user to appropriately set according to the type of maintenance work such as mold surface cleaning, grease replenishment, part replacement, and periodic inspection.

The display screens of FIGS. 11A to 11D show, as operation information of the injection molding machine 20, the percentage of defective products in a bar graph corresponding to date and time, and as maintenance information for each mold A to D, The total number of shots (total number of cycles) and the relationship between maintenance 1 to 3 and the number of cycles (number of shots) are shown in correspondence with date and time. 11A to 11D, the vertical axis on the left indicates the number of shots, and the vertical axis on the right indicates the defective product rate. One scale on the horizontal axis indicates 10 minutes. However, one scale on the horizontal axis in FIGS. 11A to 11D may be at other intervals.

The display screens of FIGS. 12A to 12D show, as operation information of the injection molding machine 20, the ratio of each operation mode in a stacked bar graph corresponding to the date and time, and as maintenance information of each mold A to D, molds A to D. The total number of shots (total number of cycles) in each of D and the relationship between maintenance 1 to 3 and the number of cycles (number of shots) are shown in correspondence with the date and time. That is, FIGS. 12A through 12D show stacked bar graphs of the proportions of each of "Production", "Preparation", "Alarm", and "Other" for each 10-minute interval. In FIGS. 12A to 12D, the left vertical axis indicates the number of shots, and the right vertical axis indicates the proportion of "production", "preparation", "alarm", and "other" in every 10 minutes. One scale on the horizontal axis indicates 10 minutes. However, one scale on the horizontal axis in FIGS. 12A to 12D may be at other intervals. In addition, the proportions of "production", "preparation", "alarm", and "other" are indicated by shaded rectangles, but colors such as "blue", "yellow", "red", and "gray" are used. can be indicated by

When a counter (not shown) of the central control device 10 exceeds a preset threshold value, the instruction output unit 116 issues an instruction to the user to perform maintenance work on the mold corresponding to the counter (not shown). For example, it is output to the control device 210 of the injection molding machine 20 on which the mold corresponding to the counter (not shown) is mounted.

<Display processing of central control device 10>
Next, operation related to display processing of the centralized control device 10 according to one embodiment will be described.
FIG. 13 is a flowchart for explaining display processing of the centralized control device 10. As shown in FIG. The flow shown here is executed each time a display instruction is received from the user.
13 when the barcode reader 30 is attached to the controller 210 of each injection molding machine 20 as shown in FIG. 6A.

In step S<b>11 , the operation information acquisition unit 111 acquires the operation information of the injection molding machine 20 transmitted from the control device 210 of the injection molding machine 20 each time the operation information related to each injection molding machine 20 is generated or updated. is acquired together with date and time information (timestamp). The operation information acquisition unit 111 stores the acquired operation information related to each injection molding machine 20 in the operation information storage unit 131 for each injection molding machine 20 .

In step S12, the mold identification information acquisition unit 112 detects each injection molding machine 20 when the mold 23 is attached/detached to/from the injection molding machine 20 or when an event such as a change in the location of the mold occurs. The identifier of each mold obtained by reading the bar code of the mold by the bar code reader 30 of the control device 210 is acquired from the control device 210 of each injection molding machine 20 together with the date and time information (time stamp). . Then, based on the mold identifier acquired by the mold identification information acquisition unit 112 , the maintenance information generation unit 114 identifies maintenance information for the mold with the identifier in the maintenance information storage unit 132 . The maintenance information generation unit 114 collects information about the mold based on the identifier of the mold, associates the operation information of the injection molding machine 20 received by the operation information acquisition unit 111 from the control device 210, Events such as attachment/detachment of the mold to/from the injection molding machine 20 and changes in the location of the mold, and update information of the date and time information (time stamp) when the event occurred are saved in the maintenance information of the specified mold. (to add.

In step S13, the display control unit 115 determines whether or not a display instruction specifying a display format, items, etc. has been received from the user via the input unit 150. If the display instruction has been accepted, the process proceeds to step S14. On the other hand, if the display instruction has not been received, the centralized control device 10 terminates the display process.

In step S14, it is determined whether or not the number of cycles (the number of shots) counted by the counter (not shown) of the central control device 10 is equal to or greater than the threshold value of the number of cycles preset for each mold and/or each maintenance work. . If the counted number of cycles (number of shots) is equal to or greater than the threshold value preset for each mold and/or each maintenance work, the process proceeds to step S15. On the other hand, if the counted number of cycles (number of shots) is smaller than the threshold value preset for each mold and/or each maintenance work, the process proceeds to step S16.

In step S15, the instruction output unit 116 causes the user to perform maintenance work whose number of cycles (number of shots) counted by the counter (not shown) of the central control device 10 received in step S14 is equal to or greater than a preset threshold. An instruction to set the counter (not shown) is output to the control device 210 of the injection molding machine 20 on which the mold corresponding to the counter (not shown) is mounted. When receiving a reset command from the user, the reset unit 113 resets a counter (not shown) that received the reset command to "0".

In step S16, based on the display instruction received in step S13, the display control unit 115 displays the operation information of the injection molding machine 20 and the plurality of molds for the period specified by the user, as shown in FIGS. 10A to 12D. The display unit 170 displays a display screen in which each piece of maintenance information is displayed on the same screen in association with the date and time. At this time, the display screen displayed in step S15 and the display screen displayed in step S16 may be on the same screen.

Although the barcode reader 30 is attached to the control device 210 of each injection molding machine 20 in the above description, the present invention is not limited to this. For example, barcode reader 30 may be attached to central control device 10 . In this case, in step S12 of FIG. 13, the mold identification information acquisition unit 112 stores the identifier of each mold obtained by reading the barcode of each mold with the barcode reader 30 as date and time information (time stamp). You may make it acquire with. The maintenance information generation unit 114 collects information about the mold based on the identifier of the mold, associates the operation information of the injection molding machine 20 received by the operation information acquisition unit 111 from the control device 210, Events such as attachment/detachment of the mold to/from the injection molding machine 20 and changes in the location of the mold, and update information of the date and time information (time stamp) when the event occurred are saved in the maintenance information of the specified mold. (addition) may be performed.

As described above, the centralized control device 10 according to one embodiment can generate and update the operation information of the injection molding machine 20 transmitted from the control device 210 of each injection molding machine 20 when the operation information of each injection molding machine 20 is generated or updated. is collected together with date and time information (timestamp). In addition, the central control device 10 collects information about each mold based on the identifier of each mold, and also collects the operation information of the injection molding machine 20 received from the control device 210 of each injection molding machine 20. To collect mold maintenance information corresponding to date and time. The centralized control device 10 displays the operation information of the injection molding machine 20 for the period specified by the user and the maintenance information of each of the plurality of molds in correspondence with the date and time according to the display format and items specified by the user. to display. That is, the centralized control device 10 displays the total number of shots for each mold, the number of shots between mold maintenance work, the date and time of the most recent (previous) mold maintenance work, etc., and displays a plurality of types of maintenance work. In order to manage information related to the operation of the injection molding machine 20 ( In particular, it also displays information on the occurrence of alarms related to molds) and production information of the injection molding machine 20 (information on the occurrence of non-defective products/defective products). As a result, the central control device 10 allows the user to visually grasp the operation information regarding the injection molding machine and the maintenance information regarding the mold at the same time.

Although one embodiment has been described above, the centralized control device 10 is not limited to the above-described embodiment, and includes modifications, improvements, etc. within a range that can achieve the purpose.

<Modification 1>
In the above-described embodiment, the central control device 10 is a device different from the injection molding machine 20, but it is not limited to this. For example, the central control device 10 may be provided in the injection molding machine 20(1). In this case, the injection molding machine 20(1) equipped with the centralized control device 10 may also manage other injection molding machines 20(2) to 20(n) which are not equipped with the centralized control device 10. .

<Modification 2>
Also, for example, in the above-described embodiment, the centralized control device 10 is one computer, but it is not limited to this. For example, part or all of the operation information acquisition unit 111, the mold identification information acquisition unit 112, the reset unit 113, the maintenance information generation unit 114, the display control unit 115, and the instruction output unit 116 of the central control device 10 can be A server may be provided. Also, each function of the centralized control device 10 may be implemented using a virtual server function or the like on the cloud.
Furthermore, the centralized management device 10 may be a distributed processing system in which each function of the centralized management device 10 is appropriately distributed to a plurality of servers.

<Modification 3>
Further, for example, in the above-described embodiment, the mold is equipped with a barcode indicating the identifier of the mold, but the present invention is not limited to this. For example, the mold may carry an IC tag that stores information indicating the identifier of the mold. In this case, the mold identifier may be read using a read/write device (not shown) attached to the injection molding machine 20 or the control device 210, or may be read using a read/write device (not shown) attached to the central control device 10. may be read as

<Modification 4>
Further, for example, in the above-described embodiment, the centralized control device 10 displayed the display screens shown in FIGS. 10A to 12D, but is not limited to this. For example, the central control device 10 may display FIGS. 10A to 10D, FIGS. 11A to 11D, or FIGS. 12A to 12D on one screen.

<Modification 5>
Further, for example, in the above-described embodiment, the centralized control device 10 presets the threshold value for the number of cycles (number of shots) for each maintenance work based on the user's numerical input via the input unit 150, but the present invention is limited to this. not. For example, the centralized control device 10 may calculate and set in advance a threshold for the number of cycles (number of shots) of maintenance work for each mold based on maintenance information for each mold.

Each function included in the centralized control device 10 according to one embodiment can be implemented by hardware, software, or a combination thereof. Here, "implemented by software" means implemented by a computer reading and executing a program.

Programs can be stored and supplied to computers using various types of non-transitory computer readable media. Non-transitory computer-readable media include various types of tangible storage media. Examples of non-transitory computer-readable media include magnetic recording media (e.g., flexible discs, magnetic tapes, hard disk drives), magneto-optical recording media (e.g., magneto-optical discs), CD-ROMs (Read Only Memory), CD- R, CD-R/W, semiconductor memory (eg, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash ROM, RAM). The program may also be supplied to the computer on various types of transitory computer readable medium. Examples of transitory computer-readable media include electrical signals, optical signals, and electromagnetic waves. Transitory computer-readable media can deliver the program to the computer via wired communication channels, such as wires and optical fibers, or wireless communication channels.

It should be noted that the steps of writing a program recorded on a recording medium include not only processes that are executed chronologically in order, but also processes that are executed in parallel or individually, even if they are not necessarily processed chronologically. is also included.

In other words, the centralized control device of the present disclosure can take various embodiments having the following configurations.

(1) The centralized control device 10 of the present disclosure is a centralized control device that collects operation information of at least one injection molding machine 20 and maintenance information of each of a plurality of molds in association with date and time. A display unit 170 is provided for displaying 20 operation information and maintenance information for each of a plurality of molds in the same area in association with date and time for each mold.
According to this centralized control device 10, the user can visually grasp the operation information about the injection molding machine and the maintenance information about the mold at the same time.

(2) In the centralized control device 10 described in (1), the operation information of the injection molding machine 20 equipped with any one of the plurality of molds is obtained by communicating with the injection molding machine 20. 20, the operation mode of the injection molding machine 20, the abnormality information of the injection molding machine 20, the cycle time of the injection molding machine 20, and the non-defective product information of the injection molding machine. may contain.
By doing so, the centralized control device 10 can accurately grasp the operating state of the injection molding machine 20 .

(3) In the centralized control device 10 described in (1) or (2), the maintenance information for each of the plurality of molds is stored in a barcode mounted on each mold via the barcode reader 30 or read/write device. One or more counters (not shown) count by adding the identifier for each mold obtained by reading the IC tag and the number of molding cycles by the injection molding machine 20 with the mold mounted. and the number of cycles.
By doing so, the centralized control device 10 can accurately grasp the maintenance status of each mold.

(4) The centralized control device 10 described in (3) may include a reset unit 113 that resets the number of cycles counted by a counter (not shown).
By doing so, the centralized control device 10 resets the number of cycles for each mold and/or for each maintenance work, so that the timing for the next maintenance work can be grasped.

(5) The centralized control device 10 described in any one of (1) to (4) may include an input unit 150 for inputting the number of cycles requiring maintenance for each of the plurality of molds.
By doing so, the centralized control device 10 can set the timing for performing maintenance work on each mold.

(6) In the centralized control device 10 described in any one of (1) to (5), the display unit 170 displays the injection molding machine 20 for a period designated by the user according to the display format and items designated by the user. The operation information and the maintenance information for each of the plurality of molds may be displayed in correspondence with the date and time.
By doing so, the user can more easily and visually grasp the operation information about the injection molding machine and the maintenance information about the mold at the same time.

1 centralized control system 10 centralized control device 110 control unit 111 operation information acquisition unit 112 mold identification information acquisition unit 113 reset unit 114 maintenance information generation unit 115 display control unit 116 instruction output unit 130 storage unit 131 operation information storage unit 132 maintenance information Storage unit 150 Input unit 170 Display unit 20(1) to 20(n) Injection molding machine 210 Control device

Claims

A centralized control device that collects operation information of at least one injection molding machine and maintenance information of each of a plurality of molds in association with date and time,
A centralized control device comprising: a display unit that displays operation information of the injection molding machine and maintenance information of each of the plurality of molds in the same area in association with the date and time for each mold.
The operation information of the injection molding machine equipped with any one of the plurality of molds includes an identifier indicating the injection molding machine, the operation mode of the injection molding machine, the injection 2. The centralized control device according to claim 1, comprising any one or more of abnormal information of the molding machine, cycle time of the injection molding machine, non-defective product information or defective product information of the injection molding machine.
The maintenance information for each of the plurality of molds includes an identifier for each mold obtained by reading a barcode or IC tag mounted on each mold via an external reading device, and an identifier for each mold. and the number of cycles counted by one or more counters that add and count the number of cycles of molding by the injection molding machine.
4. The centralized control device according to claim 3, comprising a reset unit that resets the number of cycles counted by the counter.
The centralized control device according to any one of claims 1 to 4, comprising an input unit for inputting the number of cycles requiring maintenance for each of the plurality of molds.
The display unit displays the operation information of the injection molding machine during the period specified by the user and the maintenance information of each of the plurality of molds in correspondence with the date and time according to the display format and items specified by the user. 6. The centralized control device according to any one of claims 1 to 5.